Novel occlusal forceps for knee arthroscopic meniscus plasty

Abstract

The invention provides a pair of novel occlusal forceps for knee arthroscopic meniscus plasty, and relates to the technical field of occlusal forceps, the novel occlusal forceps for knee arthroscopic meniscus plasty comprises a forceps body, and the forceps body is composed of a front tube and a rear tube; the rotating part is arranged in the front pipe and the rear pipe, a first rack or a second rack is meshed with a first gear by adjusting the mounting part, so that the first driving part pulls the front pipe to move, the front pipe can rotate during moving, the angle between the front pipe and the rear pipe can be adjusted, the meshing part is aligned to the torn part of the meniscus, and the angle between the front pipe and the rear pipe is adjusted. A medical worker holds the second driving part, and the second driving part drives the occlusion part to perform occlusion, so that the torn part of the meniscus can be occluded and taken out from the body, the angular position of the occlusion part can be adjusted according to different positions of a tearing opening, the surgical requirements of various different types of tearing are met, and the medical worker can conveniently use the medical worker. Meniscus plasty can be performed more conveniently, and meniscus fragments can be taken out of the body.

Description

Technical Field

[0001] The invention relates to the technical field of biting forceps, in particular to a novel biting forceps used for meniscus plasty under knee arthroscopy. Background Art

[0002] The meniscus is located within the knee joint, between the femoral condyle and the tibial plateau. It consists of two semilunar fibrocartilaginous structures, the medial and lateral. Its edges are thick and closely connected to the internal and external joint capsules, while the central portion is relatively free and thin. The anterior and posterior ends of the meniscus are anchored to the non-articular surface of the tibial plateau, located anteriorly and posteriorly of the intercondylar spine. These are called the anterior and posterior horns of the meniscus, respectively. The area between these two horns constitutes the body of the meniscus. The structure of the meniscus enables it to act as a "spacer" within the knee joint, providing important functions such as cushioning joint pressure, stabilizing the joint, lubricating the articular cartilage, providing proprioception, and guiding knee motion. During flexion, extension, and twisting of the knee, improper forces or excessive force can cause meniscal tears, a common sports injury. Due to the anatomical location of the meniscus between the femur and tibia, traditional open surgery is invasive, offers poor exposure, and slows postoperative recovery. Arthroscopic menisceplasty is now widely used in clinical practice due to its minimally invasive nature, clear visualization, and rapid postoperative recovery.

[0003] When performing knee arthroscopic meniscus surgery, basket forceps are the most commonly used basic instrument. Their structure generally includes a forceps head, a connecting rod, and a handpiece. Conventional knee arthroscopic meniscus surgery surgical approaches include an observation approach and an operation approach. If the channel angle is limited, it is necessary to repeatedly change basket forceps of different angles, which not only affects the surgical effect, but also increases the risk of iatrogenic injury and infection due to the repeated entry and exit of the instrument into the channel. In addition, some hospitals do not routinely have basket forceps of different angles. Therefore, there is an urgent need for a new type of meniscus cutting forceps with adjustable forceps head angle. Summary of the Invention

[0004] The purpose of the present invention is to provide a new type of cutting forceps for knee arthroscopic meniscus plasty, aiming to solve the above technical problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: the new bite forceps for knee arthroscopic meniscus plasty include a forceps body: the forceps body is composed of a front tube and a rear tube; a rotating part: arranged in the front tube and the rear tube, used to drive the front tube to rotate to adjust the angle between the front tube and the rear tube; a first driving part: arranged in the rear tube, which can not only connect the front tube and the rear tube, but also pull the front tube to translate along the length direction of the rear tube; a biting part: installed at the end of the front tube away from the rear tube, to clamp the meniscus fragments; the biting part includes a fixed clamp head fixedly connected to the end of the front tube away from the rear tube, and a movable clamp head is installed at the end of the front tube away from the rear tube, and the movable clamp head is located above the fixed clamp head, and the movable clamp head can rotate toward the fixed clamp head; a second driving part: arranged in the front tube, used to drive the movable clamp head to rotate.

[0006] A further technical solution of the present invention is that the rotating part includes a first rotating shaft rotatably connected to the front tube, the surface of the first rotating shaft is rotatably connected to the first gear, and the first gear is fixedly connected to the inner wall of the front tube, and a first rack and a second rack are provided in the rear tube, and the first rack and the second rack extend into the front tube at one end close to the front tube, the first rack and the second rack are respectively located above and below the first gear, and the first rack and the second rack have overlapping positions with the first gear and can engage with the first gear.

