An anti-infection and anti-coagulation central venous catheter

Abstract

The present invention discloses an anti-infection and anti-coagulation central venous catheter, which is applied in the technical field of central venous catheters. By setting a sealing mechanism, through the combined use of a sealing component and a transmission component, the transmission component can drive the sealing component to achieve the opening and closing state of the pipeline, and hide the sealing position to avoid the situation of the conventional stopcock falling off, thereby ensuring that blood will not flow out. By setting an anti-coagulation component, anti-coagulation drugs can be injected into the anti-coagulation component, and these drugs can be slowly released to the use site, so the anti-coagulation effect can be achieved. Moreover, by setting an anti-infection drug coating on the surface of the anti-coagulation component, the antibacterial and bacteriostatic effects can be achieved, thereby prolonging the indwelling time of the central venous catheter.

Description

Technical Field

[0001] The present invention belongs to the technical field of central venous catheters, and particularly relates to an anti-infection and anti-coagulation central venous catheter. Background Art

[0002] Limited by the usage mode of the central venous catheter, when it is in use, it will face various usage situations, but not limited to the following one. More specifically, especially when it is used as an indwelling catheter, it has a long indwelling time in the human body. Therefore, blood coagulation is likely to occur, and it is also prone to inflammation at the puncture site due to bacterial growth, which is not conducive to subsequent treatment work.

[0003] Moreover, the central venous catheter usually transports medicinal liquids and nutrients. To prevent external leakage, a stop clamp is often used to close the delivery pipeline. However, this fixing method is relatively simple. For some restless patients, it is easy to cause the stop clamp to fall off, thus losing the sealing effect on the pipeline and being not conducive to use.

[0004] Combining the above two problem entry points, it can be found that when the existing devices on the market are in use, it is very difficult to avoid the above problems at the same time. Moreover, even if they can be solved, external devices need to be connected, thus unable to achieve the desired effect. Therefore, we propose an anti-infection and anti-coagulation central venous catheter that can make the central venous catheter have anti-coagulation, anti-infection and prevent blood from flowing out when in use. Summary of the Invention

[0005] The purpose of the present invention is directed to an existing central venous catheter. Its advantage is that through the setting of a sealing mechanism, under the combined use of a sealing component and a transmission component, the transmission component can drive the sealing component to achieve the opening and closing state of the pipeline, and hide the sealing position to avoid the situation of the conventional stop clamp falling off, thus ensuring that blood will not flow out. By setting an anti-coagulation component, anti-coagulation drugs can be injected into the anti-coagulation component, and these drugs can be slowly released to the use site, so the anti-coagulation effect can be achieved. Moreover, by setting an anti-infection drug coating on the surface of the anti-coagulation component, the antibacterial and bacteriostatic effect can be achieved, thereby prolonging the indwelling time of the central venous catheter.

[0006] The above technical purpose of the present invention is achieved through the following technical solutions: An anti-infection and anti-coagulation central venous catheter includes a housing. Two connecting pipes are arranged on the left side of the housing. A central catheter is arranged on the right side of the housing. A sealing mechanism is sleeved on the right side of the surface of the connecting pipe. The top of the sealing mechanism extends to the top of the housing. The left side of the central catheter is communicated with a Y-shaped pipe. The Y-shaped pipe is communicated with the central catheter. An anti-coagulation component is sleeved on the surface of the central catheter;

[0007] The plugging mechanism includes two closing components, the closing components are respectively sleeved on the surfaces of the connecting pipe and the Y-shaped pipe, a transmission component is bolted to the top of the housing, and the bottom of the transmission component extends into the interior of the housing and is used in cooperation with the closing component.

[0008] With the above technical solution, by setting the closing mechanism, under the cooperation of the closing component and the transmission component, the transmission component can drive the closing component to realize the opening and closing state of the pipeline, and hide the closing position to avoid the situation of the conventional stop clamp falling off, so as to ensure that the blood will not flow out. By setting the anticoagulant component, anticoagulant drugs can be injected into the anticoagulant component, and these drugs can be slowly released to the use site, so the anticoagulant effect can be achieved. Moreover, by setting an anti-infection drug coating on the surface of the anticoagulant component, the antibacterial and bacteriostatic effects can be achieved, thereby prolonging the indwelling time of the central venous catheter.

[0009] The present invention is further configured as: the closing component includes a connecting cylinder, the connecting cylinder is respectively sleeved on the surfaces of the connecting pipe and the Y-shaped pipe, a main shaft is rotatably connected to the inside of the connecting cylinder, one side of the main shaft away from the inner wall of the connecting cylinder extends to the outside of the connecting cylinder, plugging plates are welded to the top and bottom of the main shaft, the surface of the plugging plate contacts the inner wall of the connecting cylinder, and a gear is sleeved on the surface of the main shaft, and the gear is used in cooperation with the transmission component.

[0010] With the above technical solution, by setting the closing component, when drugs or nutrients need to be transported, the transmission component can move downward in the housing. Under the cooperation of the transmission component and the gear, the gear drives the main shaft to rotate, so that the main shaft drives the two plugging plates to rotate 90 degrees, and the plugging plates are adjusted from the vertical state to the horizontal state, releasing the plugging work on the connecting cylinder, so as to facilitate the transportation of drugs or nutrients. When the connecting cylinder needs to be plugged, only need to move the transmission component upward to reset the plugging plate.

[0011] The present invention is further configured as: a sealing strip is adhered to one side of the plugging plate close to the inner wall of the connecting cylinder, and the surface of the sealing strip contacts the inner wall of the connecting cylinder.

[0012] With the above technical solution, by setting the sealing strip, the sealing effect of the contact part between the plugging plate and the connecting cylinder can be achieved, and the situation of pressure leakage can be avoided.

[0013] The present invention is further configured as: a sealing ring is sleeved on the surface of the main shaft, and the surface of the sealing ring is in close contact with the inner wall of the connecting cylinder.

[0014] With the above technical solution, by setting the sealing ring, the connection part between the main shaft and the connecting cylinder can be sealed to prevent leakage.

[0015] The present invention is further configured as follows: The transmission assembly includes a fixed plate bolted to the top of the housing. A movable plate is slidably connected to the top of the fixed plate. A screw sleeve is rotatably connected to the top of the movable plate. A screw rod is threadedly connected to the inside of the screw sleeve. The bottom of the screw rod extends into the housing and is bolted with a toothed plate, and the toothed plate meshes with the gear.

[0016] By adopting the above technical solution, by providing the transmission assembly, the screw sleeve can be rotated, and through the threaded cooperation between the screw sleeve and the screw rod, the screw rod can drive the toothed plate to move downward. Therefore, under the meshing connection between the toothed plate and the gear, it is convenient to drive the gear to rotate, so as to facilitate the realization or release of the sealing work of the connecting cylinder.

[0017] The present invention is further configured as follows: A connecting ring is bolted to the bottom of the screw sleeve, and a bearing seat is bolted to the inside of the connecting ring. The bottom of the bearing seat is bolted to the inner wall of the movable plate.

[0018] By adopting the above technical solution, by providing the connecting ring and the bearing seat, while not affecting the normal rotation of the screw sleeve, it can be restricted to its use position to prevent it from detaching.

[0019] The present invention is further configured as follows: A limiting block is welded to the bottom of the movable plate. The surface of the limiting block is in sliding contact with the inner wall of the fixed plate. A limiting groove for cooperating with the limiting block is formed in the top of the fixed plate.

[0020] By adopting the above technical solution, by providing the limiting block and the limiting groove, the moving track of the movable plate can be restricted to ensure its stable movement.

[0021] The present invention is further configured as follows: The anti-coagulation assembly includes a sleeve sleeved on the surface of the central catheter. A cavity is formed between the inner wall of the sleeve and the surface of the central catheter. A hollow tube penetrates through the cavity. A fixing bladder is sleeved on the surface of the sleeve. One end of the hollow tube penetrates through the inside of the sleeve and extends into the fixing bladder.

[0022] By adopting the above technical solution, by providing the anti-coagulation assembly, an anti-coagulant liquid medicine can be injected into the hollow tube. Under the continuous injection of the medicine, the fixing bladder will slowly expand due to the pressure. Since the fixing bladder is made of a dialysis membrane material, which is a porous permeable membrane, under the action of the pressure seat, the anti-coagulant medicine will penetrate through the fixing bladder and be slowly released at the use position, so as to achieve the anti-coagulation effect. Moreover, the hollow tube is connected with a one-way valve, so there will be no situation of medicine backflow.

