A handheld ultrasound device for guiding puncture

Abstract

The application relates to the technical field of ultrasonic examination, in particular to a palm ultrasonic device for guiding puncture, which comprises a handheld mechanism, a connecting mechanism, a display mechanism and a limiting structure. The bottom of the connecting mechanism is inserted into a cylindrical connecting groove, and the connecting mechanism can be fixed or separated from the handheld mechanism; the two ends of the connecting mechanism are hinged to the hinge seats at the two ends of the bottom of the display mechanism, so that the display mechanism can be flipped relative to the handheld mechanism. The limiting structure is installed in a hinge seat and cooperates with the connecting mechanism to limit the angle of the display mechanism relative to the connecting mechanism. The ultrasonic probe of the handheld mechanism can detect the parameters of the blood vessel to be punctured and transmit the parameters to the display mechanism through a wireless module. The screen is installed on the handheld mechanism through the connecting mechanism, and the operator can synchronously check the ultrasonic condition of the blood vessel in the display screen during the puncture. In addition, the display mechanism can adjust the angle of the screen relative to the handheld mechanism by 90 degrees to keep the front of the screen facing the operator.

Description

Technical Field

[0001] This invention relates to the field of ultrasound examination technology, and more particularly to a handheld ultrasound device for guiding puncture. Background Technology

[0002] Ultrasound-guided vascular puncture is like "precision navigation," requiring the puncture needle to be guided safely and in real time into the target blood vessel lumen to avoid damaging surrounding tissues. It needs to be real-time, clear, and easy to operate.

[0003] my country considers portable handheld ultrasound as a crucial breakthrough for the localization, intelligentization, and widespread adoption of high-end medical equipment, hence its widespread application. Handheld ultrasound refers to a portable medical ultrasound device where the main unit and probe are integrated into a single handheld unit, similar in size to a mobile phone, making it easy to control. It transmits data via cable to a mobile phone or tablet.

[0004] Handheld ultrasound can display the location, direction, depth, and diameter of blood vessels in real time, helping medical staff to accurately select puncture points and improve the success rate of puncture. Visual operation allows medical staff to clearly observe the structures around the blood vessels, avoiding accidental injury to nerves, arteries, or other important tissues and reducing the risk of complications. Operators can observe the path and depth of the puncture needle on the screen and adjust the angle and direction of puncture in a timely manner to ensure that the needle tip enters the blood vessel accurately, reducing vascular damage and bleeding.

[0005] However, existing handheld ultrasound displays are typically placed freely on the ward table by the patient's bed or held by an assistant. During ultrasound-guided arteriovenous fistula puncture, the operator is positioned to one side of the bed, with the puncture point on the patient's body. The operator holds the main unit and probe in their left hand and the puncture needle in their right. The operator needs to constantly change their field of vision (from the puncture point to the display screen, and from the display screen back to the puncture point) and even turn their head to face the screen, once or several times. This increases the inconvenience of the procedure, limits the speed of ultrasound-guided puncture, and reduces the convenience of handheld ultrasound-guided puncture. Summary of the Invention

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a handheld ultrasound device for guiding puncture, which solves the technical problems of inconvenience in operation, limitation of the speed of ultrasound-guided puncture, and reduction of the convenience of handheld ultrasound-guided puncture.

[0007] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] This invention provides a handheld ultrasound device for guiding puncture, including a handheld mechanism, a connecting mechanism, a display mechanism, and a limiting structure;

[0009] The handheld mechanism has an ultrasonic probe that can contact the human skin for ultrasonic examination, and the top of the handheld mechanism has a cylindrical connecting groove.

[0010] The bottom of the connecting mechanism is inserted into the cylindrical connecting groove, and the connecting mechanism can be fixed or separated from the handheld mechanism. The two ends of the connecting mechanism are hinged to the hinge seats at both ends of the bottom of the display mechanism, so that the display mechanism can be flipped relative to the handheld mechanism.

[0011] The limiting structure is installed in a hinge seat and cooperates with the connecting mechanism to limit the angle at which the display mechanism rotates relative to the connecting mechanism;

[0012] The ultrasonic probe of the handheld mechanism can detect the parameters of the blood vessel to be punctured and transmit them to the display mechanism via a wireless module.

[0013] Optionally, the connecting mechanism includes a plug-in assembly that engages with the cylindrical connecting groove and a connecting pin connected to the plug-in assembly. Both ends of the connecting pin are respectively inserted into the hinge seat, and one end of the connecting pin has a meshing rack that engages with the limiting structure.

