US4014318A — Circulatory assist device and system

Claim 1

Independent Claim 365 words

A miniaturized heart substitute implantable into the body of a living animal comprising a first tubular prosthesis adapted to be incorporated into the pulmonary artery with an inlet end thereof adapted to be communicated with the superior vena cava and the inferior vena cava, a second tubular prosthesis adapted to be incorporated into the aorta with an inlet end adapted to be communicated with the pulmonary vein, said prostheses being arranged in parallel, side-by-side relation, each tubular prosthesis being flexible and resilient and including a pair of longitudinally spaced valve means for one way flow therethrough, and a circulatory assist device associated with said tubular prostheses for sequentially and cyclically collaspsing portions of each tubular prosthesis from an inlet end toward the discharge end for pumping blood through the prostheses in a manner equivalent to the pumping action of a natural heart, said device including a pair of parallel, spaced, elongated stationary abutments receiving the tubular prostheses therebetween, movable members positioned between the tubular prostheses in opposed relation to the stationary abutments, and independent magnetically actuated means independently moving said movable members sequentially toward and away from the abutments for pumping blood through each tubular prosthesis, said magnetically actuated means including a solenoid for each movable member, each solenoid including a housing, a coil winding in said housing, a magnetic member connected to the movable member and associated with the coil winding for reciprocation of the movable member, said abutments being rigid with said housing and interconnected by an extension integral with the housing and disposed at one edge of the abutments, the opposite edges of the abutments being free, each movable member having an extension thereon parallel to the extension on the housing and extending over the free edge of the abutment adjacent the magnetic member and connected to the magnetic member, said magnetic members being generally in alignment with the longitudinal center of the tubular prosthesis, said valve means including a valve ring and disc flap assembly disposed interiorly of the prosthesis, said housing including annular recess means receiving said valve ring, said valve ring having a diameter greater than the prosthesis for anchoring the valve means and prosthesis in said recess means.

Claim 2

Dependent Claim 365 words

A miniaturized heart substitute implantable into the body of a living animal comprising a first tubular prosthesis adapted to be incorporated into the pulmonary artery with an inlet end thereof adapted to be communicated with the superior vena cava and the inferior vena cava, a second tubular prosthesis adapted to be incorporated into the aorta with an inlet end adapted to be communicated with the pulmonary vein, said prostheses being arranged in parallel, side-by-side relation, each tubular prosthesis being flexible and resilient and including a pair of longitudinally spaced valve means for one way flow therethrough, and a circulatory assist device associated with said tubular prostheses for sequentially and cyclically collaspsing portions of each tubular prosthesis from an inlet end toward the discharge end for pumping blood through the prostheses in a manner equivalent to the pumping action of a natural heart, said device including a pair of parallel, spaced, elongated stationary abutments receiving the tubular prostheses therebetween, movable members positioned between the tubular prostheses in opposed relation to the stationary abutments, and independent magnetically actuated means independently moving said movable members sequentially toward and away from the abutments for pumping blood through each tubular prosthesis, said magnetically actuated means including a solenoid for each movable member, each solenoid including a housing, a coil winding in said housing, a magnetic member connected to the movable member and associated with the coil winding for reciprocation of the movable member, said abutments being rigid with said housing and interconnected by an extension integral with the housing and disposed at one edge of the abutments, the opposite edges of the abutments being free, each movable member having an extension thereon parallel to the extension on the housing and extending over the free edge of the abutment adjacent the magnetic member and connected to the magnetic member, said magnetic members being generally in alignment with the longitudinal center of the tubular prosthesis, said valve means including a valve ring and disc flap assembly disposed interiorly of the prosthesis, said housing including annular recess means receiving said valve ring, said valve ring having a diameter greater than the prosthesis for anchoring the valve means and prosthesis in said recess means.

Claim 3

Dependent Claim 172 words

A circulatory assist device for controlled occlusion of a tubular prosthesis, said device comprising: a housing, a tubular prosthesis extending therethrough, a pair of occlusion members supported by said housing and normally spaced apart from each other by a dimension sufficient to receive the tubular prosthesis between said pair of members, and magnetic associated with said housing for effecting periodic reciprocal movement of at least one of said occlusion members toward the other to decrease said space and cause occlusion of the tubular prosthesis occupying said space, said tubular prosthesis having valve means therein on opposite sides of the occlusion members, said housing including a passageway receiving said prosthesis, said valve means distending said tubular prosthesis outwardly into mounting engagement with the periphery of the passageway, said passageway including a peripheral recess where it exits from the housing, said valve means including a split resilient ring having a diameter greater than the interior diameter of the prosthesis for distending the prosthesis outwardly and anchoring it and the valve means to the housing.

