CN112353394A - Pelvic floor muscle pressure detection device and calibration method thereof - Google Patents
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- 238000001514 detection method Methods 0.000 title claims abstract description 197
- 210000003205 muscle Anatomy 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 120
- 210000003903 pelvic floor Anatomy 0.000 title claims abstract description 116
- 230000008569 process Effects 0.000 claims abstract description 82
- 238000012545 processing Methods 0.000 claims abstract description 45
- 238000011897 real-time detection Methods 0.000 claims abstract description 38
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- 238000012360 testing method Methods 0.000 claims description 6
- 238000012937 correction Methods 0.000 description 5
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- 230000009467 reduction Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
- A61B5/224—Measuring muscular strength
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- A—HUMAN NECESSITIES
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Abstract
The invention relates to a pelvic floor muscle pressure detection device and a calibration method thereof, wherein the detection device comprises: the device comprises a pressure probe, a pipeline, a pressure sensor, a processing module and a calibration module; in the detection process, the pressure probe is extruded by pelvic floor muscles to deform, the gas pressure in the cavity is increased, and the pressure sensor detects the gas pressure in the cavity in real time, converts the gas pressure into an electric signal and sends the electric signal to the processing module; the processing module converts the electric signals into pelvic floor muscle pressure real-time detection data and determines whether to carry out calibration processing according to the variable quantity of the gas pressure in the chamber; when the calibration processing is needed, the processing module sends the pelvic floor muscle pressure real-time detection data to the calibration module; the calibration module generates a pressure calibration parameter corresponding to each moment in the detection process according to the variation of the gas pressure and the time parameter of the detection process; and the processing module calibrates the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameters to obtain calibrated pelvic floor muscle pressure detection result data.
Description
Technical Field
The invention relates to the technical field of pressure detection, in particular to a pelvic floor muscle pressure detection device and a calibration method thereof.
Background
The pressure probe of the existing pelvic floor muscle pressure detection device is extruded in the detection process, so that gas leakage is easy to occur, the detection result of the detection device is subjected to overall drift, and the accuracy is reduced. At present, a calibration method aiming at the detection result of the detection device with gas continuously leaking in the detection process is not available.
Therefore, it is necessary to provide a detection device capable of detecting pelvic floor muscle pressure more accurately, and a calibration method for the detection result of a device that leaks gas continuously.
Disclosure of Invention
The invention aims to provide a pelvic floor muscle pressure detection device and a calibration method thereof aiming at the defects of the prior art, the influence of leaked gas on a detection result in the detection process is reduced by adding a large-capacity cylinder, and the real-time detection data of the pelvic floor muscle pressure at each moment in the detection process is calibrated according to the variation of the gas pressure in the detection process, so that the accuracy of the data of the pelvic floor muscle pressure detection result is improved.
To achieve the above object, in a first aspect, the present invention provides a pelvic floor muscle pressure detection apparatus, including: the device comprises a pressure probe, a pipeline, a pressure sensor, a processing module and a calibration module;
the pressure probe is sleeved at one end of the pipeline, and an internal cavity of the pressure probe is communicated with the inside of the pipeline to form a chamber for containing gas; the pressure sensor is fixed at the other end of the pipeline and used for detecting the gas pressure in the cavity; the pressure sensor is connected with the processing module; the processing module is connected with the calibration module;
in the detection process, the pressure probe is extruded by pelvic floor muscles to deform, the gas pressure in the cavity is increased, and the pressure sensor detects the gas pressure in the cavity in real time, converts the gas pressure into an electric signal and sends the electric signal to the processing module; the processing module converts the electric signal into pelvic floor muscle pressure real-time detection data, and determines whether to calibrate the pelvic floor muscle pressure real-time detection data or not according to the variation of the gas pressure in the cavity before and after the detection process;
when the calibration processing is needed, the processing module sends the pelvic floor muscle pressure real-time detection data to the calibration module; the calibration module generates a pressure calibration parameter corresponding to each moment in the detection process according to the variation of the gas pressure and the time parameter of the detection process;
and the processing module calibrates the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameters to obtain calibrated pelvic floor muscle pressure detection result data.
