Laser surgical unit
First Claim
1. A laser surgical unit for use in a surgical operation to perform vaporization and incision of a living tissue, said laser surgical unit comprising:
- a laser generator for generating a laser beam which has a predetermined wavelength;
an optical guide which has a first end optically coupled to said laser generator and a second end opposite said first end for guiding said laser beam from said first end to said second end; and
a contact laser probe which is connected to said second end of the optical guide to emit said laser beam on the living tissue, said contact laser probe having a top end to be contacted with the living tissue and an operating portion contiguous to the top end to direct the laser beam towards the top end, said operating portion including a hydroxyl group dispersed in the operating portion, said hydroxyl group being restricted in said operating portion within a surface area thereof.
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Accused Products
Abstract
In a laser surgical unit having a contact laser probe (1), a hydroxyl group (13) is included in the contact laser probe so that a laser beam is partially absorbed by the hydroxyl group (13) to heat the contact laser probe (1) for transmission to living tissue. Consequently, a coagulation layer is formed in the living tissue along with vaporization and incision. At least a part of the contact laser probe (1) is made of a material which contains the hydroxyl group (13) generally in an amount of between 0.5 and 10 ppm. Alternatively, the hydroxyl group (13) may be included only in a portion adjacent to a surface of a tip portion of the probe (1). As a further alternative, a coating film containing the hydroxyl group (13) may be attached to the tip of the contact laser probe (1). The laser beam preferably has a wavelength between 1.5 and 15 μm. For example, use is made of an Er:YAG laser beam a Ho:YAG laser beam, or a CO2 laser beam. The laser surgical unit of the above-mentioned structure is excellent in manipulatability, capable of safely and uniformly cutting living tissue, and capable of successively performing hemostasis.
110 Citations
10 Claims
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1. A laser surgical unit for use in a surgical operation to perform vaporization and incision of a living tissue, said laser surgical unit comprising:
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a laser generator for generating a laser beam which has a predetermined wavelength; an optical guide which has a first end optically coupled to said laser generator and a second end opposite said first end for guiding said laser beam from said first end to said second end; and a contact laser probe which is connected to said second end of the optical guide to emit said laser beam on the living tissue, said contact laser probe having a top end to be contacted with the living tissue and an operating portion contiguous to the top end to direct the laser beam towards the top end, said operating portion including a hydroxyl group dispersed in the operating portion, said hydroxyl group being restricted in said operating portion within a surface area thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A laser surgical unit for use in a surgical operation to perform vaporization and incision of a living tissue, said laser surgical unit comprising:
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a laser generator for generating a laser beam which has a predetermined wavelength; an optical guide which has a first end optically coupled to said laser generator and a second end opposite said first end for guiding said laser beam from said first end to said second end; and a contact laser probe which is connected to said second end of the optical guide to emit said laser beam on the living tissue, said contact laser probe having an optical guide portion coupled to the second end of the optical guide, a top end to be contacted with the living tissue, and an operating portion which is contiguous to the top end to direct the laser beam towards the top end, said operating portion being bonded to the optical guide portion, said operating portion including a hydroxyl group dispersed in the operating portion, said hydroxyl group being restricted in said operating portion within a surface area thereof. - View Dependent Claims (9, 10)
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Specification