An intracranial pressure sensor capable of in vivo calibration and a calibration method thereof
A calibration method and sensor technology, applied to instruments, measuring devices, calibration/testing of force/torque/power measuring instruments, etc., can solve complex packaging process, drift of intracranial pressure measurement results, influence on calibration and temperature compensation effects, etc. problem, to achieve the effect of eliminating measurement error, easy to use, simple and reasonable structure
Inactive Publication Date: 2017-12-12
BEIJING WANTEFU MEDICAL APP CO LTD
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However, after experimental testing, it was found that there are several problems in this kind of manufacturing process: first, the sterilization process affects the original characteristics of the intracranial pressure sensor, including sensor zero point and sensitivity, thereby affecting the calibration and temperature compensation effect; second, the packaging The sealing material used in the process has water absorption during use, causing the zero point drift of the intracranial pressure sensor
The intracranial pressure sensor needs to refer to the sensitivity and zero point value of the sensor when measuring the intracranial pressure. Due to the change of zero point and sensitivity, the measurement result of intracranial pressure drifts, and it is impossible to accurately judge the intracranial pressure at this time.
Based on the above analysis, some foreign studies have proposed an in vivo calibration scheme for intracranial pressure sensors, that is, the calibration is completed in the human cranial cavity, such as the patent US6120457, but most of these sensors use a multi-catheter structure, and the packaging process is relatively complicated
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.
[0032] Such as Figure 1-4 As shown, an in vivo calibrated intracranial pressure sensor according to an embodiment of the present invention includes a sensor module 3, the sensor module includes a sensor probe 30, and the sensor probe 30 is connected to an interface through a catheter 31 The air hole of the interface plate 32 is connected with the pressure generation module 2 , and the output interface of the interface plate 32 is connected with the system control module 1 .
[0033] In a sp...
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The invention provides an intracranial pressure sensor capable of in vivo calibration. The intracranial pressure sensor comprises a sensor module which comprises a sensor probe; the sensor probe is connected with interface board via a catheter; an air hole of the interface board is connected with a pressure generating module; an output interface of the interface board is connected with a system control module. A corresponding calibration method is provided. The intracranial pressure sensor has a single-catheter structure, is capable of performing in vivo calibration on intracranial pressure in clinical application and eliminating measurement error caused by sensor null point and sensitivity change and has the advantages of simple and reasonable structure and convenient use.
Description
technical field [0001] The invention relates to the technical field of intracranial pressure calibration, in particular to an in vivo calibrated intracranial pressure sensor and a calibration method thereof. Background technique [0002] At present, the manufacturing process of most intracranial pressure sensors is: encapsulation-calibration-package-sterilization. However, after experimental testing, it was found that there are several problems in this kind of manufacturing process: first, the sterilization process affects the original characteristics of the intracranial pressure sensor, including sensor zero point and sensitivity, thereby affecting the calibration and temperature compensation effect; second, the packaging The sealing material used in the process has the phenomenon of water absorption during use, which causes the zero point drift of the intracranial pressure sensor. The intracranial pressure sensor needs to refer to the sensitivity and zero point value of t...
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IPC IPC(8): G01L25/00
CPCG01L25/00
Inventor 刘文杰赵英俊孟祥珺崔少飞杨士润
Owner BEIJING WANTEFU MEDICAL APP CO LTD