ABSTRACT
Objective To develop a portable device for wound perfusion and negative-pressure therapy to solve the problem of the existing one.Methods The device used a unified waste liquid tank/liquid reservoir as the infrastructure,and had its reservoir and waste liquid bags made of flexible materials.Dynamic isolation between the reservoir bag and waste liquid bag was realized by a separator.Wound perfusion was implemented by the gravity of the waste liquid and the elastic force of the spring, and negative-pressure therapy was carried out by the elastic force and vacuum pump. The SCM regulated the switching of the electromagnetic valve according to the information from the flow meter and pressure sensor so as to perform quantitative wound perfusion, stable negative-pressure therapy and switching between the functions of perfusion and negative-pressure therapy.Results The device volume was decreased by regulating dynamically the sizes of reservoir and waste liquid bags,and the power consumption was also reduced by using liquid gravity and spring force. Conclusion The wound perfusion and negative-pressure therapy device gains advantage over the existing one in portability, and thus is of significance for promoting the technology of wound perfusion and negative-pressure therapy.
ABSTRACT
<p><b>OBJECTIVE</b>To investigate clinical features and treatments of cervical spinal injury in aged patients.</p><p><b>METHODS</b>From July 2006 to October 2011, 27 patients with cervical spinal cord injury were divided into experiment group, including 20 males and 7 females with an average age of 69 years old (ranged 65 to 78 years old). The other 22 patients with the same degree of cervical spianl cord injury and the same period hospitalization were chosen to regard as control group, including 16 males and 6 females with an average age of 47 years old (ranged 38 to 65 years old). All of them had clear history of trauma, and were admitted to hospital within one week. Clinical data and result of follow up were evaluated between two group. The function of the spinal cord was measured by Frankel classification at admission and final follow-up.</p><p><b>RESULTS</b>All patients were followed up for 1 year except 6 died in aged group, among which 3 paients with complications were died during hospitalization and others were out of hospital. Twenty-three cases had accompanied diseases and 24 cases occurred complications in aged group. Contrast to control group, this difference was statistically significant. At the final follow-up, there were 2 cases at Frankel grade E in aged group and 6 cases in control group.</p><p><b>CONCLUSION</b>In comparison with control group, there are more accompany diseases and higher complications and mortality rates in aged group, while poor improvement of spinal cord function. This patients were mainly treated with operation, but operation method should simplify and mainly focus on effective decompression and reconstuction stability and avoid expansion operation. It's nesscerry to pay more attention to prevent and treatment of respiratory complication.</p>
Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Cervical Vertebrae , Wounds and Injuries , Postoperative Complications , Epidemiology , Mortality , Therapeutics , Spinal Injuries , General SurgeryABSTRACT
<p><b>OBJECTIVE</b>To evaluate clinical effects of pedicle fixation without bone fusion in treating thoracolumbar fractures through paraspinal approach.</p><p><b>METHODS</b>From January 2006 to January 2009, 25 patients (15 males and 10 females) with thoracolumbar fractures were treated. The average age was 39.3 years,ranged from 17 to 49 years. According to classification, flexion fracture in 7 cases, brust fracture in 18 cases. There were no nervous injury, and radiology information showed the angle of sagittal vertebral body >20 degrees or collapse of vertebral body >40%,without vertebral injury. The operation were performed at 3 to 7 days after injury (mean 5 day). Internal fixation implants were removed at 8 to 12 months after operation. The height, kyphosis angle were measured before operation, 1 week and 24 months after operation,and Oswestry disability index (ODI) were compared before and after operation.</p><p><b>RESULTS</b>All patients were followed up for 24 months. Among them, 1 case was followed up at 30 months after operation. The operation time ranged from 70 to 110 (mean 90) minutes, the blood loss was 120 to 280 (mean 200) ml. The height of vertebral body and kyphosis angle were obviously corrected, and had significant differences between postoperation immediately and at the final follow-up (P<0.05). There were no differences after remove of internal fixation (P>0.05). The final ODI was (5.36 +/- 1.21)%, had statistical differences compared with preoperation (P<0.05).</p><p><b>CONCLUSION</b>For flexion and burst thoracolumbar fractures without nervous injury, pedicle fixation without bone fusion is a good method,which has advantages of minimally invasive, rapid recovery, and maintain spinal motion segment.</p>