Manual lateral meniscus stitching instrument under arthroscope

Abstract

The invention provides a manual lateral meniscus stitching instrument under an arthroscope, and relates to the technical field of meniscus stitching. The manual lateral meniscus stitching instrument under the arthroscope comprises a sleeve, a sleeve and a puncture needle, an achilles tendon line used for stitching a meniscus is arranged in the sleeve, the achilles tendon line penetrates into the puncture needle all the time and penetrates out of a round hole, 1 cm away from a tip, in the front end of the puncture needle, an adjusting mechanism is arranged in the front end of the sleeve, and the adjusting mechanism is connected with the sleeve. The adjusting mechanism drives the sleeve to adjust the angle; an extension mechanism is arranged in the sleeve, and the extension mechanism drives the puncture needle to extend in the length direction; the puncture needle is internally provided with a thread guiding mechanism for guiding out the achilles tendon thread. The meniscus is sutured from inside to outside under a mirror, the meniscus can easily penetrate out of the upper portion and the lower portion of the torn meniscus, the technical difficulty is lowered, influences of the physiological position and the operative position of the small head of the fibula are avoided, and the anterior angle and the body part of the outer side meniscus can be sutured to be torn.

Description

Technical Field

[0001] The invention relates to the technical field of meniscus suturing, in particular to an arthroscopic manual lateral meniscus suturing device. Background Art

[0002] Meniscus tear is a common sports injury in clinical practice. The current mainstream treatment method is knee arthroscopy meniscus repair or plasty, and the corresponding surgical method is performed according to the specific type of injury seen under the microscope. In general, meniscus resection surgery is performed for patients who are older, have poor meniscus quality, or have severe meniscus damage, while meniscus suturing surgery should be performed for patients who are younger, have good meniscus quality, and are expected to have a better suturing effect. Currently commonly used meniscus suturing methods include full-inside suturing technology, inside-outside suturing technology, and outside-inside suturing technology.

[0003] Currently, there are full-internal suture suture devices such as Smith & Nephew's Fast-fi x 360 suture device and Johnson & Johnson's Truespan suture device. Such suture devices can suture the meniscus well, are easy to operate, and greatly reduce the operation time. However, these suture devices are mainly used for tears of the body and posterior horn, and more for the medial meniscus (lateral meniscus posterior horn tears are less common). Moreover, the above suture devices are disposable. If the patient has a large range of meniscus damage and needs to use multiple suture devices, the cost is relatively expensive. In addition, these meniscus suture devices have a low fault tolerance rate. Once used incorrectly or improperly, it will directly lead to the failure of the suture device, affecting its use and indirectly increasing the loss of consumables.

[0004] Currently, there are suture devices for assisting in suturing lateral meniscus tears, such as the MMII suture device from Smith & Nephew. Although this suture device can be used repeatedly and multiple stitches can be sutured for one fee, it sutures from the outside to the inside. The surgeon needs to insert the needle from outside the body into the upper and lower surfaces of the meniscus to perform the suture, which requires a high level of operation from the surgeon. In some patients with a large area of ​​meniscus damage and meniscus compression in the joint cavity, it is not easy to find the inserted needle under the microscope. In addition, for lateral meniscus injuries on the side of the body, the physiological position of the fibular head and the flexed knee position during surgery will affect the insertion position and direction of the MMII needle, making the surgery more difficult and time-consuming, increasing the probability of surgery-related risks.

[0005] In addition, for patients with combined lateral meniscus body and anterior horn injuries, the combined use of the above-mentioned suture device will increase the financial burden on patients. Summary of the invention

[0006] 1. Technical issues to be solved

[0007] In view of the deficiencies of the prior art, the present invention provides an arthroscopic manual lateral meniscus suture device, which solves the problems raised by the background art.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention is implemented through the following technical solutions: an arthroscopic manual lateral meniscus suture device, comprising a sleeve, a sleeve rotating at the front end of the sleeve, and a puncture needle extending at the front end of the sleeve, wherein the sleeve is provided with an Achilles tendon line for suturing the meniscus, the Achilles tendon line penetrates all the way to the inside of the puncture needle, and passes through a circular hole at the front end of the puncture needle and 1 cm away from the tip, and a micro-hole camera is provided at the front end of the puncture needle;

[0010] An adjustment mechanism is arranged inside the front end of the sleeve, and the adjustment mechanism drives the sleeve to adjust the angle; an extension mechanism is arranged inside the sleeve, and the extension mechanism drives the puncture needle to extend the length; a lead-in mechanism for leading out the Achilles tendon line is arranged inside the puncture needle.

[0011] Preferably, the adjusting mechanism includes a connecting frame fixedly connected to the front end of the sleeve, a first motor is arranged inside the connecting frame, an output end of the first motor is fixedly connected to a first threaded rod, an outer wall of the first threaded rod is threadedly connected to a first threaded block, an outer surface of the first threaded block is fixedly connected to a slide block, a surface of the slide block is slidably connected to a rotating shaft through a sliding cavity, and the rotating shaft is fixedly connected to the sleeve.

[0012] Preferably, a rotating shaft is further provided near the rotating shaft of the sleeve, and the rotating shaft is rotatably connected to the front end notch of the sleeve.

[0013] Preferably, the extension mechanism includes a fixed frame fixedly connected to the inside of the sleeve, a second motor is arranged inside the fixed frame, a second threaded rod is fixedly connected to the output end of the second motor, a second threaded block is threadedly connected to the outer wall of the second threaded rod, a hollow rod is fixedly connected to the surface of the second threaded block, and the front end of the hollow rod slides through the outside of the fixed frame and is fixedly connected to the puncture needle.

[0014] Preferably, sliding blocks are fixedly connected to the outer surfaces of both sides of the second threaded block, and a sliding groove is provided on the inner wall of the fixed frame, and the sliding block is slidably connected to the sliding groove.

[0015] Preferably, the guide wire mechanism includes a fixed block fixedly connected to the inside of the puncture needle, an electric telescopic rod is fixedly connected to the surface of the fixed block, a rack is provided at the telescopic end of the electric telescopic rod, a plurality of gears are meshedly connected to the side wall of the rack, a friction wheel is fixedly connected to the rear side of the gear, and the friction wheel fits tightly against the Achilles tendon line.

[0016] Preferably, the outer surface of the sleeve is also provided with a first control switch for controlling the operation of the adjustment mechanism.

[0017] Preferably, the outer surface of the sleeve is also provided with a second control switch for controlling the operation of the extension mechanism.

[0018] Preferably, the outer surface of the sleeve is also provided with a third control switch for controlling the operation of the lead mechanism.

[0019] (III) Beneficial effects

[0020] The present invention provides an arthroscopic manual lateral meniscus suture device, which has the following beneficial effects:

[0021] 1. The present invention sutures the meniscus from the inside to the outside under a microscope. Due to direct observation under the microscope, it is easy to pass through the torn meniscus from above and below, reducing the technical difficulty. Moreover, it is not affected by the physiological position of the fibular head and the surgical position, and the tears of the anterior horn and body of the lateral meniscus can be sutured.

[0022] 2. An adjustment mechanism is provided, which drives the first threaded rod to rotate through the driving action of the first motor, thereby driving the first threaded block and the slide block to move, and then driving the sleeve to rotate around the rotating shaft to achieve the adjustment of the puncture needle angle, making it suitable for most of the lateral meniscus body and anterior horn tears.

[0023] 3. An extension mechanism is provided, which drives the second threaded rod to rotate through the driving action of the second motor, and then drives the second threaded block and the hollow rod to move, so as to drive the puncture needle to extend to realize the puncture function.

[0024] 4. A wire guide mechanism is provided, which drives the rack to move through the driving action of the electric telescopic rod, and then synchronously drives the friction wheels on both sides of the Achilles tendon line to rotate, so as to drive the Achilles tendon line to be guided out through friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is an overall cross-sectional schematic diagram of the present invention;

[0027] Figure 3 It is a schematic cross-sectional view of the sleeve of the present invention;

[0028] Figure 4 For the present invention Figure 2 A schematic diagram of the structure enlargement at the center A;

[0029] Figure 5 It is a cross-sectional schematic diagram of the adjustment mechanism of the present invention;

[0030] Figure 6 It is a three-dimensional schematic diagram of the adjustment mechanism of the present invention;

[0031] Figure 7 is a cross-sectional schematic diagram of the extension mechanism of the present invention;

[0032] Figure 8 For the present invention Figure 7 A schematic diagram of the structure enlarged at B in the middle;

[0033] Fig. 9 It is a schematic diagram of the lead wire mechanism of the present invention.

[0034] Among them, 1. sleeve; 2. sleeve; 3. puncture needle; 4. adjustment mechanism; 5. extension mechanism; 6. lead mechanism; 7. first control switch; 8. second control switch; 9. micro-hole camera; 10. round hole; 11. Achilles tendon line; 12. rotating shaft; 13. third control switch;

[0035] 41. connecting frame; 42. first motor; 43. first threaded rod; 44. first threaded block; 45. slide block; 46. rotating shaft;

[0036] 51. fixed frame; 52. second motor; 53. second threaded rod; 54. second threaded block; 55. hollow rod; 56. slider; 57. slide groove;

[0037] 61. Fixed block; 62. Electric telescopic rod; 63. Rack; 64. Gear; 65. Friction wheel. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1:

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the present invention provides an arthroscopic manual lateral meniscus suture device, comprising a sleeve 1, a sleeve 2 rotating at the front end of the sleeve 1, and a puncture needle 3 extending at the front end of the sleeve 2. The puncture needle 3 is made of the same material as a 2.0 Kirschner wire. The interior of the sleeve 1 is provided with an Achilles tendon line 11 for suturing the meniscus. The Achilles tendon line 11 penetrates all the way into the interior of the puncture needle 3 and comes out from a circular hole 10 at the front end of the puncture needle 3 and 1 cm away from the tip. A microhole camera 9 is provided at the front end of the puncture needle 3.

[0041] In the above structure, the Achilles tendon line 11 passes through the sleeve 1, the sleeve 2 and the puncture needle 3 in sequence, and finally passes through the circular hole 10, thereby realizing the suturing work. Among them, the sleeve 2 can be rotated at the front end of the sleeve 1 to realize the angle adjustment, so that it is suitable for most of the lateral meniscus body and anterior horn tears, and the puncture needle 3 can be extended in length to realize the puncture function.

[0042] An adjusting mechanism 4 is provided inside the front end of the sleeve 1, and the adjusting mechanism 4 drives the sleeve 2 to adjust the angle.

[0043] The above structure, under the action of the adjustment mechanism 4, drives the sleeve 2 to rotate, thereby adjusting the angle of the puncture needle 3, making it suitable for most lateral meniscus body and anterior horn tears.

[0044] An extension mechanism 5 is disposed inside the sleeve 2, and the extension mechanism 5 drives the puncture needle 3 to extend its length.

[0045] The above structure, under the action of the extension mechanism 5, drives the puncture needle 3 to extend to achieve the puncture function.

[0046] A wire guide mechanism 6 for guiding the Achilles tendon wire 11 is provided inside the puncture needle 3 .

[0047] The above structure, under the action of the lead-in mechanism 6, drives the Achilles tendon line 11 to be guided out through friction.

[0048] Secondly, the outer surface of the sleeve 1 is also provided with a first control switch 7 for controlling the operation of the adjustment mechanism 4; the outer surface of the sleeve 1 is also provided with a second control switch 8 for controlling the operation of the extension mechanism 5; the outer surface of the sleeve 1 is also provided with a third control switch 13 for controlling the operation of the lead mechanism 6.

[0049] Embodiment 2:

[0050] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, an embodiment of the present invention provides an arthroscopic manual lateral meniscus suture device, comprising a sleeve 1, a sleeve 2 rotating at the front end of the sleeve 1, and a puncture needle 3 extending at the front end of the sleeve 2. The puncture needle 3 is made of the same material as a 2.0 Kirschner wire. The interior of the sleeve 1 is provided with an Achilles tendon line 11 for suturing the meniscus. The Achilles tendon line 11 penetrates all the way into the interior of the puncture needle 3 and comes out from a circular hole 10 at the front end of the puncture needle 3 and 1 cm away from the tip. A microhole camera 9 is provided at the front end of the puncture needle 3.

[0051] In the above structure, the Achilles tendon line 11 passes through the sleeve 1, the sleeve 2 and the puncture needle 3 in sequence, and finally passes through the circular hole 10, thereby realizing the suturing work. Among them, the sleeve 2 can be rotated at the front end of the sleeve 1 to realize the angle adjustment, so that it is suitable for most of the lateral meniscus body and anterior horn tears, and the puncture needle 3 can be extended in length to realize the puncture function.

[0052] An adjusting mechanism 4 is provided inside the front end of the sleeve 1, and the adjusting mechanism 4 drives the sleeve 2 to adjust the angle. Specifically, the adjusting mechanism 4 includes a connecting frame 41 fixedly connected to the front end of the sleeve 1, and a first motor 42 is provided inside the connecting frame 41. The output end of the first motor 42 is fixedly connected to a first threaded rod 43, and the outer wall of the first threaded rod 43 is threadedly connected to a first threaded block 44. The outer surface of the first threaded block 44 is fixedly connected to a slide block 45. The surface of the slide block 45 is slidably connected to a rotating shaft 46 through a sliding cavity. The rotating shaft 46 is fixedly connected to the sleeve 2. Secondly, a rotating shaft 12 is also provided near the rotating shaft 46 of the sleeve 2, and the rotating shaft 12 is rotatably connected to the front end notch of the sleeve 1.

[0053] The above structure, through the driving action of the first motor 42, drives the first threaded rod 43 to rotate, and then drives the first threaded block 44 and the slide block 45 to move, and then drives the sleeve 2 to rotate around the rotating shaft 12, so as to adjust the angle of the puncture needle 3, making it suitable for most of the lateral meniscus body and anterior horn tears.

[0054] An extension mechanism 5 is provided inside the sleeve 2, and the extension mechanism 5 drives the puncture needle 3 to extend its length. Specifically, the extension mechanism 5 includes a fixed frame 51 fixedly connected to the inside of the sleeve 2, and a second motor 52 is provided inside the fixed frame 51. A second threaded rod 53 is fixedly connected to the output end of the second motor 52. The outer wall of the second threaded rod 53 is threadedly connected to a second threaded block 54. The outer surfaces of both sides of the second threaded block 54 are fixedly connected to sliders 56. A sliding groove 57 is provided on the inner wall of the fixed frame 51. The slider 56 is slidably connected to the sliding groove 57 to play a role of limited sliding. A hollow rod 55 is fixedly connected to the surface of the second threaded block 54. The front end of the hollow rod 55 slides through the outside of the fixed frame 51 and is fixedly connected to the puncture needle 3.

[0055] The above structure, through the driving action of the second motor 52, drives the second threaded rod 53 to rotate, and then drives the second threaded block 54 and the hollow rod 55 to move, which can drive the puncture needle 3 to extend to achieve the puncture function.

[0056] The interior of the puncture needle 3 is provided with a lead-in mechanism 6 for guiding out the Achilles tendon line 11. Specifically, the lead-in mechanism 6 includes a fixed block 61 fixedly connected to the interior of the puncture needle 3, and the surface of the fixed block 61 is fixedly connected to an electric telescopic rod 62, and the telescopic end of the electric telescopic rod 62 is provided with a rack 63, and the side wall of the rack 63 is meshingly connected to a plurality of gears 64, and the rear side of the gear 64 is fixedly connected to a friction wheel 65, and the friction wheel 65 is tightly fitted with the Achilles tendon line 11.

[0057] The above structure, through the driving action of the electric telescopic rod 62, drives the rack 63 to move, and then synchronously drives the friction wheels 65 on both sides of the Achilles tendon line 11 to rotate, so as to drive the Achilles tendon line 11 to be guided out through friction.

[0058] Secondly, the outer surface of the sleeve 1 is also provided with a first control switch 7 for controlling the operation of the adjustment mechanism 4; the outer surface of the sleeve 1 is also provided with a second control switch 8 for controlling the operation of the extension mechanism 5; the outer surface of the sleeve 1 is also provided with a third control switch 13 for controlling the operation of the lead mechanism 6.

