Minimally invasive surgical instrument for puncture and cutting

Abstract

The present application discloses a minimally invasive surgical instrument for puncture and cutting, belonging to the field of surgical instruments and used for the treatment of carpal tunnel syndrome. It includes a sterile arc-shaped needle and a wire saw, and the wire saw is connected to the tail of the sterile arc-shaped needle; the diameter of the sterile arc-shaped needle is 0.4 mm to 0.6 mm, and the length is 13 mm to 25 mm; the diameter of the wire saw is 0.07 mm to 0.09 mm, and the length of the wire saw is 30 mm to 50 mm. In view of the above technical solution, the present application has the advantages of simple structure, convenient operation, extremely small surgical wound, low surgical cost, etc., and can be applied to minimally invasive surgery for puncture and cutting.

Description

Technical Field

[0001] The present invention belongs to the field of surgical instruments, and more particularly, to a minimally invasive surgical instrument for puncture and cutting. Background Art

[0002] Taking carpal tunnel syndrome as an example, carpal tunnel syndrome is a group of symptoms and signs manifested by the median nerve being compressed in the carpal tunnel, and it is the most common one among peripheral nerve entrapment syndromes. The carpal tunnel is formed by the carpal bones at the bottom and on both sides, and is covered by the transverse carpal ligament on the top to form a bone and fiber tunnel. In the carpal tunnel, there are the flexor pollicis longus tendon, the flexor digitorum profundus and superficialis tendons of the 2nd to 4th fingers, and the median nerve passing through. The median nerve is the most superficial, located between the transverse carpal ligament and other tendons. The flexor pollicis longus tendon is wrapped by the radial bursa, and the other tendons are wrapped by the ulnar bursa. When the wrist joint is palmar flexed, the median nerve is compressed, and when clenching the fist forcefully, the compression is even more severe. After the median nerve exits the carpal tunnel, it branches to innervate the thenar muscles except the adductor pollicis, the 1st and 2nd lumbrical muscles, the radial palm and the skin sensation of 3.5 fingers. If carpal tunnel syndrome is not treated, it will cause finger numbness, atrophy of the thenar muscles, functional impairment of the affected limb caused by finger numbness and limited thumb movement. Therefore, surgical incision of the transverse carpal ligament is an important means for treating carpal tunnel syndrome.

[0003] For the surgical treatment of the transverse carpal ligament, open surgery and arthroscopic surgery of the wrist joint are generally adopted. Although open surgery can completely incise the transverse carpal ligament and fully release the median nerve at present, the surgical incision is relatively large and prone to complications, such as columnar pain, scar pain, pseudo-neuroma of the palmar cutaneous branch of the median nerve, and infection, etc. With the progress of technology, endoscopes have been widely used in clinical practice. Because of the small surgical incision and quick postoperative recovery, the wrist arthroscope, as a kind of endoscope, has become a treatment means for treating wrist diseases. However, the wrist arthroscope system is relatively expensive and can only be available in large general hospitals, and it is difficult for primary hospitals to bear the purchase cost; moreover, the learning curve time of the wrist arthroscope is relatively long, the technology is not easy to master, and the usage cost is relatively high, which will all restrict the clinical use of the wrist arthroscope. Therefore, there has not been a surgical instrument with a small surgical incision, low cost and easy to master for carpal tunnel syndrome so far. Summary of the Invention

[0004] The purpose of the present invention is to provide a minimally invasive surgical instrument for puncture and cutting, which has the advantages of simple structure, convenient operation, extremely small surgical wound, low surgical cost, etc., can be mastered within a relatively short training time, and is applicable to minimally invasive surgery for puncture and cutting.

[0005] To achieve the above object, the present invention is realized through the following technical solutions:

[0006] The minimally invasive surgical instrument for puncture and cutting described in the present invention includes a sterile arc-shaped needle and a wire saw. The wire saw is connected to the tail of the sterile arc-shaped needle and integrated with the sterile arc-shaped needle. The diameter of the sterile arc-shaped needle is 0.4 mm to 0.6 mm, and the length is 13 mm to 25 mm. The diameter of the wire saw is 0.07 mm to 0.09 mm, and the length of the wire saw is 30 mm to 50 mm.

[0007] Furthermore, in the present invention, the diameter of the sterile arc-shaped needle is 0.4 mm and the length is 13 mm. The diameter of the wire saw is 0.07 mm and the length is 30 mm.

[0008] Furthermore, in the present invention, the diameter of the sterile arc-shaped needle is 0.5 mm and the length is 18 mm. The diameter of the wire saw is 0.08 mm and the length is 40 mm.

[0009] Furthermore, in the present invention, the diameter of the sterile arc-shaped needle is 0.6 mm and the length is 25 mm. The diameter of the wire saw is 0.09 mm and the length is 40 mm.

