handle device

Abstract

The present application relates to a handle device, comprising a fixed handle, a movable handle and a motion switching assembly, the motion switching assembly makes the fixed handle have a first state of limiting axial relative sliding speed and a second state of releasing the limitation of axial relative sliding speed relative to the movable handle; the motion switching assembly comprises a driving member and an engaging member, and the fixed handle comprises a main rod body; in the first state, the driving member locks the engaging member, so that the engaging member is kept engaged with the main rod body; in the second state, compared with the first state, the position of the driving member relative to the engaging member is changed, the driving member releases the locking of the engaging member, and the engaging member is disengaged from the main rod body. The handle device has the advantages of enhanced operation flexibility, accurate control, fast switching speed, high durability and good reliability.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a handpiece device. Background Technology

[0002] In interventional procedures, vascular stents and other medical devices are typically precisely guided into the blood vessel lumen via a delivery system. During deployment, the medical device is slowly pushed out of the delivery sheath by operating a handle, utilizing its inherent elasticity to expand within the blood vessel and achieve precise positioning.

[0003] Stent deployment is a highly technical procedure requiring precise positioning and gradual unfolding of the stent within the blood vessel lumen. However, in clinical practice, control over the stent deployment process is often inadequate, making fine-tuning of the deployment difficult. Therefore, it is necessary to develop a novel delivery device that can provide effective control over the stent deployment process according to different surgical needs and procedures. Summary of the Invention

[0004] Therefore, it is necessary to provide a handle device to address the aforementioned technical problems.

[0005] A handle device includes a fixed handle, a movable handle, and a motion switching component, wherein the motion switching component causes the fixed handle to have a first state with respect to the movable handle that limits the axial relative sliding speed and a second state that releases the limitation on the axial relative sliding speed. The motion switching component includes a driving component and a meshing component, and the fixed handle includes a main rod body; In the first state, the drive member locks the engagement member, so that the engagement member remains engaged with the main rod body; In the second state, compared with the first state, the position of the driving member relative to the engaging member changes, the driving member releases the locking of the engaging member, and the engaging member disengages from the main rod body.

[0006] In one embodiment, in the second state, the engaging member disengages from the main rod by moving.

[0007] In one embodiment, the main shaft is provided with a main thread; the meshing member is provided with a meshing portion for engaging with the main thread, the meshing portion including one or more protrusions.

[0008] In one embodiment, the motion switching component includes a second reset element; During the transition from the first state to the second state, the second reset member is used to disengage the engagement portion from the main thread.

[0009] In one embodiment, during the transition between the first state and the second state, the drive member is capable of sliding along the length of the active handle.

[0010] In one embodiment, the motion switching component includes a first reset element; During the transition from the second state to the first state, the first reset member is used to push the drive member along the length direction of the active handle device to reset the drive member.

[0011] In one embodiment, the drive unit includes a drive portion and an operating portion, the drive portion being disposed within the movable handle, and the operating portion being connected to the drive portion and extending from the movable handle.

[0012] In one embodiment, the driving part is a sleeve-shaped structure; In the second state, the engaging member extends at least partially into the drive section.

[0013] In one embodiment, the driving member is provided with a first guide portion, and the engaging member is provided with a second guide portion. During the transition from the second state to the first state, the first guide portion and the second guide portion cooperate with each other to move the engaging member toward the main rod body so as to engage with the main rod body.

[0014] In one embodiment, in the second state, the first guide portion presses against the surface of the second guide portion.

[0015] Beneficial effects: Enhanced operational flexibility: The handle device of the present invention provides two different operating states, namely a first state that restricts axial sliding and a second state that allows axial sliding; this design significantly improves the adaptability of the handle, enabling it to meet the needs of different users and different operating environments, and to flexibly switch between the first state and the second state. Precise control: Through the drive and engagement components in the motion switching assembly, the handle device can achieve precise control of the fixed handle in the first state, ensuring the stability and accuracy of operation; Fast switching speed: The handle device can quickly switch between the first and second states, which provides convenience for application scenarios that require frequent adjustment of the handle position and improves operating efficiency; High durability and reliability: The locking and unlocking mechanism of the drive and engagement parts ensures the stability of the handle in both states, reducing the risk of damage caused by loose structure or improper operation. Attached Figure Description

