Acromioclavicular joint reconstruction device and system

Abstract

The present invention relates to an acromioclavicular joint reconstruction device and system, which includes a top fixing unit, a first bottom fixing unit, a second bottom fixing unit, a first folding fixing unit, a second folding fixing unit, a side fixing unit, a first fastening unit, and a second fastening unit. The device has the advantages of reducing the side opening at the affected area and the impact on other soft tissues by implanting the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit, and the second folding fixing unit; connecting the top fixing unit and the first bottom fixing unit by the first fastening unit, thereby reducing the problem of dislocation caused by displacement of the top fixing unit; forming a stable triangular structure by the side fixing unit, the top fixing unit, the first bottom fixing unit, and the second bottom fixing unit, thereby preventing displacement of each fixing unit; and simultaneously repairing the acromioclavicular ligament and the coracoclavicular ligament, thereby preventing the problem of the acromioclavicular joint being unable to be anatomically reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of orthopedic medical devices, and in particular to an acromioclavicular joint reconstruction device and system. Background Art

[0002] AC joint dislocation is a common shoulder injury seen clinically. Generally speaking, the mechanism of AC joint dislocation is that external force acts on the adducted shoulder, causing the acromion to shift inward and downward, leading to varying degrees of tearing of the AC joint capsule and adjacent ligaments (primarily the AC and coracoclavicular ligaments). This in turn causes the AC joint to lose stability, resulting in pain and limited mobility.

[0003] A common treatment method is hook fixation. This technique involves inserting one end of a clavicle hook plate into the acromion and pressing down on the clavicle to stabilize the acromioclavicular joint, thereby treating acromioclavicular dislocation. However, hook fixation is highly invasive and can easily cause shoulder pain. In severe cases, it can lead to complications such as acromion fractures.

[0004] In addition, there are wire rivets for treating acromioclavicular joint dislocation, but for some people with osteoporosis, the rivets are prone to loosening and displacement, resulting in fixation failure, and a secondary surgery is required to fix them, which prolongs the treatment time.

[0005] In addition, reconstruction of the coracoclavicular ligament with a loop plate for the treatment of acromioclavicular joint dislocation is a minimally invasive treatment method. However, repairing only the coracoclavicular ligament without reconstructing the acromioclavicular ligament will cause the clavicle to move forward in the sagittal plane, failing to achieve anatomical reconstruction of the acromioclavicular joint.

[0006] Currently, no effective solutions have been proposed to address the problems of related technologies, such as large trauma, multiple complications, unsuitability for osteoporosis patients, and inability to anatomically reconstruct the acromioclavicular joint. Summary of the Invention

[0007] The purpose of the present invention is to provide an acromioclavicular joint reconstruction device and system to address the deficiencies in the existing technology, so as to solve the problems existing in the related technology, such as large trauma, multiple complications, unsuitability for osteoporosis patients, and inability to anatomically reconstruct the acromioclavicular joint.

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] In a first aspect, the present invention provides an acromioclavicular joint reconstruction device, comprising:

[0010] A top fixing unit, the top fixing unit being arranged on the upper part of the affected bone;

[0011] a first bottom fixing unit, which is disposed at a lower portion of the affected bone and below the top fixing unit;

[0012] a second bottom fixing unit, which is disposed below the first bottom fixing unit and is detachably connected to the first bottom fixing unit;

[0013] a first folding fixing unit, wherein a first end of the first folding fixing unit is rotatably connected to a side portion of the first bottom fixing unit;

[0014] a second folding and fixing unit, wherein a first end of the second folding and fixing unit is rotatably connected to a side portion of the second bottom fixing unit, and a second end of the second folding and fixing unit is rotatably connected to a middle portion of the first folding and fixing unit or a middle portion of the second folding and fixing unit is rotatably connected to the second end of the first folding and fixing unit;

[0015] A side fixing unit, the side fixing unit being arranged on the side of the affected bone;

[0016] a first fastening unit, wherein the first fastening unit is connected to the top fixing unit and the first bottom fixing unit respectively;

[0017] A second fastening unit is connected to the second bottom fixing unit and the side fixing unit respectively.

[0018] In some embodiments, the top fixing unit includes:

[0019] A top fixing element, the top fixing element being arranged on the upper portion of the affected bone;

[0020] A first connecting element is provided through the upper and lower surfaces of the top fixing element and is connected to the first fastening unit.

[0021] In some embodiments, the top fixing unit further comprises:

[0022] The first limiting element is arranged on the top fixing element and protrudes from the bottom of the top fixing element, and is used to fix the top fixing element to the upper part of the affected bone.

[0023] In some embodiments, the first bottom fixing unit includes:

[0024] a first bottom fixing element, the first bottom fixing element being disposed at a lower portion of the affected bone and being located below the top fixing unit;

[0025] a second connecting element, the second connecting element being disposed on top of the first bottom fixing element and connected to the first fastening unit;

[0026] a first locking element, the first locking element being arranged at the bottom and / or side of the first bottom fixing element and being locked with the second bottom fixing unit;

[0027] A first rotating element is provided on a side of the first bottom fixing element and is rotatably connected to a first end of the first folding fixing unit.

[0028] In some embodiments, the second bottom fixing unit includes:

[0029] a second bottom fixing element, the second bottom fixing element being disposed at a lower portion of the first bottom fixing unit;

[0030] a third connecting element, the third connecting element being disposed on the top and / or side of the second bottom fixing element and connected to the second fastening unit;

[0031] a second locking element, the second locking element being arranged on the top and / or the side of the second bottom fixing element and being locked with the first bottom fixing unit;

[0032] The second rotating element is arranged on the side of the second bottom fixing element and is rotatably connected to the first end of the second folding and fixing unit.

[0033] In some embodiments, the first folding and fixing unit includes:

[0034] a first folding fixing element, the first folding fixing element being rotatably disposed on a side of the first bottom fixing unit;

[0035] a third rotating element, the third rotating element being disposed at the first end of the first folding fixing element and being rotatably connected to the first bottom fixing unit;

[0036] A fourth rotating element is provided at the middle portion or the second end of the first folding and fixing element and is rotatably connected to the second folding and fixing unit.

[0037] In some embodiments, the first folding and fixing unit further includes:

[0038] A second limiting element is provided at the second end of the first folding fixing element or the second end of the second folding fixing element, and is used to fix the second end of the first folding fixing element to the affected bone when the second end of the first folding fixing element is against the affected bone.

[0039] In some embodiments, the second folding and fixing unit includes:

[0040] a second folding and fixing element, the second folding and fixing element being rotatably disposed on a side of the second bottom fixing unit;

[0041] a fifth rotating element, the fifth rotating element being disposed at the first end of the second folding fixing element and being rotatably connected to the second bottom fixing unit;

[0042] A sixth rotating element is provided at the middle portion or the second end of the second folding and fixing element and is rotatably connected to the first folding and fixing unit.

[0043] In some embodiments, the second folding and fixing unit further includes:

[0044] A third limiting element is provided at the second end of the second folding fixing element, and is used to fix the second end of the second folding fixing element to the affected bone when the second end of the second folding fixing element is against the affected bone.

[0045] In some embodiments, the side fixing unit includes:

[0046] a lateral fixation element, the lateral fixation element being arranged on the side of the affected bone;

[0047] A fourth connecting element is provided on the side fixing element and is connected to the second fastening unit.

[0048] In some embodiments, the side fixing unit further comprises:

[0049] The fourth limiting element is arranged on the side fixing element and protrudes from the bottom of the side fixing element, and is used to fix the side fixing element to the side of the affected bone.

[0050] In some embodiments, further comprising:

[0051] A locking unit is connected to the top fixing unit and / or the side fixing unit, and is used to lock the top fixing unit and / or the side fixing unit with the skeleton.

[0052] In some embodiments, the top fixing unit further comprises:

[0053] A first locking element is provided on the top fixing unit and is detachably connected to the locking unit.

[0054] In some embodiments, the locking unit includes:

[0055] A second locking element is detachably connected to the top fixing unit.

[0056] In some embodiments, the side fixing unit further comprises:

[0057] A third locking element is provided on the side fixing unit and is detachably connected to the locking unit.

[0058] In some embodiments, the locking unit includes:

[0059] A fourth locking element is detachably connected to the side fixing unit.

[0060] In a second aspect, the present invention provides an acromioclavicular joint reconstruction system, comprising:

[0061] The acromioclavicular joint reconstruction device as described in the first aspect;

[0062] A guiding device is used to guide the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit, and the second folding fixing unit of the acromioclavicular joint reconstruction device to be placed at the lower part of the affected bone.

[0063] In some embodiments, the guiding device includes:

[0064] a guiding unit, wherein the guiding unit is sleeved with the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit, and the second folding fixing unit;

[0065] An auxiliary unit is slidably connected to the guide unit, and a first end of the auxiliary unit abuts against a top end of the first bottom fixing unit.

[0066] In some embodiments, the guiding unit includes:

[0067] a first guiding element, wherein the first guiding element is sleeved on the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit, and the second folding fixing unit;

[0068] A first sliding element is provided on an inner edge surface of the first guiding element and is slidably connected to the auxiliary unit.

[0069] In some embodiments, the auxiliary unit includes:

[0070] a second guiding element, the second guiding element being sleeved inside the guiding unit and sleeved on the first fastening unit;

[0071] A second sliding element is provided on an outer edge surface of the second guide element and is slidably connected to the guide unit.

[0072] In some embodiments, the first bottom fixing unit further includes:

[0073] A fifth limiting element is provided on the top of the first bottom fixing unit and is detachably connected to the auxiliary unit.

[0074] In some embodiments, the auxiliary unit further comprises:

[0075] A sixth limiting element is provided at the bottom of the second guiding element and is detachably connected to the first bottom fixing unit.

[0076] The present invention adopts the above technical solution, which has the following technical effects compared with the prior art:

[0077] A device and system for reconstructing acromioclavicular joint according to the present invention reduces the side opening at the affected area by implanting a first bottom fixing unit, a second bottom fixing unit, a first folding fixing unit, and a second folding fixing unit, thereby reducing the impact on other soft tissues; utilizes a first fastening unit to connect the top fixing unit and the first bottom fixing unit, thereby reducing the dislocation problem caused by displacement of the top fixing unit; utilizes a second fastening unit to connect the side fixing unit and the second bottom fixing unit, thereby reducing the dislocation problem caused by displacement; utilizes the side fixing unit, the top fixing unit, the first bottom fixing unit, and the second bottom fixing unit to form a stable triangular structure, thereby avoiding displacement of each fixing unit; and simultaneously repairs the acromioclavicular ligament and the coracoclavicular ligament, thereby avoiding the problem that the acromioclavicular joint cannot be anatomically reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0078] Figure 1a is a schematic diagram of an initial state of an acromioclavicular joint reconstruction device according to an embodiment of the present invention;

[0079] Figure 1b Schematic diagram of the acromioclavicular joint reconstruction device in a folded state according to an embodiment of the present invention (I)

[0080] Figure 2 is a schematic diagram of a top fixing unit according to an embodiment of the present invention (1);

[0081] Figure 3 is a schematic diagram of a first bottom fixing unit according to an embodiment of the present invention (1);

[0082] Figure 4 is a schematic diagram of a second bottom fixing unit according to an embodiment of the present invention;

[0083] Figures 5a-5b is a schematic diagram of a first folding and fixing unit according to an embodiment of the present invention;

[0084] Figures 6a-6b is a schematic diagram of a second folding and fixing unit according to an embodiment of the present invention;

[0085] Figure 7 is a schematic diagram of a side fixing unit according to an embodiment of the present invention (1);

[0086] Figure 8 is a schematic diagram of a folded state of the acromioclavicular joint reconstruction device according to an embodiment of the present invention (II);

[0087] Figure 9 is a schematic diagram of a top fixing unit according to an embodiment of the present invention (II);

[0088] Figure 10 is a schematic diagram of a locking unit according to an embodiment of the present invention (1);

[0089] Figure 11 3 is a schematic diagram of a folded state of the acromioclavicular joint reconstruction device according to an embodiment of the present invention;

[0090] Figure 12 is a schematic diagram of a side fixing unit according to an embodiment of the present invention (II);

[0091] Figure 13 is a schematic diagram of a locking unit according to an embodiment of the present invention (II);

[0092] Figure 14 is a schematic diagram of an acromioclavicular joint reconstruction system according to an embodiment of the present invention;

[0093] Figure 15 is a schematic diagram of a guiding device according to an embodiment of the present invention;

[0094] Figure 16 is a schematic diagram of a guiding unit according to an embodiment of the present invention;

[0095] Figure 17 is a schematic diagram of an auxiliary unit according to an embodiment of the present invention (1);

[0096] Figure 18 is a schematic diagram (2) of a first bottom fixing unit according to an embodiment of the present invention;

[0097] Figure 19 2 is a schematic diagram of an auxiliary unit according to an embodiment of the present invention.

[0098] The accompanying drawings are numerals 100 , acromioclavicular joint reconstruction device;

[0099] 110. Top fixing unit; 111. Top fixing element; 112. First connecting element; 113. First limiting element; 114. First locking element;

[0100] 120, first bottom fixing unit; 121, first bottom fixing element; 122, second connecting element; 123, first locking element; 124, first rotating element; 125, fifth limiting element;

[0101] 130, second bottom fixing unit; 131, second bottom fixing element; 132, third connecting element; 133, second locking element; 134, second rotating element;

[0102] 140, first folding and fixing unit; 141, first folding and fixing element; 142, third rotating element; 143, fourth rotating element; 144, second limiting element;

[0103] 150, second folding and fixing unit; 151, second folding and fixing element; 152, fifth rotating element; 153, sixth rotating element; 154, third limiting element;

[0104] 160, side fixing unit; 161, side fixing element; 162, fourth connecting element; 163, fourth limiting element; 164, third locking element;

[0105] 170. First fastening unit;

[0106] 180. Second fastening unit;

[0107] 190, locking unit; 191, second locking element; 192, fourth locking element;

[0108] 200, guiding device;

[0109] 210, guide unit; 211, first guide element; 212, first sliding element;

[0110] 220 , auxiliary unit; 221 , second guiding element; 222 , second sliding element; 223 , sixth limiting element. DETAILED DESCRIPTION

[0111] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0112] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0113] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0114] Example 1

[0115] This embodiment relates to the acromioclavicular joint reconstruction device of the present invention.

[0116] An exemplary embodiment of the present invention is as follows Figures 1a and 1b As shown, an acromioclavicular joint reconstruction device 100 includes a top fixing unit 110, a first bottom fixing unit 120, a second bottom fixing unit 130, a first folding fixing unit 140, a second folding fixing unit 150, a side fixing unit 160, a first fastening unit 170 and a second fastening unit 180. Among them, the top fixing unit 110 is arranged at the upper part of the affected bone; the first bottom fixing unit 120 is arranged at the lower part of the affected bone and is located below the top fixing unit 110; the second bottom fixing unit 130 is arranged at the lower part of the first bottom fixing unit 120 and is detachably connected to the first bottom fixing unit 120; the first end of the first folding fixing unit 140 is rotatably connected to the side of the first bottom fixing unit 120; the first end of the second folding fixing unit 150 is rotatably connected to the side of the second bottom fixing unit 130, and the second end of the second folding fixing unit 150 is rotatably connected to the middle of the first folding fixing unit 140 or the middle of the second folding fixing unit 150 is rotatably connected to the second end of the first folding fixing unit 140; the side fixing unit 160 is arranged at the side of the affected bone; the first fastening unit 170 is respectively connected to the top fixing unit 110 and the first bottom fixing unit 120; the second fastening unit 180 is respectively connected to the second bottom fixing unit 130 and the side fixing unit 160.

[0117] Specifically, the top fixing unit 110, the first bottom fixing unit 120 and the second bottom fixing unit 130 are respectively arranged on the upper and lower sides of the affected bone, and the side fixing unit 160 is arranged on the side of the affected bone to form a stable triangular structure to prevent displacement of each fixing unit; the top fixing unit 110 and the first bottom fixing unit 120 are fastened together by the first fastening unit 170, the first bottom fixing unit 120 and the second bottom fixing unit 130 are locked together, and the second bottom fixing unit 130 and the side fixing unit 160 are fastened together by the second fastening unit 180, so that the acromioclavicular joint reconstruction device 100 reaches a stable state.

[0118] The first folding and fixing unit 140 and the second folding and fixing unit 150 respectively have an initial state and a folded state. When the first folding and fixing unit 140 and the second folding and fixing unit 150 are both in the initial state, the first folding and fixing unit 140 and the second folding and fixing unit 150 are both arranged vertically. When the first folding and fixing unit 140 and the second folding and fixing unit 150 are both in the folded state, the first folding and fixing unit 140 and the second folding and fixing unit 150 rotate relative to each other, and the first folding and fixing unit 140 and the second folding and fixing unit 150 are both arranged horizontally, and the second end of the first folding and fixing unit 140 or the second end of the second folding and fixing unit 150 abuts the lower part of the affected bone.

[0119] like Figure 2 As shown, the top fixing unit 110 includes a top fixing element 111 and a first connecting element 112. The top fixing element 111 is disposed on the upper portion of the affected bone; the first connecting element 112 is disposed through the upper and lower surfaces of the top fixing element 111 and is connected to the first fastening unit 170.

[0120] The top fixing element 111 is a top fixing steel plate, and its shape includes but is not limited to a circle, a rounded rectangle, a waisted circle, etc., and has a certain curvature so that it can fit the affected bone.

[0121] In some embodiments, the top fixing element 111 is made of metal materials, including but not limited to stainless steel, cobalt alloy, titanium alloy, etc.

[0122] There is at least one first connecting element 112 , which is distributed on the top fixing element 111 .

[0123] In some embodiments, when there is only one first connecting element 112 , the first connecting element 112 is disposed in the middle of the top fixing element 111 .

[0124] In some embodiments, when there are multiple first connecting elements 112 , the multiple first connecting elements 112 are spaced apart along the length direction and / or width direction of the top fixing element 111 .

[0125] In some embodiments, when there are multiple first connecting elements 112 , the multiple first connecting elements 112 are arranged in a circumferentially symmetrical manner.

