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Visionstar SJD-C18

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Visionstar Dental And Oral Care Equipment

Visionstar SJD-C18

Product Code: DAOC-DI-2831

Seventy kilovolts changes the distance rule. Ask for the cone length.

Fixed at 70 kV, which changes what the cone has to do. The Visionstar SJD-C18 runs a KL11 head at 70 kV / 2 mA with a 0.4 mm focus, 0.04–2.0 s timing and closed-loop output regulation.

Sections

Intraoral X-ray Units

Categories

Dental And Oral Care Equipment

Condition

New

Origin

China

Seller Type

Certified Professional Seller

Size:

340 × 250 × 255 mm

CE & ISO Certified

Global Shipping

Supplier: Medigear

The Visionstar SJD-C18 is a battery-powered dental X-ray generator built on a KL11 tube head. Tube voltage is 70 kV with a stated ±10% tolerance, tube current is 2 mA with a ±20% tolerance, the anode angle is 12.5° and the focus is 0.4 mm. Exposure timing runs from 0.04 to 2.0 seconds. Leakage emissivity is published at ≤0.25 mGy/h at one metre.

The kilovoltage is the defining specification and it carries a consequence worth understanding before order. UK dental guidance sets a minimum focus-to-skin distance for intraoral equipment, and the required figure steps up for sets operating above 60 kV — commonly expressed as 100 mm at 60 kV and below, and 200 mm above it. A unit fixed at 70 kV sits unambiguously in the higher category. This data sheet publishes no focus-to-skin distance and no cone length, so that figure has to be obtained from the manufacturer and put in front of your Radiation Protection Adviser before the unit goes into service. It is the first question to ask.

The kilovoltage also shapes the radiographic result. A 70 kV beam is penetrating and produces a long greyscale, which suits reading a range of densities from one image, and it reaches a given receptor density in a short exposure. The ±10% tolerance is worth noting too, since it defines the band your beam quality assessment works across.

Output regulation is the other distinguishing feature. The manufacturer describes a double closed-loop system holding voltage stable, with the stated effect that a low battery does not degrade image quality. Battery-powered generators can drift as a pack depletes, and drift shows up as inconsistent receptor density across a session, so active regulation is a meaningful claim — ask for the regulation tolerance in writing.

Battery endurance is published at 500 shots from a full charge. Medigear.uk can arrange supply, delivery, commissioning, staff familiarisation and service cover for the SJD-C18 across the United Kingdom.

Intraoral radiography carries the diagnostic load in UK general dentistry, and the SJD-C18 is configured for that daily volume. It supports bitewing caries detection, periapical assessment of pathology, endodontic working-length and obturation verification, alveolar bone-level review, and root morphology assessment ahead of extraction.

Operation at 70 kV shapes both the radiographic result and the installation requirements. A 70 kV beam is penetrating and produces a long greyscale, which helps where a span of densities has to be read from one image — crestal bone, root surface and surrounding trabecular pattern on a periodontal view, or dense restorative material alongside tooth structure. It also reaches a given receptor density in a short exposure, which shortens the time a receptor has to be exposed.

The same kilovoltage sets the installation bar. UK guidance requires a longer minimum focus-to-skin distance for equipment operating above 60 kV, and this unit sits in that category by design. Because the data sheet publishes no focus-to-skin distance or cone length, this is a specification to resolve before purchase rather than at commissioning, and the answer determines whether the unit can be used as supplied.

Output regulation matters wherever views are compared. Serial periodontal review, endodontic sequences and post-treatment films all depend on receptor density being consistent between exposures, and a generator whose output holds steady as its battery depletes supports that across a long list or a domiciliary round.

Community dental services and special care teams need equipment one clinician can carry. Net weight is not published, so confirm it before assessing single-person handling, and agree off-site radiation protection arrangements with the RPA in advance.

Guidance from the College of General Dentistry and UKHSA Dental X-ray Protection Services remains the reference point UK practices work to, alongside HSE enforcement of IRR17.

