An ultrasound-guided vascular puncture and catheterization system

Abstract

An ultrasound-guided vascular puncture and catheterization system is disclosed. This relates to the field of arterial and venous puncture and catheterization. Existing ultrasound puncture frames often employ a cannula-guided design, which only assists puncture and cannot facilitate rapid catheter placement. Their angle adjustment range is relatively fixed. Therefore, this invention provides an ultrasound-guided vascular puncture and catheterization system based on an exoskeleton guide rail. This invention includes a tail-end fixing seat, guide rails, a puncture frame body, a needle holder slider, and an imaging fine-tuning device. The tail-end fixing seat is fixedly connected to the tail ends of two guide rails. A needle holder slider is installed between the two guide rails and slides along the direction of the rails. The heads of the two guide rails have a bent structure, and the bent portion of the guide rail head is inserted into a socket in the imaging fine-tuning device. The imaging fine-tuning device is fixedly connected to the lower part of the puncture frame body. This invention is applied in the field of ultrasound-guided vascular puncture and catheterization.

Description

Technical Field

[0001] This utility model relates to the field of arterial and venous puncture and catheterization, and specifically to an ultrasound-guided vascular puncture and catheterization system. Background Technology

[0002] Arterial and venous puncture techniques are commonly used in clinical practice. Arterial puncture is mainly suitable for intraoperative and postoperative monitoring of patients in shock, severe illness, severe peripheral vasoconstriction, those undergoing major or life-threatening surgery, and other high-risk patients. Venous puncture is mainly used for routine blood tests and volume therapy. In recent years, the proportion of critically ill patients and complex surgeries has been increasing year by year. Drastic drops or rises in blood pressure during surgery can cause adverse cardiovascular and cerebrovascular events. Arterial puncture can achieve invasive blood pressure monitoring, providing continuous, dynamic, direct, and accurate arterial pressure monitoring data, greatly reducing the incidence of adverse events. It is considered an essential item in anesthesia monitoring for high-risk patients, significantly improving the safety and quality of clinical anesthesia. For cancer patients requiring chemotherapy or renal failure patients on dialysis, central venous catheterization provides a convenient long-term, large-diameter infusion route. In the resuscitation of critically ill patients, deep vein puncture can quickly establish an effective infusion channel, buying valuable time for rescue.

[0003] However, these critically ill patients often present difficulties with arterial and venous punctures, mostly due to the invisibility and uncertainty of the vascular system. Arterial puncture requires the operator to identify a pulsating artery by applying pressure and then blindly puncture, judging the success of the puncture based on the presence of arterial blood return. In obese or edematous patients, the arterial pulsation is not easily identified by pressure; in patients with atrial fibrillation or other types of arrhythmias, the arterial pulsation is irregular and uneven in strength; in patients with massive bleeding from severe trauma or dehydration due to prolonged vomiting and diarrhea, the arterial pulsation is rapid and weak due to severe hypovolemia, all of which greatly complicate arterial puncture. Furthermore, in the field of venous puncture, the blood vessels of newborns or very young children are extremely small, especially in premature infants and low-birth-weight infants, making veins even more difficult to locate, which poses a significant challenge to venous puncture. At the same time, the skin of newborns is very thin and delicate, and the blood vessels are superficial, making them extremely easy to damage during puncture, leading to puncture failure.

[0004] The difficulty in puncturing these blood vessels undoubtedly increases the risk of complications such as vasospasm, bleeding, hematoma, and infection due to repeated failed punctures, and can also lead to numerous doctor-patient conflicts. Improving the success rate of punctures in these patients necessitates the use of experienced medical personnel. However, my country faces a shortage of 2 million medical professionals, and training a highly qualified medical professional takes at least six years.

[0005] With the continuous maturation of ultrasound-guided puncture technology, ultrasound-guided vascular puncture can effectively reduce complications and improve the success rate. Currently, the design and application of traditional ultrasound puncture frames are based on the imaging angle of the puncture needle, but they are widely criticized for their fixed needle insertion angle, inability to place catheters, and lack of automated puncture capabilities. Utility Model Content

[0006] In order to address the problem that existing structures mostly use cannula-guided designs, which can only assist puncture but cannot quickly place the cannula, and whose angle adjustment range is relatively fixed, this invention provides an ultrasound-guided vascular puncture and cannulation system.

[0007] The technical solution of this utility model is:

[0008] An ultrasound-guided vascular puncture and catheterization system, comprising a tail-end fixation base, a guide rail, a puncture frame body, a needle holder slider, and an imaging fine-tuning device;

[0009] The tail end fixing seat is fixedly connected to the tail ends of the two guide rails. The two guide rails are parallel to each other, and a needle support slider is installed between the two guide rails. The needle support slider slides along the direction of the two guide rails. The heads of the two guide rails are bent. The bent head of the guide rail is inserted into the socket in the imaging fine adjustment device. The two guide rails rotate on the imaging fine adjustment device, which is fixedly connected to the lower part of the puncture frame body.

[0010] Furthermore, the tail end fixing seat is an arched structure that is thick at both ends and thin in the middle, and the tail end fixing seat is symmetrically provided with insertion holes for inserting the tail end of the guide rail. When the tail end fixing seat rotates through the guide rail, it drives the tail end fixing seat to move synchronously.

[0011] Furthermore, the guide rail is a smooth and independent guide rail, and the tail end fixing seat, needle support slider and imaging fine adjustment device are connected through two guide rails.

[0012] Furthermore, the main body of the puncture frame is rectangular in shape, and the main body of the puncture frame is detachably connected to the head of the ultrasound probe. The ultrasound-guided vascular puncture and catheterization system is connected to the ultrasound probe through the main body of the puncture frame, and the ultrasound-guided vascular puncture and catheterization system is located on one side of the ultrasound probe.

[0013] Furthermore, the main body of the puncture frame includes a U-shaped frame, a locking frame, and locking bolts;

[0014] The U-shaped frame and the locking frame are rotatably connected by a rotating shaft. The mating parts of the U-shaped frame and the locking frame are respectively provided with threaded holes, and the locking bolts pass through the threaded holes of the U-shaped frame and the locking frame respectively, and the U-shaped frame and the locking frame are fixedly connected by the locking bolts.

[0015] Furthermore, the needle holder slider has a sliding hole, and the sliding hole on the needle holder slider is inserted into the guide rail, so that the needle holder slider slides along the two guide rails.

[0016] Furthermore, the lower part of the needle holder slider has a notch structure, and the notch structure fixes the tail of the disposable puncture needle to the needle holder slider by snapping it in.

[0017] Furthermore, the imaging fine-tuning device includes a fine-tuning frame, an imaging fine-tuning knob, and a needle fine-tuning pressure block;

[0018] The fine-tuning frame is connected to the needle body fine-tuning block via an imaging fine-tuning knob. The imaging fine-tuning knob is connected to one side of the needle body fine-tuning block, and when the imaging fine-tuning knob is rotated, it drives the needle body fine-tuning block to rotate synchronously.

[0019] Furthermore, one side of the fine-tuning frame has a groove for installing a hexagonal nut, and the imaging fine-tuning knob is screwed into the hexagonal nut. The end of the imaging fine-tuning knob is connected to the needle body fine-tuning pressure block.

[0020] Furthermore, the lower part of the needle body fine-tuning block has a sloping structure, and the needle body of the disposable puncture needle is set at the sloping surface of the needle body fine-tuning block.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] This invention allows for accurate positioning and a wide range of adjustable needle insertion angles. Real-time imaging dynamically tracks the entire process of puncture into the target blood vessel, minimizing the risk of damage to adjacent tissues. It specifically addresses the difficulties in arterial and venous puncture in target groups such as obese individuals, those with collapsed blood vessels, and newborns.

[0023] This invention enables rapid catheter placement, solving the problem that traditional ultrasonic puncture stents can only assist in puncture but cannot complete the catheter placement procedure. It is low-cost, simple and quick to operate, causes minimal trauma to patients, and helps reduce the pain associated with the procedure.

[0024] This invention enables experienced anesthesiologists or medical students to perform punctures and place catheters using ultrasound imaging. This ensures a high success rate, reduces the risk of needlestick infections for medical staff, and maintains high efficiency.

[0025] This invention mainly consists of a tail-end fixing seat, a guide rail, a puncture frame body, a needle holder slider, and an imaging fine-tuning device, which can be selected according to different puncture sites and purposes. Compared with dedicated puncture probes, the disposable ultrasonic probe puncture frame, as an accessory to conventional probes, has a lower procurement cost. Compared with manual puncture, this invention, guided by the disposable ultrasonic probe puncture frame, allows the puncture needle to travel along the guide line set by the ultrasonic equipment, and can be observed through an ultrasonic monitor, enabling precise attainment of the puncture target.

[0026] This utility model features a flexible design to meet various clinical needs. The disposable ultrasound probe puncture holder is freely adjustable to multiple angles, offering adjustable puncture angles and depths to accommodate punctures at different sites and angles. Simultaneously, it accommodates puncture needles of different sizes, providing a stable support platform that allows the ultrasound probe to accurately position and guide the puncture procedure. It can also fix the ultrasound probe in place, preventing movement or shaking during the puncture process, thus improving the accuracy and safety of the puncture. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is the utility model Figure 1 A schematic diagram of the structure from the second angle in the middle;

[0029] Figure 3 This is the utility model Figure 1 A structural diagram from the third angle;

[0030] Figure 4 This is a schematic diagram of the structure of this utility model when a disposable puncture needle is installed;

[0031] Figure 5 yes Figure 4 A bottom view;

[0032] Figure 6 This is a schematic diagram of the installation structure of the present invention and the ultrasonic probe;

[0033] Figure 7 This is a schematic diagram of the imaging fine-tuning device of this utility model without the fine-tuning frame installed;

[0034] Figure 8 This is a structural schematic diagram of the main body of the puncture frame;

[0035] Figure 9 This is a schematic diagram of the structure of a disposable puncture needle;

[0036] In the diagram: 1. Tail end fixing seat, 2. Guide rail, 3. Puncture frame body, 4. Needle holder slider, 5. Imaging fine adjustment device, 6. Ultrasonic probe, 7. Disposable puncture needle, 31. U-shaped frame, 32. Locking frame, 33. Locking bolt, 51. Fine adjustment frame, 52. Imaging fine adjustment knob, 53. Needle body fine adjustment pressure block, 54. Groove. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0038] Specific implementation method one: Combining Figure 1 — Figure 7 This embodiment describes an ultrasound-guided vascular puncture and catheterization system, which includes a tail-end fixation seat 1, a guide rail 2, a puncture frame body 3, a needle holder slider 4, and an imaging fine-tuning device 5.

[0039] The tail end fixing seat 1 is fixedly connected to the tail ends of the two guide rails 2. The two guide rails 2 are parallel to each other, and a needle support slider 4 is installed between the two guide rails 2. The needle support slider 4 slides along the direction of the two guide rails 2. The heads of the two guide rails 2 are bent. The bent head of the guide rail 2 is inserted into the socket in the imaging fine adjustment device 5. The two guide rails 2 rotate on the imaging fine adjustment device 5. The imaging fine adjustment device 5 is fixedly connected to the lower part of the puncture frame body 3.

[0040] In the ultrasound-guided vascular puncture and catheterization system, the disposable puncture needle 7 is always centered with the ultrasound probe 6. The disposable puncture needle 7 is inserted along the plane of the centered position of the ultrasound probe 6.

[0041] Ultrasound-guided vascular puncture and catheterization systems can be categorized into reusable puncture frames and disposable puncture frames based on their usage. This novel system uses a disposable puncture frame. By mounting a puncture frame on an ultrasound probe, the ultrasound-guided vascular puncture and catheterization system allows the puncture needle to be guided to the target location on the body under ultrasound guidance, enabling intravenous catheterization (for routine fluid resuscitation, rapid resuscitation, and repeated drug administration) and arterial catheterization (for intraoperative / ICU blood pressure monitoring and interventional cardiovascular procedures).

[0042] Specific Implementation Method Two: Combining Figure 1 — Figure 7This embodiment describes an ultrasound-guided vascular puncture and catheterization system. The tail end fixation seat 1 is an arched structure that is thick at both ends and thin in the middle. Symmetrical insertion holes for inserting the tail end of the guide rail 2 are provided on the tail end fixation seat 1. When the guide rail 2 rotates, the tail end fixation seat 1 moves synchronously.

