TWM620443U - Spinous process expanding and supporting device - Google Patents

Abstract

A spinous process expanding and supporting device is provided, the device includes: a first supporter has a first body, a first protrude, a second protrude and a first concave; a second supporter has a second body, a third protrude, a forth protrude and a second concave; a shaft pivotally engages with first supporter and second supporter to make first supporter and second supporter take shaft as a center and rotate relatively. Insert first protrude and third protrude in between two spinouses while spinous process expanding and supporting device is on expanding status, then rotate first supporter and second supporter to transform spinous process expanding and supporting device to clamping status, and first protrude and third protrude, second protrude and forth protrude locate on opposite sides of said two spinouses, and first concave and second concave locate in between said two spinouses.

Description

Spreading support device between vertebral processes

This creation relates to the field of medical technology, in particular to a supporting device for spreading between the spinal processes.

For patients with spinal disorders, it is easy to produce lesions and atrophy in the intervertebral discs, resulting in the shrinkage of the spinal process space and compression of the spinal nerves, resulting in numbness or pain.

In order to solve the above problems, conventional treatment methods include implanting supports, pedicle screws or artificial intervertebral disc fillers. The purpose is to raise the spinal process and open the nerve foramen gap to reduce or eliminate the discomfort of the patient.

As far as the currently used supports are concerned, some of the supports must destroy the spinal ligament during installation, and there are common defects such as complex structure, difficult operation, difficult installation and removal, etc., which results in the need to spend a long time in the operation, increase patient bleeding and Risk of infection.

Based on this, how to develop an "interspinous support device" that is simple in structure, easy to operate, simple in installation and removal, and can retain the spinal ligament and maintain the stability of the cone is an urgent issue for those in the relevant technical fields. .

In one embodiment, the present invention proposes an inter-spine support device, which includes: a first support, including: a first body, which has a first surface and a second surface opposite to each other; and a second surface. A convex portion protrudingly arranged on one side of the second surface; a second convex portion protrudingly arranged on the other side of the second surface relative to the first convex portion; a first concave portion formed on the second surface and the first surface Between the convex portion and the second convex portion; a second supporting member, including: a second body having a third surface and a fourth surface opposite to each other; a third convex portion protrudingly disposed on the fourth surface One side; a fourth convex portion protruding from the third convex portion on the other side of the fourth surface; a second concave portion formed between the fourth surface and the third convex portion and the fourth convex portion; a shaft The body is pivoted on the first support and the second support. The first support and the second support are relatively pivoted with the shaft center of the shaft as the center, so that the inter-spine support device presents an unfolded state and is clamped State: When the inter-spine support device is in an unfolded state, the first convex part is in contact with the third convex part; when the inter-spine support device is in a clamped state, the first surface is in contact with the third surface.

In one embodiment, this creation proposes an inter-spine expansion support method, which includes: (a) preparing an inter-spine expansion support device, which includes: a first support member, including: a first body, It has a first surface and a second surface opposite to each other; a first convex portion protrudingly arranged on one side of the second surface; A second convex portion protruding from the first convex portion 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 ; A second supporting member, including: a second body, which has a third surface and a fourth surface; a third convex portion protrudingly arranged on one side of the fourth surface; a fourth convex portion , With respect to the third convex portion, protrudingly provided on the other side of the fourth surface; a second concave portion formed between the fourth surface and the third convex portion and the fourth convex portion; a shaft body, pivot Are provided on the first support member and the second support member, the first support member and the second support member pivot relatively with the axis of the shaft as the center; (b) rotating the first support member and the second support member Two supporting members make the first convex portion and the third convex portion contact, the first supporting member and the second supporting member are in an expanded state; (c) the first supporting member and the second supporting member The first protrusion and the third protrusion are placed between the two ridges; (d) rotating the first support and the second support so that the first surface and the third surface are in contact, and the first support is in contact with the third surface The second support is in a sandwiched state; and (e) the first convex portion and the third convex portion are located on one side of the two ridges, and the second convex portion and the fourth convex portion are located on the two ridges On the other side of the protrusion, the first recess and the second recess are located between the two ridges.

100, 100A, 100B, 100C, 100D, 100E: support device between vertebral processes

10, 10A, 10B: the first support

11: The first body

111: The first side

112, 112A, 112B: second side

113, 113A: Fifth side

114, 114A: Sixth side

115: The first concave arc

116A, 117A: third chamfer

12, 12B: the first convex part

121, 122: Opposite sides

13, 13B: second convex part

123,124,131,132: noodles

14, 14A, 14B: the first recess

15: The first pivot piece

151: First Hole

152: first head

153: The first engagement convex part

154: The second engagement protrusion

16: The first engagement recess

17: The first groove

171: first chamfer

18: concave hole

20, 20A, 20B: second support

21: The second body

211: The Third Side

212, 212A, 212B: Fourth side

213,213A: The seventh side

214,214A: Eighth side

215: The second concave arc

216A, 217A: fourth chamfer

22, 22B: third convex part

221,222: Opposite sides

23, 23B: Fourth convex part

223,224,231,232: surface

24, 24A, 24B: second recess

25: The second pivot piece

251: Second Hole

252: second head

253: Third engagement convex part

254: The fourth engagement protrusion

26: The second engagement recess

27: second groove

271: second chamfer

28: concave hole

30, 30A, 30B: shaft

40: Long groove

200A, 200B: spine

300: The process of the support method for spreading between the spine processes

302~308: Steps in the process of the method of spreading support between the spine processes

400: Tools

D1, D2, D3: distance

F1: Axial

H1, H2, H3, H4: height

L1, L2, L3, L4: length

R, L: opposite sides

θ1: The first included angle

θ2: second included angle

θ3: The third included angle

θ4: The fourth included angle

θ5: Fifth included angle

Figure 1 is a schematic diagram of the combined three-dimensional structure of an embodiment of the creation.

FIG. 2 is an exploded three-dimensional structure diagram of the embodiment in FIG. 1.

FIG. 3A is a schematic diagram of the structure of the first supporting member in the front view of the embodiment in FIG. 1; FIG.

Fig. 3B is a schematic diagram of the structure on the right side of Fig. 3A.

FIG. 4A is a schematic structural diagram of the second supporting member in the front view of the embodiment in FIG. 1; FIG.

Fig. 4B is a schematic diagram of the structure on the right side of Fig. 4A.

FIG. 5A is a schematic diagram of the combined front view structure of the embodiment in FIG. 1.

Fig. 5B is a schematic diagram of the structure on the right side of Fig. 5A.

6A to 6B are schematic diagrams of the continuous action of the embodiment in FIG. 1 changing from the clamped state of FIG. 5A to the unfolded state.

Fig. 7 is a schematic diagram of the three-dimensional structure of the embodiment of Fig. 1 in an unfolded state.

8A to 8C are schematic diagrams of the continuous action of the embodiment in FIG. 1 installed between the spinal processes.

Fig. 9 is the flow of the method for spreading and supporting between the spine processes using the device for spreading and supporting between the spine processes of this creation.

10A to 10B are schematic diagrams of continuous actions of prying open the embodiment of FIG. 1 with a tool.

FIG. 11 is a schematic diagram of the combined three-dimensional structure of another embodiment of the creation.

FIG. 11A is a schematic diagram of the front side structure of the combination of the embodiment in FIG. 11.

FIG. 11B is a schematic diagram of the structure on the right side of the embodiment in FIG. 11.

FIG. 12 is a schematic diagram of the combined three-dimensional structure of another embodiment of the creation.

FIG. 12A is a schematic diagram of the front side structure of the combination of the embodiment in FIG. 12.

FIG. 12B is a schematic diagram of the right side structure of the embodiment in FIG. 12.

FIGS. 13A to 13C are schematic diagrams of the combined front side structure of the first supporting member and the second supporting member of the embodiments in FIGS. 1, 11, and 12 that are created.

Please refer to FIG. 1 and FIG. 2, an inter-spine support device 100 provided by the present creation includes a first support 10, a second support 20 and a shaft 30. The materials of the first support 10, the second support 20 and the shaft body 30 are not limited, for example, they can be biocompatible metal or plastic. The shaft 30 has an axial direction F1.

Please refer to FIG. 2, FIG. 3A and FIG. 3B, the first support member 10 includes a first body 11, a first convex portion 12, a second convex portion 13 and a first concave portion 14.

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 of the first surface 111 between the fifth surface 113 and the sixth surface 114 is greater than the length L2 of the second surface 112 between the fifth surface 113 and the sixth surface 114, and the fifth surface 113 and the sixth surface 114 are present Arc-shaped symmetrical setting. The size of the length L1 is in the range of 5-20 mm, and is designed according to the size of the actual spine interval.

The first convex portion 12 is protrudingly disposed on one side of the second surface 112 in a generally trapezoidal shape, and an end of the first convex portion 12 away from the second surface 112 is narrower. The second convex portion 13 is disposed on the other side of the second surface 112 in a generally trapezoidal shape with respect 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.

Please refer to FIGS. 3A and 3B, the first convex portion 12 is adjacent to the fifth surface 113 on the surface 123, the first convex portion 12 and the sixth surface 114 are adjacent to the surface 124, the second convex portion 13 and the first The surface 131 adjacent to the five surfaces 113 and the surface 132 adjacent to the second convex portion 13 and the sixth surface 114 are all arc-shaped, and the arc is the same as that of the fifth surface 113 and the sixth surface 114. From Fig. 3B, the first convex part The two opposite surfaces 123 and 124 of 12 and the two surfaces 131 and 132 opposite to the second convex portion 13 form a continuous arc with the fifth surface 113 and the sixth surface 114, respectively.

The first convex portion 12 and the second convex portion 13 are protruded from the second surface 112 on the second surface 112 with a tapered outer diameter. In this embodiment, the first convex portion 12 and the second convex portion 13 are tapered in the same arc, showing a bullet shape.

Please refer to FIG. 3A and FIG. 3B. The first support 10 further includes two first grooves 17, and the two first grooves 17 are disposed on the other side of the first body 11 relative to the shaft body 30 and are parallel to the shaft body. The axial direction F1 of 30 is respectively located at two opposite corners of the first surface 111, and a first chamfer 171 is provided at the intersection of the first groove 17 and the first surface 111.

Please refer to FIG. 2, FIG. 4A and FIG. 4B, the second support member 20 includes a second body 21, a third convex portion 22, a fourth convex portion 23 and a second concave portion 24.

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 of the third surface 211 between the seventh surface 213 and the eighth surface 214 is greater than the length L4 of the fourth surface 212 between the seventh surface 213 and the eighth surface 214, and the seventh surface 213 and the eighth surface 214 are present Arc-shaped symmetrical setting. The size of the length L3 is in the range of 5-20 mm, and is designed according to the size of the actual spine interval. The length L3 is the same as the length L1 shown in FIG. 3B.

The third convex portion 22 is protrudingly disposed on one side of the fourth surface 212 in a generally trapezoidal shape, and an end of the third convex portion 22 away from the fourth surface 212 is narrower. The fourth convex portion 23 is disposed on the other side of the fourth surface 212 in a generally trapezoidal shape with respect to the third convex portion 22, and the fourth convex portion 23 is away from the fourth surface 212. One end 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.

Please refer to FIGS. 4A and 4B, the surface 223 where the third convex portion 22 is adjacent to the seventh surface 213, the surface 224 where the third convex portion 22 is adjacent to the eighth surface 214, the fourth convex portion 23 and the first The surface 231 adjacent to the seven surfaces 213 and the surface 232 adjacent to the fourth convex portion 23 and the eighth surface 214 are all arc-shaped, and the arc is the same as the seventh surface 213 and the eighth surface 214. From FIG. 4B, the two opposite surfaces 223 and 224 of the third convex portion 22 and the two opposite surfaces 231 and 232 of the fourth convex portion 23 form a continuous arc with the seventh surface 213 and the eighth surface 214, respectively.

The third convex portion 22 and the fourth convex portion 23 are protruded on the fourth surface 212 from the fourth surface 212 with a tapered outer diameter. In this embodiment, the third convex portion 22 and the fourth convex portion 23 are tapered in the same arc, showing a bullet shape.

Please refer to FIGS. 4A and 4B. The second support 20 further includes two second grooves 27. The two second grooves 27 are disposed on the other side of the second body 21 relative to the shaft body 30 and are parallel to the shaft body. The axial direction F1 of 30 is respectively located at two opposite corners of the third surface 211, and a second chamfer 271 is provided at the intersection of the second groove 27 and the third surface 211.

Please refer to FIGS. 3A and 3B. On the fifth surface 113 and the sixth surface 114 of the first support member 10, the first convex portion 12 is parallel to the axial direction F1 of the shaft 30 on the opposite surfaces 121 and 122, respectively.槽孔18。 Recessed hole 18. The concave holes 18 provided on the fifth surface 113 and the sixth surface 114 are respectively located between the second convex portion 13 and the first groove 17.

Please refer to FIGS. 4A and 4B, the seventh surface 213 and the eighth surface 214 of the second support member 20, and the third convex portion 22 is parallel to the two opposite surfaces 221 and 222 of the axial direction F1 of the shaft body 30. Don't have a recessed hole 28. The concave holes 28 provided on the seventh surface 213 and the eighth surface 214 are respectively located between the fourth convex portion 23 and the second groove 27.

The recessed holes 18, 28 shown in FIGS. 3A to 4B can be used to embed the metal for imaging during the operation, such as tantalum alloy, titanium alloy, and pure titanium, to provide identification of the first protrusion 12, during the operation The positions of the second convex portion 13, the third convex portion 22 and the fourth convex portion 23.

Please refer to FIG. 5A, 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 23 protruding from the fourth surface 212.

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 23 protruding from the fourth surface 212.

There is a first included angle θ1 between the first convex portion 12 and the second surface 112. There is a second included angle θ2 between the second convex portion 13 and the second surface 112. There is a third included angle θ3 between the third convex portion 22 and the fourth surface 212. There is a fourth included angle θ4 between the fourth convex portion 23 and the fourth surface 212. The first included angle θ1, the second included angle θ2, the third included angle and θ3, and the fourth included angle θ4 are all greater than 90 degrees. In this embodiment, the first included angle θ1 is the same as the third included angle θ3, and the second included angle θ2 is the same as the fourth included angle θ4.

Please refer to FIGS. 2 to 5A, the first supporting member 10 further includes two first pivotal pieces 15 and a first engaging recess 16.

The first pivotal piece 15 is disposed on the first surface 111 relative to the first convex portion 12. Each first pivotal piece 15 is provided with a first hole 151. The first pivot piece 15 has a circular first head 152, and the first head 152 is concentric with the first hole 151.

One of the first head portions 152 is provided with a first engaging protrusion 153 and a second engaging protrusion 154 on the surface. The first engaging protrusion 153 and the second engaging protrusion 154 are centered around the first hole 151 The fan shape is distributed on the surface of the first head 152 of the first pivoting piece 15.

The first engaging convex portion 153 and the second engaging convex portion 154 are elongated, and their cross-sections are semicircular. The longitudinal directions of the first engagement protrusion 153 and the second engagement protrusion 154 are parallel to the axial direction F1 of the shaft body 30.

The first engaging recess 16 is provided on the first body 11 on one side of the first pivoting piece 15. The first engaging recess 16 is elongated and its cross section is semicircular. The first engaging recess 16 The length direction of the shaft is parallel to the axial direction F1 of the shaft body 30.

The surface of the first body 11 with the first engaging recess 16 is a first concave arc surface 115.

Please refer to FIGS. 2 to 5A, the second supporting member 20 further includes two second pivotal pieces 25 and a second engaging recess 26.

The second pivotal piece 25 is disposed on the third surface 211 relative to the third convex portion 22. Each second pivotal piece 25 defines a second hole 251. The second pivoting piece 25 has a round second head 252, and the second head 252 is concentric with the second hole 251.

The surface of one of the second head portions 252 is provided with a third engaging protrusion 253 and a fourth engaging protrusion 254. The third engaging protrusion 253 and the fourth engaging protrusion 254 are distributed on the surface of the second head 252 of the second pivoting piece 25 in a fan shape with the second hole 251 as the center.

The third engaging protrusion 253 and the fourth engaging protrusion 254 are elongated, and the cross section of the third engaging protrusion 254 is semicircular. The longitudinal directions of the third engagement protrusion 253 and the fourth engagement protrusion 254 are parallel to the axial direction F1 of the shaft body 30.

The second engaging recess 26 is disposed on the second body 21 on one side of the second pivoting piece 25. The second engaging recess 26 is elongated, and its cross section is semicircular. The longitudinal direction of the second engaging recess 26 is parallel to the axial direction F1 of the shaft 30.

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

The first concave arc surface 115 and the second head 252 of the second pivoting piece 25 are in a non-interference fit. The second concave arc surface 215 is in a non-interference fit with the first head 152 of the first pivoting piece 15.

In this embodiment, the first supporting member 10 has two first pivoting pieces 15, the second supporting member 20 has two second pivoting pieces 25, and the two first pivoting pieces 15 are spaced apart from the two second pivoting pieces 25 set up. Then, the shaft 30 is inserted through the first hole 151 of the first pivoting piece 15 of the first support 10 and the second hole 251 of the second pivoting piece 25 of the second support 20.

Please refer to FIG. 5A and FIG. 5B. The first support 10 and the second support 20 are arranged substantially symmetrically in the radial direction F2 of the shaft 30. The first support 10 and the second support 20 can be arranged on the axis of the shaft 30. The relative pivoting toward F1 is the center of the circle, so that the inter-spine support device 100 presents an unfolded state and a clamped state. The inter-spine spreading support device 100 shown in FIGS. 5A and 5B is in a clamped state.

Please refer to FIG. 5A and FIG. 5B. The distance D1 between the first convex portion 12 and the second convex portion 13 is in the range of 2-10 millimeters (mm). In this embodiment, the distance D2 between the third convex portion 22 and the fourth convex portion 23 is the same as the distance D1 between the first convex portion 12 and the second convex portion 13, but it is not limited to this. The shapes of the third convex portion 22 and the fourth convex portion 23 and the shapes of the first convex portion 12 and the second convex portion 13 are symmetrically arranged with the radial direction of the shaft 30 as the center, but are not limited thereto.

Please refer to FIG. 5A and FIG. 5B. When the interspinous process expansion support device 100 is in the clamped state shown in FIG. 5A, the first surface 111 of the first support member 10 and the second support member 20 are In contact with the third surface 211, each of the first grooves 17 and each of the second grooves 27 at the corresponding positions form a long groove 40. At the same time, it can be matched with the design of the first chamfer 171 and the second chamfer 271. As a prying point when removing the support device 100 between the spinal processes, the detailed operation steps will be described later.

Please refer to FIG. 5A, the inter-spine spreading 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 8-16 mm, and is designed according to the size of the actual ridge interval.

Please refer to FIG. 5B, when the inter-spine spreading support device 100 is in the clamping state of FIG. 5B, the fifth surface 113, the seventh surface 213 and the first convex portion 12, the second convex portion 13 and the third convex portion 22 adjacent surfaces 131, 123, 231, 223 form a circular arc. The sixth surface 114, the eighth surface 214 and the surfaces 132, 124, 232, and 224 adjacent to the first convex portion 12 and the third convex portion 22 form an arc and are connected to the aforementioned fifth surface 113, seventh surface 213, and The adjacent surfaces 131, 123, 231, and 223 of a convex portion 12, a second convex portion 13, and a third convex portion 22 form a circular arc symmetrical.

Please refer to FIG. 5A, FIG. 6A, and FIG. 6B to illustrate the transition of the inter-spine support device 100 between the clamped state and the expanded state.

In FIG. 5A, the inter-spine support device 100 is in a clamped state, and the first surface 111 of the first support member 10 is in contact with the third surface 211 of the second support member 20. Refer to the state shown in FIG. 1 at the same time. .

In FIG. 6A, the first support member 10 and the second support member 20 are turned around with the axis of the shaft body 30 as the center, and the first surface 111 of the first support member 10 and the third surface 211 of the second support member 20 Separate from each other, the first protrusion 12 of the first support 10 and the third protrusion 22 of the second support 20 are close to each other.

In FIG. 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 protrusion 12 of the first support member 10 and the third protrusion of the second support member 20 The portions 22 are in contact with each other, the second engaging protrusion 154 is engaged with the second engaging recess 26 and the fourth engaging protrusion 254 is engaged with the first engaging recess 16, the inter-spine support device 100 is in an unfolded state , Can refer to the state shown in Figure 7 at the same time.

Please refer to FIG. 6B. A fifth included 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. Design as needed, for example, in the range of 100 to 180 degrees.

With the above-mentioned first support member 10 and second support member 20 being turned around the shaft 30 as the center, the inter-spinous process expansion support device 100 can be switched between the clamped state and the unfolded state, so that the spinal process can be supported The open support device 100 is inserted between the spinal processes.

Please refer to FIG. 6B, FIGS. 8A to 8C, and FIG. 9 to illustrate the process 300 of the inter-spinous process expansion support method using the inter-spine process expansion support device 100 of the present creation, including the following steps:

Step 302: The first support member 10 and the second support member 20 are relatively pivotally separated with the shaft center of the shaft body 30 as the center, so that the first convex portion 12 and the third convex portion 22 are in contact with each other, and the ridges are stretched and supported The device 100 is in an unfolded state, as shown in FIG. 6B.

Step 304: Place the first convex part 12 and the third convex part 22 of the support device 100 between the spines 200A and 200B from one side R of the two spines 200A and 200B between the two spines 200A and 200B, as shown in FIG. 8A .

Step 306: Push the support device 100 between the spines to make the first convex portion 12 and the third convex portion 22 pass between the two spines 200A, 200B and move to the other side L of the two spines 200A, 200B, the first support The member 10 and the second support member 20 are relatively pivoted and abutted with the axis of the shaft body 30 as the center, as shown in FIG. 8B.

When pushing the support device 100 between the ridges 200A, 200B from one side R of the two ridges 200A, 200B to the other side L of the two ridges 200A, 200B, it will conform to the contours of the two ridges 200A, 200B to make the second convex The portion 13 and the fourth convex portion 23 abut against each other, and the first convex portion 12 and the third convex portion 22 are also separated at the same time.

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. The portion 22, the second convex portion 13 and the fourth convex portion 23 are respectively located on opposite sides L, R of the two ridges 200A, 200B, and the first concave portion 14 and the second concave portion 24 are located between the two ridges 200A, 200B, as shown in the figure Shown in 8C.

In this way, the inter-spine support device 100 can be positioned between the two spine processes 200A, 200B, the first recess 14 and the second recess 24 provide the support for the two spine processes 200A, 200B, the first protrusion 12 and the second spine The three convex portions 22, the second convex portion 13 and the fourth convex portion 23 can prevent the movement of the supporting device 100 between the spinal processes.

Please refer to FIGS. 10A and 10B. When the inter-spine support device 100 is to be removed from between the two spines 200A and 200B, a long tool 400 can be used.

As shown in FIG. 10A, the tool 400 is inserted into the elongated groove 40 approximately parallel to the axial direction F1 of the shaft body 30 to form a loose fit. At this time, the state of the supporting device 100 being stretched between the spines is shown in FIG. 8A. Then, as shown in FIG. 10B, the first support 10 and the second The supporting member 20 is relatively pivoted and separated with the axis of the shaft 30 as the center. At this time, the state of the supporting device 100 being stretched between the spinal processes is shown in FIG. 8B. In this way, the interspinous process expansion support device 100 can be converted from the clamped state of FIG. 8C to the state of FIG. 8B and then to the state of FIG. 8A, and then the interspine process expansion support device 100 can be removed.

Please refer to the embodiment shown in FIGS. 11, 11A, and 11B, the inter-spine support device 100A includes a first support 10A, a second support 20A, and a shaft 30A. 11, 11A, 11B embodiment of the first support 10A, the second support 20A and the shaft 30A in appearance, connection mode, and operation mode are roughly the same as the embodiment shown in FIG. 1, and the appearance is also roughly the same. The main difference includes that the second surface 112A of the first support member 10A in FIGS. 11, 11A, and 11B is provided with third chamfers 116A, 117A at the junction of the fifth surface 113A and the sixth surface 114A; and the second support member Fourth chamfers 216A and 217A are provided at the junction of the fourth surface 212A, the seventh surface 213A and the eighth surface 214A of 20A. On the whole, the third chamfers 116A and 117A are matched with the first recess 14A, and the fourth chamfers 216A, 217A and the second recess 24A have a "saddle-like shape".

Please refer to the embodiment shown in FIGS. 12, 12A, and 12B, the inter-spine support device 100B includes a first support 10B, a second support 20B, and a shaft 30B. The appearance, connection mode, and operation mode of the first support member 10B, the second support member 20B, and the shaft body 30B in the embodiment of FIGS. 12, 12A, and 12B are roughly the same as the embodiment shown in FIG. 1, and the appearance is also roughly the same. The main differences include that the second surface 112A of the first support member 10B in FIGS. 12, 12A, and 12B forms a smooth "saddle shape" with the first protrusion 12B and the second protrusion 13B. The second support member 20B has a fourth The surface 212B, the third convex portion 22B, and the fourth convex portion 23B form a smooth "saddle shape".

The difference between the structures of the three embodiments shown in Figure 1, Figure 11, and Figure 12 is only that the structure of the first concave portion and the second concave portion are slightly different, and its function is that it can be selected according to the actual size and spacing of the ridges.

In addition, the first support members 10, 10A, 10B and the second support members 20, 20A, 20B of the three types of inter-spine support devices 100, 100A, 100B shown in Fig. 1, Fig. 11, and Fig. 12 are all on the axis. The bodies 30, 30A, and 30B are arranged symmetrically in the radial direction. In addition, the first support members 10, 10A, 10B and the second support members 20, 20A, 20B of the inter-spine support device 100, 100A, 100B can be matched with each other to form a first support and a second support The structure is arranged asymmetrically in the radial direction of the shaft, which is suitable for the asymmetric upper and lower ridges.

Please refer to FIGS. 13A to 13C, the inter-spinous process expansion support device 100C of FIG. 13A is arranged asymmetrically in the radial direction of the shaft body 30 by the first supporting member 10 and the second supporting member 20B; The expansion support device 100D is configured by the first support member 10 and the second support member 20A and is arranged asymmetrically in the radial direction of the shaft 30; The support 20B is arranged asymmetrically in the radial direction of the shaft 30.

However, no matter it is shown in FIGS. 1, 11, 12, 13A~13C, the operation mode of any inter-spine support device 100, 100A, 100B, 100C, 100D, 100E is the same, as shown in FIGS. 8A to 8C. Shows a schematic diagram of the continuous action installed between the spinal processes, and Figures 10A to 10B are schematic diagrams of the continuous action of prying off with a tool.

In summary, the inter-spine support device provided by this creation utilizes the first support and the second support that can pivot to each other, which has a simple structure, easy operation, simple installation and removal methods, and can be retained The spinal ligament maintains the stability of the cone, greatly reduces the risk of bleeding and infection, and provides support for the patient's spinal process.

Although this creation has been disclosed in the above embodiments, it is not intended to limit this creation. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of this creation. Therefore, The scope of protection of this creation shall be subject to those defined by the attached patent scope.

100: Spreading support device between spine

10: The first support

20: The second support

30: Shaft

Claims (23)

A supporting device for spreading between ridges, comprising: a first supporting member, comprising: a first body having a first surface and a second surface opposite to each other; and a first convex portion protrudingly arranged on the second surface One side of the two surfaces; a second convex portion protruding from the first convex portion on the other side of the second surface; a first concave portion formed on the second surface and the first convex portion and the Between the second protrusions; a second support member, including: a second body, which has a third surface and a fourth surface opposed to each other; a third protrusion protrudingly arranged on one side of the fourth surface ; A fourth convex portion protruding from the third convex portion on the other side of the fourth surface; a second concave portion formed on the fourth surface and the third convex portion and the fourth convex portion Between; a shaft, pivoted on the first support and the second support, the first support and the second support are relatively pivoted with the shaft center of the shaft as the center of the circle, so that the ridge support The opening and supporting device presents an expanded state and a clamped state; when the inter-spine expansion supporting device is in the expanded state, the first convex portion is in contact with the third convex portion; the inter-spine expansion supporting device is in the clamp In the closed state, the first surface is in contact with the third surface. For example, the support device between the spinal processes of claim 1, wherein: the first support further comprises: at least one first pivotal piece, which is disposed on the first surface relative to the first convex portion, and each of the first pivots The connecting piece is provided with a first hole, and the surface of at least one of the first pivoting pieces is provided with a first engaging protrusion and a second engaging protrusion, the first engaging protrusion and the second engaging protrusion The first hole Holes are distributed on the surface of the first pivoting piece in a fan shape with their centers; at least one first engaging recess is provided on the first body on one side of the first pivoting piece; the second supporting member further includes: At least one second pivoting piece is disposed on the third surface relative to the third convex portion, each of the second pivoting pieces is provided with a second hole, and at least one of the second pivoting pieces is provided with a third hole on the surface The engaging protrusion and a fourth engaging protrusion, the third engaging protrusion and the fourth engaging protrusion are distributed on the surface of the second pivotal piece in a fan shape with the second hole as the center; at least one The second engaging concave portion is arranged on the second body on one side of the second pivotal piece; when the inter-ridge spreading support device is in the clamped state, the first engaging convex portion is clamped on the The second engaging concave portion and the third engaging convex portion are engaged with the first engaging concave portion; when the inter-vertebral protrusion supporting device is in the expanded state, the first convex portion and the third convex portion 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. For example, the support device between the ridges of claim 2, wherein: the first engaging convex portion, the second engaging convex portion, the third engaging convex portion and the fourth engaging convex portion are elongated , The cross section of which is semicircular, and the length directions of the first, second, third, and fourth engagement protrusions are parallel to the axis of the shaft And the first engaging recess and the second engaging recess are elongated, with a semicircular cross section, and the longitudinal directions of the first engaging recess and the second engaging recess are parallel to the axis The axial direction of the body. For example, the support device between the spinal processes of claim 2, wherein: the first pivotal piece has a circular first head, the first head is concentric with the first hole, and at least one of the first heads The surface of the part is provided with the first engaging protrusion and the second engaging protrusion Portion; and the second pivotal piece has a round second head, the second head is concentric with the second hole, and at least one of the second head surface is provided with the third engaging protrusion And the fourth engaging convex portion. For example, the support device between the spinal processes of claim 2, wherein the first support member has two first pivotal pieces, the second support member has two second pivotal pieces, the two first pivotal pieces and The two second pivotal pieces are arranged at intervals. For example, the inter-spine support device of claim 1, wherein: the first support further includes two first grooves, the two first grooves are arranged on the other side of the first body relative to the shaft body and The axial direction of the shaft is parallel to the two opposite corners of the first surface; and the second support further includes two second grooves, the two second grooves are disposed on the second body relative to the shaft The other side and parallel to the axial direction of the shaft are respectively located at two opposite corners of the third surface; when the inter-vertebral protrusion supporting device is in the clamped state, each of the first grooves respectively corresponds to the position Each of the second grooves constitutes an elongated groove, and each of the elongated grooves allows a tool to be inserted substantially parallel to the axial direction of the shaft body in a loose fit, and the first support is made by swinging the tool The second support member and the second support member are relatively pivoted and separated with the axis of the shaft body as the center, so that the inter-vertebral protrusion support device presents the unfolded state. For example, the inter-spine support device of claim 1, wherein 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 third protrusion protrudes from the The height of the fourth surface is greater than the height of the fourth convex portion protruding from the fourth surface. For example, the support device between the spinal processes of claim 1, wherein the first protrusion protrudes from the The height of 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. For example, the support device between the spinal processes of claim 1, wherein a first angle is formed between the first convex portion and the second surface, and a second angle is formed between the second convex portion and the second surface, There is a third angle between the third convex portion and the fourth surface, a fourth angle between the fourth convex portion and the fourth surface, the first angle, the second angle, and the third angle The angle with the fourth is greater than 90 degrees. For example, the support device between the spinal processes of claim 9, wherein the first included angle is the same as the third included angle, and the second included angle is the same as the fourth included angle. For example, the inter-spine expansion support device of claim 1, wherein when the inter-spine expansion 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 . For example, the support device between the spinal processes of claim 1, wherein the first convex portion and the second convex portion project from the second surface on the second surface with an outer diameter of the second surface, the third convex portion and the second surface The fourth convex portion protrudes from the fourth surface to taper the outer diameter of the fourth surface. For example, the inter-spine support device of claim 1, wherein the distance D1 between the first convex portion and the second convex portion is in the range of 2-10 millimeters (mm), and the third convex portion and the fourth convex portion The distance D2 of the convex portion is the same as the distance D2 between the first convex portion and the second convex portion. For example, the support device between the spinal processes of claim 6, wherein the first body has a fifth surface and a sixth surface opposite to each other, and the fifth surface and the sixth surface are located on the first surface and the second surface , The fifth surface and the sixth surface are substantially 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 Face is located on the third face and the Between the fourth surface, the seventh surface and the eighth surface are substantially perpendicular to the third surface and the fourth surface. For example, the support device between the spinal processes of claim 14, wherein the fifth surface, the sixth surface, the seventh surface, the eighth surface, the first convex portion are parallel to the opposite two surfaces of the shaft in the axial direction, and the third The convex portion is parallel to the opposite sides of the shaft body in the axial direction, and a concave hole is respectively provided for embedding the metal for developing. For example, the inter-spine support device of claim 15, wherein the concave holes provided on the fifth surface and the sixth surface are respectively located between the second convex portion and the first groove; and are provided on the seventh surface. The concave holes of the surface and the eighth surface are respectively located between the fourth convex portion and the second groove. Such as the support device between the spine processes of claim 15, wherein the metal for the development is one of tantalum alloy, titanium alloy, and pure titanium. For example, the inter-spine support device of claim 14, wherein the second surface of the first support member is provided with a third chamfer at the junctions of the fifth surface and the sixth surface, and the second support A fourth chamfer is provided where the fourth surface of the piece meets the seventh surface and the eighth surface; the third chamfer and the first recess, and the fourth chamfer and the second The shape of the recesses is "saddle-like". For example, the inter-spinous process support device of claim 14, wherein between the fifth surface and the sixth surface, and between the seventh surface and the eighth surface, there is a distance D4, when the inter-spine process When the expansion support device is in the clamped state, the fifth surface and the seventh surface constitute a smooth surface, the sixth surface and the eighth surface constitute a smooth surface, and the distance D4 is between 5-20 mm Scope. For example, the inter-spine support device of claim 1, wherein when the inter-spine support device is in the expanded state, a fifth included angle is formed between the first surface and the third surface, and the fifth included angle is defined by In the range of 100~180 degrees. For example, the inter-spine support device of claim 1, wherein the second surface of the first support member, the first protrusion and the second protrusion form a smooth saddle shape; the second support member The fourth surface, the third convex portion and the fourth convex portion form a smooth saddle shape. For example, the support device between the spine processes of claim 1, wherein the first convex portion is protrudingly arranged on one side of the second surface in a generally trapezoidal shape, and an end of the first convex portion away from the second surface is narrower; Two convex parts are disposed on the other side of the second surface in a generally trapezoidal shape with respect to the first convex part, and one end of the second convex part away from the second surface is narrower; and the third convex part is disposed generally in a trapezoidal shape. On one side of the fourth surface, one end of the third convex portion away from the fourth surface is narrower; the fourth convex portion is generally trapezoidal with respect to the third convex portion and is disposed on the other side of the fourth surface , The end of the fourth protrusion away from the fourth surface is narrower. For example, the inter-spine support device of claim 1, wherein the first support and the second support are arranged symmetrically or asymmetrically in the radial direction of the shaft.

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