Patent US3766567A successfully refreshed from Google Patents.
US3766567A
Expired / Lapsed
US
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Artificial heart assembly and heart assist device
Assignee: Bayer Corp
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Filing: 1971-08-20
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Granted: 1973-10-23
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Expires: 1991-08-20
Abstract
Abstract An artificial heart assembly comprising a pair of ventricles, a pair of atria or inflow means, a pair of sinus or outflow means for pumped blood, and fluid pumps to drive the ventricles. In a modification, a single ventricle is used as a ventricular assist device. Each ventricle has a shell providing a ventricular cavity and at least one pumping chamber in the shell. The chamber has a flexible non-stretching wall and a rigid wall sealed to each other. The rigid wall has an aperture to permit entry of the pumping fluid into the chamber. A blood-compatible material covers all blood-exposed surfaces in the cavity.
Inventors
- 👤 P Kahn
- 👤 R Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:54
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/80; A61M60/855; A61M60/89; A61M60/894; A61M60/10; A61M60/122; A61M60/165; A61M60/178; A61M60/196; A61M60/40; A61M60/424; A61M60/427; A61M60/435; A61M60/835; A61M60/837; A61M60/857; A61M60/859; A61M60/861; A61M60/863; A61M60/126; A61M60/148; A61M60/20; A61M60/247; A61M60/253; A61M60/268; Y; Y10; Y10S; Y10S128/00; Y10S128/03
Claims Analysis
Total Claims: 65
Claim 1
Independent Claim
159 words
An improved artificial ventricle including in combination: a generally rigid ventricle shell means providing a ventricular cavity and having inlet means and outlet means for blood, said verticle shell means comprising an outer shell and an inner shell, pumping means providing at least two pumping chambers within said cavity and comprising a diaphragm for each pumping chamber secured between said inner and outer shells and dividing the pumping chamber from a blood-flow chamber in said cavity, each said diaphragm being a flexible, non-stretching, impervious membrane, said inner shell having aperture means enabling entrance of pumping fluid into said pumping chambers, said inner shell being sealed at its back side to each said diaphragm and to said outer shell, blood-compatible material covering all blood-exposed surfaces of said ventricle shell and said diaphragm, and conduit means connected to said aperture means for conducting pumping flow to said chamber, said pumping chambers enabling central flow of blood in said blood flow chamber.
Claim 2
Dependent Claim
159 words
An improved artificial ventricle including in combination: a generally rigid ventricle shell means providing a ventricular cavity and having inlet means and outlet means for blood, said verticle shell means comprising an outer shell and an inner shell, pumping means providing at least two pumping chambers within said cavity and comprising a diaphragm for each pumping chamber secured between said inner and outer shells and dividing the pumping chamber from a blood-flow chamber in said cavity, each said diaphragm being a flexible, non-stretching, impervious membrane, said inner shell having aperture means enabling entrance of pumping fluid into said pumping chambers, said inner shell being sealed at its back side to each said diaphragm and to said outer shell, blood-compatible material covering all blood-exposed surfaces of said ventricle shell and said diaphragm, and conduit means connected to said aperture means for conducting pumping flow to said chamber, said pumping chambers enabling central flow of blood in said blood flow chamber.
Claim 3
Dependent Claim
29 words
The ventricle of claim 1 wherein said pumping chambers are so disposed that when fully expanded the flexible membranes do not touch each other, thereby minimizing red cell trauma.
Claim 4
Dependent Claim
45 words
at least two pumping chambers disposed in said cavity and having one flexible nonstretching diaphragm wall separating each said pumping chamber from a blood-flow chamber in said cavity and a more rigid inner shell sealed to each said diaphragm and secured to said outer shell,
Claim 5
Dependent Claim
45 words
at least two pumping chambers disposed in said cavity and having one flexible nonstretching diaphragm wall separating each said pumping chamber from a blood-flow chamber in said cavity and a more rigid inner shell sealed to each said diaphragm and secured to said outer shell,
Claim 6
Dependent Claim
23 words
at least two pumping chambers disposed in said cavity, each having one flexible nonstretching wall and one rigid wall sealed to each other,
Claim 7
Dependent Claim
23 words
at least two pumping chambers disposed in said cavity, each having one flexible nonstretching wall and one rigid wall sealed to each other,
Claim 8
Dependent Claim
23 words
at least two pumping chambers disposed in said cavity each having one flexible nonstretching wall and one rigid wall sealed to each other,
Claim 9
Dependent Claim
23 words
at least two pumping chambers disposed in said cavity each having one flexible nonstretching wall and one rigid wall sealed to each other,
Claim 10
Dependent Claim
20 words
each said rigid wall secured to said shell and having an aperture for entry of pumping fluid into said chamber,
Claim 11
Dependent Claim
20 words
each said rigid wall secured to said shell and having an aperture for entry of pumping fluid into said chamber,
Claim 12
Dependent Claim
20 words
each said rigid wall secured to said shell and having an aperture for entry of pumping fluid into said chamber,
Claim 13
Dependent Claim
20 words
each said rigid wall secured to said shell and having an aperture for entry of pumping fluid into said chamber,
Claim 14
Dependent Claim
17 words
said inner shell having an aperture therein to permit entry of pumping fluid into said pumping chamber,
Claim 15
Dependent Claim
17 words
said inner shell having an aperture therein to permit entry of pumping fluid into said pumping chamber,
Claim 16
Dependent Claim
27 words
The ventricle of claim 1 wherein said pumping chambers are disposed to diverge from each other upwardly and outwardly from a lower end of said shell means.
Claim 17
Dependent Claim
15 words
The ventricle of claim 1 wherein said shell means is made from stiff silicone rubber.
Claim 18
Dependent Claim
10 words
blood-compatible material covering all blood-exposed surfaces in said cavity; and
Claim 19
Dependent Claim
10 words
blood-compatible material covering all blood-exposed surfaces in said cavity; and
Claim 20
Dependent Claim
14 words
said flexible wall dividing said pumping chamber from a blood-flow chamber in said cavity,
Claim 21
Dependent Claim
14 words
said flexible wall dividing said pumping chamber from a blood-flow chamber in said cavity,
Claim 22
Dependent Claim
15 words
each said flexible wall dividing said pumping chamber from a blood-flow chamber in said cavity,
Claim 23
Dependent Claim
15 words
each said flexible wall dividing said pumping chamber from a blood-flow chamber in said cavity,
Claim 24
Dependent Claim
9 words
blood-compatible material covering all blood-exposed surfaces in said cavity,
Claim 25
Dependent Claim
9 words
blood-compatible material covering all blood-exposed surfaces in said cavity,
Claim 26
Dependent Claim
10 words
blood-compatible material covering all blood-exposed surfaces in said cavity; and
Claim 27
Dependent Claim
10 words
blood-compatible material covering all blood-exposed surfaces in said cavity; and
Claim 28
Dependent Claim
9 words
means to conduct pumping fluid to said pumping chamber,
Claim 29
Dependent Claim
9 words
means to conduct pumping fluid to said pumping chamber,
Claim 30
Dependent Claim
19 words
The ventricle of claim 1 wherein said shell means is made from glass fiber cloth impregnated with epoxy resin.
Claim 31
Dependent Claim
13 words
The ventRicle of claim 1 wherein said shell means is made from metal.
Claim 32
Dependent Claim
6 words
said chambers being of predetermined capacity.
Claim 33
Dependent Claim
6 words
said chambers being of predetermined capacity.
Claim 34
Dependent Claim
10 words
means for conducting said pumping fluid to said pumping chamber,
Claim 35
Dependent Claim
10 words
means for conducting said pumping fluid to said pumping chamber,
Claim 36
Dependent Claim
11 words
means for conducting said pumping fluid to each said pumping chamber,
Claim 37
Dependent Claim
11 words
means for conducting said pumping fluid to each said pumping chamber,
Claim 38
Dependent Claim
66 words
inflow and outflow valves for blood flowing to and from said blood-flow chamber, b. an apex connector, covered with blood-compatible material, having means enabling suture of said connector to a patient''s heart and providing a channel for removal of blood from that heart, and c. conduit means for connecting said apex connector to said artificial ventricle and for connecting said ventricle to the patient''s descending aorta.
Claim 39
Dependent Claim
66 words
inflow and outflow valves for blood flowing to and from said blood-flow chamber, b. an apex connector, covered with blood-compatible material, having means enabling suture of said connector to a patient''s heart and providing a channel for removal of blood from that heart, and c. conduit means for connecting said apex connector to said artificial ventricle and for connecting said ventricle to the patient''s descending aorta.
Claim 40
Dependent Claim
6 words
said chambers being of predetermined capacity.
Claim 41
Dependent Claim
6 words
said chambers being of predetermined capacity.
Claim 42
Dependent Claim
15 words
The ventricle of claim 1 wherein said blood-exposed surfaces are all covered with Dacron velour.
Claim 43
Dependent Claim
14 words
The ventricle of claim 1 wherein said flexible membrane is of flexible silicone rubber.
Claim 44
Dependent Claim
14 words
The ventricle of claim 1 wherein said flexible membrane is of elastomer-impregnated non-expandable cloth.
Claim 45
Dependent Claim
14 words
The ventricle of claim 1 having valves in both said inlet and outlet means.
Claim 46
Dependent Claim
15 words
The ventricle of claim 1 having an artificial atrium detachably connected to said inlet means.
Claim 47
Dependent Claim
15 words
The ventricle of claim 11 having an artificial sinus detachably connected to said outlet means.
Claim 48
Dependent Claim
76 words
The ventricle of claim 12 wherein both said detachable connections comprise a pair of rings, one rotatably mounted to said ventricle, the other being secured in one instance to said sinus and in the other instance to said atrium, each ring of each pair having a flange with suture openings therethrough, the rotatable mounting of said one ring of each pair enabling alignment of its suture openings with those of the other ring of that pair.
Claim 49
Dependent Claim
28 words
The ventricle of claim 13 wherein a valve is seated by press fit in an annular shouldered recess in each said ring that is mounted to said ventricle.
Claim 50
Dependent Claim
74 words
An artificial heart assembly comprising in combination: a. a pair of ventricles, b. a pair of atria, one connected to each said ventricle, c. a pair of sinus, one connected to each said ventricle, d. means to provide pumping fluid to said assembly, e. outflow means for pumped blood, including a valve for each ventricle, f. intake means for blood to be pumped, including a valve for each ventricle, g. each said ventricle comprising:
Claim 51
Dependent Claim
74 words
An artificial heart assembly comprising in combination: a. a pair of ventricles, b. a pair of atria, one connected to each said ventricle, c. a pair of sinus, one connected to each said ventricle, d. means to provide pumping fluid to said assembly, e. outflow means for pumped blood, including a valve for each ventricle, f. intake means for blood to be pumped, including a valve for each ventricle, g. each said ventricle comprising:
Claim 52
Dependent Claim
12 words
The assembly of claim 15 wherein said blood-compatible material is Dacron velour.
Claim 53
Dependent Claim
99 words
The assembly of claim 15 wherein each said ventricle has two connectors, each having a body with an annular shouldered recess, and a stiff radial flange rotatably mounted to said body and having circumferentially spaced holes therethrough, one said valve being seated and held in each said recess, a connector for each atrium and each sinus mated with a connector on said ventricle and each having a radial flange with circumferentially spaced holes therethrough and alignable with those of a flange on the ventricle''s connector, by rotation of the flange on the ventricle''s connector, for suturing said flanges together.
Claim 54
Dependent Claim
22 words
The assembly of claim 17 wherein each said valve is a low-profile valve having an annular housing press fitted into said recess.
Claim 55
Dependent Claim
104 words
An artificial heart ventricle assembly comprising in combination: a. a ventricle, b. an atrium separate from said ventricle and separately attachable to a patient''s atrial remnant before attachment to said ventricle, c. an atrioventricular valve enclosed between said atrium and said ventricle upon attachment of said atrium to said ventricle, d. a sinus separate from said ventricle and separately attachable to a patient''s aorta or pulmonary artery before attachment to said ventricle, e. a sinuventricular valve enclosed between said sinus and said ventricle upon attachment of said sinus to said ventricle, f. means for providing pumping fluid for said ventricle, each said ventrIcle comprising:
Claim 56
Dependent Claim
104 words
An artificial heart ventricle assembly comprising in combination: a. a ventricle, b. an atrium separate from said ventricle and separately attachable to a patient''s atrial remnant before attachment to said ventricle, c. an atrioventricular valve enclosed between said atrium and said ventricle upon attachment of said atrium to said ventricle, d. a sinus separate from said ventricle and separately attachable to a patient''s aorta or pulmonary artery before attachment to said ventricle, e. a sinuventricular valve enclosed between said sinus and said ventricle upon attachment of said sinus to said ventricle, f. means for providing pumping fluid for said ventricle, each said ventrIcle comprising:
Claim 57
Dependent Claim
12 words
The assembly of claim 19 wherein said blood-compatible material is Dacron velour.
Claim 58
Dependent Claim
90 words
The assembly of claim 19 wherein said atrium and said sinus each have a female connector having an annular socket receptacle and a radial flange having a plurality of spaced openings therethrough and said ventricle has two male connectors each pluggable into a said socket receptacle and having a radial flange mounted rotatably to said male connector and having a plurality of spaced openings therethrough like those of said flange of said female connector alignable therewith by rotation relative to said male connector, for suturing together of said mating connectors.
Claim 59
Dependent Claim
30 words
The assembly of claim 21 wherein each said male connector has an annular shouldered recess, one receiving said atrioventricular valve and one receiving said sinuventricular valve for press fit therewith.
Claim 60
Dependent Claim
12 words
A heart assist device, comprising in combination a. an artificial ventricle comprising
Claim 61
Dependent Claim
12 words
A heart assist device, comprising in combination a. an artificial ventricle comprising
Claim 62
Dependent Claim
13 words
The device of claim 23 wherein said conduit means comprises arterial graft tubing.
Claim 63
Dependent Claim
51 words
The device of claim 23 wherein each said conduit means is connected to said ventricle by a connector assembly comprising a male connector and a female connector, each having a body and a radial flange with identically spaced perforations therethrough, one said radial flange being rotatable relative to its said body.
Claim 64
Dependent Claim
53 words
The device of claim 23 wherein said apex connector comprises a rigid tube lined exteriorly and interiorly with blood compatible material and having a terminal radial flange for engaging the interior wall of the patient''s heart, and a radial sewing flange spaced away from said terminal flange and suturable to the heart muscles.
Claim 65
Dependent Claim
20 words
The device of claim 26 wherein said rigid tube has a radial flange to which said sewing flange is sutured.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |