Device for the surgical correction and fixation of the spine
(57) Abstract:Usage: the invention relates to medicine, namely to traumatology and orthopedics, and is intended for the surgical treatment of patients with injuries and diseases of the spine. The invention solves the problem of providing a reliable and simple stabilization of the damaged spine in the corrected position. The inventive device for the surgical correction and fixation of the spine contains elements for attachment to bone structures, made in the form of hooks with hooks and fixed on them tightening elements, the elastic elements are in the form of threads with loops at the ends of interacting with the gripper hooks, this thread is repeatedly wrapped around the grips. 2 Il. The invention relates to medicine, namely to traumatology and orthopedics, and is intended for the surgical treatment of patients with injuries and diseases of the spine, such as a compression fracture of the vertebral bodies, disease Chairman Mau, disease Guntra, kyphoscoliosis, when you need a hard contraction of the back bone structures damaged spine, i.e. to prevent it from bending.the STI in the form of plates with screws through the head of the metal wire, to the elements of tension and fixation of the cable 
The complexity of the design with the large number of parts makes the procedure as when installing and removing it long and traumatic, with possible complications in the form of paresis and paralysis.It is also known a device for the surgical correction and fixation of the spine, containing the elements of the attachment to bone structures, made in the form of hooks with latches, and fixed on them tightening elements in the form of compression springs.The elasticity of the spring does not guarantee rigid stabilization of the damaged spine.The objective of the invention to stabilize the damaged finish of the spine in the corrected position.The problem is solved in that the device for the surgical correction and fixation of the spine, containing the elements of the attachment to bone structures, made in the form of hooks with hooks and fixed on them tightening elements, the elastic elements are in the form of threads with loops at the ends of interacting with the gripper hooks, this thread is repeatedly wrapped around zahvatuvaet hard to stabilize a damaged spine in the corrected position adequate tension of the yarn, this bending of the spine becomes impossible due to derestimate repeatedly twisted yarn, and is necessary for spinal certain degree of extension due to the possibility of weakening the threads.By pulling the free end of the thread, repeatedly wrapped around the grips hooks, efforts tightening skyrocket on the principle of variable geometry mechanism. When this occurs, the correction of spinal deformity. The device can be applied in different sets. When kyphoscoliosis use 2 hook installed with the concave side of the spine on the transitional vertebrae of the arc of curvature, when the fracture of the vertebral body 4 hook, mounted in pairs on one or two vertebrae above and below the adjacent damaged.In Fig.1 shows a General view of the device for the correction of a deviated vertebra with two hooks; Fig.2 installing the device on the spine of the fractured vertebral body with 4 hooks.Device for the surgical correction and fixation of the spine (Fig. 1) contains elements for fastening to a bone in the form of hooks 1 and 2 hooks 3. The thread 4 is repeatedly wrapped around the grips 3 and fixed on them available at its ends by hinges 5 and 6. When Perello 8. Thread 4 can be made of nylon, Dacron, silk and other materials permitted for internal use in medical practice.The device is used as follows:
In the treatment of patients with fracture of the vertebral body, when there is a kyphotic deformity of the spine incision of soft tissue, exposing the bony structure of the vertebra. The fastening elements in the form of hooks 1, 2, 7 and 8 is slid under the rear of the supporting bone formation vertebrae (arc vertebrae, joint or transverse processes). Then loop 5 thread 4 wear on the grip 3 of the hook 1. The free end of the thread 4 loop 6 is conducted to capture the 3 hook 2, encircle it, and so consistently and repeatedly twist the hooks 3 hooks 1, 2, then hooks 7 and 8. Pulling free loop 6 thread 4, produce the contraction of the posterior bony structures of the spine, thereby corregira its deformation. Free loop 6 thread 4 after achieving the necessary correction of spinal deformity is fixed on one of the next grippers 3. As the thread 4 repeatedly wraps around the grips 3, efforts tightening skyrocket (the principle of variable geometry mechanism) that allows adequate correction of deformity of spine. The wound is sutured in layers. When re-hasretim soft tissues reveal a mounting for one of the loops 5 or 6 threads 4, remove it from the grip of the hook and carried out by extrusion with subsequent formation of a new loop on the end of the thread and mount it on the grip. The wound is sewn together in layers.The application of this device can be used in kyphotic deformities of the spine as traumatic origin and consequences of various diseases (osteochondropathy of the vertebral bodies, kyphoscoliosis), simple Assembly and disassembly his spine with the possibility of noninvasive additional correction and achieve adequate correction and fixation of the spine in flexion, keeping his movements on the extension.Example. Patient C. 9 L. (East.disease N 1474), entered the Institute with a diagnosis of posttraumatic kyphotic deformity of the spine with the top on Th. The angle of the kyphotic curvature of the 43o.Was performed the surgery with the use of this device. Incision of soft tissues revealed with ThVIIIfor LIIthe back bone structure of the vertebrae. On arc ThIXand LIIright and left set the hooks. Loop yarn documented the capture hook ThIXon the right side. The free end of the thread with a loop check is>right and so consistently repeatedly (three times) all the hooks hooks. By stretching free loops made the necessary correction of spinal deformity. Free loop fixed on the grip of the hook mounted on the LIIon the left side. The wound in layers left the house taking.Immobilization crib from., after 1 month made corset from polyamide resins.The angle of kyphosis reduced on 22o(50% of the initial deformation). The operating loss of correction in rangecontrol 10 months after surgery was not detected.The application of this device allows you to simply carry out the installation and dismantling of his conduct noninvasive additional adjustments, it is easy to achieve adequate tightening effort and reliable fixation of the spine in flexion while maintaining its movements are in evidence, prevent the occurrence of postoperative hematomas.Sources of information:
1. US patent N 4041939, F 61 B 17/70, 1977.2. Foley, M. Calonoff L. Hendrix R. M. Schafer Thoracic and lumbar spine fusion: postoperative radiologic evaluation // AJR 141. 1983. P. 376. Device for the surgical correction and fixation of the spine, containing the elements of the attachment to bone structures, made in the form cranny in the form of threads with loops at the ends, interacting with the gripper hooks, this thread is repeatedly wrapped around the grips.
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