CN2224628Y - Automatic syringe with dual springs - Google Patents

Abstract

The utility model provides an automatic syringe in a dual spring type, which is composed of an upper and a lower needle cylinders. The upper part of the upper needle cylinder is provided with an upper spring and a core rod, and the lower part is provided with a switch. The core rod passes through the switch. The inner part of the lower needle cylinder is provided with a specially drug solution bottle without a bottom. The inner part of the bottle is filled with the physic liquor. The inner part of a connection seat at the lower side of the physic liquor bottle is provided with a lower spring. A dual extension needle head is arranged on needle holder. The bottom of the lower needle cylinder is provided with a needle outlet and a disinfection pad. When the utility model is used, medical personnel only need to press a switch button, and then automatic sterilization, automatic needle insert and automatic drug filling can be realized under the function of the tensile force of the upper and the lower spring of the core rod. The utility model has the advantages of simple structure, ingenious operation, portability, drug storage for a long time, medicine change at any time, use for one time or more time, etc.

Description

The double-spring type automatic injector

This utility model double-spring type automatic injector belongs to medical apparatus and instruments.

At present, the syringe that generally uses in the medical treatment is to be made of needle tubing, core bar, piston and syringe needle.Must push core bar and inject with hand-held continuous during use, all be in person the patient who examines or pay a home visit to be imposed injection by medical personnel generally.Because the prescription on individual diagnosis program is numerous and diverse, injection operation is time-consuming, so just to emergent curing (first aid, save oneself), prolonged illness notes, autotherapy often, carry standby patient and the crowd brings numerous inconvenience.

The purpose of this utility model be to provide a kind of at any time, everywhere, with the people, with the automatic injector of need, instant notes, any user only need press the shift knob of automatic injector, just can sterilize automatically, automatically inserting needle, injection automatically.

This utility model double-spring type automatic injector needle tubing is upper and lower needle tubing structure, both are connected by spiral shell button or buckle, the winding the needle tube top is totally-enclosed, top is that a tubular spring protects groove, one switch is arranged at the bottom, core bar passes in the middle of switch, upper spring places the core bar spring to protect groove and the winding the needle tube spring protects among the groove, one groove is arranged at the core bar bottom, gauge tap is an oblate elasticity folder formula press button, two dops of elasticity folder put in respectively in the hole clipping of winding the needle tube tube wall, and one of them switch dop stretches out the winding the needle tube tube wall and constitutes shift knob.When the elasticity folder is oblate, block the core bar groove, core bar can not be moved up and down.When the Push switch button, oblate elasticity folder opens and becomes circle and the disengagement of core bar groove, and core bar can move up and down.Be inverted the special medicinal liquid bottle in a no end in the following needle tubing, medicinal liquid bottle afterbody is equipped with the piston that matches with medicinal liquid bottle internal diameter, and this piston is withstood in the lower end of core bar, and medicinal liquid bottle bottleneck is equipped with medicinal liquid with rubber stopper and the sealing of aluminum ring gland in the bottle.The connection seat that leaves pin hole in the middle of the one H type is housed between medicinal liquid bottle bottleneck and the needle stand, and lower spring is placed in one, and has on the needle stand twoly to stretch syringe needle and can move up and down with needle stand.A needle outlet is left in following needle tubing bottom, and side is placed with disinfection pad within it.To descend needle tubing to outward winding when standby, and core bar be carried to the switch place pinned from winding the needle tube; Put into the medicinal liquid bottle, needle tubing is tightened stand-by up and down then.During injection, needle outlet is aimed at the injection site, the Push switch button, at this moment core bar moves down under the tension force effect of upper spring, the drive piston is downward, owing between piston and the medicinal liquid bottle inwall bigger frictional force is arranged, cause the medicinal liquid bottle with piston to the lower compression lower spring and make connection seat, needle stand is downward thereupon, at this moment following on the needle stand stretched syringe needle and passed disinfection pad and thrust skin, because needle tubing bottom and disinfection pad stop that needle stand and connection seat continue downwards down, force needle stand on stretch the rubber stopper that syringe needle thrusts the medicinal liquid bottle, and stop the medicinal liquid bottle to continue downwards, at this moment the tension force of upper spring has overcome the frictional force between piston and the medicinal liquid bottle wall, it is downward along medicinal liquid bottle inwall that core bar drives piston, and medicinal liquid is injected human body.Can reach nonexpondable purpose by changing syringe needle or medicinal liquid bottle.

