CN110960737A - Light-sensitive blood recovery drainage device for cesarean section - Google Patents
Light-sensitive blood recovery drainage device for cesarean section Download PDFInfo
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- CN110960737A CN110960737A CN201911190958.0A CN201911190958A CN110960737A CN 110960737 A CN110960737 A CN 110960737A CN 201911190958 A CN201911190958 A CN 201911190958A CN 110960737 A CN110960737 A CN 110960737A
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- A61M1/0023—
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- 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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- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
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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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
- A61M1/734—Visual indicating means for flow
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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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates
Abstract
The invention discloses a light-sensitive blood recovery negative pressure drainage device for cesarean section, which comprises a drainage tube, a recovery container, a negative pressure tube and a detection system, wherein the drainage tube and the negative pressure tube are connected with the recovery container, the drainage tube is used for sucking mixed liquid of blood and amniotic fluid into the recovery container, the recovery container is in a negative pressure state through the negative pressure tube, the detection system comprises a light-emitting element and a photosensitive element which are oppositely arranged on the outer wall of the recovery container, light emitted by the light-emitting element can pass through the recovery container to reach the corresponding photosensitive element, the photosensitive element is connected with a control unit, and the control unit calculates the blood output of a lying-in woman in the current recovery container according to the light intensity detected by the photosensitive element. The invention can accurately measure the bleeding of the lying-in woman.
Description
Technical Field
The invention relates to a medical appliance, in particular to a photosensitive blood recovery drainage device for cesarean section.
Background
The negative pressure drainage device generally comprises a drainage port, a negative pressure port, a catheter connector, an overflow prevention valve and a recovery cavity, wherein the drainage port, the negative pressure port, the catheter connector and the overflow prevention valve are all connected with the recovery cavity, the negative pressure is kept in the recovery cavity, and the liquid to be drained is sucked into the recovery cavity through the drainage port. The negative pressure drainage device has wide application in clinic, for example, in cesarean section, the negative pressure drainage device is used for sucking out the mixed liquid of amniotic fluid and blood in the process of delivery.
The current negative pressure drainage device has the following problems: in cesarean section, doctors need to pay attention to the blood loss condition of the lying-in women all the time so as to carry out blood transfusion on the lying-in women in time when the lying-in women bleed too much, but a large amount of amniotic fluid is mixed in the cesarean section, which causes troubles for correctly evaluating the bleeding amount. At present, doctors usually estimate the amount of bleeding according to the color of mixed liquid by experience, and because the doctor experiences different, the estimation accuracy is greatly different, so that the bleeding amount of a puerpera cannot be accurately judged.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a photosensitive blood recovery drainage device for cesarean section.
The utility model provides a cut open palace delivery with photosensitive blood and retrieve drainage ware, includes drainage tube, recovery container, negative pressure pipe and detecting system, drainage tube and negative pressure pipe all link to each other with recovery container, and the drainage tube is arranged in inhaling the recovery container with the mixed liquid of blood and amniotic fluid, make through the negative pressure pipe be in the negative pressure state among the recovery container, detecting system includes relative light-emitting element and the photosensitive element who sets up on the recovery container outer wall, the light energy that light-emitting element sent can pass recovery container reachs the photosensitive element that corresponds, photosensitive element links to each other with the control unit, the control unit calculates lying-in woman's hemorrhage volume in the current recovery container according to the light intensity that photosensitive element detected.
