Wonderful CCAEH

The CCAEH belongs in prosthetic clinics, limb-fitting centres and rehabilitation units that look after adults with limb loss above the elbow. Its users are transhumeral wearers who want a mechanical arm with a working hand, and the prosthetists and technicians who fit, adjust and maintain it.

Because the hand, cable control and both rotating joints come as one prosthesis, the CCAEH suits services that want a single item to specify for an above-elbow case. A workshop can hold the three-finger and five-finger versions as two clear choices and match each wearer to one at assessment. The clinical team then spends the session on cable set-up, wear time and training.

In daily use, the cable-worked hand handles the grasp-and-release tasks that fill a day: carrying a bag, steadying a jar for the other hand to open, holding paper flat while writing, or gripping a handrail. Passive wrist rotation turns the hand to meet each object at a workable angle, and passive upper-arm rotation brings the hand in towards the body for eating or desk work, or out to the side for reaching.

Rehabilitation programmes can use the CCAEH from early training onwards. A mechanical hand gives clear feedback through the cable, which helps a new wearer link the control movement to what the fingers do. Therapists can practise pre-positioning drills with the wrist and upper arm before each grasp.

The 1.05 kg aluminium build suits wearers who will use the arm through a full working day, in offices, workshops, kitchens and around the home. With no batteries in the design, the arm also fits wearers who live or work far from a charging point or a service centre.

One item covers hand, wrist and upper arm

A single specification brings the hand, the cable control and both passive joints together. The prosthetist orders one code, CCAEH, and the arm reaches the clinic ready for fitting, with its hand and joints already matched to one another.

A mechanical arm with nothing to charge

Every movement of the CCAEH is driven mechanically, through the cable and the wearer's own positioning. The wearer can plan the day around tasks alone, and the clinic keeps its upkeep for this arm to mechanical parts.

Direct control through the cable

The hand's actions run through the cable, so the wearer feels a direct link between the control input and the fingers. That feedback helps new wearers learn the arm quickly and lets experienced ones judge grip by feel.

Finger count matched to the wearer

Three or five fingers are available. A clinician can choose a three-finger hand for a simple, open grasp or a five-finger hand where a fuller hand outline matters to the wearer.

The hand can be pointed before each grasp

Passive wrist rotation lets the wearer turn the hand to suit the object in front of them. Approaching a mug from the side or a sheet of paper from above becomes a matter of setting the wrist first.

Reach widened by upper-arm rotation

Turning the upper arm swings the forearm and hand inward or outward. The same arm can work close to the body at a table and then be swung out to reach for something placed to one side.

A mass sized for all-day wear

At 1.05 kg for the entire above-elbow limb, the CCAEH keeps its weight at a level the wearer can carry from morning to evening. Aluminium gives the structure its stiffness without adding bulk.

Upkeep focused on a few moving parts

The cable and the two passive joints are the moving parts that see daily use. Keeping a short list of wear points makes routine inspection quick for the clinical team at each review.

Above-elbow format

The prosthesis is designed for limb loss above the elbow. It carries the upper-arm section through to the hand, so it spans the full length a transhumeral wearer needs replaced.

Cable-controlled hand actions

Grasp and release are controlled by cable. The line carries the wearer's control input straight to the hand, keeping the operating principle simple to explain and to adjust.

Three-finger hand option

One version of the hand is built with three fingers. This layout gives a clear, open grasping shape for everyday holding tasks.

Five-finger hand option

The second version carries five fingers. Wearers who want a hand that follows the outline of a natural hand can be fitted with this layout.

Passive wrist rotation

The wrist joint rotates passively. Turned by the other hand or against a surface, it lets the hand be aimed at an object before the grip closes.

Passive upper-arm rotation

Rotation at the upper arm moves the forearm and hand around the arm's long axis. Inward rotation suits close work at the body's midline, and outward rotation opens reach to the side.

Aluminium structure

Aluminium forms the structure of the arm. The metal gives a light, stiff frame that stands up to the handling of daily wear.

1.05 kg total mass

The whole prosthesis weighs 1.05 kg, or 1,050 g. That figure includes the hand, the cable control and both rotating joints.

Fully mechanical design

Every function of the CCAEH is mechanical. With no electronic components on board, the arm keeps working wherever the wearer goes, with no power source involved.

Single item number

The complete arm carries the item number CCAEH. One code covers the hand, wrist and upper-arm assembly, which keeps records and reorders straightforward.

Prebuilt assembly

The hand, wrist and upper-arm section come together as one built prosthesis. The fitting session can open on the wearer's set-up with the arm already assembled.

Hand shaped for everyday grasping

As the cable moves the fingers, the hand closes around whatever it meets in daily tasks. Holding a bag, steadying a plate and pinning a page flat all fall within its everyday work.

The CCAEH suits prosthetic services that want an above-elbow arm they can specify as one item and fit without assembling parts. Its case rests on simplicity: a mechanical, cable-controlled hand with three or five fingers, passive rotation at the wrist and upper arm, and no battery to manage. That makes it a strong fit for transhumeral wearers who value a direct, felt link between control and grip, and for clinics that prefer a short list of moving parts to review. Wearers who spend long days on their feet benefit from the aluminium build, which brings the entire limb, hand to upper arm, to 1.05 kg.