PICC (Peripherally Inserted Central Catheter) fixing equipment capable of improving puncture success rate

Abstract

The invention provides PICC (peripherally inserted central catheter) fixing equipment capable of improving puncture success rate, and belongs to the technical field of medical instruments. Comprising a fixing plate, a bearing seat is fixedly connected to the top of the fixing plate, an arc-shaped groove is formed in the top of the bearing seat, and movable mechanisms are arranged at the lower ends of the two sides of the bearing seat. During application, the ultrasonic probe can be inserted into the guide base frame, the second screw rod is rotated to move upwards, the end of the second screw rod tightly presses the bottom of the probe, accurate clamping is achieved, the probe can work stably, when the ultrasonic probe is positioned, if the longitudinal angle needs to be adjusted, operation is very convenient, the limiting frame is slightly pulled, the displacement block is driven to move upwards, and the spring is stretched; according to the device, by means of multi-dimensional flexible adjustment of the ultrasonic probe and cooperation of a puncture needle and a needle guide device for precise puncture, the device perfectly adapts to various scenes, puncture deviation is effectively avoided, and the puncture success rate is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically to a PICC catheter fixing device capable of improving the success rate of puncture. Background Art

[0002] PICC is a peripherally inserted central venous catheter, which is mainly inserted through a peripheral vein. A special thin catheter is placed in the central vein such as the superior vena cava or inferior vena cava. It provides a venous access for long-term infusion, infusion of irritating drugs or parenteral nutrition, etc., and reduces the harm of frequent venous puncture to patients and the stimulation of drugs on peripheral veins. However, during the PICC catheterization and puncture process, accurate positioning has always been a key problem that troubles medical staff;

[0003] The traditional PICC auxiliary positioning method relies on ultrasound technology. The specific operation requires the PICC inserter to hold the ultrasound probe tightly with one hand and try to make it fit closely to the skin surface of the patient's arm to obtain a clear ultrasound image of the blood vessels. At the same time, the other hand must hold the puncture needle steadily and carefully push the puncture along the groove of the needle guide fixed on the ultrasound probe. This seemingly simple division of labor and cooperation actually exposes many disadvantages in actual application.

[0004] On the one hand, it is not easy for medical staff to hold the ultrasound probe in one hand for a long time and keep it stable. The muscles of the human hand are easily fatigued under continuous force. Once there is a slight shake or relaxation, the ultrasound probe will deviate from the ideal position. On the other hand, when encountering more complicated puncture situations, such as abnormal blood vessels, different depths, or large interference from surrounding tissues, medical staff often need to focus more on the operation of the puncture needle, and may inadvertently cause the handheld ultrasound probe to move;

[0005] This positional deviation caused by the ultrasound probe being driven by the hand, even if it is only a few millimeters, can lead to catastrophic consequences in high-precision PICC catheter puncture scenarios. Not only will the originally clearly visible vascular ultrasound image be blurred instantly, causing the puncture personnel to be unable to accurately judge the relative position of the puncture needle and the blood vessel, it may also directly cause puncture failure, increase the patient's pain, prolong the operation time, and even cause a series of complications such as vascular damage and infection. Summary of the invention

[0006] In view of the problem that the prior art lacks positioning and flexible adjustment of the ultrasound probe, the purpose of the present invention is to provide a PICC catheter fixation device that can improve the puncture success rate.

[0007] To solve the above problems, the present invention adopts the following technical solutions:

[0008] A PICC catheter fixing device capable of improving the success rate of puncture comprises a fixing plate, the top of the fixing plate is fixedly connected with a receiving seat, the top of the receiving seat is provided with an arc-shaped groove body, the lower ends of both sides of the receiving seat are provided with movable mechanisms, the top of the movable mechanism is fixedly connected with an adjustment mechanism, one side of the adjustment mechanism is fixedly installed with a guide mechanism, one side of the two sides of the receiving seat is fixedly connected with a binding belt at an equal interval, the other side of the two sides of the receiving seat is fixedly connected with a card frame at an equal interval, and the back of the card frame is threadedly connected with a first screw;

[0009] The guiding mechanism includes a frame, which is fixedly installed on one side of the adjusting mechanism. Turntables are rotatably connected to both sides of the end of the frame away from the adjusting mechanism, a positioning component is fixedly installed on the inner side of the turntable, and a limiting component is fixedly installed on the front end of the side of the frame away from the adjusting mechanism, and the inner side of the limiting component is connected to a turntable.

[0010] Optionally, the positioning assembly includes a guide base, which is fixedly installed between the inner sides of the turntable, a positioning frame is fixedly installed in the middle of the bottom of the guide base, a positioning plate is fixedly installed in the middle of the positioning frame, a second screw is threadedly connected to the inner side of the positioning plate, and the end of the second screw passes through the positioning plate and the guide base.

[0011] Optionally, the limiting component includes a fixed plate and a positioning block, the fixed plate is fixedly installed on the front side of one end of the frame away from the adjusting mechanism, the positioning block is rotatably connected to the outer side of the fixed plate, the inner side of the positioning block is fixedly connected to the outer side of a rotating plate, a positioning groove is opened on the inner side of the positioning block, a limiting spring is fixedly connected to the inner side of the positioning groove, a displacement block is fixedly connected to the top of the limiting spring, a limiting frame is fixedly connected to the top of the displacement block, limiting holes are opened at equal intervals on the outer side of the fixed plate, and the end of the limiting frame is inserted into the inside of the limiting hole.

[0012] Optionally, the movable mechanism includes a slide groove, which is opened at the lower ends of both sides of the receiving seat, the inner side of the slide groove is slidably connected with a slide plate, the outer side of the slide plate is fixedly installed with a support frame, and the top of the support frame is connected to the bottom of the adjustment mechanism.

[0013] Optionally, a third screw rod is threadedly connected to the outer side of the support frame, and an end of the third screw rod passes through the support frame.

[0014] Optionally, square grooves are formed at equal intervals on both sides of the receiving seat, and anti-slip grooves are formed at equal intervals and arranged linearly inside the square grooves, and the end of the third screw is fitted and connected to the anti-slip groove in the square groove.

[0015] Optionally, the adjustment mechanism includes an arc-shaped track, which is fixedly connected to the top of the support frame, and a slider is slidably connected inside the arc-shaped track. A fine-tuning component is fixedly installed on the top of the slider, and a side of the slider away from the frame is fixedly connected to a limiting component.

[0016] Optionally, the fine-tuning assembly includes a top frame, a base plate is fixedly connected to the outer side of the top frame, a top plate is fixedly installed on the bottom of the base plate, a connecting plate is rotatably connected to the bottom of the top plate, the connecting plate is arranged in a semicircular shape, the bottom of the connecting plate is fixedly connected to the top of the frame, a fourth screw is threadedly connected to the outer side of the top plate, and the top of the connecting plate is provided with clamping holes arranged in a semi-arc shape at equal intervals, and the end of the fourth screw passes through the top plate and is inserted into the inner side of the clamping hole.

[0017] Optionally, the limit assembly includes a limit arm and a limit hole, the limit arm is fixedly connected to the bottom of the slider, a reserved groove is opened on the top of the limit arm, the inner side of the reserved groove is fixedly connected to a limit spring, the outer end of the limit spring is fixedly connected to a sliding block, the top of the sliding block is fixedly connected to a limit plate, the upper end of the limit plate on one side close to the arc track is fixedly connected to a limit shaft, and the end of the limit shaft is inserted into the inside of the limit hole.

[0018] Optionally, a pull ring is fixedly connected to the outer side of the limiting plate, and the first screw rod, the second screw rod, the third screw rod and the fourth screw rod are all configured as hand-tightened screw rods.

[0019] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0020] In the above scheme, the patient's arm is stably placed on the arc-shaped groove at the top of the receiving seat, and then the straps at both ends are accurately inserted into the card frame, and the arm is flexibly pulled according to the thickness of the arm until the straps are tightened to provide preliminary fixation for the arm, and then the first screw is rotated inward to squeeze the straps. Since there are straps on both sides of the receiving seat, a reliable restraint is formed. For active children, this fixation method can significantly improve the success rate of puncture. In the puncture positioning link, controlling the sliding of the slide plate is the key. The sliding of the slide plate can accurately adjust the lateral position of the guide mechanism. After adjustment, the third screw is rotated to insert into the square groove, and the slide plate is locked by fitting with the anti-slip strip groove, so that the device can not only stably position the arm, but also conveniently adjust the guide position, creating favorable conditions for successful puncture.

[0021] During the use of the device, if the positioned arm needs to be adjusted, the operation is not complicated. Gently pull the pull ring, the pull ring drives the limit plate to move outward, and the sliding block connected to it pulls the limit spring to stretch, so that the limit shaft can be separated from the limit hole, and the arc track slider can be adjusted to slide along the arc. According to the puncture position requirements, the position of the guide mechanism can be flexibly and accurately adjusted to meet the requirements of different puncture points. After the adjustment is completed, release the pull ring, and the limit spring will reset in the reserved groove by elasticity, driving the sliding block to push the limit plate and the limit shaft back to the corresponding hole to lock the adjustment mechanism. In addition, if you want more precise adjustment, turn the top plate connecting plate to drive the guide mechanism to rotate. After adjustment, turn the fourth screw to insert the card hole to fix it. Multiple auxiliary adjustments can greatly improve the adaptability of the device.

[0022] By inserting the ultrasonic probe into the guide base frame, and then rotating the second screw rod upward, its end portion squeezes the bottom of the probe to achieve precise positioning, ensuring that the ultrasonic probe is stable and does not move during operation. After the ultrasonic probe is positioned, if the longitudinal angle needs to be adjusted, the operation is relatively simple. Gently pull the limit frame to drive the displacement block to move upward and stretch the limit spring to disengage the limit frame from the positioning hole. The rotation angle of the guide base frame on the inner side of the turntable can be freely adjusted, and the longitudinal guide angle can be changed as needed. After the adjustment is completed, the limit frame is released, the limit spring is reset, and the displacement block is driven to move downward to insert the limit frame into the limit hole to ensure the accurate position of the guide base frame. The device can adjust the guide base frame in multiple dimensions according to needs. After the ultrasonic probe is positioned, the puncture needle is inserted, and precise puncture is performed with the help of the needle guide. The innovative design adapts to multiple scenarios, avoids puncture deviation, and ensures the smooth progress of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0026] Figure 3 It is a bottom view structural schematic diagram of the present invention;

[0027] Figure 4 It is a side view structural schematic diagram of the present invention;

[0028] Figure 5 It is a front view structural diagram of the adjustment mechanism and the guide mechanism of the present invention;

[0029] Figure 6 It is a side view structural diagram of the adjustment mechanism and the guide mechanism of the present invention;

[0030] Figure 7It is a schematic diagram of the top view of the adjustment mechanism and the guide mechanism of the present invention;

[0031] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure at point A;

[0032] Fig. 9 For the present invention Figure 7 Schematic diagram of the enlarged structure at B.

[0033] [Reference Signs]

[0034] 1. Fixed plate; 2. Socket; 3. Arc-shaped trough; 4. Card frame; 5. First screw;

[0035] 6. movable mechanism; 61. slideway; 62. slide plate; 63. support frame; 64. third screw rod; 65. square groove; 66. anti-slip groove;

[0036] 7. Adjustment mechanism; 71. Arc track; 72. Slider;

[0037] 73, fine-tuning assembly; 731, top frame; 732, base plate; 733, top plate; 734, clamping hole; 735, connecting plate; 736, fourth screw;

[0038] 74, limit assembly; 741, limit arm; 742, limit hole; 743, reserved groove; 744, limit spring; 745, sliding block; 746, limit plate; 747, limit shaft; 748, pull ring;

[0039] 8. Binding straps;

[0040] 9. guide mechanism; 91. frame; 92. turntable;

[0041] 93, positioning assembly; 931, guide base frame; 932, positioning frame; 933, positioning plate; 934, second screw;

[0042] 94. Limiting assembly; 941. Fixed plate; 942. Positioning block; 943. Positioning groove; 944. Limiting spring; 945. Displacement block; 946. Limiting frame; 947. Limiting hole.

[0043] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0045] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0046] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0047] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0048] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0049] like Figures 1 to 9As shown, an embodiment of the present invention provides a PICC catheter fixing device capable of improving the success rate of puncture, comprising a fixing plate 1, a receiving seat 2 is fixedly connected to the top of the fixing plate 1, an arc-shaped groove 3 is provided on the top of the receiving seat 2, movable mechanisms 6 are provided at the lower ends of both sides of the receiving seat 2, an adjusting mechanism 7 is fixedly connected to the top of the movable mechanism 6, a guiding mechanism 9 is fixedly installed on one side of the adjusting mechanism 7, binding straps 8 are fixedly connected to one side of the two sides of the receiving seat 2 at equal intervals, a card frame 4 is fixedly connected to the other side of the two sides of the receiving seat 2 at equal intervals, and a first screw 5 is threadedly connected to the back of the card frame 4.

[0050] The guiding mechanism 9 comprises a frame 91, and the frame 91 is fixedly mounted on one side of the adjusting mechanism 7. A turntable 92 is rotatably connected to both sides of the inner end of the frame 91 away from the adjusting mechanism 7. A positioning component 93 is fixedly mounted on the inner side of the turntable 92. A limiting component 94 is fixedly mounted on the front end of the side of the frame 91 away from the adjusting mechanism 7. The inner side of the limiting component 94 is connected to a turntable 92. The fixing plate 1 provides a stable support for the whole device. The arc-shaped groove body 3 of the receiving seat 2 at the top can fit the patient's arm well, making the arm more comfortable when placed. The straps 8 on one side of the receiving seat 2 cooperate with the card frame 4 on the other side, and can be freely adjusted according to the thickness of the patient's arm. The first screw rod 5 on the back of the fixed and rotating card frame 4 can be further reinforced to ensure that the arm is in a stable state. The movable mechanisms 6 at the lower ends of both sides are easy to operate, and the adjusting mechanism 7 connected to the top can be accurately adjusted according to the puncture requirements. The two cooperate well to create good conditions for puncture. The frame 91 in the guiding mechanism 9 is fixed on one side of the adjusting mechanism 7, and the turntables 92 on both sides of one end of the frame 91 can rotate flexibly. The positioning component 93 on the inside of the turntable 92 can accurately lock the position of the ultrasonic probe. The limiting component 94 at the front end of the frame 91 is connected to the turntable 92, which plays an outstanding role in positioning the ultrasonic probe and adjusting the longitudinal angle. When puncturing, the puncture needle is inserted, and its guidance can effectively improve the success rate of puncture.

[0051] like Figures 5 to 7As shown, the positioning assembly 93 includes a guide base 931, the guide base 931 is fixedly installed between the inner sides of the rotating disk 92, a positioning frame 932 is fixedly installed in the middle of the bottom of the guide base 931, a positioning plate 933 is fixedly installed in the middle of the positioning frame 932, the inner side of the positioning plate 933 is threadedly connected with a second screw 934, the end of the second screw 934 passes through the positioning plate 933 and the guide base 931, the limiting assembly 94 includes a fixed plate 941 and a positioning block 942, the fixed plate 941 is fixed Installed on the front side of one end of the frame 91 away from the adjustment mechanism 7, the positioning block 942 is rotatably connected to the outer side of the fixed disk 941, the inner side of the positioning block 942 is fixedly connected to the outer side of a rotating disk 92, a positioning groove 943 is provided on the inner side of the positioning groove 943, a limiting spring 944 is fixedly connected to the inner side of the limiting spring 944, a displacement block 945 is fixedly connected to the top of the displacement block 945, a limiting frame 946 is fixedly connected to the top of the fixed disk 941, and limiting holes are provided at equal intervals on the outer side of the fixed disk 941. 947, the end of the limiting frame 946 is inserted into the inner part of the limiting hole 947, the guiding base frame 931 is located inside the turntable 92, and the ultrasonic probe is placed stably. The bottom positioning frame 932 cooperates with the middle positioning plate 933, and the end of the second screw 934 connected by thread runs through the two. By rotating the second screw 934, the ultrasonic probe can be firmly fixed so that it will not shift during operation, ensuring the stability of ultrasonic detection and finding the direction for puncture. In the limiting component 94, the fixed plate 941 provides a support point on the front side of one end of the frame 91, and the positioning block 942 and the fixed plate 9 41. The turntable 92 is freely linked, and the limiting spring 944, the displacement block 945, the limiting frame 946 in the positioning groove 943 and the limiting hole 947 on the outer side of the fixed plate 941 work together. To adjust the longitudinal angle of the ultrasonic probe, pull out the limiting frame 946, the limiting spring 944 stretches, and the limiting frame 946 escapes from the limiting hole 947, so that the turntable 92 and the guide base frame 931 can be flexibly rotated; after adjustment, release it, the limiting spring 944 resets and drives the limiting frame 946 to insert back into the limiting hole 947, accurately locks the position, and allows the puncture operation to be accurately promoted, which can improve the success rate of puncture.

[0052] like Figures 1 to 6As shown, the movable mechanism 6 includes a slide groove 61, and the slide groove 61 is opened at the lower ends of both sides of the receiving seat 2. A slide plate 62 is slidably connected to the inner side of the slide groove 61, and a support frame 63 is fixedly installed on the outer side of the slide plate 62. The top of the support frame 63 is connected to the bottom of the adjustment mechanism 7, and the outer side of the support frame 63 is threadedly connected to a third screw rod 64, and the end of the third screw rod 64 passes through the support frame 63. Square grooves 65 are evenly spaced on both sides of the receiving seat 2, and anti-slip grooves 66 are evenly spaced and linearly arranged on the inner side of the square groove 65. The ends of the third screw rod 64 are fitted and connected with the anti-slip grooves 66 in the square groove 65. The slide grooves 61 are opened at the lower ends of both sides of the receiving seat 2, and the slide plates 62 can slide smoothly inside the slide groove 61, providing a flexible movement basis for the adjustment mechanism 7 connected thereto. The support frame 63 fixed on the outside of the slide plate 62 is connected to the bottom of the adjustment mechanism 7 to ensure the stability of the structure. When adjustment is needed, the third screw 64 threadedly connected to the outside of the support frame 63 is rotated, and its end passes through the support frame 63, and can be accurately inserted into the anti-slip strip grooves 66 arranged linearly at equal intervals in the square grooves 65 on both sides of the receiving seat 2, so that the slide plate 62 can be quickly fixed in the ideal position. This design allows the lateral position of the adjustment mechanism 7 to be changed as needed. Whether it is to cope with different patient arm conditions or to find the best angle for puncture, it can be quickly adjusted into place, effectively assisting the precise implementation of the puncture operation and improving the success rate of puncture.

[0053] like Figures 1 to 6 and Fig. 9As shown, the adjustment mechanism 7 includes an arc-shaped track 71, the arc-shaped track 71 is fixedly connected to the top of the support frame 63, the inner part of the arc-shaped track 71 is slidably connected to a slider 72, the top of the slider 72 is fixedly installed with a fine-tuning component 73, the side of the slider 72 away from the frame 91 is fixedly connected to a limiting component 74, the fine-tuning component 73 includes a top frame 731, the outer side of the top frame 731 is fixedly connected to a base plate 732, and the bottom of the base plate 732 is fixedly installed with a top plate 731. 33, the bottom of the top plate 733 is rotatably connected to a connecting plate 735, the connecting plate 735 is semicircular, the bottom of the connecting plate 735 is fixedly connected to the top of the frame 91, the outer side of the top plate 733 is threadedly connected to a fourth screw 736, the top of the connecting plate 735 is semi-arc-shaped and has holes 734 arranged at equal intervals, the end of the fourth screw 736 passes through the top plate 733 and is inserted into the inner side of the hole 734, the limiting assembly 74 includes a limiting arm 741 and a limiting The limiting arm 741 is fixedly connected to the bottom of the slider 72, and a reserved groove 743 is provided on the top of the limiting arm 741. The inner side of the reserved groove 743 is fixedly connected to a limiting spring 744. The outer end of the limiting spring 744 is fixedly connected to a sliding block 745. The top of the sliding block 745 is fixedly connected to a limiting plate 746. The upper end of the limiting plate 746 close to the arc track 71 is fixedly connected to a limiting shaft 747. The end of the limiting shaft 747 is inserted Inside the limiting hole 742, a pull ring 748 is fixedly connected to the outer side of the limiting plate 746. The first screw 5, the second screw 934, the third screw 64 and the fourth screw 736 are all configured as hand-tightened screws. The arc track 71 is firmly fixed to the top of the support frame 63. The slider 72 inside the track can slide freely and flexibly, which creates the basic conditions for subsequent adjustments. The fine-tuning component 73 on the top works closely with the limiting component 74 on one side of the slider 72 to achieve precise control.

[0054] In the fine-tuning assembly 73, the top frame 731, the base plate 732, the top plate 733, and the connecting plate 735 are combined and cooperated in sequence. The connecting plate 735 is semicircular, and its bottom is firmly fixed to the frame 91. When the angle of the frame 91 needs to be finely adjusted, the hand-tightened fourth screw 736 threadedly connected to the outside of the top plate 733 is rotated. With the rotation and advancement of the screw, its end can be accurately and correctly inserted into the semi-arc-shaped and evenly spaced card holes 734 on the top of the connecting plate 735, thereby achieving precise adjustment of the angle of the frame 91. In the limit assembly 74, the limit arm 741 serves as the basic support, and the internal limit spring 744, the sliding block 745, the limit plate 746, the limit shaft 747 and the limit hole 742 cooperate with each other. When the pull ring 748 on the outer side of the limit plate 746 is pulled, the external force causes the limit shaft 747 to escape from the limit hole 742. At this time, the slider 72 is released from the restriction and can slide smoothly along the arc track 71. The position can be flexibly changed according to actual needs. After the position adjustment is completed, the pull ring 748 is released, and the limit spring 744 plays a reset role, pushing the limit shaft 747 to be reinserted into the limit hole 742 and locked, ensuring that the adjusted position is stable and unchanged. Whether it is to make adaptive adjustments in response to individual differences of different patients, or to accurately position the puncture process, the adjustment mechanism 7 can allow the operator to easily control it according to the above principle, quickly and accurately complete the adjustment, effectively ensure the smooth progress of the puncture, and improve the success rate.

[0055] The workflow of the technical solution provided by the present invention is as follows:

[0056] First, place the patient's arm steadily in the arc-shaped groove 3 on the top of the receiving seat 2, and accurately insert the pre-prepared straps 8 at both ends of the receiving seat 2 into the inner side of the card frame 4. Then, according to the actual thickness of the patient's arm, flexibly pull the strap 8 to make it move smoothly inside the card frame 4 until the strap 8 is pulled to a taut state, thereby firmly fixing the arm. On this basis, rotate the first screw 5 to move it inward, thereby squeezing the strap 8 inside the card frame 4. Since the receiving seat 2 is equipped with straps 8 on both sides, this can provide a reliable binding force for the arm to ensure that the arm is in a stable state. Especially for children, this kind of active group, this way of fixing the arm can effectively increase the chance of successful puncture.

[0057] During the puncture positioning operation, the slide plate 62 inside the slide groove 61 is manipulated to slide, and the sliding of the slide plate 62 can accurately adjust the lateral position of the guide mechanism 9. When the lateral position is adjusted to an ideal state, the third screw rod 64 is rotated and inserted into the inner side of the square groove 65. With the help of the close fit between the third screw rod 64 and the anti-slip strip groove 66, the position of the slide plate 62 can be quickly and effectively locked to prevent it from moving at will. In this way, the device can not only firmly and stably position the patient's arm, but also conveniently adjust the lateral position of the guide mechanism 9, which is of great help in improving the success rate of puncture.

[0058] During use, if the patient's arm needs to be adjusted after the initial positioning is completed, the operation process is not complicated. You only need to pull the pull ring 748 by hand. After the pull ring 748 is subjected to force, it will drive the limit plate 746 to move outward, and the sliding block 745 connected to it will also move synchronously, pulling the limit spring 744 to stretch it, until the limit shaft 747 at the end of the limit plate 746 is completely separated from the inner side of the limit hole 742. At this time, the sliding state of the slider 72 inside the arc track 71 can be smoothly adjusted. The slider 72 will slide in an arc along the arc track 71, and according to the specific requirements of the puncture position on the patient's arm, it can be flexibly and accurately adjusted, thereby driving the position of the guide mechanism 9 on the arm to change accordingly.

