Umbilical vessel catheter securement device and method

Abstract

The present application relates to umbilical vessel catheter treatment technical field, disclose a kind of umbilical vessel catheter fixing device and method, including elastic tablet, top cover, bottom cover and medical silica gel, the top of the elastic tablet is fixedly connected to the bottom surface of top cover, the bottom surface of top cover and the top surface of bottom cover are fixedly connected with connecting structure, the top cover can be fixed in the upper portion of bottom cover by connecting structure, the bottom of bottom cover is connected with medical silica gel by connecting sheet, the connecting sheet, top cover, bottom cover and medical silica gel are all provided with through channel, the connecting structure includes first side skirt and second side skirt, the top surface of first side skirt is fixedly connected to the bottom surface of top cover. By utilizing the second side skirt of bottom cover upper surface can be connected with the first side skirt of top cover lower surface by external thread and internal thread thread, to solve the problem that the structure of traditional fixed umbilical vessel catheter device is more, thereby causing the problem of cumbersome operation.

Description

Technical Field

[0001] This invention relates to the field of umbilical vascular catheter therapy technology, specifically to an umbilical vascular catheter fixation device and method. Background Technology

[0002] Currently, umbilical catheters are widely used in neonatal intensive care units for intravenous infusions, blood collection, and monitoring vital signs. However, due to the delicate skin and frequent movements of newborns, umbilical catheters are prone to dislodgement or displacement, causing considerable inconvenience to medical staff and potentially endangering the lives of newborns. Therefore, effectively securing umbilical catheters has become an urgent problem to be solved.

[0003] Traditional methods for securing umbilical cord catheters mainly include using medical tape, specialized umbilical cord clamps, and elastic bandages. While these methods can achieve the desired fixation to some extent, they still present several problems. Medical tape is not always secure and is easily loosened by sweat and sebum, and prolonged use may cause skin allergies in newborns. Specialized umbilical cord clamps are complex to use, require professional adjustments, and are costly. Elastic bandages provide insufficient fixation and easily loosen with the newborn's movements. As technology advances, the requirements for securing umbilical cord catheters become increasingly stringent. The methods described above can only address some of these issues individually and cannot comprehensively solve problems such as unreliable fixation, cumbersome operation, and high cost, thus failing to meet clinical needs, especially in neonatal intensive care environments where these shortcomings are even more pronounced. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an umbilical vascular catheter fixation device and method, which solves the problem that traditional umbilical vascular catheter fixation devices have many structures, resulting in cumbersome operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an umbilical vascular catheter fixation device, comprising an elastic pressure plate, a top cover, a bottom cover, and medical silicone, wherein the top of the elastic pressure plate is fixedly connected to the bottom surface of the top cover, and both the bottom surface of the top cover and the top surface of the bottom cover are fixedly connected to a connecting structure, the top cover can be fixed to the upper part of the bottom cover through the connecting structure, and the bottom of the bottom cover is connected to the medical silicone through a connecting piece, wherein the connecting piece, the top cover, the bottom cover, and the medical silicone are all provided with through channels.

[0006] Preferably, the connecting structure includes a first side skirt and a second side skirt, the top surface of the first side skirt being fixedly connected to the bottom surface of the top cover, and the bottom surface of the second side skirt being fixedly connected to the top surface of the bottom cover.

[0007] Preferably, the horizontal cross-sections of the top cover and the bottom cover are both circular, the horizontal cross-sections of the first side skirt and the second side skirt are both annular, and the outer diameters of the first side skirt and the second side skirt are equal to the maximum diameters of the top cover and the bottom cover.

[0008] Preferably, the inner diameter of the first side skirt is equal to the outer diameter of the second side skirt, and the first and second side skirts can be fixed by mechanical connection.

[0009] Preferably, the mechanical connection is fixed by an external thread and an internal thread connection, the inner wall of the first side skirt is provided with an external thread, and the outer wall of the second side skirt is provided with an internal thread.

[0010] Preferably, the through channel includes a first through hole, a second through hole, a third through hole, and a fourth through hole. The horizontal cross-sections of the first through hole, the second through hole, the third through hole, and the fourth through hole are all circular. The circles have the same diameter and their centers are located on the same vertical straight line. The first through hole is located at the center of the top cover, the second through hole is located at the center of the bottom cover, the third through hole is located at the center of the connecting piece, and the fourth through hole is located at the center of the medical silicone.

