WO2018099040A1

WO2018099040A1 - Fibula locking plate

Info

Publication number: WO2018099040A1
Application number: PCT/CN2017/088092
Authority: WO
Inventors: 武勇; 刘南南; 袁文杰; 张兆家; 张月静
Original assignee: 武勇; 北京飞渡朗颐医疗器械有限公司
Priority date: 2016-11-30
Filing date: 2017-06-13
Publication date: 2018-06-07
Also published as: CN106725794A

Abstract

A fibula locking plate, comprising a body part (1) and a bulge part (2) for locking the lower end of the fibula. The bulge part (2) is provided at the lower end of the body part (1); a plurality of bolt holes (2), for bolts (7) to penetrate through, are respectively formed on the body part (1) and the bulge part (2); a plurality of operation needle holes (4), for operation needles to penetrate through, are formed on the bulge part (2); at least one positioning claw (5) adapted to be locked into the locked lower end of the fibula is provided at the edge of the bulge part (2); a groove (53) is formed at a root part (52) of the positioning claw (5) connected with the bulge part (2); the groove (53) is located in the back side of the positioning claw (5). By providing a positioning claw (5) and locking same on the locked lower end of the fibula, quick positioning for the fibula locking plate can be quickly realized and a stabilizing effect can be achieved; as a groove (53) is formed in the back side of the positioning claw (5), after the body part (1) is fixed with the bulge part (2) through the bolts (7), the positioning claw (5) can be broken at the groove (53) according to the practical condition of a patient, so that the fibula locking plate can meet different requirements.

Description

Humeral locking plate

Technical field

The invention relates to the technical field of locking steel plates for orthopedic surgery, in particular to a tibial locking plate.

Background technique

The lower jaw combined with the sacral ligament, posterior ligament, inferior transverse ligament and the distal part of the interosseous ligament, is one of the important components of the ankle joint.

The separation of the lower jaw is caused by the external rotation of the talus in the acupoint. Usually, the ankle fracture, especially the humeral fracture, is one of the commonly used methods. According to different types and degrees of injury, three kinds of surgery are used. method:

First: simple lower jaw combined reduction, cancellous bone screw fixation;

Second: the humerus fracture is fixed by plate fixation, and the lower jaw is fixed by the cancellous bone screw;

Third: the absorbing lag screw is fixed;

Ordinary humeral distal locking plate is difficult to locate during surgery. It is difficult for complicated and complicated fracture surgery, and it is not convenient for surgical operation. Moreover, the external distal locking plate of the distal radius lacks the threaded hole for joint fixation with the tibia. After the joint operation, the patient had a strong foreign body sensation.

The main problem of squat screw fixation is that the screw is loose, broken, prolonged the weight-bearing time, and needs to be surgically removed. Premature removal is not conducive to ligament healing, too late to limit ankle joint activity, ligament combined with permanent physiological barrier, joint function recovery is affected, and the chance of loosening of the screw is increased.

Summary of the invention

The object of the present invention is to overcome the deficiencies in the prior art and to provide a patella locking plate which is convenient to position and securely fastened.

The technical solution of the present invention provides a patella locking plate, comprising a main body portion and a ridge portion for locking a lower end of the tibia, the ridge portion being disposed at a lower end of the main body portion; and being respectively disposed on the main body portion and the ridge portion a plurality of screw holes for the passage of screws; on the ridges Providing a plurality of surgical needle holes for the surgical needle to pass through; at the edge of the ridge portion, at least one positioning claw for locking into the lower end of the locking tibia; and the positioning claw and the ridge portion are provided The root is provided with a groove; the groove is located on the back side of the positioning claw.

Further, three said positioning claws are disposed on the edge of the ridge; wherein two of the positioning claws are disposed at a lower end of the ridge; one of the positioning claws is disposed at a side of the ridge side.

Further, the positioning claw has an arc shape and extends toward a back side of the ridge; the end of the positioning claw has a tip end portion.

Further, the main body portion, the ridge portion and the positioning claw are integrally formed.

Further, at least one semi-circular screw hole is provided on a side of the main body portion.

Further, the semi-circular screw holes enable angular adjustment of the screws located in the semi-circular screw holes.

Further, the semi-circular screw hole has a trapezoidal longitudinal section; a radius of a top surface of the semi-circular screw hole is smaller than a radius of a bottom surface of the semi-circular screw hole.

Further, three positioning claws are disposed on the edge of the ridge; two of the positioning claws are disposed at a lower end of the ridge; one of the positioning claws is disposed at the ridge The side of the semicircular screw hole.

Further, two semicircular screw holes are disposed on a side of the main body portion; two of the semicircular screw holes are located on the same side of the main body portion and are spaced apart from each other.

Further, an adjustment thread capable of adjusting the angle of the screw is disposed in the screw hole.

The above technical solution has the following beneficial effects:

By setting the positioning claw, it can be locked to the lower end of the humerus, which can quickly realize the rapid positioning of the patella locking plate to achieve a stable effect, and a groove is arranged on the back side of the positioning claw, after the main body portion and the bulging portion are fixed by screws, according to In the actual situation of the patient, the positioning claw can be cut off from the groove to meet different needs.

DRAWINGS

1 is a perspective view of a tibial locking plate according to an embodiment of the present invention as seen from a front side;

2 is a perspective view of a tibial locking plate according to an embodiment of the present invention as seen from the back side;

Figure 3 is a schematic view of the screw and the semi-circular screw hole.

Reference mark comparison table:

1-body portion; 2-ridge portion; 3-screw hole;

4-surgical needle hole; 5-positioning claw; 51-tip;

52-root; 53-groove; 6-semi-circular screw hole;

7-screw.

detailed description

Specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. The same components are denoted by the same reference numerals.

It should be noted that the word "lower end" used in the following description refers to one end near the ankle joint, "back or back side" refers to one side or one side of the tibia after installation, and "front or front side" means after installation. On the side facing the muscle or the outside, "back-to-back" means on the opposite side.

As shown in FIG. 1-3, a sacral locking plate according to an embodiment of the present invention includes a main body portion 1 and a ridge portion 2 for locking a lower end of the tibia. The ridge portion 2 is disposed at a lower end of the main body portion 1.

A plurality of screw holes 3 for the passage of the screws 7 are provided on the main body portion 1 and the ridge portion 2, respectively.

A plurality of surgical needle holes 4 for the passage of the surgical needle are provided on the ridge portion 2.

At least one of the positioning claws 5 for locking the lower end of the locking tibia is provided at the edge of the ridge 2, and the root 52 of the positioning claw 5 that is in contact with the ridge 2 is provided with a groove 53 which is located at the back of the positioning claw 5. side.

That is, the patella locking plate is mainly composed of the main body portion 1, the ridge portion 2, and the positioning claw 3.

The screw holes 3 in the main body portion 1 and the bulging portion 2 are used for fixing the screws 7.

The surgical needle hole 4 on the ridge 2 is used to perform a surgical needle to treat a designated position.

The bulging portion 2 is integrally convex toward the positive side, and the back surface thereof is recessed toward the positive side, thereby forming a concave surface that is fitted to the shape of the lower end of the locking tibia for fixation.

The positioning claw 5 is disposed on the ridge 2 to perform a positioning function.

During the operation, the positioning claw 5 is first locked into the tissue locking the lower end of the humerus or its surrounding area to position the entire humeral locking plate.

Thereafter, the screws 7 are respectively driven into the screw holes 3 to be fixed.

In order to meet different needs, a groove 53 is provided on the back side of the root portion 52 of the positioning claw 5, and the positioning claw 5 can be detached from the groove 53.

The groove 53 is provided on the back side of the root portion 52 of the positioning claw 5 to facilitate the cutting of the positioning claw 5 to the positive side during the operation.

The width and groove depth of the groove 53 may be set to 1 mm, and of course, it may be arbitrarily set as needed, as long as it can be broken.

Preferably, as shown in Figures 1-2, three positioning claws 5 are provided on the edge of the ridge 2.

Two of the positioning claws 5 are arranged at the lower end of the ridge, and one positioning claw 5 is arranged on the side of the ridge, and each of the positioning claws 5 is fixed to one surface, thereby improving the fixing effect.

The length and curvature of the three positioning claws 5 are designed according to the anatomical structure, and the position is designed according to the fixed three-face structure. The anatomical design can quickly realize the positioning of the bone plate to achieve a stable effect and achieve rapid positioning.

Preferably, as shown in FIGS. 1-2, the positioning claw 5 has an arc shape and extends toward the back side of the ridge 2, and the end of the positioning claw 5 has a tip end portion 51.

The positioning claw 5 has an arc shape as a whole, resembles a cat claw, and has a tip end portion 51 for facilitating rapid positioning.

Preferably, the main body portion 1, the ridge portion 2 and the positioning claw 3 are integrally formed, which is easy to manufacture and improves the structural strength.

Preferably, the patella locking plate is a titanium alloy plate.

Preferably, as shown in FIGS. 1-2, at least one semi-circular screw hole 6 is provided on the side of the main body portion 1.

The semi-circular screw hole 6 is located 2 to 5 cm horizontally from the ankle surface, and the semi-circular screw hole 6 allows 1/2 of the screw cap to remain in the hole. The radius of the semi-circular screw hole 6 is 3/ of the screw diameter. 2. This makes the position selection of the implant screw 7 more flexible.

The semi-circular screw hole 6 is for driving the screw 7, and the tibia is fixed from the outside of the main body portion 1, and the semi-circular screw hole 6 is engaged with the screw 7 with respect to the screw hole at the intermediate position of the main body portion 1. Only a portion of the screw cap is below the upper surface of the body portion 1 to reduce localized bulging of the skin.

Preferably, the semi-circular screw hole 6 enables the screw 7 located in the semi-circular screw hole 6 to be made Angle adjustment allows for more options for the angle of the screw 7 into the tibia.

Preferably, as shown in FIG. 3, the semicircular screw hole 6 has a trapezoidal longitudinal section, and the radius of the top surface of the semicircular screw hole 6 is smaller than the radius of the bottom surface of the semicircular screw hole 6. The semi-circular screw hole 6 is designed to have a narrow upper side and a wide structure at the lower side, so that the angle at which the screw 7 is driven into the bone can be more selected. In this position, the spherical cap of the screw 7 and the semi-circular screw hole 6 cooperate with each other, and the stud is fixed through the semicircular screw hole 6 from the rear to the outside.

Preferably, as shown in FIGS. 1-2, three positioning claws 5 are provided on the edge of the ridge 2, wherein two positioning claws 5 are arranged at the lower end of the ridge 2, and one positioning claw 5 is arranged at the back of the ridge 2 On the side of the semi-circular screw hole 6, thereby achieving positioning and locking of the tibial locking plate from different directions.

Preferably, as shown in FIG. 1-2, two semicircular screw holes 6 are provided on the side of the main body portion 1, and the two semicircular screw holes 6 are located on the same side of the main body portion 1, and are spaced apart from each other. The setting can be made by inserting two screws 7 on the side to improve the fixing effect.

Preferably, the screw hole 3 is provided with an adjustment thread capable of adjusting the angle of the screw 7, so that the screw 7 can be angularly adjusted in the screw hole 3 to achieve fine adjustment in the direction.

The adjustment thread is machined to a certain angle of inclination on the thread base so that the screw can be tilted to adjust the direction.

In summary, the sacral locking plate provided by the invention has the advantages of simple structure, convenient positioning, and firm installation, thereby improving the surgical effect.

According to the needs, the above technical solutions can be combined to achieve the best technical effect.

The foregoing is merely illustrative of the principles and preferred embodiments of the invention. It should be noted that a number of other variations can be made by those skilled in the art based on the principles of the present invention and should be considered as the scope of the present invention.

Claims

A patella locking plate includes a main body portion and a ridge for locking a lower end of the tibia, the ridge portion being disposed at a lower end of the main body portion;

a plurality of screw holes for the passage of screws are respectively disposed on the main body portion and the ridge portion;

Providing a plurality of surgical needle holes for the surgical needle to pass through the ridge;

The feature is that at least one positioning claw for locking the lower end of the locking tibia is disposed at an edge of the ridge;

a groove is disposed at a root portion of the positioning claw that is in contact with the ridge portion;

The groove is located on the back side of the positioning claw.
The patella locking plate according to claim 1, wherein three of the positioning claws are disposed on the edge of the ridge;

Two of the positioning claws are disposed at a lower end of the ridge;

One of the positioning claws is disposed at a side of the ridge.
The tibial locking plate according to claim 1 or 2, wherein the positioning claw has an arc shape and extends toward a back side of the ridge;

The end of the positioning claw has a tip end portion.
The tibial locking plate according to claim 3, wherein the main body portion, the ridge portion, and the positioning claw are integrally formed.
The tibial locking plate according to claim 1, wherein at least one semicircular screw hole is provided on a side of the main body portion.
The tibial locking plate of claim 5 wherein said semi-circular screw holes enable angular adjustment of said screws located in said semi-circular screw holes.
The tibial locking plate according to claim 6, wherein the semicircular screw hole has a longitudinal section of a trapezoid;

The radius of the top surface of the semicircular screw hole is smaller than the radius of the bottom surface of the semicircular screw hole.
The tibial locking plate according to any one of claims 5-7, wherein three of the positioning claws are disposed on the edge of the ridge;

Two of the positioning claws are disposed at a lower end of the ridge;

One of the positioning claws is disposed on a side of the ridge portion facing away from the semicircular screw hole.
The tibial locking plate according to claim 8, wherein two semicircular screw holes are provided on a side of the main body portion;

Two of the semicircular screw holes are located on the same side of the main body portion and are spaced apart from each other.
The patella locking plate according to claim 1, wherein an adjustment thread capable of adjusting an angle of the screw is provided in the screw hole.