Ultrasonic guiding device for indwelling needle puncture
By utilizing the rotating shaft and threaded rod structure of the ultrasonic probe and placement plate, precise angle adjustment and stable positioning of the indwelling needle are achieved, solving the problem of insufficient accuracy and stability in angle adjustment of existing devices, and improving the success rate and safety of puncture.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CENT HOSPITAL OF MINHANG DISTRICT SHANGHAI
- Filing Date
- 2025-02-10
- Publication Date
- 2026-05-15
AI Technical Summary
Existing ultrasound-guided devices for indwelling needle puncture lack precision and stability during angle adjustment, are cumbersome to operate and difficult to adjust, and require a long time for precise operation.
The device employs a rotating shaft and threaded rod structure that connects the ultrasonic probe to the placement plate. The angle adjustment and fixation of the indwelling needle are achieved through the cooperation of the trapezoidal push plate and the locking block driven by the handwheel. The cooperation between the threaded rod and the rotating shaft ensures the precise movement and positioning of the clamp, while the guide post and limiting components prevent deviation.
It improves the accuracy and safety of the puncture process, reduces human error, enhances the stability and efficiency of the operation, and ensures the precise placement and angle control of the indwelling needle.
Smart Images
Figure CN224235496U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to an ultrasound-guided device for indwelling needle puncture. Background Technology
[0002] With advancements in medical technology, ultrasound guidance has become widely used in various medical procedures, especially in highly precise procedures such as intravenous puncture and indwelling needle insertion. Ultrasound guidance provides real-time visual imaging, greatly improving the accuracy and success rate of punctures. However, in practice, precisely adjusting the angle of the indwelling needle to ensure a smooth puncture process remains a crucial issue.
[0003] Traditional indwelling needle punctures, when assisted by ultrasound guidance, can significantly improve the success rate and reduce complications. First, the operator needs to align the ultrasound guidance device with the puncture area and adjust the ultrasound probe position appropriately to clearly display the blood vessels and tissue structures. Next, the user observes the needle's insertion direction and depth in real time through the ultrasound screen to ensure accurate entry into the target blood vessel. Throughout the process, ultrasound guidance helps determine the needle position, avoids damage to surrounding tissues, and improves the safety and accuracy of the puncture procedure. Ultrasound guidance is particularly suitable for challenging punctures, such as peripheral vascular punctures and central venous punctures, and is especially effective for obese patients and those with deeply entrenched blood vessels.
[0004] Most existing ultrasound-guided devices for indwelling needle puncture rely on manual adjustment to control the position and angle of the indwelling needle. However, the angle adjustment process often lacks precision and stability, and has drawbacks such as cumbersome operation and difficulty in adjustment, requiring a long time for fine operation. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an ultrasonic guidance device for indwelling needle puncture, which aims to improve the existing ultrasonic guidance devices for indwelling needle puncture. These devices often lack precision and stability during angle adjustment and have drawbacks such as cumbersome operation, difficulty in adjustment, and the need for a long time for precise operation.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an ultrasonic guiding device for indwelling needle puncture, comprising an ultrasonic probe, a placement plate fixedly connected to one side of the outer wall of the ultrasonic probe, a rotating shaft rotatably connected inside the placement plate, a clamp fixedly connected to one end of the rotating shaft, an indwelling needle disposed on one side of the outer wall of the clamp, a threaded rod rotatably connected inside the rotating shaft, a handwheel fixedly connected to one end of the threaded rod, a reset assembly disposed inside the rotating shaft, and a fixing assembly disposed on the outer wall of the threaded rod, the fixing assembly being used to fix the rotating shaft after rotation;
[0007] The fixing component includes a trapezoidal push plate, the inner thread of which is connected to the outer wall of the threaded rod, and a locking block is slidably connected to the outer wall of the trapezoidal push plate, the outer wall of which is slidably connected to the inside of the rotating shaft.
[0008] Furthermore, the reset assembly includes a telescopic rod, one end of which is fixedly connected to the interior of the rotating shaft, and the other end of which is fixedly connected to the interior of the locking block. A spring is sleeved on the outer wall of the telescopic rod.
[0009] Furthermore, a second rotating shaft is fixedly connected to one side of the inner side of the storage plate, and a second threaded rod is threadedly connected to the inner side of the second rotating shaft. A handle is fixedly connected to one end of the second threaded rod, and a connecting block is rotatably connected to the other end of the second threaded rod. The connecting block is fixedly connected to one side of the outer wall of the clamp. A limit component is provided on the outer wall of the clamp to limit the displacement of the clamp. A ball bearing is rotatably connected inside the clamp.
[0010] Furthermore, the limiting component includes a guide post, one end of which is fixedly connected to the outer wall of the clamp, and the other end of which is fixedly connected to a limiting plate. A groove is provided on one side of the inner side of the placement plate.
[0011] Furthermore, the outer wall of the trapezoidal push plate is slidably connected to the inside of the rotating shaft, and the trapezoidal push plate is used to push the card block to move.
[0012] Furthermore, one end of the spring is fixedly connected to the inside of the locking block, and the other end of the spring is fixedly connected to the inside of the rotating shaft.
[0013] Furthermore, the outer wall of the guide post is slidably connected to the inside of the groove, and the groove is used to limit the guide post.
[0014] Furthermore, the limiting plate is disposed on one side of the outer wall of the shelf, and the limiting plate is used to limit the guide post.
[0015] This utility model has the following beneficial effects:
[0016] 1. In this utility model, the trapezoidal push plate moves linearly through the drive of the handwheel, allowing the locking block to separate from the rotating shaft and be released from fixation. This allows the rotating shaft to rotate freely, driving the clamp and indwelling needle to adjust their angles. After the angle is adjusted, the locking block is repositioned inside the rotating shaft and fixed by rotating the handwheel in the opposite direction. The operation is simple, ensuring that the puncture angle is precise and controllable, improving the accuracy during the puncture process, avoiding the risks caused by improper angle adjustment, and further improving the success rate of puncture and patient safety.
[0017] 2. In this utility model, the movement of the clamp can be precisely controlled by the cooperation of the threaded rod and the rotating shaft, so that the placement plate can be stably clamped between the two clamps for accurate positioning. The limiting effect of the guide post effectively ensures the precise movement of the clamp, avoids unnecessary deviation, ensures the accurate placement of the indwelling needle, greatly improves the stability and safety of operation, makes the positioning process simpler, reduces human error, and improves the operating efficiency and accuracy of the equipment. Attached Figure Description
[0018] Figure 1 This is a three-dimensional structural diagram of an ultrasound-guided device for indwelling needle puncture proposed in this utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of the placement plate of an ultrasonic guiding device for indwelling needle puncture proposed in this utility model;
[0020] Figure 3 This is a schematic diagram of the internal structure of the rotating shaft of an ultrasonic guiding device for indwelling needle puncture proposed in this utility model;
[0021] Figure 4 This is a schematic diagram of one side of the indwelling needle structure of an ultrasonic guidance device for indwelling needle puncture proposed in this utility model;
[0022] Figure 5 This is a schematic diagram of the inner part of the placement plate of an ultrasonic guiding device for indwelling needle puncture proposed in this utility model;
[0023] Figure 6 This is a schematic diagram of the internal structure of the rotating shaft of an ultrasonic guidance device for indwelling needle puncture proposed in this utility model.
[0024] Legend:
[0025] 1. Ultrasonic probe; 2. Placement plate; 3. Indwelling needle; 4. Rotating shaft one; 5. Clamp; 6. Handwheel; 7. Threaded rod one; 8. Trapezoidal push plate; 9. Locking block; 10. Telescopic rod; 11. Spring; 12. Rotating shaft two; 13. Ball bearing; 14. Connecting block; 15. Threaded rod two; 16. Handle; 17. Guide post; 18. Limiting plate; 19. Slide groove. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Reference Figure 1 - Figure 3 An embodiment of this utility model provides an ultrasonic guiding device for indwelling needle puncture, including an ultrasonic probe 1, a placement plate 2 fixedly connected to one side of the outer wall of the ultrasonic probe 1, a rotating shaft 4 rotatably connected inside the placement plate 2, a clamp 5 fixedly connected to one end of the rotating shaft 4, an indwelling needle 3 disposed on one side of the outer wall of the clamp 5, a threaded rod 7 rotatably connected inside the rotating shaft 4, a handwheel 6 fixedly connected to one end of the threaded rod 7, a reset component disposed inside the rotating shaft 4, and a fixing component disposed on the outer wall of the threaded rod 7. The fixing component is used to fix the rotating shaft 4 after rotation to ensure its stability and accuracy and prevent positional displacement or unnecessary loosening during operation.
[0028] The fixing component includes a trapezoidal push plate 8, the inner thread of which is connected to the outer wall of the threaded rod 7. A locking block 9 is slidably connected to the outer wall of the trapezoidal push plate 8. The locking block 9 is moved to both sides by the inclined surfaces on both sides of the trapezoidal push plate 8. The outer wall of the locking block 9 is slidably connected to the inside of the rotating shaft 4. The movement of the locking block 9 realizes the fixing and release of the adjusted rotating shaft 4. The reset component includes a telescopic rod 10, one end of which is fixedly connected to the inside of the rotating shaft 4, and the other end of which is fixedly connected to the inside of the locking block 9. A spring 11 is sleeved on the outer wall of the telescopic rod 10. The spring 11 provides sufficient restoring force to ensure that the locking block 9 can quickly return to its original position when needed and remain stable.
[0029] Specifically, after positioning the placement plate 2, the angle of the indwelling needle 3 is adjusted. At this time, the drive handwheel 6 drives the rotation of the inside of the rotating shaft 4 through the threaded rod 7. The threaded relationship between the threaded rod 7 and the trapezoidal push plate 8 ensures that the trapezoidal push plate 8 can move linearly inside the rotating shaft 4 as the threaded rod 7 rotates. When the trapezoidal push plate 8 moves backward, the locking block 9 will gradually separate from the rotating shaft 4. At this time, the rebound force of the spring 11 will push the locking block 9 back into the inside of the rotating shaft 4, releasing the fixation of the rotating shaft 4, so that the rotating shaft 4 can rotate freely. During this process, the rotating shaft 4 and the clamp 5 work together to drive the indwelling needle 3 to complete the angle adjustment. After the angle adjustment is completed, the drive handwheel 6 rotates in the opposite direction, so that the trapezoidal push plate 8 pushes the locking block 9 back into the inside of the rotating shaft 4, thereby fixing the rotating shaft 4. The adjustment process of the indwelling needle 3 becomes simpler and more precise, providing greater flexibility and safety for the puncture operation.
[0030] Reference Figure 4 - Figure 6A rotating shaft 12 is fixedly connected to one side of the inner side of the storage plate 2. A threaded rod 15 is threadedly connected inside the rotating shaft 12. A handle 16 is fixedly connected to one end of the threaded rod 15, and a connecting block 14 is rotatably connected to the other end of the threaded rod 15. The connecting block 14 is fixedly connected to one side of the outer wall of the clamp 5. A limit component is provided on the outer wall of the clamp 5 to limit the displacement of the clamp 5, ensuring that the clamp 5 will not move unnecessarily during operation and preventing it from moving accidentally due to vibration or other factors, thereby affecting the accuracy of use. A ball bearing 13 is rotatably connected inside the clamp 5. The limit component includes a guide post 17. One end of the guide post 17 is fixedly connected to the outer wall of the clamp 5, and the other end of the guide post 17 is fixedly connected to the limiting plate 18. A groove 19 is provided on one side of the inner side of the shelf 2. The outer wall of the trapezoidal push plate 8 is slidably connected to the inside of the rotating shaft 4. The trapezoidal push plate 8 is used to push the block 9 to move. One end of the spring 11 is fixedly connected to the inside of the block 9. The other end of the spring 11 is fixedly connected to the inside of the rotating shaft 4. The outer wall of the guide post 17 is slidably connected to the inside of the groove 19. The groove 19 is used to limit the guide post 17 to prevent the guide post 17 from deviating. The limiting plate 18 is set on one side of the outer wall of the shelf 2. The limiting plate 18 is used to limit the guide post 17.
[0031] Specifically, the indwelling needle 3 first needs to be securely placed between the two clamps 5. This process is achieved by driving the threaded rod 15 to rotate via the drive handle 16. The threaded relationship between the threaded rod 15 and the rotating shaft 12 allows the threaded rod 15 to move the clamps 5 along the direction of the placement plate 2 via the connecting block 14. The clamps 5 can precisely hold the placement plate 2 between the two clamps 5, thereby achieving the positioning of the placement plate 2. At the same time, the guide post 17 limits the movement trajectory of the clamps 5, ensuring that the movement of the clamps 5 is precisely controlled and avoiding deviation or instability. This effectively ensures the stability of the indwelling needle 3 throughout the positioning process, laying a solid foundation for subsequent angle adjustment and puncture operations.
[0032] Working principle: When the ultrasound-guided device for indwelling needle puncture is needed, the indwelling needle 3 is first placed between the two clamps 5. Then, the drive handle 16 drives the threaded rod 15 to rotate inside the rotating shaft 12. With the threaded relationship between the threaded rod 15 and the rotating shaft 12, the threaded rod 15 drives the clamps 5 to move towards the placement plate 2 through the connecting block 14, thereby clamping the placement plate 2 between the two clamps 5 for positioning. During this process, the movement of the clamps 5 is limited by the guide post 17.
[0033] Furthermore, after positioning the shelf 2, the drive handwheel 6 drives the threaded rod 7 to rotate inside the rotating shaft 4. Combined with the threaded relationship between the threaded rod 7 and the trapezoidal push plate 8, the trapezoidal push plate 8 moves linearly inside the rotating shaft 4 as the threaded rod 7 rotates. When the trapezoidal push plate 8 moves backward, it gradually separates from the locking block 9. At this time, the spring 11's rebound causes the locking block 9 to move back into the rotating shaft 4, thus releasing the fixation of the rotating shaft 4. Then, the rotating shaft 4 can be rotated to cooperate with the clamp 5 to rotate the indwelling needle 3, achieving angle adjustment. After angle adjustment, the drive handwheel 6 rotates in the opposite direction, allowing the trapezoidal push plate 8 to push the locking block 9 back into the rotating shaft 4, achieving fixation and thus achieving angle adjustment.
[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An ultrasound-guided device for indwelling needle puncture, comprising an ultrasound probe (1), characterized in that: A placement plate (2) is fixedly connected to one side of the outer wall of the ultrasonic probe (1). A rotating shaft (4) is rotatably connected inside the placement plate (2). A clamp (5) is fixedly connected to one end of the rotating shaft (4). An indwelling needle (3) is provided on one side of the outer wall of the clamp (5). A threaded rod (7) is rotatably connected inside the rotating shaft (4). A handwheel (6) is fixedly connected to one end of the threaded rod (7). A reset component is provided inside the rotating shaft (4). A fixing component is provided on the outer wall of the threaded rod (7). The fixing component is used to fix the rotating shaft (4) after rotation. The fixing component includes a trapezoidal push plate (8), the inner thread of which is connected to the outer wall of the threaded rod (7), and a locking block (9) is slidably connected to the outer wall of the trapezoidal push plate (8), the outer wall of which is slidably connected to the inside of the rotating shaft (4).
2. The ultrasound-guided device for indwelling needle puncture according to claim 1, characterized in that: The reset assembly includes a telescopic rod (10), one end of which is fixedly connected to the inside of the rotating shaft (4), and the other end of which is fixedly connected to the inside of the locking block (9). A spring (11) is sleeved on the outer wall of the telescopic rod (10).
3. The ultrasound-guided device for indwelling needle puncture according to claim 1, characterized in that: A rotating shaft (12) is fixedly connected to one side of the inner side of the storage plate (2). A threaded rod (15) is threadedly connected to the inner side of the rotating shaft (12). A handle (16) is fixedly connected to one end of the threaded rod (15). A connecting block (14) is rotatably connected to the other end of the threaded rod (15). The connecting block (14) is fixedly connected to one side of the outer wall of the clamp (5). A limit component is provided on the outer wall of the clamp (5). The limit component is used to limit the displacement of the clamp (5). A ball bearing (13) is rotatably connected inside the clamp (5).
4. The ultrasound-guided device for indwelling needle puncture according to claim 3, characterized in that: The limiting component includes a guide post (17), one end of which is fixedly connected to the outer wall of the clamp (5), and the other end of which is fixedly connected to a limiting plate (18). A groove (19) is provided on one side of the inner side of the placement plate (2).
5. The ultrasound-guided device for indwelling needle puncture according to claim 1, characterized in that: The outer wall of the trapezoidal push plate (8) is slidably connected to the inside of the rotating shaft (4), and the trapezoidal push plate (8) is used to push the card block (9) to move.
6. The ultrasound-guided device for indwelling needle puncture according to claim 2, characterized in that: One end of the spring (11) is fixedly connected to the inside of the card block (9), and the other end of the spring (11) is fixedly connected to the inside of the rotating shaft (4).
7. The ultrasound-guided device for indwelling needle puncture according to claim 4, characterized in that: The outer wall of the guide post (17) is slidably connected to the inside of the slide groove (19), which is used to limit the guide post (17).
8. The ultrasound-guided device for indwelling needle puncture according to claim 4, characterized in that: The limiting plate (18) is disposed on one side of the outer wall of the shelf (2), and the limiting plate (18) is used to limit the guide post (17).