阅读说明：本技术 一种可调式胫骨高位截骨外固定器 (Adjustable external fixator for high tibial osteotomy ) 是由 王全 秦泗河 王永娜 邵波 张力 赵博 石磊 岳孝太 王伟世 秦绪磊 王执宇 于 2019-09-09 设计创作，主要内容包括：本发明公开一种可调式胫骨高位截骨外固定器,包括胫骨近端钢针固定件、可锁定关节铰链和胫骨远端钢针固定件；胫骨近端钢针固定件后部的两侧分别与一可锁定关节铰链的一端连接,两个可锁定关节铰链的另一端分别与螺纹杆连接,胫骨远端钢针固定件包括水平连接件和与水平连接件垂直连接的竖直安装板,水平连接件通过调节螺母固定在螺纹杆上；胫骨近端钢针固定件前部和竖直安装板上均安装有钢针固定卡子。本发明结构设计合理,能够精准地治疗运动量较大、相对年轻患者的内侧间室膝骨性关节炎,达到精准矫正力线且矫正角度可控不会丢失的效果,同时小巧紧凑的结构设计能够最大程度减少给患者带来的不方便之处,创伤非常微小,实用性强。(The invention discloses an adjustable external fixator for high tibial osteotomy, which comprises a proximal tibial steel needle fixing piece, a lockable joint hinge and a distal tibial steel needle fixing piece; the two sides of the rear part of the steel needle fixing piece at the proximal end of the tibia are respectively connected with one end of a lockable joint hinge, the other ends of the two lockable joint hinges are respectively connected with a threaded rod, the steel needle fixing piece at the distal end of the tibia comprises a horizontal connecting piece and a vertical mounting plate vertically connected with the horizontal connecting piece, and the horizontal connecting piece is fixed on the threaded rod through an adjusting nut; the front part of the steel needle fixing piece at the proximal end of the tibia and the vertical mounting plate are both provided with steel needle fixing clips. The invention has reasonable structural design, can accurately treat the medial compartment knee osteoarthritis of a relatively young patient with larger amount of exercise, achieves the effects of accurate correction of the line of force and controllable correction angle without loss, and simultaneously has small and compact structural design, can reduce the inconvenience brought to the patient to the greatest extent, and has very small wound and strong practicability.)

1. The utility model provides a high position external fixation ware that cuts of shin bone which with adjustable which characterized in that: comprises a proximal tibia steel needle fixing piece, a lockable joint hinge and a distal tibia steel needle fixing piece; the two sides of the rear part of the steel needle fixing part at the proximal end of the tibia are fixedly connected with one end of one lockable joint hinge respectively, the other ends of the two lockable joint hinges are in threaded connection with a threaded rod respectively, the steel needle fixing part at the distal end of the tibia comprises a horizontal connecting part and a vertical mounting plate vertically connected with the horizontal connecting part, the two threaded rods simultaneously penetrate through the horizontal connecting part, and the horizontal connecting part is fixed on the threaded rod through an adjusting nut; threaded steel needle fixing clips are installed on the two sides of the front portion of the tibia near-end steel needle fixing piece respectively, and the steel needle fixing clips are installed on the upper surface of the tibia near-end steel needle fixing piece, the lower surface of the tibia near-end steel needle fixing piece and/or the vertical installation plate.

2. The adjustable external fixator for high tibial osteotomy according to claim 1, wherein: the tibia near-end steel needle fixing piece is a symmetrical disc-shaped fixing plate; two sides of the front part of the symmetrical disc-shaped fixing plate are respectively provided with a first threaded hole, and the first threaded holes are in threaded connection with the threaded steel needle fixing clips; the two sides of the rear part of the symmetrical disc-shaped fixing plate are respectively provided with a first mounting hole, and the first mounting holes are used for mounting the lockable joint hinge.

3. the adjustable external fixator for high tibial osteotomy according to claim 2, wherein: the upper surface and the lower surface of shin bone near-end steel needle mounting set up a second screw hole respectively, two the second screw hole is central symmetry and sets up, steel needle fixing clip pass through the bolt with the second screw hole is connected.

