US5776114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible housing for intracorporeal use
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 1996-01-23
•
Granted: 1998-07-07
•
Expires: 2016-01-23
Abstract
Abstract An elongated flexible housing for an atherectomy or other intracorporeal catheter which is formed of a shape memory alloy such ass an alloy formed predominantly of NiTi intermetallic compound. The housing preferably has an inner chamber with a tissue cutter or other diagnostic or therapeutic system provided within the chamber to sever stenotic material which is urged into the chamber through a opening or window in the housing. In one embodiment the housing has at least one section which is relatively flexible with adjacent sections which are relatively stiff to provide an increase in the overall flexibility of the housing.
Inventors
- 👤 John J. Frantzen
- 👤 Sepehr Fariabi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:56
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320783; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0133; A61M25/0141; A61M25/0144; A61M25/0155; A61B2017/00831; A61B2017/00867; A61B17/22; A61B2017/22051; A61B2017/22052; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30092; A61F2210/00; A61F2210/0014; A61F2210/0023; A61M2205/00; A61M2205/02; A61M2205/0266
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
65 words
A housing for use within a patient's body lumen or cavity comprising a single piece of a cold worked shape memory alloy configured for intracorporeal use, having a tubular shape with an interior chamber extending therein, and at least one integral transformable shape memory section in a heat treated condition transformable from a first metallurgical phase existing at body temperature to a second metallurgical phase.
Claim 2
Dependent Claim
65 words
A housing for use within a patient's body lumen or cavity comprising a single piece of a cold worked shape memory alloy configured for intracorporeal use, having a tubular shape with an interior chamber extending therein, and at least one integral transformable shape memory section in a heat treated condition transformable from a first metallurgical phase existing at body temperature to a second metallurgical phase.
Claim 3
Dependent Claim
19 words
The housing of claim 1 wherein the transformable shape memory section is in a martensite phase at body temperature.
Claim 4
Dependent Claim
15 words
The housing of claim 2 wherein the transformable shape memory section is tubular in shape.
Claim 5
Dependent Claim
16 words
The housing of claim 1 wherein the shape memory alloy is predominately a NiTi intermetallic compound.
Claim 6
Dependent Claim
19 words
The housing of claim 4 wherein the transformable shape memory section is in a martensite phase at body temperature.
Claim 7
Dependent Claim
23 words
The housing of claim 5 wherein the martensite phase transforms to an austenite phase with a final austenite transformation temperature above body temperature.
Claim 8
Dependent Claim
58 words
The housing of claim 6 wherein an opening defined by the transformable shape memory section is provided in a wall of the housing and the shape memory section defining the opening is in a martensite phase which is transformable to an austenite phase with a straight memory by heating to a final austenite transformation temperature above body temperature.
Claim 9
Dependent Claim
20 words
The housing of claim 6 wherein the transformable shape memory section extends along a substantial part of the housing length.
Claim 10
Dependent Claim
46 words
The housing of claim 8 wherein the martensite phase in the transformable shape memory section extending a substantial part of the length of the housing is transformable to an austenite phase having a straight memory when heated to a final austenite transformation temperature above body temperature.
Claim 11
Dependent Claim
32 words
The housing of claim 9 wherein the transformation of the martensite phase to the austenite phase with a straight memory straightens the housing in the event the housing is deformed in use.
Claim 12
Dependent Claim
49 words
An intracorporeal housing which has a chamber therein and which is made of a single piece of a shape memory alloy configured for intracorporeal use, having at least one significant portion of the housing being relatively flexible and at least one significant portion of the housing being relatively stiff.
Claim 13
Dependent Claim
49 words
An intracorporeal housing which has a chamber therein and which is made of a single piece of a shape memory alloy configured for intracorporeal use, having at least one significant portion of the housing being relatively flexible and at least one significant portion of the housing being relatively stiff.
Claim 14
Dependent Claim
18 words
The intracorporeal housing of claim 11 wherein the shape memory alloy contains substantial amounts of NiTi intermetallic compound.
Claim 15
Dependent Claim
46 words
The intracorporeal housing of claim 12 wherein the relatively stiff portion of the housing is in a cold worked condition and the relatively flexible portion is in a heat treated condition transformable from a first metallurgical phase existing at body temperature to a second metallurgical phase.
Claim 16
Dependent Claim
16 words
The intracorporeal housing of claim 13 wherein the relatively flexible portion is in a martensite phase.
Claim 17
Dependent Claim
15 words
The intracorporeal housing of claim 14 wherein the martensite phase is stable at body temperature.
Claim 18
Dependent Claim
29 words
The intracorporeal housing of claim 15 wherein the martensite phase is transformable by heating to a temperature above a transformation temperature to an austenite phase with a shape memory.
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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) | 2001-07-06 | 2002-01-05 | 2002-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-07-06 | 2006-01-05 | 2006-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-07-06 | 2010-01-05 | 2010-07-07 | $7700.00 | Window Closed / Lapsed |