91 results about "Intervertebral spaces" patented technology

The invention relates to the technical field of medical equipment, in particular to an angle-adaptive anterior cervical dilator. An auxiliary plier body is connected with a main plier body. The plurality of supporting rods are mounted at respective working ends; the self-adaptive opening assembly is used for automatically adjusting and fixing according to the intervertebral space of a patient, and comprises a sliding adjusting part which is fixed on the main forceps body and is used for opening the main forceps body and the auxiliary forceps body in a semicircular rotating direction; the hydraulic triggering part is installed in the main clamp body and acts on the sliding adjusting part so that the main clamp body and the auxiliary clamp body can be locked after the cervical vertebra of the patient is opened. The clamping blocks are driven through the hydraulic action to lock the piston block located in the inner cavity of the clamp body, and then the main clamp body and the auxiliary clamp body fix the intervertebral space at the current opening distance; the clamping distance adjusting assembly is designed, the auxiliary supporting rod and the ratchet bar are combined with the locking block with the rack structure to fix the auxiliary supporting rod, and the fixing device has the advantages of being good in fixing effect, high in flexibility and convenient to use.

An intervertebral implant may include a shaft having a proximal end, a distal end, a longitudinal axis, a minor diameter, and a helical thread disposed about the shaft along the longitudinal axis between the proximal end and the distal end of the shaft. The helical thread may include a major diameter and a concave undercut surface angled towards one of the proximal end and the distal end of the shaft. The intervertebral implant may be implanted within an intervertebral space between a superior vertebral body and an inferior vertebral body. A ratio of the major diameter to the minor diameter may be less than 1.50. The concave undercut surface may engage the superior vertebral body and the inferior vertebral body and may be shaped to resist at least one force transmitted between the superior vertebral body and the inferior vertebral body to stabilize the intervertebral space.

The invention relates to a percutaneous implantation elastic modulus intervertebral dilator and an operation kit, and belongs to the technical field of spine surgery implants. In order to solve the problems that an existing intervertebral dilator causes a large wound to a patient and the distraction angle cannot be adjusted, the intervertebral dilator is provided with a dilator body, an angle auxiliary adjusting mechanism, an auxiliary suite and an angle feedback mechanism, the dilator body is used for being placed in the intervertebral space of the patient, and the angle auxiliary adjusting mechanism is arranged in the dilator body; the auxiliary suite comprises a first installation tool and a second installation tool, the first installation tool is arranged at the rear end of the spreader body and connected with the angle auxiliary adjusting mechanism, after the spreader body is placed, the first installation tool is taken down, and the spreader body is locked and fixed through the second installation tool; the angle feedback mechanism is arranged on the spreader body and extends to be connected with the first mounting tool, and an operator observes the spreading angle through the angle feedback mechanism. The operation steps are greatly reduced, and the operation efficiency and the intervertebral fusion effect can be improved.

The invention provides an intervertebral prosthesis and an intervertebral prosthesis component, and the intervertebral prosthesis comprises an upper end plate; the lower end plate and the upper end plate are arranged at intervals; the adjusting shaft assembly is arranged between the upper end plate and the lower end plate, and the adjusting shaft assembly comprises an outer shaft and an inner shaft telescopically arranged in the outer shaft; the first adjusting piece is arranged on the inner shaft; the first transmission structure is connected between the first adjusting piece and the first end of the upper end plate and between the first adjusting piece and the first end of the lower end plate; the second adjusting piece is movably arranged on the outer shaft; and the second transmission structure is connected between the second adjusting piece and the second end of the upper end plate and between the second adjusting piece and the second end of the lower end plate. According to the technical scheme, the problems that in the prior art, an intervertebral prosthesis is difficult to be matched with the natural angle of the intervertebral space, and the use stability of the intervertebral prosthesis is reduced are effectively solved.

Interbody spacers are expandable horizontally and vertically by an application of axial force, and lockable in an expanded configuration. The spacers include support members interconnected to end bodies by pivotable link members. The spacers are introduced between vertebral bodies in a compressed configuration and expanded to fill the intervertebral space and provide support and selective lordotic correction. Graft material may be introduced into the expanded spacer. Provisional and / or supplementary locking means lock the spacers in the expanded configuration. Embodiments of the spacers include symmetrically and asymmetrically configured spacers. Methods of expansion include symmetric expansion or asymmetric expansion along each of two directions.

