Nerve socketed pipe

Abstract

The utility model discloses a nerve socketed pipe, which belongs to the technical field of medical instruments and comprises a socketed pipe body, two ends of the socketed pipe body are open, and a gradually-shrinking area, a straight area and a gradually-expanding area are sequentially arranged in the socketed pipe body. The nerve socketed pipe provided by the utility model is provided with the gradually-shrinking area, the straight area and the gradually-expanding area, the gradually-shrinking area and the gradually-expanding area are used as the guiding areas at the two ends of the nerve socketed pipe, and the straight area is used as the nerve recovery anastomosis area, so that in the nerve growth process, the nerve can be prevented from growing around in a divergent manner to form neuroma, and the influence on a patient is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and in particular relates to a nerve cannula. Background Art

[0002] In daily life, nerve damage caused by various reasons occurs all the time. Open peripheral nerve damage and some closed nerve damage require nerve repair. Nerve cells have weak regeneration ability and cannot repair themselves by dividing and proliferating after injury. Therefore, anastomosis of the broken ends of nerve axons is an effective method for repair.

[0003] In terms of accelerating the anastomosis of the broken ends and promoting the growth of nerve cells, the nerve sheath not only creates a microenvironment rich in various neurotrophic factors, preventing the growth of peripheral connective tissue and the formation of neuromas, but also ensures that the axons at the broken ends are not compressed.

[0004] The nerve sleeve in the prior art is cylindrical in shape, and the inner wall of the cylindrical sleeve provides mechanical conduction stress for the growth of the residual nerve. During the regeneration of nerve fibers, since the cylindrical sleeve has no guiding function, it often grows divergently to the surroundings to form a neuroma, which can easily cause adverse effects on patients. Utility Model Content

[0005] In order to solve the above problems, the technical solution adopted by the utility model is:

[0006] A nerve sleeve tube comprises a sleeve tube body. Both ends of the sleeve tube body are open. A gradually contracting area, a straight area and a gradually expanding area are sequentially arranged in the sleeve tube body.

[0007] Furthermore, the tapered area, the straight area and the gradually expanding area of ​​the sleeve body are coaxially arranged.

[0008] Furthermore, a membrane capsule is provided on the inner wall of the sleeve tube body located in the gradually contracting area and the gradually expanding area. The membrane capsule is arranged in an annular shape, one side of the membrane capsule is connected to the inner wall of the sleeve tube body, and the other side is an expansion part. The membrane capsule is provided with an inflation port connected to the interior thereof, so that gas can be filled into the membrane capsule to expand it.

[0009] Furthermore, the membrane sac located in the gradually contracting area is connected to the membrane sac located in the gradually expanding area through a plurality of air guide tubes, and the plurality of air guide tubes are located in the tube wall of the sleeve tube body.

[0010] Furthermore, the plurality of air guide tubes are evenly arranged along the circumference of the sleeve tube body.

[0011] Furthermore, the membrane capsule is made of latex or silicone material.

[0012] Furthermore, the sleeve body is circumferentially provided with a plurality of observation ports.

[0013] Beneficial effects of the utility model:

[0014] The nerve sleeve tube provided by the utility model is provided with a tapered area, a straight area and a gradually expanding area, wherein the tapered area and the gradually expanding area serve as guide areas at both ends of the nerve sleeve tube, and the straight area serves as a nerve recovery anastomosis area, so that during the process of nerve growth, the nerve can be prevented from diverging and growing around to form a neuroma, without affecting the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the overall structure of the nerve cannula provided by the utility model;

[0016] Among them, 1. sleeve tube body; 2. peeling guide groove; 3. first membrane sac; 4. first nerve stump; 5. gradually expanding area; 6. straight area; 7. gradually contracting area; 8. second nerve stump; 9. inflation tube; 10. second membrane sac; 11. observation port; 12. airway tube. DETAILED DESCRIPTION

[0017] The utility model provides a nerve sleeve tube. The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings to make it easier to understand and grasp.

[0018] Example 1

[0019] refer to Figure 1 A nerve sleeve tube comprises a sleeve tube body 1, both ends of the sleeve tube body 1 are open, and a tapered area 7, a straight area 6 and a gradually expanding area 5 are sequentially arranged in the sleeve tube body 1.

[0020] In this embodiment, the tapered area 7, the straight area 6 and the gradually expanding area 5 of the sleeve body 1 are coaxially arranged.

[0021] Specifically, the tapered zone 7 and the gradually expanding zone 5 are conical, and the straight zone 6 is cylindrical, wherein the tapered small-diameter ends of the tapered zone 7 and the gradually expanding zone 5 are connected to the cylindrical straight zone 6 .

[0022] In this embodiment, the sleeve body 1 is preferably made of a transparent material; according to actual use, a plurality of micropores may be provided on the tube wall of the sleeve body 1, and the diameter of the micropores is 0.5 micrometers to 2 micrometers.

