TWM611954U - Composite bone locking improvement - Google Patents

Abstract

A composite bone locking improvement for joining multiple broken bones, comprising at least one self-tapping screw sleeve. The self-tapping screw sleeve has a cylindrical structure. The outer side of the self-tapping screw sleeve is provided with an external thread part, and the external thread part is concave. At least one self-tapping groove is provided, the inner side of the self-tapping screw sleeve has an internal thread portion, the inner top of the self-tapping screw sleeve has a tool portion, and the self-tapping screw sleeve is embedded in the cortical bone part of each broken bone; and at least one fixing screw, which Corresponding to the internal thread of the self-tapping screw sleeve, the fixing screw locks the self-tapping screw sleeve to join the broken bones. When using this creation, first drill holes in the broken bones and then embed the self-tapping screw sleeves in the cortical bones, and then lock the broken bones with screws. If necessary, add a bone plate with fixing holes to allow the fixing screws to pass through. The self-tapping screw sleeve is locked behind the bone plate to join the broken bones. This creation can shorten the length of the fixation screw, reduce the degree of integration between the fixation screw and the bone plate due to tissue proliferation, so that the fixation screw and the bone plate can be smoothly removed after the broken bone is healed and avoid the fixation screw from loosening.

Description

Composite bone locking improvement

This creation is related to an improvement of a fixed bone fracture mechanism, especially a composite bone locking improvement that can increase the locking strength and guiding effect.

When bones are damaged and ruptured due to trauma, disease, or various operations, bone plates and fixing screws are often used to fix each bone fragment in order to allow the broken bone to heal stably and close to its original appearance. Because the bone marrow is loose, the conventional fixation screw A in the first picture needs to be penetrated out of the bone, so that both ends of the conventional fixation screw A are locked on the hard outer cortical part of the bone in order to stabilize the bones. Fragments cannot be twisted by force to avoid bone collapse; but in this way, the length and area of the conventional fixation screw A in contact with the bone are quite large. When the conventional fixation screw A needs to be removed after the bone has healed, the conventional fixation screw A A and bone plate are likely to be combined with each other, or the conventional fixation screw A will have broken teeth, wrong teeth, etc., which makes it difficult to remove the conventional fixation screw A and the bone plate. When removing the conventional fixation screw A It may also cause secondary injury when it is connected to the bone plate; or when the patient’s osteoporosis or the cortical bone is too thin, as shown in the second figure, the conventional fixation screws A1 may loosen from the broken bone or The situation of slipping.

In view of this, the creator has accumulated many years of research and practical experience in related fields, and specially created a composite bone locking improvement to improve the lack of the above-mentioned conventional technology.

The main purpose of this creation is to provide a composite bone locking improvement that can reduce the occurrence of screw and bone plate binding, and can increase the occlusal strength of the bone nail, and replace the conventional screw with a combination of a self-tapping screw sleeve and a screw. It can increase the occlusal strength of the bone screw, take out the screw and the bone plate less effortlessly and reduce the secondary injury.

To achieve the above purpose, the composite bone locking improvement of this creation is used to join multiple broken bones. It includes at least one self-tapping screw sleeve. The self-tapping screw sleeve is a cylindrical structure, and the self-tapping screw sleeve has an outer side outside. At least one self-tapping groove is recessed in the external thread part and the external thread part. There is an internal thread part on the inner side of the self-tapping screw sleeve, and there is a tool part on the inner top of the self-tapping screw sleeve. , Each tapping slot can be filled with self-tapping screw sleeves to lock the broken bones generated during the tapping of each broken bone, so that the self-tapping screw sleeve is stably buried in each broken bone; and at least one fixed screw, which corresponds to the self-tapping screw In the internal thread part of the sleeve, the fixing screw locks the self-tapping screw sleeve to join the broken bones. The self-tapping screw sleeve can form a high-strength internal threaded hole in each broken bone for the fixing screws to lock, so that each fixed screw does not need Run through the broken bones.

In this creation, you can add a bone plate and use multiple self-tapping screw sleeves and multiple fixing screws. The bone plate has multiple fixing holes. After each fixing screw passes through the fixing holes, the respective tapping screw sleeves are locked and the bone plate is clamped by force. Join the broken bones.

This creation first drills holes in the broken bone and implants a self-tapping screw sleeve, and then places the bone plate as appropriate to easily lock the fixation screws in and closely fit the bone plate, and it can be easily removed when the bone plate and the fixation screws are removed; To improve the alignment of the bone plate with the conventional fixing screw, it is often because the conventional fixing screw and the fixing holes on the bone plate are seized, or because the conventional fixing screw has a broken tooth or a wrong tooth, the bone is broken. After recovery, it is not easy to remove the conventional fixation screws and bone plates.

The self-tapping screw sleeve can form a high-strength internal threaded hole in each broken bone for the fixation screw to lock, so that the fixation screw does not need to penetrate each broken bone, so as to reduce the combination between the fixation screw and the bone plate due to tissue proliferation It is easier to remove the fixation screw and bone plate after the broken bone is healed, and it can prevent the fixation screw from loosening or slipping when the patient is osteoporotic or the cortical bone is too thin; reducing the depth of the drill hole can also speed up the fracture. Bone healing. The self-tapping screw sleeve can be made of non-biologically toxic materials and placed in each broken bone for later use when adjusting each broken bone if necessary. The tapping grooves on the outer side of the self-tapping screw sleeve can be used for filling and locking the broken bones generated during the tapping of each broken bone, so that the self-tapping screw sleeve is more stably buried in each broken bone. The use of a ruler to drill holes can ensure that the angle of the hole does not deviate from the predetermined angle.

This creation can be used on all parts of the body, including the spine, as well as fractures caused by various traumas.

The tool part can be a star-shaped hole with threads, and the tool part can be used for a star-shaped tool to rotate and lock the self-tapping screw sleeve into the broken bone that has been drilled. The self-tapping groove can be square and recessed at the bottom end of the external thread part.

In order to be able to clearly and fully expose the creation, a preferred implementation example is listed to illustrate its implementation in detail as described later.

Please refer to the third to seventh figures, which reveal the schematics of the implementation of this creation. The above-mentioned schematics illustrate the embodiment (1) of the composite bone locking improvement of this creation, which is used to join a plurality of broken bones B. At least one self-tapping screw sleeve 11 is included. The self-tapping screw sleeve 11 has a cylindrical structure. The outer side of the self-tapping screw sleeve 11 has an external threaded portion 111. The external threaded portion 111 may be a self-tapping thread, and the external threaded portion 111 is recessed. At least one self-tapping groove 112. In this embodiment, three square self-tapping grooves 112 are recessed at the bottom end of the external thread portion 111. The respective tapping grooves 112 on the outer side of the self-tapping screw sleeve 11 can be filled with the self-tapping screw sleeve 11 and locked in The broken bones generated during the tapping of each broken bone B make the self-tapping screw sleeve 11 more stably buried in each broken bone B. In this embodiment (1), the respective tapping groove 112 is a square groove, but this creation is not limited The shape of the respective tapping groove 112; the inner side of the self-tapping screw sleeve 11 has an internal thread portion 113, and the inner top of the self-tapping screw sleeve 11 has a tool portion 114, and the self-tapping screw sleeve 11 is embedded in each fracture with the tool portion 114 facing outward. Bone B, the self-tapping screw sleeve 11 is fixed on the cortical bone part of each broken bone B. In this embodiment, the tool part 114 is in the shape of a star-shaped hole with threads, and the tool part 114 is provided for a star-shaped tool to rotate and self-tapping screws. The sleeve 11 is used to embed and lock the self-tapping screw sleeve 11 into the cortical bone part of the drilled broken bone B. The thread of the tool part 114 is the same as the internal thread part 113; and at least one fixing screw 12 corresponding to the self-tapping screw sleeve Each internal thread portion 113 of 11, the fixing screw 12 locks the self-tapping screw sleeve 11 to join each broken bone B. The self-tapping screw sleeve 11 can form a relatively high-strength internal threaded hole in each broken bone B for the fixing screw 12 to lock Therefore, the fixing screw 12 does not need to penetrate the broken bones B, and it can prevent the fixing screw 12 from loosening or slipping when the patient's osteoporosis or the cortical bone is too thin.

The modified embodiment (1) of the composite bone locking of this creation further includes a bone plate 1, which has a plurality of fixing holes 10, and the plurality of fixing holes 10 allows the bone plate 1 of this creation to correspond to broken bones B at various fracture positions. , This creation does not limit the shape of the bone plate 1 and the distribution and number of fixing holes 10. The shape of the bone plate 1 and the distribution and number of fixing holes 10 can be adjusted according to the bone shape of the part to be used, such as the spine, palm or For legs, etc., bone plates 1 of different shapes can be used. When bone plate 1 is used, multiple self-tapping screw sleeves 11 and multiple fixing screws 12 can be used to fix bone plate 1, each fixing screw 12 passes through each fixing hole After 10, the respective tapping screw sleeves 11 are locked and the bone plate 1 is clamped with force to join the broken bones B. Each broken bone B can be a vertebra, so that the creation can be used in spinal surgery such as spinal fusion and not limited to treating fractures. The self-tapping screw sleeve 11 can be embedded on the front, side or back of each vertebra.

When this creation is used, first drill a plurality of installation grooves 2 in each broken bone B with a drill pin C as shown in the fourth figure. Each installation groove 2 corresponds to the position where each fixing hole 10 of the bone plate 1 is to be locked. When drilling needle C, use gauge guide D to drill holes to ensure that the drilling angle will not deviate from the predetermined angle. As shown in the fifth figure, each tapping screw sleeve 11 is locked into each broken bone in each installation groove 2 respectively. For the cortical bone part of B, after placing the bone plate 1 as shown in the sixth figure, the fixing screws 12 can be easily locked into the self-tapping screw sleeve 11 and closely fit the locking bone plate 1 as shown in the seventh figure; The bone plate 1 and the fixing screws 12 can also be easily removed when removing the bone plate 1, which can improve the alignment of the conventional fixing screw A. When the bone plate 1 is aligned, it is often caused by the conventional fixing screw A and the fixing holes 10 on the bone plate 1. , Or because the conventional fixation screw A has broken teeth, wrong teeth, etc., it is difficult to remove the conventional fixation screw A and the bone plate 1 after the broken bone B is restored. The self-tapping thread of the external thread 111 allows the self-tapping screw sleeve 11 to be smoothly locked into the cortical bone part of the broken bone B after drilling, and the self-tapping screw sleeve 11 can form a relatively high-strength internal threaded hole in each broken bone B The fixation screw 12 is used for locking, so that the fixation screw 12 does not need to penetrate through the broken bones B. In this way, the degree of bonding between the fixation screw 12 and the bone plate 1 due to tissue proliferation can be reduced. After the broken bone B is healed, it is easier to remove and fix Screw 12 and bone plate 1, and can prevent the patient from osteoporosis or the cortical bone is too thin, the fixing screw 12 will loose or slip off; because there is no need to drill through the broken bones B, reducing the drilling depth can also speed up Each broken bone B healed.

The self-tapping screw sleeve 11 can be made of non-biologically toxic materials and placed in each broken bone B for use when adjusting each broken bone B if necessary in the future. The tapping grooves 112 on the outer side of the self-tapping screw sleeve 11 can be used for filling and locking the broken bones generated during the tapping of each broken bone B, so that the self-tapping screw sleeve 11 is more stably embedded in each broken bone B. The self-tapping screw sleeve 11 also has the function of guiding the fixing screw 12.

In the eighth figure, in the modified embodiment (2) of the composite bone locking of this creation, it can be seen that this creation can be used in treatments where the bone plate 1 is not required, and only the plural fixing screws 12 and plural self-tapping are used. The screw sleeve 11, this embodiment (2) is used to treat the femur combined with the hip joint. This creation can avoid the loosening or slipping of the conventional fixing screw A1 as shown in the second figure.

In the ninth figure, in the modified embodiment (3) of the composite bone locking of this creation, it can be seen that this creation can stably fix the bone plate 1, and each fixing screw 12 is also stably locked to the respective tapping screw sleeve 11. . This creation can prevent the loosening or slipping of the fixing screws 12 from occurring.

In the tenth figure to the twelfth figure, each broken bone B in the embodiments (4), (5) and (6) of the composite bone locking improvement of this creation can be a spine, so that this creation can be used in Spine surgery such as spinal fusion is not limited to the treatment of fractures. The respective tapping sleeve 11 can be embedded on the front, side or back of the spine according to the needs of the operation and matched with bone plate 1, bone nail (not drawn) and nail rod (not drawn), etc. And other equipment use.

However, the above are only the preferred embodiments of this creation, and should not be used to limit the scope of implementation of this creation. Any obvious changes and modifications that can be made by those who are accustomed to this industry should be regarded as not deviating from it. The essence of this creation.

1: bone plate 10: Fixing hole 11: Self-tapping screw sleeve 111: External thread 112: self-tapping slot 113: Internal thread 114: Tool Department 12: Fixing screws 2: installation slot A: Conventional fixing screws A1: Conventional fixing screws B: Broken bone C: Drill needle D:Guide

The first figure is a schematic diagram of the conventional method of fixing bones (1). The second figure is a schematic diagram of the conventional method of fixing bones (2). The third figure is a three-dimensional view of the components of the modified embodiment (1) of the created composite bone locking. The fourth figure is a schematic diagram (1) of the creative embodiment (1) of the composite bone locking improvement. The fifth figure is a schematic diagram (2) of the creative embodiment (1) of the composite bone locking improvement. The sixth figure is a schematic diagram (3) of the creative embodiment (1) of the composite bone locking improvement. The seventh figure is a schematic diagram (four) of the created composite bone locking improvement embodiment (1). The eighth figure is a schematic diagram of the creative embodiment (2) of the composite bone locking improvement. The ninth figure is a schematic diagram of the creative embodiment (3) of the composite bone locking improvement. The tenth figure is a schematic diagram of embodiment (4) of the created composite bone locking improvement. The eleventh figure is a schematic diagram of embodiment (5) of the created composite bone locking improvement. The twelfth figure is a schematic diagram of embodiment (6) of the created composite bone locking improvement.

1: bone plate

10: Fixing hole

11: Self-tapping screw sleeve

111: External thread

112: self-tapping slot

113: Internal thread

114: Tool Department

12: Fixing screws

Claims (4)

A composite bone locking improvement, which is used to join a plurality of broken bones. The composite bone locking improvement includes: At least one self-tapping threaded sleeve, the self-tapping threaded sleeve has a cylindrical structure, an outer threaded portion is provided on the outer side of the self-tapping threaded sleeve, and at least one self-tapping groove is recessed on the outer threaded portion, and the inner side of the self-tapping threaded sleeve There is an internal thread part, the inner top of the self-tapping screw sleeve has a tool part, the self-tapping screw sleeve is embedded in the cortical bone part of each broken bone, and the self-tapping groove is used to fill the self-tapping screw sleeve into each broken bone Fragmented bones generated during tapping, so that the self-tapping screw sleeve is stably buried in each of the broken bones; and At least one fixing screw corresponds to the internal threaded part of the self-tapping screw sleeve, and the fixing screw locks the self-tapping screw sleeve to engage the broken bones. The composite bone locking improvement according to claim 1, wherein the tool part is in the shape of a star-shaped hole with threads, and the tool part is used for a star-shaped tool to rotate the self-tapping screw sleeve. The composite bone locking improvement described in claim 1 further includes a bone plate with a plurality of fixing holes, and the fixing screws pass through the fixing holes and then lock the self-tapping screw sleeve and force to clamp the Bone plates to join each of the broken bones. The composite bone locking improvement according to claim 1, wherein each of the broken bones is a vertebra.

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