24 results about "Spinal fusion" patented technology

The present invention relates to a spinal fusion cage which is inserted between vertebral bodies in a state where the cage has the lowest height, is height-adjustable in the inserted state, and can simplify a height adjustment mechanism, thus making it possible to replace cages having heights in a certain range by a single cage. Therefore, manufacturers can reduce product groups that need to be produced, and can also reduce product stock. Further, in contrast to the conventional cages having predetermined heights at regular intervals, the height of the inventive cage can be linearly adjusted according to the distance between the vertebral bodies of a patient, and thus a surgery can be performed using the cage adjusted to an optimum height according to the patient's condition.

The present disclosure provides adjustable spinal devices, instruments for implanting the spinal devices, methods for adjusting the height and lordosis angles of the spinal devices and methods for implanting such devices. An adjustable spinal fusion device includes an upper plate component having an outer surface for placement against an endplate of a vertebral body and a lower plate component having an outer surface for placement against an endplate of a vertebral body. The device further includes a first translation member configured to move longitudinally relative to the upper and lower plates to adjust a distance between the upper and lower plates and a second translation member configured to move longitudinally relative to the upper and lower plates to adjust an angle between the upper and lower plates.

A system for performing posterior spinal fusion at a zygopophyseal joint comprises an implant device (1) and a fixture device (2) thereof. The implant device (1) is in the form of an element comprising an opening (12) for receiving bone graft material, intended to be inserted into a pre-prepared lacuna (5) at a zygopophysis joint to be fixed, while the fixation device is in the form of a transarticular screw (2) for pressurizing the implant device (1) in the lacuna, comprising a threaded distal end portion (20) intended to be screwed into at least the bone material (3) downstream of the implant device (1), the proximal end portion (21) of which is shaped to abut against or be screwed into the bone material (4) upstream of the implant device (1).

The present disclosure provides adjustable spinal devices, instruments for deploying the spinal devices, methods for adjusting the height and / or lordosis angles of the spinal devices, and methods for implanting such devices. An adjustable spinal fusion device includes an upper plate having an outer surface for placement against a first vertebral body and a lower plate having an outer surface for placement against a second vertebral body. The device further includes a translation member configured to move longitudinally relative to the upper and lower plates to adjust an angle between the upper and lower plates and a locking member coupled to the translation member. The locking member is movable between an unlocked position, wherein the translation member is capable of moving in the longitudinal direction, and a locked position, wherein the translation member is inhibited from moving in the longitudinal direction.

The utility model provides a full-porous spine fusion cage with an extremely-small curved surface structure, and belongs to the technical field of medical instruments. The utility model comprises an extremely small curved surface porous structure which is a three-period spiral curved surface; the bone grafting windows are arranged on the pair of cambered surfaces of the extremely-small-curved-surface full-porous structure and are used in cooperation with bone grafting; and the instrument clamping area is arranged in the middle of the bottom surface of the extremely-small-curved-surface porous structure, is communicated with the bone grafting window and is used for clamping the spinal fusion cage by an instrument. According to the utility model, an extremely small curved surface porous structure formed by a three-period spiral curved surface is adopted, the comprehensive mechanical property is excellent, and the static compression strength and the fatigue strength are improved by more than 50%; the matching degree of the elasticity modulus and the human skeleton is high, the stress load is uniformly distributed, the mechanical reliability is high, and the anti-fatigue capability is strong; no compact solid part exists, so that the contact area with bones and the bone tissue ingrowth space are increased; blood is rapidly sucked into the pore channel through the capillary effect, bone fusion and vascularization are facilitated, and bone conduction, bone fusion and bone ingrowth performance is outstanding.

The application discloses a minimally invasive spinal fusion system based on artificial intelligence, which comprises the following steps: after the deviation warning signal is obtained, the instrument trajectory data is subjected to smoothing filtering processing, the filtered trajectory sequence is obtained, and the filtered trajectory sequence is matched with the updated model grid; the dynamic path adjustment parameter is determined and is built into the surgical robot to adjust the vibration frequency parameter and improve the control experience level; the subsequent image data is processed by using the iterated model version, the temporary deviation caused by the instrument shaking is determined, and the temporary deviation is corrected through the path planning algorithm; the corrected navigation instruction sequence is generated, and the real-time feedback mechanism is applied to transfer the intuitive deviation information; the surgical instrument is driven to adjust the movement through the navigation instruction sequence, the adjusted trajectory data is obtained, and the deviation of the optimized path is compared and optimized in a cycle; if the deviation continuously falls below the threshold value, the current model is maintained, and the final navigation model is output to ensure reliable consistency.

The present invention relates to a spinal fusion cage which is inserted between vertebral bodies in a state where the cage has the lowest height, and is height-adjustable in the inserted state, whereby cages having fixed heights within a predetermined range can be replaced by a single cage. Therefore, manufacturers can reduce product groups that need to be produced, and can also reduce product stock. Further, in contrast to the conventional cages having predetermined heights at regular intervals, the height of the inventive cage can be linearly adjusted according to the distance between the vertebral bodies of a patient, and thus a surgery can be performed using the cage adjusted to an optimum height according to the patient's condition.

The present disclosure provides adjustable spinal devices, instruments for deploying the spinal devices, methods for adjusting the height and / or lordosis angles of the spinal devices, and methods for implanting such devices. An adjustable spinal fusion device includes an upper plate having an outer surface for placement against a first vertebral body and a lower plate having an outer surface for placement against a second vertebral body. The device further includes a translation member configured to move longitudinally relative to the upper and lower plates to adjust an angle between the upper and lower plates and a locking member coupled to the translation member. The locking member is movable between an unlocked position, wherein the translation member is capable of moving in the longitudinal direction, and a locked position, wherein the translation member is inhibited from moving in the longitudinal direction.

This invention provides a spinal fusion device, belonging to the technical field of spinal fusion devices, comprising: support blocks, with a support space formed between two support blocks; a first force-bearing structure located in the support space, the first force-bearing structure including a first force-bearing member, the two support blocks being connected through the first force-bearing member; and a second force-bearing structure including two second force-bearing members, both of which are located in the support space and respectively connected to the two support blocks. This invention employs a dual-stage force-bearing structure design. In the initial compression stage, only the first force-bearing member provides elastic support, and the relatively small elastic modulus provides a certain amount of strain, promoting osseointegration. When the compression displacement increases to the point where the second force-bearing members contact, the dual structures work together to bear the load, significantly improving the overall compressive strength and stability. The three-period minimal curved surface has an extremely high specific surface area, which is conducive to cell attachment, proliferation, and differentiation, and the zero average curvature avoids stress concentration.

The invention discloses a minimally invasive spine fusion system based on artificial intelligence, and the system comprises the steps: obtaining a deviation early warning signal, carrying out the smooth filtering of instrument track data, obtaining a filtered track sequence, and matching the filtered track sequence with an updated model grid, dynamic path adjustment parameters are determined and built in the surgical robot to adjust vibration frequency parameters to improve the control experience level; processing subsequent image data by adopting the iterated model version, determining temporary deviation caused by instrument shaking, correcting the temporary deviation through a path planning algorithm, generating a corrected navigation instruction sequence, and feeding back mechanism application in real time to transmit visual deviation information; and driving the surgical instrument to adjust motion through the navigation instruction sequence, acquiring adjusted trajectory data, circularly comparing the deviation from the optimized path, and if the deviation is judged to be continuously lower than a threshold value, maintaining a current model and outputting a final navigation model to ensure reliability and consistency.

The invention provides a spinal fusion cage, and belongs to the technical field of spinal fusion cages, the spinal fusion cage comprises two supporting blocks, and a supporting space is formed between the two supporting blocks; the first stress structure is located in the supporting space, the first stress structure comprises a first stress piece, and the two supporting blocks are connected through the first stress piece; and the second stress structure comprises two second stress pieces, and the two second stress pieces are both located in the supporting space and connected with the two supporting blocks correspondingly. The double-stage stress structure design is adopted, in the initial compression stage, only the first stress piece provides elastic support, certain strain is provided through the small elastic modulus, and osseointegration is promoted; when the compression displacement is increased to contact with the second stress piece, the double structures cooperatively bear, the overall compressive strength and stability are remarkably improved, the three-period minimal curved surface has an ultrahigh specific surface area, cell attachment, proliferation and differentiation are facilitated, and stress concentration is avoided due to the fact that the average curvature is zero.

