A catheter including a tubular catheter body defining a distal portion, a distal end and a lumen that extends to the distal end, a radiopaque marker carried within the lumen, and a non-metal tip that is bonded to distal end of the catheter body.

A catheter including a tubular catheter body defining a distal portion, a distal end and a lumen that extends to the distal end, a radiopaque marker carried within the lumen, and a non-metal tip that is bonded to distal end of the catheter body.

The invention relates to a rod-shaped body (1) comprised of one or more filaments (2) and of a non-ferromagnetic matrix material (3). The matrix material (3) surrounds the filament(s) (1) and/or adheres them to one another. The rod-shaped body is also comprised of a dopant consisting of particles that generate magnetic resonance tomographic artifacts that is introduced into the matrix material (3). Rod-shaped bodies of this type can be used to construct guide wires, catheters and other instruments to be used in minimally invasive surgical interventions.

The invention relates to a rod-shaped body (1) comprised of one or more filaments (2) and of a non-ferromagnetic matrix material (3). The matrix material (3) surrounds the filament(s) (1) and/or adheres them to one another. The rod-shaped body is also comprised of a dopant consisting of particles that generate magnetic resonance tomographic artifacts that is introduced into the matrix material (3). Rod-shaped bodies of this type can be used to construct guide wires, catheters and other instruments to be used in minimally invasive surgical interventions.

A catheter can include an extruded shaft that includes a lumen extending from a proximal end to a distal end and a sidewall that defines at least a portion of the lumen, the sidewall includes a siliconized polycarbonate polyurethane of a specified formulation. Due to the formulation, the sidewall can be alcohol resistant, which can, in some instances, permit alcohol locking of the catheter.

A catheter can include an extruded shaft that includes a lumen extending from a proximal end to a distal end and a sidewall that defines at least a portion of the lumen, the sidewall includes a siliconized polycarbonate polyurethane of a specified formulation. Due to the formulation, the sidewall can be alcohol resistant, which can, in some instances, permit alcohol locking of the catheter.

A magnetic resonance compatible catheter. The catheter incorporates directional high intensity ultrasound. The catheter may include imaging coils visible through magnetic resonance imaging. The location and placement of the catheter may be controlled by steering wires within lumen in the catheter guided by the location information from the magnetic resonance imaging.

A magnetic resonance compatible catheter. The catheter incorporates directional high intensity ultrasound. The catheter may include imaging coils visible through magnetic resonance imaging. The location and placement of the catheter may be controlled by steering wires within lumen in the catheter guided by the location information from the magnetic resonance imaging.

Methods have been discovered that make it possible to continuously extrude tubes of P4HB and copolymers thereof. These methods allow tubes of P4HB and copolymers thereof to be produced without radial deformation of the tubes despite the slow crystallization of the polymer and copolymers. The methods can produce tubes of P4HB and copolymers thereof with tightly defined outside and inside diameters which are required for medical application. These tubes are produced by radial expansion at temperatures above the melting temperature of P4HB and copolymers thereof, and using low tube cooling temperatures and prolonged cooling times. The tubes made from P4HB and copolymers thereof are flexible, and can be prepared with high elongation to break values.

Methods have been discovered that make it possible to continuously extrude tubes of P4HB and copolymers thereof. These methods allow tubes of P4HB and copolymers thereof to be produced without radial deformation of the tubes despite the slow crystallization of the polymer and copolymers. The methods can produce tubes of P4HB and copolymers thereof with tightly defined outside and inside diameters which are required for medical application. These tubes are produced by radial expansion at temperatures above the melting temperature of P4HB and copolymers thereof, and using low tube cooling temperatures and prolonged cooling times. The tubes made from P4HB and copolymers thereof are flexible, and can be prepared with high elongation to break values.