During the course of meibomian gland dysfunction (MGD) treatment, meibomian gland massage is an effective auxiliary method. Based on an extrusion method using anti-phase massage rollers and a theory on envelope plane, a massage mechanism was proposed in this paper for the defect of the traditional mechanical assist massage structure to discharge obstruction of Meibomian gland more smoothly and to enlarge massage coverage. Meanwhile, for the case that the power of motor was significantly limited by size, an evaluation, about the input, output and loss, was carried out to initially verify the feasibility of the designed mechanism.
Eyelid Diseases ; therapy ; Humans ; Massage ; instrumentation ; Meibomian Glands

Objective:To investigate the diagnosis and treatment significance of invasive and noninvasive operation for ventilator?as?sociated pneumonia ( VAP ) . Methods:A total of 80 cases of VAP suspected patients who had received mechanical ventilation at least 48 hours in ICU from Jun 2014 to Mar 2015 were enrolled. Patients were randomly divided into four groups including noninvasive operation group ( F) , invasive operation group ( Q) , mix group 1 ( H1) and mix group 2 ( H2) . VAP diagnosis rate between groups as well as living time, antibiotic use time, survival rate, calcitonin levels and APACHE II score, oxygenation index were analyzed. Results:Specimen from invasive operation had higher specimens to cultivate positive rate than that from noninvasive operation ( P<0?05), but there was no statistic significant difference in VAP diagnosis rate between two methods (P>0?05). Conclusion:Noninva?sive operation collecting samples for VAP diagnosis is also accurate as invasive one. Collecting specimens from sputum suction tube in the clinical treatment on airway suction is a low cost and simple noninvasive operation.

Objective To investigate the relationship between vitamin A and vitamin E concentra-tions and preeclampsia. Methods A total of 160 pregnant women who were finished normal perinatal care and tested for serum vitamin A and vitamin E concentrations in the First Affiliated Hospital of Shenzhen Uni-versity (Shenzhen Second People's Hospital) from March 1, 2018 to February 28, 2019, including 80 pre-eclampsia cases and 80 healthy control cases were enrolled in the study. The concentrations of serum vita-mins A and E in early pregnancy ( <14 weeks) and late pregnancy (≥34 weeks) were determined by high performance liquid chromatography tandem mass spectrometry. The collected clinical and test data were sta-tistically analyzed. Results ⑴There was no significant difference in vitamin A concentration between pre-eclampsia group and control group during early pregnancy (P=0. 360) and there was no significant differ-ence in vitamin A concentration between preeclampsia group and control group during late pregnancy ( P=0. 450). ⑵ The concentration of vitamin E in early pregnant women in preeclampsia group was [(9. 51 ± 2. 82)mg/L], which was lower than that in healthy control group [(11. 19 ± 3. 04)mg/L], with significant statistically difference (t=8. 85, P=0. 01); the vitamin E concentration in late pregnant women in pre-eclampsia group was [(13. 52 ± 4. 40)mg/L], which was lower than that in healthy control group [(16. 20 ± 5. 00)mg/L], with significant statistically difference (t=10. 9, P=0. 01). ⑶Logistic regression anal-ysis showed that there was a correlation between vitamin E concentration in early pregnancy and late preg-nancy and preeclampsia. Conclusions There was no significant correlation between vitamin A concentra-tion and preeclampsia. Vitamin E may be involved in the pathogenesis of pre-eclampsia.