A device for assisting ultrasound-guided pericardial effusion puncture

Abstract

This utility model relates to the field of medical auxiliary device technology, specifically disclosing a device for assisting ultrasound-guided pericardial effusion puncture. It includes a fixator for support, with a probe mounted on the fixator for puncture site detection and positioning. Side adjustment components are provided on both sides of the fixator, forming a clamping area between the two side adjustment components to fix the probe. One side of one of the side adjustment components has a fixing component for placing the puncture needle. The fixator includes a frame. This utility model utilizes the probe mounted on the fixator at a fixed angle to the puncture needle, using ultrasound signals to detect and locate the puncture site. With a clear image of the patient's pericardial region, it allows medical personnel to accurately understand the location, depth, extent, and relationship with surrounding tissues of the pericardial effusion, providing precise information for the puncture procedure.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically a device for assisting ultrasound-guided pericardial effusion puncture. Background Technology

[0002] Pericardial effusion, a common pathological condition, refers to an abnormal increase in fluid within the pericardial cavity. Under normal physiological conditions, the pericardial cavity contains only 5-15 ml of serous fluid, whose main function is to lubricate the heart. However, when the fluid volume exceeds 50 ml, it can be diagnosed as pericardial effusion. If the effusion remains excessive, it can compress the heart, severely affecting its diastolic and systolic functions, leading to cardiac tamponade, and in some severe cases, even endangering the patient's life.

[0003] Pericardiocentesis is an important clinical procedure for treating pericardial effusion. Traditional pericardiocentesis is performed blindly, relying primarily on anatomical localization to determine the puncture point and needle insertion path. However, this method is easily affected by individual differences in patient anatomy, leading to a higher puncture risk. With the development of medical technology, ultrasound-guided puncture has been increasingly applied to pericardiocentesis. This method has the core advantage of real-time visualization, clearly showing the specific location, depth, extent of the effusion, and its relationship with surrounding important tissues (such as the myocardium and coronary arteries), thus effectively avoiding mispuncture and significantly reducing the incidence of complications. Therefore, it has become the preferred method for pericardiocentesis in clinical practice.

[0004] However, in most medical institutions, pericardiocentesis is still performed by cardiologists. In practice, the success of the procedure heavily depends on the coordination between the fluoroscopy physician and the cardiologist. Furthermore, because the patient's heart is constantly beating during the puncture, and the chest cavity moves during respiration, this increases the likelihood of needle displacement after entering the pericardium, potentially damaging the myocardium or blood vessels. Moreover, maintaining ultrasound visualization during needle insertion and precisely fixing the insertion depth throughout the entire procedure to minimize complications presents significant challenges. Therefore, this application provides a device for assisting ultrasound-guided pericardiocentesis. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a device for assisting ultrasound-guided pericardial effusion puncture. This solves the problems that in existing technologies, puncture is mostly performed by cardiologists, which is highly dependent on the coordination between ultrasound and cardiologists. The patient's heartbeat and chest movement increase the risk of needle tip displacement and injury, and maintaining ultrasound visualization and precise needle insertion is difficult.

[0006] The present invention relates to an auxiliary ultrasound-guided pericardial effusion puncture device, which includes a fixator for support, wherein an ultrasound probe is mounted on the fixator for puncture location detection. The fixator is provided with side adjustment components on both sides, and a clamping area is formed between the two side adjustment components for fixing the probe. One side of one of the side adjustment components is provided with a fixing component for placing the puncture needle. The fastener includes a frame, and one side of the frame has a through hole that extends completely through to form a plug-in area for installing a plug-in plate; The side adjustment component includes an adjustment plate, and a locking ring is provided in the middle of each of the two adjustment plates. A locking ring is provided on the inner side of the locking ring for limiting the outer side of the probe. One side of one of the adjustment plates is connected to the puncture needle via a fastener for puncturing the target area.

[0007] As a further improvement of this utility model, the frame is provided with symmetrically arranged connecting ears on both sides, and a through hole is opened at the connecting ear and a connecting shaft is passed through it for fixing the side adjustment component. The inner wall of the frame is provided with slide rails on both sides, and the inner side of the slide rails is adapted to the two sides of the plug-in plate.

[0008] As a further improvement of this utility model, the plug-in plate includes a plate body, the surface of which is provided with one or more through holes and adapted to the outer side of the probe, and one end of the plate body is provided with a pull ring for easy pulling of the plate body.

[0009] As a further improvement of this utility model, a hanging ear is provided on one side of the two adjustment plates that are close to each other. A connecting shaft is passed through the inner side of the hanging ear. The connecting shaft is adapted to the connecting ear. A slot and a strip are respectively provided on one side of the two adjustment plates. The slot and the strip are adapted to each other and are used to assist in limiting the outer side of the probe.

[0010] As a further improvement of this utility model, the fixing member includes a body, the top of the body is provided with a through hole, and an abutment block is provided on the inner side, and the through hole of the body is adapted to the puncture needle.

[0011] As a further improvement of this utility model, an indicator is provided on one side of the main body, and one side of the indicator is connected to one of the adjustment plates. The main body moves along the indicator to adjust the angle of the puncture needle. The indicator is arc-shaped and has a scale on its surface. A fastener is provided on the outside of the body, which is used to control the locking of the body and the indicator.

[0012] As a further improvement of this utility model, a limiting ring is provided on the inner side of the main body. The inner side of the limiting ring is engaged with the puncture needle. Two symmetrically arranged screw holes are opened on the top of the limiting ring, and a screw is threadedly connected to one of the screw holes.

[0013] As a further improvement of this utility model, both ends of the screw are inserted and rotated on both sides of the inner wall of the body, and a bevel gear set is provided on the outer side of one end of the screw for driving the screw to rotate.

[0014] As a further improvement of this utility model, a through hole is provided on the outer side of the main body, and a rotating shaft is installed thereon. One end of the rotating shaft is adapted to the active bevel gear in the bevel gear set, and is used to drive the screw to drive the limiting ring to perform reciprocating linear motion, thereby controlling the puncture depth of the puncture needle.

[0015] As a further improvement of this utility model, a vertical shaft is threaded through another screw hole of the limiting ring. The vertical shaft is symmetrically arranged with the screw and fixed to both sides of the inner wall of the body.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes a probe placed at the fixation device to locate the puncture site through ultrasound signals. It can clearly present an image of the patient's pericardial area, allowing medical staff to accurately understand the location, depth, extent, and relationship with surrounding tissues of pericardial effusion, providing precise basis for puncture operations. The puncture needle is connected to the adjustment plate via a fixing component, and the adjustment plate is fixed to the frame via a connecting shaft, so that the puncture needle and the probe maintain a relatively fixed position. After the probe determines the puncture target, the puncture needle can accurately puncture the target area, avoiding mispuncture due to mismatch between the two positions. The indicator of the fixing component can drive the body and the puncture needle to rotate along the circular axis to adjust the angle of the puncture needle; the rotating shaft and bevel gear set drive the screw to rotate, so that the limiting ring drives the puncture needle to make linear motion, accurately control the puncture depth, and further improve the puncture accuracy. Because the puncture needle can be precisely aimed at the target area and the depth can be accurately controlled, the need for repeated needle insertion can be reduced, thus lowering the risk of damage to the patient's myocardium or blood vessels. The probe continuously provides real-time ultrasound images during the puncture process, allowing medical staff to observe the needle tip position throughout the procedure and adjust the operation in a timely manner based on the images, ensuring puncture safety. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1This is a top view of the assembly of the fixture, side adjustment component, and plug-in plate of this utility model. Figure 2 This is a schematic diagram of the combined structure of the fixture, side adjustment component, plug-in plate, and probe of this utility model. Figure 3 This is a schematic diagram of the combined structure of the fixing component and the side adjustment component of this utility model; Figure 4 This is a schematic diagram of the combined structure of the fixing component and the puncture needle of this utility model; Figure 5 This is a three-dimensional structural diagram of the fixture of this utility model; Figure 6 This is a three-dimensional structural diagram of the fixture of this utility model from another angle; Figure 7 This is a top view of the fixture of this utility model; Figure 8 This is a side view of the fixture structure of this utility model; Figure 9 This is a schematic diagram of the structure of Embodiment 2 of this utility model; Figure 10 This is a schematic diagram of the fixture structure in Embodiment 2 of this utility model; Figure 11 This is a schematic diagram of another state structure of the indicator of this utility model; Figure 12 for Figure 11 Enlarged structural diagram at point A in the middle; Figure 13 This is a schematic diagram of the combination structure of the fixing component and the fastener in this utility model; Figure 14 This is a schematic diagram of the fastener in the locked state in this utility model.

[0018] In the diagram: 1. Fixator; 2. Side adjustment component; 3. Connector plate; 4. Probe; 5. Fixator; 6. Puncture needle; 11. Frame; 12. Connecting ear; 13. Insertion area; 14. Slide rail; 21. Adjusting plate; 22. Snap-fit ​​ring; 23. Snap-fit ​​groove; 24. Snap-fit ​​strip; 25. Snap-fit ​​ring; 26. Connecting shaft; 27. Hanging lug; 28. Indicator; 29. ​​Fastener; 30. Sliding column; 31. Through hole; 32. Pull ring; 33. Plate body; 51. Abutting block; 52. Limiting ring; 53. Vertical shaft; 54. Body; 55. Bevel gear set; 56. Screw. Detailed Implementation

[0019] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0020] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0021] Example 1 Please see Figures 1 to 6 The device for assisting ultrasound-guided pericardial effusion puncture provided in this application includes a fixator 1 for support, and a probe 4 is installed at the fixator 1 for puncture site exploration and positioning. Side adjustment parts 2 are provided on both sides of the fixator 1, and a clamping area is formed between the two side adjustment parts 2 for fixing the probe 4. One side of one of the side adjustment parts 2 is provided with a fixation part 5 for placing the puncture needle 6. The fixture 1 includes a frame 11, and a through hole is provided on one side of the frame 11 to form a plug-in area 13 for installing the plug-in plate 3. The side adjustment component 2 includes an adjustment plate 21. Each of the two adjustment plates 21 has a locking ring 22 in the middle. The locking ring 22 has a locking ring 25 on the inner side for limiting the outer side of the probe 4. One side of one of the adjustment plates 21 is connected to the puncture needle 6 via a fastener 5 for puncturing the target area.

[0022] The fixator 1 includes a frame 11. The frame 11 ensures the stability of the device. A through hole is provided on one side of the frame 11, which forms an insertion area 13. The insertion area 13 is used to install the insertion plate 3. In actual use, by inserting the insertion plate 3 into the through hole, the fixator 1 can be fixed to a suitable support through the insertion plate 3 during the pericardial effusion puncture operation, so as to ensure that the entire device will not shake during the operation, thereby ensuring the accuracy of the puncture operation.

[0023] Probe 4 is positioned at the fixator 1, and its main function is to explore and locate the puncture site. During ultrasound-guided pericardial effusion puncture, probe 4 can use ultrasound technology to display in real time the location, depth, extent, and relationship with surrounding tissues (such as myocardium and blood vessels) of the pericardial effusion. Based on the information fed back by probe 4, the operator can accurately determine the target puncture location, providing crucial information for subsequent puncture procedures.

[0024] Side adjustment components 2 are provided on both sides of the fixture 1, and a clamping area is formed between the two side adjustment components 2. The clamping area is used to fix the probe 4. The side adjustment component 2 includes an adjustment plate 21. A snap ring 22 is provided in the middle of the two adjustment plates 21, and a snap ring 25 is provided on the inner side of the snap ring 22.

[0025] The function of the retaining ring 25 is to limit the outer side of the probe 4. When the probe 4 is placed in the clamping area between the two side adjustment parts 2, the retaining ring 25 can fit tightly against the outer side of the probe 4, thereby firmly fixing the probe 4 in the device. This fixing method not only ensures the stability of the probe 4 during operation, but also prevents the probe 4 from shifting during use, ensuring that the probe 4 can always accurately detect the puncture position.

[0026] In addition, a fixing member 5 is provided on one side of one of the adjustment plates 21, and a puncture needle 6 is placed inside the fixing member 5. Through the connection between the adjustment plate 21 and the fixing member 5, the puncture needle 6 can maintain a relatively fixed positional relationship with the probe 4. In this way, after the probe 4 determines the puncture target position, the puncture needle 6 can accurately puncture the target area, avoiding mispuncture caused by the mismatch between the position of the puncture needle 6 and the probe 4 during the puncture process.

[0027] When performing ultrasound-guided pericardiocentesis, the pericardium is first explored with an ultrasound probe to determine and mark the puncture point.

[0028] Secure the retainer 1 to a suitable support using the connector plate 3, ensuring the device is stable. Then, install the probe 4 in the clamping area between the two side adjustment pieces 2, and secure the probe 4 firmly using the retaining ring 25.

[0029] Turn on probe 4 and recheck the marked pericardial puncture site. Based on the ultrasound image displayed on probe 4, the operator determines and confirms the specific location and depth of the pericardial effusion puncture.

[0030] After determining the target area for puncture, the puncture needle 6 is connected to one of the adjustment plates 21 via the fixing member 5 and maintains a relatively fixed position with the probe 4. The operator can then directly manipulate the puncture needle 6 to puncture the target area. During the puncture, the probe 4 continuously provides real-time ultrasound images, ensuring full visualization of the needle tip throughout the puncture process. Simultaneously, it allows for precise quantification of the needle insertion depth based on the images, avoiding myocardial or vascular damage caused by repeated needle insertions and needle tip displacement.

[0031] In summary, this auxiliary ultrasound-guided pericardiocentesis device, through its reasonable structural design, can effectively solve the problems existing in the current ultrasound-guided pericardiocentesis process, and improve the success rate and safety of the puncture.

[0032] Please see Figure 5 , Figure 6 , Figure 7 as well as Figure 8 The frame 11 has symmetrically arranged connecting ears 12 on both sides. The connecting ears 12 have through holes and a connecting shaft 26 is inserted through them to fix the side adjustment piece 2. The inner walls of the frame 11 have slides 14 on both sides, and the inner side of the slides 14 is adapted to the two sides of the plug plate 3.

[0033] The fixture 1 is composed of a frame 11. The frame 11 has symmetrically arranged connecting ears 12 on both sides. A through hole is opened at the connecting ear 12, and a connecting shaft 26 passes through the through hole. The function of the connecting shaft 26 is to fix the side adjustment component 2. Through the connecting shaft 26, the side adjustment component 2 can be firmly connected to the frame 11, ensuring that the side adjustment component 2 will not shake randomly during the use of the device, thus ensuring the stability of the overall structure of the device. The inner walls of the frame 11 are provided with slide rails 14 on both sides. The inner side of the slide rails 14 is adapted to the two sides of the plug-in plate 3, so that the plug-in plate 3 can be smoothly inserted into or pulled out of the plug-in area 13 on the frame 11 along the slide rails 14. In actual use, according to different operating scenarios and needs, the plug-in plate 3 can be inserted into the plug-in area 13 of the frame 11, and the slide rails 14 are used to guide and limit the plug-in plate 3, thereby fixing the fixture 1 to a suitable support, further enhancing the stability of the device during operation.

[0034] The probe 4 is placed at the fixator 1 and is mainly used to explore and locate the puncture site. Before performing pericardial effusion puncture, medical staff use the probe 4 to emit ultrasound signals, receive and analyze the reflected signals, and thus display an image of the patient's pericardial area on the display screen. With the help of these images, the operator can clearly understand the location, depth, extent and relationship of the pericardial effusion with surrounding tissues (such as the heart, major blood vessels, etc.), providing an accurate basis for subsequent puncture operations.

[0035] The side adjustment components 2 on both sides of the fixator 1 primarily function to secure the probe 4. Each side adjustment component 2 includes an adjustment plate 21, with a retaining ring 22 in the center of each plate 21. A retaining ring 25 is located inside each retaining ring 22. When the probe 4 is placed in the clamping area formed between the two side adjustment components 2, the retaining ring 25 will tightly fit against the outside of the probe 4, achieving a secure fixation. This fixation method effectively prevents the probe 4 from shifting during operation, ensuring that the probe 4 can always accurately probe the puncture site. One of the adjustment plates 21 has a fixing member 5 on one side, and a puncture needle 6 is placed inside the fixing member 5. Since the puncture needle 6 is connected to the adjustment plate 21 through the fixing member 5, and the adjustment plate 21 is fixed to the frame 11 through the connecting shaft 26, the puncture needle 6 and the probe 4 can maintain a relatively fixed positional relationship. After the probe 4 determines the puncture target position, the puncture needle 6 can accurately puncture the target area, avoiding mispuncture caused by the mismatch between the position of the puncture needle 6 and the probe 4 during the puncture process.

[0036] When starting the ultrasound-guided pericardial effusion puncture procedure, the medical staff first insert the insertion plate 3 into the insertion area 13 of the frame 11 along the slides 14 on both sides of the inner wall of the frame 11, and fix the fixator 1 on a suitable support to ensure the overall stability of the device.

[0037] Next, the probe 4 is installed in the clamping area between the two side adjustment parts 2, and the probe 4 is firmly fixed with the retaining ring 25. The probe 4 is opened to conduct a comprehensive exploration of the patient's pericardial area. The medical staff carefully observe the ultrasound image displayed by the probe 4 to determine the specific location, depth and relationship with the surrounding tissues of the pericardial effusion, thereby accurately locating the target area for puncture.

[0038] After the puncture target is determined, since the puncture needle 6 and the probe 4 maintain a relatively fixed positional relationship, medical staff can directly operate the puncture needle 6 to puncture the target area. During the puncture, the probe 4 continuously provides real-time ultrasound images, allowing medical staff to observe the position of the needle tip throughout the process. At the same time, the depth of needle insertion can be precisely controlled according to the images. This can avoid repeated needle insertion and needle tip displacement causing damage to the patient's myocardium or blood vessels, thereby improving the success rate and safety of the puncture.

[0039] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The plug-in plate 3 includes a plate body 33. One or more through holes 31 are provided on the surface of the plate body 33 and are adapted to the outer side of the probe 4. A pull ring 32 is provided at one end of the plate body 33 for easy pulling out of the plate body 33.

[0040] Two adjustment plates 21 are provided with a lug 27 on one side that is close to each other. A connecting shaft 26 is passed through the inside of the lug 27. The connecting shaft 26 is adapted to the connecting lug 12. A slot 23 and a strip 24 are provided on one side of the two adjustment plates 21 respectively. The slot 23 and the strip 24 are adapted to each other and are used to provide auxiliary restriction on the outside of the probe 4.

[0041] The fastener 1 is based on a frame 11. Connecting ears 12 are symmetrically arranged on both sides of the frame 11. The through holes on the connecting ears 12 allow the connecting shaft 26 to pass through, thereby fixing the side adjustment piece 2. The slides 14 on both sides of the inner wall of the frame 11 are adapted to the plug-in plate 3, providing guidance and limit for the insertion and removal of the plug-in plate 3.

[0042] The probe 4 is installed at the fixator 1. Using ultrasound technology, it can display the location, depth, extent, and relationship with surrounding tissues such as myocardium and blood vessels of the patient's pericardial effusion in real time, providing a basis for the puncture operation.

[0043] The plug plate 3 is composed of a plate body 33. One or more through holes 31 are provided on the surface of the plate body 33. These through holes 31 are adapted to the outer side of the probe 4. In actual use, after the probe 4 is installed on the device, the through holes 31 can further position and fix the probe 4, making the probe 4 more stable during operation. One end of the plate body 33 is provided with a pull ring 32. The function of the pull ring 32 is to facilitate the medical staff to pull the plate body 33. When it is necessary to fix the fixator 1 to the support, the medical staff can easily insert the plug plate 3 along the slide 14 of the frame 11 through the pull ring 32; when the operation is finished or the position of the device needs to be adjusted, the plug plate 3 can also be pulled out smoothly through the pull ring 32.

[0044] The side adjustment component 2 includes two adjustment plates 21, which are located on both sides of the fixture 1 and together form a clamping area for fixing the probe 4. The two adjustment plates 21 are provided with a lug 27 on the side that is close to each other. A connecting shaft 26 is passed through the inside of the lug 27. The connecting shaft 26 is adapted to the connecting lug 12 of the frame 11. This connection method allows the adjustment plate 21 to rotate around the connecting shaft 26 at a certain angle, which makes it easier to adjust the distance between the two adjustment plates 21, thereby better accommodating probes 4 of different sizes.

[0045] Each of the two adjusting plates 21 has a slot 23 and a locking strip 24 on one side, which are mutually compatible. When the probe 4 is placed in the clamping area between the two adjusting plates 21, the slot 23 and the locking strip 24 can cooperate to provide auxiliary restriction on the outside of the probe 4. When the locking strip 24 is embedded in the slot 23, it can further enhance the fixing effect on the probe 4, prevent the probe 4 from shifting forward or backward or left or right during operation, ensure that the probe 4 is always in an accurate position, and provide stable positioning support for the puncture operation.

[0046] One of the adjusting plates 21 has a fixing member 5 on one side, and a puncture needle 6 is placed inside the fixing member 5. Since the puncture needle 6 is connected to the adjusting plate 21 through the fixing member 5, and the adjusting plate 21 is fixed to the frame 11 through the connecting shaft 26, the puncture needle 6 and the probe 4 can maintain a relatively fixed positional relationship. After the probe 4 determines the puncture target position, the puncture needle 6 can accurately puncture the target area, avoiding mispuncture caused by the mismatch between the position of the puncture needle 6 and the probe 4 during the puncture process.

[0047] When performing ultrasound-guided pericardial effusion puncture, medical staff first hold the pull ring 32 at one end of the insertion plate 3, insert the insertion plate 3 into the insertion area 13 of the frame 11 along the slides 14 on both sides of the inner wall of the frame 11, and fix the fixator 1 on a suitable support to ensure the overall stability of the device.

[0048] Next, the medical staff adjusted the angles of the two adjusting plates 21, allowing them to rotate around the connecting shaft 26, appropriately increasing the distance between the two adjusting plates 21. The probe 4 was then placed into the clamping area between the two adjusting plates 21, ensuring that the outer side of the probe 4 matched the through hole 31 on the surface of the plate 33. Then, the two adjusting plates 21 were moved towards each other, causing the slot 23 and the locking strip 24 to engage, further securing the probe 4 and ensuring it was firmly in place and accurately positioned.

[0049] Probe 4 is activated to probe the patient's pericardial area. Based on the ultrasound images displayed on probe 4, medical staff accurately determine the specific location, depth, and relationship with surrounding tissues of the pericardial effusion, thereby identifying the target area for puncture.

[0050] After identifying the puncture target, the puncture needle 6 and probe 4 maintain a relatively fixed position, allowing medical staff to directly manipulate the puncture needle 6 to puncture the target area. During the puncture, probe 4 continuously provides real-time ultrasound images, enabling medical staff to observe the needle tip position throughout the process. Simultaneously, based on the images, they can precisely control the needle insertion depth, avoiding repeated needle insertions and needle tip displacement that could damage the patient's myocardium or blood vessels, thus improving the success rate and safety of the puncture.

[0051] Please see Figure 2 , Figure 3 , Figure 4 as well as Figure 5 The fixing member 5 includes a body 54, the top of the body 54 has a through hole, and the inner side is provided with an abutment block 51. The through hole of the body 54 is adapted to the puncture needle 6.

[0052] See Figures 11 to 14An indicator 28 is provided on one side of the main body 54. One side of the indicator 28 is connected to one of the adjustment plates 21. When it is necessary to adjust the angle of the puncture needle, the angle of the puncture needle 6 can be adjusted by moving the main body 54 along the indicator 28. One end of the main body 54 extends to one side of the adjustment plate 21 and is connected and adapted to the adjustment plate 21 by a pin. When the main body 54 rotates along the indicator 28, one end of it is restricted by the pin to prevent it from rotating on its own, which can better meet the needs of angle adjustment. At the same time, in conjunction with the scale on the indicator 28, the angle can be adjusted more precisely.

[0053] In some embodiments, the indicator 28 is arc-shaped and the surface of the indicator 28 is provided with a scale so as to indicate the angle between the puncture needle 6 and the probe 4.

[0054] In some other embodiments, a sliding post 30 is provided on the outer side of the main body 54, and a fastener 29 is provided on the sliding post 30. By operating the fastener 29, the locking between the main body 54 and the indicator 28 can be controlled. The sliding post 30 cooperates with the indicator 28, allowing the main body 54 to move smoothly along the indicator 28.

[0055] It should be noted that the above-mentioned locking means that when the main body 54 needs to rotate along the indicator 28, the main body 54 can be moved; when it is necessary to control the main body 54 from moving, such as when the angle of the puncture needle 6 is correct and there is no need to adjust the angle, the main body 54 can be limited so that it will not move along the indicator 28.

[0056] In some embodiments, the fastener 29 described above may be a structure such as a nut or screw, and the corresponding sliding post 30 may be a structure with threads at the end.

[0057] When it is necessary for the body 54 to rotate along the indicator 28, the fastener 29 is adjusted to the distal end of the sliding post 30 (i.e., away from the body 54), thus allowing the body 54 to move. When it is necessary to prevent the body 54 from moving, such as when the angle of the puncture needle 6 is correct and no angle adjustment is required, the fastener 29 can be moved along the sliding post 30 towards the body 54, thus limiting the body 54 by the fastener 29 and preventing it from moving along the indicator 28.

[0058] In one specific embodiment, the fastener 29 (nut or bolt) can be controlled to move along the sliding post 30 (threaded post of external thread) toward the body 54, thereby limiting the body 54 by the fastener 29 (nut or bolt) so that it does not move along the indicator 28.

[0059] To ensure that the fastener 29 can limit the body 54, the diameter of the fastener 29 needs to be greater than the opening width of the indicator 28.

[0060] A limiting ring 52 is provided on the inner side of the main body 54. The inner side of the limiting ring 52 is engaged with the puncture needle 6. Two screw holes are provided on the top of the limiting ring 52 in a symmetrical arrangement. A screw rod 56 is threadedly connected to one of the screw holes.

[0061] Both ends of the screw 56 are inserted and rotated on both sides of the inner wall of the body 54, and a bevel gear set 55 is provided on the outer side of one end of the screw 56 to drive the screw 56 to rotate.

[0062] The outer side of the main body 54 has a through hole and a rotating shaft is installed thereon. One end of the rotating shaft is adapted to the active bevel gear in the bevel gear set 55, which is used to drive the screw 56 to drive the limiting ring 52 to perform reciprocating linear motion, thereby controlling the puncture depth of the puncture needle 6.

[0063] A vertical shaft 53 is threaded through another screw hole of the limiting ring 52. The vertical shaft 53 is symmetrically arranged with the screw 56 and fixed to both sides of the inner wall of the body 54.

[0064] The inner walls of the frame 11 are provided with slides 14 on both sides. The slides 14 are adapted to the plug plate 3, which can be easily pulled out by the pull ring 32 to fix the fixator 1 on a suitable support. The probe 4 is installed in the clamping area formed by the two side adjustment parts 2 of the fixator 1. The locking ring 22 in the middle of the adjustment plate 21 of the side adjustment part 2 and the inner locking ring 25, as well as the locking groove 23 and locking strip 24 on one side of the adjustment plate 21, work together to limit the position of the probe 4. The probe 4 uses ultrasound technology to explore the pericardial area of ​​the patient to provide accurate information for puncture positioning.

[0065] The surface of the plate 33 of the plug plate 3 is provided with a through hole 31 that is adapted to the outside of the probe 4, which further enhances the stability of the probe 4. The pull ring 32 at one end of the plate 33 facilitates the operation of the plug plate 3 by medical staff to pull it out, so as to connect the fixator 1 with the support.

[0066] The main body 54 is the main body of the fixing member 5. A through hole is provided at the top, and an abutment block 51 is provided inside the through hole. The through hole is adapted to the puncture needle 6. The puncture needle 6 can pass through the through hole and contact the abutment block 51. The abutment block 51 can provide a certain support and limit the puncture needle 6 to prevent the puncture needle 6 from shaking randomly when not in use.

[0067] An indicator is provided on one side of the main body 54. The indicator can drive the main body 54 to rotate along the circular axis. In actual operation, after the probe 4 determines the puncture target, the medical staff can operate the indicator to make the main body 54 drive the puncture needle 6 to adjust the angle, so that the puncture needle 6 can accurately align with the puncture target area and improve the accuracy of puncture.

[0068] A limiting ring 52 is provided on the inner side of the main body 54. The inner side of the limiting ring 52 is engaged with the puncture needle 6, which can further fix the puncture needle 6. Two symmetrically arranged screw holes are opened on the top of the limiting ring 52. One screw hole is threaded to the screw rod 56, and the other screw hole is connected to the vertical shaft 53. The vertical shaft 53 is symmetrically arranged with the screw rod 56 and fixed to both sides of the inner wall of the main body 54. The vertical shaft 53 plays a guiding role to ensure that the limiting ring 52 will not deviate during the movement.

[0069] The two ends of the screw 56 are connected and can rotate on both sides of the inner wall of the body 54. A bevel gear set 55 is provided on the outer side of one end of the screw 56. A through hole is opened on the outer side of the body 54 and a rotating shaft is installed. One end of the rotating shaft is connected to the driving bevel gear in the bevel gear set 55. When the medical staff rotates the rotating shaft, the driving bevel gear drives the driven bevel gear in the bevel gear set 55 to rotate, thereby driving the screw 56 to rotate. Since the screw 56 is threadedly connected to the screw hole of the limiting ring 52, the rotation of the screw 56 will cause the limiting ring 52 to reciprocate linearly along the vertical axis 53. This movement of the limiting ring 52 drives the puncture needle 6 that is engaged with it to make a corresponding linear movement, thereby achieving precise control of the puncture depth of the puncture needle 6. The medical staff can adjust the puncture depth of the puncture needle 6 by rotating the rotating shaft according to the ultrasound image provided by the probe 4 and the actual situation, so as to avoid unnecessary harm to the patient due to excessive or shallow puncture.

[0070] During ultrasound-guided pericardial effusion puncture, medical staff first insert the insertion plate 3 along the slide rail 14 of the frame 11 using the pull ring 32, and then fix the fixator 1 to a suitable support. Next, the probe 4 is installed in the clamping area of ​​the side adjustment piece 2, and the probe 4 is firmly fixed using the retaining ring 25, the retaining groove 23, the retaining strip 24, and the through hole 31 of the insertion plate 3. The probe 4 is then opened to explore the patient's pericardial area and determine the puncture target.

[0071] Based on the location of the puncture target, the operating indicator adjusts the angle of the main body 54 so that the puncture needle 6 is aligned with the target area. Then, according to the puncture depth requirements displayed on the ultrasound image, the medical staff rotates the rotating shaft on the outside of the main body 54. The rotating shaft drives the bevel gear set 55 to rotate the screw 56. The rotation of the screw 56 pushes the limiting ring 52 to move linearly along the vertical axis 53, thereby controlling the puncture depth of the puncture needle 6 until the puncture needle 6 accurately reaches the target position, completing the puncture operation.

