CN115778575A - Head positioning bracket - Google Patents

Abstract

The invention relates to the technical field of medical appliances, in particular to a head positioning bracket, which comprises a supporting plate, wherein a liftable supporting seat is arranged on the supporting plate, a mounting groove with an opening at the top is formed in the supporting seat, two movable frames are symmetrically arranged in the mounting groove along the width direction of a bed body, a plurality of supporting rollers for supporting the head of a patient are rotatably arranged on the movable frames and in the mounting groove between the two movable frames, the plurality of supporting rollers are distributed in an arc shape with the middle part recessed downwards, a driving roller driven to rotate by a regulating motor is rotatably arranged in the mounting groove below the plurality of supporting rollers, and the same supporting belt is sleeved on the plurality of supporting rollers and the outer side of the driving roller; the drive roller is driven to rotate by the adjusting motor, the drive roller drives the support belt to rotate, the head of the patient is driven to rotate around the neck by the support belt, and secondary fixing is not needed to be carried out on the head of the patient in the adjusting process, so that the angle of the head of the patient can be adjusted conveniently and quickly.

Description

A head positioning bracket

technical field

The invention relates to the technical field of medical appliances, in particular to a head positioning bracket.

Background technique

Neurosurgery often involves surgery on a patient's brain. During the operation, in order to avoid shaking of the patient's head and improve the success rate of the operation, medical staff often need to fix the patient's head.

The utility model patent with the application number CN202122455448.0 discloses a multifunctional neurosurgical head positioning support device, which includes a support and a clamping mechanism on the support. The clamping mechanism includes a two-way screw rod and two clamping blocks. One end of the two-way screw rod is connected to the knob, and the other end of the two-way screw rod runs through the two blocks and is connected to the inner wall of the support in rotation. The top end of the support has a A chute for the two clamping blocks to slide, and rubber blocks are fixed on the opposite side walls of the two supporting blocks. When the knob is turned, the knob drives the two-way screw rod to rotate, and the two-way screw rod drives the two blocks and the two rubber blocks to move toward each other, so that the two rubber blocks can be closely attached to the patient's head, which facilitates the fixation of the head.

However, the above-mentioned head positioning support device is inconvenient to adjust the angle of the patient's head after the patient's head is fixed. When the patient's head needs to be deflected during the operation, the angle of the head needs to be readjusted after the patient's head is removed. Perform secondary fixation again, the operation is loaded down with trivial details, prolonged operation time.

Contents of the invention

The technical problem to be solved by the present invention is to provide a head positioning bracket, which is convenient for adjusting the angle of the head, so as to solve the technical problem that the existing head positioning support device is cumbersome to adjust the angle of the patient's head.

In order to solve the above technical problems, the technical solution of the present invention is: a head positioning bracket, including a support plate, the support plate is movably connected to one end of the bed body along the length direction, and the support plate is provided with a liftable A support base, the support base is provided with a mounting groove with an opening at the top, and two movable frames are arranged symmetrically along the width direction of the bed body in the mounting groove, and the movable frames are rotatably installed in the mounting groove, The rotating axis of the movable frame extends along the length direction of the bed body, and an electric telescopic rod for pushing the movable frame to rotate is arranged in the installation groove; on the movable frame and between the two movable frames A plurality of support rollers for supporting the head of the patient are installed in the installation grooves between them. The support rollers extend along the length direction of the bed body, and the plurality of support rollers are in the shape of a downward depression in the middle. Arc-shaped distribution, the driving roller driven by the adjusting motor is installed in the installation groove located under the plurality of supporting rollers, the driving roller and the supporting roller extend in the same direction, and the plurality of supporting rollers and The outer side of the driving roller is provided with the same support belt; the support base is provided with a fixed belt mechanism; the support rollers are even in number, two adjacent support rollers form a group, and two adjacent groups of support rollers A lower pressure roller is arranged between the lower parts of the support rollers, and the lower pressure roller is rotatably installed in the installation groove or on the movable frame. The supporting belt passes through the bottom of the lower pressure roller, and a supporting belt tensioning mechanism is arranged in the installation groove.

As a preferred technical solution, the fixed belt mechanism includes a fixed belt, and a storage box is fixedly installed on one side of the support seat along the width direction of the bed body, and a storage box along the bed body is rotatably installed in the storage box. The first shaft extending in the length direction, the first shaft is coaxially fixed with the first winding roller, and one end of the fixing belt is wound on the first winding roller; There is an installation box driven by the adjustment mechanism to be raised or lowered. A second shaft extending in the same direction as the first shaft is installed in the installation box. The second shaft is coaxially fixed with a The second winding roller, the side of the support seat away from the storage box is rotatably installed with a support shaft extending along the length direction of the bed body, and the end of the fixing belt away from the first winding roller passes through the The upper part of the support base bypasses the support shaft and winds on the second winding roller; the first shaft rod is coaxially fixed with an interlocking gear, and the installation box is fixedly mounted with the Gear racks meshing with each other.

