Liquid medicine filter with anti-external leakage structure

Abstract

The utility model discloses a liquid medicine filter with prevent extravasation structure, and the upper cover includes the cover body, the top surface middle part of cover body is fixedly connected with the extension piece, and extension piece sets up four in all, each extension piece all equidistance arrangement around the central axis of cover body, and each extension piece is fixedly connected with a plurality of clamping teeth on the side upper end of cover body middle part, each clamping tooth all equidistance arrangement along the length direction of extension piece, and the lower extrusion ring is still fixedly connected on the upper end of one side of extension piece away from clamping tooth, and the outer diameter of lower extrusion ring gradually increases from top to bottom, and each extension piece and clamping tooth are integrally formed, and install the upper connector on the top of upper cover, thereby convenient connection to the inside of external connecting pipeline, and the outer wall of upper connector is fixed with the anti -pull ring, and the contact area of joint and pipeline is increased, and the axial anti -pulling force is improved, and the outer side of anti -pull ring is fixed with the sealing ring made of flexible material, and then the connecting gap is reduced, and the friction between upper connector and external pipeline is also increased, and further prevent breaking away.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a drug filter with an anti-external leakage structure. Background Technology

[0002] A pharmaceutical filter is a device that removes particles, impurities, or microorganisms from pharmaceutical solutions through physical barriers, deep filtration, adsorption, and electrostatic effects. Its core function is to ensure the purity and safety of the pharmaceutical solution.

[0003] Chinese patent discloses a leak-proof drug solution filter (publication number: CN218739745U). This device includes an upper cover and a lower shell. The upper cover has a downward-protruding ring along its lower surface edge, and the lower shell has a groove along its outer edge on the upper surface of the protruding ring. The diameter of the drug solution filter membrane is slightly smaller than the outer diameter of the groove. The upper cover and lower shell tightly clamp the drug solution filter membrane, and the upper cover ring presses the edge of the filter membrane into the groove. This prevents drug leakage and the entry of external particles and microorganisms into the infusion tubing. However, this device also has the following drawbacks:

[0004] Existing liquid filters, such as those described in the prior art, typically have an external plug-in connector at the end. This type of connector is inserted into the pipeline and relies on a protrusion on the outside of the plug to prevent pull-out. However, when connecting the pipeline, this type of connector may become loose and separate due to the pipeline being too soft and easily deformed under long-term pressure, leading to leakage of the liquid. Therefore, a liquid filter with an anti-external leakage structure is proposed to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is as follows: When the connector is connected to the pipeline, the pipeline may be too soft and easily deformed under long-term pressure, resulting in loosening of the connector and leakage of the medicine.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A medicine filter with an anti-leakage structure includes an upper cover and a lower shell below the upper cover. The upper cover includes a cover body, and an extension piece is fixedly connected to the center of the top surface of the cover body. There are four extension pieces, and each extension piece is equidistantly arranged around the central axis of the cover body. A plurality of locking teeth are fixedly connected to the upper end of the side of each extension piece near the center of the cover body, and each locking tooth is equidistantly arranged along the length direction of the extension piece. A lower compression ring is also fixedly connected to the upper end of the side of the extension piece away from the locking teeth. The outer diameter of the lower compression ring gradually increases from top to bottom, and each extension piece and the locking teeth are integrally formed.

[0008] As a further embodiment of this utility model: an internal threaded sleeve is fixedly connected to the top surface of the cover and outside the extension piece, an external threaded sleeve is threaded on the inner wall of the internal threaded sleeve, a rotating disc is fixedly installed on the top of the external threaded sleeve, the middle of the rotating disc is hollowed out, and several anti-slip textures are formed on the outer wall of the rotating disc.

[0009] As a further embodiment of this utility model: an upper extrusion ring is fixedly connected to the upper inner side of the external threaded sleeve, the top surface of the upper extrusion ring is fixedly connected to the bottom surface of the rotating disc, and the inner diameter of the upper extrusion ring gradually increases from top to bottom.

[0010] As a further embodiment of this utility model: the external threaded sleeve is fitted onto the outside of each extension piece, and the inner wall of the upper extrusion ring abuts against the outer wall of the lower extrusion ring.

[0011] As a further embodiment of this utility model: an upper connector is fixedly and through-connected to the center of the top surface of the cover, an anti-pull-out ring is fixedly connected to the middle of the outer wall of the upper connector, and a sealing ring is fixedly connected to the outer wall of the anti-pull-out ring.

