Device for controlling arteriovenous return water in dialysis

Abstract

The invention relates to a device for controlling arteriovenous return water in dialysis. Comprising a first control base, a second control base, a plurality of closing mechanisms fixedly arranged on the first control base and the second control base, a first wall clamping mechanism arranged on the first control base, a second wall clamping mechanism arranged on the first control base, a third wall clamping mechanism arranged on the first control base and a fourth wall clamping mechanism arranged on the second control base. The control mechanism is arranged on the first control seat; the first wall clamp mechanism comprises a first receding groove fixedly formed in the first control base, a first wall clamp arranged on the first receding groove in a sliding mode, a first push rod fixedly arranged on the first wall clamp, and a damping ring fixedly arranged on the first control base and arranged on the first push rod in a sleeving mode. One end of the first spring is fixedly arranged on the first control seat, and the other end of the first spring is fixedly arranged on the first wall clamp.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a device for controlling arteriovenous water return during dialysis. Background Art

[0002] Hemodialysis is a renal replacement therapy for patients with acute and chronic renal failure. It involves draining blood from the body and passing it through a dialyzer composed of countless hollow fibers. Blood and a solution containing electrolytes similar to those in the body (dialysate) exchange substances within and outside the fibers through diffusion, ultrafiltration, adsorption, and convection. This process removes metabolic waste, maintains electrolyte and acid-base balance, and simultaneously removes excess water from the body. The purified blood is then returned to the body. This entire process is called hemodialysis.

[0003] Hemodialysis requires the use of a dialyzer. When returning water to the dialysis machine, the pump needs to be stopped and multiple wall clamps need to be operated to return the saline to the vein by gravity. The multiple wall clamps need to be operated again, and the pump needs to be started to return water to the artery. This return method is complicated to operate, and due to the long pipeline, it is not easy to find the corresponding wall clamp when operating the wall clamp. Therefore, a device for controlling arteriovenous return water during dialysis is needed to solve the above problems. Summary of the Invention

[0004] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a device for controlling arteriovenous return water during dialysis, including a first control seat, a second control seat, a plurality of closing mechanisms fixed on the first control seat and the second control seat, a first wall clamp mechanism provided on the first control seat, a second wall clamp mechanism provided on the first control seat, a third wall clamp mechanism provided on the first control seat, a fourth wall clamp mechanism provided on the second control seat, and a control mechanism provided on the first control seat; the first wall clamp mechanism includes a first clearance groove fixed on the first control seat, a first wall clamp slidably provided on the first clearance groove, a first push rod fixed on the first wall clamp, a damping ring fixed on the first control seat and sleeved on the first push rod, and a first spring with one end fixed on the first control seat and the other end fixed on the first wall clamp.

[0006] Specifically, the closing mechanism includes a first sliding groove fixedly arranged on the first control seat and the second control seat, a closing block slidably arranged on the first sliding groove, and a second spring fixedly arranged on the closing block.

[0007] Specifically, the second wall clamp mechanism includes a second give way groove fixed on the first control seat, a second wall clamp slidably arranged on the second give way groove, a second sliding groove fixed on the first control seat, and a first rack with one end fixed on the second wall clamp and sliding along the second sliding groove.

[0008] Specifically, the third wall clamp mechanism includes a third give way groove fixed on the first control seat, a third wall clamp slidably arranged on the third give way groove, a third sliding groove fixed on the first control seat, a second rack fixed on the third wall clamp and sliding along the third sliding groove, a first limiting hole symmetrically fixed on the first control seat, a first limiting head slidably arranged on the first limiting hole and the third wall clamp, and a third spring with one end fixed on the first limiting head and the other end fixed on the third wall clamp.

[0009] Specifically, the fourth wall clamp mechanism includes a fourth give way groove fixed on the second control seat, a fifth give way groove fixed on the second control seat, a fourth wall clamp slidably arranged on the fourth give way groove, a fifth wall clamp slidably arranged on the fifth give way groove, a fourth sliding groove fixed on the second control seat, and a second push rod fixed on the fourth wall clamp and the fifth wall clamp and sliding along the fourth sliding groove.

[0010] Specifically, the control mechanism includes a fifth chute symmetrically fixed to the first control seat, a sixth chute symmetrically fixed to the first control seat, a first control block slidably mounted on the fifth chute, a second control block slidably mounted on the sixth chute, a telescopic rod with one end fixed to the first control block and the other end fixed to the second control block, a shift assembly mounted on the second control block and the first control seat, and a transmission assembly mounted on the first control seat.

[0011] Specifically, the shift assembly includes a plurality of shift holes fixed on the first control seat, a shift head slidably arranged on the shift holes and the second control block, and a fourth spring with one end fixed on the shift head and the other end fixed on the second control block.

[0012] Specifically, the transmission assembly includes a seventh slide groove fixed on the first control seat, a slider slidably arranged on the seventh slide groove, a first gear column rotatably arranged on the first control seat and engaged with the second rack, a second gear column rotatably arranged on the first control seat, a third rack slidably arranged on the first control seat and engaged with the second gear column, and a third gear column rotatably arranged on the first control seat and engaged with the first rack and the third rack.

[0013] Specifically, an arterial needle line and an arterial line are provided on the first control seat; a physiological saline line is provided on the arterial line; and a venous needle line and a venous line are provided on the second control seat.

[0014] The beneficial effects of the present invention are: (1) The opening and closing of each arterial pipeline can be centrally controlled by the second control block on the first control seat, and the opening and closing of each venous pipeline can be controlled by the second push rod on the second control seat. Compared with the prior art that requires the operation of multiple wall clamps, the operation method of the present invention is simple and convenient.

[0015] (2) The first control seat can organize the various arterial pipelines, and the second control seat can organize the various venous pipelines. Compared with the existing technology, it can avoid the situation where medical staff cannot find the wall clamps and make mistakes during operation.

[0016] (3) The present invention can be used in conjunction with existing hemodialysis machines. Hemodialysis machines include semi-automatic hemodialysis machines and fully automatic hemodialysis machines. Semi-automatic hemodialysis machines require medical staff to manually operate the wall clamps, while fully automatic hemodialysis machines can centrally control the wall clamps through buttons. Most of the existing hemodialysis machines in hospitals are semi-automatic hemodialysis machines. Installing the present invention on the existing hemodialysis machines can realize the function of centralized operation of the wall clamps, achieving the same function as the fully automatic hemodialysis machines. The hospital does not need to re-purchase fully automatic hemodialysis machines, so the present invention has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0018] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0019] In the attached figure: Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A top view of the first control seat in the present invention; Figure 3 for Figure 2 Partial line section of AA; Figure 4 for Figure 2 Linear section of the middle BB; Figure 5 for Figure 3 Partial line section of CC; Figure 6 for Figure 2 Linear section of the middle DD; Figure 7 It is a front view of the second control seat in the present invention; Figure 8 for Figure 7 Line section diagram of EE. DETAILED DESCRIPTION

[0020] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0021] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0022] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0023] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0024] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0025] Reference Figures 1-8As shown, the device for controlling arteriovenous return water in dialysis described in the present invention includes a first control seat 1, a second control seat 2, a plurality of closing mechanisms 3 fixed on the first control seat and the second control seat, a first wall clamping mechanism 4 provided on the first control seat, a second wall clamping mechanism 5 provided on the first control seat, a third wall clamping mechanism 6 provided on the first control seat, a fourth wall clamping mechanism 7 provided on the second control seat, and a control mechanism 8 provided on the first control seat; the first wall clamping mechanism includes a first give way groove 41 fixed on the first control seat, a first wall clamp 42 slidably provided on the first give way groove, a first push rod 43 fixed on the first wall clamp, a damping ring 44 fixed on the first control seat and sleeved on the first push rod, a first spring 45 with one end fixed on the first control seat and the other end fixed on the first wall clamp; the first control seat has a groove for placing an arterial needle line and an arterial line, and the arterial line is provided with a physiological saline branch; the second control seat has a groove for placing a venous needle line and venous line; the closing mechanism can limit the position of the line to prevent the line from falling out of the first control seat and the second control seat; the first wall clamp mechanism can clamp and close the physiological saline branch; the second wall clamp mechanism can close the arterial needle line; the third wall clamp mechanism can close the arterial line; the fourth wall clamp mechanism can close the venous needle line and the venous line; the control mechanism is used to operate the first wall clamp mechanism, the second wall clamp mechanism and the third wall clamp mechanism, which is convenient for medical staff to operate. Compared with the existing technology, there is no need to operate multiple wall clamps, which can be uniformly controlled by the control mechanism; the first control seat and the second control seat can organize the lines; the first give way groove can make way for the physiological saline branch, and the line is closed after being squeezed by the first wall clamp. At the same time, the hose will be deformed, and the first give way groove can provide room for the deformation; after the first push rod is pushed by the control mechanism, it will drive the first wall clamp to close the physiological saline branch. At this time, the first spring is stretched. When the control mechanism moves in the opposite direction, the first spring will drive the first wall clamp to reset. Due to the damping ring, the first wall clamp will slowly reset.