Preferably, the step of generating, by the calibration module, a pressure calibration parameter corresponding to each moment in the detection process according to the variation of the gas pressure and the time parameter of the detection process specifically includes:
calculating a pressure calibration parameter at each moment in the detection process according to the formula 1;
ΔPi＝(P1-P2)*ti/T (formula 1)
Wherein T is total detection time long data from the starting time to the ending time of the detection process, P1For detecting a first reference pressure, P, of the chamber at the start of the process2A second reference pressure, t, of the chamber at the end of the detection processiFor the detection duration data from the start to the i-th time of the detection process, Δ PiAnd calibrating the parameter for the pressure corresponding to the ith moment in the detection process.
Further preferably, the calibrating, by the processing module, the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameter specifically includes:
calculating pelvic floor muscle pressure detection result data at each moment after calibration according to the formula 2;
Pti’＝Pti+ΔPi(formula 2)
Wherein, PtiFor the bottom of the basin at the ith moment in the detection processReal-time muscle pressure measurement data, Δ PiCalibrating the parameter for the pressure at the i-th moment in the test, Pti' is the pelvic floor muscle pressure detection result data at the i-th moment after calibration.
Preferably, when it is determined that the pelvic floor muscle pressure real-time detection data is not to be calibrated, the processing module takes the pelvic floor muscle pressure real-time detection data as pelvic floor muscle pressure detection result data.
Preferably, the detection device further comprises: a cylinder;
the cylinder is arranged on the pipeline and communicated with the pipeline to form a part of the chamber.
Preferably, the detection device further comprises: an air valve and an air pump;
the air valve and the air pump are respectively arranged on the pipeline;
the gas valve is used for controlling the discharge of gas in the chamber;
the air pump is used for inflating the chamber.
In a second aspect, the present invention provides a pelvic floor muscle pressure calibration method based on the pelvic floor muscle pressure detection apparatus of the first aspect, the calibration method including:
acquiring real-time pelvic floor muscle pressure detection data in a detection process, first reference pressure of a cavity before the detection process and second reference pressure of a cavity after the detection process, and determining whether to calibrate the real-time pelvic floor muscle pressure detection data or not according to the real-time pelvic floor muscle pressure detection data, the first reference pressure and the second reference pressure;
when the calibration processing is determined, the calibration module generates a pressure calibration parameter corresponding to each moment in the detection process according to the first reference pressure, the second reference pressure and the time parameter of the detection process;
and calibrating the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameters to obtain calibrated pelvic floor muscle pressure detection result data.
Preferably, the step of generating, by the calibration module, a pressure calibration parameter corresponding to each moment in the detection process according to the first reference pressure, the second reference pressure, and the time parameter of the detection process specifically includes:
calculating a pressure calibration parameter at each moment in the detection process according to the formula 1;
ΔPi＝(P1-P2)*ti/T (formula 1)
Wherein T is total detection time long data from the starting time to the ending time of the detection process, P1For detecting a first reference pressure, P, of the chamber at the start of the process2A second reference pressure, t, of the chamber at the end of the detection processiFor the detection duration data from the start to the i-th time of the detection process, Δ PiAnd calibrating the parameter for the pressure corresponding to the ith moment in the detection process.
Further preferably, the calibrating the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameter, and the obtaining of calibrated pelvic floor muscle pressure detection result data specifically includes:
calculating pelvic floor muscle pressure detection result data at each moment after calibration according to the formula 2;
Pti’＝Pti+ΔPi(formula 2)
Wherein, PtiFor real-time detection of data, Δ P, of pelvic floor muscle pressure at moment i in the detection processiCalibrating the parameter for the pressure at the i-th moment in the test, Pti' is the pelvic floor muscle pressure detection result data at the i-th moment after calibration.
Further preferably, when it is determined that the real-time pelvic floor muscle pressure detection data is not to be calibrated, the processing module takes the real-time pelvic floor muscle pressure detection data as pelvic floor muscle pressure detection result data.
According to the pelvic floor muscle pressure detection device and the calibration method thereof provided by the embodiment of the invention, the real-time pelvic floor muscle pressure detection data at each moment in the detection process is calibrated according to the variation of the gas pressure in the detection process, so that the accuracy of the pelvic floor muscle pressure detection result data is improved.
Drawings
FIG. 1 is a schematic structural diagram of a pelvic floor muscle pressure detection device according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for calibrating pelvic floor muscle pressure according to an embodiment of the invention;
FIG. 3 is a schematic diagram of real-time pelvic floor muscle pressure detection data before correction according to an embodiment of the present invention;
fig. 4 is a schematic diagram of corrected pelvic floor muscle pressure detection result data according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
According to the pelvic floor muscle pressure detection device and the calibration method thereof, the influence of gas leakage on the detection result in the detection process is reduced by adding the large-capacity air cylinder, the real-time pelvic floor muscle pressure detection data at each moment in the detection process is calibrated according to the variation of the gas pressure in the detection process, and the accuracy of the pelvic floor muscle pressure detection result data is improved.
As shown in fig. 1, the device for detecting pelvic floor muscle pressure includes: a pressure probe 1, a pipeline 2, a pressure sensor 3, a processing module 4 (not shown in the figure) and a calibration module 5 (not shown in the figure).
The pressure probe 1 is sleeved at one end of the pipeline 2, and an internal cavity of the pressure probe 1 is communicated with the inside of the pipeline 2 to form a cavity for containing gas. The pressure sensor 3 is fixed at the other end of the pipeline 2 and is used for detecting the gas pressure in the cavity. The pressure sensor 3 is connected with the processing module 4 through a wire or a wireless connection. The processing module 4 and the calibration module 5 are connected through a wire or a wireless connection.
Wherein, pressure probe 1 is preferred soft silica gel material, easily takes place deformation when receiving the extrusion.
In a preferred scheme, the detection device further comprises an air valve 7 and an air pump 8. The air valve 7 and the air pump 8 are respectively arranged on the pipeline 2. A gas valve 7 for controlling the release of gas from the chamber. An air pump 8 for inflating the chamber.
In a further preferred scheme, the detection device further comprises an air cylinder 6. And a cylinder 6 disposed on the pipe 2 and communicating with the pipe 2 to constitute a part of the chamber. Since the air pressure in the chamber is higher than the atmospheric pressure, air leakage inevitably occurs during the detection process. When the gas content of the inner cavity of the whole detection device is y milliliters and x milliliters of air leaks in the detection process, the deviation of detection result data is within x/y, and the influence of the leaked air in the detection process on the detection result data of the pelvic floor muscle pressure can be greatly reduced due to the addition of the air cylinder 6.
Before detection, the air valve 7 is closed to enable the chamber to be a relatively closed space, and then the air pump 8 is started to compress air and transmit the air to the chamber. When the pressure sensor 3 detects that the gas pressure in the chamber reaches the preset pressure, a feedback signal is generated, and the air pump stops inflating the chamber according to the received feedback signal to finish preparation before detection.
In the detection process, the pressure probe 1 is extruded by pelvic floor muscles to deform, the gas pressure in the cavity is increased, and the pressure sensor 3 detects the gas pressure in the cavity in real time and converts the gas pressure into an electric signal to send the electric signal to the processing module 4. The processing module 4 converts the electric signal into pelvic floor muscle pressure real-time detection data, and determines whether to calibrate the pelvic floor muscle pressure real-time detection data according to the variation of the gas pressure in the cavity before and after the detection process.
When it is determined that calibration processing is not performed on the pelvic floor muscle pressure real-time detection data, the processing module 4 takes the pelvic floor muscle pressure real-time detection data as pelvic floor muscle pressure detection result data.
