阅读说明：本技术 一种用于视神经损伤模型的视神经夹具 (A optic nerve anchor clamps for optic nerve damage model ) 是由 王欢 陈辉 于 2020-05-20 设计创作，主要内容包括：该发明公开了一种用于视神经损伤模型的视神经夹具,属于夹持装置领域。该夹具包括：两片结构完全对称的长条形刚性夹片,每片夹片包括：根部、中部、尖部；两片夹片的根部焊接在一起,中部为施力区,施力使夹具夹紧,不受力时尖部为分开状态,尖部末端弯折,其特征在于两片夹片的中部沿施力夹紧时夹片的形变方向对应开设有三个孔；每个孔内设置有螺杆和螺帽,螺杆和螺帽进行螺纹连接时,螺杆的头部和螺帽位于两片夹片的外侧,通过螺帽的在螺杆上的旋进来使夹具,夹住视神经。具有夹持稳定、可靠性高、可对视神经进行定量损伤、方便使用者操作的优点。(The invention discloses an optic nerve clamp for an optic nerve injury model, and belongs to the field of clamping devices. This anchor clamps include: two strip-shaped rigid clamping pieces with completely symmetrical structures, wherein each clamping piece comprises: root, middle, tip; the clamping device is characterized in that the middle parts of the two clamping pieces are correspondingly provided with three holes along the deformation direction of the clamping pieces when the clamping pieces are clamped by applying force; and a screw and a nut are arranged in each hole, when the screw and the nut are in threaded connection, the head of the screw and the nut are positioned at the outer sides of the two clamping pieces, and the screw on the screw of the nut is screwed in to enable the clamp to clamp the optic nerve. Has the advantages of stable clamping, high reliability, quantitative damage to optic nerves and convenient operation for users.)

1. An optic nerve clamp for use in an optic nerve injury model, the clamp comprising: two strip-shaped rigid clamping pieces with completely symmetrical structures, wherein each clamping piece comprises: root, middle, tip; the root parts of the two clamping pieces are welded together, the middle part is a force application area, force is applied to clamp the clamp, the tip part is in a separated state when the force is not applied, and the tail end of the tip part is bent, and the inner side surfaces of the root part, the middle part and the tip part are flush; the middle parts of the two clamping pieces are correspondingly provided with three through holes along the deformation direction of the clamping pieces when the force is applied to clamp the clamping pieces; a screw and a nut are arranged in each through hole, when the screw and the nut are in threaded connection, the head of the screw and the nut are positioned at the outer sides of the two clamping pieces, the head of the screw is welded with the clamping piece in contact with the head of the screw, and the optic nerve is clamped by the clamp through the screwing of the nut on the screw; a pressure spring is arranged between the screw and the nut and sleeved on the screw; two ends of a pressure spring arranged on the screw rod close to the root of the clamping pieces are respectively clung to the inner walls of the two clamping pieces; and the compression springs arranged on the other two screw rods are positioned between the screw cap and the clamping piece adjacent to the screw cap.

2. An optic nerve clamp for use in an optic nerve injury model, the clamp comprising: two strip-shaped rigid clamping pieces with completely symmetrical structures, wherein each clamping piece comprises: root, middle, tip; the root parts of the two clamping pieces are welded together, the middle part is a force application area, force is applied to clamp the clamp, the tip part is in a separated state when the force is not applied, and the tail end of the tip part is bent, and the inner side surfaces of the root part, the middle part and the tip part are flush; the middle parts of the two clamping pieces are correspondingly provided with three through holes along the deformation direction of the clamping pieces when the force is applied to clamp the clamping pieces; a screw and a nut are arranged in each through hole, when the screw and the nut are in threaded connection, the head of the screw and the nut are positioned at the outer sides of the two clamping pieces, and the optic nerve is clamped by the clamp through the screwing of the nut on the screw; a pressure spring is arranged between the screw and the nut and sleeved on the screw; two ends of a pressure spring arranged on the screw rod close to the root of the clamping pieces are respectively clung to the inner walls of the two clamping pieces; the other two screws are provided with compression springs which are positioned between the heads of the screws and the clamping pieces adjacent to the heads of the screws; wherein the outer side wall of the clamping piece adjacent to the head part of the screw rod is subjected to rough treatment.

3. An optic nerve clamp for an optic nerve injury model according to claim 1, characterized in that the thickness of the bent part of the tip portion is 0.8mm, the bending angle is 146 degrees, the inner side of the top end of the tip portion is provided with an inclined plane bulge, the peak of the inclined plane bulge coincides with the end point of the inner side of the tip portion, and the included angle between the inclined plane of the inclined plane bulge and the inner side surface of the bent tip portion is 2 degrees; the angle is the angle between the central lines of the clamping pieces before and after bending, the length after bending is 11.4mm, the width of the bending part is 1.77mm, and the width of the tip part after bending from the bending part to the tip is gradually reduced by an included angle of 5 degrees.

4. An optic nerve clamp for use in an optic nerve injury model according to claim 1, wherein the surfaces of the two pieces of clip are subjected to a surface heat treatment with HRC 44-46.

5. An optic nerve clamp for an optic nerve injury model according to claim 2, characterized in that the thickness of the bent part of the tip part is 0.8mm, the bending angle is 146 degrees, the inner side of the top end of the tip part is provided with an inclined plane bulge, the peak of the inclined plane bulge coincides with the end point of the inner side of the tip part, and the included angle between the inclined plane of the inclined plane bulge and the inner side surface of the bent tip part is 2 degrees; the angle is the angle between the central lines of the clamping pieces before and after bending, the length after bending is 11.4mm, the width of the bending part is 1.77mm, and the width of the tip part after bending from the bending part to the tip is gradually reduced by an included angle of 5 degrees.

6. An optic nerve clamp for use in an optic nerve injury model according to claim 2, wherein the nut and the clip adjacent to the nut have intermeshing teeth disposed in an annular region where the nut and the clip abut, 6 annular teeth disposed in an annular region where the nut and the clip abut near the root, 9 annular teeth disposed in an annular region where the nut and the clip abut in the middle, and 12 annular teeth disposed in an annular region where the nut and the clip abut near the tip.

7. An optic nerve clamp for use in an optic nerve injury model according to claim 2, wherein the surfaces of the two pieces of clip are subjected to a surface heat treatment with HRC 44-46.

Technical Field

The invention belongs to the field of clamping devices.

Background

Traumatic optic neuropathy, also known as traumatic optic nerve injury, is a condition that causes severe visual impairment due to trauma to the eye or head, resulting in decreased vision, color vision disorders, visual field defects, and even complete vision loss, including direct traumatic optic neuropathy and indirect traumatic optic neuropathy the latter being more common. In the research of animal models, some scholars at home and abroad have already carried out the work in this respect. The method for establishing the common animal models of the used experimental animals including rabbits, rats, mice, guinea pigs, cats and the like is more: (1) the animal model of optic nerve injury caused by clamping method, the method is to open and expose the optic nerve by operation, clamp the optic nerve with the forceps and cause the optic nerve injury; the greatest disadvantage is that the degree of injury cannot be quantified well; in order to construct a safe and effective optic nerve injury model, a developer hopes to construct a forceps and optic nerve injury animal model by improving a prior experimental mode, already masters the basic steps of the experiment through the prior experiment, and has a prominent problem that a forceps and instrument capable of quantitatively damaging the optic nerve is needed. The prior art does not have a clamp with quantitative strength,

disclosure of Invention

Aiming at the defects in the background technology, the invention designs the clamp which can be used for quantifying the optic nerve injury.

An optic nerve clamp for use in an optic nerve injury model, the clamp comprising: two strip-shaped rigid clamping pieces with completely symmetrical structures, wherein each clamping piece comprises: root, middle, tip; the root parts of the two clamping pieces are welded together, the middle part is a force application area, force is applied to clamp the clamp, the tip part is in a separated state when the force is not applied, and the tail end of the tip part is bent, and the inner side surfaces of the root part, the middle part and the tip part are flush; the middle parts of the two clamping pieces are correspondingly provided with three through holes along the deformation direction of the clamping pieces when the force is applied to clamp the clamping pieces; a screw and a nut are arranged in each through hole, when the screw and the nut are in threaded connection, the head of the screw and the nut are positioned at the outer sides of the two clamping pieces, the head of the screw is welded with the clamping piece in contact with the head of the screw, and the optic nerve is clamped by the clamp through the screwing of the nut on the screw; a pressure spring is arranged between the screw and the nut and sleeved on the screw; two ends of a pressure spring arranged on the screw rod close to the root of the clamping pieces are respectively clung to the inner walls of the two clamping pieces; and the compression springs arranged on the other two screw rods are positioned between the screw cap and the clamping piece adjacent to the screw cap.

An optic nerve clamp for use in an optic nerve injury model, the clamp comprising: two strip-shaped rigid clamping pieces with completely symmetrical structures, wherein each clamping piece comprises: root, middle, tip; the root parts of the two clamping pieces are welded together, the middle part is a force application area, force is applied to clamp the clamp, the tip part is in a separated state when the force is not applied, and the tail end of the tip part is bent, and the inner side surfaces of the root part, the middle part and the tip part are flush; the middle parts of the two clamping pieces are correspondingly provided with three through holes along the deformation direction of the clamping pieces when the force is applied to clamp the clamping pieces; a screw and a nut are arranged in each through hole, when the screw and the nut are in threaded connection, the head of the screw and the nut are positioned at the outer sides of the two clamping pieces, and the optic nerve is clamped by the clamp through the screwing of the nut on the screw; a pressure spring is arranged between the screw and the nut and sleeved on the screw; two ends of a pressure spring arranged on the screw rod close to the root of the clamping pieces are respectively clung to the inner walls of the two clamping pieces; the other two screws are provided with compression springs which are positioned between the heads of the screws and the clamping pieces adjacent to the heads of the screws; wherein the outer side wall of the clamping piece adjacent to the head part of the screw rod is subjected to rough treatment.

Furthermore, the thickness of the bent part of the tip part is 0.8mm, the bending angle is 146 degrees, the inner side of the top end of the tip part is provided with an inclined plane bulge, the peak of the inclined plane bulge coincides with the end point of the inner side of the tip part, and the included angle between the inclined plane of the inclined plane bulge and the inner side face of the bent tip part is 2 degrees; the angle is the angle between the central lines of the clamping pieces before and after bending, the length after bending is 11.4mm, the width of the bending part is 1.77mm, and the width of the tip part after bending from the bending part to the tip is gradually reduced by an included angle of 5 degrees.

Furthermore, intermeshing teeth are arranged between the nut and the clamping piece adjacent to the nut, the teeth are arranged at the joint annular part of the nut and the clamping piece, 6 annular teeth are arranged at the joint annular part of the nut close to the root part and the clamping piece, 9 annular teeth are arranged at the joint annular part of the middle nut and the clamping piece, and 12 annular teeth are arranged at the joint annular part of the nut close to the tip part and the clamping piece;

further, the surface of the two-piece clip was subjected to a surface heat treatment of HRC 44-46.

The invention has the advantages of stable clamping, high reliability, quantitative damage to optic nerves and convenient operation for users.

Drawings

Fig. 1 is a perspective view of an embodiment of an optic nerve clamp for an optic nerve injury model according to the present invention.

FIG. 2 is a front view of an optic nerve clamp with labels for use in an optic nerve injury model according to the present invention.

FIG. 3 is a side view of an optic nerve clamp with labels for use in an optic nerve injury model of the present invention.

FIG. 4 is a close-up view of an optic nerve clamp tip used in an optic nerve injury model of the present invention.

Detailed Description

The following describes the detailed technical solution of the present invention with reference to fig. 3 and 4.