Filtering puncture outfit

Abstract

The utility model discloses a filtering puncture outfit which comprises a puncture part, a mounting cover and a female connector, the mounting cover and the female connector are fixedly arranged on the puncture part, a filtering film is arranged between the puncture part and the mounting cover, and a flexible plug and a valve plug which can be matched with a male connector are arranged in an opening and closing flow channel of the female connector. When the puncture part is inserted into a medicine bottle containing medicine liquid and the female connector is not connected with the male connector, the valve plug can seal the opening and closing flow channel under the elastic acting force of the flexible plug to prevent leakage of the medicine liquid, after the female connector is connected with the male connector, the male connector pushes the valve plug to achieve opening of the opening and closing flow channel, at the moment, the medicine can be filtered through the filtering membrane and then discharged, and the medicine liquid is prevented from leaking. The circulation state of the medicine can be adaptively adjusted along with the connection state of the female connector and the male connector in the using process, and the output control flexibility of the medicine in the using process is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of medical supplies technology, and in particular to a filter puncture device. Background Technology

[0002] An infusion set is a device used to deliver intravenous medication to a patient. Currently, an infusion set typically consists of an intravenous needle, a protective cap, an infusion tubing, a medication filter, a flow regulator, a drip chamber, a precision filter, a filter puncture device, and an air filter connected to the inlet tube. During operation, under atmospheric pressure, the liquid in the bottle flows through the thinner infusion tubing into the drip chamber. When the water column pressure in the drip chamber exceeds the venous pressure, the liquid in the bottle flows through the tubing into the vein.

[0003] In most existing filtration puncture devices, the puncture needle part of the puncture device is directly inserted into the medicine bottle to achieve drug discharge and filtration. During the drug dispensing process, the puncture device needs to remain inserted into the medicine bottle and also needs to be connected to the external drug dispensing device. This makes it inconvenient to flexibly open and close the drug dispensing channel, affecting the user experience. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a simple filter puncture device with flexible drug delivery opening and closing control.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0006] This application provides a filter puncture device, including a puncture part and a mounting cover, a female connector, and a filter membrane fixedly connected to the puncture part;

[0007] The puncture section has a drug outlet chamber inside, the mounting cover has a through-hole communicating with the drug outlet chamber, the female connector has an openable and closed flow channel communicating with the through-hole, and the filter membrane is disposed between the puncture section and the mounting cover, and covers the drug outlet chamber and the through-hole.

[0008] The opening and closing flow channel is provided with a flexible plug and a valve plug located on the side of the flexible plug away from the puncture part. The two ends of the flexible plug abut against the mounting cap and the valve plug, respectively.

[0009] When the female connector is not connected to the male connector, the valve plug can close the opening and closing flow channel under the elastic force of the flexible plug; when the female connector is connected to the male connector, the male connector can abut against and push the valve plug to move towards the side closer to the puncture part to open the opening and closing flow channel.

[0010] Further defining the above-mentioned filter puncture device, the opening and closing flow channel includes a stepped hole provided at one end of the female connector near the puncture part, and a connecting hole provided at one end of the female connector away from the puncture part and communicating with the stepped hole.

[0011] The inner diameter of the stepped hole is larger than the inner diameter of the connecting hole, and the valve plug can abut against the inner wall of the stepped hole away from the puncture part under the elastic force of the flexible plug to seal the connecting hole.

[0012] Further specifying, in the above-mentioned filter puncture device, the valve plug includes a top post and an opening / closing plate fixedly disposed at one end of the top post near the puncture part;

[0013] The top post is fitted with the connecting hole with a clearance, and the opening and closing plate is located inside the stepped hole with an outer diameter larger than the inner diameter of the connecting hole.

[0014] Further specifying, in the above-mentioned filter puncture device, the valve plug further includes a flow section disposed at the end of the top column away from the puncture part, and the flow section is provided with a first gap flow channel;

[0015] In the case where the flow section and the male connector are in contact, the connecting hole and the drug discharge channel are connected through the first gap channel of the flow section.

[0016] Further specifying, in the above-mentioned filtering puncture device, the flexible plug includes an insert and abutments fixedly disposed at both ends of the insert along its axial direction, wherein the abutments are provided with a second gap flow channel;

[0017] The insert is fitted with the stepped hole with a clearance, and the transition hole and the opening / closing flow channel are connected through the second clearance flow channel of the abutment rib.

[0018] Further specifying, in the above-mentioned filter puncture device, the mounting cover has a groove on the end face near the puncture part, and the filter membrane is fixedly embedded in the groove.

