CN219397528U

CN219397528U - Humerus minimally invasive bone fracture plate

Info

Publication number: CN219397528U
Application number: CN202222987293.XU
Authority: CN
Inventors: 许智; 朱敏; 徐永清
Original assignee: 920th Hospital of the Joint Logistics Support Force of PLA
Current assignee: 920th Hospital of the Joint Logistics Support Force of PLA
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-07-25
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses a humerus minimally invasive bone fracture plate, which comprises: a proximal locking portion, an intermediate connecting portion, and a distal locking portion; the proximal locking part and the distal locking part are respectively and fixedly connected to two ends of the middle connecting part, and positioning holes are formed in the proximal locking part and the distal locking part; the axis of the osteotomy guide plate is spiral, and the plane where the proximal locking part is located and the plane where the distal locking part is located have angle differences; the utility model abandons the traditional single-plane bone fracture plate, adopts a multi-plane cladding mode, fixes the fracture position of a patient from more than one direction, namely, the far end and the near end of the bone fracture plate have torsion angle difference in the application, wherein the middle connecting part in a spiral shape or a step shape is adopted for transition, and the constraint force from more than one direction is ensured at the fracture position; compared with the prior art, the coating area and the angle of the fracture part are increased, so that two ends of the fracture cannot move to two sides, and the stability of humerus fracture fixation is improved.

Description

Humerus minimally invasive bone fracture plate

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a humerus minimally invasive bone fracture plate.

Background

The humerus is the thickest bone of the upper limb, the upper end forms a shoulder joint with the scapula, and the lower end forms an elbow joint with the radius and ulna. The diaphysis comminuted fracture, especially fracture with fracture line extending to 1/3 of distal humerus, and the bone fracture plate has small holding space for distal fracture and is very difficult to fix. There is a osseous radial sulcus behind the mid-shaft of the humerus, where there is a radial nerve passing through, and the distal humerus end flattens, widens, and is triangular and angled forward. The anterior aspect of the distal humerus has a olecranon fossa, the anterior aspect has a coronal fossa, the medial aspect has a ulnar nerve groove, and the ulnar nerve passes through, although there is a report of treating a humeral shaft comminuted fracture by using a humeral medial approach, a anterior approach and a posterior approach minimally invasive bone fracture plate technology (MIPO), the medial aspect of the humerus has ulnar nerves and concomitant blood vessels passing through, the anterior aspect has median nerves, brachial arteries passing through and the distal coronal fossa, the lateral aspect has radial nerve stems passing through, and the posterior aspect has olecranon fossa, so that the bone fracture plate is placed on the medial, anterior, lateral and posterior aspects of the humerus with high operation difficulty and operation risk, and important blood vessels and nerves are easily damaged. The anatomical structure of the posterior and lateral parts of the distal humerus is flat, and no important nerves or blood vessels pass through, so that the optimal position for placing the anatomical bone plate is achieved, the proximal end of the bone plate can be fixed at the back of the diaphysis of the humerus, and the distal end of the bone plate is fixed at the back radial side column of the distal humerus.

At present, most bone plates for humerus fracture are designed in a plane, and in actual fixation, two ends of the fracture can be limited and fixed only from one plane; or the current bone plate designs are applied to proximal or distal humerus fixation, and when the middle section of the humerus is fractured in a comminuted manner, the stability of the bone plate is poor when both ends of the fracture are fixed, whether the bone plate is a single-plane bone plate or a bone plate for proximal or distal humerus fixation; the comminuted fracture of the middle section of the humerus, namely the fracture position of the humerus has completely lost the supporting force, the osteotomy plate is required to be completely fixed, when the uniplanar osteotomy plate is used for fixation, only the uniplanar force is applied, the two ends of the fracture are easy to deviate to the two sides, the fracture position cannot be recovered normally, and the fracture end is required to be corrected by a secondary operation.

