The present application is the national stage under 35 U.S.C. 371 of PCT/IT98/00365, filed Dec. 16, 1998
1. Technical Field of the Invention
The present invention relates to a surgical device for the irrigation and the suction of a physiological solution extracted from a flexible bag that, in its most general embodiment, comprises a terminal element of irrigation and suction, a propelling system of the physiological solution, at least one delivery duct connecting the propelling system to the terminal element, wherein the propelling system comprises: a rigid wall container, apt to house the flexible bag, having an access side, a sealed lid, a feed openig connectable to a high pressure source of propellant fluid; a fitting element, removably sealed through the lid of the container, having a through hole extended between an outer joint, for the connection. of said delivery duct and an inner joint projecting inside the container; and a delivery element projecting inside the container from said inner joint.
2. Prior Art
Devices of the aforementioned type are diffusely used in various kinds of surgery. They have the task of maintaining clean and disinfected the area undergoing surgery with the irrigation of a physiological solution. In the same context an excess of fluids gathers, caused for instance by the same physiological solution or by organic fluids like blood or the like.
Utilising the same terminal element of irrigation, this excess of fluids is removed by a localised suction.
This kind of device is known fcm the U.S. Pat. No. 4,913,698 (Ito et al.) and from the International Application No. Publ. WO/94/27695 (Guignard).
These irrigation devices must satisfy some main requirements. One of those consists in the fact that the physiological solution must continuously be maintained in perfectly aseptic conditions despite, for instance, the protracting of the surgery or the replacement of the flexible bag containing the solution.
Another requirement is determined ty the device reliability, necessarily the utmost possible, and for a duration of the surgery a priori indeterminable.
In fact, the physiological solution supply cannot fail but for the shortest possible instants, due i.e. to the aforementioned bag replacement.
To ensure maximum asepsis, once surgery has ended all components that inside the device are wet by the solution are, replaced by corresponding new or sterylised aseptic components.
Every single replaced component must therefore ensure the utmost reliability. It is hence apparent how an increase in number and complexity of components to be replaced must unavoidably be matched by a stsricter and more expensive quality control of each single component.
Therefore, the need arises of a simplification in the device construction, and especially of reducing the, number of components subject to replacement.
The technical problem underlying the present invention is that of providing a surgical cevice for the irrigation and the suction capable to overcome the drawbacks mentioned with reference to the known art, satisfying in the meantime the above mentioned need.
This problem is solved by a surgical device as specified above, characteised in that said delivery is element is a piercing delivery element having a fissured nose apt to pierce the flexible bag.
The main advantage of the surgical device according to the present invention lies in the fact of entailing the replacement of only a very limited number of parts for each surgery.