[0007] A further technical solution of the present invention is that a mounting portion is provided in the rear tube for mounting the first rack and the second rack, and for positioning the first rack and the second rack.

[0008] A further technical solution of the present invention is that the mounting portion includes a slide rail fixedly connected to the rear tube, two sliders are slidably connected in the slide rail, and the first rack and the second rack are fixedly connected to the two sliders at one end close to the slider, and the two sliders are fixedly connected to a limiting column on one side away from the first rack and the second rack, a C-shaped ring is rotatably connected in the rear tube, a disc is fixedly connected in the C-shaped ring, and the distance between the C-shaped ring and the disc is the same as the diameter of the limiting column, the limiting column is located between the C-shaped ring and the disc, a rotating tube is fixedly connected to the side of the disc away from the slide rail, and an end of the rotating tube away from the disc extends to the outside of the rear tube.

[0009] A further technical solution of the present invention is that the first driving part includes a slide groove opened in the rear tube, a slide is slidably connected in the slide groove, a pull rod is fixedly connected to the slide, and the end of the pull rod close to the first rotating shaft is fixedly connected to the first rotating shaft, a nut is fixedly connected in the caliper body, a screw rod is threadedly connected to the nut, and the end of the screw rod close to the slide is rotatably connected to the slide, and the end of the screw rod away from the slide passes through the disc and the rotating tube in sequence and extends to the outside of the rear tube.

[0010] A further technical solution of the present invention is that the second driving part includes a second rotating shaft rotatably connected to the front tube, and the second rotating shaft is fixedly connected to the movable pliers head, the surface of the second rotating shaft is fixedly connected to the second gear, the surface of the second rotating shaft is sleeved with an elastic reset member, and the two ends of the elastic reset member are respectively fixedly connected to the second gear and the inner wall of the front tube, a fourth rack is slidably connected in the front tube, and the fourth rack is located below the second gear and meshes with the second gear, an end of the fourth rack close to the rear tube is fixedly connected to a metal pull rope, and the end of the metal pull rope away from the fourth rack extends to the outside of the front tube and extends to the top of the rear tube along the upper surfaces of the front tube and the rear tube, a ring is slidably connected to the surface of the rear tube, and the ring is fixedly connected to the metal pull rope, the surface of the ring is fixedly connected to the first handle, and the first handle is located below the rear tube, and the rear tube is fixedly connected to the second handle below one end away from the front tube.

[0011] A further technical solution of the present invention is that grooves are provided on the upper surfaces of the front tube and the rear tube, and the metal pull ropes are located in the grooves.

[0012] A further technical solution of the present invention is that the elastic reset member is a torsion spring.

[0013] The beneficial effects of the present invention are:

[0014] By adjusting the mounting portion, the first rack or the second rack is meshed with the first gear, so that the first driving portion pulls the front tube to move, and then the front tube can rotate while moving, so that the angle between the front tube and the rear tube can be adjusted, and the bite portion is aligned with the meniscus tear site. The medical staff holds the second driving portion and drives the bite portion to bite, so as to bite the meniscus tear site and remove the fragments from the body. The angle position of the bite portion can be adjusted according to the different tear sites to meet the surgical needs of various types of tears. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional view of the local structure in the front view direction of a specific embodiment of the present invention.

[0016] Figure 2 In a specific embodiment of the present invention Figure 1 A magnified schematic diagram of the structure in the middle.

[0017] Figure 3 In a specific embodiment of the present invention Figure 1 A magnified schematic diagram of the structure at point B in the middle.

[0018] Figure 4 In a specific embodiment of the present invention Figure 1 Enlarged schematic diagram of the structure at point C in the middle.

[0019] Figure 5It is a schematic diagram of the partial structure of the installation part in a specific embodiment of the present invention.

