CN115326374A - Infusion test equipment and test method for special infusion apparatus for parenteral nutrition - Google Patents
Infusion test equipment and test method for special infusion apparatus for parenteral nutrition Download PDFInfo
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- CN115326374A CN115326374A CN202210970776.0A CN202210970776A CN115326374A CN 115326374 A CN115326374 A CN 115326374A CN 202210970776 A CN202210970776 A CN 202210970776A CN 115326374 A CN115326374 A CN 115326374A
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
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Abstract
The invention discloses a transfusion device infusion test device and a test method special for parenteral nutrition, belonging to the technical field of medical instrument inspection, and the transfusion device infusion test device structurally comprises a bottom plate, wherein one or more collecting bottles are arranged on the bottom plate; sample containers are correspondingly arranged above the collecting bottles one by one, and the sample containers are arranged on the top plate; transfusion devices are arranged between the sample container and the collecting bottle, and a flow regulator is arranged corresponding to each transfusion device; the top plate comprises two layers which are arranged up and down, the upper layer is a movable plate, and the lower layer is a fixed plate; the fixed plate is connected with the bottom plate through a support frame, the movable plate is connected with the fixed plate through an elastic component, and the sample container is arranged on the movable plate; one or more unordered vibrating devices are arranged on the movable plate. The technical scheme of the invention can better simulate the clinical practical use condition of the parenteral nutrition infusion apparatus and improve the efficiency and accuracy.
Description
Technical Field
The invention relates to the technical field of medical instrument inspection, in particular to infusion apparatus quality inspection, and specifically relates to infusion test equipment and a test method of an infusion apparatus special for parenteral nutrition.
Background
The special transfusion system for parenteral nutrition is a transfusion system special for parenteral nutrient solution transfusion, and due to the particularity of transfusion substances, the use performance of the special transfusion system for parenteral nutrition is different from that of a common medicine transfusion system. Infusion of a nutritional liquid containing fat milk presents a certain risk for clinical use, since one of the main components of parenteral nutritional liquids is fat milk. The fat emulsion is a two-phase system formed by uniformly dispersing tiny oil drops in a water phase by using an emulsifier and a mechanical force, and the particle size of the fat emulsion is generally controlled to be 0.4-1 mu m. The diameter of human pulmonary microvasculature is about 5 μm, and if the oil drop diameter of fat emulsion exceeds 5 μm, the risk of pulmonary embolism is increased, and the fat emulsion can be phagocytized by endothelial system immune cells to cause oxidation reaction and tissue injury.
The method aims at that the parenteral nutrient solution infusion apparatus for infusing the fat-containing milk by the infusion apparatus at home and abroad has no industrial standard to guide production and detection, the parenteral nutrient solution generally needs a long time (more than 16 h) and a large dose of infusion (about 1500 mL) in clinic, a 1.2-5 mu m precision filter is needed, the precision filter is configured to infuse the nutrient solution containing the fat milk, and the fat milk in a nutrient bag can generate particle aggregation to influence the infusion flow rate if the fat milk is left for long-time standing infusion due to large-capacity long-time infusion, the disordered and frequent shaking actions on the nutrient solution are clinically increased to prevent the fat milk aggregation so as to ensure the stability of the infusion flow, and based on clinical actual use, the requirements on the infusion performance of the parenteral nutrition special infusion apparatus and the requirements on the parenteral nutrition infusion performance detection special infusion apparatus are introduced and the requirements on the parenteral nutrition infusion performance detection special apparatus are provided.
At present, simple test equipment given by relevant standards is adopted for performance test of a special parenteral nutrition infusion apparatus, and a 500ml infusion bottle is generally used for containing solution for infusion, but in actual test operation, the following defects exist:
1. in order to truly simulate the long-time and large-dose infusion of the special parenteral nutrition infusion apparatus, the testing time is longer, the volume of the infusion solution is larger, and a 500ml infusion bottle cannot meet the test requirements, so that the bottle change in the middle is needed to complete the whole test, and the middle bottle change can bring about flow influence and influence the accuracy of the test result.
2. The manual operation test can only test one infusion apparatus at each time, the efficiency is low, the labor consumption is high, and the accuracy rate also has a space for improving.
In addition, most of the current infusion performance tests are performed under a static condition, but in consideration of parenteral nutrition infusion apparatuses, in the clinical infusion process, in order to prevent the fat particles of the fat emulsion nutrient solution from gathering, a clinician can add dynamic conditions, such as shaking and homogenizing parenteral nutrient solution with fixed frequency at intervals, and the vibration caused by the shaking and homogenizing parenteral nutrient solution is disordered vibration without fixed frequency, so that the current test equipment and method cannot well simulate the actual use condition, and the test result is not accurate and comprehensive.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide infusion test equipment and a test method for a special parenteral nutrition infusion apparatus, wherein the test equipment can better simulate the clinical actual infusion condition of the parenteral nutrition infusion apparatus and improve the efficiency and the accuracy; the test method has simple steps and scientific and accurate test results.
The technical scheme adopted by the invention for solving the technical problem comprises the following steps:
on one hand, the parenteral nutrition special infusion apparatus infusion test device comprises a bottom plate, wherein one or more collecting bottles are arranged on the bottom plate; sample containers are correspondingly arranged above the collecting bottles one by one, and the sample containers are arranged on the top plate; transfusion devices are arranged between the sample container and the collecting bottle, and a flow regulator is arranged corresponding to each transfusion device;
the top plate comprises two layers which are arranged up and down, the upper layer is a movable plate, and the lower layer is a fixed plate; the fixed plate is connected with the bottom plate through a support frame, the movable plate is connected with the fixed plate through an elastic component, a notch for the infusion apparatus to pass through is formed in the fixed plate, and the sample container is arranged on the movable plate;
the movable plate is provided with one or more disordered vibration devices, and each disordered vibration device comprises an air supply device, a turntable and a track; the center of the rotary table is provided with a rotating shaft, the rotating shaft is connected with a driving device, the upper surface of the rotary table is provided with a plurality of balls with different sizes, the balls are respectively arranged in ball grooves, and the ball grooves are distributed around the rotating shaft in a divergent manner; a cover capable of being opened and closed is arranged above the upper surface of the rotary table, and a cavity is formed between the cover and the upper surface of the rotary table; the track is an annular track with smooth transition at the corner, the track is communicated with the cavity through a gas pipe and a return pipe, the gas supply device is communicated with the cavity through a gas inlet pipe, the gas inlet pipe is aligned with the gas pipe and is arranged at a position close to one side of the cavity and corresponding to the ball groove, and the return pipe is arranged at the other side of the cavity and is symmetrically arranged with the gas pipe; an air outlet pipe is arranged on one side of the track far away from the air conveying pipe.
Furthermore, half of the ball grooves are filled with balls, and the other half of the ball grooves are idle.
Furthermore, the track is obliquely arranged, the height of one side of the track close to the turntable is lower, and the height of one side of the track far away from the turntable is higher.
Further, a protective cover is arranged on the outer side of the track, and the bottom end of the protective cover is flush with the bottom end of the driving device.
Further, elastomeric element includes the spring, the spring housing is put in the outside of stand, stand bottom fixed mounting is on the fixed plate, and the stand top is passed the fly leaf and is extended to the top of fly leaf, be provided with the through-hole that supplies the stand to pass on the fly leaf, the diameter of through-hole is greater than the diameter of stand.
Furthermore, the cover is made of transparent materials, and the cover and the rotary table are matched with each other through the elastic clamping strips and the clamping grooves, so that the cover and the rotary table can rotate relatively in situ.
Further, be provided with the cabinet body on the bottom plate, the receiving flask all is located the internal portion of cabinet, is provided with the hole that supplies the transfusion system ware to pass on the top surface of the cabinet body, and the front side of the cabinet body is provided with the cabinet door that can open, be provided with transparent region on the cabinet door.
Further, the collecting bottles are respectively placed on a weighing device, the weighing device is connected with a communication module, and the communication module is connected to an upper computer.
On the other hand, the invention provides a test method for carrying out an instant flow test by using any one of the parenteral nutrition special infusion apparatus infusion test devices, which comprises the following steps:
arranging 1500ml of parenteral nutrient solution samples for test in a sample container;
communicating the top end of the tested infusion apparatus with a sample container, and communicating the bottom end of the tested infusion apparatus with a collecting bottle;
adjusting the infusion apparatus to a speed of 50 +/-10 drops/min through a flow regulator, and acquiring the average flow and the instantaneous flow stability of the 1500ml test parenteral nutrient solution sample at the speed;
wherein the average flow is given by the following formula:
Qm＝Vm/Tm；
qm is the average flow, vm is the total volume of the parenteral nutrient solution sample output by the infusion apparatus, and Tm is the time required by the infusion apparatus to output the total volume Vm of the parenteral nutrient solution sample;
the instantaneous flow stability is given by the following formula:
r is the instantaneous flow stability, qi is the instantaneous flow;
Qi＝Vi/Ti；
vi is the volume of the parenteral nutrient solution sample output by the infusion apparatus within a certain time period, and Ti is the time required by the infusion apparatus to output the parenteral nutrient solution sample volume Vi;
and starting the disordered vibration device, and repeating the steps in the disordered vibration state.
In another aspect, a method for performing a flow rate reduction test using any of the parenteral nutrition dedicated infusion apparatus infusion test devices of the examples of the present invention includes:
arranging fat-containing milk nutrient solution with volume more than 1500ml in a sample container;
communicating the top end of the tested infusion apparatus with a sample container, and communicating the bottom end of the tested infusion apparatus with a collecting bottle;
the transfusion device infuses nutrient solution containing fat emulsion for 10min under 1m static head, and the flow rate is Q1;
after the transfusion device infuses 500ml of the fat-containing emulsion nutrient solution at the speed of 50 +/-10 drops/min, the transfusion device infuses the fat-containing emulsion nutrient solution for 10min at the static head of 1m, and the flow rate is Q2;
after the infusion apparatus infuses 1500ml of fat-containing emulsion nutrient solution at the speed of 50 +/-10 drops/min, the infusion apparatus infuses the fat-containing emulsion nutrient solution for 10min at the static head of 1m, and the flow rate is Q3;
the rate of flow reduction at the time of completion of 500ml of normal infusion was obtained according to the following formula:
the rate of flow reduction at 1500ml completion of normal infusion was obtained according to the following formula:
and starting the disordered vibration device, and repeating the steps in the disordered vibration state.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the parenteral nutrition infusion device infusion test equipment, the sample container for containing the test medium is arranged on the movable plate, the volume of the sample container can be designed according to needs and is generally set to be about 1.5L, the contained test medium can meet the needs of one-time complete test, the flow influence caused by middle bottle replacement is avoided, the test result is more accurate, and the complexity of the test operation is reduced.
2. According to the parenteral nutrition special infusion apparatus infusion test device disclosed by the invention, the movable plate is provided with the disordered vibration device which can generate disordered vibration to drive the movable plate and the sample container on the movable plate to vibrate, so that the multi-frequency irregular shaking motion of clinical medical personnel on nutrient solution in actual use is simulated, and compared with the fixed-frequency vibration, the disordered vibration can simulate the actual use condition more truly; and the static test can be realized when the disordered vibration device is not started, and the test result is more comprehensive and accurate.
3. According to the infusion test device of the special infusion apparatus for parenteral nutrition, which is disclosed by the invention, a plurality of sample containers can be arranged, so that a plurality of paths can be simultaneously tested, and the test efficiency is greatly improved; set up the collecting bottle in the cabinet internally, set up transparent area on the cabinet door, both formed the protection to the collecting bottle, do not influence the observation to situation in the collecting bottle again, the instrument commonly used in some experimentation of also being convenient for is deposited in setting up of the cabinet body, improves the convenience.
4. According to the parenteral nutrition infusion device infusion test equipment disclosed by the invention, the collecting bottle can be placed on the weighing device, other quality detection tests such as flow control characteristics and the like can be conveniently carried out, the weighing device of the cabinet body is protected, the interference and damage of the weighing device caused by the outside can be avoided, the weighing device is connected with the communication module, the communication module is connected to the upper computer, the real-time weight data of each test channel can be automatically acquired, the experiment curve and the data can be stored in the upper computer according to the requirements, and the manual work of operators is reduced.
