CN217408944U

CN217408944U - Proximal tibia medial fracture dissection, locking and fixing system

Info

Publication number: CN217408944U
Application number: CN202123180038.6U
Authority: CN
Inventors: 张堃; 陆元章
Original assignee: Tianjin Zhengtian Medical Instrument Co Ltd; Beijing Naton Medical Technology Holdings Co Ltd
Current assignee: Tianjin Zhengtian Medical Instrument Co Ltd; Beijing Naton Medical Technology Holdings Co Ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-09-13
Anticipated expiration: 2031-12-17

Abstract

The utility model provides a proximal tibia inner side fracture dissection, locking and fixing system, which comprises an anterior inner side bone plate and a posterior inner side bone plate which are mutually independent, wherein the anterior inner side bone plate is integrally in a long strip shape and is used for being attached to the anterior inner side of the proximal tibia along the length direction of the tibia; the inboard hone lamella in back include first section and with first section is the second section of contained angle setting, first section be used for with shin bone near-end back inboard edge laminating, just the second section is used for following the length direction and the shin bone laminating of shin bone. The utility model discloses a locking fixing system is dissected to inboard fracture of shin bone near-end can select suitable hone lamella according to patient's fracture type when the operation, inboard hone lamella or the inboard hone lamella in back before can the exclusive use, inboard hone lamella and the inboard hone lamella in back before also can using simultaneously, can be applicable to multiple fracture condition.

Description

Proximal tibia medial fracture dissection, locking and fixing system

Technical Field

The utility model belongs to coaptation board field especially relates to a locking fixing system is dissected to inboard fracture of shin bone near-end.

Background

Since the proximal tibia bone may be fractured by trauma or other reasons, the damaged bone should be repaired correctly and in time by using the proximal tibia medial bone plate. Current proximal medial tibial plates have the following disadvantages:

firstly, the existing proximal tibia inner bone plate is generally in a T-shaped plate type, and when the proximal tibia inner bone plate is used, a doctor needs to perform plasticity again on the bone plate by using a bending tool according to the anatomical form of a patient bone; but can not completely conform to the proximal anatomical morphology of the tibia, so that surrounding soft tissues are easy to irritate, the pain of a patient is increased, deformed healing is caused, and complications such as poor joint function or chronic pain are caused. The overall dimension and specification of the bone plate used at present are large, the bone plate is suitable for the size of the tibia bone of European and American people, the anatomical form of the bone plate is inconsistent with that of Asian people, and due to the fact that the bone plate is not completely attached to the inner side of the proximal end of the tibia, the screw is stably fixed on the tibia, the holding force of the screw is not strong, and the risks of screw fixation and screw withdrawal are increased. Thirdly, the bone plate at the inner side of the proximal tibia is implanted at the inner side of the tibia, so that a doctor is very inconvenient to implant and fix the bone plate in the operation process, the operation time is prolonged, and the bleeding amount and the infection risk are increased; meanwhile, the direction of the screw of the bone plate is uncontrollable, the risk that the screw enters the proximal joint cavity of the tibia is high, and the joint is easily damaged.

At present, no corresponding anatomical steel plate exists for the surgical treatment of proximal and medial tibial fractures at home and abroad. The steel plate at other parts still needs to be temporarily pre-bent in the operation to be pasted with the inner side of the proximal end of the tibia for use, the strength and the application degree of the bent steel plate are reduced, and the firmness degree is correspondingly reduced to influence the treatment effect.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a locking fixing system is dissected to inboard fracture of shin bone near-end to the inboard bone fracture damage of shin bone near-end of better treatment asian patient, the inboard anatomical form of better cover shin bone near-end, and can provide better suitability and commonality for the patient.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an anatomical locking and fixing system for proximal medial tibial fractures comprises an anterior medial plate and a posterior medial plate which are independent from each other, wherein the anterior medial plate is integrally long-strip-shaped and is used for being attached to the anterior medial side of the proximal tibia along the length direction of the tibia; the inboard hone lamella in back include first section and with first section is the second section of contained angle setting, first section be used for with shin bone near-end back inboard edge laminating, just the second section is used for following the length direction and the shin bone laminating of shin bone.

As a preferable mode of the proximal medial tibia fracture anatomical locking and fixing system, the anterior medial bone plate includes a head portion, a trunk portion, and a tail portion, which are connected in sequence, the head portion is of an expanded structure, and the head portion is provided with a plurality of first screw holes which are distributed in an X shape.

As a preferable mode of the proximal medial tibial fracture anatomical locking fixation system, the stem portion is provided with a plurality of spaced second screw holes, and the tail of the screw engaged with the second screw holes is inclined toward the head.

As a preferable proposal of the proximal medial tibial fracture dissection, locking and fixing system, the tail part is in a wedge-shaped structure.

As a preferable scheme of the proximal medial tibial fracture anatomical locking and fixing system, the length of the first section ranges from 20mm to 100mm, and a plurality of third screw holes are arranged at intervals along the length direction of the first section.

As a preferable scheme of the proximal and medial tibia fracture dissection, locking and fixing system, a plurality of fourth screw holes are arranged at intervals in the length direction of the second section, and the tail of a screw matched with each fourth screw hole inclines towards the joint of the first section and the second section.

As a preferable proposal of the proximal medial tibia fracture dissection locking and fixing system, the thickness of the anterior medial bone plate and the thickness of the posterior medial bone plate are both in a range of 2mm-4 mm.

As a preferable proposal of the proximal medial tibia fracture dissection locking and fixing system, the anterior medial bone plate and the posterior medial bone plate are both made of medical pure titanium or titanium alloy.

As a preferable scheme of the proximal medial tibial fracture anatomical locking and fixing system, the head and the first section are both provided with a plurality of kirschner wire holes.

As a preferable scheme of the proximal medial tibia fracture anatomical locking and fixing system, a surface of the anterior medial bone plate, which is in contact with the bone, and a surface of the posterior medial bone plate, which is in contact with the bone, are provided with a plurality of contact limiting grooves which are arranged at intervals.

Compared with the prior art, the utility model discloses the medial fracture of shin bone near-end is dissected locking fixing system and is had following advantage:

the utility model discloses preceding inboard hone lamella and the inboard hone lamella mutually independent in the locking fixing system are dissected to shin bone near-end inboard fracture, consequently can select suitable hone lamella according to patient's fracture type when the operation, inboard hone lamella or the inboard hone lamella in back before can the exclusive use, inboard hone lamella and the inboard hone lamella in back before also can using simultaneously, can be applicable to multiple fracture condition, and can select according to the fracture condition at any time in the art, the operation time has been practiced thrift, the exposure time in the art has been reduced, the operation security and success rate have been improved.

Drawings

The accompanying drawings, which form a part hereof, 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 without undue limitation. In the drawings:

fig. 1 is a schematic view of an antero-medial plate and a postero-medial plate of an anatomical locking fixation system for proximal medial tibial fractures in an embodiment of the invention simultaneously secured to the medial proximal tibia;

FIG. 2 is a schematic view of the anterior medial plate and the posterior medial plate of the proximal medial tibial fracture anatomic locking fixation system of the present invention simultaneously secured to the medial proximal tibia at another angle in an embodiment of the present invention;

FIG. 3 is a side view of an antero-medial bone plate according to an embodiment of the present invention;

fig. 4 is a side view of a medial posterior plate in accordance with an embodiment of the invention.

