CN213219963U

CN213219963U - Double-insertion type infusion apparatus with accurate measurement

Info

Publication number: CN213219963U
Application number: CN202021655014.4U
Authority: CN
Inventors: 卢婷; 李显丽
Original assignee: Sichuan Provincial Peoples Hospital
Current assignee: Sichuan Provincial Peoples Hospital
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-05-18
Anticipated expiration: 2030-08-11

Abstract

The utility model provides an accurate two formula transfusion system of inserting of measurement relates to medical instrument technical field, and it includes the transfer line and connects in the intravenous transfusion needle of transfer line one end, and the one end that the intravenous transfusion needle was kept away from to the transfer line is passed through Y type pipeline joint and is connected first feed liquor pipe and second feed liquor pipe, is connected with the graduated flask on the first feed liquor pipe, and the feed liquor end of graduated flask is provided with automatically controlled valve. The lower part of graduated flask is provided with the tray, is fixed with annular weighing sensor in the tray, and on annular weighing sensor was arranged in to the graduated flask, fixedly connected with pipe clamp on the tray, annular weighing sensor and automatically controlled valve connected on the control chip, are connected with display screen, zero key and threshold value input key on the control chip. Solves the problem that the prior bag type transfusion device can not accurately control the transfusion quantity in the transfusion process.

Description

Double-insertion type infusion apparatus with accurate measurement

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a double-insertion infusion apparatus with accurate measurement.

Background

Intravenous infusion refers to the intravenous infusion method in which a large amount of liquid, electrolytes or blood is injected intravenously, and since intravenous infusion is easy to achieve the therapeutic concentration of a drug, can continuously maintain a constant concentration required by the therapeutic effect, and can rapidly achieve the therapeutic effect of the drug, intravenous infusion is widely used clinically.

The control of the dosage in the infusion process directly relates to the treatment efficacy and the life safety of patients, but the bag type infusion apparatus or the straight tube infusion apparatus which are commonly used in clinic cannot effectively estimate the infused dosage of the patients. For example, for patients with large-area cerebral infarction or cerebral hemorrhage, 125-250 ml of 20% mannitol solution is mostly adopted, and intracranial pressure is controlled by rapid instillation and dehydration for 10-20 minutes. Mannitol can promote brain tissue dehydration by regulating blood plasma osmotic pressure, thereby achieving the purpose of treating cerebral edema. However, the research shows that the total effective rate of 100.00 percent of the mannitol treatment in the half dose (125ml) is higher than 66.67 percent of the mannitol treatment in the full dose (250ml), and the adverse reaction rate of 8.33 percent of the mannitol in the half dose is lower than 22.92 percent of the mannitol treatment in the full dose.

Therefore, 125ml intravenous drip is usually adopted in clinic, however, at present, mannitol produced by manufacturers is 250ml whether being a soft package infusion bag or a glass bottle infusion bag, in clinic, medical workers mostly adopt mark identification at a half dosage of mannitol external package, practice proves that the method cannot guarantee accurate mannitol infusion dosage, mannitol easily causes kidney damage, and dosage accuracy is of utmost importance.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned problem among the prior art, the utility model provides a measure accurate two formula transfusion system of inserting has solved current bag type transfusion system and can not be at the problem of the infusion volume of infusion in-process accurate control.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows:

the utility model provides a measure accurate two formula transfusion system of inserting, it includes the transfer line and connects in the intravenous transfusion needle of transfer line one end, and the one end that the intravenous transfusion needle was kept away from to the transfer line passes through Y type pipeline joint and connects first feed liquor pipe and second feed liquor pipe, is connected with the graduated flask on the first feed liquor pipe, and the feed liquor end of graduated flask is provided with electric control valve. The lower part of graduated flask is provided with the tray, is fixed with annular weighing sensor in the tray, and on annular weighing sensor was arranged in to the graduated flask, fixedly connected with pipe clamp on the tray, annular weighing sensor and automatically controlled valve connected on the control chip, are connected with display screen, zero key and threshold value input key on the control chip.

