WO2013107866A1 - Attelle - Google Patents

Attelle Download PDF

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Publication number
WO2013107866A1
WO2013107866A1 PCT/EP2013/050951 EP2013050951W WO2013107866A1 WO 2013107866 A1 WO2013107866 A1 WO 2013107866A1 EP 2013050951 W EP2013050951 W EP 2013050951W WO 2013107866 A1 WO2013107866 A1 WO 2013107866A1
Authority
WO
WIPO (PCT)
Prior art keywords
splint
proximal
long side
accordance
short side
Prior art date
Application number
PCT/EP2013/050951
Other languages
English (en)
Inventor
Andreas Lundin
Anders Erik WESTERMARK
Richard MARSELL
Original Assignee
Novortex Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Novortex Ab filed Critical Novortex Ab
Priority to EP13701036.9A priority Critical patent/EP2804569A1/fr
Publication of WO2013107866A1 publication Critical patent/WO2013107866A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/0102—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations
    • A61F5/0104—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations without articulation
    • A61F5/0106—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations without articulation for the knees

Definitions

  • the present invention relates to splints, especially splints intended to at least temporarily immobilise the bones on either side of an elbow or ankle joint or the like.
  • Cuts can be made along the score lines in order to adapt the splint for use on different parts of the human body.
  • a problem with this device is that it is difficult for the unskilled user to determine which cuts should be made in order to adapt the device for a specific injury.
  • a further problem is that because each of the multiplicity of unused score lines locally reduces the thickness of the pliant material then they each form a line of weakness which can reduce the stiffness of the splint and which can lead to it changing shape during use.
  • US4209011 describes a splint made from a flat piece of corrugated plastic material which is provided with longitudinal, parallel, scored fold lines which enable it to be folded to form an open quadratic cross-sectioned splint.
  • a problem with this device is that it can only be folded easily along the score lines and thus is only suitable for splinting a limited size of limb.
  • the present invention relates to a splint suitable for immobilising the bones on either side of an elbow or ankle joint.
  • the splint comprises a shell and a liner.
  • the splint has two parts joined by a hinge as described in more detail below - a main body which is intended to immobilise the part of the limb above the joint, i.e. the upper arm or calf and a minor body which is intended to immobilise the part of the limb below the joint, i.e. the lower arm or foot.
  • the shell is made of pliable material which lacks score lines in the major body and which is of a thickness and stiffness which, while being pliable enough to be wrapped around a limb, is also rigid enough to provide adequate support to the limb.
  • the shell is preferably in the form of a substantially flat piece of material, such as a polymer material, for example PET.
  • the shell is made of a single piece of material.
  • the liner may be releasably attachable to the shell or it may be permanently attached to the shell.
  • it is in the form of a comfort layer made of resilient material, such as expanded polymer foam which can grip the limb while avoiding exerting high point loads on the limb.
  • the shell is in the form of an elongated main body provided with laterally projecting fastening tabs on one or more of its long sides which main body is pliant enough to surround a limb on one side of a joint, for example an upper arm or calf; and a second elongated part projecting from a short side of the main body, which minor body is provided with at least one laterally projecting tab, the connection between the main body and the minor body being pliant enough so that it can act as a hinge so that the minor body can be bent out of the plane of the main body in order to surround a limb on the other side of the joint, for example a foot or lower arm.
  • the main body of the shell has no score lines which it can be folded along - instead due to its inherent pliability it can bent around the limb being treated.
  • Figure la shows a plan view of the interior surface of a splint 1 in accordance with an embodiment of the present invention
  • figure lb) shows a lateral view of the splint
  • figure lc) shows a plan view of the exterior surface of the splint.
  • Figure 2a shows a plan view of the interior surface of a shell for a splint in accordance with an embodiment of the present invention and figure 2b) shows a lateral view of the shell.
  • Figure 3 a) shows a perspective view of the interior of the splint of figure 1 and figure 3b) shows a perspective view of the exterior of the splint of figure 1.
  • Figure 4 a) shows a plan view of a shell according to a second embodiment of the invention and figure 4b) shows a lateral view of the shell.
  • Figures 5 a) and 5b) show plan and lateral views of a liner in accordance with a second embodiment of the present invention.
  • Figure 5 c) shows a perspective view of the liner and figure 5d) shows a plan view corresponding to that of figure 5 c).
  • Figure 6a shows an exploded perspective view of a splint comprising shell and liner according to the second embodiment of the invention
  • figure 6b) shows a plan view of the interior surface of the splint
  • figure 6c) shows a plan view of the exterior surface of the splint.
  • a first embodiment according to the present invention of a splint 1 comprises a shell 2 and a liner 4 attached to the inner surface 6 of the shell.
  • Liner 4 can be attached to the shell by any suitable attaching means such by adhesive, by double- sided tape or mechanically.
  • the attaching means may allow the liner to be removed, for example by being made of a hook and loop type fastener or non-setting adhesive, etc. or the attaching means may form a permanent attachment, for example by being made of a setting adhesive or non-releasable fittings such as rivets, bonding, laminating, etc.
  • Shell 2 is formed from a pliable, shape-stable material.
  • shape-stable means that the material can be bent or rolled by hand around a limb without being permanently deformed and which preferably is sufficiently elastic that it returns to its original shape when released.
  • a suitable material for the shell is a polymer, preferably PET (polyethylene terephthalate), in the form of a substantially flat homogenous sheet with a constant thickness t of preferably 0.4 to 3 mm, more preferably 0.5 to 1.5 mm and most preferably 0.8 to 1.4 mm. Material in this range of thicknesses is sufficiently flexible to be rolled around a limb by hand but is sufficiently strong so that it does not stretch during this operation.
  • a homogenous sheet of material of constant thickness means that it can be bent evenly around a limb unlike scored material or material of varying thickness which bend along the score line or the interface between material of varying thickness and therefore may not fit the limb closely.
  • the material has a tensile strength at yield of 40-60 MPa, elongation at break of greater than 30%, tensile modulus of elasticity of greater than 1.5 GPa (all measured using ISO 527), flexural strength of greater than 60 MPa (measured using ISP 178) and Charpy notched impact strength of greater than 5 kj/m2 (measured using ISO 179).
  • a suitable material is glycol-modified polyethylene terephthalate PET-G sheet.
  • Liner 4 is formed from a resilient, compressible foam material and is intended to provide comfortable support for a limb.
  • the foam material must be sufficiently compressible so that it can be compressed to conform to the shape of a limb that it is in contact with without exerting an uncomfortable force on the limb, while at the same time being hard enough to prevent itself from being squashed flat under load which would lead to it undesirably directly transmitting transient forces from the shell to the limb.
  • suitable foam materials are: high resilience foam, polyether foam and visco-elastic foam (which self-adjusts to the body's individual contours to reduce pressure on sensitive areas of the body).
  • the foam has an indentation load deflection according to ISO 2439 B greater or equal to 80 N and less than or equal to 200 N.
  • a comfort-enhancing means such as a surface treatment or coating which is suitable for skin contact and reduces the likelihood of patient discomfort or irritation.
  • a coating could be a textile such as velour laminated to the foam material or a loop material glued to the foam material or another woven or non-woven textile, or a coating such as a silicone elastomer or other elastomer or a polymer.
  • the liner is provided on one major surface with areas of loop material which form part of the attaching means which allow it to be attached to the shell while the opposite surface is provided with a textile comfort-enhancing means.
  • the liner is provided on one major surface with areas of loop material which form part of the attaching means which allow it to be attached to the shell while the opposite surface is provided with an elastomer or polymer comfort-enhancing means.
  • liner 4 has a thickness T which is between 5 mm and 45 mm, more preferably between 10 and 40 mm and most preferably between 20 mm and 35 mm. In most cases it is preferable that the thickness T is substantially constant over the shell.
  • the use of a constant thickness of liner material means that when the splint is bent around a limb it will tend to form a trough with a rounded cross-section which conforms well to the shape of the limb.
  • Figure 2a shows a plan view of the inner surface 6 of the shell 2 according to the embodiment of the invention shown in figures la) to lc) and figure 2b) shows a lateral view of the shell.
  • Shell 2 comprises an elongated main body 3 joined by an intermediate strip 55 to a minor body 33.
  • Main body 3 has a proximal end 5 and a distal end 7. These proximal and distal ends are separated by a first longitudinally-extending long side 9 and a second longitudinally-extending long side 11.
  • the proximal end 13 of the first long side and the proximal end 15 of the second long side are separated by a transversely-extending proximal short side 17.
  • the distal end 19 of the first long side and the distal end 21 of the second long side are separated by a transversely-extending distal short side 23.
  • the minor body 33 has a proximal end 35 and a distal end 37.
  • the proximal and distal ends are separated by a first longitudinally-extending long side 39 and a second longitudinally- extending long side 41.
  • the proximal end 43 of said first long side and the proximal end 45 of second long side are separated by a transversely-extending proximal short side 47.
  • the distal end 49 of said first long side and the distal end 51 of second long side are separated by a transversely-extending distal short side 53.
  • the transverse distal short side 23 of the main body 3 is connected to the transverse proximal short side 47 of the minor body by the intermediate strip 55 which has a width Wl which is less than the width W2 of the distal short side 23 of the main body 3 and also less than the width W3 of the proximal short side 47 of the minor body.
  • Wl is between 4 and 10 cm
  • W2 is between 10 and 25 cm
  • W3 is between 15 and 35 cm.
  • the width W4 of the proximal short side of main body 3 is greater than W2 and is between 15 and 40 cm in order to accommodate the part of a limb held at the proximal end of the major body which usually would have a larger circumference than the part of the limb held in the distal end of the major body.
  • Preferably intermediate strip 55 is centralised on the longitudinal axis of the shell.
  • Preferably intermediate strip 55 extends between 0.8 and 3 cm in the longitudinal direction, more preferably between 1.0 and 2.5 cm in the longitudinal direction and even more preferably between 1.1 and 1.5 cm in the longitudinal direction.
  • the intermediate strip has a width which is less than that of the short sides of the main body and minor body that it is joined to, it acts as a hinge and makes it easier for a user to bend the minor body up out of the plane of the major body. This is necessary when, for example, the major body is used around the upper arm (or calf) or a patient and the minor body is used around the lower arm (or foot) of the patient.
  • the intermediate strip then acts as a hinge between the major and minor bodies and is intended to be positioned on the outside of the joint, for example, at, or near to, the point of the elbow (or heel).
  • the main body, minor body and intermediate strip are integrally formed from a single piece of material. This can be achieved by cutting or stamping or the like the shell from a sheet of material. This ensures that there are no joining seams which would harm a patient or collect contaminants and that the material properties of the shell are constant which makes it easier for the user of the splint to anticipate what forces are needed to be applied to bend the splint around a limb.
  • the material is a sheet of polymer, especially transparent polymer which may facilitate the detection of leaking body fluids inside the splint.
  • the polymer is PET.
  • a sheet of polymer provides a smooth surface which is not only easy to clean but which also can be written on, for example by a doctor who wishes to write down patient notes or instructions.
  • the materials used in the splint are X-ray transparent.
  • the fastening means comprises a plurality, preferably three, of pairs of opposed tabs (first pair tabs TIA, TIB; second pair of tabs T2A, T2B; third pair of tabs T3A, T3B) projecting laterally from the long side of the major body, which opposed tabs can be brought into locking engagement with each other.
  • Each tab may be integrally formed with the respective long side of the major body and provided with fastening means, or they may be in the form of straps or pieces of material attached to the long side of the major body - either directly or as extensions to tabs projecting from the long side - as can be seen in figure 3a) and figure 3b).
  • the minor body is provided with at least one set of fastening means, such as an area on a laterally extending tab tlB formed by a laterally-extending portion 57 of the liner and an opposed co-operating area tl A on the exterior surface of the minor body.
  • one of each pair of tabs, or one of each tab and its opposed cooperating area is provided on its outer surface with an area of hook material (HI; H2; H3; hi) and the other tab or opposed area of the pair is provided on its inner surface with an area of cooperating loop material (LI; L2; L3; 11).
  • the tabs or opposed areas may be attached directly to the major body or minor body or the tabs may be attached to the liner. During use the major body and the minor body can be bent round a limb and the opposed tabs overlapped and fastened to each other, the hooks and loops or other fastening means cooperating to form a firm but also releasable join.
  • releasable angle-maintaining fastening means are provided on suitable portions of the distal end of major body 3 and the proximal end of minor body 33.
  • suitable portions of the distal end of major body 3 and the proximal end of minor body 33 are provided with hook (or loop) material (El A, E1B) and at least part of the overlapping interior surface of the minor body is provided with cooperating loop (or hook) material (il A; ilB), or vice versa.
  • the major body and minor body When the major body and minor body lack score lines or other predetermined lines of weakness then when they are rolled around a limb they will naturally be inclined to form a trough with a rounded cross-sectional profile which corresponds well to the shape of an upper or lower arm or calf. This reduces the risk of areas of high pressure occurring on the limb inside the trough.
  • the minor body 33 when a splint in accordance with the present invention is to be used on a foot, which has a less rounded underside than a lower arm, then the minor body 33 (which is intended to be fitted around the foot) may be provided with longitudinally extending lines of weakness such as the lines of perforations 59A, 59B shown in fig.
  • These perforated lines preferably extend from, or from the vicinity of, the outer edges of the intermediate strip 55 to the distal end 37 of the minor body. These perforated lines are preferably arranged symmetrically about the longitudinal axis of the minor body and preferably are arranged at an angle between 5° and 15° to the longitudinal axis so that they are closer together at the intermediate strip
  • major body 3 may be provided with longitudinally extending slits 61 A, 6 IB which slits preferably extend from, or from the vicinity of, the outer edges of the intermediate strip 55 towards the proximal end of major body. These slits preferably should extend only a distance which the same as or less than 0.5 x (W3-W1). In order to prevent the slits tearing during use they can each finish in a respective stress-relieving round hole 63, 65.
  • liner 4 preferably extends outside the area bounded by the long and short sides of major body 3 by at least 5 mm in order to provide patient comfort by ensuring that the relatively stiff major body 3 cannot come into direct contact with the limb being splinted.
  • Figure 4a shows a plan view of the inner surface 106 of the shell 102 according to a second embodiment of the invention and figure 4b) shows a lateral view of the shell.
  • Shell 102 comprises an elongated main body 103 joined by an intermediate strip 155 to a minor body 133.
  • the minor body 133 has a proximal end 135 and a distal end 137.
  • the distal end 137 has a transversely-extending distal short side 153.
  • Short side 153 is provided with a projecting stiffening surface 175 which extends longitudinally for a distance which is preferably between 0.5 cm and 1.5 cm and which extends transversely for a distance which is from 5 cm to 15 cm for a splint intended to support an ankle joint, and 3 cm to 12 cm for a splint intended to support an elbow joint.
  • stiffening surface 175 can be bent along a line connecting the two notches to an angle which is 90° or more out of the plane of the minor body in order to impart increased rigidity to the distal end of the minor body.
  • Such a stiffening surface can be applied to any embodiment of a shell according to the present invention, including that shown in figures la) to 3b).
  • the fastening means used to fasten the splint around the limb include two pairs of abbreviated laterally projecting tabs on the shell tabs alA alB, a2A, a2B to which flexible tab extensions TE1A, TE1B, TE2A, TE2B can be attached and additionally a pair of flexible tabs T3A and T3B which are attached directly to the shell without any intermediate laterally projecting tabs.
  • the minor body is provided with at least one set of fastening means, such as an area on a laterally extending tab tlB and an opposed co-operating area tl A on the exterior surface of the minor body.
  • Such fastening means used to fasten the splint around the limb can be applied to any embodiment of a shell according to the present invention and can replace those described in connection with the embodiment of the invention described in figures la) to 3 c).
  • releasable angle-maintaining fastening means are provided on suitable portions of the distal end of the major body and the proximal end of the minor body.
  • suitable portions of the distal end of the major body and the proximal end of the minor body are provided with hook (or loop) material (El A, E1B) and at least part of the overlapping interior surface of the minor body is provided with cooperating loop (or hook) material (il A; ilB), or vice versa.
  • Flexible tabs and flexible tab extensions can be made of flexible material provided with mutually cooperating fastening material, for example straps provided with, or made of, suitably arranged loop and hook material, or straps provided with holes and buckles or the like.
  • Figures 5a) and 5b) show plan and lateral views of a foam liner 204 of thickness T in accordance with a second embodiment of the present invention.
  • Liner 204 is preferably made of the same materials as described above for the first embodiment of a liner and preferably for ease of manufacture has a constant thickness T.
  • Figure 5 c) shows a perspective view of the liner with two folded tabs (described below) and figure 5d) shows a plan view corresponding to that of figure 5c).
  • Liner 204 is intended to cover the inner surface 106 of the shell 102 (shown in figures 4a) and 4b)) which is intended to face the limb being immobilised and has a shape which corresponds mainly to that of the shell but which has some differences are described below.
  • liner 204 is wider and longer than shell 102 in order to ensure that during use the edges of relatively stiff shell 102 cannot come into direct contact with the limb being splinted.
  • the patient-facing surface 206 of liner 204 is provided with a comfort-enhancing means such as a surface treatment or coating 208 which is suitable for skin contact and reduces the likelihood of patient discomfort or irritation.
  • extra padding material is often needed in order to fill the space between the ankle, which is relatively thin compared to the calf, and the splint. This can be achieved by providing loose extra padding material in the vicinity of the ankle.
  • the extra padding material can be provided on the splint itself. Preferably it is formed in a single unit together with the liner. In the example of a liner shown in figures 5a) to 5d), extra padding material is provided in two positions, namely as foam tab extension FT3A and FT3B, however it is conceivable to provide it at only one position. Using two opposing positions for the extra padding makes it easier to provide symmetrical padding of the limb.
  • the main body of the liner each of which extends a distance which is at least 5 cm and less than 30 cm from side of the main body.
  • the total extension of the two foam tab extension FT3A and FT3B for an ankle joint splint is more than 20 cm and less than 40 cm.
  • the foam tab extensions FT3A and FT3B can be folded back on themselves as shown in figures 5 c) and 5d) to provide extra padding in the inside of the splint. If necessary, during use excess padding can be cut off the foam tab extension.
  • the outer surface 210 of the liner at least on the major surface of the foam tab extensions FT3A and FT3B which may be folded towards the patient, may be also be provided with a comfort-enhancing means such as a surface treatment or coating 208' which is suitable for skin contact and reduces the likelihood of patient discomfort or irritation.
  • a comfort-enhancing means such as a surface treatment or coating 208' which is suitable for skin contact and reduces the likelihood of patient discomfort or irritation.
  • Such extra padding may be provided in any embodiment of a splint according to the present invention.
  • Figures 6a) to 6c) show a splint 301 formed by a shell 102 and liner 204 according to the second embodiment of the invention.
  • Figure 6a) shows an exploded view of the splint
  • figure 6b) shows a plan view of the interior surface of the splint
  • figure 6c) shows a plan view of the exterior surface of the splint.
  • the foam tab extensions have been folded towards the shell so that in the case that the liner has been treated on only one side with comfort-enhancing material 208 then it is this material which contacts the patient.
  • hook and loop fasteners which can be of the type known as Velcro ®
  • fasteners are releasable and reusable, for example straps and buckles or clips, or tape, or safety pins and bandages. It is also possible to use single-use or fasteners such as adhesive tape.
  • a splint in accordance with the present invention can be used as follows:
  • the injured limb is placed on the flat splint with the base of the heel or the point of the elbow at the junction of the intermediate strip and the distal end of the main body.
  • the long sides of the major body are folded up against the side of the calf or upper arm and the first and second pairs of tabs are fastened around the limb.
  • the minor body is folded up towards the foot or lower arm and retained against the major body at the desired angle by the angle maintaining fastening means.
  • the third pair of tabs on the major body are then fastened into position over the calf or upper arm before finally fastening the tabs on the minor body to each other around the foot or lower arm.

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  • Health & Medical Sciences (AREA)
  • Nursing (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

L'invention concerne une attelle pour supporter les os sur l'un et l'autre côté d'une articulation, telle qu'une articulation de cheville ou une articulation de coude. Cette attelle comprend une coque (2) et un revêtement (4), la coque comprenant un corps principal (3) et un corps secondaire (33), le corps principal (3) étant réuni audit corps secondaire par une bande intermédiaire (55) et ledit corps principal ayant une épaisseur sensiblement constante t.
PCT/EP2013/050951 2012-01-18 2013-01-18 Attelle WO2013107866A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13701036.9A EP2804569A1 (fr) 2012-01-18 2013-01-18 Attelle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1250026 2012-01-18
SE1250026-0 2012-01-18

Publications (1)

Publication Number Publication Date
WO2013107866A1 true WO2013107866A1 (fr) 2013-07-25

Family

ID=47603674

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/050951 WO2013107866A1 (fr) 2012-01-18 2013-01-18 Attelle

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EP (1) EP2804569A1 (fr)
WO (1) WO2013107866A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2409195A (en) 1943-06-22 1946-10-15 Walter J Crawford Surgical splint
US3938509A (en) * 1974-12-09 1976-02-17 Barber Lois M Hand splint
US4209011A (en) 1978-03-14 1980-06-24 Camelia Manufacturing Co. Ltd. Disposable splint
WO1994028830A1 (fr) * 1993-06-16 1994-12-22 Orthopedic Technology, Inc. Attelle de poignet
US20040138597A1 (en) * 2003-01-13 2004-07-15 Restorative Care Of America Dorsal blocking hand orthosis
WO2010103186A2 (fr) * 2009-03-11 2010-09-16 Onbone Oy Nouveaux matériaux

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2409195A (en) 1943-06-22 1946-10-15 Walter J Crawford Surgical splint
US3938509A (en) * 1974-12-09 1976-02-17 Barber Lois M Hand splint
US4209011A (en) 1978-03-14 1980-06-24 Camelia Manufacturing Co. Ltd. Disposable splint
WO1994028830A1 (fr) * 1993-06-16 1994-12-22 Orthopedic Technology, Inc. Attelle de poignet
US20040138597A1 (en) * 2003-01-13 2004-07-15 Restorative Care Of America Dorsal blocking hand orthosis
WO2010103186A2 (fr) * 2009-03-11 2010-09-16 Onbone Oy Nouveaux matériaux

Also Published As

Publication number Publication date
EP2804569A1 (fr) 2014-11-26

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