Transfusion connecting piece

Abstract

The utility model relates to the field of medical instruments, in particular to an infusion connecting piece which comprises a liquid outlet connecting unit, an infusion tube, an outer shell, a liquid inlet connecting unit, a flow control unit and a metering unit, the outer shell comprises an upper shell and a lower shell, and the flow control unit comprises a clamping piece, a spring connected with the clamping piece, a clamping plate for controlling the clamping piece to move and a pressing piece. The clamping plate is connected with the upper shell; the lower shell is provided with a spring switch for controlling the spring state; in addition, the clamping piece interacts with the infusion tube to change the circulation gap of the infusion tube, and flowing fluid enters the metering unit after passing through the flow control unit.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a transfusion connecting piece. BACKGROUND

[0002] It is known that injection fluid can be injected into human blood vessels or muscle tissue through a connecting piece. When infusing anesthetics, swelling liquid, saline, etc., a peristaltic pump is often used to control the flow rate and the amount of infusion liquid. Such infusion method not only has high cost, but also is inconvenient to operate. In addition, the common sliding flow control device does not have a flow counting function and cannot provide the actual injection milliliter number for the operator.

[0003] Patent CN202322786473.6 discloses a regulator capable of controlling the flow rate of a liquid medicine of a transfusion device, comprising: a regulating bin, a plurality of flow guide channels for passing target liquid are formed in the regulating bin, wherein a plurality of flow interruption grooves are arranged on the flow guide channels; a regulating rubber pad is arranged in the regulating bin, wherein a plurality of elastic flow interruption convex points are arranged on the regulating rubber pad; a flow rate regulator is rotatably arranged on the regulating bin, wherein a plurality of convex point pressing plates are arranged on the lower part of the flow rate regulator, and the convex point pressing plates can press the elastic flow interruption convex points into the corresponding flow interruption grooves. The technical defects of this scheme are: first, the regulating bin combines multiple flow rates by controlling the on-off of different flow channels, which requires the design of multiple flow channels, resulting in an increase in the width of the regulator, which is very inconvenient to hold with one hand; second, the regulator cannot provide the specific flow rate of the liquid medicine, cannot provide the actual injection amount of the liquid medicine for the operator, and the prompt is not obvious.

[0004] In summary, the existing technology has the following problems that need to be solved urgently: how to ensure that the operator can operate the transfusion connecting piece with one hand, adjust the flow rate of the injection liquid, and prompt the operator of the actual injection amount of the liquid medicine. UTILITY MODEL CONTENT

[0005] The present application is proposed in view of the above and other more ideas.

[0006] One of the purposes of the present application is to overcome the deficiencies of the prior art, and to provide a transfusion connecting piece for the problem that the prior art transfusion connecting piece cannot simultaneously ensure one-handed operation, injection liquid flow adjustment, and injection amount display.

[0007] The purpose of the utility model is realized through the following scheme:

[0008] An infusion connector includes: an outlet connection unit, an infusion tube, an outer shell, an inlet connection unit, a flow control unit, and a metering unit. The outer shell includes an upper shell and a lower shell. The flow control unit includes a clamping member, a spring connected to the clamping member, a clamping plate for controlling the movement of the clamping member, and a pressing member. The clamping plate is connected to the upper shell. The lower shell is provided with a spring switch for controlling the state of the spring. Furthermore, the clamping member interacts with the infusion tube to change the flow gap of the infusion tube, and the fluid flowing through it enters the metering unit after passing through the flow control unit.

[0009] The objective of this utility model can also be further achieved through the following technical solutions:

[0010] In one embodiment, when the spring switch is closed, the spring is in its natural state, and the clamping member does not compress the infusion tube.

[0011] In one embodiment, when the spring switch is turned on, it pulls the spring downwards, and the clamping member clamps the infusion tube.

[0012] In one embodiment, when the spring switch is opened, the spring moves towards both ends compared to its natural state.

[0013] In one embodiment, the lower shell includes a limiting slot, and when the spring switch is opened, the clamping member is engaged in the limiting slot; furthermore, grooves are provided on both sides of the clamping member, and the grooves are engaged with the limiting slot.

[0014] In one embodiment, a linkage shaft is provided at the middle position of the clamping plate, the linkage shaft is connected to the upper shell, and the clamping plate rotates around the linkage shaft.

[0015] In one embodiment, the clamping plate employs a seesaw principle.

[0016] In one embodiment, the clamp includes a first end and a second end, the first end being connected to the clamping member and the second end being connected to the pressing member; and, when the pressing member is pressed, the second end moves downward and the first end moves upward, and the clamping member gradually releases the infusion tube.

[0017] In one embodiment, the more the pressing member moves downward, the more the clamping member rises, thereby changing the size of the infusion tube channel and controlling the flow rate of the fluid.

[0018] In one embodiment, the flow control unit further includes a baffle for fixing the press member, which slides above the press member when the infusion connection is not open.

[0019] In one embodiment, the flow control unit is disposed near the metering unit; the metering unit includes a transmission part and a counting part disposed above the transmission part.

[0020] In one embodiment, the transmission unit includes a housing, an inner cavity, a power core, a transmission lever, a transmission rod, an inner cavity cover plate, and a sealing cover; and, the transmission unit is provided with an inlet and an outlet at both ends, the fluid enters the inlet, drives the power core to move through the inner cavity, thereby driving the transmission lever to rotate, the transmission rod to rotate, and the transmission rod is connected to the counting unit.

[0021] In one embodiment, the power core includes a spindle, and an inner cavity plate is provided inside the inner cavity. Under the action of fluid, the power core actuates the transmission paddle, and the spindle performs a circular motion. Furthermore, the fluid flows out from the upper cover plate of the inner cavity and is injected through the outlet.

[0022] In one embodiment, the imported component is located below the exported component.

[0023] In one embodiment, the counting unit includes a dial box, a box cover, a dial wheel, a dial wheel shaft, a number wheel, a turbine, and a number wheel shaft. The turbine is connected to the transmission rod, and under the drive of the transmission rod, the turbine rotates, thereby driving the number wheel to rotate.

[0024] In one embodiment, the numerical wheel is set with ten numbers from 0 to 9. When the numerical wheel rotates to the number 9, the boss on the left side of the wheel will contact the dial wheel, causing the dial wheel to rotate, which in turn causes the previous (left) numerical wheel to advance by 1 digit unit, and so on.

[0025] In one embodiment, the inlet connection unit includes an inner conical connector, the outlet connection unit includes an outer conical connector and a locking cap, the outlet connection unit is connected to the injection needle, and the fluid passes through the inlet connection unit, the flow control unit, the metering unit, and the outlet connection unit to reach the injection needle.

[0026] In one embodiment, the inner conical connector is connected to an infusion connection line.

[0027] In one embodiment, the liquid outlet connection unit is an external conical Luer connector, which can be connected to injection needles of different sizes, and the liquid is introduced into human blood vessels or muscle tissue through the infusion connector.

[0028] Compared with the prior art, the advantages of the technical solution of this application include at least the following:

[0029] Existing infusion connectors, in order to control the infusion flow rate, are designed with multiple flow channels. This results in an overly wide overall component, which not only occupies space but is also difficult to handle. Furthermore, it does not provide a clear indication of the actual fluid injection volume. This application solves these problems. First, the infusion connector of this application has only one infusion tube, and the outer shell is elongated, making it suitable for one-handed handling and conforming to ergonomics. Second, the flow control unit only requires pressing the press button, which can be pressed with the thumb when handling the infusion connector, allowing for complete one-handed operation. Third, a metering unit is designed at the far end of the flow control unit. The metering unit includes a transmission part and a counting part. The fluid can smoothly pass through the transmission part, which assists the counting part in obtaining the fluid flow rate and indicating the liquid flow rate input by the operator. The structure is ingeniously designed, multifunctional, easy to operate, and has great potential for widespread application.

[0030] Unlike existing technologies, this application designs a spring switch. When the spring switch is closed, the spring is in a natural state. At this time, the clamping element does not exert force on the infusion tube. Since the infusion tube is a flexible tube, this design can improve the lifespan of both the spring and the flexible tube, prevent the spring from being in a tensile state for a long time, and prevent the flexible tube from failing to spring back up due to prolonged closure.

[0031] Unlike existing technologies, the clamp includes a first end and a second end. The first end is subjected to the action of a spring, and the second end is subjected to the pressing force, which ensures that the clamp is balanced when it rotates, allowing the operator to keep the pressing operation still and ensuring high stability.

[0032] Unlike existing technologies, the metering unit of this application includes a transmission part and a counting part disposed above the transmission part. The transmission part includes a transmission rod, and the rotation of the transmission rod drives the counting part to achieve mechanical movement, causing the value wheel of the counting part to rotate. The value on the value wheel indicates the operator's fluid input flow rate.

[0033] The embodiments of this application can achieve other advantageous technical effects not listed one by one, which may be partially described below; and these other technical effects can be expected and understood by those skilled in the art after reading this application. Attached Figure Description

[0034] The above-described features and advantages of these embodiments, as well as other features and advantages, and the ways in which they are implemented, will become more apparent from the following description in conjunction with the accompanying drawings; and embodiments of this application can be better understood, in which:

[0035] Figure 1 This is a schematic diagram of the overall structure of the infusion connector of this utility model.

[0036] Figure 2 This is a schematic diagram of the flow control unit of this utility model.

[0037] Figure 3 This is a schematic diagram of the internal structure of the transmission part of this utility model.

[0038] Figure 4 This is a schematic diagram of the inner cavity cover plate of this utility model.

[0039] Figure 5 This is a schematic diagram of the power core of this utility model.

[0040] Figure 6 This is a schematic diagram of the inner cavity of this utility model.

[0041] Figure 7 This is a schematic diagram of the counting unit of this utility model.

[0042] The features represented by the numbers in the attached diagram are as follows:

[0043] 1-Discharge connection unit, 2-Infusion tube, 3-Outer shell, 31-Upper shell, 32-Lower shell, 321-Restriction slot, 4-Inlet connection unit, 5-Flow control unit, 51-Clamping element, 511-Groove, 52-Spring, 53-Clamping plate, 531-First end, 532-Second end, 54-Pressing element, 55-Linkage shaft, 56-Baffle, 6-Spring switch, 7-Metering unit, 8-Transmission 81-Outer shell, 82-Inner cavity, 821-Inner cavity plate, 83-Power core, 831-Mandrel, 832-Eccentric groove, 84-Transmission lever, 85-Transmission rod, 86-Inner cavity upper cover plate, 87-Sealing cover, 88-Inlet component, 89-Outlet component, 9-Counting section, 91-Case, 92-Case cover, 93-Actuating wheel, 94-Actuating wheel shaft, 95-Number wheel, 96-Turbine, 97-Number wheel shaft. Detailed Implementation

[0044] The details of one or more embodiments of this application will be set forth in the following description of the accompanying drawings and specific embodiments. Other features, objects, and advantages of this application will become clear from these descriptions, drawings, and claims.

[0045] It should be understood that the phrases and terms used in this document are for descriptive purposes and should not be considered restrictive. The use of “including,” “contains,” or “has,” and their variations, in this document is intended to include, in an open-ended manner, the items listed thereafter, their equivalents, and any additional items.

[0046] The present application will now be described in more detail with reference to various embodiments and examples of several aspects thereof.

[0047] In this application, the terms "proximal" or "proximal" refer to the end or side closer to the surgeon, and "distal" or "distal" refer to the end or side farther from the surgeon. Example 1

[0048] like Figures 1-3 As shown, when used for injecting medical liquids, the present invention illustrates an infusion connector according to an embodiment of this application, including: an outlet connection unit 1, an infusion tube 2, an outer shell 3, an inlet connection unit 4, a flow control unit 5, and a metering unit 7. The outer shell 3 includes an upper shell 31 and a lower shell 32. The flow control unit 5 includes a clamping member 51, a spring 52 connected to the clamping member 51, a clamping plate 53 for controlling the movement of the clamping member 51, and a pressing member 54. The clamping plate 54 is connected to the upper shell 31. The lower shell 32 is provided with a spring switch 6 for controlling the state of the spring 53. Furthermore, the clamping member 51 interacts with the infusion tube 2 to change the flow gap of the infusion tube 2, and the fluid flowing through it enters the metering unit 7 after passing through the flow control unit 5.