[0126] In some embodiments, the cross section of the first connecting element 112 is circular, fan-shaped, or petal-shaped.

[0127] In some embodiments, the first connecting element 112 is a first through hole.

[0128] Furthermore, the top fixing unit 110 further includes a first limiting element 113. The first limiting element 113 is provided on the top fixing element 111 and protrudes from the bottom of the top fixing element 111, and is used to fix the top fixing element 111 to the upper part of the affected bone.

[0129] There is at least one first limiting element 113 , which is distributed at the bottom of the top fixing element 111 .

[0130] In some embodiments, when there is only one first limiting element 113 , the first limiting element 113 is disposed in the middle of the top fixing element 111 .

[0131] In some embodiments, when there are multiple first limiting elements 113 , the multiple first limiting elements 113 are spaced apart along the length direction and / or width direction of the top fixing element 111 .

[0132] In some embodiments, when there are multiple first limiting elements 113 , the multiple first limiting elements 113 are arranged in a surrounding symmetrical manner.

[0133] In some embodiments, there is one first connecting element 112 and at least two first limiting elements 113. The two first limiting elements 113 are symmetrically arranged on both sides of the first connecting element 112 with the first connecting element 112 as the center.

[0134] In some embodiments, there are at least two first connecting elements 112 , which are arranged in a symmetrical manner around the first connecting elements 112 , and there is one first limiting element 113 , which is arranged at the symmetrical center of the first connecting elements 112 .

[0135] In some embodiments, there are at least two first connecting elements 112 arranged symmetrically around the first connecting elements 112, and at least two first limiting elements 113. One first limiting element 113 is arranged at the symmetrical center of a plurality of first connecting elements 112, and the remaining first limiting elements 113 are arranged on the outside of the corresponding first connecting elements 112.

[0136] In some embodiments, there are at least two first connecting elements 112, spaced apart along the length and / or width of the top fixing element 111. There are at least two first limiting elements 113. At least one first limiting element 113 is disposed outside the outermost first connecting element 112. Furthermore, a first limiting element 113 is disposed between two adjacent first connecting elements 112.

[0137] In some embodiments, the first limiting element 113 is a first limiting protrusion, wherein the outer edge surface of the first limiting element 113 is a smooth surface or a rough surface, for example, the outer edge surface of the first limiting element 113 is a threaded surface.

[0138] In some embodiments, the radial dimension of the first limiting element 113 decreases from its first end to its second end, wherein the first end refers to the end of the first limiting element 113 connected to the top fixing element 111, and the second end refers to the end of the first limiting element 113 away from the top fixing element 111.

[0139] In some embodiments, the first limiting element 113 includes a first protruding member and a second protruding member, wherein a first end of the first protruding member is connected to the top fixing element 111 ; and a first end of the second protruding member is connected to a second end of the first protruding member.

[0140] The radial dimension of the first protrusion remains unchanged; the radial dimension of the second protrusion decreases from the first end to the second end.

[0141] In some embodiments, a height of the first protruding member is greater than a height of the second protruding member.

[0142] Preferably, the ratio of the height of the first protruding element to the height of the second protruding element is ≥2.

[0143] In some embodiments, the first limiting element 113 and the top fixing element 111 are integrally formed.

[0144] like Figure 3 As shown, the first bottom fixing unit 120 includes a first bottom fixing element 121, a second connecting element 122, a first locking element 123, and a first rotating element 124. The first bottom fixing element 121 is disposed at the lower portion of the affected bone and below the top fixing unit 110; the second connecting element 122 is disposed at the top of the first bottom fixing element 121 and connected to the first fastening unit 170; the first locking element 123 is disposed at the bottom and / or side of the first bottom fixing element 121 and is locked to the second bottom fixing unit 130; and the first rotating element 124 is disposed at the side of the first bottom fixing element 121 and is rotatably connected to the first end of the first folding fixing unit 140.

[0145] Among them, when the first folding fixing unit 140 and the second folding fixing unit 150 are both in the initial state, the first bottom fixing element 121 is not in contact with the second bottom fixing unit 130; when the first folding fixing unit 140 and the second folding fixing unit 150 are both in the folded state, the first bottom fixing element 121 is in contact with the second bottom fixing unit 130, and the first locking element 123 is locked and connected with the second bottom fixing unit 130.

[0146] Specifically, the first bottom fixing element 121 is located below the top fixing element 111 ; the second connecting element 122 corresponds to the first connecting element 112 .

[0147] The first bottom fixing element 121 is located directly below the top fixing element 111. Specifically, when viewed from above, the horizontal projection of the first bottom fixing element 121 is located inside the horizontal projection of the top fixing element 111. That is, the radial dimension of the first bottom fixing element 121 is smaller than the radial dimension of the top fixing element 111.

[0148] In some embodiments, the outer contour of the first bottom fixing element 121 is substantially circular.

[0149] In some embodiments, the first bottom fixing element 121 includes a first base and a plurality of first rotation grooves, wherein the plurality of first rotation grooves are disposed around the first base and are rotatably connected to the first folding fixing element 141 .

[0150] The number of the first rotation grooves is 2 to 4.

[0151] In some embodiments, the first bottom fixing element 121 is made of metal materials, including but not limited to stainless steel, cobalt alloy, titanium alloy, etc.

[0152] The second connecting elements 122 correspond to the first connecting elements 112 in a one-to-one, one-to-many, or many-to-one manner. That is, the number of second connecting elements 122 is equal to the number of first connecting elements 112, the number of second connecting elements 122 is less than the number of first connecting elements 112, and the number of second connecting elements 122 is greater than the number of first connecting elements 112.

[0153] There is at least one second connecting element 122 , which is evenly distributed on the top of the first bottom fixing element 121 .

[0154] In some embodiments, when there is only one second connecting element 122 , the second connecting element 122 is disposed at the middle of the top of the first bottom fixing element 121 .

[0155] In some embodiments, when there are multiple second connecting elements 122 , the multiple second connecting elements 122 are spaced apart along the radial direction of the first bottom fixing element 121 .

[0156] In some embodiments, when there are multiple second connecting elements 122 , the multiple second connecting elements 122 are symmetrically arranged in a surrounding manner.

[0157] In some embodiments, the second connecting element 122 is a first connecting protrusion. Specifically, the second connecting element 122 includes a first protrusion and a first connecting member. The first protrusion is disposed on the top of the first bottom fixing element 121; the first connecting member is disposed around the first protrusion and connected to the first fastening unit 170.

[0158] In some embodiments, the second connecting element 122 is a second through hole and is disposed through the upper and lower surfaces of the first bottom fixing element 121 .

[0159] When the second connecting element 122 is a second through hole, the second connecting element 122 matches the first rotation groove of the first bottom fixing element 121, including the second connecting element 122 corresponding to the first rotation groove and the second connecting element 122 being arranged between two adjacent first rotation grooves.

[0160] When the second connecting element 122 is a second through hole, the cross section of the second connecting element 122 is circular, sector-shaped, or petal-shaped.

[0161] In some embodiments, the second connecting element 122 and the first bottom fixing element 121 are integrally formed.

[0162] There is at least one first locking element 123 , which is evenly distributed on the side and / or bottom of the first bottom fixing element 121 .

[0163] Generally, when the first locking element 123 is disposed on a side of the first bottom fixing element 121, the first locking element 123 does not protrude from the side of the first bottom fixing element 121. That is, from a top view, only the first bottom fixing element 121 can be seen, and the first locking element 123 cannot be seen.

[0164] In some embodiments, when there is only one first locking element 123 , the first locking element 123 is disposed at the center of the bottom of the first bottom fixing element 121 .

[0165] In some embodiments, when there are multiple first locking elements 123 , the multiple first locking elements 123 are disposed around the first bottom fixing element 121 .

[0166] In some embodiments, when the first locking element 123 is disposed on a side of the first bottom fixing element 121 , the first locking element 123 is disposed between two adjacent first rotation grooves.

[0167] In some embodiments, when the second connecting elements 122 are second through holes and there are multiple of them, the first locking element 123 is disposed between two adjacent second connecting elements 122 .

[0168] In some embodiments, the first locking element 123 is a first positioning protrusion and / or a first positioning groove.

[0169] In some embodiments, the longitudinal section of the first locking element 123 is L-shaped or J-shaped.

[0170] In some embodiments, the first locking element 123 and the first bottom fixing element 121 are integrally formed.

[0171] The first rotating elements 124 are disposed in the corresponding first rotating grooves of the first bottom fixing element 121. Generally, the number of the first rotating elements 124 matches the number of the first rotating grooves.

[0172] In some embodiments, the first rotating element 124 is a first rotating shaft. Two ends of the first rotating element 124 are respectively fixedly connected to two side walls of the corresponding first rotating groove.

[0173] In some embodiments, the first rotating element 124 is a first rotating groove. A first rotating element 124 is disposed on each of two sidewalls of the first rotating groove.

[0174] Generally, the first rotating element 124 and the first bottom fixing element 121 are integrally formed.

[0175] like Figure 4 As shown, the second bottom fixing unit 130 includes a second bottom fixing element 131, a third connecting element 132, a second locking element 133, and a second rotating element 134. The second bottom fixing element 131 is disposed at the lower portion of the first bottom fixing unit 120; the third connecting element 132 is disposed at the top and / or side of the second bottom fixing element 131 and is connected to the second fastening unit 180; the second locking element 133 is disposed at the top and / or side of the second bottom fixing element 131 and is locked to the first bottom fixing unit 120; and the second rotating element 134 is disposed at the side of the second bottom fixing element 131 and is rotatably connected to the first end of the second folding fixing unit 150.

[0176] Among them, when the first folding fixing unit 140 and the second folding fixing unit 150 are both in the initial state, the second bottom fixing element 131 is not in contact with the first bottom fixing unit 120; when the first folding fixing unit 140 and the second folding fixing unit 150 are both in the folded state, the second bottom fixing element 131 is in contact with the first bottom fixing unit 120, and the second locking element 133 is locked and connected with the first bottom fixing unit 120.

[0177] Specifically, the second bottom fixing element 131 is located at the lower portion of the first bottom fixing element 121 ; the second locking element 133 is locked with the first locking element 123 .

[0178] The second bottom fixing element 131 is located directly below the first bottom fixing element 121. Generally, the radial dimension of the second bottom fixing element 131 is equal to the radial dimension of the first bottom fixing element 121.

[0179] In some embodiments, the outer contour of the second bottom fixing element 131 is substantially circular.

[0180] In some embodiments, the second bottom fixing element 131 includes a second base and a plurality of second rotation grooves, wherein the plurality of second rotation grooves are arranged around the second base and are rotatably connected to the second folding fixing element 151 .

[0181] The number of the second rotation grooves is equal to the number of the first rotation grooves.

[0182] In some embodiments, the second bottom fixing element 131 is made of metal materials, including but not limited to stainless steel, cobalt alloy, titanium alloy, etc.

[0183] The third connecting elements 132 correspond to the second connecting elements 122 in a one-to-one, one-to-many, or many-to-one manner. That is, the number of third connecting elements 132 is equal to the number of second connecting elements 122, the number of third connecting elements 132 is less than the number of second connecting elements 122, and the number of third connecting elements 132 is greater than the number of second connecting elements 122.

[0184] There is at least one third connecting element 132 , which is evenly distributed on the top of the second bottom fixing element 131 .

[0185] In some embodiments, when there is only one third connecting element 132 , the third connecting element 132 is disposed at the middle of the top of the second bottom fixing element 131 .

[0186] In some embodiments, when there are multiple third connecting elements 132 , the multiple third connecting elements 132 are spaced apart along the radial direction of the second bottom fixing element 131 .

[0187] In some embodiments, when there are multiple third connecting elements 132 , the multiple third connecting elements 132 are symmetrically arranged in a surrounding manner.

[0188] In some embodiments, the third connecting element 132 is a second connecting protrusion. Specifically, the third connecting element 132 includes a second protrusion and a second connecting member. The second protrusion is disposed on the top of the second bottom fixing element 131; the second connecting member is disposed around the second protrusion and connected to the second fastening unit 180.

[0189] In some embodiments, the third connecting element 132 is a third through hole and is disposed through the upper and lower surfaces of the second bottom fixing element 131 .

[0190] When the third connecting element 132 is a third through hole, the third connecting element 132 matches the second rotation groove of the second bottom fixing element 131, including the third connecting element 132 corresponding to the second rotation groove and the third connecting element 132 being arranged between two adjacent second rotation grooves.

[0191] When the third connecting element 132 is a third through hole, the cross section of the third connecting element 132 is circular, fan-shaped, or petal-shaped.

[0192] In some embodiments, the third connecting element 132 and the second bottom fixing element 131 are integrally formed.

[0193] There is at least one second locking element 133 , which is evenly distributed on the side and / or top of the second bottom fixing element 131 .

[0194] Generally, when the second locking element 133 is disposed on the side of the second bottom fixing element 131, the second locking element 133 does not protrude from the side of the second bottom fixing element 131. That is, when viewed from a bottom perspective, only the second bottom fixing element 131 can be seen, and the second locking element 133 cannot be seen.

[0195] In some embodiments, when there is only one second locking element 133 , the second locking element 133 is disposed at the center of the top of the second bottom fixing element 131 .

[0196] In some embodiments, when there are multiple second locking elements 133 , the multiple second locking elements 133 are disposed around the second bottom fixing element 131 .

[0197] In some embodiments, when the second locking element 133 is disposed on a side of the second bottom fixing element 131 , the second locking element 133 is disposed between two adjacent second rotation grooves.

[0198] In some embodiments, when the third connecting elements 132 are third through holes and there are multiple of them, the second locking element 133 is disposed between two adjacent third connecting elements 132 .

[0199] In some embodiments, the second locking element 133 is a second positioning protrusion and / or a second positioning groove.

[0200] In some embodiments, the longitudinal section of the second locking element 133 is L-shaped or J-shaped.

[0201] In some embodiments, the second locking element 133 and the second bottom fixing element 131 are integrally formed.

[0202] The second rotating elements 134 are disposed in the corresponding second rotating grooves of the second bottom fixing element 131. Generally, the number of the second rotating elements 134 matches the number of the second rotating grooves.

[0203] In some embodiments, the second rotating element 134 is a second rotating shaft. Two ends of the second rotating element 134 are respectively fixedly connected to two side walls of the corresponding second rotating groove.

[0204] In some embodiments, the second rotating element 134 is a second rotating groove. A second rotating element 134 is disposed on each of two sidewalls of the second rotating groove.

[0205] Generally, the second rotating element 134 and the second bottom fixing element 131 are integrally formed.

[0206] like Figures 5a-5b As shown, the first folding and fixing unit 140 includes a first folding and fixing element 141, a third rotating element 142, and a fourth rotating element 143. The first folding and fixing element 141 is rotatably disposed on a side of the first bottom fixing unit 120; the third rotating element 142 is disposed at a first end of the first folding and fixing element 141 and is rotatably connected to the first bottom fixing unit 120; and the fourth rotating element 143 is disposed in the middle or second end of the first folding and fixing element 141 and is rotatably connected to the second folding and fixing unit 150.

[0207] Specifically, the first folding fixing element 141 is rotatably disposed on a side of the first bottom fixing element 121 ; and the third rotating element 142 is rotatably connected to the first rotating element 124 .

[0208] The number of the first folding fixing elements 141 matches the number of the first rotation grooves of the first bottom fixing element 121. Generally, the number of the first folding fixing elements 141 is equal to the number of the first rotation grooves, or the number of the first folding fixing elements 141 is twice the number of the first rotation grooves.

[0209] Generally, there are 2 to 8 first folding and fixing elements 141 .

[0210] In some embodiments, the number of first folding and fixing elements 141 is two. The two first folding and fixing elements 141 are symmetrically arranged. That is, when the first folding and fixing unit 140 is in the initial state, the central axes of the two first folding and fixing elements 141 are coplanar; when the first folding and fixing unit 140 is in the folded state, the central axes of the two first folding and fixing elements 141 are collinear.

[0211] In some embodiments, the number of the first folding and fixing elements 141 is 4. Every two first folding and fixing elements 141 form a group, and each group of first folding and fixing elements 141 is connected to the same first rotation groove.

[0212] In some embodiments, the first folding and fixing element 141 is a first folding and fixing steel plate.

[0213] The number of the third rotating elements 142 matches the number of the first folding and fixing elements 141 and matches the number of the first rotating elements 124 .

[0214] In some embodiments, the third rotating element 142 is a third rotating shaft. A third rotating element 142 is disposed on each of two sidewalls of the first end of the first folding and fixing element 141 .

[0215] In some embodiments, the third rotating element 142 is a third rotating groove and is disposed through left and right side walls of the first end of the first folding and fixing element 141 .

[0216] Generally, the third rotating element 142 and the first folding and fixing element 141 are integrally formed.

[0217] The number of the fourth rotating elements 143 matches the number of the first folding and fixing elements 141 .

[0218] In some embodiments, the fourth rotating element 143 is a fourth rotating shaft or a fourth rotating groove. The fourth rotating element 143 is disposed inside the first folding and fixing element 141 , or the fourth rotating element 143 is disposed on a sidewall of the first folding and fixing element 141 .

[0219] Generally, the fourth rotating element 143 and the first folding and fixing element 141 are integrally formed.

[0220] Furthermore, the first folding and fixing unit 140 further includes a second limiting element 144. The second limiting element 144 is disposed at the second end of the second end of the first folding and fixing element 141, and is used to fix the second end of the first folding and fixing element 141 to the affected bone when the second end of the first folding and fixing element 141 abuts against the affected bone.

[0221] The second limiting element 144 is disposed on the outer side of the first folding and fixing element 141 .

[0222] The number of second limiting elements 144 matches the number of first folding and fixing elements 141 / the number of second folding and fixing elements 151. Generally, the number of second limiting elements 144 is not less than the number of first folding and fixing elements 141 / the number of second folding and fixing elements 151. That is, at least one second limiting element 144 is provided at the second end of the first folding and fixing element 141 / the second end of the second folding and fixing element 151.

[0223] In some embodiments, when a plurality of second limiting elements 144 are provided at the second end of the first folding fixing element 141, the plurality of second limiting elements 144 are spaced apart along the length direction of the first folding fixing element 141, or the plurality of second limiting elements 144 are symmetrically arranged in a surrounding manner.

