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Surgical Endoscopy
Published in: Surgical Endoscopy 1/2010

01-01-2010

Usefulness in NOTES of an intra-abdominal antifogging wireless charge-coupled device (CCD) camera with pantograph-type needle unit for placement to the intra-abdominal wall

Authors: Takeshi Ohdaira, Kazuhiro Endo, Nozomi Abe, Yoshikazu Yasuda

Published in: Surgical Endoscopy | Issue 1/2010

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Abstract

Background

In natural orifice transluminal endoscopic surgery (NOTES), the endoscope has the disadvantages of an unstable visual field and wide blind space. We developed a compact charge-coupled device (CCD) camera unit that can be transgastrointestinally placed in the abdominal cavity.

Methods

The requisites for a wireless CCD camera unit for use in NOTES have been cited as: monitoring performance, fixation to the abdominal wall, attitude control, and antifogging functionality. Models to meet these requisites were prepared to assess their performance. The monitor had a CCD with dimensions of 7 × 7 × 7 mm and resolution of 410,000 pixels. The unit had a structure that allowed its attachment to the endoscope apex when placed to the abdominal wall. The abdominal wall fixation unit was equipped with a pantograph-type needle structure that was easily activated and retained by changing the polarity of an electromagnetic force. The pantograph-type needle head was designed to rotate by 360° as an attitude-control mechanism, and both the pantograph and attitude-control mechanisms enabled attitude control in horizontal and vertical directions by a magnetic force applied from outside the body. Fogging was prevented by a vibration mechanism that physically cleaned the CCD lens surface and by titanium dioxide coating of the lens surface.

Results

The CCD camera unit was confirmed to have sufficient performance as an auxiliary monitor for endoscopy in terms of visual field and resolution. The pantograph-type needle structure successfully completed fixation of the CCD camera unit to the abdominal wall. Unit attitude was easily controlled, and fogging could be addressed by water supply before insertion of the CCD camera unit into the peritoneal cavity.

Conclusions

The wireless CCD camera unit was verified to function as an effective second eye in NOTES by using the described mechanisms and antifogging coating.
Literature
1.
Meining A, Wilhelm D, Burian M, Dundoulakis M, Schneider A, von Delius S, Feussner H (2007) Development, standardization, and evaluation of NOTES cholecystectomy using a transsigmoid approach in the porcine model: an acute feasibility study. Endoscopy 39(10):860–864CrossRefPubMed
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Mintz Y, Horgan S, Savu MK, Cullen J, Chock A, Ramamoorthy S, Easter DW, Talamini MA (2008) Hybrid natural orifice translumenal surgery (NOTES) sleeve gastrectomy: a feasibility study using an animal model. Surg Endosc 22(8):1798–1802CrossRefPubMed
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Leroy J, Cahill RA, Perretta S, Forgione A, Dallemagne B, Marescaux J (2009) Natural orifice translumenal endoscopic surgery (NOTES) applied totally to sigmoidectomy: an original technique with survival in a porcine model. Surg Endosc 23(1):24–30CrossRefPubMed
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Isariyawongse JP, McGee MF, Rosen MJ, Cherullo EE, Ponsky LEJ (2008) Pure natural orifice transluminal endoscopic surgery (NOTES) nephrectomy using standard laparoscopic instruments in the porcine model. J Endourol 22(5):1087–1091CrossRefPubMed
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Raman JD, Bergs RA, Fernandez R, Bagrodia A, Scott DJ, Tang SJ, Pearle MS, Cadeddu JA (2009) Complete transvaginal NOTES nephrectomy using magnetically anchored instrumentation. J Endourol, Feb 4
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Ohdaira T, Nagai H, Sunada K, Hashimoto K (2007) Antifogging effects of a socket-type device with the superhydrophilic, titanium dioxide-coated glass for the laparoscope. Surg Endosc 21(2):333–338CrossRefPubMed
Metadata
Title
Usefulness in NOTES of an intra-abdominal antifogging wireless charge-coupled device (CCD) camera with pantograph-type needle unit for placement to the intra-abdominal wall
Authors
Takeshi Ohdaira
Kazuhiro Endo
Nozomi Abe
Yoshikazu Yasuda
Publication date
01-01-2010
Publisher
Springer-Verlag
Published in
Surgical Endoscopy / Issue 1/2010
Print ISSN: 0930-2794
Electronic ISSN: 1432-2218
DOI
https://doi.org/10.1007/s00464-009-0554-8

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