WO2010050027A1

WO2010050027A1 - Adapter for artificial leg

Info

Publication number: WO2010050027A1
Application number: PCT/JP2008/069758
Authority: WO
Inventors: 正彦奥田; 賀章中矢
Original assignee: ナブテスコ株式会社
Priority date: 2008-10-30
Filing date: 2008-10-30
Publication date: 2010-05-06

Abstract

Intended is to reduce the size of an artificial leg adapter in the vertical direction and to enlarge the position adjusting ranges of artificial leg constituting members to be connected by the artificial leg adapter. The artificial leg adapter comprises a first joint portion, to which the connecting portion of a first constituent member of the artificial leg is inserted and jointed. Further comprised is a rail portion, which is formed integrally with the first joint portion, which extends in a direction perpendicular to the inserting direction of the connecting portion of the first constituent member thereby to protrude from the first joint portion, and which has such a first outer side and a second outer side as to form inclined faces having their spacing gradually increased along the inserting direction. Further comprised is a second joint portion, which can be jointed to the connecting portion of a second constituent member of the artificial leg. Further comprised is a slide portion, which is formed integrally with the second joint portion, which has a first inner side confronting the first outer side of the rail portion and a second inner side confronting the second outer side of the rail portion, and which can slide with respect to the rail portion such that the first and second inner sides and the first and second outer sides engage each other.

Description

Prosthetic adapter

The present invention relates to an artificial leg adapter.

Conventionally, a prosthetic leg attached to a user's leg is known, and for such a prosthetic leg, the constituent members can be connected to each other and the relative positions of the constituent members can be adjusted. An adapter is used. Patent Document 1 below discloses an example of such an artificial leg adapter.

FIG. 16 shows a longitudinal sectional view of a lower limb prosthesis including the prosthetic leg adapter disclosed in Patent Document 1. This prosthetic leg adapter 102 connects a socket 200 into which a user's leg is inserted and a lower leg prosthetic leg column 202 between them. The prosthetic leg adapter 102 is connected to a socket mounting member 104. The adapter body 106, the adapter head 108, and the bolt 110 are provided.

The socket mounting member 104 is coupled to the lower end portion of the socket 200, and a screw hole 104a penetrating vertically is provided in the central portion thereof. The adapter body 106 is fitted on the upper end portion of the support column 202, and the adapter head 108 is fitted inside the adapter body 106. A penetrating space that penetrates vertically is provided in the adapter head 108, and the penetrating space is partitioned vertically by an internal partition 112 provided in the adapter head 108. The inner partition 112 is formed with a long hole 112 a extending in a direction orthogonal to the axis of the support column 202. The bolt 110 is inserted into the long hole 112a of the internal partition 112 from below, and is screwed into the screw hole 104a of the socket mounting member 104, thereby fastening the adapter head 108 to the socket mounting member 104. Yes.

With such a configuration, when the bolt 110 is loosened, the socket mounting member 104 and the socket 200 are moved along the elongated hole 112a together with the bolt 110, and the bolt 110 is tightened at a predetermined position, whereby the shaft of the support column 202 is fixed. Position adjustment of the socket 200 with respect to the support | pillar part 202 can be performed in the direction orthogonal to the center. Therefore, in this prosthetic leg adapter 102, the bolt 110 fastens the adapter head 108 and the socket mounting member 104 so as not to separate from each other in the axial direction of the support column 202, and at the same time, in the direction orthogonal to the axis of the support column 202. The head 108 is fixed with respect to the socket mounting member 104 so as not to be displaced.

However, in this prosthetic leg adapter 102, the head of the bolt 110 protrudes below the internal partition 112 in the adapter head 108, and the upper end of the column 202 is inserted into the adapter body 106. Therefore, in order to avoid the heads of the bolts 110 and the upper ends of the support columns 202 from interfering with each other inside the adapter body 106 and the adapter head 108, the vertical dimensions of the adapter body 106 and the adapter head 108 are increased to some extent. I have to. As a result, it is difficult to reduce the size of the artificial leg adapter 102 in the vertical direction.

Further, in this prosthetic leg adapter 102, since the position of the socket 200 can be adjusted only within the range of the elongated hole 112a of the internal partition 112 provided in the adapter head 108, the position adjustment range is small. There is a point.
Japanese National Patent Publication No. 11-514548

An object of the present invention is to reduce the size of the prosthetic leg adapter in the vertical direction and to expand the position adjustment range of the prosthetic leg constituent members connected by the prosthetic leg adapter.

According to one aspect of the present invention, an adapter for a prosthetic leg is used for an artificial leg that includes a first constituent member having a connecting portion and a second constituent member having a connecting portion, and the first constituent member includes the first constituent member. An adapter for a prosthetic leg that connects a connecting portion and the connecting portion of the second component member, the first connecting portion to which the connecting portion of the first component member is inserted and combined, and the first connecting portion And extending in a direction orthogonal to the insertion direction of the connection portion of the first component member, protruding from the first coupling portion, and having a first outer surface and a second outer surface, A rail portion in which an outer surface and the second outer surface are inclined surfaces in which an interval between the outer surface and the second outer surface gradually increases along the insertion direction; and a second coupling portion that can be coupled to the connection portion of the second component member; , Formed integrally with the second coupling portion, and the rail portion A first inner surface that faces the first outer surface and a second inner surface that faces the second outer surface of the rail portion, and the first inner surface and the first outer surface are engaged with each other; And a slide part slidable with respect to the rail part in a state where the second inner side surface and the second outer side surface are engaged, and a fixing part for fixing the position of the slide part with respect to the rail part. I have.

It is the perspective view which looked at the adapter for artificial legs by 1st Embodiment of this invention from diagonally upward. It is the perspective view which looked at the state which removed the attachment screw of the adapter for artificial legs shown in FIG. 1 from diagonally downward. FIG. 2 is a side view of the prosthetic leg adapter shown in FIG. 1 and is a diagram for explaining a connection state between the lower leg and the socket by the prosthetic leg adapter. It is a bottom view of the adapter for artificial legs shown in FIG. It is a top view of the prosthetic leg adapter shown in FIG. It is the figure which looked at the adapter for artificial legs shown in FIG. 1 along the direction where a rail part is extended from the side from which the rail part protruded from the 1st coupling | bond part. FIG. 7 is a cross-sectional view taken along line VII-VII of the artificial leg adapter shown in FIG. 6. It is a side view corresponding to FIG. 3 which shows the state which has arrange | positioned the slide member in the 1st position in the adapter for artificial legs. It is a side view corresponding to FIG. 3 which shows the state which has arrange | positioned the slide member in the 2nd position in the adapter for artificial legs. It is sectional drawing corresponding to FIG. 7 which shows the state which has arrange | positioned the slide member in the 1st position in the adapter for artificial legs. It is the perspective view which looked at the adapter for artificial legs by the modification of one Embodiment of this invention from diagonally upward. It is the figure which looked at the adapter for artificial legs shown in FIG. 11 along the direction where a rail part extends from the side from which the rail part protruded from the 1st coupling part. It is the figure which showed the example of application of the adapter for artificial legs by the other modification of one Embodiment of this invention. It is the longitudinal cross-sectional view which looked at the example of application of the adapter for artificial legs by the further another modification of one Embodiment of this invention from the front. It is the longitudinal cross-sectional view which looked at parts other than a slide member and a lower prosthetic leg structural member from FIG. 14 from the side. It is a longitudinal cross-sectional view of a leg prosthesis including an artificial leg adapter according to a conventional example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, the configuration of the prosthetic leg adapter 2 according to an embodiment of the present invention will be described with reference to FIGS.

As shown in FIG. 3, the prosthetic foot adapter 2 according to the present embodiment is used for a prosthetic leg including a crus 52 having a connection part 52 a and a socket 54 having a connection part 54 a. The connection part 52a and the connection part 54a of the socket 54 are connected. The crus 52 is included in the concept of the first component of the present invention, and the socket 54 is included in the concept of the second component of the present invention.

