Implantation Technique for the HeartSaver Left Ventricular Assist Device  Paul J. Hendry, Roy G. Masters, Kevin Day, Bijan Jahangiri, Tofy Mussivand, Wilbert.

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Implantation Technique for the HeartSaver Left Ventricular Assist Device  Paul J. Hendry, Roy G. Masters, Kevin Day, Bijan Jahangiri, Tofy Mussivand, Wilbert J. Keon  Operative Techniques in Thoracic and Cardiovascular Surgery  Volume 7, Issue 3, Pages 152-157 (August 2002) DOI: 10.1053/otct.2002.35120 Copyright © 2002 Elsevier Inc. Terms and Conditions

FIG I HeartSaver VAD system components including (left to right) (1) Transcutaneous Energy and Signal System, (2) blood pump consisting of a volume displacement chamber, blood sac, motor, and silicone hydraulic fluid, and (3) lithium ion internal battery. Operative Techniques in Thoracic and Cardiovascular Surgery 2002 7, 152-157DOI: (10.1053/otct.2002.35120) Copyright © 2002 Elsevier Inc. Terms and Conditions

1A Axillary location of TESS. 1B Pectoral location of TESS. The TESS pocket is made first. A 9 cm horizontal incision is made in the axilla, pectoral or lower chest region and carried down through subcutaneous tissue to pre-muscular fascia. A subcutaneous pocket of appropriate size (8.75 × 14.5 cm) to accommodate the TESS is made using provided sterile models as guides. Operative Techniques in Thoracic and Cardiovascular Surgery 2002 7, 152-157DOI: (10.1053/otct.2002.35120) Copyright © 2002 Elsevier Inc. Terms and Conditions

2 Internal battery with connector may be positioned either horizontally or vertically in a supra- or sub-rectus sheath position. A median sternotomy skin incision is made and carried down to midway between the xiphisternum and umbilicus. A preperitoneal pocket is made by incising the anterior rectus sheath just lateral to the linea alba and lifting the rectus sheath anteriorly. A plane above the posterior rectus sheath is made to accommodate the internal battery model in either a horizontal or longitudinal orientation, depending on preoperative measurements. Operative Techniques in Thoracic and Cardiovascular Surgery 2002 7, 152-157DOI: (10.1053/otct.2002.35120) Copyright © 2002 Elsevier Inc. Terms and Conditions

3 Intrathoracic placement of HeartSaver VAD in the left pleural space with inflow and outflow cannulae connected to left ventricle and aorta, respectively. The sternum is divided, and the pericardium is opened as far right as possible to create a pericardial flap that can be used to cover the outflow cannula at the end of the procedure. The left pleural cavity is opened to allow positioning of the VAD model. If needed, a plane between the left anterior chest and diaphragm can be created to allow for the inferior displacement of the VAD. An appropriate inflow and outflow cannula are selected to optimize VAD placement to prevent excessive rightward displacement of the heart. Once the VAD position is determined, the TESS and internal battery are implanted with their cables and connectors brought through to the location of the VAD using subcutaneous tunnelers provided with the implant kit. This is done before heparinization of the patient. The cannulae are implanted with the patient anticoagulated with heparin and placed on cardiopulmonary bypass to facilitate this part of the procedure. A sidebiting clamp is placed on the left side of the ascending aorta and an aortotomy is made. The outflow graft is cut to an appropriate length and anastomosed to the aorta. The heart is supported out of the pericardium with sponges, and a site for left ventricular cannulation is determined based on VAD model positioning. Approximately 10 interrupted pledgeted sutures of 1 or 2 braided material are placed around the apex of the left ventricle or just adjacent to it. A ventriculotomy is made with a punch or scalpel and the cored apex is sent for histologic examination. The left ventricle is inspected internally to ensure the absence of thrombus or potential obstruction to inflow. The cannula is placed into the ventricle, and sutures are brought through the sewing ring and tied. The HeartSaver VAD is placed into the chest in its predetermined position, and the cannulae are attached to the appropriate ports after filling the blood sac with heparinized saline or albumin. The gland nuts are left loose to facilitate de-airing. A catheter is placed into the outflow graft, and suction is applied with the outflow graft occluded distally. Operative Techniques in Thoracic and Cardiovascular Surgery 2002 7, 152-157DOI: (10.1053/otct.2002.35120) Copyright © 2002 Elsevier Inc. Terms and Conditions

4 Final configuration with HeartSaver VAD in left chest connected to TESS and internal battery. The TESS and internal battery are connected to the HeartSaver VAD. The connectors are aligned and screwed together with tools provided in the implant kit. The clinical engineer/perfusionist performs a check of the appropriate powering and communications with the device to ensure proper connection and alignment between components (TESS and battery). The VAD is actuated with single beats and de-aired with some movement of the VAD to displace air. Once de-airing is complete, the VAD is turned on to pump at a fixed rate of 60 bpm and the patient is slowly weaned off cardiopulmonary bypass with the outflow graft on continuous venting and suction to remove any residual air. When stable, the VAD can be turned on full-fill/full-eject mode. Operative Techniques in Thoracic and Cardiovascular Surgery 2002 7, 152-157DOI: (10.1053/otct.2002.35120) Copyright © 2002 Elsevier Inc. Terms and Conditions

5 Patient after chest closure with TESS primary coil in place and 3 chest tubes draining left chest and pericardial space. The chest, abdominal, and TESS pocket incisions are all closed with standard techniques used in the institution. The primary coil of the TESS is placed and secured with a harness over the secondary coil. Operative Techniques in Thoracic and Cardiovascular Surgery 2002 7, 152-157DOI: (10.1053/otct.2002.35120) Copyright © 2002 Elsevier Inc. Terms and Conditions