TW201717855A - A dynamic motion plate - Google Patents

Abstract

The invention of the dynamic motion plate may comprise a plate and at least one hollow connect block, wherein said plate further include at least one fitting hole, and said inner side of fitting hole has a plurality of first rabbet; said at least one hollow connect block has at least one connective portion, wherein said at least one connective portion is at both side of said hollow connect block, and said hollow connect block uses the at least one connective portion to embed into said plurality of first rabbet, so said at least one hollow connect block is placed in said at least one fitting hole, wherein said at least one hollow connect block has a first hole, and said first hole is used to be penetrated by a plurality of locking screws; while said plurality of locking screws penetrate into said first hole and are fixed on a broken bone, the motivation of said at least one hollow connect block is limited by said at least one connective portion and said plurality of first rabbet.

Description

Dynamic sliding bone plate

This creation relates to a sliding bone plate for use in a fracture site, and in particular to a dynamic sliding bone plate.

The bone shape of each part of the human body is different and the structure is complex. If a fracture or the like occurs, the medical treatment and rehabilitation method usually requires appropriate treatment according to the bone structure of the injured part. When the fracture is near the joint When it is less suitable for plaster fixation, bone plates and bone nails are usually used as fixes for the treatment of fractures.

In the case of a tibial fracture, when a patient is subjected to high-energy trauma, such as a car accident, a strong collision, or a fall from a height; or a low-energy trauma, such as a slip or a fall, it may cause a lateral fracture of the humerus, and a lateral fracture. If the locking plate is solid, it will often be too strong to fix, but it will cause bone non-healing. If appropriate micro-motion is given at this time, it will stimulate bone healing. Other parts of the fracture can also be fractured according to the above tibia. The fixing method is fixed and fixed by dynamic sliding bone plate. However, in general, the traditional bone plate completely adheres the bone plate to the bone and relies on the friction between the bone plate and the bone to achieve the fixation effect, but the fixation method may pressurize the periosteum to cause poor blood transportation of the fracture site. It also causes slow healing or other complications in the postoperative fracture site. Although the locking plate can retain a lot of blood supply, but because the fracture can not be moved, the above-mentioned postoperative still can not restore the effect, it will also present a poor condition.

In response to the above problems, Synthes Corp. designed a Dynamic Locking Screw (DLS), which consists of a sleeve and an inner needle, wherein the sleeve is fixed in the bone. The needle is interlocked with the bone plate, and the inner needle is shaken in the sleeve to reduce or cushion the pressure exerted by the bone plate on the fracture site during the movement of the patient, and to promote the fretting of the fracture, thereby indirectly promoting the fracture site. The epiphysis grows and heals, but as the inner needle continually sways in the sleeve, the inner needle may break or bend due to constant shaking, causing the bone plate to lose its fixed fracture site.

In addition, Zimmer Corp. has developed a movable locking screw. (Motion Lock Screw), the active locking screw is not directly interlocked with the bone plate and fixed in the bone, so the movable locking screw can shake with the movement of the bone, although the screw can cause the fretting of the fracture end, but the screw is The steps are complicated when placed, and it is very difficult to remove once locked, and it is difficult for osteoporosis to achieve a fixed effect by only a single cortical bone. As can be seen from the above, the prior art uses an innovative locking screw to reduce the pressure exerted on the bone by the bone plate when the bone is active. However, if the locking screw has a problem, it will inevitably affect the function of the bone plate, so it is necessary to develop other It is suitable for the microplate of the fracture site, so that the damaged fracture is located after the operation.

In view of the above problems, an object of the present invention is to provide a dynamic sliding bone plate which, in addition to retaining the function of the original fixed bone, can also rotate or slide as the bone moves to slow down the pressure exerted by the bone plate on the bone. And using the fretting of the fracture end to stimulate the bone to produce bone healing, and the bone plate of the invention can completely not change the steps and habits of the current physician to insert the steel plate, and rely on the interlocking structure of the bone plate itself to achieve the fixation effect. Moreover, the fixing effect is not affected by the rotation or sliding function of the bone plate itself of the present invention. The bone plate of the invention can not have contact with the bone, and has a gap between the bone plate and the bone, and can also eliminate the possible complications caused by the pressure of the bone plate on the bone (such as slow fracture healing, failure of fixation, etc.) It can improve blood transport and periosteal recovery and growth in the affected area. In one embodiment, the bone plate of the present invention is in turn applicable to patients suffering from osteoporosis.

Since the prior art uses the improvement of the screw to reduce or cushion the pressure exerted by the bone plate on the fracture site when the patient is active, when the modified screw has problems (for example, screw bending, fracture, etc.), the bone plate will The function of fixing the fracture site is lost. Therefore, another object of the present invention is to solve the problems caused by the prior art. The bone plate of the present invention is a structure for improving the bone plate, so that the bone plate has the function of rotating or sliding. When the bone plate has been fixed to the fracture site through a plurality of locking screws, the bone plate still allows the broken bone of the fracture site to be slightly moved and uses the micro-motion of the fracture end to stimulate the bone to help the bone to heal.

In the first aspect of the present invention, the dynamic sliding bone plate of the present invention may comprise a plate body and at least one hollow connecting block, wherein the plate body further comprises at least one fitting hole, and at least one of the fitting holes has a plurality of inner sides. The at least one hollow connecting block has at least one connecting portion, wherein at least one connecting portion is fastened on both sides of the hollow connecting block, and the hollow connecting block is embedded in the plurality of first engaging grooves by at least one connecting portion, so that At least one hollow connecting block is disposed in at least one fitting hole, wherein at least one hollow connecting block has a first through hole, and the first through hole is used for a plurality of locking screws; when a plurality of locks are used When the fixing screw passes through the first perforation and is fixed to a broken bone, the movement of the at least one hollow connecting block is restricted by the at least one connecting portion and the plurality of first engaging grooves. Furthermore, the plate body of the present invention further has a plurality of second recessed grooves, and further has a stopper. If the movement of the hollow connecting block is to be reduced, the user can insert at least one stopper into the second slot. In order to suppress at least one moving block activity.

In a second aspect of the invention, the dynamic sliding bone plate of the present invention provides several different combinations, and the different combinations described above utilize different first groove profiles to interact with different joint shapes. Different combinations of modes are generated; through different combinations, the dynamic sliding bone plate may have only a sliding function, or may have both sliding and rotating functions; the shape of the connecting portion of the present invention may be cylindrical or elliptical. The shape of the first groove matches the aforementioned joint portion. When the joint portion has a cylindrical shape, at least one hollow joint block moves in a first groove to rotate or slide. In another implementation, the contour of the first groove matches the joint. When the joint is in the shape of an elliptical cylinder or a capsule, at least one of the hollow joint blocks is slidably moved in the first recess.

In an embodiment, when the connecting portion has a cylindrical shape, the first grooved contour for matching the connecting portion may be elliptical, circular or capsule-shaped, wherein if the contour of the first groove is elliptical or capsule-shaped At least one hollow connecting block is rotatably and slidably moved in the first recessed groove; if the contour of the first recessed groove is circular, at least one hollow connecting block is rotated in the first recessed groove activity.

In another aspect, the bone plate of the present invention also has a first pressure relief groove structure that is bilaterally symmetrical; in one embodiment, the plate body further has at least one second perforation, and the first perforation in the at least one hollow connection block The shape is the same as the second perforation. In another embodiment, in order to maintain the mobility and fixation capabilities of the bone plate of the present invention, the present invention has both first and second perforations, and the number of first perforations is the same as the number of the hollow connection blocks.

100‧‧‧Dynamic sliding bone plate

102‧‧‧ board

104‧‧‧Hollow connection block

106‧‧‧ fitting holes

106A‧‧‧First slot

108‧‧‧Connecting Department

110‧‧‧First perforation

112‧‧‧Second perforation

114‧‧‧First decompression tank

116‧‧‧Second inlay

202‧‧‧Locking screws

802‧‧‧fixed groove

804‧‧‧stops

806‧‧‧First arm

8061‧‧‧Fixed Department

808‧‧‧second arm

810‧‧‧ pull ring

B1, B2‧‧‧ broken bone

The embodiments of the present invention are illustrated by the examples in the following figures, and are not intended to limit the invention. Like reference numerals in the following drawings refer to like elements.

The first figure is a dynamic sliding bone plate according to an embodiment.

The second figure is a dynamic sliding bone plate according to another embodiment.

The third figure shows the joint of the present invention in accordance with an embodiment.

The fourth figure shows the joint of the present invention according to another embodiment.

The fifth figures (A)-(C) are schematic views showing the first groove profiles matching the cylindrical joints.

Figure 6 (A)-(B) shows an embodiment in which the bone plate is fixed to the fracture site.

The seventh panel shows an example of the application of the bone plate to a distal tibial fracture.

The eighth diagram (A) is an illustration of an embodiment for explaining the movement of the hollow connecting block.

The eighth (B) diagram is an assembly diagram for explaining a combination of a stopper and a hollow connecting block.

The eighth (C) drawing is a cross-sectional view illustrating the stopper and the hollow connecting block using an embodiment.

The embodiments of the present invention are described below by way of specific embodiments, and those skilled in the art can readily understand the utility of the present invention and its advantages by the disclosure of the present disclosure. The present invention may be applied and implemented by other specific embodiments. The details of the present invention may be applied to various needs, and various modifications or changes may be made without departing from the spirit and scope of the invention.

The present invention will be described in terms of the preferred embodiments and aspects of the invention. Therefore, the present invention may be widely practiced in other embodiments in addition to the preferred embodiments described in the specification.

The first and second figures are a dynamic sliding bone plate 100 according to an embodiment, and the dynamic sliding bone plate is further combined by a plate body 102 and at least one hollow connecting block 104, wherein the aforementioned plate body 102 is formed. Further comprising at least one fitting hole 106, and at least one of the fitting holes 106 has a plurality of first fitting grooves 106A; the at least one hollow connecting block 104 has at least one connecting portion 108 on both sides of the hollow connecting block 104, and is hollow The connecting block 104 is embedded in the plurality of first recesses 106A with at least one connecting portion 108, and the at least one hollow connecting block 104 is disposed in the at least one fitting hole 106. The at least one hollow connecting block 104 further has a first through hole 110. And the first through hole 110 is used for the plurality of locking screws 202; when the plurality of locking screws 202 pass through the first through hole and fix the bone plate of the invention to a broken bone, at least one hollow connecting block The activity is limited by at least one connection 108 and a plurality of first slots 106A. In another embodiment, the plate body 102 of the present invention further includes at least one second through hole 112, and the plurality of locking screws 202 pass through the second through hole 112 and fix the bone plate of the present invention to another broken bone. When a plurality of locking screws 202 are passed through the first through hole 110 and the aforementioned broken bone, the plurality of screws 202 can be locked by the movement of the at least one hollow connecting block 104 with the aforementioned broken bone without affecting the plurality of screws 202. In the foregoing broken bone; in addition, when a plurality of locking screws 202 are passed through the second perforation 112 and the other broken bone, the plurality of screws 202 will be locked to the other broken bone and cannot move with the other broken bone. . In an embodiment, the inner side of the at least one fitting hole 106 further has a second recess 116.

In an embodiment, the inner side of the first perforation has a first internal thread, and the plurality of locking screws 202 further comprise a screw head, a screw and a taper, wherein the screw of the plurality of locking screws 202 has An external thread, which in turn can be screwed with the first internal thread described above. In another embodiment, the at least one second through hole is also formed by the plurality of locking screws 202, wherein the inner side of the second through hole also has a second internal thread, wherein the plurality of locking screws 202 are screwed The external thread can be screwed with the second internal thread.

In one embodiment, the plate body further has a plurality of first pressure reducing grooves 114. When the dynamic sliding bone plate of the present invention is locked to the fracture site, the bone plate will apply bone pressure when the fracture site is active. The first pressure reducing groove 114 is mainly used to reduce the stimulation of the bone plate to the soft tissue and increase the plasticity of the plate body (for example, the concave fold of the plate body, etc.). In another embodiment, the first pressure reducing groove 114 is a left-right symmetric structure.

In one embodiment, the first perforation in the at least one hollow connecting block is the same size as the second perforation. In another embodiment, in order to maintain the mobility and fixation capabilities of the bone plate of the present invention, the present invention has both first and second perforations, and the number of first perforations is the same as the number of the hollow connection blocks.

The dynamic sliding bone plate of the present invention provides several different combinations, and the different combinations described above utilize different interactions between the contours of the first groove 106A and the shapes of the different joints 108 to produce different combinations. As shown in the third and fourth figures, the shape of the connecting portion 108 of the present invention may be cylindrical, elliptical or capsule.

Referring to the third figure, in an embodiment, when the connecting portion 108 is in the shape of an elliptical cylinder or a capsule, the first groove contour for matching the shape of the connecting portion may be elliptical or capsule-shaped, and thus, according to the foregoing The combination of the shape of the connecting portion and the contour of the first recessed groove moves at least one of the hollow connecting blocks in a sliding manner in the first recessed groove.

Referring to the fourth figure, in an embodiment, when the connecting portion 108 has a cylindrical shape, the first groove contour for matching the shape of the connecting portion may be circular, elliptical or capsule, thereby In combination with the shape of the connecting portion and the contour of the first recess, at least one of the hollow connecting blocks moves in a sliding or rotating manner in the first recess.

Further, please refer to FIG. 5(A)-(C), which is a schematic diagram showing a plurality of matching first groove contours of the cylindrical connecting portion; if the connecting portion 108 has a cylindrical shape, The first groove profile matching the shape of the aforementioned connecting portion may be elliptical or capsule-shaped (as shown in FIG. 5(A)), and therefore, In combination with the shape of the connecting portion and the contour of the first recess, at least one of the hollow connecting blocks is slidably and rotatably moved in the first recess. When the at least one hollow connecting block is slid or rotated, the hollow connecting block can drive a plurality of locking screws to move, and when the at least one hollow connecting block can slide, the sliding distance is between 0.5-3 mm.

In an embodiment, if the connecting portion 108 has a cylindrical shape, the first groove contour for matching the shape of the connecting portion may be circular (fifth (B)), and therefore, the connecting portion is provided by the foregoing The shape is combined with the contour of the first groove, and the cross-sectional diameter of the cylindrical connecting portion is approximately the same as the diameter of the circular first grooved contour, and at least one hollow connecting block is rotated in the first recessed groove In another embodiment, if the cross-sectional diameter of the cylindrical connecting portion is small and the diameter of the circular first recessed contour (fifth (C)), at least one hollow connecting block is in the first embedded The slot moves in a manner of rotation and sliding, and when the at least one hollow connecting block can slide, the sliding distance length is between 0.5 and 3 mm.

Fig. 6 (A) and (B) show an embodiment in which the bone plate is fixed to the fracture site. In a preferred embodiment of the present invention, the bone plate of the present invention comprises a plurality of hollow connecting blocks 104 having a first through hole 110 and a second through hole 112; and the sixth embodiment (A) shows that the bone plate of the present invention is fixed. Above the first broken bone B1 and the second broken bone B2 of the fracture site, a plurality of hollow connecting blocks 104 embedded in the first embedded groove 106A are disposed under the bone plate of the present invention, and a plurality of locking screws 202 are disposed. The first through hole 110 of the hollow connecting block 104 is locked to the second broken bone B2, and the plurality of locking screws 202 can be inserted through the second through hole 112 of the bone plate and locked to the first broken bone B1. Therefore, if the fracture site has not been affected by an external force, the bone plate of the present invention can be used to maintain the gap and relative position between the first B1 and the second B2 fractured bone.

In addition, as shown in the sixth figure (B), when the first broken bone B1 or the second broken bone B2 is pressed by an external force (as indicated by the upper and lower arrows), the plurality of locks in the second broken bone B2 are made. The fixing screw 202 drives the hollow connecting block 104 of the bone plate of the present invention to slide or rotate, and the connecting belt also causes the micro-motion of the first B1 or the second B2 broken bone. Therefore, the hollow connecting block 104 embedded in the first embedded groove 106A receives the When the recessed groove 106A and the connecting portion 108 restrict the moving direction thereof, the hollow connecting block 104 is also slid or rotated by the plurality of locking screws 202, so when the two broken bones B1 and B2 are pressed by an external force, The sliding or rotating of the hollow connecting block 104 of the invention will allow the broken bones B1 and B2 of the fracture site to be slightly moved and use the micro-motion of the fractured end to stimulate the bone to help the bone to heal; on the other hand, due to the plurality of When the locking screw 202 drives the hollow connecting block 104, it can also be slightly shaken in the broken bone, so that a plurality of locking screws can stimulate bone growth in the broken bone.

For example, when the dynamic sliding bone plate of the present invention can be applied to a distal tibial fracture (such as The seventh bone plate comprises a plurality of hollow connecting blocks 104 having a first through hole 110 and a second through hole 112, and the portion of the bone plate attached to the humeral shaft has a plurality of first portions. At least one fitting hole 106 of the recess 106A and the connecting portion 108 of the at least one hollow connecting block 104 are embedded in the first fitting groove 106A, so that the hollow connecting block 104 is placed in the bone plate fitting hole 106, and plural The locking screw can be inserted through the first perforation 110 of the hollow connecting block 104 and locked to the humeral shaft; on the other hand, the bone plate of the present invention attached to the joint of the distal end of the humerus can be provided with a plurality of second perforations. 112, and the plurality of locking screws 202 can pass through the second through hole 112 and be locked to the distal end of the humerus; therefore, when the patient stands, the plurality of locking screws that are inserted through the first through hole 110 of the hollow connecting block are When squeezed by the patient's weight, it is also driven by the hollow connecting block to make the distal part of the fracture site or the distal end of the humerus fretting and use the fretting of the fracture end to stimulate the epiphysis to help the fracture to heal; in addition, it is locked at the distal end of the humerus. Multiple locking screws can maintain 胫The distal end of the configuration. In an embodiment, in order to improve the mobility of the dynamic sliding bone plate, the bone plate of the present invention may have only a plurality of hollow connecting blocks 104 having the first perforations 110, so that the plurality of locking screws 202 can be worn first. The perforation 110 is locked outside the distal radius of the humerus and the humeral shaft. The distal radius of the humerus or the humeral shaft can be slightly moved and the bones of the fracture end can be used to stimulate the bone to help the fracture to heal.

The eighth (A) diagram is an illustration of the use of an embodiment to illustrate the suppression of movement of the hollow connecting block. In an embodiment, as shown in the first and eighth (A) drawings, at least one of the fitting holes 106 further has a second recess 116 therein, wherein the bone plate of the present invention further has at least one stopper 804 At least one stop 804 can be embedded in the second recess 116 for inhibiting movement of the at least one hollow connecting block 104; as can be seen from the above, if a plurality of locking screws are to be inserted through the first through hole 110 202 does not move with the bone, and the stopper 804 can be inserted into the second recess 116 inside the fitting hole 106 to inhibit the movement of the at least one hollow connecting block 104. In another embodiment, the eighth (B), drawing is an embodiment for explaining a combination of the stopper and the hollow connecting block. The stopper 804 is a latch, and the latch further has a first arm 806 and a second arm 808, wherein the first arm 806 has at least one fixing portion 8061, and the at least one hollow connecting block 104 The at least one fixing portion 8061 is shaped to match the at least one fixing groove 802. The eighth (C) is an embodiment for explaining the stopper and the hollow connection. The second arm 808 can be embedded in the second recess 116. The at least one fixing portion 8061 can be embedded in the at least one fixing groove 802. The end of the plug can be connected to the pull ring 810. If the user wants to move the hollow connecting block, the pull ring 810 can be used to pull the latch, so that at least one fixing portion 8061 of the first arm 806 is disengaged from the fixing groove. 802 to pull out the pin. In an embodiment, the connecting portion 108 and the at least one fixing groove 802 are respectively located on different sides of the hollow connecting block 104.

The dynamic sliding bone plate of the present invention can be applied to different fracture sites, and the shape of the dynamic sliding bone plate can be created in conjunction with the bone shape of each part of the human body; in another embodiment, the at least one second perforation 112 is Further, the non-vertical or vertical through the dynamic sliding bone plate, so that the axes of the plurality of locking screws 202 that are disposed through the second through hole 112 are in a staggered or parallel arrangement shape, and the dynamic sliding bone plate can be strengthened by such arrangement. The fixation of the fracture site.

In one embodiment, the material of the dynamic sliding bone plate of the present invention may be made of titanium metal or titanium 6 aluminum 4 vanadium (Ti6Al4V). In one embodiment, the device material described above may be steel. In one embodiment, the plate system of the dynamic sliding bone plate is an integrally formed structure.

The above description is a preferred embodiment of the invention. Those skilled in the art should be able to understand the invention and not to limit the scope of the patent claims claimed herein. The scope of patent protection is subject to the scope of the patent application and its equivalent fields. Any modification or refinement made by those skilled in the art without departing from the spirit or scope of the present invention is equivalent to the equivalent change or design made in the spirit of the present disclosure, and should be included in the following patent application scope. Inside.

100‧‧‧Dynamic sliding bone plate

102‧‧‧ board

104‧‧‧Hollow connection block

106‧‧‧ fitting holes

106A‧‧‧First slot

108‧‧‧Connecting Department

110‧‧‧First perforation

112‧‧‧Second perforation

114‧‧‧First decompression tank

116‧‧‧Second inlay

Claims (10)

A dynamic sliding bone plate comprising: a plate body, the plate body further comprising at least one fitting hole, wherein the at least one fitting hole has a plurality of first fitting grooves inside; at least one hollow connecting block having at least one connection The hollow connecting block is embedded in the plurality of first recesses by the at least one connecting portion, and the at least one hollow connecting block is disposed in the at least one fitting hole, wherein the at least one The hollow connecting block has a first through hole; wherein the first through hole is used for a plurality of locking screws; and when the plurality of locking screws pass through the first through hole and is fixed to a broken bone, the at least The movement of a hollow connecting block is limited by the at least one connecting portion and the plurality of first recessed grooves. The dynamic sliding bone plate of claim 1, wherein the inner side of the first perforation has a first internal thread, and the first internal thread is screwed to the external thread of the screw of the plurality of locking screws. The dynamic sliding bone plate of claim 1, wherein the plate further comprises at least one second perforation, the at least one second perforation being also threaded by the plurality of locking screws. The dynamic sliding bone plate of claim 3, wherein the inner side of the at least one second perforation has a second internal thread, and the second internal thread is screwed to the external thread of the screw of the plurality of locking screws. The dynamic sliding bone plate of claim 1, wherein the plate further has a plurality of first pressure reducing grooves. The dynamic sliding bone plate of claim 1, wherein the inner side of the at least one fitting hole further has a second recess. The dynamic sliding bone plate of claim 6, wherein the bone plate further has at least one stop member, the at least one stop member being embedded in the second recessed groove to inhibit movement of the at least one moving block. The dynamic sliding bone plate of claim 1, wherein the connecting portion has a cylindrical shape or an elliptical column shape or a capsule shape. The dynamic sliding bone plate of claim 8, wherein the contour of the first groove matches the joint portion, and when the connecting portion has a cylindrical shape, the at least one hollow connecting block is in the first recessed groove Move or slide to move. The dynamic sliding bone plate of claim 8, wherein the contour of the first groove matches the joint portion, and when the joint portion is in the shape of an elliptical cylinder or a capsule, the at least one hollow joint block is in the first insert. The slot moves in a sliding manner.