JP2011050514A - Measuring device for artificial leg assembly - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an epoch-making measuring device for artificial leg assembly, which achieves unprecedented action effects. <P>SOLUTION: The device measures the appropriate position of a lower side structure part 2 relative to an upper side structure part 1 in an artificial leg F. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a measuring device for assembling a prosthetic leg.

  According to Japanese Patent Application No. 2008-171049, the applicant of the present invention is connected to the upper structure portion 31 (socket portion) attached to the body (thigh cut end portion of the cut leg), and to the grounding portion connected to the upper structure portion 31 at the lower end portion. Prosthetic foot F ′ (femoral prosthesis) formed by connecting lower structure portion 32 (crus prosthesis portion) having (foot portion) is proposed, and upper structure portion 31 and lower structure constituting this prosthetic foot F ′ are proposed. The upper part 31 is not optimally attached to the body of the connecting part 38 of the part 32 because it does not fit the body shape (skeleton) of the user or the body is deformed due to growth after being attached to the body. An angle adjustment function is provided in consideration of the case where the mounting state is not an angle as designed (see FIG. 10).

  Specifically, the connecting portion 38 is provided with a projecting portion 34 having a square cross section on the lower structure portion 32, and a recessed fitting connecting portion 35 on the upper structure portion 31, and the projecting portion 34 has a ring member. 36 is provided, and the protruding portion 34 is disposed in the ring hole 36c of the ring member 36, and each of the four through holes 36b provided at equal intervals (every 90 degrees) on the peripheral surface portion of the ring member 36 is provided. A support member 37 that supports the protruding portion 34 in the ring hole 36c is provided, and the ring member 36 is screwed into the fitting coupling portion 35.

  Accordingly, the support member 37 is protruded by an appropriate amount so as to dispose the ring member 36 at an optimum angle with respect to the protrusion 34, and the protrusion 34 is sandwiched between the upper structure 31 and the upper structure 31. The lower structure part 32 can be connected in an optimal state suitable for the body (Note that even if the body grows and deforms after being attached to the body, The angle of the ring member 36 may be adjusted.)

  In addition, since the base end portion of the support member 37 is supported by the fitting coupling portion 35, the support member 37 is reliably prevented from moving away from the projecting portion 34 by repeated use, and thus adjustment is performed. The problem of changing the angle does not occur.

  Therefore, good walking can always be performed.

  By the way, the connecting portion 38 of the above-mentioned prosthetic foot F 'has the following problems.

  That is, when the upper structure portion 31 and the lower structure portion 32 are connected via the connecting portion 38, the protruding portion 34 in the ring hole 36b of the ring member 36 is supported by the support member 37, and in this state, the fitting is performed. The ring member 36 is screwed into the connecting portion 35. In order to obtain sufficient connection strength, the ring member 36 is completely until the front end surface 36A of the ring member 36 contacts the bottom surface 35A of the concave fitting connecting portion 35. It is good to make it screw-fit. As shown in FIG. 10, the ring member 36 is not completely screwed into the fitting connection portion 35, and a gap is formed between the tip surface 36 A of the ring member 36 and the bottom surface 35 A of the fitting connection portion 35. In such a state, the ring member 36 is screwed in the loosening direction, and the threaded grooves 35a, 36a of the fitted connecting portion 35 and the ring member 36 are easily cut and easily damaged. I can't get it.

  However, as described above, when the front end surface 36A of the ring member 36 is completely screwed and fitted until it comes into contact with the bottom surface 35A of the concave fitting coupling portion 35, the lower structure portion 32 is in an appropriate direction (generally the body (Front direction), and may be in a mounted state inclined outward or inward. This is due to the difference in various conditions such as how to provide the fitting connection portion 35 with respect to the upper structure portion 31 and how to provide the screw grooves 35a and 36a of the fitting connection portion 35 and the ring member 36. The rotation stop position of the ring member 36 when the ring member 36 is completely screwed to the fitted connection portion 35 (the position where the tip surface 36A of the ring member 36 abuts the bottom surface 35A of the fitted connection portion 35) is as follows. Because it will be different.

