399 results about "Vertebral pedicle" patented technology

An endoscopic pedicle probe for use during spinal surgery to form a hole in a pedicle for reception of a pedicle screw has an enlarged proximal end for cooperation with the hand of the surgeon and an elongate shaft terminating in a distal tip that may be pushed through the pedicle to form the hole. An integrated endoscope and light extend through the shaft to enable the surgeon to visually observe the target area, and a conduit extends through the shaft to convey a fluid to irrigate the target area. In a preferred form the probe is connected with an electromyographic or mechanomyographic monitoring system to alert the surgeon when a breach is about to occur. In a further embodiment, two endoscopes are associated with the probe. The complete probe may be disposable, or just the tip may be detachable for disposal or replacement.

A vertebral pedicle screw includes a screw body driven into a vertebral pedicle, a housing assembled to an upperend of the screw body and having grooves for seating a rod and a threaded portion for locking a fastening bolt, the fastening bolt pressing the rod positioned thereunder as it is threaded downward, and a fastening ring inserted into the housing. The vertebral pedicle screw further includes an insert placed on an outer surface of a screw head of the screw body in the housing, installed to be partially come into contact with the fastening ring on an upper portion thereof, and accommodating the screw head ofthe screw body on a curved inner surface thereof such that the insert and the screw head are brought into sliding contact with each other, whereby an entire rod-side assembly can be slidingly moved in all directions with respect to the screw body.

The invention relates to the field of medicine, in particular to a spine pedicle screw implanting and locating device. The spine pedicle screw implanting and locating device comprises hardware of a C-shaped arm, an image correction calibration plate, an image collection module, a locating robot, a path locating frame, a position tracking platform, a computer and the like, a spine pedicle screw implanting path planning module and a locating navigation module based on an X ray picture during an operation, wherein the spine pedicle screw implanting path planning module and the locating navigation module are stored in the computer. Through the spine pedicle screw implanting and locating device, according to the anatomical structure characteristics of a spine vertebral body, a coordinate system is established, an operation path planned in a 3D environment before the operation, an operation path planned in a 2D environment during the operation and an operation apparatus path during the operation are expressed, and by the use of the relationship of the three paths, a doctor is guided or a robot is controlled to complete precise operation path locating operation. The spine pedicle screw implanting and locating device can track the position relationships among all objects on a 2D image in real time, reflect the relationship between a tool and pedicle of vertebral arch actually, precisely and timely, eliminate errors of the traditional computer navigation system in an operation process, reduce the operation difficulty, and improve the operation efficacy.

A transfacet-pedicle locking screw fixation assembly includes a plurality of pedicle screws each including threads at a distal end and a connecting receptacle at a proximal end. The connecting receptacle is oriented perpendicularly with respect to a longitudinal axis of the pedicle screw. A basic transfacet locking screw including threads at least at a distal end has the distal end engaging the connecting receptacle in one of the pedicle screws. The transfacet locking screw may also be interlocked with another transfacet locking screw.

The invention discloses a method for utilizing three-dimensional modeling for looking for an optimum inserting point for inserting a pedicle screw. The method comprises the steps that firstly, an optimum channel plane for inserting the pedicle screw is determined, then an optimum safety channel for inserting the pedicle screw is determined, and finally the optimum inserting point for inserting the pedicle screw is determined. The inserting point is located through the method, a patient does not need to be in contact with X-rays, trauma is reduced, operation time is saved, and no matter whether the vertebral pedicle and the zygopophysis of the centrum of the patient are varied or varied to a certain degree, the accuracy and success rate of inserting the pedicle screw at one time are high.

A nucleus replacement mimics a native annulus in shape and function for use in partial disc arthroplasty. The nucleus replacement includes a jacket having a compartment, a first anchoring limb on one side of the compartment, and a second anchoring limb on an opposite side of the compartment. The jacket is insertable into a disc space through an operating channel in at least one of the vertebral pedicle and the vertebral body. A shock absorbing material is injectable into the compartment after installing the jacket into the disc space. The shock absorbing material has characteristics that absorb loads on the replacement.

