Adjustable nerve repair material preparation device

Abstract

The utility model relates to a preparation tool of an implanted nerve repair material for clinical application, in particular to an adjustable nerve repair material preparation device, which comprises a rectangular handle, an arc groove is arranged in the middle of the rectangular handle, a folding blade is convenient to take and use, the folding blade is thin and sharp and convenient to cut, and the arc groove is provided with an opening. An adjusting block is arranged on the outer left side of the front end of the rectangular handle and connected with an internal telescopic part, the telescopic part is fixed to the rear end of the folding position of the blade, and two moving arms in the telescopic part are located at the front end of the rectangular handle and can move in an opening and closing mode so as to clamp nerve conduits with different diameters for cutting; the device is simple in structure and convenient to prepare and operate.

Description

Technical Field

[0001] The utility model relates to a preparation tool for an implanted nerve repair material for clinical application, in particular to an adjustable preparation device for the nerve repair material. Background Art

[0002] A nerve conduit is a medical device, usually a tubular object made of bioabsorbable or artificial materials. It is designed to be implanted in the nervous system to promote nerve regeneration and repair. The main function of a nerve conduit is to provide an orderly and effective scaffold for nerve regeneration and to reduce inflammatory responses and fibrosis during nerve regeneration.

[0003] Nerve catheters can be used to treat various neurological diseases or injuries, such as peripheral nerve injury, spinal cord injury, and brain injury. During the treatment process, the proximal and distal ends of the nerve are placed in the nerve catheter, and the epineurium of the two ends is fixed to the tube wall. Subsequently, the nerve axons can grow from the proximal end to the distal end along the lumen of the tube, thereby promoting nerve regeneration and repair.

[0004] An important feature of nerve conduits is that they can prevent the invasion of fibrous scar tissue, thereby avoiding the formation of neuromas. In addition, the biological environment in nerve conduits can also be artificially controlled and changed to make it more suitable for nerve regeneration.

[0005] The method of repairing damaged peripheral nerves through nerve conduits has been applied in clinical and scientific research. On this basis, a new type of nerve repair material - nerve wrap tube can be made by directional cutting of nerve conduits. This material has certain special properties to promote nerve regeneration and repair, which is of great significance for clinical medical research. However, nerve conduits are mostly 2-8mm in diameter and 2cm in height, which is very short and inconvenient to fix and cut. In addition, they are often cut by hand with a sharp double-sided thin blade of a razor, which is difficult to control the force, and often leads to problems of crooked cutting, and sometimes even the risk of finger injury.

[0006] Therefore, in order to better cut the nerve conduit, a cutting tool with good safety, stable fixation and easy operation is urgently needed. Utility Model Content

[0007] The utility model provides an adjustable preparation device for nerve repair materials, which solves the problems of poor force control, low cutting accuracy and easy injury caused by cutting nerve conduits with a blade in the prior art.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A preparation device for an adjustable nerve repair material comprises a handle in the shape of an elongated strip, and a groove is provided at one end of the handle, an adjusting rod is penetrated in the handle below the groove, a left-hand nut and a right-hand nut are sleeved at both ends of the adjusting rod, and two sliders are provided at both ends of the adjusting rod, movable arms are provided on the sliders respectively, and a blade that can rotate at the groove end is embedded in the handle.

[0010] Preferably, the adjusting rod is a rod-shaped structure, one end of which is located inside the handle, and the other end passes through the handle and extends outward. A limiting ring is provided in the middle of the adjusting rod, and sliders are fixed on the adjusting rods at both ends of the limiting ring. The two sliders are respectively fixed with a left-hand nut and a right-hand nut at one end farther than the limiting ring.

[0011] Preferably, one end of the two movable arms is hinged on the slider, and a hinge is provided in the middle of the movable arm, so that the movable arm can be bent, and a silicone patch is provided at the other end of the movable arm.

[0012] Preferably, the outer periphery of the handle is a handle body, in which a knife groove of equal length is provided, the blade is accommodated in the knife groove, and the blade is pin-fixed to one end of the handle close to the groove, and the blade can be rotated 180 degrees along the groove to be parallel to the handle.

[0013] Preferably, a fixed base is fixed at the groove of the handle, the fixed base matches with a limiting ring, and the limiting ring is movably mounted on the fixed base.

[0014] Preferably, the surface of the silicone patch has a texture, and the cross-section of the silicone patch is arc-shaped.

[0015] Preferably, a circular groove is provided on the handle body of the handle.

[0016] Preferably, the relative moving distance of the two moving arms is 0-10 mm.

[0017] Preferably, the blade is a blade with edges sharpened on both sides.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The double-edged blade is thin and sharp, which can smoothly cut the nerve catheter and reduce the generation of burrs on the nerve catheter; 2. The blade can be folded into the handle to reduce accidents and increase safety; 3. The external adjustment rod is easy to operate, and the distance of the moving arm can be adjusted at any time according to the diameter of the nerve catheter to be cut. It is flexible and can cut nerve catheters of common sizes on the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0021] Figure 2 The figure is a schematic top view of the overall structure of an embodiment of the utility model.

[0022] Figure 3 The utility model is a schematic diagram of the use process of an embodiment of the utility model.

[0023] Figure 4 for Figure 1 , Figure 2 , Figure 3 A partial enlarged view of part A in the middle.

[0024] Figure 5 for Figure 4 Schematic diagram of the front view of the fixed base structure.

[0025] In the figure: Part A - retractable part; 1 - handle; 1.1 - handle body; 1.2 - knife groove; 2 - blade; 3 - adjustment rod; 4 - silicone patch; 5 - moving arm; 6 - slider; 7 - left hand nut; 8 - right hand nut; 9 - fixed base; 10 - limit ring; 11 - circular groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] A nerve conduit is a medical device, usually a tubular object made of bioabsorbable or artificial materials. It is designed to be implanted in the nervous system to promote nerve regeneration and repair. The main function of a nerve conduit is to provide an orderly and effective scaffold for nerve regeneration and to reduce inflammatory responses and fibrosis during nerve regeneration.

[0028] Nerve catheters can be used to treat various neurological diseases or injuries, such as peripheral nerve injury, spinal cord injury, and brain injury. During the treatment process, the proximal and distal ends of the nerve are placed in the nerve catheter, and the epineurium of the two ends is fixed to the tube wall. Subsequently, the nerve axons can grow from the proximal end to the distal end along the lumen of the tube, thereby promoting nerve regeneration and repair.

[0029] An important feature of nerve conduits is that they can prevent the invasion of fibrous scar tissue, thereby avoiding the formation of neuromas. In addition, the biological environment in nerve conduits can also be artificially controlled and changed to make it more suitable for nerve regeneration.

[0030] The method of repairing damaged peripheral nerves through nerve conduits has been applied in clinical and scientific research. On this basis, a new type of nerve repair material - nerve wrap tube can be made by directional cutting of nerve conduits. This material has certain special properties to promote nerve regeneration and repair, which is of great significance for clinical medical research. However, nerve conduits are mostly 2-8mm in diameter and 2cm in height, which is very short and inconvenient to fix and cut. In addition, they are often cut by hand with a sharp double-sided thin blade of a razor, which is difficult to control the force, and often leads to problems of crooked cutting, and sometimes even the risk of finger injury.

[0031] Therefore, in order to better cut the nerve conduit, a cutting tool with good safety, stable fixation and easy operation is urgently needed. In order to solve the above problems, this embodiment 1 is provided.

[0032] Reference Figures 1 to 5 For this embodiment 1, refer to Figure 1 This is a schematic diagram of the overall structure of the embodiment 1, referring to Figure 2 This is a schematic top view of the overall structure of Example 1. Example 1 is a preparation device for an adjustable nerve repair material, including a handle in the shape of a long strip, and a groove is provided at one end of the handle. An adjusting rod is penetrated through the handle below the groove, and a left-hand nut and a right-hand nut are also sleeved on both ends of the adjusting rod. There are two sliders on both ends of the adjusting rod, and movable arms are respectively provided on the sliders. A blade that can rotate at the groove end is also embedded in the handle.

