CN113679907B - Control method and system of patient self-control pain relieving device - Google Patents
Control method and system of patient self-control pain relieving device Download PDFInfo
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- 238000000034 method Methods 0.000 title abstract description 15
- 230000036407 pain Effects 0.000 title abstract description 8
- 230000036592 analgesia Effects 0.000 claims abstract description 28
- 230000010365 information processing Effects 0.000 claims abstract description 23
- 230000000202 analgesic effect Effects 0.000 claims description 37
- 238000004364 calculation method Methods 0.000 claims description 13
- 238000012377 drug delivery Methods 0.000 abstract description 20
- 239000003814 drug Substances 0.000 description 53
- 229940079593 drug Drugs 0.000 description 38
- 238000001802 infusion Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000010200 validation analysis Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 229940035676 analgesics Drugs 0.000 description 1
- 239000000730 antalgic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001647 drug administration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/142—Pressure infusion, e.g. using pumps
- A61M2005/14208—Pressure infusion, e.g. using pumps with a programmable infusion control system, characterised by the infusion program
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
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- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of medical appliances, in particular to a control method and a control system of a patient self-control pain relieving device. The invention relates to a control method of a patient self-control analgesia device, which comprises the steps of counting the effective signal times N 1 and the ineffective signal times N 2 in an analgesia instruction signal, calculating the ineffective signal rate R 1 and the effective signal rate R 2, comparing and analyzing the values of R 1 and R 2 with a preset dose adjustment threshold value respectively, and adjusting or not adjusting PCA single dose according to the comparison result. The invention relates to a control system of a patient self-control analgesia device, which comprises: the device comprises a preset module, an information receiving module, an information processing module and a drug delivery module. The PCA device is intelligently adjusted according to the PCA condition of the user.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to a control method and a control system of a patient self-control analgesia device.
Background
Currently, electronic infusion pumps for infusing analgesic drugs generally have a PCA (Patient Controlled Analgesia, patient-controlled analgesia) function that enables a single volume infusion by a patient activating the PCA module only when the patient feels pain, for alleviating the lack of analgesia due to personalized differences.
However, during use of existing PCA systems, the single infusion of PCA per activation by the patient is set, often fixed. However, as the course of treatment progresses or the individual patients vary, the patient's need for a single infusion over different time periods may increase or decrease relative to the initial value; in addition, because it takes a certain amount of time for the drug to take effect, while the PCA infusion drug has been activated before the drug takes effect, the patient will continue to activate the PCA system due to pain because the drug has not been effective, resulting in a risk to the patient due to overdose of the drug over a certain period of time.
Disclosure of Invention
In order to solve the defects, the invention provides a control method and a control system of a patient self-control analgesic device.
The specific technical scheme of the invention is as follows:
a first aspect of the present invention provides a method of controlling a patient-controlled analgesia device, comprising:
receiving an analgesic instruction signal of a user;
Counting the effective signal times N 1 and the ineffective signal times N 2 in the analgesic instruction signals, and calculating the theoretical maximum effective times N 3;
Calculating an invalid signal rate R 1 and an effective signal rate R 2, said R 1= N2/ N1, said R 2= N1/ N3;
And comparing the values of R 1 and R 2 with preset dose adjustment thresholds respectively, and adjusting or not adjusting PCA single dose according to the comparison result.
