Automatic muscle retractor for microscopic ulnar nerve release

Abstract

According to the automatic muscle drag hook for microscopic ulnar nerve release, the number of the supporting plates is two, mirror image distribution and mutual correspondence are achieved, a spring piece is fixedly connected between the right ends of the two supporting plates, the automatic muscle drag hook is used for opening muscle tissue around nerves and exposing ulnar nerves when the ulnar nerves are released under a book closing mirror, meanwhile, a safe space is created for incision of surrounding muscles, and the safety of the ulnar nerves is improved. The supporting part can be folded by pressing the supporting part during use, the supporting part can be opened outwards under the pushing of the spring piece and the supporting spring after the handle part is loosened, a user does not need to manually control the hook to open muscles, and the hook is convenient for the user to use.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to an automatic muscle retractor for under-mirror ulnar nerve release. Background Art

[0002] Cubital tunnel syndrome is caused by the compression of the ulnar nerve at the elbow, often secondary to chronic injury of the elbow. It is a clinical symptom group mainly manifested by progressive atrophy and weakness of the intrinsic muscles of the hand and numbness on the ulnar side of the hand. It is also known as tardy ulnar neuritis, traumatic ulnar neuritis, and ulnar nerve palsy. The in-situ release surgery of the ulnar nerve is to find the ulnar nerve fascia structure along the medial side of the elbow and release the pathological conditions. It is necessary to partially incise the flexor carpi ulnaris muscle and retract the muscle to provide an operating space. Currently, when retracting the incised muscle, an ordinary retractor is needed, and the retracting effect is poor, which is likely to affect the operation. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides an automatic muscle retractor for under-mirror ulnar nerve release, effectively solving the problems mentioned in the above background art.

[0004] The technical solution adopted by the utility model to solve the above problems is as follows:

[0005] An automatic muscle retractor for under-mirror ulnar nerve release includes a support plate. There are two support plates in total, which are mirror-image distributed and correspond to each other. A spring piece is fixedly connected between the right ends of the two support plates; the support plate includes a horizontally arranged support part and a handle part. The handle parts are respectively fixedly connected to the right ends of the support part and the handle parts are respectively inclined upward. The spring piece is fixedly connected to the right ends of the two handle parts; a support spring is arranged on the right side between the two support parts; key-shaped holes are respectively opened on the right side surfaces of the support parts, and a support rod is slidably fitted between the two key-shaped holes, and the support spring is sleeved on the surface of the support rod.

[0006] Preferably, the length of the key-shaped hole is greater than the diameter of the support rod.

[0007] Preferably, threaded parts are respectively opened on both sides of the surface of the support rod, and adjusting knobs are respectively threadedly connected to the threaded parts, and the adjusting knobs are respectively located outside the support part.

[0008] Preferably, the adjusting knob includes an annular block and side plates fixed on the corresponding two side surfaces of the annular block. A threaded groove for threaded connection with the threaded part is opened on the inner side of the annular block.

[0009] The structure of the utility model is novel, ingeniously conceived, simple and convenient to operate, and has the following advantages compared with the prior art:

[0010] This device is used to expand the muscle tissue around the ulnar nerve under the arthroscope to expose the ulnar nerve. At the same time, it creates a safe space for incising the surrounding muscles. When in use, the support part can be closed by pressing it, and after releasing the handle part, it can be opened outward under the push of the spring piece and the support spring, eliminating the need for the user to manually control the muscle retraction, which is convenient for the user. Description of the Drawings

[0011] Figure 1 Figure 1 is the first schematic diagram of the overall structure of an automatic muscle retractor for ulnar nerve release under arthroscope of the present utility model.

[0012] Figure 2 Figure 2 is the second schematic diagram of the overall structure of an automatic muscle retractor for ulnar nerve release under arthroscope of the present utility model.

[0013] Figure 3 Figure 3 is the third schematic diagram of the overall structure of an automatic muscle retractor for ulnar nerve release under arthroscope of the present utility model.

