CN214632258U

CN214632258U - Locking plate for osteotomy of children

Info

Publication number: CN214632258U
Application number: CN202120047879.0U
Authority: CN
Inventors: 张佳洋; 史春宝; 郭静; 杨珊
Original assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Current assignee: Beijing Chunlizhengda Medical Instruments Co Ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-11-09
Anticipated expiration: 2031-01-08

Abstract

The utility model provides a children cut bone lockplate, including first plate body and second plate body, wherein, at least one locating hole has been seted up on the first plate body, liftoff location nail of installing separately in the locating hole, at least one locking hole has been seted up on the second board ladder, liftoff locking screw of installing separately in the locking hole the axis of location nail with the second plate body is preset the angle, it is 80-150 to preset the angle. In the use process, after the orthopedic angle is determined, the osteotomy plate is placed at the position needing to be corrected, then the positioning nail is driven in, and the locking screw is implanted for fixing and tightening. Thereby realizing the fixation and the positioning of the osteotomy correction position and solving the technical problem of difficult osteotomy correction and positioning of children in the prior art.

Description

Locking plate for osteotomy of children

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a children cut bone lockplate.

Background

In the medical treatment process, if positioning and deformity correction are needed to be carried out on the osteotomy of the child, the osteotomy needs to be positioned. For example, when the distal condylar fracture or deformity of the femur in a child, in the case of retaining the femoral joint, it is necessary to perform a correction angle for the patient's femoral varus first and then perform osteotomy. For another example, when a child is turning a femur valgus, a correction angle is determined first for the patient's femoral varus with the hip joint remaining, and then an osteotomy is performed.

Therefore, it is an urgent need to solve the problem of providing a locking plate for osteotomy to effectively fix the osteotomy site for achieving a certain angle of correction and positioning.

SUMMERY OF THE UTILITY MODEL

The utility model provides a locking plate for osteotomy of children, which at least partially solves the technical problems of the prior art that the osteotomy of children is corrected and difficult to position.

In order to solve the technical problem, the utility model provides a children cut bone lockplate, include:

the first plate body is provided with at least one positioning hole, and a positioning nail is detachably arranged in the positioning hole;

the second plate body is provided with at least one locking hole, and a locking screw is detachably arranged in the locking hole;

the axis of the positioning nail and the second plate body form a preset angle, and the preset angle is 80-150 degrees.

Furthermore, three groups of positioning holes are formed, the hole centers of the three positioning holes are connected into an isosceles triangle, and each positioning hole is correspondingly provided with the positioning nail.

Further, the axes of the positioning nails are parallel.

Further, the preset angle formed by the axis of each positioning nail and the second plate body is 90 degrees.

Furthermore, the axes of the two positioning holes at the bottom of the isosceles triangle are parallel to each other by connecting the centers of the holes, and the axes of the two groups of positioning holes and the second plate body form the preset angle.

Further, the preset angle formed by the positioning hole with the two parallel axes and the second plate body is 140 degrees.

Further, the first plate body and the second plate body are both made of carbon fiber reinforced polyetheretherketone.

Furthermore, the locking holes are multiple and distributed along the length direction of the second plate body.

Furthermore, the locking holes are four groups, and all the locking holes are uniformly distributed along the length direction of the second plate body.

Further, the locking hole is a non-circular hole.

The utility model provides a children cut bone lockplate includes first plate body and second plate body, wherein, at least one locating hole has been seted up on the first plate body, liftoff location nail of installing separately in the locating hole, at least one locking hole has been seted up on the second board ladder, liftoff locking screw of installing separately in the locking hole the axis of location nail with the second plate body is preset the angle, it is 80-150 to preset the angle. In the use process, after the orthopedic angle is determined, the osteotomy plate is placed at the position needing to be corrected, then the positioning nail is driven in, and the locking screw is implanted for fixing and tightening. Thereby realizing the fixation and the positioning of the osteotomy correction position and solving the technical problem of difficult osteotomy correction and positioning of children in the prior art.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of an embodiment of a locking plate for osteotomy of children provided by the present invention;

FIG. 2 is a side view of the pediatric osteotomy locking plate of FIG. 1;

fig. 3 is a schematic structural view of a locking plate for osteotomy of children provided by the present invention in another embodiment;

figure 4 is a side view of the pediatric osteotomy locking plate of figure 3.

Description of reference numerals:

100-first board body 200-second board body

1-first positioning hole 2-second positioning hole 3-third positioning hole 4-first locking hole

5-second locking hole 6-third locking hole 7-fourth locking hole 8-positioning nail

9-locking screw

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 presented herein only to illustrate and explain the present invention, and not to limit the present invention.

In a specific embodiment, the locking plate for osteotomy of the utility model comprises a first plate 100 and a second plate 200, wherein the first plate 100 is provided with at least one positioning hole, a positioning nail 8 is detachably mounted in the positioning hole, the second plate ladder is provided with at least one locking hole, and a locking screw 9 is detachably mounted in the locking hole; the axis of the positioning nail 8 and the second plate body 200 form a preset angle, and the preset angle is 80-150 degrees.

In an actual product, three groups of positioning holes can be formed, the hole centers of the three positioning holes are connected into an isosceles triangle, and each positioning hole is correspondingly provided with the positioning nail 8. And a plurality of groups of positioning holes are arranged so as to ensure the positioning reliability of the osteotomy locking plate.

Specifically, when the number of the positioning holes is multiple, the axes of the positioning nails 8 are parallel, and the preset angle formed between the axis of each positioning nail 8 and the second plate body 200 is 90 °, so as to be suitable for correcting the distal supracondylar fracture and deformity of the child femur. At this time, the axes of the two positioning holes at the bottom of the isosceles triangle are parallel to each other, and the axes of the two positioning holes form the preset angle with the second board 200.

In an embodiment, as shown in fig. 1 and fig. 2, taking a pediatric osteotomy locking plate suitable for the correction of the distal condylar fracture and deformity of the pediatric femur as an example, the preset angle formed between the axis of the positioning nail 8 of the pediatric osteotomy locking plate and the second plate 200 is 90 °, and for the convenience of description, three positioning holes are respectively named as a first positioning hole 1, a second positioning hole 2 and a third positioning hole 3, and four locking holes are respectively named as a first locking hole 4, a second locking hole 5, a third locking hole 6 and a fourth locking hole 7.

In the using process, firstly, the correction angle needs to be determined, calculation is carried out according to the correction angle and the selected bone fracture plate angle, then the angle osteotomy positioner is adjusted, the guide pins are driven in for positioning, the osteotomy positioner with the angle adjusted in advance is installed and fixed, then three positioning guide pins are driven in, the osteotomy positioner and the initially driven positioning guide pins are removed, the osteotomy is carried out by using a matched instrument and a pendulum saw, and then the femur is adjusted to the correction position. The guide sleeve is screwed into the first positioning hole 1 and the second positioning hole 2 of the children osteotomy locking plate, then the positioning guide pin which is previously pressed into the first positioning hole 1 and the second positioning hole 2 is introduced, the exposed guide pin is measured by using the depth measuring ruler, the length of the subsequently implanted positioning nail 8 is determined, the guide pin and the guide sleeve are removed, then the positioning nail 8 is sequentially implanted into the first positioning hole 1, the second positioning hole 2 and the third positioning hole 3, if the femoral shaft is coaxial with the bone fracture plate, the locking screw 9 is sequentially implanted into the first locking hole 4, the second locking hole 5, the third locking hole 6 and the fourth locking hole 7 for fixation, and then the locking screw is screwed down. If the femoral shaft is not coaxial with the stem of the bone plate, the inward moving stabilizer is screwed into the first locking hole 4 and the fourth locking hole 7, the lower limb force line is adjusted by adjusting the inward moving position of the femoral shaft by using the inward moving stabilizer, then the locking screws 9 are implanted into the second locking hole 5 and the third locking hole 6, and then the inward moving stabilizer is taken down and the locking screws 9 are implanted.

In another embodiment, as shown in fig. 3 and 4, for example, the pediatric osteotomy locking plate for pediatric hip osteotomy is adapted for pediatric valgus, and the positioning hole with two parallel axes forms a predetermined angle of 140 ° with the second plate 200. For convenience of description, three positioning holes are named as a first positioning hole 1, a second positioning hole 2 and a third positioning hole 3, and four locking holes are named as a first locking hole 4, a second locking hole 5, a third locking hole 6 and a fourth locking hole 7, that is, the axes of the first positioning hole 1 and the second positioning hole 2 are parallel to each other, and the preset angle formed by the first positioning hole 1 and the second positioning hole 2 and the second plate 200 is 140 °.

In use, the angle of the patient needing osteotomy correction is first determined, and if the patient is a femur is varus, the pediatric hip osteotomy plate can be selected. After the correction angle is determined, calculation is carried out according to the correction angle and the selected bone fracture plate angle, then the osteotomy positioner with the adjusted angle is driven into the guide pin for positioning, the osteotomy positioner with the adjusted angle in advance is installed and fixed, then three positioning guide pins are driven into the osteotomy positioner, the osteotomy positioner and the initially driven positioning guide pin are removed, the osteotomy is carried out by using a matched instrument and a pendulum saw, and then the femur is adjusted to the correction position. The method comprises the steps of screwing guide sleeves into a first positioning hole 1 and a second positioning hole 2 of a pediatric hip osteotomy plate, then transferring three previously-pressed positioning guide pins into the first positioning hole 1, the second positioning hole 2 and a guide pin hole, measuring the exposed guide pin by using a depth measuring ruler, determining the length of a subsequently-implanted screw, removing the guide pin and the guide sleeve, then sequentially implanting positioning screws 8 into the first positioning hole 1, the second positioning hole 2 and a third positioning hole 3, and if a femoral shaft is coaxial with a bone fracture plate, sequentially implanting locking screws 9 into a first locking hole 4, a second locking hole 5, a third locking hole 6 and a fourth locking hole 7 for fixation and then screwing. If the femoral shaft and the bone plate stem are not coaxial, the inward moving stabilizer is screwed into the first locking hole 4 and the fourth locking hole 7, the lower limb force line is adjusted by adjusting the inward moving position of the femoral shaft by using the inward moving stabilizer, then the second locking hole 5 and the third locking hole 6 are implanted with screws, and then the inward moving stabilizer is taken down and the locking screw 9 is implanted.

In various embodiments, the materials of the first plate body 100 and the second plate body 200 are both carbon fiber reinforced polyetheretherketone. The utility model discloses a raw and other materials are different from traditional metal material (titanium, titanium alloy), and the use is the non-metallic material of carbon fiber reinforcement PEEK. PEEK: the polyether-ether-ketone is a special engineering material with excellent properties of high temperature resistance, self-lubrication, easy processing, high mechanical strength and the like. The PEEK is the material closest to human skeleton because of its advantages of no toxicity, light weight, abrasion resistance, etc., and can be organically combined with human body, and the carbon fiber reinforced PEEK has further improved mechanical property, chemical corrosion resistance, radiation resistance, high temperature resistance, etc. The carbon fiber reinforced PEEK material is used for manufacturing the osteotomy locking plate, so that cold welding can be avoided from the source, and the carbon fiber reinforced PEEK material is an ideal insulator and cannot generate electrolytic reaction with other ions in human tissue fluid. And according to the characteristics of the carbon fiber reinforced PEEK material, the strength of the carbon fiber reinforced PEEK material is completely comparable to that of titanium alloy, and the carbon fiber reinforced PEEK material does not need to be anodized, thereby being beneficial to the implementation of the environment-friendly work of enterprises.

Further, in order to improve the locking reliability, the locking holes are plural, and the locking holes are distributed along the length direction of the second plate body 200. For example, the locking holes are four groups, and the locking holes are uniformly distributed along the length direction of the second plate body 200. In addition, in order to facilitate the adjustment of the axial locking position, the locking hole is a non-circular hole, and the diameter of the second plate 200 in the length direction is larger than that in the width direction, and may be, for example, a strip-shaped hole or a waist-shaped hole.

In the above specific embodiment, the utility model provides a children cut bone lockplate includes first plate body 100 and second plate body 200, wherein, at least one locating hole has been seted up on the first plate body 100, liftoff location nail 8 of installing in the locating hole liftoff, at least one locking hole has been seted up on the second board ladder, liftoff locking screw 9 of installing of liftoff in the locking hole liftoff axis of location nail 8 with second plate body 200 is preset angle, preset angle is 80-150. In use, after the orthopedic angle is determined, the osteotomy plate is placed at the position to be corrected, the positioning nail 8 is driven in, and the locking screw 9 is implanted for fixing and tightening. Thereby realizing the fixation and the positioning of the osteotomy correction position and solving the technical problem of difficult osteotomy correction and positioning of children in the prior art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

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

Claims

1. A pediatric osteotomy locking plate, comprising:

the plate comprises a first plate body (100), wherein at least one positioning hole is formed in the first plate body (100), and a positioning nail (8) is detachably mounted in the positioning hole;

the second plate body (200) is provided with at least one locking hole, and a locking screw (9) is detachably mounted in the locking hole;

the axis of the positioning nail (8) and the second plate body (200) form a preset angle, and the preset angle is 80-150 degrees.

2. The children's osteotomy locking plate according to claim 1, wherein three sets of positioning holes are opened, the connecting lines of the centers of the three positioning holes form an isosceles triangle, and each positioning hole is correspondingly installed with the positioning nail (8).

3. The pediatric osteotomy locking plate as defined in claim 2 wherein the axes of each of said locating pegs (8) are parallel.

4. The pediatric osteotomy locking plate according to claim 3, wherein the axis of each of said positioning pins (8) is at a predetermined angle of 90 ° with respect to said second plate (200).

5. The children's osteotomy locking plate as defined in claim 2, wherein the axes of said two positioning holes connecting the centers of said two positioning holes forming the base of said isosceles triangle are parallel, and the axes of said two positioning holes form said predetermined angle with said second plate (200).

6. The pediatric osteotomy locking plate according to claim 5, wherein said positioning holes with two parallel axes are at a predetermined angle of 140 ° with respect to said second plate (200).

7. The pediatric osteotomy locking plate according to anyone of claims 1-6, wherein the material of said first plate (100) and said second plate (200) are both carbon fiber reinforced polyetheretherketone.

8. The pediatric osteotomy locking plate according to any one of claims 1-6, wherein said locking hole is a plurality of locking holes, each of said locking holes being distributed along a length of said second plate (200).

9. The pediatric osteotomy locking plate as defined in claim 8 wherein said locking apertures are in four sets, each of said locking apertures being evenly distributed along a length of said second plate (200).

10. The pediatric osteotomy locking plate of claim 9 wherein said locking hole is a non-circular hole.