Meniscus suture guide needle for meniscus surgery

Abstract

The meniscus suture guide needle comprises a puncture assembly and a locking mechanism, and the puncture assembly comprises a handle, an end cover and a puncture needle; wherein the end cover is installed at one end of the handle, the puncture needle is of a split type, and one end of the puncture needle is inserted into the end cover; the handle is moved to drive the puncture needle to penetrate through a meniscus crack, the push core suturing assembly is driven by the driving assembly to enable the line binding part to extend out of the puncture needle, so that a suture line is hung in the line binding part, then the push core suturing assembly is driven by the driving assembly to reset, and the hung suture line is collected in the puncture needle. Then the puncture needle is taken out of the meniscus, the suture line can be driven to penetrate through the meniscus crack, then an implant anchor is not needed, the suture line can be directly used for suturing the torn part of the meniscus, the safety of long-term suturing is improved, the threading mode is simplified, and the operation efficiency is improved.

Description

Technical Field

[0001] This invention relates to a suture guide needle, specifically a meniscus suture guide needle used in meniscus surgery, belonging to the field of medical device technology. Background Technology

[0002] Among many sports, such as basketball, skiing, and football, knee injuries, such as tears of the meniscus, are very common. Meniscus repair is one of the most convenient treatments for meniscus tears. Once the tear is properly closed, combined with the meniscus's own repair capabilities, its function can be effectively restored.

[0003] Conventional meniscus repair surgery involves inserting two implants, anchored to the posterior side of the meniscus, and then tightening the two implant anchors with sutures to close the meniscus tear. However, this method has certain side effects. As the implantation time increases, the implant anchors and sutures continuously exert pressure on the interior of the meniscus, causing it to gradually shrink. This reduces the contact area between the meniscus and the femoral condyle, which can easily lead to knee instability and femoral cartilage damage.

[0004] A Chinese patent entitled "A Meniscus Suture Attachment Assembly and Meniscus Suturing System" (publication number CN117064467A) discloses a meniscus suture attachment technology; however, the suture attachment assembly uses an implant anchor to close the meniscus tear, which inevitably leads to the aforementioned problems.

[0005] A Chinese patent entitled "A Meniscus Suturer" (publication number CN114587457B) discloses a meniscus suturer technology. By setting a pointed structure at the front end of the holding needle tube, the needle can be inserted into human tissue independently when disengaged, thus enabling full internal suturing and effectively solving the problem of inconvenience in full internal suturing with sutures. However, although this suturer can use the needle tube to make a hole in the meniscus and use the needle and suture to tie the hole, it requires the needle and suture to be inserted into the holding needle tube before use. Since the suture itself is usually quite soft and the inner diameter of the needle tube is usually small, the assembly of the suture is quite difficult. Therefore, a meniscus suturing guide needle for meniscus surgery is proposed. Summary of the Invention

[0006] In view of this, the present invention provides a meniscus suture guide needle for meniscus surgery to solve or alleviate the technical problems existing in the prior art, or at least provide a beneficial alternative.

[0007] The technical solution of this invention is implemented as follows: a meniscus suture guide needle for meniscus surgery, comprising a puncture assembly and a locking mechanism, wherein the puncture assembly comprises a handle, an end cap and a puncture needle;

[0008] The end cap is installed at one end of the handle. The puncture needle is a split type, with one end of the puncture needle inserted into the inside of the end cap and the other end of the puncture needle being a curved puncture section. The puncture needle is internally slidably connected to a push-core suture assembly having a push-core rod and a suture bundle section. The push-core suture assembly is used to constrain the suture inside the puncture needle. The locking mechanism is installed between the handle and the end cap to lock and fix the inserted puncture needle. The handle is internally slidably connected to a drive assembly, which is used to drive the push-core suture assembly to extend the suture bundle section out of the puncture needle.

[0009] The drive component is either a self-locking, horizontal push type or a side-press type;

[0010] The push rod is slidably connected to the inner wall of the puncture needle, and the wire bundle is located at one end of the push rod.

[0011] More preferably, the locking mechanism includes a locking knob, a threaded portion, a locking block, a locking sleeve, and a toothed groove;

[0012] The locking sleeve is located at one end of the puncture needle, and the puncture needle and the locking sleeve are integrally formed. The locking knob is rotatably connected to one end of the handle. There are several locking blocks, all of which are slidably connected to the inner side wall of the end cap. The threaded part is opened on one side of the locking knob. The locking blocks and the locking knob are all threadedly connected through the threaded part. The toothed groove is opened in the middle of the outer side wall of the locking sleeve. The side of the locking block near the locking sleeve is engaged with the toothed groove.

