Vascular access ports and related methods
First Claim
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1. A vascular access port configured to be implanted subcutaneously, the vascular access port comprising:
- a base that extends in a longitudinal direction and in a transverse direction, wherein the base is configured to be bowed in the transverse direction when the vascular access port is attached to a vessel so as to conform to a contour of a wall of a vessel, and wherein the longitudinal direction of the base is configured to run substantially parallel to a lumen of the vessel when the vascular access port is attached to the vessel;
a guidance passageway that extends through the vascular access port and defines an opening in the base, wherein the guidance passageway comprises a funnel region that decreases in size toward a channel and is rearward of the channel, wherein a central axis that extends through the guidance passageway defines an acute angle relative to a longitudinal length of the base, and wherein the acute angle points in a forward direction toward a front end of the vascular access port; and
an ingrowth-inducing covering on the base, wherein at least a portion of the ingrowth-inducing covering is between the opening of the guidance passageway and the front end of the vascular access port, and wherein the ingrowth-inducing covering is configured to promote attachment of the vascular access port to a vessel so as to maintain the opening of the guidance passageway at a fixed position relative to a wall of the vessel.
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Abstract
Ports for accessing a vessels within a patient include passageways that can guide needles or other access devices directly into the vessels. The ports can be implanted subcutaneously within a patient. Some ports may be used in the creation and use of vascular access buttonholes.
125 Citations
21 Claims
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1. A vascular access port configured to be implanted subcutaneously, the vascular access port comprising:
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a base that extends in a longitudinal direction and in a transverse direction, wherein the base is configured to be bowed in the transverse direction when the vascular access port is attached to a vessel so as to conform to a contour of a wall of a vessel, and wherein the longitudinal direction of the base is configured to run substantially parallel to a lumen of the vessel when the vascular access port is attached to the vessel; a guidance passageway that extends through the vascular access port and defines an opening in the base, wherein the guidance passageway comprises a funnel region that decreases in size toward a channel and is rearward of the channel, wherein a central axis that extends through the guidance passageway defines an acute angle relative to a longitudinal length of the base, and wherein the acute angle points in a forward direction toward a front end of the vascular access port; and an ingrowth-inducing covering on the base, wherein at least a portion of the ingrowth-inducing covering is between the opening of the guidance passageway and the front end of the vascular access port, and wherein the ingrowth-inducing covering is configured to promote attachment of the vascular access port to a vessel so as to maintain the opening of the guidance passageway at a fixed position relative to a wall of the vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20)
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15. A vascular access port comprising:
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a base that extends in a longitudinal direction and in a transverse direction, wherein the base is configured to be bowed in the transverse direction when the vascular access port is attached to a vessel so as to conform to a contour of a wall of a vessel, and wherein the longitudinal direction of the base is configured to run substantially parallel to a lumen of the vessel when the vascular access port is attached to the vessel; a guidance passageway that extends through the vascular access port, wherein the guidance passageway comprises a funnel region that decreases in size toward a channel and is rearward of the channel, wherein a central axis defined by the guidance passageway defines an acute angle relative to a longitudinal length of the base, and wherein the acute angle points in a forward direction toward a front end of the vascular access port; and an attachment passage forward of the guidance passageway through which an attachment device can extend to connect the vascular access port to a vessel so as to resist forward movement of the vascular access port relative the vessel as an access device is advanced toward or through the guidance passageway. - View Dependent Claims (21)
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Specification