Claims
- 1. In a piezoelectric shock wave generator for use in medical equipment and including a plurality of piezoelectric elements being electrically interconnected to operate in parallel and mounted on a common carrier, there being a coupler medium for coupling shock waves as generated by these piezoelectric elements into the body of a living being, wherein the improvement comprises an electrical insulation between the piezoelectric elements being in a fluid state, in that each of said piezoelectric elements is surrounded by the fluid insulation, and in any direction towards any other of the piezoelectric elements, said insulation having a breakthrough strength in excess of about 5 KV/mm, being larger than the breakthrough strength of air.
- 2. Generator as in claim 1 wherein front ends of the piezoelectric elements are physically separated, said coupler medium and said insulation fluid being the same and having a common flow space.
- 3. Generator as in claim 1 there being a membrane in front of all said piezoelectric elements providing electrical interconnection between them and physically separating said insulation fluid from said coupler medium.
- 4. Generator as in claim 2 further comprising individual impedance matching devices in front of each of said piezoelectric elements.
- 5. Generator as in claim 1, wherein rear ends of said piezoelectric elements are embedded in said carrier.
- 6. Generator as in claim 1 further comprising wire loops interconnecting front ends of adjacent piezoelectric elements.
- 7. In a piezoelectric shock wave generator for use in medical equipment and including a plurality of piezoelectric elements being electrically interconnected to operate in parallel and mounted on a common carrier, there being a coupler liquid for coupling shock waves as generated by these piezoelectric elements into the body of a living being, wherein the improvement comprises an electrical insulation between the piezoelectric elements being a liquid, in that each of said piezoelectric elements is surrounded by the liquid, and in any direction towards any other of the piezoelectric elements, said insulation liquid having a breakthrough strength in excess of about 5 KV/mm which is larger than the breakthrough strength of air.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3803275 |
Feb 1988 |
DEX |
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Parent Case Info
This is a continuation-in-part of co-pending application Ser. No. 307,677 filed on Feb. 2, 1989 now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
3425992 |
Jan 1986 |
DEX |
2140693 |
Dec 1984 |
GBX |
Continuation in Parts (1)
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Number |
Date |
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Parent |
307677 |
Feb 1989 |
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