[0013] More preferably, the push-core stitching assembly further includes a second return spring and a baffle;

[0014] The baffle is fixedly connected to one side of the outer wall of the push rod, and the second return spring is sleeved on the outer wall of the push rod, with its two ends fixedly connected to the baffle and the locking sleeve respectively on the adjacent side.

[0015] More preferably, two latches are symmetrically fixedly connected to one side of the end cap, and two engaging grooves are symmetrically opened at one end of the handle, with the two latches respectively engaging the inner sidewalls of the two engaging grooves.

[0016] More preferably, the push-type drive assembly includes a push block, an elastic auxiliary rod, a positioning slot, a smooth groove, a locking block, and a push-slide groove;

[0017] The push-slide groove is formed on the upper surface of the handle. The push block is slidably connected to the inner wall of the push-slide groove, and the bottom of the push block and the bottom of the inner wall of the push-slide groove have a pre-existing pressure space. One end of the push rod is inserted into the inner wall of the push block. One end of the elastic auxiliary rod is fixedly connected to one side of the push block, and the other end of the elastic auxiliary rod is inserted into the inner wall of the handle. The maximum stroke of the push block is less than the length of the elastic auxiliary rod inserted into the handle. The positioning slots are symmetrically formed in the middle of both sides of the inner wall of the handle. The smoothing grooves are symmetrically formed at the bottom of both sides of the inner wall of the handle, and the positioning slots and smoothing grooves on both sides are connected. There are two locking blocks, which are symmetrically fixedly connected to both sides of the push block. The outer walls of the two locking blocks are slidably connected to the inner walls of the positioning slots and smoothing grooves, respectively.

[0018] More preferably, the side-pressure type drive assembly includes a side pressure plate, a connecting rod, a connecting block, a first return spring, a strip groove, a strip slider, and a side pressure groove;

[0019] The side pressure groove is located in the middle of the outer side wall of the handle. There are two side pressure plates and two connecting rods. One end of each side pressure plate is symmetrically hinged to the outer side wall of the handle. The outer side wall of each side pressure plate is slidably connected to the inner side wall of the side pressure groove. One end of each connecting rod is respectively hinged to the inner side wall of each side pressure plate. The connecting block is slidably connected to the middle of the inner side wall of the handle. The other ends of each connecting rod are symmetrically hinged to the outer side wall of the connecting block. One end of the push rod is inserted into the inner side wall of the connecting block. One end of the first return spring is fixedly connected to one side of the inner side wall of the connecting block. The other end of the first return spring is fixedly connected to one side of the inner side wall of the handle. The strip-shaped groove is located in the inner side wall of the handle. The strip-shaped slider is located in the outer side wall of the connecting block. The outer side wall of the strip-shaped slider is slidably connected to the inner side wall of the strip-shaped groove.

[0020] More preferably, the wire harness portion comprises a first needle and a wire harness groove;

[0021] The first needle is located at one end of the push rod, and the wire groove is formed on the outer side wall of the first needle. The first needle and the push rod are integrally formed.

[0022] More preferably, the wire harness portion comprises a first curved spring and a second needle tip;

[0023] The first curved spring is fixedly connected to one end of the push rod, and the second needle is fixedly connected to the other end of the first curved spring. The first curved spring is bent and then heat-treated to set its shape, and its initial state is a bent state.

[0024] More preferably, the wire harness portion is a ring groove type connector and a third needle;

[0025] The annular groove connecting part is fixedly connected to one end of the push rod, and the third needle is fixedly connected to the other end of the annular groove connecting part. The push rod, the annular groove connecting part and the third needle are integrally formed.

[0026] More preferably, the wire harness portion is a second curved spring;

[0027] The second curved spring is fixedly connected to one end of the push rod. After bending, the second curved spring is heat-treated and shaped, and its initial state is a bent state.

[0028] The embodiments of the present invention have the following advantages due to the adoption of the above technical solutions:

[0029] I. This invention uses a movable handle to drive the puncture needle through the meniscus tear, and a drive assembly drives the push-core suture assembly to extend the suture bundle from the puncture needle so that the suture can be hooked into the suture bundle. Then, the drive assembly drives the push-core suture assembly to reset, so as to gather the hooked suture into the puncture needle. Then, the puncture needle is removed from the meniscus, which can drive the suture through the meniscus tear. Therefore, there is no need for an implant anchor. The suture can be used directly to suture the meniscus tear, which improves the safety of long-term suturing, simplifies the suture threading method, and improves the operation efficiency.

[0030] Second, the meniscus suture guide needle of this invention can place the suture at the front end of the meniscus, so that the doctor can directly observe the direction of the suture, reduce blind spots in surgery, make the surgery more intuitive, and increase the safety of the surgery.

