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Backbone internal fixing system

A fixation system and backbone technology, applied in the field of medical devices, can solve problems such as difficulty in locking nails, multiple small incisions, stress shielding, etc., and achieve the effects of no stress shielding, easy expansion angle, and good reset

Inactive Publication Date: 2012-07-25
杨永竑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of intramedullary nail internal fixation systems, commonly used are plum blossom nails, Ender nails, Rush nails, rectangular plate intramedullary nails, interlocking intramedullary nails, etc., while interlocking intramedullary nails are currently the mainstream type, and others However, interlocking intramedullary nails also have their own defects: first, multiple small incisions are required; second, locking nails are difficult to lock in; third, there are also problems of stress concentration and stress shielding.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A backbone internal fixation system includes an internal fixation device, an implantation and removal device 4 and a surgical fixation device 5 . The internal fixation device includes a first intramedullary fixation plate 1 , a second intramedullary fixation plate 2 and an embedded elliptical cylinder 3 .

[0037] Such as Figure 1-4 , the first intramedullary fixation plate 1 is a curved plate with a length of 26-40cm, a width of 6-8mm, and a thickness of 2mm. The width direction of the first intramedullary fixation plate 1 is arc-shaped, and the first intramedullary fixation plate 1 The two ends are the near end and the far end respectively, and the near end is provided with a first through hole 12, the first through hole 12 is a circular hole, and the far end has a certain radian, which is convenient for insertion and does not harm the human body; the distance from the far end is 30- A slope-shaped first protrusion 11 is provided at a distance of 50 mm. The first pr...

Embodiment 2

[0046] Such as Figure 13 , 14 , Internal fixation system for tibial shaft fractures.

[0047]Implantation process: Make a longitudinal subcutaneous incision of about 5 cm on the inner side of the upper end of the tibia to expose the upper end of the tibia, and drill a bone hole on the inner side and ream the hole; use the implantation and removal device 4 to place the first intramedullary fixation plate 1 and The second intramedullary fixation plate 2 is implanted into the hole, enters along the medullary cavity (to reduce the fracture) and passes through the fracture line into the distal end of the backbone, so that the two are surrounded by a hollow elliptical cylinder in the medullary cavity; then the surgical fixation device is used 5 Fix the first intramedullary fixation plate 1 and the second intramedullary fixation plate 2, use the implantation and removal device 4 to insert the embedded elliptical cylinder 3 from the round hole 53 into the surrounding hollow elliptic...

Embodiment 3

[0050] Such as Figure 13 , 15 , Internal fixation system for femoral shaft fractures.

[0051] Implantation process: Make an incision about 6 cm behind and above the greater trochanter of the hip to expose the greater trochanter, drill a small hole with a bone awl in the concave part and ream the hole, drill a bone hole from the inner side of the upper end of the femur and ream the hole; use implantation and The removal device 4 implants the first intramedullary fixation plate 1 and the second intramedullary fixation plate 2 into the hole, enters along the medullary cavity (reduces the fracture) and passes through the fracture line into the distal end of the bone, so that the two are in the medullary cavity Encircle to form a hollow elliptical cylinder; then use the surgical fixation device 5 to fix the first intramedullary fixation plate 1 and the second intramedullary fixation plate 2, and use the implantation and removal device 4 to insert the embedded elliptical cylinder...

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Abstract

The invention relates to a medical appliance, in particular to an orthopedic backbone internal fixing system, which comprises an internal fixing device, an implanting and taking-out device (4) and a surgical fixing device (5). The internal fixing device comprises a first intramedullary fixing plate (1), a second intramedullary fixing plate (2) and an embedded elliptical cylinder (3); the first intramedullary fixing plate (1) is provided with a first bump (11); the second intramedullary fixing plate (2) is provided with a second bump (21); and one end of the embedded elliptical cylinder (3) is provided with a third through hole (31), the other end of the embedded elliptical cylinder (3) is conical, and the conical top end of the embedded elliptical cylinder (3) has a certain radian. According to the technical scheme, the backbone internal fixing system is easy to be implanted, is fixed well relatively, and is few in incision and trauma, free of stress shielding, easy in operation and low in surgical risk, a dilating angle is easy to be adjusted, and after the backbone internal fixing system is implanted, fracture reduction is good.

Description

technical field [0001] The invention relates to medical equipment, in particular to an orthopedic backbone internal fixation system. Background technique [0002] There are two main types of internal fixation for diaphysis fractures, intramedullary nails and plate fixation systems. The latter has a wide range of surgical stripping, large damage, and biomechanical defects such as stress shielding and stress concentration after fixation, and is mostly used for fracture types that are not suitable for intramedullary nailing. There are many types of intramedullary nail internal fixation systems, commonly used are plum blossom nails, Ender nails, Rush nails, rectangular plate intramedullary nails, interlocking intramedullary nails, etc., while interlocking intramedullary nails are currently the mainstream type, and others However, interlocking intramedullary nails also have their own defects: firstly, multiple small incisions are required; secondly, locking nails are difficult t...

Claims

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Application Information

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IPC IPC(8): A61B17/72A61B17/92
Inventor 杨永竑
Owner 杨永竑
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