Plugging device conveying device and system

Abstract

The invention relates to an occluder conveying device and system. The conveying device comprises a conveying part, a handle part and a turning rod part. The conveying part comprises a storage sheath, a conveying steel cable and a clamping jaw, the conveying steel cable and the clamping jaw are arranged in the storage sheath, the storage sheath can axially move relative to the conveying steel cable, the near end of the conveying steel cable penetrates through the handle part, the far end of the conveying steel cable is connected with the clamping jaw, and the clamping jaw is used for clamping a conveying connecting piece of the plugging device. The clamping jaw can release the conveying connecting piece after penetrating out of the far end of the containing sheath. The turnover rod part is arranged on the handle part in a turnover mode, the turnover rod part is connected with the near end of the containing sheath, the turnover rod part can drive the containing sheath to move in the axial direction so as to contain or release the clamping jaw, and finally connection or release of the plugging device is achieved.

Description

Technical Field

[0001] The present invention relates to the field of medical devices for interventional procedures, and in particular to an occluder delivery device and system. Background Art

[0002] The main treatments for congenital heart diseases such as patent foramen ovale, atrial septal defect, and ventricular septal defect include surgical treatment, interventional treatment, and conservative drug treatment. Currently, the most commonly used and effective implantable device in minimally invasive treatment is the occluder.

[0003] Existing occluder delivery systems often use a threaded cable end. This type of cable end can only be used to deliver occluders with threaded connectors. Furthermore, threaded occluders are not easily endothelialized after implantation, resulting in suboptimal occlusion. Therefore, occluders with a ball-end design can effectively address this issue.

[0004] However, most existing occluder delivery systems are suitable for occluders with a threaded structure, which is relatively complex and inconvenient to operate. Therefore, how to provide an occluder delivery system suitable for a ball-type connection design has become a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The present invention discloses an occluder delivery device and system, aiming to solve the technical problems existing in the prior art.

[0006] The present invention adopts the following technical solutions:

[0007] On the one hand, an embodiment of the present invention provides an occluder delivery device, comprising a delivery portion, a handle portion, and a turning rod portion;

[0008] The delivery portion includes a storage sheath and a delivery cable and a clamping claw disposed therein. The storage sheath is capable of axially moving relative to the delivery cable. The proximal end of the delivery cable is inserted into the handle portion, and the distal end of the delivery cable is connected to the clamping claw. The clamping claw is used to clamp the delivery connector of the occluder. The clamping claw can release the delivery connector after passing through the distal end of the storage sheath.

[0009] The turning rod part is turnably arranged on the handle part, and the turning rod part is connected to the proximal end of the storage sheath. The turning of the turning rod part can drive the axial movement of the storage sheath.

[0010] As a preferred technical solution, the turning rod portion includes:

[0011] - a flip lever body, the flip lever body being rotatably connected to the handle portion;

[0012] - a flip rod connector, wherein the distal end of the flip rod connector is connected to the proximal end of the storage sheath, and the proximal end of the flip rod connector is eccentrically connected to the flip rod body;

[0013] The rotation of the flip rod body can drive the axial movement of the flip rod connecting piece.

[0014] As a preferred technical solution, the flip rod body includes a first support ring and a second support ring that are arranged opposite to each other. The first support ring and the second support ring are both columnar and are respectively arranged on both sides of the handle.

[0015] As a preferred technical solution, a pair of transmission rods are provided at the proximal end of the flip rod connector, the transmission rods are arranged axially parallel, and the proximal ends of the two transmission rods are provided with fixed columns, the axes of the fixed columns are perpendicular to the axes of the transmission rods, and the two fixed columns are coaxially arranged;

[0016] The first support ring and the second support ring are both provided with a fixing column receiving groove and a transmission rod through groove. The fixing column can rotate in the fixing column receiving groove, and the transmission rod can rotate in the transmission rod through groove.

[0017] As a preferred technical solution, the fixing column receiving groove is configured as a cylindrical groove, which is arranged on the outer peripheral side of the first support ring and / or the second support ring, and the fixing column receiving groove is arranged parallel to the axis of the first support ring and / or the second support ring.

