Accurate meter for collected blood culture

Abstract

The utility model belongs to the technical field of blood culture metering equipment, and discloses an accurate metering instrument for collecting blood culture, which comprises a weighing instrument, the weighing instrument comprises a scale pan, a weighing sensor and a control panel, the scale pan is detachably connected with a blood culture bottle fixing piece, and the two ends of the blood culture bottle fixing piece have height difference. The control panel is provided with a controller, a display screen, an alarm, a return-to-zero button and a plurality of preset capacity buttons, and the controller is connected with the signal processor, the display screen, the alarm, the return-to-zero button and the preset capacity buttons; the blood culture metering device solves the problems that the metering accuracy of blood culture is influenced, the blood sampling efficiency is reduced and the workload of nurses is increased due to inaccurate reading or wrong reading in the existing blood culture metering mode.

Description

Technical Field

[0001] The utility model relates to the technical field of blood culture metering equipment, in particular to an accurate metering instrument for collecting blood culture. Background Technique

[0002] Blood culture is an artificial culture method in which freshly collected blood specimens are inoculated on a nutrient medium, and under certain conditions such as temperature and humidity, bacteria with high nutritional requirements are allowed to grow and reproduce, and then identified to determine the pathogenic bacteria. Blood culture is mainly used to confirm the presence of infectious pathogens, identify the types of pathogens, and guide the standardized treatment of antibacterial drugs. The blood collection volume directly affects the positive rate of blood culture, that is, whether the pathogen can be successfully cultured. Insufficient blood collection volume may lead to false negatives or delayed microbial growth, while excessive blood collection volume may cause false positives in culture due to a large amount of background CO2 produced by white blood cells. Therefore, accurately collecting the volume of blood culture is of great significance for the diagnosis and treatment of diseases.

[0003] At present, the method of metering blood culture during blood collection is for the blood collection nurse to observe the scale line on the blood culture bottle. However, generally, the patient lies on the hospital bed, and the reagent bottle is generally placed obliquely during blood culture collection, which will cause inaccurate or incorrect readings of the scale line, thus affecting the metering accuracy of blood culture. Moreover, reading the scale line wastes a lot of time, reduces the blood collection efficiency, and increases the workload of nurses. Content of the Utility Model

[0004] The utility model aims to provide an accurate metering instrument for collecting blood culture to solve the problems that the existing method of metering blood culture affects the metering accuracy of blood culture due to inaccurate or incorrect readings, reduces the blood collection efficiency, and increases the workload of nurses.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] An accurate metering instrument for collecting blood culture includes a weighing instrument, the weighing instrument includes a weighing pan, a weighing sensor and a control panel. A blood culture bottle fixing member is detachably connected to the weighing pan, and there is a height difference at both ends of the blood culture bottle fixing member. The control panel is provided with a controller, a display screen, an alarm, a zeroing button and a number of preset capacity buttons, and the controller is respectively connected to the signal processor, the display screen, the alarm, the zeroing button and a number of the preset capacity buttons.

[0007] Further, the blood culture bottle fixing member includes a column body with a number of arc-shaped grooves, the axis of the arc-shaped groove is inclined to the plane of the weighing pan, and the inclination angle is 45°, and a baffle is provided at one end of the arc-shaped groove close to the control panel.

[0008] Further, the number of the preset volume buttons is four, and the preset volumes of the four preset volume buttons are 3 ml, 5 ml, 8 ml, and 10 ml respectively.

[0009] Further, the weighing pan is provided with an installation groove, the bottom of the blood culture bottle fixing member is connected with an installation convex block adapted to the installation groove, the installation convex block is slidably connected in the installation groove, and a fixing member for restricting the sliding of the installation convex block is arranged on the installation convex block.

[0010] Further, the fixing member is a bolt or a pin.

[0011] Principle and beneficial effects of the technical solution:

[0012] (1) By utilizing the weighing principle of the weighing instrument and combining it with the blood culture bottle fixing member, the preset volume buttons, and the alarm, the present utility model realizes the accurate measurement of blood culture. Among them, the weighing principle of the weighing instrument is that when an object is placed on the weighing pan, the pressure is applied to the weighing sensor, which undergoes elastic deformation, thereby causing a change in impedance. At the same time, the excitation voltage changes, and an analog signal is output. After being processed by the controller, the result is output to the display screen. And the accuracy of this weighing instrument is accurate to 0.01 g. The blood culture bottle fixing member of the present utility model is used to fix the blood culture bottle, and there is a height difference at both ends of the blood culture bottle fixing member, so that the mouth of the blood culture bottle placed on it is higher than the bottom of the blood culture bottle, enabling the blood culture to flow to the bottom of the blood culture bottle under the action of gravity, mix with the culture medium to culture bacteria, increasing the convenience of use and reducing the workload of nurses. The controller is respectively connected to the weighing sensor, the display screen, the alarm, the zeroing button, and several preset volume buttons. The several preset volume buttons are respectively preset with different volume values. When one of the preset volume buttons is pressed, the controller receives the signal and, according to the real-time weight signal sent by the weighing sensor, outputs the real-time weight value to the display screen. And when the weight of the blood culture reaches the volume value of the preset volume button, the controller controls the alarm to emit an alarm sound to prompt the nurse to stop blood collection. In this way, the weighing instrument can accurately weigh, the alarm can prompt the nurse to stop blood collection, increasing the accuracy of blood culture measurement while also increasing the operation convenience and reducing the workload of nurses. When the zeroing button is pressed, after the controller receives the zeroing signal, it zeros the output value of the display screen and re-measures the weight, enabling the immediate collection of the second bottle of blood culture, further increasing the operation convenience and reducing the workload of nurses. The setting of the display screen can display the weight in real time. When an unexpected situation occurs, such as when the patient's blood vessels cannot draw blood halfway through the blood culture collection, the volume of the blood culture that still needs to be drawn can be known according to the display screen.

[0013] (2) Use a cylinder with several arc-shaped grooves as the blood culture bottle fixing part. The arc-shaped grooves can better fix the blood culture bottle, and the baffle can prevent the blood culture bottle from slipping when the clamping force of the arc-shaped grooves is insufficient, further increasing the convenience of operation; the preset capacities of the preset capacity buttons are 3 ml, 5 ml, 8 ml, and 10 ml respectively, which are suitable for the current blood culture collection volume requirements and increase the applicability of the instrument; the weighing pan and the blood culture bottle fixing part are detachably connected through the installation groove and the installation convex block, with reliable connection strength and convenient installation; the end of the blood culture bottle fixing part close to the control panel is lower than the end far from the control panel, which is convenient for nurses to observe that the higher end faces the patient. In addition, the inclination angle between the axis of the arc-shaped groove and the plane of the weighing pan is greater than or equal to 45°, so that the blood can flow into the blood culture bottle and fuse with the culture medium. Description of the Drawings

[0014] Figure 1 Structural schematic of an accurate metering instrument for collecting blood culture of the present utility model Figure 1 ;

[0015] Figure 2 Side view of an accurate metering instrument for collecting blood culture of the present utility model;

[0016] Figure 3 Structural schematic of an accurate metering instrument for collecting blood culture of the present utility model Figure 2 ;

[0017] Figure 4 Structural schematic diagram of the weighing instrument of an accurate metering instrument for collecting blood culture of the present utility model;

[0018] The names of the corresponding marks in the drawings are:

[0019] Weighing instrument 1, control panel 11, preset capacity button 111, alarm 112, zeroing button 113, display screen 114, installation groove 12, blood culture bottle fixing part 2, arc-shaped groove 21, installation convex block 22, baffle 23, fixing part 3. Detailed Description of the Preferred Embodiment

[0020] The present utility model will be further described in detail below in conjunction with the drawings and embodiments:

[0021] As Figures 1 to 4As shown in the figure, a precise measuring instrument for collecting blood cultures includes a weighing instrument 1. The weighing instrument 1 includes a weighing pan, a weighing sensor, and a control panel 11. Among them, the weighing sensor is a piezoresistive sensor that measures the weight by changing the resistance inside the sensor due to the weight of an object. A blood culture bottle fixing member 2 is detachably connected to the weighing pan, and there is a height difference at both ends of the blood culture bottle fixing member 2. Specifically, the weighing pan is provided with an installation groove 12, and the bottom of the blood culture bottle fixing member 2 is connected with an installation protrusion 22 adapted to the installation groove 12. The installation protrusion 22 is slidably connected in the installation groove 12, and a bolt is provided on the installation protrusion 22 to limit the sliding of the installation protrusion 22. In this embodiment, the blood culture bottle fixing member 2 includes a column body with two arc-shaped grooves 21. The axis of the arc-shaped groove 21 is inclined to the weighing pan plane at an inclination angle of 45°. A baffle 23 is provided at one end of the arc-shaped groove 21 close to the weighing pan. The control panel 11 is provided with a controller, a display screen 114, an alarm 112, a zeroing button 113, and several preset capacity buttons 111. The controller is respectively connected to the weighing sensor, the display screen 114, the alarm 112, the zeroing button 113, and several preset capacity buttons 111. Among them, the number of preset capacity buttons 111 is four, and the preset capacities of the four preset capacity buttons 111 are 3 ml, 5 ml, 8 ml, and 10 ml respectively.

[0022] The specific implementation process is as follows:

[0023] Slide the installation protrusion 22 into the installation groove 12, fix the installation protrusion 22 in the installation groove 12 with a bolt, place the weighing instrument 1 on the bedside table or the hospital bed, then install the blood culture bottle in the arc-shaped groove 21, start the weighing instrument 1, zero the weight, and then press one of the preset capacity buttons 111. When the alarm 112 emits an alarm sound, stop blood drawing. If multiple bottles of blood cultures need to be drawn, press the zeroing button 113 and repeat the above steps.

[0024] Among them, the blood culture bottle fixing member 2 of the present utility model is used to fix the blood culture bottle, and there is a height difference at both ends of the blood culture bottle fixing member 2, so that the mouth of the blood culture bottle placed thereon is higher than the bottom of the blood culture bottle, enabling the blood culture to flow to the bottom of the blood culture bottle under the action of gravity, mix with the culture medium to culture bacteria, increasing the convenience of use and reducing the workload of nurses; the controller is respectively connected to the weighing sensor, the display screen 114, the alarm 112, the zero button 113 and several preset capacity buttons 111. The several preset capacity buttons 111 are respectively preset with different capacity values. Pressing one of the preset capacity buttons 111, the controller receives the signal and outputs the real-time weight value to the display screen 114 according to the real-time weight signal sent by the weighing sensor. When the weight of the blood culture reaches the capacity value of the preset capacity button 111, the controller controls the alarm 112 to emit an alarm sound to prompt the nurse to stop blood collection; thus, the weighing instrument 1 can accurately weigh, and the alarm 112 can prompt the nurse to stop blood collection, increasing the measurement accuracy of the blood culture while also increasing the operation convenience and reducing the workload of nurses; pressing the zero button 113, after the controller receives the zero signal, it zeros the output value of the display screen 114 and re-measures the weight, and the second bottle of blood culture can be immediately collected, further increasing the operation convenience and reducing the workload of nurses; the setting of the display screen 114 can display the weight in real time. When an unexpected situation occurs, such as when the patient's blood vessels cannot draw blood halfway through the blood culture collection, the capacity of the blood culture that still needs to be drawn can be known according to the display screen 114. The controller calculates the weight of the blood culture corresponding to the preset capacity according to the density-capacity relationship of the blood culture.

[0025] The above are only the embodiments of the present utility model. Specific technical solutions or common knowledge such as characteristics known in the solutions are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present utility model, several deformations and improvements can still be made, which should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope required by this application should be subject to the content of its claims, and the specific implementation manners in the specification can be used to explain the content of the claims.

Claims

1. An accurate measuring instrument for collecting blood culture, comprising a weighing instrument (1), wherein the weighing instrument (1) comprises a weighing pan, a weighing sensor and a control panel (11), characterized in that: A blood culture bottle fixing part (2) is detachably connected to the weighing pan, and two ends of the blood culture bottle fixing part (2) have a height difference. The control panel (11) is provided with a controller, a display screen (114), an alarm (112), a zeroing button (113) and a plurality of preset capacity buttons (111), and the controller is respectively connected to the weighing sensor, the display screen (114), the alarm (112), the zeroing button (113) and the plurality of preset capacity buttons (111).

2. The accurate meter for collecting blood culture according to claim 1, characterized in that: The blood culture bottle fixing member (2) comprises a column with a plurality of arc-shaped grooves (21), the axes of the arc-shaped grooves (21) are inclined to the plane of the weighing pan, and the inclination angle is greater than or equal to 45°, and a baffle (23) is provided at one end of the arc-shaped groove (21) close to the control panel (11).

3. The accurate meter for collecting blood culture according to claim 1, characterized in that: The number of the preset capacity buttons (111) is four, and the preset capacities of the four preset capacity buttons (111) are 3 ml, 5 ml, 8 ml and 10 ml respectively.

4. The accurate meter for collecting blood culture according to claim 1, characterized in that: The weighing pan is provided with a mounting groove (12); a mounting protrusion (22) adapted to the mounting groove (12) is connected to the bottom of the blood culture bottle fixing member (2); the mounting protrusion (22) is slidably connected in the mounting groove (12); and a fixing member (3) for limiting the sliding of the mounting protrusion (22) is provided on the mounting protrusion (22).

5. The accurate meter for collecting blood culture according to claim 4, characterized in that: The fixing member (3) is a bolt or a pin.

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