• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a screw (1), in particular bone screw, with a head (16), a shank (2) and a tip (15). The screw (1) has on a head side (3) a recess (4) with a contour (5). The screw (1) is provided in the recess (4) with a placement post (6) which is connected via a predetermined breaking point (7) with the screw (1). A counter contour of a tool can be brought into operative connection with the contour (5) of the recess (4) after the breaking of the predetermined breaking point. The predetermined breaking point (7) is arranged within the recess (4) so that after removal of the Einbringpfostens (6) a torque transmission between the tool and the screw (1) on the contour (5) and counter contour is possible. Likewise, the invention relates to a solder from a screw and a tool according to the invention as well as a production method for a screw according to the invention.
    公开号:CH709980A2
    申请号:CH01230/14
    申请日:2014-08-15
    公开日:2016-02-15
    发明作者:Mark E. Shaw；Peter Scheuble；Marc Ammann；Herbert Polzhofer
    申请人:Medartis Holding Ag；
    IPC主号:
    专利说明:

    The invention relates to screws with a placement post and method for producing screws with a placement post according to the preamble of the independent claims.
    The invention will be described for the sake of simplicity with reference to bone screws. However, this should by no means be understood as limiting. The inventive screws can also be used in other areas in which screws are needed.
    Screws are used where items are to be fixed together. For example, bone parts are fixed after fracture with bone screws. Often bone plates are also used, which are fixed with the help of screws to the bone.
    When screwing in screws there is a risk that the screw is screwed in so tightly that parts of the screw or bone are damaged. As a result, it may happen that the function of the screw is no longer guaranteed. In addition, the drive can be damaged, whereby a removal of the screw by rotation can no longer be ensured. This can happen even in a machine recess, in which the torque increase is less or not noticed by the user.
    WO 97/27 812 proposes to provide a bone screw, which is present with a screwing tool as a unit. The screwing tool has a shaft which is connected to a screw head. In the connection region between the head and the shaft a predetermined breaking point is formed. This unit is screwed into the bone. During screwing, the torque acting on the predetermined breaking point increases. When the screwing depth is reached, the torque is so great that the screw body breaks off from the shaft at the predetermined breaking point.
    A part of the insertion tool remains connected to the screw head. The breakage can be rough and irritate or damage surrounding tissue. In addition, the fracture contour prevents a conventional boring tool can be inserted into the screw head when the screw is to be released again. To remove the screw, therefore, a special tool is needed. Such special tools are on the one hand very expensive, on the other hand they are not always available at the doctors specialized in explantations.
    It is therefore the object of the present invention to provide a screw which prevents the disadvantages of the known prior art. In particular, it is the object of the present invention to provide a screw in which the break point can not damage the surrounding tissue and which is easily detachable again.
    According to the invention the problem is solved according to the features of the independent claims. In this case, a screw, in particular a bone screw, proposed with a head, a shank and a tip. The screw has a recess on the head side with a contour. A mating contour of a tool can be brought into operative connection with the contour of the recess. The screw is also provided in the recess with a Einbringpfosten. In this case, the placement head is connected via a predetermined breaking point with the bone screw. The predetermined breaking point is disposed within the recess so that after breakage and removal of the Einbringpfostens a torque transmission between the tool and the screw on the contour and counter contour is possible.
    The screw tip generally describes the opposite end of the head side of the screw. The screw tip does not necessarily have to be pointed, but may e.g. also be rounded or flattened.
    The head of the screw generally describes an end piece of the screw which has the recess. The screw head does not necessarily have to be designed as a cross-sectional widening with respect to the shaft. The shaft and the head may also have the same or even a smaller cross section.
    The shank of the screw is at least partially provided with a thread. A pitch of the thread is selectable depending on the function of the screw. It is also possible that the screw has a thread with multiple pitches. The thread preferably extends into the tip. The thread can be self-drilling or not self-drilling.
    The contour of the recess is formed so that it allows torque transmission with the mating contour of the tool. Preferably, the contour is formed as an inner contour and the mating contour as an outer contour.
    Alternatively, it is conceivable that the contour is formed as an outer contour. The contour is formed, for example, as a pin in the recess. The counter contour can be formed in this embodiment as an inner contour, which is slipped over the pin.
    Within the recess, the screw is connected via a predetermined breaking point with a placement post. The connection is formed directly or indirectly via the predetermined breaking point.
    As a direct connection is understood, if the predetermined breaking point is the only connecting piece between placement post and screw.
    As an indirect connection is understood, if the connection only over at least one other part, preferably a post top, comes off.
    As a post tip is understood in the present case an end of the Einbringpfostens, which can be separated by breaking the predetermined breaking point from the rest of Einbringpfosten.
    The proposed screw can be screwed in via the placement post. During driving in torque increases. Once a certain torque is reached, the placement post breaks at the predetermined breaking point. As a result, at least a part of the introduction post, which points from the predetermined breaking point in the direction of the head side, is released from the screw.
    Preferably, the breakage of the predetermined breaking point takes place before the end position of the screw is reached. About the contour of the recess, the screw can then be rotated with the tool in the end position.
    Alternatively, the unit insertion post screw is designed so that the predetermined breaking point breaks as soon as the screw has taken its final position.
    The predetermined breaking point prevents it, that too much torque arises. By preventing the torque from becoming too great, it prevents the bone and / or the screw (for example, the contour of the screw) from being damaged or any plate attached to the screw from being damaged. This will ensure that the screw can perform its fixation task. Furthermore, it is ensured with an undamaged contour that the screw is easily releasable once the fixation is no longer needed.
    Alternatively, the breaking point can be broken by breaking (bending moment) instead of twisting (torsional moment). This is preferably done before an end position of the screw is achieved. The end position can then be achieved in turn via the contour of the recess and the mating contour of the tool.
    The tool can, as previously described, serve to bring the screw in the end position. The tool also serves to loosen the screw, e.g. when the fixation is no longer needed. For this purpose, a torque transmission between the mating contour of the tool and the contour of the recess is necessary. The predetermined breaking point between the screw and placement head is sunk within the recess so that after breaking at the predetermined breaking point and a distance of the aborted end of the Einbringpfostens torque transmission between the contour of the recess and the mating contour of the tool is possible.
    The predetermined breaking point is therefore arranged sunk against the head side of the screw, in particular, the predetermined breaking point is sunk by more than 50% of a length of the recess, particularly preferably the predetermined breaking point is approximately at a level of a base of the recess, preferably exactly on the level the base of the recess, arranged. The predetermined breaking point is arranged inside the screw. As a result, surrounding tissue is not irritated by the breakage point after breaking the predetermined breaking point, whereby irritation and / or damage to the tissue is prevented. In addition, the contour is accessible to the tool.
    Preferably, the predetermined breaking point is arranged on the screw tip associated side of the contour. Such an arrangement has the consequence that the entire contour is not covered by breakage of the predetermined breaking point and removal of the Einbringpfostens of the predetermined breaking point and / or the possible post tip. As a result, the entire contour for the mating contour of the tool is freely accessible. This allows a good torque transmission between the tool and screw. Furthermore, in such an arrangement, the predetermined breaking point is separated from the head side of the screw at least over the entire length of the contour. The predetermined breaking point is thus in no contact with the surrounding tissue.
    Preferably, the recess subsequently to the contour against the screw tip towards an opening for mounting the Einbringpfostens. Screws with such an opening are preferably used in connection with placement posts, which are indirectly connected via the predetermined breaking point. The post tip can be mounted in the opening. The opening is preferably formed with a smaller diameter than the recess with the contour. The opening preferably has a different contour than the contour of the recess. The predetermined breaking point is preferably at the transition between the opening for mounting the Einbringpfostens and the contour, i. approximately at the level of the base of the recess, arranged.
    The predetermined breaking point may also be within the aperture, i. below the level of the base of the recess, be arranged.
    Alternatively, the predetermined breaking point at the lower end of the recess is formed with a contour. As a result, the contour is still largely uncovered and torque transmission between the tool and the screw is still possible.
    Cannulated screws are also conceivable in connection with the present invention. In this case, a through hole is formed in the screw. Cannulated screws are conceivable for screws with or without an opening for mounting the placement post. The passage opening preferably has a smaller diameter than the recess and the opening for mounting the Einbringpfostens. Alternatively, the opening for mounting is part of the passage opening. By cannulation, for example, the screw may be inserted over a previously set bone wire (e.g., K-wire).
    Preferably, the predetermined breaking point as material weakening with reduced Torsionsbruch- and Biegebruchmoments, preferably in the form of a constriction formed. The predetermined breaking point is thereby formed weaker than the placement post, at least on a pointing in the direction of the head side and adjacent to the predetermined breaking point section. Preferably, the predetermined breaking point is weaker than the entire remaining placement post. About dimension and / or shape and / or material of the predetermined breaking point can be determined at which torque breaks the predetermined breaking point.
