Intra-cardiac myocardial resection device

An intra-cardiac myocardial resection device, comprising an outer-layer protective sleeve (1) and an inner-layer scalpel sleeve (2), wherein an upper end of the outer-layer protective sleeve (1) is bullet-shaped, a top end of the outer-layer protective sleeve (1) is provided with an exhaust hole, an upper sidewall of the outer-layer protective sleeve (1) is provided with a resection window, an upper edge of the resection window is provided with a downward hook (10), an outer sidewall of the outer-layer protective sleeve (1) is provided with handles (3), and a sidewall of the outer-layer protective sleeve (1) is provided with an axial sliding groove (4);

• the inner-layer scalpel sleeve (2) is mounted in the outer-layer protective sleeve (1), the inner-layer scalpel sleeve (2) is in sliding fit with the outer-layer protective sleeve (1), an annular sealing ring (7) is mounted between the inner-layer scalpel sleeve (2) and the outer-layer protective sleeve (1), an upper end of the inner-layer scalpel sleeve (2) is provided with an annular blade (11) having an upward edge, a lower end of the inner-layer scalpel sleeve (2) is closed, a sidewall of the inner-layer scalpel sleeve (2) is provided with a hollow operation handle (6), and the hollow operation handle (6) is communicated with an inner cavity of the inner-layer scalpel sleeve (2) and extends out of the sliding groove (4);
• a circle of silica gel gasket (9) adapted to the annular blade (11) is mounted on the outer-layer protective sleeve (1), the silica gel gasket (9) is positioned on the upper edge of the resection window, and the hook (10) is positioned on an inner side of the silica gel gasket (9);
• and after the inner-layer scalpel sleeve (2) moves upwards to close the annular blade (11) and the silica gel gasket (9), the hook (10) is positioned on an inner side of the annular blade (11).