Atraumatic neurosurgical dural hook

Abstract

The utility model provides a kind of aseptic neurosurgery dura mater hook needle, including needle body, the needle body is crescent structure, needle body's head is sharp, needle body's tail end is connected to pull holding part;The inside of the needle body is equipped with limiting portion, the limiting portion is the crescent structure that is arranged with needle body arc shape parallel interval, the head of limiting portion is round blunt, the tail end of limiting portion is fixedly connected with needle body;The distance between the head of the limiting portion and the head of needle body is less than the thickness of dura mater, the spacing between the limiting portion and needle body is less than the thickness of dura mater.When being punctured and pulled by the head of needle body to dura mater, on the one hand, the head of limiting portion will play the role of blocking and limiting to dura mater, avoid the head of needle body to puncture and injure the brain tissue under dura mater, on the other hand, since the spacing between the limiting portion and needle body is less than the thickness of dura mater, the part of dura mater after puncture will enter between needle body and limiting portion, can completely avoid dura mater to be punctured, reach the purpose of protecting the brain tissue under.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of medical devices, in particular to a kind of aseptic neurosurgery dura mater hook needle. BACKGROUND

[0002] Traditional neurosurgery incision dura mater, generally use sharp knife in the surface of dura mater, brain tissue is below dura mater, neurosurgeon according to hand feeling uses certain force to cut dura mater, after cutting small opening, use small hemostat to clamp one side opening, pull up dura mater, then cut dura mater with dura mater scissors, in the operation process, sharp knife often penetrates dura mater and directly damages brain tissue, therefore in clinical process, doctor generally first uses suture needle with tail threading to hang dura mater, then pulls suture line, makes dura mater local lift, so that dura mater and brain tissue exist certain gap, then use sharp knife to cut dura mater in dura mater local, but because of doctor operation factor, suture needle can still penetrate dura mater and damage brain tissue, thereby causing unnecessary harm to patient.

[0003] In summary, in the field of dura mater incision surgery, the above problems have become technical problems that need to be solved in the industry. SUMMARY

[0004] The present application makes up for the deficiencies of the prior art, and provides an aseptic neurosurgery dura mater hook needle, which solves the problem of direct damage to brain tissue caused by the penetration of sharp knife into dura mater during the operation process, and solves the problem of damage to brain tissue caused by the penetration of suture needle into dura mater.

[0005] The technical solution adopted by the present application to solve the above technical problems is as follows:

[0006] An aseptic neurosurgery dura mater hook needle, comprising a needle body, the needle body is in a crescent shape, the head of the needle body is sharp, and the tail end of the needle body is connected to a holding part; a limiting part is provided on the inner side of the needle body, the limiting part is in a crescent shape arranged in parallel and spaced apart from the arc of the needle body, the head of the limiting part is blunt, and the tail end of the limiting part is fixedly connected to the needle body; the distance between the head of the limiting part and the head of the needle body is less than the thickness of dura mater, and the distance between the limiting part and the needle body is less than the thickness of dura mater.

[0007] The holding part is a cylindrical rod structure, and the rod structure is fixedly connected to the tail end of the needle body.

[0008] The length of the rod structure is 8-12 cm.

[0009] The holding part is a pulling line, one end of the pulling line is fixedly connected to the tail end of the needle body.

[0010] The other end of the pulling line is fixedly connected to the head of the limiting part.

[0011] The tail end of the needle body has a locally concave flat structure.

[0012] The cross-section of the limiting part is a flat rectangle.

[0013] The head of the limiting part includes an arc-shaped structure or a spherical structure.

[0014] The present invention adopts the above-described solution and has the following advantages:

[0015] By designing a crescent-shaped needle body with a limiting part on the inner side of the needle body, the limiting part is a crescent-shaped structure parallel to the arc of the needle body. The distance between the head of the limiting part and the head of the needle body is less than the thickness of the dura mater. When puncturing and pulling the dura mater through the head of the needle body, on the one hand, the head of the limiting part will block and limit the dura mater, preventing the head of the needle body from puncturing the dura mater and damaging the underlying brain tissue. On the other hand, because the distance between the limiting part and the needle body is less than the thickness of the dura mater, part of the dura mater will enter between the needle body and the limiting part after puncture, which can completely prevent the dura mater from being punctured and achieve the purpose of protecting the underlying brain tissue. Attached image description:

[0016] Fig. 1 This is a three-dimensional structural diagram of the present invention.

[0017] Fig. 2 This is a schematic diagram of the structure of the present invention, in which the holding part is a lifting line.

[0018] Fig. 3 This is a schematic diagram of the structure of the present invention, in which the holding part is a long rod.

[0019] In the diagram, 1 is the needle body, 2 is the limiting part, 3 is the long rod structure, and 4 is the lifting line. Detailed implementation method:

[0020] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0021] like Figs. 1-3 As shown, a non-invasive neurosurgical dura mater hook includes a needle body 1, which has a crescent-shaped structure with a sharp head and a pull-holding part connected to the tail end. A limiting part 2 is provided on the inner side of the needle body 1. The limiting part 2 is a crescent-shaped structure arranged parallel to and at intervals with the needle body 1 in an arc shape, with a rounded head and a fixed tail end connected to the needle body. The distance between the head of the limiting part 2 and the head of the needle body 1 is less than the thickness of the dura mater, and the spacing between the limiting part 2 and the needle body 1 is less than the thickness of the dura mater.

[0022] The pulling part can be a cylindrical long rod structure 3, which is fixedly connected with the tail end of the needle body 1, and the length of the long rod structure 3 is 8-12 cm.

[0023] When the pulling part is the long rod structure 3, the medical staff can directly hold the long rod structure 3 to drive the needle body 1 and the limiting part 2 to move, and first perform the dura mater puncture operation, and then directly perform the dura mater pulling operation through the long rod structure 3 after the puncture is completed.

[0024] The pulling part can also be a pulling line 4, one end of the pulling line 4 is fixedly connected with the tail end of the needle body 1, and the other end of the pulling line 4 is fixedly connected with the head of the limiting part 2, when the pulling part is the pulling line 4, the tail end of the needle body 1 can be provided as a partially recessed flat structure, and the needle holder can clamp the part, and the flat structure can ensure that the needle body 1 is not easy to twist and tilt.

[0025] When the pulling part is the pulling line 4, the medical staff can use the needle holder to clamp the tail end of the needle body 1 to drive the needle body 1 and the limiting part 2 to move, first perform the dura mater puncture operation, and then perform the dura mater pulling operation through the pulling line 4 after the puncture is completed.

[0026] The transverse section of the limiting part 2 is a flat rectangle.

[0027] The head of the limiting part 2 includes an arc-shaped structure or a spherical structure, which plays a blocking role.

[0028] When the head of the needle body 1 punctures the dura mater, after the head of the needle body 1 penetrates into the dura mater to a certain depth, on the one hand, the head of the limiting part 2 will block and limit the dura mater, so that the head of the needle body 1 cannot continue to penetrate inward, avoiding the head of the needle body 1 from puncturing and damaging the brain tissue below, and on the other hand, since the spacing between the limiting part 2 and the needle body 1 is less than the thickness of the dura mater, the punctured part of the dura mater will enter between the needle body 1 and the limiting part 2, which can completely avoid the dura mater from being punctured, and achieve the purpose of protecting the brain tissue below.

[0029] The above specific embodiments cannot be regarded as a limitation on the protection scope of the present application, and any alternative improvement or change made by the person skilled in the art to the embodiments of the present application falls within the protection scope of the present application.

[0030] The details not described in the present application are the known technology of the person skilled in the art.

Claims

1. An atraumatic neurosurgical dural hook needle, characterized by: The needle body is in a crescent structure, the head of the needle body is sharp, and the tail end of the needle body is connected with a pulling part; the inner side of the needle body is provided with a limiting part in a crescent structure which is arranged in parallel and at intervals with the arc of the needle body, the head of the limiting part is round and blunt, and the tail end of the limiting part is fixedly connected with the needle body; the distance between the head of the limiting part and the head of the needle body is less than the thickness of the dura mater, and the distance between the limiting part and the needle body is also less than the thickness of the dura mater.

2. Atraumatic neurosurgical dural hook according to claim 1, characterized in that: The pulling part is in a cylindrical long rod structure, and the long rod structure is fixedly connected with the tail end of the needle body.

3. Atraumatic neurosurgical dural hook according to claim 2, wherein: The length of the long rod structure is 8-12 cm.

4. The atraumatic neurosurgical dural hook needle of claim 1, wherein: The pulling part is a pulling line, one end of the pulling line is fixedly connected with the tail end of the needle body.

5. Atraumatic neurosurgical dural hook according to claim 4, wherein: The other end of the pulling line is fixedly connected with the head of the limiting part.

6. Atraumatic neurosurgical dural hook according to claim 4, wherein: The tail end of the needle body is a partially recessed flat structure.

7. The atraumatic neurosurgical dural hook needle of claim 1, wherein: The transverse section of the limiting part is a flat rectangle.

8. The atraumatic neurosurgical dural hook needle of claim 1, wherein: The head of the limiting part comprises an arc structure or a spherical structure.

Images