Hemodialysis blood line securement device

Abstract

The application relates to the technical field of hemodialysis nursing, and discloses a hemodialysis blood line fixing device. The hemodialysis nursing catheter fixing device comprises a stand, a bottom disc is fixedly installed at the bottom of the stand, a clamping seat is penetrated through the stand, and an anti-falling assembly is arranged in the bottom disc. The hemodialysis nursing catheter fixing device is provided with a blood line wound around a contact rod on the side wall of the clamping seat, so that when the patient's arm is moved or displaced after being connected with a puncture needle and the blood line is dragged, the contact rod is rotated to release the rolled-up catheter to replace the situation that the catheter is straightened or even tightened under the pulling, so that the arm of the patient is not subjected to excessive pulling force, that is, the puncture needle on the arm of the patient is not subjected to excessive pulling force, the situation that the puncture needle on the arm of the patient is fallen off is avoided, and the safety of the patient during hemodialysis treatment is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hemodialysis nursing, in particular to a hemodialysis blood line fixing device. BACKGROUND

[0002] When performing kidney replacement therapy on uremia patients, hemodialysis is a commonly used treatment method. During the hemodialysis treatment process, a special catheter is often inserted into the patient's body to maintain a complete blood passage to complete the filtration of metabolic waste in the patient's blood and maintain the electrolyte and acid-base balance in the patient's body. The catheter inserted into the patient's body needs a corresponding fixing mechanism to ensure the safety of the catheter to avoid accidental pulling that causes injury to the patient and affects the treatment effect of the patient.

[0003] The existing fixing device for the catheter usually adds a clasp on the outside of the catheter, and a sponge pad or silicone pad is arranged on the inner surface of the clasp to increase the friction force on the catheter to achieve positioning of the catheter, thereby effectively ensuring the safety of the patient during the dialysis treatment process and stable development of the dialysis treatment operation.

[0004] However, in actual use, when the catheter is pulled, even if the clasp with the sponge pad is used to position and clamp the catheter, the corresponding position of the catheter is limited. During treatment, the patient usually does not maintain a posture for a long time. When the patient moves or swings the arm, the needle on the patient's arm is easily pulled out due to the pulling of the catheter, which causes danger during the treatment of the patient. In view of this, we propose a hemodialysis blood line fixing device. SUMMARY

[0005] The purpose of the present application is to provide a hemodialysis blood line fixing device to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a hemodialysis blood line fixing device, comprising a stand and a connecting elastic band, a bottom disc is fixedly installed at the bottom of the stand, a clamping seat is penetrated through the stand, and the clamping seat is fixedly connected with the stand, an elastic band sleeve is fixedly connected at the end of the connecting elastic band, a positioning arc plate is fixedly connected to the middle side wall of the connecting elastic band, one end of an adhesive buckle is fixedly connected to the top of the positioning arc plate, an adhesive piece is fixedly connected to the top of the positioning arc plate, a clamping groove is formed in the upper surface of the clamping seat, a base is slidably installed in the inner surface of the clamping groove, a hinged plate is hingedly connected to the upper surface of the base, an upper cover is fixedly connected to the top of the hinged plate, a drag prevention assembly is arranged on the side wall of the clamping seat, and the drag prevention assembly comprises:

[0007] The side wall of the clamping seat is fixedly provided with a fixed seat, the inner surface of the fixed seat is fixedly connected with a transmission rod, the transmission rod penetrates a connecting seat, and the connecting seat is rotationally connected with the transmission rod, the side wall of the connecting seat is fixedly connected with the end of a volute spring one, and the other end of the volute spring one is fixedly connected to the arc-shaped outer wall of the transmission rod;

[0008] The end of the connecting seat is fixedly connected with the end of a contact rod, the other end of the contact rod is fixedly connected with a plug rod, the side wall of the clamping seat is fixedly provided with a limiting seat, the inner wall of the limiting seat is rotationally connected with a plug disc, the inner wall of the limiting seat is fixedly connected with the end of a volute spring two, and the other end of the volute spring two is fixedly connected to the side wall of the plug disc.

[0009] Preferably, the arc-shaped outer wall of the plug disc is provided with a strip-shaped limiting strip, the inner wall of the limiting seat is provided with a circular rotating groove matched with the shape of the plug disc, and the inner surface of the circular rotating groove is provided with a limiting sliding groove matched with the strip-shaped limiting strip, so that the plug disc can only rotate in the interior of the limiting seat.

