Interstitial fluid extraction device with replaceable suction cup

Abstract

The tissue fluid extraction device comprises a connector, the suction cup and a miniature manual extraction air pump, the miniature manual extraction air pump is arranged at one end of the connector, the suction cup is arranged at the other end of the connector, the suction cup comprises a base plate and a fluid suction cylinder, the base plate is arranged at the bottom of the suction cup and connected with the bottom of the suction cup in a buckled mode, and a plurality of suction holes are formed in the base plate. A plurality of liquid suction cylinders are arranged at the top of the base plate and correspond to the suction holes, the base plate comprises clamping rings and clamping strips, the clamping rings are arranged at the positions, close to the peripheries of the liquid suction cylinders, of the top of the base plate, and the clamping strips are arranged on the peripheries of the circumferences of the clamping rings. The base plate is grasped to drive the clamping ring and the clamping strip to rotate, so that the clamping strip rotates in the second rotating groove of the suction cup, after the clamping strip rotates into the first inserting groove, the clamping strip of the base plate is taken out of the first inserting groove of the suction cup, a liquid suction cylinder of the base plate is cleaned, and meanwhile the base plate with suction holes of different sizes can be replaced conveniently.

Description

Technical Field

[0001] This utility model relates to the technical field of micro-liquid extraction devices, specifically a tissue fluid extraction device with a replaceable suction cup. Background Technology

[0002] Common tissue fluid extraction devices use a vacuum pump to create negative pressure on the suction cup to extract tissue fluid from the skin. Common extraction assemblies usually use one or two holes to extract tissue fluid from the skin, but the extraction effect is not obvious, and it is difficult to disassemble, clean or replace the suction cup after extraction. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a tissue fluid extraction device with replaceable suction cups, which solves the problems of ineffective extraction and difficulty in disassembling, cleaning, or replacing the suction cups after tissue fluid extraction.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tissue fluid extraction device with a replaceable suction cup, comprising a connector, a suction cup, and a miniature manual extraction air pump. One end of the connector is equipped with a miniature manual extraction air pump, and the other end of the connector is equipped with a suction cup. The suction cup includes a base plate and a suction cylinder. The base plate is snap-fitted to the bottom of the suction cup. Several suction holes are opened on the base plate, and several suction cylinders are provided on the top of the base plate, with the suction cylinders corresponding to the suction holes.

[0005] Preferably, the connector includes a pump connection cavity, a threaded groove, and a disc connection cavity; one end of the connector has a pump connection cavity, the inner wall of the pump connection cavity has a threaded groove, a miniature manual extraction air pump is installed in the pump connection cavity and fixed by threads, and a suction cup is installed in the disc connection cavity.

[0006] Preferably, the connector includes a first insertion slot, a first rotating slot, and a rotating baffle; the bottom of the connector is provided with a first insertion slot, the inner wall of the first insertion slot is provided with a first rotating slot, the rotating baffle is embedded in the first rotating slot and rotates, and the outer wall of the rotating baffle is provided with a gripper.

[0007] Preferably, the suction cup includes a second insertion groove, a second rotating groove, and a locking block. The upper part of the outer circumference of the suction cup is provided with a locking block, and the lower circumference of the connector is provided with a second insertion groove. The inner wall of the second insertion groove is provided with a second rotating groove. The retaining ring and retaining strip of the chassis cooperate with the second insertion groove and the second rotating groove of the connector to realize the snap-fit ​​connection between the suction cup and the disc connecting cavity.

[0008] Preferably, the suction cup includes a sleeve, a sleeve opening, a piston plate, and a spring assembly; the upper middle part of the inner side of the suction cup is provided with a sleeve, the upper part of the inner side of the sleeve is provided with a piston plate, and a spring assembly is provided between the bottom wall of the sleeve and the piston plate.

[0009] Preferably, the lower circumferential outer wall of the sleeve has a plurality of sleeve openings.