The invention relates to the technical field of medical instruments, and discloses an intelligent intervertebral dilator which comprises a transverse center shaft, a plurality of longitudinal shafts perpendicular to the center shaft are clamped on the center shaft side by side, distraction units are slidably connected to the positions, located on the two sides of the center shaft, of the longitudinal shafts respectively, each distraction unit comprises a sliding block, a distraction handle is connected to the lower portion of each sliding block, and the distraction handles are used for being inserted between adjacent vertebral bodies. A driving mechanism is arranged between the sliding block and the longitudinal shaft; the distraction unit located in the middle of the middle shaft is defined as a main distraction device, the other distraction units are defined as auxiliary distraction devices, a pressure sensor and a position sensor are arranged on the main distraction device, and a pressure sensor is arranged on each auxiliary distraction device; the device further comprises a control unit, and the pressure sensor, the position sensor and the driving mechanism are in communication connection with the control unit. The multiple distraction units are arranged to distraction intervertebral spaces synchronously, fracture caused by stress concentration during vertebral body distraction is avoided, pressure borne by the distraction units and the distraction height of the middle of the vertebral body can be monitored in real time, subjective judgment is avoided, and the distraction device is particularly suitable for osteoporosis patients.

The present invention relates to an intervertebral fusion device. The intervertebral fusion device comprises at least one endplate configured to be received in an intervertebral space defined between first and second vertebrae and a core component configured to engage with the at least one endplate when the at least one endplate is in the intervertebral space and the core component is inserted into the intervertebral space. The intervertebral fusion device also comprises first and second fingers and first and second recesses. A proximal end of each of the first and second fingers is attached to the endplate at or adjacent an anterior end of the endplate that first receives the core component when the core component is inserted into the intervertebral space. Each of the first and second fingers extends in the direction of insertion of the core component towards a posterior end of the endplate and is unattached along its length except at its proximal end whereby the finger flexes along its length. The first and second fingers are spaced apart from each other in a transverse direction which is orthogonal to a direction of insertion of the core component and to a direction of separation of the first and second vertebrae. The first finger defines a first protrusion at a distal end thereof and the second finger defines a second protrusion at a distal end thereof, each protrusion protruding from the respective finger in the transverse direction. The core component defines the first and second recesses near a posterior end of the core component, the first and second recesses spaced apart from each other in the transverse direction. The core component bears against the first and second protrusions during a first stage of insertion to flex the first and second fingers in the transverse direction, and during a second stage of insertion after the first stage of insertion the first and second protrusions are received in the first and second recesses respectively and under spring bias exerted by the first and second fingers to thereby retain the core component relative to the endplate.

A method of implanting an intervertebral spacer may include positioning the intervertebral spacer within an intervertebral space defined by adjacent vertebral bodies. The intervertebral spacer may include a plurality of bores, and each of the plurality of bores may be configured to receive either a linear fastening element or a curvilinear fastening element. The method also may include selecting a first fastening element from a group including linear fastening elements and curvilinear fastening elements, and inserting the first fastening element into a first bore of the plurality of bores such that the first fastening element is inserted into one of the adjacent vertebral bodies to secure the intervertebral spacer within the intervertebral space.

The invention relates to the technical field of testing, in particular to a dummy lumbar vertebra gap adjusting device which comprises a concave plate, the upper edge and the lower edge of the front surface of the concave plate are jointly and fixedly connected with a soft plate, a distance adjusting mechanism is arranged behind the soft plate, and one side edge of the concave plate is fixedly connected with a side block. Two rotating plates are rotatably connected to the surface of one side of the side block through a locking mechanism, a sliding plate is connected to the front end of each rotating plate through a telescopic mechanism, and an L-shaped strip is rotatably connected to the side, close to the concave plate, of each sliding plate through a reset mechanism. And meanwhile, the bending degree of the waist of the dummy is adjusted, so that a standardized impact test can be assisted.

