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Shock wave focusing device, shock wave generation apparatus, and shock wave ablation system

A technology for generating devices and shock waves, which is applied in ultrasonic therapy, coupling of optical waveguides, treatment, etc., can solve the problems of reduced convergence effect and low ellipticity, and achieves the effect of simple structure and high strength

Active Publication Date: 2015-09-30
SOUND WAVE INNOVATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, it is described that if the ellipticity is increased, the converging effect of shock waves at the outer focus will be reduced.
That is, from the point of view of the convergence efficiency, the practical ellipticity is less than 2, and it is known that converging shock waves cannot be generated at a distance exceeding 0.87 times the opening diameter of the spheroid

Method used

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  • Shock wave focusing device, shock wave generation apparatus, and shock wave ablation system
  • Shock wave focusing device, shock wave generation apparatus, and shock wave ablation system
  • Shock wave focusing device, shock wave generation apparatus, and shock wave ablation system

Examples

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Embodiment 1

[0107] "Example 1"

[0108] According to its ellipticity of 1.41, the opening diameter of the shock wave converging device 11 is 7.8mm, such as figure 2 Cut stainless steel thin plate (0.1mm) as shown in c, and carry out press processing, make shock wave converging device 11 (referring to Figure 10 a). In addition, the outer diameter when folded is 3.66 mm. This shock wave converging device 11 is referred to as Example 1.

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Abstract

Provided is a shock wave focusing device for a shock wave ablation system for coagulating and necrosing cardiac muscle tissue that becomes a cause of arrhythmia. A shock wave generation apparatus (10) comprises: a shock wave focusing device (11) which has a concave surface (11a); an optical fiber (12) which is inserted into the shock wave focusing device (11); a tubular catheter (13) which guides the optical fiber; an enclosure (14) which constitutes a space to be filled with liquid at the tip of the optical fiber (12); and the liquid (L) which is filled into the enclosure (14). The shock wave focusing device (11) is configured from a ring-shaped coupling part (16) provided with a central hole (11b), and 16 blade parts (17) curved outward from the edge of the coupling part (16) toward the front and provided elastically to the edge of the coupling part (16), and can be folded by rotating the blade parts (17) with respect to the coupling part (16).

Description

technical field [0001] The invention relates to a shock wave converging device for a shock wave generating device, a shock wave generating device and a shock wave ablation system. Background technique [0002] High-frequency ablation therapy has been adopted and widely used as a non-drug therapy for tachycardia-related arrhythmias. However, since the treatment site is cauterized by the electrodes, it is difficult to treat the root cause of the arrhythmia at a deep level, and there is a problem that the generated heat may cause severe thrombosis at the affected site. [0003] On the other hand, Extracorporeal Shock Wave Lithotripsy (ESWL) has been established to crush and remove urethral / kidney stones by converging shock waves in water to generate high pressure instantaneously in a confined space. [0004] Non-Patent Document 1 describes that in a shock wave converging device for converging shock waves generated from a point source, the concave shape with the best converging...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/20A61B17/00
CPCA61B17/00A61B2018/00351A61B2018/263A61B18/26A61B2017/22024A61B2017/22025A61B2017/320069A61N7/00G02B6/262G02B6/36
Inventor 下川宏明高山和喜山本裕朗长谷部雄飞早坂庄吉
Owner SOUND WAVE INNOVATION CO LTD
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