    The predetermined breaking point is preferably formed of the same material, preferably titanium, titanium alloy, implant steel, resorbable metallic or non-metallic material, such as the surrounding locations of the Einbringpfostens.
    The predetermined breaking point can come about, for example, by a machining process.
    Alternatively, the predetermined breaking point may be formed of a different material. For example, it is conceivable that the introduction post is made largely of metal except for the predetermined breaking point, but the predetermined breaking point consists of plastic, an adhesive, another metal or another material which has a reduced torsional fracture and / or bending moment. The predetermined breaking point can be formed in this case without constriction.
    Preferably, the placement head is provided in one piece via the predetermined breaking point with a post tip. The post tip can be mounted preferably in the opening for mounting the Einbringpfostens.
    One-piece design means that the placement post with predetermined breaking point and post tip is made in one piece. The post tip can be mounted in the recess, preferably in the opening, that a torque for screwing the screw on the post tip on the screw is transferable. In this case, the post tip preferably has a post tip contour for torque transmission to a post tip counter contour. The post tip preferably remains in the screw after fracture.
    A one-piece design is easy to produce, since no parts have to be joined together. The post tip contour and the predetermined breaking point are preferably incorporated in the placement post.
    In an alternative embodiment, the placement post is formed separately from the post tip. The placement post can be connected to the post tip via the predetermined breaking point. The post tip preferably has a post tip contour for torque transmission via a post tip counter contour in the recess, preferably in the opening subsequent to the contour of the recess.
    In this embodiment, the post tip is connected to the placement post. The post tip may e.g. welded, glued, screwed or pressed. The predetermined breaking point may preferably arise from the fact that the connection point between the introduction post and the post tip has a reduced torsional fracture and / or bending moment compared to the post tip and the remaining insertion post.
    Preferably, the predetermined breaking point is designed so that it breaks at a tightening torque which is less than or equal to the usual torque of this screw.
    Typically, in medical applications when Eindrehvorgang the shank of the screw this tightening torque is not reached yet. It is usually achieved as soon as the screw has reached its end position, that is usually when a head or an end of the screw hits a bone plate or the bone. At this moment, the bone and / or the screw are not damaged yet. The predetermined breaking point is therefore designed so that on the one hand an end position of the screw is achieved by screwing in with the placement post, on the other hand, no damage to the bone and / or on the screw occur.
    Alternatively, depending on the application higher or lower torques are conceivable.
    In a preferred embodiment, the screw and the Einbringpfosten are integrally formed. The screw and the placement posts are made in one piece. The predetermined breaking point preferably forms a transition from the screw to the placement post.
    In an alternative embodiment, the insertion post with the post tip is pressed into the opening for mounting the placement post.
    In this case, the placement post is preferably pressed with one-piece post tip into the opening. About the post tip a moment transfer from the insertion post on the screw is possible.
    By pressing a stable connection can be made, which does not require additional fasteners.
    In a further alternative, preferred embodiment, the introduction post is screwed into the opening. The post tip is at least partially provided with a thread which can be screwed into a mating thread of the opening. As a result, the post tip is arranged in the opening after screwing. In the case of a cannulated screw, however, this opening may be formed as a through hole with at least a partial thread.
    A screw connection represents a stable, detachable connection, which does not require additional connecting elements. The predetermined breaking point is preferably formed directly adjacent to the thread of the post tip. The tightening torque for the threaded connection is chosen to be so high that it is higher than the insertion or removal torque for the screw shaft, however, smaller than the tightening torque of the predetermined breaking point. Thus, loosening of the screw without destroying the predetermined breaking point during implantation is possible, e.g. if it is determined that the screw is not yet in the optimum position. Depending on the requirements and application, an additional connection type, preferably a press connection, can be used to increase the tightening torque. The screwed insertion post is preferably additionally compressed from the outside.
    Alternatively, other compounds would be possible, such as e.g. Welding, gluing, crimping or shrinking the placement post into the opening. Depending on the type of connection, the connection point can represent the predetermined breaking point.
    A combination of the above-described connection possibilities can also be used.
    Preferably, the contour of the recess as a slot, Phillips, internal polygon, Innenvielrund or Philipps, particularly preferably as a hexagon or hexalobular ("Torx"), i. as a standardized or standardized contour. Both hexagon and hexalog round form reliable ways of torque transmission.
    With these preferred contours no special tool is needed to loosen the screw again or tighten after breaking the breaking point. Since special tools are usually expensive to manufacture - and to buy - a solution with contours such as hexagon or hexalobular is more cost effective. In addition, special tools are not always available and tightening, and especially the turning out during explantation in a clinic / practice that does not have the appropriate tools in this case would not or only with difficulty.