[0010] Preferably, an air pipe opening is provided on the lower circumferential outer wall of the connecting air pipe, and the other end of the connecting air pipe away from the air pipe opening is connected to the pump connecting cavity.

[0011] Preferably, the suction cylinder includes a bottom opening and a top opening, with the top opening at the top and the bottom opening at the bottom.

[0012] Preferably, the chassis includes a retaining ring and retaining strips. A retaining ring is provided on the top of the chassis near the periphery of the suction cylinder, and retaining strips are provided on the circumference of the retaining ring.

[0013] Compared with existing technologies, this invention has the following advantages: (1) This invention uses a micro manual air pump to extract gas from the suction cup, creating negative pressure in the suction cup. The suction tube inside the suction cup extracts tissue fluid from the punctured skin, bringing the tissue fluid to the skin surface for easy testing by the user. (2) This invention uses a base plate to rotate the retaining ring and retaining strip, causing the retaining strip to rotate along the second groove of the suction cup. Once the retaining strip rotates into the first insertion groove, the retaining strip of the base plate is removed from the first insertion groove of the suction cup, allowing for cleaning of the suction tube on the base plate or replacement of the base plate with a different size suction hole. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the connection between the connector and the suction cup of the practical miniature manual air pump.

[0015] Figure 2 This is a schematic diagram of the exploded three-dimensional structure of the suction cup and chassis of this practical application.

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the disk connection cavity in this practical application.

[0017] Figure 4 This is a three-dimensional structural diagram of the connection between the connecting tube and the sleeve in this practical application.

[0018] Figure 5 This is a three-dimensional structural diagram of the connector and suction cup used in this practical application.

[0019] Figure 6 This is a schematic diagram of the three-dimensional structure of the liquid suction cylinder used in this practical application.

[0020] The markings in the diagram are as follows: 1. Connector; 101. Pump connection chamber; 102. Threaded groove; 103. Disc connection chamber; 104. First insertion groove; 105. First rotating groove; 11. Connecting air pipe; 1101. Air pipe opening; 12. Rotating baffle; 2. Suction cup; 201. Second insertion groove; 202. Second rotating groove; 21. Locking block; 22. Sleeve; 2201. Sleeve opening; 2202. Piston plate; 2203. Spring assembly; 23. Chassis; 2301. Snap ring; 2302. Locking strip; 2303. Suction hole; 24. Suction cylinder; 2401. Bottom opening; 2402. Top opening; 3. Miniature manual extraction air pump. Detailed Implementation

[0021] like Figures 1-2 As shown; the present invention provides a technical solution: a tissue fluid extraction device with replaceable suction cup, including a connector 1, a suction cup 2 and a miniature manual extraction air pump 3. One end of the connector 1 is provided with the miniature manual extraction air pump 3, and the other end of the connector 1 is provided with the suction cup 2. The suction cup 2 includes a base plate 23 and a suction cylinder 24. The base plate 23 is located at the bottom of the suction cup 2 and is snapped together. The base plate 23 has a plurality of suction holes 2303. The top of the base plate 23 is provided with a plurality of suction cylinders 24, which correspond to the suction holes 2303 and are used to extract fluid from the skin.

[0022] The connector 1 includes a pump connection cavity 101, a threaded groove 102, and a disc connection cavity 103. One end of the connector 1 has the pump connection cavity 101, and the inner wall of the pump connection cavity 101 has the threaded groove 102. A miniature manual extraction air pump 3 is installed inside the pump connection cavity 101 and fixed by threads. A suction cup 2 is installed inside the disc connection cavity 103. When using the extraction device, the miniature manual extraction air pump 3 and the suction cup 2 must first be assembled onto the connector 1. The miniature manual extraction air pump 3 is then inserted into the pump connection cavity 101 and tightened by threads. Because the miniature manual extraction air pump 3 is fixed to the pump connection cavity 101 by threads, the user can disassemble and reassemble the miniature manual extraction air pump 3 to replace it with other air pumps, such as an automatic miniature extraction air pump.

[0023] like Figure 3 As shown; wherein, the connector 1 includes a first insertion groove 104, a first rotating groove 105 and a rotating baffle 12; the bottom of the connector 1 is provided with a first insertion groove 104, the inner wall of the first insertion groove 104 is provided with a first rotating groove 105, the rotating baffle 12 is embedded in the first rotating groove 105 and rotates, and the outer wall of the rotating baffle 12 is provided with a hand grip plate.

[0024] like Figure 2As shown; wherein, the suction cup 2 includes a second insertion groove 201, a second rotating groove 202, and a locking block 21. The upper part of the outer circumference of the suction cup 2 is provided with a locking block 21, and the lower inner circumference of the connector 1 is provided with a second insertion groove 201. The inner wall of the second insertion groove 201 is provided with a second rotating groove 202. The retaining ring 2301 and retaining strip 2302 of the base 23 cooperate with the second insertion groove 201 and the second rotating groove 202 of the connector 1 to achieve a snap-fit ​​connection between the suction cup 2 and the plate connecting cavity 103; the outer circumference dimension of the suction cup 2 is 5.5 cm; if it is necessary to assemble the suction cup 2, Align the locking block 21 of the suction cup 2 with the first insertion slot 104 of the connector 1 and insert it into the disk connection cavity 103. After the suction cup 2 has been inserted into the disk connection cavity 103 for a certain distance, the locking block 21 of the suction cup 2 will enter the first insertion slot 104. The user grips the hand grip of the rotating baffle 12 and rotates it clockwise, so that the rotating baffle 12 rotates in the first rotating groove 105. After the rotating baffle 12 has rotated for a certain distance, the rotating baffle 12 will rotate to the bottom of the locking block 21, blocking the locking block 21 that has entered the first insertion slot 104 and fixing the suction cup 2 inserted into the disk connection cavity 103.

[0025] After the miniature manual extraction air pump 3 has extracted the gas from the suction cup 2, if it is necessary to disassemble the connector 1 and the miniature manual extraction air pump 3 above the suction cup 2: the user should grasp the gripper of the rotating baffle 12 again and rotate it counterclockwise to rotate the rotating baffle 12 to the initial position and remove it from under the locking block 21 of the suction cup 2. The user can then grasp the connector 1 and move it upwards around the suction cup 2 to remove the connector 1 and the miniature manual extraction air pump 3 from above the suction cup 2.

[0026] like Figure 4 As shown; wherein, the suction cup 2 includes a sleeve 22, a sleeve opening 2201, a piston plate 2202 and a spring assembly 2203; the upper middle part of the inner side of the suction cup 2 is provided with a sleeve 22, the upper part of the inner side of the sleeve 22 is provided with a piston plate 2202, and the bottom wall of the sleeve 22 and the piston plate 2202 are provided with a spring assembly 2203.

[0027] The lower circumferential outer wall of the sleeve 22 has several sleeve openings 2201.

[0028] like Figure 3As shown; wherein, an air pipe opening 1101 is provided on the lower circumferential outer wall of the connecting air pipe 11, and the other end of the connecting air pipe 11 away from the air pipe opening 1101 is connected to the pump connecting cavity 101; if it is necessary to connect the connecting air pipe 11 and the sleeve 22: when the suction cup 2 is inserted into the disc connecting cavity 103, the connecting air pipe 11 of the disc connecting cavity 103 will contact the piston plate 2202 of the suction cup 2, and as the suction cup 2 continues to be inserted, the connecting air pipe 11 will press against the piston plate 2202 of the suction cup 2. The piston plate 2202 compresses the spring assembly 2203 until the upper part of the suction cup 2 is fully inserted into the disc connecting cavity 103. At this time, the sleeve 22 will be sleeved around the connecting air pipe 11, so that the air pipe opening 1101 of the connecting air pipe 11 corresponds to the sleeve opening 2201 of the sleeve 22, connecting the connecting air pipe 11 and the sleeve 22, so that the suction cup 2 and the disc connecting cavity 103 of the connector 1 are connected, which facilitates the subsequent extraction of gas from the suction cup 2.

[0029] If it is necessary to remove the connector 1 and the miniature manual suction pump 3 from above the suction cup 2 and leave the suction cup 2 on the skin surface: the connector 1 moves upward, causing the connecting air tube 11 to move upward within the sleeve 22. At the same time as the connector 1 moves upward, the piston plate 2202 is pushed upward by the elasticity of the compressed spring assembly 2203. After the connector 1 is completely removed, the piston plate 2202 is pushed to the upper part of the inner side of the sleeve 22, closing the sleeve opening 2201 of the sleeve 22. The piston plate 2202 closes the sleeve opening 2201 of the sleeve 22, preventing the negative pressure gas of the suction cup 2 from leaking, thus leaving the suction cup 2 on the skin surface.

[0030] If it is necessary to remove the suction cup 2: the piston plate 2202 can be pressed down, so that the piston plate 2202 slides down along the inner wall of the sleeve 22 to squeeze the spring assembly 2203. After the piston plate 2202 slides down a certain distance, the sleeve opening 2201 of the sleeve 22 is opened. At this time, the inner cavity of the suction cup 2 will be connected to the outside through the sleeve opening 2201, and the suction cup 2 can be removed from the punctured skin surface.

[0031] like Figure 6As shown; wherein, the suction cylinder 24 includes a bottom opening 2401 and a top opening 2402, the top of the suction cylinder 24 has a top opening 2402, and the bottom of the suction cylinder 24 has a bottom opening 2401; and the suction cylinder 24 can be designed in two types, one is a 1 cm suction cylinder 24, and the other is a 1.5 cm suction cylinder 24, and the suction hole 2302 of the base 23 needs to be designed according to the size of the different suction cylinders 24; if it is necessary to extract tissue fluid: use an ultrafiltration needle to puncture the patient's skin, place the suction cup 2 tightly against the surface of the punctured skin, and use a miniature manual suction pump 3. The gas inside the suction cup 2 is continuously extracted manually, causing it to enter the connecting air tube 11 through the air tube opening 1101, the sleeve opening 2201, the bottom opening 2401, and the top opening 2402. The gas then enters the miniature manual extraction air pump 3 along the connecting air tube 11, drawing away the gas from the suction cup 2 and creating a negative cavity. The miniature manual extraction air pump 3 is a type of suction canister. The tissue fluid inside the punctured skin is extracted through the suction cylinder 24 and the suction hole 2303 inside the suction cup 2. After the tissue fluid is extracted to the skin surface, it is convenient for the user to test the tissue fluid.

[0032] like Figure 2 As shown; wherein, the chassis 23 includes a retaining ring 2301 and a retaining strip 2302. The retaining ring 2301 is provided on the outer periphery of the top of the chassis 23 near the suction cylinder 24, and the retaining strip 2302 is provided on the outer periphery of the retaining ring 2301. The chassis 23 is made of silicone material. If the chassis 23 needs to be disassembled for cleaning, grasp the outer wall of the chassis 23 and rotate it clockwise, so that the chassis 23 drives the retaining ring 2301 and the retaining strip 2302 to rotate, so that the retaining strip 2302 rotates along the second rotating groove 202 of the suction cup 2. After the retaining strip 2302 rotates a certain distance, the retaining strip 2302 will enter the second insertion groove 201. The user can remove the retaining strip 2302 of the chassis 23 from the second insertion groove 201 of the suction cup 2 to clean the suction cylinder 24 of the chassis 23 or replace the chassis 23 with a different size suction hole 2303.

[0033] Although embodiments of the present utility have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility; the scope of the present utility is defined by the appended claims and their equivalents.

