03/16/2026
The Depth Probe v4.0 now comes with a slight hook at the end, the tip of which is placed slightly off center. To provide some additional insight, the handle base is marked with a dimple on the side the tip points, which can be easily felt. The T-bar makes turning the probe easy with lubed hands.
Additionally, they are no longer smooth. Reverse angle ribbing allows one to better hold a grip, and makes itself felt more on the extraction than the insertion, when I appreciated it most.
After 27 years of designing toys, I continue to look for ways to improve the effectiveness and safety in play. For the longest time there's been a marked absence of research into the sigmoid and lower intestines so we've been left to our own community to navigate what shapes would be most effective. Recent research studies into how to automate a colonoscopy has been able to reveal some insights which I've been able to apply to the design of the Depth Probe v4.0. These articles are referenced on the Intro page of my Heath and Safety Guide articles: https://www.squarepegtoys.com/health-safety-guide/ .
Navigating the twists and turns has proven to be the largest obstacle they've encountered, that along with a realization that the lengths of the Sigmoid and varying sections of the large intestine can vary widely among individuals. One of the take aways from my reading has uncovered a common practice when training technicians for getting through sharp bends. They often refer to creating a hook, or bend in the tip of the scope, and then turning it one way or another. The desired result being that the hook catches on the inside of the bend enabling one to move past it.
All my best, Scott
𝗩𝗶𝘀𝗶𝘁 𝘁𝗵𝗲 𝗦𝗾𝘂𝗮𝗿𝗲𝗣𝗲𝗴𝗧𝗼𝘆𝘀® 𝘄𝗲𝗯𝘀𝗶𝘁𝗲 𝗳𝗼𝗿 𝗽𝗿𝗶𝗰𝗶𝗻𝗴, 𝘀𝗶𝘇𝗶𝗻𝗴 𝗮𝗻𝗱 𝗺𝗼𝗿𝗲 𝗗𝗲𝗽𝘁𝗵 𝗣𝗿𝗼𝗯𝗲 𝘃𝟰.𝟬 𝗶𝗻𝗳𝗼𝗿𝗺𝗮𝘁𝗶𝗼𝗻: https://www.squarepegtoys.com/product/depth-probe/
