A shock wave lithotripter system and a method of performing shock wave calculus fragmentation using the same

A shock wave, stone crushing technology, applied in the medical field, can solve problems such as changing the stone structure

Inactive Publication Date: 2010-05-26
周宇峰 +1
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  • Abstract
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Problems solved by technology

Although bubble cavitation can only exfoliate small particles from the stone surface, it can change the stone structure and make it easily crushed by subsequent shock waves

Method used

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  • A shock wave lithotripter system and a method of performing shock wave calculus fragmentation using the same
  • A shock wave lithotripter system and a method of performing shock wave calculus fragmentation using the same
  • A shock wave lithotripter system and a method of performing shock wave calculus fragmentation using the same

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Embodiment

[0029] Key features of the present invention include specific improvements to diffracted waves generated at the edge of the lithotripter, independent of the manner in which the shock wave is generated, which may be hydraulic, electromagnetic, piezoelectric, or a combination of these combination of ways. Below, how to implement the present invention will be described by taking the use of the protective device on the Dornier HM-3 stone crusher as an example.

[0030] see figure 1 and figure 2 , the DORNIER HM-3 lithotripter is currently the most widely used lithotripter in clinical practice, mainly composed of spark gap electrodes and truncated ellipsoid reflectors, the ellipsoid reflectors are used for focusing electrodes The shock wave generated by the discharge installs the protective device (7) on the support (6), and the support (6) is fixed on the outside of the ellipsoidal reflector (3) of the lithotripter (1). The protection device (7) can also be directly fixed on t...

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Abstract

A shock wave lithotripter system and a method of performing shock wave calculus fragmentation using he same are provided. The system is composed of current commercial lithotripter (1) with protection device (7) made of special acoustic material. The protection device (7) could change the diffraction wave produced at the edge of the shock wave reflector, focusing lens, or shock wave generator, leading to the reduction of the energy of tensile wave in the focal region and the subsequent bubble cavitation effect in he renal tissue. Therefore, the propensity of shock wave induced tissue injure could be suppressed. Meanwhile, with the increase of the number of shock wave delivered, the effect of bubble cavitation effect be restored gradually to guarantee the success of stone fragmentation.

Description

technical field [0001] The invention belongs to the medical field, and relates to a shock wave lithotripsy system and a method for implementing shock wave lithotripsy by using the system, and is mainly applicable to various shock wave lithotripsy treatments. Background technique [0002] Extracorporeal shock wave lithotripsy (SWL) was invented in the early 1980s and has been routinely used as the main lithotripsy method in the clinical treatment of renal and urinary calculi. Although it has achieved worldwide success in modern medical technology, clinical and animal experiments still found that after SWL treatment, patients will have some forms of kidney damage, such as hematuria, and renal tissue, renal fat capsule and subcapsular connective tissue. Diffuse hemorrhage and multiple hematomas formed within the tissue, as well as renal edema. Moreover, the long-term effects of SWL on renal function are still being studied. Renal injury caused by SWL is mainly vascular injury...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/225
CPCA61B17/2251A61B2017/22027A61B2019/481A61B2090/08021
Inventor 周宇峰张健
Owner 周宇峰
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