JP5043071B2 - Device for articulating two objects - Google Patents

Description

  The present invention relates to a device for articulating two objects according to the preamble of claim 1.

  For example, in the case of various surgical implants such as multi-jointed articular bone plates and osteosynthesis devices in the spinal column region where a longitudinal member oriented generally parallel to the spinal column must be joined by several bone screws The articulated joint must be releasably lockable. For this purpose, an elastic binding element such as a collet chuck is used. Such articulated locking is achieved by expanding the elastic fastening element inside the corresponding fixed hollow chamber. This spreading process of the elastic binding element is mainly achieved by a clamping cone or a clamping wedge.

  An osteosynthesis device is known from WO 94/00066 SCHLAPFER, which has a bone screw fixed in the bone, a longitudinal member and a connecting element that allows the bone screw to be fixed to the longitudinal member. The known fixation device comprises a cone-shaped elastic clamping element having a conical hole and contained between two circles and a bone screw, the bone screw having an outer taper corresponding to the conical hole of the clamping element; And a screw provided on the distal side away from the bone. In order to receive the clamping element, a spherical hollow chamber is provided in the coupling element, and the dimension of the hollow chamber is dimensioned so that the base of the clamping element is swingably receivable therein. ing. The second hole serves to receive the longitudinal member. When the nut that is screwed onto the distal screw of the bone screw and tightened to the tightening element is tightened, the taper portion of the bone screw is drawn into the inner taper portion of the tightening element, thereby expanding the tightening element. Pressed against the wall of the spherical hollow chamber, the coupling element and the bone screw are thus maintained relative to one another.

  With all these taper fastening connections, such a connection is difficult to loosen, which is often possible only by striking a bone screw or connecting element with a scissors or by special instruments.

  In this respect, the present invention is intended to provide a remedy. An object of the present invention is to realize a tightening connection based on a taper mechanism or a wedge mechanism which can be fixed by a screwdriver and can also be released again.

  The present invention solves this problem with an apparatus for articulating two objects having the features of claim 1.

  In an apparatus according to the invention for articulating two objects, the first object comprises a joint shell and has a hollow chamber coaxial to the central axis, and the clamping element has a longitudinal axis and a coaxial hole. The fastening element is configured to be elastically deformable in a complementary manner to the hollow chamber and perpendicular to the longitudinal axis, and at least one fastening element is coaxial with the longitudinal axis and can be introduced into the hole and expands in the axial direction. The clamping element is inflatable and releasably fixable in the hollow chamber by sliding the at least one clamping element in the axial direction in the hole, and the second object is fixed by the at least one clamping element and the clamping element The first object is releasably connectable, and the drive element allows at least one fastening element to slide relative to the hole in the axial direction. The drive element is coupled in a form-fitting manner in the axial direction to the clamping element and at least one fastening element so as to be rotatable about a longitudinal axis.

Modification A:
In a preferred embodiment of the device according to the invention, an axially-fitting engagement between the drive element and the clamping element, rotatable about the longitudinal axis, is complementary to the annular step of the drive element and the clamping element. On the other hand, the axially-fitting engagement between the drive element and the fastening element, which can be rotated about the longitudinal axis, is realized by a threaded joint.

Modification B:
In another embodiment of the device according to the invention, the configuration of the axially-fitting coupling that is rotatable about the longitudinal axis is replaced compared to the preferred embodiment. An axial form-fitting connection between the drive element and the clamping element that is rotatable about the longitudinal axis is realized by a threaded joint, while around the longitudinal axis between the drive element and the fastening element. The rotatable axially shaped mating connection is realized by an annular step formed in the drive element and a complementary annular groove formed in the fastening element.

Modification C:
In another embodiment of the device according to the invention, both axially-fitting couplings that are rotatable about a longitudinal axis, i.e. between the drive element and the clamping element, and between the drive element and the clamping element, Is realized by a threaded joint. Preferably, one of both threaded joints is formed with a left-hand thread and the other of both threaded joints is formed with a right-hand thread. The thread leads of both threaded joints can have the same or different values.

  The advantage of variants A and B is that they are easy to handle, and variant C allows quick release and tightening because of both threaded joints and can be easily manufactured.

