Patent US5989239A successfully refreshed from Google Patents.
US5989239A
Expired / Lapsed
US
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Method and apparatus for percutaneously accessing an implanted port
Assignee: Vasca Inc
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Filing: 1997-07-18
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Granted: 1999-11-23
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Expires: 2017-07-18
Abstract
Abstract Methods and apparatus for percutaneously accessing an implanted port use a large bore coring needle. The coring needle is periodically introduced to an aperture on the implanted port so that the needle passes through the same tissue tract. It has been found that repeated passage of the needle through the same tissue tract reduces patient trauma, with minimized bleeding, reduction in sensitivity, in contrast to the use of non-coring needles.
Inventors
- 👤 C. David Finch
- 👤 Jeffrey H. Burbank
- 👤 James M. Brugger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:11
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3653; A61M1/3655; A61M39/00; A61M39/02; A61M39/0208; A61M5/00; A61M5/14; A61M5/158; A61M2005/1581; A61M2205/00; A61M2205/19; A61M2205/192; A61M2205/195; A61M25/00; A61M25/0021; A61M25/0023
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
213 words
A method for percutaneously accessing an implanted port in a patient, said method comprising: (a) providing a needle; (b) aligning the needle with an aperture on the port, wherein the port is subcutaneously connected to a blood vessel and contains a valve which isolates the aperture from the blood vessel; (c) percutaneously introducing the needle through tissue overlying the port and into the aperture, wherein the needle opens a blood flow path between the blood vessel and the port; (d) flowing blood between the blood vessel and a catheter attached to the needle through the port; and (e) withdrawing the needle from the aperture, wherein the valve closes to inhibit bleeding from the blood vessel to a tissue tract created by the needle; (f) providing another needle; (g) aligning the other needle with the aperture on the port; (h) percutaneously introducing the other needle through the same tissue tract into the aperture, wherein the needle opens a blood flow path between the blood vessel and the port; (i) flowing blood between the blood vessel and a catheter attached to the other needle through the port; and (j) withdrawing the other needle from the aperture, wherein the valve closes to inhibit bleeding from the blood vessel to a tissue tract created by the needle.
Claim 2
Independent Claim
213 words
A method for percutaneously accessing an implanted port in a patient, said method comprising: (a) providing a needle; (b) aligning the needle with an aperture on the port, wherein the port is subcutaneously connected to a blood vessel and contains a valve which isolates the aperture from the blood vessel; (c) percutaneously introducing the needle through tissue overlying the port and into the aperture, wherein the needle opens a blood flow path between the blood vessel and the port; (d) flowing blood between the blood vessel and a catheter attached to the needle through the port; and (e) withdrawing the needle from the aperture, wherein the valve closes to inhibit bleeding from the blood vessel to a tissue tract created by the needle; (f) providing another needle; (g) aligning the other needle with the aperture on the port; (h) percutaneously introducing the other needle through the same tissue tract into the aperture, wherein the needle opens a blood flow path between the blood vessel and the port; (i) flowing blood between the blood vessel and a catheter attached to the other needle through the port; and (j) withdrawing the other needle from the aperture, wherein the valve closes to inhibit bleeding from the blood vessel to a tissue tract created by the needle.
Claim 3
Dependent Claim
18 words
A method as in claim 1, wherein the needle has a bore size of at least 1.16 mm.
Claim 4
Dependent Claim
19 words
A method as in claim 1, wherein the other needle has a bore size of at least 1.16 mm.
Claim 5
Dependent Claim
23 words
A method as in claim 1, wherein the steps (g) through (j) are performed from two hours to four days after step (e).
Claim 6
Dependent Claim
14 words
A method as in claim 1, further comprising repeating steps (f) through (j) periodically.
Claim 7
Dependent Claim
21 words
A method as in claim 5, wherein the steps (f) through (j) are repeated every two hours to every four days.
Claim 8
Dependent Claim
27 words
A method as in claim 1, wherein the needles are introduced in a direction generally normal to the skin surface at the point through which it passes.
Claim 9
Dependent Claim
23 words
A kit comprising: a needle; instructions for use setting forth the method of claim 1; and a package containing the port and instructions.
Claim 10
Dependent Claim
16 words
A kit as in claim 8, further comprising a catheter connected or connectable to the needle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-22 | 2003-05-24 | 2003-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-22 | 2007-05-24 | 2007-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-22 | 2011-05-24 | 2011-11-23 | $7700.00 | Window Closed / Lapsed |