[0018] As a preferred technical solution, the transmission rod through groove is configured as a fan-shaped groove, and the transmission rod through groove is arranged perpendicular to the axis of the first support ring and / or the second support ring.

[0019] As a preferred technical solution, the transmission rod through groove intersects and communicates with the middle portion of the fixed column receiving groove.

[0020] As an optimal technical solution, a steel cable connector is provided in the handle, a limiting rod is provided at the far end of the flip rod connector, the conveying steel cable passes through the limiting rod and is connected to the steel cable connector, and a flip rod spring is provided between the limiting rod and the steel cable connector.

[0021] As an optimal technical solution, the limit rod is arranged perpendicular to the axis of the conveying steel cable, a spring receiving hole is provided in the middle of the limit rod, and both ends of the flip rod spring are respectively in contact with the spring receiving hole and the steel cable connector.

[0022] As a preferred technical solution, it further includes a locking portion, which is connected to the handle portion and can be engaged with or separated from the flip rod portion;

[0023] When the locking portion is engaged with the flip rod portion, the locking portion limits the flip rod portion in a circumferential direction to restrict the flipping of the flip rod portion; when the locking portion is separated from the flip rod portion, the flip rod portion can flip freely.

[0024] As a preferred technical solution, the turning rod body is provided with meshing teeth;

[0025] The locking portion comprises a locking rod which is passed through the handle portion. The distal end of the locking rod is provided with a locking tooth which can engage with the meshing tooth to circumferentially limit the flip rod portion.

[0026] As a preferred technical solution, the proximal end of the locking rod passes through the outside of the handle part, and a raised limiting ring is provided at the proximal end of the locking rod. A locking spring is provided between the limiting ring and the handle part, and the distal end of the locking spring abuts against the handle part, and the proximal end of the locking spring abuts against the limiting ring. The locking spring is used to maintain the meshing relationship between the locking teeth and the meshing teeth.

[0027] As a preferred technical solution, a distal sleeve is provided at the distal end of the storage sheath, and the distal sleeve is used to accommodate the clamping claws and the delivery connector.

[0028] As a preferred technical solution, the clamping jaws are provided with clamping grooves, the contour of which matches the non-threaded conveying connection piece.

[0029] On the other hand, an embodiment of the present invention provides an occluder delivery system, comprising the occluder delivery device as described in any one of the above items, and further comprising an occluder.

[0030] As a preferred technical solution, a delivery connector is provided at the proximal end of the occluder, and the delivery connector is releasably connected to the occluder delivery device;

[0031] The delivery connection is configured as a non-threaded ball head.

[0032] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0033] (1) The present invention provides an occluder delivery device, the structure of which mainly consists of a delivery part, a handle part, a turning rod part and a locking part;

[0034] When the locking portion is pressed, the locking portion can unlock the flip rod portion, and the flip rod is flipped and lifted upward, and the receiving sheath of the delivery portion is withdrawn, and the clamping claws are exposed and automatically open to clamp and store the occluder. At this time, the locking portion is released, and the locking portion can lock the flip rod portion again based on the elasticity of the locking spring. The locking portion is pressed again and the flip rod is flipped downward, and the clamping claws together with the ball head of the occluder are stored in the receiving sheath. At this time, the locking portion is released and the flip rod portion is locked again.

[0035] In the working state, the occluder delivery device together with the occluder is delivered to the target position in the body along the sheath, and the release angle of the occluder is adjusted appropriately as needed. When the occluder needs to be released subjectively, the locking part is pressed and the flip rod is lifted upward. After the clamping claws and the occluder ball head are exposed from the receiving sheath, the clamping claws are opened again and the occluder is released, thus completing the occluder release operation;

[0036] Keep pressing the locking part and flip the lever downward, store the clamping claws in the receiving sheath and then release the locking part. The locking part locks the lever and the delivery device is moved out of the body along the sheath, thus completing the implantation process of the occluder.

[0037] (2) The occluder delivery device provided by the present invention can effectively deliver an occluder with a ball-type connection design without a threaded structure, and can effectively lock the ball head during the delivery process to prevent the occluder from being unexpectedly released before the subjective release, thereby improving the safety during delivery; and can quickly unlock the occluder when the subjective release is made, making the use of the entire delivery device more convenient and quick, thereby improving the surgical efficiency of medical personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments, which constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0039] Figure 1 This is a schematic structural diagram of the occluder delivery device disclosed in a preferred embodiment of Example 1 of the present invention when the turning rod portion is not turned over;

[0040] Figure 2 This is a schematic structural diagram of the occluder delivery device disclosed in a preferred embodiment of Example 1 of the present invention after the turning rod portion is turned over;

[0041] Figure 3 This is a schematic diagram of the connection between the clamp and the occluder disclosed in a preferred embodiment of Example 1 of the present invention;

[0042] Figure 4 This is a schematic diagram of the internal structure of the occluder delivery device disclosed in a preferred embodiment of Example 1 of the present invention;

[0043] Figure 5 This is a structural exploded view of the occluder delivery device disclosed in a preferred embodiment of Example 1 of the present invention;

[0044] Figure 6 for Figure 5 A magnified view of point A in the figure;

[0045] Figure 7 This is a diagram showing the internal structure of the handle portion disclosed in a preferred embodiment of Example 1 of the present invention;

[0046] Figure 8 This is a schematic structural diagram of a turning rod body disclosed in a preferred embodiment of Example 1 of the present invention;

[0047] Figure 9This is a schematic structural diagram of the flip rod body at another angle disclosed in a preferred embodiment of Example 1 of the present invention;

[0048] Figure 10 This is a schematic structural diagram of a flip rod connector disclosed in a preferred embodiment of Example 1 of the present invention;

[0049] Figure 11 This is a schematic structural diagram of a locking portion disclosed in a preferred embodiment of Example 1 of the present invention;

[0050] Figure 12 A schematic diagram of the rotation of the first support ring and / or the second support ring disclosed in a preferred implementation manner of Example 1 of the present invention;

[0051] Figure 13 This is a schematic diagram of the locking teeth and the meshing teeth in a locked state disclosed in a preferred embodiment of Example 1 of the present invention;

[0052] Figure 14 for Figure 13 Enlarged view of point B in the middle;

[0053] Figure 15 This is a schematic diagram of the locking teeth and the engaging teeth in an unlocked state disclosed in a preferred implementation manner of Example 1 of the present invention;

[0054] Figure 16 for Figure 15 Enlarged view of point C.

[0055] Description of reference numerals:

[0056] Delivery part 10, storage sheath 11, distal sleeve 111, proximal sleeve 112, delivery cable 12, clamping claw 13, handle part 20, cable connector 21, flip rod part 30, flip rod body 31, first support ring 311, second support ring 312, fixed column storage groove 313, transmission rod through groove 314, engaging teeth 315, operating part 316, flip rod connector 32, transmission rod 321, fixed column 322, limiting rod 323, spring storage hole 3231, flip rod spring 33, locking part 40, locking rod 41, limiting ring 411, locking teeth 42, locking spring 43, occluder 50, ball head 51. DETAILED DESCRIPTION

[0057] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. In the description of the present invention, it should be noted that the term "or" is generally used in the sense of including "and / or" unless the content clearly indicates otherwise.

[0058] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. The structures, proportions, and sizes illustrated in the drawings of this specification are intended solely to facilitate understanding and reading by those skilled in the art. They are not intended to limit the applicable conditions for the implementation of the present invention and therefore have no substantial technical significance. Any structural modifications, changes in proportions, or adjustments in size that do not affect the efficacy and objectives of the present invention should still fall within the scope of the technical content disclosed in the present invention. Furthermore, terms such as "upper," "lower," "left," "right," "center," and "one" used in this specification are intended solely for ease of description and are not intended to limit the applicable scope of the present invention. In the description of the present application, the terms "first", "second", etc. are only used to distinguish the descriptions and should not be understood as indicating or implying relative importance.

[0059] In the field of interventional medical device technology, the direction closest to the operator is generally defined as the proximal end, and the direction away from the operator is defined as the distal end. The direction of the central axis of objects such as cylinders and tubes is defined as the axial direction. The radial direction refers to the direction passing through the central axis in a radial plane, for example, along a straight line of diameter or radius, or perpendicular to the central axis.

[0060] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0061] In order to solve the problems existing in the prior art, an embodiment of the present application provides an occluder delivery device, including a delivery part 10, a handle part 20 and a flip rod part 30; the delivery part 10 includes a storage sheath 11 and a delivery cable 12 and a clamp 13 arranged therein, the storage sheath 11 can move axially relative to the delivery cable 12, the proximal end of the delivery cable 12 is passed through the handle part 20, and the distal end of the delivery cable 12 is connected to the clamp 13, the clamp 13 is used to clamp the delivery connection piece of the occluder 50, and the clamp 13 can release the delivery connection piece after passing through the distal end of the storage sheath 11; the flip rod part 30 is flippably arranged on the handle part 20, and the flip rod part 30 is connected to the proximal end of the storage sheath 11, and the flipping of the flip rod part 30 can drive the axial movement of the storage sheath 11.

[0062] Example 1

[0063] This embodiment 1 provides an occluder delivery device for connecting, delivering and releasing an occluder 50. The occluder 50 described in this embodiment refers to a device for implantation to treat congenital heart diseases such as patent foramen ovale, atrial septal defect, and ventricular septal defect.

[0064] In some embodiments, the occluder 50 includes an elastic woven mesh and a delivery connector, wherein the elastic woven mesh can be further configured as two disks arranged opposite to each other on the left and right sides, which can be positioned in the left and right sides of the heart respectively after being implanted into the human body. A waist-shaped flexible connector is preferably provided between the two disks, which can be positioned in the hole of the intracardiac defect; the delivery connector is provided at the end of one of the disks, and the delivery connector is preferably configured as a ball head 51 with a non-threaded structure to promote the endothelialization process after the occluder 50 is implanted.

[0065] Specifically, the specific structure and shape of each part of the occluder 50 are not specifically limited in this embodiment, and those skilled in the art can make adaptive adjustments to the corresponding structure according to the actual clinical needs or patient needs.

[0066] It should also be noted that, although the occluder delivery device is described in conjunction with the structure of the occluder 50 in this embodiment, the occluder delivery device does not include the occluder 50 itself, but only serves as its delivery structure.

[0067] like Figure 1 — Figure 16 In some embodiments, the occluder delivery device includes a delivery portion 10, a handle portion 20, and a flip rod portion 30. The delivery portion 10 includes a receiving sheath 11, a delivery cable 12, and a clamping claw 13. The proximal ends of the receiving sheath 11 and the delivery cable 12 are inserted into the handle portion 20. The flip rod portion 30 can be flipped and arranged on the handle portion 20. Figure 1 and Figure 2 The turning rod portion 30 is connected to the proximal end of the receiving sheath 11 , and the turning of the turning rod portion 30 can drive the axial movement of the receiving sheath 11 to receive or release the clamping claws 13 .

[0068] In some embodiments, the handle portion 20 is formed by combining and fixing two left and right shells.

[0069] In some embodiments, the delivery cable 12 and the clamp 13 are arranged in the storage sheath 11, and the storage sheath 11 can move axially relative to the delivery cable 12. The proximal end of the delivery cable 12 is passed through the handle portion 20, and the distal end of the delivery cable 12 is connected to the clamp 13. The clamp 13 is used to clamp the ball head 51 of the occluder 50, and the clamp 13 can release the ball head 51 after passing through the distal end of the storage sheath 11.

[0070] In some embodiments, the inner diameter of the storage sheath 11 is larger than the outer diameter of the delivery cable 12, and preferably there is a gap between the two to ensure that they can move freely axially. The storage sheath 11 preferably adopts a multi-layer structure, including an inner layer, a braided layer, and an outer layer. Reinforcement ribs can also be further provided on the inner or outer side of the braided layer as needed, so that the storage sheath 11 can simultaneously provide radial rigidity and axial flexibility to avoid squeezing the delivery cable 12, thereby preventing the two from moving relative to each other. Specifically, the multi-layer structure and material of the storage sheath 11 can be selected from any embodiment of the multi-layer sheath tube disclosed in the prior art, and are not limited here.

