Systems and methods for tissue treatment

1. An ultrasonic energy delivery device configured to deliver ultrasonic energy to a musculoskeletal tissue site, the device comprising:

a horn configured to receive energy generated by a transducer and a precipitation-hardened stainless steel needle;

wherein said horn and said needle are brazed together.

2. The device of claim 1 further comprising a processor configured to activate the transducer, wherein the processor includes stored instructions that when executed cause the device to deliver ultrasonic energy at a frequency selected to debride the musculoskeletal tissue.

3. The device of claim 1 , wherein the horn includes a tip portion that has an inwardly slanted portion configured to receive brazing material.

4. The system of claim 1 , wherein the horn and needle are fixed together.

5. A system configured to deliver ultrasonic energy to a musculoskeletal tissue site, the system comprising:

a memory device containing instructions;

a processor in communication with the memory device;

a delivery device comprising:

a horn; and

a precipitation-hardened stainless steel needle;

wherein said horn and said needle are brazed together; and

wherein execution of the instructions by the processor causes a transducer to generate ultrasonic energy at a pre-determined frequency suitable for debriding musculoskeletal tissue.

6. The system of claim 5 further comprising a fluid source, wherein the delivery device further comprises a fluid delivery conduit for delivering fluid from the fluid source to the musculoskeletal tissue site.

7. The system of claim 5 , wherein the delivery device further comprises an aspiration conduit configured to remove detritus from the musculoskeletal site.

8. The system of claim 5 , wherein the delivery device includes a housing having a clear portion.

9. The system of claim 5 , wherein the stainless steel needle is a fully hardened hypodermic needle.

10. The system of claim 5 , wherein the horn and needle are fixed together.