A puncture and fixation device for a medium-length catheter

Abstract

This invention discloses a puncture and fixation device for a medium-length catheter, comprising a support box, a scanning component, two massage components, two stretching components, and an adjustment component. A mounting base is fixedly connected inside the support box, and two mounting plates are also fixedly connected inside the support box. By turning two knobs, the invention rotates two second lead screws, which in turn drive two first racks to rotate gears. At this time, the gears, under the action of the first racks, drive the second racks and the lifting seat to slide upwards, causing the corrugated airbag to lift the "bat sleeve" (armpit). Subsequently, turning the second sleeve causes the fourth lead screw to lower the arc-shaped mounting block and the corrugated arc block. Under the action of a second spring, the corrugated arc block tightly adheres to the patient's arm, and as it descends, it pulls down the patient's wrinkled skin, providing a reliable point of force for puncture and significantly improving the success rate of puncture.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a puncture and fixation device for a medium-length catheter. Background Technology

[0002] As an important medical and nursing procedure, intravenous puncture aims to ensure timely treatment for elderly patients with serious illnesses and chronic diseases, reduce the pain caused by repeated punctures, lower medical costs, and ensure the effectiveness and safety of patient treatment.

[0003] The patent publication number "CN221535360U" discloses a puncture guide for a medium-length catheter. Through the setting of a limiting component, when using this puncture device, medical personnel loosen the bolts fixing the sliding plate and the fixed ring. Then, the medical personnel rotate the limiting cylinder, causing the sliding plate to slide on top of the fixed ring. Simultaneously, the rotating wheel rotates inside the arc-shaped groove. When the limiting cylinder is in the appropriate position, the medical personnel tighten the bolts again to stop the limiting component from sliding. This limits the needle tip when the medical personnel hold the puncture needle for puncture, increasing the success rate of the puncture.

[0004] However, with the continuous intensification of my country's aging population, the National Committee on Aging predicts that the proportion of elderly people will reach 35% by 2050. In clinical practice, the number of elderly patients is constantly increasing, and the following problems exist in actual use:

[0005] 1. Elderly patients have loose skin, and it is difficult for one person to stretch the skin taut in all directions, making puncture difficult.

[0006] 2. Elderly patients often have severe "bat wings" on the inside of their elbows, making it difficult to fix blood vessels and resulting in a high failure rate for punctures. In addition, the "bat wings" are loose and form gaps with the bed surface, making it impossible to find a puncture point and increasing the difficulty of puncture.

[0007] 3. Illnesses can cause some elderly people to become agitated and uncooperative, making puncture more difficult.

[0008] 4. Chronic diseases and prolonged bed rest can lead to elbow joint contractures, making it impossible to fully straighten the elbow.

[0009] 5. The tension of elderly people during puncture causes local muscle and blood vessel contraction.

[0010] Accordingly, this application proposes a puncture and fixation device for a medium-length catheter. Summary of the Invention

[0011] The purpose of this invention is to address the shortcomings of existing technologies by proposing a puncture and fixation device for medium-length catheters.

[0012] To achieve the above objectives, the present invention adopts the following technical solution:

[0013] A puncture and fixation device for a medium-length catheter includes a support box, a scanning component, two massage components, two stretching components, and an adjustment component;

[0014] The support box is fixedly connected to a mounting base, and two mounting plates are fixedly connected to the support box. A first lead screw is rotatably connected to the inner wall of the support box. A first sliding rod is fixedly connected between the mounting plate and the support box. The support box is provided with two slide tracks. A first slide rail is fixedly connected to each side of the mounting base. A second rack is slidably connected to the first slide rail. Gears are rotatably connected between the two mounting plates and the support box. The upper inner wall of the support box is provided with two sliding grooves. A first rack is slidably connected to each of the two sliding grooves on the upper inner wall of the support box. A second slide rail is fixedly connected to the support box. A bracket is provided on the support box.

[0015] The scanning component is used to image blood vessels;

[0016] The two massage components are used to massage the arm respectively;

[0017] The two stretching components are used to fix the taut, butterfly-shaped sleeve below the inner side of the elbow of elderly patients;

[0018] The adjustment component is designed to accommodate elderly patients with elbow contractures who are unable to straighten their elbows.

[0019] Preferably, two first sleeves are fixedly connected to the bracket, and a second sleeve is provided between the two first sleeves. The second sleeve is fixedly connected to the bracket, and a fourth lead screw is threaded into the second sleeve. An arc-shaped mounting block is rotatably connected to the end of the fourth lead screw away from the second sleeve. Sliding cylinders are slidably sleeved inside the two first sleeves, and the ends of the two sliding cylinders away from the first sleeves are fixedly connected to the arc-shaped mounting block. Two L-shaped blocks are fixedly connected to the arc-shaped mounting block.

[0020] Preferably, the scanning assembly comprises two first sliders, two first electric telescopic rods, a round rod, a second slider, and a scanner. The two first sliders are slidably connected to a first lead screw and a first slide rod, respectively. The two first electric telescopic rods are fixedly installed in the two first sliders. The round rod is fixedly connected to the output end of the two first electric telescopic rods. The second slider is slidably connected to the round rod and rotatably connected to the round rod. The scanner is fixedly installed on the second slider.

[0021] Preferably, the massage assembly comprises a first slat, a second slat, a plurality of second push blocks, a plurality of first springs, and a plurality of massage rods. The first slat is fixedly connected between the support box and the mounting plate, the second slat is fixedly connected between the support box and the mounting plate, the plurality of second push blocks are respectively disposed on the second slat, the plurality of massage rods are respectively slidably connected to the first slat, the plurality of massage rods are respectively fixedly connected to the plurality of second push blocks, and the top of the plurality of massage rods is provided with a massage ball. One end of the first spring is fixedly connected to the second push block, and the other end is fixedly connected to the first slat.

[0022] Preferably, the tensioning assembly consists of a lifting seat, a wave-shaped airbag, two corrugated blocks, and several second springs. The lifting seat is slidably connected to the mounting base, the wave-shaped airbag is disposed on the lifting seat, and several second springs are respectively fixedly connected to the two L-shaped blocks, and the two corrugated blocks are respectively fixedly connected to the several second springs.

[0023] Preferably, the adjustment assembly consists of a third slider, a second electric telescopic rod, a support plate, and a fourth slider. The third slider is slidably connected to the second slide rail, the second electric telescopic rod is fixedly installed on the third slider, the fourth slider is slidably sleeved in the mounting base, the support plate is rotatably connected to the output end of the second electric telescopic rod, and the support plate is rotatably connected to the fourth slider.

[0024] Preferably, a mounting bracket is rotatably connected to the lower part of the support box, the mounting bracket is provided with a second sliding groove, a third lead screw is rotatably connected in the second sliding groove, a limit block is threadedly connected to the third lead screw, the limit block is slidably connected in the second sliding groove, a display bracket is rotatably connected to the support box, a third sliding groove is provided below the support box, and the display bracket is located in the third sliding groove.

[0025] Preferably, the gears are meshed with the first rack and the second rack respectively, two second lead screws are rotatably connected inside the support box, the two first racks are threaded onto the two second lead screws respectively, a knob is fixedly connected to one end of each of the two second lead screws, and two rubber ropes are fixedly connected to both ends of the mounting base respectively.

[0026] Preferably, a worm gear is fixedly connected to one end of the first lead screw, a worm is rotatably connected to the inner wall of the support box, the worm and the worm gear are meshed and connected, a handle is fixedly connected to one end of the worm, a first push block is fixedly connected to the first slider, and a limit ring is rotatably connected to the support box.

[0027] Preferably, the support box has two grooves, a bidirectional lead screw is rotatably connected in the grooves of the support box, a second slide rod is fixedly connected in the grooves of the support box, two brackets are slidably connected on the bidirectional lead screw and the second slide rod, and the two brackets are slidably connected in the two grooves on the support box. Each of the two brackets is provided with two third electric telescopic rods, one of which is fixedly connected to the bracket and the other is fixedly connected to the bottom of the arc-shaped mounting block. A corrugated pressure block is fixedly connected to the bottom of each of the two third electric telescopic rods, and two Velcro straps are provided on the tray.

[0028] The present invention has the following beneficial effects:

[0029] 1. Using the stretching assembly, after the patient places their arm on the mounting base, two third electric telescopic rods lower two corrugated pressure blocks to press the arm down. Then, turning the bidirectional screw moves the two corrugated pressure blocks away from each other, thus stretching the skin. Turning two knobs rotates two second screws, which in turn drive the gears on the first racks. At this time, the gears, under the action of the first racks, drive the second racks and the lifting seat to slide upward, so that the corrugated airbag lifts the butterfly sleeve. Then, turning the second sleeve moves the fourth screw to lower the arc-shaped mounting block and the corrugated block. Under the action of the second spring, the corrugated block is tightly attached to the patient's arm. As it descends, it pulls down the patient's wrinkled skin, thus finding a reliable point of force for puncture and significantly improving the success rate of puncture.

[0030] 2. By adjusting the components, the second electric telescopic rod is pulled to slide within the second slide rail according to the length of the patient's arm, thereby adjusting the distance between the patient's forearm and upper arm. Then, according to the degree to which the elderly patient's arm can bend, the second electric telescopic rod is used to raise and lower the support plate, thereby completing the angle adjustment, so that elderly patients whose arms cannot be straight can easily place their hands on it. Finally, the Velcro is used to fix the patient's arm in place.

[0031] 3. By turning the handle through the scanning component, the worm gear can be rotated, which in turn drives the first lead screw to rotate. This causes the first slider to drive the scanner to scan and detect the patient's arm. Subsequently, the height of the scanner can be adjusted by the first electric telescopic rod driving the round rod, and the angle and lateral position of the scanner can be adjusted by pushing the second slider. In this way, before puncture, the depth, diameter, thickness, direction, and relationship with the surrounding tissues of the blood vessels can be carefully observed, thereby quickly locating the puncture point. The angle can also be adjusted according to the degree of bending of the patient's arm.

[0032] 4. Through the massage component, as the first slider slides on the first lead screw, the inclined surface of the first push block contacts and pushes several inclined surfaces of the second push blocks in sequence. This causes the second push blocks to push the massage rod and compress the first spring. The massage balls on the massage rod massage and relax the patient's arm upwards. After the first push block leaves, the massage rod returns to its original position under the action of the first spring. Then, the first push block repeats the above operation with the sliding of the first slider to the next second push block, so that the patient's entire arm is massaged and relaxed, relieving the muscle tension caused by the patient's tension, further reducing the degree of vasoconstriction, and creating more favorable conditions for subsequent accurate puncture. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a puncture and fixation device for a medium-length catheter proposed in this invention.

[0034] Figure 2 This is a schematic diagram of the connection structure of the first slider, support plate, and first electric telescopic rod of the puncture and fixation device for a medium-length catheter proposed in this invention.

[0035] Figure 3 This is a transverse internal sectional view of a puncture and fixation device for a medium-length catheter proposed in this invention.

[0036] Figure 4 for Figure 3 Enlarged diagram of point A in the diagram;

[0037] Figure 5 for Figure 4 Enlarged diagram of point B in the diagram;

[0038] Figure 6 This is a schematic diagram of the connection structure of the adjustment assembly, mounting base, and second rack of the puncture and fixation device for a medium-length catheter proposed in this invention.

[0039] Figure 7 This is a longitudinal internal sectional view of a puncture and fixation device for a medium-length catheter proposed in this invention.

[0040] Figure 8 This is a schematic diagram of the connection structure of the massage component of the puncture and fixation device for a medium-length catheter proposed in this invention.

[0041] Figure 9 This is a schematic diagram of the connection structure of the lower components of a puncture and fixation device for a medium-length catheter proposed in this invention.