The present invention relates to an intervertebral implant and the device and system comprising the same. The intervertebral implant comprises: a core part having at least one hole on its surface, with at least one working hole; an outer shell, at least partially covering the core part, including a top and a bottom, with the bottom having an opening; and a mesh configured between the outer shell and the core part, surrounding the exterior of the core part; wherein the working hole corresponds to the opening. The advantage of the present invention is that: the mesh structure can expand in intervertebral space when infused with fusion materials and conform to the vertebral bodies, thereby enhancing the contact area to endplates and improving the success rate of fusion. At the same time, the mesh structure can be protected from damage during insertion. In addition, the intervertebral implant of the present invention can be inserted between the vertebral bodies more easily and can provide more effective support, thereby improving the stability of implant and the likelihood of successful fusion.

The present invention relates to an intervertebral fusion device, which includes a shaft body, a first distraction member and a fusion body. The first distraction member is mounted on the shaft body and can move axially along the shaft body. The first distraction member has an inner end and an outer end distributed radially along the shaft body, and the inner end is connected to the shaft body. The fusion body is circumferentially arranged around the shaft body and connected to the outer end of the first distraction member. A first slide is provided on the inner wall of the fusion body. An angle is provided between the extension direction of the first slide and the outer wall of the fusion body. The outer end of the first distraction member is movably arranged in the first slide. In the above-mentioned intervertebral fusion device, the first distraction member can change the distance between the fusion body and the shaft body by sliding along the first slide, thereby changing the size of the distraction of the intervertebral fusion device. When the intervertebral fusion device is implanted, the distraction range of the intervertebral fusion device can be adjusted according to the specific conditions of the intervertebral space, and the contact surface with the vertebral space can be increased to better match the intervertebral space, maintain the height of the intervertebral space, and restore the physiological curvature of the lumbar spine.

The invention discloses a device for scraping tissues in an intervertebral space under an endoscope, and belongs to the technical field of spine endoscopes, the device comprises a scraping structure, and the scraping structure is arranged on the side surface of the lower end of a working sleeve and is used for scraping cartilage end plates and nucleus pulposus tissues in the intervertebral space. By arranging the scraping structure on the working sleeve, tissues in the intervertebral space are scraped, the efficiency is high, and the consumed time is short.

This invention relates to the field of intelligent spinal detection technology, and more particularly to an intelligent recognition system for spinal images. The invention acquires the spinal contour through an image acquisition module, divides the contour into several sub-regions through a scanning module, and acquires the grayscale values ​​of several pixels within each sub-region. A grayscale calibration unit determines the calibrated grayscale values ​​for filling each pixel within the sub-regions. A filling unit determines the intervertebral space filling characterization and identifies the dominant sub-regions of intervertebral space features. A recognition module identifies the end-vertebral tangent within the dominant sub-regions of intervertebral space features. An evaluation output module outputs the Cobb angle of the scoliosis assessment result. Furthermore, this invention achieves precise analysis of pixel grayscale values ​​within the spinal contour sub-regions and explicit processing of intervertebral space features, establishing an effective mechanism for locating end-vertebral tangents based on pixel grayscale differences, thereby improving the accuracy and efficiency of Cobb angle calculation in scoliosis assessment.

The horizontal type cervical traction bed comprises a bed body, the head position of the bed body is provided with a head movable bed plate capable of sliding along an arc-shaped track, and the head movable bed plate is connected with the bed body through an arc-shaped sliding rail mechanism arranged below the head movable bed plate; the arc-shaped sliding rail mechanism can be movably adjusted according to the use requirements of a patient; a neck fixing mechanism is arranged above the head moving bed board and used for fixing the head of a patient. According to the horizontal type cervical vertebra traction bed adapting to the physiological curvature of the cervical vertebra, through the unique arc-shaped traction groove design, the natural physiological curvature of the cervical vertebra of the human body can be perfectly matched; in the traction process, traction force can be evenly distributed according to the bending shape of the cervical vertebra and accurately acts on each vertebral body, intervertebral space is effectively expanded, compression of the intervertebral disc on nerve roots and spinal cords is remarkably relieved, and compared with traditional traction equipment, the precision and effectiveness of traction treatment are greatly improved, and a more remarkable symptom relieving effect is brought to a patient.

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 insertion instrument 10 for inserting a modular intervertebral fusion device or components thereof into an intervertebral space comprises at least one superior arm 16, 18 mounted on a superior support 12 such that the at least one superior arm extends from the superior support. The insertion instrument further comprises at least one inferior arm 20, 22 mounted on an inferior support 14 such that the at least one inferior arm extends from the inferior support. The superior and inferior supports 12, 14 are mechanically coupled to each other whereby: the at least one superior arm 16, 18 and the at least one inferior arm 20, 22 extend in generally a same direction such that, in use, each of the distal ends of the superior and inferior arms engage at a respective location on a modular intervertebral fusion device or component thereof; and the superior and inferior supports 12, 14 rotate relative to each other to provide relative rotation of: the at least one superior arm; and the at least one inferior arm, whereby there is movement together and apart of the at least one superior arm and the at least one inferior arm at their distal ends. One of: the at least one superior arm 16, 18; and the at least one inferior arm 20, 22 is unarticulated between its distal end and the respective superior or inferior support 12, 14. The other one of: the at least one superior arm 16, 18; and the at least one inferior arm 20, 22 comprises a hinge 32 between its distal end and the respective superior or inferior support. The hinge 32 rotates the distal end of the other one of the superior arm and the inferior arm towards or away from the one of the superior arm and the inferior arm.

An expansion member for distributing graft material through a cage and into an intervertebral space is provided. The expansion member has a central beam with an entry port in fluid communication with an exit port for distribution of the graft material. The central beam is inserted into a cage having a reversible collapse from an expanded state into a collapsed state, the expanded state forming a graft distribution window. The expanded state, for example, can be configured to open the graft distribution window which at least substantially closes upon the reversible collapse.

The invention discloses a capsular bag fusion cage which comprises a porous capsular bag main body, an implantation sheathing canal for auxiliary installation, and a connecting tube and an injection tube which are used for injecting filler, the porous capsular bag body is compressed and folded into a slender cylinder in a natural state, the porous capsular bag body comprises a telescopic woven sleeve, the porous capsular bag body is integrally woven and formed through arrangement of the porous capsular bag body, the porous capsular bag body can be folded, minimally invasive use is facilitated, the porous capsular bag body is in the slender cylinder shape before implantation, and the implantation sheathing canal assists in being implanted into the intervertebral space; then a connecting channel is constructed through a connecting pipe, and then filler is discharged into the porous bag main body through an injection pipe, so that the porous bag main body is expanded according to a certain preset form, the goodness of fit between the porous bag main body and the intervertebral space is improved, meanwhile, operative wounds are greatly reduced, the hospitalization time is shortened, and rehabilitation of a patient is accelerated; and the use efficiency of the capsular bag fusion cage is improved.

The utility model belongs to but not limited to the technical field of medical instruments, and discloses an endoscopic intervertebral space planer tool device which comprises a connecting part, a working part is arranged at one end of the connecting part, and a universal connecting interface is arranged at the other end of the connecting part and is in butt joint with a power system; the inner diameter of the working part is larger than that of the connecting part, the working part expands at the far end, the diameter of the working part cutter head is larger than that of the connecting part outer sleeve rod, and a working part shell and the cutter head are both provided with openings. A communicated hollow pipeline is arranged between the inner core rod of the connecting part and the tool bit of the working part and communicated with the connector, and after the power system is connected with the connector, the inner core rod and the tool bit axially move and rotate in the outer sleeve rod and the shell. And the suction function is realized through the working part shell opening, the tool bit opening and a hollow pipeline between the connecting part inner core rod and the working part tool bit. When being used for treating the intervertebral space, the device can be inserted into the intervertebral space under the microscope to finish one-time treatment, so that the operation efficiency is improved, and the operation difficulty is reduced.