[0011] Preferably, the elastic pressure plate is made of 316 stainless steel, the longitudinal section of the elastic pressure plate is C-shaped, and the bottom of the elastic pressure plate slides in contact with the top surface of the bottom cover.

[0012] Preferably, the connection between the elastic pressure plate and the top cover is located at the edge of the first through hole, and there are four elastic pressure plates arranged in a ring around the center of the first through hole.

[0013] Preferably, the connecting piece is made of a composite material comprising 5-20 parts by weight of a silane coupling agent and 80-95 parts by weight of polyethylene glycol.

[0014] A method of using an umbilical vascular catheter fixation device includes the following steps:

[0015] S1. After the umbilical vascular catheter is placed, the outer part of the umbilical vascular catheter is passed through the fourth through hole, the third through hole and the second through hole.

[0016] S2. Fix the bottom of the medical silicone to the skin surface around the navel;

[0017] S3. Pass the outer section of the umbilical vascular catheter through the inside of the first through hole again;

[0018] S4. Bring the external thread on the inner wall of the first side skirt close to the internal thread on the outer wall of the second side skirt, twist the first side skirt to move the first through hole downward, thereby forcing the elastic pressure plate to bend, so that the side wall of the elastic pressure plate contacts the umbilical vascular catheter, thereby fixing the umbilical vascular catheter.

[0019] Working principle: The umbilical vascular catheter is confined within the device using the third, fourth, first, and second through holes; the external thread on the inner wall of the first side skirt connects with the internal thread on the outer wall of the second side skirt, thus fixing the top cover to the top of the bottom cover; simultaneously, by twisting the first side skirt, the distance between the top and bottom covers is changed, causing the elastic pressure plate to bend; by adjusting the distance between the top and bottom covers, the degree of bending of the elastic pressure plate can be adjusted, thus facilitating the fixation of catheters of different sizes; the connecting piece effectively fixes the bottom cover to the surface of the medical silicone; the medical silicone effectively fixes the entire device to the skin surface.

[0020] This invention provides a device and method for fixing an umbilical vascular catheter. It has the following beneficial effects:

[0021] 1. This invention utilizes the second side skirt on the upper surface of the bottom cover to connect conveniently with the first side skirt on the lower surface of the top cover via external and internal threads. The C-shaped longitudinal section of the elastic pressure plate effectively fixes the umbilical vascular catheter. Simultaneously, twisting the first side skirt adjusts the distance between the top and bottom covers, thereby conveniently adjusting the bending amplitude of the elastic pressure plate to accommodate umbilical vascular catheters of different sizes, thus solving the problem of cumbersome operation of traditional umbilical vascular catheter fixing devices.

[0022] 2. The present invention uses medical-grade silicone to provide effective support for the upper structure. At the same time, the medical-grade silicone has strong plasticity and can fit tightly to the skin of the navel, thereby reducing the gap between the device and the skin. In addition, the medical-grade silicone has good biocompatibility, thus reducing irritation to the newborn's skin, thereby achieving the purpose of secure fixation.

[0023] 3. The connecting piece of this invention is made of a composite material composed of 5-20 parts by weight of silane coupling agent and 80-95 parts by weight of polyethylene glycol. These two materials are relatively inexpensive. The overall device has a simple structural design, requiring no complex processing technology or expensive raw materials. Compared with traditional specialized umbilical cord clamps, it effectively reduces costs and is more suitable for widespread clinical application. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of an umbilical vascular catheter fixation device proposed in this invention;

[0025] Figure 2 This is a schematic diagram of the structural installation of an umbilical vascular catheter fixation device proposed in this invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the connecting piece of the umbilical vascular catheter fixation device proposed in this invention;

[0027] Figure 4 This is a three-dimensional structural diagram of the medical silicone part of the umbilical vascular catheter fixation device proposed in this invention;

[0028] Figure 5 This is a schematic diagram of the upper structure of the top cover of the umbilical vascular catheter fixation device proposed in this invention;

[0029] Figure 6 This is a schematic diagram of the lower part of the top cover of the umbilical vascular catheter fixation device proposed in this invention;

[0030] Figure 7 This is a three-dimensional structural diagram of the bottom cover and second side skirt of the umbilical vascular catheter fixation device proposed in this invention;

[0031] Figure 8 This is a flowchart illustrating the use of an umbilical vascular catheter fixation device proposed in this invention.

[0032] Among them, 1. First through hole; 2. Elastic pressure plate; 3. Top cover; 4. First side skirt; 5. Medical silicone; 6. Second through hole; 7. Second side skirt; 8. Internal thread; 9. Connecting piece; 10. External thread; 11. Bottom cover; 12. Third through hole; 13. Fourth through hole. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see the appendix Figure 1 -Appendix Figure 2 This invention provides an umbilical vascular catheter fixation device, including an elastic pressure plate 2, a top cover 3, a bottom cover 11, and medical silicone 5. The top of the elastic pressure plate 2 is fixedly connected to the bottom surface of the top cover 3. The bottom surface of the top cover 3 and the top surface of the bottom cover 11 are both fixedly connected with a connecting structure. The top cover 3 can be fixed to the upper part of the bottom cover 11 through the connecting structure. The bottom of the bottom cover 11 is connected to the medical silicone 5 through a connecting piece 9. The connecting piece 9, the top cover 3, the bottom cover 11, and the medical silicone 5 are all provided with through channels.

[0035] Specifically, the elastic clamp 2, in conjunction with the top cover 3 and the bottom cover 11, secures the umbilical vascular catheter. Made of 316 stainless steel, the elastic clamp 2 possesses excellent elasticity and can buffer external forces. The elastic clamp 2 provides cushioning protection; when the newborn's movements cause the catheter to be pulled, the elastic clamp 2 undergoes elastic deformation, absorbing some of the external force and preventing the catheter from shifting due to excessive force or causing damage to the newborn's umbilical region, thus protecting the newborn's safety and ensuring the normal use of the catheter. The elastic clamp 2 also adapts to changes in the catheter's position. The umbilical vascular catheter may shift position due to the newborn's movements; the elasticity of the elastic clamp 2 allows it to flexibly adapt to these changes. Whether the catheter's angle changes or its position shifts, the elastic clamp 2 can adjust the pressure distribution on the catheter through its own deformation, continuously providing a stable fixing force and ensuring that the entire fixation device effectively secures the catheter under different conditions. The top cover 3 serves a connecting and fixing function. The bottom surface of the top cover 3 is fixedly connected to the top of the elastic pressure plate 2, and the top cover 3 is fixed to the bottom cover 11 via a threaded connection through the first side skirt 4 and the second side skirt 7 of the bottom cover 11. This connection method not only makes the entire device structure stable but also allows control over the fixing force of the elastic pressure plate 2 on the umbilical vascular catheter by adjusting the tightness of the threaded connection. In actual use, medical personnel twist the first side skirt 4, causing the top cover 3 to move relative to the bottom cover 11, thereby adjusting the curvature of the elastic pressure plate 2 to achieve precise fixation of the catheter. The top cover 3 also supports the elastic pressure plate 2, providing stable support and ensuring that the elastic pressure plate 2 can properly perform its function of fixing the umbilical vascular catheter. The top cover 3 also serves a positioning and guiding function. During catheter fixation, the catheter needs to pass through the first through hole 1. The position and size of the first through hole 1 ensure that the catheter is in the center of the device, allowing the elastic pressure plate 2 to apply pressure evenly to the catheter and preventing catheter displacement. This helps improve the stability and reliability of the fixation, reducing the risk of insecure fixation or injury to the newborn due to improper catheter placement. The bottom cover 11 serves as a support and connector. The top surface of the bottom cover 11 is connected to the first side skirt 4 of the bottom surface of the top cover 3 via the second side skirt 7, and the top cover 3 is fixed to the upper part of the bottom cover 11 by a threaded connection, forming a stable overall structure. The bottom of the bottom cover 11 is connected to the medical silicone 5 via the connecting piece 9, constructing a connection system from the skin to the entire fixation device, ensuring a tight fit between the device and the newborn's skin.Medical-grade silicone 5 has a certain degree of adhesiveness, allowing it to firmly adhere to the skin surface around the umbilicus, preventing the entire device from shifting. When fixing the umbilical vascular catheter, it works in conjunction with components such as the elastic pressure plate 2 to ensure the catheter is stably fixed in the correct position, preventing it from falling off or shifting due to the newborn's movements, and ensuring the smooth progress of catheter treatment. Newborn skin is delicate, and the skin around the umbilicus is irregularly shaped. Medical-grade silicone 5 is soft and highly malleable, allowing it to closely conform to the contours of the skin around the umbilicus, reducing gaps between the skin and the device, avoiding damage to the newborn's skin due to friction, and improving wearing comfort. Medical-grade silicone 5 has good biocompatibility, causing minimal irritation to the newborn's skin, effectively reducing the probability of adverse reactions such as allergies. During use, medical-grade silicone 5 forms a barrier between the catheter and the skin, reducing direct friction and pressure from the catheter to the skin, protecting the newborn's delicate skin, and reducing the risk of skin damage. Medical-grade silicone 5 has excellent sealing performance, effectively preventing external bacteria, dust, and other contaminants from contacting the umbilicus and umbilical vascular catheter, reducing the risk of infection.

[0036] See appendix Figure 6 -Appendix Figure 7 The connecting structure includes a first side skirt 4 and a second side skirt 7. The top surface of the first side skirt 4 is fixedly connected to the bottom surface of the top cover 3, and the bottom surface of the second side skirt 7 is fixedly connected to the top surface of the bottom cover 11.

[0037] Specifically, the first side skirt 4 can connect with the second side skirt 7, thereby fixing the top cover 3 to the upper part of the bottom cover 11.

[0038] See appendix Figure 6 -Appendix Figure 7 The horizontal cross-sections of the top cover 3 and the bottom cover 11 are both circular, and the horizontal cross-sections of the first side skirt 4 and the second side skirt 7 are both annular. The outer diameter of the first side skirt 4 and the second side skirt 7 is equal to the maximum diameter of the top cover 3 and the bottom cover 11.

[0039] Specifically, the top cover 3 and the bottom cover 11 have circular horizontal cross-sections, and the first side skirt 4 and the second side skirt 7 have annular horizontal cross-sections with the outer diameter being equal to the maximum diameter of the top cover 3 and the bottom cover 11. This allows the entire device to be subjected to forces more evenly in all directions, effectively dispersing stress, reducing stress concentration points, and lowering the risk of damage to the device due to uneven force. During use, the device may be subjected to external forces from different directions. The circular and annular designs ensure that the overall structure of the device is stable, not easily deformed, and continuously provides a stable fixation environment for the umbilical vascular catheter.

[0040] See appendix Figure 1 -Appendix Figure 2 The inner diameter of the first side skirt 4 is equal to the outer diameter of the second side skirt 7, and the first side skirt 4 and the second side skirt 7 can be fixed by mechanical connection;

[0041] Specifically, the inner diameter of the first side skirt 4 is equal to the outer diameter of the second side skirt 7, and the two are fixed by a mechanical connection. This tight-fitting structure ensures that the top cover 3 and the bottom cover 11 are firmly connected, forming a stable overall frame. The mechanical connection method provides reliable connection strength.

[0042] See appendix Figure 6 -Appendix Figure 7 The mechanical connection is fixed by the external thread 10 and the internal thread 8. The inner wall of the first side skirt 4 is provided with the external thread 10, and the outer wall of the second side skirt 7 is provided with the internal thread 8.

[0043] Specifically, the threaded connection provides a simple and reliable connection method for the top cover 3 and the bottom cover 11. Simply align the external thread 10 on the inner wall of the first side skirt 4 with the internal thread 8 on the outer wall of the second side skirt 7, and then tighten the first side skirt 4 to easily connect the top cover 3 and the bottom cover 11. The operation is convenient and quick, requiring no complex tools. Furthermore, the threaded connection has self-locking properties, generating significant friction after tightening, ensuring the top cover 3 and the bottom cover 11 are tightly fixed together, forming a stable overall structure. This effectively prevents the top cover 3 and the bottom cover 11 from separating during use due to external forces such as neonatal movement, ensuring continuous and stable fixation of the umbilical cord catheter.

[0044] See appendix Figure 2 -Appendix Figure 4 The through-channel includes a first through hole 1, a second through hole 6, a third through hole 12, and a fourth through hole 13. The horizontal cross-sections of the first through hole 1, the second through hole 6, the third through hole 12, and the fourth through hole 13 are all circular. The diameters of the circles are the same and their centers are located on the same vertical straight line. The first through hole 1 is located at the center of the top cover 3, the second through hole 6 is located at the center of the bottom cover 11, the third through hole 12 is located at the center of the connecting piece 9, and the fourth through hole 13 is located at the center of the medical silicone 5.

