Surgical staple remover and its use
Technical field
[0001] the present invention belongs to a surgical medical instrument, in particular to a device for taking out a surgical fixed needle.
Background technology
[0002] metal screws are commonly used for orthopedic fixation. In clinical practice, fracture fixation is often broken (sliding) nails. When broken (sliding) nails occur, the operation is forced to stop, and the whole fracture fixation process has to start from scratch. The removal of broken (sliding) nails is a very complicated matter, which takes time and effort. The traditional tool for removing broken nails is circular saw, which has poor nail removal effect, takes a long time, and has great damage to bone. Moreover, the nails need to be removed after the steel plate is completely removed. The original bone hole can not be reused, and the steel plate needs to be relocated, which brings great inconvenience to the whole operation, increases the risk of iatrogenic re fracture, increases the operation time, and causes more bleeding for patients, The rate of postoperative infection increased. Some self-made broken nail extractors have poor flexibility and fail to achieve the purpose of convenience and speed.
Summary of the inventi
[0003] in order to overcome the disadvantage of inconvenient use of the existing broken nail extractor, the present invention provides an orthopaedic broken nail extractor and its use method. The orthopaedic broken nail extractor is not only easy to accurately locate, but also has little damage to the body during the removal process. [0004] the technical solution adopted by the present invention to solve the technical problem is: an orthopaedic broken nail extractor, which is characterized by: it is composed of a drill guide, a drill bit and a screw extractor. One end of the guide rod of the drill guide is a guide handle, and the other end is equipped with a factory shaped guide head. The horizontal section of the guide head is provided with a guide hole for installing a drill bit, and the inclined section of the guide head is provided with an auxiliary positioning pin, The nail extractor is T-shaped, the upper end of the nail extractor rod is equipped with a nail extractor handle perpendicular to it, the lower end is a truncated conical screw extractor thread head, and its thread direction is reverse thread, i.e. left-hand thread.
[0005] the auxiliary positioning pin is welded and fixed on the guide head.
[0006] the auxiliary positioning needle is threadedly connected with the guide head.
[0007] the handle of the nail extractor is in the shape of a sleeve, and the handle rod of the nail extractor is installed in the sleeve.
[0008] the thread head of the truncated conical nail extractor, the front end of the thread head is 0.5-1mm smaller than the diameter of the drill hole, the rear end is 1-2mm larger than the diameter of the drill hole, and the thread length is 15-25mm.
[0009] a method for using an orthopaedic broken nail extractor, which is characterized in that it mainly comprises the following steps:
[0010] A. positioning: align the guide hole of the drill guide with the head of the broken nail, and adjust the guide hole to be in the same direction as the broken nail, [0011] B. drilling: put the drill bit of the electric drill into the guide hole, start the electric drill to drill on the broken nail, and the drilling depth is [0012] C. taking the broken nail: insert the screw head of the screw nail extractor into the drill hole, rotate the screw nail extractor to the left, that is, rotate the screw nail extractor counterclockwise, and thread the back of the broken nail hole, The nail extractor is in close contact with the broken nail. Since the thread of the screw head of the screw nail extractor is a left-hand thread opposite to the broken nail thread, the broken nail can be screwed out of the human body during the left-hand rotation, i.e. counterclockwise rotation.
[0013] the use method of the present invention is to align the guide hole of the drilling guide with the head of the broken nail, adjust the guide hole to be in the same direction as the broken nail, put the drill bit of the electric drill into the guide hole, start the electric drill to drill on the broken nail, and then insert the screw head of the screw nail extractor into the drill hole to turn left (counterclockwise) the screw nail extractor. The back of the broken nail hole is reverse threaded, and the nail extractor is in close contact with the broken nail, Since the thread of the screw head of the screw nail extractor is a left-hand thread opposite to the thread of the broken nail, the broken nail can be screwed out of the human body during the left-hand rotation (counterclockwise rotation). Since the auxiliary fixed needle of the drilling guide is connected with the guide head by thread, its length can be adjusted according to the needs of the surgical site, and the angle of the fixed guide hole can be adjusted more conveniently and accurately to ensure that the drilling direction is consistent with the center line of the broken nail, so as to reduce the damage to the body during the nail removal process and reduce the pain of the patient.
[0014] the beneficial effect of the present invention is that the broken nail can be accurately positioned, drilled and taken out. The instrument can accurately adjust the angle of the fixed guide hole according to the needs of the surgical site to ensure that the drilling direction is consistent with the center line of the broken nail, reduce the damage to the body during the nail taking process and reduce the pain of the patient.
Post time: Aug-29-2022
