CN111658033B - Special meniscus retractor for knee arthroscope - Google Patents

Abstract

The present application provides a meniscus retractor for knee arthroscopy, comprising: a first catcher, a second catcher assembly, a support plate, a sliding plate, a locking device, an ankle fixation sleeve, a telescopic mechanism and an elastic band, the second catcher The catcher assembly includes a second catcher and a number of angle positioning support rods pivotally connected to the second catcher, the second catcher and each angle positioning support rod are each provided with an insertion hole; one end of the support plate is pivotally connected to the second catcher. On a coupler, the plug-in plate pivotally connected to the other end of the support plate is connected with the corresponding socket so that the support plate is inclined at different angles; the sliding plate is laterally arranged on the support plate; the locking device is used to connect the sliding plate to the support plate The plates are connected together; the ankle fixing sleeve is rotatably arranged on the sliding plate; the telescopic mechanism is connected between the ankle fixing sleeve and the sliding plate; the elastic band is connected to both ends of the ankle fixing sleeve. The present application enables reliable eversion of the meniscus with the leg extended or with the knee flexed.

Description

A kind of meniscus retractor for knee arthroscopy

technical field

The invention relates to a medical auxiliary device, in particular to a special meniscus retractor for knee arthroscopy.

Background technique

The meniscus is located on the medial and lateral articular surfaces of the tibial plateau, and is prone to damage and tear during strenuous physical labor or sports. These tears may even be caused without obvious trauma. Meniscus injury is a common clinical disease in orthopaedics. It is usually treated by arthroscopic joint repair, angioplasty or resection. The key to the operation is to fully expose the meniscus. Initially, in clinical practice, two assistants applied force in opposite directions on the thigh and calf respectively. This method not only wastes manpower, but also occupies the operator's operating space and affects the operator's work efficiency.

Chinese patent CN201710280849.2 discloses a medial meniscus exposed body surface auxiliary retractor. One end of the fixed shaft is connected with a connecting rod a and a connecting rod b, and the other end of the fixed shaft is fixed at the center of the stress plate of the shaft. A stress pad is connected to one side, and two fasteners are arranged on the fixed shaft. The bolts are connected with the fixing rod a and the fixing rod b. The inner wall of the fastener is provided with an internal thread, and one end of the fastener close to the connecting rod is provided with a fixed stopper. The fixed stopper and the fastener are integral structures. The ends of the fixing rod b are respectively connected and fixed with the fixing belt a and the fixing belt b. The fixing belt a and the fixing belt b are provided with adhesive strips. The joint space fully exposes the medial meniscus, which is convenient to operate, reduces labor costs, and improves surgical efficiency. Since the legs cannot be fixed when using this application, it may move during the operation, and both the thigh and calf are fixed, so the external Flip effect is not good.

Chinese patent CN201821770368.6 A special meniscus retractor for knee arthroscopy, including an adapter, a connecting rod is fixed on the adapter, a telescopic rod is fixed at one end of the connecting rod, a first sleeve is fixed on the top of the telescopic rod, and a first sleeve is fixed on the top of the telescopic rod. A sleeve is threadedly connected with a first screw, one end of the first screw is connected with a stress pad through a hinge seat, the other end is fixed with a first handle, the other end of the connecting rod is slidably connected with an extension rod, and the connecting rod is provided with an extension rod and an extension rod. The locking bolt corresponding to the rod, the inner side of the extension rod is fixed with a card seat, the end of the extension rod is fixed with a second sleeve, the second sleeve is threadedly connected with a second screw, and one end of the second screw is fixed with a second handle The other end is fixed with a fixed pulley, the fixed pulley is provided with a traction rope, one end of the traction rope is fixed with a leg traction belt, and the other end of the traction rope is fixed with a counterweight. The utility model saves manpower and effectively improves the work efficiency of the operator. Since the eversion force required by each person is different, the counterweight in this application cannot be used universally, and with this application, the patient's legs cannot be bent when they are bent. Use this application for retraction.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a special meniscus retractor for knee arthroscopy, which solves the problem of poor valgus effect of the knee joint when the leg is straightened or bent.

