An ultrasound-guided minimally invasive interventional device

Abstract

The present application belongs to the technical field of puncture guiding support, and particularly relates to a minimally invasive interventional device based on ultrasonic guidance, which comprises a self-unlocking handle assembly, an unlocking assembly, a hydraulic transmission assembly, a self-locking ball head assembly, a guiding assembly and a mounting and fixing assembly, the self-unlocking handle assembly is arranged on the guiding assembly, the guiding assembly is arranged on the self-locking ball head assembly, the unlocking assembly is arranged in the self-unlocking handle assembly, the hydraulic transmission assembly is arranged on the self-locking ball head assembly, and the self-locking ball head assembly is arranged on the mounting and fixing assembly. In the scheme, when an operator pushes the adjusting ball head with hands, the fine deflection of the adjusting ball head will first control the retraction of the abutting locking pin and unlock the self-rotating ball head; when the operator removes the pushing force, the adjusting ball head will automatically reset and relock the self-rotating ball head; through the above mechanism, the stability in the puncture process can be ensured, and the device has the convenience of manual fine adjustment.

Description

Technical Field

[0001] This invention belongs to the field of puncture-guided stent technology, specifically referring to a minimally invasive interventional device based on ultrasound guidance. Background Technology

[0002] Ultrasound-guided minimally invasive interventional treatment mainly refers to determining the angle of intervention through ultrasound guidance. Specific interventional treatment methods mainly include drainage, sampling, and ablation through puncture. Generally speaking, before puncture, it is often necessary to repeatedly fine-tune the puncture angle based on ultrasound images.

[0003] Using a ball joint as a connecting component is a common choice for easy adjustment. However, setting the rotational resistance of the ball joint is a tricky and contradictory problem. If the resistance is too small, it cannot maintain its angle during non-adjustment periods and is prone to deviation during puncture. If the resistance is too large, manual fine-tuning is not possible. Most importantly, it is impossible to find an intermediate resistance value that can take into account both of the above two working conditions. Therefore, locking and unlocking operations can be used to switch working conditions.

[0004] In typical manual locking devices, positional shifts may occur during the locking process. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention proposes a technical solution that can automatically switch the locking state of the ball head. When the operator pushes the adjusting ball head by hand, the micro-movement of the adjusting ball head will first control the retraction of the anti-locking pin and unlock the rotating ball head; when the operator removes the pushing force, the adjusting ball head will automatically reset and relock the rotating ball head; through the above mechanism, the stability during the puncture process can be guaranteed, and the device can also have the convenience of manual fine adjustment.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a minimally invasive interventional device based on ultrasound guidance, including a self-unlocking handle assembly, an unlocking assembly, a hydraulic transmission assembly, a self-locking ball head assembly, a guiding assembly, and an installation and fixing assembly. The self-unlocking handle assembly is disposed on the guiding assembly, the guiding assembly is disposed on the self-locking ball head assembly, the unlocking assembly is disposed in the self-unlocking handle assembly, the hydraulic transmission assembly is disposed on the self-locking ball head assembly, and the self-locking ball head assembly is disposed on the installation and fixing assembly.

[0007] The self-unlocking handle assembly includes an offset handle, an adjusting ball head, and a return ring. The adjusting ball head is oscillating at the end of the offset handle. The return ring is sleeved on the offset handle. Elastic ropes are evenly distributed in a ring on the return ring. The ends of the elastic ropes are fixed to the inner wall of the adjusting ball head.

[0008] Under the elastic force of the elastic rope, the adjusting ball head always has the tendency to automatically return to the center. When returning to the center, the bias handle and the adjusting ball head are set coaxially. When an external force pushes the adjusting ball head, the adjusting ball head will first swing relative to the bias handle, and then drive the bias handle to move together.

[0009] Preferably, the bias handle is provided with a hydraulic chamber and a stepped hole. The adjusting ball head, which is coaxially arranged with respect to the bias handle in the free state, can swing relative to the bias handle when subjected to external force, but cannot slide axially.

[0010] Furthermore, the unlocking assembly includes a swing boss, a sliding boss, and an unlocking spring. The swing boss is fixed to the inner wall of the adjusting ball head, the sliding boss is engaged and slidably disposed in the stepped hole, and the unlocking spring is disposed between the bottom of the stepped hole and the sliding boss.

[0011] When the adjusting ball head deflects relative to the offset handle, the swing boss and the sliding boss separate, and the sliding boss slides out of the stepped hole under the elastic force of the unlocking spring; when the adjusting ball head returns to the center, the swing boss will abut against the sliding boss and press the sliding boss back into the stepped hole.

[0012] Furthermore, the hydraulic transmission assembly includes an annular cavity, a hydraulic hose, and a pressure-locking pin. The inner wall of the annular cavity is provided with sliding holes evenly distributed in a ring. The hydraulic hose is located between the hydraulic cavity and the annular cavity. The pressure-locking pin is engaged and slidably disposed in the sliding holes.

[0013] By sliding the sliding boss, the liquid pressure in the annular cavity can be controlled, thereby achieving the technical purpose of driving the extension and retraction of the pressure-locking pin.

[0014] Furthermore, the self-locking ball head assembly includes an annular bracket and a self-rotating ball head. The annular bracket is provided with evenly distributed clearance holes in an annular pattern. The clearance holes are coaxially arranged with the sliding holes. The anti-locking pin is engaged and slidably disposed in the clearance holes. The self-rotating ball head is rotatably disposed in the annular bracket.

[0015] The rotating ball head can rotate within the annular bracket. When the locking pin presses against the rotating ball head, it can lock the position of the rotating ball head. When the locking pin does not press against the rotating ball head, the rotating ball head is in the unlocked state.

[0016] Furthermore, the guiding assembly includes a guide rod and a flexible filling tube, the self-rotating ball head is provided with a central channel, the guide rod is engaged in the central channel, and the flexible filling tube is disposed in the guide rod.

[0017] Preferably, the annular cavity is fixed to the outside of the annular support, and the annular cavity, the hydraulic hose, and the hydraulic chamber are filled with liquid.

[0018] Furthermore, the mounting and fixing assembly includes a cantilever bracket and a mounting frame, wherein the annular bracket is fixed to the cantilever bracket and the cantilever bracket is disposed on the mounting frame.

[0019] Preferably, the cantilever bracket is provided with a hinge shaft, the mounting frame is provided with a hinge seat, the hinge shaft is rotatably disposed in the hinge seat, and the mounting frame is also provided with mounting holes.

[0020] By adjusting the cantilever support, the preset fixed angle of the ring support can be changed, thereby adapting to different puncture angles.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows:

[0022] (1) Under the elastic force of the elastic rope, the adjusting ball head always has the tendency to automatically return to the center. When returning to the center, the bias handle and the adjusting ball head are set coaxially. When the external force pushes the adjusting ball head, the adjusting ball head will first swing relative to the bias handle, and then drive the bias handle to move together.

[0023] (2) When the adjusting ball head is tilted relative to the offset handle, the swing boss and the sliding boss separate, and the sliding boss will slide out of the step hole under the elastic force of the unlocking spring; when the adjusting ball head returns to the center, the swing boss will abut against the sliding boss and press the sliding boss back into the step hole.

[0024] (3) By sliding the sliding boss, the liquid pressure in the annular cavity can be regulated, thereby achieving the technical purpose of driving the extension and retraction of the pressure lock pin.

[0025] (4) The rotating ball head can rotate in the ring bracket. When the locking pin is pressed against the rotating ball head, the position of the rotating ball head can be locked. When the locking pin is not pressed against the rotating ball head, the rotating ball head is in the unlocked state.

[0026] (5) By adjusting the cantilever bracket, the preset fixed angle of the ring bracket can be changed, thereby adapting to different puncture methods.

