Medtronic, Inc.

Dlp Limited

Boston University

Kenneth R Jonkman

Michael R S Hill

Paul F Rom

James D Fonger

James H DeVries

Michael R Hill

Donald R Sandmore

James H Anderson

Sally E Mitchell

James H De Vries

Patrick J Kiefer

An electro-stimulation device includes a pair of electrodes for connection to at least one location in the body that affects or regulates the heartbeat. The electro-stimulation device both electrically arrests the heartbeat and stimulates the heartbeat. A pair of electrodes are provided for connection to at least one location in the body that affects or regulates the heartbeat. The pair of electrodes may be connected to an intravenous catheter for transvenous stimulation of the appropriate nerve. In another aspect, the invention is directed to a method for arresting the beat of a heart in a living body comprising the steps of connecting the pair of electrodes to at least one location in the body that affects or regulates the heartbeat and supplying an electrical current to the electrodes of sufficient amplitude and duration to arrest the heartbeat.

Method and device for electronically controlling the beating of a heart

An intravascular balloon occlusion device according to the invention is shown. The device is ideally suited for use in a coronary artery bypass graft procedure. The device includes a body having at least one selectively inflated balloon provided on the distal end thereof. Preferably, the body is a closed end body so that fluid can only flow from the proximal end of the body into the balloon. In use, the distal end of the body and the balloon are inserted into an aperture provided in the aorta. The balloon is inflated and then the device is retracted until the balloon seats against the incision or aperture in the aorta, thereby effectively sealing the aperture from the blood flow through the aorta, but not occluding blood flow through the body of the aorta itself. Next, the graft vessel is telescopically positioned on the occlusion device and mounted to the aorta. Once the vessel is secured thereto, the balloon is deflated and then the occlusion device is retracted from both the aorta and the graft vessel. Finally, the second end of the graft vessel is mounted to the appropriate coronary artery.

Intravascular balloon occlusion device and method for using the same

An electro-stimulation device includes a pair of electrodes for connection to at least one location in the body that affects or regulates the heartbeat. The electro-stimulation device both electrically arrests the heartbeat and stimulates the heartbeat. A pair of electrodes are provided for connection to at least one location in the body that affects or regulates the heartbeat. The pair of electrodes may be connected to an intravenous catheter for transvenous stimulation of the appropriate nerve. A first switch is connected between a power supply and the electrodes for selectively supplying current from the power supply to the electrodes to augment any natural stimuli to the heart and thereby stop the heart from beating. A second switch is connected between the power supply and the electrodes for selectively supplying current from the power supply to the electrodes to provide an artificial stimulus to initiate heartbeating. In another aspect, the invention is directed to a method for arresting the beat of a heart in a living body comprising the steps of connecting the pair of electrodes to at least one location in the body that affects or regulates the heartbeat and supplying an electrical current to the electrodes of sufficient amplitude and duration to arrest the heartbeat. The device may also serve to still the lungs by input to a respirator or by stimulation of the phrenic nerve during surgical procedures.

Method and device for electronically controlling the beating of a heart using venous electrical stimulation of nerve fibers

Intravascular balloon occlusion device

A cannula assembly for insertion in a blood vessel includes a cannula and a dilator. The cannula has a proximal end, a distal end, and a lumen extending therebetween. The dilator, which is telescopically received in the lumen of the cannula, includes proximal and distal ends, a passage extending between the proximal and distal ends, and a dilator tip disposed at the distal end. The cannula assembly further includes a needle and a guide wire disposed within the passage of the dilator. The dilator tip has an opening formed therein for receiving one of the needle and guide wire. The dilator tip is configured to limit insertion of the needle in the blood vessel.

Cannula placement system

Method for using intravascular balloon occlusion device

A method of pressurizing the right ventricle of the heart. The method includes providing a multi-lumen cannula. The multi-lumen cannula includes a first sub-cannula and a second sub-cannula. The first sub-cannula includes a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen. The second sub-cannula includes a proximal end, a distal end, a lumen extending between the proximal and distal ends, and proximal and distal fluid apertures formed in the lumen. The distal fluid apertures of the two lumens are spaced from one another along the axial length of the multi-lumen cannula. The method further includes inserting the cannula into the vasculature system of a patient so that the distal fluid aperture of the lumen of the second sub-cannula is received in one of the right atrium, the superior vena cava, and the inferior vena cava. The distal fluid aperture of the lumen of the first sub-cannula is received in the right ventricle. The method of pressurizing the right ventricle still further includes fluidly connecting the proximal fluid apertures of the first and second sub-cannulas to a fluid conducting pump for moving fluid through the two sub-cannulas.

Method of pressurizing the right ventricle of the heart

Method of placing a cannula

A cannula for conducting fluid to a body includes a cannula body having proximal and distal ends and a lumen extending therebetween. The lumen is adapted to receive the fluid flowing therethrough. The cannula also includes a cannula tip, which is coupled to the distal end of the cannula body. The canula tip includes a side wall having a plurality of fluid outlets formed therein. Each fluid outlet is directed toward the proximal end of the cannula body to reverse the flow of fluid exiting the cannula by an obtuse angle from the original direction of flow.

Cannula having reverse flow tip

An improved aortic cannula is formed from a cannula body and a tip provided on the distal end of the cannula body wherein the tip is designed to accommodate the fluid flow requirements of an extracorporeal bypass system while simultaneously minimizing any possible adverse impact of the cannula and fluid flow on the vessel in which the cannula is received. The tip has an axial fluid discharge aperture provided at the distal end thereof through which a portion of the fluid exiting the cannula flows. In addition, at least one lateral fluid discharge aperture is provided in the sidewall of the tip. A scoop or other diverting member is formed in the sidewall to direct a portion of the fluid flowing through the tip to exit the cannula through the lateral fluid discharge apertures.

Growing community of inventors

Grand Rapids, MI, United States of America

Kenneth R Jonkman