1.-20. (canceled)
21. An ultrasonic energy delivery device configured to deliver ultrasonic energy to a musculoskeletal tissue site, the device comprising:
a transducer configured to generate ultrasonic energy;
a horn configured to receive energy generated by the transducer; and
a work-hardened stainless steel needle brazed to the horn.
22. The device of claim 21 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.
23. The device of claim 21, wherein the stainless steel needle is a fully hardened hypodermic needle.
24. The device of claim 21, wherein the stainless steel needle is brazed to the horn using an alloy.
25. The device of claim 21, wherein the stainless steel needle is brazed to the horn using an acid flux.
26. The device of claim 21, wherein the stainless steel needle is brazed to the horn using an inert gas.
27. The device of claim 21, wherein the horn includes a tip portion that has an inwardly slanted portion configured to receive brazing material.
28. The device of claim 21, wherein the horn comprises stainless steel.
29. The device of claim 21, wherein the stainless steel needle brazed to the horn is not annealed during the brazing process.
30. 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 transducer;
a horn; and
a work-hardened stainless steel needle brazed to the horn;
wherein execution of the instructions by the processor causes the transducer to generate ultrasonic energy at a pre-determined frequency suitable for debriding musculoskeletal tissue.
31. The system of claim 30 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.
32. The system of claim 30, wherein the delivery device further comprises an aspiration conduit configured to remove detritus from the musculoskeletal site.
33. The system of claim 30, wherein the needle is brazed to the horn using an alloy.
34. The system of claim 30, wherein the needle is brazed to the horn using an acid flux.
35. The system of claim 30, wherein the needle is brazed to the horn using an inert gas.
36. The system of claim 30, wherein the delivery device includes a housing having a clear portion.
37. The system of claim 30, wherein the stainless steel needle is a fully hardened hypodermic needle.
38. The system of claim 30, wherein the stainless steel horn has a tip portion which has an inwardly slanted portion which is configured to receive brazing material.
39. The system of claim 30, wherein the stainless steel needle brazed to the stainless steel horn is not annealed during the brazing process.
40. A method of operating a delivery device, the method comprising:
generating ultrasonic energy;
delivering, by a work-hardened stainless steel needle brazed to a horn, the ultrasonic energy to a musculoskeletal tissue site.
41. The method of claim 40, wherein the stainless steel needle is a fully hardened hypodermic needle.
42. The method of claim 40 further comprising delivering fluid to the musculoskeletal tissue site.
43. The method of claim 40 further comprising removing detritus from the musculoskeletal tissue site.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A machine to lock truss towers and their movable sleeve and truss section, by means of power comprising:
a length of truss tower with mounting frame configured in the same shape and dimensional size of the tower;
a power actuated locking mechanism, held into position by the truss tower with mounting;
a rolling or sliding sleeve for attachment of truss members arrayed about the centroid of the sleeve;
a hoisting system, consisting of a powered hoist to raise the sleeve block from a working height to a high trim position;
a control system with a power section, logic control section and human machine interface;
2. The truss tower with mounting frame of claim 1, comprising:
a truss tower module with vertical chords and connections compatible with the main tower;
said tower to be fitted with guide tracks or chords to engage the rollers or sliding guides same as adjacent sections of truss;
said tower section to be fitted with frames on two opposing vertical sides having holes in symmetrical rows and columns for the attachment of the lock mechanism;
same tower section to be fitted with the two clear bays, adjacent to former above, unencumbered for travel of the locking forks;
a gusset member to hold the numerous vertical chords square relative to each other and the lock mechanism;
said gusset member to allow passage of the lock mechanism drive machinery;
a number of structural frames positionable at locations in the two open bays at elevations above and below the lock mechanism, for the purpose of bracing the vertical chords from spread, collapse and twist;
3. The truss mounting of claim 1, wherein the mechanical means provides a fine gradient of adjustment for the mounting of the lock mechanism and subsequently the ultimate trim height of the sleeve and truss elements.
4. The lock mechanism of claim 1, wherein the mechanical means for locking the motion of the stage roof truss secures the sleeve block and truss tower element in such a fashion as to provide a load path to the tower base.
5. The lock mechanism of claim 1, wherein the mechanical means for locking the motion prevents the sleeve block from traveling upwards or downwards when locked.
6. The lock mechanism of claim 1, wherein the mechanical means for locking secures the sleeve block and truss load when locked off and the primary hoist is slack.
7. The lock mechanism of claim 1, wherein the mechanical means for locking the motion captivates the sleeve and resists the twisting action that would break the sleeve guide rollers from their tracks.
8. The lock mechanism of claim 1, wherein the structural means provides a load carrying capacity equivalent or superior to the load capacity of the tower.
9. The lock mechanism of claim 1, further comprising a manual operating system that does not require power for testing the mechanism during assembly and affords manual deployment without power for emergency operation if an electrical component fails.
10. The sleeve of claim 1, wherein said sleeve is fitted with receptacles for guiding the engagement and interlock with the locking forks and a target to activate the position sensors.
11. A power lock system for stage truss towers that is remotely operated whereby personnel are not required to climb the towers in order to install and operate.
12. The control system of claim 11, wherein the relative motion of the sleeve block in relationship to the lock mechanism activates sensors comprising:
a proximity limit indicating that the sleeve is in the low alignment position;
a proximity limit indicating that the sleeve is aligned for the activation of the locking mechanism;
a proximity limit indicating that the sleeve is in the high alignment position;
13. The control system of claim 11, wherein the lock mechanism provides remote feedback from the locking forks comprising:
a limit switch that indicates the forks are fully extended, preventing further extension and indicating that vertical travel is not possible;
a limit switch that indicates that the forks are fully retracted, preventing further retraction, and that vertical travel is possible;
14. The control system of claim 11, wherein the rules of logic differentiate between ambiguous conditions of intermediate limit switch states and provide operational status to the operator that the lock is moving or stalled between limits.
15. The control system of claim 11, wherein the rules of logic indicate upon approach the vertical position of the sleeve and retains and displays said information.
16. The control system of claim 11, wherein the rules of logic allow a bump movement of the vertical hoist for the chains to slack and tension while the forks are locked.
17. The control system of claim 11, wherein operational status of each sensor and control is displayed to the operator by means of illuminated operators, pilot lamps, textual and graphical screens.
18. A method for locking a ground supported truss with moving sleeves according to the invention such as the foregoing includes the steps of:
installing a truss tower with mounting into the vertical column of truss tower at the designated location;
positioning a power lock mechanism into the truss tower mounting at the exact location for high trim;
interconnecting the power and control cable, extending from the power lock mechanism, passing through the interior of the truss tower, and terminating at the control panel;
pivoting the tower from its horizontal position for assembly to its vertical position for operation;
interconnecting the operator pendant controller with the control panel and the electrical power source with the control panel;
hoisting the sleeve block and attached truss members to their high trim position by means of actuating the chain motor hoist;
engaging the low position indicator and subsequently the aligned position indicator;
commanding the extension of the locking forks into stirrup receptacles of the sleeve blocks until the fully extended limit halts motion;
lowering the hoist by bumping until the chains are slack for the purpose of parking the hoist onto the locks;
reversing previous operation by first raising the hoist until the alignment indicator is activated but not so far as the high indicator to be tripped;
commanding the retraction of the locking forks until the full retracted limit is activated, signaling the clear condition;
lowering the hoist as desired;