The invention discloses a three-dimensional positioning and guiding device for penetrating a vertebral pedicle through skin. The three-dimensional positioning and guiding device for penetrating the vertebral pedicle through the skin comprises a base, dip angle measuring devices and a measuring device supporting rod, wherein guiding grooves are arranged in length wise frame edges of the base, two dip angle measuring devices are matched on the measuring device supporting rod in a sliding mode, and an arc-shaped guiding groove is arranged in each dip angle measuring device. A bar-shaped hole is arranged in the measuring device supporting rod, a puncture needle guiding tube is in hinge joint with the dip angle measuring devices, and the puncture needle guiding tube penetrates through the bar-shaped hole. A guiding pin is arranged on the puncture needle guiding tube and is matched with the arc-shaped guiding grooves, marking needle fixing holes are arranged in the middle portion of the measuring device supporting rod, and two ends of the measuring device supporting rod are cylindrical segments. The measuring device supporting rod is matched with the guiding grooves in a sliding mode through sliding blocks, the cylindrical segments of the measuring device supporting rod extend out of the sliding blocks and are connected with a positioning rod, and the positioning rod is in the same plane with the measuring device supporting rod and the puncture needle guiding tube. The three-dimensional positioning and guiding device for penetrating the vertebral pedicle through the skin is capable of three-dimensional positioning and guiding and shortening the operation time, high in efficiency, accurate in guiding and capable of improving the achievement ratio of operation.

The invention discloses a 3D printing percutaneous vertebral pedicle guide plate, a preparation method of the 3D printing percutaneous vertebral pedicle guide plate, and a using method of the 3D printing percutaneous vertebral pedicle guide plate. The guide plate comprises a wavy panel which can be attached to the spine of a human body, the panel is provided with two hollow input sleeves used for pedicle screws to penetrate through, and a first layer sleeve, a second layer sleeve and a third layer sleeve are sequentially arranged inside each inlet sleeve from inside to outside. The preparation method of the 3D printing percutaneous vertebral pedicle guide plate comprises the steps of the building of a three-dimensional geometrical model, the determination of pedicle screw channels, the generation of the guide plate, 3D printing and sleeve installation. The 3D printing percutaneous vertebral pedicle guide plate is simple in structure and convenient to prepare. In the preparation process of the guide plate, machining is carried out on the designed guide plate in advance according to a body surface mark so that locking can be achieved for body surface positioning, it is guaranteed that the inlet sleeves and the pedicle screw channels are coaxially arranged, displacement is prevented, and it is guaranteed that the direction of puncturing and the direction of screw placement are accurate; through the guide plate, the placement depth is accurate, fluoroscopy does not need to be carried out repeatedly, surgical accuracy is improved, and surgical time is shortened.

The invention relates to a production method for a guide template. The production method comprises the following steps of: at first, importing CT (computed tomography) serial sectional image data into three-dimensional rebuilding software such as Mimics 10.01 for three-dimensional model rebuilding by CT scanning; then, designing a guide plate with vertebral pedicle positioning guide holes in the two sides of a single vertebral body on a digital lumbar vertebra anatomical model subjected to three-dimensional rebuilding; and finally, producing the template by a laser irradiation layer-by-layer curing and forming technology. The guide template produced by the method can be satisfactorily and closely combined with the vertebral body, can be used for accurately positioning and orienting vertebral pedicle, and guarantees the correct implantation position and direction of vertebral pedicle screws.

The invention discloses a three-dimensional adjustable combined guiding system for assisting in implanting screws into the vertebral pedicle, and belongs to the field of medical instruments. The purpose is to solve the problem that when the screws are implanted in a spine surgery operation, accurate guiding can not be achieved if only depending on experience estimation and manual operation. The guiding system comprises a sliding rail, spinous process fixing clamps, a drilling angle adjustor, retractable abduction frames and vertebral pedicle screw guiding tubes. A designing conception and a using method are characterized in that a, before an operation, the optimal needle inserting angle is accurately measured according to imageological examination; b, according to the result, the drilling angle adjustor is adjusted to lock the angle so that the unique accurate screw implanting angle of three-dimensional space can be determined; c, the drilling angle adjustor moves along the sliding rail, and the length of the retractable abduction frame is adjusted and locked to control the distance between a screw-entering point and the central axis of the spinous process so that the guiding tubes can be tightly attached to the needle-entering point; d, screw implanting operation is performed inside the guiding tubes. The guiding system can be adjusted and combined. Experience estimation of implanting the screws into the vertebral pedicle is changed into quantified measurement, screw implanting safety and accuracy are high, and operability is high.

