CN215994164U

CN215994164U - Puncture needle

Info

Publication number: CN215994164U
Application number: CN202121397765.5U
Authority: CN
Inventors: 朱清毅; 周宏伟; 李云锋; 陈一凡
Original assignee: Jiangsu Sunride Medical Technology Co ltd
Current assignee: Jiangsu Sunride Medical Technology Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-03-11
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a puncture needle, which comprises a needle body, wherein the needle body comprises a metal needle head and a non-metal needle body which are positioned at the front end part of the needle body; the non-metal needle body is connected with the rear end part of the metal needle head. The puncture device reduces the processing cost and is convenient to use under the condition of ensuring that the clearance between the puncture device and the inner wall of the puncture hole of the puncture device reaches the standard.

Description

Puncture needle

Technical Field

The utility model relates to a puncture needle, and belongs to the field of medical instruments.

Background

At present, the needle body of the used pjncture needle of prior art's puncture ware, for its hardness, the needle body adopts all metal to make usually, and this kind of all metal needle body can not be greater than 0.3mm usually for the clearance between its and the inner wall of the puncture hole of puncture ware, if adopt all metal needle body, the needle body outer wall need accurate processing, just can guarantee the clearance between the inner wall of its and the puncture hole of puncture ware, and processing is more loaded down with trivial details, and the processing cost is higher, and it is inconvenient to use.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a puncture needle which reduces the processing cost and is convenient to use under the condition of ensuring that the clearance between the puncture needle and the inner wall of a puncture hole of a puncture outfit reaches the standard.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a puncture needle comprising a needle body, the needle body comprising:

the metal needle head is positioned at the front end part of the needle body;

the non-metal needle body is connected with the rear end part of the metal needle head.

Further, the non-metal needle body is made of plastic.

Furthermore, a connecting structure suitable for fixedly connecting the metal needle head to the nonmetal needle body is arranged between the nonmetal needle body and the rear end part of the metal needle head.

Further provided is a structure form of a connection structure between a non-metal needle body and a metal needle head, the connection structure comprising:

the inserting hole is formed in one of the non-metal needle body and the metal needle head;

the inserting column is arranged on the other one of the non-metal needle body and the metal needle head and is tightly matched in the inserting hole.

Furthermore, in order to realize good insertion and avoid the phenomenon that the metal needle head is separated from the non-metal needle body, the insertion column is of a frustum-shaped structure with a small outer part and a large inner part.

There is further provided another structure of a connection structure between a non-metal needle body and a metal needle head, the connection structure including:

the threaded hole is formed in one of the non-metal needle body and the metal needle head;

and the threaded column is arranged on the other one of the non-metal needle body and the metal needle head and screwed in the threaded hole through threads.

Furthermore, the joint of the outer walls of the non-metal needle body and the metal needle head is arranged in a smooth transition mode.

Further, in order to facilitate the connection with the puncture outfit, the puncture outfit also comprises:

and the connecting cap is connected with the rear end part of the needle body.

There is further provided a concrete structure of a connection cap, comprising:

the rear end part of the needle body is tightly matched with the cap seat, and the peripheral wall of the cap seat is provided with at least one pair of elastic connecting wings;

the cap is connected to the cap base, and at least part of the elastic connecting wing is exposed out of the peripheral wall of the cap.

At least one connecting post is arranged on the inner side of the rear wall of the cap;

the rear wall of the cap base is provided with connecting holes corresponding to the connecting columns, and the connecting columns are inserted into the corresponding connecting holes to connect the cap cover and the cap base.

After the technical scheme is adopted, the needle head of the needle body of the puncture needle is made of metal, the puncture rigidity of the needle body is guaranteed, the needle body is made of nonmetal, when the puncture needle is manufactured, only the outer wall surface of the metal needle head is processed, the precision of the nonmetal needle body is guaranteed through a mold, the gap between the nonmetal needle body and the inner wall of a puncture hole of a puncture device can be guaranteed to meet the standard requirement without processing the whole outer wall surface of the needle body, the processing difficulty is reduced, and the puncture needle is more convenient to use.

Drawings

FIG. 1 is a perspective view of a needle body of a puncture needle according to the present embodiment;

FIG. 2 is a perspective view of a metal needle according to a first embodiment;

FIG. 3 is a perspective view of a non-metallic needle body according to a first embodiment;

FIG. 4 is a perspective view of a metal needle according to the second embodiment;

FIG. 5 is a perspective view of a non-metallic needle body according to a second embodiment;

FIG. 6 is a perspective view of a puncture needle in a third embodiment;

FIG. 7 is a perspective view of a cap according to a third embodiment;

fig. 8 is a perspective view of the cap in the third embodiment.

Detailed Description

In order that the present invention may be more readily and clearly understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.

Example one

As shown in fig. 1 to 3, a puncture needle comprises a needle body, wherein the needle body comprises:

a metal needle head 1 positioned at the front end part of the needle body;

the non-metal needle body 2, the non-metal needle body 2 links to each other with the rear end portion of metal syringe needle 1.

In the present embodiment, the non-metallic needle body 2 may be made of plastic, but is not limited thereto.

In this embodiment, in order to firmly connect the non-metal needle body 2 and the metal needle 1, a connection structure suitable for fastening the metal needle 1 to the non-metal needle body 2 is provided between the non-metal needle body 2 and the rear end of the metal needle 1.

