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WO1997011728A1 - Seringue non reutilisable a piston amovible pouvant servir de protection contre l'aiguille - Google Patents

Seringue non reutilisable a piston amovible pouvant servir de protection contre l'aiguille Download PDF

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Publication number
WO1997011728A1
WO1997011728A1 PCT/US1995/012281 US9512281W WO9711728A1 WO 1997011728 A1 WO1997011728 A1 WO 1997011728A1 US 9512281 W US9512281 W US 9512281W WO 9711728 A1 WO9711728 A1 WO 9711728A1
Authority
WO
WIPO (PCT)
Prior art keywords
plunger
barrel
piston
syringe
latch
Prior art date
Application number
PCT/US1995/012281
Other languages
English (en)
Inventor
Roy Hammett
Eric J. Sundsvold
Original Assignee
Roy Hammett
Sundsvold Eric J
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 Roy Hammett, Sundsvold Eric J filed Critical Roy Hammett
Priority to AU36419/95A priority Critical patent/AU3641995A/en
Priority to PCT/US1995/012281 priority patent/WO1997011728A1/fr
Publication of WO1997011728A1 publication Critical patent/WO1997011728A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/32—Needles; 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
    • A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
    • A61M5/321—Means for protection against accidental injuries by used needles
    • A61M5/3216—Caps placed transversally onto the needle, e.g. pivotally attached to the needle base
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M2005/3103—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle
    • A61M2005/3107—Leak prevention means for distal end of syringes, i.e. syringe end for mounting a needle for needles
    • A61M2005/3109—Caps sealing the needle bore by use of, e.g. air-hardening adhesive, elastomer or epoxy resin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • A61M5/31513—Piston constructions to improve sealing or sliding
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
    • A61M5/508—Means for preventing re-use by disrupting the piston seal, e.g. by puncturing

