Granted Patent B2

US 12,502,195 · App. 18/752,516 · Granted Dec 23, 2025

Inventors: Nikolai Aljuri (Hillsborough, CA); Edward Karpman (Los Altos, CA); Chris Danek (San Carlos, CA)

Assignee: PROCEPT BioRobotics Corporation

A61B17/3203A61B2017/00154A61B2017/00172A61B2017/00274A61B2017/32032A61B2017/32035A61B2018/00547

Abstract

Claims (16)

1 . An apparatus to treat tissue, the apparatus comprising,

a pump;

a nozzle coupled to the pump, the nozzle sized for immersion in a liquid and configured to generate a plurality of pulsatile shear waves to treat the tissue; and

a circuitry coupled to the pump and configured to control fluid flow through the nozzle to treat the tissue with the plurality of pulsatile shear waves.

2 . The apparatus of claim 1 , wherein the pump provides a flow rate through the nozzle and the nozzle is configured to provide the plurality of pulsatile shear waves to a cut profile at a distance from the nozzle.

3 . The apparatus of claim 1 , wherein the nozzle is configured to be arranged with the tissue at a distance no more than a threshold transition distance from the tissue.

4 . The apparatus of claim 1 , wherein the nozzle is configured to be arranged with the tissue at a distance greater than a threshold transition distance from the tissue.

5 . The apparatus of claim 1 , wherein the circuitry comprises a processor configured to treat the tissue with the nozzle, wherein the processor is configured to cause removal of the tissue according to a tissue removal profile with the nozzle positioned at a distance no more than a threshold transition distance for selective tissue removal from a tissue removal profile.

6 . The apparatus of claim 2 , wherein the pump comprises a piston configured to deliver a plurality of pump pulses and wherein the nozzle and a flow rate of the pump are configured to provide a plurality of pump pulses and each of the plurality of pump pulses provides a plurality of shedding pulses.

7 . The apparatus of claim 1 , wherein each of a plurality of pump pulses is configured to generate the plurality of pulsatile shear waves.

8 . The apparatus of claim 1 , wherein the nozzle is configured to be arranged to be directed toward the tissue to be treated, wherein jet hydrodynamic parameters are configured to allow mechanical disruption of the tissue.

9 . The apparatus of claim 8 , wherein the jet hydrodynamic parameters comprise one or more of a fluid jet velocity or a shear stress field.

10 . The apparatus of claim 1 , wherein jet hydrodynamic parameters are configured to generate the plurality of pulsatile shear waves.

11 . The apparatus of claim 1 , wherein the plurality of pulsatile shear waves is configured to interact with an affected location of the tissue and promotes hemostasis at the affected location.

12 . The apparatus of claim 1 , wherein the circuitry is configured to provide a jet, wherein the jet comprises a substantially abrasive jet in order to remove vessels and non-vascular tissue at similar rates.

13 . The apparatus of claim 1 , wherein the plurality of pulsatile shear waves is configured to remove the tissue along a removal profile and decrease bleeding at a distance from the removal profile.

Assignments (1)

Continuity (7)

References Cited (243)