27 results about "Vertebroplasty procedure" patented technology

Disclosed is a granule made of biocompatible metallic material, in particular made of titanium or titanium alloys, for vertebroplasty operations. The granule has a spherical shape and includes a central core with a solid structure, also spherical, having an outer surface from which a first diametrical rib and a second diametrical rib also having a solid structure, protrude. The ribs are advantageously arranged according to two diameters orthogonal to each other. The granule also includes a portion having a trabeculated structure which extends between the outer surface of the central core and the outer surface of the granule itself.

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 invention discloses a patient-specific finite element model-based vertebroplasty optimization method and a related device. The method comprises the following steps of: 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 tetrahedral finite element grids, endowing each finite element unit with bone material attributes according to pixel values of CT scanning images, and endowing intervertebral disc and ligament soft tissue structures with soft tissue material attributes; determining an optimal bone cement injection path and an optimal bone cement injection amount of the tetrahedral finite element mesh; and simulating the vertebroplasty in the tetrahedral finite element mesh, predicting the stress distribution of the vertebrae, the rigidity of the vertebrae and the stress change of the adjacent vertebrae after the operation, and presenting the simulation result of the simulated vertebroplasty in a three-dimensional visual form. According to the method, personalized optimization and prediction of preoperative simulation of the vertebroplasty are realized by constructing the patient-specific finite element model, and an efficient auxiliary reference operation scheme is provided for an operator.

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.

An integrated injection implementation method and device of an injectable bone substitute in vertebroplasty, belonging to the field of medical devices. A shape memory alloy guide needle is inserted into a hollow tube for thermal pre - shaping, and the two are integrally and synchronously pushed into the vertebral body. Under the guidance of the shape memory alloy guide needle, the hollow tube rapidly rebounds to its original curvature through internal stress, forming the boundary of the filling space for the injectable bone substitute or acting as a boundary fence for the filling space; the injectable bone substitute is injected through the hollow tube to the designated position; at the designated part in the vertebral body, the injectable bone substitute fills the hollow tube and the filling space surrounded by it. It enables the injection area of the injectable bone substitute to be programmable, and integrates multiple steps such as puncture, distraction, injection of implants and bone cement, and shaping in vertebroplasty; all steps are carried out synchronously, greatly optimizing the operation process, shortening the operation time, and reducing the operation difficulty. It can be widely used in the design and manufacturing fields of orthopedic implant injection devices.

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.

The utility model discloses an expanding device for a cancellous bone of a centrum in a vertebroplasty. The expanding device comprises an outer fixed pipe fitting, an inner movable rod piece and a foldable drill bit, the outer fixing pipe fitting is arranged in a working channel of a target vertebral body; a foldable drill bit is arranged at the front end of the inner movable rod piece, the foldable drill bit is inserted from the first end of the outer fixing pipe piece and can be positioned after moving along the outer fixing pipe piece, and after the foldable drill bit extends out of the second end of the outer fixing pipe piece, the flare angle of the end of the foldable drill bit is gradually increased along with reduction of the overlapping size of the foldable drill bit and the outer fixing pipe piece. The end part of the foldable drill bit is provided with a plurality of concave contact surfaces, and the concave contact surfaces are used for forming a cavity with a rough interface in the cone when the foldable drill bit is screwed in. The centrum cancellous bone expansion device can perform accurate centrum cancellous bone expansion, promote uniform dispersion of bone cement, increase the contact area of the bone cement and the cancellous bone, prevent displacement of the bone cement after an operation, simplify operation steps and shorten operation time.

A surgical tool for repairing vertebral bodies according to at least one embodiment of the present disclosure includes an access cannula having a proximal end and a distal end, a guidewire, wherein a distal end of the guidewire is inserted through the proximal end of the access cannula into a vertebral body, and an inflatable balloon tamp (IBT), wherein the IBT is fed on a proximal end of the guidewire and into the vertebral body.

