DE202006017353U1 - Spinal column implant for surgeon, has segment and connecting section extending in longitudinal direction, where connecting section is formed for retaining coupling part, and spinal column implant is geometrically formed - Google Patents

Abstract

The implant has a segment (1a) extending in a longitudinal direction, and including front side limiting surfaces (6, 7) that runs perpendicular to the longitudinal direction. The front side limiting surfaces are provided with groove profiles (8, 9), where the segment has an open channel (10) at the front side limiting surfaces. A connecting section (16) extends in longitudinal direction in interior of the segment based on the open channel. The connecting section is formed for retaining a coupling part, where the spinal column implant is geometrically formed. An independent claim is also included for a kit for a multi-part spinal column implant with two spinal column implants.

Description

The The invention relates to a spinal implant as well as a kit for a multipart spine implant.

State of technology

From the patent DE 197 38 052 a spinal implant is known, which is designed substantially as a tubular formed insert segment. This spinal implant has the disadvantage that it is only partially suitable for use in certain, altered spinal areas.

presentation the invention

task The invention is a spinal implant to be designed so that it is more versatile.

These Task is solved with a spinal implant having the features of claim 1. The dependent claims 2 to 8 relate to further, advantageously designed spinal implants.

The Task will be solved further with a kit for having a multi-part spinal implant the features of claim 9. The dependent claims 10 to 15 relate to further, advantageous kits.

The Task is solved in particular with a spinal implant consisting of a longitudinally extending segment with perpendicular to the longitudinal direction extending, frontal boundary surfaces, which with a groove profile are provided, wherein the segment on at least one front side boundary surface an opening and wherein a connecting portion, starting from the opening, longitudinal extends into the interior of the segment, wherein the connecting portion is designed for receiving a coupling part.

By the inventive Embodiment becomes a spinal implant created that allows high flexibility by the spinal implant on the one hand implantable as the sole segment, and in the the spinal implant on the other hand has a connecting portion to connect by joining at least two spinal implants a multipart spine implant train. Dependent from the respective state of the spinal area to be treated can the inventive spinal implant thus either as a single segment, or as a multi-part spinal implant be implanted. The inventive kit makes it possible a plurality of available standing segments at least two and select these with each other to a multipart spine implant connect to. The inventive spinal implant Therefore, for example, it can be assembled in a plurality of possible lengths. The inventive Spine implant can Therefore, according to the variety of possible lengths of the spinal column area to be replaced, exactly with the required length be compiled. The spinal implant according to the invention makes it possible it therefore a damaged one spine better to take care of. The spinal implant according to the invention can also be three or even more interconnected segments.

The invention spinal implant has a connecting portion for receiving a coupling part on. In an advantageous embodiment, the connecting portion comprises a Snap-in device to two successively arranged spine implants firmly connect with each other. Preferably, each spinal implant has at its two ends depending on a connecting portion for receiving a coupling part, so that each spinal implant two connecting portions having. Each connecting portion preferably has a linearly displaceable Direction of movement, in the direction of which two juxtaposed spinal implants mutually shifted and connected with each other. Preferably the two connection sections extend mutually parallel. In a further advantageous embodiment, the two run in the end region of a spinal implant arranged connecting sections mutually under a blunt Angle.

Of the Connecting portion of the spinal implant as well as the coupling part could be configured such that a plug connection is formed will, without a latch. The connecting section and the coupling part preferably have mutually parallel Connecting parts which can slide into each other to to form such a connector. The connecting section and the coupling part could however, be configured in a variety of forms to one another Form plug or snap connection.

advantageously, is the spinal implant made of a biocompatible plastic. The spinal implant could However, also made of metal, a ceramic, or a plastic.

The Invention will be explained in more detail with reference to drawings.

