US5772681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dilation catheter
Assignee: Metra ApS
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Filing: 1994-03-02
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Granted: 1998-06-30
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Expires: 2014-03-02
Abstract
Abstract A dilation catheter comprising a sealed distal end section (8), an open proximal end section (3) and an elongated middle section with an elongated flexible balloon section (11). The middle section comprises an inner elastic tube (1), a reinforcement net (2) made of metallic monofilaments surrounding the inner tube (1) and an outer elastic tube (6) surrounding the reinforcement net (2). The reinforcement net (2) is made of metallic monofilaments crossing each other and being helically wound around the longitudinal axis of the middle section. There is no special bond between the monofilaments so that said filaments are moveable with respect to each other in the crossover points (5) during expansion of the balloon section (11). As a result the entire catheter assumes the geometrical configuration of the blood vessel during insertion and inflation of the dilation section without noticeable axial dislocation or distortion of the natural bent of the blood vessel.
Inventors
- 👤 Gianni Leoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:27
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/0043; A61M25/005; A61M2025/1043; A61M2025/1084
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
183 words
A dilation catheter comprising a sealed distal end section (8), an open proximal end section (3) and an elongated middle section, one part of said middle section being an elongated flexible balloon section (11) expanding when supplied with pressure fluid through the proximal end section (3), said balloon section assuming a form of predominantly constant cross-section, said middle section comprising an inner elastic tube (1), a reinforcement net (2) made of metallic monofilaments surrounding the inner tube (1) and an outer elastic tube (6) surrounding the reinforcement net (2), wherein said reinforcement net (2) is made of metallic monofilaments crossing each other and being helically wound around the longitudinal axis of the middle section, the helices being and braided, wherein said reinforcement net (2) abuts on the outer surface of the inner tube (1) and the inner surface of the outer tube (6) at least in the area of the balloon section (11) when the balloon section (11) is expanded, and wherein said filaments are moveable with respect to each other in the crossover points (5) during expansion of the balloon section (11).
Claim 2
Dependent Claim
183 words
A dilation catheter comprising a sealed distal end section (8), an open proximal end section (3) and an elongated middle section, one part of said middle section being an elongated flexible balloon section (11) expanding when supplied with pressure fluid through the proximal end section (3), said balloon section assuming a form of predominantly constant cross-section, said middle section comprising an inner elastic tube (1), a reinforcement net (2) made of metallic monofilaments surrounding the inner tube (1) and an outer elastic tube (6) surrounding the reinforcement net (2), wherein said reinforcement net (2) is made of metallic monofilaments crossing each other and being helically wound around the longitudinal axis of the middle section, the helices being and braided, wherein said reinforcement net (2) abuts on the outer surface of the inner tube (1) and the inner surface of the outer tube (6) at least in the area of the balloon section (11) when the balloon section (11) is expanded, and wherein said filaments are moveable with respect to each other in the crossover points (5) during expansion of the balloon section (11).
Claim 3
Dependent Claim
17 words
A dilation catheter according to claim 1, wherein said metallic monofilament has an ultimate elongation of 5%.
Claim 4
Dependent Claim
21 words
A dilation catheter according to claim 1, wherein the inner (1) and outer elastic tubes (6) are made of thermoplastic material.
Claim 5
Dependent Claim
25 words
A dilation catheter according to claim 1, wherein the middle section also comprises a non-expandable part having a greater length than the balloon section (11).
Claim 6
Dependent Claim
20 words
A dilation catheter according to claim 1, wherein a guide-wire is provided in an inner lumen of said dilation cather.
Claim 7
Dependent Claim
180 words
A dilation catheter comprising a sealed distal end section (8), an open proximal end section (3) and an elongated middle section, one part of said middle section being an elongated flexible balloon section (11) expanding when supplied with pressure fluid through the proximal end section (3), said balloon section assuming a form of predominantly constant cross-section, said middle section comprising an inner elastic tube (1), a reinforcement net (2) made of metallic monofilaments surrounding the inner tube (1) and an outer elastic tube (6) surrounding the reinforcement net (2), wherein said reinforcement net (2) is a knitted net of metallic monofilaments, mesh rows of said net extending helically around the longitudinal axis of the middle section, wherein said reinforcement net (2) abuts on the outer surface of the inner tube (1) and the inner surface of the outer tube (6) at least in the area of the balloon section (11) when the balloon section (11) is expanded, and wherein said mesh rows are moveable with respect to each other in the crossover points (5) during expansion of the balloon section.
Claim 8
Dependent Claim
180 words
A dilation catheter comprising a sealed distal end section (8), an open proximal end section (3) and an elongated middle section, one part of said middle section being an elongated flexible balloon section (11) expanding when supplied with pressure fluid through the proximal end section (3), said balloon section assuming a form of predominantly constant cross-section, said middle section comprising an inner elastic tube (1), a reinforcement net (2) made of metallic monofilaments surrounding the inner tube (1) and an outer elastic tube (6) surrounding the reinforcement net (2), wherein said reinforcement net (2) is a knitted net of metallic monofilaments, mesh rows of said net extending helically around the longitudinal axis of the middle section, wherein said reinforcement net (2) abuts on the outer surface of the inner tube (1) and the inner surface of the outer tube (6) at least in the area of the balloon section (11) when the balloon section (11) is expanded, and wherein said mesh rows are moveable with respect to each other in the crossover points (5) during expansion of the balloon section.
Claim 9
Dependent Claim
17 words
A dilation catheter according to claim 6, wherein said metallic monofilament has an ultimate elongation of 5%.
Claim 10
Dependent Claim
21 words
A dilation catheter according to claim 6, wherein the inner (1) and outer elastic tubes (6) are made of thermoplastic material.
Claim 11
Dependent Claim
25 words
A dilation catheter according to claim 6, wherein the middle section also comprises a non-expandable part having a greater length than the balloon section (11).
Claim 12
Dependent Claim
20 words
A dilation catheter according to claim 6, wherein a guide-wire is provided in an inner lumen of said dilation catheter.
References Cited (Backward Citations)
US5360443A
Cited
US5328469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-29 | 2001-12-29 | 2002-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-29 | 2005-12-29 | 2006-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-29 | 2009-12-29 | 2010-06-30 | $7700.00 | Window Closed / Lapsed |