The Experts below are selected from a list of 6630 Experts worldwide ranked by ideXlab platform
John K Park - One of the best experts on this subject based on the ideXlab platform.
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immediate Titanium Mesh cranioplasty for treatment of postcraniotomy infections
World Neurosurgery, 2013Co-Authors: Joshua J Wind, Chima Ohaegbulam, Fabio M Iwamoto, Peter Mcl Black, John K ParkAbstract:Objective Postcraniotomy infections have generally been treated by debridement of infected tissues, disposal of the bone flap, and delayed cranioplasty several months later to repair the resulting skull defect. Debridement followed by retention of the bone flap has also been advocated. Here we propose an alternative operative strategy for the treatment of postcraniotomy infections. Methods Two patients presenting with clinical and radiographic signs and symptoms of postcraniotomy infections were treated by debridement, bone flap disposal, and immediate Titanium Mesh cranioplasty. The patients were subsequently administered antibiotics, and their clinical courses were followed. Results The patients treated in this fashion did not have recurrence of their infections during 3-year follow-up periods. Conclusions Surgical debridement, bone flap disposal, and immediate Titanium Mesh cranioplasty may be a suitable option for the treatment of postcraniotomy infections. This treatment strategy facilitates the eradication of infectious sources and obviates the risks and costs associated with a second surgical procedure.
Yoshinori Mitamura - One of the best experts on this subject based on the ideXlab platform.
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Electrical characteristic of the Titanium Mesh electrode for transcutaneous intrabody communication to monitor implantable artificial organs.
Journal of Artificial Organs, 2016Co-Authors: Eiji Okamoto, Sakiko Kikuchi, Yoshinori MitamuraAbstract:We have developed a tissue-inducing electrode using Titanium Mesh to obtain mechanically and electrically stable contact with the tissue for a new transcutaneous communication system using the human body as a conductive medium. In this study, we investigated the electrical properties of the Titanium Mesh electrode by measuring electrode-tissue interface resistance in vivo. The Titanium Mesh electrode (Hi-Lex Co., Zellez, Hyogo, Japan) consisted of Titanium fibers (diameter of 50 μm), and it has an average pore size of 200 μm and 87 % porosity. The Titanium Mesh electrode has a diameter of 5 mm and thickness of 1.5 mm. Three Titanium Mesh electrodes were implanted separately into the dorsal region of the rat. We measured the electrode-electrode impedance using an LCR meter for 12 weeks, and we calculated the tissue resistivity and electrode-tissue interface resistance. The electrode-tissue interface resistance of the Titanium Mesh electrode decreased slightly until the third POD and then continuously increased to 75 Ω. The electrode-tissue interface resistance of the Titanium Mesh electrode is stable and it has lower electrode-tissue interface resistance than that of a Titanium disk electrode. The extracted Titanium Mesh electrode after 12 weeks implantation was fixed in 10 % buffered formalin solution and stained with hematoxylin-eosin. Light microscopic observation showed that the Titanium Mesh electrode was filled with connective tissue, inflammatory cells and fibroblasts with some capillaries in the pores of the Titanium Mesh. The results indicate that the Titanium Mesh electrode is a promising electrode for the new transcutaneous communication system.
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EMBC - Evaluation of Titanium Mesh electrode using for transcutaneous intrabody communication by tissue-electrode impedance
Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Inte, 2013Co-Authors: Eiji Okamoto, Sakiko Kikuchi, Yoshinori MitamuraAbstract:We developed a new transcutaneous communication system (TCS) that uses the human body as a conductive medium for monitoring and controlling an artificial heart and other implanted artificial organs in the body. The TCS is able to transmit data between everywhere on the surface of the body and everywhere inside the body, however poor contact between tissue and the electrode influences on communication performance. Thus in this study, we have developed a Titanium Mesh electrode for the internal transmission electrode. The Titanium Mesh electrode has advantages of histocompatibility and mechanical stable contact to the tissue by infiltration of the tissue into the Titanium Mesh like as an extracellular matrix. There Titanium Mesh electrodes were implanted separately into the dorsal region of the rats under the skin and the electrical performance of the Titanium Mesh electrode was evaluated by means of measuring the electrode-tissue boundary resistance. In vivo experimental results showed that the Titanium Mesh electrode had stable mechanical contact to tissue and lower electrode -tissue boundary resistance. In conclusion, the Titanium Mesh electrode showed excellent histocompatibility it realized stable contact to tissue as anchor, and it had superior electrical property. Thus the Titanium Mesh electrode is suitable for an internal electrode of the TCS to monitor artificial organs implanted into the body.