In this embodiment, the connection structure may be a structure including:

the inserting hole 21 is arranged on the non-metal needle body 2;

the inserting column 11 is arranged on the metal needle 1, and the inserting column 11 is tightly matched in the inserting hole 21.

Of course, the insertion hole 21 can also be arranged on the metal needle 1, and the insertion column 11 is arranged on the non-metal needle body 2.

Specifically, in order to realize the fastening connection between the non-metal needle body 2 and the metal needle 1, the insertion column 11 may be a frustum-shaped structure with a small outside and a large inside.

In order to ensure that the puncture needle is smoother when entering and exiting the puncture hole, the joint of the outer walls of the non-metal needle body 2 and the metal needle head 1 is arranged in a smooth transition way.

Example two

The structure of the second embodiment is the same as that of the first embodiment, except that: as shown in fig. 4 and 5, the connection structure may be a structure including:

a threaded hole 22 arranged on the non-metal needle body 2;

a threaded column 12 arranged on the metal needle 1, wherein the threaded column 12 is screwed into the threaded hole 22.

Of course, the threaded post 12 may also be provided on the non-metallic needle body 2, with the threaded hole 22 being provided on the metallic needle 1.

The needle head of the needle body of the puncture needle in the first embodiment and the second embodiment is made of metal, so that the puncture rigidity is guaranteed, the needle body is made of nonmetal, during manufacturing, only the outer wall surface of the metal needle head 1 needs to be processed on the outer wall surface, the precision of the nonmetal needle body 2 is guaranteed through a mold on the outer wall surface, the whole outer wall surface of the needle body does not need to be processed, the gap between the nonmetal needle body and the inner wall of the puncture hole of the puncture device can be guaranteed to meet the standard requirement, the processing difficulty is reduced, and the puncture needle is more convenient to use.

EXAMPLE III

In the puncture needle of the present embodiment, the needle body is the structure of the first embodiment or the second embodiment, and as shown in fig. 6 to 8, the puncture needle further includes:

a connecting cap 3, the connecting cap 3 is connected with the rear end part of the needle body.

The connecting cap 3 is provided primarily for use with a puncture instrument.

Specifically, the structure of the connecting cap 3 is specifically: as shown in fig. 7 and 8, the connecting cap 3 includes:

a cap 31, the rear end of the needle body is tightly fitted on the cap 31, and the peripheral wall of the cap 31 is provided with at least one pair of elastic connection wings 31 a;

and a cap 32, wherein the cap 32 is connected to the cap holder 31, and at least a part of the elastic connection wing 31a is exposed out of the peripheral wall of the cap 32.

In the present embodiment, the elastic connection wing 31a is provided with a pair, but is not limited thereto.

Specifically, four connecting posts 32a are provided inside the rear wall of the cap 32;

the cap holder 31 is provided at a rear wall thereof with coupling holes 31b corresponding to the coupling posts 32a, and the cap 32 is coupled to the cap holder 31 by inserting the coupling posts 32a into the corresponding coupling holes 31 b.

The technical problems, technical solutions and advantages of the present invention have been described in detail with reference to the above embodiments, and it should be understood that the above embodiments are merely exemplary and not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A puncture needle is characterized by comprising a needle body, wherein the needle body comprises:

a metal needle (1) positioned at the front end part of the needle body;

the non-metal needle body (2), the non-metal needle body (2) with the rear end portion of metal syringe needle (1) links to each other.

2. A puncture needle according to claim 1,

the non-metal needle body (2) is made of plastic.

3. A puncture needle according to claim 1,

the non-metal needle body (2) and the rear end part of the metal needle head (1) are provided with a connecting structure which is suitable for fixedly connecting the metal needle head (1) to the non-metal needle body (2).

4. A puncture needle according to claim 3,

the connection structure includes:

the inserting hole (21) is arranged on one of the non-metal needle body (2) and the metal needle head (1);

the inserting column (11) is arranged on the other one of the non-metal needle body (2) and the metal needle head (1), and the inserting column (11) is tightly matched in the inserting hole (21).

5. A puncture needle according to claim 4,

the insertion column (11) is of a frustum-shaped structure with a small outer part and a large inner part.

6. A puncture needle according to claim 3,

the connection structure includes:

a threaded hole (22) arranged on one of the non-metal needle body (2) and the metal needle head (1);

the thread column (12) is arranged on the other one of the non-metal needle body (2) and the metal needle head (1), and the thread column (12) is screwed in the thread hole (22) through threads.

7. A puncture needle according to claim 1,

the non-metal needle body (2) and the outer wall of the metal needle head (1) are connected in a smooth transition mode.

8. A puncture needle according to claim 1,

it still includes:

the connecting cap (3), the connecting cap (3) with the rear end of the needle body is connected.

9. A puncture needle according to claim 8,

the connection cap (3) comprises:

the rear end part of the needle body is tightly matched on the cap seat (31), and the peripheral wall of the cap seat (31) is provided with at least one pair of elastic connecting wings (31 a);

a cap (32), wherein the cap (32) is connected to the cap base (31), and at least part of the elastic connecting wing (31 a) is exposed out of the peripheral wall of the cap (32).

10. A puncture needle according to claim 1,

at least one connecting post (32 a) is arranged on the inner side of the rear wall of the cap (32);

the rear wall of the cap base (31) is provided with a connecting hole (31 b) corresponding to the connecting column (32 a), and the connecting column (32 a) is inserted into the corresponding connecting hole (31 b) to connect the cap cover (32) and the cap base (31).