JP2003075436A - Bleeding volume measurement device - Google Patents

Abstract

(57) [Summary] [Problem] To enable accurate and easy measurement of the amount of bleeding during surgery.
An optical sensor 4, a gauze receiver 31, and an electronic balance 5 for gauze are provided, and the number N of gauze and the total weight Ws of the gauze are measured. The lower part is provided with a suction device 61 for storing the drainage sucked through the suction hose 61a and the electronic balance 7 for the suction bin, and measures the weight Wq of the suction drainage. In the upper part of the main body, there are provided an input panel 8 for inputting the weight Wa per unused gauze, the amount Wo of physiological saline administered, and the like, and a display panel 9 for displaying the total bleeding amount W obtained by calculation from the above data. Prepare. The calculation is based on the following formula. W = (Ws−N × Wa) + (Wq−Wo) Thus, the total bleeding amount, which is the sum of the amount of bleeding absorbed by the gauze and the amount of bleeding aspirated, can be automatically and accurately measured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bleeding amount measuring device capable of automatically measuring the amount of bleeding during surgery.

[0002]

2. Description of the Related Art Bleeding during surgery is classified into one that is absorbed by gauze and one that is mixed with drainage and sucked by a suction means. When a surgeon or anesthesiologist transfuses blood, it is required to correctly grasp and manage the amount of bleeding.

With respect to such a point, in the conventional technology,
Blood volume absorbed by gauze (hereinafter referred to as gauze blood loss)
And a means for measuring the amount of blood (hereinafter referred to as suction bleeding amount) mixed in the suction and drainage are individually considered. As a gauze bleeding amount measuring device, the weight of the tray and the weight and number of unused gauze sheets are registered in advance, and only the gauze bleeding amount is displayed by calculation when the used gauze is placed on the electronic balance. There is a device (Japanese Unexamined Patent Publication No. 1-92658) that automatically measures not only the amount of gauze bleeding but also the number of gauze sheets. A device that measures the weight of used gauze in the storage unit and calculates and displays the amount of gauze bleeding from the weight of unused gauze that has been registered in advance (Japanese Patent Laid-Open No. Sho 63).
-1430553).

As a method for measuring the amount of suction bleeding, it was calculated by subtracting the amount of physiological saline administered to the patient from the amount of drainage by suction. At this time, the amount of sucked and discharged liquid was measured by reading the scale with a glass or plastic suction bottle or a microvolume measuring container.

[0005]

However, all of the above-mentioned conventional methods measure only a part of the bleeding amount, and the most important information, the total bleeding amount, cannot be immediately obtained. In order to obtain the total bleeding volume, it was necessary to separately obtain the gauze bleeding volume and the suction bleeding volume and add them up, which was not quick. In particular, in the measurement of the amount of sucked and discharged liquid, the higher the accuracy, the more complicated the operation was, and the swiftness was markedly deteriorated. Further, since the blood waste is generated by being dispersed in the gauze and the suction bottle, the space efficiency in the operating room and the blood processing work efficiency are poor.

[0006] The present invention has been made in view of the above circumstances, and aims to achieve both swiftness and high precision of surgery by immediately measuring, calculating, and displaying the total bleeding amount, and centralized treatment of blood waste. The purpose is to improve the space efficiency and work efficiency of the operating room.

[0007]

According to a first aspect of the present invention, there is provided a device for measuring the amount of bleeding from a patient who is undergoing surgery, which stores a gauze inlet for introducing gauze that has absorbed blood and a gauze that has been introduced. Gauze storage section, gauze number determination means for determining the number of gauze to be inserted into the inlet, gauze weight measuring means for measuring the weight of the input gauze, and drainage storage section for storing suction drainage containing blood , Total bleeding that combines suctioned and drained amount measuring means for measuring the drained amount in this drainage storage part and the blood absorbed in the gauze and the blood in the sucked and drained liquid based on the determination and measurement by each of the above means A bleeding amount measuring device comprising: a bleeding amount calculating means for calculating an amount; a data input means for inputting data necessary for the calculation; and a display means for displaying the calculation result.

According to the present invention, the weight of the injected gauze and the amount of sucked and discharged liquid are automatically measured, a predetermined calculation is performed based on the measurement result and the input data, and the total bleeding amount as the calculation result can be easily calculated. It is possible to display quickly and accurately. In addition, by integrating the gauze storage part, drainage storage part, etc., it is possible to centralize the treatment of blood waste, and by sharing the power supply part, input panel, display panel, calculation part, etc., it is possible to downsize the device. It will be possible.

According to a second aspect of the present invention, means for calculating only the amount of blood absorbed in the gauze, means for calculating only the amount of blood in the suctioned and drained liquid, and the amount of blood absorbed in the gauze and the The bleeding amount measuring device according to claim 1, further comprising: a unit that individually displays the amount of blood in the suctioned and drained liquid.

According to the present invention, in addition to the total blood loss,
It is possible to easily, quickly and accurately display the gauze blood amount and the suction blood loss amount, which are the breakdowns thereof.

According to a third aspect of the present invention, a take-out means for taking out the gauze put in the gauze accommodating portion in a pull-out manner,
The bleeding amount measuring apparatus according to claim 1 or 2, further comprising: a take-out unit that takes out the stored suctioned and drained liquid in a pull-out manner.

According to the present invention, it is possible to safely and easily replace the gauze holder for storing the gauze and the suction bottle.

According to a fourth aspect of the present invention, the number-of-sheets discriminating means is
4. The method according to claim 1, wherein the signal from the sensor for detecting the input of gauze is counted.
The bleeding amount measuring device according to any one of 1.

According to the present invention, since the number of gauze can be automatically counted only by inserting the gauze into the gauze inlet, the number of gauze used in the surgery can be easily, quickly, accurately and
It is possible to measure safely.

According to a fifth aspect of the present invention, the suction and drainage amount measuring means measures the weight of the drainage liquid.
5. The bleeding amount measuring device according to claim 3.

According to the present invention, it is possible to easily and accurately perform automatic measurement of the amount of sucked and discharged liquid.

According to a sixth aspect of the present invention, the data input to the data input means includes the weight of an unused piece of gauze and the amount of administered saline solution, and the arithmetic means absorbs the gauze. The blood volume obtained is determined by the difference between the weight obtained by the gauze weight measuring means and the total weight of the gauze before use, and the total weight of the gauze before use is the weight of the unused gauze and the number of the gauze. Obtained by the product of the number of used gauze obtained by the discriminating means, the blood volume in the suction drainage is the difference between the liquid volume obtained by the suction drainage measuring means and the administered saline volume. Claims 1 to 5 that are required
The bleeding amount measuring device according to any one of 1.

According to the present invention, it is possible to easily, quickly and accurately calculate and display each bleeding amount.

[0019]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described with reference to FIGS. However, the present invention is not limited to the following embodiments.

FIG. 1 shows an embodiment of the present invention and is a sectional view of the apparatus. The main body 1 serves as the base of each component. On the upper part of the main body 1, a gauze slot 2, an input panel 8 as a data input means, and a display panel 9 as a display means.
Is provided. The gauze charging port 2 is provided with an optical sensor 4 for detecting the charging of gauze. Inside the main body 1, a gauze chamber 3 leading to the gauze inlet 2 is provided at the top.
The drainage chamber 6 is arranged in the lower part. The gauze chamber 3 includes a gauze receiver 31, which is a gauze storage unit, a gauze table 32, which is a gauze takeout unit, and a gauze chamber door 34.
Below the gauze chamber 3, an electronic balance 5 for gauze is provided as a gauze weight measuring means. The drainage chamber 6 includes a suction device 61 that is a drainage storage part, a suction device holder 62, a suction bottle base 63 that is a drainage removal means, and a drainage chamber door 65. A suction hose 61a is connected to the suction device 61. Below the drainage chamber 6, an electronic balance 7 for a suction bottle is provided as a suction and drainage amount measuring means.

The used gauze is put into the gauze inlet 2, the sensor 4 sequentially counts the amount of the gauze, and then stored in the gauze receiver 31. The gauze chamber door 34 can be opened and closed. The gauze electronic balance 5 measures the weights of the gauze receiver 31 and the gauze table 32. Zero adjustment is performed in advance when the gauze is not charged, and the total weight of the gauze stored in the gauze receiver 31 is measured.

The suction device 61 stores the drained liquid sucked from the patient via the suction hose 61a, and the suction device holder 62
And set on the suction bottle base 63 via. The suction device holder 62 allows the suction device 61 and the suction bottle base 63 to be attached and detached. The drainage chamber door 65 can be opened and closed. The electronic balance 7 for the suction bottle measures the weight of the suction device 61, the suction device holder 62, and the suction bottle base. Measure the weight. In the input panel 8, in addition to inputting the weight per unused gauze, the amount of physiological saline administered, etc., zero adjustment of each electronic balance and resetting of the display, correction of the number of used gauze used as necessary , And so on. The input method is by button operation. The display panel 9 displays the total bleeding amount, the gauze bleeding amount, the suction bleeding amount, the number of input gauze sheets, and the like, which are the calculation results.

FIG. 2 is an explanatory view showing a state in which the doors 34 and 65 of the apparatus are opened and the pullable portion is pulled out.

In the gauze chamber 3, it is possible to open the gauze chamber door 34, pull out the gauze table 32, and pull out the gauze receiver 31 to the outside of the main body. In the drainage chamber 6, the drainage chamber door 6
5 and pull out the suction bottle base 63,
It is possible to pull out from the body. Handles 33, 64
Is a handle for pulling out the gauze table 32 and the suction bottle table 63.

FIG. 3 is a block diagram showing the functional configuration of the arithmetic unit 10 provided in this apparatus. As shown in this figure, the input panel 8, the display panel 9, the optical sensor 4,
The gauze electronic balance 5 and the suction bottle electronic balance 7 are connected to the computing unit 10. The arithmetic unit 10 calculates the number of gauze sheets by counting the signals from the optical sensor 4 and the gauze number discriminating means 11, and the amount of gauze bleeding, the amount of suction bleeding, and the total bleeding including these bleeding. The quantity calculation means 12 is included.

FIG. 4 is a flowchart showing the main processing of the arithmetic unit of the apparatus.

In S1, the weight Wa per unused gauze sheet is input from the input panel. In S2, the value of the measurement flag F is input from the input panel. Here, F = 1 indicates that the measurement switch is ON, and F = 0 indicates that the measurement switch is OFF. In S3, the F value determination is performed. If this determination is YES, the process proceeds to S4 to start the measurement, and if NO, the process returns to S1 and waits for input. In S4, the automatic measurement results of the number N of inserted gauze pieces, the measured value Ws of the total weight of the gauze pieces, and the suctioned and drained liquid weight Wq are input. In S5, the weight Wo of physiological saline administered is input from the input panel. Saline is
Since it is usually administered multiple times during surgery, the dose is input from the input panel for each administration, and the integrated value is taken as the weight Wo of the administered physiological saline. In S6, calculation is performed from the input value from the input panel 8 and the input value from the automatic measurement result, and the gauze bleeding amount Wg, the suction bleeding amount Wv, the total bleeding amount W
To calculate. Here, the gauze bleeding amount Wg is the measured value Ws of the total weight of the gauze and the total weight of the gauze before use (the product of the number N of inserted gauze and the weight Wa per unused gauze)
Is the difference (Wg = Ws−N × Wa), and the suction bleeding volume Wv
Is the difference (Wv = Wq−Wo) between the weight Wq of the aspirate drainage and the weight Wo of the saline solution administered. The total blood loss W is a value obtained by adding the gauze blood loss Wg and the suction blood loss Wv (W = W
g + Wv). In S7, the obtained values are displayed on the display panel. Input the value of the measurement flag F in S8, and
At 9, the F value is determined. If this determination is YES, the process proceeds to S4 to continue the measurement, and if NO, the measurement is ended.

According to the apparatus of this embodiment as described above,
As long as the weight Wa per unused gauze and the weight Wo of the administered physiological saline are input, the number of inserted gauze N is counted, the total gauze weight Ws is measured, and the aspiration drainage weight
Measurement of Wq and calculation of total bleeding amount W based on these data are automatically performed, and the result is displayed on the display panel 9, so that the surgeon can easily and quickly monitor the bleeding status of the patient. You can know

In addition, the gauze bleeding amount Wg can be accurately obtained from the total weight of gauze Ws measured by the gauze electronic balance 5, the number N of inserted gauze and the weight Wa per unused gauze, and the electronic for suction bottles can be obtained. The suction bleeding amount Wv is accurately obtained from the suction drainage weight Wq measured by the balance 7 and the weight Wo of the administered physiological saline, and the total bleeding amount W is calculated with very high accuracy from these.

Other embodiments will be shown below.

In the above embodiment, the gauze chamber 3 is arranged above the drainage chamber 6, but it is arranged horizontally horizontally, or the gauze inlet 2 is arranged laterally and the top and bottom are interchanged. Is possible. However, according to the above-described embodiment, by arranging the input port 2 on the upper side, the input area can be increased, and by arranging the gauze chamber 3 and the drainage chamber 6 on the upper and lower sides, the occupation area of the operating room can be reduced.

As a means for discriminating the number N of gauze input,
The infrared sensor is not limited to the optical sensor 4 and may be another infrared sensor, and the automatic counting is not limited to the direct input to the input panel 8. If you take an automatic measurement method with a sensor,
The measurement speed and accuracy are improved, and non-contact measurement prevents infection.

Although the amount of sucked and discharged liquid is measured by weight in the above embodiment, it is also possible to measure the liquid surface height by using a sensor or the like and measure the volume. However, according to the above embodiment, the amount of drainage can be easily measured by weight measurement.

A mechanical weight measuring device such as a spring balance may be used in place of the electronic balance 5 for gauze and the electronic balance 7 for suction bottle, but in order to realize high accuracy, the electronic balance as in the above embodiment is used. It is desirable to use a balance.

It is desirable that the suction holder 62 be equipped with a general-purpose suction device because it is economical and easy to operate.

