Catheter sealing cap for preventing catheter infection

Abstract

The invention discloses a catheter sealing cap for preventing catheter infection, belongs to the technical field of catheters, and aims to solve the problems that in the catheter indwelling process, bacteria move towards a catheter opening along the outer wall of a catheter, and when the catheter sealing cap is separated from the catheter, the bacteria move upwards to the catheter opening along with the movement of the catheter sealing cap, and intracavity pollution is caused. A liquid storage tank is fixedly installed in the pipe sealing cap body, a fixing column is fixedly installed on one side of the liquid storage tank, a first button is slidably connected to one end of the pipe sealing cap body, three first elastic rods are fixedly installed on one side of the first button, and the three first elastic rods are connected to one side of the pipe sealing cap body and one side of the liquid storage tank in a penetrating mode. According to the catheter sealing cap, the surface of a catheter can be sterilized and disinfected, the situation that bacteria move towards a catheter opening along the outer wall of the catheter, and intracavity infection is likely to be caused is prevented, and the wiping pieces can be used for sterilizing and disinfecting the surface, close to the end of the catheter sealing cap body, of the catheter; the tube sealing cap body is prevented from driving bacteria to upwards migrate to the catheter opening.

Description

Technical Field

[0001] The invention relates to the technical field of catheters, in particular to a sealing cap for preventing catheter infection. Background Art

[0002] For patients undergoing hemodialysis, long-term central venous catheters are a lifeline. Central venous catheters are extremely susceptible to intraluminal infection. The mechanism of infection is primarily due to Staphylococcus epidermidis from the skin attaching to the catheter opening and migrating into the lumen to form colonies. This infection, if present during subsequent hemodialysis sessions, can easily lead to fatal complications such as bacteremia, leukemia, lung abscesses, and infective endocarditis. Treatment is primarily focused on prevention, requiring enhanced disinfection of the skin and catheter opening. In the event of infection, the catheter must be removed or replaced at the original location, placing a significant financial burden on patients and national health insurance. The cap, a key protective component at the end of the catheter, has the core function of sealing the catheter interface and blocking the intrusion of external microorganisms.

[0003] Current catheter caps for preventing catheter infection usually require medical staff to manually grasp the surface of the catheter to complete the insertion and connection of the cap. However, incomplete hand disinfection (such as gloves not being changed or not being re-disinfected after contact with contaminants) directly leads to the transfer of bacteria to the catheter surface. During the indwelling process of the catheter, bacteria migrate along the outer wall of the catheter toward the catheter orifice, which can easily cause intraluminal infection. Secondly, the interface area where the end of the cap contacts the catheter is prone to bacterial growth. When the cap is separated from the catheter, the friction between the inner wall of the cap and the outer wall of the catheter will generate a pulling force, causing the bacterial biofilm in the interface gap to fall off and migrate upward to the catheter orifice as the cap moves, causing intraluminal contamination.

[0004] In view of the above problems, a sealing cap for preventing catheter infection is proposed. Summary of the Invention

[0005] The purpose of the present invention is to provide a sealing cap for preventing catheter infection. By using this device, the problem that bacteria migrate along the outer wall of the catheter toward the catheter port during the indwelling process of the catheter in the above-mentioned background, which easily causes intraluminal infection, and when the sealing cap is separated from the catheter, the bacteria migrate upward to the catheter port with the movement of the sealing cap, causing intraluminal contamination.

[0006] To achieve the above object, the present invention provides the following technical solutions: A tube sealing cap for preventing catheter infection comprises a tube sealing cap body, wherein a liquid storage tank is fixedly installed inside the tube sealing cap body, a fixing column is fixedly installed on one side of the liquid storage tank, a first button is slidably connected to one end of the tube sealing cap body, three first elastic rods are fixedly installed on one side of the first button, the three first elastic rods are all connected through the tube sealing cap body and one side of the liquid storage tank, a wiper is fixedly installed on one end of the three first elastic rods, a second button is slidably connected to one end of the tube sealing cap body, three cylinders are connected through the one side of the liquid storage tank, a plurality of liquid outlet holes are penetrated on the surface of the three cylinders, three second elastic rods are fixedly installed on one side of the second button, the three second elastic rods are all connected through the one side of the tube sealing cap body, and the second elastic rods are connected to the inner wall of the cylinder, and a liquid outlet cylinder is fixedly installed on one end of the second elastic rod near the wiper.

[0007] Furthermore, a first arc-shaped groove is provided at one end of the sealing cap body, the first button is slidably connected to the first arc-shaped groove, and two first sliding grooves are provided on the inner wall of the first arc-shaped groove; a second arc-shaped groove is provided at one end of the sealing cap body, the second button is slidably connected to the second arc-shaped groove, and two second sliding grooves are provided on the inner wall of the second arc-shaped groove.

[0008] Furthermore, a limiting groove is provided on the inner wall of one end of the tube sealing cap body, and the wiping piece is slidably connected to the limiting groove.

[0009] Furthermore, a sealing ring is sleeved on the surface of the fixing column, and the sealing ring is fixedly connected to the liquid storage tank.

[0010] Furthermore, first sliders are provided on both sides of the first button, and the first sliders are slidably connected to the first sliding groove; second sliders are provided on both sides of the second button, and the second sliders are slidably connected to the second sliding groove.

[0011] Furthermore, the first elastic rod includes a first cylinder and a second cylinder fixed at one end of the first cylinder, the first cylinder is slidably connected to the sealing cap body, the second cylinder is slidably connected to the liquid storage tank, a first spring is fixedly installed at one end of the second cylinder, and one end of the first spring is fixedly connected to the sealing cap body.

[0012] Furthermore, the wiping piece includes a disc and a first Velcro fixed inside the disc, a second Velcro is adhered to one side of the first Velcro, a diaphragm is fixedly connected to one side of the second Velcro, and a sponge is fixedly connected to one side of the diaphragm.

[0013] Furthermore, three through holes corresponding to the positions of the three liquid outlet cylinders are formed through one side of the disc.

[0014] Furthermore, the second elastic rod includes two first fixed plates and a sliding rod that passes through and is connected to one side of the two first fixed plates. The two first fixed plates are fixedly installed inside the cylinder. A second fixed plate is fixedly installed on the surface of the sliding rod. The second fixed plate is in contact with the first fixed plate. A second spring is fixedly installed on one side of the second fixed plate. One end of the second spring is fixedly connected to the first fixed plate.

[0015] Furthermore, a plurality of liquid inlet holes are formed through one end of the liquid outlet cylinder.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By pressing the second button, the second elastic rod can drive the liquid discharge cylinder to move downward, and at this time, the iodine tincture liquid inside the liquid storage tank flows into the liquid discharge cylinder through multiple liquid discharge holes, and at this time, the iodine tincture liquid flows into the wiping member through the liquid discharge cylinder, and the wiping member absorbs the iodine tincture liquid. During the process of inserting the fixed column into the catheter, the wiping member fits the surface of the catheter and wipes and disinfects the insertion section for the first time, which can sterilize and disinfect the surface of the catheter, and prevent bacteria from moving along the outer wall of the catheter to the catheter port, which is easy to cause intracavitary infection. When the wiping member moves down to the bottom, the wiping member completely wraps the catheter interface area to form an initial seal and antibacterial barrier. By pressing the first button, the first elastic rod and the wiping member can be driven to move downward, and at this time, the surface of the catheter near the end of the sealing cap body can be sterilized and disinfected by the wiping member, so as to prevent the sealing cap body from driving bacteria to migrate upward to the catheter port when the sealing cap body is separated from the catheter, thereby causing intracavitary contamination.

[0017] When the concentration of the iodine tincture liquid in the wiper decreases due to volatilization or consumption during disinfection, the second button is pressed again to allow the iodine tincture liquid in the liquid storage tank to flow into the wiper through the liquid outlet tube, replenishing the disinfectant component and ensuring that the wiper always maintains an effective antibacterial concentration. After the iodine tincture liquid is replenished, the first button can be pressed again to sterilize and disinfect the catheter surface near the end of the sealing cap body again through the wiper. The catheter surface can be sterilized and disinfected multiple times as needed. Therefore, the synergistic mechanism of replenishing the disinfectant component on demand and active mechanical cleaning can better prevent catheter infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the pipe sealing cap body of the present invention; Figure 3 This is a schematic structural diagram of the first button and the second button of the present invention; Figure 4 Schematic diagram of the first elastic rod structure of the present invention; Figure 5 For the present invention Figure 4 Schematic diagram of the structure at A in the middle; Figure 6 This is a schematic structural diagram of the wiping member of the present invention; Figure 7 For the present invention Figure 4 Schematic diagram of the structure at B in the middle; Figure 8 For the present invention Figure 4 Schematic diagram of the structure at point C in the middle.

[0019] In the figure: 1. tube sealing cap body; 11. first arcuate groove; 12. first slide groove; 13. second arcuate groove; 14. second slide groove; 15. limit groove; 2. liquid storage tank; 3. fixed column; 31. sealing ring; 4. first button; 41. first slider; 5. first elastic rod; 51. first cylinder; 52. second cylinder; 53. first spring; 6. wiper; 61. disk; 611. through hole; 62. first Velcro; 63. second Velcro; 64. diaphragm; 65. sponge; 7. second button; 71. second slider; 8. cylinder; 9. liquid outlet; 10. second elastic rod; 101. first fixed disk; 102. slide rod; 103. second fixed disk; 104. second spring; 20. liquid outlet cylinder; 201. liquid inlet. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0021] In order to solve the technical problem that during the catheter indwelling process, bacteria move along the outer wall of the catheter to the catheter port, which is easy to cause intraluminal infection, when the sealing cap is separated from the catheter, the bacteria migrate upward to the catheter port with the movement of the sealing cap, causing intraluminal contamination, such as Figures 1-8 As shown, the following preferred technical solutions are provided: like Figure 1-Figure 2 and Figure 5As shown, a sealing cap for preventing catheter infection comprises a sealing cap body 1, a liquid storage tank 2 is fixedly installed inside the sealing cap body 1, a certain amount of iodine tincture liquid is stored inside the liquid storage tank 2, and the iodine tincture liquid can be used for sterilization and disinfection, the liquid storage tank 2 adopts a disposable design, is integrally formed with the sealing cap body 1, and there is no possibility of secondary filling (avoiding the risk of contamination), the iodine tincture in the liquid storage tank 2 supports 3-5 times of supplementary disinfection, corresponding to the recommended service life of the sealing cap body 1, a fixing column 3 is fixedly installed on one side of the liquid storage tank 2, and the fixing column 3 is inserted into the interior of the catheter and is in close contact with the inner wall of the catheter to seal one end of the catheter, a first button 4 is slidably connected to one end of the sealing cap body 1, and three first elastic rods 5 are fixedly installed on one side of the first button 4, and the three first elastic rods 5 are all penetrated It is connected to the sealing cap body 1 and one side of the liquid storage tank 2. One end of the three first elastic rods 5 is fixedly installed with a wiping piece 6. By pressing the first button 4, the first elastic rod 5 and the wiping piece 6 can be driven to move downward. At this time, the surface of the catheter near the end of the sealing cap body 1 can be sterilized by the wiping piece 6. One end of the sealing cap body 1 is slidably connected to the second button 7. Three cylinders 8 are connected through one side of the liquid storage tank 2. Several liquid outlet holes 9 are opened on the surfaces of the three cylinders 8. Three second elastic rods 10 are fixedly installed on one side of the second button 7. The three second elastic rods 10 are all connected through one side of the sealing cap body 1, and the second elastic rods 10 are connected to the inner wall of the cylinder 8. One end of the second elastic rod 10 is fixedly installed with a liquid discharge cylinder 20 near the wiping piece 6.

