CN219397520U

CN219397520U - Puncture needle

Info

Publication number: CN219397520U
Application number: CN202221685307.6U
Authority: CN
Inventors: 冷辉; 黄孝敏; 敖磊
Original assignee: SHANGHAI REACH MEDICAL INSTRUMENT CO Ltd
Current assignee: SHANGHAI REACH MEDICAL INSTRUMENT CO Ltd
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2023-07-25
Anticipated expiration: 2032-07-01

Abstract

The utility model discloses a puncture needle, comprising: a handle structure and a puncture structure clamped with the handle structure; the handle structure comprises a rubber sleeve, a handle clamped with the rubber sleeve and a clamping piece arranged on the handle, wherein the puncture structure penetrates through the handle structure; the handle comprises a handle seat, a puncture hole penetrating through the handle seat in the length direction of the handle seat, a clamping seat arranged at one end of the handle seat, and a clamping hole which is arranged in the vertical direction and positioned on the clamping seat, wherein a spring hole is formed in the clamping hole, and a spring is arranged in the spring hole. The handle and the rod piece can be quickly disassembled and assembled, one handle can be realized and matched with the rod piece which is punctured under different conditions in the operation. The disassembly and assembly design are convenient for tool cleaning.

Description

Puncture needle

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a puncture needle.

Background

A typical vertebra comprises two parts: anterior segment (or anterior segment), i.e., vertebral body; the posterior segment (or posterior segment) is called the pedicle (neuroarch) and surrounds the vertebral opening that accommodates the spinal cord. The vertebral arch is formed from a pair of pedicles and a pair of laminae and supports seven procedures, four joints, two lateral and one spinous process. The pedicles are two relatively short, thick protrusions that extend one posteriorly (e.g., laterally) from the superior portion of the vertebral body at the juncture of the posterior surface and the lateral surface of the vertebral body. The function of the pedicle is to connect the vertebral body to the vertebral arch. In various spinal surgeries, pedicles are commonly used as radiographic markers and access points. The trend in spinal surgery is to perform the surgery in a minimally invasive or minimally invasive manner to avoid the great trauma of so-called open or "direct access" procedures, which require large incisions to expose the diseased space to be treated.

However, when the existing puncture needle doctor uses, the joint of the handle and the puncture needle is easily disjointed when the doctor pulls the joint by force, so that the vertebra of a patient is easily damaged, and the existing puncture needle passage has a general effect when in use.

Meanwhile, the conditions of various patients are different, and doctors can use puncture needle tools with different structures in the operation process, so that the configuration of the tools before the operation is required to be complicated.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide the puncture needle which is simple and reasonable in structure, and can not lead the handle and the puncture needle to fall off when a doctor uses the puncture needle, thereby facilitating the operation of the doctor and avoiding the secondary injury of a patient. In order to achieve the above objects and other advantages in accordance with the purpose of the present utility model, there is provided a puncture needle comprising:

a handle structure and a puncture structure clamped with the handle structure;

the handle structure comprises a rubber sleeve, a handle clamped with the rubber sleeve and a clamping piece arranged on the handle, wherein the puncture structure penetrates through the handle structure;

the handle comprises a handle seat, a puncture hole penetrating through the handle seat in the length direction of the handle seat, a clamping seat arranged at one end of the handle seat, and a clamping hole which is arranged in the vertical direction and positioned on the clamping seat, wherein a spring hole is formed in the clamping hole, and a spring is arranged in the spring hole.

Preferably, the clamping piece is placed in the clamping hole, the bottom of the clamping piece is abutted against the spring, and the top of the clamping piece extends out of the end face of the clamping hole.

Preferably, the clamping piece comprises a clamping block, a moving hole is formed in the clamping block, and the diameter of the moving hole is larger than that of the penetrating hole.

Preferably, the puncture structure comprises a puncture rod and a fixing rod in threaded connection with the puncture rod, wherein the puncture rod comprises a clamping groove section, a middle section integrally connected with the clamping groove section and a cutting section integrally connected with the middle section.

Preferably, a clamping groove is formed in the clamping groove section, clamping blocks are respectively fixed on the opposite surfaces of the lower end part of the moving hole, and the clamping blocks are mutually clamped with the clamping groove.

Preferably, the cutting segment is a cutting edge, and the cutting edge comprises four cutting surfaces, wherein two cutting surfaces are arranged oppositely, and the heights of the cutting surfaces gradually decrease along the length direction of the cutting surfaces to form taper.

Compared with the prior art, the utility model has the beneficial effects that: the clamping piece comprises a clamping block, a moving hole is formed in the clamping block, the diameter of the moving hole is larger than that of the penetrating hole, the moving hole comprises an upper semicircular hole and a lower semicircular hole, a clamping groove is formed in the clamping groove section, clamping blocks are respectively fixed on the surfaces of the lower end parts of the moving hole, when the clamping piece is pressed down, the clamping groove section of the penetrating structure is located at the position of the upper semicircular hole, the penetrating structure can be taken out from the handle structure, when the clamping piece is loosened, the clamping piece moves along the vertical direction through the elasticity of a spring, the clamping groove section is located in the lower semicircular hole, the clamping grooves of the clamping block and the clamping groove section are clamped with each other, the penetrating structure is fixedly connected to the handle structure, and a doctor pulls out the penetrating needle when in use, so that the penetrating structure and the handle structure are not easy to be disjointed.

