Temporary Intra-operative Placement of HLT Percutaneous Aortic Valve
试验速览
- 阶段
- 不适用
- 发起方
- 入组人数
- 7
- 试验地点
- 2
- 主要终点
- geometrical evaluation of HLT pliability to patient's native aortic valve
研究概览
简要总结
The study will be conducted in patients who are undergoing surgical aortic valve replacement on cardiopulmonary bypass. Following surgical access of the native aortic valve and prior to removal of the valve, the native valve will be dilated using a standard valve dilation balloon. The Heart Leaflet Technologies(HLT- Heart Leaflet Technologies Inc.) aortic valve device will be released in the native valve and measurements will be taken of the device relative to the anatomic structures of the heart. Once completed, the implant is removed from the native valve and the surgical valve replacement procedure is completed.
The purpose of this study is to confirm that the dimensions of the HLT valve are appropriate for patients with aortic valve stenosis.
详细描述
Aortic valve stenosis is a disease in which the leaflets of the aortic valve become scarred and calcified. This leads to a severe narrowing of the valve orifice, which causes chest pain, heart failure and eventually death. The condition is currently treated with open chest surgical valve replacement on cardiopulmonary bypass. Heart Leaflet Technologies has developed an aortic valve prosthesis that can be delivered to the stenotic aortic valve through a catheter inserted in the femoral artery.
The purpose of this study is to confirm that the dimensions of the HLT valve are appropriate for patients with aortic valve stenosis. There is no animal model of aortic valve stenosis. Heart Leaflet Technologies has performed extensive device geometry and deployment testing on fixed cadaveric hearts with calcified cusps and aortic stenosis. HLT has also performed a number of preclinical animal experiments to verify deliverability and device function in vivo.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Single Group
- 盲法
- None
入排标准
- 年龄范围
- 75 Years 至 80 Years（Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patients undergoing aortic valve replacement for aortic valve stenosis with a preoperative valve area < 0.9 cm
- •A preoperative echocardiogram where the aortic annulus diameter can be measured and is between 19 and 25 mm internal diameter.
- •Age 75 to 80 years
排除标准
- •Emergency valve surgery
- •Significant ascending aortic disease (atheroma, extensive calcification, dissection) as assessed by the operating surgeon
- •Ostial coronary obstruction > 25% diameter stenosis
结局指标
主要结局
geometrical evaluation of HLT pliability to patient's native aortic valve
时间窗: during surgery procedure
次要结局
未报告次要终点