36 results about "Spinal cage" patented technology

The invention provides an interbody fusion cage. The interbody fusion cage comprises an upper vertebral plate, a lower vertebral plate and a shell, the driving device comprises a driving rod, and a bevel gear pair is arranged on one side of the driving rod; the transmission bevel gear is meshed with the bevel gear pair; the top of the supporting rod is provided with a first spherical hinge, the first spherical hinge is embedded into the spherical seat of the upper vertebral plate, the outer surface of the supporting rod is provided with a transmission thread, and the bottom of the supporting rod is provided with a second spherical hinge; the sleeve is arranged on the outer surface of the supporting rod in a sleeving mode, and the top of the flexible base abuts against the second spherical hinge. According to the technical scheme, the stress shielding effect in the implanting process of the interbody fusion cage can be effectively achieved, and the technical problem that the interbody fusion cage is attached to the physiological curvature can be effectively solved.

A system and method for spinal fusion that can include: a spinal cage body that includes at least one defined graft window cavity; a plurality of electrodes exposed on the surface of the spinal cage body; control circuitry configured to drive the plurality of electrodes in a stimulation mode; wherein there is at least a targeted osteoinduction region and a targeted non-osteoinduction region that are immediately adjacent to the spinal cage body; and wherein the control circuitry includes configuration to excite the plurality of electrodes during the stimulation mode for generation of a current density in the targeted osteoinduction region and targeted non-osteoinduction region according to targeted levels of bone growth.

The utility model provides an anti-receding expansion type interbody fusion cage, and relates to the technical field of medical equipment. The interbody fusion cage comprises a tube body and a pull rod. The pull rod comprises a rod body and a limiting block, and the rod body is inserted into the pipe body from one side. A limiting groove is formed in the inner side wall of the tube body, a baffle ring is arranged in the limiting groove, a clamping groove is formed in the rod body, and when the interbody fusion cage is opened, the baffle ring is arranged on the rod body in a sleeving mode and clamped into the clamping groove. According to the anti-receding expansion type interbody fusion cage, the invalid size of the cage after the cage is opened can be reduced, work is reliable, and the rebound risk is reduced.

The invention relates to the technical field of medical instruments, in particular to an interbody fusion cage which comprises an interbody fusion cage body, the interbody fusion cage body is of a polyhedral structure and is implanted into the lumbar intervertebral space through an anterior lateral approach, and a screw channel and a connecting screw opening are formed in the front end position and the rear end position in the length direction of the interbody fusion cage body respectively; the screw channel is used for allowing screws to penetrate through the upper surface and the lower surface of the interbody fusion cage body, connected with the vertebral cancellous bone in a matched mode and fixed to the inner side of the lateral portion of the vertebral cancellous bone. The connecting screw is used for being connected with an installation instrument in a matched mode when the interbody fusion cage is implanted. By means of the screw channel, the fixing capacity of the interbody fusion cage can be effectively improved, better stability can be effectively provided for an OLIF operation through a proper implantation position and screw placement internal fixing operation, the occurrence risk of postoperative internal fixing related complications is effectively reduced, and the safety of the interbody fusion cage is improved. The effectiveness and the safety of the fusion cage in the lumbar vertebra front and outer side approach interbody fusion operation are improved.

The invention relates to the technical field of orthopedic implants, in particular to a 3D printed interbody fusion cage. According to the distraction device, the front end distraction module and the rear end distraction module are arranged, the rear end distraction module is rotationally connected with the upper distraction body and the lower distraction body through the multiple rotating pieces correspondingly, the movement stroke of a first rotating shaft rotationally connected with the rotating pieces is limited through a first limiting sliding groove formed in a linkage piece, and therefore the rear end distraction angle is limited; according to the front end opening module, the movement stroke of a sliding piece on a front end moving piece in the axial direction and the height direction is limited through a second limiting sliding groove obliquely formed in a lower opening body, and therefore linkage adjustment of the angle and the height can be achieved at the same time when the front end is opened; when the first pushing rod and the second pushing rod are driven at the same time, the sliding piece and the second limiting sliding groove are matched, the rotating piece and the rotating shaft are matched, the first limiting sliding groove is matched, and the fourth rotating shaft and the third limiting sliding groove are matched to achieve synchronous opening of the front end and the rear end of the opening body.

The invention relates to an interbody fusion cage and a preparation method thereof, and relates to the field of orthopedic implantation, the interbody fusion cage comprises a vertically placed cylindrical fusion cage main body and a pore structure fixedly connected in an inner hole of the fusion cage main body, and the pore structure is in a lattice net shape. The interbody fusion cage provided by the invention has a bone induction function, so that a good bone fusion effect can be achieved without bone grafting or with a small amount of bone grafting.

