In order to improve the wearing comfort and bearing effectiveness of the exoskeleton, based on the prototype and working mechanism analysis of a relaxation wearable system for knee exoskeleton robot, the static optimization synthesis and its method are studied. Firstly, based on the construction of the virtual prototype model of the system, a comprehensive wearable comfort evaluation index considering the factors such as stress, deformation and the proportion of stress nodes was constructed. Secondly, based on the static simulation and evaluation index of system virtual prototype, multi-objective genetic optimization and local optimization synthesis of armor layer topology were carried out. Finally, the model reconstruction simulation data confirmed that the system had good wearing comfort. Our study provides a theoretical basis for the bearing performance and prototype construction of the subsequent wearable system.
Objective To compare the advantages between SmartCare weaning and protocoldirected weaning in COPD patients regarding five aspects including comfort degree of COPD patients in weaning stage, workload of medical staff, weaning success rate, weaning time, and complications associated with mechanical ventilation. Methods COPD patients who’s planning to receive ventilation weaning were randomly divided into a SmartCare weaning group ( SC group) and a protocol-directed weaning group ( SBT group) . The comfort degree of patients and workload of medical staff were assessed by the visual analogue scale ( VAS) as the weaning plan started. 0 was for the most discomfort and maximal workload, and 10 was for the most comfort and minimal workload. Data fromthe following aspects had been recorded: times of blood gas analysis, weaning success rate, weaning time, self-extubation rate, the rate of re-intubation within 48 hours, and ventilator-associated pneumonia ( VAP) incidences. Results 40 patients were selected and divided into the SC group ( n =19) and the SBT group ( n =21) . There was no significant difference in the enrolled age and APACHEⅡ between two groups. The VAS scores was higher in the SC group than that in the SBT group in the first three days ( Plt;0.01) . The weaning time was shorter in the SBT group than that in the SBT group [ ( 4.7 ±2.7) days vs. ( 5.5 ±3.2) days] , without significant difference between two groups ( P gt;0.05) . There were no differences in times of blood gas analysis, weaning success rate, weaning time, self-extubation rate, the rate of re-intubation within 48 hours, and ventilator-associated pneumonia ( VAP) incidences between two groups ( P gt; 0.05) .Conclusion As compared with protocol-directed weaning, SmartCare weaning can increase comfort degree of patients and reduce the workload of medical staff with similar weaning success rate, weaning time, and complications associated with mechanical ventilation.
ObjectiveTo compare the differences in preventing subcutaneous effusion, skin flap necrosis, and patient comfort between simple negative pressure drainage and negative pressure drainage combined with chest compression bandaging after radical mastectomy for breast cancer. MethodsOne hundred and ninety-six patients underwent radical mastectomy for breast cancer from January 2010 to December 2012 in this hospital were collected.The simple negative pressure drainage (SNPD group, n=84) and negative pressure drainage combined with chest compression bandaging (NPD+CB group, n=112) after radical mastectomy for breast cancer were used to prevent postoperative subcutaneous effusion.The postoperative complications, postoperative 3 d drainage volume, and patient comfort were compared in two groups. ResultsOne hundred and ninety-six patients with breast cancer were females.The differences of general clinical data were not statistically significant in two groups (P > 0.05).The differences of chest wall mean extubation time, axillary mean extubation time, postoperative 3 d mean drainage volume, and incidences of subcutaneous effusion and skin flap necrosis were not statistically significant in two groups (P > 0.05).The rate of comfort satisfactory in the SNPD group was significantly higher than that in the NPD+CB group [76.2%(16/84) versus 22.3%(25/112), P < 0.001].The chemotherapy was not affected after operation in two groups. ConclusionsComparing with negative pressure drainage combined with chest compression bandaging, simple negative pressure drainage do not increase postoperative subcutaneous effusion and skin flap necrosis, but it greatly improves the patients satisfactory rate.
Objective To investigate the effectiveness of the reverse traction device in the preoperative treatment of high-energy tibial plateau fractures. Methods A retrospective study was conducted to analyze the clinical data of 33 patients with high-energy tibial plateau fractures who met the selection criteria between December 2020 and December 2023. All patients were treated by open reduction and internal fixation. According to the preoperative traction method, they were divided into the observation group (16 cases, treated with a reverse traction device on the day of admission) and the control group (17 cases, treated with heel traction on the day of admission). There was no significant difference in baseline data such as gender, age, body mass index, affected side, cause of injury, fracture Schatzker classification between the two groups (P>0.05). Preoperative waiting time, preoperative related complications (nail channel loosening, nail channel oozing, nail channel infection, soft tissue necrosis, soft tissue infection, deep vein thrombosis of the lower extremity, etc.), operation time, and total hospitalization time were recorded and compared between the two groups. On the 4th day after traction, visual analogue scale (VAS) score was used to evaluate the pain relief of the patients, the swelling value of the affected limb was measured, and the Immobilization Comfort Questionnaire (ICQ) score was used to evaluate the perioperative hospital comfort of the patients. Results Both groups of patients completed the operation successfully, and the operation time, total hospitalization time, and preoperative waiting time of the observation group were significantly less than those of the control group (P<0.05). There was no preoperative related complications in the observation group; in the control group, 3 patients had nail channel loosening and oozing, and 2 cases had the deep vein thrombosis of the lower extremity; the difference in the incidence of complication between the two groups was significant (P<0.05). On the 4th day after traction, the ICQ score, VAS score, and limb swelling value of the observation group were significantly better than those of the control group (P<0.05). X-ray films showed that the tibial plateau fracture separation and lower limb alignment recovered after calcaneal traction in the control group, but not as obvious as in the observation group. The fracture gap in the observation group significantly reduced, the tibial plateau alignment was good, and the lateral angulation deformity was corrected. Conclusion The use of reverse traction treatment in patients with high-energy tibial plateau fractures on admission can accelerate the swelling around the soft tissues to subside, reduce patients’ pain, shorten the preoperative waiting time, improve the patients’ preoperative quality of life, and contribute to the shortening of the operation time, with a good effectiveness.
ObjectiveTo evaluate the effect of postoperative no indwelling urethral catheters in lung operation. MethodsIn this prospective cohort study, we recruited 100 patients who were scheduled for pulmonary lobectomy under general anesthesia in a single institution of Thoracic Surgery Department in West China Hospital between April and December 2014. These patients were divided into two groups including a no indwelled urethral catheter group (NIUC, 50 patients) and an indwelled urethral catheter group (IUC, 50 patients). The clinical effect was compared between the two groups. ResultsThere was no statistical difference in incidence of postoperative urinary retention or urinary tract infection between the two groups (P=0.433, 0.050). However, the comfort degrees(0 degree) of patients in the NICU group was significantly higher than that of the ICU group with a statistical difference (P=0.002). While postoperative hospitalization time in the NICU group (P=0.023) was shorter than that in the ICU group (P=0.004). Prostatic hyperplasia was the high risk factor for the lung postoperative urinary retention (P=0.056). ConclusionPostoperative no indwelling urethral catheters in lung operation has the benefit of improving the comfort degrees of inpatients and increasing the postoperation urinary retention.
ObjectiveTo determine if comfort level was associated with chest tube size(16F or 28F) among lung cancer patients with video-assisted thoracoscopic surgery (VATS) lobectomy. MethodsWe performed VATS lobectomy for 163 patients with lung cancer in our hospital between February and May 2014. There were 70 males 93 females. The patients were allocated into two groups including a 28F group and a 16F group. There were 75 patients at age of 53.18±14.73 years with insertion of one chest drain of 28F in the 28F group. And there were 88 patients at age of 56.62±12.62 years with insertion of one chest drain of 16F in the 16F group. Heart rate and variation of pulse, breathing rate and variation of breathing rate, pain scores, comfort level, and activities daily living (ADL) of the two groups were compared. ResultsThere was no significant difference in the patient characteristics and operation data between the two groups. There were statistical differences in variation of heart rates on the 1st day, 2nd day, and 3rd day after operation between the 16Fgroup and the 28F group (9.67±3.33 times/min vs.18.54±5.33 times/min, P=0.037; 7.89±2.88 times/min vs. 19.01±4.67 times/min, P=0.045; 7.67±3.01 times/min vs. 20.88±5.34 times/min, P=0.021). The percentage patients of mild pain in the 16F group (77.65%) was higher than that in the 28F group (49.78%, P=0.023) with a statistical difference. The independent ambulation and comfort level in the 16F group(67.05%, 67.05%) were significant higher than those in the 28F group (45.78%,55.11%, P=0.023, P=0.026). ConclusionOur findings suggest that drainage via a small-bore chest tube provides meaningful postoperative comfort level in the patients with VATS lobectomy.
This paper aims to explore the thermal feelings of different cover materials effect on wheelchair cushion comfortableness, and to build a mathematical model for motorized wheelchair cushion comfortableness. By measuring temperature and humidity between the contact face of motorized wheelchair cushion and human body as well as the setting posture adjustment time while cushion cover materials are nylon cloth, leather, fishnets cloth. At the same time, each volunteer took a questionnaire about the comfort of different cushion cover materials. Results showed that fishnets cloth was most comfortable, leather was worst, while nylon cloth was in between the two. The experimental objective data were consistent with the subjective data. We built a back propagation (BP) neural network mathematical model for motorized wheelchair cushion comfortableness. This study will provide objective reference to motorized wheelchair for the designers and users.