Clinical catheter traction device for kidney internal medicine

Abstract

The invention relates to the technical field of catheter traction, in particular to a clinical catheter traction device for the kidney internal medicine department, which comprises a fixing frame and a connecting frame which are mounted on one side of a sickbed, and the connecting frame is positioned at the liftable end of the sickbed, and is characterized in that a traction frame is mounted on the fixing frame, and a swing arm is mounted on the connecting frame; the clinical catheter traction device for the kidney internal medicine department is characterized in that a swing arm is arranged on the bed body, a swing ball is arranged on the swing arm in a sliding mode, and a catheter traction unit connected with the traction frame is arranged on the fixing frame and used for driving the traction frame to pull a catheter inserted into the body of a patient. The angle change of the swing arm is accurately converted into the vertical displacement of the lifting assembly, and the full-automatic body position adaptation function is achieved. The core innovation of the system lies in that the length of a force arm is changed by adjusting the position of a swing ball, a compensation mechanism is formed, a patient with large weight can obtain higher swing torque, and the traction height is automatically increased to resist abdominal pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of catheter traction, in particular to a catheter traction device for clinical use in nephrology. Background Art

[0002] As a core part of medical practice, clinical nursing focuses on applying professional knowledge and skills to provide patients with comprehensive, systematic, and scientific assessment, intervention, and care to promote health, prevent disease, restore function, and improve quality of life. In clinical nursing practice in nephrology, blood purification therapy to maintain the life safety of patients with end-stage renal disease is highly dependent on safe and effective vascular access. Central venous catheters, as a critical lifeline, assume the core function of extracorporeal blood drainage. They are particularly suitable for patients who cannot establish autologous arteriovenous fistulas due to limited vascular conditions or who need to urgently initiate dialysis treatment. Their clinical value is not only reflected in their emergency role as a temporary or transitional access, but also in meeting multiple requirements such as repeated puncture tolerance, continuous and stable blood flow supply, and low infection risk through scientific design and standardized operation, thereby ensuring the effectiveness of treatment.

[0003] During hemodialysis treatment in the nephrology department, patients may need to sit up temporarily due to respiratory distress, eating, or body comfort needs. This action may cause the central venous catheter to shift or slip, which in turn may lead to the risk of bleeding at the puncture site, vascular damage, and even treatment interruption. It is necessary to adjust the height of the catheter to adapt to the patient's body changes. However, traditional adjustment relies on manual adjustment by medical staff, and manual operation requires medical staff to respond to changes in body position in real time. In emergency situations or when manpower is insufficient, response delays are prone to occur, causing the catheter to shift or slip due to traction, thereby inducing puncture site bleeding, vascular wall damage, and treatment interruption. At the same time, frequent manual adjustments not only increase the workload of medical staff, but also require high-precision operations in a small space. Operator fatigue or environmental interference may easily lead to uneven fixation force and position deviation, which in turn aggravates the risk of catheter stability. To this end, we propose a catheter traction device for clinical nephrology. Summary of the Invention

[0004] One of the technical problems to be solved by this application is that traditional adjustment relies on manual adjustment by medical staff, and manual operation requires medical staff to respond to changes in body position in real time. In emergency situations or when there is insufficient manpower, response delays are prone to occur, causing the catheter to shift or slip due to traction, thereby inducing bleeding at the puncture site, damage to the blood vessel wall, and interruption of treatment.

[0005] To solve the above technical problems, the embodiment of the present application provides a catheter traction device for clinical use in a nephrology department, which comprises a fixing frame installed on one side of a hospital bed and a connecting frame, and the connecting frame is located at the liftable end of the hospital bed; a traction frame is installed on the fixing frame; an oscillating arm is installed on the connecting frame; an oscillating ball is slidably arranged on the oscillating arm; a catheter traction unit connected with the traction frame is arranged on the fixing frame, so as to drive the traction frame to pull the catheter inserted into the patient; an adaptive adjustment unit connected with the oscillating arm and the oscillating ball is arranged on the fixing frame, so as to drive the oscillating ball to rotate the oscillating arm under the action of gravity when the patient is sitting up by lifting the hospital bed; and a lifting piece connected with the traction frame is arranged on the fixing frame, so as to control the vertical lifting distance of the traction frame according to the rotation angle of the oscillating arm.

[0006] In some embodiments, the catheter traction unit comprises a mounting piece arranged on the fixing frame, the traction frame is mounted and fixed by the mounting piece, and a traction piece is arranged on the traction frame, which is used to pull the catheter inserted into the patient.

[0007] In some embodiments, the mounting piece comprises a rotating screw rod rotatably arranged on the fixing frame, a lifting rod is arranged on the rotating screw rod and is threadedly connected with the rotating screw rod, a connecting plate is arranged on the lifting rod, an extension rod is arranged on the fixing frame and one end of the extension rod is connected with the connecting plate, a fixing seat is arranged on the connecting plate, the fixing seat is rotatably connected with the traction frame, a torsional spring is arranged on the fixing seat and is connected with the traction frame.

[0008] In some embodiments, the traction piece comprises a plurality of traction grooves formed in the traction frame, a silica gel sleeve is arranged in each of the plurality of traction grooves, and the catheter passes through the silica gel sleeve, the catheter between two silica gel sleeves is in a drooping state, a plurality of guide tubes are arranged on the traction frame, the guide tubes are arc-shaped tubes, and the catheter passes through the guide tubes.

[0009] In some embodiments, the adaptive adjustment unit comprises a trigger arranged on the connecting frame, which is used to sense the body position state of the patient, a power piece is arranged on the fixing frame, which is used to provide power for the lifting and lowering of the traction frame, and a locking piece is arranged on the fixing frame, which is used to lock the traction frame after the traction frame is lifted to a specified height.

[0010] In some embodiments, the trigger comprises a pressure chamber arranged on the connecting frame, a piston plate one is arranged in the pressure chamber in a sliding manner, a plurality of telescopic limiting rods are arranged in the pressure chamber, one end of the limiting rod one is connected with the piston plate one, an extrusion rod is arranged on the side of the piston plate one away from the limiting rod one, a rotating shaft is arranged on the pressure chamber in a rotating manner, the rotating shaft is located on the side of the piston plate one away from the limiting rod one, a butt joint groove is formed in the rotating shaft, the butt joint groove is movably connected with the extrusion rod, a spiral groove is formed in the butt joint groove, a push rod is arranged on the extrusion rod in a sliding connection with the spiral groove, the rotating shaft is connected with the swing arm, and a scale mark is arranged on the swing arm, and an extrusion screw rod is arranged on the swing ball in a threaded connection with the swing ball.

[0011] In some embodiments, the power comprises a power chamber arranged on the fixed frame, a guide pipe is arranged on the power chamber, one end of the guide pipe is communicated with the pressure chamber, a piston plate two is arranged in the power chamber in a sliding manner, an extrusion spring is arranged in the power chamber away from one end of the guide pipe, one end of the extrusion spring is connected with the piston plate two, a power rack is arranged on the side of the piston plate two connected with the extrusion spring, the power rack passes through the power chamber and is movably connected with the power chamber, a positioning plate is arranged on the fixed frame, a plurality of transmission shafts are arranged on the positioning plate in a rotating manner, and an amplification gear set is arranged on the transmission shaft in engagement with the power rack.

[0012] In some embodiments, the locking piece comprises a locking gear arranged on the rotating screw rod, a locking block is arranged on the fixed frame in a sliding manner, a clamping plate is arranged on the fixed frame, a locking screw rod is arranged on the clamping plate in a rotating manner, and the locking screw rod is in a threaded connection with the locking block.

[0013] In some embodiments, the lifting piece comprises a fixed plate arranged on the fixed frame, an extension rod is arranged on the fixed plate in a rotating manner, a transmission belt pulley is arranged on each of the extension rod and the transmission shaft, a transmission belt is sleeved on the transmission belt pulley, an adjusting belt pulley is arranged on each of the extension rod and the rotating screw rod, and an adjusting belt is sleeved on the adjusting belt pulley.

[0014] In some embodiments, the fixed frame is provided with an air inflation chamber, a piston plate three is arranged in the air inflation chamber in a sliding manner, a pull rod is arranged on the piston plate three, the pull rod passes through the air inflation chamber and is connected with a connecting plate, the connecting plate is provided with an inflatable air bag, the air inflation chamber is provided with an air hose, and the air hose is connected with the inflatable air bag.

[0015] The present application has at least the following advantages:

[0016] 1. This catheter traction device adopts a purely mechanical gravity conduction mechanism. When the patient's body position changes and causes the bed to tilt, the pendulum ball swings naturally under the action of gravity, and the change in the swing arm angle is accurately converted into the vertical displacement of the lifting component, realizing a fully automatic body position adaptation function. The core innovation of the system lies in changing the length of the lever arm by adjusting the position of the pendulum ball to form a compensation mechanism. Heavier patients can obtain a stronger swing torque, automatically increasing the traction height to counteract abdominal pressure; lighter patients can reduce the traction force to avoid tissue damage caused by excessive traction, accurately meeting the differentiated care needs of patients of different body sizes.

[0017] 2. The traction frame height is optimized in real time as the patient's weight and body position change, ensuring that the catheter tension is always maintained within the safe threshold, significantly reducing the risk of catheter displacement, wall adhesion, and folding. At the same time, by reducing skin shear force, it effectively prevents pressure sores and traction injuries. During clinical nursing operations, the nurse only needs to preset the initial position of the swing ball according to the patient's weight. All subsequent position adjustments are responded to autonomously by the system, greatly reducing the intensity of nursing care. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention in a non-installed state;

[0020] Figure 3 This is a schematic diagram of the trigger structure of the present invention;

[0021] Figure 4 For the present invention Figure 3 Schematic diagram of explosion structure;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the rotating shaft of the present invention;

[0023] Figure 6 This is a schematic diagram of the power component structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the partial cutaway structure of the power compartment of the present invention;

[0025] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of area A in the middle;

[0026] Figure 9 This is a schematic diagram of the catheter traction structure of the present invention;

[0027] Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure of the middle B area;

[0028] Figure 11 This is a schematic diagram of the exploded structure of the mounting piece of the present invention;

[0029] Figure 12 Structure diagram of embodiment two of the present application.

[0030] In the figure: 1, fixed frame; 2, connecting frame; 3, swing arm; 4, swing ball; 5, traction frame; 6, catheter traction unit; 7, mounting; 71, rotating screw; 72, lifting rod; 73, connecting plate; 74, telescopic rod; 75, fixed seat; 8, traction; 81, traction slot; 82, silica gel sleeve; 83, guide tube; 9, adaptive adjustment unit; 91, trigger; 92, pressure chamber; 93, piston plate one; 94, limiting rod; 95, extrusion rod; 96, rotating shaft; 97, butt joint slot; 98, spiral slot; 99, push rod; 910, scale mark; 911, extrusion screw; 10, power; 101, power chamber; 102, flow guide tube; 103, piston plate two; 104, extrusion spring; 105, power rack; 106, positioning plate; 107, transmission shaft; 108, amplification gear set; 11, locking; 111, locking gear; 112, locking slider; 113, clamping plate; 114, locking screw; 12, lifting; 121, transmission pulley; 122, transmission belt; 123, fixed plate; 124, extension rod; 125, adjustment pulley; 126, adjustment belt; 13, air inflation chamber; 14, piston plate three; 15, pull rod; 16, inflatable air bag; 17, air hose. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] Embodiment 1: please refer to Figures 1-11 The present application provides a technical solution: a catheter traction device for clinical use in nephrology, comprising a fixed frame 1 installed on one side of a hospital bed and a connecting frame 2, and the connecting frame 2 is located at the liftable end of the hospital bed, a traction frame 5 is installed on the fixed frame 1, a swing arm 3 is installed on the connecting frame 2, a swing ball 4 is slidably arranged on the swing arm 3, a catheter traction unit 6 connected with the traction frame 5 is arranged on the fixed frame 1 to drive the traction frame 5 to traction the catheter inserted into the patient's body, an adaptive adjustment unit 9 connected with the swing arm 3 and the swing ball 4 is arranged on the fixed frame 1 to drive the swing ball 4 to rotate the swing arm 3 under the action of gravity when the patient is sitting up by lifting the hospital bed, a lifting device 12 connected with the traction frame 5 is arranged on the fixed frame 1 to control the vertical lifting distance of the traction frame 5 according to the rotation angle of the swing arm 3.

[0033] The catheter traction unit 6 comprises a mounting piece 7 arranged on the fixed frame 1, by which the traction frame 5 is mounted and fixed, and the traction piece 8 is arranged on the traction frame 5, by which the catheter inserted into the patient's body is pulled.

[0034] The mounting piece 7 comprises a rotating screw rod 71 arranged on the fixed frame 1, the lifting rod 72 is arranged on the rotating screw rod 71, and the lifting rod 72 is threadedly connected with the rotating screw rod 71, the connecting plate 73 is arranged on the lifting rod 72, the telescopic rod 74 is arranged on the fixed frame 1, and one end of the telescopic rod 74 is connected with the connecting plate 73, the fixed seat 75 is arranged on the connecting plate 73, the fixed seat 75 is rotationally connected with the traction frame 5, the torsional spring is arranged on the fixed seat 75, and the torsional spring is connected with the traction frame 5.

[0035] The fixed frame 1 and the connecting frame 2 are independently mounted and can be quickly disassembled and replaced, which greatly reduces the equipment maintenance complexity and downtime, and the rotationally connected traction frame 5 and fixed seat 75 cooperate with the torsional spring to allow the traction frame 5 to slightly self-adaptively deflect when the load changes, can buffer the instantaneous impact force, thereby reducing the risk of stress concentration of the mechanical structure, and the torsional spring can provide the automatic righting force after the deflection of the traction frame 5, can absorb energy through elastic deformation when the abnormal external force is out of limit, and avoids the fracture of the rigid structure or the jamming of the transmission piece.

[0036] The traction piece 8 comprises a plurality of traction grooves 81 opened in the traction frame 5, a silica gel sleeve 82 is arranged in each of the plurality of traction grooves 81, and the catheter passes through the silica gel sleeve 82, the catheter between the two silica gel sleeves 82 is in a drooping state, a plurality of guide tubes 83 are arranged on the traction frame 5, the guide tubes 83 are arc-shaped round tubes, and the catheter passes through the guide tubes 83.

[0037] The arc-shaped guide tube 83 constrains the catheter trajectory with smooth curvature, avoids the pressure or folding of the lumen caused by sharp angle bending, and ensures the smoothness of drainage; at the same time, the silica gel sleeve 82 elastically wraps the catheter, absorbs the instantaneous pulling force generated by the change of the patient's body position, and reduces the risk of shear damage between the catheter and the body surface puncture point; the catheter naturally droops to form a buffer arc between adjacent silica gel sleeves 82, and the external tension is automatically relaxed through gravity to prevent the pipe wall from being excessively stretched and deformed; the distributed fixing of the plurality of traction grooves 81 realizes the multi-point constraint of the whole length of the catheter, reduces the probability of overall slippage caused by single-point failure, the silica gel sleeve 82 isolates the direct contact between the catheter and the metal or hard plastic groove body, avoids the mechanical wear and tear of the pipe wall, and finally the design of the arc-shaped guide tube 83 can avoid the dead angle of bending.

[0038] The adaptive adjusting unit 9 comprises a trigger 91 arranged on the connecting frame 2, the trigger 91 is used to sense the body position of the patient, the fixed frame 1 is arranged with a power element 10, the power element 10 is used to provide power for the lifting and lowering of the traction frame 5, the fixed frame 1 is arranged with a locking element 11, the locking element 11 is used to lock the traction frame 5 after the traction frame 5 is lifted to a specified height.

[0039] The trigger 91 comprises a pressure chamber 92 arranged on the connecting frame 2, a piston plate one 93 is slidably arranged in the pressure chamber 92, a plurality of telescopic limiting rods 94 are arranged in the pressure chamber 92, one end of the limiting rod 94 is connected with the piston plate one 93, an extrusion rod 95 is arranged on the side of the piston plate one 93 away from the limiting rod 94, a rotating shaft 96 is rotatably arranged on the pressure chamber 92, the rotating shaft 96 is located on the side of the piston plate one 93 away from the limiting rod 94, a butt joint groove 97 is formed in the rotating shaft 96, the butt joint groove 97 is movably connected with the extrusion rod 95, a spiral groove 98 is formed in the butt joint groove 97, a pushing rod 99 is arranged on the extrusion rod 95 and slidably connected with the spiral groove 98, the rotating shaft 96 is connected with the swing arm 3, a scale mark 910 is arranged on the swing arm 3, an extrusion screw rod 911 is arranged on the swing ball 4 and threadedly connected with the swing ball 4.

[0040] When the patient needs to sit up, the medical staff first controls the liftable end of the hospital bed to rise, lifts the upper part of the patient's body, at this time, the connecting frame 2 located at the liftable part of the hospital bed rises synchronously with the hospital bed, when the hospital bed rises, the swing ball 4 on the swing arm 3 is always kept perpendicular to the ground due to the influence of gravity, so as to cause the swing arm 3 to rotate synchronously when the hospital bed lifts the patient, the swing arm 3 drives the rotating shaft 96 connected therewith to rotate when the swing arm 3 rotates, the rotating shaft 96 drives the spiral groove 98 formed in the butt joint groove 97 to rotate synchronously when the rotating shaft 96 rotates, so as to drive the pushing rod 99 and the extrusion rod 95 connected with the pushing rod 99 to move through the spiral groove 98, the extrusion rod 95 drives the piston plate one 93 to move in the pressure chamber 92, and the hydraulic oil in the pressure chamber 92 is extruded, at the same time, the medical staff can adjust the position of the swing ball 4 on the swing arm 3 in advance according to the different weight of the patient, so as to adjust the rotation angle of the swing arm 3 to adapt to patients with different weights.

[0041] The swing ball 4 is always kept vertical under the action of gravity, so that the rotation angle of the swing arm 3 is strictly synchronized with the lifting height of the hospital bed, ensuring that the mechanical transmission system responds to the change of the patient's body position in real time, and at the same time, the rotation of the swing arm 3 is converted into the linear displacement of the extrusion rod 95 through the screw groove 98-pushing rod 99 structure, driving the hydraulic oil pressure change. This design combines the advantages of rigid positioning of mechanical transmission and flexible buffering of hydraulic system: mechanical components provide precise displacement control, and hydraulic oil dynamically absorbs body position mutation kinetic energy to prevent sudden changes in lifting speed from causing patient discomfort or pipe pulling injury. In addition, medical staff can adjust the position of the swing ball 4 on the swing arm 3 to change the swing torque and accurately adapt to the needs of patients of different weights for traction force. Patients with higher body weight can obtain stronger swing torque and automatically increase the traction height to resist abdominal pressure; patients with lower body weight can reduce the traction force to avoid tissue damage caused by excessive traction, and accurately meet the differentiated nursing needs of patients of different sizes.

[0042] The power part 10 comprises a power bin 101 arranged on the fixed frame 1, a flow guide pipe 102 is arranged on the power bin 101, one end of the flow guide pipe 102 is communicated with the pressure bin 92, a piston plate two 103 is slidably arranged in the power bin 101, an extrusion spring 104 is arranged in the power bin 101 away from one end of the flow guide pipe 102, one end of the extrusion spring 104 is connected with the piston plate two 103, a power rack 105 is arranged on the side of the piston plate two 103 connected with the extrusion spring 104, the power rack 105 passes through the power bin 101 and is slidably connected with the power bin 101, a positioning plate 106 is arranged on the fixed frame 1, a plurality of transmission shafts 107 are rotatably arranged on the positioning plate 106, and an amplification gear set 108 meshing with the power rack 105 is arranged on the transmission shaft 107.

[0043] When the hydraulic oil in the pressure bin 92 is pressurized, it enters the power bin 101 through the flow guide pipe 102. At this time, the pressure in the power bin 101 increases, thereby pushing the piston plate two 103 to move against the elastic force of the extrusion spring 104. The piston plate two 103 moves to drive the power rack 105 connected therewith to move. The power rack 105 moves while driving the amplification gear set 108 meshing therewith to rotate. The arrangement of the amplification gear set 108 can enlarge the movement path of the piston plate two 103, so that the traction frame 5 can obtain sufficient lifting distance.

[0044] The hydraulic oil is transmitted to the power bin 101 through the flow guide pipe 102 after being pressurized, and the force is transmitted without delay by using the incompressible characteristics of the fluid, and the oil viscous damping absorbs the mechanical impact, ensuring that the traction frame 5 moves smoothly and without jerk, the piston plate two 103 pushes the power rack 105 to drive the amplification gear set 108, and through the optimization of the gear ratio, the small hydraulic displacement is converted into the large stroke lifting of the traction frame 5, solving the problem of large lifting of the traction height in limited space, and the compression spring 104 can also provide a reverse reset force for the piston plate two 103, and the compression spring can buffer overload when the traction resistance abnormally increases, avoiding hydraulic system overpressure burst or mechanical structure damage.

[0045] The locking member 11 comprises a locking gear 111 arranged on the rotating lead screw 71, a locking block 112 is arranged on the fixed frame 1 in a sliding manner, a clamping plate 113 is arranged on the fixed frame 1, and a locking lead screw 114 is arranged on the clamping plate 113 in a rotating manner, and the locking lead screw 114 is threadedly connected with the locking block 112.

[0046] When the traction frame 5 rises to a specified height, medical staff can drive the locking block 112 to move by rotating the locking lead screw 114, so that the locking block 112 is engaged with the locking gear 111, thereby avoiding the height fluctuation of the traction frame 5 caused by the swing arm 3 affected by the external environment.

[0047] The medical staff drives the locking block 112 to engage with the locking gear 111 by rotating the locking lead screw 114, forms a rigid mechanical interlocking, completely eliminates the height drift of the traction frame 5 caused by the swing arm 3 due to external vibration, patient activity or equipment resonance, ensures that the catheter traction force is continuous and constant, the manual lead screw adjustment provides intuitive torque feedback, avoids the risk of overlocking or underlocking, and the locking process does not require electricity or complex tools, thereby improving the applicability of the device.

[0048] The lifting member 12 comprises a fixed plate 123 arranged on the fixed frame 1, an extension rod 124 is arranged on the fixed plate 123 in a rotating manner, a transmission pulley 121 is arranged on the extension rod 124 and the transmission shaft 107, a transmission belt 122 is sleeved on the transmission pulley 121, an adjusting pulley 125 is arranged on the extension rod 124 and the rotating lead screw 71, and an adjusting belt 126 is sleeved on the adjusting pulley 125.

[0049] The transmission shaft 107 drives the transmission pulley 121 arranged thereon to rotate, the transmission pulley 121 rotates, drives the extension shaft to rotate through the transmission belt 122, the extension shaft drives the adjusting pulley 125 arranged thereon to rotate, the adjusting pulley 125 drives the adjusting belt 126 sleeved thereon to rotate, and the rotating lead screw 71 is driven to rotate through the adjusting pulley 125 on the rotating lead screw 71, the rotating lead screw 71 rotates, drives the lifting rod 72 and the traction frame 5 mounted on the lifting rod 72 to rise.

[0050] Embodiment 2: please refer to Figure 12 The application provides a technical scheme: a fixing frame 1 is provided with an air inflation bin 13, a piston plate three 14 is slidably arranged in the air inflation bin 13, a pull rod 15 is arranged on the piston plate three 14, the pull rod 15 passes through the air inflation bin 13 and is connected with a connecting plate 73, the connecting plate 73 is provided with an inflatable air bag 16, the air inflation bin 13 is provided with an air guide hose 17, and the air guide hose 17 is connected with the inflatable air bag 16.

[0051] When the connecting plate 73 rises, the pull rod 15 is driven to rise, the pull rod 15 is driven to rise and drives the piston plate three 14 to rise, so that the gas in the air inflation bin 13 enters the inflatable air bag 16 through the air guide hose 17, the inflatable air bag 16 is inflated, one side of the traction frame 5 is jacked up, and the traction frame 5 is deflected while the patient sits up.

[0052] The gas in the air inflation bin 13 is pushed by the piston plate three 14 and injected into the inflatable air bag 16 through the air guide hose 17, the flexible output of the deflection force of the traction frame 5 is realized by using the compressible characteristics of the gas, mechanical impact caused by rigid adjustment is avoided, the air bag is directionally inflated to press one side of the traction frame 5, a controllable torque is formed, the deflection angle is accurately matched with the change of the body position of the patient, the deflection action of the traction frame 5 is synchronously responded while the patient sits up, the consistency of the catheter traction direction and the physiological curvature is continuously maintained through adaptive redistribution of the gas pressure, and the risk of catheter displacement or distortion caused by sudden change of the body position is reduced.

[0053] It should be noted that, in the present document, the terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms “comprising”, “containing” or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0054] Although the embodiments of the application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the application.

Claims

1. A catheter traction device for use in the clinical treatment of kidney diseases, comprising a fixed frame (1) mounted on one side of a hospital bed and a connecting frame (2), the connecting frame (2) being located at the end of the hospital bed that can be raised, characterized in that: The fixed frame (1) is provided with a traction frame (5), the connecting frame (2) is provided with a swing arm (3), the swing arm (3) is provided with a swing ball (4) slidingly, the fixed frame (1) is provided with a catheter traction unit (6) connected with the traction frame (5), so as to drive the traction frame (5) to traction the catheter inserted into the patient, the fixed frame (1) is provided with an adaptive adjustment unit (9) connected with the swing arm (3) and the swing ball (4), so as to drive the swing ball (4) to rotate the swing arm (3) under the action of gravity when the patient is lifted by the bed, the fixed frame (1) is provided with a lifting piece (12) connected with the traction frame (5), and the lifting distance of the traction frame (5) is controlled according to the rotation angle of the swing arm (3) through the lifting piece (12).

2. The nephrology clinical catheter traction device according to claim 1, characterized in that: The catheter traction unit (6) comprises a mounting piece (7) arranged on the fixed frame (1), and the traction frame (5) is mounted and fixed through the mounting piece (7), and the traction frame (5) is provided with a traction piece (8) for traction of the catheter inserted into the patient.

3. The nephrology clinical catheter traction device according to claim 2, wherein: The mounting piece (7) comprises a rotating screw rod (71) rotatably arranged on the fixed frame (1), the rotating screw rod (71) is provided with a lifting rod (72), and the lifting rod (72) is threadedly connected with the rotating screw rod (71), the lifting rod (72) is provided with a connecting plate (73), the fixed frame (1) is provided with a telescopic rod (74), one end of the telescopic rod (74) is connected with the connecting plate (73), the connecting plate (73) is provided with a fixed seat (75), the fixed seat (75) is rotatably connected with the traction frame (5), the fixed seat (75) is provided with a torsional spring, and the torsional spring is connected with the traction frame (5).

4. The nephrology clinical catheter-traction device according to claim 3, characterized in that: The traction piece (8) comprises a plurality of traction grooves (81) formed in the traction frame (5), a plurality of silica gel sleeves (82) are arranged in the traction grooves (81), the catheter passes through the silica gel sleeves (82), the catheter between the two silica gel sleeves (82) is in a drooping state, a plurality of guide pipes (83) are arranged on the traction frame (5), the guide pipes (83) are arc-shaped pipes, and the catheter passes through the guide pipes (83).

5. The nephrology clinical catheter-traction device according to claim 4, characterized in that: The adaptive adjustment unit (9) comprises a trigger (91) arranged on the connecting frame (2), the trigger (91) is used for sensing the body position state of the patient, the fixed frame (1) is provided with a power piece (10), the power piece (10) is used for providing power for the lifting and lowering of the traction frame (5), and the fixed frame (1) is provided with a locking piece (11), the locking piece (11) is used for locking the traction frame (5) after the traction frame (5) is lifted to a specified height.

6. The nephrology clinical catheter-traction device according to claim 5, characterized in that: The trigger (91) comprises a pressure chamber (92) arranged on the connecting frame (2), a piston plate I (93) is slidably arranged in the pressure chamber (92), a plurality of telescopic limiting rods (94) are arranged in the pressure chamber (92), one end of the limiting rod (94) is connected with the piston plate I (93), an extrusion rod (95) is arranged on the side of the piston plate I (93) away from the limiting rod (94), a rotating shaft (96) is rotatably arranged on the pressure chamber (92), the rotating shaft (96) is located on the side of the piston plate I (93) away from the limiting rod (94), a butt joint groove (97) is formed in the rotating shaft (96) and movably connected with the extrusion rod (95), a spiral groove (98) is formed in the butt joint groove (97), a pushing rod (99) slidably connected with the spiral groove (98) is arranged on the extrusion rod (95), the rotating shaft (96) is connected with the swing arm (3), and a scale mark (910) is arranged on the swing arm (3), an extrusion screw rod (911) is arranged on the swing ball (4), and the extrusion screw rod (911) is threadedly connected with the swing ball (4).

7. The nephrology clinical catheter-traction device according to claim 6, characterized in that: The power part (10) comprises a power chamber (101) arranged on the fixed frame (1), a flow guide pipe (102) is arranged on the power chamber (101), one end of the flow guide pipe (102) is communicated with the pressure chamber (92), a piston plate II (103) is slidably arranged in the power chamber (101), an extrusion spring (104) is arranged in the power chamber (101) away from one end of the flow guide pipe (102), one end of the extrusion spring (104) is connected with the piston plate II (103), a power rack (105) is arranged on the side of the piston plate II (103) connected with the extrusion spring (104), the power rack (105) penetrates through the power chamber (101) and is slidably connected with the power chamber (101), a positioning plate (106) is arranged on the fixed frame (1), a plurality of transmission shafts (107) are rotatably arranged on the positioning plate (106), and an amplification gear set (108) meshing with the power rack (105) is arranged on the transmission shaft (107).

8. The nephrology clinical catheter-traction device according to claim 7, characterized in that: The locking part (11) comprises a locking gear (111) arranged on the rotating screw rod (71), a locking block (112) is slidably arranged on the fixed frame (1), a clamping plate (113) is arranged on the fixed frame (1), a locking screw rod (114) is rotatably arranged on the clamping plate (113), and the locking screw rod (114) is threadedly connected with the locking block (112).

9. The nephrology clinical catheter-traction device according to claim 8, characterized in that: The lifting piece (12) comprises a fixed plate (123) arranged on the fixed frame (1), a extending rod (124) is rotatably arranged on the fixed plate (123), a transmission pulley (121) is arranged on the extending rod (124) and the transmission shaft (107), a transmission belt (122) is sleeved on the transmission pulley (121), an adjusting pulley (125) is arranged on the extending rod (124) and the rotating lead screw (71), and an adjusting belt (126) is sleeved on the adjusting pulley (125).

10. The nephrology clinical catheter-traction device according to claim 9, characterized in that: The fixed frame (1) is provided with an air inflation bin (13), a piston plate three (14) is slidably arranged in the air inflation bin (13), a pull rod (15) is arranged on the piston plate three (14), the pull rod (15) passes through the air inflation bin (13) and is connected with a connecting plate (73), the connecting plate (73) is provided with an inflatable air bag (16), the air inflation bin (13) is provided with an air guide hose (17), and the air guide hose (17) is connected with the inflatable air bag (16).

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