  Depending on the application of the device according to the invention, the decisive configuration for the hinge joint scheme of the hollow chamber in the first object and the clamping element can be cylindrical or spherical, preferably spherical trapezoidal. In the case of a cylindrical configuration, the tightening element can only rotate about the central axis of the hollow chamber, whereas when the hollow chamber is formed in a spherical trapezoid between two parallel circles, the tightening element is It can rotate around the central axis and around two other axes perpendicular to it.

  In yet another embodiment of the device according to the invention, the second object is integral with the fastening element. This embodiment is particularly suitable for using the device according to the invention inside a spinal fixation system, in which the second object is preferably realized in the form of a bone screw, the first object being a bone screw This is realized in the form of a coupling element between the steel and the longitudinal member. For this purpose, it is suitable to construct a hinge joint as a ball joint having a spherical trapezoidal hollow chamber between two parallel circles.

  In another embodiment of the device according to the invention, the first object is formed as a bone plate, while the second object forms a connecting element with the other bone plate, thus the two hinged bone plates. A bone anchoring device is formed as a whole. For this purpose, it is suitable to configure the hinge joint having a cylindrical hollow chamber so as to be rotatable only about one axis.

  The device according to the invention can in various embodiments also comprise a plurality of fastening elements that are coaxial with the longitudinal axis by the drive element and are slidable in both directions relative to the hole. In an embodiment with two fastening elements, the clamping element has two elastically deformable longitudinal sections adjacent to its ends, each one fastening element being able to be introduced into the hole from the side.

Other advantageous configurations of the invention are specified in the dependent claims.
The advantage achieved by the present invention is substantially that, because of the device according to the present invention, the clamping connection can also be fixed and re-released without other auxiliary means by a screwdriver on the basis of a conical or wedge mechanism. It is in the fact that.

FIG. 2 is a cross-sectional view of one embodiment of a device according to the present invention for coupling a bone fixation element to another implant. FIG. 7 is a cross-sectional view of another embodiment of a device according to the invention for coupling a bone anchoring element to another implant. FIG. 6 is a cross-sectional view of yet another embodiment of a device according to the invention for coupling a bone anchoring element to another implant. 1 is a perspective view of an embodiment of a device according to the invention for joining two plate-like objects. FIG. 5 is a detailed view of one object of the embodiment shown in FIG. 4 of the device according to the invention. FIG. 6 is a cross-sectional view of another embodiment of the device according to the invention. FIG. 7 is a diagram in which the device according to the embodiment of the embodiment shown in FIG. 6 is applied to a spinal column. FIG. 4 is a cross-sectional view in which the device according to the embodiment of the embodiment shown in FIG.

  Hereinafter, the present invention and various configurations of the present invention will be described in more detail based on partial schematic diagrams of a plurality of exemplary embodiments.

  The device according to the embodiment of the embodiment shown in FIG. 1 comprises a first element formed as a coupling element having a hollow chamber 5 with an upper surface 3, a lower surface 4 parallel to the upper surface 3 and a central axis 6 perpendicular to the upper surface 3. It includes an object 1, a second object 2 formed as a pedicle screw, a fastening element 12 integral with the second object 2, a clamping element 8 and a drive element 19 formed as a fastening screw. The hollow chamber 5 includes an axial longitudinal portion E (N = 1) that is coaxial with the central axis 6 and passes through the first object 1 and is rotationally symmetric with respect to the central axis 6. This longitudinal portion is formed in a spherical concave shape. Corresponding to the spherical concave shape of the longitudinal part E, the clamping element 8 comprises a longitudinal part D (N = 1), the clamping element 8 being around the central axis 6 and perpendicular to the central axis 6 and having a spherical shape. It is rotatable within the hollow chamber 5 about two other axes intersecting the center. The clamping element 8 additionally includes a longitudinal axis 11, an upper end 13, a lower end 14, and a hole 15 and an opening 50 that are coaxial with the longitudinal axis 11 and axially adjacent to each other. 13 and the lower end 14 are penetrated. The opening 50 has a conical shape and is tapered at a longitudinal portion B (N = 1) starting from the lower end 14, and the longitudinal portion A (N = 1) including the longitudinal portion B is elastic perpendicularly to the longitudinal axis 11. It can be deformed. The elastic deformability is realized by the slot 47, and preferably four slots 47 penetrating from the lower surface 14 in parallel to the longitudinal axis 11 are provided with a 90 ° shift on the peripheral surface.

