A positioning suture mechanism for meniscus suturing

Abstract

The application provides a positioning and suturing mechanism for meniscus suturing, which comprises a grabbing mechanism, an adjusting mechanism and a limiting mechanism, the adjusting mechanism is arranged on one side of the top end of the grabbing mechanism, the limiting mechanism is arranged on the other side of the top end of the grabbing mechanism, the inside of the adjusting mechanism is provided with a suturing needle structure, and the top end of the limiting mechanism is provided with a positioning mechanism; the suturing needle structure comprises a rotating sleeve, a suturing needle, an extension sleeve, a first extension rod and a second extension rod, the rotating sleeve is movably inserted into the inside of the adjusting mechanism, the suturing needle is movably installed in the inside of the rotating sleeve, the extension sleeve is fixedly installed on the two sides of the surface of the rotating sleeve, the first extension rod is movably installed on the outer end of the extension sleeve, and the second extension rod is movably installed on the outer end of the first extension rod. The device can be adjusted according to the meniscus shape of different patients and accurately position the position to be sutured.

Description

Technical Field

[0001] This invention relates to the field of meniscus suture technology, specifically to a positioning suture mechanism for meniscus suture. Background Technology

[0002] On the articular surface of the tibia, there are two crescent-shaped bones called the menisci. The menisci are composed of fibrocartilage, with one on the inner side and one on the outer side. They are located in the joint space of the knee joint. The anterior parts of the medial and lateral menisci are connected to the transverse ligament of the knee. Due to sports or such accidental injuries to the knee joint, the menisci often rupture.

[0003] Existing meniscus suture locators often fail to meet current needs because the positioning tubes do not clearly indicate the areas to be sutured, relying solely on the tubular structure for positioning. This can easily lead to needle misalignment. Furthermore, during positioning and suturing, it is difficult to adjust to the different meniscus shapes of different patients. Summary of the Invention

[0004] The purpose of this invention is to provide a positioning and suturing mechanism for meniscus suture, in order to solve the problems mentioned in the background art, such as the frequent occurrence of needle misalignment when using the positioning tube, which does not clearly mark the area to be sutured and only uses a tubular structure for positioning, and the difficulty in adjusting to the shape of the meniscus of different patients during positioning and suturing.

[0005] To achieve the above objectives, the present invention provides a positioning suturing mechanism for meniscus suture, including a gripping mechanism, an adjustment mechanism provided on one side of the top of the gripping mechanism, a suture needle structure provided inside the adjustment mechanism, a limiting mechanism provided on the other side of the top of the gripping mechanism, and a positioning mechanism provided at the top of the limiting mechanism.

[0006] The suture needle structure includes a rotating sleeve, a suture needle, a telescopic sleeve, a first telescopic rod, and a second telescopic rod. The rotating sleeve is movably inserted into the interior of the adjustment mechanism. The suture needle is movably installed inside the rotating sleeve. The telescopic sleeve is fixedly installed on both sides of the surface of the rotating sleeve. The first telescopic rod is movably installed at the outer end of the telescopic sleeve, and the second telescopic rod is movably installed at the outer end of the first telescopic rod.

[0007] Preferably, the suture needle structure further includes a first telescopic groove and a first spring. The telescopic sleeve has a first telescopic groove inside. One end of the first telescopic rod slides into the inside of the first telescopic groove. A first spring is movably installed between the first telescopic rod and the inside of the first telescopic groove. One end of the first spring is connected to the inner wall of the first telescopic groove, and the other end of the first spring is connected to the first telescopic rod.

[0008] Preferably, the suture needle structure further includes a second telescopic groove and a second spring. The first telescopic rod has a second telescopic groove inside. One end of the second telescopic rod slides into the interior of the second telescopic groove. A second spring is movably installed between the second telescopic rod and the interior of the second telescopic groove. One end of the second spring is connected to the inner wall of the second telescopic groove, and the other end of the second spring is connected to the second telescopic rod. The outer end of the second telescopic rod is conical.

[0009] Preferably, the adjustment mechanism includes a rotating disk, a drive gear, fixed rods, a rotating handwheel, connecting rods, and conical grooves. The rotating disk is rotatably mounted on one side of the top of the gripping mechanism. The drive gear is fixedly mounted on the top of the rotating disk. Two fixed rods are fixedly mounted on the inner wall of the drive gear. The rotating handwheel is fixedly connected to the bottom end of the fixed rods. Four connecting rods are fixedly mounted on the bottom end of the rotating disk. Eight conical grooves are provided on the inner wall of the drive gear.

[0010] Preferably, the limiting mechanism includes a fixed base, a spherical sleeve, a driven gear, a limiting rod, and limiting holes. The fixed base is fixedly installed on one side of the top of the gripping mechanism. The driven gear is rotatably installed on the top of the fixed base. The spherical sleeve is fixedly installed on the top of the fixed base. Four limiting rods are movably installed inside the driven gear. Four limiting holes are provided on the surface of the spherical sleeve. One end of the limiting rod is movably inserted into the interior of the limiting hole.

[0011] Preferably, the limiting mechanism further includes an embedded gear, a sliding groove, and a sliding rod. The driven gear is internally meshed with four embedded gears. A rack is fixedly installed on the outer surface of the limiting rod. The embedded gears mesh with the rack on the surface of the limiting rod. The top surface of the fixed base is provided with four sliding grooves. A sliding rod is fixedly installed at the bottom end of the limiting rod. The sliding rod slides into the interior of the sliding groove.

[0012] Preferably, the positioning mechanism includes a rotating ball, a shaped rod, a positioning ring, and a positioning hole. The rotating ball is movably installed inside the spherical sleeve, the shaped rod is fixedly installed on the outer surface of the rotating ball, the positioning ring is fixedly installed on the outer end of the shaped rod, and a positioning hole is provided inside the positioning ring.

[0013] Preferably, the gripping mechanism includes a bracket, a handle, a fixing frame, a connecting rod, a connecting ring, and a rotating groove. The fixing frame is fixedly installed on the top of the bracket near the limiting mechanism, the connecting rod is fixedly installed on the top of the bracket near the adjusting mechanism, the handle is fixedly installed at the bottom of the bracket, the connecting ring is fixedly installed at the top of the connecting rod, and a rotating groove is provided on the top surface of the connecting ring.

[0014] Preferably, the connecting rod is movably engaged inside the rotating groove, and the second telescopic rod is movably engaged inside the conical groove.

[0015] Preferably, the driving gear meshes with the driven gear, a first protective sleeve is detachably installed on the outer surface of the connecting ring, a second protective sleeve is detachably installed on the outer surface of the fixed base, the rotating disk rotates and engages inside the first protective sleeve, and the driven gear rotates and engages inside the second protective sleeve.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention, through the cooperation of a spherical sleeve and a rotating ball, allows the rotating ball to rotate freely within a limited angle inside the spherical sleeve during use. This enables the device to be adjusted to fit the meniscus shape of different patients, facilitating the positioning of the positioning ring and positioning hole to the location requiring suturing, thus improving the convenience and adaptability of the device.

[0018] 2. This invention utilizes the cooperation of the limiting hole and the limiting rod to ensure accurate positioning during use. Once the positioning ring and the positioning hole are aligned with the surface of the meniscus to be stitched, the operator can rotate the handwheel to drive the drive gear, which in turn drives the driven gear. The driven gear then drives the four internal embedded gears to rotate simultaneously. These gears push the limiting rod into the limiting hole, causing it to engage with the rotating ball surface and apply friction, thus fixing the rotating ball in place and preventing misalignment of the positioning ring during stitching.

[0019] 3. When suturing is required, the operator can grasp the suture needle and insert the suture needle structure into the adjustment mechanism. Then, align the second telescopic rod with the inside of two conical grooves, allowing it to engage. At this point, the entire suture needle structure can rotate along the axes of the two second telescopic rods, facilitating adjustment of the needle angle to match the position of the positioning ring and positioning hole. Next, by pushing the suture needle towards one of the second telescopic rods, the suture needle drives the rotating sleeve to press against that rod. The first telescopic rod then retracts into the first telescopic groove, bringing the suture needle structure close to the inner wall of the drive gear, facilitating further adjustment of the suture needle's orientation and positioning. Attached Figure Description

[0020] The disclosure of this invention will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. Furthermore, similar numbers in the drawings are used to denote similar components, wherein:

[0021] Figure 1This is a schematic diagram of the structure of the present invention when the first protective sleeve is installed;

[0022] Figure 2 This is a schematic diagram of the overall rear structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the overall front structure of the present invention;

[0024] Figure 4 This is a top view of the entire invention;

[0025] Figure 5 This is a cross-sectional front view of the entire invention;

[0026] Figure 6 This is a cross-sectional side view of the entire invention;

[0027] Figure 7 This is a cross-sectional view of the driven gear position in this invention;

[0028] Figure 8 For the present invention Figure 6 A partial structural diagram of part A in the middle.

[0029] In the diagram: 1. Gripping mechanism; 101. Support; 102. Handle; 103. Fixing frame; 104. Connecting rod; 105. Connecting ring; 106. Rotating groove; 2. Adjusting mechanism; 201. Rotating disk; 202. Drive gear; 203. Fixing rod; 204. Rotating handwheel; 205. Connecting rod; 206. Conical groove; 3. Suture needle structure; 301. Rotating sleeve; 302. Suture needle; 303. Telescopic sleeve; 304. First telescopic groove; 305. First spring; 06. First telescopic rod; 307. Second telescopic groove; 308. Second spring; 309. Second telescopic rod; 4. Limiting mechanism; 401. Fixed base; 402. Spherical sleeve; 403. Driven gear; 404. Embedded gear; 405. Limiting rod; 406. Sliding groove; 407. Sliding rod; 408. Limiting hole; 5. Positioning mechanism; 501. Rotating ball; 502. Irregular rod; 503. Positioning ring; 504. Positioning hole; 6. First protective sleeve; 7. Second protective sleeve. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the workpiece of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] Please see Figures 1 to 8 An embodiment of the present invention provides a positioning suturing mechanism for meniscus suture, comprising a gripping mechanism 1, an adjustment mechanism 2 provided on one side of the top of the gripping mechanism 1, a suture needle structure 3 provided inside the adjustment mechanism 2, a limiting mechanism 4 provided on the other side of the top of the gripping mechanism 1, and a positioning mechanism 5 provided at the top of the limiting mechanism 4.

[0038] The suture needle structure 3 includes a rotating sleeve 301, a suture needle 302, a telescopic sleeve 303, a first telescopic rod 306, and a second telescopic rod 309. The rotating sleeve 301 is movably inserted into the interior of the adjustment mechanism 2. The suture needle 302 is movably installed inside the rotating sleeve 301. The telescopic sleeve 303 is fixedly installed on both sides of the surface of the rotating sleeve 301. The first telescopic rod 306 is movably installed at the outer end of the telescopic sleeve 303. The second telescopic rod 309 is movably installed at the outer end of the first telescopic rod 306.

[0039] The suture needle structure 3 also includes a first telescopic groove 304 and a first spring 305. The telescopic sleeve 303 is provided with the first telescopic groove 304. One end of the first telescopic rod 306 is slidably inserted into the interior of the first telescopic groove 304. The first spring 305 is movably installed between the first telescopic rod 306 and the interior of the first telescopic groove 304. One end of the first spring 305 is connected to the inner wall of the first telescopic groove 304, and the other end of the first spring 305 is connected to the first telescopic rod 306.

[0040] The suture needle structure 3 also includes a second telescopic groove 307 and a second spring 308. The second telescopic groove 307 is provided inside the first telescopic rod 306. One end of the second telescopic rod 309 is slidably inserted into the interior of the second telescopic groove 307. The second spring 308 is movably installed between the second telescopic rod 309 and the interior of the second telescopic groove 307. One end of the second spring 308 is connected to the inner wall of the second telescopic groove 307, and the other end of the second spring 308 is connected to the second telescopic rod 309. The outer end of the second telescopic rod 309 is conical.

