ObjectiveTo review the current status and progress of sterilization and preservation for allograft in anterior cruciate ligament reconstruction.MethodsThe related literature about the sterilization and preservation of allografts in anterior cruciate ligament reconstruction was extensively reviewed and summarized.ResultsThere are many sterilization methods for allografts, the most commonly used method is γ-ray irradiation, but the optimal irradiation dose is still unclear. Electron beam irradiation is also available, but excessive dose is harmful to graft shaping. A combined sterilization method combining physics and chemistry methods is still being explored. Cryopreservation is the most commonly used method of preservation. In order to reduce the influence of crystals, the principle of " slow cooling and rapid rewarming” should be adhered to as far as possible.ConclusionThe processing methods of allograft can affect the effectiveness of anterior cruciate ligament reconstruction. The clinical doctors should consider the sterilization and preservation methods in practice.
Objective To investigate the current situation of sterile supply management in primary healthcare institutions in Pudong New Area of Shanghai, analyze the existing problems, and provide a scientific basis for formulating and implementing follow-up improvement measures. Methods The primary healthcare institutions in Pudong New Area were surveyed from June to July 2024. The contents of the questionnaire included the nature of the institution, sterile supply mode, personnel, facilities and equipment configuration, quality monitoring and sterile supply management. Results A total of 71 valid questionnaires were collected, including 25 public institutions and 46 non-public institutions; 29.6% used the sterile supply mode outside the hospital, and 70.4% used the sterile supply mode inside the hospital. In primary healthcare institutions with in-hospital sterile supply mode, part-time staff accounted for 46.1%, staff under the age of 40 accounted for 69.5%, professional qualification holding rate was high (94.3%), and their education was mainly junior college (60.3%). Healthcare institutions were all equipped with steam sterilizers, and the configuration rate of cleaning and disinfection machines (92.0%) were high, but the configuration rate of water treatment and drying equipment (70.0%), information traceability system (48.0%) and low-temperature sterilizers (10.0%) were low. Disinfection and sterilization quality monitoring had been widely carried out (96.0%), but the cleaning quality monitoring rate was low (88.0%). The implementation rate of multiple requirements exceeded 96%, but the utilization rate of information traceability system was low (36.0%). The proportion of primary healthcare institutions with out-of-hospital sterile supply mode that conducted quality monitoring, requested quality reports and carried out on-site inspection on the goods provided by the service provider were less than 80%. The proportion of healthcare institutions with full-time personnel, contaminated equipment collection and temporary storage room and sterile goods handover and distribution room did not exceed 80%, and the utilization rate of information traceability system was also less than 50%. Conclusions There are still deficiencies in personnel allocation, equipment and facilities, quality monitoring and system implementation of sterile supply management in primary healthcare institutions in Pudong New Area.
Objective To verify the technics of inactivating/removing virus in collagen sponge derived from bovine Achilles tendon. Methods Possible pathogen species were determined according to the raw material of bovine Achilles tendon used in production, then vesicular stomatitis virus (VSV), theiler’s mouse encephalomyelitis virus (TEMV), pseudorabies virus (PRV), and simian vacuolating virus 40 (SV40) were selected as indicator virus. Virus suspension was prepared in accordance with Technical Standard for Disinfection. 60Co radiation 25 kGy of collagen sponge was determined as inactivating/removing virus process according to the analysis of the manufacture process, the virus inactivation/removal effect was verified by the measurement of median tissue culture infective dose (TCID50) and showed by virus reduction factor (sample average values of numerical difference before and after processing). Results Reduction factors of VSV, TEMV, PRV, and SV40 after 60Co radiation 25 kGy were 5.646, 4.792, 5.042, and 5.292 logTCID50/0.1 mL (logs), respectively. Reduction factor of each indicator virus was greater than 4 logs, showing that 60Co irradiation 25 kGy can effectively inactivate and remove viruses. Conclusion 60Co radiation 25 kGy of collagen sponge derived from bovine Achilles tendon can be used as the technics of inactivating/removing virus during the preparation process of collagen sponge to guarantee the safety of the product.
In this study, silicone hand was disinfected by homemade touchable non-thermal plasma to simulate and evaluate its feasibility of application on human hand. Experimental results showed that there was no significant difference whenEscherichia coli (E. coli),Staphylococcus aureus (S. au),Staphylococcus albus (S. al), andPseudomonas aeruginosa (P. ae) were loaded on the silicone hand surface and treated with plasma. The efficiency of plasma disinfection was higher when the treatment time was prolonged or initial bacterial density was lower. When initial bacterial number was 1.0×106–1.0×107 CFU, the plasma disinfection process mainly occured in the first 5 s and more than 99% of bacteria could be disinfected. This study can provide guidelines for the development of a new plasma device for human hand disinfection.