US4781682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter having support flaps and method of inserting catheter
Assignee: Individual
•
Filing: 1987-08-13
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Granted: 1988-11-01
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Expires: 2007-08-13
Abstract
Abstract A catheter assembly having a dilating catheter and a guiding catheter. The guiding catheter has elongated, coaxial inner and outer tubes. The distal ends of the inner and outer tubes are connected together. A plurality of passages allow fluid flow through the connection between the inner and outer tubes. A plurality of support flaps are formed on the outer tube by a plurality of longitudinal slits. As the outer tube is moved longitudinally relative to the inner tube, the support flaps bend and move radially outward from the inner tube. The expanded support flaps, within the aorta, help to hold the end of the guiding catheter within the selected coronary artery. Radiopaque rings, mounted on each end of the support flaps, help to determine the location of the support flaps.
Inventors
- 👤 Piyush V. Patel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:39
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04; A61M25/0105; A61M25/0108
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
292 words
A method of inserting a catheter assembly for use in performing coronary angioplasty, wherein the catheter assembly comprises a dilating catheter having a balloon, an elongated inner tube coaxial with the dilating catheter having a proximate end and a distal end, an elongated outer tube coaxial with the inner tube having a proximate end and a distal end, the distal end of the outer tube being connected to the distal end of the inner tube, wherein the connection between the distal end of the inner tube and the distal end of the outer tube has a plurality of passages for blood flow between the inner tube and the outer tube, a plurality of support flaps formed on the outer tube by a plurality of longitudinal slits capable of radial movement when the outer tube is moved longitudinally relatively to the inner tube, the method comprising the steps of: introducing the catheter assembly into a femoral artery until the distal ends of the inner and outer tubes of the catheter assembly are located within the patient's aorta; maneuvering the proximate ends of the inner and outer tubes to insert the distal end of the inner and outer tubes into a selected artery; moving the proximate end of the outer tube longitudinally relative to the inner tube, in order to cause a plurality of support flaps to move radially outward from the inner tube and to support the distal ends of the inner and outer tubes in the selected coronary artery; inserting a dilating catheter having a balloon into the selected artery; and inflating the balloon with a fluid to enlarge the lumen of the selected artery for allowing the dilating catheter to pass through the selected artery and to perform the necessary angioplasty.
Claim 2
Independent Claim
292 words
A method of inserting a catheter assembly for use in performing coronary angioplasty, wherein the catheter assembly comprises a dilating catheter having a balloon, an elongated inner tube coaxial with the dilating catheter having a proximate end and a distal end, an elongated outer tube coaxial with the inner tube having a proximate end and a distal end, the distal end of the outer tube being connected to the distal end of the inner tube, wherein the connection between the distal end of the inner tube and the distal end of the outer tube has a plurality of passages for blood flow between the inner tube and the outer tube, a plurality of support flaps formed on the outer tube by a plurality of longitudinal slits capable of radial movement when the outer tube is moved longitudinally relatively to the inner tube, the method comprising the steps of: introducing the catheter assembly into a femoral artery until the distal ends of the inner and outer tubes of the catheter assembly are located within the patient's aorta; maneuvering the proximate ends of the inner and outer tubes to insert the distal end of the inner and outer tubes into a selected artery; moving the proximate end of the outer tube longitudinally relative to the inner tube, in order to cause a plurality of support flaps to move radially outward from the inner tube and to support the distal ends of the inner and outer tubes in the selected coronary artery; inserting a dilating catheter having a balloon into the selected artery; and inflating the balloon with a fluid to enlarge the lumen of the selected artery for allowing the dilating catheter to pass through the selected artery and to perform the necessary angioplasty.
Claim 3
Dependent Claim
164 words
A catheter assembly for use in performing coronary angioplasty, comprising: a dilating catheter; an elongated inner tube, coaxial with the dilating catheter, having a proximate end and a distal end; an elongated outer tube, coaxial with the inner tube, having a proximate end and a distal end, the distal end of the outer tube being connected to the distal end of the inner tube, wherein the connection between the distal end of the inner tube and the distal end of the outer tube has a plurality of passages for blood flow between the inner tube and the outer tube; a plurality of support flaps, formed on the outer tube by a plurality of longitudinal slits, wherein the support flaps move radially when the outer tube is moved longitudinally relative to the inner tube; a pair of radiopaque rings, mounted on the outer tube, one ring near each end of the slits; and a plastic grip, mounted on the proximate end of the outer tube.
Claim 4
Dependent Claim
164 words
A catheter assembly for use in performing coronary angioplasty, comprising: a dilating catheter; an elongated inner tube, coaxial with the dilating catheter, having a proximate end and a distal end; an elongated outer tube, coaxial with the inner tube, having a proximate end and a distal end, the distal end of the outer tube being connected to the distal end of the inner tube, wherein the connection between the distal end of the inner tube and the distal end of the outer tube has a plurality of passages for blood flow between the inner tube and the outer tube; a plurality of support flaps, formed on the outer tube by a plurality of longitudinal slits, wherein the support flaps move radially when the outer tube is moved longitudinally relative to the inner tube; a pair of radiopaque rings, mounted on the outer tube, one ring near each end of the slits; and a plastic grip, mounted on the proximate end of the outer tube.
References Cited (Backward Citations)
US648858A
Cited
US958854A
Cited
US3108595A
Cited
US3241554A
Cited
US3397699A
Cited
US3568659A
Cited
US3605750A
Cited
US3645955A
Cited
US3885561A
Cited
US4043338A
Cited
US3938530A
Cited
US4154242A
Cited
US4195637A
Cited
US4299226A
Cited
US4627838A
Cited
US4608965A
Cited
US4699611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |