CN107961067B

CN107961067B - Lateral entry tibial intramedullary needle

Info

Publication number: CN107961067B
Application number: CN201810034214.9A
Authority: CN
Inventors: 段宏; 郎志刚; 熊燕; 余泽平; 刘宏远; 方向
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2021-05-07
Anticipated expiration: 2038-01-12
Also published as: CN107961067A

Abstract

The invention relates to a lateral entry tibial intramedullary needle, comprising a main body, wherein the main body includes a vertical section and a laterally curved section, the upper end of the vertical section is smoothly connected with the lower end of the laterally curved section, and the laterally curved section is laterally curved in the Y direction , the side bending section is provided with a first nail lane and a second nail lane, the first nail lane and the second nail lane are both parallel to the YZ plane, and the lower part of the vertical section has a third nail lane and a fourth nail lane The fourth nail lane is located below the third nail lane, the axis of the third nail lane is perpendicular to the axis of the fourth nail lane, and the third nail lane or the fourth nail lane is parallel to the XZ plane. The axes of the third and fourth nail lanes are both perpendicular to the axis of the vertical section, and the third nail lanes are parallel to the XZ plane. The invention can be entered by incision at the lower side of the tibial platform, without opening the knee joint, without incising the bone ligament, and protecting the joint and the ligament. Fracture reduction is not limited by the position, the operation is convenient, and the success rate of reduction is high; the second operation is also not limited by the position.

Description

Lateral inlet tibiobone marrow internal needle

Technical Field

The invention relates to the technical field of medical instruments, in particular to a lateral inlet tibia intramedullary needle.

Background

The existing intramedullary nail can only be cut into the nail just ahead of the tibial plateau, the knee joint needs to be opened, the patellar ligament can be damaged, and the knee joint must be bent to 100 degrees when the nail is inserted, the position is inconvenient to place, and the fracture is difficult to restore.

Disclosure of Invention

The invention aims to provide a lateral inlet tibial intramedullary pin which can be cut and accessed from the lateral side below a tibial platform without opening a knee joint or cutting bone ligaments, thereby protecting the joint and the ligaments.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

lateral entry shin bone intramedullary pin, including the main part, the main part includes vertical section and the section of bending on one's side, the upper end of vertical section is connected with the lower extreme smooth transition of the section of bending on one's side, and vertical section is parallel with the Z direction, and the section of bending on one's side is to Y direction side bend, be equipped with first nail way and second nail way on the section of bending on one's side, first nail way and second nail way all are parallel with the YZ plane, there are third nail way and fourth nail way in the lower part of vertical section, the fourth nail way is located third nail way below, and the axis that the third nail was said is perpendicular with the axis that the fourth nail was said, and third nail way or fourth nail way are parallel with the XZ plane. The Z direction is parallel to the Z axis of the three-dimensional coordinate system, the Y direction is parallel to the Y axis of the three-dimensional coordinate system, and the X direction is parallel to the Z axis of the three-dimensional coordinate system.

Furthermore, the axes of the third nail path and the fourth nail path are both perpendicular to the axis of the vertical section, and the third nail path is parallel to the XZ plane.

Wherein, first nail way and second nail way all are perpendicular with the lateral bending section.

Furthermore, a fifth nail path and a sixth nail path are arranged on the lateral bending section, the fifth nail path is vertically intersected with the sixth nail path, the fifth nail path and the sixth nail path are both vertical to the lateral bending section, and the fifth nail path and the sixth nail path form an included angle of 45 degrees with a YZ plane; the fifth nail path and the sixth nail path are positioned above the first nail path and the second nail path.

Furthermore, a seventh nail path is arranged between the first nail path and the second nail path, the seventh nail path is vertical to the lateral bending section, and the seventh nail path is parallel to the XZ plane.

Furthermore, the lower part of the vertical section is provided with an eighth nail path and a ninth nail path, the eighth nail path is vertically intersected with the ninth nail path, the eighth nail path and the ninth nail path are both vertical to the Z direction, and the eighth nail path and the ninth nail path form an included angle of 45 degrees with the XZ plane; the eighth nail path and the ninth nail path are positioned above the third nail path and the fourth nail path.

Preferably, the included angle between the vertical section and the side bent section on the YZ plane is 160-169 degrees.

Further preferably, the included angle between the vertical section and the side bent section on the XZ plane is 170-180 degrees.

Wherein, still include the staple with the staple track adaptation.

Further, the diameter of the upper end of the body is greater than or equal to the diameter of the lower end.

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

1. the invention can be cut from the outer side below the tibial plateau, the knee joint does not need to be opened, the bone ligament does not need to be cut, and the joint and the ligament are protected;

2. the fracture reduction is not limited by the body position, the operation is convenient, and the reduction success rate is high; the secondary operation taking out is not limited by the body position, and is convenient and quick.

Drawings

FIG. 1 is a front view of embodiment 1;

FIG. 2 is a side view of embodiment 1;

FIG. 3 is a schematic view of embodiment 1 with a staple installed;

FIG. 4 is a front view of embodiment 2;

FIG. 5 is a side view of embodiment 2;

FIG. 6 is a cross-sectional view at A in FIG. 4;

FIG. 7 is a cross-sectional view at B in FIG. 4;

in the figure: 1-main body, 2-tail cap, 3-fifth nail path, 4-sixth nail path, 5-first nail path, 6-second nail path, 7-seventh nail path, 8-eighth nail path, 9-ninth nail path, 10-third nail path, 11-fourth nail path and 12-fixing nail.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.

Example 1

As shown in fig. 1, 2 and 3, the lateral inlet tibio intramedullary nail disclosed in this embodiment includes a main body 1, a tail cap 2 is provided at the upper end of the main body, the main body 1 includes a vertical section and a lateral bending section, the upper end of the vertical section is smoothly and transitionally connected with the lower end of the lateral bending section, the vertical section is parallel to the Z direction, the lateral bending section is laterally bent to the Y direction, a first nail way 5 and a second nail way 6 are provided on the lateral bending section, both the first nail way 5 and the second nail way 6 are parallel to the YZ plane, a third nail way 10 and a fourth nail way 11 are provided at the lower part of the vertical section, the fourth nail way 11 is located below the third nail way 10, the axis of the third nail way 10 is perpendicular to the axis of the fourth nail way 11, and the third nail way 10 or the fourth nail way 11 is parallel to the XZ plane. As shown in fig. 3, the lateral access tibial intramedullary nail further comprises a fixing nail 12 adapted to the nail channel, and in use, the fixing nail 12 is arranged in the proper nail channel to fix the main body 1 according to requirements.

The axes of the third staple track 10 and the fourth staple track 11 are both perpendicular to the axis of the vertical section, and the third staple track 10 is parallel to the XZ plane. Wherein, the first nail path 5 and the second nail path 6 are both vertical to the lateral bending section. Preferably, the vertical section and the lateral bending section are at an angle of 160 ° to 169 ° in the YZ plane, and preferably the vertical section and the lateral bending section are at an angle of 164 ° in the YZ plane. The lateral bending section can be laterally bent towards the X direction besides laterally bent towards the Y direction, namely, the included angle between the vertical section and the lateral bending section on an XZ plane is 170-180 degrees.

Wherein the length of the lateral bending section is 7cm-15 cm. The diameter of the upper end of the main body 1 is larger than or equal to that of the lower end, the diameter of the upper end face of the main body 1 is 1cm-1.4cm, the diameter of the vertical section of the main body 1 is 0.7cm-1cm, and the lower end of the vertical section is round and blunt.

Example 2

This example differs from example 1 in that: as shown in fig. 4, 5 and 6, a fifth nail path 3 and a sixth nail path 4 are arranged on the lateral bending section, the fifth nail path 3 is vertically intersected with the sixth nail path 4, the fifth nail path 3 and the sixth nail path 4 are both vertical to the lateral bending section, and the fifth nail path 3 and the sixth nail path 4 form an included angle of 45 degrees with a YZ plane; the fifth staple track 3 and the sixth staple track 4 are located above the first staple track 5 and the second staple track 6.