This utility model double-spring type automatic injector has simple in structure, operate nimble, easy to carry, with low cost, safe and reliable and can reach during the journey with the scene of the accident in medical treatment, health care unit, family, work, production, disaster, at any time, everywhere, carry out uses such as various treatments, prevention, first aid, health care with need, and can be used for fields such as herding, veterinary, scientific experimentation, commercial production.Be more suitable for saving oneself and rescuing mutually etc. of battlefield.

Fig. 1 is this utility model double-spring type automatic injector structure chart, wherein: 1. winding the needle tube; 2. upper spring; 3. core bar; 4. switch; 5. piston; 6. spiral shell button; 7. medicinal liquid bottle; 8. medicinal liquid; 9. descend needle tubing; 10. aluminum ring; 11. rubber stopper; 12. connection seat; 13. lower spring; 14. needle stand; 15. two syringe needles of stretching; 16. disinfection pad; 17. needle outlet.

Fig. 2 is this utility model double-spring type automatic injector switch junctions composition, 1. winding the needle tube; 3. core bar; 4. switch; 18. elasticity folder; 19. dop; 20. hole clipping.A is when blocking, and B is when unclamping.

Provide an embodiment of this utility model double-spring type automatic injector below, winding the needle tube among Fig. 1 (1), following needle tubing (9), switch (4), core bar (3), connection seat (12) and needle stand (14) are all made with plastic shaping, and needle tubing connects with spiral shell button or buckle (6) up and down.The elasticity at winding the needle tube (1) top is protected groove and core bar (3) spring and is protected upper spring (2) is housed between the groove, and a groove is arranged at core bar (3) bottom.One lower spring (13) littler than upper spring (2) elastic force is housed between connection seat (12) under medicinal liquid bottle (7) bottleneck and needle stand (14), and there is a needle outlet (17) following needle tubing (9) bottom, and side is put the nontoxic foam disinfection pad (16) that is soaked with disinfectant solution within it.The switch of Fig. 2 is made with elastoplast, and switch becomes flat (A) during pinning, is stuck in the groove of core bar, and when pushing, switch change circle (B) core bar gets loose and moves down.The medicinal liquid bottle is made with medical glass, and being one does not have the bottom and the special medicinal liquid bottle of piston is housed, and the piston inner wall tight connecting is keeping certain frictional force and to seal medicinal liquid, and bottleneck seals with medical grade rubber plug (11) and aluminum ring (10) trim ring.Two syringe needles (15) of stretching are special ultra-fine syringe needle, on stretch syringe needle with stretch down syringe needle be communicated with and be fixed on the needle stand (14), connection seat (12), needle stand (14) all contact and can move up and down with following needle tubing (9) inwall with medicinal liquid bottle (7).

Claims (3)

1. one kind by needle tubing, core bar, the syringe that piston and syringe needle are formed, it is characterized in that needle tubing is made of winding the needle tube and following needle tubing, both are connected by spiral shell button or buckle, the winding the needle tube top closure, top is that a tubular spring protects groove, one switch is arranged at the bottom, core bar passes in the middle of switch, upper spring places the core bar spring to protect groove and the winding the needle tube spring protects among the groove, one groove is arranged at the core bar bottom, put a no end in the following needle tubing and be inverted special medicinal liquid bottle, one H type and the middle connection seat that leaves pin hole are arranged between medicinal liquid bottle bottleneck and the needle stand, and lower spring is placed in one, and has on the needle stand twoly to stretch syringe needle and can move up and down with needle stand, there is a needle outlet following needle tubing bottom, and side is placed with disinfection pad within it.

2. according to the described double-spring type automatic injector of claim 1, the switch that it is characterized in that being positioned at winding the needle tube is oblate elasticity folder formula press button, and the dop of elasticity folder extend in the hole clipping of winding the needle tube.

3. according to the described double-spring type automatic injector of claim 1, it is characterized in that the medicinal liquid bottle is the medicinal liquid bottle of the no end, its afterbody has a piston that matches with medicinal liquid bottle internal diameter, and bottleneck is equipped with medicinal liquid with rubber stopper and the sealing of aluminum ring trim ring in the medicinal liquid bottle.

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