A catheter care fixing device for intravenous therapy

Abstract

The present invention belongs to the technical field of medical catheters, and in particular, relates to a catheter care and fixing device for intravenous treatment, including an arm sleeve, a catheter guide clamping mechanism is fixedly installed on the upper end of the arm sleeve, a pressurizing fixing mechanism is fixedly installed on the arm sleeve, and a pressurizing confirmation mechanism connected to the pressurizing fixing mechanism is also fixedly installed on the outer wall of the arm sleeve. The present invention can prevent the catheter from being pulled and causing the catheter to move, thereby causing a greater impact on the patient, and can perform ventilation and dehumidification work at intervals between the arm sleeve and the patient's arm to avoid the arm sleeve pressing on the outside of the patient's arm, which will cause excessive sweat secretion on the skin, thereby causing skin redness, itching and eczema. It can automatically adjust the interval time of ventilation and dehumidification based on the thickness of the patient's arm, so as to meet the needs of patients with thicker arms to use higher frequency ventilation and dehumidification work.

Description

Technical Field

[0001] The invention belongs to the technical field of medical catheters, and in particular relates to a catheter care and fixing device for intravenous treatment. Background Art

[0002] The catheter care and fixation device for intravenous therapy is a medical device used to fix intravenous catheters. It can ensure that the position of the catheter is relatively fixed, reduce the risk of catheter displacement and dislocation, and prevent the catheter from being pulled, twisted or damaged due to activities.

[0003] Current intravenous therapy catheters need to be fixed to the patient's arm with a fixation patch during use. However, during long-term use, the catheter may become displaced and loosened due to reduced viscosity of the fixation patch and excessive patient activity. For intravenous treatments in some special cases, such as when using irritating chemotherapy drugs, catheter movement can easily cause drug extravasation, leading to serious tissue damage. For patients with coagulation disorders, since these patients have a higher risk of bleeding, catheter movement can easily cause complications such as bleeding, and random movement of the catheter can aggravate inflammatory reactions or cause the spread of infection. For catheters placed in key locations such as large blood vessels, nerves and other important structures, catheter movement can cause unexpected damage. Based on the above circumstances, the stability of the catheter fixation is very important. Therefore, simply fixing the catheter with a simple fixation patch obviously cannot meet actual usage needs. Summary of the invention

[0004] The purpose of the present invention is to provide a catheter care and fixing device for intravenous treatment in view of the above problems.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a catheter care and fixing device for intravenous treatment, comprising an arm sleeve, a catheter guide clamping mechanism is fixedly installed on the upper end of the arm sleeve, a pressurizing fixing mechanism is fixedly installed on the arm sleeve, a pressurizing in place confirmation mechanism connected to the pressurizing fixing mechanism is also fixedly installed on the outer wall of the arm sleeve, an arm thickness detection feedback mechanism located on one side of the pressurizing fixing mechanism is fixedly installed on the outer wall of the arm sleeve, ventilation and dehumidification mechanisms are installed on the surfaces of both ends of the arm sleeve, an intermittent starting mechanism and an alarm are also fixedly installed on the outer wall of the arm sleeve, the intermittent starting mechanism is used to control the action of the ventilation and dehumidification mechanism, and a PLC controller is also fixedly installed on the outer wall of the arm sleeve, and the PLC controller is electrically connected to the catheter guide clamping mechanism, the pressurizing fixing mechanism, the pressurizing in place confirmation mechanism, the arm thickness detection feedback mechanism, the ventilation and dehumidification mechanism and the intermittent starting mechanism respectively.

[0006] In the above-mentioned catheter care and fixing device for intravenous treatment, the catheter guide clamping mechanism includes a catheter clamping cylinder fixedly connected to the upper end of the arm sleeve, an extension clamping cylinder is provided at the front end of the catheter clamping cylinder, and the upper and lower ends of the extension clamping cylinder are fixedly connected to a movable rod, and the upper and lower ends of the catheter clamping cylinder are fixedly connected to a positioning seat connected to the movable rod sleeve, the rear end of the movable rod is fixedly connected to a pressing plate, and a compensation spring sleeved on the outside of the movable rod is fixedly connected between the pressing plate and the positioning seat, a pressure switch is fixedly connected to the rear side of the positioning seat, and two L-shaped fixing plates are symmetrically fixedly connected to the upper and lower sides of the rear side of the catheter clamping cylinder, a micro electric push rod is fixedly sleeved on the surface of the L-shaped fixing plate, and an extrusion plate is fixedly connected to the output end of the micro electric push rod.