Claims

1. A tissue fluid extraction device with replaceable suction cup, comprising a connector (1), a suction cup (2), and a miniature manual extraction air pump (3), characterized in that: One end of the connector (1) is equipped with a miniature manual air pump (3), and the other end of the connector (1) is equipped with a suction cup (2). The suction cup (2) includes a base plate (23) and a suction cylinder (24). The base plate (23) is set at the bottom of the suction cup (2) and snapped together. Several suction holes (2303) are opened on the base plate (23), and several suction cylinders (24) are provided on the top of the base plate (23). The suction cylinders (24) correspond to the suction holes (2303).

2. The tissue fluid extraction device with replaceable suction cup according to claim 1, characterized in that: The connector (1) includes a pump connection cavity (101), a threaded groove (102), and a disc connection cavity (103); one end of the connector (1) is provided with a pump connection cavity (101), the inner wall of the pump connection cavity (101) is provided with a threaded groove (102), a miniature manual extraction air pump (3) is set in the pump connection cavity (101) and fixed by threads, and a suction cup (2) is set in the disc connection cavity (103).

3. The tissue fluid extraction device with replaceable suction cup according to claim 2, characterized in that: The connector (1) includes a first insertion groove (104), a first rotating groove (105), and a rotating baffle (12); the bottom of the connector (1) is provided with a first insertion groove (104), the inner wall of the first insertion groove (104) is provided with a first rotating groove (105), the rotating baffle (12) is embedded in the first rotating groove (105) and rotates, and the outer wall of the rotating baffle (12) is provided with a hand gripper.

4. The tissue fluid extraction device with replaceable suction cup according to claim 3, characterized in that: The suction cup (2) includes a second insertion groove (201), a second rotating groove (202), and a locking block (21). The upper part of the outer circumference of the suction cup (2) is provided with a locking block (21), and the lower part of the inner circumference of the connector (1) is provided with a second insertion groove (201). The inner wall of the second insertion groove (201) is provided with a second rotating groove (202). The retaining ring (2301) and the retaining strip (2302) of the chassis (23) cooperate with the second insertion groove (201) and the second rotating groove (202) of the connector (1) to realize the snap-fit ​​connection between the suction cup (2) and the disc connecting cavity (103).

5. The tissue fluid extraction device with replaceable suction cup according to claim 4, characterized in that: The suction cup (2) includes a sleeve (22), a sleeve opening (2201), a piston plate (2202), and a spring assembly (2203); the upper middle part of the inner side of the suction cup (2) is provided with a sleeve (22), the upper part of the inner side of the sleeve (22) is provided with a piston plate (2202), and a spring assembly (2203) is provided between the bottom wall of the sleeve (22) and the piston plate (2202).

6. The tissue fluid extraction device with replaceable suction cup according to claim 5, characterized in that: The lower circumferential outer wall of the sleeve (22) has several sleeve openings (2201).

7. A tissue fluid extraction device with a replaceable suction cup according to claim 6, characterized in that: An air pipe opening (1101) is provided on the lower circumferential outer wall of the connecting air pipe (11), and the other end of the connecting air pipe (11) away from the air pipe opening (1101) is connected to the pump connecting cavity (101).

8. The tissue fluid extraction device with replaceable suction cup according to claim 7, characterized in that: The suction cylinder (24) includes a bottom opening (2401) and a top opening (2402). The top opening (2402) is provided at the top of the suction cylinder (24), and the bottom opening (2401) is provided at the bottom of the suction cylinder (24).

9. A tissue fluid extraction device with replaceable suction cups according to claim 8, characterized in that: The chassis (23) includes a retaining ring (2301) and a retaining strip (2302). The top of the chassis (23) is provided with a retaining ring (2301) near the periphery of the suction cylinder (24), and the periphery of the retaining ring (2301) is provided with a retaining strip (2302).

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