CN103272312A

CN103272312A - Rotary damageable needle head

Info

Publication number: CN103272312A
Application number: CN2013102092111A
Authority: CN
Inventors: 杨舟
Original assignee: ZHEJIANG KANGTAI MEDICAL DEVICES CO Ltd
Current assignee: ZHEJIANG KANGTAI MEDICAL DEVICES CO Ltd
Priority date: 2013-05-15
Filing date: 2013-05-15
Publication date: 2013-09-04

Abstract

The invention relates to a rotary damageable needle head. A needle base is composed of an inner needle base and an outer needle base. A protruding point of the inner needle base is clamped with a step of the outer needle base in an aligned mode. After rotation, the protruding point of the inner needle base is staggered and loosened from the outer needle base, so that the inner needle base and a steel needle of the inner needle base are retracted conveniently. After the rotary damageable needle head is matched with a matched injector cylinder, the use performance of the rotary damageable needle head basically has no difference with a common injector. The use habit of medical staff is not changed. After the rotary damageable needle head is used, needle damage operation is simple and safe.

Description

Rotation can be ruined syringe needle

Technical field

The present invention relates to a kind of medical supplies, be specially rotation and can ruin syringe needle.

Background technology

At present medical institutions widely used have an injection tube with after to ruin type not thorough, have the repeated use risk; Handle the needle point process and do not consider that medical personnel protect, have the cross infection risk.

Summary of the invention

At the problems referred to above, the object of the present invention is to provide a kind of rotation can ruin syringe needle, comprise the tube of having an injection of this needle stand, with after wrack needle point, do not have needle point to stab medical personnel's risk in the breaking-up process, have simple in structure, easy to operate, non-hazardous characteristics.

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

Include sheath, draw point, interior needle stand and outer needle stand, it is characterized in that: needle stand is positioned at outer needle stand in described, inside and outside needle stand has at least one screens structure, when inside and outside needle stand screens structure alignment, interior needle stand is fixed on the outer needle stand, when inside and outside needle stand screens structure staggers by relative rotary motion, interior needle stand separates with outer needle stand, and under the effect of pulling back of supporting push rod, interior needle stand can be related steel needle retractable on it advance supporting overcoat, be sealed and matched between inside and outside needle stand.

The pin base fastener bit architecture is 2 salient points in described, and outer pin base fastener bit architecture is 2 steps.

On the described outer needle stand guide rail is arranged, can change the rotation movement of the screens structure of interior needle stand into retreating movement, needle stand retraction in causing.

There is cavity the needle stand rear end in described, and the rotation rib is arranged in the cavity, and the cavity bottom nozzle has narrow card neck.

Compared to existing technology, the present invention has following advantage:

1, the present invention ruins type and anti-acupuncture two big functions by traditional needle stand is divided into inside and outside needle stand with the change realization of minimum.Simple in structure, fit dimension requires low, and the automaticity height is fit to volume production.

2, sheath of the present invention, draw point, interior needle stand and outer needle stand can be used as an integral body and change, and have solved the present self-destruction ubiquitous problem that can't change entry needle of tube of having an injection.

3, cooperate the fixing and two states that gets loose that staggers of existence alignment between inside and outside needle stand of the present invention, needle point is stable during use does not bounce back, and needle point can easily bounce back when ruining type; And like product is realized fixing and the two kinds of distinct functions that get loose by the same state of same group of structure, often attends to one thing and lose sight of another, and occurs needle point retraction in advance in use easily, or can't bounce back when ruining type.

4, cooperate the fixing and two states that gets loose that staggers of existence alignment between inside and outside needle stand of the present invention, its transformation energy relies on spinning movement easily to realize, is convenient to production and assembly, is convenient to ruin the type operation, and the user of service grasps easily.

Description of drawings

Fig. 1 can ruin syringe needle and a supporting overall schematic of having an injection for rotation;

Fig. 2 is inside and outside needle stand screens structural representation among Fig. 1;

Fig. 3 rotates the sketch map that staggers for inside and outside needle stand;

Fig. 4 is inside and outside needle stand screens structural representation among Fig. 3;

Fig. 5 is interior needle stand retraction sketch map;

Fig. 6 is inside and outside needle stand screens structural representation among Fig. 5.

The specific embodiment

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

As shown in Figure 1, rotation can be ruined syringe needle and a supporting overall structure of having an injection, wherein rotation can be ruined syringe needle and included sheath 1, draw point 2, interior needle stand 3 and outer needle stand 4, interior needle stand 3 is positioned at

outer needle stand

4,2 salient points 31 of interior needle stand 3 align with 2 steps 41 of outer needle stand 4, both relative fixed, and there is cavity 32 interior needle stand 3 rear ends, rotation rib 33 is arranged in the cavity 32, and cavity 32 bottom nozzles have narrow card neck 34.The supporting tube of having an injection includes overcoat 5 and conehead 51, piston 6, push rod 7 and revotating card neck 71.

As shown in Figure 2,2 salient points 31 of interior needle stand 3 align both relative fixed with 2 steps 41 of outer needle stand 4.

As shown in Figure 3, before the use, can ruin rotation outer taper 51 secure fit of outer needle stand 4 with the supporting tube of having an injection of syringe needle earlier, after the use, push rod revotating card neck 71 is pushed the rear end cavity 32 of interior needle stand 3 and rotates about 90 °, needle stand rotation rib 33 rotations in revotating card neck 71 drives, interior needle stand salient point 31 rotates about 90 ° thereupon, stagger with outer needle stand step 41, both get loose relatively.

As shown in Figure 4, interior needle stand salient point 31 staggers with outer needle stand step 41, and both get loose relatively.

As shown in Figure 5, after inside and outside needle stand separates, continue rotation retractable push rod 7, push rod revotating card neck 71 produces snap action with the narrow card neck 34 of interior needle stand cavity, and needle stand 3 and draw point 2 retractions realize ruining type and anti-acupuncture function in making.

As shown in Figure 6, outside under the guiding function of needle stand guide rail 42, the continuing to rotatablely move of interior needle stand salient point 31 is converted into downward motion, further auxiliary in needle stand 3 and draw point 2 retractions.

Those of ordinary skill in the art should be realized that, above embodiment just is used for illustrating the present invention, but not as limitation of the invention, 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.

Claims

1. a rotation can be ruined needle stand, include sheath, draw point, interior needle stand and outer needle stand, it is characterized in that: needle stand is positioned at outer needle stand in described, inside and outside needle stand has at least one screens structure, when inside and outside needle stand screens structure alignment, interior needle stand is fixed on the outer needle stand, when inside and outside needle stand screens structure staggers by relative rotary motion, interior needle stand separates with outer needle stand, and under the effect of pulling back of supporting push rod, interior needle stand can be related steel needle retractable on it advance supporting overcoat, be sealed and matched between inside and outside needle stand.

2. rotation as claimed in claim 1 can be ruined needle stand, it is characterized in that: the pin base fastener bit architecture is 2 salient points in described, and outer pin base fastener bit architecture is 2 steps.

3. rotation as claimed in claim 1 can be ruined needle stand, it is characterized in that: on the described outer needle stand guide rail is arranged, can change the rotation movement of the screens structure of interior needle stand into retreating movement, needle stand retraction in causing.

4. rotation as claimed in claim 1 can be ruined needle stand, it is characterized in that: there is cavity the needle stand rear end in described, and the rotation rib is arranged in the cavity, and the cavity bottom nozzle has narrow card neck.