CN204445794U - Endoscope and endoscope extend imaging device - Google Patents

Abstract

The utility model relates to an endoscope and an endoscope extension imaging device, wherein the endoscope extension imaging device is movably installed in the working channel of the endoscope, and the endoscope extension imaging device includes a An extension tube in the working channel of the endoscope and capable of protruding out of the working channel, and an image transmission unit and a light guide unit built in the extension tube. When performing a biopsy, compared with the larger diameter of the sleeve of the existing endoscope, it can only extend into a limited part of the tissue. The existing endoscope biopsy channel is directed to the direction of the biopsy tissue, and the biopsy forceps The process of clamping tissue cannot be observed by the endoscope, and the clamping is not accurate enough. The endoscope of the utility model is further equipped with an endoscope extension imaging device in the working channel, which can penetrate into thinner biopsies. Probing and checking in the middle, there will be no problem of improper clamping.

Description

Endoscopes and Endoscope Extended Imaging Devices

technical field

The utility model relates to the field of medical machinery, in particular to an endoscope and an endoscope extension imaging device.

Background technique

Endoscope is an optical device that can be inserted into the internal organs of the human body to directly observe the tissue shape of the internal organs of the human body from the outside of the human body. It is widely used in the diagnosis and Treatment has a history of more than two hundred years from its appearance to the present. With the development of science and technology, the types and levels of endoscopes have developed by leaps and bounds, and have developed from rigid endoscopes and soft endoscopes to electronic endoscopes and ultrasonic electronic mirrors.

Flexible endoscopes use soft optical fibers to guide light sources and images, called fiber optic endoscopes. The main types are gastrointestinal endoscopy, lung endoscopy, kidney stone endoscopy and so on. The endoscope is developed with the appearance of the optical fiber, and the optical fiber endoscope is composed of a head end (the doctor holds the manipulation end), a distal end (the end inserted into the organ) and a curved part. The curved part is a sealed soft sleeve, and there are two kinds of optical fiber beams inside, the guide beam and the image beam, which are used for illumination and imaging respectively. In general, endoscopes also have a working channel for inserting surgical instruments, such as biopsy forceps, so the cannula should be small and the working channel large. In order to facilitate detection and operation, endoscopes are becoming ultra-thin (the diameter of gastrointestinal endoscopes is 7.9 to 12.8 mm, and in recent years, endoscopes that can observe deep embolism and kidney stones have appeared, with a diameter of 0.19 mm). develop.

When performing a "biopsy" (biological tissue examination), it is necessary to take out a biopsy from the patient's body, such as cutting, clamping or puncturing, which is the most important part of diagnostic pathology, so it is very important to observe, detect and accurately clamp the biopsy. The essential. But, refer to Fig. 1, have shown the use schematic diagram of existing endoscope; As shown in Fig. 1, some biopsies 4 ' are not only small but also position away from cavity channel. As shown in Figure 2, the diameter of the sleeve tube 1' of the existing endoscope is too large, and it can only be stretched into its peripheral channel 6', and stretched to the vicinity of the tissue, so that the biopsy channel of the existing endoscope is directed to the biopsy tissue direction, after the puncture needle 7' punctures, the biopsy forceps clamps the tissue, and the process of the biopsy forceps clamping can no longer be observed by the endoscope. If the biopsy body is not on the cavity, but inside the human tissue far away from the cavity, which is beyond the illumination and visual range of the endoscope, the process of biopsy forceps to take the biopsy is very dependent on the blindness of the doctor's experience. During the extraction process, normal tissue parts may be clamped because the internal conditions cannot be observed, and clear histopathological specimens cannot be obtained, which affects clinical diagnosis and treatment.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art, provide an endoscope and an endoscope extension imaging device, and solve the process of taking tissue with biopsy forceps after the puncture needle is punctured in the prior art. Can not be observed, there is a problem of blind spots.

The technical solution to achieve the above object is to provide an endoscope extension imaging device, the endoscope extension imaging device is movably installed in the working channel of the endoscope, and the endoscope extension imaging device includes a An extension tube in the working channel of the endoscope and capable of protruding out of the working channel, and an image transmission unit and a light guide unit built in the extension tube.

The further improvement of the endoscope extended imaging device of the utility model is that the image transmission unit includes: an optical fiber bundle composed of a plurality of optical fibers, an objective lens and an eyepiece arranged at both ends of the optical fiber bundle.

The further improvement of the endoscope extended imaging device of the utility model is that the light guide unit includes: a light guide fiber bundle composed of a plurality of light guide fibers, and a light guide lens arranged at the end of the light guide fiber bundle.

The further improvement of the endoscope extension imaging device of the utility model lies in that the distal end of the extension tube can be adjusted and bent.

The utility model also provides an endoscope, which includes a sleeve, an imaging channel penetrating along the axial direction of the sleeve and provided with an imaging device inside, and a biopsy forceps penetrating along the axial direction of the sleeve. The endoscope working channel is characterized in that: the endoscope further includes an endoscope extension imaging device as described above.

A further improvement of the endoscope of the utility model is that the image transmission unit includes: an optical fiber bundle composed of a plurality of optical fibers, an objective lens and an eyepiece arranged at both ends of the optical fiber bundle.

A further improvement of the endoscope of the utility model lies in that the light guide unit includes: an optical fiber bundle composed of a plurality of optical fibers, and a light guide lens arranged at the end of the optical fiber bundle.

A further improvement of the endoscope of the utility model lies in that the distal end of the extension tube can be adjusted and bent.

The beneficial effects of the utility model endoscope:

When performing a biopsy, compared with the existing endoscope, the cannula has a larger diameter and can only penetrate into a limited part of the tissue. When forceps a smaller part of the biopsy, there are blind spots and the forceps are not accurate enough. , and, when the existing endoscope biopsy channel is directed to the direction of the biopsy tissue, the biopsy forceps clamps the tissue after the puncture needle punctures, and the biopsy forceps clamps the process of taking the problem that the endoscope has been unable to observe, the utility model endoscopic The mirror is equipped with a movable imaging device in the working channel. After the puncture needle is punctured, the extension tube establishes a channel at the puncture position. The imaging unit and the light guide unit can observe the tissue to be clamped through the channel to determine whether it is the required biopsy.

Description of drawings

Fig. 1 is the use schematic diagram of existing endoscope;

Fig. 2 is the use schematic diagram of existing endoscopic puncture needle;

Fig. 3 is the structural representation of the utility model endoscope;

Fig. 4 is the use schematic diagram of a kind of embodiment of endoscope of the present invention; And

Fig. 5 is a schematic view of another embodiment of the endoscope of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

The utility model provides an endoscope, and the endoscope of the utility model will be described below in conjunction with the accompanying drawings.

Generally, an endoscope is composed of three parts: a hand-held manipulation end, an organ insertion end, and a curved part. The curved part is a sealed soft sleeve that transmits light sources and images with flexible optical fibers. Refer to Fig. 3, have shown the structural representation of the utility model endoscope extension imaging device; As shown in Fig. 3, the utility model endoscope comprises: sleeve pipe 1, imaging channel 2 and working channel 3, and endoscope further comprises An endoscope extension imaging device.

Wherein, the endoscope extension imaging device is movably installed in the working channel 3 of the endoscope. The tube 30 , and the image transmission unit 300 and the light guide unit 301 disposed in the extension tube 30 , furthermore, the distal end of the extension tube 30 is adjustable and bendable.

Specifically, the image transmission unit 300 includes an optical fiber bundle composed of a plurality of optical fibers. The optical fiber bundle is composed of tens of thousands of optical fibers. The relative positions of the first and last ends of the eyepiece are always the same, so there is no confusion about the position of reconstructing a mosaic image on the eyepiece.

The light guide unit 301 also includes an optical fiber bundle composed of a plurality of optical fibers. The optical fiber bundle is also composed of tens of thousands of optical fibers. The difference is that a light guide lens is arranged at the end of the optical fiber bundle. Pathological tissue illumination. In this embodiment, there is one image transmission unit 300 and two light guide units 301 in the working channel 3 , but this is not limited thereto, and the number of light guide units 301 can be determined according to actual conditions.

The sleeve 1 is provided with an imaging channel 2 and a working channel 3 penetrating in the axial direction of the sleeve 1 , and the imaging channel 2 is provided with an imaging device. Specifically, the imaging device includes: an imaging tube 20 disposed in the imaging channel 2 , and an image transmission unit 200 and a light guide unit 201 disposed in the imaging tube 20 . The image transmission unit 200 in the imaging device includes an optical fiber bundle composed of a plurality of optical fibers. The optical fiber bundle is composed of tens of thousands of optical fibers. The objective lens and the eyepiece are respectively arranged at the two ends of the optical fiber bundle. The relative positions of the first and last ends of the 2 are always consistent, so there is no confusion about the position of reconstructing a mosaic image on the eyepiece.

The light guide unit 201 also includes an optical fiber bundle composed of multiple optical fibers. The optical fiber bundle is also composed of tens of thousands of optical fibers. The difference is that a light guide lens is arranged at the end of the optical fiber bundle. The light guide unit 201 is used for transmitting Light, illuminating pathological tissue.

In this embodiment, there is one image transmission unit 200 and two light guide units 201 in the imaging device, but the present invention is not limited thereto, and the number of light guide units 201 can be determined according to actual conditions.

The working channel 3 can also be used for penetrating biopsy forceps and an endoscope extension imaging device, wherein the biopsy forceps are used to forceps pathological specimens.

Referring to Fig. 4, a schematic view showing the use of an embodiment of the endoscope of the present invention, in conjunction with Fig. 3 and Fig. 4, the endoscope extends to the vicinity of the tissue, and the channel opening of the working channel 3 is directed to the biopsy tissue 4 direction, after the puncture needle punctures the tissue, the extension tube 30 penetrates in to establish a channel at the puncture position, the light guide unit 301 in the extension tube 30 of the endoscope extension imaging device illuminates the tissue, and the image transmission unit 300 images the biopsy 4, And pass it out, judge whether it is the desired biopsy body, then extract the extension tube 30 out of the working channel 3, and set the biopsy forceps in the working channel 3, and then use the biopsy forceps to clamp the biopsy body 4, which is very accurate and efficient.

Another situation is that some biopsies 4 are located at deeper branch lumens 5, and the branch lumens 5 are very small, and the diameter of the sleeve tube 1 of the endoscope is too large, so it can only extend into its peripheral passage 6 At this time, if you just use the biopsy forceps to grasp in the working channel 3 based on your feeling, you may not be able to observe the specific conditions of the biopsy body 4 and grasp the surrounding normal tissue parts. It is not only detrimental to health, but also cannot obtain clear histopathological specimens, which affects clinical diagnosis and treatment.

Referring to Fig. 5, it shows a schematic view of another embodiment of the endoscope of the present invention. In conjunction with Fig. 3 and Fig. 5, the endoscope of the present invention first moves through the working channel 3 to extend the endoscope. Imaging device, the extension tube 30 of the endoscope extension imaging device can protrude out of the working channel 3 and enter the small branch cavity 5. After the puncture needle is punctured, the extension tube 30 establishes a channel at the puncture position, and the endoscope extension imaging device The light guide unit 301 in the extension tube 30 illuminates the tissue, and the image transmission unit 300 images the biopsy 4 and transmits it out to judge whether it is the desired biopsy 4, and then pulls the extension tube 30 out of the working channel 3 and performs It is very accurate and efficient to put biopsy forceps in the channel 3, and then use the biopsy forceps to clamp the biopsy body 4.

The beneficial effects of the utility model endoscope and endoscope extension imaging device are:

When performing a biopsy, compared with the existing endoscope, the cannula has a larger diameter and can only penetrate into a limited part of the tissue. When forceps a smaller part of the biopsy, there are blind spots and the forceps are not accurate enough. , and, when the existing endoscope biopsy channel is directed to the direction of the biopsy tissue, the biopsy forceps clamps the tissue after the puncture needle punctures, and the biopsy forceps clamps the process of taking the problem that the endoscope has been unable to observe, the utility model endoscopic The endoscope extension imaging device is assembled in the working channel. After the puncture needle is punctured, the extension tube establishes a channel at the puncture position. The image transmission unit and the light guide unit can observe the tissue to be clamped through the channel, and judge whether it is the required biopsy body.

The utility model has been described in detail above in conjunction with the embodiments of the accompanying drawings, and those skilled in the art can make various changes to the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation to the utility model, and the utility model shall take the scope defined by the appended claims as the protection scope of the utility model.

Claims (8)

1. An extended imaging device for an endoscope, characterized in that: the extended imaging device for an endoscope is movably installed in the working channel of the endoscope, and the extended imaging device for the endoscope includes a An extension tube in the working channel and capable of protruding out of the working channel, and an image transmission unit and a light guide unit built in the extension tube. 2 . The endoscope extension imaging device according to claim 1 , wherein the image transmission unit comprises: an optical fiber bundle composed of a plurality of optical fibers, an objective lens and an eyepiece arranged at both ends of the optical fiber bundle. 3 . 3 . The endoscope extension imaging device according to claim 1 , wherein the light guiding unit comprises: a fiber optic bundle composed of a plurality of optical fibers, and a light guiding lens arranged at the end of the fiber optic bundle. 4 . 4. The endoscope extension imaging device according to claim 1, 2, or 3, characterized in that the distal end of the extension tube is adjustable and bendable. 5. An endoscope, comprising a cannula, an imaging channel penetrating along the axial direction of the cannula, and an imaging channel provided with an imaging device inside, and an endoscope penetrating along the axial direction of the cannula for biopsy forceps to pass through The endoscope working channel is characterized in that: the endoscope further comprises an endoscope extension imaging device according to claim 1. 6. The endoscope according to claim 5, wherein the image transmission unit comprises: an optical fiber bundle composed of a plurality of optical fibers, an objective lens and an eyepiece arranged at two ends of the optical fiber bundle. 7 . The endoscope according to claim 5 , wherein the light guiding unit comprises: an optical fiber bundle composed of a plurality of optical fibers, and a light guiding lens arranged at the end of the optical fiber bundle. 7 . 8. The endoscope according to claim 5, 6, or 7, wherein the distal end of the extension tube is adjustable and bendable.