Sensor-equipped and algorithm-controlled direct mechanical ventricular assist device
First Claim
1. A method of treating a patient requiring heart function assistance or therapy comprising:
- 1) connecting the patient to a cardiac assist device, said device comprising;
a) a cup configured to encompass, and to seal and conform to said heart from atrio-ventricular groove to apex throughout systolic and diastolic actuation by imposing negative pressure between said cup and said heart, said cup having a compliant exterior wall attached to a compliant interior liner forming a continuous annular cavity between said wall and said liner, wherein the liner comprises a tapered unbonded transition section reducing in thickness to a thin section forming the liner adjacent a liner portion attached to the wall;
b) a drive system in closed fluid communication with said cavity to effect displacement of said cavity;
c) a sensor measuring at least one parameter; and
d) a control system in communication with said drive system and with said sensor;
2) collecting data from said sensor and importing said data into said control system;
3) using an algorithm to formulate a command instruction from said control system in response to said data; and
4) exporting said command instruction from said controller to said drive system to effect displacement of said annular cavity and wherein said displacement actively supports systolic and diastolic actuation of the heart.
5 Assignments
0 Petitions
Accused Products
Abstract
A process for assisting the function of a heart disposed within a body, and comprising an outer wall, comprising the steps of measuring at least one parameter that is indicative of the function of the heart, applying a compressive force to a portion of the outer wall of the heart, and applying an expansive force to the portion of the outer wall of the heart. The process is preferably performed with an apparatus comprising a cup-shaped shell having an exterior wall, an interior wall, an apex, and an upper edge; a liner having an outer surface and an inner surface, an upper edge joined to said interior wall of the cup-shaped shell, and a lower edge joined of the interior wall of the cup-shaped shell, thereby forming a cavity between the outer surface thereof and the interior wall of the shell; and a drive fluid cyclically interposed within the cavity, the drive fluid applying a uniform force on a portion of the outer wall of the heart.
200 Citations
52 Claims
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1. A method of treating a patient requiring heart function assistance or therapy comprising:
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1) connecting the patient to a cardiac assist device, said device comprising; a) a cup configured to encompass, and to seal and conform to said heart from atrio-ventricular groove to apex throughout systolic and diastolic actuation by imposing negative pressure between said cup and said heart, said cup having a compliant exterior wall attached to a compliant interior liner forming a continuous annular cavity between said wall and said liner, wherein the liner comprises a tapered unbonded transition section reducing in thickness to a thin section forming the liner adjacent a liner portion attached to the wall; b) a drive system in closed fluid communication with said cavity to effect displacement of said cavity; c) a sensor measuring at least one parameter; and d) a control system in communication with said drive system and with said sensor; 2) collecting data from said sensor and importing said data into said control system; 3) using an algorithm to formulate a command instruction from said control system in response to said data; and 4) exporting said command instruction from said controller to said drive system to effect displacement of said annular cavity and wherein said displacement actively supports systolic and diastolic actuation of the heart. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A method of treating a patient requiring heart function assistance or therapy comprising:
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1) connecting the patient to a cardiac assist device, said device comprising; a) a cup having a compliant exterior wall joined to a compliant interior rolling diaphragm liner continuously along two circumferential lines forming a continuous annular cavity said wall and said liner, wherein the liner comprises a tapered unbonded transition section reducing in thickness to a thin section, said cup configured to encompass, and to seal and conform to said heart from apex to atrio-ventricular groove throughout systolic and diastolic actuation by imposing negative pressure between said cup and said heart; and b) a drive system in closed fluid communication with said cavity to effect displacement of said cavity; c) a sensor; and d) a control system in communication with said drive system and with said sensor; 2) collecting from said sensor and importing said data into said control system; 3) using an algorithm to formulate a command instruction from said control system in response to said data; and 4) exporting said command instruction from said controller to said drive system to effect displacement of said annular cavity, and wherein said displacement actively supports systolic and diastolic actuation of the heart. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification