Implant control handle and delivery system

Abstract

This invention provides a control handle and delivery system for an implant. The control handle includes a suture removal mechanism, a housing, and multiple sutures. The suture removal mechanism is disposed on the housing, and the proximal ends of the multiple sutures all pass through the housing and are connected to the suture removal mechanism. The distal end of at least one suture is used to connect to the implant. The suture removal mechanism controls the multiple sutures to move synchronously or sequentially towards the proximal end of the control handle. The delivery system includes a control handle and a catheter assembly, the proximal end of which is connected to the control handle. The control handle has a simple structure, is easy to operate, and is inexpensive. It also adds a one-button suture removal function, simplifying the suture removal operation and reducing the complexity of the surgical procedure.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a control handle and delivery system for an implant. Background Technology

[0002] Studies show that the incidence of coronary heart disease, cardiovascular and cerebrovascular diseases, valvular heart disease, and tumors among middle-aged and elderly people is increasing year by year. These diseases can directly affect the quality of life of middle-aged and elderly people and even threaten their lives. Traditional surgical treatment remains the preferred treatment for critically ill patients. However, for elderly patients, those with multiple organ diseases, those with a history of open-chest surgery, and those with poor recovery function, traditional surgery carries high risks, high mortality rates, and some patients may not even be able to undergo surgery due to their own health conditions.

[0003] Interventional therapy is a novel treatment technology developed internationally in recent years. It boasts advantages such as being non-surgical, minimally invasive, allowing for rapid recovery, achieving good therapeutic effects, and causing minimal harm to the patient, making it one of the most promising branches of interventional therapy. The principle of interventional therapy is to utilize modern high-tech methods for minimally invasive treatment. Guided by medical imaging equipment, specialized precision instruments are introduced into the patient's body to diagnose and treat internal lesions locally.

[0004] In interventional procedures, the control handle serves as the power source for the entire treatment. These handles can be purely manual, purely electric, or a hybrid of manual and electric. All types of control handles must ensure sufficient safety, effectiveness, and cost-effectiveness during use. With in-depth research into the pathogenesis and lesion types of various cardiac diseases, the requirements for the function, operational precision, and ease of use of control handles in interventional procedures are gradually increasing. For example, current surgical treatments often require the handle to perform functions such as real-time suture removal, bending control, release, rapid release, retrieval, and full retrieval. However, existing control handles are costly to produce, have limited functionality, and are complex to operate, thus failing to meet the higher demands of surgical procedures. Therefore, further design and optimization of the control handle's structure and function are necessary. Summary of the Invention

[0005] The purpose of this invention is to provide a control handle and delivery system for an implant, wherein the control handle is simple in structure, easy to operate and inexpensive.

[0006] To achieve the above objectives, the present invention provides a control handle for an implant, comprising a suture removal mechanism, a housing, and multiple sutures; the suture removal mechanism is disposed on the housing; the proximal ends of the multiple sutures all penetrate the housing and are connected to the suture removal mechanism; the distal end of at least one suture is used to connect to the implant; the suture removal mechanism is used to control the multiple sutures to move synchronously or sequentially toward the proximal end of the control handle.

[0007] Optionally, the unwinding mechanism includes a drive unit and a winding unit connected to each other; the drive unit is at least partially disposed outside the housing; the winding unit is disposed inside the housing; the drive unit is used to drive the winding unit to rotate so that multiple wires are wound synchronously or successively onto the winding unit.

[0008] Optionally, the outer wall of the winding portion is provided with a limiting groove along its circumference, and the limiting groove is used for multiple of the wires to be wound therein.

[0009] Optionally, before winding the winding portion, each of the wires has a first free segment in its initial state that is not under tension, and the lengths of the first free segments of the multiple wires in their initial state are different.

[0010] Optionally, the winding section includes a first winding member and a plurality of second winding members; the first winding member is connected to the drive section; each of the second winding members is rotatable relative to the housing;

[0011] Each of the said linear bodies enters from the far end of the outer shell and first wraps around a corresponding second winding member, then wraps around the first winding member, and the winding directions of the linear bodies on the first winding member and the second winding member are opposite.

[0012] Optionally, after winding the second winding member and before winding the first winding member, each of the wires has a second free end that is not under tension in the initial state, and the lengths of the second free ends of the multiple wires are different in the initial state.

[0013] Optionally, the first winding element is a winding spool, and / or the second winding element is a winding shaft, with multiple winding shafts arranged at intervals along the axial direction of the housing.

[0014] Optionally, the winding section includes a third winding member and a fourth winding member; the third winding member is connected to the driving section; the fourth winding member is rotatably connected to the third winding member; each of the thread-like bodies is used to wind onto the third winding member or the fourth winding member; the third winding member rotates at a certain angle under the drive of the driving section, thereby driving the fourth winding member to rotate.

[0015] Optionally, there are multiple fourth winding members, which are connected sequentially. One of the fourth winding members is rotatably connected to the third winding member. After the third winding member rotates at a certain angle, it drives one of the fourth winding members connected to it to rotate. After the corresponding fourth winding member rotates at a certain angle, it drives another fourth winding member connected to it to rotate.

[0016] Optionally, the third winding member is arranged coaxially with the drive unit; a plurality of fourth winding members are arranged sequentially at intervals on the rotation axis of the drive unit; wherein the third winding member and the fourth winding member are connected by a concave-convex fit, and / or, two fourth winding members are connected by a concave-convex fit.

[0017] Optionally, the wire removal mechanism further includes a locking mechanism slidably connected to the housing, wherein the locking mechanism, when moved to different positions, enables the wire removal mechanism to have a locked state and an unlocked state;

[0018] When the wire removal mechanism is in the locked state, the locking mechanism can limit the drive part and / or the winding part to prevent the drive part from rotating;

[0019] When the unwinding mechanism is in the unlocked state, the locking mechanism can release the restriction on the drive unit and / or the winding unit to allow the drive unit to rotate.

[0020] Optionally, the locking mechanism includes a pusher and a locking member fixedly connected; the pusher is at least partially disposed outside the housing; the locking member is disposed inside the housing and is used for sliding connection with the housing; the locking member can be detachably connected to the winding portion. To achieve the above objectives, the present invention also provides a delivery system including a catheter assembly and a control handle for the implant as described in any one of the claims, the proximal end of the catheter assembly being connected to the control handle, and the distal ends of the plurality of the thread-like bodies being used to pass through the catheter assembly and connect to the implant.

[0021] In the implant control handle and delivery system provided by this invention, the control handle includes: a suture removal mechanism, a housing, and multiple sutures. The suture removal mechanism is disposed on the housing. The proximal ends of the multiple sutures all pass through the housing and are connected to the suture removal mechanism. The distal end of at least one suture is used to connect to the implant. The suture removal mechanism controls the multiple sutures to move synchronously or sequentially toward the proximal end of the control handle. This configuration adds a one-button suture removal function to the control handle. By operating the suture removal mechanism alone, all sutures can be simultaneously or sequentially removed, thus expanding the control function of the control handle and simplifying the suture removal steps. This provides a convenient operating experience and improves operational comfort. Furthermore, the control handle has a simple structure, is easy to operate, and is inexpensive, significantly reducing the complexity of the operation for the operator, shortening surgical time, and increasing the success rate of the surgery. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the conveying system in Embodiment 1 of the present invention;

[0023] Figure 2 This is an axial cross-sectional view of the conveying system in Embodiment 1 of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of part a;

[0025] Figure 4 This is a front view schematic diagram of the winding section in Embodiment 2 of the present invention;

[0026] Figure 5 This is a front view schematic diagram of the winding section in Embodiment 3 of the present invention;

[0027] Figure 6 This is a top view of the first and second fourth winding elements in Embodiment 3 of the present invention.

[0028] [The annotations in the attached figures are explained below]:

[0029] Control handle 100; conduit assembly 200; thread removal mechanism 1; drive unit 11; winding unit 12; limiting groove 121; first winding member 122; second winding member 123; third winding member 124; first rotating member 1241; second rotating member 1242; first protrusion 1243; first fourth winding member 125; first arc groove 1251; second protrusion 1252; second fourth winding member 126; second arc groove 1261; locking mechanism 13; push member 131; locking member 132; outer shell 2; wire body 3; first free section 31; second free section 32; venting unit 4; bending control knob 5; first rotating part 6; second rotating part 7. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0031] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and simplifying the description, and are not intended to 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 the present invention.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or a connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. In the description of this invention, "a plurality of" means at least two, such as two, three, or more.

[0033] As used in this specification, "far end" generally refers to the end of the control handle or conveying system furthest from the operator; the term "proximal end," as opposed to "far end," generally refers to the end of the control handle or conveying system closest to the operator; the term "axial" refers to the direction along the axis of the housing of the control handle; the term "circumferential" refers to the direction around the axis of the housing; and the term "radial" refers to the diametrical direction of the cross-section of the housing, which is perpendicular to the axis of the housing.

[0034] The present invention will now be described in detail with reference to the accompanying drawings and preferred embodiments. Unless otherwise specified, the following embodiments and features can complement or combine with each other.

[0035] <Example 1>

[0036] Reference Figure 1 and Figure 2 As shown, a preferred embodiment of the present invention provides a delivery system including a control handle 100 and a catheter assembly 200; the proximal end of the catheter assembly 200 is connected to the control handle 100. The control handle 100 needs to control the position and orientation (implant movement or state switching) of the implant at the distal end of the catheter assembly 200 via a wired control. Therefore, the control handle 100 needs to control the implant via a wire 3.

[0037] This invention does not limit the type of implant, such as vascular stents, occlusion devices, valve repair devices, and other implantable or interventional medical devices requiring wire control. For example, when the implant is a stent, the control handle 100 can control the expansion or compression of the stent via the wire body 3; when the implant is a valve repair device, the control handle 100 can control the opening and closing of the valve repair device via the wire body 3. Further details are not provided here.

[0038] The thread-like bodies 3 are generally multiple, with their distal ends passing through the catheter assembly 200 and connecting to the implant. The catheter assembly 200 can load and transport the implant to achieve operations such as implant delivery and retrieval. In actual use, after the implant is inserted into the predetermined position within the body, the control handle 100 needs to control the multiple thread-like bodies 3 to gradually move towards the proximal end of the control handle 100, so that the multiple thread-like bodies 3 separate from the implant and completely release the implant, and also allow the catheter assembly 200 and the control handle 100 to be smoothly retracted. In this case, if each thread-like body 3 is equipped with a separate wire control component on the control handle 100, the operation of the thread-like bodies 3 would be extremely complex and prone to errors. Therefore, the control handle 100 provided by this invention uses a single suture removal mechanism 1 to operate all the thread-like bodies 3, thereby reducing the complexity of operating the thread-like bodies 3 and reducing the risk of errors.

[0039] Specifically, the control handle 100 includes a suture removal mechanism 1, a housing 2, and multiple sutures 3; the suture removal mechanism 1 is disposed on the housing 2; the proximal ends of the multiple sutures 3 all pass through the housing 2 and are connected to the suture removal mechanism 1; the distal end of at least one suture 3 is used to connect to the implant; the suture removal mechanism 1 is used to control the multiple sutures 3 to move synchronously or successively toward the proximal end of the control handle 100.

[0040] In a preferred embodiment, the number of thread-like bodies 3 is multiple, including one control thread-like body 3, which restricts the movement of the remaining thread-like bodies 3; when the control thread-like body 3 is removed, the remaining thread-like bodies 3 can move under the control of the suture removal mechanism 1. In an illustrative embodiment, the control handle 100 further includes a suture detachment component (not labeled), wherein the control thread-like body 3 is used to connect to the suture detachment component and can drive the suture detachment component to move, and the remaining thread-like bodies 3 are used to detachably connect to the suture detachment component and the implant, respectively. When the control thread-like body 3 is pulled and the suture detachment component is driven to move, the remaining thread-like bodies 3 can separate from the suture detachment component and can move under the drive of the suture removal mechanism 1 to achieve separation of the remaining thread-like bodies 3 from the implant. It should be understood that the number of the aforementioned remaining thread-like bodies 3 can be one, two or more.

[0041] Whether the multiple suture bodies 3 need to move synchronously or sequentially depends on the connection between the suture bodies 3 and the implant, or the required retraction steps of the suture bodies 3. This configuration allows multiple suture bodies 3 to be controlled by only one suture removal mechanism 1, meaning the operator only needs to control one suture removal mechanism 1 to perform the suture removal operation on all suture bodies 3. Therefore, the control function of the control handle 100 is expanded, making the operation of the suture bodies 3 simpler, improving operational comfort, and reducing the likelihood of errors. Furthermore, the control handle 100 provided by this invention has a simple structure, is easy to operate, and is inexpensive, which can significantly reduce the complexity of the operator's operation, shorten the surgical time, and improve the success rate of the surgery.

[0042] It should be understood that the movement of the linear body 3 toward the proximal end of the control handle 100 means that the portion of the linear body 3 extending beyond the outer casing 2 moves toward the interior of the outer casing 2, i.e., the control handle 100 gradually retracts the linear body 3. This application does not limit the location of the retraction mechanism 1. The retraction mechanism 1 can be located outside the outer casing 2, inside the outer casing 2, or partially inside the outer casing 2 and partially outside the outer casing 2. Preferably, part of the retraction mechanism 1 is located outside the outer casing 2 and the other part is located inside the outer casing 2. This facilitates the operator's control of the retraction mechanism 1 and also facilitates the connection between the linear body 3 and the retraction mechanism 1.

[0043] In one specific embodiment of this application, the thread removal mechanism 1 can simultaneously control multiple thread-like bodies 3 to move towards the proximal end, that is, the thread removal mechanism 1 can simultaneously retract all thread-like bodies 3. In another specific embodiment of this application, the thread removal mechanism 1 can also sequentially control multiple thread-like bodies 3 to move towards the proximal end, that is, the thread removal mechanism 1 can first control one thread-like body 3 to move towards the proximal end, and after that thread-like body 3 has moved a certain distance, it can then control another thread-like body 3 to move towards the proximal end, that is, the thread removal mechanism 1 can sequentially retract multiple thread-like bodies 3.

[0044] In a preferred embodiment of this application, the wire removal mechanism 1 includes a drive unit 11 and a winding unit 12 connected to each other. The drive unit 11 is at least partially disposed on the outside of the housing 2; the winding unit 12 is disposed inside the housing 2. The drive unit 11 drives the winding unit 12 to rotate, so that multiple wires 3 are wound synchronously or successively onto the winding unit 12. At this time, all wires 3 are connected to the same drive unit 11, so that the operator can perform the wire removal operation of multiple wires 3 by rotating only the same drive unit 11, so that the control handle 100 has a one-button wire removal function, thereby simplifying the wire removal steps of the wires 3 and making the operation more convenient.

