GB2291191A - Hand held doppler probe - Google Patents

Hand held doppler probe Download PDF

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Publication number
GB2291191A
GB2291191A GB9413735A GB9413735A GB2291191A GB 2291191 A GB2291191 A GB 2291191A GB 9413735 A GB9413735 A GB 9413735A GB 9413735 A GB9413735 A GB 9413735A GB 2291191 A GB2291191 A GB 2291191A
Authority
GB
United Kingdom
Prior art keywords
probe
doppler
blood flow
hand held
held
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9413735A
Other versions
GB9413735D0 (en
Inventor
Mark Steven Whiteley
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB9413735A priority Critical patent/GB2291191A/en
Publication of GB9413735D0 publication Critical patent/GB9413735D0/en
Publication of GB2291191A publication Critical patent/GB2291191A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4272—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue
    • A61B8/4281—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue characterised by sound-transmitting media or devices for coupling the transducer to the tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/06—Measuring blood flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/663—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by measuring Doppler frequency shift
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/50—Systems of measurement, based on relative movement of the target
    • G01S15/58—Velocity or trajectory determination systems; Sense-of-movement determination systems

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Acoustics & Sound (AREA)
  • Hematology (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

Hand held Doppler probes are used for the non-invasive investigation of blood flow. Current designs of probes have flat ends that encourage the probe to be held at 90 DEG to the surface and therefore 90 DEG to the blood flow. Doppler theory requires the probe to be held at an acute angle to the blood flow, usually 60 DEG degrees, to optimise the Doppler signal. This invention is an end piece 4 for a Doppler probe 3 that holds the probe at an acute angle to the surface and therefore the blood flow. The end pipe may be separate or built into the probe as part of its construction. <IMAGE>

Description

A DEVICE TO IMPROVE USE OF THE HAND HELD DOPPLER This invention relates to the use of hand held Doppler to detect blood flow.
Hand held Doppler is a routine, non-invasive, ultrasound method of detecting blood flow within vessels in humans and animals. Used in conjunction with pneumatic cuffs, occlusion pressures (blood pressures) can be derived non-invasively. By collecting the waveform data other haemodynamic information can be derived.
However, for hand held Doppler to be effective, it must be held at an acute angle to the oncoming blood flow. When held at 90 degrees to the flow of blood there is no nett flow towards, or away from, the Doppler probe and so the signal is poor or absent.
Current hand held Doppler probes are made with flat ends, at 90 degrees to the long axis of the probe, that encourage the user to hold the probe at 90 degrees to the skin and hence the blood flow.
According to the present invention there is provided a shaped end for the Doppler probe that when held flat on a surface, holds the Doppler probe at an angle to that surface. This endpiece can be detachable or fashioned from the material compromising the Doppler probe itself with the same effect.
A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawing in that: Figure 1 shows a shaped end piece for the Doppler probe.
Figure 2 shows a cross-section of a Doppler probe being within the shaped end piece.
The shaped end piece 1 as shown in Fig. 1 has a hole 2 for the Doppler probe. This probe can be inserted 3 as in Fig. 2 at which point it will be held by the end piece 4 at an angle to the surface. This provides the required angulation for correct insonation of the blood flow.

Claims (2)

1 An end piece for a Doppler probe that holds the probe at an acute angle to the surface.
2 An end piece that may be built into the probe as part of its construction to have the same effect.
GB9413735A 1994-07-07 1994-07-07 Hand held doppler probe Withdrawn GB2291191A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9413735A GB2291191A (en) 1994-07-07 1994-07-07 Hand held doppler probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9413735A GB2291191A (en) 1994-07-07 1994-07-07 Hand held doppler probe

Publications (2)

Publication Number Publication Date
GB9413735D0 GB9413735D0 (en) 1994-08-24
GB2291191A true GB2291191A (en) 1996-01-17

Family

ID=10757991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9413735A Withdrawn GB2291191A (en) 1994-07-07 1994-07-07 Hand held doppler probe

Country Status (1)

Country Link
GB (1) GB2291191A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107874781A (en) * 2017-11-07 2018-04-06 广州华科盈医疗科技有限公司 A kind of probe for being used to detect the VPV and blood vessel image figure of blood vessel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1210476A (en) * 1967-04-07 1970-10-28 Comp Generale Electricite Recording volume flowmeter
GB1298707A (en) * 1969-05-31 1972-12-06 Siemens Ag An apparatus for locating a fluid carrying passage or organ in a human or an animal body to permit insertion of an injection needle into the passage or organ
GB1528917A (en) * 1974-12-11 1978-10-18 Detectronic Ltd Method and apparatus for monitoring the flow of liquid and the like
GB2009563A (en) * 1977-11-24 1979-06-13 Emi Ltd Ultrasonic probes
US4355643A (en) * 1980-03-05 1982-10-26 University Of Iowa Research Foundation Vacuum cup doppler flow transducer and method for using same
EP0380268A1 (en) * 1989-01-26 1990-08-01 Minnesota Mining And Manufacturing Company Doppler blood flow system and method using low frequency noise signal processing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1210476A (en) * 1967-04-07 1970-10-28 Comp Generale Electricite Recording volume flowmeter
GB1298707A (en) * 1969-05-31 1972-12-06 Siemens Ag An apparatus for locating a fluid carrying passage or organ in a human or an animal body to permit insertion of an injection needle into the passage or organ
GB1528917A (en) * 1974-12-11 1978-10-18 Detectronic Ltd Method and apparatus for monitoring the flow of liquid and the like
GB2009563A (en) * 1977-11-24 1979-06-13 Emi Ltd Ultrasonic probes
US4355643A (en) * 1980-03-05 1982-10-26 University Of Iowa Research Foundation Vacuum cup doppler flow transducer and method for using same
EP0380268A1 (en) * 1989-01-26 1990-08-01 Minnesota Mining And Manufacturing Company Doppler blood flow system and method using low frequency noise signal processing

Also Published As

Publication number Publication date
GB9413735D0 (en) 1994-08-24

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)