KR20240068199A - Prosthetic limb assembling device - Google Patents

Abstract

The prosthesis fastening device according to an embodiment of the present disclosure is for fastening to the remaining part of the body, a first fixing means including an upper protrusion protruding vertically from the center of the outer surface toward the upper direction, and coupled to the first fixing means. It has a central support member having a first space of a shape corresponding to the upper protrusion and a second space of a shape corresponding to the central support member, and includes a coupling support means coupled to the central support member, and first irregularities are formed on the outer peripheral surface of the upper protrusion. A portion is formed, and a second uneven portion that can be fastened to the first uneven portion is formed on the inner surface of the first space.

Description

Prosthetic fastener {PROSTHETIC LIMB ASSEMBLING DEVICE}

The present invention relates to a prosthesis fastening device, and more specifically, to a prosthesis fastening device that connects a prosthesis and a stump.

An artificial limb is an artificial limb that is made to fit externally or functionally some defects of the hand or foot, and is manufactured to have the same form and function as a joint. Prosthesis is divided into the upper limb prosthesis, which is referred to as a prosthetic hand, and the lower limb prosthesis, which is referred to as a prosthetic limb. To use a prosthesis, first wear a socket liner on the user's stump, that is, the amputated area, and then connect the prosthesis equipped with the socket to the fastener connection point P1 as shown in FIGS. 1 to 4. . When the user walks with the prosthesis fastened, as shown in Figure 2, the affected side (L1) and the unaffected side (L2) of the remaining limb cross each other while walking, and the shorter the length of the remaining limb, the closer the affected limb is to the front of the hip joint. is bent. Additionally, the longer the amputation site, the more the thigh portion of the hip joint is extended. If the central axis alignment is not precisely performed in the above walking motion, excessive force is repeatedly applied to the amputated part, which not only makes stable walking impossible, but also creates a risk of musculoskeletal injury.

In general, it is difficult to find the connection point between the residual limb and the prosthesis (i.e., artificial knee) for various reasons such as the user's degree of rehabilitation, age, physical condition, and contracture due to thigh muscle stiffness. Additionally, referring to FIG. 3, existing fastening devices only allow adjustment of the front, rear, left, and right inclinations, making it impossible to move the center of gravity according to the inclination. This soon causes leaning in one direction, causing frequent injuries to the remaining limbs and causing significant obstacles to comfortable walking. Therefore, in order to solve this problem, as shown in FIG. 2, there is a need for a prosthesis fastening device that can match the user's optimal walking pattern by aligning the walking width and moving the central axis through the user's walking test.

Through the present disclosure, a prosthetic fastening device is provided that not only allows easy adjustment of the central axis separation distance, but also allows for precise central axis alignment with excellent fastening force and support while being easy to fasten and dismantle.

Through the present disclosure, a structure for preventing rotation of the prosthesis is provided.

Through the present disclosure, a prosthetic fastening device is provided that can make the prosthesis fastening device lighter and more compact, and can achieve optimal central axis alignment required by pedestrians through a walking test.

The prosthesis fastening device according to an embodiment of the present disclosure is for fastening to the remainder of the body, a first fixing means including an upper protrusion protruding vertically from the center of the outer surface toward the upper direction, and coupled to the first fixing means. It has a central support member having a first space of a shape corresponding to the upper protrusion and a second space of a shape corresponding to the central support member, and includes a coupling support means coupled to the central support member, and first irregularities are formed on the outer peripheral surface of the upper protrusion. A portion is formed, and a second uneven portion that can be fastened to the first uneven portion is formed on the inner surface of the first space.

According to one embodiment, a third space with a screw thread is formed on the inner surface of the upper protrusion, and a screw is inserted into the third space and engages with the screw thread, thereby fixing the central supporter to the first fixing means.

According to one embodiment, a groove is formed on the outer surface of the first fixing means, a fourth space is formed including one or more spaces through which a screw can be inserted into the central supporter, and the screw is coupled to the fourth space. and the end of the combined screw is inserted into the groove.

According to one embodiment, the central axis of the coupling support means is spaced apart from the central axis of the second space by a predetermined distance.

According to one embodiment, the first fixing means is marked with a scale indicating the rotation angle of the coupling with the central support member, and the central support member includes a guide pin for adjusting the rotation angle.

According to various embodiments of the present disclosure, stable walking can be enabled by precisely performing the necessary central axis alignment according to the degree of eccentricity.

According to various embodiments of the present disclosure, the present invention has the effect of reducing the cost and time of rework by aligning the central axis so that the artificial knee can move smoothly through a walking test.

According to various embodiments of the present disclosure, the first fixing means and the central support member are coupled to each other by engaging each of the uneven portions, so that the central support member is firmly fixed and rotation of the central support member can be prevented.

The effects of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Figure 1 shows the position of the fastening device fastened to the remaining leg of the femoral prosthesis knee.
Figure 2 shows the movement of the amputated part according to the walking state.
Figure 3 shows the correction process according to the depression angle and the center of gravity movement state according to the construction angle.
Figure 4 is a side view showing a state of fastening the femoral prosthesis to the remaining limb according to the prior art.
Figure 5 shows an exploded view of the prosthesis fastening device of the present invention.
Figure 6 shows in detail the structure of the central support body of the present invention.
Figure 7 is a diagram showing the first fixing means and the central support body being combined according to an embodiment of the present invention.
Figure 8 shows the structure of the coupling support means of the present invention in detail.
Figure 9 shows the coupled state of the coupling support means and the first fixing means of the present invention.
Figure 10 shows the state of adjusting the spacing of the cut grooves using the tightening means of the coupling support means of the present invention.
Figure 11 is a coupling state diagram showing the structure of a prosthesis fastening device according to an embodiment of the present invention.

Hereinafter, specific details for implementing the present disclosure will be described in detail with reference to the attached drawings. However, in the following description, detailed descriptions of well-known functions or configurations will be omitted if there is a risk of unnecessarily obscuring the gist of the present disclosure.

In the accompanying drawings, identical or corresponding components are given the same reference numerals. Additionally, in the description of the following embodiments, overlapping descriptions of identical or corresponding components may be omitted. However, even if descriptions of components are omitted, it is not intended that such components are not included in any embodiment.

Terms used in the present disclosure will be briefly described, and the disclosed embodiments will be described in detail. The terms used in this specification are general terms that are currently widely used as much as possible while considering the function in the present disclosure, but this may vary depending on the intention or precedent of a technician working in the related field, the emergence of new technology, etc. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the relevant invention. Accordingly, the terms used in this disclosure should be defined based on the meaning of the term and the overall content of the present disclosure, rather than simply the name of the term.

In this disclosure, singular expressions include plural expressions, unless the context clearly specifies the singular. Additionally, plural expressions include singular expressions, unless the context clearly specifies plural expressions.

In the present disclosure, when a part includes a certain component, this means that other components may be further included rather than excluding other components unless specifically stated to the contrary.

In the present disclosure, the upper part of the drawing may be referred to as the “top” or “upper side” of the configuration shown in the drawing, and the lower part may be referred to as the “lower” or “lower side”. Additionally, in the drawings, the remaining portion between the upper and lower parts of the structure shown or excluding the upper and lower parts may be referred to as a “side” or “side.” Relative terms such as “top”, “upper side”, etc. may be used to describe relationships between components shown in the drawings, and the present disclosure is not limited by such terms.

In the present disclosure, the direction toward the internal space of a structure may be referred to as “inside,” and the direction protruding into the open external space may be referred to as “outside.” Relative terms such as “inside”, “outside”, etc. may be used to describe relationships between components shown in the drawings, and the present disclosure is not limited by such terms.

In this disclosure, description of “A and/or B” means A, or B, or A and B.

In the present disclosure, when a part is said to be connected to another part, this includes not only the case where it is directly connected, but also the case where it is connected with another component in between.

Advantages and features of the disclosed embodiments and methods for achieving them will become clear by referring to the embodiments described below in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the present disclosure is complete and that the present disclosure does not convey the scope of the invention to those skilled in the art. It is provided only for complete information.

Hereinafter, the description will be made specifically in the field of prosthetics where the need for alignment of the central axis to receive load is high, but of course the idea of the present invention can be applied to other fields of prosthesis. Here, the prosthetic leg is detachable from a fixture fixed to the part consisting of the upper leg, knee, lower leg, and foot, or the stump of the part consisting of the lower leg and foot (this refers to the "cut and remaining part of the foot"). It can be attached. The fixture is generally a socket-type fixture that is fixed in a shape that surrounds the remaining limb, but it also includes a support rod (tube) to adjust the length of the amputation site and the prosthetic leg that does not match, or is a mechanical fixture used by patients with amputations above the knee. It may include a knee or a structure connected to the patient's skeleton.

Figure 5 shows an exploded view of a prosthesis fastening device according to an embodiment of the present invention. Referring to Figure 5, the prosthesis fastening device includes a second fixing means 110 for fixing to one of the stump of the body or the prosthesis, and a first fixing means to be fixed to the other one of the stump of the body or the prosthesis. (170), connected to the central support member 120 and the second fixing means 110 coupled to the first fixing means 170, and forming a second space in which the central support member 120 is located, and the central support member 120 ) may include a coupling support means 140 that couples the rest of the body and the prosthesis in a state rotated at a predetermined angle about the central axis in the direction in which the prosthesis is fastened. At this time, the central axis (C1) of the second fixing means (110) may be formed to be spaced a predetermined distance from the central axis (C2) of the coupling support means (140). Additionally, the central axis C2 of the coupling support means 140 may be spaced a predetermined distance from the central axis C3 of the second space where the central support member 120 is located. Here, the separation distance between each central axis may be the same or different.

In Figure 5, an external thread 122 for coupling with the coupling support means 140 is shown to be formed on the outer peripheral surface of the central support member 120, but the present invention is not limited thereto. For example, an uneven portion configured to couple with the coupling support means 140 is formed on the outer surface of the central support member 120, and an uneven portion formed on the outer surface of the central support member 120 is formed on the inner surface of the coupling support means 140. A concavo-convex portion that can be combined with may be formed.

The first fixing means 170 may include an upper protrusion 171 that protrudes vertically upward from the center of the outer surface. A first uneven portion 171a may be formed on at least a portion of the outer peripheral surface of the upper protrusion 171. The first uneven portion 171a is not limited to the sawtooth shape as shown in FIG. 5, and may be formed in any shape to prevent rotation of the central support member 120.

After the first fixing means 170 and the central support member 120 are fixed, the fixing member 150 is inserted into the third space 173 to prevent the central support member 120 from being separated from the first fixing means 170. It can be prevented. For example, the fixing member 150 can fix the central support body 120 by engaging the screw threads on the inner surface of the third space 173.

According to the described structure, the upper protrusion 171, which is fixed to the other of the body's stump or the prosthesis and formed on the first fixing means 170, has a protruding structure, so that the prosthesis fastening device can be fastened and dismantled. It has an easy-to-use structure. In addition, even if foreign substances enter the joint area between the first fixing means 170 and the central support member 120, the removal of the foreign substances is very easy by separating the central support members 120, and cleaning and management are convenient.

Figure 6 shows in detail the structure of the central support body 120 of the present invention. Referring to FIG. 6, the central support body 120 may have a C-shaped ring shape with a cut groove (CH), and the central support body 120 has an upper protrusion 171 corresponding to the first fixing means 170. A first space 121 of the form may be formed.

A second uneven part 121a may be formed on the inner surface of the first space 121 to correspond to and engage with the first uneven part 171a of the upper protrusion shown in FIG. 5. By combining the two uneven parts, a rotation problem may occur when the user uses the prosthesis for a long time. That is, the central support body 120 is firmly fixed and rotation of the central support body 120 can be prevented.

Additionally, the central axis C3 of the central support body 120 may be spaced apart from the central axis C4 of the first space 121 by a predetermined distance. By using spaced-apart central axes, it is possible to adjust the central axis optimized for the user's center of gravity.

Figure 7 is a diagram showing the first fixing means 170 and the central support member 120 being combined according to an embodiment of the present invention.

As shown in (a) of FIG. 7, a third space 173 is formed in the upper protrusion 171 of the first fixing means 170, and one or more space 173 is disposed in a concentric circle around the upper protrusion 171. A groove 174 may be formed. At this time, a screw thread may be formed on the inner surface of the third space 173.

