| abstract |
A disposale assembly for a handheld gas plasma tissue treatment instrument has a heatÂresistant dielectric tube (516) which is housed in an instrument nose casing (517). The casing has a latch feature permitting releasable attachment of the assembly to the body of an instrument handpiece (501). The latter contains inner and outer electrodes (506,507) which, when the disposa+e assem+y is attached to the handpiece body, lie respectively inside and outside the dielectric tube (516). A field focussing element (521) is incorporated in the tube (516) and is located in registry with the end of the inner electrode (506) when the assem+y is attached to the handpiece body. |