Locking external fixation frame plate system for limb long bone and short bone fracture dissection

Abstract

The invention relates to the technical field of locking external fixation for fracture dissection, in particular to a locking external fixation frame plate system for limb long bone and short bone fracture dissection. A present external fixation frame has the defects that the number of nails capable of being implanted in each fracture segment is limited, fixation is not exact, and the broken ends of a fractured bone are not stable; the present external fixation frame is too large in appearance and size, brings inconvenience to nursing and makes a patient likely to generate a sense of fear; the later-period fracture nonunion rate is high, and external fixation needs to be replaced with internal fixation after soft tissue becomes closed from being open. The locking external fixation frame plate system comprises a locking external fixation frame plate and screws matched with screw holes in the locking external fixation frame plate. The shape, length and width of the locking external fixation frame plate are matched with those of the dissection surface of a fracture, and the multiple locking screw holes are distributed in the plate. Small kirschner wire temporary fixation holes are formed among the screw holes or not, and one or more pressurization screw holes are formed or not. Each screw is divided into three segments, the front end of each screw body is a threaded part, the middle segment of each screw body is an unthreaded rod part, and the tail end of each screw is provided with a thread matched with the corresponding locking screw hole.

Description

technical field [0001] The invention relates to the technical field of anatomical locking external fixation for fractures, in particular to an anatomical locking external fixation frame plate system for long and short limb fractures, which can treat closed or open fractures of long and short tubular bones in adults, teenagers and children. Fixation system for in vitro fixation. Background technique [0002] Limb fractures can be divided into closed fractures and open fractures according to the integrity of the skin. For closed fractures, open reduction and titanium plate fixation or intramedullary nailing can be performed after limb detumescence. After the fracture healed, the internal fixation was removed in a second operation; open fractures could be debridement, reduction, and external fixation; ), and later removed and fixed according to the fracture healing. Currently available external fixators include: single-arm external fixator, combined external fixator, etc. T...

AI Technical Summary

Problems solved by technology

The characteristics of these external fixators can be summarized as follows: 1. The number of nails that can be placed in each fracture segment is limited, the fixation is not exact, and the broken end is unstable; 2. The shape and volume are too large, which is inconvenient for nursing, and the patient is prone to fear; 3. .The nonunion rate of late fractures is high, and it is often necessary to replace the internal fixation after the soft tissue changes from open to closed

Some scholars have also reported that external locking titanium plates are used to treat tibia and fibula fractures, but there are also the following disadvantages: 1. Since the screws used are fully threaded, they are highly irritating to the skin and other soft tissues and are prone to infection

2. The titanium plate and screws were originally designed for internal fixation, thin and compact, the thickness and width of the titanium plate are insufficient, and the thinner screws are insufficient in mechanical strength

3. It is not specially designed for external use, and sometimes requires multiple titanium plates to fix it

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