Thread trimming handle and plugging device conveying and forming device

Abstract

The invention discloses a thread trimming handle and a plugging device conveying and forming device, the thread trimming handle comprises a shell, a multi-cavity tube fixing ring, a thread guiding device, a core rod sliding block, a thread locking assembly and a thread trimming assembly, and the plugging device conveying and forming device comprises the thread trimming handle and a plugging device pushing mechanism. The plugging device pushing mechanism comprises a plugging device, a multi-cavity tube, a core rod, a forming pull wire and a tensioning wire. According to the occluder conveying and forming device, the thread trimming handle and the occluder pushing mechanism are preassembled into a whole, the surgical operation process is optimized, the convenience and safety of surgical operation are remarkably improved, the thread trimming success rate is greatly increased, and smooth implementation of the surgery is guaranteed; meanwhile, connection between the thread trimming handle and the plugging device is established through the forming pull thread and the tensioning thread, the overall structural design is simplified, and surgical operation steps and potential risks are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a wire-cutting handle and a delivery and forming device for a occluder. Background Art

[0002] Patent foramen ovale (PFO) is a congenital heart disease with structural abnormalities. Currently, transcatheter delivery of occluders is commonly used in clinical treatment. There are two types of traditional PFO occluders, namely metal occluders and biodegradable occluders. Due to the unique self-expanding property of nitinol alloy, the metal occluder can automatically form after being released from the delivery sheath, and the mandrel can be directly loosened after forming to release the occluder. However, the future development trend is likely to be towards biodegradable occluders, and the delivery system of biodegradable occluders is usually more complex. Since the material of the biodegradable occluder has no elasticity, a forming step is required during the occlusion surgery, and the occlusion is completed by fixing the wire of the occluder at the tail end. However, in the current existing method, before the surgery, the doctor connects the occluder and the delivery system through a threaded connection, and the doctor needs to connect the wire and the handle; and after the occlusion surgery is completed, the operator needs to use scissors to cut one of the wires, and then pull the uncut wire out from the body all the way, which is a relatively cumbersome process and requires the operator to be more careful.

[0003] Deficiencies in the use of the catheter delivery occluder in the prior art:

[0004] 1. The traditional metal patent foramen ovale occluder is composed of a nitinol alloy framework and a polyester fiber flow-blocking membrane, and adopts a double-disk structure design. It relies on the self-expanding property of nitinol alloy to clamp the patent foramen ovale to achieve the occlusion function. However, since the metal stent is a non-degradable material, there are many potential risks in long-term retention in the human heart. For example, nickel-titanium ions may precipitate, affecting human health; during magnetic resonance imaging, the metal material will generate heat, posing a threat to the safety of patients.

[0005] 2. Although the existing biodegradable patent foramen ovale occluders have made breakthroughs in the biodegradability of the material, there are still obvious defects. To facilitate the doctor to observe the position of the occluder in real time through DSA angiography, most of the biodegradable occluders on the market add a platinum-iridium material imaging ring. However, this imaging ring is non-degradable and will bring unknown risks when retained in the heart for a long time, limiting the clinical application effect of the biodegradable occluder.

[0006] 3. In terms of the operation process, the existing biodegradable patent foramen ovale occluder system has significant complexity. During the surgery, the occluder and the delivery system need to be temporarily assembled. Among them, the wire-cutting step after the occluder is released is particularly cumbersome, and the tail end of the occluder and the head end of the mandrel of the delivery system are connected by a threaded connection. Doctors need to specifically learn the operation skills, which not only prolongs the doctor's learning cycle, but also limits the scope of use of the product, and at the same time increases the manufacturing cost of the product.

[0007] 4. There is also room for optimization in the design of existing delivery and shaping devices for patent foramen ovale occluders. Currently, this system mostly consists of a mandrel, a delivery sheath, and a loader. The operation during the surgical process relies on DSA angiography, which will cause certain radiation damage to patients and clinical staff. Moreover, at the end stage of the operation, doctors need to use scissors to cut the shaping wire and pull it completely out of the body. The operation process is complex and there is a need for improvement. Summary of the Invention

[0008] In view of this, the present invention provides a wire-cutting handle and a delivery and shaping device for an occluder to solve at least one of the above technical problems.

[0009] To achieve the above object, the present invention adopts the following technical solutions:

[0010] A wire-cutting handle, comprising:

[0011] A housing having a front-end hole, a side-wall hole, an upper-wall hole, a lower-wall hole, an upper-wire hole, and a lower-wire hole. The upper-wire hole is for the shaping wire to enter and exit the housing, and the lower-wire hole is for the tension wire to enter and exit the housing;

[0012] A multi-lumen tube fixing ring coaxial with the front-end hole and fixed to the front part of the inner cavity of the housing for fixing the multi-lumen tube extending into the inner cavity of the housing from the front-end hole;

[0013] A wire guide fixed to the inner cavity of the housing and located behind the multi-lumen tube fixing ring. The wire guide includes an inlet hole, a first wire hole, and a second wire hole. The inlet hole is coaxial with the front-end hole, and the inlet hole, the first wire hole, and the second wire hole form a herringbone structure;

[0014] A mandrel slider disposed in the inner cavity of the housing in a manner that can move back and forth along the center line of the front-end hole and located behind the wire guide, for connecting with the end of the mandrel extending into the inner cavity of the housing from the front-end hole;

[0015] A wire locking assembly, including an upper wire locking assembly and a lower wire locking assembly. The upper wire locking assembly penetrates the upper-wall hole and is used for locking and unlocking the shaping wire passing through the first wire hole. The lower wire locking assembly penetrates the lower-wall hole and is used for locking and unlocking the tension wire passing through the second wire hole;

[0016] And a wire-cutting assembly that slidably penetrates the side-wall hole and is connected to the mandrel slider for driving the mandrel slider to move back and forth relative to the multi-lumen tube.

[0017] To better implement the above technical solution, optionally, the multi-chamber tube fixing ring includes an annular body and two clamping protrusions symmetrically fixed on the outer wall of the middle part of the annular body along the central axis of the annular body. A clamping groove is formed between the two clamping protrusions. A first installation groove for defining the multi-chamber tube fixing ring and an anti-rotation clamping bar that snaps into the clamping groove are provided in the inner cavity of the housing. The central hole of the annular body is used to fix the end of the multi-chamber tube extending into the inner cavity of the housing from the front hole.

[0018] Optionally, at least one convex ring is respectively fixed on the upper side and the lower side of the front end of the wire lead. A second installation groove for placing the wire lead and a fixing clamping bar that snaps into each convex ring are provided in the inner cavity of the housing.

[0019] Optionally, the upper wire locking assembly includes:

[0020] A fixed seat, a strip-shaped groove is opened in the upper part of the fixed seat, and a stop boss is provided at the rear end of the strip-shaped groove;

[0021] A wire locking slider, which is slidably arranged in the strip-shaped groove. A first through hole is opened in the middle of the wire locking slider in the up-down direction, and the inner wall of the rear side of the first through hole is a first inclined surface;

[0022] A wire locking button, which has a second inclined surface that slidably cooperates with the first inclined surface;

[0023] And a wire locking spring, the front end of the wire locking spring abuts against the rear end of the wire locking slider, and the rear end abuts against the inner cavity of the housing;

[0024] Under normal conditions, under the pushing action of the wire locking spring, the front end of the wire locking slider abuts against the inner wall of the first wire hole and clamps the formed wire at this position; when wire extraction is required, press down the wire locking button, the wire locking button moves downward and drives the wire locking slider to move backward through the cooperation of the second inclined surface and the first inclined surface until it abuts against the stop boss and stops. At this time, the wire locking spring is compressed, and the front end of the wire locking slider disengages from the inner wall of the first wire hole, unlocking the formed wire.

[0025] Optionally, the rear sides of the first wire hole and the second wire hole are both open structures. First guiding grooves for the front part of the wire locking slider of the upper wire locking assembly to slide back and forth are provided on the left and right side walls of the first wire hole. First guiding grooves for the front part of the wire locking slider of the lower wire locking assembly to slide back and forth are provided on the left and right side walls of the second wire hole.

[0026] Optionally, guiding parts that cooperate with the corresponding first guiding grooves are provided on the front parts of the upper wire locking assembly and the wire locking slider of the upper wire locking assembly, and the width of the guiding part is smaller than the width of the wire locking slider.

[0027] Optionally, moving fit portions are symmetrically and fixedly provided at the upper and lower ends of the mandrel slider. A clamping plate guide rail which is in damped sliding fit with the upper moving fit portion of the mandrel slider is provided at the lower end of the upper wire locking assembly fixing seat, and a clamping plate guide rail which is in damped sliding fit with the lower moving fit portion of the mandrel slider is provided at the lower end of the lower wire locking assembly fixing seat.

[0028] Optionally, the wire cutting assembly includes a wire cutting push button, a pressing spring and a first connecting portion. The first connecting portion is fixedly provided on the side wall of the corresponding side wall hole of the mandrel slider. The side wall hole is in a strip structure along the front-back direction of the housing. The wire cutting push button includes a pushing and pulling portion located outside the housing, a moving portion slidably fitted with the side wall hole, and a second connecting portion located inside the housing. The pushing and pulling portion, the moving portion and the second connecting portion are integrally connected. One end of the pressing spring abuts against the inside of the first connecting portion, and the other end abuts against the inside of the second connecting portion;

[0029] Under normal conditions, the pressing spring is in a natural state. The portion of the moving portion close to the second connecting portion cooperates with the inner wall of the side wall hole. The middle section of the pressing spring is exposed between the first connecting portion and the second connecting portion. The wire cutting push button is locked in the front-back direction of the side wall hole; when cutting the wire, pressing the wire cutting push button makes the pressing spring in a compressed state. The portion of the moving portion close to the pushing and pulling portion cooperates with the inner wall of the side wall hole. The middle section of the pressing spring is compressed into the first connecting portion and the second connecting portion. The wire cutting push button is unlocked in the front-back direction of the side wall hole.

[0030] Optionally, both the first connecting portion and the second connecting portion are in a cylindrical structure. When pressing the wire cutting push button to make the pressing spring in a compressed state, the end portion of the first connecting portion close to the wire cutting push button extends into the second connecting portion.

[0031] A plugger delivery and forming device includes a wire cutting handle according to any one of the above, and further includes a plugger pushing mechanism, and the plugger pushing mechanism includes:

[0032] A plugger, which includes a forming knot;

[0033] A multi-lumen tube, which has a central channel and at least one side channel that is concentric with the central channel. A sheath is fixedly sleeved at the proximal end of the central channel. A first slot is provided on the side wall of the sheath;

[0034] A mandrel, which passes through the central channel in a manner that it can move forward and backward and is prevented from rotating. A wire cutting tube located inside the sheath is fixedly provided at the proximal end of the mandrel. A second slot is provided at the proximal end of the wire cutting tube. The distal end of the mandrel is fixedly provided in the central hole of the mandrel slider;

[0035] The formed pulling wire, one end of the formed pulling wire enters from the upper wire hole, passes through the first wire hole, the side channel, passes through the formed knot, the second slot hole, the first slot hole, the side channel, the first wire hole, and then is led out from the upper wire hole;

[0036] And the tensioning wire, one end of the tensioning wire enters from the lower wire hole, passes through the second wire hole, the side channel, winds around the plugging device, the second slot hole, the first slot hole, the side channel, the second wire hole, and then is led out from the lower wire hole;

[0037] Wherein, at least one edge part of the first slot hole and the second slot hole is provided with a cutting edge, and the relative movement of the mandrel along the axial direction of the central channel with respect to the multi-cavity tube can make the second slot hole and the first slot hole misaligned, thereby cutting the formed pulling wire and the tensioning wire through the cutting edge.

[0038] The beneficial effects of the present invention:

[0039] A plugging device conveying and forming device of the present invention has the following technical effects:

[0040] 1. The wire cutting handle and the plugging device pushing mechanism are pre-assembled into one body, optimizing the surgical operation process, significantly improving the convenience and safety of the surgical operation, greatly increasing the wire cutting success rate, and ensuring the smooth implementation of the operation; at the same time, the connection between the wire cutting handle and the plugging device is established through the formed pulling wire and the tensioning wire, simplifying the overall structural design, and effectively reducing the surgical operation steps and potential risks.

[0041] 2. The pre-tightening of the left umbrella disc, the forming of the plugging device, and the push button wire cutting function can be completed through the wire cutting handle. This process can be completed by only the surgeon alone. This design helps to shorten the operation time, reduce the radiation dose received by the operator and the patient, and improve the accuracy and safety of the operation at the same time.

[0042] 3. The integrated design reduces the learning cost of the operator, ensuring that the entire operation process of the operator is smoother, especially during the wire cutting process. The doctor only needs to push the wire cutting push button to complete it, which is efficient and safe. Brief description of the drawings

[0043] Figure 1 is the front view of a plugging device conveying and forming device according to Embodiment 1 of the present invention;

[0044] Figure 2 is Figure 1 the front view of the plugging device pushing mechanism in

[0045] Figure 3 is Figure 2 the three-dimensional schematic diagram of the plugging device in

[0046] Figure 4 is Figure 3 the schematic diagram of the plugging device from the initial structure to the first-stage plugging form in

[0047] Figure 5 is Figure 3 Schematic diagram of the occluder from the initial structure to the second-stage occlusion form;

[0048] Figure 6 is Figure 2 Exploded view of;

[0049] Figure 7 is Figure 6 Stereoscopic schematic diagram of a part of the structure at the first angle in;

[0050] Figure 8 is Figure 6 Stereoscopic schematic diagram of a part of the structure at the second angle in;

[0051] Figure 9 is Figure 1 Front view of the shearing device in;

[0052] Figure 10 is Figure 9 Exploded view of;

[0053] Figure 11 is Figure 10 Schematic diagram of the combination of the locking wire assembly in;

[0054] Figure 12 is Figure 10 Schematic diagram of the wire-cutting assembly in the normal state in;

[0055] Figure 13 is Figure 10 Schematic diagram of the wire-cutting assembly in the pressed state in;

[0056] Figure 14 It is a combined and exploded schematic diagram of an occluder delivery and forming device, a loader, and a delivery sheath;

[0057] Figure 15 Schematic diagram of the surgical process of the occluder delivery and forming device, the delivery sheath, and the loader (one);

[0058] Figure 16 Schematic diagram of the surgical process of the occluder delivery and forming device, the delivery sheath, and the loader (two);

[0059] Figure 17 Schematic diagram of the surgical process of the occluder delivery and forming device, the delivery sheath, and the loader (three);

[0060] Figure 18 Schematic diagram of the surgical process of the occluder delivery and forming device, the delivery sheath, and the loader (four);

[0061] Figure 19 Schematic diagram of the surgical process of the occluder delivery and forming device, the delivery sheath, and the loader (five);

[0062] Figure 20 It is a schematic diagram of the surgical process of the occluder delivery forming device, the delivery sheath tube, and the loader (VI);

[0063] Figure 21 It is a schematic diagram of the cooperation between the sheath and the wire cutting tube (the sheath and the wire cutting tube are radially coincident, and both the forming wire and the tension wire are one wire);

[0064] Figure 22 It is a schematic diagram of the cooperation between the sheath and the wire cutting tube (the sheath and the wire cutting tube are radially misaligned to cut the forming wire and the tension wire).

[0065] Reference numerals:

[0066] Occluder pushing mechanism 100, occluder 110, left umbrella disc 111, right umbrella disc 112, forming knot wire 113, forming knot 1131, hollow waist 114, hollow hot melt tail end 115, flow blocking membrane 116;

[0067] Multi-lumen tube 120, central channel 121, side channel 122, first MARK point marking ring 123, second MARK point marking ring 124, third MARK point marking ring 125, sheath 130, cylindrical conical section 131, straight section 132, first slot 133, strip-shaped guide groove 134, first lead hole 135, second lead hole 136, mandrel 140, small diameter part 141, wire cutting tube 150, second slot 151, cutting edge 152, guide protrusion 152, forming wire 160, tension wire 170;

[0068] Wire cutting handle 200, housing 210, front end cover 211, front end hole 2111, rear end cover 212, upper housing 213, upper wall hole 2131, upper wire hole 2132, lower housing 214, lower wall hole 2141, lower wire hole 2142, anti-rotation clamping strip 2143, fixed clamping strip 2144, side wall hole 215;

[0069] Multi-lumen tube fixing ring 220, annular body 221, clamping protrusion 222, clamping groove 223, wire lead 230, wire inlet hole 231, first wire hole 232, second wire hole 233, first guide groove 234, convex ring 234, mandrel slider 240, slider 241, first connecting part 242, wire locking assembly 250, fixed seat 251, strip-shaped groove 2511, stop boss 2512, clamping plate guide rail 2513, wire locking slider 252, first through hole 2521, first inclined surface 2522, guide part 2523, wire locking button 253, second inclined surface 2531, wire locking spring 254, wire cutting push button 255, pushing and pulling part 2551, moving part 2552, second connecting part 2553, pressing spring 256;

[0070] Delivery sheath tube 300;

[0071] Loader 400. DETAILED DESCRIPTION

[0072] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments, wherein the same components are represented by the same reference numerals.

[0073] Example 1

[0074] like Figure 1 As shown, an occluder conveying and molding device includes an occluder pushing mechanism 100 and a wire cutting handle 200.

[0075] like Figure 2 As shown, the occluder pushing mechanism 100 includes an occluder 110 , a multi-lumen tube 120 , a core rod 140 , a forming pull wire 160 , and a tension wire 170 .

[0076] like Figures 3 - 5 As shown, the occluder 110 includes a molded knot 1131. Specifically, the occluder 110 includes a left umbrella disc 111, a right umbrella disc 112, a molded knot line 113, and a hollow waist 114 connecting the left umbrella disc 111 and the right umbrella disc 112. The center of one end of the right umbrella disc 112 away from the left umbrella disc 111 is provided with a hollow hot-melt tail end 115 connected to the hollow waist 114. One end of the molded knot line 113 is fixed in the left umbrella disc 111, and the other end is sequentially wound around the left umbrella disc 111, passes through the hollow waist 114 and forms a molded knot 1131 in the hollow hot-melt tail end 115. After the molded knot 1131 is pulled out of the hollow waist 114, it automatically expands and blocks in the hollow hot-melt tail end 115 or blocks at the lower end of the hollow hot-melt tail end 115. Both the left umbrella disc 111 and the right umbrella disc 112 are equipped with a flow-blocking membrane 116.

[0077] In an embodiment of the invention, the left umbrella disc 111, the waist 114, the right umbrella disc 112, the hollow hot-melt tail end 115 and the molded knot 113 are all made of PDO material, wherein the left umbrella disc 111, the waist 114 and the right umbrella disc 112 are all woven by a weaving machine, and after weaving, they are placed in a drying box at a certain temperature for shaping through a shaping tool, and the hollow hot-melt tail end 115 is shaped by a hot-melt welding machine, and the baffle film 116 is made of PLCL material, and the two baffle films 116 are sewn in the left umbrella disc 111 and the right umbrella disc 112 of the occluder 110 with degradable PDO material.

[0078] In the embodiment of the invention, the diameter of the center hole of the hollow hot melt tail end 115 is larger than the diameter of the center hole of the right umbrella plate 112, and the center hole of the right umbrella plate 112 is used to penetrate the forming knot line 113. The occluder 110 has a two-stage adjustment mode, such as Figure 4 As shown, the forming knot 1131 is placed in the center hole of the hollow hot melt tail end 115 to form the first level of adjustment;Figure 5 As shown, the molding knot 1131 is placed outside the center hole of the hollow hot-melt tail end 115 to form a second-level adjustment, wherein the second-level adjustment is suitable for normal heart thickness, and the first-level adjustment is suitable for patients with hypertrophic fossa ovale. For patients with hypertrophic fossa ovale, the first-level adjustment method can avoid forced tightening of the molding knot 1131 and causing the molding knot 1131 to slip, thereby further avoiding the waste of the occluder 110 caused by replacing the occluder 110 due to the slipping of the molding knot 1131 during clinical surgery.

[0079] The molding method of the occluder 110 in the embodiment of the present invention is as follows: when the occluder 110 enters the heart, the left umbrella plate 111 and the right umbrella plate 112 are respectively in the left atrium and the right atrium of the heart, and the shape of the occluder 110 has reached the desired state, but because the material of the occluder 110 does not have the same self-shaping property as metal, it is necessary to pull the molding pull wire 160 to drive the molding knot 1131 to move downward. When the molding knot 1131 reaches the hollow hot-melt tail end 115, the expansion property of the molding knot 1131 increases, and it is stuck in the hollow hot-melt tail end 115, forming a primary occlusion (such as Figure 4 As shown in FIG. 1 , the forming knot 1131 is continuously pulled downward, and the forming knot 1131 is stuck outside the hollow hot melt tail end 115 to form a secondary plugging (as shown in FIG. 1 ). Figure 5 As shown), the occluder 110 is finally formed.

[0080] like Figures 6 - 8 As shown, the multi-lumen tube 120 has a central channel 121 and at least one side channel 122 which is concentric with the central channel 121. A sheath 130 is fixedly sheathed at the proximal end of the central channel 121. A first slot 133 is formed on the side wall of the sheath 130.

[0081] In the embodiments of the present invention, it should be noted that the proximal end refers to the end of the same component relatively close to the heart, and the distal end refers to the end of the same component relatively far from the heart.

[0082] The mandrel 140 is inserted into the central passage 121 in a manner that it can move forward and backward and is non-rotatable. A wire cutting tube 150 located in the sheath 130 is fixedly disposed at the proximal end of the mandrel 140. A second slot 151 is disposed at the proximal end of the wire cutting tube 150. The distal end of the mandrel 140 is fixedly disposed in the central hole of the mandrel slider 240.

[0083] Specifically, the wire cutting tube 150 and the core rod 140 are both made of stainless steel. The proximal end of the core rod 140 has a small diameter portion 141. The distal end of the wire cutting tube 150 is sleeved on the small diameter portion 141 of the core rod 140 and fixed by laser welding, so that the wire cutting tube 150 and the core rod 140 form an integral structure.

[0084] One end of the forming pull wire 160 enters from the upper wire hole 2132, passes through the first wire hole 232, the side channel 122, passes through the forming knot 1131, the second slot hole 151, the first slot hole 133, the side channel 122, the first wire hole 232, and then exits from the upper wire hole 2132;

[0085] The tensioning wire 170, one end of the tensioning wire 170 enters from the lower wire hole 2142, passes through the second wire hole 233, the side channel 122, winds around the plugging device 110, the second slot hole 151, the first slot hole 133, the side channel 122, the second wire hole 233, and then exits from the lower wire hole 2142;

[0086] The plugging device pushing mechanism 100 of the present invention uses the forming pull wire 160 and the tensioning wire 170 to fixedly connect the plugging device 110 to the sheath 130, and at the same time controls the final forming of the plugging device 110 through the forming pull wire 160. This connection structure replaces the existing threaded connection. When separating the plugging device 110 from the conveying device, only the forming pull wire 160 and the tensioning wire 170 need to be cut. Its structure is simple and the operation is convenient.

[0087] In the embodiment of the present invention, there are four side channels 122 arranged around the side channel 122. The tensioning wire 170 and the forming pull wire 160 each pass through two side channels 122. The tensioning wire 170 and the forming pull wire 160 are threaded through the four side channels 122, so that the tensioning wire 170 and the forming pull wire 160 have independent wire paths, avoiding the problem of winding and knotting, thereby improving the convenience of the operation.

[0088] As Figure 6 shown, the outer wall of the tail of the multi-lumen tube 120 is provided with a first MARK point marking ring 123, a second MARK point marking ring 124, and a third MARK point marking ring 125. The first MARK point marking ring 123, the second MARK point marking ring 124, and the third MARK point marking ring 125 cooperate with ultrasound to judge the position of the plugging device 110 in real time. Specifically, the first MARK point marking ring 123 is used to judge that the left umbrella disk 111 is flush with the proximal end of the delivery sheath 300 (the specific function will be explained later), the second MARK point marking ring 124 is used to judge that the left umbrella disk 111 is completely exposed in the left atrium of the heart, and the third MARK point marking ring 125 is used to judge that the plugging device is completely in the plugging state.

[0089] As Figure 7 and Figure 8As shown, there are two first slots 133. The forming wire 160 and the tensioning wire 170 respectively pass through one first slot 133. There is one second slot 151. Cutting edges 152 are provided at the edge of the first slot 133 close to the second slot 151 and at the edge of the second slot 151 close to the first slot 133. The second slot 151 moves with the mandrel 140 to be radially coincident or misaligned with the first slot 133, that is, the forming wire 160 and the tensioning wire 170 pass through the second slot 151 together and then extend out from the two first slots 133 respectively. The cutting edges 152 are provided so that when the forming wire 160 and the tensioning wire 170 are in a fixed state and the mandrel 140 moves backward relative to the multi-cavity tube 120, during the process that the second slot 151 generates a displacement relative to the first slot 133, the cutting edges 152 are used to cut off the forming wire 160 and the tensioning wire 170.

[0090] In an embodiment of the present invention, a strip-shaped guiding groove 134 is axially opened at the distal end of the sheath 130. A guiding protrusion 152 is provided on the outer wall of the wire cutting tube 150. The guiding protrusion 152 is movably matched with the strip-shaped guiding groove 134 so that the mandrel 140 is arranged in the multi-cavity tube 120 in a non-rotating manner at this position. By adopting the method of matching the guiding protrusion 152 with the strip-shaped guiding groove 134, when the mandrel 140 moves backward relative to the multi-cavity tube 120, the second slot 151 moves backward relative to the first slot 133, thereby ensuring that the cutting edges 152 cut off the forming wire 160 and the tensioning wire 170 in a preset manner.

[0091] More specifically, the sheath 130 includes a cylindrical conical section 131 and a straight section 132 connected to the small-diameter end of the cylindrical conical section 131. The cylindrical conical section 131 is used to accommodate the hollow hot-melt tail end 115. A first lead hole 135 and a second lead hole 136 are provided at the conical part of the cylindrical conical section 131. The forming wire 160 enters the sheath 130 through the first lead hole 135, and the tensioning wire 170 enters the sheath 130 through the second lead hole 136. The first slot 133 is opened at the part of the straight section 132 close to the cylindrical conical section 131. The first lead hole 135 and the second lead hole 136 are provided to facilitate the separation of the forming wire 160 and the tensioning wire 170 here, so as to facilitate their entry into the wire cutting tube 150.

[0092] As Figures 9 to 13 shown, the wire cutting handle 200 includes a housing 210, a multi-cavity tube fixing ring 220, a wire lead 230, a mandrel slider 240, a wire locking assembly 250, and a wire cutting assembly.

[0093] As Figure 10 shown, the housing 210 has a front end hole 2111, a side wall hole 215, an upper wall hole 2131, a lower wall hole 2141, an upper wire hole 2132, and a lower wire hole 2142 that communicate with the inner cavity of the housing 210.

[0094] Among them, the front-end hole 2111 is used for threading the multi-lumen tube 120 and the mandrel 140 sleeved inside the multi-lumen tube 120. The side-wall hole 215 is used for threading the wire-cutting assembly. The upper-wall hole 2131 and the lower-wall hole 2141 are used for threading the wire-locking assembly 250. The upper wire hole 2132 is used for the forming wire 160 to enter and exit the housing 210, and the lower wire hole 2142 is used for the tension wire 170 to enter and exit the housing 210;

[0095] In an embodiment of the present invention, for the convenience of assembling the components inside the housing 210, the housing 210 is assembled by a front-end cover 211, a rear-end cover 212, an upper housing 213, and a lower housing 214. The housing 210 is a common structure and only needs to meet the assembly requirements, and the specific structure will not be elaborated.

[0096] The multi-lumen tube fixing ring 220 is coaxial with the front-end hole 2111 and is fixed to the front part of the inner cavity of the housing 210 for the end of the multi-lumen tube 120 extending into the inner cavity of the housing 210 from the front-end hole 2111;

[0097] As Figure 10 shown, the multi-lumen tube fixing ring 220 includes an annular body 221 and two clamping protrusions 222 symmetrically fixed to the outer wall of the middle part of the annular body 221 along the central axis of the annular body 221. A clamping groove 223 is formed between the two clamping protrusions 222. The inner cavity of the housing 210 is provided with a first installation groove for limiting the multi-lumen tube fixing ring 220 and an anti-rotation clamping bar 2143 that is clamped into the clamping groove 223. The central hole of the annular body 221 is used for fixing the end of the multi-lumen tube 120 extending into the inner cavity of the housing 210 from the front-end hole 2111.

[0098] Specifically, the first installation groove includes an upper half part provided in the upper housing 213 and a lower half part provided in the lower housing 214. The upper half part and the lower half part jointly limit the multi-lumen tube fixing ring 220, and at the same time, the anti-rotation clamping bar 2143 clamped into the clamping groove 223 is used to fix the multi-lumen tube fixing ring 220.

[0099] As Figure 10 shown, the wire guide 230 is fixed to the inner cavity of the housing 210 and is located behind the multi-lumen tube fixing ring 220. The wire guide 230 includes a wire inlet hole 231, a first wire hole 232, and a second wire hole 233. The wire inlet hole 231 is coaxial with the front-end hole 2111, and the wire inlet hole 231, the first wire hole 232, and the second wire hole 233 form a herringbone structure;

[0100] Specifically, at least one convex ring 234 is fixedly provided on the upper side and the lower side of the front end of the wire guide 230. The inner cavity of the housing 210 is provided with a second installation groove for placing the wire guide 230 and a fixing clamping bar 2144 that is clamped into each convex ring 234.

[0101] In an embodiment of the present invention, two convex rings 234 are fixedly provided at intervals on the upper and lower sides of the front end of the wire lead 230. The upper housing 213 and the lower housing 214 are fixed with fixing strips 2144 corresponding to the convex rings 234 one by one. The wire lead 230 is stably fixed in the housing 210 by the cooperation of the fixing strips 2144 and the convex rings 234.

[0102] The mandrel slider 240 is arranged in the inner cavity of the housing 210 in a manner that it can move back and forth along the center of the front end hole 2111 and is located behind the wire lead 230, and is used to fix the mandrel 140 extending into the inner cavity of the housing 210 from the front end hole 2111.

[0103] The wire locking assembly 250 includes an upper wire locking assembly and a lower wire locking assembly. The upper wire locking assembly penetrates through the upper wall hole 2131 and is used to lock and unlock the formed wire 160 passing through the first wire hole 232. The lower wire locking assembly penetrates through the lower wall hole 2141 and is used to lock and unlock the tensioned wire 170 passing through the second wire hole 233.

[0104] The wire cutting assembly slidably penetrates through the side wall hole 215 and is connected to the mandrel slider 240, and is used to drive the mandrel slider 240 to move back and forth relative to the multi-cavity tube 120.

[0105] When the wire cutting handle 200 of the embodiment of the present invention is used, based on the wire locking assembly 250 locking the rear parts of the formed wire 160 and the tensioned wire 170, the wire cutting assembly is used to drive the mandrel 140 and the cutting tube 150 to move backward relative to the multi-cavity tube 120 by moving backward, so that the cutting tube 150 generates a backward displacement relative to the sheath 130, synchronously causing the first slot 133 and the second slot 151 to be misaligned, and using the cutting edge 152 to cut the formed wire 160 and the tensioned wire 170. Then, the wire locking assembly 250 is pressed to make the formed wire 160 and the tensioned wire 170 in an unlocked state. At this time, the disconnected formed wire 160 and tensioned wire 170 can be slowly pulled out from outside the housing 210.

[0106] As Figure 10 and Figure 11 shown, the upper wire locking assembly includes: a fixed seat 251, a wire locking slider 252, a wire locking button 253, and a wire locking spring 254.

[0107] A strip-shaped groove 2511 is formed in the upper part of the fixed seat 251. A stop boss 2512 is provided at the rear end of the strip-shaped groove 2511. The wire locking slider 252 is slidably arranged in the strip-shaped groove 2511. A first through hole 2521 is formed in the middle of the wire locking slider 252 in the up-down direction. The inner wall of the rear side of the first through hole 2521 is a first inclined surface 2522. The wire locking button 253 has a second inclined surface 2531 that slidably cooperates with the first inclined surface 2522. The front end of the wire locking spring 254 abuts against the rear end of the wire locking slider 252, and the rear end abuts against the inner cavity of the housing 210.

[0108] Under normal conditions, under the pushing action of the thread-locking spring 254, the front end of the thread-locking slider 252 abuts against the inner wall of the first wire hole 232 and clamps the formed wire 160 here. When wire extraction is required, press the thread-locking button 253 downward. The thread-locking button 253 moves downward and drives the thread-locking slider 252 to move backward by the cooperation of the second inclined surface 2531 and the first inclined surface 2522 until it abuts against the stop boss 2512 and stops. At this time, the thread-locking spring 254 is compressed, and the front end of the thread-locking slider 252 disengages from the inner wall of the first wire hole 232, unlocking the formed wire 160 and the tensioned wire 170. Designing two upper and lower thread-locking sliders 252 can fix the rear parts of the formed wire 160 and the tensioned wire 170 under normal conditions.

[0109] Specifically, the rear sides of both the first wire hole 232 and the second wire hole 233 are open structures. The left and right side walls of the first wire hole 232 are provided with first guiding grooves 234 for the front part of the thread-locking slider 252 of the upper thread-locking assembly to slide back and forth. The left and right side walls of the second wire hole 233 are provided with first guiding grooves 234 for the front part of the thread-locking slider of the lower thread-locking assembly to slide back and forth. The front parts of the upper thread-locking assembly and the thread-locking slider 252 of the upper thread-locking assembly are provided with guiding parts 2523 that cooperate with the corresponding first guiding grooves 234. The width of the guiding part 2523 is smaller than the width of the thread-locking slider 252. Adding the guiding part 2523 and the first guiding groove 234 can control the precision of the upper and lower thread-locking assemblies, thereby improving the reliability of the thread-locking assembly for clamping and fixing the formed wire 160 and the tensioned wire 170.

[0110] As Figure 10 shown, slider 241 is symmetrically fixed to the upper and lower ends of the mandrel slider 240. The lower end of the fixed seat 251 of the upper thread-locking assembly is provided with a clamping plate guide rail 2513 that slidably engages with the upper slider 241 of the mandrel slider 240 with damping. The lower end of the fixed seat 251 of the lower thread-locking assembly is provided with a clamping plate guide rail 2513 that slidably engages with the lower slider 241 of the mandrel slider 240 with damping. Setting the clamping plate guide rail 2513 on the fixed seat 251 can make the overall structure more reasonable and reliable.

[0111] As Figures 12 to 13 shown, the wire-cutting assembly includes a wire-cutting push button 255, a pressing spring 256, and a first connecting part 242. The first connecting part 242 is fixedly arranged on the side wall of the side wall hole 215 corresponding to the mandrel slider 240. The side wall hole 215 is in a strip structure along the front-back direction of the housing 210. The wire-cutting push button 255 includes a pushing and pulling part 2551 located outside the housing 210, a moving part 2552 slidably engaged with the side wall hole 215, and a second connecting part 2553 located inside the housing 210. The pushing and pulling part 2551, the moving part 2552, and the second connecting part 2553 are integrally connected. One end of the pressing spring 256 abuts against the inside of the first connecting part 242, and the other end abuts against the inside of the second connecting part 2553;

[0112] Under normal conditions, the pressing spring 256 is in a natural state. The part of the moving portion 2552 close to the second connecting portion 2553 cooperates with the inner wall of the side wall hole 215. The middle section of the pressing spring 256 is exposed between the first connecting portion 242 and the second connecting portion 2553. The wire cutting push button 255 is locked in the front - rear direction of the side wall hole 215. When cutting the wire, pressing the wire cutting push button 255 makes the pressing spring 256 in a compressed state. The part of the moving portion 2552 close to the pushing - pulling portion 2551 cooperates with the inner wall of the side wall hole 215. The middle section of the pressing spring 256 is compressed into the first connecting portion 242 and the second connecting portion 2553. The wire cutting push button 255 is unlocked in the front - rear direction of the side wall hole 215. By adopting the above - mentioned wire cutting assembly, it can be avoided that the doctor accidentally operates to push and pull the wire cutting push button 255 backward, resulting in accidentally cutting the forming wire 160 and the tensioning wire 170.

[0113] In the embodiment of the present invention, both the first connecting portion 242 and the second connecting portion 2553 are in a cylindrical structure. And the part of the moving portion 2552 close to the pushing - pulling portion 2551 is in contact with the inner wall of the side wall hole 215. The end of the first connecting portion 242 close to the wire cutting push button 255 extends into the second connecting portion 2553. When pressing the wire cutting push button 255, the wire cutting push button 255 moves into the housing cavity, making the second connecting portion 2553 sleeved on the first connecting portion 242. At this time, the wire cutting assembly can be pushed backward to drive the mandrel 140 to move backward. When releasing the wire cutting push button 255, the pressing spring 256 resets to drive the second connecting portion 2553 to disengage from the first connecting portion 242. At this time, pushing the wire cutting push button 255 backward can only drive the pressing spring 256 to twist but cannot drive the mandrel 140 to move backward.

[0114] Embodiment 3

[0115] As Figure 14 shown, a plugging device delivery and forming device is used in cooperation with a delivery sheath 300 and a loader 400.

[0116] In the embodiment of the present invention, it should be noted that: both the delivery sheath 300 and the loader 400 are prior arts, forming a complete set of systems with the plugging device delivery and forming device of the present invention.

[0117] In the embodiment of the present invention, before use, the plugging device pushing mechanism 100 and the wire cutting handle 200 are pre - connected together.

[0118] The usage mode of a plugging device delivery and forming device of the present invention is as follows:

[0119] S10. After the puncture is completed, the delivery sheath 300 is delivered to the left atrium by using a guide wire.

[0120] In S10, this step is exactly the same as the existing plugging device delivery method.

[0121] S20. Completely accommodate the occluder 110 within the loader 400;

[0122] In S20, it is carried out based on the unique compression characteristics of the occluder 110.

[0123] S30. As Figure 15 shown, insert the head end of the loader 400 into the tail end of the delivery sheath 300 to connect the loader 400 and the delivery sheath 300 into one body;

[0124] S40. As Figure 16 shown, hold the delivery sheath 300 and the loader 400, and continuously push the multi-lumen tube 120 along the axial direction of the delivery sheath 300 into the heart with the hand-held wire cutting handle 200 until the first MARK point marking ring 123 of the multi-lumen tube 120 is flush with the tail end of the loader 400, and observe with ultrasound.

[0125] After completing S40, the front end of the left umbrella disc 111 is flush with the front end of the delivery sheath 300, and the multi-lumen tube 120 drives the mandrel 140 to move synchronously when moving.

