CN1803209A

CN1803209A - Safe vein indwelling needle catheter

Info

Publication number: CN1803209A
Application number: CN 200510002033
Authority: CN
Inventors: 杰瑞W·怕克
Original assignee: INNOVATIVE MEDICAL MANUFACTURING Co
Current assignee: INNOVATIVE MEDICAL MANUFACTURING Co
Priority date: 2005-01-12
Filing date: 2005-01-12
Publication date: 2006-07-19

Abstract

The invention discloses a safe vein indwelling needle conduit, which comprises the following parts: cylinder, needle seat, elastic body and conduit seat, wherein the needle seat contains complex path groove and striking flake to project the cylinder, which makes the needle projects in the conduit; when the conduit seat separates from the cylinder, the striking flake separates from the groove and recycles the needle in the cylinder automatically due to elastic force. The invention can prevent needle from piercing.

Description

Safe vein indwelling needle catheter

Technical field

The present invention is relevant to a kind of safe vein indwelling needle catheter, refers to a kind of safe vein indwelling needle catheter that can automatically syringe needle be recovered in the syringe especially.

Background technology

Conduit is to use in being injected into medicinal liquid in sufferer blood, medicinal liquid is normal saline solution or healing potion for example, general conduit comprises a syringe, one conduit and a syringe needle, syringe needle is inserted in the conduit during use, medical personnel are inserted in conduit in the patient's blood vessel in the lump by syringe needle, once after plugging conduit, conduit and syringe needle and syringe can be broken away from, and conduit is stayed on one's body the patient, when as long as patient need import medicinal liquid, the end of threading a needle that directly will put drop bottle is inserted in the conduit and gets final product, can avoid patient to be had an acupuncture treatment always, can avoid patient to cause blood stasis to be not easy to find blood vessel to import needed medicinal liquid simultaneously because of repeatedly having an acupuncture treatment because different time will import medicinal liquid.

Yet the conduit of commonly using is exposed to outside the syringe owing to syringe needle, therefore after syringe needle is extracted conduit, need syringe needle to be utilized this syringe needle of a processing unit processes to avoid causing danger nearby, but at this moment because medical personnel must inject the needed medicinal liquid of patient in the patient body and the exposed syringe needle of processing simultaneously, therefore cause injury to personnel easily at the exposed syringe needle of this neutral, perhaps must after extracting, syringe needle immediately needle guard be covered syringe needle, therefore medical personnel will cover syringe needle in the short time shortly, and medicinal liquid must be connected in the conduit, so might be because stabbed by syringe needle because of carelessness.The person also may produce danger because used syringe needle does not have handled to handle the garbage in addition, therefore how to avoid above-mentioned disappearance to need improvements for relevant manufacturer.

Summary of the invention

To commonly use disappearance in order improving, to the invention provides and a kind ofly can automatically syringe needle be recovered in the safe vein indwelling needle catheter of avoiding stabbing medical personnel in the syringe.

In order to achieve the above object, the invention provides a kind of safe vein indwelling needle catheter, it is to comprise a syringe, a needle holder, an elastomer and a catheter block;

This syringe one end protrudes out and is provided with a plurality of shell fragments;

This needle holder is assembled in the syringe, and needle holder one end is provided with a syringe needle, and these needle holder outer peripheral edges are concaved with complex trace ring-type Ka Gou;

This elastomer is to be assembled in the syringe, and the elastomer two ends are to be resisted against respectively on syringe and the needle holder; And

This catheter block is that assembling is fixed on the syringe, it is to be provided with a room in inside, and extend in front end and to be provided with a conduit, this catheter center and room are connected to form a channel, and the distance of the internal diameter of this room when not suffering oppression between shell fragment on the syringe, and allow the shell fragment of this syringe support to arrive in and be fastened in the ring-type card ditch of needle holder in the inwall of room.

Described safe vein indwelling needle catheter further comprises a needle guard, and this needle guard is covered on outside the catheter block and is sheathed on the syringe outer rim.

Described safe vein indwelling needle catheter, wherein this shell fragment is a pair of and is the folder shape.

Described safe vein indwelling needle catheter, wherein syringe has a catheter block binding end and an open end, and this catheter block binding end is equipped with a perforation, and shell fragment is to organize to be located on the catheter block binding end.

Described safe vein indwelling needle catheter, wherein needle holder has a syringe needle binding end and a base binding end, this base binding end is connected with a needle holder base, the radius of this needle holder base is greater than the radius of needle holder, and elastomeric two ends are to be respectively needle holder assembling end and syringe assembling end, this needle holder assembling end is butted on the needle holder base of needle holder, and this syringe assembling end then is butted on the catheter block binding end of syringe.

In the described safe vein indwelling needle catheter, this shell fragment is a pair of and is the folder shape.

In the described safe vein indwelling needle catheter, the aperture that the diameter of this needle holder is worn less than syringe.

In the described safe vein indwelling needle catheter, this elastomer is a spring.

In the described safe vein indwelling needle catheter, this cock body is a porous plug.

By this, the present invention is after using, can be after syringe be pulled back, make needle holder be because of shell fragment closes with engaging of Ka Gou, move backward and the disengaging catheter block with syringe, and break away from the room of catheter block at shell fragment after, because of the automatic disengaging of the elastic force of itself with the pass that engages of Ka Gou is, allow syringe needle automatically be recovered in the syringe because of elastomeric elastic force, so not only can avoid when syringe needle is extracted conduit, cause medical personnel's injury because handling accidentally, perhaps cause other MEDICAL WASTE TREATMENT personnel or arround personnel's injury, and user can be used one-handed performance, the convenience that improves the safe vein indwelling needle catheter operation and use.

Description of drawings

Fig. 1 is a three-dimensional part exploded view of the present invention.

Fig. 2 is a three-dimensional exploded view of the present invention.

Fig. 3 is a side cut away view of the present invention.

Fig. 4 is an enforcement view of the present invention.

In the accompanying drawing:

The 10--needle holder

12--syringe needle binding end

14--base binding end

16--needle holder base

17--wears

The 18--syringe needle

19--Ka Gou

The 20--elastomer

22--syringe assembling end

24--needle holder assembling end

The 30--syringe

32--catheter block binding end

The 34--open end

The 36--perforation

The 38--shell fragment

The 40--catheter block

The 42--room

The 44--conduit

The 45--channel

The 50--needle guard

The 60--cock body

The specific embodiment

See also Figure 1 and Figure 2, safe vein indwelling needle catheter of the present invention comprises a syringe 30, a needle holder 10, an elastomer 20, a catheter block 40, a needle guard 50 and a cock body 60.

This syringe 30 has a catheter block binding end 32 and an open end 34, and this catheter block binding end 32 is equipped with a perforation 36 and outwards protrudes out and is provided with a plurality of shell fragments 38, and preferably this shell fragment 38 is a pair of and is the folder shape.

This needle holder 10 is assembled in the syringe 30, and have a syringe needle binding end 12 and a base binding end 14, the base binding end 14 of this needle holder 10 is connected with a needle holder base 16, and the radius of this needle holder base 16 is greater than the radius of needle holder 10, other these needle holder 10 centers are axially arranged with wears 17, and be provided with a syringe needle 18 that protrudes from syringe needle binding end 12 in 17 in wearing, again, these needle holder 10 nearly syringe needle binding ends 12 places are concaved with complex trace ring-type card ditch 19, and the diameter of this needle holder 10 is worn 36 aperture less than syringe 30 in addition.

This elastomer 20 preferably is a spring, it is to be assembled in the syringe 30 and to have the assembling of needle holder assembling end 24 and one syringe to hold 22, this elastomer 20 is sheathed on outside the needle holder 10, and its needle holder assembling end 24 is butted on the needle holder base 16 of needle holder 10, and this syringe assembling end 22 then is butted in the catheter block binding end 32 of syringe 30.

Again, this catheter block 40 is provided with a room 42 in inside, and extend in front end and to be provided with a conduit 44, these conduit 44 centers and room 42 are connected to form a channel 45, and the distance of the internal diameter of this room 42 when not suffering oppression less than syringe 30 38 on each shell fragment, therefore the shell fragment 38 when syringe 30 is assembled in the room 42 of catheter block 40, and this shell fragment 38 supports to arrive in the inwall of room 42, and makes catheter block 40 assemblings be fixed in the catheter block binding end 32 of syringe 30.

