ASSIST Registry

Driven by evidence

How you perform thrombectomy is a personalized decision you make based on your team and ultimately the patients you treat. We at Stryker set out to compare the clinical results of different thrombectomy techniques by creating the ASSIST Registry. 

This core lab adjudicated study captured real-world data from 1,500 subjects across 71 sites worldwide using Stryker’s Total Stroke portfolio.1

Assist Registry

Excellent real-world results, no matter the technique

Stryker’s Total Stroke portfolio can help you achieve excellent results, no matter your technique. We are committed to investing in clinically proven solutions for you and your patients. We’re with you all the way.

Across all techniques


90D mRS 0-2

TICI 2c+ on first pass

Mean # passes

  SR + BGC Combination Aspiration*
90D mRS 0-2 59% 52% 54%
1st-pass eTICI      
2c+ 48% 44% 36%
2b+ 71% 73% 62%
Final eTICI      
2c+ 70% 65% 66%
2b+ 97% 95% 97%
Mean # passes 1.6 1.6 1.9
Median time to final reperfusion: (minutes) 23.0 29.5 23.0
N=10 subjects excluded due to late screen failure, pending final study eligibility.

Evidence for your approach

Global Map - 1,500 Subjects and 71 Sites


  • Prospective, consecutive enrollment registry
  • All-comer patient population with anterior LVO
  • Core lab adjudicated - 100% procedure data fully verified
  • 71 sites in 11 countries
  • Stryker’s Total Stroke products used on the 1st pass
  • Three technique arms
  • SR+BGC (N=247), combination (N=695), aspiration (N=548)
  SR + BGC Combination Aspiration²
Pre-stroke mRS      
0-1 82% 82% 88%
0-2 90% 88% 94%
NIHSS at presentation 15 14 15
Occlusion location      
Distal ICA 15% 16% 24%
M1 59% 51% 58%
M2 25% 32% 18%
Tandem occlusion 11% 15% 14%
90-Day mRS      
0-1 47% 39% 41%
0-2 58% 52% 59%
sICH 2.4% 2.2% 2.6%
Embolization to new territory 0.8% 0.9% 0.5%
Stroke related mortality 7.7% 8.1% 6.9%

1 Stryker's Total Stroke portfolio is a comprehensive suite of thrombectomy tools. Products included in the ASSIST Registry are: FlowGate^2 and Merci balloon guide catheters, Trevo ProVue Retrievers, AXS Catalyst 5/6/7 distal access catheters, AXS Vecta 71/74 intermediate catheters, and AXS Infinity LS and LS Plus long sheaths.

2 Additional patients may be included in the final manuscript once eligibility is confirmed.


A physician must always rely on his or her own professional clinical judgment when deciding whether to use a particular product when treating a particular patient. Stryker does not dispense medical advice and recommends that physicians be trained in the use of any particular product before using it in a procedure. The information presented is intended to demonstrate the breadth of Stryker product offerings. A physician must always refer to the package insert, product label and/or instructions for use before using any Stryker product. Products may not be available in all markets because product availability is subject to the regulatory and/or medical practices in individual markets. Please contact your Stryker representative if you have questions about the availability of Stryker products in your area.

Stryker or its affiliated entities own, use, or have applied for the following trademarks or service marks: Stryker, Total Stroke. All other trademarks are trademarks of their respective owners or holders. 

The absence of a product, feature, or service name, or logo from this list does not constitute a waiver of Stryker’s trademark or other intellectual property rights concerning that name or logo.