The invention belongs to the technical field of medical instruments, and particularly relates to a lumbar puncture auxiliary positioning device which comprises a backrest plate, the lower end of the backrest plate is rotationally connected with a hip supporting plate, a pillow plate is fixedly mounted at the upper end of the backrest plate, an open groove is formed in the backrest plate, and a sliding groove is formed in the inner wall of one side of the open groove; a through groove is formed in the inner wall of the other side of the backrest plate in a penetrating mode, a first sliding plate is arranged in the sliding groove in a sliding mode, a second sliding plate is arranged in the through groove in a sliding mode, and the end of the second sliding plate is fixedly connected with a circular ring located on the outer side of the backrest plate. The hip joints, knee joints, the head and the neck of a patient are bent through the arrangement of the backrest plate and the hip supporting plate, then puncture points are conveniently found, adjustment of the puncture angle and depth is achieved through rotation of the rotating block and the threaded pipe, then a needle head can penetrate through the intervertebral space and enter the epidural space or the subarachnoid space, and a cerebrospinal fluid sample is rapidly obtained.

The invention provides a visual end plate scraper with supporting and fixing functions, and belongs to the technical field of medical instruments. Comprising a cutter body, one end of the cutter body is fixedly connected with a cleaning assembly, and the cleaning assembly is used for treating an intervertebral cartilage end plate and connected with the cutter body; and the supporting assembly is used for assisting in supporting and fixing of the intervertebral space, and the supporting assembly is connected with the knife body. By arranging the supporting assembly and the cleaning assembly, the supporting assembly not only can achieve opening and fixing in a narrow space of the intervertebral space, but also can conduct supporting and fixing according to the elastic deformation of the supporting assembly, and therefore the scraper can treat the intervertebral space cartilage end plate more conveniently; the cleaning assembly not only can clean the intervertebral space cartilage end plate, but also can be matched with the supporting assembly to achieve multi-degree-of-freedom direction change of the scraper, and in addition, the cleaning assembly is matched with a high-definition camera to achieve visualization of a narrow space at the focus intervertebral space.

This invention relates to the field of interbody fusion device technology, specifically a 3D-printed porous interbody fusion device, comprising a fusion device body, a first filling hole penetrating through the middle of the fusion device body, and a plurality of internal reinforcing ribs evenly distributed circumferentially on the inner wall of the first filling hole. Based on the biomimetic mechanical design concept of the biomedical engineering industry, this interbody fusion device can break through the limitations of traditional fixed-width fusion devices, and can accurately match the anatomical width of the intervertebral space of different patients without the need for manual cutting and modification during surgery. It can fully adapt to the individualized needs of various heights, weights and disease segments, and fundamentally avoid the risks of endplate damage, infection and anchoring structure damage caused by cutting. After implantation, the self-locking component can achieve immediate rigid locking, completely blocking the reverse rebound path of the adjustment block. Combined with the multi-occlusal tooth structure, it forms a stable mechanical anchor, eliminating postoperative micromovement, displacement and slippage problems, and greatly improving the overall stability of the fusion device in the early stage of implantation.

The utility model discloses an interbody fusion cage capable of being opened, and relates to the technical field of medical instruments, in particular to the interbody fusion cage capable of being opened. The anti-sinking device comprises an outer shell, an arc-shaped convex plate, an adjusting plate, a screw rod, a lifting component and an anti-sinking component, the adjusting plate is arranged in the outer shell, and a front-back through hole for the screw rod to penetrate through is formed in the adjusting plate; the arc-shaped convex plate is arranged at the front part of the outer shell, and a screw hole is formed in the center of the arc-shaped convex plate and is screwed with a screw rod penetrating through the through hole from the rear part of the adjusting plate; two lifting components are symmetrically assembled at the upper end and the lower end of the outer shell. An anti-sinking part is assembled outside the lifting part; according to the technical scheme, the problems that in the prior art, a fusion cage is too thick to be installed in an intervertebral gap easily, and the fusion cage is too thin to facilitate an operation but not good in contact with a vertebral body are solved; the problems that the thickness of the fusion cage is changed and the treatment effect of a patient is reduced due to the fact that a screw slip condition cannot be locked when adjustment is carried out through a screw rod are solved.