This needle guard 50 preferably can be covered on outside the catheter block 40 and be sheathed on syringe 30 outer rims.

The open end 34 of syringe 30 is located in 60 assemblings of this cock body, is when preventing that needle holder 10 from reclaiming, and the blood that residues on the syringe needle 18 flows out syringe 30, and preferably, this cock body 60 can be porous plug.

Cooperate Fig. 3 to see it, the syringe needle 18 of this needle holder 10 is arranged in the conduit 44 of catheter block 40, and the shell fragment 38 that makes syringe 30 is sticked in the card ditch 19 of needle holder 10, make syringe needle 18 be fixed in the channel 45 of catheter block 40 and protrude out outside the conduit 44, this moment, elastomer 20 was squeezed, and this needle guard 50 was sheathed on and prevented unexpected the generation outside the syringe needle 18 this moment.

Cooperate Fig. 4 to see it again, when medical personnel use, with needle guard 50 by taking off on the safe vein indwelling needle catheter, with syringe needle 18 inclined-planes upwards, and with skin be 30 to 40 the degree angles, with pointing the fixedly skin of injection site, after making that syringe needle 18 inserts patient skin together with conduit 44, reduce syringe needle 18 angles to 15 degree, in intravasation, visible blood-flow, reach the purpose that conduit 44 is inserted in the patient's blood vessel, afterwards, again catheter block 40 is separated with syringe 30, be about to syringe 30 and be pulled away from catheter block 40, this moment, needle holder 10 meetings were because of the snap-fit relationship of shell fragment 38 with card ditch 19, and move and break away from catheter block 40 with syringe 30, when shell fragment 38 left the room 42 of catheter block 40, shell fragment 38 promptly can stretch automatically because of not suffering oppression, and made shell fragment 38 break away from the card ditch 19 of needle holder 10, these elastomer 20 suffered compressings disappear, promptly promote the catheter block binding end 32 of needle holder 10, so syringe needle 18 retracts automatically in syringe 30 promptly, and catheter block 40 is retained on one's body the patient away from syringe 30, when injection normal saline solution or medicament, can directly the termination of threading a needle of drop or syringe be gone in the conduit 44 to get final product.

The present invention can be recovered in syringe needle in the syringe automatically, can avoid when syringe needle is extracted conduit, cause medical personnel's injury accidentally because handle, perhaps cause other MEDICAL WASTE TREATMENT personnel or arround personnel's injury, and only need catheter block 40 inject patients on one's body after, pull back syringe 30, can allow needle holder 10 break away from catheter block 40 and the retraction syringe 30 automatically, so the medical personnel that use do not need unnecessary action, be one-hand operation, can improve convenience and efficient that syringe needle reclaims.

Claims

1. a safe vein indwelling needle catheter is characterized in that, it is to comprise a syringe, a needle holder, an elastomer and a catheter block;

2. further comprise a needle guard as 1 described safe vein indwelling needle catheter of claim the, it is characterized in that this needle guard is covered on outside the catheter block and is sheathed on the syringe outer rim.

3. as claim the 1 or 2 described safe vein indwelling needle catheters, it is characterized in that wherein this shell fragment is a pair of and is the folder shape.

4. as 3 described safe vein indwelling needle catheters of claim the, it is characterized in that wherein syringe has a catheter block binding end and an open end, this catheter block binding end is equipped with a perforation, and shell fragment is to organize to be located on the catheter block binding end.

5. as 4 described safe vein indwelling needle catheters of claim the, it is characterized in that, wherein needle holder has a syringe needle binding end and a base binding end, this base binding end connects does not have a needle holder base, the radius of this needle holder base is greater than the radius of needle holder, and elastomeric two ends are to be respectively needle holder assembling end and syringe assembling end, and this needle holder assembling end is butted on the needle holder base of needle holder, and this syringe assembling end then is butted on the catheter block binding end of syringe.

6. as 5 described safe vein indwelling needle catheters of claim the, it is characterized in that, wherein the diameter of this needle holder aperture of wearing less than syringe.

7. as 6 described safe vein indwelling needle catheters of claim the, it is characterized in that wherein this elastomer is a spring.

8. as 7 described safe vein indwelling needle catheters of claim the, it is characterized in that wherein this cock body is an air lock.