[0072] Example 2 like Figure 9 and Figure 10As shown, this embodiment mainly targets the fixture 1. In this case, the plug plate 3 is removed from the fixture 1, and a through hole 31 is directly opened in the frame 11 of the fixture 1 to adapt it to the probe 4, thereby meeting the needs of use.

[0073] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A device for assisting ultrasound-guided pericardial effusion puncture, comprising a fixator (1) for support, the fixator (1) being used to place a probe (4); side adjustment members (2) are provided on both sides of the fixator (1), forming a clamping area between the two side adjustment members (2) for limiting the probe (4), and a fixator (5) for placing a puncture needle (6) is provided on one side of one of the side adjustment members (2), characterized in that: The fixture (1) includes a frame (11), and a through hole is provided on one side of the frame (11) to form a plug-in area (13) for installing the plug-in plate (3); The side adjustment component (2) includes an adjustment plate (21), and a snap ring (22) is provided in the middle of each of the two adjustment plates (21). A snap ring (25) is provided on the inner side of the snap ring (22) for limiting the outer side of the probe (4). One side of one of the adjustment plates (21) is connected to the puncture needle (6) via a fastener (5) for puncturing the target area.

2. The device for assisting ultrasound-guided pericardiocentesis according to claim 1, characterized in that: The frame (11) has symmetrically arranged connecting ears (12) on both sides. The connecting ears (12) have through holes and a connecting shaft (26) is inserted through them to fix the side adjustment piece (2). The inner walls of the frame (11) are provided with slides (14) on both sides. The inner side of the slides (14) is adapted to the two sides of the plug plate (3).

3. The device for assisting ultrasound-guided pericardiocentesis according to claim 1, characterized in that: The plug-in plate (3) includes a plate body (33), and one or more through holes (31) are provided on the surface of the plate body (33) and are adapted to the outside of the probe (4). A pull ring (32) is provided at one end of the plate body (33) for easy pulling of the plate body (33).

4. The device for assisting ultrasound-guided pericardiocentesis according to claim 1, characterized in that: The two adjustment plates (21) are provided with a hanging ear (27) on one side close to each other. A connecting shaft (26) is passed through the inner side of the hanging ear (27). The connecting shaft (26) is adapted to the connecting ear (12). The two adjustment plates (21) are respectively provided with a slot (23) and a strip (24). The slot (23) and the strip (24) are adapted to each other and are used to assist in limiting the outer side of the probe (4).

5. The device for assisting ultrasound-guided pericardiocentesis according to claim 1, characterized in that: The fixing member (5) includes a body (54), the top of the body (54) is provided with a through hole, and an abutment block (51) is provided on the inner side. The through hole of the body (54) is adapted to the puncture needle (6).

6. The device for assisting ultrasound-guided pericardiocentesis according to claim 5, characterized in that: An indicator (28) is provided on one side of the body (54), and one side of the indicator (28) is connected to one of the adjustment plates (21). The body (54) moves along the indicator (28) to adjust the angle of the puncture needle (6). The indicator (28) is arc-shaped and has a scale on its surface. The outer side of the body (54) is provided with a fastener (29), which is used to control the locking of the body (54) and the indicator (28).

7. The device for assisting ultrasound-guided pericardiocentesis according to claim 5, characterized in that: The inner side of the body (54) is provided with a limiting ring (52), the inner side of the limiting ring (52) is engaged with the puncture needle (6), and the top of the limiting ring (52) has two symmetrically arranged screw holes, one of which is threaded with a screw rod (56).

8. The device for assisting ultrasound-guided pericardiocentesis according to claim 7, characterized in that: Both ends of the screw (56) are inserted and rotated on both sides of the inner wall of the body (54), and a bevel gear set (55) is provided on the outer side of one end of the screw (56) for driving the screw (56) to rotate.

9. The device for assisting ultrasound-guided pericardiocentesis according to claim 5, characterized in that: The outer side of the body (54) has a through hole and a rotating shaft is installed thereon. One end of the rotating shaft is adapted to the active bevel gear in the bevel gear set (55) to drive the screw (56) to drive the limiting ring (52) to perform reciprocating linear motion, thereby controlling the puncture depth of the puncture needle (6).

10. The device for assisting ultrasound-guided pericardiocentesis according to claim 7, characterized in that: A vertical shaft (53) is threaded through another screw hole of the limiting ring (52). The vertical shaft (53) is symmetrically arranged with the screw (56) and fixed to both sides of the inner wall of the body (54).

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