CN200942112Y

CN200942112Y - Marrow puncture needle

Info

Publication number: CN200942112Y
Application number: CN 200620132798
Authority: CN
Inventors: 王璇; 尹颖; 张慧莹; 王伟; 崔海朋
Original assignee: 王璇
Priority date: 2006-09-04
Filing date: 2006-09-04
Publication date: 2007-09-05
Anticipated expiration: 2016-09-04

Abstract

The utility model relates to a medical device, in particular to a marrow puncture needle for collecting the spinal fluid. In the course of bone marrow puncture, the core of the puncture needle does not slip and the needle does not easily block. The puncture needle is characterized by a core limit button fixed on the core handle, corresponded by a horizontal U-type limit slip slot on the needle handle 3. The side slot of the limit slip slot does not protrude. The puncture needle is simple in structure and easy to use. Elimination of the possibility of needle block due to needle core slip significantly improves the rate of success of puncture and reduces the pain of patients.

Description

Marrow puncture needle

Affiliated technical field

This utility model relates to a kind of medical apparatus and instruments, particularly a kind of gather bone marrow fluid, have a marrow puncture needle that prevents nook closing member slippage function.

Background technology

The diagnosis of hematopathy, reticuloendothelial system disease, multiple myeloma, some infectious disease carries out the bone marrow fluid antibacterial culturing or smear is looked into pathogen, and the method that must utilize the bone marrow marrow puncture needle to draw bone marrow by the bone puncture is finished.Gather bone marrow fluid at present clinically, the marrow puncture needle of Cai Yonging comprises syringe needle, backshank, needle handle, stop and nook closing member always.Find that in secular clinical position its nook closing member passes slippage easily in the journey at bone, nook closing member is contaminated, causes the bone marrow aspiration syringe needle easily to be blocked by sclerotin, thus the failure that causes bone to be worn.

Summary of the invention

The purpose of this utility model provides a kind of preventing and passes the marrow puncture needle nook closing member slippage, the difficult obstruction of syringe needle in the journey at bone.

The purpose of this utility model is achieved through the following technical solutions: a kind of marrow puncture needle, it comprises syringe needle 8, needle handle 3, and the holder 5 that can be threaded and stop nut 4 and the nook closing member 7 that can be set in the syringe needle 8 with needle handle 3 lower ends, the rear end of nook closing member 7 installs needle core handle 1, the sidewall of syringe needle 8 is provided with side opening 10, front end at holder 5 is fixedly connected with cyclic crossette 6, be characterized in: be fixed with the spacing button 2 of nook closing member on the described needle core handle 1, offer " side fall U " the type nook closing member limit that matches with the spacing button 2 of nook closing member and take off groove 9 on needle handle 3, the nook closing member limit is taken off groove 9 inner side slots and is not worn out.

The utility model has the advantages that: on the basis of original marrow puncture needle, set up spacing button of nook closing member and nook closing member limit and taken off groove, simple in structure, easy to use, can prevent that the nook closing member slippage causes syringe needle to block in the bone marrow aspiration process, improve the success rate of puncture greatly, can reduce patient's misery.

Description of drawings

Fig. 1 is the cross-sectional view of a kind of embodiment of this utility model;

Fig. 2 is the structural representation of a kind of embodiment of this utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawing illustrated embodiment.As depicted in figs. 1 and 2, the applicant has implemented a kind of marrow puncture needle, it comprises syringe needle 8, needle handle 3, and the holder 5 that can be threaded and stop nut 4 and the nook closing member 7 that can be set in the syringe needle 8 with needle handle 3 lower ends, the rear end of nook closing member 7 installs needle core handle 1, the sidewall of syringe needle 8 is provided with side opening 10, front end at holder 5 is fixedly connected with cyclic crossette 6, be fixed with the spacing button 2 of nook closing member on the needle core handle 1, on needle handle 3, offer " side fall U " the type nook closing member limit that matches with the spacing button 2 of nook closing member and take off groove 9, nook closing member limit is taken off groove 9 inner side slots and is not worn out, and makes the spacing button 2 of nook closing member pass in the journey about not meeting at bone like this, move backward.

In order to guarantee result of use, when pushing the nook closing member limit, takes off in the groove 9 when spacing by the spacing button 2 of nook closing member, and nook closing member 7 front end inclined-planes and syringe needle 8 bevel angles are consistent.

During use, earlier choose paracentesis depth, piercing needle 8 is passed periosteum enter in the medullary cavity, the spacing button 2 of nook closing member is released " side fall U " type nook closing member limit and taken off in the groove 9 by the site of puncture, extract nook closing member 7 out, extract bone marrow with the apical pore and the side opening on the sidewall 10 of injector for medical purpose then through syringe needle 8 tips.

Claims

1, a kind of marrow puncture needle, it comprises syringe needle (8), needle handle (3), and the holder (5) and the stop nut (4) that can be threaded and can be set in nook closing member (7) in the syringe needle (8) with needle handle (3) lower end, the rear end of nook closing member (7) installs needle core handle (1), the sidewall of syringe needle (8) is provided with side opening (10), front end at holder (5) is fixedly connected with cyclic crossette (6), it is characterized in that: be fixed with the spacing button of nook closing member (2) on the described needle core handle (1), offer " side fall U " the type nook closing member limit that matches with the spacing button of nook closing member (2) and take off groove (9) on needle handle (3), the nook closing member limit is taken off groove (9) inner side slot and is not worn out.