Claim 4

Dependent Claim 172 words

A circulatory assist device for controlled occlusion of a tubular prosthesis, said device comprising: a housing, a tubular prosthesis extending therethrough, a pair of occlusion members supported by said housing and normally spaced apart from each other by a dimension sufficient to receive the tubular prosthesis between said pair of members, and magnetic associated with said housing for effecting periodic reciprocal movement of at least one of said occlusion members toward the other to decrease said space and cause occlusion of the tubular prosthesis occupying said space, said tubular prosthesis having valve means therein on opposite sides of the occlusion members, said housing including a passageway receiving said prosthesis, said valve means distending said tubular prosthesis outwardly into mounting engagement with the periphery of the passageway, said passageway including a peripheral recess where it exits from the housing, said valve means including a split resilient ring having a diameter greater than the interior diameter of the prosthesis for distending the prosthesis outwardly and anchoring it and the valve means to the housing.

Claim 5

Dependent Claim 26 words

The structure as defined in claim 2 wherein said valve means includes a flap type disc valve swingably connected to said ring by a hinge tab.

Claim 6

Dependent Claim 26 words

The structure as defined in claim 3 wherein said ring, disc valve and hinge tab are constructed of unitary plastic material having resilient and memory characteristics.

Claim 7

Dependent Claim 55 words

The structure as defined in claim 3 wherein one of said occlusion members is a wall of the passageway, the other of the occlusion members including a reciprocal member defining a portion of the armature of an electromagnet, a partition wall sealingly and reciprocally receiving said reciprocal member for isolating the electromagnet from the prosthesis.

Claim 8

Dependent Claim 43 words

The structure as defined in claim 3 together with a second tubular prosthesis extending through said housing, a second pair of occlusion members and a second magnetic means for effecting periodic reciprocal movement of one of the occlusion members of the second pair.

Claim 9

Dependent Claim 255 words

A circulatory assist device for at least partially collapsing a tubular prosthesis, said device comprising: a housing, a flexible, resilient tubular prosthesis extending therethrough, a pair of prosthesis engaging members supported by said housing and normally spaced apart from each other by a dimension sufficient to receive the tubular prosthesis therebetween, and magnetic means associated with said housing for effecting periodic reciprocal movement of at least one of said prosthesis engaging members toward the other to decrease the space therebetween and cause at least partial collapse of the tubular prothesis occupying said space, said tubular prosthesis having valve means therein on opposite sides of the prosthesis engaging members, said housing including a recess receiving said prosthesis, said valve means being supported by said housing at opposite end portions of said recess, one of said prosthesis engaging members being a wall of the recess, the other of said prosthesis engaging members including a movable member opposed to the wall of the recess and being movable toward and away therefrom, and an electromagnetic in said housing in sealed relation to the recess and connected with the movable member for moving it in relation to the tubular prosthesis and the wall of the recess, said housing including a peripheral groove at each end of the recess, said valve means being disposed interiorly of the tubular prosthesis and includes a perimeter greater than the interior of the prosthesis for distending the prosthesis into the peripheral groove for mounting the valve means and prosthesis stationarily with respect to the housing.

Claim 10

Dependent Claim 255 words

A circulatory assist device for at least partially collapsing a tubular prosthesis, said device comprising: a housing, a flexible, resilient tubular prosthesis extending therethrough, a pair of prosthesis engaging members supported by said housing and normally spaced apart from each other by a dimension sufficient to receive the tubular prosthesis therebetween, and magnetic means associated with said housing for effecting periodic reciprocal movement of at least one of said prosthesis engaging members toward the other to decrease the space therebetween and cause at least partial collapse of the tubular prothesis occupying said space, said tubular prosthesis having valve means therein on opposite sides of the prosthesis engaging members, said housing including a recess receiving said prosthesis, said valve means being supported by said housing at opposite end portions of said recess, one of said prosthesis engaging members being a wall of the recess, the other of said prosthesis engaging members including a movable member opposed to the wall of the recess and being movable toward and away therefrom, and an electromagnetic in said housing in sealed relation to the recess and connected with the movable member for moving it in relation to the tubular prosthesis and the wall of the recess, said housing including a peripheral groove at each end of the recess, said valve means being disposed interiorly of the tubular prosthesis and includes a perimeter greater than the interior of the prosthesis for distending the prosthesis into the peripheral groove for mounting the valve means and prosthesis stationarily with respect to the housing.

Claim 11

Dependent Claim 51 words

The structure as defined in claim 7, wherein said valve means includes an annular peripheral member having an interior perimeter generally equal to the interior of the tubular prosthesis, and a flap valve hingedly connected to said annular member for pivotal movement in relation to the longitudinal axis of the prosthesis.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1980-03-28	1980-09-27	1981-03-29	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1984-03-28	1984-09-27	1985-03-29	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1988-03-28	1988-09-27	1989-03-29	$7700.00	Window Closed / Lapsed

Circulatory assist device and system

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