US5167645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cholangiography catheter inserter
Assignee: Individual
•
Filing: 1991-07-24
•
Granted: 1992-12-01
•
Expires: 2011-07-24
Abstract
Abstract The disclosure is directed to a cholangiography catheter insertion tool, or introducer. In the preferred embodiment, the tool comprises a hollow cylinder with an ovate directional aperture lying in the plane of a tangent to the cylinder and parallel to the longitudinal axis of the cylinder. Also disclosed is a method of using the tool.
Inventors
- 👤 R. Robert Castillo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:53
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61B; A61B17/00; A61B17/34; A61B17/3415
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
115 words
A tool for inserting a catheter into a duct comprising: elongated substantially straight tubular means having no more than a single lumen, a longitudinal axis and telescopically positionable within trocar means; said elongated tubular means further comprising a curved distal end and ovate aperture means disposed at said distal end; said curved distal end and said aperture means comprising discrete tip means extending substantially beyond a plane tangent to an outside surface of said elongated tubular means, said plane being parallel to said longitudinal axis; means for receiving a catheter extending through said trocar means, said elongated tubular means, and said aperture means; and wherein said tip means directs said catheter into an anatomical lumen.
Claim 2
Dependent Claim
115 words
A tool for inserting a catheter into a duct comprising: elongated substantially straight tubular means having no more than a single lumen, a longitudinal axis and telescopically positionable within trocar means; said elongated tubular means further comprising a curved distal end and ovate aperture means disposed at said distal end; said curved distal end and said aperture means comprising discrete tip means extending substantially beyond a plane tangent to an outside surface of said elongated tubular means, said plane being parallel to said longitudinal axis; means for receiving a catheter extending through said trocar means, said elongated tubular means, and said aperture means; and wherein said tip means directs said catheter into an anatomical lumen.
Claim 3
Dependent Claim
34 words
The invention of claim 1 wherein the plane of ovate aperture means extends at a range of angles 45° on either side relative to the tangent to the cylinder of said elongated tubular means.
Claim 4
Dependent Claim
14 words
The invention of claim 1 wherein said elongated tubular means comprises an aluminum material.
Claim 5
Dependent Claim
15 words
The invention of claim 1 wherein said elongated tubular means comprises a stainless steel material.
Claim 6
Dependent Claim
24 words
The invention of claim 1 wherein said elongated tubular means comprises a material selected from the group consisting of thermoplastic plastics and thermosetting plastics.
Claim 7
Dependent Claim
14 words
The invention of claim 5 wherein said elongated tubular means comprises a polypropylene material.
Claim 8
Dependent Claim
23 words
The invention of claim 1 wherein said elongated tubular means comprises a length in the range of between approximately 25 and 35 cm.
Claim 9
Dependent Claim
13 words
The invention of claim 1 wherein said distal end comprises a lanceolate portion.
Claim 10
Dependent Claim
26 words
The invention of claim 1 wherein said elongated tubular means comprises a removably attachable tip positionable on a rod which is telescopically positionable within the trocar.
Claim 11
Dependent Claim
21 words
The invention of claim 1 wherein said curved distal end comprises a notched flexible tube, curved and joined at said notches.
Claim 12
Dependent Claim
19 words
The invention of claim 1 wherein said curved distal end comprises at least two joined units forming said curve.
Claim 13
Dependent Claim
61 words
A cholangiography catheter inserter comprising: hollow cylinder means having no more than a single lumen, a longitudinal axis and comprising a proximal and distal end; said distal end comprising a curve and an ovate aperture; and said distal end extending beyond a plane tangent to an outside surface of said hollow cylinder means, said plane being parallel to said longitudinal axis.
Claim 14
Dependent Claim
61 words
A cholangiography catheter inserter comprising: hollow cylinder means having no more than a single lumen, a longitudinal axis and comprising a proximal and distal end; said distal end comprising a curve and an ovate aperture; and said distal end extending beyond a plane tangent to an outside surface of said hollow cylinder means, said plane being parallel to said longitudinal axis.
Claim 15
Dependent Claim
14 words
The invention of claim 12 wherein said hollow cylinder means comprises an aluminum material.
Claim 16
Dependent Claim
15 words
The invention of claim 12 wherein said hollow cylinder means comprises a stainless steel material.
Claim 17
Dependent Claim
24 words
The invention of claim 12 wherein said hollow cylinder means comprises a material selected from the group consisting of thermoplastic plastics and thermosetting plastics.
Claim 18
Dependent Claim
14 words
The invention of claim 12 wherein said hollow cylinder means comprises a polypropylene material.
Claim 19
Dependent Claim
23 words
The invention of claim 12 wherein said hollow cylinder means comprises a length in the range of between approximately 25 and 35 cm.
Claim 20
Dependent Claim
13 words
The invention of claim 12 wherein said distal end comprises a sharpened portion.
Claim 21
Dependent Claim
13 words
The invention of claim 12 wherein said distal end comprises a lanceolate portion.
Claim 22
Dependent Claim
29 words
The invention of claim 12 wherein the plane of the ovate aperture extends at a range of angle 45° on either side relation to the tangent to said cylinder.
Claim 23
Dependent Claim
20 words
The invention of claim 12 wherein said distal end comprises a notched flexible cylinder, curved and joined at said notches.
Claim 24
Dependent Claim
18 words
The invention of claim 12 wherein said distal end comprises at least two joined units forming said curve.
Claim 25
Independent Claim
64 words
A method of performing cholangiography comprising the steps of: a) making a transverse incision in a cystic duct; b) placing a single lumen cholangiography catheter inserter with a discrete extended tip into or adjacent to the incision; c) inserting a cholangiography catheter through the inserter; and d) directing the catheter into the cystic duct by means of the discrete extended tip on the inserter.
Claim 26
Independent Claim
64 words
A method of performing cholangiography comprising the steps of: a) making a transverse incision in a cystic duct; b) placing a single lumen cholangiography catheter inserter with a discrete extended tip into or adjacent to the incision; c) inserting a cholangiography catheter through the inserter; and d) directing the catheter into the cystic duct by means of the discrete extended tip on the inserter.
Claim 27
Dependent Claim
33 words
The method of claim 23 wherein the step of placing the cholangiography catheter inserter comprises the step of placing a cholangiography catheter inserter with an ovate structure into or adjacent to the incision.
Claim 28
Dependent Claim
25 words
The method of claim 23 wherein the step of inserting the cholangiography catheter comprises the step of inserting a lanceolate portion of the cholangiography catheter.
Claim 29
Dependent Claim
25 words
The method of claim 23 wherein the step of inserting the cholangiography catheter comprises the step of inserting a sharpened portion of the cholangiography catheter.
References Cited (Backward Citations)
DE1810804A1
Cited
DE2305796A1
Cited
SU976993A1
Cited
US4650472A
Cited
US4850960A
Cited
US4808157A
Cited
US4958901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-01 | 1996-06-01 | 1996-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-01 | 2000-06-01 | 2000-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-01 | 2004-06-01 | 2004-12-01 | $7700.00 | Window Closed / Lapsed |