Fluid jet blood sampling device and methods
First Claim
Patent Images
1. A fluid jet blood sampling system, comprising:
- a control unit for supplying a pressurized fluid at a pressure ranging from about 8,000 psi to about 11,000 psi;
a jet nozzle functionally coupled to said control unit, wherein the control unit and the jet nozzle are configured to eject the pressurized fluid as a fluid jet capable of perforating a patient'"'"'s skin; and
a sealing unit for containing at least one of the fluid from the fluid jet and an initial outflow of blood escaping the patient'"'"'s skin.
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Abstract
A fluid jet blood sampling system and method for obtaining a blood sample from a mammal, utilizes a fluid jet from a disposable jet nozzle to perforate at least the epidermis of the skin and to break at least one blood vessel, thereby allowing a quantity of blood to accumulate on the skin surface of the mammal. A cowling prevents contamination of the local environment with excess fluid, blood, etc. A drying unit may be provided to remove excess fluid, blood, etc. from the skin within the cowling. A sample of blood may be transferred to a test strip, or a collection unit may be used to collect and contain a blood sample from the mammal.
310 Citations
52 Claims
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1. A fluid jet blood sampling system, comprising:
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a control unit for supplying a pressurized fluid at a pressure ranging from about 8,000 psi to about 11,000 psi; a jet nozzle functionally coupled to said control unit, wherein the control unit and the jet nozzle are configured to eject the pressurized fluid as a fluid jet capable of perforating a patient'"'"'s skin; and a sealing unit for containing at least one of the fluid from the fluid jet and an initial outflow of blood escaping the patient'"'"'s skin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A blood sampling system, comprising:
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a jet nozzle capable of emitting a fluid as a fluid jet, said fluid jet capable of perforating at least the epidermis of the skin of a patient at a locus such that a quantity of blood may flow from the skin of said patient at said locus; a cowling surrounding said jet nozzle; a collection unit for collecting a sample of said quantity of blood; a trap unit for trapping unwanted materials; and a drying unit for removing the unwanted materials from the trap unit. - View Dependent Claims (18, 19)
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20. A method for making a fluid jet blood sampling system, the method comprising the steps of:
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providing a pressure supply unit in a handpiece, wherein the pressure supply unit is configured to supply fluid at a pressure ranging from about 8,000 psi to about 11,000 psi; functionally coupling the pressure supply unit to a fluid jet nozzle unit, wherein the pressure supply unit and the fluid jet nozzle unit are configured to output a fluid jet; and attaching a cowling for trapping unwanted materials to the handpiece. - View Dependent Claims (21, 22, 23)
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24. A fluid jet system for obtaining a blood sample, comprising:
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a control unit for supplying a pressurized fluid; an integrated disposable jet nozzle/cowling functionally coupled to said control unit, wherein the jet nozzle/cowling is molded as a single piece of plastic, and wherein said integrated jet nozzle/cowling comprises; a jet nozzle for emitting a fluid jet, and a sealing ring, and a drying unit comprising a channel located between said sealing ring and said jet nozzle. - View Dependent Claims (25, 26, 27, 28)
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29. An integrated jet nozzle/cowling, comprising:
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a jet nozzle having a jet nozzle distal end; a channel unit; and a sealing ring, wherein said integrated jet nozzle/cowling comprises a single piece of molded plastic. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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36. A method for obtaining a blood sample from beneath a surface of a patient'"'"'s skin, comprising the steps of:
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providing a fluid jet blood sampling system including a control unit and an integrated jet nozzle/cowling, the integrated jet nozzle/cowling having a sealing ring and a jet nozzle for providing a fluid jet capable of forming a hole in skin; placing the sealing ring on the skin surface; by means of the fluid jet, forming a hole in the patient'"'"'s skin; allowing at least one drop of blood to accumulate on a surface of the patient'"'"'s skin; and collecting a sample of the at least one drop of blood. - View Dependent Claims (37, 38, 39, 40, 41)
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42. A method for obtaining a blood sample from a patient, comprising the steps of:
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aiming a jet nozzle of a fluid jet unit at a locus on the skin of the patient; propelling a fluid jet at the locus with the jet nozzle; perforating the skin of the patient at the locus with the fluid jet; breaking at least one blood vessel beneath the perforated skin at the locus by means of the fluid jet; and allowing a first quantity of blood to accumulate at the locus. - View Dependent Claims (43)
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44. The method of 42, further comprising the steps of:
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removing the fluid and the first quantity of blood from the locus; allowing a second quantity of blood to accumulate at the locus; and collecting a sample of the second quantity of blood.
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45. A method for collecting a blood sample from a patient, comprising the steps of:
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propelling a fluid jet at a locus on a skin of the patient whence the blood sample is to be removed, wherein the fluid jet causes perforation of the skin at the locus on the skin of the patient and wherein at least one blood vessel located beneath the perforation of the skin is opened to permit a quantity of blood to accumulate at the locus on the skin; and thereafter, collecting a sample of the quantity of blood. - View Dependent Claims (46, 47, 48, 49)
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50. A method for assembling a fluid jet blood sampling system, comprising the steps of:
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providing a fluid unit configured to eject a short duration fluid jet, wherein the fluid jet unit comprises a handpiece; and attaching an integrated jet nozzle/cowling to the handpiece of the fluid jet unit, wherein the jet nozzle/cowling comprises a single piece of molded plastic. - View Dependent Claims (51, 52)
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Specification