[0031] Third, the present invention can control the length of the exposed suture portion by moving the drive component to adapt to the tissue characteristics of different patients, and can use the self-locking property of the drive component to limit the exposed suture portion so as to pick up and put in the suture inside.

[0032] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a structural diagram of Embodiment 1 of the present invention;

[0035] Figure 2 This is a cross-sectional structural diagram of Embodiment 1 of the present invention;

[0036] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of area A structure;

[0037] Figure 4 This is a schematic diagram of the push rod structure of the present invention;

[0038] Figure 5 This is an isometric view of the push block of the present invention;

[0039] Figure 6 This is an isometric view of the locking knob of the present invention;

[0040] Figure 7 This is an isometric view of the end cap of the present invention;

[0041] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0042] Figure 9 This is a cross-sectional structural diagram of Embodiment 2 of the present invention;

[0043] Figure 10 This is an isometric view of the connecting block of the present invention;

[0044] Figure 11 The diagram shows a comparison of the push rod structures in embodiments one, three, four, and five of the present invention.

[0045] Figure 12 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0046] Figure 13 This is a schematic diagram of the puncture needle of the present invention being inserted into the meniscus;

[0047] Figure 14 This is a schematic diagram of the puncture needle of the present invention piercing the meniscus;

[0048] Figure 15 This is a schematic diagram of the wire harness section of the present invention piercing the meniscus;

[0049] Figure 16 This is a schematic diagram of the thread-attached part of the present invention.

[0050] Reference numerals: 1. Puncture assembly; 2. Locking mechanism; 3. Drive assembly; 4. Push-core suture assembly; 101. Handle; 102. End cap; 103. Puncture needle; 201. Locking knob; 202. Threaded part; 203. Locking block; 204. Locking sleeve; 205. Gear groove; 301. Push block; 302. Elastic auxiliary rod; 303. Positioning slot; 304. Smooth groove; 305. Locking block; 306. Horizontal push slide; 311. Side pressure plate; 312. Connecting rod 313. Connecting block; 314. First return spring; 315. Strip groove; 316. Strip slider; 317. Side pressure groove; 401. Push rod; 402. Second return spring; 403. Baffle; 404. Wire harness; 440. First needle; 441. Wire harness groove; 442. First curved spring; 443. Second needle; 444. Annular groove connecting part; 445. Third needle; 446. Second curved spring; 51. Tongue; 52. Engaging groove. Detailed Implementation

[0051] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0052] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.

[0053] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0054] Example 1

[0055] like Figures 1-7 As shown, this embodiment of the invention provides a meniscus suture guide needle for meniscus surgery, including a puncture assembly 1 and a locking mechanism 2. The puncture assembly 1 includes a handle 101, an end cap 102 and a puncture needle 103.

[0056] The end cap 102 is installed at one end of the handle 101. The puncture needle 103 is a split type, with one end of the puncture needle 103 inserted into the inside of the end cap 102 and the other end of the puncture needle 103 being a curved puncture part. The puncture needle 103 is internally slidably connected to a push-core suture assembly 4, which has a push-core rod 401 and a suture bundle 404. The push-core suture assembly 4 is used to constrain the suture inside the puncture needle 103. The locking mechanism 2 is installed between the handle 101 and the end cap 102 and is used to lock and fix the inserted puncture needle 103. The handle 101 is internally slidably connected to a drive assembly 3, which is used to drive the push-core suture assembly 4 to make the suture bundle 404 extend out of the puncture needle 103.

[0057] Among them, the drive component 3 is a self-locking flat push type or a side pressure type;

[0058] The push rod 401 is slidably connected to the inner wall of the puncture needle 103, and the wire bundle 404 is located at one end of the push rod 401.

[0059] In one embodiment, the locking mechanism 2 includes a locking knob 201, a threaded portion 202, a locking block 203, a locking sleeve 204, and a toothed groove 205;

[0060] The locking sleeve 204 is located at one end of the puncture needle 103. The puncture needle 103 and the locking sleeve 204 are integrally formed. The locking knob 201 is rotatably connected to one end of the handle 101. There are several locking blocks 203, all of which are slidably connected to the inner side wall of the end cap 102. The threaded part 202 is opened on one side of the locking knob 201. The locking blocks 203 and the locking knob 201 are all threadedly connected through the threaded part 202. The toothed groove 205 is opened in the middle of the outer side wall of the locking sleeve 204. The side of the locking block 203 near the locking sleeve 204 is engaged with the toothed groove 205.

[0061] By rotating the locking knob 201, the threaded part 202 drives the locking block 203 to move synchronously. The moving locking block 203 slides from the end cover 102 into the locking sleeve 204 and engages with the toothed groove 205 to lock and fix the puncture needle 103 and the locking sleeve 204 in the end cover 102.

[0062] In one embodiment, the push-core stitching assembly 4 further includes a second return spring 402 and a baffle 403;

[0063] The baffle 403 is fixedly connected to one side of the outer wall of the push rod 401, and the second reset spring 402 is sleeved on the outer wall of the push rod 401, with its two ends fixedly connected to the baffle 403 and the locking sleeve 204 respectively.

[0064] The moving push rod 401 drives the baffle 403 to move, and the moving baffle 403 drives the second return spring 402 to be compressed, so that the compressed second return spring 402 can work with the baffle 403 to reset the push rod 401.

[0065] In one embodiment, two latches 51 are symmetrically fixedly connected to one side of the end cap 102, and two engaging grooves 52 are symmetrically opened at one end of the handle 101. The two latches 51 are respectively engaged with the inner sidewalls of the two engaging grooves 52.

[0066] The locking groove 52 and locking tongue 51 are used to assemble the end cap 102 and the handle 101.

[0067] In one embodiment, the push-type drive assembly 3 includes a push block 301, an elastic auxiliary rod 302, a positioning slot 303, a smooth groove 304, a locking block 305, and a push-slide groove 306.

[0068] The push groove 306 is formed on the upper surface of the handle 101. The push block 301 is slidably connected to the inner wall of the push groove 306, and a pressure space is reserved between the bottom of the push block 301 and the bottom of the inner wall of the push groove 306. One end of the push rod 401 is inserted into the inner wall of the push block 301. One end of the elastic auxiliary rod 302 is fixedly connected to one side of the push block 301, and the other end of the elastic auxiliary rod 302 is inserted into the inner wall of the handle 101. The maximum stroke of the push block 301 is... The length of the elastic auxiliary rod 302 inserted into the handle 101 is less than that of the handle 101. The positioning slots 303 are symmetrically opened on the middle of both sides of the inner wall of the handle 101. The smoothing grooves 304 are symmetrically opened on the bottom of both sides of the inner wall of the handle 101. The positioning slots 303 and smoothing grooves 304 on both sides are connected. There are two locking blocks 305, which are symmetrically fixedly connected to both sides of the push block 301. The outer walls of the two locking blocks 305 are slidably connected to the inner walls of the positioning slots 303 and smoothing grooves 304, respectively.

[0069] By pressing the push block 301, the locking block 305 is slid from the positioning slot 303 into the smooth groove 304 to release the limit on the push block 301. At the same time, the moving push block 301 causes one end of the push rod 401 and one end of the elastic auxiliary rod 302 to bend and store force. Then, by pushing the push block 301, the locking block 305 is slid laterally in the smooth groove 304. The moving push block 301 causes the push rod 401 and the elastic auxiliary rod 302 to move. The moving elastic auxiliary rod 302 slides in the handle 101.

[0070] In one embodiment, such as Figure 11 As shown in (a), the wire harness 404 consists of a first needle 440 and a wire harness groove 441;

[0071] The first needle 440 is located at one end of the push rod 401, and the wire harness groove 441 is opened on the outer side wall of the first needle 440. The first needle 440 and the push rod 401 are integrally formed.

[0072] The first needle 440 can be inserted into the meniscus and pass through the meniscus to expose the suture groove 441, so that the suture can be hung or removed from the suture groove 441.

[0073] When the present invention is in operation: the puncture needle 103 and the push-core suture assembly 4 are designed in a separate manner so that the needle tip and handle of the meniscus suture guide needle can be separately packaged.

[0074] When it is necessary to assemble the needle and handle, simply insert the locking sleeve 204 and the push rod 401 into the handle 101 by driving the puncture needle 103. Then, by rotating the locking knob 201, the threaded part 202 drives the locking block 203 to move synchronously. The moving locking block 203 slides from the end cap 102 into the locking sleeve 204 and engages with the toothed groove 205 to lock and fix the puncture needle 103 and the locking sleeve 204 in the end cap 102. At the same time, the moving push rod 401 is inserted into the push block 301, thus completing the assembly operation.

