Patent WO2000013722A1 successfully refreshed from Google Patents.
GB2268286A
Expired / Lapsed
GB
⏱️ 0.0 years remaining
Synchronised intermittent infusion system
Assignee: Individual
•
Filing: 1992-09-01
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Granted: —
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Expires: 2012-09-01
Abstract
Abstract A medical syringe driver (6) provides a slow steady rate infusion of fluid which is broken into an intermittent bolus infusion by provision of a compressible chamber (4) in the fluid pathway which is allowed to fill with fluid, being compressed intermittently under electronic control by an external piston (3). A timing pulse from a ventilator device or other appropriate source (16) is modified by a control circuit (15) so as to allow the instillation of fluid to be precisely related to the cycle of the timing device, both in time and frequency, in order to control the infusion of the fluid into the patient's respiratory system. Alternatively, a valve system allows the compression system to pump the fluid as well as dividing the flow. <IMAGE>
Inventors
- 👤 Simon John Caswell
Bibliographic Details
Application Number
—
Jurisdiction
GB
Data Source
google_patents
Last Synchronized
2026-10-23 04:09
CPC Classifications
A; A61; A61M; A61M15/00; A61M16/00; A61M16/04; A61M16/0463; A61M16/0003; A61M2016/0015; A61M2016/0018; A61M2016/0021; A61M2016/0027; A61M2230/00; A61M2230/40
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
96 words
SYNCHRONISED INTERMITTENT INFUSION SYSTEM CLAIMS 1) A synchronised intermittent infusion system being a. system for
the intermittent infusion of fluids into body systems under the
control of an external timing circuit comprising a reservoir of
fluid instilled into the patient through a sterilised tubing system
with a compressible chamber, by the intermittent compression of
which the fluid may be instilled in timed boluses, the timing being
synchronised with the function of a body system or patient
support system or other suitable timing cycle, using a suitable
circuit to select, time and operate the chamber compression unit.
Claim 2
Dependent Claim
31 words
2) A synchronised intermittent infusion system as claimed in claim 1
where the reservoir comprises a medical syringe emptied at a
controlled rate using any standard syringe pump or syringe
driver.
Claim 3
Dependent Claim
48 words
3) A synchronised intermittent infusion system as claimed in claim 1
where the reservoir comprises an infusion bag or other similar
container and a valve system is incorporated with the
compressible chamber so that the compression of the chamber also
provides the pumping action to instil the fluid.
Claim 4
Dependent Claim
30 words
4) A synchronised intermittent infusion system as claimed in claim 3
where the chamber is constructed or adapted so that the volume
of each bolus can be measured and determined.
Claim 5
Dependent Claim
19 words
5) A synchronised intermittent infusion system as claimed in claims
1-4 where a motorised actuator operates the compression piston.
Claim 6
Dependent Claim
20 words
6) A synchronised intermittent infusion system as claimed in claim 5
where the actuator is operated by a stepper motor.
Claim 7
Dependent Claim
29 words
7) A synchronised intermittent infusion system as claimed in claim 5
where the actuator is operated by an electric motor constructed
or adapted to perform one revolution per actuation.
Claim 8
Dependent Claim
20 words
8) A synchronised intermittent infusion system as claimed in claim 5
where the actuator is operated by a servo motor.
Claim 9
Dependent Claim
26 words
SYNCHRONISED INTERMITTENT INFUSIONT SYSTEM 9) A synchronised intermittent infusion system as claimed in claims
5-8 where the actuator comprises a cam and a spring loaded
piston.
Claim 10
Dependent Claim
39 words
10) A synchronised intermittent infusion system as claimed in claims
5-8 where the actuator comprises a rotating arm or disc conected
to the piston by a pin or other attachment converting the rotation
to reciprocating action of the piston.
Claim 11
Dependent Claim
26 words
11) A synchronised intermittent infusion system as claimed in claims
1-4 where a solenoid or other electromagnetic or electrostatic
means is used to operate the piston.
Claim 12
Dependent Claim
29 words
12) A synchronised intermittent infusion system as claimed in claims
1-11 constructed or adapted for the instillation of fluids into the
respiratory system of patients on an artificial ventilator.
Claim 13
Dependent Claim
32 words
13) A synchronised intermittent infusion system as claimed in claim 12
where the ventilator device provides a signal to synchronise the
operation of the system with the inspiratory cycle of the
ventilator.
Claim 14
Dependent Claim
40 words
14) A synchronised intermittent infusion system as claimed in claim 12
where a pressure sensor responds to the airway pressure of the
ventilator system so as to synchronise the operation of the system
with the inspiratory cycle of the ventilator.
Claim 15
Dependent Claim
26 words
15) A synchronised intermittent infusion system as claimed in claims
12-14 constructed or adapted for the administration of artificial
surfactant in babies with respiratory distress syndrome.
Claim 16
Dependent Claim
22 words
16) A synchronised intermittent infusion system as claimed in claims
1-11 constructed or adapted for infusion of fluids into the
circulatory system.
Claim 17
Dependent Claim
23 words
17) A synchronised intermittent infusion system as claimed in claims
1-11 constructed or adapted for infusion of fluids into any other
body system.
Claim 18
Dependent Claim
19 words
18) A synchronised intermittent infusion system substantially as described herein with reference to figures 1-1|)of of the accompanying drawings.
References Cited (Backward Citations)
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