In a second aspect, the present invention provides a method for controlling a patient-controlled analgesia device, comprising:
s1, acquiring initial single dose of PCA, total PCA dose and single locking time;
S2, acquiring setting parameters of a single dose fixed period, a single dose adjustment upper limit, a single dose increase threshold, a single dose increase rate, a single dose decrease threshold and a single dose decrease rate, and analyzing and calculating interval time;
s3, receiving an analgesic instruction signal of a user;
Step S4, counting the number of valid signals N 1 and the number of invalid signals N 2 in a single-dose fixed period, and calculating a theoretical maximum number of valid signals N 3 in a single-dose fixed period, where N 3 =single-dose fixed period/single locking time;
Step S5, calculating an invalid signal rate R 1 and an effective signal rate R 2 according to N 1、N2、N3, wherein R 1= N2/ N1 is the R 2= N1/ N3;
Step S6, comparing the values of R 1 and R 2 with a single dose increase threshold and a single dose decrease threshold respectively, and analyzing:
If N 1 >0 and R 1 > single dose increase threshold and R 2 > single dose decrease threshold, then entering the next single dose fixed period and adjusting PCA single dose in the next single dose fixed period according to the single dose increase rate;
(ii) if R 1 < single dose increase threshold, effective rate R 2 < single dose decrease threshold, entering a next single dose fixed period, and adjusting PCA single dose in the next single dose fixed period according to the single dose decrease rate;
(iii) if not (i) and (ii), repeating the steps S4, S5 and S6 after analyzing and calculating the interval time without adjusting.
The variation of the single dose of PCA in the next single dose fixed period of (i) or (ii) compared with the single dose of PCA in the previous single dose fixed period is less than 0.5ml, and then the variation is adjusted according to the amount of 0.5 ml.
Preferably, the method further comprises uploading, displaying and storing the adjustment record in the terminal in each single dose fixed period.
Preferably, the single lock time is less than the single dose fixed period.
A third aspect of the present invention provides a control system for a patient-controlled analgesia device comprising:
the presetting module is used for presetting PCA dosage and dosage adjustment parameters;
the information receiving module is used for receiving the analgesic instruction signal of the user;
The information processing module is used for processing the analgesic instruction signal of the user, comparing the processing result with a preset PCA dosage adjustment parameter, and adjusting or not adjusting the PCA single dosage according to the comparison result;
a drug delivery module for delivering a drug to a patient.
In a fourth aspect, the present invention provides a control system for a patient-controlled analgesia apparatus, comprising:
The first preset module is used for setting initial single dose of PCA, total PCA dose and single locking time;
The second preset module is used for setting a single dose fixed period, a single dose adjustment upper limit, a single dose increase threshold, a single dose increase rate, a single dose decrease threshold, a single dose decrease rate and an analysis and calculation interval module;
the information receiving module is used for receiving the analgesic instruction signal of the user;
A drug delivery module for delivering a drug to a patient;
The first information processing module is used for processing the received analgesic instruction signals and dividing the analgesic instruction signals of the user into effective signals and ineffective signals;
The second information processing module is used for counting the effective signal times N 1 and the ineffective signal times N 2 in a single dose fixed period, calculating the theoretical maximum effective times N 3 in the single dose fixed period, then calculating the ineffective signal rate R 1 and the effective signal rate R 2 according to N 1、N2、N3, comparing with a single dose increase threshold value and a single dose decrease threshold value, and carrying out comparison analysis, wherein the single dose of PCA is adjusted or not according to a comparison result.
Preferably, the control system further comprises a user terminal module for receiving, displaying and storing the adjustment record in each single dose fixed period.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) The control method of the patient self-control analgesia device comprises the steps of counting the effective signal times N 1 and the ineffective signal times N 2 in an analgesia instruction signal, and calculating the theoretical maximum effective times N 3; and calculating an invalid signal rate R 1 and an effective signal rate R 2, comparing and analyzing the values of R 1 and R 2 with a preset dose adjustment threshold value respectively, and automatically adjusting or not adjusting PCA single dose according to the comparison result. Thereby satisfying the patient's variation in single infusion volume for different time periods.
(2) The control system of the patient self-control analgesic device can set word locking time, ensures that a patient decides whether to press a button to request administration after the medicine is effective, and avoids the risk of excessive medicine infused to the patient in a short time caused by repeated pressing of the PCA administration button to request administration because the patient feels pain because the medicine is not effective.
(3) The setting of the interval time of the control system of the patient self-control analgesia device can enable the system to timely respond to the analgesia instruction signal and make timely adjustment, thereby meeting the requirements of patients. And the continuous calculation of the system is avoided, and unnecessary waste is avoided.
Drawings
Fig. 1 is a schematic diagram of a method for controlling a patient-controlled analgesia apparatus according to an embodiment of the present invention.
Detailed Description
In order that the invention may be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, in which, however, the invention may be embodied in many different forms and are not limited to the embodiments described herein, but are instead provided for the purpose of providing a more thorough and complete disclosure of the invention.
Example 1
The control system of the patient self-control analgesia device comprises a preset module, an information receiving module, an information processing module and a drug delivery module.
The preset module is used for setting single doses of medicines infused by the patient self-control analgesic device each time by medical staff; and setting parameters for controlling and adjusting the single dose of the medicament.
The information receiving module is used for receiving the analgesic instruction signal of the user; the patient analgesic instruction signal may be input by either a push mode or a voice control mode.
The information processing module is used for processing the analgesic instruction signal of the user received by the information receiving module, comparing the processing result with a preset parameter for controlling and adjusting the single dose of the medicine, and adjusting or not adjusting the single dose of the subsequent drug administration of the PCA according to the comparison result.
A drug delivery module for delivering a drug to a patient.
Example 2
The control system of the patient self-control analgesia device comprises a first preset module, a second preset module, an information receiving module, a first information processing module, a second information processing module and a drug delivery module.
The first preset module comprises a PCA initial single dose setting module, a PCA total dose setting module and a single locking time setting module.
The PCA initial single dose setting module is used for setting single doses of medicines infused by medical staff each time;
the PCA total dose setting module is used for setting the upper limit of the total dose of the medicine required by a patient in the whole treatment process by medical staff, so that the total dose of the medicine delivered by the medicine delivery module cannot exceed the upper limit of the total dose of the medicine which can be born by the patient, and the risk caused by excessive use of the medicine in the whole treatment process is avoided.
The single locking time setting module is used for setting single locking time by medical staff, and as a certain time is needed for the drug to be effective after the drug is infused into a human body, before the drug is effective, a patient may feel pain because the drug is not effective, and therefore the drug is requested to be administrated by pressing the PCA administration button for a plurality of times, which causes excessive drug infused into the patient in a short time before the drug is effective, and thus risks are caused. The single lock time is set by medical personnel according to the medication validation time, and is generally not less than the medication validation time. During a single lockout time period, only the first time the patient presses the medication delivery button will cause the medication delivery module to deliver medication, and the second and subsequent multiple presses of the medication delivery button will not cause the medication delivery module to deliver medication to the patient. After the single locking time is exceeded, the patient presses the drug delivery button again to enable the drug delivery module to deliver the drug to the patient, so that the next single locking time period is entered, and in the single locking time period, the patient presses the drug delivery button for a second time and multiple times afterwards, so that the drug delivery module does not deliver the drug to the patient. And so on.
The setting of the single locking time ensures that the patient decides whether to press the button to request the administration after the medicine is validated, and avoids the risk of excessive medicine infused to the patient in a short time caused by repeated pressing of the PCA administration button to request the administration because the patient feels pain because the medicine is not validated.
The second preset module comprises a single dose fixed period setting module, a single dose adjustment upper limit setting module, a single dose increase threshold setting module, a single dose increase rate setting module, a single dose decrease threshold setting module, a single dose decrease rate setting module and an analysis calculation interval module.
The single dose fixed period setting module is used for setting a single dose fixed period by medical staff. The PCA initial single dose setting module of the first preset module may set an initial single dose. However, as the course of treatment progresses or due to individual differences in the patient, the patient's need for a single infusion over a different period of time thereafter may increase or decrease relative to the initial value. In order to solve the problem, the single-dose fixed period is set by the single-dose fixed period setting module, and the single dose in the next single-dose fixed period is automatically adjusted every time the time of one single-dose fixed period passes. The single dose fixed period is greater than the single lock-out time, i.e., within a single dose fixed period, at least one single lock-out time period is included.