[0075] When meniscus repair is required, such as Figure 13 and Figure 14 As shown, first, the location of the meniscus tear is determined. Then, by moving the handle 101, the puncture needle 103 is inserted into the meniscus from below the tear and exits from above. Then, by pressing the push block 301, the locking block 305 slides from the positioning slot 303 into the smoothing groove 304 to release the limitation on the push block 301. At the same time, the moving push block 301 causes one end of the push rod 401 and one end of the elastic auxiliary rod 302 to bend and store force. Then, by pushing the push block 301, the locking block 305 slides laterally within the smooth groove 304. The moving push block 301 drives the push rod 401 and the elastic auxiliary rod 302 to move. The moving elastic auxiliary rod 302 slides within the handle 101. The moving push rod 401 drives the baffle 403 and the wire harness 404 to move. The moving baffle 403 compresses the second return spring 402, and the moving wire harness 404 passes through one end of the puncture needle 103. Specifically, as shown... Figure 15 As shown, the pusher block 301 is then pushed further to fully expose the thread-binding section 404, so that the suture can be hung inside the thread-binding section 404, as shown. Figure 16As shown, during the suture hanging process, by releasing the pressure on the push block 301, the bent push rod 401 and the elastic auxiliary rod 302 drive the push block 301 to move upward. The moving push block 301 drives the locking block 305 to engage in the positioning slot 303, thereby limiting the push block 301 and the push rod 401 as a whole, preventing the suture binding part 404 from retracting into the puncture needle 103 during the suture hanging or suture retrieval process, which would affect the operation efficiency. After the suture hanging is completed, by pressing the push block 301 again and moving it in the opposite direction, the compressed second return spring 402 pushes the baffle 403 to reset the push rod 401 during the reset process. The reset push rod 401 drives the suture binding part 404 and the suture to retract into the puncture needle 103, thus constraining the suture. Then, the handle 101 is moved in the opposite direction to drive the puncture needle 103 out of the meniscus, thereby driving the suture through the meniscus tear so that the suture can be used directly to suture the meniscus tear later.

[0076] Before the puncture needle 103 pierces the meniscus, the suture groove 441 can be pushed out of the puncture needle 103 by moving the push block 301 to hang the suture. This allows the suture to be gathered and confined in the puncture needle 103 in advance, so that it can be inserted into the meniscus along with the puncture needle 103. Moreover, it is not necessary to completely push one end of the puncture needle 103 out of the meniscus. The push block 301 can drive the push rod 401 to push the first needle 440 out of the puncture needle 103, and use the end of the first needle 440 to pierce the meniscus and exit from the meniscus, so that the suture groove 441 is exposed. This allows the suture hanging in the suture groove 441 to be removed for suturing. The specific operation method can be selected according to actual needs.

[0077] After the meniscus suture guide needle is used, the locking block 203 can be slid out of the locking sleeve 204 by rotating the locking knob 201 in the opposite direction to release the fixation of the puncture needle 103, so that the puncture needle 103 and the core pusher suture assembly 4 can be taken out of the handle 101 as a whole for individual replacement or recycling.

[0078] Example 2

[0079] like Figures 1-10 As shown, this embodiment of the invention also provides a meniscus suture guide needle for meniscus surgery, including a puncture assembly 1 and a locking mechanism 2. The puncture assembly 1 includes a handle 101, an end cap 102 and a puncture needle 103.

[0080] The end cap 102 is installed at one end of the handle 101. The puncture needle 103 is a split type, with one end of the puncture needle 103 inserted into the inside of the end cap 102 and the other end of the puncture needle 103 being a curved puncture part. The puncture needle 103 is internally slidably connected to a push-core suture assembly 4, which has a push-core rod 401 and a suture bundle 404. The push-core suture assembly 4 is used to constrain the suture inside the puncture needle 103. The locking mechanism 2 is installed between the handle 101 and the end cap 102 and is used to lock and fix the inserted puncture needle 103. The handle 101 is internally slidably connected to a drive assembly 3, which is used to drive the push-core suture assembly 4 to make the suture bundle 404 extend out of the puncture needle 103.

[0081] Among them, the drive component 3 is a self-locking flat push type or a side pressure type;

[0082] The push rod 401 is slidably connected to the inner wall of the puncture needle 103, and the wire bundle 404 is located at one end of the push rod 401.

[0083] The side-pressure type drive assembly 3 includes a side pressure plate 311, a connecting rod 312, a connecting block 313, a first return spring 314, a strip groove 315, a strip slider 316, and a side pressure groove 317;

[0084] The side pressure groove 317 is located in the middle of the outer side wall of the handle 101. There are two side pressure plates 311 and two connecting rods 312. One end of each side pressure plate 311 is symmetrically hinged to the outer side wall of the handle 101. The outer side wall of the side pressure plate 311 is slidably connected to the inner side wall of the side pressure groove 317. One end of each connecting rod 312 is hinged to the inner side wall of the two side pressure plates 311. The connecting block 313 is slidably connected to the middle of the inner side wall of the handle 101. The other ends of the two connecting rods 312 are symmetrically hinged to the inner side wall of the handle 101. One end of the push rod 401 is inserted into the inner side wall of the connecting block 313 on the outer side wall of the connecting block 313. One end of the first return spring 314 is fixedly connected to one side of the inner side wall of the connecting block 313, and the other end of the first return spring 314 is fixedly connected to one side of the inner side wall of the handle 101. The strip groove 315 is opened on the inner side wall of the handle 101. The strip slider 316 is provided on the outer side wall of the connecting block 313. The outer side wall of the strip slider 316 is slidably connected to the inner side wall of the strip groove 315.