[0224] In some embodiments, the second limiting element 144 is a second limiting protrusion.

[0225] The outer edge surface of the second limiting element 144 is a smooth surface or a rough surface. For example, the outer edge surface of the second limiting element 144 is a threaded surface.

[0226] In some embodiments, the radial dimension of the second limiting element 144 decreases from its first end to its second end, wherein the first end refers to the end of the second limiting element 144 connected to the first folding and fixing element 141, and the second end refers to the end of the second limiting element 144 away from the first folding and fixing element 141.

[0227] In some embodiments, the second limiting element 144 includes a third protruding element and a fourth protruding element, wherein a first end of the third protruding element is connected to the first folding and fixing element 141 ; and a first end of the fourth protruding element is connected to a second end of the third protruding element.

[0228] The radial dimension of the third protrusion remains unchanged; the radial dimension of the fourth protrusion decreases from the first end to the second end.

[0229] In some embodiments, a height of the third protruding element is smaller than a height of the fourth protruding element.

[0230] Preferably, the ratio of the height of the third protruding element to the height of the fourth protruding element is ≤2.

[0231] In some embodiments, the second limiting element 144 and the first folding and fixing element 141 are integrally formed.

[0232] like Figures 6a-6b As shown, the second folding and fixing unit 150 includes a second folding and fixing element 151, a fifth rotating element 152, and a sixth rotating element 153. The second folding and fixing element 151 is rotatably disposed on a side of the second bottom fixing unit 130; the fifth rotating element 152 is disposed at a first end of the second folding and fixing element 151 and is rotatably connected to the second bottom fixing unit 130; and the sixth rotating element 153 is disposed in the middle or second end of the second folding and fixing element 151 and is rotatably connected to the first folding and fixing unit 140.

[0233] Specifically, the second folding fixing element 151 is rotatably disposed on a side of the second bottom fixing element 131 ; the fifth rotating element 152 is rotatably connected to the second rotating element 134 ; and the sixth rotating element 153 is rotatably connected to the fourth rotating element 143 .

[0234] The number of the second folding fixing elements 151 matches the number of the second rotation grooves of the second bottom fixing element 131. Generally, the number of the second folding fixing elements 151 is equal to the number of the second rotation grooves, or the number of the second folding fixing elements 151 is twice the number of the second rotation grooves.

[0235] Generally, there are 2 to 8 second folding and fixing elements 151 .

[0236] In some embodiments, the number of the second folding and fixing elements 151 is two. The two second folding and fixing elements 151 are symmetrically arranged. That is, when the second folding and fixing unit 150 is in the initial state, the central axes of the two second folding and fixing elements 151 are coplanar; when the second folding and fixing unit 150 is in the folded state, the central axes of the two second folding and fixing elements 151 are collinear.

[0237] In some embodiments, the number of the second folding and fixing elements 151 is 4. Every two second folding and fixing elements 151 form a group, and each group of second folding and fixing elements 151 is connected to the same second rotation groove.

[0238] Generally, the number of the second folding fixing elements 151 is equal to the number of the first folding fixing elements 141 , or the number of the second folding fixing elements 151 is twice the number of the first folding fixing elements 141 , or the number of the second folding fixing elements 151 is 1 / 2 of the number of the first folding fixing elements 141 .

[0239] When the number of the second folding fixing elements 151 is equal to the number of the first folding fixing elements 141, the second folding fixing elements 151 are arranged on one side of the first folding fixing element 141, or the second folding fixing elements 151 are coaxially arranged with the first folding fixing element 141 (that is, the central axis of the second folding fixing element 151 is collinear with the central axis of the first folding fixing element 141).

[0240] When the number of the second folding and fixing elements 151 is twice the number of the first folding and fixing elements 141 , a second folding and fixing element 151 is respectively provided on both sides of each first folding and fixing element 141 .

[0241] When the number of the second folding and fixing elements 151 is half of the number of the first folding and fixing elements 141 , a first folding and fixing element 141 is respectively provided on both sides of each second folding and fixing element 151 .

[0242] When the second end of the second folding fixing element 151 is rotationally connected to the middle part of the first folding fixing element 141, the length of the second folding fixing element 151 is smaller than the length of the first folding fixing element 141; when the middle part of the second folding fixing element 151 is rotationally connected to the second end of the first folding fixing element 141, the length of the second folding fixing element 151 is greater than the length of the first folding fixing element 141.

[0243] In some embodiments, the second folding and fixing element 151 is a second folding and fixing steel plate.

[0244] The number of the fifth rotating elements 152 matches the number of the second folding and fixing elements 151 and matches the number of the second rotating elements 134 .

[0245] In some embodiments, the fifth rotating element 152 is a fifth rotating shaft. A fifth rotating element 152 is disposed on each of the two sidewalls of the first end of the second folding and fixing element 151 .

[0246] In some embodiments, the fifth rotating element 152 is a fifth rotating groove. The fifth rotating element 152 is disposed through the left and right side walls of the first end of the second folding and fixing element 151.

[0247] Generally, the fifth rotating element 152 and the second folding and fixing element 151 are integrally formed.

[0248] The number of the sixth rotating elements 153 matches the number of the second folding and fixing elements 151 .

[0249] In some embodiments, the sixth rotating element 153 is a sixth rotating shaft or a sixth rotating groove. The sixth rotating element 153 is disposed inside the second folding and fixing element 151 , or the sixth rotating element 153 is disposed on a sidewall of the second folding and fixing element 151 .

[0250] Generally, the sixth rotating element 153 and the second folding and fixing element 151 are integrally formed.

[0251] Furthermore, the second folding and fixing unit 150 further includes a third limiting element 154. The third limiting element 154 is disposed at the second end of the second folding and fixing element 151 and is used to fix the second end of the second folding and fixing element 151 to the affected bone when the second end of the second folding and fixing element 151 abuts against the affected bone.

[0252] The third limiting element 154 is disposed on the inner side of the second folding and fixing element 151 .

[0253] The number of the third limiting elements 154 matches the number of the second folding and fixing elements 151. Generally, the number of the third limiting elements 154 is not less than the number of the second folding and fixing elements 151. That is, at least one third limiting element 154 is provided at the second end of the second folding and fixing element 151.

[0254] In some embodiments, when a plurality of third limiting elements 154 are provided at the second end of the second folding fixing element 151, the plurality of third limiting elements 154 are spaced apart along the length direction of the second folding fixing element 151, or the plurality of third limiting elements 154 are symmetrically arranged in a surrounding manner.

[0255] In some embodiments, the third limiting element 154 is a fifth protrusion.

[0256] The outer edge surface of the third limiting element 154 is a smooth surface or a rough surface. For example, the outer edge surface of the third limiting element 154 is a threaded surface.

[0257] In some embodiments, the radial dimension of the third limiting element 154 decreases from its first end to its second end. The first end refers to the end of the third limiting element 154 connected to the second folding and fixing element 151, and the second end refers to the end of the third limiting element 154 away from the second folding and fixing element 151.

[0258] In some embodiments, the third limiting element 154 includes a fifth protrusion and a sixth protrusion, wherein a first end of the fifth protrusion is connected to the first folding and fixing element 141 / the second folding and fixing element 151 ; and a first end of the sixth protrusion is connected to a second end of the fifth protrusion.

[0259] The radial dimension of the fifth protrusion remains unchanged; the radial dimension of the sixth protrusion decreases from the first end to the second end.

[0260] In some embodiments, a height of the fifth protrusion is less than a height of the sixth protrusion.

[0261] Preferably, the ratio of the height of the fifth protruding element to the height of the sixth protruding element is ≤2.

[0262] In some embodiments, the third limiting element 154 and the second folding and fixing element 151 are integrally formed.

[0263] like Figure 7 As shown, the side fixing unit 160 includes a side fixing element 161 and a fourth connecting element 162. The side fixing element 161 is disposed on the side of the affected bone; the fourth connecting element 162 is disposed on the side fixing element 161 and connected to the second fastening unit 180.

[0264] Specifically, the side fixing element 161 is disposed on one side of the top fixing element 111 ; the fourth connecting element 162 is connected to the third connecting element 132 through the second fastening unit 180 .

[0265] The side fixing element 161 is a side fixing steel plate, and its shape includes but is not limited to a circle, a rounded rectangle, a waisted circle, etc., and has a certain curvature so that it can fit the affected bone.

[0266] In some embodiments, the side fixing element 161 is made of metal material, including but not limited to stainless steel, cobalt alloy, titanium alloy, etc.

[0267] There is at least one fourth connecting element 162 , which is distributed on the side fixing elements 161 .

[0268] In some embodiments, when there is only one fourth connecting element 162 , the fourth connecting element 162 is disposed in the middle of the side fixing element 161 .

[0269] In some embodiments, when there are multiple fourth connecting elements 162 , the multiple fourth connecting elements 162 are spaced apart along the length direction and / or width direction of the side fixing element 161 .

[0270] In some embodiments, when there are multiple fourth connecting elements 162 , the multiple fourth connecting elements 162 are arranged in a surrounding symmetrical manner.

[0271] In some embodiments, the fourth connecting element 162 is a third connecting protrusion. Specifically, the fourth connecting element 162 includes a third protrusion and a third connecting member. The third protrusion is disposed on top of the side fixing element 161; the third connecting member is disposed around the third protrusion and is connected to the second fastening unit 180.

[0272] In some embodiments, the fourth connecting element 162 is a fourth through hole and is disposed through the upper and lower surfaces of the side fixing element 161 .

[0273] In some embodiments, the cross-section of the fourth connecting element 162 is circular, fan-shaped, or petal-shaped.

[0274] Furthermore, the side fixing unit 160 further includes a fourth limiting element 163. The fourth limiting element 163 is provided on the side fixing element 161 and protrudes from the bottom of the side fixing element 161, and is used to fix the side fixing element 161 to the side of the affected bone.

[0275] There is at least one fourth limiting element 163 , which is distributed at the bottom of the side fixing element 161 .

[0276] In some embodiments, when there is only one fourth limiting element 163 , the fourth limiting element 163 is disposed in the middle of the side fixing element 161 .

[0277] In some embodiments, when there are multiple fourth limiting elements 163 , the multiple fourth limiting elements 163 are spaced apart along the length direction and / or width direction of the side fixing element 161 .

[0278] In some embodiments, when there are multiple fourth limiting elements 163 , the multiple fourth limiting elements 163 are arranged in a surrounding symmetrical manner.

[0279] In some embodiments, there is one fourth connecting element 162 and at least two fourth limiting elements 163. The two fourth limiting elements 163 are symmetrically disposed on both sides of the fourth connecting element 162 with the fourth connecting element 162 as the center.

[0280] In some embodiments, there are at least two fourth connecting elements 162 , which are arranged in a symmetrical manner around the fourth connecting elements 162 , and there is one fourth limiting element 163 , which is arranged at the symmetrical center of the fourth connecting elements 162 .

[0281] In some embodiments, there are at least two fourth connecting elements 162 arranged symmetrically around the periphery; there are at least two fourth limiting elements 163. One fourth limiting element 163 is disposed at the symmetrical center of a plurality of fourth connecting elements 162, and the remaining fourth limiting elements 163 are disposed on the outside of the corresponding fourth connecting elements 162.

[0282] In some embodiments, there are at least two fourth connecting elements 162, spaced apart along the length and / or width of the side fixing element 161. There are at least two fourth limiting elements 163. At least one fourth limiting element 163 is disposed outside the outermost fourth connecting element 162. Furthermore, a fourth limiting element 163 is disposed between two adjacent fourth connecting elements 162.

[0283] In some embodiments, the fourth limiting element 163 is a third limiting protrusion, wherein the outer edge surface of the fourth limiting element 163 is a smooth surface or a rough surface, for example, the outer edge surface of the fourth limiting element 163 is a threaded surface.

[0284] In some embodiments, the radial dimension of the fourth limiting element 163 decreases from its first end to its second end. The first end refers to the end of the fourth limiting element 163 connected to the side fixing element 161, and the second end refers to the end of the fourth limiting element 163 away from the side fixing element 161.

[0285] In some embodiments, the fourth limiting element 163 includes a fifth limiting protrusion and a sixth limiting protrusion, wherein a first end of the fifth limiting protrusion is connected to the side fixing element 161 ; and a first end of the sixth limiting protrusion is connected to a second end of the fifth limiting protrusion.

[0286] Among them, the radial size of the fifth limiting protrusion remains unchanged; the radial size of the sixth limiting protrusion decreases from its first end to its second end.

[0287] In some embodiments, a height of the fifth limiting protrusion is greater than a height of the sixth limiting protrusion.

[0288] Preferably, the ratio of the height of the fifth limiting protrusion to the height of the sixth limiting protrusion is ≥2.

[0289] In some embodiments, the fourth limiting element 163 and the side fixing element 161 are integrally formed.

[0290] The first fastening unit 170 is connected to the first connecting element 112 and the second connecting element 122 respectively.

[0291] There is at least one first fastening unit 170 , and the number of the first fastening units 170 matches the number of the first connecting elements 112 and the number of the second connecting elements 122 .

[0292] In some embodiments, the first fastening unit 170 is a fixing wire.

[0293] The second fastening unit 180 is connected to the third connecting element 132 and the fourth connecting element 162 respectively.

[0294] There is at least one second fastening unit 180 , and the number of the second fastening units 180 matches the number of the third connecting elements 132 and the fourth connecting elements 162 .

[0295] In some embodiments, the second fastening unit 180 is a fixing wire.

[0296] Drilling holes in the affected bone to create a surgical path;

[0297] Connecting the first end of the first fastening unit 170 to the second connecting element 122;

[0298] Place the first bottom fixing unit 120, the second bottom fixing unit 130, the first folding fixing unit 140, and the second folding fixing unit 150 under the affected bone along the surgical path, and abut against the bone under the affected bone, with the second end of the first fastening unit 170 located outside the surgical path;

[0299] Applying an external force to the first bottom fixing element 121 causes the first bottom fixing element 121 to move downward and abut against the second bottom fixing element 131 , causing the first folding fixing element 141 and the second folding fixing element 151 to rotate relative to each other and be fixed by the first locking element 123 and the second locking element 133 ;

[0300] The first bottom fixing unit 120, the second bottom fixing unit 130, the first folding fixing unit 140 and the second folding fixing unit 150 are moved upward as a whole through the second end of the first fastening unit 170, so that the second end of the first folding fixing element 141 or the second end of the second folding fixing element 151 abuts against the lower surface of the affected bone and is firmly fixed by the third limiting element 154;

[0301] Place the top fixing element 111 above the surgical path, and make the first limiting element 113 located inside the surgical path;

[0302] Connect the second end of the first fastening unit 170 to the first connecting element 112 so that the top fixing element 111 is firmly fixed above the affected bone;

[0303] Connecting the first end of the second fastening unit 180 to the third connecting element 132;

[0304] The side fixing element 161 is placed on the bone on one side of the affected bone and fixed to the bone via the fourth limiting element 163;

[0305] The entire fastening unit 180 is fixed by connecting the second end of the second fastening unit 180 to the fourth connecting element 162 .

[0306] The advantages of the present invention are that by implanting the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit and the second folding fixing unit, the side opening at the affected area is reduced, which can reduce the impact on other soft tissues; the first fastening unit is used to connect the top fixing unit and the first bottom fixing unit, thereby reducing the dislocation problem caused by displacement of the top fixing unit; the second fastening unit is used to connect the side fixing unit and the second bottom fixing unit, thereby reducing the dislocation problem caused by displacement; the side fixing unit, the top fixing unit, the first bottom fixing unit and the second bottom fixing unit are used to form a stable triangular structure, thereby avoiding displacement of each fixing unit; and the acromioclavicular ligament and the coracoclavicular ligament are repaired at the same time, thereby avoiding the problem that the acromioclavicular joint cannot be anatomically reduced.

[0307] Example 2

[0308] This embodiment is a variation of embodiment 1.

[0309] like Figure 8 As shown, the acromioclavicular joint reconstruction device 100 further includes a locking unit 190 , which is connected to the top fixing unit 110 and is used to lock the top fixing unit 110 with the bone.

[0310] like Figure 9 As shown, the top fixing unit 110 further includes a first locking element 114. The first locking element 114 is disposed on the top fixing unit 110 and is detachably connected to the locking unit 190.

[0311] Specifically, the first locking element 114 is disposed on the top fixing element 111 .

[0312] There are at least two first locking elements 114 , which are distributed on the top fixing element 111 .

[0313] In some embodiments, a plurality of first locking elements 114 are spaced apart along the length direction and / or width direction of the top fixing element 111 .

[0314] In some embodiments, the first locking elements 114 are arranged in a circumferentially symmetrical manner.

[0315] In some embodiments, the cross-section of the first locking element 114 is circular or oval.

[0316] In some embodiments, the first locking element 114 is a first nail hole.

[0317] like Figure 10 As shown, the locking unit 190 includes a second locking element 191 , wherein the second locking element 191 is detachably connected to the top fixing unit 110 .

[0318] Specifically, the second locking element 191 is detachably connected to the first locking element 114 .

[0319] The number of the second locking elements 191 matches the number of the first locking elements 114. Generally, the number of the second locking elements 191 is not greater than the number of the first locking elements 114.

[0320] In some embodiments, the second locking element 191 is a first screw.

[0321] The method of using this embodiment is as follows:

[0322] After the second end of the first fastening unit 170 is connected to the first connecting element 112 so that the top fixing element 111 is firmly fixed above the affected bone, the second locking element 191 is connected to the corresponding first locking element 114 and nailed into the affected bone.

[0323] The advantage of this embodiment is that the top fixing unit is further locked to the affected bone through the locking unit, thereby improving the degree of fixation.

[0324] Example 3

[0325] This embodiment is a variation of Embodiment 1 and Embodiment 2.

[0326] like Figure 11 As shown, the acromioclavicular joint reconstruction device 100 further includes a locking unit 190. The locking unit 190 is connected to the side fixing unit 160 and is used to lock the side fixing unit 160 with the bone.

[0327] like Figure 12 As shown, the side fixing unit 160 further includes a third locking element 164. The third locking element 164 is provided on the side fixing unit 160 and is detachably connected to the locking unit 190.

[0328] Specifically, the third locking element 164 is disposed on the side fixing element 161 .

[0329] There are at least two third locking elements 164 , which are distributed on the side fixing elements 161 .

[0330] In some embodiments, a plurality of third locking elements 164 are spaced apart along the length direction and / or width direction of the side fixing element 161 .

[0331] In some embodiments, the third locking elements 164 are arranged in a circumferentially symmetrical manner.

[0332] In some embodiments, the cross-section of the third locking element 164 is circular or oval.

[0333] In some embodiments, the third locking element 164 is a second nail hole.

[0334] like Figure 13 As shown, the locking unit 190 includes a fourth locking element 192 , wherein the fourth locking element 192 is detachably connected to the side fixing unit 160 .

[0335] Specifically, the fourth locking element 192 is detachably connected to the third locking element 164 .

[0336] The number of the fourth locking elements 192 matches the number of the third locking elements 164. Generally, the number of the fourth locking elements 192 is not greater than the number of the third locking elements 164.

[0337] In some embodiments, the fourth locking element 192 is a second screw.

[0338] The method of using this embodiment is as follows:

[0339] After the second end of the second fastening unit 180 is connected to the fourth connecting element 162 , the fourth locking element 192 is connected to the corresponding third locking element 164 and nailed into the bone.

[0340] The advantage of this embodiment is that the side fixing unit is further locked to the bone by the locking unit, thereby improving the degree of fixation.

[0341] Example 4

[0342] This embodiment relates to the acromioclavicular joint reconstruction system of the present invention.

[0343] like Figure 14 As shown, an acromioclavicular joint reconstruction system includes the acromioclavicular joint reconstruction device 100 described in Examples 1 to 3 and a guide device 200. The guide device 200 is used to guide the first bottom fixing unit 120, the second bottom fixing unit 130, the first folding fixing unit 140, and the second folding fixing unit 150 of the acromioclavicular joint reconstruction device 100 to be placed at the lower part of the affected bone.

[0344] like Figure 15As shown, the guiding device 200 includes a guiding unit 210 and an auxiliary unit 220. The guiding unit 210 is sleeved with the first bottom fixing unit 120, the second bottom fixing unit 130, the first folding fixing unit 140, and the second folding fixing unit 150; the auxiliary unit 220 is slidably connected to the guiding unit 210, and the first end of the auxiliary unit 220 abuts against the top end of the first bottom fixing unit 120.

[0345] like Figure 16 As shown, the guide unit 210 includes a first guide element 211 and a first sliding element 212. The first guide element 211 is sleeved around the first bottom fixing unit 120, the second bottom fixing unit 130, the first folding fixing unit 140, and the second folding fixing unit 150; the first sliding element 212 is disposed on the inner edge of the first guide element 211 and is slidably connected to the auxiliary unit 220.

[0346] The inner diameter of the first guide element 211 matches the outer diameter of the first bottom fixing unit 120 (the outer diameter of the first bottom fixing element 121) and the outer diameter of the second bottom fixing unit 130 (the outer diameter of the second bottom fixing element 131). Generally, the outer diameter of the first guide element 211 is not less than the outer diameter of the first bottom fixing unit 120 and the outer diameter of the second bottom fixing unit 130.

[0347] The length of the first guide element 211 matches the length of the first bottom fixing unit 120, the second bottom fixing unit 130, the first folding fixing unit 140, and the second folding fixing unit 150. Generally, the length of the first guide element 211 is not less than the height of the first bottom fixing unit 120, the height of the second bottom fixing unit 130, and the height of the first folding fixing unit 140 and the second folding fixing unit 150 in the unfolded state.

[0348] In some embodiments, the first guiding element 211 is a guiding cylinder.

[0349] In some embodiments, the first guide element 211 is made of metal material, including but not limited to stainless steel.

[0350] There is at least one first sliding element 212 , which is evenly distributed on the inner edge surface of the first guiding element 211 .

[0351] Generally, to ensure sliding stability, there are at least two first sliding elements 212. The first sliding elements 212 are symmetrically arranged around the first sliding element 212.

[0352] Generally, the first sliding element 212 and the first guiding element 211 are integrally formed.

[0353] The length of the first sliding element 212 matches the length of the first guiding element 211. Generally, the length of the first sliding element 212 is not greater than the length of the first guiding element 211.

[0354] In some embodiments, the first sliding element 212 is a first sliding groove. In this case, the length of the first sliding element 212 is less than the length of the first guiding element 211. That is, the top of the first sliding element 212 is coplanar with the top of the first guiding element 211, and the bottom of the first sliding element 212 is located above the bottom of the first guiding element 211.

[0355] In some embodiments, the first sliding element 212 is a first sliding protrusion. In this case, the length of the first sliding element 212 is no greater than the length of the first guide element 211. In addition, the inner diameter of the first sliding element 212 is no less than the outer diameter of the first bottom fixing unit 120 and the outer diameter of the second bottom fixing unit 130.

[0356] like Figure 17 As shown, the auxiliary unit 220 includes a second guide element 221 and a second sliding element 222. The second guide element 221 is sleeved inside the guide unit 210 and sleeved with the first fastening unit 170; the second sliding element 222 is disposed on the outer edge of the second guide element 221 and is slidably connected to the guide unit 210.

[0357] Specifically, the second guiding element 221 is sleeved inside the first guiding element 211 ; the second sliding element 222 is slidably connected to the first sliding element 212 .

[0358] The outer diameter of the second guide element 221 matches the inner diameter of the first guide element 211. Generally, the outer diameter of the second guide element 221 is not greater than the inner diameter of the first guide element 211.

[0359] The inner diameter of the second guide element 221 matches the outer diameter of the first bottom fixing unit 120 (the outer diameter of the first bottom fixing element 121) and the outer diameter of the second bottom fixing unit 130 (the outer diameter of the second bottom fixing element 131). Generally, the inner diameter of the second guide element 221 is no larger than the outer diameters of the first bottom fixing unit 120 and the second bottom fixing unit 130.

[0360] The length of the second guiding element 221 matches the length of the first guiding element 211. Generally, the length of the second guiding element 221 is not less than the length of the first guiding element 211.

[0361] In some embodiments, the second guide element 221 is a guide sleeve.

[0362] In some embodiments, the second guide element 221 is made of metal material, including but not limited to stainless steel.

[0363] There is at least one second sliding element 222 , which is evenly distributed on the outer edge surface of the second guiding element 221 .

[0364] Generally, to ensure sliding stability, there are at least two second sliding elements 222. The plurality of second sliding elements 222 are symmetrically arranged around the outside.

[0365] Generally, the second sliding element 222 and the second guiding element 221 are integrally formed.

[0366] The number of the second sliding elements 222 matches the number of the first sliding elements 212. Generally, the number of the second sliding elements 222 is equal to the number of the first sliding elements 212.

[0367] The length of the second sliding element 222 matches the length of the second guiding element 221. Generally, the length of the second sliding element 222 is not greater than the length of the second guiding element 221.

[0368] In some embodiments, the second sliding element 222 is a second sliding groove. In this case, the length of the second sliding element 222 is less than the length of the second guiding element 221. That is, the bottom end of the second sliding element 222 is coplanar with the bottom end of the second guiding element 221, and the top end of the second sliding element 222 is located below the top end of the second guiding element 221.

[0369] In some embodiments, the second sliding element 222 is a second sliding protrusion. In this case, the length of the second sliding element 222 is not greater than the length of the second guiding element 221.

[0370] The method of use of the present invention is as follows:

[0371] Drilling holes in the affected bone to create a surgical path;

[0372] placing the first guide element 211 into the surgical path;

[0373] Connecting the first end of the first fastening unit 170 to the second connecting element 122;

[0374] Place the first bottom fixing unit 120, the second bottom fixing unit 130, the first folding fixing unit 140, and the second folding fixing unit 150 along the first guide element 211 under the affected bone and abut against the bone under the affected bone, with the second end of the first fastening unit 170 located outside the surgical path;

[0375] The second guide element 221 applies an external force to the first bottom fixing element 121 along the first guide element 211, so that the first bottom fixing element 121 moves downward and abuts against the second bottom fixing element 131, and the first folding fixing element 141 and the second folding fixing element 151 rotate relative to each other and are fixed by the first locking element 123 and the second locking element 133;

[0376] Remove the first guide element 211 and the second guide element 221;

[0377] The first bottom fixing unit 120, the second bottom fixing unit 130, the first folding fixing unit 140 and the second folding fixing unit 150 are integrally moved upward by the second end of the first fastening unit 170, so that the second end of the first folding fixing element 141 or the second end of the second folding fixing element 151 abuts against the lower surface of the affected bone and is firmly fixed by the second limiting element 144 or the third limiting element 154;

[0378] Place the top fixing element 111 above the surgical path, and make the first limiting element 113 located inside the surgical path;

[0379] Connect the second end of the first fastening unit 170 to the first connecting element 112 so that the top fixing element 111 is firmly fixed above the affected bone;

[0380] Connecting the first end of the second fastening unit 180 to the third connecting element 132;

[0381] The side fixing element 161 is placed on the bone on one side of the affected bone and fixed to the bone via the fourth limiting element 163;

[0382] The entire fastening unit 180 is fixed by connecting the second end of the second fastening unit 180 to the fourth connecting element 162 .

[0383] The advantages of the present invention are that the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit and the second folding fixing unit are quickly guided by the guiding unit, thereby reducing the contact of the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit and the second folding fixing unit with the bones of the surgical path; the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit and the second folding fixing unit are folded by the auxiliary unit, which is simple to operate and saves time and effort.

[0384] Example 5

[0385] This embodiment is a variation of embodiment 4.

[0386] like Figure 18As shown, the first bottom fixing unit 120 further includes a fifth limiting element 125. The fifth limiting element 125 is disposed on the top of the first bottom fixing unit 120 and is detachably connected to the auxiliary unit 220.

[0387] Specifically, the fifth limiting element 125 is disposed on the top of the first bottom fixing element 121 .

[0388] There are a plurality of fifth limiting elements 125 , which are evenly distributed on the top of the first bottom fixing element 121 .

[0389] Generally, the plurality of fifth limiting elements 125 are arranged in a surrounding symmetrical manner.

[0390] Generally, the fifth limiting element 125 and the first bottom fixing element 121 are formed integrally.

[0391] In some embodiments, the fifth limiting element 125 is a fourth limiting protrusion or a first limiting groove.

[0392] like Figure 19 As shown, the auxiliary unit 220 further includes a sixth limiting element 223 , wherein the sixth limiting element 223 is disposed at the bottom of the second guiding element 221 and is detachably connected to the first bottom fixing unit 120 .

[0393] Specifically, the sixth limiting element 223 is detachably connected to the fifth limiting element 125 .

[0394] There is at least one sixth limiting element 223 , which is evenly distributed on the bottom of the second guiding element 221 .

[0395] Generally, the plurality of sixth limiting elements 223 are arranged in a surrounding symmetrical manner.

[0396] The number of the sixth limiting elements 223 matches the number of the fifth limiting elements 125. Generally, the number of the sixth limiting elements 223 is equal to the number of the fifth limiting elements 125.

[0397] Generally, the sixth limiting element 223 and the second guiding element 221 are formed integrally.

[0398] In some embodiments, the sixth limiting element 223 is a fifth limiting protrusion or a second limiting groove.

[0399] The method of using this embodiment is as follows:

[0400] The second guiding element 221 is moved downward along the first guiding element 211 so that the sixth limiting element 223 abuts against the fifth limiting element 125. The second guiding element 221 applies external force to the first bottom fixing element 121 so that the first bottom fixing element 121 moves downward and abuts against the second bottom fixing element 131. The first folding fixing element 141 and the second folding fixing element 151 rotate relative to each other and are fixed by the first locking element 123 and the second locking element 133.

[0401] The advantage of this embodiment is that, through the cooperation of the fifth limiting element and the sixth limiting element, the auxiliary unit can accurately and evenly apply pressure to the folding and fixing unit, thereby improving stability.

[0402] The above description is only a preferred embodiment of the present invention and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for acromioclavicular joint reconstruction, characterized in that: include: A top fixing unit, the top fixing unit being arranged on the upper part of the affected bone; a first bottom fixing unit, which is disposed at a lower portion of the affected bone and below the top fixing unit; a second bottom fixing unit, which is disposed below the first bottom fixing unit and is detachably connected to the first bottom fixing unit; a first folding fixing unit, wherein a first end of the first folding fixing unit is rotatably connected to a side portion of the first bottom fixing unit; a second folding fixing unit, wherein a first end of the second folding fixing unit is rotatably connected to a side portion of the second bottom fixing unit, and a second end of the second folding fixing unit is rotatably connected to a middle portion of the first folding fixing unit; A side fixing unit, the side fixing unit being arranged on the side of the affected bone; a first fastening unit, wherein the first fastening unit is connected to the top fixing unit and the first bottom fixing unit respectively; a second fastening unit, the second fastening unit being connected to the second bottom fixing unit and the side fixing unit respectively; Wherein, the top fixing unit includes: A top fixing element, the top fixing element is arranged on the upper part of the affected bone, and the top fixing element is made of metal material; Wherein, the first folding and fixing unit includes: a first folding fixing element, the first folding fixing element being rotatably disposed on a side of the first bottom fixing unit; a third rotating element, the third rotating element being disposed at the first end of the first folding fixing element and being rotatably connected to the first bottom fixing unit; a fourth rotating element, the fourth rotating element being disposed in the middle of the first folding and fixing element and being rotatably connected to the second folding and fixing unit; a second limiting element, the second limiting element being disposed at the second end of the first folding fixing element, and being used to fix the second end of the first folding fixing element to the affected bone when the second end of the first folding fixing element abuts against the affected bone; Wherein, the second folding and fixing unit includes: a second folding and fixing element, the second folding and fixing element being rotatably disposed on a side of the second bottom fixing unit; a fifth rotating element, the fifth rotating element being disposed at the first end of the second folding fixing element and being rotatably connected to the second bottom fixing unit; A sixth rotating element is provided at the second end of the second folding and fixing element and is rotatably connected to the first folding and fixing unit.

2. The acromioclavicular joint reconstruction device according to claim 1, characterized in that: The top fixing unit includes: a first connecting element, the first connecting element being arranged through the upper and lower surfaces of the top fixing element and being connected to the first fastening unit; and / or The first bottom fixing unit includes: a first bottom fixing element, the first bottom fixing element being disposed at a lower portion of the affected bone and being located below the top fixing unit; a second connecting element, the second connecting element being disposed on top of the first bottom fixing element and connected to the first fastening unit; a first locking element, the first locking element being arranged at the bottom and / or side of the first bottom fixing element and being locked with the second bottom fixing unit; a first rotating element, the first rotating element being disposed on a side of the first bottom fixing element and being rotatably connected to a first end of the first folding fixing unit; and / or The second bottom fixing unit includes: a second bottom fixing element, the second bottom fixing element being disposed at a lower portion of the first bottom fixing unit; a third connecting element, the third connecting element being provided on the top and / or the side of the second bottom fixing element and connected to the second fastening unit; a second locking element, the second locking element being arranged on the top and / or the side of the second bottom fixing element and being locked with the first bottom fixing unit; a second rotating element, the second rotating element being disposed on a side of the second bottom fixing element and being rotatably connected to the first end of the second folding fixing unit; and / or The side fixing unit includes: a lateral fixation element, the lateral fixation element being arranged on the side of the affected bone; A fourth connecting element is provided on the side fixing element and is connected to the second fastening unit.

3. The acromioclavicular joint reconstruction device according to claim 2, characterized in that: The top fixing unit further includes: a first limiting element, which is provided on the top fixing element and protrudes from the bottom of the top fixing element, and is used to fix the top fixing element to the upper part of the affected bone; and / or The side fixing unit further includes: The fourth limiting element is arranged on the side fixing element and protrudes from the bottom of the side fixing element, and is used to fix the side fixing element to the side of the affected bone.

4. The acromioclavicular joint reconstruction device according to any one of claims 1 to 3, characterized in that: Also includes: A locking unit is connected to the top fixing unit and / or the side fixing unit, and is used to lock the top fixing unit and / or the side fixing unit with the skeleton.

5. The acromioclavicular joint reconstruction device according to claim 4, characterized in that: The top fixing unit further includes: A first locking element, which is provided on the top fixing unit and is detachably connected to the locking unit; and / or The locking unit comprises: A second locking element is detachably connected to the top fixing unit.

6. The acromioclavicular joint reconstruction device according to claim 4, characterized in that: The side fixing unit further includes: A third locking element, the third locking element being provided on the side fixing unit and being detachably connected to the locking unit; and / or The locking unit comprises: A fourth locking element is detachably connected to the side fixing unit.

7. A system for reconstruction of the acromioclavicular joint, characterized in that: include: The acromioclavicular joint reconstruction device according to any one of claims 1 to 6; A guiding device is used to guide the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit, and the second folding fixing unit of the acromioclavicular joint reconstruction device to be placed at the lower part of the affected bone.

8. The acromioclavicular joint reconstruction system according to claim 7, wherein the guide device comprises: a guiding unit, wherein the guiding unit is sleeved with the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit, and the second folding fixing unit; An auxiliary unit is slidably connected to the guide unit, and a first end of the auxiliary unit abuts against a top end of the first bottom fixing unit.

9. The acromioclavicular joint reconstruction system according to claim 8, characterized in that: The guiding unit comprises: a first guiding element, wherein the first guiding element is sleeved on the first bottom fixing unit, the second bottom fixing unit, the first folding fixing unit, and the second folding fixing unit; a first sliding element, the first sliding element being arranged on an inner edge surface of the first guiding element and being slidably connected to the auxiliary unit; and / or The auxiliary unit comprises: a second guiding element, the second guiding element being sleeved inside the guiding unit and sleeved on the first fastening unit; A second sliding element is provided on an outer edge surface of the second guide element and is slidably connected to the guide unit.

10. The acromioclavicular joint reconstruction system according to claim 9, characterized in that: The first bottom fixing unit further includes: A fifth limiting element is provided on the top of the first bottom fixing unit and is detachably connected to the auxiliary unit.

Images