GEM Microvascular Anastomotic COUPLER System™


The Fast, Safe, Easy Way to Perform Microvascular Anastomosis™

The GEM Microvascular Anastomotic COUPLER™ System has been specifically designed for use in the anastomosis of veins and arteries normally encountered in microsurgical procedures.

NOTE: The GEM COUPLER System is completely latex free. Read here for more information.


Intima-to-intima contact without any intraluminal foreign (suture) material which should decrease the rate of thrombosis.


Most anastomoses using the COUPLER can be completed in 3-8 minutes* saving valuable OR time, reducing ischemic time for the flap, and patient exposure to anesthesia.


Clinical reports show an equal or greater patency rate when the COUPLER is used as opposed to conventional suturing technique.*


Manages vessel size mismatches better than traditional suturing techniques. Simplicity and dependability in both end-to end and end-to side anastomotic configurations.


Anastomoses are 50% stronger than sutured anastomosis at 4 months, and may benefit from the scaffold effect of the rings which prevent the vessel wall from collapsing.*


* References on file

** Rx Only. See instructions for use for indications, warnings, precautions, side effects and contraindications.


Please see important safety information in the Instructions For Use located in the enclosed file below:

GEM COUPLER System Instructions For Use

GEM COUPLER System Cleaning and Sterilization Instructions

“Lower Extremity Free Flap Reconstruction Outcomes Using Venous Coupler”
Ducic, I., Brown, B., and Rao, S. Microsurgery. Volume 31, Number 5, July, 2011.

“1000 Consecutive Venous Anastomoses Using the Microvascular Anastomotic Coupler in Breast Reconstruction”
Jandali, S., et al Journal of Plastic and Reconstructive Surgery. Volume 125, Number 3, March, 2010.

“Use of a Microvascular Coupler for repair of Major Distal Upper Extremity Artery Injuries”
Hallock G., and Rice, D. Journal of Hand Microsurgery. 1(1):3-6,2009.

“End-to-Side Venous Anastomosis With an Anastomotic Coupling Device for Microvascular Free-Tissue Transfer in Head and Neck Reconstruction”
Chernichenko, N., et al. The Laryngoscope. Volume 118, December, 2008.

“Early Experience With The New ‘MegaCoupler’ Ring-Pins For Microvascular Anastomoses”
Hallock G., and Rice, D. Journal of Plastic, Reconstructive & Aesthetic Surgery, Volume 61, Number 8, Epub, May, 2008.

“Venous Thrombosis in Coupled Versus Sutured Microvascular Anastomoses”
Yap, L., Constantinides, J., Butler, C. Annals of Plastic Surgery. Volume 57, Number 6, December 2006.

“Routine Use Of Microvascular Coupling Device For Arterial Anastomosis In Breast Reconstruction”
Spector, J. et al. Annals of Plastic Surgery. Volume 56, Number 4, 2006.

“Arterial Coupling for Microvascular Free Tissue Transfer in Head and Neck Reconstruction”
Ross, D., et al. Archives of Otolaryngology Head and Neck Surgery. Volume 131, October, 2005.

“Management of Significant Venous Discrepancy with Microvascular Venous COUPLER”
Sullivan, S., Dellacrose, F. and Allen, R. Journal of Reconstructive Microsurgery, Volume 19, Number 6, 2003.

“Technique and Clinical Experience of the Unilink/3M® Microvascular Anastomotic Coupling Device in Free Flap Surgery”
Cope, C., et al. The Internet Journal of Plastic and Reconstructive Surgery. Volume 1, Number 1, 2001.

“Use of a Mechanical Microvascular Anastomotic Device In Head And Neck Free Tissue Transfer”
Shindo, M., et al. Archives of Otolaryngology Head and Neck Surgery. Volume 5, Number 122, 1996.

“Microsurgical Reconstruction of the Lower Extremity Using the 3M Microvascular Coupling Device in Venous Anastomosis”
Denk, M., et al. Annals of Plastic Surgery. Volume 6, Number 35, 1995.

“Clinical Experience With a Microvascular Anastomotic Device in Head And Neck Reconstruction”
Delacure, M., et al. American Journal of Surgery. Volume 5, Number 170, 1995.

“Clinical Use of the 3M 2.5mm Mechanical Microcoupling Device in Free Tissue Transfer”
Sasson, H., Stofman, G., Berman, P. Microsurgery, Volume 6, Number 15, 1994.

“Clinical experience with the 3M microvascular coupling anastomotic device in 100 free-tissue transfers”
Ahn, C., et al. Journal of Plastic and Reconstructive Surgery, Volume 7, Number 93, 1994.

GEM Microvascular Anastomotic Coupling (MAC) System
GEM2741CC Complete System includes the following components:
GEM2740 Reusable, Titanium-Tipped Anastomotic Instrument
GEM2745 Anodized Aluminum Sterilization Tray
GEM2749 Non-Glare Stainless Steel Double-Ended Vessel Measuring Gauge
GEM4183C (2) COUPLER Forceps,18cm, for everting the vessel over the pins


GEM2750 1.0mm COUPLER
GEM2751 1.5mm COUPLER
GEM2752 2.0mm COUPLER
GEM2753 2.5mm COUPLER
GEM2754 3.0mm COUPLER
GEM2755 3.5mm COUPLER
GEM2756 4.0mm COUPLER

The MCA COUPLER Device and System

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