Method of ultrasonic Doppler monitoring of blood flow in a blood vessel
First Claim
1. A method of ultrasonic Doppler monitoring of blood flow in a patient'"'"'s blood vessel comprisingproviding an ultrasonic transducer operatively associated with ultrasonic processor means by an electrically conductive wire,securing the ultrasonic transducer to a strip of biologically inert or absorbable material,wrapping said strip in contacting surrounding relationship with the exterior surface of said blood vessel to establish a cuff,securing said cuff in said surrounding relationship,employing said ultrasonic transducer-wire assembly in a Doppler mode to monitor blood flow within said blood vessel, andafter completion of said monitoring removing said ultrasonic transducer and said wire but not said cuff.
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Abstract
A method of employing ultrasonic Doppler monitoring of blood flow in a patient'"'"'s blood vessel includes, providing an ultrasonic transducer operatively associated with an ultrasonic processor by connection through an electrically conductive wire. The ultrasonic transducer-conducer wire assembly is secured to a strip of biologically inert or absorbable material, which is subsequently wrapped into contacting surrounding relationship with the exterior surface of the blood vessel and secured in such position to establish a cuff. The ultrasonic transducer-wire assembly is employed in a Doppler mode to monitor blood flow within the blood vessel. After completion of monitoring the ultrasonic transducer-wire assembly, but not the cuff are removed from the patient. The monitoring cuff is preferably positioned downstream, with respect to the direction of blood flow, of an anastomosis in the blood vessel.
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Citations
17 Claims
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1. A method of ultrasonic Doppler monitoring of blood flow in a patient'"'"'s blood vessel comprising
providing an ultrasonic transducer operatively associated with ultrasonic processor means by an electrically conductive wire, securing the ultrasonic transducer to a strip of biologically inert or absorbable material, wrapping said strip in contacting surrounding relationship with the exterior surface of said blood vessel to establish a cuff, securing said cuff in said surrounding relationship, employing said ultrasonic transducer-wire assembly in a Doppler mode to monitor blood flow within said blood vessel, and after completion of said monitoring removing said ultrasonic transducer and said wire but not said cuff.
Specification