Apparatus for connecting longitudinal holder to bone fixation device

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

 

The technical field to which the invention relates.

The present invention relates to a device intended for connection of the holder with the longitudinal means of bone fixation, in particular screw for legs arc vertebra.

The level of technology

In the art known for some devices intended for connection screws for the legs arc vertebra with longitudinal holders for fixing the vertebral column.

Such a connecting device is described in us patent # US 5584834 company ERRICO. It is a well known invention provides a device that allows a simple way of connecting screw for legs arc vertebra, or in a broader sense, an element fixed on the bone, with a longitudinal holder. The connecting device, in General, consists of a cylindrical Central body which is the lower end includes a collet clamping device with a groove having outside conical shape and a spherical cavity to be installed in her spherical head element, connected with the bone, and at its upper end cut external threads. In the Central section of this Central body has a hole extending laterally and perpendicular to the Central axis, designed for longitudinal installation of the holder. The lower tubular element internal to the mustache, the corresponding cone of the Central block, and the upper tubular element with a channel extending in the direction of the lower tubular element, put on this Central case. Assembled both tubular element can be pressed downwards by means of a nut which can be screwed on the external thread of the Central building. Longitudinal holder set between the upper and lower tubular elements so that it passes laterally through the channel of the upper tubular element. When the connecting device is locked, the upper tubular element is pressed down when tightening this nut which presses the longitudinal holder mounted within the channel, the lower tubular element, the inner cone in which the result is pushed on top of the outer cone collet clamping device. When the cones, thus, are pressed to each other, collet clamping device is compressed and as a result, the spherical head, sandwiched inside collet clamping device is blocked. The disadvantage of these devices of the prior art consists, on the one hand, substantial weight design of the connecting element due to the use of socket connections between the spherical head and an element connected with the bone, and collet retainer clip, and, on the other hand, the need to provide a place for surgical instrument used for tightening nuts screwed on the external thread of the Central block.

Disclosure of inventions

The present invention aims to remedy these deficiencies. The present invention is based on solving the task of creating a device that requires the smallest space and which, moreover, can be implanted with minimal requirements for surgical instruments and operations. In particular, it should allow you to enter a surgical instrument with a diameter greater than the diameter of the implant to ensure the least damage to the surrounding tissue.

The present invention can solve the task using a device designed for the longitudinal connection of the holder with a means of bone fixation, in particular, the screws for the legs arc vertebra having characteristics under paragraph 1 of the claims.

In accordance with the present invention a device for the longitudinal connection of the holder with a means of bone fixation, in particular with screw for legs arc vertebra contains:

- a connecting element mounted coaxially relative to the Central axis, an upper end, a lower end, a cavity is made coaxial with respect to the Central axis passing through soedinitelny element from the upper end to the lower end, which is made tapering toward its lower end in the form of at least one flange, and a channel passing through the connecting element transversely to the longitudinal axis to the longitudinal holder;

- sealing cap containing the front end, a rear end, the second cavity opening on the front end to install it the coupling element, and a second channel passing transversely relative to the Central axis and opening toward the front end of the sealing cap; and

- tightening tool, which can be fixed on the sealing cap on the back end and through which the longitudinal holder mounted in the channel, can be fixed in the connecting element, whereby the outside from the connection element and the second cavity of the sealing cap installed snap-fixing means located so that they complement each other and serve for fixing the sealing cap on the connecting element;

- the device comprises a fixation device through which the head of the screw means of fixation of the bone is fixed in the cavity.

Preferably fixation means are located in the plane of the cross section orthogonal to the Central axis of the outer contour of soedinitelnoj element and on the surface of the second cavity of the sealing cap.

In addition, the fixation means may contain the tabs on the outside of the connecting element, and a complementary recess in the second cavity of the sealing cap.

It is advisable that the flange contained bearing surface in the form of a circular ring located concentrically with respect to the Central axis.

Preferably the sealing cap contains two slots located orthogonal with respect to the second channel, which pass through the wall of the sealing cap from the direction of the front end.

In another embodiment, the device contains a means of bone fixation with a Central axis, a front segment and the adjacent along the axis of the rear segment, in which the rear segment has a cylindrical shape or the shape of a prism and the front segment is used for fixation to the bone and in which the rear segment of the means of fixation of the bone is fixed with flange coaxially in the direction to the rear end of the coupling element, while the anterior segment of the means of fixation of the bone is along the axis from the rear end of the coupling element.

The fixation device to the bone may be a screw for the leg of the arc of the vertebra screw rod containing external threads and a screw head at its end.

