CN208877551U - A kind of safe medical venous detaining needle - Google Patents

Abstract

The utility model discloses a kind of safe medical venous detaining needles, the soft needle of a ductus venosus is arranged on the injection needle of a needle stand front end, specifically include that a sheath, the sheath can be set in outside the needle stand, there is an at least guide rail on the sheath, the one or both sides of the guide rail have multiple sawtooth, and the side of the sawtooth is respectively provided with an approaching face and a delay face；The needle stand, the needle stand are equipped at least one trip adjacent to the side of injection needle, and the trip is threaded through in the guide rail.The utility model safe medical venous detaining needle, the glue film of sheath and pedestal disassembly are removed when use, and when needle stand being made to drive the injection needle withdraw of the needle, penetrate the block holding part of trip in the guide rail of sheath, and extend in operation portion outside sheath, and being retracted into medical staff can by press operating part and by injection needle in sheath, structure is simple, can be pricked by needle with effectively avoiding.

Description

A kind of safe medical venous detaining needle

Technical field

The utility model belongs to field of medical technology, and in particular to a kind of safe medical venous detaining needle.

Background technique

Structure is complicated for existing venous detaining needle, and higher cost is inconvenient to use, needs to improve.

Utility model content

One, technical problems to be solved

The technical problem to be solved by the present invention is to provide a kind of safe medical venous detaining needles, to solve the prior art Medium sized vein containing needle structure is complicated, higher cost, technical problem inconvenient to use.

Two, technical solution

To solve the technical problem, the technical scheme adopted by the utility model is a kind of safe medical venous indwelling Needle is arranged with the soft needle of a ductus venosus on the injection needle of a needle stand front end, specifically includes that a sheath, the sheath can be arranged Outside the needle stand, there is an at least guide rail, the one or both sides of the guide rail have multiple sawtooth, described on the sheath The side of sawtooth is respectively provided with an approaching face and a delay face；The needle stand, the needle stand are set adjacent to the side of injection needle There is at least one trip, the trip is threaded through in the guide rail.

The delay face with the angle of the guide rail is vertical or less than 90 degree, and the delay face be located away from it is described The injection needle direction of needle stand.

The trip includes a block holding part and an operation portion, and the block holding part is accommodated in the guide rail, and the behaviour It is extended in outside the sheath as portion, and the block holding part is at least tenon approaching face with the sawtooth effect and at least One tenon is detained face.

The guide rail is can have through the front end or rear and front end of the sheath, and on the guide rail one for disassembly The rear end of glue film, the sheath has a separable pedestal.

Further include a pedestal neck that can be connect with the guard trailing end.

There are an interconnecting piece solid with spiral shell, socket, glued or other modes to connect on the pedestal neck with the guard trailing end.

The sawtooth is averagely laid in the one or both sides of the guide rail.

The sawtooth is located at the rear and front end of the guide rail one or both sides.

The sawtooth is only defined the rear end of the one or both sides of the guide rail.

Three, beneficial effect

The utility model is compared to the prior art, has the following beneficial effects:

The utility model safe medical venous detaining needle is removed the glue film of sheath and pedestal disassembly when use, and makes When needle stand drives the injection needle withdraw of the needle, penetrate the block holding part of trip in the guide rail of sheath, and extend in operation portion outside sheath, And being retracted into medical staff can by press operating part and by injection needle in sheath, structure is simple, can be pricked by needle with effectively avoiding.

Detailed description of the invention

Fig. 1 is the stereo appearance figure of the utility model.

Fig. 2 is the stereogram exploded view of the utility model.

Fig. 3 is the schematic diagram at another visual angle of trip of the utility model.

Fig. 4 is use state action schematic diagram one in the first embodiment of the utility model.

Fig. 5 is use state action schematic diagram two in the first embodiment of the utility model.

Fig. 6 is use state action schematic diagram three in the first embodiment of the utility model.

Fig. 7 is the stereogram exploded view in the second embodiment of the utility model.

Fig. 8 is that the second embodiment of the utility model implements status diagram.

Fig. 9 is the stereogram exploded view of the 3rd embodiment of the utility model.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in detail.

As shown in Figure 1 to Figure 3, the utility model provides a kind of safe medical venous detaining needle comprising:

The soft needle 2 of one needle stand 1, a ductus venosus, a sheath 3, the needle stand 1 include an injection needle 11 and an at least trip 12, the injection needle 11 is located at the front end of the needle stand 1, and the trip 12 is located at the needle stand 1 adjacent to the side of injection needle 11 Portion, the trip 12 include an operation portion 121 and a block holding part 122, have a tenon approaching face 1221 on the block holding part 122 And one tenon be detained face 1222, the soft needle 2 of ductus venosus is set on the injection needle 11 of the needle stand 1, the ductus venosus Soft 2 one end of needle is extended with a hose 21, and the hose 21 is attached to the outside of the injection needle 11, has outside the sheath 3 At least one runs through the guide rail 31 of 3 front end of sheath, and the one or both sides of the guide rail 31 are equipped with multiple sawtooth 311, the saw The side of tooth 311 is respectively provided with an approaching face 3111 and a delay face 3112, and the delay face 3112 is located away from described 11 direction of the injection needle of needle stand 1, the delay face 3112 with the angle of the guide rail 31 be vertical or less than 90 degree, institute Stating has a dismountable glue film 32 on guide rail 31, the pedestal that the rear end of the sheath 3 can be isolated with the sheath 3 with one 33, in addition, the sheath 3 can be set in the outside of the needle stand 1, and the guide rail 31 is for the block holding part of the trip 12 In 122 plugs are located at, and the operation portion 121 of the trip 12 is made to extend in the guide rail 31 adjacent to the outside of 11 one end of injection needle.

It as shown in Figures 4 to 6, is the utility model safe medical venous detaining needle first embodiment, the utility model peace Full vein indwelling needle for medical purpose is in use, medical staff penetrates injection needle 11 in the injection site of patient together with hose 21, then Pressing touch hose 21 with breathable adhesive tape, the movement of liquid is injected or taken, and after the completion of injecting or taking liquid, by needle stand 1 By being extracted on the soft needle 2 of ductus venosus, and while extracting, pedestal 33 is separated with sheath 3 and by the glue film 32 on guide rail 31 It removes, enters the block holding part 122 of the needle stand 1 in the guide rail 31 of sheath 3, then medical staff is pierced by sheath 3 by pressing External operation portion 121 can make needle stand 1 drive injection needle by 12 follows track of trip, 31 a push-back to the rear end of guide rail 31 11 are retracted into sheath 3, so that sheath 3 is coated on 11 outside of injection needle and cover the sharp end 111 of 11 front end of injection needle, at this point, It is detained the 3112 phase contact of delay face in face 1222 with the sawtooth 311 and the guide rail 31 by the tenon of block holding part 122, makes needle stand 1 can not make the sharp end 111 of injection needle 11 not to be pierced by sheath 3 again, therefore pass through the utility model and cure safely again to pushing back It is coated in sheath 3 with the sharp end 111 of venous detaining needle, the injection needle 11 after use, pricks and occur to avoid needle, in addition, this Utility model safe medical venous detaining needle stops when 12 a push-back of trip to the rear end of guide rail 31, therefore, quite holds in operation Easily, and not it will cause Principle of Pain, and can avoid habituation and firmly pull back and needle is caused to prick, the utility model safe medical vein Containing needle structure is simple, therefore can effectively reduce production cost.

It as shown in Figure 7 and Figure 8, is the utility model safe medical venous detaining needle second embodiment, due to general quiet Vein in use, 1 rear end of needle stand connect sometimes a perfusion tube 4 for extract patient blood or conveying medical fluid to patient, and It is connect to make perfusion tube 4 that can be pierced by sheath 3 with test tube or drop, it is real in the utility model safe medical venous detaining needle second It applies in example, the guide rail 31 runs through the rear and front end of the sheath 3, after the pedestal 33 is separated with the sheath 3, is extracting blood After liquid or conveying medical fluid, pedestal neck 34 is connect with the rear end of the sheath 3, avoids needle stand 1 from being pierced by by the rear end of sheath 3, when this Utility model safe medical venous detaining needle in use, first pedestal 33 is removed, using perfusion tube 4 connect needle stand 1 and test tube or Drop, and extracting blood or after liquid medicine injection, then by pedestal neck 34 using an interconnecting piece 341 locking, socket, it is glued or The modes such as other are connect with the rear end of sheath 3, and when 1 a push-back of needle stand being made to enter sheath 3, pedestal neck 34 can be made to withstand needle stand 1, and Be pierced by needle stand 1 can not by the rear end of sheath 3.

