Implantation of One Piece Biventricular Assist Device by Left Thoracotomy in an Ovine Model
Autor: | Yong Ho Jo, Won Gon Kim, Byoung Goo Min, Tae Hee Won |
---|---|
Rok vydání: | 2000 |
Předmět: |
Cardiac Catheterization
medicine.medical_specialty medicine.medical_treatment Biventricular assist device Atrial Pressure Biomedical Engineering Medicine (miscellaneous) Biocompatible Materials Blood Pressure Bioengineering Pulmonary Artery Biomaterials Heart Rate Internal medicine medicine.artery medicine Animals Humans Heart Atria Thoracotomy Cardiac Output Aorta Sheep business.industry Mean Aortic Pressure Stroke Volume Equipment Design General Medicine Atrial Function Cannula Surgery Survival Rate Disease Models Animal Corriedale sheep Pulmonary artery Cardiology Heart-Assist Devices Peritoneum business Right Atrial Appendage |
Zdroj: | Artificial Organs. 24:760-763 |
ISSN: | 1525-1594 0160-564X |
Popis: | In this report, we describe an operative procedure for our implantable 1 piece biventricular assist device (BiVAD) based on a moving actuator mechanism, using an ovine model. Our implantable BiVAD is a volumetric coupled 1 piece unit including right and left blood sacs and an actuator assembly based on the moving actuator mechanism. The BiVAD was controlled by fixed rate control with 75 bpm for the most part. Both the left and the right full ejection modes with the maximum stroke angle were selected to minimize blood stasis in the blood sacs because of low assist flow condition. Three Corriedale sheep were used for the device implantation by a left thoracotomy incision. Cannulation was successfully performed in all cases. Although exposability of the right atrial appendage varied from animal to animal, the insertion of the cannula was easily performed. The cannulas were connected to the pump-actuator assembly in the preperitoneal pocket. All 3 animals survived the experimental procedure. During implantation of the device, in the 1 month survival animal, pump flow was maintained between 2.0 L/min and 2.5 L/min, mean aortic pressure was 90–110 mm Hg, and mean pulmonary artery pressure was 20–30 mm Hg. The left and right atrial pressure were maintained between 0 and 5 mm Hg. In conclusion, this ovine model for implantation of the 1 piece BiVAD can be an effective alternative for testing in vivo biocompatibility of the device although it needs more consideration for anatomical fittability for future human application. |
Databáze: | OpenAIRE |
Externí odkaz: |