An electrically controlled atrial shunt delivery system

Abstract

The application discloses an electric control based atrial shunt delivery system, which comprises a delivery structure, a control structure for controlling axial movement of the delivery structure, and an electric control structure for controlling movement of the control structure; the delivery structure comprises a delivery sheath and a push rod passing through the delivery sheath; the control structure comprises a control part and a transmission part connected with each other; the transmission part is connected with the push rod at a distal end, and the control part is connected with the electric control structure at a proximal end; the electric control structure drives the control part to move, and then the control part drives the push rod to move along a channel formed by the delivery sheath through the transmission part. The application integrates the functions of loading, delivery and release of a conventional atrial shunt delivery device on one handle, reduces the complexity of the device, is easy to operate, and improves the acceptance speed of the device by doctors. Finally, the control structure is divided into a precise control part and a rapid control part, so that the requirements of refinement and saving of operation time in actual operation can be flexibly met.

Description

Technical Field

[0001] This invention relates to the technical field of medical devices, and more particularly to an electronically controlled atrial shunt delivery system. Background Technology

[0002] Heart failure (HF) is a syndrome caused by impaired systolic and / or diastolic function of the heart, which fails to adequately pump venous blood back to the heart, leading to blood pooling in the venous system and insufficient blood perfusion in the arterial system. This syndrome is characterized by pulmonary congestion and vena cava congestion.

[0003] According to the location of heart failure, it can be divided into: (1) left heart failure: refers to heart failure caused by the inability of the left ventricle to compensate. It is relatively common in clinical practice and is characterized by pulmonary congestion; (2) right heart failure: simple right heart failure is mainly seen in pulmonary heart disease and some congenital heart diseases, and is characterized by systemic congestion; (3) total heart failure: after left heart failure, the pulmonary artery pressure increases, which increases the load on the right heart. After a long time, right heart failure will also appear, which is total heart failure.

[0004] For chronic heart failure caused by persistent high pressure in the left atrium, one of the existing technical solutions is to implant a shunt device in the interatrial septum between the left and right atria to redistribute the pressure between the left and right atria and reduce the pressure imbalance between the two atria.

[0005] The common method for implanting atrial shunt devices involves first compressing the shunt onto a loader, then using a delivery system to transport the shunt to a pre-designated location in the atrial septum for positioning. The delivery system is then withdrawn to release the shunt until it is fully released. However, currently available delivery systems specifically designed for atrial shunts are overly complex, placing a significant financial burden on patients and their families. Therefore, it is necessary to develop a feature-rich, easy-to-operate, and time-saving implantable atrial shunt device to benefit a wider range of patients and their families. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing an electronically controlled atrial shunt delivery system.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An electronically controlled atrial shunt delivery system includes a delivery structure, a control structure for controlling the axial movement of the delivery structure, and an electronically controlled structure for controlling the movement of the control structure. The delivery structure includes a delivery sheath and a push rod passing through the delivery sheath. The control structure includes a control unit and a conduction unit connected to each other. The distal end of the conduction unit is connected to the push rod, and the proximal end of the control unit is connected to the electronically controlled structure. The electronically controlled structure drives the control unit to move, which in turn drives the push rod to move along the channel formed by the delivery sheath through the conduction unit.

[0009] Furthermore, the control unit includes a first screw, a first threaded cylinder threadedly connected to the first screw, and a first gear fixedly connected to the first screw; the distal end of the first threaded cylinder is connected to the transmission unit, and the first threaded cylinder moves axially along the first threaded cylinder under the drive of the first screw, so that the transmission unit drives the push rod to move.

[0010] Furthermore, the control unit includes a second screw, a second threaded cylinder threadedly connected to the second screw, and a second gear fixedly connected to the second screw; the distal end of the second threaded cylinder is connected to the transmission unit, and the second threaded cylinder moves axially along the second threaded cylinder under the drive of the second screw, so that the transmission unit drives the push rod to move.

[0011] Furthermore, the first screw is a hollow structure with openings at both ends, and the far end of the first screw is sleeved on the second screw; the pitch of the second screw is smaller than the pitch of the first screw.

[0012] Furthermore, the electronic control structure includes a first control motor, a second control motor, a battery, and a control circuit; the first control motor is connected to a first control gear, the second control motor is connected to a second control gear, the battery is connected to the first control motor, the second control motor, and the control circuit, and the control circuit is connected to the first control motor and the second control motor.

[0013] Furthermore, an annular boss is provided on the outer peripheral surface of the second screw near its proximal end, and a first groove adapted to the annular boss is provided in the first gear, so that the annular boss of the second screw is disposed in the first groove.

[0014] Furthermore, the conveying structure also includes a housing, with the proximal end of the conveying sheath inserted into the distal end of the housing, and a snap-fit ​​block provided at the proximal end of the housing; the outer periphery of the first gear is provided with a second groove that matches the snap-fit ​​block, so that the snap-fit ​​block snaps into the second groove.

[0015] Furthermore, the conductive part includes a push rod connector, a first threaded cylinder connector, and a first connecting rod, with the distal end of the first connecting rod connected to the push rod connector and the proximal end of the first connecting rod connected to the first threaded cylinder connector.

[0016] Furthermore, the conductive part also includes a second threaded cylinder connector and a second connecting rod, the distal end of the second connecting rod being connected to the first threaded cylinder connector, and the proximal end of the second connecting rod being connected to the second threaded cylinder connector.

[0017] Furthermore, a guide is provided on the outer circumferential surface of the push rod connector, and a first guide groove adapted to the guide is provided on the side of the housing near the far end, so that the first threaded cylinder and / or the second threaded cylinder can move without rotation along the first guide groove under the guidance of the guide.

[0018] Furthermore, the distal end of the housing is provided with a second guide groove adapted to the guide member, so that the guide member can move circumferentially along the second guide groove.

[0019] Furthermore, the conveying structure also includes a venting section, which includes a silicone valve, a venting tail, a venting head, a venting pipe, and a three-way stopcock. The venting tail and the venting head are fixedly connected to the proximal end, and the venting head is fixedly connected to the distal end of the handle head. The silicone valve is located inside the venting section. A through hole is provided on one side of the venting head and the handle head for one end of the venting pipe to pass through, so that one end of the venting pipe is installed in the through hole, and the other end of the venting pipe is connected to the three-way stopcock.

[0020] Furthermore, the distal end of the delivery sheath has a frustum, the diameter of which is smaller than the diameter of the proximal end.

[0021] Compared with existing technologies, the atrial shunt delivery device provided by this invention first loads the atrial shunt into the distal end of the delivery structure through the linkage between the control structure and the loading structure. The distal end of the delivery structure passes sequentially through the right femoral vein and the inferior vena cava, enters the right atrium, and reaches the left atrium through the dilatation of the interatrial septum. The control electrical control structure causes the actuation control structure to first release the left disc of the atrial shunt, partially retract the delivery device, release the right disc of the atrial shunt, and then release the atrial shunt, withdrawing the delivery device from the body.

[0022] The atrial shunt delivery device provided by this invention integrates the loading, delivery, and release functions of traditional atrial shunt delivery devices into a single handle, reducing the complexity of the device, simplifying operation, and increasing the speed at which doctors accept the device. Finally, this invention divides the control structure into a precision control unit and a rapid control unit, flexibly meeting the requirements of precision and time-saving operation in practical situations. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of a delivery system for an atrial shunt provided in Embodiment 1;

[0024] Figure 2 This is a schematic diagram of the loading structure provided in Embodiment 1;

[0025] Figure 3 This is a schematic diagram of the conveying sheath and the venting section of the conveying structure provided in Embodiment 1;

[0026] Figure 4 This is a schematic diagram of the delivery sheath provided in Embodiment 1;

[0027] Figure 5 This is a schematic diagram of the venting section provided in Embodiment 1;

[0028] Figure 6 This is a cross-sectional view of the venting section AA provided in Embodiment 1;

[0029] Figure 7 This is a schematic diagram of the venting section of the conveying structure provided in Embodiment 1;

[0030] Figure 8 This is a schematic diagram of the venting head provided in Embodiment 1;

[0031] Figure 9 This is a cross-sectional view of the conveying system provided in Embodiment 1;

[0032] Figure 10 This is a schematic diagram of the first control component provided in Embodiment 1;

[0033] Figure 11 This is a schematic diagram of the second control component provided in Embodiment 1;

[0034] Figure 12 This is a schematic diagram of the conductive part provided in Embodiment 1;

[0035] Figure 13 This is a schematic diagram of the conductive part provided in Embodiment 1;

[0036] Figure 14 This is a schematic diagram of the push rod driving the connector to push the atrial shunt and completely pass through the interatrial septum, as provided in Embodiment 1;

[0037] Figure 15 This is a schematic diagram of the push rod driving the connector to pull back part of the atrial shunt provided in Embodiment 1;

[0038] Figure 16 This is a schematic diagram showing the separation of the connector from the atrial shunt provided in Embodiment 1;

[0039] Figure 17 This is the circuit schematic diagram of the electronic control structure provided in Embodiment 1;

[0040] Figure 18 This is a schematic diagram of the conductive part provided in Embodiment 3;

[0041] Among them, 1. Loading structure; 11. Connector; 12. Push rod; 13. Release handle; 2. Conveying structure; 21. Conveying sheath; 211. Frustum; 212. Sheath connector; 22. Conveying handle; 221. Handle head; 222. Housing; 2221. First guide groove; 2222. Second guide groove; 223. Stress protection tube; 224. Clip block; 23. Drainage section; 231. Silicone valve; 232. Drainage tail section; 233. Drainage head section; 234. Drainage pipe; 235. Three-way stopcock; 3. Control structure; 31. Control section; 32. Conducting section; 311. First gear; 312. First screw; 313. First threaded cylinder; 315. Second annular groove; 316. First annular groove; 321. Second gear; 322. Second screw; 3221. Annular boss; 323. Second threaded cylinder; 331. Push rod connector; 332. First threaded cylinder connector; 333. First connecting rod; 334. Second threaded cylinder connector; 335. Second connecting rod; 336. Guide component; 4. Electrical control structure; 41. First control motor; 42. Second control motor; 43. Battery; 44. Control circuit board; 5. Atrial septum; 6. Atrial shunt. Detailed Implementation

[0042] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0043] The purpose of this invention is to address the shortcomings of existing technologies by providing an electronically controlled atrial shunt delivery system.

[0044] An embodiment of the electronically controlled atrial shunt delivery system provided by the present invention is as follows: Figure 1-17 As shown, the structure includes a loading structure 1, a conveying structure 2, a control structure 3, and an electrical control structure 4. The loading structure 1 includes a connector 11 and a push rod 12. The conveying structure 2 includes a conveying sheath 21, a conveying handle 22, and a venting section 23. The control structure 3 includes a control section 31 and a transmission section 32. The distal end of the transmission section 32 is connected to the push rod 12. Rotating the control section 31 drives the transmission section 32 to move. The proximal end of the control section 31 is connected to the electrical control structure 4. The electrical control structure 4 drives the control section 31 to move, which in turn causes the control section 31 to drive the push rod 12 to move along the channel formed by the conveying sheath 21 through the transmission section 32.

[0045] like Figure 2-3As shown, the loading structure 1 includes a connector 11 and a pusher 12. The proximal end of the connector 11 is connected to the distal end of the pusher 12. The distal end of the connector 11 is detachably connected to the atrial shunt 6, such as by threaded connection, snap-fit ​​connection, or loop connection, but not limited to these methods. The pusher 12 is a rod-shaped structure, and its cross-section is not limited to regular or irregular shapes such as circles or polygons. The pusher 12 passes through the delivery structure 2 and simultaneously drives the atrial shunt 6 to move within the delivery structure 2 until the atrial shunt 6 is completely contained within the distal end of the delivery sheath 21, thus completing the loading of the atrial shunt 6.

