A bendable puncture sheath with a simple structure, is easy to use, facilitates a delivery sheath (3) to rapidly access a heart defect site, and conveniently enables a doctor to precisely position a spatial angle of a heart defect or anomaly. The bendable puncture sheath comprises: a delivery sheath handle (1), a delivery sheath (3), a puncture sheath tube (5), a puncture sheath base (4), a spring (6), a puncture sheath tube core tip (7), and a traction wire (83). The delivery sheath handle (1) is tube-shaped. The delivery sheath (3) is tube-shaped and has a left end connecting to the delivery sheath handle (1). A left end of the puncture sheath tube (5) connects to the puncture sheath base (4). The puncture sheath tube (5) passes through an inner cavity of the delivery sheath handle (1) and extends into the delivery sheath (3). The spring (6) connects to a right end of the puncture sheath tube (5) and to the puncture sheath tube core tip (7). The puncture sheath tube core tip (7) has a bullet-shaped head. A left side of the tip is the larger side. The puncture sheath base (4) is provided with a directional guiding hole (41). One end of the traction wire (83) connects to a right end of the spring (6), and the other end thereof passes through an inner cavity of the delivery sheath (3), the inner cavity of the delivery sheath handle (1), and the directional guiding hole (41) of the puncture sheath base (4) in that order.La présente invention concerne une gaine de perforation souple de structure simple, facile à utiliser, facilitant laccès rapide dune gaine dadministration (3) à un site de malformation cardiaque, et permet à un médecin de localiser précisément un angle spatial dune malformation ou dune anomalie du cœur. La gaine de perforation souple comprend : une poignée de gaine dadministration (1), une gaine dadministration (3), un tube de gaine de perforation (5), une base de gaine de perforation (4), un ressort (6), un embout de noyau tubulaire de gaine de perfor
