Sale on Manual & Electric Hospital Beds - Starting from 25 September!

Home
Shop
Orthopaedic, Trauma & Prosthetics
Wonderful 4F33-AL

✓ Certified Professional Seller

Wonderful Orthopaedic, Trauma & Prosthetics

Wonderful 4F33-AL

Product Code: OTAP-PLAC-3039

Two fittings in one body, and the build height of one.

Stacking a tube clamp beneath a pyramid receiver costs vertical space twice. Combining both functions in a single machined body costs it once, which is what makes a constrained build possible. Listed on Medigear.uk for UK business buyers.

Sections

Prosthetic Components & Adaptors

Categories

Orthopaedic, Trauma & Prosthetics

Condition

New

Origin

China

Seller Type

Certified Professional Seller

CE & ISO Certified

Global Shipping

Supplier: Medigear

A modular limb is assembled from fittings that each do one job, and each one occupies vertical space whether it is doing that job or simply passing load through.

Consider a common arrangement. A pylon runs up from the foot. A tube clamp grips it. Above the clamp, a pyramid receiver provides the angular adjustment that alignment requires. Two separate fittings, bolted or clamped together, and their heights add. Where the space between socket and floor is generous, that is of no consequence. Where it is tight, as in a long residual limb or a knee disarticulation, those stacked millimetres are the difference between a build that assembles and one that does not.

A combined fitting removes that addition. One machined body carries the clamped bore at one end and the receiver at the other, so the two functions share a single envelope rather than occupying two. The saving is not the whole height of one component, since both functions still need material around them, but it removes the interface between them, the fixings that would have joined them, and the tolerance stack that comes with two parts instead of one.

There is a second benefit worth noting. Fewer components means fewer joints, and every joint in a prosthesis is a place where fixings can loosen, tolerance can accumulate and inspection is required. Consolidating two fittings into one reduces all three.

What the fitting does otherwise is familiar. The clamped end grips the pylon by friction as its slot closes under the pinch screw, with insertion depth setting limb length and rotation before tightening setting toe-out or toe-in. The receiver end accepts a pyramid and locks it with set screws bearing on its faces, which is where angular adjustment in the sagittal and coronal planes is established. Between them, the fitting carries both the length and the angle adjustments a limb needs.

That does mean two distinct torque specifications may apply. The clamp screw delivers the friction that holds the pylon. The receiver set screws hold the pyramid against its seat and resist the angular loads alignment places on it. They are different jobs with different figures, and both should come from the manufacturer's instructions rather than being assumed common.

Aluminium keeps the mass of a combined fitting down, which matters because consolidating two components into one body can otherwise concentrate weight at a single point in the build.

This is a component supplied for fitting within a prosthesis by a qualified prosthetist, who cuts the pylon, sets length, rotation and angular alignment, and tightens both sets of fixings to their specified torques. The manufacturer, configuration, bore, build height, rating, screw specifications and torques are provided by the seller at quotation, with UKCA or CE marking documentation, the declaration of conformity, instructions for use and warranty terms issued by the manufacturer or held by the seller.

Long residual limb transtibial fittings benefit most, since build height beneath the socket is limited.

Knee disarticulation fittings leave the least room of all, where consolidating two fittings into one can decide whether a build assembles.

Angular alignment in the sagittal and coronal planes is established at the receiver end of this fitting.

Limb length and toe-out are established at the clamped end through insertion depth and rotation.

Builds seeking fewer joints benefit from consolidation, since each joint is a place requiring inspection over time.

Weight-sensitive builds are served by aluminium, which keeps the mass of a combined fitting down.

Clinics holding stock need the bore diameter matched to the pylons they routinely fit, since it is not stated in the reference.

Height Counted Once, Not Twice

One body carrying both functions avoids the added height of a separate clamp and receiver stacked together.

One Interface Fewer

Consolidation removes the joint between two fittings, along with the fixings and tolerance stack that come with it.

Fewer Places to Loosen

Every joint in a limb is a place where fixings can work loose and inspection is required, and this arrangement has one less.

Length and Angle in One Fitting

The clamped end sets limb length and rotation while the receiver end sets angular alignment.

Adjustment Retained at Both Ends

Both the clamp and the receiver remain adjustable, so alignment can be revisited through rehabilitation.