[0126] S50. As Figure 17 shown, continue to push the multi-lumen tube 120 along the axial direction of the delivery sheath 300 into the heart until the second MARK point marking ring 124 is flush with the tail end of the loader 400. At this time, the left umbrella disc 111 is completely exposed in the left atrium of the heart, observe with ultrasound, and then slightly pull the forming wire 160 to make the left umbrella disc 111 closely adhere to the left atrial wall;

[0127] S60. As Figure 18 and Figure 19 shown, continue to push the multi-lumen tube 120 until the third MARK point marking ring 125 is flush with the tail end of the loader 400. At this time, the right umbrella disc 112 of the occluder 110 is completely released;

[0128] S70. As Figure 19 shown, keep the attitude of the delivery sheath 300 unchanged, and slightly pull the wire cutting handle 200 backward to drive the sheath 130 and the mandrel 140 into the delivery sheath 300. During this process, the forming wire 160 pulls the forming knot 1131 into the central hole of the hollow heat-melt tail end 115 to form the first-stage adjustment; or the forming wire 160 pulls the forming knot 1131 outside the hollow heat-melt tail end 115 to form the second-stage adjustment;

[0129] S80. As Figure 20As shown, while keeping the posture of the delivery sheath 300 unchanged, press and push the wire cutting push button 255 backward. The wire cutting push button 255 moves backward and drives the cutting tube 150 to move backward through the mandrel slider 240 and the mandrel 140, so that the cutting tube 150 moves backward relative to the sheath 130. Further, the second slot 151 is misaligned relative to the first slot 133. At the same time, the forming wire 160 and the tensioning wire 170 are cut by using the cutting edge 152, so that the forming wire 160 and the tensioning wire 170 are cut into two sections, and further, the occluder 110 is disconnected from the wire cutting handle 200.

[0130] S90. As Figure 21 and 22 shown, press the wire locking button 253 downward. The two wire locking buttons 253 move relative to each other and drive the wire locking slider 252 to move backward through the cooperation of the corresponding second inclined surface 2531 and the corresponding first inclined surface 2522 until it abuts against the stop boss 2512 and stops. At this time, the wire locking spring 254 is compressed, the front end of the upper wire locking slider is disengaged from the inner wall of the first wire hole 232, and the front end of the lower wire locking slider is disengaged from the inner wall of the second wire hole 233, so that the forming wire 160 and the tensioning wire 170 are unlocked. At this time, the forming wire 160 and the tensioning wire 170 can be smoothly withdrawn.

[0131] S100. First, withdraw the multi-lumen tube 120 and the core tube (mandrel 140) from the delivery sheath 300 and the loader 400, and then withdraw the delivery sheath 300.

[0132] The occluder delivery and forming device of the present invention has the following technical effects:

[0133] 1. The wire cutting handle 200 and the occluder pushing mechanism 100 are pre-assembled into one body, which improves the convenience, safety and wire cutting success rate of the surgical operation, ensures the smooth completion of the surgical process. At the same time, the wire cutting handle 200 and the occluder 110 are connected by the forming wire 160 and the tensioning wire 170, which simplifies the whole structure, thereby reducing the operation steps and potential risks during the surgical process.

[0134] 2. Through the wire cutting handle 200, the pre-tightening of the left umbrella disc 111, the forming of the occluder 110 and the function of pushing button wire cutting can be completed. This process can be completed by only one surgeon. This design helps to shorten the surgical time, reduce the radiation dose received by the surgeon and the patient, and improve the accuracy and safety of the surgery.

[0135] 3. The integrated design reduces the learning cost of the operator and ensures that the whole surgical process of the operator is smoother. Especially during the wire cutting process, the doctor only needs to push the wire cutting push button 255 to complete it, which is efficient and safe.

[0136] Above, the technical solution of the present invention has been introduced in detail in combination with specific embodiments, and the described specific embodiments are used to help understand the idea of the present invention. The derivations and deformations made by those skilled in the art based on the specific embodiments of the present invention also fall within the protection scope of the present invention.

Claims

1. A thread cutting handle (200), characterized in that, Comprising: A housing (210) having a front-end hole (2111), side-wall holes (215), upper-wall holes (2131), lower-wall holes (2141), upper-wire holes (2132), and lower-wire holes (2142), wherein the upper-wire holes (2132) are for the formed pulling wire (160) to enter and exit the housing (210), and the lower-wire holes (2142) are for the tension wire (170) to enter and exit the housing (210); A multi-cavity tube fixing ring (220) coaxially disposed with the front-end hole (2111) and fixed to the front part of the inner cavity of the housing for fixing the multi-cavity tube (120) extending into the inner cavity of the housing from the front-end hole (2111); A wire lead (230) fixed to the inner cavity of the housing and located behind the multi-cavity tube fixing ring (220). The wire lead (230) includes an inlet hole (231), a first wire hole (232), and a second wire hole (233). The inlet hole (231) is coaxial with the front-end hole (2111), and the inlet hole (231), the first wire hole (232), and the second wire hole (233) form a herringbone structure; A mandrel slider (240) disposed in the inner cavity of the housing in a manner that it can move back and forth along the center line of the front-end hole (2111) and located behind the wire lead (230) for connecting with the end of the mandrel (140) extending into the inner cavity of the housing from the front-end hole (2111); A wire locking assembly (250) including an upper wire locking assembly and a lower wire locking assembly. The upper wire locking assembly penetrates through the upper-wall hole (2131) for locking and unlocking the formed pulling wire (160) passing through the first wire hole (232), and the lower wire locking assembly penetrates through the lower-wall hole (2141) for locking and unlocking the tension wire (170) passing through the second wire hole (233); And a wire cutting assembly that slidably penetrates through the side-wall hole (215) and is connected to the mandrel slider (240) for driving the mandrel slider (240) to move back and forth relative to the multi-cavity tube (120).

2. The wire cutting handle according to claim 1, characterized in that, The multi-cavity tube fixing ring (220) includes an annular body (221) and two clamping protrusions (222) symmetrically fixed to the outer wall of the middle part of the annular body (221) along the center axis of the annular body (221). A clamping groove (223) is formed between the two clamping protrusions (222). The inner cavity of the housing is provided with a first installation groove for defining the multi-cavity tube fixing ring (220) and an anti-rotation clamping strip (2143) that is snapped into the clamping groove (223). The central hole of the annular body (221) is for fixing the end of the multi-cavity tube (120) extending into the inner cavity of the housing from the front-end hole (2111).

3. A wire cutting handle according to claim 1, characterized in that, At least one convex ring (234) is respectively fixed to the upper side and the lower side of the front end of the wire lead (230). The inner cavity of the housing is provided with a second installation groove for placing the wire lead (230) and a fixing clamping strip (2144) that is snapped into each convex ring (234).