[0020] In the figure: 11. front tube; 12. rear tube; 21. first rotating shaft; 22. first gear; 23. first rack; 24. second rack; 31. slide rail; 32. slider; 33. C-ring; 34. disc; 35. limit column; 36. rotating tube; 41. slide groove; 42. slide plate; 43. pull rod; 44. nut; 45. screw rod; 61. fixed clamp head; 62. movable clamp head; 71. second rotating shaft; 72. second gear; 73. elastic reset member; 74. fourth rack; 75. metal pull rope; 76. ring; 77. first handle; 78. second handle; 79. groove. DETAILED DESCRIPTION

[0021] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1-5 As shown, a new type of biting forceps for knee arthroscopic meniscus plasty, including a forceps body, which consists of a front tube 11 and a rear tube 12. The end of the front tube 11 away from the rear tube 12 is equipped with a biting portion, which can bite the torn part of the meniscus. The biting portion includes a fixed forceps head 61 fixedly connected to the end of the front tube 11 away from the rear tube 12, and a movable forceps head 62 is installed at the end of the front tube 11 away from the rear tube 12, and the movable forceps head 62 is located above the fixed forceps head 61. The movable forceps head 62 can be rotated toward the fixed forceps head 61, so that the torn part of the meniscus can be bitten and clamped. The angle between the front tube 11 and the rear tube 12 can be adjusted to adjust the position of the biting portion, and then different angles can be adjusted according to the different tearing openings to meet various needs. To meet the surgical requirements of different types of tears, a rotating part is provided in the front tube 11 and the rear tube 12 for driving the front tube 11 to rotate, thereby adjusting the angle between the front tube 11 and the rear tube 12. A first driving part is provided in the rear tube 12, which can not only connect the front tube 11 and the rear tube 12, but also pull the front tube 11 to translate along the length direction of the rear tube 12, thereby adjusting the length distance between the rotating part and the rear tube 12, and then adjusting the length position of the rotating part. Moreover, by increasing the length between the front tube 11 and the rear tube 12, it can be convenient to disinfect them. A second driving part is provided in the front tube 11 for driving the movable clamp head 62 to rotate, so that the fixed clamp head 61 and the movable clamp head 62 can more conveniently bite the meniscus.

[0023] like Figure 3As shown, the rotating part includes a first rotating shaft 21 rotatably connected to the front tube 11, and the surface of the first rotating shaft 21 is rotatably connected to the first gear 22, and the first gear 22 is fixedly connected to the inner wall of the front tube 11, and a first rack 23 and a second rack 24 are provided in the rear tube 12, and the first rack 23 and the second rack 24 are extended into the front tube 11 at one end close to the front tube 11, and the first rack 23 and the second rack 24 are respectively located above and below the first gear 22, and the first rack 23 and the second rack 24 have an overlapping position with the first gear 22 and can mesh with the first gear 22. When the first rack 23 meshes with the first gear 22, the front tube 11 can rotate counterclockwise while moving, thereby adjusting the angle between the front tube 11 and the rear tube 12. Conversely, when the second rack 24 meshes with the first gear 22, the front tube 11 can rotate clockwise while moving, thereby further adjusting the angle between the front tube 11 and the rear tube 12.

[0024] The rear tube 12 is provided with a mounting portion for mounting the first rack 23 and the second rack 24, and can position the first rack 23 and the second rack 24 so that the first rack 23 or the second rack 24 is meshed with the first gear 22, so that the front tube 11 can be more conveniently rotated clockwise or counterclockwise while moving. The mounting portion includes a slide rail 31 fixedly connected to the rear tube 12, and two sliders 32 are slidably connected in the slide rail 31, and the ends of the first rack 23 and the second rack 24 close to the slider 32 are respectively fixedly connected to the two sliders 32, and the side surfaces of the two sliders 32 away from the first rack 23 and the second rack 24 are fixedly connected to the limiting column 35, and a C-shaped ring 33 is rotatably connected in the rear tube 12, and a circular The disc 34 is provided with a C-shaped ring 33 and a distance therebetween, and the diameter of the limiting post 35 is the same as that of the limiting post 35. The limiting post 35 is located between the C-shaped ring 33 and the disc 34. A rotating tube 36 is fixedly connected to the side of the disc 34 away from the slide rail 31, and an end of the rotating tube 36 away from the disc 34 extends to the outside of the rear tube 12. The C-shaped ring 33 and the disc 34 can be driven to rotate by rotating the rotating tube 36. When the notch on the C-shaped ring 33 rotates to the limiting post 35, the first rack 23 or the second rack 24 cannot mesh with the first gear 22. On the contrary, the first rack 23 or the second rack 24 can be positioned so that the first rack 23 or the second rack 24 meshes with the first gear 22, thereby conveniently installing and positioning the first rack 23 and the second rack 24.

[0025] like Figure 3As shown, the first driving part includes a slide groove 41 opened in the rear tube 12, and a slide plate 42 is slidably connected in the slide groove 41, and a pull rod 43 is fixedly connected to the slide plate 42, and the end of the pull rod 43 close to the first rotating shaft 21 is fixedly connected to the first rotating shaft 21, and a nut 44 is fixedly connected in the clamp body, and a screw rod 45 is threadedly connected to the inner thread of the nut 44, and the end of the screw rod 45 close to the slide plate 42 is rotatably connected to the slide plate 42, and the end of the screw rod 45 away from the slide plate 42 passes through the disc 34 and the rotating tube 36 in sequence and extends to the outside of the rear tube 12. By driving the screw rod 45 to rotate, the screw rod 45 can pull the slide plate 42 to move, and then the movement of the slide plate 42 can pull the front tube 11 to move, so that the distance between the front tube 11 and the rear tube 12 can be easily adjusted, and then the length distance between the rotating part and the rear tube 12 can be adjusted, and by increasing the length between the front tube 11 and the rear tube 12, it can be conveniently disinfected.

[0026] like Figure 2 and Figure 4 As shown, the second driving portion includes a second rotating shaft 71 rotatably connected to the front tube 11, and the second rotating shaft 71 is fixedly connected to the movable clamp head 62, the surface of the second rotating shaft 71 is fixedly connected to the second gear 72, the surface of the second rotating shaft 71 is sleeved with an elastic return member 73, and the two ends of the elastic return member 73 are respectively fixedly connected to the second gear 72 and the inner wall of the front tube 11, the elastic return member 73 is a torsion spring, and a fourth rack 74 is slidably connected to the front tube 11, and the fourth rack 74 is located below the second gear 72 and meshes with the second gear 72, the end of the fourth rack 74 close to the rear tube 12 is fixedly connected to a metal pull rope 75, and the end of the metal pull rope 75 away from the fourth rack 74 extends to the outside of the front tube 11 and extends along the upper surfaces of the front tube 11 and the rear tube 12 to the top of the rear tube 12, and the surface of the rear tube 12 is slidably connected to the sleeve The first and second handles 77 and 78 are fixedly connected to each other on the surface of the collar 76, and the first handle 77 is located below the rear tube 12. The rear tube 12 is fixedly connected to the second handle 78 below the end away from the front tube 11. The medical staff can hold the collar 76 with the first and second handles 77 and then move the collar 76 toward the second handle 78 by pulling the first handle 77. The movement of the first handle 77 can pull the metal pull rope 75 to move through the collar 76, and then the movement of the metal pull rope 75 can pull the fourth rack 74 to move. When the fourth rack 74 moves, it can drive the second gear 72 to rotate counterclockwise. The rotation of the second gear 72 can then drive the movable clamp head 62 to rotate toward the fixed clamp head 61 through the second rotating shaft 71, so that the torn part of the meniscus can be easily bitten.

[0027] Grooves 79 are provided on the upper surfaces of the front tube 11 and the rear tube 12, and the metal pull cord 75 is located in the groove 79, so as to hide the metal pull cord 75 and prevent the metal pull cord 75 from contacting the human body and causing discomfort to the human body.

[0028] Working principle: First, according to the difference of the tear, the first rack 23 or the second rack 24 is meshed with the first gear 22 by adjusting the mounting part, and then the first driving part is started, so that the first driving part pulls the front tube 11 to move, and then the front tube 11 can rotate while moving, so that the angle between the front tube 11 and the rear tube 12 can be adjusted, and then the bite part is aligned with the meniscus tear part, and the medical staff holds the second driving part and drives the bite part to bite, so that the meniscus tear part can be bitten and the fragments can be removed from the body, so that the angle position of the bite part can be adjusted according to the difference of the tear to meet the surgical needs of various types of tears.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0030] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A new cutting forceps for knee arthroscopic meniscus plasty, characterized by: The clamp body comprises a front tube (11) and a rear tube (12); A rotating portion is provided in the front tube (11) and the rear tube (12), and is used to drive the front tube (11) to rotate so as to adjust the angle between the front tube (11) and the rear tube (12); A first driving unit is arranged in the rear tube (12), and can connect the front tube (11) and the rear tube (12), and can also pull the front tube (11) to move horizontally along the length direction of the rear tube (12); The occlusal portion is installed at the end of the front tube (11) away from the rear tube (12) to clamp the meniscus fragments; The engaging portion comprises a fixed clamp head (61) fixedly connected to one end of the front tube (11) away from the rear tube (12); a movable clamp head (62) is installed at one end of the front tube (11) away from the rear tube (12); the movable clamp head (62) is located above the fixed clamp head (61), and the movable clamp head (62) can rotate toward the fixed clamp head (61); The second driving part is arranged in the front tube (11) and is used to drive the movable clamp head (62) to rotate.

2. A novel cutting forceps for knee arthroscopic meniscus plasty according to claim 1, characterized in that: The rotating portion includes a first rotating shaft (21) rotatably connected to the front tube (11), a first gear (22) is rotatably connected to the surface of the first rotating shaft (21), and the first gear (22) is fixedly connected to the inner wall of the front tube (11), a first rack (23) and a second rack (24) are provided in the rear tube (12), and one end of the first rack (23) and the second rack (24) close to the front tube (11) both extend into the front tube (11), the first rack (23) and the second rack (24) are respectively located above and below the first gear (22), and the first rack (23) and the second rack (24) have overlapping positions with the first gear (22) and can mesh with the first gear (22).

3. The novel cutting forceps for knee arthroscopic meniscus plasty according to claim 2, characterized in that: A mounting portion is provided in the rear tube (12) for mounting the first rack (23) and the second rack (24), and is capable of positioning the first rack (23) and the second rack (24).

4. The novel cutting forceps for knee arthroscopic meniscus plasty according to claim 3, characterized in that: The mounting portion includes a slide rail (31) fixedly connected to the rear tube (12), two sliders (32) being slidably connected to the slide rail (31), and the ends of the first rack (23) and the second rack (24) close to the sliders (32) are fixedly connected to the two sliders (32) respectively, and the sides of the two sliders (32) away from the first rack (23) and the second rack (24) are fixedly connected to the limiting column (35), a C-shaped ring (33) is rotatably connected to the rear tube (12), a disc (34) is fixedly connected to the C-shaped ring (33), and a distance between the C-shaped ring (33) and the disc (34) is the same as the diameter of the limiting column (35), the limiting column (35) is located between the C-shaped ring (33) and the disc (34), a rotating tube (36) is fixedly connected to the side of the disc (34) away from the slide rail (31), and the end of the rotating tube (36) away from the disc (34) extends to the outside of the rear tube (12).

5. The novel cutting forceps for knee arthroscopic meniscus plasty according to claim 4, characterized in that: The first driving part includes a slide groove (41) provided in the rear tube (12), a slide plate (42) being slidably connected in the slide groove (41), a pull rod (43) being fixedly connected to the slide plate (42), and an end of the pull rod (43) close to the first rotating shaft (21) being fixedly connected to the first rotating shaft (21), a nut (44) being fixedly connected in the caliper body, a screw rod (45) being connected to the inner thread of the nut (44), and an end of the screw rod (45) close to the slide plate (42) being rotatably connected to the slide plate (42), and an end of the screw rod (45) away from the slide plate (42) sequentially passing through the disc (34) and the rotating tube (36) and extending to the outside of the rear tube (12).

6. The novel cutting forceps for knee arthroscopic meniscus plasty according to claim 1, characterized in that: The second driving portion includes a second rotating shaft (71) rotatably connected to the front tube (11), and the second rotating shaft (71) is fixedly connected to the movable clamp head (62), the surface of the second rotating shaft (71) is fixedly connected to the second gear (72), the surface of the second rotating shaft (71) is provided with an elastic reset member (73), and the two ends of the elastic reset member (73) are respectively fixedly connected to the second gear (72) and the inner wall of the front tube (11), and the front tube (11) is slidably connected to a fourth rack (74), and the fourth rack (74) is located below the second gear (72) and meshes with the second gear (72). The fourth rack (74) A metal pull rope (75) is fixedly connected to one end close to the rear tube (12), and an end of the metal pull rope (75) away from the fourth rack (74) extends to the outside of the front tube (11) and extends along the upper surface of the front tube (11) and the rear tube (12) to the top of the rear tube (12). A ring (76) is slidably connected to the surface of the rear tube (12), and the ring (76) is fixedly connected to the metal pull rope (75). A first handle (77) is fixedly connected to the surface of the ring (76), and the first handle (77) is located below the rear tube (12). A second handle (78) is fixedly connected to the bottom of one end of the rear tube (12) away from the front tube (11).

7. The novel cutting forceps for knee arthroscopic meniscus plasty according to claim 6, characterized in that: The upper surfaces of the front tube (11) and the rear tube (12) are both provided with grooves (79), and the metal pull rope (75) is located in the grooves (79).

8. The novel cutting forceps for knee arthroscopic meniscus plasty according to claim 6, characterized in that: The elastic reset member (73) is a torsion spring.

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