Spine fusion implant

• US 20020161444A1
• Filed: 04/22/2002
• Published: 10/31/2002
• Est. Priority Date: 04/28/2001
• Status: Abandoned Application

• Current Assignee: Chuntek Lee
• Original Assignee: Chuntek Lee
• Inventors: Choi, Gil-Woon
• Application Number:
  US10/127,631
• Publication Number:
  US 20020161444A1
• Time in Patent Office: Days
• US Class Current: 623/17.11
• CPC Class Codes: A61F 2/30744 End caps, e.g. for closing an endoprosthetic cavity
• CPC Class Codes: A61F 2/442 Intervertebral or spinal discs, e.g. resilient non-disc-shaped intervertebral inflatable pockets A61F2/441; non-disc-shaped intervertebral fusion implants A61F2/4455
• CPC Class Codes: A61F 2/4455 for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages intervertebral discs A61F2/442
• CPC Class Codes: A61F 2/446 having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones
• CPC Class Codes: A61F 2/4611 of spinal prostheses
• CPC Class Codes: A61F 2002/2835 Bone graft implants for filling a bony defect or an endoprosthesis cavity, e.g. by synthetic material or biological material
• CPC Class Codes: A61F 2002/30217 hollow cones, e.g. tubular-like cones
• CPC Class Codes: A61F 2002/30405 made by screwing complementary threads machined on the parts themselves
• CPC Class Codes: A61F 2002/3041 having threaded portions of different pitches
• CPC Class Codes: A61F 2002/30507 using a threaded locking member, e.g. a locking screw or a set screw
• CPC Class Codes: A61F 2002/30538 for adjusting angular orientation
• CPC Class Codes: A61F 2002/30579 with mechanically expandable devices, e.g. fixation devices
• CPC Class Codes: A61F 2002/30593 hollow
• CPC Class Codes: A61F 2002/30594 slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
• CPC Class Codes: A61F 2002/30774 internally-threaded
• CPC Class Codes: A61F 2002/30777 Oblong apertures
• CPC Class Codes: A61F 2002/30787 inclined obliquely with respect to each other
• CPC Class Codes: A61F 2002/30858 Threads interrupted by grooves or sidewalls, e.g. flat sidewalls
• CPC Class Codes: A61F 2002/30873 Threadings machined on non-cylindrical external surfaces
• CPC Class Codes: A61F 2002/448 comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
• CPC Class Codes: A61F 2002/4627 : with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2230/0067 : conical
• CPC Class Codes: A61F 2250/0006 : for adjusting angular orientation

Abstract

The present invention provide a spine fusion implant comprising: a cylindrical main body having an extendable front end; a pressing body of a cap shape expanding the front end of the main body by receiving a pulling force; a closing body coupled to a rear end of the main body and serving as a guide member for a coupling of a fastening body; the fastening body coupled to the closing body and pulling the pressing body. In the present invention as mention above, the front end of the main body is extended by the pressing body and fastening body with the main body being inserted in a fused part during the operation so that the spine fusion implant is seated suitable for the front and rear space between adjacent spine bodied.

Claims

1. A spine fusion implant comprising:

a cylindrical main body having an extendable front end;

a pressing body of a cap shape expanding the front end of the main body by receiving a pulling force;

a closing body coupled to a rear end of the main body and serving as a guide member for a coupling of a fastening body;

the fastening body coupled to the closing body and pulling the pressing body.

2. The spine fusion implant according to claim 1, wherein means for enabling an expansion of the front end in the main body is an incision part which is incised at least one direction.

3. The spine fusion implant according to claim 1, wherein a driver mounting surface is formed on an inner circumferential surface of the rear end in the main body and a threaded part is formed at an inner side of the driver mounting surface.

4. The spine fusion implant according to claim 1, wherein a spiral rib is formed continuously along a length direction on a surface of the main body.

5. The spine fusion implant according to claim 1, wherein a plurality of holes for bone fusion are formed on entire surface of the main body.

6. The spine fusion implant according to claim 1, wherein a diameter of the front end in main body is smaller than that of the rear end.

7. The spine fusion implant according to claim 1, wherein the pressing body comprises a cap member having an inclined pressing surface at a front end thereof and the pressing surface is fixed temporarily by inserted on a compressed surface formed at an inner surface of the front end in the main body.

8. The spine fusion implant according to claim 1, wherein a threaded part for coupling with the fastening body and filling the bone into the main body is formed to penetrates a center portion of the closing body, and a threaded part for coupling with the main body is formed on an outer circumferential surface of the closing body.

9. The spine fusion implant according to claim 1, wherein a threaded part for coupling with the closing body is formed on an outer circumferential surface of a rear portion in the fastening body, a driver seating surface is formed on an inner circumferential surface of the rear portion in the fastening body, and a lengthy cylindrical pressing rod is formed to be extended from the threaded part of the fastening body

10. The spine fusion implant according to claim 1, wherein a continuous spiral blade is provided on an outer circumferential surface of the pressing rod.