[0023] When in use, the first nerve stump 4 and the second nerve stump 8 are placed in the tapered area 7 and the gradually expanding area 5 respectively. The tapered area 7 and the gradually expanding area 5 serve as guiding areas for the two ends of the nerve sleeve, and the straight area serves as the nerve recovery anastomosis area, which can guide the growth direction of the nerve and form nerve docking in the straight area, thereby limiting the formation of neuromas during nerve growth.

[0024] Example 2

[0025] In order to improve the adaptability of the nerve cuff and increase the convenience of manipulating the nerve cuff, this embodiment is further configured on the basis of the first embodiment.

[0026] In this embodiment, membrane capsules are provided on the inner walls of the sleeve body 1 located in the tapered area 7 and the expanded area 5. The membrane capsules are arranged in an annular shape, one side of the membrane capsule is connected to the inner wall of the sleeve body 1, and the other side is an expansion part. The membrane capsule is provided with an inflation port connected to the interior thereof, so that gas can be filled into the membrane capsule to expand it.

[0027] Specifically, the membrane capsule located in the gradually expanding area 5 is set as the first membrane capsule 3, and the membrane capsule located in the gradually contracting area 7 is set as the second membrane capsule 10. The first membrane capsule 3 and the second membrane capsule 10 are preferably made of latex or silicone material with better elasticity and lighter weight.

[0028] In order to ensure the synchronization of the first membrane capsule 3 and the second membrane capsule 10 , the first membrane capsule 3 and the second membrane capsule 10 are connected through three air guide tubes 12 . The three air guide tubes 12 are located in the tube wall of the sleeve tube body 1 and are evenly arranged along the circumference of the sleeve tube body 1 .

[0029] In order to facilitate inflation of the first membrane balloon 3 and the second membrane balloon 10, an inflation port connected to the interior of the first membrane balloon 3 is provided on one side of the first membrane balloon 3, and the inflation port is detachably connected to an inflation tube 9. At the same time, a micro one-way valve is provided at the inflation port. During the operation, the first membrane balloon 3 and the second membrane balloon 10 are in contact with the outer wall of the nerve but do not compress it.

[0030] When in use, the second nerve stump 8 is placed in the second membrane capsule 10 in the tapered zone 7, and the first nerve stump 4 is placed in the first membrane capsule 3 in the tapered zone 5. The first membrane capsule 3 and the second membrane capsule 10 are inflated until the first membrane capsule 3 and the second membrane capsule 10 are in contact with the outer wall of the nerve but not compressed.

[0031] Example 3

[0032] In order to facilitate accurate observation of the positions of the first nerve stump 4 and the second nerve stump 8 placed in the nerve cuff during surgery, this embodiment is further configured on the basis of the second embodiment.

[0033] In this embodiment, a plurality of observation ports 11 are circumferentially arranged on the sleeve body.

[0034] In order to facilitate observation of the actual positions of the first nerve stump 4 and the second nerve stump 8 placed into the sleeve body 1 without affecting visual deviation, the observation port is preferably arranged in a V-shape.

[0035] In order to facilitate the separation between the nerve sheath tube and the outer wall of the nerve after nerve repair, a stripping guide groove 2 is provided at one end of the nerve sheath tube.

[0036] The above fully describes the technical solution of the present invention. It should be noted that the specific implementation of the present invention is not limited to the above description. All technical solutions formed by ordinary technicians in the field using equivalent or equivalent transformations in structure, method or function based on the spirit of the present invention fall within the protection scope of the present invention.

Claims

1. A nerve sleeve, characterized in that: It comprises a sleeve pipe body, both ends of which are open, and a gradually contracting area, a straight area and a gradually expanding area are sequentially arranged in the sleeve pipe body; The tapered area, the straight area and the gradually expanded area of ​​the sleeve body are coaxially arranged; The tapered area and the gradually expanding area are conical, and the straight area is cylindrical, wherein the tapered small-diameter ends of the tapered area and the gradually expanding area are connected to the cylindrical straight area.

2. The nerve cuff according to claim 1, characterized in that: The inner walls of the sleeve body located in the gradually contracting area and the gradually expanding area are both provided with membrane capsules, the membrane capsules are arranged in an annular shape, one side of the membrane capsules is connected to the inner wall of the sleeve body, and the other side is an expansion part, and the membrane capsules are provided with an inflation port connected to the interior thereof, so as to fill the membrane capsules with gas to expand them.

3. The nerve cuff according to claim 2, characterized in that: The membrane sac located in the gradually contracting area is communicated with the membrane sac located in the gradually expanding area through a plurality of air guide tubes, and the plurality of air guide tubes are located in the tube wall of the sleeve tube body.

4. The nerve cuff according to claim 3, characterized in that: The plurality of air guide tubes are evenly arranged along the circumference of the sleeve tube body.

5. The nerve cuff according to claim 4, characterized in that: The membrane capsule is made of latex or silica gel material.

6. The nerve cuff according to claim 1, characterized in that: The sleeve body is provided with a plurality of observation ports in the circumferential direction.

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