The embodiments described herein relate to a self-positioning, quick-deployment low profile transvenous electrode system for sequentially pacing both the atrium and ventricle of the heart in the “dual chamber” mode, and methods for deploying the same.

Medical articles formed from a polyurethane-based resin including an ionically-charged modifier provide enhanced properties. The polyurethane-based resin is a reaction product of ingredients comprising: a diisocyanate; a diol chain extender; a polyglycol; and an anionic modifier incorporated into a backbone, as a side chain, or both of the polyurethane-based resin. Exemplary anionic modifier includes 2,2-bis(hydroxymethyl)butyric acid (BHMBA) and/or bis-1,4-((2-hydroxypropoxy)-2-propoxy)-butane sulfonate sodium salt (SULFADIOL®-7Q). Medical articles herein either have inherent antimicrobial and/or anti-fouling characteristics or can easily bond cationic active agents to provide desirable material properties, including antimicrobial, anti-fouling, and/or radiopacity.

Medical articles formed from a polyurethane-based resin including an ionically-charged modifier provide enhanced properties. The polyurethane-based resin is a reaction product of ingredients comprising: a diisocyanate; a diol chain extender; a polyglycol; and an anionic modifier incorporated into a backbone, as a side chain, or both of the polyurethane-based resin. Exemplary anionic modifier includes 2,2-bis(hydroxymethyl)butyric acid (BHMBA) and/or bis-1,4-((2-hydroxypropoxy)-2-propoxy)-butane sulfonate sodium salt (SULFADIOL®-7Q). Medical articles herein either have inherent antimicrobial and/or anti-fouling characteristics or can easily bond cationic active agents to provide desirable material properties, including antimicrobial, anti-fouling, and/or radiopacity.

A device for extracting an endovascular stent graft from a vessel including a cylindrical body and an opening formed in the cylindrical body. The cylindrical body has a first open end, a second open end, and a sidewall surrounding a hollow bore of the cylindrical body. The opening is formed in the sidewall between the first open end and the second open end forming a first ring portion at the first open end and a second ring portion at the second open end. Additionally, a diameter of the first open end is greater than a diameter of the second open end.

A device for extracting an endovascular stent graft from a vessel including a cylindrical body and an opening formed in the cylindrical body. The cylindrical body has a first open end, a second open end, and a sidewall surrounding a hollow bore of the cylindrical body. The opening is formed in the sidewall between the first open end and the second open end forming a first ring portion at the first open end and a second ring portion at the second open end. Additionally, a diameter of the first open end is greater than a diameter of the second open end.

A device for extracting an endovascular stent graft from a vessel including a cylindrical body and an opening formed in the cylindrical body. The cylindrical body has a first open end, a second open end, and a sidewall surrounding a hollow bore of the cylindrical body. The opening is formed in the sidewall between the first open end and the second open end forming a first ring portion at the first open end and a second ring portion at the second open end. Additionally, a thickness of the sidewall at the first open end tapers toward the opening and wherein a thickness of the sidewall at the second open end tapers toward the opening such that the hollow bore is narrower at each end than at the opening.

A device for extracting an endovascular stent graft from a vessel including a cylindrical body and an opening formed in the cylindrical body. The cylindrical body has a first open end, a second open end, and a sidewall surrounding a hollow bore of the cylindrical body. The opening is formed in the sidewall between the first open end and the second open end forming a first ring portion at the first open end and a second ring portion at the second open end. Additionally, a thickness of the sidewall at the first open end tapers toward the opening and wherein a thickness of the sidewall at the second open end tapers toward the opening such that the hollow bore is narrower at each end than at the opening.

Certain embodiments relate to a soft odor barrier material in a medical device. The soft odor barrier material includes an elastomer and an antiblocking agent. In certain forms, the antiblocking agent imparts an interior rough surface having an arithmetic mean surface roughness (Ra) not less than 0.1 μm. In certain forms, the antiblocking agent is non-blocking upon folding and packaging.

Certain embodiments relate to a soft odor barrier material in a medical device. The soft odor barrier material includes an elastomer and an antiblocking agent. In certain forms, the antiblocking agent imparts an interior rough surface having an arithmetic mean surface roughness (Ra) not less than 0.1 μm. In certain forms, the antiblocking agent is non-blocking upon folding and packaging.

An elongate, flexible, medical device having distal and proximal ends, including an inner member having a proximal and distal end, a support member extending around the inner member between the proximal and distal end, a plurality of electrically-conductive wires, each braided with the support member having a proximal and distal end, an outer member surrounding the inner member, the support member, and the plurality of electrically-conductive wires and an actuator including a polymer electrolyte layer secured adjacent to the distal end of the elongate, flexible inner member and defining an exterior surface, electrodes distributed about the exterior of the polymer electrolyte layer. The distal end of one of the electrically-conductive wires is electrically connected to one of the electrodes. The polymer electrolyte layer is configured to deform asymmetrically in response to the application of an electrical signal through the plurality of electrically-conductive wires to the plurality of electrodes.