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ETHICON Circular Stapler
The Ethicon Circular Stapler with its Controlled Tissue Compression and Adjustable Height Staple technology is designed to deliver the desired compression necessary for a strong anastomosis and effective perfusion.1,2*
Features & Benefits
Controlled Tissue Compression
Ethicon Circular Staplers with controlled tissue compression caused significantly less unacceptable tissue damage than fixed compression circular staplers.3†
Reduced Force to Break Through the Cutting Washer4‡
The Ethicon Circular Stapler, with up to 35% reduced cutting force to break through the washer compared to the previous circular stapler, enabled users to more easily complete the firing sequence.4‡
Less Tension on Tissue During Closure and Opening5§
The Ethicon Circular Stapler, with its fixed anvil design and continuously smooth anvil shaft, produced significantly less tissue displacement during closure and tissue strain during opening than the Medtronic DST Series™ EEA™ Stapler with its tilting anvil.5§
More Device Feedback When Firing6¶
With its breakaway washer, the Ethicon Circular Stapler created more audible and tactile feedback than the Medtronic DST Series EEA.6¶
* In a porcine model maximum intraluminal pressure of an anastomosis correlated most strongly with the compression of the tissue involved in the anastomosis.
† In-vitro collagen tissue model with Ethicon Circular Staplers, 19 out of 232 collagen tissues exhibited unacceptable tissue damage with adjustable compression (CDH29A), vs. 29 out of 88 with Medtronic fixed compression (EEA28 with green cartridge). Unacceptable injury was defined as cases where the damage exceeded half of the collagen thickness.
‡ Benchtop testing of force to fire of Ethicon 25mm devices, comparing means of 70.92 in*lbf for CDH25B (n=32) to 111.28 in*lbf for CDH25A (n=32), p<0.05.
§ Benchtop testing on porcine colon, comparing means of 1.214mm for Ethicon CDH29B (n=23) to 10.240mm for Medtronic EEA28 (n=23), p<0.001 for tissue displacement, resulting in 8.4 times less longitudinal displacement during closure for CDH29B, and comparing means of 0.022 for Ethicon CDH29B (n=23) to 0.081 for Medtronic EEA28 (n=23), p=0.0016 for tissue strain, resulting in 3.7 times less circumferential strain during opening for CDH29B.
¶ For use with updated codes (B codes): Benchtop testing comparing average vibration measured as mean vectorial acceleration during firing. ECS29B 11762mm/s2 vs EEA28 3707mm/s2, (p<0.001, 95% CI for difference = 6788mm/s2, 9322 mm/s2). Benchtop testing comparing mean peak sound intensity during firing. ECS29B 100.46dB (linear) vs EEA28 96.32dB (linear), (p=0.003, 95% CI for difference = 1.57, 6.71).
1. Ethicon, SCN052882B Summary of Design Intent for Ethicon Circular Stapler to support market claims, Jan 2021, Data on file (114092-201126 EMEA)
2. Meyer S, Rothermel WS Jr, Shaffer L. The effect of tissue compression on circular stapler line failure. Surg Endosc 2011; 25(9):3043-9 (107243-210118 EMEA)
3. Son G, Kwon M, Ahn H, et al. Compression injury of the circular stapler for gastrointestinal end-to-end anastomosis: preliminary in-vitro study. Ann Surg Treat Res. 2020;99:72-81.
4. Ethicon PRC085922C Reno vs. Kodiak Force to Fire Comparison, April 2020, Data on file Ethicon, SCN051609 Attachment 1 Reno Surgeon Research Executive Summary, May 2017, Data on file (109888-200713 EMEA)
5. Ethicon, PSB004770 Tissue Displacement and Deformation of Ethicon RENO (RENO) and Medtronic DST (DST) Circular Staplers on Harvested Porcine Colon, May 2018, Data on file (109880-210127 EMEA)
6. Ethicon, 17112017 OMECO Technical Report # REL/3393/17 Comparison of peak sound and vibration produced by disposable surgical circular staplers, Nov 2017, Data on file Ethicon, 2911017 Project RENO Audible and Tactile Comparison Statistical Analysis, Signed Memo, Nov 2017, Data on file (109884-210127 EMEA)
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Last updated February 22, 2019. The third-party trademarks used herein are trademarks of their respective owners. Data and usage fees may apply. See your carrier for more information.
*As of March 2017, per internal research conducted by Ethicon.