Implantable access port device having a safety cap
First Claim
Patent Images
1. An access port assembly comprising:
- an access port having a generally central axis and including a bottom, a sidewall, and a needle penetrable septum;
a housing that houses the access port, the housing including an actuator element rotatable about the central axis, the actuator element having a plurality of force protrusions extending radially outwardly from the actuator element; and
an attachment mechanism structured to enable the access port to be attached to bodily tissue, the attachment mechanism having a plurality of rotatable anchors movable from an undeployed state to a deployed state,wherein each rotatable anchor has a main body and a separately formed shaft immovably secured to the main body, the shaft defining an axis of rotation of the anchor, wherein the anchors are concealed and contained by the housing when in the undeployed state, wherein the main body includes (1) an inner concave portion that extends from the shaft to a first end, (2) an outer concave portion that extends about the inner concave portion from a second end to a tip portion at a distal end of the main body, and (3) a locking bend portion extending in a curve from the first end of the inner concave portion to the second end of the outer concave portion, wherein the cross section of the main body is constant at least between the shaft and the tip portion, and wherein the main body is a continuously formed member, andwherein the inner concave portion has opposing concave and convex surfaces and wherein the force protrusion portions glide on the concave surface of the inner concave portion when the actuator element is rotated about the central axis to effect rotation of the anchor about the shaft.
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Abstract
A system for attaching an access port to bodily tissue includes an access port assembly and including an access port having a generally central axis. The access port assembly further includes an attachment mechanism structured to enable the access port to be attached, for example, to an abdominal muscle of a patient. The system includes a safety cap which lies substantially flush against the anchor base to provide no space for movement of the anchors. The safety cap prevents the anchors from deploying prematurely.
433 Citations
25 Claims
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1. An access port assembly comprising:
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an access port having a generally central axis and including a bottom, a sidewall, and a needle penetrable septum; a housing that houses the access port, the housing including an actuator element rotatable about the central axis, the actuator element having a plurality of force protrusions extending radially outwardly from the actuator element; and an attachment mechanism structured to enable the access port to be attached to bodily tissue, the attachment mechanism having a plurality of rotatable anchors movable from an undeployed state to a deployed state, wherein each rotatable anchor has a main body and a separately formed shaft immovably secured to the main body, the shaft defining an axis of rotation of the anchor, wherein the anchors are concealed and contained by the housing when in the undeployed state, wherein the main body includes (1) an inner concave portion that extends from the shaft to a first end, (2) an outer concave portion that extends about the inner concave portion from a second end to a tip portion at a distal end of the main body, and (3) a locking bend portion extending in a curve from the first end of the inner concave portion to the second end of the outer concave portion, wherein the cross section of the main body is constant at least between the shaft and the tip portion, and wherein the main body is a continuously formed member, and wherein the inner concave portion has opposing concave and convex surfaces and wherein the force protrusion portions glide on the concave surface of the inner concave portion when the actuator element is rotated about the central axis to effect rotation of the anchor about the shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An access port assembly comprising:
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an access port having a generally central axis and including a bottom, a sidewall, and a needle penetrable septum; a housing that houses the access port, the housing including an actuator element rotatable about the central axis, the actuator element having a plurality of force protrusions extending radially outwardly from the actuator element; and an attachment mechanism structured to enable the access port to be attached to bodily tissue, the attachment mechanism having a plurality of rotatable anchors movable from an undeployed state to a deployed state, wherein each rotatable anchor has a main body and a separately formed shaft immovably secured to the main body, the shaft defining an axis of rotation of the anchor, wherein the anchors are concealed and contained by the housing when in the undeployed state, wherein the main body includes (1) an inner concave portion that extends from the shaft to a first end, (2) an outer concave portion that extends about the inner concave portion from a second end to a tip portion at a distal end of the main body, and (3) a locking bend portion extending in a curve from the first end of the inner concave portion to the second end of the outer concave portion, wherein the cross section of the main body is constant at least between the shaft and the tip portion, and wherein the main body is a continuously formed member, and wherein the actuator element is constructed for rotation about the central axis to effect rotation of the anchor about the shaft between the undeployed and the deployed states, wherein the force protrusions do not move with respect to the actuator element, and wherein in the undeployed state the force protrusions engage the inner concave portion and in the deployed state the force protrusions engage at least the locking bend portion. - View Dependent Claims (14, 15, 16, 17)
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18. An access port assembly comprising:
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an access port having a generally central axis and including a bottom, a sidewall, and a needle penetrable septum; a housing that houses the access port, the housing including an actuator element rotatable about the central axis, the actuator element having a plurality of force protrusions extending radially outwardly from the actuator element; and an attachment mechanism structured to enable the access port to be attached to bodily tissue, the attachment mechanism having a plurality of rotatable anchors movable from an undeployed state to a deployed state, wherein each rotatable anchor has a main body defining a sharp tip portion at a distal end of the main body and a shaft secured relative to the main body, the shaft defining an axis of rotation of the anchor, wherein the sharp tips are concealed and contained by the housing when in the undeployed state, wherein the main body includes (1) an inner concave portion that extends from the shaft to a first end, (2) an outer concave portion that extends about the inner concave portion from a second end to the tip portion, and (3) a curved portion extending in a curve from the first end of the inner concave portion to the second end of the outer concave portion, the outer concave portion being radially outward of the inner concave portion, the cross section of the main body is constant at least between the shaft and the tip portion, and wherein the main body is a continuously formed member, wherein the actuator element is constructed for rotation about the central axis to effect rotation of the anchor about the shaft between the undeployed and the deployed states, wherein as the force protrusions rotate with the actuator element the force protrusions rotate in a single plane that is transverse to the central axis, and wherein in the undeployed state the force protrusions engage the inner concave portion and in the deployed state the force protrusions engage at least the locking bend portion. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification