CN215914652U - Induction pad and medical imaging equipment - Google Patents
Induction pad and medical imaging equipment Download PDFInfo
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- CN215914652U CN215914652U CN201920606848.7U CN201920606848U CN215914652U CN 215914652 U CN215914652 U CN 215914652U CN 201920606848 U CN201920606848 U CN 201920606848U CN 215914652 U CN215914652 U CN 215914652U
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Abstract
The embodiment of the utility model provides an induction pad and medical imaging equipment. The induction pad comprises a pad body, a pressure detection mechanism, a data processing circuit and a memory. The pressure detection mechanism comprises a plurality of pressure sensors which are distributed on the pad body and used for detecting pressure signals generated by a patient. The data processing circuit is arranged in the cushion body and is respectively and electrically connected with the pressure sensors, and is used for receiving the pressure signals detected by the pressure sensors, judging effective values in the pressure signals, acquiring coordinates of the pressure sensors corresponding to the effective values, and determining the height and weight index of the patient according to the effective values and the coordinates of the pressure sensors corresponding to the effective values. The memory is electrically connected with the data processing circuit and used for storing the coordinates of the plurality of pressure sensors.
Description
Technical Field
The utility model relates to the technical field of medical imaging, in particular to an induction pad and medical imaging equipment.
Background
Before performing an enhancement scan using CT (Computed Tomography) or PET (Positron Emission tomogry)/CT, the height and weight of the patient are acquired, and the required amount of the enhancement agent is calculated from the BMI (Body Mass Index) Index. However, in practice the patient's height and weight are provided by the patient, resulting in inaccurate calculated BMI.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a sensing pad and a medical imaging device for solving the problem that the height and weight of a patient cannot be accurately known.
The present invention provides an inductive pad, comprising:
a cushion body;
the pressure detection mechanism comprises a plurality of pressure sensors which are distributed on the cushion body and used for detecting pressure signals generated by a patient;
the data processing circuit is arranged in the cushion body, is respectively electrically connected with the pressure sensors, is used for receiving the pressure signals detected by the pressure sensors, judges effective values in the pressure signals, acquires coordinates of the pressure sensors corresponding to the effective values, and determines the height and weight index of the patient according to the effective values and the coordinates of the pressure sensors corresponding to the effective values; and
and the memory is electrically connected with the data processing circuit and is used for storing the coordinates of the plurality of pressure sensors.
In one embodiment, the data processing circuit comprises:
the acquisition unit is electrically connected with the pressure sensor and the memory and is used for receiving the pressure signal, determining the effective value in the pressure signal according to a preset threshold value and acquiring the coordinate of the pressure sensor corresponding to the effective value;
and the first operation unit is electrically connected with the acquisition unit and is used for receiving the effective value and the coordinate of the pressure sensor corresponding to the effective value, calculating the weight of the patient according to the effective value, determining the height of the patient according to the coordinate of the pressure sensor corresponding to the effective value, and calculating the height and weight index according to the weight and the height of the patient.
In one embodiment, the data processing circuit further includes a second operation unit, electrically connected to the obtaining unit, configured to receive the effective value, calculate a ballistocardiograph signal of the patient according to the effective value, and generate and output a first gating trigger signal as a cardiac scanning reference signal according to a characteristic waveform of the ballistocardiograph signal, and/or calculate a respiratory signal of the patient according to the effective value, and generate and output a second gating trigger signal as an abdominal scanning reference signal according to the characteristic waveform of the respiratory signal.
In one embodiment, the sensing pad further comprises a data interface, the data interface is electrically connected with the first arithmetic unit and the second arithmetic unit, and the first gate control trigger signal and/or the second gate control trigger signal and the height and weight index are provided to an upper computer in the medical imaging device through the data interface.
In one embodiment, the plurality of pressure sensors are arranged in a matrix.
In one embodiment, the distance between two adjacent pressure sensors is 1-2 cm.
In one embodiment, the induction pad further comprises a contact layer covering a surface of one side of the pad body for direct contact with the patient.
In one embodiment, the data processing circuit further includes a judging unit, electrically connected to the acquiring unit and the data interface, and configured to receive the coordinates of the pressure sensor corresponding to the effective value, judge whether the body position of the patient deviates from the center line of the sensing pad according to the coordinates of the pressure sensor corresponding to the effective value, generate a feedback signal, and provide the feedback signal to an upper computer in the medical imaging device through the data interface.
In one embodiment, one end of the pad body is provided with a mounting groove, and the data processing circuit and the memory are both placed in the mounting groove.
Based on the same inventive concept, the embodiment of the utility model also provides medical imaging equipment, and the medical imaging equipment comprises the sensing pad of any one of the embodiments.
In summary, the embodiment of the present invention provides a sensing mat and a medical imaging device sensing mat, which includes a mat body, a pressure detection mechanism, a data processing circuit and a memory. The pressure detection mechanism comprises a plurality of pressure sensors which are distributed on the pad body and used for detecting pressure signals generated by a patient. The data processing circuit is arranged in the cushion body and is respectively and electrically connected with the pressure sensors, and is used for receiving the pressure signals detected by the pressure sensors, judging effective values in the pressure signals, acquiring coordinates of the pressure sensors corresponding to the effective values, and determining the height and weight index of the patient according to the effective values and the coordinates of the pressure sensors corresponding to the effective values. The memory is electrically connected with the data processing circuit and used for storing the coordinates of the plurality of pressure sensors. According to the utility model, the pressure signals at different positions are detected by the plurality of pressure sensors, then the effective values in the plurality of pressure signals are judged by the data processing circuit, the coordinates of the pressure sensors corresponding to the effective values are obtained, and the height and weight index of the patient is calculated according to the effective values and the coordinates of the pressure sensors corresponding to the effective values, so that the problem of large BMI error caused by inaccurate height and weight of the patient is avoided, the calculation accuracy of BMI is improved, the dosage of required enhanced medicaments is further accurate, and the medication risk is reduced.
Drawings
Fig. 1 is a schematic perspective structural view of an inductive pad according to an embodiment of the present invention;
FIG. 2 is a schematic electrical diagram of an embodiment of an inductive pad;
fig. 3 is a schematic perspective view of another sensing pad according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Referring to fig. 1 and 2, an embodiment of the utility model provides a sensor pad. The sensor mat comprises a mat body 100, a pressure detection mechanism 200, a data processing circuit 300 and a memory 400.
The pressure detection mechanism 200 includes a plurality of pressure sensors 210, and the plurality of pressure sensors 210 are distributed on the pad body 100 for detecting the pressure signal generated by the patient.
The data processing circuit 300 is disposed in the pad body 100, and is electrically connected to the pressure sensors 210, and is configured to receive the pressure signals detected by the pressure sensors 210, determine effective values in the pressure signals, obtain coordinates of the pressure sensors 210 corresponding to the effective values, and determine the height and weight index of the patient according to the effective values and the coordinates of the pressure sensors 210 corresponding to the effective values.
The memory 400 is electrically connected to the data processing circuit 300 for storing the coordinates of the plurality of pressure sensors 210.
It will be appreciated that prior to scanning using CT or PET/CT, the patient is required to take the booster dose, which is related to the height and weight of the patient, and therefore the height and weight of the patient is required to be obtained prior to taking the dose. In the utility model, the pressure signals of different positions of the induction pad can be detected by the plurality of pressure sensors 210, then the effective values in the plurality of pressure signals are judged by the data processing circuit 300, the coordinates of the pressure sensors 210 corresponding to the effective values are obtained, and the height and weight index of the patient is calculated according to the effective values and the coordinates of the pressure sensors 210 corresponding to the effective values, so that the problem of large BMI error caused by inaccurate height and weight of the patient is avoided, the BMI accuracy is improved, the dosage of required enhanced medicaments is further accurate, and the medication risk is reduced.
In practical design, the arrangement of the pressure sensors should be determined according to specific requirements, and a plurality of pressure sensors 210 are generally arranged on the surface of one side of the pad body 100, so as to reduce the buffer between the patient and the pressure sensors as much as possible and improve the accuracy of measurement. In addition, if the pad body has a sufficient thickness, it is also possible to embed the sensor in the pad body. Further, in an actual design process, the data processing circuit 300 and the memory 400 may be separately provided, respectively, and an integrated module having a data processing function of the data processing circuit 300 and a storage function of the memory 400 may be used in place of the data processing circuit 300 and the memory 400.
In one embodiment, the data processing circuit 300 includes an acquisition unit 310 and a first arithmetic unit 320.
The obtaining unit 310 is electrically connected to the pressure sensor 210 and the memory 400, and is configured to receive the pressure signal, determine the effective value in the pressure signal according to a preset threshold, and obtain the coordinate of the pressure sensor 210 corresponding to the effective value. In this embodiment, the obtaining unit 310 first obtains the pressure signal detected by each pressure sensor 210, then determines the pressure signals one by one according to a preset threshold, and when the value of the pressure signal is greater than the preset threshold, determines that the pressure signal is an effective value; when the value of the pressure signal is not greater than the preset threshold, it is determined that the pressure signal is an invalid value, the invalid value is eliminated, and then the coordinates of the pressure sensor 210 corresponding to each of the valid values are respectively acquired from the memory 400.
The first isThe operation unit 320 is electrically connected to the obtaining unit 310, and is configured to receive the effective value and the coordinate of the pressure sensor 210 corresponding to the effective value, calculate the weight of the patient according to the effective value, determine the height of the patient according to the coordinate of the pressure sensor 210 corresponding to the effective value, and calculate the height and weight index according to the weight and the height of the patient. In this embodiment, the first operation unit 320 first calculates the weight of the patient according to the effective values measured at different positions, calculates the height of the patient according to the coordinates of the pressure sensor 210 corresponding to each effective value, and then calculates the height of the patient according to the formula BMI ═ W/H2And precisely acquiring a BMI value, further precisely controlling the dosage of the enhancing medicament, and improving the medication safety, wherein W is the weight of the patient, and H is the height of the patient.
In one embodiment, the data processing circuit 300 further includes a second operation unit 330, and the second operation unit 330 is electrically connected to the obtaining unit 310, and configured to receive the effective value, calculate a ballistocardiograph signal of the patient according to the effective value, and generate and output a first gating trigger signal as a cardiac scanning reference signal according to a characteristic waveform of the ballistocardiograph signal, and/or calculate a respiratory signal of the patient according to the effective value, and generate and output a second gating trigger signal as an abdominal scanning reference signal according to a characteristic waveform of the respiratory signal.
It can be understood that when CT or PET/CT is used to image the chest or abdomen of a living animal, the respiratory motion will generate motion artifacts, resulting in a reduction in the spatial resolution of the image, and therefore it is necessary to obtain the electrocardiographic or respiratory signals of the patient by means of pasting electrode pads or fixing balloons and generate gating signals as a reference during scanning. In this embodiment, the second operation unit 330 extracts a cardiac shock signal and a respiratory signal of a patient from the effective value by using a sub-band filtering and smoothing algorithm, generates and outputs a first gating trigger signal serving as a cardiac scanning reference signal according to a characteristic waveform of the cardiac shock signal, and generates and outputs a second gating trigger signal serving as an abdominal scanning reference signal according to a characteristic waveform of the respiratory signal, so as to reduce a motion artifact according to the first gating trigger signal or the second gating trigger signal, improve a spatial resolution of a scanned image, omit a process of pasting an electrode sheet or fixing an air bag, and shorten a time required for scanning.
In addition, the doctor can judge whether the patient is ready by observing whether the cardiac shock signal and/or the respiratory signal on the CT display device are stable.