A 70 kV beam and a long greyscale

A 70 kV output penetrates readily and spreads a broad range of densities across the image, which suits views where crestal bone, root surface and restorative material all have to be read together.

Short exposures for a given density

At 70 kV, a given receptor density is reached in a short exposure, which narrows the window for patient movement and shortens the period a receptor has to be held in place.

Output held steady as the battery depletes

The described double closed-loop regulation addresses drift, which is a genuine characteristic of battery generators and presents as inconsistent density across a session. Ask for the regulation tolerance in writing.

Exposure control from 0.04 seconds

A timing floor of four hundredths of a second reaches the short values fast direct sensors call for, with the range extending to two seconds for slower receptors.

Endurance stated for round planning

A published figure of 500 shots per full charge gives a community team something concrete to plan a domiciliary round against, treated as an upper bound.

Leakage figure published

Housing leakage at one metre is stated, giving your Radiation Protection Adviser a figure to work with when assessing controlled area and operator position.

Grip belt for single-hand operation

An ergonomic belt supports one-handed carrying and holding, with a power-saving mode that turns the screen off after a period without operation.

Specification gaps identified before order

Focus-to-skin distance, total filtration and net weight are all absent from the data sheet. Medigear.uk can arrange for each to be requested from the manufacturer with your quotation, so your Radiation Protection Adviser can review them before commissioning.

70 kV tube voltage, ±10% tolerance

Fixed kilovoltage above the 60 kV threshold, which determines the minimum focus-to-skin distance that applies under UK guidance.

2 mA tube current, ±20% tolerance

Published tube current with its stated tolerance band, which your Medical Physics Expert carries into protocol setting.

KL11 tube head

The tube head is identified by model, giving your Radiation Protection Adviser and service engineer a reference point for beam quality data and parts.

0.4 mm focus

Published focus size, one of the figures governing geometric sharpness at the receptor alongside working distance and receptor position.

12.5° anode angle

Published anode angle, influencing the effective focal spot seen at the receptor and the intensity distribution across the field.

0.04–2.0 second exposure range

A fifty-fold span reaching fast direct sensors at the short end and slower receptors at the upper limit.

Double closed-loop voltage regulation

Manufacturer-described active regulation holding output steady as the battery depletes; request the regulation tolerance and the voltage range across which it holds.

Leakage emissivity ≤0.25 mGy/h at one metre

Published housing leakage figure, used by the RPA in assessing controlled area and operator position.

Imported lithium battery, 500 shots per charge

Manufacturer-stated endurance from a full charge; capacity in milliamp hours is not published, so request it at quotation.

Medical-grade power adapter

The charger accepts 100–240 V at 50–60 Hz, so the unit runs on UK mains directly.

Large display with tactile keys

A large panel and positive key action present the exposure setting and machine state on the control face.

Power-saving screen timeout

The display switches off automatically after a period without operation, conserving charge across a long session.

Ergonomic grip belt

An integrated belt supports single-hand carrying and holding through the exposure.

340 × 250 × 255 mm packed, 4 kg gross

Published carton dimensions and gross weight; net weight is not published, so request it before assessing single-person handling.

The Visionstar SJD-C18 gives UK dental teams a battery-powered X-ray generator built on a KL11 tube head, running at 70 kV ±10% and 2 mA ±20% with a 12.5° anode angle, a 0.4 mm focus, an exposure range from 0.04 to 2.0 seconds, double closed-loop voltage regulation and a stated 500 shots per charge, with published leakage of ≤0.25 mGy/h at one metre. It fits NHS and private general practice, periodontal and restorative work benefiting from a longer greyscale, endodontics, community dental services and outreach programmes. Because the unit operates above 60 kV, the focus-to-skin distance requirement is the longer of the two figures UK guidance sets, and neither that distance nor the total filtration appears on the data sheet. Medigear.uk can arrange supply, delivery, commissioning, staff familiarisation, service cover and planned maintenance across the United Kingdom, and can arrange for the manufacturer's cone specification, focus-to-skin distance, total filtration, half-value layer and net weight figures to accompany your quotation for your Radiation Protection Adviser's review. Contact the Medigear.uk team for pricing, lead times and configuration enquiries.

