Flow stopping clamp for infusion pipeline

Abstract

An infusion pipeline flow stopping clamp is integrally in a C shape and comprises a left part, a middle part and a right part which are sequentially fixed together, a left through hole is formed in the left part, a right through hole is formed in the right part, a hose passes through the left through hole and the right through hole, a lower clamping block is fixed to the middle part, an upper clamping block is fixed to the right part, and the lower clamping block and the upper clamping block are used for clamping the hose. A locking pressing plate is formed on the upper portion of the right portion, locking pieces are arranged at the free end of the left portion and the free end of the locking pressing plate, and a limiting column set is fixed to the middle and located below the locking pressing plate. Compared with the prior art, the hose connector has the technical effects that the limiting column group is arranged, so that excessive pressing of the locking pressing plate can be resisted, and the hose can be prevented from being excessively pressed.

Description

A type of infusion tubing flow stop clamp Technical Field

[0001] This utility model pertains to medical devices, specifically to an infusion tubing stop clamp. Background Technology

[0002] Currently, indwelling intravenous catheters are widely used in clinical practice. To prevent backflow when the infusion process is interrupted, a flow stop clamp must be installed on the infusion line of the indwelling intravenous catheter to compress the infusion line and stop the flow of fluid inside the line.

[0003] For details on the water-stopping clamp, please refer to patent document CN107335110A.

[0004] In clinical practice, when performing a locking and sealing procedure, medical staff need to press down on the protruding part to complete the locking. However, sometimes "over-pressing" (meaning excessive movement of the "protruding part") occurs, which has two drawbacks:

[0005] S1. When locking, the tubing will be "flattened". If "excessive pressure" is applied, the tubing will be "over-squeezed". Since the tubing wall is relatively thin, the tubing may be "ruptured", causing the medicine to leak out.

[0006] S2. During locking, the tubing will be "flattened". If "excessive pressure" is applied, the tubing will be "over-compressed". When locking is complete, the "over-compressed" tubing will partially spring back. After springing back, the pressure inside the "compressed" tubing decreases, causing downstream medication to flow back, resulting in backflow of blood. If backflow continues for even a short time, it can easily cause blood clots and lead to medical accidents. Summary of the Invention

[0007] The technical problem this invention aims to solve is: how to design a water-stop clamp to prevent the hose from being "over-pressed".

[0008] The specific technical solution of this utility model is as follows:

[0009] An infusion tubing stop clamp, shaped like a "C", includes a left, middle, and right section fixed together in sequence. The left section has a left through hole, and the right section has a right through hole, which are used for the passage of a flexible tube. A lower clamping block is fixed in the middle section, and an upper clamping block is fixed in the right section. The lower and upper clamping blocks are used to clamp the flexible tube. A locking pressure plate is formed in the upper part of the right section. Locking elements are provided at the free ends of the left section and the locking pressure plate. A set of limiting posts is fixed in the middle section, and the set of limiting posts is located below the locking pressure plate.

[0010] The limit post group is set vertically.

[0011] The limiting post assembly includes at least two posts, which are distributed on both sides of the middle section. The limiting post assembly on one side of the middle section is called the "inner limiting post assembly", and the limiting post assembly on the other side of the middle section is called the "outer limiting post assembly". The space between the inner limiting post assembly and the outer limiting post assembly is the passage space for the flexible hose.

[0012] The hose is fitted with a space and a hose clearance.

[0013] The limiting post group consists of three posts, distributed on both sides of the middle section. The projection of the three limiting post groups onto the middle section forms the three vertices of an acute triangle.

[0014] An inclined plate is fixed between the upper clamping block and the free end of the locking pressure plate. The width of the inclined plate is smaller than the width of the locking pressure plate, and the inclined plate can slide within the space through which the hose passes.

[0015] The inclined plate, the upper clamping block, and the locking pressure plate form a triangular frame, and the interior of the triangular frame is hollow.

[0016] The pressing surfaces of both the lower clamping block and the upper clamping block are arc surfaces.

[0017] Compared with the prior art, the technical effect of this utility model is that it is equipped with a limiting post assembly, which can resist excessive downward pressure of the locking plate and prevent the hose from being "over-pressed". Attached Figure Description

[0018] Figure 1 is a three-dimensional schematic diagram of the present invention (1).