[0046] The connecting component 11 is made of one or more of the following materials: polymer composite material, stainless steel, and metal alloy. The pushing component 12 is a strip of metal wire with a braided structure, and is made of one or more of the following metal materials with high flexibility and toughness: stainless steel, nickel-titanium alloy, etc. The function of the pushing component 12 is to load and push the atrial shunt 6 through the delivery sheath 21 into the interatrial septum 5, and to allow it to rotate smoothly in the opposite direction, separate from the atrial shunt 6, and then withdraw the pushing component 12 out of the patient's body.

[0047] Figure 14 The pusher 12 drives the connector 11 to push the atrial shunt 6 through the interatrial septum 5 completely; Figure 15 The pusher 12 drives the connector 11 to pull back part of the atrial shunt 6, so that the atrial shunt 6 is clamped on the interatrial septum 5; Figure 16 After delivering the atrial shunt 6 to the target location of the interatrial septum 5, the connector 11 is separated from the atrial shunt 6.

[0048] like Figure 3-9 As shown, the conveying structure 2 includes a conveying sheath 21, a conveying handle 22, and a venting section 23.

[0049] The delivery sheath 21 is a hollow cylindrical structure with openings at both ends. The distal end of the delivery sheath 21 has a frustum 211, and the lower part of the proximal end of the frustum 221 has a curved portion, so that the angle between the central axis of the frustum 221 and the straight line containing the central axis of the proximal end of the delivery sheath 21 is 15-90 degrees, preferably 25-80°, and more preferably 30-70°.

[0050] The purpose of setting the truncated cone in this embodiment is to adapt to the direction of the blood vessels, to reach the patient's right atrium more smoothly, and to reduce the resistance to advancement when entering the body.

[0051] The delivery sheath 21 is made of polymer materials and / or springs, wherein the polymer materials are one or more of PTFE, HDPE, LDPE, and Pebax; the length of the delivery sheath is L, which is approximately 600mm-1200mm.

[0052] The delivery sheath 21 has high rigidity, and the distal end will not deform when the atrial shunt is loaded. Such deformation would increase the resistance of the delivery sheath 21 to entering the human body and even damage the blood vessel wall.

[0053] The near end of the delivery sheath 21 is also provided with a sheath connector 212, which is connected to the delivery handle 22.

[0054] The conveying handle 22 includes a handle head 221 and a housing 222. The handle head 221 is shaped like a hollow cone with a semi-cylindrical shape added to the bottom of the cone. The housing 222 is shaped like a hollow cylinder.

[0055] The handle head 221 has openings at both the top and bottom. The opening at the far end of the handle head 221 is adapted to the diameter of the delivery sheath 21. The opening at the near end of the handle head 221 is adapted to the diameter of the housing 222, so that the delivery sheath 21, the handle head 221, and the housing 222 are connected.

[0056] The handle head 221 is fitted onto the proximal end of the delivery sheath 21 through an opening. Preferably, a stress protection tube 223 is also provided at the junction of the handle head 221 and the delivery sheath 21. The stress protection tube 223 is fitted onto the proximal end of the delivery sheath 21, and the handle head 221 is fitted onto the stress protection tube 223. The stress protection tube 223 is used to increase the connection strength between the handle head 221 and the delivery sheath 21. The stress protection tube 223 is made of nylon 66, but can also be one or more other polymer materials. In this embodiment, the delivery sheath 21, stress protection tube 223, and handle head 221 are fixedly connected or integrally formed by means of adhesive, hot melting, etc.

[0057] The housing 222 has a hollow structure, including an upper housing and a lower housing. The distal end of the lower housing is connected to the semi-cylindrical bottom of the handle head 221. The upper housing and the lower housing are connected by snap-fit, thread, or other means. A first guide groove 2221 is provided at the distal end of the side where the upper housing and the lower housing are connected. The length of the first guide groove 2221 is slightly greater than the length of the atrial shunt ballast in the delivery sheath 21. The distal end of the upper housing is not connected to the conical bottom of the handle head 221, and a radial second guide groove 2222 is provided near the distal end of the upper housing. A snap-fit ​​block 224 is provided at the tail of the housing 222.

[0058] The venting section 23 includes a silicone valve 231, a venting tail section 232, a venting head 233, a venting pipe 234, and a three-way stopcock 235. The venting head 233, the venting tail section 232, and the silicone valve 231 are located inside the handle head 221. The three-way stopcock 235 is connected to the venting head through the venting pipe and is located outside the handle head 221.

[0059] The drain head 233 is hollow funnel-shaped. A stepped hole 2333 is located on the inner side of the proximal end of the drain head 233. The thickness of the silicone valve 231 is not less than the height of the stepped hole 2333 to seal the space between the drain head 233 and the drain tail 232. An opening matching the distal opening of the handle head 221 is provided at the distal end of the drain head 233. An opening is also provided at the proximal end of the drain head 233 to allow communication between the drain head 223 and the handle head 221. The handle head 221 and the drain head 233 are fixedly connected by threaded connection, snap-fit ​​connection, or loop fastening. The drain tail 232 is located at the proximal end of the drain head and is fixedly connected to the drain head 233 by threaded connection, snap-fit ​​connection, or loop fastening.

[0060] The silicone valve 231 is housed inside the venting section 23, preferably positioned between the venting tail and the venting head. A small hole, compatible with the push rod 12, is provided at a corresponding position between the venting tail 232 and the silicone valve 231, facilitating the passage of the push rod 12. An opening, compatible with one end of the venting pipe 234, is provided on one side of the venting head 233 corresponding to the handle head 221, allowing one end of the venting pipe 234 to be inserted into the opening. The other end of the venting pipe 234 is connected to the three-way stopcock 235. In this embodiment, the function of the venting section 23 is to vent internal air.

[0061] External threads are provided on the outer sides of both the distal and proximal ends of the venting head 233 so that the sheath connector 212 is threadedly connected to the distal end of the venting head 233, and the venting tail 232 is threadedly connected to the proximal end of the venting head 233.

[0062] like Figure 9-16 As shown, the control structure 3 includes a control unit 31 and a transmission unit 32, with the control unit 31 and the transmission unit 32 connected together.

[0063] The control unit 31 includes a first control element and a second control element.

[0064] The first control component includes a first gear 311, a first screw 312, and a first threaded cylinder 313. The first gear 311 is disposed on the proximal exterior of the housing 222 and is fixedly connected to the proximal end of the first screw 312. The first screw 312 and the first threaded cylinder 313 are rotatably connected by a thread, and the distal end of the first threaded cylinder 313 is connected to the transmission part 32. The outer side of the first screw 312 is provided with a thread, and the first screw 312 has a hollow structure with open ends. The first threaded cylinder 313 is hollow inside, and a nut adapted to the first screw 312 is provided inside the first threaded cylinder 313. The first threaded cylinder 313 moves axially under the action of the rotation of the first thread 312, so that the transmission part 32 drives the push rod 12 to move.

[0065] The second control component includes a second gear 321, a second screw 322, and a second threaded cylinder 323. The second gear 321 is located on the proximal side of the housing 222, specifically on the proximal side of the first gear 311. The second gear 321 is fixedly connected to the proximal end of the second screw 322. The second screw 322 and the second threaded cylinder 323 are rotatably connected by a thread. The distal end of the second threaded cylinder 323 is connected to the transmission part 32. The outer side of the second screw 322 is provided with a thread. The second threaded cylinder 323 is provided with a nut that is compatible with the second screw 322. The second threaded cylinder 323 moves axially under the action of the second thread rotation, so that the transmission part 32 drives the push rod 12 to move.

[0066] The second screw 322 has a hollow structure. The first screw 312 is sleeved on the second screw 322 so that the second screw 322 passes through the first screw 312, and the second threaded cylinder 323 also passes through the far end of the first screw 312.

[0067] The second control component is nested within the first control component, that is, from the inside out, it consists of the second screw 322, the second threaded cylinder 323, the first screw 312, and the first threaded cylinder 313.

[0068] The pitch of the second screw 322 is smaller than the pitch of the first screw 312, so that the second control member can precisely and accurately adjust the push member 12, and the first control member can quickly and coarsely (over a wide range) adjust the push member 12.

[0069] An annular boss 3221 is provided near the end of the second screw 322, close to the position where it connects with the second gear 321. A first annular groove 316 is provided on the inner side of the first gear 311 to match the annular boss 3221, so that the annular boss 3221 is disposed in the first annular groove 316, but not stuck, that is, the first gear 311 will not drive the second screw 322 to rotate when it rotates. The function of the annular boss 3221 in this embodiment is to enable the second screw 322 to rotate in the radial direction and restrict the movement of the second screw 322 in the axial direction.

[0070] A second annular groove 315 is provided on the outer peripheral surface of the first gear 311 to match the locking block 224 of the housing 222, so that the locking block 22 is disposed in the second annular groove 315. The cooperation between the second annular groove 315 and the locking block 22 facilitates the rotational movement of the first knob 311 in the radial direction and restricts the movement of the first gear 311 in the axial direction.

[0071] The transmission part 32 includes a push rod connector 331, a first threaded cylinder connector 332, and a first connecting rod 333. The push rod connector 331 has a through hole for clamping the push rod 12, allowing the push rod 12 to pass through the push rod connector 331. The proximal end of the push rod connector 331 is connected to the distal end of the first connecting rod 333, and the proximal end of the first connecting rod 333 is connected to the proximal end of the first threaded cylinder connector 332. The connection can be achieved through threaded connections, snap-fit ​​mechanisms, or other similar methods. Figure 13 As shown, the proximal end of the first connecting rod 333 is threadedly connected to the first threaded cylinder connector 332 via a threaded head end 337; the first threaded cylinder connector 332 is located within the first threaded cylinder 313 near its distal end; the distal end of the first threaded cylinder 313 has an opening, and the diameter of the opening is larger than the diameter of the first connecting rod 333, but smaller than the diameters of the push rod connector 331 and the first threaded cylinder connector 332; the distal end of the first threaded cylinder 313 is fitted onto the outer circumferential surface of the first connecting rod 333, which can drive the push rod connector 331 and the first threaded cylinder connector 333 to move axially.

[0072] The transmission part 32 also includes a second threaded cylinder connector 334 and a second connecting rod 335. The distal end of the second connecting rod 335 is connected to the proximal end of the first threaded cylinder 313, and the proximal end of the second connecting rod 335 is connected to the distal end of the second threaded cylinder connector 334. The connection can be made by means of threads, snaps, etc. The distal end of the second threaded cylinder 323 has an opening, and the diameter of the opening is larger than the diameter of the second connecting rod 335 and smaller than the diameter of the second threaded cylinder connector 334. The diameter of the second threaded cylinder connector 334 is smaller than the diameter of the first threaded cylinder connector 332. The distal end of the second threaded cylinder 323 is fitted on the outer circumferential surface of the second connecting rod 335, which can drive the push rod connector 331 and the second threaded cylinder connector 334 to move axially.

[0073] In this embodiment, the travel distance of the first control member is the length of the second connecting rod 335, and the travel distance of the second control member is the length of the first connecting rod 333.

[0074] The outer peripheral surface of the push rod connector 331 is also provided with a guide 336, and the housing 222 is provided with a first guide groove 2221. The first threaded cylinder 313 and / or the second threaded cylinder 323 move without rotating along the first guide groove 2221 under the guidance of the guide 336.

[0075] The distal end of the housing 222 is also provided with a second guide groove 2222, and the guide member 336 can move circumferentially along the second guide groove 336 to disengage the distal end of the push rod 21 from the atrial shunt.

[0076] The electronic control structure 4 is located at the near end of the housing and is connected to the control unit 31. The electronic control structure 4 is used to make the control unit 31 drive the transmission unit 32 to move, thereby making the pusher 12 move.

[0077] The electronic control structure 4 includes a first control motor 41, a second control motor 42, a battery 43, and a control circuit. The first control motor 41 is connected to the first gear 311, the second control motor 42 is connected to the second gear 322, the battery 43 is connected to the first control motor 41, the second control motor 42, and the control circuit, and the control circuit is connected to the first control motor 41 and the second control motor 42.

[0078] The control circuit includes a power switch, control buttons, and a control circuit board 44; Figure 17 The circuit diagram for the electronic control structure 4 includes a power supply, a switch, two diodes, two motors, and four push-button switches.

[0079] The following is a method of using an electronically controlled atrial shunt delivery system according to this embodiment:

[0080] First, connect the atrial shunt 6 to the connector 11 externally. Start the second control motor 42 or the first control motor 41 of the electronic control structure 6. The second control motor 42 drives the second gear 322 to rotate, or the first control motor 41 drives the first gear 311 to rotate. Load the atrial shunt 6 onto the distal end of the delivery sheath 21. Pass the pre-compressed atrial shunt 6 and the delivery device through the femoral vein and superior vena cava to the right atrium, through the interatrial septum, and into the left atrium. Stop pushing the delivery device.

[0081] After adjusting the distal position of the delivery device, the second gear 322 or the first gear 311 rotates, advancing the control system halfway to release the left disc of the atrial shunt. Continuing to advance the control system fully releases the right disc of the atrial shunt 6. The release part 323 is then rotated radially to release the atrial shunt 6, retracting the delivery device and removing the delivery structure 2 from the patient's body. The atrial shunt 6 is then fully released and fixed to the atrial septum located between the left and right atria. During the procedure, the atrial shunt can be released quickly or slowly depending on the patient's condition and the surgeon's skill level.

[0082] The atrial shunt is delivered to the interatrial septum by the delivery device provided in this embodiment. The atrial shunt then redistributes the interatrial pressure and reduces the interatrial pressure between the left and right atria. The device is first roughly controlled by a second control element and then precisely controlled by a first control element, so that the atrial shunt can stably reach the target position.

[0083] In other embodiments

[0084] The delivery device is also equipped with a shunt catcher, which can be used to help recover the replaced atrial shunt 4. The catcher uses a clamping method to catch and fix the atrial shunt 6.

[0085] In other embodiments

[0086] like Figure 18 As shown, in this embodiment, the guide can be replaced with a rotatably connected pin to fix it relative to the push rod or to allow the push rod to slide freely. The pin structure controls the clamping component and thus the push rod, eliminating the design of the second control component and adopting a manually controlled pin structure.

[0087] In other embodiments

[0088] The delivery handle is also equipped with markers to indicate the release status of the atrial shunt at different locations, such as not released, left disc released, right disc released, and dissociated. This method reduces unnecessary exposure to DSA radiation, allows for ultrasound operation, and protects the health and safety of doctors and patients.

[0089] The atrial shunt delivery device provided in this embodiment has rich functions and is easy to operate, which is conducive to the promotion and application of the above-mentioned delivery device in the field of medical devices.

[0090] Compared with existing technologies, the atrial shunt delivery device provided by this invention first loads the atrial shunt into the distal end of the delivery structure through the linkage between the control structure and the loading structure. The distal end of the delivery structure passes sequentially through the right femoral vein and the inferior vena cava, enters the right atrium, and reaches the left atrium through the dilatation of the interatrial septum. Rotating the control structure first releases the left disc of the atrial shunt, retracts the delivery device, releases the right disc of the atrial shunt, and then releases the atrial shunt, withdrawing the delivery device from the body.

[0091] The atrial shunt delivery device provided by this invention integrates the loading, delivery, and release functions of traditional atrial shunt delivery devices into a single handle, reducing the complexity of the device, simplifying operation, and increasing the speed at which doctors accept the device. Finally, this invention divides the control structure into a precision control unit and a rapid control unit, flexibly meeting the requirements of precision and time-saving operation in practical situations.

[0092] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An electrically controlled atrial shunt delivery system, characterized by, The control structure includes a control part and a transmission part connected with each other; the distal end of the transmission part is connected with the push rod, and the proximal end of the control part is connected with the electric control structure; the electric control structure drives the control part to move, and then the control part drives the push rod to move along the channel formed by the delivery sheath tube through the transmission part; The control part includes a first screw rod, a first threaded cylinder threadedly connected with the first screw rod, and a first gear fixedly connected with the first screw rod; the distal end of the first threaded cylinder is connected with the transmission part, and the first threaded cylinder moves axially along the first threaded cylinder under the drive of the first screw rod, so as to drive the push rod to move through the transmission part; The control part includes a second screw rod, a second threaded cylinder threadedly connected with the second screw rod, and a second gear fixedly connected with the second screw rod; the distal end of the second threaded cylinder is connected with the transmission part, and the second threaded cylinder moves axially along the second threaded cylinder under the drive of the second screw rod, so as to drive the push rod to move through the transmission part; The first screw rod is a hollow structure with open ends, and the distal end of the first screw rod is sleeved on the second screw rod; the pitch of the second screw rod is smaller than the pitch of the first screw rod; The transmission part includes a push rod connecting piece, a first threaded cylinder connecting piece, and a first connecting rod; the distal end of the first connecting rod is connected with the push rod connecting piece, and the proximal end of the first connecting rod is connected with the first threaded cylinder connecting piece; The transmission part further includes a second threaded cylinder connecting piece and a second connecting rod; the distal end of the second connecting rod is connected with the first threaded cylinder connecting piece, and the proximal end of the second connecting rod is connected with the second threaded cylinder connecting piece; A guide piece is arranged on the outer circumferential surface of the push rod connecting piece, and a first guide groove is arranged on the side of the housing close to the distal end and matched with the guide piece, so that the first threaded cylinder and / or the second threaded cylinder move without rotation along the first guide groove under the guidance of the guide piece; The delivery structure further includes a housing, and a second guide groove is arranged on the distal end of the housing and matched with the guide piece, so that the guide piece moves circumferentially along the second guide groove.

2. An electrically controlled atrial shunt delivery system according to claim 1, wherein, The electric control structure includes a first control motor, a second control motor, a battery, and a control circuit; the first control motor is connected with a first control gear, the second control motor is connected with a second control gear, the battery is connected with the first control motor, the second control motor, and the control circuit respectively, and the control circuit is connected with the first control motor and the second control motor respectively.

3. An electrically controlled atrial shunt delivery system according to claim 1, wherein, An annular boss is arranged on the outer circumferential surface of the second screw rod close to the proximal end, and a first groove matched with the annular boss is arranged in the first gear, so that the annular boss of the second screw rod is arranged in the first groove.

4. An electrically controlled atrial shunt delivery system according to claim 1, wherein, The proximal end of the delivery sheath tube is inserted into the distal end of the housing, and a clamping block is arranged on the proximal end of the housing; a second groove matched with the clamping block is arranged on the outer circumferential surface of the first gear, so that the clamping block is clamped in the second groove.

5. An electrically controlled atrial shunt delivery system according to claim 4, wherein, The delivery structure further comprises an emptying part, which comprises a silica gel valve, an emptying tail, an emptying head, an emptying tube and a three-way cock, the emptying tail is fixedly connected with the proximal end of the emptying head, the distal end of the emptying head is fixedly connected with a handle head, and the silica gel valve is arranged in the emptying part; the emptying head and one side of the handle head are both provided with a through hole through which one end of the emptying tube passes, so that the one end of the emptying tube is mounted in the through hole, and the other end of the emptying tube is connected with the three-way cock.

6. An electrically controlled atrial shunt delivery system according to claim 1, wherein, The distal end of the delivery sheath tube has a circular platform, and the diameter of the distal end of the circular platform is smaller than the diameter of the proximal end.

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