point designs Point Thumb User manual

Distributeur
Point Thumb
Instructions for Use

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use 3
Introduction
Thank you for choosing the Point Thumb and providing your client with an
eective and robust prosthetic nger solution.
Whether you are retrotting the Point Thumb into an existing prosthetic socket or
you are building a new prosthesis from the ground up, this guide will familiarize you
with the Point Thumb’s functionality and installation.
The installation of any Point Thumb should be performed exclusively by a licensed
prosthetist or technician. Point Thumbs are intended to be operated by a prosthesis
user following installation and setup. Any unauthorized handling or installation of a
Point Thumb could void their warranty.
Any questions? We are always happy to help. Call us or send us an e-mail.

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use4
This document provides information for the prosthetists who will be installing the
Point Thumb.
Refer to www.lothfabenim.nl to ensure you have the latest copy of this document.
Important Information
This symbol is used throughout the guide to indicate important cautionary
information. Text following this symbol should be read carefully.
Caution: Federal law restricts this device to sale by or on the order of a
prosthetist

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use 5
Intended Use
The Point Thumb system is to be used exclusively for external prosthetic ttings of
the upper limbs. It is intended to provide exion and extension at the metacarpal
phalangeal (MCP) joint of the thumb in order to generate stable hand grasps.
Indications
Users of the Point Thumb system will achieve the best clinical outcome if they have
thumb amputation at or near the MCP joint (slightly distal or proximal of the MCP
joint is acceptable).
Intended Patient Population
The Point Thumb is intended to be t on people with thumb amputations at or near
the metacarpal phalangeal (MCP) joint.
Important Information
Intended Users
The Point Thumb is to be installed into a prosthetic socket by a trained prosthetist,
and used by partial hand amputees. The Point Thumb system is compatible with
most prosthetic sockets, and is installed into the prosthetic socket by a trained
prosthetist or technician.
Contraindications
None known.

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use6

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use 7
Contents
1. Introduction to the Point Thumb ......................................................................................... 8
2. Component Description ...................................................................................................... 10
2.1 The Point Thumb ................................................................................................................ 10
2.2 Lamination Spacer ............................................................................................................. 10
2.3 Mounting Screws ............................................................................................................... 11
2.4 Mounting Bracket .............................................................................................................. 11
2.5 Alignment Tool ................................................................................................................... 12
2.6 Alignment Transfer Post ................................................................................................... 13
2.7 Alignment Transfer ............................................................................................................ 14
2.8 Fingertip Pads ..................................................................................................................... 16
2.9 Lateral Grip Pads ................................................................................................................ 16
2.10 Grip Band ............................................................................................................................ 16
3. Specications .......................................................................................................................... 17
4. Installation ............................................................................................................................... 18
4.1 Fingertip Pad Installation .................................................................................................. 18
4.2 Lateral Grip Pad Installation ............................................................................................. 20
4.3 Grip Band Installation ........................................................................................................ 21
4.4 Fingertip Pad Removal ...................................................................................................... 23
4.5 Lateral Grip Pad Removal .................................................................................................. 24
4.6 Grip Band Removal ............................................................................................................ 25
5. Using The Point Partial ......................................................................................................... 26
5.1 Positioning / Flexion .......................................................................................................... 26
5.2 Release / Extension ............................................................................................................ 26
6. Troubleshooting ..................................................................................................................... 28
7. Maintaining the Point Partial .............................................................................................. 29
7.1 Preventative Inspection .................................................................................................... 29
7.2 Maintenance ...................................................................................................................... 29
7.3 Disposal .............................................................................................................................. 29
7.4 Repairs, Returns + Warranty ............................................................................................. 29
8. Safety and Warnings ............................................................................................................. 30
9. Annex ......................................................................................................................................... 32
9.1 Description of Symbols from Product Label ................................................................... 32

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use8
Introduction to the Point Thumb
1
The Point Thumb is a passive (i.e. not powered) mechanical thumb for people
with thumb amputations. It features a ratcheting mechanism that enables one-
handed use and 11 distinct locking positions. The Point Thumb features integrated
compliant touchscreen compatible* ngertip pads for enhanced grip. The Point
Thumb is made from titanium for ample strength.
The Point Thumb can be exed and locked by applying a force to the dorsal side of
the ngertip. This force can be applied by the contralateral limb or by an opposing
surface (e.g., leg, table, desk, wall, chair, etc.).
*Touchscreen compatibility is not guaranteed, but has been tested on common iOS, Android, and Windows devices using standard socket
material (silicone inner liner with carbon ber outer shell)

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use 9
The Point Thumb can be extended in one of two ways:
1. depressing the push button, or
2. fully exing the nger to engage the auto spring-back feature.
A single Point Thumb can be integrated into a prosthetic socket using the mounting
kit, which includes a mounting bracket, lamination spacer, alignment tool, alignment
transfer post and mounting screws.
Introduction to the Point Thumb
1

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use10
Component Description
2
The Point Thumb comes assembled as one unit. The Point Thumb is comprised of a
curved knuckle track, proximal phalanx, distal phalanx, a release button, grip band,
ngertip pad, lateral grip pad and several other internal parts. The curved knuckle
track has 4 mounting holes.
2.1 The Point Thumb
The lamination spacer is a curved
component with mounting holes and a
square alignment tool mounting area for
use during the lamination process.
2.2 Lamination Spacer

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use 11
Torx® mounting screws (M2 x 5 mm) are provided for
attaching the lamination spacer to the bracket during the
lamination process and for mounting the thumb to the
bracket. 8 screws are supplied with each Point Thumb.
2.3 Mounting Screws
Component Description
2
2.4 Mounting Bracket
The mounting bracket is a single part comprised of a mounting area and 4 mounting
holes. The mounting bracket is designed to be symmetric for bilateral use, i.e. it can
be mounted on both a left and right hand in the same orientation.

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use12
The alignment tool is an accessory designed to
aid in the alignment of a Point Thumb during
fabrication. The alignment tool should be used in
combination with the lamination spacer. When
inserted into the square mounting hole on top of
the lamination spacer and then bolted onto the
mounting bracket, the alignment tool represents
the position of the Point Thumb throughout its
entire range of motion. While initial alignment
can be performed using the alignment tool, it is
always recommended to attach the Point Thumb
to the bracket prior to denitive fabrication to
verify alignment and function.
Component Description
2
2.5 Alignment Tool

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use 13
The alignment transfer post is an accessory designed to aid
in the transfer of a Point Thumb from a diagnostic socket
to a denitive socket while maintaining alignment. The
alignment transfer post should be used in combination
with the lamination spacer. The alignment transfer
post is made from 1/4” square aluminum with an M2
threaded hole on one end. To use, insert the end with
the threaded hole into the square mounting hole on the
lamination spacer. Secure the alignment transfer post to
the lamination spacer by inserting an M2x5mm screw from
the underside of the lamination spacer. Once alignment
of the bracket is achieved on the diagnostic socket, bolt
the alignment transfer post/lamination spacer assembly
to the bracket. Place the diagnostic socket assembly into
a vertical alignment transfer jig (not provided), and plant
the alignment transfer post into a container (e.g. cup,
bowl, bucket, etc.) of plaster. Be sure to secure the plaster
container so that it does not move. Once the plaster has
hardened, separate the bracket from the diagnostic socket,
raise the vertical alignment jig, remove the diagnostic
socket from the mold, and replace with the initial layup of
the denitive socket. Lower the vertical alignment transfer
jig, and then tack the bracket to the denitive socket. At
this point, the alignment should be transferred, and nal
lamination can be performed.
The alignment transfer post should be used when
fabricating both a diagnostic and denitive socket, where
transfer of the Point Thumb while maintaining alignment
is necessary. This accessory is not needed if performing
a direct to denitive fabrication, where alignment is
performed on the denitive socket.
2.6 Alignment Transfer Post
Component Description
2

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use14
Component Description
2
2.7 Alignment Transfer

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use 15
Component Description
2

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use16
The Point Thumb features integrated compliant
touchscreen compatible* ngertip pads for
enhanced grip. Each Point Thumb comes with
one preinstalled ngertip pad, 5 replacement
pads, and an installation tool. Additional
replacement pads can be acquired by contacting
[email protected]
Component Description
2
2.8 Fingertip Pads
The Point Thumb comes with lateral grip pads to
be installed after socket fabrication and nal digit
mounting. The lateral grip pads are intended for
contact with the index nger joints to improve
lateral grip. Ten lateral grip pads and a surface
preparatory wipe are included with each order.
2.9 Lateral Grip Pads
*Touchscreen compatibility is not guaranteed, but has been tested on common iOS, Android, and Windows devices using standard socket
material (silicone inner liner with carbon ber outer shell)
The Point Thumb comes with a grip band
installed. The grip band is intended for contact
with the surface of an object to improve grip.
Five grip extra grip bands are included with each
Point Thumb.
2.10 Grip Band

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use 17
3Specications
Material Titanium
Expected service life 3 years
Rated pinch grip strength 667 N (150 lbf)
Rated hook grip strength 667 N (150 lbf)
Rated tear out strength 1334 N (300 lbf)

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use18
Installation
4
4.1 Fingertip Pad Installation
The Fingertip Pad will have either 2
holes (for 73mm thumb) or 1 hole (for
59mm and 66mm thumb), and the distal
phalange of the Point Thumb will have a
corresponding number of posts.
1. Press the pad down onto the post(s) so that it seats into the hole(s) in the pad.
Start by pressing on the distal end of the pad and work your way proximal.
Maintain pressure on top of the pad as you move to Step 2.

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use 19
2. With the pad mostly seated onto the post(s), use the Installation Tool to press
the edges of the pad under the lip of the distal phalange. Start this process
at the proximal end and then work your way distal. Make sure to maintain
pressure on the top of the pad during this process.
Installation
4
3. With the edges pressed in, apply
pressure to the top of the pad and
rock back and forth gently to help
make sure the pad is fully seated. If
the pad looks to be bulging out still,
repeat Step 2.

EN
Point Thumb van Point Designs, distributeur Loth Fabenim B.V.
Point Thumb Instructions for Use20
4.2 Lateral Grip Pad Installation
The Lateral Grip Pads come in a pack of 10
adhered to a polymer liner. Only 1 pad is
needed as it is only installed on the lateral
side of the thumb adjacent to the index
nger.
1. Clean the brass Chicago Bolt with
the alcohol wipe (included).
2. Remove the Lateral Grip Pad from
the backing
Installation
4