CN102860810B - Medical magnetic capsule endoscope system - Google Patents

Abstract

The invention provides a medical magnetic capsule endoscope system, which includes a capsule endoscope, a receiving jacket, an external workstation, and a capsule positioner. The capsule endoscope includes a transparent capsule shell, an imaging device, a lighting device, a photoelectric switch device, an image Information processing circuit, radio frequency transmission device, power supply device, magnetic field sensor, small magnet. Capsule endoscope, receiving jacket, in vitro workstation and capsule positioner form a system through induction of magnetic field and transmission of wireless signals. With the work of the whole system, the information of the capsule endoscope in the human body can be displayed in real time on the special display for medical images of the in vitro workstation, and the movement of the capsule endoscope in the human body can be controlled through the software platform in the in vitro workstation. The invention realizes the real-time display function of the capsule endoscope image and also realizes the controllable and positioning function, which has a qualitative leap compared with the previous technology.

Description

A medical magnetic capsule endoscope system

technical field

The present invention relates to a system device, in particular to a medical system device.

Background technique

Conventionally known capsule endoscopes include an imaging unit equipped with a solid-state imaging device, an illumination device using LEDs, and a wireless communication device, etc., and are built into a capsule case of a size that can be swallowed from the mouth. This capsule endoscope can photograph the stomach, intestines, etc. while passing through the body cavity when the subject swallows it from the mouth. Typically, the capsule endoscope with the above structure converts the image of the illuminated surface captured by the camera unit into an electrical signal, and sends it to the outside through the wireless sending device, and the sent signal is received by the external receiving device, and then displayed on the displayed on the device. In the painless and non-invasive state of the human gastrointestinal tract, medical personnel can diagnose gastrointestinal diseases of the subject according to the images displayed on the display device.

Capsule endoscopes with the above functions usually rely on the peristalsis of the living intestine to drive the movement of the wireless endoscope in the body, and factors such as the speed of peristalsis, the effect of light, and the stomach and intestines will directly lead to the randomness and inconsistency of the captured image results. certainty, and in order to reduce the repeatability of captured images and reduce the probability of missing lesions, etc., a swallow-type capsule endoscope as shown in Patent Document 1 International Publication No. 01/35813 has been proposed. The capsule endoscope can be controlled by applying drive to each functional unit of the capsule endoscope. However, a capsule endoscope with a controllable drive method is used, and the method of driving the capsule endoscope with an external magnetic field means that an external package is used, and a reed contact switch is used inside the capsule. The reed switch remains off and turns on when the strength of the external magnetic field decreases. Therefore, the capsule endoscope is not driven while the capsule endoscope is in the package, and starts to be driven while being isolated from the package having the permanent magnet when the capsule endoscope is swallowed. However, in such a device, it takes a certain amount of time to take the capsule endoscope out of the package until the examinee swallows it, and during this time all functions of the capsule endoscope have been driven, such as the shooting function and wireless function, etc. , and send the image of this shooting action through the wireless function, etc., it is judged as an invalid image during the diagnosis process, and the diagnosis process of the capsule endoscope cannot be well completed.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the existing defects and provide a medical magnetic capsule endoscope system, which can determine the position of the capsule endoscope moving in the digestive tract at any time in the digestive tract.

In order to solve the problems of the technologies described above, the present invention provides the following technical solutions:

The invention provides a medical magnetic capsule endoscope system, which includes a capsule endoscope, a receiving jacket, an in vitro workstation, and a capsule positioner. The capsule endoscope includes a transparent capsule shell, an imaging device, a lighting device, a photoelectric switch device, Image information processing circuit, radio frequency transmission device, power supply unit, magnetic field sensor and small magnet; the receiving jacket is a double-layer jacket with built-in receiving antenna and portable recorder; the in vitro workstation includes a personal computer, a special display for medical images and a software platform The capsule locator is a built-in sensor; the capsule endoscope, the receiving jacket, the external workstation and the capsule locator form a system through the induction of the magnetic field and the transmission of wireless signals; it is characterized in that: in the capsule endoscope The distance between the magnetic field sensor and the small magnet is kept at more than 2 millimeters; the small magnet in the capsule endoscope is located between the radio frequency transmission device and the power supply device; the small magnet in the capsule endoscope is shaped as a cylinder or a sphere ; The diameter of the small magnet is less than 12 millimeters, and the weight is less than 5 grams.

