Urinary stone edge detection for laser lithotripsy
AssigneeLumenis Ltd.
InventorMajd Sleem
Life of this patent
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Abstract
Described herein are laser emitting medical devices and techniques implementable by laser emitting medical devices to distinguish between targeted and non-targeted objects based on fluorescence reflected from an object responsive to incidence of laser beam on the object. The disclosure provides to determine an average of the fluorescence over a number of samples and to determine whether the object is a targeted or non-targeted object based on the average.
Claims20
A surgical laser system, comprising:
- a therapeutic laser source configured to generate a therapeutic laser beam;
- an interrogation sub-system comprising:
- an interrogation laser source configured to generate an interrogation laser beam,
- a light detector, and
- a beam splitter;
- optics configured to condition the therapeutic laser beam and the interrogation laser beam and couple the therapeutic laser beam and the interrogation laser beam to an optical fiber;
- a processor coupled to the light detector;
- and
- memory coupled to the processor, the memory comprising instructions that when executed cause the processor to:
- receive, from the light detector, electrical signals comprising indications of a fluorescence of reflected light,
- derive an average of the fluorescence over the last N samples of the electrical signals,
- determine whether the average of the fluorescence over the last N samples is greater than or greater than or equal to a threshold value, and
- send, responsive to the determination, a control signal to the therapeutic laser source,
- wherein the reflected light is light reflected from an object responsive to incidence of the interrogation laser beam on the object.
At least one machine readable storage devices storing instructions that when executed by a processor of a surgical laser system cause the surgical laser system to:
- receive, from a light detector, electrical signals comprising indications of a fluorescence of reflected light,
- derive an average of the fluorescence over the last N samples of the electrical signals,
- determine whether the average of the fluorescence over the last N samples is greater than or greater than or equal to a threshold value, and
- send, responsive to the determination, a control signal to a therapeutic laser source of the surgical laser system,
- wherein the reflected light is light reflected from an object responsive to incidence of an interrogation laser beam, generated by the surgical laser system, on the object.
A computer implemented method, comprising:
- receiving, at a processor, electrical signals generated by a light detector, the electrical signals comprising indications of a fluorescence of reflected light received at the light detector;
- deriving an average of the fluorescence over the last N samples of the electrical signals;
- determining whether the average of the fluorescence over the last N samples is greater than or greater than or equal to a threshold value;
- and
- sending, responsive to the determination, a control signal to a therapeutic laser source.
Dependencies are inferred from the claim text.