Patent US3769960A successfully refreshed from Google Patents.
US3769960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intra-aortic balloon system
Assignee: THORETEC LABORATORIES Corp
•
Filing: 1972-04-17
•
Granted: 1973-11-06
•
Expires: 1992-04-17
Abstract
Abstract An intra-aortic balloon system includes a balloon adapted to be disposed within an aorta and to change from a minimum volume to a maximum volume at which the balloon substantially but not entirely fills the aorta. The change in balloon volume is effected by connecting the balloon through a catheter to a slave casing cup covered by a diaphragm. The balloon, catheter and covered slave casing cup constitute a substantially closed volume filled with physiologically acceptable gas. Movement of the diaphragm portion of the closed volume produces a substantially equal volume variation of the balloon. A master casing cup is disposed against the other side of the diaphragm and is supplied with a working gas, the pressure of which is changed according to a program. Leakage of physiologically acceptable gas is detected and made up when necessary. The slave casing cup volume is changeable to match different balloons or to match the same balloon under changed operating conditions.
Inventors
- 👤 T Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:56
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/50; A61M60/508; A61M60/515; A61M60/531; A61M60/10; A61M60/122; A61M60/126; A61M60/135; A61M60/139; A61M60/20; A61M60/295; A61M60/40; A61M60/497; A61M60/247; A61M60/253; A61M60/268; A61M60/274
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
201 words
An intra-aortic balloon system comprising a slave casing cup having a peripheral flange; a slave gas connector opening into said slave casing cup; a master, casing cup having a peripheral flange; means movably engaging said master casing cup flange; a master gas connector opening into said master casing cup; means including at least one diaphragm between said cups engaging said peripheral flanges and overlying said casing cups for movement through a central position and between deflected positions on opposite sides of said central position; means including the walls of said casing cups for limiting said movement of said diaphragm; an aortic balloon; a catheter at one end joined to and communicating with said aortic balloon and at the other end joined to and communicating with said slave gas connector, said aortic balloon, said catheter, said slave casing cup and said diaphragm together defining a substantially closed volume; means for supplying a physiologically acceptable gas to said substantially closed volume; a supply of working gas under pressure; means for supplying said working gas under pressure to said master casing cup to move said diaphragm; and means for imposing a programmed pressure change cycle on said working gas supplied to said master cup.
Claim 2
Dependent Claim
201 words
An intra-aortic balloon system comprising a slave casing cup having a peripheral flange; a slave gas connector opening into said slave casing cup; a master, casing cup having a peripheral flange; means movably engaging said master casing cup flange; a master gas connector opening into said master casing cup; means including at least one diaphragm between said cups engaging said peripheral flanges and overlying said casing cups for movement through a central position and between deflected positions on opposite sides of said central position; means including the walls of said casing cups for limiting said movement of said diaphragm; an aortic balloon; a catheter at one end joined to and communicating with said aortic balloon and at the other end joined to and communicating with said slave gas connector, said aortic balloon, said catheter, said slave casing cup and said diaphragm together defining a substantially closed volume; means for supplying a physiologically acceptable gas to said substantially closed volume; a supply of working gas under pressure; means for supplying said working gas under pressure to said master casing cup to move said diaphragm; and means for imposing a programmed pressure change cycle on said working gas supplied to said master cup.
Claim 3
Dependent Claim
18 words
A system as in claim 1 in which said limiting means includes conical walls of said casing cups.
Claim 4
Dependent Claim
36 words
A system as in claim 1 in which said means movably engaging said master casing cup flange comprises means for moving said master casing cup and said slave casing cup toward and away from each other.
Claim 5
Dependent Claim
70 words
A system as in claim 1 in which said slave casing cup has a mouth, said diaphragm overlies said mouth and on one side engages said peripheral flange of said slave casing cup, said means movably engaging said master casing cup flange comprises a ring engaging the other side of said diaphragm, and means for urging said peripheral flange of said slave casing cup and said ring toward each other.
Claim 6
Dependent Claim
27 words
A system as in claim 4 in which said ring is provided with first threads, and said master casing cup has second threads engaging said first threads.
References Cited (Backward Citations)
US2770799A
Cited
US3131638A
Cited
US3266487A
Cited
US3428042A
Cited
US3457909A
Cited
US3456444A
Cited
US3698381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |