Heparin sodium pre-flushing pipe

Abstract

The utility model discloses a heparin sodium pre-flushing tube, which comprises an injector outer cylinder, a middle cylinder and a push rod, the injector outer cylinder is provided with a first accommodating cavity, the middle cylinder is slidably and hermetically connected with the first accommodating cavity, the middle cylinder is provided with a second accommodating cavity, and the push rod is slidably and hermetically connected with the second accommodating cavity. The sliding direction of the middle cylinder and the sliding direction of the push rod are parallel to the axis direction of the syringe outer cylinder. The middle cylinder is provided with a through hole for communicating the second containing cavity with the first containing cavity, a sealing assembly for opening or sealing the through hole is arranged between the middle cylinder and the push rod, normal saline is arranged in the first containing cavity, and heparin sodium is arranged in the second containing cavity. The heparin sodium pre-flushing tube is reasonable in design and convenient to operate, the workload of medical staff is reduced, and meanwhile waste of heparin sodium normal saline is avoided.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a heparin sodium pre-flushing tube. Background Art

[0002] After the infusion is completed, the blood in the central venous catheter will easily flow back into the catheter and coagulate and block the catheter. Therefore, after the infusion is completed, the catheter needs to be sealed with a liquid containing an anticoagulant to prevent blood from flowing back and blocking the catheter. In clinical practice, physiological saline and sodium heparin are usually used in a certain proportion and are prepared on demand.

[0003] Commonly used sealing fluid consists of 0.9% saline and heparin sodium. After the two are mixed, they must be used within 24 hours, otherwise they will become ineffective. Therefore, clinical practice always prepares them on the spot, and then extracts 15ml of them for sealing, and the rest of the heparin sodium saline is wasted, which makes clinical operation cumbersome.

[0004] Therefore, it is necessary to improve the heparin sodium pre-flushing tube in the prior art. Utility Model Content

[0005] The utility model aims to overcome the defects in the prior art and provide a sodium heparin pre-flushing tube, which is easy to operate, reduces the workload of medical staff, and also avoids the waste of sodium heparin saline.

[0006] To achieve the above technical effects, the technical solution of the utility model is: a sodium heparin pre-flushing tube, comprising a syringe outer cylinder, a middle cylinder and a push rod, the syringe outer cylinder is provided with a first accommodating chamber, the middle cylinder is slidably and sealedly connected to the first accommodating chamber, the middle cylinder is provided with a second accommodating chamber, the push rod is slidably and sealedly connected to the second accommodating chamber, the sliding direction of the middle cylinder and the push rod is parallel to the axial centerline direction of the syringe outer cylinder; the middle cylinder is provided with a through hole connecting the second accommodating chamber with the first accommodating chamber, a sealing component for opening or sealing the through hole is provided between the middle cylinder and the push rod, the first accommodating chamber is provided with physiological saline, and the second accommodating chamber is provided with sodium heparin.

[0007] A preferred technical solution is that the sealing assembly includes a sealing rod connected to the push rod, and the sealing rod is slidably and sealingly connected to the through hole.

[0008] A preferred technical solution is that a sealing plug that slides and seals with the second accommodating cavity is fixedly provided at the end of the push rod, and the sealing rod is connected to the sealing plug.

[0009] A preferred technical solution is that the sealing rod is slidably connected to the sealing plug, and the sealing plug is provided with a first cavity for accommodating the sealing rod.

[0010] A preferred technical solution is that the sealing plug is rotatably connected to the second accommodating chamber, and the axial centerline direction of the rotation axis of the sealing plug is parallel to the axial centerline direction of the outer barrel of the syringe.

[0011] A preferred technical solution is that the sealing rod is provided with a plurality of rod body units which are slidably connected to each other, and the rod body unit is provided with a second cavity.

[0012] A preferred technical solution is that the liquid outlet of the outer barrel of the syringe is detachably provided with a sealing cover.

[0013] A preferred technical solution is that a limiting convex ring is provided between the first cavity and the sealing rod to prevent the sealing rod from being separated from the first cavity.

[0014] The advantages and beneficial effects of the utility model are as follows: the sodium heparin pre-flushing tube of the utility model has a reasonable structure, and the outer cylinder and the middle cylinder of the syringe are arranged, and the physiological saline and the sodium heparin are arranged in the first accommodating chamber and the second accommodating chamber respectively; in the initial state, the sealing component seals the through hole to isolate the physiological saline and the sodium heparin; before use, the through hole is opened to mix the physiological saline and the sodium heparin; the operation is convenient, and the workload of medical staff is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of an embodiment of the sodium heparin pre-flushing tube of the utility model;

[0016] Figure 2 yes Figure 1 Explosion diagram of

[0017] Figure 3 yes Figure 1 A cross-sectional view of

[0018] Figure 4 yes Figure 2 A cross-sectional view of

[0019] In the figure: 1. outer tube of syringe; 11. first accommodating chamber; 2. middle tube; 21. second accommodating chamber; 22. through hole; 3. push rod; 31. sealing plug; 32. first cavity; 33. limiting convex ring; 4. sealing rod; 41. rod body unit; 42. second cavity; 5. sealing cover. DETAILED DESCRIPTION

[0020] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "horizontal", "vertical", "top", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Example

[0022] like Figure 1-4 As shown, the sodium heparin pre-flushing tube of the embodiment comprises a syringe outer cylinder 1, a middle cylinder 2 and a push rod 3, the syringe outer cylinder 1 is provided with a first accommodating chamber 11, the middle cylinder 2 is slidably and sealedly connected to the first accommodating chamber 11, the middle cylinder 2 is provided with a second accommodating chamber 21, the push rod 3 is slidably and sealedly connected to the second accommodating chamber 21, and the sliding directions of the middle cylinder 2 and the push rod 3 are parallel to the axial centerline direction of the syringe outer cylinder 1; the middle cylinder 2 is provided with a through hole 22 connecting the second accommodating chamber 21 with the first accommodating chamber 11, a sealing component for opening or sealing the through hole 22 is provided between the middle cylinder 2 and the push rod 3, the first accommodating chamber 11 is provided with physiological saline, and the second accommodating chamber 21 is provided with sodium heparin.

