Probe package structure of human body pressure measuring sensor
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A technology for measuring sensors and packaging structures, which is applied in pressure sensors, sensors, and intracranial pressure measurement. The effect of stability
Pending Publication Date: 2019-09-27
成都拓蓝精创医学技术有限公司
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[0004] The purpose of the present invention is to provide a probe packaging structure of a human body pressure measurement sensor, which is used to solve the problem of deviation caused by the placement of the pressure chip being affected by the wires connected to the pressure chip when the pressure chip of the intracranial pressure sensor is packaged in the prior art. The stress generated by the shift and the springback of the wires connected to the pressure chip lead to problems such as large fluctuations and large drifts in the measurement data of the detection sensor, and the measurement data cannot truly reflect the problem of intracranial pressure.
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Embodiment 1
[0034] combined with figure 1 , figure 2 with 4 As shown, a probe package structure of a human body pressure measurement sensor, including:
[0035] The wire 5 is placed in the plastic conduit 1, and the first end of the wire 5 is connected to the signal processing circuit;
[0036] The protective tube 2 is provided with a groove, and one end of the protective tube 2 is in sealing communication with the plastic conduit 1, and the other end is a closed end;
[0037] Miniature PCB4, placed in the groove, the size of the miniature PCB4 matches the inner diameter of the protection tube 2, so that it can be placed in the groove, and the gap between the miniature PCB4 and the side wall of the protection tube 2 is filled with protective glue, so that the position of the miniature PCB4 Fixed, the signal output end of the micro PCB4 is connected to the second end of the wire 5;
[0038] The pressure chip 3 is placed in the groove and its sensing surface is perpendicular to the ope...
Embodiment 2
[0045] On the basis of Embodiment 1, the closed end is a closed end integrally formed with the protection tube 2 .
[0046] Further, the outer layers of the protective tube 2 and the closed end are made of relatively magnetically inert and biocompatible materials, which are relatively magnetically inert, that is, do not contain magnetic metals such as iron, and are made of relatively magnetically inert and biocompatible materials Including titanium-based metals, cobalt-based metals, ceramics or Peek polymer materials, which have no sensitization, carcinogenicity, or distortion in contact with the human body, and can be well combined with bone tissue, epithelium, and connective tissue.
Embodiment 3
[0048] On the basis of Example 1, the closed end is a closed end made of encapsulating soft glue. Further, the gap formed by the height difference between the sensing surface of the pressure chip 3 and the protection tube 2 is also potted with The soft glue is encapsulated so that the protective tube 2 can transition smoothly when it is inserted into the human body. The lubricating and protective function of the encapsulating soft glue is also a protective glue, and silica gel or epoxy glue can be used.
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Abstract
The invention discloses a probe package structure of a human body pressure measuring sensor. The probe package structure comprises a wire, a protection tube, a micro PCB (printed circuit board), a pressure chip and a transition wire, wherein the wire is powered on by the pressure chip and is used for signal transmission; the protection tube is provided with a groove, one end of the protection tube is in sealing communication with a plastic conduit, and the other end is a closed end; the micro PCB is placed in the groove, and a signal output end of the micro PCB is connected with the wire; the pressure chip is placed in the groove, and a sensing surface of the pressure chip is perpendicular to the opening direction of the groove; the transition wire is connected with the pressure chip and the micro PCB; a gap between the pressure chip and the protection tube is filled with protective glue; the surface of the pressure chip is filled with the protective glue; and a low stress medium is filled between the pressure chip and the micro PCB. The chip in the invention is minimally subjected to external stress, thereby ensuring minimum fluctuation of the output value of a packaged sensor and minimum time drift, avoiding the risk of short circuit, improving the stability of test value of the pressure chip, and thus effectively improving the accuracy of pressure monitoring.
Description
technical field [0001] The invention relates to the technical field of pressure monitoring, in particular to a probe packaging structure of a human body pressure measurement sensor. Background technique [0002] With the advent of the information age, sensor technology has become an important technical foundation of the information society. Sensors are more and more widely used in pressure monitoring in medicine. It is foreseeable that with the maturity of manufacturing technology and the continuous improvement of device performance, sensors It will further promote the rapid development of medicine. As the front-end device of medical equipment, the sensor can convert human physiological signals into medical electrical signals. It is widely used in the medical field and can be used to measure temperature, blood flow velocity, pressure, etc. The application of sensors in pressure detection in the human body puts forward higher measurement requirements in pressure measurement ...
Claims
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Application Information
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