Underwater 3D Imaging Using a Fiber-Based Endoscopic System for Arthroscopic Surgery

Author(s):  
Zhongjie Long ◽  
◽  
Kouki Nagamune ◽  
◽  

Arthroscopic surgery is a minimally invasive surgical procedure that is widely used on joints. However, conventional endoscope-based arthroscopic surgery does not provide stereoscopic information to the surgeon. To overcome this limitation, we have developed a modified endoscopic system that uses an optical fiber (1 mm diameter) for three-dimensional imaging of knee joints. Our endoscopic system is able to operate underwater in real time. It consists of a laser beam that is projected on the surface of the object to be imaged via an optical fiber. A prism is used to decrease the length and diameter of baseline and endoscope tube, respectively. The small diameter (8 mm) of our endoscope makes it extremely convenient for application in arthroscopic surgery. The feasibility of the proposed system has been demonstrated via experiments on synthetic knee joints.

2021 ◽  

Anterior basal (S8) segmentectomy is one of the most challenging procedures among the uncommon pulmonary segmentectomies because the surgeon has to identify dominant pulmonary vein branches located deep in the lung parenchyma. Moreover, with the uniportal thoracoscopic approach, the angulation of inserted surgical instruments via a single small incision is extremely limited, which causes technical difficulties. However, adoption of a suitable procedure such as unidirectional dissection enables us to perform this type of minimally invasive surgical procedure. We describe the successful results of a patient undergoing uniportal thoracoscopic S8 segmentectomy of the right lower lobe and explain the nuances of performing it.


2002 ◽  
Vol 8 (5) ◽  
pp. 329-334 ◽  
Author(s):  
L. Raymond Reynolds, MD, FACP ◽  
Adrian E. Park, MD ◽  
Ralph E. Miller, MD ◽  
Dennis G. Karounos, MD

2019 ◽  
Vol 2019 ◽  
pp. 1-6
Author(s):  
M. Prod’homme ◽  
G. Cavalié ◽  
G. Kerschbaumer ◽  
S. Valmary-Degano ◽  
M. Boudissa ◽  
...  

We hereby describe a minimally invasive resection of a T1 pedicular osteoid osteoma next to the vertebral canal. The patient had an 18-month report of painful radiculopathy. We performed the surgery under 3D imaging guidance using navigation with an all-in-one device. Full procedure irradiation was 1.17 mSv for a 181-picture acquisition. Complete operative time incision to closure was 58 minutes. Despite sparing the vertebral stability without any fixation, the tumor resection was well-margined, thanks to the focused guidance. After surgery, the patient had complete relief of his symptoms at the 6-month follow-up. 3D imaging system coupled to navigation made the procedure safe without consuming time. The single Surgivisio® device allows comfortable 3D minimally invasive spine navigation surgery with the ergonomics of a C-arm.


2013 ◽  
Vol 10 (2-3) ◽  
pp. 125-133 ◽  
Author(s):  
M. Akif Kutuk ◽  
Ibrahim Gov

Application of topology optimization to fixation plates is the main consideration of this paper. The interbody fusion plates are required to give mechanical support to tibia with minimally invasive surgical procedure. Topology optimization is used to obtain fixation plates with possible minimum material usage. Topology optimization is applied to three types of plates which are used in upper tibial osteotomy. Initial design of the plates are first numerically modelled and then investigated for stresses under possible highest load values. The results of the analysis indicated that the plates are very stiff even under high loads. Application of topology optimization to plates yielded minimized weight and material usage while keeping the plates still adequate for possible high load values. It was also revealed that up to 50% of mass could be saved by an optimal implant design.


Author(s):  
Jungwon Lee ◽  
Jin-Uk Choi ◽  
Jun-Beom Lee ◽  
In-Chul Rhyu DDS ◽  
Yong-Moo Lee

This case report describes the treatment of peri-implantitis lesions through a minimally invasive surgical procedure using a peri-implant excisional procedure and access surgery (PEAS). The prosthesis was disconnected and the peri-implant granulation tissue removed following a peri-implant circular incision. Chemical debridement with hydrogen peroxide on a cotton ball and then mechanical debridement with a rotary round titanium brush and tufted brush with titanium bristles were conducted. The surgical intervention was effective in arresting the peri-implantitis. No further radiographic bone loss was observed over the 2-year follow-up period. This technique effectively cleans the contaminated implant surface, minimizes surgical morbidity and allows for prosthesis delivery on the day of surgery. However, further studies with a larger sample size are needed to identify the reliability and validity of this novel technique.


2017 ◽  
Vol 21 (3) ◽  
pp. 508-515 ◽  
Author(s):  
Yoshiaki Shoji ◽  
Hiroya Takeuchi ◽  
Osamu Goto ◽  
Kazunori Tokizawa ◽  
Rieko Nakamura ◽  
...  

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