CN113384244A - Negative pressure suction system - Google Patents
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- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
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Abstract
The invention relates to the technical field of medical monitoring systems, in particular to a negative pressure suction system, which comprises: the suction device is used for sucking mixed liquid generated in the operation; the storage device is used for storing the mixed liquid pumped by the pumping device; the monitoring device is used for monitoring the volume of the mixed liquid in the storage device; also for measuring the intraoperative Hb value of the mixture; the weight of the blood-soaked gauze with blood gauze in the operation is collected; the calculation module is used for acquiring a preoperative Hb value and calculating the pumping bleeding amount according to the volume, the intraoperative Hb value and the preoperative Hb value; the device is also used for acquiring the weight of the dry gauze and calculating the infiltration bleeding amount according to the weight of the dry gauze, the weight of the blood-soaked gauze and the preset unit blood-soaking amount; the amount of bleeding during aspiration and infiltration hemorrhaging were superimposed. The accuracy rate of estimating the amount of bleeding in the art can be improved by adopting the scheme.
Description
Technical Field
The invention relates to the technical field of medical monitoring systems, in particular to a negative pressure suction system.
Background
During operation, in order to ensure the clear operation field, it is necessary to absorb the liquid generated during operation in time, for example, using gauze to absorb the liquid in the operation field, or using a negative pressure suction device to directly absorb the liquid in the patient body. In the operation process, the bleeding amount of the patient needs to be estimated in time, so that whether the patient needs to be transfused or not is judged, and the medical accident caused by excessive blood loss of the patient is avoided.
In the prior art, the bleeding amount is estimated according to the absorption mode of body fluid of a patient, and if the blood is absorbed by gauze, the bleeding amount is estimated according to the gauze amount used in the operation; if a negative pressure aspiration device is used, the amount of bleeding is estimated from the fluid drawn. However, in general surgery, the fluid generated by the patient is blood, and the bleeding condition during surgery can be known only by directly estimating the fluid amount. However, in some special operations, such as a caesarean operation, the fluid generated by the patient may include amniotic fluid, blood, other tissue fluids, etc., the error of the bleeding amount obtained by directly estimating the fluid amount is large, and the doctor cannot obtain a more accurate bleeding amount, which may mislead the correct evaluation and judgment of the doctor in the operation, and may increase the possibility of medical accidents.
Disclosure of Invention
The invention aims to provide a negative pressure suction system which can improve the accuracy of estimating the bleeding volume in the operation.
The present invention provides the following basic scheme:
a negative pressure aspiration system, comprising:
the suction device is used for sucking mixed liquid generated in the operation;
the storage device is used for storing the mixed liquid pumped by the pumping device;
further comprising:
the monitoring device is used for monitoring the volume of the mixed liquid in the storage device; also for measuring the intraoperative Hb value of the mixture; the weight of the blood-soaked gauze with blood gauze in the operation is collected;
the calculation module is used for acquiring a preoperative Hb value and calculating the pumping bleeding amount according to the volume, the intraoperative Hb value and the preoperative Hb value; the device is also used for acquiring the weight of the dry gauze and calculating the infiltration bleeding amount according to the weight of the dry gauze, the weight of the blood-soaked gauze and the preset unit blood-soaking amount; the amount of bleeding during aspiration and infiltration hemorrhaging were superimposed.
The beneficial effects of the basic scheme are as follows: the suction device and the storage device are arranged to suck and store the mixed liquid generated in the operation. The setting of monitoring devices can acquire the volume of mixed liquid, and the Hb value in the art of mixed liquid, and the soaked blood gauze weight of the gauze that takes the blood. The Hb value is the hemoglobin content of the liquid.
The calculation module is arranged to acquire the preoperative Hb value, and the aspiration bleeding amount is calculated based on the volume acquired by the monitoring module and the intraoperative Hb value, wherein the aspiration bleeding amount is the bleeding amount of the patient sucked by the suction device. The calculation module also obtains the weight of the dry gauze, and calculates the infiltration bleeding amount based on the weight of the blood-soaked gauze and the unit blood-soaking amount, wherein the infiltration bleeding amount is the bleeding amount of the patient absorbed by the gauze. The bleeding condition of the patient in the current operation can be known by superposing the aspiration bleeding amount and the infiltration bleeding amount, so that the accurate bleeding amount is obtained, a doctor in the operation is assisted to make correct evaluation and judgment, and the risk of medical accidents is reduced.
This scheme of adoption, Hb value and volume learn the hemoglobin total amount that patient runs off in the art through the art, and Hb before combining the monitoring before the art is worth knowing current pumping amount of bleeding. In the mixed liquid, only have hemoglobin in the blood, consequently learn the amount of bleeding of pumping through calculating the hemoglobin total amount, reject the interference of other liquid except blood to accurate aassessment is carried out the amount of bleeding of pumping, and then realizes the accurate aassessment to the amount of bleeding in the art, improves the rate of accuracy of estimating the amount of bleeding in the art.
Further, still include:
the data calling module is used for calling a preset infusion strategy and patient information after the operation is started;
and the strategy adjusting module is used for adjusting the called infusion strategy according to the patient information.
Has the advantages that: after the operation is started, the infusion strategy is called in advance, and when the infusion strategy is needed to be used in the operation process, the quick response can be realized. Meanwhile, the infusion strategy is adjusted according to the patient information, so that the infusion strategy is more in line with the infusion requirements of the patient, for example, the blood transfusion type and the blood transfusion mode in the infusion strategy are adjusted according to the blood type of the patient, and the infusion mode comprises plasma, whole blood, red cell suspension, component blood transfusion and the like.
Further, still include:
the first judgment module is used for judging whether the intraoperative hemorrhage amount reaches a preset transfusion condition in real time;
and the reminding module is used for sending out an infusion early warning when the intraoperative hemorrhage amount reaches a preset infusion condition.
Has the advantages that: in the operation process, whether need infuse the patient according to the real-time judgement of intraoperative hemorrhage volume, when intraoperative hemorrhage volume reaches the infusion condition of predetermineeing, represent the patient and need infuse, through sending the infusion early warning, in time remind the intraoperative doctor to infuse the operation to the patient.
Furthermore, the number of the infusion conditions is multiple, and different infusion strategies are mapped on different infusion conditions;
the reminding module is also used for calling and displaying the adjusted infusion strategy according to the achieved infusion condition when the intraoperative hemorrhage amount reaches the preset infusion condition.
Has the advantages that: there are many cases of intraoperative infusion, and different infusion strategies need to be implemented according to intraoperative hemorrhage amount in surgery, for example, intraoperative fluid infusion includes supplementing lens fluid, supplementing colloid fluid and supplementing blood, and different infusion strategies are called to display according to conditions of intraoperative hemorrhage amount.
By adopting the scheme, firstly, when a doctor forgets the condition suddenly, the transfusion operation can be timely executed through the displayed transfusion strategy, and secondly, when the doctor executes the transfusion operation, the transfusion operation can be compared with the displayed transfusion strategy, so that the influence on a patient caused by the error of the transfusion operation caused by the deviation in memory is avoided. By displaying the infusion strategy, the smooth operation of the operation is ensured and the risk of medical accidents is reduced.
Further, still include:
the data acquisition module is used for acquiring self-defined transfusion conditions uploaded before the operation;
the first judgment module is also used for replacing the preset transfusion condition according to the user-defined transfusion condition.
Has the advantages that: before an operation, the infusion condition preset by the first judgment module is set in a manual uploading mode, so that the infusion condition is more matched with the personal physical condition of a patient, and the risk of the corresponding patient in the operation is reduced.
Further, the suction device and the storage device are communicated through the suction pipe,
the monitoring device is also used for collecting the flow rate and the instantaneous Hb value of the mixed liquid in the suction pipe;
the calculation module is also used for acquiring effective flow speed time, and calculating another aspiration bleeding amount according to the effective flow speed time, the flow speed, the instantaneous Hb value and the preset cross section area of the aspiration tube.
Has the advantages that: calculating the volume of the mixed liquid by the effective flow speed time, the flow speed and the preset cross section area of the suction pipe, and calculating the amount of the sucked bleeding by combining the instantaneous Hb value. The amount of the aspirated bleeding is calculated in multiple modes, and when one of the aspirated bleeding amounts cannot be calculated, the other aspirated bleeding amount can be calculated, so that the normal operation of the operation is ensured. For example, when the mixed liquid leaks due to the breakage of the storage device and the volume of the mixed liquid cannot be collected, the amount of the aspirated bleeding cannot be calculated, and then the amount of the aspirated bleeding can be calculated in another mode.
Further, the calculation module is also used for calculating a short-time flow rate and a short-time Hb value within the statistical time according to the flow rate, the instantaneous Hb value and the preset statistical time;
further comprising:
the second judgment module is used for judging whether the short-time flow rate and the short-time Hb value reach dangerous conditions or not;
and the reminding module is used for sending out a danger early warning when the short-time flow rate and the short-time Hb value reach dangerous conditions.
