CA2018363C - Safety syringe - Google Patents
Safety syringeInfo
- Publication number
- CA2018363C CA2018363C CA002018363A CA2018363A CA2018363C CA 2018363 C CA2018363 C CA 2018363C CA 002018363 A CA002018363 A CA 002018363A CA 2018363 A CA2018363 A CA 2018363A CA 2018363 C CA2018363 C CA 2018363C
- Authority
- CA
- Canada
- Prior art keywords
- needle
- protrusion
- piston
- barrel member
- rotational torque
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 28
- 201000010099 disease Diseases 0.000 description 6
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 208000030507 AIDS Diseases 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 208000006454 hepatitis Diseases 0.000 description 1
- 231100000283 hepatitis Toxicity 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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
-
- 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
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
-
- 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
-
- 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
-
- 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
- A61M5/178—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
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Environmental & Geological Engineering (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Saccharide Compounds (AREA)
- Centrifugal Separators (AREA)
- Valve Device For Special Equipments (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A disposible syringe in which the needle, following use, is adapted to be withdrawn into the cylinder and to be held within the cylinder to prevent reuse. The needle is mounted on a needle holding body having a recess therein which is adapted to lock with an element on the piston when the piston has been fully depressed.
Upon withdrawal of the piston the needle holding body and the needle attached to it are withdrawn into the body of the cylinder where they are locked in place by means of projection on the inside wall of the cylinder.
Upon withdrawal of the piston the needle holding body and the needle attached to it are withdrawn into the body of the cylinder where they are locked in place by means of projection on the inside wall of the cylinder.
Description
~ 20 1 8363 SPEGIFICATION
1. Name of Design: SAFETY SYRINGE
1. Name of Design: SAFETY SYRINGE
2. A brief explanation of diagram:
Diagram 1: enlarged vertical cut diagram of the connection between the needle-fixing cap of imaginary line and the piston body while the needle-holding body inside the plston body of the syrlnge being designed.
Diagram 2 and 3: depicts the working of the piston on the syringe being designed.
Diagram 2: vertical cut diagram before in~ectlon.
Diagram 3: vertical cut diagram after iniection.
Diagram 4: enlarged vertical cut diagram of the needle-fixing cap, needle-maintaining body and plston comblned inside the cylinder being designed.
Diagram 5: enlarged vertical cut diagram of the syringe needle separating the needle-holding body inside the cylinder being designed.
Diagram 6: vertical cut diagram of the syringe needle pulled so as to be contained inside the body of the cylinder.
Diagram 7: enlarged vertical cut diagram of another example of operation of the design.
EXPLANATION OF CODES FOR THE IMPORTANT PARTS OF THE DIAGRAM
1. Syrlnge 3. Needle-fixing cap 4. Needle-holding body 5. Piston rod 6. Piston 7. Inside wall 8. Gylinder female screw part 9. Assembly protrusion 10. Grasping part 11. Needle 12. Flange 13. Flxing-cap female screw 14. Inside wall 15. Holdlng body male screw 1~. Stoppage protrusion 17. Opening 18. Bell-shaped protrusion of the holding body 19. Hole 20. Stoppage groove 21. Bell-shaped protrusion of 22. "O" rlng piston 23. Pressing part 24. "+" type leading rib 25. Assembly groove 26. Syringe needle cap 27:
protruded part SUMMARY OF THE INVENTION
In accordance with the present invention there is provided a safety syrlnge comprising:
(a) a cyllndrical hollow barrel member adapted to contaln a fluid and havlng first and second open ends and a female thread on the inside surface of said flrst end, said female thread being preselected to mate with a male thread on a needle holder body;
(b) a cyllndrlcally shaped needle holder body having a longitudinal axis, flrst and second axial.ends and further comprislng:
(1) a male thread on the curved outer surface thereof and being preselected to mate wlth said female thread, ~ 11) means on said first axlal end for receiving and holding the hub of an elongated hollow needle, (lii) a recess in said second axial end extending axlally along said longitudlnal axis to a depth part way toward said first axial end, (iv) first means for transmltting rotational torque integral with said body and located in said recess, and (v) a central bore extending through said holder body ~ 201 8363 along sald longltudinal axls;
~c) an elongated hollow needle including a hub, said hub exclusively held by said hub receiving and holding means;
td) an elongated plston rod; and (e~ a plston having inner and outer axlal ends and further comprlslng:
(1) means connectlng said lnner axlal end thereof to one end of sald piston rod, (ii) an integral central axially extending protrusion on sald outer axial end thereof constructed to flt within sald recess of sald needle holder body, and including (1) second means for transmittlng rotatlonal torque integral with said protrusion and constructed to coact with said flrst rotational torque transmltting means, (2) snap locking means on said protrusion and said holder body for snap locking sald protrusion to said holder body;
whereby said needle holder body may be initially positloned ln sald hollow barrel member wlth sald female 2~ thread engaging said male thread, and said piston on said plston rod may be lnserted into said second open end of said barrel member so that, upon relative axial displacement therebetween, fluid within said barrel is pumped through said central bore of said needle holder body and said hollow needle exclusively held thereon, and, whereby, upon said piston belng inserted, as aforesaid, and axially displaced, relative to said barrel member, to a position where at said piston central axially ~ 201 83b3 extendlng protrusion ls positloned within said recess of sald body with said second rotational torque transmltting means thereon engaged with sald first rotational torque transmitting means of sald body and with said snap locking means locking said protrusion with said body, then upon rotational tor~ue being applled to said piston rod, said torque is transmitted via said protruslon to said body to cause rotation of said body relative to aid barrel member to thereby release said male thread from said female thread following which axial movement of said locked protrusion and said body relative to said barrel member is facilitated, said last mentioned axial movement being sufficient to withdraw said needle completely within said first open end of said barrel member, thus preventing accidental contact of said needle means by an errant body part.
3. DETAILED EXPLANATION OF THE DESIGNs This design is about a safety syringe, especially by withdrawlng and fixing the syringe needle after use into the cylinder, lts reuse is prevented and there is no danger of getting in~ured by the needle, and, therefore, prevent contracting various contagious diseases.
Most syringes deslgned up to now have been the disposable types that can be discarded to prevent its reuse after in~ecting the liquld lnto the body of cyllnder, progressing, in~ecting into human body. Such disposable syrlnge shows only the technical method (i.e. stoppage protruslon and stoppage groove), not a baslc method for ` 69783-3 prevention of safety accident. Eventually, there are reports of examples where the exposed syringe needle, after iniectlon lnto an lnfected person, left alone, accidentally poked a nurse who performed the ln~ectlon or someone else which resulted ln contamination of the contagious disease (hepatitis and other disease, especially AIDS).
Consequently, the purpose of this design is, after performing in~ection lnto a human body, by withdrawing the syrlnge needle lnto the cyllnder of the syringe and flxing it there, the syrlnge needle contacts no one else, and thus prevent contracting of contagious disease at the same time stopping the needle from belng reused.
As a technical means of achleving this goal, this design, in an ordinary syringe that forms the needle and piston within the cylinder, screw is attached on the medicine in~ection entrance in the cylinder body, with one end needle-fixing cap of needle is attached, and the other end forms the needle-holding body so as to connect the piston and the front edge, and, therefore, after in~ection by fixlng the piston on the needle-holdlng body, one lnserts the above-mentioned needle-holding body into the cyllnder ltself and flxes lt, wlth one end of the above-mentioned needle-holding body, forming the fixed needle-cap or the female screw of the pre-assembled fixlng-cap, and the other end forming the candle-shape stoppage protrusion and many bell-shaped protrusions.
Furthermore, on the lnside wall toward the medlclne entrance of the cylinder, there ls a female screw part whose screw ls the opposite in direction as the female screw part of the needle-holding body. Thus it is screw-connected the male screw part of the needle-holding body, at the same time a candle-shaped stoppage groove and many bell-shaped protruslons are formed so as to connect and keep the needle-holding body.
~elow, examples of actual use of this design per the attached diagram will be described in detall. As dlagram 1 and dlagram 6 shows, the safety syringe of thls design (1) is consisted of a cylinder (2) of a constant diameter that can lead and move piston rod, the needle-fixing cap (3) that connects and keeps the syrlnge needle, the screw-connectlng needle-holding body (4) and the piston (6) that connects the end of the above-mentloned needle-holdlng body (4) formlng one slngle body wlth the plston rod (5) lnslde the cyllnder (2).
The above-mentloned cylinder (2) has cyllnder female screw part (8) formed on the inside wall (7) ln certain upper location where the above-mentloned needle-holdlng body (4) ls inserted and integrated, and in the lower part is formed the assembly protruslon (9) lnto whlch the stoppage groove of the later-mentioned "+" type leading rib rests assembled, and there is the grasping part (lO) with whlch the plston rod (5) can be pushed forward by holdlng the lower-most part manually.
Also, the needle-holding cap (3) holds steadfastly the needle (11) on its upper part, and on the lower part of the needle-holding cap (3) a flange (12) is formed protruding outside the outer perimeter of the needle-holding cap (3).
And, as the diagrams 1, 4 and 5 show, on the needle-holding body, the female screw part of the left screw, onto whlch flange part (12) of the above-mentioned needle-fixlng ~' cap (3) ls screwed, is formed on the inslde wall(l4~ of the needle-holdlng body (4), and the holdlng body male screw part (15) of the right screw is formed on the outer perimeter of the lower center of thls needle-holdlng body (4).
Also, rear edge of thls needle-holdlng body (4) ls formed the stoppage protruslon (16) protrudlng lnward lnslde the round openlng part (17~, and, on the surroundlng lnslde wall, many bell-shaped protrusions (12) of the hodlng body are formed protruding, and on the upper center of thls needle-holdlng body (4), a penetratlng hole (19) ls formed through whlch the ln~ected ll~uld passes. In short, as the dlagram 1 reveals, the male screw (15) of the needle-holdlng body (4), ln which the cylinder (2) becomes inserted, contacts the cyllnder female screw part (8) above the cyllnder (2) and tur-nlng ln the dlrectlon of the right screw by means of several manual operatlons or automatlc mechanical process, becomes flxed and connected lnslde the cyllnder (2), the flange part (12) of the needle-flxlng cap (3) that holds and keeps steadily the needle (11) to the female screw part of the flxing cap on the lnslde wall (14) of the needle-hodlng body thus connected and flxed becomes screw-connected in left screw dlrection, and so the needle-holdlng body (4) and the needle-fixlng cap (3) becomes connected and flxed above the cylinder (2).
Also, as dlagrams 1 and 4 show, on the plston (6) that ls assembled and inserted to the openlng part (17) of the rear edge of the above-mentloned needle-holdlng body (4), ls . ~ ~
~ 201 8363 formed a candle-shaped stoppage groove (20) on its front edge hinged on and so connected with the stoppage protrusion (16 of the above-mentloned needle-holding body (4), and a bell-shaped protruslon (21) intertwlned with the stoppage protruslon (16) of the above-mentloned needle-holdlng body (4), and also the bell-type protrusion (21) that becomes intertwined and connected wlth the above-mentioned U-shaped bell-type protrusion (18) protrudes on the outer perlmeter of the plston (6). Also, on thls plston (6) a "C" rlng (22) of rubber materlal ls flxed and thus closely in contact with the inslde wall (7) of the cyllnder (2), a "+" shaped leadlng rlb (24) and plston rod (5) are glued and flxed together lnto one body with round presslng part (23) ln one plece on the rear edge of thls plston (6). At a certaln place ln the lower side of this "+" shaped leading rib (24) are formed grooves (25) that can be hinge-connected with the assembly protrusion (9) of the above-mentloned cyllnder (2) as dlagrams 2, 3, and 6 show, and thus when the plston (6) moves downward, l.e. ln reverse dlrection, lt becomes hlnge-connected, and, ln so doing, can prevent the plston rod (5) from belng released completely. In sum, while the needle-holding body (4) and the needle fixlng cap (3) are lnterconnected with screw ln opposlte dlrectlon to the cylinder (2), upon removlng the syringe needle cap (26) as depicted as the lmaglnary line ln the dlagram 1, in~ectlng the medicine through the hole (1) of the needle-holdlng body by moving forward the piston (6) toward the entrance of the in~ected medlclne, makes the location of the plston (6) approximately as depicted ln 2~1 8363 diagram 3, and under such circumstances, upon removlng the syringe needle (11) from human body, movlng lt to the extent deplcted ln dlagram 4, the stoppage groove t20) of the piston (6) comes to rest in the stoppage protruslon (16) of the opening (17) of this needle-holding body (4) so that the plston (6) may get connected to the needle-holding body (4) inside the cylinder (2).
Diagram 7, an example of another application of this design, ls slmpllflcation of structure through forming a holding body male screw part ~15) ~ust around its outer perimeter on the needle-holding body (4) that comes screw-flxed inslde the cyllnder (2).
Different from the above-mentioned actual example, without forming a fixing cap female screw part (13) on the inside wall (14) of the needle-holding body (4) for screw-connecting, but simply forming a protruding part (27), the structure purports to malntain steadfastly the needle-fixing cap (3) by closely connecting the inside wall of the needle-fixing cap (3).
The following ls a detalled description of the workings and effects of the design, structured as above.
First o~ all, in screw-connectlng by lnserting the needle-holding body (4) into the cylinder (2), one inserts the needle-holding body (4) at the lower side of the cylinder (2) (on the grasping part (lO) side of diagrams 3 and 6), pushes lt up by certain length, turns approximately 1/4 to 1 turn clockwise the needle-holdlng body (4) elther manually or automatically at the point where the cylinder female screw part (2) on the lnside wall (7) of cylinder (2) touches the male screw part around the outer perlmeter of the needle-holding body (4), and, by so doing, connects and fixes lt inslde the cylinder (2).
Under such circumstances, as shown in diagram 1, one connects and fixes the syringe needle (11) in the imaglnary llne inside the needle-holding body (4) by screwing counterclockwise lts flange part (12) and the fixlng cap female screw part (13) on the lnslde wall (14) of the needle-holding body.
In screw-connecting this syringe needle (11), the screw-connecting dlrectlon must be the opposite of that between the cylinder (2) and the needle-holding body (4).
Thus whlle the needle-flxlng cap (13) is lnserted, upon removing the additlonal syringe needle cap (26) covering the syringe needle (11) as the imaginary llne in diagram 1, ln order to in~ect lnto a human body, one has to move forward the plston (6) of piston rod (5) approximately from sltuation shown in diagram 2 to that in dlagram 3.
Furthermore, upon performlng such ln~ectlon, after wlthdrawlng the syrlnge from the human body, pushlng up further toward the medlclne entrance the presslng part (23) of the "+" shaped leadlng rlb (24) as shown ln dlagram 4 entwlnes the bell-shaped protruslon of the needle-holding body (4) and the plston's bell-shaped protruslon (21) on the front edge of the piston (6) mutually, so that the front edge of the plston (6) becomes wound into the lnslde of the openlng (17) of the needle-holdlng body (4).
Thus, when the piston l6) comes squeezed into the opening part (17) of the needle-holdlng body (4), lt becomes posslble for the stoppage protruslon (16) of the needle-holdlng body (4) and the stoppage groove (20) becomes posslble to turn together as shown ln dlagram 4.
Such method of cogglng (between stoppage protruslon (16) and stoppage groove (20)) makes lt posslble to closely flx the piston (6) and the needle-holdlng body (4), thus preventing as a result the reuse of the syrlnge.
Furthermore, under such circumstances, turnlng the piston (6) clockwlse keeps the bell-shaped protrusion (18) of the opening part (17) of the needle-holdlng body (4) touchlng the bell-shaped protrusion (21) of the piston on the outer perimeter of the piston (6), hlnged in close contact.
This is the situation ln diagram 4. The mutually reverse dlrectlon of the candle-shaped part ln unltlng the needle-holding body (4) and the piston (6) by the above-mentioned bell-shaped protrusions (18)(21) makes it very easy to assemble the two materlals together.
In sum, while the needle-holding body (4) and the piston (6) connected by the bell-shaped protrusion (18)~21), turning approxlmately 1/4 to 1 turn the presslng part (23) of the "+" shaped leadlng rib (24) ln the screw-connectlng directlon of the plston (6), that ls, clockwlse, wlll release the screw- connectlon of the female screw of cyllnder (8) and the male screw part (15) of the holding body as in diagram 5.
Moreover, while the screw parts of the two are released pulllng the presslng part (23) of the "+" shaped leading rib (24) removes the plston (6) in reverse dlrection downward resulting in interconnection of the assembly protrusion (9) on the lnside wall (7) of the cylinder (2) and the assembly groove (25) of the "+" shaped leading rib (24l and consequently prevent the release of the needle-fixing cap (3), the needle-holdlng body (4) and the plston (6) at a certain place as shown in diagram 6.
In other words, upon in~ection the above-mentioned syringe needle (11) can be moved in reverse downward direction as in dlagram 6, thereby avolding belng poked by or have contact with, the syrlnge needle (11) because syrlnge needle (11) becomes contalned completely lnslde the cyllnder (2), and, consequently, preventing infection.
