Pulmonary artery blood oxygen saturation monitoring device based on optical fiber sensor

A technology of optical fiber sensing and monitoring devices, which is applied in the fields of sensors, diagnostic recording/measurement, medical science, etc. It can solve the problems of potential safety hazards, unfixed relative positions, and easy contamination of the probe surface, so as to ensure repeatability and reliability. Sexuality, small size, and low medical cost

Inactive Publication Date: 2009-09-23
UNIV OF SHANGHAI FOR SCI & TECH
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Problems solved by technology

The main disadvantage of this patent is that the commonly used reflective photoelectric detection device, i.e. two light-emitting diodes (660, 940nm) and photosensitive diode or triode are connected to the endotracheal tube air bag position by wires, which only changes the use mode of the original device, and The power supply is directly introduced into the endotracheal tube, which poses a safety hazard. The probe is d

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  • Pulmonary artery blood oxygen saturation monitoring device based on optical fiber sensor
  • Pulmonary artery blood oxygen saturation monitoring device based on optical fiber sensor

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Embodiment Construction

[0020] Optical fiber sensing pulmonary arterial oxygen saturation monitoring device, such as figure 1 shown. It consists of two optical fiber sensing lines, one of which transmits the energy of the LED light source 11 to the surface of the airway through the optical fiber 22 and the gem crystal probe 23, penetrates the airway into the pulmonary artery, and returns the photons that interact with the blood to the airway after diffuse reflection. The inner side of the road is received by the gemstone crystal probe 23 of another optical fiber sensing line; the optical fiber 22 is transmitted to the photoelectric converter 31, and the optical information is converted into an electrical signal, which is passed through the photodetector 32, the amplification and shaping circuit 33, and the data The acquisition card 34 is input to the computer 35, and the computer realizes signal processing and calculation result display through software, and provides parameters such as pulmonary arte...

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Abstract

A pulmonary artery blood oxygen saturation monitoring device based on an optical fiber sensor is disclosed, wherein an input end of a driving circuit is connected with a computer, and the output end of the same is connected with two LED light sources, light signal is incident into a focusing lens; a probe system comprises two routes of optical fiber sensing lines, one end of a first route of optical fiber is connected with a gem crystal probe, and the other end is connected with the focusing lens; one end of a second route of optical fiber is connected with the gem crystal probe, and the other end is connected with a photoelectric converter via light signal; the two routes are staggered back and forth, the energy of the first route LED light source of optical fiber is transmitted to the surface of an air path via optical fiber and the gem crystal probe, enters pulmonary artery through the air path, returns to the internal side of the air path after being subjected to the diffuse reflection of the photon acted with blood, and is absorbed by the second gem crystal probe of the second route, light signal after optical fiber transmissison is absorbed by the photoelectric converter, enters a computer after amplified shaping circuit and data acquisition, and gives out parameters such as pulmonary artery blood oxygen saturation, cardiac rate and the like by software processing. The invention can realize high-precise real time monitoring without trauma.

Description

technical field [0001] The invention relates to a medical monitoring device, in particular to a device for monitoring pulmonary artery blood oxygen saturation with optical fiber sensing. Background technique [0002] The survival of human cells mainly depends on sufficient oxygen supply to meet their metabolic needs. If the oxygen supply is insufficient, the function of the cells will be damaged or even die. Therefore, when dealing with critically ill patients, only paying attention to hemodynamic indicators such as blood pressure cannot ensure sufficient oxygen supply. Only by providing sufficient oxygen supply can normal cell metabolism function be maintained. The monitoring of blood oxygen can well reflect the tissue oxygenation function. Through blood oxygen monitoring, we will greatly improve the safety of clinical anesthesia and respiratory therapy for critically ill patients. [0003] At present, there are two main types of instruments for monitoring blood oxygen in...

Claims

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Application Information

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IPC IPC(8): A61B5/1455
Inventor 王成徐安成郭旭东严荣国陈澄方宝英黄华杰
Owner UNIV OF SHANGHAI FOR SCI & TECH
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