JP2577828Y2 - Measuring device for used medical materials - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measuring apparatus for a used medical material suitable for measuring the number of used medical materials (gauze) and the amount of bleeding sucked into the medical material.

[0002]

2. Description of the Related Art Conventionally, gauze (medical material) is applied to an affected area to stop bleeding during surgery, and these gauze are eventually taken out of the body, but the problem of leaving gauze in the body is solved. In addition to counting the number of gauze to be used prepared in advance and counting the number of gauze removed outside the body during surgery, the total number of gauze removed outside the body and the number of unused gauze Based on whether the number matches the planned number of sheets prepared in advance,
Checking for gauze left in the body. In this case, when checking the number of used gauze used for the operation, the used gauze taken out of the body is attached to a number of numbered hooks each having a hook attached to a sequentially numbered plate material. The number of gauze pieces is counted and checked by sequentially hooking them one by one.

On the other hand, since there is a problem if the amount of bleeding during the operation is too large, the amount of blood (blood volume) sucked into the used gauze while checking the number of the used gauze described above.
Is measured to determine the amount of bleeding (bleeding volume). In this case, when confirming the amount of bleeding, the weight of the used gauze is measured by, for example, a weighing scale, and the weight (tare) of the unused gauze that has been measured in advance is subtracted from the measured weight. The sucked bleeding weight is calculated, and the bleeding weight / blood specific gravity (1.06) is calculated based on the bleeding weight to calculate the bleeding volume sucked into the gauze.
Then, after confirming the number of used gauze and the amount of bleeding, the used gauze is put into a predetermined collection container, and a predetermined processing of the used gauze is performed.

[0004] By the way, a device for measuring the number of used gauze and the amount of bleeding has been developed. However, in this type of measuring device, when the used gauze is thrown in from the input portion of the device, it falls. After the used gauze coming through is detected by, for example, an optical sensor disposed inside the device,
When dropped into a collection box that can be loaded and unloaded into the main body of the apparatus and placed on a weighing table at the bottom of the collection box, its weight is measured. Thus, the number of used gauze is counted based on the detection result of the sensor, and the amount of bleeding is measured based on the weight difference between the used gauze and the used gauze by the weighing platform.

[0005]

However, the above-mentioned prior art has the following problems. When the used gauze is put into the input section of the measuring device, blood is adsorbed on the used gauze, so that the used gauze is collected without falling smoothly to the weighing table at the bottom of the collection box. There were inconveniences such as attachment to the wall surface of the hopper / guide cylinder above the box, or entry into the gap between the collection box and the apparatus body without falling into the collection box. When the above-mentioned inconvenience occurs, there is a problem that the number of used gauze cannot be accurately counted, and the blood sucked into the used gauze, that is, the amount of bleeding cannot be accurately measured. Was.

[0006] The present invention solves the above-mentioned problems, and an apparatus for measuring used medical materials (gauze) which can accurately measure the number of used medical materials (gauze) and the amount of bleeding sucked into the medical materials. For the purpose of providing.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a used medical material measuring apparatus configured to measure and display the number of used medical materials and the amount of liquid adsorbed on the used medical materials. An input section into which the medical material is input, a detecting unit for detecting the passage of the used medical material falling in the input section, and a collecting section in which the used medical material falling in the input section is collected. Measuring means for measuring the weight of the used medical material dropped into the collection section, setting means for setting the weight of the used medical material, counting means for counting the number of used medical materials, Number display means for displaying the number of medical materials, liquid amount display means for displaying the amount of adsorbed liquid of used medical materials, and alarm means for alarming an abnormal state in which used medical materials do not pass normally in the charging section. , The detecting means Thus over time continues to detect that the used medical material exists to determine whether or exceeds a predetermined time less than the predetermined time, in said metering means from the time the spent medical material is detected by said detecting means within a predetermined time It determines whether or not the detected weight increase, used medical products
If it is determined that the time for continuously detecting is over a predetermined time,
Alternatively, the used medical material is detected by the detecting means.
The weight increase is detected within the specified time from the time when
If not, an alarm is issued from the alarm means.
If the time period determining means determines that the time for continuously detecting the used medical material is less than a predetermined time, the counting means counts the number of the used medical materials, and the number display means the integrated display makes heavy determining means to, by the timing determining means by the determined used a medical material is detected weight increase in the metering means from the time it is detected by said detecting means within a predetermined time and said metering means When the weight increase of the used medical material is measured to be equal to or more than the predetermined weight, a difference between the measured weight of the used medical material by the measuring means and the set weight of the used medical material by the setting means is calculated, and the calculation is performed. And a liquid amount measuring means for displaying the weight as an adsorbed liquid amount on the liquid amount display means.

