CN116898517B - Nerve repair fixing device - Google Patents
Nerve repair fixing device Download PDFInfo
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- CN116898517B CN116898517B CN202311153619.1A CN202311153619A CN116898517B CN 116898517 B CN116898517 B CN 116898517B CN 202311153619 A CN202311153619 A CN 202311153619A CN 116898517 B CN116898517 B CN 116898517B
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- 210000005036 nerve Anatomy 0.000 title claims abstract description 203
- 230000008439 repair process Effects 0.000 title claims abstract description 45
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- 238000002513 implantation Methods 0.000 abstract description 2
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- 210000001640 nerve ending Anatomy 0.000 description 9
- 230000000149 penetrating effect Effects 0.000 description 9
- 208000028389 Nerve injury Diseases 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 230000008764 nerve damage Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 208000010886 Peripheral nerve injury Diseases 0.000 description 3
- 210000000944 nerve tissue Anatomy 0.000 description 3
- 210000000578 peripheral nerve Anatomy 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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- 229910000861 Mg alloy Inorganic materials 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/1128—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis of nerves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B17/115—Staplers for performing anastomosis in a single operation
- A61B17/1155—Circular staplers comprising a plurality of staples
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/11—Surgical instruments, devices or methods, e.g. tourniquets for performing anastomosis; Buttons for anastomosis
- A61B2017/1132—End-to-end connections
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Neurology (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to the technical field of medical instruments, and discloses a nerve repair fixing device which is used for repairing nerve broken ends and reducing operation difficulty. The inner diameter of the nerve sleeve is matched with the outer diameter of the nerve breaking ends, and the two ends of the nerve sleeve are respectively sleeved on the outer sides of a pair of nerve breaking ends to assist the nerve breaking ends to grow and repair along the inner cavity of the nerve sleeve; both ends of the nerve sleeve are provided with fixing components, including a plurality of fixing needles and tightening wires; each fixing needle is provided with a needle head piece and a threading piece which are connected, and a plurality of needle head pieces are arranged towards the outer wall of the end part of the nerve sleeve and fixed in advance, so that the nerve sleeve is convenient to be threaded subsequently; the threading piece is provided with threading through holes, the tightening wire sequentially penetrates through the plurality of threading through holes, a doctor is operated to tighten, a plurality of fixing needles are enabled to be inserted into nerve breaking ends, damaged nerves are quickly repaired, firm mechanical connection is formed, implantation of multiple materials in the nerves in the repairing process is canceled, penetration of the suture to the nerve breaking ends is reduced, and damage caused by overlarge pulling force of the nerves is avoided.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a nerve repair fixing device.
Background
Peripheral nerve injury is a common clinical condition, mainly due to sensory, motor and nutritional disturbances in the areas innervated by the nerve, for various reasons. An appropriate repair method can be selected according to the peripheral nerve defect degree. When the defect distance of the peripheral nerve is shorter and is generally smaller than 5 mm, the peripheral nerve can be directly repaired by a surgical suturing mode, but for nerve injury with the defect distance being more than 4 times of the diameter of the damaged nerve or the defect length being more than 3 cm, the direct suturing can lead to larger tension at the suture line, so that the surgical effect is not ideal.
In the prior art, the generation of an artificial nerve conduit is a main means for treating peripheral nerve injury for nerve injury with larger defect distance. The artificial nerve conduit is processed by using a material with good biocompatibility according to a histological principle method, and a tubular structure of nerve bridging can be established at the peripheral nerve injury broken end, so that nerve axons can grow along the lumen in an oriented way. At present, for an artificial nerve conduit, a common operation method of a clinician also adopts a traditional fixing method of broken-end needle and line suture to sleeve the broken end of nerve injury with 1 to 2 needles of a port needle threading lead of the artificial nerve conduit. Although the method has high degree of nesting and is not easy to fall off, the method has high requirements for surgeons during operation, and the nerves are required to be sutured after being aligned correctly, if the needles and wires are stressed too much in the pulling process, more damage to the nerves is inevitably caused.
