Minimally invasive intramedullary plate system

Abstract

The invention discloses a minimally invasive intramedullary plate system comprising an integrally formed intramedullary plate body. The intramedullary plate body is composed of an intramedullary part,an extramedullary part and a transition part connecting the two parts. The intramedullary part is in the long tube type, and the extramedullary part is attached to the epiphysis end and the articularsurface. A main body of the intramedullary part is provided with a locking nail hole, and a main body of the extramedullary part is provided with a locking threaded hole. The system combines the advantages of distal humeral plates, interlocking intramedullary nails and minimally invasive surgery techniques. The intramedullary part can provide static or dynamic fixation for the bone fracture, andsubstantially has no stress shielding effect. At the same time, the closed nailing operation mode is adopted to avoid exposure to the fracture end, protect the fractured part from hematoma, reduce damage and improve the fracture healing rate. The extramedullary part can provide a good supporting effect, and achieve the purpose of restoring the length of the fractured part, correcting the rotational displacement and correcting the force line at the same time to ensure early activities of a patient.

Description

technical field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a minimally invasive intramedullary plate system. Background technique

[0002] The purpose of treatment at the initial stage of fracture is to reduce and restore stability while preserving blood supply so that the patient and the affected limb can move early. In the past, the surgical treatment of fractures emphasized absolute stability to ensure direct bone healing, but now more emphasis is placed on biological, minimally invasive fracture fixation methods. Currently, the commonly used fracture treatment methods mainly include bone plate fixation and interlocking intramedullary nail fixation.

[0003] Joint fractures are different from diaphyseal fractures in that they require anatomical reduction and absolute stability to promote articular cartilage healing. Therefore, the best treatment for fractures involving joints is absolute rigid internal fixation, ...

Examples

Embodiment Construction

[0021] Below in conjunction with accompanying drawing, invention is described in further detail:

[0022] The indication of the minimally invasive intramedullary plate system of the present invention is multi-segment fracture of metaphysis and articular surface combined with bone fracture. The main application sites are the articular ends of long bones, including proximal / distal ulna, proximal / distal radius, proximal / distal humerus, proximal / distal femur, proximal / distal tibia and proximal / distal fibula end.

[0023] Figure 1-3 Shown are three embodiments of the present invention, representing three types of the intramedullary plate of the present invention, the intramedullary plate of the present invention includes an integrally formed intramedullary plate body, and the intramedullary plate body is composed of an intramedullary part 4 , an extramedullary part 1 and a transition part 3 connecting the two parts. The inside of the medulla is divided into a long tubular shape,...

technical field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a minimally invasive intramedullary plate system. Background technique

[0002] The purpose of treatment at the initial stage of fracture is to reduce and restore stability while preserving blood supply so that the patient and the affected limb can move early. In the past, the surgical treatment of fractures emphasized absolute stability to ensure direct bone healing, but now more emphasis is placed on biological, minimally invasive fracture fixation methods. Currently, the commonly used fracture treatment methods mainly include bone plate fixation and interlocking intramedullary nail fixation.

[0003] Joint fractures are different from diaphyseal fractures in that they require anatomical reduction and absolute stability to promote articular cartilage healing. Therefore, the best treatment for fractures involving joints is absolute rigid internal fixation, ...

Examples

Embodiment Construction

[0021] Below in conjunction with accompanying drawing, invention is described in further detail:

[0022] The indication of the minimally invasive intramedullary plate system of the present invention is multi-segment fracture of metaphysis and articular surface combined with bone fracture. The main application sites are the articular ends of long bones, including proximal / distal ulna, proximal / distal radius, proximal / distal humerus, proximal / distal femur, proximal / distal tibia and proximal / distal fibula end.

[0023] Figure 1-3 Shown are three embodiments of the present invention, representing three types of the intramedullary plate of the present invention, the intramedullary plate of the present invention includes an integrally formed intramedullary plate body, and the intramedullary plate body is composed of an intramedullary part 4 , an extramedullary part 1 and a transition part 3 connecting the two parts. The inside of the medulla is divided into a long tubular shape,...

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