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 locking device has the technical effects that the limiting column set is arranged and can resist excessive downward pressing of the locking pressing plate, and the hose can be prevented from being excessively pressed.

Description

Technical Field

[0001] The present invention belongs to the use of medical devices, and specifically relates to a stop clamp for an infusion pipeline. Background Art

[0002] At present, indwelling venous catheters have been widely used clinically. To avoid blood backflow when the infusion action is interrupted, a stop clamp must be installed on the infusion pipeline of the indwelling venous catheter to compress the infusion pipeline to stop the flow of liquid in the pipeline.

[0003] The stop clamp can be referred to the patent document of CN107335110A.

[0004] Clinically, when medical staff perform locking and stopping water, they need to press down the convex part to complete the locking. However, sometimes there will be "over-pressing" (that is, the movement amplitude of the "convex part" is too large). "Over-pressing" has two defects: S1. When locking, the hose will be "pinched flat". If there is "over-pressing", the hose will be "over-extruded". The wall thickness of the hose is relatively thin, and the hose may be "squeezed and broken" resulting in the outflow of the liquid medicine from the hose; S2. When locking, the hose will be "pinched flat". If there is "over-pressing", the hose will be "over-extruded". When the locking is completed, the "over-extruded" hose will partially rebound. After the rebound, the pressure in the space inside the "extruded" hose becomes smaller, resulting in the backflow of the downstream liquid medicine and causing blood backflow. If the blood backflow time is slightly longer, it is extremely easy to cause blood blockage and form thrombus, and then lead to medical accidents. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: how to design a stop clamp to prevent the hose from being "over-pressed".

[0006] The technical solution of the present invention is specifically as follows: A stop clamp for an infusion pipeline, which is in a "C" shape as a whole, includes a left part, a middle part, and a right part fixedly connected in sequence. A left through hole is provided on the left part, and a right through hole is provided on the right part. The left through hole and the right through hole are used for the hose to pass through. A lower clamping block is fixed on the middle part, and an upper clamping block is fixed on the right part. The lower clamping block and the upper clamping block are used to clamp the hose. A locking pressing plate is formed on the upper part of the right part. Locking members are provided at the free ends of the left part and the locking pressing plate. A limiting column group is fixed on the middle part, and the limiting column group is located below the locking pressing plate.

[0007] The limiting column group is arranged vertically.

[0008] The limiting column group includes at least two, and is distributed on both sides of the middle part. The limiting column group on one side of the middle part is called the "inner limiting column group", and the limiting column group on the other side of the middle part is called the "outer limiting column group". The space between the inner limiting column group and the outer limiting column group is the hose passing space.

[0009] The hose is fitted with the hose clearance through the space.

[0010] The limiting post group includes three, which are distributed on both sides of the middle part. The projections of the three limiting post groups on the middle part are the three vertices of an acute triangle.

[0011] A fixing inclined plate is fixed between the upper clamping block and the free end of the locking pressing plate. The width of the inclined plate is smaller than the width of the locking pressing plate, and the inclined plate can slide within the hose passing space.

[0012] The inclined plate, the upper clamping block and the locking pressing plate form a triangular frame, and the inside of the triangular frame is hollow.

[0013] The extrusion surfaces of the lower clamping block and the upper clamping block are both arc surfaces.

[0014] Compared with the prior art, the technical effect of the present invention is that the present invention is provided with a limiting post group, which can resist the excessive downward pressing of the locking pressing plate and can prevent the hose from being "excessively pressed". Description of the Drawings

[0015] Figure 1 It is the three-dimensional schematic diagram (1) of the present invention.

[0016] Figure 2 It is the three-dimensional schematic diagram (2) of the present invention.

[0017] Figure 3 It is the front view schematic diagram of the present invention.

[0018] Figure 4 It is the three-dimensional schematic diagram (3) of the present invention.

[0019] Figure 5 It is the three-dimensional schematic diagram (4) of the present invention.

[0020] Figure 6 It is the three-dimensional schematic diagram (5) of the present invention.

[0021] Figure 7 It is the front view schematic diagram of the use state of the present invention.

[0022] Specific Embodiment The present invention will be introduced in detail below in conjunction with the drawings and its specific embodiments.

[0023] As Figures 1-6 , an infusion pipeline flow stop clamp, which is in a "C" shape as a whole, includes a left part 10, a middle part 20, and a right part 30 that are sequentially fixed together. A left through hole 12 is provided on the left part 10, and a right through hole 33 is provided on the right part 30. The left through hole 12 and the right through hole 33 are used for the hose to pass through.

[0024] As Figure 1, the middle part 20 fixes the lower clamping block 21, and the right part 30 fixes the upper clamping block 32. The lower clamping block 21 and the upper clamping block 32 are used to clamp the hose.

[0025] Such as Figure 1 , on the upper part of the right part 30, a locking pressure plate 35 is formed. Locking parts are provided at both the left part 10 and the free end of the locking pressure plate 35, which are used to determine "whether the lower clamping block 21 and the upper clamping block 32 work".

[0026] The middle part 20 fixes the limit post group 22, and the limit post group 22 is located below the locking pressure plate 35.

[0027] The "limit post group" in this specification includes the case where there is only one limit post.

[0028] For anti-pressure, the limit post group 22 is arranged vertically.

[0029] In practice, when locking, the hose will swing left and right. Refer to the patent document with the authorization announcement number CN222605135U. For this reason, the further improvement is as follows: The limit post group 22 includes at least two, and is distributed on both sides of the middle part 20. The limit post group 22 on one side of the middle part 20 is called the "inner limit post group 22", and the limit post group 22 on the other side of the middle part 20 is called the "outer limit post group 22". The space between the inner limit post group 22 and the outer limit post group 22 is the hose passing space 222.

[0030] In practice, when locking and pressing down, the upper clamping block 32 may also swing. For this reason, the further improvement is as follows: An inclined plate 33 is fixed between the free end of the upper clamping block 32 and 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 passing space 222.

[0031] To facilitate the sliding of the hose clamp on the hose, the hose passing space 222 is in clearance fit with the hose. This clearance is wide enough to facilitate the sliding of the hose clamp on the hose.

[0032] To prevent its own deformation, the limit post group 22 includes three, which are distributed on both sides of the middle part 20. The projections of the three limit post groups 22 on the middle part 20 are the three vertices of an acute triangle.

[0033] 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.

[0034] To reduce the damage to the hose, the extrusion surfaces of the lower clamping block 21 and the upper clamping block 32 are both arc surfaces.

[0035] The locking member of the left part 10 is a hook 11, and the locking member of the right part 30 is a protrusion 31. When the protrusion 31 enters the hook 11, the free ends of the left part 10 and the right part 30 are locked.

[0036] The curvature of the bent portion where the left through hole 12 is located, the bent portion above the left through hole 12, and the bent portion below the left through hole 12 match, forming a resetable hinge structure, so that the hemostatic clamp can be switched between the two states of "locking and stopping water and allowing liquid medicine to flow".

[0037] Its working principle is as follows: S10. Liquid medicine flows As Figures 1-7 , when the liquid medicine passes, as Figure 7 , the free ends of the left part 10 and the right part 30 are in a loose state, and the liquid medicine in the hose 90 passes normally.

[0038] S20. Lock and stop water It includes the following steps: S21. When it is necessary to stop water, press down the locking pressure plate 35, and the resetable hinge structure is compressed, so that the protrusion 31 is lower than entering the hook 11.

[0039] In this step, if the situation of "over-pressing" may occur, after the lower surface 351 of the locking pressure plate 35 touches the upper end 221 of the limit column group 22, it is blocked by the limit column group 22, and the locking pressure plate 35 cannot continue to move downward, and the situation of "over-pressing" will not occur.

[0040] S22. Release the pressing of the locking pressure plate 35, the resetable hinge structure resets, 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 pinched flat by the lower clamping block 21 and the upper clamping block 32, and the liquid medicine cannot pass.

[0041] Features of this application: S1. The present invention is provided with a limit column group, which can resist the excessive downward pressing of the locking pressure plate and can prevent the hose from being "over-pressed".

[0042] S2. The height of the limit column group is configured to synchronously restrict the vertical displacement of the locking pressure plate 35 in the locked state, prevent the excessive downward pressing force from causing the movable end of the locking part to be pressed down excessively and rebound, resulting in an increase in the volume of the hose at the front end of the locking point and causing the blood in the human body to flow back into the indwelling needle infusion tube, which is likely to form a blood clot. + S3. The height of the limit column group is configured to synchronously restrict the vertical displacement of the movable limit plate in the locked state, prevent the excessive downward pressing force from causing damage to the infusion tube.

[0043] S4. The hose passes through the hose passing space 222 and is double - constrained by the "inner limiting post group 22" and the "outer limiting post group 22", so the hose will not swing left and right.

[0044] S5. The inclined plate 33 passes through the hose passing space 222 and is double - constrained by 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 the locking pressure plate 35 will not swing left and right.

[0045] For other contents, please refer to the prior art.

[0046] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the overall concept of the present invention, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present invention.

Claims

1. A flow-stop clamp for an infusion line, which is in a "C" shape as a whole and comprises a left portion (10), a middle portion (20), and a right portion (30) fixed together in sequence, wherein the left portion (10) is provided with a left through hole (12), and the right portion (30) is provided with a right through hole (33), the left through hole (12) and the right through hole (33) are used for a hose to pass through, the middle portion (20) is fixed with a lower clamping block (21), and the right portion (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 hose, the upper portion of the right portion (30) forms a locking plate (35), and the free ends of the left portion (10) and the locking plate (35) are both provided with locking members, characterized in that: The middle part (20) is fixed with a limiting column group (22), and the limiting column group (22) is located below the locking pressure plate (35).

2. The infusion line flow stop clamp according to claim 1, characterized in that: The limiting column group (22) is arranged vertically.

3. The infusion line flow stop clamp according to claim 2, characterized in that: The limiting column group (22) includes at least two and is distributed on both sides of the middle portion (20). The limiting column group (22) on one side of the middle portion (20) is called the "inner limiting column group (22)", and the limiting column group (22) on the other side of the middle portion (20) is called the "outer limiting column group (22)". The space between the inner limiting column group (22) and the outer limiting column group (22) is the hose passing space (222).

4. The infusion line flow stop clamp according to claim 3, characterized in that: The hose passes through the space (222) and is clearance-fitted with the hose.

5. The infusion line flow stop clamp according to claim 3, characterized in that: The limiting column groups (22) include three, which are distributed on both sides of the middle portion (20), and the projections of the three limiting column groups (22) on the middle portion (20) are the three vertices of an acute triangle.

6. The infusion line flow stop clamp according to claim 3, characterized in that: A slanted plate (33) is fixed between the upper clamping block (32) and the free end of the locking pressure plate (35). The width of the slanted plate (33) is smaller than the width of the locking pressure plate (35), and the slanted plate (33) can slide in the hose passing space (222).

7. The infusion line flow stop clamp according to claim 6, characterized in that: 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 infusion line flow stop clamp according to claim 1, characterized in that: The extrusion surfaces of the lower clamping block (21) and the upper clamping block (32) are both arc surfaces.

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