Canine Neuter Model

This canine neuter model was designed with a resin (plastic) base and a silicone skin layer. It has foam testicles enclosed within a balloon and includes a long vasculature pedicle and a simulated serous membrane (visceral and parietal layers). Incisions can be made in either pre-scrotal or scrotal locations. Testicle inserts are inexpensive and easy to mass produce but do take 24 hours to dry before use. They are easily inserted in the base when replacement is needed. The base is indefinitely reusable.

Ancillary scrotal models that allow for repeated testicular blocks are also included in this section, as the foam testicular models loaded into the base are good for only one or two injections. These scrotal models are poured silicone with embedded cotton ball testicles, which simulates negative pressure and allows for injection of fluid into the cotton ball “testicles”.

Second generations are in progress now, and will include a separate subcutaneous layer for closing pre-scrotal incisions, reinforced skin (swimsuit liner) to prevent tearing and allow multiple closures (reuse), and a main “skin” that is adhered to the base and a smaller replaceable section of skin at incision points for easier and less expensive replacement of incised parts. “Live” vasculature is easy to produce by embedding silicone tubing instead of string within the pedicle, where pressure is maintained by a syringe pump, syringe and red colored fluids pumped through the tubing. This provides positive and/or negative feedback regarding ligature security/hemostasis. Future iterations will ideally include ability to pass a urinary catheter, as well.

This model is designed to be prepped, draped, localized anesthesia injected, incised, castrated, and closed, as applicable (complete set of clinical skills for the procedure).