[0071] like Figure 3 — Figure 6 In some embodiments, a distal sleeve 111 is further provided at the distal end of the receiving sheath 11. The inner diameter of the distal sleeve 111 is larger than that of the receiving sheath 11 and preferably matches the outer diameter of the clamping jaws 13 holding the ball head 51, thereby accommodating the clamping jaws 13 and the ball head 51. Specifically, the distal sleeve 111 can be made of metal or other composite materials to provide sufficient structural strength and radially limit the clamping jaws 13 holding the ball head 51.

[0072] In some embodiments, the clamping jaws 13 are provided with a clamping groove configured as a hollow, curved frame whose curved profile matches the threadless ball head 51. Inwardly facing protrusions or barbs may be provided at both ends of the clamping groove to ensure stable grip of the ball head 51. In some embodiments, the clamping jaws 13 are made of shape-memory metal and heat-set into an "eight"-shaped, open structure to ensure that the clamping jaws 13 automatically open and release the ball head 51 after passing through the distal sleeve 111.

[0073] refer to Figure 4 — Figure 5 、 Figure 8 — Figure 10 In some embodiments, the flip rod portion 30 includes a flip rod body 31 and a flip rod connector 32. The flip rod body 31 is rotatably connected to the handle portion 20. The distal end of the flip rod connector 32 is connected to the proximal end of the storage sheath 11. The proximal end of the flip rod connector 32 is eccentrically connected to the flip rod body 31. The rotation of the flip rod body 31 can drive the axial movement of the flip rod connector 32, and finally drive the axial movement of the storage sheath 11 to store or release the clamp 13, thereby realizing the connection or release of the occluder 50.

[0074] In some embodiments, the flip rod body 31 includes a first support ring 311 and a second support ring 312. Figure 8 and Figure 9The first support ring 311 and the second support ring 312 are respectively arranged on both sides of the handle part 20. The first support ring 311 and the second support ring 312 are both columnar and located on the same central axis. The central axes of the two are perpendicular to the axis of the handle part 20 to ensure that the flip rod body 31 can be flipped relative to the handle part 20; the flip rod body 31 also has an operating part 316 for medical personnel to manually operate to flip it.

[0075] like Figure 10 In some embodiments, a pair of transmission rods 321 are provided at the proximal end of the flip rod connecting member 32, and the two transmission rods 321 are arranged in parallel. The proximal ends of the two transmission rods 321 are provided with fixed columns 322, and the axes of the fixed columns 322 are perpendicular to the axes of the transmission rods 321. The two fixed columns 322 are located on the same central axis; adapted thereto, the first support ring 311 and the second support ring 312 are both provided with fixed column receiving grooves 313 and transmission rod through grooves 314. When the flip rod body 31 is flipped, the fixed columns 322 can rotate in the fixed column receiving grooves 313, and the transmission rod 321 can rotate in the transmission rod through grooves 314.

[0076] In some embodiments, the fixed column receiving groove 313 is configured as a cylindrical groove and is arranged on the outer peripheral side of the first support ring 311 and / or the second support ring 312. The fixed column receiving groove 313 is arranged parallel to the axis of the first support ring 311 and / or the second support ring 312, and the fixed column receiving groove 313 is arranged coaxially with the fixed column 322; in some embodiments, the transmission rod through groove 314 is configured as a fan-shaped groove, and the transmission rod through groove 314 is arranged perpendicular to the axis of the first support ring 311 and / or the second support ring 312. When the first support ring 311 and the second support ring 312 drive the fixed column 322 to achieve eccentric rotation, the transmission rod through groove 314 rotates relative to the transmission rod 321.

[0077] In some embodiments, the transmission rod through slot 314 intersects and communicates with the middle portion of the fixing column receiving slot 313 .

