BIX-H88 Swallowing Mechanism Model Review: Dysphagia Training, Honestly Assessed

Dysphagia teaching fails when students can name the three phases of swallowing but cannot say which structure failed, and a half head-and-neck model is the cheapest way to fix that. BIX-H88 is a sagittal half model of the adult head and neck, described by the supplier as including the nasal cavity with superior, middle and inferior turbinates, the tongue, teeth, pharynx and larynx, made in a soft material and able to be set in various clinical positions. This review assesses what it contributes to a dysphagia session, how to use it, and which claims it cannot support.

What the model gets right

It puts the airway and the foodway in one object. The single most useful teaching moment in dysphagia is the realisation that the pharynx is shared: air and food pass the same space, and the epiglottis and vocal folds decide which way things go. A half head shows that shared space better than any diagram, because the student can trace the path with a finger and see where it crosses the airway.

Turbinates are not decoration. The superior, middle and inferior turbinates are named in the listing, and they matter for two reasons: nasal breathing and humidification, and the fact that nasogastric tube placement passes them. Students who have seen the turbinates on a model place tubes with fewer blind pushes.

Soft material allows position change. The listing states the model can simulate various clinical positions. That supports the postural component of dysphagia therapy — chin tuck, head rotation — where the point is to show how a change in head position changes the pharyngeal pathway.

What a session should look like

1. Minutes 0–10: name the structures. Nasal cavity, turbinates, hard and soft palate, tongue, teeth, pharynx, larynx. Students point on the model, not on a slide.
2. Minutes 10–20: trace a bolus. Ask one student to move a finger from the oral cavity to the oesophagus while naming each structure passed. Then ask what protects the airway at the level of the larynx.
3. Minutes 20–35: map the failure. Give three scenarios — delayed trigger, residue in the vallecula, nasal regurgitation — and ask which structure on the model corresponds to each. This is the step that converts anatomy into assessment [1].
4. Minutes 35–45: position change. Set the head in two positions and ask what changes in the pharyngeal pathway. Connect to the bedside manoeuvres used in therapy.
5. Minutes 45–55: screen versus assess. Use the model to explain why a screening test is not a diagnosis, and where referral begins [2].

What it cannot do, stated plainly

• No dynamic swallow. The model is static; it cannot show elevation of the larynx, closure of the vocal folds or bolus transit. Videofluoroscopy or FEES remains the reference standard for those.
• No aspiration simulation. Nothing in the listing describes a mechanism for showing aspiration; teach the concept with imaging, not with this model.
• No pathology variants. One section shows one anatomy. Stroke-related asymmetry, surgical resection and tumour are not represented, so case-based teaching still needs images.
• Not a manikin for suction practice. If your session includes suction or tube care, use a dedicated trainer; this is an anatomy and positioning model.

Value judgement

For a nursing or speech-and-language therapy programme that already has imaging resources, BIX-H88 fills the gap between the diagram and the patient: it is the object students handle before they meet a person with dysphagia. Physical models of this kind improve retention of spatial anatomy compared with images alone [3], and dysphagia screening is a skill where structural understanding changes what a nurse notices at the bedside [2]. It is not a substitute for instrumental assessment, and it should not be bought as one.

Buying notes

1. Confirm the section plane. Ask whether the section is mid-sagittal and whether the model separates into parts; this determines whether students can see the larynx from inside.
2. Ask for the structure list. Request the printed key so the terminology matches your syllabus — turbinate naming varies between anatomy texts.
3. Check the stand. Confirm whether the model is supplied mounted, because a loose half head is difficult to position for a group.
4. Plan one model per six to eight students and let pairs rotate; the model is small enough for tabletop work.
5. Request the care instructions. Soft materials deform if stored under load; ask how the supplier recommends storage.

Documentation and quotation. Specification, packing data and current pricing for BIX-H88 are available from chinoncpr@adaanatomy.com.

FAQ

Q1. What anatomy does BIX-H88 show? A half adult head and neck with nasal cavity, superior, middle and inferior turbinates, tongue, teeth, pharynx and larynx, in a soft material.

Q2. Can it demonstrate swallowing? It demonstrates the anatomical pathway and can be set in different clinical positions. It is static, so it cannot show laryngeal elevation or bolus transit.

Q3. Is it suitable for teaching nasogastric tube placement? It helps students understand the nasal passage and turbinates, but tube-placement practice needs a dedicated trainer with an oesophagus and stomach.

Q4. What material is it made of? A soft material described by the supplier as having advanced softness, which allows the model to be positioned.

Q5. Who is it designed for? Nursing students, speech and language therapy trainees and ward educators teaching swallowing function and dysphagia care.

Q6. What is the price and minimum order? Quoted per order, depending on quantity and destination; request packing data with the quotation.

References

1. Sasegbon A, Hamdy S. The anatomy and physiology of normal and abnormal swallowing in oropharyngeal dysphagia. Neurogastroenterol Motil. 2017;29(11):e13100. doi:10.1111/nmo.13100
2. Mancin S, Sguanci M, Reggiani F, et al. Dysphagia screening post-stroke: systematic review. BMJ Support Palliat Care. 2024;13(e3):e641–e650. doi:10.1136/spcare-2022-004144
3. Yammine K, Violato C. The effectiveness of physical models in teaching anatomy: a meta-analysis of comparative studies. Adv Health Sci Educ Theory Pract. 2016;21(4):883–895. doi:10.1007/s10459-015-9644-7

For a quotation on BIX-H88, including the structure key and packing data, write to chinoncpr@adaanatomy.com with your course level and class size.