Method for providing an oxygen bearing liquid to a blood vessel for the performance of a medical procedure
First Claim
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1. A method for obtaining access to a site in a blood vessel for the performance of a medical procedure, the method comprising the steps of:
- (a) temporarily occluding the blood vessel by introducing therein, upstream of the site, removable flow occluding means;
(b) introducing downstream of the flow occluding means a physiologically compatible liquid, from an external source, bearing sufficient available oxygen to maintain the viability of tissue downstream of the flow obstruction means while the blood vessel is occluded; and
(c) positioning operative means adjacent the site for performing the medical procedure.
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Abstract
A method for providing an oxygen bearing liquid to a blood vessel during the performance of a medical procedure is disclosed. In one preferred embodiment the blood flow is temporarily occluded, a substantially clear oxygen bearing liquid is introduced into the blood vessel and the inside of the blood vessel is inspected through a viewing system and treated with laser irradiation.
254 Citations
30 Claims
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1. A method for obtaining access to a site in a blood vessel for the performance of a medical procedure, the method comprising the steps of:
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(a) temporarily occluding the blood vessel by introducing therein, upstream of the site, removable flow occluding means; (b) introducing downstream of the flow occluding means a physiologically compatible liquid, from an external source, bearing sufficient available oxygen to maintain the viability of tissue downstream of the flow obstruction means while the blood vessel is occluded; and (c) positioning operative means adjacent the site for performing the medical procedure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of treating a site in a blood vessel with laser irradiation, the method comprising the steps of:
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(a) positioning within the blood vessel, proximate the site, the distal end of a conduit carrying a viewing system and means for emitting laser irradiation from the distal end of the conduit; (b) temporarily occluding the blood vessel upstream of the of the site; (c) introducing downstream of the produced occlusion and about the site a physiologically compatible liquid, from an external source, bearing sufficient available oxygen to maintain the viability of tissue downstream of the occlusion while the blood vessel is occluded; (d) positioning the distal end of the conduit adjacent the site such that the site can be viewed through the viewing system when the physiologically compatible oxygen bearing fluid is substantially clear; and (e) transmitting laser light through the conduit to subject the site with laser irradiation when the physiologically compatible oxygen bearing is sufficiently transparent to laser energy. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification