US20130265417A1 - Centrifuge - Google Patents
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- US20130265417A1 US20130265417A1 US13/858,257 US201313858257A US2013265417A1 US 20130265417 A1 US20130265417 A1 US 20130265417A1 US 201313858257 A US201313858257 A US 201313858257A US 2013265417 A1 US2013265417 A1 US 2013265417A1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/487—Physical analysis of biological material of liquid biological material
- G01N33/49—Blood
- G01N33/491—Blood by separating the blood components
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
- A61M1/3693—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits using separation based on different densities of components, e.g. centrifuging
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/02—Centrifuges consisting of a plurality of separate bowls rotating round an axis situated between the bowls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
- B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
- B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/02—Electric motor drives
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Abstract
A centrifuge is provided. The centrifuge includes a power source, the power source configured to generate electrical power from a renewable power source. At least one battery electrically coupled to the power source. A motor is electrically coupled to the at least one battery. A rotor is coupled to the motor. The rotor has a generally cylindrical body and a pair of opposing openings opposite the motor, and a pair of holders each disposed in one of the pair of opposing openings, each of the holders having an opening on one end sized to receive a capillary tube.
Description
- The present application is a nonprovisional application of U.S. Provisional Application Ser. No. 61/621,691 filed on Apr. 9, 2012, the contents of which is incorporated by reference herein in its entirety.
- The subject matter disclosed herein relates to a centrifuge and in particular to a portable centrifuge for determining a patient's hematocrit.
- Blood can be fractionated, and the different fractions of the blood can be used to diagnose a patient to determine their medical needs. Under the influence of gravity or centrifugal force, blood spontaneously sediments into three layers. At equilibrium, the top low-density layer is a straw-colored clear fluid called plasma. Plasma is a water solution of salts, metabolites, peptides, and many proteins ranging from small (insulin) to very large (complement components).
- The bottom, high-density layer is a deep red viscous fluid composed of red blood cells (erythrocytes) specialized for oxygen transport. The relative volume of whole blood that consists of erythrocytes is called the hematocrit, and in normal human beings this can range from about 37% to about 52% of whole blood.
- The intermediate layer is the smallest, appearing as a thin white band above the erythrocyte layer and below the plasma layer; this is called the buffy coat.
- It is often desirable to check the patient's hematocrit to determine if the amount of red blood cells in the patient's blood is within normal ranges, or if it is low (anemic) or high (polycythemic). It may be desired to perform this analysis frequently to check the effectiveness of treatments or to determine a change in the patient's condition. The processing of blood typically requires significant capital investment in centrifugation equipment, lab space and skilled personnel to process the samples. It should be appreciated that it is often difficult to perform this analysis in areas where the local environment or infrastructure does not provide the economic resources for equipment or the skilled personnel needed to perform the analysis.
- Accordingly, while existing centrifuges are suitable for their intended purposes the need for improvement remains, particularly in providing a centrifuge and system that can be used to check a patient's hematocrit in remote or low resource areas.
- According to one aspect of the invention, a centrifuge is provided. The centrifuge includes a power source, the power source configured to generate electrical power from a renewable power source. At least one battery is electrically coupled to the power source. A motor is electrically coupled to at least one battery. A rotor is coupled to the motor, the rotor having a generally cylindrical body and a pair of opposing openings opposite the motor. A pair of holders are each disposed in one of the pair of opposing openings, each of the holders having an opening on one end sized to receive a capillary tube.
- According to another aspect of the invention, a diagnosis card comprising a base member is provided. The base member includes a base line indicia. A lower normal line indicia is provided having a first starting point spaced apart from the base line, the lower normal line extending on an angle relative to the base line. An upper normal line indicia is provided having a second starting point coincident with the first starting point, the upper normal line extending on an angle relative to the lower normal line. A 100% level line indicia is provided having a third starting point spaced apart from the first starting point, the 100% level line extending on an angle relative to the upper normal line.
- According to yet another aspect of the invention, a method of evaluating a patient's hematocrit is provided. The method includes separating a sample of blood in a capillary tube into a red blood cell portion and a plasma portion, the capillary tube having a bottom end. A diagnosis card is provided having a base line indicia. a lower normal line indicia, an upper normal line indicia and a 100% level line. The lower normal line indicia includes a first starting point spaced apart from the base line, the lower normal line extending on an angle relative to the base line. The upper normal line indicia includes a second starting point coincident with the first starting point, the upper normal line extending on an angle relative to the lower normal line. The 100% level line indicia having a third starting point spaced apart from the first starting point, the 100% level line extending on an angle relative to the upper normal line. The capillary tube is placed against the diagnosis card with the bottom end placed adjacent the base line.
- According to yet another aspect of the invention, a system for evaluating a patient's hematocrit in a low resource area is provided. The system includes a centrifuge. The centrifuge includes a solar panel, at least one battery electrically coupled to the solar panel, a motor electrically coupled to at least one battery, and a rotor coupled to the motor. The rotor has a generally cylindrical body and a pair of opposing openings opposite the motor, and a pair of holders each disposed in one of the pair of opposing openings, each of the holders having an opening on one end sized to receive a capillary tube. The system further includes a diagnosis device having a graphical screen. The diagnosis device being configured to display a base line indicia, a lower normal line indicia, an upper normal line indicia, and a 100% level line indicia. The lower normal line indicia has a first starting point spaced apart from the base line, the lower normal line extending on an angle relative to the base line. The upper normal line indicia has a second starting point coincident with the first starting point, the upper normal line extending on an angle relative to the lower normal line. The 100% level line indicia has a third starting point spaced apart from the first starting point, the 100% level line extending on an angle relative to the upper normal line.
- These and other advantages and features will become more apparent from the following description taken in conjunction with the drawings.
- The subject matter, which is regarded as the invention, is particularly pointed out and distinctly claimed in the claims at the conclusion of the specification. The foregoing and other features, and advantages of the invention are apparent from the following detailed description taken in conjunction with the accompanying drawings in which:
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FIG. 1 is a perspective view of a centrifuge in accordance with an embodiment of the invention; -
FIG. 2 is another perspective view of the centrifuge ofFIG. 1 ; -
FIG. 3 is another perspective view of the centrifuge ofFIG. 1 with a portion of the housing removed; -
FIGS. 4-7 are views of a rotor for use with the centrifuge ofFIG. 1 ; -
FIGS. 8A-8C are views of the rotor body ofFIG. 4 ; -
FIG. 9 is a side view of an exemplary capillary tube for use in the rotor ofFIG. 4 ; -
FIG. 10 is a hematocrit card for use with the capillary tube ofFIG. 9 ; -
FIG. 11 is a top view of a centrifuge rotor having microfluidic channels; and -
FIG. 12 is a perspective view of a manually operated centrifuge for use with the rotor ofFIG. 11 . - The detailed description explains embodiments of the invention, together with advantages and features, by way of example with reference to the drawings.
- The monitoring of human hematocrit is desirable to diagnose a variety of diseases and disorders. In remote or low resource areas this may be difficult due to the lack of facilities or economic resources to afford the capital equipment typically used for analyzing a patient's hematocrit. Still further issues may arise in these areas in consistent collection of a patient's sample. Embodiments of the present disclosure provide a portable centrifuge that is capable of processing hematocrit operating under battery power or with a renewable energy source. Embodiments of the present disclosure provide advantages in the rapid processing of small quantities of hematocrit. Embodiments of the present disclosure provide advantages in the assessment of a patient's hematocrit for a range of sample volumes. Still further advantages of the present disclosure provide advantages in assessing a patient's hematocrit using a rotor with microfluidic channels and a manually operated centrifuge.
- Referring now to
FIGS. 1-3 , acentrifuge 20 is shown that is configured to operate in remote areas or low resource areas. As used herein, the term “low resource area” refers to a geographic region or area lacking consistent or reliable access to electricity and medical laboratory facilities. A low resource area may also include a trauma surgery amphitheater or a military combat theater. Thecentrifuge 20 has abase 22 and acover 24. Thecover 24 is rotationally coupled to the base 22 to allow thecover 24 to move from a closed to an open position. In the exemplary embodiment, thebase 22 and cover 24 are made from a suitably light weight material such as polystyrene or styrene butadiene methyl methacrylate for example. In one embodiment, thecentrifuge 20 may include an interlock switch (not shown) that prevents the operation of thecentrifuge 20 when thecover 24 is in the open position. - It should be appreciated that while embodiments herein reference the separation of blood with the
centrifuge 20, this is for exemplary purposes and the claimed invention should not be so limited. In other embodiments, thecentrifuge 20 may be used to separate other fluids, such as but not limited to fluids having fluid or non-fluid components having different densities, tears, urine, stool, saliva, sweat, or water sources for example. - The
base 22 defines ahollow area 26 arranged beneath acover 28. Thecover 28 includes an opening that allows a shaft on amotor 30 to extend into aspace 34 within thecover 24. Themotor 30 is mounted to thebase 22, such as with a motor mount 42 for example. Themotor mount 40 may be any suitable mounting arrangement that supports themotor 30 and reduces the transfer of vibrations from themotor 30 into thebase 22. In the exemplary embodiment, themotor 30 is a 1.5-3V, 12,500 rpm direct current motor, such as a Model ST130-22770-38 motor manufactured by Jency Motor for example. As will be discussed in more detail below, arotor 32 is coupled to the shaft and rotates within thespace 34. In one embodiment, thecover 24 is reinforced act as a containment vessel. In yet another embodiment, thecover 24, the base 22 or thecover 28 include one or more seals arrangements, such as a gasket for example, that seals thespace 34 to prevent the escaping of aerosols from thecentrifuge 20 in the event a sample breaks during operation. - Disposed within the
hollow area 26 may be one or more components, such as abattery 36 and acontroller 38. Thebattery 36 is electrically connected to asolar panel 40. In one embodiment, thesolar panel 40 is mounted to thecover 28 opposite thespace 34. In the exemplary embodiment, thesolar panel 40 is comprised of five 1000 mA, 0.55W solar panels, such as a P-Maxx Series solar cell manufactured by Silicon Solar Inc for example. In one embodiment, each of the individualsolar panels 40 are 0.938 inches (23.8 millimeters) wide, 6.125 inches (155.6 millimeters) long and 0.050 inches (1.27 millimeters) thick. - It should be appreciated that while a
single battery 36 is shown, this is for exemplary purposes and the claimed invention should not be so limited. The disclosedcentrifuge 20 may have multiple batteries arranged in series or in parallel. In one embodiment, thecentrifuge 20 has twobatteries 36 that are arranged in parallel. In this embodiment, each of the batteries may support operation of the centrifuge individually. This allows thecentrifuge 20 to be operated by afirst battery 36 while asecond battery 36 is being charged by thesolar panel 40. In yet another embodiment, the centrifuge may be operated directly by the power generated fromsolar panel 40. - It should be further appreciated that while the
controller 38 is shown as a single component, the control and operation of thecentrifuge 20 may be performed by a plurality of individual components, each providing one or more functions, such as but not limited to a motor controller, and a battery charging circuit for example. - Referring now to
FIGS. 4-8 , thecentrifuge rotor 32 is shown that holds hematocrit samples during operation. Therotor 32 includes abody 44 and a pair of opposingholders 46. Thebody 44 has a generally cylindrical shape. On afirst end 48 is a threadedopening 50. Theopening 50 is sized and shaped to couple with a shaft on themotor 30. In the exemplary embodiment, theopening 50 has a diameter of 0.08 inches (2.032 millimeters). It should be appreciated that themotor 30 and thebody 44 may include additional features (not shown) that keep therotor 44 centered on themotor 30 shaft, such as matching conical surfaces for example, and also include features that keep therotor 44 from decoupling under deceleration, such as a pin extending perpendicular to the shaft that is disposed within a slot on theend 48. - Opposite the
end 48 is asecond end 52. Thesecond end 52 includes a pair of opposingopenings 54. Each ofopenings 54 is formed on an angle and extend through thesidewall 56 of thebody 44. In the exemplary embodiment, the openings are formed on a 65 degree angle from a horizontal plane. In the exemplary embodiment, theopenings 54 are cylindrical openings. In other embodiments, theopenings 54 may have features, such as a step for example, that cooperates with a corresponding feature on theholders 46 to assist in retainingholders 46 in therotor 32. In the exemplary embodiment, the body is made from a polycarbonate material, has a diameter of about 0.375 inches (9.525 millimeters) and a length of 1.15 inches (29.21 millimeters). - The
holders 46 are generally cylindrical in shape and having a diameter sized to fit within theopenings 54. Theholder 46 may be made from a suitable material, such as carbon fiber for example, that is capable of supporting the patient's samples under the centripetal forces generated during operation. Eachholder 46 has afirst end 58 positioned distal from thesidewall 56. Asecond end 60 is opposite thefirst end 58. In one embodiment, theholders 46 have a diameter of 0.125 inches (3.175 millimeters) and a length of 0.9 inches (22.86 millimeters). Ablind bore 62 is formed in theend 60 which has abottom end 64 adjacent thefirst end 58. Thebore 62 is sized to receive a capillary tube 66 (FIG. 9 ). In the exemplary embodiment, thebore 62 has a diameter of 0.079 inches (2 millimeters) and a length of 0.8 inches (20.32 millimeters). In one embodiment, theholders 46 are bonded to theopenings 54 using a suitable adhesive such as cyanoacrylate for example. - In another embodiment, the
holders 46 are gradually tapered from a larger diameter at thesecond end 60 to a smaller diameter at thefirst end 58. Thebody 44 hasopenings 54 with a corresponding taper. In this manner, theholders 46 may be inserted and held in place during operation while also allowing them to be removed for replacement or cleaning. In one embodiment, therotor 32 is made from materials that are suitable with chemical sterilization or autoclaving. - In operation, the
centrifuge 20 is installed in a location where thesolar panel 40 is exposed to sun and thebatteries 36 are charged. It should be appreciated thatsolar panel 40 may be removed from thecover 24 and positioned in an environment where sunlight is available, or the centrifuge itself may be placed in the sunlight. Once thebatteries 36 are charged to allow operation of the centrifuge, the clinician or other medical personnel obtains a sample of blood from a patient in acapillary tube 66 sized to fit within thebore 62. Thecapillary tube 66 is inserted into thecentrifuge 20. Typically, twocapillary tubes 66 will be processed at the same time to maintain abalanced rotor 32. In the event that only one sample needs to be processed, the clinician may insert an equally weighted capillary tube with an inert material (e.g. saline) in the opposingholder 46. - With the
capillary tubes 66 inserted, thecover 24 is closed and the rotor is rotated for a desired period of time. In the exemplary embodiment, the samples are processed for at a speed of 10,000 rpm for 90 seconds. The rotation of thecapillary tubes 66 causes the sample to separate into afirst portion 68 containing red blood cells and asecond portion 70 containing plasma. In the sample volumes used to check hematocrit, the buffy layer while present is negligible. With the sample separated into its components, the clinician may then measure theheight 72 of thefirst portion 68 to determine if the patient's hematocrit is within the normal range, or if the patient is anemic or polycythemic. - One problem in remote and low resource areas is controlling the quantity of blood placed in the
capillary tube 66. Typical conventional hematocrit procedures simply measure the height of the red blood cell column and assume that a standardized level of blood was obtained from the patient. As a result, the diagnosis made from reading the hematocrit may be erroneous if too large or too small of a sample is used. - In one embodiment, a
diagnosis card 74 is provided that assists the clinician in diagnosing the patient by having indicia that indicate different conditions. Thecard 74 has a series of lines, including abase line 76, a lowernormal range line 78, an uppernormal range line 80 and a 100% level line 82. Thelines common point 84 and extend on an angle, diverging as the line proceeds from the left side of the card to the right. The diverginglines % level line 82 starts from apoint 88 spaced apart from thepoint 84 and extends on an angle as the line extends from the left side to the right side. The area between the uppernormal range line 80 and theplasma line 96 defines apolycythemic range 90. Similarly, the area between the lowernormal range line 78 and thebase line 76 defines theanemic range 92. - Typically, different demographics of patients will have different diagnosis cards. For example, an infant will not have the same normal range as an adult. In one embodiment, the diagnosis card may have indicia representing different demographic groups. In this embodiment, each demographic group may be differentiated by having lines of different colors. In one embodiment, the diagnosis card may include lines for an adult male, an adult female, a ten year old adolescent, a one year old child and a three month old child.
- The
diagnosis card 74 may be made from a suitable material for the environment in which it will be used, such as but not limited to paper, card stock, card board, corrugated card board, wood, plastic or metal for example. Thediagnosis card 74 may be laminated with a clear plastic. In one embodiment, thediagnosis card 74 is a graphical representation on an electronic computing device having a screen or a monitor capable of displaying the graphical representation of thediagnosis card 74, such as but not limited to a computer, a laptop, a personal digital assistant, a tablet device, a telephone, a cellular phone, an internet phone or an e-reader device for example. - To use the
diagnosis card 74, the clinician processes thecapillary tube 66 to separate the red blood cells from the plasma as described above. The clinician then places thecapillary tube 66 against thecard 74 with the bottom of thecapillary tube 66 on thebase line 76. Thecapillary tube 66 is then moved along thebase line 76 until theplasma line 96 intersects the 100% level line. With thecapillary tube 66 in this position, the clinician may then determine if the patient is within normal, anemic or polycythemic ranges. It should be appreciated that the angling of thelines diagnosis card 74, since it does not rely upon measurements with a ruler or other device, may be easier for less skilled personnel, or personnel operating in a turbulent environment (e.g. a military field hospital), to use. In one embodiment, theranges - In one embodiment, the clinician may take a digital photograph of the
diagnosis card 74 with an electronic device such as but not limited to a digital camera, a cellular phone, a tablet device or a laptop for example. The electronic computing device may then scale the photograph to automatically, or through manual adjustment by the user, line up the image of thecapillary tube 66 on a graphical representation of thediagnosis card 74. In still another embodiment, the electronic computer device may automatically detect thelevel 68 and theplasma line 96 and determine whether the hematocrit is within the normal, anemic or polycythemic ranges. - Referring now to
FIGS. 11-12 , another embodiment is shown of thecentrifuge 20 for use in low resource or remote locations. In this embodiment, the blood sample is loaded into arotor 100 in the form of a disk having a plurality ofmicrofluidic channels centrifuge 20 as shown inFIG. 11 . In this embodiment, therotor 100 is coupled todevice 110 that is similar to a yoyo having astring 112 wrapped around acenter axis 114. To rotate therotor 100, the clinician simply pulls thestring 112 causing thedevice 110 and therotor 100 to spin. In one embodiment, the clinician may spin therotor 100 multiple times to achieve the desired separation. - While the invention has been described in detail in connection with only a limited number of embodiments, it should be readily understood that the invention is not limited to such disclosed embodiments. Rather, the invention can be modified to incorporate any number of variations, alterations, substitutions or equivalent arrangements not heretofore described, but which are commensurate with the spirit and scope of the invention. Additionally, while various embodiments of the invention have been described, it is to be understood that aspects of the invention may include only some of the described embodiments. Accordingly, the invention is not to be seen as limited by the foregoing description, but is only limited by the scope of the appended claims.
Claims (20)
1. A centrifuge comprising:
a power source configured to generate electrical power from a renewable power source;
at least one battery electrically coupled to the power source;
a motor electrically coupled to the at least one battery; and
a rotor coupled to the motor, the rotor having a generally cylindrical body and a pair of opposing openings opposite the motor, and a pair of holders each disposed in one of the pair of opposing openings, each of the pair of holders having an opening on one end sized to receive a capillary tube.
2. The centrifuge of claim 1 wherein the power source is a solar panel.
3. The centrifuge of claim 2 wherein the solar panel includes five 1000 mA, 0.55W solar panels.
4. The centrifuge of claim 1 wherein the pair of opposing openings are disposed on an angle.
5. The centrifuge of claim 4 wherein the angle is 65 degrees from a horizontal plane.
6. The centrifuge of claim 1 wherein the at least one battery includes a first battery and a second battery electrically coupled in parallel between the power source and the motor.
7. The centrifuge of claim 6 further comprising a controller configured to selectively couple the first battery to the motor.
8. The centrifuge of claim 7 wherein the controller is configured to charge the second battery with the power source when the first battery is coupled to the motor.
9. A method of evaluating a patient's hematocrit comprising:
separating a sample of blood in a capillary tube into a red blood cell portion and a plasma portion, the capillary tube having a bottom end;
providing a diagnosis card, the diagnosis card comprising:
a base line indicia;
a lower normal line indicia having a first starting point spaced apart from the base line indicia, the lower normal line indicia extending on a first angle relative to the base line indicia;
an upper normal line indicia having a second starting point coincident with the first starting point, the upper normal line indicia extending on a second angle relative to the lower normal line indicia;
a 100% level line indicia having a third starting point spaced apart from the first starting point, the 100% level line indicia extending on a third angle relative to the upper normal line indicia; and
placing the capillary tube against the diagnosis card with the bottom end placed adjacent the base line indicia.
10. The method of claim 9 further comprising moving the capillary tube until the bottom end aligns with the base line indicia and an end of the plasma portion opposite the bottom end is aligned with the 100% level line indicia.
11. The method of claim 10 further comprising diagnosing the patient as having anemic when the end of the red blood cell portion is between the base line indicia and the lower normal line indicia.
12. The method of claim 11 further comprising diagnosing the patient as having polycythemia when the end of the red blood cell portion opposite the bottom end is between the upper normal line indicia and the 100% level line indicia.
13. A system for evaluating a patient's hematocrit in a low resource area, the system comprising:
a centrifuge comprising:
a solar panel;
at least one battery electrically coupled to the solar panel;
a motor electrically coupled to the at least one battery; and
a rotor coupled to the motor, the rotor having a generally cylindrical body and a pair of opposing openings opposite the motor, and a pair of holders each disposed in one of the pair of opposing openings, each of the pair of holders having an opening on one end sized to receive a capillary tube; and,
a diagnosis device comprising a graphical screen, the graphical screen configured to display:
a base line indicia;
a lower normal line indicia having a first starting point spaced apart from the base line indicia, the lower normal line indicia extending on a first angle relative to the base line indicia;
an upper normal line indicia having a second starting point coincident with the first starting point, the upper normal line indicia extending on a second angle relative to the lower normal line indicia; and
a 100% level line indicia having a third starting point spaced apart from the first starting point, the 100% level line indicia extending on a third angle relative to the upper normal line indicia.
14. The system of claim 13 wherein the at least one battery includes a first battery and a second battery electrically coupled in parallel between the solar panel and the motor.
15. The system of claim 14 further comprising a controller configured to selectively couple the first battery to the motor.
16. The system of claim 15 wherein the controller is configured to charge the second battery with the solar panel when the first battery is coupled to the motor.
17. The system of claim 13 wherein the diagnosis device further comprises a camera.
18. The system of claim 17 wherein the diagnosis device is configured to scale a photograph of the capillary tube acquired by the camera on the graphical screen.
19. The system of claim 18 wherein the diagnosis device is further configured to superimpose the photograph of the capillary tube on the graphical screen with the base line indicia, the lower normal line indicia, the upper normal line indicia and the 100% level line.
20. The system of claim 19 wherein the diagnosis device is configured to scale the photograph automatically.
Priority Applications (3)
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US13/858,257 US20130265417A1 (en) | 2012-04-09 | 2013-04-08 | Centrifuge |
US15/006,326 US10295526B2 (en) | 2012-04-09 | 2016-01-26 | Method of evaluating a hemocrit |
US16/414,988 US10697957B2 (en) | 2012-04-09 | 2019-05-17 | Evaluation of hematocrit with manually-operated centrifuge |
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US201261621691P | 2012-04-09 | 2012-04-09 | |
US13/858,257 US20130265417A1 (en) | 2012-04-09 | 2013-04-08 | Centrifuge |
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US16/414,988 Active US10697957B2 (en) | 2012-04-09 | 2019-05-17 | Evaluation of hematocrit with manually-operated centrifuge |
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US15/006,326 Active 2034-03-19 US10295526B2 (en) | 2012-04-09 | 2016-01-26 | Method of evaluating a hemocrit |
US16/414,988 Active US10697957B2 (en) | 2012-04-09 | 2019-05-17 | Evaluation of hematocrit with manually-operated centrifuge |
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US (3) | US20130265417A1 (en) |
Cited By (3)
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WO2017058872A1 (en) * | 2015-09-29 | 2017-04-06 | Haemonetics Corporation | System and method for imaging a rotating object |
US20200289738A1 (en) * | 2019-03-11 | 2020-09-17 | ABC Med Tech Corp. | Centrifuge and method of use |
US20220297114A1 (en) * | 2017-07-17 | 2022-09-22 | Tasso, Inc. | Apparatus, systems and methods for preparing and shipping samples |
Families Citing this family (1)
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WO2014160125A1 (en) * | 2013-03-14 | 2014-10-02 | Centricycle, Inc. | Centrifuge device |
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US5242370A (en) * | 1992-03-12 | 1993-09-07 | Davstar California, Inc. | Centrifuge |
US5840019A (en) * | 1996-01-31 | 1998-11-24 | Wirebaugh; Jeffrey F. | Graphic presentation chart of medical tests for a patient |
AU2002352735A1 (en) * | 2001-11-20 | 2003-06-10 | Burstein Technologies, Inc. | Optical bio-discs and microfluidic devices for analysis of cells |
US20060144257A1 (en) * | 2003-05-16 | 2006-07-06 | Larry Cheng | Methods and apparatus for a vegetable spinner |
EP1639341B1 (en) * | 2003-07-02 | 2010-06-30 | CaridianBCT, Inc. | Monitoring and control system for blood processing |
CN200963974Y (en) * | 2006-09-15 | 2007-10-24 | 李碧华 | Turnable scripture wheel pen |
ATE483387T1 (en) * | 2007-02-07 | 2010-10-15 | Dalla Piazza & Co | MANUAL CENTRIFUGAL DRIVE WITH SWIVEL LEVER EFFECT |
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2013
- 2013-04-08 US US13/858,257 patent/US20130265417A1/en not_active Abandoned
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2016
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- 2019-05-17 US US16/414,988 patent/US10697957B2/en active Active
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US4738655A (en) * | 1987-06-17 | 1988-04-19 | Utah Bioresearch, Inc. | Apparatus and method for obtaining a rapid hematocrit |
US6506606B1 (en) * | 1995-06-06 | 2003-01-14 | Brigham And Women's Hospital | Method and apparatus for determining erythrocyte sedimentation rate and hematocrit |
WO2007025096A1 (en) * | 2005-08-24 | 2007-03-01 | Ward Thomas A | Hybrid vehicle with modular solar panel and battery charging system to supplement regenerative braking |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2017058872A1 (en) * | 2015-09-29 | 2017-04-06 | Haemonetics Corporation | System and method for imaging a rotating object |
US10564145B2 (en) | 2015-09-29 | 2020-02-18 | Haemonetics Corporation | System and method for imaging a rotating object |
US20220297114A1 (en) * | 2017-07-17 | 2022-09-22 | Tasso, Inc. | Apparatus, systems and methods for preparing and shipping samples |
US11673133B2 (en) * | 2017-07-17 | 2023-06-13 | Tasso, Inc. | Apparatus, systems and methods for preparing and shipping samples |
US20200289738A1 (en) * | 2019-03-11 | 2020-09-17 | ABC Med Tech Corp. | Centrifuge and method of use |
US11964092B2 (en) * | 2019-03-11 | 2024-04-23 | ABC Med Tech Corp. | Portable centrifuge and method of use |
Also Published As
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US20160139107A1 (en) | 2016-05-19 |
US10295526B2 (en) | 2019-05-21 |
US20190271683A1 (en) | 2019-09-05 |
US10697957B2 (en) | 2020-06-30 |
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