Method and apparatus for direct mechanical ventricular actuation with favorable conditioning and minimal heart stress

• US 20060167334A1
• Filed: 03/05/2004
• Published: 07/27/2006
• Est. Priority Date: 06/26/2003
• Status: Abandoned Application

• Current Assignee: Myocardiocare, Inc.
• Original Assignee: Myocardiocare, Inc.
• Inventors: MacDonald, Stuart G., Anstadt, Mark P., Helfer, Jeffrey L., Anstadt, George W., Anstadt, George L.
• Application Number:
  US10/795,098
• Publication Number:
  US 20060167334A1
• Time in Patent Office: Days
• US Class Current: 600/17
• CPC Class Codes: A61M 2205/33 Controlling, regulating or measuring
• CPC Class Codes: A61M 2205/3303 Using a biosensor
• CPC Class Codes: A61M 60/148 in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
• CPC Class Codes: A61M 60/178 drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
• CPC Class Codes: A61M 60/191 mechanically acting upon the outside of the patient's native heart, e.g. compressive structures placed around the heart
• CPC Class Codes: A61M 60/268 the displacement member being flexible, e.g. membranes, diaphragms or bladders
• CPC Class Codes: A61M 60/289 Devices for mechanical circulatory actuation assisting the residual heart function by means mechanically acting upon the patient's native heart or blood vessel structure, e.g. direct cardiac compression [DCC] devices
• CPC Class Codes: A61M 60/435 with diastole or systole switching by valve means located between the blood pump and the hydraulic or pneumatic energy source
• CPC Class Codes: A61M 60/449 generated by a solenoid
• CPC Class Codes: A61M 60/468 the force acting on the actuation means being hydraulic or pneumatic
• CPC Class Codes: A61M 60/531 using blood pressure data, e.g. from blood pressure sensors
• CPC Class Codes: A61M 60/554 of blood pressure
• CPC Class Codes: A61N 1/0587 Epicardial electrode systems; Endocardial electrodes piercing the pericardium
• CPC Class Codes: A61N 1/0597 Surface area electrodes, e.g. cardiac harness
• CPC Class Codes: A61N 1/3627 for treating a mechanical deficiency of the heart, e.g. congestive heart failure or cardiomyopathy
• CPC Class Codes: A61N 1/3684 for stimulating the heart at multiple sites of the ventricle or the atrium

Abstract

A process for assisting the function of a heart disposed within a body, comprising the steps of supporting the heart in providing circulation of blood for perfusion of an organ in the body, remodeling the heart to render the heart in an improved state, and stabilizing the heart in the improved state. The process is preferably performed with an apparatus comprising a cup-shaped shell having an exterior surface and an interior surface; a liner having an outer surface, an upper edge joined to said interior surface of said cup-shaped shell, and a lower edge joined of said interior surface of said cup-shaped shell, thereby forming a cavity between said outer surface thereof and said interior surface of said shell; a drive fluid cyclically interposed within said cavity; and at least one sensor measuring at least one macroscopic parameter indicative of said function of said heart. Further embodiments of the process and apparatus include means and use thereof for delivering a therapeutic agent to the heart.

Claims

1. A process for assisting in a body the function of a heart, comprising the step of remodeling said heart to render said heart in an improved state.

2. The process as recited in claim 1, further comprising the step of stabilizing said heart in said improved state to maintain said improved state.

3. The process as recited in claim 1, further comprising the step of supporting said heart in providing circulation of blood for perfusion of an organ in said body.

4. The process as recited in claim 1, wherein said step of remodeling said heart comprises the step of measuring at least one cellular level parameter.

5. The process as recited in claim 4, wherein said at least one cellular level parameter is selected from the group of metabolic indicators consisting of biochemical markers of stress, biochemical markers of matrix metalloproteinases, and apoptotic cell signaling proteins.

6. The process as recited in claim 4, wherein said at least one cellular level parameter is selected from the group of metabolic indicators consisting of heat shock proteins, cytokines, caspases, reactive oxygen species, nitric oxide, Janus kinase, protein kinase C and Src.

7. The process as recited in claim 4, wherein said at least one cellular level parameter is an extracellular metabolic indicator.

8. The process as recited in claim 7, wherein said extracellular metabolic indicator is a tissue inhibitor of metalloproteinases.

9. The process as recited in claim 4, wherein said at least one cellular level parameter is an intracellular metabolic indicator.

10. The process as recited in claim 9, wherein said intracellular metabolic indicator is selected from the group consisting of focal adhesion tyrosine kinase, Src, Fyn, p130^Cas, and GTPase regulator.

11. The process as recited in claim 1, wherein said step of remodeling said heart comprises the step of measuring at least one macroscopic level parameter.

12. The process as recited in claim 11, wherein said at least one macroscopic level parameter is the first derivative of blood pressure.

13. The process as recited in claim 11, wherein said at least one macroscopic level parameter is the thickness of at least one portion of the heart wall.

14. The process as recited in claim 11, wherein said at least one macroscopic level parameter is the position of at least one portion of the heart wall.

15. The process as recited in claim 11, wherein said at least one macroscopic level parameter is blood flow velocity.

16. The process as recited in claim 15, wherein said blood flow velocity is measured proximate to a heart valve.

17. The process as recited in claim 1, wherein said step of remodeling said heart comprises the step of administering at least one therapeutic agent to said heart.

18. The process as recited in claim 17, wherein said at least one therapeutic agent is selected from the group consisting of genetic material, select DNA fragments, pre-and post-transcription regulation factors, pharmacologic agents, cytokines, pro-inflammatory agents, anti-inflammatory agents, beta-blockade, and membrane stabilizing agents.

20. The process as recited in claim 1, wherein said step of stabilizing said heart comprises the step of administering at least one therapeutic agent to said heart.

21. The process as recited in claim 20, wherein said at least one therapeutic agent is a tissue inhibitor of metalloproteinases.

22. The process as recited in claim 1, wherein said process is performed using a direct mechanical ventricular assistance apparatus comprising:

a. a cup-shaped shell having an exterior surface and an interior surface;

b. a liner having an outer surface, an upper edge joined to said interior surface of said cup-shaped shell, and a lower edge joined of said interior surface of said cup-shaped shell, thereby forming a cavity between said outer surface thereof and said interior surface of said shell;

c. a drive fluid cyclically interposed within said cavity; and

d. a first sensor measuring at least one parameter.

23. The process as recited in claim 22, wherein said at least one parameter is a cellular level parameter.

24. The process as recited in claim 22, wherein said at least one parameter is a macroscopic level parameter.

25. The process as recited in claim 22, wherein said apparatus further comprises means for administering a therapeutic agent.

26. The process as recited in claim 25, wherein said means for administering said therapeutic agent is said liner comprising said therapeutic agent.

19. The process as recited in claim 19, wherein said at least one therapeutic agent is a matrix metallo-proteinase system promoter.

27. A process for assisting in a body the function of a heart, comprising the steps of remodeling said heart to render said heart in an improved state, and stabilizing said heart in said improved state to maintain said improved state.

28. A process for assisting in a body the function of a heart, comprising the steps of supporting said heart in providing circulation of blood for perfusion of an organ in said body, and remodeling said heart to render said heart in an improved state.

29. A process for assisting in a body the function of a heart, comprising the steps of supporting said heart in providing circulation of blood for perfusion of an organ in said body, remodeling said heart to render said heart in an improved state, and stabilizing said heart in said improved state to maintain said improved state.

30. A process for assisting in a body the function of a heart, comprising the step of inducing in said heart a change in the extracellular matrix of said heart, wherein said extracellular matrix is changed from an ordered state to a relaxed state.

31. The process as recited in claim 30, wherein said step of inducing said change in said extracellular matrix from said ordered state to said relaxed state further comprises the step of administering at least one therapeutic agent to said heart.

32. The process as recited in claim 31, wherein said at least one therapeutic agent is a matrix metallo-proteinase system promoter.

33. The process as recited in claim 30, further comprising the step of supporting said heart in providing circulation of blood for perfusion of an organ in said body.

34. A process for assisting in a body the function of a heart, comprising the steps of inducing in said heart a change in the extracellular matrix of said heart, wherein said extracellular matrix is changed from an ordered state to a relaxed state;

and causing reverse remodeling of said heart to render said heart in an improved state.

35. The process as recited in claim 34, wherein said step of causing reverse remodeling of said heart to render said heart in an improved state further comprises the step of administering at least one therapeutic agent to said heart.

36. The process as recited in claim 35, wherein said at least one therapeutic agent is selected from the group consisting of genetic material, select DNA fragments, pre-and post-transcription regulation factors, pharmacologic agents, cytokines, pro-inflammatory agents, anti-inflammatory agents, beta-blockade, and membrane stabilizing agents.

37. The process as recited in claim 34, further comprising the step of measuring at least one cellular level parameter.

38. The process as recited in claim 37, wherein said at least one cellular level parameter is selected from the group of metabolic indicators consisting of biochemical markers of stress, biochemical markers of matrix metalloproteinases, and apoptotic cell signaling proteins.

39. The process as recited in claim 37, wherein said at least one cellular level parameter is selected from the group of metabolic indicators consisting of heat shock proteins, cytokines, caspases, reactive oxygen species, nitric oxide, Janus kinase, protein kinase C and Src.

40. The process as recited in claim 37, wherein said at least one cellular level parameter is an extracellular metabolic indicator.

41. The process as recited in claim 40, wherein said extracellular metabolic indicator is a tissue inhibitor of metalloproteinases.

42. The process as recited in claim 37, wherein said at least one cellular level parameter is an intracellular metabolic indicator.

43. The process as recited in claim 42, wherein said intracellular metabolic indicator is selected from the group consisting of focal adhesion tyrosine kinase, Src, Fyn, p130^Cas, and GTPase regulator.

44. The process as recited in claim 34, further comprising the step of measuring at least one macroscopic level parameter.

45. The process as recited in claim 44, wherein said at least one macroscopic level parameter is the first derivative of blood pressure.

46. The process as recited in claim 44, wherein said at least one macroscopic level parameter is the thickness of at least a portion of the heart wall.

47. The process as recited in claim 44, wherein said at least one macroscopic level parameter is the position of at least a portion of the heart wall.

48. The process as recited in claim 44, wherein said at least one macroscopic level parameter is blood flow velocity.

49. The process as recited in claim 48, wherein said blood flow velocity is measured proximate to a heart valve.

50. The process as recited in claim 34, wherein said process is performed using a direct mechanical ventricular assistance apparatus comprising:

a. a cup-shaped shell having an exterior wall, an interior wall, an apex, and an upper edge;

b. a liner having an outer surface and an inner surface, an upper edge joined to said interior wall of said cup-shaped shell, and a lower edge joined of said interior wall of said cup-shaped shell, thereby forming a cavity between said outer surface thereof and said interior wall of said shell; and

c. a drive fluid cyclically interposed within said cavity, said drive fluid applying a force on a portion of an outer wall of said heart.

51. The process as recited in claim 50, wherein said force on said portion of said outer wall of said heart is variable with respect to time.

52. The process as recited in claim 51, wherein said force on said portion of said outer wall of said heart is periodically variable with respect to time.

53. The process as recited in claim 52, wherein said force on said portion of said outer wall of said heart is varied synchronously with the cardiac cycle of said heart.

54. The process as recited in claim 53, further comprising the step of causing said apparatus to change the timing of said force applied to said portion of said wall of said heart with respect to the timing of said cardiac cycle of said heart.

55. The process as recited in claim 52, further comprising the step of causing said apparatus to change the frequency of said periodically variable force applied to said portion of said wall of said heart.

56. The process as recited in claim 50, wherein said apparatus further comprises means for administering a therapeutic agent.

57. The process as recited in claim 34, further comprising the step of supporting said heart in providing circulation of blood for perfusion of an organ in said body.

58. A process for assisting in a body the function of a heart, comprising the steps of inducing in said heart a change in the extracellular matrix of said heart, wherein said extracellular matrix is changed from an ordered state to a relaxed state;

and inducing in said heart a reversal of said change in said extracellular matrix of said heart, wherein said extracellular matrix is changed from said relaxed state to said ordered state.

59. The process as recited in claim 58, further comprising the step of administering at least one therapeutic agent to said heart.

60. The process as recited in claim 58, further comprising the step of supporting said heart in providing circulation of blood for perfusion of an organ in said body.

61. A process for assisting in a body the function of a heart, comprising the steps of inducing in said heart a change in the extracellular matrix of said heart, wherein said extracellular matrix is changed from an ordered state to a relaxed state;

causing reverse remodeling of said heart to render said heart in an improved state; and

inducing in said heart a reversal of said change in said extracellular matrix of said heart, wherein said extracellular matrix is changed from said relaxed state to said ordered state.

62. The process as recited in claim 61, wherein said step of inducing said change in said extracellular matrix from said relaxed state to said ordered state further comprises the step of administering at least one therapeutic agent to said heart.

63. The process as recited in claim 62, wherein said at least one therapeutic agent is a tissue inhibitor of metalloproteinases.

64. The process as recited in claim 61, further comprising the step of supporting said heart in providing circulation of blood for perfusion of an organ in said body.

65. A process for assisting in a body the function of a heart using a ventricular assistance device, said process comprising the steps of:

a. sensing a parameter indicative of the onset of systole in the cardiac cycle;

b. initiating and providing systolic assistance by said ventricular assistance device to said heart after sensing said parameter indicative of said onset of systole;

c. repeating said step of sensing said parameter indicative of said onset of systole and said initiating systolic assistance by said ventricular assistance device for at least two cardiac cycles;

d. sensing a parameter indicative of the function of said heart; and

e. analyzing said parameter indicative of said function of said heart.

66. The process as recited in claim 65, wherein said parameter indicative of the onset of systole is the P wave of the electrocardiographic voltage of said heart.

67. The process as recited in claim 65, wherein said parameter indicative of the onset of systole is the Q wave of the electrocardiographic voltage of said heart.

68. The process as recited in claim 65, wherein said parameter indicative of the onset of systole is the R wave of the electrocardiographic voltage of said heart.

69. The process as recited in claim 65, wherein said initiating systolic assistance by said ventricular assistance device to said heart is performed simultaneously with said onset of said systole.

70. The process as recited in claim 65, wherein said initiating systolic assistance by said ventricular assistance device to said heart is performed prior to said onset of said systole.

71. The process as recited in claim 70, wherein said initiating systolic assistance by said ventricular assistance device to said heart is initiated between about 5 milliseconds and about 20 milliseconds prior to said onset of said systole.

72. The process as recited in claim 65, wherein said initiating systolic assistance by said ventricular assistance device to said heart is performed subsequent to said onset of said systole.

73. The process as recited in claim 72, wherein said initiating systolic assistance by said ventricular assistance device to said heart is initiated between about 5 milliseconds and about 20 milliseconds subsequent to said onset of said systole.

74. The process as recited in claim 65, wherein said parameter indicative of the function of said heart is a cellular level parameter.

75. The process as recited in claim 74, wherein said cellular level parameter is selected from the group of metabolic indicators consisting of heat shock proteins, cytokines, caspases, reactive oxygen species, nitric oxide, Janus kinase, protein kinase C and Src.

76. The process as recited in claim 65, wherein said parameter indicative of the function of said heart is a macroscopic level parameter.

77. The process as recited in claim 76, wherein said at least one macroscopic level parameter is the first derivative of blood pressure.

78. The process as recited in claim 65, wherein said steps of sensing said parameter indicative of said onset of systole in said cardiac cycle, initiating and providing said systolic assistance by said ventricular assistance device to said heart, said sensing a parameter indicative of said function of said heart, and said analyzing said parameter indicative of said function of said heart are performed repeatedly in multiple cycles.

79. The process as recited in claim 78, further comprising the step of causing a change in the duration of time between said sensing of said parameter indicative of said onset of systole in said cardiac cycle, and said initiating said systolic assistance by said ventricular assistance device to said heart.

80. The process as recited in claim 79, wherein said step of causing said change in said duration of time is performed according to an algorithm programmed in a control system that controls said ventricular assistance device.

81. The process as recited in claim 80, wherein said step of causing said change in said duration of time between said sensing of said parameter indicative of said onset of systole in said cardiac cycle, and said initiating said systolic assistance by said ventricular assistance device to said heart is performed according to said algorithm.

82. The process as recited in claim 78, wherein said process further comprises the step of administering at least one therapeutic agent to said heart.

83. The process as recited in claim 82, wherein said at least one therapeutic agent is selected from the group consisting of genetic material, select DNA fragments, pre-and post-transcription regulation factors, pharmacologic agents, cytokines, pro-inflammatory agents, anti-inflammatory agents, beta-blockade, and membrane stabilizing agents.

84. The process as recited in claim 82, wherein said at least one therapeutic agent is a matrix metallo-proteinase system promoter.

85. The process as recited in claim 82, wherein said at least one therapeutic agent is a tissue inhibitor of metalloproteinases.

86. The process as recited in claim 78, wherein said process is performed using a direct mechanical ventricular assistance apparatus comprising:

a. a cup-shaped shell having an exterior surface and an interior surface;

b. a liner having an outer surface, an upper edge joined to said interior surface of said cup-shaped shell, and a lower edge joined of said interior surface of said cup-shaped shell, thereby forming a cavity between said outer surface thereof and said interior surface of said shell;

c. a drive fluid cyclically interposed within said cavity; and

d. a first sensor measuring at least one parameter indicative of the function of said heart.

87. The process as recited in claim 86, wherein said at least one parameter is a cellular level parameter.

88. The process as recited in claim 86, wherein said at least one parameter is a macroscopic level parameter.

89. The process as recited in claim 86, wherein said apparatus further comprises means for administering a therapeutic agent.

90. The process as recited in claim 89, wherein said means for administering said therapeutic agent is said liner comprising said therapeutic agent.

91. The process as recited in claim 86, wherein during a part of said step of initiating and providing systolic assistance by said ventricular assistance device, the rate of change of pressure of said drive fluid is between about 1000 millimeters of mercury per second and about 5000 millimeters of mercury per second.

92. The process as recited in claim 65, further comprising the step of initiating and providing diastolic assistance by said ventricular assistance device to said heart after said step of initiating and providing systolic assistance by said ventricular assistance device.

93. An apparatus for assisting in a body the function of a heart the function of a heart, said apparatus comprising:

a. a cup-shaped shell having an exterior surface and an interior surface;

b. a liner having an outer surface, an upper edge joined to said interior surface of said cup-shaped shell, and a lower edge joined of said interior surface of said cup-shaped shell, thereby forming a cavity between said outer surface thereof and said interior surface of said shell;

c. a drive fluid cyclically interposed within said cavity; and

d. at least one sensor measuring at least one macroscopic parameter indicative of said function of said heart.

94. The apparatus as recited in claim 93, further comprising at least one sensor measuring at least one cellular level parameter indicative of said function of said heart.

95. The apparatus as recited in claim 93, wherein said at least one sensor measuring at least one macroscopic parameter comprises means for generating ultrasonic energy, and means for receiving ultrasonic energy.

96. The apparatus as recited in claim 95, further comprising means for determining at least one dimensional value of said heart.

97. The apparatus as recited in claim 95, further comprising means for determining at least one structural characteristic of said heart.

98. The apparatus as recited in claim 95, further comprising means for producing an image from ultrasonic energy received by said means for receiving ultrasonic energy.

99. The apparatus as recited in claim 93, wherein said at least one sensor measuring at least one macroscopic parameter is an electrophysiological sensor.

100. The apparatus as recited in claim 99, wherein said electrophysiological sensor is disposed on said interior surface of said cup shaped shell.

101. The apparatus as recited in claim 99, wherein said cup-shaped shell further comprises a plurality of electrophysiological sensors.

102. The apparatus as recited in claim 101, wherein said plurality of electrophysiological sensors is disposed on said interior surface of said shell.

103. The apparatus as recited in claim 99, wherein said liner further comprises a plurality of electrophysiological sensors.

104. The apparatus as recited in claim 100, wherein said at least one sensor measuring at least one macroscopic parameter is a pressure sensor.

105. The apparatus as recited in claim 104, wherein said at least one pressure sensor is disposed within said cavity.

106. The apparatus as recited in claim 93, wherein said at least one sensor measuring at least one macroscopic parameter is a temperature sensor.

107. The apparatus as recited in claim 93, further comprising means for administering a therapeutic agent.

108. The process as recited in claim 107, wherein said means for administering said therapeutic agent is said liner comprising said therapeutic agent.

109. The apparatus as recited in claim 107, further comprising a seal, wherein said seal is impregnated with said therapeutic agent.

110. The apparatus as recited in claim 107, further comprising a seal having a cavity, wherein said therapeutic agent is delivered from said cavity.

111. The process as recited in claim 107, wherein said means for administering said therapeutic agent comprises at least one hollow microneedle in communication with the tissue of said heart.

112. An apparatus for assisting in a body the function of a heart the function of a heart, said apparatus comprising:

a. a cup-shaped shell having an exterior surface and an interior surface;

b. a liner having an outer surface, an upper edge joined to said interior surface of said cup-shaped shell, and a lower edge joined of said interior surface of said cup-shaped shell, thereby forming a cavity between said outer surface thereof and said interior surface of said shell;

c. a drive fluid cyclically interposed within said cavity;

d. at least one sensor measuring at least one cellular level parameter indicative of said function of said heart.

113. The apparatus as recited in claim 112, further comprising at least one sensor measuring at least one macroscopic level parameter indicative of said function of said heart.