Basket forceps special for medial and lateral meniscus resection operation

Abstract

The utility model discloses a pair of special basket forceps for medial and lateral meniscus resection operation, and relates to the technical field of medical instruments. The utility model comprises two holding rods, a connecting piece, an extension sleeve rod and a rotating sleeve piece, and is characterized in that the top of one holding rod is fixedly provided with the connecting piece, the bottom of one side of the connecting piece is provided with a groove body for hinging the other holding rod, one side of the connecting piece is in threaded connection with the extension sleeve rod, and the other side of the connecting piece is in threaded connection with the rotating sleeve piece. A rotating sleeve piece is hinged to the end of the extension sleeve rod through a connecting shaft; a fixed shearing head is fixed to the lower side of the end of the rotating sleeve piece, a movable shearing head is hinged to the upper side of the end of the rotating sleeve piece through a sleeve block, and a positioning shaft rod in the rotating sleeve piece is sleeved with the middle of the sleeve block. The fixed shearing head and the movable shearing head which are used for shearing can be rotationally adjusted at the end of the extension sleeve rod through mutual matching of the rotating piece and the connecting shaft, the fixed shearing head and the movable shearing head can be matched with a plug pin to be fixed after the needed use angle is adjusted, and convenience is high.

Description

Technical Field

[0001] The utility model belongs to the field of medical instruments, and in particular relates to a special basket forceps for medial and lateral meniscus removal surgery. Background Art

[0002] There are medial and lateral crescent-shaped bones on the tibial articular surface, called meniscus. The edge is thicker and closely connected to the joint capsule, while the center is thin and free. Except for the edge part that can repair itself after damage, the meniscus cannot repair itself after rupture. After the meniscus is broken, a thin and narrow fibrocartilaginous meniscus can be regenerated by the synovium. The normal meniscus has the function of increasing the concavity of the tibial condyle and lining the medial and lateral condyles of the femur to increase the stability of the joint and buffer shock. When performing surgery on the meniscus, a meniscus basket clamp is required. The surgery generally uses the basket clamp to bite the torn meniscus into pieces, or uses the planer system with its micro alternating rotatable blade to remove and suck out the debris, or uses the plasma electric knife to perform electric resection and trimming of the meniscus.

[0003] Basket forceps is an orthopedic surgical instrument used to crush and remove the meniscus. It has a scissor-like appearance and a flat incision end.

[0004] Currently, the basket forceps used in meniscus removal surgery are divided into three categories according to the direction of the shearing end, i.e., the front end for removing the meniscus is vertical, left curved and right curved. It is troublesome to change and select according to the removal site of the surgery, and it cannot be adjusted. In view of this, the present utility model is specially proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a special basket forceps for medial and lateral meniscus resection surgery.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A basket forceps specially used for medial and lateral meniscus removal surgery comprises two gripping rods, a connecting piece, an extension sleeve rod and a rotating set, wherein a connecting piece is fixed to the top of one of the gripping rods, a groove body for hinged connection of the other gripping rod is provided at the bottom of one side of the connecting piece, one side of the connecting piece is threadedly connected to the extension sleeve rod, and the end of the extension sleeve rod is hinged to the rotating set through a connecting shaft;

[0008] A fixed shearing head is fixed on the lower side of the end of the rotating sleeve, a movable shearing head is hinged on the upper side of the end of the rotating sleeve through a sleeve block, the middle part of the sleeve block is sleeved on the positioning shaft rod inside the rotating sleeve, a torsion spring is installed inside the wall of the sleeve block, one end of the torsion spring contacts the movable shearing head, and the other end of the torsion spring is fixed to the fixed sleeve inside the rotating sleeve;

[0009] A driving steel wire is fixed at the lower end of the movable shearing head, and the other end of the driving steel wire is fixedly mounted on the side of the other gripping rod;

[0010] The upper and lower ends of the rotating kit are both fixed with fan-shaped pieces, and a plurality of positioning holes for installing latches are arranged in an array on the side surface of the fan-shaped piece, and the latches are installed inside the positioning sleeve.

