Device for treating growing, dilated or malformed blood vessels and method for treating biological material
First Claim
1. A device for treating growing, dilated or malformed blood vessels with a laser emitting a laser beam in a wavelength range from 750 mn to 850 nm and a specific power, the device comprising a measuring unit measuring the concentration of an exogenous chromophore, introduced into the blood stream, which absorbs the laser beam in the blood vessel to be treated, and a control unit controlling the power of the laser beam in a contrary sense to the measured concentration.
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Accused Products
Abstract
In a device for treating blood vessels with a laser, the laser provides a beam in a wavelength range from 750 to 850 nm, preferably 805 nm. The device has a measuring unit which measures the concentration of a chromophore (preferably indocyanine green) administered to the patient in the patient'"'"'s blood vessels. The device further comprises a control unit which controls the power of the laser in a contrary sense to the measured concentration.
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Citations
40 Claims
- 1. A device for treating growing, dilated or malformed blood vessels with a laser emitting a laser beam in a wavelength range from 750 mn to 850 nm and a specific power, the device comprising a measuring unit measuring the concentration of an exogenous chromophore, introduced into the blood stream, which absorbs the laser beam in the blood vessel to be treated, and a control unit controlling the power of the laser beam in a contrary sense to the measured concentration.
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35. A method for treating biological material with a light beam having a wavelength in the range of 750 nm to 850 nm, the method comprising the steps of:
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a) introducing into the biological material a chromophore which absorbs light in the range of 750 nm to 850 nm, b) directing a probe light beam having a wavelength in the range of 750 nm to 850 nm onto said biological material, a fraction of said probe light beam being reflected by said biological material, c) measuring the intensity of said reflected fraction of said probe light beam, d) directing said light beam onto said biological material and controlling its power in accordance with the measured intensity of said reflected fraction of said probe light beam. - View Dependent Claims (36)
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37. A device for treating growing, dilated or malformed blood vessels with a laser, the device comprising a measuring unit measuring the concentration of an exogenous chromophore, introduced into the blood stream, which absorbs the laser beam in the blood vessel to be treated, and a control unit controlling the power of the laser beam in a contrary sense to the measured concentration.
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38. A method for treating biological material with a laser beam, the method comprising the steps of:
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introducing into the biological material a chromophore which absorbs the laser beam;
directing a probe light beam onto said biological material, a fraction of said probe light beam being reflected by said biological material;
measuring the intensity of said reflected fraction of said probe light beam; and
directing said light beam onto said biological material and controlling its power in accordance with the measured intensity of said reflected fraction of said probe light beam.
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39. A device for treating growing, dilated or malformed blood vessels with a laser, the device comprising:
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a measuring unit measuring the concentration of an exogenous chromophore, introduced into the blood stream, which absorbs the laser beam in the blood vessel to be treated; and
a control unit controlling the power of the laser beam in an inverse proportion to the measured concentration of the exogenous chromophore.
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40. A device for treating growing, dilated or malformed blood vessels with a laser, the device comprising:
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a measuring unit measuring the concentration of an exogenous chromophore which absorbs the laser beam in the blood vessel to be treated; and
a control unit controlling the power of the laser beam in a contrary sense to the measured concentration, wherein the monitor provides a false color display of the chromophore concentration.
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Specification