[0010] Preferably, the interior of the base is provided with an anti-falling assembly, the upper surface of the base is provided with an accommodating groove, the inner surface of the accommodating groove is fixedly provided with a hinged seat, the side wall of the hinged seat is hingedly connected with the end of a connecting column, the other end of the connecting column is rotationally connected with a silica gel rod, and the arc-shaped outer wall of the silica gel rod is fixedly provided with a suction disc.

[0011] Preferably, a plurality of groups of clamping grooves are arranged in a linear array and uniformly distributed on the upper surface of the clamping seat, and the base is provided corresponding to the clamping grooves.

[0012] Preferably, the upper surface of the base is provided with an arc-shaped groove, the lower side of the upper cover is provided with an arc-shaped groove matched with the arc-shaped groove of the base, and specifically, the arc-shaped grooves of the two groups of upper covers are combined with the arc-shaped grooves of the base to form a complete circular hole, so as to adapt to the erection and installation of the catheter.

[0013] Preferably, the accommodating groove is arranged on the inner surface of the arc-shaped groove of the base, and the accommodating groove is arranged vertically with the arc-shaped groove, so as to facilitate the arrangement of the silica gel rod.

[0014] Preferably, the interior of the silica gel rod is hollow, and a memory metal rod is filled in the hollow cavity of the silica gel rod, so that the silica gel rod can maintain the reset ability when being extruded.

[0015] Preferably, the ejection assembly comprises a telescopic rod, one end of the telescopic rod is fixedly connected to the inner wall of the clamping seat, the other end of the telescopic rod is fixedly connected to the end of the operating rod, one end of the return spring is fixedly connected to the inner wall of the clamping seat, the other end of the return spring is fixedly connected to the end of the operating rod, the end of the pull rod is hingedly connected to the inner wall of the bottom of the base, and the other end of the pull rod is hingedly connected to the inner wall of the bottom of the base.

[0016] Preferably, a rectangular slot with a width matching that of the pull rod is formed in the inner wall of the bottom of the clamping groove, and the pull rod is arranged in an inclined manner in the interior of the clamping seat, so that the base can be pushed upward along the inner wall of the clamping groove by cooperating with the pull rod.

[0017] Compared with the prior art, the blood dialysis blood line fixing device has the following beneficial effects:

[0018] 1. The blood dialysis nursing catheter fixing device is provided with a section of catheter wound around the contact rod on the side wall of the clamping seat, so that when the patient's arm moves or shifts after being connected with a needle and the catheter is dragged, the contact rod rotates to release the wound catheter instead of the catheter being straightened or even tightened, so that the patient's arm is not subjected to excessive pulling force, the needle inserted into the patient's arm is not subjected to excessive pulling force, and the safety of the patient during the blood dialysis operation is ensured.

[0019] 2. The blood dialysis nursing catheter fixing device is provided with an operating rod cooperating with the pull rod, and the top of the clamping groove is provided with an arc surface, so that after the base drives the upper cover to move upward, the base deflects toward the side away from the center of the base, the arc-shaped groove formed in the base is exposed, and the catheter is conveniently installed.

[0020] 3. The blood dialysis nursing catheter fixing device is provided with an anti-dragging assembly to avoid the catheter being excessively dragged during use and causing harm to the patient's body, the connecting seat is taken out by rotating around the transmission rod as the rotating shaft to contact the contact rod, so that the catheter can be conveniently wound around the contact rod, and when the catheter is pulled, the contact rod and the catheter can be inhibited from moving by cooperating with the volute spring II to quickly recover, so as to avoid the catheter being pulled to directly harm the patient's body.

[0021] 4. The hemodialysis nursing catheter fixing device, in order to avoid the internal cavity of the catheter from being occluded after being pulled, the anti-pulling assembly is arranged, the silica gel rod can rotate freely, and a plurality of groups of suction cups are arranged on the outer wall of the silica gel rod, so that the suction cups are attached to the surface of the catheter during installation to adsorb and pull the outer wall of the catheter, when the catheter is pulled externally, the silica gel rod is always attached to the catheter and keeps the internal cavity unobstructed under the action of the memory metal in the silica gel rod, so that the catheter is not occluded after being pulled, and the normal development of dialysis treatment is affected. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the main structure of the application;

[0023] Figure 2 is a schematic diagram of the three-dimensional structure of the clamping seat of the application;

[0024] Figure 3 is a schematic diagram of the sectional structure of the clamping seat of the application;

[0025] Figure 4 is a schematic diagram of the sectional structure of the clamping assembly of the application;

[0026] Figure 5 is a schematic diagram of the anti-pulling assembly of the application;

[0027] Figure 6 is a schematic diagram of the connection of the elastic band and the elastic ring of the application.

