GB2502534A - Pulsatile flow simulator - Google Patents

Pulsatile flow simulator Download PDF

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Publication number
GB2502534A
GB2502534A GB201209494A GB201209494A GB2502534A GB 2502534 A GB2502534 A GB 2502534A GB 201209494 A GB201209494 A GB 201209494A GB 201209494 A GB201209494 A GB 201209494A GB 2502534 A GB2502534 A GB 2502534A
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GB
United Kingdom
Prior art keywords
flow
pulsatile flow
reservoir
simulator
waveforms
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Withdrawn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
GB201209494A
Other versions
GB201209494D0 (en
Inventor
Usman Jaffer
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 GB201209494A priority Critical patent/GB2502534A/en
Publication of GB201209494D0 publication Critical patent/GB201209494D0/en
Publication of GB2502534A publication Critical patent/GB2502534A/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
    • G09B23/30—Anatomical models
    • G09B23/303—Anatomical models specially adapted to simulate circulation of bodily fluids
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Medicinal Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Algebra (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Medical Informatics (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Instructional Devices (AREA)

Abstract

A pulsatile flow simulator has been developed in response to a need to train personnel to effectively interpret the results of vascular waveforms. The device consists of an impeller motor, a stepper motor and a series of valves F and pumps which feed fluid from a reservoir D to a section of simulated tissue B. By varying the time and degree to which valves are open; the strength, direction and duration of flow can be regulated. The system allows commonly observed waveforms to be easily replicated and can individually adjusted to suit the requirements of the trainer.

Description

The vascular flow simulator we have developed runs using a special valve arrangement to regulate flow in the forward and reverse direction.
Different waveforms are generated by adjusting the amplitude and duration of the two positive peaks and one negative peak.
By varying the time and degree to which the valves are open, the amount of flow and the duration of flow in various segments of the simulated waveform is regulated.
The parameters used to control the waveform by PC are sent and stored in the on-board controller for the stepper motor used to move the valve. The communication is via RS422 (USB) The simulator is able to produce five distinct waveforms by turning a rotary switch.
* Femoral artery * Common carotid artery * Internal carotid artery * External carotid artery * Venous waveform The simulator's output is calibrated using an in-line flow meter.
Waveform generation Below is the preferred method for producing pulsatile flow profiles and flow adjustment.
The standard profile consists of a primary peak1 secondary I reverse peak and a final peak, as shown below The simulator can work in stand-alone mode (without a PC) and has as standard has 5 typical waveforms hard-programmed as mentioned above.
The profile is constructed as follows (Al, 2 and 3 represent the positive and negative openings of the valve; P1 to 7 represent programmable pauses in the valve movement): Al A3
I TJ J
Key to drawings Drawing 1. Photograph of pulsatile flow simulator. A) Pulsatile flow generating assembly. B) external pipe with simulated block of tissue. C) Quick release connectors. D) reservoir. F) conduit pipework. F) valve assembly. G) Waveform selector.
Drawing 2. Front view schematic of Pulsatile flow simulator.
Drawing 3. Front and top view of Pulsatile flow simulator showing selection of on-board vascular waveforms.
Drawing 4. Back view of Pulsatile flow simulator showing RS232 connector and power supply connector.
Drawing 5. Front view of front panel of Pulsatile flow simulator showing: A) grooves for conduit pipes; B) mounting area for valve and C) reservoir.
Drawing 6. Close up cut-away of valve showing inflow and outlet channels (A) with central valve directing flow (B).
Drawing 7. Schematic of valve assembly directing flow from reservoir into pump and returning to reservoir avoid flow into the external pipe (body').
Drawing 8. Schematic of valve assembly directing flow from reservoir into pump * then into external pipe (body'), then returning to reservoir.
* Drawing 9. Schematic of valve assembly directing flow from reservoir into *:*::* external pipe (body'), then valve then pump, then back to valve, then back to reservoir. * * * a ** * * * * a.
GB201209494A 2012-05-29 2012-05-29 Pulsatile flow simulator Withdrawn GB2502534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB201209494A GB2502534A (en) 2012-05-29 2012-05-29 Pulsatile flow simulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB201209494A GB2502534A (en) 2012-05-29 2012-05-29 Pulsatile flow simulator

Publications (2)

Publication Number Publication Date
GB201209494D0 GB201209494D0 (en) 2012-07-11
GB2502534A true GB2502534A (en) 2013-12-04

Family

ID=46546103

Family Applications (1)

Application Number Title Priority Date Filing Date
GB201209494A Withdrawn GB2502534A (en) 2012-05-29 2012-05-29 Pulsatile flow simulator

Country Status (1)

Country Link
GB (1) GB2502534A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050131307A1 (en) * 2003-12-15 2005-06-16 Ruiter Karl A. Compact oscillometric blood pressure simulator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050131307A1 (en) * 2003-12-15 2005-06-16 Ruiter Karl A. Compact oscillometric blood pressure simulator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Axiom Ultrasound, "Demonstration Simulator for Duplex Vascular Ultrasound" [online], published August 2010. *

Also Published As

Publication number Publication date
GB201209494D0 (en) 2012-07-11

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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)