The lower leg part 52 is coupled to the upper end part of an unillustrated foot type part imitating the part from the ankle, and extends in the vertical direction. A connecting portion 52 a is provided at the upper end of the crus 52. The connecting portion 52a is formed in a quadrangular shape in plan view, and is inserted and coupled to a first coupling portion 12 of the body portion 4 (described later) of the artificial leg adapter 2 from below. The connecting portion 52a has a total of four side surfaces, that is, a front and rear side surface that intersects with the front and rear direction of the prosthetic leg and two left and right side surfaces that are disposed along the front and rear direction of the prosthetic leg.

The socket 54 is a member into which a user's leg is inserted. The socket 54 is formed in a cylindrical shape with a bottom, and has an internal shape that fits a user's leg. A connecting portion 54 a is provided at the lower end of the socket 54. The connecting portion 54a is externally fitted and coupled to a second coupling portion 22 of the slide member 6 (described later) of the prosthetic leg adapter 2.

The prosthetic leg adapter 2 according to the present embodiment includes the main body portion 4 coupled to the connection portion 52 a of the crus 52, the slide member 6 coupled to the connection portion 54 a of the socket 54, and the fixing screw 8. ing.

As shown in FIG. 1, the main body portion 4 includes a first coupling portion 12, a rail portion 14, and an extending portion 16.

The first coupling portion 12 is a portion where the connecting portion 52a of the crus 52 is inserted and coupled from below. When the first coupling portion 12 is coupled to the connecting portion 52a of the crus 52, the first coupling portion 12 is arranged in the first orientation shown in FIG. 3 and in a second orientation opposite to the first orientation. The state to be arranged, the state to be arranged in the third direction orthogonal to the first and second directions, and the state to be arranged in the fourth direction opposite to the third direction can be selected. is there. The first coupling portion 12 includes an enclosure portion 12a and a mounting screw 12b.

As shown in FIGS. 2 and 4, the enclosure portion 12 a is formed in an annular shape and is disposed so as to surround the outer periphery of the connection portion 52 a of the crus 52. The encircling portion 12a is provided with four screw holes 12c penetrating inside and outside. Each screw hole 12c is disposed at four positions spaced apart at equal intervals in the circumferential direction of the surrounding portion 12a. Of the four screw holes 12c, the two screw holes 12c are disposed at positions facing each other in the extending direction of the rail portion 14, and the remaining two screw holes 12c are opposed to each other in the width direction of the rail portion 14. It is arranged at each position. Moreover, the peripheral part of each screw hole 12c among the enclosure parts 12a is formed thickly compared with the other part.

The mounting screw 12b is a potato screw and is screwed into each screw hole 12c of the enclosure portion 12a. That is, a total of four mounting screws 12b are provided. Each attachment screw 12b presses the corresponding side surface among the four side surfaces of the connection portion 52a of the crus 52 inserted into the enclosure 12a, thereby connecting the connection portion 52a of the crus 52 to the first coupling portion. 12 is fixed. And after the 1st coupling | bond part 12 is arrange | positioned in the predetermined direction among each said direction, the connection part 52a of the leg part 52 is inserted and fitted in the state which each mounting screw 12b was loosened, and 1st after that The coupling portion 12 is coupled to the connection portion 52a of the crus 52 by tightening each mounting screw 12b.

As shown in FIG. 3, the rail portion 14 is disposed on the upper side of the enclosure portion 12a of the first coupling portion 12, and is formed integrally with the enclosure portion 12a. As shown in FIGS. 1 and 5, the rail portion 14 includes a first rail portion 14a, a second rail portion 14b, and a connecting portion 14c.

The first rail portion 14a and the second rail portion 14b extend in a direction orthogonal to the insertion direction of the connecting portion 52a of the crus 52. The first rail portion 14a and the second rail portion 14b are arranged in parallel to each other and separated from each other in the width direction. The connecting portion 14c is provided between the first rail portion 14a and the second rail portion 14b, and connects the first rail portion 14a and the second rail portion 14b. As for the rail part 14, only those one end parts side protrudes in the radial direction outer side from the enclosure part 12a of the 1st coupling part 12, and those other end parts are arrange | positioned on the outer surface of the enclosure part 12a. When the first coupling portion 12 is arranged in the first direction as shown in FIG. 3, the rail portion 14 protrudes from the surrounding portion 12a toward the toe side, and the first direction in the second direction. When the coupling portion 12 is disposed, the rail portion 14 protrudes from the surrounding portion 12a toward the heel side. Moreover, when the 1st coupling | bond part 12 is arrange | positioned in the said 3rd and 4th direction, the rail part 14 protrudes from the enclosure part 12a toward the left or right side of an artificial leg.

The rail part 14 has the 1st outer surface 14d and the 2nd outer surface 14e in the width direction, as shown in FIG. The first rail portion 14a has a first outer surface 14d of the

outer surfaces

14d and 14e, and the second rail portion 14b has a second outer surface 14e. That is, the side surface of the first rail portion 14a opposite to the second rail portion 14b is the first outer surface 14d, and the side surface of the second rail portion 14b opposite to the first rail portion 14a is the second outer surface. 14e. The first outer surface 14d and the second outer surface 14e are disposed on the inner side of the outer peripheral surface of the enclosure portion 12a in the width direction of the rail portion 14. The first outer side surface 14d and the second outer side surface 14e are inclined surfaces whose intervals gradually increase along the insertion direction of the connecting portion 52a of the crus 52. In other words, the first outer surface 14d and the second outer surface 14e are inclined surfaces that increase in distance as they go upward (away from the enclosure 12a). The first rail portion 14a and the second rail portion 14b are formed symmetrically with respect to the center of the rail portion 14 in the width direction.

The top surface of the first rail portion 14a, the top surface of the second rail portion 14b, and the top surface of the connecting portion 14c are planes perpendicular to the insertion direction of the connecting portion 52a of the crus 52, respectively. The top surface of the first rail portion 14a and the top surface of the second rail portion 14b are arranged at the same position in the vertical direction, and the top surface of the connecting portion 14c is one step from the top surface of both the

rail portions

14a and 14b. Located in a low position. The first rail portion 14a has a first inner rail surface 14f facing the second rail portion 14b, and the second rail portion 14b is a second inner rail surface 14g facing the first rail portion 14a. have. The first inner rail surface 14f and the second inner rail surface 14g are both flat along the insertion direction of the connecting portion 52a of the crus 52 and are arranged in parallel to each other.

The extending portion 16 is formed in a plate shape, and extends further outward from the first outer surface 14d and the second outer surface 14e, and on the outer side in the width direction of the rail portion 14 in the enclosure portion 12a. It is formed integrally with the upper end portion of the protruding portion. The extending portion 16 extends outward from the first outer surface 14d and the second outer surface 14e. And as shown in FIG. 8, the range in which the extension part 16 is provided includes the position corresponding to the two screw holes 12c arrange | positioned in the width direction of the rail part 14 in the enclosure part 12a.

The extending portion 16 includes a first extending portion 16a extending outward from the first outer surface 14d and a second extending portion 16b extending outward from the second outer surface 14e. ing. The first extending portion 16a is formed to have a length substantially equal to that of the first rail portion 14a in the direction in which the first rail portion 14a extends, and the second extending portion 16b is in the direction in which the second rail portion 14b extends. Are formed to have a length substantially equal to that of the second rail portion 14b. And as for the 1st extension part 16a and the 2nd extension part 16b, only the one end part of a longitudinal direction protrudes the outer side of the enclosure part 12a similarly to the 1st rail part 14a and the 2nd rail part 14b.

