13 results about "Fibrous ring" patented technology

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 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 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 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.

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 present disclosure relates to an artificial intervertebral disc, comprising an upper endplate configured to be connected with an upper vertebral body, a lower endplate configured to be connected with a lower vertebral body, and an elastic body arranged between the upper endplate and the lower endplate, wherein the elastic body comprises a multi-layer structure arranged in a top-down manner, each layer has a ring-shaped cross section, the ring-shaped cross section of each layer is composed of a plurality of n-shaped units, two adjacent edges of two adjacent n-shaped units are connected at an inner ring end of the ring-shaped cross section, and a longitudinal cross section of each layer also has an n-shaped structure, wherein the n-shaped structures of two adjacent upper and lower layers are arranged in a top-down alignment manner, and openings thereof face the inner ring and are connected with each other at the inner ring position; and a balloon having elasticity and arranged between the upper endplate and the lower endplate in a top-down direction and arranged in the ring-shaped cross section of the elastic body in a horizontal direction. By arranging the elastic body and the structure of the balloon, the cushioning and shock-absorbing functions of the annulus fibrosus and the nucleus pulposus of the human intervertebral disc are simulated, the artificial intervertebral disc has similar performance to the original human tissue, and the artificial intervertebral disc is easy to operate.

The invention relates to the technical field of medical apparatus and instruments, and provides a fibrous ring stitching instrument capable of performing continuous stitching and a use method.The stitching instrument comprises a handle assembly, an outer tube, an inner tube, a stitching needle and a pushing mechanism; one end of the outer tube is connected with the handle assembly, the other end of the outer tube is connected with the suture needle, and the suture needle is provided with an inner cavity; the inner tube is arranged in the outer tube and extends into an inner cavity of the suture needle, and a first cavity is formed between the inner tube and the outer tube; a first winding bar and a second winding bar are sequentially contained in an inner cavity of the suture needle and the inner tube in the axial direction away from the suture needle, the pushing mechanism is arranged in the handle assembly and comprises a pushing head operably stretching out of the handle assembly and a pushing rod connected with the pushing head, and the pushing rod stretches into the inner tube. According to the scheme, all the steps can be completed in two times of puncture only by operating the pushing mechanism, the suture process is greatly simplified, and the operation time is shortened.

The utility model relates to a fibrous ring stitching instrument which comprises a puncture stitching assembly and a handle percussion assembly. The puncture suture assembly comprises a puncture needle, a puncture push rod and a suture line, the puncture needle is of a hollow structure, a needle head is arranged at one end of the puncture needle, the puncture push rod is slidably arranged in the puncture needle and provided with a line storage groove, and two line knots of the suture line are located in the line storage groove and the head of the puncture push rod respectively. The handle percussion assembly comprises a handle shell, a percussion trigger, a limiting shifting button and a puncture push block, and the percussion trigger is connected with the puncture push block and rotates to drive the puncture push block to slide; the limiting shifting button can slide up and down along the handle shell to control the limiting position of the puncture push block, and therefore switching of the initial position, the first-time percussion position and the second-time percussion position of the puncture suturing assembly is achieved. Through the design of the spring pieces and the flexible damping blocks, the limiting sliding grooves and the side sliding blocks slide stably, and operation is stable. According to the utility model, one-hand operation is realized, the fibrous ring suturing process is simplified, and the fibrous ring suturing device has the characteristics of convenience in operation, accuracy in positioning, stability and reliability, is favorable for improving the operation efficiency, and is suitable for various minimally invasive operation scenes.

The utility model relates to medical education field especially, especially relates to a teaching lumbar puncture model, including spine component, contains a plurality of vertebra model and intervertebral piece, the intervertebral piece includes each other's connection nucleus pulposus model, annulus fibrosus model and yellow ligament model, bone component contains the sacrum model and ilium model connected, and is connected with spine component, ligament component contains interspinal ligament, muscle component is constituted by lower muscle model and upper muscle model, skin component covers on upper muscle model, and is equipped with the puncture hole of being able to penetrate in the target area corresponding position, the puncture hole penetrates upper muscle model, interspinal ligament and yellow ligament model in proper order, fixed component is used for supporting and fixed muscle component, the vertebra model, bone component adopts hard material to make, the intervertebral piece, ligament component, muscle component, skin component adopt flexible material to make. Its solved the technical problem that the simulation degree of existing lumbar puncture model is insufficient.

The application discloses a fiber ring suture device under a spinal endoscope, and relates to the technical field of fiber ring suture device equipment, and proposes the following scheme, which comprises a suture device mechanism, the front end of the suture device mechanism is connected with a suture device tip in a flexible manner, a needle tube turning mechanism is arranged at the rear end of the suture device tip, a suture thread anti-falling sleeve is arranged in the front end of the suture device tip, the suture device mechanism comprises a suture device handle, a wire outlet needle tube and a wire return needle tube are fixedly connected to the front end face of the suture device handle, and the wire outlet needle tube is located above the wire return needle tube. The suture thread clamping structure is arranged on the straight needle of the suture device, so that the suture thread extending from the bent needle head end to the straight needle can be prevented from falling off, secondary threading can be prevented, and the difficulty of suture operation is reduced. The straight needle and the bent needle part of the fiber ring suture device are arranged to be movable, and a connecting mechanism for adjusting the bending angles of the straight needle and the bent needle is connected between the straight needle and the bent needle and the suture device.

The application relates to a biological 3D printing cartilage-fiber-epithelium integrated tissue engineering trachea and a construction method and application thereof. First, cartilage specific biological ink is prepared by wrapping cartilage cells with cartilage tissue specific hydrogel; fiber specific biological ink is prepared by wrapping fibroblasts with fiber tissue specific hydrogel; epithelium specific biological ink is prepared by wrapping epithelial cells with matrix hydrogel; then, through a step-by-step assembly strategy, a C-shaped cartilage ring and a fiber ring are alternately printed and a ring-shaped tubular structure is formed by using a double-needle extrusion type biological 3D printing technology, and then a layer of epithelium specific biological ink is attached in the lumen to construct a tubular structure of cartilage-fiber-epithelium multi-tissue composite; it is verified that after being implanted subcutaneously in a naked mouse for 8 weeks, a relatively mature cartilage-vascularized fiber-epithelium tissue composite tissue engineering trachea can be regenerated, and a clinically transformable strategy is provided for the regeneration treatment of complex tracheal injury.