Ultrasonic guided puncture device
By introducing a positioning structure into the ultrasound-guided puncture device, the problem of the inability to finely adjust the needle insertion angle is solved, enabling flexible adjustment and fixation of the needle insertion angle, thus ensuring the accuracy and reliability of the puncture.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEST CHINA HOSPITAL SICHUAN UNIV
- Filing Date
- 2025-02-07
- Publication Date
- 2026-05-15
AI Technical Summary
Existing ultrasound-guided puncture devices cannot be fine-tuned after adjusting the needle insertion angle, making it difficult to correct small deviations during puncture, and the guiding effect is easily lost when the angle is fixed.
An ultrasound-guided puncture device was designed, comprising a probe connection structure, a sector plate, a guide structure, and a positioning structure. The rotation range of the guide structure is limited or allowed by the movement of the positioning structure, thereby enabling fine adjustment or fixation of the needle insertion angle.
It enables fine-tuning of the needle insertion angle, ensuring the accuracy of puncture, and fixes the needle insertion angle when needed, thereby improving the precision and reliability of puncture.
Smart Images
Figure CN224235495U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical tools, and in particular to an ultrasound-guided puncture device. Background Technology
[0002] When performing punctures on deep blood vessels or tissues, the vessels or tissues cannot be visualized, making accurate puncture difficult without additional tools. Ultrasound-guided puncture solves this problem. Ultrasound-guided puncture uses ultrasound to visualize the unseen blood vessels or tissues, along with the needle, on a screen. The puncture is controlled by the screen, ensuring accurate placement. The needle insertion angle varies depending on the depth of the tissue. For example, for vessels 0.3-0.5cm deep, the angle is 20-40°; for 0.5-0.7cm deep, 40-60°; and for 0.7-1.0cm deep, 60-80°.
[0003] Manually controlling the puncture angle cannot guarantee accuracy, hence the development of ultrasound-guided puncture devices. Patents with application numbers 202022463594.3, 201920217163.3, and 202123073696.5 all disclose ultrasound-guided puncture devices. Common ultrasound-guided puncture devices feature an adjustable needle guide structure. By adjusting the angle of the guide structure according to the depth of the puncture tissue, accurate needle insertion angle can be ensured by using the guide structure to guide the needle.
[0004] A common drawback of ultrasound-guided puncture devices is that once the guide structure angle is adjusted and locked, it cannot be fine-tuned, meaning the needle insertion angle cannot be adjusted, making it difficult to correct small deviations that occur during the puncture process. If the guide structure angle is not locked after adjustment, the guide structure can swing significantly, thus losing the effectiveness of guiding the needle insertion and ensuring the needle insertion angle. Utility Model Content
[0005] The technical problem to be solved by this utility model is to provide an ultrasonic-guided puncture device with needle insertion guidance and adjustable needle insertion angle.
[0006] The technical solution adopted to solve the above problems is as follows: The ultrasound-guided puncture device includes a probe connection structure, a sector plate, a guide structure, and two positioning structures; the probe connection structure is used to connect with the ultrasound probe; the sector plate is connected to the probe connection structure, the lower end of the guide structure is hinged to the sector plate through a rotating shaft, the arc-shaped edge surface of the sector plate is an arc-shaped surface centered on the rotating shaft, and angle scales are set on the arc-shaped edge surface; the upper end of the guide structure extends beyond the arc-shaped edge surface; the positioning structure is installed on the sector plate and can move along the arc-shaped edge surface; the two positioning structures are located on both sides of the guide structure respectively; when both positioning structures move to fit against the guide structure, the positioning structure restricts the rotation of the guide structure; when the positioning structure moves to a distance from the guide structure, the positioning structure restricts the rotation range of the guide structure.
[0007] Furthermore, the sector plate has an arc-shaped elongated hole centered on the pivot, and an arc-shaped guide strip is formed between the arc-shaped elongated hole and the arc-shaped edge surface; the positioning structure includes a positioning sleeve and a tightening screw, the positioning sleeve is fitted on the arc-shaped guide strip, and the tightening screw is threadedly connected to the positioning sleeve; when the tightening screw tightens the arc-shaped guide strip, the positioning sleeve cannot move; when the tightening screw is loosened, the positioning sleeve can move along the arc-shaped guide strip.
[0008] Furthermore, the positioning sleeve has positioning protrusions that oriented towards the guiding structure.
[0009] Furthermore, the guiding structure includes a needle guide frame, a needle guide, and a pressure plate. The needle guide frame is located in front of the sector plate and includes a U-shaped frame and a needle guide pad. The U-shaped frame is hinged to the sector plate, and the opening of the U-shaped frame faces forward. The needle guide pad is connected to the lower end of the U-shaped frame. The pressure plate is connected to the U-shaped frame. The needle guide is located inside the U-shaped frame and includes a needle guide seat and a needle guide cover. The front surface of the needle guide seat has a needle guide groove arranged along the length direction of the needle guide seat. The needle guide cover covers the needle guide seat and covers the needle guide groove. The pressure plate presses the needle guide cover tightly. The pressure plate can be opened so that the needle guide cover can be removed forward.
[0010] Furthermore, one end of the pressure plate is hinged to one side of the U-shaped frame, and the other end of the pressure plate is fastened to the other end of the U-shaped frame.
[0011] Furthermore, the U-shaped frame has indicator marks corresponding to the guide groove, and the angle scale pointed to by the indicator marks indicates the angle of the guide groove.
[0012] Furthermore, the guide structure includes a rear panel and a connecting post. The rear panel is attached to the rear surface of the fan-shaped plate, and the connecting post passes through an arc-shaped elongated hole. The connecting post is connected to the U-shaped frame and the rear panel.
[0013] Furthermore, the probe connection structure includes a first connecting plate, a second connecting plate, a side plate, and two connecting bolts. The first connecting plate and the second connecting plate are arranged opposite to each other, and the two connecting bolts are spaced apart. The connecting bolts pass through the first connecting plate and are threadedly connected to the second connecting plate. The side plate is connected to one end of the first connecting plate, and the fan-shaped plate is connected to the side plate.
[0014] Furthermore, flexible pads are connected to both the first and second connecting plates.
[0015] The beneficial effects of this utility model are: This utility model mainly improves the fixing method of the guide structure, that is, the specific setting method of the positioning structure. The positioning structure is installed on the sector plate and can move along the arc-shaped edge surface. The two positioning structures are located on both sides of the guide structure. When both positioning structures move to fit against the guide structure, the positioning structure restricts the rotation of the guide structure; when the positioning structure moves to a distance from the guide structure, the positioning structure restricts the rotation range of the guide structure.
[0016] When setting the angle of the guide structure, adjust it to the required angle, and then move the positioning structure to a certain distance from the guide structure. For example, if the measured depth of human tissue is approximately 0.7 cm, the preset needle insertion angle is 60°. Rotate the guide structure until it aligns with the 60° mark on the angle scale, and then move the positioning structure to a certain distance from the guide structure (this distance depends on the size of the sector plate). After adjustment, the needle insertion angle of the guide structure and the puncture needle can be finely adjusted around 60°, for example, 60° ± 2°. The significance of this is that during the puncture procedure, the needle insertion angle can be finely adjusted according to the location of the tissue to be punctured, ensuring accurate puncture.
[0017] If a fixed needle insertion angle is required and no fine-tuning is needed, both positioning structures can be moved to fit against the guide structure; therefore, this invention also allows for the selection of whether the needle insertion angle is fine-tunable. Attached Figure Description
[0018] Figure 1 This is a front view of the ultrasound-guided puncture device.
[0019] Figure 2 for Figure 1 A magnified view of a portion of the image;
[0020] Figure 3 This is a rear view of the ultrasound-guided puncture device.
[0021] Figure 4 To guide the main view of the structure;
[0022] Figure 5 To guide the structure, see the right view;
[0023] Figure 6To guide the structural top view;
[0024] Figure 7 This is a diagram showing the positioning structure.
[0025] Figure 8 Top view of the ultrasound-guided puncture device;
[0026] Figure 9 This is a diagram of the probe connection structure; Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0028] like Figures 1 to 9 As shown, the ultrasound-guided puncture device includes a probe connection structure 1, a sector plate 2, a guide structure 3, and two positioning structures 4. The probe connection structure 1 is used to connect with an ultrasound probe 6. The sector plate 2 is connected to the probe connection structure 1. The lower end of the guide structure 3 is hinged to the sector plate 2 via a rotating shaft 5. The arc-shaped edge surface 23 of the sector plate 2 is an arc-shaped surface centered on the rotating shaft 5. An angle scale 24 is provided on the arc-shaped edge surface 23. The upper end of the guide structure 3 extends beyond the arc-shaped edge surface 23. The positioning structures 4 are installed on the sector plate 2 and can move along the arc-shaped edge surface 23. The two positioning structures 4 are located on both sides of the guide structure 3. When both positioning structures 4 move to fit against the guide structure 3, the positioning structures 4 restrict the rotation of the guide structure 3. When the positioning structures 4 move to a distance from the guide structure 3, the positioning structures 4 restrict the rotation range of the guide structure 3.
[0029] The usage of this utility model is basically the same as that of the prior art. The probe connection structure 1 is connected to the ultrasound probe 6. The guiding structure 3 is adjusted to the required angle to guide the insertion of the puncture needle, limiting the needle's swing or its range of swing, thus ensuring the insertion angle meets the requirements. These requirements typically include those described in the background art, such as a puncture angle of 20-40° for a blood vessel depth of 0.3-0.5 cm; 40-60° for a blood vessel depth of 0.5-0.7 cm; and 60-80° for a blood vessel depth of 0.7-1.0 cm.
[0030] This utility model mainly improves the fixing method of the guide structure 3, that is, the specific setting method of the positioning structure 4. The positioning structure 4 is installed on the sector plate 2 and can move along the arc edge surface 23. The two positioning structures 4 are located on both sides of the guide structure 3. When both positioning structures 4 move to fit against the guide structure 3, the positioning structure 4 restricts the rotation of the guide structure 3; when the positioning structure 4 moves to a distance from the guide structure 3, the positioning structure 4 restricts the rotation range of the guide structure 3.
[0031] Thus, when setting the angle of the guide structure 3, adjust it to the required angle, and then move the positioning structure 4 to a certain distance from the guide structure 3. For example, if the measured depth of human tissue is approximately 0.7 cm, the needle insertion angle should be approximately 60°. Rotate the guide structure 3 to align it with the 60° mark on the angle scale, and then move the positioning structure 4 to a certain distance from the guide structure 3 (this distance is related to the size of the sector plate 2). After adjustment, the needle insertion angle of the guide structure 3 and the puncture needle can be finely adjusted to approximately 60°, for example, 60° ± 2°. The significance of this is that during the puncture procedure, the needle insertion angle can be finely adjusted according to the location of the tissue to be punctured, ensuring accurate puncture.
[0032] If a fixed needle insertion angle is required and no fine-tuning is needed, both positioning structures 4 can be moved to fit against the guide structure 3; therefore, this invention also allows for the selection of whether the needle insertion angle is fine-tunable.
[0033] The positioning structure 4 can be configured as follows: The sector plate 2 has an arc-shaped elongated hole 21 centered on the pivot 5, forming an arc-shaped guide strip 22 between the arc-shaped elongated hole 21 and the arc-shaped edge surface 23; the positioning structure 4 includes a positioning sleeve 41 and a tightening screw 42. The positioning sleeve 41 is fitted onto the arc-shaped guide strip 22, and the tightening screw 42 is threadedly connected to the positioning sleeve 41; when the tightening screw 42 tightens the arc-shaped guide strip 22, the positioning sleeve 41 cannot move; when the tightening screw 42 is loosened, the positioning sleeve 41 can move along the arc-shaped guide strip 22. Preferably, the positioning sleeve 41 has a positioning protrusion 411 facing the guide structure 3. The positioning protrusion 411 is used to contact the guide structure 3 and limit the extreme position of the guide structure 3's swing.
[0034] The specific configuration of the guide structure 3 can be as follows: The guide structure 3 includes a needle guide frame 31, a needle guide 32, and a pressure plate 33; the needle guide frame 31 is located in front of the sector plate 2, and the needle guide frame 31 includes a U-shaped frame 311 and a needle guide pad 312. The U-shaped frame 311 is hinged to the sector plate 2, and the opening of the U-shaped frame 311 faces forward. The needle guide pad 312 is connected to the lower end of the U-shaped frame 311; the pressure plate 33 is connected to the U-shaped frame 311. Connection; the needle guide 32 is located inside the U-shaped frame 311. The needle guide 32 includes a needle guide seat 321 and a needle guide cover 322. The front surface of the needle guide seat 321 has a needle guide groove 323 arranged along the length direction of the needle guide seat 321. The needle guide cover 322 covers the needle guide seat 321 and covers the needle guide groove 323. The pressure plate 33 presses the needle guide cover 322, and the pressure plate 33 can be opened to allow the needle guide cover 322 to be removed forward. Specifically, one end of the pressure plate 33 is hinged to one side of the U-shaped frame 311, and the other end of the pressure plate 33 is fastened to the other end of the U-shaped frame 311.
[0035] The U-shaped frame 311 is hinged to the sector plate 2, specifically via a pivot 5, allowing the guide structure 3 to swing. The guide frame 31 includes a U-shaped frame 311 and a guide pad 312. The U-shaped frame 311 accommodates the guide 32, and the guide pad 312 prevents the guide 32 from slipping. The two components of the guide 32, namely the guide seat 321 and the guide cover 322, are not directly connected. The guide cover 322 only fits against the guide seat 321, and the relative movement between the guide cover 322 and the guide seat 321 is prevented by the pressure plate 33 pressing the guide cover 322. The guide groove 323 guides the puncture needle, specifically allowing the puncture needle to pass through the guide groove 323. After the puncture is completed, open the pressure plate 33, remove the guide needle cover 322 forward, and the guide needle groove 323 will open. The ultrasound-guided puncture device can then be removed from the puncture needle. Once the ultrasound-guided puncture device is removed, the puncture operation is complete. The guide needle 32 can be replaced for each puncture to ensure cleanliness and sterility.
[0036] The guide structure 3 faces the angle scale 24, which represents its angle. The guide structure 3 has a certain width, so it is necessary to determine exactly where it faces the angle scale 24 to represent its angle. Specifically, it can be as follows: the U-shaped frame 311 has an indicator mark 313 corresponding to the guide needle groove 323, and the angle scale 24 pointed to by the indicator mark 313 indicates the angle of the guide needle groove 323.
[0037] Furthermore, the preferred guide structure 3 includes a rear plate 35 and a connecting post 34. The rear plate 35 is attached to the rear surface of the sector plate 2, and the connecting post 34 passes through the arc-shaped elongated hole 21. The connecting post 34 is connected to the U-shaped frame 311 and the rear plate 35. The function of the rear plate 35 is to prevent the upper part of the guide structure 3 from leaving the sector plate 2.
[0038] The probe connection structure 1 can be designed according to existing technology, or as follows: The probe connection structure 1 includes a first connecting plate 11, a second connecting plate 12, a side plate 14, and two connecting bolts 13. The first connecting plate 11 and the second connecting plate 12 are arranged opposite to each other, and the two connecting bolts 13 are spaced apart. The connecting bolts 13 pass through the first connecting plate 11 and are threadedly connected to the second connecting plate 12. The side plate 14 is connected to one end of the first connecting plate 11; the sector plate 2 is connected to the side plate 14. When the connecting bolts 13 are tightened, the first connecting plate 11 and the second connecting plate 12 can clamp the ultrasound probe. Preferably, flexible pads 15 are connected to both the first connecting plate 11 and the second connecting plate 12. This can prevent damage to the ultrasound probe 6 caused by clamping.