[0059] Working principle: When in use, when the body or anterior horn of the lateral meniscus is torn, the present invention is inserted through the incision at the medial eye, and first pierces the lateral eye from above or below the torn lateral meniscus under the microscope. When it is difficult to pierce, a sharp blade can be used to assist in opening the skin. After the tip pierces the skin, the Achilles tendon line is inserted into the round hole, the puncture needle is pulled back to the joint cavity, the Achilles tendon line is introduced, and then the skin is pierced again from below or above the meniscus to lead out the Achilles tendon line, and the Achilles tendon line is pulled out of the round hole, the present invention is withdrawn, the Achilles tendon line is knotted, and the lateral meniscus is sutured to the joint capsule. If the meniscus tear is wide, the above steps can be repeated.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Arthroscopic manual lateral meniscus suture device, characterized by: The invention comprises a sleeve (1), a sleeve (2) rotating at the front end of the sleeve (1), and a puncture needle (3) extending from the front end of the sleeve (2); the sleeve (1) is provided with an Achilles tendon line (11) for suturing the meniscus; the Achilles tendon line (11) penetrates all the way into the puncture needle (3) and comes out from a circular hole (10) at the front end of the puncture needle (3) and 1 cm away from the tip; the front end of the puncture needle (3) is provided with a micro-hole camera (9); An adjustment mechanism (4) is provided inside the front end of the sleeve (1), and the adjustment mechanism (4) drives the sleeve (2) to adjust the angle; an extension mechanism (5) is provided inside the sleeve (2), and the extension mechanism (5) drives the puncture needle (3) to extend the length; and a lead-in mechanism (6) for guiding the Achilles tendon line (11) is provided inside the puncture needle (3).

2. The arthroscopic manual lateral meniscus suture device according to claim 1, characterized in that: The adjusting mechanism (4) comprises a connecting frame (41) fixedly connected to the front end of the sleeve (1); a first motor (42) is arranged inside the connecting frame (41); an output end of the first motor (42) is fixedly connected to a first threaded rod (43); an outer wall of the first threaded rod (43) is threadedly connected to a first threaded block (44); an outer surface of the first threaded block (44) is fixedly connected to a slide block (45); a surface of the slide block (45) is slidably connected to a rotating shaft (46) via a sliding cavity; and the rotating shaft (46) is fixedly connected to the sleeve (2).

3. The arthroscopic manual lateral meniscus suture device according to claim 2, characterized in that: The sleeve (2) is also provided with a rotating shaft (12) near the rotating shaft (46), and the rotating shaft (12) is rotatably connected to the front end notch of the sleeve (1).

4. The arthroscopic manual lateral meniscus suture device according to claim 1, characterized in that: The extension mechanism (5) comprises a fixing frame (51) fixedly connected to the inside of the sleeve (2); a second motor (52) is arranged inside the fixing frame (51); a second threaded rod (53) is fixedly connected to the output end of the second motor (52); a second threaded block (54) is threadedly connected to the outer wall of the second threaded rod (53); a hollow rod (55) is fixedly connected to the surface of the second threaded block (54); the front end of the hollow rod (55) slides through the outside of the fixing frame (51) and is fixedly connected to the puncture needle (3).

5. The arthroscopic manual lateral meniscus suture device according to claim 4, characterized in that: Slide blocks (56) are fixedly connected to the outer surfaces of both sides of the second threaded block (54), and a sliding groove (57) is provided on the inner wall of the fixed frame (51), and the slide blocks (56) are slidably connected to the sliding groove (57).

6. The arthroscopic manual lateral meniscus suture device according to claim 1, characterized in that: The guide wire mechanism (6) comprises a fixed block (61) fixedly connected to the inside of the puncture needle (3); an electric telescopic rod (62) is fixedly connected to the surface of the fixed block (61); a rack (63) is provided at the telescopic end of the electric telescopic rod (62); a plurality of gears (64) are meshedly connected to the side wall of the rack (63); a friction wheel (65) is fixedly connected to the rear side of the gear (64); and the friction wheel (65) is tightly fitted to the Achilles tendon line (11).

7. The arthroscopic manual lateral meniscus suture device according to claim 1, characterized in that: The outer surface of the sleeve (1) is also provided with a first control switch (7) for controlling the operation of the adjustment mechanism (4).

8. The arthroscopic manual lateral meniscus suture device according to claim 1, characterized in that: The outer surface of the sleeve (1) is also provided with a second control switch (8) for controlling the operation of the extension mechanism (5).

9. The arthroscopic manual lateral meniscus suture device according to claim 1, characterized in that: The outer surface of the sleeve (1) is also provided with a third control switch (13) for controlling the operation of the lead-in mechanism (6).

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