Definitions

  • This invention relates generally to hypodermic syringes, and more particularly, to an inexpensive hypodermic syringe that is capable of use only once, and which has a part that is removable after use to serve as a needle guard.
  • the invention represents an improvement over the syringes shown in earlier patent numbers 5, 1 81 ,91 2, 5,352,200 and 5,352,202.
  • hypodermic syringes used for intravenous administration of fluids, or to withdraw fluids from the veins of a person during the course of treatment of an illness, or in routine diagnostic examinations.
  • Hypodermic syringes used for this purpose are generally disposable, and are intended to be discarded after a single use by trained medical personnel.
  • the used syringe could also fall into the hands of a drug addict or other person who may be inclined to reuse the syringe. Such persons typically reuse a syringe many times and share it with other addicts. If the syringe has been used to make an injection or to withdraw body fluid from a person having an infectious disease, all of those persons subsequently using the contaminated needle are at risk of acquiring the infectious disease.
  • the needles should be broken from the used syringes, and/or encased in a protective sheath, and devices have been provided in the prior art for accomplishing this. For instance, needles have been joined to the syringe body through frangible connections so that the doctor, nurse or other medical personnel can easily break the needle from the syringe after it is used. Unfortunately, this is not always done during the urgency of medical treatment, or if it is, there still remains an exposed needle body.
  • guards or sheaths that have been provided to encase the used needle.
  • Such guards generally comprise separate sleeves or cap members that enclose the needle before it is used and which must be removed and set aside during use of the syringe. It is intended that after use of the needle, the guard will again be placed over the needle. However, the guard may become misplaced during the medical procedure being performed and therefore not available for reuse. Even if it is not misplaced, the person responsible for safe handling of the syringe may not have the time, or take the time, to retrieve the guard and place it over the needle. Further, even if such a conventional guard is placed on the needle, it is capable of being removed, whereby the syringe could again be rendered capable of use.
  • a means is needed to prevent sharing and reuse of syringes, and thereby to prevent the spread of infectious diseases caused by use of contaminated syringes.
  • a significant preventive measure would be the provision and use of syringes that could be used one time. Accordingly, it would be desirable to have a disposable hypodermic syringe that is reliable in operation, simple and economical in construction, and in which a part of the syringe assembly itself is adapted as a needle guard after the syringe has been used for its intended purpose. It would further be desirable to provide a disposable syringe that is not capable of being reused after a single use.
  • the disposable syringe of the invention comprises a cylindrical syringe barrel of substantially conventional construction, having an open end and a suitable conventional fitting on the other end, such as a Luer lock adapter, or other means, for attaching a needle.
  • a plunger or stem is reciprocable in the barrel and carries a piston on its inner end for developing vacuum or pressure, depending upon the direction of reciprocation of the piston and plunger in the barrel.
  • a feature of the present invention is the use of the plunger, itself, as a guard for the needle after the syringe has been used. To this end, the plunger has a cavity formed in it, shaped to receive the needle and to remain securely attached to the syringe after it has been placed over the needle. In use, the plunger is simply removed from the barrel after the syringe has been used, and placed over the needle. There is no separate member which must be retrieved and used for this purpose.
  • an entry slot is formed through the side of the plunger at the open end, through which the needle may be initially laterally placed prior to being axially fully inserted into the plunger, to thereby minimize the risk of pricking the finger of the person placing the guard over the needle.
  • a small quantity of adhesive is positioned in the plunger/guard to permanently adhesively secure the plunger/guard to the needle after it is placed in operative position on the needle, thereby rendering the needle incapable of reuse.
  • the invention becomes inoperable after a single use, so that it cannot be used again.
  • This is achieved by releasably attaching the piston to the end of the plunger by movable latch arms.
  • the latch arms have over-center positions moving from latching engagement with latching fingers on the piston to an unlatched position freeing the latching fingers on the piston from the plunger.
  • the piston of the invention is preferably made of a synthetic plastic material, resulting in a much less costly structure than conventional syringes in which the piston is typically made of a rubber material.
  • a relief area is formed in the inner surface of the syringe barrel in the position occupied by the piston when it is in its at-rest, stored position fully inserted into the syringe barrel.
  • the piston also has a thin end wall that is easily pierced, so that a thin implement cannot be inserted through the forward end of the barrel in an effort to push the piston rearwardly in the barrel.
  • Fig. 1 is a perspective view of a hypodermic syringe incorporating the features of the invention.
  • Fig. 2 is a longitudinal view with parts shown in section of the syringe of figure 1 .
  • Fig. 3 is a top plan view of the syringe, looking down on the top of figure 2.
  • Fig. 4 is an exploded perspective view of the syringe of figure 1 , with parts broken away and parts shown in section.
  • Fig. 5 is an enlarged, fragmentary, longitudinal sectional view of the end of the forward end of the syringe of the invention.
  • Fig. 6 is an enlarged fragmentary view of the end of the plunger in one form of the invention, as used in figures 1 -5.
  • Fig. 7 is a transverse sectional view taken along line 7-7 in figure 6.
  • Fig. 8 is a greatly enlarged fragmentary view in section of one of the latching arms carried by the end of the plunger, and showing its relationship with the wall of the barrel, the dot-and-dash lines representing the latched and unlatched over-center positions, respectively.
  • Fig. 9 is an enlarged fragmentary perspective view of one of the latching arms.
  • Fig. 10 is an enlarged, fragmentary, partly sectional view of the end of a modified plunger according to the invention.
  • Fig. 1 1 is an enlarged, fragmentary, longitudinal sectional view of the syringe of figure 1 , shown in its at-rest position with the piston latched to the plunger.
