Protective device for end of central venous catheter
By designing a sliding block and spring-driven protective mechanism, the problems of easy wetting and wear of medical gauze were solved, achieving effective protection of the central venous catheter tip, improving ease of use and aesthetics, and reducing the risk of infection.
Patent Information
- Application Number
- CN202520267320.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-19
AI Technical Summary
In the existing technology, when medical gauze is used to protect the tip of the central venous catheter in the neck of a hemodialysis patient, it is easily soaked with water, contaminated or worn, leading to the risk of infection. It is also unsightly and inconvenient to handle.
A protective device for the tip of a central venous catheter was designed. The protective mechanism consists of a sliding block, a ball, and a spring. The automatic locking of the occluder is achieved by the movement of the sliding block and the elastic reset of the spring, protecting the port from contamination and facilitating operation.
It effectively prevents contamination of the cervical hemodialysis stoma, improves aesthetics and ease of operation, extends service life, and reduces the risk of infection.
Smart Images
Figure CN223601861U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of medical devices, concretely relates to a central venous catheter end head protection device. BACKGROUND
[0002] For hemodialysis patients, they generally need dialysis three times a week, that is, dialysis once every other day, and each dialysis lasts no more than one day. Therefore, when they are not given hemodialysis, the hemodialysis central venous catheter end head left in their neck needs to be isolated and protected to avoid being contaminated by foreign objects and causing the patient's neck hemodialysis fistula to be infected by bacteria. Therefore, the hemodialysis central venous catheter end head protection is very important.
[0003] However, in the prior art, when the patient is not given hemodialysis, medical gauze is usually used to wrap and protect the central venous catheter end head left in the patient's neck and the patient's neck hemodialysis fistula. Although this method can protect the central venous catheter, it still has certain defects and deficiencies. The medical gauze is a water-absorbing material, and the water will wet the gauze when the patient takes a bath. If the patient splashes water stains on the medical gauze wrapped around the end of the central venous catheter during showering, it will cause the patient's neck hemodialysis fistula to be contaminated and even cause bacterial infection. In addition, the exposed medical gauze also attaches dust and is easily contaminated and loosened by the patient's upper body clothing. At the same time, the direct exposure of the medical gauze is also very unsightly. SUMMARY
[0004] The utility model aims at solving the shortcomings in the prior art and provides a central venous catheter end head protection device.
[0005] To achieve the above purpose, the utility model provides a central venous catheter end head protection device, which comprises a base, one end of the base is fixedly connected with a catheter, the other end of the base is fixedly connected with a No. 1 hose and a No. 2 hose, the end of the No. 1 hose and the No. 2 hose away from the base is fixedly connected with a port, and the inside of the two ports is provided with a protection mechanism.
[0006] The protection mechanism is used for protecting the port.
[0007] In the above technical scheme, further, the protection mechanism comprises a sliding block, and the sliding block is slidingly connected to the outer wall of the port.
[0008] In the above technical scheme, further, the inner wall of the port is provided with installation grooves, the four installation grooves are equidistantly distributed, and the four installation grooves are trapezoidal.
[0009] In the above technical scheme, further, the outer part of the sliding block is fixedly connected with a limiting block.
[0010] Further in the technical scheme, the inside of the installation slot is slidably connected with a spherical ball, and the diameter of the spherical ball is greater than the length of the slot in the port.
[0011] Further in the technical scheme, the inside of the port is slidably connected with a sealing plug, and the diameter of the sealing plug is equal to the diameter of the inner wall of the port.
[0012] Further in the technical scheme, the outer wall of the sealing plug is provided with a clamping slot, and the profile of the clamping slot is consistent with the outer diameter of the spherical ball.
[0013] Further in the technical scheme, the spherical ball is clamped in the clamping slot, the outer wall of the port is sleeved with a spring, and the spring is located between one side of the sliding block and the outer wall of the port.
[0014] Further in the technical scheme, the end of the sealing plug is fixedly connected with a protection block, and the diameter of the protection block is greater than the diameter of the outer wall of the port.
[0015] Further in the technical scheme, the outside of the sliding block is provided with anti-skid lines.
[0016] Compared with the prior art, the utility model has the following beneficial effects:
[0017] The utility model discloses a protection mechanism for the internal part of the port, and the protection mechanism comprises a base, a sliding block, a mounting groove, a ball, an anti -skid line, a limiting block, a spring, a sealing plug and a protection block, wherein the base is connected with the first hose and the second hose, the base is provided with the port, the sliding block is arranged on the outer wall of the port, the mounting groove is arranged on the outer wall of the port, the ball is arranged in the mounting groove, the anti -skid line is arranged on the outer wall of the mounting groove, the limiting block is arranged on the outer wall of the mounting groove, the spring is arranged on the outer wall of the mounting groove, the sealing plug is arranged in the internal part of the port, and the protection block is arranged on the internal part of the port. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;
[0019] Figure 2 It is the internal structure schematic diagram of the port in the utility model;
[0020] Figure 3 It is the connection relation schematic diagram between the sealing plug and the port in the utility model.
[0021] Mark number explanation in drawing:
[0022] In the drawing: 1, base;11, catheter;12, first hose;13, second hose;14, port;2, protection mechanism;21, sliding block;22, mounting groove;23, ball;24, anti -skid line;25, limiting block;26, spring;27, sealing plug;28, card slot;29, protection block. DETAILED DESCRIPTION
[0023] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0024] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected", which can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. Example one
[0025] As Figure 1 - Figure 3 The utility model discloses a central venous catheter end head protection device, including base 1, one end of base 1 is fixedly connected with catheter 11, the other end of base 1 is fixedly connected with no. One soft tube 12 and no. Two soft tubes 13, the end of no. One soft tube 12 and no. Two soft tubes 13 away from base 1 are all fixedly connected with port 14, and the inside of two ports 14 are all provided with protection mechanism 2;Protection mechanism 2, it is used for the protection of port 14.
[0026] In the embodiment, medical staff can directly insert catheter 11 into the central vein of human body as dialysis passage, and the inside of catheter 11 has two lumens, and when dialysis, no. One soft tube 12 and no. Two soft tubes 13 of catheter 11 pipeline are connected with dialysis machine, and two lumens in catheter 11 one lumen leads the blood in human body out of human body, and another lumen sends back blood to human body, so that a blood circulation loop for dialysis can be formed outside the patient's body. Example two
[0027] As Figure 1 - Figure 3The protection device for the end of a central venous catheter shown in the application comprises a protection mechanism 2, which comprises a sliding block 21 slidably connected to the outer wall of the port 14. The inner wall of the port 14 is provided with four installation grooves 22, which are equidistantly distributed and in the shape of a trapezoid. The outer part of the sliding block 21 is fixedly connected to a limiting block 25. The inner part of the installation groove 22 is slidably connected to a spherical ball 23, which has a diameter greater than the length of the inner slot of the installation groove 22. The inner part of the port 14 is slidably connected to a sealing plug 27, which has a diameter equal to that of the inner wall of the port 14. The outer wall of the sealing plug 27 is provided with a clamping groove 28, which has a contour matching the outer diameter of the spherical ball 23. The spherical ball 23 is clamped in the inner part of the clamping groove 28. The outer wall of the port 14 is sleeved with a spring 26, which is located between the outer wall of the port 14 and one side of the sliding block 21. The end of the sealing plug 27 is fixedly connected to a protection block 29, which has a diameter greater than that of the outer wall of the port 14. The outer part of the sliding block 21 is provided with anti-skid lines 24.