When the calibration processing is needed, the processing module 4 sends the pelvic floor muscle pressure real-time detection data to the calibration module 5. The calibration module 5 generates a pressure calibration parameter corresponding to each moment in the detection process according to the variation of the gas pressure and the time parameter of the detection process.
Specifically, a pressure calibration parameter at each moment in the detection process is calculated according to formula 1;
ΔPi＝(P1-P2)*ti/T (formula 1)
Wherein T is total detection time long data from the starting time to the ending time of the detection process, P1For detecting a first reference pressure, P, of the chamber at the start of the process2A second reference pressure, t, of the chamber at the end of the detection processiFor the detection duration data from the start to the i-th time of the detection process, Δ PiAnd calibrating the parameter for the pressure corresponding to the ith moment in the detection process.
The processing module 4 calibrates the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameters to obtain calibrated pelvic floor muscle pressure detection result data.
Specifically, pelvic floor muscle pressure detection result data at each moment after calibration is calculated according to formula 2;
Pti’＝Pti+ΔPi(formula 2)
Wherein, PtiFor real-time detection of data, Δ P, of pelvic floor muscle pressure at moment i in the detection processiCalibrating the parameter for the pressure at the i-th moment in the test, Pti' is the pelvic floor muscle pressure detection result data at the i-th moment after calibration.
After the detection is completed, the exhaust can be performed by opening the air valve 7.
The connection relation and the working process among all parts of the pelvic floor muscle pressure detection device are described above. The calibration method for pelvic floor muscle pressure according to the present invention is explained in detail below with reference to fig. 2.
Step 110, acquiring real-time pelvic floor muscle pressure detection data in a detection process, a first reference pressure of a cavity before the detection process and a second reference pressure of a cavity after the detection process, and determining whether to calibrate the real-time pelvic floor muscle pressure detection data according to the real-time pelvic floor muscle pressure detection data, the first reference pressure and the second reference pressure;
specifically, when it is determined that the calibration process is performed, step 120 is performed; when it is determined that the calibration processing is not performed on the pelvic floor muscle pressure real-time detection data, step 140 is executed, and the processing module uses the pelvic floor muscle pressure real-time detection data as pelvic floor muscle pressure detection result data.
It should be noted that the first reference pressure and the pressure threshold are different, and in general, the air pump cannot stop the air charging immediately after receiving the feedback signal, so the first reference pressure is smaller than the pressure threshold for controlling the air pump to close.
specifically, in the embodiment of the present invention, the rate of air leakage from the detection device is regarded as linear. The pressure calibration parameter pressure corresponding to each moment in the detection process refers to the reduction of the gas pressure in the cavity at that moment.
Calculating a pressure calibration parameter at each moment in the detection process according to the formula 1;
ΔPi＝(P1-P2)*ti/T (formula 1)
Wherein T is total detection time long data from the starting time to the ending time of the detection process, P1For detecting a first reference pressure, P, of the chamber at the start of the process2A second reference pressure, t, of the chamber at the end of the detection processiFor the detection duration data from the start to the i-th time of the detection process, Δ PiAnd calibrating the parameter for the pressure corresponding to the ith moment in the detection process.
And step 130, calibrating the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameters to obtain calibrated pelvic floor muscle pressure detection result data.
Specifically, the embodiment of the invention corrects the real-time pressure data of the pelvic floor muscles detected at each moment according to the reduction amount of the gas pressure corresponding to the moment in the detection process.
Calculating pelvic floor muscle pressure detection result data at each moment after calibration according to the formula 2;
Pti’＝Pti+ΔPi(formula 2)
Wherein, PtiFor real-time detection of data, Δ P, of pelvic floor muscle pressure at moment i in the detection processiCalibrating the parameter for the pressure at the i-th moment in the test, Pti' is the pelvic floor muscle pressure detection result data at the i-th moment after calibration.
Fig. 3 and 4 are schematic views of pelvic floor muscle pressure detection result data before and after correction, respectively. It can be seen from fig. 3 that the real-time pelvic muscle pressure detection data before correction shifts downward as the detection time increases, but after correction by the correction method according to the embodiment of the present invention, as shown in fig. 4, the pelvic muscle pressure detection result data shows normal fluctuation.
According to the pelvic floor muscle pressure detection device and the calibration method thereof, the influence of gas leakage on the detection result in the detection process is reduced by adding the large-capacity air cylinder, the real-time pelvic floor muscle pressure detection data at each moment in the detection process is calibrated according to the variation of the gas pressure in the detection process, and the accuracy of the pelvic floor muscle pressure detection result data is improved.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a processing module, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A pelvic floor muscle pressure detection device, comprising: the device comprises a pressure probe, a pipeline, a pressure sensor, a processing module and a calibration module;
the pressure probe is sleeved at one end of the pipeline, and an internal cavity of the pressure probe is communicated with the inside of the pipeline to form a chamber for containing gas; the pressure sensor is fixed at the other end of the pipeline and used for detecting the gas pressure in the cavity; the pressure sensor is connected with the processing module; the processing module is connected with the calibration module;
in the detection process, the pressure probe is extruded by pelvic floor muscles to deform, the gas pressure in the cavity is increased, and the pressure sensor detects the gas pressure in the cavity in real time, converts the gas pressure into an electric signal and sends the electric signal to the processing module; the processing module converts the electric signal into pelvic floor muscle pressure real-time detection data, and determines whether to calibrate the pelvic floor muscle pressure real-time detection data or not according to the variation of the gas pressure in the cavity before and after the detection process;
when the calibration processing is needed, the processing module sends the pelvic floor muscle pressure real-time detection data to the calibration module; the calibration module generates a pressure calibration parameter corresponding to each moment in the detection process according to the variation of the gas pressure and the time parameter of the detection process;
and the processing module calibrates the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameters to obtain calibrated pelvic floor muscle pressure detection result data.
2. The pelvic muscle pressure detection device according to claim 1, wherein the generation of the pressure calibration parameter corresponding to each moment in the detection process by the calibration module according to the variation of the gas pressure and the time parameter of the detection process specifically comprises:
calculating a pressure calibration parameter at each moment in the detection process according to the formula 1;
ΔPi＝(P1-P2)*ti/T (formula 1)
Wherein T is total detection time long data from the starting time to the ending time of the detection process, P1For detecting a first reference pressure, P, of the chamber at the start of the process2A second reference pressure, t, of the chamber at the end of the detection processiFor the detection duration data from the start to the i-th time of the detection process, Δ PiAnd calibrating the parameter for the pressure corresponding to the ith moment in the detection process.
3. The pelvic floor muscle pressure detection device according to claim 2, wherein the processing module calibrates the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameter specifically comprises:
calculating pelvic floor muscle pressure detection result data at each moment after calibration according to the formula 2;
Pti’＝Pti+ΔPi(formula 2)
Wherein, PtiFor real-time detection of data, Δ P, of pelvic floor muscle pressure at moment i in the detection processiCalibrating the parameter for the pressure at the i-th moment in the test, Pti' is the pelvic floor muscle pressure detection result data at the i-th moment after calibration.
4. The pelvic floor muscle pressure detection apparatus according to claim 1, wherein the processing module uses the pelvic floor muscle pressure real-time detection data as the pelvic floor muscle pressure detection result data when it is determined that the pelvic floor muscle pressure real-time detection data is not to be subjected to the calibration processing.
5. The pelvic muscle pressure detection apparatus according to claim 1, further comprising: a cylinder;
the cylinder is arranged on the pipeline and communicated with the pipeline to form a part of the chamber.
6. The pelvic muscle pressure detection apparatus according to claim 1, further comprising: an air valve and an air pump;
the air valve and the air pump are respectively arranged on the pipeline;
the gas valve is used for controlling the discharge of gas in the chamber;
the air pump is used for inflating the chamber.
7. A pelvic floor muscle pressure calibration method based on the pelvic floor muscle pressure detection apparatus according to claim 1, the calibration method comprising:
acquiring real-time pelvic floor muscle pressure detection data in a detection process, first reference pressure of a cavity before the detection process and second reference pressure of a cavity after the detection process, and determining whether to calibrate the real-time pelvic floor muscle pressure detection data or not according to the real-time pelvic floor muscle pressure detection data, the first reference pressure and the second reference pressure;
when the calibration processing is determined, the calibration module generates a pressure calibration parameter corresponding to each moment in the detection process according to the first reference pressure, the second reference pressure and the time parameter of the detection process;
and calibrating the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameters to obtain calibrated pelvic floor muscle pressure detection result data.
8. The method for calibrating pelvic muscle pressure according to claim 7, wherein the step of generating the pressure calibration parameter corresponding to each moment in the detection process by the calibration module according to the first reference pressure, the second reference pressure and the time parameter of the detection process specifically comprises:
calculating a pressure calibration parameter at each moment in the detection process according to the formula 1;
ΔPi＝(P1-P2)*ti/T (formula 1)
Wherein T is total detection time long data from the starting time to the ending time of the detection process, P1For detecting a first reference pressure, P, of the chamber at the start of the process2A second reference pressure, t, of the chamber at the end of the detection processiFor the detection duration data from the start to the i-th time of the detection process, Δ PiAnd calibrating the parameter for the pressure corresponding to the ith moment in the detection process.
9. The method for calibrating pelvic floor muscle pressure according to claim 8, wherein the step of calibrating the pelvic floor muscle pressure real-time detection data according to the pressure calibration parameters to obtain calibrated pelvic floor muscle pressure detection result data specifically comprises:
calculating pelvic floor muscle pressure detection result data at each moment after calibration according to the formula 2;
Pti’＝Pti+ΔPi(formula 2)
Wherein, PtiFor real-time detection of data, Δ P, of pelvic floor muscle pressure at moment i in the detection processiCalibrating the parameter for the pressure at the i-th moment in the test, Pti' is the pelvic floor muscle pressure detection result data at the i-th moment after calibration.
10. The method of calibrating pelvic muscle pressure according to claim 9, further comprising:
and when the pelvic floor muscle pressure real-time detection data are determined not to be calibrated, the processing module takes the pelvic floor muscle pressure real-time detection data as pelvic floor muscle pressure detection result data.
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| CN204501974U (en) * | 2014-12-26 | 2015-07-29 | 北京怡和嘉业医疗科技有限公司 | A kind of respirator blower fan noise reduction mechanism |
| CN104713686A (en) * | 2015-04-07 | 2015-06-17 | 重庆鼎昊机电设备有限公司 | Air channel structure of cylinder cover air tightness detector |
| CN204839545U (en) * | 2015-07-16 | 2015-12-09 | 微昔智能科技(上海)有限公司 | Detection of contractile force device and women's pelvic floor flesh pressure detection device for detect user's vagina inner wall |
| CN108474715A (en) * | 2015-12-21 | 2018-08-31 | 英福康有限责任公司 | Total leakage measuring instrumentation of incompressible test object in film room |
| CN105962957A (en) * | 2016-05-18 | 2016-09-28 | 深圳大学 | System for evaluating female pelvic floor muscle strength |
| CN108066860A (en) * | 2016-11-16 | 2018-05-25 | 北京航天长峰股份有限公司 | A kind of lung ventilator leak compensation method |
| CN207145176U (en) * | 2017-08-28 | 2018-03-27 | 沈阳鼓风机集团申蓝机械有限公司 | A kind of multiaspect labyrinth seal piston ring |
| CN109335366A (en) * | 2018-11-23 | 2019-02-15 | 曾勇军 | A kind of oversize flexibility gas storage and method |
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