  • Fig. 1 2 is a fragmentary, longitudinal sectional view of the syringe of figure 1 1 , showing the plunger and piston being initially withdrawn in the barrel.
  • Fig. 13 is an enlarged, fragmentary, longitudinal sectional view of the syringe of figure 1 1 , showing the plunger and piston being moved forwardly in the barrel, and depicting how the latching arms move rearwardly through their over-center position to release the latching fingers on the piston.
  • Fig. 14 is an enlarged, fragmentary, longitudinal sectional view of the syringe of figure 1 , shown with the piston seated at the bottom of the barrel following an injection, and with the plunger being withdrawn, with the piston unlatched from the plunger and remaining in the bottom of the barrel.
  • Fig. 1 5 is a fragmentary exploded view of the syringe of the invention, showing how the plunger may be used a needle guard upon its removal from the barrel.
  • Fig. 16 is a fragmentary view in elevation showing the plunger engaged on the Luer lock adapter of the syringe and secured in place as a needle guard for the needle.
  • Fig. 1 7 is a fragmentary, longitudinal sectional view of the plunger, showing the ampule of adhesive disposed in the plunger.
  • Fig 18 is a view similar to figure 1 7, showing how the adhesive in the ampule engages with the needle and with the plunger to fix the plunger to the needle.
  • Fig. 1 9 is a transverse sectional view taken along line 1 9-19 in figure
  • Fig. 20 is a fragmentary, perspective sectional view of a portion of the bottom of the barrel and the piston, showing the thin piston end wall and the score lines therein which define weakened areas.
  • Fig. 21 is a fragmentary perspective view of the end wall of the piston, showing how the end wall is pierced with an implement used in an attempt to push the piston rearwardly in the barrel.
  • Fig. 22 is an enlarged, fragmentary perspective view, with portions broken away and portions shown in section, of another form of the invention, wherein the latching arms are located in positions disposed 90° out of alignment with the body of the plunger;
  • Fig. 23 is an exploded perspective view of the structure shown in figure 22, with the plunger unlatched from the piston.
  • a syringe in accordance with the invention is indicated generally at 10 in figures 1 -9 and 1 1 -14.
  • a cylindrical syringe barrel 1 1 has a forward end 12 with a suitable means, such as a Luer lock adapter 13, for attachment of a needle 14, and an open rearward end 15.
  • a plunger 16 is reciprocable in the barrel, and carries a piston 17 at its forward end for drawing material into the plunger and discharging it through the needle.
  • the piston 17 is releasably connected to the plunger so that it is rendered inoperable after a single use.
  • the piston has a plurality of rearwardly projecting latch fingers 18 that are molded with a radially outwardly oriented bias, so that they assume the position shown in figures 1 3 and 14 when they are unrestrained.
  • latch fingers spaced uniformly around the circumference of the piston.
  • each latch finger has a radially inwardly directed detent 19 that is adapted to engage behind a retaining ring 20 on the forward end of the plunger to hold the piston to the plunger when the latch fingers are urged inwardly to the position shown in figures 1 -5, 1 1 and 12.
  • the latch fingers are held in this position by latching arms 21 and 22 carried on the plunger and engaged in encircling relationship over the free outer ends of at least some of the latch fingers.
  • the piston 17 may be made of any suitable material, but in the form shown is made of plastic, and has two oppositely oriented, outwardly flared sealing rings 22 and 23 for sliding engagement against the inner surface of the syringe barrel.
  • the inner surface of the barrel adjacent the end 12 is slightly diametrically enlarged at 25 to provide a relief area for seal 24 on the piston 17 when it is inserted fully into the barrel. This relief area prevents set of the piston seal 24 which might otherwise occur when the piston is made of plastic material and is stored in this position.
  • the plunger 16 is reciprocable in the barrel between a forward position inserted fully into the barrel, and a rearward position retracted or withdrawn in the barrel, and has a forward end 26 that telescopically engages with a central bore 27 in the rearward side of the piston 17.
  • the rearward end 28 of the plunger has a radially enlarged operating flange 29 which may be gripped with the fingers and used to reciprocate the plunger in the barrel.
  • This enlarged flange also forms a shield to protect the fingers when the plunger is being placed over a needle to serve as a needle guard.
  • the plunger may have a generally H-shaped transverse cross-section, with a central body 30 and oppositely extending flanges 31 and 32 along diametrically opposite sides of the body, with arcuate flanges 33 and 34 at their outer edges to slidably support the plunger in the barrel.
  • the plunger body 30 has a hollow, stepped configuration, including a larger tapered entry portion 30a adapted to receive the tapered portion 13 of the Luer adapter on the syringe barrel, an intermediate cylindrical portion 30b adapted to lock onto the cylindrical portion of the Luer lock fitting of the syringe barrel, and a reduced diameter tapered portion 30c adapted to closely receive the needle 14.
  • an elongate slot 40 is formed through the side of the plunger body, leading from the end 28 and terminating at the end of the tapered portion 30a.
  • the needle may be laid sideways into the slot and then slid lengthwise to fully seat the needle in the plunger/guard. This eliminates the danger of missing the relatively small opening in the end of the plunger when attempting to insert the needle lengthwise into the guard.
  • a small envelope 50 containing an adhesive 51 is located in the hollow bore portion 30c of the plunger in a position to be pierced by the needle 14 as the plunger is placed over the needle.
  • the envelope 50 is roughly the size of a BB and is located at a point in the bore where small openings 52 and 53 are formed during the molding process.
  • the adhesive 51 escapes and flows into the space surrounding the needle and into the two small openings 52 and 53, thereby forming a mechanical lock between the needle and the plunger and preventing removal of the plunger after the adhesive has cured .
  • it is anticipated that a small quantity of the adhesive will enter the end of the needle as it passes through the envelope of adhesive, plugging the needle and preventing its use even if access to it should be gained.
  • the latching mechanism includes an elongate bifurcated end 70 projecting beyond the retaining ring 20.
  • the bifurcated end defines two semi-cylindrical posts 71 and 72 which extend into the bore 27 in the piston.
  • the end of the plunger extending above the retaining ring 20 is hollow and is reinforced by a plurality of radially extending webs 73 which prevent inward flexing of the plunger end in the area of the retaining ring 20. See figure 7.