[0085] Compared to Embodiment 1, by replacing the method of using the drive assembly 3 with a side-pressing method instead of a flat-push type, during use, pressing the side pressure plate 311 drives the connecting block 313 to move via the connecting rod 312. The moving connecting block 313 drives the push rod 401, the first return spring 314, and the strip slider 316 to move. The moving push rod 401 drives the baffle 403 and the wire harness 404 to move. The moving baffle 403 drives the second return spring 402 to compress, and the moving wire harness 404 passes through one end of the puncture needle 103. The movement of the push rod 401... The movement method is the same as in Embodiment 1. The first return spring 314 moves and is stretched along with the connecting block 313. The moving strip slider 316 slides in the strip groove 315 to guide the moving connecting block 313. When the pressure on the side pressure plate 311 is released, the push rod 401 can be reset by the compressed second return spring 402, and the connecting block 313 is reset in conjunction with the stretched first return spring 314. Compared with Embodiment 1, although the side-pressure type drive assembly 3 does not have a self-locking function, its drive method is relatively more labor-saving.

[0086] Example 3

[0087] like Figures 1-12 As shown, this embodiment of the invention also provides a meniscus suture guide needle for meniscus surgery, including a puncture assembly 1 and a locking mechanism 2. The puncture assembly 1 includes a handle 101, an end cap 102 and a puncture needle 103.

[0088] The end cap 102 is installed at one end of the handle 101. The puncture needle 103 is a split type, with one end of the puncture needle 103 inserted into the inside of the end cap 102 and the other end of the puncture needle 103 being a curved puncture part. The puncture needle 103 is internally slidably connected to a push-core suture assembly 4, which has a push-core rod 401 and a suture bundle 404. The push-core suture assembly 4 is used to constrain the suture inside the puncture needle 103. The locking mechanism 2 is installed between the handle 101 and the end cap 102 and is used to lock and fix the inserted puncture needle 103. The handle 101 is internally slidably connected to a drive assembly 3, which is used to drive the push-core suture assembly 4 to make the suture bundle 404 extend out of the puncture needle 103.

[0089] Among them, the drive component 3 is a self-locking flat push type or a side pressure type;

[0090] The push rod 401 is slidably connected to the inner wall of the puncture needle 103, and the wire bundle 404 is located at one end of the push rod 401.

[0091] The difference from Example 1 is as follows: Figure 11 As shown in (b), the wire harness 404 consists of a first curved spring 442 and a second needle 443;

[0092] The first curved spring 442 is fixedly connected to one end of the push rod 401, and the second needle 443 is fixedly connected to the other end of the first curved spring 442. The first curved spring 442 is bent and then heat-treated to shape it, and its initial state is a bent state.

[0093] Compared with Embodiment 1, the first curved spring 442 and the second needle 443 are provided so that the characteristics of the structure of the first curved spring 442 can be used to hang the suture, while retaining the function that the suture bundle 404 can pass through the meniscus.

[0094] Example 4

[0095] like Figures 1-11 As shown, this embodiment of the invention also provides a meniscus suture guide needle for meniscus surgery, including a puncture assembly 1 and a locking mechanism 2. The puncture assembly 1 includes a handle 101, an end cap 102 and a puncture needle 103.

[0096] The end cap 102 is installed at one end of the handle 101. The puncture needle 103 is a split type, with one end of the puncture needle 103 inserted into the inside of the end cap 102 and the other end of the puncture needle 103 being a curved puncture part. The puncture needle 103 is internally slidably connected to a push-core suture assembly 4, which has a push-core rod 401 and a suture bundle 404. The push-core suture assembly 4 is used to constrain the suture inside the puncture needle 103. The locking mechanism 2 is installed between the handle 101 and the end cap 102 and is used to lock and fix the inserted puncture needle 103. The handle 101 is internally slidably connected to a drive assembly 3, which is used to drive the push-core suture assembly 4 to make the suture bundle 404 extend out of the puncture needle 103.

[0097] Among them, the drive component 3 is a self-locking flat push type or a side pressure type;

[0098] The push rod 401 is slidably connected to the inner wall of the puncture needle 103, and the wire bundle 404 is located at one end of the push rod 401.