The single dose adjustment upper limit setting module is used for setting the single dose adjustment upper limit by medical staff, so that the single dose in the next single dose fixing period is ensured not to exceed an upper limit value, and the safety of a patient is ensured.
The single dose increase threshold setting module is used for setting a single dose increase threshold by medical staff, and the single dose increase threshold is used for comparing with an analysis result of the second information processing module so as to determine a single dose adjustment mode in a next single dose fixed period.
The single dose increase rate setting module is used for setting a single dose increase rate by medical staff, wherein the single dose increase rate is used for calculating single doses in a next single dose fixed period, namely, if the single doses in the next single dose fixed period need to be increased, the increase of the single doses is obtained by multiplying the single doses in the last single dose fixed period by the set single dose increase rate.
The single dose reduction threshold setting module is used for setting a single dose increase threshold by medical staff, and the single dose reduction threshold is used for comparing with an analysis result of the second information processing module so as to determine a single dose adjustment mode in a next single dose fixed period.
The single dose reduction rate setting module is used for setting a single dose reduction rate by medical staff, and the single dose reduction rate is used for calculating single doses in a next single dose fixed period, namely: if the single dose in the next single dose fixed period needs to be reduced, the reduction of the single dose is obtained by multiplying the single dose in the last single dose fixed period by the set single dose reduction rate.
The analysis and calculation interval module is used for setting interval time for the second information processing module to statistically process the analgesic instruction signal. The setting of the interval time can enable the system to timely react to the analgesic instruction signal and make timely adjustment, thereby meeting the requirements of patients. And the continuous calculation of the system is avoided, and unnecessary waste is avoided.
The information receiving module is used for receiving the analgesic instruction signal of the patient. The patient analgesic instruction signal may be input by either a push mode or a voice control mode.
The drug delivery module is for delivering a drug to a patient.
The first information processing module is used for processing the received analgesic instruction signal, judging whether the analgesic instruction signal is an effective signal or an ineffective signal, if the analgesic instruction signal is the effective signal, controlling the drug delivery module to deliver the drug, and if the analgesic instruction signal is the ineffective signal, controlling the drug delivery module not to deliver the drug;
The effective signal is an analgesic instruction signal received for the first time, and the first analgesic instruction signal received again after a single locking time is passed since the last effective signal is received; the other received analgesic command signals are inactive signals.
The second information processing module is configured to count the number of valid signals N 1 and the number of invalid signals N 2 in a single-dose fixed period, and calculate a theoretical maximum number of valid signals N 3 in a single-dose fixed period, where the theoretical maximum number of valid signals N 3 =single-dose fixed period/single locking time.
An invalid signal rate R 1 and an effective signal rate R 2 are then calculated from N 1、N2、N3, the invalid signal rate R 1= N2/ N1, the effective signal rate R 2= N1/ N3.
The values of R 1 and R 2 were compared to a single dose increase threshold, a single dose decrease threshold, respectively:
If N 1 >0 and R 1 > single dose increase threshold and R 2 > single dose decrease threshold, then entering the next single dose fixed period and adjusting PCA single dose in the next single dose fixed period according to the single dose increase rate;
(ii) if R 1 < single dose increase threshold, effective rate R 2 < single dose decrease threshold, entering a next single dose fixed period, and adjusting PCA single dose in the next single dose fixed period according to the single dose decrease rate;
(iii) if not (i) and (ii), repeating the steps S5, S6 and S7 after analyzing and calculating the interval time without adjusting.
Further, the variation of the single dose of PCA in the next single dose fixed period in (i) or (ii) is less than 0.5ml compared with the single dose of PCA in the previous single dose fixed period, and then the variation is adjusted by an amount of 0.5 ml.
Example 3
Compared with embodiment 2, the control system of the patient self-controlled analgesia device further comprises a user terminal module, wherein the user terminal module is used for receiving, displaying and storing adjustment records in each single dose fixed period.
