| 摘要 |
An implantable device may include a barrel, the barrel having an upper portion and a lower portion. The implantable device may further include an actuator assembly disposed in the barrel, the actuator assembly comprising a front ramped actuator in engagement with the barrel, a rear ramped actuator in engagement with the barrel, and a central screw that extends from the rear ramped actuator through the front ramped actuator. The implantable device may further include a first plate having multiple projections extending from one side of the first plate, the first plate comprising a first portion that extends from the upper portion and a second portion that extends form the lower portion. The implantable device may further include a second plate having multiple projections extending from one side of the second plate, the second plate configured to be received on the central screw. The barrel may be configured to transition from a collapsed form having a first height to an expanded form having a second height and wherein the second height is greater than the first height. |
| 主权项 |
1. An implantable device, comprising:
a barrel, the barrel having an upper portion and a lower portion; an actuator assembly disposed in the barrel, the actuator assembly comprising a front ramped actuator in engagement with the barrel, a rear ramped actuator in engagement with the barrel, and a central screw that extends from the rear ramped actuator through the front ramped actuator; a first plate having multiple projections extending from one side of the first plate, the first plate comprising a first portion that extends from the upper portion and a second portion that extends form the lower portion; a second plate having multiple projections extending from one side of the second plate, the second plate configured to be received on the central screw, wherein the second plate comprises an upper portion, a lower portion, a central portion connecting the upper portion and the lower portion, and a trunnion assembly disposed in an opening in the central portion, wherein the trunnion assembly comprises a housing for receiving the central screw, a pair of chambers on either side of the opening, and a pair of ratchet pawls, each of the ratchet pawls being individually disposed in one of the chambers and configured to engage the central screw in the opening, wherein the barrel is configured to transition from a collapsed form having a first height to an expanded form having a second height and wherein the second height is greater than the first height. |