[0026] Specifically, the closing mechanism includes a first slide groove 31 fixed on the first control seat and the second control seat, a closing block 32 slidably arranged on the first slide groove, and a second spring 33 fixed on the closing block; a slope is provided on the closing block to facilitate pressing the pipeline into the groove; when in use, the pipeline is pressed into the grooves on the first control seat and the second control seat, and the closing block prevents the pipeline from detaching from the first control seat and the second control seat.

[0027] Specifically, the second wall clamp mechanism includes a second give way groove 51 fixed on the first control seat, a second wall clamp 52 slidably arranged on the second give way groove, a second slide groove 53 fixed on the first control seat, and a first rack 54 with one end fixed on the second wall clamp and sliding along the second slide groove; the second give way groove can provide give way for the deformation of the arterial needle pipeline; when the first rack slides on the second slide groove, it can drive the second wall clamp to move and close the arterial needle pipeline.

[0028] Specifically, the third wall clamp mechanism includes a third give way groove 61 fixed on the first control seat, a third wall clamp 62 slidably arranged on the third give way groove, a third slide groove 63 fixed on the first control seat, a second rack 64 fixed on the third wall clamp and sliding along the third slide groove, a first limiting hole 65 symmetrically fixed on the first control seat, a first limiting head 66 slidably arranged on the first limiting hole and the third wall clamp, and a third spring 67 with one end fixed on the first limiting head and the other end fixed on the third wall clamp; the third give way groove can provide give way for deformation of the arterial pipeline; when the second rack moves, it can drive the third wall clamp to close the arterial pipeline; the first limiting hole and the first limiting head can fix the position of the third wall clamp.

[0029] Specifically, the fourth wall clamp mechanism includes a fourth give way groove 71 fixed on the second control seat, a fifth give way groove 72 fixed on the second control seat, a fourth wall clamp 73 slidably arranged on the fourth give way groove, a fifth wall clamp 74 slidably arranged on the fifth give way groove, a fourth slide groove 75 fixed on the second control seat, and a second push rod 76 fixed on the fourth wall clamp and the fifth wall clamp and sliding along the fourth slide groove; the fourth give way groove can provide give way for the deformation of the venous needle pipeline; the fifth give way groove can provide give way for the deformation of the venous pipeline; the fourth wall clamp can close the venous needle pipeline; the fifth give way groove can close the venous pipeline; after the water return is completed, the venous needle pipeline and the venous pipeline need to be closed. At this time, pushing the second push rod can synchronously close the venous needle pipeline and the venous pipeline and pull out the venous needle.

[0030] Specifically, the control mechanism includes a fifth slide groove 81 symmetrically fixed on the first control seat, a sixth slide groove 82 symmetrically fixed on the first control seat, a first control block 83 slidably arranged on the fifth slide groove, a second control block 84 slidably arranged on the sixth slide groove, a telescopic rod with one end fixed on the first control block and the other end fixed on the second control block, a gear assembly 85 arranged on the second control block and the first control seat, and a transmission assembly 86 arranged on the first control seat; the fifth slide groove is an annular slide groove, and the fifth slide groove is a one-way slide groove; the gear assembly can limit the position of the second control block, and then limit the position of the first control block; the transmission assembly can transmit the first control block and the second wall clamping mechanism and the third wall clamping mechanism; a magnet is provided at the bottom of the first control block, which can be attracted by the magnet on the slider.

[0031] Specifically, the shift assembly includes a plurality of shift holes 851 fixed on the first control seat, a shift head 852 slidably provided on the shift holes and the second control block, and a fourth spring 853 with one end fixed on the shift head and the other end fixed on the second control block; the shift hole on the far right has the first wall clamp closed, and the second and third wall clamps opened, corresponding to the working state during dialysis; the second shift hole on the right has the first wall clamp open, the second wall clamp open, and the third wall clamp closed, corresponding to the working state of arterial gravity return water; the second shift hole on the left has the first wall clamp open, the second wall clamp open, and the third wall clamp closed, corresponding to the preparation state before arterial return water, that is, the saline flushing branch; the first wall clamp of the leftmost shift hole is open, and the second wall clamp and the third wall clamp are closed, corresponding to the working state of venous return water.

[0032] Specifically, the transmission assembly includes a seventh slide groove 861 fixed on the first control seat, a slider 862 slidingly arranged on the seventh slide groove, a first gear column 863 rotatably arranged on the first control seat and engaged with the second rack, a second gear column 864 rotatably arranged on the first control seat, a third rack 865 slidably arranged on the first control seat and engaged with the second gear column, and a third gear column 866 rotatably arranged on the first control seat and engaged with the first rack and the third rack; a limiting slide groove is provided on the seventh slide groove to prevent the slider from escaping from the seventh slide groove; a protrusion is provided on the slider, which is a magnet and can be attracted by the magnet on the first control block; teeth are provided on the side of the slider that contacts the first gear column and the second gear column.

[0033] Specifically, the first control seat is provided with an arterial needle line 11 and an arterial line 12; the arterial line is provided with a physiological saline line 13; the second control seat is provided with a venous needle line 21 and a venous line 22; after the arterial line is extended, it needs to pass through the blood pump and arterial pot on the dialysis machine, then pass through the filter, and then connect to the venous pot, and then connect to the venous line; the physiological saline line is connected to the physiological saline bag. In an emergency situation where the patient's blood pressure drops sharply, water needs to be returned to the artery and vein at the same time. At this time, the second control block can be shifted to the second gear on the right, the blood pump parameters can be set, and the physiological saline bag can be slightly squeezed to accelerate the return of water.

[0034] After all the pipelines are installed, the initial position of the first control block is at the upper end of the fifth slide slot. When sliding to the right, the second control block enters the rightmost gear position, driving the first wall clamp mechanism to work and close the saline branch. At this time, the arterial needle pipeline and the arterial pipeline are in an open state, that is, blood is dialyzed; when water return is needed, slide the second control block to the left, thereby driving the first control block to slide to the left. Due to the structure of the fifth slide slot, the first control block cannot return to the upper end of the fifth slide slot and can only move to the lower end of the fifth slide slot. At this time, the first wall clamp loses its thrust and slowly resets under the action of the first spring, and shifts the second control block to the second gear position on the left. At this time, the first control block drives the slider to move, and the slider drives the first gear column to rotate, and the first gear column drives the third wall clamp to move, closing the arterial pipeline. Corresponding to the water return preparation stage, the saline is The branch is flushed. After flushing for twenty to thirty seconds, slide the second control block to the right, drive the slider to move to the right, open the third wall clamp, and turn off the blood pump at the same time. Rely on gravity to return water to the artery. After observing that there is no blood in the arterial needle pipeline, continue to slide the second control block to the left and enter the leftmost gear. At this time, the slider first drives the third wall clamp to close. The third wall clamp is limited by the first limiting hole. The slider disengages from the first gear column and then engages with the second gear column, driving the second gear column to rotate. The second gear column drives the third rack to slide, and the third rack drives the third gear column to rotate, thereby closing the second wall clamp, that is, the arterial needle pipeline and the arterial pipeline are closed, and the blood pump is started to return blood to the venous end. After the blood return is completed, push the second push rod to close the venous needle pipeline and the venous pipeline, pull out the venous needle and arterial needle, and complete the water return operation.

[0035] The above descriptions are merely some preferred embodiments of the present disclosure and illustrate the underlying technical principles. Those skilled in the art should understand that the scope of the invention encompassed by the embodiments of the present disclosure is not limited to technical solutions formed by specific combinations of the aforementioned technical features. It also encompasses other technical solutions formed by any combination of the aforementioned technical features or their equivalents, without departing from the aforementioned inventive concept. For example, a technical solution formed by replacing the aforementioned features with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A device for controlling arteriovenous return water during dialysis, characterized by: It includes a first control seat, a second control seat, a plurality of closing mechanisms fixed on the first control seat and the second control seat, a first wall clamp mechanism provided on the first control seat, a second wall clamp mechanism provided on the first control seat, a third wall clamp mechanism provided on the first control seat, a fourth wall clamp mechanism provided on the second control seat, and a control mechanism provided on the first control seat; the first wall clamp mechanism includes a first give way groove fixed on the first control seat, a first wall clamp slidably provided on the first give way groove, a first push rod fixed on the first wall clamp, a damping ring fixed on the first control seat and sleeved on the first push rod, and a first spring with one end fixed on the first control seat and the other end fixed on the first wall clamp.

2. The device for controlling arteriovenous return water during dialysis according to claim 1, characterized in that: The closing mechanism includes a first sliding groove fixedly arranged on the first control seat and the second control seat, a closing block slidably arranged on the first sliding groove, and a second spring fixedly arranged on the closing block.

3. The device for controlling arteriovenous return water during dialysis according to claim 1, characterized in that: The second wall clamp mechanism includes a second give way groove fixedly provided on the first control seat, a second wall clamp slidably provided on the second give way groove, a second sliding groove fixedly provided on the first control seat, and a first rack having one end fixedly provided on the second wall clamp and sliding along the second sliding groove.

4. The device for controlling arteriovenous return water during dialysis according to claim 3, characterized in that: The third wall clamp mechanism includes a third give way groove fixed on the first control seat, a third wall clamp slidably arranged on the third give way groove, a third sliding groove fixed on the first control seat, a second rack fixed on the third wall clamp and sliding along the third sliding groove, a first limiting hole symmetrically fixed on the first control seat, a first limiting head slidably arranged on the first limiting hole and the third wall clamp, and a third spring with one end fixed on the first limiting head and the other end fixed on the third wall clamp.

5. The device for controlling arteriovenous return water during dialysis according to claim 1, characterized in that: The fourth wall clamp mechanism includes a fourth give way groove fixed on the second control seat, a fifth give way groove fixed on the second control seat, a fourth wall clamp slidably arranged on the fourth give way groove, a fifth wall clamp slidably arranged on the fifth give way groove, a fourth sliding groove fixed on the second control seat, and a second push rod fixed on the fourth wall clamp and the fifth wall clamp and sliding along the fourth sliding groove.

6. The device for controlling arteriovenous return water during dialysis according to claim 4, characterized in that: The control mechanism includes a fifth slide groove symmetrically fixed on the first control seat, a sixth slide groove symmetrically fixed on the first control seat, a first control block slidably arranged on the fifth slide groove, a second control block slidably arranged on the sixth slide groove, a telescopic rod with one end fixed on the first control block and the other end fixed on the second control block, a gear assembly arranged on the second control block and the first control seat, and a transmission assembly arranged on the first control seat.

7. The device for controlling arteriovenous return water during dialysis according to claim 6, characterized in that: The shift assembly includes a plurality of shift holes fixedly provided on the first control seat, a shift head slidably provided on the shift holes and the second control block, and a fourth spring with one end fixedly provided on the shift head and the other end fixedly provided on the second control block.

8. The device for controlling arteriovenous return water during dialysis according to claim 7, characterized in that: The transmission assembly includes a seventh slide groove fixed on the first control seat, a slider slidably arranged on the seventh slide groove, a first gear column rotatably arranged on the first control seat and engaged with the second rack, a second gear column rotatably arranged on the first control seat, a third rack slidably arranged on the first control seat and engaged with the second gear column, and a third gear column rotatably arranged on the first control seat and engaged with the first rack and the third rack.

9. The device for controlling arteriovenous return water during dialysis according to claim 1, characterized in that: An arterial needle line and an arterial line are provided on the first control seat; a physiological saline line is provided on the arterial line; and a venous needle line and a venous line are provided on the second control seat.

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