Interspinous process fixation device

Abstract

The present invention relates to an interspinous process fixing device, comprising: a central connecting portion, a first side wing, a second side wing, a third side wing, and a fourth side wing. The first side wing extends from the central connecting portion to a first direction; the second side wing extends from the central connecting portion to the first direction; the third side wing extends from the central connecting portion to a second direction relative to the first direction; and the fourth side wing extends from the central connecting portion to the second direction. The central connecting portion has at least one line hole, and the line hole extends along a third direction substantially perpendicular to the first direction. The first side wing, the second side wing, the third side wing, and the fourth side wing each have a through hole.

Description

Technical Field

[0001] The invention relates to an interspinous process fixing device; in particular, to an interspinous process fixing device with side wings and through holes thereof. Background Art

[0002] Treatment of spinal discomfort may include long-term medical management or surgery. Medical management usually controls symptoms, such as pain, rather than eliminating the problem. For some patients, this requires long-term medication, which can change the patient's psychological state or cause side effects. Another option is surgery, but it is invasive and may change the anatomy and function of the spine. For example, spinal fusion surgery allows two or more vertebrae to be fused using autologous bone and / or artificial implants. Fusion methods are irreversible and can significantly change the range of motion of the spine.

[0003] U.S. Patent No. 8118839 discloses a soft interspinous filling block, which is a compressible and elastic interspinous filling block, which can avoid the fracture of the spinous process caused by the stress concentration on the spinous process structure when the hard interspinous filling block is used. The soft interspinous filling blocks all have a double-wing structure, that is, there are two wing-shaped protrusions of the same size on the left and right sides of the interspinous filling block. The symmetrical double-wing structure can provide a better fit effect of the interspinous filling block between the two spinous processes. However, this filling block is fixed by two binding wires around the spinous process from the outside of the filling block, which is less effective in fixing the filling block.

[0004] In view of this, there is an urgent need in the art for an interspinous process fixator to solve the above-mentioned problems. Summary of the invention

[0005] In order to solve the above-mentioned problems and achieve the purpose of the invention, the present invention provides an interspinous process fixation device, which has the advantage of being able to be simultaneously applied to the posterior and lateral insertion of the spinous process, and also has a good rope binding mechanism to improve the fixation of the filling block and reduce the chance of the filling block falling out. At the same time, it fits more closely with the spinous process and has the effect of fixing the spine.

[0006] According to the present invention, the interspinous process fixing device comprises: a central connecting portion, a first side wing, a second side wing, a third side wing, and a fourth side wing. The first side wing extends from the central connecting portion to a first direction; the second side wing extends from the central connecting portion to the first direction; the third side wing extends from the central connecting portion to a second direction relative to the first direction; the fourth side wing extends from the central connecting portion to the second direction. The central connecting portion has at least one line hole, and the line hole extends along a third direction substantially perpendicular to the first direction. The first side wing, the second side wing, the third side wing, and the fourth side wing each have a through hole.

[0007] In a specific embodiment, the first side wing, the second side wing, the third side wing, and the fourth side wing respectively include an outer side surface, a top surface, and an inner side surface, wherein the through hole connects the outer side surface and the top surface.

[0008] In a specific embodiment, the first side wing, the second side wing, the third side wing, and the fourth side wing respectively include an outer side surface and an inner side surface, wherein the through hole connects the outer side surface and the inner side surface.

[0009] In a specific embodiment, the lengths of the first wing and the second wing are substantially the same; and the lengths of the third wing and the fourth wing are substantially the same.

[0010] In a specific embodiment, the first side wing, the second side wing, the third side wing, and the fourth side wing respectively include an outer side and an inner side and are in an arc shape, and the arc curves from the outer side toward the inner side.

[0011] In a specific embodiment, the first side wing, the second side wing, the third side wing, and the fourth side wing each have a thickness that is smaller than a thickness of the central connecting portion.

[0012] In a specific embodiment, the central connecting portion includes a first surface and a second surface opposite to the first surface, the first surface faces the spine when implanted in a human body, and the second surface includes at least one groove.

[0013] In a specific embodiment, the first side wing, the second side wing, the third side wing, and the fourth side wing respectively have a bottom end and a top end, the bottom end is connected to the central connecting portion, and the thickness of the bottom end is greater than the thickness of the top end.

[0014] In a specific embodiment, the first side wing, the second side wing, the third side wing, and the fourth side wing respectively have a bottom end and a top end, the bottom end is connected to the central connecting portion, and the width of the bottom end is greater than the width of the top end.

[0015] In a specific embodiment, the material of the interspinous process fixation device is a human biocompatible material.

[0016] In a specific embodiment, the material of the interspinous process fixation device is dimethyl polysilicone, polyurethane or a mixture thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are provided to implement the embodiments of the present invention, but are not intended to limit the scope of the protection claimed:

[0018] Figure 1 Schematic diagram of the interspinous process fixation device of the present invention.

[0019] Figure 2 It is a front view of the interspinous process fixation device of the present invention.

[0020] Figure 3 It is a schematic diagram of the flank portion of the interspinous process fixation device of the present invention.

[0021] Figure 4 It is a side view of the interspinous process fixation device of the present invention.

[0022] Figure 5 It is a schematic diagram of the interspinous process fixation device of the present invention being fixed to the spine.

[0023] Description of Reference Numerals

[0024] 10 Interspinous process fixation device

[0025] 100 Central connection

[0026] 1005 Second Side

[0027] 1007 Page 1

[0028] 101,103 Line holes

[0029] 105 First Groove

[0030] 107 Second Groove

[0031] 301 First Wing

[0032] 3011 First through hole

[0033] 3013 External side

[0034] 3015 Top

[0035] 3017 inner side

[0036] 501 Second Wing

[0037] 5011 Second through hole

[0038] 701 Third Wing

[0039] 7011 Third through hole

[0040] 901 Fourth Wing

[0041] 9011 Fourth through hole. DETAILED DESCRIPTION

[0042] The technical features of the present invention, including specific features, are disclosed in the scope of the attached claims. For the technical features of the present invention, the best understanding is to match the specification, the embodiments based on the principles of the present invention, and the drawings to describe the present invention in detail as follows. In addition, the contents disclosed in this specification can be understood and implemented by those skilled in the art, and all equivalent changes or modifications that do not deviate from the concept of the invention can be covered by the claims.

[0043] All technical and scientific terms described in the specification and claims of the present invention, unless otherwise defined, are definitions known to those skilled in the art to which the present invention belongs. The singular terms "one", "an", "the", or similar terms thereof, unless otherwise specified, may refer to more than one object. "Or", "and", and", "and" used in this specification, unless otherwise specified, all refer to "or / and". In addition, the terms "including" and "comprising" are open conjunctions with no restrictions. The above definitions only illustrate the references of the term definitions and should not be interpreted as limitations on the purpose of the invention. Unless otherwise specified, the materials used in the present invention are all commercially available and easily available.

[0044] The ordinal numbers mentioned in this specification and claims, such as "first", "second", etc., are only used to describe the disclosed elements, and do not indicate or represent any execution order between the elements, nor do they indicate or represent the order between one element and another element, or the order of steps in a process. The ordinal numbers are only used to make a component with a certain name clearly distinguishable from another component with the same name.

[0045] In addition, the terms “on”, “above”, “above” or similar terms used in this specification refer to an element being in direct contact with another element, but also refer to an element not being in direct contact with another element.

[0046] Reference Figure 1-Figure 4 The present invention provides an interspinous process fixation device 10, comprising: a central connecting portion 100, a first side wing 301, a second side wing 501, a third side wing 701, and a fourth side wing 901.

[0047] The first side wing 301 extends from the central connecting portion 100 toward a first direction; the second side wing 501 extends from the central connecting portion 100 toward the first direction; the third side wing 701 extends from the central connecting portion 100 toward a second direction relative to the first direction; and the fourth side wing 901 extends from the central connecting portion 100 toward the second direction. In other words, the first side wing 301 and the second side wing 501 extend from the central connecting portion 100 toward the same direction, and the third side wing 701 and the fourth side wing 901 extend from the central connecting portion 100 toward the same direction, and the extending directions of the first side wing 301 and the second side wing 501 and the extending directions of the third side wing 701 and the fourth side wing 901 are opposite to each other.

[0048] The central connecting portion 100 has at least one thread hole. In the drawings of the present invention, the central connecting portion 100 has two thread holes 101, 103. However, the present invention is not limited thereto, and the central connecting portion 100 may have a single thread hole or more than two thread holes. The thread holes may be arranged along the length direction of the interspinous process fixation device 10, or along the width direction thereof, or in an oblique arrangement. The thread holes 101, 103 extend along a third direction substantially perpendicular to the first direction. In other words, Figure 2 It is known that the wire holes 101 , 103 are substantially perpendicular to the extending direction of the side wings 301 , 501 , 701 , 901 , and are also perpendicular to the length direction of the interspinous process fixation device 10 .

[0049] The first side wing 301 , the second side wing 501 , the third side wing 701 , and the fourth side wing 901 each have a through hole.

[0050] Specifically, the first side wing 301 has a first through hole 3011 ; the second side wing 501 has a second through hole 5011 ; the third side wing 701 has a third through hole 7011 ; and the fourth side wing 901 has a fourth through hole 9011 .

[0051] exist Figure 2-Figure 3 In the disclosed embodiments, the side wings 301, 501, 701, 901 respectively include an outer side surface, a top surface, and an inner side surface. Figure 3 As shown, the first side wing 301 has an outer side surface 3013, a top surface 3015, and an inner side surface 3017, wherein the inner side surface 3017 faces one side of the other side wing, and the outer side surface 3013 is opposite to the other side of the inner side surface 3017, and the top surface 3015 connects the outer side surface 3013 and the inner side surface 3017. In this embodiment, the first through hole 3011 connects the outer side surface 3013 and the top surface 3015. The structures of other side wings 501, 701, 901 are similar and will not be described in detail herein.

[0052] However, in another embodiment not disclosed in the drawings, the through hole connects the outer side surface and the inner side surface of the wing.

[0053] In addition, in another embodiment not disclosed in the drawings, the side wing does not have a top surface, the outer side surface of the side wing is connected to the inner side surface, and the through hole connects the outer side surface and the inner side surface.

[0054] In a specific embodiment, the lengths of the first wing 301 and the second wing 501 are substantially the same; the lengths of the third wing 701 and the fourth wing 901 are substantially the same. In a more specific embodiment, the lengths of the first wing 301 and the second wing 501 are the same as or different from the lengths of the third wing 701 and the fourth wing 901.

[0055] In a specific embodiment, the first side wing 301, the second side wing 501, the third side wing 701, and the fourth side wing 901 each have a thickness, and the thickness is less than the thickness of the central connecting portion 100. In a preferred embodiment, the first side wing 301, the second side wing 501, the third side wing 701, and the fourth side wing 901 each have a bottom end and a top end, the bottom end is connected to the central connecting portion 100, and the thickness of the bottom end is greater than the thickness of the top end. Therefore, overall, in the device of the present invention, the thickness of the central connecting portion 100 is the largest and is greater than or equal to the bottom end of the side wing, and the thickness of the side wing gradually decreases from the bottom end to the top end, and the thickness of the bottom end is the smallest.

[0056] In a specific embodiment, the first side wing 301, the second side wing 501, the third side wing 701, and the fourth side wing 901 respectively include an outer side and an inner side and are in an arc shape, and the arc curves from the outer side toward the inner side. In another specific embodiment, the side wings 301, 501, 701, 901 are parallel to each other. In another specific embodiment, the side wings 301, 501, 701, 901 respectively include an outer side and an inner side, and the outer side is in an arc shape and the inner sides are parallel to each other.

[0057] In this embodiment, for the inner side surfaces of the side wings, the distance between the bottom ends of the inner side surfaces opposite to each other is greater than or equal to the distance between the top ends of the inner side surfaces opposite to each other.

[0058] Or in another alternative embodiment, the first side wing 301, the second side wing 501, the third side wing 701, and the fourth side wing 901 respectively have a bottom end and a top end, the bottom end is connected to the central connecting portion 100, and the width of the bottom end is greater than the width of the top end. Figure 2 In the embodiment of the present invention, the first side wing 301 and the second side wing 501 are taken as examples, and the bottom thickness of the side wing 301, 501 is greater than the top thickness thereof. Figure 2 In the embodiment of the present invention, the side wings 301, 501 are triangular in front view. However, in the present invention, the side wings may also be arc-shaped.

[0059] like Figure 4As shown, the central connecting portion 100 includes a first surface 1007 and a second surface 1005 opposite to the first surface 1007. The first surface 1007 faces the spine when implanted in a human body, and the second surface 1005 includes at least one groove. Figure 4 In the embodiment of the present invention, the second surface 1005 includes a first groove 105 and a second groove 107. The first groove 105 is located between the first side wing 301 and the second side wing 501, the second groove 107 is located between the third side wing 701 and the fourth side wing 901, and the first groove 105 extends toward the second direction, and the second groove extends toward the first direction.

[0060] In addition, the material of the interspinous process fixation device 10 can be a biocompatible material, including but not limited to dimethyl polysilicone, polyurethane, or a mixture thereof.

[0061] Figure 5 Schematic diagram of the interspinous process fixation device 10 being fixed to the spine. In the present invention, the interspinous process fixation device 10 is fixed to the spine by a rope. Figure 5 As shown, when the interspinous process fixation device 10 is fixed on the spine, one end of a rope passes through the wire hole, and then passes through the second through hole and the first through hole in sequence; on the other hand, the other end of the rope passes through another wire hole, and then passes through the fourth through hole and the third through hole in sequence, and finally the two ends of the rope are fixed to a hook ring to fix the interspinous process fixation device 10 to the spine.

[0062] From the contents disclosed in the embodiments of this specification, it is obvious to those skilled in the art to which the present invention belongs that the aforementioned embodiments are only illustrative and not restrictive; those skilled in the art to which the present invention belongs can implement the present invention through many changes and substitutions, which are not different from the technical features of the present invention. According to the embodiments of the specification, the present invention can have a variety of changes without hindering its implementation. The claims provided in this specification define the scope of the present invention, which covers the aforementioned methods and structures and equivalent creations.

Claims

1. An interspinous process fixation device, comprising: A central connecting portion having at least one line hole; A first side wing extending from the central connecting portion toward a first direction; A second side wing extending from the central connecting portion toward the first direction; a third side wing extending from the central connecting portion toward a second direction opposite to the first direction; as well as a fourth side wing extending from the central connecting portion toward the second direction; The wire hole extends along a third direction substantially perpendicular to the first direction; The first side wing, the second side wing, the third side wing, and the fourth side wing each have a through hole; The first side wing, the second side wing, the third side wing, and the fourth side wing respectively have a bottom end connected to the central connecting portion, a top end defining a distal end surface, an inner side surface, and an outer side surface; wherein each of the through holes is inside the corresponding side wing, extends radially outward from each of the endmost surfaces toward the central connecting portion, and relative to a central axis extending in the length direction of the interspinous process fixation device perpendicular to the third direction; and Each of the through holes extends parallel to the outer side surface of the corresponding side wing.

2. The interspinous process fixation device as described in claim 1, wherein the length of the first side wing is substantially the same as the length of the second side wing; and the length of the third side wing is substantially the same as the length of the fourth side wing.

3. The interspinous process fixation device as described in claim 1, wherein the first side wing, the second side wing, the third side wing, and the fourth side wing are respectively in an arc shape, and the arc shape is bent from the outer side surface toward the inner side surface.

4. The interspinous process fixation device as described in claim 1, wherein the first side wing, the second side wing, the third side wing, and the fourth side wing respectively have a thickness, and the thickness is smaller than the thickness of the central connecting portion.

5. The interspinous process fixation device as claimed in claim 1, wherein the central connecting portion comprises a first surface and a second surface opposite to the first surface, the first surface faces the spine when implanted in a human body, and the second surface comprises at least one groove. The interspinous process fixation device according to claim 1 , wherein the width of the bottom end is greater than the width of the top end.

7. The interspinous process fixation device as claimed in claim 1, wherein the material of the interspinous process fixation device is a human biocompatible material. 8 . The interspinous process fixation device as claimed in claim 1 , wherein the material of the interspinous process fixation device is dimethyl polysilicone, polyurethane or a mixture thereof.

Images