A disposable infusion tube for indwelling needle

Abstract

The present invention discloses a disposable infusion tube dedicated to an indwelling needle, comprising an infusion tube, an infusion tube assembly is arranged on the outer surface of the infusion tube, an inner surface of the sealing cover is rotatably connected with a sealing pad at a position located at the right end of a top plug tube column, liquid outlets are provided at symmetrical positions of the top and bottom of the right end of the top plug tube column near the disinfection sealing pad, a disinfection cotton pad is arranged on the left side of the inner surface of the right end of the sealing cover, and a sealing plug is arranged on the right end of the sealing cover; the present invention unscrews the sealing cover, tears off the sealing film attached to the right end of the top plug tube column, presses the right end of the top plug tube column against the one-way valve in the infusion interface of the indwelling needle, pinches the indwelling needle connecting seat with fingers to press and rotate it, so that the inner surface of the indwelling needle connecting seat is meshed with the thread arranged on the outer surface of the indwelling needle, and reaches a state where the indwelling needle connecting seat and the indwelling needle are locked, thereby completing the matching of the indwelling needle and the infusion device, and effectively solving the problems in the background technology.

Description

Technical Field

[0001] The invention relates to the field of medical devices, in particular to a disposable infusion tube dedicated to an indwelling needle. Background Art

[0002] In clinical practice, intravenous infusion sets are one of the main means of clinical rescue and treatment of patients. At present, the most commonly used infusion method in clinical practice is the steel needle infusion set. In the past five years, the indwelling needle has been welcomed by nurses and patients because it does not require repeated injections. When the products of domestic and foreign manufacturers are used in clinical practice, an external infusion set is required to truly realize the infusion process.

[0003] However, due to the complexity and large number of infusion set manufacturers, different hospitals purchase and use indwelling needles and infusion sets from different manufacturers. The products of two different manufacturers often cannot be fully matched during the docking process, and there is a risk of leakage or even connection loss during the infusion process. In addition, there is no standard infusion set that matches various indwelling needles in clinical practice, which makes the nurses' work cumbersome and easily causes the risk of needle injuries to nurses. Summary of the invention

[0004] The main purpose of the present invention is to provide a disposable infusion tube for an indwelling needle, so as to solve the problems existing in the prior art.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A disposable infusion tube for indwelling needles comprises an infusion tube, an infusion tube assembly is arranged on the outer surface of the infusion tube, an indwelling needle connecting seat is arranged at the end of the infusion tube in communication with the indwelling needle connecting seat, a top plug column is arranged at the middle position on the left side of the inner surface of the indwelling needle connecting seat, a sealing cover is threadedly connected to the inner surface of the indwelling needle connecting seat, a sealing gasket is rotatably connected to the inner surface of the sealing cover at the position of the right end of the top plug column, liquid outlets are arranged at the symmetrical positions of the top and bottom of the right end of the top plug column near the disinfection sealing gasket, the shape of the disinfection sealing gasket near the side of the top plug column matches the shape of the right end of the top plug column, a sealing film is attached to the right end of the top plug column, the sealing film extends to the middle position of the outer surface of the top plug column, the diameter of the left side of the outer surface of the top plug column matches the inner diameter of the indwelling needle infusion interface, the thread arranged on the inner surface of the indwelling needle connecting seat matches the thread arranged on the outer surface of the indwelling needle, a disinfection cotton pad is arranged on the left side of the inner surface of the right end of the sealing cover, and a sealing plug is arranged at the right end of the sealing cover.

[0007] Furthermore, a sealing rubber pad is sleeved on the outer surface of the plug column at the bottom of the inner surface of the indwelling needle connecting seat.

[0008] Furthermore, a limiting ring is provided on the inner surface of the sealing cover near the right end of the sealing cover, and the limiting ring is slidably connected to the outer surface of the disinfection sealing pad in a groove provided on the limiting ring.

[0009] Furthermore, the diameter of the left end of the plugging tube column is greater than the diameter of the right end of the plugging tube column.

