CN216933423U

CN216933423U - Locking plate for tibia

Info

Publication number: CN216933423U
Application number: CN202122715286.XU
Authority: CN
Inventors: 陈纯纯; 董浩; 许奎雪; 荀世界
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-07-12
Anticipated expiration: 2031-11-08

Abstract

The present invention provides a locking plate for a tibia, comprising: the body is positioned on the outer layer, and the body is positioned in the body; wherein the solid body and the porous inner layer structure are both in a large shape. The advantages are that: the adoption outside establishes the solid body, inside establishes the mode of porous inner layer structure, has guaranteed the intensity of lockplate promptly, makes the bone that can form in fracture department after the implantation again simultaneously and grows into, improves biomechanics stability, promotes the healing.

Description

Locking plate for tibia

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a locking plate for a tibia.

Background

The tibia far-end outer side locking plate is mainly used for treating tibia far-end outer side fracture, has the advantages of good internal fixation, small wound, simplicity in operation and the like, is more favorable for anatomical reduction of fracture by using guide pin temporary fixation, can be used for functional exercise of postoperative patients, and is the most ideal method for treating tibia far-end outer side fracture at present.

However, the locking plate of the prior structure still has a plurality of defects, such as: the anatomical matching degree of the bent part is poor, so that the bent part is extremely unstable in the use process, and comminuted fracture is easy to occur, so that the fracture reduction effect cannot occur; if the used material is completely a steel plate structure, the joint with the bone can not well form bone ingrowth, the biomechanical stability is poor, and the deformity healing of the later-stage fracture part is easy to cause.

SUMMERY OF THE UTILITY MODEL

The utility model provides a locking plate for tibia, which aims to overcome at least one technical defect, so that the locking plate can better perform bone ingrowth and improve the stability of the locking plate.

In order to realize the purpose of the utility model, the utility model provides the following technical scheme:

a locking plate for a tibia, comprising: comprises a solid body positioned at an outer layer and a porous inner layer structure positioned in the solid body; wherein the solid body and the porous inner layer structure are both in a large structure.

Preferably, the entity body comprises an upper entity part, two lower entity parts arranged in a mirror image manner, and a first mesh part arranged in a mirror image manner, wherein the upper entity part, the lower entity parts and the first mesh part form a large shape, a plurality of first fixed hole assemblies are arranged on the entity body, and the plurality of first fixed hole assemblies are positioned at the upper parts of the upper entity part and the two lower entity parts, so that the plurality of first fixed hole assemblies form a human shape on the entity body;

wherein, No. one netted portion is used for laminating in sclerotin surface after buckling.

Preferably, a first guide pin hole and at least one first locking hole are formed in the lower entity part, and a gap is formed between the first guide pin hole and the first locking hole.

Preferably, the top of the upper solid part is provided with at least one first guide pin hole.

The utility model discloses a locking plate for shin bones, which has the advantages that: the utility model adopts the mode of arranging the solid body outside and the porous inner layer structure inside, thereby not only ensuring the strength of the locking plate, but also forming bone ingrowth at the fracture part after implantation, improving the biomechanical stability and promoting healing;

in addition, the structure design of the first mesh part and the second mesh part in the structure of the utility model can be bent to 'embrace' the freely reduced bone blocks, meanwhile, other materials can be implanted to promote the rapid healing of the fracture, and the motion degree of the naked joint cannot be influenced by the deformity caused by pressure in the later period.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the drawings:

FIG. 1 is a schematic view of a locking plate for a tibia according to the present invention;

FIG. 2 is a schematic structural view of a porous inner layer structure;

wherein:

the body 1, the upper body 11, the lower body 12, the first guide pin hole 121, the first locking hole 122, the first mesh part 13, the first fixing hole assembly 14, the second locking hole 141, the pressurizing hole 142;

a porous inner layer structure 2, a second fixed hole component 21, a second net part 22, a second guide pin hole 23 and a third locking hole 24.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

In order to enable the locking plate to form bone ingrowth at the fracture part after being implanted, improve the biomechanical stability and promote healing, the utility model provides a locking plate for tibia, which is combined with the locking plate shown in figures 1 and 2, and comprises: the solid body 1 is positioned at the outer layer, and the porous inner layer structure 2 is positioned in the solid body 1; wherein the solid body 1 and the porous inner layer structure 2 are both in a large shape;

more specifically, it is preferable that the thickness of the solid body 1 is 3mm, and the porous inner layer structure 2 is 1 mm; the locking plate structure is printed integrally by using a 3D technology, the thickness and the size of the locking plate structure are controllable, the strength and the fixing area of the locking plate structure are not influenced, the locking plate structure is easier to place and is beneficial to healing of skin tissues. Preferably, the locking plate structure is made of aluminum alloy.

In a specific embodiment, according to fig. 1, in order to further enhance the stability and the bone fusion after the locking plate is implanted, the solid body 1 includes an upper solid portion 11, two lower solid portions 12 arranged in a mirror image, and two first mesh portions 13 arranged in a mirror image, the upper solid portion 11, the lower solid portions 12, and the first mesh portions 13 form a "big" shape, a plurality of first fixing hole assemblies 14 are disposed on the solid body 1, and a plurality of the first fixing hole assemblies 14 are disposed on the upper solid portion 11 and the upper portions of the two lower solid portions 12, so that a plurality of the first fixing hole assemblies 14 form a "human" shape on the solid body 1, and the locking plate is firmly fixed by the first fixing hole assemblies 14 after the locking plate is implanted; the first mesh part 13 is used for being attached to the surface of a bone after being bent, so that the influence on the motion degree of a naked joint due to deformed healing caused by pressure is avoided;

preferably, two adjacent first number fixation hole assemblies 14 are spaced 11mm apart and fit 3.5mm screws.

Specifically, the lower entity portion 12 is provided with a first guide pin hole 121 and at least one first locking hole 122, and a gap is formed between the first guide pin hole 121 and the first locking hole 122; the locking plate is temporarily fixed on the tibia of the patient by inserting the guide pin into the first guide pin hole 121, so that subsequent operation can be smoothly performed; the arrangement of the first locking hole 122 can assist the first guide pin hole 121 to perform temporary fixation in the early stage, so that accurate positioning is facilitated, and the locking plate can be firmly fixed at the fracture position by penetrating a locking screw through the first locking hole 122 in the later stage;

in order to enhance the fixing effect, the number one locking hole 122 is two, and the two number one locking holes 122 and the number one guide pin hole 121 on the lower entity portion 12 form a triangle in space, so that the stability of the triangle structure is stronger.

The top of the upper solid part 11 is provided with at least one first guide pin hole 121, and a guide pin can be temporarily fixed on the tibia of the patient through the first guide pin hole 121 on the upper solid part 11, so that accurate positioning is facilitated;

because the locking plate is of a large shape, the upper part and the lower part of the locking plate are respectively provided with the first guide pin hole 121, and the plurality of the first guide pin holes 121 form a triangle in space, and the triangle has special stability, the locking plate of the utility model is firmer when being temporarily fixed, thereby effectively improving the positioning accuracy, improving the success rate of the operation and ensuring that the healing degree of a patient is better.

In the embodiment, the number one fixing hole assembly 14 is composed of a number two locking hole 141 and a pressurizing hole 142, and the number two locking hole 141 and the pressurizing hole 142 are overlapped and communicated with each other. The second locking hole 141 can be used for conventional vertical locking, and the core of the pressurizing hole 142 is used for pressurizing and locking, so that the use is convenient, the structure is stable, and the surgical requirements can be met; preferably, the side arm of the second locking hole 141 is a tapered hole, and the pressurizing hole 142 is a slotted ball hole, so that the locking screw can be implanted in a certain angle direction, and the direction can be selected according to actual conditions when the locking screw is used.

In a specific embodiment, according to fig. 2, in order to facilitate bone ingrowth and promote healing after the locking plate of the present invention is implanted, a second number of fixing hole assemblies 21 corresponding to the first number of fixing hole assemblies 14, a second number of mesh portions 22 corresponding to the first number of mesh portions 13, a second number of guide pin holes 23 corresponding to the first number of guide pin holes 121, and a third number of locking holes 24 corresponding to the first number of locking holes 122 are arranged on the porous inner layer structure 2, and screws are simultaneously passed through the first number of fixing hole assemblies 4 and the second number of fixing hole assemblies 21 to fix the locking plate; a guide pin simultaneously passes through the first guide pin hole 121 and the second guide pin hole 23 (because the first guide pin hole 121 and the second guide pin hole 23 are correspondingly formed, the entity body 1 and the porous inner layer structure 2 are simultaneously fixed) to temporarily fix the locking plate, and the first locking hole 122 and the third locking hole 24 are the same;

in the embodiment, bone tissues pass through the solid body 1 and then enter the porous inner layer structure 2, so that bone of a patient grows in the porous inner layer structure 2, and then grow out of the solid body 1 to grow together with the bone of the patient, so that the long-term stability in the true sense is achieved, blood circulation is promoted, the fracture deformity is prevented from healing, sufficient bone growth is ensured, and the structure is consistent with the surface curvature of the bone of the patient;

in order to improve the bone growth effect, the porosity of the porous inner layer structure 2 is 50% -80%, the aperture of 40% is 100um-200um, and the aperture of 60% is 200um-400 um;

more specifically, in order to enhance the strength of the locking plate of the present invention, the second fixing hole assembly 21, the second guide pin hole 23, and the third locking hole 24 provided on the porous inner layer structure 2 are all solid holes.

In the utility model, the first mesh part 13 and the second mesh part 22 are both designed in irregular structures, different sizes can be designed according to requirements, when the first mesh part 13 and the second mesh part 22 are bent at the same time (here, because the first mesh part 13 and the second mesh part 22 correspond in structure, and the second mesh part 22 is sleeved in the first mesh part 13, the first mesh part 13 outside the locking plate can be bent, so that the purpose of bending the first mesh part 13 and the second mesh part 22 at the same time can be achieved, bone blocks after free reduction can be clasped at two sides of the locking plate, and meanwhile, in order to promote the healing speed of fracture, growth-promoting bone particles can be implanted on the first mesh part 13 and the second mesh part 22, so that the structure can not form pressure to cause abnormal healing to influence the activity of a naked joint in the later period.

The utility model is realized by the following steps:

1. attaching a locking plate to the surface of the fractured bone after fracture reduction, adjusting the position and placing the locking plate on the front outer side;

2. selecting a nail hole to drive a locking screw and a pressurizing screw into the bone;

3. bending the first mesh part and the second mesh part on two sides by using an instrument according to the curvature so as to hold the reset bone block;

4. then other screws are driven to complete the fixation.

The structures or principles detailed in the present invention are available to those skilled in the art through conventional techniques, and thus are not described in detail.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A locking plate for a tibia, characterized in that: comprises a solid body (1) positioned at the outer layer and a porous inner layer structure (2) positioned in the solid body (1); wherein the solid body (1) and the porous inner layer structure (2) are both in a large shape;

the solid body (1) comprises an upper solid part (11), two lower solid parts (12) arranged in a mirror image manner and a first mesh part (13) arranged in a mirror image manner, wherein the upper solid part (11), the lower solid parts (12) and the first mesh part (13) form a large shape, a plurality of first fixed hole assemblies (14) are arranged on the solid body (1), and the plurality of first fixed hole assemblies (14) are positioned on the upper solid part (11) and the upper parts of the two lower solid parts (12), so that the plurality of first fixed hole assemblies (14) form a human shape on the solid body (1);

wherein, the first mesh part (13) is used for being attached to the surface of a bone substance after being bent.

2. A locking plate for the tibia as recited in claim 1, wherein: a first guide pin hole (121) and at least one first locking hole (122) are formed in the lower entity portion (12), and a gap is formed between the first guide pin hole (121) and the first locking hole (122).

3. A locking plate for the tibia as recited in claim 1, wherein: the top of the upper entity part (11) is provided with at least one first guide pin hole (121).