4. The adjustable external fixator for high tibial osteotomy according to claim 2, wherein: the lockable joint hinge comprises a first joint part and a second joint part hinged with the first joint part, the outer ends of the first joint part and the second joint part are respectively provided with a third threaded hole and a fourth threaded hole, the third threaded hole is connected with the first mounting hole through a bolt, and a long anti-loose nut is arranged between the third threaded hole and the first mounting hole; the fourth threaded hole is in threaded connection with the threaded rod.

5. The adjustable external fixator for high tibial osteotomy according to claim 1, wherein: the horizontal connecting piece is installed one side middle part of vertical mounting panel, set up two on the horizontal connecting piece and be used for wearing to establish the second mounting hole of threaded rod, a plurality of fifth screw holes that are used for the installation of steel needle retaining clip are seted up at the interval on the vertical mounting panel, each the axis of fifth screw hole is parallel, the axis perpendicular to of second mounting hole the axis of fifth screw hole.

6. the adjustable external fixator for high tibial osteotomy of claim 5, wherein: the vertical mounting plate is evenly provided with 4 fifth threaded holes at intervals, and every two adjacent steel needle fixing clips in the fifth threaded holes are respectively positioned on two sides of the vertical mounting plate.

7. The adjustable external fixator for high tibial osteotomy according to claim 1, wherein: one end of the threaded steel needle fixing clip is an external thread end, the other end of the threaded steel needle fixing clip is provided with a first concave arc-shaped clamping groove, and an opening of the first concave arc-shaped clamping groove is opposite to the plane during installation.

8. The adjustable external fixator for high tibial osteotomy according to claim 1, wherein: and a sixth threaded hole is formed in one end of the steel needle fixing clip, a second concave arc-shaped clamping groove is formed in the other end of the steel needle fixing clip, and an opening of the second concave arc-shaped clamping groove is opposite to the plane during installation.

9. The adjustable external fixator for high tibial osteotomy of claim 7, wherein: and after the external thread end of the threaded steel needle fixing clip is connected with the tibia near-end steel needle fixing piece, the bottom of the external thread end is connected with a locking nut.

10. the adjustable external fixator for high tibial osteotomy of claim 5, wherein: the horizontal connecting piece and the vertical mounting plate are integrally formed.

Technical Field

The invention belongs to the field of medical instruments, relates to an orthopedic external fixation technology, and particularly relates to an adjustable external tibial high-position osteotomy fixator.

background

The most commonly used proximal tibial high level osteotomies are medial open wedge tibial high level osteotomy (MOWHTO) and closed wedge HTO osteotomy steel plate internal fixation, as well as the tibial sub-tuberosity osteotomy, Ilzarov ring external fixation.

Of these, medial open wedge high-bone osteotomy (MOWHTO) and closed wedge HTO osteotomy steel plate internal fixation, as shown in fig. 10, have the following disadvantages:

(1) the bone is cut and the steel plate is installed, so that the wound is large;

(2) the medial condyle needs to be lifted once in the operation, and an osteotomy gap or bone grafting is generated;

(3) The medial condyle can be lifted at one time, the X-ray of the full-length position of the lower limb can not be shot in the operation, and the force line can not be accurately corrected;

(4) The steel plate needs to be dismantled after the operation, so that secondary damage is caused;

(5) If bone grafting is not carried out during the operation, the healing time can be influenced or bone nonunion can be caused.

Meanwhile, the Ilzarov ring-type external fixation of the tibial subtenon osteotomy, as shown in fig. 11, has the following disadvantages:

(1) The external fixing frame is thick, heavy and complex, and seriously influences the daily activities and lives of patients;

(2) The number of the steel needles is large, and the needle path nursing difficulty is large.

it can be seen that it is a technical problem to provide an external fixation device for high tibial osteotomy that overcomes the above drawbacks.

disclosure of Invention

The invention aims to provide an adjustable external fixator for high tibial osteotomy, which has the advantages of reasonable structural design, small wound and capability of accurately correcting a force line, and can reduce inconvenience brought to a patient to the greatest extent.

in order to achieve the purpose, the invention provides the following scheme:

The invention provides an adjustable external fixator for high tibial osteotomy, which comprises a proximal tibial steel needle fixing piece, a lockable joint hinge and a distal tibial steel needle fixing piece; the two sides of the rear part of the steel needle fixing part at the proximal end of the tibia are fixedly connected with one end of one lockable joint hinge respectively, the other ends of the two lockable joint hinges are in threaded connection with a threaded rod respectively, the steel needle fixing part at the distal end of the tibia comprises a horizontal connecting part and a vertical mounting plate vertically connected with the horizontal connecting part, the two threaded rods simultaneously penetrate through the horizontal connecting part, and the horizontal connecting part is fixed on the threaded rod through an adjusting nut; threaded steel needle fixing clips are installed on the two sides of the front portion of the tibia near-end steel needle fixing piece respectively, and the steel needle fixing clips are installed on the upper surface of the tibia near-end steel needle fixing piece, the lower surface of the tibia near-end steel needle fixing piece and/or the vertical installation plate.

Optionally, the tibia near-end steel needle fixing piece is a symmetrical disc-shaped fixing plate; two sides of the front part of the symmetrical disc-shaped fixing plate are respectively provided with a first threaded hole, and the first threaded holes are in threaded connection with the threaded steel needle fixing clips; the two sides of the rear part of the symmetrical disc-shaped fixing plate are respectively provided with a first mounting hole, and the first mounting holes are used for mounting the lockable joint hinge.

optionally, the upper surface and the lower surface of the tibia near-end steel needle fixing piece are respectively provided with a second threaded hole, the second threaded holes are arranged in a centrosymmetric mode, and the steel needle fixing clips are connected with the second threaded holes through bolts.

optionally, the lockable joint hinge includes a first joint part and a second joint part hinged to the first joint part, the outer ends of the first joint part and the second joint part are respectively provided with a third threaded hole and a fourth threaded hole, the third threaded hole is connected to the first mounting hole through a bolt, and a long locknut is arranged between the third threaded hole and the first mounting hole; the fourth threaded hole is in threaded connection with the threaded rod.

Optionally, the horizontal connecting piece is installed in the middle of one side of the vertical mounting plate, two second mounting holes used for penetrating the threaded rod are formed in the horizontal connecting piece, a plurality of fifth threaded holes used for mounting the steel needle fixing clip are formed in the vertical mounting plate at intervals, the axis of each fifth threaded hole is parallel, and the axis of each second mounting hole is perpendicular to the axis of each fifth threaded hole.

Optionally, 4 fifth threaded holes are uniformly formed in the vertical mounting plate at intervals, and every two adjacent steel needle fixing clips in the fifth threaded holes are respectively located on two sides of the vertical mounting plate.

optionally, one end of the threaded steel needle fixing clip is an external thread end, the other end of the threaded steel needle fixing clip is provided with a first concave arc-shaped clamping groove, and an opening of the first concave arc-shaped clamping groove is opposite to the plane during installation.

Optionally, one end of the steel needle fixing clip is provided with a sixth threaded hole, the other end of the steel needle fixing clip is provided with a second concave arc-shaped clamping groove, and an opening of the second concave arc-shaped clamping groove is opposite to the plane during installation.

optionally, after the external thread end of the threaded steel needle fixing clip is connected with the tibia near-end steel needle fixing piece, a locking nut is connected to the bottom of the external thread end.

Optionally, the horizontal connecting piece and the vertical mounting plate are integrally formed.

Compared with the prior art, the invention has the following technical effects:

The adjustable external fixator for high tibial osteotomy has reasonable structural design, the distal steel needle fixing piece of the tibia can be relatively slidably adjusted on the threaded rod through the adjusting nut, and the degree of freedom of the external fixator can be effectively improved by matching the rotatable characteristic of the lockable joint hinge and the rotatable adjusting characteristic of the installation angle of each steel needle fixing clip, so that the accurate correction force line is achieved, the integrity of the backbone is kept, the correction angle is controllable and cannot be lost, and the practicability is good. Meanwhile, compared with the prior art, the invention also has the following advantages:

1. can accurately treat the medial compartment knee osteoarthritis of a relatively young patient with large exercise amount;

2. When in use, fibula osteotomy is not carried out, so that the injury of common peroneal nerve is avoided;

3. The small and compact structural design can reduce inconvenience brought to patients to the greatest extent, and the wound is very small;

4. the osteogenesis adjustment can be gradually prolonged, the controllability recovery is realized, and autogenous or allogeneic bone grafting or bone gap formation is avoided;

5. controllable healing, less time is needed;

6. Can not generate complications such as hinge fracture, delayed or abnormal healing of osteotomy surface, deep vein thrombosis and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in 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 invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic structural view of an adjustable external fixator for high tibial osteotomy according to the present invention;

FIG. 2 is a schematic view of the adjustable external fixator for high tibial osteotomy of the present invention;

FIG. 3 is a schematic structural view of the proximal tibial steel needle mount of the present invention;

FIG. 4 is a schematic structural view of a lockable joint hinge according to the present invention;

FIG. 5 is a schematic structural view of the distal tibial steel needle mount of the present invention;

FIG. 6 is a schematic view of a threaded rod of the present invention;

FIG. 7 is a schematic view of an adjusting nut according to the present invention;

FIG. 8 is a schematic structural view of the threaded steel pin retaining clip of the present invention;

FIG. 9 is a schematic structural view of the steel needle fixing clip of the present invention;

FIG. 10 is a schematic structural view of an internal fixator for HTO steel plates;

FIG. 11 is a schematic structural view of a prior Ilizarov ring-type external fixator;

Wherein the reference numerals are: 1. a proximal tibia steel needle fixing piece; 11. a first threaded hole; 12. a first mounting hole; 13. a second threaded hole; 2. the joint hinge can be locked; 21. a first joint member; 211. a third threaded hole; 22. a second joint member; 221. a fourth threaded hole; 23. a long locknut; 3. a distal tibial steel needle mount; 31. a horizontal connecting member; 311. a second mounting hole; 32. a vertical mounting plate; 321. a fifth threaded hole; 4. a threaded rod; 5. adjusting the nut; 6. the steel needle with screw thread fixes the checkpost; 61. an externally threaded end; 62. a first concave arc-shaped clamping groove; 7. a steel needle fixing clip; 71. a sixth threaded hole; 72. a second concave arc-shaped clamping groove; 8. a steel needle; 9. a tibia; 10. and locking the nut.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide an adjustable external fixator for high tibial osteotomy, which has the advantages of reasonable structural design, small wound and capability of accurately correcting a force line, and can reduce inconvenience brought to a patient to the greatest extent.

based on the technical scheme, the invention provides an adjustable external fixator for high tibial osteotomy, which comprises a proximal tibial steel needle fixing piece, a lockable joint hinge and a distal tibial steel needle fixing piece; the two sides of the rear part of the tibia near-end steel needle fixing piece are respectively fixedly connected with one end of a lockable joint hinge, the other ends of the two lockable joint hinges are respectively in threaded connection with a threaded rod, the tibia far-end steel needle fixing piece comprises a horizontal connecting piece and a vertical mounting plate vertically connected with the horizontal connecting piece, the two threaded rods simultaneously penetrate through the horizontal connecting piece, and the horizontal connecting piece is fixed on the threaded rod through a regulating nut; threaded steel needle fixing clips are respectively installed on the two sides of the front portion of the tibia near-end steel needle fixing piece, and steel needle fixing clips are installed on the upper surface of the tibia near-end steel needle fixing piece, the lower surface of the tibia near-end steel needle fixing piece and/or the vertical installation plate.

The adjustable external fixator for the high tibial osteotomy has reasonable structural design, the distal steel needle fixing piece of the tibia can be relatively slidably adjusted on the threaded rod through the adjusting nut, and the degree of freedom of the external fixator can be effectively improved by matching the rotatable characteristic of the lockable joint hinge and the rotatable adjustment characteristic of the installation angle of each steel needle fixing clip, so that the effects of accurately correcting a force line, keeping backbone integrity and being controllable and not lost in correction angle can be achieved, meanwhile, the knee osteoarthritis of medial compartments of young patients with larger exercise amount can be accurately treated, the inconvenience brought to the patients can be furthest reduced through the small and compact structural design, the wound is very small, and the practicability is high.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.