Furthermore, another example of a practical appllcatlon of thls deslgn is a structure that closely comblnes the inside wall of the needle-flxlng cap (3) wlth the outer perlmeter of the protruding part (27) of the needle-holdlng body, which ls a more slmpllfled structure and whose operatlon and effect are ldentlcal wlth the original example.
Consequently, according to this design, upon injecting into a human body, by fixing lnto the lnside of the cylinder (2) the needle-holding body that is connected to the syringe needle (11) out of sight, one ellminates the risk of the syrlnge needle (11) contactlng someone else and thereby prevent lnfectlon of contagious disease.
Furthermore, one can obtain the sealing effect by maklng the two auxiliary materlals that come lnto mutual 1~ 69783-3 ~ 20 1 8363 Also, according to this deslgn, upon in~ectlon, while connection ls complete between the needle-holdlng body (4) and the plston (6) wlth the stoppage protruslon (16) and the stoppage groove (20), the "+" shaped leading rlb (24), the combination of the assembly protrusion (9) and the assembly groove (25~ on the inside wall (7) of the cyllnder (2) can prevent the reuse of the syrlnge.
In concluslon, thls deslgn, by pulllng and flxlng, upon in~ection, the syringe needle attached to the cyllnder, is a useful one that can prevent the infectlon of contagious disease, especially AIDS.
Diagram 1: enlarged vertical cut diagram of the connection between the needle-fixing cap of imaginary line and the piston body while the needle-holding body inside the plston body of the syrlnge being designed.
Diagram 2 and 3: depicts the working of the piston on the syringe being designed.
Diagram 2: vertical cut diagram before in~ectlon.
Diagram 3: vertical cut diagram after iniection.
Diagram 4: enlarged vertical cut diagram of the needle-fixing cap, needle-maintaining body and plston comblned inside the cylinder being designed.
Diagram 5: enlarged vertical cut diagram of the syringe needle separating the needle-holding body inside the cylinder being designed.
Diagram 6: vertical cut diagram of the syringe needle pulled so as to be contained inside the body of the cylinder.
Diagram 7: enlarged vertical cut diagram of another example of operation of the design.
EXPLANATION OF CODES FOR THE IMPORTANT PARTS OF THE DIAGRAM
1. Syrlnge 3. Needle-fixing cap 4. Needle-holding body 5. Piston rod 6. Piston 7. Inside wall 8. Gylinder female screw part 9. Assembly protrusion 10. Grasping part 11. Needle 12. Flange 13. Flxing-cap female screw 14. Inside wall 15. Holdlng body male screw 1~. Stoppage protrusion 17. Opening 18. Bell-shaped protrusion of the holding body 19. Hole 20. Stoppage groove 21. Bell-shaped protrusion of 22. "O" rlng piston 23. Pressing part 24. "+" type leading rib 25. Assembly groove 26. Syringe needle cap 27:
protruded part SUMMARY OF THE INVENTION
In accordance with the present invention there is provided a safety syrlnge comprising:
(a) a cyllndrical hollow barrel member adapted to contaln a fluid and havlng first and second open ends and a female thread on the inside surface of said flrst end, said female thread being preselected to mate with a male thread on a needle holder body;
(b) a cyllndrlcally shaped needle holder body having a longitudinal axis, flrst and second axial.ends and further comprislng:
(1) a male thread on the curved outer surface thereof and being preselected to mate wlth said female thread, ~ 11) means on said first axlal end for receiving and holding the hub of an elongated hollow needle, (lii) a recess in said second axial end extending axlally along said longitudlnal axis to a depth part way toward said first axial end, (iv) first means for transmltting rotational torque integral with said body and located in said recess, and (v) a central bore extending through said holder body ~ 201 8363 along sald longltudinal axls;
~c) an elongated hollow needle including a hub, said hub exclusively held by said hub receiving and holding means;
td) an elongated plston rod; and (e~ a plston having inner and outer axlal ends and further comprlslng:
(1) means connectlng said lnner axlal end thereof to one end of sald piston rod, (ii) an integral central axially extending protrusion on sald outer axial end thereof constructed to flt within sald recess of sald needle holder body, and including (1) second means for transmittlng rotatlonal torque integral with said protrusion and constructed to coact with said flrst rotational torque transmltting means, (2) snap locking means on said protrusion and said holder body for snap locking sald protrusion to said holder body;
whereby said needle holder body may be initially positloned ln sald hollow barrel member wlth sald female 2~ thread engaging said male thread, and said piston on said plston rod may be lnserted into said second open end of said barrel member so that, upon relative axial displacement therebetween, fluid within said barrel is pumped through said central bore of said needle holder body and said hollow needle exclusively held thereon, and, whereby, upon said piston belng inserted, as aforesaid, and axially displaced, relative to said barrel member, to a position where at said piston central axially ~ 201 83b3 extendlng protrusion ls positloned within said recess of sald body with said second rotational torque transmltting means thereon engaged with sald first rotational torque transmitting means of sald body and with said snap locking means locking said protrusion with said body, then upon rotational tor~ue being applled to said piston rod, said torque is transmitted via said protruslon to said body to cause rotation of said body relative to aid barrel member to thereby release said male thread from said female thread following which axial movement of said locked protrusion and said body relative to said barrel member is facilitated, said last mentioned axial movement being sufficient to withdraw said needle completely within said first open end of said barrel member, thus preventing accidental contact of said needle means by an errant body part.
3. DETAILED EXPLANATION OF THE DESIGNs This design is about a safety syringe, especially by withdrawlng and fixing the syringe needle after use into the cylinder, lts reuse is prevented and there is no danger of getting in~ured by the needle, and, therefore, prevent contracting various contagious diseases.
Most syringes deslgned up to now have been the disposable types that can be discarded to prevent its reuse after in~ecting the liquld lnto the body of cyllnder, progressing, in~ecting into human body. Such disposable syrlnge shows only the technical method (i.e. stoppage protruslon and stoppage groove), not a baslc method for ` 69783-3 prevention of safety accident. Eventually, there are reports of examples where the exposed syringe needle, after iniectlon lnto an lnfected person, left alone, accidentally poked a nurse who performed the ln~ectlon or someone else which resulted ln contamination of the contagious disease (hepatitis and other disease, especially AIDS).
Consequently, the purpose of this design is, after performing in~ection lnto a human body, by withdrawing the syrlnge needle lnto the cyllnder of the syringe and flxing it there, the syrlnge needle contacts no one else, and thus prevent contracting of contagious disease at the same time stopping the needle from belng reused.
As a technical means of achleving this goal, this design, in an ordinary syringe that forms the needle and piston within the cylinder, screw is attached on the medicine in~ection entrance in the cylinder body, with one end needle-fixing cap of needle is attached, and the other end forms the needle-holding body so as to connect the piston and the front edge, and, therefore, after in~ection by fixlng the piston on the needle-holdlng body, one lnserts the above-mentioned needle-holding body into the cyllnder ltself and flxes lt, wlth one end of the above-mentioned needle-holding body, forming the fixed needle-cap or the female screw of the pre-assembled fixlng-cap, and the other end forming the candle-shape stoppage protrusion and many bell-shaped protrusions.
Furthermore, on the lnside wall toward the medlclne entrance of the cylinder, there ls a female screw part whose screw ls the opposite in direction as the female screw part of the needle-holding body. Thus it is screw-connected the male screw part of the needle-holding body, at the same time a candle-shaped stoppage groove and many bell-shaped protruslons are formed so as to connect and keep the needle-holding body.
~elow, examples of actual use of this design per the attached diagram will be described in detall. As dlagram 1 and dlagram 6 shows, the safety syringe of thls design (1) is consisted of a cylinder (2) of a constant diameter that can lead and move piston rod, the needle-fixing cap (3) that connects and keeps the syrlnge needle, the screw-connectlng needle-holding body (4) and the piston (6) that connects the end of the above-mentloned needle-holdlng body (4) formlng one slngle body wlth the plston rod (5) lnslde the cyllnder (2).
The above-mentloned cylinder (2) has cyllnder female screw part (8) formed on the inside wall (7) ln certain upper location where the above-mentloned needle-holdlng body (4) ls inserted and integrated, and in the lower part is formed the assembly protruslon (9) lnto whlch the stoppage groove of the later-mentioned "+" type leading rib rests assembled, and there is the grasping part (lO) with whlch the plston rod (5) can be pushed forward by holdlng the lower-most part manually.
Also, the needle-holding cap (3) holds steadfastly the needle (11) on its upper part, and on the lower part of the needle-holding cap (3) a flange (12) is formed protruding outside the outer perimeter of the needle-holding cap (3).
And, as the diagrams 1, 4 and 5 show, on the needle-holding body, the female screw part of the left screw, onto whlch flange part (12) of the above-mentioned needle-fixlng ~' cap (3) ls screwed, is formed on the inslde wall(l4~ of the needle-holdlng body (4), and the holdlng body male screw part (15) of the right screw is formed on the outer perimeter of the lower center of thls needle-holdlng body (4).
Also, rear edge of thls needle-holdlng body (4) ls formed the stoppage protruslon (16) protrudlng lnward lnslde the round openlng part (17~, and, on the surroundlng lnslde wall, many bell-shaped protrusions (12) of the hodlng body are formed protruding, and on the upper center of thls needle-holdlng body (4), a penetratlng hole (19) ls formed through whlch the ln~ected ll~uld passes. In short, as the dlagram 1 reveals, the male screw (15) of the needle-holdlng body (4), ln which the cylinder (2) becomes inserted, contacts the cyllnder female screw part (8) above the cyllnder (2) and tur-nlng ln the dlrectlon of the right screw by means of several manual operatlons or automatlc mechanical process, becomes flxed and connected lnslde the cyllnder (2), the flange part (12) of the needle-flxlng cap (3) that holds and keeps steadily the needle (11) to the female screw part of the flxing cap on the lnslde wall (14) of the needle-hodlng body thus connected and flxed becomes screw-connected in left screw dlrection, and so the needle-holdlng body (4) and the needle-fixlng cap (3) becomes connected and flxed above the cylinder (2).
Also, as dlagrams 1 and 4 show, on the plston (6) that ls assembled and inserted to the openlng part (17) of the rear edge of the above-mentloned needle-holdlng body (4), ls . ~ ~
~ 201 8363 formed a candle-shaped stoppage groove (20) on its front edge hinged on and so connected with the stoppage protrusion (16 of the above-mentloned needle-holding body (4), and a bell-shaped protruslon (21) intertwlned with the stoppage protruslon (16) of the above-mentloned needle-holdlng body (4), and also the bell-type protrusion (21) that becomes intertwined and connected wlth the above-mentioned U-shaped bell-type protrusion (18) protrudes on the outer perlmeter of the plston (6). Also, on thls plston (6) a "C" rlng (22) of rubber materlal ls flxed and thus closely in contact with the inslde wall (7) of the cyllnder (2), a "+" shaped leadlng rlb (24) and plston rod (5) are glued and flxed together lnto one body with round presslng part (23) ln one plece on the rear edge of thls plston (6). At a certaln place ln the lower side of this "+" shaped leading rib (24) are formed grooves (25) that can be hinge-connected with the assembly protrusion (9) of the above-mentloned cyllnder (2) as dlagrams 2, 3, and 6 show, and thus when the plston (6) moves downward, l.e. ln reverse dlrection, lt becomes hlnge-connected, and, ln so doing, can prevent the plston rod (5) from belng released completely. In sum, while the needle-holding body (4) and the needle fixlng cap (3) are lnterconnected with screw ln opposlte dlrectlon to the cylinder (2), upon removlng the syringe needle cap (26) as depicted as the lmaglnary line ln the dlagram 1, in~ectlng the medicine through the hole (1) of the needle-holdlng body by moving forward the piston (6) toward the entrance of the in~ected medlclne, makes the location of the plston (6) approximately as depicted ln 2~1 8363 diagram 3, and under such circumstances, upon removlng the syringe needle (11) from human body, movlng lt to the extent deplcted ln dlagram 4, the stoppage groove t20) of the piston (6) comes to rest in the stoppage protruslon (16) of the opening (17) of this needle-holding body (4) so that the plston (6) may get connected to the needle-holding body (4) inside the cylinder (2).