4. A wire cutting handle according to claim 1, characterized in that, The upper wire locking assembly includes: Fixing base (251), a strip-shaped groove (2511) is provided at the upper part of the fixing base (251), and a stop boss (2512) is provided at the rear end of the strip-shaped groove (2511); Thread-locking slider (252), the thread-locking slider (252) is slidably arranged in the strip-shaped groove (2511), a first through hole (2521) is provided in the middle of the thread-locking slider (252) in the up-down direction, and the inner wall at the rear side of the first through hole (2521) is a first inclined surface (2522); Thread-locking button (253), the thread-locking button (253) has a second inclined surface (2531) that slidably cooperates with the first inclined surface (2522); And a thread-locking spring (254), the front end of the thread-locking spring (254) abuts against the rear end of the thread-locking slider (252), and the rear end abuts against the inner cavity of the housing (210); Under normal conditions, under the pushing action of the thread-locking spring (254), the front end of the thread-locking slider (252) abuts against the inner wall of the first wire hole (232) and clamps the formed wire (160) here; when wire extraction is required, press down the thread-locking button (253), the thread-locking button (253) moves downward and drives the thread-locking slider (252) to move backward through the cooperation of the second inclined surface (2531) and the first inclined surface (2522) until it abuts against the stop boss (2512) and stops. At this time, the thread-locking spring (254) is compressed, and the front end of the thread-locking slider (252) disengages from the inner wall of the first wire hole (232), unlocking the formed wire (160).

5. The wire cutting handle according to claim 4, characterized in that, The rear sides of the first wire hole (232) and the second wire hole (233) are both open structures. The left and right side walls of the first wire hole (232) are provided with first guide grooves (234) for the front part of the thread-locking slider (252) of the upper thread-locking assembly to slide back and forth, and the left and right side walls of the second wire hole (233) are provided with first guide grooves (234) for the front part of the thread-locking slider (252) of the lower thread-locking assembly to slide back and forth.

6. The wire cutting handle according to claim 5, wherein, The front part of the upper thread-locking assembly and the thread-locking slider (252) of the upper thread-locking assembly are provided with guide parts (2523) that cooperate with the corresponding first guide grooves (234), and the width of the guide parts (2523) is smaller than the width of the thread-locking slider (252).

7. A wire cutting handle according to claim 6, characterized in that, Moving matching parts (241) are symmetrically fixed to the upper and lower ends of the mandrel slider (240). The lower end of the fixing base (251) of the upper thread-locking assembly is provided with a clamping plate guide rail (2513) that slidably cooperates with the upper moving matching part (241) of the mandrel slider (240) with damping, and the lower end of the fixing base (251) of the lower thread-locking assembly is provided with a clamping plate guide rail (2513) that slidably cooperates with the lower moving matching part (241) of the mandrel slider (240) with damping.

8. A wire cutting handle according to claim 7, characterized in that, The wire cutting assembly includes a wire cutting push button (255), a pressing spring (256), and a first connecting portion (242). The first connecting portion (242) is fixedly provided on the side wall of the mandrel slider (240) corresponding to the side wall hole (215). The side wall hole (215) is in a strip structure along the front-back direction of the outer shell (210). The wire cutting push button (255) includes a pushing and pulling portion (2551) located outside the outer shell (210), a moving portion (2552) slidably engaged with the side wall hole (215), and a second connecting portion (2553) located inside the outer shell (210). The pushing and pulling portion (2551), the moving portion (2552), and the second connecting portion (2553) are integrally connected. One end of the pressing spring (256) abuts inside the first connecting portion (242), and the other end abuts inside the second connecting portion (2553). Under normal conditions, the pressing spring (256) is in a natural state. The portion of the moving portion (2552) close to the second connecting portion (2553) cooperates with the inner wall of the side wall hole (215). The middle section of the pressing spring (256) is exposed between the first connecting portion (242) and the second connecting portion (2553). The wire cutting push button (255) is locked in the front-back direction of the side wall hole (215). When cutting the wire, pressing the wire cutting push button (255) makes the pressing spring (256) in a compressed state. The portion of the moving portion (2552) close to the pushing and pulling portion (2551) cooperates with the inner wall of the side wall hole (215). The middle section of the pressing spring (256) is compressed into the first connecting portion (242) and the second connecting portion (2553). The wire cutting push button (255) is unlocked in the front-back direction of the side wall hole (215).

9. The wire cutting handle according to claim 8, wherein Both the first connecting portion (242) and the second connecting portion (2553) are in a cylindrical structure. When pressing the wire cutting push button (255) to make the pressing spring (256) in a compressed state, the end of the first connecting portion (242) close to the wire cutting push button (255) extends into the second connecting portion (2553).

10. A delivery and shaping device for an occluder, comprising a wire cutting handle (200) according to any one of claims 1 to 9, characterized in that, It further includes a plug pusher mechanism (100), and the plug pusher mechanism (100) includes: A plug (110), and the plug (110) includes a forming knot (1131). A multi-lumen tube (120), the multi-lumen tube (120) has a central channel (121) and at least one side channel (122) concentric with the central channel (121). A sheath (130) is fixedly sleeved at the proximal end of the central channel (121), and a first slot hole (133) is provided on the side wall of the sheath (130). A mandrel (140) passes through the central channel (121) in a manner of being able to move back and forth and stop rotating. A wire cutting tube (150) located inside the sheath (130) is fixedly provided at the proximal end of the mandrel (140). A second slot hole (151) is provided at the proximal end of the wire cutting tube (150). The distal end of the mandrel (140) is fixedly provided in the central hole of the mandrel slider (240). The formed wire (160), one end of the formed wire (160) enters from the upper wire hole (2132), passes through the first wire hole (232), the side channel (122), passes through the formed knot (1131), the second slot hole (151), the first slot hole (133), the side channel (122), the first wire hole (232), and then is led out from the upper wire hole (2132); And the tensioning wire (170), one end of the tensioning wire (170) enters from the lower wire hole (2142), passes through the second wire hole (233), the side channel (122), winds around the plugging device (110), the second slot hole (151), the first slot hole (133), the side channel (122), the second wire hole (233), and then is led out from the lower wire hole (2142); Wherein, at least one edge of the first slot hole (133) and the second slot hole (151) is provided with a cutting edge (152), and the mandrel (140) moves axially relative to the multi-cavity tube (120) along the central channel (121) to make the second slot hole (151) misaligned with the first slot hole (133), thereby cutting the formed wire (160) and the tensioning wire (170) through the cutting edge (152).

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