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Figure 7. PhysioTel®Digital Device Placed Intraperitoneally
[MES11]
11. Next a small pocket should be tunneled in the subperitioneal space using blunt
dissection with a mayo scissors
or a straight hemostat
to provide a secure location for the
antenna to sit.
12. The body wall can be temporarily apposed near the antenna (without including the
antenna itself) using an interrupted suture or a towel clamp.
13. The body wall should be closed in
2-
3 layers. The first layer is the muscular body wall
itself which should be closed in a simple interrupted pattern with a
n monofilament
absorbable suture of the appropriate size.
14. Next, the subcutaneous tissue should be closed in a simple continuous pattern using an
absorbable material, burying the knots.
15. Finally, skin should be closed in an intradermal/subcuticular pattern using an
absorbable suture material. This pattern is recommended to prevent post-operative
irritation. Tissue glue may be used to seal the incision if the surgeon chooses.
Extraperitoneal Placement: Intramuscular/Subcutaneous
Intramuscular or subcutaneous device placement is appropriate in laboratory animals
where the anatomy allows for a sufficiently sized pocket in the flank
(paralumbar fossa
area)
in which the device and antenna can lie flat and at 90 degrees to one another. The
device and antenna must also lie in a location that does not place either portion of the
device over bone. No implants should be placed directly underneath an incision, as this can
interfere with proper healing, but rather the overlying tissue should be undermined to create
a pocket that lies slightly distant from the incision. The intramuscular placement provides
additional soft tissue between the device body and the skin and has been noted to reduce
the incidence of rubbing or scratching in swine and non-human primates.
Figure 8. PhysioTel®Digital Device in
SQ/IM
Pocket with Antenna at 90 Degrees
Lateral Recumbency
1. Place a straight to curvilinear incision, slightly longer than the device body, in the
paralumbar fossa area, between the tuber ischii and the last rib. A second smaller stab
skin incision should be made at the point to which the antenna is expected to extend (as
determined by estimating approximate device location prior to surgery) at a 90 degree
angle to the device body.
Figure 9. Subcutaneous/Intramuscular Placement in Lateral Recumbency
Figure 10. Abdominal Wall Muscle Layers
