Apparatus and methods for sealing a vascular puncture
Inventors
Bagaoisan, Celso J. • Domingo, Juan • Duong, Sieu
Assignees
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Publication Number
US-10806438-B2
Publication Date
2020-10-20
Expiration Date
Abstract
An apparatus for sealing a puncture includes a cartridge, a pusher member, a sealant, and a tamping device on a proximal end of the cartridge. During use, the cartridge, sealant, and pusher member are advanced over a positioning member and into the puncture by advancing a cartridge hub carrying the tamping device. When further distal advancement of the cartridge is limited, the cartridge hub is further advanced, activating the tamping device, and causing the pusher member to advance relative to the sealant to compress the sealant within the puncture.
Core Innovation
The invention provides an apparatus and method for sealing a vascular puncture by tamping a sealant. A distal end of the apparatus is positioned in a vessel, where the apparatus includes a positioning member and a catheter hub that is substantially fixed relative to the positioning member. A cartridge having an outer tubular member is axially moveable relative to the catheter hub, and the cartridge includes a sealant disposed in the cartridge and a pusher member disposed in the cartridge.
The apparatus includes a tamping device that receives a proximal end of the pusher member, and the tamping device is prevented from moving distally by a latch having an arm biased in a radially inward direction. The latch is in a first position that prevents distal movement of the tamping device, and moving the cartridge proximally relative to the sealant and catheter hub moves the latch to a second position. This moves the arm in a radially outward direction and disengages the arm from the latch, thereby allowing distal movement of the tamping device and the pusher member.
After the latch is disengaged, the tamping device and the pusher member are moved distally to compress the sealant. The disclosed embodiments include a positioning or occlusion member advanced into the vessel and expanded to contact a vessel wall, and the sealant is compressed within the puncture between the pusher and the expanded positioning element to achieve hemostasis.
Claims Coverage
The partial content provides two independent method claims. Both claims cover a latch-controlled transition that enables distal tamping of a sealant to compress the sealant within a vessel puncture using a cartridge that moves proximally relative to a substantially fixed catheter hub, with the tamping device and pusher member subsequently moving distally.
Latch-controlled transition from preventing to allowing distal tamping
The method includes positioning a distal end of an apparatus in a vessel, the apparatus comprising a positioning member, a catheter hub substantially fixed relative to the positioning member, a cartridge with an outer tubular member axially moveable relative to the catheter hub, a sealant disposed in the cartridge, a pusher member disposed in the cartridge, and a tamping device receiving a proximal end of the pusher member. The tamping device is initially prevented from moving distally by a latch comprising an arm biased in a radially inward direction in a first position that prevents distal movement. Moving the cartridge proximally moves the latch from the first position to a second position, moves the arm radially outward, disengages the arm from the latch to allow distal movement, and then moving the tamping device and the pusher member distally to compress the sealant.
Proximal cartridge movement disengages a radially biased latch to enable distal compression
The method includes positioning a distal end of an apparatus in a vessel with a positioning member, a catheter hub substantially fixed relative to the positioning member, and a cartridge having an outer tubular member axially moveable relative to the catheter hub. The cartridge contains a sealant and a pusher member, and the tamping device receives a proximal end of the pusher member and is initially prevented from moving distally by a latch comprising an arm biased in a radially inward direction in a first position that prevents distal movement of the tamping device. Moving the cartridge proximally relative to the sealant and catheter hub moves the latch from the first position to a second position, moves the arm radially outward, disengages the arm from the latch to allow the tamping device to move distally, and then moving the tamping device and the pusher member distally to compress the sealant.
Both independent claims focus on a radially biased latch that prevents distal tamping until the cartridge is moved proximally relative to a catheter hub. Once the latch disengages, the tamping device and pusher member move distally to compress the sealant.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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