CN2899718Y

CN2899718Y - Circular rotary type marrow puncture needle

Info

Publication number: CN2899718Y
Application number: CN 200620073059
Authority: CN
Inventors: 沈义祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-26
Filing date: 2006-04-26
Publication date: 2007-05-16
Anticipated expiration: 2016-04-26

Abstract

The utility model discloses a revolving bone marrow puncturing needle in the field of medical equipment, which comprises a needle core and a needle tube that are matching with each other. The needle tube is axially fixed on a needle tube stand provided with threads, the needle tube is arranged in a through way in the center of a wing-like handle; the needle core is arranged on a needle core stand, which is fixed at the center of a rotary stand, the perimeter of which is provided with two symmetric lobes. On the handle, an opening for accommodating the rotary stand is provided. The rims at both sides of the opening are provided with peripheral recesses matching with the lobes. The needle core passes axially the needle tube stand and stretches into the end of the needle tube. When the lobes are inserted into the peripheral recesses, the needle core and the needle tube are relatively fixed in axial direction, and bone marrow puncturing can be carried out easily; when the lobes are withdrawn from the peripheral recesses, the needle core and the needle tube can be separated, the needle core can be taken out, and is connected with a suction device through the threads on the needle tube stand, now marrow can be extracted or medicine can be injected. The utility model allows to fix well the needle core and the needle tube during puncturing, enables easier puncturing, and allows better bone marrow puncturing.

Description

Encircle rotatable marrow puncture needle

Technical field

This utility model relates to a kind of medical apparatus and instruments, particularly a kind of utensil of the bone marrow that is used to puncture.

Background technology

In the prior art, there is a kind of patent No. to be: the marrow puncture needle of ZL93205730.6, mainly form by needle tubing, depth adjustment bar, needle tubing seat, nook closing member, handle, syringe, nook closing member and needle tubing match, the needle tubing seat that needle tubing and tail end are provided with screw thread axially fixes, the needle tubing seat runs through the handle center that is arranged on wing, the bellmouth and the syringe front end at the center, rear end of handle are connected as a single entity, nook closing member is penetrated through to the needle tubing top by the hole of plunger afterbody, the nook closing member afterbody is provided with handle, and the end of described needle tubing is an angular cut.Its weak point is: this marrow puncture needle complex structure, make difficulty, and nook closing member and needle tubing can not be well secured in the piercing process, are not easy to afterburning puncture; Because needle tubing is an angular cut, in piercing process, syringe needle is subjected to lateral forces, and sideslip causes puncture position inaccurate easily.

The utility model content

The purpose of this utility model provides the rotatable marrow puncture needle of ring, makes nook closing member and needle tubing energy in piercing process well secured, and it is convenient to puncture.

The purpose of this utility model is achieved in that the rotatable marrow puncture needle of ring, comprise the nook closing member and the needle tubing that match, the needle tubing seat that needle tubing and tail end are provided with screw thread axially fixes, the needle tubing seat runs through the handle center that is arranged on wing, described nook closing member is arranged on the needle core base, needle core base is fixed on the center of a rotating seat, the rotating seat periphery is arranged with two projections, handle is provided with the opening that can hold rotating seat, the edge of opening both sides is respectively equipped with the circumferential recess that matches with projection, and nook closing member axially passes the end that the needle tubing seat extend into needle tubing.

This utility model when work, by rotation and push rotating seat, can realize the fixing of nook closing member and needle tubing and separate that when projection snapped in the circumferential recess, the axial relative fixed of nook closing member and needle tubing can not be moved, and can carry out bone marrow aspiration easily; By the backward rotation rotating seat, make projection withdraw from circumferential recess, needle tubing assembly and nook closing member assembly are separated, in piercing process, can take out nook closing member, be connected with aspirator such as syringe etc. by the screw thread on the needle tubing seat, can extract bone marrow, also can be in bone marrow liquid medicine injection.This utility model can make nook closing member and needle tubing energy in piercing process well secured, and it is convenient to puncture, and can carry out bone marrow aspiration better.