In one embodiment, the sensing mat further includes a data interface 500, as shown in fig. 3, the data interface 500 is electrically connected to the first operation unit 320 and the second operation unit 330, and the first gate control trigger signal and/or the second gate control trigger signal and the height and weight index are provided to an upper computer in the medical imaging device through the data interface 500. In this embodiment, through setting up data interface 500 realizes the electricity between the host computer in response pad and the medical imaging equipment and connects, is convenient for take off the response pad when not needing the response pad, or changes the response pad of renewal when the response pad is bad.
In one embodiment, the plurality of pressure sensors 210 are arranged in a matrix. In the present embodiment, the pressure sensors 210 are arranged in a matrix, so that pressure signals at different positions can be uniformly collected. In addition, the plurality of pressure sensors 210 may be arranged in a zigzag manner, and the arrangement of the pressure sensors 210 is not limited in this embodiment.
In one embodiment, the distance between two adjacent pressure sensors 210 is 1-2 cm. In this embodiment, the distance between two adjacent pressure sensors 210 is set to 1-2 cm, which can avoid inaccurate BMI caused by insufficient pressure signal data collected due to too sparse density of the pressure sensors 210, and can also avoid increase of production cost due to large density of the pressure sensors 210.
In one embodiment, the inductive pad further comprises a contact layer 600, wherein the contact layer 600 covers the surface of one side of the pad body 100 for direct contact with the patient. In this embodiment, the plurality of pressure sensors 210 are disposed on the surface of the pad body 100, and are sandwiched between the contact layer 600 and the pad body 100. It can be understood that, since the two ends of the pressure sensor 210 are provided with the positive electrode and the negative electrode, the patient may have contacts to get an electric shock when lying directly on the pressure sensor, which may cause an unsafe problem. In the embodiment, the contact layer 600 is arranged on the surface of one side of the pad body 100, and the plurality of pressure sensors 210 are clamped between the contact layer 600 and the pad body 100, so that the direct contact between the patient and the electrodes of the pressure sensors 210 is avoided, and the safety performance of the induction pad is improved. In addition, the contact layer 600 is generally made of silicone, leather, or composite cloth from the viewpoint of comfort.
In one embodiment, the pressure sensor 210 is a fiber optic pressure sensor 210 or an electronic pressure sensor 210. In this embodiment, the same type of pressure sensor 210 is used to simplify the manufacturing process and shorten the production cycle. Further, different types of pressure sensors 210 may also be used in combination to form the pressure detection mechanism 200. The resistance pressure sensor 210 includes a piezoelectric pressure sensor 210, a ceramic pressure sensor 210, a diffused silicon pressure sensor 210, a sapphire pressure sensor 210, a piezoelectric pressure sensor 210, and the like, and the type of the pressure sensor 210 is not limited in any way.
In one embodiment, the data processing circuit 300 further includes a determining unit 340, where the determining unit 340 is electrically connected to the obtaining unit 310 and the data interface 500, and is configured to receive the coordinates of the pressure sensor corresponding to the effective value, determine whether the body position of the patient deviates from the centerline of the sensing pad according to the coordinates of the pressure sensor corresponding to the effective value, generate a feedback signal, and provide the feedback signal to an upper computer in the medical imaging device through the data interface, so as to notify that the body position of the patient is adjusted when the body position of the patient deviates from the centerline, and obtain a better scanning result. For example, the width direction of the sensing pad is taken as the X axis, the length direction is taken as the Y axis, the sensing pad is symmetrical about Y equal to 0, Y equal to 0 is taken as the center line of the sensing pad, the scanning effect is best when the body of the patient is symmetrical about Y equal to 0, the judging unit 340 can calculate the actual symmetry axis of the body of the patient according to the coordinates of the pressure sensor corresponding to each effective value, judge the deviation between the actual symmetry axis and the center line, and feed the deviation back to the upper computer and the doctor, and the doctor can judge whether the patient needs to be informed to adjust the body position according to the deviation, so as to improve the quality of the scanning result.
In one embodiment, an installation groove 700 is formed at one end of the pad body 100, and the data processing circuit 300 and the memory 400 are both disposed in the installation groove 700, so as to prevent the data processing circuit 300 and the memory 400 from being damaged by external force such as squeezing.
