Veterinary blood sampling device

Abstract

The utility model relates to blood sampling device technical field, concretely disclose a kind of veterinary blood sampling device, including outer tube, inner tube, sealing cover, needle, piston, sleeve, elastic member and outer thread pipe, the inner tube is set in the outer tube inside, the inner tube and outer tube axial one end are jointly connected on the sealing cover, the sealing cover is connected with needle, the inside sliding connection of the inner tube has piston, the piston is connected with push rod, the one end of push rod remote from the piston is connected with connecting block, the sleeve is sleeved in the inner tube outside, and the sleeve is fixed with the connecting block, the one end of the sleeve remote from the connecting block is connected with outer flange, the elastic member is located between the outer flange and the sealing cover, the one end of the outer tube remote from the sealing cover is formed with threaded portion, the outer thread pipe is threadedly connected in the threaded portion, the blood sampling device provided by the utility model can be single-handed quantitative extraction of blood, and it is easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of blood collection technology, and in particular to a veterinary blood collection device. Background Technology

[0002] Blood collection from common animals is typically done using syringes, but conventional syringes cannot be operated with one hand, resulting in low efficiency for small animals. To address this issue, patent CN206390914U provides a one-handed fish blood collection syringe. This syringe allows one hand to operate a rotating wheel to move the piston rod, thus drawing blood, while the other hand can be used to hold the fish still and prevent movement, improving efficiency. However, this syringe requires the thumb to push the rotating wheel during blood collection, which is inconvenient. To solve this problem, patent CN209091398U provides a veterinary sampling device that uses a spring to drive the piston, achieving automatic blood collection. However, this device places the spring inside the reservoir, which can contaminate the blood. Furthermore, since the spring drives the piston, after a certain amount of blood is drawn, the finger needs to continuously press on the piston rod to prevent the spring from returning to its original position, making it difficult to control. Summary of the Invention

[0003] To address the problems mentioned in the background art, the purpose of this utility model is to provide a veterinary blood collection device.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A veterinary blood collection device includes an outer tube, an inner tube, a sealing cap, a needle, a piston, a sleeve, an elastic element, and an externally threaded tube. The inner tube is disposed inside the outer tube. One axial end of the inner tube and the outer tube are connected to the sealing cap. The needle is connected to the sealing cap and communicates with the inner tube. A piston is slidably connected inside the inner tube. A push rod is connected to the end of the piston away from the needle. A connecting block larger than the inner tube is connected to the end of the push rod away from the piston. The sleeve is sleeved outside the inner tube, and one axial end of the sleeve is fixedly connected to the connecting block. An outer flange is connected to the end of the sleeve away from the connecting block. The elastic element abuts between the outer flange and the sealing cap. A threaded portion is formed at the end of the outer tube away from the sealing cap. The externally threaded tube is threaded into the threaded portion. The end of the externally threaded tube near the sealing cap can abut against the outer flange.

[0005] Furthermore, a strip-shaped hole is formed on the circumferential surface of the outer tube, the strip-shaped hole being perpendicular to the axis of the outer tube. Hinges are connected to both sides of the outer tube on the circumferential surface in the width direction of the strip-shaped hole. A lever is hinged to the two hinges through a shaft. When the piston abuts against the sealing cover, one end of the lever can abut against the outer flange and prevent the elastic element from resetting.

[0006] Furthermore, the elastic element is a spring, which is sleeved on the outside of the inner tube.

[0007] Furthermore, an inner flange is connected to one end of the externally threaded tube near the sealing cap, and the inner diameter of the inner flange is smaller than the outer diameter of the outer flange.

[0008] The beneficial effects of this utility model are as follows: the elastic element can drive the piston away from the sealing cap to achieve the extraction effect, and the elastic element is set outside the inner tube, so it will not contaminate the blood; the position of the external threaded tube can be adjusted to avoid the elastic element from completely resetting, thereby achieving the function of limiting the piston position after quantitative extraction. Attached Figure Description

[0009] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of an embodiment of the present utility model.

[0010] Explanation of the attached drawing numbers: 1. Outer tube, 11. Inner tube, 12. Sealing cap, 13. Threaded part, 14. Strip hole, 15. Hinge, 2. Needle, 3. Piston, 31. Push rod, 32. Connecting block, 33. Sleeve, 34. Outer flange, 4. Elastic element, 5. External threaded tube, 51. Inner flange, 6. Shaft, 7. Lever. Detailed Implementation

[0011] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0012] like Figures 1-2As shown, a veterinary blood collection device includes an outer tube 1, an inner tube 11, a sealing cap 12, a needle 2, a piston 3, a sleeve 33, an elastic element 4, and an externally threaded tube 5. The inner tube 11 is coaxially disposed inside the outer tube 1. The bottom ends of the inner tube 11 and the outer tube 1 are connected to the sealing cap 12. The bottom of the sealing cap 12 is connected to the needle 2, which is in communication with the inner tube 11. The piston 3 is slidably connected inside the inner tube 11. The top end of the piston 3 is connected to a push rod 31, and the top end of the push rod 31 is connected to a... A connecting block 32 with a size larger than the inner tube 11 is provided. A sleeve 33 is fitted outside the inner tube 11 and the top end of the sleeve 33 is fixedly connected to the connecting block 32. An outer flange 34 is connected to the bottom end of the sleeve 33. An elastic element 4 is abutted between the outer flange 34 and the sealing cover 12. Preferably, the elastic element 4 is a spring. The spring is fitted outside the inner tube 11. A threaded part 13 is provided at the top end of the outer tube 1. An external threaded tube 5 is threadedly connected inside the threaded part 13. The bottom end of the external threaded tube 5 can abut against the outer flange 34.

[0013] Before drawing blood, the position of the external threaded tube 5 needs to be adjusted in advance to control the amount of movement of the piston 3 and achieve the effect of quantitative extraction.

[0014] In this embodiment, a strip-shaped hole 14 is provided on the circumferential surface of the outer tube 1. The strip-shaped hole 14 is perpendicular to the axis of the outer tube 1. Hinges 15 are connected to both sides of the circumferential surface of the outer tube 1 in the width direction of the strip-shaped hole 14. A lever 7 is hinged to the two hinges 15 through a shaft 6. When the piston 3 abuts against the sealing cover 12, one end of the lever 7 can abut against the outer flange 34 and prevent the spring from returning to its original position. The lever 7 can avoid pressing the connecting block 32 by hand before drawing blood. When drawing blood, the spring can be released simply by moving the lever 7, which is more convenient.

[0015] In this embodiment, the end of the external threaded tube 5 near the sealing cap 12 is connected to an inner flange 51. The inner diameter of the inner flange 51 is smaller than the outer diameter of the outer flange 34, which can more stably restrict the position of the sleeve 33.

[0016] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A veterinary blood collection device, characterized in that, The device includes an outer tube (1), an inner tube (11), a sealing cap (12), a needle (2), a piston (3), a sleeve (33), an elastic element (4), and an externally threaded tube (5). The inner tube (11) is disposed inside the outer tube (1). One axial end of the inner tube (11) and the outer tube (1) are connected to the sealing cap (12). The needle (2) is connected to the sealing cap (12). The needle (2) is in communication with the inner tube (11). The piston (3) is slidably connected inside the inner tube (11). The end of the piston (3) away from the needle (2) is connected to a push rod (31). The end of the push rod (31) away from the piston (3) is connected to a dimensional... A connecting block (32) larger than the inner tube (11) is provided. The sleeve (33) is sleeved outside the inner tube (11) and one end of the sleeve (33) is fixedly connected to the connecting block (32) in the axial direction. An outer flange (34) is connected to the end of the sleeve (33) away from the connecting block (32). The elastic element (4) is abutted between the outer flange (34) and the sealing cover (12). A threaded part (13) is formed at the end of the outer tube (1) away from the sealing cover (12). The threaded tube (5) is threadedly connected to the threaded part (13). The end of the threaded tube (5) near the sealing cover (12) can abut against the outer flange (34).

2. The veterinary blood collection device according to claim 1, characterized in that, A strip hole (14) is provided on the circumferential surface of the outer tube (1). The strip hole (14) is perpendicular to the axis of the outer tube (1). Hinges (15) are connected to both sides of the strip hole (14) on the circumferential surface of the outer tube (1). A lever (7) is hinged to the two hinges (15) through a shaft (6). When the piston (3) abuts against the sealing cover (12), one end of the lever (7) can abut against the outer flange (34) and prevent the elastic element (4) from resetting.

3. The veterinary blood collection device according to claim 1, characterized in that, The elastic element (4) is a spring, which is sleeved on the outside of the inner tube (11).

4. The veterinary blood collection device according to claim 1, characterized in that, The external threaded tube (5) has an inner flange (51) connected to one end near the sealing cap (12), and the inner diameter of the inner flange (51) is smaller than the outer diameter of the outer flange (34).

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