Micro-flow regulator and infusion device

Abstract

The invention discloses a micro-flow regulator and an infusion device. The micro-flow regulator comprises an upper shell and a lower shell which are mutually buckled and rotationally connected, a rotating groove is formed in a central shaft of the upper shell, and a clamping hole is formed in the groove bottom of the rotating groove; a rotating shaft is arranged on a central shaft of the lower shell, a clamping column ring is arranged at the top end of the rotating shaft, when the lower shell and the upper shell are buckled, the rotating shaft extends into the rotating groove, and the clamping column ring is rotationally clamped in the clamping hole; a first guide pipe is arranged in the upper shell in the central axis direction of the upper shell, and a second guide pipe is arranged in the lower shell in the central axis direction of the lower shell. And the first guide pipe and the second guide pipe can be butted and communicated by relatively rotating the upper shell and the lower shell. Micro-flow adjustment can be conducted by means of the rotating angles of the upper shell and the lower shell, the flow can be accurately adjusted, position movement of the upper shell and the lower shell is avoided, and it is guaranteed that the liquid medicine flow does not change.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a micro-flow regulator and an infusion device. Background Art

[0002] The flow regulator used in an ordinary infusion set is usually sleeved on the outside of the infusion hose, and relies on a pressure wheel that gradually approaches and presses the infusion hose to control the cross-sectional area inside the infusion hose, thereby adjusting the flow rate. However, this regulator cannot adjust micro-flows. In addition, this regulator has no flow scale, so the flow rate cannot be accurately adjusted. At the same time, as time goes by, the medicine keeps flowing, causing the roller position to move, the medicine flow gradually increases, and the amount of medicine entering the patient's body is uneven, which may cause serious medical accidents to the patient. Summary of the invention

[0003] The embodiments of the present application provide a micro-flow regulator and an infusion device, which can avoid the technical problem that the flow regulator used in the ordinary infusion device cannot adjust the micro-flow, cannot accurately adjust the flow size, and ensure the change of the flow rate of the liquid medicine.

[0004] The embodiment of the present application provides a micro flow regulator, comprising an upper shell and a lower shell that are mutually engaged and rotatably connected; The central axis of the upper shell is provided with a rotation groove, and the bottom of the rotation groove is provided with a clamping hole; The central axis of the lower shell is provided with a rotating shaft, and the top end of the rotating shaft is provided with a clamping column ring. When the lower shell is buckled with the upper shell, the rotating shaft extends into the rotating groove, and the clamping column ring is rotatably clamped in the clamping hole; A first conduit is provided in the upper shell along its central axis, and a second conduit is provided in the lower shell along its central axis; the first conduit can be connected to the second conduit by relatively rotating the upper shell and the lower shell.

[0005] Furthermore, the micro-flow regulator also includes a sealing ring located between the upper shell and the lower shell; the sealing ring is provided with a liquid guide hole; the diameter of the liquid guide hole is the same as the diameter of the first conduit, and the diameter of the first conduit is the same as the diameter of the second conduit.

[0006] Furthermore, the sealing ring is fixed on the lower shell, the second conduit is connected to the liquid guide hole correspondingly, and the first conduit can be connected to the liquid guide hole by relatively rotating the upper shell and the lower shell.

[0007] Furthermore, when the sealing ring is fixed on the lower shell, a blocking block is provided at the edge of the sealing ring, the lower shell is provided with a limiting rib arranged around the rotating shaft, the limiting rib is provided with a snap fit corresponding to the position of the blocking block, a countersunk hole is formed between the limiting rib and the rotating shaft, the sealing ring is arranged in the countersunk hole, the outer edge of the sealing ring is snapped with the inner side of the limiting rib, and the blocking block is snapped in the snap fit.

[0008] Furthermore, a second workbench is provided on the edge of the rotating shaft, a through hole is provided at the center of the sealing ring, the through hole of the sealing ring is clamped with the second workbench, the depth of the countersunk hole is equal to the thickness of the sealing ring, the thickness of the clamping block is equal to the thickness of the sealing ring, and the depth of the clamping port is equal to the thickness of the sealing ring.

[0009] Furthermore, the lower shell is provided with an annular pressing groove arranged around the rotating shaft between the outer side of the limiting rib and the second outer annular wall of the lower shell, and an annular positioning block is extended from the edge of the first outer annular wall of the upper shell; when the lower shell is buckled with the upper shell, the annular positioning block can be rotatably clamped in the annular pressing groove.

[0010] Furthermore, the countersunk hole is flush with the bottom surface of the bayonet, and the annular pressing groove and the limiting rib are arranged at intervals; the upper shell is provided with a limiting boss on the inner side of the annular positioning block, and the limiting boss is in relative rotational abutment with the limiting rib.

[0011] Furthermore, the sealing ring is fixed on the upper shell, the first conduit is connected to the liquid guide hole correspondingly, and the second conduit can be connected to the liquid guide hole by relatively rotating the upper shell and the lower shell.

[0012] Furthermore, a first fixing hole structure for fixing the first conduit is provided in the upper shell, and a second fixing hole structure for fixing the second conduit is provided in the lower shell.

[0013] An embodiment of the present application also provides an infusion device, which includes the micro-flow regulator described above.

[0014] The micro-flow regulator and infusion device provided in the embodiments of the present application can make the first catheter and the second catheter dock and connect by relatively rotating the upper shell and the lower shell. The docking and connection diameter of the first catheter and the second catheter can be adjusted by utilizing the rotation angle of the upper shell and the lower shell, thereby adjusting the micro-flow and accurately adjusting the flow without causing the position movement of the upper shell and the lower shell, thereby ensuring that the flow rate of the liquid medicine will not change. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0016] Figure 1 A schematic diagram of the exploded structure of a micro flow regulator provided in an embodiment of the present application.

[0017] Figure 2 A cross-sectional view of a micro flow regulator provided in an embodiment of the present application.

[0018] Figure 3 A bottom view of the upper shell provided in an embodiment of the present application.

[0019] Figure 4 A cross-sectional view of the upper shell provided in an embodiment of the present application.

[0020] Figure 5 A top view of the upper shell provided in an embodiment of the present application.

[0021] Figure 6 A schematic diagram of the structure of the sealing ring provided in an embodiment of the present application.

[0022] Figure 7 The top surface of the lower shell provided in the embodiment of the present application.

[0023] Figure 8 A cross-sectional view of the lower shell provided in an embodiment of the present application.

[0024] Fig. 9 A schematic diagram of the structure of another micro flow regulator provided in an embodiment of the present application.

[0025] The markings in the figure are as follows: Upper shell 1, first outer annular wall 11, first workbench 12, liquid inlet hole 13, first conduit 14, rotation groove 15, clamping hole 16, annular positioning block 17, limiting boss 18, first fixing hole structure 19, Sealing ring 2, through hole 21, liquid guide hole 22, block 23, Lower shell 3, rotating shaft 31, clamping column ring 311, countersunk hole 32, second outer annular wall 33, second workbench 34, liquid outlet 35, second conduit 36, annular pressing groove 37, limiting rib 38, clamping mouth 381, second fixing hole structure 39, annular groove 310. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0027] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] like Figure 1 , Figure 2 As shown, an embodiment of the present application provides a micro-flow regulator, including an upper shell 1 and a lower shell 3 that are interlocked and rotatably connected to each other.

[0029] like Figure 3 , Figure 4 , Figure 5 As shown, a rotation groove 15 is provided on the central axis of the upper shell 1 , and a clamping hole 16 is provided at the bottom of the rotation groove 15 .

[0030] like Figure 7 , Figure 8 As shown, the central axis of the lower shell 3 is provided with a rotating shaft 31, and the top of the rotating shaft 31 is provided with a clamping column ring 311. When the lower shell 3 is buckled with the upper shell 1, the rotating shaft 31 extends into the rotating groove 15, and the clamping column ring 311 can be rotatably clamped in the clamping hole 16.

[0031] A first conduit 14 is disposed in the upper shell 1 along its central axis, and a second conduit 36 ​​is disposed in the lower shell 3 along its central axis. By relatively rotating the upper shell 1 and the lower shell 3, the first conduit 14 and the second conduit 36 ​​can be connected and conducted.

[0032] like Figure 6 As shown, the micro-flow regulator also includes a sealing ring 2 located between the upper shell 1 and the lower shell 3; the sealing ring 2 is provided with a liquid guide hole 22; the diameter of the liquid guide hole 22 is the same as the diameter of the first conduit 14, and the diameter of the first conduit 14 is the same as the diameter of the second conduit 36.

[0033] like Figure 3 , Figure 4 , Figure 5 As shown, the upper shell 1 is provided with a first outer annular wall 11, the upper shell 1 and the sealing ring 2 contacting surface is a first workbench 12, preferably the first conduit 14 is a liquid inlet pipe, and the opening of the first conduit 14 is a liquid inlet hole 13. The diameter of the liquid guide hole 22 is the same as the diameter of the liquid inlet hole 13.

[0034] like Figure 7 , Figure 8 As shown, the lower shell 3 is provided with a second outer annular wall 33, and the contact surface between the lower shell 3 and the first workbench 12 is a second workbench 34. Preferably, the second conduit 36 ​​is a liquid outlet pipe, and the opening of the second conduit 36 ​​is a liquid outlet hole 35.

[0035] Furthermore, the sealing ring 2 is fixed on the lower shell 3, the second conduit 36 ​​is connected to the liquid guide hole 22, and the first conduit 14 can be connected to the liquid guide hole 22 by relatively rotating the upper shell 1 and the lower shell 3.

[0036] like Figure 7 , Figure 8 As shown, when the sealing ring 2 is fixed on the lower shell 3, a clamping block 23 is provided at the edge of the sealing ring 2, and the lower shell 3 is provided with a limiting rib 38 arranged around the rotating shaft 31. The limiting rib 38 is provided with a clamping slot 381 corresponding to the position of the clamping block 23, and a countersunk hole 32 is formed between the limiting rib 38 and the rotating shaft 31. The sealing ring 2 is arranged in the countersunk hole 32, and the outer edge of the sealing ring 2 is clamped with the inner side of the limiting rib 38, and the clamping block 23 is clamped in the clamping slot 381.

[0037] like Figure 7 , Figure 8 As shown, the edge of the rotating shaft 31 is provided with a second workbench 34, the center of the sealing ring 2 is provided with a through hole 21, the through hole 21 of the sealing ring 2 is engaged with the second workbench 34, the depth of the counterbore 32 is equal to the thickness of the sealing ring 2, the thickness of the block 23 is equal to the thickness of the sealing ring 2, and the depth of the bayonet 381 is equal to the thickness of the sealing ring 2. It can be understood that the second workbench 34 is flush with the surface of the sealing ring 2 and both are in contact with the first workbench 12.

[0038] like Figure 8 As shown, the lower shell 3 is provided with an annular pressing groove 37 arranged around the rotating shaft 31 between the outer side of the limiting rib 38 and the second outer annular wall 33 of the lower shell 3, and an annular positioning block 17 extends from the edge of the first outer annular wall 11 of the upper shell 1; when the lower shell 3 is buckled with the upper shell 1, the annular positioning block 17 can be rotatably clamped in the annular pressing groove 37.

[0039] like Figure 7 As shown, the countersunk hole 32 is flush with the bottom surface of the bayonet 381, and the annular pressing groove 37 is spaced apart from the limiting rib 38; the upper shell 1 is provided with a limiting boss 18 on the inner side of the annular positioning block 17, and the limiting boss 18 is in relative rotational abutment with the limiting rib 38.

[0040] Furthermore, the sealing ring 2 is fixed on the upper shell 1 , the first conduit 14 is connected to the liquid guide hole 22 , and the second conduit 36 ​​can be connected to the liquid guide hole 22 by relatively rotating the upper shell 1 and the lower shell 3 .

[0041] like Figure 2 As shown, a first fixing hole structure 19 for fixing the first conduit 14 is provided in the upper shell 1 , and a second fixing hole structure 39 for fixing the second conduit 36 ​​is provided in the lower shell 3 .

[0042] Preferably, if Fig. 9 As shown, an annular groove 310 is also provided in the annular pressing groove 37. Due to the skewness of the clamping column, the upper shell 1 may be tilted. At this time, the three annular positioning blocks 17 on the upper shell 1 may be pressed on the annular groove 310 of the lower shell 3 when the upper shell rotates, thereby playing a balancing role and avoiding the tilting problem of the upper shell 1 caused by the skewness of the rotating shaft 31.

[0043] An embodiment of the present application also provides an infusion device, which includes the micro-flow regulator described above.

[0044] The micro-flow regulator and infusion device provided in the embodiments of the present application can make the first catheter 14 and the second catheter 36 docked and connected by relatively rotating the upper shell 1 and the lower shell 3. The docking and connection diameter of the first catheter 14 and the second catheter 36 can be adjusted by utilizing the rotation angle of the upper shell 1 and the lower shell 3, thereby adjusting the micro-flow and accurately adjusting the flow without causing the position movement of the upper shell 1 and the lower shell 3, thereby ensuring that the flow rate of the liquid medicine will not change.

[0045] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0046] The above is a detailed introduction to a micro-flow regulator and an infusion device provided in the embodiments of the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A micro flow regulator, characterized in that: It comprises an upper shell and a lower shell which are mutually buckled and rotatably connected; The central axis of the upper shell is provided with a rotation groove, and the bottom of the rotation groove is provided with a clamping hole; The central axis of the lower shell is provided with a rotating shaft, and the top end of the rotating shaft is provided with a clamping column ring. When the lower shell is buckled with the upper shell, the rotating shaft extends into the rotating groove, and the clamping column ring is rotatably clamped in the clamping hole; A first conduit is provided in the upper shell along its central axis, and a second conduit is provided in the lower shell along its central axis; the first conduit can be connected to the second conduit by relatively rotating the upper shell and the lower shell.

2. The micro flow regulator according to claim 1, characterized in that: The micro-flow regulator also includes a sealing ring located between the upper shell and the lower shell; the sealing ring is provided with a liquid guide hole; the diameter of the liquid guide hole is the same as the diameter of the first conduit, and the diameter of the first conduit is the same as the diameter of the second conduit.

3. The micro flow regulator according to claim 2, characterized in that: The sealing ring is fixed on the lower shell, the second conduit is connected to the liquid guide hole, and the first conduit can be connected to the liquid guide hole by relatively rotating the upper shell and the lower shell.

4. The micro flow regulator according to claim 3, characterized in that: When the sealing ring is fixed on the lower shell, a blocking block is provided at the edge of the sealing ring, and the lower shell is provided with a limiting rib arranged around the rotating shaft. The limiting rib is provided with a snap-in corresponding to the position of the blocking block, a countersunk hole is formed between the limiting rib and the rotating shaft, the sealing ring is arranged in the countersunk hole, the outer edge of the sealing ring is snapped with the inner side of the limiting rib, and the blocking block is snapped in the snap-in.

5. The micro flow regulator according to claim 4, characterized in that: A second workbench is provided on the edge of the rotating shaft, a through hole is provided at the center of the sealing ring, the through hole of the sealing ring is clamped with the second workbench, the depth of the countersunk hole is equal to the thickness of the sealing ring, the thickness of the clamping block is equal to the thickness of the sealing ring, and the depth of the bayonet is equal to the thickness of the sealing ring.

6. The micro flow regulator according to claim 4, characterized in that: The lower shell is provided with an annular pressing groove arranged around the rotating shaft between the outer side of the limiting rib and the second outer annular wall of the lower shell, and an annular positioning block extends from the edge of the first outer annular wall of the upper shell; when the lower shell is buckled with the upper shell, the annular positioning block can be rotatably clamped in the annular pressing groove.

7. The micro flow regulator according to claim 6, characterized in that: The countersunk hole is flush with the bottom surface of the bayonet, and the annular pressing groove is spaced apart from the limiting rib; the upper shell is provided with a limiting boss on the inner side of the annular positioning block, and the limiting boss is in relative rotational contact with the limiting rib.

8. The micro flow regulator according to claim 2, characterized in that: The sealing ring is fixed on the upper shell, the first conduit is connected to the liquid guide hole, and the second conduit can be connected to the liquid guide hole by relatively rotating the upper shell and the lower shell.

9. The micro flow regulator according to claim 1, characterized in that: A first fixing hole structure for fixing the first conduit is provided in the upper shell, and a second fixing hole structure for fixing the second conduit is provided in the lower shell.

10. An infusion device, characterized in that: A micro-flow regulator comprising any one of claims 1 to 9.

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