A skin tensioning fixator for PICC catheterization

Abstract

The present invention provides a skin tensioning fixator for PICC catheterization, belonging to the technical field of PICC catheterization. It includes two mounting brackets, and a base is fixedly installed in the middle of the tops of the two mounting brackets, and a positioning mechanism is installed on the top of the base. During PICC catheterization of the present invention, by rotating the adjusting plate, the connecting shaft drives the turntable to squeeze and compress the torsion spring, and the fourth screw is screwed into the card hole to lock the turntable. The PICC catheter is inserted into the winding rotating shaft and the positioning sleeve. After the catheterization is completed, the fourth screw is loosened, and the torsion spring resets to drive the turntable to rotate, prompting the connecting plate to wind the circumferences of the upper and lower winding rotating shafts, and winding the excess PICC catheter. The two-sided torsion springs act synchronously, and the winding is more efficient. When winding, the rotating shaft rotates to assist in smooth winding. If adjustment is required, turn the adjustment handle, and the lead screw drives the movable plate to slide in the top rail through the movable block. Due to the thread characteristics of the lead screw, the distance between the two PICC catheter fixators can be stably adjusted, changing the winding degree, avoiding the loosening and dragging of the tube body, and improving the stability.

Description

Technical Field

[0001] The present invention relates to the technical field of PICC catheterization, and more specifically, to a skin tensioning fixator for PICC catheterization. Background Art

[0002] Currently, in the modern medical field, PICC (Peripherally Inserted Central Catheter) as a key deep vein catheterization technology plays an indispensable role. It inserts a catheter through peripheral veins such as the basilic vein, median cubital vein, and cephalic vein in the arm, and precisely places the distal end of the catheter in the central large veins such as the superior vena cava or subclavian vein, opening up a safe and effective infusion pathway for many patients. During chemotherapy treatment, a large number of corrosive and irritating chemotherapy drugs rely on intravenous infusion to enter the human body. Given that once such drugs extravasate, it will cause serious consequences such as vasculitis, skin and soft tissue ulceration, and infection. It is extremely urgent to build a high-quality, stable and reliable venous channel;

[0003] However, when examining the existing PICC external catheter fixation methods, it is not difficult to find that there are many drawbacks. Traditionally, tape is mostly used to fix the external catheter. This method has obvious defects. On the one hand, the tape is extremely easy to fall off during daily use, and medical staff have to replace it frequently, which not only increases the workload, but also may interfere with the catheter stability due to frequent operations, and even pose an infection risk. On the other hand, the flexible fixation characteristic of the tape makes it difficult to ensure the precise positioning of the PICC catheter. During the daily activities of patients, even a slight limb movement can easily accidentally pull the catheter, directly stimulating and damaging the catheterization wound, affecting the wound healing process, and bringing unnecessary pain to the patients;

[0004] In addition, the existing technology also has deficiencies in the management of the PICC catheter body. During use, there is no special winding and fixing device for the redundant catheter body, resulting in the redundant PICC catheter being loosely exposed outside. This undoubtedly greatly increases the risk of the indwelling catheter being accidentally dragged. Once it occurs, it will not only cause the wound to crack and bleed, but also may lead to catheter displacement and prolapse, seriously threatening the treatment safety and rehabilitation process of patients. There is an urgent need to improve and optimize the existing technology. Summary of the Invention

[0005] Aiming at the problems in the existing technology that it is not convenient to stably position the PICC catheter and it is impossible to stably manage the PICC, which is likely to irritate the patient's wound, the purpose of the present invention is to provide a skin tensioning fixator for PICC catheterization.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A skin tensioning fixator for PICC catheterization, comprising two mounting brackets. In the middle of the tops of the two mounting brackets, a base is fixedly installed. On the top of the base, a positioning mechanism is installed. On one side of the top of the positioning mechanism, a winding mechanism is fixedly connected. On both sides of the bottom of the base, mounting mechanisms are fixedly installed;

[0008] The positioning mechanism includes mounting arms. The mounting arms are installed on both sides of the top of the base. Between the inner sides of the upper ends of the mounting arms, mounting disks are fixedly installed. Inside the mounting disks, positioning sleeves are rotatably connected. On the outside of one mounting disk, an adjusting disk is rotatably connected. On the upper end of the adjusting disk, a first screw rod is threadedly connected. The end of the first screw rod penetrates through the adjusting disk. The inner side of the adjusting disk is connected to one side of the positioning sleeve.

[0009] Optionally, on the outside of the mounting disk on the side with the adjusting disk, a plurality of limiting holes are arranged in an equidistant annular pattern. The end of the first screw rod is inserted into the inside of the limiting holes.

[0010] Optionally, on the side of the top of the positioning sleeve away from the winding mechanism, a second screw rod is threadedly connected. The end of the second screw rod penetrates through the positioning sleeve and is rotatably connected with a pressing block.

[0011] Optionally, the side shape of the mounting bracket is L-shaped. On the outside of the mounting bracket, mounting plates are fixedly installed. At both ends of the mounting plate, mounting holes are opened. The mounting holes are counterbored holes.

[0012] Optionally, the mounting mechanism includes a top seat and a groove body. The top seat is fixedly installed at the bottom of the base. The groove body is opened in the middle of the base and the middle of the top of the top seat. The bottom of the groove body penetrates through the top seat and the base. On both sides of the top seat, sliding grooves are opened. Inside the sliding grooves, sliding plates are slidably connected. On the outside of the sliding plates, fixed arms are fixedly connected. At the bottom of the fixed arms, a third screw rod is threadedly connected. The top of the third screw rod penetrates through the fixed arms and is rotatably connected with a limiting arc plate. On both sides of the bottom of the limiting arc plate, support rods are fixedly connected. The bottom of the support rods penetrates through the fixed arms. The support rods are movably connected with the fixed arms.

[0013] Optionally, the winding mechanism includes a connecting block. The connecting block is fixedly connected to the front and rear ends of one side of the mounting arm. On the top of the connecting block, a top rail is fixedly connected. At both ends between the inner sides of the two tops, side plates are fixedly connected. Inside the side plates, an adjusting assembly is provided. On both sides of the bottom of the adjusting assembly, PICC catheterization fixators are fixedly connected.

[0014] Optionally, the adjusting component includes a lead screw rotatably connected between the inner sides of two side plates. The outer end of the lead screw penetrates through the side plate and is fixedly connected with an adjusting handle. The thread directions at both ends of the lead screw are opposite. Both ends of the lead screw are threadedly connected with movable plates. Both ends of the movable plate are fixedly connected with movable blocks. The movable blocks are slidably connected inside the guide rails. The bottom of the movable plate is connected to the top of the PICC catheter fixator.

[0015] Optionally, the PICC catheter fixator includes a concave frame fixedly connected to the bottom of the movable plate. Elastic components are installed at both ends inside the concave frame. Connecting plates are fixedly connected to the inner sides of the elastic components. Winding rotating shafts are rotatably connected to the upper and lower ends between the inner sides of the connecting plates.

[0016] Optionally, the elastic component includes a fixed frame fixedly installed on both sides of the bottom of the concave frame. A torsion spring is fixedly connected inside the fixed frame. The inner end of the torsion spring is fixedly installed with a turntable rotatably connected to the inner end of the fixed frame. The inner side of the turntable is fixedly connected to the outer side of the connecting plate. A connecting shaft is fixedly connected to the outer side of the turntable. The outer end of the connecting shaft penetrates through the fixed frame and is fixedly connected with an adjusting plate. The connecting shaft is rotatably connected to the fixed frame. The upper end of the outer side of the adjusting plate is threadedly connected with a fourth screw. The end of the fourth screw penetrates through the adjusting plate.

[0017] Optionally, the first screw, the second screw, the third screw, and the fourth screw are all set as hand-tightening screws. Card holes are arranged in an equidistant circular arrangement on the outer side of the fixed frame. The end of the fourth screw penetrates through the adjusting plate and is inserted into the interior of the card hole.

[0018] The technical solution provided by the present invention has at least the following beneficial effects compared with the prior art:

[0019] In the above solution, the mounting holes of the mounting plate and bolts are used to fix it at positions such as the operating table or the hospital bed. Then, the patient's arm is extended into the top of the limiting arc plate between the top seat and the fixed arm. The third screw is rotated, and the limiting arc plate moves upward to cooperate with the top seat to clamp the arm. During fixation, the slide plate in the sliding groove can adjust the position of the fixed arm to adapt to the patient's puncture needs, accurately position the arm. The two groups of fixed arms can lock both ends of the puncture site to ensure stability. The groove body reserves a puncture space. The limiting arc plate and the top seat are provided with silica gel soft pads, which not only strengthen the clamping but also improve the patient's comfort. Before catheterization, the excess PICC catheter is placed in the winding mechanism. After the operation, the winding mechanism contracts to prevent the PICC tube from loosening, winding, or dragging, ensuring stability and avoiding secondary injuries.

[0020] During the catheter placement operation of the device, the positioning mechanism can be flexibly adjusted according to requirements. Rotate the positioning sleeve in the mounting disk according to the puncture angle, push the adjustment disk to drive the sleeve to rotate to the required angle. Then, screw in the first screw into the corresponding mounting hole, and use the second screw to assist in limiting to fix the sleeve. After the angle is adjusted, insert the puncture device into the sleeve for puncture. After the puncture is completed, screw the second screw to move the extrusion block downward to press the puncture device and fix the catheter. The PICC catheter main body is located inside the sleeve, which can effectively avoid pulling during use, enhance the stability of catheter placement, and ensure the smooth progress of the catheter placement process.

[0021] During PICC catheter placement, rotate the adjustment plate, and the coupling drives the turntable to squeeze and compress the torsion spring. Screw the fourth screw into the card hole to lock the turntable, and thread the PICC catheter through the winding shaft and the positioning sleeve. After the catheter placement is completed, loosen the fourth screw, and the torsion spring resets to drive the turntable to rotate, prompting the connecting plate to wind the circumferences of the upper and lower winding shafts to wind the excess PICC catheter. The two-sided torsion springs act synchronously for more efficient winding. When winding, the shaft rotates to assist in smooth winding. If adjustment is required, turn the adjustment handle, and the screw rod drives the movable plate to slide in the top rail through the movable block. Due to the thread characteristics of the screw rod, the distance between the two PICC catheter fixators can be stably adjusted to change the winding degree, avoid the tube body from being loose and dragged, and improve stability. Brief Description of the Drawings

[0022] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 It is a top-view structural schematic diagram of the present invention;

[0025] Figure 3 It is a bottom-view structural schematic diagram of the present invention;

[0026] Figure 4 It is a rear-view structural schematic diagram of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the mounting mechanism of the present invention;

[0028] Figure 6 It is a rear-view structural schematic diagram of the winding mechanism and the positioning mechanism of the present invention;

[0029] Figure 7 It is a front-view structural schematic diagram of the winding mechanism and the positioning mechanism of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the elastic component of the present invention.

[0031] [Reference Signs]

[0032] 1. Mounting frame; 2. Base

[0033] 3. Mounting mechanism; 31. Top seat; 32. Groove body; 33. Slide groove; 34. Slide plate; 35. Fixed arm; 36. Third screw; 37. Limiting arc plate; 38. Support rod

[0034] 4. Rewinding mechanism; 41. Connecting block; 42. Top rail; 43. Side plate

[0035] 44. Adjusting assembly; 441. Lead screw; 442. Adjusting handle; 443. Movable plate; 444. Movable block; 45. PICC catheter fixator; 451. Concave frame

[0036] 452. Elastic component; 4521. Fixed frame; 4522. Torsion spring; 4523. Turntable; 4524. Connecting shaft; 4525. Adjusting plate; 4526. Fourth screw; 4527. Clamping hole

[0037] 453. Connecting plate; 454. Rewinding rotating shaft

[0038] 5. Positioning mechanism; 51. Mounting arm; 52. Mounting disk; 53. Positioning sleeve; 54. Adjusting disk; 55. First screw; 56. Second screw; 57. Extrusion block; 58. Mounting hole; 59. Mounting plate

[0039] As shown in the figure, in order to clearly show the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed Embodiments

[0040] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0041] It should be noted that in the specification, the mention of "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicates that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe a specific feature, structure, or characteristic, implementing such feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0042] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that are not necessarily explicitly described.

[0043] It can be understood that the meanings of "on...", "above...", and "over..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0044] Furthermore, spatial relative terms such as "under...", "below...", "lower", "above...", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device other than the orientation depicted in the drawings. The device can be oriented in other ways, and the spatial relative descriptive terms used herein can be similarly interpreted accordingly.

[0045] As Figures 1 to 8 shown, an embodiment of the present invention provides a skin tensioning fixator for PICC catheterization, including two mounting brackets 1. A base 2 is fixedly installed in the middle of the tops of the two mounting brackets 1. A positioning mechanism 5 is installed on the top of the base 2. One side of the top of the positioning mechanism 5 is fixedly connected to a winding mechanism 4. Mounting mechanisms 3 are fixedly installed on both sides of the bottom of the base 2.

[0046] The positioning mechanism 5 includes a mounting arm 51 which is mounted on both sides of the top of the base 2. Between the inner sides of the upper ends of the mounting arms 51, a mounting disc 52 is fixedly installed. A positioning sleeve 53 is rotatably connected to the inner side of the mounting disc 52. A regulating disc 54 is rotatably connected to the outer side of one mounting disc 52. A first screw rod 55 is threadedly connected to the upper end of the regulating disc 54. The end of the first screw rod 55 penetrates through the regulating disc 54. The inner side of the regulating disc 54 is connected to one side of the positioning sleeve 53. The mounting mechanisms 3 on both sides of the bottom of the base 2 can conveniently fix the device in a suitable position. The positioning mechanism 5 on the top of the base 2 plays a key role. The mounting arms 51 stand on both sides of the top of the base 2. The mounting discs 52 on the inner sides of their upper ends stably support the positioning sleeve 53. The positioning sleeve 53 can rotate and adjust the angle according to the puncture requirements to meet different puncture angle requirements, accurately position, the regulating disc 54 is connected to the positioning sleeve 53. Rotating the regulating disc 54 can drive the positioning sleeve 53 to rotate. Then, by threadedly connecting the first screw rod 55 to the regulating disc 54 and screwing the first screw rod 55 into the corresponding position, the positioned sleeve 53 with the adjusted angle can be assisted to be fixed, providing a stable guarantee for the puncture operation, facilitating the smooth progress of PICC catheterization, and reducing the risk of operation errors. The winding mechanism 4 on one side of the top can also effectively wind and manage the excess PICC catheter to avoid the hidden dangers brought by the loose tube body.

[0047] As Figures 1 to 4 shown, a plurality of limiting holes are arranged at equal intervals in a circular arrangement on the outer side of the mounting disc 52 on the side with the regulating disc 54. The end of the first screw rod 55 is inserted into the inner side of the limiting hole. A second screw rod 56 is threadedly connected to the side of the top of the positioning sleeve 53 far away from the winding mechanism 4. The end of the second screw rod 56 penetrates through the positioning sleeve 53 and is rotatably connected to a pressing block 57. The side shape of the mounting frame 1 is L-shaped. Mounting plates 59 are fixedly installed on the outer sides of the mounting frame 1. Mounting holes 58 are opened at both ends of the mounting plate 59. The mounting holes 58 are set as counterbored holes. A plurality of limiting holes are arranged at equal intervals in a circular arrangement on the outer side of the mounting disc 52 on the side with the regulating disc 54, which cooperate with the end of the first screw rod 55. After rotating the regulating disc 54 to drive the positioning sleeve 53 to a suitable puncture angle, the first screw rod 55 is inserted into the limiting hole, which can accurately fix the angle of the sleeve, ensure the stability of the puncture positioning, and reduce the risk of angle deviation. The second screw rod 56 at the top of the positioning sleeve 53 is threadedly connected and penetrates through the sleeve to connect the pressing block 57. After the catheterization is completed, rotating the second screw rod 56 can make the pressing block 57 move downward to firmly fix the puncture device and the catheter to prevent displacement. The mounting frame 1 is L-shaped. Counterbored holes are opened at both ends of the outer mounting plate 59. During installation, the counterbored holes facilitate the installation of bolts, making the device fit more closely. The L-shaped structure provides reliable support for the whole, and the installation is convenient and stable.

[0048] As Figures 1 to 5As shown, the installation mechanism 3 includes a top seat 31 and a groove body 32. The top seat 31 is fixedly installed at the bottom of the base 2. The groove body 32 is opened in the middle of the base 2 and at the middle of the top of the top seat 31. The bottom of the groove body 32 penetrates through the top seat 31 and the base 2. Slide grooves 33 are opened on both sides of the top seat 31. A sliding plate 34 is slidably connected inside the slide grooves 33. A fixed arm 35 is fixedly connected to the outside of the sliding plate 34. A third screw rod 36 is threadedly connected to the bottom of the fixed arm 35. The top of the third screw rod 36 penetrates through the fixed arm 35 and is rotatably connected to a limiting arc plate 37. Support rods 38 are fixedly connected to both sides of the bottom of the limiting arc plate 37. The bottom of the support rods 38 penetrates through the fixed arm 35, and the support rods 38 are movably connected to the fixed arm 35. The top seat 31 is fixed to the bottom of the base 2, and the groove body 32 penetrates through the base 2 and the middle and top of the top seat 31, reserving space for subsequent operations. The slide grooves 33 on both sides of the top seat 31 and the sliding plates 34 sliding inside, combined with the fixed arms 35 on the outside, can flexibly adjust the position of the fixed arms 35 according to the situation of the patient's arm, meet different puncture requirements, accurately position the arm. The third screw rod 36 threadedly connected to the bottom of the fixed arm 35 drives the top limiting arc plate 37 to move when rotated. With the assistance of the support rods 38 for stability, the patient's arm can be firmly clamped between the limiting arc plate 37 and the top seat 31, ensuring the stability of the puncture site, reducing the risk of arm shaking, and guaranteeing the smooth progress of the puncture, laying a solid foundation for the PICC catheterization operation.

[0049] As Figures 6 to 8As shown, the winding mechanism 4 includes a connecting block 41, the connecting block 41 is fixedly connected to the front and rear ends of one side of the mounting arm 51, the top of the connecting block 41 is fixedly connected with a top rail 42, both ends between the inner sides of the two tops are fixedly connected with side plates 43, an adjusting assembly 44 is arranged inside the side plates 43, both sides of the bottom of the adjusting assembly 44 are fixedly connected with PICC catheter fixators 45, the adjusting assembly 44 includes a lead screw 441, the lead screw 441 is rotatably connected between the inner sides of the two side plates 43, the outer end of the lead screw 441 penetrates through the side plate 43 and is fixedly connected with an adjusting handle 442, the thread rotation directions at both ends of the lead screw 441 are opposite, both ends of the lead screw 441 are threadedly connected with movable plates 443, both ends of the movable plates 443 are fixedly connected with movable blocks 444, the movable blocks 444 are slidably connected inside the guide rails, the bottom of the movable plates 443 is connected to the top of the PICC catheter fixator 45. The connecting block 41 is fixed to the front and rear ends of one side of the mounting arm 51, and its top top rail 42 cooperates with the side plates 43 to provide a stable support structure for the winding-related components. The lead screw 441 in the adjusting assembly 44 is rotatably connected inside the side plates 43, and the outer adjusting handle 442 is convenient for operation. The key lies in that the thread rotation directions at both ends of the lead screw 441 are opposite. When the adjusting handle 442 is rotated to drive the lead screw 441 to rotate, it can drive the two movable plates 443 to move towards or away from each other. The movable plates 443 stably slide inside the guide rails through the movable blocks 444 at both ends, and the bottom is connected to the PICC catheter fixator 45. In this way, the distance between the two PICC catheter fixators 45 can be adjusted as needed, and the PICC catheter can be pulled flexibly. It can not only improve the winding degree and effectively store the excess tube body, but also reduce the winding degree as needed to adapt to different usage scenarios, avoid the tube body from being loose and dragged, and ensure the orderly progress of the PICC catheterization process.

[0050] As Figures 6 to 8As shown in the figure, the PICC catheter fixing device 45 includes a concave frame 451, the concave frame 451 is fixedly connected to the bottom of the movable plate 443, elastic components 452 are installed at both inner ends of the concave frame 451, connecting plates 453 are fixedly connected to the inner sides of the elastic components 452, winding rotating shafts 454 are rotatably connected to the upper and lower ends between the inner sides of the connecting plates 453. The elastic component 452 includes a fixed frame 4521, the fixed frame 4521 is fixedly installed on both sides of the bottom of the concave frame 451, a torsion spring 4522 is fixedly connected inside the fixed frame 4521, the inner end of the torsion spring 4522 is fixedly installed with a turntable 4523, the turntable 4523 is rotatably connected to the inner end of the fixed frame 4521, the inner side of the turntable 4523 is fixedly connected to the outer side of the connecting plate 453, a connecting shaft 4524 is fixedly connected to the outer side of the turntable 4523, the outer end of the connecting shaft 4524 penetrates through the fixed frame 4521 and is fixedly connected to an adjusting plate 4525, the connecting shaft 4524 is rotatably connected to the fixed frame 4521, the upper end of the outer side of the adjusting plate 4525 is threadedly connected with a fourth screw 4526, the end of the fourth screw 4526 penetrates through the adjusting plate 4525. The first screw 55, the second screw 56, the third screw 36 and the fourth screw 4526 are all set as hand-twist screws. A plurality of card holes 4527 are arranged at equal intervals in a circular pattern on the outer side of the fixed frame 4521. The end of the fourth screw 4526 penetrates through the adjusting plate 4525 and is inserted into the card holes 4527 inside. The concave frame 451 is firmly fixed to the bottom of the movable plate 443, building a solid foundation and carrying a series of key components inside. The elastic components 452 carefully arranged at both inner ends of the concave frame 451 are of great significance. Among them, the fixed frame 4521, as a basic component, is firmly fixed on both sides of the bottom of the concave frame 451, providing protection and support for the internal structure. The torsion spring 4522 fixed inside the fixed frame 4521 is closely connected to the turntable 4523. The inner side of the turntable 4523 is accurately butted against the connecting plate 453, and the outer connecting shaft 4524 reasonably penetrates through the fixed frame 4521 and is connected to the adjusting plate 4525. Such a structure forms an organic whole.

[0051] In the actual operation process, by rotating the adjusting plate 4525, the connecting shaft 4524 can be linked, promoting the smooth rotation of the turntable 4523, and then squeezing the torsion spring 4522. At this time, inserting the fourth screw 4526 into the card hole 4527 of the fixed frame 4521 to lock the turntable 4523 can quickly prepare the winding state. The PICC catheter can be conveniently inserted into the winding rotating shaft 454 between the connecting plates 453. The whole process is efficient and smooth. After the catheter placement is completed, loosen the fourth screw 4526 to disengage from the card hole 4527. At this time, the torsion spring 4522 instantly resets, powerfully driving the turntable 4523 and the winding rotating shaft 454 to rotate at high speed, efficiently winding the redundant tube body. Moreover, the two torsion springs 4522 exert force synchronously, and the winding effect is twice the result with half the effort.

[0052] In addition, the elastic component 452 also plays an important protective role. It can effectively buffer the accidental impact that may be exerted from the outside, and effectively protect the PICC catheter from damage. It is particularly worth mentioning that the first screw 55, the second screw 56, the third screw 36, and the fourth screw 4526 are all uniformly set as hand-tightening screws. This design greatly facilitates the operation of medical staff. Without the need for complex tools, various adjustments can be quickly completed at any time with only the strength of the hand, enabling each link of the PICC catheterization to be efficiently and orderly promoted, and ensuring the smooth progress of the entire catheterization process without hindrance.

[0053] The working process of the technical solution provided by the present invention is as follows:

[0054] During use, first use the mounting holes 58 on the mounting plate 59 to cooperate with bolts to install the device at the position to be used, such as an operating table or a hospital bed. Then, let the patient's arm extend into the top of the limiting arc plate 37 between the top seat 31 and the fixed arm 35, and rotate the third screw 36 to move the limiting arc plate 37 upward. The limiting arc plate 37 cooperates with the top seat 31 to clamp the patient's arm. During the fixing process, the position of the fixed arm 35 is adjusted by sliding the slide plate 34 in the sliding groove 33, and the arm is positioned according to the patient's puncture needs. Since there are two groups of fixed arms 35, the two ends of the puncture site of the patient's arm can be fixed, ensuring the stability of the puncture position. When fixing, the groove body 32 reserves a puncture catheterization space for the top of the arm. Silicone soft pads are added to the limiting arc plate 37 and the top seat 31, which can not only enhance the clamping stability but also make the patient comfortable. Before catheterization, the excess PICC catheter is placed in the winding mechanism 4. After the catheterization operation is completed, the winding mechanism 4 contracts to assist in tightening the PICC tube, preventing it from being loose, tangled, or accidentally dragged, ensuring stability after catheterization, and avoiding secondary injury.

[0055] By setting the positioning mechanism 5, during the catheterization operation of this device, the positioning mechanism 5 can be adjusted as needed. Rotate the positioning sleeve 53 inside the mounting disc 52 according to the puncture angle, push the adjustment disc 54 to rotate, drive the positioning sleeve 53 to rotate. After adjusting the angle, turn the first screw 55 and insert it into the corresponding mounting hole 58, and then use the second screw 56 for limiting to assist in fixing the positioning sleeve 53. After the angle of the sleeve is adjusted, insert the puncture device into it for puncture. After the puncture is completed, turn the second screw 56 to drive the extrusion block 57 to move downward to extrude the puncture device, so that the catheter can be fixed after the puncture catheterization is completed. The PICC catheter main body is located inside the positioning sleeve 53, which can be better positioned to prevent the PICC catheter from being pulled during use.

[0056] By setting up the rewinding mechanism 4, when using this device for PICC catheterization, rotate the adjusting plate 4525 to drive the coupling shaft 4524 to drive the turntable 4523 to rotate. The turntable 4523 squeezes the torsion spring 4522 to compress it, and then turn the fourth screw 4526 to insert it into the card hole 4527 to lock the turntable 4523. Then, pass the PICC catheter through between the two rewinding rotating shafts 454, and then through the positioning sleeve 53. After the catheterization is completed, turn the fourth screw 4526 to make it disengage from the card hole 4527. The torsion spring 4522 loses its limit and resets, driving the turntable 4523 to rotate within the fixed frame 4521. The turntable 4523 drives the rewinding rotating shafts 454 at the upper and lower ends of the connecting plate 453 to rotate circumferentially, and winds the excess PICC catheter on the outer surface of the rewinding rotating shaft 454. The four groups of torsion springs 4522 on both sides are reset synchronously, driving the rewinding rotating shafts 454 to rotate synchronously, effectively winding the excess PICC catheter C. During winding, the rewinding rotating shaft 454 rotates to assist in stable winding. If adjustment is required during use, turn the adjustment handle 442 to drive the lead screw 441 to drive the movable plate 443 to slide. The movable blocks 444 at both ends of the movable plate 443 rotate stably within the top rail 42. Since the thread directions at both ends of the lead screw 441 are opposite, the two movable plates 443 can be driven to move reciprocally to adjust the distance between the two PICC catheter fixators 45, pull or push them to the two sides or inwards to change the winding degree. This adjustable design improves the overall winding effect of the device, avoids the excess PICC catheter from being loose and dragged, and further improves the stability of PICC catheterization.

[0057] The present invention covers any substitutions, modifications, equivalent methods, and solutions made within the essence and scope of the present invention. To enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without these detailed descriptions. Additionally, to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0058] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A skin tensioning fixator for PICC catheterization, comprising two mounting brackets, characterized in that, A base is fixedly installed in the middle of the tops of the two mounting frames. A positioning mechanism is installed on the top of the base. One side of the top of the positioning mechanism is fixedly connected to a winding mechanism. Mounting mechanisms are fixedly installed on both sides of the bottom of the base; The positioning mechanism includes mounting arms. The mounting arms are installed on both sides of the top of the base. Mounting discs are fixedly installed between the inner sides of the upper ends of the mounting arms. A positioning sleeve is rotatably connected to the inner side of the mounting disc. A regulating disc is rotatably connected to the outer side of one mounting disc. A first screw rod is threadedly connected to the upper end of the regulating disc. The end of the first screw rod penetrates through the regulating disc. The inner side of the regulating disc is connected to one side of the positioning sleeve; A second screw rod is threadedly connected to the side of the top of the positioning sleeve away from the winding mechanism. The end of the second screw rod penetrates through the positioning sleeve and is rotatably connected to a pressing block; The mounting mechanism includes a top seat and a groove body. The top seat is fixedly installed at the bottom of the base. The groove body is opened in the middle of the base and the middle of the top of the top seat. The bottom of the groove body penetrates through the top seat and the base. Sliding grooves are opened on both sides of the top seat. A sliding plate is slidably connected inside the sliding grooves. A fixed arm is fixedly connected to the outer side of the sliding plate. A third screw rod is threadedly connected to the bottom of the fixed arm. The top of the third screw rod penetrates through the fixed arm and is rotatably connected to a limiting arc plate. Both sides of the bottom of the limiting arc plate are fixedly connected with support rods. The support rods penetrate through the fixed arm at the bottom. The support rods are movably connected to the fixed arm; The winding mechanism includes a connecting block. The connecting block is fixedly connected to the front and rear ends of one side of the mounting arm. A top rail is fixedly connected to the top of the connecting block. Side plates are fixedly connected to both ends between the inner sides of the two tops. An adjusting component is arranged inside the side plates. PICC catheter fixators are fixedly connected to both sides of the bottom of the adjusting component; The PICC catheter fixator includes a concave frame. The concave frame is fixedly connected to the bottom of the movable plate. Elastic components are installed at both ends inside the concave frame. Connecting plates are fixedly connected to the inner sides of the elastic components. Winding rotating shafts are rotatably connected to the upper and lower ends between the inner sides of the connecting plates; The elastic component includes a fixed frame. The fixed frame is fixedly installed on both sides of the bottom of the concave frame. A torsion spring is fixedly connected inside the fixed frame. The inner end of the torsion spring is fixedly installed with a turntable. The turntable is rotatably connected to the inner end of the fixed frame. The inner side of the turntable is fixedly connected to the outer side of the connecting plate. A connecting shaft is fixedly connected to the outer side of the turntable. The outer end of the connecting shaft penetrates through the fixed frame and is fixedly connected to an adjusting plate. The connecting shaft is rotatably connected to the fixed frame. A fourth screw rod is threadedly connected to the upper end of the outer side of the adjusting plate. The end of the fourth screw rod penetrates through the adjusting plate.

2. The skin tensioning and fixing device for PICC catheterization according to claim 1, wherein Limit holes are arranged in an equidistant circular arrangement on the outer side of the mounting disc on the side with the regulating disc. The end of the first screw rod is inserted inside the limit holes.

3. The skin tensioning fixator for PICC catheterization according to claim 2, characterized in that, The side shape of the mounting frame is set to be L-shaped. Mounting plates are fixedly installed on the outer sides of the mounting frames. Mounting holes are opened at both ends of the mounting plates. The mounting holes are set as countersunk holes.

4. The skin tensioning and fixing device for PICC catheterization according to claim 3, wherein The adjusting assembly includes a lead screw, the lead screw is rotatably connected between the inner sides of two side plates, the outer end of the lead screw penetrates through the side plate and is fixedly connected with an adjusting handle, the thread directions of the two ends of the lead screw are opposite, both ends of the lead screw are threadedly connected with movable plates, both ends of the movable plate are fixedly connected with movable blocks, the movable blocks are slidably connected inside the guide rails, and the bottom of the movable plate is connected to the top of the PICC catheter fixator.

5. The skin tensioning and fixing device for PICC catheterization according to claim 4, characterized in that, The first screw rod, the second screw rod, the third screw rod and the fourth screw rod are all set as hand-tightening screw rods, a plurality of card holes are arranged at equal intervals in a circular arrangement on the outer side of the fixed frame, and the end of the fourth screw rod penetrates through the adjusting plate and is inserted into the inside of the card holes.

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