Disclosure of Invention
The invention aims to provide a nerve repair fixing device, by using which the operation of repairing damaged nerves becomes simpler and more convenient; the penetration of the suture to the broken ends of the nerve is reduced, the nerve is prevented from being damaged due to overlarge pulling force, and the pain of a patient is relieved to a certain extent.
To achieve the purpose, the invention adopts the following technical scheme:
a nerve repair fixation device for repairing a nerve end-break, comprising:
the inner diameter of the nerve sleeve is matched with the outer diameter of the nerve breaking end, and two ends of the nerve sleeve are respectively sleeved on the outer sides of two nerve breaking ends of the same nerve;
the nerve sleeve comprises a fixing assembly, a fixing assembly and a fixing assembly, wherein the fixing assembly is arranged at two ends of the nerve sleeve and comprises a plurality of fixing needles and tightening wires; the fixed needle comprises a needle head piece and a threading piece, and a plurality of needle head pieces are arranged towards the outer wall of the end part of the nerve sleeve; the needle head piece is connected with the threading piece, and the threading piece is provided with a threading through hole; the tightening wire sequentially penetrates through the plurality of threading through holes, and can be tightened to insert the plurality of fixing needles into the nerve break ends.
As a preferred technical scheme of the nerve repair fixing device, the threading member is provided with a stop portion, the stop portion is convexly arranged at one end of the threading member away from the needle head member, and the stop portion is configured to prevent the needle head member from being inserted into the nerve break end to a preset position and then to be continuously inserted into the fixing needle.
As the preferred technical scheme of the nerve repair fixing device, the threading piece is further provided with a penetrating part which is connected with the stopping part and the needle head piece, and the diameter of the penetrating part is smaller than that of the stopping part and the needle head piece which are connected with the penetrating part.
As the preferred technical scheme of nerve repair fixing device, the needle head piece comprises a needle head body, the needle head body is arranged into a cone, the tip end of the needle head body is far away from the threading piece, and the needle head body is inserted into the nerve sleeve.
As the preferred technical scheme of the nerve repair fixing device, the conical surface of the needle head body is provided with an anti-falling saw tooth part, and the anti-falling saw tooth part can prevent the needle head body from being separated from the nerve sleeve along the reverse direction of the insertion direction.
As the preferred technical scheme of nerve repair fixing device, the needle head piece is provided with a first anti-falling back-off, when the first anti-falling back-off is clamped with the nerve sleeve, the needle head piece does not penetrate through the nerve sleeve.
As a preferable technical scheme of the nerve repair fixing device, one end of the needle head part, which is close to the threading part, is provided with a step section which is configured to prevent the fixing needle from being separated from the nerve break end along the reverse direction of the insertion direction.
As the preferential technical scheme of the nerve repair fixing device, a plurality of fixing needles of the same fixing assembly are arranged along the circumferential direction of the nerve sleeve at preset intervals, and the axes of the threading through holes are all on the same plane.
As a preferred technical solution of the nerve repair fixing device, the fixing assembly comprises a loop, and the two wire ends of the tightening wire respectively pass through the loop relatively.
As the preferable technical scheme of the nerve repair fixing device, at least two tightening wires are arranged at any end of the nerve sleeve, and each tightening wire is correspondingly provided with one loop.
