Natural orifice translumenal endoscopic surgery (NOTES) has offered significant advantages of less pain, reduced recovery time, and minimized scar after operation, demonstrating a promising development prospect. However, the large-size specimen extraction remains challenging for NOTES, due to the narrow space of the human natural orifices. To address such difficulties, a specimen extraction method that utilizes the braided fiber tube (BFT) structure with excellent retractility to accommodate and bind the bulky specimen has been proposed. Based on the theory of helical spring, the geometric model and the mechanical model of the BFT are established, and experiments have been performed to verify the accuracy of the derived mechanical model. In addition, a tensile test of using the BFT to extract large specimens via a small channel is carried out, which verifies the stable extraction performance of the proposed design. The BFT will not be damaged when extracting the specimen with a diameter less than 1.75 times of the channel diameter. A NOTES-specific specimen extraction instrument is designed according to the characteristics of NOTES, and it has three degrees-of-freedom and is able to actively capture different specimen by using a suction cup. Finally, specimen extraction experiments on NOTES multitasking platform phantom have been conducted using the prototyped instrument to validate its feasibility and effectiveness.
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September 2018
Research-Article
A Specimen Extraction Instrument Based on Braided Fiber Tube for Natural Orifice Translumenal Endoscopic Surgery
Jinhua Li,
Jinhua Li
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: lijinhua@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: lijinhua@tju.edu.cn
Search for other works by this author on:
Zemin Zhang,
Zemin Zhang
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: zmzhang0526@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: zmzhang0526@tju.edu.cn
Search for other works by this author on:
Shuxin Wang,
Shuxin Wang
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University, Tianjin 300072, China
e-mail: shuxinw@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University, Tianjin 300072, China
e-mail: shuxinw@tju.edu.cn
Search for other works by this author on:
Zufeng Shang,
Zufeng Shang
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: szf_rai@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: szf_rai@tju.edu.cn
Search for other works by this author on:
Guokai Zhang
Guokai Zhang
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University, Tianjin 300072, China
e-mail: zhang_gk@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University, Tianjin 300072, China
e-mail: zhang_gk@tju.edu.cn
Search for other works by this author on:
Jinhua Li
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: lijinhua@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: lijinhua@tju.edu.cn
Zemin Zhang
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: zmzhang0526@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: zmzhang0526@tju.edu.cn
Shuxin Wang
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University, Tianjin 300072, China
e-mail: shuxinw@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University, Tianjin 300072, China
e-mail: shuxinw@tju.edu.cn
Zufeng Shang
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: szf_rai@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University,
Tianjin 300072, China
e-mail: szf_rai@tju.edu.cn
Guokai Zhang
Key Laboratory for Mechanism Theory and
Equipment Design of Ministry of Education,
Tianjin University, Tianjin 300072, China
e-mail: zhang_gk@tju.edu.cn
Equipment Design of Ministry of Education,
Tianjin University, Tianjin 300072, China
e-mail: zhang_gk@tju.edu.cn
1Corresponding author.
Manuscript received January 26, 2018; final manuscript received June 17, 2018; published online July 24, 2018. Assoc. Editor: Venketesh Dubey.
J. Med. Devices. Sep 2018, 12(3): 031008 (8 pages)
Published Online: July 24, 2018
Article history
Received:
January 26, 2018
Revised:
June 17, 2018
Citation
Li, J., Zhang, Z., Wang, S., Shang, Z., and Zhang, G. (July 24, 2018). "A Specimen Extraction Instrument Based on Braided Fiber Tube for Natural Orifice Translumenal Endoscopic Surgery." ASME. J. Med. Devices. September 2018; 12(3): 031008. https://doi.org/10.1115/1.4040638
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