Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Problem-Solving: Tuning of a Guitar String

Problem-Solving: Tuning of a Guitar String

In the case of stringed instruments like the guitar, the elastic property that determines the speed of the sound produced is its linear mass density or the mass per unit length. This is simply called the linear density. If the string's linear density is constant along the string, then the linear density is simply the total mass divided by the total length.
The string's wave speed can be regulated by varying the linear density. Tension is the other property that determines the speed of...

Instrumentation Amplifier

Instrumentation Amplifier

An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...

Design Example: Strain Gauge Bridge or Wheatstone Bridge

Design Example: Strain Gauge Bridge or Wheatstone Bridge

The utilization of strain gauges as transducers for converting mechanical strain into electrical signals is a common practice in various engineering applications. These strain gauges are frequently integrated into Wheatstone bridge circuits to accurately measure parameters such as force or pressure. Within this context, each element within the circuit exhibits a resistance that undergoes subtle variations when subjected to mechanical strain. The primary objective is to convert minuscule...

Torsional Pendulum

Torsional Pendulum

A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected.
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played by the...

Instrument Transformers

Instrument Transformers

Instrument transformers, comprising voltage transformers (VTs) and current transformers (CTs), play crucial roles in power substations by providing isolated replicas of current or voltage for measurement and protection purposes. Voltage transformers reduce the primary voltage to levels suitable for relay operation and measurement, while current transformers scale down the primary current. The primary winding of a current transformer often consists of a single turn, achieved by threading the...

Simple Pendulum

Simple Pendulum

A simple pendulum consists of a small diameter ball suspended from a string, which has negligible mass but is strong enough to not stretch. In our daily life, pendulums have many uses, such as in clocks, on a swing set, and on a sinker on a fishing line.
The period of a simple pendulum depends on two factors: its length and the acceleration due to gravity. The period is completely independent of any other factors, such as mass or maximum displacement. For small displacements, a pendulum is...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Life-expectancy loss during the COVID-19 pandemic: decomposition using individual-level mortality data.

American journal of epidemiology·2026

Same author

Evaluating the Role of Erythrocyte-Related Markers in Predicting Adenosine Response in Supraventricular Tachycardia.

The Annals of pharmacotherapy·2026

Same author

Violence Against Emergency Department Health Care Workers and the Effect of Wisconsin Act 209.

WMJ : official publication of the State Medical Society of Wisconsin·2026

Same author

COVID-19 Vaccine Effectiveness Against Mortality in the Omicron Period: Evidence from Linked Mortality and Vaccination Records.

Vaccines·2025

Same author

Accessibility of Urgent Care Centers: A Socioeconomic and Geospatial Evaluation.

The western journal of emergency medicine·2025

Same author

Impact of Proximity and Accessibility of Urgent Care Centers on Emergency Department Utilization for Non-emergent Visits.

Cureus·2025

Search research articles

Related Experiment Video

Updated: May 8, 2026

Testing Tactile Masking between the Forearms

Testing Tactile Masking between the Forearms

Published on: February 10, 2016

The Instrument-Less Instrument Tie.

Will Derenne¹, Christopher Torkilsen², Kevin McGurk²

¹Medical College of Wisconsin, Milwaukee, Wisconsin.

The Journal of Emergency Medicine

|May 6, 2026

Summary

Mastering surgical knots is crucial. This technique teaches trainees to use their fingers to replicate instrument ties, aiding in wound closure when standard methods are challenging.

Keywords:

instrument tie knot laceration suture wound repair

More Related Videos

A Simple Non-invasive Method for Temporary Knockdown of Upper Limb Proprioception

A Simple Non-invasive Method for Temporary Knockdown of Upper Limb Proprioception

Published on: March 3, 2018

A Lightweight Drive Implant for Chronic Tetrode Recordings in Juvenile Mice

A Lightweight Drive Implant for Chronic Tetrode Recordings in Juvenile Mice

Published on: June 2, 2023

Related Experiment Videos

Last Updated: May 8, 2026

Testing Tactile Masking between the Forearms

Testing Tactile Masking between the Forearms

Published on: February 10, 2016

A Simple Non-invasive Method for Temporary Knockdown of Upper Limb Proprioception

A Simple Non-invasive Method for Temporary Knockdown of Upper Limb Proprioception

Published on: March 3, 2018

A Lightweight Drive Implant for Chronic Tetrode Recordings in Juvenile Mice

A Lightweight Drive Implant for Chronic Tetrode Recordings in Juvenile Mice

Published on: June 2, 2023

Area of Science:

Surgical techniques
Wound closure
Medical education

Background:

Instrument ties are a fundamental surgical knot-tying technique.
Limitations exist for instrument ties when manual dexterity is required.

Purpose of the Study:

To provide instructions for trainees on mimicking instrument tie mechanics.
To offer an alternative knot-tying method when conventional techniques are not yet mastered.

Main Methods:

Utilizing the index and middle fingers to simulate instrument tie movements.
Applying principles of manual dexterity in surgical knot tying.

Main Results:

Trainees can replicate the motion of an instrument tie using finger manipulation.
This method serves as a bridge to mastering conventional 1- or 2-handed knots.

Conclusions:

Finger-based simulation effectively mimics instrument tie mechanics.
This technique enhances surgical training for wound closure.