As a preferred technical solution, the adjustment mechanism includes a screw rod driven by a lifting motor, the screw rod extends vertically, and the installation box is provided with a through hole for the screw rod to pass through; the installation box A first mounting plate and a second mounting plate are slidably installed inside along the width direction of the bed body, and the first mounting plate and the second mounting plate are respectively located at the ends of the screw rod along the width direction of the bed body. On both sides, the side of the first mounting plate and the second mounting plate that are close to each other are fixedly installed with half nuts that match the screw rods, and the mounting box is provided with a drive for driving the two half nuts. The nut holds or loosens the linkage mechanism of the screw rod; a first tension spring is connected between the installation box and the top wall of the storage box, and a first tension spring is connected between the installation box and the bottom wall of the storage box. A second extension spring is connected.

As a further improvement, a large bevel gear is installed coaxially on the second shaft rod, a winding motor is installed in the installation box, and a large bevel gear is fixedly installed on the rotating shaft of the winding motor coaxially with the large bevel gear. A small bevel gear meshed with bevel gears; one end of the second shaft is coaxially fixed with a sun gear, and an auxiliary shaft coaxially arranged with the second shaft is rotatably installed in the installation box. A mounting frame is fixedly installed on the shaft, and a planetary gear meshing with the sun gear is mounted on the mounting frame, and a ring gear meshing with the planetary gear is fixedly mounted on one side of the large bevel gear; The sides of the first mounting plate and the second mounting plate that are close to each other are fixed with a friction body that matches the auxiliary shaft. When the two half nuts hold the screw rod tightly, the two half nuts The friction body clamps the auxiliary shaft and restricts the rotation of the auxiliary shaft.

As a preferred technical solution, the linkage mechanism includes a support plate located on the side of the second installation plate away from the first installation plate, and the first installation plate and the support plate are fixed by a connecting shaft connection, a return spring is connected between the side of the support plate away from the second installation plate and the inner wall of the installation box, and a spring for adjusting the second installation plate is connected between the support plate and the second installation plate. An electric push rod for determining the distance between a mounting plate and the second mounting plate.

As a preferred technical solution, the supporting plate is rotatably connected to one end of the bed body along the length direction through a hinge, the rotation axis of the supporting plate extends along the width direction of the bed body, and the bed body and the bed body A first hydraulic cylinder for adjusting the angle of the supporting plates is hinged between the supporting plates.

As a preferred technical solution, the bottom of the support base is fixedly equipped with a lifting plate located at the bottom of the support plate, and the support plate is provided with a through groove for the support base to pass through, and the support plate and the support plate A second hydraulic cylinder for adjusting the height of the support seat is installed between the lifting plates.

After adopting above-mentioned technical scheme, the beneficial effect of the present invention is:

According to the size of the patient's head, the application can drive the movable frame to rotate around the hinge axis through the expansion and contraction of the electric telescopic rod, so that the support belt located on the top of the second support roller can better fit the patient's head, and pass through the first Two support rollers provide better support for the patient's head and improve the stability of fixing the patient's head;

This application is convenient to drive the driving roller to rotate by adjusting the motor, the driving roller drives the support belt to rotate, and the support belt drives the patient's head to rotate around the neck. During the adjustment process, the patient's head does not need to be fixed twice, so that the adjustment is convenient and quick the angle of the patient's head;

In the present application, since the lower pressure roller is set between the bottoms of two adjacent sets of support rollers, the support belt can be closely attached to the tops of the two support rollers in the same group, so that the support belt at the top of the two support rollers remains Docile, so as to improve the comfort of the patient's head when resting on the support belt;

When the application adjusts the angle of the patient's head, the adjustment mechanism drives the installation box to rise or fall, and when the installation box moves up and down, it drives the fixing belt to rotate around the support shaft, so that the fixing belt follows the patient's head and deviates left and right. The efficiency of the patient's head angle adjustment is higher;

After the application is used, the two half nuts loosen the screw rod, the first tension spring and the second tension spring pull the installation box back to its original position, and at the same time the first installation plate and the second installation plate drive the two friction bodies to release the auxiliary shaft, so that the second shaft and the second winding roller can rotate freely, and the fixing belt loses the fixing effect on the patient's head, thereby quickly releasing the fixing on the patient's head, and the adjustment is more convenient;