In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:

A special meniscus retractor for knee arthroscopy, comprising:

the first adapter;

A second catcher assembly, the second catcher assembly includes a second catcher and a number of angular positioning support rods that are coaxially pivoted on the second catcher, the second catcher and each angle positioning support rod Each support rod is provided with a socket;

A support plate, one end of the support plate is pivotally connected to the first adapter, and the plug-in plate pivotally connected to the other end of the support plate is connected with the corresponding socket so that the support plate is inclined at different angles ;

a sliding plate laterally arranged on the support plate;

a locking device for fixing the sliding plate and the supporting plate together;

Rotating the ankle fixing sleeve arranged on the sliding plate;

a telescopic mechanism connected between the ankle fixing sleeve and the sliding plate;

An elastic band, the elastic band is connected to both ends of the ankle fixing sleeve.

Further, a plurality of arc-shaped inner sleeves with different diameters are also included, and multiple pieces of arc-shaped inner sleeves can be stacked and placed in the ankle fixing sleeve in sequence according to the diameter of the fixed ankle.

Further, the outer arc surface of the arc-shaped inner bushing is provided with a plurality of snap protrusions, and the snap-in protrusions are located on the inner wall of the ankle fixing sleeve or on the inner arc of the adjacent arc-shaped inner bushing. The card slot on the surface is fitted and connected.

Further, each end surface of the ankle fixing sleeve is provided with an arc-shaped strip, and the arc-shaped strip is slidably connected to the corresponding arc-shaped groove on the sliding plate.

Further, the telescopic mechanism is a turnbuckle bolt.

Further, the plug board is always in a vertical state.

Further, the bottom of the insertion hole on the angle positioning support rod is provided with a through bottom hole, the insertion shaft on the end of the plug board passes through the through bottom hole, and at the same time, the insertion shaft passes through the hole. The elastic ring is clamped in the annular groove of the insertion shaft through the elastic ring sleeved on the angle positioning support rod.

Further, the locking device includes a double-headed cam, a pair of lock pins and a tension spring connected between the pair of lock pins, the double-headed cam is pivotally connected in the sink groove of the sliding plate through a torsion spring, a The pair of lock pins are respectively slidably arranged in the corresponding side walls of the sink groove, the double-headed cam is located between the pair of lock pins, the driving rod of the lock pin is pressed against the double-headed cam, and the double-headed cam is located between the pair of lock pins. When the head cam is in a free state, it pushes a pair of locking pins to lock and connect with the locking grooves on the support plate.

As can be seen from the above technical solutions, the present invention has the following beneficial effects:

Since the present application adopts the fixation of the ankle, the rotation of the ankle is driven to achieve the effect of the appearance of the knee, and the ankle cannot be moved at will after the fixation is completed, so it can ensure that the position of the knee and the valgus amplitude remain unchanged, and the operation process is stable;

Because the ankle fixation sleeve can be rotated at any angle under the action of the telescopic mechanism, it can be adjusted according to the needs of the operation, and the leg will not be sprained due to insufficient driving force that cannot be turned in place or that the driving force is too large;

Since the support plate of the present application can be inclined at various angles, it is convenient to use when the knee is bent, and the operation is convenient.

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying 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 It is an embodiment of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to the provided drawings without creative work.

FIG. 1 is a front view of the present invention.

Figure 2 is a side view of the present invention.

FIG. 3 is a schematic structural diagram of the locking device of the present invention.

Description of reference numerals: first clutch 1, supporting plate 2, inserting plate 21, inserting shaft 22, guide groove 23, sliding plate 3, arc-shaped groove 31, sinking groove 32, locking device 4, double-headed cam 41, lock Pin 42, driving rod 421, tension spring 43, ankle fixing sleeve 5, arc strip 51, extension arm 52, arc inner bushing 6, elastic band 7, turnbuckle bolt 8, second catcher 9, socket 91, Angle positioning support rod 10 , through bottom hole 101 , elastic ring 102 .