[0010] Furthermore, in the present invention, the sterile arc-shaped needle includes an arc-shaped body, and the arc-shaped body has a needle head formed by a sharp part and a tail for connecting the wire saw.

[0011] Furthermore, in the present invention, when the tail of the sterile arc-shaped needle and the wire saw are detachably connected, a needle hole for connecting the wire saw is processed at the tail of the sterile arc-shaped needle. The wire saw is tied to the needle hole of the sterile arc-shaped needle.

[0012] Furthermore, in the present invention, the wire saw is a stainless steel rope body.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The present invention can perform puncture operations above and below the transverse carpal ligament under ultrasonic guidance, and use the wire saw to repeatedly pull and cut the transverse carpal ligament to achieve the purpose of completely loosening the transverse carpal ligament while avoiding damage to the tendon and nerve by the scalpel.

[0015] 2. The structure of the present invention is simple, the learning cost is low, and there is no need to purchase an expensive wrist arthroscope as an endoscope, which is beneficial to reducing the procurement cost and improving the promotion effect. Description of the Drawings

[0016] Figure 1 is a schematic structural diagram of the present invention.

[0017] Figure 2 is a schematic diagram of the use state of the present invention.

[0018] Figure 3 This is a schematic structural diagram of the sterile curved needle in the present invention.

[0019] Figure 4 is Figure 3 a sectional view of part A-A in

[0020] In the figure: 1. Sterile curved needle; 2. Wire saw.

[0021] 11. Flat needle; 12. Connecting part; 13. Curved part; 14. Limiting plate. Specific embodiments

[0022] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the orientation terms that may be involved in the following paragraphs, including but not limited to "upper, lower, left, right, front, back", etc., are based on the visual orientation shown in the corresponding drawings of the specification. It should not and should not be regarded as a limitation on the protection scope of the technical solution. Its purpose is only to facilitate those skilled in the art to better understand the technical solution described in the specification.

[0023] In the description of the following paragraphs, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and similar expressions should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific situation in combination with the common general knowledge, design specifications, standard documents, etc. in the art.

[0024] Embodiment 1

[0025] A minimally invasive surgical instrument for puncture and cutting, including a sterile curved needle 1 and a wire saw 2. The wire saw 2 is connected to the tail of the sterile curved needle 1 and forms an integral body with the sterile curved needle 1; the diameter of the sterile curved needle 1 is 0.4 mm to 0.6 mm, and the length is 13 mm to 25 mm; the diameter of the wire saw 2 is 0.07 mm to 0.09 mm, and the length of the wire saw 2 is 30 mm to 50 mm.

[0026] Embodiment 2

[0027] A minimally invasive surgical instrument for puncture and cutting, wherein the diameter of the sterile curved needle 1 is 0.4 mm and the length is 13 mm; the diameter of the wire saw 2 is 0.07 mm and the length is 30 mm. The structures and connection relationships of the remaining parts are the same as those described in any one of the foregoing embodiments. To avoid cumbersome writing, they will not be repeated here.

[0028] Example 3

[0029] A minimally invasive surgical instrument for puncture and cutting, wherein the sterile arc-shaped needle 1 has a diameter of 0.5 mm and a length of 18 mm; the wire saw 2 has a diameter of 0.08 mm and a length of 40 mm. The structures and connection relationships of the remaining parts are the same as those described in any one of the foregoing embodiments. To avoid cumbersome writing, they will not be elaborated here.

[0030] Example 4

[0031] A minimally invasive surgical instrument for puncture and cutting, wherein the sterile arc-shaped needle 1 has a diameter of 0.6 mm and a length of 25 mm; the wire saw 2 has a diameter of 0.09 mm and a length of 40 mm. The structures and connection relationships of the remaining parts are the same as those described in any one of the foregoing embodiments. To avoid cumbersome writing, they will not be elaborated here.

[0032] Example 5

[0033] A minimally invasive surgical instrument for puncture and cutting, wherein the sterile arc-shaped needle 1 includes an arc-shaped body, the arc-shaped body has a needle body formed by a sharp part and a tail for connecting the wire saw 2; a needle hole for connecting the wire saw 2 is processed at the tail of the sterile arc-shaped needle 1 so as to form a separable connection structure with the wire saw 2; the wire saw 2 is a stainless steel rope body. The structures and connection relationships of the remaining parts are the same as those described in any one of the foregoing embodiments. To avoid cumbersome writing, they will not be elaborated here.

[0034] Based on the above embodiments, the following paragraphs are used to continue the detailed description of the technical features involved and the functions and roles played by these technical features in the technical solution, so as to help those skilled in the art fully understand the technical solution and reproduce it.