FAQ

Frequently Asked Questions

Everything buyers need to know about sourcing medical equipment through MediGear.

The focus-to-skin distance requirement, and that is the most important thing on this page. UK dental guidance sets a minimum distance from the focal spot to the patient's skin, and the figure steps up for equipment operating above 60 kV — commonly given as 100 mm at 60 kV and below, and 200 mm above it. A generator fixed at 70 kV falls into the higher category with no ambiguity, so the supplied cone has to deliver that longer distance. Confirm the figure with the manufacturer before ordering, and have your Radiation Protection Adviser satisfy themselves on it before the unit is used.

None. The data sheet gives tube voltage, current, anode angle, focus, timing and leakage, but no focus-to-skin distance and no cone length. That gap matters because the applicable minimum here is the longer of the two figures UK guidance sets. Request the cone specification and the resulting focus-to-skin distance in writing at quotation, and ask whether a longer cone is available if the standard one falls short. Medigear.uk can arrange for that information to be requested from the manufacturer.

It defines the band your beam quality assessment has to work across. A nominal 70 kV with a ±10% tolerance describes a range rather than a single value, and your Medical Physics Expert will want to know it when setting exposure protocols, as will the engineer performing radiological testing. It is a normal thing for a manufacturer to state; it simply needs carrying into the assessment rather than being read as a fixed number.

No. Inherent and total filtration are both absent from the data sheet. Total filtration is the figure a Radiation Protection Adviser works from when assessing beam quality, and a minimum of 1.5 mm aluminium equivalent is commonly cited for intraoral sets operating up to 70 kV. Request the total filtration figure and the half-value layer data from the manufacturer, and have your RPA review both alongside the focus-to-skin distance before commissioning.

The manufacturer describes it as holding tube voltage stable, with the stated effect that a depleting battery does not degrade image quality. That addresses a real characteristic of battery-powered generators: as a pack loses charge, output can drift, and drift presents as inconsistent receptor density across a session, which undermines comparison between views. Active regulation is therefore a substantive feature rather than a cosmetic one. Ask for the regulation tolerance and the voltage range across which it holds.

Leakage emissivity of ≤0.25 mGy/h at one metre describes radiation escaping the tube housing in directions other than the useful beam, measured at that distance. It is a housing figure and is separate from operator scatter dose during an exposure, which depends on technique, receptor, shielding and where the operator stands. Your Radiation Protection Adviser uses the leakage figure in assessing the controlled area and operator position, and will measure the doses that actually apply in your surgery.

The data sheet publishes a gross weight of 4 kg and a packing size of 340 × 250 × 255 mm, which describe the shipped carton rather than the unit in the hand. Net weight is not published. That distinction matters if you are assessing single-person handling for a full list or a domiciliary round, so request the net weight at quotation before assuming the unit is comparable in the hand to its carton figure.

The Ionising Radiations Regulations 2017 require employers carrying out dental X-ray work to register with the Health and Safety Executive, appoint a Radiation Protection Adviser, nominate a Radiation Protection Supervisor and complete a radiation risk assessment. The Ionising Radiation (Medical Exposure) Regulations 2017 add the appointment of a Medical Physics Expert, justification and optimisation of each exposure, and documented training for referrers, practitioners and operators. A critical examination is required when the equipment is put into service.

Dental X-ray equipment is subject to routine quality assurance and periodic radiological testing under IRR17, alongside annual electro-mechanical inspection, with a critical examination required at installation. UK service providers commonly apply an annual radiological testing interval to hand-carried units. Warranty terms are set and issued by the seller or manufacturer, typically 12–24 months for this equipment class — confirm the term, the parts covered and the battery position at quotation.