LEAD TERMINAL CONNECTOR PIN WITH A LASER ENGRAVED COLOR
Publication Date: 2005-Aug-23
The IP.com Prior Art Database
This paper describes a means to identify complete insertion of a lead's connector assembly into an implantable medical device, thereby allowing the implanting physician to verify such full engagement. The use of laser energy technology to create a contrasting color band provides a precise, consistent and wear resistant marking.
WITH A LASER ENGRAVED COLOR BAND
Leads represent the electrical link between an implantable medical device (such as a pacemaker, an anti-tachycardia device, a cardioverter, a defibrillator or combinations thereof) and cardiac tissue, which is to be excited or sensed. These leads may include single or multiple conductors that are connected to an electrode in an electrode assembly at an intermediate portion and/or a distal end of the lead. A connector assembly is included at a proximal end of the lead to form an electrical connection between the electrode assembly and the implantable medical device. The connector assembly typically includes one or more lead terminal rings in addition to a lead terminal connector pin.
A means to identify complete engagement of a lead’s connector assembly and an implantable medical device is desirable. Once a lead is implanted within a patient and the electrode assembly thereon is positioned and fixated (by an implanting physician) at a desired location within the patient’s heart, the lead’s connector assembly is typically inserted into the implantable medical device. Due to the nature and environmental conditions to which implantable medical systems (e.g., the lead and implantable medical device combination described herein) are subjected to, it is important that the lead’s connector assembly is fully engaged with (i.e., completely inserted into) the implantable medical device. A means to identify complete insertion of the lead’s connector assembly into the implantable medical device would allow the implanting physician to verify such full engagement.
In one example, an implantable medical system includes a method and an apparatus for communicating complete insertion of a lead’s connector assembly into an implantable medical device to an implanting physician or a manufacturer. In another example, the method and apparatus provide for, or include (respectively), a contrasting color band on the circumference of a lead terminal connector pin of the lead’s connector assembly. The contrasting color feature on the lead terminal connector pin allows the implanting physician or manufacturer to verify complete insertion of the lead into the implantable medical device provided that the implantable medical device allows for the appropriate visibility to the desired area of the lead’s connector assembly. The method and apparatus may be used with various lead constructions, such as multipolar (e.g., bipolar or quadripolar), unipolar, uniradial, coaxial, or coradial (i.e., two or more conduction wires wound together to form a single conductor coil) lead constructions.
In one example, the contrasting color band is engraved on the circumference of a lead terminal connector pin composed of MP35N alloy. (MP35N is a trademark of SPS Technologies, Inc...