Temporary lead with insertion tool

Details Temporary lead with insertion tool Temporary lead with insertion tool

1980-09-22

1982-07-27

Kamm, William E.

Surgery

Truss

Pad

128419P, A61N 104

Patent

active

043412262

ABSTRACT:
A temporary lead for pacing or monitoring purposes with insertion tool. The temporary lead is thin and lightweight having an electrical connector at a proximal end and an electrode at a distal end. A length of surgical thread is permanently attached to the electrode. A helix is molded into the surgical thread at a short distance from the electrode. A curved needle is permanently attached to the surgical thread. The curved needle is inserted into a first location of the tissue manually or using the disclosed tool which provides insertion at a fixed depth. The curved needle exits the tissue at a second location. The curved needle and surgical thread are pulled from the second location thus bringing the electrode into sufficient contact with the tissue. The helix is elongated under the stress of tension supplied to pull the electrode into position. The excess surgical thread is cut at the second location, removing the tension. The helix tends to return to its initial shape, thereby holding the electrode in position until removal. A straight cutting needle, crimped to the proximal end of the electrical conductor, leaves the body percutaneously prior to closing the wound. Upon applying longitudinal force at the proximal end, the helix is again elongated and the lead is removed. The insertion tool moves the curved needle in a fixed arc relative a surface held against the tissue surface. The fixed arc causes a fixed insertion depth as the curved needle travels from the first location to the second location.

REFERENCES:
patent: 3244174 (1966-04-01), Wesbey et al.
patent: 3474791 (1969-10-01), Bentov
patent: 4144889 (1979-03-01), Tyers et al.

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