WO2014124581A1

WO2014124581A1 - Capsule endoscope detection apparatus and detection method

Info

Publication number: WO2014124581A1
Application number: PCT/CN2013/086465
Authority: WO
Inventors: 李奕; 孙平; 邓文军
Original assignee: 深圳市资福技术有限公司
Priority date: 2013-02-16
Filing date: 2013-11-01
Publication date: 2014-08-21
Also published as: CN103142231B; CN103142231A

Abstract

A capsule endoscope detection apparatus is used for detecting whether a capsule endoscope exists in a body, and comprises: a logic frequency dividing circuit (2), which is used for generating a fundamental wave; a fundamental wave transmitting circuit (3), which is used for transmitting the fundamental wave at a specified frequency; and a receiving detection circuit (4), which is used for receiving an electric wave at the specified frequency, determining whether a ratio of different secondary harmonic waves reaches a set threshold value, and determines that a capsule endoscope exists in the to-be-detected body if the ratio reaches the set threshold value. Also provided is a capsule endoscope detection method that comprises: the logic frequency dividing circuit (2) generating a fundamental wave, the fundamental wave transmitting circuit (3) transmitting the fundamental wave, and the receiving detection circuit (4) determining whether a capsule endoscope exists in a body by determining a ratio of different secondary harmonic waves in an electric wave that is received. The detection apparatus and the detection method are easy to operate, and have a fast detection speed and high accuracy.

Description

Detection device and detection method of capsule endoscope

Technical field

The present invention relates to a medical device, and more particularly to a detecting device and a detecting method for detecting whether a capsule type speculum is still present in the body.

Background technique

Capsule endoscope is a new scientific and technological product developed by the medical science. It is widely used in the clinical diagnosis of various medical conditions. It is used for painless and non-invasive monitoring and diagnosis. After oral administration, it enters the stomach or intestine of the human body through its lens assembly. Close-up of the internal stomach or intestinal wall condition for clinical diagnosis and alleviate the patient's clinical pain.

However, the capsule endoscope enters the body and needs to be expelled from the body after the capsule endoscope is completed. After a period of time, the user sometimes cannot judge whether it has been excreted or not, and it is necessary to use an instrument to detect whether it is retained in the body.

technical problem

A main object of the present invention is to provide a detection apparatus and a detection method for a capsule endoscope for determining whether or not a capsule endoscope is retained in a body.

Technical solution

A capsule endoscope detecting device for detecting whether a capsule endoscope is retained in a body, comprising: a logic frequency dividing circuit for generating a fundamental wave; a fundamental wave transmitting circuit for transmitting a fundamental wave at a specific frequency; and receiving detection The circuit is configured to receive the electric wave at a specific frequency and determine whether the ratio of different secondary harmonics in the electric wave reaches a set threshold. If the set threshold is reached, it is determined that the capsule endoscope is in the body to be inspected.

Preferably, the capsule endoscope is further provided with a magnetization jump material, and the magnetization jump material generates a magnetization jump to the fundamental wave, and the fundamental wave is derived into a radio wave with harmonics.

Preferably, the magnetization transition material is any one of an amorphous magnetic cobalt iron alloy, a permalloy or an iron-based amorphous alloy.

Preferably, the receiving and detecting circuit comprises: a fundamental wave suppressing circuit for suppressing a fundamental wave emitted by the fundamental wave transmitting circuit in the electric wave; and a harmonic band pass circuit electrically connected with the fundamental wave suppressing circuit to allow multiple channels of different frequencies Harmonic passage; harmonic rectifier circuit, electrically connected with the harmonic band-pass circuit, is used to convert the intensity values of multiple harmonics of different frequencies into voltage values respectively; the microprocessor is used for comparison judgment according to the voltage value.

Preferably, the receiving detection circuit further comprises: an A/D conversion circuit that converts the voltage value transmitted via the harmonic rectifying circuit into a digital signal, and then transmits the digital signal to the microprocessor, and the microprocessor compares the values according to the numerical signal. determination.

Preferably, the receiving detection circuit further comprises: an alarm circuit electrically connected to the microprocessor for performing an alarm reminder when it is determined that the capsule endoscope exists in the body to be tested.

Preferably, the method comprises the following steps: step 1) the logic frequency dividing circuit generates a fundamental wave; step 2) the fundamental wave transmitting circuit transmits a fundamental wave; and step 3) receives the electric wave through the receiving detecting circuit, and transmits the signal to the microprocessor for comparison determination. Step 4) It is determined whether the ratio of different secondary harmonics in the radio wave reaches the set threshold value, and if the set threshold value is reached, it can be determined that there is a capsule endoscope in the body to be inspected.

