Device for determining the level of a closed injection clamps in the roots of the pedicles of the vertebra
(57) Abstract:Usage: the invention relates to medicine, namely to devices used in vertebrology, in particular, is intended to determine the safe area of the closed injection into the body of the vertebra of securing device for transosseous osteosynthesis. The inventive device includes a frame made of poles set against each other and provided with bearing elements, which are guides. One pair of rails has the ability to move, and another pair of the guides move spiegelzaal with spacetime at last secured the ends of the spokes. 1 Il. The invention relates to medicine, namely to devices used in vertebrology, in particular, is intended to determine the safe area of the closed injection into the vertebral body retainer device for transosseous osteosynthesis.A device for determining the displacement of bone fragments, comprising a transparent plate, is correlated with the ability to move through the base, provided with angular and coordinate scales, plates when equipped with this risk .The known device for determining the value of the mobility at the interface of bone fragments containing the transmission mechanism, designed in a way that allows the ends of the spokes to move in three dimensions simultaneously, and by using devices rigidly attached to the device for external fixation .However, the known devices are intended for use in determining the magnitude of the displacement, angular deformation or determining the value of the mobility at the junction fragments of the long bones. Their designs are not intended to perform the methods of introduction of waypoints in the body of the vertebra.The objective of the invention is to design and create such a device, with which the private access and under x-ray control it is possible to determine the location of the roots of the pedicles of the vertebra and enter them in the clamps with the subsequent fastening of the latter in the supports external apparatus for mapping injured vertebrae.The problem is solved in that the device for determining the level of a closed injection clamps in the roots of the pedicles of the vertebra, the content is Ruga, interconnected by means of connecting elements, supports, which are load-bearing elements, with openings in the last fixed rails, made in the form of threaded rods installed with the possibility of moving coil elements, one end of which is provided with spiegelgasse with spacetime with fixed ends of the spokes, in addition, at the ends of the bearing elements mounted guides with spiegelgasse having the ability to move in spacetime, in which the fixed ends of the spokes.The drawing shows a device for determining the level of a closed injection clamps in the roots of the pedicles of the vertebra, General view, axonometric view
Device for determining the level of a closed injection clamps in the body of the vertebra according to the invention contains two supports 1, set against each other and interconnected by connecting elements 2. The supports 1 are parallel to each other and in connection with elements 2 form a frame. On each of the supports 1 fixed bearing elements 3, 4, provided with holes through which each of the bearing members 3 and 4 by means of connecting elements 5, 6 and fastening elements 7, 8, 9 soedinenii move through each of the guides through the elements 12, 13, 14 and 15. At the free end of each of the screw elements 11 attached one end of spiegelzaal 16, 18, 17 and 19 by means of fixing elements 20, 21. Each of spiegelzaal 16, 17, 18 and 19 is made in the form of a rod, one end of which is threaded and a groove for fixing the end of the spokes 22 in each of spectation 23, 24.In addition, each of the supports 1 and each of the supporting elements 3, 4 is equipped with guide rails 25 and 26, mounted on the ends of the bearing elements, and the guides 27 and 28, in this example, mounted on the supports 1. The guides 25, 26, 27 and 28 are mounted console with the possibility of longitudinal movement through the elements 29, 30, 31 and 32, while the free ends of each rail 25, 26, 27 and 28 provided with plosinami for fixing spiegelzaal 33, 34, 35 and 36. In each of spiegelzaal fixed end of each of the spokes 37 and 38 in spacetime 39 and 40.Device for determining the level of a closed injection clamps in the roots of the pedicles of the vertebra, made according to the invention, operates as follows.On the operating table at the level of injury, for example, the lumbar spine of the patient, establish the proposed device, the elements of which is located over the skin of the spokes 22, 22a. The screw elements 11, which are fixed spiegelzaal 16 and 18, 17 and 19, is moved along the guide rails 10 by means of the elements 12 and 13, 14 and 15, while the spokes 22, 22a have in parallel to each other and each of them above their roots arches of the vertebrae, and the spokes 37, 38 have in parallel to each other, the right and left of the spinous processes, securing their ends in the respective spacetime 39, 40, the last fix in specularities 33, 33a, which are mounted in guides 25, 26, connecting with the ability to move with the bearing elements 3, 4.Setting the spokes 22 and 22a, 37 and 38 above the lumbar vertebrae, doing x-ray, which is considered as the ratio of one to one between the x-ray image and vertebrae. The coincidence of the spokes 22 and 22a with the middle of the root arcs, and spokes 37 and 38 with their inner edges define the location of the root arcs of the vertebrae for insertion of latches (self-tapping screws) in the roots of the arcs.If the spokes 22 and 22a located above the skin, was out of the roots of the arcs, which is determined by the x-ray image, begin to move along the guide rails 10 each of the screw elements 11, winding and unwinding the elements 12 and 13, 14 and 15, while the>/P>If the spokes 38 and 37 does not match in position with the inner edge of the arc that takes place indirectly, through the elements 29 and 31, the movement of the guides 25 and 26 and respectively moving spiegelzaal 33 and 33a with spacetime 39 and 40.Control the location of the spokes 22 and 37 carry on radiographs. The coincidence of the spokes 22 and 22a with the projections of the roots of the arcs, and spokes 37 and 38 with the inner edges of the arcs allows the skin incision (1-1 .5 cm) in the appropriate field and enter the lock (thread screws) in the body of the vertebrae.The proposed device can determine the roots of the arms on one vertebra to the introduction of tabs, in this case will be used spokes 22 or 22a and 37, 38.The proposed device allows to determine the projection of the root arcs of one or more vertebrae on the skin. This makes it possible to avoid extensive skeletization vertebrae, and therefore, excessive bleeding and to preserve the skin of the patient. The proposed device longitudinal spokes protect the spinal canal and its contents from damage to their retainers. Positioning the needles up and down from the root surfaces of the arms, we are thereby protected from damage roots and spinal is complex parts. Easy to learn to use and enables you to accurately determine the orientation of the roots of the arches of the vertebrae on the skin.The device does not interfere with the conduct of radiographs in the lateral projection. Device for determining the level of a closed injection clamps in the roots of the pedicles of the vertebra containing frame installed with the possibility of moving spokes, characterized in that the frame is made of set against each other, interconnected by connecting elements supports, on which is mounted the bearing elements, with openings in the last fixed rails, made in the form of threaded rods installed with vozmozhnostyu moving coil elements, one end of which is provided with spiegelgasse with spacetime with fixed ends of the spokes, in addition, at the ends of the bearing elements mounted guides with spiegelgasse having the ability to move, in spacetime are similarly secured to the ends of the spokes.
FIELD: medical engineering.
SUBSTANCE: device has two elastic plates and unit for fastening the plates to vertebral arches by means of two hooks placed under the arches on both sides of spinous process, two pins attached to corresponding hook with threaded connection and thrown over the hook with support given by its thrust journal for fastening arches in corresponding hook. The pins have restricting rest means. Connection strap is manufactured as a whole with elastic plate holders building U-shaped clamp having locking protrusions at pedicle ends turned inward. Plate holders are formed by clamp pedicles and locking protrusions. Elongated slot is available in clamp crossbar. The clamp is put over the pins via the elongated slot of the crossbar thrusting against restricting rest means of pins and connected to the pins by means of two nuts screwed over the corresponding pin from the external clamp side. Catching cells are produced in thrust journal of each hook for making additional fixation of the pins.
EFFECT: increased rigidity; fixation stability; accelerated operation process; reduced risk of traumatic complications.
2 cl, 3 dwg
FIELD: medicine; medical engineering.
SUBSTANCE: device is rectangular and has four or more slits for fixing means to pass through each of them. Two slits have exit to lateral side of plate to enable one to set the plate at required position and fix it without preliminarily removing the instrument for correcting orientation relative to vertebral column. Lateral plate surface runs from edge pointing the same direction with longitudinal plate direction. The latter exactly coincides with the vertebral column direction. The system comprises several vertebral column osteosynthesis plates to keep orientation correction relative to the vertebral column unchanged. Correction is carried out by means of the instrument for correcting orientation.
EFFECT: less number of holes to be drilled for mounting the device.
11 cl, 10 dwg
FIELD: medical engineering.