[0045] This application does not limit the specific structure of the drive unit 11 and the winding unit 12; the structure of the drive unit 11 and the winding unit 12 only needs to satisfy the requirement that the drive unit 11 can drive the winding unit 12 to rotate. (See reference...) Figure 1 and Figure 3 As shown, in one specific embodiment, the drive unit 11 can be a knob, and the winding unit 12 can be a winding disc. The drive unit 11 and the winding unit 12 are coaxially connected. The drive unit 11 is connected to a fixing bolt (not labeled) in its own axial direction. The fixing bolt passes through the housing 2 and is threadedly connected to the winding unit 12 before engaging with a nut. This configuration allows the drive unit 11 to drive the winding unit 12 to rotate synchronously under external force. After the winding unit 12 rotates, the wire 3 can be gradually wound around it, thus realizing the retraction of the wire 3 by the unwinding mechanism 1. In another specific embodiment, the drive unit 11 can also be a worm gear, and the winding unit 12 can also be a worm. In this way, the worm gear can be rotated to make the worm rotate around its axial direction. (Refer to...) Figure 3 As shown, preferably, the outer wall of the winding portion 12 has a limiting groove 121 along its circumference. The limiting groove 121 is used for multiple wires 3 to be wound therein, that is, multiple wires 3 are respectively wound in the limiting groove 121. The winding portion 12 is preferably provided with a rubber ring sleeved in the limiting groove 121. Multiple wires 3 can be wound on the rubber ring, which can reduce the wear of the winding portion 12 on the wires 3 and improve the service life of the wires 3.

[0046] When the thread-removing mechanism 1 controls the synchronous movement of multiple thread-like bodies 3, it is usually sufficient to place the multiple thread-like bodies 3 side by side and simultaneously wind them around the winding part 12. In this way, the rotation of the winding part 12 can drive the multiple thread-like bodies 3 to move synchronously. However, the way the thread-removing mechanism 1 controls the successive movement of multiple thread-like bodies 3 is complex and varied. The following description focuses on the preferred embodiment of the thread-removing mechanism 1 that requires the successive movement of multiple thread-like bodies 3.

[0047] Reference Figures 1-3As shown, in one embodiment, before the thread 3 is wound around the winding portion 12, each thread 3 has a first free segment 31 in its initial state that is not under tension, and the lengths of the first free segments 31 of the multiple thread 3s in the initial state are different. It should be understood that the first free segment 31 refers to the section of the thread 3 that is about to be wound around the winding portion 12. In one embodiment, the initial state of the thread 3 may be a state in which one end of the thread 3 is in contact with the winding portion 12 but has not yet been wound around the winding portion 12, for example, one end of the thread 3 may be adhered to the winding portion 12. In another embodiment, the initial state of the thread 3 may also be a state in which part of the thread 3 has been wound around the winding portion 12 and another part has not been wound around the winding portion 12. In this case, it is preferable to tie a knot at the winding position of the thread 3 in the initial state so that the thread 3 does not detach from the winding portion 12. It should also be understood that the length of the first free segment 31 of the thread 3 refers to the length of the thread 3 in its extension direction. The first free segment 31 of the linear body 3 refers to the section of the linear body 3 that is not subjected to force, that is, the first free segment 31 of the linear body 3 can be bent at will.

[0048] See Figure 2 and Figure 3 In this embodiment, there are two thread-like bodies 3, namely a first thread x1 and a second thread y1. The first thread x1 and the second thread y1 are respectively connected to different positions of the implant and need to be separated from and withdrawn from the implant one after the other. Both the first thread x1 and the second thread y1 enter the housing 2 from the distal end of the housing 2 along the axial direction, and after entering, they both bend towards the position of the thread withdrawal mechanism 1 and are wound around the winding part 12. Preferably, both the first thread x1 and the second thread y1 are wound within the limiting groove 121.

[0049] Furthermore, the lengths of the first free segment of the first line body x1 and the first free segment of the second line body y1 are different. In this embodiment, the length of the first free segment of the second line body y1 is longer; in another embodiment, the length of the first free segment of the first line body x1 can also be longer.

[0050] Preferably, the winding section 12 rotates under the drive of the drive section 11, causing the thread 3 to gradually wind around the winding section 12. As the winding section 12 rotates, the first thread x1 is initially subjected to tension, causing it to move towards its proximal end. After the first thread x1 has moved a certain distance, the second thread y1 begins to be subjected to tension, causing it to move towards its proximal end, thus achieving the successive retraction of the first thread x1 and the second thread y1. It should be explained that since the initial state of the first free segment 31 of the thread 3 is a bent state and is not subjected to tension, as the winding section 12 rotates, the first free segment 31 of the thread 3 is stretched from a bent state to a straightened state. When the first free segment 31 is straightened, the thread 3 begins to be subjected to tension from the winding section 12 and moves towards its proximal end.

