Endoscopic biopsy sampling device

Abstract

The invention relates to the technical field of sampling devices, in particular to an endoscopic biopsy sampling device which comprises an enteroscope / gastroscope device. The enteroscope / gastroscope device comprises a control handle convenient for a person to hold, a detection tube which is arranged at one connecting end of the control handle and is far away from one end of the control handle and is provided with a camera and a lighting source, and a connecting tube connected with the control handle. The camera is arranged on the detection tube, so that the irradiation direction of the illumination light source and the shooting direction of the camera are controlled, the illumination light source is controlled by the host system to emit illumination light rays with different colors, and an ultrasonic probe is further installed at the end, provided with the camera and the illumination light source, of the detection tube. The device can achieve the depth detection of the tissue of the digestive system, and can detect the distance between the camera and an observation position through the ultrasonic probe, thereby adjusting the light intensity of the illumination light source, and enabling the image shot by the camera to be clearer.

Description

Technical Field

[0001] The invention relates to the technical field of sampling devices, in particular to an endoscopic biopsy sampling device. Background Art

[0002] The digestive tract tumor biopsy detection device usually uses a gastroscope in combination with a biopsy forceps to sample the diseased digestive tract tissue. The gastroscope body is a tube, one end of which is equipped with a camera and an illumination light source, which can be inserted into the digestive tract of the human body through the mouth, nose or anus. The other end is provided with an operating handle for controlling the direction of travel of the tube end with the camera. The other end of the operating handle is connected to a host system, which can observe in real time whether there is a lesion inside the digestive tract through the picture taken by the camera. There is also a biopsy channel inside the tube body, which extends from the inlet end on the handle to the tube end with the camera. The outlet end of the traction wire is inserted along the biopsy channel with one end of the biopsy forceps and the sampling forceps until it reaches the patient's lesion area, and the sampling forceps is driven by the operating handle at the other end of the biopsy forceps to move, so as to complete the sampling of the lesion area. The problems existing in the existing biopsy sampling process are as follows: firstly, the visual display effect is poor, and only the mucosal surface of the digestive system can be roughly observed, and the missed detection rate is high; secondly, the existing lighting source cannot adjust the light intensity according to the position of the camera and the observation area, which may cause the captured picture to appear dark or too bright, affecting the clarity. Summary of the invention

[0003] The present invention provides an endoscopic biopsy sampling device, which can realize deep detection of digestive system tissues by adding an ultrasonic probe at the end of a detection tube, and can simultaneously detect the distance between a camera and an observation position by using the ultrasonic probe, thereby adjusting the light intensity of an illumination light source, making the picture taken by the camera clearer.

[0004] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0005] An endoscopic biopsy sampling device includes an intestinal / gastroscopic device, wherein the intestinal / gastroscopic device includes an operating handle that is easy for a person to hold in hand, a detection tube with a camera and an illumination light source at one connection end of the operating handle and away from one end of the operating handle, and a connecting tube at another connection end of the operating handle and connected to a host system at one end away from the operating handle. When in use, the operating handle is used to control the direction of movement of the detection tube, thereby controlling the irradiation direction of the illumination light source and the shooting direction of the camera. The illumination light source is controlled by the host system to emit illumination light of different colors. An ultrasonic probe is also installed at one end of the detection tube with the camera and the illumination light source, and the ultrasonic probe is used to provide the host system with tissue layered image information of the observation position.

[0006] Preferably, the ultrasonic probe is also used to detect the distance between the camera and the observation area, and the host system controls the luminous intensity of the illumination light source according to the distance information provided by the ultrasonic probe, so that the brightness of the picture taken by the camera is within a reasonable range.

[0007] Preferably, the different colors of the illumination light source include at least white light, blue light and green light.

[0008] Preferably, it also includes a biopsy channel, the inlet end of the biopsy channel is located on the handle, and the outlet end of the biopsy channel is located at the end of the detection tube where the illumination light source is installed.

