CN203154451U

CN203154451U - Y-shaped puncture-proof indwelling needle

Info

Publication number: CN203154451U
Application number: CN 201320182172
Authority: CN
Inventors: 王国强
Original assignee: Individual
Current assignee: Shanghai Puyi Medical Instruments Co ltd
Priority date: 2013-04-12
Filing date: 2013-04-12
Publication date: 2013-08-28
Anticipated expiration: 2023-04-12

Abstract

Disclosed is a Y-shaped puncture-proof indwelling needle. A needle (1) passing out of a stainless steel needle tube (9) is disposed in a cannula (2). The rear of the cannula (2) is connected with a tube guide block (3). A needle holder (10) is sleeved at the rear of the tube guide block (3). An infusion extended tube (12) is externally connected to the front end of the tube guide block (3). A rubber plug (4) is disposed in an inner cavity of the tube guide block (3). A liner tube (13) is coaxially connected to the rear of the tube guide block (3). A core support (7) and an expansion sheet (6) are disposed in the liner tube (13). The stainless steel needle tube (9) passes forwards from the rear end of the needle holder (10) out of the liner tube (13), the rubber plug (4) and the cannula (2). A puncture-proof spring plate and core support structures are disposed between the tube guide block (3) and the needle holder (10), the related structures are mutually linked and fitted, and accordingly normal use is guaranteed, needle withdrawal is safe, the tip of the needle is wrapped effectively and is isolated from contacting the outside, and accidental injury risk of medical staff and patients during use of the indwelling needle is avoided. The Y-shaped puncture-proof indwelling needle is simple in structure and convenient to operate, and modification of existing techniques is facilitated.

Description

The Y formula is anti-stab puts that let the acupuncture needle remain at a certain point

Technical field

The present invention relates to International Classification of Patents A61M5 and import medium in the human body or be passed to technique with the apparatus field on the human body, belong to that a kind of medical infusion indwelling needle device, especially Y formula are anti-stab puts that let the acupuncture needle remain at a certain point.

Background technology

In the prior art, transfusion every day of part needs of patients is arranged, in order to alleviate the patient suffering, in this case, be fixed on behind the one-time puncture that the injection site is standby at any time to be put that let the acupuncture needle remain at a certain point technology begins extensively to be paid attention in continuous many days, but, because the stainless pin needle tubing that uses can not be stayed in the blood vessel for a long time, for avoiding venipuncture every day, adopt the way of remaining needle now, be that remaining needle penetrates behind the blood vessel and is surrounded by sleeve pipe outward because of its stainless pin needle tubing, this sleeve pipe also with while intravasation under the guiding of stainless pin needle tubing, is transferred to stainless pin needle tubing sleeve pipe to stay in the blood vessel then and just can be kept about 7 days.Yet, along with putting the application that let the acupuncture needle remain at a certain point, the deficiency of potential safety hazard has also appearred existing in its use, as, patient's struggle is appearring in the needle tubing of the remaining needle that uses when transfering to or the doctor operates under the neglectful fortuitous event, can cause needle point to accidentally injure the implementation and operation medical personnel, so, when using the remaining needle product to patients with infectious diseases, medical personnel will bear great risk.

Less to correlation technique from the disclosed Searches of Patent Literature, as 201010162187.7 1 kinds of needle puncture-preventing remaining needles of Chinese patent application, remaining needle needle stand and catheter block are connected, catheter block front end fixed sleeving, be needle tubing in the middle of the sleeve pipe, the needle stand other end connects exhaust joint, exhaust joint has head protector, be provided with an elasticity needle point guard spare in the catheter block, needle tubing passes this elasticity needle point guard spare, the needle tubing card that needle tubing is provided with is mixed diameter greater than the hole of threading a needle on this elasticity needle point guard spare rear wall, elasticity needle point guard spare is provided with the needle point guard card and mixes, and this needle point guard card is mixed and be may be stuck on the catheter block draw-in groove that the catheter block rear end is provided with, when described needle tubing is extracted from catheter block, the needle point guard card is mixed and can be broken away from described catheter block draw-in groove, and elasticity needle point guard spare is extracted catheter block together with needle tubing parcel and needle tubing.

And for example, 201020687126.8 1 kinds of anti-acupuncture venous detaining needles of Chinese patent application are made up of needle shield, conduit tube component, puncture needle assembly; Conduit tube component comprises conduit, threeway catheter block, funnel, sealing-plug, flexible pipe, threeway seat, calparine cap, end cap, clip; The puncture needle assembly comprises puncture needle tubing, band wing needle stand and Needlestick prevention device; Needlestick prevention device is made up of connector, hollow sliding sleeve and sealed button.

And for example; Chinese patent application 200720039137.3 safe type retention needles; comprise puncture needle; conduit; catheter block; puncture needle comprises notch needle tubing and side handle; the front portion of notch needle tubing is provided with the side channel hole; the rear portion of catheter block is provided with resilient protection spare; the top of resilient protection spare is provided with downward fixture block; the length that resilient protection spare is positioned at the fixture block front portion is positioned at the length of front portion, side channel hole greater than the notch needle tubing; the bottom of resilient protection spare is provided with the locating slot of shelving puncture needle; when puncture needle was extracted catheter block, the side channel hole of the fixture block card entry slot lancet pipe of resilient protection spare made resilient protection spare wrap in notch needle tubing head and extracts catheter block with puncture needle.

Summary of the invention

Goal of the invention of the present invention is to provide a kind of Y formula anti-stab remaining needle, increases succinct needle tip guard etc., and needle point is encased needle point by special parts after needle tubing is transferred to, even accident is met medical personnel, also can not cause injury under the protection of special parts.

Realize that goal of the invention measure of the present invention is: the syringe needle that passes the rustless steel needle tubing in the sleeve pipe, sleeve pipe rear portion connecting duct seat, catheter block rear portion socket needle stand, prolong pipe at the external infusion of catheter block front end, insert plug at the catheter block inner chamber, and the coaxial connection bushing pipe at the catheter block rear portion is inserted core holder and the sheet that rises in the bushing pipe, the rustless steel needle tubing passes bushing pipe, plug and sleeve pipe forward from the needle stand rear end.

The invention has the advantages that, anti-perverse shell fragment and core holder structure are installed between catheter block and needle stand, be linked mutually with dependency structure, not only guaranteed normal the use but also safety when realizing the withdraw of the needle, effectively encase needle point and seal needle point and contact with extraneous, avoid using remaining needle to accidentally injure medical worker and patient's danger, simple in structure, easy to operate, be convenient to prior art is improved.

Description of drawings

Fig. 1 is structural representation of the present utility model

Fig. 2 is the local enlarged diagram in A place among Fig. 1

Fig. 3 is the local enlarged diagram in B place among Fig. 1

Reference numeral comprises:

Syringe needle 1, sleeve pipe 2, catheter block 3, plug 4, fin 5, anti-perverse shell fragment 6, core holder 7, tailgate 8, rustless steel needle tubing 9, needle stand 10 connects muscle 11, infusion prolongs pipe 12, bushing pipe 13, card stumbles 14, inverted draw cut 15, push button 16, after the hole 17 of threading a needle, blood back observation port 18.

The specific embodiment

As shown in Figure 1, pass the syringe needle 1 of rustless steel needle tubing 9 in the sleeve pipe 2, sleeve pipe 2 rear portion connecting duct seats 3, catheter block 3 rear portion socket needle stands 10, prolong pipe 12 in the external transfusion of catheter block 3 front ends, insert plug 4 at catheter block 3 inner chambers, and at the coaxial connection bushing pipe 13 in catheter block 3 rear portions, insert core holder 7 and the sheet 6 that rises in the bushing pipe 13, rustless steel needle tubing 9 passes bushing pipe 13, plug 4 and sleeve pipe 2 forward from needle stand 10 rear ends.

In aforementioned, needle stand 10 outer walls connect fin 5 by connecting muscle 11, when firmly connecting fin 5 and pull out backward with the hands tweezer in the use, under card is stumbled 14 effect, be connected and installed anti-perverse shell fragment 9 and core holder 7 structures between catheter block 3 and the needle stand 10 and also taken out of, and needle point has also entered in the saver sub needle point has been encased simultaneously, catheter block, conduit is stayed on one's body the patient, and fixing back is also managed 12 couples of patients by the infusion prolongation and carried out infusion.Stick on the human body catheter block fixing with adhesive plaster again.

In aforementioned, prolonging pipe 12 at the external infusion of catheter block 3 front ends is to establish with observing blood back to the human body infusion liquid in order to be used for, and the joint that is connected with transfusion device or injection tool is arranged on it.Open pore at catheter block 3 anterior outer walls.

As shown in Figure 2, the push button 16 of the other oriented side projection of core holder 7 anterior axis holes, simultaneously this forequarter wall fluting and with inverted draw cut 15 UNICOMs that open at catheter block 3 rear portions, anti-perverse shell fragment 6 is installed in these lateral liner tube 13 inner chambers, anti-perverse shell fragment 6 front end outside curve projectioies head into inverted draw cut 15, and anti-perverse shell fragment 6 front ends withstand on the rustless steel needle tubing 9 to the axle last volume, anti-perverse shell fragment 6 middle parts withstand on bushing pipe 13 inwalls to upper process, the hole 17 of threading a needle after bushing pipe 13 afterbodys have, thread a needle after anti-perverse shell fragment 6 rear portions have tailgate 8 to be stuck in to pass on the rustless steel needle tubing 9 in hole 17, and the hole clipping of tailgate 8 is less than stumble 14 external diameter of card.Before needle point 1 is not retracted into bushing pipe 13 inner chambers, tangles inverted draw cut 15 by the projection of preventing perverse shell fragment 6 front ends and connect needle stand 3 and catheter block 10.

As shown in Figure 3, the anterior outer wall of rustless steel needle tubing 9 has the flat card to stumble 14, and this card 14 external diameters of stumbling are less than or equal to sleeve pipe 2 internal diameters, simultaneously, at the stainless guiding principle needle tubing 9 of sleeve pipe 2 front inner wall blood back observation port 18 is arranged.In use, card is stumbled and 14 can not passed through up to tailgate 8 places extracting out with needle tubing 9, thereby takes out of being connected and installed anti-perverse shell fragment 6 and core holder 7 structures between catheter block 3 and the needle stand 10, encases needle point and prevents that needle point from stabbing wound doctors and patients' purpose to reach.

In use, to rear portion pulling needle stand 10, the syringe needle 1 of rustless steel needle tubing 9 is return in the catheter block 3 and until anti-perverse shell fragment 6 front end last volume positions along sleeve pipe 2 inner chambers and is kept off on its passage forward, when before pushing away again, in anti-perverse shell fragment 6 front end last volume positions under suppressing block needle point 1, needle point 1 can not be passed again.

Claims

1. a Y formula is anti-stab puts that let the acupuncture needle remain at a certain point, it is characterized in that, pass the syringe needle (1) of rustless steel needle tubing (9) in the sleeve pipe (2), sleeve pipe (2) rear portion connecting duct seat (3), catheter block (3) rear portion socket needle stand (10), prolong pipe (12) at the external infusion of catheter block (3) front end, insert plug (4) at catheter block (3) inner chamber, and at catheter block (3) the coaxial connection bushing pipe in rear portion (13), insert core holder (7) and the sheet that rises (6) in the bushing pipe (13), rustless steel needle tubing (9) passes bushing pipe (13), plug (4) and sleeve pipe (2) forward from needle stand (10) rear end.

2. Y formula as claimed in claim 1 is anti-stab puts that let the acupuncture needle remain at a certain point, it is characterized in that, needle stand (10) outer wall connects fin (5) by connecting muscle (11).

3. Y formula as claimed in claim 1 is anti-stab puts that let the acupuncture needle remain at a certain point, it is characterized in that, opens pore at the anterior outer wall of catheter block (3).

4. Y formula as claimed in claim 1 is anti-stab puts that let the acupuncture needle remain at a certain point, it is characterized in that, the push button (16) of the other oriented side projection of the anterior axis hole of core holder (7), communicate at this forequarter wall fluting and with the inverted draw cut of opening at catheter block (3) rear portion (15) simultaneously, anti-perverse shell fragment (6) front end outside curve projection heads into inverted draw cut (15), and anti-perverse shell fragment (6) front end withstands on the rustless steel needle tubing (9) to the axle last volume, anti-perverse shell fragment (6) middle part withstands on bushing pipe (13) inwall to upper process, after having tailgate (8) to be stuck in to pass, the hole (17) of threading a needle after bushing pipe (13) afterbody has, anti-perverse shell fragment (6) rear portion thread a needle on the rustless steel needle tubing (9) in hole (17).

5. Y formula as claimed in claim 1 is anti-stab puts that let the acupuncture needle remain at a certain point, it is characterized in that, the anterior outer wall of rustless steel needle tubing (9) has flat card stumble (14), this card (14) external diameter of stumbling is less than or equal to sleeve pipe (2) internal diameter, simultaneously, the stainless guiding principle needle tubing (9) in sleeve pipe (2) front inner wall has blood back observation port (18).

6. Y formula as claimed in claim 1 is anti-stab puts that let the acupuncture needle remain at a certain point, it is characterized in that, is connected and installed anti-perverse shell fragment (6) and core holder (7) structure between catheter block (3) and the needle stand (10).