[0011] Optionally, the two positioning sleeves are respectively fixed to the upper and lower ends of the extension sleeve rod by fixing bolts, and a limiting sleeve is fixedly installed on the outside of the two pins, and a return spring is abutted between the limiting sleeve and the positioning sleeve, and the two return springs are respectively sleeved on the outside of the two pins.

[0012] Optionally, the rotating kit, extension sleeve rod and connecting piece are all provided with guide wheel groups for driving the wire routing, and each guide wheel group is composed of two rotating wheels symmetrically distributed on the upper and lower sides of the driving wire, and each rotating wheel is rotatably connected through a mounting shaft.

[0013] Optionally, the bottom of the connecting shaft is designed to be threaded, and the outer side of the middle part of the connecting shaft is a smooth surface wall.

[0014] Optionally, an extension handle is movably sleeved on the outside of the two grips, screw holes for threaded connection of positioning bolts are evenly spaced in the middle of the two extension handles and the grips, and metal springs that interfere with each other are fixedly installed on opposite surfaces of the two extension handles.

[0015] Optionally, anti-collision sleeves are installed inside the finger holes of the two extension handles, buffer cavities are opened at equal intervals inside the wall of the anti-collision sleeves, and the contact surface between the anti-collision sleeves and the fingers of the user is provided with multiple protrusions for increasing friction.

[0016] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0017] The utility model cooperates with the rotating kit and the connecting shaft so that the fixed shearing head and the movable shearing head used for shearing can be rotated and adjusted at the end of the extension sleeve rod. After the required angle is adjusted, they can be fixed with the pin, which is convenient. Compared with the existing equipment, the surgical instruments required to be prepared before the operation are reduced, and the medical staff can adjust the direction of the shearing end according to the shearing position during the operation.

[0018] The specific implementation modes of the present utility model are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0021] Figure 2 It is a structural diagram of the combined parts of the extension sleeve rod, the rotating sleeve and the fan-shaped member in the utility model;

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the A part;

[0023] Figure 4 for Figure 1 Schematic diagram of the structure of the B part;

[0024] Figure 5 for Figure 1 Schematic diagram of the structure of the C part;

[0025] Figure 6 for Figure 1 Schematic diagram of the D part structure.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1. Grip rod; 2. Connecting piece; 3. Extension sleeve rod; 4. Connecting shaft; 5. Rotating kit; 6. Fixed shear head; 7. Sleeve block; 8. Moving shear head; 9. Positioning shaft rod; 10. Torsion spring; 11. Fixed sleeve; 12. Driving wire; 13. Fan-shaped piece; 14. Positioning hole; 15. Pin; 16. Positioning sleeve; 17. Fixing bolt; 18. Limiting sleeve; 19. Reset spring; 20. Rotating wheel; 21. Mounting shaft; 22. Extension handle; 23. Positioning bolt; 24. Screw hole; 25. Metal spring; 26. Anti-collision sleeve; 27. Protruding end; 28. Buffer cavity.

[0028] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0029] The utility model is now described in further detail with reference to the accompanying drawings.

[0030] See also Figures 1 to 6The utility model provides a technical solution: a basket forceps specially used for medial and lateral meniscus removal surgery, comprising two gripping rods 1, a connecting piece 2, an extension sleeve rod 3 and a rotating set 5, wherein the top of one gripping rod 1 is fixed with the connecting piece 2, a groove body for hinged connection of the other gripping rod 1 is provided at the bottom of one side of the connecting piece 2, one side of the connecting piece 2 is threadedly connected to the extension sleeve rod 3, and the end of the extension sleeve rod 3 is hinged with the rotating set 5 through a connecting shaft 4;

[0031] A fixed shearing head 6 is fixed to the lower side of the end of the rotating set 5, and a movable shearing head 8 is hinged to the upper side of the end of the rotating set 5 through a sleeve block 7. The middle part of the sleeve block 7 is sleeved on the positioning shaft 9 inside the rotating set 5. A torsion spring 10 is installed inside the wall of the sleeve block 7. One end of the torsion spring 10 contacts the movable shearing head 8, and the other end of the torsion spring 10 is fixed to a fixed sleeve 11 inside the rotating set 5.