The advantages obtained with the aid of this image is to be placed, essentially, consist in the fact that the use of the device in accordance with the present invention:

- can be endowed with a very light weight design of the connecting element with the sealing cap;

- the device can be locked during implant surgery using a single locking mechanism; and

- you can use tools that have a diameter less than the diameter of the implant, which means that there is no need to use a large space for access, which traumatizes the patient and the device, respectively, is ideally suitable for use in surgery with minimal intervention or navigation surgery. Such implants also provide the opportunity to treat patients in cases horoscopical access.

In one embodiment of the device in accordance with the present invention includes a tool attachment, through which the narrow cavity of the connecting element between the rear end of the head bone and the upper end of the coupling element. This prevents the loss of means of bone fixation of the coupling element at its upper end.

Design means mounting in accordance with this alternative implementation provides the advantage consisting in the fact that they use tentative is collected but the implants, that means that there is no loss of time during the operation and significantly reduces the risk of, for example, improper installation of parts or improper injection.

Brief description of drawings

The present invention and subsequent development of the present invention are described in more detail below on the basis of schematic illustrations of several variants of its implementation.

Figure 1 shows a view in longitudinal section of the preferred options for performing device in accordance with the present invention;

on figa shows the connecting element according to the variant execution device in accordance with the present invention, depicted in figure 1;

on fig.2b shows the options for performing device in accordance with the present invention, represented in figure 1;

figure 3 shows a view in section of another variant of implementation of the present device in accordance with the present invention;

figure 4 shows the options for performing device in accordance with the present invention, presented in Fig 3;

figure 5 shows a view in section of another version of the execution device in accordance with the present invention; and

figure 6 shows a view in section of another version of the execution device in accordance with the present invention.

The implementation of the invention

Figure 1 ol is dostavleno tool 1 bone fixation designed in the form of a screw for legs arc vertebra, together with the connecting element 5, a longitudinal holder 11, the sealing cap 12, which is shown mounted coaxially on top of the coupling element 5 at the upper end 6, and a means (13) of torque, connected to the sealing cap 12. Front segment 3 tools 1 bone fixation made in the form of a screw rod 24 with the external thread 26, while the rear segment 4 is performed as the head 30 of the screw in the form of a circular cylinder. Tool 1 bone fixation is designed as a screw for legs arc vertebra, can be screwed into the leg with an external thread 26 on the screw rod 24, in which the screwdriver (not shown) can be inserted into the tool 29, shown as a hexagonal socket for installation screwdriver, which is located at the limit position on the head 30 of the screw. Instead of the construction in the form of a hexagon socket means 29 for setting the screwdriver can also be made in the form, for example, hex socket, socket Torx or Phillips.

The connecting element 5 consists of a hollow housing, a coaxial Central axis 2, with the upper end 6 and the lower end 7. The diameter of the cavity 8 of the connecting element 5 decreases toward the lower end 7, which is formed by the flange 9 with the supporting surface 25, which can be installed is Lena head 30 of the screw, tools 1 bone fixation. Screw the rod means 24 1 bone fixation may be passed through the cavity 8, tapering towards the lower end 7 of the connecting element 5. Through the connecting element 5, in addition, passes vertically with respect to the Central axis 2 of the first channel 10, in which the first channel 10 is opened from the upper end 6 of the connecting element 5. The depth of the channel 10, as measured from the upper end 6 of the connecting element 5 parallel to the Central axis 2, are set so that the longitudinal holder 11, is introduced into the channel 10 may be installed in the limit position of the head 30 of the screw means 1 bone fixation. The sealing cap 12 is put on the connecting element 5, so that the front end 20 of the sealing cap 12 is directed to the lower end 7 of the connecting element 5 and the connecting element 5 is partially installed inside of him, parallel to the Central axis 2, the second cavity 18 formed in the sealing cap 12. The second channel 17, passing through the sealing cap 12, a vertically relative to the Central axis 2, allows you to set the longitudinal holder 11, located in the connecting element 5, the first channel 10, the inside of the sealing cap 12. The second channel 17 extends from the front end 20 of the sealing cap 12, making uplatne the nutrient cap 12 may be mounted on the connecting element 5, parallel to the Central axis 2, when the longitudinal holder 11 is installed in the connecting element 5.

Along the Central axis 2 of the tool 21 of the fixation is made in the form of protrusions 15 formed on the outer side of the coupling element 5 and the complementary grooves 16 located on the surface of the second cavity 18 of the sealing cap 12. The tool 21 of the fixing can be installed on two axial levels, which means that the various provisions of the place. The first position latching preferably used for changing the position of the fixed bones or fragments of bone, while the second or other position lock is used to lock the device.

The protrusions 15 and the recess 16 is made with a profile in the form of saw teeth in cross section parallel to the Central axis 2, in which the beveled flanges of the protrusions 15 are oriented in the direction of the lower end 7 of the connecting element 5 and the beveled flanges of the grooves 16 is oriented in the direction of the rear end 19 of the sealing cap 12. When the sealing cap 12 mounted on the connecting element 5 parallel to the Central axis 2, the two segments 27, 28 (fig.2b) of the sealing cap 12 formed by the second channel 17 elastically apart in the transverse direction of the Central axis 2, resulting in the sealing cap 12 mo is but to put on top of the protrusions 15 on the connecting element 5 until while the notches 16 in the second cavity 18 will not cover the protrusions 15, and two segments 27, 28 (fig.2b) of the sealing cap 12 is resiliently snaps into place in the direction of the Central axis 2.

The tool 13 tightening is made in the form of a clamping screw which can be screwed into the internal thread hole 31 on the rear end 19 of the sealing cap 12, passing coaxially to the Central axis 2.

Figure 2 shows the connecting element 5 in the form with the upper end 6. The cavity 8 and the locking means 21 are concentric with the Central axis 2 (figure 1), in which the locking means 21 is configured in the form of projections 15, which when considered in a direction parallel to the Central axis 2, are located on the outer contour of the connecting means 5. The annular side wall of the connecting element 5 and the protrusions 15 are interrupted by channel 10, in which the axis 14 of the channel is vertically relative to the Central axis 2 (figure 1).

Longitudinal holder 11 is installed in the channel 10. In addition, the channel 10 of the connecting element 5 forms two walls 22, 23 at the site of its length, and the protrusions 15 are formed only on these two walls 22, 23 and does not surround the whole of the connecting element 5.

On fig.2b shows the sealing cap 12 mounted on the connecting element 5, and the tool 13 tightening. The second channel 17 passes through Oplotnica the NYY cap 12 at the site of its length vertically with respect to the Central axis 2 (figure 1), resulting in the sealing cap 12 are formed two segments 27, 28, which elastically expands in the radial direction, when the sealing cap 12 is put on the connecting element 5, which allows you to wear the sealing cap 12 on top of the projections 15 (Fig 1). When the sealing cap 12 is sufficiently worn on the connecting element 5 so that the notches 16 (figure 1) can connect to the projections 15 (Fig 1), two segments 27, 28 elastically compressed ago, i.e. in the direction of the Central axis 2 (figure 1).

Embodiment of a device in accordance with the present invention, is shown in figure 3 and figure 4, differs from the scenarios presented in figure 1 and 2 only in that the sealing cap 12 includes two slots 34, made orthogonal with respect to the second channel 17, which are formed in the wall of the sealing cap 12 from its front end 20. Instead of two segments 27, 28 (fig.2b) sealing cap 12 in this embodiment includes four segments 27, 28, 32, 33. This means that the elasticity of the sealing cap 12 can be increased, and the cap is easier to put on the tabs 15 of the connecting element 5.

For implantation of the device pre-assembled implant containing the tool 1 bone fixation and the connecting element 5, are removed from the of ontainer implant, this screwdriver is already installed in the tool 29 and do not want to use any other tool to hold the parts, in addition, the surgeon should not connect any details. Then the implant, which, if necessary, consists only of funds 1 bone fixation, and the connecting element 5 is screwed into the prepared the foot arch of a vertebra. After installing longitudinal holder 11 in the first channel 10 formed in the connecting element 5, the same screwdriver is used for removing from the container the implant also pre-assembled sealing cap 12, which contains the tool 13 commit, and when this operation is also not required to use a special tool. Using a special clamp the sealing cap 12 is installed in the first point latching, that is, when the first recess 16 of the sealing cap 12 mounted on the first protrusion 15 of the connecting element 5. After re-positioning the sealing cap 12 is installed in the second or third position it clicks and locks. Then use the screwdriver to tighten the tool 13 torque, and thus the longitudinal holder 11 mounted in the first channel 10, is locked in the connecting element 5. After tightening means 13 tightening longitudinal holder 11 is pressed against which the head 30 of the screw, therefore it is clamped between the flange 9 and the longitudinal holder means 11 1 bone fixation together with longitudinal holder 11, which is blocked in the connecting element 5.

