Insulin Automated Pumps Case Solution
From the sensor of the device,the system automatically computes the level of glucose of the blood.This system also compares frequent readings of the readings and if the device detects continuous increase of glucose in the blood of the patient, then it acts against this increase by injecting appropriate level of insulin.
Indication of Safety
There are bands that assure about safety of the level of glucose among patient’s blood. However, the signal of “safe band†provides surety that the glucose is in normal range. The range for safe band exists between 3 to 7 units. Moreover, if the sugar level remains below 3 units, then it is the “unsafe band†of sugar level and it can lead to hypoglaecemia. Hypoglaesemia may lead to comma or death. Furthermore, if this unit is above 7 units, then it is called “undesirableâ€. Undesirability does not affect in the short–term however, it may have long term effects on the body.
Following applications are suggested according to the level of units and safety levels of bands:
If the sugar level is atunsafe band, then the injection of insulin is prohibited, as well as it also remains as the first warning for the users.
However, if the level of sugar is stable, then the system does not inject the insulin, as per safe band.
In the course of action, if the level of sugar is undesirable, then the system injects the insulin with the appropriate insulin quantity. It injects with the proportion’s enhancement of insulin; for instance, if the level has increase thenit will insert 20 injects instead of using 10.
De Functioning of Insulin
There are numerous reasons for which Insulin system can counteract and among those reasons the three reasons are electrical failure, biological failure, physical failure nonetheless software related hazards.
These failures can be in the form of:
Software Failure
Insulin system is intensive of the arithmetic calculation and algorithm formation. This is the reason that with a minor maladjustment, an error can occur in the estimation of the measurement of the blood glucose.
Algorithm errors may contribute to the insulin failure and a check can be made on realism of the dose computed.
The fault tree is given in Exhibit 2
Other Failures
If there is overdose or less insulin provided.
Insulin pump can be break within the body of the patient.
Infection can be causeddue to induction of the system.
Due to the material of machinery used in the body, an allergic reaction can be caused.
Machine can be fixed inappropriately.
An analysis of consequences has explained in Exhibit 1, and such consequences are caused due to such circumstances.
Recommendation
From the above issues, the accuracy of measurement of the insulin can be affected as well. The insulin can lead to under dose or overdose due to the features of software that includes performance of Arithmetic and Algorithm.
For the purpose of reducing dosages with the insulin followingmeasures can be taken
For the Arithmetic errors
Following measures can be taken for the arithmetic error, if there are chances of it:
Manufacturers of insulin should use language exception handling mechanism that can be used to detect the errors as soon as they arise.
For the errors that have been identified during the check, they should then be checked explicitly by the engineers.
At the user’s end, the system should be closed as soon as it is detected.
For theAlgorithm errors
Algorithm errors should be concentrated with the following suggestions:
A responsible check should be made to the patient for inserting the dose, as it has been previously made with the insulin.
An algorithm measure error is rather difficult to detect than the arithmetic errors…………….
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