  Therefore, in the prior art, when such a problem occurs, the ring member 36 is trimmed so that the length of the ring member 36 is shortened and the ring member 36 is further adjusted to be screwed. Although this corresponds to the inclination of the lower structure 32, this adjustment is very troublesome. In addition, for example, a method of preparing a plurality of ring members 36 and selecting the right one out of them is conceivable. However, this is wasteful and extremely expensive.

  The present invention provides a measuring device for assembling a prosthetic foot that can connect an upper structure portion and a lower structure portion at an appropriate position very easily as a result of intensive studies focusing on the above-described problems.

  The gist of the present invention will be described with reference to the accompanying drawings.

  One of the upper structure portion 1 attached to the body and the lower structure portion 2 connected to the upper structure portion 1 and having the grounding portion 3 at the lower end portion is a protruding portion 4 and the other is a recessed fitting connection portion 5. The protrusion 4 is provided with a ring member 6, and the protrusion 4 is disposed in a ring hole 6 c of the ring member 6, and is provided in the peripheral surface of the ring member 6. The hole 6b is provided with a support member 7 that supports the protruding portion 4 in the ring hole 6c, and the ring member 6 is configured to be screwed and fitted into the fitting connection portion 5. F is a measuring device for measuring an appropriate position of the lower structure portion 2 with respect to the upper structure portion 1 in F, and has a screw fitting portion 9 that is screwed into the fitting connecting portion 5 at one end. The base 12 is provided with a hole 12b at the other end, and the angle memory 11 is provided around the hole 12b. A fitting part 14B fitted into the hole 12b at the other end, a memory instruction part 13 for indicating the angle memory 11 around the knob 14A, and a reference instruction part 19 for indicating a reference position; The reference angle memory 11A of the angle memory 11 is provided with reference to the end 9a ′ of the screw groove 9a formed in the screw fitting portion 9. The present invention relates to a measuring device for assembling a prosthetic foot.

  2. The measuring apparatus for assembling a prosthetic leg according to claim 1, wherein the angle memory 11 indicates a rotation angle of the rotating body 14, and has a predetermined angle in a range of at least 90 degrees from the reference angle memory 11A. A memory is provided for each, and there is one reference instruction unit 19 and three memory instruction units 13, and these are provided at intervals of 90 degrees. The present invention relates to a measuring device for assembling a prosthetic leg.

  Further, in the measuring device for assembling a prosthetic leg according to any one of claims 1 and 2, the fitting length of the screw fitting portion 9 is such that the tip surface 9A of the screw fitting portion 9 The measuring device for assembling a prosthetic foot is characterized in that the length is set so as to be able to be screwed until it contacts the bottom surface 5A of the fitting connection portion 5.

  The prosthetic leg measuring apparatus according to any one of claims 1 to 3, wherein the knob 14A is knurled to prevent slipping. It is concerned.

  Since the present invention is configured as described above, it is possible to easily and surely obtain an optimal mounting state of a prosthetic leg that can be walked satisfactorily, and the measurement for an epoch-making prosthetic leg that exhibits an unprecedented action and effect is obtained. It becomes a device.

It is explanatory drawing of the artificial leg F. FIG. It is a disassembled perspective view explaining the connection part 8 of the artificial leg F. FIG. It is explanatory drawing of the principal part which concerns on a present Example. It is explanatory sectional drawing of the principal part which concerns on a present Example. It is operation | movement explanatory drawing of a present Example. It is use condition explanatory drawing of a present Example. It is use condition explanatory drawing of a present Example. It is explanatory sectional drawing of the principal part which concerns on a present Example. It is explanatory sectional drawing of the connection part 8 of the artificial leg F manufactured using the present Example. It is sectional drawing which shows the connection state with a problem of the connection part 8 of the artificial leg F. FIG.

  Embodiments of the present invention considered to be suitable will be briefly described with reference to the drawings.

  The inventor pays attention to the point that the above-mentioned problems can be solved if the through-hole 6b provided in the ring member 6 constituting the connecting portion of the artificial leg F can be easily and accurately provided at an appropriate position. completed.

  Specifically, when the proper position of the through hole 6b provided in the ring member 6 is measured using the present invention having the above-described configuration, the fitting fitting portion 5 is screwed into the fitting connecting portion 5 provided in the upper structure portion 1. 9 is completely screwed and fitted until the front end surface 9A of the screw fitting part 9 comes into contact with the bottom face 5A of the concave fitting connection part 5, and the reference indicator 19 is desired by the wearer of the artificial leg in this state. When the direction, that is, the direction in which the lower structure portion 2 is desired to be turned when the rotating body 14 is rotated and the lower structure portion 2 is connected to the upper structure portion 1 is adjusted so that the reference indicating portion 19 points, The instruction unit 13 instructs an arbitrary memory of the angle memory 11.

  At this time, when it is read from the reference angle memory 11A how many times the arbitrary memory pointed by the memory instruction unit 13 is located, the number of times from the end 6a ′ of the screw groove 6a formed on the peripheral surface of the ring member 6 is increased. It can be ascertained whether the through hole 6b should be provided at the position.

  That is, according to the present invention, the screw fitting portion 9 is regarded as the ring member 6, and the screw fitting portion 9 is screwed and fitted to the fitting connecting portion 5 provided in the upper structure portion 1. When it is measured how many positions the direction in which the portion 2 is desired to be deviated from the end portion 9a ′ of the screw groove 9a of the screw fitting portion 9 is the same, the same applies from the end portion 6a ′ of the screw groove 6a of the ring member 6. In addition, an appropriate through hole 6b can be obtained by providing the through hole 6b at any number of positions.

  This is because the reference angle memory 11A serving as a reference when providing the angle memory 11 is provided with reference to the end 9a ′ of the screw groove 9a formed in the screw fitting portion 9. The angle obtained with reference to the end 9a ′ of the screw groove 9a provided in the fitting / fitting portion 9 is the position of the angle from the end 6a ′ of the screw groove 6a provided in the peripheral surface of the ring member 6 through the through hole 6b. It will be a proper position to provide.

  Therefore, it is only necessary to provide the through-hole 6b in the ring member 6 based on the information measured in the present invention, and an optimal wearing state capable of satisfactorily walking can be obtained easily and accurately.

  A specific embodiment of the present invention will be described with reference to the drawings.

  In this embodiment, an upper structure portion 1 (socket portion) attached to the body (thigh cut end portion of a cut leg), and a lower portion connected to the upper structure portion 1 and having a grounding portion 3 (foot portion) at the lower end portion. The appropriate position of the through-hole 6b of the ring member 6 in the connecting part 8 of the artificial leg F (thigh prosthesis) composed of the side structure part 2 (crus prosthesis part) is measured. In addition, a bending / extending portion 15 having a well-known structure that functions as a knee joint that enables bending / extension movement is provided on the upper portion of the lower structure portion 2. Reference numeral 16 denotes a cylinder device.

  First, the prosthetic foot F according to the present embodiment will be described in detail.

  The artificial leg F is connected to the upper structure portion 1 and the lower structure portion 2 via a connecting portion 8 having an angle adjusting function.

  Specifically, the connecting portion 8 includes a protruding portion 4 provided on the upper portion of the lower structure portion 2, a ring member 6 connected to the protruding portion 4, and a ring provided on the lower portion of the upper structure portion 1. It is comprised with the concave fitting connection part 5 fittingly connected to the member 6. FIG. Alternatively, the upper structure portion 1 may be provided with the protruding portion 4, while the lower structure portion 2 may be provided with the fitting connection portion 5.

  As shown in FIG. 2, the protruding portion 4 is an appropriate metal quadrangular prism-shaped body that protrudes from the upper surface of the bending / extending portion 15 provided in the lower structure portion 2.

  The protruding portion 4 is formed to have a larger diameter on the upper end side so that each of the four peripheral surfaces becomes a tapered surface 4a.

  By providing the taper surface 4a, the tip surface of the support member 7 is as plane as possible when the peripheral surface of the protrusion 4 is a simple vertical surface when supported by the support member 7 described later. It is possible to make contact with each other, so that stable and good angle adjustment is always possible, and in addition, a good retaining action of the protruding portion 4 is exhibited.

  The ring member 6 is formed of an appropriate metal member as shown in FIG. 2, and is configured such that the above-described protruding portion 4 can be arranged and surrounded in the ring hole 6c.

  Further, a screw groove 6a into which the fitting connecting portion 5 is screwed is formed on the outer peripheral surface of the ring member 6, and a through hole 6b described later is opened on the outer peripheral surface on which the screw groove 6a is formed. Has been.

  The ring member 6 is formed with four through holes 6 b formed at equal intervals. The through holes 6 b are provided so as to open to the inner surface of the ring hole 6 c and the outer peripheral surface of the ring member 6. It has been.

  As shown in FIGS. 8 and 9, each through hole 6 b is provided in an inclined state so that the inner opening is positioned higher than the outer opening. The inclination angle of each through-hole 6 b is set to an angle at which a distal end portion 7 a of a support member 7 described later comes into surface contact with the tapered surface 4 a of the projecting portion 4.

  A support member 7 is screwed into each through hole 6b.

  The support member 7 is a screw rod body formed of an appropriate metal member as shown in FIG. 2, and the protruding portion 4 is attached to the ring member 6 in a state where the support member 7 is screwed to the ring member 6. In this state, the ring member 6 can be connected to the protrusions 4 by supporting the protrusions 4 in the ring holes 6 c with the tip portions 7 a of the support members 7.

  The structure in which the ring member 6 is connected to the projecting portion 4 via the support member 7 exhibits an angle adjusting function, so that the upper structure portion 1 and the lower structure portion 2 are connected at an optimum angle. The protrusion 4 is arranged at an optimum angle with respect to the ring member 6, and in this state, the support member 7 is protruded by an appropriate amount to support the protrusion 4, thereby lowering the upper structure 1. The side structure 2 can be connected at a desired angle. At this time, the base end portion of the support member 7 protruding from the outer opening portion of the through hole 6 b is excised, and the excised surface is excised so as to be flush with the outer peripheral surface of the ring member 6.

  Therefore, when the fitting connection portion 5 described later is fitted and connected to the ring member 6 in this state, the base end portion 7b of each support member 7 is supported by the fitting connection portion 5 in a retaining state. 7 is held at a predetermined position.

  The support member 7 is not limited to a structure that is screwed into the through-hole 6b, but may be a structure that is press-fitted and locked, but in any case, a structure that can be detached is desirable.

  Further, the front end surface 6A (upper end surface) of the ring member 6 is a portion that comes into contact with the bottom surface 5A of the fitted connection portion 5 when the ring member 6 is completely screwed to the fitted connection portion 5.

  The fitting connection portion 5 is a concave body having a circular cross section formed of an appropriate metal member as illustrated in FIG. 2, and is provided at the lower portion of the upper structure portion 1.

  Further, a screw groove 5a is formed in the inner hole of the fitting connecting portion 5, and is configured to be screwed and connected to the ring member 6 described above.

  Further, the bottom surface 5A of the fitting connection portion 5 is formed so that the ring member 6 and a screwing fitting portion 9 described later are completely screwed into the fitting connection portion 5 and the front end surface 6A of the ring member 6 and This is a portion with which the front end surface 9A of the screw fitting portion 9 abuts.

  Further, the fitted connecting portion 5 has a slit portion 5b formed at a predetermined location so that the diameter can be reduced, and a fastening member 17 for fastening the slit portion 5b is provided between the opposing ends of the slit portion 5b. It has been.

  Therefore, after the fitting connecting portion 5 is screwed to the ring member 6 to be fitted and connected, the fastening member 17 is tightened to narrow the interval between the slit portions 5b, so that the fitting connecting portion 5 to the ring member 6 is tightened. Thus, a solid connection state can be obtained.

  Next, a measuring device S for assembling a prosthetic foot according to the present embodiment (an appropriate position measuring device for measuring an appropriate position of the through hole 6b of the ring member 6 in the connecting portion 8 of the artificial leg F) will be described.

  Specifically, one end has a screw fitting portion 9 to be screwed and fitted to the fitting coupling portion 5, and the other end has a hole 12b. An angle memory 11 is provided around the hole 12b. A base 12 having a knob 14A at one end and a fitting portion 14B fitted into the hole 12b at the other end, and a memory indicating section 13 for indicating the angle memory 11 around the knob 14A and a reference position The reference angle memory 11A of the angle memory 11 includes an end portion 9a ′ of the screw groove 9a formed in the screw fitting portion 9. It is provided as a standard.

  The base 12 is a cylindrical body made of an appropriate metal as shown in FIGS. 3 and 4, and a screw groove 9 a is formed on the peripheral surface of one end of the base 12. It is configured as a screw fitting portion 9 to be fitted and fitted.

  As shown in FIGS. 3 and 4, the base 12 is formed with a flange 12 a at the other end, and this flange 12 a functions as a gripping operation portion when the screw fitting portion 9 is screwed. The peripheral surface of the flange 12a is anti-slip by knurling.

  Further, a recess 12c is provided at the opening end of the hole 12b on the end face of the flange 12a, and this recess 12c is a part where a knob 14A of a rotating body 14 described later is rotatably disposed.

  Further, an angle memory 11 is provided in the collar portion 12a.

  As shown in FIG. 3, a plurality of the angle memories 11 are provided around the axial surface of the base 12 (rotation center of the rotating body 14) at the peripheral portion of the recess 12c on the end face of the flange 12a.

  A reference angle memory 11A serving as a reference when providing the angle memory 11 is formed with reference to an end portion 9a '(starting end) of a screw groove 9a formed in the screw fitting portion 9.

  Specifically, as shown in FIG. 3, the end surface of the flange portion 12a is a predetermined portion, and is located on the same plane as the surface X that passes through the axis of the base 12 and contacts the end portion 9a ′ of the screw groove 9a. An angle memory 11 serving as a reference is provided at the part, which is used as a reference angle memory 11A, and a total of three memories 11B are provided every 90 degrees from the reference angle memory 11A. Further, the reference angle memory 11A and one memory 11B An angle memory 11 is provided every 5 degrees. The angle memory 11 provided between the reference angle memory 11A and the one memory 11B is not limited to every 5 degrees, but may be every 1 degree, and the angle memory 11 is provided on the entire circumference of the end surface of the flange 12a. It may be provided.

  The rotating body 14 is formed of an appropriate metal member as shown in FIGS. 3 and 4, and a handle 14A that is rotatably disposed in the recess 12c of the base 12 and the handle 14A. And a fitting portion 14B that is rotatably fitted in the hole 12a of the base 12 and is provided at the base end portion.

  The knob 14A is provided in a state of being prevented from being detached from the base 12 by a rotating portion 14b connected via a connecting member 14c, and the base 12 is provided by a ridge 18 disposed between the rotating portion 14b and the inner surface of the base 12. Are provided in pressure contact with the recess 12c.

  Therefore, resistance is generated when the knob 14A is rotated from this configuration, and it is possible to prevent the rotating body 14 from rotating unexpectedly and losing the angle memory 11 indicated by the memory instruction unit 13.

  Further, the peripheral surface of the tip of the knob 14A is provided with anti-slip by knurling.

  The knob 14A is provided with a memory instruction unit 13 for indicating the angle memory 11 and a reference instruction unit 19 for indicating a reference position.

  As shown in FIG. 3, a plurality (three) of the memory instruction units 13 are provided every 90 degrees on the peripheral surface of the knob 14A and in the vicinity of the portion where the angle memory 11 is formed. One reference designating part 19 (black triangle mark in FIG. 3) is provided.

  Accordingly, when the rotating body 14 is rotated to an arbitrary position, any one of the memory instruction units 13 always indicates the angle memory 11.

  A method for measuring an appropriate position of the through hole 6b of the ring member 6 in the connecting portion 8 of the artificial leg F using the measuring device S for assembling an artificial leg having the above configuration will be described.

  First, as shown in FIGS. 5 and 6, the screw fitting portion 9 is screwed and fitted to the fitting connection portion 5 provided in the upper structure portion 1. At this time, the screw fitting part 9 is completely screwed and fitted until the front end surface 9A of the screw fitting part 9 comes into contact with the bottom surface 5A of the concave fitting connection part 5.