[0028] In the figure: 1, stand; 2, base; 3, clamping seat; 4, base; 5, hinged plate; 6, upper cover; 7, containing groove; 8, hinged seat; 9, connecting column; 10, silica gel rod; 11, suction cup; 12, telescopic rod; 13, operating rod; 14, return spring; 15, pull rod; 17, fixing seat; 18, transmission rod; 19, connecting seat; 20, volute spring I; 21, contact rod; 22, plug rod; 23, limiting seat; 24, plug disc; 25, volute spring II; 26, elastic band; 27, elastic ring; 28, positioning arc plate; 29, adhesive buckle; 30, adhesive piece. DETAILED DESCRIPTION

[0029] As Figures 1-6As shown, the present application provides a technical scheme: a hemodialysis blood line fixing device, including a stand 1 and a connecting elastic band 26, the bottom of the stand 1 is fixedly installed with a bottom disc 2, the stand 1 penetrates a clamping seat 3, and the clamping seat 3 is fixedly connected with the stand 1, the end of the connecting elastic band 26 is fixedly connected with an elastic sleeve ring 27, the middle part of the connecting elastic band 26 is fixedly connected with a positioning arc plate 28, one end of the positioning arc plate 28 is fixedly connected with the top of the positioning arc plate 28, the top of the positioning arc plate 28 is fixedly connected with an adhesive piece 30, the upper surface of the clamping seat 3 is provided with a clamping groove, the inner surface of the clamping groove is slidably installed with a base 4, the upper surface of the base 4 is hingedly connected with a hinge plate 5, the top of the hinge plate 5 is fixedly connected with an upper cover 6, the inside of the base 4 is provided with an anti-dropping assembly, the anti-dropping assembly comprises a containing groove 7, the upper surface of the base 4 is provided with the containing groove 7, the inner surface of the containing groove 7 is fixedly installed with a hinge seat 8, the side wall of the hinge seat 8 is hingedly connected with the end of a connecting column 9, the other end of the connecting column 9 is rotatably connected with a silica gel rod 10, and the arc-shaped outer wall of the silica gel rod 10 is fixedly installed with a suction disc 11.

[0030] In an embodiment of the present application, the number of clamping grooves is provided with multiple groups, and the multiple groups of clamping grooves are evenly distributed in a linear array on the upper surface of the clamping seat 3, and the base 4 is correspondingly provided with the clamping grooves, specifically, the width of the clamping groove is matched with the width of the base 4, so that the base 4 can only move in the vertical direction along the upper surface of the clamping groove 4, in addition, the connecting part between the hinge plate 5 and the base 4 is provided with a coil spring, and the coil spring has a tendency to deflect away from the center of the base 4 when the hinge plate 5 is vertical, so that the base 4 moves upward and pushes the upper cover 6 to move upward, and when the base 4 moves upward by a certain distance, the hinge plate 5 drives the upper cover 6 to deflect away from the base 4, so that the upper position of the base 4 is exposed, to facilitate the staff to put the catheter into the base 4, ensure the clamping effect of the catheter, simplify the operation procedure, improve the use effect of the device, and further, the upper surface of the base 4 is provided with an arc-shaped groove, and the lower side of the upper cover 6 is provided with an arc-shaped groove matched with the arc-shaped groove on the base 4, specifically, the two groups of arc-shaped grooves on the upper cover 6 are combined into a complete circular hole matched with the arc-shaped groove on the base 4, to adapt to the erection and installation of the catheter.

[0031] In the embodiment of the present application, the elastic band 26 and the elastic ring 27 are made of elastic cloth, so that the elastic ring 27 can better adapt to patients with different arm thicknesses. In addition, the elastic ring 27 is provided in two groups, and the two groups of elastic rings 27 are arranged at the two ends of the elastic band 26, so that the position of the positioning arc plate 28 can be controlled and adjusted by adjusting the position of the elastic ring 27, thereby facilitating the adjustment of the needle position during dialysis treatment of the patient. Further, the positioning arc plate 28 is arranged in an arc shape, thereby better adapting to the shape of the patient's arm. In addition, the number of the adhesive buckle 29 is provided in two groups, and the two groups of adhesive buckles 29 are mirror image arranged on the front and rear sides of the positioning arc plate 28. One end of the adhesive buckle 29 is fixedly connected with the positioning arc plate 28, and the other end of the adhesive buckle 29 is provided with a connecting piece which can be connected with the adhesive piece 30. Specifically, the adhesive buckle 29 and the adhesive piece 30 are arranged as a magic tape, thereby facilitating the operation of medical staff and ensuring the safety of the dialysis pipeline.

[0032] In the embodiment of the present application, the accommodating groove 7 is arranged on the inner surface of the arc-shaped groove of the base 4, and the accommodating groove 7 is arranged vertically with the arc-shaped groove. In addition, the number of the accommodating groove 7 is provided in multiple groups, and the multiple groups of accommodating grooves 7 are evenly distributed in a linear array on the inner wall of the arc-shaped groove. In addition, the hinge seat 8 is arranged on the left and right inner walls of the accommodating groove 7, respectively. The connecting column 9 is a rod made of metal, and the tail end of the connecting column 9 is provided with a rotating piece to be connected with the silica gel rod 10, so that the silica gel rod 10 can rotate relative to the connecting column 9. In addition, the silica gel rod 10 is hollow inside, and a memory metal rod is filled in the inner cavity of the silica gel rod 10, so that the silica gel rod 10 can keep resetting when being pressed, thereby making the silica gel rod 10 tightly fit on the arc-shaped outer wall of the catheter when the catheter is pressed into the arc-shaped groove of the base 4. Further, the number of the suction cups 11 is provided in three groups, and the three groups of suction cups 11 are evenly distributed in a circumferential array on the arc-shaped outer wall of the silica gel rod 10, so that the suction cups 11 can always grasp the arc-shaped outer wall of the catheter when the silica gel rod 10 rotates.

[0033] In addition, in order to facilitate the grasping and taking out of the catheter, the inside of the clamping seat 3 is provided with an ejection assembly. The ejection assembly comprises a telescopic rod 12, the end of the telescopic rod 12 is fixedly connected with the inner wall of the clamping seat 3, the other end of the telescopic rod 12 is fixedly connected with the end of an operating rod 13, the end of a reset spring 14 is fixedly connected with the inner wall of the clamping seat 3, the other end of the reset spring 14 is fixedly connected with the end of the operating rod 13, the end of a pull rod 15 is hingedly connected with the inner wall of the operating rod 13, and the other end of the pull rod 15 is hingedly connected with the inner wall of the bottom of the base 4.

[0034] In the embodiment of the present application, the reset spring 14 is sleeved on the outer side of the telescopic rod 12, so that the telescopic rod 12 can guide and limit the deformation direction of the reset spring 14. Specifically, the reset spring 14 can only deform in the horizontal direction when being pressed or stretched, and cannot be deflected in the vertical direction due to its own gravity or being pressed. Therefore, the reset spring 14 can always provide stable transmission effect for the operating rod 13. In addition, the operating rod 13 is in sliding connection with the inner wall of the clamping seat 3. Specifically, a rectangular groove with a size suitable for the cross section of the operating rod 13 is formed in the right outer wall of the clamping seat 3, and the operating rod 13 penetrates through the rectangular groove and is in sliding connection with the clamping seat 3. Therefore, the operating rod 13 can slide left and right on the inner wall of the clamping seat 3. In addition, a rectangular slot with a width suitable for the width of the pull rod 15 is formed in the bottom inner wall of the clamping groove, and the pull rod 15 is arranged in an inclined manner in the clamping seat 3. Therefore, when the operating rod 13 is pushed to the left by an external force, the pull rod 15 is deflected around the hinge point between the pull rod 15 and the operating rod 13, and the pull rod 15 moves towards its vertical state. Therefore, the base 4 is pushed upwards along the inner wall of the clamping groove, so that the base 4 drives the upper cover 6 to move upwards and then deflects away from the center of the base 4. Specifically, the top outer walls on the left and right sides of the clamping groove are arranged in an arc shape, so as to facilitate the deflection of the upper cover 6 and the clamping of the catheter on the base 4.

