Bending-adjustable left atrial appendage occluder conveying system and using method

Abstract

The invention relates to the field of medical apparatuses and instruments, and discloses an adjustable left auricle occluder conveying system and a using method.The adjustable left auricle occluder conveying system comprises a shell, a control panel is installed on the upper surface of the shell, an outer pipe is inserted into the inner wall of the shell, a plastic pipe is fixedly connected to the inner wall of the outer pipe, and an inner pipe is fixedly connected to the inner wall of the plastic pipe; an adjusting mechanism is arranged at the position, close to the rear end, of the inner wall of the outer pipe, the adjusting mechanism comprises a rotating assembly and a bending assembly, the rotating assembly comprises a second traction rope, a fixing ring, a supporting ring, a rotating ring, a torsional spring and a sliding sleeve, the fixing ring is fixedly connected to the outer wall of the inner pipe, and the sliding sleeve slides on the outer wall of the inner pipe. According to the device, by arranging the adjusting mechanism, when an operator pulls a second pulling rope, the pulling rope can drive a rotating ring to rotate, in this way, the direction of a bending assembly can be driven to be changed, then a first pulling rope is pulled to drive a fixing ring to move, and the fixing ring can pull a third pulling rope to drive an outer pipe to tilt up.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a delivery system and a use method of an adjustable left atrial appendage occluder. Background Art

[0002] In the medical field, left atrial appendage occlusion is a relatively effective treatment to prevent left atrial appendage thromboembolism, which can reduce the risk of fatal bleeding events in patients with non-valvular atrial fibrillation who are on anticoagulant therapy or who are contraindicated for anticoagulant therapy. Left atrial appendage occlusion is a surgery to block the opening of the left atrial appendage using a left atrial appendage occluder.

[0003] During actual surgery, there is usually a gap between the actual puncture point and the ideal puncture point, which will cause a deviation between the end of the delivery device and the installation position. In addition, since the delivery device is in a bent state in the patient's body, the direction of the delivery device cannot be changed by rotating the instrument. In this case, directly delivering or releasing the left atrial appendage occluder will make it difficult to fix the fixing plate of the left atrial appendage occluder in the installation position, and the left atrial appendage occluder is easy to fall off and cause device embolism. Therefore, an adjustable left atrial appendage occluder delivery system and a method of use are proposed to solve the above problems. Summary of the invention

[0004] In order to remedy the above deficiencies, the present invention provides an adjustable left atrial appendage occluder delivery system and a method of use, aiming to improve the problem in the prior art that "there will be a deviation between the actual puncture position and the ideal puncture position when installing the left atrial appendage occluder, and direct installation will make it difficult to fix the fixing plate of the left atrial appendage occluder in the installation position."

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a delivery system of an adjustable left atrial appendage occluder and a method of use, comprising a shell, a control panel is installed on the upper surface of the shell, an outer tube is inserted into the inner wall of the shell, a plastic tube is fixedly connected to the inner wall of the outer tube, an inner wall of the plastic tube is fixedly connected to the inner tube, an adjustment mechanism is arranged on the inner wall of the outer tube near the rear end, the adjustment mechanism comprises a rotating component and a bending component, the rotating component comprises a traction rope 2, a fixed ring, a support ring, a rotating ring, a torsion spring, and a sliding sleeve, the fixed ring is fixedly connected to the outer wall of the inner tube, the sliding sleeve slides on the outer wall of the inner tube, the rotating ring is rotatably connected to the front surface of the sliding sleeve, one end of the traction rope 2 is fixedly connected to the outer wall of the rotating ring, and the middle part of the traction rope 2 is wrapped around the rotating ring. The outer wall of the ring, the front end of the traction rope 2 passes through and is inserted into the inside of the support ring, the front end of the traction rope 2 passes through and is inserted into the front surface of the fixed ring, one end of the torsion spring is fixedly connected to the outer wall of the sliding sleeve, and the other end of the torsion spring is fixedly connected to the rear surface of the rotating ring. The bending assembly includes bending tubes and the number is multiple groups. The multiple groups of bending tubes are connected to each other through spring sheets, and the lower surface of the bending tube is fixedly connected to the upper surface of the spring sheet, wherein the upper surface of the bending tube at the rearmost position is fixedly connected with traction rope 3, the front end of the traction rope 3 is fixedly connected to the outer wall of the rotating ring, and the rear surface of the rotating ring is fixedly connected with a connecting telescopic rod, and the rear surface of the connecting telescopic rod is fixedly connected to the front surface of the frontmost group of bending tubes, and the control panel controls the adjustment mechanism through the control mechanism.

[0006] As a further description of the above technical solution:

[0007] The bending component also includes a keyway, which is arranged on the outer wall of the inner tube. The inner wall of the support ring is provided with splines, which slide on the inner wall of the keyway. The splines are provided in multiple groups, and another group of splines is arranged on the inner wall of the sliding sleeve.