The utility model has the advantages that: can select first feed liquor pipe or second feed liquor pipe to carry out liquid infusion according to patient's transfusion volume requirement, first feed liquor pipe is used for infusing the liquid that needs the accurate control dosage, and second feed liquor pipe is used for infusing ordinary liquid, and the change of first feed liquor pipe and second feed liquor pipe only need simply close a passageway open another passageway can, the simple operation.

The first liquid inlet pipe is provided with a measuring cylinder, the measuring cylinder is arranged on an annular weighing sensor in the tray, the weighing sensor can detect the mass variation of the measuring cylinder, an electric control valve arranged at the liquid inlet end of the measuring cylinder is closed by a controller after the mass variation reaches a manually set threshold value, further infusion of liquid medicine into the measuring cylinder is stopped, the aim of accurately controlling the dosage in the measuring cylinder is achieved, and the liquid medicine is infused into the vein of a patient through an infusion tube after the dosage is accurate; simultaneously, the scale marks on the measuring cylinder can assist in judging whether the liquid medicine entering the measuring cylinder is accurate or not, so that wrong liquid medicine is prevented from being infused when the weighing sensor fails, and reliability and safety are improved.

Drawings

Fig. 1 is a schematic structural diagram of a double-insertion infusion apparatus with accurate metering.

Fig. 2 is a sectional view taken along a-a in fig. 1.

Fig. 3 is a left side view of the control box of fig. 1.

Wherein, 1, an infusion tube; 2. an intravenous infusion needle; 3. a Y-shaped pipeline joint; 4. a first liquid inlet pipe; 5. a second liquid inlet pipe; 6. a measuring cylinder; 7. a tray; 71. perforating the tube holes; 72. an annular flange; 73. an extension plate; 8. an annular weighing sensor; 9. a pipe clamp; 91. a first clamp body; 92. a second clip body; 93. a rubber pad; 10. an electrically controlled valve; 11. a puncture instrument; 12. a manual water stop clip; 13. a screw interface; 14. a flow regulator; 15. a precision filter; 16. a Murphy's dropper; 17. a control box; 18. a display screen; 19. a return-to-zero key; 20. a threshold input key.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes will be apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all inventions contemplated by the present invention are protected.

As shown in figure 1, the double-insertion type infusion apparatus with accurate measurement comprises an infusion tube 1 and an intravenous infusion needle 2 connected to one end of the infusion tube 1, one end, far away from the intravenous infusion needle 2, of the infusion tube 1 is connected with a first liquid inlet pipe 4 and a second liquid inlet pipe 5 through a Y-shaped pipeline joint 3, a measuring cylinder 6 is connected onto the first liquid inlet pipe 4, and an electric control valve 10 is arranged at the liquid inlet end of the measuring cylinder 6.

The lower part of the measuring cylinder 6 is provided with a tray 7, an annular weighing sensor 8 is fixed in the tray 7, the measuring cylinder 6 is arranged on the annular weighing sensor 8, a pipe clamp 9 is fixedly connected to the tray 7, the annular weighing sensor 8 and an electric control valve 10 are connected to a control chip, and a display screen 18, a zero return key 19 and a threshold input key 20 are connected to the control chip.

Because the measuring cylinder 6 measures is the volume of liquid medicine, medical personnel go through the scale mark on the measuring cylinder to judge whether the liquid medicine reaches the dose that needs, whether the sight flushes with the liquid level and whether the axis of measuring cylinder 6 is perpendicular all can direct influence the accuracy nature of liquid medicine when medical personnel's reading, lead to causing the liquid medicine volume to be inaccurate very easily. The measuring cylinder 6 is placed on the annular weighing sensor 8, the weight change of the measuring cylinder 6 is measured by the annular weighing sensor 8 to reach a threshold value to judge the dosage, medical staff can input required liquid medicine into the controller through the threshold value input key 20 according to clinical experience (usually, the density and the volume of the liquid medicine are required to be input simultaneously, so that the controller can obtain the weight variation of the liquid medicine according to different liquid medicines), before the liquid medicine is infused into the measuring cylinder 6, the controller identifies the weight measured by the annular weighing sensor 8 at the moment to be zero through the zero return key 19, then the liquid medicine is infused through the first liquid inlet pipe 4, the liquid medicine can increase the weight of the measuring cylinder 6 until the weight reaches the manually input threshold value, the controller controls the electric control valve 10 to block the first liquid inlet pipe 4 to continue infusing the liquid medicine, so that the liquid medicine in the measuring cylinder 6 is the clinically required liquid medicine, and finally, the manual clamp 12 below the measuring cylinder 6 is opened to convey the liquid medicine in the measuring cylinder 6 In (1).

The end parts of the first liquid inlet pipe 4 and the second liquid inlet pipe 5 are both connected with a puncture outfit 11, the puncture outfit 11 is inserted into an infusion bag or an infusion bottle, and the puncture outfit 11 is protected by a protective sleeve when not in use. The first liquid inlet pipe 4 and the second liquid inlet pipe 5 which are adjacent to the puncture outfit 11 are both connected with a manual water stop clamp 12. A spiral connector 13, a manual water stop clamp 12, a flow regulator 14, a precision filter 15 and a Murphy's dropper 16 are sequentially connected between the intravenous infusion needle 2 and the Y-shaped pipeline joint 3 on the infusion tube 1. The puncture outfit 11 and the manual water stop clamp 12 are both the puncture outfit 11 and the manual water stop clamp 12 on the conventional infusion set. First feed liquor pipe 4 and second feed liquor pipe 5 are two inlet channel of mutual independence, can select its a pair of patient to infuse according to clinical actual demand, make the operation more convenient.

The middle part of the tray 7 is provided with a through hole 71 for the first liquid inlet pipe 4 to pass through. The annular weighing sensor 8 is embedded in the bottom plate of the tray 7, and the shaft hole of the annular weighing sensor 8 is coaxially arranged with the pipe penetrating hole 71. The ring-shaped load cell 8 is a compact BURSTER miniature ring-shaped load cell, the bottom surface of the measuring cylinder 6 is completely placed on the whole surface of the detection inner band of the ring-shaped load cell 8, the conversion of the force into an electrical output signal is performed by strain gauges connected together in a full bridge circuit, and for optimum accuracy, the supporting bottom surface of the tray 7 on which the ring-shaped load cell 8 is mounted should be a smooth horizontal surface and hardened to at least 63HRC with sufficient dimensions.

The measuring cylinder 6 is arranged on the annular weighing sensor 8, and the first liquid inlet pipe 4 connected to the lower portion of the measuring cylinder 6 penetrates out of the shaft hole and the through hole 71 of the annular weighing sensor 8 and does not contact with the hole wall, so that the measuring accuracy of the annular weighing sensor 8 is prevented from being affected.

An upwardly extending annular flange 72 is provided along the edge of the tray 7. The provision of the annular flange 72 can prevent the outside from interfering with the detection accuracy of the annular load cell 8.

One side of the tray 7 is fixedly connected with the side wall of the pipe clamp 9 through an extension plate 73. Pipe clamps 9 secure the pallet 7 by clamping onto the infusion rod so that the pallet 1 can support the annular load cell 8.

The extension plate 73 is fixed with the control box 17, the control chip is installed in the control box 17, and as shown in fig. 3, the display screen 18, the zero key 19 and the threshold input key 20 are all arranged on the control box 17. The control chip is preferably an STM32F103RDT6 single-chip microcomputer chip, the threshold input key 20 comprises a numeric key, a confirmation key, a page turning key and the like, the density value and the threshold value of the liquid medicine can be input through the threshold input key 20, the threshold value is a volume value used by clinical practice, and the input volume threshold value is converted into a mass value corresponding to the mass value obtained by the weighing sensor through the control chip in combination with the density of the liquid medicine. Since the measuring cylinder 6 has an initial weight when placed on the load cell, the zero key 19 is used to identify this initial weight as a zero value.

As shown in fig. 2, the pipe clamp 9 includes a first clamp body 91 and a second clamp body 92 which are oppositely arranged, one end of the first clamp body 91 is pivotally connected with one end of the second clamp body 92, the other end of the first clamp body is connected with the other end of the second clamp body 92 through a threaded fastener, rubber pads 93 are fixed on clamping surfaces of the first clamp body 91 and the second clamp body 92, and the tray 7 is fixedly connected to an outer wall surface of the first clamp body 91 or the second clamp body 92 along a radial direction. The first clamp 91 and the second clamp 92 are clamped on the infusion tube around the axial direction of the infusion tube and are connected through threaded connectors such as bolts with nuts, and the rubber pads 93 can increase the friction force between the first clamp 91 and the second clamp 92 and the infusion tube, so that the fixation is firmer.

Claims

1. The double-insertion type infusion apparatus with accurate measurement comprises an infusion tube (1) and a venous infusion needle (2) connected to one end of the infusion tube (1), and is characterized in that one end, far away from the venous infusion needle (2), of the infusion tube (1) is connected with a first liquid inlet pipe (4) and a second liquid inlet pipe (5) through a Y-shaped pipeline joint (3), the first liquid inlet pipe (4) is connected with a measuring cylinder (6), and the liquid inlet end of the measuring cylinder (6) is provided with an electric control valve (10);

the lower part of graduated flask (6) is provided with tray (7), tray (7) internal fixation has annular weighing sensor (8), graduated flask (6) are arranged in on annular weighing sensor (8), fixedly connected with pipe clamp (9) on tray (7), annular weighing sensor (8) and electrically controlled valve (10) are connected on the control chip, be connected with display screen (18), zero key (19) and threshold value input key (20) on the control chip.

2. The double-insertion accurately-metered infusion set according to claim 1, wherein the ends of the first liquid inlet pipe (4) and the second liquid inlet pipe (5) are both connected with a puncture outfit (11), and the first liquid inlet pipe (4) and the second liquid inlet pipe (5) adjacent to the puncture outfit (11) are both connected with a manual water stop clamp (12).

3. The double-insertion infusion set with accurate metering according to claim 1, characterized in that a spiral connector (13), a manual water stop clamp (12), a flow regulator (14), a precision filter (15) and a Murphy's dropper (16) are sequentially connected on the infusion tube (1) from the intravenous infusion needle (2) to the Y-shaped pipeline joint (3).

4. The double-insertion accurately-metered infusion set according to claim 1, wherein a perforation hole (71) for the first liquid inlet pipe (4) to pass through is formed in the middle of the tray (7).

5. Double-insertion accurately metered infusion set according to claim 1, characterised in that the annular weighing cell (8) engages in the base plate of the tray (7), an upwardly extending annular flange (72) being provided along the edge of the tray (7).

6. The double-insertion accurately-metered infusion set according to claim 1, characterized in that one side of the tray (7) is fixedly connected with the side wall of the tube clamp (9) through an extension plate (73), and a control box (17) is fixed on the extension plate (73).

7. The double-insertion accurately-metered infusion set according to claim 6, wherein the control chip is mounted in the control box (17), and the display screen (18), the zero-return key (19) and the threshold input key (20) are all arranged on the control box (17).

8. The double-insertion type infusion set with accurate metering according to claim 1, wherein the tube clamp (9) comprises a first clamp body (91) and a second clamp body (92) which are arranged oppositely, one end of the first clamp body (91) is connected with one end of the second clamp body (92) in a pivot mode, the other end of the first clamp body is connected with the other end of the second clamp body (92) through a threaded fastener, rubber pads (93) are fixed on clamping surfaces of the first clamp body (91) and the second clamp body (92), and the tray (7) is fixedly connected to the outer wall surface of the first clamp body (91) or the second clamp body (92) in the radial direction.