Grip by Friction Across the Bore

The slot closes under the pinch screw, gripping the pylon over its full contact length.

Angular Adjustment Locked by Set Screws

The receiver holds a pyramid against its seat, resisting the angular loads alignment places on it.

Mass Kept Down at a Consolidated Point

Aluminium avoids concentrating weight where two components have become one.

Two Torque Figures Established

Clamp and receiver fixings do different jobs, and both specifications are obtained rather than assumed common.

Bore and Height Specified Explicitly

Because the reference states material only, both remaining variables are set out on the order.

Supply and Documentation Arranged

Medigear.uk can arrange supply, documentation and the provision of consumables.

Combined Clamp and Receiver Fitting

An aluminium body carrying a clamped tube bore at one end and a receiver at the other.

Item Reference: 4F33-AL

To be confirmed against the manufacturer's marking, noting that the code states material only.

Manufacturer

Wonderful Rehabilitation, to be confirmed at quotation.

Proximal Connection

Appears to be a pyramid receiver, with male or female configuration to be confirmed.

Receiver Set Screws

Number, size and torque confirmed at quotation.

Angular Adjustment Range

Confirmed at quotation.

Material

Aluminium, with the alloy to be confirmed.

Bore Diameter

Confirmed at quotation, as it is not stated in the reference.

Build Height

Confirmed at quotation.

Clamp Slot and Pinch Screw

Closing onto the pylon, with screw size and torque confirmed at quotation.

Minimum Tube Insertion Depth

Confirmed at quotation.

Maximum Body Weight

Confirmed at quotation.

Product Weight

Confirmed at quotation.

Compatible Pylons and Pyramid Components

Confirmed at quotation.

Relationship to the 4F21 Family

Confirmed at quotation.

UKCA or CE Marking and Declaration of Conformity

Issued by the manufacturer and requested from the seller at quotation.

Instructions for Use

Provided by the seller at quotation, and required before fitting.

Warranty Terms

Set by the seller at quotation.

The 4F33-AL is an aluminium fitting carrying a clamped tube bore at one end and a receiver at the other, doing in one body what a separate clamp and receiver would do in two. A modular limb is assembled from fittings that each occupy vertical space whether they are working or simply passing load through, and where a pylon, a clamp and a receiver stack up, their heights add. In a generous build that is immaterial; in a long residual limb or a knee disarticulation those millimetres decide whether the limb assembles at all. Combining the functions removes that addition, along with the interface between the two parts, the fixings that would have joined them and the tolerance stack of two components rather than one, and it leaves the build with one fewer joint to loosen and inspect. Otherwise the fitting behaves as expected: the clamped end grips the pylon by friction with insertion depth setting length and rotation setting toe-out, while the receiver end holds a pyramid and establishes angular alignment. Two torque figures may apply, and both should come from the manufacturer. Cutting, setting and tightening are the work of the prescribing prosthetist. Configuration, bore, build height, rating and torques are provided by the seller at quotation alongside UKCA or CE documentation. Medigear.uk lists the fitting for UK business buyers and can arrange supply, documentation and the provision of consumables. Enquire for a written quotation.

FAQ

Frequently Asked Questions

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

It is an aluminium clamp fitting with an integrated receiver at the proximal end, combining two functions in one machined body. The exact configuration is confirmed at quotation.

It removes the added height of stacking a separate clamp and receiver, along with the interface between them and the fixings that would have joined them.

Less than the full height of one component, since both functions still need material around them, but enough to matter where space between socket and floor is tight.

Long residual limb fittings and knee disarticulations, where the socket extends low and there is little room beneath it.

Fewer joints in the build, and so fewer places where fixings can loosen, tolerance can accumulate and inspection is needed.

It grips the pylon by friction as its slot closes under the pinch screw, with insertion depth setting limb length and rotation setting toe-out.

It accepts a pyramid and locks it with set screws bearing on its faces, which is where angular alignment is established.

Possibly. The clamp screw and the receiver set screws do different jobs, so both figures should be obtained rather than assumed common.

Confirmed at quotation, as the reference states material but not bore.

Confirmed at quotation, along with the compatible pyramid components.

A qualified prosthetist, who cuts the pylon, sets length, rotation and angular alignment and tightens both sets of fixings.