Comparison Study of Two Different Surgical Clips During Laparoscopic Urologic Surgery

April 17, 2017 updated by: Stanley Duke Herrell, Vanderbilt University Medical Center

Minimally Invasive Urologic Surgery Clip Evaluation: Can We Improve Our Surgical Technique, Reduce Costs and Waste With the Aesculap U-clip Versus the Tele-Flex Hemolock Clip?

Intracorporeal suturing and knot tying during robotic prostatectomy and laparoscopic and robotic renal surgery have historically been considered the most technically challenging and time consuming aspects of these procedures. With improved operative technique as well as the use of innovative surgical devices, vascular control during these surgeries is often less cumbersome as compared with traditional techniques. Current standard methods of hemostasis include the use of clips, of which the most popular design is the Hemolock, a locking, nonabsorbable plastic clip, or the use of the very expensive endomechanical stapler. Unfortunately while they are associated with time savings in the operating room, there is a great deal of disposable costs associated with these various devices as well as a not insignificant device malfunction rate reported in the literature. The aim of this case-controlled study is to evaluate the Aesculap U-clip device compared to our current technique of vascular control using the Teleflex Hemolock clip device during minimally invasive genitourinary surgery.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
11

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Tennessee
      • Nashville, Tennessee, United States, 37212
        • Vanderbilt University Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • All patients ≥ 18 years old with genitourinary malignancy either prostate cancer or kidney renal masses undergoing minimally invasive genitourinary organ removal will be included in this small pilot study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Device Feasibility
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Placebo Comparator: Teleflex HemoLock clip
Patients randomized to the Aesculap U-clip device or the HemoLock clip will undergo their respective surgery (robotic prostatectomy and laparoscopic and robotic renal surgery) as per standard protocols. During the surgical procedure, when primary vascular control is warranted the appropriate clip to which the patient has been randomized will be utilized. Immediate assessment of the vascular pedicle will subsequently occur
Device: Teleflex HemoLock clip
Patients randomized to the Aesculap U-clip device or the HemoLock clip will undergo their respective surgery (robotic prostatectomy and laparoscopic and robotic renal surgery) as per standard protocols. During the surgical procedure, when primary vascular control is warranted the appropriate clip to which the patient has been randomized will be utilized. Immediate assessment of the vascular pedicle will subsequently occur; if hemostasis is not adequate, additional clipping, endomechanical stapling or suture ligation will then be performed as necessary.
Active Comparator: Aesculap U-Clip
Patients randomized to the Aesculap U-clip device or the HemoLock clip will undergo their respective surgery (robotic prostatectomy and laparoscopic and robotic renal surgery) as per standard protocols. During the surgical procedure, when primary vascular control is warranted the appropriate clip to which the patient has been randomized will be utilized. Immediate assessment of the vascular pedicle will subsequently occur.
Device: Aesculap U-clip
Patients randomized to the Aesculap U-clip device or the HemoLock clip will undergo their respective surgery (robotic prostatectomy and laparoscopic and robotic renal surgery) as per standard protocols. During the surgical procedure, when primary vascular control is warranted the appropriate clip to which the patient has been randomized will be utilized. Immediate assessment of the vascular pedicle will subsequently occur; if hemostasis is not adequate, additional clipping, endomechanical stapling or suture ligation will then be performed as necessary.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
significant difference in clip misfire and misapplication rates
Time Frame: 1month
1month

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
blood loss / need for transfusion
Time Frame: 1 month
1 month
OR time
Time Frame: 1 day
1 day
Need for repeat procedure
Time Frame: 1 month
1 month
number of clips used
Time Frame: 1 day
1 day
surgeon impression of the ease of application
Time Frame: 1 day
1 day
predicted cost differential (or at least charge differential)
Time Frame: 1 month
1 month

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Vanderbilt University Medical Center

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: S. Duke Herrell, MD, Vanderbilt University Department of Urologic Surgery

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2009

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 1, 2011

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2012

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 30, 2009

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 5, 2009

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 6, 2009

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 19, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 17, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 090917

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

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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