SUBSTANCE: device has plates having longitudinal segmentally counterbored slots and fastening members manufactured as bone screws with clamps. The clamps are manufactured as cramps having threaded openings in lower shelf. Locking members are mounted in threaded openings of the clamps. The locking members have threaded heads, hexagonal slot and smooth conic part set in hexagonal bone screw head slots. The bone screws are set in longitudinal segmentally counterbored slots of the plates. Their narrow parts under the heads pass through slits in the lower shelves of the clamps. The plates are connected to each other with cross-bar manufactured as rod ending with hook on one end which upper shelf has threaded hole for receiving locking member having threaded head, hexagonal slot and smooth thrusting part for fixing the cross-bar to a plate, the other free cross-bar end having corrugated part, has cross-bar clamp manufactured as cramps having threaded opening in upper shelf for receiving locking member having threaded head, hexagonal slot and smooth thrusting part supported by corrugated surface of the cross-bar to fix the cross-bar to the second plate. A hole is available in the upright connecting crossbar clamp shelves. The corrugated free crossbar end is movable and fixable in the hole.
EFFECT: enhanced effectiveness of treatment; reduced risk of traumatic complications; avoided blood deposit under plates.
FIELD: medical engineering.
SUBSTANCE: device has supporting frame and threaded rods mounted thereon to enable their transpedicular introduction into displaced vertebra body to take place with triangular structure being formed which apex is directed towards vertebral body. The supporting frame has screws introduced in transpedicular way into vertebral bodies adjacent to the displaced one, and connective bars building rigid structure by means of crossbars. The device has additional removable reposition frame resting upon the connective bars and joined to the threaded rods by means of transverse beam serving as triangular rigid structure base movable relative to the supporting frame. The screws and threaded rods have two threaded parts separated with spherical head, one of which is used for being introduced into bone tissue, and the other one is used for making connection to the connective bars. The connection is made as detachable floating fixing members having concave spherical surface for receiving rod and screw heads with variable connection angle. The detachable floating fixing members of the threaded rods have slots for receiving fingers connecting the threaded rods to the supporting frame allowing variable connection distances from the connective bars.
EFFECT: enhanced effectiveness of treatment.
FIELD: medicine; medical engineering.
SUBSTANCE: device has at least one connection member shaped as rod, at least two fixing means each fixable on vertebra body. The means have fork-shaped head parts which two branches determine U-shaped receiving space for the connection member to fit into it. Head is, as a rule, saddle-shaped, has locking screw for screwing-in into receiving space for fixing the connection member between two fork-shaped head branches. The head is guiding member for independent locking piece usable for carrying out fixation on the head after having set connection member into head fork. The locking piece is usually U-shaped, its branches being engageable with fork-shaped head part branches and its bottom part having opening with internal thread engageable with the locking screw. The guiding member available on the head part is formed with arc-shaped flanges available on lateral external surfaces of fork-shaped area. Fixing member has fork head, two branches of which determine receiving space of strictly U-shaped form for receiving connection member. Head is, as a rule, saddle-shaped. It serves as guiding member for independent locking piece usable for carrying out fixation on the head after having set connection member into head fork. The locking piece is usually U-shaped, its branches being engageable with fork-shaped head part branches and its bottom part having opening with internal thread engageable with the blocking screw. The guiding means available on the head part is formed with arc-shaped flanges available on lateral external surfaces of fork-shaped area. Auxiliary member has two end pieces positionable in slots available on implant head part and a means for applying force to the rod for causing lateral or vertical displacement to allow rod to be positionable in the slot.
EFFECT: retained correction degree and final fixation and tightening of screws selected by surgeon during operation.
12 cl, 4 dwg
FIELD: medical engineering.
SUBSTANCE: device has ball and socket joint casings having cylindrical and supporting parts, transpedicular screws having spherical heads, axial rods and transverse tie rods. Lower unseparable lips are available on external surfaces of supporting parts of ball-and-socket joints. The upper lips are separable and they are mounted on cylindrical parts of the casings. Cylindrical grooves which radii are equal to the axial rod radii are available on opposite surfaces of the upper separable and lower unseparable lips of the ball-and-socket joints. External thread is available in cylindrical parts of the casings with fastening nuts mounted thereon for fixing the separable lips. Locking members controlling angular displacements of spherical heads along transpedicular screw axes are manufactured as fixing screws having ring-shaped cutting edge on contact side to enable one to introduce them into internal threaded openings of the cylindrical parts. The axial rods are manufactured as pivot levers having rod part on one end and bushings on the other end arranged in perpendicular to each other. Locking member for controlling bushings rotation of pivot levers relative to each other is manufactured as radial teeth on plug plane and locking screws for positioning in bushing holes.
