Patented. Peer-reviewed. Trusted across 500+ surgeries.
The Shira 3-Jaw Clamp is the only microvascular approximator clamp in the world with three independently spring-loaded jaws. It is the result of translational research at IIT Madras, validated in three peer-reviewed publications, and used at leading microsurgery centres including AIIMS, Apollo, Fortis, Max, Medanta and Aster.
What surgeons experience with conventional 2-jaw clamps
Vessel wall folds inward (backwalling), obscuring the lumen
Clamp must be flipped to suture the posterior wall — adding time and risk
Adventectomy required to prevent tissue entrapment
Anastomosis takes 15–45 minutes on average
OT light reflection off the clamp reduces visibility
Vessel slippage from clamp jaws
How the 3-Jaw mechanism solves each problem
Problem
3-Jaw Solution
Surgical Benefit
Backwalling / lumen obscured
Three jaws evert the vessel wall, keeping the lumen fully open
0% backwalling — confirmed in RCT (vs Acland)
Posterior wall suturing requires clamp flip
Everted lumen gives direct posterior wall access
Clamp flip eliminated — no position change needed
Adventectomy needed
Third jaw grips adventitia instead of trimming it
Adventectomy not required — preserving adventitia accelerates healing
Anastomosis time
Faster set-up, no flip, no adventectomy
2× faster — 35% faster in veins, 50% faster in arteries vs Acland
OT light reflection
Black anti-reflective coating on all jaw surfaces
Zero glare — easy to identify the clamp under microscope
Vessel slippage
Micro-grit gripping surface on jaw faces
Secure grip with less applied pressure — reduced intima trauma
Clinical validation
RCT: anastomosis time reduced by 35% (veins) and 50% (arteries) vs Acland — p<0.001
Trainee study: 0% backwalling vs 30.8% with Acland; 0% clamp flip needed vs 38.5% with Acland; p=0.007
Peer-reviewed publications: Journal of Plastic, Reconstructive & Aesthetic Surgery; Indian Journal of Plastic Surgery
Dr. Aniket Dave (Ahmedabad): 500+ surgeries using the Shira 3-Jaw Clamp
Engineering specifications
Calibrated closing pressure — sufficient and consistent grip without over-compression
Black anti-reflective coating on all jaw surfaces
Micro-grit gripping surface to prevent vessel slippage
Available in multiple sizes (2VV, 2AA, 3, HD) for vessels from digital arteries to radial artery scale
Fits Shira Clamp Sterilization Case (7-clamp capacity)
Compatible with Shira Clamp Applicator (asymmetric jaw design required for 2VV/2AA sizes)
Vessel size guide
2VV / 2AA — small vessels (digital arteries and small perforators)
3 — medium vessels (common free flap pedicles)
HD — large vessels (radial artery, larger pedicles)
If there is no adventitia
The 3-Jaw Clamp can be used exactly like a 2-jaw clamp when the vessel has minimal adventitia — no technique change required.
ISO 13485 Certified · CDSCO Registered · MDA Malaysia Registered · Exported to 20 countries
