Plasma or serum production and removal of fluids under reduced pressure
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61B-005/00
A61B-005/15
A61M-001/34
A61M-001/36
A61B-005/145
A61B-005/151
A61B-005/154
B01L-003/00
A61B-005/1455
A61B-005/1486
A61B-010/00
G01N-033/18
출원번호
US-0805678
(2015-07-22)
등록번호
US-10188335
(2019-01-29)
발명자
/ 주소
Haghgooie, Ramin
Chickering, III, Donald E.
Davis, Shawn
Michelman, Mark
Bernstein, Howard
Horton, Kristin
출원인 / 주소
Seventh Sense Biosystems, Inc.
대리인 / 주소
Wolf, Greenfield & Sacks, P.C.
인용정보
피인용 횟수 :
0인용 특허 :
313
초록▼
In some embodiments, the present invention generally relates to the separation of blood within a device to form plasma or serum. In some embodiments, the present invention generally relates to the removal of fluids, such as blood, contained within a device. In one aspect, the present invention is ge
In some embodiments, the present invention generally relates to the separation of blood within a device to form plasma or serum. In some embodiments, the present invention generally relates to the removal of fluids, such as blood, contained within a device. In one aspect, the present invention is generally directed to systems and methods for receiving blood from a subject and processing the blood to form plasma or serum. For example, a device may be applied to the skin of a subject to receive blood from the subject and pass the blood through a separation membrane, which separates the blood into plasma and a portion concentrated in blood cells. As another example, blood or plasma may be allowed to clot within the device and serum (the unclotted portion of the blood) may be withdrawn from the device. The device may contain, in some cases, a vacuum source such as a pre-packaged vacuum to facilitate receiving of blood and/or passage of the blood through the separation membrane to produce plasma or serum. In certain embodiments, plasma, serum, or other fluids may be removed from the device by inserting a needle into a portion of the device that has reduced pressure, expelling gas into the device through the needle, then receiving plasma, serum, or other fluids through the needle.
대표청구항▼
1. A device for receiving blood from a subject and processing the blood to form plasma or serum, the device comprising: an inlet for introduction of blood from the subject into the device;a storage chamber for receiving plasma or serum;a membrane that is substantially impermeable to cells, wherein t
1. A device for receiving blood from a subject and processing the blood to form plasma or serum, the device comprising: an inlet for introduction of blood from the subject into the device;a storage chamber for receiving plasma or serum;a membrane that is substantially impermeable to cells, wherein the membrane separates the inlet from the storage chamber and is capable of separating blood passing through to produce a portion enriched in plasma or serum; anda vacuum chamber, separate from the storage chamber, having a pressure less than ambient pressure;wherein the device further comprises a first module and a second module removable from the first module, wherein the second module comprises the storage chamber. 2. The device of claim 1, wherein the storage chamber has a volume of less than about 10 ml. 3. The device of claim 1, wherein at least a portion of the storage chamber is coated with a material that promotes thrombolysis. 4. The device of claim 1, wherein at least a portion of the storage chamber is coated with a polyester. 5. The device of claim 1, wherein the device further contains an anticoagulant. 6. The device of claim 5, wherein the anticoagulant comprises heparin. 7. The device of claim 5, wherein the anticoagulant includes one or more of citrate, thrombin, oxalate, ethylenediaminetetraacetic acid (EDTA), sodium polyanethol sulfonate, or acid citrate dextrose. 8. The device of claim 1, wherein the membrane is a separation membrane. 9. The device of claim 1, wherein the membrane comprises a copolymer. 10. The device of claim 1, wherein the membrane has an average pore diameter of less than about 20 micrometers. 11. The device of claim 1, wherein the inlet is in fluid communication with the membrane by the fluid communication pathway. 12. The device of claim 1, wherein the inlet is in fluid communication with the membrane by a microfluidic channel. 13. The device of claim 1, wherein the vacuum chamber has a pressure, prior to introduction of a bodily fluid from the subject into the device, that is less than about 100 mmHg below ambient pressure. 14. The device of claim 1, further comprising a septum in fluid communication with the storage chamber. 15. The device of claim 14, wherein the septum comprises silicone. 16. The device of claim 1, wherein the device further comprises one or more microneedles positioned to be insertable into the skin of the subject to cause blood to flow to the inlet. 17. The device of claim 16, further comprising an activator that, when activated, fluidly communicates the pressure from the vacuum chamber to the one or more microneedles, wherein prior to activating the activator, the pressure from the vacuum chamber is not in fluid communication with the one or more microneedles. 18. The device of claim 1, further comprising a seal that can be manipulated to control a fluid communication pathway between the vacuum chamber and the storage chamber. 19. The device of claim 1, wherein the device further comprises a second membrane that is gas permeable but is substantially liquid impermeable, separating the storage chamber from the vacuum chamber. 20. The device of claim 1, wherein the device is self-contained. 21. A device for receiving blood from a subject and processing the blood to form plasma or serum, the device comprising: an inlet for introduction of a bodily fluid from the subject into the device;a storage chamber for receiving plasma or serum;a first membrane that is substantially impermeable to cells, wherein the first membrane separates the inlet from the storage chamber and is capable of separating blood passing through to produce a portion enriched in plasma or serum;a vacuum chamber, separate from the storage chamber, having a pressure less than ambient pressure; anda second membrane that is gas permeable but is substantially liquid impermeable, wherein the second membrane separates the storage chamber from the vacuum chamber. 22. The device of claim 21, wherein the device further comprises a first module and a second module removable from the first module, wherein the second module comprises the storage chamber. 23. The device of claim 21, wherein the device further contains an anticoagulant. 24. The device of claim 21, wherein the vacuum chamber has a pressure, prior to introduction of a bodily fluid from the subject into the device, that is less than about 100 mmHg below ambient pressure. 25. The device of claim 21, wherein the storage chamber has a volume of less than about 10 ml. 26. The device of claim 21, wherein the device further comprises one or more microneedles positioned to be insertable into the skin of the subject to cause blood to flow to the inlet. 27. The device of claim 26, further comprising an activator that, when activated, fluidly communicates the pressure from the vacuum chamber to the one or more microneedles, wherein prior to activating the activator, the pressure from the vacuum chamber is not in fluid communication with the one or more microneedles. 28. The device of claim 21, further comprising a seal that can be manipulated to control a fluid communication pathway between the vacuum chamber and the storage chamber.
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