The first extending portion 16a has a first facing surface 16c that opposes a first outer portion 24c, which will be described later, of the slide member 6, and the second extending portion 16b is a second outer portion, which will be described later, of the slide member 6. It has the 2nd opposing surface 16d which opposes the part 24d. The first facing surface 16c is the upper surface of the first extending portion 16a and is connected to the lower end portion of the first outer surface 14d of the first rail portion 14a. 16 d of 2nd opposing surfaces are the upper surfaces of the 2nd extension part 16b, and are connected with the lower end part of the 2nd outer side surface 14e of the 2nd rail part 14b. And the 1st opposing surface 16c becomes an inclined surface which goes to the reverse direction to the insertion direction of the connection part 52a of the said leg part 52 as it goes further outside from the 1st outside surface 14d, and the 2nd opposing surface 16d The inclined surface is directed in the direction opposite to the insertion direction of the connecting portion 52a of the crus 52 as it goes further outward from the second outer surface 14e. That is, the first opposing surface 16c and the second opposing surface 16d are inclined surfaces that are inclined downwardly outward in the width direction of the rail portion 14, respectively. Thereby, when the 1st opposing surface 16c and the 2nd opposing surface 16d are arrange | positioned perpendicularly | vertically with respect to the insertion direction of the connection part 52a of the said leg part 52, ie, the 1st opposing surface 16c and the 2nd opposing surface 16d. Compared with the case where is a horizontal plane, the angle between the first facing surface 16c and the first outer surface 14d and the angle between the second facing surface 16d and the second outer surface 14e are larger.

Also, as shown in FIGS. 4 and 5, the main body 4 is provided with a long hole 18 extending between the first rail portion 14a and the second rail portion 14b in parallel with the

rail portions

14a and 14b. ing. The long hole 18 includes a first portion 18a provided in a region corresponding to the space in the enclosure 12a, and a second portion 18b extending from the first portion 18a in the protruding direction from the enclosure 12a of the rail portion 14. And have.

The first portion 18a penetrates the connecting portion 14c of the rail portion 14 in the insertion direction of the connecting portion 52a of the crus 52, and corresponds to the corresponding portion of the inner portions of the first rail portion 14a and the second rail portion 14b. Is formed by notching (see FIG. 10). The first portion 18a communicates with the space in the enclosure portion 12a, and the edge of the first portion 18a opposite to the second portion 18b is disposed near the inner surface of the enclosure portion 12a. Yes. As shown in FIG. 7, the second portion 18 b is formed with a bottom with a width substantially equal to the interval between the first rail portion 14 a and the second rail portion 14 b in the connecting portion 14 c of the rail portion 14. The edge of the second portion 18b opposite to the first portion 18a is disposed at a substantially intermediate position of the portion of the rail portion 14 that protrudes from the enclosure portion 12a. The first portion 18a is formed to be wider than the second portion 18b, as the inner portions of the first rail portion 14a and the second rail portion 14b are notched.

The slide member 6 is slidably engaged with the rail portion 14 of the main body 4, and is configured to be movable between a first position A shown in FIG. 8 and a second position B shown in FIG. Has been. The first position A is the position where the slide member 6 is closest to the end of the rail part 14 that does not protrude from the enclosure part 12a, and the second position B is the rail part that protrudes the slide member 6 from the enclosure part 12a. 14 is the position closest to the end side. By sliding the slide member 6 with respect to the rail portion 14, the relative position between the lower leg portion 52 coupled to the main body portion 4 and the socket 54 coupled to the slide member 6 is adjusted in the extending direction of the rail portion 14. it can. The slide member 6 has a second coupling portion 22 and a slide portion 24.

The second connecting portion 22 is configured to be connectable to the connecting portion 54a of the socket 54. The second coupling portion 22 is inserted into the connection portion 54a of the socket 54 and fixed to the connection portion 54a. This 2nd coupling | bond part 22 consists of the truncated cone part 22a arrange | positioned in the lower part, and the protrusion part 22b which protrudes from the upper part of the truncated cone part 22a. Of the second coupling portion 22, the protruding portion 22 b is inserted and fixed in the connecting portion 54 a of the socket 54.

The slide portion 24 is a portion that is slidably engaged with the rail portion 14, and is formed integrally with the second coupling portion 22. The slide portion 24 is disposed below the second coupling portion 22. As shown in FIG. 6, the slide portion 24 has a structure that engages with the rail portion 14 so as to hold the rail portion 14 from both outer sides in the width direction. The slide portion 24 includes a first inner side surface 24a that faces the first outer side surface 14d of the rail portion 14, and a second inner side surface 24b that faces the second outer side surface 14e of the rail portion 14, The slide portion 24 is slidable with respect to the rail portion 14 with the first inner side surface 24a and the first outer side surface 14d engaged and with the second inner side surface 24b and the second outer side surface 14e engaged. It has become.

Specifically, the slide portion 24 includes a first outer portion 24c, a second outer portion 24d, a bridging portion 24e, and a reinforcing portion 24f.

The first outer portion 24c is disposed on the opposite side to the second rail portion 14b with respect to the first rail portion 14a. The first outer side portion 24c has the first inner side surface 24a, and the first inner side surface 24a is engaged with the first outer side surface 14d of the first rail portion 14a. The first inner surface 24a is an inclined surface that is inclined at an angle corresponding to the first outer surface 14d. Moreover, the 1st outer side part 24c has the 1st end surface 24i (lower end surface) facing the 1st opposing surface 16c of the 1st extension part 16a. The first end surface 24i is an inclined surface that is inclined at an angle corresponding to the first facing surface 16c. The slide portion 24 slides with respect to the rail portion 14 while the first inner side surface 24a is in sliding contact with the first outer side surface 14d and the first end surface 24i is in sliding contact with the first opposing surface 16c.

As shown in FIGS. 8 and 9, both end portions 24j of the first end surface 24i in the extending direction of the rail portion 14 are directed to the end thereof and further to the outer side of the first outer surface 14d. The inclined surface is away from the first facing surface 16c. In a state where the slide member 6 is disposed at the second position B shown in FIG. 9, the one end 24j of the first end surface 24i is disposed at a position corresponding to the screw hole 12c of the enclosure 12a. In this state, when a load that is biased toward the one end portion 24j of the first end surface 24i is applied to the slide member 6, the one end portion 24j of the first end surface 24i is inclined as described above. Since it is separated from the extended portion 16a, it is possible to prevent a load from being applied to a portion of the first extended portion 16a corresponding to the screw hole 12c having a relatively low strength. Note that both end portions 24j of the first end surface 24i are inclined surfaces as described above, even when the slide member 6 is engaged with the rail portion 14 in the reverse direction. This is to prevent the portion 16a from being applied to the portion corresponding to the screw hole 12c.

Also, the first outer portion 24c is provided with two screw holes 24k separated in the direction in which the rail portion 14 extends. The screw hole 24k penetrates from the outer surface of the first outer portion 24c to the first inner surface 24a.

As shown in FIG. 6, the second outer portion 24d is disposed on the opposite side of the first rail portion 14a with respect to the second rail portion 14b. The second outer portion 24d has substantially the same structure as the first outer portion 24d except that the screw hole 24k is not provided. 1 It arrange | positions symmetrically with the outer side part 24d.

Specifically, the second outer side portion 24d has the second inner side surface 24b, and the second inner side surface 24b is engaged with the second outer side surface 14e of the second rail portion 14b. The second inner side surface 24b is an inclined surface in which the first inner side surface 24a is arranged symmetrically with respect to the center in the width direction of the rail portion 14, and is inclined at an angle corresponding to the second outer side surface 14e. It is an inclined surface.

As described above, the first outer side surface 14d and the second outer side surface 14e of the rail portion 14 are inclined surfaces in which the distance between them gradually increases along the insertion direction of the connecting portion 52a of the crus portion 52. The first inner side surface 24a inclined at an angle corresponding to the first outer side surface 14d is engaged with the first outer side surface 14d, and at the angle corresponding to the second outer side surface 14e with respect to the second outer side surface 14e. When the inclined second inner side surface 24b is engaged, the rail portion 14 and the slide portion 24 are mutually connected in the direction along the insertion direction between the

outer side surfaces

14d and 14e and the inner side surfaces 24a and 24b. Engaging force is applied so as not to disengage.

The second outer portion 24d has a second end surface 24m corresponding to the first end surface 24i, and the second end surface 24m faces the second facing surface 16d of the second extending portion 16b. Yes. Then, both end portions 24n of the second end surface 24m in the extending direction of the rail portion 14 are inclined away from the second opposing surface 16d of the second extending portion 16b toward the end and further toward the outer side of the second outer surface 14e. It is a surface.

The bridging portion 24e is a portion connecting the upper end portion of the first outer portion 24c and the upper end portion of the second outer portion 24d. The bridging portion 24e is disposed on the rail portion 14 and is formed in a substantially rectangular flat plate. A truncated cone portion 22a of the second coupling portion 22 is integrally provided on the bridging portion 24e. Moreover, the part corresponding to each said

rail part

14a, 14b of the lower surface of the bridge | crosslinking part 24e is in sliding contact with the top | upper surface of each said

rail part

14a, 14b.

The reinforcing portion 24f is a portion for reinforcing the bridging portion 24e, and protrudes from the lower surface of the bridging portion 24e and enters between the first rail portion 14a and the second rail portion 14b. The reinforcing portion 24f extends in parallel with the

rail portions

14a and 14b, and is formed to have the same length as the bridging portion 24e in the extending direction. The reinforcing portion 24f is opposed to the first inner rail surface 14f of the first rail portion 14a and slidably contacts with one side surface 24p, and the second rail portion 14b is opposed to the second inner rail surface 14g and slidably contacted with the other side surface 24q. And have.

A stopper that restricts movement of the slide member 6 along the rail portion 14 by contacting the edge of the long hole 18 of the main body portion 4 when the slide member 6 moves along the rail portion 14. A portion 26 (see FIG. 7) is provided. That is, the stopper portion 26 is provided in order to prevent the slide member 6 from sliding too far from the rail portion 14. The stopper portion 26 is disposed at a position corresponding to the center of the slide member 6, protrudes downward from the lower surface of the reinforcing portion 24 f, and is inserted into the elongated hole 18 of the main body portion 4. When the stopper portion 26 is disposed in the first portion 18 a of the long hole 18, the tip end portion (lower end portion) slightly protrudes into the space in the surrounding portion 12 a. However, the distal end portion of the stopper portion 26 does not interfere with the connecting portion 52a of the lower leg portion 52 that is inserted into the first coupling portion 12 from below and disposed in the surrounding portion 12a.

Specifically, a positioning portion 52b is provided below the connecting portion 52a of the crus 52 as shown in FIG. 3, and the positioning portion 52b abuts on the lower end surface of the surrounding portion 12a. The vertical position of the connecting portion 52a of the crus 52 in the enclosure 12a is set. In the present embodiment, a gap is provided between the distal end (upper end) of the connection portion 52a and the lower end of the first portion 18a of the long hole 18 in a state where the positioning portion 52b is in contact with the lower end surface of the enclosure portion 12a. It has become. The distal end portion of the stopper portion 26 is disposed within this gap, and interference with the connecting portion 52a of the crus 52 is avoided. The stopper portion 26 may be disposed within the depth of the first portion 18a of the long hole 18 without the tip portion protruding into the space in the enclosure portion 12a.

When the slide member 6 moves from the first position A side toward the second position B, the stopper portion 26 comes into contact with the edge of the second portion 18b of the long hole 18 as shown in FIG. While the member 6 is prevented from moving beyond the second position B, when the slide member 6 moves from the second position B side toward the first position A, the first portion 18a of the long hole 18 The sliding member 6 is prevented from moving beyond the first position A by coming into contact with the edge. A screw portion 26a is formed at the upper portion of the stopper portion 26, and a screw hole 24r is formed at the mounting position of the stopper portion 26 in the reinforcing portion 24f. The stopper portion 26 is detachably attached to the reinforcing portion 24f when the screw portion 26a is screwed into the screw hole 24r.

The fixing screw 8 (see FIG. 3) is for fixing the position of the slide portion 24 with respect to the rail portion 14, and is formed of a worm screw. The fixing screw 8 is included in the concept of the fixing portion of the present invention. The fixing screw 8 is screwed into the two screw holes 24k of the first outer portion 24d of the slide portion 24, respectively. Each fixing screw 8 fixes the slide part 24 to the rail part 14 by the tip part being in pressure contact with the first outer surface 14d of the rail part 14.

Next, the process of adjusting the position of the crus 52 and the socket 54 using the prosthetic leg adapter 2 according to the present embodiment will be described.

First, a fixing screw for fixing the slide portion 24 to the rail portion 14 in a state where the crus portion 52 and the socket 54 are connected by the artificial leg adapter 2 arranged in the first direction shown in FIG. Loosen 8 As a result, the slide portion 24 can slide along the rail portion 14, so that the slide member 6 is moved relative to the main body portion 4 until the relative position between the socket 54 and the lower leg portion 52 becomes an appropriate position. Move along. Thereafter, the fixing screw 8 is tightened, and the slide portion 24 is fixed to the rail portion 14.

In addition, when the socket 54 cannot be arranged at a desired position unless the slide member 6 is arranged behind the first position A in FIG. 8, that is, beyond the first position A and opposite to the second position B, While removing the connection part 52a of the lower leg part 52 from the 1st coupling | bond part 12, the 2nd coupling | bond part 22 is removed from the connection part 54a of the socket 54, and the adapter 2 for artificial legs is 2nd of the direction opposite to the said 1st direction. It arranges in the direction and reconnects the connecting portions 52a and 54a corresponding to the connecting

portions

12 and 22 respectively. By doing so, the position adjustment range to the rear of the socket 54 is expanded, so that the socket 54 can be arranged at a desired position.

As described above, in the prosthetic leg adapter 2 of the present embodiment, the first outer surface 14d and the second outer surface 14e of the rail portion 14 extending in the direction orthogonal to the insertion direction of the connecting portion 52a of the crus 52 are In addition to an inclined surface in which the interval gradually increases along the insertion direction, the first inner side surface 24a of the slide portion 24 facing the first outer side surface 14d engages with the first outer side surface 14d, and the first 2 Since the second inner side surface 24b of the slide portion 24 facing the outer side surface 14e is engaged with the second outer side surface 14e, both the

outer side surfaces

14d, 14e of the rail portion 14 and both

inner side surfaces

24a, 24b of the slide portion 24 are engaged. A force for engaging the rail portion 14 and the slide portion 24 so as not to be separated from each other in the direction along the insertion direction can be applied. Accordingly, it is not necessary to use a bolt protruding into the adapter as in the prior art in order to connect the slide portion 24 and the rail portion 14 to each other in the direction along the insertion direction. In order to prevent interference with the connection part 52a of the part 52, the dimension of the prosthetic leg adapter 2 in the insertion direction, in other words, the vertical dimension of the prosthetic leg adapter 2 does not have to be increased. As a result, it is possible to reduce the size of the artificial leg adapter 2 in the vertical direction. Further, in the prosthetic leg adapter 2 of the present embodiment, the rail portion 14 protrudes outward from the first coupling portion 12, and the crus 52 and the socket 54 are relatively positioned within the length of the rail portion 14. Since the position can be adjusted, the relative positions of the crus 52 and the socket 54 are relatively small compared to the conventional case where the positions of the prosthetic leg components are adjusted within the length of the long hole in the adapter head. The general position adjustment range can be expanded. Therefore, in the present embodiment, it is possible to reduce the size of the prosthetic leg adapter 2 in the vertical direction and to enlarge the relative position adjustment range between the crus 52 and the socket 54 connected by the prosthetic leg adapter 2. .

Moreover, in this embodiment, since only the one end part side of the rail part 14 protrudes from the 1st coupling part 12 in the main-body part 4, compared with the case where both the both ends of a rail part protrude from the 1st coupling part. The size of the artificial leg adapter 2 in the direction in which the rail portion 14 extends can be reduced. And in this embodiment, since the 1st coupling part 12 can be arranged in the 1st direction and the 2nd direction which is the opposite direction to the connection part 52a of the leg part 52, according to it. The direction from which the rail part 14 protrudes from the 1st coupling | bond part 12 can be set to the 1st direction and the 2nd direction which is the opposite direction. Thereby, even if only one end portion side of the rail portion 14 protrudes from the first coupling portion 12, the protruding direction of the rail portion 14 is selectively selected from the first direction and the second direction. By setting, it is possible to secure a position adjustment range between the lower leg portion 52 and the socket 54 as much as both ends of the rail portion 14 protrude from the first coupling portion 12.

Further, when the end portions of the

outer side portions

24c and 24d of the slide portion 24 in the extending direction of the rail portion 14 are in contact with the extending portion 16, the end portions of the

outer side portions

24c and 24d are extended portions. 16, when a load is applied to the slide portion 24 in a state of being arranged at a position corresponding to the screw hole 12 c, the load is relatively weak in the extended portion 16 from the end portions of the

outer portions

24 c and 24 d. In addition to the portion corresponding to the screw hole 12c, the portion may be deformed or damaged. On the other hand, in the present embodiment, the extending portions extend toward the end portions of the

end portions

24j and 24n of the facing

surfaces

24i and 24m of the

outer side portions

24c and 24d of the slide portion 24 in the direction in which the rail portion 14 extends. 16, even if a load is applied to the slide part 24 and the slide part 24 is displaced with respect to the main body part 4, the

end parts

24 j and 24 n of the

outer parts

24 c and 24 d are Contact with the extended portion 16 can be prevented. As a result, the load applied to the slide portion 24 is prevented from being applied to the portion corresponding to the screw hole 12c in the extended portion 16 from the

end portions

24j, 24n of the facing

surfaces

24i, 24m of the slide portion 24. And deformation or breakage of the portion can be prevented.

Further, when the rail portion 14 is not divided into the first rail portion 14 a and the second rail portion 14 b and is configured as a single unit, the bridging portion 24 e of the slide portion 24 is connected to the second coupling portion 22. It is necessary to form it thickly so that it can endure the load added by this, and the inconvenience that the vertical dimension of the prosthetic foot adapter 2 increases due to this. On the other hand, in the present embodiment, the rail portion 14 includes a first rail portion 14a and a second rail portion 14b that are spaced apart from each other, and the first rail portion 14a and the bridging portion 24e of the slide portion 24 are connected to each other. Since the reinforcing portion 24f is provided so as to enter between the second rail portion 14b, the bridge portion 24e can be reinforced by the reinforcing portion 24f. For this reason, the strength of the bridging portion 24e can be ensured without increasing the thickness of the bridging portion 24e. As a result, the strength of the bridging portion 24e of the slide portion 24 can be ensured while preventing an increase in the vertical dimension of the prosthetic foot adapter 2.

In addition, the opposing

surfaces

16c and 16d facing the end surfaces 24i and 24m of the

outer portions

24c and 24d of the slide portion 24 in the extended portion 16 are perpendicular to the insertion direction of the connecting portion 52a of the crus 52. In the case of being formed in a planar shape, between the facing

surfaces

16c and 16d and the

outer surfaces

14d and 14e of the rail portion 14 that are inclined surfaces that gradually increase the distance along the insertion direction. Becomes smaller, and it becomes difficult to cut each of the opposing

surfaces

16c and 16d. On the other hand, in the present embodiment, the first facing surface 16c and the second facing surface 16d are inclined surfaces that gradually increase in distance as they go in the direction opposite to the insertion direction. Even if each

outer surface

14d, 14e is an inclined surface in which the interval gradually increases along the insertion direction, between each

outer surface

14d, 14e and the opposing

surface

16c, 16d of the extending portion 16 connected to the

outer surface

14d, 14e. The angle can be increased. For this reason, each opposing

surface

16c, 16d of the extension part 16 can be cut easily.

In addition, it should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes meanings equivalent to the scope of claims for patent and all modifications within the scope.

For example, the rail part 14 may not be divided | segmented like the modification of the said embodiment shown in FIG.11 and FIG.12, but may be comprised single.

Specifically, in this modified example, the upper surface of the rail portion 14 is formed in a flat surface. And the reinforcement part 24f like the said 1st Embodiment is not provided in the lower surface of the bridge | bridging part 24e of the slide part 24 which opposes the upper surface of this rail part 14, The lower surface of the said bridge | bridging part 24e is a plane. It is formed in a shape. Although not shown in FIGS. 11 and 12, a stopper portion 26 similar to that of the above embodiment protrudes downward from the lower surface of the bridging portion 24e. Other configurations of the modification are the same as those of the first embodiment.

Even in this modification, the same effects as in the first embodiment can be obtained except for the effects of the reinforcing portion 24f.

Further, as shown in FIG. 13, the prosthetic leg adapter includes a connecting portion 52c that the lower leg 52 has at its lower end, and a connecting portion 56a that has an ankle portion 56 that imitates the tip of the ankle at its upper end. It is also possible to connect and perform relative position adjustment between the lower leg part 52 and the foot mold part 56. In the case of the modification shown in FIG. 13, the foot mold portion 56 is included in the concept of the first component member of the present invention, and the crus 52 is included in the concept of the second component member of the present invention. It is what

Also, the prosthetic leg adapter 2 can be used by being arranged upside down with respect to the arrangement in the above-described embodiment and modification. That is, prosthetic legs corresponding to the first coupling portion 12 and the second coupling portion 22 in a state where the first coupling portion 12 of the main body portion 4 is disposed on the upper side and the second coupling portion 22 of the slide member 6 is disposed on the lower side. You may make it couple | bond the connection part of a structural member. In the above-described embodiment, when the prosthetic leg adapter 2 is used by being disposed upside down, the socket 54 is included in the concept of the first component of the present invention, and the crus 52 is the present invention. It is included in the concept of the second component member. Further, in the modification shown in FIG. 13, when the prosthetic foot adapter 2 is disposed in the upside down direction, the crus 52 is included in the concept of the first component of the present invention, and the foot shape The part 56 is included in the concept of the second component member of the present invention.

Further, in the present invention, in the state where the slide member 6 is arranged at the second position B as in the above embodiment, the second end of the first end surface 24i of the first outer portion 24c and the second of the second outer portion 24d. The configuration is not limited to the configuration in which the one end 24n of the end face 24m is closest to the screw hole 12c of the enclosure 12a. For example, in a state where the slide member 6 is located between the first position A and the second position B, the one end 24j of the first end surface 24i and the one end 24n of the second end surface 24m are in the screw hole 12c of the surrounding portion 12a. You may be comprised so that it may approach most.

As shown in FIGS. 14 and 15, the prosthetic adapter is provided on the lower leg prosthesis to be attached to the lower leg when the user's leg cutting part is located on the lower part of the knee, that is, the lower leg. It can also be incorporated.

Specifically, the lower leg prosthesis includes an upper prosthetic component 62 attached to the cutting portion, and a lower prosthetic component 64 connected to the lower end of the upper prosthetic component 62 via an artificial leg adapter. . That is, the prosthetic foot adapter is used to connect the upper prosthetic leg component 62 and the lower prosthetic leg component 64 and to adjust the relative position between the two

prosthetic leg components

62 and 64. In this case, the upper prosthetic component 62 is included in the concept of the first component of the present invention, and the lower prosthetic component 64 is included in the concept of the second component of the present invention.

The upper prosthetic leg constituting member 62 includes a mounting member 66, a socket 68, a connecting portion 70, a lock mount 72, and a lock pin 74.

The mounting member 66 is mounted on the cutting portion, and includes a liner 66a and a catch pin 66b. The liner 66a is formed into a bag shape by a flexible material such as silicon, and is covered with the cut portion to prevent damage due to rubbing of the cut portion. The catch pin 66b includes a dish-like coupling portion 66c coupled to the lower end portion of the liner 66a, and a pin portion 66d extending linearly downward from the coupling portion 66c. The pin portion 66d extends in a direction substantially equal to the user's lower leg with the liner 66a attached to the cutting portion. Further, a plurality of concave grooves 66e are formed in the axial direction on the outer periphery of the pin portion 66d.

The socket 68 is formed in a cylindrical shape having a smaller diameter as it goes downward, and has an internal shape that fits the cut part of the user's lower leg. The user's lower leg is inserted into the socket 68 and fixed with the mounting member 66 mounted.

The connecting portion 70 is disposed at the lower end portion of the upper prosthetic leg constituting member 62, and has a truncated cone portion 70a and a protrusion having the same shape as the truncated cone portion 22a and the protruding portion 22b of the second coupling portion 22 of the artificial leg adapter. It has a portion 70b. The connecting portion 70 is disposed so that the protruding portion 70b protrudes downward from the truncated cone portion 70a, and in this state, the protruding portion 70b is inserted and coupled to the first coupling portion 12 of the prosthetic leg adapter. A through hole 70c penetrating in the axial direction is provided at a position corresponding to the axial center of the connecting portion 70.

The lock mount 72 connects the lower end portion of the socket 68 and the upper end portion of the connection portion 70. A through hole 72 a that penetrates in the axial direction and communicates with the through hole 70 c of the connection portion 70 is provided at a position corresponding to the axis of the lock mount 72. The pin portion 66 d of the catch pin 66 b is inserted into the through hole 72 a of the lock mount 72 and the through hole 70 c of the connection portion 70. When the user inserts the lower leg with the mounting member 66 into the socket 68, the user must insert the pin portion 66d into the through hole 72a in a state where the through hole 72a of the lock mount 72 cannot be seen due to being blocked by the lower leg. Therefore, the length of the pin portion 66d is increased so that it can be inserted as much as possible. Due to this, when the user's lower leg is completely inserted into the socket 68 and the pin portion 66d is completely inserted into the through

holes

72a and 70c, the tip of the pin portion 66d is connected. It protrudes from the lower end of the part 70. Further, the lock mount 72 is formed with a hole 72b extending radially inward from the outer surface thereof and reaching the through hole 72a.

The lock pin 74 locks the pin portion 66 d inserted into the through hole 72 a of the lock mount 72, so that the mounting member 66 that is mounted on the user's lower leg and inserted into the socket 68 does not come out of the socket 68. To fix. The lock pin 74 is inserted into the hole 72 b of the lock mount 72 and is urged toward the inside in the radial direction of the lock mount 72 by a spring member (not shown). The tip of the lock pin 74 is pressed against the outer surface of the pin portion 66d by the urging force of the spring member and engages with the concave groove 66e, whereby the pin portion 66d is locked.

The lower prosthetic leg component member 64 includes a foot mold part 76, a pipe part 78, and a connection part 80.

The foot mold part 76 is a part imitating the part from the ankle, and a pipe part 78 is connected to the upper end part thereof. The pipe part 78 extends in the vertical direction, and a connection part 80 is fitted to the upper end part thereof. In the connection portion 80, the protruding portion 22b of the second coupling portion 22 of the artificial leg adapter is inserted and fixed.

And in this structural example, the adapter for artificial legs has the 1st coupling part 12 of main part 4 located in the upper part, the 2nd coupling part 22 of slide member 6 is located in the lower side, and rail part 14 is a user. It is incorporated into the lower leg prosthesis with the leg extending in the left-right direction. The user's lower leg is inclined obliquely at an angle θ with respect to the vertical direction in the left-right direction as shown in FIG. 14, and is inclined obliquely at an angle η with respect to the vertical direction in the front-rear direction as shown in FIG. ing. The magnitudes of the inclination angles θ and η vary depending on the cutting condition of the lower leg, but generally tend to increase as the length from the knee to the cut portion is shorter. In general, the inclination angle θ in the left-right direction is larger than the inclination angle η in the front-rear direction. Since the upper prosthetic leg member 62 attached to the user's lower leg is inclined with respect to the vertical direction at the same angles θ and η as the lower leg, the connecting part 80 of the pipe member 78 extending in the vertical direction of the lower prosthetic leg member 64 and Deviations of angles θ and η occur between The prosthetic foot adapter is configured to connect the upper prosthetic foot constituting member 62 and the lower prosthetic foot constituting member 64 while absorbing the deviation of the angles θ and η.

Specifically, the first coupling portion 12 of the prosthetic leg adapter can be coupled to the connection portion 70 of the upper prosthetic leg component member 62 that is inclined obliquely. That is, the space in the enclosure portion 12a of the first coupling portion 12 is large enough to allow the protruding portion 70b of the connecting portion 70, which is disposed with the axis extending in the vertical direction, to be inserted with a gap around it. Is formed. As a result, even if the upper prosthesis constituting member 62 is inclined obliquely and the protruding portion 70b of the connecting portion 70 is inclined, the inclined protruding portion 70b can be inserted into the space in the surrounding portion 12a. ing. The outer surface of the truncated cone part 70a of the connecting part 70 has a rounded outer shape in a cross section along the axial direction, and the frustoconical part is located on the radially inner portion of the upper end surface of the enclosure part 12a. A receiving surface 12e that is curved in a shape that conforms to the rounded outer shape of 70a is formed. By this receiving surface 12e, a portion of the outer surface of the truncated cone portion 70a located on the inner side in the falling direction of the upper prosthetic leg component member 62 is supported from below. Since the receiving surface 12e is curved corresponding to the rounded outer shape of the truncated cone part 70a as described above, even if the inclination angle of the upper prosthetic leg member 62 changes, the receiving surface 12e is formed on the outer surface of the truncated cone part 70a. The truncated cone part 70a can be supported with good contact. Each of the four mounting screws 12b of the first coupling portion 12 adjusts the tightening amount so as to be pressed against the corresponding side surface of the projecting portion 70b according to the inclination of the projecting portion 70b of the connecting portion 70. can do. As described above, the connection portion 70 of the upper prosthetic leg member 62 is supported from below on the receiving surface 12e of the first coupling portion 12 in an inclined state, and is fastened and fixed from four directions by the mounting screws 12b. As a result, the connection part 70 can be coupled to the first coupling part 12 in an inclined state.

Further, the connecting portion 70 at the lower end portion of the upper prosthetic leg component member 62 is displaced laterally with respect to the user's upper leg according to the magnitude of the inclination angle θ in the lateral direction of the lower leg. Arise. Therefore, the position of the connecting portion 70 of the upper prosthetic leg component member 62 due to the inclination of the upper thigh is adjusted by adjusting the relative position of the main body part 4 and the slide member 6 of the artificial leg adapter along the rail part 14. The prosthetic leg adapter 62 and the lower prosthetic leg component member 64 are connected with the lower prosthetic leg component member 64 positioned at an appropriate position in the left-right direction with respect to the user's upper leg. It can be connected via. The feature that the rail part 14 of the prosthetic leg adapter protrudes outward from the first coupling part 12 and the relative position adjustment range between the two prosthetic leg

constituent members

62 and 64 is large is that the inclination of the upper leg of the user is large, This is also effective from the viewpoint of ensuring a large correction range capable of correcting the misalignment even if a large misalignment occurs in the connecting portion 70.

Further, the portion of the pin portion 66d of the upper prosthetic leg component 62 that protrudes from the lower end of the connecting portion 70 is inserted into the first portion 18a of the long hole 18 formed in the rail portion 14 of the slide member 6, Interference between the pin portion 66d and the rail portion 14 when the connecting portion 70 is inserted into and coupled to the first coupling portion 12 is avoided. The first portion 18a of the long hole 18 is included in the concept of the insertion hole of the present invention. The first portion 18a of the long hole 18 is formed in such a size that the pin portion 66d is inserted with a gap, and the diameter in the direction in which the rail portion 14 extends is larger than the diameter in the direction perpendicular to the rail portion 14. Also, it is formed in a large approximately oval shape. The diameter (major axis) of the first portion 18a in the direction in which the rail portion 14 extends is set such that the pin portion 66d inclined at the inclination angle θ in the left-right direction does not interfere with the rail portion 14 and is orthogonal to the rail portion 14. The diameter (minor axis) of the first portion 18 a in the direction to be set is set to a size such that the pin portion 66 d inclined at the inclination angle η in the front-rear direction does not interfere with the rail portion 14.

As described above, when the pin portion 66d is inserted into the first portion 18a of the elongated hole 18 with a gap, even if the pin portion 66d of the upper prosthetic leg component member 62 is inclined according to the inclination of the user's lower leg. The interference of the pin portion 66d with the rail portion 14 can be avoided by the gap. And since the diameter of the direction where the rail part 14 extends among the 1st part 18a of the long hole 18 is larger than the diameter of the direction orthogonal to the rail part 14, compared with inclination | tilt angle (eta) of the leg in the front-back direction. Even if the pin portion 66d has a greater inclination in the left-right direction than in the front-rear direction due to an increase in the inclination angle θ of the lower leg in the left-right direction, the pin portion 66d has a longer diameter in the first portion 18a. Interference between the tip portion and the rail portion 14 can be effectively avoided.

Further, notch portions 24t are formed at both ends of the reinforcing portion 24f of the slide member 6 in the direction in which the rail portion 14 extends, and the notch portions 24t lower the connection portion 70 of the upper prosthetic leg component member 62. Interference between the tip end portion of the pin portion 66d protruding to the reinforcing portion 24f is avoided. The length of the notch 24t in the direction in which the rail portion 14 extends is set to such a length that the deformation of the bridging portion 24e due to the load applied to the bridging portion 24e can be prevented by the remaining reinforcing portion 24f. Yes.

(Outline of this embodiment)
This embodiment is summarized as follows.

That is, the prosthetic leg adapter according to the present embodiment is used for a prosthetic leg that includes a first constituent member having a connecting portion and a second constituent member having a connecting portion, and the connecting portion of the first constituent member An adapter for a prosthetic leg that connects the connection portion of the second component member, and a first coupling portion into which the connection portion of the first component member is inserted and coupled, and an integral part of the first coupling portion The first component member extends in a direction orthogonal to the insertion direction of the connection portion and protrudes from the first coupling portion, and has a first outer surface and a second outer surface, and the first outer surface. And a rail portion in which the second outer surface is an inclined surface in which the interval gradually increases along the insertion direction, a second coupling portion that can be coupled to the connection portion of the second component member, and the first 2 integrally formed with the coupling portion, and the rail portion A first inner surface that faces the first outer surface and a second inner surface that faces the second outer surface of the rail portion, and the first inner surface and the first outer surface are engaged with each other; And a slide part slidable with respect to the rail part in a state where the second inner side surface and the second outer side surface are engaged, and a fixing part for fixing the position of the slide part with respect to the rail part. I have.

In this prosthetic leg adapter, the first and second outer surfaces of the rail portion extending in a direction orthogonal to the insertion direction of the connection portion of the first component member are inclined surfaces in which the interval gradually increases along the insertion direction. In addition, the first inner surface of the slide portion facing the first outer surface engages with the first outer surface, and the second inner surface of the slide portion facing the second outer surface is the second outer surface. Since it engages, a force is applied between the outer side surfaces of the rail portion and the inner side surfaces of the slide portion so that the rail portion and the slide portion are engaged with each other so as not to be separated from each other in the direction along the insertion direction. Can be made. Thus, since it is not necessary to use a bolt protruding into the adapter as in the prior art in order to couple the slide portion and the rail portion to each other in the direction along the insertion direction, such a bolt and the first component member In order to prevent interference with the connection portion, the size of the prosthetic leg adapter in the insertion direction, in other words, the vertical dimension of the prosthetic leg adapter does not have to be increased when the insertion direction is set in the up-down direction. As a result, it is possible to reduce the size of the artificial leg adapter in the vertical direction. Moreover, in this adapter for artificial legs, the rail part protrudes from the said 1st coupling part, and relative position adjustment of a 1st structural member and a 2nd structural member can be performed within the range of the length of the rail part. Therefore, the position adjustment range of the prosthetic leg constituent members can be expanded as compared with the conventional case where the position adjustment of the prosthetic leg constituent members is performed within the range of the length of the long hole in the adapter head. Therefore, in this configuration, the prosthetic leg adapter can be reduced in size in the vertical direction, and the position adjustment range between the prosthetic leg constituent members connected by the prosthetic leg adapter can be expanded.

In the above-mentioned artificial leg adapter, the first coupling portion is arranged in a first orientation when coupled with the connection portion of the first component member and in a second orientation opposite to the first orientation. It is preferable that at least the arrangement state can be selected, and only one end side of the rail portion protrudes from the first coupling portion.

In this configuration, since only one end portion side of the rail portion protrudes from the first coupling portion in the main body portion, the direction in which the rail portion extends is longer than when both end portions of the rail portion protrude from the first coupling portion. It is possible to reduce the size of the artificial leg adapter. And in this structure, since a 1st coupling | bond part can be arrange | positioned with respect to the connection part of a 1st structural member in the 1st direction and the 2nd direction which is the opposite direction, a rail part corresponds to it accordingly. The direction protruding from the first coupling portion can be selectively set to the first direction and the second direction which is the opposite direction. Thereby, even if only the one end part side of the rail part protrudes from the first coupling part, the direction in which the rail part protrudes is selectively set to either the first direction or the second direction. Thus, it is possible to secure a position adjustment range of the prosthetic leg constituent member that is approximately the same as that at which both end portions of the rail portion protrude from the first coupling portion.

The adapter for artificial legs further includes an extending portion extending further outward from the first and second outer surfaces of the rail portion, and the first coupling portion is formed of the connecting portion of the first component member. The enclosure is disposed so as to surround the outer periphery and is provided with a screw hole penetrating the inside and outside of the enclosure, and is screwed into the screw hole of the enclosure and pressed against the outer surface of the connection portion of the first component member. An attachment screw for fixing the connection portion to the first coupling portion, and the range in which the extension portion is provided includes at least a position corresponding to the screw hole of the enclosure portion, and the slide portion includes: A first outer portion disposed outside the rail portion and having the first inner surface; a second outer portion disposed outside the rail portion and having the second inner surface; The first and second outer portions are arranged on the label. The surface facing the extending portion at both ends in the direction of extension of the section is, it is preferable that an inclined surface away from the extended portion as it goes to the end.

When the end portions of the first and second outer portions of the slide portion in the direction in which the rail portion extends are in contact with the extending portion, the end portions of the outer portions are formed in the screw holes in the extending portion. When a load is applied to the slide part in a state where it is arranged at the corresponding position, the load is applied from the end of each outer part to the part corresponding to the relatively weak screw hole in the extended part. The part may be deformed or damaged. On the other hand, as in this configuration, the surfaces facing the extension portion at both ends of the first and second outer portions of the slide portion in the direction in which the rail portion extends are separated from the extension portion toward the end portion. If it is an inclined surface, even if a load is applied to the slide part and the slide part is displaced with respect to the main body part, it is possible to prevent the end part of each outer part from coming into contact with the extended part. it can. As a result, the load applied to the slide portion can be prevented from being applied to the portion corresponding to the screw hole in the extending portion from the end portion of each outer portion of the slide portion, and the deformation or breakage of the portion can be prevented. be able to.

In the above-described artificial leg adapter, the rail portion includes a first rail portion having the first outer surface and a second rail portion having the second outer surface, and the first rail portion and the second rail. The parts are arranged parallel to each other and spaced apart from each other in the width direction, and the slide part is disposed adjacent to the first rail part, and has a first outer part having the first inner surface, and the second part. A second outer portion disposed adjacent to the rail portion and having the second inner surface, and connecting the first outer portion and the second outer portion, and the second coupling portion are integrally formed. It is preferable to include a bridging portion and a reinforcing portion provided in the bridging portion so as to enter between the first rail portion and the second rail portion.

In the case where the rail portion is not divided into the first rail portion and the second rail portion and is configured as a single piece, the slide portion is provided with the first arranged outside the first and second outer surfaces of the rail portion. It is necessary to form a bridging portion that connects the first and second outer portions and is integrally formed with the second coupling portion so as to be able to withstand the load applied through the second coupling portion. As a result, the vertical dimension of the artificial leg adapter increases. On the other hand, in this configuration, since the bridging portion of the slide portion can be reinforced by the reinforcing portion provided so as to enter between the first rail portion and the second rail portion, the thickness of the bridging portion is increased. It is possible to ensure the strength of the cross-linked part without causing it. As a result, it is possible to ensure the strength of the bridging portion of the slide portion while preventing an increase in the vertical dimension of the artificial leg adapter.

The prosthetic adapter includes an extending portion that extends further outward from the first and second outer surfaces of the rail portion, and the slide portion is disposed outside the first outer surface. A first outer portion having the first inner surface; and a second outer portion disposed on the outer side of the second outer surface and having the second inner surface. A first opposing surface that extends continuously outward from one outer surface and faces the first outer portion, and a second opposing surface that extends continuously outward from the second outer surface and faces the second outer portion The first facing surface and the second facing surface are preferably inclined surfaces that gradually increase in distance as they go in the direction opposite to the insertion direction.

In the case where the first and second opposing surfaces that oppose the first and second outer portions of the slide portion of the extending portion are formed in a planar shape perpendicular to the insertion direction, these opposing surfaces and the insertion The angle between each outer surface that is an inclined surface that gradually increases the distance along the direction becomes small, and it becomes difficult to cut each facing surface. On the other hand, in the present configuration, the first and second outer surfaces are inclined surfaces in which the first and second opposing surfaces gradually increase in distance as they go in the direction opposite to the insertion direction. However, even if it becomes the inclined surface which those space | intervals spread gradually along the said insertion direction, the angle between each outer surface and the opposing surface of the extension part connected to it can be enlarged. For this reason, the cutting process of the 1st and 2nd opposing surface of an extending part can be performed easily.

In the prosthetic leg adapter, the first component member is attached to a cut portion of a user's lower leg, and the connection portion of the first component member is disposed at a lower portion of the first component member. The first connecting portion may be connectable with the connecting portion of the first component member in an obliquely inclined state.

When the user's lower leg has a cut part, the lower leg is generally inclined at a predetermined angle with respect to the vertical direction, and the inclination angle changes according to the length from the knee to the cut part. To do. When the first component member is worn on the user's lower leg, the first component member also tilts according to the inclination angle of the lower leg, so that the first coupling portion of the prosthetic leg adapter is inclined obliquely as in the present configuration. The first component member and the second component member are coupled to each other while absorbing the inclination of the user's lower leg and the first component member with the prosthetic leg adapter by being able to be coupled with the connection portion of the first component member in the closed state. be able to.

In this case, the first component member has a pin portion that protrudes downward from the connection portion of the first component member, and the rail portion has the connection portion of the first component member as the first component. There may be provided an insertion hole into which the pin part is inserted with a gap when inserted into the coupling part and coupled.

If comprised in this way, the pin part which protrudes from the connection part of the said 1st structural member when the connection part of a 1st structural member is inserted in the 1st coupling part, and is combined will be in the rail part of the adapter for artificial legs. Since it is inserted in a state having a gap in the insertion hole provided, even if the connecting portion of the first component member is coupled to the first coupling portion in an inclined state, the pin portion relative to the rail portion is separated by the gap. Interference can be avoided.

Furthermore, in this case, it is preferable that the insertion hole has a dimension in a direction in which the rail portion extends is larger than a dimension in a direction orthogonal to the rail portion.

¡When the inclination of the user's lower leg increases, the inclination of the pin portion of the first component member also increases. In this configuration, the prosthetic leg adapter is arranged so that the rail portion extends in a direction corresponding to the direction in which the inclination of the user's lower leg is large, and the displacement of the connecting portion of the first component member due to the large inclination of the lower leg Even if the pin portion has a large inclination according to the inclination of the lower leg, the pin portion is arranged in the insertion hole having a large dimension along the extending direction of the rail portion. Interference between the part and the rail part can be effectively avoided.

Claims

Used for a prosthetic leg including a first component member having a connection portion and a second component member having a connection portion, and connecting the connection portion of the first component member and the connection portion of the second component member. An adapter for a prosthetic leg,
A first coupling portion into which the connection portion of the first component member is inserted and coupled;
The first coupling portion is integrally formed, extends in a direction perpendicular to the insertion direction of the connection portion of the first component member, protrudes from the first coupling portion, and has a first outer surface and a second outer surface. And a rail portion in which the first outer surface and the second outer surface are inclined surfaces in which the interval gradually increases along the insertion direction;
A second coupling part that can be coupled to the connection part of the second component member;
A first inner surface formed integrally with the second coupling portion and facing the first outer surface of the rail portion; and a second inner surface facing the second outer surface of the rail portion; A slide portion slidable with respect to the rail portion in a state where the first inner side surface and the first outer side surface are engaged and the second inner side surface and the second outer side surface are engaged;
An artificial leg adapter comprising: a fixing portion for fixing the position of the slide portion with respect to the rail portion.
The prosthetic leg adapter according to claim 1,
The first coupling portion is arranged in a first orientation when coupled to the connection portion of the first component member and in a second orientation opposite to the first orientation. Is at least selectable,
The rail part is an adapter for a prosthetic leg, in which only one end side protrudes from the first coupling part.
The prosthetic leg adapter according to claim 1,
An extension portion extending further outward from the first and second outer surfaces of the rail portion;
The first coupling portion is arranged so as to surround the outer periphery of the connection portion of the first component member, and is screwed into an enclosure portion provided with a screw hole penetrating the inside and outside thereof, and a screw hole of the enclosure portion And an attachment screw that presses against the outer surface of the connection portion of the first component member and fixes the connection portion to the first coupling portion,
The range in which the extension portion is provided includes at least a position corresponding to the screw hole of the enclosure portion,
The slide portion is disposed outside the rail portion and has the first inner surface, and the second outer portion is disposed outside the rail portion and has the second inner surface. And
The first and second outer portions are prosthetic legs in which the surfaces facing the extended portion at both ends in the extending direction of the rail portion are inclined surfaces that are separated from the extended portion toward the end portion. Adapter.
The prosthetic leg adapter according to claim 1,
The rail portion includes a first rail portion having the first outer surface and a second rail portion having the second outer surface,
The first rail part and the second rail part are arranged parallel to each other and spaced apart in the width direction,
The slide portion is disposed adjacent to the first rail portion and has a first outer portion having the first inner surface, and is disposed adjacent to the second rail portion and the second inner portion. A second outer portion having side surfaces, a bridging portion that connects the first outer portion and the second outer portion, and the second coupling portion is integrally formed; the first rail portion; and the second rail portion. A prosthetic leg adapter having a reinforcing part provided in the bridging part so as to enter between.
The prosthetic leg adapter according to claim 1,
An extending portion that extends further outward from the first and second outer surfaces of the rail portion;
The slide portion is disposed outside the first outer surface and has the first inner surface, and the slide portion is disposed outside the second outer surface and the second inner surface. A second outer portion having
The extending portion extends outward from the first outer surface continuously, extends from the first outer surface facing the first outer portion, and continuously extends from the second outer surface to the second outer surface. A second facing surface facing the portion,
The adapter for prosthetic legs, wherein the first facing surface and the second facing surface are inclined surfaces that gradually increase in distance as they go in the direction opposite to the insertion direction.
The prosthetic leg adapter according to claim 1,
The first component member is attached to a cut portion of a user's lower leg, and the connection portion of the first component member is disposed at a lower portion of the first component member,
The first coupling part is an adapter for a prosthetic leg that can be coupled with the connection part of the first component member in an obliquely inclined state.
The prosthetic leg adapter according to claim 6,
The first component member has a pin portion that protrudes downward from the connection portion of the first component member,
The rail portion is provided with an insertion hole into which the pin portion is inserted with a gap when the connection portion of the first component member is inserted into the first coupling portion and coupled. , Adapter for artificial leg.
In the adapter for artificial legs according to claim 7,
The insertion hole is an adapter for a prosthetic leg, wherein a dimension in a direction in which the rail part extends is larger than a dimension in a direction orthogonal to the rail part.