53 results about "Fibrous ring" patented technology

The invention discloses a fiber ring repairing device. The fiber ring repairing device comprises a degradable elastic restraining bag and filler filled in the elastic restraining bag. Space in the elastic constraint bag comprises a positioning space, a supporting space and a limiting space, and the filler comprises first filler and second filler. The first filler is located in the positioning space, fixed in shape to form a positioning part, located on the outer side of the fiber ring crevasse and used for conveying and positioning. Corresponding parts of the supporting space and the limiting space in the elastic constraint bag can be folded under the non-filling condition and then enter the fiber ring crevasse, and then the second filling part flows into the supporting space and the limiting space and forms a supporting part and a limiting part after being solidified. And the part, corresponding to the supporting space, in the elastic constraint bag can be elastically deformed under the filling of the second filler so as to adapt to the shape of the crevasse of the fiber ring. The limiting part is located on the inner side of the fibrous ring crevasse, provided with a limiting face abutting against the inner side wall of the periphery of the fibrous ring crevasse and used for preventing the fibrous ring repairing device from being extruded out of the fibrous ring crevasse by the nucleus pulposus.

Systems and methods can be employed for facilitating access and procedures in the outer, middle, and inner ear in order to diagnose or treat ear disorders including, but not limited to hearing loss and excessive ear wax. In some examples, the systems and methods include instruments and techniques that facilitate trans-tympanic membrane or trans-fibrous ring access to the middle ear. The systems and methods can also be used to improve accessibility for various otological surgical procedures, such as, but not limited to, cholesteatoma removal, tympanic membrane repair and ossicular chain repair.

The invention discloses a fibrous ring stitching instrument, belongs to the technical field of medical instruments, and solves the technical problems of long stitching time and poor adaptability of a fibrous ring stitching instrument in the prior art. The suture needle assembly comprises a puncture piece and a clamping seat. The puncture part comprises a shuttle, and a push rod, a grabbing rod, a puncture needle and a sheath tube which are sequentially sleeved from inside to outside, and the shuttle is used for clamping a suture; the suture needle control assembly is used for enabling the puncture part to drive the suture to penetrate from the first side to the second side of the material and then penetrate from the second side of another position of the material to the first side; the clamping seat is used for receiving the shuttle on the second side of the material; the handle shell is used for fixing the suture needle assembly and the suture needle control assembly and comprises a fixed part and a movable part movably connected with the fixed part. According to the fibrous ring stitching instrument, more demand scenes can be met, the stitching success rate is increased, or the stitching time is shortened.

The invention discloses a tissue engineering integrated trachea regeneration construction method based on a frame structure scaffold and application. A multi-tissue-structure integrated gas pipe is constructed based on a 3D printing bioelastomer frame structure support, and the complex structure and physiological functions of a natural gas pipe are highly simulated. The preparation method comprises the following steps: firstly, by utilizing the characteristic that temperature-sensitive hydrogel Pluronic F-127 becomes semi-solid gel at 37 DEG C and is liquefied at a low temperature of 4 DEG C, and by adopting a strategy that the temperature-sensitive hydrogel is sacrificed after occupying, the patterned distribution of chondrocytes and fibroblasts on a two-dimensional plane is realized; secondly, simulating a three-dimensional tubular trachea structure through a 2D-3D (two-dimensional to three-dimensional) rolling assembly strategy, and realizing the ordered regeneration of C-shaped cartilage ring / O-shaped fiber ring alternate distribution and axial strip-shaped fiber bundle triple structures under the skin of the nude mouse. And finally, successfully extracting the airway mucosa epithelium, separating and amplifying enough airway basal cells in vitro, and loading the airway basal cells to the inner wall of the regenerated trachea by utilizing the photo-crosslinking hydrogel, thereby realizing the function simulation of the airway epithelium and enhancing the physiological functionality.

