CN2537357Y - Femur middle and far section retrograde intramedullary nail - Google Patents

Abstract

The utility model relates to a retrograde intra-medullary nail for the middle and distal femur, belonging to the medical instrument field, which comprises a shank, a tip and a tail. The utility model is characterized in that the connection part of the shank and the tail is bent, the shank is cone-round shaped, the tail is triangular-prism-shaped, and the tail is cylinder-shaped; the shank is provided with an elliptical hole, the tail is provided with a round hole, and a wire hole is arranged on the end of the tail; wherein, the major axis of the elliptical hole is parallel to the axis line of the shank, the centerline of the elliptical hole and the centerline of the round hole form an angle. The utility model has the advantages of strong anti-breakage and anti-rotation capability and avoidance of impairment to the blood vessel and nerve on the inner side of the femur. The utility model is suitable for the surgical treatment of various fractures for the middle and distal femur, and is more particularly suitable for complex fractures, nonunion bones and malunions.

Description

Section retrograde intramedullary nail far away in the femur

(1) technical field: this utility model belongs to medical instruments field.

(2) background technology: at present, section fracture far away is comparatively common in the femur, and clinical operation method commonly used has the steel plate of adding, 95 degree condyle plate, external fixer and condyle screws, with compare in the past, be theory or the practice very big breakthrough has all been arranged, also obtained satisfied curative effect.But, still there are some problems not obtain satisfied solution, the especially fracture of complicated type, when nonunion or malunion person need rebuild, the ability of above-mentioned inside-fixture aspect warping resistance, anti-revolving was relatively poor, so need further to improve and invention.

(3) summary of the invention: the purpose of this utility model will design section retrograde intramedullary nail far away in a kind of femur exactly, solves the fracture of complicated type well, nonunion and malunion person's reconstruction problem.Major technique of the present utility model adopts an intramedullary pin of being made up of nail body, nail point and nail tail, the nail body is bending with the junction of nail tail, the nail body is awl garden shape, the nail point is prismatic, and the nail tail is the garden cylindricality, and nail has hole, ellipse garden on one's body, the major diameter in hole, ellipse garden and the axis parallel of following closely body, on the nail tail hole, garden is arranged, ellipse garden centerline hole becomes an angle of cut with the centrage in hole, garden, and the tail end of nail tail has a hole.Major advantage of the present utility model is can be three-dimensional fixing, has increased anti-rotation and warping resistance ability, has reduced the damage of vascellum laterale in the femur, nerve.

(4) description of drawings: Fig. 1 is a front elevational schematic of the present utility model, and Fig. 2 is a schematic side view, and Fig. 3 is the A-A sectional drawing of Fig. 1, and Fig. 4 is the B-B sectional drawing of Fig. 2, and Fig. 5 is that the E of Fig. 4 is to sketch map.

(5) specific embodiment: describe details of the present utility model and working condition in detail in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5.Adopt one nail body (1), nail point (3) to be arranged and follow closely the intramedullary pin that tail (2) is formed, the nail body is bending with the junction of nail tail, follows closely body and is awl garden shape, and the nail point is prismatic, and the nail tail is the garden cylindricality.The nail body is will hammer in the marrow of femur with nail point, and it is outer that the nail tail is exposed at femur, so the nail body is an awl garden shape, the nail point is a prismatic, prevents the rotation of non-magnetic shim and set.Nail has hole, ellipse garden (4) on one's body, the major diameter in hole, ellipse garden and the axis parallel of following closely body.Nail hole, ellipse garden is on one's body mainly used for easy insertion steady pin.On the nail tail hole, garden (6) is arranged, this hole, garden also is used for inserting steady pin and uses.Ellipse garden centerline hole becomes an angle of cut with the garden centerline hole, and this measure also is the rotation of anti-non-magnetic shim and moves.The tail end of nail tail has a hole (5), and this is used for being connected with extraneous.This utility model will be by means of fixed mount, and the steady pin in hole, ellipse garden and the steady pin in hole, garden all will be fixed to marrow and nail on, also to be fixed on the fixed mount simultaneously, sight also is housed on the fixed mount, steady pin is entered in the hole, ellipse garden easily, and do not damage vascellum laterale and nerve in the femur.This utility model major advantage is three-dimensionally to fix and warping resistance, and complicated fracture, nonunion or malunion person are had curative effect preferably.

Claims (1)

1, section retrograde intramedullary nail far away in a kind of femur, it is characterized in that: one has nail body (1), nail point (3) and follows closely the intramedullary pin that tail (2) is formed, the nail body is bending with the junction of nail tail, and the nail body is awl garden shape, and the nail point is prismatic, the nail tail is the garden cylindricality, nail has hole, ellipse garden (4) on one's body, and the major diameter in hole, ellipse garden and the axis parallel of following closely body have hole, garden (6) on the nail tail, ellipse garden centerline hole becomes an angle of cut with the garden centerline hole, and the tail end of nail tail has a hole (5).

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