US 12,440,249 B2
Trumpet expandable vertebral device and assembly thereof
Li-Sen Chen, Hsinchu (TW); Che-Yang Chao, Hsinchu (TW); and Wei-Tai Jao, Hsinchu (TW)
Assigned to BIOLIFE MEDICAL DEVICE INC., Hsinchu (TW)
Filed by BioLife Medical Device Inc., HsinChu (TW)
Filed on Sep. 19, 2023, as Appl. No. 18/469,916.
Application 18/469,916 is a continuation in part of application No. 17/120,194, filed on Dec. 13, 2020, abandoned.
Claims priority of application No. 111135949 (TW), filed on Sep. 22, 2022.
Prior Publication US 2024/0000488 A1, Jan. 4, 2024
Int. Cl. A61B 17/70 (2006.01)
CPC A61B 17/7097 (2013.01) [A61B 2560/02 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A trumpet expandable vertebral device, comprising:
a center shaft including a cylinder body and an expanding ring which are fixedly connected to each other, wherein the cylinder body has a near end which is connected to the expanding ring and a far end which is away from the expanding ring, wherein the far end has an outer thread; and
an expandable portion including an end collar, a connection part and a plurality of expandable plates, arranged in the listed order in a direction from the far end of the cylinder body to the near end of the cylinder body, wherein the expandable portion is located outside and surrounds the center shaft, and the connection part flexibly connects the end collar with the plurality of expandable plates;
wherein the expanding ring has an outer diameter larger than an outer diameter of the cylinder body and moves axially and linearly toward the end collar, to cause the plurality of expandable plates to expand outwardly in a trumpet-shaped manner, whereby tail ends of the plurality of expandable plates are displaced outwardly, increasing a spacing therebetween;
wherein the center shaft includes a hollow interior space for a bone filler material to be filled in and filled through the hollow interior space into a space between the center shaft and the plurality of expandable plates after the plurality of expandable plates are expanded, wherein after the bone filler material is solidified, the bone filler material assists maintaining a relative position between the center shaft and the plurality of expandable plates which are expanded and provides a strength to support an expanding degree of the plurality of expandable plates;
wherein the center shaft includes an inlet and an outlet which communicate with the hollow interior space, wherein the inlet is located at a same end where the outer thread is located and the outlet is located at a same end where the expanding ring is located, and the bone filler material flows in the hollow interior space through the inlet and flows out the hollow interior space through the outlet.