In this application, the angle of inclination of the support plate can be adjusted through the expansion and contraction of the first hydraulic cylinder, and then the angle of pitch of the patient's head can be adjusted, and the height of the support base can be adjusted through the expansion and contraction of the second hydraulic cylinder, so as to match patients with different body shapes. Meet a variety of use needs.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is the structural representation of the embodiment of the present invention;

Fig. 2 is A-A sectional schematic diagram among Fig. 1;

Fig. 3 is a schematic cross-sectional view of Fig. 2;

Fig. 4 is a schematic structural view of a support roller according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of fixing the patient's head according to the embodiment of the present invention;

Fig. 6 is a schematic left view of the storage box shown in Fig. 5;

Fig. 7 is a B-B sectional schematic view of the middle storage box in Fig. 5;

Fig. 8 is a partially enlarged view of part I in Fig. 7;

Fig. 9 is a schematic diagram when two half nuts of the embodiment of the present invention loosen the screw mandrel;

FIG. 10 is a schematic side view of FIG. 1 .

In the figure: 1-pallet; 2-support seat; 3-installation groove; 4-movable frame; 5-side plate; 6-connecting plate; 7-hinge shaft; -First support roller; 11-Second support roller; 12-Adjustment motor; 13-Drive roller; 14-Support belt; 15-Squeeze roller; ; 19-U-shaped frame; 20-guide rod; 21-support block; 22-tension spring; A winding roller; 28-installation box; 29-slider; 30-linear bearing; 31-guide protrusion; 32-chute; 33-second shaft; 34-first auxiliary plate; Plate; 36-second winding roller; 37-connecting seat; 38-support shaft; 39-interlocking gear; 40-rack; 41-lifting motor; 42-screw; 43-first mounting plate; 44- The second mounting plate; 45-half nut; 46-the first extension spring; 47-the second extension spring; 48-big bevel gear; 49-winding motor; 50-small bevel gear; 51-sun gear; 52-auxiliary Shaft; 53-the third auxiliary plate; 54-mounting frame; 55-planetary gear; 56-ring gear; 57-friction body; 58-support plate; 59-connecting shaft; 62-first hydraulic cylinder; 63-bed frame; 64-ear plate; 65-lifting plate; 66-through slot; 67-second hydraulic cylinder; 68-polished rod; 69-bed body; head.

Detailed ways

As shown in Figures 1 to 10, a head positioning bracket includes a supporting plate 1, the supporting plate 1 is movably connected to one end of the bed body 69 along the length direction, and the supporting plate 1 is specifically connected to the front end of the bed body 69. Board 1 is provided with liftable support seat 2, and support seat 2 is provided with the installation groove 3 of top opening, and in installation groove 3 along the width direction of bed body 69, two movable frames 4 are arranged symmetrically left and right, and movable frame 4 includes The two side plates 5 oppositely arranged front and back and the connecting plate 6 welded between the two side plates 5, the movable frame 4 is rotatably installed in the installation groove 3, and the sides of the two side plates 5 away from each other pass through the hinge shaft 7 respectively. Rotation is connected on the inwall of mounting groove 3, and the axis that movable frame 4 rotates extends back and forth along the length direction of bed body 69, and the electric telescopic rod 8 that is used to promote movable frame 4 to rotate is provided with in the mounting groove 3, and one end of electric telescopic rod 8 It is hinged on the inner wall of the mounting groove 3, and the other end is hinged on the inner side of the side plate 5. The electric telescopic rod 8 can drive the movable frame 4 to rotate around the hinge shaft 7 when it is telescopic.

As shown in Fig. 3 and Fig. 4, a plurality of supporting rollers 9 for supporting the head 71 of the patient are mounted on the movable frame 4 and in the installation groove 3 between the two movable frames 4, and the supporting rollers 9 are arranged along the The length direction of the bed body 69 extends forward and backward. In order to improve the fit between the support rollers 9 and the patient's head 71 , a plurality of support rollers 9 are distributed in an arc shape with a downward depression in the middle. The supporting roller 9 includes a first supporting roller 10 positioned between the two movable frames 4 and a second supporting roller 11 positioned on the movable frame 4, and the two ends of the first supporting roller 10 are respectively rotatably mounted on opposite sides of the mounting groove 3 On the wall, the two ends of the second support roller 11 are respectively rotatably mounted on the two side plates 5, and the axis of rotation of the movable frame 4 coincides with the axis of the innermost second support roller 11, so that the first support roller can be raised. 10 and the continuity between the second support roller 11, the top of the support seat 2 and the top of the side plate 5 are arc-shaped, the top of the first support roller 9 is exposed above the installation groove 3, and the top of the second support roller 11 The top exposes the top of the side plate 5 .

