A multi-tube controllable handle assembly and method of use thereof

Abstract

The application discloses a multi-tube controllable handle assembly and a use method thereof. The handle assembly comprises a handle and a catheter. The handle comprises a shell and a power mechanism. The power mechanism is installed on the shell. The catheter comprises a first catheter, a second catheter and a third catheter. The power mechanism comprises a first propelling device, a second propelling device and a third propelling device. The propelling devices are respectively connected with the corresponding catheters to drive the catheters to move along the axial direction. The first catheter, the second catheter and the third catheter are sequentially sleeved from outside to inside. The third catheter is used for connecting an implant. In a first state, the implant is located in the first catheter. The first catheter is retracted to expose the implant. In a second state, the first catheter is reversely extended to completely deploy the implant. In a third state, the second catheter moves along the axial direction to fix the implant on a blood vessel. In a fourth state, the third catheter moves along the axial direction to release the implant from the third catheter.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a multi-tube controllable handle assembly and its method of use. Background Technology

[0002] Cardiovascular and cerebrovascular diseases are the leading cause of death worldwide. Interventional surgery, due to its minimally invasive nature and high efficacy, has become the primary treatment for these diseases. Data shows that in 2020, my country saw 968,651 patients undergoing single coronary artery interventional treatment, ranking first in the world. Vascular closure refers to the process of closing the cavity created at the puncture site during minimally invasive cardiovascular diagnosis and interventional surgery to prevent blood loss. Typically, vascular closure can be achieved through four methods: manual compression, closure aids, surgical suturing, and vascular closure devices.

[0003] Manual compression hemostasis is the most traditional and currently the most commonly used method for arterial hemostasis. Its advantages lie in its economy and relative reliability; when other methods fail, this method is ultimately the only recourse. However, its disadvantages are also significant: it is time-consuming and laborious, and it exacerbates patient suffering. The compression hemostasis time after catheter removal is typically around 25 minutes. After compression hemostasis, pressure bandaging is required for 6–12 hours, followed by 18–24 hours of bed rest. In cases of patient obesity or puncture sites that are too high or too low, complications such as difficulty in compression, local hematoma, pseudoaneurysm, arteriovenous fistula, vagal reflex, and lower extremity deep vein thrombosis may occur. For large-diameter vessels, sutures and closure devices are necessary. Especially for surgeries such as valve implantation, in 2019, there were 9.1 million patients with tricuspid regurgitation, 10.3 million with mitral regurgitation, 3.8 million with aortic regurgitation, and 4.3 million with aortic stenosis in China, respectively. This shows that there is an urgent need to update the surgical techniques for vascular closure. According to Frost & Sullivan data, the number of vascular closure surgeries in China increased from 107,500 in 2015 to 274,300 in 2019, and is expected to further increase to 3,782,100 by 2030.

[0004] When using vascular closure devices, a suitable delivery system is required. For large-diameter vascular closure devices, the corresponding delivery systems are often bulky and cumbersome. For example, when using Proglide suture-type closure devices, the handle structure is complex, requiring multiple operational steps and demanding a high level of skill from the surgeon, resulting in a long learning curve. Even conventional vascular closure device delivery handles present several problems, such as difficulty in manipulating various components, ergonomically unfriendly handle size, and inaccurate positioning of the internal catheter displacement. These issues increase surgical risks. Therefore, there is a need to develop a simple and streamlined delivery handle to reduce surgical risks. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the cumbersome operation steps of the handle in the prior art, and to provide a multi-tube controllable handle assembly and its usage method.

[0006] The present invention solves the above-mentioned technical problems by means of the following technical solution: a multi-tube controllable handle assembly, the handle assembly including a handle and a conduit, the handle including a housing and a power mechanism, the power mechanism being mounted on the housing;

[0007] The conduit includes a first conduit, a second conduit, and a third conduit. The power mechanism includes a first propulsion device, a second propulsion device, and a third propulsion device. The first propulsion device is connected to the first conduit to drive the first conduit to move along the axial direction of the first conduit. The second propulsion device is connected to the second conduit to drive the second conduit to move along the axial direction of the second conduit. The third propulsion device is connected to the third conduit to drive the third conduit to move along the axial direction of the third conduit.

