CN2805789Y

CN2805789Y - Novel subcutaneous vein detention needle

Info

Publication number: CN2805789Y
Application number: CN 200520095899
Authority: CN
Inventors: 余清
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-08
Filing date: 2005-04-08
Publication date: 2006-08-16
Anticipated expiration: 2015-04-08

Abstract

The utility model discloses a novel subcutaneous vein retaining needle which is composed of a puncture needle, a retaining needle, a retaining needle inner plug and an intermediate connecting hose, wherein the puncture needle is composed of a needle head, a needle tube and a puncture needle handle. The retaining needle is composed of the inner plug, the tube wall and a retaining needle handle. The middle of the puncture needle is provided with a seam and the inner side of the puncture needle handle is provided with a puncture needle groove. Correspondingly, the rear side of the retaining needle handle is provided with a convex block which has the same shape and the same size with the groove. Furthermore, the groove and the convex block are in concave-convex connection and are fixed at the inner side of the handle. The utility model is provided with an annular groove and a fixed bracket used for fixing the front end of the retaining needle near the needle tube end of the puncture needle or at the end of the retaining needle handle in the inner cavity of the retaining needle. The utility model increases the area of a needle opening and raises the flow speed of physic liquor. The retaining needle opening does not injure blood vessels, and the utility model can replace the existing disposable transfusing needle, is convenient for patients, has the advantages of simple structure, high practicality, low cost and good effect, and is suitable for extensive masses, especially children.

Description

Novel venae subcutaneae remaining needle

Technical field

This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of venae subcutaneae remaining needle.

Background technology

The intravenous injection of medical therapy process is a kind of very common method.In the disease treatment process same patient to want intravenous injection 3-4 time, purpose in one day sometimes be to improve drug effect, but subcutaneous puncture has brought misery to patient, has also increased medical personnel's workload.Patient is for avoiding multiple injection, and also often with one day dose shot drop, medicine increases the side effect of patient's internal organs the doctor like this, and curative effect is also not as a small amount of multiple dosing, and especially children's's venae subcutaneae pin is difficult beats and cracky.Though existing venae subcutaneae remaining needle, because of costing an arm and a leg, patient is also difficult to bear, and the defective that price is low is many, and the particularly bad use of pin type does not reach very little yet.

Summary of the invention

The purpose of this utility model is: overcome the prior art defective, a kind of low cost of manufacture is provided, be fit to vast colony, be particularly suited for the small-sized pin that children's is used.

This utility model is realized by following scheme: be made of plug in puncture needle, remaining needle, the remaining needle and the middle flexible pipe that connects, puncture needle is made of syringe needle, needle tubing and puncture needle handle, and remaining needle is made of interior plug, tube wall and remaining needle handle.Is provided with a break joint in the middle of the puncture needle, puncture needle handle inboard is provided with the puncture needle Baltimore groove, correspondingly is provided with and Baltimore groove shape, projection that size is identical at remaining needle handle rear side, and forms concavo-convex the joint at handle inboard Baltimore groove with projection and fix.

Puncture needle described in the utility model is provided with annular Baltimore groove by the remaining needle handle end of syringe tip or remaining needle inner chamber, and disposes the fixed support for fixing to the remaining needle front end.Fixed support is a M shape.The pin mouth is the part inclined plane shape.

Puncture needle head described in the utility model outside coating viscosity glue or paste thin slice in order to thickening, or fish phosphorus shape microprotrusion is set at its rear portion.

Plug is inside and outside Totally-enclosed-type plug in the remaining needle described in the utility model.Be wound with O-ring seal in the described annular Baltimore groove.

Connect letter of flexible pipe in the middle of described in the utility model and connect remaining needle, the other end is a generic interface.

This utility model remaining needle mouth is the part inclined plane shape, and keeps a plane with the puncture needle mouth, is easy to the interior and dial-out into the indwelling needle tubing when making the pumpback of puncture needle head thickened section, and the pin open area is increased, and has improved the flow velocity of medicinal liquid; After puncture needle and remaining needle thrust blood vessel, remaining needle had advanced 2-5cm, and the remaining needle mouth is injured blood vessel not, fix remaining needle this moment, the puncture needle handle is also fixing, can finish transfusion equally, has both made the injection site activity, blood vessel can not puncture yet, alternative existing disposable infusion is separated the device pin, makes things convenient for the patient, and simple in structure, practical, cost is low, effective, be fit to vast colony, be particularly suited for children's is used.

Description of drawings

Structural representation when Fig. 1 punctures for this utility model;

Structural representation when Fig. 2 injects for this utility model;

Fig. 3 is this utility model fixing rack structure sketch map.

The specific embodiment

Below in conjunction with embodiment this utility model is elaborated.