[0012] As a further embodiment of this utility model: the lower shell includes a housing, a lower connector is fixedly and through-connected to the center of the bottom surface of the housing, and a medicine filter membrane is fixedly installed in the middle of the interior of the housing.

[0013] As a further embodiment of this utility model: the top of the shell is fixedly connected to the cover, and the bottom surface of the cover abuts against the top of the drug solution filter membrane.

[0014] The beneficial effects of this utility model are:

[0015] This utility model has an upper connector installed on the top of the cover, which facilitates connection to the inside of the external pipeline. The outer wall of the upper connector is fixed with an anti-pull-out ring, which increases the contact area between the connector and the pipeline and improves the axial anti-pull-out force. The outer side of the anti-pull-out ring is fixed with a sealing ring made of flexible material, which reduces the connection gap, improves the sealing performance, and also increases the friction between the upper connector and the external pipeline, further preventing breakage.

[0016] The device has an extension piece fixed on the outside of the upper connector. This structure can be made of materials with elastic deformation capabilities such as silicone rubber and polyurethane. By rotating the turntable on the top of the upper cover, each extension piece can be moved to retract, so that the clamping teeth on the side of the extension piece abut against the pipeline outside the upper connector, forming a "tooth-like engagement". In this way, the pipeline and the upper cover can still maintain connection stability under vibration or external impact, and avoid loosening of the joint and leakage of medicine. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the inner structure of the internal threaded sleeve in this utility model;

[0021] Figure 4 This is a cross-sectional view of the external threaded sleeve in this utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of the extension piece in this utility model;

[0023] Figure 6 This is a schematic diagram of the overall structure of the upper connector in this utility model.

[0024] In the diagram: 1. Top cover; 101. Cover body; 102. Upper connector; 103. Anti-pull-out ring; 104. Sealing ring; 105. Internal threaded sleeve; 106. External threaded sleeve; 107. Turning plate; 108. Upper compression ring; 109. Extension piece; 110. Clamping teeth; 111. Lower compression ring; 2. Lower shell; 201. Shell; 202. Lower connector; 203. Drug solution filter membrane. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figure 1-6 As shown, a medicine filter with an anti-leakage structure includes an upper cover 1 and a lower shell 2 below the upper cover 1. The upper cover 1 includes a cover body 101, and an extension piece 109 is fixedly connected to the center of the top surface of the cover body 101. Four extension pieces 109 are provided, and each extension piece 109 is equidistantly arranged around the central axis of the cover body 101. Several locking teeth 110 are fixedly connected to the upper end of the side of each extension piece 109 closest to the center of the cover body 101, and each locking tooth 110 is equidistantly arranged along the length direction of the extension piece 109. A lower compression ring 111 is also fixedly connected to the upper end of the side of the extension piece 109 away from the locking teeth 110. The outer diameter of the lower compression ring 111 gradually increases from top to bottom, and each extension piece 109 and the locking teeth 110 are integrally formed. Figure 2 , Figure 4 , Figure 5As shown, when the upper extrusion ring 108 falls, the lower extrusion ring 111 is subjected to a force in the direction of the upward connector 102, which causes the extension piece 109 to bend in the direction of the upward connector 102.

[0027] An internally threaded sleeve 105 is fixedly connected to the top surface of the cover 101 and outside the extension piece 109. An externally threaded sleeve 106 is threaded onto the inner wall of the internally threaded sleeve 105. A rotating disc 107 is fixedly installed on the top of the externally threaded sleeve 106. The rotating disc 107 has a hollow center, and several anti-slip textures are formed on its outer side wall. Figure 4 As shown, the anti-slip texture increases the friction between the rotary table 107 and the operator's hand, thus facilitating the rotation of the rotary table 107;

[0028] An upper compression ring 108 is fixedly connected to the upper inner side of the external threaded sleeve 106. The top surface of the upper compression ring 108 is fixedly connected to the bottom surface of the rotating disc 107. The inner diameter of the upper compression ring 108 gradually increases from top to bottom. The external threaded sleeve 106 is fitted over the outside of each extension piece 109, and the inner wall of the upper compression ring 108 abuts against the outer wall of the lower compression ring 111. Figure 2 As shown, the external threaded sleeve 106 is rotated, and under the compression of the internal threaded sleeve 105, the external threaded sleeve 106 drives the upper compression ring 108 to move vertically up and down.

[0029] An upper connector 102 is fixedly and continuously connected to the center of the top surface of the cover 101. An anti-pull-out ring 103 is fixedly connected to the middle of the outer wall of the upper connector 102, and a sealing ring 104 is fixedly connected to the outer wall of the anti-pull-out ring 103. Figure 6 As shown, the sealing ring 104 can be made of silicone.

