In the world of cryonics, where seconds count and precision defines outcomes, simulation isn’t just a training tool—it’s critically important. To prepare dispatch teams for the complex and high-stakes scenarios involved in cryopreservation, Tomorrow.bio has developed new training dummies engineered for realism, performance, and physiological accuracy. These models aren’t mannequins; they’re detailed analogs designed to simulate human biological response under biostasis protocols as closely as possible.

Let’s go inside the lab and explore the purpose and technology behind each of our new dummy types: the Weighted Dummy, the SST Dummy, and the Surgical Dummy.

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The weighted dummy: Training the fundamentals

Transporting a patient from the point of care to a cryonics-capable ambulance may seem like a straightforward task. In reality, it’s a critical phase of any cryopreservation response—where body positioning, timing, and coordination all have an impact. 

Enter the Weighted Dummy.

This dummy is designed with realistic mass and distribution to replicate the feel and resistance of a human body. Whether trainees are maneuvering through narrow hallways, lifting onto stretchers, or simulating stairs and uneven ground, the Weighted Dummy provides the kind of physical resistance that ensures team members build proper technique and muscle memory for utmost patient care.

The emphasis here is on ergonomics, both for the patient and for the team. Getting a feel for body weight distribution helps to increase the hands-on training that prepares responders to act without hesitation.

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The SST dummy: An anatomical focus 

While the Weighted Dummy trains the body, the SST Dummy trains the mind. SST stands for Standby, Stabilization, and Transport, and it lives up to the name. This model has complex features designed to replicate physiological functions and medical interventions that occur in the earliest moments after legal death.

The SST Dummy includes insulated ear and rectal tubing that allows teams to take estimated temperature readings—critical for assessing thermal loss and managing the induction of hypothermia. Integrated tubing runs through the nasal passages and head to simulate nasopharyngeal water cooling, a key aspect of cryonics first response that helps preserve brain tissue by rapidly reducing temperature in the cranial region.

One of the most technically advanced elements of the SST Dummy is its skeletal simulation system. In the upper shoulder and tibia, the dummy includes artificial "bones" embedded beneath layers of synthetic skin. These bones are not human, of course, but they do provide the tactile resistance needed to practice intraosseous injection, a technique used to deliver medications directly into the bone marrow when intravenous access is either delayed or impossible.

But that’s not all. Our R&D team is currently pioneering a system to replicate the physiological effects of End-Tidal CO₂ (EtCO₂), a vital biomarker used in emergency medicine to assess respiration and circulation. The dummy houses a chamber in its chest where a controlled chemical reaction occurs, generating CO₂ gas that travels upward into the throat. This allows teams to visualize and measure exhaled gas levels as they would in a real patient using capnography—closing the loop between action and feedback.

The SST Dummy is a great tool for refinement that allows our team to continuously train.

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The surgical dummy: Where realism meets precision

After the patient is stabilized, surgical access must be gained. That’s why our Surgical Dummy is built to teach this step with anatomical accuracy.

At its core, the dummy features a 3D-printed thoracic cavity, custom-designed to allow organ placement and realistic spatial orientation. This isn't a hollow box with some props thrown in; it’s a meticulously designed structure with a human-like organ system that mimics vascular and skeletal systems as much as possible.

The dummy's centerpiece is its synthetic sternum, designed for surgery just the same as in a field procedure. The sternum piece offers realistic resistance that mimics the density of human bone and is embedded within a full-skin coverage system that conceals the inner mechanics, restoring the look and feel of human anatomy. This thoughtful design is not just about aesthetics—it’s about vastly improving training conditions. Trainees are far more likely to adopt proper technique when immersed in a simulation that feels consequential.

Our new tools allow for increased precision and refinement of our team’s methods, making rigorous training possible. The goal isn’t just technical success; it’s repeatable mastery.

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Why realism matters in Cryonics

The field of cryonics demands rapid action under high-stress conditions. Unlike elective medical procedures, cryonics interventions occur in intense, time-sensitive, and logistically complex scenarios, similar to emergency medical procedures. Our new dummies enable a sense of realism allowing our simulations to be as effective as possible.

From initial pronouncement and cooling, to medication administration and surgical access, we prepare for the real thing. 

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The future of training technology

What’s next? Beyond the current models, Tomorrow.bio is already exploring additional features: integrated vitals monitoring, fluid simulation, and even remote coaching via AR overlays. The goal is to create a complete simulation ecosystem—one where training, feedback, and iteration converge into a seamless system of preparedness.

And while we’ll never fully replace the complexity of a real human body, our new implements allow us to get closer than ever. Cryonics is about the long game—preserving the possibility of future life through today’s most advanced science. But before we can reach tomorrow, we must master today. These three dummies—the Weighted, the SST, and the Surgical—represent our commitment to excellence in every phase of care. With them, we aren’t just training teams.

We’re building the future of human preservation, one simulation at a time.

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