Conductor of tightening strips and wire

FIELD: veterinary science.

SUBSTANCE: conductor comprises handle and working member with the groove. The working member is mounted at an angle to the handle. The working member has lid and grove that receives the tightening strip with chute for wire. The chute is provided throughout the length of the groove. The lid is mounted in the slides and has working face made of a rounded arrester with through opening for clamping tools.

EFFECT: enhanced reliability.

6 dwg, 1 tbl

 

The invention relates to veterinary surgery, namely, instruments for operations on the damaged bones of the limbs of animals. The most effective use of the guide for the osteosynthesis of long bones with oblique and spiral fractures for circular installation tightening strips and wire.

A device for holding a wire saws that contains a handle, a curved tube with a working end, a retainer in the form of a pin mounted in the cavity of the tube and oriented to the working end, and the tube contains a groove with a cover in the form of a plate mounted therein for movement opposite the lock, and the handle is made in the form of a loop in one piece with the tube and located in the same plane as the groove and the outside of the end cap is made in the form of emphasis. The device saw work end is inserted over the bone and excreted in the wound. Pressing on the stop, the cover move and capture loop saws hook handle. The Explorer is displayed. At the end of the saw is put on the second handle, and the chest is dissected. [USSR author's certificate No. 1572562, class. And 61 In 17/14, 23.06.90, BI No. 23].

Also known Explorer surgical saws, containing the handle located at an angle to the working part with a groove and a sharp edge. The conductor is fed through a small incision through the entire thickness of the soft is Kana to the bone and translational motion along the perimeter of the bone with a sharp edge to separate the soft tissue in the form of a narrow cavity. In the groove is inserted a flexible surgical saw, and is perepilivanija bone reciprocating saws, the cloth which passes freely through the slot. [USSR author's certificate No. 1232231, class. And 61 In 17/14, 23.05.86, - prototype].

Installation of the above conductors tightening strips and wire on the arm bones to strengthen them entails extensive injury of the soft tissues and periosteum during surgery. In addition, these guides do not preclude slippage of the wire with a compression strip, and do not guarantee their installation perpendicular to the long axis of the bone, as a consequence, the tightening strips, reinforced with wire, often do not perform the locking function. This leads to the divergence of bone fragments, their mobility, and the lengthening of the period of osteoreparative, the formation of hypertrophic bony calluses, poor bone healing or formation of pseudoarthrosis.

The objective of the proposed solution is to eliminate these drawbacks, reducing the time for the operation, simplification of installation tightening strips and strengthening their wire with a stable fixation of bone fragments.

This object is achieved due to the fact that h is known about the conductor, contains the handle and placed it under the corner of the working part with a groove, according to the invention, the working part has a groove for wire made in the center of the groove and along its length, in addition, the working portion is provided with a detachable cover, held in place with two runners on the working side and the corresponding two slots in the cover, and the working face of the cover is made in the form of a rounded stopper with a through hole.

The present invention is illustrated in the drawings, in which:

figure 1 - proposed guide (General view);

figure 2 - section A-a in figure 1;

figure 3 - the guide before filling wire and tightening band:

figure 4 - cover and the working part in the socket before filling the wire and tightening the band;

figure 5 - proposed guide in working position;

6 - section b-b In figure 5.

The guide contains the handle 1 and located it under the corner of the working part 2 with groove 3, the center of which throughout its length is made trough 4. The groove 4 is made with the possibility of placing him in wire 5, the top of which is provided by the premises of the tightening strip 6 by the party which made the chute 7 to the wire 5. The working part 2 is provided with a removable cover 8, held in place with two runners 9 working on part 2 and corresponding to the two grooves 10 in the cover 8. The working face of the cover is designed as a rounded stopper 11 with a through hole 12.

The device operates as follows. The oblique fracture of the bone is performed under General anesthesia surgical reposition with subsequent fixation of the bone fragments intramedullary fixator. To prevent divergence of fragments in width provides additional circular plate fixation on the perimeter of the diaphysis of the bone by cerclage - in particular, the fixing wire 5 two circular tightening strips 6. One of them lay closer to the proximal portion of the line of fracture and the other to the distal.

Refills Explorer cerclage material slide the cover 8 upwards and in the direction opposite to the handle 1, fixing the cover 8 through the hole 12 teeth or surgical hemostatic forceps, to complete the removal of the working part 2. Then stack the wire 5 along the entire length of the trough 4, which put the garter strip 6 so that its groove 7 and the groove 4 formed a channel for the wire 5. Then on the rails 9 of the working part 2 of the conductor side of the working end of the guide cover 8 slots 10 side opposite to the stopper 11, and push it until it stops, closing thus the groove 3 with the wire 5 and the tightening strip 6.

The conductor with cerclage material through the operating wound down to the bone, prepared on top of the soft tissues, and postupatel the major movement on the perimeter of the bones of the work end of the stopper 11 is separated soft tissue in the form of a narrow cavity. The opposite side of the limiter 11 prevents the promotion of the cover 8 in the direction of the handle 1 and, accordingly, the disclosure cerclage material with its offset relative to the location of the overlay on the fragments and relative to each other, in particular prevents the output wire 5 from the groove 7 of the strip 6. After removing the working end of the conductor on the other side of the bone cover 8 capture hole 12 teeth or surgical hemostatic forceps, and upwards and in the direction opposite to the handle 1, slide the cover 8 to complete its removal. After tightening the strip 6 and the wire 5 is available for circular fixation of bone fragments. At the same time to prevent premature tightening strip 6 of the groove 3 and the wire 5 from the groove 4, the working portion 2 is pressed tightly against the bone. Then circularly fix the bone fragments tightening strip 6, which is fixed by the wire 5, and the rotational movement of the handle 1 in the opposite direction from the working end (in the direction opposite to) the conductor is removed from under the bone and then out of the wound. Then you can build guide - installing the cover 8.

The wound sanitize and close according to the standard technique. Complications during surgery and in the postoperative period were observed.

In the example the value of the proposed Explorer installed:

- preventing soft tissue injuries cerclage material during installation;

- simplification of the technique of circular overlay garter strip and fixing her wire;

- prevention wire from the gutter garter stripes;

- compliance with overlay garter strip and wire perpendicular to the long axis of the bone, which prevents the divergence of fragments of bone width;

- reducing the likelihood of postoperative complications.

- reducing the complexity of a circular fixation of bone fragments;

- improving the efficiency of operations (see table).

Table.
ExplorerThe number of operated animalsThe case of displacement of the wire relative to the bandComplications after surgery
Offer14--
Known1456

As the table shows, the application of the proposed Explorer is more effective when circular overlay garter strip and wire in comparison with the known and eliminates postoperative complications.

The proposed conductor was successfully applied in the osteosynthesis Tr is bcatid bones with oblique and spiral fractures in 14 dogs and cats on the basis of the diagnostic and treatment veterinary center eagle RAY.

Conductor tightening strips and wire containing the handle and the working part with a groove located at an angle to the handle, characterized in that the groove is made under tightening strip having a trough under the wire, with the working part has a groove for the wire is made along the length and through the center of the groove, and features a removable lid held in place with two runners on the working side and two corresponding runners grooves in the lid, and the lid has a working end in the form of a rounded stopper with a through hole for engagement by the teeth or surgical hemostatic forceps.



 

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