GOOGLE files patent for a BLOOD sucking watch

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Original patent claim: http://appft1.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PG01&p=1&u=/netahtml/PTO/srchnum.html&r=1&f=G&l=50&s1=20150342509.PGNR.

Patent support images: http://pdfaiw.uspto.gov/.aiw?Docid=20150342509&homeurl=http%3A%2F%2Fappft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO1%2526Sect2%3DHITOFF%2526d%3DPG01%2526p%3D1%2526u%3D%2Fnetahtml%2FPTO%2Fsrchnum.html%2526r%3D1%2526f%3DG%2526l%3D50%2526s1%3D20150342509.PGNR.%2526OS%3D%2526RS%3D&PageNum=&Rtype=&SectionNum=&idkey=9B7DA283939D

A system for needle-free drawing of blood is disclosed. A device can include an evacuated negative-pressure barrel with a membrane sealing an aperture at a distal end, and a housing affixed to a proximal end. An accelerator barrel can be positioned within the negative-pressure barrel and fixed to the housing, with an open proximal end in a chamber in the housing, and an open distal end aligned with the aperture. The chamber can be filled with pressurized gas, and a trigger valve can hydrostatically separate the chamber from the open proximal end of the accelerator barrel. A micro-particle positioned within the accelerator barrel can be accelerated to high speed by an abrupt surge of gas by releasing the trigger valve. The micro-particle can attain enough momentum to pierce the aperture membrane and penetrate adjacent dermal tissue. A resulting micro-emergence of blood can be drawn into the negative pressure barrel.

1. A device comprising: an evacuated negative-pressure barrel with an aperture membrane sealing an aperture at a distal end of the evacuated negative-pressure barrel, and a housing affixed to, and sealing, a proximal end of the evacuated negative-pressure barrel; an accelerator barrel positioned lengthwise within the evacuated negative-pressure barrel with an open proximal end fixed to the housing and opening into a chamber within the housing, and having an open distal end proximate to, and aligned with, the aperture; a high-pressure gas source configured for filling the chamber with pressurized gas; a trigger valve situated between, and forming a hydrostatic boundary between, the chamber and the open proximal end of the accelerator barrel; a micro-particle positioned within the accelerator barrel at a launch point proximate to the trigger valve; and a trigger-valve release actuator configured for abruptly opening of the trigger valve to abruptly release the pressurized gas from the chamber and into the open proximal end of the accelerator barrel, wherein, the abruptly released pressurized gas is configured to accelerate the micro-particle from the launch point to the open distal end of the accelerator barrel and through the aperture with sufficient momentum to pierce through the aperture membrane and penetrate a sufficient depth of dermal tissue proximate to the distal end of the evacuated negative-pressure barrel to induce a micro-emergence of blood at the dermal tissue surface, and wherein, residual negative pressure within the evacuated negative-pressure barrel is configured to draw at least a portion of blood from the micro-emergence into the evacuated negative-pressure barrel through the pierced aperture membrane.

2. The device of claim 1, wherein the device is configured to be one of a hand-held device or a wearable device.

3. The device of claim 1, wherein the negative pressure barrel and the accelerator barrel are both curved along a co-linear, lengthwise direction.

4. The device of claim 1, wherein the high-pressure gas source is selected from a list consisting of a container of compressed gas, a chemically-reactive gas pressure generator apparatus, an electro-chemical gas pressure generator apparatus, and a mechanical pressure generator.

5. The device of claim 1, wherein the accelerator barrel comprises an inner cylindrical channel having a constant interior cross-sectional shape between the launch point and the open distal end, and wherein the micro-particle has an exterior cross-sectional shape configured to be a flush fit to the constant interior cross-sectional shape of channel and at the same time not impede free longitudinal motion of the micro-particle through the channel.

6. The device of claim 5, wherein the interior cross-sectional shape of the inner cylindrical channel is circular and the exterior cross-sectional shape of the micro-particle is substantially circular.

7. The device of claim 5, wherein the inner cylindrical channel comprises a nozzle segment situated between the launch point and the trigger valve, the nozzle segment being configured to cause the abruptly released pressurized gas entering from the chamber to exit the nozzle segment toward the micro-particle as a supersonic flow.

8. The device of claim 5, wherein the inner cylindrical channel comprises a taper segment situated between the launch point and the trigger valve, the taper segment forming a backstop configured to prevent motion of the micro-particle from the launch point toward the trigger valve.

9. The device of claim 5, wherein the trigger valve comprises a trigger barrier configured to form a hydrostatic seal between the chamber and the open proximal end of the accelerator barrel, and wherein the trigger-valve release actuator comprises a rupture actuator configured for abruptly rupturing the trigger barrier to abruptly break the hydrostatic seal.

10. The device of claim 1, further comprising a reservoir at the distal end of the negative-pressure barrel configured for collecting and holding the at least a portion of blood drawn.

11. The device of claim 6, wherein the inner cylindrical channel has an inner diameter in a range from 10 .mu.m to 250 .mu.m, and wherein the substantially circular cross-sectional shape of the micro-particle is circumscribed by a circle having a diameter in a range from 10 .mu.m to 250 .mu.m.

12. The device of claim 1, wherein the micro-particle comprises an agglomeration of nanoparticles bound together with a biodegradable matrix.

13. The device of claim 12, wherein the nanoparticles comprise nano-sized gold particles and the biodegradable matrix comprises polylactic-co-glycolic acid.

14. A device comprising: an outer barrel with an aperture at a distal end, and a housing affixed to a proximal end; a hydrophilic absorptive wick in the outer barrel, unobstructively surrounding at least a portion of the aperture; an inner barrel positioned lengthwise within the outer barrel with an open proximal end fixed to the housing and opening into a chamber within the housing, and having an open distal end proximate to, and aligned with, the aperture; a high-pressure gas source configured for filling the chamber with pressurized gas; a trigger valve situated between, and forming a hydrostatic boundary between, the chamber and the open proximal end of the inner barrel; a micro-particle positioned within the inner barrel at a launch point proximate to the trigger valve; and a trigger-valve release actuator configured for abruptly opening of the trigger valve to abruptly release the pressurized gas from the chamber and into the open proximal end of the inner barrel, wherein, the abruptly released pressurized gas is configured to accelerate the micro-particle from the launch point to the open distal end of the inner barrel and through the aperture with sufficient momentum to penetrate a sufficient depth of dermal tissue proximate to the distal end of the outer barrel to induce a micro-emergence of blood at the dermal tissue surface, and wherein, the hydrophilic absorptive wick is configured to draw at least a portion of blood from the micro-emergence into outer barrel through the aperture by capillary action.

15. A device comprising: a negative-pressure barrel having an aperture opening at a distal end and a housing affixed to a proximal end; an accelerator barrel positioned lengthwise within the negative-pressure barrel with an open proximal end fixed to the housing and opening into a chamber within the housing, and having an open distal end proximate to, and aligned with, the aperture; a high-pressure gas source configured for filling the chamber with pressurized gas; a trigger valve situated between the chamber and the open proximal end of the accelerator barrel, the trigger valve having a closed operational state in which the trigger valve is closed so as to form a hydrostatic boundary between the chamber and the open proximal end of the accelerator barrel, and an open operational state in which the trigger valve is opened so as to remove the hydrostatic boundary; an arming actuator configured for setting the device in an armed operational state in which (i) the trigger valve is set in the closed operational state, (ii) the chamber is filled with pressurized gas, (iii) a micro-particle is positioned within the accelerator barrel at a launch point proximate to the trigger valve, (iv) a negative-pressure vacuum is created within the negative-pressure barrel and within the accelerator barrel between the open distal end and the closed trigger valve, and (v) an aperture membrane is configured to seal the aperture and maintain the negative-pressure vacuum; and a trigger-valve release actuator configured for causing the trigger valve to abruptly transition from the closed operational state to the open operational state, thereby abruptly releasing the pressurized gas from the chamber into the open proximal end of the accelerator barrel, wherein, the abruptly released pressurized gas is configured to accelerate the micro-particle from the launch point to the open distal end of the accelerator barrel and through the aperture with sufficient momentum to pierce through the aperture membrane and penetrate a sufficient depth of dermal tissue proximate to the distal end of the negative-pressure barrel to induce a micro-emergence of blood at the dermal tissue surface, and wherein, the negative-pressure vacuum within the negative-pressure barrel is configured to draw at least a portion of blood from the micro-emergence into the negative-pressure barrel through the pierced aperture membrane.

16. The device of claim 15, wherein the high-pressure gas source is selected from a list consisting of a container of compressed gas, a chemically-reactive gas pressure generator apparatus, an electro-chemical gas pressure generator apparatus, and a mechanical pressure generator.

17. The device of claim 15, wherein the accelerator barrel comprises an inner cylindrical channel having a constant interior cross-sectional shape between the launch point and the open distal end, and wherein the micro-particle has an exterior cross-sectional shape configured to be a flush fit to the constant interior cross-sectional shape of channel and at the same time not impede free longitudinal motion of the micro-particle through the channel.