  • the ends of posts 71 and 72 are spaced from the end wall of the piston when the latching arms and latching fingers are operatively engaged behind the retaining ring 20.
  • the latching arms 21 and 22 move to their over-center position due to frictional drag on the inner surface of the wall of barrel 1 1 , thereby releasing the latching fingers 18 and enabling them to spring outwardly, bringing the detents 19 out of registry with the retaining ring 20.
  • Continued forward movement of the plunger causes the posts 71 and 72 to engage the end of the piston 17 to move it downwardly in the barrel 1 1 .
  • each latching arm (only latching arm 22 is shown and described here, it being understood that the latching arms 21 and 22 are identical) is joined to the plunger body by a relatively thin hinge area 74 to enable the arm to be easily flexed about the hinge.
  • the outer ends of the arms are thickened in an axial direction relative to the longitudinal axis of the plunger, defining a radially inwardly facing shoulder 75 which engages against the outer surfaces of the arms 18 at their upper ends to hold the detents 19 in an inward position latched behind the retaining ring 20 on the plunger. See figures 1 1 and 12.
  • a relatively narrow axially extending band 76 extends around the outer circumference of the arm for sliding engagement with the inner surface of the wall of barrel 1 1 .
  • Inwardly tapered or sloping surfaces 77 and 78 extend upwardly and downwardly, respectively, from the band 76 to the top and bottom surfaces, respectively, of the arm.
  • a rectangularly shaped enlargement or friction pad 79 extends downwardly from the band 76 to a point spaced just above the bottom surface of the arm. This area extends parallel and co-planer with the band 76 and defines a sliding surface against the inner surface of barrel wall 1 1 .
  • the arm is slightly longer than the radius of the inner surface of the wall of barrel 1 1 , whereby when the arm is in its horizontal position shown in figure 8 there is considerable frictional engagement between the band 76 and surface 79 with the inner surface of the barrel.
  • the arm slides along the inner surface of the barrel, but when the plunger is moved forwardly, the frictional drag between the band 76 and surface 79 with the inner surface of the barrel causes the arm to move rearwardly through an arc to an over-center position indicated by the dot and dash line OC in figure 8.
  • the arms are also shown in this position in figures 13 and 14, and cannot be returned to their original position shown in full lines in figure 8 without use of a special tool to push the arms downwardly to engage against the outer surfaces of latching fingers 18 and hold the detents 19 behind the retaining ring 20.
  • the end wall 80 of the piston is relatively thin, defining a membrane that may be relatively easily pierced. Accordingly, if an attempt should be made to insert a thin object such as a paper clip or the like through the Luer lock adapter end of the barrel to engage the piston and force it rearwardly in the barrel, the object will penetrate the wall 80 and render the piston useless.
  • the wall 80 may be scored as indicated at 81 in figures 20 and 21 . Accordingly, when an implement such as a paper clip or the like C is inserted through the end 13 of the barrel 1 1 , the clip will penetrate the wall 80, causing it to fail along the score lines 81 and fold backwardly in a petal-like action, effectively destroying the end wall of the piston and rendering it impossible to use for drawing Iiquid into or expelling it from the syringe.
  • a modified plunger construction is indicated generally at 17' in figure 10.
  • the Iower tapered body portion 30c' of the plunger is hollowed out all the way to the level of the retaining ring 20, as shown at 90, for receipt of a longer needle.
  • the Iower end of the plunger extending below the retaining ring 20 is shaped with a plurality of mutually orthogonally disposed flanges or webs 91 for extending into the bore 27 in the piston.
  • this form of the invention functions identically to that previously described.
  • a further form of the invention is indicated generally at 100 in figures
  • This form of the invention is essentially identical to that described in relation to figures 1 -6, except that the latching arms 21 ' and 22' are oriented in a position rotated 90° out of alignment with the semi-cylindrical flanges 33 and 34 on the plunger 16.
  • a special tool (not shown) having elongate pins is inserted through openings 101 and 102 in the flange 29 and extended downwardly past the body 33, 34 of the plunger to contact the upper surface of the latching arms 21 and 22 near their outer peripheries to force them downwardly about the hinges 74 and into latching engagement with the outer surfaces of the arms 18.
  • the arms 21 ' and 22' are offset circumferentially 90° out of alignment with the body 33, 34 of the plunger.
  • An opening 105 is necessary in the flange 29' at the upper end of the plunger to gain access of the tool into that side.
  • the other side is open by virtue of the slot 40, previously described.
  • openings 101 and 102 and the opening 105 through the respective collars 29 and 29' are provided with a small projection 106 that extends into the opening to prevent insertion of an implement other than the special tool which is designed for the purpose.
  • the piston is first inserted into the barrel through the open rearward end thereof, and the plunger is next inserted to bring the post and latching arms into juxtaposition with the piston.
  • a special tool (not shown) is then inserted through the open end of the barrel and into contact with the latching arms, and is used to force the latching arms through their over-center position into the latched position shown in figure 5.
  • piston has been described herein as made of plastic, it should be understood that it may equally as well be made of rubber, as described in applicant's prior U.S. patent 5, 181 ,912. In such event, the piston itself may be constructed differently in the area where it seals with the barrel, but the latching mechanism is substantially identical to that previously described, and the hollow body for encasing the needle is the same as before.
  • the syringe of the invention is simple and economical in construction, and yet it provides an entirely different structure and function as compared with a conventional syringe, i.e., the plunger doubles as a needle guard after the syringe has been used, and the piston is connected to the plunger through a latched construction that automatically disables the syringe after a single use.
  • the piston further incorporates structure that renders it unusable if an implement is used in an attempt to push the piston rearwardly in the barrel.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Environmental & Geological Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