Detailed ways

The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

The present application will be further described below with reference to FIGS. 1 to 3. As shown in FIGS. 1 and 2, a special meniscus retractor for knee arthroscopy includes: a first adapter 1, a second adapter assembly, and a support plate 2. The sliding plate 3, the locking device 4, the ankle fixing sleeve 5, the telescopic mechanism and the elastic band 7, the first adapter 1 is n-shaped, the first adapter 1 is slidably arranged on the slideway of the operating bed, and is threadedly connected to the The bolts on the first adaptor 1 fix the first adaptor 1 and the slideway by squeezing the slideway; the second adaptor assembly includes a second adaptor 9 and is coaxially pivoted on the first adaptor. There are several angle positioning support rods 10 on the two sockets 9, the second socket 9 is n-shaped, and an insertion hole 91 is respectively provided on the second socket 9 and each angle positioning support rod 10; One end of the support plate 2 is pivotally connected to the first adapter 1, and the plug-in plate 21 pivotally connected to the other end of the support plate 2 is connected with the corresponding socket 91 so that the support plate 2 is inclined differently. angle, and the inserting plate 21 is always in a vertical state; the sliding plate 3 is slidably arranged on the guide groove 23 of the supporting plate 2; the locking device 4 is used to connect the sliding plate 3 to the The support plates 2 are fixedly connected together; the ankle fixing sleeve 5 is rotatably arranged on the sliding plate 3 ; the telescopic mechanism is connected between the extension arm 52 of the ankle fixing sleeve 5 and the sliding plate 3 ; The elastic band 7 is connected to both ends of the ankle fixing sleeve 5, and the working length of the elastic band 7 can be adjusted according to different patients.

Preferably, the number of the angle positioning support rods 10 is two, so the inclination angles that the support plate 2 can use are 0°, 20°, and 45°.

As shown in FIG. 1 , the present application also includes several arc-shaped inner bushings 6 with different diameters, and multiple pieces of arc-shaped inner bushings 6 can be stacked and placed in the ankle fixing sleeve 5 in turn according to the diameter of the fixed ankle, wherein, The outer arc surface of the arc-shaped inner bushing 6 is provided with a number of snap protrusions, and the snap-in protrusions are located on the inner wall of the ankle fixing sleeve 5 or on the inner arc surface of the adjacent arc-shaped inner bushing 6 . The card grooves on the upper part are fitted and connected to facilitate the adjustment of the number of the arc-shaped inner bushings 6 .

An arc-shaped strip 51 is provided on each end surface of the ankle fixing sleeve 5 , and the arc-shaped strip 51 is slidably connected to the corresponding arc-shaped groove 31 on the sliding plate 3 , wherein the ankle fixing sleeve is 5 is semicircular, and the ankle fixing sleeve 5 and the arc strip 51 are coaxially arranged.

The telescopic mechanism is a turnbuckle bolt 8, which is convenient for manual operation and has high adjustment efficiency.

The bottom of the insertion hole 91 located on the angle positioning support rod 10 is provided with a through bottom hole 101, and the insertion shaft 22 located on the end of the plug board 21 passes through the through bottom hole 101. The shaft 22 passes through the elastic ring 102 sleeved on the angle positioning support rod 10, so that the elastic ring 102 is stuck in the annular groove of the plug-in shaft 22, so as to prevent the legs from easily taking out the plug-in board 21, so that the structure is stable .

As shown in FIG. 3 , the locking device 4 includes a double-headed cam 41 , a pair of lock pins 42 and a tension spring 43 connected between the pair of lock pins 42 . In the sinking groove 32 of the sliding plate 3, a pair of locking pins 42 are respectively slidably arranged in the side walls corresponding to the sinking groove 32, and the double-headed cam 41 is located between the pair of locking pins 42, and the locking pins 42 The driving rod 421 is pressed against the double-headed cam 41 , and when the double-headed cam 41 is in a free state, it pushes a pair of locking pins 42 to lock and connect with the locking grooves on the support plate 2 .

