Instrument for treating biological tissue, method for generating shock wave-like pressure waves in such an instrument

Abstract

The invention relates to an instrument for treating biological tissue, comprising a housing (4), in which is disposed a ballistic device for generating extracorporeal shock wave-like pressure waves and a transfer element (2) permanently placed on the biological tissue, said element coupling the pressure waves into the body of living creatures, wherein the transfer element (2) couples non-focused, ballistically generated, shock wave-like pressure waves into the biological tissue, said waves generated by an impaction part (10) that is accelerated to a high final velocity of over 5 m / s by a pneumatic medium which is under an operating pressure in a pressure channel (6), said impaction part moving back and forth and impinging on the transfer element (2), wherein the front part of the pressure channel (6) is connected to a back-pressure chamber (8) into which the pneumatic medium, which is located distally in front of the impaction part (10), can flow in toward the transfer element (2) upon acceleration of the impaction part (10). A fast-acting valve (16) releases the pneumatic medium, which is under operating pressure, into the pressure channel (6), wherein a control circuit (17) controls the duration of opening of the valve (16) as a function of at least one or a combination of the following parameters: working pressure, impact frequency or pressure in the back-pressure chamber (8).

Description

Technical field [0001] The invention relates to an instrument for treating biological tissue, as defined in the preamble of claim 1 or 2, and to an instrument for generating shock waves within such an instrument, as defined in the preamble of claim 14 or 15. shaped pressure wave method. Background technique [0002] Such a device is known from WO9857707 and utilizes shock wave-like radiating pressure waves to accelerate the healing process of fractures, enthesiopathies, tendonitis and is also used to accelerate the healing process of periodontitis. Another area of ​​application is the treatment of pain within the soft tissue area of ​​the musculoskeletal system near the bones. [0003] Other known pressure pulse sources used for the same therapeutic purposes use focused shock waves and are only effective within a very limited focused zone. However, in order to obtain satisfactory treatment results, the entire fracture area must be treated uniformly with sound waves. This ...

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Problems solved by technology

However, this method is time-consuming as the treatment site must be repeatedly searched for

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