Diagram 7, an example of another application of this design, ls slmpllflcation of structure through forming a holding body male screw part ~15) ~ust around its outer perimeter on the needle-holding body (4) that comes screw-flxed inslde the cyllnder (2).
Different from the above-mentioned actual example, without forming a fixing cap female screw part (13) on the inside wall (14) of the needle-holding body (4) for screw-connecting, but simply forming a protruding part (27), the structure purports to malntain steadfastly the needle-fixing cap (3) by closely connecting the inside wall of the needle-fixing cap (3).
The following ls a detalled description of the workings and effects of the design, structured as above.
First o~ all, in screw-connectlng by lnserting the needle-holding body (4) into the cylinder (2), one inserts the needle-holding body (4) at the lower side of the cylinder (2) (on the grasping part (lO) side of diagrams 3 and 6), pushes lt up by certain length, turns approximately 1/4 to 1 turn clockwise the needle-holdlng body (4) elther manually or automatically at the point where the cylinder female screw part (2) on the lnside wall (7) of cylinder (2) touches the male screw part around the outer perlmeter of the needle-holding body (4), and, by so doing, connects and fixes lt inslde the cylinder (2).
Under such circumstances, as shown in diagram 1, one connects and fixes the syringe needle (11) in the imaglnary llne inside the needle-holding body (4) by screwing counterclockwise lts flange part (12) and the fixlng cap female screw part (13) on the lnslde wall (14) of the needle-holding body.
In screw-connecting this syringe needle (11), the screw-connecting dlrectlon must be the opposite of that between the cylinder (2) and the needle-holding body (4).
Thus whlle the needle-flxlng cap (13) is lnserted, upon removing the additlonal syringe needle cap (26) covering the syringe needle (11) as the imaginary llne in diagram 1, ln order to in~ect lnto a human body, one has to move forward the plston (6) of piston rod (5) approximately from sltuation shown in diagram 2 to that in dlagram 3.
Furthermore, upon performlng such ln~ectlon, after wlthdrawlng the syrlnge from the human body, pushlng up further toward the medlclne entrance the presslng part (23) of the "+" shaped leadlng rlb (24) as shown ln dlagram 4 entwlnes the bell-shaped protruslon of the needle-holding body (4) and the plston's bell-shaped protruslon (21) on the front edge of the piston (6) mutually, so that the front edge of the plston (6) becomes wound into the lnslde of the openlng (17) of the needle-holdlng body (4).
Thus, when the piston l6) comes squeezed into the opening part (17) of the needle-holdlng body (4), lt becomes posslble for the stoppage protruslon (16) of the needle-holdlng body (4) and the stoppage groove (20) becomes posslble to turn together as shown ln dlagram 4.
Such method of cogglng (between stoppage protruslon (16) and stoppage groove (20)) makes lt posslble to closely flx the piston (6) and the needle-holdlng body (4), thus preventing as a result the reuse of the syrlnge.
Furthermore, under such circumstances, turnlng the piston (6) clockwlse keeps the bell-shaped protrusion (18) of the opening part (17) of the needle-holdlng body (4) touchlng the bell-shaped protrusion (21) of the piston on the outer perimeter of the piston (6), hlnged in close contact.
This is the situation ln diagram 4. The mutually reverse dlrectlon of the candle-shaped part ln unltlng the needle-holding body (4) and the piston (6) by the above-mentioned bell-shaped protrusions (18)(21) makes it very easy to assemble the two materlals together.
In sum, while the needle-holding body (4) and the piston (6) connected by the bell-shaped protrusion (18)~21), turning approxlmately 1/4 to 1 turn the presslng part (23) of the "+" shaped leadlng rib (24) ln the screw-connectlng directlon of the plston (6), that ls, clockwlse, wlll release the screw- connectlon of the female screw of cyllnder (8) and the male screw part (15) of the holding body as in diagram 5.
Moreover, while the screw parts of the two are released pulllng the presslng part (23) of the "+" shaped leading rib (24) removes the plston (6) in reverse dlrection downward resulting in interconnection of the assembly protrusion (9) on the lnside wall (7) of the cylinder (2) and the assembly groove (25) of the "+" shaped leading rib (24l and consequently prevent the release of the needle-fixing cap (3), the needle-holdlng body (4) and the plston (6) at a certain place as shown in diagram 6.
In other words, upon in~ection the above-mentioned syringe needle (11) can be moved in reverse downward direction as in dlagram 6, thereby avolding belng poked by or have contact with, the syrlnge needle (11) because syrlnge needle (11) becomes contalned completely lnslde the cyllnder (2), and, consequently, preventing infection.
Furthermore, another example of a practical appllcatlon of thls deslgn is a structure that closely comblnes the inside wall of the needle-flxlng cap (3) wlth the outer perlmeter of the protruding part (27) of the needle-holdlng body, which ls a more slmpllfled structure and whose operatlon and effect are ldentlcal wlth the original example.
Consequently, according to this design, upon injecting into a human body, by fixing lnto the lnside of the cylinder (2) the needle-holding body that is connected to the syringe needle (11) out of sight, one ellminates the risk of the syrlnge needle (11) contactlng someone else and thereby prevent lnfectlon of contagious disease.
Furthermore, one can obtain the sealing effect by maklng the two auxiliary materlals that come lnto mutual 1~ 69783-3 ~ 20 1 8363 Also, according to this deslgn, upon in~ectlon, while connection ls complete between the needle-holdlng body (4) and the plston (6) wlth the stoppage protruslon (16) and the stoppage groove (20), the "+" shaped leading rlb (24), the combination of the assembly protrusion (9) and the assembly groove (25~ on the inside wall (7) of the cyllnder (2) can prevent the reuse of the syrlnge.
In concluslon, thls deslgn, by pulllng and flxlng, upon in~ection, the syringe needle attached to the cyllnder, is a useful one that can prevent the infectlon of contagious disease, especially AIDS.
Claims (2)
1. A safety syringe comprising:
(a) a cylindrical hollow barrel member adapted to contain a fluid and having first and second open ends and a female thread on the inside surface of said first end, said female thread being preselected to mate with a male thread on a needle holder body;
(b) a cylindrically shaped needle holder body having a longitudinal axis, first and second axial ends and further comprising:
(i) a male thread on the curved outer surface thereof and being preselected to mate with said female thread, (ii) means on said first axial end for receiving and holding the hub of an elongated hollow needle, (iii) a recess in said second axial end extending axially along said longitudinal axis to a depth part way toward said first axial end, (iv) first means for transmitting rotational torque integral with said body and located in said recess, and (v) a central bore extending through said holder body along said longitudinal axis;
(c) an elongated hollow needle including a hub, said hub exclusively held by said hub receiving and holding means;
(d) an elongated piston rod; and (e) a piston having inner and outer axial ends and further comprising:
(i) means connecting said inner axial end thereof to one end of said piston rod, (ii) an integral central axially extending protrusion on said outer axial end thereof constructed to fit within said recess of said needle holder body, and including (1) second means for transmitting rotational torque integral with said protrusion and constructed to coact with said first rotational torque transmitting means, (2) snap locking means on said protrusion and said holder body for snap locking said protrusion to said holder body;
whereby said needle holder body may be initially positioned in said hollow barrel member with said female thread engaging said male thread, and said piston on said piston rod may be inserted into said second open end of said barrel member so that, upon relative axial displacement therebetween, fluid within said barrel is pumped through said central bore of said needle holder body and said hollow needle exclusively held thereon, and, whereby, upon said piston being inserted, as aforesaid, and axially displaced, relative to said barrel member, to a position where at said piston central axially extending protrusion is positioned within said recess of said body with said second rotational torque transmitting means thereon engaged with said first rotational torque transmitting means of said body and with said snap locking means locking said protrusion with said body, then upon rotational torque being applied to said piston rod, said torque is transmitted via said protrusion to said body to cause rotation of said body relative to said barrel member to thereby release said male thread from said female thread following which axial movement of said locked protrusion and said body relative to said barrel member is facilitated, said last mentioned axial movement being sufficient to withdraw said needle completely within said first open end of said barrel member, thus preventing accidental contact of said needle means by an errant body part.
(a) a cylindrical hollow barrel member adapted to contain a fluid and having first and second open ends and a female thread on the inside surface of said first end, said female thread being preselected to mate with a male thread on a needle holder body;
(b) a cylindrically shaped needle holder body having a longitudinal axis, first and second axial ends and further comprising:
(i) a male thread on the curved outer surface thereof and being preselected to mate with said female thread, (ii) means on said first axial end for receiving and holding the hub of an elongated hollow needle, (iii) a recess in said second axial end extending axially along said longitudinal axis to a depth part way toward said first axial end, (iv) first means for transmitting rotational torque integral with said body and located in said recess, and (v) a central bore extending through said holder body along said longitudinal axis;
(c) an elongated hollow needle including a hub, said hub exclusively held by said hub receiving and holding means;
(d) an elongated piston rod; and (e) a piston having inner and outer axial ends and further comprising:
(i) means connecting said inner axial end thereof to one end of said piston rod, (ii) an integral central axially extending protrusion on said outer axial end thereof constructed to fit within said recess of said needle holder body, and including (1) second means for transmitting rotational torque integral with said protrusion and constructed to coact with said first rotational torque transmitting means, (2) snap locking means on said protrusion and said holder body for snap locking said protrusion to said holder body;
whereby said needle holder body may be initially positioned in said hollow barrel member with said female thread engaging said male thread, and said piston on said piston rod may be inserted into said second open end of said barrel member so that, upon relative axial displacement therebetween, fluid within said barrel is pumped through said central bore of said needle holder body and said hollow needle exclusively held thereon, and, whereby, upon said piston being inserted, as aforesaid, and axially displaced, relative to said barrel member, to a position where at said piston central axially extending protrusion is positioned within said recess of said body with said second rotational torque transmitting means thereon engaged with said first rotational torque transmitting means of said body and with said snap locking means locking said protrusion with said body, then upon rotational torque being applied to said piston rod, said torque is transmitted via said protrusion to said body to cause rotation of said body relative to said barrel member to thereby release said male thread from said female thread following which axial movement of said locked protrusion and said body relative to said barrel member is facilitated, said last mentioned axial movement being sufficient to withdraw said needle completely within said first open end of said barrel member, thus preventing accidental contact of said needle means by an errant body part.
