Visionstar TR-500

Paediatric work is the clearest application, and the reasoning is about measurement quality rather than comfort. A child seated with feet dangling cannot maintain a steady head position: they brace against the chair, shift to find purchase, and tire. Steady head position is the precondition for every measurement taken at a chin rest, so a seat that brings the feet within reach of the floor changes what can actually be recorded, not merely how the appointment feels. At 410 mm this unit reaches a considerably wider range of children than 460 mm does.

Adults of smaller stature gain for the same reason. The distinction between a low minimum and a low band matters here: a patient may transfer comfortably onto a 460 mm seat and still sit too high for instrument alignment, with the clinician compensating by raising equipment already set. Moving the whole range down 50 mm addresses the seated position as well as the entry.

Wheelchair users are served more completely than by the units above this one, since 410 mm sits below essentially every standard wheelchair seat height rather than close to it.

Narrow rooms benefit incidentally: 1200 mm wide against 1510 mm for its closest stablemate, on the same depth, at 150 kg rather than 168 kg.

Two things belong in the decision. The top of the band is 550 mm, so taller patients are better served by a stablemate reaching 600 mm — consider the caseload rather than the extreme. And four figures published on the closely related models are absent here: table slide range, chair rotation, pillow lift and backrest obliquity. Whether those features are missing from the datasheet or from the unit is unstated, and should be established in writing.

The whole band moved, not just the minimum

Four hundred and ten to 550 mm against 460 to 600 mm. A low minimum helps a patient into the chair; a low band helps them once they are in it.

Steady heads on smaller patients

A child with dangling feet braces, shifts and tires — and a steady head is the precondition for every chin rest measurement. A seat within reach of the floor changes what can be recorded.

Below wheelchair seat height properly

Four hundred and ten millimetres sits below essentially every standard wheelchair seat rather than merely close to it, so transfer is unambiguously a lateral move.

No compensating with the equipment

A patient sitting too high forces the clinician to raise instruments already set. Lowering the seat band removes that adjustment from the routine.

Narrower and lighter than its stablemates

Twelve hundred millimetres against 1510 mm on the same depth, and 150 kg against 168 kg — easier to place and easier to deliver.

The high-output lamp retained

Forty watts, the brighter of the two options in this family, kept despite the reductions elsewhere in the specification.

The full electrical schedule

Supply, engine power, fuse and wire ratings, duty classification and operating envelope all published — enough for an electrician to specify a circuit before attending.

Chair height 410–550 mm

The chair works between 410 and 550 mm, the lowest seat band in this range and 50 mm below its closest stablemates at both ends.

1200 × 1000 × 2130 mm

The unit measures 1200 mm wide — 310 mm narrower than its closest stablemate — on the same 1000 mm depth, at 2130 mm high.

150 kg weight

The unit weighs 150 kg, 18 kg less than its closest stablemate.

Chair loading 150 kg

Rated loading is 150 kg, matching the rest of this family.

40 W lamp

Illumination draws 40 W, the higher of the two outputs in this family.

90° table rotation

The table rotates through 90°; sizes are 840 × 405 mm and 670 × 405 mm.

Swing arm ±30°

The swing arm moves 30° either side of centre.

Full electrical schedule

110V/220V AC at 50–60 Hz, 55 W engine power, 1 W no-load draw, 5 A 250 V fuse, 10 A 250 V main wire, 2 kV pressure test, S1 continuous duty.

Operating envelope −10 °C to +40 °C

The unit is rated across a wide temperature range at under 90% relative humidity.

The Visionstar TR-500's chair works between 410 and 550 mm, where its closest stablemates run 460 to 600 mm and every other unit in this range sits higher still. The important part is that the whole band has moved down 50 mm rather than just the minimum: a low minimum helps a patient get into the chair, while a low band helps them once they are in it — and a smaller patient may transfer comfortably onto a 460 mm seat and still sit too high for instrument alignment. For paediatric work the argument is about measurement rather than comfort, since a child with dangling feet braces, shifts and tires, and a steady head position is the precondition for everything measured at a chin rest. The unit is also 310 mm narrower and 18 kg lighter than its closest stablemate, retains the 40 W lamp and carries the full published electrical schedule. Two things to settle: the band tops out at 550 mm, so taller patients are better served elsewhere in this family, and four figures published on the related models — table slide, chair rotation, pillow lift and backrest obliquity — are absent here, with no indication whether the features or merely the figures are missing. Medigear.uk supplies the TR-500 into the UK with pre-despatch functional inspection, documentation review and specification confirmation. Contact the Medigear.uk team for current pricing, quantity quotations, paediatric configuration advice, or bespoke enquiries.