[0027] (6) When the operator pushes the adjusting ball head by hand, the micro-movement of the adjusting ball head will first control the retraction of the anti-lock pin and unlock the self-rotating ball head; when the operator removes the pushing force, the adjusting ball head will automatically reset and relock the self-rotating ball head. Attached Figure Description

[0028] Figure 1 This is a three-dimensional view of a minimally invasive interventional device based on ultrasound guidance proposed in this invention;

[0029] Figure 2 This is a front view of a minimally invasive interventional device based on ultrasound guidance proposed in this invention;

[0030] Figure 3 This is a top view of a minimally invasive interventional device based on ultrasound guidance proposed in this invention;

[0031] Figure 4 for Figure 2 A cross-sectional view along the cutting line AA;

[0032] Figure 5 for Figure 4 A magnified view of a section at point I;

[0033] Figure 6 for Figure 4 Enlarged view of a section at point II;

[0034] Figure 7 for Figure 4 A magnified view of a section at point III.

[0035] The components include: 1. Self-unlocking handle assembly; 2. Unlocking assembly; 3. Hydraulic transmission assembly; 4. Self-locking ball head assembly; 5. Guide assembly; 6. Mounting and fixing assembly; 11. Offset handle; 12. Adjusting ball head; 13. Return ring; 21. Swing boss; 22. Sliding boss; 23. Unlocking spring; 31. Annular cavity; 32. Hydraulic hose; 33. Pressure locking pin; 41. Annular bracket; 42. Rotating ball head; 51. Guide rod; 52. Flexible filling tube; 61. Cantilever bracket; 62. Mounting bracket; 111. Hydraulic cavity; 112. Stepped hole; 131. Elastic rope; 311. Sliding hole; 411. Alternating hole; 421. Center channel; 611. Hinge shaft; 621. Hinge seat; 622. Mounting hole.

[0036] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] like Figures 1-7 As shown, the present invention proposes a minimally invasive interventional device based on ultrasound guidance, including a self-unlocking handle assembly 1, an unlocking assembly 2, a hydraulic transmission assembly 3, a self-locking ball head assembly 4, a guiding assembly 5, and an installation and fixing assembly 6. The self-unlocking handle assembly 1 is disposed on the guiding assembly 5, the guiding assembly 5 is disposed on the self-locking ball head assembly 4, the unlocking assembly 2 is disposed in the self-unlocking handle assembly 1, the hydraulic transmission assembly 3 is disposed on the self-locking ball head assembly 4, and the self-locking ball head assembly 4 is disposed on the installation and fixing assembly 6.

[0040] The self-unlocking handle assembly 1 includes a bias handle 11, an adjusting ball head 12, and a return ring 13. The adjusting ball head 12 is oscillating at the end of the bias handle 11. The return ring 13 is sleeved on the bias handle 11. Elastic ropes 131 are evenly distributed in a ring on the return ring 13. The end of the elastic ropes 131 is fixed to the inner wall of the adjusting ball head 12.

[0041] Under the elastic force of the elastic rope 131, the adjusting ball head 12 always has the tendency to automatically return to center. When returning to center, the bias handle 11 and the adjusting ball head 12 are coaxially arranged. When the external force pushes the adjusting ball head 12, the adjusting ball head 12 will first swing relative to the bias handle 11, and then drive the bias handle 11 to move together.

[0042] The bias handle 11 is provided with a hydraulic chamber 111 and a stepped hole 112. The adjusting ball head 12, which is coaxially arranged with respect to the bias handle 11 in the free state, can swing relative to the bias handle 11 when subjected to external force, but cannot slide axially.

[0043] The unlocking component 2 includes a swing boss 21, a sliding boss 22 and an unlocking spring 23. The swing boss 21 is fixed to the inner wall of the adjusting ball head 12. The sliding boss 22 is engaged and slidably disposed in the stepped hole 112. The unlocking spring 23 is disposed between the bottom of the stepped hole 112 and the sliding boss 22.

[0044] When the adjusting ball head 12 is tilted relative to the offset handle 11, the swing boss 21 and the sliding boss 22 separate, and the sliding boss 22 slides out of the stepped hole 112 under the elastic force of the unlocking spring 23; when the adjusting ball head 12 returns to the center, the swing boss 21 will abut against the sliding boss 22 and press the sliding boss 22 back into the stepped hole 112.