    Preferably, the Einbringpfosten additionally has a Einbringkontur for torque transmission of a commercial, (medical) drill.
    The Einbringkontur can also be designed as a handle, such as known from screwdrivers.
    Alternatively, no special additional contour is formed and the torque transfer to the placement post takes place without additional contour, e.g. purely frictionally over the jaw chuck of a drill instead.
    Preferably, the various parts of the Einbringpfostens and the screw of titanium, titanium alloy, implant steel, resorbable metallic or non-metallic material.
    In particular, the post tip may consist of resorbable material. The post tip preferably remains in the screw after breaking the predetermined breaking point. If the screw is used as a bone screw, the post tip therefore remains in the body. If the post tip still partially covers the contour of the recess, the whole contour is released again through absorption. As a result of this, the tool with the mating contour for removing the screw during the explantation can interact better with the contour. As a result, a loosening of the screw is facilitated.
    Preferably, the placement post contains a product-specific identification, preferably a Lotnr, a barcode or a logo. The product-specific marking can be read out and / or stored after breaking the predetermined breaking point.
    By marking the implanted screw in knowledge of the separated placement post in retrospect is identified.
    Another aspect of the invention relates to a set with at least one screw according to the invention and a tool which has a counter contour of the recess complementary to the contour of the screw.
    Another aspect of the invention relates to a set with at least one bone plate and at least one screw according to the invention as described above.
    The screw (s) preferably serves to fix the bone plate (s) on the bone. The screw (s) and the bone plate (s) may have a blocking contour or a thread, whereby the screw can be locked in the plate. Details of the blocking are e.g. in EP 1608 278 A1, the contents of which are incorporated herein by reference.
    Preferably, this set additionally comprises at least one tool with a mating contour complementary to the contour of the recess. With the tool, for example, the screw can be tightened even more after breaking off the placement post and / or loosened and removed again after healing of a bone fracture.
    Furthermore, the invention relates to a method for producing a screw with a placement post. This method comprises the step of providing a screw body with a screw head, shank and screw tip and with a placement post integral with the screw. The screw body has a recess with a contour for a tool. The placement head is connected via a predetermined breaking point with a post tip, wherein the predetermined breaking point is disposed within the recess.
    Furthermore, the invention relates to a method for producing a screw with a placement post, which comprises the following steps:Providing a screw body with a screw head, shank and screw tip, wherein the screw body has a recess with a contour and subsequent opening for receiving the placement post,Provision of a placement post, which is connected via a predetermined breaking point with a post tipAssembly of the placement post and the screw body via the post tip and the opening for receiving the placement post.
    In a preferred method, the introduction post is screwed into the screw body. Preferably, the placement post is additionally pressed from the outside with the screw body.
    Alternatively, the insertion post can also be pressed only in the screw body.
    Alternatively, the placement post can be glued, crimped, shrunk, welded, or joined using another suitable method.
    Preferably, the placement head is connected to the screw body by a combination of the described methods.
    In an alternative preferred method, screw and placement posts are integrally formed, i. produced without joining process.
    Further advantageous embodiments of the invention will become apparent from the following description of the embodiments in combination with the schematic figures. They show schematically:<Tb> FIG. 1a / b: A longitudinal section through a first embodiment of a screw according to the invention.<Tb> FIG. 2: <SEP> A longitudinal section through an alternative embodiment of a screw according to the invention.<Tb> FIG. 3: A longitudinal section through a further embodiment of a screw according to the invention.<Tb> FIG. 4: A longitudinal section through a further embodiment of a screw according to the invention.<Tb> FIG. 5a / b / c: <SEP> Detail views of inventive placement posts with different predetermined breaking points.<Tb> FIG. 6: <SEP> a screw according to the invention after twisting / breaking off the placement post with tool.<Tb> FIG. 7: <SEP> a longitudinal section through a first embodiment of a screw according to the invention after twisting off / aborting the placement post with a tool.<Tb> FIG. 8 shows a longitudinal section through an alternative embodiment of a screw according to the invention after twisting off / breaking off the placement post with a tool.<Tb> FIG. 9: A cross-section through a screw head of a screw according to the invention with insertion posts.
    1a and 1b show a longitudinal section through a first embodiment of a screw according to the invention 1. The screw 1 has a shaft 2 which is provided with a thread 14. The screw 1 also has a tip 15 and a screw head 16 opposite the tip 15. The screw head 16 has a head side 3. A recess 4 is formed on the head side 3. Subsequently to the recess 4, an opening 8 for receiving a post tip 9 of a Einbringpfostens 6 is present. The opening 8 for receiving the post tip 9 has an internal thread (not shown). The tip 9 has an external thread (not shown), which can be screwed into the internal thread of the opening 8.
