Medical systems and methods for density assessment using ultrasound
First Claim
Patent Images
1. A method for determining a state of blood clot removal from a vessel of a patient multiple times during a surgical procedure based on density assessment, the method comprising the steps of:
- a) providing an elongated guidewire including a sensor;
b) inserting the guidewire through vasculature of the patient and adjacent a blood clot;
c) inserting a device to remove the blood clot, into a region along a length of the blood clot;
d) either before or after step (c), measuring density of the blood clot with the sensor to obtain a first density value utilizing ultrasound signals and determining a first length of the blood clot with the sensor utilizing ultrasound signals, wherein the ultrasound signals are sent from within the vessel;
e) after steps c) and d), using the device to remove at least a portion of the blood clot;
f) after step e measuring the density of the blood clot with the sensor utilizing ultrasound to obtain a second density value for comparison to the first density value to determine the extent of removal of the blood clot from the vessel;
g) using the sensor to ultrasonically determine a second length of the blood clot after step e) to determine a decrease in a length of the blood clot; and
h) simultaneously displaying the first density value, the second density value, the first length, and the second length.
1 Assignment
0 Petitions
Accused Products
Abstract
A medical system and method for density assessment utilizing ultrasound. The system includes a guidewire configured and dimensioned for insertion in the vessel of the patient, a sensor positioned at the distal portion of the elongated member and a connector connecting the elongated member to an indicator, the sensor determining the density and the indicator providing an indication of the determined density.
73 Citations
19 Claims
-
1. A method for determining a state of blood clot removal from a vessel of a patient multiple times during a surgical procedure based on density assessment, the method comprising the steps of:
-
a) providing an elongated guidewire including a sensor; b) inserting the guidewire through vasculature of the patient and adjacent a blood clot; c) inserting a device to remove the blood clot, into a region along a length of the blood clot; d) either before or after step (c), measuring density of the blood clot with the sensor to obtain a first density value utilizing ultrasound signals and determining a first length of the blood clot with the sensor utilizing ultrasound signals, wherein the ultrasound signals are sent from within the vessel; e) after steps c) and d), using the device to remove at least a portion of the blood clot; f) after step e measuring the density of the blood clot with the sensor utilizing ultrasound to obtain a second density value for comparison to the first density value to determine the extent of removal of the blood clot from the vessel; g) using the sensor to ultrasonically determine a second length of the blood clot after step e) to determine a decrease in a length of the blood clot; and h) simultaneously displaying the first density value, the second density value, the first length, and the second length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for determining a state of blood clot removal from a vessel of a patient multiple times during a surgical procedure based on density assessment comprising the steps of:
-
a) providing an elongated guidewire including a pH sensor and density sensor; b) inserting the elongated guidewire through vasculature of the patient and adjacent a blood clot, into a region along a length of the blood clot, c) inserting a device to remove the blood clot, into a region along a length of the blood clot; d) either before or after step (c), measuring density of the blood clot with the density sensor to obtain a first density value utilizing ultrasound signals, wherein the ultrasound signals are sent from within the vessel; e) after steps c) and d), using the device to remove at least a portion of the blood clot; f) after step e) measuring the density of the blood clot with the density sensor utilizing ultrasound to obtain a second density value for comparison to the first density value to determine the extent of removal of the blood clot from the vessel; g) simultaneously displaying the first density value and the second density value; and h) measuring pH level of the blood with the pH sensor and indicating to a user the pH level of the blood to enable the user to determine a pH level of the vessel downstream of the blood clot for; (i) a determination of a clot treatment approach to remove the blood clot; and (ii) a determination whether slow reperfusion during and/or after removal of the blood clot is warranted. - View Dependent Claims (14, 15, 16, 17, 18, 19)
-
Specification