[0051] Reference Figures 1-3 As shown, the control handle 100 also includes a locking mechanism 13 slidably connected to the housing 2. The locking mechanism 13 moves to different positions, allowing the suture removal mechanism 1 to have a locked state and an unlocked state. When the suture removal mechanism 1 is in the locked state, the locking mechanism 13 can limit the drive part 11 and / or the winding part 12 to prevent the drive part 11 from rotating. When the suture removal mechanism 1 is in the unlocked state, the locking mechanism 13 can release the limitation on the drive part 11 and / or the winding part 12 to allow the drive part 11 to rotate. With this configuration, the operator can move the locking mechanism 13 to lock or unlock the suture removal mechanism 1, so that the drive part 11 can be locked when the suture 3 does not need to be withdrawn, thus avoiding operator error during surgery that could affect the surgical process.

[0052] In a preferred embodiment, the locking mechanism 13 includes a pusher 131 and a locking member 132 fixedly connected; the pusher 131 is disposed on the outside of the housing 2; the locking member 132 is disposed inside the housing 2 and is used for sliding connection with the housing 2. In this embodiment, an axial through groove is formed in the internal structure of the housing 2 to accommodate the locking member 132, so that the locking member 132 can move axially. Preferably, the locking member 132 can be detachably connected to the winding portion 12.

[0053] In one embodiment, the locking member 132 is provided with a protrusion (not shown), and the winding portion 12 is provided with a groove (not shown) that mates with the protrusion. More specifically, the groove of the winding portion 12 is a through groove facing the locking member 132, and the protrusion of the locking member 132 is positioned to match the groove of the winding portion 12. When the locking member 132 is moved toward the winding portion 12, the protrusion of the locking member 132 can enter the groove of the winding portion 12, thereby limiting the winding portion 12 circumferentially and preventing it from rotating; when the locking member 132 is moved away from the winding portion 12, the locking member 132 can separate from the winding portion 12, at which point the winding portion 12 can continue to rotate to retract the wire 3. In another embodiment, the locking member 132 may be provided with a groove, and the winding portion 12 may be provided with a protrusion that mates with the groove.

[0054] This application does not limit the limiting method of the locking member 132 and the winding part 12. The locking member 132 and the winding part 12 can also be connected and limited in other ways, such as by threaded connection or snap-fit ​​connection. In addition, the locking member 132 and the winding part 12 can also be limited to each other by a large frictional force between them.

[0055] This application does not limit the connection method between the pusher 131 and the locking member 132. In this embodiment, the locking member 132 is connected to the pusher 131 by a connecting fixing bolt. In other embodiments, the pusher 131 may also be connected to the locking member 132 by other methods such as welding or bonding.

[0056] Reference Figure 1 As shown, the control handle 100 also includes multiple venting sections 4 and a bending control knob 5. The venting sections 4 are fixed to the outer casing 2 and communicate with the target tube, and are used to vent the gas inside the target tube. The bending control knob 5 is sleeved on the proximal end of the outer casing 2 and is used for rotatable connection with the outer casing 2. The bending control knob 5 is used to control the bending of the implant so that the implant can pass through a bending path more easily during delivery. It should be understood that the rotatable connection in this application means that the two connected parts can only rotate relative to each other, but cannot move relative to each other. For example, the rotatable connection between the bending control knob 5 and the outer casing 2 means that the bending control knob 5 and the outer casing 2 can be connected to each other and can rotate relative to each other.

[0057] Furthermore, the catheter assembly 200 may include a stabilizing tube, an outer tube, a middle tube, and an inner tube. The target tube may be configured as one or more of the stabilizing tube, outer tube, middle tube, and inner tube. The operator can inject liquid (e.g., physiological saline) into the target tube through the venting section 4 to purge air from the target tube. The venting section 4 is preferably fixed to the outer casing 2 by mechanical connection or adhesive bonding. Of course, the venting section 4 may also be fixed to the outer casing 2 by other methods. This application does not limit the fixing method of the venting section 4.

[0058] Continue to refer to Figure 1 As shown, the control handle 100 also includes a first rotating part 6 and a second rotating part 7. The first rotating part 6 and the second rotating part 7 are respectively connected to a corresponding target pipe fitting and can drive the corresponding target pipe fitting to move by rotation or movement. In a specific embodiment, the first rotating part 6 is connected to the target pipe fitting (e.g., the outer pipe). The first rotating part 6 can be pulled directly towards the proximal end to achieve rapid release or retraction of the target pipe fitting. The first rotating part 6 can also slowly control the release or retraction of the target pipe fitting by rotating towards the proximal or distal end. The second rotating part 7 is connected to another target pipe fitting (e.g., the middle pipe) and can slowly control the release or retraction of the other target pipe fitting by rotation.

[0059] <Example 2>

[0060] The parts that are the same as those in Embodiment 1 will not be described in detail here. The following mainly describes the differences, while the similarities can be found in Embodiment 1.

[0061] Reference Figure 4As shown, in Embodiment 2 of this application, the winding section 12 includes a first winding member 122 and a plurality of second winding members 123; the first winding member 122 is connected to the driving section 11 and is used to rotate under the drive of the driving section 11. The first winding member 122 is preferably coaxially connected to the driving section 11. Further, each second winding member 123 is rotatable relative to the outer casing 2. Specifically, each second winding member 123 is disposed inside the outer casing 2. This application does not limit the fixed position of the second winding member 123 inside the outer casing 2, and the second winding member 123 can be disposed at any position inside the outer casing 2 as needed. It should be explained that the number of second winding members 123 can be set according to the number of linear bodies 3, as long as it is ensured that each linear body 3 can correspond to one second winding member 123.

[0062] Furthermore, each thread 3 is used to wind around a corresponding second winding member 123. After entering from the distal end of the outer shell 2, each thread 3 first winds around a corresponding second winding member 123, and then winds around a first winding member 122. The winding directions of the thread 3 on the first winding member 122 and the second winding member 123 are opposite. With this configuration, when the first winding member 122 rotates in the direction that gradually winds the thread 3, the second winding member 123 can rotate in the opposite direction to the rotation of the first winding member 123, so that the thread 3 gradually detaches from the second winding member 123 and gradually winds around the first winding member 122. In one embodiment, multiple threads 3 are all wound clockwise around a corresponding second winding member 123 and then counterclockwise around the first winding member 122. In another embodiment, multiple threads 3 are all wound counterclockwise around a corresponding second winding member 123 and then clockwise around the first winding member 122.

[0063] Continue reading Figure 4 After the linear body 3 is wound around the second winding member 123 and before being wound around the first winding member 122, each linear body 3 has a second free segment 32 that is initially unrestrained. The second free segment 32 refers to the section of the linear body 3 located between the first winding member 122 and the second winding member 123. As a preferred example, the lengths of the second free segments 32 of the multiple linear bodies 3 are different, thus enabling the successive retraction of multiple linear bodies 3. Of course, in another example, the lengths of the second free segments 32 of the multiple linear bodies 3 can also be partially or completely the same, in which case the linear bodies 3 with the same length of second free segments 32 can be retracted synchronously. It should be understood that the length of the second free segment 32 of the linear body 3 refers to the length of the linear body 3 in its extension direction. It should also be understood that the second free segment 32 of the linear body 3 refers to the section of the linear body 3 that is not under stress; that is, the second free segment 32 of the linear body 3 can be bent freely.

[0064] See Figure 4In this embodiment, there are three linear bodies 3: a third linear body x2, a fourth linear body y2, and a fifth linear body z2. These three linear bodies connect to different positions on the implant and need to be separated from and withdrawn from the implant sequentially. Each of the three linear bodies x2, y2, and z2 enters the outer shell 2 from its distal axial position and wraps around a corresponding second winding member 123 after insertion. Preferably, the three linear bodies x2, y2, and z2 are knotted at their initial winding positions to prevent them from detaching from the second winding member 123. After separating from the second winding member 123, each of the three linear bodies x2, y2, and z2 wraps around a first winding member 122. For example, the three linear bodies x2, y2, and z2 are preferably all wrapped within the limiting groove 121 of the first winding member 122.

[0065] As a specific embodiment, the first winding member 122 is a winding spool, the second winding member 123 is a winding shaft, and multiple winding shafts are arranged at intervals in the axial direction of the outer shell 2, so as to ensure that the lengths of the second free segments of the third line x2, the fourth line y2, and the fifth line z2 are all different.

[0066] Continue reading Figure 4 The second free segment of the third thread x2 is the longest, and the second free segment of the fifth thread z2 is the shortest. When the first winding member 122 rotates under the drive of the drive unit 11, causing the thread 3 to gradually wind around it, the fifth thread z2 is first subjected to tension, causing the corresponding second winding member 123 to rotate. After the second winding member 123 rotates, the fifth thread z2 moves towards its proximal end and continues to wind around the corresponding second winding member 123. After the fifth thread z2 moves a certain distance, the fourth thread y2 begins to be subjected to tension, causing the corresponding second winding member 123 to rotate. After the second winding member 123 rotates, the fourth thread y2 moves towards its proximal end and continues to wind around the corresponding second winding member 123. Similarly, after the fourth thread y2 moves a certain distance, the third thread x2 begins to be pulled and causes the corresponding second winding member 123 to rotate. After the second winding member 123 rotates, the third thread x2 moves towards the proximal end and continues to be wound around the corresponding second winding member 123. In this way, the fifth thread z2, the fourth thread y2, and the third thread x2 are successively withdrawn. It should be explained that since the initial state of the second free segment 32 of the linear body 3 is a bent state and is not pulled, as the first winding member 122 rotates, the second free segment 32 of the linear body 3 is stretched from the bent state and gradually becomes a straight state. When the second free segment 32 is straightened, the linear body 3 begins to be pulled by the first winding member 122 and moves towards the proximal end.

[0067] <Example 3>

[0068] The parts that are the same as those in Embodiment 1 will not be described in detail here. The following mainly describes the differences, while the similarities can be found in Embodiment 1.

