US4195637A
Expired / Lapsed
US
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Catheter arrangement, method of catheterization, and method of manufacturing a dilatation element
Assignee: Schneider Medintag AG
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Filing: 1977-11-21
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Granted: 1980-04-01
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Expires: 1997-11-21
Abstract
Abstract A catheter arrangement for opening or closing hollow spaces, cavities, passages and the like comprising a guide catheter and a dilatation catheter. A dilatation element arranged at the dilatation catheter has an at least partially cylindrical foldable wall. The catheterization technique employable with such catheter arrangement contemplates introducing the guide catheter by forces applied in translatory and rotational direction and engaging at the surface layer of the guide catheter, into the near region of the hollow space to be opened or closed, then inserting the dilatation catheter through a bore of the guide catheter, with the dilatation element having in its internal space a negative pressure in relation to the hollow space which is to be opened or closed. The dilatation catheter is then inserted through the guide catheter to such an extent that the dilatation element arrives at the loation which is to be opened or closed and at that location is dilated to a predetermined form and to the necessary diameter with a pre-selected excess pressure. There is also disclosed a method of manufacturing a dilatation element for use with the catheter arrangement.
Inventors
- 👤 Andreas Gruntzig
- 👤 Hans Gleichner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:19
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
107 words
A catheter arrangement for opening or closing hollow cavities and the like, comprising: a guide catheter; a dilatation catheter co-operating with said guide catheter; a dilatation element arranged at said dilatation catheter; said dilatation element being structured to have two lumens; one of said lumens being in flow communication with the exterior of the dilatation element for infeeding a liquid into the hollow cavity; the other of said lumens serving for dilating said dilatation element; said dilatation element having an at least partially cylindrical, pre-shaped foldable wall expansible to essentially a predetermined limited diameter and defining at least part of a boundary wall of said other lumen.
Claim 2
Dependent Claim
107 words
A catheter arrangement for opening or closing hollow cavities and the like, comprising: a guide catheter; a dilatation catheter co-operating with said guide catheter; a dilatation element arranged at said dilatation catheter; said dilatation element being structured to have two lumens; one of said lumens being in flow communication with the exterior of the dilatation element for infeeding a liquid into the hollow cavity; the other of said lumens serving for dilating said dilatation element; said dilatation element having an at least partially cylindrical, pre-shaped foldable wall expansible to essentially a predetermined limited diameter and defining at least part of a boundary wall of said other lumen.
Claim 3
Dependent Claim
34 words
The catheter arrangement as defined in claim 1, wherein: the length dimension of the wall amounts to at least twice its outside diameter when the dilatation element is exposed to an internal excess pressure.
Claim 4
Dependent Claim
38 words
The catheter arrangement as defined in claim 2, wherein: said dilatation element has opposite end regions; and each of said opposite end regions of said dilatation element having a substantially coneshaped configuration merging with a substantially cylindrical-shaped collar.
Claim 5
Dependent Claim
16 words
The catheter arrangement as defined in claim 2, wherein: said dilatation element is formed of polyvinylchloride.
Claim 6
Dependent Claim
27 words
The catheter arrangement as defined in claim 2, wherein: said dilatation element has a wall thickness amounting to at least 0.01 mm to at most 0.8 mm.
Claim 7
Dependent Claim
72 words
The catheter arrangement as defined in claim 2, further including: a carrier hose provided for the dilatation catheter; said dilatation catheter having a proximal end; said carrier hose being provided with a number of hollow spaces defining said lumens which are closed towards one another and communicating with said proximal end of said catheter; said catheter having an outer surface; and said hollow spaces opening into the outer surface of said catheter.
Claim 8
Dependent Claim
67 words
The catheter arrangement as defined in claim 2, further including: a carrier hose provided for the dilatation catheter; said dilatation catheter having a distal region and a proximal end; said carrier hose being provided with a number of hollow spaces defining said lumens which are closed towards one another and communicating with said proximal end of said catheter and opening into the proximal region of said catheter.
Claim 9
Dependent Claim
30 words
The catheter arrangement as defined in claim 2, further including: an at most slightly radiation-pervious marking element provided at least at the region of the dilatation element for X-ray localization.
Claim 10
Dependent Claim
27 words
The catheter arrangement as defined in claim 2, further including: a radiation-impervious marking element provided at least at the region of the dilatation element for X-ray localization.
Claim 11
Dependent Claim
58 words
The catheter arrangement as defined in claim 1, wherein: said guide catheter comprises an inner hose having an outer surface and a surface layer extending at least over a portion of the length of said inner hose upon its outer surface; and said surface layer being structured to transmit greater torsional forces in comparison to said inner hose.
Claim 12
Dependent Claim
36 words
The catheter arrangement as defined in claim 10, wherein: said guide catheter has a distal region which is pre-formed in such a manner that it possesses a mechanical pre-stress in relation to its position of use.
Claim 13
Dependent Claim
23 words
The catheter arrangement as defined in claim 10, wherein: said surface layer comprises a synthetic fiber fabric having a protective layer applied thereto.
Claim 14
Dependent Claim
23 words
The catheter arrangement as defined in claim 12, wherein: said synthetic fiber fabric is formed of polyamide and said protective layer of fluoroethylenepropylene.
Claim 15
Dependent Claim
22 words
The catheter arrangement as defined in claim 1, wherein: said two lumens are separate and in non-flow communicating relation to one another.
Claim 16
Dependent Claim
19 words
The catheter arrangement as defined in claim 1, further including: means for infeeding liquid to both of said lumens.
Claim 17
Dependent Claim
151 words
A catheter arrangement for opening or closing hollow cavities and the like, comprising: a guide catheter; a dilatation catheter co-operating with said guide catheter; a dilatation element arranged at said dilatation catheter; said dilatation element having an at least partially cylindrical, foldable wall; said guide catheter comprising an inner hose having an outer surface and a surface layer extending at least over a portion of the length of said inner hose upon its outer surface; said surface layer being structured to transmit greater torsional forces in comparison to said inner hose; said guide catheter having a distal region which is pre-formed in such a manner that it possesses a mechanical pre-stress in relation to its position of use; and the maximum outer diameter of the guide catheter amounts to approximately two-fold to four-fold its inner diameter and is reduced in size by about 10% to 25% at the pre-formed distal region.
Claim 18
Dependent Claim
151 words
A catheter arrangement for opening or closing hollow cavities and the like, comprising: a guide catheter; a dilatation catheter co-operating with said guide catheter; a dilatation element arranged at said dilatation catheter; said dilatation element having an at least partially cylindrical, foldable wall; said guide catheter comprising an inner hose having an outer surface and a surface layer extending at least over a portion of the length of said inner hose upon its outer surface; said surface layer being structured to transmit greater torsional forces in comparison to said inner hose; said guide catheter having a distal region which is pre-formed in such a manner that it possesses a mechanical pre-stress in relation to its position of use; and the maximum outer diameter of the guide catheter amounts to approximately two-fold to four-fold its inner diameter and is reduced in size by about 10% to 25% at the pre-formed distal region.
Claim 19
Dependent Claim
201 words
A catheterization method employing a catheter arrangement comprising a dilatation catheter and a guide catheter having a bore for receiving the dilatation catheter, comprising the steps of: introducing the guide catheter by forces acting in translatory and rotational direction and engaging at a surface layer thereof into the near region of a hollow cavity which is to be opened or closed; then displacing the dilatation catheter which contains a dilatation element having a pre-shaped foldable wall expansible to essentially a predetermined limited diameter and two lumens which are closed towards one another through the bore of the guide catheter, while the dilatation element has an internal space thereof at a negative pressure in relation to the pressure of the hollow cavity which is to be opened or closed; thereafter displacing the dilatation catheter through the guide catheter to such an extent that the dilatation element arrives at the location which is to be opened or closed; introducing a liquid into one of the lumens to dilate said dilatation element to a predetermined shape and a predetermined limited diameter at said location by applying a pre-selected excess pressure; and introducing a liquid into the other lumen for outflow into said hollow cavity.
Claim 20
Dependent Claim
201 words
A catheterization method employing a catheter arrangement comprising a dilatation catheter and a guide catheter having a bore for receiving the dilatation catheter, comprising the steps of: introducing the guide catheter by forces acting in translatory and rotational direction and engaging at a surface layer thereof into the near region of a hollow cavity which is to be opened or closed; then displacing the dilatation catheter which contains a dilatation element having a pre-shaped foldable wall expansible to essentially a predetermined limited diameter and two lumens which are closed towards one another through the bore of the guide catheter, while the dilatation element has an internal space thereof at a negative pressure in relation to the pressure of the hollow cavity which is to be opened or closed; thereafter displacing the dilatation catheter through the guide catheter to such an extent that the dilatation element arrives at the location which is to be opened or closed; introducing a liquid into one of the lumens to dilate said dilatation element to a predetermined shape and a predetermined limited diameter at said location by applying a pre-selected excess pressure; and introducing a liquid into the other lumen for outflow into said hollow cavity.
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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) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |