WO2006102790A1 - A safety syringe with a needle hub - Google Patents

A safety syringe with a needle hub Download PDF

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Publication number
WO2006102790A1
WO2006102790A1 PCT/CN2005/000399 CN2005000399W WO2006102790A1 WO 2006102790 A1 WO2006102790 A1 WO 2006102790A1 CN 2005000399 W CN2005000399 W CN 2005000399W WO 2006102790 A1 WO2006102790 A1 WO 2006102790A1
Authority
WO
WIPO (PCT)
Prior art keywords
portion
base
needle
syringe
provided
Prior art date
Application number
PCT/CN2005/000399
Other languages
French (fr)
Chinese (zh)
Inventor
Wei-Shui Wu
Original Assignee
Wei-Shui Wu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wei-Shui Wu filed Critical Wei-Shui Wu
Priority to PCT/CN2005/000399 priority Critical patent/WO2006102790A1/en
Publication of WO2006102790A1 publication Critical patent/WO2006102790A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/3205Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321Means for protection against accidental injuries by used needles
    • A61M5/322Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston

Abstract

A safety syringe with a needle hub, which comprises: a syringe barrel, a push rod, a needle hub and a needle sheath, wherein the needle hub is installed inside the container part of the syringe in resist status. After a medicine is injected, the holding part of the push rod will enter the base of the needle hub to make the wall of the base become a conical wall gradually, and then make the holding part and concave-buckle part of the push rod connect with the linking part and positioning part of the base. After connection, the outer diameter size of the base is still a little smaller than the inner diameter size of the circular-convex part. Therefore, after use and pull out the push rod, the needle hub will be departed from the container part and stored inside the syringe barrel.

Description

TECHNICAL FIELD safety syringe needle hub

The present invention relates to a safety syringe having a needle hub, and more particularly to a syringe with a needle hub after use, the needle holder may be retracted in the syringe of the collection safety syringe. current technology

A safe injection device not only for patients, medical staff, the environment and safety of the public have a positive help, not only part of its processing equipment and injection after injection equipment, and help reduce re-use disposable injection devices, or reduce the continuous use of shared needles or syringes, or other non-technical operations incorrectly safe injection behavior; some more medical and health institutions to collect medical waste generated, particularly by category, medical waste were placed in the anti-leakage, anti the penetrating special packaging or closed containers.

The injection device allows a safe medical personnel performing the procedure after the nursing, after which the needle is embedded can be used in a safe position, to prevent the medical personnel the needle stabbing after use recapped, medical personnel by reducing direct hand contact with the needle after use of the opportunity. SUMMARY

Object of the present invention is to provide a safety syringe having a needle hub, which can achieve the environmental protection, waste disposal reduced volume of the syringe is simple.

Another objective of the present invention to provide an after use, the needle cover of the syringe barrel may be interposed safety syringe having a needle hub.

Another object of the present invention is to provide an after use, the needle holder can be received in safety syringe having a needle hub receiving portion of the syringe.

A further object of the present invention is to provide a connection between the push rod and the number of connection points of the neck together with the neck and the push rod can be separated after use to break the safety syringe having a needle hub.

To achieve the above object, the present invention adopts the following technical solutions: A safety syringe having a needle hub, comprising:

A syringe, having a pipe accommodating space of a medicament for the top end of the converging tube forming a space portion abutting the inner space of the bottom ring is provided with a tube ring convex portion, the convex portion and the bottom ring end is formed with a receiving portion, the receiving portion along the inside bottom end of the ring convex portion forms a tapered cone shape, and defines the accommodating portion and along the outer edge of a syringe communicating perforations;

A push rod tip is provided with a pushing portion, a recessed hook portion, a stopper portion and a neck portion, the plunger is also provided with ring a collar made of rubber or silicone, below the collar the stopper portion, the plunger can move forward in the tube space of the syringe barrel, the rear end of the stopper portion can be exactly positioned against the card can no longer exit portion; a needle hub, the receiving portion sleeved on the syringe barrel , which is provided with a change in the base wall, an adhesion portion and a closing portion, the planar shape of the base has a shape and major and minor axes of the approximately elliptical shape, and the periphery of the upper plane around the total length, total length around the circumference of the ring convex portion is smaller than the syringe barrel, the lower plane of the base shape of a circular type, the base is provided with a downwardly concave engagement portion, and the engagement portion at the top spaced projections provided formed with one or a plurality of positioning portions, and the needle mounting is provided with a circular hole through the needle holder;

A needle cover, a hollow cone shape for engagement of the cap with the needle, the needle cover an outer edge of the ring is provided with several ribs;

The needle hub to pass through the base pipe space of the syringe barrel, and the major axis to the base plane ends abutting against the lower edge of the ring convex portion to form a receiving portion provided on the syringe barrel to resist state , and the adhesion of the needle hub through the perforated portion of the syringe barrel, the lower plane of the base portion and adhesion to the adhesion perforated syringe barrel; collar in use of the push rod can be provided with the syringe the pipe space adhesion, for the user to move forward in the push rod, the push rod within the syringe agent will be able to produce impact pressure and injection drug, when the drug injection is completed, the pushing force causes pushing the plunger into the engagement portion of the base portion, while pushing the plunger into the base portion of the base wall changes gradually into a conical wall surface to the upper plane to the lower plane of the intermediate wall changes, gradually, the engagement portion and the base portion urging the push rod Beng, through a combination of compression force and the frictional force urging adhesion portion, when pushing the plunger into the engagement portion of the base portion, which the positioning section on the needle hub portion than the set will then snap fitted portion fixing recess of the push rod is located At the same time due to the urging of the base portion into the plunger, the plane on which the outer diameter dimension slightly less than the inner diameter of the ring convex portion, and therefore, when the user pulls pull the plunger, the needle holder may be detached from the accommodating Department and collected in cylindrical space in the syringe barrel.

The above-described safety syringe having a needle hub, said needle hub fixed to a needle may be circular. The above-described safety syringe having a needle hub, the engagement sleeve portion sleeved on the needle hub may be a needle hub. The above-described safety syringe having a needle hub, said needle hub base, the connecting portion is provided with a concave, convex and provided with one or a plurality of spaced positioning engagement portion at the tip portion.

As a result of the above design of the present invention, which has the following advantages: 1, the safety syringe provided by the present invention, when the user pulled out of the push rod end of the injection, the needle holder may be detached from the accommodating portion and collected in the syringe barrel tube space, so that you can needle the needle seat protected to prevent others from being discarded syringes stabbed phenomenon. 2, the present invention, the positioning portion is provided at the top of needle hub engagement portion, and the binding force needs to follow a set or a plurality of positioning portions, to enhance the receiving portion of the needle hub from the syringe. 3, the present invention, the neck between the push rod to be connected to a plurality of connection points, thus breaking the neck may be separated from the plunger after use of the syringe, it can not be used fundamentally again. BRIEF DESCRIPTION

An exploded view of the safety syringe having a needle holder of FIG. 1 a first embodiment of the present invention;

FIG 2 (A) ~ FIG. 2 (D) for an enlarged schematic perspective view of the needle hub;

Figure 3 is an exploded view of a second embodiment of the safety syringe having a needle holder of the present invention;

FIG 4 is a schematic safety syringe having a needle hub of the third embodiment of the present invention;

FIG 5 (A) ~ FIG. 5 (C) for the safety syringe having a needle hub schematic operation of the fourth embodiment; FIG schematic 6 (A) wishing to enter the needle hub for pushing operation of the push rod;

After the combination of FIG. 6 (B) into the needle hub for pushing the plunger of a schematic section;

FIG 6 (C) departing from the schematic section for accommodating a syringe plunger with the needle hub;

FIG 6 (D) completely out of the syringe barrel schematic section for accommodating the push rod and the needle hub;

Syringe plunger and a schematic view of the neck of the plunger broken separate safety syringe of FIG. 7 that is pulled out. Preferred embodiment of the present invention

The present invention is designed as a second invention of the same Applicant thereof Application No. PCT / / safety syringe No. 001236 CN2004 made.

See safety syringe having a needle holder of FIG. 1, FIG. 3 and FIG. 4, the present invention is provided, which comprises:

A syringe 1 having a pharmaceutical agent for accommodating space 11 of the pipe, the pipe space 11 converges to form a tip abutment portion 12 which space the bottom end of pipe 11 is provided with a ring 14 Internal ring convex portion 13, and the projecting portion 13 and the bottom ring 14 has a receiving portion 15, accommodating portion 13 along the bottom 15 by the inner ring convex portion 14 forms a tapered cone shape, and the receiving portion 15 is formed and opened along the outer edge of the injection cylinder 1 has a through hole 16 communicating;

A plunger 2, the plunger tip 2 is provided with a pushing portion 21, a recessed hook portion 22, a stop 23 and a neck portion 24, and the push rod 2 is provided with a ring collar 25, the collar the lower portion 25 of stopper 23 may push rod 2 moving forward pipe space 11 after the syringe barrel 1, the rear end stop 23 which may be just the card is in abutment portion 12 can no longer exit 4 of the present invention, FIG. 2 a second embodiment of the push rod, and FIG. 5 (a) according to a third embodiment of the invention, the plunger 2;

A needle hub receiving portion 3, sleeved on the syringe barrel 15, which is provided with a change in the base wall 31, an adhesion portion 32 and the engagement portion 33 a, the plane of the base 31 in the shape of a 34 there was a major axis 341 and minor axis 342 approximately elliptical shape, and the total length of the inner circumferential ring 13 surrounding the convex portion is smaller than the total length of the syringe barrel 34 of the circumferential periphery of the plane, the planar base 31 of the shape of the line 35 is a circular type, and the base 31 is provided with a downwardly concave engagement portion 36, and at the top of engagement portion 36 protruding spacer formed with one or a plurality of positioning portions 37, and is provided on the needle hub 3 needle hub 3 through the circular hole 38, a circular hole 38 of the needle 39 can be fixed, and allowing the needle 39 within the base 31 and defines a circular hole 38 communicating, Figure II (a) to two (D), ;

A needle cover 4, into a hollow cone shape for engagement of the needle with the cap 39, the needle cover and the outer edge of the ring 4 provided with a plurality of ribs 41, shown in Figure 7, the needle cover 4 can become a top, a bottom end 14 having only the communication morphology or form an opening, in the present embodiment, a top, a bottom end 14 is in communication form described embodiment;

Refer to FIG. 5 (A) to 5 (C), the needle hub 3 to the base pipe 31 through the space 11 of the syringe barrel 1, and to the longitudinal plane 31 of the base 34 abuts against the second end 341 of the lower edge of the ring projecting portion 13 to form a resist in the syringe receiving state setting section 151, and the needle hub and syringe barrel 1 through the perforations 32 of the contact portion 16 of the post 3, the base 31 the lower plane 35 and 32 16, which sleeve engagement portion of the needle hub 3 is provided for the needle hub 33 is sleeved adhesion portion bonded to the perforated adhesion 1 5 of the syringe, the needle hub 5 is currently used standard needle hub 5, However, different users may demand pick 39 gauge needle, and the needle hub 5 through the fixing portion 51 engaging the portion sleeved on the needle hub 3 is used to provide 33.

Is a more detailed description of the invention, see FIG. 6 (A) to 6 (D), an enlarged schematic view of the present embodiment of the invention, when using a safety syringe having a needle holder of the present invention, because of the push rod 2 is provided the collar 25 is made of rubber or silicone, so the stopper portion 1 of the syringe abuts against the tube 17 can be injection cylinder space 11 of adhesion, the user in food, middle finger, and then pushing the thumb soft reduction 26, the lever 2 is accommodated in the pressing portion 1 of the syringe agent (not shown) by extrusion out of the injection needle 39, when the push rod 2 moving forward, the syringe 1 will be agent 2 plunger pushed pressure generating agents can be injected, the injection is completed when the agent which causes the pushing force pushing the plunger 21 into the engagement portion 2 of the portion 36 of the base 31.

The pusher urging portion 21 2 at the same time into the base 31, a change in the wall of the base 31 will gradually become conical wall surface 31 so that the plane of the base 34 to the wall surface 35 under varying middle plane, gradually and adhesion urging portion 21, thereby enabling the pushing portion 21 of the plunger 2 and the engagement portion of the base 36 by a combination of compression force and a frictional force 31, when the pushing portion 21 of the plunger 2 into the adapter base 31 after the unit 36, which needle hub 3 than the positioning portion 37 of the upper insert will further buckle fixed to the recessed portion 22 located in the push rod 2, while the base 31 by pushing the push rod 21 enters the rear portion 2, on the outer plane 34 diameter dimension slightly less than the inner diameter of the ring convex portion 13, and therefore, when the user 2 is pulled out of the pusher (7), the needle hub 3 can be detached from the accommodating portion 15 and collected in syringe 1 space 11 of the pipe.

Refer to FIG. 2 (A), an enlarged schematic view of the present invention, the needle hub 3 of the present invention, other embodiments may be provided to other aspects, FIG. 2 (B) to 3 (D), the positioning portion 37 provided on the adapter tip portion 36, which is provided according to necessity, or a plurality of positioning portions 37 to enhance coupling force needle hub 3 from the accommodating portion 15 of the syringe barrel 1.

In the syringe 1 according to the invention, the receiving portion 15 16 is provided in communication with the perforations, and the accommodating portion 15 is larger than the pore size of the through-hole aperture 16 is formed having a shape so the class, so that when when the base 31 is provided in the syringe barrel 1, it could exactly correspond to the receiving portion 15 and the through hole 16, and completely accommodated in the accommodating portion 15, so that the needle hub 3 can not fall out of the perforations 16 1 where the syringe barrel is produced, adhesion accommodating portion 15 and the design of the shape class of perforations 16, when injecting a drug may prevent leakage of the phenomenon.

Further, the syringe 1 is located in the stopping position with portion 17 against portion 12, is formed with a convergent tip shape class of the syringe, so that when the safety syringe having a needle hub after use, the user pushes 2 to move the rod abutting section 12 when the push rod 2 can stop 23 engaged against the abutment portion 12, the push rod 2 can not move without departing from the syringe 1, the plunger 2 and the neck 24 to a plurality of connection points to be connected, using a syringe after the push rod 2 may be separated from the neck 24 to break, as shown in FIG. Industrial Applicability

The present invention provides a safety syringe having a needle hub compared to the conventional art, which has the following advantages: safety syringe provided by the present invention, when the user pulled out of the plunger after the injection is completed, the needle can be detached from the base accommodating portion and collected in cylindrical space in the syringe barrel, so that the needle seat of the needle can be protected to prevent others from being stabbed discarded syringe phenomenon; the present invention, the positioning portion provided in the needle hub tip engagement portion, and that you can set one or a plurality of positioning portions, to enhance the binding force when the needle hub from the syringe barrel accommodating portion; the present invention, the push rod between the neck and the plurality of connection points to be connected together , thus breaking the neck may be separated from the plunger after use of the syringe, it can not be used fundamentally again. The present invention provides a safety syringe having a needle holder adapted to industrial applications.

