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RESEARCH PRODUCT
Electromagnetically generated extracorporeal shock waves for gallstone lithotripsy: in vitro experiments and clinical relevance.
M. StaritzR. HohenfellnerManfred ThelenMildenberger PA. RambowK H Meyer Zum BüschenfeldeM. GoebelTh. JungingerA. GrosseTh. Scherfesubject
Shock wavemedicine.medical_specialtyMaterials sciencemedicine.medical_treatmentClinical BiochemistryGeneral MedicineGallstonesLithotripsyIn Vitro Techniquesmedicine.diseaseBiochemistryExtracorporeal shock wave lithotripsyExtracorporealFirst generationSurgeryMaximum diameterCholelithiasisLithotripsymedicineHumansTomography X-Ray ComputedElectromagnetic PhenomenaBiomedical engineeringdescription
. First generation shock wave sources have been proved to disintegrate gallstones effectively, but they require the immersion of the patient's body in a tank of water. A recently developed second generation shock wave source (Siemens-Lithostar, Erlangen, FRG) generates shock waves electromagnetically. It presents several novel features. In particular the waterbath can be omitted and due to lower shock wave pressure general anaesthesia is not required. In vitro studies showed that 36 out of 38 gallstones (11–30 mm in diameter) could be disintegrated. Two concrements resisting lithotripsy were pure white cholesterol stones. Independent of shape, size, and composition (cholesterol or pigment) the maximum diameter of remaining fragments after lithotripsy was between 1 and 8 mm. For sufficient disintegration precise focusing (±1 cm) of the stones and maximum power of the shock wave generator were required.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1989-04-01 | European journal of clinical investigation |