[0033] This nerve catheter cutting device fully considers the actual needs of the operator and improves the stability of the operation and the consistency of the effect. The long strip design of the handle makes it comfortable and stable during operation, and the groove at one end of the handle facilitates the positioning and fixing of the catheter. The adjustment rod runs through the inside of the handle, and the left-hand nut and right-hand nut at both ends make it easy to adjust the length of the rod to meet the cutting needs of catheters of different lengths. At the same time, the slider and moving arm design on the adjustment rod make it possible to flexibly adjust the position of the blade to ensure the accuracy and precision of the cutting. The blade is cleverly embedded in the handle and can be rotated at the groove end. This design not only ensures the stability and durability of the blade, but also makes it easy to control the rotation angle and force of the blade when cutting the catheter, ensuring smooth and precise cutting. This adjustable nerve catheter cutting device is not only reasonably designed, but also easy to operate. It is an ideal tool for nerve catheter cutting.

[0034] Reference Figure 4 for Figures 1 to 3Part A in the middle is a partial enlarged view of the retractable component. In this embodiment, the retractable component includes an adjustment rod 3, a silicone patch 4, a movable arm 5, two sliders 6, a left-hand nut 7, a right-hand nut 8 and a fixed base 9. The fixed base 9 of the retractable component is fixedly connected to the bottom of the rectangular handle 1; the fixed base 9 and the limit ring 10 are installed in cooperation with each other; the adjustment rod 3, the left-hand nut 7 and the right-hand nut 8 are connected as a whole through an axis, and the adjustment rod 3 is rotated to make the two sliders 6 move inward or outward at the same time. The silicone patch 4 has a texture to increase the friction against the wall, and has an arc to fit the surface of the nerve conduit, thereby fixing nerve conduits of different diameters and completing the cutting of nerve conduits of different sizes.

[0035] The adjusting rod is a rod-shaped structure, one end of which is located inside the handle, and the other end passes through the handle and extends outward. A limiting ring is provided in the middle of the adjusting rod, and sliders are fixed on the adjusting rods at both ends of the limiting ring. The ends of the two sliders farther from the limiting ring are respectively fixed with a left-hand nut and a right-hand nut.

[0036] The rod-shaped structure of the adjustment rod not only ensures its strength and stability, but also enables it to be flexibly applied in various application scenarios. One end is embedded in the handle to form a stable connection with the handle, and the other end passes through the handle and extends outward to form an adjustment end. The user can adjust the relative position between the two sliders by rotating the exposed adjustment rod, thereby achieving the fitting and fixation of nerve conduits of different sizes. This design not only ensures the stability of the adjustment rod, but also allows it to be extended and retracted as needed.

[0037] A limit ring is provided in the middle of the adjusting rod. The function of the limit ring is to limit the moving range of the slider, and the limit ring and the fixed base arranged at the handle groove are installed in cooperation with each other, so that the adjusting rod can rotate on the fixed base without falling off, thereby enabling the adjusting rod to have an adjustment function without losing its stability.

[0038] Slide blocks are fixedly mounted on the adjustment rods at both ends of the limit ring. The two slide blocks are important components of the adjustment rod. They are located on both sides of the limit ring. The slide blocks are provided with moving arms, which are important structures for fitting and fixing the nerve conduit. The slide blocks can slide relatively on the adjustment rod. The ends of the two slide blocks that are farther from the limit ring are respectively fixed with left-hand nuts and right-hand nuts. The two nuts are the final execution parts of the adjustment rod. By rotating them, the maximum relative distance of the slide blocks can be adjusted and limited, which makes it easier to make fine adjustments within the determined maximum relative distance and is easy to use. The design of the left-hand nut and the right-hand nut fully considers ergonomic factors, so that it can be easily operated with both hands during use, greatly improving work efficiency.

[0039] One end of the two moving arms is hinged on the slider, and a hinge is provided in the middle of the moving arm, so the moving arm can be bent, and a silicone patch is provided at the other end of the moving arm. The end hinged on the slider allows the moving arm to move forward and backward, left and right when needed, and the hinge in the middle allows the moving arm to bend in multiple directions to adapt to various complex working environments.

[0040] The silicone patch at the other end of the moving arm not only increases the contact area between the moving arm and the target object and improves stability, but the softness and anti-slip properties of the silicone material also ensure that the moving arm can fit firmly on the target object and maintain a stable connection even when moving or impacted by external forces.

[0041] The outer periphery of the handle is a handle body, in which a knife groove of equal length is arranged. The blade is accommodated in the knife groove, and the blade is pin-connected and fixed to one end of the handle close to the groove. The blade can be rotated 180 degrees along the groove to be parallel to the handle.

[0042] A fixed base is fixed at the groove of the handle, the fixed base matches with a limiting ring, and the limiting ring is movably mounted on the fixed base.

[0043] A spring is provided inside the fixed base, one end of which is connected to the fixed base, and the other end is connected to the limit ring. When the limit ring moves on the fixed base, the spring provides a certain resistance, so that the limit ring can be kept in a fixed position without external force. Such a design can help users control the rotation angle of the blade more conveniently, making the operation more stable and accurate.

[0044] In addition, in order to enhance the comfort and anti-slip properties of the handle, the handle is also provided with anti-slip texture and soft rubber cover. These designs can make users more comfortable when using it, and can also prevent users with sweaty hands from slipping during use, thus ensuring the safety and stability of use.

[0045] The surface of the silicone patch has textures, and the cross section of the silicone patch is arc-shaped.

[0046] The texture design of the silicone patch can increase the friction between it and the nerve conduit, making it fit more firmly to the nerve conduit and not easy to fall off.

[0047] Nerve catheters are generally in the shape of circular tubes, so the curved cross-section design of the silicone patch can better adapt to the outer circumference of the nerve catheter, making it fit the nerve catheter more closely, less likely to create gaps and thus easier to fix.

[0048] In addition, this silicone patch has good elasticity and durability and can be used repeatedly without being easily deformed or damaged.

[0049] The handle is also provided with a circular groove, which is arranged on the handle outside the blade groove. In this embodiment, the circular groove is arranged on the handle two-thirds of the way away from the groove. The circular groove is arranged to facilitate the user to take the folded blade.

[0050] The relative moving distance of the two moving arms is 0-10mm. According to the general size of the nerve cannula, the relative distance range of the slider where the moving arm is located is 0-10mm. However, the device of this embodiment can further expand or reduce the relative distance range by adjusting the left-hand nut and the right-hand nut, thereby improving adaptability.

[0051] The blade is a blade with edges on both sides. The user only needs to adjust the direction of the blade to perform reverse cutting without frequently changing the holding position or tool, which greatly reduces the error and inconvenience in operation. In addition, the blade with edges on both sides also enhances the flexibility and diversity of cutting. Whether it is straight cutting or curve cutting, the double-edged blade can easily cope with it, and the cutting effect is more accurate and smooth. At the same time, since there are edges on both sides of the blade, even if one side of the edge is worn after long-term use, the other side can still be used normally, extending the service life of the blade.

[0052] It is worth noting that this double-edged blade design also has certain safety considerations. Since there are cutting edges on both sides of the blade, users do not need to place their fingers on the side of the blade when using it, reducing the risk of injury. In addition, during use, users can also flexibly control the depth and accuracy of cutting by adjusting the grip position and strength, which improves the safety and stability of operation.

[0053] exist Figure 1 and Figure 2 On the basis of the embodiment 1, the main technical solutions such as shape, structure, position relationship, connection relationship, etc. in the embodiment 1 are further refined and verified according to the actual installation. The embodiment 2 is also an adjustable nerve repair material preparation device, including a handle, and the handle can hide a foldable blade; the blade is thin and sharp, and a retractable component is provided at the upper end of the folding part of the blade. The foldable blade is a sharp blade used for a razor, which is thin and sharp. There are left and right hand nuts connected together in the middle of the retractable component, and two sliders that can slide in both directions are provided above the left and right hand nuts. The two sliders are made of metal and are at the same horizontal height. Two moving arms are attached to the front end of the metal slider, and the front ends of the two moving arms are attached with textured and curved silicone patches, which can better fit the outer side of the arc catheter. The moving distance of the two moving arms is 0-10mm, and an adjustment rod is provided at the left end of the outer side of the retractable component. When rotating, the two moving arms can be moved inward or outward at the same time, and the lower end of the retractable component is a fixed base.

[0054] The method of use of the present embodiment 1 and the present embodiment 2 is as follows: the handle 1 is used for the staff to hold; the folding blade 2 is taken out from the middle hole of the handle 1, the handle 1 is held, and the folding blade 2 is placed above the nerve guide tube, and then the adjustment rod 3 is rotated according to the diameter of the nerve guide tube to move the movable arm 5 to a suitable position, so that the textured and curved silicone patch 4 fixes the nerve guide tube, and cuts downward to achieve the cutting operation. The device of the present embodiment has a simple structure, is easy to operate, saves time and effort when used, and has good safety.

[0055] The beneficial effects of Embodiment 1 and Embodiment 2 are as follows: 1. The blade of the razor is thin and sharp, and can smoothly cut the nerve conduit, reducing the generation of burrs on the nerve conduit; 2. The blade can be folded into the handle, reducing accidents and increasing safety; 3. The external adjustment rod is easy to operate, and the distance of the moving arm can be adjusted at any time according to the diameter of the nerve conduit to be cut. It is flexible and can cut nerve conduits of common sizes on the market.

[0056] The above are only preferred embodiments of the present invention and do not constitute any limitation to the present invention. Any simple modification, change and equivalent transformation made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A device for preparing an adjustable nerve repair material, characterized in that: It includes a handle which is in the shape of an elongated strip and has a groove at one end thereof, an adjusting rod is passed through the handle below the groove, a left-hand nut and a right-hand nut are sleeved on both ends of the adjusting rod, and two sliders are provided on both ends of the adjusting rod, movable arms are provided on the sliders respectively, and a blade which can rotate at the groove end is embedded in the handle.

2. The device for preparing an adjustable nerve repair material according to claim 1, characterized in that: The adjusting rod is a rod-shaped structure, one end of which is located inside the handle, and the other end passes through the handle and extends outward. A limiting ring is provided in the middle of the adjusting rod, and sliders are fixed on the adjusting rods at both ends of the limiting ring. The ends of the two sliders farther from the limiting ring are respectively fixed with a left-hand nut and a right-hand nut.

3. The device for preparing an adjustable nerve repair material according to claim 1, characterized in that: One end of the two moving arms is hinged on the slider, and a hinge is provided in the middle of the moving arm, so that the moving arm can be bent, and a silicone patch is provided at the other end of the moving arm.

4. The device for preparing an adjustable nerve repair material according to claim 2, characterized in that: The outer periphery of the handle is a handle body, in which a knife groove of equal length is arranged. The blade is accommodated in the knife groove, and the blade is pin-connected and fixed to one end of the handle close to the groove. The blade can be rotated 180 degrees along the groove to be parallel to the handle.

5. The device for preparing an adjustable nerve repair material according to claim 2, characterized in that: A fixed base is fixed at the groove of the handle, the fixed base matches with a limiting ring, and the limiting ring is movably mounted on the fixed base.

6. The device for preparing an adjustable nerve repair material according to claim 3, characterized in that: The surface of the silicone patch has textures, and the cross section of the silicone patch is arc-shaped.

7. The device for preparing an adjustable nerve repair material according to claim 4, characterized in that: A circular groove is also provided on the handle body of the handle.

8. The device for preparing an adjustable nerve repair material according to claim 3, characterized in that: The relative moving distance of the two moving arms is 0-10 mm.

9. The device for preparing an adjustable nerve repair material according to claim 1 or 4, characterized in that: The blade is a blade with edges on both sides.

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