CN2162215Y

CN2162215Y - Marrow puncture needle

Info

Publication number: CN2162215Y
Application number: CN 93205730
Authority: CN
Inventors: 王瑞; 林涛
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-19
Filing date: 1993-03-19
Publication date: 1994-04-20
Anticipated expiration: 2003-03-19

Abstract

The utility model relates to a marrow puncture needle, belonging to the field of medical apparatus and instruments and composed of a bone puncture needle-head tube, a handrail, a depth adjustment rod, a fastening screw rod, a threaded rod, a needle core, a needle core handle, an injector external tub and an injector internal body with an internal tube. The utility model is used in the surgical apparatus for the bone marrow transplantation and the bone marrow detection in the blood department. The marrow puncture needle is composed of two parts which are a bone puncture needle with the handle and an injector with a needle core; the front end of the injector is inserted in a cone-shaped hole of the handle of the bone puncture needle, and then, the needle core is threaded in the needle body through a tail tube of the injector. After the bone puncture needle is threaded and gets to the target position, the needle core is pulled out and gets to a proper position; the injector is used for extracting the bone marrow. In the process of puncturing, the handrail can be used for helping to achieve the correct applied force; thus, the contamination opportunity in the process of repeat operation can be reduced to the minimization, the program can be simplified, and the pain of the person who needs to be detected can be reduced.

Description

Marrow puncture needle

This utility model belongs to medical instruments field, is the operating theater instruments that the blood training is used for bone marrow transplantation and bone marrow check.

Be used for the marrow puncture needle that the check of bone marrow transplantation and bone marrow is adopted at present, since there is not handrail, the one, do not use power, the 2nd, the patient is difficult for grasping the inserting needle power thrusts in piercing process, the distortion of marrow puncture needle direction deflection or syringe needle often takes place, and causes puncture failure.Existing marrow puncture needle need be finished when marrow aspiration and transfer to nook closing member and settle two steps of syringe, and its shortcoming has: 1, operation need not insert often smoothly, transfer to nook closing member repeatedly, and the nook closing member chance of carrying disease germs is increased.2, settle injector operations process complexity, particularly when the patient mismatch or mismate and subcutaneous tissue when too thick operation easier bigger, more how to bring misery to the patient.

This utility model has been avoided above-mentioned shortcoming of the prior art, designs a kind of marrow puncture needle that handrail, syringe, nook closing member are become one that has.

This utility model is made up of syringe needle tube, depth adjustment bar, fastening nut, threaded rod, nook closing member, nook closing member handle, plunger, syringe outer tube.It is characterized in that: the threaded rod of handrail front end and embedded syringe needle tube is connected the back and is connected as a single entity with depth adjustment bar, fastening nut, the bellmouth and the syringe front end at the center, rear end of handrail are connected as a single entity, and nook closing member is penetrated through to the syringe needle tube top by the hole of plunger afterbody.Before the art with the marrow puncture needle of the Armrest that disinfects, can the thread a needle disposable syringe of core of nook closing member and inner core is become one, get a grip on the rail with hands during use and thrust patient's bone, because handrail is arranged, can correctly exert oneself when thrusting bone, make syringe needle be difficult for the position that deflection will puncture, in the time of in syringe needle thrusts bone, dial-out penetrates the nook closing member of plunger to the appropriate location, pulling plunger marrow aspiration, blocking syringe needle tube as bone marrow can dredge the nook closing member insertion again, again nook closing member is pushed the appropriate location after the mediation, pulling plunger marrow aspiration has so just been avoided existing marrow puncture needle that nook closing member is transferred to microbiological contamination chance in the insertion process again, and can have been simplified working procedure, raise the efficiency, reduce the misery of surgical patient.

This utility model is compared with prior art:

1, numerous and diverse operation can be finished before art and to prepare.

2, make the opportunities for contamination in the operating process reduce to minimum degree.

3, this utility model has increased handrail and can improve accuracy and correct the exerting oneself that syringe needle penetrates bone.

This utility model structural representation:

By figure explanation a kind of most preferred embodiment of the present utility model.This utility model is by syringe needle tube 1; 2, handrail; 3, depth adjustment bar; 4, fastening nut; 5, threaded rod; 6, nook closing member; 7, nook closing member handle; 8, syringe outer tube; 9, plunger is formed.Syringe is made by plastics and rubber, and remainder can be made with wear-resistant, corrosion-resistant, resistant to elevated temperatures metal material.Syringe needle tube, nook closing member are made by rustless steel in the present embodiment, and syringe forms with the medical plastic compacting, and the plunger head is made with rubber, and remaining part is made for pyrite chromium plating.2 and 5 by spiral shell link connect the back fix with soldering, hole, one garden is arranged in 9, and the syringe front end inserts the bellmouth of 2 rear ends, holds 7 and makes 6 to insert from the hole of 9 afterbodys, in in 9 in the pipe to 1, and 7 groove and 2 groove are aligned, catch on the 2 usefulness palms of the hand with middle finger and forefinger and withstand 7, when marrow puncture needle to the target location, pull out 6 to the appropriate location by 7, thereafter spur 9 and extract bone marrow,, then promote 7 and make 6 to enter the bone marrow aspiration needle body once more if do not see bone marrow or 1 blocked.Repeat above step, till extracting bone marrow out.

Claims

1, a kind of marrow puncture needle, form by syringe needle tube, depth adjustment bar, fastening nut, threaded rod, nook closing member, nook closing member handle, plunger, syringe outer tube, it is characterized in that: the threaded rod of handrail front end and embedded syringe needle tube is connected the back and fuses with depth adjustment bar, fastening nut, the bellmouth and the syringe front end at the center, rear end of handrail are connected as a single entity, and nook closing member is penetrated through to the syringe needle tube top by the hole of plunger afterbody.