La présente invention concerne une seringue hypodermique jetable (10) comportant un corps de pompe (11) pourvu d'un pavillon (13) à une extrémité pour la fixation d'une aiguille (14), un bouchon (17) et un piston (16) pouvant faire un mouvement de va-et-vient dans le corps de pompe. Le piston (16) comprend un perçage (30, 90) longitudinal, il peut être retiré du corps de pompe et verrouillé sur le pavillon, enfermant ainsi l'aiguille pour servir de protection contre elle. Une certaine quantité d'adhésif (51) peut être placée dans le piston afin que l'aiguille perce cet adhésif quand on met le piston par-dessus l'aiguille pour qu'il serve de protection, ce qui fixe de manière permanente le piston protecteur sur l'aiguille. Le bouchon (17) est monté sur le piston de manière amovible au moyen de bras d'encliquetage pivotants (21, 22) qui se trouvent sur le piston et qui s'engrènent avec des doigts d'encliquetage pivotants (18) du bouchon, pour maintenir les doigts d'encliquetage pris derrière un anneau de retenue du piston et, ainsi, maintenir le bouchon solidaire du piston.
PCT/US1995/012281 1995-09-25 1995-09-25 Seringue non reutilisable a piston amovible pouvant servir de protection contre l'aiguille WO1997011728A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU36419/95A AU3641995A (en) 1995-09-25 1995-09-25 Non-reusable syringe with removable plunger usable as a needle guard
PCT/US1995/012281 WO1997011728A1 (fr) 1995-09-25 1995-09-25 Seringue non reutilisable a piston amovible pouvant servir de protection contre l'aiguille

