Classifications

• • 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
  • A61M1/02—Blood transfusion apparatus
• • 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
  • A61M1/60—Containers for suction drainage, adapted to be used with an external suction source
  • A61M1/63—Containers for suction drainage, adapted to be used with an external suction source with means for emptying the suction container, e.g. by interrupting suction
• • 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
  • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
  • A61M39/22—Valves or arrangement of valves
• • 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
  • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
  • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor

Definitions

• the present invention provides a blood transfusion system having valve circuit for transfusion of blood to a patient.
• Blood transfusion is used to exchange the infected blood with fresh blood of Neo-nates who are suffering from jaundice, have some other blood related diseases and for babies whose mothers have O (Rh negative) blood group.
• the blood transfusion requires continuous repetitive cycles of suction of about 5 to 20 ml of infected blood along with simultaneous infusion of same quantity of fresh blood.
• the blood transfusions are done through the disposable valve and syringes arrangement.
• the instrument based on this process i.e Blood Transfusion controller will have several advantages like accuracy and precision in blood transfusion at predetermined rate and initiation of various alarms so as to attract the attention of operator in case of malfunctioning.
• Figure 1 represents the system the various components used in a prior art and its working.
• Figure 2 represents the blood transfusion system of the present invention and its working.
• Stop-cork (1) is rotated manually in such a way that during inward stroke of syringe (3), infected blood goes to the waste bottle through IN set (4).
• stop-cork (2) is rotated manually in such a way that fresh blood is sucked from the bottle by syringe (3) outward stroke.
• both the stop-cork (1) and (2) are rotated manually such that inward stroke of a syringe (3) infuses the fresh blood to baby through the same tube.
• this process requires 5 times rotation of 3-way stop-corks & 4 strokes of syringe for one cycle of infusion and withdrawal, it requires the alertness of the doctor all through the process.
• the main object of the present invention is to provide a blood transfusion system with valve circuit which obviates the drawbacks as detailed above.
• Another object of the present invention is to provide an automatic blood transfusion system wherein lesser number of syringe strokes is required.
• Still another object of the present invention is to provide an automatic blood transfusion system which will result in minimum involvement of doctor, and that only for checking the functioning of instrument from time to time which obviates the drawback as detailed above.
• Yet another object of the present invention is to provide an automatic transfusion system which can infuse blood at required fixed speed thus eliminating chances of breakage of blood cell which obviates the drawback as detailed above.
• One more object of the present invention is to provide an automatic transfusion system which can have provision to record, give alarms and display the blood quantity interchanged.
• the present invention provides a blood transfusion system having valve circuit, for transfusion of blood to a patient, said system comprising a Y-shaped connector comprising of three arms [7, 16(a) and 16(b)] and a junction (9), wherein arm 7 is connected to the patient at its one end and to the junction (9) at its other end, arm 16(a) is connected to the junction (9) at its one end and to a waste-blood suction syringe (10) at its other end through a valve (11), an outlet is being provided in the arm 16(a) between the valve 11 and the waste-blood suction syringe for dispensing the waste blood, arm (16b) is connected to the junction (9) at its one end and to a fresh-blood supplying syringe (13) at its other end through a valve (14), a fresh-blood supplying means is being connected in the arm 16(b) between the valve 14 and the fresh-blood supplying syringe through a valve (15
• the arm 7 is connected to umbilical vein of the patient who is a baby.
• valves 11, 14 and 15 are disposable valves.
• valves 11, 14 and 15 are one way valves.
• the waste blood sucked out of the patient is collected in a waste-blood collecting means which is linked to the outlet provided on arm 16(a).
• the waste blood collecting means is linked to the outlet through a one-way disposable valve (12).