The utility model discloses an insert type spine self-stabilization type fusion cage, which belongs to the technical field of fusion and comprises a fusion cage body, a bone grafting cavity is arranged on the fusion cage body, a mounting inlet is arranged on one side of the fusion cage body, and two groups of mounting outlets are arranged on one side of the fusion cage body opposite to the mounting inlet. A fixing clamp is mounted on the fusion cage body and penetrates through the mounting inlet and the mounting outlet; a mounting inlet is formed in the fusion cage body, a connecting groove and a threaded groove are formed in the two sides of the fusion cage body respectively, the connecting groove and the threaded groove are formed in the two sides of the mounting inlet respectively, and the fusion cage body is mounted through a holding device.

The present disclosure provides adjustable spinal devices, instruments for deploying spinal devices, methods for adjusting the height and / or lordosis angle of spinal devices, and methods for implanting such devices. The adjustable spinal fusion device includes an upper plate having an outer surface for positioning against a first vertebral body and a lower plate having an outer surface for positioning against a second vertebral body. The device further includes a translation member configured to move longitudinally relative to the upper and lower plates to adjust the angle between the upper and lower plates, and a locking member coupled to the translation member. The locking member is movable between an unlocked position, in which the translation member is permitted to move longitudinally, and a locked position, in which the translation member is restricted from moving longitudinally.

The present technology includes patient-specific spinal fusion devices, which may include an interbody implant that is designed to be positioned within a disc space between two vertebral bodies and one or more fixation elements that can anchor the interbody implant to the vertebral bodies. The fusion devices include one or more retention mechanisms for retaining the fixation elements within corresponding lumens or bore holes extending through the interbody implant. Methods for designing and manufacturing patient-specific spinal fusion devices are also described herein.

An implantable sensor assembly for use during spinal fusion. The implantable sensor assembly can include a component of an implantable prosthesis and an implantable cartridge associated with the component. The implantable cartridge can include at least one sensor capable of detecting one or more kinematic measurements associated with a patient and generating sensor data, and an antenna in electrical communication with at least one sensor, wherein the antenna transmits sensor data to a receiver at a remote location.

A spinal procedure includes attaching a first reduction instrument to a first guide assembly and a second guide assembly. The first reduction instrument includes a fixed attachment assembly and a translating attachment assembly that cooperatively interfaces the fixed attachment assembly. The first guide assembly is attached to a first pedicle and the second guide assembly is attached to a second pedicle. The first reduction instrument is moved to reduce an orientation of the spine, while imaging a reduction of the orientation of the spine. An angle and position of the first reduction instrument is locked upon achieving a desired reduction. The spine may then be fused.

The present application relates to the field of spinal fusion cage, in particular to a kind of anti-displacement integral expansion type intervertebral fusion device, including the support plate installed between spine, the end surface of support plate corresponding spine is provided with deformation shell, deformation shell is contacted with spine, deformation shell and support plate are provided with deformation inner shell between, sealed cavity is formed between deformation inner shell and deformation shell, connecting device is arranged between two deformation shells, connecting device is connected between two deformation shells, clamping device is arranged in connecting device, clamping device can clamp support plate, the present application passes through cavity, so that deformation shell can realize slowly deformation, make it form compatible shape with spine, to reduce stress concentration, to support spine more stably, simultaneously through clamping device, fusion cage can be conveniently placed into spine, it is faster to operate, reduce the pain of patient.

This invention discloses a guidewire-connected negative electrode spinal fusion device system, comprising a fusion device body for mounting between the upper and lower vertebrae, supporting the upper and lower vertebrae and providing bone graft space; a screw-rod fixation mechanism for connecting to and fixing the upper and lower vertebrae on their sides; a positive electrode component for generating positive charge and located outside the bone graft space within the screw-rod fixation mechanism; a guidewire, with its two ends electrically connected to the fusion device body and the positive electrode component respectively; and a guidewire sleeve fitted over the guidewire. The system of this invention places the positive electrode component on the top wire and connects it to the fusion device body via the guidewire. The positive electrode component carries a negative charge on its surface, allowing it to directly contact the upper and lower vertebrae, effectively attracting calcium and phosphate ion deposition, activating osteoblast proliferation and differentiation, accelerating bone ingrowth and fusion, and promoting osteogenic growth. By placing the positive electrode component outside the bone graft space and not contacting the bone graft area, the problem of positive charge inhibiting osteogenic growth near the bone graft area is solved.

