Ultrasonic guidance internal arteriovenous fistula puncture positioning system
By controlling the insertion speed of the puncture needle through limiting components and speed regulating components, the problem of the puncture needle being difficult to move at a constant speed during ultrasound-guided puncture is solved, thus improving the accuracy and stability of the puncture.
Patent Information
- Application Number
- CN202522298773.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-30
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-10-30
AI Technical Summary
During ultrasound-guided puncture, the respiratory movements of the patient's skin and muscles, as well as the tremors of the operator's hands, make it difficult to insert the puncture needle at a uniform speed, affecting the accuracy of the puncture.
The insertion speed of the puncture needle is limited by a limiting component and a speed regulating component. The insertion speed of the puncture needle is controlled by adjusting the area of the vent hole. The limiting component and the fixing frame are used to maintain the synchronous movement of the puncture needle and the push rod.
This allows for uniform needle insertion, improving the accuracy and stability of the puncture and ensuring that the needle accurately reaches the target location.
Smart Images
Figure CN223715790U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to puncture guiding device technical field, concretely relates to a kind of ultrasound-guided arteriovenous fistula puncture positioning system. BACKGROUND
[0002] Ultrasound-guided puncture biopsy is a minimally invasive diagnostic technique that targets internal lumps or solid organs under the monitoring and guidance of real-time ultrasound images. Through real-time imaging by ultrasound equipment, it clearly displays the lesion location, size and surrounding blood vessel distribution, guiding the puncture needle to avoid important structures and accurately obtain the target tissue. It can accurately diagnose diseases at the pathological level and even the genetic level, providing a basis for the development of individualized and scientific treatment plans.
[0003] The ultrasound-guided puncture device is configured with a puncture frame for the ultrasound probe to support and fix the puncture needle, and then puncture under the guidance of the ultrasound instrument. Compared with manual puncture, the puncture process guided by the puncture frame enables the puncture needle to travel along the guide line set by the ultrasound equipment, and the puncture target can be accurately reached through observation by the ultrasound monitor.
[0004] During the puncture process, the patient's skin and muscles will constantly move with breathing, and the operator's hand will shake, making it difficult to drive the puncture needle to implant at a constant speed. UTILITY MODEL CONTENT
[0005] To solve the above problems, the present application discloses an ultrasound-guided arteriovenous fistula puncture positioning system.
[0006] An ultrasound-guided arteriovenous fistula puncture positioning system includes a mounting bracket, an adjusting assembly and a speed limiting assembly. The speed limiting assembly includes a speed regulating bin, a push rod, a limiting piece and a speed regulator. One end of the adjusting assembly is connected to the mounting bracket, and the other end is fixedly connected to the outer wall of the speed regulating bin. One end of the push rod is inserted into the interior of the speed regulating bin. A sealing ring is provided on the sidewall of the push rod to block the gap between the push rod and the speed regulating bin. An exhaust pipe is provided at the end of the speed regulating bin away from the push rod. An exhaust hole is provided on the exhaust pipe. One end of the speed regulator is inserted into the interior of the exhaust pipe and blocks part of the exhaust hole. A puncture channel is provided in the interior of the push rod. The puncture needle passes through the push rod through the puncture channel. A through hole is provided on the speed regulating bin. The puncture needle passes through the speed regulating bin through the through hole. The limiting piece fixes the puncture needle inside the puncture channel.
[0007] Further, the limiting piece includes a fixed frame and a limiting ring. One end of the fixed frame is fixedly connected to the push rod, and the other end is detachably connected to the limiting piece. A limiting hole is provided in the interior of the fixed frame. The puncture needle passes through the fixed frame through the limiting hole.
[0008] Further, the inside of the speed regulating bin is provided with a buffer piece; one end of the buffer piece is in abutment with the inner wall of the speed regulating bin, and the other end is in abutment with the push rod.
[0009] The utility model discloses the beneficial effects of:
[0010] When using, the puncture needle is fixed in the inside of the puncture channel by the limiting piece, so that the puncture needle moves synchronously with the push rod; the push rod is pushed, and the puncture needle is driven to move, and the gas in the inside of the speed regulating bin is pushed out through the exhaust hole by the push rod. Since the area of the exhaust hole is limited, the speed of the gas discharged through the exhaust hole is limited, and the moving speed of the push rod in the inside of the speed regulating bin is limited, so that the implantation speed of the puncture needle is limited, and the puncture needle can be implanted at a uniform speed.
[0011] The speed regulator shields part of the exhaust hole, the area of the exhaust hole shielded by the speed regulator can be changed by changing the position of the speed regulator, the area of the exhaust hole used for discharging gas is adjusted, and the speed of the gas discharged through the exhaust hole is changed, so that the moving speed of the push rod in the inside of the speed regulating bin is changed, and the implantation speed of the puncture needle is changed. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a perspective view of an ultrasonic guided arteriovenous fistula puncture positioning system of the utility model;
[0013] Figure 2 It is a front view of an ultrasonic guided arteriovenous fistula puncture positioning system of the utility model;
[0014] Figure 3 It is Figure 2 A-A sectional view;
[0015] Figure 4 It is Figure 3 A partial enlarged view;
[0016] Figure 5 It is a plan view of an ultrasonic guided arteriovenous fistula puncture positioning system of the utility model;
[0017] Figure 6 It is a side view of an ultrasonic guided arteriovenous fistula puncture positioning system of the utility model;
[0018] Figure 7 It is Figure 6 B-B sectional view;
[0019] In the figure, 1, mounting frame; 2, adjusting assembly; 3, speed limiting assembly; 4, puncture needle; 11, fixed support; 12, movable support; 13, stopper; 21, slide; 22, sliding block; 23, ball joint; 24, positioner; 25, connecting support; 26, first pointer; 27, second pointer; 31, speed regulating bin; 32, push rod; 33, limiting piece; 34, buffer piece; 35, speed regulator; 311, exhaust pipe; 312, connecting pipe; 313, exhaust hole; 321, sealing ring; 351, speed regulating piston. DETAILED DESCRIPTION
[0020] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described clearly and completely below in conjunction with the embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0021] In this document, "illustrative" means "serving as an example, instance, or illustration," and should not necessarily be construed as preferred or advantageous over other embodiments.
[0022] In order to make the drawings clear, only the parts related to the present application are schematically shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawings clear and easy to understand, in some drawings, only one of the parts with the same structure or function is schematically shown, or only one of them is marked.
[0023] In this document, it should be understood that the terms "upper", "lower", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0024] In this document, unless otherwise explicitly specified and limited, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" means two or more; the terms "connection", "fixing" and the like should be understood broadly, for example, "connection" can be fixed connection, or detachable connection, or integrally connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0025] As Figures 1-7 shown, an ultrasound-guided arteriovenous fistula puncture positioning system includes a mounting frame 1, an adjusting assembly 2 and a speed limiting assembly 3; the speed limiting assembly 3 includes a speed regulating bin 31, a push rod 32, a limiting piece 33 and a speed regulator 35; one end of the adjusting assembly 2 is connected with the mounting frame 1, and the other end is fixedly connected with the outer wall of the speed regulating bin 31; one end of the push rod 32 is inserted into the inside of the speed regulating bin 31; a sealing ring 321 is arranged on the side wall of the push rod 32 to block the gap between the push rod 32 and the speed regulating bin 31; an exhaust pipe 311 is arranged at the end of the speed regulating bin 31 away from the push rod 32; an exhaust hole 313 is arranged on the exhaust pipe 311;
[0026] When in use, the limiting piece 33 is used to fix the puncture needle 4 in the inside of the puncture channel, so that the puncture needle 4 moves synchronously with the push rod 32; the push rod 32 is pushed to drive the puncture needle 4 to move, at this time, the push rod 32 pushes the gas in the inside of the speed regulating bin 31 out through the exhaust hole 313. Since the area of the exhaust hole 313 is limited, the speed of the gas discharged through the exhaust hole 313 is limited, and thus the moving speed of the push rod 32 in the inside of the speed regulating bin 31 is limited, so as to limit the implantation speed of the puncture needle 4, and the puncture needle 4 can be implanted at a uniform speed.
[0027] One end of the speed regulator 35 is inserted into the inside of the exhaust pipe 311 and blocks part of the exhaust hole 313, by changing the position of the speed regulator 35, the area of the exhaust hole 313 blocked by the speed regulator 35 can be changed, so as to adjust the area of the exhaust hole 313 for exhaust, and thus the speed of the gas discharged through the exhaust hole 313 is changed, and thus the moving speed of the push rod 32 in the inside of the speed regulating bin 31 is changed, so as to change the implantation speed of the puncture needle 4. The inside of the push rod 32 is provided with a puncture channel; the puncture needle 4 passes through the push rod 32 through the puncture channel; the speed regulating bin 31 is provided with a through hole; the puncture needle 4 passes through the speed regulating bin 31 through the through hole; the limiting piece 33 fixes the puncture needle 4 in the inside of the puncture channel.
[0028] Specifically, the limiting piece 33 includes a fixed frame and a limiting ring; one end of the fixed frame is fixedly connected with the push rod 32, and the other end is detachably connected with the limiting piece 33; the inside of the fixed frame is provided with a limiting hole; the puncture needle 4 passes through the fixed frame through the limiting hole. The end of the fixed frame away from the push rod 32 is provided with a flexible pipe. When in use, the puncture needle 4 is first passed through the fixed frame through the limiting hole, and then the limiting ring is installed on the fixed frame, the limiting ring presses the flexible pipe, the flexible pipe is deformed and tightly wrapped outside the puncture needle 4, the friction between the flexible pipe and the puncture needle 4 is increased, the puncture needle 4 can be limited on the fixed frame by using the friction, so as to make the puncture needle 4 move synchronously with the push rod 32.
[0029] Further, the tip of the puncture needle 4 is integrated with a micro optical fiber sensor, which analyzes the tissue type (blood vessel wall or blood) through reflected light spectrum. The inside of the puncture needle 4 is provided with a wire that transmits the detection signal of the micro optical fiber sensor to the outside. An indicator light is arranged on the outer wall of the mounting rack 1 or the adjusting assembly 2 or the speed limiting assembly 3, and the indicator light is connected with the micro optical fiber sensor through the wire, and the detection information of the micro optical fiber sensor will trigger the indicator light to change color, such as red = blood vessel wall, green = blood vessel cavity.
[0030] As shown in Figure 3 , the adjusting assembly 2 includes a sliding channel 21, a sliding block 22, a ball joint 23, a positioner 24 and a connecting bracket 25. One side of the sliding channel 21 is fixedly connected to the outer wall of the mounting rack 1, and the other side is slidingly connected with the sliding block 22. The end of the sliding block 22 away from the sliding channel 21 is provided with the ball joint 23. One end of the connecting bracket 25 is provided with a mounting cavity, and the other end is fixedly connected with the buffer assembly. The positioner 24 presses the ball joint 23 inside the mounting cavity.
[0031] The position of the sliding block 22 on the sliding channel 21 is changed to adjust the relative position between the guide frame and the fixed frame according to the physiological condition of the patient.
[0032] As shown in Figure 3 , the mounting rack 1 includes a fixed bracket 11, a movable bracket 12 and a stopper 13. The movable bracket 12 slides inside the fixed bracket 11. The stopper 13 abuts against the movable bracket 12 after entering the inside of the fixed bracket 11. The stopper 13 is threadedly connected with the fixed bracket 11.
[0033] In use, the ultrasonic probe is placed between the inner wall of the fixed bracket 11 and the movable bracket 12, and the stopper 13 is tightened to press the ultrasonic probe against the inner wall of the fixed bracket 11, thereby increasing the friction between the ultrasonic probe and the fixed bracket 11 and between the ultrasonic probe and the movable bracket 12, and locking the relative position relationship between the ultrasonic probe and the mounting rack 1 by using the friction.
[0034] Specifically, the contact surface of the fixed bracket 11 and the movable bracket 12 is provided with a fixed jaw, and the contact surface of the movable bracket 12 and the fixed bracket 11 is provided with a movable jaw. Both the fixed jaw and the movable jaw have a V-shaped groove. The purpose of this design is that when clamping the ultrasonic probe with a circular arc surface, the V-shaped groove can increase the contact area of the ultrasonic probe with the fixed jaw and the movable jaw, thereby enhancing the stability.
[0035] As shown in Figures 3-4As shown, the sliding block 22 comprises a slider, a key, a friction block, a pressing piece and a reset piece; one end of the slider moves along the slide 21, and the other end is fixedly connected with the ball joint 23; one end of the key is inserted into the interior of the slider and is fixedly connected with the pressing piece; the friction block and the reset piece are both located in the interior of the slider; one end of the reset piece abuts against the key, and the other end abuts against the inner wall of the slider; one end of the friction block is connected with the pressing piece, and the other end extends out of the slider and is connected with the slide 21.
[0036] When the key is pressed, the reset piece is compressed, the pressing piece is separated from the friction block, and at this time, there is no external force pressing the friction block on the slide 21. At this time, the sliding block 22 is moved, and the friction block is separated from the side wall of the slide 21, so that the relative position of the slider on the slide 21 can be changed. When the key is released, the reset piece restores its original shape. At this time, the pressing piece presses the friction block on the slide 21, thereby increasing the friction between the friction block and the slide 21, and the friction force is used to limit the slider on the slide 21.
[0037] Specifically, the reset piece is a spring.
[0038] As shown in the figure, Figure 5 The outer wall of the connecting bracket 25 is provided with a first pointer 26 and a second pointer 27; the first pointer 26 points to the first scale disc; the second pointer 27 points to the second scale disc; the plane where the first scale disc is located is perpendicular to the plane where the second scale disc is located. The first pointer 26 and the first scale disc can clearly indicate the deflection angle of the guide pipe on the horizontal plane. The second pointer 27 and the second scale disc can clearly indicate the angle between the axis of the guide pipe and the vertical plane.