[0008]

According to the present invention, after the weight of the pre-use medical material used for the medical treatment is set and input from the setting means, when the used medical material is generated with the medical treatment, the used medical material is transferred to the apparatus. Into the input section of The used medical material thrown into the throwing section is dropped by the detecting means when falling through the throwing section, and then falls into the collecting section to be collected. At this time, the time limit determining means, when it is determined that the time for continuously detecting the used medical material is longer than the predetermined time, determines that an abnormality such as the used medical material is clogged or caught in the input unit, for example, An alarm is issued from the alarm means. Further, even when the weight increase is not detected by the weighing means within a predetermined time from the time when the used medical material is detected by the detection means,
It is determined that an abnormality has occurred, such as the used medical material falling into the gap between the storage box and the apparatus main body without dropping into the storage box, for example, and an alarm is issued from the alarm unit. On the other hand, when the time judging means determines that the time for continuing to detect the used medical material is less than the predetermined time, the heavy object determining means causes the counting means to count the number of the used medical materials and displays the number on the number displaying means. The total number of used medical materials is displayed. In addition, the liquid amount measuring unit is configured to detect the weight increase by the measuring unit within a predetermined time after the used medical material is detected by the detecting unit. When
The difference between the weight measured by the weighing means and the weight set by the setting means is determined, and the difference is determined as the amount of liquid adsorbed on the medical material before use, and is displayed on the liquid amount display means. This makes it possible to accurately count only the number of used medical materials collected by the collection unit, and to accurately measure the amount of blood sucked into the used medical materials, that is, the amount of bleeding.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are configuration diagrams of a used medical material measuring device of the present embodiment. An operation panel 2 and an input port 3 are provided at an upper portion of the device main body 1, and a door 4 is provided at the front. Are arranged so as to be openable and closable, and a caster 5 that allows the apparatus main body 1 to be moved is arranged below. Further, inside the apparatus main body 1, a hopper (gauze charging section) 6 communicating with the charging port 3, a guide cylinder 7 communicating with the hopper 6,
A gauze collection box 8 communicating with the guide cylinder 7 and capable of being loaded into and taken out of the apparatus main body 1 through the door 4, and a weighing table 9 at the bottom of the collection box 8.
A used gauze, which is constituted by, for example, an optical sensor (including a light emitting unit and a light receiving unit) above the outer peripheral portion of the guide cylinder 7 and is shielded from light by the used gauze falling from the input unit 6 Sensor 10 for detecting passage of
And a used gauze formed by, for example, an optical sensor (including a light-emitting unit and a light-receiving unit) below the outer peripheral portion of the guide cylinder 7 and being shielded from light by a used gauze falling from the input unit 6. Sensor 11 for detecting passage of
And a weight sensor 20 for detecting the weight of the used gauze, which is constituted by, for example, a load cell built in the weighing table 9.
(See FIG. 4 described later).

Here, as shown in FIG. 3, the operation panel 2 has a gauze bleeding amount display 12 for digitally displaying the blood sucked into the used gauze, for example, in ml units.
A bleeding amount reset switch 13 for instructing the measurement of the amount of bleeding in units of time or the number of sheets, a gauze number display 14 for digitally displaying the number of used gauze, for example, the collection box A button 15 for correcting the display of the gauze number display 14 when a plurality of used gauze is thrown into the inside of the gauze 8 at one time or when foreign matter is thrown in by mistake, and a gauze (used in this embodiment). The weight per sheet can be set to four different types of gauze, for example, 3 g, 4 g, 5 g, and 6 g, but is not limited to four types or gauze types. A gauze type setting display 16 for providing a unit gauze weight input unit 21 (see FIG. 4 described later) for displaying the number of gauze used by type and the total number of gauze used; A reset button 17 for simultaneously clears the display of the display of the blood loss indicator 12 gauze number display 14 is disposed.

In this case, the used medical material measuring apparatus according to the present embodiment can be used when the used gauze inserted from the input port 3 passes through the upper sensor 10 and the lower sensor 11 without fail,
The alarm 26 when the used gauze is caught in the middle of the hopper 6 or the guide tube 7 or when the collection box 8 becomes full with the used gauze put in (see FIG. 4 described later).
And a flicker function that flashes the gauze bleeding amount display 12 to notify the user of an abnormality immediately after the apparatus is turned on and when the collection box 8 is not completely loaded into the apparatus main body 1. And a memory function for storing and holding the current display contents of the gauze bleeding amount display 12 and the gauze number display 14 in preparation for a power failure or when the power cord is disconnected from the outlet. .

As shown in FIG. 4, the control system of the used medical material measuring apparatus according to the present embodiment includes an upper sensor 10 disposed above the outer periphery of the guide tube 7 and a lower sensor 10 disposed below the outer periphery of the guide tube 7. The lower sensor 11 provided, the weight sensor 20 built in the weighing platform 9, the unit gauze weight input unit 21 provided on the gauze type setting display 16 of the operation panel 2, and the proper position of the apparatus main body 1. Built-in time limit judging means 22, built-in heavy object judging means 23 in the proper position of device main body 1, built-in bleeding amount measuring unit 24 in the proper position of main body 1, and counter built in operation panel 2 25, an alarm 26 disposed at an appropriate position of the apparatus main body 1, and a bleeding amount indicator 12 disposed at the front of the operation panel 2. The weight sensor 20 detects the weight of the used gauze that has fallen onto the weighing table 9 and outputs a detected weight signal to the heavy object determination unit 23 and the bleeding amount measurement unit 24. From the unit gauze weight input unit 21, a desired weight per unused gauze (four types of 3 g, 4 g, 5 g, and 6 g in this embodiment) used for surgery is input. ing. In addition, the time period determination unit 22 determines that the time during which the upper sensor 10 or the lower sensor 11 is shielded from light by the used gauze falling from the hopper 6 is less than 0.5 seconds or more than 0.5 seconds, for example. If the light-shielding state time (time during which the sensor 10 or 11 continues to detect) is determined to be, for example, less than 0.5 seconds, a passing signal (indicating a normal state in which one used gauze has dropped) Is output to the heavy object determination means 23, and if it is determined that the light blocking state time has continued for 0.5 second or more, an abnormal signal (for example, a used gauze clogging in the guide cylinder 7 or (Which indicates an abnormal state such as sticking) is output to the alarm 26 . to this
Thus, the alarm 26 emits an alarm sound indicating an abnormality. Further, the time limit determining means 22
Determines whether a weight increase has been detected by the weight sensor 20 within a predetermined time (for example, 0.5 seconds) from the time when the used gauze is detected by either the upper sensor 10 or the lower sensor 11. It has become. That is, specifically, when either the upper sensor 10 or the lower sensor 11 detects that the used gauze has passed, a timer (not shown) starts, and before the timer counts a preset time. Next, it is determined whether or not the weight detected by the weight sensor 20 has increased.

The weight determining means 23 is provided on the basis of a detection signal from a weight sensor 20 built in the weighing table 9.
The “weight before weight increase” and the “weight during weight increase” are measured and compared, for example, every 0.1 second for 1 second, and are equal to or more than a predetermined weight (in the present embodiment, for example, 2 g or more, but the numerical value is limited to this value). The counter 25 outputs a count signal to the counter 25 when the increase is confirmed. If the weight returns to the original weight within one second, it is determined that the weight has changed due to vibration or the like, and the counting signal is not output to the counter 25 (the number of sheets is not counted). Has become. When the weight increase is equal to or more than the predetermined weight, the heavy object determining means 23 determines that one used gauze has fallen into the collection box 8, outputs a number signal to the counter 25, and measures the bleeding amount. While the weight signal is output to the unit 24, if the weight increase is less than the predetermined weight, it is determined that, for example, a drop of blood or the like has fallen into the collection box 8, and a signal is sent to the counter 25 and the bleeding amount measurement unit 24. No output.
Thereby, the counter 25 counts up the number of used gauze by one based on the counting signal and integrates and displays the same on the gauze number display 14, while the bleeding amount measuring unit 24
Displays the amount of bleeding on the bleeding amount display 12 based on the weight signal. As described above, the bleeding amount measurement unit 24 performs the following control when measuring and comparing the “weight before weight increase” and the “weight during weight increase”, for example, every 0.1 second for 1 second. . That is, when the weight immediately before the weight increase is A, the previous bleeding amount display weight is C, and the weight one second after the start of the measurement (the weight during the weight increase) is B, A is obtained when C = A.
If <B (B−A ≧ 2 g), B−A is determined to be an increase in the amount of bleeding and is displayed on the bleeding amount display device 12. If C = A and A = B, the amount of bleeding does not increase. Therefore, the display on the bleeding amount display 12 is not performed. On the other hand, C
＜ If A (C> A or C <A), A <B (B
If −A ≧ 2 g), BC is determined to be an increase in the amount of bleeding and is displayed on the bleeding amount display 12, and C ≠ A (C> A or C
In the case of <A), if A = B, it is determined that the bleeding amount has not increased, and the display on the bleeding amount display 12 is not performed. That is, the bleeding amount measuring unit 24 detects that the time from the passage of the used gauze through the upper sensor 10 or the lower sensor 11 to the arrival at the weight sensor 20 is, for example, less than 0.5 seconds, and the detection by the weight sensor 20 is performed. When the weight increase is equal to or more than a predetermined weight (for example, 2 g), the bleeding amount corresponding to each of the above inequalities is calculated, and the calculated bleeding amount is displayed on the bleeding amount display 12.

Next, the operation when the used medical material measuring apparatus of the present embodiment having the above configuration is used will be described. First, before starting the operation, the gauze type setting display 1 on the operation panel 2
The unit weight of the unused gauze used for the operation (in this embodiment, the weight per gauze is, for example, 3 g, 4 g, 5 g, 6 g, and 4 different weights, for example, 3 g, 4 g, 5 g, 6 g, etc.) Is input, the input weight is stored in the bleeding amount measuring unit 24. Next, when the reset button 17 of the operation panel 2 is pressed, the previous display of the gauze bleeding amount display 12 and the previous display of the gauze number display 14 are cleared to prepare for the display relating to the current operation. After the operation is started, a person standing on the operation side puts used gauze (gauze into which blood is sucked) from the operation field with the hand wearing surgical gloves from the input port 3 of the apparatus main body 1 to 1.
When the used gauze is loaded one by one, the loaded used gauze passes through the hopper 6 and the guide cylinder 7, falls into the collection box 8, and is placed on the weighing table 9. In this case, when the used used gauze passes through the guide cylinder 7, the time limit determination unit 22 determines that the light shielding state of the upper sensor 10 or the lower sensor 11 is 0.
Judge whether the time is less than 5 seconds or 0.5 seconds or more,
If it continues for more than a second, the used gauze is
In order to determine an abnormal state in which the signal is stuck halfway or stuck to the wall of the guide cylinder 7 and output an abnormal signal to the alarm 26 , the alarm 2
From 6, an alarm sound indicating an abnormality sounds. On the other hand, if the light-shielded state is shorter than 0.5 seconds, it is determined that one used gauze has passed through the guide cylinder 7 in a normal state, and a passing signal is output to the heavy object determination unit 23. Thus, it is possible to accurately detect that the used gauze normally passes through the guide cylinder 7 one by one and falls into the collection box 8.

When the used gauze is placed on the weighing table 9, the heavy object determining means 23 determines “weight before weight increase” and “weight during weight increase” based on a detection signal from the weight sensor 20. Is measured and compared for one second, for example, every 0.1 seconds, and it is determined whether or not a predetermined weight (for example, 2 g) has been increased. When the heavy object determining means 23 determines that the weight increase is equal to or more than the predetermined weight, it determines that one used gauze has fallen into the collection box 8, so the counter 25 counts the number of used gauze by one. Up and gauze number display 1
4 is integrated and displayed. On the other hand, if the weight determining means 23 determines that the weight increase is less than the predetermined weight, it determines that, for example, a drop of blood or the like has fallen into the collection box 8.
No counting by 5 is performed. In this case, when the weight returns to the original weight within one second, it is determined that the weight has changed due to vibration or the like, and the counting by the counter 25 is not performed.

Further, the bleeding amount measuring unit 24 includes a “weight before weight increase” corresponding to the weight per unused gauze previously input from the unit gauze weight input unit, and a used weight to which blood has been sucked. The “weight during weight increase” corresponding to the weight of the gauze is measured and compared, for example, every 0.1 second for 1 second. That is, if the weight immediately before the weight increase is A, the previous bleeding amount display weight is C, and the weight one second after the start of the measurement (the weight during the weight increase) is B, A <B (where C = A) If BA ≧ 2 g), it is determined that BA is an increase in the amount of bleeding, and the bleeding amount indicator 1
2 and C = A, and if A = B, it is determined that the bleeding amount has not increased, and the display on the bleeding amount display 12 is not performed.
On the other hand, if C ≠ A (C> A or C <A), A <B
(However, if BA ≧ 2 g), BC is determined to be an increase in the amount of bleeding and is displayed on the bleeding amount display 12, and if C ≠ A (C> A or C <A), A = B Then, it is determined that the bleeding amount has not increased, and the display on the bleeding amount display 12 is not performed. In this case, the bleeding amount measurement unit 24 determines that the time from when the used gauze passes through the upper sensor 10 or the lower sensor 11 to when the weight sensor 20 detects the weight is less than 0.5 seconds, for example, and the detection by the weight sensor 20 is performed. When the weight increase is, for example, 2 g or more, the bleeding amount is calculated and displayed. Thereby, the number of used gauze and the amount of blood (bleeding amount) sucked into the used gauze can be clearly confirmed.
When the bleeding amount reset switch 13 is pressed, the bleeding amount can be measured in units of time or in units of sheets. In addition, when a plurality of used gauze or foreign matter is thrown into the collection box 8 at one time, if the button 15 is pressed, the display of the gauze number display 14 can be corrected. On the other hand, the used gauze is
Or if it does not detect an increase in the weight by weight sensor 20 also exceeds 0.5 seconds, for example, from the time it is detected by the lower sensor 11 to output an abnormality signal to the alarm unit 26, abnormality alarm device 26 An alarm sound sounds.

That is, according to the used medical material measuring apparatus of this embodiment, since the control is performed as described above, the used gauze does not drop smoothly onto the measuring table 9 at the bottom of the collection box 8 and the guide tube 7 does not fall. If it gets caught on the wall or sticks to the wall,
If the user enters the gap between the collection box 8 and the apparatus main body 1 without falling into the collection box 8, the fact that this has occurred is displayed through the alarm 26, and the weighing platform at the bottom of the collection box 8 is displayed. It is possible to accurately count and display the number of only the used gauze that has fallen on the top 9, and to accurately measure and display the blood sucked into the used gauze, that is, the amount of bleeding. Thereby, the performance and reliability of the used medical material measuring device can be improved.

In the present embodiment, the blood sucked into the used gauze is measured, but it is not limited to this.
It is also possible to measure various other liquids sucked into gauze. Further, in this embodiment, the number of used gauze is measured, but the present invention is not limited to this, and it is also possible to measure the number of cloth, nonwoven fabric, cotton, paper, etc. into which blood or other various liquids are sucked. It is.

[0019]

As described above, according to the present invention, there is provided a used medical material measuring apparatus configured to measure and display the number of used medical materials and the amount of liquid adsorbed on the used medical materials. A loading section into which the used medical material is charged, a detecting means for detecting the passage of the used medical material falling in the loading section, and a used medical material falling in the loading section are collected. Collection unit, and weighing means for measuring the weight of the used medical material dropped into the collection unit,
Setting means for setting the weight of the medical material before use, counting means for counting the number of used medical materials, number display means for displaying the number of used medical materials, and amount of liquid adsorbed on the used medical material , A warning means for warning of an abnormal state in which the used medical material does not pass normally through the input section, and a time for which the detecting means keeps detecting that the used medical material is present is predetermined. In addition to determining whether the time is less than the predetermined time or exceeding the predetermined time, it is determined whether the weight increase is detected by the weighing means within a predetermined time from the time when the used medical material is detected by the detection means, and
It is determined that the time to continue to detect used medical
Or the used medical material is detected by the detecting means.
Within a predetermined time from the time when the
If no increase is detected, the alarm means
When the time to continue detecting the used medical material is determined by the time determination unit to be less than a predetermined time, the counting unit counts the number of the used medical materials, and to the integrated display on the display means
A weighted object judging means, and the time limit judging means judges that the weight increase has been detected by the weighing means within a predetermined time from the time when the used medical material is detected by the detecting means, and the used medical material is judged by the weighing means. When the weight increase of the material is measured to be equal to or more than a predetermined weight, a difference between the measured weight of the used medical material by the measuring means and the set weight of the medical material before use by the setting means is calculated, and the calculated weight is calculated. Since the apparatus is provided with the liquid amount measuring means for displaying the amount of adsorbed liquid on the liquid amount displaying means, the following effects can be obtained. When the used medical material is injected into the input section of the device, the used medical material does not fall smoothly into the collection section, but adheres to the wall of the input section above the collection section, and does not fall into the collection section. If a problem such as getting into the gap between the collection unit and the main body of the device occurs, the fact is displayed through the alarm means, and only the number of used medical materials collected in the collection unit is accurately determined. And the amount of liquid adsorbed on the used medical material collected by the collection unit can be accurately measured. As described above, the measurement performance of the number of used medical materials and the amount of liquid adsorbed on the used medical materials can be improved, and it is suitable for labor saving in medical institutions and prevention of infection.

[Brief description of the drawings]

FIG. 1 is a front view of a used medical material measuring device according to an embodiment of the present invention.

FIG. 2 is a right side view of the used medical material measuring apparatus according to the present embodiment.

FIG. 3 is a front view of an operation panel according to the embodiment.

FIG. 4 is a block diagram of a control system according to the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Operation panel 3 Input port (input part) 6 Hopper (input part) 7 Guide cylinder (input part) 8 Collection box (collection part) 9 Weighing stand (weighing means) 10 Upper sensor (detection means) 11 Lower sensor (Detection means) 12 Gauze bleeding amount display (liquid amount display means) 13 Bleeding amount reset switch 14 Gauze number display (number display means) 16 Gauze type setting display 17 Reset switch 20 Weight sensor (weighing means) 21 Unit gauze Weight input unit (setting unit) 22 Time limit determining unit 23 Heavy object determining unit 24 Bleeding amount measuring unit (liquid amount measuring unit) 25 Counter (counting unit) 26 Alarm unit (alarm unit)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A61B 19/00

Claims (1)

(57) [Scope of request for utility model registration] 1. A used medical material measuring device configured to measure and display the number of used medical materials and the amount of liquid adsorbed on the used medical materials, wherein an input section into which the used medical materials are input. Detecting means for detecting passage of used medical material falling in the input section; collecting section in which used medical material falling in the input section is collected; and use dropped in the collecting section. Weighing means for measuring the weight of used medical materials, setting means for setting the weight of used medical materials, counting means for counting the number of used medical materials, and number of sheets for displaying the number of used medical materials Display means, liquid amount display means for displaying the amount of adsorbed liquid of the used medical material, alarm means for alarming an abnormal state in which the used medical material does not normally pass through the charging section, and the used means by the detecting means Over time continues to detect that the medical material exists to determine whether or exceeds a predetermined time less than the predetermined time, detecting a weight increase in the metering means from the time the spent medical material is detected by said detecting means within a predetermined time Judge whether or not used medical materials
If it is determined that the time to continue feeding is over the specified time,
Indicates that the used medical material has been detected by the detection means.
A weight increase is detected by the weighing means within a predetermined time from the point in time.
When there is no alarm, the alarm means alerts the abnormal state, and the time determination means determines that the time for continuously detecting the used medical material is less than a predetermined time. a heavy judging means make integrated display by counting the number of the used medical materials to the number display unit by means within the time the spent medical material is detected by the detection means the predetermined time by the time period judging means When it is determined that the weight increase is detected by the weighing unit and the weight increase of the used medical material is weighed to a predetermined weight or more by the weighing unit, the weighed weight of the used medical material by the weighing unit and the setting unit Liquid amount measuring means for calculating a difference from the set weight of the medical material before use according to the above, and displaying the calculated weight as the amount of adsorbed liquid on the liquid amount display means. Measuring device of used medical products characterized.