2. Apparatus of claim 1 further characterized by said first and second rotational torque transmitting means being a plurality of longitudinally extending ribs, the ribs on said body extending radially inward and the ribs on said piston central protrusion extending radially outward.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR8290 | 1989-06-15 | ||
| KR2019890008290U KR910004532Y1 (en) | 1989-06-15 | 1989-06-15 | Syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2018363A1 CA2018363A1 (en) | 1990-12-06 |
| CA2018363C true CA2018363C (en) | 1995-12-05 |
Family
ID=19287150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002018363A Expired - Fee Related CA2018363C (en) | 1989-06-06 | 1990-06-06 | Safety syringe |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0402908B1 (en) |
| JP (1) | JPH0649071B2 (en) |
| KR (1) | KR910004532Y1 (en) |
| AT (1) | ATE105717T1 (en) |
| CA (1) | CA2018363C (en) |
| DE (1) | DE59005710D1 (en) |
| DK (1) | DK0402908T3 (en) |
| ES (1) | ES2054150T3 (en) |
| IE (1) | IE64714B1 (en) |
| NO (1) | NO176005C (en) |
| PT (1) | PT94379A (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0482060A1 (en) * | 1989-07-11 | 1992-04-29 | WILLIAMS, Graham Hugh | Disposable hypodermic syringe with retractable needle |
| MX173117B (en) * | 1989-12-12 | 1994-02-01 | Michael L Haining | SIMPLIFIED RETRAIBLE NEEDLE SYRINGE |
| US5205824A (en) * | 1991-06-13 | 1993-04-27 | Mazur Matthew S | Retractable syringe with a closed barrel |
| GB2266667B (en) * | 1992-05-06 | 1996-04-24 | Product Research Ltd | Disposable hypodermic syringe |
| US5273543A (en) * | 1992-12-14 | 1993-12-28 | Becton, Dickinson And Company | Safety needle syringe |
| JP2527703B2 (en) * | 1993-03-12 | 1996-08-28 | 嘉邦 斎藤 | Syringe and method of assembling syringe |
| JP2527704B2 (en) * | 1993-04-06 | 1996-08-28 | 嘉邦 斎藤 | Syringe for syringe |
| DE9315861U1 (en) * | 1993-10-18 | 1995-02-23 | MEDI plus TEC Medizinisch-technische Handelsgesellschaft mbH, 47441 Moers | Hypodermic syringe |
| GB9408773D0 (en) * | 1994-05-04 | 1994-06-22 | Product Research Ltd | Retractable hypodermic syringe |
| DE69825982T2 (en) * | 1997-04-25 | 2005-09-15 | Saito, Yoshikuni, Nasu | SYRINGE |
| GB2341804B (en) * | 1998-09-25 | 2003-02-12 | David William Parker | Improvements in or relating to hypodermic syringes |
| WO2002013722A1 (en) * | 2000-08-11 | 2002-02-21 | Prima Technologies Limited | Needle nib insert |
| KR20030043209A (en) * | 2001-11-27 | 2003-06-02 | 주식회사 세즈메디컬 | Safety syringe |
| KR100456099B1 (en) * | 2002-01-28 | 2004-11-06 | 주식회사 세즈메디컬 | Safety syringe |
| US7285110B2 (en) | 2003-06-10 | 2007-10-23 | P. Rowan Smith, Jr. | Retractable hypodermic safety syringe |
| CA2536845C (en) * | 2006-02-16 | 2009-10-27 | Pka Softtouch Corp. | Drug delivery device |
| KR200454414Y1 (en) * | 2009-10-07 | 2011-07-01 | 주식회사 대웅제약 | Medicine syringe |
| CZ305238B6 (en) * | 2014-04-09 | 2015-06-24 | Jan KavalĂrek | Connecting gear of needle with piston for safety syringe |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH620126A5 (en) * | 1978-03-10 | 1980-11-14 | Tulcea Sa | |
| US4692156A (en) * | 1985-12-06 | 1987-09-08 | Irene Haller | Disposable syringe with retractable cannula |
| US4747830A (en) * | 1986-04-28 | 1988-05-31 | Gloyer Walter W | Anti-stick contagion free disposable hypodermic safety syringe |
| US4861338A (en) * | 1988-02-11 | 1989-08-29 | Mediverse Inc. | Safety syringe |
| US4978340A (en) * | 1988-06-15 | 1990-12-18 | Alteron Incorporated | Syringe with retractable needle |
-
1989
- 1989-06-15 KR KR2019890008290U patent/KR910004532Y1/en not_active Expired
-
1990
- 1990-06-06 CA CA002018363A patent/CA2018363C/en not_active Expired - Fee Related
- 1990-06-13 AT AT90111223T patent/ATE105717T1/en not_active IP Right Cessation
- 1990-06-13 ES ES90111223T patent/ES2054150T3/en not_active Expired - Lifetime
- 1990-06-13 NO NO902623A patent/NO176005C/en unknown
- 1990-06-13 EP EP90111223A patent/EP0402908B1/en not_active Expired - Lifetime
- 1990-06-13 DK DK90111223.5T patent/DK0402908T3/en active
- 1990-06-13 DE DE59005710T patent/DE59005710D1/en not_active Expired - Fee Related
- 1990-06-14 JP JP2154134A patent/JPH0649071B2/en not_active Expired - Lifetime
- 1990-06-14 IE IE214990A patent/IE64714B1/en not_active IP Right Cessation
- 1990-06-15 PT PT94379A patent/PT94379A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO176005B (en) | 1994-10-10 |
| ATE105717T1 (en) | 1994-06-15 |
| IE902149A1 (en) | 1991-06-19 |
| NO902623D0 (en) | 1990-06-13 |
| JPH0649071B2 (en) | 1994-06-29 |
| ES2054150T3 (en) | 1994-08-01 |
| IE902149L (en) | 1990-12-15 |
| NO902623L (en) | 1990-12-17 |
| JPH0397468A (en) | 1991-04-23 |
| PT94379A (en) | 1991-02-08 |
| KR910000318U (en) | 1991-01-22 |
| KR910004532Y1 (en) | 1991-06-29 |
| DK0402908T3 (en) | 1994-06-20 |
| NO176005C (en) | 1995-01-18 |
| CA2018363A1 (en) | 1990-12-06 |
| DE59005710D1 (en) | 1994-06-23 |
| EP0402908A1 (en) | 1990-12-19 |
| EP0402908B1 (en) | 1994-05-18 |
| IE64714B1 (en) | 1995-08-23 |
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| JP3085381U (en) | Disposable safety syringe |
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