The invention has the beneficial effects that:
the invention provides a nerve repair fixing device which is used for repairing nerve broken ends and can effectively reduce the operation difficulty of doctors. The inner diameter of the nerve sleeve is matched with the outer diameter of the nerve breaking ends, two ends of the nerve sleeve are respectively sleeved on the outer sides of the two nerve breaking ends of the same nerve, and the nerve breaking ends are assisted to grow and repair along the inner cavity of the nerve sleeve. Both ends of the nerve sleeve are provided with fixing components, and the fixing components comprise a plurality of fixing needles and tightening wires; each fixing needle comprises a needle head part and a threading part which are connected with each other, and a plurality of needle head parts are arranged towards the outer wall of the end part of the nerve sleeve and fixed at the action position in advance, so that the nerve sleeve is convenient to be threaded in the follow-up process; the threading piece is provided with threading through holes, and the tightening wire is sequentially threaded through the plurality of threading through holes so as to wind the periphery of the nerve sleeve. The outer links up in nerve sleeve tip of a plurality of fixed needles, when nerve sleeve pipe locates the nerve broken end, and doctor manipulates the tightening wire and tightens up it, makes a plurality of fixed needles all insert to the nerve broken end towards nerve sleeve's inner chamber for nerve broken end and nerve sleeve's wireless fixed nest of overlapping can realize quick, convenient restoration damage nerve. The multiple fixing needles are inserted into the nerve repairing device to form firm mechanical connection, so that the nerve repairing effect is facilitated; the penetration of the suture to the broken ends of the nerves is reduced, the nerves are prevented from being damaged by pulling force, and the pain of the patient is relieved to a certain extent.
Drawings
FIG. 1 is a schematic view of a fixation needle of a nerve repair fixation device according to an embodiment of the present invention;
FIG. 2 is a partial schematic view of a nerve repair fixation device prior to tightening according to an embodiment of the present invention;
FIG. 3 is a schematic view of a portion of a nerve repair fixation device according to an embodiment of the present invention after tightening;
fig. 4 is a schematic diagram illustrating the operation of the nerve repair fixing device according to the embodiment of the present invention after tightening.
In the figure:
1. a nerve cuff;
2. fixing the needle; 21. a threading member; 211. a threading through hole; 212. a stopper; 213. a penetrating portion; 22. a needle member; 221. a needle body; 222. a step section; 223. the first anti-falling back-off buckle;
3. tightening the wire; 4. a ring buckle; 10. nerve endings.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1 to 4, the present invention discloses a nerve repair fixing device including a nerve sleeve 1 and a fixing assembly for repairing a nerve ending 10 and preventing the nerve ending 10 from penetrating a nerve with a suture. The inner diameter of the nerve sleeve 1 is matched with the outer diameter of the nerve breaking ends 10, and two ends of the nerve sleeve 1 are respectively sleeved on the outer sides of the two nerve breaking ends 10 of the same nerve to assist the nerve breaking ends 10 to grow and repair along the inner cavity of the nerve sleeve 1. Both ends of the nerve sleeve 1 are provided with fixing components, and the fixing components comprise a plurality of fixing needles 2 and tightening wires 3; the fixing needles 2 with special structures are designed, each fixing needle 2 comprises a needle head piece 22 and a threading piece 21 which are connected with each other, and a plurality of needle head pieces 22 are arranged towards the outer wall of the end part of the nerve sleeve 1 and fixed at the action position in advance, so that the nerve sleeve is convenient to be threaded in the follow-up process; meanwhile, the threading piece 21 is provided with threading through holes 211, and the tightening wire 3 sequentially penetrates through the plurality of threading through holes 211 so as to be wound on the periphery of the nerve sleeve 1.
In the clinical operation process, when the nerve to be repaired needs to be fixed, a plurality of fixing needles 2 are firstly connected to the end part of the nerve sleeve 1 externally, a plurality of threading through holes 211 are sequentially penetrated by the tightening wire 3, the fixing component is kept in an untruncated state, and two ends of the nerve sleeve 1 are respectively inserted into two nerve breaking ends 10 of the same nerve; at this time, the doctor manipulates the tightening wire 3 to tighten the same, so as to facilitate the plurality of fixing needles 2 to be inserted into the nerve ending 10 towards the inner cavity of the nerve sleeve 1, and the fixing needles are used for more simply sleeving the nerve ending 10 with the wireless fixing of the nerve sleeve 1, thereby realizing rapid and convenient repair of damaged nerves; can effectively reduce the operation difficulty of doctors. The multiple fixing needles 2 are inserted, so that firm mechanical connection is formed conveniently, and the effect of nerve repair is facilitated; the penetration of the suture to the nerve break end 10 is reduced, the nerve is prevented from being damaged by pulling force, and the pain of a patient is relieved to a certain extent.
