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US 2026/0157768 A1Published application
Medical system and method of use
OwnerJohn H. SHADDUCKinventor
Life of this patent
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Abstract
Systems and methods for resecting prostate tissue and applying thermal energy to prostate tissue before, during or after resection to prevent bleeding or coagulate bleeding in surfaces of prostate tissue in benign prostatic hyperplasia treatments.
Claims26
A method of liquid jet cutting of soft tissue, comprising:
- providing a working end of a shaft of a tissue cutting device with a first member having a first flow channel configured to propagate a first liquid jet stream outwardly in a first vector and a second member having a second flow channel configured to propagate a second liquid jet stream outwardly in a second vector;
- positioning the working end in an interface with a targeted tissue;
- and
- propagating the first liquid jet stream and the second liquid jet stream outwardly at selected pressure parameters that provide kinetic energy in the first liquid jet stream and the second liquid jet stream to cut the targeted tissue;
- wherein the first vector and the second vector converge at an outward point of convergence to thereby induce turbulence adapted to dissipate the kinetic energy of the first liquid jet stream and the second liquid jet stream to control a cutting depth;
- and
- adjusting the outward point of convergence during an interval of propagating the first liquid jet stream and the second liquid jet stream.
4 more elements
(canceled)
14-16. (canceled)
A medical system for liquid jet cutting and cauterization of soft tissue, comprising:
- a housing coupled to an elongate shaft configured for trans-urethral introduction to a patient's prostatic urethra;
- a working end of the elongate shaft including a first jet orifice configured to propagate a first liquid jet stream outwardly in a first vector and a second jet orifice configured to propagate a second liquid jet stream outwardly in a second vector wherein the first vector and the second vector converge at a point of convergence outward from an axis of the working end;
- a controller coupled to a motor drive configured to adjust an axial spacing between the first jet orifice and the second jet orifice;
- and
- a vapor jet outlet in the working end configured to propagate a vapor jet stream outwardly from the working end.
2 more elements
A method of liquid jet cutting of soft tissue, comprising:
- providing a working end of a shaft of a tissue cutting device with a first member having a first flow channel configured to propagate a first liquid jet stream outwardly in a first vector and a second member having a second flow channel configured to propagate a second liquid jet stream outwardly in a second vector;
- positioning the working end in an interface with a targeted tissue;
- and
- propagating the first liquid jet stream and the second liquid jet stream outwardly at selected pressure parameters that provide kinetic energy in the first liquid jet stream and the second liquid jet stream to cut the targeted tissue;
- wherein the first vector and the second vector converge at an outward point of convergence to thereby induce turbulence adapted to dissipate the kinetic energy of the first liquid jet stream and the second liquid jet stream to control a cutting depth;
- and
- propagating a vapor jet from the working end wherein a subsequent vapor-to-liquid phase transition applies cauterizing energy to the targeted tissue.
4 more elements
Dependencies are inferred from the claim text.