CN201414968Y

CN201414968Y - Disposable safe venous retention needle

Info

Publication number: CN201414968Y
Application number: CN2009200575554U
Authority: CN
Inventors: 潘名辉
Original assignee: DRAGON HEART MEDICAL DEVICES Co Ltd
Current assignee: DRAGON HEART MEDICAL DEVICES Co Ltd
Priority date: 2009-05-31
Filing date: 2009-05-31
Publication date: 2010-03-03
Anticipated expiration: 2019-05-31

Abstract

The utility model relates to a disposable safe venous retention needle, comprising a guide tube seat, a needle handle, a spring and a needle sleeve; the needle handle is connected with a needle head which moves along the inner part of the guide tube seat, the needle sleeve is connected with the spring which is respectively connected with the needle sleeve and the needle handle, the end of the needle sleeve is provided with one piece of elastic locking dog at least at the opening position, and the elastic locking dog is tightly pressed at a needle tubing position of the needle head when the needle handle and the guide tube seat are not completely separated; when the venous retention is carried out, that is, the needle handle and the guide tube seat are separated completely, the needle headconnected with the needle handle can be automatically collected in the needle sleeve by virtue of elastic force of the spring, at the moment, the elastic locking dog on the end of the needle sleeve closes the opening position of the end of the needle sleeve completely, so as to prevent the needle head from being used again and radically prevent medical personnel from being punctured by the used needle head owning to careless treatment. The disposable safe venous retention needle has convenient usage, safety and reliability, low production cost and can be widely applied to medical and clinicaltreatment.

Description

Disposable venous detaining needle safe in utilization

One, technical field

This utility model relates to a kind of venous detaining needle that medical field is used for the clinical patient aspect that belongs to, particularly disposable venous detaining needle safe in utilization.

Two, background technology

At present; the existing venous detaining needle that is used for the clinical patient aspect mainly is made of needle handle and catheter block; when finishing venous indwelling; just when needle handle with after catheter block separates; because of syringe needle that needle handle connected partly lacks protector, this make easily user owing to handle the syringe needle that was used accidentally stab cause producing unexpected.

Three, utility model content

The purpose of this utility model is the venous detaining needle that a kind of improvement will be provided; particularly disposable venous detaining needle safe in utilization; to solve the existing at present venous detaining needle that is used for the clinical patient aspect; because of syringe needle that needle handle connected partly lacks protector, existing the user that makes is easily stabbed and is caused producing unexpected drawback owing to handling the syringe needle that was used accidentally.

The purpose of this utility model is achieved in that the disposable venous detaining needle safe in utilization of this utility model comprises catheter block, needle handle, spring and needle guard, described needle handle is connected with syringe needle, described syringe needle is movable in the catheter block, it is characterized in that: described needle guard is connected in spring, described spring is connected with needle handle with needle guard respectively, the termination of described needle guard has a slice elastic lock tongue at least at its opening part, and described elastic lock tongue tightly overlays the needle tubing position in syringe needle when needle handle does not separate fully with catheter block.When finishing venous indwelling, just when needle handle with after catheter block separates fully, dependence is made needle handle connect by the elastic force of spring syringe needle is recovered in the needle guard automatically, at this moment, elastic lock tongue on the needle guard termination is taken advantage of a situation by elastic force just with the termination openings place complete closed of needle guard, syringe needle can't be reused, thereby, can fundamentally avoid and prevent medical personnel and stab because handle the syringe needle that was used accidentally.

This utility model can guarantee disposable use, can avoid the non-artificial viral and pathogenic cross infection that causes effectively, prevents medical personnel and stabs because handle the syringe needle that was used accidentally.It is simple in structure, and is esy to use, safe and reliable, and production cost is low, can be widely used in medical treatment aspect such as clinical.

Four, description of drawings

Fig. 1, be according to the structural representation that the utility model proposes;

Fig. 2, be according to the structural representation when needle handle partly separates with catheter block described in the utility model;

Fig. 3, be according to the work sketch map when needle handle separates fully with catheter block described in the utility model;

Fig. 4, be the A-A enlarged drawing of Fig. 1.

Five, the specific embodiment

Below in conjunction with drawings and Examples structure of the present utility model is further described:

Labelling among the figure: 1, catheter block; 2, needle handle; 2-1, syringe needle; 2-2, needle tubing; 3, spring; 4, needle guard; 4-1, termination; 4-2, elastic lock tongue.

In the drawings, the disposable venous detaining needle safe in utilization of this utility model comprises catheter block 1, needle handle 2, spring 3 and needle guard 4, described needle handle 2 is connected with syringe needle 2-2, described syringe needle 2-2 is interior movable along catheter block 1, it is characterized in that: described needle guard 4 is connected in spring 3, described spring 3 is connected with needle handle 2 with needle guard 4 respectively, the termination 4-1 of described needle guard 4 has a slice elastic lock tongue 4-2 at least at its opening part, and described elastic lock tongue 4-2 tightly overlays the needle tubing 2-2 position in syringe needle 2-1 when needle handle 2 does not separate fully with catheter block 2.When finishing venous indwelling, just when needle handle 2 with after catheter block 1 separates fully, the syringe needle 2-2 that dependence is connected needle handle 2 by the elastic force of spring 3 is recovered in the needle guard 4 automatically, at this moment, elastic lock tongue 4-2 on the needle guard 4 termination 4-1 takes advantage of a situation by elastic force just with the termination 4-1 opening part complete closed of needle guard 4, syringe needle 2-1 can't be reused, thereby, can fundamentally avoid and prevent medical personnel and stab because handle the syringe needle 2-1 that was used accidentally.

Above mentioned spring 3 make by stainless steel material or macromolecular material.

Above-described only is preferential embodiment of the present utility model.Should be pointed out that to those skilled in the art under the prerequisite that does not break away from this utility model principle, can also make some modification and improvement, this also is considered as belonging to protection domain of the present utility model.For example, the termination 4-1 of described needle guard 4 can have elastic lock tongue 4-2 more than two at its opening part, also can form the elastic lock tongue 4-2 of Flos Mume shape.

Claims

1, a kind of disposable venous detaining needle safe in utilization, comprise catheter block (1), needle handle (2), spring (3) and needle guard (4), described needle handle (2) is connected with syringe needle (2-2), described syringe needle (2-2) is interior movable along catheter block (1), it is characterized in that: described needle guard (4) is connected in spring (3), and described spring (3) is connected with needle handle (2) with needle guard (4) respectively.

2, disposable venous detaining needle safe in utilization according to claim 1, it is characterized in that: the termination (4-1) of described needle guard (4) has a slice elastic lock tongue (4-2) at least at its opening part, and described elastic lock tongue (4-2) tightly overlays needle tubing (2-2) position in syringe needle (2-1) when needle handle (2) does not separate fully with catheter block (2).

3, disposable venous detaining needle safe in utilization according to claim 1 and 2, it is characterized in that: when described needle handle (2) with after catheter block (1) separates fully, the syringe needle (2-2) that dependence is connected needle handle (2) by the elastic force of spring (3) is recovered in the needle guard (4) automatically, the elastic lock tongue (4-2) on needle guard (4) termination (4-1) by elastic force just with termination (4-1) the opening part complete closed of needle guard (4).