[0009] Preferably, the operating handle is provided with an ultrasound control button for starting or stopping the ultrasound probe.

[0010] Preferably, the detection area covered by the ultrasonic probe covers the real-time shooting area of ​​the camera.

[0011] Preferably, the detection area of ​​the ultrasonic probe is larger than the real-time shooting area of ​​the camera.

[0012] Preferably, the detection area of ​​the ultrasonic probe is equal to the real-time shooting area of ​​the camera.

[0013] The beneficial effect of the present invention is that by installing an ultrasonic probe at the end of the detection tube, and the ultrasonic probe is used to detect the observation position of the camera, after the camera finds a suspicious lesion, the ultrasonic probe can be used to detect the suspicious lesion area, thereby directly obtaining a tissue layered image of the suspicious lesion area, and combining the surface image taken by the camera with the depth layered image of the tissue detected by ultrasound to determine whether the area is a lesion area.

[0014] By setting up an ultrasonic probe, the distance between the ultrasonic probe and the observation position can be known in real time, so as to adjust the light intensity of the illumination light source so that the brightness of the captured image is within a reasonable range.

[0015] The lighting source can be controlled in different colors by the host system. Since different colors of light have different emphasizing effects on the capillaries and microvessels on the mucosal surface, using light sources of different colors can more clearly observe whether there are lesions on the mucosal surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is the overall structural schematic diagram of the present invention:

[0018] Figure 2 For the present invention Figure 1 The enlarged schematic diagram of point A in the middle;

[0019] Figure 3 It is a schematic diagram of the detection area of ​​the camera and the ultrasonic probe of the present invention;

[0020] Figure 4 A flow chart of controlling light intensity by the host system of the present invention;

[0021] Figure 5 It is a schematic diagram of an existing ultrasonic detection device;

[0022] Figure 6 for Figure 5 A magnified schematic diagram of point B in the middle.

[0023] In the figure, 1. operating handle; 2. detection tube; 3. connecting tube; 4. inlet end; 5. traction wire; 6. trigger handle; 7. sampling clamp; 8. knob; 9. water outlet button; 10. adsorption button; 11. air supply button; 12. camera; 13. lighting source; 14. water outlet hole; 15. adsorption hole; 16. outlet end; 17. ultrasonic probe; 18. host system; 19. ultrasonic control button; 20. circumferential probe; 21. housing; 22. micro motor; 23. mounting block; 24. transducer. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0025] refer to Figure 1 and Figure 2In order to enable those skilled in the art to fully understand the prior art of the present invention, the prior art part of the present invention is specially described. The existing endoscopic biopsy sampling device consists of two parts, one of which is a colonoscopy / gastroscope device (a colonoscope or a gastroscope, both of which have the same structure, but are used in different ways. The colonoscope enters the lower digestive tract of the human body from the anus, and the gastroscope enters the upper digestive tract of the human body from the oral cavity or nasal cavity). The second is a biopsy forceps. The colonoscopy / gastroscope device includes a manipulation handle 1, and one connecting end of the manipulation handle 1 is connected to a detection tube 2 that can be inserted into the human body. A camera 12 and an illumination light source 13 are installed at one end of the detection tube 2 away from the manipulation handle 1 (for the convenience of description, this end is referred to as the installation end hereinafter), and the other connecting end of the manipulation handle 1 is connected to the detection tube 2 that can be inserted into the human body. The connecting tube 3 is connected to the host system 18 (the host system 18 is used to control the illumination light source 13 to emit light, and can receive the image of the camera 12 and display it at the same time), wherein the host system 18 is also used to control the focal length of the camera 12 to realize the zooming in or out of the image during the shooting process. The host system 18 controls the zooming in and out of the focal length of the camera 12, which belongs to the existing technology and is used on mobile phones or computers. It will not be elaborated here. When in use, the twisting direction of the mounting end of the detection tube 2 can be controlled by the knob 7 on the operating handle 1 (how to control the twisting is the existing technology), thereby controlling the detection direction of the detection tube 2. The operating handle 1 and the detection tube 2 are also provided with a biopsy channel that can be used in conjunction with the biopsy forceps. The biopsy channel is from the inlet end of the operating handle 1 4 extends all the way to the outlet end 16 of the mounting end of the detection tube 2. During use, the enteroscope / gastroscope device mainly provides image information for medical personnel to find out whether there is a suspicious lesion area. The biopsy forceps is used to take samples from the suspicious lesion area. The biopsy forceps includes a traction wire 5, a sampling forceps 7 at one end of the traction wire 5 and an operating trigger handle 6 at the other end of the traction wire 5. When sampling, the end of the traction wire 5 with the sampling forceps 7 is inserted into the inlet end 4 of the biopsy channel. By pushing the traction wire 5, the sampling forceps 7 moves inside the biopsy channel until the sampling forceps 7 leaks out of the outlet end 16 of the detection tube 2. Then, the knob 7 on the operating handle 1 is used to control the movement of the mounting end of the detection tube 2 to drive the sampling forceps 7 to reach the suspicious lesion area. Then, the trigger handle 6 is controlled to perform sampling. Action, the sampling forceps 7 clamps the tissue of the suspicious lesion area, and the biopsy forceps are taken out from the biopsy channel to complete the sampling. The installation end of the existing intestinal / gastroscope is also provided with an adsorption hole 15 and a water outlet hole 14 (some also have an air outlet), through the connecting tube 3 and the water supply device and the negative pressure device (some also have an air supply device, such as a gastroscope device, which needs to be inflated to expand the stomach for stomach examination), and the operating handle 1 is provided with a water outlet button 9 and an adsorption button 10 for controlling water outlet and adsorption, so as to achieve the effect of flushing and adsorption, which is irrelevant to the inventive point of the present invention and belongs to the prior art, and will not be elaborated here. Those skilled in the art only need to know that the existing digestive tract tumor biopsy sampling device, by installing an illumination light source 13 and a camera 12 at the end of the detection tube 2,It can observe the surface of the digestive tract, and when a suspicious lesion is found, it can be sampled by using biopsy forceps.

[0026] The above-mentioned existing technology has a defect that the existing lighting source 13 is mostly white light. Although it can observe the surface of the digestive tract mucosa, it has a poor effect on observing the capillaries or tiny blood vessels on the mucosal surface, making it difficult to discover hidden lesions.

[0027] Based on this, the present invention controls the illumination light source 13 to irradiate light of different colors through the host system 18, which can make the display effect of capillaries and tiny blood vessels better. The main principle is that most tumors, such as cancer, need blood vessels to supply nutrients for cell reproduction, so a large number of blood vessels will appear in the lesion area. Detection by light of different colors can more accurately find the lesion area. For example, among the three primary colors of light, red, green and blue, blue and green are easily absorbed by hemoglobin in the blood. Blue light is absorbed by the surface capillaries and appears brown. Deep blood vessels absorb green light and appear blue. By comparing photos taken with light of different colors, the vascular morphology that is difficult to see can be observed through high contrast emphasis. The discovery of tiny lesions by light of different colors has been applied in reality, such as NBI narrow-band imaging technology. When white light is used to shoot the observation area, blue and green wavelengths of light processed by filtering technology are also used for observation to achieve detection of tiny lesions. NBI narrow-band imaging technology is currently a more advanced technology in medical endoscopic detection.

[0028] Even though the existing advanced gastroscopes use NBI narrow-band imaging technology, their detection depth is limited and they can only observe the surface of the gastrointestinal mucosa. For example, when the existing gastroscope devices detect the human stomach, they also use lights of different colors to shoot suspicious areas. However, it is still impossible to accurately determine whether the area has lesions only through the surface image. At this time, other detection schemes are needed to further detect the suspicious lesion area, such as the common gastroscope ultrasound, which uses an ultrasonic detection device to detect the inside of the stomach and realize the detection of the internal tissue structure of the stomach.

