Towards the development of a MEMS-based force sensor for in vivo tumor tissue demarcation

Malhotra, Nidhi; Hoang, Kevin; Desai, Jaydev P.

doi:10.1109/ismr57123.2023.10130220

Cited by 4 publications

(1 citation statement)

References 19 publications

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“…Wang et al [ 27 ] designed a high-quality tactile matrix sensor array based on the field-effect transistor principle, aiming to achieve a highly integrated, scalable, and multifunctional FET tactile sensor with small size and high sensitivity. Similarly, a MEMS-based force sensor [ 28 ] was integrated into a manipulable robotic probe for precise detection of tumor tissue edges during excision procedures. However, this type of sensor faces challenges in mitigating temperature effects on sensors and lacks the ability to capture visual information due to the absence of optical transparency.…”

Section: Introductionmentioning

confidence: 99%

Transparent Pneumatic Tactile Sensors for Soft Biomedical Robotics

Zhao

Nguyễn

Hoang

et al. 2023

Sensors

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Palpation is a simple but effective method to distinguish tumors from healthy tissues. The development of miniaturized tactile sensors embedded on endoscopic or robotic devices is key to achieving precise palpation diagnosis and subsequent timely treatment. This paper reports on the fabrication and characterization of a novel tactile sensor with mechanical flexibility and optical transparency that can be easily mounted on soft surgical endoscopes and robotics. By utilizing the pneumatic sensing mechanism, the sensor offers a high sensitivity of 1.25 mbar and negligible hysteresis, enabling the detection of phantom tissues with different stiffnesses ranging from 0 to 2.5 MPa. Our configuration, combining pneumatic sensing and hydraulic actuating, also eliminates electrical wiring from the functional elements located at the robot end-effector, thereby enhancing the system safety. The optical transparency path in the sensors together with its mechanical sensing capability open interesting possibilities in the early detection of solid tumor as well as in the development of all-in-one soft surgical robots that can perform visual/mechanical feedback and optical therapy.

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Section: Introductionmentioning

confidence: 99%

Transparent Pneumatic Tactile Sensors for Soft Biomedical Robotics

Zhao

Nguyễn

Hoang

et al. 2023

Sensors

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show abstract

Design, fabrication, and packaging of a piezoresistive MEMS-based force sensor on a steerable probe: Towards brain tumor margin identification

Malhotra,

Hoang,

Desai

2024

Sensors and Actuators A: Physical

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Transparent Pneumatic Tactile Sensors for Soft Biomedical Robotics

Zhao¹,

Nguyễn²,

Hoang³

et al. 2023

Preprint

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Palpation is a simple but effective method to differentiate tumors from healthy tissues. Development of miniaturized tactile sensors embedded on endoscopic or robotic devices are the key toward precise palpation diagnosis and the subsequent timely treatment. This paper reports on the fabrication and characterization of a novel tactile sensor with mechanical flexibility and optical transparency that can be easily mounted on soft surgical endoscopes and robotics. Utilizing the pneumatic sensing mechanism, the sensor offers a high sensitivity of 1.25 mbar and negligible hysteresis, enabling the detection of phantom tissues with different stiffnesses ranging from 0 to 2.5 MPa. Our configuration combining pneumatic sensing and hydraulic actuating also eliminates electrical wiring from the functional elements located at the robot end-effector, thereby enhancing the system safety. The optical transparency path in the sensors together with its mechanical sensing capability open interesting possibility in early detection of solid tumor as well as in the development of all in-one soft surgical robots that can perform visual/mechanical feedback and optical therapy.

show abstract

Towards the development of a MEMS-based force sensor for in vivo tumor tissue demarcation

Cited by 4 publications

References 19 publications

Transparent Pneumatic Tactile Sensors for Soft Biomedical Robotics

Transparent Pneumatic Tactile Sensors for Soft Biomedical Robotics

Design, fabrication, and packaging of a piezoresistive MEMS-based force sensor on a steerable probe: Towards brain tumor margin identification

Transparent Pneumatic Tactile Sensors for Soft Biomedical Robotics

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