Dual lumen picc flush device

Abstract

The utility model provides a double -cavity PICC flush pipe device, including fixed box and setting the lifting cover at its top, the inside of lifting cover places double -cavity syringe / bag, and double -cavity syringe / bag bottom is through double joint respectively communicated with the catheter A and catheter B that extend to the both sides of bottom through fixed box. The double -cavity PICC flush pipe device, through the preliminary location of catheter A and catheter B of double -cavity syringe / bag output end by using the limiting cylinder, prevent catheter A and catheter B loose, second, through the arc of interval board top to catheter A and catheter B below the limiting cylinder are oppressed, so that the pipe diameter of catheter A and catheter B reduces and forms the necking speed -up section at this place, cooperate the pressure output of peristaltic pump, and the fluid of catheter A and catheter B is compressed after the necking speed -up section and expands rapidly in the subsequent path, thereby realizes the pre -pulse effect of fluid.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a dual-cavity PICC flushing device. Background Technology

[0002] Peripherally inserted central venous catheters (PICCs) are widely used in clinical intravenous therapy. As a pathway for long-term intravenous therapy and parenteral nutrition, PICCs can reduce the pain of repeated punctures, protect veins, reduce drug leakage, and improve the safety of intravenous therapy without affecting limb movement or restricting patient positioning. They are characterized by ease of operation, long indwelling time, and high safety.

[0003] After the infusion is completed, both channels of a dual-lumen PICC catheter need to be flushed and sealed together. Whether only one lumen is used, both lumens are used at the same time, or the infusion of one lumen is completed, flushing and sealing must be performed at the same time. Otherwise, a pressure difference may be formed, which may lead to catheter blockage. Alternatively, if the flushing and sealing method is incorrect, such as using two separate syringes to seal the catheter at the same time, uneven pressure and different rhythms may also form a pressure difference, leading to catheter blockage.

[0004] Existing medical technologies already employ peristaltic pumps to achieve dual-catheter delivery. For example, utility model CN219501711U discloses a single-motor dual-channel peristaltic pump. This prior art involves installing two sets of elastic tubing between the housing and two clamping devices, and then using a motor output to drive a bidirectional clamping mechanism to compress the two sets of elastic tubing to achieve synchronous fluid output. However, this prior art lacks an initial pre-pulse pressure supply before the fluid is pulsed by the bidirectional clamping mechanism. That is, the pulsating motion of the fluid can only be achieved through the bidirectional clamping mechanism, which is inconvenient for efficiently increasing the fluid movement speed, thus reducing work efficiency. Utility Model Content

[0005] This invention proposes a dual-cavity PICC flushing device, which solves the problem in the prior art where the fluid lacks a preliminary pre-pulse pressure supply before being pulsed by the bidirectional pressure mechanism. In other words, the pulse movement of the fluid can only be achieved through the bidirectional pressure mechanism, which is inconvenient and inefficient in increasing the speed of fluid movement.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A dual-lumen PICC flushing device includes a fixed box and a support cover on its top. The support cover contains a dual-lumen syringe / bag. The bottom of the dual-lumen syringe / bag is connected to a conduit A and / or conduit B, which pass through the fixed box and extend to both sides of the bottom, via dual connectors. A partition plate is fixed to the bottom of the fixed box between conduit A and conduit B. A limiting cylinder is fixed to the top of the fixed box outside conduit A and conduit B. The top of the partition plate is arc-shaped and extends into the limiting cylinder. The bottom of the limiting cylinder is inverted conical. Conduit A and conduit B are limited by the limiting cylinder and extend downwards, compressing the tube diameter by contacting the top of the partition plate.

[0008] Guide plates are provided on both sides of the partition plate, and the side of catheter A and catheter B away from the dual-lumen syringe / bag is placed on the guide plate; a peristaltic pump is fixed on the inner rear wall of the fixed box, and the peristaltic guide wheel on the peristaltic pump abuts against catheter A or catheter B.

[0009] Furthermore, the peristaltic pump includes a motor, the output shaft of which is provided with a polygonal frame, and there are multiple peristaltic guide wheels, each of which is rotatably connected to the polygonal frame via a rotating shaft.

[0010] Furthermore, a guide wheel plate is fixed to the inner rear wall of the fixed box. The guide wheel plate is arc-shaped and located on the peristaltic guide wheel. The outer wall of the peristaltic guide wheel slides along the inner side of the guide wheel plate.

[0011] Furthermore, the guide plate is provided with an adapter groove to accommodate conduit A or conduit B.

[0012] Furthermore, the guide plate is arc-shaped on the side near the peristaltic guide wheel, and the center of the arc is concentric with the center of rotation of the peristaltic pump.

[0013] The beneficial effects of the technical solution provided in this application are as follows:

[0014] This dual-lumen PICC flushing device uses a limiting cylinder to initially limit the output ends of tubing A and tubing B of the dual-lumen syringe / bag, preventing tubing A and tubing B from loosening. Secondly, the arc at the top of the partition plate compresses tubing A and tubing B below the limiting cylinder, causing the diameter of tubing A and tubing B to narrow at that point and form a constriction-speed-increasing section. Combined with the pressure output of the peristaltic pump, the fluid in tubing A and tubing B expands rapidly in the subsequent path after being compressed through the constriction-speed-increasing section, thereby achieving a pre-pulsation effect on the fluid. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional schematic diagram of the dual-cavity PICC flushing device of this utility model.

[0017] In the diagram: 10 Fixed box, 20 Lifting cover, 30 Dual-chamber syringe / bag, 40 Catheter A, 50 Catheter B, 60 Peristaltic pump, 61 Motor, 62 Polygonal frame, 63 Peristaltic guide wheel, 64 Guide wheel plate, 70 Guide plate, 71 Adaptor groove, 80 Limiting cylinder, 90 Spacer plate. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Reference Figure 1 A dual-lumen PICC flushing device includes a fixed housing 10 and a support cover 20 on top of it. A dual-lumen syringe / bag 30 is placed inside the support cover 20. The bottom of the dual-lumen syringe / bag 30 is connected via dual connectors to conduits A 40 and / or B 50, which pass through the fixed housing 10 and extend to both sides of the bottom. By placing the support cover 20 on top of the fixed housing 10 and housing the dual-lumen syringe / bag 30 inside, fluid can be stably supplied to conduits A 40 and B 50. The dual connector design ensures that the fluid is evenly distributed to both conduits. This design helps prevent conduit blockage or damage due to uneven fluid distribution during flushing.

[0020] The bottom inner wall of the fixed box 10 is fixed with a partition plate 90 located between conduits A 40 and B 50, and the top inner wall of the fixed box 10 is fixed with a limiting cylinder 80 located outside conduits A 40 and B 50. The top of the partition plate 90 is arc-shaped and extends into the limiting cylinder 80, and the bottom of the limiting cylinder 80 is inverted conical. Conduits A 40 and B 50 are limited by the limiting cylinder 80 and extend downward, compressing their diameter by contacting the top of the partition plate 90. When fluid flows from the dual-lumen syringe / bag 30 through conduits A 40 and B 50, the limiting cylinder 80 first performs preliminary positioning and limiting of the conduits, ensuring the correct position of the conduits within the fixed box 10. Subsequently, the fluid continues to flow downward, passing through the compression area between the arc-shaped top of the partition plate 90 and the inverted conical bottom of the limiting cylinder 80. In this area, the diameter of the conduits is compressed, the fluid is squeezed, the flow rate increases, forming a constriction-increase section. When the fluid passes through this constriction, the fluid expands rapidly due to the sudden increase in pipe diameter, producing a strong pulsating effect.

[0021] Guide plates 70 are provided on both sides of the partition plate 90. The side of the catheters A 40 and B 50 away from the dual-lumen syringe / bag 30 is placed on the guide plate 70. A peristaltic pump 60 is fixed to the inner rear wall of the fixing box 10, and the peristaltic guide wheel 63 on the peristaltic pump 60 abuts against the catheter A 40 or the catheter B 50. The arrangement of the guide plate 70 and the peristaltic pump 60 enhances the stability and controllability of the catheters A 40 and B 50 during the flushing process. The guide plate 70 provides additional support and guidance for the catheters, ensuring that the catheters maintain the correct orientation and position on the side away from the dual-lumen syringe / bag 30, and preventing the catheters from deviating or twisting during the flushing process. The peristaltic pump 60 and its peristaltic guide wheel 63 are responsible for providing precise fluid delivery power, and through direct contact with the catheters, achieve precise control of fluid flow.

[0022] In some embodiments, the peristaltic pump 60 includes a motor 61, the output shaft of which is equipped with a polygonal frame 62. Multiple peristaltic guide wheels 63 are rotatably connected to the polygonal frame 62 via rotating shafts. Through the design of the motor 61 and polygonal frame 62 in the peristaltic pump 60, synchronous control of multiple peristaltic guide wheels 63 is achieved, thereby precisely regulating the flow of fluid in conduit A 40 and conduit B 50. This design allows the peristaltic pump 60 to control the fluid with higher efficiency and greater precision because multiple peristaltic guide wheels 63 can act on the conduit simultaneously, providing more uniform pressure and pushing force, thus optimizing the fluid delivery process.

[0023] In some embodiments, a guide wheel plate 64 is fixed to the inner rear wall of the fixed box 10. The guide wheel plate 64 is arc-shaped and located on the peristaltic guide wheel 63. The outer wall of the peristaltic guide wheel 63 slides along the inner side of the guide wheel plate 64. The outer wall of the peristaltic guide wheel 63 slides along the inner arc-shaped surface of the guide wheel plate 64 fixed to the inner rear wall of the fixed box 10. This design ensures the stability and accuracy of the peristaltic guide wheel 63 during rotation, allowing the guide wheel to uniformly compress and release the conduit A 40 and conduit B 50, thereby effectively promoting the flow of fluid in the conduit. In addition, the guide wheel plate 64 is configured to provide rotational guidance for the peristaltic guide wheel 63, avoiding idling and excessive pressure release of the peristaltic guide wheel 63, which would result in uneven pulse pressure on conduit A 40 or conduit B 50.

[0024] In some embodiments, the guide plate 70 has an adapter groove 71 for accommodating conduit A 40 or conduit B 50. The adapter groove 71 on the guide plate 70 provides a precise placement path for conduit A 40 and conduit B 50, ensuring correct positioning and stable flow of the conduits during flushing. The adapter groove 71 is designed to be shallow, which guides the conduits along the predetermined path without interfering with the pressure exerted on the conduits by the peristaltic guide roller 63, thus ensuring the continuity and effectiveness of fluid delivery.

[0025] In some embodiments, the guide plate 70 is arc-shaped on the side near the peristaltic guide wheel 63, and the center of the arc is concentric with the rotation center of the peristaltic pump 60. Because the arc center of the guide plate 70 is concentric with the rotation center of the peristaltic pump 60, this design ensures that the conduit maintains proper guidance throughout the entire working area of ​​the peristaltic pump 60, thereby achieving more uniform and efficient fluid delivery. When the peristaltic pump 60 starts and rotates, the peristaltic guide wheel 63 on it begins to periodically compress and release the conduit A 40 or conduit B 50, propelling the fluid forward within the conduit. The arc-shaped design of the guide plate 70 allows it to match the movement path of the peristaltic guide wheel 63, ensuring that the conduit can move smoothly along the arc-shaped surface of the guide plate 70 when compressed.

[0026] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-lumen PICC flushing device, comprising a fixed box (10) and a support cover (20) disposed on its top, wherein a dual-lumen syringe / bag (30) is placed inside the support cover (20), and the bottom of the dual-lumen syringe / bag (30) is respectively connected by a double connector to a conduit A (40) passing through the fixed box (10) and extending to both sides of the bottom; characterized in that, The bottom of the fixed box (10) is fixed with a partition plate (90) between the conduit A (40) and the conduit B (50), and the top of the fixed box (10) is fixed with a limiting cylinder (80) outside the conduit A (40) and the conduit B (50); the top of the partition plate (90) is arc-shaped and extends into the limiting cylinder (80), and the bottom of the limiting cylinder (80) is inverted cone-shaped. The conduit A (40) and the conduit B (50) are limited by the limiting cylinder (80) and extend downward, and then the pipe diameter is compressed by contacting the top of the partition plate (90). Guide plates (70) are provided on both sides of the partition plate (90). The side of the catheter A (40) and catheter B (50) away from the double-lumen syringe / bag (30) is placed on the guide plate (70). The inner rear wall of the fixed box (10) is fixed with a peristaltic pump (60). The peristaltic guide wheel (63) on the peristaltic pump (60) abuts against the catheter A (40) or the catheter B (50).

2. The dual-cavity PICC flushing device as described in claim 1, characterized in that, The peristaltic pump (60) includes a motor (61), the output shaft of the motor (61) is provided with a polygonal frame (62), and there are multiple peristaltic guide wheels (63) which are rotatably connected to the polygonal frame (62) through rotating shafts.

3. The dual lumen PICC spike device of claim 1, wherein, The inner rear wall of the fixed box (10) is fixed with a guide wheel plate (64). The guide wheel plate (64) is arc-shaped and located on the peristaltic guide wheel (63). The outer wall of the peristaltic guide wheel (63) slides along the inner side of the guide wheel plate (64).

4. The dual lumen PICC spike device of claim 1, wherein, The guide plate (70) has an adapter groove (71) for accommodating conduit A (40) or conduit B (50).

5. The dual lumen PICC spike device of claim 1, wherein, The guide plate (70) is arc-shaped on the side near the peristaltic guide wheel (63), and the center of the arc is concentric with the rotation center of the peristaltic pump (60).

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