3 results about "Vertebroplasty procedure" patented technology

The application provides a multifunctional protective film system for vertebroplasty, comprising: a protective film with a multilayer structure, which has a composite film wall, the composite film wall at least comprising: an intermediate support layer, which is a three-dimensional porous mesh stent, and pores of the three-dimensional porous mesh stent are fixedly filled with phase change microcapsules; an inner layer, which covers an inner surface of the intermediate support layer, and an inner surface of the inner layer is provided with an anchoring structure; a delivery sheath; a push rod, which is slidably arranged in the delivery sheath; and a releasable connecting structure, which is arranged between a proximal end of the protective film and a distal end of the delivery sheath, and is used for unlocking or breaking the connection of the protective film to the delivery sheath, and is configured to release the protective film under the pushing of the push rod. The application can systematically solve three problems of leakage, thermal damage and interface instability, and can realize accurate and controllable release.

The specification discloses a power-driven channeler for vertebroplasty, which is composed of a central structure, a sleeve and a holder, the central structure and the holder being located in the sleeve, the central structure passing through the holder through a middle through hole of the holder, and the holder being connected with a side wall of the sleeve. The central structure comprises a grinding head and a rod body, the rear end of the rod body being externally connected with a power system, the power system driving the central structure, the sleeve and the holder to rotate, when a variable-diameter area of the holder abuts against an inner wall of a second type of conical tube of the sleeve, the interior of the holder pressurizes the central structure, and the holder and the central structure are fixedly connected. In this way, the central structure, the sleeve and the holder are connected as a whole, and under the driving of the power system, the channeler composed of the whole rotates at a high speed along a planned path to grind bone to establish a working channel, time and labor are saved, and the establishment efficiency of the working channel is improved.

The application discloses a vertebroplasty optimization method based on a patient-specific finite element model and related devices, wherein the method comprises the following steps: constructing a patient-specific three-dimensional spine model according to a vertebral bone structure and a vertebral soft tissue structure; discretizing the patient-specific three-dimensional spine model into a tetrahedral finite element grid, assigning bone material properties to each finite element unit according to pixel values of a CT scan image, and assigning soft tissue material properties to intervertebral disc and ligament soft tissue structures; determining an optimal bone cement injection path and an optimal bone cement injection amount of the tetrahedral finite element grid; simulating vertebroplasty in the tetrahedral finite element grid, predicting stress distribution of a vertebra after the vertebroplasty, rigidity of the vertebra, and stress changes of adjacent vertebrae, and presenting simulation results of the simulated vertebroplasty in a three-dimensional visual form. The application realizes individualized optimization and preoperative simulation of vertebroplasty by constructing a patient-specific finite element model, and provides an efficient auxiliary reference surgical plan for a surgeon.