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US 10,765,837 B2Granted
Method and device for sheathless arterial catheterization
AssigneeCardinal Health Switzerland 515 GmbH
InventorKintur A. Sanghvi
Life of this patent
Estimating the term…
Abstract
A dilator for sheathless access to a vessel of a patient, having a distal portion with a maximal outer diameter that extends from a distal end to a guidewire exit port and a proximal portion with a reduced profile that extends from the guidewire exit port to the proximal end and a lumen that extends between the distal end and the guidewire exit port. A first guidewire may be positioned within the vessel and the dilator advanced over the guidewire. A guide catheter may then be advanced over the dilator.
Claims20
A kit for gaining access to a vessel of a patient, comprising:
- a first dilator having an elongated body with proximal and distal ends, a distal portion with a maximal outer diameter having a cylindrical configuration that extends from the distal end to a guidewire exit port, a proximal portion with a reduced profile having a semi-cylindrical configuration that extends from the guidewire exit port to the proximal end and a lumen defined by an inner wall that extends between the distal end and the guidewire exit port, wherein a portion of the inner wall continues to extend through the proximal portion;
- and
- a second dilator having an elongated body with proximal and distal ends, a distal portion with a maximal outer diameter having a cylindrical configuration that extends from the distal end to a guidewire exit port, a proximal portion with a reduced profile having a semi-cylindrical configuration that extends from the guidewire exit port to the proximal end and a lumen defined by an inner wall that extends between the distal end and the guidewire exit port, wherein a portion of the inner wall continues to extend through the proximal portion;
- wherein the first dilator is configured to be inserted into a radial artery, and the second dilator is configured to be inserted into the radial artery upon removal of the first dilator;
- wherein the lumen of the first dilator has a smaller inner diameter than the lumen of the second dilator;
- and
- wherein the maximal outer diameter distal portion of the first dilator has an outer diameter the same as the maximal outer diameter distal portion of the second dilator.
4 more elements
A method for gaining access to a radial artery of a patient, comprising:
- providing a first dilator having an elongated body with proximal and distal ends, a distal portion with a maximal outer diameter having a cylindrical configuration that extends from the distal end to a guidewire exit port, a proximal portion with a reduced profile having a semi-cylindrical configuration that extends from the guidewire exit port to the proximal end and a lumen that extends between the distal end and the guidewire exit port;
- positioning a first guidewire within the radial artery of the patient;
- advancing the first dilator over the first guidewire into the radial artery without being inserted through a sheath;
- advancing a first guide catheter over the first dilator;
- removing the first dilator;
- providing a second dilator having an elongated body with proximal and distal ends, a distal portion with a maximal outer diameter having a cylindrical configuration that extends from the distal end to a guidewire exit port, a proximal portion with a reduced profile having a semi-cylindrical configuration that extends from the guidewire exit port to the proximal end and a lumen that extends between the distal end and the guidewire exit port;
- and
- introducing the second dilator through the first guide catheter and positioning a distal end of the second dilator at a desired region of the radial artery, wherein the lumen of first dilator has a smaller inner diameter than a lumen of the second dilator;
- wherein the maximal outer diameter distal portion of the first dilator has an outer diameter the same as the maximal outer diameter distal portion of the second dilator.
6 more elements
Dependencies are inferred from the claim text.