[0049] The objective of this utility model can also be further achieved through the following technical solutions:

[0050] In this embodiment, when the spring switch 6 is closed, the spring 52 is in a natural state, and the clamping member 51 does not squeeze the infusion tube 2.

[0051] In this first embodiment, when the spring switch 6 is opened, it pulls the spring 52 downwards, and the clamping member 51 clamps the infusion tube 2. Figure 2 As shown.

[0052] In this first embodiment, when the spring switch 6 is opened, the spring 52 moves towards both ends compared to its natural state.

[0053] In this first embodiment, the lower shell 32 includes a limiting slot 321. When the spring switch 6 is opened, the clamping member 51 is locked in the limiting slot 321. Furthermore, the clamping member 51 has grooves 511 on both sides, and the grooves 511 are connected to the limiting slot 321.

[0054] In this first embodiment, a linkage shaft 55 is provided at the middle position of the clamping plate 53. The linkage shaft 55 is connected to the upper shell 31, and the clamping plate 53 rotates around the linkage shaft 55.

[0055] In this first embodiment, the clamping plate 53 includes a first end 531 and a second end 532, as follows: Figure 2 As shown, the first end 532 is connected to the clamping member 51, and the second end 532 is connected to the pressing member 54; and when the pressing member 54 is pressed, the second end 532 moves downward and the first end 531 moves upward, and the clamping member 51 gradually loosens the infusion tube 2.

[0056] In this first embodiment, the pressing member 54 moves downwards, and the clamping member 51 rises upwards, thereby changing the size of the infusion tube 2 channel and controlling the flow rate of the fluid.

[0057] In this first embodiment, the flow control unit 5 further includes a baffle 56 for fixing the pressing member 54. When the infusion connector is not opened, the baffle 56 slides above the pressing member 54.

[0058] In this first embodiment, the metering unit 7 adopts the counting principle of a water meter.

[0059] In this first embodiment, the flow control unit 5 is disposed near the metering unit 7; the metering unit 7 includes a transmission part 8 and a counting part 9 disposed above the transmission part 8.

[0060] In this first embodiment, the transmission unit 8 includes a housing 81, an inner cavity 82, a power core 83, a transmission lever 84, a transmission rod 85, an inner cavity upper cover plate 86, and a sealing cover 87, as shown below. Figures 3-6 As shown; and, the transmission part 8 is provided with an inlet part 88 and an outlet part 89 at both ends. Fluid enters the inlet part 89, drives the power core 82 to move through the inner cavity 82, and then drives the transmission dial 84 to rotate. The transmission rod 85 rotates and is connected to the counting part 9.

[0061] In this first embodiment, the power core 83 includes a spindle 831, and an inner cavity plate 821 is provided in the inner cavity 82. Under the action of fluid, the power core 83 moves the transmission lever 84, and the spindle 831 makes a circular motion; and the fluid flows out from the upper cover plate 86 of the inner cavity and is injected through the outlet 88.

[0062] In this first embodiment, the power core 83 also includes an eccentric groove 832. Under the action of fluid, the eccentric groove 832 reciprocates eccentrically along the inner cavity plate 821, the spindle 831 moves the transmission lever 84, and the transmission rod 85 performs circumferential motion.

[0063] In this first embodiment, the inlet component 88 and the outlet component 89 are on the same horizontal line.

[0064] In this first embodiment, as Figure 7 As shown, the counting unit 9 includes a dial box 91, a box cover 92, a dial wheel 93, a dial wheel shaft 94, a value wheel 95, a turbine 96, and a value wheel shaft 97. The turbine 96 is connected to the transmission rod 85. Driven by the transmission rod 85, the turbine 96 rotates, thereby driving the value wheel 95 to rotate.