Preferably, between step 2) and step 3), the method further comprises: step 21), the magnetizing jump material deriving the fundamental wave with harmonic waves, and in step 3), further comprising the following steps: step 31) The fundamental wave emitted by the fundamental wave transmitting circuit is suppressed by the fundamental wave suppressing circuit; and step 32) if the electric wave contains harmonics, the multi-channel harmonic band-passing circuits of different frequencies respectively allow harmonics of a specific frequency to pass; Step 33) After converting the intensity values of the harmonics of each secondary into voltage values by multi-channel harmonic rectifier circuits of different frequencies, the voltage values are output; in step 4), the voltage values of the different secondary harmonics are determined. If the ratio reaches the set threshold, if the set threshold is reached, it can be determined that the capsule endoscope exists in the body to be tested.

Preferably, the method further includes: step 34), the A/D conversion circuit converts the voltage values representing the harmonics of the different secondary into digital signals; and the step 4) is specifically: determining different secondary harmonics according to the digital signal Whether the ratio of the voltage values between the two reaches the set threshold value, and if the set threshold value is reached, it can be determined that there is a capsule endoscope in the body to be inspected.

Preferably, the harmonic band pass circuit is at least two harmonic band pass circuits, and the harmonic rectification circuit is at least two harmonic rectification circuits.

Preferably, the ratio of the voltage values of the harmonics is the ratio of the voltage value of the second harmonic to the voltage value of the third harmonic.

Beneficial effect

A detecting device and a detecting method for a capsule endoscope according to the present invention, a fundamental wave is generated by a logic frequency dividing circuit inside the capsule, and is transmitted by a fundamental wave transmitting circuit at a specific frequency, and then the receiving detecting circuit detects the received wave by detecting The ratio of the different secondary harmonics is used to determine whether a capsule endoscope is present in the body. The detection device and method are convenient to operate, the detection speed is fast, and the accuracy is higher.

DRAWINGS

1 is a schematic structural view of a capsule endoscope according to a specific embodiment of a detecting device for a capsule endoscope according to the present invention;

2 is a circuit block diagram of a signal transmitting end of a specific embodiment of a detecting device for a capsule endoscope according to the present invention;

3 is a block diagram of a receiving detection circuit of a specific embodiment of a detecting device for a capsule endoscope according to the present invention;

4 is a circuit block diagram of a receiving and detecting circuit of another embodiment of a detecting device for a capsule endoscope according to the present invention;

5 is a circuit block diagram of a receiving and detecting circuit of another embodiment of a detecting device for a capsule endoscope according to the present invention;

6 is a circuit block diagram showing another embodiment of a detecting device for a capsule endoscope according to the present invention;

Fig. 7 is a circuit block diagram showing another embodiment of a detecting device for a capsule endoscope.

Embodiments of the invention

A specific embodiment of a method for detecting a capsule endoscope according to the present invention includes the following steps:

Step 1) The logic frequency dividing circuit 2 generates a fundamental wave;

Step 2) the fundamental wave transmitting circuit 3 transmits the fundamental wave;

Preferably, the method further includes a step 21), the magnetization jumper material 100 derives the fundamental wave from the harmonic wave;

Step 3) receiving the radio wave through the receiving detection circuit 4, and transmitting it to the microprocessor 426 for comparison determination;

Step 4) It is determined whether the ratio of different secondary harmonics in the radio wave reaches a set threshold value, and if the set threshold value is reached, it can be determined that a capsule endoscope exists in the body to be tested.

In a preferred embodiment of the present invention, in the step 3), the method further includes the following steps:

Step 31) suppressing the fundamental wave emitted by the fundamental wave transmitting circuit by the fundamental wave suppressing circuit, and suppressing the fundamental wave in the electric wave so that it does not affect the harmonic detection;

Step 32) If harmonics are included in the electric wave, the multi-channel harmonic band-passing circuits of different frequencies respectively allow harmonics of a specific frequency to pass. In the specific embodiment, the second harmonic in the harmonic passes the second harmonic The bandpass circuit passes, the third harmonic passes through the third harmonic bandpass circuit, and the harmonics are divided and outputted for subsequent comparison analysis; if the harmonics are not included in the wave, the harmonic bandpass circuit does not Harmonics detected;