[0016] Figure 1 and Figure 2 This is a schematic diagram of the structure of a conveying device according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a conveying assembly according to an embodiment of the present invention; Figure 4 This is a partial structural diagram of the handle device in one embodiment of the present invention; Figure 5 for Figure 4 A cross-sectional view of the handle device along the AA direction; Figure 6A , Figure 6B and Figure 6C This is a schematic diagram illustrating the transition process of the driving member and the meshing member from a first state to a second state in one embodiment of the present invention; Figure 7 This is a schematic diagram illustrating the assembly relationship between the driving component and the meshing component in one embodiment of the present invention. Figure 8 for Figure 7 Exploded view.

[0017] Reference numerals: 100, handle device; 110, fixed handle; 111, main rod body; 1111, main thread; 112, first grip part; 120, movable handle; 130, motion switching assembly; 131, first reset part; 132, second reset part; 133, driving part; 1331, driving part; 1333, notch; 1332, operating part; 1334, first guide part; 134, engaging part; 1341, engaging part; 1342, second guide part; 200, conveying assembly; 210, sheath core assembly; 220, outer sheath tube. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description is provided below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a thorough and complete understanding of the disclosure of the present invention.

[0019] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0020] As used in this document, "distal end" refers to the end of a component that is furthest from the operator along its length when the component is being operated on, while "proximal end" refers to the end of the component that is closest to the operator along its length. When a component is not being operated on, "distal end" and "proximal end" can be understood as distinguishing different parts of the component. In other words, "distal end" and "proximal end" are used solely for illustrative purposes to facilitate the reader's understanding of the description of a component and do not constitute a limitation on the component's structure.

[0021] Figure 1 and Figure 2 A schematic diagram of a conveying device according to an embodiment of the present invention is shown. The conveying device mainly includes a handle device 100 and a conveying assembly 200 connected thereto. In these views, for any component, according to the definition of "distal end" and "proximal end" above, the distal end of the handle device 100 is connected to the proximal end of the conveying assembly 200.

[0022] Figure 3 A schematic diagram of the delivery assembly 200 is shown. The delivery assembly 200 includes a core sheath assembly 210 and an outer sheath 220, the outer sheath 220 being slidable along the core sheath assembly 210 to form a sleeve structure. The annular space between the core sheath assembly 210 and the outer sheath 220 is designed for storing medical devices. Through the operation of the delivery assembly 200, medical devices can be precisely delivered into blood vessels or other tissues. Release of the medical device is achieved through the relative sliding of the core sheath assembly 210 and the outer sheath 220, a process controlled by the handle device 100.

[0023] In one embodiment, such as Figure 1 and Figure 2 As shown, the handle device 100 includes a fixed handle 110 and a movable handle 120. The fixed handle 110 is connected to the sheath core assembly 210, while the movable handle 120 is connected to the outer sheath tube 220. The movable handle 120 is capable of relative movement with respect to the fixed handle 110 in the axial or longitudinal direction, thereby enabling axial relative movement of the outer sheath tube 220 relative to the sheath core assembly 210.

[0024] In one embodiment, such as Figure 1 and Figure 2 As shown, the handle device 100 includes a motion switching component 130. When operating the conveying device, the operator's hands can respectively grip the fixed handle 110 and the movable handle 120. The motion switching component 130 can be mounted on the movable handle 120, thus facilitating the operator to operate the motion switching component 130 with the same hand while gripping the movable handle 120. The motion switching component 130 causes the fixed handle 110 to have a first state relative to the movable handle 120 that limits the axial relative sliding speed. Figure 1(as shown) and the second state where the limitation on axial relative sliding speed is lifted (as shown) Figure 2 (As shown).

[0025] Figure 4 This is a partial structural diagram of the handle device 100 in one embodiment of the present invention. Figure 5 for Figure 4 A cross-sectional view of the handle device 100 along the AA direction. Figure 6A , Figure 6B and Figure 6C This is a schematic diagram illustrating the transition process of the drive member 133 and the engagement member 134 from a first state to a second state in one embodiment of the present invention.

[0026] In one embodiment, the motion switching assembly 130 includes a drive member 133 and an engagement member 134, and the fixed handle 110 includes a main rod 111, such as Figure 6A As shown, in the first state, the engaging member 134 engages with the main rod 111, and the driving member 133 locks the engaging member 134, maintaining the engagement between the engaging member 134 and the main rod 111. For example, when the engaging member 134 and the main rod 111 are engaged by a thread, locking the engaging member 134 by the driving member 133 means that the driving member 133 restricts the outward movement of the engaging member 134 in the radial direction of the main rod 111. It can be understood that the engaging member 134 is allowed a certain degree of freedom of movement in the radial direction of the main rod 111, as long as the driving member 133 satisfies a certain degree of restriction on the engaging member 134. This degree of restriction ensures that the engaging member 134 will not disengage from the main rod 111 due to radial movement relative to the main rod 111. That is, under the restriction of the driving member 133, the engaging member 134 and the main rod 111 can maintain thread engagement.

[0027] like Figure 6B As shown, the drive unit 133 is slid to the right until it slides to... Figure 6C In the second state shown, compared to the first state, the position of the driving member 133 relative to the engaging member 134 changes, causing the driving member 133 to release the locking of the engaging member 134. The unlocked engaging member 134 can then move radially away from the main rod 111, thereby disengaging from the main rod 111. Specifically, when the driving member 133 releases the locking of the engaging member 134, the driving member 133 can completely release the restriction on the radial displacement of the engaging member 134 relative to the main rod 111, or it can be that the driving member 133 partially releases the restriction on the radial displacement of the engaging member 134 relative to the main rod 111. Figure 6C(As shown). For the former, the path of the engaging member 134 in the radial direction relative to the main rod 111 will not be occupied by the driving member 133, but the degree of radial displacement of the engaging member 134 relative to the main rod 111 may also be limited by other components. For the latter, such as... Figure 6C As shown, compared to the first state, although the drive member 133 still restricts the radial displacement of the meshing member 134 relative to the main rod 111 in the radial direction, the degree of restriction of the displacement of the meshing member 134 by the drive member 133 in the second state is less than that in the first state, so that the meshing member 134 can move away from the main rod 111 in the radial direction, thereby disengaging the meshing member 134 from the main rod 111.

[0028] The delivery device described in the above embodiments enables "fast release" and "slow release" of medical devices such as vascular stents. The following explanation uses a vascular stent as an example. "Fast release" and "slow release" refer to the speed at which the vascular stent is released from the delivery device after being placed in the designated position during surgery. Controlling this speed is crucial for the precision and safety of the surgery.

[0029] "Slow release" is typically used for precise positioning of vascular stents, ensuring the stent is accurately placed in the vessel requiring treatment and avoiding unnecessary damage to surrounding tissues. "Fast release," on the other hand, is used to rapidly release the remaining portion of the stent after positioning, accelerating the surgical process and reducing operation time. However, in some cases, such as in aortic dissection intervention surgery, rapid stent release may be necessary at the start of the procedure to establish blood flow and prevent stent displacement due to blood flow impact. In other stages of the procedure, slow release may be required to ensure precise positioning. In other words, this delivery device can flexibly switch between "fast release" and "slow release" depending on the specific needs of different surgeries.

[0030] The conveying device in the above embodiments, such as Figure 6A As shown, in the first state, the drive member 133 locks the engagement member 134, keeping the engagement member 134 engaged with the main rod body 111. This engagement can be a threaded engagement, whereby the movable handle 120 is rotated axially relative to the fixed handle 110, and the threaded engagement allows the movable handle 120 to move relative to the fixed handle 110 along the axial direction. However, the speed of this relative movement is limited by the threaded engagement of the motion switching component 130. Since the fixed handle 110 is connected to the sheath core assembly 210, and the movable handle 120 is connected to the outer sheath tube 220, the speed of the axial relative movement of the outer sheath tube 220 relative to the sheath core assembly 210 is also limited in the first state, thereby achieving "slow release" of medical devices such as vascular stents.

[0031] The conveying device in the above embodiments, such as Figure 6BAs shown, relative to Figure 6A The first state shown is to slide the drive 133 to the right, and continue sliding until... Figure 6C The second state is shown. In the second state, the drive member 133 releases the lock on the engagement member 134, that is, it releases the axial restriction on the engagement member 134, allowing the engagement member 134 to move radially outward along the movable handle 120 and disengage from the threaded engagement with the main rod body 111. At this time, the speed of the axial relative movement of the movable handle 120 relative to the fixed handle 110 is no longer limited by the motion switching component 130. Therefore, in the second state, the speed of the axial relative movement of the outer sheath tube 220 relative to the sheath core assembly 210 is no longer restricted, thereby achieving "fast release" of medical devices such as vascular stents.

[0032] like Figure 2 As shown, in one embodiment, the fixed handle 110 includes a first grip portion 112 and a main rod 111. The distal end of the main rod 111 is fixedly connected to the proximal end of the first grip portion 112, i.e., the main rod 111 is connected to the proximal end of the first grip portion 112. The first grip portion 112 is designed to be easy to grip with the hand, and the main rod 111 is designed to be easy to slide with the movable handle 120. To facilitate relative sliding, the main rod 111 is a long rod, and the movable handle 120 is a tubular structure with an inner cavity. The movable handle 120 is sleeved on the outside of the main rod 111 and can move axially relative to the main rod 111.

[0033] In one embodiment, the motion switching component 130 is disposed on the movable handle 120 and is movable with the movable handle 120. By operating the motion switching component 130, the control handle device 100 can be switched between a first state and a second state. Since the motion switching component 130 is disposed on the movable handle 120, both the motion switching component 130 and the movable handle 120 can be operated with the same hand, making the operation process more convenient.

[0034] In one embodiment, the main rod 111 is provided with a main thread 1111 for engaging with the movable handle 120. For example... Figure 5 As shown, the engagement member 134 of the motion switching assembly 130 is provided with an engagement portion 1341 for engaging with the main thread 1111. The engagement portion 1341 includes one or more protrusions. The engagement member 134 and the main rod body 111 are achieved by the protrusions engaging into the thread groove of the main thread 1111. When the protrusions disengage from the thread groove of the main thread 1111, the engagement member 134 and the main rod body 111 are disengaged.

[0035] The main thread 1111 extends helically along the circumference of the main shaft 111. The protruding part of the main thread 1111 is called a thread block, which extends helically along the circumference of the main shaft 111. Adjacent thread blocks are spaced apart to form thread grooves. The protrusions of the engagement portion 1341 can be designed to facilitate engagement with the main thread 1111, allowing the protrusions to be embedded in the thread grooves of the main thread 1111 and slide along the extension direction of the thread grooves. In other words, the protrusions extend along the trajectory of the thread line, thus facilitating engagement with the main thread 1111. In the case where the engagement portion 1341 includes multiple protrusions, these protrusions are spaced apart along the length of the main shaft 111, such that a thread block of the main thread 1111 is just accommodating between two adjacent protrusions. When the drive member 133 releases the lock on the engagement member 134, i.e., after changing from the first state to the second state, the engagement member 134 can be pushed or pulled radially away from the main shaft 111 by other elements, thereby disengaging from the main shaft 111. To facilitate the transition of the engaging member 134 from the engaged state to the disengaged state with the main rod 111, such as... Figure 6A , Figure 6B and Figure 6C As shown, the motion switching assembly 130 includes a second reset member 132. When the drive member 133 slides along the axial direction of the movable handle 120 to release the limiting position on the engaging member 134, as... Figure 6C As shown, the second reset member 132 provides an elastic thrust along the radial direction of the movable handle 120, causing the engaging member 134 to move away from the main rod 111, thus disengaging it from the main rod 111. Conversely, if the reverse sliding drive member 133 is used, it will reapply pressure along the radial direction of the movable handle 120, pushing the engaging member 134 closer to the main rod 111, restoring the engagement state, and the second reset member 132 will be correspondingly recompressed. The second reset member 132 can be made of various components, such as springs, magnets, electromagnets, or spring sheets, to adapt to different needs and operating conditions.

