CN201168025Y - Underreamer of thighbone marrow nail caudal end with depth-limited sheathed tube - Google Patents

Abstract

The utility model relates to a femoral lock intramedullary nail tail end reamer with a depth stop bushing, which solves the problem of hardly and precisely controlling the depth in the process of the intramedullary nail tail end reaming in an operation for treating the fracture of femoral shaft. The femoral lock intramedullary nail tail end reamer comprises a reamer, a bushing and a spanner; the length, the inner diameter and the external diameter of the improved bushing are 165mm, 10mm and 12mm respectively, the end of the bushing corresponding to the spanner takes the shape of a flange, and the diameter of the flange end of the bushing is 14mm. The femoral lock intramedullary nail tail end reamer of the utility model improves the existing femoral lock intramedullary nail tail end reamer, is provided with a corresponding depth stop bushing, and can realize the precise determination of the reaming depth of the cylindrical spiral reamer, thus facilitating the surgical operation and ensuring accurate operation.

Description

Has the dark telescopic femur intramedullary nail with lock tail end reamer of limit

Technical field

This utility model relates to orthopaedics therapy femur intramedullary nail with lock tail end reamer.

Background technology

The femur intramedullary nail with lock is to treat the most frequently used operation holding appliance of fracture of shaft of femur clinically, and is widely-used clinically.But existing operating theater instruments master follows closely the afterbody reaming and finishes by arcual rhizoma sparganic reamer, and the hole of being expanded is coarse, and is irregular, and is inconsistent because of every doctor's operating result, causes main nail installation accuracy not high.The inventor once improved intramedullary pin tail end reamer, had designed a column type Flos Cannabis reamer, and its profile and size are close with main nail afterbody, and this hole of boring is column type, improves greatly with the main fitness of following closely; But the degree of depth is difficult for accurately control in this instrumentation process, occurs shallow or dark situation easily.

Summary of the invention

The degree of depth is difficult for the accurately problem of control in the intramedullary pin tail end reaming process in order to solve, and this utility model provides a kind of dark telescopic femur intramedullary nail with lock tail end reamer of limit that has.

Concrete architecture advances scheme is as follows:

Have the dark telescopic femur intramedullary nail with lock tail end reamer of limit, comprise reamer, sleeve pipe and spanner, reamer 1 one ends bore 2 for strand, and the other end is a quadrangular bar 3; Spanner comprises movable swing arm 7 and fixed bar 6, fixed bar 6 is provided with installation opening, movable swing arm 7 is threaded with the installation opening place of fixed bar 6, movable swing arm 7 stretches on the interior inner extending end of installation opening and is connecting V-arrangement compact heap 8, V-arrangement compact heap 8 cooperates with quadrangular bar 3 lateral surface of reamer 1, quadrangular bar 3 ends of reamer 1 are positioned at the installation opening of spanner fixed bar 6, and its improvement is:

Described telescopic length is 165 millimeters, 10 millimeters of casing inner diameters, and 12 millimeters of cover externals diameter of pipe, the corresponding end of sleeve pipe and spanner is the flange plate-like, telescopic ring flange end diameter is 14 millimeters.

This utility model is by the improvement to existing femur intramedullary nail with lock tail end reamer, designed the dark sleeve pipe of matching used with it limit, can realize determining exactly the degree of depth of column type Flos Cannabis reamer hinge brill, make operation technique more convenient, and guarantee that operation is more accurate.

Description of drawings

Fig. 1 is this utility model structural representation,

Fig. 2 is the vertical view of Fig. 1.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

Referring to Fig. 1 and Fig. 2, have the reaming of the dark telescopic femur intramedullary nail with lock tail end of limit and comprise reamer 1, sleeve pipe 4 and spanner, reamer 1 one ends are strand drill bit 2, the other end is a quadrangular bar 3; Spanner comprises movable swing arm 7 and fixed bar 6, fixed bar 6 is provided with installation opening, movable swing arm 7 is threaded with the installation opening place of fixed bar 6, movable swing arm 7 stretches on the interior inner extending end of installation opening and is connecting V-arrangement compact heap 8, V-arrangement compact heap 8 cooperates with quadrangular bar 3 lateral surface of reamer 1, and quadrangular bar 3 ends of reamer 1 are positioned at the installation opening of spanner fixed bar 6;

Described telescopic length is 165 millimeters, 10 millimeters of casing inner diameters, and 12 millimeters of cover externals diameter of pipe, sleeve pipe and spanner corresponding end are provided with and are the flange plate-like, and telescopic ring flange end diameter is 14 millimeters.

During use, sleeve pipe 4 is sleeved on the reamer 1, and telescopic ring flange end correspondence spanner, and strand drill bit 2 stretches out outside the sleeve pipe 4, and sleeve pipe 4 length are approaching with main thick of afterbody of nail.In the operation, after the femoral shaft pulp cavity enlarges, upwards pass from femoral shaft fractured near end end so that guide rod is retrograde from the femoral intertrochanteric recess, reamer is inserted and carries out reaming from the buttocks otch together with the dark sleeve pipe of limit, when the ring flange end of sleeve pipe 4 was obstructed above femoral greater trochanter, it was optimum depth that reamer enters the degree of depth.

Claims (1)

1, have the dark telescopic femur intramedullary nail with lock tail end reamer of limit, comprise reamer, sleeve pipe and spanner, reamer (1) one end bores (2) for strand, and the other end is quadrangular bar (3); Spanner comprises movable swing arm (7) and fixed bar (6), fixed bar (6) is provided with installation opening, movable swing arm (7) is threaded with the installation opening place of fixed bar (6), movable swing arm (7) stretches on the interior inner extending end of installation opening and is connecting V-arrangement compact heap (8), V-arrangement compact heap (8) cooperates with quadrangular bar (3) lateral surface of reamer (1), quadrangular bar (3) end of reamer (1) is positioned at the installation opening of spanner fixed bar (6), it is characterized in that:

Described telescopic length is 165 millimeters, 10 millimeters of casing inner diameters, and 12 millimeters of cover externals diameter of pipe, the corresponding end of sleeve pipe and spanner is the flange plate-like, telescopic ring flange end diameter is 14 millimeters.

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