The invention discloses a body position auxiliary device for lumbar puncture, and belongs to the technical field of lumbar puncture, the body position auxiliary device comprises a main body module and an arc plate module, the main body module comprises a rotating cylinder, the outer surface of the rotating cylinder is rotatably sleeved with a central rotating sleeve, and the outer surface of the central rotating sleeve is fixedly connected with a binding assembly; the arc plate module comprises a plurality of steering assemblies, through arrangement of an external rotating sleeve, the steering assemblies, locking assemblies, linkage assemblies and first locking grooves, accurate adjustment and stable locking of the optimal bending radian of the waist of a patient are achieved, and through cooperation with sequential hinging of a plurality of steering units in the steering assemblies, the optimal bending radian of the waist of the patient is adjusted. The whole radian can be flexibly adjusted to adapt to body types and age differences of different patients, the problems that in the prior art, manual supporting is prone to fatigue, and bandage fixing is difficult to achieve accurately are solved, it is ensured that the patient stably maintains the individualized optimal waist bending radian in the whole puncture process, the accuracy of intervertebral space exposure is improved, and the puncture difficulty is reduced.

An expandable interbody spacer including a first endplate and a second endplate, each with an outwardly facing surface, an inner facing surface, and two opposing isosceles-trapezoidal-shaped sidewalls. A motion assembly is located between the opposing sidewalls of both endplates, including a first motion guider with a smooth central cylindrical aperture, a second motion guider with a threaded central cylindrical aperture, and a screw with a screwhead and a partially threaded shank. The shank of the screw is positioned through the aperture in the first motion guider and into the aperture in the second motion guider. Clockwise rotation of the screwhead increases the height between the endplates by drawing the motion guiders together, while counterclockwise rotation decreases the height by moving them apart. The expandable interbody spacer permits controlled, in situ adjustment of height of the expandable interbody spacer to fit various intervertebral space requirements during spinal fusion procedures.

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 present invention relates to a prosthesis for implantation into an intervertebral space of a cervical vertebra, and specifically discloses an intervertebral fusion device, comprising: a fusion cage body having two end faces and a bone grafting window penetrating through the two end faces, the fusion cage body being implanted into the intervertebral space in such a manner that the two end faces thereof face end plates of two vertebrae, respectively; the bone plate is provided with through holes located in the upper portion and the lower portion respectively, the bone plate is arranged on the front side of the cervical vertebra and crosses two vertebrae defining an intervertebral gap, and the through hole in the upper portion and the through hole in the lower portion are opposite to the two vertebrae respectively; the bone screws penetrate through the through holes in the upper part and the lower part of the bone plate and are screwed into the vertebrae, so that the bone plate is respectively fixed with the two vertebrae; the linear component is provided with a near end and a far end, the near end of the linear component is attached to the middle of the bone plate, and the far end of the linear component extends into the intervertebral gap to be attached to the front side of the fusion cage body to limit displacement of the fusion cage body and maintain the fusion cage body in the middle area of the intervertebral gap.

The invention relates to the technical field of medical instruments, in particular to a three-screw-channel internal fixation 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 screw channels and connecting screw openings 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 utility model relates to the technical field of medical instruments, in particular to an interbody fusion cage which comprises an upper fusion plate, a lower fusion plate, a left traction block and a right pushing block, an upper sliding groove, a lower sliding groove, an upper protruding block and a lower protruding block are arranged on the upper fusion plate and the lower fusion plate, and a left sliding groove, a right sliding groove, a left protruding block and a right protruding block which are matched are arranged on the upper fusion plate, the lower fusion plate, the left traction block and the right pushing block. The upper fusion plate and the lower fusion plate are arranged on the left traction block and the right pushing block, adjusting assemblies for adjusting the distance between the upper fusion plate and the lower fusion plate are arranged on the left traction block and the right pushing block, and each adjusting assembly comprises an inner thread ring and a screw which are arranged on the left traction block and the right pushing block and matched with each other. The distance between the upper fusion plate and the lower fusion plate is adjusted, so that the interbody fusion cage adapts to the intervertebral space, and the problem of height adjustment of the interbody fusion cage is solved; the whole structure is simple, operation is convenient, and the success rate of surgery is improved.