[0008] The first catheter, the second catheter, and the third catheter are sequentially sleeved from the outside to the inside, and the third catheter is used to connect the implant.

[0009] In the first state, the implant is located inside the first catheter, and the retraction of the first catheter can expose the implant.

[0010] In the second state, the first catheter extends in the reverse direction, allowing the implant to fully deploy.

[0011] In the third state, the movement of the second catheter along its axial direction enables the implant to be fixed to the blood vessel.

[0012] In the fourth state, movement of the third catheter along its axial direction can detach the implant from the third catheter.

[0013] In this design, a first propulsion device drives the first catheter to move axially, allowing it to extend and retract. In the first state, the retraction of the first catheter exposes the implant hidden within it, which expands to prepare for subsequent deployment. In the second state, the first catheter extends and rests on the exposed implant, allowing it to fully deploy. In the third state, the second propulsion device moves the second catheter to fix the implant to the blood vessel. In the fourth state, the third propulsion device moves the third catheter to release the implant. The mechanical structure of the handle is used to adjust the implant. Through the coordination of the propulsion devices in different states, the implant can be precisely deployed and retracted during the procedure, maintaining its fixation within the blood vessel. The handle assembly in this design requires only four steps to fix the implant to the blood vessel, simplifying the operation and making it easier for doctors to operate. Furthermore, each propulsion device of the power mechanism corresponds one-to-one with each catheter, resulting in smoother operation, reduced operational errors, and lower surgical risks.

[0014] Preferably, in the third state, the second catheter extends to secure the implant to the blood vessel; and / or, in the fourth state, the third catheter extends to detach the implant from the third catheter.

[0015] In this approach, the implant is fixed and released by extending the catheter. The handle can more accurately position and adjust the implant's location. Compared to retracting the catheter, extending the catheter can better control the implant's movement trajectory, thus achieving a more precise treatment effect. Moreover, extending the catheter can more conveniently and quickly complete the fixation and release, greatly shortening the operation time and reducing the complexity of the surgery.

[0016] Preferably, the first propulsion device includes a gear and a rack, the gear being mounted on the housing, the first conduit being fixed on the rack, and the gear and the rack engaging for transmission.

[0017] In this design, the first propulsion device of the handle adopts a gear and rack transmission method, wherein the first conduit is fixed on the rack. Due to the meshing transmission mechanism of the gear and rack, power can be transmitted to the first conduit very effectively, thereby enabling the handle to propel the implant more stably.

[0018] Preferably, the first propulsion device includes a first rotating wheel, the gear is fixed on the first rotating wheel, the first rotating wheel is mounted on the housing, and the first rotating wheel can drive the gear to rotate.

[0019] In this design, the structure utilizes a first rotating wheel and gears to move the first propulsion device. Since the first rotating wheel is mounted on the housing, it is easier for the user to control the movement of the first rotating wheel, thus improving efficiency and stability.

[0020] Preferably, the housing includes a transparent area corresponding to the first conduit, and the rack has a first pointer in the transparent area.

[0021] In this design, the structure helps users accurately observe the position and status of the first catheter, thereby better controlling the distance the first catheter extends or retracts.

[0022] Preferably, the second propulsion device includes a second rotating wheel and a second screw. The second rotating wheel is fixed on the housing. The second rotating wheel and the second screw are respectively provided with mutually cooperating internal threads and external threads. The second conduit is fixed on the second screw. The second rotating wheel rotates to drive the second screw to move along the axial direction of the second conduit.

[0023] And / or, the third propulsion device includes a third rotating wheel and a third screw, the third rotating wheel is fixed on the housing, the third rotating wheel and the third screw are respectively provided with mutually cooperating internal threads and external threads, the third guide tube is fixed on the third screw, and the third rotating wheel rotates to drive the third screw to move along the axial direction of the third guide tube.

[0024] In this design, the second and third propulsion devices employ a screw and thread transmission method, which allows for free rotation in the axial direction, thus enabling more flexible propulsion of the conduit and increasing the adaptability and flexibility of the handle during use. Moreover, this transmission method is more accurate, enabling more precise positioning of the conduit.

[0025] Preferably, the second rotating wheel is provided with a scale, and the housing is provided with a second pointer at the second rotating wheel;

[0026] And / or, the third rotating wheel is provided with a scale, and the housing is provided with a third pointer at the third rotating wheel.

[0027] In this design, the structure allows users to easily grasp the rotation angles of the second and third rollers by observing the rollers and scale, thereby enabling accurate control of the catheter's displacement.

[0028] Preferably, the first propulsion device, the second propulsion device, and the third propulsion device are distributed sequentially on the housing from the open end of the handle to the tail end of the handle.

[0029] In this design, the first propulsion device needs to extend and retract with a large adjustment range, while the fixing and disengagement of the second and third propulsion devices are small-range fine adjustments. This positional distribution makes the handle more stable and better balanced during propulsion, thus enabling smoother control of the handle, which is more ergonomic.

[0030] This invention discloses a method of using the above-mentioned handle assembly, which includes the following steps:

[0031] Control the first propulsion device to retract the first catheter so that the implant is exposed in the first catheter;

[0032] Control the first propulsion device to extend the first catheter in the reverse direction so that the implant can be fully deployed;

[0033] The second propulsion device is controlled to move the second catheter so that the implant is fixed on the blood vessel;

[0034] Control the third propulsion device to move the third catheter so as to detach the implant from the third catheter.

[0035] In this approach, the implant can be fixed to the blood vessel in just four steps. The required steps and teaching period are relatively short, making it easy to master and apply, which greatly shortens the operation time and improves the safety of the operation.

[0036] Preferably, the step of controlling the second propulsion device to move the second conduit includes the step of: controlling the second propulsion device to extend the second conduit;

[0037] And / or, the step of controlling the third propulsion device to move the third conduit includes the step of: controlling the third propulsion device to extend the third conduit.

[0038] In this approach, both the fixation of the implant to the blood vessel and the release of the implant are performed using an extended catheter. This allows the handle to more accurately position and adjust the implant's location. Compared to retracting the catheter, extending the catheter provides better control over the implant's trajectory, resulting in a more precise treatment outcome. Furthermore, extending the catheter makes fixation and release more convenient and quick, significantly reducing the operation time.

[0039] The positive and progressive effects of this invention are as follows: The first propulsion device drives the first catheter to move axially, allowing it to extend and retract. In use, in the first state, the retraction of the first catheter exposes the implant hidden within it. The exposed implant expands to a certain extent, preparing for subsequent deployment. In the second state, the first catheter extends and presses against the exposed implant, allowing it to fully deploy. In the third state, the second propulsion device moves the second catheter to fix the implant to the blood vessel. In the fourth state, the third propulsion device moves the third catheter to release the implant. The mechanical structure of the handle itself is used to adjust the implant. Through the coordination between the propulsion devices in different states, the implant can be precisely deployed and retracted during surgery, maintaining its fixation within the blood vessel. The handle assembly of this solution requires only four steps to fix the implant to the blood vessel, simplifying the operation and facilitating physician operation. Furthermore, each propulsion device of the power mechanism and each catheter corresponds one-to-one, resulting in smoother operation, reduced operational errors, and thus lower surgical risks. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the internal structure of the multi-tube controllable handle assembly of Embodiment 1 of the present invention.

[0041] Figure 2 This is a schematic diagram of the handle of Embodiment 1 of the present invention.

[0042] Figure 3 This is a schematic diagram of the internal structure of the handle in Embodiment 1 of the present invention.

[0043] Figure 4 This is a magnified view of a portion of the handle structure of Embodiment 1 of the present invention.

[0044] Figure 5 This is a schematic diagram of the rack structure in Embodiment 1 of the present invention.

[0045] Figure 6 This is a schematic diagram of the structure of the first rotating wheel and gear in Embodiment 1 of the present invention.

[0046] Figure 7 This is a schematic diagram of the anchoring structure before it is fixed according to Embodiment 1 of the present invention.

[0047] Figure 8 This is a schematic diagram of the anchoring structure after it is fixed according to Embodiment 1 of the present invention.

[0048] Figure 9 This is a schematic diagram of the implant and release structure of Embodiment 1 of the present invention.

[0049] Figure 10 This is a method of using the multi-tube controllable handle assembly according to Embodiment 1 of the present invention.

[0050] Figure 11 This is a schematic diagram of the handle structure of Embodiment 2 of the present invention.

[0051] Explanation of reference numerals in the attached figures

[0052] Casing 1

[0053] Transparent area 11

[0054] First propulsion device 21

[0055] First Rotor 211

[0056] Gear 212

[0057] rack 213

[0058] Second propulsion device 22

[0059] Second Rotating Wheel 221

[0060] Second screw 222

[0061] Third propulsion device 23

[0062] Third Rotation 231

[0063] Third screw 232

[0064] Number Mark 24

[0065] First catheter 31

[0066] Second catheter 32

[0067] Third catheter 33

[0068] Tail end 41

[0069] Open end 42

[0070] First pointer 43

[0071] Second pointer 44

[0072] Third pointer 45

[0073] Implant 51

[0074] Anchoring structure 52

[0075] Anchor foot 521

[0076] Release structure 53 Detailed Implementation

[0077] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0078] Example 1

[0079] like Figures 1-6 As shown, this embodiment discloses a multi-tube controllable handle assembly. The handle assembly includes a handle and catheters. The handle includes a housing 1 and a power mechanism, with the power mechanism mounted on the housing 1. The catheters include a first catheter 31, a second catheter 32, and a third catheter 33. The power mechanism includes a first propulsion device 21, a second propulsion device 22, and a third propulsion device 23. The first propulsion device 21 is connected to the first catheter 31 to drive the first catheter 31 to move along the axial direction of the first catheter 31. The second propulsion device 22 is connected to the second catheter 32 to drive the second catheter 32 to move along the axial direction of the second catheter 32. The third propulsion device 23 is connected to the third catheter 33 to drive the third catheter 33 to move along the axial direction of the third catheter 33. The first catheter 31, the second catheter 32, and the third catheter 33 are sequentially sleeved from the outside to the inside, and the third catheter 33 is used to connect an implant.

[0080] In the first state, the implant is located inside the first catheter 31, and the retraction of the first catheter 31 exposes the implant; in the second state, the extension of the first catheter 31 unfolds the implant; in the third state, the movement of the second catheter 32 along its axis fixes the implant to the blood vessel; and in the fourth state, the movement of the third catheter 33 along its axis detaches the implant from the third catheter 33.

[0081] Specifically, in this embodiment, the first state is the initial state of the handle assembly, with one end of the third catheter 33 connected to the implant inside the first catheter 31 so that the implant is located inside the first catheter 31; the second state is the implant exposed state, that is, the implant is exposed and has a certain degree of expansion but has not fully unfolded; the third state is the implant unfolded state, at which time the implant has fully unfolded and needs to be fixed to the blood vessel; the fourth state is the implant fixed state, which needs to be further released to release the implant.

[0082] In this embodiment, the first propulsion device 21 drives the first catheter 31 to move axially, allowing the first catheter 31 to extend and retract. In use, in the first state, the retraction of the first catheter 31 exposes the implant hidden within it, causing it to expand to a certain extent in preparation for subsequent deployment. In the second state, the first catheter 31 extends and rests against the exposed implant, allowing it to fully deploy. In the third state, the second propulsion device 22 drives the second catheter 32 to move, thus fixing the implant to the blood vessel. In the fourth state, the third propulsion device 23 drives the third catheter 33 to move, releasing the implant. The mechanical structure of the handle itself is used to adjust the implant. Through the coordination between the propulsion devices in different states, the implant can be precisely deployed and retracted during surgery, maintaining its fixation within the blood vessel. This handle assembly requires only four steps to fix the implant to the blood vessel, simplifying the operation and facilitating physician operation. Furthermore, each propulsion device of the power mechanism corresponds one-to-one with each catheter, resulting in smoother operation, reduced operational errors, and thus lower surgical risks.

