CN2553808Y

CN2553808Y - Single-wing transfusion needle with safety device

Info

Publication number: CN2553808Y
Application number: CN 02218174
Authority: CN
Inventors: 李军生
Original assignee: Shanghai Kangdelai Enterprise Development Group Co Ltd
Current assignee: Zhejiang Kindly Medical Devices Co Ltd
Priority date: 2002-06-14
Filing date: 2002-06-14
Publication date: 2003-06-04
Anticipated expiration: 2012-06-14

Abstract

The utility model provides a single-wing transfusion needle with a safety device, which comprises a needle tube, a protecting sleeve for the needle tube, a transfusion tube, a needle seat and a single-wing needle handle connected with the side edge of the needle seat, and is characterized in further comprising a safety device protecting the needle tube. Wherein, the safety device is a sleeve with two communicated ends, the wall of the back end of the sleeve is opened with a slot for positioning the root of the single-wing needle handle, and a joint cutting extends from the front edge of the slot to the front end of the sleeve along the length direction of the sleeve. After using the transfusion needle, by pulling the transfusion tube, the utility model can drive the needle seat to enter into the front end of the sleeve so as to make the single-wing needle handle enter the joint cutting of the sleeve and drive the needle tube and the needle seat move backwards in the sleeve; when the root of the single-wing needle handle is clamped in the slot, the needle tube is stored in the safety device which is the sleeve. The utility model has the following advantages: 1. after using, the injection needle can be safely and easily stored; 2. The transfusion needle has simple structure and low producing cost; 3. the utility model promises seldom error puncture and sanitary discarding.

Description

A kind of single wing transfusion syringe with safety device

(1) technical field

This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of single wing transfusion syringe with safety device.

(2) background technology

Single wing transfusion syringe is indispensable medical apparatus and instruments such as venous transfusion, blood sampling.As shown in Figure 7, existing single wing transfusion syringe comprises needle tubing 1, needle tubing sheath 6, tube for transfusion 4, needle stand 2 and single-blade needle handle 3, and needle tubing 1 directly is bonded in the front end of needle stand 2, tube for transfusion 4 is fixedly connected on the rear end of needle stand 2, and the fixedly connected single-blade needle handle 3 of the lateral margin of needle stand 2.In addition, also sheathed needle tubing sheath 6 on the needle tubing 1.

After venous transfusion finished, the needle tubing sheath was not easy to continue to be inserted on the needle tubing, and outside needle tubing was exposed to mostly, medical personnel and patient were subjected to needle stick injury easily in cleaning, when discarding.At present, the pollution that causes because of puncture such as the mistake of transfusion needle, puncture needle etc. in the medical apparatus and instruments, infect and become social problem.Especially patients with infectious diseases, for example hepatitis, the used transfusion needle of AIDS VICTIMS need to be prudent in dealing with especially.Therefore people seek the effective ways of avoiding the mistake puncture to wait contingent to take place always energetically.

For example, China Patent No. is 95101192.8, denomination of invention is " the infusion syringe of band wing plate " disclosed a kind of infusion syringe construction, comprise the rear end of syringe needle, supporting syringe needle sleeve, be connected the pipe on the simple rear end of this cover and can accommodate the maintenance tube that remains on its inside to sleeve, wherein, wing plate is arranged on the front end that keeps tube.Sleeve can slide into the second position of its rear end along the inwall that keeps tube from the primary importance that keeps the tube front end.On sleeve and maintenance tube, be provided with the structure that to interosculate; when sleeve was keeping on the primary importance of tube, it was prevented from moving to second position direction, and when on the second position; it is prevented from moving to the primary importance direction, thereby needle container is protected.

Though above-mentioned infusion syringe can protect needle container; but; its protector and needle apparatus are one, therefore, and for guaranteeing that needle container is protected; rigid element length after its assembling is about the twice of common transfusion pin; when clinical transfusion, require patient to keep stiff position for a long time, otherwise, slight limbs bending; infusion needle is touched in the capital and piercing blood vessel brings serious injury.

(3) utility model content

The purpose of this utility model is to provide a kind of single wing transfusion syringe with safety device; this safety device can not only be accommodated needle tubing easily and be protected; avoid the mistake generation of phenomenon of puncturing, and use the single wing transfusion syringe of this band safety device not influence the limbs bending of transfusion patient.

A kind of single wing transfusion syringe with safety device provided by the utility model comprises needle tubing, needle tubing sheath, tube for transfusion, needle stand and the single-blade needle handle that is connected the needle stand lateral margin, and wherein: needle tubing is fixedly connected on the front end of needle stand; Tube for transfusion is fixedly connected on the rear end of needle stand; The needle tubing sheath is set on the needle tubing; it is characterized in that; it comprises that also one is enclosed within the safety device that is used to protect needle tubing on this transfusion needle; the sleeve pipe that this safety device communicates for former and later two ports; this telescopic length is greater than needle tubing and length after needle stand is fixedlyed connected; on the wall of this telescopic rear end, offer one for single-blade needle handle root localized slotted eye, and initially from the forward position of this slotted eye prolong described casing length direction joint-cutting to telescopic front port.

The single wing transfusion syringe of above-mentioned band safety device, wherein, telescopic front port is one by preceding sweptback angular cut, and described joint-cutting is positioned at the rear end of angular cut.

The single wing transfusion syringe of above-mentioned band safety device, wherein, the aperture of telescopic rear port and the external diameter of tube for transfusion be close-fitting mutually.

Adopted above-mentioned technical solution, after transfusion needle uses, as long as pulling tube for transfusion, just can drive needle stand and enter telescopic front port, make the single-blade needle handle enter telescopic joint-cutting, and drive needle tubing, needle stand and move after in sleeve pipe, after single-blade needle handle root snaps in slotted eye, slotted eye stops the single-blade needle handle more backward and move forward, this moment needle tubing to be collected in safety device be in the sleeve pipe.In addition, the aperture of telescopic rear port and the external diameter of tube for transfusion be close-fitting mutually, thereby safety device was moved freely before and after on the elasticity tube for transfusion, can rest on the optional position on the tube for transfusion again, when safety device is stayed the rear end of tube for transfusion, can carry out normal venous transfusion.The utlity model has following advantage: but first, use after safety, collect entry needle simply; The second, simple in structure, cost of manufacture is cheap; Three, be difficult for taking place the mistake puncture, can wholesomely discard; Four, the highly versatile of safety device can be widely used on vacuum blood taking needle, the product of machine with similar forms such as blood taking needles.

(4) description of drawings

Fig. 1 is the configuration state figure before this utility model uses;

Fig. 2 is the configuration state figure after this utility model uses;

Fig. 3 is the structural front view of safety device of the present utility model;

Fig. 4 is the structure upward view of safety device of the present utility model;

Fig. 5 is the A-A cutaway view among Fig. 4;

Fig. 6 is that this utility model is installed on the transfusion device and is the structural representation before using;

Fig. 7 is the structural representation of existing single wing transfusion syringe.

(5) specific embodiment

As shown in Figure 1, this utility model, promptly with the single wing transfusion syringe of safety device, the single-blade needle handle 3 and one that comprise needle tubing 1, needle tubing sheath 6, tube for transfusion 4, needle stand 2, is connected needle stand 2 lateral margins is enclosed within the safety device that is used to protect needle tubing 1 on this transfusion needle, and wherein: needle tubing 1 is fixedly connected on the front end of needle stand 2; Tube for transfusion 4 is fixedly connected on the rear end of needle stand 2; Needle tubing sheath 6 is set on the needle tubing.

As Fig. 3, Fig. 4 and shown in Figure 5, the sleeve pipe 7 that this safety device communicates for former and later two ports 71,72, the length of this sleeve pipe 7 is greater than needle tubing 1 and length after needle stand 2 is fixedlyed connected, on the wall of the rear end of this sleeve pipe 7, offer a localized slotted eye 73 of root for single-blade needle handle 3, and initially from the forward position of this slotted eye 73 prolong described sleeve pipe 7 length direction joint-cuttings to telescopic front port 71.The front port 71 of sleeve pipe 7 is one by preceding sweptback angular cut, and described joint-cutting 74 is positioned at the rear end 711 of angular cut.

The aperture of the rear port 72 of sleeve pipe 7 and the external diameter of tube for transfusion 4 be close-fitting mutually.

As shown in Figure 6, after this utility model is installed in transfusion device 9, after transfusion finishes, as shown in Figure 2, as long as pulling tube for transfusion 4, just can drive the angular cut 71 that needle stand 2 enters sleeve pipe 7 front ends, angular cut 71 impels single-blade needle handle 3 to be entered in the joint-cutting 74 of sleeve pipe 7 automatically by angular cut rear end 711, driving needle tubing 1, needle stand 2 moves after in sleeve pipe 7, snap in the slotted eye 73 until single-blade needle handle 3, slotted eye 73 stops single-blade needle handles 3 more backward or move forward, this moment needle tubing 1 to be collected in safety device be in the sleeve pipe 7.

In addition, the aperture of sleeve pipe 7 rear ports is slightly less than the external diameter of elasticity tube for transfusion 4, thereby safety device front and back on the elasticity tube for transfusion were moved freely, can make safety device rest on optional position on the elasticity tube for transfusion again, when safety device is stayed the rear end of tube for transfusion 4, can carry out normal venous transfusion.

Claims

1. the single wing transfusion syringe with safety device comprises needle tubing, needle tubing sheath, tube for transfusion, needle stand and the single-blade needle handle that is connected the needle stand lateral margin, and wherein: needle tubing is fixedly connected on the front end of needle stand; Tube for transfusion is fixedly connected on the rear end of needle stand; The needle tubing sheath is set on the needle tubing; it is characterized in that; it comprises that also one is enclosed within the safety device that is used to protect needle tubing on this transfusion needle; the sleeve pipe that this safety device communicates for former and later two ports; this telescopic length is greater than needle tubing and length after needle stand is fixedlyed connected; on the wall of this telescopic rear end, offer one for single-blade needle handle root localized slotted eye, and initially from the forward position of this slotted eye prolong described casing length direction joint-cutting to telescopic front port.

2. a kind of single wing transfusion syringe with safety device according to claim 1 is characterized in that: described telescopic front port is one by preceding sweptback angular cut, and described joint-cutting is positioned at the rear end of angular cut.

3. a kind of single wing transfusion syringe with safety device according to claim 1 and 2 is characterized in that: the aperture of described telescopic rear port and the external diameter of tube for transfusion be close-fitting mutually.