[0019] Further specifying, in the above-mentioned filter puncture device, the female connector includes a sealing part and a transition part fixedly disposed at the end of the sealing part away from the puncture part, and the opening and closing flow channel is disposed through the sealing part and the transition part.

[0020] The sealing part is fixedly connected to the end of the mounting cover away from the puncture part, and the adapter part is detachably connected to the male connector.

[0021] Further specifying, the aforementioned filter puncture device also includes a protective cap disposed on the female connector and used to seal the opening and closing flow channels.

[0022] Further specifying, in the above-mentioned filtering puncture device, the protective cap includes a sleeve cap connected to the female connector and a folding cap that can be flipped onto the sleeve cap, and a sealing head is fixedly provided on the folding cap;

[0023] When the female connector is not connected to the male connector, the folding cap can be flipped relative to the sleeve cap to block the opening on the side of the flow channel away from the puncture site through the sealing head.

[0024] Further specifying, in the aforementioned filtering puncture device, the female connector further includes a retaining plate fixedly disposed on the adapter and capable of engaging with the cover.

[0025] This utility model has at least the following beneficial effects:

[0026] When the puncture site is inserted into a vial containing medication and the male connector is not connected to the female connector, the valve plug can seal the opening and closing flow channels under the elastic force of the flexible plug to prevent medication leakage. When the female connector is connected to the male connector, the male connector pushes the valve plug to open the opening and closing flow channels. At this time, the medication can be discharged after being filtered through the filter membrane. In other words, the flow state of the medication during use can be adaptively adjusted according to the connection state of the female and male connectors, which greatly improves the flexibility of output control during medication use. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the filter puncture device according to an embodiment of this application;

[0028] Figure 2 This is an exploded view of the structure of the filter puncture device according to an embodiment of this application;

[0029] Figure 3 This is a cross-sectional view of the filter puncture device in the closed state according to an embodiment of this application;

[0030] Figure 4 This is an enlarged schematic diagram of the "valve plug 630" portion of the filter puncture device in the closed state according to an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of the "mounting cap 300" in the filter puncture device according to an embodiment of this application;

[0032] Figure 6 This is a schematic diagram showing the connection between the "female connector 400" and the "flexible plug 620" in the filter puncture device of this application embodiment;

[0033] Figure 7 This is a schematic diagram of the structure of the "female connector 400" in the filter puncture device of this application embodiment;

[0034] Figure 8 This is a cross-sectional view of the "female connector 400" in the filter puncture device of this application embodiment;

[0035] Figure 9 This is a schematic diagram of the structure of the "flexible plug 620" in the filter puncture device according to an embodiment of this application;

[0036] Figure 10 This is a cross-sectional view of the filter puncture device in the open state according to an embodiment of this application;

[0037] Figure 11 This is an enlarged schematic diagram of the "valve plug 630" portion of the filter puncture device in the closed state according to an embodiment of this application;

[0038] Figure 12 This is a schematic diagram of the structure of the "protective cap 500" in the filter puncture device of this application embodiment.

[0039] Figure Labels

[0040] Puncture section-100, drug outlet chamber-101, air cap-110, protective sleeve-200, mounting cap-300, transition hole-310, groove-320, female connector-400, opening and closing flow channel-410, stepped hole-411, connecting hole-412, sealing section-420, adapter section-430, clamping plate-440, protective cap-500, sleeve cap-510, folding cap-521, sealing head-521, filter membrane-610, flexible plug-620, insert-621, rib-622, valve plug-630, top column-631, opening and closing plate-632, flow section-633, male connector-700, drug discharge flow channel-710. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0042] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0043] The filtering puncture device provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0044] like Figures 1 to 12 As shown, this application provides a filter puncture device, including a puncture part 100 and a mounting cover 300 and a female connector 400 fixedly disposed on the puncture part 100.

[0045] The puncture section 100 is provided with a drug outlet cavity 101, and the mounting cover 300 is provided with a transition hole 310 communicating with the drug outlet cavity 101. The female connector 400 is provided with an openable and closed flow channel 410 that can communicate with the transition hole 310.

[0046] A filter membrane 610 covering the drug dispensing chamber 101 and the transition hole 310 is provided between the puncture part 100 and the mounting cover 300. A flexible plug 620 and a valve plug 630 located on the side of the flexible plug 620 away from the puncture part 100 are provided in the opening and closing flow channel 410. The two ends of the flexible plug 620 abut against the mounting cover 300 and the valve plug 630, respectively.

