DE7918987U1 - Dynamic hand orthosis - Google Patents

Description

• ι ι ι I «· '*

Bernhard Weckenmann 7500 Karlsruhe 21

Gerstenstrasse 11th

Dynamic hand orthosis

Description:

The invention relates to a hand orthosis for use as a correction and exercise orthosis for misalignment of the fingers both in the sense a flexion as well as axial deviations in the sense of hand scoliosis in rheumatic diseases; consisting of a Forearm shell (2), a metacarpal molding (1), a perforated correction plate (7), special correction cables (8) and the corresponding Rail connections (3-6)

Over the past few years, the requirements for corrective hand orthoses have changed significantly. While earlier stare Quengelschienen with rigid or rigid-adjustable elements Corrected misalignments and then fixed the fingers in the corrected position, applied, dynamic hand orthotics are now used, which enable mobility in the corrective position is required. The dynamic constructions known since then show still have significant disadvantages. The finger loops are made of leather with attached elastic bands, which are usually difficult to adjust are; or there are still leather button straps attached * which results in inelastic zones at the correction stretch, which does not adequately meet the requirements of the dyasch. Further In the previous designs, both directions of pull and correction forces of the two correction levels (e.g. rheumatic Hand scoliosis in the sense of correcting ulnar deviation and exercising ««? Flexion - Sttensioa of the fingers) merged together, so that both cannot be regulated independently of one another; the trains for all fingers are also directed to a central point, so that

the corrective effect not for each finger individually and independently can be adjusted. The leather finger loops resting on the skin are also questionable for hygienic reasons.

The invention is based on the object of providing a hand orthosis of the ,, to show the type described at the beginning, which on the one hand corrects misalignments, but does not significantly improve the mobility of the fingers and their corrective effect separately in the sense of extension - flexion on the one hand and in the sense of correcting the short deviation on the other hand is separately adjustable for each finger. At the same time, the metacarpal, which in many cases deviates radially be brought into normal position. Furthermore, the hand orthotic should Can also be used when the fingers are bent without lateral deviation be.

The problem was solved by the invention in that first special finger loops with reins (8) made of highly elastic, skin-friendly material and hygienically perfect plastic (Vulkollan) were developed. They are made in one piece, with the front part, approx. 15 mm wide, serves as a finger loop (13), followed by the middle, narrower and thus softer elastic Rein part (14) on and on the button strap (15) with the calibration of the tensile force by hanging in a corresponding Can vary the pad button.

Because the direction of pull is directed upwards from the fingers approximately at right angles should be, but the elastic rein should run parallel to the forearm - hand axis, a special correction was made. "tochplatte (7), through which the reins are passed and thereby deflected at right angles. Slides through the cast coating the elastic rein through the perforated plate, which creates an external gives a softer pull that is gentle on the finger joints, without the need for a large distance between the perforated plate and the finger ist = Furthermore, the perforated correction plate is used for relieving the egg the lateral corrective effect in the case of lateral deviation of the fingers. The basic setting is made by the asymmetrical offset in radial

Direction given when making the orthosis; the fine adjustment is achieved by threading it into the different bores · This allows the lateral correction effect largely independent of the vertical tensile force caused by the different buttoning of the button strap is adjustable, achieved. At the same time, each finger also works individually and can be adjusted completely independently of the other fingers.

As a starting point for the finger correction, a large-scale basic application in the area of the metacarpal and forearm is necessary * The difficult anatomical conditions in hands with rheumatoid arthritis (considerable soft tissue atrophy) make large contact surfaces necessary. This task is taken over by the shaped metacarpal part (1), which rests dorsally to the metacarpal and extends into the palm of the hand with a narrow web and is provided with a flat contact with the ball of the thumb (11). The forearm shell (2) is also laid out over a large area and the edge is designed asymmetrically. De? The ulnar band is made to encompass the distal half and the radial edge in the proximal half. This design, together with the ball of the thumb of the metacarpal molding and the splint joint (k) with the corresponding correction (9), results in an erection of the cadial deviation of the metacarpal according to the three-point principle.

In a further useful embodiment of the invention, a splint with an elastic loop that encompasses the thumb is attached to the ball of the thumb. So Vann, a deformity of the thumb to be eliminated.

The forearm shell and the metacarpal molded part are used for better wearing comfort perforated, also to prevent additional perspiration and to ensure ventilation of the underlying skin. Padding with skin-friendly foam or lambskin prevents pressure points. Because of the often extreme anatomical In the case of rheumatic diseases, an individual production of the orthosis based on a plaster model is required.

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A further modification can be made when the wrist is fixed the invention can be dispensed with the articulated rail connection and the two molded parts are connected with a continuous rail. Or the plastic parts are made from one piece, so that a rail connection is not necessary.

'■ In a further useful embodiment of the invention, the

is used for flexion contractures of the finger joints

/ | the perforated correction plate is not offset but symmetrically above the

Hand placed on the movable abduction-adduction wrist

can be dispensed with. Should only the metatarsophalangeal joints be extended the perforated grain plate over the phalanxes

attached, the plastic shell then extends to the base joints, those starting from the basic members in this case

; ■ Finger loops exercise the extension pull. Shall the fingers

base and middle joints (PIP joints) are extended, ends the plastic shell is also attached to the basic geometry, but the perforated correction plate is attached over the middle links so that

Ί place the pile of fingers on the middle links, creating a

Extension of both the metacarpal and median joints results. However, if only the central joints are to be influenced, the

f Plastic shell, taking into account a slight flexion

passed over the gnond joints and ends at the middle joints, the perforated correction plate above the middle links acts then the middle joints are stretched through the finger loops.

The hand orthosis according to the invention is an extremely effective one and finely adjustable corrective and exercise orthosis. The attached The drawing shows the orthosis for use with a tJlnar deviation of the long and eadial deviation of the metacarpal (Hand scoliosis). For a better overview, only one finger loop was shown instead of four finger loops.

Claims (12)

I1 I · · * «ill. . ί 1 Bernhard Weckennann 7500 Karlsruhe 21 Gerstenstr. 11 Dynamic Eandorthesis Protection Claims: 1. Hand orthosis for use as a correction and exercise orthosis Misalignments of the fingers both in terms of flexion and axial deviations in terms of hand scoliosis rheumatic diseases. Besiöiend from one? Forearm shell (2), a metacarpal mold (1), a perforated plate (7), special corrugation pulls (8) and the corresponding rail connections (3 - 6), characterized in that that the correction moves consist of a piece of Vulkollan and at the same time in its distal part as a finger loop (13), in the middle part as an elastic strap (14) and in the proximal part all j adjustable button strap (15) are used. 2. Hand orthosis according to claim 1, characterized in that on the Metacarpal molding (1) an upwardly angled rail (6) as Carrier for the perforated correction plate provided with a sliding coating (7) is attached and the perforated correction plate is symmetrical is offset radially over the hand. 3. Hand orthosis according to claim 2, characterized in that the forearm shell (2) is designed asymmetrically by placing the ulnar margin in the distal half and the radial edge in the proximal half is shaped further encompassing. k, k. Hand orthosis according to Claim 3, characterized in that the molded metacarpal part and forearm shell are connected to a spring steel joint splint (3-5) for the abduction and adduction movement. 5. Hand orthosis according to claim k, characterized in that the joint splint is made of plastic and is movable in all planes. 6. Hand orthosis according to claim k or f? characterized in that an elastic, adjustable correction strap (9) is attached between the central hand molded part and the lower arm shell. 7. Hand orthosis according to Anspmch k or 5, characterized in that a splint on the ball of the thumb of the metacarpal molding (11) with elastic zu, g is attached for thumb correction. 8. 8 hand orthosis according to claim 2, characterized in that the Hittelhanäformteil and the TJnterarniöchale from one the ligament joint overarching molding exist. 9. Hand orthosis according to claim 8, characterized in that the Correction perforated plate is attached symmetrically over the hand. 10. Hand orthosis according to claim 8 or 9, characterized in that a finger base peg support is attached to the metacarpal molding. 11. Hand orthosis according to claim 1 or 8, characterized in that the molded metacarpal part and the forearm shell are made of plastic, are padded with foam and perforated throughout are. 12. Hand orthosis according to claim. 1 or 8 characterized in that the The metacarpals and the forearm shell are perforated and padded with lambskin.