Based on the same inventive concept, the embodiment of the utility model also provides medical imaging equipment, and the medical imaging equipment comprises the sensing pad of any one of the embodiments.
In summary, the embodiment of the present invention provides a sensing mat and a medical imaging device sensing mat, which includes a mat body 100, a pressure detection mechanism 200, a data processing circuit 300 and a memory 400. The pressure detection mechanism 200 includes a plurality of pressure sensors 210, and the plurality of pressure sensors 210 are distributed on the pad body 100 for detecting the pressure signal generated by the patient. The data processing circuit 300 is disposed in the pad body 100, and is electrically connected to the pressure sensors 210, and is configured to receive the pressure signals detected by the pressure sensors 210, determine effective values in the pressure signals, obtain coordinates of the pressure sensors 210 corresponding to the effective values, and determine the height and weight index of the patient according to the effective values and the coordinates of the pressure sensors 210 corresponding to the effective values. The memory 400 is electrically connected to the data processing circuit 300 for storing the coordinates of the plurality of pressure sensors 210. In the utility model, the pressure signals at different positions are detected by the plurality of pressure sensors 210, then the effective values in the plurality of pressure signals are judged by the data processing circuit 300, the coordinates of the pressure sensors 210 corresponding to the effective values are obtained, and the height and weight index of the patient is calculated according to the effective values and the coordinates of the pressure sensors 210 corresponding to the effective values, so that the problem of large BMI error caused by inaccurate height and weight of the patient is avoided, the BMI accuracy is improved, the dosage of the required enhanced medicament is further accurate, and the medication risk is reduced.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. An inductive pad, comprising:
a cushion body;
the pressure detection mechanism comprises a plurality of pressure sensors which are distributed on the cushion body and used for detecting pressure signals generated by a patient;
the data processing circuit is arranged in the pad body and is respectively and electrically connected with the plurality of pressure sensors; and
a memory electrically connected to the data processing circuit for storing coordinates of the plurality of pressure sensors;
wherein the data processing circuit comprises:
an acquisition unit electrically connected with the pressure sensor and the memory;
and the first operation unit is electrically connected with the acquisition unit and is used for calculating the height and weight index of the patient.
2. The sensor pad of claim 1, wherein the data processing circuit further comprises: and the second arithmetic unit is electrically connected with the acquisition unit and is used for calculating the cardiac shock signal of the patient.
3. The sensor pad of claim 2, further comprising a data interface electrically connected to the first and second computing units, wherein the data interface provides the first and/or second gate control trigger signals and the height/weight index to an upper computer in a medical imaging device.
4. The sensor mat of claim 1, wherein the plurality of pressure sensors are arranged in a matrix.
5. The sensor pad of claim 4, wherein the distance between two adjacent pressure sensors is 1-2 cm.
6. The sensor mat of claim 1, further comprising a contact layer covering a surface of one side of the mat body for direct contact with the patient.
7. The sensor pad of claim 3, wherein the data processing circuit further comprises a determination unit electrically connected to the acquisition unit and the data interface for providing feedback signals to an upper computer in the medical imaging device via the data interface for deviation of the patient's body position relative to the centerline of the sensor pad.
8. The sensor mat of claim 1, wherein one end of the mat body is provided with a mounting groove, and the data processing circuit and the memory are both placed in the mounting groove.
9. A medical imaging device, comprising the sensor pad of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920606848.7U CN215914652U (en) | 2019-04-29 | 2019-04-29 | Induction pad and medical imaging equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920606848.7U CN215914652U (en) | 2019-04-29 | 2019-04-29 | Induction pad and medical imaging equipment |
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| Publication Number | Publication Date |
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| CN215914652U true CN215914652U (en) | 2022-03-01 |
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| CN201920606848.7U Active CN215914652U (en) | 2019-04-29 | 2019-04-29 | Induction pad and medical imaging equipment |
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