CN111407964A - Liquid stopping device and infusion pump - Google Patents

Abstract

The invention discloses a liquid stopping device, which comprises a liquid stopping slide block, a fixed platform, an elastic element, a first support rod and a base, wherein the liquid stopping slide block is arranged on the base in a sliding manner along a first direction, the liquid stopping slide block comprises a first side and a second side which are oppositely arranged in the first direction, a guide rail is arranged on the liquid stopping slide block, two ends of the elastic element are respectively connected with the base and the first side, one end of the first support rod is rotatably connected with the base, the other end of the first support rod is slidably connected with the guide rail, when the first support rod rotates, the other end of the first support rod slides along the guide rail to drive the liquid stopping slide block to move in the first direction, when the first support rod rotates to be parallel to the first direction, the liquid stopping slide block and the fixed platform are arranged at intervals in the first direction to form a channel for a liquid infusion tube to pass through, an operator can place the liquid stopping slide block in the, the channel is closed, and the purpose of stopping liquid is achieved. The device has the advantages of reasonable design, simple structure, convenient maintenance and lower cost.

Description

Liquid stop device and infusion pump

technical field

The invention relates to the technical field of medical devices, in particular to a liquid stop device and an infusion pump.

Background technique

In the current field of clinical medicine, the traditional manual infusion method has been broken through, and automatic infusion is realized by using an automatic infusion device with an infusion pump as the main body. Under normal circumstances, the infusion pump needs to be equipped with a liquid stop device to achieve the function of stopping the flow of the liquid in the infusion tube under certain circumstances. There are many types of liquid stop devices on the market. Although they have the function of stop liquid, they generally have problems such as complex structure, high manufacturing cost, and difficulty in maintenance and installation.

SUMMARY OF THE INVENTION

In view of the above existing technical problems, the present application provides a liquid stop device and an infusion pump with simple structure, convenient maintenance and low cost.

On the one hand, the technical solution provided by the embodiments of the present application is: a liquid-stopping device, comprising a liquid-stopping slider, a fixed platform, an elastic element, a first support rod and a base, and the liquid-stopping slider slides along a first direction is arranged on the base, the liquid stop slider includes a first side and a second side which are oppositely arranged in the first direction, the liquid stop slider is provided with a guide rail, and the two ends of the elastic element are respectively Connected to the base and the first side, one end of the first support rod is rotatably connected to the base, and the other end of the first support rod is slidably connected to the guide rail. When the support rod rotates relative to the base, the other end of the first support rod slides along the guide rail to drive the liquid stop slider to move in the first direction, and the first support rod rotates When parallel to the first direction, the liquid stop slider and the fixed platform are spaced apart in the first direction to form a channel for the infusion tube to pass through.

Preferably, the liquid stop device further comprises a second support rod, the second support rod is connected to one end of the first support rod, and is used to drive the first support rod to rotate.

Preferably, there is an included angle between the second strut and the first strut.

Preferably, the liquid stop device further includes a pump door, the pump door is rotatably connected to the base through a fixed shaft, and the pump door is provided with a pump door that is in contact with the second support rod and the liquid stop slider. contact end.

Preferably, the contact end includes a first contact end and a second contact end, and when the pump door rotates to the closed position, the first contact end contacts the first support rod or the second support rod, so that the first support rod leaves a position parallel to the first direction; the second contact end is used for abutting with the liquid stop slider, and the liquid stop slider is in contact with the second When the contact ends are in contact, the distance between the liquid stop slider and the fixed platform is smaller than the diameter of the infusion tube.

Preferably, the liquid stop slider includes an inclined surface, and after the pump door is rotated to the closed position, the second contact end contacts the inclined surface.

Preferably, the inclined surface is inclined in a direction away from the second contact arm in a direction in which the first side points to the second side.

Preferably, the guide rail is a groove formed on the liquid stop slider, the other end of the first support rod is provided with a roller, and the roller is arranged in the guide rail in a rolling manner.

