Connection kit for spinal osteosynthesis

 

The invention relates to medicine, namely to traumatology. The invention provides empowerment movements of different elements in relation to each other. Connection kit for spinal osteosynthesis, comprising means for fixing the bone containing the connecting area for engagement with the connecting means. The connecting means in its lower part is made of a spherical shape to allow free positioning of the connecting means in the connector or the connecting element containing additional shaped cavity. Plot spherical forms together with a connector or coupling element longitudinal limiter positioning. 18 C.p. f-crystals, 17 ill.

The invention concerns a connecting kit for spinal osteosynthesis.

In particular, the invention relates to splice kit for spinal osteosynthesis, comprising means for fixing the bone containing the connecting area for engagement with the connecting means.

The prior art connector sets, in particular German utility model No. 9215561.

The main drawback of the roll movements of different elements in relation to each other.

Object of the invention is the creation of connecting kit for spinal osteosynthesis, including means for fixing the bone containing the connecting zone (29) for cooperation with the connecting means, in which the connecting means in its lower part is made of a spherical shape to allow free positioning of the connecting means in the connector or the connecting element containing additional shaped cavity, and the area of the spherical shape forms together with a connector or coupling element longitudinal limiter positioning.

Optimally, so that the connecting means has been terminated to the connector so as to reach the joint of the two parts while ensuring the rotation of the connecting means in the connector.

According to a variant implementation of the connector contains the input cone to skip Executive body, resulting in a rotation of the connecting means.

Preferably, the deflection angle of the connector relative to the connecting means constituted about 30in the case when the Executive has the authority to drive the rotation of the connecting Sredinnyi in the spherical part of the connecting means so what if the final fixing system deformation. Preferably, these slits were longitudinal.

Also preferably, in its lower part of the connecting means contained skirt. On the lower end of the skirt thread to facilitate its penetration into the bone.

Preferably, the means for fixing the bones contained in the upper part of the plot to give initial direction specified by the connecting means to ensure the location of the connecting means and screw straight lines.

The connecting means made in the form of nuts.

The connector is provided with at least one recess for accommodating the coupling element.

The connector may include a locking recess extending into the cavity, forming a spherical socket, and a recess for accommodating the coupling element.

Connection kit according to the invention may contain a locking roller, which may be specified in the locking recess. This locking roller may be replaced with the connecting element.

In addition, the locking groove may be oriented in a substantially perpendicular direction to vasanam adjusting platen.

The recess for accommodating the coupling element may be rectangular in shape when the connector is closed, or U-shaped with access to one of the surfaces when the connector open type.

The connector can be provided with two notches for accommodating the coupling element consisting of a rod, a bent U-shape with overlapping ends, with the connecting element contains additional shaped cavity in the area of the spherical shape.

Preferably, at the upper end of the connecting means was performed threaded portion in the form of a hexagon to ensure screwing the secondary nut.

In more detail, the present invention is presented below in the description of non-limiting example, with reference to the attached drawings, which depict

Fig.1 - splice kit according to the basic variant, with means of fixing bones, perspective view;

Fig.2 - connection kit Fig.1, a view in a disassembled state;

Fig.3 - connection kit Fig.1, a view in partial section;

Fig.4 - nut according to the invention with a skirt and longitudinal slits, perspective view;

Fig.5 - nut of Fig.4, ustalenia and/or with a smooth plot of reverse and smooth connecting section, perspective view;

Fig.7 - screw with a smooth plot to give initial direction, the threaded section reverse and a threaded connecting section, combined with a screw thread for bones, perspective view;

Fig.8 - screw with a smooth plot to give initial direction, the threaded section reverse and a threaded connecting section, not combined with a screw thread for bones, perspective view;

Fig.9 - screw with a smooth plot to give initial direction and a threaded connecting section, not combined with a screw thread for bones, perspective view;

Fig.10 - connection kit with locking system between the connecting means and the connecting rod, perspective view;

Fig.11 - connection kit Fig.10 with the locking roller, a view in section;

Fig.12 - connection kit Fig.10 with the second connecting element, perspective view;

Fig.13 - connecting kit connecting rod, a curved U-shape with overlapping ends according to a variant implementation, perspective view;

Fig.14 - connection kit Fig.13, a view in a disassembled state;

Fig.15 - connection kit Fig.13, a view with partial rlect with means for fixing to a bone in the form of a hook, the perspective view.

