CN206526328U - A kind of safety-type internal-fistula needle - Google Patents

Abstract

The utility model discloses a kind of safety-type internal-fistula needle, include needle stand, sheath, the sheath includes through hole, and the needle stand can pass through described through hole, and the periphery two ends of the sheath are provided with two fixed-wings, the front end face of the needle stand is provided with mounting hole, it is fixed with the mounting hole on puncture needle, the front and rear of the needle stand and is respectively equipped with the first neck and the second neck, the distance between first neck and the second neck is not less than the length of puncture needle；The rear end of the sheath includes Access Division, and the Access Division is soft plastic injection molding, and the inner surface of the Access Division includes buckle, and the buckle can be abutted with the first neck or the second neck.The utility model is by using the buckle structure inside sheath so that sheath can cause needle stand is fixed with respect to sheath to be ignorant of, so that puncture needle can be built-in with sheath, efficiently avoid the unexpected generation that needle point is hurted sb.'s feelings.

Description

A kind of safety-type internal-fistula needle

Technical field

The utility model is related to a kind of medicine equipment articles for use, particularly internal-fistula needle.

Background technology

Haemodialysis refers to utilize apparatus for purifying blood（That is artificial kidney）, remove the various toxin in uremic patient blood And excessive moisture, while supplementing various benefit materials, reach the purpose of purification blood.Haemodialysis is that treatment is uremic conventional One of means, can effectively maintain the life of uremic patient.Uremic patient must first be built before hemodialysis are received Found a vascular access.And internal arteriovenous fistula solves the problems, such as the vascular access of uremic patient long-term dialysis, it is presently the most Safety, the most economic and most long vascular access of holding time.

Essential medicine equipment in when internal-fistula needle is hemodialysis, it mainly punctures needle tubing, pin by stainless steel The wing, body, vessel clamp, joint etc. are constituted.In hemodialysis, by puncturing patient's arteriovenous internal fistula, and with following in vitro Endless tube road and dialyzer connection, form the extracorporal circulatory system path of blood.It is typically once dialysed（About 4 hours time）Complete Afterwards, it is unplugged and abandons and uses.So so that the drawbacks of existing internal-fistula needle has larger：After internal fistula puncture needle has been used, Needle point is directly exposed outside.The exposed needle point of patient blood was contacted, often to medical personnel and waste treatment people Member damages, and triggers the infection and propagation of blood borne disease.

Utility model content

The technical problems to be solved in the utility model is：Offer is a kind of effectively to protect the new type of safe internal-fistula needle of needle point.

The solution that the utility model solves its technical problem is：A kind of safety-type internal-fistula needle, includes needle stand, shield Set, the sheath includes through hole, and the needle stand can pass through described through hole, and the periphery two ends of the sheath are provided with two fixations The wing, the front end face of the needle stand, which is provided with mounting hole, the mounting hole, is fixed with puncture needle, the front and rear of the needle stand On be respectively equipped with the first neck and the second neck, the distance between first neck and the second neck be not less than puncture needle length Degree；The rear end of the sheath includes Access Division, and the Access Division is soft plastic injection molding, the inner surface of the Access Division Include buckle, the buckle can be abutted with the first neck or the second neck.

As the further improvement of above-mentioned technical proposal, the outer surface of the Access Division includes outstanding extruding handle Hand, the squeeze handles have two, and two squeeze handles are located at the side of left and right two of Access Division respectively, and the buckle is located at the card The top of socket part inner surface.

As the further improvement of above-mentioned technical proposal, the Access Division also includes grooving, the grooving with left and right The inner surface of the squeeze handles on both sides intersects.

As the further improvement of above-mentioned technical proposal, the through-hole wall is provided with guiding groove, and the needle stand is provided with Rib is oriented to, the guiding rib is connected with guiding groove；First neck and the second neck, which are located at, to be oriented on rib；The buckle is located at On guiding groove.

The beneficial effects of the utility model are：The utility model is by using the buckle structure inside sheath so that sheath It can cause needle stand is fixed with respect to sheath to be ignorant of, so that puncture needle can be built-in with sheath, efficiently avoid needle point and hurt sb.'s feelings Unexpected generation.

Brief description of the drawings

, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the utility model embodiment The accompanying drawing to be used is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present utility model, rather than entirely Portion's embodiment, those skilled in the art on the premise of not paying creative work, can also obtain it according to these accompanying drawings His design and accompanying drawing.

Fig. 1 is assembling schematic diagram of the present utility model；

Fig. 2 is needle stand stereogram of the present utility model；

Fig. 3 is sheath stereogram of the present utility model；

Fig. 4 is the cross section view of sheath of the present utility model.