5. According to the infusion test equipment of the special infusion apparatus for parenteral nutrition, disclosed by the invention, the flow regulator is arranged corresponding to each tested infusion apparatus, so that the flow can be accurately controlled by an operator conveniently, and the test result is accurate and high in reproducibility; the movable plate of the top plate is connected with the fixed plate through the elastic component, the movable plate is prevented from excessively inclining through the arranged stand column, the diameter of the through hole for the stand column to penetrate through on the movable plate is larger than that of the stand column, effective vibration of the movable plate can be guaranteed, the structure is simple, and the using effect is good.
6. According to the parenteral nutrition special infusion apparatus infusion test device disclosed by the invention, the disordered vibration device realizes vibration through the matching of the air supply device and the balls, as the balls are provided with a plurality of balls with different sizes, when the balls with different sizes are popped up under the action of air flow, the impact force generated on the track is different, so that vibration with different amplitudes is generated, after the balls are popped up, multi-frequency disordered vibration is generated, and the condition that jolt is generated on an ambulance or in the process of rescue in actual use can be better simulated.
7. According to the infusion test device of the special infusion apparatus for parenteral nutrition, disclosed by the invention, the balls are arranged in the ball groove, one half of the ball groove is filled with the balls, and the other half of the ball groove is idle, so that the recovered balls can smoothly enter the ball groove, the position of the balls can be conveniently controlled, and the reliability of the infusion test device can be improved; the track of the disordered vibration device is obliquely arranged, and the popped ball can automatically return to the turntable under the guide of the track, so that the device can continuously work conveniently.
8. According to the parenteral nutrition special infusion apparatus infusion test device disclosed by the invention, the rotary table is provided with the cover, so that the balls are prevented from falling off from the rotary table, the cover is made of a transparent material, the condition of the balls on the rotary table can be conveniently observed through the cover, the cover can be opened to replace or arrange the balls, and the use flexibility, reliability and convenience are improved.
9. The testing method for the instant flow test and the flow rate reduction test is realized by the infusion testing equipment of the special parenteral nutrition infusion apparatus, has simple steps and high accuracy, can quickly test the performance of a plurality of samples, saves manpower and improves efficiency; the multi-frequency irregular shaking motion of clinical medical staff to the nutrient solution in actual use is simulated, or the condition of bumping on an ambulance or in rescue operation is considered, so that the actual use condition is simulated more truly; and the test result is more comprehensive and accurate when the static and non-fixed frequency dynamic tests are carried out.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic overall structure diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a chaotic vibration device according to an embodiment of the present invention;
FIG. 3 is another schematic structural diagram of the chaotic vibration device according to the first embodiment of the present invention;
fig. 4 is a schematic diagram of a connection relationship between the weighing device, the communication module and the upper computer in the second embodiment of the present invention.
In the figure: the device comprises a base plate 1, a fixed plate 2, a movable plate 3, a support frame 4, a spring 5, a column 6, a sample container 7, an unordered vibrator 8, a turntable 81, a track 82, a ball 83, a ball groove 84, a rotating shaft 85, an air inlet pipe 86, a return pipe 87, an air inlet pipe 88, an air outlet pipe 89, a driving device 810, a cover 811, a shield 812, a containing groove 9, a cabinet 10, a cabinet door 11, a flow regulator 12, an infusion apparatus 13, a weighing device 14, a communication module 15 and an upper computer 16.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
The first embodiment is as follows:
as shown in fig. 1, fig. 2 and fig. 3, the present embodiment provides an infusion test apparatus for an infusion apparatus dedicated for parenteral nutrition, which includes a bottom plate 1, wherein one or more collection bottles are arranged on the bottom plate 1; sample containers 7 are correspondingly arranged above the collecting bottles one by one, and the sample containers 7 are arranged on the top plate; an infusion set 13 is arranged between the sample container 7 and the collecting bottle, and a flow regulator 12 is arranged corresponding to each infusion set 13.
The top plate comprises two layers which are arranged up and down, the upper layer is a movable plate 3, and the lower layer is a fixed plate 2; the fixed plate 2 is connected with the bottom plate 1 through a support frame 4, the movable plate 3 is connected with the fixed plate 2 through an elastic component, a gap for a transfusion device 13 to pass through is formed in the fixed plate 2, and the sample container 7 is arranged on the movable plate 3.
