BIX-L65B Baby Bone Marrow Puncture Model: Procurement Notes for Paediatric Wards

A paediatric marrow puncture trainer is bought to reduce the number of first attempts made on a child, so the only specification that matters is whether the tissue behaves like an infant's and whether it can be replaced cheaply enough to be used often. BIX-L65B is listed by the supplier as a baby bone marrow puncture model for paediatric bone marrow aspiration training, with a reference unit price of $235.68 subject to order quantity, and soft tissue described as elastic enough for repeated puncture and wound practice. This guide sets out what to verify, what to ask for in the quotation, and how to run the model in a paediatric skills session.

Why infant marrow puncture needs its own model

Anatomy sets the target, not preference. In infants the proximal tibia is the usual site because the cortex is thin and the marrow cavity is close to the surface. An adult marrow model teaches a different depth, a different angle and a different amount of force, so practising on adult tissue builds the wrong motor pattern.

The consequence of error is different. In a small marrow cavity an over-deep needle, or a needle that slips off the cortex, is a real injury rather than a failed attempt. That is why the model's resistance curve and the depth at which it "gives" matter more than its appearance [1].

Anxiety and consent are part of the skill. Procedural anxiety in children undergoing marrow aspiration is well documented, and managing it is a teachable component of the session rather than a separate soft skill [2]. A model that can be handled calmly, repeatedly and without time pressure is what makes that teaching possible.

What to verify before ordering

1. Ask for the puncture depth and the giving point. Request the depth at which the model simulates entry into the marrow cavity, and check it against the technique your unit teaches.
2. Test the tissue response, not the picture. Ask for a sample or a demonstration video showing the needle passing skin, then cortex, then cavity. Three distinct resistances are the whole product.
3. Confirm the replaceable part. Establish which component is consumed — pad, insert or whole limb — and its price. A $235.68 model with a $60 insert used twice per student is more expensive than one used twenty times.
4. Check the aspiration pathway. If your course teaches aspiration rather than puncture alone, confirm that the model accepts a needle and allows simulated aspirate; the listing describes puncture training, so this must be confirmed in writing.
5. Ask about the accessory set. The listing refers to instruments and consumables; get an itemised list so nothing is assumed to be included.
6. Match the size to your cohort. Infant models are small and light; a class of twenty will need more than one station or a staged rotation.

A 45-minute paediatric session

0–10 minutes: site and hold. Trainee identifies the proximal tibia, positions the leg, and states the hold. No needle yet. Instructor checks that the infant's leg is immobilised the way the unit does it.

10–25 minutes: three resistances. Trainee advances to skin, then cortex, then cavity, naming each change out loud. The narration is the assessment: a trainee who cannot say what they feel cannot repeat it.

25–35 minutes: aspiration and sample handling. Trainee aspirates, labels the sample and states the volume limit for an infant. Hand hygiene before and after the procedure is scored, not assumed [3].

35–45 minutes: complication script. Instructor introduces one scenario — a dry tap, or a needle that meets bone — and the trainee must verbalise the next step. Communication and escalation are drilled with the same seriousness as the puncture.

Cost of ownership, stated simply

The model price is a one-off; the consumable is a yearly line. Take the insert price, divide by the number of punctures it tolerates, multiply by the number of attempts your cohort makes, and add freight. That figure — not the unit price — is what should appear in the budget request. Suppliers quote consumables differently at volume, so ask for a two-year consumable price alongside the model.

Documentation and quotation. Specification, consumable list and current pricing for BIX-L65B are available from chinonmed@adaanatomy.com; include the number of trainees and the procedure steps you assess.

FAQ

Q1. What is BIX-L65B used for? Infant bone marrow puncture training, described by the supplier as a baby bone marrow puncture model for paediatric aspiration practice.

Q2. What is the price? The reference unit price is $235.68, subject to order quantity; freight and consumables are quoted separately.

Q3. Is the tissue replaceable? The tissue is described as soft and elastic with repeated-use capability. Ask the supplier which part is replaceable and its price before ordering.

Q4. Can it be used for other paediatric procedures? The listed purpose is marrow puncture; the same tissue is described as suitable for wound handling practice, but confirm any additional procedure with the supplier.

Q5. How many models does a class need? Plan one station per four to five trainees, with a second model if the cohort exceeds ten, because each puncture attempt takes several minutes.

Q6. Which certifications are stated? ISO 9001, ISO 14001 and ISO 45001 factory certification are listed; request copies for your procurement file.

References

1. Bain BJ. Morbidity associated with bone marrow aspiration and trephine biopsy — a review of UK data for 2004. Haematologica. 2006;91(9):1293–1294.
2. Qin X, Zhao X, Zhou T, Yang D, Yu G. Procedural state anxiety in pediatric leukemia patients undergoing bone marrow aspiration. Mediterr J Hematol Infect Dis. 2026;18(1):e2026021. doi:10.4084/MJHID.2026.021
3. World Health Organization. WHO Guidelines on Hand Hygiene in Health Care. Geneva: WHO; 2009.

For a quotation on BIX-L65B with consumable pricing, write to chinonmed@adaanatomy.com with your trainee numbers and the steps you assess.