US5232444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dilatation catheter
Assignee: Individual
•
Filing: 1989-06-21
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Granted: 1993-08-03
•
Expires: 2009-06-21
Abstract
Abstract A catheter for dispensing medication into a body passage or cavity has a hollow shaft and an elongated, inflatable and deflatable member at one end of the shaft. The shaft functions to permit inflation and deflation of the elongated member. The elongated member, which serves as a carrier for the medication, has an intermediate portion centrally located between the ends of the elongated member and a lateral portion on either side of the intermediate portion. Each of the lateral portions extends from the intermediate portion to a respective end of the elongated member. The intermediate portion is perforate to permit the medication to be forced out of the elongated member and into a body passage or cavity when the elongated member is subjected to pressure during inflation. The lateral portions are imperforate so that they can serve as seals upon coming into contact with body tissue as the elongated member is inflated.
Inventors
- 👤 Hansjorg Just
- 👤 Ulrich Solzbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:25
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M16/00; A61M16/04; A61M16/0475; A61M16/0477; A61M16/0481; A61M25/0043; A61M2025/0057; A61M2025/1043; A61M2025/105; A61M2025/1086; Y; Y10; Y10S; Y10S128/00; Y10S128/917; Y10S128/919
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
117 words
A catheter for treating a body passage or cavity, particularly for treating stenoses in blood vessels, comprising an inflatable and deflatable member having a pair of spaced lateral portions which include opposed ends of said member, and an intermediate portion between said lateral portions, said member further having an external peripheral surface which includes a sealing section at each of said lateral portions and a perforate section at said intermediate portion provided with a plurality of openings, said sealing sections being arranged to bear against body tissue when said member is inflated in the body, and said member being devoid of openings between said intermediate portion and said ends; and means for inflating and deflating said member.
Claim 2
Dependent Claim
117 words
A catheter for treating a body passage or cavity, particularly for treating stenoses in blood vessels, comprising an inflatable and deflatable member having a pair of spaced lateral portions which include opposed ends of said member, and an intermediate portion between said lateral portions, said member further having an external peripheral surface which includes a sealing section at each of said lateral portions and a perforate section at said intermediate portion provided with a plurality of openings, said sealing sections being arranged to bear against body tissue when said member is inflated in the body, and said member being devoid of openings between said intermediate portion and said ends; and means for inflating and deflating said member.
Claim 3
Dependent Claim
19 words
The catheter of claim 1, wherein said member is elongated and said ends are longitudinal ends of said member.
Claim 4
Dependent Claim
16 words
The catheter of claim 1, wherein said intermediate portion is substantially centrally located between said ends.
Claim 5
Dependent Claim
24 words
The catheter of claim 1, wherein said member comprises means for accommodating a treating substance to be dispensed into a body passage or cavity.
Claim 6
Dependent Claim
14 words
The catheter of claim 4, further comprising a treating substance in said accommodating means.
Claim 7
Dependent Claim
17 words
The catheter of claim 1, wherein said openings have an approximately uniform distribution over said intermediate portion.
Claim 8
Dependent Claim
12 words
The catheter of claim 6, wherein said intermediate portion is substantially annular.
Claim 9
Dependent Claim
19 words
The catheter of claim 1, wherein said member comprises a balloon and said openings are provided in said balloon.
Claim 10
Dependent Claim
26 words
The catheter of claim 8, wherein said openings are arranged so that the cross-sectional areas of said openings decrease in response to inflation of said balloon.
Claim 11
Dependent Claim
27 words
The catheter of claim 1, wherein each of said openings constitutes part of a flow passage which is inclined to said perforate section of said peripheral surface.
Claim 12
Dependent Claim
16 words
The catheter of claim 10, wherein each of said flow passages deviates from a straight line.
Claim 13
Dependent Claim
10 words
The catheter of claim 11, wherein said flow passages zigzag.
