Patent US5254084A successfully refreshed from Google Patents.
US5254084A
Expired / Lapsed
US
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Peritoneal catheter device for dialysis
Assignee: Individual
•
Filing: 1993-03-26
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Granted: 1993-10-19
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Expires: 2013-03-26
Abstract
Abstract A flexible peritoneal catheter device for dialysis comprising a ductwork of multiple tubes enclosed within a fluid permeable envelope structure, the tubes having holes therein for fluid flow and the envelope structure having slit shaped holes therein to allow fluid flow but discouraging tissue adherence.
Inventors
- 👤 Gregory L. Geary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:31
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/28; A61M1/285
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
53 words
A catheter device for dialysis comprising: ductwork comprising multiple tubes and a source conduit connected with the tubes; envelope structure forming a chamber encompassing the tubes; the envelope having an interior and an exterior; and the envelope being fluid permeable to allow fluid flow between the interior and the exterior of the envelope.
Claim 2
Dependent Claim
53 words
A catheter device for dialysis comprising: ductwork comprising multiple tubes and a source conduit connected with the tubes; envelope structure forming a chamber encompassing the tubes; the envelope having an interior and an exterior; and the envelope being fluid permeable to allow fluid flow between the interior and the exterior of the envelope.
Claim 3
Dependent Claim
11 words
The catheter of claim 1 wherein the envelope is generally fan-shaped.
Claim 4
Dependent Claim
25 words
The catheter of claim 1 wherein the envelope includes slit-shaped holes therein to allow fluid flow between the interior and the exterior of the envelope.
Claim 5
Dependent Claim
19 words
The catheter of claim 1 wherein the catheter is constructed for insertion into the peritoneal cavity by laparoscopy placement.
Claim 6
Dependent Claim
38 words
A dialysis catheter comprising: a generally flat, elongate cover forming a generally enclosed cavity; fluid distribution structure positioned within the cavity; and the cover including communication structure therein to allow fluid flow into and out of the cavity.
Claim 7
Dependent Claim
38 words
A dialysis catheter comprising: a generally flat, elongate cover forming a generally enclosed cavity; fluid distribution structure positioned within the cavity; and the cover including communication structure therein to allow fluid flow into and out of the cavity.
Claim 8
Dependent Claim
12 words
The catheter of claim 5 wherein the fluid distribution structure comprises tubes.
Claim 9
Dependent Claim
10 words
The catheter of claim 5 wherein the cover is fan-shaped.
Claim 10
Dependent Claim
11 words
The catheter of claim 5 wherein the communication structure comprises holes.
Claim 11
Dependent Claim
11 words
The catheter of claim 12 wherein the holes are slit shaped.
Claim 12
Dependent Claim
17 words
The catheter of claim 5 wherein the catheter is placed into the peritoneal cavity by laparoscopy placement.
Claim 13
Dependent Claim
46 words
A catheter device for dialysis comprising: an elongate, double-walled catheter assembly having fluid permeable walls wherein dialysis fluid flows through an inner wall and then through an outer wall when exiting the catheter, the outer wall having a generally flat shape when in an expanded form.
Claim 14
Dependent Claim
46 words
A catheter device for dialysis comprising: an elongate, double-walled catheter assembly having fluid permeable walls wherein dialysis fluid flows through an inner wall and then through an outer wall when exiting the catheter, the outer wall having a generally flat shape when in an expanded form.
Claim 15
Dependent Claim
12 words
The catheter of claim 11 wherein the inner wall is tube shaped.
Claim 16
Dependent Claim
26 words
The catheter of claim 12 wherein the outer wall has a fan-shaped exterior surface such that the catheter includes a narrow end and a wide end.
Claim 17
Dependent Claim
17 words
The catheter of claim 13 wherein the outer wall has slit shaped holes therein for fluid flow.
Claim 18
Dependent Claim
30 words
The catheter of claim 11 wherein the catheter is constructed of flexible resilient material such that the catheter can be compressed for insertion into the peritoneal cavity by laparoscopy placement.
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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) | 1996-10-18 | 1997-04-19 | 1997-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-18 | 2001-04-19 | 2001-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-18 | 2005-04-19 | 2005-10-19 | $7700.00 | Window Closed / Lapsed |