The drive roller 13 driven by the adjustment motor 12 is installed in the installation groove 3 below the plurality of support rollers 9. The drive roller 13 extends in the same direction as the support roller 9. The adjustment motor 12 is installed on the outside of the support base 2 through bolts. One end of the drive roller 13 is rotatably connected to the inner wall of the installation groove 3, and the other end is fixedly connected to the rotating shaft of the adjusting motor 12. The outer sides of the plurality of support rollers 9 and the drive roller 13 are provided with the same annular support belt 14. The support seat 2 is provided with a fixing belt mechanism.

During the operation, the patient lies on the bed body 69, and the head 71 rests on the support belt 14 at the top of a plurality of support rollers 9, and the patient's head 71 is fixed by the fixing belt mechanism so that the patient's head 71 cannot be detached. Support seat 2.

When used for different patients, according to the size of the patient's head 71, the movable frame 4 can be driven to rotate around the hinge shaft 7 through the expansion and contraction of the electric telescopic rod 8, as shown in Figure 5, so as to make it easy to make the second support roller 11 top The support belt 14 can better fit the patient's head 71, and provide better support for the patient's head 71 through the second support roller 11, improving the stability of fixing the patient's head 71.

When the angle of the patient's head 71 needs to be adjusted during the operation, the motor 12 can be used to drive the drive roller 13 to rotate, the drive roller 13 drives the support belt 14 to rotate, and the support belt 14 drives the patient's head 71 to rotate around the neck , during the adjustment process, there is no need to fix the patient's head 71 twice, which is more convenient to use. In addition, in order to improve the efficiency that the drive roller 13 drives the support belt 14 to rotate, a squeeze roller 15 that presses the support belt 14 to the bottom of the drive roller 13 is also rotatably installed in the installation groove 3 .

There are even numbers of support rollers 9, the first support rollers 10 and the second support rollers 11 are even numbers, two adjacent support rollers 9 form a group, and the bottom of the two adjacent groups of support rollers 9 is provided with a lower roller. Pressure roller 16, the lower pressure roller 16 is installed in the installation groove 3 or rotated on the movable frame 4, specifically, the lower pressure roller 16 between the bottom of two adjacent first support rollers 10 and the adjacent The lower pressure roller 16 between the first support roller 10 and the bottom of the second support roller 11 is rotatably installed in the installation groove 3, and the lower pressure roller 16 between the bottoms of two adjacent second support rollers 11 is rotatably installed. On the movable frame 4, the support belt 14 between adjacent two groups of support rollers 9 passes around through the bottom of the lower pressure roller 16, and the support belt 14 at the top of a plurality of support rollers 9 forms a support belt 14 for supporting the patient's head 71. supporting surface. The installation groove 3 is provided with a support belt tensioning mechanism, specifically, the support belt tensioning mechanism includes two guide rollers 17 arranged opposite to each other along the width direction of the bed body 69, the guide rollers 17 extend in the same direction as the support roller 9, and drive Roller 13 is positioned between two guide rollers 17, and the two ends of guide roller 17 are respectively rotated and installed on the opposite side walls of mounting groove 3, and guide roller 17 is supported on the inner side of support belt 14, and two guide rollers 17 will support belt 14 struts to the left and right sides respectively, can prevent that support band 14 and movable frame 4 and electric telescopic link 8 produce friction between; The support rollers 9 extend in the same direction, and the tension roller 18 is supported on the outside of the support belt 14 between the guide roller 17 and the drive roller 13. The tension roller 18 is rotatably mounted on the U-shaped frame 19, and the bottom of the U-shaped frame 19 passes through Bolts are installed with a vertically extending guide rod 20, and a support block 21 is installed between the front and rear side walls of the installation groove 3 by bolts. The support block 21 is provided with a guide hole matched with the guide rod 20, and the guide rod 20 slides Installed in the guide hole, the guide rod 20 between the U-shaped frame 19 and the support block 21 is sleeved with a tension spring 22 , and the lower end of the guide rod 20 is also welded with an anti-off block 23 . The tension spring 22 acts on the U-shaped frame 19, and the U-shaped frame 19 drives the tension roller 18 to be supported on the bottom of the support belt 14, and when the angle of the movable frame 4 changes, it floats up and down with the support belt 14, so that the support belt 14 remains tense state. Since the lower pressure roller 16 is set between the bottoms of the adjacent two groups of support rollers 9, the support belt 14 can be closely attached to the tops of the two support rollers 9 of the same group, so that the two support rollers 9 tops that are positioned at The support strap 14 remains snug, thereby improving the comfort of the patient's head 71 resting on the support strap 14 . In addition, the comfort of the patient can be further improved by covering the outer side of the support roller 9 with a flexible layer.

