Medical handpiece with a light guide which can be displaced in an axial direction
First Claim
1. A medical handpiece for transmitting energy from a laser beam into biological tissue comprising:
- an optical fiber for conveying the laser radiation;
a light guide for radiating the laser energy into the tissue; and
a suction cannula for the biological tissue that is comminuted by the action of the energy and in which the light guide extends;
said optical fiber, light guide and suction cannula being provided in a base body;
for purposes of alignment of the optical axis of the light guide with respect to the longitudinal axis of the suction cannula as well as with respect to the optical axis of the radiation-side end of the fiber, at least one adjusting face being allocated in each instance to the light guide, the suction cannula and the fiber so as to be fixed in place;
at least one of the adjusting faces assigned to the light guide corresponding with an adjusting face assigned to the suction cannula and with an adjusting face assigned to the fiber, and said light guide being displaceable in the axial direction relative to the suction cannula; and
wherein the alignment can be produced or canceled depending on the displacement direction; and
wherein an adjusting face is assigned to the light guide via an adjusting piece, which is fixedly connected with the light guide, stops provided for limiting axial displacement of the light guide and the stops are formed as stop faces vertical to the radiation direction, and at least one stop face is fixed with respect to the light guide and one stop face is fixed with respect to the suction cannula.
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Accused Products
Abstract
A medical handpiece for transmitting energy from a laser beam into biological tissue. An optical fiber for conveying the laser beam to the handpiece and a light guide for radiating the laser energy into the tissue are arranged in a base body. Means are provided for aligning the optical axis of the light guide in relation to the optical axis of the fiber and means for aligning the optical axis of the light guide in relation to the base body are also provided. The light guide can be displaced in an axial direction in relation to the base body and the alignment can be set according to the direction of displacement or maintained. The light guide is easy to replace and the device is easy to clean in accordance with all hygiene requirements.
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Citations
15 Claims
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1. A medical handpiece for transmitting energy from a laser beam into biological tissue comprising:
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an optical fiber for conveying the laser radiation;
a light guide for radiating the laser energy into the tissue; and
a suction cannula for the biological tissue that is comminuted by the action of the energy and in which the light guide extends;
said optical fiber, light guide and suction cannula being provided in a base body;
for purposes of alignment of the optical axis of the light guide with respect to the longitudinal axis of the suction cannula as well as with respect to the optical axis of the radiation-side end of the fiber, at least one adjusting face being allocated in each instance to the light guide, the suction cannula and the fiber so as to be fixed in place;
at least one of the adjusting faces assigned to the light guide corresponding with an adjusting face assigned to the suction cannula and with an adjusting face assigned to the fiber, and said light guide being displaceable in the axial direction relative to the suction cannula; and
wherein the alignment can be produced or canceled depending on the displacement direction; and
wherein an adjusting face is assigned to the light guide via an adjusting piece, which is fixedly connected with the light guide, stops provided for limiting axial displacement of the light guide and the stops are formed as stop faces vertical to the radiation direction, and at least one stop face is fixed with respect to the light guide and one stop face is fixed with respect to the suction cannula. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A medical handpiece for transmitting energy from a laser beam into biological tissue comprising:
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an optical fiber for conveying the laser radiation;
a light guide separated from said optical fiber for radiating the laser energy into the tissue; and
a suction cannula for the biological tissue that is comminuted by the action of the energy and in which the light guide extends;
said optical fiber, light guide and suction cannula being provided in a base body;
for purposes of automatic alignment of the optical axis of the light guide with respect to the longitudinal axis of the suction cannula as well as with respect to the optical axis of the radiation-side end of the fiber, at least one adjusting face being allocated in each instance to the light guide, the suction cannula and the fiber so as to be fixed in place;
at least one of the adjusting faces assigned to the light guide corresponding with an adjusting face assigned to the suction cannula and with an adjusting face assigned to the fiber, and said light guide being displaceable in the axial direction relative to the suction cannula; and
wherein the alignment can be produced or canceled depending on the displacement direction; and
wherein the adjusting face assigned to the light guide and the adjusting face assigned to the base body or to the suction cannula are formed as circular-conical surfaces with an automatic centering property;
wherein the circular-conical surface assigned to the light guide is formed as an outer surface at an adjusting piece and the circular-conical surface assigned to the suction cannula is formed as an inner surface, and both circular-conical surfaces make contact precisely in the aligned position of the optical axis of the light guide.
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Specification