CN110934670A

CN110934670A - Intervertebral fusion cage capable of being unfolded at four sides

Info

Publication number: CN110934670A
Application number: CN201911266554.5A
Authority: CN
Inventors: 谢锋
Original assignee: Changzhou Tulmai Medical Equipment Co Ltd
Current assignee: Changzhou Tulmai Medical Equipment Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-03-31

Abstract

The invention discloses a four-side expandable intervertebral fusion cage which comprises a cylinder, wherein a support block is arranged on the outer wall of the cylinder in a clearance fit mode through an opening, a fusion block is arranged on the outer side of the support block, and a support assembly is arranged in the cylinder. This type interbody fusion cage can strut on four sides, through the drum, the opening, the cooperation of piece and fusion piece, make four fusion piece accessible stud's rotation gradually strut to being the cross form all around, and then enlarge the scope of strutting of fusion piece, play better supporting role to the vertebra conic node, and then be convenient for resume the height and the tension of vertebra conic node more, make the better physiological curvature that resumes of vertebra, and enlarge application scope, through the piece, the cooperation of fusion piece and self-modulation subassembly, make the universal rotation of accessible ball dynamic balance and ball realize automatic rotation to the angle that is fit for with the contact surface when contacting with the conic node of fusion piece, and enlarged the area of contact with the conic node, promote supporting effect stability greatly.

Description

Intervertebral fusion cage capable of being unfolded at four sides

Technical Field

The invention relates to the technical field of four-side expandable interbody fusion cages, in particular to a four-side expandable interbody fusion cage.

Background

The upper end of the spine supports the skull, the lower hip bone, the middle rib and the back wall of the thorax, the abdominal cavity and the pelvic cavity. The spine has functions of supporting the trunk, protecting the internal organs, protecting the spinal cord, and performing exercise. A longitudinal spinal canal is formed in the spine from top to bottom, a spinal cord is arranged in the spinal canal, and when the spinal canal is used for treating spinal diseases or degeneration problems, the intervertebral fusion cage is often used for supporting the spine.

The type interbody fusion cage can be strutted on four sides among the prior art, four fusion pieces can not be to being crisscross form progressively strutting all around, and then the scope of strutting of fusion piece is little, poor to the support effect of vertebra taper joint, be not convenient for resume the height and the tension of vertebra taper joint, make the unable better physiological curvature that resumes of vertebra, and application scope is narrow, practicality and flexibility are poor, and fuse the piece can not realize the automatic rotation when contacting with the taper joint to the angle that is fit for with the contact surface, can't realize the automatic adaptation effect, and little with the area of contact of taper joint, support effect poor stability, and then inconvenient people use.

Disclosure of Invention

The invention aims to provide a four-side expandable interbody fusion cage, which aims to solve the problems that four fusion blocks cannot be gradually expanded in a crossed manner to the periphery, the expansion range of the fusion blocks is small, the supporting effect on vertebral joints is poor, the height and the tension of the vertebral joints are inconvenient to recover, the physiological curvature of the spine cannot be better recovered, the application range is narrow, and the practicability and the flexibility are poor in the four-side expandable interbody fusion cage in the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: a four-side expandable interbody fusion cage comprises a cylinder, wherein a support block is arranged on the outer wall of the cylinder in a clearance fit mode through an opening, a fusion block is arranged on the outer side of the support block, and a support assembly is arranged inside the cylinder;

the supporting assembly comprises a stud, a rotating block, a lantern ring, a first lug plate, an inclined rod, a second lug plate, a round rod, a sliding block, a sliding groove and a bearing;

the outer wall left and right sides of stud all rotates with the inner wall left and right sides of drum through the bearing to be connected, stud's right-hand member rigid coupling has the commentaries on classics piece, stud's outer wall threaded connection has two lantern rings, the outer wall rigid coupling of the lantern ring has four first otic placodes, the outside of first otic placode is rotated and is connected with the down tube, the end of down tube is rotated and is connected with the second otic placode, two of homonymy the front of down tube is passed through the round bar and is rotated the connection, the outer end rigid coupling of second otic placode has the slider, the outer wall of slide passes through the spout and a piece's inner clearance fit.

Preferably, a hexagonal hole is machined at the right end of the rotating block.

Preferably, the collars are symmetrically distributed about the axis of the stud.

Preferably, the two inclined rods on the same side are distributed in a staggered manner relative to the round rod.

Preferably, the sliding block and the sliding groove form a sliding structure.

Preferably, the outer end of the fusion block is provided with a convex rib.

Preferably, the outer side of the supporting block is provided with a self-adjusting component;

the self-adjusting assembly comprises a ball groove, a ball, a vertical groove, a square block, an ejector rod, a ball, a circular groove and a support;

the ball groove processing is in the inside of a piece, the inside packing in ball groove has the ball, and the end intercommunication in ball groove has perpendicular groove, perpendicular groove processing is in the outer end of a piece, the inner wall clearance fit in perpendicular groove has the square, the outer end rigid coupling of square has the ejector pin, the outer wall of ejector pin and the inner wall clearance fit in perpendicular groove, the terminal rigid coupling of ejector pin has the ball, the ball outer wall has the support through the cooperation of circular slot clearance fit, the outer end of support and the inner fixed connection of fusion piece.

Preferably, the balls are distributed in the ball grooves.

Preferably, the round groove is matched with the shape of the round ball.

Compared with the prior art, the invention has the beneficial effects that: this four sides can strut type interbody fusion cage structure scientific and reasonable, convenience safe in utilization:

through the cooperation of drum, opening, piece and fusion piece for four fusion piece accessible stud's rotation is gradually strutted to being the cross form all around, and then enlarges the scope of strutting of fusion piece, plays better supporting role to the vertebra conic node, and then is convenient for resume the height and the tension of vertebra festival more, makes the better physiological curvature that resumes of vertebra, and enlarges application scope, promotes practicality and flexibility.

Through the cooperation of a supporting block, a fusion block and a self-adjusting assembly, the fusion block can automatically rotate to an angle suitable for a contact surface through dynamic balance of balls and universal rotation of the balls when contacting with the conical section, so that an automatic adaptation effect is realized, the contact area with the conical section is enlarged, the stability of a supporting effect is greatly improved, and the use by people is facilitated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view showing the connection relationship between the ball grooves, the balls and the support blocks in FIG. 1;

FIG. 3 is a schematic view of the connection of the stud, tumbler and cylinder of FIG. 1;

fig. 4 is a side view of the connection relationship of fig. 1.

In the figure: 1. cylinder, 2, opening, 3, support block, 4, fusion block, 5, support component, 501, stud, 502, rotating block, 503, lantern ring, 504, first otic placode, 505, diagonal pole, 506, second otic placode, 507, round bar, 508, slider, 509, slide, 510, bearing, 6, self-adjusting component, 601, ball groove, 602, ball, 603, vertical slot, 604, square, 605, ejector pin, 606, ball, 607, round slot, 608, support, 7, convex edge.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a four sides can strut type interbody fusion cage, includes drum 1, and drum 1's outer wall has a piece 3 through 2 clearance fit in opening, and a piece quantity is four, is the cross distribution, and the outside of a piece 3 is equipped with fuses 4, and the outer end processing that fuses 4 has bead 7, and bead 7 is used for increasing the friction that fuses 4 outer ends, and drum 1's inside is equipped with supporting component 5.

The support component 5 comprises a stud 501, a rotating block 502, a lantern ring 503, a first ear plate 504, an inclined rod 505, a second ear plate 506, a round rod 507, a sliding block 508, a sliding groove 509 and a bearing 510, wherein the left side and the right side of the outer wall of the stud 501 are rotatably connected with the left side and the right side of the inner wall of the cylinder 1 through the bearing 510, the bearing 510 enables the stud 501 to rotate when stressed, the right end of the stud 501 is fixedly connected with the rotating block 502, the right end of the rotating block 502 is provided with a hexagonal hole which enables the rotating block 502 to rotate, the outer wall of the stud 501 is in threaded connection with the two lantern rings 503, the lantern rings 503 are axially and symmetrically distributed about the stud 501, the stud 801 can drive the two lantern rings 503 to simultaneously move close to or away from each other when rotating, the outer wall of the lantern ring 503 is fixedly connected with the four first ear plates 504, the outer side of the first ear plates 504 is rotatably connected with the inclined, the end of down tube 505 rotates and is connected with second otic placode 506, the front of two down tubes 505 of homonymy rotates through round bar 507 and connects, round bar 507 is located down tube 505 axis crossing position, two down tubes 505 of homonymy are in the crisscross distribution of round bar 507, down tube 505 makes the support of a piece 3 more stable, the outer end rigid coupling of second otic placode 506 has slider 508, the outer wall of slide 508 passes through spout 509 and the inner clearance fit of a piece 3, slider 508 constitutes sliding construction with spout 509, spout 509 plays the guide effect to slider 508.

The outer side of the supporting block 3 is provided with a self-adjusting component 6, the self-adjusting component 6 comprises a ball groove 601, balls 602, a vertical groove 603, a square 604, a top rod 605, balls 606, a circular groove 607 and a support 608, the ball groove 601 is processed inside the supporting block 3, the ball groove 601 is curved, so that the balls 602 can move conveniently, the ball groove 601 is filled with the balls 602, the balls 602 are distributed in the ball groove 601, so that the balls 603 can roll more smoothly when the top rod 605 at two sides moves, the tail end of the ball groove 601 is communicated with the vertical groove 603, the vertical groove 603 is processed at the outer end of the supporting block 3, the vertical groove 603 is axially and symmetrically distributed around the ball groove 601, the inner wall of the vertical groove 603 is in clearance fit with the square 604, the balls 602 are attached to the square 604, the outer end of the square 604 is fixedly connected with the top rod 605, the outer wall of the top rod 605 is in clearance fit with the inner wall of the vertical groove 603, the tail end of the top rod 605 is fixedly connected with the ball, the round groove 607 is matched with the round ball 606 in shape, so that the top rod 605 can rotate randomly in multiple directions, and the outer end of the support 608 is fixedly connected with the inner end of the fusion block 4.

In this embodiment, when the four-side expandable intervertebral fusion cage is used, the device is first placed at a designated position between the vertebrae, so that the four fusion blocks 4 are all attached to the vertebrae, the rotation block 502 is rotated to be connected to the cylinder 1 by the rotation of the stud 501 and the screw connection of the stud 501 and the collar 503, so that the two collars 503 simultaneously make close movements, the two collars are connected to the circular rod 507 by the rotation of the slant rod 505 and the sliding slot 509, the slide plate 508 and the sliding slot 509 are in clearance fit, so that the slant rod 505 is rotated transversely and oppositely, and the support block 3 is ejected by the clearance fit of the support block 3 and the opening 2, so that the fusion blocks 4 are crossed to form branches and are attached to the vertebrae, and the fusion blocks 4 are automatically attached to the contact surfaces when contacting the vertebrae by the clearance fit of the balls 602 and the ball slots 601, the blocks 604 and the vertical slots 603, and the balls 606 and the support seats 608, thereby enlarging the contact area of the fusion block 4 and the vertebra, further improving the supporting capability to the vertebra and facilitating the use of people.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a four sides can strut type interbody fusion cage, includes drum (1), its characterized in that: a support block (3) is in clearance fit with the outer wall of the cylinder (1) through an opening (2), a fusion block (4) is arranged on the outer side of the support block (3), and a support component (5) is arranged in the cylinder (1);

the support component (5) comprises a stud (501), a rotating block (502), a lantern ring (503), a first lug plate (504), an inclined rod (505), a second lug plate (506), a round rod (507), a sliding block (508), a sliding groove (509) and a bearing (510);

the outer wall left and right sides of stud (501) all rotates through the inner wall left and right sides of bearing (510) and drum (1) to be connected, the right-hand member rigid coupling of stud (501) has commentaries on classics piece (502), the outer wall threaded connection of stud (501) has two lantern rings (503), the outer wall rigid coupling of the lantern ring (503) has four first otic placodes (504), the outside of first otic placode (504) is rotated and is connected with down tube (505), the end of down tube (505) is rotated and is connected with second otic placode (506), two of homonymy the front of down tube (505) is rotated through round bar (507) and is connected, the outer end rigid coupling of second otic placode (506) has slider (508), the outer wall of slide (508) passes through spout (509) and the inner clearance fit of a piece (3).

2. The four-sided distractible intersomatic cage of claim 1, wherein: the right end of the rotating block (502) is provided with a hexagonal hole.

3. The four-sided distractible intersomatic cage of claim 1, wherein: the collars (503) are arranged axisymmetrically with respect to the stud (501).

4. The four-sided distractible intersomatic cage of claim 1, wherein: the two inclined rods (505) on the same side are distributed in a staggered way relative to the round rod (507).

5. The four-sided distractible intersomatic cage of claim 1, wherein: the sliding block (508) and the sliding groove (509) form a sliding structure.

6. The four-sided distractible intersomatic cage of claim 1, wherein: and the outer end of the fusion block (4) is processed with a convex edge (7).

7. The four-sided distractible intersomatic cage of claim 1, wherein: the outer side of the supporting block (3) is provided with a self-adjusting component (6);

the self-adjusting component (6) comprises a ball groove (601), a ball (602), a vertical groove (603), a square block (604), a push rod (605), a round ball (606), a round groove (607) and a support (608);

the ball groove (601) is processed inside the supporting block (3), balls (602) are filled inside the ball groove (601), the tail end of the ball groove (601) is communicated with a vertical groove (603), the vertical groove (603) is processed at the outer end of the supporting block (3), a square block (604) is in clearance fit with the inner wall of the vertical groove (603), a push rod (605) is fixedly connected to the outer end of the square block (604), the outer wall of the push rod (605) is in clearance fit with the inner wall of the vertical groove (603), a round ball (606) is fixedly connected to the tail end of the push rod (605), a support (608) is in clearance fit with the outer wall of the round ball (606) through a round groove (607), and the outer end of the support (608) is fixedly connected with the inner end of the fusing block (4).

8. The four-sided distractible intersomatic cage of claim 7, wherein: the balls (602) are fully distributed in the ball grooves (601).

9. The four-sided distractible intersomatic cage of claim 7, wherein: the round groove (607) is matched with the shape of the round ball (606).