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CN-224220210-U - Device for fixing fracture bone fragments between trochanters of femur

CN224220210UCN 224220210 UCN224220210 UCN 224220210UCN-224220210-U

Abstract

The utility model discloses a device for fixing fracture bone fragments between femoral trochanters, which comprises a nail rod, a nail cap and an O-shaped tension band, wherein a sliding groove is formed in the middle position of the nail rod in a penetrating manner, the inner wall of the sliding groove is connected with a sliding rod in a sliding manner, a plurality of mounting grooves are symmetrically and equidistantly formed in the outer wall of the nail rod in a penetrating manner, the mounting grooves extend into the sliding groove and are all rotationally connected with auxiliary nails, connecting grooves are formed in the outer wall of the nail rod in a penetrating manner relative to the positions of the auxiliary nails, push blocks are fixedly connected with the outer wall of one side of each auxiliary nail, the push blocks extend into the connecting grooves, one end of the sliding rod extends out of the sliding groove and is fixedly connected with the nail cap, the O-shaped tension band is sleeved on the outer wall of each limiting block, so that the auxiliary nails are abutted against the bone walls of a patient, friction of the sliding rod is increased, the limiting block limits the nail cap, the O-shaped tension band is sleeved on the outer side of the limiting block, the nail rod is limited by the O-shaped tension band, and the fracture bone fragments of the patient are secondarily reinforced.

Inventors

  • SUN SHIHUA
  • ZHANG LINLIN
  • LIU HAORAN

Assignees

  • 兰州市第二人民医院

Dates

Publication Date
20260512
Application Date
20241231

Claims (5)

  1. 1. The device for fixing the fracture bone fragments between the trochanters of femur comprises a nail rod (1), a nail cap (2) and an O-shaped tension belt (6), and is characterized in that a sliding groove is formed in the middle of the nail rod (1) in a penetrating mode, a sliding rod (3) is connected to the inner wall of the sliding groove in a sliding mode, a plurality of mounting grooves are formed in the outer wall of the nail rod (1) in a symmetrical mode in an equidistant penetrating mode, and the mounting grooves extend into the sliding groove and are connected with auxiliary nails (4) in a rotating mode; The outer wall of nail pole (1) has all run through for the position of supplementary nail (4) and has seted up the spread groove, the equal fixedly connected with ejector pad (5) of one side outer wall of supplementary nail (4), ejector pad (5) extend to the spread groove in, the one end of slide bar (3) extends to outside the spout and fixedly connected with nail cap (2), the outer wall of nail pole (1) is encircling form fixedly connected with stopper (7), O shape pulling force area (6) have been cup jointed to the outer wall of stopper (7).
  2. 2. The device for fixing fracture bone fragments among femoral trochanters according to claim 1, wherein a blocking groove is formed in one end, away from the nail cap (2), of the sliding groove, a blocking block (8) is connected to the inner wall of the blocking groove in a sliding mode, and the blocking block (8) is fixedly connected with the sliding rod (3).
  3. 3. A device for fixing fragments of fracture bone between trochanters of femur according to claim 1, characterized in that the outer wall of the end of the shank (1) remote from the nut (2) is provided with threads.
  4. 4. Device for fixing fragments of fracture bone between trochanters of femur according to claim 1, characterized in that the auxiliary nail (4) is arranged in L-shape with the push block (5).
  5. 5. A device for fixing fragments of fracture bone between trochanters of femur according to claim 1, characterized in that the stopper (7) is arranged in T-shape and abuts against the nut (2).

Description

Device for fixing fracture bone fragments between trochanters of femur Technical Field The utility model relates to the technical field of medical appliances, in particular to a device for fixing fracture bone fragments between trochanters of femur. Background The subtrochanter fracture refers to fracture occurring below the greater trochanter and lesser trochanter of femur, is a common fracture type, especially for the elderly with osteoporosis, and belongs to unstable fracture, and surgical treatment is usually required in combination with rehabilitation training. If the bone fragments are bigger, it is suggested to make an incision for internal fixation, the fragments are restored to the original position, the bigger fracture fragments can be gradually healed after about one month, and form a whole with other fracture fragments, and gradually restore the shape, but when the bone nail is used, the bone nail is not well connected with the bone fragments of the patient due to the bigger grade of the patient and the bone crossovers, therefore, the device for fixing the fracture bone fragments between the femoral trochanter is necessary to be provided Disclosure of utility model The present utility model aims to provide a device for fixing fracture bone fragments between trochanters of femur, which solves the above-mentioned problems of the prior art. The device for fixing the fracture bone fragments between the femoral trochanters comprises a nail rod, a nail cap and an O-shaped tension belt, wherein a sliding groove is formed in the middle of the nail rod in a penetrating mode, a sliding rod is connected to the inner wall of the sliding groove in a sliding mode, a plurality of mounting grooves are symmetrically and equidistantly formed in the outer wall of the nail rod in a penetrating mode, and the mounting grooves extend into the sliding groove and are connected with auxiliary nails in a rotating mode; The outer wall of nail pole has all run through for the position of supplementary nail and has seted up the spread groove, the equal fixedly connected with ejector pad of one side outer wall of supplementary nail, the ejector pad extends to the spread groove in, the one end of slide bar extends to outside the spout and fixedly connected with nail cap, the outer wall of nail pole is encircleing form fixedly connected with stopper, O shape pulling force area has been cup jointed to the outer wall of stopper. Preferably, a blocking groove is formed in one end, far away from the nut, of the sliding groove, a blocking block is connected to the inner wall of the blocking groove in a sliding mode, and the blocking block is fixedly connected with the sliding rod. Preferably, the outer wall of one end of the nail rod far away from the nail cap is provided with threads. Preferably, the auxiliary nails and the pushing blocks are arranged in an L shape. Preferably, the limiting block is arranged in a T shape and abuts against the nut. Compared with the prior art, the utility model has the beneficial effects that the nail rod is inserted into the fracture bone fragments of the femoral trochanter of a patient, the fracture bone fragments of the patient are primarily fixed by the nail rod, the nail cap and the slide rod are pushed to move inwards, the slide rod pushes the push block and the auxiliary nail to rotate outwards, the auxiliary nail is propped against the bone wall of the patient, the friction of the slide rod is increased, the nail cap is limited by the limiting block, the O-shaped tension band is sleeved outside the limiting block, the nail rod is limited by the O-shaped tension band, and the fracture bone fragments of the patient are secondarily reinforced. Drawings FIG. 1 is a schematic elevational view of the present utility model; FIG. 2 is a schematic cross-sectional view of the shank of the present utility model; FIG. 3 is a schematic elevational view of the shank according to the present utility model; FIG. 4 is a schematic elevational view of a slide bar according to the present utility model; FIG. 5 is a schematic elevational view of the staple of the present utility model; fig. 6 is a schematic diagram of an O-shaped tension band of the present utility model in elevation. In the figure, 1, a nail rod, 2, a nail cap, 3, a slide bar, 4, an auxiliary nail, 5, a push block, 6, an O-shaped tension belt, 7, a limiting block, 8 and a blocking block. Detailed Description Referring to fig. 1-6, the utility model provides a technical scheme that a device for fixing fracture bone fragments between femoral rotors comprises a nail rod 1, a nail cap 2 and an O-shaped tension belt 6, wherein a sliding groove is formed in the middle of the nail rod 1 in a penetrating manner, a sliding rod 3 is connected to the inner wall of the sliding groove in a sliding manner, a plurality of mounting grooves are symmetrically and equidistantly formed in the outer wall of the nail rod 1 in a penetrating manner, and the mounting g