Dual mode acoustic lithotripsy transducer

A method for acoustic lithotripsy of a lithotripsy target located internally within a patient, the method comprising:

• determining a lithotripsy target composition by receiving, from one or more optical sensors, a target characteristic input signal indicating the lithotripsy target composition;
• generating a driver control signal based on the determined lithotripsy target composition;
• routing the driver control signal to at least one of a first vibrator or a second vibrator;
• and
• causing an impact member coupled to at least one of the first vibrator or the second vibrator to deliver energy to the lithotripsy target using vibration from at least one of the first vibrator or the second vibrator, wherein the first and second vibrators respectively vibrate at different corresponding first and second vibration frequencies and with corresponding wave types that are distinct from each other so that the at least one of the first vibrator or the second vibrator selectively emits its respective wave type and frequency based on the lithotripsy target composition determined using the target characteristic input signal, wherein the first vibrator emits its respective wave type toward the lithotripsy target when the lithotripsy target composition meets a first lithotripsy target composition characteristic and the second vibrator emits its respective wave type when the lithotripsy target composition meets a second lithotripsy target composition characteristic.

An acoustic transducer comprising:

• a first vibrator, configured to vibrate at a first vibration frequency and a first wave type;
• a second vibrator separable from the first vibrator, the second vibrator configured to vibrate at a second vibration frequency that is different from the first vibration frequency and with a second wave type that is distinct from the first wave type, wherein the first vibrator and the second vibrator are configured to be selectively coupled to a lithotripsy target based on a lithotripsy target composition determined from a target characteristic input signal received from one or more optical sensors;
• an impact member coupled to at least one of the first vibrator or the second vibrator;
• an acoustic waveguide coupled to at least one of the impact member or the first vibrator or the second vibrator;
• a tube partially connecting the first vibrator to the second vibrator and maintaining a seal therebetween;
• and
• a connecting member configured to engage the first vibrator to the second vibrator, wherein the first vibrator emits its respective wave type to the lithotripsy target when the lithotripsy target composition meets a first lithotripsy target composition characteristic and the second vibrator emits its respective wave type when the lithotripsy target composition meets a second lithotripsy target composition characteristic.