Disclosed is a spinal cage fixable through insertion of bone screws including a cage body, a receiver disposed on a front surface of the cage body and provided with a plurality of screw holes formed therein so that the bone screws pass through the screw holes to be inserted thereinto, and a fixture coupled to the receiver adjacent to the screw holes and configured to selectively block a portion of each screw hole, wherein, when each bone screw enters a corresponding screw hole, a front end of the fixture is moved in an outward direction of the corresponding screw hole, and when insertion of each bone screw into the corresponding screw hole has been completed, the front end of the fixture is moved in an inward direction of the corresponding screw hole to prevent each bone screw from being separated from the corresponding screw hole.

The invention provides a lumbar vertebra oblique lateral self-locking integrated fusion internal fixation system which comprises an interbody fusion cage, the interbody fusion cage is of a torpedo-shaped streamline structure on the whole and is of an arc-shaped appearance with the middle protruding and the two sides low, the front portion of the interbody fusion cage is high, the rear portion of the interbody fusion cage is low, the side section of the interbody fusion cage is wedge-shaped, and the interbody fusion cage is matched with an intervertebral space structure. A pair of diagonal trusses is fixedly connected in the hollow cavity; the micro side plate is arranged on one side of the interbody fusion cage, the micro side plate and the interbody fusion cage are of a 3D printing integrated structure, a threaded hole and clamping grooves in the two sides are formed in the middle of the micro side plate, and four inclined threaded holes are formed in the four corners of the micro side plate respectively; the number of the fixing screws is four, the fixing screws are connected into the inclined threaded holes through threads respectively, and the four fixing screws are in a multi-axial-direction crossed angulation form. According to the low-incisura, integrated and self-locking novel oblique lateral fusion internal fixation system, internal fixation related complications can be reduced, the operation process in an operation is simplified, the screw placement safety is ensured, and the use experience of the fusion system is improved.

The utility model discloses a cervical vertebra anterior approach interbody 3D printing porous metal integrated fusion device which comprises a fixator and a cervical vertebra interbody fusion cage, the inner side of the fixator is attached to an axis body and connected with the cervical vertebra body through a fixing insertion piece, and the cervical vertebra interbody fusion cage is connected with the inner side of the fixator. In the anterior cervical intervertebral disc resection fusion internal fixation, integration of bone fusion and internal fixation is achieved, so that the success rate of vertebral fusion is increased, the surgical bleeding amount and damage to muscular tissue are reduced, the surgical time is shortened, and a cervical vertebra complex can be safely and effectively fixed and fused.

The utility model discloses the spinal interbody fusion cage of adjustable elastic modulus relates to the orthopedics equipment field, including roof and bottom plate, the roof corresponds with bottom plate, the bottom plate upside fixedly connected with installation component, the roof is installed with a plurality of high elastic modulus pad and low elastic modulus pad through installation component between bottom plate, the installation component includes the locating plate of vertical fixed connection in the bottom plate upside, is established in a plurality of vertical locating slot on the locating plate. Advantageous effects lie in: through the quantity of adjusting high elastic modulus pad and low elastic modulus pad can adjust the elastic modulus of this fusion ware, increase the quantity of high elastic modulus pad, reduce the quantity of low elastic modulus pad, can increase the elastic modulus of this fusion ware, if reduce the quantity of high elastic modulus pad, increase the quantity of low elastic modulus pad, can reduce the elastic modulus of this fusion ware, make this fusion ware can satisfy different patient demand.

The application discloses a degradable spinal fusion cage with a bone inductive microporous structure and belongs to the technical field of orthopedic implant medical devices. The fusion cage is integrally made of a degradable polymer composite material, the inside of the main body is provided with a bionic gradient microporous structure which is interconnected, and the surface of the fusion cage is provided with an active coating layer with a slow-release function. The mechanical property of the product is adapted to the physiological bearing requirement of the spine, the product can be steadily degraded along with the bone tissue regeneration process after being implanted into the human body, can effectively guide the bone tissue and microvessels to grow in, and can improve the intervertebral fusion efficiency; meanwhile, the problems of stress shielding, postoperative infection and the need for secondary removal surgery existing in traditional metal implants are solved, the product has good biocompatibility, the structure is reasonable, the preparation process is simple, and the product is suitable for clinical intervertebral fusion surgery of the spine.

The objective of the present invention is to provide an interbody fusion cage device which: has bone fusion protrusions and bone fusion holes on an upper plate and a lower plate of a cage that is to be inserted between vertebrae, and has a grid-shaped elasticity providing body, formed over both side plates and a rear plate, for adjusting an elastic modulus of the cage to an elastic modulus of a bone such that bone fusion between the vertebrae and the cage is facilitated and subsidence in which the cage penetrates the vertebrae can be prevented; has diagonal screw insertion holes, formed on a front plate of the cage, to be structured such that the insertion direction of fixing screws can be vertically and horizontally adjusted and thus a margin for the direction in which the fixing screw is inserted into the vertebrae from the outside of the cage can be provided, thereby enabling convenience and accuracy of surgery for an operator to be improved; and has a screw fastening hole formed on the front plate of the cage such that a separation prevention screw for preventing the separation of the fixing screw can fastened thereto, and thus the loosening or separation of the fixing screw insertively fastened to the vertebrae from the cage can be prevented.

The utility model discloses a kind of guiding formula arc intervertebral fusion cage sets, it includes: shaft sleeve, intervertebral fusion cage and guide needle, the shaft sleeve includes: first blocking part and second blocking part, the intervertebral fusion cage is housed in the shaft sleeve, the intervertebral fusion cage is configured to rotate radially from the shaft sleeve, the guide needle is configured to pass through the intervertebral fusion cage to guide the intervertebral fusion cage to target position, when carrying out spinal interbody fusion cage fusion, intervertebral fusion cage can be guided to the vertebral body opening of target, is implanted with the rotation to comply with the arc of vertebral body, to avoid injury surrounding nerve root or soft tissue, and reduce the opening area required for operation, reach the requirement of wound range minimization.

The invention provides a D-shaped hollow cylindrical thoracolumbar vertebra side wall interbody fusion cage for a rachitis operation, which belongs to the technical field of medical instruments for spine surgery, is an integrally formed rigid structure without movable parts, is a D-shaped hollow cylindrical body on the whole, and comprises a fusion cage cylindrical body with a fixed height, the cross section of a main body is D-shaped, and the cross section of the main body is L-shaped; the upper end face and the lower end face of an arc-shaped side wall and a plane side wall are enclosed by the upper end face and the lower end face; the cylindrical hollow cavity penetrates through the fusion cage cylindrical body in the axial direction, and the micron-sized rough textures are arranged on the outer surfaces of the arc-shaped side wall and the plane side wall. Anatomical matching with the lateral bone surface of the vertebral body is achieved through the D-shaped section, and load transmission and stress distribution are fundamentally improved in combination with large-area contact between the planar side wall and the end plate. Unprecedented initial stability is provided for the fusion cage in infectious loose bone, and the risks of displacement, sedimentation and disengagement are remarkably reduced.

The invention discloses a slidable and self-locking type atlantoaxial interbody fusion cage, and belongs to the technical field of atlantoaxial interbody fusion cages, the slidable and self-locking type atlantoaxial interbody fusion cage is provided with a fusion cage upper slip sheet convenient to support, a fusion cage lower slip sheet is attached to the lower surface of the fusion cage upper slip sheet, and angle plates are mounted on the outer sides of the fusion cage upper slip sheet and the fusion cage lower slip sheet; comprising a sliding strip which slides in a sliding groove formed in a sliding piece on the fusion cage. According to the slidable and self-locking type atlantoaxial interbody fusion cage, the fusion cage upper sliding piece and the fusion cage lower sliding piece are arranged, the sliding stability between the fusion cage upper sliding piece and the fusion cage lower sliding piece is improved through the use of a sliding strip, a first moving block and a second moving block, and a first clamping piece and a second clamping piece are matched for use, so that the adjusted and assembled fusion cage body is adjusted and locked; and surgical assembly locking is achieved, the stability of adjusting and locking of the fusion cage is improved, falling and adjusting dislocation are prevented, and replacement and assembly can be conveniently conducted according to the requirements of a patient through a replacement plate.

An interbody spinal cage when implanted can be manipulated non-invasively to change dimensions conforming to contours of adjacent vertebral bones. The interbody spinal cage includes a flexible shell that encases multiple variable-length rods. Each of the multiple variable-length rods include telescoping tubes and an actuator for increasing and decreasing the length of the telescoping tubes. Each of the variable-length rods includes a retention member to limit movements of the telescoping tubes, wherein the retention member can be engaged and disengaged. Both the retention member and the actuator can be operated from outside the body in which the interbody spinal cage is implanted.

Provided is a height-adjustable interbody fusion cage for an oblique lateral approach, comprising a body having a frame structure. A first upper blade is movably disposed on one end surface of the body, and a second lower blade is movably disposed on the end surface of the body opposite to the first upper blade. Opposite side surfaces of the body are provided with positioning holes. The two positioning holes are located on the same straight line in the horizontal direction, and the center lines of the two positioning holes are also on the same straight line. The end surface of the body adjacent to the positioning holes is a threaded end surface, and the threaded end surface is provided with a threaded hole. The surfaces of the first upper blade and the second lower blade are both arranged obliquely to the horizontal line, and the surfaces of the first upper blade and the second lower blade are both disposed at an acute angle to the horizontal line. The fusion cage has a height adjustment function, and can be accurately adjusted after implantation, thereby providing greater surgical operation flexibility and ensuring an optimal implantation position and fusion effect.

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.

One or more techniques and / or systems are disclosed for an expandable spinal cage device used in a spinal fusion procedure. The device can comprise three major pieces that are combined to expand the device both laterally and vertically in the intervertebral gap. A first piece is a cage support body, and a second piece is a width expander body inserted into the first piece that laterally expands the first piece. A third piece is a vertical expander body inserted into the first or second piece that results in vertical expansion of first piece. In this way, the first piece can be expanded laterally up to two times, and vertically up to two times.

One or more techniques and / or systems are disclosed for an expandable spinal cage device used in a spinal fusion procedure. The device can comprise three major pieces that are combined to expand the device both laterally and vertically in the intervertebral gap. A first piece is a cage support body, and a second piece is a width expander body inserted into the first piece that laterally expands the first piece. A third piece is a vertical expander body inserted into the first or second piece that results in vertical expansion of first piece. In this way, the first piece can be expanded laterally up to two times, and vertically up to two times.

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 present disclosure relates to an antibacterial copper-containing titanium alloy three-dimensional adjustable minimally invasive intervertebral fusion cage, which comprises: N edges connected end to end, adjacent edges are pivotally connected, forming a closed N-sided polygon, wherein N is an integer greater than three; an adjusting rod is adjustably arranged between a first corner and a second corner of the N-sided polygon, and forms a triangular structure with two edges between the first corner and the second corner of the N-sided polygon; the three edges of the triangular structure are pivotally connected to each other; when the adjusting rod is retracted, the other two edges of the triangular structure are close to each other to distract the fusion cage until it enters a locked position; wherein a locking mechanism is arranged on the adjusting rod, and the locking mechanism at least locks the locking position of the adjusting rod. The present disclosure can maintain a suitable shape during implantation, be implanted through a wound, and be easily operated to achieve good fixation effect at a predetermined position.

The utility model discloses a strutting intervertebral fusion cage which comprises two sets of supporting seats, the two sets of supporting seats are movably installed through a plane detachable hinge, a protection pipe is installed at the center of the plane detachable hinge in a penetrating mode, a threaded pipe is rotatably installed at the outer end of the protection pipe, and a threaded rod is installed at the outer end of the threaded pipe. And a rotating rod is fixedly mounted at one end of the threaded pipe. The internal hexagonal wrench extends into the protection pipe to rotate the hexagonal column to control the threaded pipe to rotate, so that the internal threaded pipe is pushed to move, the two sets of supporting rods are controlled to support outwards, supporting between the supporting rods and a cone is completed, meanwhile, after the using angles of the two sets of supporting bases are fixed, the internal hexagonal wrench is pulled out from the interior of the protection pipe, and the supporting rods are pulled out. The supporting force reduction caused by direct control over the threaded pipe is avoided, the use position of the positioning plate is positioned through the arranged connecting bolts, and the control and adjustment over the centrum lateral protrusion are completed by locking the two sets of side stress plates installed at the two ends of the positioning plate through the adjusting bolts.

The minimally invasive spine interbody fusion cage comprises a shell, a telescopic part and an adjusting part, the adjusting part is arranged in the shell, and the shell is connected with the adjusting part in a matched mode through the telescopic part; during use, the adjusting part is rotated to drive the telescopic part to stretch out and draw back, so that the shell is expanded or contracted. The shell is connected with the adjusting part in a matched mode through the telescopic part, so that the shell is driven by the telescopic part to be expanded or contracted under rotation of the adjusting part, the operation space in the spine minimally invasive surgery can be enlarged, and a user can treat the focus more easily. The device is easy to operate, simple in structure, small in trauma and suitable for clinical application in the orthopedics department.

