CN201353148Y

CN201353148Y - Disposable hemostix

Info

Publication number: CN201353148Y
Application number: CNU2009200886163U
Authority: CN
Inventors: 牛留栓
Original assignee: ZHENGZHOU YOUDE INDUSTRIAL CO LTD
Current assignee: ZHENGZHOU YOUDE INDUSTRIAL CO LTD
Priority date: 2009-02-20
Filing date: 2009-02-20
Publication date: 2009-12-02
Anticipated expiration: 2019-02-20

Abstract

The utility model discloses a disposable hemostix comprising a casing, a needle base and a spring. A catapulting cavity is arranged inside the casing; a blood-taking needle is fixedly connected with the lower end of the needle base; the upper end of the needle base is connected with the spring; the needle base and the spring are arranged inside the catapulting cavity and connected into an elastic sliding structure in the catapulting direction; a clamp catapulting structure is arranged between the needle base and the casing in the spring compression route; and the clamp catapulting structure comprises a third elastic arm and a bayonet arranged on the casing; and a suspension arm end of the third elastic arm matches with the bayonet to form a locking structure. The special clamp catapulting structure is simpler and easier to manufacture and mount; other components such as all the elastic arms have simple shape and can be easily manufactured and mounted, thus effectively reducing cost; a buckling cover is fastened on the casing but is not integrated with the casing, thus leading the manufacturing to be easier and the mounting to be more convenient; a chute is arranged on the casing and a sliding block is arranged corresponding to the needle base so as to lead the needle base to be smoothly catapulted under the action of the spring and avoid clamping stagnation.

Description

Disposable blood taking device

Technical field

This utility model relates to the medical treatment blood sampling and uses pin, especially relates to a kind of disposable blood taking needle utensil.

Background technology

Disposable blood taking device is used to gather blood, and disposable preventing reused, and effectively prevents infectious problem.Chinese patent ZL01245140.1 " a kind of novel card is penetrated the disposable safe automatic blood sampler of structure ", but its housing is an integral body, very inconvenient when making in housing mounting spring, blood taking needle; The spring At time of eject drives the blood taking needle motion, the needle stand of blood taking needle and inner walls direct friction, the situation that might occur slides has some setbacks, thereby influence blood sampling; Be connected the complex-shaped of elastic arm B on the housing, make and install all very inconvenient.

The utility model content

The purpose of this utility model be to provide a kind of manufacturing easy to assembly, launch disposable blood taking device smoothly.

The technical solution of the utility model is:

Disposable blood taking device, comprise housing, needle stand and spring, be provided with ejection chamber in the housing, the needle stand lower end is fixedly connected with blood taking needle, the needle stand upper end is connected with spring, and needle stand and spring place in the ejection chamber and connect into the Elastic Sliding structure on direction of ejection, are provided with card between needle stand and the housing on the spring compressed path and penetrate structure, described card is penetrated structure and is comprised the 3rd elastic arm and the bayonet socket that is located on the housing, and the cantilever end of the 3rd elastic arm and bayonet fittings constitute latch-up structure.

Described card is penetrated structure and is also comprised extended second elastic arm from the housing, and the cantilever end of second elastic arm is near to or in contact with the cantilever end of the 3rd elastic arm.

Correspondence is provided with chute in the described housing, and the bearing of trend of chute is consistent with the direction of ejection of blood taking needle; On needle stand, be provided with the sliding shoe adaptive with the chute width.

Described housing one end also is connected with buckle closure, and buckle closure forms buckle with housing and is connected.

Described buckle closure both sides are fixedly connected with hook, and correspondence is provided with and links up with the suitable mouth hanging in position in the housing both sides

This utility model compared with prior art has the following advantages:

It is simpler that unique card is penetrated structure, easier manufacturing and installation; Other each parts such as each elastic arm simple shape are made, are assembled simply, and reduced cost effectively; Be connected with buckle closure on the housing, rather than global formation, so just be easier to manufacturing and convenient for assembly; Chute is set on housing, and corresponding sliding shoe is set on needle stand, it is more smooth and easy to make that needle stand launches under spring action, avoids occurring catching phenomenon; If save second elastic arm, can also avoid before use causing the problem that to use because of assembling, transportation have triggered to launch.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the sketch map after blood taking needle of the present utility model ejects.

The specific embodiment

As shown in Figure 1, this utility model comprises housing 15, is provided with ejection chamber 16 in the housing.Housing 15 upper end open places are connected with buckle closure 6, be equipped with two hooks 7 about buckle closure 6 lower ends, the lower end of hook 7 is provided with the hook to outer lug, and correspondence is respectively equipped with mouth hanging 9 on two sides, housing 15 upper end, the hook of hook 7 can fasten mouth hanging 9, forms stable buckle and connects.

Buckle closure 6 mid portions are provided with projection and are connected with the upper end of spring 5 chucking, spring 5 lower ends connection needle stand 2, spring 5 in Fig. 1 for being in battery by compression.Needle stand 2 lower ends are fixed with blood taking needle 1.The oblique cantilever end that is provided with the 3rd elastic arm 4, the three elastic arms 4 in the right side of needle stand 2 is stuck in the bayonet socket 11, and bayonet socket 11 is located on the side, right side of housing 15.Be provided with first elastic arm 3 in needle stand 2 left sides, corresponding on housing 15 inwall left surfaces, be provided with block 10, blood taking needle 1 not At time of eject first elastic arm 3 cantilever ends be pressed on the block 10, the cantilever end of first elastic arm 3 is higher than block 10.

Both sides all vertically are provided with chute 14 before and after on housing 15 inwalls, and correspondence is interval with a plurality of (shown in the figure being 3) sliding shoe 13 from top to bottom successively in both sides, needle stand 2 front and back, and the width of each sliding shoe 13 is all suitable with the width of chute 14.

The cantilever end that is fixedly connected with second elastic arm, 8, the second elastic arms 8 in needle stand 2 right hand external is provided with projection, and the position of projection is corresponding with bayonet socket 11.

Also be provided with needle outlet passes for blood taking needle in the lower end of housing 15.Corresponding blood taking needle 1 also is provided with needle guard 12, and needle guard 12 is used to protect blood taking needle 1.

As shown in Figure 2, during use, take off needle guard 12, push the cantilever end of second elastic arm 8 left, the cantilever end of the 3rd elastic arm 4 is deviate from from bayonet socket 11, and needle stand 2 moves downward under spring 5 effects, and sliding shoe 13 slides along chute 14, first elastic arm, 3 cantilever ends slide to block 10 belows, and the syringe needle of the blood taking needle 1 on the needle stand 2 reaches outside the housing.Because block 10 is blocked in first elastic arm, 3 upper ends, upwards spur needle stand 2 even take off buckle closure 6 like this, can not make needle stand 2 get back to original position yet, guaranteed that effectively this utility model can only use once.

Need to prove at last, second elastic arm 8 of the present utility model can save, trigger and launch and directly adopt fingernail or other sharp thing to push the 3rd elastic arm 4, can also avoid so before use causing the problem that to use because of assembling, transportation have triggered to launch.

Claims

1, disposable blood taking device, comprise housing, needle stand and spring, be provided with ejection chamber in the housing, the needle stand lower end is fixedly connected with blood taking needle, the needle stand upper end is connected with spring, and needle stand and spring place in the ejection chamber and connect into the Elastic Sliding structure on direction of ejection, are provided with card between needle stand and the housing on the spring compressed path and penetrate structure, it is characterized in that: described card is penetrated structure and is comprised the 3rd elastic arm and the bayonet socket that is located on the housing, and the cantilever end of the 3rd elastic arm and bayonet fittings constitute latch-up structure.

2, disposable blood taking device according to claim 1 is characterized in that: described card is penetrated structure and is also comprised extended second elastic arm from the housing, and the cantilever end of second elastic arm is near to or in contact with the cantilever end of the 3rd elastic arm.

3, disposable blood taking device according to claim 1 and 2 is characterized in that: correspondence is provided with chute in the described housing, and the bearing of trend of chute is consistent with the direction of ejection of blood taking needle; On needle stand, be provided with the sliding shoe adaptive with the chute width.

4, according to claim 1 or 3 described disposable blood taking devices, it is characterized in that: described housing one end also is connected with buckle closure, and buckle closure forms buckle with housing and is connected.

5, disposable blood taking device according to claim 4 is characterized in that: described buckle closure both sides are fixedly connected with hook, and correspondence is provided with and links up with the suitable mouth hanging in position in the housing both sides.