18. The device of claim 17, wherein the interior cross-sectional shape of the inner cylindrical channel is circular and the exterior cross-sectional shape of the micro-particle is substantially circular.

19. The device of claim 17, wherein the inner cylindrical channel comprises a nozzle segment situated between the launch point and the trigger valve, the nozzle segment being configured to cause the abruptly released pressurized gas entering from the chamber to exit the nozzle segment toward the micro-particle as a supersonic flow.

20. The device of claim 17, wherein the inner cylindrical channel comprises a taper segment situated between the launch point and the trigger valve, the taper segment forming a backstop configured to prevent motion of the micro-particle from the launch point toward the trigger valve.

21. The device of claim 17, wherein the trigger valve comprises a trigger barrier configured to form a hydrostatic seal between the chamber and the open proximal end of the accelerator barrel when the trigger valve is set in the closed operational state, and wherein the trigger-valve release actuator comprises a rupture actuator configured for abruptly rupturing the trigger barrier to abruptly break the hydrostatic seal.

22. The device of claim 21, wherein the arming actuator is further configured for reconfiguring a replacement trigger barrier to set the trigger valve in the closed operational state for each of two or more separate instances of the arming actuator setting the device in the armed operational state.

23. The device of claim 15, further comprising a metering valve configured for controlling separate refill allocations of pressurized gas from the high-pressure gas source to fill the chamber for each of two or more separate instances of the arming actuator setting the device in the armed operational state.

24. The device of claim 15, wherein the dermal tissue surface serves as the aperture membrane by placement of the aperture in direct contact against the dermal tissue surface.

25. The device of claim 15, further comprising a reservoir at the distal end of the negative-pressure barrel configured for collecting and holding the at least a portion of blood drawn.

26. The device of claim 14, wherein the micro-particle comprises a micro-droplet of liquid.

27. The device of claim 14, wherein the micro-particle comprises a medically therapeutic substance.

28. A method comprising: evacuating a negative-pressure barrel of a device, the evacuated negative-pressure barrel having an aperture membrane sealing an aperture at a distal end of the negative-pressure barrel, and a housing affixed to, and sealing, a proximal end of the negative-pressure barrel, wherein the negative-pressure barrel contains an accelerator barrel positioned lengthwise within the negative-pressure barrel with an open proximal end fixed to the housing and opening into a chamber within the housing, and having an open distal end proximate to, and aligned with, the aperture; arming a trigger valve situated between the chamber and the open proximal end of the accelerator barrel, the armed trigger valve forming a hydrostatic boundary between chamber and the open proximal end of the accelerator barrel; configuring a micro-particle within the accelerator barrel at a launch point proximate to the trigger valve; by abruptly releasing the armed trigger valve, abruptly releasing pressurized gas from the chamber and into the open proximal end of the accelerator, wherein, the abruptly released pressurized gas is configured to accelerate the micro-particle from the launch point to the open distal end of the accelerator barrel and through the aperture with sufficient momentum to pierce through the aperture membrane and penetrate a sufficient depth of dermal tissue proximate to the distal end of the negative-pressure barrel to induce a micro-emergence of blood at the dermal tissue surface; and drawing at least a portion of blood from the micro-emergence into the evacuated negative-pressure barrel through the pierced aperture.

29. The method of claim 28, further comprising, subsequent to drawing the at least a portion of blood: re-evacuating the negative-pressure barrel of a device; re-arming the trigger valve; re-configuring a replacement micro-particle within the accelerator barrel at the launch point; abruptly re-releasing the re-armed trigger valve; and drawing at least a portion of blood from a subsequent micro-emergence at the dermal tissue surface.

30. A method comprising: configuring a micro-particle at a launch point at a proximal end of an accelerator barrel of a hand-portable hyperspeed micro-particle accelerator device, wherein the accelerator barrel is positioned lengthwise within an outer barrel of the hand-portable hyperspeed micro-particle accelerator device and has an open distal end proximate to, and aligned with, an aperture at a distal end of the outer barrel; arming the hand-portable hyperspeed micro-particle accelerator device for hyperspeed acceleration of the micro-particle; and triggering the armed hand-portable hyperspeed micro-particle accelerator device to cause the micro-particle to accelerate from the launch point to the open distal end of the accelerator barrel and through the aperture with sufficient momentum to pierce dermal tissue proximate to the distal end of the outer barrel with no larger than a dermal-pore-sized surface puncture.