[0008] As a further description of the above technical solution:

[0009] A bending groove is arranged between two adjacent groups of the bending tubes, and the outer wall of the last group of the bending tubes is rotatably connected to the inner wall of the outer tube. The rear surface of the bending tubes in this group, the rear surface of the inner tube and the rear surface of the outer tube together form a closed plane.

[0010] As a further description of the above technical solution:

[0011] An opening is provided on the outer wall of the outer tube near the rear surface of the shell for allowing the traction rope 2 and the traction rope 1 to detach from the inner wall of the outer tube, and the traction rope 1 and the traction rope 2 detach from the interior of the inner tube through the opening. The control mechanism includes two groups of connecting blocks, one group of which has a rear surface fixedly connected to the front end of the traction rope 2, and the other group of which has a rear surface fixedly connected to the front end of the traction rope 1.

[0012] As a further description of the above technical solution:

[0013] The control mechanism also includes a connecting seat, any group of the connecting blocks can be plugged into the upper surface of the connecting seat, the connecting seat penetrates and is slidably connected to the upper surface of the control panel, the lower surface of the connecting seat is fixedly connected to a threaded plate, the lower surface of the control panel is installed with a motor, the rear end of the motor output shaft is fixedly connected to a threaded rod, and the threaded plate is threadedly connected to the outer wall of the threaded rod.

[0014] As a further description of the above technical solution:

[0015] An insert block is fixedly connected to the upper surface of the connection seat, a slot is provided on the lower surface of the connection block, and the connection seat and the slot are matched.

[0016] As a further description of the above technical solution:

[0017] A clamping block is fixedly connected to the upper surface of the connecting seat, a clamping slot is arranged on the lower surface of the connecting block, the clamping block and the clamping slot are matched, and an unlocking block is slidably connected to the inner wall of the clamping slot.

[0018] As a further description of the above technical solution:

[0019] The motor, threaded rod, threaded plate and connecting seat are provided in multiple groups, and the multiple groups of motors, threaded rods, threaded plates and connecting seats are symmetrically arranged with the center line of the shell as the symmetry axis. The upper surface of the control panel is installed with switches, and the number is five groups, of which four groups of switches can respectively control the forward rotation and reverse rotation of the two groups of motors, and the remaining group of switches can control the power on and off of the entire device. By adjusting the switch, a signal can be sent to the motor to control its operation.

[0020] As a further description of the above technical solution:

[0021] The front surface of the shell is fixedly connected with a clamping sleeve, the outer tube passes through and is inserted into the inner wall of the clamping sleeve, the outer wall of the clamping sleeve is threadedly connected with a threaded sleeve, the rear surface of the shell is fixedly connected with a limiting block, the outer wall of the outer tube is fixedly connected with a limiting ring, the upper surface of the control panel is fixedly connected with a fixing sleeve in multiple groups, the upper surface of the control panel is provided with indicating marks in multiple groups, and the upper surface of the control panel is fixedly connected with a lead plate.

[0022] As a further description of the above technical solution:

[0023] A method for using a delivery system for an adjustable left atrial appendage occluder comprises the following steps:

[0024] S1: Preparation step. First, insert the outer tube into the shell until the front surface of the limit ring contacts the rear surface of the limit block. Then rotate the threaded sleeve to drive the clamping sleeve to tighten inward, so that the outer tube can be fixed. Then use the power supply to connect the control panel. At this time, the preparation work is completed.

[0025] S2: connection step. When the control panel is fixed, one of the groups of connection blocks can be plugged into the upper surface of the connection seat. When plugging, it is necessary to align the slot with the plug. In the process of moving the connection block downward, the card block will be squeezed by the connection block and bend. When the lower surface of the connection block fits with the upper surface of the connection seat, the card block will recover through its own elastic deformation. At the same time, the card block will be stuck into the inside of the card slot and squeeze the unlocking block to force its rear surface to detach from the inside of the connection block. After the two groups of connection blocks are connected to the two groups of connection seats respectively, the connection step will be completed.

[0026] S3: Insertion step. When the overall connection step is completed, the outer tube can be inserted into the patient's body along the opening of the patient's body, and the rear end of the outer tube is moved along the main blood vessels in the patient's body to the surgical site. At this time, the insertion of the entire device is completed.