Description of reference numerals:

1. an antero-medial bone plate; 11. a head portion; 12. a dry portion; 13. a tail portion; 111. a first screw hole; 121. a second screw hole;

2. a posterior medial lamina; 21. a first stage; 22. a second stage; 211. a third screw hole; 221. a fourth screw hole;

3. a Kirschner wire hole; 4. the contact groove is restricted.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 4, the present embodiment provides an anatomical locking fixation system for proximal medial fracture of tibia, comprising an antero-medial bone plate 1 and a postero-medial bone plate 2 which are independent from each other. Preceding inboard hone lamella 1 is whole to be rectangular shape and preceding inboard hone lamella 1 is used for along the preceding inboard laminating setting of shin bone length direction and shin bone near-end, and back inboard hone lamella 2 includes first section 21 and the second section 22 that is the contained angle setting with first section 21, and first section 21 is used for and the laminating of the inboard edge behind the shin bone near-end, and second section 22 is used for along the length direction and the shin bone laminating of shin bone.

In the embodiment, the front inner bone plate 1 and the back inner bone plate 2 in the proximal inner side fracture dissection, locking and fixing system of the tibia are independent from each other, so that a proper bone plate can be selected according to the fracture type of a patient during an operation, the front inner bone plate 1 or the back inner bone plate 2 can be used independently, the front inner bone plate 1 and the back inner bone plate 2 can be used simultaneously, the bone plate can be suitable for various fracture conditions, and the bone plate can be selected according to the fracture conditions at any time during the operation, so that the operation time is saved, the exposure time in the operation is shortened, and the operation safety and the success rate are improved.

In this embodiment, the anterior-medial bone plate 1 includes a head portion 11, a trunk portion 12, and a tail portion 13 connected in sequence, the head portion 11 is an enlarged structure and is disposed near the tibial plateau, the head portion 11 is provided with five first screw holes 111, and the five first screw holes 111 are distributed in an X shape. In other embodiments, the number of first screw holes 111 may be other, and it is sufficient that the antero-medial fracture can be stably fixed. The length of the head 11 along the length of the antero-medial bone plate 1 may range from 20mm to 60mm, for example, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm or 55 mm.

The stem portion 12 is provided along the length direction of the tibia, and a plurality of second screw holes 121 are provided at intervals on the stem portion 12, and the second screw holes 121 are arranged along the length direction of the stem portion 12. The tail of the screw that mates with the second screw hole 121 is inclined toward the head 11. The screws of the head part 11 and the screws of the stem part 12 of the anterior-medial bone plate 1 form a triangular frame structure, and can stably fix the anterior-medial fracture block.

The tail part 13 is arranged at the tail end of the dry part 12 and is in a wedge-shaped structure, so that when the front inner side bone plate 1 is implanted into a human body, the tail part 13 can be inserted from an incision more easily, and the pain of a patient in the treatment process is reduced. The end of the second section 22 is provided with a wedge-shaped structure, which is also convenient for implantation and reduces the pain of the patient.

In this embodiment, the first section 21 of the posterior medial plate 2 can be attached to the proximal posterior medial edge of the tibia, and the length of the second section 22 of the posterior medial plate 2 can be maintained substantially parallel to the length of the tibia. The first section 21 of the posterior medial plate 2 has a length in the range of 20mm to 100mm, e.g., 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm, 65mm, 70mm, 75mm, 80mm, 85mm, 90mm or 95mm, and a plurality of third screw holes 211 are provided at intervals along the length of the first section 21. The third screw hole 211 is a locking hole, a universal locking hole, a pressurizing hole, or a pressurizing locking combining hole. A plurality of fourth screw holes 221 are provided at intervals in the longitudinal direction of the second section 22, and the tails of the screws engaged with the fourth screw holes 221 are inclined toward the joint of the first section 21 and the second section 22. The screws of the first section 21 and the screws of the second section 22 of the rear inner bone plate 2 are in a triangular frame structure, so that stable fixation of a rear inner bone fracture block can be realized.

The thickness ranges of the front inner side bone plate 1 and the rear inner side bone plate 2 are both 2mm-4mm, the thickness is reduced, and irritation to soft tissues can be effectively avoided.

The length of the dry portion 12 and the second portion 22 are both in the range of 64mm to 320mm, and the width is in the range of 11mm to 22 mm. Can conform to the Asian human anatomy shape and can provide stable support at the correct reset position.