[0022] By pressing the second button 7, the second elastic rod 10 can drive the liquid discharge tube 20 to move downward. In the initial state, the liquid discharge hole 9 can be blocked by the liquid discharge tube 20. When the liquid discharge tube 20 moves downward and away from the liquid discharge hole 9, the iodine-containing liquid inside the liquid storage tank 2 flows into the inside of the liquid discharge tube 20 through the multiple liquid discharge holes 9. Since the liquid discharge tube 20 moves downward and contacts the wiper 6, the iodine-containing liquid now flows into the inside of the wiper 6 through the liquid discharge tube 20. The wiper 6 absorbs the iodine-containing liquid, and the catheter surface is sterilized by the wiper 6. The iodine-containing liquid can be filled with the entire wiper 6 faster through the three liquid discharge tubes 20.

[0023] First, the medical staff holds the catheter and the tube sealing cap body 1, and presses the second button 7 to make the second elastic rod 10 drive the liquid discharge cylinder 20 to move downward. In the initial state, the liquid discharge cylinder 20 can block the liquid discharge hole 9. When the liquid discharge cylinder 20 moves downward and away from the liquid discharge hole 9, the iodine tincture liquid inside the liquid storage tank 2 flows into the liquid discharge cylinder 20 through the multiple liquid discharge holes 9. Since the liquid discharge cylinder 20 moves downward and contacts the wiper 6, the iodine tincture liquid flows into the wiper 6 through the liquid discharge cylinder 20, and the wiper 6 absorbs the iodine tincture liquid. After absorption, the wiper 6 expands to ensure uniform infiltration of the surface. The elastic force of the second elastic rod 10 resets the liquid discharge cylinder 20 and the second button 7, and the liquid discharge hole 9 is blocked again by the liquid discharge cylinder 20. At this time, the fixed column 3 is inserted into the interior of the catheter and is in close contact with the inner wall of the catheter to block one end of the catheter. During the process of inserting the fixed column 3 into the catheter, the wiper 6 adheres to the surface of the catheter and wipes and disinfects the insertion section for the first time, which can sterilize and disinfect the surface of the catheter, preventing bacteria from moving along the outer wall of the catheter to the catheter port, which can easily cause intracavitary infection.

[0024] When the wiper 6 moves down to the bottom, the wiper 6 completely wraps the catheter interface area to form an initial seal and antibacterial barrier. By pressing the first button 4, the first elastic rod 5 and the wiper 6 can be driven to move downward. At this time, the wiper 6 can sterilize the catheter surface near the end of the sealing cap body 1 to prevent the sealing cap body 1 from driving bacteria to migrate upward to the catheter port when the sealing cap body 1 is separated from the catheter, causing contamination in the cavity.

[0025] When the concentration of the iodine tincture liquid in the wiper 6 decreases due to volatilization or consumption for disinfection, the second button 7 is pressed again to allow the iodine tincture liquid inside the liquid storage tank 2 to flow into the wiper 6 through the liquid outlet tube 20, replenishing the disinfectant component and ensuring that the wiper 6 always maintains an effective antibacterial concentration. After the iodine tincture liquid is replenished, the first button 4 can be pressed again to sterilize and disinfect the catheter surface near the end of the tube sealing cap body 1 again through the wiper 6. The catheter surface can be sterilized and disinfected multiple times as needed. Therefore, the synergistic mechanism of replenishing the disinfectant component on demand and active mechanical cleaning can better prevent catheter infection.

[0026] A sealing ring 31 is sleeved on the surface of the fixing column 3, and the sealing ring 31 is fixedly connected to the liquid storage tank 2. When the fixing column 3 is inserted into the catheter, the sealing effect can be improved by the contact between the sealing ring 31 and the end of the catheter.

[0027] like Figure 3As shown, a first arcuate groove 11 is provided at one end of the pipe sealing cap body 1, and the first button 4 is slidably connected to the first arcuate groove 11. The first arcuate groove 11 is used to place the first button 4 so that the first button 4 can move inside the first arcuate groove 11. Two first sliding grooves 12 are provided on the inner wall of the first arcuate groove 11. A second arcuate groove 13 is provided at one end of the pipe sealing cap body 1, and the second button 7 is slidably connected to the second arcuate groove 13. The second arcuate groove 13 is used to place the second button 7 so that the second button 7 can move inside the second arcuate groove 13. Two second sliding grooves 14 are provided on the inner wall of the second arcuate groove 13. A limiting groove 15 is provided on the inner wall of one end of the pipe sealing cap body 1, and the wiper 6 is slidably connected to the limiting groove 15. The limiting groove 15 can limit the wiper 6, so as to prevent the wiper 6 from moving into the inside of the pipe sealing cap body 1 due to friction when the pipe sealing cap body 1 is inserted into one end of the catheter. The limiting groove 15 allows the wiper 6 to only move downward.

[0028] First sliders 41 are provided on both sides of the first button 4, and the first sliders 41 are slidably connected to the first slide groove 12. Second sliders 71 are provided on both sides of the second button 7, and the second sliders 71 are slidably connected to the second slide groove 14. The first sliders 41 cooperate with the first slide groove 12 to prevent the first button 4 from separating from the sealing cap body 1 when it rebounds. The second sliders 71 cooperate with the second slide groove 14 to prevent the second button 7 from separating from the sealing cap body 1 when it rebounds.

[0029] like Figure 4 As shown, the first elastic rod 5 includes a first cylinder 51 and a second cylinder 52 fixed at one end of the first cylinder 51. The first cylinder 51 is slidably connected to the sealing cap body 1, and the second cylinder 52 is slidably connected to the liquid storage tank 2. A first spring 53 is fixedly installed at one end of the second cylinder 52, and one end of the first spring 53 is fixedly connected to the sealing cap body 1.

[0030] When the first button 4 is pressed, the first button 4 can push the first cylinder 51 and the second cylinder 52 to move downward. At this time, the wiper 6 can sterilize the surface of the catheter near the end of the sealing cap body 1 to prevent the sealing cap body 1 from driving bacteria to migrate upward to the catheter port when the sealing cap body 1 is separated from the catheter, causing contamination in the cavity. When the pressing force of the first button 4 disappears, the elastic force of the first spring 53 can make the first cylinder 51, the second cylinder 52 and the first button 4 return to their initial positions, which is convenient for next use.

[0031] like Figure 4 、 Figure 7 and Figure 8As shown, the second elastic rod 10 includes two first fixed plates 101 and a sliding rod 102 that passes through and is connected to one side of the two first fixed plates 101. The two first fixed plates 101 are fixedly installed inside the cylinder 8. The movement of the sliding rod 102 can be limited by the two first fixed plates 101 to prevent the sliding rod 102 from tilting when moving. A second fixed plate 103 is fixedly installed on the surface of the sliding rod 102. The second fixed plate 103 contacts the first fixed plate 101. A second spring 104 is fixedly installed on one side of the second fixed plate 103. The second spring 104 can provide elastic force to push the sliding rod 102 back to its initial position. One end of the second spring 104 is fixedly connected to the first fixed plate 101.

[0032] By pressing the second button 7, the slide bar 102 and the second fixed disk 103 can be driven to move, thereby squeezing the second spring 104 through the second fixed disk 103, and the liquid discharge cylinder 20 can be driven to move downward through the slide bar 102. When the second button 7 loses pressure, the elastic force of the second spring 104 causes the slide bar 102, the liquid discharge cylinder 20 and the second button 7 to return to their initial positions.

[0033] One end of the liquid outlet cylinder 20 is penetrated by a plurality of liquid inlet holes 201 . When the iodine tincture liquid flows into the liquid outlet cylinder 20 , it flows into the sponge 65 through the liquid inlet holes 201 .

[0034] In order to solve the technical problem that after long-term use, the internal pores of sponge 65 will be gradually blocked due to repeated absorption of iodine and contact with pollutants on the catheter surface, resulting in reduced iodine penetration uniformity, weakened wrapping and wiping friction on the catheter surface, and increased disinfection blind spots, such as Figure 6 As shown, the following preferred technical solutions are provided: The wiping piece 6 includes a disc 61 and a first Velcro 62 fixed inside the disc 61. A second Velcro 63 is adhered to one side of the first Velcro 62. The second Velcro 63 is bonded to the first Velcro 62 to facilitate disassembly and installation. A diaphragm 64 is fixedly connected to one side of the second Velcro 63. A sponge 65 is fixedly connected to one side of the diaphragm 64. The diaphragm 64 can be used to separate them to prevent iodine tincture from being released between the first Velcro 62 and the second Velcro 63 after the sponge 65 absorbs iodine tincture, which affects the adhesion between the first Velcro 62 and the second Velcro 63. A ring-shaped medical sponge 65 (with an inner diameter adapted to the outer diameter of the catheter) is used, and the surface is covered with a hydrophilic film (to ensure uniform penetration of iodine tincture).

[0035] After long-term use, the internal pores of sponge 65 will gradually be clogged due to repeated absorption of iodine tincture and contact with pollutants on the surface of the catheter, resulting in reduced uniformity of iodine tincture penetration, weakened wrapping and wiping friction on the catheter surface, and increased blind spots in disinfection. When the sponge 65 needs to be replaced, the sponge 65 is removed from the inside of the tube sealing cap body 1, and then the sponge 65 is pulled to separate the second Velcro 63 from the first Velcro 62, and the sponge 65 can be disassembled. Then, a new sponge 65 is fixed to the sponge 65 by gluing the second Velcro 63 to the first Velcro 62, and disassembly and installation are relatively convenient. Therefore, regular replacement of the new sponge 65 can ensure that it always maintains good water absorption, elasticity and fit, and ensures that the iodine tincture can evenly cover the catheter surface during each disinfection, maintaining a stable sterilization efficiency.

[0036] Even though the antibacterial concentration can be temporarily maintained by supplementing iodine tincture, bacteria that have not been completely killed may remain on the surface and inside of sponge 65, which will become a secondary pollution source after long-term accumulation. Therefore, regular replacement can eliminate these residual bacteria from the source and cut off the chain of continuous bacterial reproduction. During the catheter maintenance process, sponge 65 may indirectly contact microorganisms on the hands of medical staff, ambient air or the surface of other objects. Especially after multiple dynamic wiping, dust, dandruff and other impurities may adhere to the surface, becoming a carrier for bacterial colonization. Regular replacement can prevent these pollutants from moving with sponge 65 into the catheter interface area, thereby reducing the risk of exogenous infection.

[0037] Three through holes 611 corresponding to the positions of the three liquid discharge cylinders 20 are formed on one side of the disc 61. After the liquid discharge cylinder 20 moves downward, it is slidably connected to the through hole 611 until one end of the liquid discharge cylinder 20 contacts the sponge 65. The iodine tincture liquid flowing out of the liquid discharge cylinder 20 is absorbed by the sponge 65.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tube sealing cap for preventing catheter infection, comprising a tube sealing cap body (1), characterized in that: A liquid storage tank (2) is fixedly installed inside the sealing cap body (1), and a fixed column (3) is fixedly installed on one side of the liquid storage tank (2). One end of the sealing cap body (1) is slidably connected to a first button (4), and one side of the first button (4) is fixedly installed with three first elastic rods (5). The three first elastic rods (5) are all connected through the sealing cap body (1) and one side of the liquid storage tank (2). One end of the three first elastic rods (5) is fixedly installed with a wiper (6). One end of the sealing cap body (1) is slidably connected to a second button (7), and one side of the liquid storage tank (2) is connected through three cylinders (8). The surfaces of the three cylinders (8) are all opened through a plurality of liquid outlet holes (9). Three second elastic rods (10) are fixedly installed on one side of the second button (7). The three second elastic rods (10) are all connected through the side of the sealing cap body (1), and the second elastic rods (10) are connected to the inner wall of the cylinder (8). One end of the second elastic rod (10) is fixedly installed with a liquid outlet cylinder (20) near the wiper (6).

2. The sealing cap for preventing catheter infection according to claim 1, characterized in that: A first arcuate groove (11) is provided at one end of the tube sealing cap body (1), a first button (4) is slidably connected to the first arcuate groove (11), and two first sliding grooves (12) are provided on the inner wall of the first arcuate groove (11); a second arcuate groove (13) is provided at one end of the tube sealing cap body (1), a second button (7) is slidably connected to the second arcuate groove (13), and two second sliding grooves (14) are provided on the inner wall of the second arcuate groove (13).

3. The sealing cap for preventing catheter infection according to claim 1, characterized in that: A limiting groove (15) is provided on the inner wall of one end of the tube sealing cap body (1), and the wiping member (6) is slidably connected to the limiting groove (15).

4. The sealing cap for preventing catheter infection according to claim 1, characterized in that: A sealing ring (31) is sleeved on the surface of the fixed column (3), and the sealing ring (31) is fixedly connected to the liquid storage tank (2).

5. The sealing cap for preventing catheter infection according to claim 2, characterized in that: First sliders (41) are provided on both sides of the first button (4), and the first sliders (41) are slidably connected to the first slide groove (12). Second sliders (71) are provided on both sides of the second button (7), and the second sliders (71) are slidably connected to the second slide groove (14).

6. The sealing cap for preventing catheter infection according to claim 1, characterized in that: The first elastic rod (5) comprises a first cylinder (51) and a second cylinder (52) fixed to one end of the first cylinder (51); the first cylinder (51) is slidably connected to the tube sealing cap body (1); the second cylinder (52) is slidably connected to the liquid storage tank (2); a first spring (53) is fixedly mounted on one end of the second cylinder (52); and one end of the first spring (53) is fixedly connected to the tube sealing cap body (1).

7. The sealing cap for preventing catheter infection according to claim 1, characterized in that: The wiping member (6) comprises a disc (61) and a first Velcro (62) fixed inside the disc (61); a second Velcro (63) is adhered to one side of the first Velcro (62); a diaphragm (64) is fixedly connected to one side of the second Velcro (63); and a sponge (65) is fixedly connected to one side of the diaphragm (64).

8. The sealing cap for preventing catheter infection according to claim 7, characterized in that: Three through holes (611) corresponding to the positions of the three liquid discharge cylinders (20) are formed through one side of the disc (61).

9. The sealing cap for preventing catheter infection according to claim 1, characterized in that: The second elastic rod (10) includes two first fixed disks (101) and a sliding rod (102) that passes through and is connected to one side of the two first fixed disks (101). The two first fixed disks (101) are fixedly installed inside the cylinder (8). A second fixed disk (103) is fixedly installed on the surface of the sliding rod (102). The second fixed disk (103) is in contact with the first fixed disk (101). A second spring (104) is fixedly installed on one side of the second fixed disk (103). One end of the second spring (104) is fixedly connected to the first fixed disk (101).

10. The sealing cap for preventing catheter infection according to claim 1, characterized in that: One end of the liquid outlet cylinder (20) is provided with a plurality of liquid inlet holes (201).

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