[0023] The present invention is further configured as follows: The sleeve includes a base material layer, and an antibacterial layer is provided on the surface of the base material layer.

[0024] With the above technical solution, by setting the sleeve to be composed of a base material layer and an antibacterial layer, it can have the function of antibacterial and bacteriostatic, thereby prolonging the indwelling time of the central catheter.

[0025] The present invention is further configured as: the base material layer is made of a silicone material, and the antibacterial layer is a silver ion antibacterial solution and is uniformly coated on the surface of the base material layer.

[0026] With the above technical solution, by setting the base material layer to be made of a silicone material, the softness of the sleeve during use can be ensured. By having the antibacterial layer as a silver ion antibacterial solution and being uniformly coated on the surface of the base material layer, the sleeve can have the effect of antibacterial and bacteriostatic.

[0027] In summary, the present invention has the following beneficial effects:

[0028] 1. By setting the closing mechanism, through the coordinated use of the closing component and the transmission component, the transmission component can drive the closing component to achieve the opening and closing state of the pipeline, and hide the closing position to avoid the situation of the conventional stop clamp falling off, thereby ensuring that the blood will not flow out.

[0029] 2. By setting the anticoagulant component, anticoagulant drugs can be injected into the anticoagulant component, and these drugs can be slowly released to the use site, so the anticoagulant effect can be achieved. Moreover, by setting an anti-infection drug coating on the surface of the anticoagulant component, the antibacterial and bacteriostatic effect can be achieved, thereby prolonging the indwelling time of the central venous catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is the overall structural schematic diagram of the present invention;

[0031] Figure 2 is the structural schematic diagram of the housing of the present invention;

[0032] Figure 3 is the connection schematic diagram of the plugging mechanism of the present invention;

[0033] Figure 4 is the structural schematic diagram of the closing component of the present invention;

[0034] Figure 5 is the partial structural schematic diagram of the closing component of the present invention;

[0035] Figure 6 is the structural schematic diagram of the transmission component of the present invention;

[0036] Figure 7 is the partial structural cross-sectional schematic diagram of the transmission component of the present invention;

[0037] Figure 8 is the connection structural schematic diagram of the anticoagulant component and the central catheter of the present invention;

[0038] Figure 9 It is a schematic diagram of the decomposition of the casing of the present invention.

[0039] Reference numerals: 1, housing; 2, connecting pipe; 3, central catheter; 4, blocking mechanism; 401, closing assembly; 4011, connecting cylinder; 4012, main shaft; 4013, blocking plate; 4014, gear; 402, transmission assembly; 4021, fixing plate; 4022, moving plate; 4023, screw sleeve; 4024, screw rod; 4025, toothed plate; 5, Y-shaped pipe; 6, anticoagulant component; 601, casing; 6011, base material layer; 6012, antibacterial layer; 602, cavity; 603, hollow pipe; 604, fixing bladder; 7, sealing strip; 8, sealing ring; 9, connecting ring; 10, bearing seat; 11, limiting block; 12, limiting groove. Detailed implementation manners

[0040] The present invention will be further described in detail below with reference to the accompanying drawings.

[0041] Embodiment 1:

[0042] Refer to Figures 1-7 , an anti-infection and anti-coagulation central venous catheter, including a housing 1, two connecting pipes 2 are arranged on the left side of the housing 1, a central catheter 3 is arranged on the right side of the housing 1, the right side of the surface of the connecting pipe 2 is sleeved with a blocking mechanism 4, the top of the blocking mechanism 4 extends to the top of the housing 1, the left side of the central catheter 3 is communicated with a Y-shaped pipe 5, and the Y-shaped pipe 5 is communicated with the central catheter 3;

[0043] The blocking mechanism 4 includes two closing assemblies 401, the closing assemblies 401 are respectively sleeved on the surfaces of the connecting pipe 2 and the Y-shaped pipe 5, a transmission assembly 402 is bolted to the top of the housing 1, the bottom of the transmission assembly 402 extends into the housing 1 and is used in cooperation with the closing assembly 401. By setting the closing mechanism, under the cooperation of the closing assembly 401 and the transmission assembly 402, the transmission assembly 402 can drive the closing assembly 401 to realize the opening and closing state of the pipeline, and hide the closing position to avoid the situation of the conventional stop clamp falling off, so as to ensure that the blood will not flow out.

[0044] Such as Figure 4As shown, the sealing component 401 includes a connecting cylinder 4011, which is respectively sleeved on the surfaces of the connecting tube 2 and the Y-shaped tube 5, and the main shaft 4012 is rotatably connected inside the connecting cylinder 4011. The main shaft 4012 extends to the outside of the connecting cylinder 4011 away from the inner wall of the connecting cylinder 4011. The top and bottom of the main shaft 4012 are welded with a blocking plate 4013, and the surface of the blocking plate 4013 contacts the inner wall of the connecting cylinder 4011. The surface of the main shaft 4012 is sleeved with a gear 4014, and the gear 4014 is used in conjunction with the transmission component 402. By setting the sealing component 40 1. When it is necessary to deliver medicine or nutrients, the transmission component 402 can be moved downward in the housing 1. Under the cooperation of the transmission component 402 and the gear 4014, the gear 4014 drives the main shaft 4012 to rotate, so that the main shaft 4012 drives the two blocking plates 4013 to rotate ninety degrees, so that the blocking plates 4013 are adjusted from a vertical state to a horizontal state, and the blocking work on the connecting cylinder 4011 is released, so as to facilitate the delivery of medicine or nutrients. When it is necessary to block the connecting cylinder 4011, it is only necessary to move the transmission component 402 upward to reset the blocking plates 4013.

[0045] like Figure 5 As shown, a sealing strip 7 is bonded to one side of the sealing plate 4013 close to the inner wall of the connecting tube 4011, and the surface of the sealing strip 7 is in contact with the inner wall of the connecting tube 4011. By providing the sealing strip 7, a sealing effect can be achieved on the contact portion between the sealing plate 4013 and the connecting tube 4011 to avoid pressure leakage.

[0046] like Figure 5 As shown, a sealing ring 8 is sleeved on the surface of the main shaft 4012, and the surface of the sealing ring 8 is in close contact with the inner wall of the connecting tube 4011. By providing the sealing ring 8, the connection between the main shaft 4012 and the connecting tube 4011 can be sealed to prevent leakage.

[0047] like Figure 6 As shown, the transmission assembly 402 includes a fixed plate 4021, which is bolted to the top of the shell 1, and the top of the fixed plate 4021 is slidably connected to a movable plate 4022, and the top of the movable plate 4022 is rotatably connected to a screw sleeve 4023, and the internal thread of the screw sleeve 4023 is connected to a screw rod 4024, and the bottom of the screw rod 4024 extends to the inside of the shell 1 and is bolted to a toothed plate 4025, and the toothed plate 4025 is meshed with the gear 4014. By setting the transmission assembly 402, the screw sleeve 4023 can be rotated, and the screw sleeve 4023 can cooperate with the thread of the screw rod 4024, so that the screw rod 4024 can drive the toothed plate 4025 to move downward. Therefore, under the meshing connection between the toothed plate 4025 and the gear 4014, it is easy to drive the gear 4014 to rotate, thereby facilitating the implementation or release of the blocking work of the connecting cylinder 4011.

[0048] As Figure 7 shown, a connecting ring 9 is bolted to the bottom of the screw sleeve 4023, a bearing seat 10 is bolted inside the connecting ring 9, and the bottom of the bearing seat 10 is bolted to the inner wall of the moving plate 4022. By providing the connecting ring 9 and the bearing seat 10, while not affecting the normal rotation of the screw sleeve 4023, it can be restricted in its use position to prevent it from detaching.

[0049] As Figure 6 shown, a limiting block 11 is welded to the bottom of the moving plate 4022, the surface of the limiting block 11 is in sliding contact with the inner wall of the fixed plate 4021, and a limiting groove 12 for cooperating with the limiting block 11 is provided at the top of the fixed plate 4021. By providing the limiting block 11 and the limiting groove 12, the moving track of the moving plate 4022 can be restricted to ensure its stable movement.