Has the advantages that: and if the dangerous condition is the intraoperative heavy bleeding condition, judging whether the dangerous condition is met according to the short-time flow rate and the short-time Hb value of the mixed liquid, so as to judge whether the patient has the heavy bleeding condition. The short time velocity of flow is great, produces a large amount of mixed liquids in the representative patient short time, and short time Hb value is higher, then the amount of bleeding in the representative patient short time is great, and the patient appears the possibility of heavy bleeding very high this moment, consequently when short time velocity of flow and short time Hb value reach dangerous condition, judges that the patient appears the condition of heavy bleeding, sends dangerous early warning, in time reminds.
Further, still include:
the optimization module is used for respectively calculating the unit bleeding amount according to the two pumping bleeding amounts after operation to obtain a first unit bleeding amount and a second unit bleeding amount, and generating a unit compensation amount by comparing the first unit bleeding amount and the second unit bleeding amount;
and the compensation module is used for compensating the aspiration and bleeding amount according to the unit compensation amount in the next operation.
Has the advantages that: because the calculation modes of the aspirated bleeding amount are different, the values of the aspirated bleeding amount obtained correspondingly have differences, and in order to accurately evaluate the intraoperative bleeding amount of a patient, the unit bleeding amounts of the two aspirated bleeding amounts are calculated and compared to generate a unit compensation amount. The unit compensation amount is the compensation amount corresponding to the calculation mode with larger error, and in the subsequent operation, the calculation mode with larger error is compensated according to the unit compensation amount, so that the accuracy of calculating the aspiration bleeding amount is improved, and the intraoperative bleeding amount of the patient is accurately evaluated.
Drawings
FIG. 1 is a logic block diagram of an embodiment of a vacuum aspiration system of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
examples
A negative pressure suction system is shown in figure 1 and comprises a suction device, a storage device, a monitoring device, a calculation module, a storage module, a data acquisition module, a data calling module, a strategy adjusting module, a first judgment module, a reminding module and a second judgment module.
The suction device is used for sucking mixed liquid generated in the operation, the storage device is used for storing the mixed liquid sucked by the suction device, and the suction device and the storage device are communicated through the suction pipe.
The monitoring device is used for monitoring the volume of the mixed liquid in the storage device; also for measuring the intraoperative Hb value of the mixture; and is also used for collecting the weight of blood-soaked gauze with blood gauze in the operation. Specifically, the monitoring device comprises a micro liquid level meter, a hemoglobin analyzer and a weight detector, wherein the micro liquid level meter is arranged in the storage device and used for monitoring the height of the mixed liquid in the storage device and calculating the volume of the generated mixed liquid according to the height and the preset cross section area of the storage device; the hemoglobin meter is used for measuring the mixed liquid to obtain an intraoperative Hb value, namely the hemoglobin content of the mixed liquid; the weight detector is used for weighing the weight of the blood-soaked gauze with blood in the operation.
The calculation module is used for acquiring a preoperative Hb value, the preoperative Hb value is data obtained by performing hemoglobin content measurement on a patient before an operation, and the aspirated blood output is calculated according to the volume, the intraoperative Hb value and the preoperative Hb value; the device is also used for acquiring the weight of the dry gauze and calculating the infiltration bleeding amount according to the weight of the dry gauze, the weight of the blood-soaked gauze and the preset unit blood-soaking amount; the amount of bleeding during aspiration and infiltration hemorrhaging were superimposed. Specifically, the amount of aspirated bleeding was: volume-intraoperative Hb value/preoperative Hb value, infiltration bleeding volume: (weight of blood-soaked gauze-weight of dry gauze) unit blood-soaked volume, the intraoperative hemorrhage volume is: aspiration bleeding + infiltration bleeding.
The storage module is preset with infusion strategies and patient information, the first judgment module is preset with infusion conditions, the number of the infusion conditions is multiple, and different infusion strategies are mapped on different infusion conditions.
Before the operation, whether need carry out the custom to the infusion condition according to patient information judgement, it is special when the patient condition, need the custom, and data acquisition module is used for obtaining the custom infusion condition of uploading before the operation, and first judgement module is used for according to the predetermined infusion condition of custom infusion condition replacement.
The data calling module is used for calling a preset infusion strategy and patient information after the operation is started; the strategy adjusting module is used for adjusting the called infusion strategy according to the patient information. Specifically, the infusion strategy comprises balance fluid supplement, crystalloid fluid supplement and blood supplement, wherein the blood supplement comprises blood type and blood transfusion mode, the blood transfusion mode comprises plasma, whole blood, red cell suspension and component blood transfusion, the patient information comprises blood type, and the strategy adjusting module adjusts the blood type of the blood transfusion in the infusion strategy according to the blood type.
The first judgment module is used for judging whether the intraoperative hemorrhage amount reaches a preset transfusion condition in real time; the reminding module is used for sending out an infusion early warning when the intraoperative hemorrhage amount reaches a preset infusion condition, and calling and displaying an adjusted infusion strategy according to the reached infusion condition. When the infusion early warning is sent out, different infusion early warnings are sent out according to the achieved infusion conditions.
The plurality of infusion conditions are respectively a first infusion condition and a second infusion condition, the first infusion condition is whether the intraoperative hemorrhage amount is greater than MABL, the second infusion condition is whether the intraoperative hemorrhage amount is greater than 1/3MABL, and MABL is EBV (initial Hct-target Hct)/initial Hct, wherein MABL is the maximum allowable hemorrhage amount, EBV is the total blood volume, initial Hct is the preoperative hematocrit of the patient, and target Hct is the hematocrit expected to be reached by the patient. The first infusion conditions are mapped with an infusion strategy for replenishing blood, and the second infusion conditions are mapped with an infusion strategy for replenishing crystalloid fluid.
Specifically, the first judgment module judges whether the intraoperative hemorrhage volume reaches a first transfusion condition in real time, if so, sends out a first transfusion early warning, and calls a transfusion strategy for supplementing blood to display, if not, judges whether the intraoperative hemorrhage volume reaches a second transfusion condition, if so, sends out a second transfusion early warning, and calls a transfusion strategy for supplementing a crystalloid solution.
The monitoring device is also used for collecting the flow rate and the instantaneous Hb value of the mixed liquid in the suction pipe. Specifically, monitoring devices still includes the velocity of flow appearance, and the velocity of flow appearance is used for monitoring the velocity of flow of the intraductal mixed liquid of suction, and the haemoglobin appearance is still used for surveing the instantaneous Hb value of the mixed liquid in the suction tube.
The calculation module is also used for acquiring effective flow speed time, and calculating another aspiration bleeding amount according to the effective flow speed time, the flow speed, the instantaneous Hb value and the preset cross section area of the aspiration tube. To distinguish the aspirated bleeding volume, calculating the aspirated bleeding volume from the volume, intraoperative Hb value and preoperative Hb value is defined as a first aspirated bleeding volume, and calculating the other aspirated bleeding volume from the effective flow rate time, flow rate, instantaneous Hb value and a preset cross-sectional area of the aspiration tube is defined as a second aspirated bleeding volume. The second aspiration bleeding volume is: flow rate cross-sectional area effective flow time average of instantaneous Hb values.
The calculation module is further used for calculating a short-time flow rate and a short-time Hb value in the statistical time according to the flow rate, the instantaneous Hb value and the preset statistical time. Specifically, the flow rate and the instantaneous Hb value within the statistical time range are obtained, the average value of the flow rate is calculated to generate a short-time flow rate, and the average value of the instantaneous Hb value is calculated to generate a short-time Hb value.
The second judging module is used for judging whether the short-time flow rate and the short-time Hb value reach dangerous conditions or not; the reminding module is used for sending out danger early warning when the short-time flow rate and the short-time Hb value reach dangerous conditions. A critical condition is a condition where the patient may be at risk for surgery, such as a major intraoperative hemorrhage. Specifically, the dangerous conditions are a flow rate threshold and a Hb threshold corresponding to the risk condition, in this embodiment, the second judgment module judges whether the short-time flow rate reaches the flow rate threshold, and whether the short-time Hb value reaches the Hb threshold, if so, a danger early warning is sent out to remind a doctor in the operation that risks such as heavy bleeding may occur.
In other embodiments, an optimization module and a compensation module are also included.
The optimization module is used for calculating the unit bleeding amount according to the two pumping bleeding amounts after operation, obtaining a first unit bleeding amount and a second unit bleeding amount, and generating a unit compensation amount by comparing the first unit bleeding amount and the second unit bleeding amount. Specifically, calculating the unit bleeding volume according to the first aspiration bleeding volume and the second aspiration bleeding volume respectively after the operation to obtain a first unit bleeding volume and a second unit bleeding volume, and comparing the first unit bleeding volume with the second unit bleeding volume to generate a unit compensation volume. Differences in aspirated bleeding volume may result due to different measurement and calculation methods, and the unit compensation volume is calculated because the error needs to be reduced as much as possible during the operation.
The compensation module is used for compensating the aspiration and bleeding amount according to the unit compensation amount in the next operation, the compensated aspiration and bleeding amount is determined according to the measurement precision of two collection and calculation modes, the collection and calculation precision of the two aspiration and bleeding amounts are determined through an aspiration experiment, when the collection and calculation precision of the first aspiration and bleeding amount is higher, the second aspiration and bleeding amount is compensated according to the unit compensation amount in the next operation, and on the contrary, when the collection and calculation precision of the second aspiration and bleeding amount is higher, the first aspiration and bleeding amount is compensated according to the unit compensation amount in the next operation.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (8)
1. A negative pressure aspiration system, comprising:
the suction device is used for sucking mixed liquid generated in the operation;
the storage device is used for storing the mixed liquid pumped by the pumping device;
it is characterized by also comprising:
the monitoring device is used for monitoring the volume of the mixed liquid in the storage device; also for measuring the intraoperative Hb value of the mixture; the weight of the blood-soaked gauze with blood gauze in the operation is collected;
the calculation module is used for acquiring a preoperative Hb value and calculating the pumping bleeding amount according to the volume, the intraoperative Hb value and the preoperative Hb value; the device is also used for acquiring the weight of the dry gauze and calculating the infiltration bleeding amount according to the weight of the dry gauze, the weight of the blood-soaked gauze and the preset unit blood-soaking amount; the amount of bleeding during aspiration and infiltration hemorrhaging were superimposed.
2. The negative pressure suction system according to claim 1, further comprising:
the data calling module is used for calling a preset infusion strategy and patient information after the operation is started;
and the strategy adjusting module is used for adjusting the called infusion strategy according to the patient information.
3. The negative pressure aspiration system of claim 2, further comprising:
the first judgment module is used for judging whether the intraoperative hemorrhage amount reaches a preset transfusion condition in real time;
and the reminding module is used for sending out an infusion early warning when the intraoperative hemorrhage amount reaches a preset infusion condition.
4. A negative pressure suction system according to claim 3, wherein: the number of the infusion conditions is multiple, and different infusion strategies are mapped on different infusion conditions;
the reminding module is also used for calling and displaying the adjusted infusion strategy according to the achieved infusion condition when the intraoperative hemorrhage amount reaches the preset infusion condition.
5. The negative pressure suction system according to claim 3, further comprising:
the data acquisition module is used for acquiring self-defined transfusion conditions uploaded before the operation;
the first judgment module is also used for replacing the preset transfusion condition according to the user-defined transfusion condition.
6. A negative pressure suction system according to claim 1, wherein: the suction device and the storage device are communicated through a suction tube,
the monitoring device is also used for collecting the flow rate and the instantaneous Hb value of the mixed liquid in the suction pipe;
the calculation module is also used for acquiring effective flow speed time, and calculating another aspiration bleeding amount according to the effective flow speed time, the flow speed, the instantaneous Hb value and the preset cross section area of the aspiration tube.
7. The negative pressure suction system according to claim 6, wherein: the calculation module is also used for calculating a short-time flow rate and a short-time Hb value in the statistical time according to the flow rate, the instantaneous Hb value and the preset statistical time;
further comprising:
the second judgment module is used for judging whether the short-time flow rate and the short-time Hb value reach dangerous conditions or not;
and the reminding module is used for sending out a danger early warning when the short-time flow rate and the short-time Hb value reach dangerous conditions.
8. The negative pressure suction system according to claim 6, further comprising:
the optimization module is used for respectively calculating the unit bleeding amount according to the two pumping bleeding amounts after operation to obtain a first unit bleeding amount and a second unit bleeding amount, and generating a unit compensation amount by comparing the first unit bleeding amount and the second unit bleeding amount;
and the compensation module is used for compensating the aspiration and bleeding amount according to the unit compensation amount in the next operation.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114452459A (en) * | 2022-03-01 | 2022-05-10 | 上海璞慧医疗器械有限公司 | Thrombus aspiration catheter monitoring and early warning system |
| CN118177747A (en) * | 2024-05-15 | 2024-06-14 | 四川省肿瘤医院 | System for measuring bleeding amount in operation |
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| CN113384244B (en) | 2022-05-24 |
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