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Related Concept Videos

Assessment of the Abdomen III: Palpation01:23

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Palpation is a crucial tactile examination method for assessing abdominal organs and detecting conditions like tenderness, distention, masses, or fluid. It involves both light and deep palpation techniques, each serving specific diagnostic purposes. Light palpation helps identify tenderness and other surface-level indicators, while deep palpation locates and assess abdominal masses and organ boundaries. A skilled professional can gather valuable insights through palpation, including evaluating...
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Percussion is a fundamental technique used to assess the liver, spleen, and abdominal organs by tapping the abdomen and interpreting the resulting sounds. This method helps identify fluid, distention, and masses through variations in sound, such as the high-pitched tympany of air-filled areas and the dullness of solid masses. Understanding how to percuss these organs provides valuable information for healthcare professionals in diagnosing conditions early.
Percussion
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Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
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Related Experiment Video

Updated: May 3, 2026

Rod-based Fabrication of Customizable Soft Robotic Pneumatic Gripper Devices for Delicate Tissue Manipulation
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Design and Validation of a Grasping Force Measuring Vibrotactile Feedback Add-On for Laparoscopic Instruments.

Jan-Willem Klok1, Yannick Smits2, Roelf Postema3

  • 1Department of BioMechanical EngineeringDelft University of Technology Delft 2628 CD The Netherlands.

IEEE Journal of Translational Engineering in Health and Medicine
|January 8, 2026
PubMed
Summary

A new grasping force feedback system for laparoscopic surgery, the ShaftFlex, helps surgeons improve tissue handling. Novices trained with this feedback system maintained controlled grasping forces, reducing trauma risk.

Keywords:
Compliant mechanismsgraspinghaptic feedbacklaparoscopic surgerypostoperative complication prevention.

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Area of Science:

  • Minimally Invasive Surgery
  • Surgical Technology
  • Medical Devices

Background:

  • Laparoscopic surgery lacks tactile feedback, increasing tissue trauma risk due to uncontrolled grasping forces.
  • Instrument limitations like backlash and friction hinder accurate force perception.
  • Objective skill assessment in surgical training is challenging.

Purpose of the Study:

  • To develop and validate a grasping force feedback add-on for laparoscopic graspers.
  • To assess the impact of this feedback system on laparoscopic skills acquisition.
  • To enhance safety and reduce tissue trauma in laparoscopic procedures.

Main Methods:

  • The ShaftFlex system, utilizing a compliant element and Hall sensor, was designed as an add-on.
  • Novice surgeons were divided into feedback and no-feedback groups for a box trainer task.
  • Grasping force, completion time, and errors were measured during training and post-training assessments.

Main Results:

  • Significant differences in mean grasping force were observed between groups across all trials.
  • The feedback group maintained consistent grasping force even after feedback removal.
  • The system demonstrated feasibility in measuring and providing immediate haptic feedback.

Conclusions:

  • The ShaftFlex system offers a viable method for measuring and providing haptic feedback on grasping forces.
  • It shows potential for objective skill assessment and improved surgical training.
  • This technology could be beneficial in surgeries involving delicate tissue manipulation.