CN201194834Y - Extractor for residual nail in bone - Google Patents

Abstract

The utility model relates to an intrabony residual nail extractor which comprises a main body, a force purging window, an attachment screw, a screw cap, a gasket, a front end spiral sawtooth, a push rod, a buffering knot and a tail end rod. The front part of the main body is provided with the built-in push rod, and the front end of the main body is provided with the front end spiral sawtooth. The attachment screw for limiting the sclerotin hole slash depth is arranged at the subcentral position of the push rod, the outer end of the attachment screw is provided with the screw cap, the force purging window is arranged on the main body at the rear end of the push rod, the rear end of the main body is connected and provided with the buffering knot, and the rear end of the buffering knot is provided with the tail end rod. The utility model has simple whole structure, stable and quick operation, and small wound on osseous tissue. When in operation, the force bearing point of the bone only concentrates at the circumference of an intrabony broken nail without causing the broken nail to move and transmitting the dispersive force. Due to the adoption of the utility model, the complicating disease and the sequel of new bone tissue damage, delayed bone healing, malunion, and the like caused by the intrabony residual broken nail and the adoption of the traditional residual nail extracting way are avoided, and the operation process is simplified.

Description

Residual nail extractor in the bone

Technical field:

This utility model relates to orthopedic instrument, relates in particular to residual nail extractor in the bone.

Background technology:

Orthopaedics broken end nail and end nail are common phenomena clinically, because of the broken nail that remains in the bone combines with osseous tissue closely, in order to take out compact bone deep residual broken end nail and broken nail, need by complicated operation form, but still might cause the poly-injury of crossing of broken nail surrounding bone tissue, even the fissibility fracture of broken nail periphery may take place.In the operative process, be stabilized in broken end nail or broken nail in the osseous tissue, axial displacement very easily takes place, misoperation easily causes myeloid tissue to destroy complication such as liquefaction of fat.Operating field exposed of a specified duration, and easily accompanying infection forms osteomyelitis.

The utility model content:

The purpose of this utility model is, overcomes the deficiencies in the prior art part, and residual nail extractor in a kind of bone is provided, and can take out residual nail quickly and easily, reduces patient's misery, has also reduced medical personnel's labor intensity.

Residual nail extractor in the bone described in the utility model, including main body, force unloading window, set screw, nut, pad, front end spiral sawtooth, push rod, buffering knot and tail end bar forms, said main body is the central body part of residual nail extractor in the bone described in the utility model, round bar shape, the front portion of main body is provided with built-in push rod, and the front end of push rod also is the front end in main body, be provided with front end spiral sawtooth, said front end spiral sawtooth is the cutlery that is used to cut the sclerotin reaming.In the middle substantially position of push rod, be provided with the set screw that the restriction sclerotin reaming degree of depth is used, the outer end of set screw is a nut, between nut and body surfaces, is provided with pad.On the main body of putting back-end, be provided with force unloading window, the rear end of main body is connected with the buffering knot, and the rear end of buffering knot is provided with the tail end bar.Said force unloading window, it is the stringer grooved window that 20 millimeters are located to be provided with more than body front end, side in said force unloading window is provided with the graduation mark that each is spaced apart 1 millimeter, pierces the spacing scale of the degree of depth of sclerotin as residual nail extractor in the qualification bone of the present utility model.

Residual nail extractor in the bone described in the utility model, overall structure is simple, and stable operation and quick is little to the osseous tissue wound.In the operation, the hard point of bone only concentrate on residual broken nail around, can not cause that broken nail moves, dispersibility power conduction can not take place.Use residual nail extractor in the bone described in the utility model, can avoid residual and use traditional residual nail to take out complication and sequela such as new osseous tissue damage that mode caused, knitting delay, malunion, simplify the process of performing the operation because of broken nail in the bone.

Description of drawings:

Accompanying drawing is the structural representation of residual nail extractor in the bone described in the utility model.1-main body, 2-force unloading window, 3-set screw, 4-nut, 5-pad, 6-front end spiral sawtooth, 7-push rod 8-buffering knot 9-tail end bar

The specific embodiment:

Referring now to accompanying drawing 1, be described as follows in conjunction with the embodiments: residual nail extractor in the bone described in the utility model, including main body 1, force unloading window 2, set screw 3, nut 4, pad 5, front end spiral sawtooth 6, push rod 7, buffering knot 8 and tail end bar 9 forms, said main body 1 is the central body part of residual nail extractor in the bone described in the utility model, round bar shape, the front portion of main body 1 is provided with built-in push rod 7, the front end of push rod 7, it also is front end in main body 1, be provided with front end spiral sawtooth 6, said front end spiral sawtooth 6 is the cutleries that are used to cut the sclerotin reaming.In the middle substantially position of push rod 7, be provided with the set screw 3 that the restriction sclerotin reaming degree of depth is used, the outer end of set screw 3 is nuts 4, between nut 4 and main body 1 surface, is provided with pad 5.On the main body 1 of push rod 7 rear ends, be provided with force unloading window 2, the rear end of main body 1 is connected with buffering knot 8, and the rear end of buffering knot 8 is provided with tail end bar 9.Said force unloading window 2, be 20 millimeters stringer grooved windows of locating to be provided with more than main body 1 front end, side in said force unloading window 2 is provided with the graduation mark that each is spaced apart 1 millimeter, pierces the spacing scale of the degree of depth of sclerotin as residual nail extractor in the qualification bone of the present utility model.Residual nail extractor in the bone described in the utility model, overall structure is simple, and stable operation and quick is little to the osseous tissue wound.In the operation, the hard point of bone only concentrate on residual broken nail around, can not cause that broken nail moves, dispersibility power conduction can not take place.Use residual nail extractor in the bone described in the utility model, can avoid residual and use traditional residual nail to take out complication and sequela such as new osseous tissue damage that mode caused, knitting delay, malunion, simplify the process of performing the operation because of broken nail in the bone.

Claims (1)

1. residual nail extractor in the bone, the front portion that it is characterized in that main body (1) is provided with built-in push rod (7), the front end of push rod (7), also be front end, be provided with front end spiral sawtooth (6), in the middle substantially position of push rod (7) in main body (1), be provided with the set screw (3) that the restriction sclerotin reaming degree of depth is used, the outer end of set screw (3) is nut (4), between nut (4) and main body (1) surface, is provided with pad (5); On the main body (1) of push rod (7) rear end, be provided with force unloading window (2), the rear end of main body (1) is connected with buffering knot (8), and the rear end of buffering knot (8) is provided with tail end bar (9).

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