[0083] Specifically, in the third state, the second catheter 32 extends to fix the implant to the blood vessel; in the fourth state, the third catheter 33 extends to detach the implant from the third catheter 33. By extending the catheter to fix and detach the implant, the handle can more accurately position and adjust the implant's location. Compared to retracting the catheter, extending the catheter allows for better control of the implant's trajectory, resulting in a more precise treatment effect. Moreover, extending the catheter makes fixation and detachment more convenient and quick, greatly shortening the operation time and reducing the complexity of the surgery.

[0084] In other alternative embodiments, in the third state, the second catheter 32 may also be configured to retract to secure the implant to the blood vessel.

[0085] In other alternative embodiments, in the fourth state, the third catheter 33 may also be configured to retract to disengage the implant from the third catheter 33.

[0086] like Figures 3-6As shown, the first propulsion device 21 includes a gear 212 and a rack 213. The gear 212 is mounted on the housing 1, and the first conduit 31 is fixed on the rack 213. The gear 212 and rack 213 mesh and drive each other. The first propulsion device 21 of this handle uses a gear 212 and rack 213 transmission method, where the first conduit 31 is fixed on the rack 213. Due to the meshing transmission mechanism of the gear 212 and rack 213, power can be transmitted to the first conduit 31 very effectively, thereby enabling the handle to propel the implant more stably. Of course, in other alternative embodiments, the first propulsion device 21 can also adopt a mechanical propulsion form, that is, including a pusher and an inner rod disposed on the housing. The first conduit 31 is fixedly connected to the inner rod, and the movement of the pusher can drive the inner rod to move along its axial direction, thereby realizing the extension or retraction of the first conduit 31.

[0087] like Figure 3 and Figure 4 As shown, the first propulsion device 21 includes a first rotating wheel 211, and a gear 212 fixed on the first rotating wheel 211. The first rotating wheel 211 is mounted on the housing 1, and the first rotating wheel 211 can drive the gear 212 to rotate. The movement of the first propulsion device 21 is realized by using the first rotating wheel 211 and the gear 212. Since the first rotating wheel 211 is mounted on the housing 1, it is convenient for the user to control the movement of the first rotating wheel 211, improving efficiency and stability.

[0088] like Figures 2-4 As shown, the housing 1 includes a transparent area 11, which corresponds to the first conduit 31. A rack 213 has a first pointer 43 located in the transparent area 11. This structure helps the user to accurately observe the position and status of the first conduit 31, thereby better controlling the extension or retraction distance of the first conduit 31.

[0089] Specifically, in this embodiment, the transparent area 11 is transparent glass, through which the position of the first conduit 31 can be observed. Of course, in other alternative embodiments, the transparent area 11 can also be made of other transparent materials, or it can be a perforation on the outer shell.

[0090] Specifically, such as Figure 3 As shown, the second propulsion device 22 includes a second rotating wheel 221 and a second screw 222. The second rotating wheel 221 is fixed on the housing 1. The second rotating wheel 221 and the second screw 222 are respectively provided with mutually cooperating internal threads and external threads. The second guide tube 32 is fixed on the second screw 222. The second rotating wheel 221 rotates to drive the second screw 222 to move along the axial direction of the second guide tube 32.

[0091] Similar to the second propulsion device 22, the third propulsion device 23 includes a third rotating wheel 231 and a third screw 232. The third rotating wheel 231 is fixed on the housing 1. The third rotating wheel 231 and the third screw 232 are respectively provided with mutually cooperating internal threads and external threads. The third guide tube 33 is fixed on the third screw 232. The third rotating wheel 231 rotates to drive the third screw 232 to move along the axial direction of the third guide tube 33.

[0092] In this embodiment, the second propulsion device 22 and the third propulsion device 23 adopt a screw and thread transmission method, which can rotate freely in the axial direction, thereby propelling the conduit more flexibly and increasing the adaptability and flexibility of the handle in use; moreover, this transmission method is more accurate and can achieve more precise positioning of the conduit.

[0093] like Figure 2 As shown, both the second rotating wheel 221 and the third rotating wheel 231 have scales. The housing 1 has a second pointer 44 at the second rotating wheel 221 and a third pointer 45 at the third rotating wheel 231. By observing the second rotating wheel 221, the third rotating wheel 231, and the scales, the user can easily grasp the rotation angle of the second rotating wheel 221 and the third rotating wheel 231, thereby accurately controlling the displacement of the catheter.

[0094] like Figure 1 As shown, the first propulsion device 21, the second propulsion device 22, and the third propulsion device 23 are sequentially distributed on the housing 1 from the opening end 42 of the handle to the tail end 41 of the handle. The first propulsion device 21 needs to extend and retract, with a large adjustment range, while the fixing and unfixing of the second propulsion device 22 and the third propulsion device 23 are small-range fine adjustments. This positional distribution makes the handle more stable and has better balance during propulsion, thus allowing for smoother control of the handle and making the handle more ergonomic. Of course, in other alternative embodiments, the positions of the first propulsion device 21, the second propulsion device 22, and the third propulsion device 23 can also be other distributions.

[0095] In this embodiment, it should be noted that the extension or retraction of the catheter is relative to the open end 42 of the handle.

[0096] Specifically, in this embodiment, the end 41 of the handle is provided with an opening to facilitate the insertion of a guide wire. The guide wire is connected to the implant so that the implant has a guiding shape in various states, thereby better controlling the movement trajectory of the implant.

[0097] like Figure 7 and Figure 8As shown, in this embodiment, the end of the second catheter 32 is connected to an anchoring structure 52, which has an anchoring foot 521. The end of the second catheter 32 abuts against the end face of the anchoring structure (the end away from the anchoring foot 521). In the third state, after the second catheter 32 extends, it pushes the anchoring structure 52 so that the anchoring foot 521 engages with the adipose tissue on the outer wall of the blood vessel. At this time, the blood vessel is closed by the implant 51 (membrane structure) and the anchoring structure 52, thereby fixing the implant 51 to the blood vessel.

[0098] like Figure 9 As shown, the distal end of the third catheter 33 includes a release structure 53, which is a highly elastic metal spherical spring, specifically a nickel-titanium alloy. The release structure 53 covers the connecting rod portion of the implant 51. In the fourth state, the third catheter 33 is located inside the second catheter 32. Due to the constraint of the wall cavity of the second catheter 32, the implant 51 is in a locked state. After the third catheter 33 extends out of the second catheter 32, the spherical spring releases elastic stress due to being freed from the constraint of the second catheter 32, thereby unfolding and disengaging from the connecting rod portion of the implant 51, thus freeing the implant 51.

[0099] like Figure 10 As shown, this embodiment also discloses a method of using the above-mentioned handle assembly, wherein an implant is connected to the third catheter 33, which includes the following steps:

[0100] Control the first propulsion device 21 to retract the first catheter 31 so that the implant is exposed in the first catheter 31;

[0101] Control the first propulsion device 21 to cause the first catheter 31 to extend in the reverse direction so that the implant can be fully deployed;

[0102] The second propulsion device 22 is controlled to move the second catheter 32 so that the implant is fixed on the blood vessel;

[0103] Control the third propulsion device 23 to move the third catheter 33 so as to detach the implant from the third catheter 33.

[0104] This method requires only four steps to fix the implant to the blood vessel. The required steps and teaching period are relatively short, making it easy to master and apply, which greatly shortens the operation time and improves the safety of the operation.

[0105] Specifically, in this embodiment, the step of controlling the second propulsion device 22 to move the second catheter 32 includes the step of controlling the second propulsion device 22 to extend the second catheter 32; the step of controlling the third propulsion device 23 to move the third catheter 33 includes the step of controlling the third propulsion device 23 to extend the third catheter 33. Both the steps of fixing the implant to the blood vessel and the steps of releasing the implant utilize the extension of the catheter, allowing the handle to more accurately position and adjust the implant's location. Compared to retracting the catheter, extending the catheter provides better control over the implant's trajectory, resulting in a more precise treatment effect. Furthermore, extending the catheter allows for more convenient and faster fixation and release, significantly reducing operation time.

[0106] Example 2

[0107] The handle assembly in this embodiment is largely the same as that in Embodiment 1. The differences between the second propulsion device 22 and the third propulsion device 23 of the handle will now be explained.

[0108] like Figure 11 As shown, both the second propulsion device 22 and the third propulsion device 23 adopt mechanical propulsion. Both the second propulsion device 22 and the third propulsion device 23 include a pusher and an inner rod. The pusher and the inner rod are fixedly connected. The movement of the pusher can drive the inner rod to move along its axial direction. The second conduit 32 and the third conduit 33 are fixedly connected to the corresponding inner rods. The user pushes the external pusher, thereby driving the inner rod and the second conduit 32 and the third conduit 33 connected to the corresponding inner rods to move.

[0109] Specifically, in this embodiment, the inner rod is bonded to the pusher, and the second conduit 32 and the third conduit 33 are respectively bonded to the corresponding inner rod. Of course, in other alternative embodiments, the connection between the inner rod and the pusher, as well as between the second conduit 32, the third conduit 33 and the inner rod, can also be a mechanical fastening connection.

[0110] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A multi-tube controllable handle assembly, characterized in that, The handle assembly includes a handle and a conduit, the handle including a housing and a power mechanism, the power mechanism being mounted on the housing; The conduit includes a first conduit, a second conduit, and a third conduit. The power mechanism includes a first propulsion device, a second propulsion device, and a third propulsion device. The first propulsion device is connected to the first conduit to drive the first conduit to move along the axial direction of the first conduit. The second propulsion device is connected to the second conduit to drive the second conduit to move along the axial direction of the second conduit. The third propulsion device is connected to the third conduit to drive the third conduit to move along the axial direction of the third conduit. The first catheter, the second catheter, and the third catheter are sequentially sleeved from the outside to the inside, and the third catheter is used to connect the implant. In the first state, the implant is located inside the first catheter, and the retraction of the first catheter can expose the implant. In the second state, the first catheter extends in the reverse direction, allowing the implant to fully deploy. In the third state, the movement of the second catheter along its axial direction enables the implant to be fixed to the blood vessel. In the fourth state, the movement of the third catheter along its axial direction can disengage the implant from the third catheter; In the third state, the second catheter extends to secure the implant to the blood vessel; and / or, in the fourth state, the third catheter extends to detach the implant from the third catheter.

2. The multi-tube controllable handle assembly as described in claim 1, characterized in that, The first propulsion device includes a gear and a rack. The gear is mounted on the housing, and the first conduit is fixed on the rack. The gear and the rack mesh for transmission.

3. The multi-tube controllable handle assembly as described in claim 2, characterized in that, The first propulsion device includes a first rotating wheel, the gear is fixed on the first rotating wheel, the first rotating wheel is mounted on the housing, and the first rotating wheel can drive the gear to rotate.

4. The multi-tube controllable handle assembly as described in claim 2, characterized in that, The housing includes a transparent area corresponding to the first conduit, and the rack has a first pointer in the transparent area.

5. The multi-tube controllable handle assembly as described in claim 1, characterized in that, The second propulsion device includes a second rotating wheel and a second screw. The second rotating wheel is fixed on the housing. The second rotating wheel and the second screw are respectively provided with mutually cooperating internal threads and external threads. The second conduit is fixed on the second screw. The second rotating wheel rotates to drive the second screw to move along the axial direction of the second conduit. And / or, the third propulsion device includes a third rotating wheel and a third screw, the third rotating wheel is fixed on the housing, the third rotating wheel and the third screw are respectively provided with mutually cooperating internal threads and external threads, the third guide tube is fixed on the third screw, and the third rotating wheel rotates to drive the third screw to move along the axial direction of the third guide tube.

6. The multi-tube controllable handle assembly as described in claim 5, characterized in that, The second rotating wheel has a scale, and the housing has a second pointer at the second rotating wheel; And / or, the third rotating wheel is provided with a scale, and the housing is provided with a third pointer at the third rotating wheel.

7. The multi-tube controllable handle assembly as described in any one of claims 1-6, characterized in that, The first propulsion device, the second propulsion device, and the third propulsion device are distributed sequentially on the housing from the open end of the handle to the tail end of the handle.

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