[0065] In this first embodiment, the numerical wheel 95 is set with ten numbers from 0 to 9. When the numerical wheel 95 rotates to the number 9, the boss on the left side of the wheel will contact the dial wheel, causing the dial wheel 93 to rotate, which in turn causes the previous (left) numerical wheel to advance by 1 digit unit, and so on.

[0066] In this embodiment, the inlet connection unit 4 includes an inner conical connector, and the outlet connection unit 1 is connected to the injection needle. The fluid passes through the inlet connection unit 4, the flow control unit 5, the metering unit 7, and the outlet connection unit 1 to reach the injection needle.

[0067] In this embodiment, the liquid outlet connection unit 1 is an external conical Luer connector, which can be connected to injection needles of different specifications. The liquid is introduced into human blood vessels or muscle tissue through the infusion connector.

[0068] The foregoing description of several embodiments of this application has been provided for illustrative purposes. This foregoing description is not intended to be exhaustive, nor is it intended to limit the application to the precise configurations, constructions, and / or steps disclosed; obviously, many modifications and variations can be made in light of the teachings above. The scope of this invention and all its equivalents are intended to be defined by the appended claims.

Claims

1. An infusion connector, characterized in that, include: The system includes a liquid outlet connection unit, a liquid infusion tube, an outer shell, a liquid inlet connection unit, a flow control unit, and a metering unit. The outer shell includes an upper shell and a lower shell. The flow control unit includes a clamping member, a spring connected to the clamping member, a clamping plate for controlling the movement of the clamping member, and a pressing member. The clamping plate is connected to the upper shell. The lower shell is provided with a spring switch for controlling the state of the spring. Furthermore, the clamping member interacts with the infusion tube to change the flow gap of the infusion tube, and the fluid flowing through it enters the metering unit after passing through the flow control unit.

2. The infusion connector according to claim 1, characterized in that, When the spring switch is closed, the spring is in its natural state, and the clamping member does not compress the infusion tube.

3. The infusion connector according to claim 1, characterized in that, When the spring switch is turned on, it pulls the spring downwards, and the clamping member clamps the infusion tube.

4. The infusion connector according to claim 1, characterized in that, The lower shell includes a limiting slot. When the spring switch is opened, the clamping member is locked in the limiting slot. Furthermore, grooves are provided on both sides of the clamping member, and the grooves are engaged with the limiting slot.

5. The infusion connector according to claim 1, characterized in that, A linkage shaft is provided at the middle position of the clamping plate. The linkage shaft is connected to the upper shell, and the clamping plate rotates around the linkage shaft.

6. The infusion connector according to claim 1, characterized in that, The clamp includes a first end and a second end, the first end being connected to the clamping member and the second end being connected to the pressing member; and when the pressing member is pressed, the second end moves downward and the first end moves upward, and the clamping member gradually loosens the infusion tube.

7. The infusion connector according to claim 1, characterized in that, The flow control unit is located near the metering unit; the metering unit includes a transmission part and a counting part located above the transmission part.

8. The infusion connector according to claim 7, characterized in that, The transmission unit includes a housing, an inner cavity, a power core, a transmission lever, a transmission rod, an inner cavity cover plate, and a sealing cover; and the transmission unit is provided with an inlet and an outlet at both ends. Fluid enters the inlet and drives the power core to move through the inner cavity, thereby driving the transmission lever to rotate, and the transmission rod to rotate. The transmission rod is connected to the counting unit.

9. The infusion connector according to claim 8, characterized in that, The power core includes a spindle, and an inner cavity plate is provided inside the inner cavity. Under the action of fluid, the power core actuates the transmission paddle, and the spindle makes a circular motion. Furthermore, the fluid flows out from the upper cover plate of the inner cavity and is injected through the outlet.

10. The infusion connector according to claim 8, characterized in that, The counting unit includes a dial box, a cover, a dial wheel, a dial wheel shaft, a number wheel, a turbine, and a number wheel shaft. The turbine is connected to the transmission rod, and under the drive of the transmission rod, the turbine rotates, thereby driving the number wheel to rotate.

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