Present embodiment is by filling in 4 in puncture needle 1, remaining needle 2, the remaining needle, middlely connecting flexible pipe 5 and constitute for fixing to the M shape fixed support 6 of remaining needle front end, puncture needle 1 is made of syringe needle 12, needle tubing 15 and puncture needle handle 16, and remaining needle 2 is made of interior plug 4, tube wall 3 and remaining needle handle 17.Be provided with a break joint 8 in the middle of the puncture needle 1, the effect of this break joint 8 has three, the first can make the puncture needle type very little, blood back when being convenient to puncture again (increase space).Both sides, the stressed back of needle point are expanded slightly during second puncture, increase the puncture needle cross section, and needle point rear portion and remaining needle mouth junction are easy to by skin intravasation.The 3rd thrusts puncture needle pumpback behind the blood vessel, and the needle point rear portion can slightly inwardly be shunk, and helps the puncture needle pumpback.The inboard minister of puncture needle 1 handle is 1.0cm.Puncture needle 1 is provided with annular Baltimore groove 9 by remaining needle handle 17 ends of syringe tip, remaining needle 2 inner chambers, in be wound with O-ring seal 10, its effect is to wear out blood vessel when needle point to see blood back, just stop puncture, allow puncture needle maintain static then, promote remaining needle again and enter 2-4mm, at this moment two pin rear end overlappings neither can oozing of blood, and needle section do not advance yet injured blood vessel not of 2-4mm because of there being sharp keen needle point, can make remaining needle difficult drop-off in blood vessel again.Puncture needle 1 handle inboard is provided with puncture needle Baltimore groove 13, correspondingly be provided with and Baltimore groove 13 shapes, big or small identical projection 14 at remaining needle handle rear side, and form concavo-convex the joint at handle 16 inboard Baltimore grooves 13 and projection 14 and fix, puncture needle 1 head 12 is exposed to outside remaining needle 2 inner chambers, remaining needle inner chamber 11 just in time coincide with puncture needle 1 periphery, enclose beyond the Great Wall in the remaining needle 2 with remaining needle 2 inner chambers and fit like a glove, can insert or transfer to, the middle flexible pipe 4 that connects, also but letter is connected to remaining needle 2 intracavity of handles just, and the other end is a generic interface.Remaining needle 2 pin mouths are the part inclined-plane and close shape, and whole like this needle point mouth inclined-plane is smooth, are convenient to puncture and enter skin heart.Puncture needle 1 head 12 outsides are coated with transparent viscose glue, and thickness is suitable with the remaining needle tube wall, rear portion fish phosphorus shape microprotrusion.Plug 4 is inside and outside Totally-enclosed-type plug in the remaining needle, after being used for injecting end, fills in the remaining needle inner chamber, its size is just in time coincide with the remaining needle inner chamber, comprises that the remaining needle head also gets clogged, and its objective is to prevent the blood flow seepage, prevent to keep somewhere needle tubing inner product blood again and form thrombosis, also be convenient to injection next time and use.

This utility model material therefor is with existing disposable syringe, the transfusion device raw material is the basis, cost is low, one cover puncture remaining needle adds plug in five, five connect flexible pipe and obedient glue, net cost price 5-7 unit, its retail price 8-10 unit, that whenever changes, and plug uses a price to be no more than 2 yuan in the pin, and general groups can be accepted extensively.

Claims

1, a kind of novel venae subcutaneae remaining needle, by puncture needle (1), remaining needle (2), plug (4) and the middle flexible pipe (5) that connects constitute in the remaining needle, puncture needle (1) is by syringe needle (12), needle tubing (15) and puncture needle handle (16) constitute, remaining needle (2) is by interior plug (4), tube wall (3) and remaining needle handle (17) constitute, it is characterized in that: be provided with a break joint (8) in the middle of the puncture needle (1), puncture needle (1) handle (16) inboard is provided with puncture needle Baltimore groove (13), corresponding to setting of remaining needle handle rear side and Baltimore groove (13) shape, the projection (14) of big I phase, and form concavo-convex the joint at the inboard Baltimore groove of handle (16) (13) and projection (14) and fix, puncture needle (1) head (12) is exposed to outside remaining needle (2) inner chamber, remaining needle inner chamber (11) just in time coincide with puncture needle (1) periphery, enclose beyond the Great Wall in the remaining needle (2) with remaining needle (2) inner chamber and fit like a glove, can insert or transfer to, middle connection flexible pipe (4), but also lucky letter is connected to remaining needle (2) intracavity of handle.

2, novel venae subcutaneae remaining needle according to claim 1 is characterized in that: puncture needle (1) handle (16) is provided with annular Baltimore groove (9) by remaining needle handle (17) end of syringe tip or remaining needle (2) inner chamber.

3, according to right 1 or 2 described venae subcutaneae remaining needles, it is characterized in that: dispose fixed support (6) for fixing to the remaining needle front end.

4, according to claim 1 or 2 described venae subcutaneae remaining needles, it is characterized in that: remaining needle (2) pin mouth is the part inclined plane shape.

5, according to claim 1 or 2 described venae subcutaneae remaining needles, it is characterized in that: puncture needle (1) head (12) outside coating viscosity glue or subsides thin slice are in order to thicken.

6, according to claim 1 or 2 described venae subcutaneae remaining needles, it is characterized in that: plug (4) is inside and outside Totally-enclosed-type plug in the remaining needle.

7, according to the described venae subcutaneae remaining needle of claim 2, it is characterized in that: be wound with O-ring seal (10) in the Baltimore groove (9).

8, according to claim 1 or 2 described venae subcutaneae remaining needles, it is characterized in that: middle (5) letters of flexible pipe that connect connect remaining needle, and the other end is a generic interface.

9, according to the described venae subcutaneae remaining needle of claim 3, it is characterized in that: fixed support (6) is M shape.

10, according to the described venae subcutaneae remaining needle of claim 5, it is characterized in that: rear end, puncture needle (1) head (12) outside is provided with fish phosphorus shape microprotrusion.