CN203468647U

CN203468647U - Bone marrow puncture needle

Info

Publication number: CN203468647U
Application number: CN201320457481.XU
Authority: CN
Inventors: 宋春华
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-22
Filing date: 2013-07-22
Publication date: 2014-03-12
Anticipated expiration: 2023-07-22

Abstract

The utility model belongs to a medical instrument, and discloses a bone marrow puncture needle which comprises a cannula and a core needle located in a cavity of the cannula, wherein a handle tube is fixedly connected to the tail end of the cannula, and a piston tube is in thread sealing connection with the rear end of the handle tube; and the tail end of the core needle is fixedly connected with a pull rod, and a tapered piston is fixed in the connection position of the pull rod and the core needle. The bone marrow puncture needle is simple in structure and convenient and fast to operate, and operations of drawing out the core needle and extracting a marrow liquid can be finished once in the closed environment and the sterile environment, so that bacterial infection is avoided.

Description

A kind of marrow puncture needle

Technical field

This utility model relates to medical instruments field, relates in particular to a kind of marrow puncture needle.

Background technology

Bone marrow puncture is to take a kind of conventional diagnostic techniques of bone marrow fluid, significant to various hemopathic Differential Diagnosis and follow up etc.Conventional marrow puncture needle consists of sleeve pipe, nook closing member conventionally at present, after puncturing successfully, need nook closing member to take out, connect syringe and can extract marrow liquid, operation is trouble comparatively, and because taking out rear sleeve, nook closing member communicates with the external world, be easy to cause germ contamination, and cause new disease, have larger potential safety hazard.

Utility model content

For overcoming above-mentioned technical problem, it is a kind of simple in structure, easy to operate, quick that this utility model provides, and adopts closed design, can avoid antibacterial to enter the marrow puncture needle of sleeve pipe.

For realizing above-mentioned technical purpose, this utility model adopts following scheme: a kind of marrow puncture needle, comprise sleeve pipe and be positioned at its intraluminal nook closing member, it is characterized in that: described sleeve pipe tail end is provided with the handle pipe being fixedly connected with, described handle pipe rear end is provided with the piston tube that thread seal connects; Described nook closing member tail end is fixedly connected with a pull bar, and the tail end of pull bar is provided with hands handle; Described pull bar and nook closing member junction are fixed with a tapered piston that can be sealed and matched with piston tube, and the tip of tapered piston is positioned at rear end.

The utlity model has following beneficial effect: after puncturing successfully, by pull bar, nook closing member is shifted out to sleeve pipe, while continuing to pull back pull bar, tapered piston enters in piston tube, when it moves backward, in the tube chamber of its front side, produce negative pressure, can smoothly marrow liquid be extracted to handle pipe, after taking-up puncture needle, handle pipe is separated with piston tube, then marrow liquid can be taken out, in order to chemical examination.It is simple in structure, convenient to operation, can disposablely complete and extract nook closing member out, extract the operation of marrow liquid, and carry out under enclosed environment, guarantees to carry out under gnotobasis, avoids antibacterial to infect.

Accompanying drawing explanation

Fig. 1 is this utility model structural representation.

In figure, 1, handle, 2, piston tube, 3, pull bar, 4, handle pipe, 5, tapered piston, 6, sleeve pipe, 7, nook closing member.

The specific embodiment

Shown in accompanying drawing 1, in sleeve pipe 6, be provided with nook closing member 7; Described sleeve pipe 6 tail ends are provided with the handle pipe 4 being fixedly connected with, and described handle pipe 4 rear ends are provided with the piston tube 2 that thread seal connects; Described nook closing member 7 tail ends are fixedly connected with a pull bar 3, and the tail end of pull bar 3 is provided with handle 1; Described pull bar 3 is fixed with a tapered piston 5 that can be sealed and matched with piston tube 2 with nook closing member 7 junctions, and the tip of tapered piston 5 is positioned at rear end.

Claims

1. a marrow puncture needle, comprises sleeve pipe and is positioned at its intraluminal nook closing member, it is characterized in that: described sleeve pipe tail end is provided with the handle pipe being fixedly connected with, and described handle pipe rear end is provided with the piston tube that thread seal connects; Described nook closing member tail end is fixedly connected with a pull bar, and the tail end of pull bar is provided with hands handle; Described pull bar and nook closing member junction are fixed with a tapered piston that can be sealed and matched with piston tube, and the tip of tapered piston is positioned at rear end.