Further, after the doctor manipulates the tightening wire 3 to tighten the tightening wire, the tightening wire 3 can be directly cut off and pulled away, materials which cannot be degraded in a human body are reduced to be left in the body, implantation of a plurality of undegradable materials in nerves in the repairing process is canceled, the effect of repairing the nerves is facilitated, and more unsafe hidden dangers are avoided. The suture or nylon thread commonly adopted at present in the suture process can not be degraded and absorbed by human body after being permanently implanted into the nerve, and the device is used for fixing the nerve end 10 and the nerve sleeve 1 to replace the traditional needle and thread suture mode, and simultaneously avoids the use of foreign substances or adhesives and the like and unsafe risks.
Specifically, a plurality of fixing needles 2 of the same fixing assembly are arranged along the circumferential direction of the nerve sleeve 1 at preset intervals, and the plurality of fixing needles 2 can be uniformly inserted into the nerve break end 10, so that the nerve injury repair is facilitated. The axes of the threading through holes 211 are all on the same plane, when the tightening wire 3 is tightened, the fixing needle 2 is only promoted to be inserted inwards to the nerve breaking end 10, the rotating force applied to the fixing needle 2 is avoided, the nerve is further protected from being additionally stirred by the fixing needle 2, and the nerve is prevented from being damaged secondarily.
Optionally, the same tightening wire 3 is threaded through the plurality of threading through holes 211 arranged at any end of the nerve sleeve 1, and a plurality of fixing needles 2 can be simultaneously inserted into the nerve break end 10 by operating only one tightening wire 3, so that the nerve break end 10 is fixed with the nerve sleeve 1; the two thread ends of the tightening thread 3 respectively pass through the two adjacent threading through holes 211 relatively, the two thread ends are crossed at one position, the two thread ends are respectively used as two stress ends, the pulling force is continuously applied along the direction of passing through the threading through holes 211, and the tightening thread 3 is pulled by two-way external force to promote the shrinkage and the insertion of the plurality of fixing needles 2.
As the preferable technical scheme, the fixing component comprises a ring buckle 4, two wire ends of the tightening wire 3 respectively and oppositely penetrate through the ring buckle 4, the ring buckle 4 is used for fixing the intersection points of the two wire ends into the ring buckle 4, the tightening wire 3 directly inserts the fixing needle 2 which is externally connected to the two ends of the nerve sleeve 1 into the nerve break end 10 through the nerve sleeve 1 by the action of pulling and closing the ring buckle 4 by bidirectional external force, a doctor can conveniently apply stable and uniform pulling force to the tightening wire 3, and the nerve break end 10 is quickly fixed in the nerve sleeve 1.
In this embodiment, the tightening threads 3 disposed at any end of the nerve sleeve 1 are at least two, each tightening thread 3 is correspondingly provided with a ring buckle 4, the ring buckles 4 are disposed at the intervals of two adjacent threading through holes 211, and on the periphery of the nerve sleeve 1, the tightening threads 3 are uniformly distributed, so that the fixing needles 2 are more uniformly stressed, the fixing needles 2 are prevented from being subjected to the friction force in the direction of the ring buckle 4 generated when the tightening threads 3 are tightened at the threading through holes 211, the fixing needles 2 are prevented from being subjected to additional deflection force, the tightening threads 3 are disposed to correspond to the ring buckles 4, the directions are simultaneously tightened, the influence of balanced pulling force on the fixing needles 2 except for shrinkage insertion is realized, the quick and synchronous insertion of the fixing needles 2 is realized, and the nerve repair effect is improved.