Bin Cai - One of the best experts on this subject based on the ideXlab platform.
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Design, biomechanical study, and clinical application of a new pterygo-shaped Titanium Mesh cage
European Journal of Orthopaedic Surgery and Traumatology, 2011Co-Authors: Lu-shan Wang, Xiang-jiang Wang, Wen-jun Wang, Yi-guo Yan, Nuzhao Yao, Xiang-dong Wang, Yi-ping Zhu, Bin CaiAbstract:Objective In recent years, Cage/SyCages or Titanium Mesh cages with interbody fusion have become a common surgical treatment for patients with cervical spondylosis and traumatic lesions. However, numerous complications have been reported, including hardware failure or breakage, which necessitate reoperation, and complications at the bone graft site. To improve upon the existing traditional Titanium Mesh cage, we designed a new pterygo-shaped Titanium Mesh cage (PTMC).
Zhiyong Zhang - One of the best experts on this subject based on the ideXlab platform.
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Surgical Resection of Sternal Tumors and Reconstruction with Titanium Mesh
Chinese Medical Sciences Journal, 2011Co-Authors: Hongsheng Liu, Yingzhi Qin, Yushang Cui, Zhiyong ZhangAbstract:Objective To evaluate the use of Titanium Mesh reconstruction after sternal tumor resection. Methods From January 2007 to January 2011, 14 patients with sternal tumors were admitted into Peking Union Medical Hospital. The clinical characteristics, surgical resection, and technique of reconstruction were reviewed. Results Of the 14 patients, 3 had a metastatic sternal tumor, the primary sites of which were as follows: hepatic carcinoma in one case (metastasis 19 years after operation), breast carcinoma in another case (metastasis 5 years after operation), and renal carcinoma in the other case (found simultaneously). Two patients showed local involvement of the sternum: 1 had thymic carcinoma, and the other had myofibrosarcoma. The remaining 9 patients had primary tumors: 4 were osteochondroma, 3 chondrosarcoma, 1 eosinophilic granuloma, 1 non-Hodgekin's lymphoma. En bloc resection of the sternal tumor was performed in all the 14 patients. The defect was repaired with the Titanium Mesh adjusted to the shape of the defect and fixed with the stainless steel wire. Eleven patients were followed up for a period from 2 months to 4 years, during which no translocation or broken of the Titanium Mesh was observed. Conclusions Radical en bloc excision remains the treatment of choice for sternal tumors. Sternum defect reconstruction using Titanium Mesh as a rigid replacement proves appropriate and effective.
George H Yoo - One of the best experts on this subject based on the ideXlab platform.
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Titanium Mesh repair of the severely comminuted frontal sinus fracture
Archives of Otolaryngology-head & Neck Surgery, 2001Co-Authors: Raam S Lakhani, Terry Y Shibuya, Robert H Mathog, Steven C Marks, Don L Burgio, George H YooAbstract:Background Severely comminuted frontal sinus fractures are difficult to contour and immobilize. Frequently, plates or wires are inadequate in fixating all fragments together, resulting in less than optimal outcomes. Advancements in the development of biomaterials have now made Titanium Mesh a new option for the repair of severely comminuted fractures. Methods Fourteen patients with severely comminuted frontal sinus fractures were treated with Titanium Mesh from 1994 to 1999. The fractures were reduced and immobilized using a simple algorithm: (1) Isolated anterior table fractures were repaired with reduced bony fragments attached to Titanium Mesh. (2) Anterior table fractures with nasofrontal duct involvement were repaired by sinus obliteration and anterior wall reconstruction with reduced bony fragments attached to Titanium Mesh. (3) Anterior and posterior table fractures with cerebrospinal fluid leak or displacement were treated with the cranialization of the sinus and anterior wall reconstruction with reduced bony fragments attached to Titanium Mesh. Results Of the 14 patients treated, 12 were available for postoperative evaluation. Parameters such as nasal function, cranial nerve V and VII function, cosmesis, and complications (hardware extrusions, sinusitis, meningitis, osteomyelitis, mucopyocele, brain abscess, pneumocephalus, and cerebrospinal fluid leak) were evaluated. All patients had good function of the superior division of cranial nerves V and VII. Two patients (16%) had minor wound infections, which resolved under treatment with antibiotics. All had excellent cosmetic results as measured by postreduction radiographs and personal and family perceptions of forehead contour. Conclusion Titanium Mesh reconstruction of severely comminuted frontal sinus fractures has few complications while providing excellent forehead contour and cosmesis.