The input method from the input panel 8 may be switch input, touch panel input, etc., in addition to the button operation of the above embodiment.

As a method of inputting the weight Wo of the administered physiological saline, it is possible to input it as an initial value when the dose has been determined in advance. Since it is sequentially added as needed, it is desirable to sequentially input during surgery as in the above embodiment.

It is also possible to dispose the input section and the display section on the same panel. The above-described embodiment is desirable because the operability of the input panel 8 and the visibility of the display panel 9 can be compatible with each other.

The displayed contents are the individual gauze blood loss W.
Although g and the suction bleeding amount Wv can be omitted, the above embodiment is preferable in that more detailed information can be provided.

In the above embodiment, the display unit is weight, but it is also possible to display the volume by dividing by the specific gravity of blood.

When the drawer structure as in the above embodiment is not adopted, the gauze table 32 can be omitted and the suction bottle table 63 can be fixed, but for the purpose of improving work efficiency and safety. The above embodiment is desirable.

The gauze chamber door 34 and the drainage chamber door 65 may be omitted, but the above embodiment is preferable in order to prevent foreign matter from entering and to improve the appearance.

When the number N of gauze sheets is not automatically measured,
The input panel 8 is used to input the number of gauze sheets N in the arithmetic unit. Further, it is also possible to set a subroutine for correcting the number N of gauze sheets from the input panel 8 if necessary.

[0044]

As is apparent from the above description,
INDUSTRIAL APPLICABILITY The blood loss measurement device of the present invention has an advantage of providing both swiftness and high precision of surgery by measuring the total blood loss of a patient during surgery easily, quickly and accurately. Also,
By integrating and downsizing the device, there is an advantage that it is possible to improve the space efficiency of the operating room and the efficiency of processing blood waste. Furthermore, by displaying the gauze bleeding volume and suction bleeding volume separately, more detailed bleeding information is provided, workability and safety are improved by pulling out and replacing the gauze and aspirator, and the number of gauze sheets is automatically monitored. It has the advantage that measurement can provide easier, faster, accurate and safer measurements.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a device according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a state in which a pullable portion of the device is pulled out.

FIG. 3 is a block diagram showing a functional configuration of a calculation unit provided in the same apparatus.

FIG. 4 is a flowchart showing a main part of a calculation unit of the apparatus.

[Explanation of symbols]

1 Main body 2 Gauze slot 3 Gauze room 31 Gauze tray 32 Gauze stand 34 Gauze compartment door 4 Optical sensor 5 Electronic balance for gauze 6 Drainage chamber 61 Aspirator 62 suction holder 63 suction bottle base 65 Drainage chamber door 7 Electronic balance for suction bottle 8 Input panel 9 Display panel

Claims (6)

[Claims] 1. A device for measuring the amount of bleeding from a patient undergoing surgery, comprising a gauze inlet for introducing gauze that has absorbed blood, a gauze container for storing the injected gauze, and gauze for the inlet. The gauze number discriminating means for discriminating the number of input gauze, the gauze weight measuring means for measuring the weight of the input gauze, the drainage storage part for storing suction drainage liquid containing blood, and the drainage amount in this drainage storage part Aspiration / drainage amount measuring means for measuring, discrimination by each of the above means, bleeding amount computing means for computing total bleeding amount of blood absorbed in gauze and blood in aspiration / drainage based on the measurement, and A bleeding amount measuring device, comprising: a data input unit for inputting data required for calculation; and a display unit for displaying the calculation result. 2. A means for calculating only the amount of blood absorbed by the gauze, a means for calculating only the amount of blood in the aspirated drainage, and a means for calculating the amount of blood absorbed by the gauze and the aspirated drainage. The bleeding amount measuring apparatus according to claim 1, further comprising: a unit that individually displays the blood amount. 3. The bleeding amount measuring device according to claim 1, wherein the gauze storage portion and the drainage storage portion can be drawn out. 4. The bleeding amount measuring apparatus according to claim 1, wherein the gauze number discriminating means counts a signal from a sensor for detecting the introduction of gauze. . 5. The bleeding amount measuring device according to claim 1, wherein the suction drainage amount measuring means measures the weight of the drainage. 6. The data input to the data input means includes the weight of an unused piece of gauze and the amount of physiological saline administered, and the amount of blood absorbed by the gauze in the calculating means is Determined by the difference between the weight obtained by the gauze weight measuring means and the total weight of the gauze before use, the total weight of the gauze before use is obtained by the weight of the unused gauze and the means for determining the number of gauze sheets. It is obtained by multiplying the number of gauze used and the amount of blood in the aspiration / drainage liquid is obtained by the difference between the amount of liquid obtained by the aspiration / drainage amount measuring means and the amount of the administered saline solution. Claims 1 to 5 characterized in that
The bleeding amount measuring device according to any one of 1.