Tissue resection and treatment with shedding pulses
AssigneePROCEPT BioRobotics Corporation
InventorsNikolai Aljuri, Surag Mantri, Luis Baez, George Surjan, Michael W. Sasnett, Jonathan Foote
Life of this patent
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Abstract
A fluid stream is directed toward tissue to generate a plurality of shedding clouds. The fluid stream can be scanned such that the plurality of shedding clouds arrive a different overlapping locations. Each of the plurality of shedding clouds can remove a portion of the tissue. In many embodiments, an apparatus to ablate tissue comprises a source of pressurized fluid, and a nozzle coupled to the source of pressurized fluid to release a fluid stream, in which the fluid stream generates a plurality of shedding clouds.
Claims11
A method of ablating tissue with a fluid stream, the method comprising:
- directing the fluid stream from a nozzle toward the tissue to generate a plurality of shedding clouds with a characteristic shedding frequency, cloud length, and velocity, wherein the nozzle comprises a Strouhal number within a range of 0.02 to 0.03 and is sized to fit within a probe having a diameter within a range of 1 to 10 mm;
- and
- scanning the fluid stream along an axis with a translational velocity and an angle corresponding to a rotational velocity such that the plurality of shedding clouds arrives at different overlapping locations on the tissue;
- wherein the cloud length is related to the characteristic shedding frequency and velocity of the plurality of shedding clouds.
A method of ablating tissue with a fluid stream released from a nozzle, the method comprising:
- directing the fluid stream toward the tissue to generate a plurality of shedding clouds with a characteristic shedding frequency, cloud length, and velocity, wherein the nozzle comprises a Strouhal number within a range of 0.02 to 0.03 and is sized to fit within a probe having a diameter within a range of 1 to 10 mm;
- and
- scanning the fluid stream along an axis with a translational velocity and an angle corresponding to a rotational velocity such that the plurality of shedding clouds arrives at different overlapping locations on the tissue;
- wherein the fluid stream comprises a first liquid released into a second liquid to generate the plurality of shedding clouds;
- and
- wherein the cloud length is related to the characteristic shedding frequency and velocity of the plurality of shedding clouds.
A method of ablating tissue with a fluid stream released from a nozzle, the method comprising:
- directing the fluid stream toward the tissue to generate a plurality of shedding clouds with a characteristic shedding frequency, cloud length, and velocity, wherein the nozzle comprises a Strouhal number within a range of 0.02 to 0.03 and is sized to fit within a probe having a diameter within a range of 1 to 10 mm;
- and
- scanning the fluid stream along an axis with a translational velocity and an angle corresponding to a rotational velocity such that the plurality of shedding clouds arrives at different overlapping locations on the tissue;
- wherein the scanning of the fluid stream is performed with one or more of a hand held probe or a probe coupled to a linkage;
- and
- wherein the cloud length is related to the characteristic shedding frequency and velocity of the plurality of shedding clouds.
Dependencies are inferred from the claim text.