• the one-way disposable valve 12 is connected to the waste-blood collecting means through intra-venus sets (4).
• valve 15 is connected to the fresh- blood supplying means through intra-venus set (5).
• valves 11, 12, 14 and 15 may be controlled manually or using a stepper motor.
• waste blood from the patient and fresh blood from the fresh-blood supplying means are sucked simultaneously.
• fresh blood to the patient and waste- blood to the waste-blood collecting means are pumped simultaneously.
• valve 11 when waste-blood is sucked from the patient valve 11 is open and valve 12 is closed and when waste blood is pumped to the waste-blood collecting means valve 12 is open and valve 11 is closed.
• valve 15 when fresh-blood is sucked from fresh-blood supplying means valve 15 is open and valve 14 is closed and when fresh- blood is pumped to the patient valve 14 is open and valve 15 is closed.
• valves 12 and 14 are operated synchronously.
• valves 11 and 15 are operated synchronously.
• the syringes may be operated manually or using a syringe driving mechanism.
• said syringe driving mechanism comprises of a slider (8) connected to a motor (17) through a means for converting the rotational motion of the motor into linear motion (18).
• the syringes 10 and 13 may have same capacity or variable capacity.
• the syringes may be replaced to vary the capacity of the blood exchanged in one stroke.
• valve used may be disposable and may be up of Polycarbonate and silicon rubber, which are compatible with medical fluids.
• the transfusion may take from umbilical vein through umbilical tube.
• the syringe used may be of capacity between 5 - 20 ml.
• power supply used for driving the motors may be such as electric mains supply, storage battery, rechargeable battery.
• Disposable Naive circuit constitutes four one-way valves, one umbilical tube, three Y-connectors, two syringes and compatible tubings for various interconnections.
• the one-way valve are of disposable type and are made for use with medical fluids. These material of construction is Silicon rubber and Polycarbonate.
• Syringe fixing arrangement Syringes of capacity between 5-25 ml are required to be fixed. Clamping arrangement requires only loosening and tightening of screw after placing syringes in a N-groove.
• Syringe driving mechanism It constitutes of motor, slider and driving mechanism.
• Driving mechanism consists of rack and pinion arrangement.
• Quantity exchanged in one stroke 5- 20 ml Flow speed: Variable Mains Power 220N AC, 50 Hz.
• Example - 1 is given by way of illustration and therefore should not be construed to limit the scope of the present invention.
• Flow rate 20 ml/min.
• the green liquid was filled exactly 200 ml in the bottle (say patient) and red liquid was filled exactly 200ml in the bottle (fresh blood).
• the motor speed was set for 20 ml/min.
• the liquid was consumed in exactly 10 minutes.
• the main advantages of the present invention are : 1. Use of disposable valve circuit.
• Valves and tubing can be autoclaved and can be used with medical fluids.
• an automatic blood transfusion device can be designed and fabricated. It can have several audio and visual alarms to make the system safe and failure proof to the extent possible.
• Various features which can be incorporated are: LCD display of amount of blood infused and withdrawn and total time elapsed during infusion, Selection of flow rate by switches, LCD display for flow rate and alarms, Alarms for: Bubble in the flow line, Flow rate high, Operation complete, Leakage in circuit, High Pressure required to infuse. Rechargeable Battery and its indicator should be provided. System should immediately halt if any of the above alarming conditions were observed.

Landscapes

• Health & Medical Sciences (AREA)
• Heart & Thoracic Surgery (AREA)
• Hematology (AREA)
• Engineering & Computer Science (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Vascular Medicine (AREA)
• Pulmonology (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)
• External Artificial Organs (AREA)

Priority Applications (4)

Applications Claiming Priority (1)

Publications (1)

Family

ID=28053174

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (5)

Citations (4)

Family Cites Families (2)

• 2002
  • 2002-03-26 WO PCT/IB2002/001158 patent/WO2003080153A1/en not_active Application Discontinuation
  • 2002-03-26 KR KR1020047015464A patent/KR100884023B1/ko not_active IP Right Cessation
  • 2002-03-26 AU AU2002247926A patent/AU2002247926A1/en not_active Abandoned
  • 2002-03-26 CN CNB028288831A patent/CN100473424C/zh not_active Expired - Fee Related

Patent Citations (4)

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