[0014] The plug-in assembly is located at the bottom of the connecting pin. By releasing the engagement between the limiting structure and the connecting teeth of the connecting pin, the display mechanism can be manually flipped so that the display mechanism rotates along the axis of the connecting pin.

[0015] The limiting structure is coaxially arranged with the rotating pin, and the rotating pin and the limiting structure can be selectively engaged to position the hinge seat axially relative to the rotating pin.

[0016] Optionally, the connecting pin includes a shaft body, plug rods extending from both ends along the axial direction of the shaft body, and a connecting seat disposed at the bottom of the shaft body and detachably connected to the plug assembly;

[0017] An annular boss is provided on the end face of a plug rod near the limiting structure, extending radially outward. The outer wall of the annular boss is formed with a meshing rack that meshes with the limiting structure.

[0018] Optionally, the limiting structure includes a button, a compression spring, and a movable sleeve;

[0019] The movable sleeve is disposed in a hinge seat, the button is located at one end of the movable sleeve and protrudes outward relative to the hinge seat in normal condition, and the movable sleeve and the button are integrally formed. A meshing tooth ring that meshes with the meshing rack is provided on the other end face of the movable sleeve.

[0020] The compression spring is located inside the movable sleeve. The two ends of the compression spring abut against the inner wall of the movable sleeve and one end face of the plug rod, respectively. Pushing the button causes the movable sleeve to move axially relative to the hinge seat and compress the compression spring, thereby releasing the meshing relationship between the meshing gear ring of the movable sleeve and the meshing rack on the plug rod.

[0021] Optionally, the plug-in assembly includes a plug-in post, an axial positioning member that is radially telescopically disposed in a cylindrical connecting groove and the axial positioning member is partially disposed in the plug-in post, and also includes a circumferential positioning member disposed at the bottom of the plug-in post;

[0022] When the axial positioning member is extended, it engages with the snap-fit ​​groove on the plug-in post to circumferentially position the plug-in post.

[0023] The circumferential positioning component includes a circumferential positioning block, which is disposed at the bottom of the insertion post. The circumferential positioning block can be inserted into a positioning slot opened at the bottom of the cylindrical connecting groove to circumferentially position the insertion post.

[0024] Optionally, two circumferential positioning blocks are symmetrically arranged along the diameter direction of the plug-in post, and four positioning slots are circumferentially spaced at the bottom of the cylindrical connecting groove. The positioning slots are inserted into the circumferential positioning blocks to serve as circumferential positioning of the plug-in post.

[0025] The outer side wall of the plug is provided with a snap-fit ​​groove, and the side wall of the cylindrical connecting groove is provided with a groove. A portion of the axial positioning member is provided in the groove. The axial positioning member can move closer to or further away from the snap-fit ​​groove along the radial direction of the plug to snap-fit ​​or release the snap-fit.

[0026] Optionally, the axial positioning component includes a magnetic component, an annular limiting plate, a return spring, and an electromagnet disposed within the insertion post;

[0027] The magnetic component, the annular limiting plate, and the reset spring are all disposed within the groove;

[0028] The annular limiting plate is bolted to the inner wall of the groove and is coaxially arranged. The magnetic element is disposed in the groove and can slide along the axial direction of the groove. An annular cavity is formed between the magnetic element and the annular limiting plate. The return spring is disposed in the annular cavity, and its two ends abut against the magnetic element and the annular limiting plate, respectively. The electromagnet is installed in the snap-fit ​​groove. By turning the electromagnet on and off, the magnetic element can protrude or retract relative to the annular limiting plate along the axial direction of the groove.

[0029] Optionally, an indicator block is provided on the side wall of the ultrasonic probe.

[0030] The beneficial effects of this invention are as follows: This invention provides a handheld ultrasound device for guiding puncture. The screen is mounted on a handheld mechanism via a connecting mechanism, allowing the operator to simultaneously view the vascular ultrasound status on the screen during the puncture process. Furthermore, the display mechanism can be adjusted 90° relative to the handheld mechanism to keep the screen facing the operator, eliminating the need to consider screen placement. During ultrasound-guided vascular puncture, the puncture point and the screen are within the same field of view, eliminating the need to change the field of view or turn the head to follow the screen, thus completing the operation more efficiently and quickly.

[0031] Furthermore, the display mechanism and the handheld mechanism can be flipped to adjust the rotation angle to suit different puncture methods. Signal transmission between the handheld and display mechanisms can be achieved via built-in wireless communication technologies such as WiFi, eliminating the need for cables and avoiding the requirements for flexible circuit boards and signal transmission stability during rotation associated with wired connections. Additionally, a connecting mechanism that mates with the cylindrical connecting slot of the handheld mechanism allows the display mechanism to be selectively separated or fixed relative to the handheld mechanism, accommodating different probes and offering high versatility. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the handheld ultrasound device for guiding puncture according to the present invention (the limiting structure and the connecting mechanism are both in the locked state).

[0033] Figure 2 for Figure 1 A schematic diagram of the structure with the display mechanism and handheld mechanism separated;

[0034] Figure 3 for Figure 1 Schematic diagram of the decomposition structure;

[0035] Figure 4 for Figure 3 Schematic diagram of the central axis positioning component;

[0036] Figure 5 for Figure 3 A schematic diagram of the structure on the right side;

[0037] Figure 6 for Figure 1 A side view of the structure (showing the card slot);

[0038] Figure 7 for Figure 6 Schematic diagram of the cross-sectional structure at point AA;

[0039] Figure 8 for Figure 7Enlarged view of the circled "B" in the image;

[0040] Figure 9 This is a side sectional view of the card slot.

[0041] Explanation of reference numerals in the attached figures

[0042] 1. Handheld mechanism; 11. Cylindrical connecting groove; 12. Ultrasonic probe; 13. Card holder; 131. Wire groove; 14. Pressure cap; 15. Auxiliary positioning line; 16. Indicator mark block; 17. Handheld shell; 2. Connecting mechanism; 21. Plug-in assembly; 211. Plug-in post; 212. Axial positioning component; 2121. Magnetic component; 2123. Annular limiting plate; 2124. Return spring; 2125. Electromagnet; 213. Circumferential positioning block; 214. Positioning slot; 215. Snap-in groove; 216. Groove; 241. Meshing rack; 24. Rotating pin; 244. Connecting seat; 3. Display mechanism; 31. Hinge seat; 4. Limiting structure component; 41. Button; 42. Compression spring; 44. Movable sleeve; 441. Meshing gear ring. Detailed Implementation

[0043] To better explain and facilitate understanding of the present invention, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Figure 7 The position of the display mechanism 3 relative to the handheld mechanism 1 is defined as "above"; Figure 7 The position of the hinge seat 31, which is closer to the rotating pin 24, is defined as "left".

[0044] See Figures 1-9 As shown in the figure, an embodiment of the present invention provides a handheld ultrasound device for guiding puncture, comprising a handheld mechanism 1, a connecting mechanism 2, a display mechanism 3, and a limiting structure 4. The handheld mechanism 1 has an ultrasound probe 12 capable of contacting the human skin for ultrasound examination, and its top has a cylindrical connecting groove 11. The bottom of the connecting mechanism 2 is inserted into the cylindrical connecting groove 11, and the connecting mechanism 2 can be fixed or detached from the handheld mechanism 1. Both ends of the connecting mechanism 2 are hinged to hinge seats 31 at both ends of the bottom of the display mechanism 3, allowing the display mechanism 3 to rotate relative to the handheld mechanism 1. The limiting structure 4 is installed within a hinge seat 31 and cooperates with the connecting mechanism 2 to limit the angle at which the display mechanism 3 rotates relative to the connecting mechanism 2. The ultrasound probe 12 of the handheld mechanism 1 can detect parameters of the blood vessel to be punctured and transmit them to the display mechanism 3 via a wireless module.

[0045] In this embodiment, the screen is mounted on the handheld mechanism 1 via the connecting mechanism 2, allowing the operator to simultaneously view the vascular ultrasound information on the screen during the puncture process. Furthermore, the display mechanism 3 can be adjusted 90° relative to the handheld mechanism 1 to keep the screen facing the operator, eliminating the need to consider screen placement. During ultrasound-guided vascular puncture, the puncture point and the screen are within the same field of view, eliminating the need to change the field of view or turn the head to follow the screen, thus completing the operation more efficiently and quickly.

[0046] When the display mechanism 3 is a separate display screen, the angle between the display screen and the ultrasound probe 12 of the handheld mechanism 1 can be adjusted to change the orientation of the display screen to suit the operator's needs. This ensures that the display screen is always facing the operator and can be further rotated left and right to adjust the orientation of the display screen to suit the operator's needs for different ultrasound-guided puncture methods. The different ultrasound-guided puncture methods mainly include in-plane puncture (i.e., the plane detected by the ultrasound probe 12 is parallel to the plane containing the long axis of the blood vessel) and out-of-plane puncture (i.e., the plane detected by the ultrasound probe 12 is parallel to the plane containing the short axis of the blood vessel).

[0047] Furthermore, the display mechanism 3 and the handheld mechanism 1 can be flipped to adjust the rotation angle to suit the needs of different puncture methods. Signal transmission between the handheld mechanism 1 and the display mechanism 2 can be achieved via built-in wireless communication technology such as WiFi, eliminating the need for cables and avoiding the requirements for flexible circuit boards and signal transmission stability during rotation, as with wired connections. Additionally, the display mechanism 3 can be selectively separated from or fixed relative to the handheld mechanism 1 by using a connecting mechanism 2 that engages with the cylindrical connecting groove 11 of the handheld mechanism 1, allowing for adaptation to different probes and providing strong versatility.

[0048] Furthermore, the connecting mechanism 2 includes a plug-in assembly 21 that engages with the cylindrical connecting groove 11 and a connecting pin 24 connected to the plug-in assembly 21. Both ends of the connecting pin 24 are inserted into the hinge seat 31, and one end of the connecting pin 24 has a meshing rack 241 that engages with the limiting structure 4. The plug-in assembly 21 is located at the bottom of the connecting pin 24. By disengaging the connecting teeth of the limiting structure 4 and the connecting pin 24, the display mechanism 3 can be manually rotated, causing the display mechanism 3 to rotate along the axis of the connecting pin 24. The limiting structure 4 and the rotating pin 24 are coaxially arranged, and the rotating pin 24 and the limiting structure 4 can be selectively engaged to axially position the hinge seat 31 relative to the rotating pin 24. It is worth noting that the purpose of rotating the display mechanism 3 along the axis of the connecting pin 24 is to allow the display mechanism 3 to rotate at different angles relative to the handheld mechanism 1, adapting to clear display under different lighting conditions, and providing simple, practical, and convenient operation.

[0049] Furthermore, the connecting pin 24 includes a shaft body 242, insertion rods 243 extending from both ends along the axial direction of the shaft body 242, and a connecting seat 244 disposed at the bottom of the shaft body 242 and detachably connected to the insertion assembly 21. An annular boss is provided on the end face of one insertion rod 243 near the limiting structure 4, extending radially outward. The outer wall of the annular boss forms a meshing rack 241 that meshes with the limiting structure 4.

[0050] Furthermore, the limiting structure 4 includes a button 41, a compression spring 42, and a movable sleeve 44. The movable sleeve 44 is disposed within a hinge seat 31. The button 41 is located at one end of the movable sleeve 44 and protrudes outward relative to the hinge seat 31 in the normal state. The movable sleeve 44 and the button 41 are integrally formed. A meshing toothed ring 441 that meshes with the meshing rack 241 is provided on the other end face of the movable sleeve 44. The compression spring 42 is located within the movable sleeve 44. The two ends of the compression spring 42 abut against the inner wall of the movable sleeve 44 and one end face of the insertion rod 243, respectively. Pushing the button 41 causes the movable sleeve 44 to move axially relative to the hinge seat 31 and compress the compression spring 42, thereby disengaging the meshing relationship between the meshing toothed ring 441 of the movable sleeve 44 and the meshing rack 241 on the insertion rod 243.

[0051] It should be noted that the right end of the movable sleeve 44 is the position of the meshing gear ring 441. When the meshing gear ring 441 meshes with the meshing rack 241 on the left end of the insertion rod 243, there is still a certain gap between the right side of the insertion rod 243 and the end face of the shaft body 242 in the axial direction. The purpose of this gap is to cooperate with the axial movement of the movable sleeve 243, thereby ensuring that the meshing gear ring 441 and the meshing rack 241 can contact and mesh. In addition, when disengaging, the entire display mechanism 3 is manually rotated relative to the rotating pin 24. At this time, the movable sleeve 44 presses tightly against the compression spring 42, so that the compression spring 42 has a certain preload. When the display mechanism 1 rotates to a certain angle, the button 41 is released. Under the elastic force of the compression spring 42, the movable sleeve 44 rebounds outward, so that the meshing gear ring 441 and the meshing rack 241 can re-engage and complete the meshing, thereby realizing the circumferential positioning between the rotating pin 24 and the hinge seat 31.