EFFECT: rigid fixation of injured vertebral column segment; small-sized fixing members; reduced risk of traumatic complications.
FIELD: medicine; neurosurgery; traumatic surgery.
SUBSTANCE: holder can be used for stabilization of damaged sectors of spinal column. Holder has transpedicular screws, longitudinal and lateral beams, fixing unit with two mutually perpendicular holes for screws and longitudinal beam. Longitudinal beams are made of shape-memory-effect material, which provides flexural rigidity of holder within 10 to 80 H/mm.
EFFECT: reduced risk of post-operational complications; stabilized traumatized segment of spinal column.
5 cl, 1 dwg
FIELD: medicine, in particular, equipment used in traumatology and orthopedics.
SUBSTANCE: apparatus has connection member 5, sealing cap 12, tightening means 13, locking means 21 for fixation, fixation means 35 used for securing of screw head 30 of bone fixation means in cavity 8 of connection member 5. Connection member 5 is positioned coaxially relative to central axis 2 and has upper end 6, lower end 7, cavity 8 arranged coaxially relative to central axis 2 extending through connection member 5 from its upper end 6 to its lower end 7, said cavity converging to its lower end 7 formed as at least one flange 9, and channel 10 extending through connection member 5 transverse to longitudinal axis 2 for receiving of longitudinal holder 11. Sealing cap 12 has front end 20, rear end 19, second cavity 18 open at its front end 20 for locating therein of connection member 5, and second channel 17 extending transverse to central axis 2 and opening toward front end 20 of sealing cap 12. Tightening means 13 may be fixed at rear end 19 of sealing cap 12 for retaining of longitudinal holder 11 located in channel 10 in connection member 5. Locking means 21 are positioned outside connection member 5 and in second cavity 18 of sealing cap 12 so as to mate each other and serve for fixation of sealing cap 12 on connection member 5.
EFFECT: increased efficiency owing to reduced space for implantation which is due to the possibility of introducing surgical instrument having diameter smaller than that of implant for preventing surrounding tissues from injury.
7 cl, 6 dwg
FIELD: medicine, traumatology, orthopedics.
SUBSTANCE: the present innovation deals with fixing affected segment in thoracic, lumbar and sacral vertebral departments. One should apply supporting elements of transpedicular system of bars which should be crossed in frontal plane and connected together with a fixing knot to regulate the angle of bars' crossing depending upon the requirements appeared, moreover, supporting elements should be applied through pedicles of vertebral arches that increases reliability of fixation at achieving osseous ankylosis.
EFFECT: higher efficiency.
2 dwg, 1 ex
FIELD: medicine; traumatic surgery; orthopedic devices.
SUBSTANCE: device for applying lengthening or stretching force to patient's body has aid for fastening first and second components to bones or to adjacent bones. Mentioned components are connected by increasing-length connecting aid. Device also has magnet connected with connecting aid and drive unit disposed outside patient's body for generating moving or changing electromagnetic field which results in rotation of magnet and elongation of connecting aid. Connecting aid has screw and nut. Magnet is connected with screw and nut by means of transmission box to generate relative rotation for elongating the device. Endoprosthesis replacement device to be elongated has first and second components that are connected by increasing-length unit. The first component has fraction of extremity joint. The second component has aid for fastening to resected long bone, magnet connected with connecting unit, and aid adjusted for disposition outside patient's body for generation of moving electromagnetic field which results in rotation of magnet and elongation of connecting unit. Magnet is connected with connecting unit by means of reduction gear. Device for correcting curvature of the spine has first and second shafts for elongation. Any shaft has its end to be connected with aid for fastening to corresponding vertebra. Connecting unit is adjusted in such a way that ends provided with fastening means were relatively movable. Mentioned connecting unit is connected with drive mechanism, which has rotated magnet, reduction gear, and drive aid for disposition outside patient's body. Generated moving or changing electric/magnetic field induces rotation of magnet and motion of fastening aid, disposed onto one shaft, relatively fastening aid, disposed at the other shaft.
EFFECT: elongation of bones or implants without surgical operation.
15 cl, 5 dwg