Patent EP0442480A1 successfully refreshed from Google Patents.
EP0442480A1
Expired / Lapsed
EP
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Balloon catheter for dilating a prostatic urethra
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1991-02-13
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Granted: —
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Expires: 2011-02-13
Abstract
Abstract A catheter system for dilating the prostatic urethra of a male patient. The catheter has an elongated tubular catheter body (11) with an inner lumen extending therein, an inflatable relatively inelastic balloon (13) on the distal extremity of the catheter body, a core member (23) extending through the balloon interior and at least to and preferably out the distal end of the catheter body where a flexible body such as a helical coil (16) is disposed about and secured thereto. The catheter body proximal to the balloon has a diameter which is sufficiently small to allow the catheter shaft to be slidably disposed within the working channel of a flexible cystoscope (35). The flexible cystoscope can be utilized to allow the physician performing the dilatation to observe the external sphincter to ensure that there is no dilation thereof.
Inventors
- 👤 Gary H. Miller
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:13
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/307; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00082; A61B1/00147; A61B1/00154; A61B1/012; A61B1/018; A61M; A61M29/00; A61M29/02; A61M25/00; A61M25/0043; A61M2025/0063; A61M25/10; A61M2025/1043; A61M2025/1079
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
155 words
A dilatation catheter having: an elongated catheter body with proximal and distal ends and an inner lumen which extends therethrough; an inflatable balloon on a distal portion of the catheter body which has an interior in fluid communication with the inner lumen of the catheter body; a core member fixed within the catheter body which extends through the interior of the inflatable balloon and at least to the distal end of the catheter body; and means to seal the distal end of the catheter body about the portion of the core member which extends thereto; wherein the catheter may be advanced through a patient's urethra and the inflatable balloon of the dilatation catheter is positioned within the prostatic urethra distal to the external urethral sphincter thereof, then inflation fluid is directed through the inner lumen of the catheter body into the interior of the balloon to inflate the balloon and thereby dilate the prostatic urethra.
Claim 2
Dependent Claim
60 words
The catheter of claim 1 wherein the core member extends out the distal end of the catheter body and has a flexible member on the portion extending out of the catheter body and wherein the flexible body on the distal end of the core member extends into a patient's bladder when the balloon is positioned within the patient's prostatic urethra.
Claim 3
Dependent Claim
52 words
The catheter of claim 1 wherein a portion of the catheter body proximal to the balloon is slidably disposed within a working channel of a cystoscope with the distal end of the cystoscope adjacent the external sphincter so that the sphincter can be observed through the cystoscope when the balloon is inflated.
Claim 4
Dependent Claim
159 words
A catheter system for dilating a prostatic urethra, comprising: a) a cystoscope having an elongated tubular body having proximal and distal ends and provided with observation means extending therethrough, means on the proximal end thereof to view an area adjacent the distal end thereof, and a working channel passing therethrough with an opening at the distal end thereof; and b) a dilatation catheter slidably disposed within the working channel of the cystoscope, the dilatation catheter having: i) an elongated catheter body with proximal and distal ends and an inner lumen extending therein, ii) a flexible, relatively inelastic balloon on a distal portion of the elongated body which has an interior in fluid communication with the inner lumen of the elongated catheter body, iii) a core member fixed within the catheter body and extending at least to the distal end thereof, iv) means on the proximal end of the catheter body to direct inflation fluid to the inner lumen therein.
Claim 5
Dependent Claim
131 words
A balloon catheter for the dilatation of patient's prostatic urethra, comprising: a) a catheter body less than 100 cm in length and less than 4 mm in diameter having proximal and distal ends and an inner lumen extending therein; b) an inflatable balloon on the distal end of the catheter body in fluid communication with the inner lumen within the catheter body and having a maximum inflated diameter of at least 10 mm; c) a core member disposed within the inner lumen of the catheter body and extending to at least the distal end of the catheter body; and d) means on the proximal end of the catheter body to introduce inflation liquid into the inner lumen of the catheter body wherein it is directed to the interior of the balloon.
Claim 6
Dependent Claim
63 words
The catheter system of claim 4 wherein the core member extends out of the distal end of the catheter body and a flexible member is disposed about and secured to the portion of the core member extending out of the catheter body, the cystoscope having a flexible tubular body with the working channel therein having a diameter of not more than 4 mm.
Claim 7
Dependent Claim
18 words
The system of claim 6 wherein the working channel has a diameter of not more than 3 mm.
Claim 8
Dependent Claim
55 words
The system of claim 4 wherein the balloon is secured by the proximal and distal ends thereof to the catheter body which extends therethrough and wherein the maximum diameter of the catheter body proximal to the balloon is less than about 3 mm so as to be slidable within the working channel of the cystoscope.
Claim 9
Dependent Claim
31 words
The system of claim 4 wherein the balloon has an inflated diameter of between about 15 and about 40 mm and wherein the catheter is less than 100 cm in length.
Claim 10
Independent Claim
19 words
The system of claims 4 or 5 wherein the catheter is about 30 to about 80 cm in length.
Claim 11
Dependent Claim
20 words
The catheter of claim 5 wherein the balloon has a maximum inflated diameter between about 15 and about 50 mm.
Claim 12
Dependent Claim
34 words
The catheter of claim 5 wherein the diameter of the catheter body proximal to the balloon is less than 2 mm so as to be slidable within a working channel of a flexible cystoscope.
Claim 13
Dependent Claim
63 words
The catheter of claim 5 wherein the distal end of the catheter body is sealed about the portion of the core member extending thereto and wherein the core member extends through the distal end of the catheter body and a flexible body is disposed about and secured to the portion of the core member which extends through distal end of the catheter body.
Claim 14
Dependent Claim
32 words
The catheter of claim 13 wherein the flexible body is a helical coil and wherein the helical coil has a proximal end secured to in the distal end of the catheter body.
References Cited (Backward Citations)
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