Laser treatment apparatus

A technology of laser therapy and laser beams, which is applied in the direction of cardiac catheterization, catheterization, application, etc., and can solve problems such as not disclosing specific structures

Inactive Publication Date: 2010-02-24
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The above patent documents only describe the combination of therapeutic laser and OCT, but do not disclose the specific structure for connecting the two

Method used

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no. 1 approach

[0081] In the following first to third embodiments, the laser treatment device 11 is set in the auxiliary mode. In the first embodiment, the degree of disappearance of the lesion 17 is judged every time the laser beam has been applied for a predetermined time, and the laser source portion 46 is turned on and off in response to the judgment result. When the catheter assembly 16 is introduced into the blood vessel 12 , the probe unit 22 sweeps over, and a tomographic image 72 of the blood vessel 12 is generated from the signal of the observation probe 23 .

[0082] The tomographic image 72 is displayed on the monitor 76 in real time, such as Figure 4 shown in . A parallel tomographic image 73 and a 3D image 74 are generated from the obtained plurality of tomographic images 72 . The parallel tomographic image 73 selected by the console 38 ( Figure 4 left part of ) and 3D image 74 ( Figure 4 The right part of ) is displayed on the screen of the monitor 76 together with the ...

no. 2 approach

[0097] In a second embodiment, the power level of the laser beam is controlled based on the degree of disappearance of the lesion 17 . As in the first embodiment, an observation image is obtained (step S1), and the brightness value of the lesion 17 is specified (step S2). Then, a treatment area is designated in the blood vessel axial direction of the blood vessel 12 (step S3), and laser irradiation conditions are set (step S4). When the laser radiation operation is performed (step S5), the laser treatment apparatus 11 judges whether or not there is a pixel having a specified brightness value in the laser tomographic image 72 (step S6).

[0098] As a result of the judgment, when the lesion 17 exists in the tomographic image 72 , the lesion disappearance degree judging section 69 judges the thickness of the lesion 17 in the designated laser emission direction, and inputs the thickness into the CPU 68 . The CPU 68 compares the thickness of the lesion 17 with a predetermined thre...

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Abstract

A laser treatment apparatus (11) is provided with a treatment probe (24), an observation probe (23), an image processing section (67), a lesion disappearance degree judgment section (69), and a CPU (68). The treatment probe and the observation probe are disposed in a catheter (21) inserted into a blood vessel (12). The observation probe scans an inner wall of the blood vessel to obtain a tomographic image signal therefrom. The image processing section produces a tomographic image (72) from the tomographic image signal. The lesion disappearance degree judgment section analyzes the tomographic image and judges whether or not a lesion (17) exists. The CPU controls radiation of a laser beam from the treatment probe based on a judgment result of the lesion disappearance degree judgment section.

Description

technical field [0001] The present invention relates to a laser treatment device for irradiating a lesion on an artery wall with a laser beam, and more particularly, to a laser treatment device for a doctor to provide treatment while monitoring a tomographic image of the lesion. Background technique [0002] Stenosis or embolism of coronary arteries is known to cause angina or myocardial infarction. This is atherosclerosis in which the narrowing and embolism of the coronary arteries is mainly caused by plaque consisting mainly of lipids such as cholesterol that adhere to and accumulate on the inner lining of the artery wall. [0003] Regarding the treatment of angina pectoris and myocardial infarction, percutaneous catheter intervention (PCI) is known. In PCI, a catheter is introduced into a coronary artery to ablate plaque or dilate the blood vessel in a narrowed or occluded area (hereinafter referred to as a treatment area). For example, bare metal stents or drug-efflux ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B18/20A61B18/22A61B5/00
CPCA61B5/6852A61B2018/00636A61B5/0073A61B2017/00057A61B18/245A61B18/24A61B5/0066A61B18/20A61B5/02007A61B8/0891A61B8/12A61B8/463A61B8/467A61B2018/00785A61B2018/00982A61B2018/00904A61B2018/00708
Inventor 成行书史锅田敏之茂木秀介
Owner FUJIFILM CORP
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