[0023] With such a design, in the initial state, the physiological saline and sodium heparin are respectively located in the first accommodating chamber 11 and the second accommodating chamber 21 and are blocked by the sealing component; when the physiological saline and sodium heparin need to be mixed, the through hole 22 is opened to mix the two, which is convenient to use.

[0024] Specifically, the sealing assembly includes a sealing rod 4 connected to the push rod 3 , and the sealing rod 4 is slidably and sealingly connected to the through hole 22 .

[0025] Through such a design, the purpose of sealing or opening the through hole 22 is achieved.

[0026] Specifically, a sealing plug 31 that slides and seals with the second accommodating cavity 21 is fixedly provided at the end of the push rod 3 , and the sealing rod 4 is connected to the sealing plug 31 .

[0027] Specifically, the sealing rod 4 is slidably connected to the sealing plug 31 , and the sealing plug 31 is provided with a first cavity 32 for accommodating the sealing rod 4 .

[0028] With such a design, by pulling up the push rod 3, the sealing rod 4 is disengaged from the through hole 22, the through hole 22 is unblocked, and the physiological saline is drawn from the first accommodating chamber 11 into the second accommodating chamber 21 to mix with the heparin sodium; when the two are fully mixed, the push rod 3 is rotated to displace the axis of the sealing rod 4 and the axis of the through hole 22, and the push rod 3 is pushed down to push the mixed liquid in the second accommodating chamber 21 into the first accommodating chamber 11, and the sealing rod 4 is retracted into the first cavity 32, and the sealing plug 31 is abutted against the end of the through hole 22, thereby avoiding the phenomenon of the mixed liquid remaining in the second accommodating chamber 21.

[0029] Specifically, the sealing plug 31 is rotatably connected to the second accommodating chamber 21 , and the axis centerline direction of the rotation axis of the sealing plug 31 is parallel to the axis centerline direction of the syringe outer barrel 1 .

[0030] Specifically, the sealing rod 4 is provided with a plurality of rod body units 41 which are slidably connected to each other, and the rod body unit 41 is provided with a second cavity 42 .

[0031] With such a design, the length of the sealing rod 4 ensures that the capacity of sodium heparin in the second accommodating chamber 21 meets the standard, while preventing the sealing plug 31 from being too thick.

[0032] Specifically, the liquid outlet of the outer barrel 1 of the syringe is detachably provided with a sealing cover 5 .

[0033] This design facilitates the mixing of normal saline and heparin sodium.

[0034] Specifically, a limiting convex ring 33 is provided between the first cavity 32 and the sealing rod 4 to prevent the sealing rod 4 from being separated from the first cavity 32 .

[0035] Such a design can prevent the sealing rod 4 from falling off.

[0036] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A heparin sodium pre-flushing tube, characterized in that: The invention comprises an outer barrel (1), a middle barrel (2) and a push rod (3), wherein the outer barrel (1) of the syringe is provided with a first accommodating chamber (11), the middle barrel (2) is slidably and sealedly connected to the first accommodating chamber (11), the middle barrel (2) is provided with a second accommodating chamber (21), the push rod (3) is slidably and sealedly connected to the second accommodating chamber (21), and the sliding direction of the middle barrel (2) and the push rod (3) is parallel to the axial centerline direction of the outer barrel (1) of the syringe; the middle barrel (2) is provided with a through hole (22) for connecting the second accommodating chamber (21) with the first accommodating chamber (11), and a sealing component for opening or sealing the through hole (22) is provided between the middle barrel (2) and the push rod (3); the first accommodating chamber (11) is provided with physiological saline, and the second accommodating chamber (21) is provided with heparin sodium.

2. The heparin sodium pre-flushing tube according to claim 1, characterized in that: The sealing assembly comprises a sealing rod (4) connected to the push rod (3); the sealing rod (4) is slidably and sealingly connected to the through hole (22).

3. The heparin sodium pre-flushing tube according to claim 2, characterized in that: A sealing plug (31) is fixedly provided at the end of the push rod (3) and is slidably and sealingly matched with the second accommodating cavity (21), and the sealing rod (4) is connected to the sealing plug (31).

4. The heparin sodium pre-flushing tube according to claim 3, characterized in that: The sealing rod (4) is slidably connected to the sealing plug (31), and the sealing plug (31) is provided with a first cavity (32) for accommodating the sealing rod (4).

5. The heparin sodium pre-flushing tube according to claim 4, characterized in that: The sealing plug (31) is rotatably connected to the second accommodating chamber (21), and the axis centerline direction of the rotation axis of the sealing plug (31) is parallel to the axis centerline direction of the syringe outer barrel (1).

6. The heparin sodium pre-flushing tube according to claim 4, characterized in that: The sealing rod (4) is provided with a plurality of rod body units (41) that are slidably connected to each other, and the rod body unit (41) is provided with a second cavity (42).

7. The heparin sodium pre-flushing tube according to claim 1, characterized in that: The liquid outlet of the outer barrel (1) of the syringe is detachably provided with a sealing cover (5).

8. The heparin sodium pre-flushing tube according to claim 4, characterized in that: A limiting convex ring (33) is provided between the first cavity (32) and the sealing rod (4) to prevent the sealing rod (4) from being separated from the first cavity (32).

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