Syringe with PECVD lubricity layer
Methods for processing a vessel, for example to provide a gas barrier or lubricity, are disclosed. First and second PECVD or other vessel processing stations or devices and a vessel holder comprising a vessel port are provided. An opening of the vessel can be seated on the vessel port. The interior surface of the seated vessel can be processed via the vessel port by the first and second processing stations or devices. Vessel barrier and lubricity coatings and coated vessels, for example syringes and medical sample collection tubes are disclosed. A vessel processing system is also disclosed.
1. A syringe comprising: a barrel and a plunger, the barrel having an inner surface defining a lumen and the plunger having a side surface engaging the barrel inner surface, wherein the inner surface is a substrate comprising a polymer, coated with a barrier coating of SiO x , in which x is from about 1.5 to about 2.9, and a lubricity layer applied to the barrier coating of SiO x and configured to provide a lower plunger sliding force or breakout force than the uncoated substrate, the lubricity layer having the following atomic ratios, measured by X-ray photoelectron spectroscopy (XPS),
Si w O x C y ,
where w is 1, x in this formula is from about 0.5 to 2.4, and y is from about 0.6 to about 3; the lubricity layer having a thickness by transmission electron microscopy (TEM) between 10 and 1000 nm; the lubricity layer deposited by plasma enhanced chemical vapor deposition (PECVD) under conditions effective to form a coating from a precursor comprising a linear siloxane, a monocyclic siloxane, or a combination of any two or more of these precursors.
2. The syringe of claim 1 , in which the precursor comprises octamethylcyclotetrasiloxane (OMCTS).
3. The syringe of claim 1 , in which the polymer comprises an olefin polymer.
4. The syringe of claim 1 , in which the lubricity layer is configured to provide a lower plunger sliding force than the uncoated substrate.
5. The syringe of claim 1 , in which the lubricity layer reduces the syringe plunger sliding force moving through the syringe barrel at least 45 percent relative to the uncoated syringe barrel.
6. The syringe of claim 5 , in which the plunger sliding force is measured in a Genesis Packaging Automated Syringe Force Tester at a speed of 100 mm/minute, Range=10,000.
7. The syringe of claim 1 , in which the lubricity layer reduces the syringe plunger sliding force moving through the syringe barrel at least 60 percent relative to the uncoated syringe barrel.
8. The syringe of claim 1 , in which the lubricity layer is configured to provide a lower plunger breakout force than the uncoated substrate.
9. The syringe of claim 1 , in which the lubricity layer reduces the syringe plunger breakout force at least 45 percent relative to the uncoated syringe barrel.
10. The syringe of claim 9 , in which the syringe plunger breakout force is measured in a Genesis Packaging Automated Syringe Force Tester at a speed of 100 mm/minute, Range=10,000.
11. The syringe of claim 1 , in which the lubricity layer reduces the syringe plunger breakout force at least 60 percent relative to the uncoated syringe barrel.
12. The syringe of claim 1 , in which the lubricity layer has a density between 1.25 and 1.65 g/cm 3 as determined by X-ray reflectivity (XRR).
13. The syringe of claim 1 , in which the lubricity layer has an outgas component as determined by gas chromatography/mass spectrometry substantially free of trimethylsilanol.
14. The syringe of claim 1 , in which the lubricity layer has an outgas component as determined by gas chromatography/mass spectrometry having at least 10 ng/test of oligomers containing repeating -(Me)2SiO— moieties, as determined by gas chromatography/mass spectrometry using the following test conditions: GC Column: 30 m×0.25 mm DB-5MS (J&W Scientific), 0.25 μm film thickness Flow rate: 1.0 ml/min, constant flow mode Detector: Mass Selective Detector (MSD) Injection Mode: Split injection (10:1 split ratio) Outgassing Conditions: 1 W (37 mm) Chamber, purge for three hour at 85° C., flow 60 ml/min Oven temperature: 40° C. (5 min.) to 300° C. @10° C./min.; hold for 5 min, at 300° C.
15. The syringe of claim 1 , in which the lubricity layer has atomic concentrations from 25 to 45% carbon, 25 to 65% silicon, and 10 to 35% oxygen.
16. The syringe of claim 1 , in which the lumen has a void volume of from 0.5 to 50 mL.
17. The syringe of claim 1 , in which the lubricity layer has a lower wetting tension than the uncoated surface.
18. The syringe of claim 1 , in which the lubricity layer has a thickness by transmission electron microscopy (TEM) between 10 and 500 nm.
19. The syringe of claim 1 , in which the lubricity layer has atomic concentrations normalized to 100% carbon, oxygen, and silicon, as determined by X-ray photoelectron spectroscopy (XPS), of less than 50% carbon and more than 25% silicon.
20. The syringe of claim 1 , in which at least one intervening layer of another material separates the barrier coating and lubricity layer.
21. The syringe of claim 1 , in which the lubricity layer is between 100 nm and 500 nm thick.
22. The syringe of claim 1 , in which the maximum plunger sliding force of the syringe is between 1.1 lb. (4.9 N) and 2.5 lb. (11.1 N).
23. The syringe of claim 1 , in which the maximum plunger sliding force of the syringe is between 1.1 lb. (4.9 N) and 2 lb. (8.9 N).
24. The syringe of claim 1 , in which the maximum plunger sliding force of the syringe is between 1.1 lb. (4.9 N) and 1.4 lb. (6.2 N).