Claims

Rights request
1. A safety syringe having a needle hub, characterized in that it comprises:
A syringe, having a pipe accommodating space of a medicament for the top end of the converging tube forming a space portion abutting the inner space of the bottom ring is provided with a tube ring convex portion, the convex portion and the bottom ring end is formed with a receiving portion, the receiving portion along the inside bottom end of the ring convex portion forms a tapered cone shape, and defines the accommodating portion and along the outer edge of a syringe communicating perforations;
A push rod tip is provided with a pushing portion, a recessed hook portion, a stopper portion and a neck portion, the plunger is also provided with ring a collar made of rubber or silicone, below the collar the stopper portion, the plunger can move forward in the tube space of the syringe barrel, the rear end of the stopper portion can be exactly positioned against the card can no longer exit portion; a needle hub, the receiving portion sleeved on the syringe barrel , which is provided with a change in the base wall, an adhesion portion and a closing portion, the planar shape of the base has a shape and major and minor axes of the approximately elliptical shape, and the periphery of the upper plane around the total length, total length around the circumference of the ring convex portion is smaller than the syringe barrel, the lower plane of the base shape of a circular type, the base is provided with a downwardly concave engagement portion, and the engagement portion at the top spaced projections provided formed with one or a plurality of positioning portions, and the needle mounting is provided with a circular hole through the needle holder;
A needle cover, a hollow cone shape for engagement of the cap with the needle, the needle cover an outer edge of the ring is provided with several ribs;
The needle hub to pass through the base pipe space of the syringe barrel, and the major axis to the base plane ends abutting against the lower edge of the ring convex portion to form a receiving portion provided on the syringe barrel to resist state , and the adhesion of the needle hub through the perforated portion of the syringe barrel, the lower plane of the base portion and adhesion to the adhesion perforated syringe barrel; collar in use of the push rod can be provided with the syringe the pipe space adhesion, for the user to move forward in the push rod, the push rod within the syringe agent will be able to produce impact pressure and injection drug, when the drug injection is completed, the pushing force causes pushing the plunger into the engagement portion of the base portion, while pushing the plunger into the base portion of the base wall changes gradually into a conical wall surface to the upper plane to the lower plane of the intermediate wall changes, and gradually adhesion urging portion, thereby enabling the engagement portion to push the push rod and the base portion, through a combination of compression force and friction when pushing the plunger into the engagement portion of the base portion, the needle the positioning of the seat portion than the set will then snap fitted portion fixing recess of the push rod is located At the same time due to the urging of the base portion into the plunger, the plane on which the outer diameter dimension slightly less than the inner diameter of the ring convex portion, and therefore, when the user pulls pull the plunger, the needle holder may be detached from the accommodating Department and collected in cylindrical space in the syringe barrel.
2. A safety syringe having a needle holder according to claim 1, characterized in that: said needle hub fixed to a needle can be circular holes.
3. A safety syringe having a needle holder according to claim 1, characterized in that: said needle hub portion engaging the sleeve may be provided a needle hub.
4. The safety syringe having a needle holder according to claim 1, characterized in that: said needle hub base, the connecting portion is provided with a concave and spaced convex tip engagement portion provided with one or a plurality of positioning unit.
PCT/CN2005/000399 2005-03-29 2005-03-29 A safety syringe with a needle hub WO2006102790A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2005/000399 WO2006102790A1 (en) 2005-03-29 2005-03-29 A safety syringe with a needle hub

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/CN2005/000399 WO2006102790A1 (en) 2005-03-29 2005-03-29 A safety syringe with a needle hub
IL17604006A IL176040D0 (en) 2005-03-29 2006-05-31 Safety syringe with a needle seat

Publications (1)

Publication Number Publication Date
WO2006102790A1 true WO2006102790A1 (en) 2006-10-05

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ID=37052934

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/000399 WO2006102790A1 (en) 2005-03-29 2005-03-29 A safety syringe with a needle hub

Country Status (2)

Country Link
IL (1) IL176040D0 (en)
WO (1) WO2006102790A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2140753Y (en) * 1992-09-24 1993-08-25 李仁方 Safety structure of syringe
CN2170110Y (en) * 1993-05-21 1994-06-29 李仁方 Safety structure for syringe
US5344403A (en) * 1993-06-09 1994-09-06 Rahnfong Lee Simple retractable safety syringe
CN1243014A (en) * 1998-07-24 2000-02-02 敦煌国际投资股份有限公司 Safety syringe
US6554796B2 (en) * 2000-05-22 2003-04-29 Cheng-Chi Lo Safty hypodermic syringe and needle holder for same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2140753Y (en) * 1992-09-24 1993-08-25 李仁方 Safety structure of syringe
CN2170110Y (en) * 1993-05-21 1994-06-29 李仁方 Safety structure for syringe
US5344403A (en) * 1993-06-09 1994-09-06 Rahnfong Lee Simple retractable safety syringe
CN1243014A (en) * 1998-07-24 2000-02-02 敦煌国际投资股份有限公司 Safety syringe
US6554796B2 (en) * 2000-05-22 2003-04-29 Cheng-Chi Lo Safty hypodermic syringe and needle holder for same

Also Published As

Publication number Publication date
IL176040D0 (en) 2008-02-09

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