[0052] It should also be noted that the movable sleeve 44 can only slide axially relative to the hinge seat 31 on the left side. There is no change in the relative position between the two in the circumferential direction. The circumferential positioning between the two can be achieved by the positioning block.

[0053] Furthermore, the button 41 and the movable sleeve 44 are integrally formed, and an annular positioning step is formed at the connection to prevent the compression spring 42 from having excessive elasticity, so as to pop the movable sleeve 44 outward and further ensure the relative position between the meshing tooth ring 441 and the meshing toothed rack 241 when rebounding.

[0054] In addition, in this embodiment, the left hinge seat 31 is detachably mounted to the bottom of the display mechanism 3 housing. A groove is provided on the bottom left side of the display mechanism 3 housing, and a retaining strip 311 is slidably mounted within the groove. A bolt mounting plate is provided at the left end of the retaining strip, and the bolt mounting plate detachably mounts the left hinge seat 31 to the bottom of the display mechanism 3 housing via bolts. This facilitates the installation and replacement of the limiting structure 4.

[0055] Furthermore, the insertion assembly 21 includes an insertion post 211, an axial positioning member 212 radially telescopically disposed within the cylindrical connecting groove 11 with a portion of the axial positioning member 212 disposed within the insertion post 211, and a circumferential positioning member disposed at the bottom of the insertion post 211. When the axial positioning member 212 is extended, it engages with the snap-fit ​​groove 215 on the insertion post 211 to circumferentially position the insertion post 211. The circumferential positioning member includes a circumferential positioning block 213 disposed at the bottom of the insertion post 211. The circumferential positioning block 213 can engage with the positioning snap-fit ​​groove 214 formed at the bottom of the cylindrical connecting groove 11 to circumferentially position the insertion post 211. In this embodiment, the insertion post 211 can be more quickly separated from and fixed to the handheld mechanism 1 through axial positioning and axial positioning. Moreover, this fixing and separating method is simple and convenient to operate. In this way, for different probes, only the same cylindrical connecting groove 11 and matching axial positioning parts 212 need to be made on the probe to connect it to any display mechanism 3 that is connected to an axial positioning part. This increases versatility and broadens the market. Furthermore, storing the display mechanism 3 separately from the handheld mechanism 1 facilitates transportation and carrying, resulting in more compact storage space.

[0056] Furthermore, two circumferential positioning blocks 213 are symmetrically arranged along the diameter of the insertion post 211. Four positioning slots 214 are spaced circumferentially at the bottom of the cylindrical connecting groove 11. The positioning slots 214 are inserted into the circumferential positioning blocks 213 to provide circumferential positioning for the insertion post 211. A snap-fit ​​groove 215 is formed on the outer wall of the insertion post 211, and a recess 216 is formed on the side wall of the cylindrical connecting groove 11. A portion of the axial positioning element 212 is provided within the recess 216. The axial positioning element 212 can move closer to or further away from the snap-fit ​​groove 215 along the radial direction of the insertion post 211 to engage or disengage. The connecting mechanism 2 rotates 90° relative to the handheld mechanism 1 along the axial direction of the cylindrical connecting groove 11. It should be noted that a USB interface is also provided on the handheld housing 17 of the handheld mechanism 1, allowing the electromagnet 2125 inside the handheld mechanism 1 to be charged via an external charging cable. Alternatively, a rechargeable battery can be used to power the electromagnet 2125 independently. The display unit 3 is powered by an external power source or a battery.

[0057] Furthermore, the axial positioning component 212 includes a magnetic component 2121, an annular limiting plate 2123, a return spring 2124, and an electromagnet 2125 disposed within the insertion post 211. The magnetic component 2121, the annular limiting plate 2123, and the return spring 2124 are all disposed within the groove 216. The annular limiting plate 2123 is bolted to the inner wall of the groove 216 and is coaxially arranged. The magnetic component 2121 is disposed in the groove 216 and can slide along the axial direction of the groove 216. An annular cavity is formed between the magnetic component 2121 and the annular limiting plate 2123. The return spring 2124 is disposed in the annular cavity. The two ends of the return spring 2124 abut against the magnetic component 2121 and the annular limiting plate 2123 respectively. The electromagnet 2125 is installed in the snap-fit ​​groove 215. By turning the electromagnet 2125 on and off, the magnetic component 2121 can protrude or retract relative to the annular limiting plate 2123 along the axial direction of the groove 216.