Example 4
Referring to fig. 1, a method for controlling a patient-controlled analgesia apparatus according to the present embodiment comprises:
s1, acquiring initial single dose of PCA, total PCA dose and single locking time;
S2, acquiring setting parameters of a single dose fixed period, a single dose adjustment upper limit, a single dose increase threshold, a single dose increase rate, a single dose decrease threshold and a single dose decrease rate, and analyzing and calculating interval time;
s3, receiving an analgesic instruction signal of a user;
S4, judging whether an analgesic instruction signal of a user is an effective signal or an ineffective signal; if the signal is the effective signal, controlling the drug delivery module to deliver the drug, and if the signal is the ineffective signal, controlling the drug delivery module not to deliver the drug;
Step 5, counting the effective signal times N 1 and the ineffective signal times N 2 in a single-dose fixed period, and calculating the theoretical maximum effective times N 3 in the single-dose fixed period, wherein the theoretical maximum effective times N 3 =single-dose fixed period/single locking time;
Step S6, calculating an invalid signal rate R 1 and an effective signal rate R 2 according to N 1、N2、N3, wherein R 1= N2/ N1 is the R 2= N1/ N3;
step S7, comparing the values of R 1 and R 2 with a single dose increase threshold and a single dose decrease threshold respectively, and analyzing:
If N 1 >0 and R 1 > single dose increase threshold and R 2 > single dose decrease threshold, then entering the next single dose fixed period and adjusting PCA single dose in the next single dose fixed period according to the single dose increase rate;
(ii) if R 1 < single dose increase threshold, effective rate R 2 < single dose decrease threshold, entering a next single dose fixed period, and adjusting PCA single dose in the next single dose fixed period according to the single dose decrease rate;
(iii) if not (i) and (ii), repeating the steps S5, S6 and S7 after analyzing and calculating the interval time without adjusting.
Preferably, the variation of the single dose of PCA in the next single dose fixed period of (i) or (ii) is less than 0.5ml compared to the single dose of PCA in the previous single dose fixed period, and is adjusted by an amount of 0.5 ml.
Example 5
An application example of a control system of a patient-controlled analgesia apparatus of the present embodiment includes:
medical staff sets a single dose of a drug for each infusion of a certain anesthetic to be 3ml, the upper limit of the total dose of the drug to be 80ml and the single locking time to be 10min on a first preset module.
Medical staff sets a single dose fixed period of 2h, a single dose adjustment upper limit of 6ml, a single dose increase threshold of 40%, a single dose increase rate of 20%, a single dose decrease threshold of 40%, a single dose decrease rate of 20% and an analysis calculation interval of 5min on a second preset module.
The parameters are set to start timing, the first single dose fixed period is entered, namely, in the following 2 hours, if the analgesic instruction signal of the patient is a valid signal, the dose of the medicine delivered to the patient by the medicine delivery module is 3ml set by medical staff.
When the first single dose fixed period is entered for 20min, the patient presses the PCA administration button to give a first analgesic command signal, which is an effective signal, and the drug delivery module delivers 3ml of drug to the patient at this time, and the next 10min enters the single locking time period, i.e. the next 10min, and the analgesic command signals given by the patient pressing the PCA administration button are all ineffective signals, so that the drug delivery module cannot deliver drug to the patient. Until after 10 minutes the patient presses again the analgesic command signal given by the PCA dosing button, at which point the drug delivery module will deliver 3ml of drug to the patient as a valid signal, while the next 10 minutes again enters a single lock-in time period, and so on.
After the first single-dose fixed period 2h, the second information processing module starts counting the effective signal times and the ineffective signal times in the first single-dose fixed period 2h, and the effective signal times and the ineffective signal times are counted to obtain 4 effective signals and 2 ineffective signals, and meanwhile the theoretical maximum effective times are calculated for 12 times, namely the theoretical maximum effective times=2h/10 min.
