A luer cap unscrewing device for a catheter flusher

Abstract

The utility model discloses a luer cap unscrewing device suitable for catheter flusher, include: shell and unscrewing subassembly, be equipped with the installation cavity in the shell, its top end horizontal arrangement and be equipped with the installation hole of communication with installation cavity, the unscrewing subassembly includes rudder machine and unscrewing piece, rudder machine fixed end and installation cavity side wall surface fixed connection, the first end of unscrewing piece and rudder machine power output end transmission connection, second end is located in the installation hole and with shell top end flush, second end is equipped with the unscrewing groove of corresponding arrangement with luer cap radial outer surface. The utility model discloses a rudder machine drive unscrewing piece and the stable cooperation of luer cap, solved the centrifugal liquid mixing layer, sample waste and the problem of low sampling accuracy caused by the uneven speed, attitude deviation when the torque of existing manual unscrewing luer cap is not controllable.

Description

Technical Field

[0001] This utility model relates to the field of medical device auxiliary device technology, and more specifically to a Luer cap loosening device suitable for catheter flushing devices. Background Technology

[0002] In clinical and laboratory procedures, catheter flushing devices, after being sealed with a Luer cap, are often placed directly into a centrifuge, relying on centrifugal force to separate the liquid within the tube according to density. After centrifugation, the Luer cap must be unscrewed to extract the individual components. However, the currently commonly used manual loosening method has the following common problems:

[0003] Uncontrollable loosening torque: Operators apply force by feel, and the starting force is often much greater than the static friction of the thread, resulting in an instantaneous "break-in" effect. The impact force is transmitted to the tube body along the rigid thread, causing the already separated liquid surface to shake violently. In mild cases, a second centrifugation is required, and in severe cases, precious samples are wasted.

[0004] Uneven sloshing speed: It is difficult for a human hand to maintain a constant angular velocity. The sudden increase or decrease in speed causes inertial turbulence inside the cavity, and the density gradient interface is sheared and mixed, which directly affects the accuracy of subsequent quantitative sampling.

[0005] Posture deviations are difficult to avoid: when supporting the tube body with one hand or tightening the cap with one hand, lateral forces are easily introduced, causing the cap to swing radially at the moment of loosening, which further aggravates the liquid oscillation; when operating with gloves, the slippage phenomenon is more significant, requiring repeated compensation of force, and the cumulative effect of disturbance is obvious.

[0006] Therefore, how to provide a new Luer cap loosening device suitable for catheter flushing devices that can eliminate the technical problem of interface disturbance caused by manual loosening is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the present invention provides a Luer cap loosening device suitable for catheter flushing, which aims to solve the above-mentioned technical problem that manually loosening the Luer cap after centrifugation easily causes the layer interface to shake and leads to sample mixing.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A Luer cap loosening device for catheter flushing devices, which, after being tightened and sealed at the tip of the catheter flushing device by a Luer cap, can be used as a containment device during centrifugation, comprising:

[0010] The housing has an internal mounting cavity, and the top of the housing is horizontally arranged and has a mounting hole communicating with the mounting cavity.

[0011] The loosening assembly includes a servo motor and a loosening component. The fixed end of the servo motor is fixedly connected to the side wall of the mounting cavity. The first end of the loosening component is connected to the power output end of the servo motor. The second end of the loosening component is located in the mounting hole and is flush with the top of the housing. The second end of the loosening component has a loosening groove that corresponds to the radial outer surface of the Luer cap.

[0012] Therefore, this invention effectively solves the technical problem of interference caused by operational instability during manual loosening of the Luer cap, which affects the stratified liquid in the centrifugation tubing flusher. The servo motor's fixed end is connected to the side wall of the mounting cavity to ensure stable installation. Its power output end is connected to the loosening component, whose second end extends through a mounting hole at the top of the housing and is flush with the top. The loosening groove at the second end of the loosening component precisely matches the radial outer surface of the Luer cap. Utilizing the servo motor's high low-speed torque and stable operation, the loosening component, which drives the Luer cap, avoids uneven force and speed fluctuations that may occur during manual operation. This prevents the stratified liquid from mixing due to external interference, ensuring the stability of the stratified liquid. This provides an accurate and reliable basis for subsequent operations on the stratified liquid (such as sampling and testing), improving the operational accuracy and efficiency of the tubing flusher in the post-centrifugation processing.

[0013] Preferably, the loosening component includes a mounting plate, a connecting frame, and a sleeve. The lower surface of the mounting plate is detachably connected to the power output end of the servo motor. The bottom end of the connecting frame is fixedly connected to the upper surface of the mounting plate. The sleeve is located inside the mounting hole, and its top end is flush with the top end of the housing. The top end of the sleeve has a loosening groove that penetrates its inner surface. The outer surface of the sleeve is fixedly connected to the top end of the connecting frame.

[0014] Preferably, the number of connecting brackets is multiple and they are arranged in a uniform array along the circumference of the sleeve.

[0015] Preferably, it also includes a connecting plate, which is fixedly connected to the power output end of the servo motor and detachably connected to the lower surface of the mounting plate.

[0016] Preferably, it also includes a mounting plate, which is fixedly connected to the side wall of the mounting cavity, and the fixed end of the servo is fixedly connected to the mounting plate.

[0017] Preferably, it also includes support legs, with multiple support legs evenly supported at the bottom of the housing, and each support leg is detachably connected to the bottom of the housing.

[0018] Preferably, the support leg includes a support column and a suction cup, the top of the support column is detachably connected to the bottom of the housing, and the suction cup is fixedly connected to the bottom of the support column.

[0019] Preferably, it also includes a power supply module, the input of which is connected to an external power source, and the output of which is connected to the servo motor via a wire.

[0020] Preferably, the loosening assembly also includes a switch, which is installed inside the mounting cavity and its operation button is exposed outside the housing. The switch is connected in series in the line between the output terminal of the power supply module and the servo motor.

[0021] Preferably, there are two loosening components, which are symmetrically distributed along the center of the side of the shell.

[0022] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a Luer cap loosening device suitable for catheter flushing devices, which has the following beneficial effects:

[0023] By using an automated combination of a servo motor and a loosening mechanism, the traditional manual loosening operation is replaced, eliminating problems such as uncontrollable manual force application, uneven speed, and posture deviation. This avoids the mixing of layers in the stratified liquid after centrifugation due to impact, turbulence, and swaying, eliminating the need for secondary centrifugation, reducing waste of precious samples, and ensuring the accuracy of subsequent quantitative sampling. The housing mounting cavity provides a stable mounting space for the servo motor, and the horizontally arranged mounting holes at the top ensure that the second end of the loosening mechanism is flush with the top of the housing, so that the force direction is perpendicular when the Luer cap is embedded in the loosening groove, without additional lateral force, further reducing the risk of liquid oscillation. The loosening groove and the radial outer surface of the Luer cap are precisely aligned, ensuring no slippage during transmission and stable torque transmission. It is suitable for centrifugation processes: the device can be used with a tubing flusher (the Luer cap is sealed and used as a centrifugation container). After centrifugation, the Luer cap can be loosened directly through the device without transferring the container, simplifying the operation process and reducing interference with the sample from intermediate steps. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 The attached figure is a structural schematic diagram of a Luer cap loosening device suitable for a catheter flushing device provided by this utility model;

[0026] Figure 2 The attached figure is an exploded schematic diagram of a Luer cap loosening device suitable for a catheter flushing device provided by this utility model;

[0027] Figure 3 The attached figure is a structural schematic diagram of the servo motor and loosening component provided by this utility model in the assembled state;

[0028] Figure 4 The attached diagram is an exploded view of the servo motor and loosening component provided by this utility model under assembly.

[0029] Figure 5 The attached figure is a partial cross-sectional view of the loosening component provided by this utility model.

[0030] in:

[0031] 1-Housing; 2-Loosening assembly; 10-Mounting cavity; 11-Housing body; 12-Top cover; 13-Mounting plate; 14-Support leg; 21-Servo; 22-Loosening component; 23-Switch; 121-Mounting hole; 141-Support column; 142-Suction cup; 211-Mounting plate; 220-Loosening groove; 221-Mounting plate; 222-Connecting bracket; 223-Sleeve; 2210-Positioning groove. Detailed Implementation

[0032] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] See appendix Figure 1 To be continued Figure 5 This utility model discloses a Luer cap loosening device suitable for catheter flushing devices. After the tip of the catheter flushing device is tightened and sealed by the Luer cap, it can be used as a receiving device in the centrifugation process. It includes: a housing 1 and a loosening component 2.

[0034] The housing 1 has an internal mounting cavity 10, and the top of the housing 1 is horizontally arranged and has a mounting hole 121 communicating with the mounting cavity 10.

[0035] The loosening assembly 2 includes a servo motor 21 and a loosening component 22. The fixed end of the servo motor 21 is fixedly connected to the side wall of the mounting cavity 10. The first end of the loosening component 22 is connected to the power output end of the servo motor 21. The second end of the loosening component 22 is located inside the mounting hole 121 and is flush with the top of the housing 1. The second end of the loosening component 22 has a loosening groove 220 that corresponds to the radial outer surface of the Luer cap.

[0036] Specifically, the housing 1 includes a housing body 11 and a top cover 12. The housing body 11 has a stepped cross-section. A mounting groove is provided at the top of the housing body 11. The top cover 12 covers the opening of the mounting groove and is fixedly connected to the top of the housing body 11. The top end face of the top cover 12 is horizontally arranged and has a mounting hole 121. The fixed end of the servo motor 21 is fixedly connected to the side wall of the mounting groove.

[0037] In this embodiment, the loosening component 22 includes a mounting plate 221, a connecting frame 222, and a sleeve 223. The lower surface of the mounting plate 221 is detachably connected to the power output end of the servo motor 21. The bottom end of the connecting frame 222 is fixedly connected to the upper surface of the mounting plate 221. The sleeve 223 is located inside the mounting hole 121, and its top end is flush with the top end of the housing 1. A loosening groove 220 penetrating the inner surface of the sleeve 223 is provided at the top end of the sleeve 223. The outer surface of the sleeve 223 is fixedly connected to the top end of the connecting frame 222. Thus, the sleeve 223 is located inside the mounting hole 121 and its top end is flush with the top end of the housing 1, which limits the radial displacement of the sleeve 223, preventing wobbling during rotation, and ensures the height adaptability when the Luer cap is inserted, preventing uneven force due to height deviation. The fixed connection method of the connecting frame 222 further enhances the overall rigidity of the loosening component 22, reduces deformation during power transmission, and improves the smoothness of the loosening action.

[0038] Specifically, the side wall of the loosening groove 220 is provided with anti-slip grooves along the axial direction of the sleeve 223, and multiple anti-slip grooves are arranged in a circumferential array along the axis of the sleeve 223.

[0039] In some embodiments, the number of connecting brackets 222 is multiple and they are arranged in a uniform array along the circumference of the sleeve 223. Thus, the uniformly distributed connecting brackets 222 can disperse the torque load when the sleeve 223 rotates, avoid individual connecting brackets 222 from breaking or deforming due to excessive load, extend the service life of the loosening component 22, improve the overall durability of the device, and meet the needs of long-term, high-frequency clinical or laboratory operations.

[0040] Specifically, there are four connecting brackets 222, which are evenly arranged in an array along the circumference of the sleeve 223.

[0041] In some embodiments, a connecting plate 211 is also included. The connecting plate 211 is fixedly connected to the power output end of the servo motor 21 and detachably connected to the lower surface of the mounting plate 221. Thus, if the loosening part 22 fails, it can be replaced separately without replacing the entire servo motor 21, reducing maintenance costs.

[0042] Specifically, the lower surface of the mounting plate 221 is provided with a positioning groove 2210 corresponding to the connecting plate 211, and the connecting plate 211 and the mounting plate 221 are detachably connected by bolts.

[0043] In one embodiment, the device further includes a mounting plate 13, which is fixedly connected to the side wall of the mounting cavity 10, and the fixed end of the servo motor 21 is fixedly connected to the mounting plate 13.

[0044] In another embodiment, a plurality of support legs 14 are also included, which are evenly supported on the bottom end of the housing 1 and are all detachably connected to the bottom end of the housing 1.

[0045] In this embodiment, the support leg 14 includes a support column 141 and a suction cup 142. The top end of the support column 141 is detachably connected to the bottom end of the housing 1, and the suction cup 142 is fixedly connected to the bottom end of the support column 141. Thus, the suction cup 142 structure of the support leg 14 can be tightly adhered to the surface of the operating table. Compared with traditional rigid support legs, it can effectively prevent the device from shifting due to the vibration of the servo motor 21 during the loosening process, thereby improving placement stability. The elastic material of the suction cup 142 can also absorb some vibration, reducing the vibration transmitted to the inside of the housing 1, further reducing the shaking of the loosening component 22 during operation, and indirectly protecting the layered liquid state.

[0046] In some specific embodiments, a power supply module is also included. The input terminal of the power supply module is connected to an external power source, and the output terminal of the power supply module is connected to the servo motor 21 via a wire. Thus, the independent power supply module can regulate and filter the external power source, providing a stable operating voltage for the servo motor 21. This prevents fluctuations in the external power source from causing the servo motor 21 to rotate erratically or its torque to become unstable, ensuring the uniformity of the loosening action and the controllability of the torque, and further protecting the stratified liquid from interference.

[0047] In some other specific embodiments, the loosening assembly 2 also includes a switch 23, which is installed in the mounting cavity 10 and its operation button is exposed outside the housing 1. The switch 23 is connected in series in the line between the output terminal of the power supply module and the servo motor 21.

[0048] In this embodiment, there are two loosening components 2, which are symmetrically distributed along the center of the housing 1. Thus, the two loosening components 2, symmetrically distributed along the center of the housing 1, can simultaneously loosen the Luer caps of two catheter flushers, doubling the efficiency compared to a single-component device. This is particularly suitable for clinical or laboratory scenarios involving batch sample processing, reducing operation time.

[0049] The specific principle and usage of the Luer cap loosening device for catheter flushing provided in this embodiment are as follows:

[0050] 1. Remove the centrifuged tubing rinser and observe the radial outer surface morphology of the Luer cap to ensure it is free from deformation or damage;

[0051] 2. Align the Luer cap of the catheter flushing device with the loosening member 22 in the mounting hole 121 at the top of the housing 1, so that the Luer cap is embedded in the loosening groove 220 at the top of the sleeve 223, and the outer surface of the Luer cap is in close contact with the inner wall of the loosening groove 220 to ensure that there is no relative sliding during the subsequent loosening process.

[0052] 3. Adjust the orientation of the catheter flusher to keep the main body of the catheter flusher vertical, avoid lateral force due to tilting, and prevent disturbance of the internal stratified liquid when loosening;

[0053] 4. The operator holds the main body of the tubing flusher with one hand to keep it stable, and presses the operation button of the exposed switch 23 on the housing 1 with the other hand. After the servo motor 21 is started, its power output end drives the mounting plate 221 to rotate through the connecting plate 211. The mounting plate 221 transmits power to the sleeve 223 through the connecting bracket 222, so that the sleeve 223 drives the Luer cap to rotate at a stable angular velocity.

[0054] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A Luer cap loosening device suitable for catheter flushing devices, which, after the tip of the catheter flushing device is tightened and sealed by the Luer cap, can be used as a receiving device during the centrifugation process, characterized in that, include: The housing (1) has an internal mounting cavity (10) and the top of the housing (1) is horizontally arranged and has a mounting hole (121) communicating with the mounting cavity (10). The loosening assembly (2) includes a servo motor (21) and a loosening component (22). The fixed end of the servo motor (21) is fixedly connected to the side wall of the mounting cavity (10). The first end of the loosening component (22) is connected to the power output end of the servo motor (21). The second end of the loosening component (22) is located in the mounting hole (121) and is flush with the top of the housing (1). The second end of the loosening component (22) has a loosening groove (220) that corresponds to the radial outer surface of the Luer cap.

2. The Luer cap loosening device for a catheter flushing device according to claim 1, characterized in that, The loosening component (22) includes a mounting plate (221), a connecting frame (222), and a sleeve (223). The lower surface of the mounting plate (221) is detachably connected to the power output end of the servo motor (21). The bottom end of the connecting frame (222) is fixedly connected to the upper surface of the mounting plate (221). The sleeve (223) is located inside the mounting hole (121), and its top end is flush with the top end of the housing (1). The top end of the sleeve (223) has a loosening groove (220) that penetrates its inner cylinder surface. The outer cylinder surface of the sleeve (223) is fixedly connected to the top end of the connecting frame (222).

3. The Luer cap loosening device for a catheter flushing device according to claim 2, characterized in that, The number of connecting frames (222) is multiple and they are arranged in a uniform array along the circumference of the sleeve (223).

4. The Luer cap loosening device for a catheter flushing device according to claim 2, characterized in that, It also includes a connecting plate (211), which is fixedly connected to the power output end of the servo motor (21) and detachably connected to the lower surface of the mounting plate (221).

5. A Luer cap loosening device for a catheter flushing device according to claim 1, characterized in that, It also includes a mounting plate (13), which is fixedly connected to the side wall of the mounting cavity (10), and the fixed end of the servo motor (21) is fixedly connected to the mounting plate (13).

6. A Luer cap loosening device for a catheter flushing device according to claim 1, characterized in that, It also includes support legs (14), multiple support legs (14) are evenly supported at the bottom end of the housing (1), and all are detachably connected to the bottom end of the housing (1).

7. A Luer cap loosening device for a catheter flushing device according to claim 6, characterized in that, The support leg (14) includes a support column (141) and a suction cup (142). The top end of the support column (141) is detachably connected to the bottom end of the housing (1), and the suction cup (142) is fixedly connected to the bottom end of the support column (141).

8. A Luer cap loosening device for a catheter flushing device according to claim 1, characterized in that, It also includes a power supply module, the input end of which is connected to an external power source, and the output end of which is connected to the servo motor (21) via a wire.

9. A Luer cap loosening device for a catheter flushing device according to claim 8, characterized in that, The loosening assembly (2) also includes a switch (23), which is installed in the mounting cavity (10) and its operation button is exposed in the housing (1). The switch (23) is connected in series on the line between the output end of the power supply module and the servo motor (21).

10. A Luer cap loosening device for a catheter flushing device according to claim 1, characterized in that, The number of loosening components (2) is two, and they are symmetrically distributed along the center of the housing (1) on the side.

Images