Further, the magnetic field sensor in the capsule endoscope is a Hall sensor or a giant magnetoresistive sensor.

Further, the material of the photoelectric switch device in the capsule endoscope is a photodiode or a phototransistor.

The invention is a medical magnetic capsule endoscope system, which uses a magnetic field sensor and a small magnet into the capsule endoscope, and adds a receiving jacket, an in vitro workstation, and a capsule locator, which are formed by induction of a magnetic field and transmission of wireless signals a system. With the work of the whole system, the information of the capsule endoscope in the human body can be displayed in real time on the special display for medical images of the in vitro workstation, and the movement of the capsule endoscope in the human body can be controlled through the software platform in the in vitro workstation. The invention realizes the real-time display function of the capsule endoscope image and also realizes the controllable and positioning function, which is a qualitative leap compared with the previous technology.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, and are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the attached picture:

Fig. 1 is a conceptual diagram of the overall system of a medical magnetic capsule endoscope system of the present invention;

Fig. 2 is a side sectional view of the capsule endoscope;

Fig. 3 is a schematic cross-sectional view of the upper end of the imaging device in the capsule endoscope;

Fig. 4 is a schematic view of the front surface of the capsule endoscope;

Fig. 5 is a working flow chart of the capsule endoscope.

Detailed ways

FIG. 1 is an overall system conceptual diagram showing a capsule endoscope system of the present invention. In FIG. 1 , the capsule endoscope system includes: an ingestible capsule endoscope 1 that is introduced into the body cavity of a subject 1a as an ingestible capsule endoscope 1 for obtaining information inside the subject; A portable recorder 1c as an external receiving device for wireless communication of various information between 1 and a receiving jacket 1b equipped with a receiving device, and a capsule positioner 1d for actuating the photoelectric switch of the capsule endoscope and detecting the capsule endoscope. In addition, according to the data received by the receiving jacket 1b, image display and control of the in vitro workstation 1e are performed; a USB connection is used between the receiving jacket 1b and the in vitro workstation 1e of the display device.

Fig. 2 is a schematic sectional view showing the capsule endoscope of the present invention. As described above, a capsule endoscope that is introduced from the mouth of the subject 1a and sequentially captures images of the interior of the subject (specifically, the inside of the digestive tract) is used. As shown in FIG. 2 , the capsule endoscope according to this embodiment has a capsule-shaped casing 2, an illumination device 3 for illuminating the inside of the digestive tract cavity of a subject, and an imaging device to photograph the subject illuminated by the illumination device. The imaging device 4 for the images in 1a, and the radio frequency transmission device 5 for wirelessly sending the images in the digestive tract of the subject sequentially captured by the imaging device to the outside. The capsule endoscope further includes a power supply device 6 for supplying driving power to each component device, and an image processing device 7 for processing an image and controlling the drive of each component device. The housing 2 is a capsule-shaped housing 2 formed to be easily introduced into the subject 1a. Specifically, the case 2 is realized by a case body 2a formed in a capsule shape, and an optical dome 2b attached to the front end of the case body. The shell body 2a is a cylindrical shell with an open front end and a closed hemispherical rear end, which includes an illumination system 3, a camera system 4, a radio frequency transmission device 5, a power supply system 6, an image processing device 7, and a magnetic dipole 8 . The optical dome 2 b is a substantially transparent hemispherical member with high translucency, which is attached to the front end of the case main body 2 and closes the front end. The casing formed by the casing main body 2a and the optical dome 2b hermetically accommodates the constituent devices of the capsule endoscope (for example, the lighting device 3, the camera device 4, the radio frequency transmission device 5, the power supply device 6, the image processing device 7 and the magnetic field. Dipole 8).

