BIG Adult Training Leg

Key Specifications

Product Overview

Intraosseous (IO) vascular access is a critical skill in both tactical and civilian emergency medicine — it provides rapid vascular access for fluid resuscitation and medication delivery when standard IV access fails or is not feasible in the timeframe required. The B.I.G. (Bone Injection Gun) is an automatic spring-loaded IO device that delivers the needle to the proximal tibia with a "position and press" mechanism. Like all procedural skills, effective B.I.G. use requires hands-on repetition to build the muscle memory needed for reliable execution under stress.

The EverDixie BIG Adult Training Leg solves the primary training barrier: access to realistic anatomical models for repeated IO practice. Cadaveric specimens are expensive, require specialized handling and disposal, and are not available in most training environments. Live tissue training raises ethical concerns and regulatory barriers. The BIG Adult Training Leg provides anatomically realistic proximal tibia structure — including palpable landmarks that trainees must identify to find the correct insertion site — in a durable, cost-effective, and ethically unambiguous training platform.

The model is sized to adult dimensions comparable to the majority of patients an EMS or military medic will encounter — the standard 15-gauge B.I.G. adult device is designed for use in exactly this anatomical context. Training on an adult-sized model ensures that the positional awareness, force application, and landmark identification practiced on the BIGLEG translates accurately to live patient procedures. Palpable landmarks provide the same tactile feedback that trainees will rely on in field settings where visual exposure may be limited.

B.I.G. Device Training Protocol

1. Palpate the proximal tibia on the training leg — locate the tibial tuberosity and move 1–2 cm medially and 1–2 cm distally to find the flat medial surface of the proximal tibia.
2. Ensure the insertion site is 90° perpendicular to the bone surface.
3. Place the B.I.G. device firmly against the skin at 90° with the arrow pointing down.
4. Stabilize the device and use the palm to press down firmly, deploying the needle.
5. Remove the B.I.G. housing by pulling upward in a slight side-to-side motion while maintaining needle stabilization.
6. Confirm placement by noting correct depth, aspirating marrow, and testing fluid flow.
7. Secure the needle and tape in place before fluid infusion.

Applications in Military and Tactical Medical Training

IO access is a recognized skill in TCCC for combat medics (18D, SARC, PJ, IDC) and tactical medics who must establish vascular access on casualties with collapsed or inaccessible peripheral veins. The proximal tibial approach practiced on this trainer is directly applicable to tactical and combat scenarios where the medic works under stress, with limited lighting, potentially while the patient is in non-standard positions. Training on the BIGLEG builds the palpation confidence needed to find the insertion site under all these conditions.

See also: Manikins & Trauma Task Trainers | Training Kits & Supplies

All products sourced from the actual brand manufacturer or authorized master distributors. CoTCCC recommendation status verified where applicable. Ships from MED-TAC International, Pembroke Pines, FL — clinician-founded, veteran-led, SDVOSB-certified.