Accordingly, there is a need for a bone plate that can stabilize and fix the two ends of a midfoot comminuted fracture humerus.

Disclosure of Invention

In order to solve the technical problems, the utility model designs the humerus minimally invasive bone fracture plate which adopts a spiral design form, and the end surfaces of the front section and the rear section are provided with angle differences so as to fix the fracture part at the torsion part, and the fracture part is coated in such a way that the fracture end cannot move to two sides.

In order to achieve the technical effects, the utility model is realized by the following technical scheme: a humeral minimally invasive bone plate comprising: a proximal locking portion, an intermediate connecting portion, and a distal locking portion;

the proximal locking part and the distal locking part are respectively and fixedly connected to two ends of the middle connecting part, and positioning holes are formed in the proximal locking part and the distal locking part;

the axis of the bone fracture plate is spiral, and an angle difference exists between a plane where the proximal locking part is located and a plane where the distal locking part is located;

further, the middle connecting part is spiral, and the deflection angle of the plane where the proximal locking part is located and the plane where the distal locking part is located is smaller than 90 degrees;

further, the middle connecting part is spiral, and the deflection angle of the plane where the proximal locking part is located and the plane where the distal locking part is located is equal to 90 degrees;

further, the middle connecting part is stepped with two staggered ends, and the deflection angle of the plane where the proximal locking part is positioned and the plane where the distal locking part is positioned is smaller than 90 degrees;

further, the middle connecting part is stepped with two staggered ends, and the deflection angle of the plane where the proximal locking part is positioned and the plane where the distal locking part is positioned is equal to 90 degrees;

the beneficial effects of the utility model are as follows:

the utility model abandons the traditional single-plane bone fracture plate, adopts a multi-plane cladding mode, fixes the fracture position of a patient from more than one direction, namely, the far end and the near end of the bone fracture plate have torsion angle difference in the application, wherein the middle connecting part in a spiral shape or a step shape is adopted for transition, and the constraint force from more than one direction is ensured at the fracture position; if the screw type is adopted, the screw type steel plate is adhered to the surface of the bone body to twist, and the fracture can be surrounded according to the screw degree, so that the left and right movement of the two ends of the fracture can be avoided; the dislocation type bone fracture plate is characterized in that the middle connecting part in a step type coats the fracture part, the limit supporting area of the fracture part is increased, and the dislocation part also coats the fracture part of a patient according to the dislocation degree;

compared with the prior art (single plane bone plate):

according to the angle fixing bone cutting plate, the cladding area and the angle of a fracture part are increased, so that two ends of the fracture cannot move to two sides, and the stability of humerus fracture fixation is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a humeral minimally invasive bone plate;

FIG. 2 is a schematic overall structure of embodiment 1 of the present utility model;

FIG. 3 is a schematic overall structure of embodiment 2 of the present utility model;

FIG. 4 is a schematic overall structure of embodiment 3 of the present utility model;

FIG. 5 is a front view of embodiment 3 of the present utility model;

in the drawings, the list of components represented by the respective reference numerals is as follows.

1-proximal locking part, 2-intermediate connecting part, 3-distal locking part, 4-locating hole.

Detailed Description

Example 1

Referring to fig. 1-2, a humeral minimally invasive bone plate, comprising: a proximal locking portion 1, an intermediate connecting portion 2, and a distal locking portion 3;

the proximal locking part 1 and the distal locking part 3 are respectively and fixedly connected to two ends of the middle connecting part 2, the proximal locking part 1 and the distal locking part 3 are respectively provided with a positioning hole 4, and a practical screw penetrates through the positioning holes 4 to fix the whole bone fracture plate on the fractured humerus of a patient;

the axis of the osteotomy guide plate is spiral, and the plane where the proximal locking part 1 is located and the plane where the distal locking part 3 is located have angle differences, so that the osteotomy plate wraps the humerus of the comminuted fracture from a plurality of angles;

in this embodiment, the middle connecting portion 2 is spiral, and the deflection angle of the plane where the proximal locking portion 1 is located and the plane where the distal locking portion 3 is located is smaller than 90 degrees; in practical application, the whole osteotomy plate is affected by the exposed bone tissue area of a patient, the left-right expansion distance is small, and when the torsion angle of the whole osteotomy plate is smaller than 90 degrees, the deflection angle is 45 degrees in the embodiment, so that the stability of the coated fracture part can be provided, the bone fracture plate can be ensured not to be excessively expanded left and right, and the trauma to the operation of the patient is reduced.

Example 2

This embodiment differs from the above-described embodiments in that the plane in which the proximal locking portion 1 is located and the plane in which the distal locking portion 3 is located are deflected by an angle equal to 90 degrees; at this time, the whole bone fracture plate basically belongs to an integral torsion state, the head end is arranged on the side face of the humerus, the tail end extends to the front face of the humerus, and the bone fracture plate is used for limiting the movement of the fracture end in the front-back left-right direction under the severe condition of the comminuted fracture, so that the fracture fixation stability of the bone fracture plate is improved.

Example 3

The difference between this embodiment and the above embodiment 1 is that the intermediate connection portion 2 is in a stepped shape with two staggered ends, and the staggered steps cover the fracture of the patient, so that more axial cladding area of the humerus can be provided, the displacement of the two ends of the fracture in the direction perpendicular to the axial direction is more limited, and the stability of the fracture is improved;

in this embodiment, the plane in which the proximal locking portion 1 is located and the plane in which the distal locking portion 3 is located are offset by an angle equal to or smaller than 90 degrees, and in general, the larger the offset angle is, the more suitable for the humeral fracture morphology in which the fracture is severe, as compared with the above embodiments 1, 2.

In summary, the present utility model eliminates the traditional single-plane bone fracture plate, adopts the multi-plane cladding mode, and fixes the fracture position of the patient from more than one direction, namely, the distal end and the proximal end of the bone fracture plate have torsion angle difference in the application, wherein the transition is performed by adopting the middle connecting part in the spiral shape or the step shape, so that the constraint force from more than one direction is ensured at the fracture position; if the screw type is adopted, the screw type steel plate is adhered to the surface of the bone body to twist, and the fracture can be surrounded according to the screw degree, so that the left and right movement of the two ends of the fracture can be avoided; the dislocation type bone fracture plate is characterized in that the middle connecting part in a step type coats the fracture part, the limit supporting area of the fracture part is increased, and the dislocation part also coats the fracture part of a patient according to the dislocation degree;

compared with the prior art (single plane bone plate):

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. A humeral minimally invasive bone plate comprising: a proximal locking portion, an intermediate connecting portion, and a distal locking portion;

the proximal locking part and the distal locking part are respectively and fixedly connected to two ends of the middle connecting part, and positioning holes are formed in the proximal locking part and the distal locking part; the bone fracture plate is characterized in that the axis of the bone fracture plate is spiral, and an angle difference exists between a plane where the proximal locking part is located and a plane where the distal locking part is located.

2. The humeral minimally invasive bone plate of claim 1, wherein the medial connection is helical and the proximal locking portion is at a plane and the distal locking portion is at a plane deflection angle of less than 90 degrees.

3. The humeral minimally invasive bone plate of claim 1, wherein the medial connection is helical and the proximal locking portion lies in a plane and the distal locking portion lies in a plane that is offset by an angle equal to 90 degrees.

4. The humeral minimally invasive bone plate of claim 1, wherein the medial connection is stepped with offset ends, and the proximal locking portion is in a plane and the distal locking portion is in a plane that is offset by an angle less than 90 degrees.

5. The humeral minimally invasive bone plate of claim 1, wherein the medial connection is stepped with offset ends, and the proximal locking portion is in a plane and the distal locking portion is in a plane offset angle equal to 90 degrees.