The document provides an overview of heart-lung machines, emphasizing their role in temporarily taking over the function of the heart and lungs during surgical procedures. It outlines the layout and components of a cardiopulmonary bypass (CPB) circuit, including venous cannulae, reservoirs, pumps, oxygenators, heat exchangers, and filters. Various models of heart-lung machines are also mentioned.

1. Layout &
Components of a
Heart-Lung
Machine
By:
Revathi Maroju.

2. Objectives
01
03
02
What is a Heart-lung machine?
How the basic Layout of CPB circuit looks
like?
What are the various Components of heart-
lung machine?

3. Contents
01
03
02
04
Introduction to Heart-lung
machine
Layout of CPB circuit/heart-lung
machine
Components of heart-lung
machine
Various models of heart-lung
machines

4. Introductio
n
01

5. A heart-lung machine is an equipment that
temporarily takes over the work of the heart
and/or lungs, providing blood and oxygen to the
body.
Also called a cardiopulmonary bypass circuit
(CPB) or a heart-lung bypass machine, it is most
often used during serious procedures that
require the heart to be stopped.
What is a heart-lung machine?

6. Patients are kept on a heart-lung machine for only
as long as it takes to stop the heart from beating,
complete open-heart surgery or a procedure on
the lungs, and restart the heart.
A heart-lung machine may also be used on a
person who needs heart or respiratory support
for non-surgical reasons.
What is a heart-lung machine?

8. CPB circuit
02

10. Components
of HLM
03

11. CARDIO-PULMONARY BYPASS
CIRCUIT
Venous Cannulae
Venous reservoir
Pump
Oxygenator
Heat exchanger
Filter
Arterial cannulae
Basic components of CPB circuit

12. 1. Venous Cannulae:
They drain the blood from the
patient into the CPB circuit.
One or more cannulas may be used
based on the type of procedure or
preference of surgeon.
Basic components of CPB

13. 2. Venous Reservoir:
This stores the blood which is
received from cannulae.
Two types: Collapsable and Rigid
compartment
Basic components of CPB

14. 3. Pump:
It is the device which is used to
generate or produce the pressure
required to return the blood to the
patient.
Types: Roller pump, Centrifugal
pump
Basic components of CPB

15. 4. Heat Exchanger:
It monitors and regulates the
temperature of the blood to
provide moderate systemic
hypothermia.
Water circulates within the heat
exchanger in a counter current
way to maintain the
Basic components of CPB

16. 5. Oxygenator:
It is the device which helps in the
O2 and CO2 exchange.
Types: Bubble and Membrane
oxygenators.
Basic components of CPB

17. 6. Filters:
These are designed to trap
particulate matter and gas
emboli.
Filters are used in suction line,
arterial line and venous line.
Basic components of CPB

18. 7. Arterial cannulae:
These cannulae return the blood
from the CPB circuit to the
patient.
Ascending aorta is the most
common site for the arterial
cannulation.
Basic components of CPB

19. Models of
HLM
04

20. Maquet HL-20

21. Terumo SARNS
HLM 3746

22. Terumo SARNS
HLM 8000 2505

24. Thanks..!!!