The invention discloses a power-driven channel device for vertebroplasty, the channel device is composed of a central structure, a sleeve and a clamping device, the central structure and the clamping device are located in the sleeve, the central structure penetrates through the clamping device through a middle through hole of the clamping device, and the clamping device is connected with the side wall of the sleeve. The central structure comprises a grinding head and a rod body, the rear end of the rod body can be externally connected with a power system, the power system drives the central structure, the sleeve and the clamp holder to rotate, and when the reducing area of the clamp holder abuts against the inner wall of the second-class conical pipe of the sleeve, the interior of the clamp holder pressurizes the central structure and is fixedly connected with the clamp holder and the central structure. Therefore, the central structure, the sleeve and the clamping device are connected into a whole, and under the driving of the power system, the channel device which is integrally formed rotates along a planned path at a high speed to grind sclerotin and establish a working channel, so that time and labor are saved, and the establishment efficiency of the working channel is improved.

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 invention relates to a particle made of a biocompatible metallic material, in particular titanium or a titanium alloy, for use in vertebroplasty operations. The particle (10) according to the invention is characterized in that it has a spherical shape and comprises a central core (13) with a solid structure, said central core also being spherical and having an outer surface (13a) from which protrude a first radial rib (11) and a second radial rib (12), also with a solid structure. The radial ribs (11, 12) are arranged according to two mutually perpendicular diameters. The particle (10) according to the invention also comprises a portion (14) with a trabecular structure, which portion (14) extends between the outer surface (13a) of said central core (13) and the outer surface (10a) of the particle itself.

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.

The invention relates to the technical field of medical apparatus and instruments, and provides a radiation particle placement net bag for vertebroplasty and a use method thereof.The net bag comprises a double-layer net bag, the double-layer net bag comprises an inner net body and an outer net body which are connected in an inner-outer sleeving mode, the inner net body defines a first cavity, and the inner net body and the outer net body are connected at intervals to form a plurality of second cavities arranged in the circumferential direction; one end of the same side of the first cavity and the second cavity is closed through an end head, and the other end injects bone cement into the first cavity through an injection connecting mechanism; radioactive particles are placed in the second cavity through a placement mechanism. According to the scheme, the mesh bag has clinical demand adaptability and can be flexibly adjusted and accurately controlled, effective combination of radioactive particle implantation and vertebroplasty is achieved, and treatment safety and effectiveness are improved.

A percutaneous stent expansion and bone scraping vertebroplasty device relates to the technical field of medical devices. The device includes a targeting screw, an expansion stent, an inner sleeve, and an outer sleeve; the nail rod of the targeting screw is a hollow rod body with an external thread, and a target hole and a plurality of infiltration holes are provided on the circumference of the nail rod, and a through hole connecting the nail rod cavity is provided on the nail cap of the targeting screw; the expansion stent is composed of a plurality of expansion mesh tubes with a mesh wall and elasticity, the inner sleeve and the outer sleeve are both elastic tubes, and the outer sleeve can be inserted into the inner cavity of the nail rod of the targeting screw, the inner sleeve can be inserted into the tube cavity of the outer sleeve, and the expansion stent can be inserted into the tube cavity of the inner sleeve after radial compression; there are two symmetrically arranged direction control lines on the inner sleeve, which are used to control the front end of the inner sleeve to align with the target. The device provided by the present invention is used for vertebroplasty.

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 present disclosure provides biocompatible granule structures and associated assemblies and methods. These biocompatible granule structures are introduced into a void or space in a bone structure or between bone structures disposed on a flexible elongate structure to partially fill the volume and promote bony ingrowth and healing in a variety of surgical applications, such as kyphoplasty and vertebroplasty procedures and the like. The biocompatible granule structures are made of a bony substance or a biocompatible metallic, ceramic, or polymeric material and provide superior migration, interlocking behavior, and bony purchase and ingrowth properties.

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.

