A replaceable ear syringe

Abstract

This utility model relates to the technical field of pipetting devices for medical testing. To address the problem that existing pipette bulbs are one-piece designs, becoming unusable when the tip is contaminated or corroded, this utility model provides a replaceable pipette bulb, comprising a first bulb, a second tube, and a third tip. The second tube is located at the open end of the first bulb. A connecting assembly is connected to the third tip at its end away from the first bulb. The first bulb, the second tube, and the third tip are sequentially connected. This replaceable pipette bulb allows for tip removal and replacement after each use, meeting the specific need for avoiding cross-contamination in clinical testing. It is also suitable for general pipetting scenarios, allowing for multiple uses. Replacement is only required when backflow or corrosion occurs, eliminating the need for complete replacement. This design is economical and easy to operate.

Description

Technical Field

[0001] This utility model relates to the technical field of pipetting devices for medical testing, and more specifically, to a replaceable ear syringe. Background Technology

[0002] The core technology of a bulb syringe lies in the siphon effect and pressure differential control. By squeezing the elastic bulb to expel internal air and create negative pressure, liquid or gas is drawn in. After releasing the pressure, external atmospheric pressure forces the target substance into or out of the tube, avoiding the health risks associated with traditional oral aspiration and allowing for precise control of liquid volume (especially when used with pipettes and micropipettes). However, while bulb syringes allow for precise liquid extraction in conjunction with pipettes, over-absorption can occur, causing liquid to easily enter the bulb tip and even the bulb itself. Furthermore, the bulb tip is prone to contamination or corrosion during use, and existing one-piece bulb syringes do not allow for tip replacement, resulting in a high scrap rate and limited lifespan.

[0003] Based on the above description, there is an urgent need for an ear syringe device with optimized structure and easily replaceable suction heads. Utility Model Content

[0004] The purpose of this invention is to provide a replaceable syringe bulb, which aims to solve the technical problem that existing syringe bulbs are one-piece designs, and the entire bulb is scrapped when the tip is contaminated or corroded, making them unusable and unsuitable for pipetting scenarios where cross-contamination is likely.

[0005] The embodiments of this utility model are achieved through the following technical solutions:

[0006] A replaceable ear syringe includes a first bulb, a second tube, and a third suction head; the second tube is disposed at the open end of the first bulb; the end of the connecting assembly away from the first bulb is connected to the third suction head via the connecting assembly; the first bulb, the second tube, and the third suction head are sequentially connected.

[0007] Preferably, the second tube body includes a connecting portion and a funnel-shaped constriction portion; the connecting portion is connected to the first ball portion; the wide end of the funnel-shaped constriction portion is located at the end of the connecting portion away from the first ball portion; the narrow end of the funnel-shaped constriction portion extends toward the third suction head; and a receiving groove is provided at one end of the third suction head for the funnel-shaped constriction portion to be embedded.

[0008] Preferably, a reverse osmosis gas membrane is provided at the end of the connecting portion near the first ball portion.

[0009] Preferably, the connecting assembly includes a first connecting ring, a second receiving ring, and a plurality of third locking blocks; the first connecting ring is located at one end of the funnel-shaped constriction section near the connecting part; the second receiving ring is located at one end of the third suction head near the second tube body; the first connecting ring has a plurality of slots for the third locking blocks to be inserted into the second receiving ring.

[0010] Preferably, the third suction head has a protrusion at one end near the second tube body; the cross-section of the protrusion is an isosceles trapezoid; the protrusion divides the end of the third suction head near the second tube body into the receiving groove, the constricting end, and the flared end symmetrical to the receiving groove.

[0011] Preferably, the end of the third suction head furthest from the second tube is the air inlet end; the diameter of the third suction head gradually increases from the air inlet end toward the second tube.

[0012] Preferably, a plurality of anti-slip pads are attached to the end of the first ball portion away from the second tube body.

[0013] Preferably, the anti-slip pad is connected to the outer wall of the first ball via a Velcro assembly.

[0014] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0015] In this invention, the bulb syringe consists of three parts: a first bulb, a second tube, and a third pipette tip. The second tube and the open end of the first bulb are integrally formed to facilitate connection with the third pipette tip via a connecting assembly. The third pipette tip can be used as a disposable tip and can be disassembled and replaced after each use to meet the special requirement of avoiding poor contamination. It is also suitable for ordinary pipetting scenarios and can be used multiple times. It can be replaced when backflow or corrosion contamination occurs, without the need for complete replacement. It is economical and easy to operate. Attached Figure Description

[0016] Figure 1 This is an exploded view of the present invention;

[0017] Figure 2 for Figure 1 Enlarged schematic diagram of local structure A in the middle;

[0018] Figure 3 for Figure 2 A sectional view.

[0019] Icons: 1-First ball part, 2-Second tube body, 21-Connecting part, 22-Fish-shaped constriction part, 3-Third suction head, 31-Receiving groove, 32-Constriction end, 33-Flanged end, 4-Connecting assembly, 41-First connecting ring, 42-Second receiving ring, 43-Third locking block, 5-Reverse osmosis gas membrane, 6-Protrusion, 7-Anti-slip pad. Detailed Implementation

[0020] The specific implementation method is described below with reference to the accompanying drawings.

[0021] Example 1

[0022] Please see Figures 1 to 3 This utility model provides the following technical solution: a replaceable ear syringe, suitable for replacing disposable suction tips.

[0023] Specifically, such as Figure 1 and Figure 2 As shown, a replaceable ear syringe includes a first bulb 1, a second tube 2, and a third suction head 3; the second tube 2 is located at the open end of the first bulb 1; the end of the second tube 2 away from the first bulb 1 is connected to the third suction head 3 through a connecting component 4; the first bulb 1, the second tube 2, and the third suction head 3 are connected in sequence.

[0024] In this embodiment, the bulb syringe consists of three parts: a first bulb 1, a second tube 2, and a third pipette tip 3. The second tube 2 and the opening end of the first bulb 1 are integrally formed to facilitate connection with the third pipette tip 3 via the connecting component 4. The third pipette tip 3 can be used as a disposable pipette tip, which can be disassembled and replaced after each use to meet the special requirement of avoiding poor contamination. It can also be used in ordinary pipetting scenarios and can be used multiple times. It can be replaced when backflow or corrosion contamination occurs, without the need for complete replacement. It is economical and easy to operate.

[0025] Specifically, such as Figure 2 and Figure 3 As shown, the second tube body 2 includes a connecting part 21 and a funnel-shaped constriction part 22; the connecting part 21 is connected to the first ball part 1; the wide end of the funnel-shaped constriction part 22 is located at the end of the connecting part 21 away from the first ball part 1; the narrow end of the funnel-shaped constriction part 22 extends toward the third suction head 3; one end of the third suction head 3 is provided with a receiving groove 31 for the funnel-shaped constriction part 22 to be inserted.

[0026] In this embodiment, by setting a funnel-shaped contraction part 22 and cooperating with a prefabricated corresponding receiving groove 31, the sealing performance and stability of the connection are improved after the funnel-shaped contraction part 22 is embedded in the receiving groove 31. The funnel-shaped contraction part 22 is preferably a sealing material commonly used in the art, such as rubber or silicone.

[0027] In this embodiment, a reverse osmosis membrane 5 is provided at one end of the connecting part 21 near the first ball part 1; the reverse osmosis membrane is made of PE / PP porous membrane, which allows air to pass through while preventing the solution from flowing into the first ball part 1 during the liquid transfer process.

[0028] Specifically, such as Figure 2 and Figure 3 As shown, the connecting component 4 includes a first connecting ring 41, a second receiving ring 42, and a plurality of third locking blocks 43; the first connecting ring 41 is located at one end of the bucket-shaped contraction section 22 near the connecting section 21; the second receiving ring 42 is located at one end of the third suction head 3 near the second tube body 2; the first connecting ring 41 has a plurality of slots for the third locking blocks 43 to be inserted into the second receiving ring 42.