Preferably, the guide rail is an arc guide rail, and the arc guide rail takes the rotation center of the first support rod as a circle center.

On the other hand, an embodiment of the present application also provides an infusion pump, the infusion pump including the liquid stopping device as described above.

The beneficial effect of the present application is that: when the first support rod rotates relative to the base, one end of the first support rod slides along the guide rail to drive the liquid stop slider to move in the first direction, so that the second side of the liquid stop slider is moved in the first direction. The distance from the fixed platform changes to open or close the channel. When the first strut is rotated to be parallel to the first direction, the stopper slider is positioned, the channel is open, and the operator can place the infusion tube in the channel. , when the first strut leaves the position parallel to the first direction, the liquid stop slider is pressed against the fixed platform under the pressure of the elastic element, and the channel is closed. Purpose. The liquid stop device has reasonable design, simple structure, convenient maintenance and low cost.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

in:

1 is a schematic diagram of the overall structure of a liquid stop device in an embodiment of the application;

2 is a schematic diagram of the liquid stop device without a pump door in a natural state according to an embodiment of the application;

3 is a schematic diagram of the liquid stop device in a self-locking state in an embodiment of the application;

4 is a schematic diagram of the liquid stop device in an embodiment of the application when the infusion tube is put into the infusion tube channel;

5 is a schematic diagram of the liquid stop device in an embodiment of the present application when the pump door is about to be closed;

6 is a schematic diagram of the liquid stop device in an embodiment of the present application when the pump door is closed, and the stroke of the liquid stop device is restricted by the pump door;

7 is a schematic diagram of the liquid stop device in an embodiment of the present application in a liquid stop state after the pump door is opened;

Description of reference numerals: liquid stop device 100, liquid stop slider 110, fixed platform 120, elastic element 130, first support rod 140, base 150, guide rail 142, second support rod 141, handle 1411, roller 1412, A rotating shaft 143 , a channel 160 , an inclined surface 111 , a pump door 170 , a fixed shaft 180 , a first contact end 171 , a second contact end 172 , a first contact point 173 , and a second contact point 174 .

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 , the liquid stop device 100 of an embodiment includes a liquid stop slider 110 , a fixed platform 120 , an elastic element 130 , a first support rod 140 and a base 150 .

The liquid stop slider 110 is in the shape of a cube. The liquid stop slider 110 is slidably arranged on the base 150 along the first direction. The base 150 is provided with a sliding channel, the sliding channel extends along the first direction, and the width of the sliding channel is equal to The width of the liquid stop slider 110 is adapted. The liquid stop slider 110 includes a first side and a second side disposed opposite to each other in the first direction. One end of the elastic element 130 is connected to the base 150 , and the other end of the elastic element 130 is connected to the first side of the liquid stop slider 110 . One end of the first support rod 140 is disposed on the base 150 through the first rotating shaft 143 , the liquid stop slider 110 is provided with a guide rail 142 , and the first support rod 140 can rotate with the first rotating shaft 143 . The other end of the 140 can slide along the guide rail 142, thereby driving the liquid stop slider 110 to move in the first direction. When the first support rod 140 is rotated to be parallel to the first direction, the liquid stop slider 110 is positioned, and the liquid stop slider 110 is spaced from the fixed platform 120 in the first direction to form a channel 160 for the infusion tube to pass through. , the operator can place the infusion tube in the channel 160 .

As shown in FIG. 2 , when the liquid-stopping device 100 is in a natural state or an unlocked state, that is, when the first support rod 140 does not exert any force, the elastic element 130 exerts an upward elastic force on the liquid-stopping slider 110 at this time, so that the The second side surface of the liquid stop slider 110 is in contact with the fixed platform 120, the channel 160 is in a tightly closed state, and the infusion tube is in a liquid stop state at this time.

When the liquid stop device 100 rotates relative to the base through the first support rod, one end of the first support rod slides along the guide rail to drive the liquid stop slider to move in the first direction, so that the second side of the liquid stop slider is fixed to the base. The spacing of the platform changes to realize the opening or closing of the channel. When the first support rod is rotated to be parallel to the first direction, the liquid stop slider is positioned and the channel is opened. The operator can place the infusion tube in the channel. The first support rod leaves the position parallel to the first direction, and the liquid stop slider is pressed against the fixed platform under the pressure of the elastic element, and the channel is closed. The liquid stop device has reasonable design, simple structure, convenient maintenance and low cost.

In one embodiment, the fixed platform 120 is disposed on the base 150 , and the fixed platform 120 may also be disposed in the housing of the liquid stop device 100 . The second side surface of the liquid stop slider 110 is kept horizontal with the surface of the fixed platform 120 , and a channel 160 for arranging the infusion tube can be formed between the second side surface of the liquid stop slider 110 and the fixed platform 120 . In another embodiment, the second side surface of the liquid stop slider 110 and the surface of the fixed platform 120 can also be provided with a non-smooth concave-convex structure to increase the frictional force and make the liquid stop effect better when the two are clamped. The diameter of the channel 160 is slightly larger than the outer diameter of the infusion tube.

Of course, the elastic elements 130 may be springs, torsion springs or other objects that can release elastic force, and there may also be multiple elastic elements 130 .

1-2, in one embodiment, the first support rod 140 is rotatably arranged on the base 150 through the first rotating shaft 143, the guide rail 142 is arranged on one side of the liquid stop slider 110, and the first support rod When the 140 rotates, one end of the first support rod 140 moves along the guide rail 142, and exerts a force on the guide rail 142, thereby driving the liquid stop slider 110 to slide. When the first support rod 140 is rotated to be parallel to the first direction, the first support rod 140 will no longer rotate, and the liquid stop slider 110 is positioned, thereby realizing the self-locking function.

In another embodiment, the liquid stop device 100 further includes a second support rod 141 connected to one end of the first support rod 140 for driving the first support rod 140 to rotate. There is an included angle between the second support rod 141 and the first support rod 140 . In one embodiment, the included angle between the second support rod 141 and the first support rod 140 is 90°. The end of the first support rod 140 away from the second support rod 141 moves along the guide rail 142. When the first support rod 140 is rotated to be parallel to the first direction, the liquid stop device 100 is in a self-locking state, and the liquid stop slider 110 is positioned. The channel 160 is open and the operator can place the infusion tube in the channel.

In other embodiments, the included angle between the first support rod 140 and the second support rod 141 can be adjusted to different angles according to factors such as the setting position and force.

In another embodiment, the first support rod 140 is provided with a roller 1412 at one end away from the second support rod 141 , the roller 1412 is rolled in the guide rail 142 , and the second support rod 141 is further away from the first support rod 140 at the end A handle 1411 may be included. When the handle 1411 is stressed, the first support rod 140 can rotate around the first rotation axis 143 , so that the roller 1412 on the first support rod 140 reciprocates along the guide rail 142 .

In one embodiment, the guide rail 142 is a groove formed on the liquid stop slider 110 , the guide rail 142 is an arc guide rail, and the arc guide rail 142 is centered on the rotation center of the first support rod 140 . The rollers 1412 of the first support rod 140 can freely slide on the guide rails 142 , and the structure makes the operation more labor-saving and stable through the cooperation between the rollers 1412 and the guide rails 142 , and takes up less space.

As shown in FIG. 2 , when the liquid stop device 100 is in a natural state or an unlocked state, that is, when the first support rod 140 does not exert any force, the first support rod 140 leaves the position parallel to the first direction, and the elastic The element 130 exerts an upward elastic force on the liquid stop slider 110, so that the second side of the liquid stop slider 110 contacts the fixed platform 120, the channel 160 is in a tightly closed state, and the infusion tube is in a liquid stop state.

As shown in FIG. 3, the operator turns the handle 1411 downward, the first support rod 140 rotates around the first rotation axis 143, and the roller 1412 on the first support rod 140 moves to the side of the guide rail 142 close to the center of the slider , the roller 1412 exerts a downward force on the guide rail 142 to make the liquid stop slider 110 slide downward. When the first support rod 140 is parallel to the first direction, the liquid stop device 100 is in a self-locking state. At this time, the stop liquid slides The distance between the second side of the block 110 and the fixed platform 120 is locked, and the operator can put the infusion tube into the infusion tube channel 160, as shown in FIG. 4 .

In one embodiment shown in FIGS. 5-6 , the liquid stop device 100 of the infusion pump is provided with a pump door 170 , the pump door 170 is rotatably connected to the base 150 through a fixed shaft 180 , and the pump door 170 is provided with a second support The contact end where the rod 141 and the liquid stop slider 110 come into contact. The contact end includes a first contact end 171 and a second contact end 172. When the pump door 170 is rotated to the closed position, the first contact end 171 of the pump door 170 contacts the second support rod 141 to form a first contact point 173. Of course, the first contact point 173 is formed. The first contact end 171 of the pump door 170 can also be in contact with the first support rod 140, so that the first support rod 140 leaves the position parallel to the first direction, at this time, the liquid stop device 100 is released from the self-locking state, and the pump door 170 The second contact end 172 is used for abutting with the liquid stop slider 110, and when the liquid stop slider 110 is in contact with the second contact end 172, the distance between the liquid stop slider 110 and the fixed platform 120 is smaller than that of the infusion tube. At this time, the infusion tube in the channel 160 is not completely clamped and is in a half-open and half-closed state, and the infusion tube can flow liquid. This process is that after the pump door 170 is closed, the liquid stop slider 110 is restricted. The pump starts infusion.

In another embodiment, the liquid stop slider 110 includes an inclined surface 111. After the pump door 170 is rotated to the closed position, the second contact end 172 contacts the inclined surface 111 to form a second contact point 174. The inclined surface 111 is at the first contact point 174. The direction in which one side points to the second side is inclined in a direction away from the second contact arm.

Of course, the inclined surface 111 can be adjusted to different angles to meet the control of different infusion rates. The inclined surface 111 can be protruded and disposed on the side surface where the liquid stop slider 110 cooperates with the pump door 170 . The inclined surface 111 can be disassembled and replaced and the angle can be adjusted to facilitate maintenance. Of course, the inclined surface 111 can also be integrally formed with the liquid stop slider 110 to save cost.

7 , when the infusion pump completes its work, open the pump door 170 , the pump door 170 is rotated around the fixed shaft 180 to the open position, and the second contact end 172 of the pump door 170 is in contact with the inclined surface 111 of the liquid stop slider 110 . The second contact point 174 continuously moves to the right, and the liquid stop slider 110 slides upward under the force of the elastic element 130 . When the pump door 170 is no longer in contact with the liquid stop slider 110, the pump door 170 completes the opening action, and the liquid stop slider 110 slides toward the fixed platform 120 to clamp the infusion tube, so that the pump door 170 is opened to stop the liquid, preventing the The purpose of liquid countercurrent.

After the infusion tube is clamped, if the infusion pump needs to be used in the future, the pump door 170 is closed, and the second contact end 172 of the pump door 170 first contacts the inclined surface 111 of the liquid stop slider 110 to stop the liquid The slider 110 moves downward. When the pump door 170 is completely closed, the liquid stop slider 110 is restricted in its stroke and no longer moves downward. At this time, the infusion tube in the infusion tube channel 160 is in a half-open and half-closed working state, and the infusion The liquid in the tube can flow freely. In this process, the pump door 170 is closed, the infusion tube channel 160 is opened to the limit stroke position, and the infusion tube is restored to the half-open and half-closed working state.

In the above embodiment, when the first support rod rotates relative to the base, one end of the first support rod slides along the guide rail to drive the liquid stop slider to move in the first direction, so that the second side of the liquid stop slider is connected to the fixed platform. The distance changes to realize the opening or closing of the channel. When the first support rod is rotated to be parallel to the first direction, the liquid stop slider is positioned and the channel is opened. The operator can place the infusion tube in the channel. When a rod leaves the position parallel to the first direction, the liquid stop slider is pressed against the fixed platform under the pressure of the elastic element, and the channel is closed. The liquid stop device has reasonable design, simple structure, convenient maintenance and low cost.

The present invention also provides an infusion pump, which includes the above-mentioned liquid stop device 100. The specific structure of the liquid stop device 100 refers to the above-mentioned embodiments. Since the infusion pump adopts all the technical solutions of all the above-mentioned embodiments, it has at least All the beneficial effects brought by the technical solutions of the above embodiments will not be repeated here.

The above disclosures are only the preferred embodiments of the present invention, and of course, the scope of rights of the present invention cannot be limited by this. Under the idea of this application, the technical features of the above embodiments or different embodiments can also be combined. , and there are many other changes in different aspects of the application as described above, and for the sake of brevity, they are not provided in the details, so the equivalent changes made according to the claims of the present invention still belong to the scope covered by the present invention.

Claims (10)

1. A liquid stop device, characterized in that it comprises: a liquid stop slider, a fixed platform, an elastic element, a first support rod and a base, and the liquid stop slider is slidably arranged on the base along a first direction. On the seat, the liquid stop slider includes a first side and a second side oppositely arranged in the first direction, and a guide rail is provided on the liquid stop slider; Two ends of the elastic element are respectively connected to the base and the first side; one end of the first support rod is rotatably connected to the base, and the other end of the first support rod is slidably connected to the base. the guide rail, when the first support rod rotates relative to the base, the other end of the first support rod slides along the guide rail to drive the liquid stop slider to move in the first direction ; When the first support rod is rotated to be parallel to the first direction, the liquid stop slider and the fixed platform are arranged at intervals in the first direction to form a channel for the infusion tube to pass through. 2 . The liquid stop device according to claim 1 , wherein the liquid stop device further comprises a second support rod, the second support rod is connected to one end of the first support rod and is used to drive the The first support rod rotates. 3 . The liquid stop device according to claim 2 , wherein an included angle is formed between the second support rod and the first support rod. 4 . 4. The liquid-stopping device according to claim 2, characterized in that, the liquid-stopping device further comprises a pump door, the pump door is rotatably connected to the base through a fixed shaft, and the pump door is provided with a the contact end of the second support rod and the liquid stop slider. 5. The liquid stop device according to claim 4, wherein the contact end comprises a first contact end and a second contact end, and when the pump door is rotated to a closed position, the first contact end and the The first support rod or the second support rod is in contact, so that the first support rod leaves a position parallel to the first direction; the second contact end is used to abut against the liquid stop slider When the liquid stop slider is in contact with the second contact end, the distance between the liquid stop slider and the fixed platform is smaller than the diameter of the infusion tube. 6 . The liquid stop device according to claim 5 , wherein the liquid stop slider comprises an inclined surface, and after the pump door is rotated to the closed position, the second contact end is connected to the inclined surface. 7 . touch. 7. The liquid stop device of claim 6, wherein the inclined surface is inclined in a direction away from the second contact arm in a direction in which the first side points to the second side. 8 . The liquid stop device according to claim 1 , wherein the guide rail is a groove formed on the liquid stop slider, the other end of the first support rod is provided with a roller, and the roller The rolling is arranged in the guide rail. 9 . The liquid stop device according to claim 1 , wherein the guide rail is an arc guide rail, and the arc guide rail takes the rotation center of the first support rod as a circle center. 10 . 10. An infusion pump, characterized in that it comprises the liquid stop device according to any one of claims 1 to 9.

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