CN201510602U

CN201510602U - Steel needle self-shrinking syringe tube with two-step shape-destroying inner core

Info

Publication number: CN201510602U
Application number: CN2009203081344U
Authority: CN
Inventors: 李华美
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-17
Filing date: 2009-08-17
Publication date: 2010-06-23
Anticipated expiration: 2019-08-17

Abstract

The utility model discloses a steel needle self-shrinking syringe tube with a two-step shape destroying inner core. The syringe tube comprises a sleeve, a hollow inner core mounted in the sleeve, a connector mounted at the head part of the sleeve, a steel needle used for puncturing, and a needle sleeve of the steel needle; a sealing piece is arranged at the upper end of the inner core; the connector is provided with a connector sealing piece; an easy-breakage belt is arranged on the top surface of the inner core and at the connection part of the upper top surface and the lower sunken surface of the inner core; the sealing piece at the upper end of the inner core covers the upper top surface; and a compressible cavity is formed between the sealing piece and the lower sunken surface. The syringe tube adopts a two-step shape destroying manner, so as to not only ensure complete medical solution injection and syringe tube shape destroying, but also solve the problem of medical solution residual and impossibility of vein injection; and furthermore, the syringe tube has the characteristics of simple structure, convenient operation and safety.

Description

Has the unmake steel needle self-shrinking syringe of inner core of two steps

Technical field

This utility model relates to a kind of medical supplies, is specially to have the unmake steel needle self-shrinking syringe of inner core of two steps.

Background technology

Steel needle self-shrinking syringe utilizes elastic wire telescopic action or negative pressure resorption to reach draw point from contracting purpose, has the advantage of self-destruction and safety, is a trend of development of having an injection future.But before injecting liquid drug was finished, the cavity of sealing medicinal liquid was damaged, will cause medicinal liquid residual, perhaps can cause blood reflux stream intravenous the time, had certain drawback.

The utility model content

At the problems referred to above, the purpose of this utility model is to provide has the unmake steel needle self-shrinking syringe of inner core of two steps, have simple in structure, easy to operate, the characteristics of safety.

For achieving the above object, be achieved through the following technical solutions:

Has the unmake steel needle self-shrinking syringe of inner core of two steps, include a sleeve, be installed in hollow inner core, the joint that is installed in sleeve head, the draw point that is used to puncture and needle guard thereof in the sleeve, the inner core upper end has sealing member, joint has splice seal, it is characterized in that: the end face of inner core has and easily splits band, described easily splitting is with last end face and the sagging face junction that is arranged on inner core, and end seal covers end face on the inner core, has compressible cavity between sealing member and the sagging face.

Core head has bayonet socket in described.

Described upper end of joint has the pressure texture of elasticity of compression steel wire, there are at least two dops the lower end, gapped between the dop, there is jut at the edge of dop, jut engages mutually with telescopic screens step, and the dop lower end has and can cause after with the inner core bayonet socket inserting being closed dop cohesion and then cause jut to break away from the extension of sleeve screens step.

The described band that easily splits is annular, and its thinnest part thickness δ scope is between 0.2～0.3mm.

Described sleeve lining upper end has be used for the preceding screens step of screens inner core when sliding after inner core is subjected to elastic wire power.

Described sleeve lining lower end has after inner core is subjected to elastic wire power and to be used for the back screens step of screens inner core when sliding, and inner core lower end one is extended projection and matched with the telescopic step of screens afterwards.

Described joint is made up of joint body and interchangeable fitting sleeve, and wherein draw point is connected on the interchangeable fitting sleeve.

Described sleeve top has and is used for the card neck of screens elastic wire, and card neck and sleeve are one-body molded.

Described sleeve head is socketed with a fixed cover, has on this fixed cover to be used for the card neck of screens elastic wire.

The core head top plug has the interior plug that has bayonet socket in described, and in the core head, contact surface formed and easily splits band between Nei Sai and the interior core head in interior plug was fixed on by extruding force, frictional force or cohesive force.

Adopt the steel needle self-shrinking syringe of said structure, its core arrangement will be unmake and will be divided into for two steps: the first step, shift the inner core sealing member onto the sleeve bottom surface and make medicinal liquid throw human body fully into, this moment, joint got loose from sleeve screens step, the tube of having an injection can't reuse to be realized unmaking, but easily splitting band does not tear as yet, can not occur medicinal liquid from easily split the band tear place and backflow or vein when having an injection venous blood backflow from easily splitting the band tear place, solved the problem that the ubiquitous medicinal liquid of other steel needle self-shrinking syringes is residual and can't vein have an injection; After second step, draw point are extracted human body, press inner core before continuing, the compression compressible space is torn simultaneously and is easily split band, realizes that draw point from contracting, thoroughly unmakes.The two step patterns of unmaking have guaranteed that promptly medicinal liquid played the tube of having an injection simultaneously and unmake, solved again medicinal liquid residual with the problem of can't vein having an injection.

Description of drawings

Fig. 1 is this utility model integral installation distribution structure sketch map;

Fig. 2 is a core arrangement sketch map of the present utility model;

Fig. 3 is a joint design sketch map of the present utility model

Fig. 4 is the structural representation at A indication position among Fig. 2;

The structural representation that Fig. 5 unmakes for this utility model first step;

Fig. 6 tears for this utility model easily splits band, promptly second goes on foot the structural representation that unmakes;

Fig. 7 is this utility model structural representation that finishes that unmakes;

Fig. 8 is a screens structural representation before this utility model sleeve;

Fig. 9 is a screens structural representation behind this utility model sleeve;

Figure 10 is the embodiment sketch map of the interchangeable fitting sleeve of this utility model;

Figure 11 is for being provided with the embodiment sketch map of card neck by fixed cover on this utility model sleeve;

Plug structure sketch map in Figure 12 is of the present utility model.

The specific embodiment

The utility model will be further described below in conjunction with accompanying drawing.

As Fig. 1,2, shown in 3, has the unmake steel needle self-shrinking syringe of inner core of two steps, include a sleeve 1, be installed in the hollow inner core 2 in the sleeve 1, be installed in the joint 3 of sleeve 1 head, draw point 4 that is used to puncture and needle guard 5 thereof, inner core 2 upper ends have sealing member 21, joint 3 has splice seal 31, there is the pressure texture 32 of elasticity of compression steel wire 6 joint 3 upper ends, joint 3 lower ends have two dops 33 at least, between the dop 33 gapped 34, there is jut 331 at the edge of dop 33, jut 331 engages mutually with the screens step 11 of sleeve 1, dop 33 has extension 332, extension 332 has can reduce the tilting section 333 of inserting resistance and the flat segments 334 that prevents slotting depth error, inner core 2 heads have bayonet socket 22, easily split the last end face 25 and sagging face 26 junctions that are arranged on inner core 2 with 23, end seal 21 covers end face 25 on the inner core 2, has compressible cavity 27 between sealing member 21 and the sagging face 26, sleeve 1 top has and is used for the card neck 12 of screens elastic wire 6, and elastic wire 6 compression shapes are stuck between sleeve 1 head and the joint 3.As shown in Figure 4, easily split and be with 23, be annular, its thinnest part thickness δ scope is between 0.2～0.3mm, is torn under external force easily.

Above core arrangement will be unmake and will be divided into for two steps: as shown in Figure 5, the first step, shifting inner core 2 and sealing member 21 onto sleeve 1 bottom surface makes medicinal liquid throw human body fully into, this moment, the jut 331 of joint 3 got loose from sleeve screens step 11, elastic wire 6 stretches spacing releasing, the tube of having an injection can't reuse the realization first step and unmake, be with 23 not tear as yet but easily split, can not occur medicinal liquid from easily split the band tear place and backflow or vein when having an injection venous blood backflow from easily splitting the band tear place, solved the problem that the ubiquitous medicinal liquid of other steel needle self-shrinking syringes is residual and can't vein have an injection; Second the step, shown in Fig. 6,7, have an injection finish draw point and extract human body after, continue to push away inner core 2, compress compressible cavity 27 tear simultaneously easily split with 23 back elastic wires 6 stretch drive whole elastic wire 6, draw point 4, joints 3 and be torn after the inner core bayonet socket part 22 peeled off to the hollow reservoir 24 of inner core 2 from contracting until fully, after work is finished, unmake.The two step patterns of unmaking have guaranteed that promptly medicinal liquid played the tube of having an injection simultaneously and unmake, solved again medicinal liquid residual with the problem of can't vein having an injection.

