Low-friction sealing devices
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.
1. A device for vascular access hemostasis, the device comprising:
an enclosure configured to at least partially receive a medical device, the enclosure defining a cavity and having
a first seal portion; and
a second seal portion, the cavity disposed between the first seal portion and the second seal portion;
a barrel in structural communication with the second seal portion;
the second seal portion comprising a septum seal;
the second seal portion defining three or more discrete portions each separated from one another by one or more split lines, the discrete portions each comprising a mating surface configured to interface with mating surfaces of other discrete portions, the mating surface comprising a surface topology including a plurality of raised portions and depressions.
2. The device of claim 1 , the first seal portion comprising an inwardly sloped portion, the inwardly sloped portion comprising an outer surface, further comprising a hydrophilic layer disposed on the outer surface.
3. The device of claim 2 , the inwardly sloped portion forming a frustoconical shape.
4. The device of claim 1 , further comprising a hydrophilic layer disposed on the mating surfaces of each discrete portion.
5. The device of claim 1 , the raised portions and depressions comprising regular pattern of peaks and valleys.
6. The device of claim 1 , the peaks and valleys having a pitch of about 0.01 mm to about 1.0 mm.
7. The device of claim 1 , a vertical distance between the top of peaks and the bottom of valleys comprising about 0.01 mm to about 1.0 mm.
8. The device of claim 1 , wherein the one or more splits have a depth sufficient to pass through the barrel and the septum seal, but not through the entire enclosure.
9. The device of claim 1 , further comprising support ribs operably connected to the second seal portion, wherein the support ribs are configured for compressive interfacing with a housing.
10. The device of claim 1 , wherein the first seal portion comprises a hole seal.
11. The device of claim 1 , wherein the first seal portion comprises a ring seal.
12. The device of claim 1 , wherein the second seal portion is configured to be held in compression by a mating housing.
13. The device of claim 1 , wherein the mating surface comprises a portion having the surface topology including the plurality of raised portions and depressions and comprising a portion that is substantially flat.
14. A sealing device comprising:
a device enclosure defining a cavity, wherein the device enclosure is configured to compressively interface with a housing;
a first seal portion in communication with the device enclosure, the first seal portion defining an opening; and
a second seal portion in communication with the device enclosure; and
the second seal portion defining three or more discrete portions separated from one another by a split along a split plane, the discrete portions each comprising a mating surface to interface with mating surfaces of other discrete portions, the mating surface comprising a surface topology including a plurality of raised portions and depressions.
15. The sealing device of claim 14 , the device enclosure comprising a plurality of support ribs in compressive communication with the second seal portion.
16. The sealing device of claim 14 , wherein the support ribs are offset from the split by about 45 degrees.
17. The sealing device of claim 14 , wherein the support ribs are substantially symmetrical relative to the split.
18. A method of making a sealing device comprising:
obtaining an enclosure configured to at least partially receive a medical device, the enclosure defining a cavity and having
a first seal portion; and
a second septum seal portion, the cavity disposed between the first seal portion and the second septum seal portion; and
forming a split in the second seal portion, the split defining three or more discrete portions each comprising a mating surface to interface with mating surfaces of other discrete portions, the mating surface comprising a surface topology including a plurality of raised portions and depressions.