CN103690222A - Laparoscope operating forceps - Google Patents

Abstract

The invention discloses a laparoscopic surgical forceps capable of adjusting the bending angle between the forceps head and the main body, comprising: a handle, a body, a bending connecting piece, a bending adjusting piece, a joint, and a forceps head. The elastic sleeve arranged on the shaft, the joint piece axially arranged outside the elastic sleeve, and the elastic connecting rod connected to the front end rod and the transmission part at both ends, the bending adjustment part includes a bending adjustment knob, which slides along the outer circumferential surface of the transmission part The sliding block is connected to the joint at one end and the traction body connected to the sliding block after the other end eccentrically passes through each joint plate. By turning the bending adjustment knob, the sliding block slides along the axial direction of the transmission member to tighten or loosen the traction body, and then promote the bending of the connecting piece to one side of the traction body so as to adjust the bending angle between the pliers head and the outer sleeve. The laparoscopic surgical forceps with this structure can ensure good flexibility and high degree of freedom of the forceps head.

Description

laparoscopic forceps

technical field

The invention relates to laparoscopic surgical forceps, in particular to a laparoscopic surgical forceps which can adjust the bending angle between the forceps head and the main body.

Background technique

Minimally invasive surgery is the most cutting-edge development direction of medical science and technology today. Minimally invasive surgery represented by laparoscopic surgery has gradually replaced traditional laparotomy. After more than 20 years of development, the technique of laparoscopic minimally invasive surgery has gradually matured. Because of its small surgical trauma, mild postoperative pain, short hospital stay, and good cosmetic effect, it has been widely used and satisfied in clinical practice. Effect. Conventional laparoscopic surgery is accomplished through multiple (3-5) tiny (5-12mm) incisions. With the enrichment of clinical experience and the advancement of engineering technology, the concept of minimally invasive surgery has recently been proposed. Compared with multi-hole laparoscopic surgery, minimally invasive surgery has unique advantages: the trauma is further reduced, no scars are left after surgery, the patient recovers quickly, and the infection rate is low.

Traditional minimally invasive surgical instruments are some slender rigid instruments, which generally have control handles, transmission mechanisms and front-end actuators. In minimally invasive laparoscopic surgery, due to the limited operating space and concentrated instrument placement, it is difficult to form an operating triangle with conventional laparoscopic surgical instruments, and the instruments are likely to interfere with each other and affect the operation and surgical field of view, resulting in difficult surgical operations. Moreover, the axes of the instrument and the light source are parallel, which will affect the operator's judgment of the depth and distance of the patient's tissue to a certain extent. Therefore, traditional laparoscopic surgical instruments cannot meet the development of minimally invasive laparoscopic surgery. Minimally invasive surgery now requires instruments to have more degrees of freedom and greater flexibility to increase their operability.

In addition, in traditional laparoscopic surgery, there are also surgical sites that are difficult to reach or difficult to complete. Laparoscopic surgical forceps that can be bent are an effective method to solve such problems. Therefore, a laparoscopic surgical forceps that can adjust the bending angle between the forceps head and the body is also needed among the laparoscopic surgical instruments.

Contents of the invention

In order to solve the above problems, the object of the present invention is to provide a laparoscopic surgical forceps that can adjust the bending angle between the forceps head and the body.

In order to achieve the above object, the present invention provides a laparoscopic surgical forceps that can adjust the bending angle between the forceps head and the body, including: the body includes a push rod, and an outer sleeve axially sleeved on the periphery of the push rod; the forceps head includes Two pliers mouth pieces and the front end rod connected with the two pliers mouth pieces; and a handle installed on the end of the body away from the pliers head for adjusting the opening and closing between the two pliers mouth pieces. : a curved connector for flexibly connecting the body and the pliers head; a bending adjustment member connected with the curved connector to adjust the curvature of the curved connector; and a joint for fastening the pliers head and the curved connector, wherein, The outer sleeve is provided with two corresponding slots on the side of one end close to the handle, and the curved connector includes: an elastic sleeve coaxially arranged with the push rod, at least one joint piece axially arranged outside the elastic sleeve, elastically The sleeve is axially sleeved and the two ends are respectively connected to the front end rod and the push rod. A sliding block that slides along the push rod in the hole, and a traction body that is connected to the sliding block at one end and passes through each articulation plate at the other end eccentrically and then connected to the joint.