Figure 5 shows an embodiment of a device in accordance with the present invention, which differs from the embodiments described above, only the fact that by means of the clamping means 35 prevent the movement of the head 30 of the screw means 1 bone fixation of the cavity 8. The locking means 35 includes a pin 37 which is clamped, for example, in the hole 38 passing transversely of the Central axis 2, in the cavity 8. The hole 38 is located along the axis between the rear end 41 of the head 30 of the screw and the upper end 6 of the connecting element 5. Instead of one hole 38 as a means 35 of the fixing can also be formed with several holes 38, distributed across the width, and use a few pins 37.

Figure 6 shows an embodiment of a device in accordance with the present invention, in which instead of one or more pins 37 use the tool 35 fixation, made in the form of a spring washer 39. Spring washer 39 is installed in the groove 40, formed on the rear end 41 of the head 30 of the screw, and it passes into the cavity 8 so that the cavity 8 is narrowed in this place in relation to its upper end 6. The groove 40. Lorena along the axis so that snap ring 39 mounted in it, does not extend beyond the far end 41 of the head 30 of the screw in the direction of the upper end 6 of the connecting element 5, which means that the longitudinal holder 11 is not limited to the spring ring 39. The head 30 of the screw is made to this effect, for example, with a reduced size at its rear end 41, and on the rear end 41 of the screw head has an axial segment 42, the diameter of which is smaller than the diameter of the head 30 of the screw. The flange 43 formed by this segment 42 with a reduced diameter, and then abuts against the locking means 35, which is made here in the form of a spring ring 39, so that the fixed longitudinal movement of the head 30 of the screw in the direction of the upper end 6 of the connecting element 5 through the use of a spring ring 39 in the cavity 8. The segment 42 of the head 30 of the screw passes through the circular hole of the spring ring 39 beyond the spring ring 39, so that the longitudinal holder 11 can abut the rear end 41 of the head 30 of the screw.

1. A device for connecting a longitudinal holder (11) with the tool (1) fixation of a bone, in particular with screw for legs arc vertebra, containing

A) the connecting element (5)mounted coaxially relative to the Central axis (2), with the upper end (6), lower end (7), the cavity (8), made by coaxial is in relation to the Central axis (2), passing through the connecting element (5) from the upper end (6) to the lower end (7), which is made tapering toward its lower end (7) in the form of at least one flange (9)and (10)passing through the connecting element (5) transversely to the longitudinal axis (2), for the longitudinal holder (11);

B) sealing cap (12), containing the front end (20), rear end (19), a second cavity (18), open at the front end (20), for installation in it of the connecting element (5) and second channel (17), passing transversely relative to the Central axis (2) and opening in the direction to the front end (20) of the sealing cap (12);

C) means (13) of torque, which can be fixed on the sealing cap (12) on its rear end (19) and through which the longitudinal holder (11)installed in the channel (10), can be fixed in the connecting element (5), through which

D) outside of the coupling element (5) and the second cavity (18) of the sealing cap (12) is installed locking means (21) fixation, located so that they complement each other and serve for fixing the sealing cap (12) on the connecting element (5), characterized in that

E) the device comprises means (35) fixation with which g is lovko (30) screw means (1) fixation of the bone is fixed in the cavity (8).

2. The device according to claim 1, characterized in that the means (21) fixation are located in the plane of the cross section orthogonal to the Central axis (2), the outer contour of the connecting element (5) and on the surface of the second cavity (18) of the sealing cap (12).

3. The device according to claim 2, characterized in that the means (21) fixing contain tabs (15), located on the outside of the connecting element (5), and complementary recesses (16) in the second cavity (18) of the sealing cap (12).

4. The device according to claim 1, characterized in that the flange (9) includes a support surface (25) in the form of a circular ring located concentrically with respect to the Central axis (2).

5. The device according to claim 1, characterized in that the sealing cap (12) contains two slots (34)positioned orthogonal with respect to the second channel (17), which pass through the wall of the sealing cap (12) from the direction of the front end (20).

6. The device according to claim 1, characterized in that it contains means (1) fixation of a bone with a Central axis (2), the front segment (3) and attached along the axis of the rear segment (4), in which the posterior segment (4) has a cylindrical shape or the shape of a prism and the front segment (3) is used for fixation to the bone and in which the rear segment (4) tools (1) fixation of the bone is fixed with flange (9) coaxially in the direction of the rear end (7) of the connecting element (5), while the front segment (3) tools (1) bone fixation is along the axis from the rear end (7) of the connecting element (5).

7. The device according to claim 6, characterized in that the tool (1) fixation of the bone is a screw for the leg of the arc of the vertebra screw rod (24)containing the external screw thread (26), and head (30) of the screw (30) at its end.



 

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2 dwg

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.

6 dwg

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

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