US4946466A
Expired / Lapsed
US
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Transluminal angioplasty apparatus
Assignee: Cordis Corp
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Filing: 1989-03-03
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Granted: 1990-08-07
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Expires: 2009-03-03
Abstract
Abstract An apparatus for performing transluminal angioplasty is provided. The apparatus of the present invention may be utilized in blood vessels of very small cross-sectional diameter as well as in blood vessels of larger diameter. The apparatus of the present invention includes a hollow metallic guidewire with an expandable balloon member affixed to the hollow guidewire at or near the distal end thereof. The hollow guidewire is preferably metallic and more preferably made of stainless steel. In the preferred embodiment, the metallic guidewire provides a catheter of extremely small diameter while simultaneously imparting good torque control and excellent pushability of the apparatus within the blood vessel being treated.
Inventors
- 👤 Leonard Pinchuk
- 👤 John B. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:53
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/104; A61M25/01; A61M25/09; A61M2025/09008; A61M2025/09058; A61M2025/09066; A61M2025/1043; A61M2025/1079
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
60 words
A surgical apparatus for performing transluminal angioplasty, comprising: a hollow metallic guidewire having a proximal end and a distal end; an expandable balloon member affixed to said hollow guidewire near said distal end; and a fill hole located in the wall of said hollow guidewire and within said expandable balloon member when said balloon member is affixed to said guidewire.
Claim 2
Dependent Claim
60 words
A surgical apparatus for performing transluminal angioplasty, comprising: a hollow metallic guidewire having a proximal end and a distal end; an expandable balloon member affixed to said hollow guidewire near said distal end; and a fill hole located in the wall of said hollow guidewire and within said expandable balloon member when said balloon member is affixed to said guidewire.
Claim 3
Dependent Claim
24 words
The surgical apparatus of claim 1, wherein said hollow metallic guidewire further includes distal end means for sealing said distal end of said guidewire.
Claim 4
Dependent Claim
16 words
The surgical apparatus of claim 1, wherein said hollow metallic guidewire is made of stainless steel.
Claim 5
Dependent Claim
20 words
The surgical apparatus of claim 1, wherein said hollow metallic guidewire has an outer diameter less than about 0.04 inches.
Claim 6
Dependent Claim
19 words
The surgical apparatus of claim 4, wherein said hollow metallic guidewire has an outer diameter of about 0.014 inches.
Claim 7
Dependent Claim
46 words
The surgical apparatus of claim 1, wherein said expandable balloon member is adhesively affixed to said hollow guidewire with one or more substances selected from the group consisting essentially of silicone rubber adhesives, epoxy adhesives, urethane adhesives, isocyanate terminated polymers, cyanoacrylates, aminosilanes, hydroxysilanes, isocyanatesilanes, and glycidilsilanes.
Claim 8
Dependent Claim
29 words
The surgical apparatus of claim 6, wherein said expandable balloon member is affixed to said guidewire with one or more of said substances and with the application of heat.
Claim 9
Dependent Claim
16 words
The surgical apparatus of claim 1, wherein said balloon member is melt fused to said guidewire.
Claim 10
Dependent Claim
32 words
The surgical apparatus of claim 1, wherein said expandable balloon member is inflated by the passage of fluid from within said hollow guidewire through said fill hole and into said expandable balloon.
Claim 11
Dependent Claim
15 words
The surgical apparatus of claim 1, wherein said expandable balloon member is made from nylon.
Claim 12
Dependent Claim
16 words
The surgical apparatus of claim 2, wherein said distal end means is a solid metallic guidewire.
Claim 13
Dependent Claim
15 words
The surgical apparatus of claim 2, wherein said distal end means is a polymeric material.
Claim 14
Dependent Claim
17 words
The surgical apparatus of claim 2, wherein the outer surface of said distal end means is threaded.
Claim 15
Dependent Claim
51 words
The surgical apparatus of claim 1, further comprising radiopaque means affixed to said guidewire and within said expandable balloon member for positioning said balloon member within a blood vessel under fluoroscopic examination thereof, said radiopaque means being a metallic material for providing contrast with said guidewire when viewed under said fluoroscope.
Claim 16
Dependent Claim
19 words
The surgical apparatus of claim 14, wherein said radiopaque means is affixed around the outer surface of said guidewire.
Claim 17
Dependent Claim
19 words
The surgical apparatus of claim 14, wherein said radiopaque means is affixed to the inner surface of said guidewire.
Claim 18
Dependent Claim
74 words
A surgical apparatus for performing transluminal angioplasty, comprising: a stainless steel hollow guidewire having a proximal end and a distal end, said hollow guidewire having an outer diameter of less than about 0.04 inches; an expandable balloon member affixed to said hollow guidewire near said distal end; and a fill hole located in the side of said hollow guidewire and within said expandable balloon member when said balloon member is affixed to said guidewire.
Claim 19
Dependent Claim
74 words
A surgical apparatus for performing transluminal angioplasty, comprising: a stainless steel hollow guidewire having a proximal end and a distal end, said hollow guidewire having an outer diameter of less than about 0.04 inches; an expandable balloon member affixed to said hollow guidewire near said distal end; and a fill hole located in the side of said hollow guidewire and within said expandable balloon member when said balloon member is affixed to said guidewire.
Claim 20
Dependent Claim
23 words
The surgical apparatus of claim 17, wherein said hollow guidewire further includes distal end means for sealing said distal end of said guidewire.
Claim 21
Dependent Claim
19 words
The surgical apparatus of claim 17, wherein said hollow metallic guidewire has an outer diameter of about 0.014 inches.
Claim 22
Dependent Claim
45 words
The surgical device of claim 17, wherein said expandable balloon member is adhesively affixed to said hollow guidewire with one or more substances selected from the group consisting essentially of silicone rubber adhesives, epoxy adhesives, urethane adhesives, isocyanate terminated polymers, cyanoacrylates, aminosilanes, hydroxysilanes, isocyanatesilanes, glycidilsilanes
Claim 23
Dependent Claim
29 words
The surgical device of claim 20, wherein said expandable balloon member is affixed to said guidewire with one or more of said substances and with the application of heat.
Claim 24
Dependent Claim
16 words
The surgical device of claim 17, wherein said balloon member is melt fused to said guidewire.
Claim 25
Dependent Claim
32 words
The surgical apparatus of claim 17, wherein said expandable balloon member is inflated by the passage of liquid from within said hollow guidewire through said fill hole and into said expandable balloon.
Claim 26
Dependent Claim
15 words
The surgical apparatus of claim 17, wherein said expandable balloon member is made from nylon.
Claim 27
Dependent Claim
16 words
The surgical apparatus of claim 18, wherein said distal end means is a solid metallic guidewire.
Claim 28
Dependent Claim
15 words
The surgical apparatus of claim 18, wherein said distal end means is a polymeric material.
Claim 29
Dependent Claim
17 words
The surgical apparatus of claim 18, wherein the outer surface of said distal end means is threaded.
Claim 30
Dependent Claim
51 words
The surgical apparatus of claim 17, further comprising radiopaque means affixed to said guidewire and within said expandable balloon member for positioning said balloon member within a blood vessel under fluoroscopic examination thereof, said radiopaque means being a metallic material for providing contrast with said guidewire when viewed under said fluoroscope.
Claim 31
Dependent Claim
19 words
The surgical apparatus of claim 28, wherein said radiopaque means is affixed around the outer surface of said guidewire.
Claim 32
Dependent Claim
19 words
The surgical apparatus of claim 28, wherein said radiopaque means is affixed to the inner surface of said guidewire.
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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) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |