Surgery – Instruments – Means for removal of skin or material therefrom
Reexamination Certificate
2000-04-03
2001-02-06
Mancene, Gene (Department: 3732)
Surgery
Instruments
Means for removal of skin or material therefrom
Reexamination Certificate
active
06183483
ABSTRACT:
FIELD OF THE PRESENT INVENTION
The present invention relates to peeling apparatus for controlled removal of surface portions of human tissue, and more particularly to a purging arrangement incorporated with the peeling apparatus, which is adapted to instantaneously purge the clogged air circuit safely in low cost without complicating the system structure.
BACKGROUND OF THE PRESENT INVENTION
In order to remove the metabolic dead tissue on skin surface for skin care and restoration purposes, a peeling apparatus is commonly used to effect a controlled application of reducing substances onto human tissue, for example the skin, for the purpose of obtaining a superficial abrasion of adjustable magnitude. For example, this abrasion could be of minimum value, known in general as “pealing” and consisting essentially in a removal of the outermost layers of the epidermis, or else of maximum value and consisting in a deep abrasion which could also involve the dermis.
The conventional peeling apparatus generally comprises a compressor conveniently generating compressed air, an abrasive or reducing substance supply means, supplying, for example, microcrystals of quartz, metal, dust or derivatives of aluminum, such as corundum, possibly having different grain size diameters, a suction means which is generally constituted by a suction pump and a collection reservoir connected to it, and a tool constituting the instrument manipulated by the medical operator to remove the portions of tissue.
The compressor maintains under pressure air contained within a reservoir, a pressure regulator connected in series with an output from the reservoir, and a solenoid valve which allows the air under pressure to flow out along a duct. The suction means comprises a reservoir connected to the duct by means of a flow regulator and a solenoid valve.
However, moisture and crystal quality can produce a clog that will quickly shut down the entire apparatus. In other words, the microcrystals may clog the outlets of the supply reservoir and used crystal reservoir, wherein when either the outlet of the supply reservoir which is connected to the tool or the outlet of the used crystal reservoir which is connected to the compressor is clogged, the air circuit of the peeling apparatus is broken and the ejection of crystal will be shut down too.
SUMMARY OF THE PRESENT INVENTION
The main object of the present invention is to provide a peeling apparatus for removing surface portions of human tissue comprising a purging arrangement adapted to instantaneously purge the clogged air circuit safely in low cost without complicating the system structure.
Another object of the present invention is to provide a purging arrangement adapted to be equipped in a peeling apparatus, which is easy to operate and which does not require for its construction the use of complicate components.
Another object of the present invention is to provide a purging arrangement adapted to be equipped in a peeling apparatus, which substantially increases the performance of the peeling apparatus by removing the clogged condition easily and rapidly.
Accordingly, in order to accomplish the above objects, the present invention provides a peeling apparatus for removing surface portions of human tissue by superficial abrasion caused by a stream of a mixture of air with at least one granular abrasive substance striking on the surface portion of the human tissue to be removed, wherein the peeling apparatus comprises:
an abrasive substance supply means supplying granular abrasive substances, such as microcrystals of quartz, metal, dust, or derivatives of aluminum, which comprises a supply reservoir storing a predetermined amount of fresh abrasive substance therein, and a fresh substance outlet member extended into the supply reservoir;
a peeling tool, which is an instrument adapted to be manipulated by a medical operator to remove the surface portions of the human tissue, having an input opening, a delivery hole and an output opening, wherein the input opening is connected to the fresh substance outlet member of the supply reservoir;
a suction means for providing a negative air pressure environment within the supply reservoir so as to cause a stream of a mixture of air and the granular abrasive substance traveling from the fresh substance outlet member to the peeling tool through the input opening thereof, wherein the suction means comprises a collection reservoir having a used substance inlet member connected to the output opening of the peeling tool and an air filtering outlet member, and a suction pump having an air outlet and an air inlet connecting with the air filtering outlet member of the collection reservoir through a first air duct,
wherein by keeping in contact the delivery hole with the surface portion of the human tissue to be subjected to treatment, the steam of the mixture of the compressed air and the abrasive substances traveling through the delivery hole is caused to strike the surface portion of the human tissue facing the delivery hole, wherein after striking the surface portion of the human tissue, a mixture of the compressed air and used abrasive substances containing the abrasive substances and tissues removed from the surface portion is collected in the collection reservoir via the output opening of the peeling tool and the used abrasive substance inlet member of the collection reservoir, wherein the air filtering outlet member of the collection reservoir filters the used substances and stores in the collection reservoir while sucking the compressed air by the suction pump via the first air duct; and
a purging arrangement comprising
a first switch means, which comprises a control switch valve connected at the first air dust, for regulating the compressed air flowing from the air filtering outlet member of the collection reservoir to the suction pump normally, and being selectively switched to cut off the connection between collection reservoir and the air inlet of the suction pump while instantaneously connecting the air outlet of the suction pump to the air filtering outlet member instead, so as to deliver the air output from the air outlet of the suction pump reversely to the air filtering outlet member for purging a clogged condition thereof, and
a second switch means for normally ensuring the air outlet of the suction pump connected to outside and selectively switching to instantaneously connect the air outlet of the suction pump to the fresh substance outlet member of the abrasive substance supply means so as to deliver the air output from the air outlet of the suction pump reversely to the fresh substance outlet member for purging a clogged condition thereof
REFERENCES:
patent: 4492575 (1985-01-01), Mabille
patent: 5037431 (1991-08-01), Summers et al.
patent: 5100412 (1992-03-01), Rosso
patent: 5810842 (1998-09-01), Di Fiore et al.
patent: 6106288 (2000-08-01), Brassil et al.
Chan Raymond Y.
David and Raymond
Mancene Gene
Robert Eduardo C.
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