[0029] In this embodiment, the locking block 43 is made of a commonly used locking block material in the art, namely elastic plastic or rubber, which achieves the locking effect through its recoverable deformation, and is easy to disassemble.

[0030] Specifically, such as Figure 2 As shown, the third suction head 3 has a protrusion 6 at one end near the second tube body 2; the cross-section of the protrusion 6 is an isosceles trapezoid; the protrusion 6 divides the end of the third suction head 3 near the second tube body 2 into a receiving groove 31, a constriction end 32 and a flared end 33 symmetrical to the receiving groove 31.

[0031] In this embodiment, the protrusion 6 is actually a ring-shaped structure, with one end away from the second tube 2 protruding towards the center.

[0032] In this embodiment, the end of the third suction head 3 away from the second tube 2 is the air inlet end; the diameter of the third suction head 3 gradually increases from the air inlet end toward the second tube 2, forming a conical guide structure to optimize airflow stability.

[0033] Specifically, such as Figure 1 As shown, a plurality of anti-slip pads 7 are attached to the end of the first ball part 1 away from the second tube body 2. The anti-slip pads 7 are connected to the outer wall of the first ball part 1 by Velcro.

[0034] In this embodiment, the anti-slip pad 7 is provided with anti-slip protrusions or anti-slip textures, and its other side is bonded with a hook and loop fastener. Correspondingly, the outer side of the first ball part 1 is provided with a hook and loop fastener hook surface that corresponds to the hook and loop fastener.

Claims

1. A replaceable ear bulb, characterized by: It includes a first ball part (1), a second tube body (2) and a third suction head (3); the second tube body (2) is located at the open end of the first ball part (1); the end of the second tube body (2) away from the first ball part (1) is connected to the third suction head (3) through a connecting component (4); the first ball part (1), the second tube body (2) and the third suction head (3) are connected in sequence.

2. The replaceable ear bulb as claimed in claim 1, wherein: The second tube body (2) includes a connecting part (21) and a funnel-shaped constriction part (22); the connecting part (21) is connected to the first ball part (1); the wide end of the funnel-shaped constriction part (22) is located at the end of the connecting part (21) away from the first ball part (1); the narrow end of the funnel-shaped constriction part (22) extends toward the third suction head (3); one end of the third suction head (3) is provided with a receiving groove (31) for the funnel-shaped constriction part (22) to be embedded.

3. The replaceable ear bulb as claimed in claim 2, wherein: The connecting part (21) is provided with a reverse osmosis gas membrane (5) at one end near the first ball part (1).

4. The replaceable ear syringe according to claim 2 or 3, characterized in that: The connecting component (4) includes a first connecting ring (41), a second receiving ring (42), and a plurality of third locking blocks (43); the first connecting ring (41) is located at one end of the funnel-shaped constriction part (22) near the connecting part (21); the second receiving ring (42) is located at one end of the third suction head (3) near the second tube body (2); the first connecting ring (41) has a plurality of slots for the third locking blocks (43) to be inserted into the second receiving ring (42).

5. The replaceable ear syringe according to claim 4, characterized in that: The third suction head (3) has a protrusion (6) at one end near the second tube body (2); the cross-section of the protrusion (6) is an isosceles trapezoid; the protrusion (6) divides the end of the third suction head (3) near the second tube body (2) into the receiving groove (31), the constriction end (32) and the flared end (33) symmetrical to the receiving groove (31).

6. The replaceable ear syringe according to claim 4, characterized in that: The end of the third suction head (3) away from the second tube (2) is the air inlet end; the diameter of the third suction head (3) gradually increases from the air inlet end toward the second tube (2).

7. The replaceable ear syringe according to claim 2 or 3, characterized in that: Multiple anti-slip pads (7) are attached to the end of the first ball part (1) away from the second tube body (2).

8. The replaceable ear syringe according to claim 7, characterized in that: The anti-slip pad (7) is connected to the outer wall of the first ball part (1) by a Velcro assembly.

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