[0032] A driving wire 12 is fixed to the lower end of the movable shear head 8, and the other end of the driving wire 12 is fixedly mounted on the side of another grip rod 1;

[0033] Sector-shaped pieces 13 are fixed to the upper and lower ends of the rotating kit 5. A plurality of positioning holes 14 for installing the latch 15 are arranged on the side surface of the sector-shaped piece 13. The latch 15 is installed inside the positioning sleeve 16. Considering that the existing basket forceps used for meniscus surgery are divided into three categories according to the orientation of their shearing ends, multiple basket forceps are often required in one surgery, and they need to be replaced according to the shearing position during the surgery, which is relatively cumbersome. The utility model cooperates with the rotating kit 5 and the connecting shaft 4 so that the fixed shearing head 6 and the movable shearing head 8 used for shearing can be rotated and adjusted at the end of the extension sleeve rod 3. After adjusting the required angle, they can be fixed with the latch 15, which is highly convenient. Compared with the existing equipment, the surgical instruments that need to be prepared before the operation are reduced. During the operation, medical staff can adjust the orientation of the shearing end according to the shearing position by themselves. When adjusting, the tail end of the latch 15 is pulled. At this time, the end of the latch 15 is disengaged from the inside of the positioning hole 14. At this time, the user rotates the rotating kit 5 as needed to change the orientation angle of the shearing end.

[0034] Among them, the two positioning sleeves 16 are respectively fixed to the upper and lower ends of the extension sleeve rod 3 through the fixing bolts 17, and the limiting sleeves 18 are fixedly installed on the outside of the two pins 15, and there are return springs 19 between the limiting sleeves 18 and the positioning sleeves 16. The two return springs 19 are respectively sleeved on the outside of the two pins 15. In order to prevent the accidental touch from causing the originally adjusted shear end angle to deteriorate, the utility model designs two pins 15 so that after a single pin 15 is accidentally turned, the angle of the end of the shear end will not change.

[0035] Among them, the interior of the rotating kit 5, the extension sleeve rod 3, and the connecting piece 2 are all provided with a guide wheel group for the driving wire 12 to route. Each guide wheel group is composed of two rotating wheels 20 symmetrically distributed on the upper and lower sides of the driving wire 12, and each rotating wheel 20 is rotatably connected through the mounting shaft 21. By setting the guide wheels, the friction of the driving wire 12 is reduced, thereby avoiding the friction between the driving wire 12 and the inner wall of the rotating kit 5, the extension sleeve rod 3 or the connecting piece 2, which affects the service life of the driving wire 12.

[0036] The bottom of the connecting shaft 4 is designed as a threaded shape, and the outer side of the middle part of the connecting shaft 4 is a smooth surface wall. The connecting shaft 4 is provided to achieve a rotational connection between the rotating sleeve 5 and the extension sleeve rod 3 .

[0037] Among them, the outside of the two grips 1 is movably sleeved with an extension handle 22, and screw holes 24 for threading the positioning bolt 23 are evenly spaced in the middle of the two extension handles 22 and the grip 1, and the opposite surfaces of the two extension handles 22 are fixedly installed with metal springs 25 that interfere with each other. Considering that different doctors have different requirements for the use length of the grip, the grip 1 and the extension handle 22 of the utility model can be stretched to adjust the length, that is, the positioning bolt 23 is screwed in when stretching is required, and then the extension handle 22 can be stretched to the position outside the grip 1, and after adjusting to the required position, the positioning bolt 23 is tightened to complete the position fixation.