[0069] Reference Figure 5 and Figure 6 As shown in Embodiment 3, the winding section 12 includes a third winding member 124 and a fourth winding member; the third winding member 124 is connected to the driving section 11; the fourth winding member is rotatably connected to the third winding member 124. Each thread 3 is used to wind around the third winding member 124 or the fourth winding member; the third winding member 124 rotates a certain angle under the drive of the driving section 11, thereby driving the fourth winding member to rotate. It should be explained that the number of fourth winding members can be set according to the number of thread 3, as long as it is ensured that, except for the thread 3 wound on the third winding member 124, each of the other thread 3 can correspond to one fourth winding member.

[0070] In a preferred embodiment, there are multiple fourth winding members connected sequentially, with one fourth winding member rotatably connected to the third winding member 124. After the third winding member 124 rotates by a certain angle, it drives one of the fourth winding members connected to it to rotate. Similarly, after one of the fourth winding members rotates by a certain angle, it drives another fourth winding member connected to it to rotate. Thus, through the successive rotation of the third winding member 124 and the fourth winding members, the linear body 3 wound on the corresponding winding members can be successively retracted.

[0071] Reference Figure 5 As shown, in this embodiment, the third winding member 124 includes a first rotating member 1241 and a second rotating member 1242. The second rotating member 1242 is used to wind a corresponding linear body 3. The first rotating member 1241 is coaxially connected to the driving part 11 and is used to rotate under the drive of the driving part 11. The first rotating member 1241 has a pivot (not labeled) extending axially toward the second rotating member 1242. The second rotating member 1242 is sleeved on the pivot and fixedly connected to the first rotating member 1241. The fourth winding member is sleeved on the pivot and rotatably connected to the first rotating member 1241.

[0072] More specifically, the third winding member 124 and the fourth winding member are preferably connected by a concave-convex fit, and the two fourth winding members are also preferably connected by a concave-convex fit. The third winding member 124 is arranged coaxially with the drive unit 11, and a plurality of fourth winding members are arranged sequentially at intervals on the rotation axis of the drive unit 11.

[0073] Continue to refer to Figure 5 and Figure 6In one specific embodiment, there are multiple fourth winding members, wherein the fourth winding member adjacent to the third winding member 124 is the first fourth winding member 125, and the fourth winding member adjacent to the first fourth winding member 125 is the second fourth winding member 126. The third winding member 124, the first fourth winding member 125, and the second fourth winding member 126 are arranged sequentially at intervals along the rotation axis of the drive member 11. The second rotating member 1242 is provided with a first protrusion 1243 protruding toward the adjacent first fourth winding member 125, and the adjacent first fourth winding member 125 is provided with a first arcuate groove 1251 for accommodating the first protrusion 1243. When the third winding member 124 rotates, the first protrusion 1243 can rotate within the first arcuate groove 1251, and after rotating to the end position of the first arcuate groove 1251, it can drive the adjacent first fourth winding member 125 to rotate.

[0074] Furthermore, the first fourth winding member 125 has a second protrusion 1252 on the side facing the second fourth winding member 126, and the second fourth winding member 126 has a second arcuate groove 1261 that matches the second protrusion 1252. The second protrusion 1252 of the first fourth winding member 125 is rotatable within the second arcuate groove 1261 of the second fourth winding member 126, and can also drive the second fourth winding member 126 to rotate after rotating to the end position of the second arcuate groove 1261. It should be understood that the first fourth winding member 125 may include an odd-numbered fourth winding member at a distance from the third winding member 124, and the second fourth winding member 126 may include an even-numbered fourth winding member at a distance from the third winding member 124.

[0075] This application does not limit the shape and position of the first protrusion 1243, the first arc groove 1251, the second protrusion 1252, and the second arc groove 1261. The specific shape and position of the first protrusion 1243, the first arc groove 1251, the second protrusion 1252, and the second arc groove 1261 can be set according to the retraction requirements of the corresponding linear body 3. In another embodiment, the positions of the first protrusion 1243 and the first arc groove 1251 can be interchanged, that is, the first arc groove is provided on the third winding member 124, and the first protrusion is provided on the first fourth winding member 125. Similarly, the positions of the second protrusion 1252 and the second arc groove 1261 can also be interchanged, that is, the second arc groove is provided on the first fourth winding member 125, and the second protrusion is provided on the second fourth winding member 126.

[0076] See Figure 5 and Figure 6There are three thread-like bodies 3: a sixth thread x3, a seventh thread y3, and an eighth thread z3. These three threads connect to different positions on the implant and need to be separated from and withdrawn from the implant sequentially. Each thread enters the outer shell 2 from its distal axial position. After insertion, the sixth thread x3 is wound around the second rotating member 1242, the seventh thread y3 is wound around the first fourth winding member 125, and the eighth thread z3 is wound around the second fourth winding member 126. Preferably, knots are tied at the initial winding positions of the sixth thread x3, the seventh thread y3, and the eighth thread z3 to prevent them from detaching from their respective winding members.

[0077] After the drive unit 11 rotates, the second rotating member 1242 rotates accordingly, causing the sixth thread x3 to begin moving towards the proximal end. After rotating a certain angle, the second rotating member 1242 drives the first fourth winding member 125 to rotate, which in turn causes the seventh thread y3 to begin moving towards the proximal end. After rotating a certain angle, the first fourth winding member 125 drives the second fourth winding member 126 to rotate, which in turn causes the eighth thread z3 to begin moving towards the proximal end. In this way, the sixth thread x3, the seventh thread y3, and the eighth thread z3 are successively withdrawn.