[0059] After the adjustment is completed, release the pull ring 748. At this time, the limit spring 744 will quickly return to its initial state in the reserved groove 743 due to its own elastic retraction characteristics, thereby driving the sliding block 745 to move in the reserved groove 743 to the side where the guide mechanism is located. The sliding block 745 will push the limit plate 746 and the limit shaft 747 on its top, and accurately insert them into the limit hole 742 at the corresponding position. The tight engagement between the limit shaft 747 and the limit hole 742 can achieve a firm locking of the adjustment mechanism 7.

[0060] In addition, in actual use, the adjustment function of the present device is far more than a simple regulation of the horizontal and vertical positions of the guide mechanism 9. If there is a need for further fine adjustment, it is only necessary to rotate the connecting disk 735 at the bottom of the top plate 733. As the connecting disk 735 rotates, the guide mechanism 9 can be driven to rotate synchronously, thereby further optimizing the horizontal angle on the basis of the adjusted horizontal and vertical positions. When the adjustment work is completed, the fourth screw rod 736 is rotated to move it downward until the bottom of the fourth screw rod 736 is accurately inserted into the clamping hole 734 at the corresponding position. With the help of the limiting effect between the fourth screw rod 736 and the clamping hole 734, the adjusted guide mechanism 9 is firmly fixed. In summary, the present device can provide the operator with the convenience of multiple auxiliary adjustments during the overall use, greatly improving the adaptability of the device and laying a solid foundation for improving the success rate of puncture.

[0061] When using this device to work, first carefully insert the ultrasonic probe into the interior of the guide base 931, and then rotate the second screw 934 to move it upward. At this time, the end of the second screw 934 will squeeze the bottom of the ultrasonic probe inside the guide base 931, thereby achieving accurate positioning and fixation of the ultrasonic probe, ensuring that it will not be easily displaced during operation.

[0062] After the ultrasonic probe is positioned, if its longitudinal angle needs to be adjusted, the operation method is relatively simple. Just pull the limit frame 946 gently with your hand. After the limit frame 946 is subjected to force, it will drive the displacement block 945 to move upward, and at the same time stretch the limit spring 944 to make it in an extended state. At this time, the limit frame 946 will be separated from the positioning hole and get rid of the restraint. Then, the rotation angle of the guide base 931 on the inner side of the turntable 92 can be freely adjusted, and its longitudinal guide angle can be flexibly changed according to actual needs.

[0063] When the adjustment work is completed, release the limit frame 946, the limit spring 944 will quickly return to its original state, and then pull the displacement block 945 downward, the displacement block 945 will drive the limit frame 946 to be accurately inserted into the limiting hole 947, and through the mutual insertion and limitation between the limit frame 946 and the limiting hole 947, the guide base frame 931 can be re-secured and auxiliary clamped and installed to ensure the accuracy of its position.

[0064] It can be seen that the device can flexibly adjust the position, angle, direction and other dimensions of the guide base 931 according to the specific needs in the actual use process, thereby comprehensively improving the overall adaptability performance. Moreover, after the ultrasound probe is positioned, it is only necessary to smoothly insert the puncture needle into the groove of the needle guide on the ultrasound probe, and then carry out the puncture operation with the help of the precise guidance of the needle guide. This innovative mode that combines a fixed arm with a guided design can maximize the potential of the puncture success rate. At the same time, its flexible and changeable adjustable design can perfectly adapt to different puncture scenarios, effectively avoiding the occurrence of puncture failure due to puncture position deviation, and providing a solid guarantee for the smooth progress of PICC catheter puncture surgery.

[0065] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0066] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A PICC catheter fixing device capable of improving the success rate of puncture, comprising a fixing plate, characterized in that: The top of the fixed plate is fixedly connected with a receiving seat, the top of the receiving seat is provided with an arc-shaped groove body, the lower ends of both sides of the receiving seat are provided with movable mechanisms, the top of the movable mechanism is fixedly connected with an adjustment mechanism, one side of the adjustment mechanism is fixedly installed with a guide mechanism, one side of the two sides of the receiving seat is fixedly connected with binding straps at equal intervals, the other two sides of the receiving seat are fixedly connected with card frames at equal intervals, and the back of the card frame is threadedly connected with a first screw; The guiding mechanism includes a frame, which is fixedly installed on one side of the adjusting mechanism. Turntables are rotatably connected to both sides of the end of the frame away from the adjusting mechanism, a positioning component is fixedly installed on the inner side of the turntable, and a limiting component is fixedly installed on the front end of the side of the frame away from the adjusting mechanism, and the inner side of the limiting component is connected to a turntable.

2. The PICC catheter fixation device capable of improving the puncture success rate according to claim 1, characterized in that: The positioning assembly includes a guide base frame, which is fixedly installed between the inner sides of the turntable, a positioning frame is fixedly installed in the middle of the bottom of the guide base frame, a positioning plate is fixedly installed in the middle of the positioning frame, a second screw is threadedly connected to the inner side of the positioning plate, and the end of the second screw passes through the positioning plate and the guide base frame.

3. The PICC catheter fixation device capable of improving the puncture success rate according to claim 2, characterized in that: The limiting component includes a fixed plate and a positioning block, the fixed plate is fixedly installed on the front side of one end of the frame away from the adjusting mechanism, the positioning block is rotatably connected to the outer side of the fixed plate, the inner side of the positioning block is fixedly connected to the outer side of a rotating plate, a positioning groove is opened on the inner side of the positioning block, a limiting spring is fixedly connected to the inner side of the positioning groove, a displacement block is fixedly connected to the top of the limiting spring, a limiting frame is fixedly connected to the top of the displacement block, limiting holes are opened at equal intervals on the outer side of the fixed plate, and the end of the limiting frame is inserted into the inside of the limiting hole.

4. The PICC catheter fixation device capable of improving the puncture success rate according to claim 3, characterized in that: The movable mechanism includes a slide groove, which is opened at the lower ends of both sides of the receiving seat. The inner side of the slide groove is slidably connected with a slide plate, and the outer side of the slide plate is fixedly installed with a support frame. The top of the support frame is connected to the bottom of the adjustment mechanism.

5. The PICC catheter fixation device capable of improving the puncture success rate according to claim 4, characterized in that: The outer side of the support frame is threadedly connected with a third screw rod, and the end of the third screw rod passes through the support frame.

6. The PICC catheter fixation device capable of improving the puncture success rate according to claim 5, characterized in that: Square grooves are evenly spaced on both sides of the receiving seat, and anti-skid grooves are evenly spaced and arranged linearly inside the square grooves. The end of the third screw is fitted and connected with the anti-skid groove in the square groove.

7. The PICC catheter fixation device capable of improving the puncture success rate according to claim 5, characterized in that: The adjustment mechanism includes an arc track, which is fixedly connected to the top of the support frame. A slider is slidably connected inside the arc track, a fine-tuning component is fixedly installed on the top of the slider, and a side of the slider away from the frame is fixedly connected to a limiting component.

8. The PICC catheter fixation device capable of improving the puncture success rate according to claim 7, characterized in that: The fine-tuning assembly includes a top frame, a base plate is fixedly connected to the outer side of the top frame, a top plate is fixedly installed on the bottom of the base plate, a connecting plate is rotatably connected to the bottom of the top plate, the connecting plate is arranged in a semicircular shape, the bottom of the connecting plate is fixedly connected to the top of the frame, a fourth screw is threadedly connected to the outer side of the top plate, and the top of the connecting plate is semi-arc-shaped with clamping holes arranged at equal intervals, and the end of the fourth screw passes through the top plate and is inserted into the inner side of the clamping hole.

9. The PICC catheter fixation device capable of improving the puncture success rate according to claim 8, characterized in that: The limit assembly includes a limit arm and a limit hole, the limit arm is fixedly connected to the bottom of the slider, a reserved groove is opened on the top of the limit arm, a limit spring is fixedly connected to the inner side of the reserved groove, a sliding block is fixedly connected to the outer end of the limit spring, a limit plate is fixedly connected to the top of the sliding block, a limit shaft is fixedly connected to the upper end of the limit plate on one side close to the arc track, and an end of the limit shaft is inserted into the inside of the limit hole.

10. The PICC catheter fixation device capable of improving the puncture success rate according to claim 9, characterized in that: A pull ring is fixedly connected to the outer side of the limiting plate, and the first screw rod, the second screw rod, the third screw rod and the fourth screw rod are all configured as hand-tightening screw rods.

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