Guiding device

By designing the support body and locking components of the guide device, the problem of screw guide misalignment was solved, achieving accuracy and stability in the connection between the intramedullary nail and the bone, and improving the success rate of prosthesis replacement surgery.

CN223586004UActive Publication Date: 2025-11-25BEIJING LIDAKANG TECH
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Patent Information

Application Number
CN202422496571.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-15
Publication Date
2025-11-25
Estimated Expiration
2034-10-15

AI Technical Summary

Technical Problem

In existing technologies, when an intramedullary nail is connected to the bone, the screw guide is prone to displacement under external force, which causes the screw to not be accurately inserted into the reserved installation hole of the intramedullary nail, resulting in failure of the prosthesis replacement surgery.

Method used

A guiding device is designed, including a support body, a guide, and a locking assembly. The support body is provided with a guide channel coaxial with the pre-drilled hole of the intramedullary nail. The locking assembly locks the support body between the predetermined prosthesis and the human bone. The guide is detachably installed in the guide channel to ensure that the guide hole is coaxial with the pre-drilled hole of the intramedullary nail and to prevent the guide from shifting.

Benefits of technology

This allows for precise alignment of the intramedullary nail pre-drilled hole during surgery, ensuring accurate screw insertion and improving the success rate and stability of prosthesis replacement surgery.

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Abstract

The utility model discloses a guiding device. The guiding device comprises a supporting body, a guider and a locking assembly. Wherein a guide channel is formed in the support main body, and the guide channel is configured to be coaxially arranged with a preformed hole of an intramedullary needle on a preset prosthesis when the support main body is mounted on the preset prosthesis. The guider is detachably arranged in the guide channel in a penetrating mode, a guide hole is formed in the guider, and the guide hole and the guide channel are coaxially arranged. The locking assembly is disposed on the support body, and the locking assembly is configured to lock the support body between a predetermined prosthesis and a human skeleton. The guiding device solves the problem that in the prior art, a screw used for locking the intramedullary needle and the femur cannot be accurately arranged in a reserved mounting hole of the intramedullary needle in a penetrating mode, and therefore a prosthesis replacement operation fails.
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