[0029] like Figure 5 and Figure 6, the existing ultrasonic detection device shown includes a traction wire 5 and a circumferential probe 20 (circumferential detection is achieved by the rotation of a motor), the circumferential probe 20 has a shell 21 (made of sound-transmitting material), a micro motor 22 is arranged inside the shell 21, the output rotor of the micro motor 22 has a mounting block 23, and the transducer 24 is inclined or horizontally located on the mounting block 23. When in use, the circumferential probe 20 is inserted from the inlet end 4 of the biopsy channel on the operating handle 1 of the intestinal / gastroscopic device until the circumferential probe 20 is exposed from the outlet end 16 of the detection tube 2, and the micro motor 22 drives the transducer 24 to rotate at a high speed to detect the stomach area. The defect of this method is that the detection direction of the existing ultrasonic detection device is inconsistent with the detection direction of the camera 12. The shooting directions are inconsistent (the camera 12 shoots along the axial direction of the mounting end, while the existing ultrasonic detection device detects along the radial direction of the mounting end, and the detection directions of the two are perpendicular or nearly perpendicular to each other), and it is impossible to ensure that the area detected by the ultrasonic detection device is the suspected lesion area photographed by the gastroscope. Based on this, the present invention adds an ultrasonic probe 17 to the mounting end of the existing detection tube 2, and the detection direction of the probe is consistent with the shooting direction of the camera 12. Therefore, when the camera 12 finds a suspicious lesion area, the ultrasonic probe 17 can directly detect the photographed area to ensure that the detected area is consistent with the suspicious lesion area found by the camera 12, so that it can accurately determine whether the area has lesions.

[0030] It needs to be further explained that, although the ultrasonic probe 17 added by the present invention and the existing ultrasonic detection device both utilize the ultrasonic principle for detection, the ultrasonic probe 17 of the present invention is directly arranged on the mounting end, and the detection direction of the ultrasonic probe 17 is consistent with the shooting direction of the camera 12. The prior art uses a biopsy channel in conjunction with an ultrasonic detection device, and its detection direction is inconsistent with the shooting direction of the camera 12. Obviously, the ultrasonic probe 17 added by the present invention has a detection direction that is consistent with the shooting direction of the camera 12. Ultrasonic detection can be directly performed on the suspicious lesion area discovered by the camera 12 to obtain the tissue layered image of the suspicious lesion area without adjusting the angle of the mounting end, thereby achieving the effect of quickly checking whether the suspicious lesion area discovered by the camera 12 has lesions.

[0031] Furthermore, since the detection direction of the added ultrasonic probe 17 is consistent with the shooting direction of the camera 12, the ultrasonic probe 17 is also used to detect the distance between the observation area of ​​the camera 12 and the camera 12, and it can transmit the distance signal to the host system 18. The host system 18 can control the luminous intensity of the illumination light source 13 according to the distance signal (adjust the illumination intensity in combination with the current focal length of the camera 12). That is, when the traditional camera 12 shoots the observation area, when the camera 12 shoots the observation area at a longer distance and a shorter distance at the same focal length, if the distance to the observation area is farther, there will be less light exposure. In the observation area, the brightness of the displayed image will be darker, and most of the image area will appear gray. If the camera 12 is closer to the observation area, more light will be irradiated on the observation area. At this time, the brightness of the displayed image will be too bright, and most of the image will appear as bright light balls. Therefore, the host system 18 detects the distance from the observation area through the ultrasonic probe 17 and combines the current focal length of the camera 12 to adjust the luminous intensity of the irradiating light source, so that the brightness of the displayed image is within an appropriate range, which is convenient for the doctor to observe the image. This is also the second benefit of setting the ultrasonic probe 17 so that the detection direction is consistent with the shooting direction of the camera 12.

[0032] To sum up, by directly adding an ultrasonic probe 17 at the installation end with a detection direction consistent with the shooting direction of the camera 12, not only can the suspected lesion area be quickly and directly detected by ultrasound, but the ultrasonic probe 17 can also be used to detect the distance between the observation area and the camera 12, so as to adjust the luminous intensity of the illumination light source 13, so as to avoid the camera 12 changing the distance from the observation area, causing the captured picture to be too bright or too dark, thereby affecting the clarity of the picture.

[0033] Furthermore, an ultrasound control button is provided on the operating handle 1 for controlling the ultrasound probe 17 to be in operation or to stop working. That is, the ultrasound probe 17 can be in operation throughout the digestive tract examination. It can also be turned on for detection only when the camera 12 finds uncertain lesions and ultrasound detection is needed to further determine whether there is a lesion, or when a lesion is found and it is determined whether the degree of the lesion has expanded in the depth direction, so as to further obtain tissue layer image information and further determine the situation of the observation area.

[0034] Furthermore, in order to make the ultrasonic detection area fully detect the shooting area of ​​the camera 12 and ensure that the observation position shot by the camera 12 can be completely directly covered by the ultrasonic probe 17, the detection coverage area of ​​the ultrasonic probe 17 should not be smaller than the coverage area shot by the camera 12, and the coverage area shot by the camera 12 is within the coverage area of ​​the ultrasonic probe 17. Figure 3In the figure, the coverage area captured by the camera 12 is S1, the detection area covered by the ultrasonic probe 17 is S2, and S1 is inside S2, thereby ensuring that the area captured by the camera 12 can be directly covered by the area detected by the ultrasonic probe 17. Of course, as long as the area captured by the camera 12 is not larger than the coverage area detected by the ultrasonic probe 17, S1 can also be equal to S2.

[0035] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An endoscopic biopsy sampling device, comprising an intestinal / gastroscopic device, the intestinal / gastroscopic device comprising a joystick (1) that is convenient for a person to hold, a detection tube (2) having a camera (12) and an illumination light source (13) at one end of the joystick (1) and away from the end of the joystick (1), and a connection tube (3) at another end of the joystick (1) and away from the end of the joystick (1) connected to a host system (18), wherein the joystick (1) is used to control the moving direction of the detection tube (2), thereby controlling the irradiation direction of the illumination light source (13) and the shooting direction of the camera (12), It is characterized in that The illumination light source (13) is controlled by a host system (18) to emit illumination light of different colors. The detection tube (2) has a camera (12) and an illumination light source (13). An ultrasonic probe (17) is also installed at one end. The ultrasonic probe (17) is used to provide the host system (18) with tissue layer image information of the observation position.

2. An endoscopic biopsy sampling device according to claim 1, It is characterized in that The ultrasonic probe (17) is also used to detect the distance between the camera (12) and the observation area. The host system (18) controls the luminous intensity of the illumination light source (13) according to the distance information provided by the ultrasonic probe (17), so that the brightness of the picture taken by the camera (12) is within a reasonable range.

3. An endoscopic biopsy sampling device according to claim 2, It is characterized in that The different colors of the illumination light source (13) include at least white light, blue light and green light.

4. An endoscopic biopsy sampling device according to claim 1, It is characterized in that It also includes a biopsy channel, the inlet end (4) of the biopsy channel is located on the handle, and the outlet end (16) of the biopsy channel is located at the end of the detection tube (2) where the illumination light source (13) is installed.

5. An endoscopic biopsy sampling device according to claim 1, It is characterized in that The operating handle (1) is provided with an ultrasound control button for starting or stopping the ultrasound probe.

6. An endoscopic biopsy sampling device according to claim 1, It is characterized in that The detection area covered in real time by the ultrasonic probe covers the real-time shooting area of ​​the camera (12).

7. An endoscopic biopsy sampling device according to claim 6, It is characterized in that The detection area of ​​the ultrasonic probe is larger than the real-time shooting area of ​​the camera (12).

8. An endoscopic biopsy sampling device according to claim 6, It is characterized in that The detection area of ​​the ultrasonic probe is equal to the real-time shooting area of ​​the camera (12).

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