Intraoperative myocardial device and stimulation procedure
First Claim
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1. A method for stimulating revascularization of myocardium tissue in the ventricular wall of a human heart comprising the steps of:
- providing optical fiber means having at least one distal end and at least one proximal end connected to a source of laser energy;
moving the optical fiber means forwardly through the epicardium of the heart and into the myocardium;
emitting laser energy from said distal end to form at least one stimulus injury within the myocardium of the heart to promote capillary growth and revascularization therein.
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Abstract
A method and device for causing angiogenesis in the heart including the formation of a pattern of stimulus pockets or zones and channels. Laser energy is deliverable through one or more fiber optic elements at a controlled penetration depth and direction. The fiber element of the device is advanced incrementally within the myocardium. Laser bursts are triggered at intervals to create stimulus zones and/or channels.
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Citations
41 Claims
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1. A method for stimulating revascularization of myocardium tissue in the ventricular wall of a human heart comprising the steps of:
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providing optical fiber means having at least one distal end and at least one proximal end connected to a source of laser energy;
moving the optical fiber means forwardly through the epicardium of the heart and into the myocardium;
emitting laser energy from said distal end to form at least one stimulus injury within the myocardium of the heart to promote capillary growth and revascularization therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for stimulating revascularization of myocardium tissue in the ventricle wall of a human heart comprising the steps of:
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providing an optical fiber means having a distal end and a proximal end connected to a source of laser energy;
moving said fiber means forwardly through the epicardium of the heart and positioning said distal end at a first position within the myocardium;
emitting a burst of relatively low level of laser energy from said distal end in a radial direction from the longitudinal axis of the fiber means and for a limited distance to form at least one zone of partially ablated tissue within the myocardium which stimulates capillary growth and revascularization therein;
moving said fiber means from said first position to a second position and emitting another burst of relatively low level laser energy to form an additional zone of ablated tissue within the tissue; and
withdrawing said optical fiber means from the heart and moving it laterally to another location to facilitate a repetition of the method steps. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A device for revascularization of the myocardium tissue in the ventricle wall of a human heart, comprising:
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a body member;
a neck member connected to said body member;
a flared stop member on the distal end of said neck member;
an optical fiber means having a distal tip and a proximal end connectable to a source of laser energy, said fiber means extending through said body member, said neck member and said stop member;
means on said body member for moving said fiber means axially by increments to stop and position said distal tip at preselected positions relative to said stop member; and
means for triggering the source of laser energy at each said position of said distal tip to thereby create a zone of partially ablated tissue in the myocardium that stimulates revascularization of the tissue. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification