KR20160084873A - Vertebral body posterior approaching artificial disc replacement for making lordosis - Google Patents

Vertebral body posterior approaching artificial disc replacement for making lordosis Download PDF

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Publication number
KR20160084873A
KR20160084873A KR1020150000964A KR20150000964A KR20160084873A KR 20160084873 A KR20160084873 A KR 20160084873A KR 1020150000964 A KR1020150000964 A KR 1020150000964A KR 20150000964 A KR20150000964 A KR 20150000964A KR 20160084873 A KR20160084873 A KR 20160084873A
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South Korea
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plate
upper plate
lower plate
vertebrae
artificial disc
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KR1020150000964A
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Korean (ko)
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김현성
박영서
윤홍원
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김현성
주식회사 앤트테크놀로지
박영서
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Priority to KR1020150000964A priority Critical patent/KR20160084873A/en
Publication of KR20160084873A publication Critical patent/KR20160084873A/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient
    • A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30904—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves serrated profile, i.e. saw-toothed

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Transplantation (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Vascular Medicine (AREA)
  • Cardiology (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Prostheses (AREA)

Abstract

The present invention relates to a vertebral body posterior approaching artificial disc for causing lordosis and capable of being inserted between adjacent vertebrae. The vertebral body posterior approaching artificial disc comprises: a body having a rectangular shape without a side, and inserted between adjacent vertebrae to support upper and lower vertebrae and provide the upper and lower vertebrae with elasticity; and a support means including an upper plate support unit for supporting an upper plate of the body by being closely placed on the lower surface of the upper plate of the body, a lower plate support unit for supporting a lower plate of the body by being closely placed on the upper surface of the lower plate of the body, and a connection frame for connecting the upper plate support unit with one end of the lower plate support unit. According to the present invention, a vertebral body can be forwardly, backwardly, and laterally moved while lordosis is maintained. Moreover, a minimal invasive surgery (MIS) can be performed in a posterior of a vertebral body, so a patient can be rapidly recovered. Furthermore, an artificial disc inserted in a vertebral body is opened by using a distractor, and an artificial disc support means is fitted therebetween, so an operation can be simply performed and lordosis can be effectively maintained. In addition, the artificial disc is inserted while being overlapped, so a lateral width is relatively narrower than a forward and backward length and only a small part of a disc and annulus fibrosus thereof may be removed.

Description

TECHNICAL FIELD [0001] The present invention relates to a vertebral body posterior approaching artificial disc,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertebral body posterior approaching artificial disc for making a vertebral body, and more particularly, to a vertebral body posterior approaching artificial disc for making a vertebral body, To an access artificial disk.

The human spine has a different curvature from other vertebrates because it performs standing upright. The curvature of the anterior convexity seen in the cervical vertebrae and the lumbar vertebrae is referred to as the precursor. On the other hand, in thoracic vertebra, only posterior is shown. This curvature plays a role of alleviating the impact from the upper and lower sides together with the intervertebral disc, and thus the abnormality of the curvature affects the ligament or muscle supporting the trunk and causes back pain. It is important to ensure that the vertebrae are properly maintained.

Korean Patent Laid-Open No. 2001-0012139 (a fusion device capable of changing the height) as a device for maintaining the lordosis is a vertebrae device for facilitating fusion between neighboring vertebrae of the human vertebra An anterior end opposite the posterior end; A pair of engaging plates coupled between the vertebrae and the vertebrae to maintain disk space between the vertebrae in use; And an alignment device for separating the connecting plate such that there is a height between the connecting plates when in use, the height near the front end being different from the height near the rear end, The present invention relates to a vertebral implant device that maintains a natural curve.

Korean Patent Publication No. 2007-0004656 (Implant lamination for spine fusion) includes various shapes that can be stacked to accommodate different intervertebral spacing and curvature, and the implants are made of a polymer-bone composite having osteogenic properties By choosing an appropriate set of features, in order to best fit the shape of the intervertebral cavity for a particular patient, the surgeon can adjust the overall shape of the implant prior to or during the surgical procedure .

According to these conventional patents, the internal structure for adjusting the height of the disc is complicated, so that the cost of the artificial disc itself is inconvenient, and it must be inserted anteriorly when inserted between the vertebrae, (Annulus Fibrosus) and remove most of the disc. As a result, minimally invasive surgery using minimal incisions is not possible with this type of surgery.

According to the conventional artificial disk, since the area occupied by the artificial disk itself can not be minimized, the incision area becomes wider, the operation takes longer, the bleeding becomes severe, and the patient takes a long time to recover .

In addition, since the height of the artificial disc itself is fixed, it is impossible to ensure natural movement of the vertebra while maintaining maximum lordosis when inserted between the vertebrae.

Korea Patent Publication No. 2001-0012139 Korea Patent Publication No. 2007-0004656

Disclosure of the Invention The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a vertebra approaching artificial disc for making a vertebral meridian capable of moving back and forth and left and right of a vertebra while maintaining lordosis. .

In addition, by inserting the artificial disc between the vertebral bodies, the artificial disc is opened by using a distractor, and the artificial disc supporting means is inserted therebetween. Thus, the vertebral body, which is simple in operation and can effectively maintain the lordosis The present invention provides an artificial disc having a back-vertebral body approaching to the back.

It is also an object of the present invention to provide an artificial disc approaching a vertebra posterior to insert a slightly inclined angle at the posterior of the vertebral body in a state where the artificial disc is superposed to make a vertebral body capable of minimally invasive surgery.

It is also an object of the present invention to provide a vertebra posterior approaching artificial disc for making a vertebral body that supports the upper and lower vertebrae in a wide surface area by being inserted between the vertebrae and then spreading in a cross shape using a mechanism.

To achieve the above object, the present invention provides an artificial disc insertable between adjacent vertebrae for supporting a vertebral body and an upper and lower vertebrae, A body of a "c" shape; And a support means composed of a top plate supporting portion which is in close contact with the bottom surface of the body and supports the top plate, a bottom plate supporting portion which is in contact with the top surface of the bottom plate of the body and supports the bottom plate, and a connection frame which connects the top plate supporting portion and one end of the bottom plate supporting portion do.

The upper plate supporting portion and the lower plate supporting portion are inserted along the body length from the rear of the body, and the upper plate supporting portion and the lower plate supporting portion are formed to have sizes corresponding to the lengths before and after the lower plate on the body, And the lower plate supporting portion can be brought in close contact with the upper surface of the lower plate from the front to the rear.

Further, the upper and lower plates of the body may become thicker from the rear toward the front.

In addition, the upper plate of the body is thicker from the rear toward the front, and the lower surface of the upper plate is formed lower as it goes from the rear to the front, and the lower plate is thicker from the rear toward the front, And the upper plate supporting part and the lower plate supporting part push the bottom surface of the lower plate formed lower at the time of inserting along the body length from the rear of the body and support the upper face of the lower plate which is formed higher by pushing it downward.

In addition, the upper plate supporting portion and the lower plate supporting portion may be provided parallel to each other at a predetermined interval.

The protrusion formed on the upper surface of the front portion of the upper plate supporting portion is coupled to the coupling groove formed on the bottom surface of the upper plate front portion, The projections formed to be convex on the front lower surface of the lower plate front portion can be coupled to the coupling grooves formed on the upper surface of the lower plate front portion.

Also, the 'U' shaped body may be a 'U' shaped first body; And a second body which is rotatably coupled to the first body and which is superimposed on the outer side of the first body and rotated by a predetermined mechanism so as to be oriented in a direction different from that of the first body, The upper plate supporting part is in contact with the lower surface of the upper plate of the first body to support the upper plate and the lower plate supporting part is in contact with the upper surface of the lower plate of the first body to support the lower plate.

The first body and the second body are formed in a relatively long length relative to the left and right widths, and the second body is extended in an X-shape so as to face a direction different from the first body, , And can support different parts of the lower vertebra.

In addition, the second body is rotatably coupled to at least one rotation axis formed on the outer side of the first body.

In addition, the first body may include a rotation preventing jaw that prevents the second body from rotating more than a predetermined angle when the second body rotates.

The first body may be formed in a diagonal direction with respect to the longitudinal direction of the body, and may have a seating portion having a predetermined depth and corresponding to the width of the second body so that the second body can be seated when the body rotates .

The upper and lower plates constituting the second body are axially rotated so that the upper surface of the first body upper plate and the upper surface of the second body upper plate are height And the bottom surface of the first body lower plate and the bottom surface of the second body lower plate can be equal in height.

In addition, the seat portion is provided on each of the upper and lower plates constituting the first body, and a rotary shaft is protruded from the seat portion, so that the second body can be engaged and rotated axially.

The first body is constituted by an upper plate engaging with the upper barb and a lower plate engaging with the lower barb. A rotary shaft is protruded from the lower surface of the upper plate and the lower plate is engaged with the upper barb, And a lower plate engaged with the lower frame, wherein the upper plate and the lower plate are respectively formed with coupling holes, the second body upper plate is axially coupled to the upper surface of the first body upper plate, and the second lower body plate is axially coupled to the lower surface of the first lower body plate, So that the second body rotates at a predetermined angle and can be spread in an X-shape.

The first body may include an upper plate engaged with the upper barb, a lower plate engaged with the lower barb, and a fixed connection portion formed with a mechanism coupling hole for coupling the upper plate and the lower plate and inserted between the adjacent vertebrae, The body includes an upper plate engaging with the upper barb, a lower plate engaging with the lower barb, and a rotation connecting part connecting the upper plate and the lower plate and rotating by a predetermined mechanism, wherein the upper plate of the second body is in close contact with the upper plate of the first body, The lower plate of the second body is closely attached to the lower plate of the first body and the upper plate of the second body rotates on the upper plate of the first body when the rotary connection is rotated by a predetermined mechanism, The shaft can be rotated under the lower plate of the body.

The fixed connection portion is provided on the rear left or right side of the first body and the rotation connection portion is provided on the rear right or left side of the second body which is opposite thereto, And can correspond to the left and right widths of the upper or lower plate of the first body or the second body.

The fixed connection portion and the rotation connection portion are disposed in parallel to the rear of the first body and the second body, and the side portion of the rotation connection portion facing the fixed connection portion is sloped so as to insert a predetermined mechanism for rotating the rotation connection portion .

According to the present invention, it is possible to move the vertebrae forward, backward and left and right while maintaining the lordosis.

In addition, minimally invasive surgery (MIS) can be performed posterior to the vertebral body, resulting in rapid recovery of the patient.

In addition, by inserting the artificial disc between the vertebral bodies, the artificial disc is opened using a distractor, and then the artificial disc supporting means is inserted therebetween, thereby simplifying the operation and effectively maintaining the lordosis.

In addition, since the artificial disc is inserted in a folded state, the lateral width of the annulus fibrosus and the disc may be slightly removed.

In addition, it is inserted between the vertebrae and spreads in a cross shape, so that the upper and lower vertebrae can be stably supported on a wide surface area.

In addition, it is possible to stably support the upper and lower vertebrae without being tilted to one side by being symmetrically symmetrical in the X-shape at the center of the vertebral body.

FIG. 1A is an exemplary view showing a state in which a body constituting a vertebrae rear approaching artificial disc for making a vertebral body according to the present invention is inserted between vertebral bodies by means of an instrument and then deployed in an X-shape by another mechanism.
FIG. 1B is a view showing a state in which a body constituting a back vertebra approaching artificial disc for making a vertebral body according to the present invention is inserted between vertebral bodies, and then a distractor is inserted from behind.
FIG. 1c is a perspective view of a vertebra of the upper and lower vertebra by inserting a distractor after the body constituting the vertebrae rear approaching artificial disc for inserting the vertebrae according to the present invention is inserted between the vertebrae, Lordosis).
FIG. 1D is a view showing a state in which a body constituting a vertebrae rearward approaching artificial disc for making a vertebral body according to the present invention is inserted between vertebrae, and a disposer is removed after formation of Lordosis of upper and lower vertebrae Degree.
FIG. 1E is a view showing a state in which a supporting means is coupled to a body constituting a vertebra posterior approaching artificial disk for making a vertebral body according to the present invention. FIG.
FIG. 1F is a view showing a state in which a supporting means is coupled to a body constituting a vertebra posterior approaching artificial disk for making a vertebral body according to the present invention. FIG.
FIG. 2A is a perspective view showing a state in which a support means is coupled to a body constituting a vertebra posterior approaching artificial disk for making a vertebral body according to the present invention; FIG.
FIG. 2B is a side view showing a state in which the support means is coupled to the body constituting the vertebra posterior approaching artificial disk for making the vertebrae according to the present invention. FIG.
FIG. 3A is a perspective view showing a first embodiment of a vertebra posterior approaching artificial disc for making vertebrae according to the present invention; FIG.
FIG. 3B is a plan view showing a first embodiment of a vertebra posterior approaching artificial disc for making a vertebral body according to the present invention. FIG.
4A is a perspective view showing a second embodiment of a vertebra posterior approaching artificial disc for making a vertebral body according to the present invention;
FIG. 4B is a plan view of a second embodiment of a vertebra posterior approaching artificial disc for making vertebrae according to the present invention; FIG.
5A is a perspective view showing a third embodiment of a vertebra posterior approaching artificial disc for making vertebrae according to the present invention.
FIG. 5B is a plan view showing a third embodiment of a vertebra posterior approaching artificial disc for making vertebrae according to the present invention. FIG.
FIG. 6A is a perspective view showing a body that forms a vertebra posterior approaching artificial disc for making a vertebral body according to the present invention; FIG.
FIG. 6B is a plan view showing a state in which a body constituting a back vertebra approaching artificial disk for making vertebrae according to the present invention is unfolded. FIG.
FIG. 6C is a side view showing a state in which a body constituting a back vertebra approaching artificial disc for making a vertebral body according to the present invention is unfolded. FIG.
FIG. 7A is a plan view showing a body in which a vertebra posterior approaching artificial disc for constructing a vertebral body according to the present invention is formed. FIG.
FIG. 7B is a perspective view showing a body in which a vertebra posterior approaching artificial disc for constructing a vertebral body according to the present invention is formed. FIG.
FIG. 7C is a side view showing a body in which a body constituting a vertebra posterior approaching artificial disc for making a vertebral body according to the present invention is folded. FIG.
8A is a perspective view of a first body constituting a vertebra posterior approaching artificial disc for making a vertebral body according to the present invention;
FIG. 8B is a side view of a first body constituting a vertebra posterior approaching artificial disc for making vertebrae according to the present invention; FIG.
FIG. 8C is a plan view of a first body constituting a vertebra posterior approaching artificial disc for making vertebrae according to the present invention; FIG.
FIG. 9A is a perspective view of a second body constituting a vertebra posterior approaching artificial disc for making a vertebral body according to the present invention; FIG.
FIG. 9B is a plan view of a second body that constitutes a vertebra posterior approaching artificial disc for making vertebrae according to the present invention; FIG.
Fig. 9c is a side view of a second body constituting a vertebra posterior approaching artificial disc for making vertebrae according to the present invention; Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments described below, but may be embodied in various other forms.

The present embodiments are provided so that the disclosure of the present invention is thoroughly disclosed and that those skilled in the art will fully understand the scope of the present invention.

And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

In addition, throughout the specification, like reference numerals refer to like elements, and the terms (mentioned) used herein are intended to illustrate the embodiments and not to limit the invention.

In this specification, the singular forms include plural forms unless the context clearly dictates otherwise, and the constituents and acts referred to as " comprising (or having) " do not exclude the presence or addition of one or more other constituents and actions .

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs.

Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1A, a vertebra posterior approaching artificial disc 100 for making vertebrae is inserted as an artificial disc insertable between adjacent vertebrae 1a and 1b, and is inserted in the back, that is, behind the vertebral body, In a diagonal direction. The artificial disc 100 is inserted into the artificial disc 100 using the artificial disc 100 insertion mechanism 3 after the minimum incision is made to the extent that the artificial disc 100 can be inserted in a collapsed state.

When the artificial disk 100 is inserted between the vertebral bodies 1a and 1b using the insertion mechanism 3 and then rotated using a rotation mechanism (not shown), the artificial disk 100 is spread in a cross shape (X shape) . The upper and lower vertebrae 1a and 1b can be stably supported in a wide area and supported in a balanced manner in the left and right directions.

1B to 1F, a description will be given of how the support means 130 is coupled to the body of the artificial disk 100. FIG.

Shaped body of the artificial disc 100 is inserted between the vertebrae and spread in a cross shape and then the head 5a of the distractor 5 is inserted to the back of the body of the artificial disc 100 (Fig. 1B).

When the head 5a of the diffractor 5 is inserted, the body of the artificial disk 100 is spread up and down and the vertebrae 1a and 1b are opened. This constitutes Lordosis (Fig. 1c).

After the rhodocisis formed, the body of the artificial disk 100 is held up and down when the disperser 5 is removed (FIG. 1D).

After the body of the artificial disc 100 is opened, the supporting means 130 is coupled to the body of the artificial disc 100 from the rear of the vertebral body (FIG.

When the supporting means 130 is coupled with the body of the artificial disc 100 engaged, tension is applied to the upper and lower parts of the body so that the weight of the artificial disc 100 is increased by the load of the upper and lower vertebrae 1a, 100) can be easily prevented from falling down, thereby effectively maintaining Lordosis.

Hereinafter, the specific configuration of the vertebral body posterior approaching artificial disc 100 for making vertebrae will be described.

Referring to FIGS. 2A and 2B, the artificial disc 100 includes a 'U' shaped body and a support means 130, and a 'C' shaped body includes a first body 110 and a second body 120).

The 'U' shaped body is inserted between the adjacent vertebrae to support the upper and lower vertebrae and provides elastic force to the upper and lower vertebrae.

The support means 130 includes an upper plate support portion 131 which is in close contact with the bottom surface of the body and supports the upper plate, a lower plate support portion 133 which is in contact with the upper surface of the lower plate of the body and supports the lower plate, an upper plate support portion 131, And a connecting frame 135 connecting one end of the connecting frame 135 to the other.

The support means 130 includes an upper plate support 131 and a lower plate 111b of the first body 110 which are in close contact with the bottom surface of the upper plate 111a of the first body 110 to support the upper plate 111a upward, A lower plate supporting portion 133 which is in close contact with the upper surface and supports the lower plate 111b downward, and a connection frame 135. The support means 130 is engaged at the rear of the first body 110 through the rear space formed by the rotation of the second body 120 after the artificial disk 100 is spread in a cross shape. The support means 130 is coupled to the first body 110 of the artificial disc 100 to further reinforce the tension on the upper and lower sides of the first body 110.

The upper plate supporting portion 131 and the lower plate supporting portion 133 are inserted along the length of the first body 110 from the rear of the first body 110 and the upper plate supporting portion 131 and the lower plate supporting portion 133 are inserted into the first body 110 The upper plate support portion 131 is in close contact with the lower surface of the upper plate 111a from the front to the rear and the lower plate support portion 133 is in contact with the lower plate 111b, And is in close contact with the upper surface from the front to the rear.

The upper plate 111a and the lower plate 111b of the first body 110 become thicker from the rear toward the front. Referring to FIG. 2B, the front of the upper plate 111a and the lower plate 111b are formed thicker than the rear, so that the gap between the upper plate 111a and the lower plate 111b is closer. 1C, when the head 5a of the diffractor 5 is inserted between the upper plate 111a and the lower plate 111b of the first body 110, the head 5a of the diffractor 5 Pushes the upper plate 111a and the lower plate 111b upward and downward, respectively. By supporting the upper plate 111a and the lower plate 111b so that the upper plate 111a and the lower plate 111b are not lowered by the load of the vertebral body by engaging the support means 130 after the upper plate 111a and the lower plate 111b are respectively moved up and down, .

In addition, the upper plate 111a of the first body 110 is thicker from the rear toward the front, and the lower surface of the upper plate 111a is formed lower toward the front from the rear, and the lower plate 111b, The upper plate supporting portion 131 and the lower plate supporting portion 133 are formed to have the same length as the first body 110 in the rear of the first body 110, The lower surface of the upper plate 111a which is lowered when inserting the upper plate 111a is supported by being pushed upward and the upper surface of the lower plate 111b which is formed higher by pushing it downward. In this case, a case where the upper part of the upper plate 111a and the lower part of the lower part 111b are separated from each other by using the support means 130 without using the diffractor 5 is formed after forming the Lordosis.

It is preferable that the upper plate support portion 131 and the lower plate support portion 133 constituting the support means 130 are provided parallel to each other at a predetermined interval.

On the other hand, engagement grooves 114a and 114b are formed concavely in the front lower surface of the upper plate 111a of the first body 110 and the upper surface of the front portion of the lower plate 111b, The protruding portion 133a formed on the front lower surface of the lower plate supporting portion 133 is engaged with the engaging groove 114a formed on the front lower surface of the upper plate 111a formed on the upper surface of the front portion of the lower plate 111b And is coupled to the formed coupling groove 114b. The protrusions 131a and 133a of the support means 130 are engaged with the coupling grooves 114a and 114b of the first body 110 so that the support means 130 does not separate from the first body 110, The state can be kept safe.

3A and 3B, the configuration according to the first embodiment of the present invention can be seen. A mechanism coupling hole 137 for coupling the support means 130 to the first body 110 of the artificial disc 100 is formed at the rear of the connection frame 135. An upper frame 135a is extended from an upper portion of the connection frame 135 and a lower frame 135c is extended therefrom. Further, the upper frame 135a is provided with a coupling edge 135b which is engaged with the vertebral body. Of course, the upper frame 135a and the lower frame 135c as well as the coupling blade 135b will be stuck to the vertebral body.

4A and 4B, the configuration according to the second embodiment of the present invention can be seen. Except for the lower frame 135c in the first embodiment. The second embodiment is a case where the upper frame 135a and the coupling teeth 135b are stuck in the upper vertebral body.

5A and 5B, the configuration according to the third embodiment of the present invention can be seen. A screw 135d is coupled to the upper portion of the connection frame 135 in a diagonal direction toward the vertebral body. A mechanism coupling hole 137 for coupling the support means 130 to the first body 110 of the artificial disc 100 is formed at the rear of the connection frame 135. The screw 135d is stuck to the upper vertebral body so that the artificial disc 100 stably engages without disengaging from the vertebral body.

6A to 9C, the artificial disc 100 includes a first body 110 having a 'C' shape and a second body 120 having a 'C' shape.

The first body 110 is inserted between the adjacent vertebrae 1a and 1b to support the upper and lower vertebrae and to provide an elastic force to the upper and lower vertebrae and to the upper and lower vertebrae 1a and 1b A plurality of sawtooth-shaped fixing projections 119 are formed.

The second body 120 is inserted between the adjacent vertebrae 1a and 1b to support the upper and lower vertebrae and provide elastic force to the upper and lower vertebrae and is rotatably coupled to the first body 110. [ The second body 120 is superimposed on the outer side of the first body 110 and is rotated in an axis direction by a rotating mechanism to be spread in an X-shape so as to be directed in a different direction from the first body 110. A plurality of serrated fixing protrusions 125 are formed on the upper and lower portions of the second body 120 so as to be coupled to the upper and lower vertebrae 1a and 1b.

The upper plate support part 131 constituting the support means 130 is in close contact with the bottom surface of the upper plate 111a of the first body 110 to support the upper plate 111a upward and the lower plate support part 133 supports the first body 110 And the lower plate 111b is supported downward.

The first body 110 and the second body 120 have a relatively long front-to-rear length in the left-to-right width and are extended in an X-shape so that the second body 120 is oriented in a different direction from the first body 110 The first body 110 and the second body 120 support different portions of the upper and lower vertebrae. The conventional artificial disc is not suitable for minimally invasive surgery because its width and width are similar to each other. However, since the width of the artificial disc 100 according to the present invention is narrower than that of the back and forth, (Minimally Invasive Surgery (MIS)) using the insertion device 3 after the minimum incision.

The second body 120 is rotatably coupled to one or more rotary shafts formed on the outer side of the first body 110. Referring to FIG. 8B, rotation shafts 113a and 113b are provided on the upper and lower portions of the first body 110, respectively. There may be only one rotation shaft at the upper portion or the lower portion, or one rotation shaft at the upper portion and one at the lower portion. The second body 120 is axially coupled to the rotation shaft and rotates.

The first body 110 has a rotation preventing jaw that prevents the second body 120 from rotating more than a predetermined angle when the second body 120 rotates. Referring to FIGS. 8A and 8B, each of the upper and lower portions of the first body 110 includes a plurality of anti-rotation tails 115, so that the second body 120 is caught by the anti- I can not. The first and second bodies 110 and 120 are symmetrically formed in the X-shape by restricting the rotation of the second body 120 within a certain range.

The first body 110 is formed in a diagonal direction with respect to the longitudinal direction of the body and has a shape corresponding to the width of the second body 120 so as to be seated when the second body 120 rotates, And a seat portion.

Specifically, the seating portions 112a and 112b are respectively provided on the upper plate 111a and the lower plate 111b constituting the first body 110, and the upper plate 121a and the lower plate 121b constituting the second body 120 The upper surface of the upper plate 111a of the first body 110 and the upper surface of the upper plate 121a of the second body 120 are equal in height and the lower plate 111b of the first body 110 And the bottom surface of the lower plate 121b of the second body 120 becomes equal in height.

The seat portions 112a and 112b are respectively provided on the upper surface of the upper plate 111a and the lower surface of the lower plate 111b constituting the first body 110. The seat portions 112a and 112b are provided with rotation shafts 113a and 113b And the second body 120 is engaged with the second body 120 to rotate.

8A to 8C, the seating portions 112a and 112b are provided at a predetermined depth in the upper and lower plates 111a and 111b of the first body 110, As shown in Fig. When the second body 120 rotates slightly by a rotation mechanism (not shown) and then seats on the seating portions 112a and 112b, the second body 120 is lowered by a predetermined depth. When the second body 120 is seated downward, the second body 120 can not rotate any more, and the upper surface of the upper plate 111a of the first body 110 and the upper surface of the upper plate 121a of the second body 120 The height of the lower surface of the lower plate 111b of the first body 110 and the height of the lower surface of the lower plate 121b of the second body 120 become equal to each other.

As shown in FIG. 6C, when the height becomes the same, the load of the upper and lower vertebrae 1a and 1b is stabilized without concentrating on either one of the first body 110 or the second body 120, So that it can be supported in a balanced manner.

8A to 9C, the first body 110 is composed of an upper plate 111a engaged with the upper lower bracket 1b and a lower plate 111b engaged with the lower lower bracket 1a, Rotation shafts 113a and 113b are protruded from the upper surface and the lower surface of the lower plate 111b. The second body 120 includes an upper plate 121a engaged with the upper lower bracket 1b, The upper plate 121a and the lower plate 121b are formed with coupling holes 123a and 123b respectively and the upper plate 121a of the second body 120 is connected to the upper plate 111a of the first body 110, And the lower body 121b of the second body 120 is axially coupled to the rotary shaft 113b provided on the lower surface of the lower body 111b of the first body 110, (120) is rotated at a predetermined angle by a rotating mechanism to be spread in an X-shape.

The first body 110 includes an upper plate 111a engaged with the lower brackets 1b and a lower plate 111b engaged with the lower brackets 1a and a lower plate 111b interposed between the upper plates 111a and the lower plate 111b, And a fixed connection portion 117 formed with a mechanism coupling hole 117a to which the mechanism 3 for insertion is coupled. Referring to FIG. 8A, the fixed connection portion 117 is located on the rear right side of the first body 110. Referring to FIG. 7A, after the insertion mechanism 3 is coupled to the mechanism coupling hole 117a, The artificial disc 100 in which the first body 110 and the second body 120 are overlapped is inserted between the vertebrae.

The second body 120 includes an upper plate 121a engaged with the upper shoulder 1b, a lower plate 121b engaged with the lower hook 1a and a lower plate 121b connected to the upper plate 121a and the lower plate 121b, And a rotating connection portion 122 that is rotated by a mechanism (not shown). 9A to 9C, the rotation connection portion 122 is located on the left rear side of the upper plate 121a and the lower plate 121b of the second body 120, and referring to FIGS. 7A and 7B, And the fixed connection portion 117 are inserted between the vertebrae by the insertion mechanism 3 in a state where they are positioned in parallel to the rear side of the artificial disk 100 and inserted between the vertebrae 1a and 1b, The rotation connection portion 122 is rotated in a direction opposite to the fixed connection portion 117 so as to be spread in a cross shape.

7A to 7C, the upper plate 121a of the second body 120 is closely fitted on the upper plate 111a of the first body 110 when inserted between the vertebrae using the insertion mechanism 3, The lower plate 121b of the body 120 is closely inserted under the lower plate 111b of the first body 110 and inserted in a collapsed state.

6A to 6C, when the rotation connection portion 122 is rotated by a predetermined mechanism (rotation mechanism) after insertion between the vertebral bodies, the upper plate 121a of the second body 120 is rotated by the upper plate 121 of the first body 110, And the lower plate 121b of the second body 120 rotates under the lower plate 111b of the first body 110 to be spread in a cross shape.

7A to 7C, the fixed connection part 117 is provided on the rear left or right side of the first body 110, and the rotation connection part 122 is provided on the opposite side of the second body 120 The left and right widths of the fixed connection part 117 and the rotation connection part 122 correspond to the left and right widths of the upper or lower plate of the first body 110 or the second body 120, respectively. As a result, when the first body 110 and the second body 120 are completely collapsed, the fixed connection part 117 and the rotation connection part 122 located at the rear side are positioned adjacent to each other, The left and right widths of the first and second bodies 122 and 122 correspond to the widths of the upper and lower plates of the first and second bodies 110 and 120 so that the artificial disc 100 can be inserted It will be possible.

7A and 9B, the fixed connection part 117 and the rotation connection part 122 are located in the rear of the first body 110 and the second body 120, The side surface portion 122a of the rotation connection portion 122 is sloped so that a predetermined mechanism (rotation mechanism) for rotating the rotation connection portion 122 can be inserted. As shown in FIG. 1, the artificial disc 100 is inserted between the vertebrae and then rotated by the rotation mechanism (not shown). The first body 110 and the second body 120, The rotation mechanism is inserted into the side surface portion 122a of the rotation connection portion 122 in order to rotate the second body 120 in a fully collapsed state. The side surface portion 122a of the rotation connection portion 122 is wide outside and narrows toward the inside so that the rotation mechanism can be inserted into the side surface portion 122a and the rotation connection portion 122 can be pushed and rotated.

When the second body 120 rotates slightly by the rotating mechanism and then seats on the seating portions 112a and 112b of the first body 110, the work of spreading in a cross shape is completed.

According to the present invention, it is possible to move back and forth, left and right of the vertebra while maintaining the lordosis.

In addition, minimally invasive surgery (MIS) can be performed posterior to the vertebral body, resulting in rapid recovery of the patient.

In addition, by inserting the artificial disc between the vertebral bodies, the artificial disc is opened using a distractor, and then the artificial disc supporting means is inserted therebetween, thereby simplifying the operation and effectively maintaining the lordosis.

In addition, since the artificial disc is inserted in a folded state, the lateral width of the annulus fibrosus and the disc may be slightly removed.

In addition, it is inserted between the vertebrae and spreads in a cross shape, so that the upper and lower vertebrae can be stably supported on a wide surface area.

In addition, it is possible to stably support the upper and lower vertebrae without being tilted to one side by being symmetrically symmetrical in the X-shape at the center of the vertebral body.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents. Obviously, such modifications are intended to be within the scope of the claims.

1a: lower vertebra 1a: upper vertebra
2a, 2b: Spin wheel 3: Insertion mechanism
100: artificial disk 110: first body
111a, 121a: upper plate 111b, 121b: lower plate
112a, 112b: seat portions 113a, 113b:
114a, 114b: coupling groove 115:
117: fixed connection portion 117a, 137: mechanism coupling hole
119, 125: Fixing projection 120: Second body
122: rotation connecting portion 122a:
123a, 123b: engagement hole 130: support means
131: upper plate supporting portion 131a, 133a:
133: lower plate supporting part 135: connecting frame
135a: upper frame 135b:
135c: Lower frame 135d: Screw (screw)

Claims (17)

In an artificial disc insertable between adjacent vertebrae,
A 'U' shaped body inserted between the adjacent vertebrae to support the upper and lower vertebrae and to provide an elastic force to the upper and lower vertebrae; And
A lower plate supporting part which is in close contact with a bottom surface of the upper plate of the body and supports the upper plate and which is in close contact with the upper surface of the lower plate of the body and a connection frame which connects the upper plate supporting part and one end of the lower plate supporting part; Wherein the vertebral body is a posterior approaching artificial disc for making a vertebral body. The method according to claim 1,
The upper plate supporting portion and the lower plate supporting portion are inserted along the length of the body from the rear of the body, and the upper plate supporting portion and the lower plate supporting portion are formed to have sizes corresponding to the lengths before and after the lower plate on the body, And the lower plate supporting portion is in close contact with the upper surface of the lower plate from the front to the back. The method according to claim 1,
Wherein the upper and lower plates of the body are thicker from the rear to the front. The method according to claim 1,
The upper surface of the upper plate of the body is thicker from the rear toward the front, and the lower surface of the upper plate is formed to be lower as it goes from the rear to the front. The lower plate becomes thicker from the rear toward the front, Respectively,
Wherein the upper plate supporting portion and the lower plate supporting portion push the bottom face of the upper plate lowered when inserting along the body length from the rear of the body and push the upper face of the higher plate downward to support the upper plate, Rear approaching artificial disc. The method according to any one of claims 1, 2, and 4,
Wherein the upper plate supporting portion and the lower plate supporting portion are provided in parallel at upper and lower portions with a predetermined interval therebetween. The method according to any one of claims 1, 2, and 4,
Wherein a concave engagement groove is formed in the upper surface of the upper plate of the body and the upper surface of the lower plate of the lower plate,
The projecting portion convexly formed on the upper surface of the front portion of the upper plate supporting portion is coupled to the coupling groove formed on the bottom plate of the upper portion of the upper plate and the projecting portion convexly formed on the front lower portion of the lower plate supporting portion is coupled to the coupling groove formed on the upper surface of the lower plate front portion The posterior approach of the vertebral body to make the vertebrae. The method according to claim 1,
The 'C' shaped body
A first body having a 'C'shape; And
Shaped body which is rotatably coupled to the first body and is superimposed on the outer side of the first body and rotated in a predetermined mechanism so as to be oriented in a direction different from that of the first body, And a second body,
Wherein the upper plate supporting part is in close contact with the bottom surface of the upper plate of the first body to support the upper plate and the lower plate supporting part is closely attached to the upper surface of the lower plate of the first body to support the lower plate. 8. The method of claim 7,
The first body and the second body are formed to have a relatively long length relative to the left and right widths, and the second body is extended in an X-shape so as to face a direction different from the first body, Wherein the backing of the vertebrae supports different portions of the vertebral body. 8. The method of claim 7,
Wherein the second body is rotatably coupled to at least one rotation axis formed on an outer side of the first body. 8. The method of claim 7,
Wherein the first body has a rotation preventing jaw that prevents the second body from rotating beyond a predetermined angle when the second body rotates about the axis. 8. The method of claim 7,
The first body is formed in a diagonal direction with respect to the longitudinal direction of the body, and has a seating portion having a predetermined depth and a size corresponding to the width of the second body so that the second body can be seated upon rotation of the body. Posterior vertebral approach artificial disc to make vertebral body. 12. The method of claim 11,
The upper and lower plates constituting the second body are axially rotated so that the upper surface of the first body upper plate and the upper surface of the second body upper plate are equal in height when the seat is seated, , The bottom surface of the lower body of the first body and the lower surface of the lower body of the second body are equal in height. 12. The method of claim 11,
Wherein the seating portion is provided on each of the upper plate and the lower plate constituting the first body, and the rotary shaft is protruded from the seating portion, so that the second body is rotated together with the second body to rotate the spinal column. 8. The method of claim 7,
The first body is composed of an upper plate engaged with an upper lower bar, and a lower plate engaged with a lower bar, and a rotation shaft protrudes from the lower surface of the upper plate and the lower plate,
The second body is composed of an upper plate engaged with the upper lower frame and a lower plate engaged with the lower frame.
The second body upper plate is axially coupled to the upper surface of the first body upper plate and the second lower body plate is axially coupled to the lower surface of the first lower body plate so that the second body rotates at a predetermined angle and spreads in an X- Posterior vertebral approach artificial disc to make vertebral body. 8. The method of claim 7,
The first body
An upper plate engaging with the upper barb, a lower plate engaging with the lower barb, and a stationary connecting portion formed with a mechanism engaging hole for engaging the upper plate and the lower plate,
The second body
An upper plate engaged with the upper barb, a lower plate engaged with the lower barb, and a rotation connecting portion connecting the upper and lower plates and rotating by a predetermined mechanism,
The upper plate of the second body is in close contact with the upper plate of the first body, the lower plate of the second body is in close contact with the lower plate of the first body, and when the rotary connection is rotated by a predetermined mechanism, And the lower plate of the second body is axially rotated under the lower plate of the first body. 16. The method of claim 15,
The fixed connection portion is provided on the rear left or right side of the first body and the rotation connection portion is provided on the rear right or left side of the second body,
Wherein the left and right widths of the fixed connection portion and the rotation connection portion correspond to the left and right widths of the upper plate or the lower plate of the first body or the second body. 16. The method of claim 15,
The fixed connection portion and the rotation connection portion are disposed on the rear side of the first body and the second body and the side portion of the rotation connection portion facing the fixed connection portion is sloped so as to insert a predetermined mechanism for rotating the rotation connection portion The posterior approach of the vertebral body to make the vertebrae.
KR1020150000964A 2015-01-06 2015-01-06 Vertebral body posterior approaching artificial disc replacement for making lordosis KR20160084873A (en)

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KR20210030287A (en) 2018-07-09 2021-03-17 류베 가부시키가이샤 Lubrication pump device

Citations (2)

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Publication number Priority date Publication date Assignee Title
KR20010012139A (en) 1997-05-01 2001-02-15 스피널 컨셉츠, 인코포레이티드 Multi-variable-height fusion device
KR20070004656A (en) 2004-01-30 2007-01-09 오스테오테크, 인코포레이티드 Stacking implants for spinal fusion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010012139A (en) 1997-05-01 2001-02-15 스피널 컨셉츠, 인코포레이티드 Multi-variable-height fusion device
KR20070004656A (en) 2004-01-30 2007-01-09 오스테오테크, 인코포레이티드 Stacking implants for spinal fusion

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Publication number Priority date Publication date Assignee Title
KR20210030287A (en) 2018-07-09 2021-03-17 류베 가부시키가이샤 Lubrication pump device

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