Modelling and quality control of robot-assisted gastrointestinal assembly

Wang, Shuxin; Wang, Jianchen; Li, Jianmin

doi:10.1016/j.cirp.2015.04.050

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…The average of these measurements was considered as the thickness of the sample., which was 0.10 mm, and the model length, width, and height dimensions were 15 mm × 15 mm × 0.10 mm. The soft tissues were simplified into a single-layer material structure [20], and the geometric model dimensions were 15 mm × 10 mm × δ, and the constructed model is shown in Figure 3.…”

Section: Geometric Modellingmentioning

confidence: 99%

Simulation and Experimental Study of Staple Line Reinforcement Surgery

Hu,

Zhang

2024

JBiSE

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The aim of this study was to evaluate the effectiveness of BM (basement membrane) and SIS (small intestine submucosa) composite extracellular matrix staple line reinforcement in surgical procedures through finite element modelling simulations and leak-proof performance experiments. The mechanical analyses of soft tissues with and without staple line reinforcement were performed by establishing finite element models of three tissues, namely, stomach, intestine and lungs, under the use scenarios of different anastomosis staple models; and the leak-proof performance of the staple line reinforcement was evaluated by simulating leak-proof experiments of gastric incision margins, intestinal sections, and lung incision margins in vitro. The results showed that the equivalent average stresses of the staple line reinforcement were increased by 20 kPa -68 kPa in gastric and intestinal tissues, and 8 kPa -22 kPa in lung tissues. and that the BM and SIS composite extracellular matrix staple line reinforcement could strengthen the anastomotic structure, and at the same time disperse the high stresses of the anastomosed tissues, which could effectively reduce the postoperative complications such as anastomotic bleeding and anastomotic leakage, and provide a safer and more effective optimized design for surgical mechanical anastomosis. It can effectively reduce postoperative complications such as anastomotic bleeding and anastomotic leakage, and provide a safer and more effective optimized design for surgical mechanical anastomosis.

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Section: Geometric Modellingmentioning

confidence: 99%

Simulation and Experimental Study of Staple Line Reinforcement Surgery

Hu,

Zhang

2024

JBiSE

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“…Previous studies indicated that the conventional ultrasonic scalpels typically generate a temperature below 80~100℃ while cutting, which is not capable of sealing the vessels with a large diameter of more than 3mm [12][13][14]. To avoid the rupture of large blood vessels and the possibly serious surgical risks, instead of the energybased hemostatic instruments, vascular closure devices [15], titanium nip [5], and staplers [16] are often selected as hemostatic tools. Nevertheless, these methods will leave foreign substances in the human body and the frequent replacement of surgical instruments will extend the operation time and lead to increased risks of surgical complications.…”

Section: Introductionmentioning

confidence: 99%

An Enhanced Hemostatic Ultrasonic Scalpel Based on the Longitudinal-Torsional Vibration Mode

Dong

Zhang

et al. 2021

IEEE Access

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This paper proposes an ultrasonic scalpel based on the longitudinal-torsional vibration mode to enhance the hemostatic ability. The concentrator of the proposed ultrasonic scalpel has been specially designed with spiral grooves to realize this vibration mode. The change of the working mode has enlarged the vertical motion component of the distal blade to efficiently radiant energy into the dissected tissues, supporting that the blood vessel can receive sufficient energy to be sealed. The electromechanical equivalent method has been employed in the initial design of the scalpel to obtain the desired resonance frequency. The structural optimization based on the finite element method (FEM) has been conducted to further improve the proposed design, as well as investigation of its dynamic performances. Both the conventional and presented ultrasonic scalpel prototypes were fabricated, and their important parameters such as, mechanical quality factor and resonance frequency, were tested and compared using an impedance analyzer. The ex-vivo experiments have been conducted to measure the vertical temperature distribution to investigate their transferring heat effects. The corresponding results indicated that the internal temperature values of tissues cut with the proposed hemostatic-enhanced ultrasonic scalpel are 24.0% higher on the 3mm layer, 16.5% higher on the 6mm layer, and 8.5% higher on the 9mm layer, respectively. The sealing capacity of the ultrasonic scalpels has been investigated through the coagulation dissection experiment on the chicken carotid and their burst pressure tests. The average burst pressure of the sealed vessels by the hemostatic-enhanced ultrasonic scalpel can achieve higher values than that of the conventional ultrasonic scalpel.

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Modelling and quality control of robot-assisted gastrointestinal assembly

Cited by 2 publications

References 15 publications

Simulation and Experimental Study of Staple Line Reinforcement Surgery

Simulation and Experimental Study of Staple Line Reinforcement Surgery

An Enhanced Hemostatic Ultrasonic Scalpel Based on the Longitudinal-Torsional Vibration Mode

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