SU1489749A1 - Fixative for intramedular osteosynthesis - Google Patents

Description

The invention relates to traumatology and orthopedics, and is intended to reduce the time of its installation while reducing operating trauma. The latch is made in the form of a rod 1 with pointed ends 2,3 and ears 4,5. The pointed ends 2,3 are made with cutting edges 6,7, and a channel is made along the rod 1. The advantage of the fixative is that it is also a tool for treating the medullary canal to the fixator of bone fragments. 2 Il.

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The invention relates to medical technology, I specifically to traumatology and orthopedics. ^one

The aim of the invention is to reduce installation time while reducing operating trauma.

FIG. 1 shows a fixator for intramedullary osteosynthesis; in fig. 2 is a view A of FIG. one.

The latch is made in the form of a rod 1 with pointed ends 2 and 3 and ears 4 and 5. Ends 2 and 3 are made with cutting edges 6 and 7, respectively, and along channel 1, channel 8 is made

The latch is used as follows.

Under general anesthesia, observing the rules of asepsis and antisepsis, produce prompt access to the fracture site of the tubular bone diaphysis. The ends of the peripheral and central fragments of the bone are freed from soft tissue and taken on handles (not shown). According to the diameter of the widest area of the bone-brain canal of the peripheral fragment, the rod 1 is picked up. One end 2 of the rod 1 is inserted into the collet chuck of the bone-treating apparatus (not shown) and fixed in it. Turn on the device. The second free end 3 of the rod 1c is inserted with cutting edges 7 into the bone marrow canal of the central fragment and drilled until its end 3 leaves the cortical layer of the metaepiphyseal part of the bone in soft tissue. The soft tissues are dissected in this place, the rod 1 is advanced to the wound, then the collet is disconnected and connected to the other end of the 3 rod 1. Rotate it to achieve full immersion of the opposite end 2 into the bone marrow canal of the central fragment. They match the ends of the bone fragments and hold them to the bone holder in a repositioned position. Rotating the rod 1, advances it into the bone marrow canal of the distal fragment to the desired depth, drilling out narrow sections of this canal, disconnecting the collet chuck from the rod 1. Correctly reposition and insert the rod 1 into the bone marrow canal, check radiographically, after which the wounds are stitched

and aseptically bandaged. A plaster bandage is applied to the limb.

Example. Patient K., 27 years old, was admitted to the clinic with a diagnosis of a closed transverse fracture of the middle third of the right femur with displacement of fragments in length and width. Intramedular osteosynthesis is performed. A 15 cm incision provides access to the fracture site. ' At the same time find interposition of soft tissues between fragments. The ends of the bone fragments after their release from the surrounding tissue are taken on the handles. The diameter of the lumen of the bone-cerebral canal of the peripheral fragment pick up the rod 1 with a diameter of 7 mm and a length of 380 mm. Ream the bone marrow canal of the central fragment to the exit of the end 3 of the rod 1 from under the skin above the greater skewer. The skin and soft tissues in this place are dissected and the end 3 of the rod 1 is brought out. The collet chuck is disconnected from the rod 1, and connected to the other end 3, and its end is pushed outward until the opposite end 2 is flush with the end of the central fragment of the femur. The ends of the bone fragments are repositioned and held in this position by the boneholder. The rotation of the rod 1 promotes it in the bone-marrow channel of the peripheral fragment to the desired depth. On the control radiograph, the adaptation of the ends of the bone fragments is good. The wounds are sutured in layers tightly, leaving a drainage tube in the area of bone fracture. The drain tube is removed the next day. The stitches are removed in time. The patient is discharged for outpatient treatment with a recommendation for a gradual functional load of the limb. After 3.5 months after the operation, complete adhesion of the femur bone fragments in the area of its damage is noted.

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When using a fixator for intramedular osteosynthesis of fragments of long tubular bones, the stability of fixation of bone fragments is increased by increasing the length of the channel channel corresponding to the diameter of the rod, and the invasiveness of the operation is reduced by eliminating the core jamming and spreading ·

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rasprokkola bones in the most

places of the medullary canal,

destruction of the meta-epiphyseal part

maximal bone.

Claims (1)

Claim device For intramedullary osteosynthesis, made in the form a rod with pointed ends and ears, characterized in that, in order to reduce installation time while reducing operating trauma, the pointed ends are made with cutting edges, and a channel is made along the rod. Type A FIG. 2