USB, with high speed and versatility, has been the standard port between the personal computer and the peripheral equipment. Being difficult to develop, USB has a brilliant future in the field of biomedical engineering. This paper introduces the principle and design method of the function firmware of USB.

With a high speed and high versatility, USB has been the standard port between PC and peripheral equipment. USB can be widely used in Biomedical Engineering, though it is very difficult to develop. This paper is to indicate the principles and design methods of USB application software under Windows and WDM driver for USB device.

Nervous function stimulating system is a stimulus delivery and experimental control software system for neuroscience.The purpose of this paper is to indicate the principle and design method of nervous function stimulating system based on USB Bus.It was designed for behavioral and physiological experiments using FMRI,ERP,MEG,reaction times,and single neuron recording.

Ambulatory precise body temperature monitoring system is a portable device that could monitor body temperature precisely.The purpose of this paper is to indicate the principle and design method of ambulatory precise body temperature monitoring system based on Digital Thermometer.It could provide high-time-resolution and high-precision body temperature data for clinical research.

Pilot Integrated Psychometric System is a stimulus delivery and experimental control system for psychometrics. The purpose of this paper is to indicate the principle and design method of Pilot Integrated Psychometric System based on personal computer system. The system was designed for pilots' physiological experiments by using comprehensive professional tests. The principle and method of this system are also discussed.

0.05);the infection rate of incision in study group(1.28%)was lower than that in control group(10.26%) significantly (P

The principle and characteristics of I2C BUS are introduced as well as its application in multi physiological parameters measurement system.The hardware and software design of I2C BUS of multi physiological parameters measurement system are discussed.The system achieves the purpose of the design and the technology of I2C BUS meets the requirement in multi physiological parameters measurement system,including the acquisition of low frequency physiological parameters.I2C BUS predigests the design of hardware and software,thus reducing the cost of system.[Chinese Medical Equipment Journal,2008,29(2):91-93]

Objective:To investigate the predictive value of mucosal vascular pattern (MVP) under narrow-band imaging (NBI) enteroscopy in patients with ulcerative colitis (UC) in clinical remission for histological healing and clinical recurrence.Methods:A total of 142 patients with UC in clinical remission who visited the First Affiliated Hospital of Weifang Medical University from January 2018 to January 2021 were included in the study and underwent colonoscopy. The white light and NBI endoscopic images were collected and biopsies were obtained. The Mayo endoscopic score (MES) was calculated based on white light images, and MVP staging was evaluated based on mucosal vascular patterns under NBI. Nancy index (NI) was used to evaluate histological healing and patients were followed up for 1 year. The Spearman correlation coefficients of MES and MVP with histological healing and recurrence were calculated. The receiver operator characteristic (ROC) curve was plotted and the area under curve (AUC) was applied to evaluate the accuracy of white light and NBI endoscopy for predicting histological healing of UC in clinical remission.Results:According to the MVP criteria, 47 were defined as clear, 63 blurred, and 32 invisible. Spearman correlation analysis showed a significant correlation between MVP under NBI and histological healing ( r=0.549, P<0.001) and a moderate correlation between MES under white light and histological healing ( r=0.462, P<0.001). Spearman correlation analysis showed a moderate correlation between MVP under NBI and clinical recurrence ( r=0.451, P<0.001) and a moderate correlation between MES under white light and clinical recurrence ( r=0.352, P<0.001). AUC of NBI for diagnosing histological healing of UC in clinical remission was 0.809 (95% CI: 0.738-0.879), with a sensitivity of 84.6% (77/91) and specificity of 64.7% (33/51), superior to the white light endoscopy, of which AUC, sensitivity and specificity were 0.763 (95% CI: 0.678-0.848), 81.3% (74/91) and 66.7% (34/51). Conclusion:MVP staging under NBI could predict histological healing of UC patients in clinical remission and is superior to white light endoscopy.