- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03688997
Knot Tying Surgical Simulator for Vessel Ligation
Expert Surgeons Versus Novice Residents: Validating a Novel Knot Tying Simulator for Vessel Ligation
Study Overview
Detailed Description
The simulator is a bench-top simulator with computer acquired assessments, designed to allow novices to acquire basic surgical skills in knot tying. The simulator measures the forces used and applied on the tissue while ligating a vessel.
Each participant received instructions for approximately 10 minutes with a standardized and detailed explanation of the knot-tying technique. All knots were square knots (double-throw knot) using the same type of sutures (SOLFSILK 3.0). Participants were asked to tie two knots in four types: A superficial one hand square knot; A superficial two hand square knot; A deep one hand square knot; A deep two hand square knot.
For each knot six parameters were extracted from the sensor data: maximum upward force, maximum downward force, total upward force, total downward force, absolute non-zero force and performance time. Maximum force is the highest force applied during the knot tying.
Participants were not aware of what exact parameters the simulator was assessing. Novices were explained to avoid tissue rupture or loose knots. Knot integrity was evaluated by an investigator present during the simulation that discarded "air knots". Videos were reviewed by an investigator at post-study analysis to verify the appropriate technique and knot integrity.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- residents within their first year of surgical residency
- attending physicians from general surgery, vascular surgery, cardio-thoracic surgery and gynecology services.
Exclusion Criteria:
-
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Experts
For the novice group, the investigators recruited 30 residents within their first year of surgical residency (Post-Graduate Year [PGY]-1) in general surgery, vascular surgery, plastic surgery, orthopedic surgery, cardio-thoracic surgery, gynecology and urology. The intervention administered was the use of a simulator by the participants. |
bench-top simulator with computer acquired assessments, designed to allow novices to acquire basic surgical skills in knot tying.
The simulator measures the forces used and applied on the tissue while ligating a vessel.
Simulator training was included in both arms (expert and novice groups).
|
Experimental: Novice
The expert's group included 15 attending surgical faculty members in the general surgery, vascular surgery, cardio-thoracic surgery and gynecology services. The intervention administered was the use of a simulator by the participants. |
bench-top simulator with computer acquired assessments, designed to allow novices to acquire basic surgical skills in knot tying.
The simulator measures the forces used and applied on the tissue while ligating a vessel.
Simulator training was included in both arms (expert and novice groups).
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Less extent of force while knot tying for vessel ligation
Time Frame: Through study completion, an average of one year.
|
The simulator will measure the vertical forces (in Newton) exerted while tying 8 knots for vessel ligation.
|
Through study completion, an average of one year.
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Identify peak force while knot tying for vessel ligation
Time Frame: Through study completion, an average of one year.
|
The simulator will measure the maximum upward force (in Newton) used while tying 8 knots for vessel ligation.
|
Through study completion, an average of one year.
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Imri Amiel, MD, Sheba Medical Center
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 2646-15-SMC
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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