KR-102962043-B1 - THE INJECTOR OF BONE ANCHOR

KR102962043B1KR 102962043 B1KR102962043 B1KR 102962043B1KR-102962043-B1

Abstract

A screw anchor injector according to the present invention comprises a wire guide having a longitudinal direction that can be inserted into the body of a patient through an excised space and extends to a designated affected area, and a body having a certain length, wherein the front end surface and the rear end surface are open, and a hollow portion is formed along the longitudinal direction between the front end surface and the rear end surface so as to be inserted through, and a first module that moves along the longitudinal direction of the wire guide and is inserted into the designated affected area while the wire guide is inserted through, and a second module having a certain length and a guide hole formed where the front end surface and the rear end surface are connected inwardly and penetrate, wherein the wire guide is inserted through the guide hole and is moved along the longitudinal direction of the wire guide while the wire guide is inserted through, and the second module is inserted and coupled into the hollow portion of the first module that is inserted into the designated affected area while moving along the longitudinal direction of the wire guide so as to provide support to the affected area.

Inventors

김경태

Assignees

(주)서지오젠
경북대학교 산학협력단

Dates

Publication Date: 20260507
Application Date: 20240130

Claims (11)

A wire guide that can be inserted into the patient's body through an excised space and has a longitudinal direction extending to a designated affected area; A first module comprising a body having a certain length, wherein the front and rear ends are open, and a hollow portion is formed along the longitudinal direction between the front and rear ends so as to be inserted through, and which moves along the longitudinal direction of the wire guide and is inserted into the designated affected area while the wire guide is inserted through; and A second module having a predetermined length, wherein a guide hole is formed in which the front and rear ends are connected inwardly and penetrate, the wire guide is inserted through the guide hole, and the second module moves along the longitudinal direction of the wire guide while the wire guide is penetrated; Includes, The above second module is, The wire guide is moved along the longitudinal direction and inserted and coupled into the hollow portion of the first module inserted into the designated affected area, thereby providing support to the affected area. The first module is formed on one side along the longitudinal direction of the body and is open so that the hollow portion communicates with the outside, and includes a slit-shaped first insertion groove that is inserted laterally into the wire guide. The second module is formed along the longitudinal direction on one side of the second module so that the guide hole is open and communicates with the outside, and includes a slit-shaped second insertion groove that is inserted laterally into the wire guide. A screw anchor injector characterized in that when the second module is inserted into the first module, the second insertion groove is positioned to face one side of the inner surface of the hollow portion excluding the first insertion groove, so as to prevent the connection between the first module, the second module, and the wire guide from being indiscriminately released by blocking the open surface of the second insertion groove by the inner surface of the first module.
In paragraph 1, The above-mentioned injector is, The inner diameter of the inner space of the first module formed by the above-mentioned hollow portion and the outer diameter of the second module are formed to have the same width, and A screw anchor injector in which the second module is inserted and coupled into the hollow portion of the first module in a press fit manner.
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In paragraph 1, The first insertion groove above is, A screw anchor injector connecting the front and rear ends of the first module.
In paragraph 4, The first insertion groove having the slit shape above is, The width of the above slit shape is formed to be the same as the outer diameter of the above wire guide, and A screw anchor injector that allows the first module to be inserted laterally into the wire guide.
In paragraph 1, The above guide hole is, A screw anchor injector formed to have a width equal to the outer diameter of the wire guide.
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In paragraph 1, The above-mentioned slit-shaped second insertion groove is, A screw anchor injector in which the width of the slit shape is equal to the outer diameter of the wire guide.
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In paragraph 1, The above-mentioned first module is, A first guard unit that extends and protrudes along the outer perimeter based on the rear cross-section to prevent the first module from being excessively inserted into a designated affected area, as well as to allow the user to easily grip it; A screw anchor injector including additional screw anchors.
In paragraph 1, The above second module is, A second guard unit formed to extend rearward based on the rear end surface, with one end bent to prevent excessive insertion into the first module and to allow the user to easily grip it; A screw anchor injector including additional screw anchors.

Description

Bone Anchor Injector The present invention relates to a screw anchor injector, and more specifically, to a screw anchor injector that is inserted laterally into a wire guide and can be inserted into a designated affected area. Generally, in the treatment of spine-related diseases, indirect treatment methods through physical therapy and direct treatment methods involving the attachment of separate fixation devices to the damaged spinal area to correct and stabilize the spine are implemented. In other words, physical therapy is performed for mild spinal conditions, but when the disease is severe in the cervical, thoracic, lumbar, sacral, and intervertebral discs that make up the spine, treatment is carried out using a separate spinal fixation device. A commonly used spinal fixation device is composed of a pedicle (sacral) screw inserted into the pedicle of a vertebral bone or the sacrum at a predetermined angle and depth to correct the damaged spinal portion to a normal state and fix it without movement, a spinal rod positioned on one side of the spinal portion, and a fixation cap or connecting part that links and fastens the spinal rod and the pedicle screw. To treat the damaged spinal section, pedicle screws are first inserted and fixed into the pedicles of the vertebrae or the sacrum in the appropriate direction and position. Then, a spinal rod is used to correct the spinal section to a normal state, and the treatment is completed by securing the spinal rod and the fixation screw using a fixation cap or connecting part. Due to the recent increase in the elderly population, screw fixation procedures for patients with severe osteoporosis are on the rise; however, with conventional screw fixation, bone around the screws fixed to the bone may dissolve over time after the procedure. This phenomenon is known as halo formation or bone cavitation, which leads to the loosening of the screws. Therefore, nearly half of patients who have had screws inserted may require re-operation due to adjacent segment degeneration caused by the screw fixation, placing a physical and economic burden on the patients. To solve these problems, anchors are used, and the aforementioned issues are resolved by first inserting the anchor at the location before inserting the screw. Meanwhile, there is a need to develop tools to accurately and quickly insert anchors into desired locations. FIG. 1 is an exemplary diagram showing the configuration of a screw anchor injector according to an embodiment of the present invention; FIG. 2 is a cross-sectional view showing cross-section A shown in FIG. 1 in a screw anchor injector according to an embodiment of the present invention; FIG. 3 is a cross-sectional view showing cross-section B shown in FIG. 1 in a screw anchor injector according to an embodiment of the present invention; FIG. 4 is an exemplary diagram showing the application of a screw anchor injector according to an embodiment of the present invention; FIG. 5 is an exemplary diagram showing the insertion of a screw anchor injector according to an embodiment of the present invention; FIG. 6 is a cross-sectional view showing cross-section C shown in FIG. 5 in a screw anchor injector according to an embodiment of the present invention; FIG. 7 is an exemplary diagram showing a first guard unit in a screw anchor injector according to an embodiment of the present invention; and FIG. 8 is an exemplary diagram showing a second guard unit in a screw anchor injector according to an embodiment of the present invention. Preferred embodiments of the present invention, in which the objectives of the present invention can be specifically realized, will be described below with reference to the attached drawings. In describing these embodiments, the same names and reference numerals are used for identical components, and additional explanations thereof will be omitted. The present invention relates to a screw anchor injector that is inserted laterally into a wire guide and can be inserted into a designated affected area, and in particular, to a screw anchor injector used in surgery for spinal fixation to enable stable fixation of the designated affected area, i.e., between the vertebrae. A screw anchor injector according to one embodiment of the present invention, as illustrated in FIG. 1, comprises a wire guide (300) having a length that can be inserted into the body of a patient through an excised space and extending to a designated affected area, and a body having a length that has a front end and a rear end, and a hollow portion (110) formed along the length direction of the body between the front end and the rear end, i.e., inside the body, through which the front end and the rear end of the body penetrate and through which the wire guide (300) is inserted, and a first module (100) that moves toward the designated affected area along the length direction of the wire guide (300) while the wire guide (300) is penetrated and is inserted into the design