Objective:To construct an evaluation indicator system for power system of otolaryngology surgery,so as to provide references for the configuration of surgical power devices of medical institutions.Methods:Literature review and brainstorming were used to analyze existing literature related to surgical power.Combined with expert opinions and clinical demands,an evaluation indicator system was initially proposed.The Delphi method was adopted to determine the evaluation indicators of power system of otolaryngology surgery.The analytic hierarchy process(AHP)method was used to determine the evaluation indicator system of the power system of otolaryngology surgery,which were constructed by weight of each indicator.Results:The evaluation indicator system of power system of otolaryngology surgery included 5 first-level indicators(integrity of medical equipment,products'performance indicators,safety,clinical application effect,and after-sales service guarantee)and 49 second-level indicators under the first-level indicators.In the first-level indicators,equipment's safety had the highest weight(20.48%).In the second-level indicators,the top three of the combined weights were respectively integrity of equipment's main device(7.19%),accessory's integrity(7.03%),and identification's integrity(6.03%).Conclusion:The evaluation index system for otolaryngological surgical power systems clarifies the core dimensions,specific indicators and relative importance of the evaluation,and can be applied to the procurement and selection of surgical power devices in medical institutions,performance testing,clinical effect evaluation and other aspects.

Objective:To explore the accuracy of parameters of anterior segment measurement assessment system and optical biometer in predicting lens in implantable collamer lens(ICL)implantation.Methods:This study retrospectively analyzed the examination data of patients who underwent ICL surgery at the department of ophthalmology,Army Characteristic Medical Center from January 2020 to July 2024.The measured data of the chamber corner parameters,which included anterior chamber depth(ACD),central corneal thickness(CCT),white to white(WTW),flat keratometry(K1)and steep keratometry(K2),of 74 patients(134 eyes)who underwent simultaneous measurements of the IOLMaster 700 optical biometer and the Pentacam HR anterior segment measurement assessment system were selected.The expected spherical equivalent(EXP SPH),expected cylinder(EXP CYL),and expected spherical equivalent(EXP SEQ)were calculated,and the differences,correlations and consistencies of these data were analyzed.Results:There were significant differences in ACD,CCT,WTW,K1 and K2 between the IOLMaster 700 and Pentacam HR in measuring myopic patients(t=12.928,6.202,-37.877,-13.743,-12.007,P<0.001).All measured data showed high correlation(r=0.983,0.984,0.961,0.996,0.994,P<0.001).Bland-Altman consistency test showed that the measured values by 3%-6%were outside the limits of 95%consistency,and the differences among the EXP SPH of two instruments and the postoperative actually measured results of spherical lens(SPH),among the EXP CYL of two instruments and the postoperative actually measured results of cylinder lens(CYL),and among the EXP SEQ of two instruments and the postoperative actual measured results of spherical equivalent(SEQ)were statistically significant(x2=20.927,7.451,25.459,P<0.05).The average differences between Pentacam HR and IOLMaster 700 were respectively(0.024±0.491)D and(0.009±.491)D in predicting SPH,and were respectively(-0.05±0.476)D and(-0.049±0.475)D in predicting CYL,and were respectively(-0.001±0.458)D and(-0.016±0.461)D in predicting SEQ.Conclusion:During selection process of ICL surgery for lens,clinicians can reasonably choose Pentacam HR and IOLMaster 700 to calculate lens according to the actual requirements of the patients.