[0036] like Figure 6B and Figure 6C As shown, in the second state, the drive member 133 releases the lock on the engaging member 134, allowing the engaging member 134 to move radially away from the main rod 111, thereby disengaging from the main rod 111. A pushing or pulling force away from the main rod 111 can be applied to the engaging member 134 by the second reset member 132, causing the engaging member 134 to disengage from the main rod 111 by movement. To improve the smoothness of the movement of the engaging member 134 and reduce the resistance to its movement caused by friction from other components, the movement of the engaging member 134 can be translational. Specifically, multiple parallel springs can be used to evenly push different parts of the engaging member 134, ensuring that the clockwise speed of movement of each part of the engaging member 134 is the same. Figure 6A and Figure 6BAs shown, for one of the meshing parts 134, two second reset parts 132 can be provided. Along the length direction of the main rod 111, the two second reset parts 132 can be respectively provided on both sides of the meshing part 1341.

[0037] The movement of the drive member 133 determines whether the engaging member 134 can move axially relative to the main rod 111, thereby determining whether the engaging member 134 is engaged or disengaged from the main rod 111, and further determining whether the delivery device controls medical devices such as vascular stents using a "fast release" or "slow release" method. In one embodiment, during the transition from the first state to the second state, the drive member 133 slides along the length direction of the movable handle 120, that is, the movement direction of the drive member 133 is along the length direction of the main rod 111, the movable handle 120, or the delivery device. The "fast release" and "slow release" processes of the delivery device can be conveniently controlled by moving a finger back and forth along the axial direction of the delivery device.

[0038] like Figure 5 As shown, the motion switching assembly 130 includes a first reset member 131, which provides power for the reset movement of the drive member 133. Figure 6B and Figure 6C As shown, when transitioning from the first state to the second state, the drive member 133 moves axially along the main rod 111, specifically moving towards the proximal end of the conveying device. This can be operated by moving a finger. During this process, if the first reset member 131 is a spring, the drive member 133 compresses the spring to store energy. When the finger releases the drive member 133, the spring pushes the drive member 133 along the length of the movable handle, resetting the drive member 133. Figure 6C The state shown is reset to Figure 6B even Figure 6A The state shown. The first reset element 131 can be a spring, magnet, electromagnet, or spring sheet, etc.

[0039] like Figure 5 As shown, the movable handle 120 has a groove structure extending along the axial or length direction. A first reset member 131 is disposed within this groove structure, with its proximal end supported on the inner wall of the groove structure and its distal end supported on the proximal end of the drive member. The extension / retraction direction of the first reset member 131 is configured along the axial direction of the movable handle 120 to provide an elastic restoring force to the drive member 133 located at its distal end, allowing the drive member 133 to automatically return to its distal position after moving proximal. Combined with... Figure 4 and Figure 5 During operation, the operating part is pushed towards the proximal end, causing the driving member 133 to move towards the proximal end and compress the first reset member 131, so that after the operation on the operating part 1332 is canceled, the first reset member 131 can push the operating part 1332 to automatically reset towards the distal end.

[0040] Figure 7 This is a schematic diagram showing the assembly relationship between the driving member 133 and the engaging member 134 in one embodiment of the present invention. Figure 8 for Figure 7 Exploded view. Drive member 133 and engagement member 134, as part of motion switching assembly 130, are disposed on movable handle 120 for controlling the "fast release" and "slow release" processes of movable handle 120 relative to fixed handle 110.

[0041] In one embodiment, there may be two engaging members 134, respectively disposed on both sides of the main rod 111 in the radial direction. The driving member 133 can simultaneously drive the two engaging members 134 to maintain engagement with or disengage from the main rod 111.

[0042] In one embodiment, the drive member 133 includes a drive portion 1331 and an operating portion 1332 connected to the drive portion 1331. In one embodiment, to facilitate operation of the operating portion 1332 by a finger, the surface of the operating portion 1332 is provided with raised and recessed textures to increase friction. In another embodiment, the surface of the operating portion 1332 for contacting the finger can also be configured as having an inclined slope. Specifically, the finger drives the operating portion 1332 to move from the distal end to the proximal end. To ensure good contact between the finger and the operating portion 1332 during the proximal movement, such as... Figure 7 As shown, the thickness H1 in the proximal direction of the operating part 1332 is greater than the thickness H2 in the distal direction, so as to form an inclined slope.

[0043] The drive unit 1331 can be a sleeve-shaped structure, such as... Figure 4 As shown, the drive unit 1331 is sleeved on the main rod 111 and can slide along the axial direction of the main rod 111. The drive unit 1331 is disposed inside the movable handle 120, and the operating part 1332 connected to the drive unit 1331 can extend from the movable handle 120 for convenient direct control of the operating part 1332. Figure 6A As shown, there is a certain space between the drive part 1331 of the drive member 133 and the main rod 111 for accommodating the engaging member 134. In the first state, the engaging member 134 is at least partially located in the space between the drive part 1331 and the main rod 111, and the engaging member 134 is engaged with the main rod 111. In the second state, the second reset member 132 can push the engaging member 134 at least partially out of the space along the radial direction, thereby disengaging the engaging member 134 from the main rod 111.

[0044] When using the device, the doctor flicks the drive element 133 proximally to switch the delivery device from a "slow release" state to a "fast release" state. During the fast release, the doctor pulls the movable handle 120 proximally while keeping the finger flicking the drive element 133. After the fast release is complete, the doctor releases the drive element 133, and under the action of the first reset element 131, the drive element 133 resets distally, and the delivery device returns from the "fast release" state to the "slow release" state.

[0045] In one embodiment, such as Figure 6C As shown, the drive member 133 is provided with a first guide portion 1334, and the meshing member 134 is provided with a second guide portion 1342. During the transition from the second state corresponding to the "fast release" state to the first state corresponding to the "slow release" state, the first guide portion 1334 and the second guide portion 1342 cooperate with each other to move the meshing portion 1341 toward the main rod 111 so as to mesh with the main rod 111.

[0046] In one embodiment, such as Figure 6C As shown, both the first guide portion 1334 and the second guide portion 1342 are inclined surfaces. Taking a plane as an example, the first guide portion 1334 and the second guide portion 1342 have the same inclination direction, both radially outwards in the direction from the proximal end to the distal end. The first guide portion 1334 is located at the distal end of the drive member 133, and the second guide portion 1342 is located at the proximal end of the drive member 133. In the second state, the first guide portion 1334 and the second guide portion 1342 are in a partially overlapping contact state, with the first guide portion 1334 pressing against the surface of the second guide portion 1342; specifically, the first guide portion 1334 is attached to the outer side of the second guide portion 1342. When transitioning from the second state to the first state, the drive member 133 moves from the proximal end to the distal end, increasing the overlap of the first guide portion 1334 and the second guide portion 1342. Under the action of the inclined surface of the first guide portion 1334, the engagement member 134 is pushed radially inward, causing the engagement member 134 to engage with the main rod body 111, thereby transitioning to the "slow release" state.

[0047] In other embodiments, the first guide portion 1334 and / or the second guide portion 1342 may include arcuate surfaces while maintaining the tilting trend of the first guide portion 1334 and the second guide portion 1342 described above.

[0048] In other embodiments, at least one of the first guide portion 1334 and the second guide portion 1342 is a surface with an inclined trend.

[0049] like Figure 7 and Figure 8As shown, the sleeve-shaped drive unit 1331 has two notches 1333 at its end. For example, the notches 1333 can be located at the distal end of the drive unit 1331. The two notches 1333 are arranged opposite each other in the radial direction. The notches 1333 are open structures without side faces at the distal end, that is, each notch 1333 includes at least three main side faces, namely the side face located at the proximal end, and the side faces located on the left and right sides of the side face. Two engaging members 134 can be respectively provided at each notch 1333. The two engaging members 134 can move closer and further away synchronously in the radial direction of the sleeve at the notch 1333, thereby realizing engagement and disengagement with the main rod body 111. The first guide portion 1334 is disposed on the proximal side of the notch 1333. During the axial movement of the driving member 133 toward the engaging member 134, the first guide portion 1334 slides along the surface of the second guide portion 1342 of the engaging member 134, thereby driving the engaging member 134 to move radially toward the main rod 111 along the sleeve. The other two sides of the notch 1333 act as guides when driving the engaging member 134 to slide radially along the sleeve, ensuring that the engaging member 134 does not wobble during movement.

[0050] like Figure 6A , Figure 6B and Figure 6C As shown, in the first state, a portion of the length of the engaging member 134 is inserted into the cavity of the sleeve-shaped drive portion 1331, with the proximal end of the engaging member 134 located inside the cavity and the distal end remaining outside the cavity. In this state, the distance between the two radially arranged engaging members 134 is relatively close. When transitioning to the second state, the drive member 133 moves towards the proximal end, causing the engaging member 134 to gradually exit from the distal end of the cavity. Once the inclined first guide portion 1334 and the second guide portion 1342 are in contact, the supporting force provided by the second reset member 132 causes the two engaging members 134 to move away from each other, but the engaging member 134 still extends at least partially into the drive portion 1331, i.e., the first guide portion 1334 and the second guide portion 1342 are not completely separated. This configuration ensures that when the drive member 133 slides to the distal end again, the two meshing members 134 can be pushed radially inward through the synergistic action of the first guide portion 1334 and the second guide portion 1342, so that the two meshing members 134 can move closer to each other and re-engage with the main rod body 111.

[0051] like Figure 1As shown, when operating the handle device 100, the operator holds the fixed handle 110 and the movable handle 120 with both hands respectively. When a "slow release" of a medical device such as a vascular stent is required, the operator should keep the fixed handle 110 stationary and rotate the movable handle 120 relative to the main rod 111. This rotation, through a threaded drive mechanism, causes the movable handle 120 to move proximally along the main rod 111, simultaneously moving the outer sheath 220 proximally, thus achieving the slow release of the vascular stent. During this process, the operator can observe and adjust the release position of the vascular stent in real time until it reaches the expected deployment position. Once the release position of the vascular stent meets the requirements, the operator can then perform a rapid release operation on the remaining portion of the vascular stent.

[0052] like Figure 2 As shown, when a "fast release" of medical devices such as vascular stents is required, based on the above operation, the operator pushes the operating part 1332 of the motion switching component 130 proximally with their fingers to switch the handle device 100 from the first state to the second state. In the second state, since the threaded engagement between the engaging member 134 and the main rod 111 is disengaged, the operator can directly translate the movable handle 120 proximally. This action causes the outer sheath 220 and the movable handle 120 to move rapidly proximally simultaneously, thereby quickly releasing the remaining part of the vascular stent. When switching the working state of the operating handle, the operator can operate the operating part 1332 of the motion switching component 130 with the same hand while holding the movable handle 120, which is highly convenient. During the "fast release" operation, the operator needs to continuously apply force to keep the operating part 1332 in a pushed state while moving the movable handle 120 proximally. This design optimizes the operation process and improves the portability of operation by unifying the direction of the push of the operating unit 1332 and the direction of rapid movement of the movable handle 120 from the far end to the near end.

[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A handle device, characterized in that, It includes a fixed handle, a movable handle, and a motion switching assembly, wherein the motion switching assembly causes the fixed handle to have a first state with respect to the movable handle that limits the axial relative sliding speed and a second state that releases the limitation on the axial relative sliding speed. The motion switching assembly includes a drive component, a meshing component, a first reset component, and a second reset component. The fixed handle includes a main rod body with a main thread. The meshing component has a meshing part for engaging with the main thread, and the meshing part includes one or more protrusions. In the first state, the drive member locks the engagement member, so that the engagement member remains engaged with the main rod body; In the second state, compared with the first state, the position of the driving member relative to the engaging member changes, the driving member releases the locking of the engaging member, and the engaging member disengages from the main rod body by moving. During the transition from the first state to the second state, the second reset member is used to disengage the engaging portion from the main thread; During the transition from the second state to the first state, the first reset member is used to push the drive member along the length direction of the active handle to reset the drive member.

2. The handle device according to claim 1, characterized in that, During the transition between the first state and the second state, the drive member is able to slide along the length direction of the movable handle.

3. The handle device according to claim 1, characterized in that, The drive unit includes a drive part and an operating part. The drive part is disposed inside the movable handle, and the operating part is connected to the drive part and extends out from the movable handle.

4. The handle device according to claim 3, characterized in that, The drive unit has a sleeve-shaped structure; In the second state, the engaging member extends at least partially into the drive section.

5. The handle device according to claim 1, characterized in that, The driving component is provided with a first guide portion, and the engaging component is provided with a second guide portion. During the transition from the second state to the first state, the first guide portion and the second guide portion cooperate with each other to move the engaging component toward the main rod body so as to engage with the main rod body.

6. The handle device according to claim 5, characterized in that, In the second state, the first guide portion presses against the surface of the second guide portion.

Images