Plasma-generating device, plasma surgical device and use of a plasma surgical device
First Claim
1. A plasma-generating device, comprising:
- an insulator sleeve having a distal end;
an anode disposed distal to the insulator sleeve;
a cathode having a tapered portion narrowing toward the anode, the tapered portion having a first portion disposed within the insulator sleeve and a second portion projecting beyond the insulator sleeve toward the anode;
a plasma channel extending longitudinally between said cathode and through said anode and having an outlet at an end of the plasma channel;
at least one intermediate electrode disposed between said anode and said cathode; and
at least one coolant channel having at least one outlet at an end of the at least one coolant channel that is closer to the anode, whereby a coolant flowing through said at least one coolant channel can cool a portion of the device to which the at least one coolant channel is adjacent.
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Accused Products
Abstract
The present invention relates to a plasma-generating device, comprising an anode, a cathode and at least one intermediate electrode, said intermediate electrode being arranged at least partly between said anode and said cathode, and said intermediate electrode and said anode forming at least a part of a plasma channel which has an opening in said anode. Further, the plasma-generating device comprises at least one coolant channel which is arranged with at least one outlet opening which is positioned beyond, in the direction from the cathode to the anode, said at least one intermediate electrode, and the channel direction of said coolant channel at said outlet opening has a directional component which is the same as that of the channel direction of the plasma channel at the opening thereof. The invention also concerns a plasma surgical device and use of such a plasma surgical device.
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Citations
26 Claims
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1. A plasma-generating device, comprising:
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an insulator sleeve having a distal end; an anode disposed distal to the insulator sleeve; a cathode having a tapered portion narrowing toward the anode, the tapered portion having a first portion disposed within the insulator sleeve and a second portion projecting beyond the insulator sleeve toward the anode; a plasma channel extending longitudinally between said cathode and through said anode and having an outlet at an end of the plasma channel; at least one intermediate electrode disposed between said anode and said cathode; and at least one coolant channel having at least one outlet at an end of the at least one coolant channel that is closer to the anode, whereby a coolant flowing through said at least one coolant channel can cool a portion of the device to which the at least one coolant channel is adjacent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A plasma-generating device, comprising:
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a plasma chamber configured to generate plasma; a plasma channel extending longitudinally from the plasma chamber to a plasma outlet, the plasma channel and the plasma outlet defining a discharge path for the plasma; an anode; a cathode having a tapering tip narrowing toward the anode, the tapering tip having a first tapered portion disposed proximal to the plasma chamber and a second tapered portion extending into the plasma chamber; and a coolant channel configured to receive a coolant such that the coolant flowing through the channel can cool a portion of the plasma-generating device adjacent to the cooling channel. - View Dependent Claims (22, 23)
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24. A plasma-generating device, comprising:
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an anode; a cathode having a tapering tip narrowing toward the anode; an insulator sleeve having a portion that surrounds a portion of the tapering tip, the portion of the insulator sleeve having a constant inner diameter such that a space between an inner surface of the insulator sleeve and the cathode increases along a length of the tapering tip in a direction toward the anode; a plasma channel having a plasma outlet configured to discharge a plasma; and a coolant channel configured to receive a coolant such that the coolant flowing through the channel can cool a portion of the plasma-generating device adjacent to the cooling channel. - View Dependent Claims (25, 26)
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Specification