EP0345051A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Balloon dilation catheter
Assignee: Boston Scientific Corp
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Filing: 1989-06-01
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Granted: —
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Expires: 2009-06-01
Abstract
Abstract Disclosed is an apparatus and method for the treatment of the symptoms of obstructive prostatism. The apparatus comprises an expandable dilatation catheter and an axially elongate sheath, adapted for transurethral insertion via the external opening of the urethra. The sheath is ellipsoid in cross-section, and provides an initial path through which the catheter and a standard cystoscope lens is guided. Disposed near the proximal end of the expandable dilatation portion of the catheter is a plurality of irrigation ports. A saline solution travels through an irrigation conduit and is secreted through the irrigation ports so as to flush away blood, etc., away from the lens of a cystoscope and provide the urologist with an unobstructed view of the dilatation catheter and external urethral sphincter muscle. Once the catheter has been properly positioned with respect to both the bladder neck and the sphincter, the dilatation balloon may be inflated to force open the affected prostatic urethra and eliminate the obstruction.
Inventors
- 👤 Robert F. Rosenbluth
- 👤 Jay Alan Lenker
- 👤 George Robert Greene
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 06:32
CPC Classifications
A; A61; A61M; A61M29/00; A61M29/02; A61M25/00; A61M2025/0004; A61M25/10; A61M2025/1043; A61M2025/1072
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
55 words
An apparatus for locating the position of a dilating means within a body lumen with respect to an anatomical landmark, comprising: an elongate catheter, having a means for dilating the body lumen carried thereon; and visualizing means associated with the catheter for visualizing the location of the dilating means with respect to the anatomical landmark.
Claim 2
Independent Claim
55 words
An apparatus for locating the position of a dilating means within a body lumen with respect to an anatomical landmark, comprising: an elongate catheter, having a means for dilating the body lumen carried thereon; and visualizing means associated with the catheter for visualizing the location of the dilating means with respect to the anatomical landmark.
Claim 3
Dependent Claim
25 words
An apparatus as in Claim 1, wherein said visualizing means comprises an optical transmission means disposed substantially in parallel with a portion of the catheter.
Claim 4
Dependent Claim
81 words
An intraluminal dilation appratus for relieving flow obstructions within a body lumen, comprising: an axially elongate introduction sheath, adapted for insertion into a body lumen; an axially elongate dilation catheter, having a dilation means secured thereto, said catheter extending through and axially movable within said sheath, to permit positioning of said dilation means within the obstructed body lumen; and non-radiological locating means extending substantially in parallel with the sheath for ascertaining the position of said dilating means with said body lumen.
Claim 5
Dependent Claim
81 words
An intraluminal dilation appratus for relieving flow obstructions within a body lumen, comprising: an axially elongate introduction sheath, adapted for insertion into a body lumen; an axially elongate dilation catheter, having a dilation means secured thereto, said catheter extending through and axially movable within said sheath, to permit positioning of said dilation means within the obstructed body lumen; and non-radiological locating means extending substantially in parallel with the sheath for ascertaining the position of said dilating means with said body lumen.
Claim 6
Dependent Claim
22 words
An intraluminal dilation apparatus as in Claim 3, wherein the non-radiological locating means comprises a means for visually locating said anatomical landmark.
Claim 7
Dependent Claim
19 words
An intraluminal dilation apparatus as in Claim 3, wherein said dilation means comprises at least one inflatable dilation balloon.
Claim 8
Dependent Claim
126 words
An intraurethral dilation apparatus for relieving the symptoms of obstructive prostatism, said device comprising: an axially elongate introduction sheath, adapted for insertion into the urethra to receive and guide both a catheter shaft and a cystoscopic lens therethrough, so as to minimize trauma to the urethral lining during the insertion of said catheter and said lens; a tubular, axially elongate, catheter shaft for insertion through said sheath, having a distal end to facilitate manipulation of said device within the urethra; an expansible locating balloon, disposed near the distal tip of said catheter shaft and bonded thereto; and a dilation balloon, on said catheter shaft situated proximally of said expansible locating balloon, said dilation balloon outwardly radially expandable to a preselected configuration in response to inflation thereof.
Claim 9
Dependent Claim
126 words
An intraurethral dilation apparatus for relieving the symptoms of obstructive prostatism, said device comprising: an axially elongate introduction sheath, adapted for insertion into the urethra to receive and guide both a catheter shaft and a cystoscopic lens therethrough, so as to minimize trauma to the urethral lining during the insertion of said catheter and said lens; a tubular, axially elongate, catheter shaft for insertion through said sheath, having a distal end to facilitate manipulation of said device within the urethra; an expansible locating balloon, disposed near the distal tip of said catheter shaft and bonded thereto; and a dilation balloon, on said catheter shaft situated proximally of said expansible locating balloon, said dilation balloon outwardly radially expandable to a preselected configuration in response to inflation thereof.
Claim 10
Dependent Claim
97 words
An apparatus as defined by Claim 6, further comprising: a first inflation lumen in said catheter shaft for transmitting pressurized fluid into and out of said locating balloon, for inflation and deflation thereof; a second inflation lumen in said catheter shaft for transmitting pressurized fluid into and out of said dilation balloon, for inflation and deflation thereof; and an irrigation conduit in said apparatus for providing a path through which a supply of flushing fluid may flow so as to flush blood away from the distal end of said cystoscope lens and permit an unobstructed view therethrough.
Claim 11
Dependent Claim
128 words
An intraluminal introduction sheath for insertion into a body lumen, adapted to removably receive and retain an endoscope and catheter, said sheath comprising: an axially elongate hollow shaft, providing a path through which said catheter and said endoscope is guided for initial insertion into a body lumen; a cylindrical housing, mounted to and encircling one end of said shaft; a rubberized septum, detachably attached to said housing for providing a seal for said shaft; a pair of boot sleeves, extending outwardly of said housing, said boot sleeves adapted to grip said catheter and said endoscope; and a flexible tip abutted against the other end of said shaft and bonded thereto, said flexible tip adapted to coerce said catheter back into said sheath prior to removal from said lumen.
Claim 12
Dependent Claim
128 words
An intraluminal introduction sheath for insertion into a body lumen, adapted to removably receive and retain an endoscope and catheter, said sheath comprising: an axially elongate hollow shaft, providing a path through which said catheter and said endoscope is guided for initial insertion into a body lumen; a cylindrical housing, mounted to and encircling one end of said shaft; a rubberized septum, detachably attached to said housing for providing a seal for said shaft; a pair of boot sleeves, extending outwardly of said housing, said boot sleeves adapted to grip said catheter and said endoscope; and a flexible tip abutted against the other end of said shaft and bonded thereto, said flexible tip adapted to coerce said catheter back into said sheath prior to removal from said lumen.
Claim 13
Dependent Claim
65 words
An intraluminal visualization device, comprising: an axially elongate hollow sheath; an endoscopic lens, adapted for insertion into said sheath, providing a means for visualizing various structures within the body; and an irrigation system for flushing blood away from said lens, said irrigation system including a tubular member for transporting irrigation fluid therethrough, said tubular member adapted for insertion into said sheath, parallel to said endoscope.
Claim 14
Dependent Claim
65 words
An intraluminal visualization device, comprising: an axially elongate hollow sheath; an endoscopic lens, adapted for insertion into said sheath, providing a means for visualizing various structures within the body; and an irrigation system for flushing blood away from said lens, said irrigation system including a tubular member for transporting irrigation fluid therethrough, said tubular member adapted for insertion into said sheath, parallel to said endoscope.
Claim 15
Dependent Claim
149 words
A dilation catheter, adapted for transluminal insertion comprising: an axially elongate catheter shaft; a dilation balloon, secured proximate to the distal end of said shaft, at shoulder portions, said balloon having a squared configuration with rounded corners at one or both ends; and an inflation conduit extending longitudinally through said shaft, said conduit adapted to transmit pressurized fluid into and out of said dilation balloon, for selective inflation and deflation thereof. 11. An intraluminal introduction sheath for insertion into a body lumen, adapted to receive and removably retain an endoscope and catheter, said sheath comprising: an axially elongate hollow shaft, providing a path through which said catheter and said endoscope is guided for initial insertion into a body lumen; and a flexible tip abutted against one end of said shaft and bonded thereto, said flexible tip coercing said catheter back into said sheath prior to removal from said lumen.
Claim 16
Dependent Claim
149 words
A dilation catheter, adapted for transluminal insertion comprising: an axially elongate catheter shaft; a dilation balloon, secured proximate to the distal end of said shaft, at shoulder portions, said balloon having a squared configuration with rounded corners at one or both ends; and an inflation conduit extending longitudinally through said shaft, said conduit adapted to transmit pressurized fluid into and out of said dilation balloon, for selective inflation and deflation thereof. 11. An intraluminal introduction sheath for insertion into a body lumen, adapted to receive and removably retain an endoscope and catheter, said sheath comprising: an axially elongate hollow shaft, providing a path through which said catheter and said endoscope is guided for initial insertion into a body lumen; and a flexible tip abutted against one end of said shaft and bonded thereto, said flexible tip coercing said catheter back into said sheath prior to removal from said lumen.
Claim 17
Dependent Claim
67 words
A dilation catheter assembly, adapted for insertion into a body lumen, comprising: an axially elongate catheter shaft; and a dilation balloon secured to said shaft at first and second shoulder portions, said balloon having first and second end portions which are preformed such that when said balloon is inflated, at least one of said end portions is steeply inclined from the external surface of said catheter shaft.
Claim 18
Dependent Claim
67 words
A dilation catheter assembly, adapted for insertion into a body lumen, comprising: an axially elongate catheter shaft; and a dilation balloon secured to said shaft at first and second shoulder portions, said balloon having first and second end portions which are preformed such that when said balloon is inflated, at least one of said end portions is steeply inclined from the external surface of said catheter shaft.
References Cited (Backward Citations)
No citation records indexed.
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