Key Features of The Nexus Hand
COVVI has designed its prosthetic technology around the necessity of functionality and accessibility, for both clinicians and patients.
In order to achieve this, we have ensured our designs are world-leading in their capability, are personalisable to each and every user, can withstand the strength and speed pressures required of a hand for everyday life, and most importantly are easy to use.
In addition to the tough exterior materials (Silicone and High-Strength Polymers) used to protect the internal components, the strength and speed capabilities of the Nexus Hand are on par with market leaders within prosthetics. The digits of the Nexus Hand have been assembled entirely out of a combination of stainless steel and aluminium, building upon the lessons learned from COVVI’s predecessors in the industry.
By bringing our devices much more in line with the amount of endurance required for everyday use, we provide a much more useful experience for our users.
Ease Of Use
Having a bionic hand that works as close to a human one as possible goes a long way in making it easy to use, but the Nexus Hand also has a number of additional features that will tighten the bond you share with your device.
The Nexus Hand has been developed so that prosthetics users no longer need to compromise between dexterity and grip strength. The hand can also be charged quickly and efficiently via USB-C!
Passively Flexing Fingers and Thumb
There’s no need for external Bluetooth, gyro or RFID triggers with our Nexus Hand, as it is loaded with switching options to give users fast access to a multitude of grips. For example, a user could double-tap four fingers on the desk for quick access to a finger point grip for typing.
Our digits are spring-loaded to provide impact protection and reduce the likelihood of damage, as well as being manufactured from stainless steel and aluminium for increased strength and durability. The structure of the fingers and thumb compliment the embodiment of the hand, as it gives it an overall more natural look.
Integrated Flex Wrist
The Nexus Hand has a built-in flex wrist with a range of +/- 30° featuring a simple push/push lock. This operates using passive spring-loaded technology for natural and fluid usage, as well as helping to reduce strain on the user’s shoulder. This component is integrated with every size of the Nexus Hand.
The single-sided push/push locking mechanism gives quick access to three locked positions but can also quickly return to passive flex mode. This system works like a ballpoint pen – simple and quick. The free-flex capabilities also allow for more natural use without additional myo-inputs.
Intuitive Thumb Control
Our powered thumb grip and rotation has both novel and intuitive switching (tap left and the thumb moves left, tap right and the thumb moves right). Alternatively, the dynamic mode uses both thumb motors simultaneously which gives direct access to both opposed and unopposed grips.
We’ve designed the rotation pivot using 12.5mm stainless steel for increased strength, which is over twice as much as the Bebionic hand’s 6mm aluminium pivot! It also allows thumb rotation without inadvertent wrist rotation and reduces the frequency of repairs as the parts of more robust.
Powered rotation is also available and can be mapped to myo-inputs, which makes it an excellent option for bilateral users too.
Water & Dust Resistant (IP44) Gloves
The Nexus Glove is made from medical-grade silicone with a soft-touch coating and boasts thicker integrated fingertip pads, which improves the life of the glove. Our IP44 rating ensures that the hand is protected against foreign objects larger than 1mm (including wires, gravel etc) that could cause damage, as well as liquids to make it ‘splash proof’.
You can choose the style of your hand with our range of customisable polycarbonate covers, which not only provide another layer of protection for the Nexus Hand, but also increase its durability as they’re painted on the inside. Plus it makes the hand easier to clean as well!
Both the glove and covers are easily replaceable in a clinic, with the whole process being both quick and inexpensive.
Innovative Technical Support
COVVI is the first company in the industry to offer remote firmware updates, which can provide improvements, new features and bug fixes directly to the user’s hand without the need for them to return it back to us, or go to a clinician. Depending on the size of the update file, it generally takes about 15-20 minutes to perform a full update.
Users can also request specific features, which can be sent back to them as a custom firmware update.
The integrated and fully customisable e-paper screen allows direct communication between the Nexus Hand and the user by displaying important device information, such as the current grip pattern, battery life and system notifications. There is also vital diagnosis data for the clinician too – very useful for mode identification, training and fault diagnosis.
The e-ink display requires no power during normal use of the hand, and only a minimal amount of charge to switch between displays.