Further calculations were made of the invalid signal rate R 1=N2/ N1 =2/4=0.5, the effective signal rate R 2= N1/ N3 =4/12=0.33,
Comparing the calculated values of R 1 (0.5) and R 2 (0.33) with the set single dose increase threshold (0.4) and single dose decrease threshold (0.4), and if the adjustment conditions (i) (ii) are not satisfied, the next single dose fixed period is not entered, and no adjustment occurs. At this point, by 5 minutes (the interval between analytical calculations), the patient sends a valid signal and the drug delivery module delivers a dose of 3ml to the patient.
After an analysis calculation interval of 5min, the second information processing module reckons the effective signal times and the ineffective signal times in the last 2h (namely, the effective signal times and the ineffective signal times in the period from the beginning of the first single-dose fixed period of 5min to the end of the first single-dose fixed period of 5 min), further calculates the ineffective signal rate R 1 and the effective signal rate R 2, and performs comparison analysis with the set single-dose increase threshold and the single-dose decrease threshold, if the adjustment conditions (i) and (ii) are still not met, the next single-dose fixed period is not entered, and no adjustment is performed. And then, counting the effective signal times and the ineffective signal times in the last 2h again by the second information processing module every 5min of analysis and calculation intervals, further calculating the ineffective signal rate R 1 and the effective signal rate R 2, and comparing and analyzing with the set single-dose increase threshold and the single-dose decrease threshold until the whole condition (i) and (ii) are met.
After an analysis and calculation interval of 5min again after 2.5h from the beginning of the first single-dose fixed period does not enter the next single-dose fixed period, the second information processing module counts the number of valid signals and the number of invalid signals within the last 2h (namely, 2h from 35min after the beginning of the first single-dose fixed period to 35min after the end of the first single-dose fixed period), and the number of valid signals and the number of invalid signals are counted, wherein the number of valid signals and the number of invalid signals are 6 in total.
Further calculations were made of the invalid signal rate R 1=N2/ N1 =3/6=0.5, the effective signal rate R 2= N1/ N3 =6/12=0.5,
Comparing the calculated values of R 1 (0.5) and R 2 (0.5) with the set single dose increase threshold (0.4) and single dose decrease threshold (0.4), and if the adjustment condition (i) is met, entering the next single dose fixed period, and simultaneously adjusting the PCA single dose in the next single dose fixed period according to the single dose increase rate (20 percent); i.e. the next 2h single dose fixed period, the dose of drug delivered to the patient by the drug delivery module is adjusted to 3.6ml if the patient's analgesic command signal is a valid signal. After 2 hours, the second information processing module starts counting the effective signal times and the ineffective signal times in the last 2 hours, further calculates the ineffective signal rate R 1 and the effective signal rate R 2, performs comparison analysis with the set single dose increase threshold and single dose decrease threshold, and performs corresponding adjustment according to the adjustment conditions (i) (ii) (iii). And so on.
Example 6
The application of the control system of the patient-controlled analgesia device of the present embodiment further includes uploading, displaying and storing the adjustment record in each single dose fixed period in the terminal, compared with embodiment 5.
Example 7
The difference between the application of the control system of the patient-controlled analgesia device of the present embodiment and the application of the control system of the patient-controlled analgesia device of the present embodiment is that the single dose increasing rate is set to 10%, the variation of the single dose of the PCA in the next single dose fixed period is adjusted to be smaller than 0.5ml according to the single dose increasing rate (10%), and then the variation of the single dose of the PCA in the next single dose fixed period is adjusted to be 0.5ml, that is, the single dose of the PCA in the next single dose fixed period is 3.5ml.
The foregoing examples merely illustrate certain embodiments of the invention and are described in more detail and are not to be construed as limiting the scope of the invention; it should be noted that it is possible for a person skilled in the art to make several variants and modifications without departing from the concept of the invention, all of which fall within the scope of protection of the invention; accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (2)
1. A control system for a patient-controlled analgesia device, the preset module comprising:
The first preset module is used for setting initial single dose of PCA, total PCA dose and single locking time;
The second preset module is used for setting a single dose fixed period, a single dose adjustment upper limit, a single dose increase threshold, a single dose increase rate, a single dose decrease threshold, a single dose decrease rate and an analysis and calculation interval module;
the information receiving module is used for receiving the analgesic instruction signal of the user;
the first information processing module is used for processing the analgesia instruction signal received by the information receiving module and dividing the analgesia instruction signal of the user into an effective signal and an ineffective signal;
The effective signal is an analgesic instruction signal received for the first time, and the first analgesic instruction signal received again after a single locking time is passed since the last effective signal is received; other received analgesic command signals are invalid signals;
The second information processing module is used for counting the effective signal times N1 and the ineffective signal times N2 in the first information processing module in a single dose fixed period, calculating the theoretical maximum effective times N3 in the single dose fixed period, then calculating the ineffective signal rate R1 and the effective signal rate R2 according to N1, N2 and N3, and comparing and analyzing with a single dose increase threshold and a single dose decrease threshold set on the second preset module, and adjusting or not adjusting PCA single dose according to a comparison result;
the theoretical maximum number of effective n3=single dose fixed period/single lock-in time;
The invalid signal rate r1=n2/N1;
The effective signal rate r2=n1/N3;
when in use, the following steps are executed:
step S1, a first preset module acquires initial single dose of PCA, total PCA dose and single locking time;
S2, a second preset module acquires setting parameters of a single dose fixed period, a single dose adjustment upper limit, a single dose increase threshold, a single dose increase rate, a single dose decrease threshold and a single dose decrease rate, and analyzes and calculates interval time;
S3, the information receiving module receives an analgesic instruction signal of a user;
S4, the first information processing module counts the effective signal times N1 and the ineffective signal times N2 in a single dose fixed period, and sends the effective signal times N1 and the ineffective signal times N2 to the second information processing module;
Step 5, receiving effective signal times N1 and ineffective signal times N2, and calculating theoretical maximum effective times N3 in a single dose fixed period, wherein the theoretical maximum effective times N3 = single dose fixed period/single locking time; calculating an invalid signal rate R1 and an effective signal rate R2 according to N1, N2 and N3, wherein R1 = N2/N1, and R2 = N1/N3;
step S6, comparing and analyzing the values of R1 and R2 with a single dose increase threshold value and a single dose decrease threshold value respectively:
If N1 is greater than 0, R1 is greater than the single dose increase threshold, and R2 is greater than the single dose decrease threshold, then entering the next single dose fixed period, and adjusting the PCA single dose in the next single dose fixed period according to the single dose increase rate;
(ii) if R1 < the bolus increase threshold, the effective rate R2 < the bolus decrease threshold, then entering a next bolus fixed period, and adjusting the PCA bolus in the next bolus fixed period according to the bolus decrease rate;
(iii) if not (i) and (ii), repeating the steps S4, S5 and S6 after analyzing and calculating the interval time without adjusting.
2. The control system of a patient-controlled analgesia apparatus of claim 1, wherein: the system also comprises a user terminal module for receiving, displaying and storing the adjustment record in each single dose fixed period.
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| CN104548272A (en) * | 2015-01-01 | 2015-04-29 | 江苏人先医疗科技有限公司 | Insufficient analgesia monitoring method and relevant analgesia pump |
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| WO2002049503A2 (en) * | 2000-12-19 | 2002-06-27 | University Of Rochester | Method and device for administering medication and/or placebo |
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| US10232113B2 (en) * | 2014-04-24 | 2019-03-19 | Medtronic Minimed, Inc. | Infusion devices and related methods and systems for regulating insulin on board |
| CN113679907B (en) * | 2021-08-27 | 2024-04-30 | 巨翊科技（上海）有限公司 | Control method and system of patient self-control pain relieving device |
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| CN101500628A (en) * | 2006-06-13 | 2009-08-05 | 卡迪纳尔健康303公司 | System and method for optimizing control of PCA and PCEA system |
| CN103170033A (en) * | 2013-03-15 | 2013-06-26 | 南通爱普医疗器械有限公司 | Analgesia patient controlled analgesia (PCA) pump and method based on fuzzy mathematics judgment for pain degree of analgesia |
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