CN2540163Y

CN2540163Y - Internal fixator for fracture of neck of femur

Info

Publication number: CN2540163Y
Application number: CN 02214827
Authority: CN
Inventors: 侯孝廉; 孙德修; 汤学珍; 赵梅君
Original assignee: 侯孝廉
Priority date: 2002-05-20
Filing date: 2002-05-20
Publication date: 2003-03-19
Anticipated expiration: 2012-05-20

Abstract

The utility model discloses an internal fixator for fracture of neck of femur, which is characterized in that the utility model relates to a hollow screw tap (1). The screw tap (1) is provided with two side openings at least in the front end thereof. An anchor rod (2) with two furcal sides at least is arranged in the hollow hole and side openings. A lug boss (3) is arranged at the position close to the rear screw tap. The utility model has the advantage of pressure increasing and rotation prevention which improves the fixity and reliability of the fixator, increases recovery of patients suffering fracture of neck of femur. In theory, the utility model has the better performance than that widely used currently.

Description

A kind of fracture of femoral neck inner fixing device

Technical field this utility model belongs to medical apparatus and instruments, especially for a kind of fracture of femoral neck inner fixing device of orthopedics department recovery.

Background technology is at present in same category of device, No. 95235051.3, the utility model patent that the design people once applied for to Patent Office of the People's Republic of China, a kind of fracture of femoral neck reseting fixture, though reasonable clinical manifestation is arranged, but because a variety of causes result of use in the middle of a part of the wounded is undesirable, for better service in vast patient, improve fracture of femoral neck patient's therapeutic effect, the design people has proposed new design at this point, a kind of fracture of femoral neck inner fixing device.

This kind of summary of the invention fracture of femoral neck inner fixing device, be characterised in that a screw tap [1] with hollow, front end at this screw tap [1] has two STHs at least, one of the assembling anchor pole [2] that two ends can jag at least in Kong hole and the STH has a boss [3] at the afterbody near screw tap therein.Its advantage is that the two ends of anchor pole will implement effective positioning and fixing between screw tap front end and femoral head and screw tap end and the femur respectively, therefore, this installs existing pressurization the effect of rotating of preventing again, improved the fixedly reliability of fixture, increase fracture of femoral neck patient's healing effect, be better than the fracture of femoral neck inner fixing device that generally adopts at present theoretically.

Appended drawings 1 is a front view of the present utility model, and Fig. 2 is the A-A profile of accompanying drawing 1, the sweep of the anchor pole that do not draw among Fig. 2, and shown in Fig. 1 is exactly that this device is in the postoperative practical set structure of fracture of femoral neck.Sequence number in the accompanying drawing: 1, screw tap, 2, anchor pole, 3, the dome platform.

The specific embodiment is with reference to accompanying drawing, this fracture of femoral neck inner fixing device, be characterised in that it is a screw tap [1] with hollow, at the front end of this screw tap [1] at least by two STHs, one of the assembling anchor pole [2] that two ends can jag at least in Kong hole and the STH has a boss [3] at the afterbody near screw tap therein.This boss can be circular, four or hexgonal structure, spanner easy to use is tightened.The material of this device preferably adopts titanium alloy, according to different patients, designs different models.

The use summary is: the neck of femur that at first will need to perform the operation positions, sets upright, as be driven into fracture site one or several draw points (nail), use cylindrical drill (hollow boring bit) femur and neck of femur together to be bored into the degree of depth of requirement then, the endoporus of anchor pole and screw tap is worked good, afterwards, by the opening of screw tap end, screw tap is screwed in the femoral head along the hole of just boring, make the forward position of dome platform touch femur, reinforcing is tightened, and promptly plays the effect of pressurization.At this moment, impact anchor pole or exert pressure, the jag of anchor pole front end is got through STH along the mesopore of screw tap, entered into femoral head, then, terminal bending with anchor pole, be driven on the femoral shaft outside screw tap [1] the afterbody dome platform [3] through the opening of screw tap end, like this, except the pressurization of front end screw tap spiral, also increased and prevented the function of rotating, guaranteed that the neck of femur broken ends of fractured bone is anything but as for rotation.

Claims

1, a kind of fracture of femoral neck inner fixing device, be characterised in that it is a screw tap [1] with hollow, front end at this screw tap [1] has two STHs at least, one of the assembling anchor pole [2] that two ends can jag at least in Kong hole and the STH has a boss [3] at the afterbody near screw tap therein.