[0030] The lower shell 2 includes a shell 201, a lower connector 202 fixedly and through-connected to the center of the bottom surface of the shell 201, a medicine filter membrane 203 fixedly installed inside the shell 201, and the top of the shell 201 fixedly connected to the cover 101, with the bottom surface of the cover 101 abutting against the top of the medicine filter membrane 203. Figure 1 As shown, the shell 201 and the cover 101 together limit the position of the liquid filter membrane 203 to prevent the liquid filter membrane 203 from deforming or falling out of place.

[0031] The working principle of this utility model:

[0032] When connecting the upper connector 102 to the liquid delivery pipeline, the pipeline is inserted into the outside of the upper connector 102, and the anti-pull-out ring 103 abuts against the inner wall of the pipeline, thereby preventing the pipeline from easily detaching from the upper connector 102. If it is necessary to further enhance the connection strength between the upper connector 102 and the pipeline, the turntable 107 can be rotated, the external threaded sleeve 106 rotates along the inner side of the internal threaded sleeve 105 and falls, the upper compression ring 108 falls and pushes the upper and lower compression rings 111 from the inside, and then the lower compression ring 111 moves towards the upper connector 102, the extension piece 109 bends and shifts, and then the clamping teeth 110 abut against the outer surface of the pipeline of the upper connector 102. By adjusting the degree of rotation of the turntable 107, the lower compression ring 111 falls within a certain range. The greater the distance, the greater the bending amplitude of the extension piece 109, and the greater the pressure on the pipeline from the clamping teeth 110, thereby preventing the pipeline from detaching from the upper connector 102.

[0033] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A medicine filter with an anti-external leakage structure, comprising an upper cover (1) and a lower shell (2) disposed below the upper cover (1); Its features are, The upper cover (1) includes a cover body (101), and an extension piece (109) is fixedly connected to the middle of the top surface of the cover body (101). There are four extension pieces (109) in total, and each extension piece (109) is arranged equidistantly around the central axis of the cover body (101). Among them, each of the extension pieces (109) has a number of locking teeth (110) fixedly connected to the upper end of one side near the middle of the cover (101), and each of the locking teeth (110) is arranged at equal intervals along the length direction of the extension piece (109). Among them, the upper end of the extension piece (109) located away from the clamping tooth (110) is also fixedly connected to the lower extrusion ring (111). The outer diameter of the lower extrusion ring (111) gradually increases from top to bottom, and each of the extension pieces (109) and the clamping tooth (110) are integrally formed.

2. A medicine filter with an anti-leakage structure according to claim 1, characterized in that, An internal threaded sleeve (105) is fixedly connected to the top surface of the cover (101) and outside the extension piece (109). An external threaded sleeve (106) is threaded on the inner wall of the internal threaded sleeve (105). A rotating disc (107) is fixedly installed on the top of the external threaded sleeve (106). The center of the rotating disc (107) is hollowed out, and several anti-slip patterns are opened on the outer side wall of the rotating disc (107).

3. A pharmaceutical filter with an anti-leakage structure according to claim 2, characterized in that, The upper end of the inner side of the external threaded sleeve (106) is fixedly connected to an upper compression ring (108). The top surface of the upper compression ring (108) is fixedly connected to the bottom surface of the rotating disc (107). The inner diameter of the upper compression ring (108) gradually increases from top to bottom.

4. A pharmaceutical filter with an anti-leakage structure according to claim 3, characterized in that, The external threaded sleeve (106) is sleeved on the outside of each extension piece (109), and the inner wall of the upper extrusion ring (108) abuts against the outer wall of the lower extrusion ring (111).

5. A pharmaceutical filter with an anti-leakage structure according to claim 4, characterized in that, The top surface of the cover (101) is fixedly connected to an upper connector (102), and an anti-pull-out ring (103) is fixedly connected to the middle of the outer wall of the upper connector (102). A sealing ring (104) is fixedly connected to the outer wall of the anti-pull-out ring (103).

6. A pharmaceutical filter with an anti-leakage structure according to claim 1, characterized in that, The lower shell (2) includes a shell (201), a lower connector (202) is fixedly and through the middle of the bottom surface of the shell (201), and a drug liquid filter membrane (203) is fixedly installed in the middle of the interior of the shell (201).

7. A pharmaceutical filter with an anti-leakage structure according to claim 6, characterized in that, The top of the housing (201) is fixedly connected to the cover (101), and the bottom surface of the cover (101) also abuts against the top of the liquid filter membrane (203).

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