The invention provides a single-line lumbar intervertebral disc fibrous ring crevasse suture needle, and belongs to the technical field of medical instruments. According to the suture needle instrument, firstly, through the design that the screw sleeve rod is matched with the screw head, the suture needle sleeve is matched with the suture needle and then the two ends of the suture are fixedly connected to the screw head and the suture needle respectively, when medical staff use the needle instrument, firstly, the screw head is placed into the bone surface on one side of a fibrous ring crevasse, and then the screw head is separated from the screw sleeve rod in the axial direction; then, a suture needle penetrates from one side of the fiber ring crevasse to the other side of the fiber ring crevasse, and suture of the fiber ring crevasse is completed; compared with a suture needle which uses two sutures and the suture fixedly connected with the screw head needs to be knotted with a slipknot, the single-line lumbar intervertebral disc fibrous ring crevasse suture needle has the advantages that the operation is simpler, the suture is firmer, and the problems that in the prior art, the suture needle needs two sutures to be knotted and fixed, and the suture needle is inconvenient to use are solved. The operation is inconvenient; and the cut of the sewed fiber ring is easy to crack again.

The invention relates to the technical field of medical instruments, and discloses a precise positioning fibrous ring stitching instrument and an operation method thereof.The precise positioning fibrous ring stitching instrument comprises a shell, a rack is arranged at the bottom end of the interior of the shell, a gear is connected to the tooth end of the rack in a meshed mode, a first rotating shaft is fixedly arranged on one side of the gear, and the outer wall of the first rotating shaft is rotationally connected to the outer wall of the shell; the first rotating shaft penetrates through the shell and is fixedly provided with a knob, the knob is located on the side wall of the shell, a first puncture needle is arranged on the side wall of the shell, a thread guide needle is fixedly arranged at one end of the rack, the outer wall of the thread guide needle is arranged in the first puncture needle, and a sewing mechanism is arranged in the second puncture needle and the shell. A shearing mechanism is arranged in the second sliding groove of the shell. The fixed handle and the movable handle are operated through the suturing mechanism, the clamping head and the clamping block are used for conveniently clamping and processing the suturing line, complexity of traditional suturing operation is simplified, suturing efficiency is improved, and the problem that suturing operation is tedious is solved.

The application discloses a kind of annulus fibrosus repair devices, including degradable elastic constraint bag and filling in it.Filling in the space of elastic constraint bag includes positioning space, support space and limiting space, and filling includes first filling and second filling.First filling is located in positioning space and is fixed in shape to form positioning part, located outside the annulus fibrosus break, for conveying positioning.Elastic constraint bag corresponding part in support space and limiting space can be folded after being filled into the annulus fibrosus break, then second filling part flows into support space and limiting space and forms support part and limiting part respectively after coagulation.Elastic constraint bag corresponding part in support space can be elastically deformed to adapt to the shape of annulus fibrosus break under the filling of second filling.Limiting part is located inside the annulus fibrosus break, with limiting surface abutting with the inner wall around the annulus fibrosus break, for preventing annulus fibrosus repair device from being extruded from the annulus fibrosus break by nucleus pulposus.

The present invention discloses an annulus fibrosus suture device, belonging to the technical field of medical devices, and solves the technical problems of long suture time and poor adaptability of the annulus fibrosus suture device in the prior art. It includes a suture needle assembly, and the suture needle assembly includes a piercing member and a clamping seat; the piercing member includes a shuttle and a push rod, a grasping rod, a piercing needle and a sheath tube which are sleeved from the inside to the outside in sequence, and the shuttle is used for clamping the suture; a suture needle control assembly, which is used to drive the piercing member to penetrate the suture from the first side of the material to the second side, and then penetrate from the second side at another position of the material to the first side; the clamping seat is used to receive the shuttle on the second side of the material; a handle housing, which is used to fix the suture needle assembly and the suture needle control assembly, and includes a fixing part and a movable part movably connected to the fixing part. The annulus fibrosus suture device of the present invention can meet more demand scenarios, improve the suture success rate or shorten the suture time.

A solid-liquid composite multifunctional bionic intervertebral disc belongs to the technical field of bionic intervertebral discs. The upper end plate assembly, core layer and lower end plate assembly of the present invention are arranged in sequence from top to bottom and fixedly connected; the upper end plate assembly and the lower end plate assembly have the same structure, and the end plates are provided with coatings, nail tooth groups and micropore groups; the core layer is composed of a nucleus pulposus, a transition ring and four fibrous rings arranged and fixedly connected from the inside to the outside, and the nucleus pulposus is made of a low-acyl gel and agarose of a liquid core injected into a cellulose sponge of a solid skeleton of a soft support structure; the surfaces of the transition ring and the four fibrous rings are coated with collagen fibers, and the slopes of the collagen fibers of each two layers are staggered with each other; the present invention has cushioning and shock absorption, dynamic anti-fatigue functions, good spinal motion matching and anti-compression and anti-shear mechanical properties.

