US3857785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial kidney apparatus
Assignee: Baxter International Inc
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Filing: 1972-10-18
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Granted: 1974-12-31
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Expires: 1992-10-18
Abstract
Abstract An artificial kidney apparatus providing a blood compartment which is entirely self-contained within its own structure. The apparatus further provides, in the self-contained assembly, structure to vary the positive pressure within a dialysate chamber and the pressure gradient across the diffusion membrane. Improved connector units provide uniform blood distribution into the diffusion membrane.
Inventors
- 👤 F Martinez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:56
CPC Classifications
B; B01; B01D; B01D61/00; B01D61/24; B01D61/28; A; A61; A61M; A61M1/00; A61M1/14; A61M1/16; F; F16; F16L; F16L5/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
176 words
A connector member for connecting tubing to a transversely larger, flexible, sheath-like conduit, said connector comprising a resilient body elongated and of generally oval shape in one direction and including a transverse bore, means for supporting and retaining said tubing within said bore, and means for confining in fluid-tight relationship said sheath-like conduit around the periphery of said body, said last named means comprising a relatively inflexible cup member having a bottom end defining an opening therein, said body being sealingly positioned within said cup member, said tubing being positioned within said bore and also positioned to pass through said opening, said sheath-like conduit being secured in fluid-tight relationship between said resilient body and said cup member, the surface of said body defining a plurality of grooves communicating with one end of said transverse bore and positioned to communicate with the interior of said conduit to facilitate the uniform distribution of fluid passing between said sheath-like conduit and said tubing, said grooves all extending in directions normal to the axes of said bore and sheath-like conduit.
Claim 2
Dependent Claim
176 words
A connector member for connecting tubing to a transversely larger, flexible, sheath-like conduit, said connector comprising a resilient body elongated and of generally oval shape in one direction and including a transverse bore, means for supporting and retaining said tubing within said bore, and means for confining in fluid-tight relationship said sheath-like conduit around the periphery of said body, said last named means comprising a relatively inflexible cup member having a bottom end defining an opening therein, said body being sealingly positioned within said cup member, said tubing being positioned within said bore and also positioned to pass through said opening, said sheath-like conduit being secured in fluid-tight relationship between said resilient body and said cup member, the surface of said body defining a plurality of grooves communicating with one end of said transverse bore and positioned to communicate with the interior of said conduit to facilitate the uniform distribution of fluid passing between said sheath-like conduit and said tubing, said grooves all extending in directions normal to the axes of said bore and sheath-like conduit.
Claim 3
Dependent Claim
71 words
The connector member of claim 1 wherein said means for confining said sheath-like conduit comprises a relatively infexible cup member having a bottom end defining an opening therein, said body being sealingly positioned within said cup member said tubing being positioned within said bore of the connector and also positioned to pass through said opening, said sheath-like conduit being secured in fluid-tight relationship between said resilient body and said cup member.
Claim 4
Dependent Claim
27 words
The connector member of claim 2 comprising at least one resilient substantially ring-like projection carried by said body to provide a fluid seal with said cup member.
Claim 5
Dependent Claim
26 words
The connector member of claim 3 wherein said body is made of an elastomer and the ring-like sealing projection is an integral part of said body.
References Cited (Backward Citations)
US3208757A
Cited
US3508662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |