# US 10,441,320 B2 · Spine correction apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,320 B2 - Document ID: US10441320B2 - Status: Granted - Kind: B2 - Application number: 15/456,616 - Filed: 2017-03-13 - Published: 2017-09-21 - Granted: 2019-10-15 - Earliest claimed: 2016-03-16 - Assignees: Chang Gung Memorial Hospital, Linkou - Applicants: Chang Gung Memorial Hospital, Linkou - Inventors: Po-Liang Lai; Jaw-Lin Wang; Zong-Xing Chen - Web page: https://patentgrep.com/patent/US10441320B2 ## CPC - A61B 17/705: {for linking adjacent ends of longitudinal elements} - A61B 17/701: {Longitudinal elements with a non-circular, e.g. rectangular, cross-section (A61B17/7005, A61B17/7007 take precedence)} - A61B 17/7014: {with means for adjusting the distance between two screws or hooks} - A61B 2017/00477: {Coupling (A61B2017/0046 takes precedence)} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A spine correction apparatus is disclosed, comprising: a first rod member having a first zone; a second rod member having a second zone; a first ring member having a first through-hole; and a second ring member having a second through-hole; wherein the first zone contacts the second zone, the first rod member and the second rod member are inserted into the first through-hole and the second through-hole, the first through-hole is fixed to the first rod member, and the second through-hole is fixed to the second rod member. The spine correction apparatus lowers the requirement for repeated surgeries and achieves the purpose of self-correction. ## Claims ### Claim 1 A spine correction apparatus, comprising: a first rod having a first zone; a second rod having a second zone that is configured to contact the first zone; a first ring member having a first through-hole; and a second ring member having a second through-hole, wherein, the first rod and the second rod pass through the first through-hole of the first ring member and through the second through-hole of the second ring member, in which the first ring member is fixed to the first rod, and the second ring member is fixed to the second rod; the first zone has a plurality of first raised teeth, and the second zone has a plurality of second raised teeth, in which the first raised teeth and the second raised teeth are configured to engage with each other; each of the first raised teeth is consist of a first top edge, a first lateral, and a second lateral, in which the first lateral is connected to the second lateral by means of the first top edge, and a first included angle formed between the first lateral and a major axis direction of the first rod ranges between 85 and 95 degrees; each of the second raised teeth is consist of a second top edge, a third lateral, and a fourth lateral, in which the third lateral is connected to the fourth lateral by means of the second top edge, and a second included angle formed between the third lateral and a major axis direction of the second rod ranges between 85 and 95 degrees; and the second lateral and the fourth lateral are inclines configured to allow relative movement between the first rod and the second rod after the first raised teeth and the second raised teeth engage with each other. ### Claim 2 (depends on 1) The spine correction apparatus of claim 1, wherein the second lateral is configured to face the fourth lateral. ### Claim 3 (depends on 1) The spine correction apparatus of claim 1, wherein the first rod and the second rod are such installed that they are parallel to each other. ### Claim 4 (depends on 1) The spine correction apparatus of claim 1, wherein the first rod and the second rod each have a plurality of fixing components. ### Claim 5 (depends on 1) The spine correction apparatus of claim 1, wherein a spring element is provided between the first ring member and the second rod, or between the second ring member and the first rod. ### Claim 6 (depends on 1) The spine correction apparatus of claim 1, further comprising: a third rod having a fourth zone; a third ring member having a third through-hole; and a fourth ring member having a fourth through-hole, wherein, the first rod further has a third zone that is configured to contact the fourth zone, and after the first rod and the third rod pass through the third through-hole of the third ring member and the fourth through-hole of the fourth ring member, the third ring member is fixed to the third rod, and the fourth ring member is fixed to the first rod. ### Claim 7 (depends on 6) The spine correction apparatus of claim 6, wherein the third zone has a plurality of third raised teeth, and the fourth zone has a plurality of fourth raised teeth, in which the third raised teeth and the fourth raised teeth are configured to engage with each other. ### Claim 8 (depends on 1) The spine correction apparatus of claim 1, wherein the first rod has a first cross-section in its major axis direction, and the second rod has a second cross-section in its major axis direction, in which the first cross-section is configured to face the second cross-section. ### Claim 9 (depends on 8) The spine correction apparatus of claim 8, wherein the first cross-section and the second cross-section are equal in terms of area. ### Claim 10 (depends on 1) The spine correction apparatus of claim 1, wherein an acute angle formed between the second lateral and the major axis direction of the first rod, and an acute angle formed between the fourth lateral and the major axis direction of the second rod. ### Claim 11 A spine correction kit, comprising: a first rod having a first zone; a second rod having a second zone that is configured to contact the first zone; a first ring member having a first through-hole for receiving the first rod and the second rod; and a second ring member having a second through-hole for receiving the first rod and the second rod; wherein the first zone has a plurality of first raised teeth, and the second zone has a plurality of second raised teeth, in which the first raised teeth and the second raised teeth are complementary with each other; each of the first raised teeth consists of a first top edge, a first lateral, and a second lateral, in which the first lateral is connected to the second lateral by means of the first top edge, a first included angle formed between the first lateral and a major axis direction of the first rod ranges between 85 and 95 degrees; each of the second raised teeth consists of a second top edge, a third lateral, and a fourth lateral, in which the third lateral is connected to the fourth lateral by means of the second top edge, a second included angle formed between the third lateral and a major axis direction of the second rod ranges between 85 and 95 degrees; and the second lateral and the fourth lateral are inclines configured to allow relative movement between the first rod and the second rod after the first raised teeth and the second raised teeth engage with each other. ### Claim 12 (depends on 11) The spine correction kit of claim 11, further comprising a plurality of fixing components for fixing the first rod and the first ring member together, for fixing the second rod and the second ring member together, for fixing the first rod and a target spine together, or for fixing the second rod and the target spine together. ### Claim 13 (depends on 11) The spine correction kit of claim 11, further comprising a spring element provided between the first ring member and the second rod, or between the second ring member and the first rod. ### Claim 14 (depends on 11) The spine correction kit of claim 11, further comprising: a third rod having a fourth zone, wherein the first rod further has a third zone that is configured to contact the fourth zone. ### Claim 15 (depends on 11) The spine correction kit of claim 11, wherein the first rod has a first cross-section in its major axis direction, and the second rod has a second cross-section in its major axis direction, in which the first cross-section is configured to face the second cross-section. ### Claim 16 (depends on 15) The spine correction kit of claim 15, wherein the first cross-section and the second cross-section are equal in terms of area.