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US-12622729-B2 - Cervical plate for reoperation

US12622729B2US 12622729 B2US12622729 B2US 12622729B2US-12622729-B2

Abstract

A cervical plate for easy reoperation includes: a main plate of a rectangular panel shape, which is installed using a screw on the vertebra from which the disk has been removed during spinal operation to support and fix the surgical site vertebra; and a subsidiary plate of a panel shape, which is installed using a screw during reoperation on an adjacent area to the surgical site where the main plate is installed to support and fix the reoperation site vertebra, wherein the main plate and the subsidiary plate can be connected continuously, thereby allowing additional installation of the subsidiary plate while maintaining the installed state of the main plate.

Inventors

  • Hwaseon KIM

Assignees

  • SURGIOGEN CO., LTD.

Dates

Publication Date
20260512
Application Date
20231221
Priority Date
20230523

Claims (9)

  1. 1 . A cervical plate for reoperation, the cervical plate comprising: a first plate having a rectangular panel shape, and configured to be installed using one or more screws on a surgical site of a vertebra to support and fix the vertebra; and a second plate having a panel shape and configured to be installed using the one or more screws on a reoperation site located in an adjacent area to the surgical site where the first plate is installed to support and fix the vertebra, the second plate including: a plurality of fastening holes defined around a periphery of the second plate based on a center of the second plate, and a second cover unit rotatably coupled to an upper surface of the second plate via a second coupling shaft, and configured to cover a center point of each the plurality of fastening holes defined in the second plate, wherein the first plate and the second plate are continuously connected when installed, and the second plate is installed while maintaining an installed state of the first plate, wherein the first plate and the second plate respectively include the plurality of fastening holes, each the plurality of fastening holes having threads defined on an inner surface thereof to allow the one or more screws to penetrate in a screw manner and to be coupled to the vertebra, wherein the first plate includes a fitting groove defined on two opposite surfaces to which the second plate is connected, the fitting groove configured to allow one side of the second plate to fit into the first plate, wherein the fitting groove includes a coupling groove defined on an inner circumferential surface of the fitting groove and recessed inward in a direction that is vertically perpendicular to a longitudinal direction of the first plate, wherein the second plate includes a protrusion configured to fit into the fitting groove of the first plate, wherein the protrusion includes a coupling protrusion corresponding to the coupling groove and configured to be inserted and coupled into the coupling groove, wherein the coupling protrusion is disposed on an outer circumferential surface of the protrusion and protrudes outward in a direction vertically perpendicular to a longitudinal direction of the second plate, and wherein the coupling protrusion is slidably inserted into the coupling groove along the direction vertically perpendicular to the longitudinal direction of the first plate, allowing the first plate to be slidably coupled to the second plate in the direction vertically perpendicular to the longitudinal direction of the first plate.
  2. 2 . The cervical plate according to claim 1 , wherein the plurality of fastening holes formed in the first plate are formed in sets of two, and multiple sets of fastening holes are spaced at regular intervals in a length direction of the first plate.
  3. 3 . The cervical plate according to claim 2 , wherein the first plate further comprises: a first cover unit rotatably coupled to an upper surface of the first plate via a first coupling shaft, wherein the first cover unit selectively covers upper portions of one or more sets of the fastening holes formed in the first plate.
  4. 4 . The cervical plate according to claim 3 , wherein the first cover unit is formed in a ‘A’ shape extending in two directions from the first coupling shaft, and is provided in a same number as the sets of fastening holes formed in the first plate, and each of the first cover unit simultaneously opens or covers the upper portions of one set of the fastening holes formed in the first plate.
  5. 5 . The cervical plate according to claim 1 , wherein the second cover unit is: coupled to the center of the second plate, formed to extend in three directions from the second coupling shaft, and configured to rotate and simultaneously open or cover upper portions of the plurality of fastening holes defined in the second plate.
  6. 6 . The cervical plate according to claim 5 , wherein the second cover unit has a ‘Y’ shape having three protruding ends respectively extending in the three directions about the second coupling shaft.
  7. 7 . The cervical plate according to claim 1 , wherein the first plate comprises at least one observation hole, which is formed to vertically penetrate the first plate, thereby allowing visual confirmation of a vertebral surface contacting with the first plate.
  8. 8 . The cervical plate according to claim 1 , wherein the protrusion has a tapered shape that narrows towards a distal end thereof to be inserted into the coupling groove.
  9. 9 . The cervical plate according to claim 1 , wherein the second cover unit has at least one protruding end having an extended bar and a hole cover at the end of the extended bar, and wherein the hole cover is configured to cover upper portions of the plurality of fastening holes defined in the second plate.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) The present application claims benefit and priority to Korean patent application No. 10-2023-0066158 filed on May 23, 2023, in the Korean Intellectual Property Office, the entire disclosure of which is hereby incorporated by reference. BACKGROUND OF THE INVENTION Field of the Invention The present disclosure relates to a cervical plate for easy reoperation, and more specifically, to a cervical plate for easy reoperation, in which a reoperation plate can be easily installed without the need to remove a previously installed plate during spinal reoperation. Background Art A vertebral body consists of 32 to 35 vertebrae forming the trunk and intervertebral disks located between the vertebrae, and is the core of a human body, which forms a support for the torso and connects the skull at the top and the pelvis at the bottom. The vertebrae are composed of seven cervical vertebrae, twelve thoracic vertebrae, five lumbar vertebrae, five sacral vertebrae, and three to five coccygeal vertebrae from the top. In adults, the five sacral vertebrae fuse to form one sacrum, and the three to five coccygeal vertebrae fuse to form one coccyx. In general, the cervical vertebrae are located at the uppermost position of the vertebral body and includes seven vertebrae. From the top, the first cervical vertebra is also called the atlas, and has a round shape with the articular surface supporting the skull, but lacks a vertebral centrum and a spinous process. The second cervical vertebra is also known as the axis, assists in the rotation of the neck, and has a spinous process that extends upward from the vertebral centrum. Each of the third to sixth cervical vertebrae has a small and wide vertebral centrum, a triangular vertebral foramen, and a bifurcated spinous processes. The seventh cervical vertebra is also known as the vertebra prominens, and has a long and non-bifurcated spinous process. The cervical vertebrae with such structures and functions may be damaged or deformed due to external impacts from accidents or prolonged twisted postures. To fix the damaged or deformed cervical vertebrae, a procedure of inserting and fixing a cervical plate (cervical fixation device), including a plate and a screw, onto the cervical vertebrae is performed. However, the conventional cervical plate has a disadvantage in that due to a wide fixation range, when reoperation is performed on an adjacent area, there is insufficient space to fasten a new screw. So, it is necessary to install a new screw after removing the existing cervical plate. For example, if a patient who has undergone operation on the fourth and fifth cervical vertebrae has a problem at the fifth and sixth cervical vertebrae and needs reoperation, the operation on the fifth and sixth cervical vertebrae can only be performed after completely removing all of the existing cervical plates due to the insufficient space on the fifth cervical vertebra. So, the conventional cervical plate has several problems of cumbersome operation, long operation time, and increased mental, physical, and financial burdens on the patient. Therefore, there is a need for a method to solve the above problems. SUMMARY OF THE INVENTION Accordingly, the present disclosure has been made to solve the above-mentioned problems occurring in the prior arts, and it is an objective of the present disclosure to provide a cervical plate for easy reoperation, which includes a fitting groove formed at an end of a plate used in initial operation, and a protrusion protrudingly formed at an end of a plate used for reoperation, thereby allowing for smooth operation during reoperation without the need to remove the existing plate. The objectives of the present disclosure are not limited to those mentioned above, and other objectives not mentioned herein will be clearly understood by those skilled in the art from the following description. To accomplish the above object, according to the present disclosure, there is provided a cervical plate for reoperation including: a main plate having a rectangular panel shape, and configured to be installed using one or more screws on a surgical site of a vertebra to support and fix the vertebra; and a subsidiary plate having a panel shape and configured to be installed using one or more screws on a reoperation site located in an adjacent area to the surgical site where the main plate is installed to support and fix the vertebra, and the main plate and the subsidiary plate are continuously connected when installed, and the subsidiary plate is installed while maintaining an installed state of the main plate. Moreover, the main plate and the subsidiary plate respectively include: a plurality of fastening holes, each of which have threads formed on an inner surface thereof to allow the one or more screws to penetrate in a screw manner and to be coupled to the vertebra. In this instance, the plurality of fastening holes formed in the main plate are for