Specifically, the threading member 21 is provided with a stop portion 212, the stop portion 212 is convexly arranged at one end of the threading member 21 far away from the needle head member 22, the threading member 21 is hollow in a shape of a hammer, in the operation process, the structure is favorable for clinical visual observation of doctors and operation of a two-way external force pulling-in manipulation of the tightening wire 3, and the stop portion 212 is configured to prevent the needle head member 22 from being inserted into the nerve cut-off end 10 to a preset position and then to continuously insert the fixing needle 2, so that a great deal of penetration of nerve bundle layers caused by excessive insertion of the fixing needle 2 into the nerve cut-off end 10 is further prevented, and the nerve repair is prevented from being unfavorable.
In this embodiment, the preset position is preferably that when the needle member 22 is inserted into the nerve ending 10 by a distance, the nerve ending 10 is just stably connected with the nerve sleeve 1, the threading member 21 is further provided with a penetrating portion 213, the penetrating portion 213 is used for connecting the stopping portion 212 and the needle member 22, the diameter of the penetrating portion 213 is smaller than that of the stopping portion 212 and the needle member 22 connected with the penetrating portion 213, and when the stopping portion 212 contacts with the outer wall of the nerve sleeve 1, the needle member 22 is just inserted into the nerve ending 10 to the preset position when the fixing needle 2 is blocked from being further inserted into the nerve ending 10.
Illustratively, the needle member 22 includes a needle body 221, the needle body 221 being configured as a cone, the tip of the needle body 221 being disposed away from the threading member 21 for easier insertion engagement in the nerve cuff 1.
Further, the conical surface of the needle body 221 is provided with an anti-falling sawtooth portion, the anti-falling sawtooth portion can prevent the needle body 221 from being separated from the nerve sleeve 1 along the reverse direction of the insertion direction, the stability connection of the fixing needle 2 and the end part of the nerve sleeve 1 is facilitated, and the sawtooth-shaped structure can also assist in realizing the interpenetration of the fixing needle 2 under the action of external force.
Optionally, the needle head piece 22 is provided with a first anti-falling back-off 223, when the first anti-falling back-off 223 is clamped with the nerve sleeve 1, the needle head piece 22 is connected with the nerve sleeve 1 and does not penetrate through the nerve sleeve 1 to be exposed, so that stable connection of the fixed needle 2 and the nerve sleeve 1 can be ensured not to fall off, and the nerve sleeve 1 is not blocked by the needle head piece 22 when the nerve end 10 is sleeved, so that the sleeving step is simplified, and the operation of a doctor is more convenient, and the nerve end 10 is not damaged.
Further, the needle head piece 22 is further provided with a second anti-falling back-off, the second anti-falling back-off is configured to effectively prevent the fixing needle 2 from being separated from the nerve-breaking end 10 along the reverse direction of the insertion direction, and because the nerve has elasticity of recovering deformation, when the fixing needle 2 is inserted into the nerve-breaking end 10 to a preset position, the nerve tissue can wrap the second anti-falling back-off again, so that the second anti-falling back-off is buckled with the inside of the nerve tissue, the anti-falling and anti-shifting effects are achieved, the fixing needle 2 is prevented from sliding down in the process of continuously repairing and growing the nerve-breaking end 10, the nerve sleeve 1 and the nerve-breaking end 10 are not firmly connected, a tubular structure of nerve bridging cannot be established for the nerve-breaking end 10 any more, and the nerve repairing effect is affected. In this embodiment, the end of the needle member 22 near the threading member 21 is provided with a stepped section 222, and since the nerve still has elasticity for contraction and recovery deformation, when the needle member 22 is inserted to a predetermined position, the elastic contact between the stepped section 222 and the nerve tissue has a function of blocking the backward slip of the fixing needle 2 in the insertion direction.
