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System and method for laser calibration

A technology of laser system and calibration system, applied in the field of laser calibration

Inactive Publication Date: 2008-07-23
OPTO GLOBAL HLDG PTY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventors of the present application estimate that the optical delivery path may cause a loss of greater than 10%, which is considered to exceed the limit specified by the i-MP clinical protocol

Method used

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  • System and method for laser calibration
  • System and method for laser calibration
  • System and method for laser calibration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061]The prior art laser system shown in Figure 1 is an example of a photo-coagulator laser system. A standard coagulation laser system comprises a coagulation laser unit 10 followed by a light delivery path. As long as the laser unit 10 is present, the laser beam propagates through the light delivery path which prepares the laser beam and delivers it to a delivery point at the far end of the light delivery path. During treatment, delivery points are applied to the patient's eye 100 . The light delivery system typically includes a fiber optic cable 20, a slit lamp adapter 30, a slit lamp microscope 40, a beam splitter 50 and a delivery end (contact lens 60). The contact lens 60 typically contacts (during treatment) the area of ​​the eye to be treated and allows the laser beam to pass through to the eye. Other types of light delivery paths can also be used, including endo-ocular probes, laser indirect ophthalmoscopes, and surgical microscope adapters.

[0062] Figure 2 show...

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PUM

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Abstract

The invention discloses a laser alignment system and method for a laser unit (10) operable to emit laser light directed along a light delivery path (310) to a delivery point at a distal end of the light delivery path bundle. The laser calibration system includes a laser controller operable to drive a laser unit (10) to emit a laser beam according to a desired laser power and a compensation factor related to the light delivery path. The detector (70) generates a measurement signal about the power at the delivery point; the laser calibrator (802) generates an error signal based on the comparison of the expected laser power and the measurement signal to adjust the compensation factor according to the error signal.

Description

technical field [0001] The present invention relates to laser calibration, and more particularly to the calibration of a laser system having an associated optical delivery path to provide a laser beam for treating a patient's cornea. Background technique [0002] Lasers have important uses in medical procedures including surgery, tattoo removal, and vision-related applications. [0003] For example, in the procedure described in WO 02 / 094260 (which is incorporated herein by reference in its entirety), an 810 nm ophthalmic laser is used to perform a procedure known as indocyanine green-mediated photoembolization (i-MP) on the patient's eye. )program of. This requires very precise delivery of the output power of the laser beam to the eye. If the output power deviates by more than 5% from the desired output power needed to treat the eye, this may result in underexposure or overexposure and thus nullify the therapeutic effect of the procedure. [0004] Therefore, lasers used ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J1/32A61B18/22
CPCA61B18/20A61B2017/00725G01J1/32G01J1/4257
Inventor 马里奥·安东尼奥·史蒂芬尼扎巴斯·凯亚都-德-卡斯特罗-奈托亚历山德罗·达米阿尼·莫特朱里安诺·罗斯伊
Owner OPTO GLOBAL HLDG PTY LTD