[특허]Positive displacement flush syringe

Positive displacement flush syringe 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-005/315 A61M-005/50 A61M-025/00 A61M-005/31 A61M-005/32 A61M-025/10 A61M-005/14
출원번호	US-0348509 (2016-11-10)
등록번호	US-10105494 (2018-10-23)
발명자 / 주소	Alheidt, Thomas A. Kosinski, Anthony J.
출원인 / 주소	Becton, Dickinson and Company
대리인 / 주소	Servilla Whitney LLC
인용정보	피인용 횟수 : 0 인용 특허 : 48

초록 ▼

A flush syringe assembly comprises a barrel including a cylindrical side wall having an inside surface defining a chamber for retaining fluid, an open proximal end and a distal end having a passageway therethrough in fluid communication with the chamber. A plunger including an elongate body portion having a stopper at its distal end is provided. The stopper is slidably positioned in fluid-tight engagement with the inside surface of the barrel for driving fluid out of the chamber through the passageway. The stopper includes a distal portion and a proximal portion separated by a spring element and configured to compress when fluid is being driven through the passageway by motion of the plunger and to continue to drive fluid through the passageway after motion of the plunger has stopped.

대표청구항 ▼

1. A flush syringe assembly comprising: a barrel including a cylindrical side wall having an inside surface defining a chamber for retaining fluid, an open proximal end and a distal end including a distal wall with a tip extending distally therefrom having a passageway therethrough in fluid communication with said chamber;a plunger including an elongate body portion having a proximal end and a distal end, a stopper slidably positioned in fluid-tight engagement with said inside surface of said barrel for driving fluid out of said chamber by movement of said stopper relative to said barrel, said elongate body portion extending outwardly from said open proximal end of said barrel;a discontinuity on said plunger for engaging said barrel for stopping the distal motion of said plunger before said stopper fully delivers all liquid from said chamber,said stopper including a proximal stopper portion having annular sealing ribs, a plurality of axial grooves cutting through the annular sealing ribs, the proximal stopper portion connected to said distal end of said plunger and a distal stopper portion separated from said proximal stopper portion by a spring for moving said distal stopper portion in a distal direction to drive more liquid out of said chamber after said discontinuity on said plunger engages said barrel to stop distal motion of said plunger. 2. The syringe assembly of claim 1, wherein said distal stopper portion has at least one circumferential rib engaging said inside surface of said barrel and said proximal stopper portion has at least two circumferential ribs engaging said inside surface of said barrel. 3. The syringe assembly of claim 1, wherein the distal end of the barrel includes a locking luer type collar concentrically surrounding the tip. 4. The syringe assembly of claim 1, wherein the collar includes an inside surface having at least one thread thereon. 5. The syringe assembly of claim 1, wherein said spring element includes a coil spring. 6. The syringe assembly of claim 1, wherein said spring is an annular cantilevered element. 7. The syringe assembly of claim 6, wherein the annular cantilevered element comprises an an outwardly diverging frusto-conically shaped portion and an inwardly converging frusto-conically shaped portion. 8. The syringe assembly of claim 1, wherein said spring includes an air space between said distal stopper portion and said proximal stopper portion. 9. The syringe assembly of claim 1, wherein said discontinuity on said plunger comprises a radial projection on the plunger having a distal surface for contacting the barrel. 10. The syringe assembly of claim 1, wherein said discontinuity on said plunger is configured to engage a discontinuity on said barrel to retain the plunger and prevent further distal and proximal motion of said plunger with respect to said barrel during normal use of said syringe assembly. 11. The syringe assembly of claim 1, wherein said plunger has an aperture for allowing air trapped between said proximal stopper portion and said distal stopper portion to escape toward said open proximal end of said barrel. 12. The syringe assembly of claim 1, wherein said distal stopper portion is made of a material having a different coefficient of friction than the proximal stopper portion. 13. The syringe assembly of claim 1, wherein there is a less than air-tight fit between said plunger and said proximal stopper portion for allowing air trapped between said proximal stopper portion and said distal portion to escape toward said open proximal end of said barrel. 14. The syringe assembly of claim 1, wherein an outside diameter of said proximal stopper portion includes at least one discontinuity for allowing air trapped between said proximal stopper portion and said distal portion to escape toward said open proximal end of said barrel. 15. The syringe assembly of claim 1, wherein deflection of said spring occurs when said liquid pressure is about 5 mm Hg. (0.1 psi) or more. 16. The syringe assembly of claim 1, including flush solution in said chamber. 17. The syringe assembly of claim 16, further including a tip cap releasably connected to said tip of said syringe barrel for sealing said passageway. 18. The syringe assembly of claim 1, wherein said stopper is made of material selected from the list consisting of thermoplastic elastomers, natural rubber, synthetic rubber, thermoplastic materials and combinations thereof. 19. The syringe assembly of claim 1, further comprising a needle assembly including a cannula having a proximal end, a distal end and a lumen therethrough, and a hub having an open proximal end containing a cavity and a distal end attached to said proximal end of said cannula so that said lumen is in fluid communication with said cavity, said needle assembly being removably attached to said tip of said barrel through engagement of said tip to said cavity so that said lumen is in fluid communication with said chamber. 20. The syringe assembly of claim 1, wherein a single user can engage the discontinuity with the barrel to prevent distal motion of the plunger using one or two hands.

이 특허에 인용된 특허 (48)

Hatsuno Norio (Tokyo JA) Sekiguchi Tooru (Tokyo JA), Air-noncontact type blood sampling assembly.
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Kaufman Joseph (Emerson NJ) Prais Alois G. (Garfield NJ), Blood-gas syringe.
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Dzwonkiewicz Mark R., Bolus pump apparatus.
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Tennican Patrick O. (W. 105 8th Ave. ; Suite 350 Spokane WA 99204) Phipps L. Myles (2811 E. 11th Spokane WA 99202) Michaelsen Russell A. (P.O. Box 847 Spokane WA 99210), Central venous catheter access system.
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McWhorter Daniel M. (Arlington Heights IL) Patel Bhupendra C. (Elgin IL), Cholangiography device and method.
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Pagay Shrikant N. (Guilderland NY) Bachorik II Robert J. (Phoenixville PA) Liebert Richard T. (Milton NY), Combined syringe and plunger.
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Niedospial ; Jr. John J. ; Gabbard Mark E. ; Gabbard Timothy J., Combined universal connector and cap.
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Knors Christopher J. ; Monahan Lawrence A., Composition and article of improved compression set.
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Schumacher Herbert (Gorxheimertal DEX) Messner Norbert (Neustadt DEX) Osen Ernst (Birkenau DEX) Ecknig Dirk (Mannheim DEX), Disposable syringe.
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Lo Duca Carmelo (Milan ITX), Disposable syringe for once-only use.
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Vaillancourt Vincent L. (14 Bunyan Dr. Livingston NJ 07039), Dual chamber syringe for collecting samples and blood collecting system.
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Fuson Robert Lee (North Branch NJ), Dual-ended tubing cap.
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Butterfield Ida M. (Santa Maria CA), Hypodermic syringe cartridge with non-retractable drive piston.
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Greenwood Eugene C. (2956-B Pepper Tree La. Costa Mesa CA 92660) Holland John A. (1836 Port Abbey Pl. Newport Beach CA 92660), Hypodermic syringe for single use.
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Ohmori Hirofumi (Yokohama JPX), Injector.
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Karas Peter J. (Libertyville IL) Pitts Larry W. (Libertyville IL) Tanner ; II John C. (Lake Bluff IL), Luer adapter assembly for emergency syringe.
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Lynn Lawrence A. ; Harding Weston ; Purdy Edmund Robert, Luer receiver and method for fluid transfer.
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Talonn Daniel A. (University City MO) Crouse Roger L. (Ormond Beach FL) Weichselbaum Edwin G. (Eureka MO), Medical device with sterile fluid pathway.
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Hesse John E. (827 Stetson St. Moss Beach CA 94038), Non-reloadable syringe.
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Gibbs Andrew H. (3678 S. Walton Ave. Yuba City CA 95993), Non-reusable medical needle apparatus.
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Ellgass, Louis P., Non-reusable syringe.
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Landry ; Jr. Maurice J. (Nashua NH) Plouff Frederick L. (Wakefield MA), Non-reusable syringe.
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Molnar ; IV William F. (Houston TX), Non-reusable syringe.
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Rupp Roberta N. (126 Vinal St. Revere MA 02151), Non-reusable syringe.
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Verlier Jacques (16 ; rue Michel-Servet 1206 Geneve CHX), Non-reusable syringe.
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Legendre Robert (Piscataway NJ) Schlossberg Steven (East Windsor NJ), Pre-filled syringe for abusable drugs.
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Futagawa Hitoshi,JPX ; Murakami Mitsuo,JPX ; Aramata Masafumi,JPX ; Hirayama Toshikazu,JPX ; Arifuku Yohji,JPX, Prefilled syringe.
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Leibinsohn Saul (Rishon Lezion IL), Pressure-indicating syringe.
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Sweeney Niall (Rutherford NJ), Protective cap for hypodermic syringe.
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Tucker Robyn Laurie ; Gyure Sandor ; Odell Robert B., Protective sealing barrier for a syringe.
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Tucker Robyn Laurie ; Gyure Sandor ; Odell Robert B., Protective sealing barrier for a syringe.
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Pressly William B. S. (112 Caedmon Ct. Greer SC 29650) Vaughn ; Sr. Charles A. (3123 Queens Walk NE. Atlanta GA 30345), Safety syringe.
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Novacek Laurel A. (Vancouver CAX) Sharp Fraser R. (Vancouver CAX) McLean Donald A. (Vancouver CAX), Safety syringe needle device with interchangeable and retractable needle platform.
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Trenner Lewis E. (3046 S. Gaylord St. Denver CO 80210), Single use disposable hypodermic syringe.
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Greenwood Eugene C. (2956 Peppertree La. ; Apt. B Costa Mesa CA 92626), Single use hypodermic syringe.
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Shonfeld David (20 Breuer Ave. Great Neck NY 11023), Single use hypodermic syringe.
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Ranford Alan B. (St. Louis MO), Single use syringe.
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Kashmer James S., Single use syringe device.
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Mercado Alexander D. (Hicksville NY), Single use, destructible medical syringe.
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Young J. Winslow (803 E. Center St. Centerville UT 84014), Single-use fillable syringe.
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Kosinski Anthony J. (New Providence NJ), Single-use syringe.
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Grimard Jean Pierre,FRX ; Jansen Hubert,FRX, Stopper assembly having bypass features for use in a multi-chamber syringe barrel.
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Einav Yehuda,ILX ; Eyal Dror,ILX, Syringe.
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Robert B. Odell ; Lawrence J. Zach ; Alex S. Wallace, Syringe assembly.
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Howe Wesley J. (Franklin Lakes NJ), Syringe having graphics visualization features.
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DeMarco Anthony O. ; Goodsir Stephen W., Syringe needle guard.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Positive displacement flush syringe 원문보기

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Positive displacement flush syringe 원문보기

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이 특허에 인용된 특허 (48)

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