IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0989794
(2001-11-19)
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발명자
/ 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
Knobbe, Martens, Olson & Bear, LLP
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인용정보 |
피인용 횟수 :
102 인용 특허 :
167 |
초록
▼
A closed system, needleless valve device includes a generally tubular body defining an internal cavity. On the proximal end of the body there is an opening which is preferably sufficiently large to receive an ANSI standard tip of a medical implement. The distal end of the body has a generally tubula
A closed system, needleless valve device includes a generally tubular body defining an internal cavity. On the proximal end of the body there is an opening which is preferably sufficiently large to receive an ANSI standard tip of a medical implement. The distal end of the body has a generally tubular skirt. The valve also includes a hollow spike having a closed tip. The spike includes at least one longitudinal 18-gauge hole located distal the tip, and is seated inside the cavity such that the tip is below the proximal end of the body. An annular support cuff is connected to the spike which seals off a portion of the cavity of the body such that an upper cavity containing the tip is defined. The valve also includes a plastic, resilient silicone seal which fills the upper cavity and opening and covers the tip of the spike so as to present a flush surface. An adaptor enables the valve to be attached to a resealable container.
대표청구항
▼
A closed system, needleless valve device includes a generally tubular body defining an internal cavity. On the proximal end of the body there is an opening which is preferably sufficiently large to receive an ANSI standard tip of a medical implement. The distal end of the body has a generally tubula
A closed system, needleless valve device includes a generally tubular body defining an internal cavity. On the proximal end of the body there is an opening which is preferably sufficiently large to receive an ANSI standard tip of a medical implement. The distal end of the body has a generally tubular skirt. The valve also includes a hollow spike having a closed tip. The spike includes at least one longitudinal 18-gauge hole located distal the tip, and is seated inside the cavity such that the tip is below the proximal end of the body. An annular support cuff is connected to the spike which seals off a portion of the cavity of the body such that an upper cavity containing the tip is defined. The valve also includes a plastic, resilient silicone seal which fills the upper cavity and opening and covers the tip of the spike so as to present a flush surface. An adaptor enables the valve to be attached to a resealable container. a pressure of the gas spring prior to activation sufficient for expelling and injecting the medicament, wherein the energy source is configured for releasing the gas after the expelling of the medicament. 2. The jet injector of claim 1 further comprising a needle operatively associated with the proximal end of the cartridge assembly and having a piercing end extending toward the chamber, wherein the stopper is movable within the chamber toward the piercing end of the needle and relative movement between the stopper and the needle causes the piercing end of the needle to pierce the stopper to create a fluid pathway for the medicament through the needle and movement of the plunger toward the proximal end of the chamber compresses the medicament held between the plunger and the stopper so that the medicament is expelled through the fluid pathway. 3. The jet injector of claim 2 wherein the stopper has a frustroconical shape. 4. The jet injector of claim 3 wherein the plunger has a medicament contacting surface configured and dimensioned to mate with the frustroconical shape of the stopper to minimize volume of medicament remaining in the chamber after the injection is completed. 5. The jet injector of claim 4 wherein the stopper has a narrow cross-section where the needle penetrates the stopper. 6. The jet injector of claim 2 wherein movement of the plunger toward the proximal end of the chamber compresses the medicament between the stopper and the plunger to move the stopper toward the proximal end of the cartridge assembly to allow the piercing end of the needle to pierce the stopper and create the fluid pathway for the medicament through the needle. 7. The jet injector of claim 2 wherein the piercing end of the needle has a bevel. 8. The jet injector of claim 1 wherein the cartridge assembly comprises an outer housing made of a polymer and an inner housing made of a glass. 9. The jet injector of claim 1 wherein at least a portion of the plunger and stopper is made of an elastomeric material. 10. The jet injector of claim 1 wherein the plunger comprises a front member having a recess and an insert received in the recess, the insert being substantially non-compressible. 11. The jet injector of claim 1 wherein at least one of the plunger and stopper includes ridges formed around an outer periphery to provide a seal and create a sterile boundary between the medicament and an exterior of the cartridge assembly. 12. The jet injector of claim 1 wherein the gas spring has a wall with a coating to reduce gas permeability. 13. The jet injector of claim 1 further comprising a safety vent for releasing excess pressure. 14. The jet injector of claim 1 further comprising a temperature indicator for indicating that the jet injector has been exposed to temperatures outside of a set range. 15. A jet injector comprising: a cartridge assembly for holding medicament, the cartridge assembly having proximal and distal ends and comprising: a chamber having proximal and distal ends for holding the medicament therein; an orifice at the proximal end of the cartridge assembly; a stopper at the proximal end of the chamber; a plunger at the distal end of the chamber and movable towards the stopper to expel medicament out of the chamber through the orifice; locking tabs disposed at the distal end of the cartridge assembly; and a power pack assembly comprising: a trigger; an energy source comprising a gas spring comprising a material in a gaseous phase operatively associated with the trigger so that movement of the trigger activates the energy source to move the plunger toward the stopper to expel medicament from the chamber; and a housing having a proximal end operatively coupled with the distal end of the cartridge assembly, the power pack assembly housing including: a distal housing having a lumen containing the material; and a proximal housing connectable with the distal housing and having an inner surface with a ledge for receiving the locking tabs to couple the cartridge assembly thereto. 16. The jet injector of claim 15 further comprising a ram having proximal and distal ends, the proximal end contacting the plunger and the distal end having a seal, wherein the gas spring is defined by the lumen wall and the seal. 17. The jet injector of claim 16 wherein the ram has a recess and the inner surface of the proximal housing has a latch member insertable into the recess to thereby prevent the gas spring from moving the ram and the plunger toward the stopper and wherein movement of the trigger allows the latch member to bend away from the recess to thereby allow the gas spring to move the ram and the plunger toward the stopper. 18. The jet injector of claim 17 wherein the trigger comprises a tubular body substantially covering the cartridge assembly, a cap operatively associated with the proximal housing, and struts connecting the body and the cap. 19. The jet injector of claim 16 wherein the spring material is carbon dioxide. 20. The jet injector of claim 15 wherein a portion of an exterior surface of the proximal housing has threads and a portion of a lumen wall has threads, the proximal housing threads mating with the lumen wall threads to connect the proximal and distal housings. 21. The jet injector of claim 15, wherein the gas spring comprises a liquid phase in equilibrium with the gaseous phase to maintain a pressure of the gaseous phase prior to activation. 22. A jet injector comprising: a cartridge assembly for holding medicament, the cartridge assembly having proximal and distal ends and comprising: a chamber for holding the medicament therein and having proximal and distal ends with an orifice at the proximal end for passage of the medicament therethrough; and a plunger at the distal end of the chamber and movable towards the orifice to expel medicament out of the chamber through the orifice; and a power pack assembly comprising: a housing having a proximal end operatively coupled with the distal end of the cartridge assembly; a trigger; and an energy source operatively associated with the trigger so that movement of the trigger causes the energy source to move the plunger toward the orifice to expel medicament from the chamber, wherein the energy source comprises a gas spring of a spring material in a gaseous phase and a charging portion of the spring material in a liquid phase that is in equilibrium with the gaseous phase for compensating for leakage to maintain a pressure of the gas spring, prior to the movement of the trigger, sufficient for expelling and injecting the medicament, wherein the energy source is configured for releasing the gas after the expelling of the medicament. 23. The jet injector of claim 22, further comprising a ram that is biased by the gas spring towards the plunger for expelling the medicament when the trigger is moved, wherein the ram comprises a seal that is sealingly associated with the gas spring to seal the gas therein, the energy source and seal being configured for allowing the gas to escape after the expelling of the medicament. 24. The jet injector of claim 23, further comprising a latch member preventing movement of the ram to move the plunger, wherein the trigger is operably associated with the latch member for causing the latch member to release the ram to permit the movement of the ram against the plunger. 25. The jet injector of claim 22, further comprising a temperature sensor configured for disabling the injector to prevent the expelling of the medicament. 26. The jet injector of claim 22, wherein the energy source is configured for substantially completely depressurizing the gas after the expelling of the medicament. 27. The jet injector of claim 22, wherein the energy source is configured for releasing the gas after the expelling of the medicament to substantially prevent repressurization by a user. 28. The jet injector of claim 22, further comprising a ram that is biased prior to t he movement of the trigger by the energy source towards the plunger for expelling the medicament when the trigger is moved. 29. A jet injector comprising: a cartridge assembly for holding medicament, the cartridge assembly having proximal and distal ends and comprising: a chamber for holding the medicament therein and having proximal and distal ends with an orifice at the proximal end for passage of the medicament therethrough; and a plunger at the distal end of the chamber and movable towards the orifice to expel medicament out of the chamber through the orifice; and a power pack assembly comprising: a housing having a proximal end operatively coupled with the distal end of the cartridge assembly; a trigger; a ram configured and disposed for moving the plunger to expel the medicament; and an energy source comprising a gas spring containing gas associated with the trigger so that movement of the trigger causes the energy source to move the ram towards the plunger to expel the medicament from the chamber, wherein the gas spring biases the ram towards the plunger prior to the movement of the trigger, and the energy source is configured for releasing the gas after the expelling of the medicament. 30. The jet injector of claim 29, further comprising a latch member preventing movement of the ram to move the plunger, wherein the trigger is operably associated with the latch member for causing the latch member to release the ram to permit the movement of the ram against the plunger. 31. The jet injector of claim 29, wherein the energy source is configured for releasing the gas after the expelling of the medicament. 32. The jet injector of claim 29, wherein the gas is of a spring material in a gaseous phase, and the gas spring comprises a charging portion of the spring material in a liquid phase that is in equilibrium with the gaseous phase for compensating for leakage to maintain a pressure of the gas spring, prior to the movement of the trigger, sufficient for expelling and injecting the medicament.
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