For making puncture accurately, reliably, to be convenient to annular and to rotate, described needle tubing and nook closing member end are the SANLING taper that matches.On the one hand, good cooperation can form level and smooth end surface, reduces the resistance in the piercing process, on the other hand, the osseous tissue of human body can be cancelled out each other to the side-thrust that each conical surface of nook closing member produces, and can not cause the problem of puncture sideslip, be convenient to annular and rotate, can make puncture more accurate.

Nook closing member can smooth-goingly enter and withdraw from the puncture procedure process in order to make, and described needle core base both sides are provided with the flank that can screw in the screw thread on the needle tubing seat.Cooperation between flank and the screw thread makes nook closing member have better guide effect, can enter to a direction rotation, just can withdraw to another direction rotation, has avoided nook closing member to cause bigger damage in the same position rotation.

Description of drawings

Fig. 1 is this utility model structural representation.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is that Figure 1A is to partial view.

Fig. 4 is the partial enlarged drawing of B among Fig. 1.

Fig. 5 moves back to the interior structural representation of needle tubing for this utility model nook closing member.

Wherein, 1 handle, 2 flanks, 3 rotating seats, 4 needle core bases, 5 needle tubing seats, 6 nook closing members, 7 needle tubings, 8 projections, 9 openings, 10 circumferential recess.

The specific embodiment

As figure, for encircling rotatable marrow puncture needle, comprise the nook closing member 6 and the needle tubing 7 that match, needle tubing 7 axially fixes with the needle tubing seat 5 that tail end is provided with screw thread, needle tubing seat 5 runs through handle 1 center that is arranged on wing, nook closing member 6 is arranged on the needle core base 4, needle core base 4 is fixed on the center of a rotating seat 3, rotating seat 3 peripheries are arranged with two projections 8, handle 1 is provided with the opening 9 that can hold rotating seat 3, the edge of opening 9 both sides is respectively equipped with the circumferential recess 10 that matches with projection 8, and nook closing member 6 axially passes the end that needle tubing seat 5 extend into needle tubing 7.Needle tubing 7 and nook closing member 6 ends are the SANLING taper that matches, and can make puncture accurately, reliably, can not cause the problem of puncture sideslip; Described needle core base 4 both sides are provided with the flank 2 that can screw in the screw thread on the needle tubing seat 5, can make that nook closing member 6 can smooth-goingly enter and withdraw from the puncture procedure process.

During work, by rotation and push rotating seat 3, can realize the fixing of nook closing member 6 and needle tubing 7 and separate that when projection 8 snapped in the circumferential recess 10, nook closing member 6 and needle tubing 7 axial relative fixed can not be moved, and can carry out bone marrow aspiration easily; By backward rotation rotating seat 3, make projection 8 withdraw from circumferential recess 10, needle tubing 7 assemblies and nook closing member 6 assemblies are separated, in piercing process, can take out nook closing member 6, be connected with aspirator such as syringe etc. by the screw thread on the needle tubing seat 5, can extract bone marrow, also can be in bone marrow liquid medicine injection.

Claims

1, encircles rotatable marrow puncture needle, comprise the nook closing member and the needle tubing that match, the needle tubing seat that needle tubing and tail end are provided with screw thread axially fixes, the needle tubing seat runs through the handle center that is arranged on wing, it is characterized in that: described nook closing member is arranged on the needle core base, needle core base is fixed on the center of a rotating seat, the rotating seat periphery is arranged with two projections, handle is provided with the opening that can hold rotating seat, the edge of opening both sides is respectively equipped with the circumferential recess that matches with projection, and nook closing member axially passes the end that the needle tubing seat extend into needle tubing.

2, the rotatable marrow puncture needle of ring according to claim 1 is characterized in that: needle tubing and nook closing member end are the SANLING taper that matches.

3, the rotatable marrow puncture needle of ring according to claim 1 is characterized in that: described needle core base both sides are provided with the flank that can screw in screw thread on the needle tubing seat.