Electrical connectors and intravascular devices are provided. A connector for connecting an intravascular device comprises a first connection piece (204,304) and a second connection piece (202,302) that is translatable relative to the first connection piece between an open position of the connector when the intravascular device is removable from the connector and a closed position when the intravascular device is secured to the connector. The proximal portion of the intravascular device comprises a first subsection (118) located between a second subsection (114) and a third subsection (120), and wherein the first diameter (124) of the first subsection is smaller than a second diameter (122) of the second subsection and the third subsection. The first connection piece comprises a recess (252,352) sized such that the first subsection (118) of the intravascular device is receivable by the recess for coupling the connector to the proximal portion of the intravascular device, while a second subsection and a third subsections are not receivable by the recess.
