Interventional device assembly with anti-buckling system
Inventors
HITCHCOCK, ROBERT • Totten, Sean • Lau, Lilip • Mar, Craig
Assignees
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Publication Number
US-12605523-B2
Publication Date
2026-04-21
Expiration Date
Abstract
An interventional device assembly includes a first hub positioned along a drive table, the first hub having a proximal end and a distal end, an interventional device coupled to the first hub and extending distally therefrom, and a telescoping tube having a proximal end and a distal end. The proximal end of the telescoping tube is secured within an interior of the first hub between the proximal end of the first hub and the distal end of the first hub. The distal end of the telescoping tube is configured to secure to a second hub positioned along the drive table or a distal attachment coupled to the drive table. At least a portion of the interventional device extends through the telescoping tube.
Core Innovation
The interventional device assembly comprises a first hub positioned along a drive table, an interventional device coupled to the first hub and extending distally, and a telescoping tube secured within the first hub. At least a portion of the interventional device extends through the telescoping tube, whose distal end secures to a second hub or a distal attachment. The telescoping tube includes concentric, telescopically axially extendable and collapsible tube segments, and is contained by the first hub when detached and fully axially collapsed.
The assembly addresses buckling and unsupported free length of the interventional device extending between hubs using tube-segment shims, stops, and caps with device-receiving openings. Disclosed configurations further include a distal retainer with radially outward tabs configured to releasably attach via relative rotation to a proximal hub attachment or a distal attachment, and a flexible anti-buckling tubular attachment comprising circumferential cuts configured to releasably attach to an insertion sheath.
Claims Coverage
The five independent claims cover five inventive features of the interventional device assembly.
Telescoping tube contained by the first hub when collapsed
Claim 1 recites a first hub positioned along a drive table, an interventional device coupled to the first hub, and a telescoping tube secured within the first hub. The distal end of the tube is configured to secure to a second hub or distal attachment, with at least a portion of the interventional device extending through the tube, which is contained by the first hub when detached and fully axially collapsed.
Distal retainer releasably attached to the first hub when collapsed
Claim 5 recites a plurality of concentric, telescopically axially extendable and collapsible tube segments, including an outermost segment attached to a distal retainer. The distal retainer is configured to releasably attach to the second hub or distal attachment, and to the first hub when the tube is detached and fully axially collapsed.
Rotation-based attachment to the second hub
Claim 6 recites a distal retainer comprising a body with radially outward tabs, and a proximal hub attachment with a recess and slots configured to receive the body and tabs, wherein the distal retainer rotates relative to the proximal hub attachment to releasably attach to it.
Rotation-based attachment to the distal attachment
Claim 7 recites a distal retainer comprising a body with radially outward tabs, and a distal attachment with a recess and slots configured to receive the body and tabs, wherein the distal retainer rotates relative to the distal attachment to releasably attach to it.
Flexible anti-buckling tubular attachment for an insertion sheath
Claim 9 recites concentric, telescopically axially extendable and collapsible tube segments with the outermost segment attached to a distal retainer, and an anti-buckling tubular attachment extending distally from the distal retainer configured to releasably attach to an insertion sheath, wherein its tubular body comprises circumferential cuts to provide flexibility.
Together, the independent claims cover a hub-contained telescoping tube assembly, alternative rotatable distal-retainer connection arrangements, and a flexible anti-buckling tubular attachment configured to connect to an insertion sheath.
Stated Advantages
Caps with device-receiving openings reduce the unsupported free length of the interventional device and buckling.
An inner diameter reducing feature in each tube segment is configured to reduce the unsupported free length of the interventional device extending through the telescoping tube.
The telescoping tube supports the interventional device between hubs to reduce unsupported length and buckling.
Circumferential cuts provide the anti-buckling tubular attachment with flexibility.
Reciprocal catheter motion during pressurized flushing substantially removes bubbles in test examples.
Documented Applications
The assembly supports and guides an interventional device, including a catheter, through a telescoping tube secured within a first hub and connectable to a second hub or distal attachment along a drive table.
The flexible anti-buckling tubular attachment provides a releasable connection between the distal retainer and an insertion sheath.
An anti-buckling channel guides and restrains interventional devices.
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