US3918456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter unit for cholangiography
Assignee: Kendall Co
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Filing: 1974-11-19
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Granted: 1975-11-11
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Expires: 1994-11-19
Abstract
Abstract A catheter unit for use in operative cholangiography comprising a transparent elongated conduit member having a rounded, open distal end for insertion into the biliary tree and an open proximal end, and a transparent adapter in leak-proof engagement with the conduit member adjacent its proximal end. The adapter includes a recess communicating with the proximal end whereby a source of fluid may be placed in the recess for the transmittal of fluid to the conduit member. The conduit member includes a smoothly rounded enlargement set back from the distal end a distance of between about 3/16 inch and about one inch whereby, when the enlargement is located in the cystic duct of a patient, the distal end will be located in the common duct.
Inventors
- 👤 Bhupendra C Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/0069; A61M25/0009; A61M25/0014; A61M5/00; A61M5/007; A61M2210/00; A61M2210/10; A61M2210/1042; A61M2210/1071; A61M2210/1075
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
A catheter unit for use in operative cholangiography comprising a transparent elongated conduit member having a rounded, open distal end for insertion into a body cavity and an open proximal end, and a transparent adapter in leak-proof engagement with said conduit member adjacent said proximal end, said adapter including a recess communicating with said proximal end whereby a source of fluid may be placed in said recess for the transmittal of fluid to said conduit member, said conduit member including a smoothly rounded enlargement thereof set back from said distal end, a distance of between about 3/16 inch and about one inch, whereby when said enlargement is located in the cystic duct of a patient said distal end will be located in the common duct of the patient.
Claim 2
Dependent Claim
128 words
A catheter unit for use in operative cholangiography comprising a transparent elongated conduit member having a rounded, open distal end for insertion into a body cavity and an open proximal end, and a transparent adapter in leak-proof engagement with said conduit member adjacent said proximal end, said adapter including a recess communicating with said proximal end whereby a source of fluid may be placed in said recess for the transmittal of fluid to said conduit member, said conduit member including a smoothly rounded enlargement thereof set back from said distal end, a distance of between about 3/16 inch and about one inch, whereby when said enlargement is located in the cystic duct of a patient said distal end will be located in the common duct of the patient.
Claim 3
Dependent Claim
22 words
A catheter unit as claimed in claim 1 wherein said enlargement comprises an integral bead around the exterior of said conduit member.
Claim 4
Dependent Claim
20 words
A catheter unit as claimed in claim 1 wherein said enlargement is located approximately 3/8 inch from said distal end.
Claim 5
Dependent Claim
31 words
A catheter unit as claimed in claim 1 wherein said conduit member includes a substantially rigid tip portion extending from said distal end to at least the location of said enlargement.
Claim 6
Dependent Claim
21 words
A cathether unit as claimed in claim 1 wherein said adapter is bonded to the exterior surface of said conduit member.
References Cited (Backward Citations)
US3358684A
Cited
US3695921A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |