Medical probe with variable tip length and shape

Details Medical probe with variable tip length and shape Medical probe with variable tip length and shape

2005-08-02

2005-08-02

Cohen, Lee S. (Department: 3739)

Surgery

Diagnostic testing

Structure of body-contacting electrode or electrode inserted...

C606S041000, C607S122000

Reexamination Certificate

active

06925318

ABSTRACT:
A tip assembly that can be varied in length and/or shape is coupled to an elongated sheath to form a medical probe, such as a catheter or surgical probe. For example, the medical probe can be an electrophysiology (EP) catheter that that can be used to map the electrical activity of target tissue and ablate the target tissue when medically indicated. In one embodiment, the tip assembly has a tip and a sleeve configured such that the tip can be longitudinally extended and retracted in response to longitudinal forces applied by an actuator. In another embodiment, the tip extends and retracts, on threads, relative to the sleeve in response to rotational forces applied by an actuator. In still another embodiment, the tip assembly has a distal tip, a proximal section and an expandable-compressible assembly between the tip and proximal section. The expandable-compressible assembly is configured to be longitudinally compressed and expanded, expanding radially outward when compressed, and compressing radially inward when longitudinally expanded, thereby altering the tip assembly shape.

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patent: 2002/0049424 (2002-04-01), Fulford
patent: 2002/0052641 (2002-05-01), Monroe

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