Prosthetic leaflet attachment system

Abstract

An attachment system for use with a prosthetic device, the attachment system including a first component (26) including a first surface and further including one of a channel and a protrusion (32) arranged on an opposite side of the first component from the first surface. A second component (28) includes a second surface, and the second component (28) includes the other of the channel (46) and the protrusion arranged on an opposite side of the second component from the second surface, the other of the channel or the protrusion slidably engaging the other to selectively couple the first and second components together. One of the first and second surfaces is operable to be attached to the prosthetic device (12), and the other of the first and second surfaces is operable to be attached to a sole structure (30) having a ground contact surface.

Description

[0001] This application is a divisional application of the invention patent application filed on March 31, 2017, with application number 201780021438.X and invention title "Prosthetic Leaf-shaped Attachment System".

[0002] Cross-reference to related applications

[0003] This application claims priority to U.S. Provisional Application Serial No. 62 / 316,497, filed March 31, 2016, and to U.S. Application No. 15 / 474,536, filed March 30, 2017, the disclosures of which are incorporated herein by reference in their entirety. Technical Field

[0004] This disclosure relates to attachment systems and more specifically to attachment systems for securing components having ground contact surfaces to prosthetic devices. Background Technology

[0005] This section provides background information relating to this disclosure and is not necessarily prior art.

[0006] Amputees use prosthetic devices to replace all or part of a limb. For example, a prosthetic leg can be used to replace a portion of a leg surgically removed at or above the knee. Such prosthetic devices allow a person to walk in a conventional manner by supporting their weight and, in some cases, by providing a prosthetic joint at the knee that bends and otherwise mimics the function of the human knee. Depending on the individual's condition, a prosthetic leg can be integrated into one or both legs.

[0007] Prosthetic legs can be used in conjunction with prosthetic feet, which are designed to replace the foot of an amputee. Like prosthetic legs, prosthetic feet are designed to allow amputees to walk in a conventional manner by supporting the person's weight during use. Prosthetic feet are sometimes also designed to be flexed and bent in order to function in a manner similar to the human ankle and foot.

[0008] A traditional prosthetic foot is the so-called prosthetic blade, which comprises a generally flat member extending from the distal end of the prosthetic leg. The prosthetic blade is typically formed of an elastic material to allow it to flex and flex during use and automatically return to a relaxed state once the applied force is released. This flexure and flexure is enhanced by the generally curved shape of the prosthetic blade during use when it contacts the ground. These aforementioned characteristics allow the blade to absorb energy associated with ground contact forces, and therefore provide a degree of comfort to the amputee during use. Furthermore, this flexure and flexure provides energy return during walking and running activities, enhancing the amputee's performance during these activities.

[0009] While prosthetic leaf-shaped components provide amputees with the ability to walk and run, these components typically do not include a ground contact surface suitable for all possible activities. Therefore, prosthetic leaf-shaped components may be fitted with an outsole, which is attached to the leaf-shaped component using adhesive to restrict relative movement between the leaf-shaped component's material and the outsole's material. Although this outsole provides protection for the leaf-shaped component during use and, in some applications, enhances traction between the leaf-shaped component and the ground, it is difficult to attach and, more importantly, difficult to remove. Therefore, outsoles rarely used with prosthetic leaf-shaped components are readily interchangeable for use in specific activities or with specific surfaces. Attached Figure Description

[0010] The accompanying drawings described herein are for illustrative purposes only, showing selected configurations and not all possible embodiments, and are not intended to limit the scope of this disclosure.

[0011] Figure 1 It is a three-dimensional diagram of the prosthetic device;

[0012] Figure 2 yes Figure 1 An exploded perspective view of a prosthetic device, showing the first component of the attachment system separate from the second component of the attachment system;

[0013] Figure 3A yes Figure 1 A side view of the prosthetic device;

[0014] Figure 3B yes Figure 1 prosthetic device along Figure 3A A cross-sectional view taken from line 3B-3B;

[0015] Figure 4A It is used with Figure 1 A three-dimensional diagram of the sole structure used in conjunction with prosthetic devices;

[0016] Figure 4B It is used with Figure 1 A three-dimensional diagram of the sole structure used in conjunction with prosthetic devices;

[0017] Figure 4C It is used with Figure 1 A three-dimensional diagram of the sole structure used in conjunction with prosthetic devices;

[0018] Figure 5A It is used with Figure 1 A top view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0019] Figure 5B yes Figure 5A The latching mechanism is shown in a top view in the latched state;

[0020] Figure 5C yes Figure 5A The latching mechanism is shown in a side view in the latched state;

[0021] Figure 6A It is used with Figure 1 A partial exploded perspective view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0022] Figure 6B yes Figure 6A The latching mechanism is shown in a top view in the latched state;

[0023] Figure 6C yes Figure 6A The latching mechanism along Figure 6B A partial cross-sectional view taken by line 6C-6C, showing the latching mechanism in the latched state;

[0024] Figure 7A It is used with Figure 1 A partial exploded perspective view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0025] Figure 7B yes Figure 7A The latching mechanism is shown in a top view in the latched state;

[0026] Figure 7C yes Figure 7A The latching mechanism along Figure 7B A partial cross-sectional view taken by line 7C-7C, showing the latching mechanism in the latched state;

[0027] Figure 8A It is used with Figure 1A partial cross-sectional view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0028] Figure 8B yes Figure 8A A partial cross-sectional view of a latching mechanism, wherein the latching mechanism moves from a non-latched state toward a latched state;

[0029] Figure 8C yes Figure 8A The latching mechanism is shown in a partial cross-sectional view in the latched state;

[0030] Figure 9A It is used with Figure 1 A partial cross-sectional view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0031] Figure 9B yes Figure 9A A partial cross-sectional view of a latching mechanism, wherein the latching mechanism moves from a non-latched state toward a latched state;

[0032] Figure 9C yes Figure 9A The latching mechanism is shown in a partial cross-sectional view in the latched state;

[0033] Figure 10A It is used with Figure 1 A top view of the latching mechanism used in conjunction with the prosthetic device;

[0034] Figure 10B yes Figure 10A A partial cross-sectional view of a latching mechanism, wherein the latching mechanism moves from a non-latched state toward a latched state;

[0035] Figure 10C yes Figure 10A A partial cross-sectional view of the latching mechanism in the latched state;

[0036] Figure 11A It is used with Figure 1 A top view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0037] Figure 11B yes Figure 11A The latching mechanism is shown in a top view in the latched state;

[0038] Figure 11C yes Figure 11A A partial cross-sectional view of the latching mechanism, which is shown in the latched state;

[0039] Figure 12A It is used with Figure 1 A top view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0040] Figure 12B yes Figure 12A The latching mechanism is shown in a top view in the latched state;

[0041] Figure 13A It is used with Figure 1 A top view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0042] Figure 13B yes Figure 13A A top view of the latching mechanism, wherein the latching mechanism is shown in the latched state;

[0043] Figure 14A It is used with Figure 1 A partial cross-sectional view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0044] Figure 14B yes Figure 14A A partial cross-sectional view of a latching mechanism, wherein the latching mechanism moves from a non-latched state toward a latched state;

[0045] Figure 14C yes Figure 14A A partial cross-sectional view of a latching mechanism, wherein the latching mechanism is shown in a latched state;

[0046] Figure 15A It is used with Figure 1 A partial cross-sectional view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0047] Figure 15B yes Figure 15A A partial cross-sectional view of a latching mechanism, wherein the latching mechanism moves from a non-latched state toward a latched state;

[0048] Figure 15C yes Figure 15A The latching mechanism is shown in a partial cross-sectional view in the latched state;

[0049] Figure 16A It is used with Figure 1 A partial cross-sectional view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0050] Figure 16B yes Figure 16A The latching mechanism is shown in a partial cross-sectional view in the latched state;

[0051] Figure 17A It is used with Figure 1 A top view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0052] Figure 17B yes Figure 17A A top view of the latching mechanism, wherein the latching mechanism is shown in the latched state;

[0053] Figure 18A It is used with Figure 1 A top view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state;

[0054] Figure 18B yes Figure 18A The latching mechanism is shown in a top view in the latched state;

[0055] Figure 19A It is used with Figure 1 A partial cross-sectional view of a latching mechanism used in conjunction with a prosthetic device, wherein the latching mechanism is shown in an unlocked state; and

[0056] Figure 19B yes Figure 19A The latching mechanism is shown in a partial cross-sectional view in the latched state.

[0057] The corresponding reference numerals are used throughout the figures to indicate the corresponding components. Detailed Implementation

[0058] Example configurations will now be described more fully with reference to the accompanying drawings. Example configurations are provided so that this disclosure will be thorough and that the exemplary configurations will fully convey the scope of this disclosure to those skilled in the art. Specific details, such as examples of particular components, apparatus, and methods, are set forth to provide a thorough understanding of the configurations of this disclosure. It will be apparent to those skilled in the art that the example configurations may be implemented in many different forms without requiring specific details, and neither the specific details nor the example configurations should be construed as limiting the scope of this disclosure.

[0059] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular forms “a,” “an,” and “the” may also be intended to include the plural forms unless the context clearly indicates otherwise. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore describe the presence of features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein should not be construed as requiring performance in a particular order discussed or described unless specifically indicated otherwise. Alternative or alternative steps may be employed.

[0060] When an element or layer is referred to as being “on,” “joined to,” “connected to,” “attached to,” or “linked to” another element or layer, the element or layer may be directly on, directly joined to, directly connected to, directly attached to, or directly linked to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as being “directly on,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly linked to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements (e.g., “between” vs. “directly between,” “adjacent” vs. “directly adjacent,” etc.) should be interpreted in a similar manner. As used herein, the term “and / or” includes any combination or all combinations of one or more of the associated listed items.

[0061] In this document, the terms first, second, third, etc., may be used to describe various elements, parts, regions, layers, and / or segments. These elements, parts, regions, layers, and / or segments should not be limited by these terms. These terms may only be used to distinguish one element, part, region, layer, and / or segment from another. Unless clearly indicated by the context, terms such as “first,” “second,” and other numerical terms do not imply order or sequence. Therefore, the first element, first part, first region, first layer, or first segment discussed below may be referred to as a second element, second part, second region, second layer, or second segment without departing from the teachings of the example configuration.

[0062] An attachment system for use with a prosthetic device is provided. The attachment system includes a first component comprising a first surface and further comprising one of a channel and a protrusion disposed on the opposite side of the first surface. The system also includes a second component comprising a second surface and further comprising the other of a channel and a protrusion disposed on the opposite side of the second surface, the other of the channel and protrusion slidably engaging with the first of the channel and protrusion to selectively connect the first component and the second component together. One of the first and second surfaces is operable to be attached to the prosthetic device, and the other of the first and second surfaces is operable to be attached to a sole structure having a ground contact surface.

[0063] Embodiments of this disclosure may include one or more of the following optional features. In some embodiments, the channel receives the protrusion in a mating manner. The protrusion may include a first portion and a second portion, the first portion being disposed at the junction of the prosthetic device with one of the first and second surfaces, the second portion being spaced apart from the first portion and received by the channel, such that the cross-section of the protrusion at the second portion is wider than the cross-section at the first portion, to restrict removal of the protrusion from the channel. The channel and the protrusion may mate to selectively provide a dovetail joint between the first and second components.

[0064] The sole structure may include a cushioning layer disposed between the other of a first and second surface and a ground contact surface. In some examples, the ground contact surface is formed by the cushioning layer. The ground contact surface may be formed by an outer bottom layer attached to the cushioning layer.

[0065] In some embodiments, the attachment system includes a latching mechanism operable to secure the relative position between the first and second components. When the protrusion moves a predetermined distance into the channel, the latching mechanism can automatically move into a latched state to secure the relative position between the first and second components. The latching mechanism may include a male component and a female component, the male component being secured to move with one of the first and second components, and the female component being secured to move with the other of the first and second components. When the protrusion moves a predetermined distance into the channel, the female component receives the male component and secures the male component to the female component. The latching mechanism may also include a latching element secured to move with one of the first and second components, and the latching mechanism further includes a latching feature secured to move with the other of the first and second components. The latching element is operable to be actuated by and engage with the latching feature in response to a sliding engagement between the first and second components. The other of the first and second components may include an inclined surface operable to deflect a latching element and operable to position the latching element into engagement with a latching feature in response to slidably engaging one of the first and second components with the other.

[0066] In some examples, the prosthetic device is a foot prosthetic device, or a leaf-shaped prosthetic device. The first and second components can be elongated components.

[0067] Another aspect of this disclosure provides an attachment system for use with a prosthetic device. The attachment system includes: a first elongated member attached to the prosthetic device; and a second elongated member attached to a sole structure having a ground contact surface. The second elongated member slidably engages the first elongated member to attach the sole structure to the prosthetic device.

[0068] This aspect may include one or more of the following optional features. In some embodiments, the second elongated member is received in the first elongated member in a mating manner. The first elongated member may include a protrusion extending from a surface of the prosthetic device. The protrusion may include a first portion and a second portion, the first portion being disposed at the junction of the protrusion and the surface of the prosthetic device, the second portion being spaced apart from the first portion and received by a channel. The cross-section of the protrusion at the second portion may be wider than the cross-section at the first portion. The channel and the protrusion may mate to selectively provide a dovetail joint between the first elongated member and the second elongated member. In some examples, the sole structure includes a cushioning layer disposed between the second elongated member and the ground contact surface. The ground contact surface may be formed by the cushioning layer. The ground contact surface may be formed by an outer bottom layer attached to the cushioning layer.

[0069] In some embodiments, the attachment system includes a latching mechanism operable to selectively fix the relative position between a first elongated member and a second elongated member. When the first elongated member moves a predetermined distance into the second elongated member, the latching mechanism can automatically move into a latched state to fix the relative position between the first and second elongated members. The latching mechanism may include a male member fixed for movement with one of the first and second elongated members, and a female member fixed for movement with the other of the first and second elongated members. When the first elongated member moves a predetermined distance into the second elongated member, the female member can receive the male member and secure the male member to the female member. In some examples, the latching mechanism includes a latching element fixed for movement with one of the first and second elongated members, and a latching feature fixed for movement with the other of the first and second elongated members. The latching element can be operable to move relative to one of the first elongated member and the second elongated member to engage with the latching feature.

[0070] In some examples, the other of the first and second elongated components includes an inclined surface operable to deflect the latching element and to position the latching element to engage with a latching feature. The prosthetic device may be a foot prosthetic device. In some examples, the prosthetic device may be a leaf-shaped prosthetic device. The first elongated component may be integrally formed with the prosthetic device.

[0071] Another aspect of this disclosure provides an attachment system for a prosthetic device. The attachment system includes: a first component attached to the prosthetic device and including a first latching mechanism; and a second component selectively attachable to the first component. The second component includes a second latching mechanism and a ground contact surface. The second latching mechanism is configured and arranged to engage with the first latching mechanism in a latching manner when the first component moves a predetermined distance relative to the second component in a first direction.

[0072] This aspect may include one or more of the following optional features. In some embodiments, the second latching mechanism is disposed on the side of the second component opposite to the ground contact surface. The second component may be slidably attached to the first component. The first component may include one of a protrusion and a channel, and the second component may include the other of a protrusion and a channel. The channel may receive the protrusion to guide movement of the first component relative to the second component.

[0073] In some examples, the protrusion is received by a channel in a mating manner, and the protrusion is allowed to slide relative to and within the channel to allow the first component to move relative to the second component in a first direction. The protrusion may include a first end and a second end, the first end being attached to one of the first and second components, the second end being spaced apart from the first end and received by a channel of the other of the first and second components. The width of the protrusion's cross-section may increase from the first end to the second end to restrict removal of the protrusion from the channel. The second component may include a buffer layer disposed between the prosthetic device and the ground contact surface. In some embodiments, the ground contact surface is formed by the buffer layer. The ground contact surface may be formed by an outer layer attached to the buffer layer.

[0074] In some embodiments, the first latching mechanism includes a male component and a female component, said one of which is fixed for movement with the first component. The second latching mechanism may include the other of the male component and the female component, said female component being fixed for movement with the second component and capable of receiving the male component to secure the male component to the female component when the first component moves a predetermined distance in a first direction.

[0075] Another aspect of this disclosure provides an attachment system for a prosthetic device. The attachment system includes: a first component fixed for movement with the prosthetic device; and a second component that receives the first component in a mating manner and includes a ground contact surface. The second component is automatically secured to the first component when the first component moves a predetermined distance relative to the second component in a first direction.

[0076] This aspect may include one or more of the following optional features. In some embodiments, the first component includes a first latching mechanism and the second component includes a second latching mechanism. The second latching mechanism may engage with the first latching mechanism when the first component moves a predetermined distance relative to the second component in a first direction. The first latching mechanism may include one of a male component and a female component, said male component and said female component being fixed for movement with the first component, and the second latching mechanism includes the other of the male component and female component. The female component may be fixed for movement with the second component and may receive the male component to secure the male component to the female component when the first component moves a predetermined distance in the first direction. The second latching mechanism may be disposed on the side of the second component opposite to the ground contact surface. The second component may be slidably attached to the first component. In some examples, the first component includes one of a protrusion and a channel and the second component includes the other of a protrusion and a channel. The channel may receive the protrusion to guide the movement of the first component relative to the second component.

[0077] In some embodiments, the protrusion is received by a channel in a mating manner and is allowed to slide relative to and within the channel to allow the first component to move relative to the second component in a first direction. The protrusion may include a first end and a second end, the first end being attached to one of the first and second components, the second end being spaced apart from the first end and received by a channel of the other of the first and second components. The width of the protrusion's cross-section may increase from the first end to the second end to restrict removal of the protrusion from the channel. In some examples, the second component includes a buffer layer disposed between the prosthetic device and a ground contact surface. The ground contact surface may be formed of the buffer layer. The ground contact surface may also be formed of an outer layer attached to the buffer layer.

[0078] Referring to the accompanying drawings, an attachment system 10 is provided for use with the prosthetic device 12. The prosthetic device 12 may be a foot prosthetic device, and it may also be a so-called prosthetic "leaf" that can be attached to the lower portion of a person's leg. For example, the prosthetic device 12 may be attached to the distal end of a prosthetic leg and positioned to provide support during walking and running movements. Although the prosthetic device 12 may be any prosthetic device, it will be described below as a prosthetic leaf.

[0079] The prosthetic leaf-shaped component 12 includes a proximal end portion 14 and a distal end portion 16, the distal end portion 16 being disposed on the end of the prosthetic leaf-shaped component 12 opposite to the proximal end portion 14. A body portion 18 extends between the proximal end portion 14 and the distal end portion 16 and contacts both the proximal end portion 14 and the distal end portion 16. The body portion 18 includes a generally curved shape and includes a generally concave surface 20 and a generally convex surface 22 disposed on the side of the body portion 18 opposite to the concave surface 20. The body portion 18 may be formed of metal and / or carbon fiber. The material of the body portion 18, together with its generally curved shape, allows the prosthetic leaf-shaped component 12 to act as a spring during use, thereby providing vibration absorption and energy return to the user during walking and running movements.

[0080] The proximal end portion 14 may include an attachment feature 24 for attaching the prosthetic leaf-shaped member 12 to a person's leg. For example, the attachment feature 24 may be an aperture that receives a fastener (not shown) for attaching the prosthetic leaf-shaped member 12 to the distal end portion of the prosthetic leg.

[0081] The attachment system includes a first component 26 and a second component 28, which cooperate to selectively attach the sole structure 30 to the prosthetic leaf-shaped member 12. The first component 26 is shown attached to the prosthetic leaf-shaped member 12, while the second component 28 is shown attached to the sole structure 30. Although the first component 26 is shown attached to the prosthetic leaf-shaped member 12 and the second component 28 is shown attached to the sole structure 30, alternatively, the first component 26 may be attached to the sole structure 30 and the second component may be attached to the prosthetic leaf-shaped member 12.

[0082] The first component 26 includes a rail 32 that protrudes from the convex surface 22 of the body portion 18. The rail 32 may be integrally formed with the body portion 18 of the prosthetic leaf-shaped component 12, or alternatively, the rail 32 may be securely attached to the body portion 18 at the convex surface 22. If the rail 32 is integrally formed with the body portion 18, the rail may be processed into… Figure 2 and Figure 3B The shape shown. If the rail 32 is formed separately from the body portion 18, the rail 32 can be attached to the body portion 18 via mechanical fasteners such as bolts and / or adhesives.

[0083] The rail 32 includes a protrusion extending from a first end 34 to a second end 36. The first end 34 is arranged adjacent to the convex surface 22 of the body portion 18 and includes a first width (W1). The second end 36 is arranged at the end of the rail 32 opposite to the first end 34 and includes a second width (W2). Figure 3BAs shown, the second width (W2) is greater than the first width (W1).

[0084] In one configuration, rail 32 is a tapered protrusion with a constant taper extending from a first end 34 to a second end 36. Furthermore, rail 32 includes a generally flat surface 38 disposed at the second end 36 and defining the width of rail 32 at the second end. The length of rail 32 extends from the distal end 16 of body portion 18 in a direction toward the proximal end 14 of body portion 18. This length is greater than the width, and therefore, rail 32 is an elongated member extending along the longitudinal axis (L) of body portion 18.

[0085] The second component 28 includes a body 40 having a protrusion 42 and a flange 44 extending from the protrusion 42. The body 40 is disposed between and in contact with the first component 26 and the sole structure 30. Since the first component 26 is attached to the prosthetic leaf 12, connecting the first component 26 to the sole structure 30 via the body 40 also connects the sole structure 30 to the prosthetic leaf 12.

[0086] The protrusion 42 extends toward the first component 26 in a direction away from the sole structure 30 and includes a channel 46 formed in the protrusion 4. The channel 46 extends along the length of the second component 28 and along the longitudinal axis (L) of the body portion 18 to a length similar to that of the first component 26. Thus, the second component 28 is similarly an elongated component. The channel 46 includes a shape that receives the contour of the rail 32 in a mating manner. Specifically, the channel 46 includes a first end 48 having a first width (W1) and a second end 50 having a second width (W2), wherein the first width (W1) is smaller than the second width (W2). If the first component 26 includes a tapered protrusion, the channel 46 may similarly include a taper that matches the taper of the first component 26 to allow the channel 46 to receive the rail 32 of the first component 26 in a mating manner. Although both the first component 26 and the second component 28 are described as elongated components, the first component 26 and the second component 28 may have the same length or different lengths. For example, the first component 26 may include a length that is shorter or longer than that of the second component 28. Furthermore, a second component 28 of different lengths can be used with the same first component 26 at different times to allow the first component 26 to be a universal component.

[0087] As in Figure 3BAs shown, flange 44 extends outward from protrusion 42 and over sole structure 30. Flange 44 defines an outer edge 52 that substantially corresponds to the outer edge 54 of sole structure 30. Thus, the outer edge 52 of flange 44 is substantially flush with the outer edge 54 of sole structure 30. Although outer edge 52 is described and shown as substantially flush with outer edge 54, alternatively, outer edge 52 may be recessed from or extend over outer edge 54.

[0088] In operation, channel 46 slidably receives rail 32 to attach the first component 26 to the second component 28 and thus the sole structure 30 to the prosthetic leaf 12. That is, the distal end 16 of the prosthetic leaf 12 first enters through channel 46 ( Figure 2 The second component 28 and the sole structure 30 are inserted into the channel 46 at the opening 56. Therefore, the second component 28 and the sole structure 30 move along and relative to the track 32 until the distal end 16 of the prosthetic leaf-shaped member 12 contacts the stop surface 58 of the second component 28. The contact between the distal end 16 and the stop surface 58 prevents the second component 28 and the sole structure 30 from moving along... Figure 3A The direction (D) shown is further moved. In this state, the sole structure 30 is attached to the prosthesis leaf 12 via the attachment system 10 and is properly positioned relative to the prosthesis leaf 12.

[0089] Due to the shape of the track 32 and the cooperating channel 46, the sole structure 30 is restricted from disconnecting from the prosthetic leaf-shaped member 12. That is, because the width (W2) is greater than the width (W1), the track 32 and the prosthetic leaf-shaped member 12 are positioned relative to and away from the sole structure 30 in the direction (Z, Figure 3B The movement of the component 26 (as shown in the diagram) is restricted. Specifically, if a force is applied along the Z direction to the first component 26, this force is transmitted via the rail 32 to the body 40 of the second component 28. Due to the shapes of the rail 32 and the channel 46, the second component 28 moves along the Z direction together with the rail 32. In one configuration, the rail 32 and the channel 46 mate to form a dovetail joint, thereby connecting the rail 32 and the channel 46 together. This connection secures the first component 26 to the second component 28, such that these components 26, 28 are fixed for movement along the Z direction.

[0090] Although the rail 32 and the mating channel 46 are described and shown as including a dovetail joint, the rail 32 and the mating channel 46 can have another shape. That is, the rail 32 can actually have any shape in which the cross-section near the prosthetic leaf 12 is narrower than the cross-section at the second end 36. For example, the rail 32 can include a configuration of a stem and a ball, wherein the stem is attached to the prosthetic leaf 12 at the first end 34, and the ball extends from the stem and defines the second end 36. Similarly, the rail 32 can include a cross-section having a "T" shape, wherein the "T"-shaped stem is connected to the prosthetic leaf 12 and defines the first end 34, and the "T"-shaped transverse member extends from the stem and defines the second end 36. Finally, the rail can include a circular or elliptical cross-section, wherein the outer periphery is attached to the prosthetic leaf 12. Each of the aforementioned configurations can be received by the corresponding channel 46 in a mating manner to provide a slidable engagement between the first component 26 and the second component 28 while limiting the disengagement engagement between the components 26 and 28 in the direction (Z).

[0091] Removing the rail 32 from the channel 46 can be achieved by applying a force to the second component in the opposite direction to (D). This force causes the rail 32 to slide relative to and within the channel 46 as the second component 28 moves in the opposite direction to (D). This disengages the distal end 16 of the prosthetic leaf 12 from the stop surface 58 and moves it away from the stop surface 58. The movement of the second component 28 relative to the first component 26 continues until the rail 32 leaves the channel 46 at the opening 56. At this point, the second component 28 and the sole structure 30 are disconnected from the first component 26 and the prosthetic leaf 12.

[0092] The attachment system 10 can be used to attach different sole structures 30 to the prosthetic leaf 12. For example, the attachment system 10 can be used to attach a specific sole structure 30 for use in a specific activity, thereby providing the user with a sole structure designed for that specific activity.

[0093] Figure 2 The illustrated sole structure 30 includes a midsole 60 and an outsole 62. The midsole 60 is disposed between the second component 28 and the outsole 62, and the midsole 60 can be attached to both the second component 28 and the outsole via a suitable adhesive. Specifically, the adhesive can be applied to a flange 44 of the second component 28 located on the side opposite to the protrusion 42. Similarly, adhesive can be applied to the outsole 62 at a surface 64 disposed on the side opposite to the ground contact surface 66. The adhesive attaches the midsole 60 to the second component 28 at the flange 44 and to the outsole 62 at the surface 64.

[0094] The midsole 60 provides cushioning for the sole structure 30, and the midsole 60 may be formed of a foam polymer material and / or may be a fluid-filled chamber. If the midsole 60 is a fluid-filled chamber, it may be formed by bonding two pieces of polymer material together to define a chamber between the two pieces of polymer material. This chamber may be filled with a fluid, such as air, and may be pressurized. Regardless of the specific construction of the midsole 60, it is disposed between the flange 44 and the outsole 62, and is attached to the flange 44 on one side and to the outsole 62 on the other side. The materials and constructions of the midsole 60 are not limited to the exemplary configurations described. Therefore, midsole cushioning structures of other materials and constructions are also intended within the scope of this disclosure.

[0095] Figure 2 The outsole 62 shown includes a series of patterns 68. The patterns 68 are formed into the material of the outsole 62 and provide a tread pattern suitable for walking and / or running on generally smooth surfaces (i.e., concrete or asphalt surfaces). The outsole 62 may be formed of an abrasion-resistant material such as rubber to provide a degree of friction between the outsole 62 and the ground or other underlying substrate surfaces during use. Alternatively, the outsole 62 may provide a degree of relatively low-friction engagement between the outsole and the underlying surface, such as in ice skates, curling shoe outsoles, bowling shoe outsoles, or other materials or constructions that allow the user's foot to slide relative to the underlying surface, which may be typical and beneficial during a variety of sports, as will be appreciated by those skilled in the art in consideration of this description and the accompanying drawings. In addition, the outsole 62 may include straps or anti-slip studs that are received in a mate within a hook and loop fastener (not shown) to allow the outsole 62, and thus the sole structure 30 and the prosthetic leaf 12, to be attached to an external structure such as a bicycle pedal or ski boot fastener.

[0096] The midsole 60 and outsole 62 can also serve as "spacers" that allow the prosthetic leaf 12 to provide the user with an effective leg length nearly identical to the length of the user's other leg. For example, multiple different second components 28 can be provided, each comprising a different thickness measured along a direction extending from the outsole 62 to the midsole 60. The various second components 28 of different thicknesses allow the user to select a particular second component 28 that results in the effective length of the leg with the prosthetic leaf 12 and sole structure 30 being the same as the length of the user's other leg. Therefore, the user can select an appropriate second component 28 based on the footwear worn on the user's other leg. For example, when the user wears high heels on the other leg, a second component 28 with a greater thickness can be used to accommodate the height of the heels, and when the user wears flat shoes on the other leg, a second component 28 with a smaller thickness can be used.

[0097] Special reference Figure 4A A sole structure 30a is provided, and the sole structure 30a includes an outsole 62a having a series of anti-slip studs 70. Given that the structure and function of the components associated with the sole structure 30a are substantially similar, similar reference numerals are used in the following text and figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0098] Anti-slip studs 70 extend from the outsole 62a and provide the sole structure 30a with the ability to grip surfaces such as natural or synthetic turf during use. Therefore, when the user participates in sports such as American football, soccer, or hockey, the sole structure 30a can be attached to the prosthetic leaf 12 via the attachment system 10.

[0099] Special reference Figure 4B A sole structure 30b is provided, and the sole structure 30b includes an outsole 62b having a series of spikes 72. Given that the structure and function of the components associated with the sole structure 30b are substantially similar to those of the sole structure 30, similar reference numerals are used in the following text and figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0100] The spikes 72 extend from the outsole 62b and provide the sole structure 30b with the ability to grip surfaces such as natural or synthetic running tracks during use. Therefore, when the user participates in sports such as track and field, the sole structure 30b can be attached to the prosthetic leaf 12 via the attachment system 10.

[0101] Special reference Figure 4C A sole structure 30c is provided, and the sole structure 30c includes an outsole 62c having a series of patterns 68c. Given that the structure and function of the components associated with the sole structure 30c are substantially similar to those of the sole structure 30, similar reference numerals are used in the following text and figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0102] Pattern 68c extends from outsole 62c and provides sole structure 30c with the ability to grip surfaces such as loose soil, rocks, and / or snow during use. Therefore, sole structure 30c can be attached to prosthetic leaf 12 via attachment system 10 when the user is engaged in activities such as hiking.

[0103] Various sole structures 30, 30a, 30b, and 30c can be selectively attached to the prosthetic leaf-shaped member 12 via the attachment system 10. That is, each of the sole structures 30, 30a, 30b, and 30c may include a dedicated second component 28 that allows the respective sole structure 30, 30a, 30b, or 30c to be attached to the same track 32 at different times. Therefore, the prosthetic leaf-shaped member 12 may include a single track 32, but the prosthetic leaf-shaped member 12 can be used with various sole structures 30, 30a, 30b, and 30c. Furthermore, the sole structures 30, 30a, 30b, and 30c can be easily interchanged by removing the track 32 from one of the sole structures 30, 30a, 30b, and 30c and attaching that track 32 to another of the sole structures 30, 30a, 30b, and 30c. If the aforementioned relationship between the track 32 and the second component 28 of the various sole structures 30, 30a, 30b, 30c allows the user to quickly and easily change the sole structures 30, 30a, 30b, 30c attached to the prosthetic leaf-shaped piece 12, then the user can quickly and easily tailor the prosthetic leaf-shaped piece 12 for use in different activities (i.e., running, hiking, etc.).

[0104] As described above, the attachment system 10 utilizes the stop surface 58 of the second component 28 to properly position the second component 28 and the sole structure 30 relative to the first component 26 and the prosthetic leaf 12. The stop surface 58 ensures that the second component 28 and thus the sole structure 30 move a predetermined distance along the track 32 to properly position the sole structure 30 relative to the prosthetic leaf 12. The connection between the track 32 and the channel 46 restricts the first component 26 and the second component 28 along the direction (Z; Figure 3BThe separation of the first component 26 and the second component 28. However, although the first component 26 and the second component 28 are attached to each other by the interaction between the rail 32 and the channel 46, the movement of the second component along the rail 32 (i.e., along the longitudinal axis (L) of the prosthetic leaf 12) is limited only by the friction between the rail 32 and the channel 46.

[0105] The latching mechanism 74 can be used to fix the position of the second component 28 relative to the first component 26. Fixing the position of the second component 28 relative to the first component 26 also fixes the position of the sole structure 30 relative to the prosthetic leaf 12.

[0106] Reference Figure 1 , Figure 2 as well as Figures 5A to 5C The latching mechanism 74 includes a first latching member 76 attached to the prosthetic leaf 12 and a second latching member 78 attached to the second member 28. Although the first latching member 76 is shown and described as being attached to the prosthetic leaf 12 and the second latching member 78 is shown and described as being attached to the second member 28, the first latching member 76 may alternatively be attached to the second member 28 and the second latching member 78 may alternatively be attached to the prosthetic leaf 12.

[0107] The first latching member 76 includes an opening 80 and a pair of apertures 82, which are arranged on both sides of the latching member 76 and positioned at approximately a 90° angle relative to the opening 80. The second latching mechanism 78 includes a positioning tab 84 and a pair of latching elements 86 extending from a base 88. The second latching mechanism 78 may be formed of an elastic material such as plastic, and the second latching mechanism 78 is movable from a relaxed state to a compressed state.

[0108] The first latching member 76 can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages the stop surface 58, the second latching member 78 is received by the first latching member 76. Specifically, a positioning tab 84 can enter the first latching member 76 and guide the second latching member 78 into the first latching member 76.

[0109] Once the second latching member 78 is sufficiently received by the first latching member 76, then through the wall 90 of the first latching member 76 ( Figure 5CA force is applied to the latching element 86 to move it from a relaxed state to a compressed state. When the distal end 16 of the prosthetic leaf 12 contacts the stop surface 58, the latching element 86 aligns with the corresponding orifice in the orifice 82. At this time, the elastic properties of the material of the second latching member 78 cause the latching element 86 to automatically return to the relaxed state and extend from the orifice 82 (FIG. 5B). At this time, the first latching member 76 and the second latching member 78 are attached to each other, and the relative movement between the first latching member 76 and the second latching member 78 is restricted due to the engagement between the latching element 86 and the corresponding orifice 82. Therefore, the relative movement between the first member 26 and the second member 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0110] By along the direction (X; Figure 5B Applying a force to latching element 86 allows the second latching member 78 to be removed from the first latching member 76. Applying a force to latching element 86 in the direction (X) moves latching element 86 from a relaxed state to a compressed state and removes latching element 86 from orifice 82. Once latching element 86 is removed from orifice 82, the second latching member 78—together with the second member 28 and sole structure 30—can be removed from the first latching member 76 by moving the second latching member 78 in a direction away from the first latching member 76. Removing the second latching member 78 from the first latching member 76 allows channel 46 to move relative to and along rail 32. Sufficient movement of channel 46 relative to and along rail 32 allows channel 46 to disengage from rail 32. Once rail 32 is disengaged from channel 46, rail 32 can be attached to another of sole structures 30, 30a, 30b, 30c.

[0111] Reference Figures 6A to 6C An additional latching mechanism 74a is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74a, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0112] The latching mechanism 74a includes a first latching member 76a attached to the prosthetic leaf-shaped member 12 and a second latching member 78a attached to the second member 28. Although the first latching member 76a is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78a is shown and described as being attached to the second member 28, the first latching member 76a may alternatively be attached to the second member 28 and the second latching member 78a may alternatively be attached to the prosthetic leaf-shaped member 12.

[0113] The first latching member 76a includes a notch 92 having an engagement surface 94. The second latching mechanism 78a includes a latching element 86a extending from the base 88a. The second latching mechanism 78a may be formed of an elastic material such as plastic and is capable of moving from a relaxed state to a flexed state.

[0114] The first latching member 76a can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages the stop surface 58, the second latching member 78a is received by the first latching member 76a. Specifically, the latching element 86a is received by the notch 92 to fix the position of the second latching member 78a relative to the first latching member 76a.

[0115] Once the second latching member 78a is sufficiently received by the first latching member 76a, the latching element 86a moves from a flexed state to a relaxed state and falls into the recess 92. That is, the inclined surface 96 of the latching element 86a rides along the first latching member 76a and positions the latching element 86a in a flexed state. When the latching element 86a encounters the recess 92, due to the elastic properties of the material of the latching element 86a, the latching element 86a automatically moves to a relaxed state and falls into the recess 92. In doing so, the latching surface 98 of the latching element 86a engages with the engagement surface 94 of the first latching member 76a, thereby fixing the position of the first member 26 relative to the second member 28. At this time, the first latching member 76a and the second latching member 78a are attached to each other, and the relative movement between the first latching member 76a and the second latching member 78a is restricted by the engagement between the latching element 86a and the engagement surface 94. Therefore, the relative movement between the first component 26 and the second component 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0116] By along the direction (Y; Figure 6CApplying a force to latching element 86a allows the second latching member 78a to be removed from the first latching member 76a. Applying a force to latching element 86a in the direction (Y) moves latching element 86a from a relaxed state to a flexed state and removes latching element 86a from notch 92. Once latching element 86a is removed from notch 92, the second latching member 78a—along with the second member 28 and sole structure 30—can be removed from the first latching member 76a by moving the second latching member 78a in a direction away from the first latching member 76a. Removing the second latching member 78a from the first latching member 76a allows channel 46 to move relative to and along rail 32. Sufficient movement of channel 46 relative to and along rail 32 allows channel 46 to disengage from rail 32. Once the rail 32 is disconnected from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0117] Reference Figures 7A to 7C An additional latching mechanism 74b is provided for use with attachment system 10. Given that the components associated with latching mechanism 74 are substantially similar in structure and function to those associated with latching mechanism 74b, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0118] The latching mechanism 74b includes a first latching member 76b attached to the prosthetic leaf 12 and a second latching member 78b attached to the second member 28. Although the first latching member 76b is shown and described as being attached to the prosthetic leaf 12 and the second latching member 78b is shown and described as being attached to the second member 28, the first latching member 76b may alternatively be attached to the second member 28 and the second latching member 78b may alternatively be attached to the prosthetic leaf 12.

[0119] The first latching member 76b includes a recess 92 having an engagement surface 94. The second latching mechanism 78b includes a latching element 86b extending from a base 88b. The second latching mechanism 78b may be formed of an elastic material such as plastic, and the second latching mechanism 78b is movable from a relaxed state to a flexed state.

[0120] The first latching member 76b can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78b is received by the first latching member 76b. Specifically, the latching element 86b is received by the notch 92 to fix the position of the second latching member 78b relative to the first latching member 76b. Alignment of the latching element 86b with the notch 92 can be further achieved by engaging the protrusion 100 of the second latching member 78b with the stop 102 of the first latching member 76b.

[0121] Once the second latching member 78b is sufficiently received by the first latching member 76b, the latching element 86b moves from a flexed state to a relaxed state and falls into the recess 92. That is, the inclined surface 96 of the latching element 86b travels along the first latching member 76b and positions the latching element 86b in a flexed state. When the latching element 86b encounters the recess 92, due to the elastic properties of the material of the latching element 86b, the latching element 86b automatically moves to a relaxed state and falls into the recess 92. In doing so, the latching surface 98 of the latching element 86b engages with the engagement surface 94 of the first latching member 76b, thereby fixing the position of the first member 26 relative to the second member 28. At this time, the first member 76b and the second member 78b are attached to each other and the relative movement between the first member 76b and the second member 78b is restricted due to the engagement between the latching element 86b and the engagement surface 94. Therefore, the relative movement between the first component 26 and the second component 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0122] By along the direction (W; Figure 7C Applying a force to latching element 86b allows the second latching member 78b to be removed from the first latching member 76b. Applying a force to latching element 86b in the direction (W) moves it from a relaxed state to a flexed state and removes it from the notch 92. Once latching element 86b is removed from the notch 92, the second latching member 78b—along with the second member 28 and the sole structure 30—can be removed from the first latching member 76b by moving it away from the first latching member 76b. Removing the second latching member 78b from the first latching member 76b allows channel 46 to move relative to and along rail 32. Sufficient movement of channel 46 relative to and along rail 32 allows channel 46 to disengage from rail 32. Once the rail 32 is disconnected from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0123] Reference Figures 8A to 8C An additional latching mechanism 74c is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74c, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0124] The latching mechanism 74c includes a first latching member 76c attached to the prosthetic leaf-shaped member 12 and a second latching member 78c attached to the second member 28. Although the first latching member 76c is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78c is shown and described as being attached to the second member 28, the first latching member 76c may alternatively be attached to the second member 28 and the second latching member 78c may alternatively be attached to the prosthetic leaf-shaped member 12.

[0125] The first latching member 76c includes a channel 104 having an engagement surface 94c and an inclined surface 106. The second latching mechanism 78c includes a latching element 86c extending from a base 88c. The second latching mechanism 78c may be formed of an elastic material such as plastic and is capable of moving from a relaxed state to a flexed state.

[0126] The first latching member 76c can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78c is received by the first latching member 76c. Specifically, the latching element 86c is received by the channel 104 to fix the position of the second latching member 78c relative to the first latching member 76c.

[0127] Once the second latching member 78c is sufficiently received by the first latching member 76c, the latching element 86c moves from a relaxed state to a flexed state when the inclined surface 96 engages with the inclined surface 106. The latching element 86c remains in the flexed state until it passes through the channel 104 and the latching surface 98 engages with the engagement surface 94c. That is, the inclined surface 96 of the latching element 86c travels along the inclined surface 106 and positions the latching element 86c in a flexed state. As the latching element 86c passes through the entire channel 104, it automatically moves to a relaxed state and is positioned in a flexed state due to the elastic properties of the material of the latching element 86c. Figure 8CIn the configuration shown, the latching surface 98 of the latching element 86c engages with the engagement surface 94 of the first latching member 76c, thereby fixing the position of the first member 26 relative to the second member 28. At this time, the first member 76c and the second member 78c are attached to each other, and the relative movement between the first member 76c and the second member 78c is restricted due to the engagement between the latching element 86c and the engagement surface 94c. Therefore, the relative movement between the first member 26 and the second member 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0128] By along the direction (Q; Figure 8C Applying a force to latching element 86c allows the second latching member 78c to be removed from the first latching member 76c. Applying a force to latching element 86c in direction (Q) moves latching element 86c from a relaxed state to a flexed state and removes latching element 86c from engagement with engagement surface 94c. Once latching element 86c is removed from engagement with engagement surface 94c, the second latching member 78c can be removed from the first latching member 76c by moving the second latching member 78c—along with the second member 28 and sole structure 30—away from the first latching member 76c. Removing the second latching member 78c from the first latching member 76c allows channel 46 to move relative to and along rail 32. Sufficient movement of channel 46 relative to and along rail 32 allows channel 46 to disengage from rail 32. Once the rail 32 is disconnected from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0129] Reference Figures 9A to 9C An additional latching mechanism 74d is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74d, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0130] The latching mechanism 74d includes a first latching member 76d attached to the prosthetic leaf-shaped member 12 and a second latching member 78d attached to the second member 28. Although the first latching member 76d is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78d is shown and described as being attached to the second member 28, the first latching member 76d may alternatively be attached to the second member 28 and the second latching member 78d may alternatively be attached to the prosthetic leaf-shaped member 12.

[0131] The second latching member 78d includes a latching element 86d extending from the base 88d. The second latching mechanism 78d may be formed of an elastic material such as plastic and / or rubber and is capable of moving from a relaxed state to a flexed state.

[0132] The first latching member 76d can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78d is positioned adjacent to the first latching member 76d. Specifically, the latching element 86d is opposite to the protrusion 108 of the first latching member 76d and the latching element 86d can be attached to the protrusion 108 to fix the position of the second latching member 78d relative to the first latching member 76d.

[0133] Once the second latching member 78d is sufficiently attached to the first latching member 76d, the latching element 86d moves from a relaxed state to a flexed state. Specifically, a force can be applied to the latching element 86d to move it from the relaxed state ( Figure 9C ) Move to a flexed state ( Figure 9A and Figure 9B And move to engage with the protrusion 108 of the first latching member 76d.

[0134] The latching element 86d may include a hook-shaped portion 110, which is received by a recess 112 of the first latching member 76d when the latching element 86d returns to the relaxed state. At this time, the first member 76d and the second member 78d are attached to each other, and the relative movement between the first member 76d and the second member 78d is restricted due to the engagement between the hook-shaped portion 110 of the latching element 86d and the recess 112 of the first latching member 76d. Therefore, the relative movement between the first member 26 and the second member 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0135] By along the direction (R; Figure 9CApplying a force to latching element 86d allows the second latching member 78d to be removed from the first latching member 76d. Applying a force to latching element 86d in the direction (R) moves latching element 86d from a relaxed state to a flexed state and removes latching element 86d from engagement with recess 112. Once latching element 86d is removed from engagement with recess 112, the second latching member 78d—along with the second member 28 and sole structure 30—can be removed from the first latching member 76d by moving the second latching member 78d in a direction away from the first latching member 76d. Removing the second latching member 78d from the first latching member 76d allows channel 46 to move relative to and along rail 32. Sufficient movement of channel 46 relative to and along rail 32 allows channel 46 to disengage from rail 32. Once the rail 32 is disconnected from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0136] Reference Figures 10A to 10C An additional latching mechanism 74e is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74e, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0137] The latching mechanism 74e includes a first latching member 76e attached to the prosthetic leaf-shaped member 12 and a second latching member 78e attached to the second member 28. Although the first latching member 76e is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78e is shown and described as being attached to the second member 28, the first latching member 76e may alternatively be attached to the second member 28 and the second latching member 78e may alternatively be attached to the prosthetic leaf-shaped member 12.

[0138] The first latching component 76e includes a mating surface 94e. Figure 10B The notch 92e and the magnet 114 located on the opposite side of the notch 92e in the first latching member 76e. Figure 10B and Figure 10C As shown, the notch 92e and the magnet 114 can be positioned on opposite sides of the body portion 18 of the prosthetic leaf-shaped member 12 such that the notch 92e is formed in the material of the body portion 18 and the magnet 114 is recessed into the body portion 18. The second latching mechanism 78e includes a protrusion 116 extending from the base 88e and including at least a portion formed of metal. At least a portion of the base 88e and the protrusion 116 of the second latching mechanism 78e can be formed of an elastic material such as plastic and can move from a relaxed state to a flexed state.

[0139] The first latching member 76e can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78e is received by the first latching member 76e. Specifically, the latching element 86e is received by the notch 92e to secure the position of the second latching member 78e relative to the first latching member 76e.

[0140] Once the second latching member 78e is sufficiently received by the first latching member 76e, the latching element 86e moves from a flexed state to a relaxed state and falls into the recess 92. That is, the protrusion 116 of the latching element 86e travels along the first latching member 76e and positions the latching element 86e in a flexed state. When the latching element 86e encounters the recess 92e, due to the elastic properties of the material of the latching element 86e and due to the force applied by the magnet to the protrusion 116, the latching element 86e automatically moves to a relaxed state and falls into the recess 92e. In doing so, the latching surface 98e of the latching element 86e engages with the engagement surface 94e of the first latching member 76e, thereby fixing the position of the first member 26 relative to the second member 28. At this time, the first member 76e and the second member 78e are attached to each other, and the relative movement between the first member 76e and the second member 78e is restricted by the engagement between the latching element 86e and the engagement surface 94e. Therefore, the relative movement between the first component 26 and the second component 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0141] By along the direction (S; Figure 10C Applying a force to latching element 86e allows the second latching member 78e to be removed from the first latching member 76e. Applying a force to latching element 86e in the direction (S) moves latching element 86e from a relaxed state to a flexed state and removes latching element 86e from notch 92e. Once latching element 86e is removed from notch 92e, the second latching member 78e—along with the second member 28 and sole structure 30—can be removed from the first latching member 76e by moving the second latching member 78e in a direction away from the first latching member 76e. Removing the second latching member 78e from the first latching member 76e allows channel 46 to move relative to and along rail 32. Sufficient movement of channel 46 relative to and along rail 32 allows channel 46 to disengage from rail 32. Once the rail 32 is disconnected from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0142] Reference Figures 11A to 11CAn additional latching mechanism 74f is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74f, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0143] The latching mechanism 74f includes a first latching member 76f attached to the prosthetic leaf-shaped member 12 and a second latching member 78f attached to the second member 28. Although the first latching member 76f is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78f is shown and described as being attached to the second member 28, the first latching member 76f may alternatively be attached to the second member 28 and the second latching member 78f may alternatively be attached to the prosthetic leaf-shaped member 12.

[0144] The first latching member 76f includes a channel 104f and a protrusion 118, the protrusion 118 including an engagement surface 94f formed at its distal end extending into the channel 104f. The second latching mechanism 78f includes a latching element 86f extending from a base 88f and including a series of peaks 120 and valleys 122 formed between adjacent peaks 120.

[0145] The first latching member 76f can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78f is received by the first latching member 76f. Specifically, the latching element 86f is received by the channel 104f to fix the position of the second latching member 78f relative to the first latching member 76f.

[0146] Once the second latching member 78f is sufficiently received by the first latching member 76f, the latching element 86f moves to engage with the engagement surface 94f of the protrusion 118. That is, the protrusion 118 moves along the latching element 86f and is received within the valley 122 formed between adjacent peaks 120. Depending on the extent to which the latching element 86f extends into the channel 104f, the latching element 86f can be received within any of the valleys 122. Once the movement of the latching element 86f into the channel 104f ceases and the protrusion 118 is received within the valley 122, the first member 76f and the second member 78f are attached to each other, and the relative movement between the first member 76f and the second member 78f is restricted by the engagement between the latching element 86f and the engagement surface 94f of the protrusion 118. Therefore, the relative movement between the first component 26 and the second component 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0147] By applying force to the release plate 124 to press it down and remove the protrusion 118 from its engagement with the valley 122, the second latching member 78f can be removed from the first latching member 76f. Specifically, the applied force causes the protrusion 118 to move in the direction (T) away from the latching element 86f. Once the engagement surface 94f of the protrusion 118 is removed from its engagement with the latching element 86f, the second latching member 78f—along with the second member 28 and the sole structure 30—can be removed from the first latching member 76f by moving the second latching member 78f in a direction away from the first latching member 76f. Removing the second latching member 78f from the first latching member 76f allows the channel 46 to move relative to and along the rail 32. Sufficient movement of the channel 46 relative to and along the rail 32 allows the channel 46 to disengage from the rail 32. Once the rail 32 is disconnected from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0148] Reference Figures 12A to 12B An additional latching mechanism 74g is provided for use with attachment system 10. Given that the components associated with latching mechanism 74g are structurally and functionally similar to those with latching mechanism 74g, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0149] The latching mechanism 74g includes a first latching member 76g attached to the prosthetic leaf-shaped member 12 and a second latching member 78g attached to the second member 28. Although the first latching member 76g is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78g is shown and described as being attached to the second member 28, the first latching member 76g may alternatively be attached to the second member 28 and the second latching member 78g may alternatively be attached to the prosthetic leaf-shaped member 12.

[0150] The first latching member 76g includes a buckle 126. The first latching member 76g can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf-shaped member 12 engages with the stop surface 58, the second latching member 78g is positioned adjacent to the first latching member 76g. Specifically, the buckle 126 receives the strip portion 128 of the second latching member 78g and can be attached to the strip portion 128 to secure the position of the second latching member 78g relative to the first latching member 76g.

[0151] The buckle 126 may include a post 130, which is received in one of a series of orifices 132 associated with the band portion 128. When the post 130 is received in one of the orifices 132, the position of the band portion 128 relative to the buckle 126 is substantially fixed. At this time, the first latching member 76g and the second latching member 78g are attached to each other, and the relative movement between the first latching member 76g and the second latching member 78g is restricted due to the engagement between the buckle 126 and the band portion 128. Therefore, the relative movement between the first member 26 and the second member 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0152] By applying force to the post 130 to remove it from the strip portion 128, the second latching member 78g can be removed from the first latching member 76g. Once the post 130 is removed from engagement with the strip portion 128, the second latching member 78g—along with the second member 28 and the sole structure 30—can be removed from the first latching member 76g by moving the second latching member 78g in a direction away from the first latching member 76g. Removing the second latching member 78g from the first latching member 76g allows the channel 46 to move relative to and along the rail 32. Sufficient movement of the channel 46 relative to and along the rail 32 allows the channel 46 to disengage from the rail 32. Once the rail 32 is disengaged from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0153] Reference Figures 13A to 13BAn additional latching mechanism 74h is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74h, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0154] The latching mechanism 74h includes a first latching member 76h attached to the prosthetic leaf-shaped member 12 and a second latching member 78h attached to the second member 28. Although the first latching member 76h is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78h is shown and described as being attached to the second member 28, the first latching member 76h may alternatively be attached to the second member 28 and the second latching member 78h may alternatively be attached to the prosthetic leaf-shaped member 12.

[0155] The first latching member 76h includes a latching post 134. The first latching member 76h can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78h is positioned adjacent to the first latching member 76h. Specifically, the latching post 134 can be inserted into one of a series of orifices 132 in the strip portion 128 to secure the position of the second latching member 78h relative to the first latching member 76h.

[0156] When the latching pin 134 is received in one of the orifices 132, the position of the strip portion 128 relative to the first latching member 76h is substantially fixed. At this time, the first latching member 76h and the second latching member 78h are attached to each other, and the relative movement between the first latching member 76h and the second latching member 78h is restricted due to the engagement between the latching pin 134 and the strip portion 128. Therefore, the relative movement between the first member 26 and the second member 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0157] The second latching member 78h can be removed from the first latching member 76h by removing the latching post 134 from the strip portion 128. Once the post 134 is removed from engagement with the strip portion 128, the second latching member 78h can be removed from the first latching member 76h by moving the second latching member 78h—along with the second member 28 and the sole structure 30—away from the first latching member 76h. Removing the second latching member 78h from the first latching member 76h allows the channel 46 to move relative to and along the rail 32. Sufficient movement of the channel 46 relative to and along the rail 32 allows the channel 46 to disengage from the rail 32. Once the rail 32 is disengaged from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0158] Reference Figures 14A to 14C An additional latching mechanism 74i is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74i, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0159] The latching mechanism 74i includes a first latching member 76i attached to the prosthetic leaf-shaped member 12 and a second latching member 78i attached to the second member 28. Although the first latching member 76i is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78i is shown and described as being attached to the second member 28, the first latching member 76i may alternatively be attached to the second member 28 and the second latching member 78i may alternatively be attached to the prosthetic leaf-shaped member 12.

[0160] The first latching member 76i includes a channel 104i and a recess 136 communicating with the channel 104i. The second latching mechanism 78i includes a latching element 86i that selectively engages with a push bar 140. The push bar 140 is disposed within the recess 136 and extends into the channel 104i. The push bar 140 is biased along the channel by a biasing member 142. Figure 14B The direction (M) shown is biased. The biasing member 142 may be a helical spring that acts on the insert 140 to bias the insert 140 into the channel 104i.

[0161] The first latching member 76i can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78i is received by the first latching member 76i. Specifically, the latching element 86i is received by the channel 104i to fix the position of the second latching member 78i relative to the first latching member 76i.

[0162] Once the second latching member 78i is sufficiently received by the first latching member 76i, the latching element 86i moves into the channel 104i and engages with the insert 140. That is, when the latching element 86i initially enters the channel 104i, the latching element 86i causes the insert 140 to move in the opposite direction to the direction (M). Once the movement of the latching element 86i into the channel 104i stops due to the engagement of the distal end 16 of the prosthetic leaf 12 with the stop surface 58, the insert 140 is received by one of the locking portions 138 formed in the latching element 86i. Once the movement of the latching element 86i into the channel 104i stops and the insert 140 is received within the locking portion 138, the first member 76i and the second member 78i are attached to each other and the relative movement between the first member 76i and the second member 78i is restricted. Therefore, the relative movement between the first component 26 and the second component 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0163] By applying a force to the insert 140 in a direction opposite to the direction (M) and resisting the force applied to the insert 140 by the biasing member 142, the second latching member 78i can be removed from the first latching member 76i. Once the insert 140 is removed from the locking portion 138, the second latching member 78i—along with the second member 28 and the sole structure 30—can be removed from the first latching member 76i by moving the second latching member 78i in a direction away from the first latching member 76i. Removing the second latching member 78i from the first latching member 76i allows the channel 46 to move relative to and along the rail 32. Sufficient movement of the channel 46 relative to and along the rail 32 allows the channel 46 to disengage from the rail 32. Once the rail 32 is disengaged from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0164] Reference Figures 15A to 15CAnother latching mechanism 74j is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74j, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0165] The latching mechanism 74j includes a first latching member 76j attached to the prosthetic leaf-shaped member 12 and a second latching member 78j attached to the second member 28. Although the first latching member 76j is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78j is shown and described as being attached to the second member 28, the first latching member 76j may alternatively be attached to the second member 28 and the second latching member 78j may alternatively be attached to the prosthetic leaf-shaped member 12.

[0166] The first latching member 76j includes a recess 144 that receives a ball 146 and a biasing member 148 therein. The biasing member 148 biases the ball 146 in a direction (N) away from the recess 144. The second latching member 78j includes a recess 150 extending into the second latching member 78j.

[0167] The first latching member 76j can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the ball 146 is automatically received by the fovea 150 due to the biasing force applied to the ball 146 by the biasing member 148.

[0168] Once the ball 146 is fully received by the socket 150, the position of the first component 26 relative to the second component 28 is fixed. At this time, the first component 76j and the second component 78j are attached to each other, and the relative movement between the first component 76j and the second component 78j is restricted. Therefore, the relative movement between the first component 26 and the second component 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0169] The second latching member 78j—together with the second member 28 and the sole structure 30—can be disengaged from the ball 146 by moving the second latching member 78j in a direction away from the first latching member 76j. Removing the socket 150 from the ball 146 allows the channel 46 to move relative to and along the rail 32. Sufficient movement of the channel 46 relative to and along the rail 32 allows the channel 46 to disengage from the rail 32. Once the rail 32 is disengaged from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0170] Reference Figures 16A to 16B An additional latching mechanism 74k is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74k are substantially similar to those of latching mechanism 74k, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0171] The latching mechanism 74k includes a first latching member 76k attached to the prosthetic leaf-shaped member 12 and a second latching member 78k attached to the second member 28. Although the first latching member 76k is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78k is shown and described as being attached to the second member 28, the first latching member 76k may alternatively be attached to the second member 28 and the second latching member 78k may alternatively be attached to the prosthetic leaf-shaped member 12.

[0172] The first latching member 76k includes a channel 104k and a recess 136k communicating with the channel 104k. The second latching mechanism 78k includes a latching element 86k that selectively engages with a push bar 140k. The push bar 140k is disposed within the recess 136k and extends into the channel 104k. The push bar 140k is positioned along a biasing member 142k. Figure 16A The direction (O) shown is biased. The biasing member 142k can be a helical spring that acts on the insert 140k to bias the insert 140k into the channel 104k.

[0173] The first latching member 76k can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78k is received by the first latching member 76k. Specifically, the latching element 86k is received by the channel 104k to fix the position of the second latching member 78k relative to the first latching member 76k.

[0174] Once the second latching member 78k is fully received by the first latching member 76k, the latching element 86k moves into the channel 104k and engages with the insert 140k. That is, as the rounded distal end 152 of the latching element 86k initially enters the channel 104k, the latching element 86k causes the insert 140k to move in the opposite direction to direction (O). Once the movement of the latching element 86k into the channel 104k stops due to engagement of the distal end 16 of the prosthetic leaf 12 with the stop surface 58, the insert 140k is received by the orifice 154 formed in the latching element 86k. Once the movement of the latching element 86k into the channel 104k stops and the insert 140k is received within the orifice 154, the first member 76k and the second member 78k are attached to each other and relative movement between the first member 76k and the second member 78k is restricted. Therefore, the relative movement between the first component 26 and the second component 28 along the longitudinal axis (L) of the prosthetic leaf 12 is restricted, and the position of the sole structure 30 relative to the prosthetic leaf 12 is maintained.

[0175] The second latching member 78k can be removed from the first latching member 76k by applying a force to the insert 140k in the direction opposite to direction (O) and resisting the force applied to the insert 140k by the biasing member 142k. Once the insert 140k is removed from the orifice 154, the second latching member 78k—along with the second member 28 and the sole structure 30—can be removed from the first latching member 76k by moving the second latching member 78k in a direction away from the first latching member 76k. Removing the second latching member 78k from the first latching member 76k allows the channel 46 to move relative to and along the rail 32. Sufficient movement of the channel 46 relative to and along the rail 32 allows the channel 46 to disengage from the rail 32. Once the rail 32 is disengaged from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0176] Reference Figures 17A to 17B An additional latching mechanism 74l is provided for use with attachment system 10. Given that the components associated with latching mechanism 74l are substantially similar in structure and function to those associated with latching mechanism 74l, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0177] The latching mechanism 74l includes a first latching member 76l attached to the prosthetic leaf-shaped member 12 and a second latching member 78l attached to the second member 28. Although the first latching member 76l is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78l is shown and described as being attached to the second member 28, the first latching member 76l may alternatively be attached to the second member 28 and the second latching member 78l may alternatively be attached to the prosthetic leaf-shaped member 12.

[0178] The first latching member 76l includes a post 156 having a pair of protrusions 158 defining a pair of locking portions 160. The second latching member 78l includes a pair of extensions 162 formed of a flexible material and extending into a channel 164.

[0179] The first latching member 76l can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78l receives the first latching member 76l. Specifically, the post 156 is received by the channel 164, wherein the extension 162 slides along the corresponding outer surface 168 of the post 156. Because the extension 162 is formed of a flexible material, the extension 162 is bent into... Figure 17A The shape shown is such that the extension 162 bends further upon encountering the protrusion 158 until it is received within the corresponding locking portion 160. At this point, the position of the second latching member 78l relative to the first latching member 76l is fixed.

[0180] The second latching member 78l can be removed from the first latching member 76l by moving the second latching member 78l—together with the second member 28 and the sole structure 30—away from the first latching member 76l to allow the extension 162 to disengage from the locking member 160 and slide again along the surface 168 of the post 156. Removing the second latching member 78l from the first latching member 76l allows the channel 46 to move relative to and along the rail 32. Sufficient movement of the channel 46 relative to and along the rail 32 allows the channel 46 to disengage from the rail 32. Once the rail 32 is disengaged from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0181] Reference Figures 18A to 18BAn additional latching mechanism 74m is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74m, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0182] The latching mechanism 74m includes a first latching member 76m attached to the prosthetic leaf-shaped member 12 and a second latching member 78m attached to the second member 28. Although the first latching member 76m is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78m is shown and described as being attached to the second member 28, the first latching member 76m may alternatively be attached to the second member 28 and the second latching member 78m may alternatively be attached to the prosthetic leaf-shaped member 12.

[0183] The first latching component 76m includes a retainer 170, which includes an opening 172 and a pair of spring members 174 arranged in the retainer 170. The second latching component 78m includes a latching element 86m, which is shaped approximately to approximate the opening 172.

[0184] The first latching member 76m can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78m is received by the retainer 170. Specifically, the latching element 86m is positioned above the opening 172 and applies force to the spring members 174, causing the spring members 174 to move away from each other. Once the latching element 86m is fully in place, it is held within the opening 172 by the action of the spring members 174 in a direction toward each other. At this point, the position of the second latching member 78m relative to the first latching member 76m is fixed.

[0185] The second latching member 78m can be removed from the first latching member 76m by moving the second latching member 78m—together with the second member 28 and the sole structure 30—away from the first latching member 76m to allow the latching element 86m to disengage from the spring member 174 and be removed from the opening 172. Removing the second latching member 78m from the first latching member 76m allows the channel 46 to move relative to and along the rail 32. Sufficient movement of the channel 46 relative to and along the rail 32 allows the channel 46 to disengage from the rail 32. Once the rail 32 is disengaged from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0186] Reference Figures 19A to 19B An additional latching mechanism 74n is provided for use with attachment system 10. Given that the structure and function of the components associated with latching mechanism 74 are substantially similar to those of latching mechanism 74n, similar reference numerals are used hereinafter and in the figures to identify similar components, while similar reference numerals including letter extensions are used to identify modified components.

[0187] The latching mechanism 74n includes a first latching member 76n attached to the prosthetic leaf-shaped member 12 and a second latching member 78n attached to the second member 28. Although the first latching member 76n is shown and described as being attached to the prosthetic leaf-shaped member 12 and the second latching member 78n is shown and described as being attached to the second member 28, the first latching member 76n may alternatively be attached to the second member 28 and the second latching member 78n may alternatively be attached to the prosthetic leaf-shaped member 12.

[0188] The first latching member 76n includes a recess 176 having a post 178 disposed therein.

[0189] In one configuration, post 178 includes a ball 180 disposed at its distal end. The second latching member 78n includes a pair of engaging blocks 182 biased toward each other by a pair of biasing members 184. In one configuration, the biasing members 184 are helical springs.

[0190] The first latching member 76n can be positioned relative to the rail 32 such that when the second member 28 moves a predetermined distance relative to the first member 26 and the distal end 16 of the prosthetic leaf 12 engages with the stop surface 58, the second latching member 78n is received by the recess 176. Specifically, the ball 180 engages with the engaging blocks 182, thereby causing the engaging blocks 182 to move away from each other against the biasing member 184. Each engaging block 182 may include a locking portion 186 sized to match the outer periphery of the ball 180. In this way, the engagement between the engaging blocks 182 and the ball 180 keeps the second latching member 78n in contact with the first latching member 76n. At this time, the position of the second latching member 78n relative to the first latching member 76n is fixed.

[0191] The second latching member 78n can be removed from the first latching member 76n by moving the second latching member 78n—together with the second member 28 and the sole structure 30—away from the first latching member 76n to allow the engaging block 182 to disengage from the ball 180 and be removed from the open recess 176. Removing the second latching member 78n from the first latching member 76n allows the channel 46 to move relative to and along the rail 32. Sufficient movement of the channel 46 relative to and along the rail 32 allows the channel 46 to disengage from the rail 32. Once the rail 32 is disengaged from the channel 46, the rail 32 can be attached to another of the sole structures 30, 30a, 30b, and 30c.

[0192] The following terms provide exemplary configurations for attachment systems for fastening to prosthetic devices as described above.

[0193] Clause 1: An attachment system for use with a prosthetic device, the attachment system comprising a first component and a second component, the first component including a first surface and further including one of a channel and a protrusion disposed on the opposite side of the first surface, the second component including a second surface and further including the other of the channel and the protrusion disposed on the opposite side of the second surface, the other of the channel and the protrusion slidably engaging with the first of the channel and the protrusion to selectively attach the first component and the second component together. The first surface and the second surface are operable to be attached to the prosthetic device and the other of the first surface and the second surface are operable to be attached to a sole structure having a ground contact surface.

[0194] Clause 2: The attachment system according to Clause 1, wherein the slidable engagement includes the channel receiving the protrusion in a mating manner within the channel.

[0195] Clause 3: An attachment system according to any of the preceding clauses, wherein the protrusion includes a first portion and a second portion, the first portion being disposed at the junction of the prosthetic device with one of the first surface and the second surface, the second portion being spaced apart from the first portion and received by the channel, and the cross-section of the protrusion at the second portion being wider than the cross-section at the first portion.

[0196] Clause 4: The attachment system according to Clause 3, wherein the channel mates with the protrusion to selectively provide a dovetail joint between the first component and the second component.

[0197] Clause 5: An attachment system according to any of the preceding clauses, wherein the sole structure includes a cushioning layer disposed between the other of the first surface and the second surface and the ground contact surface.

[0198] Clause 6: The attachment system according to Clause 5, wherein the ground contact surface is formed by the buffer layer.

[0199] Clause 7: The attachment system according to Clause 5, wherein the ground contact surface is formed by the outer bottom layer attached to the buffer layer.

[0200] Clause 8: The attachment system according to any of the preceding clauses further includes a latching mechanism operable to fix the relative positions of the first component and the second component.

[0201] Clause 9: The attachment system according to Clause 8, wherein when the protrusion is moved a predetermined distance in the channel, the latching mechanism automatically moves into a latching state to fix the relative position between the first component and the second component.

[0202] Clause 10: The attachment system according to Clause 9, wherein the latching mechanism includes a male component and a female component, the male component being fixed for movement with one of the first component and the second component, the female component being fixed for movement with the other of the first component and the second component, wherein when the protrusion is moved to the predetermined distance in the channel, the female component receives the male component and secures the male component to the female component.

[0203] Clause 11: The attachment system according to Clause 8, wherein the latching mechanism includes a latching element fixed for movement with one of the first and second components, and the latching mechanism further includes a latching feature fixed for movement with the other of the first and second components, the latching element being operable to be actuated by and engaged with the latching feature in response to a sliding engagement between the first and second components.

[0204] Clause 12: The attachment system according to Clause 11, wherein the other of the first component and the second component includes an inclined surface operable to deflect the latching element to position the latching element to engage the latching feature.

[0205] Clause 13: An attachment system according to any of the preceding clauses, wherein the prosthetic device is a foot prosthetic device.

[0206] Clause 14: The attachment system according to Clause 13, wherein the prosthetic device is a leaf-shaped prosthetic device.

[0207] Clause 15: An attachment system according to any of the preceding clauses, wherein the first component and the second component are elongated components.

[0208] Clause 16: An attachment system for use with a prosthetic device, the attachment system comprising: a first elongated member attached to the prosthetic device and a second elongated member attached to a sole structure having a ground contact surface, the second elongated member slidably receiving the first elongated member to attach the sole structure to the prosthetic device.

[0209] Clause 17: The attachment system according to Clause 16, wherein the second elongated member receives the first elongated member in a mating manner.

[0210] Clause 18: An attachment system according to any of the preceding clauses, wherein the first elongated member includes a protrusion extending from the surface of the prosthetic device, the protrusion including a first portion and a second portion, the first portion being disposed at the junction of the protrusion and the surface of the prosthetic device, and the second portion being spaced apart from the first portion and received by the second member.

[0211] Clause 19: The attachment system according to Clause 18, wherein the cross-section of the protrusion at the second portion is wider than the cross-section at the first portion.

[0212] Clause 20: The attachment system according to Clause 19, wherein the second component includes a channel that mates with the protrusion to selectively provide a dovetail joint between the first elongated component and the second elongated component.

[0213] Clause 21: An attachment system according to any of the preceding clauses, wherein the sole structure includes a cushioning layer disposed between the second elongated member and the ground contact surface.

[0214] Clause 22: The attachment system according to Clause 21, wherein the ground contact surface is formed by the buffer layer.

[0215] Clause 23: The attachment system according to Clause 21, wherein the ground contact surface is formed by the outer bottom layer attached to the buffer layer.

[0216] Clause 24: The attachment system according to any of the preceding clauses further includes a latching mechanism operable to selectively fix the relative position between the first elongated member and the second elongated member.

[0217] Clause 25: The attachment system according to Clause 24, wherein when the first elongated member is slidably moved to a predetermined distance in the second elongated member, the latching mechanism automatically moves to a latching state to fix the relative position between the first elongated member and the second elongated member.

[0218] Clause 26: The attachment system according to Clause 25, wherein the latching mechanism includes a male member fixed for movement with one of the first elongated member and the second elongated member, and the latching mechanism further includes a female member fixed for movement with the other of the first elongated member and the second elongated member, wherein when the first elongated member moves to the predetermined distance in the second elongated member, the female member receives the male member and secures the male member to the female member.

[0219] Clause 27: The attachment system according to Clause 24, wherein the latching mechanism includes a latching element and a latching feature, the latching element being fixed for movement with one of the first elongated member and the second elongated member, the latching feature being fixed for movement with the other of the first elongated member and the second elongated member, and the latching element being operable to move relative to one of the first elongated member and the second elongated member to engage with the latching feature.

[0220] Clause 28: The attachment system according to Clause 27, wherein the other of the first elongated member and the second elongated member includes an inclined surface operable to deflect the latching element and operable to position the latching element to engage the latching feature.

[0221] Clause 29: An attachment system according to any of the preceding clauses, wherein the prosthetic device is a foot prosthetic device.

[0222] Clause 30: The attachment system according to Clause 29, wherein the foot prosthesis is a leaf-shaped prosthesis.

[0223] Clause 31: An attachment system according to any of the preceding clauses, wherein the first elongated component is integrally formed with the prosthetic device.

[0224] Clause 32: An attachment system for a prosthetic device, the attachment system comprising a first component and a second component, the first component being attached to the prosthetic device and including a first latching mechanism, the second component being selectively attached to the first component and including a second latching mechanism and a ground contact surface, the second latching mechanism being configured and arranged to engage with the first latching mechanism in a latching manner when the first component moves a predetermined distance relative to the second component in a first direction.

[0225] Clause 33: The attachment system as described in Clause 32, wherein the second latching mechanism is arranged on the side of the second component opposite to the ground contact surface.

[0226] Clause 34: An attachment system according to any of the preceding clauses, wherein the second component is slidably attached to the first component.

[0227] Clause 35: An attachment system according to any of the preceding clauses, wherein the first component includes one of a protrusion and a channel and the second component includes the protrusion and the channel receiving the protrusion to guide movement of the first component relative to the second component.

[0228] Clause 36: The attachment system as described in Clause 35, wherein the protrusion is received by the channel in a mating manner, and the protrusion is allowed to slide relative to and within the channel to allow the first component to move relative to the second component in the first direction.

[0229] Clause 37: The attachment system according to Clause 36, wherein the protrusion includes a first end and a second end, the first end being attached to one of the first component and the second component, the second end being spaced apart from the first end and received by a channel of the other of the first component and the second component, and the width of the cross-section of the protrusion increasing from the first end to the second end to restrict the removal of the protrusion from the channel.

[0230] Clause 38: An attachment system according to any of the preceding clauses, wherein the second component includes a buffer layer disposed between the prosthetic device and the ground contact surface.

[0231] Clause 39: The attachment system according to Clause 38, wherein the ground contact surface is formed by the buffer layer.

[0232] Clause 40: The attachment system according to Clause 38, wherein the ground contact surface is formed by an outer bottom layer attached to the buffer layer.

[0233] Clause 41: An attachment system according to any of the preceding clauses, wherein the first latching mechanism includes a male component and a female component, the male component and the female component being fixed for movement with the first component, and the second latching mechanism includes the other male component and the female component, the female component being fixed for movement with the second component and receiving the male component to secure the male component to the female component when the first component moves a predetermined distance in the first direction.

[0234] Clause 42: An attachment system for a prosthetic device, the attachment system comprising a first component and a second component, the first component being fixed for movement with the prosthetic device, the second component receiving the first component in a mating manner and including a ground contact surface, the second component being automatically secured to the first component when the first component moves a predetermined distance relative to the second component in a first direction.

[0235] Clause 43: The attachment system according to Clause 42, wherein the first component includes a first latching mechanism and the second component includes a second latching mechanism.

[0236] Clause 44: The attachment system according to Clause 43, wherein the second latching mechanism engages with the first latching mechanism when the first component moves the predetermined distance relative to the second component along the first direction.

[0237] Clause 45: The attachment system according to Clause 44, wherein the first latching mechanism includes one of a male component and a female component, said one of said male component and said female component being fixed for movement with the first component, and the second latching mechanism includes the other of said male component and said female component, said female component being fixed for movement with the second component and receiving said male component to secure said male component to said female component when the first component moves the predetermined distance in the first direction.

[0238] Clause 46: The attachment system according to Clause 43, wherein the second latching mechanism is arranged on the side of the second component opposite to the ground contact surface.

[0239] Clause 47: An attachment system according to any of the preceding clauses, wherein the second component is slidably attached to the first component.

[0240] Clause 48: An attachment system according to any of the preceding clauses, wherein the first component includes one of a protrusion and a channel and the second component includes the protrusion and the channel receiving the protrusion to guide movement of the first component relative to the second component.

[0241] Clause 49: The attachment system according to Clause 48, wherein the protrusion is received by the channel in a mating manner, and the protrusion is allowed to slide relative to and within the channel to allow the first component to move relative to the second component in the first direction.

[0242] Clause 51: The attachment system according to Clause 49, wherein the protrusion includes a first end and a second end, the first end being attached to one of the first component and the second component, the second end being spaced apart from the first end and received by the channel of the other of the first component and the second component, and the width of the cross-section of the protrusion increasing from the first end to the second end to restrict the removal of the protrusion from the channel.

[0243] Clause 52: An attachment system according to any one of the preceding clauses, wherein the second component includes a buffer layer disposed between the prosthetic device and the ground contact surface.

[0244] Clause 53: The attachment system according to Clause 52, wherein the ground contact surface is formed by the buffer layer.

[0245] Clause 54: The attachment system according to Clause 52, wherein the ground contact surface is formed by an outer bottom layer attached to the buffer layer.

[0246] The foregoing description has been provided for purposes of illustration and description. The foregoing description is not intended to be exhaustive or limiting of this disclosure. Individual elements or features of a particular configuration are generally not limited to that particular configuration, but are interchangeable and can be used in selected configurations where applicable, even if not specifically shown or described. Similarly, changes can be made in many ways. These variations should not be considered as departing from this disclosure, and all such modifications are intended to be included within the scope of this disclosure.

Claims

1. A prosthetic device attachment system, comprising: A first component, the first component including a first surface attached to a ground-facing, protruding surface near the distal end of the prosthetic device, the first component including one of a channel and a protrusion disposed on a side of the first component opposite to the first surface; and A latching mechanism, the latching mechanism including a first portion attached to and extending from the ground-facing surface of the prosthesis device, the latching mechanism being disposed closer to the proximal end of the prosthesis device than the first portion; The second component includes a second surface operable to be attached to a sole structure having a ground contact surface, the second component including another of the channel and the protrusion disposed on a side of the second component opposite to the second surface; The other of the channel and the protrusion is slidably engaged to selectively connect the first component and the second component together; The latching mechanism includes a second part fixed to move together with the second component. When the latching mechanism is in a latched state, the second part engages the first part. When the protrusion moves a predetermined distance into the channel, the latching mechanism automatically moves to the latching state to fix the relative position between the first component and the second component.

2. The prosthetic device attachment system according to claim 1, wherein, The channel and the protrusion cooperate to selectively provide a dovetail joint between the first component and the second component.

3. The prosthetic device attachment system according to claim 1, wherein, The sole structure includes a cushioning layer disposed between the second surface and the ground contact surface.

4. The prosthetic device attachment system according to claim 3, wherein, The ground contact surface is formed by the buffer layer.

5. The prosthetic device attachment system according to claim 3, wherein, The ground contact surface is formed by the outer bottom layer attached to the buffer layer.

6. The prosthetic device attachment system according to claim 1, wherein, The prosthetic device is one of a foot prosthetic device and a leaf-shaped prosthetic device.

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