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Publication Number
US-10758719-B2
Publication Date
2020-09-01
Expiration Date
Abstract
Aspects herein relate to a low-friction septum for providing a leak-resistant seal for use in a vascular access device. In an embodiment, a device for vascular access hemostasis is included having an enclosure defining a cavity and configured to at least partially receive a medical device. The device can include a first seal portion and a second seal portion, the cavity disposed between the first seal portion and the second seal portion. The device can include a barrel in structural communication with the second seal portion, the second seal portion including a septum seal. The second seal portion can define two or more discrete portions, each separated by one or more split lines. The discrete portions can include a mating surface to interface with mating surfaces of other discrete portions. The mating surface can include a surface topology including raised portions and depressions. Other embodiments are also included herein.
Core Innovation
The invention relates to a device for vascular access hemostasis and/or a sealing device that includes an enclosure defining a cavity with a first seal portion and a second seal portion. The second seal portion comprises a septum seal portion and is disposed between the first seal portion and the enclosure cavity. A barrel is provided in structural communication with the second seal portion.
The second seal portion defines two or more discrete portions separated from one another by one or more split lines, and each discrete portion includes a mating surface for interfacing with mating surfaces of other discrete portions. The mating surface includes a surface topology with raised portions and depressions, and the discrete portions separated by split lines are configured to provide a low-friction interface.
The first seal portion includes an inwardly sloped portion with an outer surface, and the first seal portion further comprises a hydrophilic layer disposed on the outer surface. The hydrophilic layer is covalently bonded to the outer surface of the inwardly sloped portion.
The enclosure includes a constriction ring disposed around the barrel, and the constriction ring is disposed between one or more support ribs and a retaining flange. The support ribs are associated with the split-separated second seal portions and the constriction ring arrangement.
Claims Coverage
The partial content includes three independent claims covering a device for vascular access hemostasis, a sealing device configuration, and a method of making the sealing device. Across the independent claims, the main inventive features include the split-separated septum seal discrete portions with mating surfaces having raised and depressed topology, the hydrophilic layer that is covalently bonded on an inwardly sloped first seal portion, and the constriction ring arrangement between support ribs and a retaining flange around the barrel.
Split-separated septum seal discrete portions with mating surface topology
The second seal portion comprises a septum seal where the second seal portion defines two or more discrete portions separated from one another by one or more split lines, each discrete portion comprising a mating surface configured to interface with mating surfaces of other discrete portions, wherein the mating surface comprises a surface topology including raised portions and depressions.
Covalently bonded hydrophilic layer on inwardly sloped first seal portion
The first seal portion comprises an inwardly sloped portion with an outer surface, and the first seal portion further comprises a hydrophilic layer disposed on the outer surface, wherein the hydrophilic layer is covalently bonded to the outer surface of the inwardly sloped portion.
Constriction ring disposed between support ribs and retaining flange around the barrel
A constriction ring disposed around the barrel, the constriction ring disposed between one or more support ribs and a retaining flange.
Barrel in structural communication with the second seal portion
A barrel provided in structural communication with the second seal portion.
Enclosure cavity with first and second seal portions
An enclosure defining a cavity with a first seal portion and a second seal portion, with the second seal portion comprising a septum seal portion disposed between the first seal portion and the enclosure cavity.
Across the independent claims, the claim coverage is centered on a sealing architecture where a septum seal is split into discrete portions with mating surfaces having raised and depressed topology, combined with a covalently bonded hydrophilic layer on an inwardly sloped first seal portion, and supported by a constriction ring arrangement between support ribs and a retaining flange around a barrel.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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