[0045] Specifically, the second through hole 6 at the center of the bottom cover 11, the first through hole 1 of the top cover 3, the third through hole 12 of the connecting piece 9, and the fourth through hole 13 of the medical silicone 5 are all located on the same vertical line and have the same diameter. This allows the umbilical vascular catheter to be accurately guided and positioned when passing through these through holes, ensuring that the catheter is in the center of the device. This facilitates the elastic pressure plate 2 to apply force evenly to fix the catheter, prevents catheter displacement, and improves the stability and reliability of the fixation effect.

[0046] See appendix Figure 5 and attached Figure 6 The elastic pressure plate 2 is made of 316 stainless steel. The longitudinal section of the elastic pressure plate 2 is C-shaped. The bottom of the elastic pressure plate 2 slides in contact with the top surface of the bottom cover 11.

[0047] Specifically, the elastic clamp 2 is made of 316 stainless steel, which has good biocompatibility and will not harm newborns. The longitudinal section of the elastic clamp 2 is C-shaped. The C-shaped structure gives the elastic clamp 2 good elastic deformation ability. When the top cover 3 moves relative to the bottom cover 11 through the threaded connection, the elastic clamp 2 bends, and its sidewall contacts the umbilical vascular catheter and generates pressure, thereby fixing the catheter. Due to the elasticity of the C-shaped structure, the clamp can adjust the applied pressure according to the thickness of the catheter and actual needs, ensuring a firm fixation without damaging the catheter or the newborn's umbilical region due to excessive pressure. Moreover, this elasticity can also buffer external forces when the newborn moves, reducing the risk of catheter displacement or dislodgement. The bottom of the elastic clamp 2 slides in contact with the top surface of the bottom cover 11, allowing the elastic clamp 2 to flexibly adjust its position as the top cover 3 moves during device installation. When medical staff twist the first side skirt 4 to move the top cover 3 down, the elastic clamp 2 can slide smoothly on the top surface of the bottom cover 11 without jamming, ensuring uniform contact and stable fixation between the elastic clamp 2 and the catheter. In subsequent use, if it is necessary to readjust the fixing force, this sliding connection method is easy to operate and improves the convenience of use.

[0048] See appendix Figure 5 and attached Figure 6 The connection between the elastic pressure plate 2 and the top cover 3 is located at the edge of the first through hole 1. There are four elastic pressure plates 2 arranged in a ring around the center of the first through hole 1.

[0049] Specifically, this allows the elastic pressure pads 2 to apply pressure to the umbilical catheter passing through the first through-hole 1 from multiple directions, ensuring that the catheter is subjected to uniform force in all directions. Compared to a single or fewer pressure pads, four pressure pads can better wrap around the catheter, preventing the catheter from shifting or tilting during fixation, thereby providing a stable and balanced fixation force and effectively preventing the catheter from shifting or falling out.

[0050] See appendix Figure 5 and attached Figure 6 The connecting piece 9 is made of composite material, which includes 5-20 parts by weight of silane coupling agent and 80-95 parts by weight of polyethylene glycol;

[0051] Specifically, the silane coupling agent can form chemical bonds at the interfaces of different materials. The connecting piece 9 is tightly connected to the bottom cap 11 and the medical silicone 5 through it. The hydrolyzable groups in the silane coupling agent molecule hydrolyze into silanol groups, which then condense with the hydroxyl groups on the surface of the bottom cap 11 to form stable silicon-oxygen bonds. Simultaneously, the non-hydrolyzable groups react or interact with the organic groups in the medical silicone 5, enhancing the bonding force between the two and making the entire fixation device structure stable, preventing component separation from affecting catheter fixation. Polyethylene glycol has good hydrophilicity and chemical stability, which can improve the compatibility between the silane coupling agent and the bottom cap 11 and the medical silicone 5. As a high-molecular polymer, in the composite material system of the connecting piece 9, it reduces the interfacial tension between different materials, allowing the silane coupling agent to be more uniformly dispersed, avoiding phase separation due to poor compatibility, ensuring the overall stability of the connecting piece 9, and maintaining stable connections between the various components of the device.

[0052] See appendix Figure 8 This invention provides a method for using an umbilical vascular catheter fixation device, comprising the following steps:

[0053] S1. After the umbilical vascular catheter is placed, the outer part of the umbilical vascular catheter is passed through the fourth through hole 13, the third through hole 12 and the second through hole 6.

[0054] S2. Fix the bottom of the medical silicone 5 to the skin surface around the navel;

[0055] S3. Pass the outer section of the umbilical vascular catheter through the inside of the first through hole 1 again;

[0056] S4. Bring the external thread 10 on the inner wall of the first side skirt 4 close to the internal thread 8 on the outer wall of the second side skirt 7, twist the first side skirt 4 to move the first through hole 1 downward, thereby forcing the elastic pressure plate 2 to bend, so that the side wall of the elastic pressure plate 2 contacts the umbilical vascular catheter, thereby fixing the umbilical vascular catheter.

[0057] Specifically, S1 is the base installation step, which provides initial positioning guidance for the subsequent fixation of the catheter; S2 is the adhesion step, which fixes the medical silicone 5 to the skin surface around the umbilicus, building a stable support base for the entire fixation device; S3 is the fixation ring installation step, which further precisely positions the catheter, allowing the elastic pressure plate 2 to apply pressure evenly to the catheter, preventing catheter displacement, ensuring the uniformity and stability of the fixation effect, and improving the reliability of fixation; S4 is the fastening connection step, which uses a threaded connection to adjust the elastic pressure plate 2, allowing flexible control of the fixation force according to actual needs. This ensures that the catheter is firmly fixed, preventing displacement or detachment, and also avoids damage to the catheter or the newborn's umbilicus due to excessive pressure, ensuring the effectiveness and safety of fixation; thus, it further demonstrates the simplicity and convenience of the overall use of the device.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for fixing an umbilical vascular catheter, comprising an elastic pressure plate (2), a top cover (3), a bottom cover (11), and medical silicone (5), characterized in that, The top of the elastic pressure plate (2) is fixedly connected to the bottom surface of the top cover (3). The bottom surface of the top cover (3) and the top surface of the bottom cover (11) are both fixedly connected with a connecting structure. The top cover (3) can be fixed to the upper part of the bottom cover (11) through the connecting structure. The bottom of the bottom cover (11) is connected to the medical silicone (5) through the connecting piece (9). The connecting piece (9), the top cover (3), the bottom cover (11) and the medical silicone (5) are all provided with through channels. The connecting structure includes a first side skirt (4) and a second side skirt (7). The top surface of the first side skirt (4) is fixedly connected to the bottom surface of the top cover (3), and the bottom surface of the second side skirt (7) is fixedly connected to the top surface of the bottom cover (11). The inner diameter of the first side skirt (4) is equal to the outer diameter of the second side skirt (7), and the first side skirt (4) and the second side skirt (7) can be fixed by mechanical connection; The mechanical connection is fixed by an external thread (10) and an internal thread (8) threaded connection. The inner wall of the first side skirt (4) is provided with an external thread (10), and the outer wall of the second side skirt (7) is provided with an internal thread (8). The elastic pressure plate (2) is made of 316 stainless steel. The longitudinal section of the elastic pressure plate (2) is C-shaped. The bottom of the elastic pressure plate (2) slides in contact with the top surface of the bottom cover (11).

2. The umbilical vascular catheter fixation device according to claim 1, characterized in that, The horizontal cross-sections of the top cover (3) and the bottom cover (11) are both circular, and the horizontal cross-sections of the first side skirt (4) and the second side skirt (7) are both annular. The outer diameter of the first side skirt (4) and the second side skirt (7) is equal to the maximum diameter of the top cover (3) and the bottom cover (11).

3. The umbilical vascular catheter fixation device according to claim 1, characterized in that, The through channel includes a first through hole (1), a second through hole (6), a third through hole (12), and a fourth through hole (13). The horizontal cross-sections of the first through hole (1), the second through hole (6), the third through hole (12), and the fourth through hole (13) are all circular. The diameters of the circles are the same and their centers are located on the same vertical straight line. The first through hole (1) is located at the center of the top cover (3), the second through hole (6) is located at the center of the bottom cover (11), the third through hole (12) is located at the center of the connecting piece (9), and the fourth through hole (13) is located at the center of the medical silicone (5).

4. The umbilical vascular catheter fixation device according to claim 3, characterized in that, The connection between the elastic pressure plate (2) and the top cover (3) is located at the edge of the first through hole (1). There are four elastic pressure plates (2) arranged in a ring around the center of the first through hole (1).

5. The umbilical vascular catheter fixation device according to claim 1, characterized in that, The connecting piece (9) is made of a composite material, which includes 5-20 parts by weight of silane coupling agent and 80-95 parts by weight of polyethylene glycol.

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