When in use, first rotate the double-headed cam 41 by rotating the handle coaxially connected with the double-headed cam 41, and then retract a pair of locking pins 42, and adjust the position of the ankle fixing sleeve 5 by adjusting the position of the sliding plate 3. , Adjust the number of arc-shaped inner sleeves 6 according to the size of the ankle. After the adjustment is completed, fix the ankle in the smallest arc-shaped inner sleeve 6, then adjust the knee bending angle, and turn the corresponding angle positioning support rod 10 upward to make the jack 91 opens upward, and then inserts the insert plate 21 into the jack 91. Since the rotation axis of the support plate 2 and the rotation axis of the angle positioning support rod 10 are perpendicular to each other, the structure is stable. The fixation sleeve 5 is rotated to rotate the leg along the axis of the ankle fixation sleeve 5. Since the ankle fixation sleeve 5 is inconveniently positioned, the position of the meniscus after eversion remains unchanged, which is convenient for surgery.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (5)

1. A meniscus retractor special for a knee arthroscope, comprising:

a first receptacle (1);

the second bearing assembly comprises a second bearing device (9) and a plurality of angle positioning support rods (10) coaxially pivoted on the second bearing device (9), and a jack (91) is respectively arranged on the second bearing device (9) and each angle positioning support rod (10);

the supporting plate (2), one end of the supporting plate (2) is pivoted on the first bearing device (1), an inserting plate (21) pivoted on the other end of the supporting plate (2) is matched and connected with a corresponding inserting hole (91) to enable the supporting plate (2) to be inclined at different angles, the inserting plate (21) is always in a vertical state, a through bottom hole (101) is formed in the bottom of the inserting hole (91) in the angle positioning supporting rod (10), an inserting shaft (22) located on the end portion of the inserting plate (21) penetrates through the through bottom hole (101), and meanwhile, the inserting shaft (22) penetrates through an elastic ring (102) sleeved on the angle positioning supporting rod (10) to enable the elastic ring (102) to be clamped in an annular groove of the inserting shaft (22);

a sliding plate (3) arranged transversely on the supporting plate (2);

locking means (4) for fixedly connecting the sliding plate (3) and the support plate (2) together;

the ankle fixing sleeve (5) is rotatably arranged on the sliding plate (3), two end faces of the ankle fixing sleeve (5) are respectively provided with an arc-shaped strip (51), and the arc-shaped strips (51) are connected with corresponding arc-shaped grooves (31) on the sliding plate (3) in a sliding fit manner;

a telescopic mechanism connected between the ankle fixing sleeve (5) and the sliding plate (3);

and the elastic band (7) is connected to the two ends of the ankle fixing sleeve (5).

2. The meniscus retractor for arthroscopy of the knee joint according to claim 1, further comprising a plurality of arc-shaped inner sleeves (6) with different diameters, wherein the plurality of arc-shaped inner sleeves (6) can be sequentially stacked and placed in the ankle fixing sleeve (5) according to the fixed ankle diameter.

3. The meniscus retractor for the arthroscope of the knee as claimed in claim 2, wherein the arc inner bushing (6) has a plurality of protrusions on its outer arc surface, and the protrusions are engaged with the notches on the inner wall of the ankle fixing sleeve (5) or on the inner arc surface of the adjacent arc inner bushing (6).

4. Meniscal retractor according to claim 1, characterised in that said telescopic mechanism is a turn-buckle (8).

5. The meniscus retractor for the knee arthroscope of claim 1, wherein the locking device (4) comprises a double-headed cam (41), a pair of lock pins (42) and a tension spring (43) connected between the pair of lock pins (42), the double-headed cam (41) is pivoted in the sunken groove (32) of the sliding plate (3) through a torsion spring, the pair of lock pins (42) are respectively and slidably arranged in the corresponding side walls of the sunken groove (32), the double-headed cam (41) is positioned between the pair of lock pins (42), the driving rod (421) of the lock pin (42) is pressed against the double-headed cam (41), and the double-headed cam (41) pushes the pair of lock pins (42) to be in locking connection with the lock grooves on the supporting plate (2) in the free state.

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