Claim 14
Dependent Claim
33 words
The catheter of claim 1, wherein said openings are arranged so that the cross-sectional areas of said openings increase in response to exertion of pressure on said perforate section of said peripheral surface.
Claim 15
Dependent Claim
42 words
The catheter of claim 1, wherein said member has an axis passing through said ends and the total cross-sectional areas of said openings, as considered in planes substantially normal to said axis, decreases from the center of said member towards said ends.
Claim 16
Dependent Claim
32 words
The catheter of claim 1, wherein at least one of the number of said openings per unit area and opening cross-sectional area decreases from the center of said member towards said ends.
Claim 17
Dependent Claim
30 words
The catheter of claim 1, further comprising a fluid for inflating said member, said fluid containing or constituting a treating substance to be dispensed into a body passage or cavity.
Claim 18
Dependent Claim
48 words
The catheter of claim 1, wherein said member has a hollow interior which accommodates at least one compartment for a treating substance to be dispensed into a body passage or cavity, said one compartment being sealed from said interior and communicating with at least one of said openings.
Claim 19
Dependent Claim
20 words
The catheter of claim 17, further comprising a conduit which connects said one compartment with the exterior of said member.
Claim 20
Dependent Claim
23 words
The catheter of claim 18, wherein said inflating and deflating means comprises a hollow shaft and said conduit is disposed in said shaft.
Claim 21
Dependent Claim
20 words
The catheter of claim 17, wherein said one compartment is located adjacent to said perforate section of said peripheral surface.
Claim 22
Dependent Claim
51 words
The catheter of claim 1, wherein said member is provided with a plurality of compartments which are sealed from one another, each of said compartments communicating with at least one of said openings and accommodating at least part of a treating substance to be dispensed into a body passage or cavity.
Claim 23
Dependent Claim
17 words
The catheter of claim 21, wherein two neighboring compartments accommodate different components of a multicomponent treating substance.
Claim 24
Dependent Claim
28 words
The catheter of claim 1, wherein said intermediate portion comprises a compressible, sponge-like external layer containing a treating substance to be dispensed into a body passage or cavity.
Claim 25
Dependent Claim
32 words
The catheter of claim 1, wherein said member comprises an external layer which is separable from said member and contains a treating substance to be dispensed into a body passage or cavity.
Claim 26
Dependent Claim
11 words
The catheter of claim 24, wherein said layer is substantially annular.
Claim 27
Dependent Claim
15 words
The catheter of claim 24, wherein said layer is capable of binding to body tissue.
Claim 28
Dependent Claim
12 words
The catheter of claim 24, wherein said layer comprises a resorbable material.
Claim 29
Dependent Claim
24 words
The catheter of claim 24, wherein said layer comprises at least one of a sponge-like material and a compartment for accommodating said treating substance.
Claim 30
Dependent Claim
22 words
The catheter of claim 28, wherein said layer has an inner side and said inner side is impermeable to said treating substance.
Claim 31
Dependent Claim
25 words
The catheter of claim 24, wherein said layer has an inner side and said member comprises a parting layer in contact with said inner side.
Claim 32
Dependent Claim
14 words
The catheter of claim 30, wherein said parting layer is substantially inert to adhesive.
Claim 33
Dependent Claim
38 words
The catheter of claim 1, wherein said member comprises a sponge-like layer containing a treating substance for a body passage or cavity and at least one compartment to accommodate a treating substance for a body passage or cavity.
Claim 34
Dependent Claim
54 words
The catheter of claim 1, wherein said member comprises a balloon and a sponge-like layer on said balloon containing a treating substance for a body passage or cavity, said balloon being provided with at least one of a perforate portion and a compartment to accommodate a treating substance for a body passage or cavity.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-02 | 1997-02-01 | 1997-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-02 | 2001-02-01 | 2001-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-02 | 2005-02-01 | 2005-08-03 | $7700.00 | Window Closed / Lapsed |