Catheter fixing device

Abstract

The invention belongs to the technical field of medical catheters, and particularly relates to a catheter fixing device which comprises an arm sleeve, an air bag is fixedly connected to the inner ring of the arm sleeve, and a catheter positioning assembly is arranged on the arm sleeve; the guide pipe positioning assembly comprises a groove plate fixedly connected to one side of the outer ring of the arm sleeve, and clamping blocks are slidably connected to the two sides of a sliding groove of the groove plate. A sweat absorbing assembly is further arranged on the arm sleeve; the sweat absorbing assembly comprises a rotating ring rotationally arranged in an inner cavity of the arm sleeve, and one side of the rotating ring is fixedly connected with a supporting block. By means of the sweat absorption assembly, when excessive sweat is secreted on the skin at the joint of the patient and the air bag, the sweat of the patient can be absorbed by driving the moisture absorption roller to be attached to the skin of the patient, and the problems of skin redness, pruritus and eczema caused by excessive sweat secretion of the skin due to the fact that the air bag is pressed outside the arm of the patient are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical catheters, in particular to a catheter fixing device. Background Art

[0002] A catheter is a hollow, tubular medical device used to establish a pathway between the human body and external devices or different internal body parts, enabling the delivery, drainage, or monitoring of fluids, gases, or medications. Because catheters must remain stable during medical procedures to prevent displacement, dislodgement, or damage, they must be secured during use.

[0003] Patent publication number CN118767247B discloses a catheter care and fixation device for intravenous therapy, comprising an arm sleeve, a catheter guide clamping mechanism fixedly mounted on the upper end of the arm sleeve, a pressurizing and fixing mechanism fixedly mounted on the arm sleeve, and a pressurizing and positioning confirmation mechanism fixedly mounted on the outer wall of the arm sleeve, which is connected to the pressurizing and fixing mechanism. This patent prevents the catheter from being pulled, causing it to move and thus significantly impact the patient. It also provides ventilation and dehumidification at intervals between the arm sleeve and the patient's arm, preventing the arm sleeve from pressing against the outside of the patient's arm, which could cause excessive sweat secretion on the skin and lead to skin redness, itching, and eczema. It also automatically adjusts the ventilation and dehumidification interval based on the thickness of the patient's arm, allowing patients with thicker arms to use more frequent ventilation and dehumidification.

[0004] However, the above technical solution still has the following deficiencies in practical application:

[0005] By inflating the airbag, the arm sleeve is securely connected to the patient's arm. A ventilation and dehumidification mechanism is also provided to prevent excessive sweating caused by the airbag pressing against the patient's arm, which can lead to redness, itching, and eczema. However, in some cases, patients sweat a lot, and the airbag's constant, close contact with the patient's arm prevents even ventilation across the contact area, which can prolong dehumidification and affect patient comfort. Summary of the Invention

[0006] In order to remedy the deficiencies of the prior art and solve at least one technical problem raised in the background art, the present invention provides a catheter fixing device.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a catheter fixing device, comprising an arm sleeve, an inner ring of the arm sleeve is fixedly connected to an air bag, and a catheter positioning component is provided on the arm sleeve;

[0008] The catheter positioning assembly includes a slot plate fixedly connected to one side of the outer ring of the arm sleeve, and clamping blocks are slidably connected to both sides of the slot of the slot plate;

[0009] The arm sleeve is also provided with a sweat absorbing component;

[0010] The sweat-absorbing component includes a rotating ring rotatably arranged in the inner cavity of the arm sleeve, one side of the rotating ring is fixedly connected to a support block, one side of the support block is slidably connected to a sliding rod, the sliding rod penetrates the groove on one side of the arm sleeve and can move in the groove, the end of the sliding rod is fixedly connected to the groove block, the groove of the groove block is slidably connected to a slider, both sides of the slider are slidably connected to sliding rods, one end of the sliding rod is fixedly connected to the connecting block, and a rotating rod is rotatably set on one end of the connecting block, and a moisture-absorbing roller is sleeved on the rotating rod.

[0011] Preferably, an air pump is fixedly connected to one side of the outer wall of the arm sleeve, an air outlet end of the air pump is connected to an air outlet pipe, and one end of the air outlet pipe is connected to one side of the airbag.

[0012] Preferably, two-way threaded rods are rotatably provided at both ends of the trough plate sliding groove, and both sides of the two-way threaded rods are threadedly connected to the clamping block.

[0013] Preferably, a gear 2 is rotatably provided on one side of the inner cavity of the arm sleeve, a plurality of tooth blocks are evenly provided on the outer ring of the rotating ring, the gear 2 and the tooth blocks of the outer ring of the rotating ring are engaged with each other, a motor 5 is fixedly connected to one side of the inner cavity of the arm sleeve, and the output end of the motor 5 is fixedly connected to the gear 2.

[0014] Preferably, a rack is provided on one side of the sliding rod, a gear one is rotatably provided on one end of the support block, the gear one is engaged with the gear block on the rack, a motor four is fixedly connected to one side of the support block, and the output end of the motor four is fixedly connected to the gear one.

[0015] Preferably, one side of the slider is threadedly connected to a threaded rod, one end of the threaded rod is rotatably set on the slot block, one end of the slot block is fixedly connected to motor 2, and the output end of motor 2 is fixedly connected to one end of the threaded rod.

[0016] Preferably, a spring is sleeved on one side of the slide rod, one end of the spring is fixedly connected to the connecting block, and the other end is fixedly connected to one side of the slide block.

[0017] Preferably, one side of the connecting block is fixedly connected to a motor three, and an output end of the motor three is fixedly connected to one end of the rotating rod.

[0018] Preferably, the arm sleeve is further provided with an auxiliary lifting component;

[0019] The auxiliary lifting component includes two connecting rods rotatably arranged on one side of the outer wall of the arm sleeve, one end of the connecting rod is rotatably arranged with a connecting rod 2, one end of the connecting rod 2 is rotatably arranged with a connecting rod 1, and one end of the connecting rod 1 is rotatably arranged with an adjusting block, one side of the adjusting block is fixedly connected to a stretching rod, and the stretching rod passes through and is fixedly connected to one side of the airbag.

[0020] Preferably, a motor 1 is fixedly connected to one side of the inner cavity of the arm sleeve, and an output end of the motor 1 is fixedly connected to one end of the connecting rod 1.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The catheter securing device described herein involves placing an arm sleeve over the patient's arm. The air pump is activated, inflating the airbag through an outlet tube, gradually inflating the airbag and applying external force to the patient's arm, securely connecting the arm sleeve to the patient's arm. A medical catheter is then passed between two clamping blocks. A bidirectional threaded rod is rotated to bring the two clamping blocks closer together, clamping the catheter. This secures the catheter and prevents it from becoming loose due to external forces. Furthermore, the inflation volume can be adjusted based on the thickness of the patient's arm, extending its applicability.

[0023] 2. The catheter fixing device described in the present invention utilizes a sweat-absorbing component. When the patient's skin at the contact point with the airbag secretes too much sweat, the moisture-absorbing roller can be driven to contact the patient's skin to absorb the patient's sweat, thereby avoiding the problem of excessive sweat secretion on the skin caused by the airbag pressing on the outside of the patient's arm, which in turn causes skin redness, itching and eczema. In addition, compared with the ventilation and dehumidification method, this method can drive the moisture-absorbing roller to directly contact the patient's skin when the patient sweats a lot, and quickly absorb the sweat, thereby avoiding the situation where the airbag is in continuous and close contact with the patient's arm, the contact area is difficult to be evenly exposed to wind, resulting in prolonged dehumidification time and affecting the patient's comfort.

[0024] 3. The catheter fixing device described herein utilizes an auxiliary lifting assembly. When the moisture-absorbing roller needs to be inserted into the gap between the airbag and the patient's skin, a stretching rod drives one side of the airbag to move away from the patient's skin, thereby creating a gap between the airbag and the patient's skin for the moisture-absorbing roller to pass through. The moisture-absorbing roller is then moved to the gap, allowing the moisture-absorbing roller to continue its subsequent operation normally. This avoids the situation in which the moisture-absorbing roller's end contacts the airbag when the airbag is tightly attached to the patient's skin, making it difficult to insert the moisture-absorbing roller into the gap. This ensures the moisture-absorbing roller's subsequent normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 1. It is a schematic diagram of the three-dimensional structure at the sliding rod;

[0028] Figure 3 yes Figure 2 A partial enlarged view of the middle part;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the rotating ring;

[0030] Figure 5 yes Figure 4 A partial enlarged view of point B in the middle;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of the present invention from another perspective;

[0032] Figure 7 yes Figure 6 A partial enlarged view of point C in the middle;

[0033] Figure 8 It is a schematic diagram of the three-dimensional structure at the groove plate.

[0034] In the figure: 1. Arm sleeve; 2. Clamping block; 3. Slot plate; 4. Air bag; 5. Sliding rod; 6. Desiccant roller; 7. Motor 1; 8. Connecting rod 1; 9. Stretch rod; 10. Rack; 11. Rotating rod; 12. Motor 2; 13. Exhaust pipe; 14. Motor 3; 15. Connecting block; 16. Slot block; 17. Sliding block; 18. Threaded rod; 19. Sliding rod; 20. Spring; 21. Connecting rod 2; 22. Adjusting block; 23. Rotating ring; 24. Gear 1; 25. Motor 4; 26. Support block; 27. Gear 2; 28. Motor 5; 29. Bidirectional threaded rod; 30. Air pump. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Please refer to Figures 1-8 , the present invention provides a technical solution: a catheter fixing device, comprising an arm sleeve 1, an inner ring of the arm sleeve 1 is fixedly connected to an air bag 4, and a catheter positioning component is provided on the arm sleeve 1;

[0037] The catheter positioning assembly includes a groove plate 3 fixedly connected to one side of the outer ring of the arm sleeve 1, and clamping blocks 2 are slidably connected to both sides of the sliding groove of the groove plate 3;

[0038] The arm sleeve 1 is also provided with a sweat absorbing component;

[0039] The sweat-absorbing component includes a rotating ring 23 rotatably arranged in the inner cavity of the arm sleeve 1, and a support block 26 is fixedly connected to one side of the rotating ring 23, and a sliding rod 5 is slidably connected to one side of the support block 26. The sliding rod 5 penetrates the groove on one side of the arm sleeve 1 and can move in the groove. The end of the sliding rod 5 is fixedly connected to the groove block 16, and the sliding block 17 is slidably connected to the sliding groove of the groove block 16. Both sides of the slider 17 are slidably connected to sliding rods 19, one end of the sliding rod 19 is fixedly connected to the connecting block 15, and a rotating rod 11 is rotatably arranged on one end of the connecting block 15, and a moisture-absorbing roller 6 is sleeved on the rotating rod 11.

[0040] In this embodiment, Figure 6 and Figure 8 As shown, an air pump 30 is fixedly connected to one side of the outer wall of the arm sleeve 1, and the air outlet end of the air pump 30 is connected to the air outlet pipe 13, and one end of the air outlet pipe 13 is connected to one side of the airbag 4.

[0041] Two-way threaded rods 29 are rotatably provided at both ends of the sliding groove of the groove plate 3 , and both sides of the two-way threaded rod 29 are threadedly connected to the clamping block 2 .

[0042] Specifically, the arm sleeve 1 is placed over the patient's arm, and the air pump 30 is activated. The air pump 30 inflates the airbag 4 through the air outlet tube 13, gradually inflating the airbag 4 and applying external force to the patient's arm, firmly connecting the arm sleeve 1 to the patient's arm. A medical catheter is then passed between the two clamping blocks 2, and the bidirectional threaded rod 29 is rotated to bring the two clamping blocks 2 closer together, clamping the medical catheter. This secures the catheter and prevents it from becoming loose due to external forces. Furthermore, the inflation volume can be adjusted based on the thickness of the patient's arm, extending its applicability.

[0043] In this embodiment, Figure 2-Figure 5 As shown, a gear 2 27 is rotatably provided on one side of the inner cavity of the arm sleeve 1, and a plurality of tooth blocks are evenly provided on the outer ring of the rotating ring 23. The gear 2 27 and the tooth blocks on the outer ring of the rotating ring 23 are engaged with each other. A motor 5 28 is fixedly connected to one side of the inner cavity of the arm sleeve 1, and the output end of the motor 5 28 is fixedly connected to the gear 2 27.

[0044] A rack 10 is provided on one side of the sliding rod 5, and a gear 24 is rotatably provided on one end of the support block 26. The gear 24 is engaged with the tooth block on the rack 10. A motor 4 25 is fixedly connected to one side of the support block 26, and the output end of the motor 4 25 is fixedly connected to the gear 24.

[0045] One side of the slider 17 is threadedly connected to a threaded rod 18 , one end of the threaded rod 18 is rotatably set on the slot block 16 , one end of the slot block 16 is fixedly connected to the motor 2 12 , and the output end of the motor 2 12 is fixedly connected to one end of the threaded rod 18 .

[0046] A spring 20 is sleeved on one side of the slide rod 19 . One end of the spring 20 is fixedly connected to the connecting block 15 , and the other end is fixedly connected to one side of the slide block 17 .

[0047] One side of the connecting block 15 is fixedly connected to the motor 3 14 , and the output end of the motor 3 14 is fixedly connected to one end of the rotating rod 11 .

[0048] Specifically, in the prior art, the arm sleeve 1 is securely connected to the patient's arm by inflating the airbag 4, and a ventilation and dehumidification mechanism is provided to prevent excessive sweat secretion on the skin caused by the airbag 4 pressing against the patient's arm, which in turn causes redness, itching, and eczema. However, in some cases, patients secrete a lot of sweat, and because the airbag 4 is in constant close contact with the patient's arm, the contact area is difficult to be evenly exposed to the wind, resulting in a prolonged dehumidification time and affecting the patient's comfort.

[0049] Therefore, in order to solve the above problem, when the present embodiment is in use, when the patient's skin sweat secretion at the contact area between the airbag 4 and the patient is excessive, the motor 2 12 is used to drive the threaded rod 18 to rotate, so that the slider 17 slides inside the groove block 16, so that the moisture-absorbing roller 6 is close to the patient's skin until the moisture-absorbing roller 6 is closely attached to the patient's skin. Then, the motor 4 25 is used to drive the gear 1 24 to rotate, and the gear 1 24 drives the sliding rod 5 to slide on the support block 26 through the rack 10, so that the moisture-absorbing roller 6 extends into the contact area between the airbag 4 and the patient's skin. Then, motor three 14 and motor five 28 are started simultaneously. Motor five 28 drives gear two 27 to rotate, causing rotating ring 23 to rotate, causing moisture absorption roller 6 to move in a circular motion. Simultaneously, motor three 14 drives rotating rod 11 to rotate, causing moisture absorption roller 6 to rotate. Moisture absorption roller 6 moves along the surface of the patient's arm, absorbing the patient's sweat. Furthermore, with the cooperation of slide bar 19 and spring 20, moisture absorption roller 6 can adapt to the fluctuations of the patient's arm, maintaining a close fit with the patient's arm. After the moisture absorption roller 6 moves along the patient's arm for a full circle, the sweat on the skin where the patient's arm contacts the airbag 4 is evenly absorbed. The moisture absorption roller 6 can then be driven away from the patient's skin. This avoids the problem of excessive sweat secretion on the skin caused by the air bag 4 pressing on the outside of the patient's arm, which in turn leads to skin redness, itching and eczema. In addition, compared with the ventilation and dehumidification method, this method can drive the moisture-absorbing roller 6 to directly contact the patient's skin when the patient sweats more, and quickly absorb the sweat, avoiding the situation where the air bag 4 is in continuous close contact with the patient's arm, the contact area is difficult to be evenly exposed to the wind, resulting in prolonged dehumidification time and affecting the patient's comfort.

[0050] In addition, since the moisture absorption roller 6 is sleeved on the rotating rod 11, the moisture absorption roller 6 can be replaced when used by different patients to avoid cross infection.

[0051] In this embodiment, Figure 2 and Figure 7As shown, the arm sleeve 1 is also provided with an auxiliary lifting component;

[0052] The auxiliary lifting assembly includes two connecting rods 8 rotatably arranged on one side of the outer wall of the arm sleeve 1, one end of the connecting rod 8 is rotatably provided with a connecting rod 21, one end of the connecting rod 21 is rotatably provided with a connecting rod 8, and one end of the connecting rod 8 is rotatably provided with an adjusting block 22. One side of the adjusting block 22 is fixedly connected to a stretching rod 9, and the stretching rod 9 passes through and is fixedly connected to one side of the airbag 4.

[0053] One side of the inner cavity of the arm sleeve 1 is fixedly connected to a motor 7, and the output end of the motor 7 is fixedly connected to one end of a connecting rod 8.

[0054] Specifically, in the above embodiment, although the moisture absorption roller 6 can be driven to contact the patient's skin to absorb sweat, since the airbag 4 is in close contact with the patient's skin, when the moisture absorption roller 6 is inserted into the gap between the airbag 4 and the patient's skin, it is easy for the end of the moisture absorption roller 6 to abut against the airbag 4, making it difficult for the moisture absorption roller 6 to be inserted, thereby affecting the subsequent normal operation of the moisture absorption roller 6.

[0055] Therefore, to address the above-mentioned problem, in this embodiment, since the stretch rod 9 extends through and is fixedly connected to the airbag 4 during use, when the moisture-absorbing roller 6 needs to be driven into the gap between the airbag 4 and the patient's skin, the motor 1 7 drives the connecting rod 1 8 to rotate, and the stretch rod 9, in cooperation with the connecting rod 2 21, moves. The stretch rod 9 drives one side of the airbag 4 to move away from the patient's skin, thereby creating a gap between the airbag 4 and the patient's skin for the moisture-absorbing roller 6 to pass through. The moisture-absorbing roller 6 is then driven to the gap, and the moisture-absorbing roller 6 can then continue to operate normally. This avoids the situation where the moisture-absorbing roller 6 is difficult to insert into the gap between the airbag 4 and the patient's skin due to the airbag 4 being tightly attached to the patient's skin, thereby ensuring the normal operation of the moisture-absorbing roller 6.

[0056] Working Principle: Arm sleeve 1 is placed over the patient's arm, and air pump 30 is activated. Air pump 30 inflates airbag 4 through outlet tube 13, gradually inflating airbag 4 and applying external force to the patient's arm, firmly connecting arm sleeve 1 to the patient's arm. A medical catheter is then passed between two clamping blocks 2. The bidirectional threaded rod 29 is rotated to bring the two clamping blocks 2 closer together, clamping the medical catheter. This secures the catheter and prevents it from becoming loose due to external forces. The inflation volume can be adjusted based on the thickness of the patient's arm, extending its applicability. When the patient secretes too much sweat on the skin where the airbag 4 is in contact with the patient, the motor 2 12 is used to drive the threaded rod 18 to rotate, so that the slider 17 slides inside the groove block 16, so that the moisture absorption roller 6 is close to the patient's skin until the moisture absorption roller 6 is in close contact with the patient's skin. Then, the motor 4 25 is used to drive the gear 1 24 to rotate, and the gear 1 24 drives the sliding rod 5 to slide on the supporting block 26 through the rack 10, so that the moisture absorption roller 6 extends into the contact area between the airbag 4 and the patient's skin. Then, the motor 3 14 and the motor 5 28 are started at the same time, and the motor 5 28 drives the gear 2 27 to rotate, so that the rotating ring 23 rotates, and the moisture absorption roller 6 performs a circular motion. At the same time, the motor 3 14 drives the rotating rod 11 to rotate, so that the moisture absorption roller 6 rotates, and the moisture absorption roller 6 moves along the surface of the patient's arm, and the moisture absorption roller 6 absorbs the patient's sweat. In addition, with the cooperation of the sliding rod 19 and the spring 20, the moisture absorption roller 6 can adapt to the ups and downs of the patient's arm, and the moisture absorption roller 6 always keeps in close contact with the patient's arm. After the moisture-absorbing roller 6 has moved along the patient's arm for a full rotation, the sweat from the skin where the patient's arm and the airbag 4 meet is evenly absorbed. The moisture-absorbing roller 6 can then be moved away from the patient's skin. This prevents excessive sweat secretion caused by the airbag 4 pressing against the outside of the patient's arm, which can lead to redness, itching, and eczema. Furthermore, compared to ventilation dehumidification, this method allows the moisture-absorbing roller 6 to directly contact the patient's skin when sweating profusely, quickly absorbing sweat. This avoids the situation where the airbag 4 is constantly in close contact with the patient's arm, making it difficult for the contact area to be evenly exposed to air, resulting in prolonged dehumidification and affecting patient comfort. Furthermore, because the moisture-absorbing roller 6 is mounted on the rotating rod 11, it can be replaced between different patients to prevent cross-infection. Because the stretch rod 9 extends through and is fixedly connected to the airbag 4, when the moisture-absorbing roller 6 needs to be driven into the gap between the airbag 4 and the patient's skin, the motor 1 7 drives the connecting rod 1 8 to rotate, and with the cooperation of the connecting rod 2 21, the stretch rod 9 moves. The stretch rod 9 drives one side of the airbag 4 to move away from the patient's skin, thereby creating a gap between the airbag 4 and the patient's skin for the moisture-absorbing roller 6 to pass through. The moisture-absorbing roller 6 is then driven to move into the gap, and the moisture-absorbing roller 6 can then continue to work normally. This avoids the situation where the moisture-absorbing roller 6 is difficult to insert into the gap between the airbag 4 and the patient's skin due to the airbag 4 being tightly attached to the patient's skin, which may occur due to the end of the moisture-absorbing roller 6 abutting against the airbag 4, thereby ensuring the normal subsequent operation of the moisture-absorbing roller 6.

[0057] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A catheter fixing device, comprising an arm sleeve (1), characterized in that: The inner ring of the arm sleeve (1) is fixedly connected to an air bag (4), and a catheter positioning component is provided on the arm sleeve (1); The catheter positioning assembly comprises a groove plate (3) fixedly connected to one side of the outer ring of the arm sleeve (1), and clamping blocks (2) are slidably connected to both sides of the sliding groove of the groove plate (3); The arm sleeve (1) is also provided with a sweat absorbing component; The sweat absorbing component comprises a rotating ring (23) rotatably arranged in the inner cavity of the arm sleeve (1); one side of the rotating ring (23) is fixedly connected to a support block (26); one side of the support block (26) is slidably connected to a sliding rod (5); the sliding rod (5) penetrates a groove on one side of the arm sleeve (1) and can move in the groove; the end of the sliding rod (5) is fixedly connected to a groove block (16); the groove of the groove block (16) is slidably connected to a slider (17); both sides of the slider (17) are slidably connected to sliding rods (19); one end of the sliding rod (19) is fixedly connected to a connecting block (15); one end of the connecting block (15) is rotatably provided with a rotating rod (11); and a moisture absorbing roller (6) is sleeved on the rotating rod (11).

2. The catheter fixing device according to claim 1, characterized in that: An air pump (30) is fixedly connected to one side of the outer wall of the arm sleeve (1); an air outlet end of the air pump (30) is connected to an air outlet pipe (13); and one end of the air outlet pipe (13) is connected to one side of the air bag (4).

3. The catheter fixing device according to claim 1, characterized in that: Two-way threaded rods (29) are rotatably provided at both ends of the sliding groove of the groove plate (3), and both sides of the two-way threaded rod (29) are threadedly connected to the clamping block (2).

4. The catheter fixing device according to claim 1, characterized in that: A gear 2 (27) is rotatably provided on one side of the inner cavity of the arm sleeve (1), and a plurality of tooth blocks are evenly provided on the outer ring of the rotating ring (23). The gear 2 (27) and the tooth blocks on the outer ring of the rotating ring (23) are meshed with each other. A motor 5 (28) is fixedly connected to one side of the inner cavity of the arm sleeve (1), and the output end of the motor 5 (28) is fixedly connected to the gear 2 (27).

5. The catheter fixing device according to claim 1, characterized in that: A rack (10) is provided on one side of the sliding rod (5), a gear (24) is rotatably provided on one end of the support block (26), the gear (24) and the gear block on the rack (10) are meshed with each other, a motor (25) is fixedly connected to one side of the support block (26), and the output end of the motor (25) is fixedly connected to the gear (24).

6. The catheter fixing device according to claim 1, characterized in that: One side of the slider (17) is threadedly connected to a threaded rod (18), one end of the threaded rod (18) is rotatably arranged on the slot block (16), one end of the slot block (16) is fixedly connected to the second motor (12), and the output end of the second motor (12) is fixedly connected to one end of the threaded rod (18).

7. The catheter fixing device according to claim 1, characterized in that: A spring (20) is sleeved on one side of the slide rod (19), one end of the spring (20) is fixedly connected to the connecting block (15), and the other end is fixedly connected to one side of the slide block (17).

8. The catheter fixing device according to claim 1, characterized in that: One side of the connecting block (15) is fixedly connected to a motor three (14), and the output end of the motor three (14) is fixedly connected to one end of the rotating rod (11).

9. The catheter fixing device according to claim 1, characterized in that: The arm sleeve (1) is also provided with an auxiliary lifting component; The auxiliary lifting assembly includes two connecting rods (8) rotatably arranged on one side of the outer wall of the arm sleeve (1), one end of the connecting rod (8) is rotatably arranged with a connecting rod (21), one end of the connecting rod (21) is rotatably arranged with a connecting rod (8), one end of the connecting rod (8) is rotatably arranged with an adjusting block (22), one side of the adjusting block (22) is fixedly connected with a stretching rod (9), and the stretching rod (9) passes through and is fixedly connected to one side of the airbag (4).

10. The catheter fixing device according to claim 9, characterized in that: One side of the inner cavity of the arm sleeve (1) is fixedly connected to a motor (7), and the output end of the motor (7) is fixedly connected to one end of a connecting rod (8).

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