Step 33) respectively converting the harmonics of each secondary into a voltage value and transmitting it to the A/D conversion circuit through multiple harmonic rectifier circuits of different frequencies; in the specific embodiment, the second harmonic passes through the second harmonic band After the pass circuit passes, the second harmonic is rectified by the second harmonic rectifier circuit, and the third harmonic is passed through the third harmonic band pass circuit, and then rectified by the third harmonic rectifier circuit, and so on, and the harmonics are respectively passed through the harmonic rectifier circuit. The intensity value is converted to a voltage value;

Step 34) In the A/D conversion circuit, converting voltage values representing harmonics of the different secondary into digital signals, and transmitting to a microprocessor for comparison analysis; as described above, a capsule endoscope detection of the present invention In the specific implementation of the apparatus, in step 33), the voltage value output by the harmonic rectification circuit can also be directly transmitted to the microprocessor for comparison and determination;

In step 4), it is determined whether the ratio of the voltage values of the different secondary harmonics reaches a set threshold value, and if the set threshold value is reached, it can be determined that a capsule endoscope exists in the body to be tested. In the specific embodiment, the ratio of the voltage values of the second harmonic and the third harmonic is taken as a criterion, and when the ratio reaches or exceeds the threshold, the existence of the harmonic can be determined, and then the capsule endoscope is inferred. The mirror stays in the body. It is advisable to compare the harmonics of different subgroups of each group, such as the ratio of the second harmonic to the fourth harmonic, the ratio of the third harmonic to the fifth harmonic, or the ratio of the two harmonics. For comprehensive comparison, such as when the ratio of the second harmonic to the third harmonic, and the ratio of the second harmonic to the fourth harmonic reaches or exceeds each threshold, the existence of harmonics can be determined. In a specific embodiment of the detecting device for a capsule endoscope according to the present invention, it is not limited to the comparison mode of harmonics, and may be compared in various forms; in the comparison value, the intensity value or voltage of the harmonic may be used. The comparison of the values is of course not limited to this, as long as it is a numerical value that can characterize the difference of each of the secondary harmonics.

In still another embodiment of the detecting device for a capsule endoscope according to the present invention, the method further includes the step 5), when the microprocessor detects the presence of a harmonic, the presence of the capsule endoscope can be determined. The processor sends an alarm command to the alarm circuit to indicate that it is an alarm.

In a specific embodiment of the detecting device for a capsule endoscope according to the present invention, any one of an amorphous magnetic cobalt-iron alloy, a permalloy or an iron-based amorphous alloy is incorporated in the capsule endoscope. The fundamental wave is derived from the metal by the metal, and the presence or absence of the capsule endoscope is determined by generating harmonics and detecting the presence of harmonics. The fundamental wave is absorbed and filtered by a fundamental wave suppression circuit, and harmonics are passed through to perform detection.

Wherein, the harmonic band-pass circuit is a 2-6th harmonic band-pass circuit, and the harmonic rectifier circuit is a 2-6th harmonic rectifier circuit, preferably, the ratio of the voltage values of the harmonics is two The ratio of the voltage value of the subharmonic to the voltage value of the third harmonic.

A specific embodiment of a detecting device and a detecting method for a capsule endoscope according to the present invention has a point or a few points of the following advantages: the harmonic detecting device and method of the capsule endoscope of the present invention are compared with the prior art:

(1) Amorphous magnetic cobalt-iron alloy, permalloy or iron-based amorphous alloy is embedded in the capsule endoscope. Through such an alloy, in the magnetized environment, the fundamental wave is abruptly changed to make a harmonic Wave, and then through the detection of harmonics, to speculate the existence of the capsule endoscope in the body to be tested;

(2) In the receiving detection circuit, the fundamental wave suppression circuit suppresses the fundamental wave, prevents the fundamental wave from interfering with the harmonic detection, and improves the precision of the detection; and by setting multiple harmonic bandpass circuits of different frequencies and The harmonic rectification circuit separately extracts and derives harmonics of different frequencies, and converts the intensity values of the harmonics of each group into voltage values to compare, and compares the voltage comparison value with the set threshold value to determine Whether the harmonics exist, and then determine the retention of the capsule endoscope;

(3) In most detection systems, harmonics are generally suppressed or isolated as unfavorable factors. In the present invention, instead, the proportional and stepwise attenuation characteristics of the harmonics are utilized, and the secondary harmonics and the fundamental wave are utilized. There is a certain proportional relationship between each other, and the corresponding proportional values are obtained by comparing the respective secondary harmonics as the basis for the determination. Breaking through the traditional detection thinking mode, using a detection mode completely different from the prior art, the capsule endoscope is detected more conveniently and quickly. As long as the abdominal scan of the sample is performed, it is immediately known whether the body is in the body. The capsule endoscope is also retained, and the operation is convenient, the detection speed is fast, the application is stronger, and the accuracy is higher. The above is a further detailed description of the present invention in connection with the specific preferred embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

Claims

A capsule endoscope detecting device for detecting whether a capsule endoscope is retained in a body, comprising:

a logic frequency dividing circuit for generating a fundamental wave;

a fundamental wave transmitting circuit that emits the fundamental wave at a specific frequency;

Receiving a detection circuit, configured to receive the electric wave at the specific frequency, and determine whether a ratio of different secondary harmonics in the electric wave reaches a set threshold value, and if the set threshold value is reached, determining that the body to be inspected has Capsule endoscope.
The apparatus for detecting a capsule endoscope according to claim 1, wherein the capsule endoscope is further provided with a magnetization jump material, and the magnetization jump material generates a magnetization jump to the fundamental wave, The fundamental wave is derived into a wave with harmonics.
The apparatus for detecting a capsule endoscope according to claim 2, wherein the magnetization transition material is any one of an amorphous magnetic cobalt iron alloy, a permalloy or an iron-based amorphous alloy.
The apparatus for detecting a capsule endoscope according to claim 2, wherein the receiving and detecting circuit comprises:

a fundamental wave suppression circuit for suppressing a fundamental wave emitted by the fundamental wave transmitting circuit in an electric wave;

a harmonic band-pass circuit electrically connected to the fundamental wave suppression circuit to allow multiple harmonics of different frequencies to pass;

a harmonic rectifier circuit electrically connected to the harmonic band pass circuit for converting the intensity values of the plurality of different harmonics of the different frequencies into voltage values;

a microprocessor for performing a comparison determination based on the voltage value.
A detecting apparatus for a capsule endoscope according to claim 4, wherein said receiving detecting circuit further comprises: an A/D converting circuit that converts a voltage value transmitted via said harmonic rectifying circuit into a digital value The signal is passed to a microprocessor that makes a comparison decision.
The detecting device for a capsule endoscope according to claim 5, wherein the receiving detecting circuit further comprises: an alarm circuit electrically connected to the microprocessor for determining that there is a capsule endoscope in the body to be tested Alarm reminder when mirroring.
A method of detecting a capsule endoscope according to claim 1, comprising the steps of:

Step 1) The logic frequency dividing circuit generates a fundamental wave;

Step 2) The fundamental wave transmitting circuit transmits the fundamental wave;

Step 3) receiving the electric wave by the receiving detection circuit, and transmitting it to the microprocessor for comparison determination;

Step 4) It is determined whether the ratio of different secondary harmonics in the radio wave reaches a set threshold value, and if the set threshold value is reached, it can be determined that there is a capsule endoscope in the body to be inspected.
The method for detecting a capsule endoscope according to claim 7, wherein the step 2) and the step 3) further comprise: step 21), the magnetizing jump material is derived from the fundamental wave Harmonic wave
The method for detecting a capsule endoscope according to claim 7, wherein in step 3), the method further comprises the steps of:

Step 31) suppressing a fundamental wave emitted by the fundamental wave transmitting circuit by a fundamental wave suppression circuit;

Step 32) If the electric wave contains harmonics, the multi-channel harmonic band-pass circuits of different frequencies respectively allow harmonics of a specific frequency to pass;

Step 33) after converting the intensity values of the harmonics of each secondary into voltage values by multi-channel harmonic rectifier circuits of different frequencies, and outputting the voltage values;

In step 4), it is determined whether the ratio of the voltage values of the different secondary harmonics reaches a set threshold value, and if the set threshold value is reached, it can be determined that a capsule endoscope exists in the body to be tested.
The method of detecting a capsule endoscope according to claim 9, wherein the method further comprises:

Step 34), the A/D conversion circuit converts the voltage values representing the harmonics of the different secondary into digital signals;

Step 4) is specifically: determining, according to the digital signal, whether a ratio of voltage values between the different secondary harmonics reaches a set threshold, and if the set threshold is reached, determining that the body to be inspected has Capsule endoscope.
The method for detecting a capsule endoscope according to claim 9, wherein the harmonic band-pass circuit is a 2-6th harmonic band-pass circuit, and the harmonic rectifier circuit is a 2-6th harmonic Rectifier circuit.
The method of detecting a capsule endoscope according to claim 9, wherein the ratio of the voltage values of the harmonics is a ratio of a voltage value of the second harmonic to a voltage value of the third harmonic.