[0058] It should also be noted that the cross-section of the magnetic component 2121 is "T" shaped, which facilitates better cooperation with the return spring 2124.

[0059] See here. Figure 4 As shown, the axial positioning component 212 has four magnetic components 2121, four annular limiting plates 2123, and four return springs 2124. These four components are symmetrically arranged, enabling axial positioning when the insertion post 211 rotates 90° relative to the handheld mechanism 1.

[0060] Furthermore, the handheld mechanism 1 includes a handheld housing 17, a main unit, and an ultrasonic probe 12. The ultrasonic probe 12 is disposed at the bottom of the handheld housing 17, and the main unit is disposed in the inner cavity of the handheld housing 17, and the main unit is electrically connected to the ultrasonic probe 12. In addition, the display mechanism 3 and the handheld mechanism 1 are integrated, and a cable groove is provided on the handheld housing 17 of the handheld mechanism 1 to install a lanyard, so that the user can carry it directly with them, thereby improving the utilization rate.

[0061] Furthermore, the front and rear side walls of the handheld casing 17 are each equipped with a retainer 13. A pressure cap 14 is hinged to one end of each retainer 13, and the free end of the pressure cap 14 engages with the other end of the retainer 13. Multiple slots 131 are provided on the retainer 13 for holding two parallel auxiliary positioning lines 15. The purpose of having multiple slots 131 is to facilitate adjustment of the spacing between the auxiliary positioning lines 15. The pressure cap 14 is designed to facilitate quick replacement of the auxiliary positioning lines 15. When the puncture target is small or the operator lacks experience, even ultrasound-guided puncture still carries a high risk of damaging surrounding tissues. By adding two auxiliary positioning lines 15, which correspond to the two positioning lines on the display mechanism 3, the two positioning lines on the display mechanism 3 move accordingly when the probe is moved, until the two positioning lines on the display mechanism 3 are located on both sides of the blood vessel. At this point, the position between the two auxiliary positioning lines 15 is definitely between the blood vessels, resulting in better, more accurate, and more efficient guidance, thus improving blood vessel positioning and increasing the puncture success rate. To further improve the success rate of puncture and reduce the risk of damage to surrounding tissues, an acoustic shadow will appear behind the barium sulfate auxiliary positioning line 15 during ultrasound examination, where the echo is significantly weakened or disappears. This acoustic shadow is more pronounced when the auxiliary positioning line 15 is thick or perpendicular to the probe; it is relatively weaker when the line is thin or at an angle to the probe. The auxiliary positioning line 15 can be cut with scissors. Two auxiliary positioning lines 15 are placed in a double parallel configuration at the midpoint of the ultrasound probe, perpendicular to the probe's emission surface. The spacing between the two parallel auxiliary positioning lines 15 is adjusted according to the puncture target, and the double auxiliary positioning lines 15 are fixed in place with the cooperation of the groove 131 and the cap 14. During ultrasound guidance, the probe is placed above the target, and the double auxiliary positioning lines 15 form two acoustic shadows on the image. The probe position is adjusted so that the fistula vessel to be punctured is located between the two acoustic shadows. The needle is inserted into the skin, and the needle tip appears as a white spot on the ultrasound screen. The needle is pointed towards the lumen of the artery and is advanced between the two sound shadows until the needle enters the blood vessel.

[0062] Furthermore, in this embodiment, a transillumination line with added barium sulfate and other components is used. Other materials can be used as substitutes, such as metal wire, ordinary silk thread, or rubber bands, which work on the same principle and can all "block" the passage of ultrasound waves. However, these materials are not as effective at attenuating ultrasound waves as the barium sulfate auxiliary positioning line 15.1. Adding a transillumination line to assist in "ultrasound-guided puncture" is equivalent to adding a "site limiter" to the ultrasound probe, which can improve the success rate of difficult punctures (such as thin blood vessels or nerves). It is especially convenient and effective for beginners with insufficient operating experience.

[0063] Furthermore, an indicator mark block 16 is provided on the side wall of the ultrasound probe 12. The side of the ultrasound probe 12 has corresponding indicator marks, such as short lines, raised areas, or grooves, which correspond to the indicator marks on the side of the ultrasound image on the screen, and are usually located on the left side of the screen. Normally, the probe marker and the screen marker should be on the same side, that is, the direction in which the probe marker faces the patient is consistent with the direction indicated by the screen marker. The image orientation on the screen depends on the orientation of the ultrasound probe 12.

[0064] Furthermore, the ultrasonic probe 12 is either a high-frequency linear array probe or a low-frequency convex array probe.

[0065] Furthermore, the display device 3 includes at least one display screen. It should also be noted that the display device 3 can be an ultrasound screen, and can also be supplemented with a remote ultrasound screen or a mobile phone screen to provide the possibility of remote consultation. Not only can the operator clearly guide the puncture, but when consultations or simulated clinical trials / academic discussions are needed, more large display screens are required for multiple medical personnel to observe and learn simultaneously. The display screen on the handheld device 1 is also wirelessly connected to the large screen in the room, enabling simultaneous projection from multiple screens.

[0066] Furthermore, the display mechanism 3 includes an outer frame and a display screen body. The outer wall of the outer frame has a power port, and the inner wall of the outer frame has an annular groove. An integrated aviation male connector is provided in the annular groove. The display screen body is connected to an external connecting cable, and the end of the connecting cable is connected to an integrated aviation female connector that is plugged into the integrated aviation male connector. This facilitates the replacement of the display screen body. That is, when the display screen body fails, only the display screen body needs to be replaced, avoiding the need to replace the outer frame of the display mechanism 3. This makes the operation convenient and improves maintenance efficiency.

[0067] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0068] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0069] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A handheld ultrasound device for guiding puncture, characterized in that: It includes a handheld mechanism (1), a connecting mechanism (2), a display mechanism (3), and a limiting structure (4); The handheld mechanism (1) has an ultrasound probe (12) that can contact the human skin for ultrasound examination, and the top of the handheld mechanism (1) has a cylindrical connecting groove (11). The bottom of the connecting mechanism (2) is inserted into the cylindrical connecting groove (11), and the connecting mechanism (2) can be fixed or separated from the handheld mechanism (1). The two ends of the connecting mechanism (2) are hinged to the hinge seats (31) at the bottom ends of the display mechanism (3) so that the display mechanism (3) can be flipped relative to the handheld mechanism (1). The limiting structure (4) is installed in a hinge seat (31) and cooperates with the connecting mechanism (2) to limit the angle at which the display mechanism (3) flips relative to the connecting mechanism (2); The ultrasonic probe (12) of the handheld mechanism (1) can detect the parameters of the blood vessel to be punctured and transmit them to the display mechanism (3) via a wireless module.

2. The handheld ultrasound device for guiding puncture as claimed in claim 1, characterized in that: The connecting mechanism (2) includes a plug-in assembly (21) that is plugged into the cylindrical connecting groove (11) and a connecting pin (24) connected to the plug-in assembly (21). Both ends of the connecting pin (24) are inserted into the hinge seat (31), and one end of the connecting pin (24) has a meshing rack (241) that is installed in conjunction with the limiting structure (4). The plug-in assembly (21) is located at the bottom of the connecting pin (24). By releasing the meshing relationship between the limiting structure (4) and the connecting teeth of the connecting pin (24), the display mechanism (3) can be manually flipped so that the display mechanism (3) rotates along the axis of the connecting pin (24). The limiting structure (4) is coaxially arranged with the rotating pin (24), and the rotating pin (24) and the limiting structure (4) can be selectively engaged to position the hinge seat (31) axially relative to the rotating pin (24).

3. The handheld ultrasound device for guiding puncture as described in claim 2, characterized in that: The connecting pin (24) includes a shaft body (242), plug-in rods (243) extending from both ends of the shaft body (242) along the axial direction, and a connecting seat (244) disposed at the bottom of the shaft body (242) and detachably connected to the plug-in assembly (21). An annular boss is provided on the end face of a plug rod (243) near the limiting structure (4) extending radially outward, and the outer wall of the annular boss is formed with a meshing rack (241) that meshes with the limiting structure (4).

