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AssigneeDentsply Research & Development Corp.
InventorsRichard H. Paschke, Marty I. Septimus, George E. Warrin, Michael P. Parr
Estimating the term…
An ultrasonic handpiece wherein the entire assembled handpiece may be sterilized with an ingress of the sterilizing fluid into the interior of the handpiece. The handpiece is formed with an elongated housing sleeve and a coil unit for establishing an alternating magnetic field located therein. The housing sleeve and coil unit is assembled such that crevices are formed between the ends of the housing sleeve and coil unit, thus allowing steam, chemicals and heat to pass in and out of the interior of the handpiece for more rapid and thorough sterilizing of the handpiece. Further, the coil unit is not potted to the housing sleeve in order to allow for different thermal coefficients of expansion between materials without the buildup of undue stress.
An ultrasonic handpiece comprising:
An ultrasonic handpiece comprising:
A method of making an ultrasonic handpiece comprising:
A sterilizable electrical winding activated hand-piece for use in treating mammals comprising a handpiece housing having an interior enclosing an electrical winding, said housing having at least one sterilizing medium admitting opening into its interior extending to said electrical winding, wherein the winding comprises a coil of coated wire that is not potted but insulated such that said winding is capable of repeated sterilizations without failure.
A sterilizable electrical winding activated handpiece for use in treating mammals comprising a handpiece housing having an interior enclosing an electrical winding, said housing having at least one sterilizing medium admitting opening into its interior extending to said electrical winding, the winding comprising a coil of coated wire that is not potted and said housing member having an open interior and at least one winding of said coated wire coil directly exposed to said open interior of said housing member, wherein the winding is on a coil form and the housing member and the coil form comprising material having the same coefficient of expansion and contraction during heating and cooling sterilization cycling.
A sterilizable electrical winding activated handpiece for use in treating mammals comprising a handpiece housing having an interior enclosing an electrical winding, said housing having at least one sterilizing medium admitting opening into its interior extending to said electrical winding, the winding comprising a coil of coated wire that is not potted and said housing member having an open interior and at least one winding of said coated wire coil directly exposed to said open interior of said housing member, wherein the winding is on a coil form and the housing member and the coil form comprising material having different coefficients of expansion and contraction during heating and cooling sterilization cycling.
An autoclavable ultrasonic dental or medical handpiece for use in dentistry or medicine comprising an assembly comprising an elongated housing sleeve and a conductive coil unit, said assembly including a breach or opening for autoclaving by steam, said opening providing for the rapid diffusion and penetration within the assembly and removal therefrom of steam, said coil unit comprising an insulated wire winding that is not potted, said winding capable of repeated autoclaving without electrical and mechanical failure.
An autoclavable ultrasonic dental or medical handpiece for use in dentistry or medicine comprising an assembly comprising an elongated housing sleeve and a conductive coil unit, said assembly including a breach or opening for autoclaving by steam, said opening providing for the rapid diffusion and penetration within the assembly and removal therefrom of steam, wherein said housing sleeve and conductive coil unit consist essentially of heat resistant and autoclavable material that will sustain 400 steam sterilizing cycles, each cycle being at a temperature of at least 134.degree. C. for at least 12 minutes, at least 95% of the time in at least one out of three repetitions of twenty handpieces chosen at random.
An autoclavable ultrasonic dental or medical handpiece for use in dentistry or medicine as a dental scaler, medical scaler, or an endodontic, orthopedic, or nasal medical instrument or a combination thereof, comprising an assembly comprising an elongated housing sleeve and a conductive coil unit, said assembly including a breach or opening for autoclaving by steam, said opening providing for the rapid diffusion and penetration within the assembly and removal therefrom of steam, wherein said coil unit comprises a coil of fine wire having a smaller diameter than 30 gauge (AWG).
A method of autoclaving an ultrasonic dental or medical handpiece comprising an electrically conductive coil within an open space inside of said handpiece, said method comprising placing said handpiece in an autoclave and subjecting said handpiece to steam at a temperature of at least 134.degree. C. for at least 10 minutes said steam ingressing into a breach, opening or crevice in said handpiece into the space occupied by said conductive coil.
Dependencies are inferred from the claim text.