Upper and lower limb stump models and human body models

Abstract

To provide an excellent model that simulates a cut end part of an upper limb or a lower limb after the upper end or the lower end is cut off.SOLUTION: A model 10 of a cut end part of an upper limb or a lower limb according to an embodiment of the present invention includes: a body part 12; and a supporting unit 14 located in the upper side (the upper half side) of the body part 12. The body part 12 is a member that corresponds to a model body which simulates an end part of a lower limb after a thigh is cut off, and is made of a soft part tissue material simulating a soft tissue. The body part 12 contains a bone part 18. A prosthetist can practice in almost the same environment as the environment for measuring the pattern and the size of a cut end of an actual thigh by using the model 10 of a cut end part of an upper limb or a lower limb.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an upper or lower limb stump model simulating the end part of an upper or lower limb after amputation due to upper or lower limb amputation, and a human body model simulating a human body including at least a part of an upper or lower limb.

Background Art

[0002] Conventionally, models and simulators for technical practice in medical institutions and educational institutions have been provided. For example, Patent Document 1 below discloses a surgical technique model capable of efficiently acquiring techniques including suturing of human skin.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, conventionally, a sufficient upper or lower limb stump model (simulated stump) suitable for practice such as taking a mold and measuring dimensions when manufacturing a prosthetic device has not been provided, and such practice has been carried out using simple members (for example, members such as cushions). Therefore, a model suitable for practice for manufacturing a prosthetic device is required, and it is considered that the technology of such a model can also be applied to a human body model including at least a part of a non-amputated upper or lower limb.

[0005] One of the objects of the present invention is to provide a good model simulating the end part of an upper or lower limb after amputation due to upper or lower limb amputation. Another object of the present invention is to provide a good model simulating a human body including at least a part of an upper or lower limb. Other objects of the present invention will become apparent by referring to the entire specification.

Means for Solving the Problems

[0006] The model according to an embodiment of the present invention is an upper and lower limb stump model that simulates the end part of an upper or lower limb after amputation due to upper or lower limb amputation, and includes a main body portion made of a soft tissue material that simulates soft tissue, a support portion provided on the opposite side of the cutting portion side of the main body portion, and a skeleton portion that simulates a skeleton and is housed inside the main body portion and fixed to the support portion.

[0007] According to this configuration, since the skeleton portion that simulates a skeleton is housed inside the main body portion made of a soft tissue material that simulates soft tissue, a model close to an actual stump is realized. Further, since there is a support portion on the opposite side of the cutting portion side of the main body portion, the upper and lower limb stump model can be fixed using the support portion. Such an upper and lower limb stump model is suitable for, for example, practice for manufacturing a prosthetic device.

[0008] Further, in the above upper and lower limb stump model, the support portion may have a protruding portion that protrudes to the opposite side of the main body portion side. In this way, for example, the upper and lower limb stump model can be fixed more suitably using the protruding portion, and an upper and lower limb stump model more suitable for practice for manufacturing a prosthetic device is realized.

[0009] Further, in the above upper and lower limb stump model, the support portion may include a base member provided at an end portion on the opposite side of the cutting portion side of the main body portion, and a rod-shaped member inserted into a hole portion of the base member, and the protruding portion is formed by at least a part of the rod-shaped member. The hole portion of the base member can be formed as a through hole or a non-through hole (bottomed hole). Further, the rod-shaped member can be formed as a hollow (tubular) member (such as a pipe) or a solid member. In this way, the protruding portion can be formed by the rod-shaped member of the support portion constituted by the base member and the rod-shaped member.

[0010] In addition, in the above-mentioned upper and lower limb stump models, the base member may be formed in a lattice shape, and the soft tissue material may be filled in the gap portion. In this way, it becomes possible to reinforce the fixation between the main body portion and the support portion (base member) by the soft tissue material filled in the gap portion of the base member.

[0011] In addition, in the above-mentioned upper and lower limb stump models, the base member has a first member that extends in a substantially horizontal direction and is provided with the hole portion, and a second member that extends substantially downward at the end of the first member. The second member may be a pair of groove portions for fitting both ends of a plate-like member curved in a substantially U shape, and the pair of groove portions extending in a substantially vertical direction are formed on the outer surface. A model having such a structure is used, for example, as an upper and lower limb stump model corresponding to thigh amputation. The plate-like member curved in a substantially U shape is used, for example, as a portion corresponding to the waist on the healthy leg side (non-amputated side). In this way, for example, an upper and lower limb stump model for thigh amputation suitable for practice for manufacturing a prosthetic device is realized.

[0012] In addition, in the above-mentioned upper and lower limb stump models, the hole portion may be formed as a through hole, and the rod-shaped member may be fixed to the skeleton portion by passing through the hole portion. In this way, for example, in the upper and lower limb stump model for thigh amputation, it becomes possible to satisfactorily fix the support portion (rod-shaped member) and the skeleton portion.

[0013] In addition, in the above-mentioned upper and lower limb stump models, the hole portion may be formed as a through hole, the skeleton portion may have a cylindrical bone-like member, and the rod-shaped member may be inserted into and fixed to the bone-like member by passing through the hole portion. In this way, since the rod-shaped member of the support portion is inserted into and strongly fixed to the cylindrical bone-like member, for example, in the upper and lower limb stump model for calf amputation, it becomes possible to satisfactorily fix the support portion (rod-shaped member) and the skeleton portion.

[0014] In addition, in the above upper and lower limb stump models, the hole portion may be provided substantially at the center of the base member, and the skeleton portion may be fixed to a portion of the base member different from the hole portion. In this way, since the skeleton portion is fixed at a position deviated from the substantially center of the base member, for example, in the upper and lower limb stump model of forearm amputation, it becomes possible to arrange the portion of the humerus in the skeleton portion at the actual position (a position biased toward the skin side).

[0015] In addition, in the above upper and lower limb stump models, the skeleton portion may have two or more bone-like members that are movably coupled. In this way, for example, an upper and lower limb stump model having a skeleton portion that is movable at a joint portion is realized.

[0016] A model according to another embodiment of the present invention is a human body model simulating a human body including at least a part of an upper limb or a lower limb, and includes a main body portion made of a soft tissue material simulating soft tissue, a support portion provided on the opposite side of the distal end side of the main body portion, and a skeleton portion simulating a skeleton, which is housed inside the main body portion and fixed to the support portion. The distal end side of the main body portion can also be referred to as the fingertip side in the upper limb and the toe tip side in the lower limb, or can also be referred to as the distal or peripheral side. Also, the opposite side of the distal end side can also be referred to as the trunk side, the proximal side, or the central side.

[0017] According to this configuration, since the skeleton portion simulating the skeleton is housed inside the main body portion made of the soft tissue material simulating the soft tissue, a model close to an actual human body is realized. In addition, since there is a support portion on the opposite side of the distal end side of the main body portion, the human body model can be fixed using the support portion. Such a human body model is suitable for various technical trainings in, for example, medical institutions and educational institutions.

Effects of the Invention

[0018] Embodiments of the present invention provide a good model simulating the distal end portion of an upper limb or a lower limb after amputation by upper limb or lower limb amputation, or a good model simulating a human body including at least a part of an upper limb or a lower limb.

Brief Description of the Drawings

[0019]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Figure 17

Modes for Carrying Out the Invention

[0020] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each drawing, the same or similar components may be assigned the same reference numerals.

[0021] FIG. 1 is an external view of an upper and lower limb stump model 10 according to a first embodiment of the present invention. The upper and lower limb stump model 10 is a model simulating the end portion of a lower limb after thigh amputation. As shown in the figure, the upper and lower limb stump model 10 includes a main body portion 12 and a support portion 14 provided on the upper side (upper body side) of the main body portion 12. The upper side of the main body portion 12 can also be referred to as the side opposite to the cut portion side (lower side).

[0022] The main body portion 12 is a member corresponding to the model main body and is made of a soft tissue material simulating soft tissue. As the soft tissue material, various flexible materials can be applied. In this embodiment, a gel-like urethane resin (for example, urethane sponge gel, etc.) is applied.

[0023] FIG. 2 is a diagram for explaining the configuration of the upper and lower limb stump model 10, and shows a state before the main body portion 12 is formed in the manufacturing process of the model 10. In this state, as shown in the figure, a mold 13 for forming the main body portion 12 is attached to the support portion 14. The mold 13 is a bag-shaped member having a substantially L-shaped opening 131 that opens on the upper surface side (upper body side) and the healthy foot side, and is formed of a synthetic resin or the like (for example, expanded polystyrene, etc.). In FIG. 2, the mold 13 is shown as semi-transparent.

[0024] As shown in FIG. 2, the support portion 14 has a base member 15 that covers the opening 131 of the mold 13 and a pipe member 16. The base member 15 is formed of, for example, a synthetic resin. The base member 15 has a first member 151 that extends substantially horizontally so as to cover the upper surface side of the opening 131 of the mold 13, and a second member 152 that extends substantially vertically so as to cover the side surface side (healthy foot side) of the opening 131. The base member 15 has a substantially L-shaped shape and is joined to the mold 13 (for example, by an adhesive) in the vicinity of the opening 131 of the mold 13.

[0025] The first member 151 has a substantially semi-elliptical cylinder shape and is arranged such that the cross-section in the height direction of the elliptical cylinder is on the healthy leg side. Further, a wall portion 1512 is provided inside the first member 151, and the wall portion 1512 forms a hole portion 1514 as a through hole penetrating in the vertical direction (axial direction of the elliptical cylinder) and four gap portions 1516 also penetrating in the vertical direction around the hole portion 1514. In this way, the first member 151 is formed in a lattice shape including the four gap portions 1516. The hole portion 1514 has a substantially cylindrical shape and is formed at a position that is substantially in the center in the front-rear direction of the body of the first member 151 and is slightly shifted toward the healthy leg side from the substantially center in the left-right direction of the body.

[0026] The second member 152 has a substantially semi-elliptical column shape extending downward from the healthy leg side end of the first member 151, and a bulge is formed at a position corresponding to the hip of the body. Further, a pair of groove portions 1522 extending linearly substantially downward from the upper end are provided near the front end and the rear end of the outer surface of the second member 152. As shown in FIG. 3, the pair of groove portions 1522 are formed to fit both ends of a plate member 19 (having a substantially rectangular shape) curved in a substantially U shape. The plate member 19 attached in this way is used as a portion corresponding to the waist on the healthy leg side. The plate member 19 is formed of, for example, a synthetic resin.

[0027] The pipe member 16 is formed of, for example, a synthetic resin. The pipe member 16 is arranged so as to penetrate the hole portion 1514 of the first member 151 of the base member 15. The pipe member 16 is joined to the first member 151 at the portion of the hole portion 1514. The joining is realized, for example, by an adhesive or mechanically. The pipe member 16 is substantially orthogonal to the bottom surface of the first member 151 having a substantially semi-elliptical cylinder shape and protrudes and extends to the opposite side of the main body portion 12 side.

[0028] In addition, a skeleton part 18 imitating an actual skeleton is fixed to the support part 14, and the skeleton part 18 is disposed inside the mold 13. FIG. 4 is a diagram for explaining the configuration of the upper and lower limb cut end model 10, and shows the support part 14 and the skeleton part 18 fixed to the support part 14. As shown in the figure, the skeleton part 18 includes a plurality of bone-like members 182 imitating bones, a movable joint member 184 that movably joints two bone-like members 182, and a muscle member 186 that is joined to the bone-like member 182 and imitates muscles. The bone-like members 182 include, for example, a member 182A corresponding to the femur and a member 182B corresponding to the pelvis. At least a part of the plurality of bone-like members 182 moves in the same manner as a joint part at the part of the movable joint member 184. These bone-like members 182, movable joint member 184, and muscle member 186 are formed of, for example, synthetic resin or the like, and are formed using, for example, a 3D printer.

[0029] Also, as shown in FIG. 4, the pipe member 16 of the support part 14 is joined at its lower end to a joint part 1821 provided on the bone-like member 182B corresponding to the pelvis. The joining is realized, for example, by an adhesive or mechanically.

[0030] Here, the main body part 12 is formed by removing the mold 13 after the gel-like urethane resin stock solution (for example, composed of a main agent and a curing agent) injected into the mold 13 is cured. The urethane resin stock solution is injected into the inside of the mold 13 from the gap part 1516 of the first member 151 of the base member 15. The main body part 12 will accommodate the skeleton part 18 therein.

[0031] In addition, the gel-like urethane resin applied as the soft tissue material constituting the main body portion 12 has adhesiveness. As a result, the main body portion 12 adheres to the support portion 14 (the lower side of the base member 15 and the pipe member 16) and the skeleton portion 18. In particular, the gap portion 1516 of the first member 151 of the base member 15 is filled with the soft tissue material having adhesiveness (see FIG. 1), thereby strengthening the fixation between the main body portion 12 and the support portion 14. Note that the main body portion 12, the support portion 14, and the skeleton portion 18 may be joined by an adhesive or the like. Further, on the surface of the main body portion 12, a surface treatment (for example, application of a coating agent) for reducing adhesiveness is performed.

[0032] Such upper and lower limb stump models 10 are fixed using the pipe member 16 during the practice of taking a mold and measuring dimensions by a prosthetist. And since the upper and lower limb stump model 10 houses a skeleton portion 18 that mimics a skeleton inside the main body portion 12 made of a soft tissue material that mimics soft tissue, a prosthetist can use such an upper and lower limb stump model 10 to practice taking a mold and measuring dimensions in an environment similar to that of a real thigh amputation stump.

[0033] FIG. 5 is an external view of an upper and lower limb stump model 20 according to the second embodiment of the present invention. The upper and lower limb stump model 20 is a model that mimics the end portion of a lower limb after a below-knee amputation. As shown in the figure, the upper and lower limb stump model 20 includes a main body portion 22 and a support portion 24 provided on the upper side (thigh portion side) of the main body portion 22. The upper side of the main body portion 22 can also be referred to as the side opposite to the cut portion side (lower side).

[0034] The main body portion 22 is a member corresponding to the model body and is made of a soft tissue material that mimics soft tissue. As the soft tissue material, various materials having flexibility can be applied, and in the present embodiment, a gel-like urethane resin (for example, urethane sponge gel or the like) is applied.

[0035] Figs. 6 and 7 are diagrams for explaining the configuration of the upper and lower limb stump model 20, showing the state before forming the main body 22 in the manufacturing process of the model 20. In this state, as shown in the figures, a mold 23 for forming the main body 22 is attached to the support part 24. The mold 23 is a bag-shaped member having a substantially circular opening 231 that opens on its upper surface side (thigh side), and is formed of a synthetic resin or the like (for example, expanded polystyrene or the like). In Figs. 6 and 7, the mold 23 is shown as translucent.

[0036] As shown in Figs. 6 and 7, the support part 24 has a base member 25 that covers the opening 231 of the mold 23 and a pipe member 26. The base member 25 is formed of, for example, a synthetic resin. The base member 25 has a substantially cylindrical shape as shown in Fig. 7 and is joined to the mold 23 (for example, by an adhesive) in the vicinity of the opening 231 of the mold 23. Also, a wall part 252 is provided inside the base member 25, and the wall part 252 forms a hole part 254 as a through hole penetrating in the vertical direction (axial direction of the cylinder) and four gap parts 256 also penetrating in the vertical direction around the hole part 254. The hole part 254 has a substantially cylindrical shape and is located substantially at the center in the planar direction of the base member 25. Thus, the base member 25 is formed in a lattice shape including the four gap parts 256.

[0037] The pipe member 26 is formed of, for example, a synthetic resin. The pipe member 26 penetrates through the hole part 254 of the base member 25. The pipe member 26 is joined to the base member 25 at the part of the hole part 254. The joining is realized, for example, by an adhesive or mechanically. The pipe member 26 is substantially orthogonal to the bottom surface of the base member 25 having a substantially cylindrical shape and protrudes and extends to the side opposite to the main body 22 side.

[0038] Further, as shown in FIG. 6, a skeleton portion 28 imitating an actual skeleton is fixed to the support portion 24, and the skeleton portion 28 is disposed inside the mold 23. The skeleton portion 28 includes a plurality of bone-like members 282 imitating bones, a movable joint member 284 that movably joints the two bone-like members 282, and a muscle member 286 that is joined to the bone-like member 282 and imitates muscles. The bone-like members 282 include, for example, a member 282A corresponding to the femur, a member 282B corresponding to the patella, and a member 282C corresponding to the tibia. At least a part of the plurality of bone-like members 282 moves in the same manner as a joint portion at the portion of the movable joint member 284. These bone-like members 282, movable joint member 284, and muscle member 286 are formed of, for example, a synthetic resin or the like, and are formed using, for example, a 3D printer.

[0039] Further, the pipe member 26 is joined to the bone-like member 282A corresponding to the femur. FIG. 8 shows a longitudinal cross section of FIG. 6. Specifically, as shown in FIG. 8, the bone-like member 282A is formed with a hole portion 2821 as a through hole penetrating in the longitudinal direction, and the pipe member 26 is inserted into and joined to the hole portion 2821. The joining is realized, for example, by an adhesive or mechanically. The pipe member 26 is fixed such that its lower end portion is shifted to a position slightly above the lower end portion of the hole portion 2821.

[0040] Here, the main body portion 22 is formed by removing the mold 23 after the gel-like urethane resin stock solution (for example, composed of a main agent and a curing agent) injected into the mold 23 is cured. The urethane resin stock solution is injected into the mold 23 from the gap portion 256 of the base member 25. The main body portion 22 will accommodate the skeleton portion 28 therein.

[0041] In addition, the gel-like urethane resin applied as the soft tissue material constituting the main body portion 22 has adhesiveness. As a result, the main body portion 22 adheres to the support portion 24 (base member 25) and the skeleton portion 28. In particular, the gap portion 256 of the base member 25 is filled with the soft tissue material having adhesiveness, thereby reinforcing the fixation between the main body portion 22 and the support portion 24. Note that the main body portion 22, the support portion 24, and the skeleton portion 28 may be joined by an adhesive or the like. Further, on the surface of the main body portion 22, a surface treatment (for example, application of a coating agent) for reducing adhesiveness is performed.

[0042] Such upper and lower limb stump models 20 are fixed using the pipe member 26 during the practice of taking a mold and measuring dimensions by prosthetists. And since the skeleton portion 28 imitating the skeleton is accommodated inside the main body portion 22 made of a soft tissue material imitating the soft tissue in the upper and lower limb stump model 20, the prosthetist can use such an upper and lower limb stump model 20 to perform practice in an environment close to taking a mold and measuring dimensions for the stump of an actual below-knee amputation.

[0043] FIG. 9 is an external view of an upper and lower limb stump model 30 according to the third embodiment of the present invention. The upper and lower limb stump model 30 is a model imitating the end portion of the upper limb after forearm amputation. As shown in the figure, the upper and lower limb stump model 30 includes a main body portion 32 and a support portion 34 provided on the upper side (upper arm side) of the main body portion 32. The upper side of the main body portion 32 can also be referred to as the side opposite to the cut portion side (lower side) of the stump model.

[0044] The main body portion 32 is a member corresponding to the model main body and is made of a soft tissue material imitating the soft tissue. As the soft tissue material, various materials having flexibility can be applied. In this embodiment, a gel-like urethane resin (for example, urethane sponge gel or the like) is applied.

[0045] FIG. 10 and FIG. 11 are diagrams for explaining the configuration of the upper and lower limb stump model 30, and in the manufacturing process of the model 30, the state before forming the main body portion 32 is shown. In this state, as shown in the drawings, a mold 33 for forming the main body portion 32 is attached to the support portion 34. The mold 33 is a bag-shaped member having a substantially circular opening 331 that opens on the upper surface side (upper arm side), and is formed of a synthetic resin or the like (for example, expanded polystyrene or the like). In FIGS. 10 and 11, the mold 33 is shown as being translucent.

[0046] As shown in FIGS. 10 and 11, the support portion 34 has a base member 35 that covers the opening 331 of the mold 33 and a pipe member 36. The base member 35 is formed of, for example, a synthetic resin. The base member 35 has a substantially cylindrical shape and is joined to the mold 33 (for example, by an adhesive) in the vicinity of the opening 331 of the mold 33. Further, as shown in FIG. 11, a wall portion 352 is provided inside the base member 35, and the wall portion 352 forms a first hole portion 354 as a through hole that penetrates in the vertical direction (axial direction of the cylinder) and four gap portions 356 that also penetrate in the vertical direction around the first hole portion 354. The first hole portion 354 has a substantially cylindrical shape and is located substantially at the center in the planar direction of the base member 35. Thus, the base member 35 is formed in a lattice shape including the four gap portions 356.

[0047] The pipe member 36 is formed of, for example, a synthetic resin. The pipe member 36 is inserted into the first hole portion 354 of the base member 35 and is joined to the base member 35 at the portion of the first hole portion 354. The joining is realized, for example, by an adhesive or mechanically. The lower end portion of the pipe member 36 is fixed so as to be at the position of the lower end portion of the first hole portion 354. The pipe member 36 is substantially orthogonal to the bottom surface of the base member 35 having a substantially cylindrical shape and protrudes and extends to the opposite side of the main body portion 32 side.

[0048] Further, a skeleton portion 38 imitating an actual skeleton is fixed to the support portion 34, and the skeleton portion 38 is disposed inside the mold 33. The skeleton portion 38 includes a plurality of bone-like members 382 imitating bones and a movable joint member 384 that movably joins two bone-like members 382. The bone-like members 382 include, for example, a member 382A corresponding to the humerus, a member 382B corresponding to the ulna, and a member 382C corresponding to the radius. At least a part of the plurality of bone-like members 382 moves in the same manner as a joint portion at the portion of the movable joint member 384. These bone-like members 382 and the movable joint member 384 are formed of, for example, a synthetic resin or the like, and are formed using, for example, a 3D printer.

[0049] Further, the base member 35 is joined to the bone-like member 382A corresponding to the humerus. FIG. 12 shows a longitudinal cross section of FIG. 10. Specifically, as shown in FIG. 12, a second hole portion 358 that opens to the lower surface side is formed adjacent to the first hole portion 354 on the lower surface side (the main body portion 32 (mold 33) side) of the base member 35, and the bone-like member 382A corresponding to the humerus is inserted into and joined to the second hole portion 358. This joining is realized, for example, by an adhesive or mechanically. As a result, since the bone-like member 382A corresponding to the humerus approaches one skin side, the flexibility of the main body portion 32 at the portion near the other opposite skin side (for example, portion P in FIG. 12) increases (becomes softer).

[0050] In addition, a bone-shaped member 382A corresponding to the humerus has a through-hole 3821 penetrating in the longitudinal direction. The through-hole 3821 is linearly aligned with a through-hole 3581 formed in the second hole portion 358 of the base member 35. Further, the through-hole 3821 is linearly aligned with any one of three hole portions 3841 formed in a movable joint member 384 located at the forearm-side end of the bone-shaped member 382A corresponding to the humerus, according to the rotation angle of the movable joint member 384. Then, by passing a rod as a cannula mechanism through the through-hole 3581 and the through-hole 3821 from the upper surface side of the base member 35 and inserting it into any one of the three hole portions 3841 of the movable joint member 384, the rotation angle of the movable joint member 384 can be fixed. Such a cannula mechanism realizes the adjustment of the fixed angle of the forearm in the upper and lower limb stump model 30.

[0051] Here, the main body portion 32 is formed by removing the mold 33 after the gel-like urethane resin stock solution (for example, composed of a main agent and a curing agent) injected into the mold 33 has cured. The urethane resin stock solution is injected into the interior of the mold 33 from the gap portion 356 of the base member 35. The main body portion 32 will accommodate the skeleton portion 38 therein.

[0052] In addition, the gel-like urethane resin applied as the soft tissue material constituting the main body portion 32 has adhesiveness, and as a result, the main body portion 32 adheres to the support portion 34 (base member 35) and the skeleton portion 38. In particular, the gap portion 356 of the base member 35 is filled with the soft tissue material having adhesiveness, thereby strengthening the fixation between the main body portion 32 and the support portion 34. Note that the main body portion 32 and the support portion 34 and the skeleton portion 38 may be joined by an adhesive or the like. Also, on the surface of the main body portion 32, a surface treatment (for example, application of a coating agent) for reducing adhesiveness is performed.

[0053] Such upper and lower limb stump models 30 are fixed using the pipe member 36 during the practice of taking impressions and measurements by prosthetists. And since the upper and lower limb stump model 30 has a skeleton part 38 that imitates the skeleton accommodated inside the main body part 32 made of soft tissue material that imitates soft tissue, prosthetists can use such upper and lower limb stump models 30 to practice taking impressions and measurements in an environment close to that of a real forearm amputation stump.

[0054] Figure 13 is an external view of an upper and lower limb stump model 40 according to a fourth embodiment of the present invention. The upper and lower limb stump model 40 is a model that imitates the end part of the upper limb after upper arm amputation, and includes a part of the chest (right half body) in addition to the upper limb. As shown in the figure, the upper and lower limb stump model 40 includes a main body part 42 and a support part 44 provided on the trunk side of the main body part 42. The trunk side of the main body part 42 can also be referred to as the side opposite to the cut part side.

[0055] The main body part 42 is a member corresponding to the model main body and is made of soft tissue material that imitates soft tissue. As the soft tissue material, various flexible materials can be applied, and in this embodiment, a gel-like urethane resin (for example, urethane sponge gel, etc.) is applied.

[0056] Figures 14 and 15 are diagrams for explaining the configuration of the upper and lower limb stump model 40, and show the state before the main body part 42 is formed in the manufacturing process of the model 40. In this state, as shown in the figure, a mold 43 for forming the main body part 42 is attached to the support part 44. The mold 43 is a bag-shaped member having an opening 431 that opens on the trunk side thereof, and is formed of a synthetic resin or the like (for example, expanded polystyrene, etc.). In Figures 14 and 15, the mold 43 is shown as semi-transparent.

[0057] As shown in FIG. 15, the support portion 44 includes a base member 45 that covers the spinal side and the lumbar side of the opening 431 of the mold 43, and an angle member 46 attached to the base member 45. The opening 431 of the mold 43 has a gap portion 4311 on its neck side. The base member 45 is joined to the mold 43 (e.g., by an adhesive) in the vicinity of the spinal side and the lumbar side of the opening 431 of the mold 43.

[0058] The base member 45 is formed of, for example, a synthetic resin. The base member 45 has a membranous shape corresponding to the parietal pleura and is curved toward the upper limb side. The base member 45 includes a first member 451 that extends in a rail shape in the vertical direction on its inner (lung side) surface, and a box-shaped second member 453 that is attached to the first member 451 so as to be movable in the vertical direction along the first member 451.

[0059] The first member 451 has an inverted trapezoidal cross section, and the second member 453 is formed with a groove into which the first member 451 having the inverted trapezoidal cross section is fitted. As a result, the second member 453 is movable in the vertical direction along the first member 451. A plurality of through holes are provided in the first member 451 and the second member 453 at predetermined intervals in the vertical direction, and the relative position of the second member 453 with respect to the first member 451 is fixed by a cannula mechanism using these through holes.

[0060] The angle member 46 has a bar shape with an L-shaped cross section and is formed of, for example, an aluminum alloy. The end of the angle member 46 is joined to the second member 453 of the base member 45, is substantially orthogonal to the first member 451 and the sagittal plane of the body, and protrudes and extends to the opposite side of the main body portion 42 side. The joining is realized, for example, by an adhesive or mechanically. The angle member 46 and the second member 453 are detachably attached to the first member 451.

[0061] In addition, a skeleton part 48 imitating the actual skeleton is fixed to the support part 44, and the skeleton part 48 is disposed inside the mold 43. Specifically, the skeleton part 48 has a plurality of bone-like members corresponding to the humerus, scapula, clavicle, rib, and sternum respectively, and the bone-like member corresponding to the rib is joined to the first member 451 of the base member 45. The joining is realized, for example, by an adhesive or mechanically. The skeleton part 48 is formed of, for example, synthetic resin or the like, and is formed using, for example, a 3D printer.

[0062] Here, the main body part 42 is formed by removing the mold 43 after the gel-like urethane resin stock solution (for example, composed of a main agent and a curing agent) injected into the mold 43 is cured. The urethane resin stock solution is injected into the inside of the mold 43 from the gap part 4311 of the opening part 431 of the mold 43. The main body part 42 will accommodate the skeleton part 48 therein.

[0063] In addition, the gel-like urethane resin applied as the soft tissue material constituting the main body part 42 has adhesiveness, and as a result, the main body part 42 adheres to the support part 44 (base member 45) and the skeleton part 48. In particular, the gap of the bone-like member of the skeleton part 48 (for example, the gap of the bone-like member corresponding to the rib) is filled with the soft tissue material having adhesiveness, so that the fixation between the main body part 42 and the skeleton part 48 is strengthened. Note that the main body part 42, the support part 44, and the skeleton part 48 may be joined by an adhesive or the like. Also, on the surface of the main body part 42, a surface treatment (for example, application of a coating agent) for reducing adhesiveness is performed.

[0064] Such a model 40 of the upper and lower limb stump is fixed using the angle member 46 during the practice of mold taking and measurement by a prosthetist. And since the skeleton part 48 imitating the skeleton is accommodated inside the main body part 42 made of the soft tissue material imitating the soft tissue in the model 40 of the upper and lower limb stump, the prosthetist can use such a model 40 of the upper and lower limb stump to practice in an environment close to mold taking and measurement for the stump of the actual upper arm amputation.

[0065] FIG. 16 is a diagram for explaining the configuration of a human body model 50 according to a fifth embodiment of the present invention. The human body model 50 is a model that mimics the hand and forearm portions of the upper limb. As shown in the figure, the human body model 50 includes a main body portion 52 and a support portion 54 provided at the forearm-side end of the main body portion 52. The forearm side of the main body portion 52 can also be referred to as the side opposite to the tip side (fingertip side) of the human body model. The main body portion 52 is a member corresponding to the model body and is made of a soft tissue material that mimics soft tissue. As the soft tissue material, various flexible materials can be applied. In this embodiment, a gel-like urethane resin (for example, urethane sponge gel, etc.) is applied. In FIG. 16, the main body portion 52 is shown as translucent.

[0066] The support portion 54 has a base member 55 and a pipe member 56. The base member 55 is formed of, for example, a synthetic resin. The base member 55 has a substantially cylindrical shape and covers the forearm-side end of the main body portion 52.

[0067] The pipe member 56 is formed of, for example, a synthetic resin. The pipe member 56 is inserted into a hole provided at substantially the center of the base member 55 and is joined to the base member 55 at the portion of the hole. The joining is realized, for example, by an adhesive or mechanically. The pipe member 56 is substantially orthogonal to the bottom surface of the base member 55 having a substantially cylindrical shape and protrudes and extends to the side opposite to the main body portion 52 side.

[0068] Further, a skeleton portion 58 that mimics an actual skeleton is fixed to the support portion 54. Specifically, the upper arm-side ends of the bone-like members corresponding to the ulna and radius of the skeleton portion 58 are joined to the base member 55. The joining is realized, for example, by an adhesive or mechanically. The skeleton portion 58 is formed of, for example, a synthetic resin or the like and is formed using, for example, a 3D printer.

[0069] The main body part 52 is formed by removing the mold after the gel-like urethane resin stock solution (for example, composed of a main agent and a curing agent) injected into a mold corresponding to the shape of the main body part 52 is cured, in the same manner as the main body parts 12 to 42 in the first to fourth embodiments described above. The main body part 52 will accommodate the skeleton part 58 inside thereof.

[0070] In addition, the gel-like urethane resin applied as the soft tissue material constituting the main body part 52 has adhesiveness, and as a result, the main body part 52 adheres to the support part 54 (base member 55) and the skeleton part 58. In particular, the gap part of the base member 55 is filled with the soft tissue material having adhesiveness, thereby strengthening the fixation between the main body part 52 and the support part 54. Note that the main body part 52 and the support part 54 and the skeleton part 58 may be joined by an adhesive or the like. Also, on the surface of the main body part 52, a surface treatment (for example, application of a coating agent, etc.) for reducing adhesiveness is performed.

[0071] Such a mannequin 50 is fixed using the pipe member 56 during use. And since the mannequin 50 has the skeleton part 58 imitating the skeleton accommodated inside the main body part 52 made of the soft tissue material imitating the soft tissue, the user can perform practice in a realistic environment using such a mannequin 50.

[0072] The mannequin 50 described above is configured as a model imitating the hand and forearm parts of the upper limb, but in other embodiments of the present invention, the mannequin 50 can be configured as a model imitating other parts of the upper limb. For example, the mannequin 50 can be a model imitating the hand, forearm, and upper arm, or a model imitating the forearm and upper arm (a model of the elbow joint), or a model imitating only the hand, etc.

[0073] FIG. 17 is a diagram for explaining the configuration of a human body model 60 according to a sixth embodiment of the present invention. The human body model 60 is a model that mimics the foot and lower leg portions of the lower limbs. As shown in the figure, the human body model 60 includes a main body portion 62 and a support portion 64 provided at the lower leg side end of the main body portion 62. The lower leg side of the main body portion 62 can also be referred to as the side opposite to the tip side (toe side) of the human body model. The main body portion 62 is a member corresponding to the model main body and is made of a soft tissue material that mimics soft tissues. As the soft tissue material, various flexible materials can be applied, and in this embodiment, a gel-like urethane resin (for example, urethane sponge gel, etc.) is applied. In FIG. 17, the main body portion 62 is shown as semi-transparent.

[0074] The support portion 64 has a base member 65 and a pipe member 66. The base member 65 is formed of, for example, a synthetic resin. The base member 65 has a substantially cylindrical shape and covers the lower leg side end of the main body portion 62.

[0075] The pipe member 66 is formed of, for example, a synthetic resin. The pipe member 66 is inserted into a hole provided at substantially the center of the base member 65 and is joined to the base member 65 at the portion of the hole. The joining is realized, for example, by an adhesive or mechanically. The pipe member 66 is substantially orthogonal to the bottom surface of the base member 65 having a substantially cylindrical shape and protrudes and extends to the side opposite to the main body portion 62 side.

[0076] In addition, a skeleton portion 68 that mimics a real skeleton is fixed to the support portion 64. Specifically, the thigh side ends of the bone-like members corresponding to the tibia and fibula of the skeleton portion 68 are joined to the base member 65. The joining is realized, for example, by an adhesive or mechanically. The skeleton portion 58 is formed of, for example, a synthetic resin or the like and is formed using, for example, a 3D printer.

[0077] The main body portion 62 is formed by removing the mold after the gel-like urethane resin stock solution (for example, composed of a main agent and a curing agent) injected into a mold corresponding to the shape of the main body portion 62 has cured, in the same manner as the main body portions 12 to 52 in the above-described first to fifth embodiments. The main body portion 62 will accommodate the skeleton portion 68 therein.

[0078] Further, the gel-like urethane resin applied as the soft tissue material constituting the main body portion 62 has adhesiveness, and as a result, the main body portion 62 adheres to the support portion 64 (base member 65) and the skeleton portion 68. In particular, the fixing between the main body portion 62 and the support portion 64 is reinforced by filling the gap portion of the base member 65 with the soft tissue material having adhesiveness. Note that the main body portion 62 and the support portion 64 and the skeleton portion 68 may be joined by an adhesive or the like. Also, on the surface of the main body portion 62, a surface treatment (for example, application of a coating agent, etc.) for reducing adhesiveness is performed.

[0079] Such a human body model 60 is fixed using the pipe member 66 during use. And since the skeleton portion 68 simulating a skeleton is accommodated inside the main body portion 62 made of a soft tissue material simulating soft tissue in the human body model 60, the user can practice in an environment close to reality using such a human body model 60.

[0080] The above-described human body model 60 is configured as a model simulating the foot and the lower leg among the lower limbs, but in other embodiments of the present invention, the human body model 60 can be configured as a model simulating other parts of the lower limbs. For example, the human body model 60 can be a model simulating the foot, the lower leg, and the thigh, or a model simulating the lower leg and the thigh (a model of the knee joint), or a model simulating only the foot, etc.

[0081] In the above-described embodiments, a gel-like urethane resin is applied as the soft tissue material, but in the embodiments of the present invention, the materials applicable as the soft tissue material are not limited to this. Various materials can be applied.

Explanation of Reference Numerals

[0082] 10, 20, 30, 40 upper and lower limb stump models 50, 60 human body models 12, 22, 32, 42, 52, 62 body parts 13, 23, 33, 43 types 131, 231, 331, 431 openings 14, 24, 34, 44, 54, 64 support parts 15, 25, 35, 45, 55, 65 base members 16, 26, 36, 56, 66 pipe members (rod-shaped members) 46 angle members (rod-shaped members) 18, 28, 38, 48, 58, 68 skeletal parts 19 plate members (plate-shaped members)

Claims

1. An upper or lower limb stump model that imitates the remaining part of the upper or lower limb on the human body after amputation due to upper or lower limb amputation, comprising a main body portion made of a soft tissue material imitating soft tissue, a support portion provided on the opposite side of the cutting portion side of the main body portion, and a skeleton portion imitating a skeleton, which is accommodated inside the main body portion and fixed to the support portion. The support portion has a base member provided at an end on the opposite side of the cutting portion side of the main body portion, and a rod-shaped member inserted into a hole portion of the base member, and at least a part of the rod-shaped member forms a protruding portion protruding to the opposite side of the main body portion side. The base member is formed in a lattice shape, and the soft tissue material is filled in the gap portion. Upper or lower limb stump model.

2. An upper or lower limb stump model that imitates the remaining part of the upper or lower limb on the human body after amputation due to upper or lower limb amputation, comprising a main body portion made of a soft tissue material imitating soft tissue, a support portion provided on the opposite side of the cutting portion side of the main body portion, and a skeleton portion imitating a skeleton, which is accommodated inside the main body portion and fixed to the support portion. The support portion has a base member provided at an end on the opposite side of the cutting portion side of the main body portion, and a rod-shaped member inserted into a hole portion of the base member, and at least a part of the rod-shaped member forms a protruding portion protruding to the opposite side of the main body portion side. The base member has a first member extending in a substantially horizontal direction and having the hole portion formed therein, and a second member extending substantially downward at an end of the first member. The second member is a pair of groove portions for fitting both ends of a plate-shaped member curved in a substantially U shape, and the pair of groove portions extending substantially in the vertical direction are formed on the outer surface. Upper or lower limb stump model.

3. The hole portion is formed as a through hole, and the rod-shaped member penetrates the hole portion and is fixed to the skeleton portion. The upper or lower limb stump model according to Claim 1 or 2.

4. The hole portion is formed as a through hole, the skeleton portion has a cylindrical bone-shaped member, and the rod-shaped member penetrates the hole portion and is inserted and fixed into the bone-shaped member. The upper or lower limb stump model according to Claim 1.

5. The hole portion is provided substantially at the center of the base member, and the skeleton portion is fixed to a portion of the base member different from the hole portion. The upper or lower limb stump model according to Claim 1.

6. The skeletal part has two or more bone-like members movably coupled thereto. The upper and lower limb amputation stump model according to claim 1 or 2.

7. A human body model imitating at least a part of an upper limb or a lower limb, a main body part made of a soft tissue material imitating soft tissue, a support part provided on the opposite side of the distal end side of the main body part, a skeletal part imitating a skeleton, which is housed inside the main body part and fixed to the support part, The support part has a base member provided at an end on the opposite side of the distal end side of the main body part, and a rod-shaped member inserted into a hole of the base member, and at least a part of the rod-shaped member forms a protruding part protruding to the opposite side of the main body part side. The base member is formed in a lattice shape, and the soft tissue material is filled in the gap portion. Human body model.

Images