[특허]Catheter having a low drag septum

[미국특허] Catheter having a low drag septum 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-005/178 A61M-005/32 A61M-005/00 A61M-005/31
출원번호	US-0253682 (2002-09-24)
발명자 / 주소	Meng, Clement Wan Chye Jin, Cheng Kiat Miner, Tom M.
출원인 / 주소	Becton Dickinson and Company
대리인 / 주소	Murtha, James J.
인용정보	피인용 횟수 : 76 인용 특허 : 17

초록 ▼

The catheter and introducer needle assembly of this invention includes a catheter adapter at its proximal end having a hollow septum disposed therein. The septum preferably is hollow to minimize drag as the introducer needle is removed therefrom. If desired a gel or lubricious material may be dispos

대표청구항 ▼

1. A catheter and introducer needle assembly, comprising: a catheter having a proximal end and a distal end; a catheter adapter in fluid communication with the catheter and having a proximal end and a distal end connected to the proximal end of the catheter, the catheter adapter including a side port in fluid communication with the catheter adapter; an introducer needle disposed, at least in part, within the catheter, the introducer needle having a proximal end and a distal end with an opening, wherein the introducer needle defines a notch therein adjacent to the distal end, and wherein a notch distance is defined as the distance between a proximal end of the notch and a distal end of the opening in the distal end of the introducer needle; a needle hub having a proximal end and a distal end connected to the proximal end of needle; and an elastomeric septum having a distal portion and a proximal portion, the elastomeric septum being disposed in the catheter adapter and located proximal of the side port wherein the septum has a length greater than the notch distance. 2. The catheter and introducer needle assembly of claim 1 wherein the distal portion is radially compressed by the catheter adapter. 3. The catheter and introducer needle assembly of claim 2 wherein the catheter adapter is tapered at its proximal end. 4. The catheter and introducer needle assembly of claim 3 wherein the catheter adapter further comprises a housing extending along at least the distal portion of the septum. 5. The catheter and introducer needle assembly of claim 1 wherein the catheter adapter comprises a housing extending at least along the distal portion of the septum. 6. The catheter and introducer needle assembly of claim 1 wherein the proximal portion of the septum and the distal portion of the septum are two separate pieces. 7. The catheter and introducer assembly of claim 6 wherein a cavity is located in the septum, extending from the distal portion to the proximal portion. 8. The catheter and introducer assembly of claim 6 wherein the cavity is tapered radially outward from a distal end of the distal portion toward a proximal end of the distal portion. 9. The catheter and introducer assembly of claim 6 wherein the cavity is tapered radially outward from a proximal end of the proximal portion toward a distal end of the proximal portion. 10. The catheter and introducer assembly of claim 9 wherein the cavity is tapered radially outward from a distal end of the distal portion toward a proximal end of the distal portion. 11. A septum assembly, comprising: a needle having a cross section; a septum holder having a fixed shape; and a septum disposed in the septum holding and including a septum proximal portion and a septum distal portion and defining a cavity between the septum proximal portion and the septum distal portion; wherein the septum is disposed about the needle, and wherein the cavity is sized to be larger than the cross section of the needle such that the septum contacts the needle only at the proximal portion of the septum and at the distal portion of the septum; wherein the needle has a proximal end and a distal end with an opening, wherein the introducer needle defines a notch therein adjacent to the distal end, and wherein a notch distance is defined as the distance between a proximal end of the notch and a distal end of the opening in the distal end of the introducer needle and wherein the septum has a length greater than the notch distance.

이 특허에 인용된 특허 (17) 인용/피인용 타임라인 분석

Howell Glade H., Blood seal having a spring-biased septum.
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Dales Lawrence (1556 Old Orchard St. West Harrison NY 10604) Dales Elsa A. (1556 Old Orchard St. West Harrison NY 10604), Bloodless insertion catheter assembly.
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Meng, Clement Wan Chye; Jin, Cheng Kiat; Miner, Tom M., Catheter having a low drag septum.
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Russell Michael A. (Cohasset MA), Catheter introducer valve.
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Brimhall Greg L., Compact needle point shield.
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Vaillancourt Vincent L. (14 Bunyan Dr. Livingston NJ), Composite seal structure and a coupling arrangement for a cannula.
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Brimhall Greg L., Control forward/flashback forward one hand introducer needle and catheter assembly.
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Brimhall Greg L. (West Jordan UT), Control forward/flashback forward one hand introducer needle and catheter assembly.
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Prosl Frank R., Hemodialysis access apparatus.
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Metals Jol (La Cottencire 86420 Berthegon FRX), Improvements to implantable vascular access devices.
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Feng Jiyu (201 S. 3rd Ave. ; #4 Arcadia CA 91006) Feng Esther C. (201 S. 3rd Ave. ; #4 Arcadia CA 91006), Injection port connector with rotatable locking lug.
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Brimhall Greg L. ; Steinman Christopher P. ; Thoresen Stephen L., Multiple cross section needle and elastic plug assembly for a medical device.
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Yamamoto Ronald K. (Atherton CA) Conston Stanley R. (San Carlos CA) Bootman Matthew (Redwood City CA), Percutaneous access device.
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Cover Walter E. (Mission Viejo CA) Davidner Alan A. (Claremont CA), Retractable needle cannula insertion set with refinements to better control leakage, retraction speed and reuse.
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Newgard Kent W. (1931 Beverly Glen Dr. Santa Ana CA 92705) Gordon Mark G. (13591 Malena Dr. Tustin CA 92680), Self-occluding intravascular cannula assembly.
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Steigerwald Carl J. (Fox Lake IL), Valve assembly.
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Steigerwald Carl J. (Fox Lake IL), Valve assembly.
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White, Steven B.; Harris, Adrienne Rose; Kemmerer, Elyse; Farrell, Nathan; Duis, Ronald Dean; Brown, Henry J. H., Integrated vascular delivery system.
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[미국특허] Catheter having a low drag septum 원문보기

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[미국특허] Catheter having a low drag septum 원문보기

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