The invention relates to the technical field of medical instruments, and discloses a fiber ring suturing device which comprises a suture, a suturing needle and a pushing rod which are used in cooperation, the pushing rod comprises a rod body and a pushing piece, the rod body is located in the suturing needle, a sliding groove is formed in one side of the rod body in the length direction, and a first notch is formed in the bottom of the rod body; the first notch is used for clamping a T-shaped thread knot of a suture and pushing the T-shaped thread knot to the needle point of the suture needle; the pushing part is connected to the sliding groove in a sliding mode, and after the T-shaped thread knot is pushed to the needle point of the suture needle, the pushing part slides towards the needle point of the suture needle along the sliding groove and pushes the suture line above the T-shaped thread knot to move towards the needle point, so that the T-shaped thread knot is pushed out of the opening in the needle point of the suture needle. By arranging the rod body and the pushing piece, the suture cannot be accumulated in the suture needle, the T-shaped suture knot can completely stretch out of the opening of the needle point of the suture needle to enter the fiber ring, and the success rate of suture of the fiber ring is increased.

The invention relates to an intervertebral disc annulus fiber opening tool for intervertebral fusion surgery, which effectively solves the problem that when the annulus fiber of the intervertebral disc is cut, nerve roots and spinal cord dura mater are easily damaged, thereby causing serious consequences. The lower end of the handle is connected to a side wall of a sleeve to form a hook-shaped structure, a through hole is provided in the center of the sleeve, and a side wall where the sleeve and the handle are connected is an arc-shaped side wall that is convex toward the center of the sleeve, the upper and lower sides of the arc-shaped side wall are both horizontal straight lines, and the left and right sides are curved in an arc shape, a knife body is installed in the through hole in the center of the sleeve from top to bottom, the knife body is composed of a handheld part and a knife head, the lower end of the handheld part is connected to the knife head, the knife head is an isosceles triangle arc with a tip downward, and both sides of the isosceles triangle arc are blades. The invention is easy to use, has good effect, saves time and labor, is easy to operate, and greatly improves the safety of surgical operation.

The present invention discloses an annulus fibrosus patch and an annulus fibrosus repair method. By providing corresponding suture units at the folding ends of the foldable patch, the suture units include sutures and suture needles. The sutures are respectively connected to the corresponding folding ends of the foldable patch and the tail ends of the suture needles. The suture needles are used to extend into the inner side wall of the inner layer of the annulus fibrosus and initially drive the sutures to pass from the inner layer to the outer layer of the annulus fibrosus. After the foldable patch is implanted on the surface of the inner side wall of the inner layer of the annulus fibrosus in a folded state, it can be driven to unfold by the sutures. After the foldable patch unfolds, the suture needles can be operated to further drive the sutures to pass through the outside, so that the self-locking unit at the first end of the suture can fit or embed into the inner layer of the annulus fibrosus to achieve relative position fixation relative to the annulus fibrosus, achieving the purpose of attaching the foldable patch to the inner side wall of the annulus fibrosus rupture. During the repair process, only the suture needles and the foldable patch need to be inserted, and the annulus fibrosus repair can be completed by the suture needles driving the sutures and the self-locking unit. The operation is simple, solving the problem of complex operation of the existing annulus fibrosus repair surgery.

The invention relates to the technical field of medical instruments, and discloses a UBE surgery fibrous ring suturing device and a knotting-free suturing method.The UBE surgery fibrous ring suturing device comprises a first suturing instrument, a second suturing instrument, a third suturing instrument and a surgical suture line; each of the first stitching instrument, the second stitching instrument and the third stitching instrument comprises a first stitching instrument shell, a second stitching instrument shell, a push rod assembly and a needle cylinder; the first stitching instrument shell and the second stitching instrument shell are connected in an interference fit mode through the connecting pins and the connecting holes. The lower portion of the push rod assembly is arranged in the needle cylinder and can move freely, the upper portion of the push rod assembly is connected with the second stitching instrument shell through a gear and a rack to move up and down, and left-right movement of the push rod assembly is limited through a sliding way on the first stitching instrument shell. Through the cooperation of the surgical suture line and the stop strip, a fixed structure is formed under intervertebral disc fibrous ring tissue, in-vitro knotting is not needed, the suture line keeps stable through the interaction of the stop strip and the coil after vertically penetrating the tissue, and postoperative complications are reduced while it is ensured that suturing is firm.

The invention discloses a near end plate fiber ring stitching instrument, and belongs to the technical field of medical instruments. The device comprises a shell, a puncture needle component, a push and guide needle component, a bone anchor component, a slide way rotating shaft component and a reversing rotating handle component are arranged in the shell, and the reversing rotating handle component partially penetrates through the shell and is exposed; the puncture needle component and the push and guide needle component are positioned on the same straight line, are restrained on a slideway of the slideway rotating shaft component, and have degrees of freedom of approaching and leaving from each other; a sliding gear is arranged on the reversing rotating handle part, a gear A is arranged on the bone anchor part, a gear B is arranged at the tail end of the slideway rotating shaft part, and the sliding gear can be selectively matched with the gear A or the gear B. The umbrella-shaped structure made of rubber and located at the head of the suture can be pressed in the fiber ring after being opened, and the problem that a transverse supporting structure is prone to disengagement is solved; by means of the titanium alloy bone anchor with the tantalum coating, the problem that the damaged near-end-plate area of the fiber ring is difficult to suture and repair is solved, and meanwhile the fusion repair process is accelerated.

1. The name of the design product: handle (annulus fibrosus suture device). 2. The use of the design product: for lumbar intervertebral disc annulus fibrosus suture device handle. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The fiber ring stitching instrument comprises a handheld part, a rod body coaxially connected with the handheld part and a U-shaped hook body connected to the far end of the rod body, the back side wall and the abdomen side wall of the handheld part, the back side wall and the abdomen side wall of the rod body and the back side wall and the abdomen side wall of the U-shaped hook body are provided with a continuously-penetrating U-shaped groove and a circular channel respectively, and the U-shaped groove forms a U-shaped opening in the end of the U-shaped hook body. A penetrating hole is formed in the end of the U-shaped hook body, a flexible ejector rod is arranged in the circular channel, when the flexible ejector rod is pressed, the far end of the flexible ejector rod can push out a line knot or an anchor rod embedded in the end of the U-shaped hook body, the line is wound in the U-shaped groove, one end of the line is knotted or connected with the anchor rod and embedded in the tip end of the U-shaped hook body, and the other end of the line is located at the top end of the handheld part. After being tensioned, the nut is fixed by a nut at the top end of the handheld part; the device is used for a suture mode of threading from the inside to the outside of the fiberoptic ring crevasse under a spine endoscope, is simple to operate, and can obviously reduce the probability of false healing of the fiberoptic ring.

The invention provides a disposable fibrous ring stitching instrument, and relates to the technical field of medical instruments. The stitching instrument comprises a handle shell, a stitching assembly, a transmission assembly and a driving assembly, and the transmission assembly is located in the handle shell and connected with the driving assembly to drive the stitching assembly. The suturing assembly comprises a needle tube, a puncture needle and a thread needle, the needle tube is fixed at the front end of the handle shell, and fixing plates are arranged at the tail ends of the puncture needle and the thread needle respectively and can slide in the handle shell. The driving assembly comprises a trigger and a side key, the trigger controls the needle to move, the side key controls the puncture needle to move, and therefore puncture and suture operation is achieved. The transmission assembly comprises a side sliding block, a duplicate gear, a transmission rack and a driving rack, the side key is used for driving the side sliding block to slide downwards and driving the puncture needle, and the trigger controls the needle to penetrate. According to the invention, the convenience of single-hand operation is realized, the man-machine engineering design is optimized, the operation steps are simplified, and the device is suitable for repairing the annulus fibrosus in minimally invasive surgery and has higher clinical application value.

