US5147335A
Expired / Lapsed
US
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Transurethrovesical biopsy, amniocentesis and biological sampling guide
Assignee: The University of Texas System
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Filing: 1989-08-24
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Granted: 1992-09-15
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Expires: 2009-08-24
Abstract
Abstract A metehod and device for transurethrovesical biopsies, amniocenteses and other biological sampling procedures utilizing a double lumen catheter is achieved by the present invention. The catheter includes a rigid lumen to guide a needle and a second lumen able to pass fluid. In transurethrovesical sampling procedures, the catheter is positioned across the bladder with one end of the catheter against the bladder wall which adjoins the uterus wall. Fluids pass through the second lumen to fill the bladder and increase sonographic visibility allowing the user better visibility for precise placement of the catheter. Preferably, an amniocentesis or biopsy needle is passed through the first rigid lumen, through the bladder wall, through the uterus wall and into the amniotic sac to allow withdrawal of amniotic fluid or other biological sample. The needle may then be withdrawn through the rigid lumen and the catheter removed. In other biosampling procedures, the catheter is positioned across a body cavity to permit filling the cavity with fluid, sampling the target and sonographically viewing the biosampling operation.
Inventors
- 👤 Jeffrey Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:00
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/42; A61B17/4208; A61B10/00; A61B10/0045; A61B10/0048; A61M; A61M25/00; A61M25/0021; A61M25/0023; A61M25/0026; A61M2025/0037
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
102 words
A multi-lumen catheter comprising: an amniocentesis needle; a first rigid lumen having a first end and a second end, said first end having a first orifice for receiving said needle and said second end having a second orifice opposite said first orifice to enable said needle to exit the second end of said first lumen; and a second lumen having a fluid inlet and a fluid outlet; said first lumen being attached to said second lumen in parallel relationship, said first end being in proximal relation to said fluid inlet, and said second end being in proximal relation to said fluid outlet.
Claim 2
Dependent Claim
102 words
A multi-lumen catheter comprising: an amniocentesis needle; a first rigid lumen having a first end and a second end, said first end having a first orifice for receiving said needle and said second end having a second orifice opposite said first orifice to enable said needle to exit the second end of said first lumen; and a second lumen having a fluid inlet and a fluid outlet; said first lumen being attached to said second lumen in parallel relationship, said first end being in proximal relation to said fluid inlet, and said second end being in proximal relation to said fluid outlet.
Claim 3
Dependent Claim
19 words
The multi-lumen catheter of claim 1 wherein said needle is of length greater than that of said first lumen.
Claim 4
Dependent Claim
102 words
A multi-lumen catheter comprising: a biopsy needle; a first rigid lumen having a first end and a second end, said first end having a first orifice for receiving said needle and said second end having a second orifice opposite said first orifice to enable said needle to exit the second end of said first lumen; and a second lumen having a fluid inlet and a fluid outlet; said first lumen being attached to said second lumen in parallel relationship, said first end being in proximal relation to said fluid inlet, and said second end being in proximal relation to said fluid outlet.
Claim 5
Dependent Claim
102 words
A multi-lumen catheter comprising: a biopsy needle; a first rigid lumen having a first end and a second end, said first end having a first orifice for receiving said needle and said second end having a second orifice opposite said first orifice to enable said needle to exit the second end of said first lumen; and a second lumen having a fluid inlet and a fluid outlet; said first lumen being attached to said second lumen in parallel relationship, said first end being in proximal relation to said fluid inlet, and said second end being in proximal relation to said fluid outlet.
Claim 6
Independent Claim
174 words
A method of obtaining amniotic fluid comprising the steps of: providing a multi-lumen catheter including a first rigid lumen having a first end suitable for receiving an amniocentesis needle and having a second end allowing such a needle to exit said first lumen, a second lumen having a fluid inlet and a fluid outlet, said second lumen being attached to said first lumen in parallel relationship having said first end in proximal relation to said fluid inlet and having said second end in proximal relation to said fluid outlet; positioning an imaging device to allow imaging of a bladder, an associated uterus and an associated amniotic sac; inserting said multi-lumen catheter in said bladder; passing fluid into said fluid inlet and allowing fluid to exit through said fluid outlet and fill said bladder; positioning said second end against a wall of said bladder adjoining said uterus and said amniotic sac; inserting an amniocentesis needle in said first end, through said first lumen and into said amniotic sac; and aspirating amniotic fluid through said needle.
Claim 7
Independent Claim
174 words
A method of obtaining amniotic fluid comprising the steps of: providing a multi-lumen catheter including a first rigid lumen having a first end suitable for receiving an amniocentesis needle and having a second end allowing such a needle to exit said first lumen, a second lumen having a fluid inlet and a fluid outlet, said second lumen being attached to said first lumen in parallel relationship having said first end in proximal relation to said fluid inlet and having said second end in proximal relation to said fluid outlet; positioning an imaging device to allow imaging of a bladder, an associated uterus and an associated amniotic sac; inserting said multi-lumen catheter in said bladder; passing fluid into said fluid inlet and allowing fluid to exit through said fluid outlet and fill said bladder; positioning said second end against a wall of said bladder adjoining said uterus and said amniotic sac; inserting an amniocentesis needle in said first end, through said first lumen and into said amniotic sac; and aspirating amniotic fluid through said needle.
