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Internal supporting type fixing device for femoral neck fracture

A technology for femoral neck fracture and fixation device, which is applied in the field of orthopedic devices, can solve the problems of unstable fixation with an expandable intramedullary nail, high difficulty in operation, loosening and displacement of fractures, etc. Large, effective fixation effect

Pending Publication Date: 2022-04-01
孙秀钦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new design allows for better control over blood vessel injuries caused by hip joints due to their internal supports made up from special materials like titanium mesh instead of traditional metal rods used during surgery. These brackets have specific structures designed specifically for easy insertion into the patient's own tissue while still providing stability when attached to the iliac crest. They allow precise movement without damaging the surrounding area around them, resulting in improved outcomes such as reduced complications related to these treatments.

Problems solved by technology

This patented technical problem addressed in this Patents relates to improving the stability and safety of implanted hip joint prosthetic components during surgery due to their potential harm caused by excessive stress placed upon them through compression screw wires. Existing solutions involve expandable structures made up entirely of metal materials like stainless steel plating, ceramic material, etc., making these techniques challenged because they require accurate adjustment while also being time-consuming and expensive compared to other options available today.

Method used

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  • Internal supporting type fixing device for femoral neck fracture
  • Internal supporting type fixing device for femoral neck fracture
  • Internal supporting type fixing device for femoral neck fracture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The existing intramedullary nails used for femoral neck fractures are expanded in the femoral head in the form of expansion wires, thereby strengthening the femoral neck fractures; however, the existing intramedullary nails actually support the femoral neck through the outward extrusion force of the expansion , in actual use, when only relying on the expansion pressure for fixation, the accuracy of the expansion pressure is highly required. When the expansion pressure is too large, it is easy to cause damage to the inner cavity of the femoral head, and even cause bone fractures. When the expansion pressure is small, it will Gradually loosening, the connection at the femoral neck cannot be guaranteed, but due to the different sizes of the femoral head bone cavity, the expansion pressure needs to be controlled by the operator with experience and feel, which is inconvenient to use; and thus it can be seen from the accompanying drawings of the above patent that When the intr...

Embodiment 2

[0047] The difference between Embodiment 2 and Embodiment 1 lies in that the connectors used are different.

[0048] Such as Figure 8 As shown, the connecting piece used to connect the driving arm and the driving block in the femoral neck fracture internal support fixation device provided in this embodiment is a traction rope, and the two ends of the traction rope are respectively connected to the driving block and the driving arm, and The pin shaft used to install the hook in the hinged seat is matched with a torsion spring. The torsion spring will drive the hook to rotate around the pin shaft in a natural state and conflict with the outer wall of the medullary nail body. When in use, when the driving block is lowered When moving, the driving arm will be pulled by the traction rope to drive the hook claw to overcome the torsion spring to rotate outward around the hinge. Rotate, reset, and recover, so that the tail end of the hook and the nail body are in close contact with ...

Embodiment 3

[0050] When the femoral neck fracture internal support fixation device provided in Example 2 is in use, since the angle between the retracted hook and the nail body is fixed, the actual use may be caused by the difference in the shape of the inner wall of the femoral cavity. The unfolded claws cannot be stuck on the hard shoulder of the femoral head cavity on the front side of the femoral neck fracture at the same time, and the pressure on each claw is different, thus giving the femoral neck fracture a fixation effect.

[0051] In order to solve the above problems, the distraction end and the medullary nail body in the femoral neck fracture internal support fixation device provided in this embodiment are installed together in a universal connection, specifically:

[0052] Such as Figure 9-10 As shown, the traction end 4 includes a connecting section 43 coaxial with the main body of the medullary nail, and a conical guiding section 44 is fixed on the top of the connecting sect...

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Abstract

The invention discloses a femoral neck fracture internal supporting type fixing device which comprises an abutting plate matched with the femur in an attached mode, a medullary nail body is inserted in the abutting plate, a control channel penetrating through the medullary nail body is formed in the medullary nail body in the axial direction, and the top end of the medullary nail body is obliquely arranged in a femoral bone through the femoral neck along the femur and connected with a traction end. A control cavity communicated with the interior of the medullary nail body is formed in the traction end, a plurality of hooking claws are arranged on the outer edge of the traction end at intervals along the circumference, the top ends of the hooking claws are hinged to the traction end, and the tail ends of the hooking claws abut against the outer wall of the medullary nail body; the expansion type intramedullary nail is unique in structure and convenient to use, the problems that when an existing expansion type intramedullary nail is used, the operation difficulty coefficient is large, and the risk is high can be effectively solved, and the problems that the existing expansion type intramedullary nail is not firmly fixed, and the fracture position is prone to loosening and displacement are effectively solved.

Description

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Claims

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Application Information

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Owner 孙秀钦
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