12 results about "Vertebroplasty procedure" patented technology

This invention relates to a treatment device suitable for combined operative procedure of vertebroplasty and pediculoplasty. A treatment device includes a cylindrical driver capable of driving a screw into bone, an inner sleeve capable of being inserted into the driver, and a guide pin capable of being inserted into the inner sleeve, and is configured as follows. The screw includes on an outer wall (outer circumference) a thread that can tap into bone or cement, and a through hole that allows the inner sleeve to pass from a head to a tip. The driver can fit onto the head of the screw and when moved along the central axis and be joined to the screw, so as to transmit torque about the central axis to the screw. The inner sleeve includes a notch which protrudes, when the inner sleeve is inserted from the distal end of the driver in a state in which the screw and the driver are joined together, protrudes more proximally than a tip of the screw, preventing removal of the screw.

The percutaneous vertebroplasty combined instrument comprises an expandable supporting mesh bag, the expandable supporting mesh bag is provided with an outer-layer mesh bag body and an inner-layer mesh bag body, and the two ends of the outer-layer mesh bag body and the two ends of the inner-layer mesh bag body are closed to form an annular filling cavity and a center guiding cavity; the far end of the hollow distraction rod is detachably connected with the connector at the near end of the expandable supporting mesh bag, and an inner cavity of the hollow distraction rod is communicated with the central guide cavity; the directional injection core tube is slidably and rotatably arranged in the hollow opening rod in a penetrating manner, and the far end of the directional injection core tube extends into the central guide cavity and is provided with a radial directional discharge port; the rotary driving handle is arranged at the near end of the hollow distraction rod, is in transmission connection with the directional injection core tube and is used for driving the directional injection core tube to rotate so as to change the orientation of the discharge port. The double-layer structure of the expandable supporting mesh bag is used for achieving leakage prevention of the bone cement physical barrier, targeted filling is achieved through the rotatable directional injection core tube, the problems that in the prior art, the bone cement leakage risk is high, and the injection direction is uncontrollable are solved, and the safety and accuracy of an operation are improved.

The present invention is a treatment instrument comprising: an inner fixation instrument that is inserted into a vertebral body from a pedicle; and an outer tube, wherein the treatment instrument is configured as follows. The inner fixation instrument has: a head part having a first connection part connectable to the outer tube; and a shaft extending from the head part to a proximal end, wherein the shaft is provided with a tapping screw thread which is tapped and screwed into a bone hole formed in the pedicle. The outer tube has a second connection part connectable to the first connection part of the inner fixation instrument, wherein a connection state between the second connection part and the first connection part is maintained with respect to rotation in a direction opposite to a direction in which the inner fixation instrument is screwed by the tapping screw thread. As a result, it is possible to provide a treatment instrument with which the inner fixation instrument embedded in the body during vertebroplasty can be easily removed even if it becomes necessary to remove the inner fixation instrument in the future. In addition, in vertebroplasty, it is possible to stabilize a procedure for filling bone cement into the vertebral body from the pedicle and inserting the inner fixation instrument thereinto.

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.

This invention relates to a treatment device suitable for combined operative procedure of vertebroplasty and pediculoplasty. A treatment device includes a cylindrical driver capable of driving a screw into bone, an inner sleeve capable of being inserted into the driver, and a guide pin capable of being inserted into the inner sleeve, and is configured as follows. The screw includes on an outer wall (outer circumference) a thread that can tap into bone or cement, and a through hole that allows the inner sleeve to pass from a head to a tip. The driver can fit onto the head of the screw and when moved along the central axis and be joined to the screw, so as to transmit torque about the central axis to the screw. The inner sleeve includes a notch which protrudes, when the inner sleeve is inserted from the distal end of the driver in a state in which the screw and the driver are joined together, protrudes more proximally than a tip of the screw, preventing removal of the screw.

The present invention is a therapeutic instrument including a vertebral body perforation guide and a vertebral body processing tool, and is configured as follows. The vertebral body perforation guide is a hollow cylinder running along a central axis, and comprises a distal end spatula portion, an intermediate portion, and a terminus portion, in the stated order from the proximal side along the central axis. The distal end spatula portion opens in a direction perpendicular to the central axis. The terminus portion has an opening in a direction perpendicular to the central axis. The inner diameter of the intermediate portion in the up-down direction is greater than the inner diameter of the distal end spatula portion. The vertebral body processing tool is rod-shaped and has a curved portion that curves downward along the central axis; when the foregoing is inserted into the vertebral body perforation guide from the terminus portion along the central axis and has passed the intermediate portion along the central axis, the distal end protrudes out from the opening of the distal end spatula portion. Provided is a safe therapeutic instrument that, in percutaneous vertebroplasty for a fracture or surgery to preventatively reinforce a vertebral body with bone cement, makes it possible to accurately excavate an intended location to every corner within the vertebral body while also minimizing incision in the skin.

The present invention is a treatment instrument that includes an inner fixation instrument, an outer cylinder, and a cement separation instrument that are inserted into the vertebral body from a pedicle, the treatment instrument being configured as follows. The inner fixation instrument has a head, a shaft, and a first through-hole. The outer cylinder has a connection part that is connected to the head of the inner fixation instrument at the proximal end, a shaft, and a second through-hole that communicates with the first through-hole when connected to the inner fixation instrument. The cement separation instrument comprises a motion direction conversion mechanism that has a shaft inserted into a through-hole communicating therewith, has a separation instrument-side screw thread on the outer periphery of the shaft, and is engaged with a screw thread provided in the first or second through-hole, whereby the rotational force for rotation around a center axis is converted into a rectilinear force that causes the distal end of the cement separation instrument to travel straight along the central axis, with the inner fixation instrument or the outer cylinder connected to the inner fixation instrument acting as a fulcrum. As a result, it is possible to provide a treatment instrument with which the inner fixation instrument embedded in the body during a vertebral body formation operation can be easily removed even if it becomes necessary to remove the inner fixation instrument in the future.

The invention relates to the technical field of medical auxiliary tools, in particular to a bone interface processing tool in kucell disease vertebroplasty, which comprises a protective shell, one side of the protective shell is fixedly connected with a wireless control mechanism, the top of the protective shell is provided with an angle adjusting mechanism, and the bottom end of the protective shell is fixedly connected with a supporting mechanism. A monitoring mechanism is arranged at one end of the angle adjusting mechanism, and when the tool scrapes off inactive tissue such as capsule walls and dead bones, a bone-bone cement interface is roughened to increase the anchoring strength of bone cement, and meanwhile it needs to be considered that the tool can be placed through a centrum forming puncture needle channel, the angle adjusting mechanism can adjust the angle of the centrum forming puncture needle. In order to detect the pressure, the pressure detector is arranged, so that control detection is facilitated, the small electric telescopic rod stretches and retracts to push the pressure detector to stretch and retract, meanwhile, the scraper can be pushed to scrape off the capsule wall and the dead bone, and an alarm is given out for the situation that the pressure is too large through a warning indicator.

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.

A cylindrical granule made of a biocompatible metal material, in particular titanium or its alloys, for vertebroplasty operations has a cylindrical shape and includes a central cylindrical body connected at its ends to a first disc and to a second disc respectively, and a portion with a trabeculated structure, which extends around the central cylindrical body between the lower surface of the first disc and the upper surface of the second disc.

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.