  Subsequently, as shown in FIG. 7, the rotating body 14 is rotated so that the reference indicator 19 is in the direction desired by the prosthetic leg wearer, that is, the lower structure when the lower structure 2 is connected to the upper structure 1. When the direction that the unit 2 wants to face is adjusted so that the reference instruction unit 19 points, the memory instruction unit 13 indicates the angle memory 11.

  At this time, the end 6a ′ of the screw groove 6a formed on the peripheral surface of the ring member 6 is determined depending on how many times the angle memory 11 indicated by the memory instruction unit 13 is the angle memory 11 positioned from the reference angle memory 11A. It can be determined how many positions the through hole 6b should be provided from the (starting end).

  Specifically, in the case illustrated in FIG. 7, the memory instruction unit 13 indicates the angle memory 11 at a position of 50 degrees from the reference angle memory 11A, and based on this, as shown in FIG. A through hole 6b is provided at a position inclined by 50 degrees from the end 6a 'of the screw groove 6a provided on the circumferential surface of the screw 6. Based on the through hole 6b provided at an appropriate position obtained by this apparatus S, 90 The other three through holes 6b are provided every time.

  When the upper structure portion 1 and the lower structure portion 2 are screwed and fitted using the ring member 6 in which the through hole 6b is formed in this way (the front end surface 6A of the ring member 6 is a concave fitting connection) When the screw is completely screwed until it comes into contact with the bottom surface 5A of the part 5), the lower structure part 2 is in the mounting state facing the desired direction (see FIG. 9).

  Therefore, according to the present embodiment, an optimal wearing state capable of satisfactorily walking can be obtained easily and accurately.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

F Prosthetic leg 1 Upper structure part 2 Lower structure part 3 Grounding part 4 Protruding part 5 Fit connection part 5A Bottom surface 6 Ring member 6b Through hole 6c Ring hole 7 Support member 9 Screw fitting part 9a Screw groove 9a 'end 9A Tip surface
11 Angle memory
11A Reference angle memory
12 substrate
12b hole
13 Memory indicator
14 Rotating body
14A pinch
14B insertion part
19 Reference indicator

Claims (4)

  A protruding portion is provided on one of the upper structural portion attached to the body and the lower structural portion connected to the upper structural portion and having a grounding portion on the lower end portion, and a concave fitting connecting portion is provided on the other side. The ring portion is provided with a ring member, and the protruding portion is disposed in the ring hole of the ring member, and the protruding portion in the ring hole is provided in the through hole provided in the peripheral surface portion of the ring member. A measuring device for measuring an appropriate position of the lower structure portion with respect to the upper structure portion in a prosthetic leg that is configured to be provided with a support member for supporting the ring and the ring member is configured to be screwed and fitted into the fitting connection portion. A base having a screw fitting portion screwed into the fitting coupling portion at one end, a hole at the other end, and an angle memory around the hole, and one end Has a fitting on the other end, and has a fitting portion to be fitted into the hole at the other end. A rotating body provided with a memory designating unit for designating an angle memory and a standard designating unit for designating a reference position, and the reference angle memory of the angle memory is a screw formed in the screwing fitting unit. A measuring device for assembling a prosthetic leg, characterized in that it is provided with reference to the end of the groove.   2. The measuring apparatus for assembling a prosthetic leg according to claim 1, wherein the angle memory indicates a rotation angle of the rotating body, and a memory is provided for each predetermined angle in a range of at least 90 degrees from the reference angle memory. Further, there is one reference instruction section and three memory instruction sections, which are provided at intervals of 90 degrees. measuring device.   The measuring device for assembling a prosthetic foot according to any one of claims 1 and 2, wherein a fitting length of the screw fitting portion is such that a tip surface of the screw fitting portion is a bottom surface of the fitting connecting portion. A measuring device for assembling a prosthetic foot, wherein the measuring device is set to a length that can be screwed until it comes into contact with the prosthesis.   The measuring device for assembling a prosthetic leg according to any one of claims 1 to 3, wherein the knob is provided with anti-slip by knurling.

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