Infusion flow regulator and infusion device

Abstract

The present application relates to a kind of infusion flow regulator and infusion device, infusion flow regulator includes inner cylinder, knob disc and dial, inner cylinder has a containing cavity, inner cylinder has the outer surface and inner surface being oppositely arranged along the thickness direction, first through-hole and second through-hole are provided on the inner cylinder and pass through the outer surface and inner surface;Knob disc includes knob part and the first connecting part of connecting knob part, first connecting part is contained in containing cavity, first connecting part has a third through-hole;Dial includes dial body and the second connecting part of connecting dial body, the end of second connecting part away from dial body penetrates third through-hole, and is connected with shell;The end of first connecting part away from knob part is provided with convex part, convex part has the height of protruding first connecting part, the height of convex part gradually increases or decreases.The present application can be used for accurate microinfusion by changing the cross-sectional area of flow path formed by convex part and the first through-hole.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a transfusion flow regulator and a transfusion device. BACKGROUND

[0002] The flow regulator used in common transfusion devices is usually a roller clamp type transfusion flow regulator, and its operating part is in the shape of a roller. In this type of transfusion flow regulator, a connecting tube is penetrated in the open groove from top to bottom, and a roller for extruding the connecting tube is arranged in the long groove, and the roller can move up and down in the long groove. The depth of the groove gradually decreases from top to bottom, so that the extrusion force on the connecting tube is greater when the roller moves downward, that is, the cross-sectional area inside the connecting tube is controlled by the roller which gradually approaches and presses the connecting tube, so as to adjust the flow size. However, the roller clamp type transfusion flow regulator needs to measure the flow while looking at the drip chamber every time the roller-shaped operating part is moved, which is complicated to operate. Moreover, this type of regulator does not have a flow scale, so it cannot accurately adjust the flow size, and thus cannot adjust the micro flow, and the accuracy is low.

[0003] Therefore, it is urgent to provide an innovative transfusion flow regulator to overcome the above technical defects existing in the prior art. SUMMARY

[0004] To this end, the technical problem to be solved by the present application is to overcome the technical defects existing in the prior art, and to provide a transfusion flow regulator and a transfusion device, which can adjust the flow by changing the cross-sectional area of the flow path formed by the convex part and the first through hole, and can be used for precise micro-transfusion by cooperating with the scale disc.

[0005] To solve the above technical problems, the present application provides a transfusion flow regulator, comprising:

[0006] An inner cylinder, one end of which is open, has a containing cavity, and has an outer surface and an inner surface arranged opposite in the thickness direction, and the inner cylinder is provided with a first through hole and a second through hole penetrating the outer surface and the inner surface;

[0007] A knob disc, which comprises a knob part and a first connecting part connecting the knob part, the first connecting part is contained in the containing cavity, and the first connecting part has a third through hole;

[0008] A scale disc, which comprises a scale disc body and a second connecting part connecting the scale disc body, one end of the second connecting part away from the scale disc body penetrates the third through hole and is connected with the shell;

[0009] The first connecting part is provided with a convex part at one end away from the knob part, the convex part has a height protruding from the first connecting part, the height of the convex part gradually increases or decreases along the radial direction of the first connecting part, the convex part rotates around the center of the first connecting part, the movement stroke of the convex part includes a first position and a second position, when the convex part is at the first position, the cross-sectional area of the flow path formed by the convex part and the first through hole is 0, and during the movement of the convex part from the first position to the second position, the cross-sectional area of the flow path formed by the convex part and the first through hole gradually increases.

[0010] In an embodiment of the present application, a first flow guide pipe and a second flow guide pipe are further included, the first flow guide pipe communicates with the first through hole, and the second flow guide pipe communicates with the second through hole.

[0011] In an embodiment of the present application, one side of the knob part away from the first connecting part is provided with a groove for accommodating the dial body, and a gap is reserved between one side of the dial body facing the groove and the groove.

[0012] In an embodiment of the present application, one side of the dial body away from the groove is provided with a scale value.

[0013] In an embodiment of the present application, the edge of one side of the knob part away from the shell is provided with an indication arrow for indicating the scale value.

[0014] In an embodiment of the present application, a first shell and a second shell are further included, the first shell is sleeved on the inner cylinder, and the second shell is sleeved on the first shell.

[0015] In an embodiment of the present application, the knob part includes a first limiting part, the first limiting part is formed in the edge part of the knob part, and the inner wall of the first limiting part is connected to the outer wall of the second shell.

[0016] In an embodiment of the present application, the knob part includes a second limiting part, the second limiting part is respectively formed in the center part of the knob part, and the outer wall of the second limiting part is connected to the inner wall of the first shell.

[0017] In an embodiment of the present application, a handle is further included, the handle is connected to the second shell, and the handle is a profiled structure.

[0018] In addition, the present application further provides a transfusion device including the transfusion flow regulator.

[0019] The above technical solution of the present application has the following advantages compared with the prior art:

[0020] 1. The present application adjusts the flow by changing the cross-sectional area of the flow path formed by the convex part and the first through hole, and has a reasonable structure, can perform micro-adjustment, and is accurate and convenient to adjust, and can be applied to precise micro-infusion by cooperating with the scale dial.

[0021] 2. The present application simplifies the structure of the entire regulator, reduces the complexity of manufacturing the regulator mold, can perform precise machining without error, and thus can ensure the accuracy of the flow adjustment of the assembled product. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to specific embodiments of the present application and in conjunction with the drawings.

[0023] Figure 1 is a structural schematic diagram of an infusion flow regulator according to an embodiment of the present application.

[0024] Figure 2 is a top view of Figure 1

[0025] Figure 3 is a sectional view of A-A in Figure 2

[0026] Figure 4 is a partial enlarged view of B in Figure 3

[0027] Figure 5 is a derivation schematic diagram of the liquid flow cross section of the present application.

[0028] DESCRIPTION OF DRAWINGS1. inner cylinder; 11, first through hole; 12, second through hole; 21, knob part; 211, groove; 212, indication arrow; 213, first limiting part; 214, second limiting part; 22, first connecting part; 221, convex part; 222, third through hole; 31, scale dial body; 311, scale value; 32, second connecting part; 4, first flow guide pipe; 5, second flow guide pipe; 6, first outer shell; 7, second outer shell; 8, handle. DETAILED DESCRIPTION

[0029] The present application will be further described below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the present application and implement it, but the embodiments are not limiting to the present application.

[0030] Please refer to Figures 1 to 4 ​​As shown, the embodiment of the present application provides a kind of infusion flow regulator, including inner tube 1, knob disc and dial, inner tube 1 one end opening, the inner tube 1 has a containing cavity, the inner tube 1 has the outer surface and inner surface oppositely arranged along the thickness direction, the first through hole 11 and the second through hole 12 of the outer surface and the inner surface of the inner tube 1 are provided with;Knob disc includes knob part 21 and the first connecting portion 22 connected with the knob part 21, the first connecting portion 22 is contained in the containing cavity, the first connecting portion 22 has a third through hole 222;Dial includes dial body 31 and the second connecting portion 32 connected with the dial body 31, the second connecting portion 32 one end away from the dial body 31 penetrates the third through hole 222, and is connected with the shell.

[0031] Wherein, the first connecting portion 22 one end away from the knob part 21 is provided with convex part 221, the convex part 221 has the height of protruding the first connecting portion 22, along the radial direction of the first connecting portion 22, the height of the convex part 221 gradually increases or decreases, with the center of the first connecting portion 22 as the shaft, the convex part 221 makes rotational movement, the movement stroke of the convex part 221 includes first position and second position, when the first position, the cross-sectional area of flow path formed by the convex part 221 and the first through hole 11 is 0, and in the process that the convex part 221 moves from the first position to the second position, the cross-sectional area of flow path formed by the convex part 221 and the first through hole 11 gradually increases.

[0032] The present application adjusts flow by changing the cross-sectional area of flow path formed by the convex part 221 and the first through hole 11, which has reasonable structure and can adjust micro flow, and is accurate and convenient.

[0033] The embodiment of the present application provides a kind of infusion flow regulator further comprising first flow guide pipe 4 and second flow guide pipe 5, the first flow guide pipe 4 is communicated with the first through hole 11, and the second flow guide pipe 5 is communicated with the second through hole 12.In actual use, first flow guide pipe 4 is liquid inlet pipe, and second flow guide pipe 5 is liquid outlet pipe, injection liquid needs to flow into second flow guide pipe 5 from first flow guide pipe 4, at this time, the flow of injection liquid from first flow guide pipe 4 to second flow guide pipe 5 can be adjusted to control the flow of infusion.

[0034] When rotating knob part 21 in one direction, first connecting portion 22 can move in the containing cavity of inner tube 1 along first direction at this time, when rotating knob part 21 in reverse direction, first connecting portion 22 moves in the containing cavity of inner tube 1 along reverse direction, so as to realize the movement of first connecting portion 22 in the containing cavity of inner tube 1.

[0035] When the convex portion 221 rotates about the center of the first connecting portion 22, the cross-sectional area of the flow path formed by the convex portion 221 and the first through hole 11 changes, and the movement stroke of the convex portion 221 includes a first position and a second position. At the first position, the cross-sectional area of the flow path formed by the convex portion 221 and the first through hole 11 is 0, and during the movement of the convex portion 221 from the first position to the second position, the cross-sectional area of the flow path formed by the convex portion 221 and the first through hole 11 gradually increases. Specifically, when the cross-sectional area of the flow path formed by the convex portion 221 and the first through hole 11 gradually increases, the flow rate of the first flow guide pipe 4 flowing into the second flow guide pipe 5 gradually increases. Conversely, when the cross-sectional area of the flow path formed by the convex portion 221 and the first through hole 11 gradually decreases, the flow rate of the first flow guide pipe 4 flowing into the second flow guide pipe 5 gradually decreases. That is, the present application adjusts the flow rate by changing the cross-sectional area of the flow path formed by the convex portion 221 and the first through hole 11, and has a reasonable structure, can adjust the micro flow rate, and is accurate and convenient to adjust.

[0036] The knob portion 21 is provided with a groove 211 on the side away from the first connecting portion 22 for accommodating the dial body 31, and a gap is reserved between the side of the dial body 31 facing the groove 211 and the groove 211, which is used to avoid the movement of the first connecting portion 22.

[0037] The side of the dial body 31 away from the groove 211 is provided with a scale value 311, and the edge of the side of the knob portion 21 away from the inner cylinder 1 is provided with an indication arrow 212 for indicating the scale value 311. In use, the dial is not moved, and the flow rate is adjusted by rotating the knob portion 21. That is, the scale value 311 does not change, and the flow rate of the injection liquid is adjusted by the indication arrow 212 indicating the scale value 311. The present embodiment can be used for precise micro infusion. The scale of the product matches the cross section of the liquid flow, and the difference in the ball formed by one ball gradually eating the other ball in the principle of solar eclipse is the cross section of the liquid flow. Please refer to Figure 5 As shown in the figure, it is known that a and b are two balls with radii r and R (R>r), respectively, and the speed v of ball a moves towards ball b.

[0038] When the time is t0, find the intersection of a and b. When the time is t1, find the remaining area of b after the difference product.

[0039] Solution: The distance between the centers is OO′=R+r-v(t1-t0)

[0040] The total area of b is A O =πR 2

[0041] The expression of the intersection area is:

[0042] S 相交 = S 扇CO′D + S 扇COD - S ΔCO′D - S ΔcOD = S 扇CO′D + S 扇cOD - S CO′DO

[0043] = S 扇CO′D + S 扇COD - S ΔOO′D - S ΔOO′C = S 扇CO′D + S 扇COD - 2S ΔOO′D

[0044] (1) Calculate the area of the sector CO'D in the b sphere:

[0045]

[0046] (2) Calculate the area of the sector COD in the a sphere:

[0047]

[0048] (3) Calculate the area of triangle OO'D:

[0049] where the angle between O'O and O'D is Then in ΔOO'D,

[0050]

[0051] The angle α is:

[0052]

[0053] The area is:

[0054]

[0055] (4) The area of intersection is:

[0056]

[0057] (5) The remaining area of the b sphere:

[0058]

[0059] This embodiment is very accurate from 1 milliliter to 300 milliliters, and can overcome the problems of poor weather resistance and large small dose error caused by using silica gel deformation to control flow in the current market.

[0060] As preferred, the gap of the scale value 311 on the scale disc body 31 is wide, which is beneficial to the adjustment of the flow accuracy and convenient for the user to accurately adjust the flow.

[0061] Further, the scale value 311 on the scale disc body 31 is provided with a click reminder and positioning function every time the integer common dose such as 5ml, 10ml, 20ml, 30ml, etc. is set, which plays a reminding function when the scale is adjusted and does not cause the scale disc to change and move due to external interference.

[0062] The infusion flow regulator provided by the embodiment of the present application further comprises a first shell 6 and a second shell 7, the first shell 6 is sleeved on the inner cylinder 1, and the second shell 7 is sleeved on the first shell 6; the knob part 21 comprises a first limiting part 213 and a second limiting part 214, the first limiting part 213 and the second limiting part 214 are respectively formed on the edge part and the center part of the knob part 21, wherein the inner wall of the first limiting part 213 is connected with the outer wall of the second shell 7, and the outer wall of the second limiting part 214 is connected with the inner wall of the first shell 6, so that the rotation of the knob part 21 can be better limited by the first shell 6 and the second shell 7.

[0063] The infusion flow regulator provided by the embodiment of the present application further comprises a handle 8, the handle 8 is connected with the second shell 7, and the handle 8 is a profiled structure, that is, the handle 8 is a structure similar to a human hand, which is convenient to operate; and the design is convenient for one-handed operation and can meet the needs of different users.

[0064] The present application simplifies the structure of the whole regulator, reduces the complexity of manufacturing the regulator mold, and can be precisely machined without error, so as to ensure the accuracy of the flow regulation of the assembled product.

[0065] Corresponding to the infusion flow regulator provided by the above embodiment, the embodiment of the present application further provides an infusion device comprising the infusion flow regulator as described above, and the infusion device provided by the embodiment has all the beneficial effects of the infusion flow regulator of the above embodiment.

[0066] Obviously, the above embodiments are merely examples for clearly illustrating and are not intended to limit the implementation modes. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the implementation modes are not required or can not be exhausted. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. An infusion flow regulator characterized by: The application relates to a kind of infusion flow regulators, comprising: an inner cylinder with one end opening, the inner cylinder has a receiving cavity, the inner cylinder has outer surface and inner surface oppositely arranged along the thickness direction, the inner cylinder is provided with first through hole and second through hole penetrating the outer surface and the inner surface; a knob disc comprising knob part and first connecting part connected with the knob part, the first connecting part is accommodated in the receiving cavity, the first connecting part has a third through hole; a dial disc comprising dial disc body and second connecting part connected with the dial disc body, the second connecting part penetrates the third through hole at one end away from the dial disc body, and is connected with the shell, the shell comprises first shell and second shell, the first shell is sleeved on the inner cylinder, and the second shell is sleeved on the first shell; wherein, the first connecting part is provided with a convex part at one end away from the knob part, the convex part has a height protruding from the first connecting part, the height of the convex part gradually increases or decreases along the radial direction of the first connecting part, the convex part rotates around the center of the first connecting part, the movement stroke of the convex part comprises first position and second position, when the convex part is at the first position, the cross-sectional area of flow path formed by the convex part and the first through hole is 0, and during the movement of the convex part from the first position to the second position, the cross-sectional area of flow path formed by the convex part and the first through hole gradually increases; further comprising first flow guide pipe and second flow guide pipe, the first flow guide pipe communicates with the first through hole, and the second flow guide pipe communicates with the second through hole; one side of the knob part away from the first connecting part is provided with a groove for accommodating the dial disc body, and a gap is reserved between one side of the dial disc body facing the groove and the groove; the knob part comprises first limiting part, the first limiting part is formed in the edge part of the knob part, wherein the inner wall of the first limiting part connects the outer wall of the second shell; the knob part comprises second limiting part, the second limiting part is respectively formed in the center part of the knob part, wherein the outer wall of the second limiting part connects the inner wall of the first shell.

2. A fluid flow regulator according to claim 1, wherein: one side of the dial disc body away from the groove is provided with scale value.

3. A fluid flow regulator according to claim 2, wherein: the edge of one side of the knob part away from the shell is provided with an indicating arrow for indicating scale value.

4. A fluid flow regulator according to claim 3, wherein: further comprising handle, the handle is connected with the second shell, and the handle is a profiled structure.

5. An infusion device, characterized by: the application further discloses a kind of infusion flow regulators comprising any one of claims 1-4.

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