Spinal process support device

Abstract

The present invention provides a device for supporting the opening of spinous processes, which comprises: a first support member, comprising a first body, a first convex portion, a second convex portion, and a first concave portion; a second support member, comprising a second body, a third convex portion, a fourth convex portion, and a second concave portion; an axis is pivotally arranged on the first support member and the second support member, and the first support member and the second support member pivot relative to each other with the axial direction of the axis as the center; when the device for supporting the opening of spinous processes is in an unfolded state, the first convex portion and the third convex portion are placed between the spinous processes, and then the first support member and the second support member are pivoted, so that the device for supporting the opening of spinous processes is in a clamped state, so that the first convex portion and the third convex portion are located on one side of the spinous process, the second convex portion and the fourth convex portion are located on the other side of the spinous process, and the first concave portion and the second concave portion are located between the spinous processes, so as to provide a supporting function for supporting the opening of the spinous processes.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and in particular to a device and method for supporting the spreading of spinous processes. Background Art

[0002] For patients with spinal diseases, it is easy for the intervertebral disc to develop lesions and atrophy, resulting in the narrowing of the space between the spinal processes and compression of the spinal nerves, causing paralysis or pain.

[0003] To solve the above problems, existing treatment methods include implanting support members, pedicle screws or artificial intervertebral disc fillers, all of which aim to raise the intervertebral processes and open the neural foraminal space to reduce or eliminate the patient's discomfort.

[0004] As for the currently available support components, some of them must destroy the spinous process ligament during installation, and generally have defects such as complex structure, difficult operation, and difficult installation and removal, which results in a long operation time and increases the risk of bleeding and infection for patients. Summary of the invention

[0005] Therefore, how to develop an "interspinal process support device and method" with a simple structure, easy operation, simple installation and removal methods, and the ability to preserve the spinous process ligaments and maintain the stability of the cone is an issue that people in the relevant technical field urgently need to solve.

[0006] To achieve the above object, the technical solution adopted by the present invention is:

[0007] A spinal process spreading support device, characterized in that it comprises a first support member, a second support member and a shaft, wherein:

[0008] The first support member comprises:

[0009] A first body having a first surface and a second surface opposite to each other;

[0010] a first protrusion, protrudingly disposed on one side of the second surface;

[0011] a second protrusion, protruding from the first protrusion and disposed on the other side of the second surface;

[0012] a first concave portion formed between the second surface and the first convex portion and the second convex portion;

[0013] The second support member comprises:

[0014] A second body having a third surface and a fourth surface opposite to each other;

[0015] a third protrusion, protrudingly disposed on one side of the fourth surface;

[0016] a fourth protrusion, protrudingly disposed on the other side of the fourth surface relative to the third protrusion;

[0017] a second concave portion formed between the fourth surface and the third convex portion and the fourth convex portion;

[0018] The shaft body is pivotally mounted on the first support member and the second support member, and the first support member and the second support member pivot relative to each other with the axis center of the shaft body as the center of the circle, so that the inter-spinal process support device is in an expanded state and a clamped state; when the inter-spinal process support device is in the expanded state, the first convex portion contacts the third convex portion; when the inter-spinal process support device is in the clamped state, the first surface contacts the third surface.

[0019] The interspinal process spreading support device, wherein:

[0020] The first support member further comprises:

[0021] At least one first pivot plate is disposed on the first surface relative to the first protrusion, each of the first pivot plates is provided with a first hole, wherein a first engaging protrusion and a second engaging protrusion are provided on the surface of at least one of the first pivot plates, and the first engaging protrusion and the second engaging protrusion are distributed on the surface of the first pivot plate in a fan shape with the first hole as the center;

[0022] At least one first engaging recess is disposed on the first body at one side of the first pivot plate;

[0023] The second support member also includes:

[0024] At least one second pivot plate is disposed on the third surface relative to the third protrusion, each of the second pivot plates is provided with a second hole, wherein a third engaging protrusion and a fourth engaging protrusion are provided on the surface of at least one of the second pivot plates, and the third engaging protrusion and the fourth engaging protrusion are distributed on the surface of the second pivot plate in a fan shape with the second hole as the center;

[0025] At least one second engaging recess is disposed on the second body at one side of the second pivot plate;

[0026] When the inter-spinal process support device is in the clamped state, the first engaging protrusion is engaged with the second engaging recess and the third engaging protrusion is engaged with the first engaging recess; when the inter-spinal process support device is in the expanded state, the first protrusion and the third protrusion are in contact with each other, the second engaging protrusion is engaged with the second engaging recess and the fourth engaging protrusion is engaged with the first engaging recess.

[0027] The interspinal process spreading support device, wherein:

[0028] The first engaging protrusion, the second engaging protrusion, the third engaging protrusion and the fourth engaging protrusion are in the shape of long strips, and their cross sections are in the shape of semicircles. The length directions of the first engaging protrusion, the second engaging protrusion, the third engaging protrusion and the fourth engaging protrusion are parallel to the axial direction of the shaft body, and

[0029] The first engaging recess and the second engaging recess are in the shape of long strips, and their cross sections are in the shape of semicircles. The length directions of the first engaging recess and the second engaging recess are parallel to the axial direction of the shaft body.

[0030] The interspinal process spreading support device, wherein:

[0031] The first pivot plate has a circular first head portion, the first head portion is concentric with the first hole, and the first engaging protrusion and the second engaging protrusion are disposed on a surface of at least one of the first heads; and

[0032] The second pivot plate has a circular second head portion, the second head portion is concentric with the second hole, and the third engaging protrusion and the fourth engaging protrusion are disposed on a surface of at least one of the second heads portion.

[0033] The inter-spinal process spreading support device, wherein: the first support member has two first pivot plates, the second support member has two second pivot plates, and the two first pivot plates are spaced apart from the two second pivot plates.

[0034] The interspinal process spreading support device, wherein:

[0035] The first support member further includes two first grooves, which are arranged on the other side of the first body relative to the shaft body and are parallel to the axial direction of the shaft body and are respectively located at two opposite corners of the first surface;

[0036] The second support member further includes two second grooves, which are arranged on the other side of the second body relative to the shaft body and are parallel to the axial direction of the shaft body and are respectively located at two opposite corners of the third surface;

[0037] When the inter-spinal process support device is in the clamped state, each of the first grooves respectively forms an elongated groove with each of the second grooves at the corresponding position, and each of the elongated grooves can be inserted into a tool parallel to the axial direction of the shaft body to form a loose fit, and by swinging the tool, the first support member and the second support member are pivotally separated relative to each other with the axis of the shaft body as the center of the circle, so that the inter-spinal process support device is in the expanded state.

[0038] The inter-spinal process support device, wherein: the height of the first convex portion protruding from the second surface is greater than the height of the second convex portion protruding from the second surface, and the height of the third convex portion protruding from the fourth surface is greater than the height of the fourth convex portion protruding from the fourth surface.

[0039] The inter-spinal process support device, wherein: the height of the first convex portion protruding from the second surface is the same as the height of the third convex portion protruding from the fourth surface, and the height of the second convex portion protruding from the second surface is the same as the height of the fourth convex portion protruding from the fourth surface.

[0040] The inter-spinal process support device, wherein: there is a first angle between the first protrusion and the second surface, there is a second angle between the second protrusion and the second surface, there is a third angle between the third protrusion and the fourth surface, there is a fourth angle between the fourth protrusion and the fourth surface, and the first angle, the second angle, the third angle and the fourth angle are greater than 90 degrees.

[0041] The inter-spinal process spreading support device, wherein: the first angle is the same as the third angle, and the second angle is the same as the fourth angle.

[0042] The inter-spinal process support device, wherein: when the inter-spinal process support device is in the clamped state, the first surface, the second surface, the third surface and the fourth surface are parallel to each other.

[0043] The inter-spinal process support device, wherein: the first convex portion and the second convex portion are protruded from the second surface with the outer diameter gradually reduced, and the third convex portion and the fourth convex portion are protruded from the fourth surface with the outer diameter gradually reduced.

[0044] The inter-spinal process support device, wherein: the distance between the first convex portion and the second convex portion is in the range of 2 to 10 mm, and the distance between the third convex portion and the fourth convex portion is the same as the distance between the first convex portion and the second convex portion.

[0045] The inter-spinal process support device, wherein: the first body has a fifth surface and a sixth surface opposite to each other, the fifth surface and the sixth surface are located between the first surface and the second surface, and the fifth surface and the sixth surface are perpendicular to the first surface and the second surface; the second body has a seventh surface and an eighth surface opposite to each other, the seventh surface and the eighth surface are located between the third surface and the fourth surface, and the seventh surface and the eighth surface are perpendicular to the third surface and the fourth surface.

[0046] The inter-spinal support device, wherein: the fifth surface, the sixth surface, the seventh surface, the eighth surface, the two opposite surfaces of the first convex portion parallel to the axial direction of the shaft body, and the two opposite surfaces of the third convex portion parallel to the axial direction of the shaft body, are respectively provided with a concave hole to bury the metal used for development.

[0047] The inter-spinal process support device, wherein: the concave holes arranged on the fifth surface and the sixth surface are respectively located between the second convex part and the first groove; the concave holes arranged on the seventh surface and the eighth surface are respectively located between the fourth convex part and the second groove.

[0048] The inter-spinal process support device, wherein: the metal used for development is one of tantalum alloy, titanium alloy and pure titanium.

[0049] The inter-spinal process support device, wherein: the second surface of the first support member is provided with a third chamfer at the connection with the fifth surface and the sixth surface respectively, and the fourth surface of the second support member is provided with a fourth chamfer at the connection with the seventh surface and the eighth surface respectively; the shape of the third chamfer and the first recess, and the shape of the fourth chamfer and the second recess are both saddle-shaped.

[0050] The inter-spinal process support device, wherein: there is a distance between the fifth surface and the sixth surface, and between the seventh surface and the eighth surface. When the inter-spinal process support device is in the clamping state, the fifth surface and the seventh surface form a smooth surface, and the sixth surface and the eighth surface form a smooth surface. The distance is in the range of 5 to 20 mm.

[0051] The inter-spinal process spreading support device, wherein: when the inter-spinal process spreading support device is in the expanded state, a fifth angle is formed between the first surface and the third surface, and the fifth angle is in the range of 100 to 180 degrees.

[0052] The inter-spinal process support device, wherein: the second surface of the first support member and the first and second convex portions form a smooth saddle shape; the fourth surface of the second support member and the third and fourth convex portions form a smooth saddle shape.

[0053] The inter-spinal process support device, wherein: the first protrusion is arranged in a trapezoidal protrusion on one side of the second surface, and the end of the first protrusion away from the second surface is narrower; the second protrusion is arranged in a trapezoidal protrusion on the other side of the second surface relative to the first protrusion, and the end of the second protrusion away from the second surface is narrower; the third protrusion is arranged in a trapezoidal protrusion on one side of the fourth surface, and the end of the third protrusion away from the fourth surface is narrower; the fourth protrusion is arranged in a trapezoidal protrusion on the other side of the fourth surface relative to the third protrusion, and the end of the fourth protrusion away from the fourth surface is narrower.

[0054] The inter-spinal process spreading support device, wherein: the first support member and the second support member are arranged symmetrically or asymmetrically with respect to the radial direction of the shaft.

[0055] The present invention further provides a method for supporting the interspinal process, which is characterized by comprising:

[0056] (a) preparing an inter-spinal process spreading support device, which comprises:

[0057] A first support member, comprising:

[0058] A first body having a first surface and a second surface opposite to each other;

[0059] a first protrusion, protrudingly disposed on one side of the second surface;

[0060] a second protrusion, protruding from the first protrusion and disposed on the other side of the second surface;

[0061] a first concave portion formed between the second surface and the first convex portion and the second convex portion;

[0062] A second support member, comprising:

[0063] A second body having a third surface and a fourth surface opposite to each other;

[0064] a third protrusion, protrudingly disposed on one side of the fourth surface;

[0065] a fourth protrusion, protrudingly disposed on the other side of the fourth surface relative to the third protrusion;

[0066] a second concave portion formed between the fourth surface and the third convex portion and the fourth convex portion;

[0067] An axle body is pivotally mounted on the first support member and the second support member, and the first support member and the second support member are relatively pivotable with the axis of the axle body as the center of the circle;

[0068] (b) rotating the first support member and the second support member so that the first protrusion contacts the third protrusion, and the first support member and the second support member are in an unfolded state;

[0069] (c) placing the first protrusion and the third protrusion of the first supporting member and the second supporting member between two spinous processes;

[0070] (d) rotating the first support member and the second support member so that the first surface contacts the third surface, and the first support member and the second support member are in a clamping state; and

[0071] (e) The first convex portion and the third convex portion are located on one side of the two vertebrae, the second convex portion and the fourth convex portion are located on the other side of the two vertebrae, and the first concave portion and the second concave portion are located between the two vertebrae.

[0072] In summary, the interspinal process support device provided by the present invention utilizes a first support member and a second support member that can pivot with each other. It has a simple structure, is easy to operate, and is simple to install and remove. It can also retain the spinous process ligaments, maintain the stability of the cone, greatly reduce the risk of bleeding and infection in patients, and provide interspinal process support for patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1It is a schematic diagram of a combined three-dimensional structure of an embodiment of the present invention.

[0074] Figure 2 for Figure 1 Schematic diagram of the exploded three-dimensional structure of an embodiment.

[0075] Figure 3A for Figure 1 A schematic front structural diagram of the first support member of the embodiment.

[0076] Figure 3B for Figure 3A The structural diagram on the right side of .

[0077] Figure 4A for Figure 1 A schematic front structural diagram of the second support member of the embodiment.

[0078] Figure 4B for Figure 4A The structural diagram on the right side of .

[0079] Figure 5A for Figure 1 A schematic diagram of the combined front view structure of an embodiment.

[0080] Figure 5B for Figure 5A The structural diagram on the right side of .

[0081] FIG. 6A to FIG. 6B for Figure 1 Embodiment Figure 5A Schematic diagram of the continuous action of converting the clamped state into the unfolded state.

[0082] Figure 7 for Figure 1 A schematic diagram of the three-dimensional structure of the embodiment in an unfolded state.

[0083] FIG. 8A to FIG. 8C for Figure 1 Schematic diagram of continuous action of the embodiment installed between the spinous processes.

[0084] Fig. 9 The present invention discloses a method flow for interspinal process spreading and supporting using the interspinal process spreading and supporting device of the present invention.

[0085] FIG. 10A to FIG. 10B To use the tool Figure 1 Schematic diagram of the continuous action of prying open the embodiment.

[0086] Fig.11A It is a schematic diagram of a combined three-dimensional structure of another embodiment of the present invention.

[0087] Fig. 11B for Fig.11A A schematic diagram of the combined front structure of an embodiment.

[0088] Fig. 11C for Fig.11A The right side structural diagram of the embodiment.

[0089] Fig. 12A It is a schematic diagram of a combined three-dimensional structure of another embodiment of the present invention.

[0090] Fig. 12B for Fig. 12A A schematic diagram of the combined front structure of an embodiment.

[0091] Fig. 12C for Fig. 12A The right side structural diagram of the embodiment.

[0092] Figures 13A to 13C For the present invention Figure 1 , Fig.11A , Fig. 12A A schematic diagram of the front structure of the combination of the first support member and the second support member of the embodiment.

[0093] Explanation of reference numerals: 100, 100A, 100B, 100C, 100D, 100E-spinal process support device; 10, 10A, 10B-first support member; 11-first body; 111-first surface; 112, 112A, 112B-second surface; 113, 113A-fifth surface; 114, 114A-sixth surface; 115-first concave arc surface; 116A, 117A-third chamfer; 12, 12B-first convex portion; 121, 122-opposite surfaces; 13, 13B-second convex portion 123, 124, 131, 132-face; 14, 14A, 14B-first concave portion; 15-first pivot plate; 151-first hole; 152-first head; 153-first engaging protrusion; 154-second engaging protrusion; 16-first engaging concave portion; 17-first groove; 171-first chamfer; 18-concave hole; 20, 20A, 20B-second support member; 21-second body; 211-third face; 212, 212A, 212B-fourth face; 213, 213A-seventh face; 21 4, 214A-eighth surface; 215-second concave arc surface; 216A, 217A-fourth chamfer; 22, 22B-third convex portion; 221, 222-opposite surfaces; 23, 23B-fourth convex portion; 223, 224, 231, 232-surfaces; 24, 24A, 24B-second concave portion; 25-second pivot plate; 251-second hole; 252-second head; 253-third engaging convex portion; 254-fourth engaging convex portion; 26-second engaging concave portion; 27-second groove; 271-second chamfer; 28-concave hole; 30, 30A, 30B-axis body; 40-long groove; 200A, 200B-spinal process; 300-spinal process support method flow; 302~308-steps of the inter-spinal process support method flow; 400-tool; D1, D2, D3-distance; F1-axial direction; H1, H2, H3, H4-height; L1, L2, L3, L4-length; R, L-opposite sides; θ1-first angle; θ2-second angle; θ3-third angle; θ4-fourth angle; θ5-fifth angle. DETAILED DESCRIPTION

[0094] See also Figure 1 and Figure 2 As shown, the present invention provides an inter-spinal process support device 100, which includes a first support member 10, a second support member 20 and a shaft 30. The materials of the first support member 10, the second support member 20 and the shaft 30 are not limited, for example, they can be biocompatible metal or plastic. The shaft 30 has an axial direction F1.

[0095] See also Figure 2 , Figure 3A , Figure 3BAs shown in the figure, the first support member 10 includes a first body 11 , a first convex part 12 , a second convex part 13 and a first concave part 14 .

[0096] The first body 11 has a first surface 111 and a second surface 112 opposite to each other, and a fifth surface 113 and a sixth surface 114 opposite to each other. The fifth surface 113 and the sixth surface 114 are located between the first surface 111 and the second surface 112. The fifth surface 113 and the sixth surface 114 are substantially perpendicular to the first surface 111 and the second surface 112. The length L1 between the first surface 111 and the fifth surface 113 and the sixth surface 114 is greater than the length L2 between the second surface 112 and the fifth surface 113 and the sixth surface 114, and the fifth surface 113 and the sixth surface 114 are symmetrically arranged in an arc shape. The length L1 is in the range of 5 to 20 mm, and is designed according to the size of the actual spinous process interval.

[0097] The first convex portion 12 is substantially trapezoidal and protrudes on one side of the second surface 112, and the end of the first convex portion 12 away from the second surface 112 is narrower. The second convex portion 13 is substantially trapezoidal and protrudes on the other side of the second surface 112 relative to the first convex portion 12, and the end of the second convex portion 13 away from the second surface 112 is narrower. The first concave portion 14 is formed between the second surface 112 and the first convex portion 12 and the second convex portion 13.

[0098] Please refer to the figure Figure 3A , Figure 3B As shown, the surface 123 adjacent to the fifth surface 113 of the first convex portion 12, the surface 124 adjacent to the sixth surface 114 of the first convex portion 12, the surface 131 adjacent to the fifth surface 113 of the second convex portion 13, and the surface 132 adjacent to the sixth surface 114 are all arc-shaped, and their curvatures are the same as those of the fifth surface 113 and the sixth surface 114. Figure 3B As can be seen, the two opposite surfaces 123, 124 of the first protrusion 12 and the two opposite surfaces 131, 132 of the second protrusion 13 respectively form a continuous arc shape with the fifth surface 113 and the sixth surface 114.

[0099] The first convex portion 12 and the second convex portion 13 are protruded from the second surface 112 with the outer diameter of the second surface 112 gradually decreasing. In this embodiment, the first convex portion 12 and the second convex portion 13 are gradually decreasing with the same arc, presenting a bullet shape.

[0100] See also Figure 3A , Figure 3B As shown, the first support member 10 also includes two first grooves 17, which are arranged on the other side of the first body 11 relative to the shaft body 30 and are parallel to the axial direction F1 of the shaft body 30 and are located at two opposite corners of the first surface 111 respectively, and a first chamfer 171 is provided at the intersection of the first groove 17 and the first surface 111.

[0101] See also Figure 2, Figure 4A , Figure 4B As shown, the second supporting member 20 includes a second body 21 , a third protrusion 22 , a fourth protrusion 23 and a second recess 24 .

[0102] The second body 21 has a third surface 211 and a fourth surface 212 opposite to each other, and a seventh surface 213 and an eighth surface 214 opposite to each other. The seventh surface 213 and the eighth surface 214 are located between the third surface 211 and the fourth surface 212. The seventh surface 213 and the eighth surface 214 are substantially perpendicular to the third surface 211 and the fourth surface 212. The length L3 between the third surface 211 and the seventh surface 213 and the eighth surface 214 is greater than the length L4 between the fourth surface 212 and the seventh surface 213 and the eighth surface 214, and the seventh surface 213 and the eighth surface 214 are symmetrically arranged in an arc shape. The length L3 is in the range of 5 to 20 mm, and is designed according to the actual size of the spinous process spacing. The length L3 and Figure 3B The length L1 shown is the same.

[0103] The third convex portion 22 is substantially trapezoidal and protrudes on one side of the fourth surface 212, and the end of the third convex portion 22 away from the fourth surface 212 is narrower. The fourth convex portion 23 is substantially trapezoidal and protrudes on the other side of the fourth surface 212 relative to the third convex portion 22, and the end of the fourth convex portion 23 away from the fourth surface 212 is narrower. The second concave portion 24 is formed between the fourth surface 212 and the third convex portion 22 and the fourth convex portion 23.

[0104] Please refer to the figure Figure 4A , Figure 4B As shown, the surface 223 of the third convex portion 22 adjacent to the seventh surface 213, the surface 224 of the third convex portion 22 adjacent to the eighth surface 214, the surface 231 of the fourth convex portion 23 adjacent to the seventh surface 213, and the surface 232 of the fourth convex portion 23 adjacent to the eighth surface 214 are all in arc shape, and their curvature is the same as that of the seventh surface 213 and the eighth surface 214. Figure 4B As can be seen, the two opposite surfaces 223, 224 of the third protrusion 22 and the two opposite surfaces 231, 232 of the fourth protrusion 23 respectively form a continuous arc shape with the seventh surface 213 and the eighth surface 214.

[0105] The third protrusion 22 and the fourth protrusion 23 are protruded from the fourth surface 212 with the outer diameter of the fourth surface 212 gradually decreasing. In this embodiment, the third protrusion 22 and the fourth protrusion 23 are gradually decreasing with the same arc, presenting a bullet shape.

[0106] See also Figure 4A , Figure 4BAs shown, the second support member 20 also includes two second grooves 27, which are arranged on the other side of the second body 21 relative to the shaft body 30 and are parallel to the axial direction F1 of the shaft body 30 and are located at two opposite corners of the third surface 211 respectively, and a second chamfer 271 is provided at the intersection of the second groove 27 and the third surface 211.

[0107] See also Figure 3A , Figure 3B As shown, on the fifth surface 113 and the sixth surface 114 of the first support member 10, two opposite surfaces 121 and 122 of the first protrusion 12 parallel to the axial direction F1 of the shaft body 20 are respectively provided with a concave hole 18. The concave holes 18 provided on the fifth surface 113 and the sixth surface 114 are respectively located between the second protrusion 13 and the first groove 17.

[0108] See also Figure 4A , Figure 4B As shown, the seventh surface 213 and the eighth surface 214 of the second support member 20 and the two opposite surfaces 221 and 222 of the third protrusion 22 parallel to the axial direction F1 of the shaft body 30 are respectively provided with a concave hole 28. The concave holes 28 provided on the seventh surface 213 and the eighth surface 214 are respectively located between the fourth protrusion 23 and the second groove 27.

[0109] FIG. 3A to FIG. 4B The recessed holes 18 and 28 shown in the figure can be used to bury metal used for visualization during surgery, such as tantalum alloy, titanium alloy, and pure titanium, so as to provide the positions of the first protrusion 12, the second protrusion 13, the third protrusion 22, and the fourth protrusion 23 for identification during surgery.

[0110] See also Figure 5A As shown, the height H1 of the first protrusion 12 protruding from the second surface 112 is greater than the height H2 of the second protrusion 13 protruding from the second surface 112. The height H3 of the third protrusion 22 protruding from the fourth surface 212 is greater than the height H4 of the fourth protrusion 24 protruding from the fourth surface 212.

[0111] In this embodiment, the height H1 of the first protrusion 12 protruding from the second surface 112 is the same as the height H3 of the third protrusion 22 protruding from the fourth surface 212. The height H2 of the second protrusion 13 protruding from the second surface 112 is the same as the height H4 of the fourth protrusion 24 protruding from the fourth surface 212.

[0112] A first angle θ1 is formed between the first protrusion 12 and the second surface 112. A second angle θ2 is formed between the second protrusion 13 and the second surface 112. A third angle θ3 is formed between the third protrusion 22 and the fourth surface 212. A fourth angle θ4 is formed between the fourth protrusion 24 and the fourth surface 212. The first angle θ1, the second angle θ2, the third angle θ3, and the fourth angle θ4 are all greater than 90 degrees. In this embodiment, the first angle θ1 is the same as the third angle θ3, and the second angle θ2 is the same as the fourth angle θ4.

[0113] See also Figures 2 to 5A As shown, the first support member 10 further includes two first pivoting plates 15 and a first engaging recess 16 .

[0114] The first pivoting plate 15 is disposed on the first surface 111 relative to the first protrusion 12. Each first pivoting plate 15 defines a first hole 151. The first pivoting plate 15 has a circular first head 152, and the first head 152 is concentric with the first hole 151.

[0115] A first engaging protrusion 153 and a second engaging protrusion 154 are disposed on a surface of the first head portion 152 . The first engaging protrusion 153 and the second engaging protrusion 154 are distributed on the surface of the first head portion 152 of the first pivot plate 15 in a fan-shaped manner with the first hole 151 as the center.

[0116] The first engaging protrusion 153 and the second engaging protrusion 154 are in the shape of long strips, and their cross sections are in the shape of semicircles. The length direction of the first engaging protrusion 153 and the second engaging protrusion 154 is parallel to the axial direction F1 of the shaft body 30 .

[0117] The first engaging recess 16 is disposed on the first body 11 at one side of the first pivoting plate 15 . The first engaging recess 16 is in an elongated strip shape with a semicircular cross section. The length direction of the first engaging recess 16 is parallel to the axial direction F1 of the shaft 30 .

[0118] The surface of the first body 11 having the first engaging recess 16 is a first concave arc surface 115 .

[0119] See also Figures 2 to 5A As shown, the second supporting member 20 further includes two second pivoting plates 25 and a second engaging recess 26 .

[0120] The second pivoting plate 25 is disposed on the third surface 211 relative to the third protrusion 22. Each second pivoting plate 25 defines a second hole 251. The second pivoting plate 25 has a circular second head 252, and the second head 252 is concentric with the second hole 251.

[0121] A third engaging protrusion 253 and a fourth engaging protrusion 254 are disposed on the surface of one of the second head portions 252. The third engaging protrusion 253 and the fourth engaging protrusion 254 are distributed on the surface of the second head portion 252 of the second pivot plate 25 in a fan-shaped manner with the second hole 251 as the center.

[0122] The third engaging protrusion 253 and the fourth engaging protrusion 254 are in the shape of long strips, and their cross sections are in the shape of semicircles. The length direction of the third engaging protrusion 253 and the fourth engaging protrusion 254 is parallel to the axial direction F1 of the shaft body 30 .

[0123] The second engaging recess 26 is disposed on the second body 21 at one side of the second pivoting plate 25 . The second engaging protrusion 26 is in the shape of an elongated strip, and its cross section is in the shape of a semicircle. The length direction of the second engaging recess 26 is parallel to the axial direction F1 of the shaft body 30 .

[0124] The surface of the second body 21 having the second engaging recess 26 is a second concave arc surface 215 .

[0125] The first concave arc surface 115 and the second head portion 252 of the second pivot plate 25 are in a non-interference fit. The second concave arc surface 215 and the first head portion 152 of the first pivot plate 15 are in a non-interference fit.

[0126] In this embodiment, the first support member 10 has two first pivoting plates 15, and the second support member 20 has two second pivoting plates 25, and the two first pivoting plates 15 and the two second pivoting plates 25 are arranged at intervals. Then, the shaft 30 is inserted into the first hole 151 of the first pivoting plate 15 of the first support member 10 and the second hole 251 of the second pivoting plate 25 of the second support member 20.

[0127] See also Figure 5A , Figure 5B As shown, the first support member 10 and the second support member 20 are roughly symmetrically arranged with respect to the radial direction F2 of the shaft body 30. The first support member 10 and the second support member 20 can pivot relative to each other with the axial direction F1 of the shaft body 30 as the center so that the inter-spinal process support device 100 presents an expanded state and a clamped state. Figure 5A and Figure 5B The interspinal process support device 100 is in a clamped state.

[0128] See also Figure 5A , Figure 5B As shown, the distance D1 between the first protrusion 12 and the second protrusion 13 is in the range of 2 to 10 mm. In this embodiment, the distance D2 between the third protrusion 22 and the fourth protrusion 23 is the same as the distance D1 between the first protrusion 12 and the second protrusion 13, but is not limited thereto. The shapes of the third protrusion 22 and the fourth protrusion 23 and the shapes of the first protrusion 12 and the second protrusion 13 are symmetrically arranged with the radial direction of the shaft body 30 as the center, but are not limited thereto.

[0129] See also Figure 5A , Figure 5B As shown, when the interspinal process support device 100 is stretched Figure 5A In the clamped state shown, the first surface 111 of the first support member 10 is in contact with the third surface 211 of the second support member 20, and each first groove 17 forms an elongated groove 40 with each second groove 27 at the corresponding position. At the same time, combined with the design of the first chamfer 171 and the second chamfer 271, it can be used as a prying point when removing the inter-spinal support device 100. The detailed operation steps will be described later.

[0130] See also Figure 5A As shown, the inter-spinal process support device 100 is in a clamped state, and the first surface 111, the second surface 112, the third surface 211 and the fourth surface 212 are parallel to each other. The first surface 111 is in contact with the third surface 211. The first engaging protrusion 153 is engaged with the second engaging recess 26 and the third engaging protrusion 253 is engaged with the first engaging recess 16. The distance D3 between the second surface 112 and the fourth surface 212 is not limited, for example, in the range of 8 to 16 mm, and is designed according to the size of the actual spinous process interval.

[0131] See also Figure 5B As shown, when the interspinal process support device 100 is in Figure 5B In the clamped state, the fifth surface 113, the seventh surface 213 and the surfaces 131, 123, 231, 223 adjacent to the first convex portion 12, the second convex portion 13 and the third convex portion 22 form an arc. The sixth surface 114, the eighth surface 214 and the surfaces 132, 124, 232, 224 adjacent to the first convex portion 12 and the third convex portion 22 form an arc and are symmetrical to the arc formed by the fifth surface 113, the seventh surface 213 and the surfaces 131, 123, 231, 223 adjacent to the first convex portion 12, the second convex portion 13, and the third convex portion 22.

[0132] See also Figure 5A , Fig. 6A , Figure 6B , which illustrates the transition of the inter-spinal process spreading support device 100 between the clamped state and the unfolded state.

[0133] At Figure 5A In the embodiment, the interspinal process support device 100 is in a clamped state, the first surface 111 of the first support member 10 is in contact with the third surface 211 of the second support member 20, and can be simultaneously referred to Figure 1 Status shown.

[0134] At Fig. 6AIn the embodiment, the first support member 10 and the second support member 20 are flipped with the axis of the shaft body 30 as the center, the first surface 111 of the first support member 10 and the third surface 211 of the second support member 20 are separated from each other, and the first protrusion 12 of the first support member 10 and the third protrusion 22 of the second support member 20 are close to each other.

[0135] At Figure 6B The first support member 10 and the second support member 20 continue to flip around the axis of the shaft body 30 until the first convex portion 12 of the first support member 10 and the third convex portion 22 of the second support member 20 contact each other, the second engaging convex portion 154 engages with the second engaging concave portion 26 and the fourth engaging convex portion 253 engages with the first engaging concave portion 16, and the support device 100 is stretched open between the spinous processes and is in an unfolded state. Figure 7 Status shown.

[0136] See also Figure 6B As shown, a fifth angle θ5 is formed between the first surface 111 of the first support member 10 and the third surface 211 of the second support member 20 . The size of the fifth angle θ5 is not limited and can be designed according to actual needs, for example, in the range of 100 to 180 degrees.

[0137] By virtue of the characteristic that the first support member 10 and the second support member 20 are turned around the shaft 30 to switch the inter-spinal process support device 100 between the clamped state and the unfolded state, the inter-spinal process support device 100 can be placed between the spinous processes.

[0138] See also Figure 6B , FIG. 8A to FIG. 8C , Fig. 9 As shown, a process 300 of a method for supporting inter-spinal process spacing using the inter-spinal process spacing support device 100 of the present invention is described, comprising the following steps:

[0139] Step 302: The first support member 10 and the second support member 20 are pivoted relative to each other with the axis of the shaft body 30 as the center, so that the first protrusion 12 contacts the third protrusion 22, and the support device 100 is stretched open between the ridges to be in an unfolded state, as shown in FIG. Figure 6B Status shown.

[0140] Step 304: Place the first convex portion 12 and the third convex portion 22 of the inter-spinal process support device 100 from one side R of the two spinous processes 200A and 200B between the two spinous processes 200A and 200B, as shown in FIG. Fig. 8A shown.

[0141] Step 306: Push the inter-spinal process support device 100 to allow the first protrusion 12 and the third protrusion 22 to pass between the two spinous processes 200A and 200B and move to the other side L of the two spinous processes 200A and 200B. The first support member 10 and the second support member 20 are relatively pivoted and close to each other with the axis of the shaft body 30 as the center. Figure 8B shown.

[0142] When the inter-spinal process support device 100 is pushed from one side R of the two spinous processes 200A, 200B to the other side L of the two spinous processes 200A, 200B, the second protrusion 13 and the fourth protrusion 23 will be mutually abutted in accordance with the contours of the two spinous processes 200A, 200B, and the first protrusion 12 and the third protrusion 22 will be separated at the same time.

[0143] Step 308: The first surface 111 of the first support member 10 is in contact with the third surface 211 of the second support member 20, and the support device 100 is stretched open between the vertebrae to be in a clamped state, so that the first convex portion 12 and the third convex portion 22, the second convex portion 13 and the fourth convex portion 23 are respectively located on the opposite sides L and R of the two vertebrae 200A and 200B, and the first concave portion 14 and the second concave portion 24 are located between the two vertebrae 200A and 200B. Figure 8C shown.

[0144] In this way, the inter-spinal process support device 100 can be positioned between the two spinous processes 200A, 200B. The first recess 14 and the second recess 24 provide support for the two spinous processes 200A, 200B. The first protrusion 12 and the third protrusion 22, the second protrusion 13 and the fourth protrusion 23 can prevent the inter-spinal process support device 100 from moving.

[0145] See also Fig. 10A and Fig. 10B As shown, when the inter-spinal process spreading support device 100 is to be removed from between the two spinous processes 200A, 200B, a long tool 400 may be used.

[0146] like Fig. 10A As shown, the tool 400 is inserted into the elongated groove 40 in a direction F1 substantially parallel to the axial direction of the shaft body 30 to form a loose fit. At this time, the state of the support device 100 being spread open between the vertebrae is as shown in FIG. Fig. 8A Then, as Fig. 10B As shown, the first support member 10 and the second support member 20 are pivoted and separated relative to each other with the axis of the shaft body 30 as the center by means of the swing tool 400. At this time, the state of the support device 100 between the spinous processes is as shown in FIG. Figure 8B As shown. In this way, the interspinal process support device 100 can be Figure 8C The clamping state is converted to Figure 8B Then to Fig. 8A state, and then the interspinal process spreading support device 100 can be removed.

[0147] See also Fig.11A , Fig. 11B , Fig. 11C In the illustrated embodiment, the inter-spinal process spreading support device 100A comprises a first support member 10A, a second support member 20A and an axle 30A. Fig.11A , Fig. 11B , Fig. 11C The appearance, connection method and actuation method of the first support member 10A, the second support member 20A and the shaft body 30A of the embodiment are similar to Figure 1 The embodiments shown are substantially the same and have substantially the same appearance. The main differences include: Fig.11A , Fig. 11B , Fig. 11C The second surface 112A of the first support member 10A is provided with third chamfers 116A and 117A at the junction with the fifth surface 113A and the sixth surface 114A; and the fourth chamfers 216A and 217A are provided at the junction with the fourth surface 212A of the second support member 20A, the seventh surface 213A and the eighth surface 214A. In general, the third chamfers 116A and 117A with the first concave portion 14A, and the fourth chamfers 216A and 217A with the second concave portion 24A are shaped like a "saddle".

[0148] See also Fig. 12A , Fig. 12B , Fig. 12C In the illustrated embodiment, the inter-spinal process spreading support device 100B comprises a first support member 10B, a second support member 20B and an axle 30B. Fig. 12A , Fig. 12B , Fig. 12C The appearance, connection method and actuation method of the first support member 10B, the second support member 20B and the shaft body 30B of the embodiment are similar to Figure 1 The embodiments shown are substantially the same and have substantially the same appearance. The main differences include: Fig. 12A , Fig. 12B , Fig. 12C The second surface 112A of the first support member 10B and the first and second protrusions 12B and 13B form a smooth "saddle shape", and the fourth surface 212B of the second support member 20B and the third and fourth protrusions 22B and 23B form a smooth "saddle shape".

[0149] The present invention Figure 1 , Fig.11A , Fig. 12A The difference between the structures of the three embodiments shown is that the structures of the first recess and the second recess are slightly different, and the purpose is to select a suitable structure according to the size and interval of the actual spinous processes.

[0150] In addition, the present invention Figure 1 , Fig.11A , Fig. 12AThe first support members 10, 10A, 10B and the second support members 20, 20A, 20B of the three inter-spinal process support devices 100, 100A, 100B shown are all symmetrically arranged in the radial direction of the shaft body 30, 30A, 30B. In addition, the first support members 10, 10A, 10B and the second support members 20, 20A, 20B of the inter-spinal process support devices 100, 100A, 100B can be matched with each other to form a structure in which the first support members and the second support members are asymmetrically arranged in the radial direction of the shaft body, so as to be suitable for asymmetric upper and lower spinous processes.

[0151] See also Figures 13A to 13C As shown, Fig.13A The inter-spinal process spreading support device 100C is composed of a first support member 10 and a second support member 20B, which are arranged asymmetrically in the radial direction of the shaft body 30; Fig. 13B The inter-spinal process spreading support device 100D is composed of a first support member 10 and a second support member 20A, which are arranged asymmetrically in the radial direction of the shaft body 30; Fig. 13C The inter-spinal process spreading support device 100E is composed of a first support member 10A and a second support member 20B, which are arranged asymmetrically in the radial direction of the shaft body 30.

[0152] However, no matter Figure 1 , Fig.11A , Fig. 12A , Figures 13A to 13C The operation of any of the interspinal process support devices 100, 100A, 100B, 100C, 100D, 100E shown in the figure is the same, such as FIG. 8A to FIG. 8C A schematic diagram of the continuous action of the device installed between the spinous processes, and FIG. 10A to FIG. 10B This is a schematic diagram of the continuous action of prying open with a tool.

[0153] In summary, the interspinal process support device provided by the present invention utilizes a first support member and a second support member that can pivot with each other. It has a simple structure, is easy to operate, and is simple to install and remove. It can also retain the spinous process ligaments, maintain the stability of the cone, greatly reduce the risk of bleeding and infection in patients, and provide interspinal process support for patients.

[0154] The above description is only illustrative rather than restrictive of the present invention. Those skilled in the art will understand that many modifications, changes or equivalents may be made without departing from the spirit and scope defined by the claims, but all will fall within the scope of protection of the present invention.

Claims

1. A device for supporting the opening of spinous processes, characterized in that: It comprises a first support member, a second support member and an axle, wherein: The first support member comprises: A first body having a first surface and a second surface opposite to each other; a first protrusion, protrudingly disposed on one side of the second surface; a second protrusion, protruding from the first protrusion and disposed on the other side of the second surface; a first concave portion formed between the second surface and the first convex portion and the second convex portion; At least one first pivot plate is disposed on the first surface relative to the first protrusion, each of the first pivot plates is provided with a first hole, wherein a first engaging protrusion and a second engaging protrusion are provided on the surface of at least one of the first pivot plates, and the first engaging protrusion and the second engaging protrusion are distributed on the surface of the first pivot plate in a fan shape with the first hole as the center; At least one first engaging recess is disposed on the first body at one side of the first pivot plate; The second support member comprises: A second body having a third surface and a fourth surface opposite to each other; a third protrusion, protrudingly disposed on one side of the fourth surface; a fourth protrusion, protrudingly disposed on the other side of the fourth surface relative to the third protrusion; a second concave portion formed between the fourth surface and the third convex portion and the fourth convex portion; The shaft body is pivotally arranged on the first support member and the second support member, and the first support member and the second support member are relatively pivoted with the axis center of the shaft body as the center of the circle, so that the inter-spinal process support device is in an expanded state and a clamped state; when the inter-spinal process support device is in the expanded state, the first convex part contacts the third convex part; when the inter-spinal process support device is in the clamped state, the first surface contacts the third surface; At least one second pivot plate is disposed on the third surface relative to the third protrusion, each of the second pivot plates is provided with a second hole, wherein a third engaging protrusion and a fourth engaging protrusion are provided on the surface of at least one of the second pivot plates, and the third engaging protrusion and the fourth engaging protrusion are distributed on the surface of the second pivot plate in a fan shape with the second hole as the center; At least one second engaging recess is disposed on the second body at one side of the second pivot plate; Among them, when the inter-spinal process support device is in the clamped state, the first engaging protrusion is engaged with the second engaging recess and the third engaging protrusion is engaged with the first engaging recess; when the inter-spinal process support device is in the expanded state, the first protrusion and the third protrusion are in contact with each other, the second engaging protrusion is engaged with the second engaging recess and the fourth engaging protrusion is engaged with the first engaging recess.

2. The interspinal process spreading support device according to claim 1, characterized in that: The first engaging protrusion, the second engaging protrusion, the third engaging protrusion and the fourth engaging protrusion are in the shape of long strips, and their cross sections are in the shape of semicircles. The length directions of the first engaging protrusion, the second engaging protrusion, the third engaging protrusion and the fourth engaging protrusion are parallel to the axial direction of the shaft body, and The first engaging recess and the second engaging recess are in the shape of long strips, and their cross sections are in the shape of semicircles. The length directions of the first engaging recess and the second engaging recess are parallel to the axial direction of the shaft body.

3. The interspinal process spreading support device according to claim 1, characterized in that: The first pivot plate has a circular first head portion, the first head portion is concentric with the first hole, and the first engaging protrusion and the second engaging protrusion are disposed on a surface of at least one of the first heads; and The second pivot plate has a circular second head portion, the second head portion is concentric with the second hole, and the third engaging protrusion and the fourth engaging protrusion are disposed on a surface of at least one of the second heads portion.

4. The interspinal process spreading support device according to claim 1, characterized in that: The first support member has two first pivotal plates, and the second support member has two second pivotal plates. The two first pivotal plates are spaced apart from the two second pivotal plates.

5. The interspinal process spreading support device according to claim 1, characterized in that: The first support member further includes two first grooves, which are arranged on the other side of the first body relative to the shaft body and are parallel to the axial direction of the shaft body and are respectively located at two opposite corners of the first surface; The second support member further includes two second grooves, which are arranged on the other side of the second body relative to the shaft body and are parallel to the axial direction of the shaft body and are respectively located at two opposite corners of the third surface; When the inter-spinal process support device is in the clamped state, each of the first grooves respectively forms an elongated groove with each of the second grooves at the corresponding position, and each of the elongated grooves can be inserted into a tool parallel to the axial direction of the shaft body to form a loose fit, and by swinging the tool, the first support member and the second support member are pivotally separated relative to each other with the axis of the shaft body as the center of the circle, so that the inter-spinal process support device is in the expanded state.

6. The interspinal process spreading support device according to claim 1, characterized in that: The height of the first protrusion protruding from the second surface is greater than the height of the second protrusion protruding from the second surface, and the height of the third protrusion protruding from the fourth surface is greater than the height of the fourth protrusion protruding from the fourth surface.

7. The interspinal process spreading support device according to claim 1, characterized in that: The height of the first protrusion protruding from the second surface is the same as the height of the third protrusion protruding from the fourth surface, and the height of the second protrusion protruding from the second surface is the same as the height of the fourth protrusion protruding from the fourth surface.

8. The interspinal process spreading support device according to claim 1, characterized in that: There is a first angle between the first protrusion and the second surface, a second angle between the second protrusion and the second surface, a third angle between the third protrusion and the fourth surface, and a fourth angle between the fourth protrusion and the fourth surface. The first angle, the second angle, the third angle and the fourth angle are greater than 90 degrees.

9. The interspinal process spreading support device according to claim 8, characterized in that: The first angle is the same as the third angle, and the second angle is the same as the fourth angle.

10. The interspinal process spreading support device according to claim 1, characterized in that: When the inter-spinal process support device is in the clamped state, the first surface, the second surface, the third surface and the fourth surface are parallel to each other.

11. The interspinal process spreading support device according to claim 1, characterized in that: The first convex portion and the second convex portion are protruded from the second surface with the outer diameter gradually reduced, and the third convex portion and the fourth convex portion are protruded from the fourth surface with the outer diameter gradually reduced.

12. The interspinal process spreading support device according to claim 1, characterized in that: The distance between the first convex portion and the second convex portion is in the range of 2 to 10 mm, and the distance between the third convex portion and the fourth convex portion is the same as the distance between the first convex portion and the second convex portion.

13. The interspinal process spreading support device according to claim 5, characterized in that: The first body has a fifth surface and a sixth surface opposite to each other, the fifth surface and the sixth surface are located between the first surface and the second surface, and the fifth surface and the sixth surface are perpendicular to the first surface and the second surface; the second body has a seventh surface and an eighth surface opposite to each other, the seventh surface and the eighth surface are located between the third surface and the fourth surface, and the seventh surface and the eighth surface are perpendicular to the third surface and the fourth surface.

14. The interspinal process spreading support device according to claim 13, characterized in that: The fifth surface, the sixth surface, the seventh surface, the eighth surface, the two opposite surfaces of the first protrusion parallel to the axial direction of the shaft body, and the two opposite surfaces of the third protrusion parallel to the axial direction of the shaft body are respectively provided with a concave hole to bury the metal used for development.

15. The interspinal process spreading support device according to claim 14, characterized in that: The concave holes arranged on the fifth surface and the sixth surface are respectively located between the second convex portion and the first concave groove; the concave holes arranged on the seventh surface and the eighth surface are respectively located between the fourth convex portion and the second concave groove.

16. The interspinal process spreading support device according to claim 14, characterized in that: The metal used for development is one of tantalum alloy, titanium alloy and pure titanium.

17. The interspinal process spreading support device according to claim 13, characterized in that: A third chamfer is provided at the joints between the second surface of the first support member and the fifth surface and the sixth surface, and a fourth chamfer is provided at the joints between the fourth surface of the second support member and the seventh surface and the eighth surface; the shape of the third chamfer and the first recess, and the shape of the fourth chamfer and the second recess are both saddle-shaped.

18. The interspinal process spreading support device according to claim 13, characterized in that: There is a distance between the fifth surface and the sixth surface, and between the seventh surface and the eighth surface. When the inter-spinal process support device is in the clamping state, the fifth surface and the seventh surface form a smooth surface, and the sixth surface and the eighth surface form a smooth surface. The distance is in the range of 5 to 20 mm.

19. The interspinal process spreading support device according to claim 1, characterized in that: When the inter-spinal process spreading support device is in the expanded state, a fifth angle is formed between the first surface and the third surface, and the fifth angle is in the range of 100 to 180 degrees.

20. The interspinal process spreading support device according to claim 1, characterized in that: The second surface of the first support member, the first convex portion and the second convex portion form a smooth saddle shape; the fourth surface of the second support member, the third convex portion and the fourth convex portion form a smooth saddle shape.

21. The interspinal process spreading support device according to claim 1, characterized in that: The first protrusion is arranged in a trapezoidal protrusion on one side of the second surface, and the end of the first protrusion away from the second surface is narrower; the second protrusion is arranged in a trapezoidal protrusion on the other side of the second surface relative to the first protrusion, and the end of the second protrusion away from the second surface is narrower; the third protrusion is arranged in a trapezoidal protrusion on one side of the fourth surface, and the end of the third protrusion away from the fourth surface is narrower; the fourth protrusion is arranged in a trapezoidal protrusion on the other side of the fourth surface relative to the third protrusion, and the end of the fourth protrusion away from the fourth surface is narrower.

22. The interspinal process spreading support device according to claim 1, characterized in that: The first support member and the second support member are symmetrically or asymmetrically arranged with respect to the radial direction of the shaft.

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