[0099] The difference from Example 1 is as follows: Figure 11 As shown in (c), the wire harness 404 consists of a ring groove connector 444 and a third needle 445;

[0100] One end of the annular groove connecting part 444 is fixedly connected to one end of the push rod 401, and the third needle 445 is fixedly connected to the other end of the annular groove connecting part 444. The push rod 401, the annular groove connecting part 444 and the third needle 445 are integrally formed structures.

[0101] Compared with Embodiment 1 and Embodiment 3, the annular groove connecting part 444 and the third needle 445 are provided so that the suture can be hung by the annular groove on the annular groove connecting part 444, while retaining the function that the suture binding part 404 can pass through the meniscus. Furthermore, the push rod 401, the annular groove connecting part 444 and the third needle 445 adopt an integral molding structure, which has higher stability.

[0102] Example 5

[0103] like Figures 1-11 As shown, this embodiment of the invention also provides a meniscus suture guide needle for meniscus surgery, including a puncture assembly 1 and a locking mechanism 2. The puncture assembly 1 includes a handle 101, an end cap 102 and a puncture needle 103.

[0104] The end cap 102 is installed at one end of the handle 101. The puncture needle 103 is a split type, with one end of the puncture needle 103 inserted into the inside of the end cap 102 and the other end of the puncture needle 103 being a curved puncture part. The puncture needle 103 is internally slidably connected to a push-core suture assembly 4, which has a push-core rod 401 and a suture bundle 404. The push-core suture assembly 4 is used to constrain the suture inside the puncture needle 103. The locking mechanism 2 is installed between the handle 101 and the end cap 102 and is used to lock and fix the inserted puncture needle 103. The handle 101 is internally slidably connected to a drive assembly 3, which is used to drive the push-core suture assembly 4 to make the suture bundle 404 extend out of the puncture needle 103.

[0105] Among them, the drive component 3 is a self-locking flat push type or a side pressure type;

[0106] The push rod 401 is slidably connected to the inner wall of the puncture needle 103, and the wire bundle 404 is located at one end of the push rod 401.

[0107] The difference from Example 1 is as follows: Figure 11 As shown in (d), the wire harness 404 is a second curved spring 446;

[0108] The second curved spring 446 is fixedly connected to one end of the push rod 401. After bending, the second curved spring 446 is heat-treated and shaped, and its initial state is a bent state.

[0109] Compared with Embodiment 3, the second curved spring 446 can be used to hang the suture by utilizing its own structural features, and the function of passing through the meniscus has been removed. In specific operation, the puncture needle 103 needs to be used to penetrate the meniscus.

[0110] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A meniscus suture guide needle for use in meniscus surgery, comprising a puncture assembly (1) and a locking mechanism (2), characterized in that, The puncture assembly (1) includes a handle (101), an end cap (102), and a puncture needle (103); The end cap (102) is installed at one end of the handle (101). The puncture needle (103) is a split type. One end of the puncture needle (103) is inserted into the inside of the end cap (102). The other end of the puncture needle (103) is a curved puncture part. The puncture needle (103) is slidably connected to a push-core suture assembly (4) with a push-core rod (401) and a suture bundle (404). The push-core suture assembly (4) is used to constrain the suture inside the puncture needle (103). The locking mechanism (2) is installed between the handle (101) and the end cap (102) and is used to lock and fix the inserted puncture needle (103). The handle (101) is slidably connected to a drive assembly (3). The drive assembly (3) is used to drive the push-core suture assembly (4) to make the suture bundle (404) extend out from the puncture needle (103). The drive component (3) is either a self-locking, flat-push, or side-press type. The push rod (401) is slidably connected to the inner wall of the puncture needle (103), and the wire bundle (404) is located at one end of the push rod (401).

2. The meniscus suture guide needle for meniscus surgery according to claim 1, characterized in that: The locking mechanism (2) includes a locking knob (201), a threaded part (202), a locking block (203), a locking sleeve (204), and a toothed groove (205); The locking sleeve (204) is located at one end of the puncture needle (103), and the puncture needle (103) and the locking sleeve (204) are integrally formed. The locking knob (201) is rotatably connected to one end of the handle (101). There are several locking blocks (203), all of which are slidably connected to the inner side wall of the end cap (102). The threaded part (202) is opened on one side of the locking knob (201). Several locking blocks (203) are threadedly connected to the locking knob (201) through the threaded part (202). The toothed groove (205) is opened in the middle of the outer side wall of the locking sleeve (204). The side of the locking block (203) near the locking sleeve (204) is engaged with the toothed groove (205).

3. The meniscus suture guide needle for meniscus surgery according to claim 2, characterized in that: The push-core stitching assembly (4) also includes a second return spring (402) and a baffle (403); The baffle (403) is fixedly connected to one side of the outer wall of the push rod (401), and the second reset spring (402) is sleeved on the outer wall of the push rod (401), with its two ends fixedly connected to the side adjacent to the baffle (403) and the locking sleeve (204).