The fixing needle 2 is made of degradable metal material, preferably magnesium alloy, which has high specific strength and high specific rigidity, can effectively relieve stress shielding effect (stress shielding effect refers to biological effects such as strength reduction and healing delay caused by mechanical shunt of the fixing material on bones), has strong fixing firmness, can be gradually degraded and absorbed along with the repair self-healing degree of nerves when implanted into a human body, and is safe, nontoxic and good in biocompatibility. And magnesium is one of the cations with the greatest content in human cells, participates in the synthesis of protein, activates various enzymes in the body, can regulate the activities of neuromuscular and nervous system, and is beneficial to the regeneration of nerves.
Based on the above, the present invention also provides an operation method using the nerve repair fixing device, firstly, fixing components are respectively installed at two ends of the nerve sleeve 1, and a plurality of fixing needles 2 are externally connected to two ends of the nerve sleeve 1; then two nerve breaking ends 10 of the same nerve are respectively inserted into two ends of the nerve sleeve 1; at the moment, the tightening wire 3 at one end of the nerve sleeve 1 is operated to tighten the nerve sleeve 1, so that the plurality of fixing needles 2 are all contracted and inserted into the nerve breaking end 10 towards the inner cavity of the nerve sleeve 1; repeating the above steps, and tightening the other end of the nerve cuff 1 to tighten the wire 3; finally, all the tightening wires 3 are cut off and rapidly pulled away, and the fixation and repair of the nerve are completed. The operation method of the nerve repair fixing device can reduce the time and complications of nerve injury repair to the greatest extent in actual clinic, reduce the influence of subjective and objective factors on the technology of doctors, and improve the success rate of operation.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. Nerve repair fixation device for repairing a nerve stump (10), comprising:
the nerve sleeve (1), the inner diameter of the nerve sleeve (1) is matched with the outer diameter of the nerve breaking end (10), and two ends of the nerve sleeve (1) are respectively sleeved on the outer sides of two nerve breaking ends (10) of the same nerve;
the nerve sleeve comprises a fixing assembly, wherein the fixing assembly is arranged at two ends of the nerve sleeve (1) and comprises a plurality of fixing needles (2) and tightening wires (3); the fixing needle (2) comprises a needle head piece (22) and threading pieces (21), and a plurality of the needle head pieces (22) are arranged towards the outer wall of the end part of the nerve sleeve (1); the needle head piece (22) is connected with the threading piece (21), and the threading piece (21) is provided with a threading through hole (211); the tightening wires (3) of the same fixing assembly sequentially penetrate through a plurality of threading through holes (211) of the same fixing assembly, the tightening wires (3) of the same fixing assembly can be tightened so as to insert a plurality of fixing needles (2) of the same fixing assembly into the nerve break end (10).
2. The nerve repair fixation device according to claim 1, wherein the threading member (21) is provided with a stop portion (212), the stop portion (212) being protruding from an end of the threading member (21) remote from the needle member (22), the stop portion (212) being configured to block the needle member (22) from being inserted into the nerve break end (10) to a predetermined position and to continue the insertion of the fixation needle (2).
3. The nerve repair fixation device according to claim 2, wherein the threading member (21) is further provided with a penetration portion (213) connecting the stopper portion (212) and the needle member (22), the penetration portion (213) having a smaller diameter than the stopper portion (212) and the needle member (22) connected thereto.
4. The nerve repair fixation device according to claim 1, wherein the needle member (22) comprises a needle body (221), the needle body (221) is provided as a cone, the tip of the needle body (221) is provided away from the threading member (21), and the needle body (221) is inserted into the nerve sleeve (1).
5. The nerve repair fixation device according to claim 4, wherein the conical surface of the needle body (221) is provided with anti-slip serrations which prevent the needle body (221) from being pulled out of the nerve sleeve (1) in the reverse direction of the insertion direction.
6. The nerve repair fixation device according to claim 1, wherein the needle member (22) is provided with a first anti-slip back-off (223), and the needle member (22) does not penetrate the nerve sleeve (1) when the first anti-slip back-off (223) is clamped with the nerve sleeve (1).
7. The nerve repair fixation device according to claim 1, wherein an end of the needle member (22) adjacent to the threading member (21) is provided with a stepped section (222), the stepped section (222) being configured to prevent the fixation needle (2) from being detached from the nerve break end (10) in a direction opposite to the insertion direction.
8. The nerve repair fixation device according to claim 1, wherein a plurality of the fixation needles (2) of the same fixation assembly are arranged at a predetermined distance from each other along the circumferential direction of the nerve sleeve (1), and the axes of the threading through holes (211) of the same fixation assembly are all on the same plane.
9. The nerve repair fixation device according to claim 1, characterized in that the fixation assembly comprises a loop (4), the two wire ends of the tightening wire (3) passing through the loop (4) respectively opposite each other.
10. The nerve repair fixation device according to claim 9, wherein at least two tightening wires (3) are provided at either end of the nerve cuff (1), one of the loops (4) being provided for each tightening wire (3).
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| CN117420012B (en) * | 2023-12-19 | 2024-03-15 | 泓欣科创生物科技(北京)有限公司 | Nerve sleeve tensile test tool and nerve sleeve tensile test method |
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| SE9604132D0 (en) * | 1996-11-13 | 1996-11-13 | Ying Lai Huang | A removable device for the nerve coaptation |
| US6749616B1 (en) * | 2001-11-21 | 2004-06-15 | Baylor College Of Medicine | Surgical system for repairing and grafting severed nerves and methods of repairing and grafting severed nerves |
| WO2011091169A1 (en) * | 2010-01-20 | 2011-07-28 | University Of Rochester | Nerve and blood vessel repair systems |
| CN108289681A (en) * | 2015-10-29 | 2018-07-17 | 阿克松根股份公司 | Implanted device with preset pulley system |
| CN111436988A (en) * | 2020-05-11 | 2020-07-24 | 上海市第六人民医院 | Auxiliary device for suturing neurovascular |
| CN213489064U (en) * | 2020-07-15 | 2021-06-22 | 河南理工大学 | Tissue engineering induction bracket for peripheral nerve repair |
| CN114668439A (en) * | 2022-03-17 | 2022-06-28 | 庞晓阳 | Peripheral nerve anastomosis device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113520498A (en) * | 2015-02-10 | 2021-10-22 | 丽多斯医疗有限公司 | Device for communicably coupling a first organ body and a second organ body |
| EP3509480A4 (en) * | 2016-09-06 | 2020-04-15 | Axion Biosystems, Inc. | Devices and methods for repairing damage to a nerve |
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| US4863668A (en) * | 1988-09-22 | 1989-09-05 | University Of Utah | Method of forming fibrin-collagen nerve and body tissue repair material |
| SE9604132D0 (en) * | 1996-11-13 | 1996-11-13 | Ying Lai Huang | A removable device for the nerve coaptation |
| US6749616B1 (en) * | 2001-11-21 | 2004-06-15 | Baylor College Of Medicine | Surgical system for repairing and grafting severed nerves and methods of repairing and grafting severed nerves |
| WO2011091169A1 (en) * | 2010-01-20 | 2011-07-28 | University Of Rochester | Nerve and blood vessel repair systems |
| CN108289681A (en) * | 2015-10-29 | 2018-07-17 | 阿克松根股份公司 | Implanted device with preset pulley system |
| CN111436988A (en) * | 2020-05-11 | 2020-07-24 | 上海市第六人民医院 | Auxiliary device for suturing neurovascular |
| CN213489064U (en) * | 2020-07-15 | 2021-06-22 | 河南理工大学 | Tissue engineering induction bracket for peripheral nerve repair |
| CN114668439A (en) * | 2022-03-17 | 2022-06-28 | 庞晓阳 | Peripheral nerve anastomosis device |
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| CN116898517A (en) | 2023-10-20 |
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