METHOD FOR CONTROLLING AND/OR REGULATING A COMPRESSED-GAS-OPERABLE MEDICAL DRIVE DEVICE AND SUCH A DRIVE DEVICE
First Claim
1. A method for controlling and/or regulating a compressed-gas-operable medical or dental drive device comprising a rotor and a tool-holding device connected to the rotor, wherein the drive device can be supplied with compressed gas at a maximum gas pressure from a compressed gas source to induce a rotational movement of the rotor and wherein the drive device comprises a valve for adjusting the gas pressure and/or a flow rate of the compressed gas,wherein the method comprises operating the rotor at a substantially constant rotational speed at least within a limited load range by adjusting the gas pressure and/or the flow rate of the compressed gas through the valve, andwherein the rotational speed is reduced on reaching a predetermined pressure value of the compressed gas, which is lower than the maximum gas pressure of the compressed gas.
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Accused Products
Abstract
Methods for controlling and/or regulating of a compressed-gas-operable medical or dental drive device and a control and/or regulating device for performing such methods are described. In one method according to a first embodiment, a rotor of the drive device is operated at an essentially constant rotational speed (n1) by adjusting the gas pressure and/or the flow rate of the compressed gas through a valve and the rotational speed is reduced on reaching a pressure value (p2) of the compressed gas which is lower than the maximum gas pressure (pmax) of the compressed gas. In the case of a method according to a second embodiment, the gas pressure of the compressed gas and the rotational speed of the rotor are altered on reaching a rotational speed limit value (n2, n3) of the rotor by adjusting the valve.
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Citations
17 Claims
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1. A method for controlling and/or regulating a compressed-gas-operable medical or dental drive device comprising a rotor and a tool-holding device connected to the rotor, wherein the drive device can be supplied with compressed gas at a maximum gas pressure from a compressed gas source to induce a rotational movement of the rotor and wherein the drive device comprises a valve for adjusting the gas pressure and/or a flow rate of the compressed gas,
wherein the method comprises operating the rotor at a substantially constant rotational speed at least within a limited load range by adjusting the gas pressure and/or the flow rate of the compressed gas through the valve, and wherein the rotational speed is reduced on reaching a predetermined pressure value of the compressed gas, which is lower than the maximum gas pressure of the compressed gas.
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5. A method for controlling and/or regulating a compressed-gas-operable medical or dental drive device comprising a rotor and a tool-holding device connected to the rotor, wherein the drive device can be supplied with compressed gas at a maximum gas pressure from a compressed gas source and wherein the drive device comprises a valve for adjusting the gas pressure and/or the flow rate of the compressed gas,
wherein the method comprises, upon reaching a rotational speed limit value of the rotor by adjusting the valve, altering the gas pressure of the compressed gas and the rotational speed of the rotor.
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12. A method for controlling and/or regulating a compressed-gas-operable medical or dental drive device comprising a rotor and a tool-holding device connected to the rotor, wherein the drive device can be supplied with compressed gas at a maximum gas pressure from a compressed gas source and wherein the drive device has a valve for adjusting the gas pressure and/or a flow rate of the compressed gas,
wherein the method comprises, when the drive device is not supplied with compressed gas, the user selecting at least one of the following parameters at least within a predefined range: - a rotational speed limit value of the rotor, which is lower than a maximum rotational speed determined by the maximum gas pressure, a setpoint rotational speed of the rotor, a gas pressure limit value of the compressed gas, which is lower than the maximum gas pressure, and/or a torque value.
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13. A controlling and/or regulating device for a compressed-gas-operable medical or dental drive device having a rotor and a tool-holding device, the drive device being suppliable with compressed gas from a compressed gas source and having a valve for adjusting a gas pressure and/or a flow rate of the compressed gas,
wherein the controlling and/or regulating device is configured to drive the rotor according to at least one control mode, wherein in a first control mode, the controlling and/or regulating device is configured to drive the rotor at a substantially constant rotational speed at least within a limited load range by adjusting the gas pressure and/or the flow rate of the compressed gas through the valve, and to reduce the rotational speed of the rotor upon reaching a predetermined pressure value of the compressed gas lower than a maximum gas pressure of the compressed gas, wherein in a second control mode, the controlling and/or regulating device is configured to drive the rotor and, upon reaching a rotational speed limit, to adjust the valve to alter the gas pressure of the compressed gas and the rotational speed of the rotor, and wherein in a third control mode, when the drive device is not supplied with compressed gas, the controlling and/or regulating device is configured to drive the rotor, at least within a predefined range, according to a user selected parameter comprising at least one of a rotational speed limit value of the rotor lower than a maximum rotational speed determined by the maximum gas pressure, a setpoint rotational speed of the rotor a gas pressure limit value of the compressed gas lower than the maximum gas pressure and/or a torque value.
Specification