CN217697535U

CN217697535U - Puncture needle cylinder convenient to expand

Info

Publication number: CN217697535U
Application number: CN202221004757.4U
Authority: CN
Inventors: 徐松; 王利明
Original assignee: Zhejiang Haisheng Medical Equipment Co ltd
Current assignee: Zhejiang Haisheng Medical Equipment Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-11-01
Anticipated expiration: 2032-04-28

Abstract

The utility model belongs to the technical field of pjncture needle, concretely relates to puncture cylinder convenient to expansion. A puncture needle cylinder convenient to expand comprises a puncture needle cylinder, wherein the puncture needle cylinder comprises a cylinder body and a piston, a first guide wire channel is arranged in the cylinder body, a second guide wire channel is arranged at the piston, the first guide wire channel penetrates through the second guide wire channel, and the piston moves along the first guide wire channel; a through hole is formed in the first wire guide channel and is positioned at one end, fixedly connected with the barrel, of the first wire guide channel; the barrel is provided with a detachable puncture needle head, and a detachable expansion sleeve is sleeved at the puncture needle head.

Description

Puncture needle cylinder convenient to expand

Technical Field

The utility model belongs to the technical field of the pjncture needle, concretely relates to puncture cylinder convenient to expansion.

Background

The puncture needle is a medical instrument for sampling and injecting tissues of various organs such as kidney, liver, lung, mammary gland, thyroid gland, prostate, pancreas, testis, uterus, ovary, body surface and the like in minimally invasive surgery. When placing a catheter into the central vein, a guide wire is also placed with the aid of a puncture needle. When the puncture needle is used for placing the central venous catheter, the tube placing efficiency can be greatly improved. When the puncture needle is used, because the needle hole generated by the puncture needle is too small, the needle hole needs to be enlarged by using the expansion sleeve, and the central venous catheter is convenient to place. At present, the puncture needle and the expansion sleeve are generally in a separated state, and the puncture needle needs to be taken down and then put into the expansion sleeve for expansion in actual operation, so that the tedious work of medical staff can be reduced, and the operation efficiency is improved. In order to realize the integration of puncture and expansion, the utility model discloses hope to provide a puncture needle cylinder convenient to expansion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a puncture cylinder convenient to expansion to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a puncture needle cylinder convenient to expand comprises a puncture needle cylinder body and a piston, wherein a first guide wire channel is arranged in the cylinder body, a second guide wire channel is arranged at the piston, the first guide wire channel penetrates through the second guide wire channel, and the piston moves along the first guide wire channel; a through hole is formed in the first wire guide channel and is positioned at one end, fixedly connected with the barrel, of the first wire guide channel; the barrel is provided with a detachable puncture needle head, and a detachable expansion sleeve is sleeved at the puncture needle head.

Preferably, the expansion sleeve comprises an expansion section and a sleeve base, and the puncture needle comprises a needle head and a fixed base; the sleeve base is provided with a first buckle, and correspondingly, the fixed base is provided with a second buckle.

Further preferably, the expanding section is a tapered tube.

Further preferably, the expanding section comprises a conical pipe and a straight cylindrical pipe, the conical pipe and the straight cylindrical pipe are fixedly connected, and the straight cylindrical pipe is fixedly connected with the sleeve base.

Preferably, the piston comprises a piston head, a piston rod and a piston tail end in sequence, and the guide wire channel II penetrates through the piston head, the piston rod and the piston tail end; the piston rod is provided with reinforcing ribs which are uniformly distributed, and two sides of each reinforcing rib are fixedly connected with the piston head and the tail end of the piston respectively.

Further preferably, the outer edge of the rib is flush with the outer edge of the piston head.

Further preferably, the end of the piston is provided with an anti-slip recess.

Further preferably, the length of the needle is less than or equal to the length of the expanding section.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) The utility model provides a puncture needle cylinder convenient for expansion, an expansion sleeve is arranged at the puncture needle head, after puncture is completed, the expansion sleeve is pushed to a needle insertion point, and expansion is directly completed;

(2) The utility model provides a pair of puncture cylinder convenient to expansion is connected through the buckle between expansion sleeve and the puncture syringe needle, and convenient fixed expansion sleeve's position is also comparatively convenient when needing to dismantle simultaneously.