As shown in Figure 8, there is the preceding screens step 13 that is used for engaging inner core 2 after inner core 2 is subjected to elastic wire 6 stretching forces when sliding sleeve 1 inwall upper end.As shown in Figure 9, there is the back screens step 14 that is used for engaging inner core 2 after inner core 2 is subjected to elastic wire 6 stretching forces when sliding sleeve 1 inwall lower end, and inner core 2 lower ends one are extended projection 28 and matched with the back screens step 14 of sleeve 1.

As shown in figure 10, joint 3 is made up of joint body 35 and interchangeable fitting sleeve 36, and wherein draw point 4 is connected on the interchangeable fitting sleeve 36.

As shown in figure 11, sleeve 1 head is socketed with a fixed cover 15, has on this fixed cover 15 to be used for the card neck 12 of screens elastic wire 6.

As shown in figure 12, be plugged with the interior plug 29 that has bayonet socket 22 on inner core 2 heads, wherein in plug 29 be fixed in inner core 2 heads by extruding force, frictional force or cohesive force, between interior plug 29 and inner core 2 heads contact surface form easily split be with 23 '.Easily split under external force be with 23 ' tear apart after can being extruded.

Those of ordinary skill in the art should be realized that, above embodiment just is used for illustrating the present invention, but not, as long as in essence scope of design of the present invention, all will drop in the claim scope of the present invention variation or the modification of above embodiment as limitation of the invention.

Claims

1. has the unmake steel needle self-shrinking syringe of inner core of two steps, include a sleeve, be installed in hollow inner core, the joint that is installed in sleeve head, the draw point that is used to puncture and needle guard thereof in the sleeve, the inner core upper end has sealing member, joint has splice seal, it is characterized in that: the end face of inner core has and easily splits band, described easily splitting is with last end face and the sagging face junction that is arranged on inner core, and end seal covers end face on the inner core, has compressible cavity between sealing member and the sagging face.

2. as claimed in claim 1 have a unmake steel needle self-shrinking syringe of inner core of two steps, and it is characterized in that: core head has bayonet socket in described.

3. as claimed in claim 2 have a unmake steel needle self-shrinking syringe of inner core of two steps, it is characterized in that: described upper end of joint has the pressure texture of elasticity of compression steel wire, there are at least two dops the lower end, gapped between the dop, there is jut at the edge of dop, jut engages mutually with telescopic screens step, and the dop lower end has and can cause after with the inner core bayonet socket inserting being closed dop cohesion and then cause jut to break away from the extension of sleeve screens step.

As have as described in the claim 3 two steps unmake inner core steel needle self-shrinking syringe, it is characterized in that: the described band that easily splits, be annular, its thinnest part thickness δ scope is between 0.2～0.3mm.

5. as claimed in claim 3 have a unmake steel needle self-shrinking syringe of inner core of two steps, it is characterized in that: described sleeve lining upper end has be used for the preceding screens step of screens inner core when sliding after inner core is subjected to elastic wire power.

6. as claimed in claim 3 have a unmake steel needle self-shrinking syringe of inner core of two steps, it is characterized in that: described sleeve lining lower end has after inner core is subjected to elastic wire power and to be used for the back screens step of screens inner core when sliding, and inner core lower end one is extended projection and matched with the telescopic step of screens afterwards.

7. as claimed in claim 3 have a unmake steel needle self-shrinking syringe of inner core of two steps, and it is characterized in that: described joint is made up of joint body and interchangeable fitting sleeve, and wherein draw point is connected on the interchangeable fitting sleeve.

8. as claimed in claim 3 have a unmake steel needle self-shrinking syringe of inner core of two steps, it is characterized in that: described sleeve top has and is used for the card neck of screens elastic wire, and card neck and sleeve are one-body molded.

9. as claimed in claim 3 have a unmake steel needle self-shrinking syringe of inner core of two steps, and it is characterized in that: described sleeve head is socketed with a fixed cover, has on this fixed cover to be used for the card neck of screens elastic wire.

10. as claimed in claim 3 have a unmake steel needle self-shrinking syringe of inner core of two steps, it is characterized in that: the core head top plug has the interior plug that has bayonet socket in described, in the core head, contact surface formed and easily splits band between Nei Sai and the interior core head in interior plug was fixed on by extruding force, frictional force or cohesive force.