LeMaitre Omniflow II Instrucciones De Uso página 4

When it is time to implant the prosthesis, remove the clamps from the prosthesis and allow the heparin and saline to drain
out.
CURVED VASCULAR PROSTHESIS
The curved prosthesis is rinsed in the same manner as described above for the straight prosthesis. The curved configuration
is maintained throughout the procedure. Fig. 6. Do NOT straighten the prosthesis.
Implantation
Prepare the incisions in the normal fashion.
Use of a hollow tunnelling instrument
STRAIGHT VASCULAR PROSTHESIS
Form a tunnel for the prosthesis using a metal or plastic hollow tunnelling instrument and pass the prosthesis through the
instrument. Fig. 7.
CURVED VASCULAR PROSTHESIS
Marking the proposed graft layout on the skin with a sterile surgical marker may facilitate final positioning of the prosthesis.
Maintain the curve of the graft by inserting 2 hollow tunnelling instruments and passing both straight sections of the graft
through simultaneously from the distal to the proximal incision. Fig. 8. Ensure that the graft does not kink at the curve
during placement.
Carefully remove the tunnelling instrument when the graft has been correctly placed.
Anastomoses
1. When fashioning the ends for the anastomoses it is essential to cut off those portions of the prosthesis that were clamped
during preparation.
2. Monofilament polypropylene is the preferred suture material. During suturing evert the edges of the prosthesis and ensure
the full wall thickness and a mesh eyelet are taken up with each stitch. Fig. 9.
3. Prior to completion of the second anastomosis flush the prosthesis with blood to ensure complete removal of the heparin.
4. An intra-operative angiogram may be performed at the time of the procedure to document function. Ensure that the artery
rather than the prosthesis is used for the injection.
At the completion of the procedure the patient record labels supplied with the prosthesis should be affixed in the patient and
hospital records.
Arteriovenous Access
1. It is preferable to allow the prosthesis to heal for a minimum of two weeks prior to commencement of puncturing.
2. Do NOT puncture the arteriovenous access repeatedly in the same site as this may lead to disruption of the wall of the
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