The present invention discloses a method for preparing fibrochondrocytes with high regeneration and passage, a product and application thereof, and develops a maintenance culture medium formula that can stably expand a large number of cells in vitro, belonging to the field of cell biology and regenerative medicine. The method aims at the problems of limited proliferation of autologous fibrochondrocytes in current clinical applications, poor repair effect, trauma caused by sampling, and relatively poor safety. A method for efficiently deriving fibrochondrocytes with high regeneration ability from hiPSCs is invented by manipulating the transforming factor TGFβ3, Shh (Sonic hedgehog) and retinoic acid RA signaling pathways. Since the experimental operation of the method is relatively simple, the fibrochondrocytes produced can be expanded in large quantities and maintain cartilage characteristics for a long time under the conditions of the maintenance culture medium, and can be used as a potential therapy for the regeneration and repair of dense connective tissues (including tendons, ligaments, menisci and annuli) in the future.

The invention discloses an intervertebral disc annulus fibrosus repairing material, a scaffold and application of the intervertebral disc annulus fibrosus repairing material and the scaffold. The intervertebral disc annulus fibrosus repairing material comprises magnesium-silicon nanofibers, tannic acid (TA) and transforming growth factor beta (TGF-beta), and the magnesium-silicon nanofibers comprise self-assembled magnesium-silicon-oxygen nanosheets; the magnesium-silicon-oxygen nanosheet is wrapped by tannic acid; the TGF-beta is connected to the tannic acid through a reversible chemical bond. According to the present invention, the immune microenvironment is adjusted so as to enhance the extracellular matrix (ECM) expression of fibrous ring stem cells (AFSCs);

The present invention discloses an annulus fibrosus suturing device, belonging to the technical field of medical devices, and solving the technical problems of long suturing time and poor adaptability of the annulus fibrosus suturing device in the prior art. It includes a suture needle assembly, and the suture needle assembly includes a puncturing member and a clamping seat; the puncturing member includes a shuttle, and a push rod, a grasping rod, a puncture needle and a sheath tube which are sleeved from the inside to the outside, and the shuttle is used for clamping a suture; a suture needle control assembly, which is used for enabling the puncturing member to drive the suture to penetrate from the first side of the material to the second side, and then penetrate from the second side at another position of the material to the first side; the clamping seat is used for receiving the shuttle on the second side of the material; a handle housing, which is used for fixing the suture needle assembly and the suture needle control assembly, and includes a fixing part and a movable part movably connected to the fixing part. The annulus fibrosus suturing device of the present invention can meet more demand scenarios, improve the suture success rate or shorten the suturing time.

The invention provides a fibrous ring stitching instrument, and belongs to the technical field of medical instruments. The clamp-shaped suture front end comprises a pair of arc-shaped forceps claws which are rotationally connected through a hinge part, a sharp part is arranged at the front end of each arc-shaped forceps claw, the two sharp parts are provided with matched diagonal planes, and a lead hole communicated with the diagonal planes and the rear ends of the arc-shaped forceps claws is formed in each arc-shaped forceps claw. The pair of arc-shaped clamp claws has an unfolded state and a closed state, and in the closed state, the two sharp parts are aligned and abut against each other through the diagonal planes, and the lead holes are in butt joint, so that the pair of arc-shaped clamp claws jointly define a complete annular structure; in the unfolded state, the two sharp portions are separated from each other. The technical problems that the threading success rate is low and the operation efficiency is affected due to the defects of an existing fibrous ring suturing means can be solved.

The invention is suitable for the technical field of cleaning equipment, and provides a surgical instrument cleaning device based on fibrous ring suture surgery and a using method thereof.The cleaning device comprises a mounting frame and a cleaning assembly, and the cleaning assembly comprises a cleaning frame, a side plate, an adjusting mechanism, a first cleaning mechanism, a second cleaning mechanism and a water spraying mechanism; the water spraying mechanism comprises a shear fork mechanism and a water hose, the cleaning frame comprises a first side frame and a second side frame which define a rectangle, the conveying rollers comprise a first rotating roller and a second rotating roller which are coaxially arranged, and the adjusting mechanism comprises a threaded rod and a third stepping motor. According to the surgical instrument cleaning device based on the fibrous ring suture operation, by arranging the mounting frame and the cleaning assembly, when the number of surgical instruments to be cleaned is increased, the cleaning frame is adjusted to be widened through the adjusting mechanism, so that the conveying rollers are lengthened, the conveying belt is widened, the number of the conveyed and cleaned surgical instruments is increased, and the cleaning efficiency is improved; and the water spraying range of the water spraying mechanism can be adaptively adjusted.

The invention provides an energy output control method and system based on a composite catheter. The energy output control method comprises the steps that a radio frequency electrode is pushed to the far end of the composite catheter; radio frequency energy is output to the target intervertebral disc protrusion tissue through the radio frequency electrode, so that the size of the target intervertebral disc protrusion tissue is reduced, and a cavity is formed; normal saline is injected into the cavity, and the far end of the optical fiber is pushed to the cavity through an optical fiber channel in the composite catheter; laser energy is output to the fiber ring near the cavity through the optical fiber to solidify the fiber ring near the cavity. The cavity formed by the target intervertebral disc protrusion tissue can separate the nerve root from the target intervertebral disc which is not ablated, so that the compression of the target intervertebral disc protrusion tissue on the nerve root can be obviously reduced; the heat effect of the laser can be utilized to act on the fibrous ring of the collagen, so that the fibrous ring of the collagen is shrunk and thickened, equivalently, the fibrous ring is reinforced, and the recurrence of the target intervertebral disc protrusion is effectively prevented.

The utility model relates to an intervertebral disc fibrous ring opening device which comprises a driving part and a fibrous ring opening assembly arranged at one end of the driving part. The fiber ring opening assembly comprises a fiber ring containing part and a fiber ring fixing part arranged in the fiber ring containing part, one end of the fiber ring containing part and one end of the fiber ring fixing part are both fixedly connected with the driving end of the driving piece, and the other end of the fiber ring fixing part extends out of the fiber ring containing part. According to the intervertebral disc fibrous ring opening device, the fibrous ring can be fixed through the fibrous ring fixing part, so that sliding between the intervertebral disc fibrous ring opening device and the fibrous ring can be avoided, and meanwhile the intervertebral disc fibrous ring opening device can be fixed through the fibrous ring opening structure formed by the fibrous ring containing part and the fibrous ring fixing part. According to the intervertebral disc opening device, the intervertebral disc fibrous ring is opened, so that a regular opening is obtained, the regular opening is not prone to damaging surrounding blood vessels, the visual field under an endoscope is clear, and follow-up operation in the intervertebral disc is facilitated.

The invention relates to the field of fiber ring suturing, in particular to a fiber ring suturing instrument which comprises a fixing shell, a suturing assembly is arranged in the fixing shell, a holding assembly is arranged on the outer wall of one end of the fixing shell, an adjusting assembly is arranged in the holding assembly, the suturing assembly comprises two circular grooves, and sliding grooves are formed in the inner walls of the circular grooves; a circular groove is formed in the surface of the fixing block, a fixing block is clamped in the circular groove, one side of the fixing block is fixedly connected with a nail head, a clamping groove is formed in the surface of the nail head, an extrusion block is clamped in the clamping groove, and a circular hole is formed in the surface of the fixing block. The two fixing blocks drive the two nail heads to be close to each other, crevasses in the fiber rings are pressed to be attached to each other, the nail heads can flexibly move in the circular grooves by means of the elasticity of the rubber ropes and the structure of the circular grooves, and therefore precise suturing of the fiber rings is achieved, and the suturing efficiency and quality are improved.

The invention relates to an intervertebral disc fibrous ring tissue engineering repair material and application thereof, and aims to solve the problems of difficult fibrous ring repair, high recurrence rate, complicated operation and the like in the prior art. The repair material provided by the invention has excellent biocompatibility, superelasticity and shape memory effect, and can effectively promote regeneration and repair of the annulus fibrosus, significantly improve the surgical effect and reduce postoperative recurrence. The repairing material comprises one or more compounds of collagen, acellular matrix protein, gelatin polylactic acid and expanded polytetrafluoroethylene. The materials act together to support the growth of a plurality of cells such as chondrocytes, fibroblasts and mesenchymal stem cells, provide extremely high mechanical stability and biological activity, and are suitable for being used in a complex living body environment. Through specific chemical and physical treatment processes, the composite materials are assembled into the intervertebral disc fibrous ring tissue engineering repair material capable of supporting and repairing damaged intervertebral discs. The repair material and method provide a new solution for treatment of intervertebral disc degenerative diseases, and have wide application prospects and clinical values.