[0043] Disposable ultrasound probe puncture holders allow for ultrasound-guided puncture procedures, offering advantages such as simplicity, convenience, and safety. The ultrasound-guided vascular puncture and catheterization system is made of plastic, providing good rigidity and stability to ensure accuracy and safety during the procedure. The puncture needle, used to puncture the patient's skin and tissue, is typically made of stainless steel with a sharp tip and smooth surface to minimize injury. The puncture catheter, used to guide the puncture needle to the target site, is usually made of flexible plastic with good flexibility and guidance, reducing resistance and error during puncture.

[0044] Specific implementation method three: Combining Figure 1 — Figure 7 This embodiment describes an ultrasound-guided vascular puncture and catheter placement system. The guide rail 2 is a smooth and independent guide rail 2. The tail end fixing seat 1, the needle support slider 4, and the imaging fine-tuning device 5 are connected through two guide rails 2.

[0045] The main function of an ultrasound-guided vascular puncture and catheterization system is to provide a stable support platform, enabling the ultrasound probe to accurately position and guide the puncture procedure. Simultaneously, it can also fix the ultrasound probe, preventing movement or shaking during the puncture process, thus improving the accuracy and safety of the procedure.

[0046] Specific implementation method four: Combination Figure 1 — Figure 7 This embodiment describes an ultrasound-guided vascular puncture and catheterization system. The puncture frame body 3 is generally rectangular in structure. The puncture frame body 3 is detachably connected to the head of the ultrasound probe 6. The ultrasound-guided vascular puncture and catheterization system is connected to the ultrasound probe 6 through the puncture frame body 3. The ultrasound-guided vascular puncture and catheterization system is located on one side of the ultrasound probe 6.

[0047] Specific Implementation Method Five: Combining Figure 7 This embodiment describes an ultrasound-guided vascular puncture and catheterization system, wherein the puncture frame body 3 includes a U-shaped frame 31, a locking frame 32, and a locking bolt 33;

[0048] The U-shaped frame 31 and the locking frame 32 are rotatably connected by a rotating shaft. The mating parts of the U-shaped frame 31 and the locking frame 32 are respectively provided with threaded holes, and the locking bolts 33 pass through the threaded holes of the U-shaped frame 31 and the locking frame 32 respectively, and the U-shaped frame 31 and the locking frame 32 are fixedly connected by the locking bolts 33.

[0049] The aforementioned structure allows for rapid installation and disassembly of the device. Its single-use nature effectively avoids the risk of cross-infection and improves the safety of medical procedures. In summary, the single-use ultrasound-guided vascular puncture and catheterization system is an important auxiliary tool in medical imaging instruments, primarily used for ultrasound-guided puncture procedures. It provides stable support, accurate positioning, and safety and reliability. Its ease of use enhances the accuracy and safety of puncture procedures.

[0050] Specific Implementation Method Six: Combination Figure 7 This embodiment describes an ultrasound-guided vascular puncture and catheterization system. The needle support slider 4 has a sliding hole, which is inserted into the guide rail 2, allowing the needle support slider 4 to slide along the two guide rails 2.

[0051] As the guide rail 2 rotates, the adjustable puncture angle and depth of the needle holder slider 4 can accommodate puncture needs at different locations and angles. The method of use is relatively simple: the doctor simply inserts the ultrasound probe into the fixed groove of the needle holder slider, adjusts the angle and depth to position it, and then performs the puncture.

[0052] Specific implementation method seven: Combination Figure 7 This embodiment describes an ultrasound-guided vascular puncture and catheterization system. The needle holder slider 4 has a notch structure at its bottom, and the notch structure fixes the tail of the disposable puncture needle 7 to the needle holder slider 4 by snapping it in.

[0053] Specific implementation method eight: Combination Figure 8 This embodiment describes an ultrasound-guided vascular puncture and catheterization system, wherein the imaging fine-tuning device 5 includes a fine-tuning frame 51, an imaging fine-tuning knob 52, and a needle body fine-tuning pressure block 53.

[0054] The fine-tuning frame 51 is connected to the needle body fine-tuning block 53 via the imaging fine-tuning knob 52. The imaging fine-tuning knob 52 is connected to one side of the needle body fine-tuning block 53. When the imaging fine-tuning knob 52 rotates, it drives the needle body fine-tuning block 53 to rotate synchronously.

[0055] The combined use of the imaging fine-tuning knob 52 and the needle body fine-tuning block 53 ensures that probes of different sizes or in different positions can be finely adjusted, ensuring that the disposable puncture needle 7 always travels in the center of the ultrasound probe 6, and that imaging is fully observed in the ultrasound image.

[0056] Specific Implementation Method Nine: Combining Figure 8 This embodiment describes an ultrasound-guided vascular puncture and catheter placement system. One side of the fine-tuning frame 51 has a groove 54 for installing a hexagonal nut. An imaging fine-tuning knob 52 is screwed into the hexagonal nut, and the end of the imaging fine-tuning knob 52 is connected to the needle body fine-tuning pressure block 53.

[0057] The needle body fine adjustment block 53 has a sloping structure below it, and the needle body of the disposable puncture needle 7 is set at the sloping surface of the needle body fine adjustment block 53.

[0058] How to use:

[0059] (1) Select the appropriate model: Select the appropriate puncture frame model to ensure that it matches the ultrasound probe in order to ensure the accuracy and safety of the operation.

[0060] (2) Pre-operation inspection: Before use, check whether the puncture frame is intact. If it is damaged or deformed, it should be replaced immediately to avoid affecting the operation effect.

[0061] (3) Familiarize yourself with the equipment before operation: When operating, follow the instructions for use of the medical device and be familiar with the usage methods and operating procedures of the equipment.

[0062] (4) Puncture location selection: When performing puncture, the appropriate puncture location should be selected according to the ultrasound imaging results to avoid damage to important tissues or organs.

[0063] (5) Puncture angle control: The choice of puncture angle is crucial to the success of the puncture operation and should be adjusted reasonably according to the ultrasound imaging results and the needs of the operation.

[0064] (6) Pay attention to the puncture depth: When performing puncture, the puncture depth should be controlled according to the ultrasound imaging results and the patient's condition to avoid damaging deep tissues or organs.

[0065] (7) Gentle operation: When performing puncture, the operation should be gentle and avoid excessive force or rapid movement to avoid causing unnecessary harm to the patient.

[0066] (8) Observation and recording: During the puncture procedure, the ultrasound imaging results and the patient's reaction should be closely observed, and relevant information should be recorded in a timely manner for subsequent analysis and processing.

[0067] (9) Prevent cross-infection: After the operation is completed, the puncture frame should be discarded in time and should not be reused to prevent cross-infection and equipment damage.

[0068] (10) Handling of abnormal situations: If any abnormal situation is found during use, use should be stopped immediately and the relevant professionals should be notified and dealt with in a timely manner.

[0069] Specific Implementation Method Ten: Combining Figure 1 — Figure 9 This embodiment describes an ultrasound-guided vascular puncture and catheterization system.

[0070] Working principle:

[0071] The ultrasound-guided vascular puncture and catheterization system is an auxiliary tool for puncture operations. It is mainly used for venous puncture and catheterization under ultrasound imaging. The ultrasound-guided vascular puncture and catheterization system is fixed to the ultrasound probe 6 via the puncture frame body 3. The tail of the disposable puncture needle 7 is inserted into the slot of the needle holder slider 4, and then fine-tuned using the imaging fine-tuning knob 52 to ensure that the disposable puncture needle 7 always travels in the center of the ultrasound probe 6, allowing for full visualization in the ultrasound image. Then, the patient's blood vessel is searched in this area. After finding a good vascular profile, the guide rail 2 is rotatably connected to the puncture frame body 3, thereby adjusting the needle holder slider 4 on the guide rail 2. The angle of the disposable puncture needle 7 on the needle holder slider 4 is adjusted using the above structure. After the angle is adjusted, the needle is pushed forward using the needle holder slider 4 on the guide rail 2. When bleeding occurs during needle advancement, the needle is flattened and advanced a short distance to separate the disposable puncture needle 7 from the needle holder slider 4. The needle is then withdrawn, and the cannula is inserted. The above structure allows for accurate positioning and a wide range of adjustment of the needle insertion angle, while also enabling rapid cannula placement.

[0072] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model's technical solution. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present utility model's technical solution, based on the technical essence of the present utility model and within the spirit and principles of the present utility model, shall still fall within the protection scope of the present utility model's technical solution.

Claims

1. An ultrasound-guided vascular puncture and catheterization system, characterized in that, The ultrasound-guided vascular puncture and catheterization system includes a tail-end fixation seat (1), a guide rail (2), a puncture frame body (3), a needle holder slider (4), and an imaging fine-tuning device (5). The tail end fixing seat (1) is fixedly connected to the tail ends of the two guide rails (2). The two guide rails (2) are parallel to each other, and a needle support slider (4) is installed between the two guide rails (2). The needle support slider (4) slides between the two guide rails (2) along the direction of the rail. The heads of the two guide rails (2) are bent. The bent head of the guide rail (2) is inserted into the socket in the imaging fine adjustment device (5). The two guide rails (2) rotate on the imaging fine adjustment device (5). The imaging fine adjustment device (5) is fixedly connected to the lower part of the puncture frame body (3).

2. The ultrasound-guided vascular puncture and catheterization system according to claim 1, characterized in that, The tail end fixing seat (1) is an arched structure that is thick at both ends and thin in the middle. The tail end fixing seat (1) is symmetrically provided with insertion holes for inserting the tail of the guide rail (2). When the tail end fixing seat (1) rotates through the guide rail (2), it drives the tail end fixing seat (1) to move synchronously.

3. The ultrasound-guided vascular puncture and catheterization system according to claim 2, characterized in that, The guide rail (2) is a smooth and independent guide rail (2), and the tail end fixing seat (1), the needle holder slider (4) and the imaging fine adjustment device (5) are connected through two guide rails (2).

4. The ultrasound-guided vascular puncture and catheterization system according to claim 2, characterized in that, The puncture frame body (3) is rectangular in shape. The head of the puncture frame body (3) and the ultrasound probe (6) are detachably connected. The ultrasound-guided vascular puncture and catheterization system is connected to the ultrasound probe (6) through the puncture frame body (3). The ultrasound-guided vascular puncture and catheterization system is set on one side of the ultrasound probe (6).

5. The ultrasound-guided vascular puncture and catheterization system according to claim 4, characterized in that, The main body (3) of the puncture frame includes a U-shaped frame (31), a locking frame (32) and a locking bolt (33); The U-shaped frame (31) and the locking frame (32) are rotatably connected by a rotating shaft. The mating parts of the U-shaped frame (31) and the locking frame (32) are respectively provided with threaded holes, and the locking bolts (33) pass through the threaded holes of the U-shaped frame (31) and the locking frame (32) respectively, and the U-shaped frame (31) and the locking frame (32) are fixedly connected by the locking bolts (33).

6. The ultrasound-guided vascular puncture and catheterization system according to claim 3, characterized in that, The needle holder slider (4) has a sliding hole, and the sliding hole on the needle holder slider (4) is inserted into the guide rail (2), so that the needle holder slider (4) slides along the two guide rails (2).

7. The ultrasound-guided vascular puncture and catheterization system according to claim 6, characterized in that, The needle holder slider (4) has a notch structure at the bottom, and the notch structure fixes the tail of the disposable puncture needle (7) to the needle holder slider (4) by snapping it in.

8. The ultrasound-guided vascular puncture and catheterization system according to claim 5, characterized in that, The imaging fine-tuning device (5) includes a fine-tuning frame (51), an imaging fine-tuning knob (52), and a needle fine-tuning pressure block (53); The fine-tuning frame (51) is connected to the needle body fine-tuning block (53) via the imaging fine-tuning knob (52). The imaging fine-tuning knob (52) is connected to one side of the needle body fine-tuning block (53). When the imaging fine-tuning knob (52) rotates, it drives the needle body fine-tuning block (53) to rotate synchronously.

9. The ultrasound-guided vascular puncture and catheterization system according to claim 8, characterized in that, The fine-tuning frame (51) has a groove (54) for installing a hexagonal nut on one side. The imaging fine-tuning knob (52) is screwed into the hexagonal nut, and the end of the imaging fine-tuning knob (52) is connected to the needle body fine-tuning pressure block (53).

10. The ultrasound-guided vascular puncture and catheterization system according to claim 9, characterized in that, The needle body fine adjustment block (53) has a sloping structure below it, and the needle body of the disposable puncture needle (7) is set at the sloping surface of the needle body fine adjustment block (53).

Images