[0035] In addition, in order to avoid the catheter from being excessively dragged during use and causing harm to the patient's body, a drag prevention assembly is arranged on the side wall of the clamping seat 3. The drag prevention assembly comprises a fixing seat 17, the fixing seat 17 is fixedly installed on the side wall of the clamping seat 3, a transmission rod 18 is fixedly connected to the inner surface of the fixing seat 17, a connecting seat 19 penetrates through the transmission rod 18 and is in rotary connection with the transmission rod 18, one end of a volute spring I 20 is fixedly connected to the side wall of the connecting seat 19, the other end of the volute spring I 20 is fixedly connected to the arc outer wall of the transmission rod 18, one end of a contact rod 21 is fixedly connected to the end of the connecting seat 19, the other end of the contact rod 21 is fixedly connected to a plug rod 22, a limiting seat 23 is fixedly installed on the side wall of the clamping seat 3, a plug disc 24 is in rotary connection with the inner wall of the limiting seat 23, one end of a volute spring II 25 is fixedly connected to the inner wall of the limiting seat 23, and the other end of the volute spring II 25 is fixedly connected to the side wall of the plug disc 24.

[0036] In the embodiment of the present application, the number of anti-dragging assemblies is provided with multiple groups, and the multiple groups of anti-dragging assemblies are correspondingly arranged with the clamping grooves, so that each group of anti-dragging assemblies can independently protect the catheter positioned in the clamping assembly in the single clamping groove from being dragged, further, a rectangular groove with a width suitable for the connecting seat 19 is formed on the inner wall of the fixing seat 17, so that the connecting seat 19 can rotate around the transmission rod 18 as the rotating shaft, at the same time, an inner recess groove for installing the volute spring I 20 is formed on the side wall of the connecting seat 19, so as to ensure that the volute spring I 20 can stably drive the transmission rod 18 and the connecting seat 19, in addition, a layer of rubber pad is arranged on the arc-shaped outer wall of the contact rod 21, so as to increase the contact friction between the contact rod 21 and the catheter, and at the same time, better positioning and anti-dragging effect can be obtained when the catheter is pulled, further, a rectangular insertion slot with a width suitable for the insertion rod 22 is formed on the side wall of the insertion disc 24, and a strip-shaped limiting strip is arranged on the arc-shaped outer wall of the insertion disc 24, at the same time, a circular rotating groove with an outer shape suitable for the insertion disc 24 is formed on the inner wall of the limiting seat 23, and a limiting sliding groove suitable for the strip-shaped limiting strip is formed on the inner surface of the circular rotating groove, so that the insertion disc 24 can only rotate in the interior of the limiting seat 23, and will not be separated from the interior of the limiting seat 23, in addition, the volute spring II 25 is arranged, so that the rectangular insertion slot of the insertion disc 24 is arranged upward in the initial state, and after the catheter is pulled and the contact rod 21 rotates, the volute spring II 25 drives the insertion disc 24 to keep the reverse rotating tendency of resetting, so that the catheter will rotate in the reverse direction after being pulled, thereby realizing the protection effect of the catheter.

[0037] In the present application, when in use, the contact rod 21 is rotated with the transmission rod 18 as the rotation center, and the insertion rod 22 is exposed. At this time, the pipe wound several turns is arranged on the arc-shaped outer wall of the contact rod 21 to facilitate the installation of the pipe on the contact rod 21. Then, under the limitation of the volute spring 20, the connecting seat 19 drives the contact rod 21 to move downward until the insertion rod 22 enters the insertion disc 24. Then, the operating rod 13 is pushed to the clamping seat 3 side, and the pull rod 15 is matched to push the base 4 upward to the upper cover 6 until the upper cover 6 is moved to the top of the clamping groove and is opened to both sides. At this time, the pipe is pressed into the arc-shaped groove on the base 4, and the operating rod 13 is released. Under the action of the return spring 14, the operating rod 13 is reset to drive the pull rod 15 and the base 4 to reset, so that the base 4 moves to the bottom of the clamping groove. Further, the pipe is in contact with the arc-shaped outer wall of the silica gel rod 10, so that the suction disc 11 is adsorbed on the outer wall of the pipe to make the pipe in an open state. When the pipe is accidentally pulled, the inside of the pipe is always in an open state, thereby improving the passability of the pipe and avoiding the occlusion of the pipe after being pulled, which affects the normal development of dialysis treatment. At the same time, a section of the pipe wound on the contact rod 21 is arranged on the side wall of the clamping seat 3. When the patient's arm is moved or displaced due to the connection of the needle, the pipe is pulled. The contact rod 21 is matched to rotate to release the wound pipe to replace the straightened or even tightened pipe pulled by the pipe, so that the patient's arm is not subjected to excessive tension, that is, the puncture needle inserted into the patient's arm is not subjected to excessive pulling force, which causes the puncture needle on the patient's arm to fall off, thereby ensuring the safety of the patient during hemodialysis treatment.

[0038] The above is a detailed description of the present application in general, but some modifications or improvements can be made on the basis of the present application, which is obvious to those skilled in the art. Therefore, the modifications or improvements without departing from the spirit of the present application are within the scope of the present application.

Claims

1. A hemodialysis nursing catheter fixing device, comprising a column (1) and a connecting elastic band (26), wherein a base plate (2) is fixedly installed at the bottom of the column (1), and a clamping seat (3) passes through the column (1), and the clamping seat (3) is fixedly connected to the column (1), characterized in that: The upper surface of the clamping base (3) is provided with a clamping groove, and a base (4) is slidably installed on the inner surface of the clamping groove. A hinge plate (5) is hinged to the upper surface of the base (4), and a top cover (6) is fixedly connected to the top of the hinge plate (5). An anti-drag component is provided on the side wall of the clamping base (3), and the anti-drag component includes: Fixed seat (17), fixed seat (17) is fixedly installed on the side wall of clamping seat (3), transmission rod (18) is fixedly connected to the inner surface of fixed seat (17), transmission rod (18) passes through connecting seat (19), and connecting seat (19) is rotatably connected to transmission rod (18), the end of spiral spring (20) is fixedly connected to the side wall of connecting seat (19), and the other end of spiral spring (20) is fixedly connected to the arc-shaped outer wall of transmission rod (18); The end of the contact rod (21) is fixedly connected to the end of the connecting seat (19), and the other end of the contact rod (21) is fixedly connected to the insert rod (22). A limiting seat (23) is fixedly installed on the side wall of the clamping seat (3). The inner wall of the limiting seat (23) is rotatably connected to the insert plate (24). The inner wall of the limiting seat (23) is fixedly connected to the end of the spiral spring (25), and the other end of the spiral spring (25) is fixedly connected to the side wall of the insert plate (24). The base (4) is provided with an anti-detachment component inside. The anti-detachment component includes a receiving groove (7). The receiving groove (7) is opened on the upper surface of the base (4). A hinge seat (8) is fixedly installed on the inner surface of the receiving groove (7). The end of a connecting column (9) is hinged to the side wall of the hinge seat (8). A silicone rod (10) is rotatably connected to the other end of the connecting column (9). A suction cup (11) is fixedly installed on the arc-shaped outer wall of the silicone rod (10).

2. The hemodialysis nursing catheter fixation device according to claim 1, characterized in that: The outer arc-shaped wall of the insert plate (24) is provided with a strip-shaped limiting strip, and the inner wall of the limiting seat (23) is provided with a circular rotating groove that matches the shape of the insert plate (24), and the inner surface of the circular rotating groove is provided with a limiting slide groove that matches the strip-shaped limiting strip.

3. The hemodialysis nursing catheter fixation device according to claim 1, characterized in that: The number of clamping slots is set in multiple sets, and the multiple clamping slots are evenly distributed in a linear array on the upper surface of the clamping base (3), and the base (4) is set in correspondence with the clamping slots.

4. The hemodialysis nursing catheter fixation device according to claim 1, characterized in that: The upper surface of the base (4) is provided with an arc-shaped groove, and the lower side of the upper cover (6) is provided with an arc-shaped groove that matches the arc-shaped groove on the base (4).

5. The hemodialysis nursing catheter fixation device according to claim 1, characterized in that: The receiving groove (7) is formed on the inner surface of the arc-shaped groove of the base (4), and the receiving groove (7) is set perpendicular to the arc-shaped groove.

6. The hemodialysis nursing catheter fixation device according to claim 1, characterized in that: The silicone rod (10) is hollow inside, and the cavity inside the silicone rod (10) is filled with a shape memory metal rod.

7. A hemodialysis nursing catheter fixation device according to claim 1, characterized in that: The clamping base (3) is provided with an ejection assembly, which includes a telescopic rod (12). The end of the telescopic rod (12) is fixedly connected to the inner wall of the clamping base (3). The other end of the telescopic rod (12) is fixedly connected to the end of the operating rod (13). The end of the return spring (14) is fixedly connected to the inner wall of the clamping base (3). The other end of the return spring (14) is fixedly connected to the end of the operating rod (13). The end of the pull rod (15) is hinged to the inner wall of the operating rod (13). The other end of the pull rod (15) is hinged to the bottom inner wall of the base (4).

8. A hemodialysis nursing catheter fixation device according to claim 7, characterized in that: The bottom inner wall of the clamping groove is provided with a rectangular groove whose width is adapted to the width of the pull rod (15), and the pull rod (15) is arranged in an inclined manner inside the clamping seat (3).

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