[0045] The hydraulic transmission assembly 3 includes an annular cavity 31, a hydraulic hose 32, and a pressure locking pin 33. Sliding holes 311 are evenly distributed in a ring on the inner wall of the annular cavity 31. The hydraulic hose 32 is located between the hydraulic cavity 111 and the annular cavity 31. The pressure locking pin 33 is engaged and slidably located in the sliding hole 311.

[0046] By sliding the sliding boss 22, the liquid pressure in the annular cavity 31 can be regulated, thereby achieving the technical purpose of driving the extension and retraction of the pressure-locking pin 33.

[0047] The self-locking ball head assembly 4 includes an annular bracket 41 and a self-rotating ball head 42. The annular bracket 41 is provided with a ring of evenly distributed clearance holes 411. The clearance holes 411 are coaxially arranged with the sliding holes 311. The pressure locking pin 33 is engaged and slidably disposed in the clearance holes 411. The self-rotating ball head 42 is rotatably disposed in the annular bracket 41.

[0048] The rotating ball head 42 can rotate in the annular bracket 41. When the locking pin 33 abuts against the rotating ball head 42, it can lock the position of the rotating ball head 42. When the locking pin 33 does not abut against the rotating ball head 42, the rotating ball head 42 is in the unlocked state.

[0049] The guide assembly 5 includes a guide rod 51 and a flexible filling tube 52. The rotating ball head 42 is provided with a central channel 421. The guide rod 51 is engaged in the central channel 421, and the flexible filling tube 52 is disposed in the guide rod 51.

[0050] The annular cavity 31 is fixed to the outside of the annular support 41, and the annular cavity 31, the hydraulic hose 32 and the hydraulic cavity 111 are filled with liquid.

[0051] The mounting and fixing assembly 6 includes a cantilever bracket 61 and a mounting frame 62. The annular bracket 41 is fixed to the cantilever bracket 61, and the cantilever bracket 61 is mounted on the mounting frame 62.

[0052] The cantilever bracket 61 is provided with a hinge shaft 611, and the mounting bracket 62 is provided with a hinge seat 621. The hinge shaft 611 is rotatably disposed in the hinge seat 621, and the mounting bracket 62 is also provided with a mounting hole 622.

[0053] By adjusting the cantilever bracket 61, the preset fixed angle of the annular bracket 41 can be changed, thereby adapting to different puncture angles.

[0054] In practical use, the user first needs to install the mounting bracket 62 on the external robotic arm or fixed base through the mounting hole 622, and then adjust the angle and position of the cantilever bracket 61 roughly according to the different puncture directions and lock it in place.

[0055] Then, by rotating the self-rotating ball head 42 within the annular support 41, the puncture angle is fine-tuned. Simultaneously, auxiliary ultrasound images serve as guidance to help the doctor ultimately determine the precise angle required for puncture. The adjustment process is as follows:

[0056] Push the adjusting ball head 12 in any direction by hand. Since the rotating ball head 42 is locked at this time, the guide rod 51 and the offset handle 11 are fixed. The adjusting ball head 12 will deflect relative to the offset handle 11. When the adjusting ball head 12 deflects, the swing boss 21 gradually moves away from the sliding boss 22. Under the elastic force of the unlocking spring 23, the sliding boss 22 slides out of the stepped hole 112. At this time, the pressure in the annular cavity 31 decreases and the locking pin 33 retracts.

[0057] After the locking pin 33 leaves the rotating ball head 42, the rotating ball head 42 is in the unlocked state. At this time, the adjusting ball head 12 will move with the offset handle 11, thereby controlling the rotation of the rotating ball head 42 and the guide rod 51.

[0058] When the pushing force on the adjusting ball head 12 is removed, the adjusting ball head 12 will return to the position coaxial with the bias handle 11 under the elastic force of the elastic rope 131. During this process, the swing boss 21 presses against the sliding boss 22 again, and makes it retract into the stepped hole 112 overcoming the elastic force of the unlocking spring 23. It also pushes the pressing locking pin 33 to extend through hydraulic transmission, thereby locking the rotating ball head 42.

[0059] In summary, when the operator pushes the adjusting ball head 12 by hand, the slight sway of the adjusting ball head 12 will first control the retraction of the pressure locking pin 33 and unlock the rotating ball head 42; when the operator removes the pushing force, the adjusting ball head 12 will automatically reset and relock the rotating ball head 42.

[0060] Guided by ultrasound images and through repeated fine-tuning of the angle of the guide rod 51, once the guide rod 51 is adjusted, the puncture needle is inserted into the flexible filling tube 52, and puncture and other operations can be performed. During this process, stability is ensured because the self-rotating ball head 42 is in a locked state.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A minimally invasive interventional device based on ultrasound guidance, characterized in that: The assembly includes a self-unlocking handle assembly (1), an unlocking assembly (2), a hydraulic transmission assembly (3), a self-locking ball joint assembly (4), a guide assembly (5), and a mounting and fixing assembly (6). The self-unlocking handle assembly (1) is located on the guide assembly (5), the guide assembly (5) is located on the self-locking ball joint assembly (4), the unlocking assembly (2) is located in the self-unlocking handle assembly (1), the hydraulic transmission assembly (3) is located on the self-locking ball joint assembly (4), and the self-locking ball joint assembly (4) is located on the mounting and fixing assembly (6). The self-unlocking handle assembly (1) includes a bias handle (11), an adjusting ball head (12), and a return ring (13). The adjusting ball head (12) is swung at the end of the bias handle (11). The return ring (13) is sleeved on the bias handle (11). Elastic ropes (131) are evenly distributed in a ring on the return ring (13). The end of the elastic ropes (131) is fixed to the inner wall of the adjusting ball head (12). The bias handle (11) is provided with a hydraulic chamber (111) and a stepped hole (112). The adjusting ball head (12) is coaxially arranged with respect to the bias handle (11) in the free state. When subjected to external force, it can swing relative to the bias handle (11), but cannot slide axially. The unlocking component (2) includes a swing boss (21), a sliding boss (22) and an unlocking spring (23). The swing boss (21) is fixed to the inner wall of the adjusting ball head (12). The sliding boss (22) is engaged and slidably disposed in the stepped hole (112). The unlocking spring (23) is disposed between the bottom of the stepped hole (112) and the sliding boss (22). The hydraulic transmission assembly (3) includes an annular cavity (31), a hydraulic hose (32), and a pressure locking pin (33). The inner wall of the annular cavity (31) is provided with sliding holes (311) evenly distributed in an annular pattern. The hydraulic hose (32) is located between the hydraulic cavity (111) and the annular cavity (31). The pressure locking pin (33) is engaged and slidably located in the sliding hole (311). The self-locking ball head assembly (4) includes an annular bracket (41) and a self-rotating ball head (42). The annular bracket (41) is provided with a ring of evenly distributed clearance holes (411). The clearance holes (411) are coaxially arranged with the sliding holes (311). The pressure locking pin (33) is engaged and slidably disposed in the clearance holes (411). The self-rotating ball head (42) is rotatably disposed in the annular bracket (41).

2. The ultrasound-guided minimally invasive interventional device according to claim 1, characterized in that: The guiding component (5) includes a guide rod (51) and a flexible filling tube (52). The self-rotating ball head (42) is provided with a central channel (421). The guide rod (51) is engaged in the central channel (421), and the flexible filling tube (52) is disposed in the guide rod (51).

3. The ultrasound-guided minimally invasive interventional device according to claim 2, characterized in that: The annular cavity (31) is fixed to the outside of the annular support (41), and the annular cavity (31), the hydraulic hose (32) and the hydraulic cavity (111) are filled with liquid.

4. The ultrasound-guided minimally invasive interventional device according to claim 3, characterized in that: The mounting and fixing assembly (6) includes a cantilever bracket (61) and a mounting frame (62). The annular bracket (41) is fixed to the cantilever bracket (61), and the cantilever bracket (61) is mounted on the mounting frame (62).

5. The ultrasound-guided minimally invasive interventional device according to claim 4, characterized in that: The cantilever bracket (61) is provided with a hinge shaft (611), the mounting bracket (62) is provided with a hinge seat (621), the hinge shaft (611) is rotatably disposed in the hinge seat (621), and the mounting bracket (62) is also provided with a mounting hole (622).

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