[0027] S4: Adjustment step. When the insertion is completed, the actual position of the outer tube end and the surgical position can be determined by angiography and other observation equipment. Then, the position of the outer tube end can be adjusted according to the error. First, the switch on the surface of the control panel needs to be started to power the control panel. Then, the switch can be adjusted to control the start of the motor on the left side of the control panel. The start of the motor will drive the threaded rod to rotate. The rotation of the threaded rod will drive the threaded plate to move forward. The forward movement of the threaded plate will drive the connecting seat to move forward. The forward movement of the connecting seat will drive the connecting block to move forward. The forward movement of the connecting block will pull the traction rope 2 forward. The forward movement of the traction rope 2 will pull the outer wall of the rotating ring to force the rotating ring to rotate. The rotation of the rotating ring will drive the connecting telescopic rod to rotate. The rotation of the connecting telescopic rod will drive the bending tube to rotate. The rotation of the bending tube will change the outer The end of the tube is bent in the direction, when the end of the outer tube is facing the surgical position, it means that the rotation direction of the entire device has been adjusted. At this time, the remaining switches can be operated to drive another set of motors to start. The start of the other set of motors will drive traction rope one to move forward, and the movement of traction rope one forward will pull the fixed ring forward, and the movement of the fixed ring forward will pull the rotating ring forward, and the movement of the rotating ring forward will pull traction rope three to move forward, and the front end of traction rope three moves forward and drives the rear end to move forward. Since traction rope three can only move forward and backward inside the outer tube, and multiple sets of bent tubes are restricted by springs and the bottom ends cannot move close to each other, the rear end of traction rope three moves forward and pulls the bent tube to move to one side, thereby driving the end of the outer tube to bend and tilt to one side, so that the end opening of the inner tube can be aligned with the surgical position.

[0028] The present invention has the following beneficial effects:

[0029] 1. In the present invention, by setting an adjustment mechanism, when the operator pulls the traction rope 2, the traction rope will drive the rotating ring to rotate, so that the direction of the bending component can be changed, and then the traction rope 1 can be pulled to drive the fixed ring to move forward. The fixed ring will pull the traction rope 3 to drive the end of the outer tube to tilt up. Through the cooperation of the bending component and the rotating component, the end of the outer tube can be aligned with the installation position, which is convenient for subsequent installation.

[0030] 3. In the present invention, by setting a control mechanism, the whole device can be controlled by means of a motor and a switch, and the probability of operator misoperation can be reduced by setting an indicator mark on the upper surface of the control panel. The whole device can be controlled by adjusting the switch during operation, which is more convenient during operation.

[0031] 2. In the present invention, by adopting a modular design, the outer tube and its internal components can be replaced at any time during use. In this way, when the outer tube or its internal components are damaged, the connecting block can be directly removed from the upper surface of the connecting seat, so that the connection between the adjusting mechanism and the control mechanism can be released, and then the threaded sleeve can be screwed to release the fixation of the outer tube, and then the outer tube can be removed from the inside of the shell, which makes it more convenient to replace the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the three-dimensional structure of the overall device of the present invention;

[0033] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the outer tube in the present invention;

[0034] Figure 3 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism in the present invention;

[0035] Figure 4 It is a schematic diagram of the three-dimensional structure cross-section of the bending tube in the present invention;

[0036] Figure 5 It is a schematic cross-sectional view of the three-dimensional structure of the rotating ring in the present invention;

[0037] Figure 6 It is a schematic diagram of the three-dimensional structure section of the shell in the present invention;

[0038] Figure 7 It is a schematic diagram of the three-dimensional structure section of the connecting block in the present invention;

[0039] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged three-dimensional structure of part A.

[0040] Legend:

[0041] 1. Shell; 2. Control panel; 3. Outer tube; 4. Adjustment mechanism; 41. Traction rope one; 42. Traction rope two; 43. Fixed ring; 44. Support ring; 45. Rotating ring; 46. Traction rope three; 47. Torsion spring; 48. Sliding sleeve; 49. Spline; 410. Bending tube; 411. Bending groove; 412. Shrapnel; 413. Keyway; 414. Connecting telescopic rod; 5. Control mechanism; 51. Lead plate; 52. Connecting block; 53. Fixed sleeve; 54. Motor; 55. Threaded plate; 56. Threaded rod; 57. Connecting seat; 58. Slot; 59. Block; 510. Slot; 511. Unlocking block; 512. Insert block; 6. Switch; 7. Clamping sleeve; 8. Threaded sleeve; 9. Indicator mark; 10. Inner tube; 11. Limit block; 12. Limit ring; 13. Plastic tube. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Reference Figure 1 - Figure 5An embodiment of the present invention is a delivery system and a method for using an adjustable left atrial appendage occluder, comprising a shell 1 for supporting a control mechanism 5, a control panel 2 for controlling a circuit being installed on the upper surface of the shell 1, an outer tube 3 for direct contact with a patient's body being plugged into the inner wall of the shell 1, a plastic tube 13 for maintaining the shape of the outer tube 3 being fixedly connected to the inner wall of the outer tube 3, the plastic tube 13 having a certain deformation ability and support ability, so that the outer tube 3 can move along the main blood vessels in the patient's body when moving in the patient's body, and is not easy to damage the blood vessels, an inner tube 10 for a delivery device to pass through being fixedly connected to the inner wall of the plastic tube 13, the inner wall of the inner tube 10 being smooth, the delivery device can be directly used to penetrate the inner tube 10 to deliver the left atrial appendage occluder, the outer tube 3 and The inner tube 10 is mainly connected by the plastic tube 13, and the position where the plastic tube 13 is not installed is in a hollow state. The inner wall of the outer tube 3 is provided with an adjusting mechanism 4 for controlling the bending of the outer tube 3 near the rear end. The adjusting mechanism 4 includes a rotating component and a bending component. The rotating component includes a traction rope 2 42, a fixed ring 43, a support ring 44, a rotating ring 45, a torsion spring 47, and a sliding sleeve 48 for controlling the bending direction of the outer tube 3. The fixed ring 43 is fixedly connected to the outer wall of the inner tube 10, and the fixed ring 43 can be used to guide the traction rope 1 41 and the traction rope 2 42. The sliding sleeve 48 slides on the outer wall of the inner tube 10, and the sliding sleeve 48 can slide back and forth on the outer wall of the inner tube 10. The rotating ring 45 is rotatably connected to the front surface of the sliding sleeve 48, and one end of the traction rope 2 42 is fixedly connected to the outer wall of the rotating ring 45. The middle part of the traction rope 42 is wound around the outer wall of the rotating ring 45. When the traction rope 42 is pulled, the traction rope 42 will pull the rotating ring 45 to rotate it. The front end of the traction rope 42 passes through and is inserted into the interior of the support ring 44. The front end of the traction rope 42 passes through and is inserted into the front surface of the fixed ring 43. One end of the torsion spring 47 is fixedly connected to the outer wall of the sliding sleeve 48, and the other end of the torsion spring 47 is fixedly connected to the rear surface of the rotating ring 45. When the rotating ring 45 is not in the initial position and is not affected by the tension, the torsion spring 47 will drive the rotating ring 45 to rotate and reset through its own elastic deformation. The bending assembly includes a plurality of bending tubes 410. The bending tubes 410 are hollow circular rings with notches on the upper and lower surfaces. The plurality of bending tubes 410 are connected by spring sheets 41 2 are connected to each other, the lower surface of the bending tube 410 is fixedly connected to the upper surface of the spring piece 412, the spring piece 412 is made of metal material, and when it is not in a horizontally stretched state, it will recover through its own elastic deformation, wherein the upper surface of the bending tube 410 at the rearmost position is fixedly connected with a traction rope 3 46 for driving the bending tube 410 to move, the notch on the upper surface of the bending tube 410 can be used to accommodate the traction rope 3 46, and the notch on the lower surface of the bending tube 410 can be used to accommodate the spring piece 412, the front end of the traction rope 3 46 is fixedly connected to the outer wall of the rotating ring 45, when the rotating ring 45 moves forward, it will drive the rearmost group of bending tubes 410 to move forward by pulling the traction rope 3 46, the rear surface of the rotating ring 45 is fixedly connected with a connecting telescopic rod 414,The rear surface of the output end of the connecting telescopic rod 414 is fixedly connected to the front surface of the frontmost group of bending tubes 410. When the connecting telescopic rod 414 rotates, it drives the frontmost group of bending tubes 410 to rotate through the connecting telescopic rod 414. The control panel 2 controls the adjustment mechanism 4 through the control mechanism 5.

[0044] Reference Figure 2 - Figure 5 The bending assembly also includes a keyway 413 for guiding the movement of the support ring 44. The keyway 413 is arranged on the outer wall of the inner tube 10. The inner wall of the support ring 44 is provided with a spline 49 for limiting the horizontal movement of the support ring 44. The spline 49 slides on the inner wall of the keyway 413. There are multiple groups of splines 49, and another group of splines 49 is arranged on the inner wall of the sliding sleeve 48. By setting the spline 49, the support ring 44 and the sliding sleeve 48 can be limited to horizontal forward and backward movement, but cannot rotate on the outer wall of the inner tube 10. A bending groove 411 for providing space for the bending tube 410 to bend is arranged between two adjacent groups of bending tubes 410. The outer wall of the last group of bending tubes 410 is rotatably connected to the inner wall of the outer tube 3. The rear surface of the group of bending tubes 410, the rear surface of the inner tube 10 and the rear surface of the outer tube 3 together form a closed plane. By setting the rear end face of the device as a closed plane, the fluid in the patient's body can be prevented from entering the interior of the device.

[0045] Reference Figure 1 , Figure 6 and Figure 7The outer wall of the outer tube 3 is provided with an opening for the traction rope 2 42 and the traction rope 1 41 to be separated from the inner wall of the outer tube 3 at a position close to the rear surface of the shell 1. After the traction rope 2 42 and the traction rope 1 41 are separated from the inner wall of the outer tube 3, the movement of the traction rope 2 42 and the traction rope 1 41 can be controlled from the outside, which is more convenient during control. The traction rope 1 41 and the traction rope 2 42 are separated from the inner tube 10 through the opening. The control mechanism 5 includes two groups of connecting blocks 52, one of which has a rear surface fixedly connected to the front end of the traction rope 2 42. By pulling the two groups of connecting blocks 52 respectively, the movement of the front end of the traction rope 2 42 and the traction rope 1 41 can be controlled respectively, and the rear surface of the other group of connecting blocks 52 is fixedly connected to the front end of the traction rope 1 41. The control mechanism 5 also includes a connecting seat 57 for driving the connecting block 52 to move. Any group of connecting blocks 52 can be plugged into the upper surface of the connecting seat 57. When the connecting seat 57 moves back and forth, its upper surface can be driven The plug-in connecting block 52 moves synchronously, and the connecting seat 57 penetrates and is slidably connected to the upper surface of the control panel 2. The connecting seat 57 can slide back and forth on the upper surface of the control panel 2 but cannot rotate or detach. The lower surface of the connecting seat 57 is fixedly connected with a threaded plate 55 for driving the connecting seat 57 to move. A group of shielding plates are also provided at the connection between the threaded plate 55 and the connecting seat 57, which can be used to block the empty groove opened on the upper surface of the control panel 2 for the connection seat 57 to move. The lower surface of the control panel 2 is installed with a motor 54 for driving the threaded rod 56 to rotate. The rear end of the output shaft of the motor 54 is fixedly connected with a threaded rod 56 for driving the threaded plate 55 to move. The threaded plate 55 is threadedly connected to the outer wall of the threaded rod 56. By starting the motor 54, the threaded rod 56 can be driven to rotate, and the rotation of the threaded rod 56 can drive the threaded plate 55 to move back and forth. The motor 54 mentioned in this case is a DC motor, and its forward or reverse rotation can be controlled by controlling the positive and negative pole connection directions.

[0046] Reference Figure 6 - Figure 8The upper surface of the connecting seat 57 is fixedly connected with an insert block 512 for positioning the connecting block 52, and the lower surface of the connecting block 52 is provided with a slot 58 for accommodating the insert block 512. The connecting seat 57 and the slot 58 are adapted to each other. The initial positioning of the connecting block 52 can be achieved by aligning the slot 58 with the connecting seat 57. The upper surface of the connecting seat 57 is fixedly connected with a block 59 for limiting the upward and downward movement of the connecting block 52. The block 59 is set to be L-shaped, and an inclined surface is set at the upper end. It is made of plastic material and has The connecting block 52 has good elastic deformation ability. It will bend and deform after being squeezed, and it can automatically recover when the pressure disappears. The lower surface of the connecting block 52 is provided with a slot 510 for accommodating the card block 59. The card block 59 and the slot 510 are adapted. When the card block 59 is inserted into the inside of the slot 510, the connecting block 52 will be fixed and cannot move up and down. The inner wall of the slot 510 is slidably connected to an unlocking block 511 used to drive the card block 59 out of the slot 510. The motor 54, the threaded rod 56, the threaded plate 55, and the connecting The seat 57 is provided with multiple groups, and the multiple groups of motors 54, threaded rods 56, threaded plates 55, and connecting seats 57 are symmetrically arranged with the center line of the shell 1 as the symmetry axis. The upper surface of the control panel 2 is installed with switches 6, and the number is five. Among them, four groups of switches 6 can respectively control the forward and reverse rotation of the two groups of motors 54. The two groups of switches 6 and the corresponding motors 54 respectively form two groups of series circuits with opposite current directions. When one group of switches 6 is connected, the internal circuit of this group will be energized, so that the motor 54 can be driven to work. Since the current directions inside the two groups of circuits are opposite, the two groups of switches 6 can respectively control the forward or reverse rotation of the motor 54. The remaining group of switches 6 can control the power on and off of the entire device. The motor 54 and the corresponding circuit are all powered by the control panel 2, and the control panel 2 is directly powered by an external power supply. This group of switches 6 can directly control the connection between the control panel 2 and the external power supply. Since the power supply is a prior art, it will not be described in detail in this case. By adjusting the switch 6, a signal can be sent to the motor 54 to control its operation.

[0047] Reference Figure 1 , Figure 6 and Figure 7The front surface of the shell 1 is fixedly connected with a clamping sleeve 7 for limiting the movement of the outer tube 3. The outer tube 3 penetrates and is inserted into the inner wall of the clamping sleeve 7. The outer wall of the clamping sleeve 7 is threadedly connected with a threaded sleeve 8 for squeezing the clamping sleeve 7. By tightening the threaded sleeve 8, the clamping sleeve 7 can be driven to clamp the outer tube 3, so that the outer tube 3 will be fixed and cannot move forward and backward. The rear surface of the shell 1 is fixedly connected with a limit block 11 for limiting the insertion range of the outer tube 3. The outer wall of the outer tube 3 is fixedly connected with a limit ring 12 for limiting the movement of the outer tube 3. When the limit block 11 and the limit ring 12 are released, the outer tube 3 will not be able to continue to penetrate into the interior of the shell 1. The upper surface of the control panel 2 is fixedly connected with a fixing sleeve 53 and the number is multiple groups. When the connecting block 52 is not in the initial position, the fixing sleeve 53 will cover its outer wall, so that the connecting block 52 can be limited to prevent it from moving upward. The upper surface of the control panel 2 is provided with an indication mark 9 for prompting the operator of the function of the switches 6 on both sides and the number is multiple groups. The upper surface of the control panel 2 is fixedly connected with a lead plate 51.

[0048] The present embodiment also provides a method for using an adjustable left atrial appendage occluder delivery system, comprising the following steps: S1: a preparation step, firstly, the outer tube 3 needs to be inserted into the interior of the shell 1 until the front surface of the limit ring 12 contacts the rear surface of the limit block 11, and then the threaded sleeve 8 is rotated to drive the clamping sleeve 7 to tighten inward, so that the outer tube 3 can be fixed, and then the control panel 2 is connected using a power supply, and the preparation work is completed at this time.

[0049] S2: connection step. When the control panel 2 is fixed, one of the connection blocks 52 can be plugged into the upper surface of the connection seat 57. When plugging, it is necessary to align the slot 58 with the plug block 512. In the process of moving the connection block 52 downward, the card block 59 will be squeezed by the connection block 52 and bend. When the lower surface of the connection block 52 is in contact with the upper surface of the connection seat 57, the card block 59 will recover through its own elastic deformation. At the same time, the card block 59 will be inserted into the inside of the card slot 510 and squeeze the unlocking block 511 to force its rear surface to detach from the inside of the connection block 52. After the two groups of connection blocks 52 are connected to the two groups of connection seats 57 respectively, the connection step will be completed.

[0050] S3: Insertion step. When the overall connection step is completed, the outer tube 3 can be inserted into the patient's body along the opening of the patient's body, and the rear end of the outer tube 3 is moved along the main blood vessels in the patient's body to the surgical site. At this time, the insertion of the entire device is completed.

[0051] S4: adjustment step. When the insertion is completed, the actual position of the end of the outer tube 3 and the surgical position can be determined by angiography and other observation equipment, and then the position of the end of the outer tube 3 can be adjusted according to the error. First, the switch 6 on the surface of the control panel 2 needs to be started to power the control panel 2. Then, the switch 6 can be adjusted to control the motor 54 on the left side of the control panel 2 to start. The start of the motor 54 will drive the threaded rod 56 to rotate. The rotation of the threaded rod 56 will drive the threaded plate 55 to move forward. The forward movement of the threaded plate 55 will drive the connecting seat 57 to move forward. The forward movement of the connecting seat 57 will drive the connecting block 52 to move forward. The forward movement of the connecting block 52 will pull the traction rope 2 42 forward. The forward movement of the traction rope 2 42 will pull the outer wall of the rotating ring 45 to force the rotating ring 45 to rotate. The rotation of the rotating ring 45 will drive the connecting telescopic rod 414 to rotate. The rotation of the connecting telescopic rod 414 will drive the bending tube 410 to rotate. The bending direction of the end of the outer tube 3 will be changed. When the end of the outer tube 3 is toward the surgical position, it means that the rotation direction of the entire device has been adjusted. At this time, the remaining switches 6 can be operated to drive another set of motors 54 to start. The start of another set of motors 54 will drive the traction rope 1 41 to move forward. The forward movement of the traction rope 1 41 will pull the fixed ring 43 forward. The forward movement of the fixed ring 43 will pull the rotating ring 45 forward. The forward movement of the rotating ring 45 will pull the traction rope 3 46 to move forward. The front end of the traction rope 3 46 moves forward and drives the rear end to move forward. Since the traction rope 3 46 can only move forward and backward inside the outer tube 3, and the multiple sets of bending tubes 410 are restricted by the spring sheet 412, the bottom ends cannot move close to each other. Therefore, the rear end of the traction rope 3 46 moves forward and pulls the bending tube 410 to move to one side, so that the end of the outer tube 3 can be driven to bend and tilt to one side, so that the end opening of the inner tube 10 can be aligned with the surgical position.