In the laparoscopic surgical forceps provided by the present invention, it may also have the feature that each articular plate is provided with a central hole penetrated by the elastic sleeve and at least one side hole penetrated by the traction body.

In the laparoscopic surgical forceps provided by the present invention, it can also have such a feature: wherein, the body also includes a sleeve cap sleeved on the end of the outer sleeve near the handle, and the handle includes a screw threaded with the outer sleeve and drives the outer sleeve to rotate coaxially. Handle knob.

In the laparoscopic surgical forceps provided by the present invention, it can also have such a feature: wherein, the handle also includes a fixed handle, a handle push rod connected with the push rod, and a handle push rod connected to the fixed handle for driving the handle push rod. Active handle for axial movement.

In the laparoscopic surgical forceps provided by the present invention, there may also be such a feature: there is a small gap between the elastic connecting rod and the elastic sleeve, and the elastic connecting rod bends synchronously with the elastic sleeve.

In the laparoscopic surgical forceps provided by the present invention, it may also have such a feature: wherein, the curved connection part further includes a curved connection cover axially sleeved on the periphery of the articular plate and connected to the joint and the outer sleeve at both ends.

In the laparoscopic surgical forceps provided by the present invention, it may also have such a feature: wherein, the curved connection unit is provided with three articulation pieces attached to the elastic sleeve at equal intervals.

In the laparoscopic surgical forceps provided by the present invention, it can also have such a feature: wherein, the pliers head also includes a pliers head cover wrapped around the connecting part of the pliers mouth piece and the front end rod, and is embedded in the front end of the pliers head cover. The tail end of the pliers mouth piece is limited to the pin shaft at the front end of the pliers head cover.

In the laparoscopic surgical forceps provided by the present invention, it may also have the following feature: wherein, the front end of the pliers cover is provided with a groove opening, and the two jaw pieces extend to the outside of the front end of the pliers cover through the groove opening.

Function and Effect of Invention

According to the laparoscopic surgical forceps that can adjust the bending angle between the clamp head and the body according to the present invention, it includes: a bending connecting piece that flexibly connects the body and the forceps head, a bending adjusting piece that adjusts the curvature of the bending connecting piece, and the The clamp head and the curved connecting piece are tightly connected. The curved connecting piece includes an elastic sleeve coaxially arranged with the push rod, and a joint piece axially arranged outside the elastic sleeve, which is axially sleeved by the elastic sleeve and has two ends respectively. The elastic connecting rod connected with the front end rod and the push rod, the bending adjustment member includes a bending adjustment knob that is limited on the end of the outer sleeve near the handle, a sliding block that is threadedly connected with the adjustment knob and slides along the outer circumference of the push rod, and one end It is connected with the joint and the other end eccentrically passes through each joint plate and then connects to the traction body of the sliding block. By turning the bending adjustment knob, the sliding block slides along the outer circumferential surface of the push rod to tighten or loosen the traction body, thereby promoting The curved connecting piece is bent to one side of the traction body so as to adjust the bending angle between the pliers head and the outer casing. The laparoscopic surgical forceps with this structure can ensure the flexibility and high degree of freedom of the forceps head. After the forceps head is inserted into the abdominal cavity from the single-hole platform, it is easy to form an operation space and facilitate the operation of the single-hole operation. Therefore, the present invention can provide a Disclosed is a laparoscopic surgical forceps capable of adjusting the bending angle between a forceps head and a body.

Description of drawings

Fig. 1 is a structural schematic diagram of laparoscopic surgical forceps that can adjust the bending angle between the forceps head and the body in an embodiment of the present invention;

Fig. 2 is a schematic diagram of the connection of the bending connector and the bending adjustment part in the laparoscopic surgical forceps;

Fig. 3 is the schematic structural view of the outer casing in the laparoscopic surgical forceps;

Fig. 4 is the structural representation of slide block in laparoscopic surgical forceps;

Fig. 5 is the structure schematic diagram of laparoscopic surgery forceps joint piece;

Fig. 6 is a schematic diagram of the connection of the curved connector in the laparoscopic forceps in a bent state;

Fig. 7 is a schematic diagram of the connection between the body and the handle in the laparoscopic surgical forceps;

Fig. 8 is a schematic diagram of the connection between the push rod and the handle push rod in the laparoscopic surgical forceps;

Fig. 9 is a structural schematic diagram of the forceps head in the laparoscopic surgical forceps; and

Fig. 10 is a schematic diagram of the overall structure of the laparoscopic surgical forceps in the bent state of the bent connector.

In the figure, 100. Laparoscopic surgical forceps, 1. handle, 2. body, 3. bending connector, 4. bending adjustment member, 5. joint, 6. forceps head, 7. outer sleeve, 7a. slotted hole, 8 .Push rod, 8a. Ball end, 9. Sleeve cap, 10. Elastic sleeve, 11. Joint plate, 11a. Center hole, 11b. Side hole, 12. Elastic connecting rod, 13. Bending adjustment knob, 14. sliding block, 14a. connecting thread, 14b. central hole, 14c. side hole, 15. traction body, 16. fixed block, 17. fixed handle, 18. movable handle, 19. handle knob, 20. Handle push rod, 20a. spherical groove, 21. front end rod, 22. pliers mouth sheet, 23. bearing pin, 24. pliers head cover.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the following embodiments are combined with the accompanying drawings to illustrate the present invention in detail.

Example

Fig. 1 is a structural schematic diagram of a laparoscopic surgical forceps that can adjust the bending angle between the forceps head and the body in an embodiment of the present invention.

As shown in FIG. 1 , a laparoscopic surgical forceps 100 in this embodiment includes: a handle 1 , a body 2 , a bending connector 3 , a bending adjustment member 4 , a joint 5 , and a forceps head 6 .

The handle 1 and the pliers head 6 are respectively arranged at both ends of the body 2, the bending connector 3 flexibly connects the body 2 and the pliers head 6, and the bending adjustment member 4 is connected with the bending connector 3 to adjust the curvature of the bending connector 3, The joint 5 securely connects the pliers head 6 and the curved connecting piece 3 .

Fig. 2 is a schematic diagram of the connection of the bending connecting piece and the bending adjusting piece in the laparoscopic surgical forceps.

As shown in FIG. 2 , the body 2 includes: an outer sleeve 7 , a push rod 8 , and a sleeve cap 9 .

The curved connector 3 includes: an elastic sleeve 10, three joint pieces 11, an elastic connecting rod 12, and a curved connection cover not shown in the figure.

The bending adjustment member 4 includes: a bending adjustment knob 13 , a sliding block 14 , a traction body 15 , and a fixing block 16 .

As shown in FIG. 2 , the outer sleeve 7 is axially sleeved on the periphery of the push rod 8 , and the push rod 8 is arranged coaxially with the outer sleeve 7 . The sleeve cap 9 is set on the end of the outer sleeve 7 close to the handle 1 .

One end of the elastic sleeve 10 is connected to the joint 5, and the other end is connected to the outer sleeve 7 through the joint piece 11, and the elastic sleeve 10 is coaxially arranged with the push rod 8, and the three joint pieces 11 are fixed on the elastic joint at equal intervals in the axial direction. Outside the sleeve 10 , the elastic connecting rod 12 is axially fitted by the elastic sleeve 10 and its two ends are respectively connected with the front end rod 21 and the push rod 8 .

The curved connection cover is made of a flexible film, and the curved connection cover axially wraps around the periphery of the joint plate 11 and its two ends are respectively connected to the joint 5 and the outer sleeve 7 .

Fig. 3 is a schematic structural view of the outer sleeve in the laparoscopic forceps.

As shown in FIG. 3 , the outer sleeve 7 is provided with two corresponding slots 7 a on the side near the handle 1 .

Fig. 4 is a schematic structural view of the slider in the laparoscopic forceps.

As shown in Figure 4, the sliding block 14 has a circular body, a central hole 14b is provided at the center of the circular body, and connecting plates extending outward are respectively provided on the corresponding two sides of the circular body, each The end of the connecting plate away from the circular body is provided with a connecting thread 14a, and the circular body is provided with a side hole 14c at a position in contact with one of the connecting plates.

Fig. 5 is a schematic structural diagram of a laparoscopic surgery forceps joint.

As shown in Figure 5, the joint plate 11 is a circular sheet part, and a central hole 11a is provided at the center of the joint plate 11, and a side hole 11b is provided at the ring portion of the joint plate 11, and the elastic sleeve 10 passes through the center. The hole 11a runs through each joint plate 11, and the traction body 15 penetrates each joint plate 11 through the side hole 11b.

As shown in Fig. 2, the bending adjustment member 4 includes: the bending adjustment knob 13 is limited at the end of the outer sleeve 7 close to the handle 1, and the sliding block 14 is coaxially sleeved inside the bending adjustment knob 13 and along the push rod in the slot 7a. 8 sliding, one end of the traction body 15 is connected to the sliding block 14, and the other end passes through each joint piece 11 through the side hole 11b and is connected to the joint 5, and the bending adjustment knob 13 and the sliding block 14 are threaded.

In order to make the bending effect of the bending connector 3 better, it is necessary to make the traction body 15 as far away from the push rod 8 as possible.

Fig. 6 is a schematic diagram of the connection of the curved connector in the laparoscopic forceps in a bent state.

As shown in Figure 6, since the bending adjustment knob 13 is limited at the end of the outer sleeve 7 close to the handle 1, when the bending adjustment knob 13 is rotated, the sliding block 14 is driven by the threaded structure between the bending adjustment knob 13 and the sliding block 14 Sliding along the push rod 8 toward the handle 1, the traction body 15 set on the axis of the outer casing 7 is not stretchable, and the sliding block 14 tightens the traction body 15 toward the handle 1, so that the joint 5 is in contact with the traction body 15. One side of the connection is subjected to tension so as to approach the bending adjustment knob 13 , and at this time, the side of the bending connecting member 3 located on the traction body is pressed by the joint 5 to be bent and deformed.

In order to ensure that the elastic connecting rod 12 can push and pull the front end push rod 21 smoothly inside the elastic sleeve 10 in the bent state, a small gap is left between the elastic connecting rod and the elastic sleeve during design and installation, so that the elastic connecting rod 12 can The elastic sleeve 10 bends synchronously.

Fig. 7 is a schematic diagram of the connection between the body and the handle in the laparoscopic forceps.

As shown in FIG. 7 , the handle 1 includes: a fixed handle 17 , a movable handle 18 , a handle knob 19 , and a handle push rod 20 .

The handle push rod 20 is sleeved in the fixed handle 17, and the movable handle 18 is movably connected to the fixed handle 17 for driving the handle push rod 20 to move axially.

The handle knob 19 is rotatably mounted on one end of the fixed handle 17 close to the body 2 , and the handle knob 19 and the sleeve cap 9 are threaded.

The fixed handle 17 is provided with a protrusion that coincides with the curved surface of the palm of the operator at the position that is in contact with the palm of the operator, for the operator to hold the device; The ring of the operator's middle finger, the movable handle 18 is provided with a corresponding groove at the part that is in contact with the operator's ring finger and little finger, and the ring of the movable handle 18 approaches or moves away from the fixed handle 17 under the operator's middle finger , so that the handle push rod 20 reciprocates axially, and through the transmission of the push rod 8 and the elastic connecting rod 12 in turn, the opening and closing of the two pliers mouth pieces 22 is realized. Turning the handle knob 19 can drive the body 2 to rotate axially synchronously, thereby driving the pliers head 6 to rotate around the body 2 in the circumferential direction. The rotation of the handle knob 19 is completed by the operator's thumb and forefinger; the handle knob 20 and the bending knob 12 are set at the operating It is convenient for the operator to complete all operations with one hand.

Fig. 8 is a schematic diagram of the connection between the push rod and the handle push rod in the laparoscopic surgical forceps.

As shown in Figure 8, the end of the push rod 8 near the handle 1 is a ball end 8a, and the handle push rod 20 is provided with a spherical groove 20a corresponding to the ball end 8a at the end connected to the push rod 8. The head end 8 a is engaged in the spherical groove 20 a, and the handle push rod 20 transmits the axial movement to the push rod 8 .

Fig. 9 is a schematic structural view of the forceps head in the laparoscopic surgical forceps.

As shown in FIG. 9 , the pliers head 6 includes: a front end rod 21 , a pliers mouth piece 22 , a pin shaft 23 , and a pliers head sleeve 24 .

The two pliers mouth pieces 22 are connected with the front-end rod 21, the pliers head cover 24 is wrapped in the connecting part of the two pliers mouth pieces 22 and the front end rod 21, the pin shaft 23 is embedded in the front end of the pliers head cover 24 and the two pliers mouth pieces 22 The tail end is limited at the front end of the pliers cover 24.

The tails of the two pliers mouth pieces 22 are respectively provided with an arc-shaped groove, and the arc directions of the two arc-shaped grooves are opposite. The slider in the arc-shaped groove, when the front end push rod 21 is driven to move axially by the handle 1, makes the slider slide along the two arc-shaped grooves, thereby driving the opening and closing between the two pliers mouth pieces 22, and the two pliers The angle range between the mouthpieces 22 is 0° to 60°.

The side wall of the pliers head cover 24 is completely closed, the pliers head cover 24 only has a groove opening at the front end, and the two pliers mouth pieces 22 extend to the outside of the front end of the pliers head cover 24 through the groove mouth, and there are only two pliers mouth pieces in the whole pliers head 6 The working part of 22 protrudes from the groove opening and contacts the surgical operation area, so that dirt cannot enter the inside of the pliers from the side wall of the pliers cover 24, effectively reducing the pollution of the pliers 6 and facilitating disinfection and cleaning.

The pliers head cover 24 and the joint 5 are tightly connected by threads, and the front end push rod 21 and the elastic connecting rod 12 are connected by threads.

Fig. 10 is a schematic diagram of the overall structure of the laparoscopic surgical forceps in the bent state of the bent connector.

As shown in Figure 10, turn the bending adjustment knob 13 to make the sliding block 14 slide along the outer peripheral surface of the push rod 8 to tighten or loosen the traction body 15, and then impel the bending connector 3 to bend to one side of the traction body 15 so that The pliers head 6 is bent relative to the outer sleeve 15 . By turning the handle knob 19, the pliers head 6 can be rotated 360° around the outer tube, so that the pliers head 5 can be operated without dead ends during surgery.

Function and effect of embodiment

According to this embodiment, the laparoscopic surgical forceps that can adjust the bending angle between the pliers head and the body includes: a bending connecting piece that flexibly connects the body and the pliers head, a bending adjusting piece that adjusts the curvature of the bending connecting piece, and the The clamp head and the curved connecting piece are tightly connected. The curved connecting piece includes an elastic sleeve coaxially arranged with the push rod, and a joint piece axially arranged outside the elastic sleeve, which is axially sleeved by the elastic sleeve and has two ends respectively. The elastic connecting rod connected with the front end rod and the push rod, the bending adjustment member includes a bending adjustment knob that is limited on the end of the outer sleeve near the handle, a sliding block that is threadedly connected with the adjustment knob and slides along the outer circumference of the push rod, and one end It is connected with the joint and the other end eccentrically passes through each joint plate and then connects to the traction body of the sliding block. By turning the bending adjustment knob, the sliding block slides along the outer circumferential surface of the push rod to tighten or loosen the traction body, thereby promoting The curved connecting piece is bent to one side of the traction body so as to adjust the bending angle between the pliers head and the outer casing.

By turning the knob of the handle, the main body is driven to rotate axially synchronously, so that the pliers head can rotate 360° around the outer tube, so that the pliers head can be operated without dead angle during surgery. The laparoscopic surgical forceps with this structure can ensure the flexibility and high degree of freedom of the forceps head. The forceps head is inserted into the abdominal cavity from the single-hole platform, which can easily form an operation space and facilitate the operation of single-hole surgery.

