Equipment that makes it possible to apply a determined pulsatile pressure to a medical device

摘要

The invention relates to equipment for applying a determined pulsatile pressure to a medical device, comprising: a withdrawing means (2) designed to withdraw fluid from a source of fluid in continuous flow at high pressure; a conversion means (3) designed to convert said fluid into a fluid in a pulsatile flow at low pressure; at least one application means (105) for applying said fluid, as a low-pressure pulsatile flow, to said medical device; and a means (104) for removing said fluid.

主权项

1. Apparatus that applies a predetermined pulsating pressure on a medical device, the medical device being a tube, catheter or suit, comprising:
drawing means for drawing a continuous flow high-pressure fluid from a fluid source; conversion means for converting the continuous flow high-pressure fluid into a low-pressure pulsating flow fluid, both the high-pressure fluid and the low-pressure pulsating flow fluid originating from the fluid source, the conversion means comprising:
a compartment comprising a first inlet at one side of the compartment and a second inlet at another side of the compartment;a tube comprising a first portion in direct fluid communication with the drawing means and the first inlet and a second portion in direct fluid communication with the second inlet and at least one application means;a high pressure piston positioned within the first portion of the tube;a high pressure spring positioned within the first portion of the tube;a low pressure piston positioned within the second portion of the tube; anda low pressure spring positioned within the second portion of the tube; the at least one application means is configured for attachment to the tube, catheter or suit and applies the low-pressure pulsating flow fluid on said medical device at a pulsation rate between 10 and 300 beats per minute so that with each pulse:
high pressure fluid pushes the high pressure piston to open the first inlet;high pressure spring pulls high pressure piston to close the first inlet upon equalization of pressure between interior of compartment and pressure of the low-pressure pulsating flow fluid;low pressure piston is pushed back to open the second inlet to thereby deliver the low-pressure pulsating flow fluid to a medical device; andlow pressure spring pushes back on low pressure piston to close the second inlet upon drop of fluid pressure within the container resulting from opening of second inlet; and means for discharging the low-pressure pulsating flow fluid.