[0007] In the above-mentioned catheter care and fixing device for intravenous treatment, the pressurized fixing mechanism includes an elastic anti-slip air bag fixedly connected to the inner wall of the arm sleeve, and a forward and reverse air pump is fixedly installed on the outer wall of the arm sleeve. The output end of the forward and reverse air pump is fixedly connected to a ventilation tube, and one end of the ventilation tube is fixedly connected to the elastic anti-slip air bag.

[0008] In the above-mentioned catheter care and fixing device for intravenous treatment, the pressurized in place confirmation mechanism includes a confirmation cylinder, the front end of the confirmation cylinder is fixedly connected to the ventilation tube through an air distribution pipe, a piston plate is arranged inside the confirmation cylinder, and two guide slide rods are symmetrically fixedly connected to the front side of the piston plate, and the front end of the guide slide rod passes through the front end of the confirmation cylinder, and the front side of the inner wall of the confirmation cylinder and the side wall of the piston plate are fixedly connected with two return springs respectively mounted outside the two guide slide rods, and a confirmation switch is fixedly installed on the rear side of the inner wall of the confirmation cylinder.

[0009] In the above-mentioned catheter care and fixing device for intravenous treatment, the arm thickness detection feedback mechanism includes a feedback shell, the inner wall of the feedback shell is rotatably connected to a transmission screw, a reduction synchronous motor for driving the transmission screw to rotate is fixedly installed on the front side of the feedback shell, a feedback plate is threadedly sleeved on the rod wall of the transmission screw, a conductive contact is fixedly connected to the lower end of the feedback plate, a resistor rod electrically contacting the conductive contact is fixedly installed on the lower side of the inner wall of the feedback shell, a pressing round head is fixedly connected to the upper end of the feedback plate, and a plurality of power adjustment switches are evenly fixedly installed on the upper side of the inner wall of the feedback shell.

[0010] In the above-mentioned catheter care and fixing device for intravenous treatment, the ventilation and dehumidification mechanism includes a plurality of cover shells uniformly fixedly connected to the outer wall of the arm sleeve, the surface of the arm sleeve is symmetrically and movably sleeved with two push-pull rods located in the cover shell, one end of the two push-pull rods located in the cover shell is fixedly connected to the same push-pull plate, two push-back springs sleeved outside the push-pull rods are fixedly connected between the push-pull plate and the arm sleeve, the side of the push-pull plate away from the arm sleeve is fixedly connected to a thrust permanent magnet plate, the inner wall of the cover shell is fixedly installed with a thrust electromagnetic plate, one end of the two push-pull rods located in the arm sleeve is fixedly connected to the same mounting plate, a fan is embedded on the surface of the mounting plate, and the end of the mounting plate away from the push-pull rod is fixedly connected to an arc-shaped anti-slip plate.

[0011] In the above-mentioned catheter care and fixing device for intravenous treatment, the intermittent starting mechanism includes a starting round shell, a rotating shaft is rotatably connected at the center of the inner wall of the starting round shell, a micro reduction motor for driving the rotating shaft to rotate is fixedly installed on the outer wall of the starting round shell, a connecting rod is fixedly sleeved on the shaft wall of the rotating shaft, one end of the connecting rod is fixedly connected to an arc-shaped pressing block, and a starting switch is fixedly installed on one side of the inner wall of the starting round shell.

[0012] In the above-mentioned catheter care and fixing device for intravenous treatment, the two opposite sides of the feedback plate are fixedly connected with limit sliders, and the rear side of the inner wall of the feedback shell is provided with a limit sliding groove that matches and slides with the limit slider.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The arm sleeve, catheter guide clamping mechanism and alarm device can effectively guide and limit the catheter to prevent it from loosening during use. When the catheter is pulled by external force, it can be detected in time and reinforced in time to prevent the catheter from being pulled and moving, which will cause a greater impact on the patient.

[0015] 2. The pressurized fixing mechanism and the pressurized in-place confirmation mechanism can stably connect the arm sleeve to the patient's arm, thereby further firmly fixing the catheter. The connection strength can be automatically adjusted based on the thickness of the patient's arm, thereby ensuring the stability of the connection between the arm sleeve and the patient's arm, and having a wider range of applications.

[0016] 3. Through the arm thickness detection feedback mechanism, ventilation and dehumidification mechanism, intermittent start mechanism and alarm, ventilation and dehumidification work can be performed at intervals between the arm sleeve and the patient's arm to avoid the arm sleeve being pressed on the outside of the patient's arm, which will cause excessive sweat secretion of the skin, and further cause skin redness, itching and eczema problems, and avoid long-term compression causing poor blood circulation in the patient's arm, and excessive arm restraint and discomfort. The ventilation and dehumidification interval time can be automatically adjusted based on the thickness of the patient's arm to meet the needs of patients with thicker arms to adopt higher frequency ventilation and dehumidification work, and avoid the problem that patients with thicker arms have a larger contact area with the arm sleeve, resulting in more friction and heat accumulation, and thus infrequent ventilation and dehumidification work will still cause damage to the patient's arm skin.

[0017] In summary: the present invention can effectively guide and limit the catheter to prevent the catheter from loosening during use, and when the catheter is pulled by external force, it can be detected in time and reinforced in time to prevent the catheter from being pulled and causing the catheter to move, thereby causing a greater impact on the patient. Ventilation and dehumidification can be performed at intervals between the arm sleeve and the patient's arm to avoid the arm sleeve being pressed on the outside of the patient's arm, which will cause excessive sweat secretion of the skin, thereby causing skin redness, itching and eczema, and avoid long-term compression causing blood circulation in the patient's arm, and the problem of excessive arm restraint and discomfort. The ventilation and dehumidification interval can be automatically adjusted based on the thickness of the patient's arm to meet the needs of patients with thicker arms to use higher frequency ventilation and dehumidification work, and to avoid the problem that patients with thicker arms have a larger contact area with the arm sleeve, resulting in more friction and heat accumulation, and thus infrequent ventilation and dehumidification work will still cause damage to the patient's arm skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a catheter care and fixing device for intravenous treatment provided by the present invention;

[0019] Figure 2 It is a schematic diagram of the top view of the structure of a catheter guide clamping mechanism of a catheter care and fixing device for intravenous therapy provided by the present invention;

[0020] Figure 3 It is a structural schematic diagram of a pressurizing fixing mechanism of a catheter care fixing device for intravenous treatment provided by the present invention;

[0021] Figure 4 It is a cross-sectional structural schematic diagram of a pressurized in-place confirmation mechanism of a catheter care and fixing device for intravenous therapy provided by the present invention;

[0022] Figure 5 It is a side cross-sectional structural schematic diagram of an arm thickness detection feedback mechanism of a catheter care and fixing device for intravenous treatment provided by the present invention;

[0023] Figure 6 It is a cross-sectional structural schematic diagram of a ventilation and moisture removal mechanism of a catheter care and fixing device for intravenous therapy provided by the present invention;

[0024] Figure 7 The present invention is a schematic cross-sectional structural diagram of an intermittent starting mechanism of a catheter care fixing device for intravenous treatment provided by the present invention.

[0025] In the figure: 1 arm sleeve, 2 catheter guide clamping mechanism, 21 catheter clamping tube, 22 extension clamping tube, 23 movable rod, 24 positioning seat, 25 pressing plate, 26 compensation spring, 27 pressure switch, 28 L-shaped fixing plate, 29 micro electric push rod, 210 extrusion plate, 3 pressurized fixing mechanism, 31 elastic anti-skid airbag, 32 positive and negative air pump, 33 ventilation pipe, 4 pressurized in place confirmation mechanism, 41 confirmation tube, 42 air distribution pipe, 43 piston plate, 44 guide slide rod, 45 reset spring, 46 confirmation switch, 5 arm thickness detection feedback mechanism, 51 reverse Feed housing, 52 transmission screw, 53 reduction synchronous motor, 54 feedback plate, 55 conductive contact, 56 resistor rod, 57 pressing round head, 58 power adjustment switch, 6 ventilation and dehumidification mechanism, 61 cover, 62 push-pull rod, 63 push-pull plate, 64 push-back spring, 65 thrust permanent magnet plate, 66 thrust electromagnetic plate, 67 mounting plate, 68 fan, 69 arc-shaped anti-slip plate, 7 intermittent starting mechanism, 71 starting round housing, 72 rotating shaft, 73 micro reduction motor, 74 connecting rod, 75 arc-shaped pressing block, 76 starting switch, 8 alarm, 9 PLC controller. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] like Figure 1-Figure 7As shown, a catheter care and fixing device for intravenous treatment includes an arm sleeve 1, a catheter guide clamping mechanism 2 is fixedly installed on the upper end of the arm sleeve 1, the catheter guide clamping mechanism 2 includes a catheter clamping tube 21 fixedly connected to the upper end of the arm sleeve 1, an extension clamping tube 22 is arranged at the front end of the catheter clamping tube 21, and a movable rod 23 is fixedly connected to the upper and lower ends of the extension clamping tube 22, and the upper and lower ends of the catheter clamping tube 21 are fixedly connected to a positioning seat 24 connected to the movable rod 23 plug-in sleeve, and the rear end of the movable rod 23 is fixedly connected to a pressing plate 25, and a compensation spring 26 sleeved on the outside of the movable rod 23 is fixedly connected between the pressing plate 25 and the positioning seat 24, and a pressure switch 27 is fixedly connected to the rear side of the positioning seat 24, and two L-shaped fixing plates 28 are symmetrically fixedly connected to the rear side of the catheter clamping tube 21, and a micro electric push rod 29 is fixedly sleeved on the surface of the L-shaped fixing plate 28, and an extrusion plate 210 is fixedly connected to the output end of the micro electric push rod 29.

[0028] A pressurized fixing mechanism 3 is fixedly installed on the arm sleeve 1, and the pressurized fixing mechanism 3 includes an elastic anti-skid airbag 31 fixedly connected to the inner wall of the arm sleeve 1. A forward and reverse air pump 32 is fixedly installed on the outer wall of the arm sleeve 1. The output end of the forward and reverse air pump 32 is fixedly connected to a ventilation pipe 33, and one end of the ventilation pipe 33 is fixedly connected to the elastic anti-skid airbag 31.

[0029] The outer wall of the arm sleeve 1 is also fixedly provided with a pressurization in place confirmation mechanism 4 which is connected to the pressurization fixing mechanism 3. The pressurization in place confirmation mechanism 4 includes a confirmation cylinder 41. The front end of the confirmation cylinder 41 is fixedly connected to the ventilation pipe 33 through the air distribution pipe 42. A piston plate 43 is arranged in the confirmation cylinder 41. Two guide slide rods 44 are symmetrically fixedly connected to the front side of the piston plate 43. The front end of the guide slide rod 44 passes through the front end of the confirmation cylinder 41. Two return springs 45 which are respectively mounted on the outside of the two guide slide rods 44 are fixedly connected to the front side of the inner wall of the confirmation cylinder 41 and the side wall of the piston plate 43. A confirmation switch 46 is fixedly provided on the rear side of the inner wall of the confirmation cylinder 41.

[0030] The outer wall of the arm sleeve 1 is fixedly provided with an arm thickness detection feedback mechanism 5 located on one side of the pressurizing and fixing mechanism 3, and the arm thickness detection feedback mechanism 5 includes a feedback shell 51, and the inner wall of the feedback shell 51 is rotatably connected to a transmission screw 52, ​​and the front side of the feedback shell 51 is fixedly provided with a reduction synchronous motor 53 for driving the transmission screw 52 to rotate, and the rod wall of the transmission screw 52 is threadedly sleeved with a feedback plate 54, and the opposite sides of the feedback plate 54 are fixedly connected with a limit slider, and the rear side of the inner wall of the feedback shell 51 is provided with a limit slide groove that matches the limit slider and slides in contact, the lower end of the feedback plate 54 is fixedly connected with a conductive contact 55, and the lower side of the inner wall of the feedback shell 51 is fixedly provided with a resistor rod 56 that is in electrical contact with the conductive contact 55, and the upper end of the feedback plate 54 is fixedly connected with a pressing round head 57, and a plurality of power adjustment switches 58 are evenly fixedly provided on the upper side of the inner wall of the feedback shell 51.

[0031] A ventilation and dehumidification mechanism 6 is installed on the surfaces of both ends of the arm sleeve 1. The ventilation and dehumidification mechanism 6 includes a plurality of cover shells 61 uniformly fixedly connected to the outer wall of the arm sleeve 1. The surface of the arm sleeve 1 is symmetrically and movably sleeved with two push-pull rods 62 located in the cover shell 61. One end of the two push-pull rods 62 located in the cover shell 61 is fixedly connected to the same push-pull plate 63. Two push-back springs 64 arranged outside the push-pull rods 62 are fixedly connected between the push-pull plate 63 and the arm sleeve 1. A thrust permanent magnet plate 65 is fixedly connected to the side of the push-pull plate 63 away from the arm sleeve 1. A thrust electromagnetic plate 66 is fixedly installed on the inner wall of the cover shell 61. One end of the two push-pull rods 62 located in the arm sleeve 1 is fixedly connected to the same mounting plate 67. A fan 68 is embedded on the surface of the mounting plate 67. An arc-shaped anti-slip plate 69 is fixedly connected to the end of the mounting plate 67 away from the push-pull rod 62.

[0032] The outer wall of the arm sleeve 1 is also fixedly provided with an intermittent starting mechanism 7 and an alarm 8. The intermittent starting mechanism 7 is used to control the action of the ventilation and dehumidification mechanism 6. The intermittent starting mechanism 7 includes a starting round shell 71. A rotating shaft 72 is rotatably connected at the center of the inner wall of the starting round shell 71. A micro reduction motor 73 for driving the rotating shaft 72 to rotate is fixedly provided on the outer wall of the starting round shell 71. A connecting rod 74 is fixedly sleeved on the shaft wall of the rotating shaft 72. An arc-shaped pressing block 75 is fixedly connected to one end of the connecting rod 74. A starting switch 76 is fixedly provided on one side of the inner wall of the starting round shell 71.

[0033] A PLC controller 9 is also fixedly mounted on the outer wall of the arm sleeve 1, and the PLC controller 9 is electrically connected to the catheter guide clamping mechanism 2, the pressurizing fixing mechanism 3, the pressurizing in place confirmation mechanism 4, the arm thickness detection feedback mechanism 5, the ventilation and dehumidification mechanism 6 and the intermittent starting mechanism 7 respectively.

[0034] The operating principle of the present invention is described as follows: the arm sleeve 1 is sleeved on the outside of the patient's arm, and the PLC controller 9 controls the forward and reverse air pumps 32 to drive forward. The forward and reverse air pumps 32 inflate the elastic anti-skid airbag 31 through the ventilation tube 33, so that the elastic anti-skid airbag 31 gradually swells, and then exerts pressure on the outside of the patient's arm, so that the arm sleeve 1 and the patient's arm are stably contacted and connected together. When the contact pressure between the elastic anti-skid airbag 31 and the patient's arm increases to a pressure threshold, because the pressure in the elastic anti-skid airbag 31 is too high, the air transported by the ventilation tube 33 to the elastic anti-skid airbag 31 is transported to the confirmation tube 41 through the air distribution tube 42, thereby increasing the air pressure in the confirmation tube 41, and then causing the piston plate 43 to be equipped with a piston plate 43. The guide slide rod 44 overcomes the elastic force of the return spring 45 and moves in the confirmation cylinder 41 until the piston plate 43 acts on the confirmation switch 46, indicating that the air pressure in the elastic anti-skid airbag 31 is large enough to be in a state of stable contact with the patient's arm. At this time, the PLC controller 9 controls the forward and reverse air pumps 32 to stop working. The forward and reverse air pumps 32 here have a self-locking mechanism, and there will be no problem of air leakage. The pump machine has a self-locking mechanism, which is a prior art and will not be described in detail here. It can make the arm sleeve 1 stably connected to the patient's arm, thereby achieving further stable fixation of the catheter, and can automatically adjust the connection strength based on the thickness of the patient's arm, to ensure the stability of the connection between the arm sleeve 1 and the patient's arm, and has a wider range of applications.

[0035] The medical catheter for intravenous treatment is placed in the catheter clamping cylinder 21 and the extension clamping cylinder 22. Both the catheter clamping cylinder 21 and the extension clamping cylinder 22 are structures with two semicircular plates locked with bolts, so the medical catheter can be quickly and conveniently installed and fixed. When the rear end of the medical catheter is subjected to pulling force due to the patient's inadvertent activities, the medical catheter first drives the extension clamping cylinder 22 to move backward, and the extension clamping cylinder 22 slides on the positioning seat 24 through the movable rod 23, so that the pressing plate 25 overcomes the elastic force of the compensation spring 26 and moves toward the positioning seat 24 until the pressing plate 25 acts on the pressure switch 27, thereby The medical catheter is fed back with the pulling force. At this time, the PLC controller 9 controls the micro electric push rod 29 to push the extrusion plate 210 toward the medical catheter, thereby further clamping and fixing the medical catheter, so that the clamping and stabilizing force of the medical catheter is instantly improved, avoiding the problem that the external pulling force is too large and the medical catheter is loose, and the catheter can be effectively guided and limited to prevent the catheter from being loose during use. When the catheter is pulled by external force, it can be detected in time and reinforced in time to prevent the catheter from being pulled by the pulling force and causing the catheter to move and cause a greater impact on the patient;

[0036] When the confirmation switch 46 is pressed, it indicates that the medical catheter is in place, and the PLC controller 9 synchronously controls the micro reduction motor 73 to move. The micro reduction motor 73 drives the arc pressing block 75 to slowly move in the starting round shell 71 through the rotating shaft 72 and the connecting rod 74 until the arc pressing block 75 acts on the starting switch 76. After the starting switch 76 is triggered, the PLC controller 9 first controls the power supply equipment to supply power to the thrust electromagnetic plate 66. The thrust electromagnetic plate 66 is energized to generate magnetism to cooperate with the thrust permanent magnet plate 65 to drive the push-pull plate 63 and the push-pull rod 62 to make the installation plate 67 and the arc anti-slip plate 69 move toward the patient's arm, thereby making the arc anti-slip plate 69 firmly contact the outside of the patient's arm, and further firmly limit the arm sleeve 1. The PLC controller 9 then controls the forward and reverse air pumps 32 to reverse The arm sleeve 1 moves to discharge the air filled in the elastic anti-skid airbag 31, and the elastic anti-skid airbag 31 retracts. At this time, the fan 68 of the side plate of the mounting plate 67 moves to form a ventilation airflow between the arm sleeve 1 and the patient's arm, and the connection between the patient's arm and the arm sleeve 1 is quickly ventilated and dehumidified. At this time, the PLC controller 9 controls the alarm 8 to sound, reminding the patient to pay attention to the movement at this time to avoid excessive activity causing the arm sleeve 1 to drive the medical catheter to shift. Ventilation and dehumidification can be performed at intervals between the arm sleeve 1 and the patient's arm to avoid the arm sleeve 1 pressing on the outside of the patient's arm, which will cause excessive sweat secretion on the skin, and then cause skin redness, itching and eczema. It also avoids the problem of poor blood circulation in the patient's arm due to long-term compression and the discomfort of excessive arm restraint.

[0037] And at the beginning, when the forward and reverse air pumps 32 inflate the elastic anti-skid airbag 31, the PLC controller 9 controls the reduction synchronous motor 53 to act at the same time, and the reduction synchronous motor 53 drives the transmission screw 52 to rotate, and the threaded sleeve effect of the transmission screw 52 and the feedback plate 54 makes the feedback plate 54 move in the feedback shell 51, thereby driving the conductive contact 55 to slide on the resistor rod 56 until the confirmation switch 46 is pressed and triggered. At this time, the reduction synchronous motor 53 also stops working. When the patient's arm is thinner, the inflation time of the forward and reverse air pumps 32 is longer, and the sliding distance of the conductive contact 55 on the resistor rod 56 is greater, so that the access resistance of the resistor rod 56 is greater, and the conductive contact 55 and the resistor rod 56 are connected in series to the power supply circuit of the micro reduction motor 73. The micro reduction motor 73 is a DC motor. The greater the access resistance of the resistor rod 56, the smaller the power supply current of the micro reduction motor 73, so that the speed of the micro reduction motor 73 is slower, thereby making The longer the interval time when the start switch 76 is triggered, the longer the interval time when the ventilation and dehumidification mechanism 6 is triggered. Conversely, the thicker the patient's arm, the shorter the interval time when the ventilation and dehumidification mechanism 6 is triggered. When the patient's arm is thinner, the feedback plate 54 drives the pressing round head 57 to move a longer distance, so that the pressing round head 57 acts on the power adjustment switch 58 on the rear side, thereby making the working power of the fan 68 smaller. Conversely, the thicker the patient's arm, the shorter the moving distance of the pressing round head 57, and when it acts on the power adjustment switch 58 on the front side, the working power of the fan 68 will be larger. The interval time of ventilation and dehumidification can be automatically adjusted based on the thickness of the patient's arm to meet the needs of patients with thicker arms to adopt higher frequency ventilation and dehumidification work, and to avoid the problem that patients with thicker arms have a larger contact area with the arm sleeve 1, resulting in more friction and heat accumulation, and thus infrequent ventilation and dehumidification work will still cause damage to the patient's arm skin.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A catheter care and fixing device for intravenous therapy, comprising an arm sleeve (1), characterized in that: A catheter guide clamping mechanism (2) is fixedly mounted on the upper end of the arm sleeve (1), a pressurizing fixing mechanism (3) is fixedly mounted on the arm sleeve (1), a pressurizing in place confirmation mechanism (4) connected to the pressurizing fixing mechanism (3) is also fixedly mounted on the outer wall of the arm sleeve (1), an arm thickness detection feedback mechanism (5) located on one side of the pressurizing fixing mechanism (3) is fixedly mounted on the outer wall of the arm sleeve (1), ventilation and dehumidification mechanisms (6) are mounted on both end surfaces of the arm sleeve (1), an intermittent starting mechanism (7) and an alarm (8) are also fixedly mounted on the outer wall of the arm sleeve (1), the intermittent starting mechanism (7) is used to control the action of the ventilation and dehumidification mechanism (6), and a PLC controller (9) is also fixedly mounted on the outer wall of the arm sleeve (1), the PLC controller (9) is electrically connected to the catheter guide clamping mechanism (2), the pressurizing fixing mechanism (3), the pressurizing in place confirmation mechanism (4), the arm thickness detection feedback mechanism (5), the ventilation and dehumidification mechanism (6) and the intermittent starting mechanism (7), respectively; The catheter guide clamping mechanism (2) comprises a catheter clamping tube (21) fixedly connected to the upper end of the arm sleeve (1); an extension clamping tube (22) is provided at the front end of the catheter clamping tube (21); upper and lower ends of the extension clamping tube (22) are fixedly connected to a movable rod (23); upper and lower ends of the catheter clamping tube (21) are fixedly connected to a positioning seat (24) connected to the movable rod (23) by a sleeve; and a rear end of the movable rod (23) is fixedly connected to a pressing plate (25). A compensation spring (26) sleeved on the outside of the movable rod (23) is fixedly connected between the pressing plate (25) and the positioning seat (24); a pressure switch (27) is fixedly connected to the rear side of the positioning seat (24); two L-shaped fixing plates (28) are symmetrically fixedly connected to the rear side of the catheter clamping tube (21); a micro electric push rod (29) is fixedly inserted on the surface of the L-shaped fixing plate (28); and an extrusion plate (210) is fixedly connected to the output end of the micro electric push rod (29); The pressurizing and fixing mechanism (3) comprises an elastic anti-skid airbag (31) fixedly connected to the inner wall of the arm sleeve (1); a forward and reverse air pump (32) is fixedly installed on the outer wall of the arm sleeve (1); an output end of the forward and reverse air pump (32) is fixedly connected to a ventilation pipe (33); one end of the ventilation pipe (33) is fixedly connected to the elastic anti-skid airbag (31); The pressurized in-place confirmation mechanism (4) comprises a confirmation cylinder (41), the front end of which is fixedly connected to the ventilation pipe (33) via an air distribution pipe (42), a piston plate (43) is arranged inside the confirmation cylinder (41), the front side of the piston plate (43) is symmetrically fixedly connected to two guide slide bars (44), the front end of the guide slide bars (44) passes through the front end of the confirmation cylinder (41), the front side of the inner wall of the confirmation cylinder (41) and the side wall of the piston plate (43) are fixedly connected to two return springs (45) respectively sleeved on the outside of the two guide slide bars (44), and a confirmation switch (46) is fixedly installed on the rear side of the inner wall of the confirmation cylinder (41).

2. A catheter care and fixing device for intravenous therapy according to claim 1, characterized in that: The arm thickness detection feedback mechanism (5) comprises a feedback shell (51), the inner wall of the feedback shell (51) is rotatably connected to a transmission screw (52), a reduction synchronous motor (53) for driving the transmission screw (52) to rotate is fixedly mounted on the front side of the feedback shell (51), a feedback plate (54) is threadedly sleeved on the rod wall of the transmission screw (52), a conductive contact piece (55) is fixedly connected to the lower end of the feedback plate (54), a resistor rod (56) in electrical contact with the conductive contact piece (55) is fixedly mounted on the lower side of the inner wall of the feedback shell (51), a pressing round head (57) is fixedly connected to the upper end of the feedback plate (54), and a plurality of power adjustment switches (58) are evenly fixedly mounted on the upper side of the inner wall of the feedback shell (51).

3. The intravenous therapy catheter care and fixing device according to claim 1, characterized in that: The ventilation and dehumidification mechanism (6) comprises a plurality of covers (61) uniformly fixedly connected to the outer wall of the arm sleeve (1); the surface of the arm sleeve (1) is symmetrically and movablely sleeved with two push-pull rods (62) located in the covers (61); one end of the two push-pull rods (62) located in the covers (61) is fixedly connected to the same push-pull plate (63); and two push-back springs (64) sleeved outside the push-pull rods (62) are fixedly connected between the push-pull plate (63) and the arm sleeve (1). ), a thrust permanent magnet plate (65) is fixedly connected to a side of the push-pull plate (63) away from the arm sleeve (1), a thrust electromagnetic plate (66) is fixedly mounted on the inner wall of the cover shell (61), one end of the two push-pull rods (62) located in the arm sleeve (1) is fixedly connected to a same mounting plate (67), a fan (68) is embedded on the surface of the mounting plate (67), and an arc-shaped anti-drop plate (69) is fixedly connected to one end of the mounting plate (67) away from the push-pull rods (62).

4. The intravenous therapy catheter care and fixing device according to claim 1, characterized in that: The intermittent starting mechanism (7) comprises a starting round shell (71), a rotating shaft (72) is rotatably connected to the center of the inner wall of the starting round shell (71), a micro reduction motor (73) for driving the rotating shaft (72) to rotate is fixedly mounted on the outer wall of the starting round shell (71), a connecting rod (74) is fixedly sleeved on the shaft wall of the rotating shaft (72), one end of the connecting rod (74) is fixedly connected to an arc-shaped pressing block (75), and a starting switch (76) is fixedly mounted on one side of the inner wall of the starting round shell (71).

5. The intravenous therapy catheter care and fixing device according to claim 2, characterized in that: The feedback plate (54) is fixedly connected to limit sliders on both opposite sides thereof, and a limit sliding groove matching and slidingly connected with the limit slider is provided on the rear side of the inner wall of the feedback shell (51).

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