In the curved connection piece, the curved connection outer cover is axially wrapped around the periphery of the articular plate and the two ends are respectively connected to the joint and the outer sleeve, so that the inside of the curved connection piece is not polluted by the operating environment.

Of course, the laparoscopic surgical forceps involved in the present invention are not limited to the structure in this embodiment.

In this embodiment, there is one side hole on the articular plate, but in the laparoscopic surgical forceps of the present invention, there may be multiple side holes.

In this embodiment, the joint plate is fixed on the elastic sleeve. In the laparoscopic surgical forceps of the present invention, the elastic sleeve and the joint plate can also be integrally formed polymer material parts, or can be made of different materials through a certain process. Formed integral parts.

In this embodiment, the push rod is used to transfer the axial movement of the handle push rod to the front end rod. In the laparoscopic surgical forceps of the present invention, the elastic rope can also be used to transfer the axial movement of the handle push rod to the front end rod.

Claims (9)

1. A laparoscopic surgical forceps that can adjust the bending angle between the forceps head and the body, comprising: the body, comprising a push rod, an outer sleeve axially sleeved on the periphery of the push rod; the forceps head, comprising two jaws and a front end rod connected to the two pliers mouth pieces; and a handle installed on the end of the body away from the pliers head for adjusting the opening and closing between the two pliers mouth pieces, characterized in that, Also includes: a curved connector for flexibly connecting the body and the pliers head; a bending adjustment part connected to the bending connection part to adjust the bending degree of the bending connection part; and joint, fastening the pliers head to the curved connector, Wherein, the outer sleeve is provided with two corresponding slots on the side of one end close to the handle, The curved connector includes: an elastic sleeve arranged coaxially with the push rod, at least one joint piece axially arranged outside the elastic sleeve, axially sleeved by the elastic sleeve, and two ends respectively connected to an elastic connecting rod connecting the front end rod and the push rod, The bending adjustment member includes: a bending adjustment knob limited at the end of the outer sleeve close to the handle, a sliding block that is threadedly connected with the bending adjustment knob and slides along the push rod in the slot hole, And one end is connected with the sliding block and the other end is connected to the traction body of the joint after eccentrically passing through each joint piece. 2. The laparoscopic surgical forceps according to claim 1, characterized in that: Wherein, each of the joint plates is provided with a central hole penetrated by the elastic sleeve and at least one side hole penetrated by the traction body. 3. The laparoscopic surgical forceps according to claim 1, characterized in that: Wherein, the body also includes a sleeve cap sleeved on the end of the outer sleeve close to the handle, The handle includes a handle knob that is threadedly connected with the outer tube and drives the outer tube to rotate coaxially. 4. laparoscopic surgical forceps according to claim 3, is characterized in that: Wherein, the handle further includes a fixed handle, a handle push rod connected to the push rod, and a movable handle connected to the fixed handle for driving the handle push rod to move axially. 5. The laparoscopic surgical forceps according to claim 1, characterized in that: Wherein, there is a small gap between the elastic connecting rod and the elastic sleeve, The elastic connecting rod is bent synchronously with the elastic sleeve. 6. The laparoscopic surgical forceps according to claim 1, characterized in that: Wherein, the curved connecting piece further includes a curved connection cover axially sleeved on the periphery of the joint plate and connected to the joint and the outer sleeve at both ends. 7. The laparoscopic surgical forceps according to claim 1, characterized in that: Wherein, the curved connection unit is provided with three joint pieces attached to the elastic sleeve at equal intervals. 8. The laparoscopic surgical forceps according to claim 1, characterized in that: Wherein, the pliers head also includes a pliers cover that is wrapped around the connecting portion of the pliers mouth piece and the front end rod, and is embedded in the front end of the pliers head cover and limits the tails of the two pliers mouth pieces at The pin shaft at the front end of the pliers cover. 9. The laparoscopic surgical forceps according to claim 8, characterized in that: Wherein, the front end of the pliers cover has a groove opening, The two pliers mouth pieces extend to the outside of the front end of the pliers head cover through the opening of the groove.

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