  In this embodiment, the fastening element 12 (M = 1) is formed integrally with the second object 2, and the lower end 17 is adjacent to the second object 2. The fastening element 12 is introduced into an opening 50 formed in the fastening element 8 with its upper end 16 from the lower end 14. The fastening element 12 tapers in a complementary conical shape with respect to the longitudinal part B of the opening 50 over the longitudinal part C (N = 1) towards the upper end 16 in the axial direction. The clamping element 8 forms a conical clamping connection 18. By sliding the fastening element 12 coaxially within the opening 50, the elastic longitudinal portion A is expanded radially or when the fastening element 12 is slid in the opposite direction, it returns elastically to its initial position. it can. This conical clamping connection allows the second object 2 connected to the fastening element 12 to be releasably connected to the first object 1. The axial sliding of the fastening element 12 is performed by rotating a drive element 19 realized as a fastening screw about the longitudinal axis 11. A rotatable axially-fitting engagement 29 between the drive element 19 and the clamping element 8 at the longitudinal part G is correspondingly formed in the coaxial annular step 20 formed in the clamping element 8 and the hole 15. The annular groove 21 is realized. An axially shaped mating connection between the drive element 19 and the fastening element 12, which is also rotatable around the longitudinal axis 11, penetrates the fastening element 12 from the male thread 22 formed on the drive element 19 and the upper end 16. This is realized by a threaded joint having a corresponding female thread 24 formed in the hole 23. With this threaded joint, the fastening element 12 can slide in the axial direction inside the clamping element 8 by the rotation of the driving element 19, while the axial force generated between the driving element 19 and the clamping element 8 is It is absorbed by the step 20 of the drive element 19 that is supported in the groove 21.

  In the embodiment according to the invention shown in FIG. 2, the axial sliding of the fastening element 12 in the clamping element 8 is formed in a male thread 25 and a hole 15 formed in the longitudinal part G of the drive element 19. In that respect, it is only different from the device according to the invention of the embodiment shown in FIG. An axially-fitting engagement between the drive element 19 and the fastening element 12 that is rotatable about the longitudinal axis 11 is attached to the longitudinal portion F of the drive element 19 so that the drive element 19 and the fastening element 12 are connected. This is realized via a fixing means 29 that absorbs the axial force generated between them. The structure of the fixing means 29 is realized in the form of a coaxial annular step portion 27 formed in the drive element 19, and this step portion is supported in the annular groove 28. The groove 28 is provided in a hole 23 that is coaxial from the upper end 16 and penetrates the fastening element 12.

  The device according to the embodiment of the embodiment shown in FIG. 3 is a combination of the embodiment shown in FIG. 1 and the embodiment shown in FIG. The drive element 19 is connected on the one hand to the clamping element 8 by means of a first threaded joint, which is provided complementary to the fastening element 12 and the male thread 22 formed in the longitudinal part F of the drive element 19. The female screw 24 is provided in a hole 23 that is coaxial with the longitudinal axis 11 and penetrates the fastening element 12 from the upper end 16. On the other hand, the drive element 19 is connected to the longitudinal axis 11 by a second threaded joint comprising a male thread 30 formed in the longitudinal part G of the drive element 19 and a complementary female thread 31 formed in the hole 15 of the clamping element 8. It is coupled to the clamping element 8 in a shape fitting manner in the axial direction so as to be rotatable around.

  The device according to the embodiment of the embodiment shown in FIG. 4 comprises a first plate-like object 1 comprising a hollow chamber 5 having an upper surface 3, a lower surface 4 parallel to the upper surface 3 and a central axis 6 perpendicular to the upper surface 3; It includes a second plate-like object 2, a fastening element 12, a fastening element 8 and a drive element 19 formed as a fastening screw. The clamping element 8 forms the axis of rotation of the articulated connection. The hollow chamber 5 passes through the first object 1 coaxially with the central axis 6 and includes a longitudinal portion E (N = 1) that is cylindrical and rotationally symmetric with respect to the central axis 6. The clamping element 8 includes a longitudinal part D (N = 1) in accordance with the cylindrical shape of the longitudinal part E, so that the clamping element 8 can rotate around the central axis 6 in the hollow chamber 5. The clamping element 8 additionally includes a longitudinal axis 11, an upper end 13, a lower end 14, and a hole 15 and an opening 50 that are coaxial and axially adjacent to the longitudinal axis 11. The clamping element 8 is thus penetrated from the upper end 13 to the lower end 14. The opening 50 tapers in a conical shape starting from the upper end 13 and extending over the longitudinal portion B (N = 1), and the longitudinal axis extending over the longitudinal portion A (N = 1) including the longitudinal portion B. 11 can be elastically deformed perpendicularly. Elastic deformation is achieved by the opening 50 penetrating the clamping element 8 at the longitudinal part A perpendicular to the longitudinal axis 11. The fastening element 12 has a lower end 17 introduced into the opening 50 of the tightening element 8 from the upper end 13. The fastening element 12 tapers in a complementary manner to the longitudinal part B of the opening 50 at a longitudinal part C (N = 1) parallel to the longitudinal axis 11, and thus the fastening element 12 and the fastening element 8 are wedge-shaped. A clamp connection 49 is formed. By sliding the fastening element 12 coaxially in the opening 50, the elastic longitudinal part A is expanded radially, or by sliding the fastening element 12 in the opposite direction, it can be elastically restored to its initial position. From the lower end 17 to the longitudinal portion C, the fastening element 12 is formed in a quadrangular shape and is formed in accordance with a tetrahedral hole 37 (FIG. 5) of the hole 36 coaxial with the longitudinal axis 11 in the second object 2. This makes it possible to fix the second object 2 with the fastening element 12 with respect to rotation about the longitudinal axis 11. The fastening element 12 can slide parallel to the longitudinal axis 11 by turning a drive element 19 realized in the form of a fastening screw around the longitudinal axis 11.

  The drive element 19 can be rotated about the longitudinal axis 11 by means of a first threaded joint comprising a male thread 22 formed on the longitudinal part F of the drive element 19 and a complementary female thread 24 formed on the fastening element 12. In the axial direction, it is coupled to the fastening element 12 in a shape fitting manner. The female screw 24 is provided in a hole 23 that extends concentrically with the longitudinal axis 11 and penetrates the fastening element 12. On the other hand, the drive element 19 is rotated around the longitudinal axis 11 by a second threaded joint comprising a male thread 30 formed in the longitudinal part G of the drive element 19 and a complementary female thread 31 formed in the hole 15 of the clamping element 8. Is connected to the clamping element 8 in a shape fitting manner in the axial direction so as to be rotatable. In order to prevent rotation about the central axis 6, the clamping element 8 is provided with an outer spline 33 formed in the longitudinal part D, which is formed in the longitudinal part E of the hollow chamber 5. It is possible to engage with the complementary inner spline 35.

  The device according to the embodiment of the embodiment shown in FIG. 6 has a conical or wedge shape starting from the lower end 14 and a first opening 50 having a first longitudinal part B that tapers in a conical or wedge shape starting from the upper end 13. 4 in that it comprises a clamping element 8 with a second opening 50 ′ having a second longitudinal part B ′ which tapers to and two complementary fastening elements 12; 12 ′ complementary thereto. Only the embodiment shown is different. The drive element 19 is supported in the tightening element 8 by a fixing means 29 in a shape fitting manner in the axial direction so as to be rotatable around the central axis 6. As in the embodiment shown in FIG. 2, the fixing means 29 comprises a coaxial annular step 27 of the longitudinal part G of the drive element 19, and this step is supported in a complementary annular groove 28 of the clamping element 8. Both fastening elements 12; 12 'are connected to the drive element 19 by a threaded joint, one threaded joint being a right-hand thread joint and the other threaded joint being a left-hand thread joint.

