Granted Patent
B2
US 12,458,379 · App. 15/878,269 · Granted Nov 4, 2025
Method for the treatment of thromboembolism
Assignee:
BOSTON SCIENTIFIC SCIMED, INC.
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Abstract
A method for the treatment of thromboembolism comprising administering a thrombolytic agent directly to the thromboembolism in the presence of ultrasound. The total dose of thrombolytic agent administered is between 1 and 12 mg and the time over which the total dose is delivered is less than 15 hours.
Claims (26)
1 . A method for a treatment of a thromboembolism comprising administering to a human subject a thrombolytic agent directly to the thromboembolism in a presence of ultrasound, wherein a total dose of the thrombolytic agent administered is between 2 and 6 mg and the total dose of thrombolytic agent is delivered over a period of time, wherein the period of time is a minimum of 30 minutes and a maximum of 6 hours.
2 . The method according to claim 1 wherein the total dose of the thrombolytic agent administered is between 2 and 4 mg.
3 . The method according to claim 1 wherein the total dose of the thrombolytic agent administered is 2 mg.
4 . The method according to claim 1 wherein the thrombolytic agent is infused at a rate of 2 mg/hour.
5 . The method according to claim 1 wherein the thrombolytic agent is recombinant tissue plasminogen activator (r-tPA) or urokinase.
6 . The method according to claim 1 wherein the ultrasound is provided at a frequency of between 2-3 MHz.
7 . The method according to claim 6 wherein a maximum pulse power of the ultrasound is 50 W.
8 . The method according to claim 1 further comprising:
providing a catheter with a fluid delivery lumen having at least one outlet and a plurality of ultrasound radiating members, said ultrasound radiating members arranged in a region of the fluid outlet and being connected to an electrical power source which is located externally to the catheter and arranged to drive the ultrasound radiating members;
positioning the catheter into or adjacent the thromboembolism;
activating the plurality of ultrasound radiating members to produce ultrasound; and
introducing the thrombolytic agent into the fluid delivery lumen such that the thrombolytic agent flows through the fluid deliver lumen and through the outlet;
wherein the total dose of the thrombolytic agent is administered through the catheter and the total dose of the thrombolytic agent is administered at a rate of between 1 mg/hour and 2 mg/hour.
9 . The method according to claim 8 wherein the total dose of thrombolytic agent administered through the catheter is between 1 mg and 6 mg and the total dose of thrombolytic agent is administered at a rate of 1 mg/hour.
10 . The method according to claim 8 wherein the total dose of thrombolytic agent administered through the catheter is between 2 mg and 4 mg and the total dose of thrombolytic agent is administered at a rate of 1 mg/hour.
11 . The method according to claim 8 wherein the total dose of thrombolytic agent administered through the catheter is between 2 mg and 4 mg and the total dose of thrombolytic agent is administered at a rate of 2 mg/hour.
12 . The method according to claim 8 wherein the thrombolytic agent is recombinant tissue plasminogen activator (r-tPA) or urokinase.
13 . The method according to claim 8 wherein the ultrasound is provided at a frequency of between 2-3 MHz.
14 . The method according to claim 8 wherein a maximum pulse power of the ultrasound is 50 W.
15 . The method according to claim 8 wherein the catheter comprises an inner core into which the ultrasound radiating members may be inserted and which is independent of the fluid delivery lumen, through which the thrombolytic agent is administered at 2 mg/hour to give a total treatment time which is less than 6 hours.
16 . The method according to claim 15 wherein the total treatment time is 4 hours.
17 . The method according to claim 15 wherein the total treatment time is 2 hours.
18 . The method according to claim 8 wherein the thrombolytic agent is administered through 2 catheters simultaneously.
19 . The method according to claim 1 , wherein the thrombolytic agent is delivered at a constant rate for at least a first hour of the period of time.
20 . A method for a treatment of a thromboembolism comprising administering to a human subject a thrombolytic agent directly to the thromboembolism in a presence of ultrasound, wherein a total dose of the thrombolytic agent administered is between 1 and 12 mg and the total dose of thrombolytic agent is delivered over a period of time, wherein the period of time is a minimum of 30 minutes and a maximum of 6 hours; and
wherein the thrombolytic agent is infused at rate of 1 mg/hour.
Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Mar 4, 2022
From: EKOS LLC
To: BOSTON SCIENTIFIC SCIMED, INC.
Reel/Frame 059847/0748 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded May 22, 2018
From: ALLEN, LYNN GOURLEY
To: EKOS CORPORATION
Reel/Frame 045876/0595 →
Continuity (2)
Provisional Application
62449966
· Jan 24, 2017
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