[0078] In summary, the control handle provided by this invention has a simple structure, is easy to operate, and is inexpensive. It can significantly reduce the complexity of the operator's work, shorten the operation time, and improve the success rate of the operation. Furthermore, the control handle adds a one-button suture removal function, allowing the control handle to simultaneously or sequentially remove multiple sutures simply by operating the suture removal mechanism. This expands the control function of the control handle and simplifies the suture removal steps, thus providing the operator with a convenient operating experience.

[0079] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the present invention.

Claims

1. A control handle for an implant, characterized in that, The device includes a housing, a suture removal mechanism, and multiple sutures; the suture removal mechanism is disposed on the housing; the proximal ends of the multiple sutures all pass through the housing and are connected to the suture removal mechanism; the distal end of at least one suture is used to connect to an implant; the suture removal mechanism is used to control the multiple sutures to move synchronously or successively toward the proximal end of the control handle. The wire removal mechanism includes a drive unit and a winding unit connected together; The winding section includes a first winding member and a plurality of second winding members; the first winding member is connected to the drive section; each of the second winding members is rotatable relative to the housing. Each of the said linear bodies enters from the far end of the outer shell and first wraps around a corresponding second winding member, and then wraps around the first winding member, with the winding directions of the linear body on the first winding member and the second winding member being opposite; After the second winding member is wound, and before the first winding member is wound, each of the wires has a second free segment in the initial state that is not under tension, and the lengths of the second free segments of the multiple wires in the initial state may be the same or different.

2. The control handle of the implant as described in claim 1, characterized in that, The driving part is at least partially disposed outside the housing; the winding part is disposed inside the housing; the driving part is used to drive the winding part to rotate so that multiple wires are wound synchronously or successively on the winding part.

3. The control handle of the implant as described in claim 2, characterized in that, The outer wall of the winding section has a limiting groove along its circumference, and the limiting groove is used for multiple of the wires to be wound therein.

4. The control handle of the implant as described in claim 2 or 3, characterized in that, The first winding element is a winding spool, and / or the second winding element is a winding shaft, with multiple winding shafts arranged at intervals along the axial direction of the housing.

5. The control handle of the implant as described in claim 2 or 3, characterized in that, It also includes a locking mechanism that is slidably connected to the housing; the locking mechanism moves to different positions to give the wire removal mechanism a locked state and an unlocked state; When the wire removal mechanism is in the locked state, the locking mechanism can limit the drive part and / or the winding part to prevent the drive part from rotating; When the unwinding mechanism is in the unlocked state, the locking mechanism can release the restriction on the drive unit and / or the winding unit to allow the drive unit to rotate.

6. The control handle of the implant as described in claim 5, characterized in that, The locking mechanism includes a pusher and a locking member fixedly connected; the pusher is at least partially disposed on the outside of the housing; the locking member is disposed inside the housing and is used for sliding connection with the housing; the locking member can be detachably connected to the winding portion.

7. A control handle for an implant, characterized in that, The device includes a housing, a suture removal mechanism, and multiple sutures; the suture removal mechanism is disposed on the housing; the proximal ends of the multiple sutures all penetrate the housing and are connected to the suture removal mechanism; the distal end of at least one suture is used to connect to an implant; the suture removal mechanism is used to control the multiple sutures to move sequentially toward the proximal end of the control handle. The wire removal mechanism includes a drive unit and a winding unit connected together; Before the winding portion is wound, each of the wires has a first free segment in its initial state that is not under tension, and the lengths of the first free segments of the multiple wires in the initial state are different. Alternatively, the winding section includes a third winding member and a fourth winding member; the third winding member is connected to the driving section; the fourth winding member is rotatably connected to the third winding member; each of the thread-like bodies is used to wind around the third winding member or the fourth winding member; the third winding member rotates at a certain angle under the drive of the driving section and then drives the fourth winding member to rotate.

8. The control handle of the implant as described in claim 7, characterized in that, There are multiple fourth winding elements, which are connected in sequence. One of the fourth winding elements is rotatably connected to the third winding element. After the third winding element rotates at a certain angle, it drives one of the fourth winding elements connected to it to rotate. After the corresponding fourth winding element rotates at a certain angle, it drives another fourth winding element connected to it to rotate.

9. The control handle of the implant as described in claim 8, characterized in that, The third winding member is arranged coaxially with the drive unit; a plurality of fourth winding members are arranged sequentially at intervals on the rotation axis of the drive unit; wherein the third winding member and the fourth winding member are connected by a concave-convex fit, and / or, two fourth winding members are connected by a concave-convex fit.

10. A delivery system comprising a catheter assembly and a control handle for an implant as claimed in any one of claims 1-9, wherein a proximal end of the catheter assembly is connected to the control handle, and distal ends of a plurality of the linear bodies are used to pass through the catheter assembly and connect to the implant.

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