Puncture fixing device for medium-length catheter

Abstract

The invention discloses a puncture fixing device for a medium-length catheter, the puncture fixing device comprises a supporting box, a scanning assembly, two massage assemblies, two stretching assemblies and an adjusting assembly, a mounting seat is fixedly connected in the supporting box, and two mounting plates are fixedly connected in the supporting box. Two second lead screws are rotated by screwing two rotary knobs, so that two first racks respectively drive gears to rotate, at the moment, the gears drive second racks and a lifting seat to slide upwards under the action of the first racks, and a waveform air bag supports a butterfly sleeve; then a second sleeve is screwed to enable a fourth lead screw to drive an arc-shaped mounting block and a corrugated arc block to descend, under the action of a second spring, the corrugated arc block is tightly attached to the arm of the patient, the corrugated skin of the patient is downwards leveled while descending, a reliable acting point is found for puncture, and the success rate of puncture is remarkably increased.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a puncture and fixation device for a medium-length catheter. Background Art

[0002] As an important medical nursing operation, venipuncture aims to ensure timely treatment for critically ill elderly patients and patients with chronic diseases, reduce the pain caused by repeated punctures, reduce medical costs, and ensure the treatment effect and safety of patients.

[0003] Patent publication number "CN221535360U" discloses a puncture guide for a medium-length catheter. Through the setting of a limit assembly, when using the puncture device, the medical staff loosens the bolts that fix the sliding plate and the fixing ring, and then rotates the limit cylinder to make the sliding plate slide on the top of the fixing ring, and at the same time, the rotating wheel rotates inside the arc groove. When the limit cylinder is in a suitable position, the medical staff tightens the bolt again to stop the limit assembly from sliding. Although the medical staff can limit the needle tip when holding the puncture needle for puncture, the success rate of puncture is increased.

[0004] However, as the aging population in my country continues to intensify, the National Committee on Aging predicts that the proportion of elderly people will reach 35% by 2050. The number of elderly patients in clinical practice continues to increase. In actual use, the following problems exist in clinical practice: 1. The skin of elderly patients is loose, and the operator cannot tighten the skin up and down or left and right, making it difficult to puncture.

[0005] 2. The elderly have severe butterfly sleeves on the inner side of the elbows, which makes it difficult to fix the blood vessels and result in a high puncture failure rate. In addition, the butterfly sleeves are loose, forming a gap with the bed surface, making it impossible to find the puncture point, increasing the difficulty of puncture.

[0006] 3. Diseases cause some elderly people to become agitated and difficult to cooperate, which increases the difficulty of puncture.

[0007] 4. Chronic diseases and long-term bed rest can cause elbow contracture, which makes it impossible to fully straighten the elbow.

[0008] 5. During puncture, the tension of the elderly causes local muscle and blood vessel contraction.

[0009] Based on this, the present application proposes a puncture and fixation device for a medium-length catheter. Summary of the invention

[0010] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a puncture and fixation device for a medium-length catheter.

[0011] In order to achieve the above object, the present invention adopts the following technical solutions: A puncture fixation device for a medium-length catheter comprises a support box, a scanning component, two massage components, two stretching components and an adjustment component; The support box is fixedly connected with a mounting seat, two mounting plates are fixedly connected with the support box, the inner wall of the support box is rotatably connected with a first screw rod, the mounting plate is fixedly connected with the support box, and two slideways are provided on the support box, and the first slide rails are fixedly connected to the two sides of the mounting seat, and the second rack is slidably connected to the first slide rails, and the two mounting plates and the support box are rotatably connected with gears, respectively. Two slide grooves are provided on the inner wall above the support box, and the first racks are slidably connected to the two slide grooves on the inner wall above the support box, respectively, the second slide rails are fixedly connected in the support box, and a bracket is provided on the support box; The scanning assembly is used to image blood vessels; The two massage components are respectively used to massage the arms; The two stretching components are respectively used to fix and tighten the butterfly sleeves below the inner side of the elbows of elderly patients; The adjustment component is used to adapt to elderly patients who have elbow contracture and cannot straighten their elbows.

[0012] Preferably, two first sleeves are fixedly connected to the bracket, a second sleeve is provided between the two first sleeves, the second sleeve is fixedly connected to the bracket, a fourth screw rod is threadedly connected to the inner thread of the second sleeve, the fourth screw rod is rotatably connected to an arc-shaped mounting block at one end away from the second sleeve, slides are slidably sleeved in the two first sleeves respectively, and the two slides are fixedly connected to the arc-shaped mounting blocks at one end away from the first sleeves, and two L-shaped blocks are fixedly connected to the arc-shaped mounting block.

[0013] Preferably, the scanning assembly consists of two first sliders, two first electric telescopic rods, a round rod, a second slider and a scanner, the two first sliders are respectively slidably connected to the first screw rod and the first sliding rod, the two first electric telescopic rods are respectively fixedly installed in the two first sliders, the round rod is fixedly connected to the output ends of the two first electric telescopic rods, the second slider is slidably connected to the round rod, the second slider is rotatably connected to the round rod, and the scanner is fixedly installed on the second slider.

[0014] Preferably, the massage assembly consists of 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 a support box and a mounting plate, the second slat is fixedly connected between a support box and a mounting plate, a plurality of second push blocks are respectively arranged on the second slats, a plurality of massage rods are respectively slidably connected to the first slats, a plurality of massage rods are respectively fixedly connected to a plurality of second push blocks, a plurality of massage rods are provided with massage balls at the top ends, 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.

[0015] Preferably, the stretching assembly consists of a lifting seat, a corrugated airbag, two corrugated arc blocks and a plurality of second springs. The lifting seat is slidably connected to the mounting seat, the corrugated airbag is arranged on the lifting seat, a plurality of the second springs are respectively fixedly connected to the two L-shaped blocks, and the two corrugated arc blocks are respectively fixedly connected to the plurality of second springs.

[0016] 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 mounted on the third slider, the fourth slider is slidably sleeved in the mounting seat, 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.

[0017] Preferably, a mounting bracket is rotatably connected to the lower part of the support box, a second slide groove is provided on the mounting bracket, a third screw rod is rotatably connected in the second slide groove, a limiting block is threadedly connected on the third screw rod, the limiting block is slidably connected in the second slide groove, a display bracket is rotatably connected to the support box, a third slide groove is provided under the support box, and the display bracket is arranged in the third slide groove.

[0018] Preferably, the gear is meshed with the first rack and the second rack respectively, two second screw rods are rotatably connected in the support box, the two first racks are threadedly connected to the two second screw rods respectively, one end of the two second screw rods is fixedly connected with a knob respectively, and two rubber ropes are fixedly connected at both ends of the mounting seat respectively.

[0019] Preferably, one end of the first screw is fixedly connected to a worm wheel, the inner wall of the support box is rotatably connected to a worm, one end of the first screw is fixedly connected to a worm wheel, the inner wall of the support box is rotatably connected to a worm, the worm is meshingly connected to the worm wheel, one end of the worm is fixedly connected to a handle, the first sliding block is fixedly connected to a first push block, and the support box is rotatably connected to a limiting ring.

[0020] Preferably, the support box is provided with two grooves, a bidirectional screw rod is rotatably connected in the groove of the support box, a second sliding rod is fixedly connected in the groove of the support box, the two brackets are slidably connected to the bidirectional screw rod and the second sliding rod, the two brackets are slidably connected in the two grooves on the support box, two third electric telescopic rods are respectively provided on the two brackets, one of the two third electric telescopic rods is respectively fixedly connected to the bracket, and the other is fixedly connected under the arc-shaped mounting block, corrugated pressure blocks are respectively fixedly connected under the two third electric telescopic rods, and two Velcros are provided on the support plate.

[0021] The present invention has the following beneficial effects: 1. Through the stretching component, when the patient places his arm on the mounting seat, the two third electric telescopic rods are used to respectively lower the two corrugated pressure blocks to press the arm, and then the two-way screw is turned to make the two corrugated pressure blocks move away from each other, thereby stretching the skin, and the two second screws are rotated by turning the two knobs, so that the two first racks drive the gears to rotate respectively. At this time, the gear drives the second rack and the lifting seat to slide upward under the action of the first rack, so that the corrugated airbag lifts the butterfly sleeve, and then the second sleeve is turned to make the fourth screw drive the arc-shaped mounting block and the corrugated arc block to lower. Under the action of the second spring, the corrugated arc block is tightly attached to the patient's arm, and the patient's wrinkled skin is pulled down while descending, so that a reliable fulcrum can be found for puncture, which significantly improves the success rate of puncture.

[0022] 2. Through the adjustment component, according to the length of the patient's arm, pull the second electric telescopic rod to slide in the second slide rail, so as to adjust 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, so as to complete the angle adjustment, so that elderly patients who cannot straighten their arms can easily put their hands on it, and finally the Velcro can be used to fix the patient's arm.

[0023] 3. Through the scanning component, turning the handle can drive the worm to rotate, so that the worm wheel drives the first screw to rotate, so that the first slider drives the scanner to scan and detect the patient's arm. Then, the height of the scanner can be adjusted by driving the round rod through the first electric telescopic 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 of the blood vessel and the relationship with the surrounding tissue can be carefully observed, so as to quickly lock the puncture point, and the angle can be adjusted according to the degree of bending of the patient's arm.

[0024] 4. Through the massage component, when the first slider slides on the first screw rod, the inclined surface of the first push block contacts and pushes the inclined surfaces of several second push blocks in sequence, so that the second push block pushes the massage rod and compresses the first spring, and the massage ball on the massage rod massages and relaxes the patient's arm upward. Then, when the first push block leaves, the massage rod returns to its original position under the action of the first spring, and then the first push block repeats the above operation on the next second push block as the first slider slides, so that the patient's entire arm can be massaged and relaxed, relieving the patient's muscle tension caused by tension, further reducing the degree of vascular contraction, and creating more favorable conditions for subsequent precise puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a puncture and fixation device for a medium-length catheter proposed by the present invention; Figure 2 This is a schematic diagram of the connection structure of the first slider, the support plate, the first electric telescopic rod and other components of the puncture and fixation device for a medium-length catheter proposed by the present invention; Figure 3 A transverse internal cross-sectional view of a puncture fixation device for a medium-length catheter proposed by the present invention; Figure 4 for Figure 3 A is an enlarged schematic diagram; Figure 5 for Figure 4 The enlarged schematic diagram of point B in FIG. Figure 6 This is a schematic diagram of the connection structure of the adjusting assembly, the mounting seat, the second rack and other components of the puncture fixing device of a medium-length catheter proposed by the present invention; Figure 7 A longitudinal internal cross-sectional view of a puncture fixation device for a medium-length catheter proposed by the present invention; Figure 8 A schematic diagram of the connection structure of a massage assembly of a puncture fixation device for a medium-length catheter proposed by the present invention; Fig. 9 A schematic diagram of the connection structure of the lower parts of a puncture fixation device for a medium-length catheter proposed by the present invention; Fig.10 A schematic diagram of the connection structure of a puncture fixation device for a medium-length catheter proposed by the present invention; Fig.11 This is a schematic diagram of the connection structure of components such as a bracket, a first sleeve, and a fourth screw rod of a puncture fixation device for a medium-length catheter proposed by the present invention.

[0026] In the figure: 1 support box, 2 mounting bracket, 3 limit block, 4 support plate, 5 first slider, 6 round rod, 7 first electric telescopic rod, 8 second slider, 9 scanner, 10 bracket, 11 first screw rod, 12 first slide rod, 13 slideway, 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 screw rod, 23 massage rod, 24 first rack, 25 gear, 26 corrugated arc block, 27 mounting seat, 2 8 lifting seat, 29 corrugated airbag, 30 worm wheel, 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 screw rod, 43 mounting plate, 44 fourth screw rod, 45 slide cylinder, 46 second sleeve, 47 limiting ring, 48 second slide rod, 49 bidirectional screw rod, 50 L-shaped block, 51 corrugated pressure block, 52 second spring, 53 third electric telescopic rod. DETAILED DESCRIPTION

[0027] 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. Embodiment 1:

[0028] Reference Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Fig. 9 , Fig.10 as well as Fig.11 , a puncture fixation device for a medium-length catheter, comprising a support box 1, a scanning component, two massage components, two stretching components and an adjustment component; The mounting bracket 2 is rotatably connected to the bottom of the support box 1, and the mounting bracket 2 allows the support box 1 to flexibly rotate and adjust its position. There is a second slide groove 18 on the mounting bracket 2, and the third screw rod 22 is rotatably connected to the second slide groove 18. When the third screw rod 22 is rotated, the limit block 3 threadedly connected to it and sliding in the second slide groove 18 will move accordingly, so as to perform limit adjustment. The display bracket 14 rotatably connected to the support box 1 can be used to place display devices such as flat panels and small displays, so that medical staff can clearly observe the depth, diameter, direction and internal blood flow of the blood vessels detected by the scanner 9. It is located in the third slide groove 39 below the support box 1 and is in a storage state. The support box 1 is rotatably connected to the limit ring 47, and the display bracket 14 is provided with an annular slide groove. When using this device, the limit ring 47 can be sleeved in the annular slide groove on the display bracket 14 to fix the display bracket 14. The mounting seat 27 in the support box 1 plays the role of supporting the arm, and the first slide rails 33 on both sides thereof can allow the second rack 32 to slide smoothly. The gear 25 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 force transmission and linkage of components. Two second screw rods 42 are rotatably connected in the support box 1, and the two first racks 24 are respectively threadedly connected to the two second screw rods 42, and one end of the two second screw rods 42 is respectively fixedly connected with a knob, and the gear 25 is respectively meshed with the first rack 24 and the second rack 32. When the second screw rod 42 is rotated by turning the knob, the first rack 24 can slide horizontally, thereby rotating the gear 25 and driving the second rack 32 to slide up and down. Two brackets 10 are provided on the support box 1, and the two first sleeves 17 on the bracket 10 cooperate with the second sleeve 46 to jointly support and adjust the arc-shaped mounting block 16. The second sleeve 46 is internally threadedly connected to the fourth screw rod 44. By rotating the second sleeve 46, the arc-shaped mounting block 16 can be controlled to rise and fall. Two grooves are provided on the support box 1. A bidirectional screw rod 49 is rotatably connected in the groove of the support box 1. A second slide bar 48 is fixedly connected in the groove of the support box 1. The two brackets 10 are slidably connected to the bidirectional screw rod 49 and the second slide bar 48. The brackets 10 are slidably connected in the two grooves on the support box 1. By twisting the bidirectional screw rod 49, the two brackets 10 can be controlled to move closer or farther from each other. Two third electric telescopic rods 53 are respectively provided on the two brackets 10. The two third electric telescopic rods 53 are connected to the second slide bar 48. One of the retractable 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. The two third electric telescopic rods 53 are respectively fixedly connected with corrugated pressure blocks 51 below. The corrugated pressure blocks 51 are driven by the third electric telescopic rods 53 to press down the arm. The corrugated pressure blocks 51 are made of skin-friendly silicone material. When fixing the arm, they can provide sufficient pressure without causing damage to the patient's skin. Then, the two-way screw rod 49 is twisted to move the two brackets 10 away from each other, so that the corrugated pressure blocks 51 can stretch the skin, which can effectively stretch the loose parts that may exist on the skin of the arm and reduce skin wrinkles.

[0029] The scanning component is used to image blood vessels; The two massage components are used to massage the arms respectively; The two stretching components are used to fix and tighten the butterfly sleeves below the inner side of the elbows of elderly patients; The adjustment component is used to accommodate elderly patients who have elbow contractures and are unable to straighten the elbow.

