Permanent magnet moving-coil type shock wave generating device

Abstract

The invention provides a permanent magnet moving-coil type shock wave generating device. The permanent magnet moving-coil type shock wave generating device comprises a cup, a water sac, a vibrating film, a permanent magnet and a coil, wherein the water sac is arranged on the cup; the vibrating film is arranged below the water sac; the coil is fixedly arranged below the vibrating film; the permanent magnet is arranged in the cup, and is arranged below the vibrating film; and when the coil is electrified, a magnetic field of which the polarity direction is the same as that of the permanent magnet is generated. According to the permanent magnet moving-coil type shock wave generating device disclosed by the invention, when the coil is electrified, under the effect of magnetic field of the permanent magnet, the coil is pushed by upward thrust in the direction of the axis of the coil; the coil is fixedly arranged below the vibrating film, so that under the driving of the coil, the vibratingfilm can produce pulse vibration to form a shock wave; and the permanent magnet is adopted, the magnetic flux density is large, the interaction of the induced magnetism field of the coil and the permanent magnet is violent, the kinetic energy transformation efficiency is high, and the effect of producing the shock wave is notable, so that the service life of the products can be effectively prolonged, and the reliability and the safety of the products are improved.

Description

technical field [0001] The invention relates to a medical shock wave generating device, in particular to a permanent magnet moving coil type shock wave generating device. Background technique [0002] Shock wave is a mechanical wave produced by sudden release in a confined space in gas or liquid. Its essence is a kind of energy transmission process. It has been widely used in clinical medicine now, mainly for the treatment of urinary stones, hepatobiliary system Calculus, fracture nonunion, femoral head necrosis, aseptic soft tissue injury and the pain caused by it, erectile dysfunction and cardiovascular function and other diseases. The existing electromagnetic shock wave source consists of a cup body, an electromagnetic disk, a lens and a water bag. The electromagnetic disk is fixedly installed at the bottom of the cup as a device for generating shock waves; a lens is arranged in the middle of the cup as a device for changing the direction of shock wave propagation; a wat...

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Problems solved by technology

[0003] But the shock wave vibration energy of the prior art has high requirements on current and voltage, so that its service life and reliability have corresponding limitations. Large, and the coil is set close to the diaphragm, then the heat generated by its heating will be directly transferred to the propagation medium (such as: water), and then transferred to the human body. Therefore, a water circulation system needs to be installed in the water bag to achieve heat dissipation; Third, the electromagnetic shock wave source in the prior art has relatively high requirements on the supporting power supply

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