As shown in (b) of FIG. 7, the first fixing means 170 and the central support member 120 may be combined by engaging the first uneven portion 171a and the second uneven portion 121a, respectively. Thereafter, the screw may be coupled to the fourth space 123 formed in the central support body 120, and the end of the screw may be inserted into the groove 174. Through this configuration, the central support body 120 is firmly fixed and rotation of the central support body 120 can be prevented.

Additionally, the fixing member is inserted into the third space 173 to prevent the central support member 120 from being separated from the first fixing means 170. For example, the central support body 120 can be fixed by combining a screw with a screw thread on the inner surface of the third space 173.

Referring to (b) of FIG. 7, the first fixing means 170 according to the embodiment is marked with a scale 172 indicating a specific dimension of the center axis spacing according to the coupling angle with the center supporter 120, and the center The body 120 may further include a guide pin (A) for angle adjustment that protrudes in a horizontal direction outward from the lower edge portion.

Figure 8 shows the structure of the coupling support means 140 of the present invention in detail. Figure 8 (a) is a plan view showing the structure of the second fixing means 110 in detail, and Figure 8 (b) shows the structure of the coupling support means 140 integrally connected to the second fixing means 110. This is a detailed bottom view.

Referring to (a) of FIG. 8, a space 101 may be formed in the center of the second fixing means 110 to be coupled to one of the stump of the body or the prosthesis. The second fixation means 110 is a pressurizing device that firmly fixes the combined state of the first fixation means and the rest of the body or will by strongly pressing the remaining part of the body or will when the remaining part of the body or will is accommodated in the space 101. More means can be provided. The pressing means includes a plurality of penetrating holes 102 formed on the side of the second fixing means 110 and communicating with the space of the second fixing means 110, and pressurizing bolts coupled to each fitting hole. 103), and the fitting hole and the pressurizing bolt may be screwed together. According to the described structure, when the pressing bolt 103 is coupled to the fitting hole 102, the end of the pressing bolt 103 strongly exerts the force or will of the body accommodated in the space of the second fixing means 110. There can be pressure.

Referring to (b) of FIG. 8, on the inner surface of the second space 144 where the central supporter formed in the coupling support means 140 is located, the external thread of the central supporter 120 shown in (b) of FIG. An internal thread (144a) capable of screwing with (122) may be formed. In another embodiment, when the uneven portion is formed on the outside of the central support body 120, the uneven portion that can be coupled to correspond to the uneven portion on the outside of the central support body 120 may be formed on the inner surface of the second space 144. . Additionally, the coupling support means 140 may have a C-shaped ring shape with a cut groove (CH) formed thereon.

Figure 9 shows the coupled state of the coupling support means 140 and the second fixing means 110 of the present invention. Referring to Figures 8 and 9, one side of the coupling support means 140 is formed with a coupling portion (S2) that is fixedly coupled with the upper side in close contact with the lower surface of the second fixing means 110, and the coupling support means The other side of the means 140 may be formed with a free end S1 spaced apart from the second fixing means 110 by a predetermined distance.

The free end (S1) of the coupling support means 140 shown in FIGS. 8 and 9 may be provided with a tightening means that can simultaneously adjust the spacing between the cut groove and the cut groove (CH) of the central support member 120. there is. To explain this in more detail, the coupling support means is formed in the second space 144 formed in the coupling support means 140 as the area where the free end (S1) is formed is formed larger than the area where the coupling portion (S2) is formed. When the central support member is provided, the gap between the incision grooves (CH) can be tightened more effectively using a tightening means.

According to the illustrated embodiment, the tightening means may include a pair of screw guide parts 141 and 142 formed through both ends of the coupling support means 140, and a tightening screw 143 screwed to the screw guide parts. You can. However, the fastening means is not limited to the structure shown and can be replaced with other known fastening means.

The assembling process of the prosthesis fastening device according to the structure shown in FIGS. 5 to 8 will be described as follows. With the upper protrusion 171 inserted into the first space 121 of the central supporter 120, screw coupling is performed and the central supporter 120 is rotated at a predetermined angle. Next, with the central support member 120 positioned in the second space of the coupling support means 140, the coupling support means and the central support member are screwed together, and the coupling support means 140 is rotated at a predetermined angle. Select and tighten the tightening means of the coupling support means 140 shown in FIG. 8 to firmly couple the coupling support means 140 and the central support member 120.

Figure 10 shows the state of adjusting the spacing of the cutting groove (CH) using the tightening means of the coupling support means 140 of the present invention. Referring to FIG. 10, the central support body 120 is positioned in the second space 144 formed in the coupling support means 140, and the tightening screw 143 is screwed to the pair of screw guide parts 141 and 142. By rotating, the spacing (W1) of the cut grooves (CH) formed in the coupling support means 140 and the spacing (W2) of the cut grooves (CH) formed in the central support member 120 can be adjusted at the same time. Therefore, the prosthesis fastening device of the present invention has a spacing (W1) of the cut groove (CH) formed in the coupling support means (140) and a gap (W1) of the cut groove (CH) formed in the central support member (120) to adjust the central axis separation distance for aligning the central axis during use. Since there is no need to separately adjust the spacing (W2) of the cutting grooves (CH), it is not only very easy to use, but also maintains a firm connection.

Figure 11 is a coupling state diagram showing the structure of a prosthesis fastening device according to an embodiment of the present invention. The prosthesis fastening device may be configured by combining a first fixing means 170 coupled to the rest of the body, a second fixing means 110 coupled to the prosthesis, and a coupling support means 140.

A scale 172 indicating the rotation angle of the first fixing means 170 and the central support member 120 is displayed. The central support body 120 includes a guide pin (A) for adjusting the rotation angle. The user of the prosthesis fastening device can easily determine the specific dimensions of the central axis spacing according to the coupling angle with the central support member 120 through the angle adjustment guide pin (A) and scale 172 even after the fixing means and the combined support means are combined. there is.

Although the present invention has been described in detail through specific examples, this is for the purpose of explaining the present invention in detail, and the present invention is not limited thereto, and can be understood by those skilled in the art within the technical spirit of the present invention. It is clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be made clear by the appended claims.

101: space 102: insertion hole
103: Bolt for pressurization 110: Second fixing means
120: Central district 121: First space
121a: second uneven portion 122: external thread
123: Fourth space 140: Combined support means
141, 142: screw guide part
143: Tightening screw 144: Second space
144a: internal thread 150: fixing member
170: first fixing means 171: upper protrusion
171a: first uneven portion 172: graduation
173: Third space 174: Home

Claims (5)

A first fixing means (170) for fastening to the rest of the body, including an upper protrusion (171) that protrudes vertically upward from the center of the outer surface;
A central support body (120) coupled to the first fixing means (170) and having a first space (121) of a shape corresponding to the upper protrusion (171); and
A coupling support means (140) having a second space (144) of a shape corresponding to the central support body (120) and coupled to the central support body (120).
Including,
A first uneven portion 171a is formed on the outer peripheral surface of the upper protrusion 171,
A prosthesis fastening device in which a second concave-convex portion (121a) capable of being fastened to the first concave-convex portion (171a) is formed on the inner surface of the first space (121).
According to paragraph 1,
A third space 173 having a screw thread formed on the inner surface is formed in the upper protrusion 171,
A prosthesis fastening device in which the central support body (120) is fixed to the first fixing means (170) by inserting a screw into the third space (173) and engaging the screw thread.
According to paragraph 1,
A groove 174 is formed on the outer surface of the first fixing means 170,
A fourth space 123 is formed in the central support body 120, including one or more spaces through which a screw can be inserted and penetrated,
A prosthesis fastening device in which a screw is coupled to the fourth space, and an end of the coupled screw is inserted into the groove (174).
According to paragraph 1,
A prosthesis fastening device in which the central axis (C2) of the coupling support means (140) is spaced a predetermined distance from the central axis (C3) of the second space.
According to paragraph 1,
The first fixing means 170 is marked with a scale 172 indicating the rotation angle of the coupling with the central supporter 120,
The central support body 120 is a prosthesis fastening device including a guide pin (A) for adjusting the rotation angle.

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