Dan, the reason 5569156 cannot be retrieved by the womplex server seems to be that they are missing it, and larger chunks of data than they think. At least, the list of missing and incomplete patents, posted on the search page, states:
The current indexed data covers January 5, 1971 to December 17, 1996
Patent Numbers: 3552244 to 5586338, with some
known missing or incomplete patents.
Patent Issue Week
Status
Sep. 24, 1996
incomplete
Sep. 17, 1996
incomplete
Sep. 10, 1996
incomplete
Sep. 3, 1996
incomplete
Feb. 18, 1992
missing
While I am grateful to IBM for posting this excellent patent resource, at the same time, I am not surprised that they f####ed up the completeness. 600,000 layoffs have had their consequence.
OK, back to www.uspto.gov, where good ol' DEC, which laid off many thousands as well, has kept the books better:
United States Patent
5,569,156
Mussivand
Oct. 29, 1996
Electrohydraulic ventricular assist device
Inventors:
Mussivand; Tofy (Ottawa, CA).
Assignee:
Ottawa Heart Institute Research Corporation (CA).
Appl. No.:
303,766
Filed:
Sept. 9, 1994
Foreign Application Priority Data
Sept. 10, 1993 [CA]
2105908
Sept. 10, 1993 [CA]
2105935
Intl. Cl. :
A61N 1/362
U.S. Cl.:
600/16; 623/3
Current U.S. Class:
600/16
Field of Search:
600/16-18; 623/2-3
References Cited | [Referenced By:]
U.S. Patent Documents
3,744,243
Jul., 1973
Faisandier
60/431
3,919,722
Nov., 1975
Harmison
3/1.7
4,173,796
Nov., 1979
Jarvik
3/1.7
4,222,127
Sept., 1980
Donachy et al.
3/1.7
4,397,049
Aug., 1983
Robinson et al.
3/1.7
4,547,991
Oct., 1985
Searcy
43/18.1
4,588,404
May, 1986
Lapeyre
623/3
4,704,120
Nov., 1987
Slonina
623/3
4,781,715
Nov., 1988
Wurzel
623/3
4,820,301
Apr., 1989
Chareire et al.
623/3
4,838,889
Jun., 1989
Kolff
623/3
4,888,011
Dec., 1989
Kung et al.
623/3
4,976,729
Dec., 1990
Holfert et al.
623/3
4,981,484
Jan., 1991
Holfert et al.
623/3
5,089,016
Feb., 1992
Millner et al.
623/3
5,089,018
Feb., 1992
Lapeyre et al.
623/3
5,089,020
Feb., 1992
Koppert
623/3
5,129,789
Jul., 1992
Thornton et al.
600/16
5,133,743
Jul., 1992
Stirmling
623/3
Foreign Patent Documents
1188852
Jun., 1985
CA
3/116
2007439
Jan., 1990
CA
326/15
2047534
Mar., 1992
CA
2239802A
Jan., 1990
GB
Other References
American Society for Artificial Internal Organs, 1992 Abstracts, 38th Annual Meeting, p. 39.
ASIO Transactions, vol. XXXVII Trans Am Soc Artif Intern Organs 1991, A Completely Implantable Total Artificial Heart System, p.
M237-M238, Jul./Sep. 1991.
Primary Examiner: Sykes; Angela D.
Assistant Examiner: Lacyk; John P.
Attorney, Agent or Firm: Bloom; Leonard
Abstract
The invention is directed to a unified system for an electrohydraulic ventricular assist device adapted for implantation in the thorax and for
cannulation to the blood circulatory system comprising an internal electronic controller for generating an actuating signal actuating means far
converting the actuating signal into a back arid forth rhythmic displacement of a fluid, a blood pumping chamber having an inflow blood port
and an outflow blood port for converting the back and forth displacement of the fluid into a rhythmic unidirectional displacement of blood
through the inflow and outflow port, hermetic coupling means for supplying the internal electronic controller with a supply voltage, detecting
means for generating the actuating signal in response to the status of the blood pumping chamber, a volume displacement chamber (VDC)
acting as a reservoir for the back and forth rhythmic displacement of a fluid, and a support with a surface curvature compatible with the internal
human sagittal and transverse chest wall curvatures for supporting the internal electronic controller, the actuating means, the blood pumping
chamber, the hermetic coupling means and the detecting means in a compact structure with the blood pumping chamber arranged with the
inflow and outflow ports oriented away from the support and the structure with an overall size that when the unified system is placed within the
human thorax with the support surface adjacent the chest wall, the structure does not adversely compress adjacent organs.
4 Claims, 16 Drawing Figures |
