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Apparatus and method for projecting a subsurface structure onto an object's surface, and calibration method for the apparatus

An object surface and equipment technology, applied in the field of equipment for projecting subsurface structures onto the object surface and the calibration of the equipment, can solve the problems of insufficient performance, hidden under thicker subcutaneous fat or other tissues, etc.

Active Publication Date: 2010-05-12
克里斯蒂医药股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This can be difficult, especially if the blood vessels are small and / or hidden under thick subcutaneous fat or other tissue
The performance of existing imaging systems to help find blood vessels is insufficient

Method used

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  • Apparatus and method for projecting a subsurface structure onto an object's surface, and calibration method for the apparatus
  • Apparatus and method for projecting a subsurface structure onto an object's surface, and calibration method for the apparatus
  • Apparatus and method for projecting a subsurface structure onto an object's surface, and calibration method for the apparatus

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Embodiment Construction

[0072] Skin and some other body tissues reflect infrared light in the near-infrared range of approximately 700 to 900 nanometers, while blood absorbs radiation in this range. Therefore, in the video image of body tissue under infrared irradiation, the blood vessels look like dark lines under the brighter background of surrounding fleshy texture. However, due to the reflective nature of subcutaneous fat, the blood vessels hidden under the thick subcutaneous fat will be difficult or impossible to see clearly under direct light (that is, light is generally incident from a single direction).

[0073] The inventors have determined that when a piece of body tissue with thick subcutaneous fat is imaged under high-scattering infrared light in the near-infrared light range, the contrast between blood vessels and surrounding fleshy texture is greater than that observed under direct infrared light. Is much more obvious. Although the present invention should not be limited by any special th...

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Abstract

An imaging system illuminates an object with infrared light to enhance visibility of buried structure beneath the surface of the object, and projects a visible light image of the buried structure ontothe surface of the object. The system may include an infrared light source for generating the infrared light and a structure for diffusing the infrared light. The diffusing structure may include oneor more layers of diffusing material for diffusing the light. The system further includes a video imaging device for receiving the infrared light reflected from the object and for generating a video image of the buried structure based on the reflected infrared light. The buried structure may be a subcutaneous blood vessel. A calibration procedure is described as well as embodiments for ensuring that the object is maintained in focus at the correct distance.

Description

Technical field [0001] The present invention is mainly related to the generation of scattered infrared light. More specifically, the present invention relates to a system that illuminates an object with scattered infrared light, generates a video image of a buried structure under the surface of the object based on the reflected infrared light, and then projects the image of the buried structure onto the surface of the object . Background technique [0002] Some medical procedures and treatments require doctors to locate blood vessels in the patient's arm or other parts. This can be difficult, especially when the blood vessels are relatively small and / or are hidden under thicker subcutaneous fat or other tissues. The performance of existing imaging systems to help find blood vessels is insufficient. [0003] Therefore, there is a need for a system that enhances the visual contrast between subcutaneous blood vessels and surrounding tissues. Summary of the invention [0004] The af...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B6/00
CPCA61B5/742A61B5/0059G01N21/4795A61B5/489A61B2019/5293A61B2090/366H04N9/3185H04N9/3194
Inventor 赫伯特·D·泽曼冈纳·勒夫霍伊登卡洛斯·弗兰肯约翰·斯诺德格拉斯詹姆斯·A·德朗
Owner 克里斯蒂医药股份有限公司
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