    In Fig. 1a, the post tip 9 is connected via a predetermined breaking point 7 with a post shank 20 of the Einbringpfostens 6. The post shaft 20 is shown only partially in FIGS. 1a and 1b. The predetermined breaking point 7 is formed as a constriction between the tip 9 and the post shank 20. The placement post 6 is therefore indirectly connected via the predetermined breaking point 7 with the screw 1. The indirect connection of the post tip and screw can be made via a conical or cylindrical thread, by pressing, gluing, shrinking, crimping or other joining methods or as a combination of several of these joining methods. In a compound which is e.g. only by pressing, gluing, shrinking or crimping, the threads can also be omitted.
    When screwing the screw 1, the torque increases. The predetermined breaking point 7 is designed so that it breaks before reaching the tightening torque. In Fig. 1b, the post shank 20 of the Einbringpfostens 6 is broken off at the predetermined breaking point 7 of the post tip 9. The post tip 9 thereby has a break point 18. The break point 18 is located approximately at the level of the base surface 23 of the recess 4. Thus, the break point 18 does not come into contact with surrounding tissue, whereby irritation of this tissue is prevented.
    The recess 4 has a contour 5. The contour is formed as a hexalobular. After removal of the post shaft 20 of the placement post 6, the contour 5 is exposed. A tool 12 (see, e.g., Fig. 6) having a mating mating contour 13 (see, e.g., Fig. 6) may be operatively connected to the contour 5. With the aid of the tool 12, the screw 1 can be screwed into an end position. The screw 1 can also be turned out with the aid of the tool 12 as soon as the screw 1 is no longer needed.
    FIG. 2 shows an alternative embodiment of the screw 1 according to the invention. The placement post 6 and the screw 1 are formed in one piece. Both parts are made of one piece of material. The breaking point 7 forms directly the connection point between the placement post 6 and the screw 1. After breaking the Einbringpfostens 6 at the predetermined breaking point 7, a break point 8 will again be approximately at the level of the base 23 of the recess 4 (not shown). The recess in turn has a contour 5, via which with the aid of the tool 12 (not shown) after breaking off the predetermined breaking point 7, the screw 1 can be further screwed or turned.
    FIG. 3 shows a further embodiment of a screw 1 according to the invention. The screw 1 and the placement head are connected indirectly via the predetermined breaking point 7, as in the embodiment of FIGS. 1a and 1b. The screw 1 is cannulated in this embodiment. The cannulation 19 extends over the entire shaft 2 of the screw 1. Also, the placement post has a cannulation 21. The cannulas 19, 21 are in fluid connection with screwed insertion post 6. This provides a continuous cannulation.
    Within the cannulations 19, 21 is a wire 22, a so-called Kirschner or K-wire. Such wires 22 are used in various orthopedic and other operations. The wire 22 is inserted into the bone. About the cannulation 19, 21, the screw 1 can be introduced via the wire 22 into the bone. The wire 22 serves as a guide. FIG. 4 shows a further embodiment of a screw 1 according to the invention. As in FIG. 3, a cannulation 19 is present in the screw 1. The placement post 6 and the screw 1 are integrally formed as shown in FIG. The cannulation 19 is formed continuously by the screw 1 and the placement post 6. Within the cannulation 19, in turn, a wire 22 is shown. The screw 1 was again introduced via the cannulation 19 and the wire 22.
    FIGS. 5a, b, c show detailed views of placement posts 6. The placement posts 6 have post tips 9 and post stems 20, which are connected to one another via predetermined breaking points 7.
    In the embodiment shown in Fig. 5a, the predetermined breaking point 7 has been realized as a material variation. The predetermined breaking point 7 is therefore formed of a fracture weaker material than the post tip 9 and the post shank 20. The post tip 9 and the post shaft 20 are e.g. made of titanium, the breaking point, e.g. made of a biocompatible plastic, which glues the two parts together. As a result, the predetermined breaking point 7 will break at a certain torque.
    In the embodiment shown in Fig. 5b, the predetermined breaking point 7 is formed as a constriction. The constriction has come about through material removal at this point. The post tip 9 and the post shaft 20 are integrally formed.
