EP3267948A1

EP3267948A1 - Device for connecting prosthesis components to a prosthesis shaft

Info

Publication number: EP3267948A1
Application number: EP16708604.0A
Authority: EP
Inventors: Bernhard Sacherer
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-03-09
Filing date: 2016-03-07
Publication date: 2018-01-17
Also published as: DE102015002882A1; US20180235783A1; DE102015002882B4; WO2016142051A1

Abstract

The invention relates to a device for connecting prosthesis components (10) to a prosthesis shaft (1) to which a connecting element (6) is associated, which connecting element is clamped against a proximally disposed and rotatably mounted counter-plate (15) and to which the prosthesis components (10) can be connected at least indirectly. In such devices the problem arises that, for example in the proximal joint of a leg stump, because of a muscular imbalance due to adduction or abduction of the stump on one side, considerable deviations from the natural position of the limb occur, such that also the position of the tip of a stump, both in the sagittal plane and in the frontal plane can deviate from the perpendicular (9) which is relevant for the structural analysis of a prosthesis. In order to nevertheless be able to construct a prosthesis along said perpendicular, according to the invention the connecting element (6) has a coupling element (11) mounted on a support (12, 17, 18) which extends substantially parallel to the central axis (8) of the prosthesis shaft (1) in a plane (42) and is rotatable about said central axis (8). The distance between the coupling element (11) and the central axis (8) is adjustable, wherein the coupling element (11) is rotatable and lockable with respect to the support (12, 17, 18) on a second axis (41) extending substantially normal to the central axis (8) of the prosthesis shaft (1). The prosthesis component (10) is mounted on the coupling element (10) and is rotatable and lockable about a third axis (9') normal to the second axis (42).

Description

Device for connecting prosthesis components

to a prosthesis stem

The invention relates to a device for connecting a prosthetic components to a prosthesis shaft, on which a connection element is provided, via which the prosthesis component can be coupled to the prosthesis shaft, wherein the connection element is connected via a carrier with a coupling element and the prosthesis component is mounted on the coupling element wherein the carrier is substantially in a plane which is parallel to the central axis of the prosthesis shaft and is rotatable about this central axis and wherein the distance between the coupling element and the central axis adjustable.

A device of this kind is known from DE 10 2012 013 481.

It is known in the orthopedic art that prostheses have a prosthesis stem which is attached to a body part, such as a body part. is adapted to a thigh stump, wherein the prosthesis stem has a wall substantially encompassing the body part, and wherein this prosthesis stem is then provided, in particular at its distal end, with a connection element by means of which further prosthesis components are coupled to the prosthesis stem, for example artificial lower legs with an artificial knee joint, etc The known connection elements are frequently an adapter plate cast in firmly at the distal end of the prosthesis shaft

CONFIRMATION COPY eg in the form of a frequently used four-hole connection plate or in the form of a threaded receptacle M36 etc.

The body part, eg the thigh stump of a leg, can be covered with a silicone stocking (liner). To then produce a solid Verbin ^¬ tion with the prosthesis stem may be provided to the over the stump to everting liner eg sealing lips. It is thus possible to hold the stump eg by means of negative pressure in the prosthesis ^socket . The pump for this negative pressure is integrated either in the prosthesis, eg also in the connected prosthesis components or a corresponding valve is provided on the prosthesis socket.

In addition, in other embodiments, such a liner is providable in its area adjacent to the stump tip with various connection elements, such as a pin or a drawstring, which are inserted and locked in a holder, a so-called lock, at the distal end of the prosthesis shaft. This holding device is usually cast in the prosthesis shaft or is screwed distally to the adapter plate.

In order to be able to remove a stump, on which a liner provided with such a connection member can be removed from the prosthesis socket, the mechanism with which the pin or the draw-in band of the liner is locked in the lock must be able to be actuated externally by the prosthesis user and freely accessible elements.

A basic consideration that is employed in the preparation in particular a leg or lower leg prosthesis from an orthopedic technician is that the prosthesis components in principle, one below the other on the plumb line that runs from the hip joint and the miteinan ^¬ be connected.

It is now the problem that the proximal joint of a leg ^¬ dull due to a muscle imbalance by unilateral adduction or abduction of the stump or on the basis of Beugekon- contractures significant deviations from the natural position of the limb occur, whereby the position of the tip of a stump in both the sagittal and the frontal plane of the plumb line can ^¬ from soft.

For this reason, prosthesis components coupled to the distal end of a prosthesis shaft in the region of the tip of the stump must be coupled to the connection element along the plumb line, which originates from the hip joint, via a substantially horizontally extending connection.

Since the deviation of the stump longitudinal axis of an average thigh stump from the said plumb line can be up to 30 ° and 1 ° deviation of the stump tip from the plumb line at the level of a knee joint compensation of 8 - 10 mm to the plumb line is necessary, so in individual cases more than 250 mm.

Now, for the determination of the details required for a well-adapted prosthesis - in particular also with regard to the desired static structure - first test prostheses are manufactured, which should function with sufficient reliability in the daily environment of the user for as long as possible.

Particularly in such test prostheses, the use of so-called cross supports is common for the connection of a prosthesis shaft with the connected components, which have an adjustment path of approximately 30 mm. Alternatively, plates with rows of holes in combination with an angle-adjustable ball pyramid are also used in such test prostheses.

The starting point is a four-hole receptacle firmly embedded in the prosthesis shaft at its distal end. From this starting an orthopedic technician is working normally so that the compensation in the sagittal plane and the balancing in the Fron ^¬ valley separated from each other, are quasi made separately.

A resulting disadvantage is the need for very large, composed of several parts additively composed structures with high weight, but they have only a low stability and ultimately only inadequate settings. By the additive construction of individual fasteners to a total construction often conflict with a need for setting shift the screw with which the items are connected and be ^¬ also prevent free access to any existing elements through which the mechanism is unlocked , which holds a pen or a drawstring of a liner in a lock.

One way to avoid such composite structures with strong malalignment, is the positioning of the connecting element to the prosthesis stem by means of an additional crop from Po ^¬ lyurethanschaum. Thus, the starting position of a connection element can be brought into the vicinity of the desired position in the area of the relevant for the static solder line.

However, the bonding of such an attachment involves several risks, such as an unclear mutual chemical compatibility of the materials used. Also, there is a significant risk of unwanted detachment in the later use of the prosthesis. To reduce this, constructions are often wrapped with bandages, but this gives them a rough shape.

Especially in the case of a primary care of a user with a prosthesis is trying to change the above-described malposition of a leg stump by therapeutic measures. Because of this, often a regular readjustment of the static structure of a prosthesis is required. However, in the case of the appended attachments, which can be regarded as immutable due to their adhesions, it is often the case that like, actually meaningful post-adjustment omitted, because the effort for these is considered too high.

The object of the invention is therefore to provide a connection of the prosthesis stem to the prosthesis component, which independently of the stump position provides a readjustable and optionally also releasable defined connection of prosthesis stem and prosthesis component, in particular also for a test prosthesis.

This object is achieved according to the invention, according to the features in the characterizing part of the attached main claim.

According to the invention, therefore, there is a device for connecting a prosthesis components to a prosthesis shaft, on which a connection element is provided, via which the prosthesis component can be coupled to the prosthesis shaft, wherein the connection element is connected via a carrier to a coupling element and the prosthesis component is mounted on the coupling element wherein the carrier is substantially in a plane which is parallel to the central axis of the prosthesis shaft and is rotatable about this central axis and wherein the distance between the coupling element and the central axis is adjustable. This device is characterized in that the coupling element is tiltable and lockable relative to the carrier on a second axis which is substantially normal to the plane in which the carrier lies, and in that the coupling element mounted on the prosthesis component to one to the second Axis normal extending third axis is rotatable and lockable.

An advantage of the invention is that it is ensured with a device according to the invention that malpositions of the body stump can be compensated for via the adjustability of the coupling element relative to the carrier and that the coupling element can thus be arranged directly on a desired ideal static line. While as mentioned in the previously known solutions appropriate setting each were made separately in the sagittal plane and in the frontal plane, it is now possible, a SET ^¬ development of the carrier with respect to a prosthesis stem to make both the circumferential and radial directions simultaneously.

In addition, it can also be achieved with such a configuration that the entire third axis runs essentially vertically, irrespective of whether the central axis of the prosthesis shaft runs essentially vertically or deviates from such a perpendicular position.

The invention is based on the idea that the deviation of the position of the distal end of the stump should be bridged to the above-mentioned plumb line on the shortest possible path. Under this aspect, it is pertinent that the carrier is rotatable about the central axis of the prosthesis stem ^¬ principle in order subsequently to be fixable in any desired position.

The construction is so universal that it allows a Nachanpassung the connection device even with a Verringe ^¬ tion of malposition, as it is achieved in a primary care by therapeutic measures, a Nachanpassung the connection device. At the same time, it is mechanically so stable that it can withstand the loads in the long term and thus can also be used for a definitive prosthesis.

The variability of the proposed design allows their wide use regardless of the amputation level of a stump. This enables higher quantities in production and thus ultimately the possibility of a cheaper or more economical production.

In a particularly preferred embodiment prosthetic function parts or holding devices such as lock, valves or catchment elements are mounted in particular centrally in the connection element and are carried along during rotation of the connection element or the carrier attached thereto. Access to the elements used by the Mechanism the lock or the retractor is actuated, is ensured in each rotational position

In particular, it is proposed that the carrier is designed as a flat plate element. This allows for its relatively simple manufacture while at the same time ensuring its stability.

The carrier can also have a substantially U-shaped structure and be attached to both sides of a connection element.

However, it is also within the scope of the invention that the carrier consists of two Plat ^¬ tenbauteilen which are fixed at diametrically opposite locations laterally on the connection element and which extend substantially parallel to the central axis of the prosthesis shaft. This leads to a very high stability of the construction and makes it possible to fasten the coupling element between these plates. Since the carrier is thus also attached laterally to the connection element, it is also ensured that the connection element can be configured as usual and can accommodate locks, valves, catchment elements etc. in its radially inner area.

The carrier or the plate components of which it is made, in particular with greater deviations of the distal prosthetic stump tip of the desired plumb line according to the individual requirements with a running at least partially along the outer wall of the prosthesis stem contour. For this purpose, it is proposed that not only a distal normal running to the ^'central axis of the prosthesis stem portion of the carrier is provided, which is connected as described with the connecting element, but that the carrier also has a along the outer surface of the prosthesis shaft extending substantially further section, which comes to rest on a proximal end of the carrier to the prosthesis stem and is connected therewith, whereby a further stabilizing and supporting effect is given to the carrier. The object of this development of the invention has the advantage that the carrier is supported not only at the distal end of the prosthesis stem but also in the more proximal region, whereby an overall improved force absorption is achieved even with ei ^¬ ner test prosthesis.

In particular, the forces can be guided close to the plumb line and introduced into the prosthesis shaft.

The above-explained embodiment of the invention with the plate elements designed as flat carrier opens almost unlimited adjustment in terms of the displacement of the coupling element relative to the prosthesis stem not only in the radial but in particular in the axial direction, so as to ensure the above-discussed, required bridging ,

The coupling element is preferably fastened by means of blind or through holes on the carrier or on the plate elements forming this. This results in a running through these holes, both normal to the central axis of the prosthesis stem as well as normal to parallel to the central axis extending plane in which the carrier lies, lying second axis about which the coupling element is pivotable, whereby the inclination of the coupling element for Prosthesis shaft or to its central axis is variable. Said second axis is thus substantially horizontal in a substantially vertical position of the central axis.

The coupling element determines a third axis, which in turn lies normal to the second axis, about which the prosthesis attachment parts are rotatably mounted on the coupling element. When using a prosthesis, this third axis should run essentially parallel to the plumb line. Thus, a prosthesis attachment can then be brought back into an aligned in sagittal and frontal plane position.

Since all axes can be fixed or arrested, any relative position from the central axis of the prosthesis shaft to the axis of the prosthesis attachment can be compensated, the latter thus being to be rotated. that usually provided for such attachment BEWE ^¬ supply level is to be aligned on the frontal or sagittal plane of a user.

Essential for the present invention is the recognition that in the previously known solutions corresponding corrections were each made separately in the sagittal plane on the one hand and in the frontal plane on the other hand. In contrast, it is now provided to make a corresponding alignment of the connection element with respect to a prosthesis shaft virtually directly in the direction of a fall line, i. to bridge the deviation of the distal end of the stump to the ideal plumb line on the shortest possible path.

By the possibility of rotation of the connection element or of the carrier, a direct positioning of the coupling element relative to the central axis of the prosthesis shaft in the direction of the fall line is possible and the coupling element remains unchanged in the axis which is normal to the central axis of the prosthesis shaft. On this basis, only the inclination of the shaft is to be compensated, ie the third axis, which in turn is orthogonal to the second axis and in principle in the same plane as the first axis.

In principle, it is desirable for a coupling element to lie substantially in a horizontal plane in use. This is also useful, for example, for the connection of knee joints, since a horizontal plane meets the requirements, which is assumed in the constructive design of a knee axis of industrially manufactured artificial knee joints. This knee axis is then rotated about rotation of the prosthetic attachment about the third axis to lie in or parallel to the frontal plane, thus allowing movement of the artificial lower leg adjacent to the artificial knee in the sagittal plane, as desired to create a natural gait pattern. In an alternative embodiment of the invention, the carrier is not designed as a plate but as a profile which runs along the surface of the prosthesis shaft according to the same Prin ^¬ zip as described above and is supported proximally on the shaft and rotatably mounted about the central ^¬ axis of the prosthesis shaft. On this profile then sits a displaceable and tiltable Ankoppelelement.

In a particularly preferred embodiment, the coupling element is designed as two mutually spaced, pivotable clamping devices. This makes it possible to attach directly to the coupling element the aluminum tubes, as they are commonly used for the connection of prosthesis components.

In an alternative embodiment with a reduced construction height can be obtained with a very flat trained coupling element, for example, in knee examputation valuable height.

Special variants of these coupling elements have an eccentric adjustment for the inclination relative to the carrier. Such eccentric adjustment can be combined with a slot recording especially on the carrier.

Furthermore, it is possible to use a coupling element with a receptacle, e.g. to provide for a conventional connection pyramid.

Further advantages and features of the invention will become apparent from the following description of exemplary embodiments. Showing:

1 is a side view of a device with a plate-like support,

2 is the rear view of a device according to FIG. 1,

3 is a side view of an embodiment with an alternative plate-like support,

4 shows the side view of a device with a profile-like carrier, 5 shows the schematic diagram of a coupling element with two clamping devices spaced apart from one another.

Fig. 6 shows the side view of a coupling element with two axes for low height.

FIG. 1 shows the schematic diagram of a prosthesis socket with prosthesis components attached thereto in a side view.

It can be seen a prosthesis stem 1, which is adapted in shape in the example shown here to a thigh stump.

This prosthesis shaft 1 in this case has a thigh stump comprehensive wall 2 and is equipped at its down here, distal end 3 with a holding device 4 as a prosthetic function part. This holding device 4 serves a user of the prosthesis to fix the prosthesis shank firmly to the associated body part, in the present case to a thigh stump. For this purpose, the thigh stump is covered with a liner in the form of a stocking, for example of silicone, which at its distal end is e.g. a pin 5 carries, which is locked in the holding device 4 and thereby fixed.

The holding device 4 is mounted within a connecting element 6, which is mounted rotatably on the distal end 3 of the prosthesis shaft 1. The holding device 4 and the connecting element 6 are rotatable together.

The holding device 4 can be operated in each rotational position of the user of the prosthesis by means of an element 7 so that the connection of liner and fixture is to be solved.

It can be seen in FIG. 1 that the central axis 8 of the prosthesis shaft 1 has a tilt relative to an ideal line 9 extending substantially vertically from the hip joint 35 (shown schematically). Thus, the tip of the prosthesis shaft is also not on this ideal line. The deviation of the tip is due to a malposition in the hip joint due to muscular adduction and / or abduction of the femoral stump combined in both the sagittal and in the frontal plane. The said ideal line 9 corresponds to the theoretical plumb line, which is naturally present in a complete limb and which runs, for example, in one leg through the hip, knee and ankle joints.

Since the distal end 3 of the prosthesis shaft 1 is not on this ideal line 9, there is a need to bridge the distance at which the distal end deviates from a position on said ideal line 9. In fact, it is endeavored to arrange a prosthesis component 10 placed at the distal end 3 of the prosthesis shaft 1 as close as possible to the ideal line 9.

In order to achieve the bridging of the distance, a coupling element 11 is provided in the illustrated example of FIG. 1, by means of which the prosthesis component 10 is coupled to the prosthesis shaft 1, wherein the coupling element 11 is seated on a support 12.

The carrier 12 lies substantially in a plane in which the central axis 8 of the prosthesis shaft lies or parallel to this plane. Thus, the carrier 12 extends substantially parallel to the central axis 8 of the prosthesis stem 1. In the example shown here, said plane lies in or parallel to the plane of the drawing.

The carrier 12 is attached to the distal end 3 of the prosthesis shaft 1 in the example shown here laterally on the connection element 6, so that it is rotatable with respect to the prosthesis shaft about its central axis 8. This ensures that the ideal line 9 and the central axis 8 lie in one plane. In this way, short and above all direct support paths are achieved.

In the example shown here, the connection element 6 is attached to the prosthesis 1 or the wall of the prosthesis socket 2 by this is clamped between the connection element 6 and a voltage applied from the inside on the prosthesis shaft 1 counterpart 15 via clamping elements 16 in the form of screws. After loosening the clamping elements 16, the connecting element 6 can be rotated as needed, in particular also together with the counterpart 15 and is then by means of tightening the clamping elements 16 again rotationally fixed to the wall 2.

For the rotationally fixed connection of the carrier 12 with the connection element 6, the carrier 12 is fastened laterally to the connection element 6 via two oblong holes or staggered holes 13.

The coupling element 11 in turn is attached to the support 12 via two of a plurality of through holes or blind holes 14.

About the holes 13 or the choice of a matching pair of through holes or blind holes 14, the distance of the coupling element 11 of the connecting element 6 and thus of the central axis 8 can be adjusted. The coupling element is thereby essentially within the above-mentioned plane, which runs parallel to the plane here, moved.

In addition, but also the angular position of the coupling element 11 can be changed so that it is adjustable about an axis 41. This axis 41 is normal to the plane determined by the carrier 12.

To attach the prosthesis attachment 10 to the coupling element 11, it has, as can be seen in Fig. 6, at its proximal end a conical polygon 37 which is inserted into a receiving bore 38 on the coupling element 11. Within this receiving bore 38, the conical polygon 37 is then fixed by a plurality of substantially radially aligned clamping screws 39. The clamping screws 39, which are also designed in particular as set screws, thereby have a tendency, so that the prosthesis part 10 with his conical polygon 37 drawn into the receiving bore and is so firmly connected to the coupling element 11.

In the example shown in FIG. 1, the carrier 12 is designed as a plate-shaped and thus substantially planar component. It has a portion 17 in the region of the distal end 3, which is connected to the connecting element 6, and a portion 18 which extends substantially along the wall 2 of the prosthesis shaft 1 in the proximal ^¬ ler direction. At its proximal end, this section 18 is coupled via a screw connection 19 with an element 20 to a fixing strap 21 revolving around the prosthesis shaft.

In Fig. 2 it can be seen that the element 20 is a clamping element over which the fixing belt 21 is tightly stretched around the wall 2 of the prosthesis shaft 1, so that this forms a fastening means for the portion 18, thus the side of the Wall 2 of the prosthesis shaft 1 attacks.

In particular, it can also be seen in FIG. 2 that the carrier 12 consists of two parallel plates 36, between which the connecting element 6 and the coupling element 25 shown here have two coupling elements 11, which are shown here. Of the clamping elements 25 a functionally explained below in his function tube 28 is held and clamped. The two clamping elements 25 are parallel to the axis 41, about which the coupling element is pivotable.

In the region in which the two sections 17 and 18 meet as shown in FIG. 1, the carrier 12 is provided with the above-mentioned plurality of holes 14, which serve as a receptacle for the Ankoppelele- element 11.

By the coupling element 11 is fastened by means of these bores 14 on the carrier 12, it is pivotable about a (normal to the plane of the drawing) second axis 41 which is normal here to the central axis 8 of the prosthesis shaft 1. The central axis 8 is thus in the plane 42, in or parallel to which the carrier 12 is located and within which the coupling element 11 can be tilted. In the coupling element 11 itself, a third axis is determined (which in turn is in the plane of the drawing), around which then the prosthesis component 10 is to be rotated. This third axis again runs normal to the said second axis and, ideally, coincides with the ideal line 9. It is therefore designated by the reference numeral 9.

The aforementioned bores 14 are, as mentioned, arranged essentially in the manner of a grid, so that there is the possibility of attaching the coupling element 11, via which a prosthesis component 10 is fastened to the support 12, to an arbitrary position in this area, which is as close as possible to the above addressed Idealline 9 lies. Thus, the prosthesis component 10, which adjoins the prosthesis shaft 1, can be arranged on the ideal line 9 and the user of a corresponding prosthesis can thus achieve the most natural possible movement.

As can be seen in FIG. 2, it can be seen that the carrier 12 consists of two plate-like and essentially identical components 36 running parallel to one another, between which then both the connection element 6 and the coupling element 11 are fastened. The two shape-identical components 36, which thus form the carrier 12, are then arranged on both sides of the plane passing through the central axis 8 and attached respectively to the left or right of the connecting element 6 at the distal end 3 of the prosthesis shaft 1.

FIG. 3 shows an alternative embodiment for a carrier 12.

It can be seen here that the inclination of the prosthesis socket 1 and thus the deviation of the prosthesis tip from the desired ideal line 9 is less than in the embodiment according to FIG. 1. Therefore, the support 12 can extend to the section 18 which runs along the outer wall of the prosthesis socket 1 and another support to its pro- ximalen end allows to be dispensed with. Thus, the holes 14, with which the coupling element is connected via the clamping elements 25 on the support 12 and via this with the connection element 6, closer to the said connection element 6 can be arranged. Nevertheless, here too, the distance of the coupling element 11 to the connection element 6 can be changed both in the axial and in the radial direction.

On the one hand, in the area in which the supports 12 are fastened to the connection element 6, the holes provided for this purpose are also designed as elongated holes 13 so that the support 12 can also be displaced in its relative position to the connection element 6, and on the other hand the attachment holes 14 for the coupling element arranged in groups next to each other, so that the adjustability of the coupling element can be achieved by the selection of each matching holes 14.

FIG. 4 shows a further alternative embodiment for a carrier. In this embodiment, the carrier 22 is integrally formed from a bent sheet metal or a bent profile bar and the connection element 11 is seated on this carrier 22 and can be moved along it as needed.

Also in this embodiment, the carrier 22 is formed with an at least partially along the outer wall of the prosthesis stem extending contour and the corresponding portion 23 is coupled via a tab 24 on a fixing strap 21 to the wall 2 of the prosthesis shaft 1 and thus connectable to this.

FIG. 5 shows a special coupling element. This consists of two clamping devices 25, as shown in Fig. 5a in plan view. Such a clamping device 25 has a passage opening 26, the circumference of which can be reduced by the contraction of two jaws 27 and can thereby clamp a tube 28 stuck in the passage opening 26. With such a tube prosthesis attachment parts are provided in their connection area, so that is to be attached via this tube 28, a prosthesis attachment to the coupling element 11 and above to the connection element 6 of the prosthesis stem.

The inclination of the tube 28 relative to the carrier 12 can be determined by the choice of suitable through holes or blind holes 14, as can be seen in a possible variant in Fig. 3.

The clamping devices 25 have, as can be seen in Fig. 5, a distance 29 to each other, so that the tube 28 is held at two distinctly spaced points. Thus, a corresponding stability can be achieved, which is important for the attachment of prosthesis parts to the prosthesis stem.

In the jaws 27 also eccentric 30 are also used, which can be rotated in the above-mentioned passage or blind holes 14. About this rotation of the eccentric 30, the axis 40, which extends through mounting pins 31 on the Exzenterstücken 30, changed in its inclination relative to the central axis 32 of the tube 28 held, which ultimately the connection angle for the tube 28 relative to the carrier 12 is to adjust. The coarse angular position of the central axis 32 and the tube 28 is thus carried out on the selection of the eccentric 30 receiving pair of holes 14 on the carrier 12 and the Feinjustage is then performed by rotation of the eccentric 30. In order to avoid an unwanted tension between two Exzenterverstellungen, in a alternative embodiment, a slot 33 may be provided in the clamping device 25, wherein a combination of an eccentric 30 and a slot 33 is possible. The central axis of the tube 28 is the above-discussed third axis about which the tube 28 and thus to bring the carried by the prosthetic component 10 in any rotational position within the Ba ^¬ CKEN 27 and then to fix by contacting the jaws 27th

Fig. 6 shows a variant of a tiltable coupling element 11, which has a low construction height. One recognizes again the combination of a slot 33 and an eccentric 30 in conjunction with a rotatably mounted pyramidal receptacle 34, wherein a conditional by the rotation of the eccentric 31 changed distance of the guided through these holes elements at the same unaltered distance of the mounting holes 14 on the support plates 12 by the slot 33 can be compensated. The jamming of the pyramid receiver 34 in ^¬ within the Ankoppelelementes also takes place via two jaws 27th

This embodiment makes it possible to attach further prosthesis components with a small overall height and in a stable but nevertheless adjustable over a wide range to a prosthesis socket, as used in stumps with joint-near amputation such as a knee examputation.

Since all the above-described devices completely dispense with adhesive bonds, a prosthesis socket can remain directly on the stump for most adaptation work, with which the adaptation of a prosthesis is considerably faster and more precise possible than with the previously known devices described in the introduction.

It is thus very easy to transfer with an inventive device, the position of the cone axis and thus the adapter position of a test prosthesis precisely to the positive for one to be produced after Definitiv- prosthesis, very precise with this adapter Static On ^¬ construction and without additional Transfer work to the definitive prosthesis. Whereas hitherto in the production of a definitive prosthesis with glued-on cultivation, the latter must be poured over with a second cast, which causes additional weight and makes subsequent readjustment impossible, this work is dispensed with when using a device according to the invention. In addition, in the case of a prosthesis according to the invention, the malpositions of a stump which change during use of this prosthesis can be readjusted at any time.

LIST OF REFERENCE NUMBERS

prosthetic socket

wall

distal end

holder

Connector Liner -Lock

connecting element

Control element for Lock

central axis

ideal line

third axis

prosthetic component

coupling element

carrier

Long holes / row of holes

Holes on the carrier 12

Internal counter plate

clamping element

Distal section

Proximal section

screw

clamping element

fixing

carrier

Proximal section

flap

clamping device

Through opening

to bake

pipe

distance

eccentric pieces Axle / mounting pins center axis

Long hole

Pyramidal image of hip joint

plates

Conical polygonal mounting hole clamping screws axle

second axis

level

Claims

claims

1. A device for connecting a prosthesis component (10) to a prosthesis shaft (1), on which a connection element (6) is provided, via which the prosthesis component (10) can be coupled to the prosthesis shaft,

wherein the connection element (6) is connected via a carrier (12, 17, 18) to a coupling element (11) and the prosthesis component (10) is mounted on the coupling element (11),

wherein the carrier (12, 17, 18) substantially in a plane (42) which is parallel to the central axis (8) of the prosthesis shaft (1) and rotatable about this central axis (8)

and wherein the distance between the coupling element (11) and the central axis (8) is adjustable,

characterized,

in that the coupling element (11) can be tilted and locked relative to the carrier (12, 17, 18) on a second axis (41) which is substantially normal to the plane (42) in which the carrier (12, 17, 18), and

in that the prosthesis component (10) mounted on the coupling element (11) is rotatable and lockable about a third axis (9 ^Λ ) extending normally to the second axis.

2. Device according to claim 1,

characterized,

in that the connection element (6) is mounted so as to be rotatable and lockable relative to the center axis (8) on the prosthesis shaft (1).

3. Apparatus according to claim 2,

characterized, that prosthesis function parts (4) such as lock, valves or catchment elements are mounted in the connection element (6) and can be carried along with the rotation thereof.

4. The device according to one or more of the preceding Ansprü ^¬ che,

characterized,

that the carrier is designed as a flat plate element (12).

5. Device according to one or more of the preceding claims,

characterized,

that the carrier is designed as a profile (22).

6. Device according to one or more of the preceding claims,

characterized,

in that the support consists of two plate components (36) which are fastened laterally to the connection element (6) and which extend in a plane substantially parallel to the central axis (8) of the prosthesis shaft (1).

7. Device according to one or more of the preceding claims,

characterized,

in that the support (12) has a section (18) running essentially along the outer surface of the prosthesis shaft (1), which abuts the prosthesis shaft at a proximal end.

8. Device according to one or more of the preceding claims,

characterized,

in that blind or through-holes (14) are provided on the support (12) for fastening the coupling element (11).

9. Device according to one or more of the preceding claims,

characterized,

in that the coupling element (11) consists of two mutually spaced, pivotable clamping devices (25) which receive a tube (28) of a prosthesis component.

10. Device according to one or more of the preceding claims,

characterized,

in that the coupling element (11) consists of a plate with two connection devices (30, 33) which can be pivoted relative to one another and is equipped with a pyramid receptacle (34).