Claim 8
Dependent Claim
13 words
The method of claim 4 wherein said imaging device comprises a sonographic transducer.
Claim 9
Independent Claim
167 words
A method of performing a transurethrovesical biopsy comprising the steps of: providing a multi-lumen catheter including a first rigid lumen having a first end suitable for receiving a biopsy needle and having a second end allowing such a needle to exit said first lumen, a second lumen having a fluid inlet and a fluid outlet, said second lumen being attached to said first lumen in parallel relationship having said first end in proximal relation to said fluid inlet and having said second end in proximal relation to said fluid outlet; positioning an imaging device to allow imaging of a bladder and an associated target; inserting said multi-lumen catheter in said bladder; passing fluid into said fluid inlet and allowing fluid to exit through said fluid outlet and fill said bladder; positioning said second end against a wall of said bladder proximate said target; inserting a biopsy needle in said first end, through said first lumen and into said target; and aspirating a biological sample through said needle.
Claim 10
Independent Claim
167 words
A method of performing a transurethrovesical biopsy comprising the steps of: providing a multi-lumen catheter including a first rigid lumen having a first end suitable for receiving a biopsy needle and having a second end allowing such a needle to exit said first lumen, a second lumen having a fluid inlet and a fluid outlet, said second lumen being attached to said first lumen in parallel relationship having said first end in proximal relation to said fluid inlet and having said second end in proximal relation to said fluid outlet; positioning an imaging device to allow imaging of a bladder and an associated target; inserting said multi-lumen catheter in said bladder; passing fluid into said fluid inlet and allowing fluid to exit through said fluid outlet and fill said bladder; positioning said second end against a wall of said bladder proximate said target; inserting a biopsy needle in said first end, through said first lumen and into said target; and aspirating a biological sample through said needle.
Claim 11
Independent Claim
53 words
A method of obtaining an amniotic fluid sample through a urethra and a bladder comprising the steps of: filling said bladder with a fluid; passing a needle through said urethra and said bladder and obtaining said amniotic fluid sample while said bladder is so filled; and sonographically viewing said amniotic fluid sampling operation.
Claim 12
Independent Claim
53 words
A method of obtaining an amniotic fluid sample through a urethra and a bladder comprising the steps of: filling said bladder with a fluid; passing a needle through said urethra and said bladder and obtaining said amniotic fluid sample while said bladder is so filled; and sonographically viewing said amniotic fluid sampling operation.
Claim 13
Independent Claim
54 words
A method of obtaining a chorionic villus sample through a urethra and a bladder comprising the steps of: filling said bladder with a fluid; passing a sampling means through said urethra and said bladder and obtaining said chorionic villus sampling while said bladder is so filled; and sonographically viewing said chorionic villus sampling operation.
Claim 14
Independent Claim
54 words
A method of obtaining a chorionic villus sample through a urethra and a bladder comprising the steps of: filling said bladder with a fluid; passing a sampling means through said urethra and said bladder and obtaining said chorionic villus sampling while said bladder is so filled; and sonographically viewing said chorionic villus sampling operation.
Claim 15
Independent Claim
165 words
A method of obtaining a biological sample comprising the steps of: providing a multi-lumen catheter including a first rigid lumen having a first end suitable for receiving a needle and having a second end allowing such a needle to exit said first lumen, a second lumen having a fluid inlet and a fluid outlet, said second lumen being attached to said first lumen in parallel relationship having said first end in proximal relation to said fluid inlet and having said second end in proximal relation to said fluid outlet; positioning an imaging device to allow imaging of a body cavity and an associated target; inserting said multi-lumen catheter in said body cavity; passing fluid into said fluid inlet and allowing fluid to exit through said fluid outlet and fill said cavity; positioning said second end within said cavity and proximate said target; inserting a needle in said first end, through said first lumen and into said target; and aspirating a biological sample through said needle.
Claim 16
Independent Claim
165 words
A method of obtaining a biological sample comprising the steps of: providing a multi-lumen catheter including a first rigid lumen having a first end suitable for receiving a needle and having a second end allowing such a needle to exit said first lumen, a second lumen having a fluid inlet and a fluid outlet, said second lumen being attached to said first lumen in parallel relationship having said first end in proximal relation to said fluid inlet and having said second end in proximal relation to said fluid outlet; positioning an imaging device to allow imaging of a body cavity and an associated target; inserting said multi-lumen catheter in said body cavity; passing fluid into said fluid inlet and allowing fluid to exit through said fluid outlet and fill said cavity; positioning said second end within said cavity and proximate said target; inserting a needle in said first end, through said first lumen and into said target; and aspirating a biological sample through said needle.
Claim 17
Dependent Claim
13 words
The method of claim 24 wherein said imaging device comprises a sonographic transducer.
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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) | 1995-09-15 | 1996-03-16 | 1996-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-15 | 2000-03-16 | 2000-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-15 | 2004-03-16 | 2004-09-15 | $7700.00 | Window Closed / Lapsed |