Optionally, the control unit includes a plurality of current sensors, each current sensor is connected in series with each photosensitive element, the output ends of the current sensors are further connected with the volume measurement module and the blood content measurement module, respectively, and the output ends of the volume measurement module and the blood content measurement module are connected with the bleeding volume calculation module; the bleeding amount calculation module is also respectively connected with the alarm module and the display module; the volume measuring module is used for judging the volume of the mixed liquid in the current recovery container according to the current value flowing through the photosensitive element; a plurality of groups of light-emitting elements and photosensitive elements are oppositely arranged on the outer wall of the recovery container, the arrangement position of the photosensitive elements corresponds to the volume of the recovery container, and the volume corresponding to the photosensitive elements with reduced current values is taken as the volume value of the mixed liquid in the current recovery container by the volume measuring module; the blood content measuring module is used for measuring the content ratio of blood in the current mixed liquid according to the current value flowing through the photosensitive element; the blood volume measuring device also comprises a storage module connected with the blood volume measuring module, and the storage module is pre-stored with a current value and blood volume ratio corresponding table of each photosensitive element; the blood content measuring module obtains a blood content ratio value corresponding to the current value flowing through the photosensitive element through table lookup; the blood content measuring module searches for blood content ratio values corresponding to two pre-stored current values which are most similar to the current measured current value, then calculates the average value of the two blood content ratio values, and takes the average value as the current blood content ratio value; the blood content measuring module obtains different blood content ratio values measured by the current photosensitive elements through table lookup according to the current values of the current photosensitive elements, then judges non-zero items in the blood content ratio values, and calculates the average value of the non-zero items to be used as the current blood content ratio value.
The invention has the beneficial effects that: the negative pressure drainage device adopts a photosensitive detection technology, and can accurately obtain the blood content in the mixed liquid, thereby accurately judging the bleeding volume of the puerpera and providing objective basis for the bleeding volume for medical staff.
Drawings
FIG. 1 is a schematic view of the construction of a flow diverter of the present invention;
FIG. 2 is a schematic diagram of the construction of the detection system;
FIG. 3 is a schematic diagram of the structure of the control unit;
FIG. 4 is a blood content correspondence table;
fig. 5 is a schematic diagram of the operation of the detection system.
Detailed Description
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention when taken in conjunction with the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not intended to be to scale, emphasis instead being placed upon illustrating the principles of the invention.
The invention discloses a photosensitive blood recovery drainage device for cesarean section, which is mainly used for collecting intraoperative uterine bleeding and amniotic fluid and accurately metering blood during cesarean section of obstetrical department.
Referring to fig. 1 to 2, the drainage device mainly comprises a drainage tube 1, a recovery container 2 (such as a bottle or a bag), a negative pressure tube 3, a detection system 4 and a float valve 5. The drainage tube 1 and the negative pressure tube 3 are both connected with the recovery container 2, wherein the float valve 5 can be arranged at the upper part in the recovery container 2, the drainage tube 1 and the negative pressure tube 3 penetrate through the sealing cover of the recovery container 2 to be communicated with the recovery container 2, the float valve 5 is connected at one end of the negative pressure tube 3, and the other end of the negative pressure tube 3 can be connected with a negative pressure interface in an operating room. The drainage tube 1 is used for sucking the mixed liquid of blood and amniotic fluid into a recovery container 2, which may be a closed container made of transparent material (such as plastic) and has a total volume of 5000 ml. The recovery vessel 2 is placed under negative pressure by the negative pressure tube 3, so that blood and amniotic fluid can be sucked into the recovery vessel 2. When the recovery vessel 2 is filled with the sucked blood and amniotic fluid, the float valve 5 is closed to close the negative pressure tube 3, and the suction of the mixed solution is stopped, at which time the recovery vessel 2 needs to be replaced.
Referring to fig. 2, the detection system 4 includes a light emitting device 4.3 and a photosensitive device 4.2 disposed on the outer wall of the recycling container 2, and a plurality of light emitting devices 4.3 and photosensitive devices 4.2 may be disposed, where each light emitting device 4.3 is disposed opposite to the photosensitive device 4.2, that is, the light emitted by the light emitting device 4.3 can pass through the recycling container 2 to reach the corresponding photosensitive device 4.2. The light emitting element 4.3 is preferably a laser element, for example, it may be an infrared light source, and the photosensitive element 4.2 may be a photodiode or other element capable of sensing the intensity of light. The light emitting element 4.3 and the light sensitive element 4.2 are both connected to the control unit 4.1, and the control unit 4.1 drives the light emitting element 4.3 to emit light.