    In the embodiment shown in Fig. 5c, the predetermined breaking point is formed by a compound with reduced resistance torque against bending and torsion. Such compounds may be, for example, welded joints. Alternative connections include compression joints, shrink joints, crimp joints, glue joints and other suitable joints, as well as combinations of joints.
    Fig. 6 shows an inventive screw 1 after removal of the post shaft 20 of the placement post 6 (not shown). In the recess 4 (not visible in Fig. 6), a tool 12 is inserted. In this case, a mating contour 13 of the tool 12 is in operative connection with the contour 5 (not visible in FIG. 6) of the recess 4 (not visible in FIG. 6). The screw 1 can be screwed in further by the tool 12. Once the screw is no longer needed or needs to be explanted, the screw can be loosened using the tool 12.
    The contour 5 (not visible) of the recess is e.g. designed as a hexalobular. This common contour ensures that the screw 1 with a standardized / standardized tool 12 can be further screwed or turned.
    The tool 12 has at one of the mating contour 13 opposite end a connecting portion 17. The connecting portion 17 serves to connect the tool 12 with a driving aid (not shown) such as a drill or a screwdriver handle.
    Fig. 7 shows a longitudinal section of the screw 1 of Fig. 1a, b, after the post shaft 20 of the Einbringpfostens 6 (not shown) has been removed and the tool 12 has been introduced with the mating contour 13 in the recess 4.
    Fig. 8 shows a longitudinal section of the screw 1 of Fig. 3 after the post shaft 20 of the Einbringpfostens 6 (not shown) has been removed and the tool 12 has been introduced with the mating contour 13 in the recess 4.
    Fig. 9 shows a cross section through a screw head 16 at the level of the predetermined breaking point 7 of an inventive screw 1 with Einbringpfosten 6. The recess 4 of the screw head 16 has a contour 5 in the form of a hexalobular. After removal of the Einbringpfostens 6, the screw 1 on the contour 5 with the matching tool 12 (not shown in Fig. 9) further screwed or turned.
    权利要求:
    Claims (21)
    [1]
    1. screw (1), in particular bone screw, with a head (16), a shank (2) and a tip 15, which on a head side (3) has a recess (4) with a contour (5) and wherein the screw (1) in the recess (4) with a Einbringpfosten (6) is provided, which is connected via a predetermined breaking point (7) with the screw (1), wherein a mating contour (13) of a tool (12) after breaking the predetermined breaking point with the contour (5) of the recess (4) can be brought into operative connection,characterized,that the predetermined breaking point (7) within the recess (4) is arranged so that after removal of the Einbringpfostens (6) a torque transmission between the tool (12) and the screw (1) on the contour (5) and counter contour (13) possible is.
    [2]
    2. Screw (1) according to claim 1, wherein the predetermined breaking point (7) sunk against the end face (3) of the screw 1, in particular at the level of the base 23 of the contour (5) is arranged.
    [3]
    3. Screw (1) according to any one of claims 1 and 2, wherein the recess (4) subsequently to the contour (5) has an opening (8).
    [4]
    4. Screw (1) according to one of claims 1 to 3, wherein the screw (1) and the placement head (6) have a cannulation (19, 21).
    [5]
    5. Screw (1) according to one of claims 1 to 4, wherein the predetermined breaking point (7) is designed as a material weakening in the form of a constriction.
    [6]
    6. Screw (1) according to one of claims 1 to 5, wherein the placement head (6) integrally over the predetermined breaking point (7) with a post tip (9) is provided, wherein the post tip (9) has a contour (11) for a torque transmission has a mating contour (10) in the recess (4) of the screw (1).
    [7]
    7. screw (1) according to one of claims 1 to 6, wherein the introduction post (6) is formed separately from the post tip (9) and via the predetermined breaking point (7) with the post tip (9) is connectable or connected, wherein the post tip (9) has a contour (11) for a torque transmission via a mating contour (10) in the recess, preferably in the opening (4) of the screw (1).
    [8]
    8. screw (1) according to any one of the preceding claims, wherein the predetermined breaking point (7) is designed so that it breaks at a torque which is smaller than the torque of the bone.
    [9]
    9. screw (1) according to any one of the preceding claims, wherein the introduction post (6) and the screw (1) are integrally formed.
    [10]
    10. Screw (1) according to one of claims 1 to 9, wherein the placement head (6) is screwed into the blind hole (8) and preferably additionally pressed.
    [11]
    11. Screw (1) according to one of claims 1 to 9, wherein the introduction post (6) in the blind hole (8) of the recess (4) is pressed.
    [12]
    12. screw (1) according to any one of the preceding claims, wherein the contour (5) of the recess (4) is designed as a hexagon or hexalobular, square, Phillips, etc.
    [13]
    13. Screw (1) according to any one of the preceding claims, wherein the screw (1) and the placement posts made of a biocompatible material from the list titanium, titanium alloys, steel, plastic, resorbable metal or resorbable plastic.
    [14]
    14. Screw (1) according to one of the preceding claims, wherein the introduction post (6) contains a product-specific identification, preferably a Lotnr., A barcode or logo, which are read after the break of the predetermined breaking point (7) and / or stored can.
    [15]
    15. Set, with at least one screw (1) according to any one of claims 1-15 and a tool (12) having a contour (5) of the recess (4) complementary counter-contour (13) of the screw (1).
    [16]
    16 set, with at least one tool (12) having a mating contour (13) to the contour (5) of the recess (4) of the screw (1) and at least one screw (1) according to any one of claims 1-15.
    [17]
    17. The kit according to claim 16, which additionally comprises a bone plate.
    [18]
    18. A method for producing a screw (1) with a placement post (6), which comprises the following step:- Providing a screw body (1) with a screw head (16), shank (2) and screw tip, wherein the screw body (1) has a recess (4) with a contour (5) for a tool (12) and one in one piece with the Screw connected Einbringpfostens (6), which is connected via a predetermined breaking point with a post tip, wherein the predetermined breaking point is disposed within the recess (4).
    [19]
    19. A method of manufacturing a screw (1) with a placement post (6) comprising the steps of:- Providing a screw body (1) having a head, a shaft (2) and a tip, wherein the screw body (1) has a recess (4) with a contour (5) and subsequent opening (8).- Provision of a post (6) which is connected via a predetermined breaking point (7) with a post tip (9)- Assembling the post (6) and the screw body (1) via the post tip (9) and the opening (8).
    [20]
    20. The method of claim 19, wherein the post (6) screwed into the screw body (1) and preferably additionally compressed.
    [21]
    21. The method according to claim 19, wherein the post (6) in the screw body (1) is pressed, is.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP1096892B1|2004-11-10|Osteosynthesis screw, especially for application by a translaminar vertebral screw
    EP1175871B1|2009-11-18|Locking nail
    DE102005021879B4|2007-04-12|Orthopedic anchoring element and osteosynthesis device
    EP1972297B1|2015-10-21|Combination of an Abutment and a two-part screw.
    EP2440147B1|2013-08-14|Surgical instrument with bone screw
    EP2564799B1|2014-04-23|Surgical metatarsal compression nail
    EP1757246A1|2007-02-28|Superstructure for dental implant
    EP0613657A1|1994-09-07|Fixation pin and driving tool
    EP0172130A2|1986-02-19|Screw for orthopaedic fixation
    DE102005021885A1|2006-11-16|Device for introducing an anchor element together with thread in a bone
    DE102008006094B4|2014-05-08|Orthodontic screw implant and system of orthodontic screw implant and archwire
    CH666176A5|1988-07-15|DEVICE FOR TREATING A BONE AND NAIL FOR SUCH A DEVICE.
    WO2007048267A1|2007-05-03|Thread-forming screw
    EP2281527A1|2011-02-09|Adapter for transmitting torque to the assembly section of a dental implant
    EP3177223B1|2019-10-16|Screw with insertion post
    DE19850097C2|2003-02-27|Method and device for handling implant-supported dentures
    DE102017101348A1|2018-07-26|Axis accurate screwdriver
    EP1982665B1|2012-06-13|Compression screw with wire element
    DE102013105744A1|2014-12-04|Implantation screw and tool of an implantation set with relative rotation forcing
    DE102006007541A1|2007-08-30|Implant for placing in toothless lower or upper jaws for dental prosthesis attachment, has micro thread extending directly to upper end of outer circumference of implant body, which returns inwards at upper end of micro thread
