Irrigation and aspiration apparatus for use in endoscopic surgery
AssigneeSociete dite Sinergy S.A., a French Corp.
InventorsJean-Francois Ognier, Hubert Manhes
Life of this patent
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Abstract
The invention concerns a surgical apparatus for the irrigation and aspiration of the operative cavity during endoscopic surgery. The apparatus comprises a reservoir of liquid for irrigation of the cavity, a pump for circulating the liquid in the cavity, a pressure measuring and control means, such as a piezometric cell and valve for measuring and controlling pressure in the cavity and a flow control means for controlling the flow of the liquid. The apparatus also provides temperature control means by which the temperature of the liquid may be adjusted, which along with pressure control means and adjustment of pressure of the liquid in the cavity, provides a desired hemostatic effect during the surgical process.
Claims10
A surgical apparatus for the irrigation and aspiration of the operative cavity during endoscopic surgery, which apparatus provides a hemostatic effect during the surgical process, said apparatus comprising:
- a reservoir of liquid for irrigating the cavity;
- a pump for circulating the liquid in the cavity;
- a means for controlling liquid pressure and flow in the cavity which means permits the introduction and removal of liquid from the cavity;
- wherein
- the apparatus further comprises:
- a temperature control means by which the temperature of the irrigation liquid can be maintained between 40.degree. to 50.degree. C.;
- and
- a pressure control means by which pressure of the liquid in the cavity can be adjusted to the range of from 40 to 50 mm/Hg.
A surgical apparatus for the irrigation and aspiration of the operative cavity during endoscopic surgery, which apparatus provides a hemostatic effect during the surgical process, said apparatus comprising:
- a reservoir of liquid for irrigating the cavity;
- a peristaltic pump in line with the reservoir and which pump passes the liquid into the operative cavity;
- a piezometric cell which cell measures the excess liquid pressure in the cavity;
- a valve, which valve controls the liquid pressure inside the cavity and which valve comprises a pipe, a springfinger and a pneumatic jack, which jack may move from an open to a closed position wherein the pipe may be squeezed by the springfinger, and wherein the springfinger moves by means of the pneumatic jack which jack is acted upon in the open position by low pressure, which low pressure prevails in the chamber, and in the closed position by a spring, which acts counter to the low pressure;
- a temperature control means by which the temperature of the irrigation liquid can be maintained between 40.degree. to 50.degree. C.;
- and
- a pressure control means by which pressure of the liquid in the cavity can be adjusted to the range of from 40 to 50 mm/Hg, and
- a receiving chamber into which the liquid is received.
Dependencies are inferred from the claim text.