Abstract: The handpiece for use in a surgical or medical operation, includes means for generating instructions to control operation of at least one apparatus connected to the handpiece or associated with the surgical or medical operation through a pneumatic variation or a series of pneumatic variations in a fluid transported by at least one control conduit connecting the handpiece to a pressure or depression generator, the variation or series of variations being generated by a direct or indirect digital action by the operator on the control conduit or an opening of the conduit, the variation or series of variations being detected, then processed and exploited to remotely control the apparatus.

Abstract: The process consists in generating a firing pulse pattern characterized in that it implements a pressurized liquid channel and a pneumatic aspiration channel and in that the periodic firing of the pressurized jet is controlled during the periodic application of aspiration and in that the tension on the tissue is released during the cutoff of the aspiration by aeration. A variant of the process enables obtaining, even in the case of a high repetition rate, a steep trailing edge of the firing pulse, by means of establishment of communication with the exterior of the pressurized liquid feed line near the time of the cutoff of the feeding of the liquid. This invention is of interest to manufacturers of surgical and medical instruments and handpieces for interventions using a pressurized liquid jet.

Abstract: The pressurized liquid dissection apparatus has means for pressurization of working liquids and treatment liquids, controlled discharge means for a pressurized jet, and means for switching or mixing a treatment product with the working liquid or multiplexing means during pulsed mode operation of pressurized pulsed jets. The procedure consists in pressurized spraying of at least one treatment product with the pressurized surgical working jet or separately therefrom but with the same apparatus and during the same intervention so as to realize a surgical act and a therapeutic act during one and the same intervention. This invention is applicable in the surgical and medical fields.

Abstract: The apparatus connects to a pressurized sterile liquid source SOSPE and to an aspiration source SOSPI and is composed of two basic channels, one for a pressurized sterile liquid jet Jet HP for dissection and the other for a flow jet Jet DEBIT for lavage/rinsing or irrigation, with each channel linked to a specific handpiece. Each of the dissection and the lavage/rinsing channels passes through a flow control unit ESCA1 and ESCA2, respectively, which provides for the opening/closing of the fluid links in continuous or pulsed operation making it possible to operate as a pulsed jet or to obtain a continuous jet. This invention applies primarily to manufacturers of apparatuses for medical or surgical use.

Abstract: The bifunctional generator comprises a closed or self-feeding bag (1) containing the reserve of liquid (2) to be used, the bag being pressure-constrained in a chamber (3) and hydraulically coupled with the supply link (13) of a hand piece (5, 6) by a connecting hydraulic section (9). The pressure generator or delivery generator functioning mode is determined each time by the presence in the connecting section of at least one hydraulic component (19, 21) and/or a hydraulic conformation (20, 22) associated with the particular feature of the hand piece used. This invention is of interest for the manufacturers of medical appliances: aquadissection, resectoscopy, lavage, disinfecting or the like and it as useful applications for various foodstuffs.

Abstract: A surgical dissection instrument using a high-pressure liquid jet including a handpiece provided with a mechanism for generating and controlling the liquid jet. The handpiece has a simple design and is cheap to manufacture and may thus be a single-use handpiece. The handpiece is ergonomically shaped and may be held in one hand with all the function controls being operated by the fingers of the same hand. The instrument has a mechanism provided with a flexible tubing (13) for supplying the high-pressure liquid to the handpiece (10). The handpiece (10) has a squeezing mechanism for locally and momentarily closing off the flexible tubing (13) to cut off the supply of liquid: the mechanism consists of a moveable squeezing projection (25) on a hinged control handle (17), and a stationary squeezing projection (26) secured to the body (15) of the handpiece (10). The handpiece (10) has a mechanism (18) for locking the control handle (17) and cutting off the liquid jet.