CN2479989Y - Safety syringe with return back type syringe needle - Google Patents

Abstract

A safe injector with a retracting injection needle consists of a needle body, a needle seat, a needle body collecting tube, a needle cylinder and a plunger, which is characterized in that the needle body comprises a steel needle and a plastic connecting body, and the needle seat is provided with a fluid hole which has two channels. A plurality of small sized grooves which are surrounded the needle body hole and tightly engaged with the small bodies on the needle body, thereby the needle body can be ensured and also the needle body can be retracted after breaking. The front end of the needle body collecting tube is provided with a round rotating disc with two fluid holes and a needle body retracting hole is arranged in the center of the round rotating disc. The front end of the needle cylinder is provided with a needle cylinder front disk and the back end is provided with a needle cylinder cover. The front end of the plunger is provided with a pushing plate and the back end is provided with a plunger handle, and a sleeve tube is arranged in the center of the plunger and a pair of side wings is arranged on two sides of the central sleeve tube.

Description

High-safety injector with withdrawn needle

This utility model relates to syringe, and outstanding pointed injection device is after injection finishes, and operator only need plunger is rotated to an angle, just can with after needle body bounce back to the syringe internal fixation and preserve, prevent the high-safety injector with withdrawn needle that syringe uses repeatedly.

Present syringe finds that after deliberation the needle point of conventional syringe is stabbed the cause of disease that might cause some blood propagations, as HIV, and the infection of second, the scorching virus of hepatitis C.And present medical personnel and clinical waste cleaning, treatment people is all being endured this class to the fullest extent and is being threatened.In addition, because original syringe or country specify the disposable syringe that uses, have repeatedly used condition, these are still utilized by drug addiction gentleman and lawless person and use repeatedly, and this has caused another approach that spreads disease former infection or disseminate through blood.In order to reduce or eliminate above-mentioned all kinds of risk factors, must be improved.

The purpose of this utility model is to provide a kind of high-safety injector with withdrawn needle, have needle body fracture after operation is finished, bounce back, fixedly be kept at the characteristics in the needle body collecting pipe, reduce or eliminate that entry needle is stabbed and the pathogenic infection that brings, the use repeatedly of stopping syringe.

For reaching above-mentioned purpose, high-safety injector with withdrawn needle of the present utility model, by needle body, needle stand, the needle body collecting pipe, syringe and plunger are formed, be characterized in: needle body, constitute by draw point and plastic connecting body, the plastic connecting body front portion is for hollow and a side opening is arranged, be provided with several chassis around the upper end outer wall in hole and be connected the embedding corpusculum, have in the effect fixing and fracture of rotation back, on the top of plastic connecting body is a square plastic piece, and the effect of conduction rotation needle body is arranged, and a spring is placed in the outside of plastic connecting body, after being connected corpusculum rotation fracture, needle body can be rebounded is collected in the needle body collecting pipe; The needle stand chassis is provided with the liquid flow hole of two passages, liquid flow hole by the one side, the liquid flow hole of a side constitutes a passage through entry needle on needle body side opening and the syringe shroud, after rotating to an angle, this pathway closure, another passage of being separated by is opened, around upper pin hole, needle stand chassis, be provided with several needle bodies and embed the corpusculum groove, be connected the embedding corpusculum with the needle body chassis closely chimeric, have fixedly needle body and after the rotation fracture, loosen the effect that needle body makes its retraction, the needle stand chassis edge is a syringe pressing mold convergence body, with the syringe socket; The needle body collecting pipe, its front end is one to have the circular rotation disc of two liquid flow holes, its center is needle body retraction hole, rotation disc places between needle stand chassis and the syringe shroud, have the flow liquid of adjusting direction and help rotation, retraction, the function of collecting needle body are provided with gasket recess at its back, can place a rubber washer; With the sealing between reinforcement and syringe shroud; Syringe, the profile of its needle cylindrical unit is square, or it is circular, or oval, its inside is circular syringe endoporus, its front end has a syringe shroud, have on it and corresponding pin hole in needle stand chassis and liquid flow hole, its tail end has the syringe lid connector syringe lid that can link closely, and is provided with two projections at syringe lid inwall and cooperates plunger flank may command plunger accurately to rotate to an angle, and the syringe lid can prevent that also plunger and broken needle from skidding off; Plunger, its front end is provided with the plunger pushing plate, the rear end is provided with plunger handle, and its center is a pipe box, and the cylindrical central sleeve both sides are provided with a pair of flank, its front end is provided with tapered plunger rubber union joint, and socket one plunger rubbery loop, a bellmouth and through hole are arranged in it, periphery is provided with several outward flanges, the through hole inwall also has several inward flanges, has the effect of glade plane space between sealed plunger center sleeve and needle body collecting pipe.

The advance and the advantage of high-safety injector with withdrawn needle of the present utility model are as follows:

1. can substitute conventional syringe fully; its security protection technology device is the global design inalienable part, and its safety has guaranteed to be kept in the syringe reliably by the safety of exhausted entry needle; and when whole syringe was not disintegrated fully, its safety guard still played effect.Simultaneously this safety guard does not influence medical worker's the inspecting of entry needle and syringe when operation.

2. safety, reliable, prevent the use repeatedly of syringe, behind operator's complete operation, reliably with injection needle restoring to syringe, deposit safely, avoid this syringe to stab wound other people and be used once more.

3. operate simple and easyly, need not or seldom need before using this product, train user.

4. the syringe after using bounces back because of needle body; in the protection Environmental security, also reduced expense to medical sharp object special handling; because of outstanding outside with the no needle body in back; reduced shared space in medical sharp-pointed refuse receptacle; reduced the volume of this type of hazardous waste; reduced disposal cost, safe medical waste is provided.

5. resemblance is square or oval-shaped syringe, the gripping when being convenient to humidity or having safety gloves; Fixed needle body safety and sanitation, handled easily, and increase work efficiency; Pin with world standard makes the size of the easier identification entry needle of medical personnel through color coordinates will, reduces the generation of malpractice.

Below in conjunction with accompanying drawing structure of the present utility model, technical characterictic are described further.

Description of drawings: Fig. 1 is that structural representation Fig. 2 of the present utility model is needle structure figure of the present utility model.Fig. 3 is the side diagrammatic sketch of Fig. 2.Fig. 4 is a needle stand axonometric chart of the present utility model.Fig. 5 is the cut-away view of Fig. 4.Fig. 6 is the side view of Fig. 4.Fig. 7 is a needle body collecting pipe of the present utility model.Fig. 8 is the side view of Fig. 7.Fig. 9 is syringe cylinder structure figure of the present utility model.Figure 10 is the left side view of Fig. 9.Figure 11 is the right side view of Fig. 9.Figure 12 is a syringe lid of the present utility model.Figure 13 is piston structure figure of the present utility model.Figure 14 is the right side view of Figure 13.Figure 15 is a plunger rubbery loop of the present utility model.：1--- 11--12-- 13--14-- 15--16-- 2--21-- 22--23-- 24--25-- 26--27-- 28--29-- 3--31-- 32--33-- 34--35-- 36--37-- 4--41-- 42--43-- 44--45-- 46--47-- 48--5-- 51--52-- 53--54-- 55--56-- 57--58-- 581--59-- 591--

Embodiment: at first see also shown in Figure 1, high-safety injector with withdrawn needle of the present utility model, by needle body 1, needle stand 2, needle body collecting pipe 3, syringe 4 and plunger 5 are formed, its characteristics are: needle body 1, constitute by draw point 11 and plastic connecting body 14, plastic connecting body 14 front portions are for hollow and a side opening 12 is arranged, be provided with several chassis around the upper end outer wall in hole and be connected embedding corpusculum 13, have in the effect fixing and fracture of rotation back, the normal running and the retraction needle body collecting pipe 3 that guarantee whole needle body 1 are built-in, on the top of plastic connecting body 14 is a square plastic piece 15, the effect of conduction rotation needle body is arranged, and a spring 16 is placed in the outside of plastic connecting body 14, after being connected corpusculum rotation fracture, needle body 1 can be rebounded, be collected in the needle body collecting pipe 3; Needle stand 2 is provided with the needle stand liquid flow hole 25 of two passages, by the passage of 25 formations of the liquid flow hole on needle body side opening 23 and the needle stand chassis 26 through entry needle, as needle body 1 behind retraction, the liquid flow hole 25 of this side is closed, and the liquid flow hole of opposite side is opened, another passage of being separated by of liquid turnover just having passed through, several needle bodies that are provided with all around in 26 upper pin holes embed corpusculum groove 28 on the needle stand chassis, be connected embedding corpusculum 13 with the needle body chassis closely chimeric, have fixedly needle body and after the rotation fracture, loosen the effect that needle body makes its retraction, the needle stand chassis edge is a syringe pressing mold convergence body 29, with the syringe socket, the plastics needle body seat 24 of needle stand 2 front ends is chimeric connection of sealing with the plastic connecting body 14 of needle body 1; Needle body collecting pipe 3, its front end is one to have the circular rotation disc 32 of two liquid flow holes 36, its center is needle body retraction hole 31, rotation disc 32 places between needle stand chassis 26 and the syringe shroud 41, have the regulator solution flow path direction and help to place rotation, retraction, collect the function of needle body, be provided with gasket recess 33 at its back, can place a rubber washer 37, with the sealing between reinforcement and syringe shroud, be connected in this square collecting pipe 35, can transmit revolving force effectively to the square plastic piece 15 of needle body end, the chassis that is positioned on the needle body 1 is connected embed corpusculum 13 fractures, the needle body retraction also remains in its square collecting pipe 35; Syringe 4, the profile of its pin simplified 44 can be square, circle or oval, inside is circular syringe endoporus 45, at front end one syringe shroud 41 is arranged, have on it and needle stand chassis 26 corresponding needle body hole 42 and liquid flow holes 43, the syringe lid connector 46 syringe lid 47 that can link closely is arranged at its tail end, cover 47 inwalls at syringe and be provided with two inwall projections 48, cooperate plunger flank 55, may command plunger 5 is rotation 45 degree accurately, and syringe lid 47 can prevent that plunger 5 and broken needle from skidding off simultaneously; Plunger 5, its center is a quadrate sleeve pipe, be close to outside the needle body collecting pipe 3, the structure of the side of its front end tapered plunger rubber union joint 52 and plunger pushing plate 54 has guaranteed that connected plunger rubbery loop 57 can be up and down, the effect of rocking around the non-movable piston is arranged, the rear end is provided with plunger handle 56, one side's coniform hole 581 and square through hole 58 are arranged in the plunger rubbery loop 57, periphery has several outward flanges 59, through hole 58 inwalls also have several inward flanges 591, effect with sealed plunger center sleeve 53 and 3 glade plane spaces of needle body collecting pipe is provided with a pair of plunger flank 55 in the both sides of center sleeve 53, has the effect of control steering angle.

Claims (6)

1, a kind of high-safety injector with withdrawn needle is made up of needle body, needle stand, needle body collecting pipe, syringe and plunger, it is characterized in that:

Needle body is made of draw point and plastic connecting body, and the plastic connecting body front portion is for hollow and a side opening is arranged, and is provided with several chassis around the upper end outer wall in hole and is connected the embedding corpusculum, and the top of plastic connecting body is a square plastic piece, and a spring is placed in the outside of connector;

The needle stand chassis is provided with the liquid flow hole of two passages, and the liquid flow hole by a side on needle body and the syringe shroud constitutes a passage through entry needle, is provided with several needle bodies and embeds the corpusculum groove around upper pin hole, needle stand chassis;

Needle body collecting pipe, its front end are one to have the circular rotation disc of two liquid flow holes, and its center is needle body retraction hole, and rotation disc places between needle stand chassis and the syringe shroud;

Syringe, the inside of its needle cylindrical unit are circular syringe endoporus, and its front end has a syringe shroud, have on it and corresponding pin hole in needle stand chassis and liquid flow hole, and its tail end has the syringe lid connector syringe lid that can link closely;

Plunger, its front end is provided with the plunger pushing plate, and the rear end is provided with plunger handle, and its center is a sleeve pipe, and the center sleeve both sides are provided with a pair of flank.

2, high-safety injector with withdrawn needle according to claim 1 is characterized in that: said syringe, its profile are square or are circular, or oval.

3, high-safety injector with withdrawn needle according to claim 1 is characterized in that: described syringe lid, its inwall is provided with two projections.

4, high-safety injector with withdrawn needle according to claim 1 is characterized in that: described plunger rubbery loop, a through hole and a coniform hole are arranged in it, and periphery is provided with several outward flanges, and the through hole inwall also has several inward flanges.

5, high-safety injector with withdrawn needle according to claim 1 is characterized in that: the rotation disc of described needle body collecting pipe, and its back is provided with gasket recess, can place a rubber washer;

6, high-safety injector with withdrawn needle according to claim 1 is characterized in that: described notes plug center sleeve, its front end are provided with tapered plunger rubber union joint, and socket one plunger rubbery loop.

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