A blood collection tube cap removal machine
By designing a blood collection tube decapping machine, a lifting rod and clamping assembly are used to decap multiple blood collection tubes in batches, solving the problems of low efficiency and poor compatibility in existing technologies, and realizing efficient and economical batch decapping.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHENGDU QIANMAI MEDICAL LAB CO LTD
- Filing Date
- 2025-06-13
- Publication Date
- 2026-05-26
AI Technical Summary
Existing automatic cap-opening devices for blood collection tubes are inefficient, cannot open caps in batches, have poor compatibility, cannot be applied to threaded caps, and are costly.
A blood collection tube decapping machine was designed, including a frame, a lifting rod, a fixing plate, a limiting component, and a clamping component. By adjusting the position of the limiting component and the clamping component through the lifting rod, multiple blood collection tubes can be decapped in batches. It is suitable for blood collection tubes with screw caps and direct caps.
It enables efficient batch capping of multiple blood collection tubes, meets the needs of high-throughput laboratories, is simple and economical to operate, and has a wide range of applications.
Smart Images

Figure CN224279718U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of blood collection tube decapping technology, and more specifically, to a blood collection tube decapping machine. Background Technology
[0002] Early blood collection tubes required manual cap removal, which was inefficient and posed a high risk of biocontamination (such as blood splatter or aerosol release). This was especially problematic when processing large-scale samples, easily leading to operator fatigue and errors. With technological advancements, automatic cap removal devices have been developed. These typically combine a clamping arm with a cap-turning device to remove the cap. For example, patent CN221296087U discloses an automatic cap-opening device for blood collection tubes. Specifically, the blood collection tube is fixed by a bracket, the cap is clamped by a first clamping mechanism, and an electric push rod is activated to lift the cap, thus automatically opening the blood collection tube. However, this device is only suitable for single-tube opening. For batch opening, multiple cap-opening devices are required, failing to meet the demand for batch and economical blood collection tube opening, resulting in high costs and low economic efficiency. Furthermore, for threaded cap blood collection tubes, the cap cannot be directly lifted and separated using only a flashlight push rod, further limiting its applicability.
[0003] Based on the above description, there is an urgent need for a blood collection tube decapping machine that can open caps in batches and has a wide range of applications. Utility Model Content
[0004] The purpose of this utility model is to provide a blood collection tube cap removal machine, which aims to solve the technical problems of low efficiency, poor compatibility, and inability to open caps in batches in existing automatic blood collection tube cap opening devices.
[0005] The embodiments of this utility model are achieved through the following technical solutions:
[0006] A blood collection tube capping machine includes a frame, a lifting rod, a fixed plate, multiple limiting components, multiple clamping components, and a tray. The fixed plate is connected to the top of the frame via the lifting rod. The multiple limiting components are spaced apart at one end of the fixed plate near the tray. The limiting components are rotatably connected to the fixed plate. The multiple clamping components are spaced apart at one end of the tray near the fixed plate. The limiting components and the clamping components are arranged opposite to each other. The tray is connected to the bottom of the frame.
[0007] Preferably, the limiting component includes a limiting groove and a plurality of elastic pads; the plurality of elastic pads are arranged around the inner sidewall of the limiting groove; the groove opening faces the clamping component; the end of the limiting groove away from the clamping component is connected to the fixing plate through a rotating component.
[0008] Preferably, the clamping assembly includes a base, a limiting member, and multiple inflatable arms; the multiple inflatable arms are spaced apart at one end of the base near the limiting groove; the limiting member is sleeved on one end of the inflatable arm near the base.
[0009] Preferably, the inflatable arm includes a connecting portion and a protrusion; the protrusion communicates with the connecting portion; and the protrusions of the plurality of inflatable arms all extend toward the center of the base.
[0010] Preferably, the protrusion is a spherical protrusion.
[0011] Preferably, the spherical protrusion is provided with multiple anti-slip protrusions.
[0012] Preferably, the limiting member includes a perforated plate, multiple slots, and multiple memory springs; the multiple slots are respectively disposed in multiple openings of the perforated plate; the connecting part passes through the perforated plate and is embedded in the slots; the perforated plate is connected to the base through the multiple memory springs.
[0013] Preferably, the pallet is provided with a plurality of limiting cylinders; the clamping assembly is disposed inside the limiting cylinders; and the end of the limiting cylinder away from the pallet is provided with an opening for the limiting assembly to extend into.
[0014] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:
[0015] This invention uses a lifting rod to adjust the height of the fixing plate, thereby simultaneously pushing multiple limiting components on the fixing plate closer to or further away from the clamping components. Multiple clamping components clamp the tube bodies of multiple blood collection tubes, with one end of the cap extending out of the clamping components. The lifting rod then pushes the limiting components towards the cap and limits its position. Rotating the limiting components and lowering the support plate allows for batch cap removal from multiple blood collection tubes. Compared to the existing single-tube, single-machine approach, this invention provides a tube removal device that can simultaneously remove caps in batches, meeting the needs of high-throughput laboratories. It is simple to operate, efficient, and economical, suitable not only for blood collection tubes requiring screw caps but also for existing directly-capped blood collection tubes. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the first state structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the second state structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the clamping component in this utility model;
[0019] Figure 4This is a schematic diagram of the limiting component in this utility model.
[0020] Icons: 1-Frame, 2-Lifting rod, 3-Fixing plate, 4-Limiting component, 41-Limiting groove, 42-Elastic pad, 5-Clamping component, 51-Base, 52-Limiting part, 521-Perforated plate, 522-Perforated groove, 523-Memory spring, 53-Inflatable arm, 531-Connecting part, 532-Protrusion, 6-Support plate, 7-Rotating component, 8-Limiting cylinder. Detailed Implementation
[0021] The specific implementation method is described below with reference to the accompanying drawings.
[0022] Example 1
[0023] Please see Figures 1 to 4 The present invention provides the following technical solution: a blood collection tube decapping machine, which is suitable for batch decapping.
[0024] Specifically, such as Figure 1 and Figure 2 As shown, a blood collection tube capping machine includes a frame 1, a lifting rod 2, a fixed plate 3, multiple limiting components 4, multiple clamping components 5, and a tray 6; the fixed plate 3 is connected to the top of the frame 1 via the lifting rod 2; the multiple limiting components 4 are spaced apart at one end of the fixed plate 3 near the tray 6; the limiting components 4 are rotatably connected to the fixed plate 3; the multiple clamping components 5 are spaced apart at one end of the tray 6 near the fixed plate 3; the limiting components 4 and the clamping components 5 are arranged opposite to each other; the tray 6 is connected to the bottom of the frame 1.
[0025] In this embodiment, the height of the fixed plate 3 is adjusted by the lifting rod 2, thereby simultaneously pushing the multiple limiting components 4 set on the fixed plate 3 closer to or further away from the clamping components 5; the multiple clamping components 5 clamp the tube body of multiple blood collection tubes respectively, while one end of the cap extends out of the clamping components 5, and then the lifting rod 2 pushes the limiting components 4 toward the cap and limits the cap, and then rotates the limiting components 4 and lowers the support plate 6, thereby realizing the batch cap removal of multiple blood collection tubes. Compared with the single tube per machine used in the prior art, the tube removal device of this embodiment can remove caps in batches at the same time. It is simple to operate, efficient and economical, and is not only suitable for blood collection tubes that need to be screwed on, but also for the caps of existing blood collection tubes that are directly covered.
[0026] In this embodiment, the pallet 6 is also connected to the frame 1 via a lifting rod, and the lifting rods involved in this embodiment are all electric lifting rods driven by servo motors; in addition, multiple limiting components 4 are all connected to the fixed plate 3 via rotating seats, and specifically, multiple rotating seats are all driven by synchronous motors.
[0027] Specifically, such as Figure 1 and Figure 4As shown, the limiting component 4 includes a limiting groove 41 and a plurality of elastic pads 42; the plurality of elastic pads 42 are arranged around the inner sidewall of the limiting groove 41; the groove opening end of the limiting groove 41 faces the clamping component 5; the end of the limiting groove 41 away from the clamping component 5 is connected to the fixing plate 3 through the rotating component 7.
[0028] In this embodiment, the elastic pad 42 is made of elastic silicone or rubber material, which can stretch and compress the outer wall of the fixed cap during the process of the blood collection tube cap being embedded in the limiting groove 41 so as to facilitate further twisting and opening of the cap.
[0029] Specifically, such as Figure 2 and Figure 3 As shown, the clamping assembly 5 includes a base 51, a limiting member 52, and multiple inflatable arms 53; the multiple inflatable arms 53 are spaced apart at one end of the base 51 near the limiting groove 41; the limiting member 52 is sleeved on one end of the inflatable arm 53 near the base 51.
[0030] In this embodiment, multiple inflation arms 53 are all connected to an air pump. The inflation speed is monitored in real time by a pressure sensor to ensure that the pressure rises evenly to a preset threshold. A venting solenoid valve is further installed to facilitate appropriate venting and relaxation, allowing the blood collection tube to be removed or inserted. The air pump is an existing air pump with a built-in integrated control module. Its core function is to achieve precise air pressure control, status monitoring, and user interaction through the collaborative work of circuits, sensors, and algorithms. The venting solenoid valve is electrically connected to the control module of the air pump.
[0031] Specifically, such as Figure 3 As shown, the inflatable arm 53 includes a connecting part 531 and a protrusion 532; the protrusion 532 is connected to the connecting part 531; the protrusions 532 of the multiple inflatable arms 53 all extend toward the center of the base 51.
[0032] In this embodiment, the protrusion 532 is a spherical protrusion 532. The spherical protrusion 532 is provided with multiple anti-slip protrusions. By using a spherical protrusion and providing multiple anti-slip protrusions, the blood collection tube body part can be securely clamped during the cap removal process.
[0033] Specifically, such as Figure 3 As shown, the limiting member 52 includes a perforated plate 521, multiple slots 522 and multiple memory springs 523; the multiple slots 522 are respectively provided through multiple openings in the perforated plate 521; the connecting part 531 passes through the perforated plate 521 and is embedded in the slots 522; the perforated plate 521 is connected to the base 51 through the multiple memory springs 523.
[0034] In this embodiment, the connecting part 531 can be limited by the slot 522 to prevent the inflatable arm 53 from tipping over; the perforated plate 521 is connected to the base 51 by multiple memory springs 523, which further ensures the stability of the inflatable arm 53 and prevents the perforated plate 521 from being misaligned or shifted.
[0035] Specifically, such as Figure 1 As shown, the pallet 6 is provided with multiple limiting cylinders 8; the clamping assembly 5 is disposed inside the limiting cylinder 8; the end of the limiting cylinder 8 away from the pallet 6 is provided with an opening for the limiting assembly 4 to extend into.
[0036] In this embodiment, the limiting cylinder 8 can further ensure that the blood collection tube body placed in the clamping assembly 5 is not easy to tip over, and further avoids the tipping of the blood collection tube due to operational errors during the placement of the blood collection tube.
Claims
1. A blood collection tube decapper comprising a frame (1), characterized in that: It also includes a lifting rod (2), a fixing plate (3), multiple limiting components (4), multiple clamping components (5), and a tray (6); the fixing plate (3) is connected to the top of the frame (1) through the lifting rod (2); multiple limiting components (4) are spaced apart at one end of the fixing plate (3) near the tray (6); the limiting components (4) are rotatably connected to the fixing plate (3); multiple clamping components (5) are spaced apart at one end of the tray (6) near the fixing plate (3); the limiting components (4) and the clamping components (5) are arranged opposite to each other; the tray (6) is connected to the bottom of the frame (1).
2. The blood collection tube decapper of claim 1, wherein: The limiting component (4) includes a limiting groove (41) and a plurality of elastic pads (42); the plurality of elastic pads (42) are arranged around the inner sidewall of the limiting groove (41); the groove opening of the limiting groove (41) faces the clamping component (5); the end of the limiting groove (41) away from the clamping component (5) is connected to the fixing plate (3) through the rotating component (7).
3. The blood collection tube decapper of claim 2, wherein: The clamping assembly (5) includes a base (51), a limiting member (52), and a plurality of inflatable arms (53); the plurality of inflatable arms (53) are spaced apart at one end of the base (51) near the limiting groove (41); the limiting member (52) is sleeved on one end of the inflatable arm (53) near the base (51).
4. The blood collection tube decapper of claim 3, wherein: The inflatable arm (53) includes a connecting part (531) and a protrusion (532); the protrusion (532) is connected to the connecting part (531); the protrusions (532) of the plurality of inflatable arms (53) all extend toward the center of the base (51).
5. The blood collection tube decapping machine according to claim 4, characterized in that: The protrusion (532) is a spherical protrusion.
6. The blood collection tube decapping machine according to claim 5, characterized in that: The spherical protrusion is provided with multiple anti-slip protrusions.
7. The blood collection tube decapping machine according to claim 6, characterized in that: The limiting member (52) includes a perforated plate (521), multiple slots (522), and multiple memory springs (523); the multiple slots (522) are respectively inserted through multiple openings in the perforated plate (521); the connecting part (531) passes through the perforated plate (521) and is embedded in the slots (522); the perforated plate (521) is connected to the base (51) through the multiple memory springs (523).
8. The blood collection tube decapping machine according to any one of claims 3 to 6, characterized in that: The pallet (6) is provided with multiple limiting cylinders (8); the clamping assembly (5) is disposed inside the limiting cylinder (8); the end of the limiting cylinder (8) away from the pallet (6) is provided with an opening for the limiting assembly (4) to extend into.