초록 ▼

A catheter for cardiac mapping includes a tubular catheter shaft having a proximal end, a distal end, and a lumen, the lumen being optionally closed at the distal end. The catheter further includes a plurality of flexible arms which can bow outwardly to form a three-dimensional shape, such as a bask

A catheter for cardiac mapping includes a tubular catheter shaft having a proximal end, a distal end, and a lumen, the lumen being optionally closed at the distal end. The catheter further includes a plurality of flexible arms which can bow outwardly to form a three-dimensional shape, such as a basket shape. These arms have distal and proximal ends, optionally have a semi-circular cross-sectional shape, and are connected at their proximal ends to the distal end of the catheter shaft. Each arm carries at least one electrode, an electrode lead wire electrically connected to each electrode carried on the arm, and a tubular sheath surrounding the lead wires. The catheter further includes a distal fitting fixing the distal ends of the arms together and a puller wire extending through the lumen. The puller wire comprises a distal end attached to the distal fitting and a proximal end extending out of the proximal end of the catheter shaft whereby the basket shape is expanded outwardly when a force directed in the proximal direction is applied to the puller wire. An electronic recorder can be electrically connected to the electrodes for electrically recording electric signals received by the electrodes.

대표청구항 ▼

[ What is claimed is:] [1.] A catheter for cardiac mapping comprising:a tubular catheter shaft having a proximal end, a distal end, and a central lumen, the central lumen being closed at the distal end;a plurality of flexible arms which can bow outwardly to form a three-dimensional shape, the arms h

[ What is claimed is:] [1.] A catheter for cardiac mapping comprising:a tubular catheter shaft having a proximal end, a distal end, and a central lumen, the central lumen being closed at the distal end;a plurality of flexible arms which can bow outwardly to form a three-dimensional shape, the arms having distal and proximal ends and a semi-circular cross-sectional shape, the arms being connected at their proximal ends to the distal end of the catheter shaft, each arm carrying at least one electrode, an electrode lead wire electrically connected to each electrode carried on the arm, and a tubular sheath surrounding the lead wires;a distal fitting fixing the distal ends of the arms together; anda puller wire extending through the central lumen, the puller wire comprising a distal end attached to the distal fitting, and a proximal end extending out of the proximal end of the catheter shaft whereby the basket shape is expanded outwardly when a force directed in the proximal direction is applied to the puller wire.