The utility model discloses puncture equipment for assisting vertebroplasty, and relates to the technical field of medical instruments, in particular to puncture equipment for assisting vertebroplasty, which comprises a placing plate and a puncture needle. According to the auxiliary puncture equipment for the vertebroplasty, a first rectangular frame, a first servo motor, a first screw rod, a first threaded ring block, a first sliding block, a supporting plate, a second rectangular frame, a second servo motor, a second screw rod, a second threaded ring block and a second sliding block are arranged; the auxiliary puncture equipment for vertebroplasty has the effect of improving the flexibility of adjustment of the puncture position, through cooperation of a first screw rod and a first threaded ring block, the puncture position can be conveniently moved and adjusted in the left-right direction, through cooperation of a second screw rod and a second threaded ring block, the puncture position can be conveniently moved and adjusted in the front-back direction, and the puncture effect is improved. The flexibility of adjusting the puncture position is improved, and the purpose of improving the practicability is achieved.

Methods for controlling microbial organisms and curing polymeric resins via targeted proton beam irradiation are disclosed. In one aspect, microbial control is achieved by irradiating a target region with a proton beam configured to deliver a precise Bragg Peak dose, effectively eliminating pathogens while minimizing damage to surrounding tissues. In another aspect, the invention details methods for curing liquid acrylic bone cement during orthopedic procedures including kyphoplasty, vertebroplasty, and screw fixation. The proton beam initiates polymerization without chemical catalysts, controlling heat generation and enhancing precision. The invention further provides for activating bioactive therapeutic precursor molecules and visualizing energy deposition using leuco-crystal violet dye. These integrated approaches enhance therapeutic outcomes across multiple medical applications.

The invention relates to the technical field of medical instruments, in particular to a radioactive particle and bone cement injection device which comprises a tube seat and a pushing injection tube fixed to the bottom of the tube seat, and the tube seat is provided with a radioactive particle filling mechanism and a bone cement injection opening. And the injection pipe comprises a radioactive particle channel and a bone cement channel which are respectively communicated with the radioactive particle filling mechanism and the bone cement injection port. Combined use of radiation particle implantation and bone cement injection in the vertebroplasty can be achieved, and the device is suitable for vertebral tumor treatment.

The invention relates to bone cements for vertebroplasty. Proposed is a bone cement containing a biocompatible polyurethane polymer and consisting of two components which produce a curable composition when mixed, wherein the first component is a synthesized viscous prepolymer which has a free isocyanate group (NCO) content of 8-10 wt% and is produced from polypropylene glycol with an average molecular mass of 1000 and 4,4'-diisocyanate diphenylmethane, with the addition of an effective amount of zirconium oxide in an amount of 15-40 wt% of the total mass of the first component, in the presence of a synthesis catalyst, namely dibutyltin dilaurate, and the second component is glycerine with a curing catalyst dissolved therein, namely diazabicyclooctane or a mixture of diazabicyclooctane and triethanolamine.

The operating table comprises an operating table body, guide supporting mechanisms are installed on the two sides of the operating table body, a movable supporting frame is fixed to the tops of the two guide supporting mechanisms, the movable supporting frame is of a U-shaped structure, and radiography equipment is detachably installed at the bottom of the middle of the movable supporting frame; a mounting clamping groove is formed in the upper surface of the operating bed body, a supporting and adjusting mechanism is mounted on the inner side of the mounting clamping groove and comprises a regulation and control motor, a regulation and control double-end lead screw is fixed to the output shaft end of the regulation and control motor, regulation and control sliding plates are arranged on the outer sides of the two ends of the regulation and control double-end lead screw in a sleeving mode, and the two regulation and control sliding plates are in threaded transmission with the regulation and control double-end lead screw. By changing the radian of the elastic supporting rods, the height difference between the adjusting and controlling supporting arc-shaped plates is changed, so that the bending radian of the rubber isolation pad is changed, the expansion degree of the back of a patient is adjusted and controlled according to the body types of different patients, and the spine of the patient is completely expanded.