CN219847642U - Self-locking device for preventing self-flowing of liquid injection pump - Google Patents

Abstract

The utility model relates to the technical field of infusion pump medicine box devices, and provides an anti-self-flow self-locking device of an infusion pump, which comprises a medicine box, wherein the medicine box comprises an upper medicine box shell and a lower medicine box shell, a liquid bag is assembled between the upper medicine box shell and the lower medicine box shell and is connected with an infusion tube, a pipeline fixing plate for installing the infusion tube is arranged in the upper medicine box shell, a self-locking module matched with the infusion tube is arranged on the pipeline fixing plate, the self-locking module is one of a second self-locking module, a first self-locking module and a third self-locking module, and comprises a pipeline limiting plate and a pipeline clamping piece.

Description

Self-locking device for preventing self-flowing of liquid injection pump

Technical Field

The utility model relates to the technical field of liquid injection pump medicine box devices, in particular to an anti-self-flowing self-locking device of a liquid injection pump.

Background

The infusion pump is a medical device for injecting medicines or medicaments into a patient, is applied to various medical places such as postoperative pain, tumor chemotherapy, painless delivery and the like, and generally comprises a driving device and a liquid storage device, wherein after the driving device and the liquid storage device are matched, a valve part of the infusion pump is always in a cut-off state, so that no free flow phenomenon of liquid medicine is ensured, and medical staff can lock or unlock the liquid storage device through a key.

In the actual use process, because of the misoperation of medical staff or family members, the risk that the liquid storage device is separated from the driving device exists, the valve part of the liquid injection pump can be separated from a cut-off state, the normal conveying of liquid medicine is influenced, and even the phenomenon of self-flowing liquid leakage occurs. The infusion pipeline is provided with a common flow stopping clamp, but the opening and closing of the infusion pipeline need manual operation, if misoperation is accidentally taken down during infusion, or the flow stopping clamp is not closed in time or is forgotten to be closed when the driving device and the liquid storage device are separated, the patient can automatically flow and leak liquid under the action of gravity due to the fact that the patient is lower than the height of the infusion pump, so that the patient can excessively infuse the medicine, and even the life of the patient can be endangered when the situation is serious.

Disclosure of Invention

Based on the problems, the utility model aims to provide an anti-self-flowing self-locking device of a liquid injection pump, which aims at overcoming the defects of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the self-flow-preventing self-locking device of the infusion pump comprises a medicine box, wherein the medicine box comprises an upper medicine box shell and a lower medicine box shell, a liquid bag is assembled between the upper medicine box shell and the lower medicine box shell, and the liquid bag is connected with an infusion tube;

the first self-locking module comprises a first pipeline limiting plate connected to the pipeline fixing plate, a first pipeline clamping piece matched with the first pipeline limiting plate is arranged below the first pipeline limiting plate, and the first pipeline clamping piece is arranged on the pipeline fixing plate;

the second self-locking module comprises a second pipeline limiting plate connected to the pipeline fixing plate, a second pipeline clamping piece matched with the second pipeline limiting plate is arranged below the second pipeline limiting plate, the second pipeline clamping piece is connected to the upper shell of the medicine box through a second fixing frame, and a torsion spring is arranged between the second pipeline clamping piece and the second fixing frame;

the third self-locking module comprises a third pipeline limiting plate connected to the pipeline fixing plate, a third pipeline clamping piece matched with the third pipeline limiting plate is arranged below the third pipeline limiting plate, the third pipeline clamping piece is matched with the lower end of the pipeline fixing plate through a spring, and the third pipeline clamping piece is connected to the upper shell of the medicine box through a third fixing frame.

As a further improvement of the utility model, the pipeline fixing plate is provided with a fixing groove for fixing the infusion tube.

As a further improvement of the utility model, the upper end of the first pipeline clamping piece is provided with a first transmission piece, the middle part of the first pipeline clamping piece is provided with a first extrusion part for sealing the infusion tube, and the lower end of the first pipeline clamping piece is provided with a fixing piece.

As a further improvement of the utility model, the pipeline fixing plate is provided with a fixing hole, and the first pipeline clamping piece is arranged on the pipeline fixing plate through the matching of the fixing piece and the fixing hole.

As a further improvement of the utility model, the second pipeline clamping piece is provided with a second extrusion part for sealing the infusion tube, and the second extrusion part is provided with a second transmission piece.

As a further improvement of the utility model, the pipeline fixing plate is fixedly connected with the second fixing frame through a second screw, the second fixing frame is positioned and installed on the upper shell of the medicine box through a second positioning column, and the second pipeline clamping piece, the second fixing frame and the torsion spring are connected through a second pin.

As a further improvement of the utility model, a third transmission part is arranged at the upper end of the third pipeline clamping part, a third extrusion part for sealing the infusion tube is arranged in the middle of the third pipeline clamping part, and a clamping part spring groove is arranged at the lower end of the third pipeline clamping part.

As a further development of the utility model, the third pressing part is provided with a conical pressing part.

As a further improvement of the utility model, the lower end of the pipeline fixing plate is provided with a fixing plate spring groove, and the clamping piece spring groove is matched with the fixing plate spring groove to finish the accommodation of the spring.

As a further improvement of the utility model, the pipeline fixing plate is fixedly connected with a third fixing frame through a third screw, the third fixing frame is positioned and installed on the upper shell of the medicine box through a third positioning column, and the third fixing frame is connected with a third pipeline clamping piece through a third pin.

The beneficial effects of the utility model are as follows:

1. the self-locking module matched with the infusion tube is arranged on the pipeline fixing plate, and is one of the first self-locking module, the second self-locking module and the third self-locking module, and comprises the pipeline limiting plate and the pipeline clamping piece which are matched with each other, the pipeline clamping piece has an automatic resetting function, when the liquid storage device and the driving device are normally combined, the pipeline clamping piece is extruded by the driving device and does not press the infusion tube, when the liquid storage device and the driving device are abnormally separated or are not timely clamped when the liquid storage device and the driving device are normally separated, the pipeline clamping piece resets to automatically extrude the infusion tube, so that the liquid medicine is prevented from flowing and leaking, the patient is ensured not to excessively infuse the medicine, the life safety of the patient is ensured, and the waste of the liquid medicine is avoided.

2. According to the self-locking device, the first pipeline clamping piece with an integrated structure is adopted in the first self-locking module, the clamping piece is contacted with the driving device through the upper end transmission piece, connection with the pipeline fixing plate is completed through the lower end fixing piece, extrusion sealing of the infusion tube is completed by utilizing self deformation elasticity, multiple functions are realized by one part, the whole structure of the self-locking module is simpler, and the processing difficulty and the assembly difficulty of the self-locking device are reduced.

3. The torsion spring and the pin are adopted in the second self-locking module to drive the second pipeline clamping piece to rotate, the torsion force of the torsion spring structure is larger, the torsion spring is not easy to deform, the stress of the clamping piece is more stable, the clamping piece is connected to the upper shell of the medicine box through the second fixing frame, the torsion spring does not influence the structure on the pipeline fixing plate when the clamping piece is forced, the self-locking module is more stable in structure and higher in self-locking precision.

4. In the third self-locking module, the spring grooves for accommodating the springs are formed in the lower ends of the third pipeline clamping piece and the pipeline fixing plate, and the clamping piece and the fixing plate are of horizontal structures, so that the installed springs are in a vertical state, the stress direction is stable, the deflection is not easy to happen, the conical extrusion piece is arranged on the third extrusion part, the extrusion sealing of the infusion tube is easier to finish, the locking effect of the self-locking structure on the infusion tube is better, and the performance is more stable.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of the overall structure of a first self-locking module solution.

FIG. 2 is a schematic diagram of the structure of the portion I in FIG. 1.

