Endoscope

An endoscope and lens technology, applied in the field of endoscope, can solve the problem of separation of illumination and observation light paths
CN1230115CInactive Publication Date: 2005-12-07INNER VISION IMAGING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INNER VISION IMAGING
Publication Date
2005-12-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

An endoscope assembly is disclosed having a housing adapted to be manipulated by medical personnel, such as a surgeon. An elongated lens tube has one end secured to the housing while an elongated stage is removably secured to the housing so that the stage encompasses and is coaxial with the tube. The stage together with the lens tube are adapted for insertion into the cavity of a body. A lens assembly provided within the lens tube relays the optical image from the free end of the stage to the housing. A lens assembly within the housing, furthermore, varies the magnification of the image between macroscopic magnification and microscopic magnification in which tissue may be examined on a cellular level. For macroscopic magnification, white light is transmitted through the lens tube as well as reflected back from the target tissue through the lens tube and to the housing. For microscopic examination, laser radiation is utilized in lieu of the white light illumination. A line scanning confocal assembly contained within the housing enables microscopic examination of the target tissue at varying levels into the tissue from the end of the stage.
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Description

technical field

[0001] The present invention relates generally to medical instruments, and more specifically to an endoscope. Background technique

[0002] Laparoscopic surgery has gained increasing acceptance, especially for surgeries involving the abdominal cavity. In this surgery, one or more incisions are made through the patient's skin. Thereafter, various medical instruments including an endoscope are inserted through the incision into a body cavity such as the abdominal cavity.

[0003] In order for the surgeon to examine the abdominal cavity, the general surgeon uses an endoscope, which is inserted into the abdominal cavity through a cannula. Known endoscopes generally include an elongated tube with one or more fixed lenses. These lenses provide an optical image of the interior of the body cavity to an eyepiece or other display device, allowing a surgeon outside the body to see the interior of the body cavity. Illumination of the endoscope is typically provided b...

Claims

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