Objective:To construct an evaluation indicator system for power system of otolaryngology surgery,so as to provide references for the configuration of surgical power devices of medical institutions.Methods:Literature review and brainstorming were used to analyze existing literature related to surgical power.Combined with expert opinions and clinical demands,an evaluation indicator system was initially proposed.The Delphi method was adopted to determine the evaluation indicators of power system of otolaryngology surgery.The analytic hierarchy process(AHP)method was used to determine the evaluation indicator system of the power system of otolaryngology surgery,which were constructed by weight of each indicator.Results:The evaluation indicator system of power system of otolaryngology surgery included 5 first-level indicators(integrity of medical equipment,products'performance indicators,safety,clinical application effect,and after-sales service guarantee)and 49 second-level indicators under the first-level indicators.In the first-level indicators,equipment's safety had the highest weight(20.48%).In the second-level indicators,the top three of the combined weights were respectively integrity of equipment's main device(7.19%),accessory's integrity(7.03%),and identification's integrity(6.03%).Conclusion:The evaluation index system for otolaryngological surgical power systems clarifies the core dimensions,specific indicators and relative importance of the evaluation,and can be applied to the procurement and selection of surgical power devices in medical institutions,performance testing,clinical effect evaluation and other aspects.

Objective:To explore the accuracy of parameters of anterior segment measurement assessment system and optical biometer in predicting lens in implantable collamer lens(ICL)implantation.Methods:This study retrospectively analyzed the examination data of patients who underwent ICL surgery at the department of ophthalmology,Army Characteristic Medical Center from January 2020 to July 2024.The measured data of the chamber corner parameters,which included anterior chamber depth(ACD),central corneal thickness(CCT),white to white(WTW),flat keratometry(K1)and steep keratometry(K2),of 74 patients(134 eyes)who underwent simultaneous measurements of the IOLMaster 700 optical biometer and the Pentacam HR anterior segment measurement assessment system were selected.The expected spherical equivalent(EXP SPH),expected cylinder(EXP CYL),and expected spherical equivalent(EXP SEQ)were calculated,and the differences,correlations and consistencies of these data were analyzed.Results:There were significant differences in ACD,CCT,WTW,K1 and K2 between the IOLMaster 700 and Pentacam HR in measuring myopic patients(t=12.928,6.202,-37.877,-13.743,-12.007,P<0.001).All measured data showed high correlation(r=0.983,0.984,0.961,0.996,0.994,P<0.001).Bland-Altman consistency test showed that the measured values by 3%-6%were outside the limits of 95%consistency,and the differences among the EXP SPH of two instruments and the postoperative actually measured results of spherical lens(SPH),among the EXP CYL of two instruments and the postoperative actually measured results of cylinder lens(CYL),and among the EXP SEQ of two instruments and the postoperative actual measured results of spherical equivalent(SEQ)were statistically significant(x2=20.927,7.451,25.459,P<0.05).The average differences between Pentacam HR and IOLMaster 700 were respectively(0.024±0.491)D and(0.009±.491)D in predicting SPH,and were respectively(-0.05±0.476)D and(-0.049±0.475)D in predicting CYL,and were respectively(-0.001±0.458)D and(-0.016±0.461)D in predicting SEQ.Conclusion:During selection process of ICL surgery for lens,clinicians can reasonably choose Pentacam HR and IOLMaster 700 to calculate lens according to the actual requirements of the patients.

Objective:To research the quality control and testing methods of polysomnography and to ensure its safe and effective performance.Methods:A quality control testing method was designed for the main indicators of EEG signal,EMG signal,ECG signal,and pulse oxygen saturation of polysomnography.In August 2023,two polysomnography instruments of the same brand and different models(marked as Test Equipment A and Test Equipment B)in clinical use in Daping Hospital,Army Medical University were selected.The quality control testing of polysomnography instrument was conducted by using electroencephalogram calibration instrument and vital sign simulator to evaluate the reliability of the performance of polysomnography.Results:A quality control testing method was developed for quality control testing of polysomnography aiming at the repeatability of the indicated values of EEG signals,EMG signals,ECG signals,and pulse oxygen saturation of polysomnography.Except for the output value of 2 mV of the voltage measurement simulator of test equipment B,the relative error of the recorded data was-11%,and the parameters were out of tolerance,and the rest of the test data of test equipment A and test equipment B met the maximum limit output value of the national metrology verification regulations and the technical requirements of the equipment manufacturer.Conclusion:The quality control detection method of polysomnography can evaluate the performance parameters of the selected testing equipment A and testing equipment B,and provide technical support for the quality control detection and safe use of such equipment.

A corresponding calibration method was proposed for the key performance parameters of the endoscopic liquid expansion pump,such as the pressure indication error,the flow rate indication error and the flow rate repeatability.4 different brands of endoscopic liquid expansion pumps in clinical use in the hospital were selected for calibration,and the feasibility of the calibration method was evaluated.In the pressure and flow range of the endoscope liquid expansion pump,3 calibration points of high,medium and low were selected,and each flow point was calibrated 3 times.The calibration results showed that the maximum error of pressure indication was 4.3%,the maximum error of flow indication was 9.3%,and the maximum repeatability of flow indication value was 0.8%,all of which met the technical requirements for the maximum allowable error of"Medical Endoscopes.Endoscope Functional Supply Units.Irrigation Pump"(YY/T 0864-2011)and"Calibration Specification for Syringe Pumps and Infusion Pumps"(JJF 1259-2018).The calibration method for endoscopic liquid expansion pump can improve the metrological traceability system of this type of equipment,ensure the accuracy and reliability of equipment values,improve product quality,and ensure medical safety.

Objective:To study the changes of patient-related costs and the use of stents and other consumables before and after the centralized procurement of coronary stents.Methods:The inpatient medical insurance settlement case data of 1,973 patients with coronary stent implantation admitted to Daping Hospital of Army Medical University from December 2019 to October 2021 were selected.Among them,the data of 1,317 cases of percutaneous cardiovascular surgery and coronary stent implantation with serious or complications and accompanying disease group were slected according to disease diagnosis related groups(DRG),which were divided into the pre-centralized procurement group(667 cases)and the post-centralized procurement group(650 cases)according to the centralized procurement of coronary stents before and after.The costs of patients'medical consumables with the consumption of patients'medical consumables and the impact of the use of consumables such as coronary stents on the costs of medical consumables were compared.Results:There was no significant statistical difference in the hospitalization days and the average number of stents used in patients undergoing percutaneous cardiovascular procedures and coronary stent implantation with centralized procurement of coronary stents.There was a statistically significant difference in the total diagnosis and treatment cost,medical consumables cost,medicines and consumables cost and medicines cost between the pre-centralized procurement group and the post-centralized procurement group(Z=-22.316,-23.546,-22.917,-5.724,P<0.05).The cost of stents[16 260(13 300,32 272)yuan],the number of catheter guidewire balloon sheaths consumables[5(4,8)sets(pieces)],and the cost of catheter guidewire balloon sheaths consumables[8 719(5 805,15 372)yuan]in the pre-collection group were collected.There were statistically significant differences in the stent cost[1 059(590,1 770)yuan],the number of catheter guidewire balloon sheaths consumables[8(7,12)sets(pieces)],and the cost of catheter guidewire balloon sheaths consumables[5 708(3 392,12 871)yuan]between the two groups(Z=-30.452,16.582,-7.670,P<0.05).There was a statistical correlation between the cost of coronary stents and the cost of catheter guidewire balloon sheaths before and after centralized volume procurement on the cost of medical consumables for patients(r=0.903,0.473,0.785,0.953,P<0.05).The correlation coefficient between the cost of coronary stents and the cost of medical consumables for patients in the post-centralized procurement group decreased compared to the pre-centralized procurement group,the correlation coefficient between the cost of catheter guidewire balloon sheath and the cost of medical consumables for patients increased.Conclusion:The centralized procurement of coronary stents has a significant cost control effect on patients in the disease groups,and affects the cost structure of medical consumables.Combined with DRG reform,it can continuously improve the standardization and scientificity of clinical use of medical consumables.

Objective:To investigate the consistency of swept-source optical coherence tomography(SS-OCT)and time-domain optical coherence tomography(TD-OCT)in measuring the parameters of anterior chamber angle.Methods:A total of 46 myopic patients(92 eyes)were retrospectively selected from Department of Ophthalmology of Army Specialty Medical Center from January 2023 to May 2023.Both SS-OCT and TD-OCT were used to measure respectively the parameters of anterior chamber angle of patients.And then,the differences of central anterior chamber depth(ACD),angle opening distance(AOD500,AOD750),scleral spur angle(SSA),trabecular iris area(TISA500,TISA750)between SS-OCT and TD-OCT were compared and analyzed.The Pearson correlation analysis and Bland-Altman test were adopted to analyze and measure the correlation and consistency of the measures.Results:There was significant difference in ACD between the two kinds of scan methods(t=-6.83,P<0.001).Additionally,the differences of the AOD500,AOD750,SSA500,TISA500 and TISA750 of measured data beside of nose were significant(t=-5.16,5.51,-6.51,-4.75,-5.69,P<0.001),respectively.Similarly,the differences of them beside of temple were significant(t=-5.04,-4.8,-6.06,-3.84,-4.02,P<0.001),respectively.There was positive correlation between the two kinds of scan methods(r=0.71-0.92).The Bland-Altman analysis showed that 2.1% to 8.9% of the measured values were outside the consistency limit by 95%.Conclusion:There are differences between SS-OCT and TD-OCT in the measures of the parameters of anterior chamber angle of myopic patients,and the measured results of them appear positive correlation.

Objective:To study the technological roadmap of integrated development of digestive tract endoscopy and artificial intelligence precision medicine,and to provide research directions and feasible technological paths for the"overtaking on a curve"of domestic gastrointestinal endoscopy.Methods:The Delphi method was used to investigate the needs and research directions for the refinement of gastrointestinal endoscopy from the perspective of medical professionals.An analysis of development directions of artificial intelligence precision medical technology based on technical documents on artificial intelligence precision medical technology was conducted.The application scenarios and technology roadmap of early gastric cancer and inflammatory bowel disease patients were designed from four main service directions of precise diagnosis,precise treatment,precise medication,and precise health management of artificial intelligence precision medicine.Results:Two refined application scenarios were designed for precise diagnosis of early gastric cancer and precise health management of inflammatory bowel disease patients,the layout direction and feasible path were planned for the development of the new gastrointestinal endoscopy industry,and a technology roadmap for the development of intelligent gastrointestinal endoscopy industrywas formed.Conclusion:The technology roadmap for the integrated development of gastrointestinal endoscopy with artificial intelligence precision medicine provides a sustainable development path for addressing the patent blockade of foreign gastrointestinal endoscopy companies on domestic products,uneven distribution of medical resources in the field of gastroenterology,and early diagnosis and treatment of digestive system diseases.

According to the parameters of main indicators of pressurization device of blood transfusion and infusion,the calibration method was designed based on key technical parameters,which included pressure indication error,pressure output velocity,pressure release velocity,pressure bag airtightness,and overpressure protection. Three used pressurization devices of blood transfusion and infusion with different brands (labeled as Test Equipment A,Test Equipment B,and Test Equipment C) were selected to conduct calibration in the hospital,so as to assess the feasibility of calibration method,and to provide technique reference for evaluating the parameters of the performance. The calibration methods of pressurization device of blood transfusion and infusion were formulated from five aspects:pressure indication error,pressure output velocity,pressure deflation velocity,pressure bag airtightness and overpressure protection of pressurization device of blood transfusion and infusion. The results showed that the calibration method for pressurization device of blood transfusion and infusion,and the pressure and time recorder equipped with standard instrument of calibration can effectively calibrate the performance parameters of pressurization device of blood transfusion and infusion. The recorded data can meet the maximum limit output value of the manufacturer's technical requirements. The calibration method of pressurization device of blood transfusion and infusion can improve the metrological traceability system of such equipment,and ensure the safety and effectiveness of equipment performance,and enhance product quality,and reduce risks of clinical use,and guarantee medical safety.