Abstract: An expandable spinal implant includes a flexible body, an expander component, a fastener and an anti-reverse mechanism. The flexible body includes a base portion and flexible arms each having a free end and a fixed end connecting the base portion. The flexible arms surround an installation space. The expander component is partially in the installation space and exerts pressure on the free ends to move the free ends away from one another. The fastener includes a head portion and a screw portion. The head portion and the expander component are at opposite sides of the base portion. The screw portion passes through the base portion and screwed into the expander component. The anti-reverse mechanism is fixed to the base portion and blocks one side of the head portion located away from the expander component. The anti-reverse mechanism and the expander component are at opposite sides of the base portion.

Abstract: This disclosure relates to a surgical tool configured for holding an implant includes an inner rod and a sleeve. The inner rod includes a rod portion and a holding portion. The holding portion is located at one end of the rod portion and has a first accommodation space configured for accommodating at least part of the implant. The sleeve includes a sleeving portion and a retaining portion. The sleeving portion is slidably sleeved on the rod portion of the inner rod. The retaining portion is located at one end of the sleeving portion and selectively presses against the holding portion. The inner rod further includes at least one fin portion protruded from the holding portion and located in the first accommodation space for being inserted into at least one slot of the implant.

Abstract: A cell recovery method including the following steps is provided. A cell culture carrier module is provided. The cell culture carrier module includes at least one cell culture carrier. The cell culture carrier is compressed into a first structure. Cell culture is performed by using the cell culture carrier exhibiting the first structure. The cell culture carrier is stretched from the first structure to a second structure. The first structure and the second structure are different structures. Cell recovery is performed by using the cell culture carrier exhibiting the second structure.

Abstract: A cell culture carrier module, a bioreactor and a cell recovery method are provided. The cell culture carrier module includes at least one cell culture carrier capable of transforming between a two dimensional structure and a three dimensional structure. The cell culture carrier exhibits the two dimensional structure in a loosened state and exhibits the three dimensional structure in a compressed state.