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Nerve or blood vessel protection sheath tube and application thereof

A sheath and nerve technology, applied in the field of nerve or blood vessel protection sheath, can solve the problems of low operation efficiency, many influencing factors, and poor nerve/vascular self-repair ability, so as to reduce the operation of adjusting the sheath and improve the operation efficiency. Effect

Pending Publication Date: 2022-05-27
上海水缘居生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nerve or blood vessel injury repair, especially when the nerve / vessel needs to be sutured, due to the poor self-repair ability of the nerve / vessel, there are many influencing factors. If the nerve or blood vessel fracture is not healed in time, the connective tissue around the wound will grow separately It will destroy the microenvironment of nerve or blood vessel repair, resulting in the formation of tumorous tissue or adhesion with other tissues at the site of nerve or blood vessel rupture, resulting in irreversible functional impairment
[0003] In order to maintain a relatively stable repair environment at the suture of the nerve / vascular section and avoid adhesion with the surrounding connective tissue, a sheath tube of a certain length is usually used to wrap the suture of the nerve / vascular section to prevent adhesion between the surrounding tissue and the suture. Some specific methods are that during the operation, the closed sheath is cut along the center line, and the cut sheath is wrapped around the suture. In actual use, the cut sheath cannot be completely reclosed. It is necessary for the doctor to close the cut part repeatedly so that the sheath can completely wrap the nerve or blood vessel, but it is often impossible to achieve complete closure. If the closure cannot be achieved, two cut sheaths need to be nested to achieve suturing The complete package at , see the specific usage status figure 1
[0004] During the operation of the existing sheath, it needs to be used after incision, and the incision needs to be repeatedly aligned, and it cannot be completely closed. On the one hand, the operation efficiency is low, and on the other hand, more sheath insertion is required. If the sheath is used, the price of a single sheath is more expensive. When using two sheaths, the material cost of the sheath will be doubled, which will also reduce the efficiency of the operation.

Method used

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  • Nerve or blood vessel protection sheath tube and application thereof
  • Nerve or blood vessel protection sheath tube and application thereof
  • Nerve or blood vessel protection sheath tube and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment discloses a nerve or blood vessel protective sheath, see figure 2 , the material of the sheath tube 4 is made of biodegradable material, the sheath tube 4 is provided with an opening 41, and the tube walls at the opening 41 are superimposed and arranged. After the sheath tube 4 is unfolded, there is no external force. The lower self-winding is restored to the state where the tube wall is superimposed. Specifically, the self-rolling recovery to the superimposed state of the pipe wall refers to the complete recovery to the initial superimposed state or a near recovery to the initial superimposed state, see Figure 4 , the opening 41 can be parallel to the centerline of the sheath tube 4, see Figure 5 , the opening 41 can also be non-parallel to the centerline of the sheath tube 4. When the opening 41 is not set parallel to the centerline of the sheath tube 4, the two ends of the opening 41 have pointed heads, which is convenient for the doctor to find t...

Embodiment 2

[0036] On the basis of Embodiment 1, as a preferred embodiment, the overlapping ratio of the tube wall is 10%-30%. For example, when the overlapping ratio is 10%, the sheath tube uses less material, and the cost is compared with the existing The situation of using two sheath tubes has advantages; the inner diameter of the sheath tube is 1mm-10mm, and this inner diameter range can adapt to most nerves or blood vessels, and the inner diameter of the sheath tube is preferably 1mm-3mm; in the actual operation process In the case of sutures on the cross-section of nerves or blood vessels, as well as the surface wounds or sutures of nerves or blood vessels, sheaths need to be wrapped for protection. Usually, the length of the sheath is 1cm-5cm. Preferably 1cm-2cm, the wall thickness of the sheath is 0.5mm-1.5mm, and the specific dimensions of the sheath are shown in Table 1.

[0037] Table 1 Dimensions of the sheath

[0038] serial number Overlap ratio % Inner diamete...

Embodiment 3

[0040] On the basis of Embodiment 1 or Embodiment 2, the sheath material is a biodegradable material, and the biodegradable material is a kind of biodegradable material that is absorbed by the body under the action of body fluids and its acid and nucleic acid. Or excreted, the final implanted material is completely replaced by new tissue natural or synthetic biomedical material, the biodegradable material is one of collagen, bacterial cellulose, polyglycolic acid, chitosan or Combination, in order to make the sheath tube have a certain elasticity and stiffness, a combination of biodegradable materials with different strengths will be used for preparation, such as the combination of bacterial cellulose with a higher Young's modulus and polyglycolic acid with a weaker strength to prepare the sheath. The preparation method of the tube and the sheath tube specifically includes the following steps.

[0041] The first step is to prepare the sheath tube sheet 5. The sheet 5 has certa...

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Abstract

The invention aims to disclose a nerve or blood vessel protection sheath tube and application thereof, and develops a protection sheath tube capable of completely wrapping a suture position of a nerve or a blood vessel, the sheath tube is made of a biodegradable material, the sheath tube is provided with an opening, and the tube wall at the opening is arranged in a superposed manner. The invention has the beneficial effects that the sheathing canal is made of a biodegradable material, the sheathing canal is automatically degraded after an operation is finished for a period of time, no influence is caused to a patient, and the sheathing canal does not need to be taken out after the operation again; the sheathing canal is provided with the opening, a doctor can directly use the sheathing canal after taking the sheathing canal and unfolding the sheathing canal without cutting off the sheathing canal, meanwhile, the canal walls at the opening are arranged in an overlapped mode, namely, the canal walls at the opening are mutually staggered, and the staggered design enables the sheathing canal to still recover to a staggered state after the sheathing canal is unfolded and used. 100% wrapping of the section suture position of the nerve or the blood vessel is achieved, the operation that a doctor adjusts the sheathing canal through a surgical instrument is reduced, and the surgical efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of biomedical materials, in particular to a nerve or blood vessel protective sheath and use thereof. Background technique [0002] Injury repair of nerves or blood vessels, especially when nerves / vessels need to be sutured, due to the poor self-repair ability of nerves / vessels, there are many influencing factors. It will destroy the microenvironment of nerve or blood vessel repair, resulting in the formation of tumor-like tissue or adhesion with other tissues at the location of nerve or blood vessel fracture, resulting in irreversible functional disorders. [0003] In order to maintain a relatively stable repair environment at the suture of the nerve / vascular section and avoid adhesion with the surrounding connective tissue, a certain length of sheath is usually used to wrap the suture of the nerve / vascular section to prevent the surrounding tissue from adhering to the suture. Some specific methods are that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/04
CPCA61F2/04
Inventor 郎欢乐李世亭
Owner 上海水缘居生物科技有限公司