  FIG. 7 is a diagram in which the device according to the embodiment of the present invention shown in FIG. 6 is applied as a multi-part bone plate fixed to the spinal column from the side. Object 1 forms a first bone plate portion that is secured to head vertebral body 43 by bone screw 41, and object 2 serves as a connecting element with second bone plate portion 40 that is secured to tail vertebral body 44. The object 2 is articulated on one side to the object 1 by a clamping element 8 which is supported in the object 1 so as to be rotatable about a central axis 6 (FIG. 6) perpendicular to the surface of the vertebral body 43. The second bone plate portion 40 can be slidable parallel to the longitudinal axis of the spine and can be fixed to the opposite side of the object 2 by means of two adjusting screws 42, so that the bone plate is tangentially movable between the vertebral bodies 43; Allows sliding of the vertebral body parallel to the longitudinal axis. The joint can be fixed by a drive element 19.

  FIG. 8 shows the application of the device according to the embodiment of FIG. 3 as a coupling element inside the spinal fixation system. The object 1 serves as a connecting element between the object 2 formed as a pedicle screw and the longitudinal member 45. The longitudinal member 45 is fixed in the object 1 by, for example, a screw 46. Such spinal fixation systems are described, for example, in WO94 / 00066 SCHLAPER et al. Is known.

Claims (46)

A device for articulating two objects, said device comprising:
A first object (1) comprising a hollow chamber (5);
A clamping element (8) with a longitudinal axis (11);
A drive element (19),
And A) wherein the hollow chamber wall (5) extending in the axial direction of the hollow chamber (5) comprises a rotationally symmetrical longitudinal portions (E) with respect to the central axis (6) of the first object (1) ;
B) has a length hand part the fastening element (8) extends in the axial direction with respect to the clamping element (8) (A), the longitudinal portion (A) is the fastening elements (8) said longitudinal axis (11) relative to a elastically deformable in the vertical direction;
C) Oite outer contour in the region of the longitudinal portion (A) of said clamping element (8), against the longitudinal portion (E) of the said hollow chamber in the axial direction of the tightening element (8) (5) Having a longitudinal portion (D) complementary to the longitudinal portion (E) , extending in the axial direction of the clamping element (8) in terms of geometry and surface structure;
D) said devices, at least one Tightened elements having each one of the upper end (16) and a lower end (17) (12; contains 12 ');
E) the opening in the clamping element (8) (50), said at least one Tightened element (12 during expansion; contacts 12 '), in the axial direction with respect to the clamping element (8) Having a longitudinal portion (B) provided ;
F) said at least one Tightened element (12; 12 ') is, the opening by the drive element (19) (50) and is actively slidable in both direction of the coaxial, thus the elastic longitudinal portion (a) is returned to the vertically spreading by or initial position in the longitudinal axis (11), thus the longitudinal portion (D) is lockable or releasable in the longitudinal section (E) of the hollow chamber (5) Is;
G) said drive element (19) comprises a longitudinal portion extending coaxially to the longitudinal axis (11) of the tightening element (8) (G), and said at least one Tightened element (12; said 12 ') longitudinal axis (11) is coupled to the long hand part that extends coaxially (F) with respect to, characterized in that it is coupled to a shape-fitting rotatably in the axial direction about said longitudinal axis (11) apparatus. It said opening (50) of at least a longitudinal portion (D) apparatus 請 Motomeko 1 wherein you characterized in that it tapers in the axial direction over the region of. It said at least one Tightened element (12; 12 ') of at least a longitudinal portion (C) apparatus 請 Motomeko 1 wherein you characterized in that it tapers extending across the region in the axial direction. It characterized in that tapers extending complementary to; (12 '12) is longitudinally over the region of the longitudinal portion (C) in the axial portion (D) at least one Tightened elements the apparatus of 請 Motomeko 2 described. Said at least one Tightened element (12; 12 ') is the longitudinal axis (11) has a hole (23) extending coaxially, said driving element (19) is the longitudinal axis in the longitudinal portion (F) (11) the fastening to the a possible threaded the hole coaxially (23), also secured by means (29) in the longitudinal section (G), to rotatably shape-fitting in the axial direction around the longitudinal axis (11) apparatus 請 Motomeko 1-4 wherein you characterized in that it is coupled to a biasing element (8). Wherein a driving element (19) external thread (22) which is formed in the longitudinal portion (F), said at least one Tightened element (12; 12 ') of the bore (23) of the longitudinal axis (11) apparatus 請 Motomeko 5 wherein you characterized as having a complementary internal thread extending coaxially (24). Said fixing means (29), longitudinal portions (G) an annular step portion formed in (20), and complementary formed hole (15) of the fastening element (8) of the drive element (19) apparatus to that請 Motomeko 6 wherein, comprising the specific annular groove (21). In that the hole (15) can be introduced into the lower end (14) said groove (21) open and thus the drive element (19) from the side next to the direction of the clamping element (8) apparatus 請 Motomeko 7 wherein you characterized. Said drive element (19) is capable threaded into the hole (15) of the fastening element coaxially (8) to the longitudinal axis (11) in the longitudinal section (G), fixed in the longitudinal section (F) A means (29) connected to the at least one fastening element (12; 12 ') in an axially shape-fitting manner so as to be rotatable about the longitudinal axis (11). The apparatus of 1-4. Wherein a driving element (19) is Oite external thread in the longitudinal portion (G) (25), complementary said bore of the clamping element (8) (15) extending in concentric with the longitudinal axis (11) apparatus 請 Motomeko 9 wherein you characterized in that it has a female thread (26). Said fixing means (29), the annular step portion formed in the longitudinal portion (F) of the drive element (19) and (27), said at least one Tightened element (12; 12 ') of the hole (23) in It is from a formed complementary annular groove (28) in the apparatus 請 Motomeko 10 wherein you said. Introduced into an upper end is open laterally from the direction of (16), thus the drive element (19) from said transverse grooves (28) of the; (12 '12) the hole (23) is at least one Tightened elements apparatus 請 Motomeko 11 wherein you characterized in that possible is. A) said drive element (19) has an external thread (22) formed in the longitudinal portion (F), said at least one Tightened element (12; 12 ') with coaxial against the longitudinal axis (11) Having a hole (23) with a complementary internal thread (24) extending;
