Objective To analyze the possible cause leading to death during the procecture oy IUD removal under hysteroscopy and how it could be prevented. Methods All （11 110） cases of IUD removal under hysteroscopy performed ...Objective To analyze the possible cause leading to death during the procecture oy IUD removal under hysteroscopy and how it could be prevented. Methods All （11 110） cases of IUD removal under hysteroscopy performed at 87 hospitals in Shanghai from 2001 to 2007 were reviewed. Four dead cases were reported. Results Air embolism was suspected as the cause of death. Associated risk factors included insufficient preoperative preparation, short duration between surgeries, non-standard procedure, careless observation and untimely resuscitation. Conclusion This emphasizes the necessity of early interventions taken such as prevention, early detection and management of the fatal complications.展开更多
Intramedullary interlocking nailing is a gold standard for treatment of tibial shaft fractures. Bending of a nail secondary to trauma is a rare complication, which may be encountered in healed or unhealed tibial shaft...Intramedullary interlocking nailing is a gold standard for treatment of tibial shaft fractures. Bending of a nail secondary to trauma is a rare complication, which may be encountered in healed or unhealed tibial shaft fractures. Removal of such bent nail is always a challenge. We reported this case to discuss various techniques for removal of bent nails and to share our experience in removing a bent tibial intramedullary nail in a 30-year-old man, who was admitted in our department with re-fracture of the right tibial shaft due to a roadside accident two years after the initial surgical treatment. The intramedullary nail, bent by 30 degrees and visible on anterioposterior as well as on lateral radiographs, was firstly weakened by partially cutting the convex wall, then straightened by applying external force, and finally removed by using the standard nail removal method.展开更多
To improve the quality and efficiency of peanut half-feed harvesting in clay hilly areas in South China and address problems such as excessive soil clumps,broken branches,and seedlings in pods,difficulty in cleaning i...To improve the quality and efficiency of peanut half-feed harvesting in clay hilly areas in South China and address problems such as excessive soil clumps,broken branches,and seedlings in pods,difficulty in cleaning impurities,and the need for manual picking owing to the high soil viscosity and easy hardening,a new half-feed peanut cleaning picker suitable for southern clay hilly areas,including its overall structure and transmission system,was designed.The picker can perform the operations of soil removal,clamping and conveying of seedlings,and orderly pod picking and pod gathering.The structural design of key components and the analysis and determination of key parameters were carried out.By adopting a crank rocker mechanism,a soil removal device was designed.A single-side chain clamping conveying device,which consists of a clamping chain,a pretightening spring,and a guide rail,was designed.A phase tangent configuration of opposite rollers was used to design a pod picking device.Thus,the functions of the half-feed peanut picker,such as cleaning and removing soil,smooth and reliable clamping and conveying,and flexible pod picking,were realized.The field test revealed that when the picking rate was greater than 97%,the soil removal pods drop rate was less than 10%,and the soil removal rate was greater than 50%.The performance indicators meet the design requirements.This study provides a technical reference for the research and development of clean picking technology for upright peanuts in the clay hilly areas of southern China.展开更多
文摘Objective To analyze the possible cause leading to death during the procecture oy IUD removal under hysteroscopy and how it could be prevented. Methods All （11 110） cases of IUD removal under hysteroscopy performed at 87 hospitals in Shanghai from 2001 to 2007 were reviewed. Four dead cases were reported. Results Air embolism was suspected as the cause of death. Associated risk factors included insufficient preoperative preparation, short duration between surgeries, non-standard procedure, careless observation and untimely resuscitation. Conclusion This emphasizes the necessity of early interventions taken such as prevention, early detection and management of the fatal complications.
文摘Intramedullary interlocking nailing is a gold standard for treatment of tibial shaft fractures. Bending of a nail secondary to trauma is a rare complication, which may be encountered in healed or unhealed tibial shaft fractures. Removal of such bent nail is always a challenge. We reported this case to discuss various techniques for removal of bent nails and to share our experience in removing a bent tibial intramedullary nail in a 30-year-old man, who was admitted in our department with re-fracture of the right tibial shaft due to a roadside accident two years after the initial surgical treatment. The intramedullary nail, bent by 30 degrees and visible on anterioposterior as well as on lateral radiographs, was firstly weakened by partially cutting the convex wall, then straightened by applying external force, and finally removed by using the standard nail removal method.
基金financially supported by National Natural Science Foundation of China(Grant No.52105263)Jiangsu Agricultural Science and Technology Innovation Fund(Grant No.CX(23)3028)+2 种基金Key Laboratory of Modern Agricultural Intelligent Equipment in South China,Ministry of Agriculture and Rural Affairs,China(Grant No.HNZJ202201)Key Laboratory of Agricultural Equipment for Hilly and Mountainous Areas in Southeastern China(Co-construction by Ministry and Province)Ministry of Agriculture and Rural Affairs(Grant No.QSKF202304).
文摘To improve the quality and efficiency of peanut half-feed harvesting in clay hilly areas in South China and address problems such as excessive soil clumps,broken branches,and seedlings in pods,difficulty in cleaning impurities,and the need for manual picking owing to the high soil viscosity and easy hardening,a new half-feed peanut cleaning picker suitable for southern clay hilly areas,including its overall structure and transmission system,was designed.The picker can perform the operations of soil removal,clamping and conveying of seedlings,and orderly pod picking and pod gathering.The structural design of key components and the analysis and determination of key parameters were carried out.By adopting a crank rocker mechanism,a soil removal device was designed.A single-side chain clamping conveying device,which consists of a clamping chain,a pretightening spring,and a guide rail,was designed.A phase tangent configuration of opposite rollers was used to design a pod picking device.Thus,the functions of the half-feed peanut picker,such as cleaning and removing soil,smooth and reliable clamping and conveying,and flexible pod picking,were realized.The field test revealed that when the picking rate was greater than 97%,the soil removal pods drop rate was less than 10%,and the soil removal rate was greater than 50%.The performance indicators meet the design requirements.This study provides a technical reference for the research and development of clean picking technology for upright peanuts in the clay hilly areas of southern China.
