Apparatus and methods for sealing a vascular puncture
Inventors
Bagaoisan, Celso J. • Duong, Sieu • Co, Fred H. • Domingo, Juan
Assignees
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Publication Number
US-11925337-B2
Publication Date
2024-03-12
Expiration Date
Abstract
Apparatus and methods for sealing a puncture through tissue includes an introducer sheath sized for introduction into a puncture, cartridge sized for insertion into the introducer carrying a sealant, and a locking element for coupling the introducer sheath to the cartridge. When the cartridge is advanced into the introducer sheath, the locking element couples the introducer sheath to the cartridge such that subsequent retraction of the cartridge causes the introducer sheath to retract, thereby deploying the sealant from the cartridge within the puncture beyond the introducer sheath.
Core Innovation
The invention provides an apparatus for sealing a puncture extending through tissue having an introducer sheath therein. The apparatus includes a cartridge sized for insertion through the introducer sheath within the puncture, where the cartridge has a lumen extending between a proximal end and a distal end and a sealant disposed within the lumen. A pusher member disposed within the lumen deploys the sealant distally from the lumen of the cartridge when the cartridge is retracted proximally relative to the pusher member.
The invention further includes a locking element slidably disposed on the cartridge and comprising a sleeve and an extension extending distally therefrom. The extension includes at least one locking feature extending radially outwardly therefrom, where the extension and the at least one locking feature are in a contracted position when the cartridge is inserted into the sleeve but not the extension. The at least one locking feature is selected from flange, catch, and detent, and the locking feature configuration supports the coupling between the cartridge and the introducer-sheath arrangement for puncture sealing.
In a related system, the invention provides an introducer sheath with a lumen and a positioning member that includes a lumen for a sealant. The system includes a locking element carried on the positioning member for coupling the introducer sheath to the positioning member when the positioning member and locking element are advanced into the lumen of the introducer sheath. Subsequent proximal movement of the positioning member causes corresponding proximal movement of the introducer sheath such that the sealant is deployed beyond the distal end of the introducer sheath, while the locking element includes a sleeve and a distally extending extension with radially outward locking features in a contracted position when positioned inside the sleeve.
Claims Coverage
The document includes two independent claims that share a core inventive concept of coupling an introducer sheath arrangement to a cartridge or positioning member carrying sealant using a locking element whose locking features are in a contracted position during insertion and permit sealant deployment upon relative retraction.
Cartridge-based puncture sealing with distally deploying sealant
A cartridge comprising a proximal end, a distal end sized for insertion through the introducer sheath within a puncture extending through the tissue, and a lumen extending between the proximal end and the distal end; a sealant disposed within the lumen of the cartridge; and a pusher member disposed within the lumen of the cartridge for deploying the sealant distally from the lumen of the cartridge when the cartridge is retracted proximally relative to the pusher member.
Sliding locking element with contracted-position radially outward locking features
A locking element slidably disposed on the cartridge and comprising a sleeve and an extension extending distally therefrom, the extension having at least one locking feature extending radially outwardly therefrom, the extension and the at least one locking feature being in a contracted position when the cartridge is inserted into the sleeve but not the extension, wherein the at least one locking feature is selected from the group comprising a flange, a catch, and a detent.
System coupling that deploys sealant beyond introducer sheath using relative proximal movement
A positioning member comprising a proximal end, a distal end sized for insertion into the lumen of the introducer sheath, and a lumen extending between the proximal end of the positioning member and the distal end of the positioning member; a sealant disposed within the positioning member lumen; and a locking element carried on the positioning member for coupling the introducer sheath to the positioning member when the positioning member and the locking element are advanced into the lumen of the introducer sheath such that subsequent proximal movement of the positioning member causes a corresponding proximal movement of the introducer sheath that deploys the sealant beyond the distal end of the introducer sheath.
Locking element with sleeve and distally extending contracted-position locking features
Wherein the locking element comprises a sleeve and an extension extending distally therefrom, the extension having at least one locking feature extending radially outwardly therefrom, the extension and the at least one locking feature being in a contracted position when the positioning member is inserted into the sleeve but not the extension, and wherein the at least one locking feature is selected from the group comprising a flange, a catch, and a detent.
Across the independent claims, the claims center on sealing a puncture through tissue using an introducer sheath coupled to a cartridge or positioning member carrying sealant in a lumen. The locking element includes a sleeve and a distally extending portion with radially outward locking features that are in a contracted position during insertion, enabling controlled deployment of sealant when the cartridge or positioning member is retracted proximally relative to another member.
Stated Advantages
Documented Applications
No documented applications found
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