B) said drive element (19) has an external thread (30) formed in the longitudinal portion (G), said complementary female screw tightening element (8) is formed in the hole (15) and (31) apparatus according to any one of 請 Motomeko 1-4 you characterized as having. The female screw (24) and the corresponding external thread (22) forms a first threaded joint, said female thread (31) and the corresponding external thread (30) you and forming a second threaded joint 請 The apparatus according to claim 13 . One of the threaded joint is left screw device 請 Motomeko 14 wherein you wherein the other of the threaded joint is the right thread. Apparatus 請 Motomeko 15 wherein it wherein the lead angle of both of the threaded joint is identical. Apparatus 請 Motomeko 14 or 15, wherein lead angles of both threaded joint you wherein different. Any the fastening element (8) of the hollow chamber (5) of the longitudinal portion 請 Motomeko 1-17 you wherein a in the area of (E) can be frictionally coupled to the first object (1) A device according to claim 1. 請 Motomeko 1 you characterized in that the fastening element (8) can be coupled to the elongate portion shape-fitting to the first object (1) in the area of (E) of the hollow chamber (5) 18. The device according to any one of items 17 . It said at least one Tightened element (12; 12 ') is apparatus according to any one of 請 Motomeko 1-19 you characterized in that tapers conically in the longitudinal section (C). Apparatus according to any one of 請 Motomeko 1-19 you characterized in that the fastening element (8) is in the tapered conically in the longitudinal section (B). Apparatus 請 Motomeko 20 or 21, wherein you, characterized in that said tapered portion is complementary. It said at least one Tightened element (12; 12 ') is apparatus according to any one of 請 Motomeko 1-19 you characterized in that tapers to a wedge-shaped in the longitudinal section (C). Apparatus according to any one of 請 Motomeko 1-19 you characterized in that the fastening element (8) is in the tapered wedge with longitudinal part (B). Apparatus 請 Motomeko 23 or 24, wherein you, characterized in that said tapered portion is complementary. It said at least one Tightened element (12; 12 ') is apparatus according to any one of 請 Motomeko 1-25 you characterized in that it is frictionally coupled to the second object (2). It said at least one Tightened element (12; 12 ') is apparatus according to any one of 請 Motomeko 1-25 you characterized in that it is coupled to the shape-fitting the second object (2). Is formed in a complementary cylindrical in at least one region of the outer circumferential surface (10) and the hollow chamber (5) wall and the longitudinal part pair (D) and (E) of said clamping element (8) 28. Apparatus according to any one of claims 1 to 27. A) The hollow chamber (5) comprises two longitudinal portions (E; E ′), one of the longitudinal portions (E; E ′) leading to the upper surface (3) and the other leading to the lower surface (4);
B) Two openings (50; 50 ') adjacent to the hole (15) start from the upper and lower ends (13, 14) and taper at the longitudinal part (B; B');
Beginning from the direction of 14), the longitudinal portion (B;; C) the clamping element (8) each one end (13 perpendicular to the longitudinal axis (11) in); B 'A) a longitudinal portion including the (A' elastically deformable are possible, and at least partially longitudinally portions have a shape corresponding to; (E 'E) (a ;; a') each one of the longitudinal portion including the (D D ') to Oite longitudinal portion And
D) the device comprises two fastening elements (12; 12 ');
E) said comprises drive elements (19) is a male screw (22) formed in the longitudinal portion (F) longitudinal portion (F ') which is formed in the external thread (51) and, while the left-hand thread of the screw, the other Right-hand thread
F) said Tightened element (12; 12 ') one has a female thread (24) corresponding to the external thread (22), the other a feature in that it has a female thread (52) corresponding to the external thread (51) apparatus according to any one of 請 Motomeko 1-28 you. The external thread (22) and said external thread (51) The apparatus of 請 Motomeko 29 wherein you characterized by having a lead angle of the same value. The external thread (22) and said external thread (51) apparatus 請 Motomeko 29 wherein you characterized by having a lead angle of a different value. Said opening (50; 50 ') is a longitudinal section (B; B') apparatus to that請 Motomeko 30 or 31 wherein, characterized in that it is formed in a conical shape in the region of. Wherein Tightened element (12; 12 ') in the longitudinal portion (C; C') apparatus to that請 Motomeko 30 or 31 wherein, characterized in that it is formed in a conical shape in the region of. Wherein Tightened element (12; 12 ') in the longitudinal portion (C; C'; complementarily 請 Motomeko 32 according you, characterized in that a conical shape with respect to (B 'B) region in the longitudinal portion of the) Equipment. Said opening (50; 50 ') is a longitudinal section (B; B') apparatus to that請 Motomeko 30 or 31 wherein, characterized in that it is formed in a wedge shape in the region of. Wherein Tightened element (12; 12 ') in the longitudinal portion (C; C') apparatus to that請 Motomeko 30 or 31 wherein, characterized in that it is formed in a wedge shape in the region of. Wherein Tightened element (12; 12 ') in the longitudinal portion (C; C') regions the longitudinal part of the (B; B ') shall be the characterized by being formed complementarily wedge against 請 Motomeko 35. Apparatus according to 35 . Apparatus according to any one of 請 Motomeko 1-37 you wherein said the clamping element (8) the first object (1) can be frictionally coupled. Apparatus according to any one of the 請 Motomeko 1-37 you wherein the clamping element (8) the first object (1) can be coupled to the form-fitting equation. The fastening element (8) is the outer peripheral surface comprises a (10), said outer circumferential surface (10) is 請 Motomeko 1 you characterized by having a three-dimensional structure Oite the longitudinal portion (D) 39 The device according to any one of the above. The hollow chamber (5) The apparatus of any one of 請 Motomeko 1-40 you characterized by having a three-dimensional structure Oite the longitudinal portion (E). The fastening element (8) The apparatus of any one of 請 Motomeko 1-39 you comprising a longitudinal portion roughened outer peripheral surface in the (D) (10). The hollow chamber (5) The apparatus of any one of 請 Motomeko 1-39 characterized in that it is roughened in the longitudinal section (E). The fastening element (8) The apparatus of any one of 請 Motomeko 1-39 you comprising a peripheral surface (10) having a Oite splines (33) in the longitudinal section (D) . The hollow chamber (5) The apparatus of 請 Motomeko 44 wherein you characterized by having a spline (35) corresponding to the splines (33) Oite the longitudinal portion (E). Oite to the first object (1) is a longitudinal section (E), also Oite the fastening element (8) is a longitudinal section (D), characterized by having a different hardness 請 Motomeko The apparatus according to any one of 1 to 45 .

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