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1995/012281 WO1997011728A1 (fr) 1995-09-25 1995-09-25 Seringue non reutilisable a piston amovible pouvant servir de protection contre l'aiguille

Publications (1)

Publication Number Publication Date
WO1997011728A1 true WO1997011728A1 (fr) 1997-04-03

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PCT/US1995/012281 WO1997011728A1 (fr) 1995-09-25 1995-09-25 Seringue non reutilisable a piston amovible pouvant servir de protection contre l'aiguille

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Country Link
AU (1) AU3641995A (fr)
WO (1) WO1997011728A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5997514A (en) * 1999-01-15 1999-12-07 Brocco Research, Usa Finger grip collar for a syringe or cartridge barrel
WO2008064283A2 (fr) * 2006-11-24 2008-05-29 3M Innovative Properties Company Piston, et distributeur à main comprenant un piston
AU2007225005B2 (en) * 2006-03-13 2011-08-25 Medigard Limited A needle containing medical device with variable locking to needle holder
CN112807523A (zh) * 2019-11-18 2021-05-18 苏宣维 自毁拉缩安全针具
WO2024097595A3 (fr) * 2022-11-02 2024-06-20 Becton, Dickinson And Company Seringue à désactivation automatique basée sur l'aspiration

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578394A (en) * 1947-12-04 1951-12-11 Premo Pharmaceutical Lab Inc Hypodermic syringe
US4994044A (en) * 1988-10-18 1991-02-19 Carmelo Lo Duca Protected needle syringe
US5084027A (en) * 1991-07-19 1992-01-28 Bernard Daniel H Needle cover with safety disposal chamber
US5176639A (en) * 1988-06-03 1993-01-05 Jean-Edouard Clotteau Single-injection syringe
US5181912A (en) * 1991-12-05 1993-01-26 Roy Hammett Non-reusable syringe
US5352200A (en) * 1991-12-05 1994-10-04 Roy Hammett Non-reusable syringe with needle guard
US5352202A (en) * 1991-12-05 1994-10-04 Roy Hammett Non-reusable syringe with removable plunger usable as a needle guard

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578394A (en) * 1947-12-04 1951-12-11 Premo Pharmaceutical Lab Inc Hypodermic syringe
US5176639A (en) * 1988-06-03 1993-01-05 Jean-Edouard Clotteau Single-injection syringe
US4994044A (en) * 1988-10-18 1991-02-19 Carmelo Lo Duca Protected needle syringe
US5084027A (en) * 1991-07-19 1992-01-28 Bernard Daniel H Needle cover with safety disposal chamber
US5181912A (en) * 1991-12-05 1993-01-26 Roy Hammett Non-reusable syringe
US5352200A (en) * 1991-12-05 1994-10-04 Roy Hammett Non-reusable syringe with needle guard
US5352202A (en) * 1991-12-05 1994-10-04 Roy Hammett Non-reusable syringe with removable plunger usable as a needle guard

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5997514A (en) * 1999-01-15 1999-12-07 Brocco Research, Usa Finger grip collar for a syringe or cartridge barrel
AU2007225005B2 (en) * 2006-03-13 2011-08-25 Medigard Limited A needle containing medical device with variable locking to needle holder
US8034024B2 (en) 2006-03-13 2011-10-11 Medigard Limited Needle containing medical device with variable locking to needle holder
WO2008064283A2 (fr) * 2006-11-24 2008-05-29 3M Innovative Properties Company Piston, et distributeur à main comprenant un piston
WO2008064283A3 (fr) * 2006-11-24 2009-03-05 3M Innovative Properties Co Piston, et distributeur à main comprenant un piston
CN112807523A (zh) * 2019-11-18 2021-05-18 苏宣维 自毁拉缩安全针具
CN112807523B (zh) * 2019-11-18 2023-05-23 苏宣维 自毁拉缩安全针具
WO2024097595A3 (fr) * 2022-11-02 2024-06-20 Becton, Dickinson And Company Seringue à désactivation automatique basée sur l'aspiration

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