[0035] When the present invention is in use, as Figure 2 shown, first, i). Locate the transverse carpal ligament through ultrasonic guidance; ii). Perform local anesthesia under ultrasonic guidance, and then inject normal saline above and below the transverse carpal ligament to separate the transverse carpal ligament from the surrounding tissues to protect the median nerve, and enter the sterile arc-shaped needle 1 from an incision on the palm side, and make it located below the transverse carpal ligament under ultrasonic guidance, and then penetrate through a second incision. iii). Insert the needle from the second incision and exit from the first incision, and ensure that the needle tip of the sterile arc-shaped needle 1 runs above the transverse carpal ligament under ultrasonic guidance. iv). At this time, the wire saw is repeatedly pulled to cut the transverse carpal ligament to avoid the situation that the tendon nerve is damaged by the scalpel and the transverse carpal ligament is not completely loosened.

[0036] The present invention can determine the instrument specifications according to the use site and population, solves the problem that in the existing operations, it is impossible to reduce the cost while ensuring a small surgical incision, is conducive to the operator's mastery, and has a simple structure and is convenient to use.

[0037] Meanwhile, in the present invention, there is provided a sterile arc-shaped needle 1 as Figures 3 to 4 shown. The sterile arc-shaped needle 1 is composed of a flat needle 11 and an arc portion 13. The flat needle 11 has a tip, and the tip is located at the lowest point formed after its bending. A connecting portion 12 is formed between the flat needle 11 and the arc portion 13. Both the connecting portion 12 and the flat needle 11 have the same radian as the arc portion 13, but the above structure does not exceed the limiting plate 14 inside the arc portion 13.

[0038] In the present invention, the cross-section of the arc portion 13 is a circular plate structure with an opening at the top, and a cavity for covering the wire saw 2 is formed inside it. A number of limiting plates 14 are distributed along the length direction of the arc portion 13. The limiting plates 14 are arc-shaped protrusions protruding from the inside of the arc portion 13, and they can be used for segmentally limiting the wire saw 2, thereby ensuring the connection stability of the wire saw 2 after being covered by the arc portion 13.

[0039] Finally, although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A minimally invasive surgical instrument for puncture and cutting, characterized in that: It includes a sterile arc-shaped needle (1) and a wire saw (2). The wire saw (2) is connected to the tail of the sterile arc-shaped needle (1) and integrated with the sterile arc-shaped needle (1). The wire saw (2) is repeatedly pulled to cut the transverse carpal ligament. The diameter of the sterile arc-shaped needle (1) is 0.4 mm to 0.6 mm, and the length is 13 mm to 25 mm. The diameter of the wire saw (2) is 0.07 mm to 0.09 mm, and the length of the wire saw (2) is 30 mm to 50 mm. The sterile arc-shaped needle (1) is composed of a flat needle (11) and an arc part (13). The flat needle (11) has a tip, and the tip is located at the lowest point formed after its bending. A connecting part (12) is formed between the flat needle (11) and the arc part (13). Both the connecting part (12) and the flat needle (11) have the same radian as the arc part (13). The cross-section of the arc part (13) is a circular plate structure with an opening at the top. A cavity for covering the wire saw (2) is formed inside it, and a number of limiting plates (14) are distributed along the length direction of the arc part (13). The limiting plates (14) are arc-shaped protrusions protruding from the inside of the arc part (13), which can be used for segmentally limiting the wire saw (2) to ensure the connection stability after the wire saw (2) is covered by the arc part (13).

2. The minimally invasive surgical instrument for puncture and cutting according to claim 1, wherein: The diameter of the sterile arc-shaped needle (1) is 0.4 mm, and the length is 13 mm. The diameter of the wire saw (2) is 0.07 mm, and the length is 30 mm.

3. The minimally invasive surgical instrument for puncture and cutting according to claim 1, wherein: The diameter of the sterile arc-shaped needle (1) is 0.5 mm, and the length is 18 mm. The diameter of the wire saw (2) is 0.08 mm, and the length is 40 mm.

4. The minimally invasive surgical instrument for puncture and cutting according to claim 1, characterized in that: The diameter of the sterile arc-shaped needle (1) is 0.6 mm, and the length is 25 mm. The diameter of the wire saw (2) is 0.09 mm, and the length is 40 mm.

5. The minimally invasive surgical instrument for puncture and cutting according to claim 1, characterized in that: The sterile arc-shaped needle (1) includes an arc-shaped body, and the arc-shaped body has a needle composed of a sharp part and a tail for connecting the wire saw (2).

6. The minimally invasive surgical instrument for puncture and cutting according to claim 5, wherein: When the tail of the sterile arc-shaped needle (1) and the wire saw (2) are detachably connected, a needle hole for connecting the wire saw (2) is machined at the tail of the sterile arc-shaped needle (1).

7. The minimally invasive surgical instrument for puncture and cutting according to any one of claims 1 to 6, characterized in that: The wire saw (2) is a stainless steel rope body.

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