CN201303968Y

CN201303968Y - Puncture needle

Info

Publication number: CN201303968Y
Application number: CNU2008200609611U
Authority: CN
Inventors: 黄丽
Original assignee: Individual
Current assignee: PHRAY TECHNOLOGY Co Ltd
Priority date: 2008-12-04
Filing date: 2008-12-04
Publication date: 2009-09-09
Anticipated expiration: 2018-12-04

Abstract

The utility model discloses a puncture needle, comprising a needle core and a handle, wherein, the handle is fixed at the tail of the needle core; a needle sleeve is sleeved on the needle core and the handle, and the head of the needle core extends out of the needle sleeve; a gap is arranged between the needle sleeve and the needle core, and the needle sleeve and the handle are sealed with a bulge; and the bulge and the handle are molded into a whole body by injection, and the budge can be a sealing ring which is sleeved outside the handle. The needle core can not penetrate through the two side walls of blood vessels, even if the needle core slips out of the blood vessels, the needle sleeve also plays a role of drainage. The utility model allows the needle core to back off during operation after puncture, thereby, the pain of patients due to mistaken touching of the puncture needle is avoided, and the hands of medical staff are free in puncture surgery.

Description

Puncture needle

Technical field

This utility model relates to a kind of medical apparatus and instruments, is specifically related to a kind of puncture needle.

Background technology

The puncture needle of using always on the hospital clinical comprises nook closing member, hands handle; Handle is fixed in the afterbody of nook closing member.During use, pinch handle by medical personnel, make a side of puncture needle penetration rate of blood tube wall, the syringe needle intravasation is implemented transfusion or other operation.

There is following shortcoming in this puncture needle:

1, in the process of puncture, normal because of can't the strict size of controlling the application of force, the both sides of causing syringe needle penetration rate of blood tube wall;

2, behind the syringe needle intravasation, puncture needle need stop longer a period of time in the patient body, in the meantime, medical personnel need carry out other operation, can't pinch the handle of puncture needle always, and this moment, puncture needle was easy to displacement, also can cause the both sides of syringe needle penetration rate of blood tube wall, the phenomenon that perhaps breaks away from blood vessel takes place, and increases patient's misery on foot, and makes the medical personnel that implement puncture procedure can't finish other as preparing activities such as apparatus, medicine.

The utility model content

Technical problem to be solved in the utility model provides a kind of puncture needle, and it can avoid the both sides of syringe needle penetration rate of blood tube wall.

For solving the problems of the technologies described above, the technical solution of this utility model puncture needle is:

Comprise nook closing member, handle, handle is fixed in the afterbody of nook closing member; Be arranged with needle guard on described nook closing member and the handle, the head of nook closing member stretches out needle guard, is provided with the gap between needle guard and the nook closing member, realizes sealing by projection between needle guard and the handle.

Described projection and handle are injected into one.Described projection also can be to be enclosed within the outer sealing ring of handle.

The technique effect that this utility model can reach is:

Nook closing member of the present utility model can not penetrate the blood vessel two side, even nook closing member is deviate from blood vessel, needle guard can also play the effect of drain.

In the operating process of this utility model after puncture nook closing member is retreated, can avoid bumping the phenomenon generation that puncture needle increases patient's misery, liberated the both hands of medical personnel in the puncture operation simultaneously because of mistake.

Description of drawings

Below in conjunction with the drawings and specific embodiments this utility model is described in further detail:

Fig. 1 is the cutaway view of this utility model puncture needle;

Fig. 2 is an axonometric chart of the present utility model;

Fig. 3 is the sketch map of nook closing member and handle;

Fig. 4 is a sectional axonometric drawing of the present utility model;

Fig. 5 is the sketch map of nook closing member when retreating.

Among the figure, 1 nook closing member, 2 handles, 3 needle guards, 4 projectioies.

The specific embodiment

As Fig. 1, Fig. 2, shown in Figure 4, this utility model puncture needle comprises nook closing member 1, handle 2, and handle 2 is fixed in the afterbody of nook closing member 1; Be arranged with needle guard 3 on nook closing member 1 and the handle 2, the head of nook closing member 1 stretches out needle guard 3, is provided with the gap between needle guard 3 and the nook closing member 1, is connected by projection 4 between needle guard 3 and the handle 2.Needle guard 3 is taper with the mating part of handle 2, the tail diameter minimum of needle guard 3.

As shown in Figure 3, projection 4 can with handle 2 integrated through injection molding, also can be to be enclosed within the outer circle sealing ring of handle 2.After nook closing member 1 penetrated blood vessel, blood can enter along the gap between needle guard 3 and the nook closing member 1 in the needle guard 3, and projection 4 can play the effect of sealing, stoped blood to flow out from the afterbody of needle guard 3.

The overcoat that needle guard 3 is made for polytetrafluoroethylmaterial material.

Taper fit between the afterbody of needle guard 3 and the handle 2 makes between needle guard 3 and the handle 2 to keep being connected.Needle guard 3 can with handle 2 that nook closing member 1 connects in relative mobile, promptly can relatively move between needle guard 3 and the nook closing member 1.

During use, nook closing member 1 is penetrated in the skin together with needle guard 3, after nook closing member 1 was pricked saturating blood vessel, needle guard 3 also entered skin.Nook closing member 1 is moved to the afterbody of puncture needle, and as shown in Figure 5, needle guard 3 then is retained in original position, and nook closing member 1 just can not penetrate the blood vessel two side like this, even nook closing member 1 is deviate from blood vessel, needle guard 3 can also play the effect of drain.

Because this utility model in use, the needle guard of being made by polytetrafluoroethylmaterial material 3 penetrates skin with nook closing member 1, after needle guard 3 enters skin, also can not go deep in the skin even the application of force is excessive, thereby avoid the both sides of syringe needle penetration rate of blood tube wall.Nook closing member 1 is retreated, then can make transfusion and other operating process safer, can not increase patient's misery because mistake runs into puncture needle.

Claims

1, a kind of puncture needle comprises nook closing member, handle, and handle is fixed in the afterbody of nook closing member; It is characterized in that: be arranged with needle guard on described nook closing member and the handle, the head of nook closing member stretches out needle guard, is provided with the gap between needle guard and the nook closing member, realizes sealing by projection between needle guard and the handle.

2, puncture needle according to claim 1 is characterized in that: described projection and handle are injected into one.

3, puncture needle according to claim 1 is characterized in that: described projection is to be enclosed within the outer sealing ring of handle.

4, puncture needle according to claim 1 is characterized in that: the mating part of described needle guard and handle is taper, the diameter minimum of needle guard afterbody.