As shown in Figures 5 to 7, the fixed belt mechanism includes a fixed belt 24, and the right side of the support seat 2 is fixed with a storage box 25 by bolts, and a bed body 69 is installed between the front and rear side walls of the storage box 25 through bearing rotation. The first shaft 26 extending forward and backward in the length direction of the first shaft 26 is coaxially fixed with a first take-up roller 27 , and one end of the fixed belt 24 is wound on the first take-up roller 27 . The storage box 25 on the right side of the first winding roller 27 is also provided with an installation box 28 driven by an adjustment mechanism to raise or lower, and a vertically extending slide bar 29 is fixedly installed between the upper and lower side walls of the storage box 25, The linear bearing 30 matched with the slide bar 29 is fixedly installed in the installation box 28 by bolts. The installation box 28 is provided with a reserved hole for the slide bar 29 to pass through. In order to further improve the stability of the installation box 28 moving up and down, the storage The inner sides of the front and rear side walls of the box 25 are respectively integrally formed with vertically extending guide protrusions 31 , and the installation box 28 is provided with a slide groove 32 matching the guide protrusions 31 . In the installation box 28, the second shaft rod 33 extending in the same direction as the first shaft rod 26 is installed to be rotated. The two ends are respectively mounted on the first auxiliary plate 34 and the second auxiliary plate 35 through bearings, and the second shaft rod 33 between the first auxiliary plate 34 and the second auxiliary plate 35 is coaxially fixed with a second receiving plate. Roller 36, the left side top of support seat 2 is fixedly installed with connecting seat 37 by bolt, and the supporting shaft 38 that extends forward and backward along the longitudinal direction of bed body 69 is installed on the connecting seat 37, and fixed belt 24 is away from the first winding roller One end of 27 goes around the bottom of the support shaft 38 through the top of the support seat 2 and is wound on the second winding roller 36. The top of the storage box 25 and the top of the installation box 28 are all provided with passages for the fixing belt 24 to pass through. , when the patient's head 71 rests on the support belt 14 , the patient's head 71 is pressed down by the fixing belt 24 so that the patient's head 71 cannot be separated from the support seat 2 .

The front and rear ends of the first shaft 26 are respectively coaxially fixed with interlocking gears 39 , and the mounting box 28 is fixed with a rack 40 meshing with the interlocking gears 39 via bolts. When the installation box 28 moves up, the rack 40 drives the interlocking gear 39 and the first shaft 26 to rotate counterclockwise, and the first shaft 26 drives the first winding roller 27 to rotate the winding fixed belt 24 counterclockwise, or the installation box 28 When moving down, the rack 40 drives the interlocking gear 39 and the first shaft 26 to rotate clockwise, and the first shaft 26 drives the first winding roller 27 to rotate clockwise to release the fixed belt 24, so that when the second winding roller 36 When in a static state, the fixing belt 24 can be driven to rotate around the support shaft 38 by moving the installation box 28 up and down. Specifically, when the driving roller 13 drives the support belt 14 to rotate to adjust the angle of the patient's head 71, the adjustment mechanism drives the installation box 28 to rise or fall, and when the installation box 28 moves up and down, it drives the fixed belt 24 to rotate around the support shaft 38 , so that the fixing belt 24 at the bottom that is in contact with the patient's head 71 deviates left and right following the patient's head 71, thereby further improving the efficiency of adjusting the angle of the patient's head 71. In addition, in order to keep the fixed belt 24 in a tensioned state when the installation box 28 is raised or lowered, the diameter of the interlocking gear 39 is consistent with the diameter of the first winding roller 27, and the fixed belt 24 has a certain degree of elasticity, so as to avoid the tension of the fixed belt. 24 Excessive relaxation.

The adjustment mechanism includes a screw mandrel 42 driven by a lifting motor 41. The lifting motor 41 is installed on the inside of the top wall of the storage box 25 by bolts. The screw mandrel 42 extends vertically. The rotating shaft is fixedly connected, and the lower end of the screw mandrel 42 is installed on the bottom wall of the storage box 25 by bearing rotation, and the installation box 28 is provided with a through hole for the screw mandrel 42 to pass through; The first mounting plate 43 and the second mounting plate 44 are slidably installed on the left and right sides, and the polished rod 68 extending left and right along the width direction of the bed body 69 is fixedly installed in the mounting box 28. There are two polished rods 68, which are respectively located on the wire On the front and rear sides of the rod 42, the first mounting plate 43 and the second mounting plate 44 are provided with sliding holes matched with the polished rod 68, and the first mounting plate 43 and the second mounting plate 44 are respectively located at the left and right sides of the screw mandrel 42. On the side, the side where the first mounting plate 43 and the second mounting plate 44 are close to each other is welded with a half nut 45 that matches the screw mandrel 42, and the mounting box 28 is provided with a nut for driving the two half nuts 45 to hold tight or loosen. The linkage mechanism of the screw rod 42; the first extension spring 46 is connected between the installation box 28 and the top wall of the storage box 25, and the second extension spring 47 is connected between the installation box 28 and the bottom wall of the storage box 25.