The illuminating device 3 plays a role of illuminating the inside of the subject 1 a captured by the imaging device 4 . Specifically, as shown in FIG. 3 , the illuminating device 3 has a light-emitting device 3a that emits illuminating light that illuminates the interior of the subject 1a through the optical dome 2b, and includes chips such as chip resistors or chip capacitors for realizing the illuminating function. Component ring circuit board 3b.

The light-emitting device 3a is, for example, a light-emitting component such as an LED, which emits illumination light (such as white light) for illuminating the field of view of the imaging device 4 (described later), and is located in the middle of the optical dome 2b side shown in FIG. The imaging device 4 has a ring-shaped circuit board with a through hole, and a plurality of the above-mentioned light-emitting devices 3a are installed near the outer periphery. The photoelectric activation switch 3c of the mirror switch device.

The imaging device 4 functions to capture images of the inside of the subject 1a. Specifically, as shown in FIG. 3 , the imaging device 4 includes: a solid-state image sensor 4a such as a CMOS that captures an image inside the subject, an optical lens 4b that forms an image of the image inside the subject on the light-receiving surface of the solid-state imaging device, and a useful The camera circuit board 4c is a circuit for realizing the functions of the camera device 4 . The imaging device 4 captures an image of a subject within the field of view illuminated by the light emitting device 3 a. The imaging circuit board 4c is a disc-shaped circuit board with a through hole, and is connected to the ring-shaped circuit board 3b. On this imaging circuit board 4c, as shown in the figure, an imaging device 4 is installed on the surface opposite to the annular circuit board 3b. The function of converting the captured optical signal into an electrical signal. And the image signal is sent to the image processing device 7 for image processing. The image signal is transmitted to the radio frequency transmission device 5 through the camera circuit board 4c.

The image processing device 7 is, for example, installed on the above-mentioned imaging circuit board 4c, controls the driving of each component device of the capsule endoscope, and performs a compression control function on the image signal transmitted by the imaging device 4 and compresses the compressed signal. The circuit device for transmitting to the radio frequency transmission device 5 for transmission. Specifically, the image processing device 7 controls the light emitting device 3a, the camera device 4, and the radio frequency transmission device 5 of the above-mentioned illuminating device 3 at the same time.

The radio frequency transmission device 5 plays the role of sequentially wirelessly transmitting the images inside the subject captured by the imaging device 4 to an external receiving device (not shown), and receiving externally transmitted order information for wireless communication. Specifically, the radio frequency transmission device 5 has a wireless circuit board 5a provided with a wireless unit 5e and a magnetic field sensor 5c, an antenna 5b for transmitting wireless signals including images inside the subject to the outside, and a power supply provided with a DCDC converter and the like. device (not shown). The radio frequency transmission device 5 performs image processing on the image signal received by the imaging device 4 to generate a wireless signal including the image of the digestive tract of the subject for transmission. The antenna 5b sequentially transmits the wireless signal generated by the radio frequency transmission device 5 to an external receiving device (not shown). Among them, the magnetic field sensor 5c chip located on the wireless circuit board 5a has the function of sensing the magnetic field strength of the capsule endoscope in real time, and the capsule endoscope can be flexibly moved by an external control device; and the gravity field sensor 9, which has The position and relative movement of the capsule endoscope are determined in real time, and the movement state of the capsule endoscope inside the digestive tract can be transmitted to the external receiving device through the radio frequency transmission device 5 and the antenna 5b in real time. The information transmitted by the magnetic field sensor 5c and the gravity field sensor 9 and the external control device can make the movement of the capsule endoscope system in the digestive tract more flexible.

In addition, after the above radio frequency transmission device 5 transmits the images inside the subject captured by the imaging device 4 through the above antenna 5b system, several (such as 14) are installed in the receiving jacket 1b worn by the subject in Fig. 1 . ) can be received by the receiving device that can accurately receive the signal, and receive the image signal and position and attitude information sent by the capsule endoscope system into the external receiving device, and store them in the storage device of the external portable recorder 1c. Finally, it is connected to the in vitro workstation 1e through USB or other link methods, and the received images are displayed on the display device.

The power supply unit includes batteries 6 (for example, two) having predetermined electric power. The power supply circuit board 7a supplies the drive power supplied from the power supply system to the wireless unit of the radio frequency circuit board 5a. The batteries 6 are, for example, button-type dry batteries such as silver oxide batteries, and as shown in FIG. 2 , a necessary number (for example, two) are connected between power circuit boards. Driving power is supplied to each constituent device of the capsule endoscope.

The magnetic dipole 8 is used for the magnetically controlled positioning of the capsule endoscope, and is mainly composed of a ferrite magnet, and is integrated in the capsule endoscope 1 together with the battery 6 and other devices. The magnetic dipole 8 can generate a local magnetic field higher than the earth's magnetic field. The external magnetic sensor detects the spatial distribution of the local magnetic field to determine the spatial position of the capsule endoscope, and realizes the magnetically controlled positioning process of the capsule endoscope 1 .

Next, the working principle of the capsule endoscope will be explained. Fig. 5 is a diagram showing the working principle of the capsule endoscope of the present invention. After the power control device is turned on by the photoelectric activation switch 3c, driving power is supplied to each constituent device of the capsule endoscope. When the power supply control circuit (not shown) receives the start command, it supplies power to the annular circuit board 3b of the LED control circuit, and under the corresponding control command, the LED lighting array device 3a is in the working state to fully illuminate the subject , that is, at the same time, when the battery 6 supplies power, the optical lens 4b, the image acquisition device 4a, etc. are in the working state. The image processing device 7 performs image encoding, data packaging and compression processing on the image of the digestive tract of the subject captured by the camera device, and then transmits it to the radio frequency transmission device, and at the same time transmits the analog signal input from the magnetic field sensor 5c to the radio frequency transmission device 5 Perform wireless transmission, and transmit the magnetic sensor simulation parameters and image information to the external receiving device through the antenna 5b. After the image transmission is completed, a shooting cycle is completed, and finally the external workstation partially completes the analysis of the magnetic field sensor 5c and image and other parameter information and implements specific and flexible control of the capsule endoscope.

The invention forms a system through the induction of the capsule endoscope, the receiving jacket, the external work station and the capsule positioner through the induction of the magnetic field and the transmission of the wireless signal. With the work of the whole system, the information of the capsule endoscope in the human body can be displayed in real time on the special display for medical images of the in vitro workstation, and the movement of the capsule endoscope in the human body can be controlled through the software platform in the in vitro workstation. The invention realizes the real-time display function of the capsule endoscope image and also realizes the controllable and positioning function, which is a qualitative leap compared with the previous technology.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still understand the foregoing embodiments The recorded technical solutions are modified, or some of the technical features are equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (3)

1. A medical magnetic capsule endoscope system, comprising a capsule endoscope, a receiving jacket, an in vitro workstation, a capsule locator, the capsule endoscope comprising a transparent capsule shell, an imaging device, a lighting device, a photoelectric switch device, an image An information processing circuit, a radio frequency transmission device, a power supply unit, a magnetic field sensor and a small magnet; the receiving jacket is a double-layer jacket with a built-in receiving antenna and a portable recorder; the in vitro workstation includes a personal computer, a special display for medical images and a software platform; The capsule locator is a built-in sensor; the capsule endoscope, receiving jacket, in vitro workstation and capsule locator form a system through magnetic field induction and wireless signal transmission; it is characterized in that: the capsule endoscope The distance between the magnetic field sensor and the small magnet is kept at more than 2 millimeters; the small magnet in the capsule endoscope is located between the radio frequency transmission device and the power supply device; the small magnet in the capsule endoscope is in the shape of a cylinder or a sphere; The diameter of the small magnet is less than 12 millimeters, and the weight is less than 5 grams. 2 . The medical magnetic capsule endoscope system according to claim 1 , wherein the magnetic field sensor in the capsule endoscope is a Hall sensor or a giant magnetoresistive sensor. 3 . 3. A medical magnetic capsule endoscope system according to claim 1, characterized in that: the material of the photoelectric switch device in the capsule endoscope is a photodiode or a phototransistor.