Resources Contact Us Home
Lithotripter with locating system integrated therewith and method for its use

Image Number 2 for United States Patent #4834106.

A lithotripter for disintegrating a calculus in the body of a patient has a shock wave source which emits shock wave pulses which are focussed to the calculus by an acoustic lens. As seen in the propagation direction of the shock wave pulses, a semi-transmissive acoustic mirror is disposed in front of the acoustic lens at a fixed angle. An ultrasound transducer, which is part of an ultrasound locating system, such as an ultrasound sector scanner, is disposed laterally with respect to the acoustic mirror, so that ultrasound waves are transmitted by the transducer to the calculus, and the reflected waves are transmitted from the calculus to the transducer, reflected by the acoustic mirror. Shock wave pulses from the shock wave source are only minimally impeded by the mirror, so that the therapy is substantially uninfluenced by the presence of the mirror. The ultrasound signals are used to identify the position of the calculus in the patient, so that the position can be continuously observed, even during the time in which the shock pulses are acting on the calculus. The approach path of the shock wave pulse to the calculus can also be ultrasonically monitored.

  Recently Added Patents
Systems and methods for automated institutional processing of payments
Cytokine receptors associated with myelogenous haematological proliferative disorders and uses thereof
Compositions, organisms, systems, and methods for expressing a gene product in plants using SCBV expression control sequences operable in monocots and dicots
Benzimidazole inhibition of biofilm formation
Fishing apparatus
Human renal disease marker substance
Multi-room user interface
  Randomly Featured Patents
Electrostatographic suspension developer of block copolymer reacted with mercaptan
Angular encoder
Self-drilling rivet for fastening panel members
Preparation of a crystalline aluminosilicate (zeolite)
Articulation mechanism for a medical bed
Recovery of heavy crude oil or tar sand oil or bitumen from underground formations
System and method for producing a continuous fabric strip for use in manufacturing paint roller covers
Protected feeder and/or insecticide applicator for livestock
Optical switch array capable of bidirectional signal transfer between a plurality of terminals
Polymer-modified building material dry-mixes