Specifically, when adjusting the angle of the patient's head 71, the screw rod 42 is held tightly by the two half nuts 45, and the screw rod 42 is driven to rotate by the lifting motor 41, and the screw rod 42 acts on the two half nuts 45 to drive the installation. The box 28 is raised or lowered to make the fixing belt 24 follow the patient's head 71 to deviate left and right; The tension of the second extension spring 47 to the installation box 28 and the gravity of the installation box 28 itself drive the installation box 28 to move to a balanced state, so that the installation box 28 remains in the position in the middle of the storage box 25 along the vertical direction, and the installation box 28 Drive the rack 40 to move relative to the interlocking gear 39, so that the interlocking gear 39 remains in the middle of the rack 40, so as to ensure that the installation box 28 has enough space to move up and down and the rack 40 can move up and down within a certain range when it is used next time Can not break away from interlocking gear 39 when moving.

As shown in Figures 7 and 8, a large bevel gear 48 is mounted on the rear end of the second shaft 33 through bearings to rotate coaxially, and a winding motor 49 is installed in the installation box 28 through bolts, and the winding motor 49 is a brake motor The small bevel gear 50 meshing with the large bevel gear 48 is coaxially fixedly installed on the rotating shaft of the winding motor 49; Between the sun gear 51 and the second winding roller 36, an auxiliary shaft 52 coaxially arranged with the second shaft rod 33 is rotatably installed in the installation box 28, and a third auxiliary plate 53 is integrally formed on the inner wall of the installation box 28. The auxiliary shaft 52 is rotatably mounted on the third auxiliary plate 53 through bearings, and the front end of the auxiliary shaft 52 is fixed with a mounting frame 54 by bolts, and the front side of the mounting frame 54 is rotatably mounted with a planetary gear 55 meshing with the sun gear 51. The rear side of the bevel gear 48 is integrally formed with a ring gear 56 that meshes with the planetary gear 55; the sides of the first mounting plate 43 and the second mounting plate 44 that are close to each other are fixed with friction gears that match the auxiliary shaft 52 through bolts. Body 57, the side of the two friction bodies 57 close to each other is in an arc that matches the end of the auxiliary shaft 52, when the two half nuts 45 hold the screw rod 42 tightly, the two friction bodies 57 clamp the auxiliary shaft 52 and limits the rotation of the auxiliary shaft 52 through friction.

During specific use, when the patient's head 71 is fixed, the screw rod 42 is held tightly by two half nuts 45, as shown in Figure 8, and the first mounting plate 43 and the second mounting plate 44 drive two friction bodies at the same time 57 close to each other and hold the auxiliary shaft 52 tightly to limit the rotation of the auxiliary shaft 52; then the winding motor 49 drives the small bevel gear 50 to rotate, the small bevel gear 50 drives the large bevel gear 48 and the ring gear 56 to rotate, and the ring gear 56 drives the planetary gear 55 rotation, the planetary gear 55 drives the sun gear 51 to rotate, the sun gear 51 drives the second shaft 33 to rotate, the second shaft 33 drives the second winding roller 36 to wind up or release the fixed belt 24, thereby adjusting the The length of the fixing belt 24 between the roller 27 and the second winding roller 36 is used to adjust the tightness of the fixing belt 24 to the patient's head 71 .

Conversely, when the two half nuts 45 loosen the screw mandrel 42, the first extension spring 46 and the second extension spring 47 pull the mounting box 28 back to its original position, and the first mounting plate 43 and the second mounting plate 44 drive two friction The bodies 57 move away from each other and loosen the auxiliary shaft 52, thereby releasing the restriction on the rotation of the auxiliary shaft 52, so that the winding motor 49 cannot interfere with the rotation of the second shaft rod 33, and the second shaft rod 33 and the second winding roller 36 can rotate freely, and the fixing belt 24 loses the fixing effect on the patient's head 71, thereby releasing the fixation to the patient's head 71 quickly.

The linkage mechanism includes a support plate 58 positioned on the right side of the second mounting plate 44. The first mounting plate 43 and the support plate 58 are fixedly connected by two connecting shafts 59 extending left and right. The second mounting plate 44 is provided with a The avoidance hole that connecting shaft 59 passes, the support plate 58 is also provided with the sliding hole that matches with polished rod 68, and the back-moving spring 60 is connected between the right side of support plate 58 and the inwall of installation box 28, support plate 58 and the first The electric push rod 61 that is used to adjust the distance between the first mounting plate 43 and the second mounting plate 44 is connected between the two mounting plates 44, and the main body of the electric pushing rod 61 is installed on the right side of the support plate 58 by bolts. The telescopic rod of the push rod 61 passes through the support plate 58 to the left and is fixedly installed on the second mounting plate 44 by bolts.