[0014] Reference numerals in the figures: 1 - support plate, 2 - spring piece, 3 - support rod, 4 - support spring, 5 - adjustment knob, 6 - key-shaped hole. Detailed Description of the Preferred Embodiments

[0015] The following are specific embodiments of the present utility model, and the technical solutions of the present utility model will be further described in conjunction with the drawings. However, the present utility model is not limited to these embodiments.

[0016] As Figures 1-3 shown, the present utility model provides an automatic muscle retractor for ulnar nerve release under arthroscope, which includes a support plate 1. There are two support plates 1 in total, which are mirror-symmetrically distributed and correspond to each other. A spring piece 2 is fixedly connected between the right ends of the two support plates 1. The spring piece 2 is used to drive the support plate 1 to reset by its own elastic force; the support plate 1 includes a horizontally arranged support part and a handle part. The support part expands outward under the elastic force of the spring piece 2 for pulling the muscle, and the handle part is used for the user to conveniently control the support part to swing inward, facilitating the placement of the support part between the incisions. The handle parts are respectively fixedly connected to the right ends of the support part and are respectively inclined upward, which is convenient for the user to hold and avoids affecting the arthroscopic operation when using this device. The spring piece 2 is fixedly connected to the right ends of the two handle parts; a support spring 4 is arranged on the right side between the two support parts; key-shaped holes 6 are respectively opened on the right side surfaces of the support parts, and a support rod 3 is slidably fitted between the two key-shaped holes 6. The support spring 4 is sleeved on the surface of the support rod 3. The support spring 4 improves the supporting force of the support part through its own elastic force, and cooperates with the support rod 3 to improve the stability of the support plate 1 during support.

[0017] The length of the key-shaped hole 6 is greater than the diameter of the support rod 3. When the support part is opened and merged, the support rod 3 can move inside the key-shaped hole 6 to meet the opening and closing of the support part.

[0018] The surface of the support rod 3 is provided with threaded parts on both sides, and the threaded parts are threadedly connected with adjustment knobs 5. The adjustment knobs 5 are located on the outside of the support parts. By rotating the adjustment knobs 5, the adjustment knobs 5 can be moved along the axial direction of the support rod 3 under the action of the threaded connection, so as to facilitate the adjustment of the distance between the support parts according to the size of the incision.

[0019] The adjusting knob 5 includes an annular block and side plates fixed on the corresponding two side surfaces of the annular block, which are used to facilitate the rotation of the adjusting knob 5. The inner side of the annular block is provided with a thread groove threadedly connected to the threaded part, which is used to facilitate the connection between the adjusting knob 5 and the support rod 3.

[0020] This device is used to stretch the muscle tissue around the ulnar nerve when releasing the ulnar nerve under a mirror, exposing the ulnar nerve and creating a safe space for cutting the surrounding muscles.

[0021] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An automatic muscle retractor for endoscopic ulnar nerve release, comprising a support plate (1), characterized in that: There are two support plates (1) in total and they are mirror-distributed and correspond to each other. A spring sheet (2) is fixedly connected between the right ends of the two support plates (1). The support plate (1) comprises a horizontally arranged support portion and a handle portion, the handle portion is fixedly connected to the right end of the support portion and is tilted upwards. The spring sheet (2) is fixedly connected to the right ends of the two handle portions. A support spring (4) is arranged on the right side between the two support portions. Key-shaped holes (6) are respectively opened on the right side of the surface of the support portion. A support rod (3) is slidably fitted between the two key-shaped holes (6). The support spring (4) is sleeved on the surface of the support rod (3).

2. The automatic muscle retractor for endoscopic ulnar nerve release according to claim 1, characterized in that: The length of the key-shaped hole (6) is greater than the diameter of the support rod (3).

3. The automatic muscle retractor for endoscopic ulnar nerve release according to claim 1, characterized in that: The support rod (3) has threaded portions on both sides of its surface, and the threaded portions are respectively threadedly connected with adjustment knobs (5), and the adjustment knobs (5) are respectively located on the outside of the support portion.

4. The automatic muscle retractor for endoscopic ulnar nerve release according to claim 3, characterized in that: The adjusting knob (5) comprises an annular block and side plates fixed to the corresponding two side surfaces of the annular block, and a thread groove threadably connected to the threaded portion is provided on the inner side of the annular block.

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