Pressure-resistant anti-backflow infusion pipeline

Abstract

The utility model discloses a pressure-resistant anti-backflow infusion pipeline, which belongs to the technical field of medical instruments and comprises a lock catch joint communicated with the infusion pipeline, the left end and the right end of the lock catch joint are respectively communicated with an end cap and a conduit, the other end of one conduit is communicated with a female joint, and the other end of the other conduit is communicated with a male joint. Wherein the outer wall of one guide pipe is movably connected with a clamping piece, the other end of the female connector is communicated with a shell, the upper end and the lower end of the shell are connected with a male connector upper cover and a female connector lower cover respectively, one side of the female connector lower cover is communicated with a needleless connector, and the interior of the shell is movably connected with a sealing gasket. A protruding block is formed in the shell and makes contact with the sealing gasket in an attached mode. According to the utility model, the cutoff assembly is integrated in the shell, so that the inconvenience that a nurse needs to free hands to clamp an infusion tube by using a clamping block to cut off the infusion tube during cutoff is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a pressure-resistant and backflow-proof infusion pipeline. Background Art

[0002] Infusion refers to a large dose of injection introduced into the body by intravenous drip. It is a branch of injection and is widely used in clinical medicine.

[0003] During infusion puncture and when the infusion is about to end, the positive pressure in the intravenous needle end pipeline will decrease, which may cause medium backflow. In actual operation, after the medical staff connects the drug through the needle-free connector, if they need to cut off the flow of the drug liquid, they need to get up and find the clip to cut off the flow of the drug liquid through the clip. The clip may not completely cut off the flow, which is very inconvenient. Utility Model Content

[0004] In view of the deficiencies of the prior art, the present invention provides a pressure-resistant and backflow-proof infusion pipeline, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A pressure-resistant and backflow-proof infusion pipeline, comprising a locking joint connected to the infusion pipeline, wherein the left and right ends of the locking joint are respectively connected with an end cap and a catheter, the other end of one of the catheters is connected with a female joint, the outer wall of one of the catheters is movably connected with a clip, the other end of the female joint is connected with a shell, the upper and lower ends of the shell are respectively connected with a male interface upper cover and a female interface lower cover, one side of the female interface lower cover is connected with a needle-free joint, the interior of the shell is movably connected with a sealing gasket, a raised block is formed inside the shell, the raised block is in contact with the sealing gasket, and the interior of the shell is provided with a A cut-off assembly is provided, which includes a fixed block, which is arranged inside the shell, and the fixed block is fixedly connected to the inside of the shell, a sliding rod is provided in the middle of the fixed block, and the fixed block and the sliding rod are slidably connected, the sliding rod passes through the fixed block, and the interior of the shell and the fixed block form a guide hole, the shell and the sealing gasket form a lower chamber one and a lower chamber two, the outer wall of the sliding rod is fixedly connected to a shift rod, and the shift rod respectively passes through the fixed block and the shell and extends to the outside, the outer wall of the shell is provided with an L-shaped groove for cooperating with the shift rod, and the end of the shift rod is fixedly connected to a swivel.

[0007] The medium flows into the shell through the needle-free connector and circulates from the lower cover of the female interface to the upper cover of the male interface. A sealing gasket is installed inside the shell. When the medium flows normally, the flowing medium flows into the guide hole through the lower chamber formed by the sealing gasket and the raised block, and then flows out from the guide hole to between other components. When the medium flows back, the sealing gasket blocks the second lower chamber under the pressure of the medium. At this time, the medium cannot flow back. When it is necessary to cut off the flow of the medium, the rotating ring is pressed down, and the rotating ring drives the lever to move in the L-shaped groove. At this time, the lever drives the slide rod to slide, and the slide rod presses the sealing gasket down to block the second lower chamber. At this time, the medium cannot flow in, and the rotating ring is rotated to one side of the L-shaped groove to limit the slide rod, thereby achieving the effect of cutting off the flow. By arranging a cut-off component inside the shell, there is no need to use an additional clip to cut off the flow of the medium, which improves the convenience of nursing staff when using the device.