Specifically, sample container 7 is cylindricly, and sample container 7's lateral wall surface is provided with the external screw thread, be provided with the holding tank 9 with sample container 7 looks adaptation on the fly leaf 3, be provided with on the lateral wall of holding tank 9 with the internal thread that the external screw thread meshed mutually, the bottom of holding tank 9 is provided with the hole that supplies transfusion system ware 13 to pass.
In order to add the experiment medium conveniently, the sample container 7 is made of transparent material, and the side wall of the sample container 7 is provided with scales, in this embodiment, the sample container 7 and the collection bottle are transparent containers with the volume not less than 1.5L.
One or more disordered vibration devices 8 are arranged on the movable plate 3, and each disordered vibration device 8 comprises a gas supply device (not shown in the figure), a turntable 81 and a rail 82; a rotating shaft 85 is arranged at the center of the rotating disc 81, the rotating shaft 85 is connected with a driving device 810, a plurality of balls 83 with different sizes are arranged on the upper surface of the rotating disc 81, the balls 83 are respectively arranged in the ball grooves 84, and the ball grooves 84 are distributed around the rotating shaft 85 in a divergent manner; a cover 811 capable of being opened and closed is arranged above the upper surface of the rotating disk 81, and a cavity is formed between the cover 811 and the upper surface of the rotating disk 81; the track 82 is an annular track with smooth transition at a corner, the track 82 is communicated with the cavity through an air delivery pipe 88 and a return pipe 87, the air supply device is communicated with the cavity through an air inlet pipe 86, the air inlet pipe 86 is aligned with the air delivery pipe 88 and is arranged at a position close to one side of the cavity and corresponding to the ball groove 84, and the return pipe 87 is arranged at the other side of the cavity and is symmetrically arranged with the air delivery pipe 88; an air outlet pipe 89 is arranged on one side of the rail 82 far away from the air conveying pipe 88.
In particular, the track 82 may be configured to be circular or elliptical, preferably elliptical, to facilitate the generation of vibration. The air supply device can adopt an air pump, the air pump is connected with an electromagnetic valve, the electromagnetic valve is installed, the switching frequency of the air pump can be conveniently set, the automatic control of the air pump is achieved, lubricating grease is arranged in the rail 82, the smooth movement of the ball 83 is guaranteed, and the friction between the ball 83 and the rail 82 is reduced. The drive 810 may be a motor, and the diameter of the track 82 should be slightly larger than the diameter of the largest ball 83.
In order to facilitate the balls 83 to smoothly return to the rotating disk 81 and avoid the balls 83 on the rotating disk 81 from being disordered, half of the ball grooves 84 are filled with the balls 83, and the other half are vacant. Meanwhile, the track 82 is arranged obliquely, the height of the track 82 on the side close to the rotating disc 81 is lower, and the height of the track 82 on the side far from the rotating disc 81 is higher. Under the action of the gravity of the balls 83, the inclined tracks 82 guide the balls 83 back to the rotating disk 81, and because the ball grooves 84 are concave, the balls 83 roll into the empty ball grooves 84.
In order to protect the rail 82, facilitate the supporting and mounting of the rail 82, and increase the stability of the rail 82, a shield 812 is disposed on the outer side of the rail 82, and the bottom end of the shield 812 is flush with the bottom end of the driving device 810. The bottom end of the shield 812 is flush with the bottom end of the driving device 810, so as to facilitate the installation of the disordered vibrating device 8 on the movable plate 3, generally, two disordered vibrating devices 8 are provided, in order to keep the balance of the movable plate 3, the disordered vibrating devices 8 are symmetrically arranged on the movable plate 3, preferably symmetrically arranged in the middle of the movable plate 3, and when the number of the disordered vibrating devices 8 is increased, the disordered vibrating devices 8 are preferably uniformly arranged to keep the balance of the movable plate 3. To facilitate the arrangement and use of the air supply device, it is preferable that the turntable 81 is disposed outside the movable plate 3 and the rail 82 is disposed inside the movable plate 3.
In this embodiment, the elastic component includes a spring 5, the spring 5 is sleeved outside the upright post 6, the bottom end of the upright post 6 is fixedly mounted on the fixed plate 2, the top end of the upright post 6 penetrates through the movable plate 3 and extends to the upper side of the movable plate 3, a through hole for the upright post 6 to pass through is formed in the movable plate 3, and the diameter of the through hole is larger than that of the upright post 6. Specifically, the elastic components are distributed at four corners of the fixed plate 2, and the upright posts 6 support the movable plate 3 to prevent the movable plate from inclining excessively. In order to ensure the effective vibration of the movable plate 3, the diameter of the through hole for the upright post 6 to pass through on the movable plate 3 is larger than that of the upright post 6, and in order to reduce the friction between the upright post 6 and the through hole, a linear bearing is arranged at the position where the upright post 6 passes through the through hole.
In order to facilitate an operator to observe the condition of the balls 83 on the rotating disc 81, the cover 811 matched with the rotating disc 81 is made of transparent material, and the cover 811 and the rotating disc 81 are matched with each other through an elastic clamping strip and a clamping groove, so that the cover 811 and the rotating disc 81 can rotate relatively in situ. The inside of lid 811 and the lateral wall of carousel 81 set up the elasticity card strip and the draw-in groove of looks adaptation respectively, and elasticity card strip card is gone into behind the draw-in groove, and both realize connecting, nevertheless because elasticity card strip can be followed the draw-in groove and removed in it, so can not interfere the rotation of carousel 82.
Be provided with the cabinet body 10 on the bottom plate 1, the receiving flask all is located the internal portion of cabinet 10, is provided with the hole that supplies transfusion system 13 to pass on the top surface of the cabinet body 10, and the front side of the cabinet body 10 is provided with the cabinet door 11 that can open, is provided with transparent region on the cabinet door 11 for the condition in the observation cabinet body 10 of being convenient for, can adopt transparent organic glass to make the cabinet door 11. The cabinet body 10 not only protects the components on the bottom plate 1, but also can be used for placing test tools on the platform of the inner space and the top surface, so that the test operation is more convenient.
When the chaotic vibration device is used, a related test under a static condition can be carried out without starting the air pump of the chaotic vibration device 8, after the air pump of the chaotic vibration device 8 is started, the air pump outputs air flow, the air flow exerts acting force on the ball 83 on the turntable 81 through the air inlet pipe 86, and the ball 83 reaches the track 82 through the air conveying pipe 88 and moves along the track under the impact of the air flow. When the balls 83 reach the rail 82 and move in the rail 82, they will impact the rail 82, so that the disordered vibrating device 8 vibrates and drives the movable plate 3 to vibrate, and the movable plate 3 drives the sample container 7 thereon to vibrate, thereby implementing the related test under dynamic conditions.
Because the balls 83 are provided with a plurality of balls with different sizes, the acting forces generated when the balls 83 with different sizes enter the track 82 are different, so that the disordered vibration device 8 generates vibration with different frequencies, and the bumping condition in actual use is simulated. The track 82 is arranged obliquely, the ball 83 rolls downward under the guidance of the track 82 so that the ball 83 smoothly returns to the rotary disk 81, and a free ball groove 84 on the rotary disk 81 is concave so as to accommodate the returned ball 83.
The embodiment also provides a test method for carrying out an instant flow test by using the parenteral nutrition special infusion apparatus infusion test equipment, which comprises the following steps:
1500ml of parenteral nutrient solution samples for test are arranged in the sample container 7;
the top end of the tested infusion apparatus 13 is communicated with the sample container 7, and the bottom end is communicated with the collecting bottle;
adjusting the speed of the infusion set 13 to 50 +/-10 drops/min through a flow regulator 12, and obtaining the average flow and the instantaneous flow stability of the 1500ml test parenteral nutrient solution sample at the speed;
wherein the average flow is given by the following formula:
Qm＝Vm/Tm；
qm is the average flow, vm is the total volume of the parenteral nutrient solution sample output by the infusion apparatus, and Tm is the time required by the infusion apparatus to output the total volume Vm of the parenteral nutrient solution sample;
the instantaneous flow stability is given by the following formula:
r is the instantaneous flow stability, qi is the instantaneous flow;
Qi＝Vi/Ti；
vi is the volume of the parenteral nutrient solution sample output by the infusion apparatus within a certain time period, and Ti is the time required by the infusion apparatus to output the parenteral nutrient solution sample volume Vi;
the disordered vibrating device 8 is started, and the steps are repeated under the disordered vibrating state.