[0041] The device achieves precise positioning during use through the cooperation of the telescopic sleeve 303, the first telescopic rod 306, and the second telescopic rod 309. When suturing is required, the user can grasp the suture needle 302 and insert the suture needle structure 3 into the adjustment mechanism 2. At this time, the second telescopic rod 309 can be aligned with the interior of two conical grooves 206, allowing it to engage and rotate along the axes of the two second telescopic rods 309. This facilitates adjustment of the needle angle to match the positions of the positioning ring 503 and the positioning hole 504. Simultaneously, pushing the suture needle 302 towards one of the second telescopic rods 309 causes it to rotate the sleeve 301, pressing against that position. The first telescopic rod 306 then retracts into the first telescopic groove 304, bringing the suture needle structure 3 closer to the inner wall of the drive gear 202, facilitating further adjustment of the suture needle's orientation and positioning.

[0042] The adjustment mechanism 2 includes a rotating disk 201, a drive gear 202, a fixed rod 203, a rotating handwheel 204, a connecting rod 205, and a conical groove 206. The rotating disk 201 is rotatably mounted on one side of the top of the gripping mechanism 1. The drive gear 202 is fixedly mounted on the top of the rotating disk 201. Two fixed rods 203 are fixedly mounted on the inner wall of the drive gear 202. The rotating handwheel 204 is fixedly connected to the bottom end of the fixed rods 203. Four connecting rods 205 are fixedly mounted on the bottom end of the rotating disk 201. Eight conical grooves 206 are provided on the inner wall of the drive gear 202.

[0043] The limiting mechanism 4 includes a fixed base 401, a spherical sleeve 402, a driven gear 403, a limiting rod 405, and a limiting hole 408. The fixed base 401 is fixedly installed on one side of the top of the gripping mechanism 1. The driven gear 403 is rotatably installed on the top of the fixed base 401. The spherical sleeve 402 is fixedly installed on the top of the fixed base 401. Four limiting rods 405 are movably installed inside the driven gear 403. Four limiting holes 408 are provided on the surface of the spherical sleeve 402. One end of the limiting rod 405 is movably inserted into the interior of the limiting hole 408.

[0044] By combining the spherical sleeve 402 and the rotating ball 501, the device can be adjusted to fit the shape of the meniscus of different patients by allowing the rotating ball 501 to rotate freely within a limited angle inside the spherical sleeve 402 during use. This facilitates the positioning of the positioning ring 503 and the positioning hole 504 to the position to be sutured, making the device convenient to use.

[0045] The limiting mechanism 4 also includes an embedded gear 404, a sliding groove 406, and a sliding rod 407. The driven gear 403 is internally meshed with four embedded gears 404. A rack is fixedly installed on the outer surface of the limiting rod 405. The embedded gears 404 mesh with the rack on the surface of the limiting rod 405. The top surface of the fixed base 401 is provided with four sliding grooves 406. The bottom end of the limiting rod 405 is fixedly installed with a sliding rod 407. The sliding rod 407 slides into the interior of the sliding groove 406.

[0046] By using the limiting hole 408 and the limiting rod 405, when the positioning ring 503 and the positioning hole 504 are aligned with the surface of the meniscus to be sewn, the user can rotate the handwheel 204 to drive the drive gear 202 to rotate. This will cause the drive gear 202 to drive the driven gear 403 to rotate. At this time, the driven gear 403 will drive the four embedded gears 404 inside to rotate simultaneously. The embedded gears 404 will push the limiting rod 405 into the limiting hole 408, so that the limiting rod 405 is locked into the limiting hole 408 to fit tightly against the surface of the rotating ball 501, thereby applying friction and fixing the rotating ball 501. This prevents the positioning of the positioning ring 503 from being inaccurate during sewing due to the rotation of the rotating ball 501.

[0047] The positioning mechanism 5 includes a rotating ball 501, a shaped rod 502, a positioning ring 503, and a positioning hole 504. The rotating ball 501 is movably installed inside the spherical sleeve 402. The shaped rod 502 is fixedly installed on the outer surface of the rotating ball 501. The positioning ring 503 is fixedly installed on the outer end of the shaped rod 502. The positioning hole 504 is provided inside the positioning ring 503.

[0048] The gripping mechanism 1 includes a bracket 101, a handle 102, a fixing frame 103, a connecting rod 104, a connecting ring 105, and a rotating groove 106. The fixing frame 103 is fixedly installed on the top of the bracket 101 near the limiting mechanism 4. The connecting rod 104 is fixedly installed on the top of the bracket 101 near the adjusting mechanism 2. The handle 102 is fixedly installed at the bottom of the bracket 101. The connecting ring 105 is fixedly installed at the top of the connecting rod 104. The rotating groove 106 is provided on the top surface of the connecting ring 105.

[0049] The connecting rod 205 is movably engaged inside the rotating groove 106, and the second telescopic rod 309 is movably engaged inside the conical groove 206.

[0050] The driving gear 202 meshes with the driven gear 403. The outer surface of the connecting ring 105 is detachably fitted with a first protective sleeve 6. The outer surface of the fixed base 401 is detachably fitted with a second protective sleeve 7. The rotating disk 201 rotates and is inserted into the interior of the first protective sleeve 6, and the driven gear 403 rotates and is inserted into the interior of the second protective sleeve 7.

[0051] In use, the positioning and suturing mechanism for meniscus suture first positions the surface of the meniscus to be sutured using the positioning ring 503 and positioning hole 504. Then, by rotating the handwheel 204, the driving gear 202 rotates, which in turn drives the driven gear 403. At this time, the driven gear 403 drives the four internal embedded gears 404 to rotate simultaneously. The embedded gears 404 push the limiting rod 405 into the limiting hole 408, causing the limiting rod 405 to engage with the surface of the rotating ball 501, applying friction and fixing the rotating ball 501. This prevents the positioning ring 503 from becoming inaccurate due to the rotation of the rotating ball 501 during suturing. Then, the suture needle structure 3 is inserted into the fixing rod 203. At this time, the second telescopic rod 309 can be aligned with the inside of two of the conical grooves 206, allowing the second telescopic rod to extend... The rod 309 is inserted into the conical groove 206, allowing the suture needle structure 3 to rotate along the axis of the two second telescopic rods 309. This facilitates adjustment of the angle of the suture needle 302 to match the position of the positioning ring 503 and the positioning hole 504. Simultaneously, by pushing the suture needle 302 towards one of the second telescopic rods 309, the suture needle 302 drives the rotating sleeve 301 to press against the position of one of the second telescopic rods 309. At this time, the first telescopic rod 306 retracts into the first telescopic groove 304, bringing the suture needle structure 3 closer to the inner wall of the drive gear 202. This facilitates further adjustment of the orientation of the suture needle 302 for positioning. Subsequently, by pushing the handle of the suture needle 302, the suture needle 302 is pushed from the inside of the rotating sleeve 301 towards the position of the positioning ring 503, allowing the suture needle 302 to pass through the inside of the positioning hole 504 to perform meniscus suturing surgery.

[0052] Note that the above description is merely a preferred embodiment of the present invention and the techniques employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A positioning and suturing mechanism for meniscus suture, characterized in that: It includes a gripping mechanism (1), an adjusting mechanism (2) and a limiting mechanism (4). The adjusting mechanism (2) is located on one side of the top of the gripping mechanism (1), and the limiting mechanism (4) is located on the other side of the top of the gripping mechanism (1). The adjusting mechanism (2) has a suture needle structure (3) inside, and the limiting mechanism (4) has a positioning mechanism (5) at its top. The suture needle structure (3) includes a rotating sleeve (301), a suture needle (302), a telescopic sleeve (303), a first telescopic rod (306), and a second telescopic rod (309). The rotating sleeve (301) is movably inserted into the interior of the adjustment mechanism (2). The suture needle (302) is movably installed inside the rotating sleeve (301). The telescopic sleeve (303) is fixedly installed on both sides of the surface of the rotating sleeve (301). The first telescopic rod (306) is movably installed at the outer end of the telescopic sleeve (303). The second telescopic rod (309) is movably installed at the outer end of the first telescopic rod (306). The suture needle structure (3) further includes a first telescopic groove (304) and a first spring (305). The telescopic sleeve (303) is provided with a first telescopic groove (304). One end of the first telescopic rod (306) is slidably inserted into the interior of the first telescopic groove (304). A first spring (305) is movably installed between the first telescopic rod (306) and the interior of the first telescopic groove (304). One end of the first spring (305) is connected to the inner wall of the first telescopic groove (304), and the other end of the first spring (305) is connected to the first telescopic rod (306). The suture needle structure (3) further includes a second telescopic groove (307) and a second spring (308). The first telescopic rod (306) has a second telescopic groove (307) inside. One end of the second telescopic rod (309) is slidably inserted into the inside of the second telescopic groove (307). A second spring (308) is movably installed between the second telescopic rod (309) and the inside of the second telescopic groove (307). One end of the second spring (308) is connected to the inner wall of the second telescopic groove (307), and the other end of the second spring (308) is connected to the second telescopic rod (309). The outer end of the second telescopic rod (309) is conical. The adjustment mechanism (2) includes a rotating disk (201), which is rotatably mounted on one side of the top of the gripping mechanism (1). A drive gear (202) is fixedly mounted on the top of the rotating disk (201). Two fixed rods (203) are fixed on the inner wall of the drive gear (202). A rotating handwheel (204) is connected to the bottom end of the fixed rods (203). Four connecting rods (205) are mounted on the bottom end of the rotating disk (201). Eight conical grooves (206) are provided on the inner wall of the drive gear (202). The limiting mechanism (4) includes a fixed base (401), which is fixed to one side of the top of the gripping mechanism (1). A driven gear (403) is rotatably mounted on the top of the fixed base (401), and a spherical sleeve (402) is fixed on the top of the fixed base (401). Four limiting rods (405) are movably mounted inside the driven gear (403). Four limiting holes (408) are provided on the surface of the spherical sleeve (402). One end of the limiting rod (405) is movably inserted into the limiting hole (408). The limiting mechanism (4) further includes an embedded gear (404), a sliding groove (406), and a sliding rod (407). The driven gear (403) is internally meshed with four embedded gears (404). A rack is fixedly installed on the outer surface of the limiting rod (405). The embedded gears (404) mesh with the rack on the surface of the limiting rod (405). The top surface of the fixed base (401) is provided with four sliding grooves (406). A sliding rod (407) is fixedly installed at the bottom end of the limiting rod (405). The sliding rod (407) slides into the interior of the sliding groove (406).

2. The positioning and suturing mechanism for meniscus suture according to claim 1, characterized in that: The positioning mechanism (5) includes a rotating ball (501), a shaped rod (502), a positioning ring (503), and a positioning hole (504). The rotating ball (501) is movably installed inside the spherical sleeve (402). The shaped rod (502) is fixed on the outer surface of the rotating ball (501). The positioning ring (503) is fixedly installed on the outer end of the shaped rod (502). The positioning hole (504) is provided inside the positioning ring (503).

3. The positioning and suturing mechanism for meniscus suture according to claim 2, characterized in that: The gripping mechanism (1) includes a bracket (101), a handle (102), a fixing frame (103), a connecting rod (104), a connecting ring (105), and a rotating groove (106). The fixing frame (103) is fixedly installed on the side of the top of the bracket (101) near the limiting mechanism (4). The connecting rod (104) is fixedly installed on the side of the top of the bracket (101) near the adjusting mechanism (2). The handle (102) is fixedly installed at the bottom of the bracket (101). The connecting ring (105) is fixedly installed at the top of the connecting rod (104). The rotating groove (106) is provided on the top surface of the connecting ring (105).

4. The positioning and suturing mechanism for meniscus suture according to claim 3, characterized in that: The connecting rod (205) is movably engaged in the interior of the rotating groove (106), and the second telescopic rod (309) is movably engaged in the interior of the conical groove (206).

5. A positioning and suturing mechanism for meniscus suture according to claim 3, characterized in that: The driving gear (202) meshes with the driven gear (403). The outer surface of the connecting ring (105) is detachably fitted with a first protective sleeve (6). The outer surface of the fixed base (401) is detachably fitted with a second protective sleeve (7). The rotating disk (201) rotates and is inserted into the interior of the first protective sleeve (6). The driven gear (403) rotates and is inserted into the interior of the second protective sleeve (7).

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