[0030] The stretching assembly consists of a lifting seat 28, a corrugated airbag 29, two corrugated arc blocks 26 and a plurality of second springs 52. The lifting seat 28 is slidably connected to the mounting seat 27. The corrugated airbag 29 above can hold up the butterfly sleeves of the elderly patient's elbows. As the first rack 24 moves, it can drive the gear 25 to rotate, causing the second rack 32 to slide, thereby lifting the mounting seat 27. A plurality of second springs 52 are respectively fixedly connected to the two L-shaped blocks 50, and the two corrugated arc blocks 26 are respectively fixedly connected to the plurality of second springs 52. Through the resilience of the second springs 52, the corrugated arc blocks 26 can be tightly attached to both sides of the patient's arms.

[0031] In this embodiment, the display bracket 14 is first rotated 180 degrees, and then the limiting ring 47 is clamped in the annular groove on the display bracket 14 to fix the display bracket 14, and the mounting bracket 2 is clamped under the bed edge, and then the third screw rod 22 is turned to make the limiting block 3 slide, so that it clamps the bed edge with the mounting bracket 2, and the support box 1 is rotated to the bed. When the patient places his arm on the mounting seat, the two third electric telescopic rods 53 are used to respectively lower the two corrugated pressing blocks 51 to press the arm, and then the bidirectional screw rod 49 is turned to make the two corrugated pressing blocks 51 move away from each other, thereby stretching the skin, which can effectively stretch the loose skin on the arm. Part, reduce skin wrinkles, by turning the two knobs to rotate the two second screw rods 42, so that the two first racks 24 respectively drive the gear 25 to rotate, at this time, the gear 25 drives the second rack 32 and the lifting seat 28 to slide upward under the action of the first rack 24, so that the corrugated airbag 29 lifts the butterfly sleeve, and then the second sleeve 46 is turned to make the fourth screw rod 44 drive the arc mounting block 16 and the corrugated arc block 26 to descend, and under the action of the second spring 52, the corrugated arc block 26 is tightly attached to the patient's arm, and the wrinkled skin of the patient is pulled down while descending, so that a reliable fulcrum can be found for puncture, which significantly improves the success rate of puncture. Embodiment 2:

[0032] Different from the first embodiment, Figure 1 - Figure 3 , Figure 5 - Figure 7 as well as Fig.10 , this embodiment also has the following further contents: The two rubber ropes 20 connected at both ends of the mounting seat 27 can play the role of tightening and limiting the arm placed on the mounting seat and exposing the blood vessels. The first screw 11 rotating on the inner wall of the support box 1 can provide a stable linear driving force when driving the parts connected to it to move. The worm wheel 30 connected to one end of the first screw 11 is meshed with the worm 31 rotating on the inner wall of the support box 1. When the medical staff turns the handle at one end of the worm 31, the first screw 11 can be driven to rotate through the transmission of the worm wheel and worm, thereby achieving precise adjustment. The two slideways 13 on the support box 1 ensure the stability of the movement of the parts, and the second slide rail 36 is fixed in the support box 1.

[0033] The adjustment component 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 fixed on the third slider 35 can be extended and retracted, driving the support plate 4 rotatably connected thereto to adjust the angle to adapt to the degree of arm bending of elderly patients. The fourth slider 34 is slidably sleeved in the mounting seat 27 and is rotatably connected to the support plate 4 to assist the support plate 4 in stable movement and angle adjustment. Two Velcro strips 21 are provided on the support plate 4, which are used to fix the patient's forearm by fitting the two Velcro strips 21 together.

[0034] The scanning assembly is composed of two first sliders 5, two first electric telescopic rods 7, a round rod 6, a second slider 8 and a scanner 9. The scanner 9 is a portable ultrasonic scanner that can detect the depth, diameter, direction and internal blood flow of blood vessels, and provide a key basis for the positioning of the puncture point. The two first sliders 5 slide on the first screw rod 11 and the first slide rod 12 respectively. Through the cooperation of the two, the scanner 9 can be moved along the upper part of the patient's arm. The two first electric telescopic rods 7 are installed in the first slider 5, and the height of the scanner 9 can be flexibly adjusted. The round rod 6 connects the output ends of the two first electric telescopic rods 7 to provide sliding and rotating support for 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 a comprehensive scan of different positions of the patient's arm, which is convenient for medical staff to clearly observe the condition of the blood vessels.

[0035] In this embodiment, according to the length of the patient's arm, the second electric telescopic rod 15 is pulled to slide in the second slide rail 36, so as to adjust the distance between the patient's forearm and the upper arm. Then, according to the degree to which the elderly patient's arm can be bent, the second electric telescopic rod 15 is used to adjust the angle of the support plate 4, so that the elderly patient whose arm cannot be straightened can easily put his hand on it. Finally, the arm is tied tightly by the rubber rope 20, and the forearm is fixed with Velcro 21, so as to effectively prevent the arm from moving during the puncture process, thereby ensuring the accuracy and safety of the puncture. Twisting the handle can drive the worm 31 to rotate, so that the worm gear 30 drives the first screw 11 to rotate, so that the first slider 5 drives the scanner 9 to scan and detect the patient's arm. Then, the height of the scanner can be adjusted by driving the round rod 6 through the first electric telescopic rod 7, and the angle and lateral position of the scanner 9 can be adjusted by pushing the second slider 8. In this way, before puncture, the depth, diameter, diameter, direction and relationship of the blood vessel with the surrounding tissue can be carefully observed, so as to quickly lock the puncture point, and the angle can be adjusted according to the bending degree of the patient's arm. Embodiment three:

[0036] Reference Figure 3 , Figure 7 as well as Figure 8 , compared with the first embodiment and the second embodiment, in this embodiment: The massage assembly consists of a first slat 41, a second slat 40, a plurality of second push blocks 37, a plurality of first springs 19 and a plurality of massage rods 23. The first slat 41 is fixedly connected between the support box 1 and the mounting plate 43 to provide a stable support and provide a track for the sliding of the massage rod 23. The corresponding second slat 40 is also fixed between the support box 1 and the mounting plate 43 to provide an installation site for the second push block 37. The second push blocks 37 are distributed on the second slats 40. Each second push block 37 is connected to a massage rod 23 and is responsible for pushing the massage rod 23 to move. The massage rod 23 slides on the first slat 41, and the massage ball at the top directly contacts the patient's arm to achieve a 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 slat 41. During the massage process, the first spring 19 can be compressed when subjected to force to enable the massage rod 23 to move up and down, and can also help the massage rod 23 return to its original position after the force disappears, thereby ensuring the continuation of the massage action. The first push block 38 fixed on the first slider 5 will contact the inclined surfaces of the second push blocks 37 in sequence during the movement of the first slider 5. When the two are in contact, the first push block 38 pushes the second push block 37, driving 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, thereby achieving a cyclic massage of the patient's entire arm.

[0037] It should be noted that the massage component needs to be used before the stretching component works to prevent the arc-shaped mounting block 16 from limiting the massage rod 23 so that the massage rod 23 cannot directly act on the patient's arm.

[0038] In this embodiment, when the first slider 5 slides on the first screw rod 11, the inclined surface of the first push block 38 contacts and pushes the inclined surfaces of several second push blocks 37 in sequence, so that the second push block 37 pushes the massage rod 23 and compresses the first spring 19, and the massage ball on the massage rod 23 massages and relaxes the patient's arm upward. Then, when the first push block 38 leaves, the massage rod 23 returns to its original position under the action of the first spring 19, and 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, the patient's muscle tension caused by tension is relieved, the degree of vascular contraction is further reduced, and more favorable conditions are created for subsequent precise puncture.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A puncture fixation device for a medium-length catheter, characterized in that: It comprises a support box (1), a scanning component, two massage components, two stretching components and an adjustment component; The support box (1) is fixedly connected with a mounting seat (27), the support box (1) is fixedly connected with two mounting plates (43), the inner wall of the support box (1) is rotatably connected with a first screw rod (11), a first slide bar (12) is fixedly connected between the mounting plate (43) and the support box (1), two slideways (13) are provided on the support box (1), first slide rails (33) are fixedly connected on both sides of the mounting seat (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), two slide grooves are provided on the upper inner wall of the support box (1), the first rack (24) is slidably connected to the two slide grooves on the upper inner wall of the support box (1), the support box (1) is fixedly connected with a second slide rail (36), and two brackets (10) are provided on the support box (1); The scanning assembly is used to image blood vessels; The two massage components are used to massage the arms respectively; The two stretching components are respectively used to fix and tighten the butterfly sleeves below the inner side of the elbows of elderly patients; The adjustment component is used to adapt to elderly patients who have elbow contracture and cannot straighten their elbows.

2. A 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 screw rod (44) is internally threadedly connected to the second sleeve (46), an end of the fourth screw rod (44) away from the second sleeve (46) is rotatably connected to an arc-shaped mounting block (16), a slide cylinder (45) is slidably sleeved in each of the two first sleeves (17), and ends of the two slide cylinders (45) away from the first sleeves (17) are respectively fixedly connected to the arc-shaped mounting block (16), and 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: The scanning assembly comprises 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 respectively slidably connected to a first screw rod (11) and a first slider (12); the two first electric telescopic rods (7) are respectively fixedly mounted in the two first sliders (5); the round rod (6) is fixedly connected to the output ends 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 mounted on the second slider (8).

4. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that: The massage assembly comprises a first slat (41), a second slat (40), a plurality of second push blocks (37), a plurality of first springs (19) and a plurality of massage rods (23); the first slat (41) is fixedly connected between a support box (1) and a mounting plate (43); the second slat (40) is fixedly connected between the support box (1) and the mounting plate (43); a plurality of second push blocks (37) are respectively arranged on the second slat (40); a plurality of massage rods (23) are respectively slidably connected to the first slat (41); a plurality of massage rods (23) are respectively fixedly connected to the plurality of second push blocks (37); massage balls are arranged at the top ends of the plurality of massage rods (23); 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 slat (41).

5. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that: The stretching assembly is composed of a lifting seat (28), a corrugated airbag (29), two corrugated arc blocks (26) and a plurality of second springs (52); the lifting seat (28) is slidably connected to the mounting seat (27); the corrugated airbag (29) is arranged on the lifting seat (28); the plurality of second springs (52) are respectively fixedly connected to the two L-shaped blocks (50); and the two corrugated arc blocks (26) are respectively fixedly connected to the plurality of second springs (52).

6. The puncture and fixation device for a medium-length catheter according to claim 1, characterized in that: The adjustment assembly is composed 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 mounted on the third slider (35); the fourth slider (34) is slidably sleeved in a mounting seat (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: A mounting bracket (2) is rotatably connected to the lower portion of the support box (1), a second slide groove (18) is provided on the mounting bracket (2), a third screw rod (22) is rotatably connected in the second slide groove (18), a limit block (3) is threadedly connected to the third screw rod (22), the limit block (3) is slidably connected in the second slide groove (18), a display bracket (14) is rotatably connected to the support box (1), a third slide groove (39) is provided below the support box (1), and the display bracket (14) is arranged 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 meshedly connected with the first rack (24) and the second rack (32), two second screw rods (42) are rotatably connected in the support box (1), the two first racks (24) are respectively threadedly connected to the two second screw rods (42), one end of the two second screw rods (42) is respectively fixedly connected with a knob, and two rubber ropes (20) are respectively fixedly connected at both ends of the mounting seat (27).

9. The puncture and fixation device for a medium-length catheter according to claim 3, characterized in that: One end of the first screw rod (11) is fixedly connected to a worm wheel (30), the inner wall of the support box (1) is rotatably connected to a worm (31), the worm (31) is meshingly connected to the worm wheel (30), one end of the worm (31) is fixedly connected to a handle, the first sliding block (5) is fixedly connected to a first push block (38), and the support box (1) is rotatably connected to a limit ring (47).

10. The puncture and fixation device for a medium-length catheter according to claim 6, characterized in that: The support box (1) is provided with two grooves, a bidirectional screw rod (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), the two brackets (10) are slidably connected to the bidirectional screw rod (49) and the second slide rod (48), the two brackets (10) are slidably connected to the two grooves on the support box (1), two third electric telescopic rods (53) are respectively 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), and the bottom of the two third electric telescopic rods (53) is respectively fixedly connected to a corrugated pressure block (51), and two Velcro strips (21) are provided on the support plate (4).

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