Needleless transfusion connecting piece with filter

Abstract

The utility model discloses a needleless infusion connecting piece with a filter, which belongs to the field of infusion devices and comprises a double-filter component, a first connector and a second connector. One end of the third joint is connected with the second joint; and the at least two connecting pipe assemblies are connected with the other end of the third connector, and each connecting pipe assembly comprises a flow stopping clamp. The infusion bag has the advantages that particulate matter and air can be conveniently filtered at the same time, when different infusion bags are replaced, multiple times of insertion and extraction are not needed, and a plurality of infusion bags can be conveniently used at the same time.

Description

Technical Field

[0001] The utility model relates to an infusion device, in particular to a needleless infusion connector with a filter. Background Art

[0002] A needleless infusion connector is a connecting device for connecting an infusion bag and an infusion tube, which has the advantage of good connection performance and is widely used in the infusion field.

[0003] However, the filtering performance of related needleless infusion connectors is poor, and it is difficult to filter particulate matter and air at the same time. Moreover, when replacing different infusion bags, multiple pluggings and unplugging operations are required, and multiple infusion bags cannot be used simultaneously. Summary of the Utility Model

[0004] Purpose of the utility model: The purpose of the utility model is to provide a needleless infusion connector with a filter, which is convenient for filtering particulate matter and air at the same time, and when replacing different infusion bags, multiple pluggings and unplugging operations are not required, and it is also convenient for using multiple infusion bags simultaneously.

[0005] Technical solution: A needleless infusion connector with a filter includes:

[0006] A dual filtration component, with a first joint and a second joint respectively connected to both ends of the dual filtration component;

[0007] A third joint, with one end of the third joint connected to the second joint;

[0008] At least two connecting tube components both connected to the other end of the third joint, and each connecting tube component includes a stop clamp.

[0009] Optionally, each connecting tube component further includes:

[0010] A connecting tube cooperating with the stop clamp, with one end of the connecting tube connected to the third joint;

[0011] A fourth joint connected to the other end of the connecting tube.

[0012] Optionally, the dual filtration component includes:

[0013] A housing, with an accommodation space provided inside the housing;

[0014] A filter membrane connected inside the housing, so that the accommodation space is configured as a first space and a second space respectively located on both sides of the filter membrane;

[0015] Wherein, the first space communicates with the first joint, and the second space communicates with the second joint.

[0016] Optionally, the dual filtration component further includes:

[0017] A plurality of flow guiding plates spaced and connected inside the housing;

[0018] A plurality of flow guiding grooves formed between adjacent flow guiding plates;

[0019] Wherein, the plurality of flow guiding plates and the plurality of flow guiding grooves are both located in the first space.

[0020] Optionally, the double filtration assembly further includes:

[0021] A first through hole provided on one side of the housing, and the first through hole communicates with the first space;

[0022] A second through hole provided on the other side of the housing, and the second through hole communicates with the second space;

[0023] Wherein, the first through hole communicates with the first joint, and the second through hole communicates with the second joint.

[0024] Optionally, along the direction from the second through hole to the first through hole, the cross-sectional dimension of the second space gradually decreases.

[0025] Optionally, the double filtration assembly further includes a plurality of air vent holes provided on the housing, and the plurality of air vent holes communicate with the second space.

[0026] Optionally, the double filtration assembly further includes a breathable and water-blocking membrane connected inside the housing, and the breathable and water-blocking membrane covers the plurality of air vent holes.

[0027] Advantageous effects:

[0028] 1) The double filtration assembly is used to filter particulate matter and air simultaneously;

[0029] 2) The connecting tube assembly is used to connect the infusion bag. Since the number of the connecting tube assemblies is at least two, when it is necessary to use a plurality of infusion bags in sequence, first insert the plurality of infusion bags into the corresponding plurality of connecting tube assemblies at one time, and clamp the stop clips of the connecting tube assemblies that are not to be used temporarily. When it is necessary to use, just loosen the stop clip of the corresponding connecting tube assembly, without multiple pluggings and unpluggs. When it is necessary to use a plurality of infusion bags simultaneously, just insert the plurality of infusion bags into the corresponding plurality of connecting tube assemblies. Description of the drawings

[0030] Figure 1 It is a schematic structural diagram of a needleless infusion connector with a filter according to the present invention;

[0031] Figure 2 It is a schematic structural diagram of the double filtration assembly of the present invention;

[0032] Figure 3 For Figure 2 the cross-sectional view taken along A-A in

[0033] In the figure: 11, the first connector; 12, the second connector; 13, the third connector; 2, the dual filtration assembly; 21, the housing; 211, the first space; 212, the second space; 213, the first through-hole; 214, the second through-hole; 215, the air-permeable hole; 22, the filter membrane; 23, the flow guide plate; 24, the air-permeable and water-blocking membrane; 3, the connecting tube assembly; 31, the stop clamp; 32, the connecting tube; 33, the fourth connector. Detailed implementation mode

[0034] To make the technical solution of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Embodiment 1

[0036] Combined with Figures 1-3 , this embodiment provides a needleless infusion connector with a filter, including: a dual filtration assembly 2, with a first connector 11 and a second connector 12 respectively connected to both ends of the dual filtration assembly 2; a third connector 13, with one end of the third connector 13 connected to the second connector 12; at least two connecting tube assemblies 3 both connected to the other end of the third connector 13, and each connecting tube assembly 3 includes a stop clamp 31.

[0037] Specifically, the dual filtration assembly 2 is used to filter particulate matter and air simultaneously; the first connector 11 is also used to connect to an infusion tube; the second connector 12 is used to connect the dual filtration assembly 2 and the third connector 13; the third connector 13 is used to connect the second connector 12 and the connecting tube assembly 3; the connecting tube assembly 3 is used to connect to an infusion bag. Since the number of connecting tube assemblies 3 is at least two, when multiple infusion bags need to be used sequentially, first insert multiple infusion bags into the multiple connecting tube assemblies 3 at one time and clamp the stop clamps of the connecting tube assemblies 3 that are not in use for the time being. When needed, just loosen the stop clamp of the corresponding connecting tube assembly 3, without the need for multiple pluggings and unpluggs. When multiple infusion bags need to be used simultaneously, just insert the multiple infusion bags into the multiple connecting tube assemblies 3; the first connector 11, the second connector 12, and the third connector 13 are all preferably Luer connectors.

[0038] Furthermore, as Figure 1 , each connecting tube assembly 3 further includes: a connecting tube 32 cooperating with the stop clamp 31, with one end of the connecting tube 32 connected to the third connector 13; a fourth connector 33 connected to the other end of the connecting tube 32.

[0039] Specifically, the connecting tube 32 is used to connect the third joint 13 and the fourth joint 33, and the stop clamp 31 stops the flow by clamping the connecting tube 32; the fourth joint 33 is used to connect the connecting tube 32 and the infusion bag.

[0040] Furthermore, as Figure 3 , the dual filtration assembly 2 includes: a housing 21 with an accommodation space provided therein; a filter membrane 22 connected within the housing 21 such that the accommodation space is configured as a first space 211 and a second space 212 respectively located on both sides of the filter membrane 22; wherein, the first space 211 communicates with the first joint 11, and the second space 212 communicates with the second joint 12.

[0041] Specifically, during use, the liquid medicine flows in from the second space 212, passes through the filter membrane 22, and then flows out from the first space 211; the housing 21 is used to carry the first space 211, the second space 212, etc.; the filter membrane 22 can be a polyethersulfone filter membrane or the like.

[0042] Furthermore, as Figure 3 , the dual filtration assembly 2 further includes: a plurality of flow guide plates 23 spacedly connected within the housing 21; a plurality of flow guide grooves formed between adjacent flow guide plates 23; wherein, the plurality of flow guide plates 23 and the plurality of flow guide grooves are both located in the first space 211.

[0043] Specifically, the plurality of flow guide plates 23 are used to form the plurality of flow guide grooves; the plurality of flow guide grooves are used to guide the liquid medicine, facilitating an increase in the flow stability of the liquid medicine.

[0044] Furthermore, as Figure 3 , the dual filtration assembly 2 further includes: a first through hole 213 provided on one side of the housing 21, the first through hole 213 communicating with the first space 211; a second through hole 214 provided on the other side of the housing 21, the second through hole 214 communicating with the second space 212; wherein, the first through hole 213 communicates with the first joint 11, and the second through hole 214 communicates with the second joint 12.

[0045] Furthermore, as Figure 3 , along the direction from the second through hole 214 to the first through hole 213, the cross-sectional dimension of the second space 212 gradually decreases, which is equivalent to that along the flow direction of the liquid medicine, the cross-sectional dimension of the second space 212 gradually decreases. This not only facilitates the second space 212 to have a certain guiding effect on the liquid medicine, but also facilitates the filtered particles to move away from the second through hole 214, preventing the particles from prematurely clogging the entire filter membrane 22 and ensuring the filtration efficiency.

[0046] Furthermore, as Figures 2-3, the dual filtering component 2 further includes a plurality of ventilation holes 215 provided on the housing 21. The plurality of ventilation holes 215 are all communicated with the second space 212, and the plurality of ventilation holes 215 are all used for ventilation, so as to ensure the air pressure balance inside and outside the dual filtering component 2.

[0047] Furthermore, as Figures 2-3 , the dual filtering component 2 further includes a breathable and water-blocking film 24 connected inside the housing 21. The breathable and water-blocking film 24 covers the plurality of ventilation holes 215. The breathable and water-blocking film 24 is used for ventilation and water blocking to prevent the liquid medicine in the housing 21 from flowing out. The material of the breathable and water-blocking film 24 can be an EPTFE film or a PDFE film, etc.

[0048] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the appended claims.

Claims

1. A needle-free infusion connector with a filter, characterized in that: include: A double filter assembly, wherein two ends of the double filter assembly are respectively connected to a first joint and a second joint; a third connector, one end of which is connected to the second connector; At least two connecting pipe assemblies are connected to the other end of the third joint, and each of the connecting pipe assemblies includes a flow stop clamp.

2. A needle-free infusion connector with a filter according to claim 1, characterized in that: Each of the connecting pipe assemblies further comprises: A connecting pipe matched with the flow-stop clamp, one end of which is connected to the third joint; A fourth joint connected to the other end of the connecting pipe.

3. A needle-free infusion connector with a filter according to claim 1 or 2, characterized in that: The dual filter assembly comprises: A housing, wherein a receiving space is provided in the housing; A filter membrane connected to the housing so that the accommodation space is configured as a first space and a second space located on both sides of the filter membrane respectively; The first space is communicated with the first joint, and the second space is communicated with the second joint.

4. The needle-free infusion connector with a filter according to claim 3, characterized in that: The dual filter assembly also includes: A plurality of guide plates connected at intervals inside the housing; A plurality of guide grooves formed between adjacent guide plates; Wherein, the plurality of guide plates and the plurality of guide grooves are all located in the first space.

5. The needle-free infusion connector with a filter according to claim 3, characterized in that: The dual filter assembly also includes: a first through hole provided at one side of the housing, the first through hole being in communication with the first space; a second through hole provided on the other side of the housing, the second through hole being in communication with the second space; The first through hole is communicated with the first joint, and the second through hole is communicated with the second joint.

6. The needle-free infusion connector with a filter according to claim 5, characterized in that: Along the direction from the second through hole to the first through hole, the cross-sectional size of the second space gradually decreases.

7. The needle-free infusion connector with a filter according to claim 3, characterized in that: The double filter assembly further comprises a plurality of air holes arranged on the shell, and the plurality of air holes are all communicated with the second space.

8. The needle-free infusion connector with a filter according to claim 7, characterized in that: The dual filter assembly further comprises a breathable and water-blocking membrane connected to the shell, and the breathable and water-blocking membrane covers the plurality of breathable holes.

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