Short description the drawings

The In order to explain the embodiments used drawings show:

1 a spinal implant consisting of a segment;

2 a side view of the spinal implant according to 1 ;

3 a longitudinal section along the section line AA through the spinal implant according to 1 ;

4 a view of the front side of the spinal implant according 1 ;

5 a side view of another, shortened spinal implant;

6 a longitudinal section through the spinal implant according to 5 ;

7 a longitudinal section through another spinal implant;

8th a side view of a coupling part;

9 a front view of the in 8th illustrated coupling part;

10 a longitudinal section through the in 8th illustrated coupling part along the section line BB;

11 a view of the front side of the coupling part;

12 a longitudinal section through a multi-part spinal implant.

Basically in the drawings, like parts with the same reference numerals.

Ways to execute the invention

1 shows an embodiment of a spinal implant 1 , which is in the form of a segment 1a is trained. The spinal implant 1 is approximately tubular and has, as in 4 represented, a substantially trapezoidal base cross-section or outer cross section. This is how the spinal implant forms 1 a narrower front outer wall 2 and a wider rear outer wall 3 which through a rear side wall 4 and a front sidewall 5 connected to each other. The frontal upper boundary surface 6 and the front-side lower boundary surface 7 are each with a groove profile 8th respectively. 9 provided, which extends over the entire width of each associated boundary surface 6 respectively. 7 extends.

Through the two outer walls 2 and 3 and through the side walls 4 and 5 becomes inside the vertebral segment 1 a continuous channel open on both sides 10 educated. The two side walls 4 and 5 each have three slot-like openings 11 on. Im in a vertebral body a set state of the spinal implant 1 can in these breakthroughs 11 the vertebral body grow at least partially, so that a secure hold of the spinal implant 1 can be reached in the vertebral body.

The spinal implant 1 is for insertion into a correspondingly shaped recess, which is introduced ventral side in a vertebral body of a human spine, in the insertion direction of the arrow 12 can be used in this recess. This is the spine implant 1 when inserted with its narrower outer front wall 2 within the recess of the vertebral body. In this case, the recess of the vertebral body is designed such that the spinal implant 1 with its wider rear outer wall 3 approximately flush with the spinal outer surface or with the outer surface of the vertebral body. The spinal implant 1 could be made of metal, for example of a titanium alloy according to ASTM F 136. The spinal implant 1 could also be made of a plastic, such as a chemically inert, non-absorbable polymer. The spinal implant 1 made of plastic points in the upper boundary surface 6 and in the lower boundary surface 7 preferably three holes each 13 respectively. 14 on, in each of which an elongated metal body is inserted. These metal bodies are used for the exact location of the spinal implant 1 within the body so that it can be determined by X-ray inspection.

The length L is in the embodiment according to 1 in about 20.5 mm. This length L is essentially dependent on the type of insert and the length of the vertebral body or the vertebral bodies in which the spinal implant 1 is to use. Thus, several different lengths L are provided, which may be varied, for example, in the ranges of 20 mm, 22 mm, 24 mm and 26 mm. In this length range of 20 mm to 26 mm and finer gradations z. B. in 1 mm increments or smaller.

Also, the total length greater than 26 mm or less than 20 mm be elected, which, as already mentioned, on the respective Einsatzbedin depends on.

2 shows a front view of the rear outer wall 3 of in 1 spine implant shown 1 with threaded hole 15 , 4 shows a plan view of the front side of the spinal implant 1 and 3 shows a longitudinal section through the spinal implant 1 along the in 4 shown section plane AA. Out 3 it can be seen that the spinal implant 1 above and below each a connecting section 16 with inner surface 16a and paragraph 16b having. Each of the two connecting sections 16 is for receiving a coupling part 17 designed. The two connecting section 16 are straight in the longitudinal direction L and in the direction 16c respectively 16d running out. In an advantageous embodiment, the longitudinal directions intersect 16c . 16d at an obtuse angle α. The frontal boundary surfaces 6 . 7 have perpendicular to the longitudinal direction or perpendicular to the longitudinal directions 16c . 16d running groove profiles 8th . 9 on, what herein also as perpendicular to the longitudinal direction L extending, frontal boundary surfaces 6 . 7 is designated, the groove profiles 8th . 9 perpendicular to the longitudinal direction L, 16c . 16d run. The frontal boundary surfaces 6 . 7 have to go in the direction of the arrow 12 , such as in 1 shown, not perpendicular to the longitudinal direction L, but may be configured in a special, not shown embodiment.

The interior 10 points in the middle area of the spine implant 1 an intermediate section 20 with a smaller inner cross section than the upper and lower connecting portion 16 so that a transition point is formed. Preferably, this transition point, as in 4 represented a paragraph 16b on. The intermediate section 20 could also be completely filled with material or closed, so instead of the paragraph 16b forming a soil.

In a preferred embodiment, the connecting portion 16 Part of a latch 21 . 21a , In the illustrated embodiment, the latching device comprises 21 an edge 21a , at which, as in 10 represented the nose 21b of the coupling part 17 intervenes. The latching device 21 can be configured in a variety of other embodiments to a locking and connecting the coupling part 17 with spinal implants 1 to effect. The coupling part 17 can be designed like a tube in an advantageous embodiment.

5 shows a side view of a spinal implant 1 with one opposite 2 shorter length L. 6 shows a longitudinal section through the in 5 illustrated spinal implant 1 , Compared to the in 3 spine implant shown 1 has the in 6 illustrated embodiment has a much shorter length L, and only two slot-like openings 11 ,

7 shows in a longitudinal section a further embodiment of a spinal implant 1 , which two mutually parallel connecting sections 16 having. In other words, the two would be in 3 illustrated longitudinal directions 16c and 16d in the embodiment according to 7 at an angle of 180 degrees.

8th shows a side view of a coupling part 17 from the in 11 represented direction D. 9 shows a side view of the coupling part 17 from the in 11 direction shown C. The coupling part 17 has breakthroughs 19 and protruding noses 21b on. 10 shows a longitudinal section through the coupling part 17 along the in 11 illustrated section line BB. 11 shows an end view of the coupling part 17 with protruding noses 21b ,

12 shows in a longitudinal section, in a section similar to the one in 4 illustrated section AA, a multipart spine implant 22 comprising two spinal implants 1 or segments 1 that of a coupling part 17 are held together. 12 shows the cut side walls of the coupling part 17 , whereas the remaining, in itself between the two cut side walls extending coupling part 17 for better representation of the latch 21 only the protruding noses 21b are shown, which on Einrastteil 21a abut, so that the two segments 1 over the coupling part 17 firmly connected, and the two segments 1 on a common area 1b rest on each other. 10 shows this state on the left side in detail. The two superimposed segments 1 lie on a common surface 1b on top of each other, with the two segments 1 with the help of the coupling part 17 , By the thus formed latching device 21 are firmly connected. This connection can be solved, for example, with a special tool, with which on the noses 21b from the outside a pressure is exerted by the tool over the slot-like breakthrough 11 a force on the coupling part 17 exercises, and this deformed so that the nose 21b no longer in engagement with the latching part 12a is, so the segment 1 from the coupling part 17 can be separated and deducted. Should also be the coupling part 17 must be removed, so, after in 10 the upper segment 1 was removed, a tool through the upper opening 19 whoever and then with the above-mentioned special tool by engaging in the lower slot-like opening 11 the behind arranged coupling part 17 be deformed such that the latching device 21 is dissolved, so that the coupling part 17 over that through the upper opening 19 extending tool can be deducted.

In another embodiment, not shown, the coupling part 17 also stuck with a segment 1 be connected. For example, the coupling part could 17 and the segment 1 consist of a single piece, the coupling part 17 as in 10 represented over the face 6 of the lower segment 1 so that, as required, a suitable second segment 1 on the coupling part 17 can be placed to such a multi-part spinal implant 22 to build.