Claims
1. An ultrasound-guided puncture device, characterized in that: It includes a probe connection structure (1), a fan-shaped plate (2), a guide structure (3), and two positioning structures (4); the probe connection structure (1) is used to connect with the ultrasonic probe (6); the fan-shaped plate (2) is connected to the probe connection structure (1), and the lower end of the guide structure (3) is hinged to the fan-shaped plate (2) through a rotating shaft (5). The arc-shaped edge surface (23) of the fan-shaped plate (2) is an arc-shaped surface centered on the rotating shaft (5), and angle scales (24) are provided on the arc-shaped edge surface (23). 3) The upper end extends beyond the arc-shaped edge surface (23); the positioning structure (4) is installed on the fan-shaped plate (2) and can move along the arc-shaped edge surface (23). The two positioning structures (4) are located on both sides of the guide structure (3). When both positioning structures (4) move to fit with the guide structure (3), the positioning structure (4) restricts the rotation of the guide structure (3); when the positioning structure (4) moves to a distance from the guide structure (3), the positioning structure (4) restricts the rotation range of the guide structure (3).
2. The ultrasound-guided puncture device according to claim 1, characterized in that: The fan-shaped plate (2) has an arc-shaped elongated hole (21) centered on the pivot (5), and an arc-shaped guide strip (22) is formed between the arc-shaped elongated hole (21) and the arc-shaped edge surface (23); the positioning structure (4) includes a positioning sleeve (41) and a tightening screw (42). The positioning sleeve (41) is fitted on the arc-shaped guide strip (22), and the tightening screw (42) is threadedly connected to the positioning sleeve (41); when the tightening screw (42) tightens the arc-shaped guide strip (22), the positioning sleeve (41) cannot move; when the tightening screw (42) is loosened, the positioning sleeve (41) can move along the arc-shaped guide strip (22).
3. The ultrasound-guided puncture device according to claim 2, characterized in that: The positioning sleeve (41) has a positioning protrusion (411) facing the guide structure (3).
4. The ultrasound-guided puncture device according to claim 3, characterized in that: The guiding structure (3) includes a needle guide frame (31), a needle guide (32), and a pressure plate (33); the needle guide frame (31) is located in front of the sector plate (2), and the needle guide frame (31) includes a U-shaped frame (311) and a needle guide pad (312). The U-shaped frame (311) is hinged to the sector plate (2), the opening of the U-shaped frame (311) faces forward, and the needle guide pad (312) is connected to the lower end of the U-shaped frame (311); the pressure plate (33) is connected to the U-shaped frame (311); the needle guide ( 32) Located within the U-shaped frame (311), the needle guide (32) includes a needle guide seat (321) and a needle guide cover (322). The front surface of the needle guide seat (321) has a needle guide groove (323) arranged along the length direction of the needle guide seat (321). The needle guide cover (322) covers the needle guide seat (321) and covers the needle guide groove (323). The pressure plate (33) presses the needle guide cover (322) tightly. The pressure plate (33) can be opened so that the needle guide cover (322) can be taken out forward.
5. The ultrasound-guided puncture device according to claim 4, characterized in that: One end of the pressure plate (33) is hinged to one side of the U-shaped frame (311), and the other end of the pressure plate (33) is fastened to the other end of the U-shaped frame (311).
6. The ultrasound-guided puncture device according to claim 5, characterized in that: The U-shaped frame (311) has an indicator mark (313) corresponding to the guide groove (323), and the angle scale (24) pointed to by the indicator mark (313) indicates the angle of the guide groove (323).
7. The ultrasound-guided puncture device according to claim 6, characterized in that: The guide structure (3) includes a back panel (35) and a connecting post (34). The back panel (35) is attached to the back surface of the fan-shaped plate (2). The connecting post (34) passes through the arc-shaped elongated hole (21) and is connected to the U-shaped frame (311) and the back panel (35).
8. The ultrasound-guided puncture device according to claim 7, characterized in that: The probe connection structure (1) includes a first connecting plate (11), a second connecting plate (12), a side plate (14), and two connecting bolts (13). The first connecting plate (11) and the second connecting plate (12) are arranged opposite to each other, and the two connecting bolts (13) are spaced apart. The connecting bolts (13) pass through the first connecting plate (11) and are threadedly connected to the second connecting plate (12). The side plate (14) is connected to one end of the first connecting plate (11). The fan-shaped plate (2) is connected to the side plate (14).
9. The ultrasound-guided puncture device according to claim 8, characterized in that: Flexible pads (15) are connected to both the first connecting plate (11) and the second connecting plate (12).