[0047] When the female connector 400 is not connected to the male connector 700, the valve plug 630 can close the opening and closing flow channel 410 under the elastic force of the flexible plug 620; when the female connector 400 is connected to the male connector 700, the male connector 700 can abut against and push the valve plug 630 to move closer to the puncture part 100 to open the opening and closing flow channel 410.

[0048] It should be noted that the male connector 700 is specifically a standard male Luer connector, with a through-hole drug discharge channel 710. This component is a common component in the field and can be detachably connected to the female connector 400, so it will not be described in detail here.

[0049] It is understandable that, such as Figure 3 As shown, when the female connector 400 and male connector 700 are not connected, the flexible plug 620 is located between the mounting cap 300 and the valve plug 630 and is in a compressed state, thereby applying a force to the flexible plug 620 away from the puncture part 100. Under the elastic force applied by the valve plug 630, the flexible plug 620 seals the open / closed flow channel 410. At this time, after the puncture part 100 is inserted into the medicine bottle, the medicine can enter the open / closed flow channel 410 through the medicine outlet chamber 101 and the transition hole 310, and at the same time, the medicine is filtered through the filter membrane 610. Since the open / closed flow channel 410 is in a closed state, the medicine cannot be discharged through the open / closed flow channel 410; Figure 10 As shown, when the female connector 400 and the male connector 700 are connected, the end of the male connector 700 near the puncture part 100 is inserted into the opening and closing flow channel 410, abutting against the valve plug 630 and applying a force to the valve plug 630 near the puncture part 100. Under the thrust of the male connector 700, the flexible plug 620 moves towards the side near the puncture part 100, overcoming the elastic force of the valve plug 630 and further compressing the valve plug 630. At the same time, the opening and closing flow channel 410 is opened. At this time, the medicine entering the opening and closing flow channel 410 can be discharged through the medicine discharge flow channel 710 of the male connector 700, thereby realizing the delivery of medicine.

[0050] In this embodiment, a filter puncture device as described above is used. When the puncture part 100 is inserted into a medicine bottle containing liquid medicine and the male connector 700 is not connected to the female connector 400, the valve plug 630 can seal the opening and closing flow channel 410 under the elastic force of the flexible plug 620 to prevent leakage of the liquid medicine. When the female connector 400 is connected to the male connector 700, the valve plug 630 is pushed by the male connector 700 to open the opening and closing flow channel 410. At this time, the medicine can be discharged after being filtered by the filter membrane 610. That is, the flow state of the medicine during use can be adaptively adjusted according to the connection state of the female connector 400 and the male connector 700, which greatly improves the flexibility of output control during use.

[0051] In a preferred embodiment, such as Figure 3 , Figure 4 , Figure 8 , Figure 10 , Figure 11 As shown, the opening and closing flow channel 410 includes a stepped hole 411 provided at one end of the female connector 400 near the puncture part 100, and a connecting hole 412 provided at one end of the female connector 400 away from the other end and communicating with the stepped hole 411.

[0052] The inner diameter of the stepped hole 411 is larger than the inner diameter of the connecting hole 412. The valve plug 630 can abut against the inner wall of the stepped hole 411 away from the puncture part 100 under the elastic force of the flexible plug 620 to seal the connecting hole 412.

[0053] Understandably, when the female connector 400 is connected to the male connector 700, the end of the male connector 700 near the puncture part 100 can abut against the valve plug 630, thereby pushing the valve plug 630 to move towards the side near the puncture part 100. At this time, the flexible plug 620 is further compressed and accumulates elastic potential energy. The valve plug 630 releases its abutment against the inner wall of the stepped hole 411 away from the puncture part 100. At this time, the stepped hole 411 is connected to the connecting hole 412, thereby realizing the overall opening of the open and closed flow channel 410, and thus realizing the output of the medicine.

[0054] In a preferred embodiment, such as Figure 3 , Figure 4 , Figure 10 , Figure 11 As shown, the valve plug 630 includes a top post 631 and an opening / closing plate 632 fixedly disposed at one end of the top post 631 near the puncture part 100.

[0055] The top post 631 is clearance-fitted with the connecting hole 412, and the opening and closing plate 632 is located inside the stepped hole 411, with its outer diameter being larger than the inner diameter of the connecting hole 412.

[0056] It is understandable that, since the outer diameter of the opening and closing plate 632 is larger than the inner diameter of the connecting hole 412, when the flexible plug 620 applies an elastic force to the opening and closing plate 632, the opening and closing plate 632 can completely cover the opening on the corresponding side of the connecting hole 412, thereby achieving the overall closure of the opening and closing flow channel 410.

[0057] In a preferred embodiment, such as Figure 3 , Figure 4 , Figure 10 , Figure 11 As shown, the valve plug 630 also includes a flow section 633 fixedly disposed at one end of the top post 631 away from the puncture section 100, and the flow section 633 is provided with a first gap flow channel.

[0058] In the case where the male connector 700 and the flow section 633 are in contact, the connecting hole 412 is connected to the drug discharge channel 710 through the first gap flow channel of the flow section 633.

[0059] It is understandable that the distribution section 633 is specifically configured as a plate that does not completely cover the drug discharge channel 710, such as a cross-shaped plate or a straight plate. That is, when the male connector 700 abuts against the distribution section 633, a first gap channel is formed between the top column 631 and the male connector 700, so as to realize the delivery of the drug in the opening and closing channel 410 to the drug discharge channel 710.

[0060] It is understandable that the circulation section 633 can be set as a separate component or as a structural feature on the top column 631, as long as it can realize the transportation of the liquid medicine from the open and closed flow channel 410 to the discharge flow channel 710, which will not be elaborated here.

[0061] In a preferred embodiment, such as Figure 6 , Figure 9 As shown, the flexible plug 620 includes an insert 621 and abutment 622 fixedly disposed at both ends of the insert 621 along the axial direction. The abutment 622 is provided with a second gap flow channel.

[0062] The insert 621 is fitted with the stepped hole 411 with a clearance, and the transition hole 310 is connected to the open / closed flow channel 410 through the second gap flow channel of the abutment 622.

[0063] It is understandable that the abutment 622 is specifically set as a plate that does not completely cover the transition hole 310, such as a cross-shaped plate or a straight plate. That is, when the flexible plug 620 abuts against the mounting cover 300 and the valve plug 630, a second gap channel is formed between the transition hole 310 and the open / closed flow channel 410, so that the drug filtered by the flexible plug 620 can be transported through the transition hole 310 into the open / closed flow channel 410.

[0064] In a preferred embodiment, the minimum fitting clearance between the flexible plug 620 and the stepped hole 411 is set to 0.05-0.5 mm.

[0065] In a preferred embodiment, such as Figure 5 As shown, the mounting cover 300 has a groove 320 on the end face near the puncture part 100, and the filter membrane 610 is fixedly embedded in the groove 320.

[0066] In a preferred embodiment, the mounting cap 300 and the puncture part 100 are connected by ultrasonic heat sealing, thereby ensuring the sealing of the connection between the mounting cap 300 and the puncture part 100.

[0067] In a preferred embodiment, such as Figures 6 to 8 As shown, the female connector 400 includes a sealing part 420 and a transition part 430 fixedly disposed at one end of the sealing part 420 away from the puncture part 100. The opening and closing flow channel 410 is disposed through the sealing part 420 and the transition part 430.

[0068] The sealing part 420 is fixedly connected to the end of the mounting cover 300 away from the puncture part 100, and the adapter part 430 is detachably connected to the male connector 700.

[0069] In a preferred embodiment, the mounting cover 300 and the sealing part 420 are connected by ultrasonic heat sealing, thereby ensuring the sealing of the connection between the mounting cover 300 and the female connector 400.

[0070] In a preferred embodiment, such as Figures 1 to 3 , Figure 10 , Figure 12 As shown, it also includes a protective cap 500 disposed on the female connector 400 and used to block the opening and closing flow channel 410.

[0071] In a preferred embodiment, such as Figures 1 to 3 , Figure 10 , Figure 12 As shown, the cap 500 includes a cover 510 connected to the female connector 400 and a folding cover 520 that can be flipped onto the cover 510. A sealing head 521 is fixedly provided on the folding cover 520.

[0072] In the case where the female connector 400 is not connected to the male connector 700 and the cover 510 and the female connector 400 are connected, the folding cover 520 can be flipped relative to the cover 510 to block the opening of the opening and closing flow channel 410 away from the puncture part 100 through the sealing head 521.

[0073] Understandably, when the filter puncture device is not in use, the cap 500 can seal the open and closed flow channels 410 to prevent drug leakage, while also improving the overall sealing of the filter puncture device and preventing internal contamination.

[0074] In a preferred embodiment, such as Figures 6 to 8 As shown, the female connector 400 also includes a retaining plate 440 that is fixedly mounted on the adapter 430 and can be engaged with the cover 510.

[0075] It is understandable that the installation method of the protective cap 500 on the female connector 400 is not limited to the one mentioned above. For example, the sleeve 510 and the female connector 400 can be set to other detachable connection methods such as threaded connection, or the protective cap 500 can be set to be fixedly connected to the female connector 400. As long as the protective cap 500 can block the opening and closing flow channel 410, it will not be elaborated here.

[0076] In a preferred embodiment, such as Figures 1 to 3 , Figure 10 As shown, it also includes a protective sleeve 200 fitted onto the puncture needle of the puncture section 100.

[0077] Understandably, the protective sleeve 200 can protect the puncture needle of the puncture section 100, on the one hand preventing the puncture needle of the puncture section 100 from being deformed under force and isolating it from contamination, and on the other hand preventing the puncture needle of the puncture section 100 from causing accidental injury to the user.

[0078] In a preferred embodiment, such as Figure 1 , Figure 2 As shown, it also includes an air cover 110 disposed on the puncture section 100.

[0079] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0080] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A filtering puncture device, characterized in that, Includes the puncture section and the mounting cover, female connector, and filter membrane that are fixedly connected to the puncture section; The puncture section has a drug outlet chamber inside, the mounting cover has a through-hole communicating with the drug outlet chamber, the female connector has an openable and closed flow channel communicating with the through-hole, and the filter membrane is disposed between the puncture section and the mounting cover, and covers the drug outlet chamber and the through-hole. The opening and closing flow channel is provided with a flexible plug and a valve plug located on the side of the flexible plug away from the puncture part. The two ends of the flexible plug abut against the mounting cap and the valve plug, respectively. When the female connector is not connected to the male connector, the valve plug can close the opening and closing flow channel under the elastic force of the flexible plug; when the female connector is connected to the male connector, the male connector can abut against and push the valve plug to move towards the side closer to the puncture part to open the opening and closing flow channel.

2. The filtering puncture device according to claim 1, characterized in that, The opening and closing flow channel includes a stepped hole provided at one end of the female connector near the puncture part, and a connecting hole provided at one end of the female connector away from the stepped hole. The inner diameter of the stepped hole is larger than the inner diameter of the connecting hole, and the valve plug can abut against the inner wall of the stepped hole away from the puncture part under the elastic force of the flexible plug to seal the connecting hole.

3. A filtering puncture device according to claim 1 or 2, characterized in that, The valve plug includes a top post and an opening / closing plate fixedly disposed at one end of the top post near the puncture part. The top post is fitted with the connecting hole with a clearance, and the opening and closing plate is located inside the stepped hole with an outer diameter larger than the inner diameter of the connecting hole.

4. A filtering puncture device according to claim 3, characterized in that, The valve plug also includes a flow section disposed at the end of the top post away from the puncture part, and the flow section is provided with a first gap flow channel; In the case where the flow section and the male connector are in contact, the connecting hole and the drug discharge channel are connected through the first gap channel of the flow section.

5. A filtering puncture device according to claim 1 or 2, characterized in that, The flexible plug includes an insert and abutments fixedly disposed at both ends of the insert along the axial direction, wherein the abutments are provided with a second gap flow channel; The insert is fitted with the stepped hole with a clearance, and the transition hole and the opening / closing flow channel are connected through the second clearance flow channel of the abutment rib.

6. A filtering puncture device according to claim 1, characterized in that, The mounting cover has a groove on the end face near the puncture site, and the filter membrane is fixedly embedded in the groove.

7. A filtering puncture device according to claim 1, characterized in that, The female connector includes a sealing part and a transition part fixedly disposed at one end of the sealing part away from the puncture part, and the opening and closing flow channel is disposed through the sealing part and the transition part. The sealing part is fixedly connected to the end of the mounting cover away from the puncture part, and the adapter part is detachably connected to the male connector.

8. A filtering puncture device according to claim 1, characterized in that, It also includes a protective cap installed on the female connector and used to seal the opening and closing flow channels.

9. A filtering puncture device according to claim 8, characterized in that, The protective cap includes a sleeve cover connected to the female connector and a folding cover that can be flipped onto the sleeve cover, and a sealing head is fixedly provided on the folding cover; When the female connector is not connected to the male connector, the folding cap can be flipped relative to the sleeve cap to block the opening on the side of the flow channel away from the puncture site through the sealing head.

10. A filtering puncture device according to any one of claims 7 to 9, characterized in that, The female connector also includes a retaining plate that is fixedly mounted on the adapter and can engage with the cover.

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