4. The handheld ultrasound device for guiding puncture as described in claim 3, characterized in that: The limiting structure (4) includes a button (41), a compression spring (42), and a movable sleeve (44). The movable sleeve (44) is disposed in a hinge seat (31). The button (41) is located at one end of the movable sleeve (44) and protrudes outward relative to the hinge seat (31) under normal conditions. The movable sleeve (44) and the button (41) are integrally formed. A meshing tooth ring (441) that meshes with the meshing rack (241) is provided on the other end face of the movable sleeve (44). The compression spring (42) is located inside the movable sleeve (44). The two ends of the compression spring (42) abut against the inner wall of the movable sleeve (44) and one end face of the plug rod (243), respectively. Pushing the button (41) causes the movable sleeve (44) to move axially relative to the hinge seat (31) and compress the compression spring (42), thereby releasing the meshing relationship between the meshing tooth ring (441) of the movable sleeve (44) and the meshing rack (241) on the plug rod (243).

5. The handheld ultrasound device for guiding puncture as described in claim 2, characterized in that: The plug-in assembly (21) includes a plug-in post (211), an axial positioning member (212) that is radially telescopically disposed in a cylindrical connecting groove (11), and the axial positioning member (212) is partially disposed in the plug-in post (211), and also includes a circumferential positioning member disposed at the bottom of the plug-in post (211); When the axial positioning member (212) is extended, it is inserted into the snap-fit ​​groove (215) on the plug-in post (211) to circumferentially position the plug-in post (211); The circumferential positioning component includes a circumferential positioning block (213), which is disposed at the bottom of the plug-in post (211). The circumferential positioning block (213) can be inserted into the positioning slot (214) opened at the bottom of the cylindrical connecting groove (11) to circumferentially position the plug-in post (211).

6. The handheld ultrasound device for guiding puncture as described in claim 5, characterized in that: Two circumferential positioning blocks (213) are symmetrically arranged along the diameter direction of the plug-in post (211). The bottom of the cylindrical connecting groove (11) is provided with four positioning slots (214) spaced apart circumferentially. The positioning slots (214) are inserted into the circumferential positioning blocks (213) to serve as the circumferential positioning of the plug-in post (211). The outer side wall of the plug (211) is provided with a snap-fit ​​groove (215), and the side wall of the cylindrical connecting groove (11) is provided with a groove (216). A portion of the axial positioning member (212) is provided in the groove (216). The axial positioning member (212) can move closer to or further away from the snap-fit ​​groove (215) along the radial direction of the plug (211) to snap or release the snap-fit.

7. The handheld ultrasound device for guiding puncture as claimed in claim 6, characterized in that: The axial positioning component (212) includes a magnetic component (2121), an annular limiting plate (2123), a return spring (2124), and an electromagnet (2125) disposed in the plug-in post (211). The magnetic component (2121), the annular limiting plate (2123), and the reset spring (2124) are all disposed within the groove (216); The annular limiting plate (2123) is bolted to the inner wall of the groove (216) and coaxially arranged. The magnetic element (2121) is disposed in the groove (216) and can slide along the axial direction of the groove (216). An annular cavity is formed between the magnetic element (2121) and the annular limiting plate (2123). The reset spring (2124) is disposed in the annular cavity. The two ends of the reset spring (2124) abut against the magnetic element (2121) and the annular limiting plate (2123) respectively. The electromagnet (2125) is installed in the snap-fit ​​groove (215). By turning the electromagnet (2125) on and off, the magnetic element (2121) can protrude or retract relative to the annular limiting plate (2123) along the axial direction of the groove (216).

8. The handheld ultrasound device for guiding puncture as claimed in claim 1, characterized in that: The handheld mechanism (1) includes a handheld housing (17), a main unit, and the ultrasonic probe (12); The ultrasonic probe (12) is disposed at the bottom of the handheld housing (17), the main unit is disposed in the inner cavity of the handheld housing (17), and the main unit is electrically connected to the ultrasonic probe (12).

9. The handheld ultrasound device for guiding puncture as claimed in claim 8, characterized in that: The front and rear side walls of the handheld casing (17) are provided with card seats (13). One end of the card seat (13) is hinged to a pressure cap (14). The free end of the pressure cap (14) is engaged with the other end of the card seat (13). The card seat (13) is provided with multiple wire grooves (131). The wire grooves (131) are used to place two auxiliary positioning lines (15) that are parallel to each other.

10. The handheld ultrasound device for guiding puncture as claimed in claim 7, characterized in that: An indicator block (16) is provided on the side wall of the ultrasonic probe (12).

Images