A Miniature Triaxial Fiber Optic Force Sensor for Flexible Ureteroscopy

Deng, Yongxin; Yang, Tao; Dai, Shaotao; Song, Guoli

doi:10.1109/tbme.2020.3034336

Cited by 24 publications

(21 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…al. who used a safety factor of 3 [ 20 ]. The design requirements for the proposed micro-force sensor are summarized in Table 1 .…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, evaluation of localized tissue properties will be essential for disease prevention and/or detection. Being able to monitor the applied force and acquire reaction force information could result in improved diagnostics [ 3 , 6 , 20 ]. Therefore, there has been interest in the development of micro-force sensors that could be attached at the end of diagnostic instruments to interact with the tissue.…”

Section: Introductionmentioning

confidence: 99%

“…A micro-force sensor with diameter less than 3 m m and a total length of 15 m m capable of sensing an axial load in the range 0−4 N with a resolution of 14 m N was reported by Deng et. al [ 20 ]. Conventional manufacturing processes including laser machining were used for prototyping a Nitinol alloy based force sensor and for prototyping subsequent design revisions aiming to simplify their sensor design.…”

Section: Introductionmentioning

confidence: 99%

“…al. were based upon the working principle of fiber optics [ 20 – 22 ]. Fiber brag grating (FBG) sensing technology can be used as a strain measurement sensor by measuring the change in period of the wavelength of emitted light source.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Design, inverted vat photopolymerization 3D printing, and initial characterization of a miniature force sensor for localized in vivo tissue measurements

Kumat

Shiakolas

2022

3D Print Med

View full text Add to dashboard Cite

Background Tissue healthiness could be assessed by evaluating its viscoelastic properties through localized contact reaction force measurements to obtain quantitative time history information. To evaluate these properties for hard to reach and confined areas of the human body, miniature force sensors with size constraints and appropriate load capabilities are needed. This research article reports on the design, fabrication, integration, characterization, and in vivo experimentation of a uniaxial miniature force sensor on a human forearm. Methods The strain gauge based sensor components were designed to meet dimensional constraints (diameter ≤3.5mm), safety factor (≥3) and performance specifications (maximum applied load, resolution, sensitivity, and accuracy). The sensing element was fabricated using traditional machining. Inverted vat photopolymerization technology was used to prototype complex components on a Form3 printer; micro-component orientation for fabrication challenges were overcome through experimentation. The sensor performance was characterized using dead weights and a LabVIEW based custom developed data acquisition system. The operational performance was evaluated by in vivo measurements on a human forearm; the relaxation data were used to calculate the Voigt model viscoelastic coefficient. Results The three dimensional (3D) printed components exhibited good dimensional accuracy (maximum deviation of 183μm). The assembled sensor exhibited linear behavior (regression coefficient of R2=0.999) and met desired performance specifications of 3.4 safety factor, 1.2N load capacity, 18mN resolution, and 3.13% accuracy. The in vivo experimentally obtained relaxation data were analyzed using the Voigt model yielding a viscoelastic coefficient τ=12.38sec and a curve-fit regression coefficient of R2=0.992. Conclusions This research presented the successful design, use of 3D printing for component fabrication, integration, characterization, and analysis of initial in vivo collected measurements with excellent performance for a miniature force sensor for the assessment of tissue viscoelastic properties. Through this research certain limitations were identified, however the initial sensor performance was promising and encouraging to continue the work to improve the sensor. This micro-force sensor could be used to obtain tissue quantitative data to assess tissue healthiness for medical care over extended time periods.

show abstract

“…al. who used a safety factor of 3 [ 20 ]. The design requirements for the proposed micro-force sensor are summarized in Table 1 .…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design, inverted vat photopolymerization 3D printing, and initial characterization of a miniature force sensor for localized in vivo tissue measurements

Kumat

Shiakolas

2022

3D Print Med

View full text Add to dashboard Cite

show abstract

“…Rothmaier et al presented a textile integration of this pressure sensor [25], but none of the aforementioned methods were fully compatible with textile technology nor did they provide simultaneous sensing at different locations. The use of soft or elastomeric materials for POF sensing in general [26][27][28] and for this type of pressure sensing via POF [24] has shown promise and is therefore also addressed in the paper. Apart from these aspects, the authors investigated in [24] the coupling effect between the crossing fibres in more detail, studying the influence of different materials and mechanical properties of the fibre.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Fibre Cross-Coupling Mechanisms in Fibre-Optical Force Sensors

Bunge

Kallweit

Colakoglu

et al. 2021

Sensors

View full text Add to dashboard Cite

The force-enhanced light coupling between two optical fibres is investigated for the application in a pressure or force sensor, which can be arranged into arrays and integrated into textile surfaces. The optical coupling mechanisms such as the influence of the applied force, the losses at the coupling point and the angular alignment of the two fibres are studied experimentally and numerically. The results reveal that most of the losses occur at the deformation of the pump fibre. Only a small percentage of the cross-coupled light from the pump fibre is actually captured by the probe fibre. Thus, the coupling and therefore the sensor signal can be strongly increased by a proper crossing angle between the fibres, which lead to a coupling efficiency of 3%, a sensitivity improvement of more than 20 dB compared to the orthogonal alignment of the two fibres.

show abstract

A Micro‐3‐Degree‐of‐Freedom Force Sensor for Intraocular Dexterous Surgical Robots

Zhang

Wang

Bai

et al. 2023

Advanced Intelligent Systems

View full text Add to dashboard Cite

The continuum manipulator improves the intraocular robot flexibility during retinal surgery. Herein, a micro‐3‐degree of freedom (DOF) force sensor with a length of only 3.8 mm that can adjust the puncture angle during retinal vein cannulation (RVC) is proposed. Taking advantage of 3D printing technology, the optical fiber and injection line are embedded in the nitinol tube with flexible hinges to achieve integration of the force sensing and injection functions. A new fiber Bragg grating (FBG) configuration method and linear decoupling algorithm are also proposed herein. Static calibration experiments demonstrate excellent resolution of the force sensor, of less than 0.072 mN for transverse force and 0.738 mN for the axial force in the range from −20 to 20 mN. The proposed sensor is installed on a newly developed actuator, and an ex vivo experiment is performed on pig cadaver eyes. The interaction forces at each stage of the RVC are recorded in detail for the first time, further confirming the feasibility and effectiveness of the developed sensor for monitoring the RVC interaction forces.

show abstract

A Miniature Triaxial Fiber Optic Force Sensor for Flexible Ureteroscopy

Cited by 24 publications

References 23 publications

Design, inverted vat photopolymerization 3D printing, and initial characterization of a miniature force sensor for localized in vivo tissue measurements

Design, inverted vat photopolymerization 3D printing, and initial characterization of a miniature force sensor for localized in vivo tissue measurements

Analysis of Fibre Cross-Coupling Mechanisms in Fibre-Optical Force Sensors

A Micro‐3‐Degree‐of‐Freedom Force Sensor for Intraocular Dexterous Surgical Robots

Contact Info

Product

Resources

About