[0050] Brief description of the use process: The two connecting pipes 2 are respectively set as a drug delivery pipe and a parenteral nutrition pipe. When the connecting pipe 2 used for drug delivery is in use, the moving plate 4022 can drive the limiting block 11 to move on the top of the fixed plate 4021, so that the toothed plate 4025 meshes with the front gear 4014. By rotating the screw sleeve 4023 and through the thread fit between the screw sleeve 4023 and the screw rod 4024, the screw rod 4024 can drive the toothed plate 4025 to move downward. Therefore, under the meshing connection between the toothed plate 4025 and the gear 4014, it is convenient to drive the gear 4014 to rotate, so that the gear 4014 drives the main shaft 4012 to rotate, and thus the main shaft 4012 drives the two blocking plates 4013 to rotate by ninety degrees, adjusting the blocking plates 4013 from the vertical state to the horizontal state, releasing the blocking of the connecting cylinder 4011, and then injecting the drug into the front connecting pipe 2. When it is necessary to close the front connecting pipe 2, the screw sleeve 4023 can be reversed to drive the screw rod 4024 to drive the toothed plate 4025 to move upward, so that the gear 4014 drives the main shaft 4012 to reverse, and the blocking plate 4013 can be reset. When the connecting pipe 2 is used for parenteral nutrition, the moving plate 4022 can be moved to the rear side of the fixed plate 4021 to make the toothed plate 4025 mesh with the rear gear 4014, and then repeat the above steps to release or implement the blocking of the rear connecting pipe 2.

[0051] Example 2:

[0052] Refer to Figures 8-9, including a housing 1. Two connecting pipes 2 are arranged on the left side of the housing 1, and a central catheter 3 is arranged on the right side of the housing 1. An anticoagulation component 6 is sleeved on the surface of the central catheter 3. By setting the anticoagulation component 6, anticoagulant drugs can be injected into the anticoagulation component 6, and these drugs can be slowly released to the use site, so that the anticoagulation effect can be achieved. Moreover, by setting an anti-infection drug coating on the surface of the anticoagulation component 6, the antibacterial and bacteriostatic effects can be achieved, thereby prolonging the indwelling time of the central venous catheter.

[0053] As Figure 8 shown, the anticoagulation component 6 includes a sleeve 601 sleeved on the surface of the central catheter 3. A cavity 602 is formed between the inner wall of the sleeve 601 and the surface of the central catheter 3. A hollow tube 603 penetrates through the inside of the cavity 602. A fixing bladder 604 is sleeved on the surface of the sleeve 601. One end of the hollow tube 603 penetrates through the inside of the sleeve 601 and extends into the inside of the fixing bladder 604. By setting the anticoagulation component 6, anticoagulant liquid drugs can be injected into the hollow tube 603. Under the continuous injection of the drugs, the fixing bladder 604 will slowly expand due to the pressure. Since the fixing bladder 604 is made of a dialysis membrane material, which is a porous permeable membrane, under the action of the pressure seat, the anticoagulant drugs will penetrate through the fixing bladder 604 and be slowly released at the use position, so as to achieve the anticoagulation effect. Moreover, the hollow tube 603 is connected with a one-way valve, so there will be no drug reflux.

[0054] As Figure 9 shown, the sleeve 601 includes a base material layer 6011, and an antibacterial layer 6012 is arranged on the surface of the base material layer 6011. By setting the sleeve 601 to be composed of the base material layer 6011 and the antibacterial layer 6012, it can have the antibacterial and bacteriostatic effects, thereby prolonging the indwelling time of the central catheter 3.

[0055] As Figure 9 shown, the base material layer 6011 is made of silica gel material, and the antibacterial layer 6012 is a silver ion antibacterial solution, which is evenly coated on the surface of the base material layer 6011. By setting the base material layer 6011 to be made of silica gel material, the use flexibility of the sleeve 601 can be ensured. By setting the antibacterial layer 6012 to be a silver ion antibacterial solution and evenly coating it on the surface of the base material layer 6011, the sleeve 601 can have the antibacterial and bacteriostatic effects.

[0056] Brief description of the usage process: After the central catheter 3 is punctured into the blood vessel, anticoagulant liquid medicine can be injected into the hollow tube 603. Under the continuous injection of the medicine, the fixing bladder 604 slowly expands due to the pressure. Since the fixing bladder 604 is made of dialysis membrane material, which is a porous permeable membrane, under the action of the pressure seat, the anticoagulant medicine will penetrate through the fixing bladder 604 and be slowly released at the using position, thus achieving the effect of anticoagulation. Moreover, since the hollow tube 603 is connected with a one-way valve, there will be no backflow of the medicine. The sleeve 601 is composed of a base material layer 6011 and an antibacterial layer 6012, which can make it have the function of antibacterial and bacteriostatic, thus prolonging the indwelling time of the central catheter 3.

[0057] This specific embodiment is only an explanation of the present invention, and it is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions according to needs, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. An anti-infection and anticoagulation central venous catheter, comprising a housing (1), characterized in that: On the left side of the housing (1), there are two connecting pipes (2). On the right side of the housing (1), there is a central conduit (3). On the right side of the surface of the connecting pipe (2), a plugging mechanism (4) is sleeved. The top of the plugging mechanism (4) extends to the top of the housing (1). On the left side of the central conduit (3), a Y-shaped pipe (5) is communicated. The Y-shaped pipe (5) is communicated with the central conduit (3). On the surface of the central conduit (3), an anticoagulant component (6) is sleeved. The plugging mechanism (4) includes two closing components (401). The closing components (401) are respectively sleeved on the surfaces of the connecting pipe (2) and the Y-shaped pipe (5). On the top of the housing (1), a transmission component (402) is bolted. The bottom of the transmission component (402) extends into the interior of the housing (1) and is used in cooperation with the closing component (401). The closing component (401) includes a connecting cylinder (4011). The connecting cylinder (4011) is respectively sleeved on the surfaces of the connecting pipe (2) and the Y-shaped pipe (5). Inside the connecting cylinder (4011), a main shaft (4012) is rotatably connected. One side of the main shaft (4012) away from the inner wall of the connecting cylinder (4011) extends to the outside of the connecting cylinder (4011). At the top and bottom of the main shaft (4012), plugging plates (4013) are welded. The surface of the plugging plate (4013) contacts the inner wall of the connecting cylinder (4011). On the surface of the main shaft (4012), a gear (4014) is sleeved. The gear (4014) is used in cooperation with the transmission component (402). The transmission component (402) includes a fixing plate (4021). The fixing plate (4021) is bolted on the top of the housing (1). On the top of the fixing plate (4021), a moving plate (4022) is slidably connected. On the top of the moving plate (4022), a screw sleeve (4023) is rotatably connected. Inside the screw sleeve (4023), a screw rod (4024) is threadedly connected. The bottom of the screw rod (4024) extends into the interior of the housing (1) and is bolted with a toothed plate (4025). The toothed plate (4025) meshes with the gear (4014). The anticoagulant component (6) includes a sleeve (601). The sleeve (601) is sleeved on the surface of the central conduit (3). A cavity (602) is formed between the inner wall of the sleeve (601) and the surface of the central conduit (3). Inside the cavity (602), a hollow tube (603) penetrates. On the surface of the sleeve (601), a fixing bladder (604) is sleeved. One end of the hollow tube (603) penetrates the inside of the sleeve (601) and extends into the inside of the fixing bladder (604).

2. The anti-infection and anti-coagulation central venous catheter according to claim 1, characterized in that: On one side of the plugging plate (4013) close to the inner wall of the connecting cylinder (4011), a sealing strip (7) is adhered. The surface of the sealing strip (7) contacts the inner wall of the connecting cylinder (4011).

3. The anti-infection and anti-coagulation central venous catheter according to claim 2, characterized in that: On the surface of the main shaft (4012), a sealing ring (8) is sleeved. The surface of the sealing ring (8) is in close contact with the inner wall of the connecting cylinder (4011).

4. The anti-infection and anti-coagulation central venous catheter according to claim 1, characterized in that: A connecting ring (9) is bolted to the bottom of the screw sleeve (4023), a bearing seat (10) is bolted inside the connecting ring (9), and the bottom of the bearing seat (10) is bolted to the inner wall of the moving plate (4022).

5. The anti-infection and anti-coagulation central venous catheter according to claim 1, characterized in that: A limiting block (11) is welded to the bottom of the moving plate (4022), the surface of the limiting block (11) is in sliding contact with the inner wall of the fixed plate (4021), and a limiting groove (12) matched with the limiting block (11) is formed in the top of the fixed plate (4021).

6. The anti-infection and anti-coagulation central venous catheter according to claim 1, characterized in that: The sleeve (601) includes a base material layer (6011), and an antibacterial layer (6012) is arranged on the surface of the base material layer (6011).

7. The anti-infection and anti-coagulation central venous catheter according to claim 6, characterized in that: The base material layer (6011) is made of silica gel material, the antibacterial layer (6012) is a silver ion antibacterial solution and is uniformly coated on the surface of the base material layer (6011).

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