As shown in figure 9, being the utility model safe medical venous detaining needle 3rd embodiment, the sawtooth 311 is only set to The rear and front end of the guide rail 31, therefore during 1 a push-back of needle stand is entered sheath 3, when trip 12 passes through among guide rail 31 When part without sawtooth 311, the delay face 3112 that trip 3 not will receive sawtooth 311 influences and injection needle 11 is caused to generate shake, Cause patient uncomfortable or generation feeling of pain because injection needle 11 shakes when can effectively avoid the withdraw of the needle, in addition, the utility model is safe In vein indwelling needle for medical purpose, the sawtooth 311 can also be only defined the rear end (not indicating in figure) of the guide rail 31, make injection needle 11 Behind the injection site for leaving patient completely, then by the sawtooth 311 of the push-in of trip 12 31 rear end of guide rail, make described Deng sawtooth 311 delay face 3112 and the tenon of trip 12 are detained 1222 phase contact of face, and push back needle stand 1 can not again.

The utility model has the advantage that

The utility model safe medical venous detaining needle is removed the glue film of sheath and pedestal disassembly when use, and makes When needle stand drives the injection needle withdraw of the needle, penetrate the block holding part of trip in the guide rail of sheath, and extend in operation portion outside sheath, And being retracted into medical staff can by press operating part and by injection needle in sheath, structure is simple, can be pricked by needle with effectively avoiding.

The above is only the specific application examples of the utility model, do not constitute any limit to the protection scope of the utility model System.

Claims (9)

1. a kind of safe medical venous detaining needle, which is characterized in that be arranged with a vein on the injection needle of a needle stand front end and lead Soft needle is managed, specifically includes that a sheath, the sheath can be set in outside the needle stand, there is an at least guide rail on the sheath, The one or both sides of the guide rail have multiple sawtooth, and the side of the sawtooth is respectively provided with an approaching face and a delay Face；The needle stand, the needle stand are equipped at least one trip adjacent to the side of injection needle, and the trip is threaded through the guide rail It is interior.

2. safe medical venous detaining needle according to claim 1, which is characterized in that the delay face and the guide rail Angle is vertical or less than 90 degree, and the delay face is located away from the injection needle direction of the needle stand.

3. safe medical venous detaining needle according to claim 1, which is characterized in that the trip include a block holding part with And an operation portion, the block holding part is accommodated in the guide rail, and the operation portion extends in outside the sheath, and the card Support, which has, is detained face with an at least tenon approaching face for the sawtooth effect and an at least tenon.

4. safe medical venous detaining needle according to claim 1, which is characterized in that the guide rail is through the sheath Front end or rear and front end, and can have one on the guide rail for the glue film of disassembly, the rear end of the sheath has one can divide From pedestal.

5. safe medical venous detaining needle according to claim 1, which is characterized in that further include one can with after the sheath Hold the pedestal neck of connection.

6. safe medical venous detaining needle according to claim 5, which is characterized in that have a connection on the pedestal neck Portion is solid by spiral shell, socket, connect in a manner of gluing with the guard trailing end.

7. safe medical venous detaining needle according to claim 1, which is characterized in that the sawtooth is averagely laid in described The one or both sides of guide rail.

8. safe medical venous detaining needle according to claim 1, which is characterized in that the sawtooth is located at the guide rail one The rear and front end of side or two sides.

9. safe medical venous detaining needle according to claim 1, which is characterized in that the sawtooth is only defined the guide rail One or both sides rear end.