As shown in fig. 3, the control unit 4.1 includes a plurality of current sensors, such as the first current sensor, the second current sensor to the nth current sensor shown in fig. 3, which are respectively connected in series with the photosensitive elements 4.2, the output ends of the current sensors are also respectively connected with the volume measuring module and the blood content measuring module, the blood content measuring module is connected with the storage module, the output ends of the volume measuring module and the blood content measuring module are connected with the bleeding amount calculating module, and the bleeding amount calculating module is also respectively connected with the alarm module and the display module.
The volume measuring module can detect the volume of the mixed liquid in the current recovery container 2, and the details thereof will be further described below. In the present invention, the light sensitive element 4.2 may be a photodiode, the conductivity of which is proportional to the light intensity, i.e., the more intense the light, the higher the conductivity, i.e., the lower the resistance of the photodiode, the weaker the light the lower the conductivity, that is, the larger the resistance value of the photodiode is, when there is no mixed liquid in the recovery container 2, the light emitted from the light emitting element 4.3 can be received by the light sensitive element 4.2, at this time, the conduction degree of the photodiode is the largest, the current flowing through the photodiode is also the largest, when the mixed liquid flows into the recovery container 2, the light emitted by the light-emitting element 4.3 is shielded by the mixed liquid, the light intensity reaching the photosensitive element 4.2 is weakened, the conduction degree of the photosensitive diode is reduced, the current flowing through the photosensitive diode is also reduced, by detecting the magnitude of the current flowing through the photodiode, the volume of the mixed liquid in the recovery container 2 can be determined.
Specifically, the plurality of photosensors 4.2 may be attached to the outer wall of the recovery container 2 at positions corresponding to the volume of the recovery container 2, for example, a first photosensor may be attached to a position having a volume of 100ml, a second photosensor may be attached to a position having a volume of 200ml, and the corresponding nth photosensor may be attached to a position having a volume of 5000 ml. Referring to fig. 5, for example, when the liquid level of the mixed liquid in the recovery container 2 exceeds the second photosensitive element, the resistance of the first and second photosensitive elements increases, the current flowing through the first and second photosensitive elements decreases, the current flowing through the other photosensitive elements does not change, the current value flowing through each photosensitive element 4.2 is detected by the corresponding current sensor and sent to the volume measurement module, and after the volume measurement module receives the detected current value, the volume of the mixed liquid in the recovery container 2 can be determined by determining which photosensitive element has decreased. For example, in FIG. 5, when a decrease in the current of the second photosensor is detected, the volume measuring module determines that the volume of the mixed liquid in the recovery tank 2 is 200ml at this time.
And the blood content measuring module is used for measuring the content ratio of the blood in the current mixed liquid. The mixed liquid sucked by the drainage tube 1 in the cesarean section process is mainly blood and amniotic fluid, when the blood content is high (the occupation ratio is high), the light transmission of the mixed liquid is poor, more light emitted by the light-emitting element 4.3 is shielded by the mixed liquid, and the light intensity reaching the photosensitive element 4.2 is weakened; on the contrary, when the blood content is low (the proportion is low), the content of the amniotic fluid in the mixed liquid is high, and the light transmittance of the mixed liquid is relatively good because the amniotic fluid is a transparent liquid, so that the light emitted by the light-emitting element 4.3 is shielded by the mixed liquid less, and the light intensity reaching the photosensitive element 4.2 is relatively strong. The conduction degree of the light sensor 4.2 is related to (for example, proportional or inverse proportional to) the light intensity, so that the content ratio of the blood in the present mixed solution can be detected by measuring the current value flowing through the light sensor 4.2.
Specifically, as shown in fig. 4, the storage module prestores a corresponding table of the ratio of the current value of each photosensitive element to the blood content, taking the table shown in fig. 4 as an example, for the first photosensitive element, when the blood content in the mixed solution is small, the conduction degree of the photosensitive element is large, the current flowing through the photosensitive element is large, when the current of 10mA in the table indicates that the blood content in the mixed solution is 10%, the corresponding 9mA corresponds to 25%, and the like, the second photosensitive element to the nth photosensitive element are also calibrated correspondingly, so as to form the table shown in fig. 4, and the table is stored in the storage module.
Referring to fig. 5, at this time, the first photosensitive element and the second photosensitive element are shielded, which means that the first current sensor or the second current sensor can measure the current flowing through the first photosensitive element and the second photosensitive element respectively, and the blood content ratio corresponding to the measured current value is searched from the table shown in fig. 4, so that the blood content ratio in the present mixed solution can be measured. For example, if the current value measured by the first current sensor is 7mA, the blood content ratio at this time can be obtained as 40% by looking up a table, or if the current value measured by the second current sensor is 8mA, the blood content ratio at this time can be obtained as 25 by looking up a table.
And the bleeding volume calculation module receives the volume value of the mixed liquid measured by the volume measurement module and the blood content ratio measured by the blood content measurement module, and calculates the bleeding volume in the delivery process according to the volume value of the mixed liquid and the blood content ratio. For example, if the volume value of the mixture is measured as V and the blood content ratio is measured as a%, then: the bleeding amount is V Pilosellus A%, so that the bleeding amount of puerpera can be accurately obtained. Furthermore, the bleeding amount calculation module sends the calculated bleeding amount to the display module and the alarm module respectively, the current bleeding amount value is displayed through the display module, and when the bleeding amount is larger than a set threshold value, the alarm module gives an alarm to prompt medical staff.
Example 2
This embodiment focuses on differences from embodiment 1, and the same parts are not described again. In the embodiment 1, the storage module needs to store the table shown in fig. 4, which is limited by factors such as storage capacity, and the table does not store all the corresponding relationships between the current values and the blood content ratios, so that one of the problems is that the corresponding blood content ratios cannot be obtained by looking up the table occasionally, for example, for the first photosensitive element, when the current value measured by the first current sensor is 8.5mA, the corresponding blood content ratio cannot be obtained.
For the above problem, in this embodiment, the interpolation is used to compensate, specifically, the blood content measurement module searches for blood content ratio values corresponding to two pre-stored current values that are closest to the current measured current value, and then calculates an average value of the two blood content ratio values, and uses the average value as the current blood content ratio value. Wherein one of the two most similar pre-stored current values is higher than the currently measured current value and the other is lower than the currently measured current value.
For example, when the current value measured by the first current sensor is 8.5mA, the blood content measurement module searches the table in fig. 4, obtains two most similar pre-stored current values, namely 9mA (higher than 8.5) and 8mA (lower than 8.5), and obtains blood content ratio values corresponding to 9mA and 8mA as 25% and 30%, respectively, and calculates that the average value of the two blood content ratio values is 27.5% and takes the average value of 27.5% as the current blood content ratio value.
Example 3
Due to the different characteristics of different photosensors, even though there are differences in their respective performance between photosensors in the same batch, this results in different measurements being obtained with different photosensors for the same mixed liquor, which sometimes can be very large. Taking the example in embodiment 1 as an example, if the current value measured by the first current sensor is 7mA, the blood content ratio at this time can be obtained as 40% by looking up the table, and if the current value measured by the second current sensor is 8mA, the blood content ratio at this time can be obtained as 25 by looking up the table. The present embodiment obtains an optimum measurement value by comprehensively considering the measurement values of the respective photosensors.