In accordance with at least one aspect of this disclosure, a disc replacement implant includes, a first endplate configured to engage a vertebral endplate of a first vertebra adjacent an intervertebral space, a second endplate configured to engage a vertebral endplate of a second vertebra opposite the first end plate in the intervertebral space, a core between the first and second endplates, and an annulus surrounding the core and connecting a perimeter of the first endplate to a perimeter of the second end plate. In embodiments, the annulus can include a portion that extends inwardly between the first and second core plates to the spacer.

The invention relates to the technical field of medical instruments, in particular to a vertebral plate non-fusion fixing device which comprises a vertebral plate fixing body. The upper supporting surface of the vertebral plate fixing main body is also provided with a backward movement prevention bulge; the anti-backward-movement bulge is of a triangular structure and is matched with the triangular three-dimensional space at the lower dome position of the vertebral plate in shape; and the backward movement prevention bulge is in direct contact with the lower dome of the vertebral plate so as to prevent the fixing device from moving towards the vertebral body of the spine. The vertebral plate non-fusion fixing device is installed at the vertebral plate gap position of adjacent vertebral bodies in the spine posterior non-fusion operation in a matched mode, the vertebral plate gap is expanded and fixed, and the folded posterior longitudinal ligament and the fibrous ring are stretched, so that the spinal canal stenosis degree is reduced, meanwhile, the upper diameter and the lower diameter of intervertebral foramen of the same section are increased, the nerve root canal cross section area is enlarged, and the spinal canal stenosis degree is improved. The nerve root stress is relieved. The fixing device can further enhance the stability of the spine at the segment, and meanwhile the spine motion range of the segment is reserved.

The invention discloses a spinal endoscope fiber ring stitching instrument, relates to the technical field of fiber ring stitching instrument equipment, and provides the following scheme that the spinal endoscope fiber ring stitching instrument comprises a stitching instrument mechanism, the front end of the stitching instrument mechanism is flexibly connected with a stitching instrument tip, and a needle tube steering mechanism is arranged at the rear end of the stitching instrument tip; a suture thread anti-falling sleeve is arranged in the front end of the stitching instrument tip, the stitching instrument mechanism comprises a stitching instrument handle, a thread outlet needle tube and a thread return needle tube, the thread outlet needle tube and the thread return needle tube are fixedly connected to the end face of the front end of the stitching instrument handle, and the thread outlet needle tube is located above the thread return needle tube. The straight needle of the stitching instrument is provided with the suture clamping structure, so that the suture extending into the straight needle from the head end of the bent needle is prevented from falling off, secondary threading is prevented, and the difficulty of stitching operation is reduced. A straight needle and a curved needle of the fiber ring stitching instrument are arranged to be movable, and a connecting mechanism for adjusting the bending angle of the straight needle and the curved needle is connected between the straight needle and the curved needle and the stitching instrument.

The present invention relates to the technical field of medical devices, and discloses a nerve retractor, which includes a strip-shaped main body, a tongue arranged at the front end of the main body, and a handle arranged at the rear end of the main body. The main body and the tongue are both flat, and the width of the tongue is smaller than that of the main body. When in use, the tongue is first inserted into the intervertebral space from the opening of the annulus fibrosus along an expansion core that matches it. At this time, the wider main body is stuck at the opening and remains outside the intervertebral space. Then the nerve retractor is rotated to block the passing root or exit root of the nerve, so that a channel can be reserved for the insertion of a fusion device. Based on the above structure, since the force point of the nerve retractor is on the end plate rather than on the nerve root, the position of the nerve retractor will not cause a large slip or loosening due to the insertion of the fusion device or the change of the assistant's strength, so that the nerve root can be protected more efficiently and safely, and the irritation or damage to the nerve root can be reduced. At the same time, the burden of the assistant can be reduced, making it easier.