Drawings

Fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a perspective view of the structure of the present invention;

in the figure: 1. a barrel; 2. a piston; 3. a first guide wire channel; 5. a second guide wire channel; 6. a through hole; 7. a piston head; 8. a piston rod; 9. a piston end; 10. reinforcing ribs; 11. anti-skid dent; 12. a puncture needle head; 13. a needle head; 14. a fixed base; 15. expanding the sleeve; 16. an expansion section; 17. a sleeve base; 18. a first buckle; 19. and a second buckle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a puncturing needle cylinder with easy expansion, which comprises:

the utility model provides a puncture cylinder convenient to expansion, has included barrel 1 and piston 2, is equipped with seal wire passageway one 3 in barrel 1 inside, sets up seal wire passageway two 5 in piston 4 department, and seal wire passageway one 3 passes seal wire passageway two 5 for piston 2 can move along seal wire passageway one 3, realizes the axial motion of piston 2 in barrel 1 inside. The through hole 6 is formed in the first guide wire channel 3, the through hole 6 is used for observing blood return, and when the puncture needle cylinder is correctly placed in a vein, the blood return can enter the puncture needle cylinder through the through hole 6 to prompt an operator to enter the correct position of the puncture needle cylinder. The piston 2 comprises a piston head 7, a piston rod 8 and a piston tail end 9 in sequence, and the guide wire channel II 5 penetrates through the piston head 7, the piston rod 8 and the piston tail end 9. In order to stabilize the motion track of the piston 2, reinforcing ribs 10 are uniformly distributed on the piston rod 8, two sides of each reinforcing rib 10 are fixedly connected with the piston head 7 and the piston tail end 9 respectively, and the outer edges of the reinforcing ribs 10 are flush with the outer edge of the piston 4. The piston end 9 is also provided with an anti-slip recess 11. The head of the barrel body 1 is connected with a detachable puncture needle head 12, and the puncture needle head 12 comprises a needle head 13 and a fixed base 14; an expansion sleeve 15 is sleeved on the puncture needle 12, and the expansion sleeve 15 comprises an expansion section 16 and a sleeve base 17. The sleeve base 17 is provided with a first fastener 18, and the fixed base 14 is provided with a second fastener 19 correspondingly. The first catch 18 and the second catch 19 cooperate in such a way that the expansion sleeve 15 is detachably connected to the puncture needle 12. For the expansion, the expansion section 16 of the expansion sleeve 15 is provided as a conical tube.

When the device is used, an operator places the puncture needle cylinder in alignment with the vein position, pumps the piston 2 outwards after the placement, and observes whether blood return occurs in the through hole 6 on the first guide wire channel 3. If blood return occurs, the position is correct. After the puncture is completed, the puncture needle 12 is not pulled out, and the expansion sleeve 15 on the puncture needle 12 is further pushed into the vein along the puncture needle 12, so that the vein expansion is directly completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A puncture needle cylinder convenient for expansion is characterized in that: the puncture needle cylinder comprises a cylinder body and a piston, wherein a first guide wire channel is arranged in the cylinder body, a second guide wire channel is arranged at the piston, the first guide wire channel penetrates through the second guide wire channel, and the piston moves along the first guide wire channel; a through hole is formed in the first wire guide channel and is positioned at one end, fixedly connected with the barrel, of the first wire guide channel; the barrel is provided with a detachable puncture needle head, and a detachable expansion sleeve is sleeved at the puncture needle head.

2. A puncture needle cartridge facilitating expansion according to claim 1, wherein: the expansion sleeve comprises an expansion section and a sleeve base, and the puncture needle head comprises a needle head and a fixed base; the sleeve base is provided with a first buckle, and correspondingly, the fixed base is provided with a second buckle.

3. A puncture needle cartridge facilitating expansion according to claim 2, wherein: the expanding section is a conical tube.

4. A puncture needle cartridge facilitating expansion according to claim 2, wherein: the expansion section comprises a conical pipe and a straight cylindrical pipe, the conical pipe is fixedly connected with the straight cylindrical pipe, and the straight cylindrical pipe is fixedly connected with the sleeve base.

5. The puncture needle cartridge facilitating expansion according to claim 1, wherein: the piston comprises a piston head, a piston rod and a piston tail end in sequence, and the guide wire channel II penetrates through the piston head, the piston rod and the piston tail end; the piston rod is provided with reinforcing ribs which are uniformly distributed, and two sides of each reinforcing rib are fixedly connected with the piston head and the tail end of the piston respectively.

6. A puncture needle cartridge facilitating expansion according to claim 5, wherein: the outer edge of the reinforcing rib is flush with the outer edge of the piston head.

7. A puncture needle cartridge facilitating expansion according to claim 2, wherein: the piston end is provided with an anti-skid dent.

8. A puncture needle cartridge facilitating expansion according to claim 2, wherein: the length of the needle head is less than or equal to that of the expansion section.