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Bone is a dense, mineral-rich tissue with organic components. Implants such as plates and nails are used to reconstruct fractures. In orthopedic surgery, broad-spectrum of drills ranges from pneumatic to battery-operated to electric drills. Each drill has its own set of benefits and drawbacks.
Though the standard of care, the orthopedic battery dri...
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Introduction
The authors examined if the transparency in industry payments to foot and ankle-trained orthopedic surgeons resulted in the following changes to the (1) median general payments to surgeons, (2) trend in median payments to surgeons across all subcategory payments, and (3) trend in median payments to surgeons in 11 regions of the United...
one is a dense, mineral-rich tissue with organic components. Implants such as plates and nails are used to reconstruct fractures. Various
types of drills are used in orthopedic surgery, ranging from pneumatic and battery-operated to electric devices, each of which has its own
set of benefits and drawbacks.
Standard care is generally achievable thro...
Citations
... 6,7 However, while most components of surgical instruments, including semiconductors, can tolerate these conditions, the embedded battery cells may experience a reduced lifespan due to prolonged exposure to extreme heat. 8,9 Therefore, developing battery cells capable of withstanding autoclave conditions is a significant advancement in maintaining the functionality and longevity of battery-powered medical tools. For tools with removable battery cells, improvements can reduce replacement frequency, saving hospitals/clinics money and reducing excess battery waste. ...
Li[Ni0.6Mn0.4Co0.0]O2/graphite (NMC640, balanced for 4.1 V cut-off) and Li[Ni0.83Mn0.06Co0.11]O2/graphite (Ni83, balanced for 4.06 V cut-off) pouch cells were tested using lab-simulated autoclave conditions. After every cycle, the cells at either 3.4, 3.7, or 3.9 V were placed in a 120°C oven for 40 min to undergo an “autoclave” run, then continued for another cycle. Electrolyte blends using lithium bis(fluorosulfonyl)imide (LiFSI) salt were used to improve the cycle-life of autoclaved cells. The lab autoclave protocol was also performed on LiFePO4/graphite (LFP) and NMC commercial cylindrical cells, which were advertised for use in or found in autoclaved medical devices. LFP cells performed poorly in the simulated autoclave tests, while commercial high-temperature-tolerant NMC cylindrical cells and the pouch cells performed similarly. In continuous testing at 85°C, the pouch cells had better capacity retention than both cylindrical cell types. However, the pouch cells suffered from electrolyte permeation through the polymer seals. The pouch cell chemistries incorporated in cylindrical cell format would probably give superior performance to the commercial cells in the autoclave tests. Cell lifetimes were improved when cells were placed into the 120°C oven at a lower voltage suggesting that hospitals should charge Li-ion cells after the autoclaving process instead of standard practice of before.