[0028] In this embodiment, when the first hose 12 and the second hose 13 are not in use, if the medical staff needs to protect the inside of the port 14 connected to the first hose 12 and the second hose 13, the sealing plug 27 can be inserted into the inside of the port 14. If the staff needs to insert the sealing plug 27 into the inside of the port 14, the sliding block 21 can be first pushed by hand. After the sliding block 21 is pushed, it will slide relative to the port 14. In the sliding process of the sliding block 21, one side of the sliding block 21 will extrude the spring 26 and make the spring 26 elastically deform and shrink and store a certain elastic potential energy. When the sliding block 21 slides to the maximum compression distance of the spring 26, one side of the sliding block 21 will release the limitation of the spherical ball 23 on the inner wall of the mounting groove 22. At this time, the spherical ball 23 can slide in the inside of the mounting groove 22. Then the staff inserts the sealing plug 27 into the inside of the port 14. After one side of the protection block 29 is attached to one side of the port 14, the clamping groove 28 can be located in front of the spherical ball 23. Then the medical staff can release the sliding block 21. At this time, the spring 26 in the elastic contraction state will rebound, thereby driving the sliding block 21 to slide again on the outer wall of the port 14 and extruding the spherical ball 23. After the spherical ball 23 is extruded, it is clamped in the inside of the clamping groove 28, thereby completing the limitation of the sealing plug 27 in the inside of the port 14. The protection block 29 fixedly connected to the end portion of the sealing plug 27 has a diameter greater than the diameter of the outer wall of the port 14. When the port 14 is subjected to external collision and other external forces, the protection block 29 can play a buffering and protection role, avoiding the direct action of external force on the port 14 and the sealing plug 27, effectively prolonging the service life of the port 14 and the protection mechanism 2. In addition, the anti-skid lines 24 opened on the outside of the sliding block 21 increase the friction between the hand and the sliding block 21, making it more labor-saving and stable for the operator to push the sliding block 21, and the operation experience is better. The core component of the protection mechanism 2 is the sliding block 21, which is connected to the outer wall of the port 14 in a sliding manner. This connection mode makes the sliding block 21 smoothly slide along the outer wall of the port 14, and the operation flexibility is high. The inner wall of the port 14 is carefully provided with four mounting grooves 22. These mounting grooves 22 are equally distributed and are all trapezoidal. This unique trapezoidal design can provide a stable track for the sliding of the spherical ball 23, and on the other hand, it is conducive to better dispersing stress when the spherical ball 23 is subjected to external force, thereby improving the stability of the structure. The core component of the protection mechanism 2 is the sliding block 21, which is connected to the outer wall of the port 14 in a sliding manner. This connection mode makes the sliding block 21 smoothly slide along the outer wall of the port 14, and the operation flexibility is high. The inner wall of the port 14 is carefully provided with four mounting grooves 22. These mounting grooves 22 are equally distributed and are all trapezoidal.The unique trapezoidal design can provide the limit block 25 fixedly connected to the outer wall of the port 14 for the sliding of the ball 23. The two limit blocks 25 are respectively located on the two sides of the sliding block 21, which accurately limits the sliding range of the sliding block 21 and prevents it from sliding excessively and falling off the port 14, thereby ensuring the reliability of the entire protection mechanism 2. The ball 23 is slidably connected in the installation groove 22, and the diameter of the ball 23 is greater than the length of the installation groove 22 located in the inner groove of the port 14. This ingenious design makes the ball 23 not easy to fall off from the installation groove 22, while being able to freely slide in the installation groove 22, thereby providing a stable track for effectively clamping the sealing plug 27. On the other hand, it is beneficial to better disperse stress when the ball 23 is subjected to external force, thereby improving the stability of the structure. The sealing plug 27 is slidably connected in the port 14, and the diameter of the sealing plug 27 is equal to the diameter of the inner wall of the port 14, which can tightly fit the inner wall of the port 14 and effectively prevent impurities, dust, moisture and the like from entering the inside of the port 14, thereby playing a good sealing protection role. The clamping groove 28 is provided on the outer wall of the sealing plug 27, and the profile of the clamping groove 28 is consistent with the outer diameter of the ball 23, so that the ball 23 can be accurately clamped in the clamping groove 28. When the sliding block 21 pushes the ball 23 to move, the clamping cooperation between the ball 23 and the clamping groove 28 can stably control the position of the sealing plug 27, thereby realizing the opening and closing of the port 14. The spring 26 is sleeved on the outer wall of the port 14 and located between the sliding block 21 and the outer wall of the port 14. The spring 26 has good elastic reset function. When the sliding block 21 is pushed by external force, the spring 26 is compressed to store elastic potential energy. When the external force disappears, the spring 26 releases the elastic potential energy to push the sliding block 21 to reset, thereby driving the ball 23 and the sealing plug 27 to return to the initial position, thereby realizing the automatic reset function and being convenient to operate without manual reset.
[0029] Working principle: medical staff can directly insert the catheter 11 into the central vein of the human body as a dialysis access, the catheter 11 has two lumens inside, during dialysis, the first hose 12 and the second hose 13 of the catheter 11 pipeline are connected with the dialysis machine, one of the two lumens of the catheter 11 leads the blood in the human body out of the human body, and the other lumen returns the blood to the human body, so that a blood circulation loop outside the patient's body is formed for dialysis, when the first hose 12 and the second hose 13 are not in use, if the medical staff needs to protect the inside of the port 14 connected by the first hose 12 and the second hose 13, the sealing plug 27 can be inserted into the inside of the port 14, if the staff needs to insert the sealing plug 27 into the inside of the port 14, the sliding block 21 can be first pushed by hand, after the sliding block 21 is pushed, the sliding block 21 will slide relative to the port 14, in the process of sliding of the sliding block 21, one side of the sliding block 21 will extrude the spring 26 and make the spring 26 elastically deform and contract and store a certain elastic potential energy, when the sliding block 21 slides to the maximum compression distance of the spring 26, one side of the sliding block 21 will release the limitation of the spherical ball 23 on the inner wall of the installation groove 22, at this time the spherical ball 23 can slide in the inside of the installation groove 22, then the staff inserts the sealing plug 27 into the inside of the port 14, after one side of the protection block 29 is attached to one side of the port 14, the clamping groove 28 can be located in front of the spherical ball 23, then the medical staff can release the sliding block 21, at this time the spring 26 in the elastic contraction state will rebound, so as to drive the sliding block 21 to slide again on the outer wall of the port 14 and extrude the spherical ball 23, the spherical ball 23 will be clamped in the inside of the clamping groove 28 after being extruded, so as to limit the sealing plug 27 in the inside of the port 14, the end fixedly connected with the protection block 29 of the sealing plug 27 has a diameter greater than that of the outer wall of the port 14, when the port 14 is subjected to external impact and other external forces, the protection block 29 can play a buffering and protection role, avoiding the external force acting directly on the port 14 and the sealing plug 27, effectively prolonging the service life of the port 14 and the protection mechanism 2. In addition, the anti-skid lines 24 opened on the outside of the sliding block 21 increase the friction between the hand and the sliding block 21, so that the operator can push the sliding block 21 more labor-saving, stable, and the operation experience is better, the core component of the protection mechanism 2 is the sliding block 21, which is connected with the outer wall of the port 14 in a sliding manner, this connection manner makes the sliding block 21 can slide smoothly along the outer wall of the port 14, the operation flexibility is high. The inner wall of the port 14 is carefully provided with four installation grooves 22, these installation grooves 22 are equally distributed and are all trapezoidal. This unique trapezoidal design can provide a stable track for the sliding of the spherical ball 23, on the other hand, it is conducive to better dispersing stress when the spherical ball 23 is subjected to external force, improving the stability of the structure, the core component of the protection mechanism 2 is the sliding block 21, which is connected with the outer wall of the port 14 in a sliding manner, this connection manner makes the sliding block 21 can slide smoothly along the outer wall of the port 14, the operation flexibility is high.The inner wall of the port 14 is carefully provided with four mounting grooves 22, which are equidistantly distributed and are all trapezoidal. The unique trapezoidal design can provide a limiting block 25 fixedly connected to the outer wall of the port 14 for the sliding of the ball 23, two limiting blocks 25 are respectively located on the two sides of the sliding block 21, which accurately limits the sliding range of the sliding block 21, prevents it from sliding excessively and falling off the port 14, and ensures the reliability of the operation of the entire protection mechanism 2. The ball 23 slidingly connected in the mounting groove 22 has a diameter greater than the length of the mounting groove 22 located in the inner groove of the port 14, which is a clever design that prevents the ball 23 from falling out of the mounting groove 22 and allows it to freely slide in the mounting groove 22, providing a stable track for effectively clamping the sealing plug 27. On the other hand, it is beneficial to better disperse stress when the ball 23 is subjected to external force, and improve the stability of the structure. The sealing plug 27 slidingly connected in the port 14 has a diameter equal to the diameter of the inner wall of the port 14, which can tightly fit the inner wall of the port 14, effectively prevent foreign matter, dust, moisture and the like from entering the inside of the port 14, and play a good sealing protection role. The clamping groove 28 provided on the outer wall of the sealing plug 27 has a contour that matches the outer diameter of the ball 23, so that the ball 23 can be accurately clamped in the clamping groove 28. When the sliding block 21 pushes the ball 23 to move, the clamping cooperation of the ball 23 and the clamping groove 28 can stably control the position of the sealing plug 27, realize the opening and closing of the port 14, and the spring 26 sleeved on the outer wall of the port 14 is located between the sliding block 21 and the outer wall of the port 14. The spring 26 has good elastic reset function. When the sliding block 21 is pushed by external force, the spring 26 is compressed to store elastic potential energy; when the external force disappears, the spring 26 releases the elastic potential energy to push the sliding block 21 to reset, and then drives the ball 23 and the sealing plug 27 to return to the initial position, realizes the automatic reset function, and is convenient to operate without manual reset.
[0030] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.
Claims
1. A central venous catheter tip protector device comprising a base (1), characterized in that: One end of the base (1) is fixedly connected with a conduit (11), the other end of the base (1) is fixedly connected with a first hose (12) and a second hose (13), the first hose (12) and the second hose (13) are fixedly connected with ports (14) away from the base (1), the interiors of the two ports (14) are provided with protection mechanisms (2). The protection mechanism (2) is used for protecting the port (14).
2. A central venous catheter tip protector according to claim 1, wherein, The protection mechanism (2) comprises sliding blocks (21), and the sliding blocks (21) are slidingly connected to the outer walls of the ports (14).
3. A central venous catheter tip protector according to claim 2, wherein: The inner walls of the ports (14) are provided with mounting grooves (22), four mounting grooves (22) are equidistantly distributed, and the four mounting grooves (22) are trapezoidal.
4. The central venous catheter tip protector according to claim 3, wherein: The outer part of the sliding block (21) is fixedly connected with a limiting block (25).
5. A central venous catheter tip protector according to claim 4, wherein: The interiors of the mounting grooves (22) are slidingly connected with spherical balls (23), and the diameters of the spherical balls (23) are greater than the lengths of the inner grooves of the mounting grooves (22) in the ports (14).
6. A central venous catheter tip protector according to claim 5, wherein: The interiors of the ports (14) are slidingly connected with sealing plugs (27), and the diameters of the sealing plugs (27) are equal to the diameters of the inner walls of the ports (14).
7. A central venous catheter tip protector according to claim 6, wherein: The outer walls of the sealing plugs (27) are provided with clamping grooves (28), and the profiles of the clamping grooves (28) are consistent with the outer diameters of the spherical balls (23).
8. A central venous catheter tip protector according to claim 7, wherein: The spherical balls (23) are clamped in the clamping grooves (28), the outer walls of the ports (14) are sleeved with springs (26), and the springs (26) are located between one side of the sliding blocks (21) and the outer walls of the ports (14).
9. The central venous catheter tip guard of claim 6, wherein: The end parts of the sealing plugs (27) are fixedly connected with protection blocks (29), and the diameters of the protection blocks (29) are greater than the diameters of the outer walls of the ports (14).
10. The central venous catheter tip protector according to claim 2, wherein: The outer part of the sliding block (21) is provided with anti-skid lines (24).