JP2014113299A - Artificial leg cover, and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an artificial leg cover enabling a user to smoothly bend a knee joint of an artificial leg, and to provide a method for manufacturing the same.SOLUTION: An artificial leg cover includes: a thigh socket cover part 2 having a first cylindrical body 3 where an inner diameter is sequentially made small from an upper edge 4 to a lower edge 5, and a first cut 6 extending from the upper edge 4 to the lower edge 5 along a central axis direction is formed; and a knee joint and lower thigh pipe cover part 20 having a second cylindrical body 21 where an upper end 22 is engageable with the lower end 5 of the first cylindrical body 3 in a loosely inserted state, an inner diameter is sequentially made small to large from the upper edge 22 to the nearly center, the inner diameter is sequentially made large to small from the nearly center to the lower edge 23, and a second cut 25 extending from the upper edge 22 to the lower edge 23 along a central axis direction is formed.

Description

  The present invention relates to a prosthetic leg cover and a method for manufacturing a prosthetic leg cover. Specifically, for example, the present invention relates to a prosthetic leg cover to be attached to an artificial leg having an endoskeleton structure and a method for manufacturing the prosthetic leg cover.

As this type of prosthetic leg cover, for example, a cover described in Patent Document 1 is known.
Specifically, as shown in FIG. 9, in a prosthetic leg 102 having a skeleton structure 101 inside and having an exterior covering the skeleton structure 101, it is divided into two parts up and down with the knee axis 103 of the exterior as a boundary.
An elastic band 107 that expands and contracts in the vertical direction is attached to the patella side 106 at the boundary between the two above-knee exterior 104 and the below-knee exterior 105, and a patella pad 108 is attached to the inner surface of the elastic band 107.

  Further, as shown in FIG. 10, the prosthetic leg cover described in Patent Document 2 includes a thigh module 110 that is attached to the thigh socket, a crus module 112 that is attached to the crus pipe 111, and a crus module 112. And a patella module 113 supported so as to be swingable.

Utility Model Registration No. 3103785 JP 2007-68855 A

  However, in the prosthetic leg cover described in Patent Document 1, an elastic band that expands and contracts in the vertical direction is attached to the patella side of the boundary portion between the above-knee exterior and the below-knee exterior, so that the movement of the knee is heavy and the play is free. The bending angle of the knee joint in the leg stage cannot be obtained sufficiently.

  Further, in the prosthetic leg cover described in Patent Document 2, the structure of each module is complicated, the assembly and removal are not easy, and it takes time to adjust the alignment. Furthermore, it is difficult to employ a turntable that imparts a function of turning a prosthetic leg in Patent Document 1 and Patent Document 2.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a prosthetic leg cover that can smoothly bend a knee joint of a prosthetic leg and a method for manufacturing the prosthetic leg cover.

  In order to achieve the above object, the prosthetic leg cover according to the present invention has a first cut having an inner diameter that gradually decreases from the upper end to the lower end and that extends from the upper end to the lower end along the central axis direction. A thigh socket cover portion having a first cylindrical body formed with an upper end side that can be loosely fitted into the lower end side of the first cylindrical body, and from the upper end toward the approximate center. The inner diameter is gradually increased from small to large, the inner diameter is gradually decreased from large to small from substantially the center toward the lower end, and a second cut is formed extending from the upper end to the lower end along the central axis direction. A knee joint having two cylindrical bodies and a cover part for a lower leg pipe.

  Here, the outer circumference of the thigh socket in which the outer diameter of the first cylindrical body of the thigh socket cover portion is gradually reduced from the upper end to the lower end as the inner diameter is sequentially reduced from the upper end to the lower end. The surface can be closely attached.

  In addition, the first cylinder of the thigh socket cover portion is formed with the first cut extending from the upper end to the lower end along the central axis direction, so that it can be easily attached to and detached from the thigh socket. Become.

  In addition, the second cylinder of the knee joint and lower leg pipe cover part can be freely inserted into the lower end of the first cylinder so that the knee joint of the artificial leg is the first. By being divided at the lower end side of the cylindrical body and the upper end side of the second cylindrical body, the knee joint can be bent smoothly without resistance when the knee joint is bent.

  In addition, the inner diameter of the second cylindrical body of the knee joint and the lower leg pipe cover part gradually increased from small to large from the upper end toward the center, and gradually decreased from large to small from the substantially center to the lower end. By this, it becomes possible to attach according to the shape of the knee joint of the artificial leg and the lower leg pipe.

  In addition, the second cylindrical body of the knee joint and the lower leg pipe cover part is formed with the second cut extending from the upper end to the lower end along the central axis direction, so that the knee joint and the lower leg pipe can be easily attached and detached. Can be performed.

  Further, in the prosthetic leg cover according to the present invention, when the first cylinder and the second cylinder are made of a thermoplastic material, they can be easily adapted to the shapes of the thigh socket, the knee joint, and the crus pipe. It becomes possible to process.

  Further, in the prosthetic leg cover according to the present invention, when the thermoplastic material is a polyethylene material, it is excellent in shape retention, rigidity and elasticity and can be colored freely.

  Further, in the prosthetic leg cover according to the present invention, the thigh socket cover part can be connected in a state where the areas near the opposing edge parts of the first cylinder forming the first cut are overlapped. When the connecting means is provided, the inner diameter of the first cylindrical body can be adjusted according to the outer diameter of the thigh socket. Further, the first connecting means is made of, for example, a planar tape that can be crimped to the surface where the region is in contact with each other, so that the overlapping region can be easily attached and detached, and is closely held on the outer peripheral surface of the thigh socket. Is possible.

  Further, in the prosthetic leg cover according to the present invention, the knee joint and the crus pipe cover part can be connected in a state where the regions near the opposing edge parts of the second cylindrical body forming the second cut are overlapped. When the second connecting means is provided, the inner diameter of the second cylinder can be adjusted according to the outer diameter of the knee joint. Further, the second connecting means is made of, for example, a surface tape that can be crimped to the surface where the region is in contact with each other, so that the overlapping region can be easily attached and detached, and held tightly on the outer peripheral surface of the knee joint. Is possible.

  Further, in the prosthetic leg cover according to the present invention, in the case where the inner side surface of the first cylindrical body has the engaging means that can be engaged with the thigh socket to which the thigh socket cover portion is attached, In this case, the first cylinder can be held without sliding from the outer peripheral surface of the thigh socket.

  Further, in the prosthetic leg cover according to the present invention, when it has an overlapping piece part that extends to the lower end of the first cylindrical body and overlaps a part of the upper end side of the knee joint and lower leg pipe cover part, The knee joint is divided at the overlapping portion of the first cylindrical body and the upper end side of the second cylindrical body, so that the knee joint is protected and can be bent smoothly without resistance when the knee joint is bent. It becomes possible.

  Further, in the prosthetic leg cover according to the present invention, when a hole is opened at a predetermined position of the first cylindrical body, for example, a turntable locking mechanism provided in a thigh socket, or an inner socket locking mechanism This operation can be performed without removing the first cylindrical body portion.

  Further, in the prosthetic leg cover according to the present invention, when a detachable connection band for connecting the lower end of the thigh socket cover part and the upper ends of the knee joint and the lower leg pipe cover part is provided, It becomes possible to keep the space | interval of 1 cylinder and a 2nd cylinder constant.

  In order to achieve the above object, a prosthetic leg cover according to the present invention can be engaged with a thigh socket, and includes a thigh having a cylinder formed with a cut extending from the upper end to the lower end along the central axis direction. A socket cover portion, and a knee joint and a crus pipe cover portion that are engageable with the knee joint and the crus pipe and have a cylindrical body in which a cut extending from the upper end to the lower end along the central axis direction is formed.

  Here, the tubular body of the thigh socket cover part is engageable with the thigh socket, and a cut extending from the upper end to the lower end along the central axis direction is formed in the tubular body of the thigh socket cover part. Thus, it can be detachably attached to the outer peripheral surface of the thigh socket of the prosthetic leg.

  In addition, the cylinder of the cover part for the knee joint and the lower leg pipe can be engaged with the knee joint and the lower leg pipe, and the cylinder of the cover part for the knee joint and the lower leg pipe from the upper end along the central axis direction. By forming the cut extending to the lower end, it can be detachably attached to the knee joint and lower leg pipe of the artificial leg, and the thigh socket cover part and the knee joint and lower leg pipe cover part are divided. It becomes possible to bend smoothly without resistance when the knee joint is bent.

  In order to achieve the above object, a method for manufacturing a prosthetic leg cover according to the present invention includes a heated heat along the outer periphery of a thigh model created on the basis of the outer periphery of a thigh socket of an artificial leg having a skeletal structure. Forming a tubular thigh socket cover part formed with a cut extending from the upper end to the lower end along the central axis direction by pressing the plastic resin plate, and the shape of the knee joint and lower leg pipe of the skeletal structure prosthetic leg A cylindrical knee joint formed with a cut extending from the upper end to the lower end along the central axis direction by pressing a heated thermoplastic resin plate along the outer circumference of the knee joint and the lower leg pipe model created based on Forming a cover part for the lower leg pipe.

  Here, along the outer periphery of the thigh model created based on the outer periphery of the thigh socket of the artificial leg of the skeletal structure, a cut extending from the upper end to the lower end along the central axis direction by pressing the heated thermoplastic resin plate By forming the formed cylindrical thigh socket cover part, the thigh socket cover part can be easily removed from the thigh model, so that the manufacturing time can be shortened.

  In addition, along the outer circumference of the knee joint and lower leg pipe models created based on the shape of the knee joint and lower leg pipe of the skeletal structure prosthetic leg, a heated thermoplastic resin plate is pressed against the upper end along the central axis direction. It is possible to easily remove the knee joint and crus pipe cover from the knee joint and crus pipe model by molding the cylindrical knee joint and crus pipe cover part with cuts extending from the base to the bottom. Time can be shortened.

  Further, the thigh socket cover part and the knee joint and crus pipe cover part are manufactured in a split shape, so that when the knee joint is bent, it can be smoothly bent without resistance. .

  In order to achieve the above object, a method for manufacturing a prosthetic leg cover according to the present invention includes a step of creating a thigh model on the basis of an outer periphery of a thigh socket of a prosthetic leg having a skeletal structure, A step of creating a knee joint and crus pipe model based on the shape of the knee joint and crus pipe, and a heated thermoplastic resin plate against the outer periphery of the thigh model and from the upper end along the central axis direction A step of forming a cylindrical thigh socket cover part with a cut extending to the lower end, and along the outer circumference of the knee joint and crus pipe model, a heated thermoplastic resin plate is pressed along the central axis direction Forming a cylindrical knee joint having a cut extending from the upper end to the lower end and a cover part for the lower leg pipe.

  Here, by creating a thigh model based on the outer periphery of the thigh socket of the artificial leg of the skeletal structure, it is possible to form a cylindrical thigh socket cover portion that matches the shape of the thigh socket.

  In addition, by creating knee joint and lower leg pipe models based on the shape of knee joints and lower leg pipes of skeletal prostheses, cylindrical knee joints and lower leg pipe covers that match the shape of knee joints and lower leg pipes It becomes possible to form the part.

  In addition, by forming a cylindrical thigh socket cover part formed with a cut extending from the upper end to the lower end along the central axis direction by pressing the heated thermoplastic resin plate along the outer periphery of the thigh model, Since the thigh socket cover can be easily removed from the thigh model, the production time can be shortened.

  A cylindrical knee joint and crus pipe cover in which cuts extending from the upper end to the lower end along the central axis direction are formed by pressing a heated thermoplastic resin plate along the outer circumference of the knee joint and crus pipe model By forming the portion, the knee joint and crus pipe cover can be easily removed from the knee joint and crus pipe model, so that the production time can be shortened.

  Further, the thigh socket cover part and the knee joint and crus pipe cover part are manufactured in a split shape, so that when the knee joint is bent, it can be smoothly bent without resistance. .

According to the prosthetic leg cover of the present invention, the knee joint of the prosthetic leg can be bent smoothly.
Moreover, according to the prosthetic leg cover manufacturing method, it is possible to manufacture a prosthetic leg cover that can smoothly bend the knee joint of the prosthetic leg.

It is a schematic diagram for demonstrating an example of the cover for artificial legs to which this invention is applied. It is a schematic diagram for demonstrating an example of the cover part for thigh sockets in the cover for artificial legs to which this invention is applied. It is a schematic diagram for demonstrating an example of the knee joint in the prosthetic leg cover to which this invention is applied, and the cover part for lower leg pipes. It is a schematic diagram for demonstrating an example of the artificial leg of the frame | skeleton structure which attaches the cover for artificial legs to which this invention is applied. It is a schematic diagram for demonstrating an example of the attachment state of the cover for artificial legs to which this invention is applied. It is a schematic diagram for demonstrating an example of the turning state of the cover for artificial legs to which this invention is applied. It is a schematic diagram for demonstrating an example of the shaping | molding method of the thigh model used for the manufacturing method of the cover for artificial legs to which this invention is applied. It is a schematic diagram for demonstrating an example of the shaping | molding method of the knee joint and lower leg pipe model used for the manufacturing method of the cover for artificial legs to which this invention is applied. It is a schematic diagram for demonstrating an example of the conventional cover for artificial legs. It is a schematic diagram for demonstrating the other example of the conventional cover for artificial legs.

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

<First Embodiment>
FIG. 1 is a schematic view for explaining an example of a prosthetic leg cover to which the present invention is applied.

  The prosthetic leg cover 1 shown here includes a thigh socket cover part 2 attached to a thigh socket (not shown) in a skeletal structure artificial leg, a knee joint and a knee joint attached to a knee joint and a lower leg pipe (not shown). It is comprised from the cover part 20 for lower leg pipes.

  Next, FIG. 2 (A) is a schematic side view for explaining an example of a thigh socket cover portion in the prosthetic leg cover to which the present invention is applied, and FIG. 2 (B) is a thigh in the prosthetic leg cover to which the present invention is applied. FIG. 2 (C) is a schematic end view for explaining an example of the thigh socket cover part in the prosthetic leg cover to which the present invention is applied.

  Here, the thigh socket cover portion 2 is composed of a first cylindrical body 3 formed of a polyethylene thermoplastic material.

  The first cylinder 3 has an inner diameter that gradually decreases from the upper end 4 toward the lower end 5, and a first cut 6 that extends from the upper end 4 to the lower end 5 along the central axis direction is formed.

  In addition, regions (7, 7A) in the vicinity of opposing edges of the first cylinder 3 that form the first cuts 6 are sequentially arranged in the radial direction of the first cylinder 3. Further, a planar tape (8, 8A) that can be pressure-bonded to each other is attached to the surface that is in contact with the region (7, 7A) as a first connection means that can be connected in a state where the regions (7, 7A) are stacked. Yes.

  Further, as shown in FIG. 1, a planar tape 28 attached to one end side of the connecting band portion 11 is crimped to the outer peripheral surface of the lower portion where the regions (7, 7A) of the thigh socket cover portion 2 overlap. A possible planar tape 9 is attached.

  A planar tape 10 is attached as an engaging means that can be engaged with a thigh socket (not shown) along the inner peripheral surface on the upper end 4 side of the first cylindrical body 3.

  In addition, on the front side of the lower end 5 of the first cylindrical body 3, an overlapping piece portion 12 extending downward in a semicircular shape is formed.

  In addition, a hole 13 is opened on the lower outer peripheral surface of the first cylindrical body 3 at a position that is the same position as a lock mechanism (not shown) of the turntable. Further, a hole portion 13A is opened on the upper outer peripheral surface of the first cylindrical body 3 at the same position as an inner socket locking mechanism (not shown).

  3A is a schematic side view for explaining an example of a knee joint and a lower leg pipe cover portion in a prosthetic leg cover to which the present invention is applied, and FIG. 3B is a prosthetic leg cover to which the present invention is applied. FIG. 3C is a schematic rear view for explaining an example of the knee joint and the lower leg pipe cover portion in FIG. 3, and FIG. 3C is an explanatory view of an example of the knee joint and lower leg pipe cover portion in the prosthetic leg cover to which the present invention is applied. It is an end surface schematic diagram.

  The knee joint and crus pipe cover portion 20 shown here is composed of a second cylindrical body 21 formed of a thermoplastic material of polyethylene material.

  The second cylinder 21 has an outer diameter whose upper end 22 side can be fitted into the back surface of the overlapping piece portion 12 formed on the lower end side of the first cylinder 3 so as to be loosely inserted.

  Here, the inner diameter is sequentially increased from small to large from the upper end 22 of the second cylindrical body 21 toward the substantially center, the inner diameter is sequentially decreased from large to small from the substantially central to the lower end 23, and from the upper end 22. A second cut 25 extending to the lower end 23 is formed.

  Regions (26, 26 A) near the opposing edges of the second cylinder 21 that form the second cuts 25 are sequentially arranged in the radial direction of the second cylinder 21. Further, as a second connection means that can be connected in a state where the regions (26, 26A) are overlapped, a surface tape (27, 27A) that can be crimped to each other is attached to a surface that contacts the regions (26, 26A). Yes.

  Further, on the outer peripheral surface of the upper portion where the regions (26, 26A) of the knee joint and the lower leg pipe cover portion 20 overlap, as shown in FIG. A planar tape 9A that can be crimped to 28A is attached.

  Hereinafter, the attachment state of the prosthetic leg cover to which the present invention is applied will be described.

  FIG. 4 is a schematic diagram for explaining an example of a prosthetic leg having a skeleton structure to which a prosthetic leg cover to which the present invention is applied is attached, and FIG. 5 is a schematic diagram for explaining an example of an attachment state of the prosthetic leg cover to which the present invention is applied. It is.

  In the artificial leg 30 shown here, one end of a knee joint 33 is attached to the lower end of a thigh socket 31 formed in a thigh shape via a turntable 32. As shown in FIG. 2, the planar tape 10 attached to the predetermined portion of the thigh socket 31 along the inner peripheral surface on the upper end 4 side of the first cylindrical body 3 of the thigh socket cover portion 2. A planar tape 10 </ b> A that can be engaged with is provided around.

  Further, the upper end of the lower leg pipe 34 is connected to the other end of the knee joint 33, and a foot 35 is attached to the lower end of the lower leg pipe 34.

  Here, the knee joint 33 can be rotated 90 degrees in the circumferential direction by the turntable 32, and the lower leg pipe 34 can be horizontally rotated from the knee joint 33, so that a crossed cross can be formed. Such a conversion operation is performed by turning on and off a lock mechanism (not shown) provided on the turntable 32.

  When attaching the thigh socket cover 2 to the thigh socket 31 of the prosthetic leg 30 having such a structure, the first cut 6 of the first cylindrical body 3 is expanded and fitted to the outer peripheral surface of the thigh socket 31.

  Here, the inner periphery on the upper end 4 side of the first cylindrical body 3 is attached to the planar tape 10A attached to the outer peripheral surface of the thigh socket 31 so that the first cut 6 is the center on the back side of the thigh socket 31. The planar tape 10 attached along the surface is overlapped and engaged.

  Further, the planar tapes (8, 8A) are engaged with each other in a state where the opposing regions (7, 7A) of the first cuts 6 are overlapped.

  Next, when the knee joint and the lower leg pipe cover 20 are attached from the knee joint 33 of the prosthetic leg 30 to the lower leg pipe 34, the second cut 25 of the second cylindrical body 21 is expanded and the knee joint 33 is extended. Fit the lower leg pipe 34.

  Here, the lower end 23 of the knee joint and crus pipe cover portion 20 is configured to abut against the instep surface of the foot portion 35 of the artificial leg 30 to form an ankle.

  Further, the upper end 22 of the knee joint and crus pipe cover part 20 is attached so as to be fitted to the outer peripheral surface of the knee joint 33 of the artificial leg 30 and the overlapping piece part 12 below the thigh socket cover part 2 is attached. It becomes the form piled up so that it may become the back side.

Further, the surface tape 9 of the thigh socket cover portion 2 and the surface tape 9A of the knee joint and crus pipe cover portion 20 are connected to the surface tape 28 and the surface tape 28A provided at both ends of the connecting band portion 11. Attach at.
As a result, the thigh socket cover part 2 and the knee joint and crus pipe cover part 20 are connected by the connecting band part 11.

  By attaching the thigh socket cover 2 and the knee joint and crus pipe cover 20 to the artificial leg 30 in this way, the thigh socket 31, the turntable 32, the knee joint 33 and the crus pipe 34 are made of polyethylene material. It becomes possible to cover with a thermoplastic material.

  Here, since the lower end 5 side of the thigh socket cover portion 2 and the upper end 22 of the knee joint and crus pipe cover portion 20 are divided, the flexure is freely bent so as not to hinder the movement of the artificial leg 30 during walking. It becomes possible.

  Further, as shown in FIG. 6, even when the knee joint 33 and the lower leg pipe 34 are rotated by a turntable (not shown), the lower end side of the thigh socket cover part 2 and the knee joint and lower leg pipe cover part. Since the upper end of 20 is divided, it can be rotated without hindrance.

  In the present embodiment, the first cylinder and the second cylinder are formed of a thermoplastic material, but are flexible and have rigidity and shape retention. If present, it is not always necessary to form the thermoplastic material.

  In the present embodiment, the thermoplastic material is formed of a polyethylene material. However, the thermoplastic material is not necessarily formed of a polyethylene material as long as it has thermoplasticity.

  Further, in the present embodiment, the thigh socket cover portion is connected to the first connecting means that can be connected in a state in which regions near the opposing edge portions of the first cylinder forming the first cut are overlapped. However, it is not always necessary to enable connection in a state where the regions near the opposing edges of the first cylindrical body are overlapped.

  However, the first is that the inner diameter of the first cylinder can be adjusted in accordance with the outer diameter of the thigh socket by overlapping regions near the opposing edges of the first cylinder forming the first cut. It is desirable to be able to connect in the state where the regions near the opposite edges of the cylinder are overlapped.

  Further, in the present embodiment, the knee joint and the lower leg pipe cover portion can be connected in a state where the regions near the opposing edge portions of the second cylinder forming the second cut are overlapped. However, it is not always necessary to enable connection in a state where the regions near the opposing edges of the second cylindrical body are overlapped.

  However, it is possible to adjust the inner diameter of the second cylinder according to the outer diameters of the knee joint and the crus pipe by overlapping regions near the opposing edges of the second cylinder forming the second cut. It is desirable to be able to connect in the state where the regions near the opposing edges of the second cylindrical body are overlapped.

  Further, in the present embodiment, the thigh socket cover portion has engaging means that can be engaged with the thigh socket to which the thigh socket cover portion is attached on the inner surface of the first cylindrical body. However, as long as the first cylinder has means capable of engaging with the thigh socket, it is not always necessary to provide the engaging means on the inner surface of the first cylinder.

  Further, in the present embodiment, the thigh socket cover portion has an overlapping piece portion that overlaps with a part of the upper end side of the knee joint and the crus pipe cover portion extending to the lower end of the first cylindrical body. However, as long as the upper end side of the second cylindrical body can be fitted into the lower end side of the first cylindrical body in a loosely inserted manner, it is not always necessary to form the overlapping piece portion.

  Further, in the present embodiment, the thigh socket cover portion has a hole portion opened at a predetermined position of the first cylindrical body, but adjustment of the lock mechanism of the turntable or the lock mechanism of the inner socket However, if it can be performed without removing the thigh socket cover, it is not always necessary to provide a hole.

  Further, in the present embodiment, a detachable connection band portion connected to the lower end of the thigh socket cover portion and the upper ends of the knee joint and crus pipe cover portions is provided. As long as it can maintain that the overlapping piece part of a lower end and the upper end side of the cover part for knee joints and crus pipes can be maintained, it is not necessarily required to provide a connection band part.

  In the artificial leg cover having the above configuration, the first cylinder and the second cylinder are formed of a thermoplastic resin such as a polyethylene material, so that deterioration due to use can be minimized.

  In addition, since it has flexibility, it can be easily attached to and detached from the artificial leg, and alignment adjustment and the like can be performed efficiently.

  In addition, by dividing into a first cylinder and a second cylinder, a turntable that enables knee bending can be incorporated as needed, and it is smart and free to color, and can walk Sometimes, a prosthetic leg cover that does not feel uncomfortable can be realized.

<Second Embodiment>
FIG. 7A is a schematic diagram for explaining an example of a method for forming a thigh model used in a method for manufacturing a prosthetic leg cover to which the present invention is applied, and FIG. 7B is a diagram for an artificial leg to which the present invention is applied. It is a schematic diagram for demonstrating the manufacturing process of the cover part for thigh sockets by the thigh model used for the manufacturing method of a cover.

  In an example of a method for manufacturing a thigh socket cover portion to which the present invention is applied (second embodiment), first, the thigh socket 31, the turntable 32, and the knee joint as shown in FIG. Measure 33 shapes and dimensions. Based on this data, a thigh model 40 having an outer diameter that gradually decreases from the upper end to the lower end is created (see FIG. 7A).

  Subsequently, the thermoplastic resin plate 41 made of heat-softened polyethylene is pressed against the outer peripheral surface of the thigh model 40 created in this manner, and the regions of both side edges (42, 42A) of the thermoplastic resin plate 41 overlap. In this way, winding is performed (see FIG. 7B).

  Accordingly, as shown in FIGS. 2A, 2B, and 2C, the inner diameter is gradually reduced from the upper end 4 toward the lower end 5, and the front side of the lower end 5 is semicircular. The first cylindrical body 2 is formed in which the overlapping piece portion 12 extending downward in the shape is formed and the first cut 6 extending from the upper end 4 to the lower end 5 along the central axis direction is formed. Can do.

  Further, a planar tape (8, 8A) that can be crimped to each other is attached to the surface of the first cut 6 where the opposing regions (7, 7A) are in contact.

  Further, as shown in FIG. 1, a planar tape 28 attached to one end side of the connecting band portion 11 can be crimped to the outer peripheral surface of the lower portion where the regions (7, 7A) of the thigh socket cover portion 2 overlap. A flat sheet tape 9 is attached.

  Moreover, the planar tape 10 which can be fastened to a thigh socket (not shown) is attached along the inner peripheral surface by the side of the upper end 4 of the 1st cylinder 3. As shown in FIG.

  Further, on the lower outer peripheral surface of the first cylindrical body 3, a hole 13 is formed at the same position as the lock mechanism (not shown) of the turntable, and the upper outer peripheral surface of the first cylindrical body 3. Open a hole 13A at the same position as the inner socket locking mechanism (not shown).

  Next, FIG. 8 (A) is a schematic diagram for explaining an example of a method for forming a knee joint and a crus pipe model used in a method for manufacturing a prosthetic leg cover to which the present invention is applied, and FIG. It is a schematic diagram for demonstrating the manufacturing process of the knee joint and lower leg pipe cover part by the knee joint and lower leg pipe model used for the manufacturing method of the prosthetic leg cover to which the present invention is applied.

  In an example (second embodiment) of a method for manufacturing a knee joint and crus pipe cover portion to which the present invention is applied, first, as shown in FIG. 4 using, for example, plaster, the knee joint 33 and the crus pipe 34 are used. Measure the shape and dimensions. Based on this data, a knee joint and crus pipe model 43 is created in which the outer diameter is gradually increased from small to large from the upper end to the approximate center, and the outer diameter is sequentially increased from small to large from the approximate center to the lower end. (See FIG. 8A).

  Subsequently, the thermoplastic resin plate 41A made of heat-softened polyethylene material is pressed against the outer peripheral surface of the knee joint and crus pipe model 43 created as described above, and both side ends (42, 42A) of the thermoplastic resin plate 41A. Are wound in such a manner that the regions of (2) overlap (see FIG. 8B).

  As a result, as shown in FIGS. 3A, 3B, and 3C, the inner diameter is gradually increased from small to large from the upper end 22 toward the approximate center, and from the approximate center to the lower end 23. The second cylinder 21 can be formed in which the inner diameter is gradually increased from the small toward the small and the second cut 25 extending from the upper end 22 to the lower end 23 is formed.

  Furthermore, the planar tape (27, 27A) that can be crimped to each other is attached to the surface of the second cut 25 where the opposing regions (26, 26A) are in contact.

  Also, on the outer peripheral surface of the upper part where the regions (26, 26A) of the knee joint and crus pipe cover portion 20 overlap, as shown in FIG. A planar tape 9A that can be crimped to each other is attached.

  In addition to the method described in detail in the present embodiment, the method of heat shaping the thermoplastic resin is not limited to that described in the present embodiment, and the thermoplastic resin plate is heated and softened by using an oven or the like to manually form the thigh model, the knee joint, or the crus pipe model. It can also be molded along. It is also possible to use a suction molding method using vacuum.

  In the method for manufacturing a prosthetic leg cover having the above-described configuration, the first cylinder and the second cylinder in the prosthetic leg cover are made of a thermoplastic material so that the thigh socket can be used from the thigh model, the knee joint, or the thigh pipe model. The operation of removing the cover part or the knee joint and the lower leg pipe cover part is facilitated.

  As a result, the manufacturing time can be shortened, the working efficiency can be improved, the parts are simple, there are few failures, coloring can be performed freely, and a prosthetic leg cover having a long product life can be manufactured at low cost.

DESCRIPTION OF SYMBOLS 1 Prosthetic leg cover 2 Thigh socket cover part 3 1st cylinder 4 Upper end 5 Lower end 6 1st notch 7, 7A Area | region 8, 8A Surface tape 9, 9A Surface tape 10, 10A Surface tape 11 Connection belt Part 12 Overlapping piece part 13, 13A Hole part 20 Knee joint and lower leg pipe cover part 21 Second cylinder 22 Upper end 23 Lower end 25 Second cut 26, 26A Area 27, 27A Planar tape 28, 28A Planar tape 30 Prosthetic leg 31 Thigh socket 32 Turntable 33 Knee joint 34 Lower leg pipe 35 Foot 40 Thigh model 41, 41A Thermoplastic resin plates 42, 42A Both ends 43 Knee joint and lower leg pipe model

Claims (12)

A thigh socket cover portion having a first tubular body in which an inner diameter is sequentially reduced from the upper end toward the lower end and a first cut is formed extending from the upper end to the lower end along the central axis direction;
The upper end side can be loosely inserted into the lower end side of the first cylindrical body, and the inner diameter is gradually increased from small to large from the upper end to the approximate center, and the inner diameter is increased from the approximate center to the lower end. A knee joint having a second cylindrical body formed with a second cut extending from the upper end to the lower end along the central axis direction, and a lower leg pipe cover portion. Cover. The prosthetic leg cover according to claim 1, wherein the first cylindrical body and the second cylindrical body are formed of a thermoplastic material. The prosthetic leg cover according to claim 2, wherein the thermoplastic material is a polyethylene material. The said thigh socket cover part has a 1st connection means which enables a connection in the state which piled up the area | region of the edge part vicinity of the said 1st cylinder which forms the said 1st notch. The prosthetic leg cover according to claim 2 or claim 3. The knee joint and crus pipe cover portion includes second connection means that enables connection in a state where regions near the opposing edge portions of the second cylinder forming the second cut are overlapped. The prosthetic leg cover according to claim 1, claim 2, claim 3 or claim 4. 5. An engagement means that can be engaged with a thigh socket on which the thigh socket cover portion is attached is provided on an inner surface of the first cylindrical body. Or the cover for artificial legs of Claim 5. The first cylindrical body has an overlapping piece portion that extends to a lower end of the first cylindrical body and overlaps a part of the upper end side of the knee joint and crus pipe cover portion. The prosthetic leg cover according to claim 4, claim 5 or claim 6. The prosthetic leg cover according to claim 1, claim 2, claim 3, claim 5, claim 6, or claim 7, having a hole opened at a predetermined location of the first cylindrical body. . The detachable connection belt | band | zone part which connects the lower end of the said thigh socket cover part, and the upper end of the said knee joint and the cover part for crus pipes is provided. Claim 1, Claim 2, Claim 3, Claim 4. The prosthetic leg cover according to claim 5, claim 6, claim 7 or claim 8. A thigh socket cover portion having a cylindrical body that is engageable with the thigh socket and has a cut line extending from the upper end to the lower end along the central axis direction;
A prosthetic leg cover comprising: a knee joint and a lower leg pipe cover part that are engageable with a knee joint and a lower leg pipe and have a cylindrical body formed with a cut line extending from an upper end to a lower end along a central axis direction. A cut extending from the upper end to the lower end along the central axis direction was formed along the outer periphery of the thigh model created on the basis of the outer periphery of the thigh socket of the prosthetic leg of the skeletal structure by pressing the heated thermoplastic resin plate Forming a tubular thigh socket cover part;
A heated thermoplastic resin plate is pressed against the outer circumference of the knee joint and lower leg pipe model created based on the shape of the knee joint and lower leg pipe of the skeletal structure prosthesis, and the upper end from the lower end along the central axis direction. And a step of forming a tubular knee joint having a cut extending to the bottom and a cover part for a crus pipe. Creating a thigh model based on the outer periphery of the thigh socket of the skeletal structure prosthetic leg;
Creating a knee joint and lower leg pipe model based on the shape of the knee joint and lower leg pipe of the prosthetic leg of the skeleton structure;
A step of forming a tubular thigh socket cover part in which a cut extending from the upper end to the lower end along the central axis direction is formed by pressing a heated thermoplastic resin plate along the outer periphery of the thigh model,
A cylindrical knee joint and crus pipe cover part in which cuts extending from the upper end to the lower end along the central axis direction are formed by pressing a heated thermoplastic resin plate along the outer periphery of the knee joint and crus pipe model. A method for manufacturing a prosthetic leg cover.

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