4. The meniscus suture guide needle for meniscus surgery according to claim 1, characterized in that: Two latches (51) are symmetrically fixedly connected to one side of the end cap (102), and two engaging grooves (52) are symmetrically opened at one end of the handle (101). The two latches (51) are respectively engaged with the inner sidewalls of the two engaging grooves (52).

5. The meniscus suture guide needle for meniscus surgery according to any one of claims 1-4, characterized in that: The push-type drive assembly (3) includes a push block (301), an elastic auxiliary rod (302), a positioning slot (303), a smooth groove (304), a locking block (305), and a push-slide groove (306); The push groove (306) is formed on the upper surface of the handle (101). The push block (301) is slidably connected to the inner wall of the push groove (306), and a pressure space is reserved between the bottom of the push block (301) and the bottom of the inner wall of the push groove (306). One end of the push rod (401) is inserted into the inner wall of the push block (301). One end of the elastic auxiliary rod (302) is fixedly connected to one side of the push block (301), and the other end of the elastic auxiliary rod (302) is inserted into the inner wall of the handle (101). The push block (301) has a maximum pressure space between its bottom and the bottom of the inner wall of the push groove (101). The maximum stroke is less than the length of the elastic auxiliary rod (302) inserted into the handle (101). The positioning slots (303) are symmetrically opened on the middle of both sides of the inner wall of the handle (101). The smooth grooves (304) are symmetrically opened on the bottom of both sides of the inner wall of the handle (101). The positioning slots (303) and smooth grooves (304) on both sides are connected. There are two locking blocks (305), which are symmetrically fixedly connected to both sides of the push block (301). The outer walls of the two locking blocks (305) are slidably connected to the inner walls of the positioning slots (303) and smooth grooves (304) respectively.

6. The meniscus suture guide needle for meniscus surgery according to any one of claims 1-4, characterized in that: The side-pressure type drive assembly (3) includes a side pressure plate (311), a connecting rod (312), a connecting block (313), a first return spring (314), a strip groove (315), a strip slider (316), and a side pressure groove (317); The side pressure groove (317) is located in the middle of the outer side wall of the handle (101). There are two side pressure plates (311) and two connecting rods (312). One end of each side pressure plate (311) is symmetrically hinged to the outer side wall of the handle (101). The outer side wall of each side pressure plate (311) is slidably connected to the inner side wall of the side pressure groove (317). One end of each connecting rod (312) is respectively hinged to the inner side wall of the two side pressure plates (311). The connecting block (313) is slidably connected to the middle of the inner side wall of the handle (101). The other end of each connecting rod (312) is symmetrically hinged to the inner side wall of the handle (101). The outer wall of the connecting block (313) has one end of the push rod (401) inserted into the inner wall of the connecting block (313), one end of the first return spring (314) is fixedly connected to one side of the inner wall of the connecting block (313), and the other end of the first return spring (314) is fixedly connected to one side of the inner wall of the handle (101). The strip groove (315) is opened on the inner wall of the handle (101), and the strip slider (316) is provided on the outer wall of the connecting block (313). The outer wall of the strip slider (316) is slidably connected to the inner wall of the strip groove (315).

7. The meniscus suture guide needle for meniscus surgery according to any one of claims 1-4, characterized in that: The wire harness (404) consists of a first needle (440) and a wire harness groove (441); The first needle (440) is located at one end of the push rod (401), and the wire groove (441) is opened on the outer side wall of the first needle (440). The first needle (440) and the push rod (401) are integrally formed.

8. The meniscus suture guide needle for meniscus surgery according to any one of claims 1-4, characterized in that: The wire harness (404) consists of a first curved spring (442) and a second needle (443); The first curved spring (442) is fixedly connected to one end of the push rod (401), and the second needle (443) is fixedly connected to the other end of the first curved spring (442). The first curved spring (442) is bent and then heat-treated to shape it, and its initial state is a bent state.

9. The meniscus suture guide needle for meniscus surgery according to any one of claims 1-4, characterized in that: The wire harness (404) consists of a ring groove connector (444) and a third needle (445); The annular groove connecting part (444) is fixedly connected to one end of the push rod (401), and the third needle (445) is fixedly connected to the other end of the annular groove connecting part (444). The push rod (401), the annular groove connecting part (444) and the third needle (445) are integrally formed.

10. The meniscus suture guide needle for meniscus surgery according to any one of claims 1-4, characterized in that: The wire harness (404) is a second curved spring (446); The second curved spring (446) is fixedly connected to one end of the push rod (401). After bending, the second curved spring (446) is heat-treated and shaped. Its initial state is a bent state.

Images