Specifically, referring to fig. 5, the blood content measurement module obtains different blood content ratio values measured by the current photosensitive elements through table lookup according to the current values of the current photosensitive elements, then determines non-zero items in the blood content ratio values, and calculates an average value of the non-zero items as the current blood content ratio value. For example, if the current value measured by the first current sensor is 7mA, the blood content ratio at this time can be obtained as 40%, if the current value measured by the second current sensor is 8mA, if the current value measured by the third current sensor is 15mA, if the current value measured by the nth current sensor is 15mA, then the blood content ratio at this time can be obtained as 0%, … … …, if the current value measured by the first current sensor is 7mA, then the current value measured by the second current sensor is 25%, if the current value measured by the third current sensor is 15mA, if the current value measured by the first current sensor is 0mA, then the current value measured by the nth current sensor is 0 mA. At this time, the non-zero items in the blood content ratio are 40% and 25% (namely, it is explained that the liquid level of the mixed liquid in the recovery container 2.3 exceeds the second photosensitive element at this time, and does not exceed the third photosensitive element), then the blood content measurement module calculates the average value of each non-zero item to be 32.5%, and 32.5% is taken as the current blood content ratio, so that a more accurate blood content ratio can be obtained, and the measurement accuracy is improved.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a cut open palace and retrieve drainage ware with photosensitive blood, a serial communication port, including drainage tube, recovery container, negative pressure pipe and detecting system, drainage tube and negative pressure pipe all link to each other with recovery container, and the drainage tube is arranged in inhaling the recovery container with the mixed liquid of blood and amniotic fluid, through negative pressure pipe makes and is in negative pressure state in the recovery container, detecting system includes relative light-emitting element and the photosensitive element who sets up on the recovery container outer wall, the light energy that light-emitting element sent can pass recovery container reachs the photosensitive element who corresponds, photosensitive element links to each other with the control unit, the control unit calculates lying-in woman's hemorrhage volume in the current recovery container according to the light intensity that photosensitive element detected.
2. The negative pressure flow diverter of claim 1, wherein the control unit comprises a plurality of current sensors, each current sensor is connected in series with each photosensitive element, the output ends of the current sensors are further connected with the volume measuring module and the blood content measuring module, respectively, and the output ends of the volume measuring module and the blood content measuring module are connected with the bleeding amount calculating module.
3. The negative pressure flow diverter of claim 2, wherein the bleeding amount calculating module is further connected with an alarm module and a display module respectively.
4. The negative pressure flow diverter of claim 2, wherein the volume measuring module determines the volume of the mixed liquid in the current recovery container according to the value of the current flowing through the photosensitive element.
5. The negative pressure flow diverter according to claim 4, wherein a plurality of sets of light emitting elements and light sensitive elements are oppositely arranged on the outer wall of the recovery container, the arrangement position of the light sensitive elements corresponds to the volume of the recovery container, and the volume measuring module takes the volume corresponding to the light sensitive element with the reduced current value as the volume value of the mixed liquid in the current recovery container.
6. The negative pressure flow diverter of claim 2, wherein the blood content measuring module is configured to measure the blood content ratio of the present mixed solution according to the value of the current flowing through the photosensitive element.
7. The negative pressure flow diverter according to claim 6, further comprising a storage module connected to the blood content measuring module, wherein the storage module is pre-stored with a current value-blood content ratio correspondence table of each photosensitive element.
8. The negative pressure flow diverter of claim 7, wherein the blood content measuring module obtains the blood content ratio value corresponding to the current value flowing through the light sensitive element by looking up a table.
9. The negative pressure flow diverter of claim 8, wherein the blood content measuring module searches for blood content ratio values corresponding to two pre-stored current values that are the closest to the current value currently measured, and then calculates an average value of the two blood content ratio values, and the average value is used as the current blood content ratio value.
10. The negative pressure flow diverter of claim 8, wherein the blood content measuring module obtains different blood content ratio values measured by the light-sensitive elements according to the current values of the light-sensitive elements by looking up a table, then determines non-zero items in the blood content ratio values, and calculates the average value of the non-zero items as the current blood content ratio value.
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| CN201911190958.0A CN110960737A (en) | 2019-11-28 | 2019-11-28 | Light-sensitive blood recovery drainage device for cesarean section |
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| CN201911190958.0A CN110960737A (en) | 2019-11-28 | 2019-11-28 | Light-sensitive blood recovery drainage device for cesarean section |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113288594A (en) * | 2021-06-18 | 2021-08-24 | 上海市第一妇婴保健院 | Pregnant and lying-in woman vaginal bleeding volume intelligent monitoring panty-shape diapers |
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