Drawings

FIG. 1 is a schematic view showing a three-dimensional structure of a puncture needle according to the present utility model;

FIG. 2 is a schematic view of a three-dimensional exploded structure of a puncture needle according to the present utility model;

FIG. 3 is a schematic view of the three-dimensional exploded structure of the handle structure of the lancet according to the present utility model;

fig. 4 is a schematic view showing a three-dimensional structure of a handle of the puncture needle according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a lancet comprising: a handle structure 20 and a puncture structure 10 clamped with the handle structure 20; the handle structure 20 comprises a rubber sleeve 21, a handle 23 clamped with the rubber sleeve 21 and a clamping piece 22 arranged on the handle 23, wherein the puncture structure 10 penetrates through the handle structure 20; the handle 23 comprises a handle seat 231, a puncture hole 232 penetrating through the handle seat 231 along the length direction of the handle seat 231, a clamping seat 233 arranged at one end of the handle seat 231, and a clamping hole 234 arranged on the clamping seat 233 along the vertical direction, wherein a spring hole 235 is arranged on the clamping hole 234, a spring is arranged in the spring hole 235, and when in use, the spring is placed in the spring hole 235, the clamping piece 22 is placed in the clamping hole 234, so that the bottom of the clamping piece 22 is in contact with the spring hole 235, the clamping piece 22 is subjected to elastic force of the spring, and the moving hole 222 on the clamping piece 22 is identical to the puncture hole 232, so that the puncture structure 10 can penetrate through the handle structure 20 and extend out of the clamping seat 233.

Further, the clamping piece 22 is disposed in the clamping hole 234, the bottom of the clamping piece 22 abuts against the spring, and the top of the clamping piece 22 extends out of the end face of the clamping hole 234.

Further, the clamping piece 22 includes a clamping block 221, a moving hole 222 is formed in the clamping block 221, the diameter of the moving hole 222 is larger than that of the piercing hole 232, the moving hole 222 includes an upper semicircular hole and a lower semicircular hole, the upper semicircular hole and the lower semicircular hole form a moving hole 222, the diameter of the upper semicircular hole is larger than that of the piercing hole 232, the diameter of the lower semicircular hole is smaller than that of the piercing hole 232, clamping blocks are respectively fixed on opposite surfaces of the lower semicircular hole, the outer surface of the top of the clamping piece 22 is in a smooth arc shape, when the clamping piece 22 is pressed down, the clamping groove section 113 of the piercing structure 10 is located at the upper semicircular hole position, so that the piercing structure 10 can be taken out from the handle structure 20, when the clamping piece 22 is loosened, the clamping piece 22 moves along the vertical direction through the elasticity of a spring, so that the clamping groove section 113 is located in the lower semicircular hole, the clamping grooves 114 of the clamping block and the clamping groove section 113 are mutually clamped, the piercing structure 10 is easily connected to the handle structure 20, and the piercing structure 20 is not easy to be pulled out by a doctor, and the piercing structure 20 is not in use.

Further, the puncture structure 10 includes a puncture rod 11 and a fixing rod 12 screwed to the puncture rod 11, and the puncture rod 11 includes a clamping groove section 113, a middle section 111 integrally connected to the clamping groove section 113, and a cutting section 112 integrally connected to the middle section 111.

Further, a clamping groove 114 is formed in the clamping groove section 113, clamping blocks are respectively fixed on opposite surfaces of the lower end portion of the moving hole 222, and the clamping blocks are mutually clamped with the clamping groove 114.

Further, the cutting segment 112 is a cutting edge, the cutting edge includes four cutting surfaces, two of the cutting surfaces are oppositely arranged, the area of one of the cutting surfaces is larger than that of the other cutting surface, the cutting edge includes three cutting edges, four cutting edges and six cutting edges, the height of the cutting surfaces is gradually reduced along the length direction of the cutting surfaces to form a taper, and the cutting segment 112 is convenient for a doctor to open a passage in a bone during use, is convenient and labor-saving to cut, and is not easy to damage nerves.

The number of devices and the scale of processing described herein are intended to simplify the description of the utility model, and applications, modifications and variations of the utility model will be apparent to those skilled in the art.

Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. A lancet, comprising:

a handle structure (20) and a puncture structure (10) which is clamped with the handle structure (20);

the handle structure (20) comprises a rubber sleeve (21), a handle (23) clamped with the rubber sleeve (21) and a clamping piece (22) arranged on the handle (23), wherein the puncture structure (10) penetrates through the handle structure (20);

the handle (23) comprises a handle seat (231), a puncture hole (232) penetrating through the handle seat (231) along the length direction of the handle seat (231), a clamping seat (233) arranged at one end of the handle seat (231) and a clamping hole (234) arranged on the clamping seat (233) along the vertical direction, wherein a spring hole (235) is arranged on the clamping hole (234), and a spring is arranged in the spring hole (235).

2. The puncture needle according to claim 1, characterized in that the clamping piece (22) is placed in the clamping hole (234), the bottom of the clamping piece (22) is abutted against the spring, and the top of the clamping piece (22) extends out of the end face of the clamping hole (234).

3. A puncture needle according to claim 1, characterized in that the clamping member (22) comprises a clamping block (221), the clamping block (221) is provided with a moving hole (222), and the diameter of the moving hole (222) is larger than that of the puncture hole (232).

4. A puncture needle according to claim 3, characterized in that the puncture structure (10) comprises a puncture rod (11) and a fixing rod (12) in threaded connection with the puncture rod (11), the puncture rod (11) comprising a clamping groove section (113), a middle section (111) integrally connected with the clamping groove section (113) and a cutting section (112) integrally connected with the middle section (111).

5. The puncture needle according to claim 4, wherein the clamping groove section (113) is provided with a clamping groove (114), and clamping blocks are respectively fixed on opposite surfaces of the lower end part of the moving hole (222), and the clamping blocks are mutually clamped with the clamping groove (114).

6. A puncture needle according to claim 5, characterized in that the cutting segment (112) is a cutting edge comprising four cutting faces, two of which are arranged opposite each other, the height of the cutting faces decreasing gradually along the length of the cutting faces.