In addition, the embodiment also provides a test method for performing a flow rate reduction test by using the infusion test equipment of the special parenteral nutrition infusion apparatus, which comprises the following steps:
arranging fat-containing milk nutrient solution with volume more than 1500ml in the sample container 7;
the top end of the tested infusion apparatus 13 is communicated with the sample container 7, and the bottom end is communicated with the collecting bottle;
the transfusion device 13 infuses nutrient solution containing fat emulsion for 10min under 1m static pressure head, and the flow rate is Q1;
after 500ml of the fat-containing emulsion nutrient solution is infused by the infusion apparatus 13 at the speed of 50 +/-10 drops/min, the fat-containing emulsion nutrient solution is infused by the infusion apparatus 13 for 10min at the static head of 1m, and the flow rate is Q2;
after 1500ml of the fat-containing emulsion nutrient solution is infused by the infusion apparatus 13 at the speed of 50 +/-10 drops/min, the fat-containing emulsion nutrient solution is infused by the infusion apparatus 13 for 10min at the static head of 1m, and the flow rate is Q3;
the rate of flow reduction at the time of completion of 500ml of normal infusion was obtained according to the following formula:
the rate of flow reduction at 1500ml completion of normal infusion was obtained according to the following formula:
the disordered vibrating device 8 is started, and the steps are repeated under the disordered vibrating state.
Example two:
the same features of this embodiment and the first embodiment are not repeated, and the different features of this embodiment and the first embodiment are: as shown in fig. 4, in this embodiment, the collection bottles are respectively placed on the weighing devices 14, the weighing devices 14 are connected with the communication module 15, and the communication module 15 is connected to the upper computer 16.
The weighing device 14 is arranged, so that other quality detection tests such as flow control characteristics and the like needing weighing can be conveniently carried out, the automation degree is higher, the labor of operators is reduced, and the accuracy and the reproducibility are improved. Specifically, the weighing device 14 is a weighing device with model number of HZ AD 623-1TCC, and the communication module 15 is MOXA Uport 1130.
The upper computer 16 adopts a desktop computer or a notebook computer, and is provided with test software which is used for recording weight data, calculating volume data through the weight data and drawing curves.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Other technical features than those described in the specification are known to those skilled in the art, and are not described herein in detail in order to highlight the innovative features of the present invention.
Claims (10)
1. The parenteral nutrition special infusion apparatus infusion test equipment is characterized by comprising a bottom plate, wherein one or more collecting bottles are arranged on the bottom plate; sample containers are correspondingly arranged above the collecting bottles one by one, and the sample containers are arranged on the top plate; transfusion devices are arranged between the sample container and the collecting bottle, and a flow regulator is arranged corresponding to each transfusion device;
the top plate comprises two layers which are arranged up and down, the upper layer is a movable plate, and the lower layer is a fixed plate; the fixed plate is connected with the bottom plate through a support frame, the movable plate is connected with the fixed plate through an elastic component, a notch for the infusion apparatus to pass through is formed in the fixed plate, and the sample container is arranged on the movable plate;
one or more disordered vibration devices are arranged on the movable plate, and each disordered vibration device comprises a gas supply device, a turntable and a track; the center of the rotary table is provided with a rotating shaft, the rotating shaft is connected with a driving device, the upper surface of the rotary table is provided with a plurality of balls with different sizes, the balls are respectively arranged in ball grooves, and the ball grooves are distributed around the rotating shaft in a divergent manner; a cover capable of being opened and closed is arranged above the upper surface of the rotary table, and a cavity is formed between the cover and the upper surface of the rotary table; the track is an annular track with smooth transition at the corner, the track is communicated with the cavity through a gas pipe and a return pipe, the gas supply device is communicated with the cavity through a gas inlet pipe, the gas inlet pipe is aligned with the gas pipe and is arranged at a position close to one side of the cavity and corresponding to the ball groove, and the return pipe is arranged at the other side of the cavity and is symmetrically arranged with the gas pipe; an air outlet pipe is arranged on one side of the track far away from the air delivery pipe.
2. The parenteral nutrition dedicated infusion set infusion test device according to claim 1, wherein half of the ball grooves are filled with balls, and the other half are vacant.
3. The parenteral nutrition dedicated infusion set infusion test device according to claim 1, wherein the track is arranged obliquely, the height of the track is lower on the side close to the turntable, and the height of the track is higher on the side far away from the turntable.
4. The parenteral nutrition dedicated infusion set infusion test device according to claim 1, wherein a shield is arranged outside the track, and the bottom end of the shield is flush with the bottom end of the driving device.
5. The parenteral nutrition infusion set infusion test device special for parenteral nutrition of claim 1, wherein the elastic component comprises a spring, the spring is sleeved outside the upright column, the bottom end of the upright column is fixedly installed on the fixed plate, the top end of the upright column penetrates through the movable plate and extends to the upper part of the movable plate, a through hole for the upright column to penetrate through is arranged on the movable plate, and the diameter of the through hole is larger than that of the upright column.
6. The parenteral nutrition dedicated infusion set infusion test device according to claim 1, wherein the cover is made of transparent material, and the cover and the turntable are mutually matched through an elastic clamping strip and a clamping groove, so that the cover and the turntable can rotate relatively in situ.
7. The parenteral nutrition infusion set infusion test device as claimed in claim 1, wherein the bottom plate is provided with a cabinet body, the collection bottles are all positioned in the cabinet body, the top surface of the cabinet body is provided with holes for the infusion set to pass through, the front side of the cabinet body is provided with an openable cabinet door, and the cabinet door is provided with a transparent area.
8. The parenteral nutrition infusion set infusion test device special for parenteral nutrition according to claim 1, wherein the collection bottles are respectively placed on a weighing device, the weighing device is connected with a communication module, and the communication module is connected to an upper computer.
9. The test method for performing the instantaneous flow test by using the parenteral nutrition dedicated infusion set infusion test device according to any one of claims 1 to 8, is characterized by comprising the following steps:
arranging 1500ml of parenteral nutrient solution samples for test in a sample container;
communicating the top end of the tested infusion apparatus with a sample container, and communicating the bottom end of the tested infusion apparatus with a collecting bottle;
adjusting the infusion apparatus to a speed of 50 +/-10 drops/min through a flow regulator, and obtaining the average flow and the instant flow stability of the 1500ml test parenteral nutrient solution sample at the speed;
wherein the average flow rate is given by the following formula:
Qm＝Vm/Tm；
qm is the average flow, vm is the total volume of the parenteral nutrient solution sample output by the infusion apparatus, and Tm is the time required by the infusion apparatus to output the total volume Vm of the parenteral nutrient solution sample;
the instantaneous flow stability is given by the following formula:
r is the instantaneous flow stability, qi is the instantaneous flow;
Qi＝Vi/Ti；
vi is the volume of the parenteral nutrient solution sample output by the infusion apparatus within a certain time period, and Ti is the time required by the infusion apparatus to output the parenteral nutrient solution sample volume Vi;
and starting the disordered vibration device, and repeating the steps in the disordered vibration state.
10. The test method for performing the flow rate reduction test by using the parenteral nutrition dedicated infusion set infusion test device according to any one of claims 1 to 8, is characterized by comprising the following steps:
arranging fat-containing milk nutrient solution with volume more than 1500ml in a sample container;
communicating the top end of the tested infusion apparatus with a sample container, and communicating the bottom end of the tested infusion apparatus with a collecting bottle;
the transfusion device infuses nutrient solution containing fat emulsion for 10min under 1m static head, and the flow rate is Q1;
after the transfusion device infuses 500ml of the fat-containing emulsion nutrient solution at the speed of 50 +/-10 drops/min, the transfusion device infuses the fat-containing emulsion nutrient solution for 10min at the static head of 1m, and the flow rate is Q2;
after the infusion apparatus infuses 1500ml of fat-containing emulsion nutrient solution at the speed of 50 +/-10 drops/min, the infusion apparatus infuses the fat-containing emulsion nutrient solution for 10min at the static head of 1m, and the flow rate is Q3;
the rate of flow reduction at the time of completion of 500ml of normal infusion was obtained according to the following formula:
the rate of flow reduction at 1500ml completion of normal infusion was obtained according to the following formula:
and starting the disordered vibration device, and repeating the steps in the disordered vibration state.
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