Embodiment

The technique effect of design of the present utility model, concrete structure and generation is carried out below with reference to embodiment and accompanying drawing Clearly and completely describe, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment It is a part of embodiment of the present utility model, rather than whole embodiments, based on embodiment of the present utility model, the skill of this area The other embodiment that art personnel are obtained on the premise of not paying creative work, belongs to the model of the utility model protection Enclose.In addition, all connection/annexations being previously mentioned in text, not singly refer to component and directly connect, and refer to can be according to specific reality Situation is applied, by adding or reducing couple auxiliary, to constitute more excellent draw bail.Each technology in the invention is special Levy, can be with combination of interactions on the premise of not conflicting conflict.

A kind of 1~Fig. 4 of reference picture, safety-type internal-fistula needle includes needle stand 1, and sheath 2, the sheath 2 includes through hole 21, the needle stand 1 can pass through described through hole 21, and the periphery two ends of the sheath 2 are provided with two fixed-wings, the needle stand 1 Front end face, which is provided with mounting hole 11, the mounting hole 11, is fixed with puncture needle, and the front of the needle stand 1 is provided with the first neck 12nd, the distance that rear is provided between the second neck 13, the neck 13 of the first neck 12 and second is not less than the length of puncture needle Degree；The rear end of the sheath 2 includes Access Division 22, and the Access Division 22 is soft plastic injection molding, the Access Division 22 Inner surface include buckle 221, the buckle 221 can be abutted with the first neck 12 or the second neck 13.

When buckle 221 is abutted with the second neck 13, needle point is completely exposed, can carry out puncture procedure, and as behaviour After the completion of work, pass through firmly extruding Access Division so that Access Division is deformed upon, and then cause buckle and the second exact separation, this When needle stand can draw back, when puncture needle complete recede into sheath when, unclamp Access Division so that buckle and the first neck Clamping is carried out, now puncture needle has been defined in sheath, be efficiently avoid needle point and is hurted sb.'s feelings.Certainly, for convenient for production, institute State whole sheath can use soft plastic injection molding, or still with regard to Access Division use soft plastic injection molding, so The remainder of Access Division and sliding sleeve is attached by bonding way afterwards.

It is further used as preferred embodiment, the outer surface of the Access Division 22 includes outstanding squeeze handles 222, the squeeze handles 222 have two, and two squeeze handles 222 are located at the side of left and right two of Access Division 22, the buckle respectively 221 are located at the top of the inner surface of Access Division 22.By squeeze handles, it can cause lighter when Access Division is operated It is convenient, reduce the labor intensity of medical personnel.

Be further used as preferred embodiment, the Access Division 22 also includes grooving 223, the grooving 223 with The inner surface of the squeeze handles 222 of the right and left intersects.Likewise, by adding a grooving, can cause in extruding clamping When portion, the deformation of Access Division is lighter, and buckle is easier to separate with the connection of neck.

It is further used as preferred embodiment, the inwall of through hole 21 is provided with guiding groove 211, the needle stand 1 and set There is guiding rib 14, the guiding rib 14 is connected with guiding groove 211；The neck 13 of first neck 12 and second, which is located at, is oriented to rib 14 On；The buckle 221 is located on guiding groove 211.By guiding groove and the cooperation for being oriented to rib, needle stand can be prevented in moving process In rotate, so as to improve the connection precision of buckle and neck.

Better embodiment of the present utility model is illustrated above, but the invention be not limited to it is described Embodiment, those skilled in the art can also make a variety of equivalent changes on the premise of without prejudice to the utility model spirit Type or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.

Claims (4)

1. a kind of safety-type internal-fistula needle, includes needle stand（1）, sheath（2）, the sheath（2）Include through hole（21）, the pin Seat（1）Described through hole can be passed through（21）, the sheath（2）Periphery two ends provided with two fixed-wings, it is characterised in that：It is described Needle stand（1）Front end face be provided with mounting hole（11）, the mounting hole（11）On be fixed with puncture needle, the needle stand（1）Before Side on rear with being respectively equipped with the first neck（12）With the second neck（13）, first neck（12）With the second neck（13） Between distance be not less than puncture needle length；The sheath（2）Rear end include Access Division（22）, the Access Division（22）For Soft plastic injection molding, the Access Division（22）Inner surface include buckle（221）, the buckle（221）Can be with first Neck（12）Or second neck（13）Abut.

2. safety-type internal-fistula needle according to claim 1, it is characterised in that：The Access Division（22）Outer surface include Outstanding squeeze handles（222）, the squeeze handles（222）There are two, two squeeze handles（222）It is located at clamping respectively Portion（22）The side of left and right two, the buckle（221）Positioned at the Access Division（22）The top of inner surface.

3. safety-type internal-fistula needle according to claim 2, it is characterised in that：The Access Division（22）Also include grooving （223）, the grooving（223）With the squeeze handles of the right and left（222）Inner surface intersect.

4. safety-type internal-fistula needle according to claim 1, it is characterised in that：The through hole（21）Inwall is provided with guiding groove （211）, the needle stand（1）Provided with guiding rib（14）, the guiding rib（14）With guiding groove（211）Connection；First card Groove（12）With the second neck（13）Positioned at guiding rib（14）On；The buckle（221）Positioned at guiding groove（211）On.