The present invention relates to splice kit for spinal osteosynthesis, represented mainly by the embodiment of Fig.1, which includes means for fixing the bone containing the connecting zone (29) for cooperation with the connecting means.

Means for fixing the bone may consist of screws (1) that contains at least one thread (2) for screwing into the bone.

In addition, the screw (1) contains a connecting zone (29) to communicate with the specified coupling facility.

Thread (2) for screwing into the bone has as its primary purpose the provision of anchoring in the bone. It may have, if necessary, and a secondary purpose, which consists in placing a connecting system connecting element in the case when the connecting zone (29) combined with the upper part of the thread (2) for screwing into the bone.

At the upper end of the screw (1) provided by the system (5) to bring into rotation. This system, for example, in the form of a hexagon has a dual function: to bring the screw (1) in rotation during its penetration into the bone and blocked from rotation in the final fastening of the mechanism to avoid more nichael along the screw (1) either directly to the coupling element (3’) in the case when, for example, this element is a rod, a curved U-shape with overlapping ends, either through bevel connector (8).

The connecting means may consist of a nut (19). In this case, the internal thread (7) and nuts (19) corresponds to the thread of the connecting zone (29), i.e. in the embodiment shown in figures 1, 2 and 3, it corresponds to the thread (2) screw (1) for screwing into the bone. Nut (19) is screwed on the section of the screw (1), not recessed into the bone.

In its lower part nut (19) has a spherical shape (20). This spherical form to save free positioning nut (19) on the connector (8), where the presence of nests of the same type, or on the coupling element (3). This spherical shape (20) forms together with the connector (8) or connecting element (3) longitudinal limiter positioning. In the preferred case of application of the connecting means embedded in the connector (8) or in the connecting element (3) so that the two parts are interconnected by ensuring the rotation of the connecting means on the connector (8) or the connecting element (3).

The drive system (21), for example the outer hexagon, is located on Stacie adjustment connector (8) or the coupling element (3) along the screw (1). The rotation of the connector on the connecting means provided by the presence of the input cone (22) in the connector (8) for the passage of the Executive body to bring the rotation of the connecting means. As an example: the angular deviation of the D axis And the connector on the connecting means is in the preferred embodiment, 30 degrees in the case when the Executive has the authority to bring the rotation of the connecting means, as shown in Fig.3.

The slot (23) is performed in the spherical part of the connecting means so that when the final fastening of the system deformation. Such deformation necessary to block screw (1) from the rotation.

The slot (23) can be placed transversely, as shown in Fig.2, or longitudinally, as shown in Fig.4.

Preferably, the longitudinal slots came into the lower part (20) of the spherical shape. Their number can be 1, 2, 3, 4, 5 and more.

The connecting means contains in its lower part of the skirt (28), shown in figures 4 and 5. This skirt (28) provides a mechanical transition between the screw (1) and section (20) of the spherical shape. Indeed, too sharp transition would breakage of the screw in which ucse to distribute the load from the nut on the screw.

Skirt (28) may be threaded at its end to facilitate penetration into the bone.

Connective zone (29) of the screw (1) may be made at the top of the thread for screwing into the bone and to contain a thread similar to the thread for screwing into the bone, as shown in Fig.7, however, it may be a different thread, as shown in figures 8 and 9, or may not include threads, as shown in Fig.6.

Therefore, in the latter case, the connecting means includes a smooth inner wall and does not form a nut.