The front inner bone plate 1 and the back inner bone plate 2 are both made of medical pure titanium or titanium alloy, and have good biocompatibility. The edges of the front inner side bone plate 1 and the rear inner side bone plate 2 are both in a fillet structure, so that the soft tissue is prevented from being scratched by sharp edges.

The head 11 of the front inner bone plate 1 and the first section 21 of the rear inner bone plate 2 are both provided with a plurality of Kirschner wire holes 3, which are used for fixing short fractures or avulsion fractures with small stress and also used for temporarily fixing fracture blocks in the operation.

The contact surface of the front inner bone plate 1 and the bone and the contact surface of the back inner bone plate 2 and the bone are provided with a plurality of contact limiting grooves 4 which are arranged at intervals. The contact limiting groove 4 can reduce the contact area of the bone plate and periosteum, and better prevent the blood circulation of a patient from being damaged while treating the symptoms of the patient, so that the patient can recover more quickly.

In this embodiment, the screws that are engaged with the anterior medial plate 1 and the posterior medial plate 2 can be directed toward and fixed to the opposite bone of the bone plate, thereby achieving stable fixation of the anterior medial plate 1 and the posterior medial plate 2.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An anatomical locking fixation system for proximal medial tibial fractures, comprising: the tibia fragment comprises an anterior-medial bone plate (1) and a posterior-medial bone plate (2) which are independent from each other, wherein the anterior-medial bone plate (1) is integrally long-strip-shaped, and the anterior-medial bone plate (1) is used for being attached to the anterior inner side of the proximal end of the tibia along the length direction of the tibia; the back inner side bone plate (2) comprises a first section (21) and a second section (22) arranged at an included angle with the first section (21), the first section (21) is used for being attached to the back inner side edge of the proximal end of the tibia, and the second section (22) is used for being attached to the tibia along the length direction of the tibia.

2. The proximal medial tibial fracture anatomical locking fixation system of claim 1, wherein: the front inner side bone plate (1) comprises a head part (11), a stem part (12) and a tail part (13) which are sequentially connected, the head part (11) is of an expanded structure, the head part (11) is provided with a plurality of first screw holes (111), and the first screw holes (111) are distributed in an X shape.

3. The proximal medial tibial fracture anatomical locking fixation system of claim 2, wherein: the trunk part (12) is provided with a plurality of second screw holes (121) at intervals, and the tail of a screw matched with the second screw holes (121) inclines towards the head part (11).

4. The medial proximal tibial fracture anatomical locking fixation system of claim 2, wherein: the tail part (13) is of a wedge-shaped structure.

5. The medial proximal tibial fracture anatomical locking fixation system of claim 1, wherein: the length range of the first section (21) is 20mm-100mm, and a plurality of third screw holes (211) are arranged at intervals along the length direction of the first section (21).

6. The medial proximal tibial fracture anatomical locking fixation system of claim 1, wherein: a plurality of fourth screw holes (221) are formed in the second section (22) at intervals in the length direction, and the tail of a screw matched with the fourth screw holes (221) inclines towards the joint of the first section (21) and the second section (22).

7. The proximal medial tibial fracture anatomical locking fixation system of claim 1, wherein: the thickness ranges of the front inner bone plate (1) and the rear inner bone plate (2) are both 2mm-4 mm.

8. The proximal medial tibial fracture anatomical locking fixation system of claim 1, wherein: the front inner bone plate (1) and the rear inner bone plate (2) are both made of medical pure titanium or titanium alloy.

9. The proximal medial tibial fracture anatomical locking fixation system of any of claims 2 to 4, wherein: the head (11) and the first section (21) are provided with a plurality of Kirschner wire holes (3).

10. The proximal medial tibial fracture anatomical locking fixation system of any one of claims 1 to 8, wherein: the contact surface of the front inner bone plate (1) and the bone and the contact surface of the rear inner bone plate (2) and the bone are provided with a plurality of contact limiting grooves (4) which are arranged at intervals.