公开(公告)号：CA2194744C

公开(公告)日：2004-10-05

申请号：CA2194744

申请日：1997-01-09

Applicant: MEDTRONIC INC

Inventor： BRENNEN KENNETH R

IPC: A61N1/05

Abstract: An active-fixation medical electrical lead having an improved turning tool. In particular, the lead has a fixation helix attached to a coiled conductor, the coiled conductor is attached at the opposite end ~o a connector assembly. The coiled conductor is covered by an insulative sheath between the fixation helix and the connector assembly. Mating with the connector assembly is the improved turning tool. The turning tool features essentially three components: housing, roller assembly and header. Housing is shaped so as to frictionally couple with a sealing ring of the connector assembly while permitting a connector pin of the connector assembly to extend therethrough and into roller assembly. Through such a combination the roller assembly may be rotated relative to housing thereby causing connector pin to rotate relative to sealing ring and thus extend or retract a fixation helix. Header further permits a stylet to be guided through turning tool and remain within lead while in use. Ultimately such a device permits a physician to extend as well as retract a helix with only one hand.

公开(公告)号：CA2194744A1

公开(公告)日：1997-07-12

申请号：CA2194744

申请日：1997-01-09

Applicant: MEDTRONIC INC

Inventor： BRENNEN KENNETH R

IPC: A61N1/05

Abstract: An active-fixation medical electrical lead having an improved turning tool. In particular, the lead has a fixation helix attached to a coiled conductor, the coiled conductor is attached at the opposite end to a connector assembly. The coiled conductor is covered by an insulative sheath between the fixation helix and the connector assembly. Mating with the connector assembly is the improved turning tool. The turning tool features essentially three components housing, roller assembly and header. Housing is shaped so as to frictionally couple with a sealing ring of the connector assembly while permitting a connector pin of the connector assembly to extend therethrough and into roller assembly. Through such a combination the roller assembly may be rotated relative to housing thereby causing connector pin to rotate relative to sealing ring and thus extend or retract a fixation helix. Header further permits a stylet to be guided through turning tool and remain within lead while in use. Ultimately such a device permits a physician to extend as well as retract a helix with only one hand.

公开(公告)号：CA2023824A1

公开(公告)日：1991-02-24

申请号：CA2023824

申请日：1990-08-22

Applicant: MEDTRONIC INC

Inventor： HOLLEMAN TIMOTHY W ,  DOAN PHONG D ,  BRENNEN KENNETH R ,  SWOYER JOHN M

IPC: A61N1/05 ,  A61N1/02 ,  A61N1/372

Abstract: ATRAUMATIC SCREW-IN LEAD An electrical stimulation lead incorporating an electrode assembly which dispenses a drug adjacent the stimulation site. The lead is provided with a fixation helix located at the distal end of the lead. An electrode may be extended distally within the helix. When extended, the electrode serves as a guard against perforation or other damage to tissue by the helix. In its retracted position, the electrode is located roughly adjacent the distal end of the lead body, and lies against the tissue to be stimulated. Advancing and retraction of the electrode is accomplished by means of a stylet which is removably engageable with the proximal end of the electrode. In one embodiment, the stylet functions to both advance and retract the electrode. In an alternative embodiment, the stylet is used only to advance the electrode, and retraction of the electrode is accomplished by a resilient conductor.

公开(公告)号：CA2416968A1

公开(公告)日：2002-02-07

申请号：CA2416968

申请日：2001-07-02

Applicant: MEDTRONIC INC

Inventor： BRENNEN KENNETH R

IPC: A61B5/06 ,  A61B8/00 ,  A61B8/08 ,  A61N1/05 ,  A61N1/37 ,  A61N1/375 ,  A61N1/39 ,  B06B1/06 ,  G01S15/89

Abstract: An improved system and method to provide visualization of implantable leads, catheters, or other implantable devices is disclosed. According to the invention, an unmodified guiding device such as a stylet or guidewire (5) is frictionally coupled to a vibration device (7). This guiding device (5) is further inserted into the device to be visualized. When activated, the vibration device (7) transfers longitudinal waves to the guiding device, which, in turn, transfers the waves to the device that is to be visualized. These waves are detected by an imaging device (50, 52), which then generates a Doppler image of the implantable device. According to one aspect of the invention, the vibration device includes a piezoelectric actuator. According to another aspect of the invention, the frequency of the waves that are transferred by the vibration device is selectable.

公开(公告)号：AU623326B2

公开(公告)日：1992-05-07

申请号：AU6123790

申请日：1990-08-22

Applicant: MEDTRONIC INC

Inventor： DOAN PHONG ,  BRENNEN KENNETH R ,  HOLLEMAN TIMOTHY W ,  SWOYER JOHN M

IPC: A61N1/05 ,  A61M37/00

Abstract: An electrical stimulation lead incorporating an electrode assembly (10) which dispenses a drug (50) adjacent the stimulation site. The lead is provided with a fixation helix (17) located at the distal end of the lead. An electrode (14) may be extended distally within the helix (17). When extended, the electrode (14) serves as a guard against perforation or other damage to tissue by the helix (17). In its retracted position, the electrode (14) is located roughly adjacent the distal end of the lead body, and lies against the tissue to be stimulated. Advancing and retraction of the electrode is accomplished by means of a stylet (24) which is removably engageable with the proximal end of the electrode (14). In one embodiment, the stylet (24) functions to both advance and retract the electrode (14). In an alternative embodiment, the stylet (24) is used only to advance the electrode (14), and retraction of the electrode (14) is accomplished by a resilient conductor.

公开(公告)号：ES2017187A6

公开(公告)日：1991-01-01

申请号：ES8903650

申请日：1989-10-27

Applicant: MEDTRONIC INC

Inventor： UNTEREKER DARREL F ,  PHIPPS JOSEPH B ,  CAHALAN PATRICK T ,  BRENNEN KENNETH R

IPC: A61N1/04 ,  A61N1/30

Abstract: ELECTRODO DE IONTOFORESIS. UN ELECTRODO DE IONTOFORESIS MEJORADO QUE EMPLEA UN MIEMBRO DE DISTRIBUCION DE CORRIENTE Y UN RECIPIENTE DE DROGA QUE CONTIENE UNA DROGA IONICA. EL RECIPIENTE DE LA DROGA SE APLICA A LA PIEL DE UN PACIENTE E INCLUYE UNA MEMBRANA PERMEABLE A LOS IONES SELECTIVA DE CARGA ADAPTADA PARA ENTRAR EN CONTACTO CON LA PIEL, A TRAVES DE LA CUAL SE ADMINISTRA LA DROGA IONICA.

公开(公告)号：DE69717873D1

公开(公告)日：2003-01-30

申请号：DE69717873

申请日：1997-01-13

Applicant: MEDTRONIC INC

Inventor： BRENNEN KENNETH R

IPC: A61N1/05

Abstract: An active-fixation medical electrical lead having an improved turning tool. In particular, the lead has a fixation helix attached to a coiled conductor, and the coiled conductor is attached at the opposite end to a connector assembly. The coiled conductor is covered by an insulative sheath between the fixation helix and the connector assembly. Mating with the connector assembly is the improved turning tool (20). The turning tool features essentially three components: housing (21), roller assembly (22) and header (23). The housing is shaped so as to frictionally couple (29) with a sealing ring of the connector assembly while permitting a connector pin of the connector assembly to extend therethrough and into roller assembly (22). Through such a combination the roller assembly may be rotated relative to the housing thereby causing the connector pin to rotate relative to the sealing ring and thus extend or retract the fixation helix. The header (23) further permits a stylet to be guided through the turning tool and remain within the lead while in use. Ultimately such a device permits a physician to extend as well as retract a helix with only one hand.

公开(公告)号：CA2426328A1

公开(公告)日：2002-05-10

申请号：CA2426328

申请日：2001-10-05

Applicant: MEDTRONIC INC

Inventor： SCHINDELDECKER WILLIAM ,  STROM JAMES ,  BRENNEN KENNETH R ,  BRABEC SCOTT J

IPC: A61B5/00 ,  A61B5/296 ,  A61N1/05 ,  A61N1/365 ,  A61B5/0402 ,  A61B5/042

Abstract: An implantable pacemaker is provided with subcutaneous spiral electrodes for sensing electrical signals of the heart. Subcutaneous spirals or spiral electrodes are embedded individually into three or four recessed casings placed in a compliant surround that is attached to the perimeter of the implanted medical device. The electrodes are electrically connected to the circuitry of the implanted pacemaker and detect cardiac depolarization waveforms displayable as electrocardiographic tracings on an external instrument such as a programmer. The spiral electrode constitutes the proxim al end of a continuous wire that upon egress from the recessed casing is insulated using insulative material.

公开(公告)号：AU1011997A

公开(公告)日：1997-07-24

申请号：AU1011997

申请日：1997-01-10

Applicant: MEDTRONIC INC

Inventor： BRENNEN KENNETH R

IPC: A61N1/05

Abstract: An active-fixation medical electrical lead having an improved turning tool. In particular, the lead has a fixation helix attached to a coiled conductor, and the coiled conductor is attached at the opposite end to a connector assembly. The coiled conductor is covered by an insulative sheath between the fixation helix and the connector assembly. Mating with the connector assembly is the improved turning tool (20). The turning tool features essentially three components: housing (21), roller assembly (22) and header (23). The housing is shaped so as to frictionally couple (29) with a sealing ring of the connector assembly while permitting a connector pin of the connector assembly to extend therethrough and into roller assembly (22). Through such a combination the roller assembly may be rotated relative to the housing thereby causing the connector pin to rotate relative to the sealing ring and thus extend or retract the fixation helix. The header (23) further permits a stylet to be guided through the turning tool and remain within the lead while in use. Ultimately such a device permits a physician to extend as well as retract a helix with only one hand.

公开(公告)号：MX174131B

公开(公告)日：1994-04-22

申请号：MX1812089

申请日：1989-10-27

Applicant: MEDTRONIC INC

Inventor： BRENNEN KENNETH R ,  UNTEREKER DARREL F ,  PHIPPS JOSEPH B ,  CAHALAN PATRICK T

IPC: A61N1/04 ,  A61N1/30

Abstract: An improved iontophoresis electrode employing a current distributing member and a drug reservoir containing an ionic drug. The drug reservoir is applied to the skin of a patient, and includes a charge selective ion permeable membrane adapted to contact the skin, through which the ionic drug is delivered.