[0052] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A delivery system and a method for using an adjustable left atrial appendage occluder, comprising a housing (1), characterized in that: A control panel (2) is installed on the upper surface of the shell (1); an outer tube (3) is inserted into the inner wall of the shell (1); a plastic tube (13) is fixedly connected to the inner wall of the outer tube (3); an inner tube (10) is fixedly connected to the inner wall of the plastic tube (13); an adjustment mechanism (4) is arranged near the rear end of the inner wall of the outer tube (3); the adjustment mechanism (4) comprises a rotating assembly and a bending assembly; the rotating assembly comprises a traction rope (42), a fixing ring (43), a support ring (44), A rotating ring (45), a torsion spring (47), and a sliding sleeve (48), wherein the fixed ring (43) is fixedly connected to the outer wall of the inner tube (10), the sliding sleeve (48) slides on the outer wall of the inner tube (10), the rotating ring (45) is rotatably connected to the front surface of the sliding sleeve (48), one end of the traction rope (42) is fixedly connected to the outer wall of the rotating ring (45), the middle part of the traction rope (42) is wound around the outer wall of the rotating ring (45), and the front end of the traction rope (42) passes through and is plugged into the support The front end of the traction rope (42) passes through and is inserted into the front surface of the fixed ring (43), one end of the torsion spring (47) is fixedly connected to the outer wall of the sliding sleeve (48), and the other end of the torsion spring (47) is fixedly connected to the rear surface of the rotating ring (45). The bending assembly includes a plurality of bending tubes (410), and the plurality of bending tubes (410) are connected to each other through spring sheets (412). The lower surface of the bending tube (410) is fixedly connected to the spring sheets (412). ), wherein the upper surface of the bending tube (410) at the rearmost position is fixedly connected to a traction rope three (46), the front end of the traction rope three (46) is fixedly connected to the outer wall of the rotating ring (45), the rear surface of the rotating ring (45) is fixedly connected to a connecting telescopic rod (414), the rear surface of the connecting telescopic rod (414) is fixedly connected to the front surface of the frontmost group of the bending tubes (410), and the control panel (2) controls the adjustment mechanism (4) through the control mechanism (5).

2. The adjustable bend left atrial appendage occluder delivery system and use method according to claim 1, characterized in that: The bending component also includes a keyway (413), which is arranged on the outer wall of the inner tube (10), and the inner wall of the support ring (44) is provided with a spline (49), and the spline (49) slides on the inner wall of the keyway (413). The splines (49) are provided in multiple groups, and another group of the splines (49) is arranged on the inner wall of the sliding sleeve (48).

3. The adjustable bend left atrial appendage occluder delivery system and use method according to claim 1, characterized in that: A bending groove (411) is provided between two adjacent groups of the bending tubes (410); the outer wall of the last group of the bending tubes (410) is rotatably connected to the inner wall of the outer tube (3); the rear surface of the group of the bending tubes (410), the rear surface of the inner tube (10) and the rear surface of the outer tube (3) together form a closed plane.

4. The adjustable bend left atrial appendage occluder delivery system and use method according to claim 1, characterized in that: An opening is provided on the outer wall of the outer tube (3) near the rear surface of the shell (1) for allowing the second traction rope (42) and the first traction rope (41) to detach from the inner wall of the outer tube (3); the first traction rope (41) and the second traction rope (42) detach from the interior of the inner tube (10) through the opening; the control mechanism (5) comprises two groups of connecting blocks (52); the rear surface of one group of the connecting blocks (52) is fixedly connected to the front end of the second traction rope (42); and the rear surface of the other group of the connecting blocks (52) is fixedly connected to the front end of the first traction rope (41).

5. The adjustable bend left atrial appendage occluder delivery system and use method according to claim 4, characterized in that: The control mechanism (5) further comprises a connection seat (57), any group of the connection blocks (52) can be plugged into the upper surface of the connection seat (57), the connection seat (57) penetrates and is slidably connected to the upper surface of the control panel (2), the lower surface of the connection seat (57) is fixedly connected to a threaded plate (55), the lower surface of the control panel (2) is mounted with a motor (54), the rear end of the output shaft of the motor (54) is fixedly connected to a threaded rod (56), and the threaded plate (55) is threadedly connected to the outer wall of the threaded rod (56).

6. The adjustable bend left atrial appendage occluder delivery system and use method according to claim 5, characterized in that: An insert block (512) is fixedly connected to the upper surface of the connection seat (57), a slot (58) is provided on the lower surface of the connection block (52), and the connection seat (57) and the slot (58) are adapted to each other.

7. The adjustable bend left atrial appendage occluder delivery system and use method according to claim 5, characterized in that: A clamping block (59) is fixedly connected to the upper surface of the connecting seat (57), a clamping slot (510) is provided on the lower surface of the connecting block (52), the clamping block (59) and the clamping slot (510) are adapted to each other, and an unlocking block (511) is slidably connected to the inner wall of the clamping slot (510).

8. The adjustable bend left atrial appendage occluder delivery system and use method according to claim 5, characterized in that: The motor (54), the threaded rod (56), the threaded plate (55), and the connecting seat (57) are provided in a plurality of groups, and the plurality of groups of the motor (54), the threaded rod (56), the threaded plate (55), and the connecting seat (57) are symmetrically arranged with the center line of the housing (1) as the symmetry axis. The upper surface of the control panel (2) is provided with switches (6) in a number of five groups, wherein four groups of the switches (6) can respectively control the forward and reverse rotation of the two groups of motors (54), and the remaining group of the switches (6) can control the power on and off of the entire device, and by adjusting the switches (6), a signal can be sent to the motor (54) to control its operation.

9. The adjustable bend left atrial appendage occluder delivery system and use method according to claim 1, characterized in that: The front surface of the shell (1) is fixedly connected to a clamping sleeve (7), the outer tube (3) passes through and is inserted into the inner wall of the clamping sleeve (7), the outer wall of the clamping sleeve (7) is threadedly connected to a threaded sleeve (8), the rear surface of the shell (1) is fixedly connected to a limit block (11), the outer wall of the outer tube (3) is fixedly connected to a limit ring (12), the upper surface of the control panel (2) is fixedly connected to a plurality of fixed sleeves (53), the upper surface of the control panel (2) is provided with a plurality of indicating marks (9), and the upper surface of the control panel (2) is fixedly connected to a lead plate (51).

10. A method for using a delivery system for an adjustable left atrial appendage occluder according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Preparation step, first, the outer tube (3) needs to be inserted into the interior of the housing (1) until the front surface of the limit ring (12) contacts the rear surface of the limit block (11), and then the threaded sleeve (8) is rotated to drive the clamping sleeve (7) to tighten inward, so that the outer tube (3) can be fixed, and then the control panel (2) is connected using a power supply, and the preparation work is now completed. S2: connection step. When the control panel (2) is fixed, one of the connection blocks (52) can be plugged into the upper surface of the connection seat (57). When plugging, it is necessary to align the slot (58) with the plug block (512). In the process of moving the connection block (52) downward, the card block (59) will be squeezed by the connection block (52) and bend. When the lower surface of the connection block (52) is in contact with the upper surface of the connection seat (57), the card block (59) will recover through its own elastic deformation. At the same time, the card block (59) will be inserted into the inside of the card slot (510) and squeeze the unlocking block (511) to force its rear surface to be separated from the inside of the connection block (52). After the two groups of connection blocks (52) are connected to the two groups of connection seats (57) respectively, the connection step will be completed. S3: Insertion step. When the overall connection step is completed, the outer tube (3) can be inserted into the patient's body along the opening of the patient's body, and the rear end of the outer tube (3) is moved along the main blood vessels in the patient's body to the surgical site. At this time, the insertion of the overall device is completed. S4: Adjustment step. After the insertion is completed, the actual position of the end of the outer tube (3) and the surgical position can be determined by an observation device such as angiography. Then, the position of the end of the outer tube (3) can be adjusted according to the error. First, the switch (6) on the surface of the control panel (2) needs to be started to power the control panel (2). Then, the switch (6) can be adjusted to control the motor (54) located on the left side of the control panel (2) to start. The motor (54) starts to drive the threaded rod (56) to rotate. The rotation of the threaded rod (56) drives the threaded plate (55) to rotate. ) moves forward, the threaded plate (55) moves forward, which drives the connecting seat (57) to move forward, which drives the connecting block (52) to move forward, which drives the traction rope (42) to move forward, which drives the outer wall of the rotating ring (45) to force the rotating ring (45) to rotate, which drives the connecting telescopic rod (414) to rotate, which drives the bending tube (410) to rotate, and the bending tube (410) to rotate. 10) rotation will change the bending direction of the end of the outer tube (3). When the end of the outer tube (3) is facing the surgical position, it means that the rotation direction of the entire device has been adjusted. At this time, the remaining switches (6) can be operated to drive another set of motors (54) to start. The start of the other set of motors (54) will drive the traction rope 1 (41) to move forward. The forward movement of the traction rope 1 (41) will pull the fixed ring (43) forward. The forward movement of the fixed ring (43) will pull the rotating ring (45) forward. The forward movement of the rotating ring (45) will pull the traction rope The traction rope (46) moves forward, and the front end of the traction rope (46) moves forward, which drives the rear end to move forward. Since the traction rope (46) can only move forward and backward inside the outer tube (3), and the multiple groups of bending tubes (410) are restricted by the spring sheet (412), the bottom ends cannot move closer to each other. Therefore, the rear end of the traction rope (46) moves forward, which pulls the bending tube (410) to move to one side, thereby driving the end of the outer tube (3) to bend and tilt to one side, so that the end opening of the inner tube (10) can be aligned with the surgical position.

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