The application discloses a spinous process fusion device, which comprises a main body, an opening arm assembly and a movable arm assembly. A moving channel is arranged in the main body and penetrates through the first end of the axial direction of the main body. The opening arm assembly comprises a push rod and two opening arms. The two opening arms are pivotally arranged at the second end of the main body. A sliding part is arranged on the opening arm. The push rod is arranged in the moving channel. The first end of the push rod is provided with a matching part which is in sliding fit with the sliding part. The push rod is movable along the axial direction of the moving channel so as to adjust the included angle between the opening arm and the axial direction of the main body. The movable arm assembly is arranged on the main body and defines a clamping cavity together with the opening arm. The spinous process fusion device has simple structure design, is convenient to install and disassemble, and has high reliability after installation.

This invention belongs to the field of biomedical materials and additive manufacturing technology, and discloses a method for preparing and applying a low-modulus bioactive Ti-Nb alloy porous bone implant. The method includes: three-dimensional design of a porous structure; preparation of a Ti-Nb alloy (80~90:10~20) bicrystalline structure preform using a SLM (Sectional Laser Melting) partitioning scanning strategy; activation via a vacuum / inert atmosphere quenching + sandblasting acid-free etching process; and vacuum plasma spraying of a borosilicate bioglass coating. The product contains a Ti-Nb bicrystalline matrix, a three-dimensional through-porous structure, and a borosilicate coating, with a tensile bond strength ≥30MPa. This invention achieves modulus matching with human bone through compositional control, with no toxic precipitation; partitioning scanning constructs a bicrystalline structure to solve Ti-Nb alloy forming defects; the acid-free etching process preserves the mechanical properties of the matrix; and the coating, along with the bicrystalline and porous structure, synergistically achieves high bonding strength and bidirectional osteogenic effects. Simultaneously, the process is simplified, reducing costs by 20-30%, making it suitable for orthopedic spinal fusion implants.

A method of performing percutaneous interbody spinal fusion on adjacent vertebrae in a patient including the steps of: creating a percutaneous access opening on the patient, using indirect visualization to establish a surgical path through the access opening, creating a cavity in a disc space between the adjacent vertebra, without retraction, inserting an expandable implant into the cavity, the implant configured to fit through the access opening into the cavity, and expanding the implant within the cavity.

The invention relates to the technical field of biological materials, and provides a degradable electrical stimulation spinal fusion cage, the interior of a fusion cage main body comprises a porous structure, the outer surface of the fusion cage main body is covered with a bioactive piezoelectric ceramic coating, piezoelectric ceramic and magnesium alloy can be combined to regulate and control the degradation rate and create textured textures, and the electrical stimulation spinal fusion cage is formed. The surface roughness is improved, the biocompatibility is improved, and integration of piezoelectric electrical stimulation and degradation matching is achieved through the magnesium alloy and the bioactive piezoelectric ceramic coating. The invention further discloses a preparation method of the degradable electrical stimulation spinal fusion cage, a biocompatible magnesium alloy can be used as a base body, and the base body is made of degradable magnesium alloy to meet the mechanical and degradation requirements. A porous structure is precisely formed through selective laser melting so as to adapt to bone ingrowth, and the surface is modified through laser cladding and femtosecond laser in sequence. The porous structure which is difficult to process mechanically can be quickly produced, and the personalized structure of the degradable electrical stimulation spinal fusion cage can be customized.

A spinal fusion clamp implant that connects two vertebra, preferably the C1 and C2 vertebra. The clamp implant includes a clamp assembly that connects to the C1 vertebra. The clamp assembly includes at least one superior jaw and at least one inferior jaw. The superior jaw and the inferior jaw are opposedly arranged and clamp onto posterior arch of the C1 vertebra. The clamp implant also includes an implant assembly that connects to the implant used in C2, and a connection system that connects the clamp assembly with said C2 implant assembly.