Tools of the Trade: The Retentia ® Clip
Klaus Mönkemüller, MD, PhD, FASGE, FJGES
Department of Gastroenterology, Carilion Memorial Hospital, Virginia Tech Carilion School of Medicine, Roanoke, USA

Figure 1. Retentia Clip. Key technical information.
The Retentia Clip has some interesting and nice features:
- It is rotatable,
- It can be deployed with scope in retroflexed position,
- It can open and close repeatedly. I opened and closed one 30 times,
- Its catheter has a 2.5 mm outer diameter, allowing for simultaneous suction of air and liquids through the working channel.
These are very convenient features, as they allow the endoscopist to be 100% sure of the desired placement location (vessel, base of polyp, wound closure, etc). Additionally, this clip is quite big, with an arm extending up by 16 mm. This allows for grasping more tissue or tackling larger defects. Lastly, the clip’s stem is short (6 mm, yellow arrow), making it ideal for small lumens, such as the esophagus or small bowel.
Disclaimer: I have no conflict of interest (COI). No commercial interest.