A boring instrument guiding device which is used to guide a boring instrument that forms a pilot hole for embedding a pedicle screw in a vertebral pedicle includes a reference pin 3 which is used as a reference by being inserted into the vertebral arch from the rear to the front of a spine, and an arm 4 which extends sideward from the proximal end side of the reference pin 3, and is characterized in that a plurality of guide holes 12, each of which is opened toward the tip position 3a of the reference pin 3 to guide the boring instrument 2, are formed in the arm 4 in a radial pattern centered at the tip position 3a of the reference pin 3. It is possible to provide a boring instrument guiding device which is capable of more easily and precisely guiding the boring instrument.

The invention relates to a personalized lumber internal fixation auxiliary device and a manufacturing method thereof. The personalized lumber internal fixation auxiliary device comprises two guide holes, two sleeve pipes and a connector, wherein the sleeve pipes are positioned in the guide holes, and the connector is connected with the guide holes on two sides. The manufacturing method comprises the following steps of: firstly, acquiring lumbar three-dimensional parameters through CT (computed tomography) scanning; secondly, designing a guide plate containing positioning guide holes for vertebral pedicles on two sides of a single vertebral body on a three-dimensionally reconstructed lumbar digital anatomical model; and finally, producing a template through a laser radiation layer-by-layer solidification forming technology. The personalized lumber internal fixation auxiliary device is used for accurate implantation of pedicle screws.

A hollow, side-hole, directional infusion vertebral pedicle screw system for orthopedic internal fixation is composed of three parts of a hollow vertebral pedicle screw, a nut and a directional injection screw core. The hollow screw is divided into a front screw and a back screw on the structure, which can be connected with a corresponding plate and a rod system; a side hole is respectively arranged in the three different planes of the front part of the front screw which are mutually arranged at the directions of 120 degrees and are perpendicular to a longitudinal shaft, the junction part (that is, a screw cap of the front screw) of the front screw and the back screw is provided with three corresponding point markers for real-time instructing the directions of the side holes of the front screw, the vertebral pedicle screw can inject bone cement and other vertebral strengthening materials into the front end or to the different directions of the outside after being screwed, and all the holes have directional functions. The directional injection screw core can be a series according to the different parameters of the directions of the side holes, which is also divided into a front end guide core and a back end positioning stalk on the structure. The hollow screw core which is provided with side holes is inserted to a back side hole to be inosculated with the side holes of the front screw of the vertebral pedicle screw; the inner surface of the back end fixing stalk is an internal thread which can be fixed with a syringe, the outer surface is an external hexagon to be corresponding to an internal hexagon of the back screw of the pedicle screw, when in injection after the positioning, only the side hole on the certain specific direction is unblocked, so as to achieve the purpose of directional infusion of the vertebral strengthening materials.

The invention discloses a special apparatus for correcting scoliosis deformity in a growth period, which consists of a growth regulation bar, a sliding vertebral pedicle bolt and a common vertebral pedicle bolt. The special apparatus has the function of automatically sliding to the far end along with the growth of a vertebral column, does not affect the longitudinal growth of the vertebral column, prevents a sick child from suffering from pain of repeated regulation operation, and further improves the curative effect of surgical posterior correction of the scoliosis in the growth period.

The invention discloses a device for operating vertebroplasty through a unilateral vertebral pedicle. The device for operating the vertebroplasty through the unilateral vertebral pedicle comprises a guide sleeve which can steer, a universal micro drill and a bone cement injection channel which can steer. The device for operating the vertebroplasty through the unilateral vertebral pedicle has the advantages that operation and mastering are simple, and acceptability among doctors is good; the portion of saccule opening and the portion of bone cement injection are made to be arranged on the front two thirds of the central portion of the centrum, and therefore the ill vertebral is supported firmly and stably; compared with the prior art, the injection portion of the bone cement is closer to the center of the centrum but is far away from the edge of the centrum, and therefore the probability of leakage of the bone cement is reduced. Meanwhile, due to unilateral puncture, the risk that the puncturing channel enters the vertebral canal is reduced, and the risk of the leakage of the bone cement from the vertebral canal is reduced; the entering path of operation is changed from two sides to one side, the time of the operation is obviously shortened, injure to a patient is reduced and radial exposure of the patient and medical staff can be obviously reduced; the injection point of the bone cement in bones is expanded from one point to multiple points so that the bone cement is enabled to disperse more evenly in sclerotin; the using range is wide and completely identical to that of an existing vertebraoplasty technology.