CN105726101A

CN105726101A - Puncture needle

Info

Publication number: CN105726101A
Application number: CN201610247827.1A
Authority: CN
Inventors: 曹轲
Original assignee: Hubei Kangquan Medical Technology Co Ltd
Current assignee: Hubei Kangquan Medical Technology Co Ltd
Priority date: 2016-04-20
Filing date: 2016-04-20
Publication date: 2016-07-06

Abstract

The invention relates to a puncture needle which comprises a sleeve, a needle core and a handle, wherein the handle is connected to the upper part of the sleeve, and comprises a fixed part, and the fixed part is provided with two extending rods; the upper and lower halves of the fixed part are provided with first and second through holes which are communicated respectively; the aperture of the second through hole is equal to the aperture of the sleeve, and the aperture of the first through hole is greater than the aperture of the second through hole; the needle core sequentially penetrates through the first and second through holes and extends into the sleeve; a spring is arranged in the first through hole; a pushrod comprises a rod body and a push handle arranged at the upper end of the rod body; the rod body is arranged in the first through hole, and is in contact with the spring; a groove is formed in the lower end of the rod body, and the top end of the needle core is clamped in the groove. According to the puncture needle, extension and contraction of the needle core are controlled by controlling movement of the needle core through the handle, the spring and the pushrod. In addition, when the needle core is separated from the sleeve, elastic pieces of a puncture wound prevention device are clamped into clamping grooves of the needle core, so that a needle point is sleeved and an operator is prevented from being punctured and wounded by the needle point.

Description

Puncture needle

Technical field

The present invention relates to a kind of medical device, in particular to a kind of puncture needle.

Background technology

At present, the nook closing member of clinical puncture needle used is fixed, and namely needle point exposes, non-retractable, and this puncture needle has following several shortcoming: 1, in piercing process, if point of puncture deviation cannot be revised owing to needle point exposes；2, (as encountering blood vessel) is easily accidentally injured when piercing process runs into other tissue that can not puncture；3, needle point is exposed to easily stab operator, causes unexpected infection；4, blind paracentesis depth is not easily grasped when wearing.

Summary of the invention

Present invention aim to overcome that above-mentioned the deficiencies in the prior art provide a kind of puncture needle, this puncture needle can control nook closing member stretching in sleeve, it is achieved the control to nook closing member, moreover it is possible to avoid nook closing member needle point to expose.

The object of the invention employed technical scheme comprise that a kind of puncture needle, and including sleeve, nook closing member, it also includes:

Handle, this handle is connected to the top of sleeve, and described handle includes fixing parts, and fixing parts are provided with two extension bars；The first half of described fixing parts has the first through hole, and the latter half has the second through hole；First through hole and the connection of the second through hole；The aperture of the second through hole is the aperture of sleeve, and the aperture of the first through hole is more than the aperture of the second through hole；Nook closing member passes in sleeve from the first through hole, the second through hole successively；

Spring, is located in the first through hole, between the inwall of nook closing member and the first through hole；

Push rod, including the body of rod and the handle being located at body of rod upper end, the described body of rod is placed in described first through hole, and with described spring contact；Described body of rod lower end has groove, and the top of described nook closing member is stuck in groove.

Further, sleeve ring for fixing it is additionally provided with between described handle and sleeve.

In technique scheme, also including Anti-stabbing device, the upper end of described Anti-stabbing device is fixing with handle to be connected, and is flexibly connected between the lower end of Anti-stabbing device 5 with sleeve ring for fixing；Two shell fragments for clamping nook closing member it are provided with inside described Anti-stabbing device；Described nook closing member is provided with draw-in groove near the position of needle point, and when nook closing member is extracted out from sleeve pipe, shell fragment snaps in draw-in groove.The invention have the advantages that

1, the motion of nook closing member is controlled by handle, spring and push rod, it is achieved the control flexible to nook closing member.

When 2, being separated with sleeve by nook closing member, the shell fragment of Anti-stabbing device snaps in the draw-in groove on needle point, thus entangling needle point, it is to avoid needle pricks operator.

Accompanying drawing explanation

Fig. 1 be puncture needle of the present invention the first through hole in unsprung structural representation.

Fig. 2 be puncture needle of the present invention the first through hole in pacify spring-loaded structural representation.