Fig. 3 is a schematic view of a first pipe clamping member.

Fig. 4 is a schematic diagram of a first self-locking module scheme combined state structure.

FIG. 5 is a schematic view of the structure of section II in FIG. 4.

Fig. 6 is a sectional view showing the assembled state of the first self-locking module scheme.

Fig. 7 is an exploded view of the overall structure of the second self-locking module solution.

Fig. 8 is a schematic structural view of a second pipe clamping member.

FIG. 9 is a schematic diagram of a second self-locking module scheme assembled state.

Fig. 10 is a schematic view of the part iii of fig. 9.

FIG. 11 is a sectional view showing the assembled state of the second self-locking module scheme.

Fig. 12 is an exploded view of the overall structure of the third self-locking module solution.

Fig. 13 is a schematic view of a third pipe clamp.

Fig. 14 is a schematic diagram of the structure of the upper shell of the third self-locking module scheme medicine box.

FIG. 15 is a schematic view of a third self-locking module scheme assembled state.

FIG. 16 is a schematic view of the portion IV of FIG. 15.

Fig. 17 is a sectional view showing a third self-locking module solution assembled.

In the figure: 1 is a medicine box upper shell, 2 is a medicine box lower shell, 3 is a liquid bag, 4 is a transfusion tube, 5 is a pipeline fixing plate, 6 is a fixing groove, 7 is a first pipeline limiting plate, 8 is a first pipeline clamping piece, 801 is a first transmission piece, 802 is a first extrusion part, 803 is a fixing piece, 9 is a fixing hole, 10 is a second pipeline limiting plate, 11 is a second pipeline clamping piece, 1101 is a second extrusion part, 1102 is a second transmission piece, 12 is a second fixing frame, 13 is a torsion spring, 14 is a second screw, 15 is a second positioning column, 16 is a second pin, 17 is a third pipeline limiting plate, 18 is a third pipeline clamping piece, 1801 is a third transmission piece, 1802 is a third extrusion part, 1803 is a clamping piece spring groove, 1804 is a conical extrusion piece, 19 is a spring, 20 is a third fixing frame, 21 is a fixing plate spring groove, 22 is a third screw, 23 is a third pin, and 24 is a third positioning column.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, the self-locking device for preventing the infusion pump from automatically flowing comprises a medicine box, wherein the medicine box comprises an upper medicine box shell 1 and a lower medicine box shell 2, a liquid bag 3 is assembled between the upper medicine box shell 1 and the lower medicine box shell 2, and the liquid bag 3 is connected with an infusion tube 4, and the self-locking device is characterized in that a pipeline fixing plate 5 for installing the infusion tube 4 is arranged in the upper medicine box shell 1, a self-locking module matched with the infusion tube 4 is arranged on the pipeline fixing plate 5, and the self-locking module is one of a first self-locking module, a second self-locking module and a third self-locking module;

the first self-locking module comprises a first pipeline limiting plate 7 connected to the pipeline fixing plate 5, a first pipeline clamping piece 8 which is matched with the first pipeline limiting plate 7 to extrude and fix the infusion tube 4 is arranged below the first pipeline limiting plate 7, and the first pipeline clamping piece 8 is arranged on the pipeline fixing plate 5;

the second self-locking module comprises a second pipeline limiting plate 10 connected to the pipeline fixing plate 5, a second pipeline clamping piece 11 matched with the second pipeline limiting plate 10 for extrusion fixing of the infusion tube 4 is arranged below the second pipeline limiting plate 10, the second pipeline clamping piece 11 is connected to the upper shell 1 of the medicine box through a second fixing frame 12, and a torsion spring 13 for driving the second pipeline clamping piece 11 to rotate is arranged between the second pipeline clamping piece 11 and the second fixing frame 12;

the third self-locking module comprises a third pipeline limiting plate 17 connected to the pipeline fixing plate 5, a third pipeline clamping piece 18 matched with the third pipeline limiting plate 17 for fixing the infusion tube 4 in an extrusion mode is arranged below the third pipeline limiting plate 17, the third pipeline clamping piece 18 is matched with the lower end of the pipeline fixing plate 5 through a spring 19, the third pipeline clamping piece 18 is connected to the upper shell 1 of the medicine box through a third fixing frame 20, and the third pipeline clamping piece 18 is reset in a rotating mode relative to the third fixing frame 20 through the elastic force of the spring 19.

