Apparatus and method for sealing a vascular puncture
Inventors
Hundertmark, Ronald R. • Uchida, Andy H. • Fiscella, David L. • Zilversmit, Moshe • Ku, Vincent • Fell, Brandon
Assignees
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Publication Number
US-11272911-B2
Publication Date
2022-03-15
Expiration Date
Abstract
An apparatus for sealing a puncture through a vessel wall including a positioning assembly, a sheath releasably engaged with the positioning assembly, and a support member axially advanceable through the sheath. The positioning assembly includes a positioning element positioned at a distal portion of the positioning assembly and a sealant disposed at a distal portion of the positioning assembly. The sheath guides the sealant and positioning assembly to the puncture in the vessel wall.
Core Innovation
The invention provides an apparatus and methods for sealing an arteriotomy in a vessel by delivering a sealant into a vessel tract adjacent the arteriotomy. The apparatus includes a tubular member that contains a sealant and a support member proximal to the sealant, and an actuator transitions the apparatus to retract the tubular member to at least partially expose the sealant and then advance the support member to tamp the sealant.
A central aspect is a controlled sequence in which the support member becomes operatively coupled to the actuator only upon expiration of a predetermined delay. This structure delays advancement of the support member until after the tubular member is retracted to at least partially expose the sealant, ensuring the tamping sequence follows exposure.
In additional embodiments, the invention provides methods in which an apparatus is positioned relative to an arteriotomy using a positioning assembly with an elongate member and a positioning element at a distal portion of the elongate member. The positioning element is radially expanded, the sealant is deployed, and the positioning element is radially contracted by evacuating fluid through an inflation line, whereupon an element slides proximally within a housing and withdraws the expandable member proximally through the sealant.
Claims Coverage
The document contains two independent method claims. Across the independent claims, the coverage centers on timed, actuator-mediated sealant exposure and tamping, and on expanded-and-contractible positioning elements used to deploy sealant followed by withdrawal through the sealant.
Timed actuator coupling for sealant exposure and tamping
providing an apparatus comprising a tubular member; a sealant disposed inside the tubular member; a support member proximal to the sealant; and an actuator; transitioning the actuator to a first position, thereby retracting the tubular member to at least partially expose the sealant; transitioning the actuator to a second position, thereby advancing the support member to tamp the sealant; wherein the support member becomes operatively coupled to the actuator upon expiration of a predetermined delay such that advancement of the support member is delayed until after the tubular member is retracted to at least partially expose the sealant.
Radially expanding and contracting positioning element to deploy sealant
providing an apparatus for positioning relative to an arteriotomy, the apparatus comprising a positioning assembly comprising an elongate member and a positioning element at a distal portion of the elongate member; a sealant carried on the elongate member proximal to the positioning element; radially expanding the positioning element; deploying the sealant; and radially contracting the positioning element by evacuating fluid therefrom through an inflation line, whereupon a fluid line is opened which causes an element to slide proximally within a housing of the apparatus, thereby withdrawing the expandable member proximally through the sealant.
Claim coverage focuses on delaying operative coupling so that the support member tamping follows retraction to expose sealant, and on deploying sealant with a radially expanded distal positioning element followed by radial contraction and withdrawal of the expandable member proximally through the sealant.
Stated Advantages
Documented Applications
Not explicitly described in patent.
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