DE19529055A1 - Adaptor for use with prosthesis - have two circular plates with guides in them in which adjuster screws are located connected by coupling piece which when moved moves plates relative to each other. - Google Patents

Abstract

The adapter for use with a prosthesis has two planes of adjustment (10,11) made from a circular plate which each have an adjustment mechanism. Each plane of adjustment has a swallow tail guide (13) in which slots (14) are situated positioned by adjuster screws (16). The adjuster screws are connected to a coupling piece (15), which moves when the screws are turned. Between the two planes is an intermediate piece (20), with counter guides to the swallow tail guides. A circular hole (19) is located, at the cross over point of the two slots, which accepts the coupling piece. With the relative adjustment of the coupling piece, within either of the adjustment planes, the planes are moveable relative to each other. The achieved adjustment can be read from a scale.

Description

The invention relates to an adapter for Prothe sen according to the preamble of claim 1.

Prostheses are used in the fields of medicine det. The adaptation and is not without problems exact adjustment of prostheses that lost in place narrow limbs. This is particularly true right for thigh and lower leg prostheses. Be slight deviations from the usual Posi The prothe wearer felt extremely uncomfortable. Such deviations However, checks are often only made after the Prosthesis out. The resulting rework are extremely expensive on the one hand and we on the other against the given environmental conditions satisfying.

The invention is therefore based on the object infinitely adjustable adapter to create with its Help positioning and fine adjustment of the existing which prosthesis both when first putting on and possible with changes desired in the course of use is.

The solution is achieved with the help of claim 1.  

Advantageous further developments result from the sub claims.

The invention is described below with reference to the Drawing figures explained for example. Show it:

Fig. 1 is a plan view of a prosthesis adapter,

Fig. 2a shows a detailed view of the lower or upper dovetail guide of the adapter in plan view.

FIG. 2b shows a corresponding side view of the Dovetail guide,

Fig. 2c shows another side view of the swallow tail guide with graduation on the flattened part.

Fig. 3a shows a plan view of the intermediate piece between the two dovetail guides,

Figure 3b and 3c corresponding side views of the interim. Tee rule,

Fig. 3d is a side view of the circular cylindrical coupling piece and

Fig. 4 shows the basic construction of an element for changing the direction in addition to changing the support point according to FIG. 1 to 3.

In Fig. 1, a prosthesis adapter is shown, which is built up of two intersecting adjustment levels 10 and 11 . Each individual adjustment plane 10 , 11 consists of a preferably circular plate with dovetail guide 13 . The two adjustment levels 10 , 11 grip with their dovetail guides 13 in a corresponding counter profile of a common intermediate piece 20 .

The two adjustment levels 10 , 11 are basically constructed uniformly.

In the dovetail guides 13 are long holes 14 respectively provided on the one hand and the guide on the other hand, the movement limit of a coupling piece 15 are used. In the intermediate piece 20 is a bore 19 for receiving the coupling piece 15 in such a way that a relative movement thereof in the plane of the intermediate piece is excluded 20th

At the same time, the coupling piece engages through the elongated holes of the adjustment levels 10 and 11 lying one above the other. In the middle of the respective elongated holes 14 of the swallow tail guideways 13 , adjusting screws ben 16 are provided in the longitudinal direction and cooperate with a corresponding thread in the coupling piece 15 . When the set screws 16 are actuated, the coupling piece 15 is positioned relative to the respective adjustment plane 10 and 11 , and then, via this coupling piece 15 , the crossing adjustment plane 11 or 10 is moved in one direction or the other.

Since the coupling piece 15 is provided with corresponding threaded bores both in the first adjustment level 10 and in the second adjustment level 11 , it is penetrated at different heights by both adjusting screws ben 16 and can thus also both in the direction of the first adjusting screw 16 and in Direction of the second set screw 16 are moved forward or backward. So that the positions of the adjustment level 10 and 11 with the interposition of the coupling piece 15 in both directions positioning and adjustment bar. If the two adjustment directions are perpendicular to each other. The coupling piece in a given area can practically move arbitrarily within a coordinate cross and each position within the area can be exactly designated by coordinates. If one part of the prosthesis with one Verstellebe ne 10 and the other part of the prosthesis with the other adjustment plane 11 is firmly connected, the two parts of the prosthesis can be adjusted relative to each other within the predetermined area of the coordinate system.

If such an adapter comes from a waiter, for example thigh prosthesis used, the arrangement of the Thigh shaft in relation to the lower part of the The prosthesis so far forward or backward or to the left and adjusted to the right until the prosthesis wearer Feeling of an optimal assignment.

The preferably round plan parts of an adjustment level 10 and 11 , which can be moved relative to each other, have laterally parallel to the adjustment flats 17 such that the flattenings 17 both parts of an adjustment level 10 and 11 in this area a continuous Represent area.

It is advantageous to provide the flattened sections or flattenings 17 with a scaled division ( FIG. 2c) and thus to enable objective and documentable settings for the user or the adjuster. A vernier, as is known from sliding gauges, can also be used for fine adjustment.

The scaling can also be used for adjustable and document animal shift in relation to the knee pivot serve the load line. Because the safety factor at Knee joints through a displacement range of approx. 10 The technician has to be variable up to 15 mm with this system the possibility of knee security adjust and document if necessary. This is ins particularly with regard to any claims for damages of considerable importance.

Has the prosthesis wearer after a certain usage duration of the prosthesis, for example, the feeling that the Support point should be moved a little forward so the setting can be one, two or more Graduation marks of the scaling changed and the effect of the changes in daily use. If necessary, the adjustment would then be over to manufacture one or more units in addition or also attributed.

While using the two adjustment levels of the adapter the relative contact point of the two prosthesis parts zuei can be changed, allows on the top rer and / or lower level arranged additional Adapter a change in the direction of being connected to it those part of the prosthesis. This can be done, for example, via a known lockable ball joint in any position ter type. But it can also be a truncated cone or truncated pyramid-like part in a corresponding engage associated receiving opening, with a corresponding counterpart ensures that a such element does not come loose from the opening  can.

Conveniently, engages over for this purpose a box-like open at the bottom by a structure 25 inverted cone or truncated pyramid 26 (Fig. 4). The outer walls of this box-like structure 25 are penetrated by such inclined retaining or fixing screws 27, that these screws impinge substantially perpendicularly to the outer surfaces of the blunt cone or pyramid 26th The box-shaped structure 25 is supported on a part of a spherical surface 28 , so that it can be easily brought into any position with loosened holding or fixing screws 27 . In this position, it is then held by the fixing screws ben 27 . The adjustment levels consist essentially of circular plates which have a sufficient number of countersunk holes 18 or threaded holes 21 and serve to receive screw heads or retaining screws, with the aid of which the corresponding parts of the adapter are connected to the associated prosthesis parts.

The movement functions for the adjustment levels 10 and 11 are explained in detail below.

By pressing the setting screws shown in Fig. 1 be 16 in the adjustment plane 11 is about the bond Gewindever to the coupling piece 15, a relative displacement shift between this same coupling piece 15 and the positioning plane 11 reaches. Since the coupling 15 gleichzei tig the elongated hole 14 of the adjusting plane is 10 engages necessarily the adjustment plane 10 is moved relative to the adjusting plane. 11

The same applies of course also in the reverse case when the adjusting screw 16 of the adjustment plane 10 is actuated.

The extent of the adjustment can be read on the scale divisions of the flats 17 . The adjustment plane 11 is shown in detail in FIG. 2a. The essentially circular adjustment plane 11 has a dovetail guide 13 and an elongated hole 14 . Countersunk holes 18 serve to accommodate the heads of fastening screws that serve to connect the adjustment plane 11 to the respective part of the prosthesis. In Fig. 2b, the adjustment plane 11 is represented by a dovetail guide 13 in a side view.

Fig. 2c shows a side view of the flattened part or the flat 17 of the adjustment plane 11 with scales. The counterpart on the intermediate piece 20 has a corresponding reference line or a vernier, the position of which for scale grading on the other part (on the flats of the adjustment planes 10 and 11 ) can be read and documented.

Of course, reference line or vernier one on the other hand and graduation on the other also on the ever because other part are arranged.

The connection between the two adjustment levels is established by an intermediate piece 20 according to FIG. 3a. This intermediate piece 20 has on its top and bottom sides receptacles for the dovetail guides (corresponding counter profiles), as are shown in principle in FIGS . 3b and 3c.

At the center of the intersection of the two dovetail guides, the intermediate piece 20 has a circular bore 19 , within which the circular cylindrical coupling piece 15 will arise with a corresponding fit.

Claims (5)

1. Adapter for prostheses, characterized in that two adjustment levels ( 10 , 11 ) with intersecting adjustment directions are present, each adjustment level ( 10 , 11 ) having a dovetail guide ( 13 ) and a slot ( 14 ) lying within the dovetail guide. has and in the main direction of the elongated hole ( 14 ) of the dovetail guide ( 13 ) each has an adjusting screw ( 16 ) in the longitudinal direction, which in turn with a common coupling piece ( 15 ), which extends over at de adjustment levels ( 10 , 11 ), in screw connection stands, the coupling piece ( 15 ) is relatively movable by rotation of the adjusting screw ( 16 ) and between the two adjustment levels ( 10 , 11 ) an intermediate piece ( 20 ) with counter guides to the dovetail guides ( 13 ) and a circular bore ( 19 ) in the intersection of the elongated holes ( 14 ) of the adjustment planes ( 10 and 11 ) for the fitting fitting of the coupling piece ( 15 ) is available with the function of a fixed point and finally with the help of the coupling piece ( 15 ) in the relative adjustment of the coupling piece ( 15 ) within the one adjustment plane ( 10 or 11 ), which if also penetrated by the coupling piece ( 15 ) further adjusting plane ( 11 or 10 ) is movable relative to the other Ver Verlebene. 2. Adapter according to claim 1, characterized in that directions of adjustment intersect at a right angle Zen. 3. Adapter according to one of claims 1 or 2, characterized in that the individual adjustment levels ( 10 , 11 ) have a basically circular plan. 4. Adapter according to claim 3, characterized in that the circular peripheral surfaces of the two parts of an adjustment plane ( 10 or 11 ) flats ( 17 ) have such that they have a continuous plane with the associated flats at the corresponding locations of the circumferential surfaces ( 17 ) form the intermediate piece ( 20 ). 5. Adapter according to one of claims 1, 2 or 4, characterized in that the relatively movable surfaces or flats ( 17 ) of an adjustment plane ( 10 , 11 ) have a scale.