Dentistry – Apparatus – Having intra-oral dispensing means
Patent
1995-12-26
1998-06-09
Lucchesi, Nicholas D.
Dentistry
Apparatus
Having intra-oral dispensing means
433 84, 433126, A61C 107
Patent
active
057624950
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a surgical instrument, particularly for dental surgery, and more particularly to a surgical instrument supplied with at least one sterile fluid.
BACKGROUND OF THE INVENTION
Instruments used in dental surgery, such as those using for example ultrasound, ordinarily require, on the one hand, an energy supply, namely either electrical energy or energy furnished by a gas under pressure and, on the other hand, a supply of liquid such as an irrigation liquid.
It is known that certain periodontal procedures use this type of instrument, and particularly those taking place between the gum and the tooth of a patient, such as procedures on the radicular surface, must be carried out with sterile instruments and irrigation fluids. If the existing odontological instruments permit easily and rapidly replacing a tool-carrying element, or handpiece, which is non-sterile, with a sterile tool-carrying element, they do not permit on the other hand exchanging with the same facility the irrigation fluid which supplies this instrument to replace it with a sterile fluid. In current practice, the surgeon having begun a procedure in a non-sterile mode and wishing to carry it on in a sterile mode is thus constrained to change all of his instruments, which represents for him a supplemental difficulty.
SUMMARY OF THE INVENTION
The present invention has for its object to provide means permitting the surgeon to change easily and substantially instantaneously, from one non-sterile configuration to a sterile configuration, or from a given irrigation liquid to another irrigation liquid.
The present invention thus has for its object a surgical instrument and particularly a surgical instrument supplied with at least one sterile fluid, comprising an active element and a supply element, the rear portion of the active element and the front portion of the supply element comprising complementary connection means permitting ensuring their interconnection in a sealed manner, the supply element comprising at least one supply channel for a first fluid, opening adjacent the connection means, characterized in that: fluid, when the active element is connected to the supply element.
In one embodiment of the invention, the means ensuring closure of said supply channel for the first fluid, when the active element is connected to the supply element, are an integral portion of the rear portion of the active element.
In another embodiment of the invention, the active element is constituted by at least two elements interconnectable in a sealed manner, namely a forward or head element, and a rear or irrigation connector element, the supply means for the second fluid are connected to the irrigation connector, and the rear portion of the head comprises sealed connection means adapted to be connected with the supply element, the supply channel for the first fluid being in communication with the head when this latter is connected to the supply element.
In another particularly interesting embodiment of the invention, the active element is constituted by at least two elements interconnectable in a sealed manner, namely a forward or head element, and a rear or irrigation connector element, the supply means for at least a second fluid are in communication with the irrigation connector, and the rear portion of the head comprises connection means complementary to those of the supply element permitting ensuring a sealed connection with the latter, the supply channel for the first fluid being in communication with the head when this latter is connected to the supply element.
The present invention can be embodied in numerous existing apparatus, and thus permits the practitioner to change simply and substantially instantaneously from one nonsterile configuration to a sterile configuration and, more generally, to use in the course of a single procedure several irrigation liquids which may or may not be mixed and which moreover are available in a substantially immediate fashion.
BRIEF DESCRIPTION OF THE DRAWINGS
REFERENCES:
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patent: 4804364 (1989-02-01), Dieras et al.
patent: 5312349 (1994-05-01), Lohn
patent: 5482462 (1996-01-01), Rosenstatter
Dieras Francis
Dupeyron Pascal
Pinel Alain
Lucchesi Nicholas D.
Satelec S.A.
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