Fig. 3 is the enlarged drawing of A in Fig. 1 and Fig. 2.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

As shown in Figure 1, puncture needle of the present invention includes sleeve 7, nook closing member 2, handle 4, push rod 1 and sleeve ring for fixing 6, sleeve ring for fixing 6 is located at the top of sleeve 7, the bottom of handle 4 is fixedly connected with Anti-stabbing device 5, for being flexibly connected between the lower end of Anti-stabbing device 5 with sleeve ring for fixing 6, for instance clamping or threaded.Anti-stabbing device 5 includes two shell fragments 5.1 for clamping nook closing member 2.

Handle 4 includes fixing parts 4.1, and fixing parts 4.1 are provided with two outwardly directed extension bars 4.2；Fixing the first half within parts 4.1 has the first through hole 4.3, and the latter half has the second through hole 4.4；First through hole 4.3 connects with the second through hole 4.4.The aperture that aperture is sleeve 7 of the second through hole 4.4, the aperture of the first through hole 4.3 is more than the aperture of the second through hole 4.4；Nook closing member 2 passes from first through hole the 4.3, second through hole 4.4 successively.

It is provided with spring 3 in first through hole 4.3, and spring 3 is between nook closing member 2 and the inwall of the first through hole 4.3, as shown in Figure 2.

Push rod 1 includes the body of rod 1.2 and is located at the handle 1.1 of the body of rod 1.2 upper end, and the lower end of the body of rod 1.2 is placed in described first through hole 4.3, and contacts with spring 3；The bottom of the body of rod 1.2 has groove, and the top of nook closing member is positioned at groove.

As it is shown on figure 3, nook closing member 2 is provided with draw-in groove 8 near the position of needle point.

When using the present invention, may choose whether with needle point Anti-stabbing device according to using position difference.

1, when simple hypodermic punctures, forefinger and middle finger are caught on the extension bar 4.2 of handle 4, the handle 1.1 of lower push-rod 1 is pressed with thumb, now needle point exposes (push rod without pressing needle point will not expose) and now punctures, often puncture certain distance and unclamp push rod 1, now because of needle tip retracts, as penetrated cortex forward impelling meeting drag minimization, because in needle point retraction sleeve pipe, so other tissue will not be accidentally injured, as very big in also do not penetrated cortex then resistance, now continue down to puncture by lower push-rod until unclamping push rod after subcutaneous, take out puncture needle, carry out other operations such as putting pipe.

null2、When the guiding carrying out various position punctures, forefinger and middle finger are caught on handle，The handle 1.1 of lower push-rod 1 is pressed with thumb，Now needle point exposes (push rod without pressing needle point will not expose) and now punctures，Under B ultrasonic etc. guides, inspection sees that whether Needle localization and puncturing tissue be errorless，Push rod retraction needle point can be unclamped if desired，Carry out visiting thorn with needle guard，Because so other tissue will not be accidentally injured in needle point retraction needle guard，Confirming that errorless rear continuation punctures to predetermined position，Now from sleeve ring for fixing 6, sleeve 7 and nook closing member 2 are separated，It is located at the shell fragment in Anti-stabbing device 5 when nook closing member 2 is extracted out and can be stuck in card grain 8 places of needle point，Thus clamping nook closing member 2，Now，Anti-stabbing device 5 and sleeve ring for fixing 6 are opened，When Anti-stabbing device 5 is prevented from the nook closing member 2 extracted out，The needle point accidental injury to operator，Now puncture needle sleeve 7 is only left at internal，Can along sleeve 7 to being built into seal wire，Continue follow-up pipe etc. of putting to operate.

Claims

1. a puncture needle, including sleeve, nook closing member, it is characterised in that also include:

2. puncture needle according to claim 1, it is characterised in that: it is additionally provided with sleeve ring for fixing between described handle and sleeve.

3. puncture needle according to claim 2, it is characterised in that: also including Anti-stabbing device, the upper end of described Anti-stabbing device is fixing with handle to be connected, and is flexibly connected between the lower end of Anti-stabbing device 5 with sleeve ring for fixing；Two shell fragments for clamping nook closing member it are provided with inside described Anti-stabbing device；Described nook closing member is provided with draw-in groove near the position of needle point, and when nook closing member is extracted out from sleeve pipe, shell fragment snaps in draw-in groove.