    DE4332075B4|2006-10-05|Screw implant for fixing dentures
    DE202013105409U1|2013-12-04|Screw in particular bone screw and a tool for this
    DE102013113135A1|2015-05-28|Screw in particular bone screw and a tool for this
    AT519474B1|2018-07-15|wood screw
    DE202005002133U1|2005-07-07|Removable tooth implant, comprising conical bone screw with threaded central bore
    同族专利:
    公开号 | 公开日
    JP6581657B2|2019-09-25|
    CN106572872A|2017-04-19|
    AU2015299098B2|2020-02-20|
    US10582959B2|2020-03-10|
    BR112017002062A2|2017-12-26|
    AU2015299098A1|2017-03-16|
    MX2017001663A|2017-04-27|
    EP3177223A1|2017-06-14|
    DE202014006372U1|2014-08-22|
    CH709980A8|2016-07-15|
    JP2017523895A|2017-08-24|
    US20170325862A1|2017-11-16|
    ES2765459T3|2020-06-09|
    WO2016020329A1|2016-02-11|
    CN106572872B|2020-05-29|
    EP3177223B1|2019-10-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4323434C1|1993-07-13|1995-02-16|Arcus Elektrotech|Shear bolt|
    DE19603410C2|1996-01-31|1999-02-18|Kirsch Axel|Screw for insertion into a bone and unscrewing tool therefor|
    JP3035567B2|1997-01-31|2000-04-24|洋司 村嶋|Cannulated screw|
    FR2768781B1|1997-09-25|2000-01-07|Groupe Lepine|SET OF SCREWS AND CHUCK CONNECTED TO EACH OTHER THROUGH A BREAKABLE BRIDGE|
    FR2781998B1|1998-08-07|2000-11-10|Hassan Razian|PROSTHETIC ELEMENT, IMPLANTABLE INTO A BONE, WITH SEPARABLE HANDLING HEAD|
    US5971987A|1998-09-18|1999-10-26|Ethicon, Inc.|Biocompatible absorbable polymer fastener and driver for use in surgical procedures|
    US6964665B2|2000-12-29|2005-11-15|Thomas James C|Vertebral alignment system|
    US6723099B1|2001-11-08|2004-04-20|Biomet, Inc.|Three sided tack for bone fixation|
    US20030125749A1|2001-12-27|2003-07-03|Ethicon, Inc.|Cannulated screw and associated driver system|
    WO2004086990A1|2003-04-03|2004-10-14|Medartis Ag|Housing for a locking element and locking element|
    US7354442B2|2003-05-05|2008-04-08|Warsaw Orthopedic, Inc.|Bone anchor and methods of using the same|
    JP2006006822A|2004-06-29|2006-01-12|Takiron Co Ltd|Screw for bone of living body|
    US7846167B2|2005-11-07|2010-12-07|Biomet Microfixation, Llc|Driver assembly and fastener apparatus|
    US20070218750A1|2006-03-17|2007-09-20|Nexa Orthopedics, Inc.|Snap-off screw with recessed breakoff area|
    US20070270859A1|2006-04-28|2007-11-22|Sdgi Holdings, Inc.|Orthopedic screw with break away drive|
    DE102009003177B4|2009-05-18|2014-02-13|Peter Lazic Gmbh|Implant for fixing adjacent bone plates|
    DE102010016812A1|2009-06-08|2011-03-17|Z.-Medical Gmbh & Co. Kg|bone screw|
    WO2011043805A1|2009-10-05|2011-04-14|Roger Jackson P|Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit|
    CN201642299U|2010-05-24|2010-11-24|范存义|Self-drill break-away fragment fixation pin|
    DE102011001264A1|2011-03-14|2012-09-20|Aesculap Ag|Surgical K-wire and surgical screw system|
    DE102012104973A1|2011-09-22|2013-03-28|Zbigniew Combrowski|Surgical instrument|
    FR2983396B1|2011-12-05|2014-06-27|Fournitures Hospitalieres Ind|OSTEOSYNTHESIS DEVICE, IN PARTICULAR FOR CORRECTING A DETECTION OF A TOE AND ANCILLARY FOR THE PLACEMENT OF THE SAME|
    EP2910210B1|2012-06-18|2018-03-07|Biedermann Technologies GmbH & Co. KG|Bone anchor|
    AT513515B1|2013-03-06|2014-05-15|Arnetzl Gerwin Vincent Dr|Screw device for a cap screw for attaching an abutment for a tooth structure to an implant body|CN104791353A|2015-04-02|2015-07-22|张琦|Lug screwing rod|
    WO2020152783A1|2019-01-22|2020-07-30|オリンパス株式会社|Ultrasonic treatment tool and vibration transmission member|
    CN109899365B|2019-03-13|2021-02-26|博瑞康有限公司|Bolt|
    法律状态:
    2016-05-31| PK| Correction|Free format text: BERICHTIGUNG ERFINDER |
    2016-07-15| PK| Correction|Free format text: ERFINDER BERICHTIGT. |
    2021-02-15| AZW| Rejection (application)|
    优先权:
    申请号 | 申请日 | 专利标题
    DE202014006372.9U|DE202014006372U1|2014-08-05|2014-08-05|Screw with insertion post|
    [返回顶部]