Patent US5370631A successfully refreshed from Google Patents.
US5370631A
Expired / Lapsed
US
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Method and apparatus for de-airing the heart
Assignee: Individual
•
Filing: 1994-02-25
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Granted: 1994-12-06
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Expires: 2014-02-25
Abstract
Abstract An apparatus for de-airing the heart comprises a clear, resilient bulb fixedly secured to an aspirating needle. The bulb includes a valve which permits air, upon squeezing the bulb, to be discharged therefrom. The aspirating needle includes an axial passage which is closed at the distal end of the needle. One or more longitudinal slots formed in the wall of the needle provide access to the axial passage of the needle for aspirating air from the heart.
Inventors
- 👤 Being-Tang Zhong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:10
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/84; A61M1/64; A61M1/68; A61M1/682; A61M2202/00; A61M2202/02; A61M2210/00; A61M2210/12; A61M2210/125
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A method of de-airing the heart of a patient, comprising the steps of: (a) holding the heart of the patient upright; (b) pinching a resilient bulb for substantially evacuating the air therefrom; (c) inserting an aspirating needle into the left ventricle of the heart, wherein said aspirating needle includes an axially hollow body terminating in a solid tip at one end and connected to said transparent resilient bulb at an opposite end, and wherein said body of said aspirating needle includes a longitudinal slot extending substantially the entire length between said solid distal end and said opposite end of said needle body; and (d) slowly releasing the pinching force applied to said bulb for aspirating fluid from the heart.
Claim 2
Independent Claim
119 words
A method of de-airing the heart of a patient, comprising the steps of: (a) holding the heart of the patient upright; (b) pinching a resilient bulb for substantially evacuating the air therefrom; (c) inserting an aspirating needle into the left ventricle of the heart, wherein said aspirating needle includes an axially hollow body terminating in a solid tip at one end and connected to said transparent resilient bulb at an opposite end, and wherein said body of said aspirating needle includes a longitudinal slot extending substantially the entire length between said solid distal end and said opposite end of said needle body; and (d) slowly releasing the pinching force applied to said bulb for aspirating fluid from the heart.
Claim 3
Dependent Claim
20 words
The method of claim 1 including the step of pumping the blood collected in said bulb back into the heart.
Claim 4
Dependent Claim
25 words
The method of claim 1 including repeating steps (b) and (d) until air bubbles are no longer observed in the fluid removed from the heart.
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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) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |