CN210009115U

CN210009115U - Minimally invasive bone fracture plate system with bracket nail

Info

Publication number: CN210009115U
Application number: CN201920303531.6U
Authority: CN
Inventors: 赖金平
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-11
Filing date: 2019-03-11
Publication date: 2020-02-04
Anticipated expiration: 2029-03-11

Abstract

Support nail wicresoft coaptation board system, including the coaptation plate body, the screw, the support column, its characterized in that screw top is provided with the cylinder that the diameter ratio screw body is big, the columniform lateral surface has the external screw thread, the both sides of the coaptation plate body that spanes fracture department set up two at least screw holes that match with cylinder external screw thread, the support column setting just is cyclic annularly on the screw body, cyclic annular support column is the gasket form and forms with screw body monolithic processing together, perhaps cyclic annular support column is gasket form and screw thread and connects on the screw body soon, perhaps cyclic annular support column is the tube-shape and cup joints on the screw body, perhaps cyclic annular support column is the tube-shape and connects on the screw body with. Compared with the prior art, the utility model, have can carry out the wicresoft coaptation effectively, when the coaptation is fixed, easy to operate, and can not produce the oppression to fracture broken end surface, periosteum, skin, the fracture healing back, advantage easy dismantlement.

Description

Minimally invasive bone fracture plate system with bracket nail

The technical field is as follows: the utility model relates to an orthopedic medical instrument.

Background art: as disclosed in patent application 201610253693.4, in the existing minimally invasive bone plate system, one side of the bone plate body crosses two sides of the fracture line, each side of one side of the bone plate body is provided with at least two supporting columns, a screw hole is arranged on the bone plate body, a screw is inserted into the screw hole from the other side of the bone plate body and passes through the supporting columns, and finally enters the cortical bone to complete the fracture fixation; or two adjacent support columns are fixedly connected to the bone plate bodies on two sides of the screw hole, and the screw is inserted into the screw hole from the other side of the bone plate body and then directly enters the cortical bone to complete fracture fixation. The bone fracture plate system needs to be stably fixed between the bone surface of the fracture section and the bone fracture plate by the support column under the action of the screw, so that the stability of a bone fixing framework is ensured, and further the stability of the fracture section is ensured. Patent 200710145860.4 discloses a bone plate system for minimally invasive osteosynthesis, which is not easy to operate in clinical practice.

The utility model has the following contents: an object of the utility model is to provide a have simultaneously that the fixed fracture of coaptation board is reliable and stable, have again that the external fixation support need not cut on a large scale and open promptly minimal access surgery, keep away from bone face, periosteum, do not oppress bone face, periosteum and just can realize stabilizing fracture and fix, simultaneously, after the union of fracture, can avoid getting internal fixation "major operation" for the second time, convenient operation's support nail minimal access coaptation board system. The utility model is realized by the bone-knitting plate body, the screw,Support columnThe bone fracture plate is characterized in that a cylinder with a diameter larger than that of the screw body is arranged at the top end of the screw, external threads are arranged on the outer side surface of the cylinder, at least two screw holes matched with the external threads of the cylinder are respectively arranged on two sides of a bone plate body crossing the fracture part, the supporting column is arranged on the screw body and is annular, and the annular supporting column is in a gasket shape and is integrally processed with the screw body; or the annular supporting column is in a gasket shape and is screwed on the screw nail body in a threaded manner; or the annular supporting column is in a tube shape and is sleeved on the screw nail body; or the annular supporting column is in a tube shape and is screwed on the screw body by screw threads.

When in use, after the fracture is reduced, the reduction state of the fracture is maintained, and a bone plate body with proper length is selected, and the shape of the bone plate body is matched with the shape of the bone surface or the skin at the fracture part; then determining a nail feeding point, making a small incision on the skin at the nail feeding point, separating to the bone surface and measuring the distance from the bone surface to the skin surface, placing a bone fracture plate to a corresponding position, determining the position of a screw hole opposite to the small incision of the skin nail feeding point, drilling the bone into the bone and penetrating the bone cortex, measuring the distance from the opposite bone surface to the surface of the bone fracture plate, selecting a screw with a tubular annular supporting column or a screw with a gasket-shaped annular support with corresponding length according to the measured length, screwing the screw into the screw one by one to fix the fracture, ensuring that the screw stably fixes the bone through the tubular annular supporting column between the fracture section and the bone fracture plate body or the gasket-shaped annular supporting column tightly attached to the bone surface of the fracture section, and simultaneously fixing the screw on the screw hole of the bone fracture plate body through a cylindrical structure with external threads at the top. Under the combined action of the support column, the screw and the bone fracture plate, the bone fracture plate realizes the fixation of the fracture section under the condition of being far away from the bone surface and the periosteum.

The annular supporting column can be in various shapes such as spherical or conical shapes, so that when the annular supporting column and the screw rod enter a tissue layer under skin, the supporting column can push tissues such as tendons, blood vessels and nerves away, and when the supporting column is in close contact with a bone surface, the tissues cannot be damaged; the bottom surface of the annular supporting column presses the fracture surface of the fracture end, so that the screw is stably fixed at the fracture end.

When the gasket-shaped annular supporting column and the tube-shaped annular supporting column are connected to a screw (a screw rod) in a threaded manner and the like, the positions of the gasket-shaped annular supporting column and the tube-shaped annular supporting column on the screw rod can be adjusted to adjust the position of the bone fracture plate and the depth of the screw driven into the bone of the fracture section.

The bone plate body may be located outside the skin or subcutaneous layer or periosteum.

