Micro-flow regulator and infusion device

Abstract

The utility model 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, in particular to a micro-flow regulator and infusion device. BACKGROUND

[0002] The flow regulator used in common infusion devices is usually sleeved outside the infusion hose and controls the cross-sectional area inside the infusion hose by gradually approaching and pressing the roller to regulate the flow size. However, this regulator cannot regulate micro-flow, and has no flow scale, so it cannot accurately regulate the flow size. In addition, the roller position will move with the continuous flow of the liquid medicine, the liquid flow gradually increases, and the amount of liquid medicine entering the patient's body is uneven, which may cause serious medical accidents to the patient. CONTENT OF THE UTILITY MODEL

[0003] The embodiments of the present application provide a micro-flow regulator and infusion device, which can avoid the technical problems that the flow regulator used in common infusion devices cannot regulate micro-flow and cannot accurately regulate the flow size, and ensure the change of liquid medicine flow.

[0004] The embodiments of the present application provide a micro-flow regulator, which comprises an upper shell and a lower shell rotatably connected to each other.

[0005] The central axis of the upper shell is provided with a rotating groove, and the groove bottom is provided with a clamping hole.

[0006] 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.

[0007] A first conduit is arranged in the upper shell along the central axis direction, and a second conduit is arranged in the lower shell along the central axis direction. By relatively rotating the upper shell and the lower shell, the first conduit and the second conduit can be connected and conducted.

[0008] Further, the micro-flow regulator further comprises 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.

[0009] Further, the sealing ring is fixed on the lower shell, the second conduit is correspondingly conducted with the liquid guide hole, and by relatively rotating the upper shell and the lower shell, the first conduit and the liquid guide hole can be connected and conducted.

[0010] Furthermore, when the sealing ring is fixed on the lower shell, the edge of the sealing ring is provided with a locking block, the lower shell is provided with a limiting rib arranged around the rotating shaft, the limiting rib is provided with a locking slot corresponding to the locking block position, a countersunk hole is formed between the limiting rib and the rotating shaft, the sealing ring is disposed in the countersunk hole, the outer edge of the sealing ring is engaged with the inner side of the limiting rib, and the locking block is engaged in the locking slot.

[0011] Furthermore, the rotating shaft has a second worktable on its edge, the sealing ring has a through hole at its center, the through hole of the sealing ring engages with the second worktable, the depth of the countersunk hole is equal to the thickness of the sealing ring, the thickness of the locking block is equal to the thickness of the sealing ring, and the depth of the locking slot is equal to the thickness of the sealing ring.

[0012] Furthermore, the lower shell has an annular pressure groove arranged around the rotation axis 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 and the upper shell are engaged, the annular positioning block is rotatably locked in the annular pressure groove.

[0013] Furthermore, the countersunk hole is flush with the bottom surface of the bayonet, and the annular pressure 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 and the limiting rib rotate and abut against each other.

[0014] Furthermore, the sealing ring is fixed on the upper shell, the first conduit is connected to the liquid guiding hole, and the second conduit can be connected to the liquid guiding hole by rotating the upper shell and the lower shell relative to each other.

[0015] Furthermore, the upper shell is provided with a first fixing hole structure for fixing the first conduit, and the lower shell is provided with a second fixing hole structure for fixing the second conduit.

[0016] This application also provides an infusion device, which includes the microflow regulator described above.

[0017] The micro-flow regulator and infusion device provided in this application embodiment can connect the first catheter and the second catheter by rotating the upper and lower shells relative to each other. The diameter of the connection between the first catheter and the second catheter can be adjusted by the rotation angle of the upper and lower shells, thereby adjusting the micro-flow rate and accurately regulating the flow rate. The upper and lower shells will not move, ensuring that the flow rate of the drug solution does not change. Attached Figure Description

[0018] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0019] Figure 1 A micro-flow regulator provided by the embodiment of the application has a disassembled structural schematic diagram.

[0020] Figure 2 A micro-flow regulator provided by the embodiment of the application has a sectional view.

[0021] Figure 3 A bottom view of the upper shell provided by the embodiment of the application.

[0022] Figure 4 A sectional view of the upper shell provided by the embodiment of the application.

[0023] Figure 5 A top view of the upper shell provided by the embodiment of the application.

