GEM FlowCOUPLER Device and System™


Peace of Mind You Can Hear™

The GEM™ FLOW COUPLER® Device and System is the marriage of two trusted technologies: The GEM™ COUPLER™ and a 20 MHz ultrasonic Doppler. The FLOW COUPLER has been specifically designed for use in end-to-end anastomosis for the detection of blood flow in order to confirm vessel patency intra- and postoperatively at the anastomotic site.

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


Alignment of the probe and accurate monitoring of the velles, reduction noise and interference of adjucent vessels. The fully insulated silver-coated copper coaxial lead wire is less sensitive to noise and signal interference. Loss of an audible signal alerts staff that a potential problem with perfusion may exist.


Monitoring of the outflow vein of the flap will detect cessation of venous flow almost immediately. Interruption of arterial flow will cause a near-immediate loss of the venous Doppler signal. Venous monitoring clearly offers a distinct advantage over arterial monitoring with regard to detecting venous thrombosis and simultaneously serves as a monitor of arterial flow.


Timing of presentation of flap compromise is a significant predictor in flap salvage rates. Intensive monitoring in the initial postoperative period by the clinician leads to early re-exploration and more likely repair.


Reduce Needless Re-explorations. Increase Flap Salvage Rates. Minimize Flap Loss.


** 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 files below:

FlowCOUPLER Monitor MS-0720156.pdf
FlowCOUPLER Device IFU MS-0726960.pdf

“Implantable Venous Doppler Monitoring in Head and Neck Free Flap Reconstruction Increases the Salvage Rate”
<Paydar, K., et al. Journal of Plastic and Reconstructive Surgery, Volume 125, Issue 4, 2010.

“Flap Monitoring and Patient Management”

Salgado, C., Moran, S., Mardini, S. Journal of Plastic and Reconstructive Surgery, Volume 124, Issue 6, 2009.

“Techniques of Monitoring Buried Fascioucutaneous Free Flaps”

Ferguson, R., Yu, P. Journal of Plastic and Reconstructive Surgery, Volume 123, Number 2, 2009.

“Timing of Presentation of the First Signs of Vascular Compromise Dictates the Salvage Outcome of Free Flap Transfers”

Chen, K., et al. Journal of Plastic and Reconstructive Surgery, Volume 120, Number 1, 2007.

“Factors Associated with Anastomotic Failure after Microvascular Reconstruction of the Breast”

Nahabedian, M., Momen, B., Manson, P. Journal of Plastic and Reconstructive Surgery, Volume 114, Number 1, 2004.

“A Prospective Study of Microvascular Free-Flap Surgery and Outcome”

Khouri, R., et al. Journal of Plastic and Reconstructive Surgery, Volume 102, Number 3, 1998.

“The Effect of an Implantable Doppler Probe on the Salvage of Microvascular Tissue Transplants”

Kind, G., et al. Journal of Plastic and Reconstructive Surgery, Volume 101, Number 5, 1998.

GEM2752-FC 2.0mm FlowCOUPLER with 20MHz Doppler
GEM2753-FC 2.5mm FlowCOUPLER with 20MHz Doppler
GEM2754-FC 3.0mm FlowCOUPLER with 20MHz Doppler
GEM1020M FlowCOUPLER Monitor
GEM1010US Power Supply and Cord
GEM1003EXT-FC External Lead
GEM2760-HH IntraOp Doppler


Microvascular Anastomotic Coupling System
GEM2741CC Complete System includes (2) Forceps, and the following components:
GEM2740 Reusable, Titanium-Tipped Anastomotic Instrument
GEM2749 Non-Glare Stainless Steel Double-Ended Vessel Measuring Gauge
GEM4183C COUPLER Forceps, 18cm - For everting the vessel over the pins of the COUPLER

The MCA FLOW COUPLER Device and System



The MCA FLOW COUPLER Monitor Device and System


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