When the bone plate body is positioned outside the skin and the gasket-shaped annular supporting column is adopted, the supporting column is positioned in the skin and adopts a tube-shaped annular support, and the top end of the tube-shaped annular supporting column is positioned outside the skin.

Because the annular supporting column can be combined with the screw in various ways: the annular supporting column and the screw can be integrated into a whole during production and processing, namely a fixed supporting column; or the bone fracture plate is processed into a component, and the position of the annular support on the screw rod can be adjusted or the specification and the length of the annular support column can be changed to adjust the position of the bone fracture plate when the bone fracture plate is used; the top of the annular support column is provided with a threaded screw top end which is fixedly combined with the bone fracture plate through threads, the lower part of the annular support column is provided with a threaded screw body part, the support column is positioned between the annular support column and the bone fracture plate, the screw rod of the screw can only enter a preset position and cannot enter bone in an unlimited manner, and the screw can not only be tightly combined with a fracture section, but also be fixed at the preset position far away from the bone surface, namely the position of the screw top end threads, so that the effect of a support is exerted.

The shape of the bone plate body is matched with the shape of the bone or skin at the fracture part, so that the bone plate can not press tissues such as the bone surface, the skin and the like.

Compared with the prior art, the utility model, owing to adopted the nail post integral type screw that screw and cyclic annular support column combine to and the coaptation board of threaded screw, when nail post integral type screw is twisted contralateral cortex into, cyclic annular support column bottom surface is hugged closely with the bone surface simultaneously, continues to twist the screw, because the pulling force of screw rod screw thread, between support column bottom surface and bone surface, will form powerful effect and reaction force, at this moment, the screw top closely combines with the screw, will reach stably, reliably to the fixed of fracture; when the coaptation board is in the skin outside, after the union of fracture, can very simply demolish the fracture fixture to reduce the second time "take out internal fixation coaptation board" major operation, consequently, the utility model discloses have: the fixation of the fracture operation can be completed in a minimally invasive way, so that the operation risk is reduced; the tissues such as the bone surface, the bone surface and the like are not pressed, the blood supply of the fracture section is protected, and the fracture healing is facilitated; reducing tissue adhesion near joints and protecting joint functions; when the bone fracture plate is externally arranged, the 'major operation' of taking out the fracture internal fixation for the second time can be avoided, and the hospitalization time is greatly shortened.

Description of the drawings:

fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural view of embodiment 2 of the present invention.

The specific implementation mode is as follows:

the present invention will now be described in further detail with reference to the accompanying drawings and examples:

example 1: as shown in fig. 1, including the bone plate body 1, the screw 2, its characteristic lies in that the top of the screw 2 is equipped with the diameter ratio screw 2 nail body bigger column 3, the lateral surface of the column 3 has external screw thread, the column 3 is equipped with the hexagon socket (or other shape fixed orifices, such as plum blossom hole) 4, through the screw rotation, cross the fracture a department of the fracture section 5 bone plate body 1 both sides set up at least two with the column 3 external screw thread matching screw hole 6, the middle part of the screw 2 is equipped with the spacer-like annular support 7, the spacer-like annular support 7 and the screw nail body of the screw 2 are processed integrally together, or the spacer-like annular support 7 is screwed on the screw 2 with the screw thread.

The annular support column 7 may be spherical or conical or other suitable surface.

After the fracture section 5 is reset, the reset state of the fracture section 5 is kept, a bone plate body 1 with proper length is selected, and the shape of the bone plate body 1 is matched with the shape of the bone surface or the skin 8 at the fracture section 5; then determining a nail feeding point, making a small incision on the skin 8 at the nail feeding point, separating to the bone surface and measuring the distance from the bone surface to the surface of the skin 8, placing a bone plate body 1 to a corresponding position, determining the position of a screw hole 6 facing the small incision on the skin 8, drilling the bone into the bone and penetrating through opposite cortex of the bone, measuring the distance from the opposite bone surface to the surface of the bone plate, selecting a screw 2 with a specification corresponding to the screw 2, the middle of which is provided with a gasket-shaped annular supporting column 7, and screwing the screw one by one to fix a fracture section end 5, ensuring that the screw 2 is stably connected on the fracture section 5 through the gasket-shaped annular supporting column 7 positioned between the bone surface of the fracture section and the bone plate body 1, and meanwhile, fixing the screw 2 on the bone plate body 1 through a.

Example 2 in this example, as shown in fig. 2, in addition to example 1, a tubular annular support 9 fitted over the screw 2 and provided between the bone plate bodies 1 and 5 is used instead of the washer-shaped annular support 7, the screw 2 is stably connected to the fracture section 5 by the tubular annular support 9 located between the fracture section 5 and the bone plate body 1, the tubular annular support 9 is fitted over the body of the screw 2, or the tubular annular support 9 is screwed to the screw 2.

Claims

1. The minimally invasive bone fracture plate system with the support nail comprises a bone fracture plate body, a screw and a support column, and is characterized in that a cylinder with a diameter larger than that of the screw body is arranged at the top end of the screw, external threads are arranged on the outer side surface of the cylinder, at least two screw holes matched with the external threads of the cylinder are respectively arranged on two sides of the bone fracture plate body crossing a fracture part, the support column is arranged on a screw rod of the screw and is annular, and the annular support column is in a gasket shape and is integrally processed together with the; or the annular supporting column is in a gasket shape and is screwed on the screw nail body in a threaded manner; or the annular supporting column is in a tube shape and is sleeved on the screw nail body; or the annular supporting column is in a tube shape and is screwed on the screw body by screw threads.

2. The minimally invasive bone plate system with bracket nails according to claim 1, wherein the distal end of the annular support column can be spherical or conical.