[0039] Specifically, the first scale disc and the second scale disc are both arranged on the side wall of the sliding block 22.
[0040] Preferably, the first pointer 26 and the second pointer 27 are both rotationally connected with the connecting bracket 25, and the purpose of this design is to prevent the first pointer 26 and the second pointer 27 from hindering the rotation of the connecting bracket 25.
[0041] As shown in the figure, Figure 7 The interior of the speed regulating bin 31 is provided with a buffer piece 34; one end of the buffer piece 34 abuts against the inner wall of the speed regulating bin 31, and the other end abuts against the push rod 32.
[0042] The above is only a specific embodiment of the present application, and those skilled in the art can make other improvements or modifications on the basis of the above embodiment under the above teaching of the present application. Those skilled in the art should understand that the above specific description is only for better explanation of the purpose of the present application, and the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. An ultrasound-guided internal jugular vein fistula puncture positioning system comprising a mounting bracket, an adjustment assembly, and a speed limiting assembly, wherein, The speed limiting assembly comprises a speed regulating bin, a push rod, a limiting piece and a speed regulator; one end of the adjusting assembly is connected with the mounting frame, and the other end is fixedly connected with the outer wall of the speed regulating bin; one end of the push rod is inserted into the interior of the speed regulating bin; a sealing ring is arranged on the side wall of the push rod to block the gap between the push rod and the speed regulating bin; one end of the speed regulating bin away from the push rod is provided with an exhaust pipe; the exhaust pipe is provided with an exhaust hole; one end of the speed regulator is inserted into the interior of the exhaust pipe and blocks part of the exhaust hole; the interior of the push rod is provided with a puncture channel, and the puncture needle passes through the push rod through the puncture channel; the speed regulating bin is provided with a through hole; the puncture needle passes through the speed regulating bin through the through hole; the limiting piece fixes the puncture needle in the interior of the puncture channel.
2. The ultrasound-guided internal jugular vein fistula puncture positioning system according to claim 1, wherein, The limiting piece comprises a fixed frame and a limiting ring; one end of the fixed frame is fixedly connected with the push rod, and the other end is detachably connected with the limiting piece; the interior of the fixed frame is provided with a limiting hole; the puncture needle passes through the fixed frame through the limiting hole.
3. The ultrasound-guided internal jugular vein fistula puncture positioning system according to claim 1, wherein, The interior of the speed regulating bin is provided with a buffer piece; one end of the buffer piece abuts against the inner wall of the speed regulating bin, and the other end abuts against the push rod.
4. The ultrasound-guided internal jugular vein fistula puncture positioning system according to claim 1, wherein, The outer wall of the adjusting assembly is provided with a first pointer and a second pointer; the first pointer points to a first scale disc; the second pointer points to a second scale disc; the plane where the first scale disc is located is perpendicular to the plane where the second scale disc is located.
5. The ultrasound-guided internal jugular vein fistula puncture positioning system of claim 1, wherein, The adjusting assembly comprises a slide, a sliding block, a ball joint, a positioner and a connecting bracket; one side of the slide is fixedly connected to the outer wall of the mounting frame, and the other side is slidingly connected with the sliding block; one end of the sliding block away from the slide is provided with a ball joint; one end of the connecting bracket is provided with a mounting cavity, and the other end is fixedly connected with the buffer assembly; the positioner presses the ball joint in the interior of the mounting cavity.
6. The ultrasound-guided internal jugular vein fistula puncture positioning system according to claim 5, wherein, The sliding block comprises a sliding block, a key, a friction block, a pressing piece and a reset piece; one end of the sliding block moves along the slide, and the other end is fixedly connected with the ball joint; one end of the key is inserted into the interior of the sliding block and fixedly connected with the pressing piece; the friction block and the reset piece are both located in the interior of the sliding block; one end of the reset piece abuts against the key, and the other end abuts against the inner wall of the sliding block; one end of the friction block is connected with the pressing piece, and the other end extends out of the sliding block and is connected with the slide.
7. The ultrasound-guided internal jugular vein fistula puncture positioning system of claim 6, wherein, The reset piece is a spring.
8. The ultrasound-guided internal jugular vein fistula puncture positioning system of claim 1, wherein, The mounting frame comprises a fixed support, a movable support and a limiter; the movable support slides in the interior of the fixed support; the limiter abuts against the movable support after entering the interior of the fixed support; the limiter is threadedly connected with the fixed support.
9. The ultrasound-guided internal jugular vein fistula puncture positioning system of claim 8, wherein, The contact surface of the fixed support and the movable support is provided with a fixed jaw; the contact surface of the movable support and the fixed support is provided with a movable jaw.