Advantageously, the spinal implants 1 ordered as a kit available, with such a kit a plurality of preferably different spine implants 1 and at least one coupling part 17 , and preferably also a plurality of coupling parts 17 includes. Thanks to this kit, it is possible a multi-part spinal implant 22 in a variety of ways. This is particularly important for a surgeon, because it is often only during the operation that it can definitively determine how the spinal implant must be geometrically designed in order to bring about optimal supportive function in the spinal column. In an advantageous embodiment, in a composite spinal implant 22 also a segment 1 be removed again and replaced with another, if it should show that the assembled spinal implant 22 For example, not the optimal supporting function guaranteed, because the multipart spine implant 22 For example, it is too short.

Claims (15)

Spine implant ( 1 ) consisting of a segment extending in a longitudinal direction (L) ( 1a ) with perpendicular to the longitudinal direction (L) extending frontal boundary surfaces ( 6 . 7 ), which with a groove profile ( 8th . 9 ), wherein the segment on at least one frontal boundary surface ( 6 . 7 ) an opening ( 10 ), and wherein a connecting portion ( 16 ), starting from the opening ( 10 ), in the longitudinal direction (L) in the interior of the segment ( 1a ), wherein the connecting portion ( 16 ) for receiving a coupling part ( 17 ) is configured. Spine implant ( 1 ) according to claim 1, characterized in that the connecting portion ( 16 ) Part of a latching device ( 21 . 21a ), which is designed in particular as an edge or protruding nose. Spine implant ( 1 ) according to one of the preceding claims, characterized in that the longitudinally extending (L) connecting portion ( 16 ) at the end of which a stop ( 16b ) having. Spine implant ( 1 ) according to one of the preceding claims, characterized in that, starting from each of the two frontal boundary surfaces ( 6 . 7 ), one connecting section each ( 16 ) into the interior of the segment ( 1a ), wherein the two connecting sections ( 16 ) straight, and each other at an obtuse angle α. Spine implant ( 1 ) according to one of the preceding claims, characterized in that the connecting section ( 16 ) at least one slot-like breakthrough ( 11 ), which up to the outside of the segment ( 1a ) runs. Spine implant ( 1 ) according to one of the preceding claims, characterized in that it consists of a plastic. Spine implant ( 1 ) according to claim 6, characterized in that these bores ( 13 ) containing metal body ( 22 ) having. Spine implant ( 1 ) according to claim 7, characterized in that on the frontal boundary surface ( 6 . 7 ) at least three mutually spaced, in the longitudinal direction (L) extending bores ( 13 ), which metal bodies ( 22 ) contain. Kit for a multipart spine implant ( 22 ) comprising at least two spinal implants ( 1 ) according to one of the preceding claims, and comprising an engagement in the connecting portion ( 16 ) configured coupling part ( 17 ). Kit according to claim 9, characterized in that the coupling part ( 17 ) Part of a latching device ( 21 . 21b ), that the connecting portion is part of a latching device ( 21 . 21a ), and that the latching device ( 21 ) is configured such that the coupling part ( 17 ) and the connecting section ( 16 ) with latching latching device ( 12 ) is held mutually non-displaceable in the longitudinal direction (L). Kit according to claim 9 or 10, characterized in that the coupling part ( 17 ) is designed tube-like. Kit according to one of claims 9 to 11, characterized in that the coupling part ( 17 ) is designed elastic. Kit according to one of claims 9 to 12, characterized in that the segment ( 1a ) a slot-like breakthrough ( 11 ), and that the latching device ( 21 ) in terms of breakthrough ( 11 ) is arranged that one over the breakthrough ( 11 ) on the coupling part arranged underneath ( 17 ) force the connection of the latching device ( 21 ) releases. Kit according to one of claims 9 to 13, characterized in that the coupling part ( 17 ) a breakthrough ( 19 ), and that the breakthrough ( 19 ), when the coupling part ( 17 ) in the connecting section ( 16 ) is engaged, above the frontal boundary surface ( 6 . 7 ) is arranged. Kit according to one of claims 9 to 14, characterized in that the coupling part ( 17 ) Part of a segment ( 1a ).