[0008] As a preferred technical solution of the present invention, the end of the other catheter is connected to a pressure detection device.

[0009] The pressure detection device is used to ensure that the pressure during the infusion process is within a safe range. Excessive pressure may cause the infusion rate to be too fast, causing discomfort or injury to the patient; too low pressure may indicate that the infusion is obstructed.

[0010] The beneficial effects of the present invention are as follows: by integrating the cut-off component in the shell, there is no need to use additional clips to cut off the flow of the medium, thereby improving the convenience of nursing staff when using the device.

[0011] The utility model ensures that the pressure during the infusion process is within a safe range through the pressure detection device, thereby avoiding discomfort or injury to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the connection structure of the one-way valve and the needle-free connector of the utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the shell of the present utility model;

[0015] Figure 4 This is an enlarged structural diagram of the internal cut-off assembly of the shell of the utility model;

[0016] Figure 5 It is a schematic diagram of the partial structure of the cut-off component of the utility model.

[0017] In the figure: 1. End cap; 2. Locking connector; 3. Catheter; 4. Clip; 5. Female connector; 6. Housing; 601. Male connector upper cover; 602. Female connector lower cover; 603. Sealing gasket; 604. Raised block; 7. Needleless connector; 8. Pressure detection device; 9. Cut-off assembly; 901. Sliding rod; 902. Fixed block; 903. Lower chamber one; 904. Lever; 905. Rotating ring; 906. Diversion hole; 907. Lower chamber two. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figures 1 to 5 , this preferred embodiment provides a pressure-resistant and backflow-proof infusion pipeline, including a locking connector 2 connected to the infusion pipeline, wherein the left and right ends of the locking connector 2 are respectively connected with an end cap 1 and a catheter 3, the other end of one of the catheters 3 is connected with a female connector 5, the outer wall of one of the catheters 3 is movably connected with a clip 4, the other end of the female connector 5 is connected with a shell 6, the upper and lower ends of the shell 6 are respectively connected with a male interface upper cover 601 and a female interface lower cover 602, one side of the female interface lower cover 602 is connected with a needle-free connector 7, the interior of the shell 6 is movably connected with a sealing gasket 603, a protruding block 604 is formed inside the shell 6, the protruding block 604 is in contact with the sealing gasket 603, and a flow-blocking component 9 is provided inside the shell 6, the flow-blocking component Component 9 includes a fixed block 902, which is arranged inside the shell 6. The fixed block 902 is fixedly connected to the inside of the shell 6. A sliding rod 901 is provided in the middle of the fixed block 902. The fixed block 902 is slidably connected to the sliding rod 901. The sliding rod 901 passes through the fixed block 902. A guide hole 906 is formed in the interior of the shell 6 and the fixed block 902. The shell 6 and the sealing gasket 603 form a lower chamber 1 903 and a lower chamber 2 907. The outer wall of the sliding rod 901 is fixedly connected to a shift rod 904. The shift rod 904 passes through the fixed block 902 and the shell 6 respectively and extends to the outside. The outer wall of the shell 6 is provided with an L-shaped groove for cooperating with the shift rod 904. The end of the shift rod 904 is fixedly connected to a swivel 905.

[0020] The medium flows into the housing 6 through the needleless connector 7, and flows from the female interface lower cover 602 to the male interface upper cover 601. A sealing gasket 603 is installed inside the housing 6. When the medium flows normally, the flowing medium flows into the guide hole 906 through the lower chamber formed by the sealing gasket 603 and the protruding block 604, and then flows out from the guide hole 906 to other components. When the medium flows back, the sealing gasket 603 blocks the lower chamber 907 under the pressure of the medium. At this time, the medium cannot flow back. When the medium needs to be cut off When the medium flows, the rotating ring 905 is pressed down, and the rotating ring 905 drives the lever 904 to move in the L-shaped groove. At this time, the lever 904 drives the slide bar 901 to slide, and the slide bar 901 presses the sealing gasket 603 down to block the lower chamber 2 907. At this time, the medium cannot flow in, and the rotating ring 905 is rotated to one side of the L-shaped groove to limit the slide bar 901, thereby achieving the effect of cutting off the flow. By arranging the cut-off component 9 inside the shell 6, there is no need to use the clip 4 to cut off the flow of the medium, which improves the convenience of the nursing staff when using the device.

[0021] See also Figure 1 In this embodiment, the end of the other conduit 3 is connected to a pressure detection device 8 .

[0022] The pressure detection device 8 ensures that the pressure during the infusion process is within a safe range. Too high a pressure may cause the infusion rate to be too fast, causing discomfort or injury to the patient; too low a pressure may indicate that the infusion is blocked.

[0023] Working principle: The medium flows into the housing 6 through the needleless connector 7, and flows from the female interface lower cover 602 to the male interface upper cover 601. A sealing gasket 603 is installed inside the housing 6. When the medium flows normally, the flowing medium flows into the guide hole 906 through the lower chamber formed by the sealing gasket 603 and the protruding block 604, and then flows out from the guide hole 906 to other components. When the medium flows back, the sealing gasket 603 blocks the lower chamber 907 under the pressure of the medium, and the medium cannot flow back at this time. When it is necessary to cut off the flow of the medium, press down the swivel 905 The rotating ring 905 drives the lever 904 to move in the L-shaped groove. At this time, the lever 904 drives the slide bar 901 to slide. The slide bar 901 presses the sealing gasket 603 downward to block the lower chamber 2 907. At this time, the medium cannot flow in. The rotating ring 905 is rotated to one side of the L-shaped groove to limit the slide bar 901, thereby achieving the effect of cutting off the flow. By arranging the cut-off component 9 inside the shell 6, there is no need to use the clip 4 to cut off the flow of the medium, which improves the convenience of the nursing staff when using the device. The pressure detection device 8 ensures that the pressure during the infusion process is within a safe range.

[0024] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pressure-resistant and anti-backflow infusion pipeline, comprising a locking connector (2) connected to the infusion pipeline, characterized in that: The left and right ends of the locking joint (2) are respectively connected to the end cap (1) and the conduit (3); the other end of one of the conduits (3) is connected to the female joint (5); the other end of the female joint (5) is connected to the housing (6); the upper and lower ends of the housing (6) are respectively connected to the male interface upper cover (601) and the female interface lower cover (602); the interior of the housing (6) is movably connected to a sealing gasket (603); a protruding block (604) is formed inside the housing (6); the protruding block (604) is in contact with the sealing gasket (603); and a cut-off component (9) is provided inside the housing (6); The shut-off assembly (9) includes a fixed block (902), which is arranged inside the shell (6). A sliding rod (901) is provided in the middle of the fixed block (902), and the sliding rod (901) passes through the fixed block (902). A guide hole (906) is formed between the interior of the shell (6) and the fixed block (902). The shell (6) and the sealing gasket (603) form a lower chamber 1 (903) and a lower chamber 2 (907). The outer wall of the sliding rod (901) is fixedly connected to a shift rod (904), and the shift rod (904) passes through the fixed block (902) and the shell (6) respectively and extends to the outside. The outer wall of the shell (6) is provided with an L-shaped groove used in conjunction with the shift rod.

2. The pressure-resistant and anti-backflow infusion pipeline according to claim 1, characterized in that: The end of the other of the conduits (3) is connected to a pressure detection device (8).

3. The pressure-resistant and anti-backflow infusion pipeline according to claim 1, characterized in that: The fixing block (902) is fixedly connected to the interior of the housing (6).

4. The pressure-resistant and anti-backflow infusion pipeline according to claim 1, characterized in that: The fixed block (902) and the sliding rod (901) are slidably connected.

5. The pressure-resistant and anti-backflow infusion pipeline according to claim 1, characterized in that: The outer wall of one of the conduits (3) is movably connected with a clip (4).

6. The pressure-resistant and anti-backflow infusion pipeline according to claim 1, characterized in that: One side of the female interface lower cover (602) is connected to a needleless connector (7).

7. The pressure-resistant and anti-backflow infusion pipeline according to claim 1, characterized in that: The end of the shifting rod (904) is fixedly connected to a rotating ring (905).

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