Gear transmission water stop structure

Abstract

The utility model discloses a gear transmission water stop structure which comprises a shell, a liquid flow annunciator, a water stop execution structure and a control circuit board. The shell is provided with a channel for an infusion tube to penetrate through. The liquid flow annunciator is installed in the shell and used for monitoring liquid flow in the infusion tube. The water stop execution structure is installed in the shell and used for blocking the infusion tube when liquid flow in the infusion tube is interrupted. The water stop execution structure comprises a driving motor, a gear, a rack and a water stop block. The driving motor is in transmission connection with the gear, the gear is meshed with the rack, the rack is slidably installed in the shell, and the water stop block is fixed to the rack. The control circuit board is electrically connected with the liquid flow annunciator and the driving motor so as to control the driving motor to move the rack when liquid flow in the infusion tube is interrupted, and the water stop block can block the infusion tube. Compared with the prior art, the gear transmission water stop structure is beneficial for a patient to have a more sufficient rest, the transmission process is stable, and the force control is accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a gear-driven water stop structure. Background Art

[0002] Existing infusion sets usually do not have a monitoring function, and manual observation of the infusion process is required to avoid blood backflow into the infusion set. If the above observation work is done by the patient, it will cause the patient not to get sufficient rest and affect the patient's recovery progress. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a gear-driven water stop structure to solve the problems existing in the above-mentioned prior art.

[0004] To achieve the above purpose, the utility model provides the following scheme:

[0005] The utility model provides a gear-driven water stop structure, including:

[0006] A housing, which is provided with a channel for an infusion tube to pass through;

[0007] A liquid flow signaler, which is installed in the housing and used to monitor the on-off of the liquid flow in the infusion tube;

[0008] A water stop execution structure, which is installed in the housing and used to block the infusion tube when the liquid flow in the infusion tube is interrupted; the water stop execution structure includes a driving motor, a gear, a rack and a water stop block; the driving motor is in transmission connection with the gear, the gear meshes with the rack, the rack is slidably installed in the housing, and the water stop block is fixed on the rack;

[0009] A control circuit board, which is electrically connected to the liquid flow signaler and the driving motor respectively, so as to control the driving motor to move the rack when the liquid flow in the infusion tube is interrupted, so that the water stop block blocks the infusion tube.

[0010] Preferably, the gear-driven water stop structure further includes a horn and an indicator light, both of which are installed on the housing; the control circuit board is electrically connected to the horn and the indicator light respectively, so as to control the horn to emit a warning sound and the indicator light to emit a warning flash when the liquid flow in the infusion tube is interrupted.

[0011] Preferably, the gear-driven water stop structure further includes a battery, and the battery supplies power to the liquid flow signaler, the driving motor, the control circuit board, the horn and the indicator light.

[0012] Preferably, the gear-driven water stop structure further includes a button installed on the housing, and the button is electrically connected to the control circuit board for inputting signals for starting use and stopping use to the control circuit board.

[0013] Preferably, the channel is a groove provided on the outer surface of the housing, and the groove has a notch communicating with the inside of the housing, and the water stop block can pass through the notch.

[0014] Preferably, a stop block facing the notch is provided inside the housing, and the stop block and the water stop block are located on both sides of the channel respectively; the stop block is used to support and limit the infusion tube when the water stop block presses the infusion tube.

[0015] Preferably, an anti-detachment clamping member is installed on the channel, and the anti-detachment clamping member is used to clamp the infusion tube in the channel.

[0016] Preferably, the channel is integrally straight; at the position where the anti-detachment clamping member is located, the width of the channel increases.

[0017] Preferably, one anti-detachment clamping member is provided at each end of the channel.

[0018] Preferably, the gear-driven water stop structure further includes a bushing, the bushing is sleeved outside one axial end of the gear, the other axial end of the gear is connected to the output shaft of the driving motor, and a fixed card slot for installing the bushing is provided inside the housing.

[0019] The present utility model has achieved the following technical effects compared with the prior art:

[0020] The gear-driven water stop structure of the present utility model can automatically block the infusion tube after the infusion is completed to avoid blood backflow into the infusion tube. The above blocking process does not require manual participation, and the patient does not need to constantly pay attention to the liquid volume in the infusion bottle, which helps the patient to get more sufficient rest and improve the recovery speed.

[0021] In addition, compared with the swing drive structure, the present utility model selects a gear-rack drive structure, avoiding the axial clearance at the hinge position in the swing drive structure, with a more stable transmission process and more accurate force control. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 Schematic diagram of the positional relationship between the gear-driven water-stop structure and the infusion tube in the embodiment of the present utility model;

[0024] Figure 2 Partial structure schematic diagram of the gear-driven water-stop structure in the embodiment of the present utility model;

[0025] Figure 3 is Figure 2 Schematic diagram after adding a control circuit board and a battery to the structure in

[0026] Figure 4 Schematic diagram of the gear;

[0027] Figure 5 Schematic diagram of the positional relationship between the rack and the water-stop block;

[0028] Figure 6 Schematic diagram of the mating relationship between the gear and the rack.

[0029] Explanation of reference numerals: 1 - rack; 2 - gear; 3 - drive motor; 4 - stopper; 5 - liquid flow signaler; 6 - bushing; 7 - infusion tube; 8 - control circuit board; 9 - battery; 10 - horn; 11 - button; 12 - indicator light. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Refer to Figures 1 to 6 , this embodiment provides a gear-driven water-stop structure, including a housing, a liquid flow signaler 5, a water-stop execution structure, and a control circuit board 8.

[0032] A channel for the infusion tube 7 to pass through is provided on the housing. The liquid flow signaler 5 is installed inside the housing and is used to monitor the on-off of the liquid flow in the infusion tube 7. The water-stop execution structure is installed inside the housing and is used to block the infusion tube 7 when the liquid flow in the infusion tube 7 is interrupted. The water-stop execution structure includes a drive motor 3, a gear 2, a rack 1, and a water-stop block. The drive motor 3 is in transmission connection with the gear 2, the gear 2 meshes with the rack 1, the rack 1 is slidably installed inside the housing, and the water-stop block is fixed to the rack 1. The control circuit board 8 is electrically connected to the liquid flow signaler 5 and the drive motor 3 respectively, so as to control the drive motor 3 to move the rack 1 to block the infusion tube 7 when the liquid flow in the infusion tube 7 is interrupted.

[0033] The working principle of the gear-driven water-stop structure in this embodiment is as follows:

[0034] When the liquid flow signaler 5 detects an interruption in the liquid flow within the infusion tube 7, the liquid flow signaler 5 sends a signal to the control circuit board 8. After receiving this signal, under the control of a preset internal program, the control circuit board 8 sends a control signal to the drive motor 3. The drive motor 3 starts to operate, driving the drive gear 2 to rotate. The rack 1 slides towards the infusion tube 7 driven by the gear 2, and the water stop block fixed on the rack 1 contacts and squeezes the infusion tube 7, thereby achieving the blockage of the infusion tube 7.

[0035] It should be noted that if a swing - type drive structure is used to drive the water stop block, there will be an axial gap at the hinge position, which affects the transmission smoothness. If this axial gap is reduced, the transmission resistance increases, and the drive motor needs to provide greater power. Since the axial gap will still increase after running for a period of time, under the action of the greater driving force provided by the drive motor, the infusion tube is likely to be damaged due to excessive pressure.

[0036] As a possible example, in this embodiment, the gear - driven water stop structure further includes a horn 10 and an indicator light 12, both of which are installed on the housing. The control circuit board 8 is electrically connected to the horn 10 and the indicator light 12 respectively, so as to control the horn 10 to emit a warning sound and the indicator light 12 to emit a warning flash when the liquid flow in the infusion tube 7 is interrupted, in order to remind the patient and medical staff that the infusion process has been completed.

[0037] As a possible example, in this embodiment, the gear - driven water stop structure further includes a battery 9, and the battery 9 supplies power to the liquid flow signaler 5, the drive motor 3, the control circuit board 8, the horn 10 and the indicator light 12.

[0038] As a possible example, in this embodiment, the gear - driven water stop structure further includes a button 11 installed on the housing. The button 11 is electrically connected to the control circuit board 8 and is used to input signals for starting use and stopping use to the control circuit board 8. When the gear - driven water stop structure is in the shutdown state, pressing the button 11 can turn on the gear - driven water stop structure. When the gear - driven water stop structure is in the on state, pressing the button 11 can turn off the gear - driven water stop structure.

[0039] As a possible example, in this embodiment, the channel is a groove provided on the outer surface of the housing. The groove has a notch communicating with the inside of the housing, and the water stop block can pass through the notch. It should be noted that in some prior arts, the housing is composed of an upper housing and a lower housing, and the channel is formed by splicing a semi - circular channel provided on the upper housing and a semi - circular channel provided on the lower housing. This setting structure requires separating the upper housing and the lower housing when fixing the infusion tube 7, and the operation is cumbersome. In this embodiment, by setting the channel on the outside of the housing, during actual use, only the infusion tube 7 needs to be inserted into the channel without opening the housing, thus simplifying the operation steps.

[0040] As a possible example, in this embodiment, a stop block 4 facing the notch is provided inside the housing. The stop block 4 and the water stop block are respectively located on both sides of the channel. The stop block 4 is used to support and limit the infusion tube 7 when the water stop block squeezes the infusion tube 7.

[0041] As a possible example, in this embodiment, an anti - detachment clamping member is installed on the channel. The anti - detachment clamping member is used to clamp the infusion tube 7 in the channel. There are various forms of the anti - detachment clamping member, such as Velcro. In this embodiment, the anti - detachment clamping member is a plastic block fixed on the side wall of the channel.

[0042] As a possible example, in this embodiment, the channel is generally straight. At the position where the anti - detachment clamping member is located, the width of the channel increases. When the infusion tube 7 is placed into the channel, the infusion tube 7 needs to be bent at the position of the anti - detachment clamping member to avoid the anti - detachment clamping member, and then the infusion tube 7 is straightened after being placed into the channel. The infusion tube 7 has a certain shape - retaining ability, so that it can maintain a straight shape in the channel. Therefore, the anti - detachment clamping member can be used to prevent the infusion tube 7 from detaching and limit its position.

[0043] As a possible example, in this embodiment, an anti - detachment clamping member is provided at each end of the channel to improve the fixing effect on the infusion tube 7.

[0044] As a possible example, in this embodiment, the gear - driven water - stop structure further includes a bushing 6. The bushing 6 is sleeved on the outer side of one axial end of the gear 2. The other axial end of the gear 2 is connected to the output shaft of the driving motor 3. A fixed card slot for installing the bushing 6 is provided inside the housing. In this embodiment, the two axial ends of the gear 2 are respectively supported by the output shaft of the driving motor 3 and the bushing 6, which improves the smoothness of the operation of the gear 2. The driving motor 3 is preferably a reduction motor to reduce the volume and improve the control accuracy. The driving motor 3 is fixed in the housing by a pressing block, and the control circuit board 8 and the battery 9 cover the driving motor 3.

[0045] As a possible example, in this embodiment, the gear 2 is preferably an incomplete gear. A swing block is fixed on one end face of the gear 2 facing away from the bushing 6, and the swing block extends out of the contour of the gear 2. A non - circular hole is provided on the swing block, and the non - circular hole is located at the center position of the gear 2 and is used to insert the output shaft of the driving motor 3 to transmit rotation. When the gear 2 rotates, the part of the swing block extending out of the contour of the gear 2 is in limit contact with the rack 1, making the sliding process of the rack 1 smoother.

[0046] In this utility model, specific examples are used to elaborate on the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and its core idea of the utility model; at the same time, for those of ordinary skill in the art, according to the idea of the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation on the utility model.

Claims

1. A gear-driven water stop structure, characterized in that, Comprising: A housing, on which a channel for an infusion tube to pass through is provided; A liquid flow signaler, which is installed inside the housing and is used to monitor the on-off of the liquid flow in the infusion tube; A water stop execution structure, which is installed inside the housing and is used to block the infusion tube when the liquid flow in the infusion tube is interrupted; the water stop execution structure includes a driving motor, a gear, a rack and a water stop block; the driving motor is in transmission connection with the gear, the gear meshes with the rack, the rack is slidably installed inside the housing, and the water stop block is fixed on the rack; A control circuit board, which is electrically connected to the liquid flow signaler and the driving motor respectively, so as to control the driving motor to move the rack when the liquid flow in the infusion tube is interrupted, so that the water stop block blocks the infusion tube.

2. The gear transmission water stop structure according to claim 1, characterized in that: It further includes a horn and an indicator light, both of which are installed on the housing; the control circuit board is electrically connected to the horn and the indicator light respectively, so as to control the horn to emit a warning sound and control the indicator light to emit a warning flash when the liquid flow in the infusion tube is interrupted.

3. The gear transmission water stop structure according to claim 2, wherein: It further includes a battery, which supplies power to the liquid flow signaler, the driving motor, the control circuit board, the horn and the indicator light.

4. The gear transmission water stop structure according to claim 3, wherein: It further includes a button installed on the housing, and the button is electrically connected to the control circuit board and is used to input start-use and stop-use signals to the control circuit board.

5. The gear transmission water stop structure according to claim 1, characterized in that: The channel is a groove provided on the outer surface of the housing, and the groove has a notch communicating with the inner side of the housing, and the water stop block can pass through the notch.

6. The gear drive water stop structure according to claim 5, characterized in that: A stop block is provided inside the housing opposite to the notch, and the stop block and the water stop block are respectively located on both sides of the channel; the stop block is used to support and limit the infusion tube when the water stop block presses the infusion tube.

7. The gear drive water stop structure according to claim 5, characterized in that: An anti-disconnection clamping member is installed on the channel, and the anti-disconnection clamping member is used to clamp the infusion tube in the channel.

8. The gear transmission water stop structure according to claim 7, wherein: The channel is integrally linear; at the position where the anti-disconnection clamping member is located, the width of the channel increases.

9. The gear transmission water stop structure according to claim 8, characterized in that: One anti-disconnection clamping member is provided at each end of the channel.

10. The gear drive water stop structure according to claim 1, characterized in that: It further includes a bushing, the bushing is sleeved outside one axial end of the gear, the other axial end of the gear is connected to the output shaft of the driving motor, and a fixed card slot for installing the bushing is provided inside the housing.

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