A seventh nail path 7 is further arranged between the first nail path 5 and the second nail path 6, the seventh nail path 7 is perpendicular to the side bent section, and the seventh nail path 7 is parallel to the XZ plane.

As shown in fig. 4, 5 and 7, the lower part of the vertical section is provided with an eighth nail path 8 and a ninth nail path 9, the eighth nail path 8 is vertically intersected with the ninth nail path 9, the eighth nail path 8 and the ninth nail path 9 are both vertical to the Z direction, and the eighth nail path 8 and the ninth nail path 9 form an included angle of 45 degrees with the XZ plane; the eighth lane 8 and the ninth lane 9 are located above the third lane 10 and the fourth lane 11. When in use, the fixing nail 12 is arranged in the fifth nail path 3 or the sixth nail path 4 according to the requirement; and a fixing nail 12 is arranged in the eighth nail path 8 or the ninth nail path 9.

The invention can be cut from the outer side below the tibial plateau, the knee joint does not need to be opened, the bone ligament does not need to be cut, and the joint and the ligament are protected. The fracture reduction is not limited by the body position, the operation is convenient, and the reduction success rate is high; the secondary operation taking out is not limited by the body position, and is convenient and quick.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.

Claims

1. External entrance tibial intramedullary needle, comprising a main body (1), characterized in that: the main body (1) comprises a vertical section and a lateral bending section, and the upper end of the vertical section is smoothly connected with the lower end of the lateral bending section , the vertical section is parallel to the Z direction, the angle between the vertical section and the side bending section on the YZ plane is 160°-169°, and the angle between the vertical section and the side bending section on the XZ plane is 170° °-180°;

The side bending section is provided with a first nail channel (5) and a second nail channel (6), the first nail channel (5) and the second nail channel (6) are both parallel to the YZ plane, and the vertical section is The lower part has a third nail lane (10) and a fourth nail lane (11), the fourth nail lane (11) is located below the third nail lane (10), and the axis of the third nail lane (10) is the same as that of the fourth nail lane (11). The axis of the nail channel (11) is vertical, and the third nail channel (10) or the fourth nail channel (11) is parallel to the XZ plane;

The axes of the third screw channel (10) and the fourth screw channel (11) are both perpendicular to the axis of the vertical section, and the third screw channel (10) is parallel to the XZ plane;

The lower part of the vertical section has an eighth nail path (8) and a ninth nail path (9), the eighth nail path (8) and the ninth nail path (9) intersect perpendicularly, and the eighth nail path (8) and The ninth nail lane (9) is perpendicular to the Z direction, and the eighth nail lane (8) and the ninth nail lane (9) are at an angle of 45° with the XZ plane; the eighth nail lane (8) and the ninth nail lane (9) above the third nail lane (10) and the fourth nail lane (11);

The first nail channel (5) and the second nail channel (6) are both perpendicular to the side bending section;

The side bending section is provided with a fifth nail channel (3) and a sixth nail channel (4), the fifth nail channel (3) and the sixth nail channel (4) intersect perpendicularly, and the fifth nail channel (3) and The sixth nail channel (4) is perpendicular to the side bending section, the fifth nail channel (3) and the sixth nail channel (4) are at an angle of 45° with the YZ plane; the fifth nail channel (3) and the sixth nail channel The lane (4) is located above the first nail lane (5) and the second nail lane (6).

2. The lateral entry tibial intramedullary needle according to claim 1, characterized in that: a seventh screw channel (7) is further provided between the first screw channel (5) and the second screw channel (6), and the seventh screw channel (7) The nail channel (7) is perpendicular to the side bending section, and the seventh nail channel (7) is parallel to the XZ plane.

3. The lateral entry tibial intramedullary needle according to claim 1, further comprising a fixing nail (12) adapted to the nail channel.

4. The lateral entry tibial intramedullary needle according to claim 1, wherein the diameter of the upper end of the main body (1) is greater than or equal to the diameter of the lower end.