In a specific embodiment, further, the pipe fixing plate 5 is provided with a fixing groove 6 for fixing the infusion pipe 4, the internal shape of the fixing groove 6 is the same as the shape of the pipe body of the infusion pipe 4, and the fixing groove 6 can be set according to the number and the position of the infusion pipe 4.

In a specific embodiment, further, a first transmission member 801 for contacting with the infusion pump driving device is disposed at the upper end of the first pipe clamping member 8, a first extrusion portion 802 for extruding and sealing the infusion tube 4 is disposed in the middle of the first pipe clamping member 8, a fixing member 803 is disposed at the lower end of the first pipe clamping member 8, and the first pipe clamping member 8 uses the fixing member 803 mounted on the pipe fixing plate 5 as a fulcrum, and utilizes the lever principle to complete extrusion sealing of the infusion tube through self deformation elasticity.

In a specific embodiment, further, the pipe fixing plate 5 is provided with a fixing hole 9, and the first pipe clamping member 8 is mounted on the pipe fixing plate 5 through the cooperation of the fixing member 803 and the fixing hole 9.

In a specific embodiment, further, a second pressing portion 1101 for pressing and closing the infusion tube 4 is provided on the second tube clamping member 11, and a second transmission member 1102 for contacting with the infusion pump driving device is provided on the second pressing portion 1101.

In a specific embodiment, further, the pipe fixing plate 5 is fixedly connected with the second fixing frame 12 through a second screw 14, the second fixing frame 12 is positioned and installed on the upper shell 1 of the medicine box through a second positioning column 15, the second pipe clamping piece 11, the second fixing frame 12 and the torsion spring 13 are installed in series through a second pin 16, and after connection is completed, the second pipe clamping piece 11 is driven to rotate around the second pin 16 through the elasticity of the torsion spring 13.

In a specific embodiment, further, a third transmission member 1801 for contacting with the driving device of the infusion pump is disposed at the upper end of the third pipe clamping member 18, a third pressing portion 1802 for pressing and sealing the infusion tube 4 is disposed in the middle of the third pipe clamping member 18, and a clamping member spring slot 1803 for accommodating the spring 19 and the elastic force of the transmission spring 19 is disposed at the lower end of the third pipe clamping member 18.

In a specific embodiment, further, the third pressing portion 1802 is provided with a tapered pressing portion 1804, and the tapered pressing portion 1804 can perform pressing and sealing on the infusion tube 4 with a smaller pressing force, and the sealing effect is more excellent.

In a specific embodiment, further, the lower end of the pipe fixing plate 5 is provided with a fixing plate spring slot 21 for accommodating and supporting the spring 19, and the clamping piece spring slot 1803 cooperates with the fixing plate spring slot 21 to accommodate and squeeze the spring 19, so that the rotation and the reset of the clamping piece are completed by the elastic force of the spring 19.

In a specific embodiment, further, the pipe fixing plate 5 is fixedly connected with the third fixing frame 20 through a third screw 22, the third fixing frame 20 is positioned and installed on the upper shell 1 of the medicine box through a third positioning column 24, the third fixing frame 20 and the third pipe clamping piece 18 are installed in series through a third pin 23, and after the installation is completed, the third pipe clamping piece 18 is driven to rotate around the third pin 23 through the elastic force of the spring 19.

The specific workflow of the first self-locking module technical scheme is as follows: when the infusion pump is normally used, the infusion pump self-locking device is assembled with the infusion pump driving device, at the moment, the first transmission piece 801 is contacted with the bottom surface of the infusion pump driving device, the infusion pump driving device is extruded and deformed, and drives the first extrusion part 802 to deform, so that the extrusion and sealing of the infusion tube 4 are released by the first extrusion part 802, and the infusion pump normally infuses medicines to a patient; when the injection pump self-locking device is separated from the injection pump driving device, the injection pump driving device loosens extrusion of the first transmission part 801, the first transmission part 801 resets under the action of self elasticity, and meanwhile the first extrusion part 802 is driven to deform, so that the first extrusion part 802 extrudes and seals the infusion tube 4, at the moment, liquid medicine in the infusion tube 4 cannot flow out, and the phenomenon of self-flowing liquid leakage is avoided.

The specific workflow of the second self-locking module technical scheme is as follows: when the infusion pump is normally used, the infusion pump self-locking device is assembled with the infusion pump driving device, at the moment, the second transmission piece 1102 is contacted with the bottom surface of the infusion pump driving device, the infused pump driving device extrudes and rotates around the second pin 16, and drives the second extrusion part 1101 to rotate around the second pin 16, so that the extrusion and sealing of the infusion tube 4 are released by the second extrusion part 1101, the infusion pump normally infuses medicines to a patient, at the moment, the torsion spring 13 is extruded and deformed by the second extrusion part 1101, and the elasticity is stored; when the injection pump self-locking device is separated from the injection pump driving device, the injection pump driving device releases the extrusion of the second transmission piece 1102, the torsion spring 13 releases the stored elastic force, the second extrusion part 1101 is pushed to rotate around the second pin 16 for resetting, the second extrusion part 1101 is used for extrusion sealing of the infusion tube 4, at the moment, the liquid medicine in the infusion tube 4 cannot flow out, and the phenomenon of self-flowing and liquid leakage is avoided.

The specific working flow of the technical scheme of the third self-locking module is as follows: when the infusion pump is normally used, the infusion pump self-locking device is assembled with the infusion pump driving device, at the moment, the third transmission piece 1801 is contacted with the bottom surface of the infusion pump driving device, the infused pump driving device extrudes and rotates around the third pin 23, and drives the third extrusion part 1802 and the clamping piece spring groove 1803 to rotate around the third pin 23, so that the extrusion and sealing of the infusion tube 4 are released by the third extrusion part 1802, and the infusion pump normally infuses medicines to a patient, at the moment, the spring 19 is extruded and deformed by the clamping piece spring groove 1803, and the elasticity is stored; when the injection pump self-locking device is separated from the injection pump driving device, the injection pump driving device releases the extrusion of the third transmission piece 1801, the spring 19 releases the stored elastic force, and the clamping piece spring slot 1803 and the third extrusion portion 1802 are driven to rotate around the third pin 23 to reset, so that the third extrusion portion 1802 extrudes and seals the infusion tube 4, at the moment, the liquid medicine in the infusion tube 4 cannot flow out, and the phenomenon of self-flowing and liquid leakage is avoided.

It should be understood that the foregoing detailed description of the present utility model is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present utility model, and those skilled in the art should understand that the present utility model may be modified or substituted for the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.

It should also be noted that relational terms such as second and third, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

Claims (10)

1. The utility model provides a self-locking device is prevented flowing automatically by injection pump, includes the medicine box, the medicine box includes medicine box upper housing (1) and medicine box inferior valve (2), it has liquid bag (3) to assemble between medicine box upper housing (1) and medicine box inferior valve (2), liquid bag (3) are connected with transfer line (4), its characterized in that, be equipped with pipeline fixed plate (5) that are used for installing transfer line (4) in medicine box upper housing (1), be equipped with on pipeline fixed plate (5) with transfer line (4) matched with self-locking module, self-locking module is one of first self-locking module, second self-locking module, third self-locking module;

the first self-locking module comprises a first pipeline limiting plate (7) connected to the pipeline fixing plate (5), a first pipeline clamping piece (8) matched with the first pipeline limiting plate (7) is arranged below the first pipeline limiting plate (7), and the first pipeline clamping piece (8) is arranged on the pipeline fixing plate (5);

the second self-locking module comprises a second pipeline limiting plate (10) connected to the pipeline fixing plate (5), a second pipeline clamping piece (11) matched with the second pipeline limiting plate (10) is arranged below the second pipeline limiting plate (10), the second pipeline clamping piece (11) is connected to the medicine box upper shell (1) through a second fixing frame (12), and a torsion spring (13) is arranged between the second pipeline clamping piece (11) and the second fixing frame (12);

the third self-locking module comprises a third pipeline limiting plate (17) connected to the pipeline fixing plate (5), a third pipeline clamping piece (18) matched with the third pipeline limiting plate (17) is arranged below the third pipeline limiting plate (17), the third pipeline clamping piece (18) is matched with the lower end of the pipeline fixing plate (5) through a spring (19), and the third pipeline clamping piece (18) is connected to the upper shell (1) of the medicine box through a third fixing frame (20).

2. The self-locking device for preventing self-flow of a liquid injection pump according to claim 1, wherein the pipeline fixing plate (5) is provided with a fixing groove (6) for fixing the liquid injection pipe (4).

3. The self-locking device for preventing self-flow of a liquid injection pump according to claim 1, wherein a first transmission part (801) is arranged at the upper end of the first pipeline clamping part (8), a first extrusion part (802) for sealing the liquid injection pipe (4) is arranged in the middle of the first pipeline clamping part (8), and a fixing part (803) is arranged at the lower end of the first pipeline clamping part (8).

4. The self-locking device for preventing self-flow of a liquid injection pump according to claim 3, wherein the pipeline fixing plate (5) is provided with a fixing hole (9), and the first pipeline clamping piece (8) is installed on the pipeline fixing plate (5) through the cooperation of the fixing piece (803) and the fixing hole (9).

5. The self-locking device for preventing self-flow of a liquid injection pump according to claim 1, wherein a second extrusion part (1101) for sealing the liquid injection pipe (4) is arranged on the second pipeline clamping piece (11), and a second transmission piece (1102) is arranged on the second extrusion part (1101).

6. The self-locking device for preventing self-flow of a liquid injection pump according to claim 1, wherein the pipeline fixing plate (5) is fixedly connected with the second fixing frame (12) through a second screw (14), the second fixing frame (12) is positioned and installed on the upper shell (1) of the medicine box through a second positioning column (15), and the second pipeline clamping piece (11), the second fixing frame (12) and the torsion spring (13) are connected through a second pin (16).

7. The self-locking device for preventing self-flow of the infusion pump according to claim 1, wherein a third transmission part (1801) is arranged at the upper end of the third pipeline clamping part (18), a third extrusion part (1802) for sealing the infusion tube (4) is arranged in the middle of the third pipeline clamping part (18), and a clamping part spring groove (1803) is arranged at the lower end of the third pipeline clamping part (18).

8. The self-locking device of an infusion pump according to claim 7, wherein the third squeeze portion (1802) is provided with a tapered extrusion (1804).

9. The self-locking device for preventing self-flow of a liquid injection pump according to claim 7, wherein a fixed plate spring groove (21) is arranged at the lower end of the pipeline fixed plate (5), and the clamping piece spring groove (1803) is matched with the fixed plate spring groove (21) to accommodate the spring (19).

10. The self-locking device for preventing self-flow of a liquid injection pump according to claim 1, wherein the pipeline fixing plate (5) is fixedly connected with a third fixing frame (20) through a third screw (22), the third fixing frame (20) is positioned and installed on the upper shell (1) of the medicine box through a third positioning column (24), and the third fixing frame (20) is connected with a third pipeline clamping piece (18) through a third pin (23).