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US4256102A Expired / Lapsed US ⏱️ 0.0 years remaining

Subcutaneous dialysis system

Assignee: Individual
•
Filing: 1979-05-14
•
Granted: 1981-03-17
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Expires: 1999-05-14
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Abstract

Abstract A means and method of peritoneal dialysis in which a dialyzing tube is permanently embedded in a patient's body with a perforated end of the tube located within the peritoneal cavity and the other end secured subcutaneously at the fascia. Dialyzing is achieved by perforating the epidermis with a needle at the time of dialysis and thereafter introducing a dialyzing fluid through the needle, and if desired, through a catheter inserted through a needle into the tube in quantity and for a time period to permit dialyzing. The dialyzing fluid containing contaminants is then removed by siphon and/or gravity action through the needle. The sequence of introducing and removing fluid may be repeated and thereafter the needle withdrawn allowing the epidermis to heal and leaving no visible appearance of the dialyzing tube.

Inventors

  • 👤 Anthony P. Monaco

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 13:40
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0208; A61M1/00; A61M1/14; A61M1/28

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 93 words
A means for peritoneal dialysis comprising an elongated tube having an opening at one end and perforations formed along a section thereof, means for securing said tube with said perforations within the peritoneal cavity and with said one end subcutaneous but external of said peritoneal cavity, and means forming a perforable diaphragm over said open end, comprising a solid wall member having a frustoconic shape with the smaller diameter end of said frustoconic shape connected to said one end and the larger diameter end of said frustoconic shape supporting a needle perforable diaphragm.
Claim 2
Dependent Claim 93 words
A means for peritoneal dialysis comprising an elongated tube having an opening at one end and perforations formed along a section thereof, means for securing said tube with said perforations within the peritoneal cavity and with said one end subcutaneous but external of said peritoneal cavity, and means forming a perforable diaphragm over said open end, comprising a solid wall member having a frustoconic shape with the smaller diameter end of said frustoconic shape connected to said one end and the larger diameter end of said frustoconic shape supporting a needle perforable diaphragm.
Claim 3
Dependent Claim 17 words
A means as set forth in claim 1 wherein said perforable diaphram is formed of a mesh.
Claim 4
Dependent Claim 29 words
A means as set forth in claim 2 wherein said means for securing comprises a cuff extending radially from said tube and adapted to be sutured to the peritoneum.
Claim 5
Dependent Claim 17 words
A means as set forth in claim 3 wherein said perforations are formed radially about the tube.
Claim 6
Dependent Claim 21 words
A means as set forth in claim 4 wherein the height of said frustoconic shape is between 10 and 20 millimeters.

References Cited (Backward Citations)

US3520298A Cited
US3633585A Cited
US3640269A Cited
US3971376A Cited
US4160454A Cited
US4184497A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-03-16 1984-09-15 1985-03-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-03-16 1988-09-15 1989-03-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-03-16 1992-09-15 1993-03-17 $7700.00 Window Closed / Lapsed

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