Treatment head for electromedical diagnostic or therapeutic treatment of body parts

Claim 1

A treatment head assembly for electromedical treatment of body parts, comprising an applicator with a first treatment surface (7) having an inner side and an outer side, electromedical treatment means (2, 3) coupled with the inner side of said first treatment surface (7) for activating said first treatment surface (7) for effecting electromedical treatment of a body part when the body part is disposed at the outer side of said first treatment surface (7), said electromedical treatment means (2, 3) comprising an ultrasonic transducer (2) with a first adapter piece (3) interposed between the transducer (2) and said first treatment surface (7), a second adapter piece (8) providing a second treatment surface (10) of different configuration than said first treatment surface (7), and having a base (9) in mating conforming overlying relation to said first treatment surface (7) at the outer side thereof such that the electromedical treatment means (2, 3) is coupled with said second treatment surface (10) of said second adapter piece (8) via said first adapter piece (3) and the first treatment surface (7) and said base (9) for effecting electromedical treatment of a body part disposed at said second treatment surface (10), and said second adapter piece having connected therewith an annular collar (11) having a finger emplacement (18) on the collar circumference and having releasable engagement means releasably engagable with said first adapter piece of said applicator for effecting a positive locking of said second adapter piece (8) to said applicator with the base (9) being held in said mating conforming overlying relation to said first treatment surface (7), means comprising said finger emplacement (18) on said annular collar (11) for accommodating a rapid release of said adapter piece (8) from said first adapter piece (3) of said applicator to expose said first treatment surface (7) at the outer side thereof for direct association with a body part for effecting electromedical treatment thereof, said second adapter piece (8) having an annular groove (13) spaced from the base (9) and defining a shoulder (14), said annular collar (11) having a lip (12) engaged in said annular groove (13) and interlocked with said shoulder (14) to connect said second adapter piece (8) with said annular collar (11), the finger emplacement (18) comprising a circumferential ridge on the annular collar (11), said annular collar (11) being formed of resilient material, said electromedical treatment means (2, 3) including said ultrasonic transducer (2), comprising means for energizing said first treatment surface (7) with ultrasonic energy via said first adapter piece (3), and so as to produce an ultrasonic wavelength λ in said second adapter piece (8), said first adapter piece (3) having a thickness equal to a multiple of the half wavelength of the ultrasonic waves, and said second adapter piece (8) providing a length between its base (9) and said second treatment surface (10) equal substantially to a whole number multiple of the half wavelength (λ/2).