This invention relates to the field of medical device technology and discloses an intervertebral fusion device and a fusion device system. The intervertebral fusion device includes a fusion device body and a locking assembly. An insert and a driving member are movably disposed within the fusion device body. The driving member has a cam portion. When the driving member is rotated, the cam portion can push out the insert and insert it into an adjacent vertebral body. The fusion device body can further enhance the connection with the vertebral body through the insert. After the insert is pushed out, the position of the driving member can be moved until its cam portion engages with a locking groove in the fusion device body, preventing the insert from retracting into the fusion device body after the driving member rotates back. This invention also provides a fusion device system, including an operating tool and an intervertebral fusion device. The operating tool can operate the driving member to push the insert out of the fusion device body and can also operate the driving member to move until the cam portion engages with the locking groove. This fusion device system adds an anti-retraction function, which can both restore the intervertebral height and improve the stability in the initial stage of fusion.

An interbody fusion cage based on mechanical metamaterials comprises an implant, the implant comprises a supporting body, one end of the supporting body is an inserting end, the other end of the supporting body is a connecting end, the side face of the supporting body comprises two oppositely-arranged rotating faces and a plurality of oppositely-arranged bone ingrowth faces, and clamping grooves are formed in the side corners, connected with the connecting end, of the end faces of the rotating faces. A through hole is formed in the middle of the rotating surface, a conformal design technology is adopted for the appearance of the implant, and a customized treatment scheme is provided; porous structures are arranged in the rotating face and the bone ingrowth face, the implant is made of mechanical metamaterials, the mechanical performance of the fusion cage can be accurately adjusted through the design of the metamaterials, the fusion cage better adapts to the characteristics of the lumbar vertebra of the human body, and postoperative complications are reduced.

The expandable interbody fusion cage comprises an acetabular cup and a titanium cage, the interior of the acetabular cup is hollow, and the titanium cage is installed in the acetabular cup; the acetabular cup comprises a left shell and a right shell which are symmetrically arranged, the left shell and the right shell are respectively provided with a plurality of vertical columns which are vertically arranged, the front ends of the left shell and the right shell are respectively provided with an I-shaped frame, a certain gap is formed between the middle portions and the rear ends of the left shell and the right shell, and clamping sawteeth are arranged on the upper faces and the lower faces of the middle portions of the left shell and the right shell respectively. A flexible supporting column and a bridging column are installed in a gap between the left shell and the right shell, and the acetabular cup expands in the left-right direction through the I-shaped frame, the flexible supporting column and the bridging column. The front end of the titanium cage is conical, a limiting groove matched with the I-shaped frame is formed in the conical front end, a bone grafting cavity is formed in the middle of the titanium cage, the upper side and the lower side of the bone grafting cavity are open, and a plurality of hollow holes are formed in the cage wall of the titanium cage. The interbody fusion cage is reasonable in structure, stability and anti-settling performance can be improved, and therefore certain help and guidance are provided for clinic.

The utility model discloses a single-column type drop hammer impact testing machine, and particularly relates to the technical field of drop hammer impact testing machines, which comprises a stand column, a base arranged at the bottom end of the stand column, a winch arranged at the top end of the stand column, two vertical rails arranged on one side of the stand column, a sliding block connected with the two vertical rails in a sliding mode, and a falling arm arranged on the sliding block. A hammerhead is installed at the bottom of one end of the falling arm, the top of the other end of the falling arm is connected with a rope of a winch, a lifting adjusting assembly is installed at the bottom end of the other side of the stand column, and two brake assemblies are installed on the lifting adjusting assembly. Falling of the sliding block is buffered and positioned through the brake assembly, repeated rebound of the sliding block is avoided, and the detection precision is improved; the height of the brake assembly can be adjusted through the lifting adjusting assembly, and the detection requirements of interbody fusion cages or ceramic joint prostheses of different heights are met. The impact detection device has the advantages that the impact detection precision of medical accessories such as interbody fusion cages and ceramic joint prostheses is improved, and the quality of medical products is guaranteed.

The invention relates to the technical field of biomedical materials, in particular to a preparation method of a medical high-strength and high-antibacterial bearing bone implant, which comprises the following steps: mixing 1-5wt% of silver powder and 95-99wt% of nickel-titanium alloy powder through a laser powder bed fusion technology, and carrying out 3D printing forming in a low-oxygen environment. And by optimizing key process parameters such as laser power and scanning speed, uniform distribution of the silver element and dispersion strengthening of the second phase are achieved, and the comprehensive performance of the material is remarkably improved. The obtained implant has high density, high strength and high antibacterial property, the compressive strength of the implant can reach 3400-3800 MPa, the elastic modulus of the implant is close to that of a human bone, the antibacterial rate of the implant to staphylococcus aureus and escherichia coli exceeds 95%, meanwhile, the inherent superelasticity and shape memory effect of nickel-titanium alloy are kept, and the implant can be applied to the field of medical treatment. The device is particularly suitable for orthopedic implantation of high-load parts such as interbody fusion cages and artificial joints.