[0010] Working principle and beneficial effects: When in use, unscrew the sealing cover, tear off the sealing film attached to the right end of the top plug column, push the right end of the top plug column against the one-way valve in the indwelling needle infusion interface, pinch the indwelling needle connector with fingers, press and rotate, so that the inner surface of the indwelling needle connector is engaged with the thread set on the outer surface of the indwelling needle, and the indwelling needle connector and the indwelling needle are locked, so that the indwelling needle and the infusion set are matched, and the top and bottom of the right end of the top plug column are symmetrically located near the disinfection sealing pad, which can fully ensure that the liquid can flow from the infusion tube, the inner surface of the top plug column on the indwelling needle connector through the liquid outlet into the indwelling needle completely and unimpeded during infusion, ensuring the smoothness of the infusion;

[0011] (1) A sealing rubber pad is sleeved on the outer surface of the plugging tube column at the bottom of the inner surface of the indwelling needle connector, which ensures the sealing of the space formed by the plugging tube column, the sealing cover and the sealing rubber pad when the sealing cover is matched with the indwelling needle connector, and can also avoid leakage at the interface when the indwelling needle connector is matched with the indwelling needle;

[0012] (2) A sealing film is attached to the right end of the plugging tube column, and the sealing film extends to the middle position of the outer surface of the plugging tube column. The function of the sealing film is to prevent the sealing cover from fitting loosely with the indwelling needle connector, thereby preventing the infusion tube from being contaminated;

[0013] (3) A sterile cotton pad is provided on the left side of the inner surface of the right end of the sealing cover, and a sealing plug is provided on the right end of the sealing cover. Before the indwelling needle connecting seat is matched with the indwelling needle, the infusion interface of the indwelling needle needs to be sterilized. After the sealing plug is pulled out, the infusion interface of the indwelling needle is contacted with the sterile cotton pad and rotated to complete the sterilization. This makes it convenient for nurses to sterilize, and also saves the time wasted when the nurse forgets to bring the sterile cotton and needs to take it again.

[0014] (4) Overcoming the risks of leakage and disconnection caused by mismatch between the indwelling needle and the infusion set;

[0015] (6) It reduces the medical waste caused by discarding steel needle infusion sets when connecting with indwelling needles, avoids stabbing injuries, saves resources, and effectively protects the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic cross-sectional view of the main structure of the present invention;

[0017] Figure 2 It is a schematic diagram of the side view structure of the disinfection sealing pad of the present invention;

[0018] Figure 3 It is a partial cross-sectional schematic diagram of the main structure of the disinfection sealing pad of the present invention;

[0019] Figure 4 It is a schematic diagram of the front view structure of the top plugging column of the present invention.

[0020] In the figure: 1. infusion tube; 2. indwelling needle connector; 3. plugging tube column; 4. sealing cover; 5. sterile sealing pad; 6. liquid outlet; 7. sealing rubber pad; 8. limiting ring; 9. sterile cotton pad; 10. sealing plug. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Reference Figures 1 to 4 As shown, a disposable infusion tube for indwelling needle comprises an infusion tube 1, an infusion tube assembly is arranged on the outer surface of the infusion tube 1, an indwelling needle connecting seat 2 is connected to the end of the infusion tube 1, a top plug column 3 is arranged at the middle position on the left side of the inner surface of the indwelling needle connecting seat 2, a sealing cover 4 is threadedly connected to the inner surface of the indwelling needle connecting seat 2, the inner surface of the sealing cover 4 is located at the right end of the top plug column 3 and is rotatably connected to a sealing gasket 5, liquid outlets 6 are provided at the top and bottom of the right end of the top plug column 3 at symmetrical positions near the disinfection sealing gasket 5, the shape of the disinfection sealing gasket 5 near one side of the top plug column 3 matches the shape of the right end of the top plug column 3, a sealing film is attached to the right end of the top plug column 3, the sealing film extends to the middle position of the outer surface of the top plug column 3, the diameter of the left side of the outer surface of the top plug column 3 matches the inner diameter of the indwelling needle infusion interface, the thread arranged on the inner surface of the indwelling needle connecting seat 2 matches the thread arranged on the outer surface of the indwelling needle, a disinfection cotton pad 9 is arranged on the left side of the inner surface of the right end of the sealing cover 4, and a sealing plug 10 is arranged on the right end of the sealing cover 4.

[0023] The present invention provides a disposable infusion tube specially used for an indwelling needle. The sealing cover 4 is unscrewed, the sealing film attached to the right end of the top plug column 3 is torn off, the right end of the top plug column 3 is pressed against the one-way valve in the infusion interface of the indwelling needle, and the indwelling needle connecting seat 2 is pinched and pressed and rotated by fingers, so that the inner surface of the indwelling needle connecting seat 2 is engaged with the thread set on the outer surface of the indwelling needle, and the indwelling needle connecting seat 2 is locked with the indwelling needle, thereby completing the matching of the indwelling needle and the infusion set.

[0024] Among them, a sealing rubber pad 7 is sleeved on the outer surface of the plug column 3 at the bottom of the inner surface of the indwelling needle connecting seat 2, which ensures the sealing of the space formed by the plug column, the sealing cover and the sealing rubber pad when the sealing cover is matched with the indwelling needle connecting seat, and can also avoid leakage at the interface when the indwelling needle connecting seat is matched with the indwelling needle.

[0025] Among them, a limiting ring 8 is provided on the inner surface of the sealing cover 4 near the right end of the sealing cover 4, and the limiting ring 8 and the outer surface of the disinfection sealing pad 5 are slidingly connected in the groove provided in the limiting ring 8, ensuring that when the sealing cover is matched with the indwelling needle connecting seat, the disinfection sealing pad rotates together with the top plug column.

[0026] Among them, the diameter of the left end of the plug column 3 is greater than the diameter of the right end of the plug column 3, which facilitates the cooperation between the indwelling needle connecting seat and the indwelling needle to ensure that it is compatible with at least two indwelling needles of different specifications.

Claims

1. A disposable infusion tube for an indwelling needle, comprising an infusion tube (1), wherein an infusion tube assembly is provided on the outer surface of the infusion tube (1), characterized in that: The end of the infusion tube (1) is connected to an indwelling needle connection seat (2); a plugging tube column (3) is provided at the middle position on the left side of the inner surface of the indwelling needle connection seat (2); a sealing cover (4) is threadedly connected to the inner surface of the indwelling needle connection seat (2); a disinfection sealing pad (5) is rotatably connected to the inner surface of the sealing cover (4) at a position located at the right end of the plugging tube column (3); liquid outlets (6) are provided at symmetrical positions of the top and bottom of the right end of the plugging tube column (3) near the disinfection sealing pad (5); the disinfection sealing pad (5) is close to the plugging tube column (3) and the plugging tube column (3) is connected to the inner surface of the sealing cover (4) by a threaded connection. ) matches the shape of the right end of the plugging tube column (3); a sealing film is attached to the right end of the plugging tube column (3); the sealing film extends to the middle position of the outer surface of the plugging tube column (3); the left diameter of the outer surface of the plugging tube column (3) matches the inner diameter of the indwelling needle infusion interface; the thread provided on the inner surface of the indwelling needle connecting seat (2) matches the thread provided on the outer surface of the indwelling needle; a sterile cotton pad (9) is provided on the left side of the inner surface of the right end of the sealing cover (4), and a sealing plug (10) is provided on the right end of the sealing cover (4); The outer surface of the plugging tube column (3) is sleeved with a sealing rubber pad (7) at a position located at the bottom of the inner surface of the indwelling needle connecting seat (2); A limiting ring (8) is provided on the inner surface of the sealing cover (4) near the right end of the sealing cover (4); the limiting ring (8) is slidably connected to the outer surface of the disinfection sealing pad (5) in a groove provided on the limiting ring (8); The diameter of the left end of the plugging pipe column (3) is greater than the diameter of the right end of the plugging pipe column (3).

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