According to a variant implementation of the screw (1) contains in its upper part, smooth area (30) to provide initial direction to ensure the location of the connecting means along the straight line when installing the connecting means, especially when using the nuts (19).

Section (30) to give initial direction contains a smooth surface, as shown in figures 6-9. Outer diameter substantially equal to the inner diameter of the connecting means, to provide for the maximum rectilinear longitudinal direction (without angle of slope).

Smooth section (30) to give initial direction can also serve the area (34) th thread (2) for screwing into the bone, as shown in Fig.7, or a different thread, as shown in Fig.8.

Screw (1) may also be provided with a slot (31), which facilitates the removal of the top plate screws (1) containing a smooth section (30) to give initial direction and/or area (34) reverse. Under this annular slot (31) made the drive system (32), which after the destruction of the extracts of the screw (1), in particular, when removing the connecting set, as shown in figures 7-9.

According to the basic variant of implementation, the connector (8) contains a single recess for accommodating the coupling element (3), consisting of a rod. This recess may be of rectangular shape (24) when using the connector (8) of the closed type or U-shaped in and out on one of the surfaces when using connector open type. When using the connector (8) of the closed type rod should be typed in the connector, and when using connector open type rod (3) may be injected into the connector on the back or side.

A recess (24) for placement of the rod (3) is designed so that the rod (3) can be based on the area (20) of the spherical shape of the nut (19), as shown in Fig.3.

Therefore, Acevi the translational motion, namely:

rotation of the connector (8) and, consequently, the rod (3) around the locking means in two, perpendicular to the screw (1) axes;

rotation of the connector (8) and, consequently, the rod (3) around the locking means on an axis identical to the axis of the screw (1);

- forward movement of the rod (3) in the connector (8) on its axis;

- forward movement of the connector (8) and, consequently, the rod (3) along the screw (1) by regulation of the locking means.

In addition, rotation of the rod (3) around its own axis gives splice kit additional degree of freedom.

The connector (8) contains, in addition, the locking recess (25) for accommodating the locking system. According to the primary purpose of this locking system is a nut (26) with a drive system (27) for the application of torque, sufficient to provide good mechanical strength of the package, as shown in Fig.3.

Blocking this connection is provided by pressing the coupling element (3) to section (20) of the spherical shape. Due to the fact that the connecting element (3) connected with the connector (8) in the pressed nut (26), all degrees of freedom are eliminated.

In Varian the adjustment roller (36), moreover, the specified locking groove (25) also extends mainly in a perpendicular direction for insertion of the locking sleeve (37), as shown in Fig.10.

In addition, the locking sleeve (37) includes a protrusion (38) for engagement with the notch in the specified locking roller (36) to eliminate the position at which the locking roller (36) disconnects from the connector when the kit is not yet fixed, as shown in Fig.11.

The locking roller (36) can be replaced by a connecting element (3) to provide additional connectivity, as shown in Fig.12.

In this embodiment, the fixing kit is achieved through force, acting simultaneously on the connecting element (3) and section (20) of the spherical shape and produced by connecting the platen (36) or the second connecting element (3).

It is necessary to provide multiple connectors to allow selection of such of them, in which the distance between the screw and the connecting or connecting elements is identical.

In another embodiment, the connector (8) is provided with two notches for accommodating the coupling element (3’) comprising the (3’) contains additional shaped cavity in the area of the spherical shape (20).

The rod is bent so that the ring is formed with an elongated cross-section, liken plate for osteosynthesis.

The threaded portion (40) in the form of a hexagon is made on the upper end of the nut (19), as shown in Fig.14, providing a secondary screw the nuts (41) and fixing kit.

The connector (8) is likened to the ring with a cavity for the passage of the coupling element.

Chamfer (42), shown in Fig.15, made on the secondary nut (41). This chamfer is designed to interact with the upper outer part of the connector (8).

In this embodiment, the locking means are mounted in the connector (8) and covers the connecting element (3’) thus, what is achieved by the combination of three parts while providing a rotation locking means in the connector (8) and the translational motion of the coupling element (3’) in it.

The final fastening is effected by the secondary screw the nuts (41) on the locking means so that the set loses degrees of freedom.

Means for fixing the bone may also consist of a hook (4), as shown in figures 16 and 17.

Claims

1. Connection kit for spinal osteosynthesis, is determined as being a tool characterized in that the connecting means in its lower part made of spherical shape (20) for free positioning of the connecting means in the connector (8) or the connecting element (3), containing additional shaped cavity, and the area (20) of the spherical shape formed with a connector (8) or connecting element (3, 3’) of the longitudinal limiter positioning.

2. Connection kit for spinal osteosynthesis under item 1, characterized in that to achieve the connection of the two parts while ensuring the rotation of the connecting means in the connector (8), the connecting means are mounted in the connector (8).

3. Connection kit for spinal osteosynthesis under item 1 or 2, characterized in that the connector contains the input cone (22) for the passage of the Executive body to bring the connecting means during the rotation.

4. Connection kit for spinal osteosynthesis according to p. 3, characterized in that the angular deviation of the connector (8) from the connection means is about 30in the case when the Executive has the authority to bring the connecting means during the rotation.

5. Connecting complexity deformation in the final fastening of the system connecting means includes notches (23), performed on the area (20) of the spherical shape of the connecting means.

6. Connection kit for spinal osteosynthesis according to p. 5, characterized in that the slots (23) performed a longitudinal (30).

7. Connection kit for spinal osteosynthesis at least one of the preceding paragraphs, characterized in that the connecting means contains in its lower part of the skirt (28).

8. Connection kit for spinal osteosynthesis according to p. 7, characterized in that the skirt (28) is threaded at its lower end to facilitate its penetration into the bone.

9. Connection kit for spinal osteosynthesis at least one of the preceding paragraphs, characterized in that the means for fixing bone contains in its upper part, smooth area (30) to give the connecting means initial direction.

10. Connection kit for spinal osteosynthesis at least one of the preceding paragraphs, characterized in that the connecting means made in the form of nuts (19).

11. Connection kit for spinal osteosynthesis at least one of the preceding paragraphs, characterized in that the connector (8) is provided with at least one weekending osteosynthesis on p. 11, characterized in that the connector (8) contains a locking recess (25) extending into the cavity, forming a spherical socket (20) and the recess (24) for accommodating the coupling element (3, 3).

13. Connection kit for spinal osteosynthesis according to p. 12, characterized in that it contains the locking roller (36) mounted in the locking recess (25).

14. Connection kit for spinal osteosynthesis according to p. 13, characterized in that the locking roller (36) is arranged to replace the connecting element (3).

15. Connection kit for spinal osteosynthesis according to p. 13 or 14, characterized in that the locking groove (25) extends in a substantially perpendicular direction and serves to introduce the locking sleeve (37).

16. Connection kit for spinal osteosynthesis according to p. 15, characterized in that the locking sleeve (37) includes a protrusion (38) for engagement with the notch in the adjusting roller (36).

17. Connection kit for spinal osteosynthesis according to any one of paragraphs.11-16, characterized in that the recess (24) is made of a rectangular shape in the case of the use of the connector (8) of the closed type or U-shaped with vytoplennogo osteosynthesis on p. 11, characterized in that the connector (8) is provided with two notches (24) for accommodating the coupling element (3consisting of a rod, a bent U-shape with overlapping ends, and containing additional shaped cavity in the area of the spherical shape (20).

19. Connection kit for spinal osteosynthesis at least one of the previous paragraphs.1-18, characterized in that the threaded portion (40) is designed as a hexagon on the upper end of the connecting means for screwing the secondary nut (41).

 

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