微波热凝对胆囊粘膜损伤修复的形态学观察

目的：通过微波热凝对胆囊粘膜损伤后修复的形态学观察，为胆囊息肉的内镜切除提供了理论依据。方法：内镜下将自制微波电极对胆囊不同部位的粘膜行不同功率的热凝，定期取标本作组织形态学观察。结果：当微波功率在３０～５０ｍＡ，９秒时，胆囊粘膜凝固性坏死，继而以柱状上皮再生修复．胆囊底内镜戳孔处一期缝合后，粘膜愈合良好．结论：合适功率的微波热凝对胆囊粘膜的损伤是可逆的，微波热凝术是安全可靠的．从而进一步证明了经内镜微波胆囊息肉切除术的可行性。     

WBY－1型微波牙科手机消毒器的研究

检测ＷＢＹ－１型微波牙科手机消毒器消毒效果表明，微波与０．１０％增效剂协同作用１分钟，可将大肠杆菌、绿脓杆菌、金黄色葡萄球菌与白色念珠菌完全杀灭，并将ＨＢｓＡｇ抗原性破坏。对类炭疽杆菌芽胞可杀灭９９．９９％。经医院试用，可杀灭手机表面自然菌９９．３１％～９９．８７％，并将ＨＢｓＡｇ抗原性破坏。该消毒法对手机无损坏作用。     

Microwave‐Accelerated Polymerization of 2‐Phenoxymethyl‐1,4,6‐trioxaspiro[4,4]nonane with Diglycidyl Ether of Bisphenol A

The cationic copolymerization of 2‐phenoxymethyl‐1,4,6‐trioxaspiro[4,4]nonane with DGEBA under microwave irradiation using ytterbium and lanthanum triflates as initiators is described. A comparison with thermal heating showed a great enhancement in the reaction rates and a higher SOE incorporation in the network. The double ring opening of SOE reduces the usual shrinkage of epoxy resins on curing, and it was lower under microwave irradiation. Moreover, the ytterbium triflate initiator lead to a higher incorporation of linear ester moieties in the network than lanthanum triflate.

     

Utility of microwave processed cell blocks as a complement to cervico-vaginal smears

Cell blocks have largely been neglected in cervical cytology. The aim of this study was to determine if microwave processed cell blocks prepared from residual material on sampling devices could add to the diagnostic accuracy of cervico-vaginal smears. The material remaining on the spatula after making cervical smears was rinsed in ethanol and used to prepare microwave-processed cell blocks in 260 patients. Both Papanicolaou (Pap) smears and cell block sections were examined independently. The sensitivity and specificity of both techniques for detection of malignancy and intraepithelial lesions were calculated. Sensitivity and specificity for cytology smear for detection of malignancy were 79.16% and 100%, respectively. The sensitivity and specificity of cell block were 86.3% and 100%, respectively. The quality of the section and staining after microwave processing was excellent. Our modified technique using microwave fixation and processing substantially reduced the turn around time. Microwave processed cell blocks prepared from residual cervico-vaginal specimens on sampling devices can add to the diagnostic accuracy of Pap smear without patients needing to undergo an additional procedure.     

Nanoparticle-mediated cryosurgery for tumor therapy

Cryosurgery is an energy-based surgical technique. It is minimally invasive and has fewer side effects than surgical resection. However, its insufficient freezing to target tumor and unavoidable injury to healthy tissue have restricted its success. Nano-cryosurgery is the combination of cryogenic biomedicine and nanotechnology. Its principle is to introduce a nanoparticle solution into target tissues to maximize heat transfer, lower the end temperature, increase ice ball formation, and prevent healthy tissues from being frozen. This review covers common nanoplatforms for nano-cryosurgery. The characteristics, advantages, potential challenges, future prospects of applying nano-cryosurgery are discussed in detail.     

食管乳头状瘤研究分析

目的 探讨食管乳头状瘤的内镜、临床病理特点。方法 对25例食管乳头状瘤的胃镜、病理及临床资料进行回顾性总结分析。结果 食管乳头状瘤好发于食管中下段，食管上1／3有1例(4％)，中段11例(44％)，下段13例(52％)，食管中下段24例(96％)；内镜下易误诊为食管息肉，11例内镜下治疗后随访6～36个月未见复发，3例并发其他部位肿瘤；病理学检查未见食管乳头状瘤恶变依据，仅有3例轻到中度异型增生；食管乳头状瘤临床表现无特异性，与反流性食管炎相似。结论 黏膜的慢性炎症刺激等因素在食管乳头状瘤的发病中起一定作用；加强对食管乳头状瘤病人邻近脏器的检查和随访非常重要；食管乳头状瘤是否为癌前病变值得进一步研究。     

枯草杆菌黑色变种芽胞经微波与洗必泰协同作用后超微结构的变化

电镜观察，经３２０Ｗ微波单独作用５分钟的芽胞，其外壳层次模糊，而经与１％洗必泰协同作用者，外壳皱缩，层次消失，核区出现透电子区。对繁殖体观察，结果与芽胞类似，程度较严重。     

长骨骨巨细胞瘤微波高温治疗肢体关节功能观察评定

目的评价长骨骨巨细胞瘤原位分离插入式微波天线阵列诱导高温原位灭活治疗后肢体关节功能。方法应用原位分离插入式微波天线阵列诱导高温灭活技术治疗46例长骨骨巨细胞瘤,从手术技术、肢体关节功能等方面全面综合评价此方法临床应用后肢体关节功能学结果。结果应用该方法治疗46例长骨骨巨细胞瘤,平均随访7.6年。肢体关节功能评定:好者44例,可者2例,差者0例。结论应用原位分离插入式微波天线阵列诱导高温治疗长骨骨巨细胞瘤能获得优良的肢体关节功能。     

微波对医疗文件消毒效果的观察

调查表明,医院医疗文件有不同程度的细菌与HBsAg污染。实验室试验,用2450 MHz微波,在650W功率条件下,可使医院医疗文件达到消毒要求。消毒效果可受温度和文件量影响。表层的文件较中间层文件消毒为慢。     

Magnetron-based inline microwave fluid warmer

Objective. To develop an in-line microwave fluid warming system that eliminates the difficulties of uneven heating that are characteristic of batch-mode microwave fluid warmers.Methods. Using a commercial microwave oven, we developed a method for warming fluid as it flowed through tubing along a defined path in the oven's cavity. Algorithms utilizing either proportional or adaptive control were used to control microwave heating cycles by varying the heating pulse-width during 3-second epochs. Methods of fluid entry and exit were devised to minimize microwave leakage. Heating performance was tested using icewater at multiple flow rates from 18 mL/min to 105 mL/min.Results. In all warming tests, the system achieved temperature control without exceeding the maximum temperature allowable based on American Association of Blood Banks requirements. The adaptive control maintained the set temperature, with peak-to-peak oscillations of 2°C or less. Microwave leakage was below the commercially required limit for home microwave appliances.Conclusions. The combination of proportional and adaptive control is successful in controlling the permanent magnet magnetron microwave energy to heat the icewater tested. The in-line microwave warmer has the potential to become a successful medical fluid warmer. More study is needed to determine the stability of the control system under clinical conditions, and to evaluate its utility for warming blood.