[0038] Among them, anti-collision sleeves 26 are installed inside the finger holes of the two extension handles 22, and buffer cavities 28 are opened at equal intervals inside the wall of the anti-collision sleeve 26, and the contact surface between the anti-collision sleeve 26 and the user's finger is provided with a plurality of protruding ends 27 for increasing friction. Considering that the user needs to wear the device for a long time during surgery, it is necessary to ensure the comfort between the user's fingers and the extension handle 22. Therefore, the anti-collision sleeve 26 is designed to contact the user's finger skin through the protruding end 27. The material of the anti-collision sleeve 26 can be set to skin-friendly material at a later stage, and the buffer cavity 28 inside the anti-collision sleeve 26 can be changed according to the thickness of the finger, thereby avoiding excessive squeezing caused by users with thicker fingers after wearing it.

[0039] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A basket forceps for medial and lateral meniscus resection surgery, comprising two gripping rods (1), a connecting piece (2), an extension sleeve rod (3) and a rotating kit (5), characterized in that: A connecting piece (2) is fixed to the top of one of the gripping rods (1), a groove for hinged connection of the other gripping rod (1) is provided at the bottom of one side of the connecting piece (2), one side of the connecting piece (2) is threadedly connected to an extension sleeve rod (3), and the end of the extension sleeve rod (3) is hingedly connected to a rotating sleeve (5) via a connecting shaft (4); A fixed shearing head (6) is fixed to the lower side of the end of the rotating sleeve (5), a movable shearing head (8) is hingedly connected to the upper side of the end of the rotating sleeve (5) through a sleeve block (7), the middle part of the sleeve block (7) is sleeved on a positioning shaft (9) inside the rotating sleeve (5), a torsion spring (10) is installed inside the wall of the sleeve block (7), one end of the torsion spring (10) is in contact with the movable shearing head (8), and the other end of the torsion spring (10) is fixed to a fixed sleeve (11) inside the rotating sleeve (5); A driving steel wire (12) is fixed to the lower end of the movable shearing head (8), and the other end of the driving steel wire (12) is fixedly mounted on the side of another gripping rod (1); The upper and lower ends of the rotating kit (5) are both fixed with fan-shaped pieces (13), and a plurality of positioning holes (14) for installing a latch (15) are arranged in an array on the side surface of the fan-shaped piece (13), and the latch (15) is installed inside the positioning sleeve (16).

2. A special basket forceps for medial and lateral meniscus removal surgery according to claim 1, characterized in that: The two positioning sleeves (16) are respectively fixed to the upper and lower ends of the extension sleeve rod (3) through fixing bolts (17), and the limiting sleeves (18) are fixedly installed outside the two latches (15), and a return spring (19) is abutted between the limiting sleeve (18) and the positioning sleeve (16), and the two return springs (19) are respectively sleeved on the outside of the two latches (15).

3. The special basket forceps for medial and lateral meniscus resection surgery according to claim 1, characterized in that: The rotating kit (5), the extension sleeve rod (3), and the connecting piece (2) are all provided with guide wheel groups for routing the driving wire (12), each guide wheel group is composed of two rotating wheels (20) symmetrically distributed on the upper and lower sides of the driving wire (12), and each rotating wheel (20) is rotatably connected via a mounting shaft (21).

4. The special basket forceps for medial and lateral meniscus removal surgery according to claim 1, characterized in that: The bottom of the connecting shaft (4) is designed to be threaded, and the outer side of the middle part of the connecting shaft (4) is a smooth surface wall.

5. The special basket forceps for medial and lateral meniscus removal surgery according to claim 1, characterized in that: The outsides of the two gripping rods (1) are movably sleeved with extension handles (22), and screw holes (24) for threaded connection of positioning bolts (23) are evenly spaced between the two extension handles (22) and the middle of the gripping rods (1), and metal springs (25) that abut against each other are fixedly mounted on the opposite surfaces of the two extension handles (22).

6. The special basket forceps for medial and lateral meniscus removal surgery according to claim 5, characterized in that: The finger holes of the two extension handles (22) are both provided with anti-collision sleeves (26), and buffer cavities (28) are provided at equal intervals inside the wall of the anti-collision sleeves (26). The contact surface between the anti-collision sleeves (26) and the fingers of the user is provided with a plurality of protrusions (27) for increasing friction.

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