Specifically, when the electric push rod 61 stretches, the second mounting plate 44 is first pushed to slide to the left along the polished rod 68 and close to the screw rod 42. 61 continues to stretch so as to drive the support plate 58 to slide rightward along the polished rod 68 and compress the return spring 60. At the same time, the support plate 58 drives the first mounting plate 43 to slide rightward along the polished rod 68 through the connecting shaft 59, and the first mounting plate 43 drives the The half-nut 45 is close to the screw rod 42, so that the two half-nuts 45 hold the screw rod 42 tightly, and at the same time, the first mounting plate 43 and the second mounting plate 44 drive two friction bodies 57 to hold the auxiliary shaft 52 tightly, as shown in Figure 8 shown.

Conversely, when the electric push rod 61 shrinks, at first the return spring 60 stretches and promotes the support plate 58 to slide leftward along the polished rod 68, and the support plate 58 drives the first mounting plate 43 to slide leftward along the polished rod 68 through the connecting shaft 59, and the first mounting plate 43 Drive the half nut 45 on it to separate from the screw mandrel 42. The left end of the polished rod 68 is provided with a step surface for supporting the first mounting plate 43. The push rod 61 continues to shrink to drive the second mounting plate 44 to slide rightward along the polished rod 68, and the second mounting plate 44 drives the half nut 45 on it to separate from the screw rod 42, so that the two half nuts 45 loosen the screw rod 42, At the same time, the first mounting plate 43 and the second mounting plate 44 drive the two friction bodies 57 to loosen the auxiliary shaft 52 , as shown in FIG. 9 .

As shown in Figures 1 and 10, the supporting board 1 is connected to the front end of the bed body 69 by hinge rotation, the axis of rotation of the supporting board 1 extends left and right along the width direction of the bed body 69, and the bed body 69 and the supporting board 1 are hinged. The first hydraulic cylinder 62 that is used to adjust the angle of supporting plate 1 is arranged, and the first hydraulic cylinder 62 is provided with two oppositely along the width direction of bed body 69 left and right, and the bottom of bed body 69 is fixedly installed with bedstead 63, and the bottom of supporting plate 1 Two ear plates 64 are fixedly installed on the bottom along the width direction of the bed body 69. One end of the first hydraulic cylinder 62 is hinged on the bed frame 63, and the other end is hinged on the ear plate 64 on the corresponding side. The expansion and contraction of the cylinder 62 can adjust the inclination angle of the support plate 1 , and then adjust the pitch angle of the patient's head 71 .

As shown in Figure 2, the bottom of the support base 2 is fixed with a lifting plate 65 located at the bottom of the pallet 1 by bolts, and the pallet 1 is provided with a through groove for the support base 2, the adjustment motor 12 and the storage box 25 to pass through. 66, a second hydraulic cylinder 67 for adjusting the height of the support seat 2 is installed between the supporting plate 1 and the lifting plate 65, and two second hydraulic cylinders 67 are arranged opposite to each other along the width direction of the bed body 69. The second hydraulic cylinder The cylinder body of 67 is fixedly installed on the lifting plate 65 by bolts, and the piston rod of the second hydraulic cylinder 67 passes upwards through the lifting plate 65 and is fixed on the bottom of the supporting plate 1 by bolts, and can be adjusted by the expansion and contraction of the second hydraulic cylinder 67 The height of the support base 2 is suitable for use by patients with different body types. In addition, in order to improve the comfort of the patient, a support pad 70 for supporting the patient's neck is also fixedly installed on the top of the support plate 1 on the side of the support base 2 close to the bed body 69 .

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The utility model provides a head positioning bracket, includes the layer board, layer board swing joint is at the bed body along length direction's one end, its characterized in that: the bed body is characterized in that a lifting supporting seat is arranged on the supporting plate, an installation groove with an opening at the top is formed in the supporting seat, two movable frames are symmetrically arranged in the installation groove along the width direction of the bed body, the movable frames are rotatably installed in the installation groove, the rotating axis of each movable frame extends along the length direction of the bed body, and an electric telescopic rod for pushing the movable frames to rotate is arranged in the installation groove; the bed body is characterized in that a plurality of supporting rollers for supporting the head of a patient are rotatably mounted in the mounting grooves on the movable frames and between the two movable frames, the supporting rollers extend along the length direction of the bed body and are distributed in an arc shape with the middle recessed downwards, a plurality of driving rollers driven to rotate by an adjusting motor are mounted in the mounting grooves below the supporting rollers in a rotating mode, the driving rollers extend in the same direction as the supporting rollers, and the supporting rollers and the outer side of the driving rollers are sleeved with the same supporting belt; a fixing belt mechanism is arranged on the supporting seat;