[0042] Figure 10 This is a schematic diagram of the connection structure of a puncture and fixation device for a medium-length catheter proposed in this invention.

[0043] Figure 11This is a schematic diagram of the connection structure of the puncture and fixation device for a medium-length catheter proposed in this invention, including the support, the first sleeve, and the fourth lead screw.

[0044] In the diagram: 1. Support box; 2. Mounting bracket; 3. Limiting block; 4. Support plate; 5. First slider; 6. Round rod; 7. First electric telescopic rod; 8. Second slider; 9. Scanner; 10. Bracket; 11. First lead screw; 12. First slide rod; 13. Slide rail; 14. Display bracket; 15. Second electric telescopic rod; 16. Arc-shaped mounting block; 17. First sleeve; 18. Second slide groove; 19. First spring; 20. Rubber rope; 21. Velcro; 22. Third lead screw; 23. Massage rod; 24. First rack; 25. Gear; 26. Corrugated arc block; 27. Mounting base; 2 8 Lifting seat, 29 Wave-shaped airbag, 30 Worm gear, 31 Worm, 32 Second rack, 33 First slide rail, 34 Fourth slider, 35 Third slider, 36 Second slide rail, 37 Second push block, 38 First push block, 39 Third slide groove, 40 Second slat, 41 First slat, 42 Second lead screw, 43 Mounting plate, 44 Fourth lead screw, 45 Slide cylinder, 46 Second sleeve, 47 Limiting ring, 48 Second slide rod, 49 Bidirectional lead screw, 50 L-shaped block, 51 Wave-shaped pressure block, 52 Second spring, 53 Third electric telescopic rod. Detailed Implementation

[0045] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1:

[0046] Reference Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 9 , Figure 10 as well as Figure 11 A puncture and fixation device for a medium-length catheter includes a support box 1, a scanning component, two massage components, two stretching components, and an adjustment component;

[0047] A mounting bracket 2 is rotatably connected to the bottom of the support box 1. The mounting bracket 2 allows the support box 1 to rotate and adjust its position flexibly. The mounting bracket 2 has a second sliding groove 18, in which a third lead screw 22 is rotatably connected. When the third lead screw 22 is rotated, the limiting block 3, which is threaded to it and slides within the second sliding groove 18, will move accordingly, thereby performing limit adjustment. The display bracket 14, rotatably connected to the support box 1, can be used to place display devices such as tablets and small monitors, making it convenient for medical personnel to clearly observe the depth, diameter, direction, and internal blood flow of blood vessels detected by the scanner 9. It is located in the third sliding groove 39 below the support box 1 and is in a retracted state. A limiting ring 47 is rotatably connected to the support box 1. The display bracket 14 has an annular sliding groove. When using this device, the limiting ring 47 can be fitted into the annular sliding groove on the display bracket 14 to fix the display bracket 14. The mounting base 27 inside the support box 1 serves to support the arm. The first slide rails 33 on both sides allow the second rack 32 to slide smoothly. The gear 25, which is rotatably connected between the mounting plate 43 and the support box 1, cooperates with the first rack 24 and the second rack 32 to realize the transmission of force and the linkage of components. Two second lead screws 42 are rotatably connected inside the support box 1. The two first racks 24 are respectively threaded onto the two second lead screws 42. A knob is fixedly connected to one end of each of the two second lead screws 42. The gear 25 is meshed with the first rack 24 and the second rack 32 respectively. When the second lead screw 42 is rotated by turning the knob, the first rack 24 can slide laterally, thereby rotating the gear 25 and driving the second rack 32 to slide up and down. The support box 1 is provided with two brackets 10. The two first sleeves 17 on the brackets 10 cooperate with the second sleeves 46 to jointly support and adjust the arc-shaped mounting block 16. The second sleeve 46 is internally threaded to the fourth lead screw 44. Rotating the second sleeve 46 controls the raising and lowering of the arc-shaped mounting block 16. The support box 1 has two grooves, and a bidirectional lead screw 49 is rotatably connected to the grooves of the support box 1. A second slide rod 48 is fixedly connected to the grooves of the support box 1. The two brackets 10 are slidably connected to the bidirectional lead screw 49 and the second slide rod 48. The brackets 10 are slidably connected to the two grooves on the support box 1. By turning the bidirectional lead screw 49, the two brackets 10 can be controlled to move closer or further apart. Each of the two brackets 10 is equipped with two third electric telescopic rods 53. One telescopic rod 53 is fixedly connected to the bracket 10, and the other is fixedly connected to the lower part of the arc-shaped mounting block 16. Waveform pressure blocks 51 are fixedly connected to the lower parts of the two third electric telescopic rods 53 respectively. The third electric telescopic rods 53 drive the waveform pressure blocks 51 to press down on the arm. The waveform pressure blocks 51 are made of skin-friendly silicone material. When fixing the arm, they can provide sufficient pressure without damaging the patient's skin. Then, the bidirectional screw 49 is turned to move the two brackets 10 away from each other, so that the waveform pressure blocks 51 can stretch the skin, which can effectively stretch any loose parts on the arm skin and reduce skin wrinkles.

[0048] The scanning component is used to image blood vessels;

[0049] Two massage components are used to massage the arm;

[0050] Two tensioning components are used to secure the "bat wings" below the inner elbow of elderly patients who are experiencing tightness.

[0051] The adjustment component is designed to fit elderly patients with elbow contractures who are unable to straighten their elbows.

[0052] The stretching assembly consists of a lifting seat 28, a wave-shaped airbag 29, two corrugated blocks 26, and several second springs 52. The lifting seat 28 is slidably connected to the mounting base 27. The wave-shaped airbag 29 can support the "bat wings" of the elderly patient's elbow. As the first rack 24 moves, it can drive the gear 25 to rotate, causing the second rack 32 to slide, thereby raising the mounting base 27. Several second springs 52 are respectively fixedly connected to two L-shaped blocks 50, and two corrugated blocks 26 are respectively fixedly connected to several second springs 52. Through the rebound force of the second springs 52, the corrugated blocks 26 can be tightly attached to both sides of the patient's arm.

[0053] In this embodiment, the display bracket 14 is first rotated 180 degrees, then the limiting ring 47 is fitted into the annular groove on the display bracket 14 to fix the display bracket 14. The mounting bracket 2 is then attached to the underside of the bed. Next, the third screw 22 is turned to slide the limiting block 3, thereby clamping the bed edge with the mounting bracket 2. The support box 1 is then rotated onto the hospital bed. When the patient places their arm on the mounting seat, the two third electric telescopic rods 53 lower the two corrugated pressure blocks 51 to press the arm down. Then, the bidirectional screw 49 is turned to move the two corrugated pressure blocks 51 away from each other, thereby stretching the skin and effectively relieving any looseness in the arm skin. To reduce skin folds, two knobs are turned to rotate two second screws 42, which in turn drive two first racks 24 to rotate gears 25. At this time, gears 25, under the action of the first racks 24, drive the second racks 32 and the lifting seat 28 to slide upward, so that the wave-shaped airbag 29 lifts the butterfly sleeve. Then, turning the second sleeve 46 causes the fourth screw 44 to drive the arc-shaped mounting block 16 and the corrugated arc block 26 to descend. Under the action of the second spring 52, the corrugated arc block 26 is tightly attached to the patient's arm. While descending, it pulls the patient's folded skin downward and flattens it. This provides a reliable point of force for puncture and significantly improves the success rate of puncture. Example 2:

[0054] Unlike Example 1, referring to Figure 1 - Figure 3 , Figure 5 - Figure 7 as well as Figure 10 This embodiment also has the following further features:

[0055] The two rubber ropes 20 connected to both ends of the mounting base 27 can tighten and limit the arm placed on the mounting base and expose blood vessels. The first lead screw 11 rotating inside the support box 1 provides a stable linear driving force when moving the connected components. The worm gear 30 connected to one end of the first lead screw 11 meshes with the worm 31 rotating inside the support box 1. Medical personnel can rotate the handle at one end of the worm 31 to drive the first lead screw 11 to rotate through the transmission of the worm gear, thereby achieving precise adjustment. The two slide rails 13 on the support box 1 ensure the stability of the component movement, and the second slide rail 36 is fixed inside the support box 1.

[0056] The adjustment assembly consists of a third slider 35, a second electric telescopic rod 15, a support plate 15, and a fourth slider 34. The third slider 35 slides on the second slide rail 36 and can adjust its position according to the length of the patient's arm. The second electric telescopic rod 15, which is fixed on the third slider 35, can extend and retract, driving the support plate 4, which is rotatably connected to it, to adjust its angle to accommodate the degree of arm flexion of elderly patients. The fourth slider 34 is slidably sleeved in the mounting base 27 and rotatably connected to the support plate 4, assisting the support plate 4 in stabilizing its movement and adjusting its angle. The support plate 4 is provided with two Velcro straps 21, which are used to fix the patient's forearm by attaching the two Velcro straps 21 together.

[0057] The scanning assembly consists of two first sliders 5, two first electrically operated telescopic rods 7, a round rod 6, a second slider 8, and a scanner 9. The scanner 9 is a portable ultrasound scanner capable of detecting the depth, diameter, direction, and internal blood flow of blood vessels, providing crucial information for puncture point location. The two first sliders 5 slide on the first lead screw 11 and the first slide bar 12, respectively. Through their cooperation, the scanner 9 can move along the patient's arm. The two first electrically operated telescopic rods 7 are installed within the first sliders 5, allowing for flexible adjustment of the scanner 9's height. The round rod 6 connects to the output ends of the two first electrically operated telescopic rods 7, providing support for the sliding and rotation of the second slider 8. The second slider 8 can slide and rotate on the round rod 6, thereby adjusting the angle and lateral position of the scanner 9, ensuring that the scanner 9 can perform comprehensive scanning of different positions on the patient's arm, facilitating clear observation of vascular conditions by medical personnel.

[0058] In this embodiment, the second electric telescopic rod 15 is pulled and slid within the second slide rail 36 according to the length of the patient's arm, thereby adjusting the distance between the patient's forearm and upper arm. Then, according to the degree to which the elderly patient's arm can bend, the angle of the support plate 4 is adjusted by the second electric telescopic rod 15, so that elderly patients whose arms cannot be straight can easily place their hands on it. Finally, the arm is tied tightly with a rubber rope 20, and the forearm is fixed with Velcro 21, effectively preventing the arm from moving during the puncture process, ensuring the accuracy and safety of the puncture. Turning the handle can drive the worm gear 31 to rotate, thereby causing the worm wheel 30 to drive the first lead screw 11 to rotate, thereby causing the first slider 5 to drive the scanner 9 to scan and detect the patient's arm. Then, the height of the scanner can be adjusted by the first electric telescopic rod 7 driving the round rod 6, and the angle and lateral position of the scanner 9 can be adjusted by pushing the second slider 8. In this way, before the puncture, the depth, diameter, thickness, direction, and relationship with the surrounding tissues of the blood vessels can be carefully observed, thereby quickly locating the puncture point, and the angle can be adjusted according to the degree of bending of the patient's arm. Example 3:

[0059] Reference Figure 3 , Figure 7 as well as Figure 8 Compared to Embodiment 1 and Embodiment 2, in this embodiment:

[0060] The massage assembly consists of a first slat 41, a second slat 40, several second push blocks 37, several first springs 19, and several massage rods 23. The first slat 41 is fixedly connected between the support box 1 and the mounting plate 43, providing stable support and a track for the sliding of the massage rods 23. The corresponding second strip 40 is also fixed between the support box 1 and the mounting plate 43, providing a mounting point for the second push block 37. The second push blocks 37 are distributed on the second strip 40, and each second push block 37 is connected to a massage rod 23, which is responsible for pushing the massage rod 23 to move. The massage rod 23 slides on the first strip 41, and the massage ball at its top directly contacts the patient's arm to realize the massage action. One end of the first spring 19 is connected to the second push block 37, and the other end is connected to the first strip 41. During the massage, the first spring 19 can be compressed when force is applied, so that the massage rod 23 can move up and down, and can also help the massage rod 23 return to its original position after the force is removed, so as to ensure the continuous massage action. The first push block 38 fixed on the first slider 5 will contact the inclined surface of the second push block 37 in turn during the movement of the first slider 5. When the two come into contact, the first push block 38 pushes the second push block 37, causing the massage rod 23 to move upward, and the massage ball massages the patient's arm; when the first push block 38 leaves the second push block 37, the first spring pushes the massage rod 23 to return to its original position, and then the first push block 38 continues to move, repeating the above action with the next second push block 37, to achieve a cyclical massage of the patient's entire arm.

[0061] It should be noted that the massage component needs to be used before the stretching component is used to avoid the arc mounting block 16 limiting the massage rod 23, preventing the massage rod 23 from directly acting on the patient's arm.

[0062] In this embodiment, while the first slider 5 slides on the first lead screw 11, the inclined surface of the first push block 38 contacts and pushes the inclined surfaces of several second push blocks 37 in sequence, thereby causing the second push blocks 37 to push the massage rod 23 and compress the first spring 19. The massage ball on the massage rod 23 massages and relaxes the patient's arm upwards. After the first push block 38 leaves, the massage rod 23 returns to its original position under the action of the first spring 19. Then, the first push block 38 repeats the above operation on the next second push block 37 as the first slider 5 slides, so that the patient's entire arm is massaged and relaxed, relieving the muscle tension caused by the patient's tension, further reducing the degree of vasoconstriction, and creating more favorable conditions for subsequent accurate puncture.

[0063] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A puncture and fixation device for a medium-length catheter, characterized in that, Includes a support box (1), a scanning component, two massage components, two stretching components, and an adjustment component; The support box (1) is fixedly connected to a mounting base (27), and two mounting plates (43) are fixedly connected to the support box (1). A first lead screw (11) is rotatably connected to the inner wall of the support box (1). A first slide rod (12) is fixedly connected between the mounting plate (43) and the support box (1). The support box (1) is provided with two slide rails (13). A first slide rail (33) is fixedly connected to both sides of the mounting base (27). A second rack (32) is slidably connected to the first slide rail (33). Gears (25) are rotatably connected between the two mounting plates (43) and the support box (1). The upper inner wall of the support box (1) is provided with two slide grooves. A first rack (24) is slidably connected to the two slide grooves on the upper inner wall of the support box (1). A second slide rail (36) is fixedly connected to the support box (1). The support box (1) is provided with two brackets (10). The scanning component is used to image blood vessels; The two massage components are used to massage the arm respectively; The two stretching components are used to fix the taut, butterfly-shaped sleeve below the inner side of the elbow of elderly patients; The adjustment component is designed to accommodate elderly patients with elbow contracture who are unable to straighten their elbows. The scanning assembly consists of two first sliders (5), two first electric telescopic rods (7), a round rod (6), a second slider (8), and a scanner (9). The two first sliders (5) are slidably connected to the first lead screw (11) and the first slide rod (12), respectively. The massage assembly consists of a first strip (41), a second strip (40), several second push blocks (37), several first springs (19), and several massage rods (23). Several massage rods (23) are fixedly connected to several second push blocks (37), and massage balls are provided at the top of several massage rods (23). A first push block (38) is fixedly connected to the first slider (5); As the first slider (5) slides on the first lead screw (11), the inclined surface of the first push block (38) contacts and pushes the inclined surfaces of several second push blocks (37) in sequence.

2. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that, Two first sleeves (17) are fixedly connected to the bracket (10). A second sleeve (46) is provided between the two first sleeves (17). The second sleeve (46) is fixedly connected to the bracket (10). A fourth lead screw (44) is threaded into the second sleeve (46). An arc-shaped mounting block (16) is rotatably connected to the end of the fourth lead screw (44) away from the second sleeve (46). Sliding cylinders (45) are slidably sleeved in the two first sleeves (17). The ends of the two sliding cylinders (45) away from the first sleeves (17) are fixedly connected to the arc-shaped mounting block (16). Two L-shaped blocks (50) are fixedly connected to the arc-shaped mounting block (16).

3. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that, Two first electric telescopic rods (7) are fixedly installed in two first sliders (5), the round rod (6) is fixedly connected to the output end of the two first electric telescopic rods (7), the second slider (8) is slidably connected to the round rod (6), the second slider (8) is rotatably connected to the round rod (6), and the scanner (9) is fixedly installed on the second slider (8).

4. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that, The first strip (41) is fixedly connected between the support box (1) and the mounting plate (43), the second strip (40) is fixedly connected between the support box (1) and the mounting plate (43), a plurality of second push blocks (37) are respectively disposed on the second strip (40), a plurality of massage rods (23) are respectively slidably connected to the first strip (41), one end of the first spring (19) is fixedly connected to the second push block (37), and the other end is fixedly connected to the first strip (41).

5. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that, The tensioning assembly consists of a lifting seat (28), a wave-shaped airbag (29), two corrugated blocks (26), and several second springs (52). The lifting seat (28) is slidably connected to the mounting seat (27). The wave-shaped airbag (29) is located on the lifting seat (28). Several second springs (52) are fixedly connected to two L-shaped blocks (50), and the two corrugated blocks (26) are fixedly connected to several second springs (52).

6. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that, The adjustment assembly consists of a third slider (35), a second electric telescopic rod (15), a support plate (4), and a fourth slider (34). The third slider (35) is slidably connected to the second slide rail (36), the second electric telescopic rod (15) is fixedly installed on the third slider (35), the fourth slider (34) is slidably sleeved in the mounting base (27), the support plate (4) is rotatably connected to the output end of the second electric telescopic rod (15), and the support plate (4) is rotatably connected to the fourth slider (34).

7. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that, The support box (1) is rotatably connected to a mounting bracket (2), the mounting bracket (2) is provided with a second slide groove (18), a third lead screw (22) is rotatably connected in the second slide groove (18), a limit block (3) is threadedly connected on the third lead screw (22), the limit block (3) is slidably connected in the second slide groove (18), the support box (1) is rotatably connected to a display bracket (14), the support box (1) is provided with a third slide groove (39) below the support box (1), and the display bracket (14) is located in the third slide groove (39).

8. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that, The gear (25) is meshed with the first rack (24) and the second rack (32) respectively. Two second lead screws (42) are rotatably connected inside the support box (1). The two first racks (24) are threaded onto the two second lead screws (42) respectively. A knob is fixedly connected to one end of each of the two second lead screws (42). Two rubber ropes (20) are fixedly connected to both ends of the mounting base (27).

9. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that, The first lead screw (11) is fixedly connected to a worm wheel (30) at one end, and a worm (31) is rotatably connected to the inner wall of the support box (1). The worm (31) is meshed with the worm wheel (30), and a handle is fixedly connected to one end of the worm (31). A limit ring (47) is rotatably connected to the support box (1).

10. The puncture and fixation device for a medium-length catheter according to claim 6, characterized in that, The support box (1) has two grooves. A bidirectional lead screw (49) is rotatably connected in the groove of the support box (1). A second slide rod (48) is fixedly connected in the groove of the support box (1). Two brackets (10) are slidably connected to the bidirectional lead screw (49) and the second slide rod (48). Two brackets (10) are slidably connected in the two grooves on the support box (1). Two third electric telescopic rods (53) are provided on the two brackets (10). One of the two third electric telescopic rods (53) is fixedly connected to the bracket (10), and the other is fixedly connected to the bottom of the arc-shaped mounting block (16). A wave-shaped pressure block (51) is fixedly connected to the bottom of the two third electric telescopic rods (53). Two Velcro strips (21) are provided on the tray (4).

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