[0024] Figure 6 A structural schematic diagram of the sealing ring provided by the embodiment of the application.

[0025] Figure 7 A top view of the lower shell provided by the embodiment of the application.

[0026] Figure 8 A sectional view of the lower shell provided by the embodiment of the application.

[0027] Figure 9 A structural schematic diagram of another micro-flow regulator provided by the embodiment of the application.

[0028] The identification in the figure is as follows:

[0029] Upper shell 1, first outer annular wall 11, first workbench 12, liquid inlet hole 13, first guide pipe 14, rotating groove 15, clamping hole 16, annular positioning block 17, limiting boss 18, first fixing hole structure 19,

[0030] Sealing ring 2, through hole 21, liquid guide hole 22, clamping block 23,

[0031] Lower shell 3, rotating shaft 31, clamping column ring 311, counterbore 32, second outer annular wall 33, second workbench 34, liquid outlet hole 35, second guide pipe 36, annular pressing groove 37, limiting rib 38, clamping port 381, second fixing hole structure 39, annular groove 310. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person skilled in the art without creative work fall within the protection scope of the application.

[0033] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, or electrical connection or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] As shown in Figure 1 , Figure 2 , the present application provides a kind of micro flow regulator, including mutually buckling rotation connection upper shell 1 and lower shell 3.

[0035] As shown in Figure 3 , Figure 4 , Figure 5 , the center axis of the upper shell 1 is provided with rotating groove 15, and the groove bottom of the rotating groove 15 is provided with clamping hole 16.

[0036] As shown in Figure 7 , Figure 8 , the center axis of the lower shell 3 is provided with rotating shaft 31, and the top end of the rotating shaft 31 is provided with clamping column ring 311, when the lower shell 3 is buckled with the upper shell 1, the rotating shaft 31 is inserted into the rotating groove 15, and the clamping column ring 311 is rotatably clamped in the clamping hole 16.

[0037] The first conduit 14 is arranged in the upper shell 1 along the central axis direction, and the second conduit 36 is arranged in the lower shell 3 along the central axis direction; by relatively rotating the upper shell 1 and the lower shell 3, the first conduit 14 and the second conduit 36 can be butt-jointed and conducted.

[0038] As shown in Figure 6 , the micro flow regulator further comprises a sealing ring 2 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.

[0039] As shown in Figure 3 , Figure 4 , Figure 5 , the upper shell 1 is provided with a first outer annular wall 11, and the abutting surface of the upper shell 1 and the sealing ring 2 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.

[0040] As Figure 7 , Figure 8 shown, the lower shell 3 is provided with a second outer annular wall 33, and the abutting surface of the lower shell 3 with 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.

[0041] Further, the sealing ring 2 is fixed on the lower shell 3, the second conduit 36 is in communication with the liquid guide hole 22, and the first conduit 14 can be in communication with the liquid guide hole 22 by relatively rotating the upper shell 1 and the lower shell 3.

[0042] As Figure 7 , Figure 8 shown, when the sealing ring 2 is fixed on the lower shell 3, the edge of the sealing ring 2 is provided with a clamping block 23, 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 hole 381 corresponding to the position of the clamping block 23, the limiting rib 38 and the rotating shaft 31 form a counterbore 32, the sealing ring 2 is arranged in the counterbore 32, 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 hole 381.

[0043] As Figure 7 , Figure 8 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 clamped 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 clamping block 23 is equal to the thickness of the sealing ring 2, and the depth of the clamping hole 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 abutment with the first workbench 12.

[0044] As Figure 8 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 the edge of the first outer annular wall 11 of the upper shell 1 extends an annular positioning block 17; when the lower shell 3 is engaged with the upper shell 1, the annular positioning block 17 is clamped in the annular pressing groove 37 in a rotatable manner.

[0045] As Figure 7 shown, the bottom surface of the counterbore 32 and the clamping hole 381 are flush, and the annular pressing groove 37 is arranged in a spaced manner with 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 abutment with the limiting rib 38 in a relative rotation manner.

[0046] Further, the sealing ring 2 is fixed on the upper shell 1, the first conduit 14 is communicated with the liquid guide hole 22, and the second conduit 36 can be communicated with the liquid guide hole 22 by relatively rotating the upper shell 1 and the lower shell 3.