[0019] Figure 2 is a three-dimensional schematic diagram of the present invention (2).

[0020] Figure 3 is a front view schematic diagram of this utility model.

[0021] Figure 4 is a three-dimensional schematic diagram of this utility model (3).

[0022] Figure 5 is a three-dimensional schematic diagram of the present invention (4).

[0023] Figure 6 is a three-dimensional schematic diagram of this utility model (5).

[0024] Figure 7 is a front view of the present invention in use. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0026] As shown in Figures 1-6, an infusion tubing flow stop clamp is generally "C" shaped and includes a left part 10, a middle part 20, and a right part 30 that are fixed together in sequence. The left part 10 is provided with a left through hole 12, and the right part 30 is provided with a right through hole 33. The left through hole 12 and the right through hole 33 are used for the passage of the tubing.

[0027] As shown in Figure 1, the lower clamping block 21 is fixed in the middle part 20, and the upper clamping block 32 is fixed in the right part 30. The lower clamping block 21 and the upper clamping block 32 are used to clamp the hose.

[0028] As shown in Figure 1, a locking pressure plate 35 is formed on the upper part of the right part 30, and locking components are provided on the free ends of the left part 10 and the locking pressure plate 35 to determine whether the lower clamping block 21 and the upper clamping block 32 are working.

[0029] The middle part 20 is fixed with a limit post group 22, which is located below the locking pressure plate 35.

[0030] The term "limiting post assembly" in this manual includes the case where there is only one limiting post.

[0031] To withstand pressure, the limit column group 22 is set vertically.

[0032] In practice, the hose swings from side to side when locked, as described in patent document CN222605135U. Therefore, the following improvements are made:

[0033] The limiting post group 22 includes at least two and is distributed on both sides of the middle part 20. The limiting post group 22 on one side of the middle part 20 is called the "inner limiting post group 22", and the limiting post group 22 on the other side of the middle part 20 is called the "outer limiting post group 22". The space between the inner limiting post group 22 and the outer limiting post group 22 is the hose passage space 222.

[0034] In practice, the upper clamping block 32 may wobble when the locking mechanism is pressed down. Therefore, the following improvements are made:

[0035] An inclined plate 33 is fixed between the upper clamping block 32 and the free end of the locking pressure plate 35. The width of the inclined plate 33 is smaller than the width of the locking pressure plate 35, and the inclined plate 33 can slide within the hose passage space 222.

[0036] To facilitate the sliding of the water-stop clamp on the hose, the hose is fitted with a gap through space 222. This gap is wide enough to allow the water-stop clamp to slide on the hose.

[0037] To prevent deformation, the limiting post group 22 consists of three posts, distributed on both sides of the middle part 20. The projection of the three limiting post groups 22 onto the middle part 20 is the three vertices of an acute triangle.

[0038] In order to save materials while maintaining strength, the inclined plate 33, the upper clamping block 32 and the locking pressure plate 35 form a triangular frame, and the interior 34 of the triangular frame is hollow.

[0039] To minimize damage to the hose, the pressing surfaces of both the lower clamping block 21 and the upper clamping block 32 are arc-shaped.

[0040] The locking element of the left part 10 is a hook 11, and the locking element of the right part 30 is a protrusion 31. When the protrusion 31 enters the hook 11, the locking of the free ends of the left part 10 and the right part 30 is completed.

[0041] The curvature of the curved portion where the left through hole 12 is located, as well as the curved portion above and below the left through hole 12, are matched to form a resettable hinge structure, so that the water-stopping clamp can switch between "locked water-stopping and liquid flow" states.

[0042] Its working principle is as follows:

[0043] S10, Liquid Circulation

[0044] As shown in Figures 1-7, when the medicine is flowing through, as shown in Figure 7, the free ends of the left part 10 and the right part 30 are in a loose state, and the medicine in the hose 90 flows through normally.

[0045] S20, Locking Waterproofing

[0046] Includes the following steps:

[0047] S21. When water stoppage is required, press down on the locking plate 35 to compress the reset hinge structure, so that the protrusion 31 is lower than the hook 11.

[0048] In this step, if there is a possibility of "over-pressing", after the lower surface 351 of the locking plate 35 contacts the upper end 221 of the limiting post group 22, it is blocked by the limiting post group 22, and the locking plate 35 cannot continue to move downward, so the "over-pressing" situation will not occur.

[0049] S22. Release the pressing and locking plate 35, the resetting hinge structure is reset, the protrusion 31 enters the hook 11, the free ends of the left part 10 and the right part 30 are locked together, the hose 90 is flattened by the lower clamping block 21 and the upper clamping block 32, and the medicine cannot pass through.

[0050] Features of this application:

[0051] S1. This utility model is equipped with a limiting post assembly, which can resist excessive downward pressure of the locking plate and prevent the hose from being "over-pressed".

[0052] S2. The height configuration of the limiting post group is to synchronously constrain the vertical displacement of the locking plate 35 in the locked state, preventing excessive downward pressure from causing excessive downward pressure on the movable end of the locking part, resulting in excessive rebound, which could cause the volume of the hose at the front end of the locking point to increase, leading to blood flowing back into the indwelling needle infusion tube and easily forming a thrombus.

[0053] S3. The height of the limiting post group is configured to synchronously constrain the vertical displacement of the movable limiting plate in the locked state, so as to prevent excessive downward pressure from causing pressure damage to the infusion tube.

[0054] S4. The hose passes through the hose passage space 222 and is constrained by both the "inner limiting post group 22" and the "outer limiting post group 22", so the hose will not swing left and right.

[0055] S5. The inclined plate 33 passes through the space 222 through the hose and is constrained by both the "inner limiting post group 22" and the "outer limiting post group 22", which can maintain the stability of the locking pressure plate 35 during downward movement and prevent the locking pressure plate 35 from swinging left and right.

[0056] For other details, please refer to the existing technology.

[0057] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A flow-stop clamp for an infusion line, generally shaped like a "C", comprising a left part (10), a middle part (20), and a right part (30) fixed together in sequence. The left part (10) is provided with a left through hole (12), and the right part (30) is provided with a right through hole (33). The left through hole (12) and the right through hole (33) are used for the passage of a flexible tube. The middle part (20) is fixed with a lower clamping block (21), and the right part (30) is fixed with an upper clamping block (32). The lower clamping block (21) and the upper clamping block (32) are used to clamp the flexible tube. A locking pressure plate (35) is formed on the upper part of the right part (30). Locking elements are provided on the free ends of the left part (10) and the locking pressure plate (35). The clamp is characterized in that: The middle part (20) is fixed with a limit post assembly (22), which is located below the locking pressure plate (35).

2. The occluding clamp of claim 1, wherein: The limit post group (22) is set vertically.

3. The occluding clamp of claim 2, wherein: The limiting post group (22) includes at least two and is distributed on both sides of the middle part (20). The limiting post group (22) on one side of the middle part (20) is called the "inner limiting post group (22)" and the limiting post group (22) on the other side of the middle part (20) is called the "outer limiting post group (22)". The space between the inner limiting post group (22) and the outer limiting post group (22) is the hose passage space (222).

4. The occluding clamp of claim 3, wherein: The hose is fitted with the hose clearance through the space (222).

5. The occluding clamp of claim 3 wherein: The limiting post group (22) consists of three, distributed on both sides of the middle part (20), and the projection of the three limiting post groups (22) on the middle part (20) is the three vertices of an acute triangle.

6. The infusion line flow-stopping clamp as described in claim 3, characterized in that: An inclined plate (33) is fixed between the upper clamping block (32) and the free end of the locking pressure plate (35). The width of the inclined plate (33) is smaller than the width of the locking pressure plate (35), and the inclined plate (33) can slide within the hose passage space (222).

7. The occluding clamp of claim 6, wherein: The inclined plate (33), the upper clamping block (32) and the locking pressure plate (35) form a triangular frame, and the interior (34) of the triangular frame is hollow.

8. The occluding clamp of claim 1 wherein: The extrusion surfaces of both the lower clamping block (21) and the upper clamping block (32) are arc surfaces.

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