JP3014758U - TV image device for endoscope - Google Patents

Abstract

(57) [Abstract] [Purpose] In endoscopic surgery, when it becomes invisible due to a large bleeding, the bleeding site can be easily found by switching to an infrared image. A solid-state image sensor D in which detection elements for detecting an image signal obtained from a subject are two-dimensionally arranged, and an imaging lens C for forming an image of the subject on the solid-state image sensor D. A filter device A, which is arranged on the subject side of the imaging lens C and passes only infrared signals from the subject, a drive device B for moving the filter device A, and a signal obtained from the solid-state image sensor D are digitized. A / D for
An endoscopic television image device including a converter device 1, a frame memory device 2 for storing a digitized signal, and a D / A converter device 3 for converting the stored signal into an analog signal.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a television image device for an endoscope used for inspecting and operating a patient in a medical field.

[0002]

[Prior art]

 The conventional television image device for endoscopes uses a solid-state image pickup device such as a television image pickup tube and a CCD, and has a function of displaying a visible image of a subject as it is.

[0003]

[Problems to be solved by the device]

 Conventionally, abdominal incision has always been performed for surgery on the prostate, etc., but with the invention of the endoscope in recent years, it has been replaced by surgery using an endoscope which is less invasive.

What has been described in the related art is to image the visible subject as it is. Therefore, when a large bleeding occurs from a subject during surgery under an endoscope, the image itself becomes bright red due to blood flow, and it is impossible to know where the bleeding is from, and the coagulator, etc. I had no choice but to stop the bleeding by using the coagulation device. However, if the coagulation device should hit the bleeding spot with good luck, otherwise it was necessary to switch from endoscopic surgery to abdominal incision considering the patient's risk.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned object, the television image device for an endoscope according to the present invention is provided with an infrared image device for imaging infrared rays emitted from a bleeding site in addition to the conventional visible light image device. Even if it happens, by switching to the infrared imaging device, it is possible to easily find the bleeding site without making an incision.

[0006]

[Action]

 Under normal endoscopic surgery, since it is performed under visible conditions, it is performed with conventional visible light images, but when it becomes invisible due to large bleeding, it is possible to easily locate the bleeding site by switching to infrared images. Can be found in

[0007] Usually, in the case of endoscopic surgery, in order to secure a visual field from the deterioration of the visual field at the surgical site due to a minute blood flow, it is performed while flowing a perfusate, which cools the surrounding tissue. In the case of large invisible bleeding, the bleeding site is higher than the surrounding tissues due to the temperature of the blood, so it can be easily found by the infrared image.

Further, the visible light image and the infrared light image can be simultaneously viewed in their respective monitors without switching.

[0009]

【Example】

 Examples will be described with reference to the drawings. FIG. 1 shows an embodiment of claim 1. The image of the subject is formed on the solid-state image pickup device D through the image forming lens C, the image signal obtained from the solid-state image pickup device D is digitized by the A / D converter device 1, and then the frame memory device 2 And is output to the video through the D / A converter device 3. Further, switching between the visible light image signal and the infrared image signal is switched by a filter device A attached to the subject side of the imaging lens C, which allows only infrared rays to pass, and a drive device B which moves the filter device.

FIG. 2 shows an embodiment of claim 2. An image of the subject is formed on the solid-state image pickup device D through the image-forming lens C, and a filter device A for transmitting only infrared rays is arranged on the subject side of the image formation lens. The obtained image signal is digitized by the A / D converter device 1.

Further, the filter device A is driven like a shutter in a constant manner, and the visible light image signal is stored in the first frame memory device 5 by the timing controller device 4, and the first D / A converter device 7 Through the first video output.

On the other hand, the infrared image signal is stored in the second frame memory device 6 and output to the second video output through the second D / A converter device 8.

By doing so, the visible image and the infrared image can be simultaneously viewed on each monitor.

[Brief description of drawings]

FIG. 1 is a diagram of claim 1.

FIG. 2 is a drawing of claim 2.

[Explanation of symbols]

 A: Filter device B: Driving device C: Imaging lens D: Solid-state imaging device 1: A / D converter device 2: Frame memory device 3: D / A converter device 4: Timing controller device 5: First frame memory device 6: Second frame memory device 7: First D / A converter device 8: Second D / A converter device

Claims (2)

[Scope of utility model registration request] 1. A solid-state imaging device in which a detection device for detecting an image signal obtained from a subject is two-dimensionally arranged, an imaging lens for forming an image of the subject on the solid-state imaging device, and the combination. A filter device which is arranged on the object side of the image lens and passes only an infrared signal from the object, a drive device for moving the filter device, and an image device for converting the signal obtained from the solid-state element into a video signal. The equipped television image device for endoscopes. 2. A solid-state image sensor having a two-dimensionally arranged detection element for detecting an image signal obtained from the object, an imaging lens for forming an image of the object on the solid-state image sensor, and the combination. A filter device arranged on the object side of the image lens and passing only an infrared signal from the object, a drive device for moving the filter device, a timing controller device for controlling the rotation of the filter, and a visible light obtained from the object. A first frame memory device for storing an image signal; a first D / A converter device for converting a visible light image signal obtained by the first frame memory device into a video signal; A second frame memory device for storing the infrared image signal and a video image of the infrared image signal obtained by the second frame memory device. Second D to convert to signal
/ A converter device for television images for endoscopes.