[0047] As shown in the drawings, the upper shell 1 is provided with a first fixing hole structure 19 for fixing the first conduit 14, and the lower shell 3 is provided with a second fixing hole structure 39 for fixing the second conduit 36. Figure 2

[0048] Preferably, as shown in the drawings, the annular groove 310 is further provided in the annular pressure groove 37, and the upper shell 1 can be inclined due to the inclination of the clamping column, at this time, the three annular positioning blocks 17 on the upper shell 1 can be pressed on the annular groove 310 of the lower shell 3 when the upper shell is rotated, thereby playing a balancing role and avoiding the problem of inclination of the upper shell 1 caused by the inclination of the rotating shaft 31. Figure 9

[0049] The embodiment of the present application also provides a micro-flow regulator.

[0050] The micro-flow regulator and the infusion device provided by the embodiment of the present application can make the first conduit 14 and the second conduit 36 communicate by relatively rotating the upper shell 1 and the lower shell 3, and the diameter of the first conduit 14 and the second conduit 36 can be adjusted by the rotating angle of the upper shell 1 and the lower shell 3, so that the micro-flow can be adjusted, the size of the flow can be accurately adjusted, and the position of the upper shell 1 and the lower shell 3 will not be moved, so that the flow of the liquid medicine will not be changed.

[0051] In the above embodiments, the description of each embodiment has its own emphasis, and the part not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0052] The micro-flow regulator and the infusion device provided by the embodiment of the present application are described in detail, and the principle and implementation mode of the present application are described by applying specific examples; the above embodiment is only used to help understand the technical scheme and the core idea of the present application; the person skilled in the art should understand that the technical scheme recorded in the above embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the present application.​​

Claims

1. A micro flow regulator, characterized by, The upper shell and the lower shell are connected by mutual snap-fit rotation; The central axis of the upper shell is provided with a rotation groove, and the groove bottom 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 snap-fit 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 arranged in the upper shell along the central axis direction, and a second conduit is arranged in the lower shell along the central axis direction; by relatively rotating the upper shell and the lower shell, the first conduit and the second conduit can be butt-jointed and conducted; The sealing ring is fixed on the lower shell, the second conduit is correspondingly conducted with the liquid guide hole, and by relatively rotating the upper shell and the lower shell, the first conduit and the liquid guide hole can be butt-jointed and conducted; or the sealing ring is fixed on the upper shell, the first conduit is correspondingly conducted with the liquid guide hole, and by relatively rotating the upper shell and the lower shell, the second conduit and the liquid guide hole can be butt-jointed and conducted; When the sealing ring is fixed on the lower shell, the edge of the sealing ring is provided with a clamping block, the lower shell is provided with a limiting rib around the rotating shaft, the limiting rib is provided with a clamping hole corresponding to the position of the clamping block, and the limiting rib and the rotating shaft form a counterbore, the sealing ring is arranged in the counterbore, the outer edge of the sealing ring is clamped with the inner side of the limiting rib, and the clamping block is clamped in the clamping hole; The edge of the rotating shaft is provided with a second workbench, the center of the sealing ring is provided with a through hole, the through hole of the sealing ring is clamped with the second workbench, the depth of the counterbore 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 hole is equal to the thickness of the sealing ring; The lower shell is provided with an annular pressing groove around the rotating shaft between the outer side of the limiting rib and the second outer annular wall of the lower shell, and the edge of the first outer annular wall of the upper shell extends an annular positioning block; when the lower shell is snap-fit with the upper shell, the annular positioning block is rotatably clamped in the annular pressing groove; an annular groove is further arranged in the annular pressing groove, and three annular positioning blocks on the upper shell press on the annular groove of the lower shell when the upper shell rotates; The bottom surface of the counterbore and the clamping hole is flush, the annular pressing groove and the limiting rib are arranged in a spaced manner, the upper shell is provided with a limiting boss on the inner side of the annular positioning block, and the limiting boss abuts against the limiting rib in relative rotation. The upper shell is provided with a first fixing hole structure for fixing the first conduit, and the lower shell is provided with a second fixing hole structure for fixing the second conduit.

2. The micro-flow regulator of claim 1, wherein, The micro-flow regulator comprises the micro-flow regulator of claim 1 or 2.

3. An infusion device, characterized by The micro-flow regulator comprises the micro-flow regulator of claim 1 or 2.

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