the supporting rollers are even in number, two adjacent supporting rollers are a group, two adjacent supporting rollers are arranged between the lower portions of the supporting rollers, the lower pressing rollers are rotatably installed in the installation grooves or rotatably installed on the movable frame, the supporting belts between the two adjacent supporting rollers are located and are wound around the bottom of the lower pressing rollers, and supporting belt tensioning mechanisms are arranged in the installation grooves.

2. A head positioning bracket as set forth in claim 1, wherein: the fixing belt mechanism comprises a fixing belt, a containing box is fixedly installed on one side of the supporting seat along the width direction of the bed body, a first shaft lever extending along the length direction of the bed body is rotatably installed in the containing box, a first winding roller is coaxially and fixedly installed on the first shaft lever, and one end of the fixing belt is wound on the first winding roller; a mounting box driven to rise or fall by an adjusting mechanism is further arranged in the containing box, a second shaft rod extending in the same direction as the first shaft rod is rotatably mounted in the mounting box, a second winding roller is coaxially and fixedly mounted on the second shaft rod, a supporting shaft extending in the length direction of the bed body is rotatably mounted on one side, away from the containing box, of the supporting seat, and one end, away from the first winding roller, of the fixing belt bypasses the supporting shaft through the upper portion of the supporting seat and is wound on the second winding roller; the first shaft lever is coaxially and fixedly provided with a linkage gear, and the mounting box is fixedly provided with a rack meshed with the linkage gear.

3. A head positioning bracket as set forth in claim 2, wherein: the adjusting mechanism comprises a screw rod driven by a lifting motor to rotate, the screw rod extends vertically, and a through hole for the screw rod to pass through is formed in the mounting box; a first mounting plate and a second mounting plate are slidably mounted in the mounting box along the width direction of the bed body, the first mounting plate and the second mounting plate are respectively positioned on two sides of the screw rod along the width direction of the bed body, half nuts matched with the screw rod are fixedly mounted on the sides, close to each other, of the first mounting plate and the second mounting plate, and a linkage mechanism for driving the two half nuts to clasp or loosen the screw rod is arranged in the mounting box; the mounting box with be connected with first extension spring between the roof of containing box, the mounting box with be connected with the second extension spring between the diapire of containing box.

4. A head positioning bracket as set forth in claim 3, wherein: a large bevel gear is coaxially and rotatably arranged on the second shaft lever, a winding motor is arranged in the mounting box, and a small bevel gear meshed with the large bevel gear is coaxially and fixedly arranged on a rotating shaft of the winding motor; a sun gear is coaxially and fixedly installed at one end of the second shaft rod, an auxiliary shaft which is coaxial with the second shaft rod is rotatably installed in the installation box, an installation frame is fixedly installed on the auxiliary shaft, a planetary gear which is meshed with the sun gear is rotatably installed on the installation frame, and a gear ring which is meshed with the planetary gear is fixedly installed on one side of the large bevel gear; the first mounting plate and one side that the second mounting plate is close to each other all fixed mounting have with the friction body that the auxiliary shaft matches, when two the half-nut is held tightly the lead screw, two the friction body presss from both sides tightly the auxiliary shaft and restriction the auxiliary shaft rotates.

5. A head positioning bracket as set forth in claim 3, wherein: the linkage mechanism comprises a supporting plate located on one side, away from the second mounting plate, of the first mounting plate, the first mounting plate is fixedly connected with the supporting plate through a connecting shaft, the supporting plate is away from one side, away from the second mounting plate, of the second mounting plate, a reset spring is connected between the inner walls of the mounting boxes, and an electric push rod used for adjusting the distance between the first mounting plate and the second mounting plate is connected between the supporting plate and the second mounting plate.

6. A head positioning bracket as set forth in claim 1, wherein: the bed body is connected through the hinge rotation the bed body is along length direction's one end, layer board pivoted axis is followed the width direction of the bed body extends, the bed body with it has the first pneumatic cylinder that is used for adjusting to articulate between the layer board the angle of layer board.

7. A head positioning bracket as set forth in claim 1, wherein: the bottom fixed mounting of supporting seat has and is located the lifter plate of the bottom of layer board, be equipped with the confession on the layer board the logical groove that the supporting seat passed, the layer board with install between the lifter plate and be used for adjusting the second pneumatic cylinder of the height of supporting seat.

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