[0078] refer to Figure 12Specifically, the lifting / releasing process of the tilting lever 30 involves rotation around the axis of the first support ring 311 / second support ring 312. The fixed post receiving groove 313 is located off-center on the first support ring 311 / second support ring 312, and the fixed post receiving groove 313 undergoes angular displacement as the first support ring 311 / second support ring 312 rotates. The product of the distance R from the axis of the fixed post receiving groove 313 to the axis of the first support ring 311 / second support ring 312 and the sine of the tilting angle α is the axial movement distance L of the fixed post receiving groove 313 during the tilting process of the tilting lever 30, i.e., L = Rsinα. The fixed post 322 is embedded in the fixed post receiving groove 313, allowing the tilting lever connector 32 to move axially as the tilting lever 30 rotates, thereby enabling the receiving sheath 11 to receive and release the ball head 51.

[0079] In some embodiments, a steel cable connector 21 is provided in the handle portion 20. Figure 4 — Figure 5 、 Figure 7 The distal end of the flip rod connector 32 is provided with a limiting rod 323, and the limiting rod 323 is arranged perpendicular to the axis of the conveying steel cable 12. The conveying steel cable 12 passes through the limiting rod 323 and is connected to the steel cable connector 21, and a flip rod spring 33 is provided between the limiting rod 323 and the steel cable connector 21; in some embodiments, a spring receiving hole 3231 is provided in the middle of the proximal end of the limiting rod 323, and the two ends of the flip rod spring 33 are respectively abutted against the spring receiving hole 3231 and the steel cable connector 21, and the distal middle part of the limiting rod 323 is connected to the proximal end of the storage sheath 11, and the proximal end of the storage sheath 11 can be further provided with a proximal sleeve 112.

[0080] Specifically, the lever spring 33 can be compressed or stretched as the lever portion 30 is turned over, to ensure that the clamping claw 13 is always received in the distal sleeve 111 of the receiving sheath 11 when the lever portion 30 is not turned over.

[0081] refer to Figure 4 — Figure 5 , Figure 11 — Figure 16 In some embodiments, the occluder delivery device is further provided with a locking portion 40, which is connected to the handle portion 20 and can be engaged with or separated from the flip rod portion 30. When the locking portion 40 is engaged with the flip rod portion 30, the locking portion 40 circumferentially limits the flip rod portion 30 to restrict the flipping of the flip rod portion 30. When the locking portion 40 is separated from the flip rod portion 30, the flip rod portion 30 can flip freely.

[0082] In some embodiments, meshing teeth 315 are further provided on the inner side of the first support ring 311 or the second support ring 312, and the meshing teeth 315 are in a gear-like structure; the locking portion 40 includes a locking rod 41 passed through the handle portion 20, and a locking tooth 42 is provided at the distal end of the locking rod 41, and the locking tooth 42 is in a single-tooth structure. The locking tooth 42 can engage with the meshing teeth 315 to circumferentially limit the flip rod portion 30.

[0083] In some embodiments, the proximal end of the locking rod 41 passes through the outside of the handle portion 20, and the proximal end of the locking rod 41 is provided with a raised limiting ring 411, and a locking spring 43 is provided between the limiting ring 411 and the handle portion 20, and the distal end of the locking spring 43 abuts against the handle portion 20, and the proximal end of the locking spring 43 abuts against the limiting ring 411. Under the elastic force of the locking spring 43, the meshing relationship between the locking tooth 42 and the meshing tooth 315 can be maintained, so that the flipping rod portion 30 cannot be flipped in an unlocked state. Only when the proximal end of the locking rod 41 is manually pressed to apply an axial external force pointing to the center of the handle portion 20, can the locking portion 40 unlock the flipping rod portion 30. After unlocking, the clamping jaws 13 can be manually opened or stored, so that the occluder 50 is not released non-subjectively during the transportation process, thereby improving the safety of the surgical operation.

[0084] In this embodiment, the occluder delivery device is in an initial natural state, and the locking rod 41 of the locking portion 40 is in a proximal-boosted state. At this time, the locking teeth 42 and the engaging teeth 315 engage with each other and lock the flipping rod portion 30. The flipping rod portion 30 cannot be flipped up and lifted, and the clamping claw 13 is not exposed from the distal sleeve 111. Figure 13 、 Figure 14 .

[0085] When the proximal end of the locking rod 41 is pressed, the locking teeth 42 are separated from the engaging teeth, and the lever portion 30 is unlocked. Figure 15 、 Figure 16 At this time, the lever 30 is flipped upward and lifted, the receiving sheath 11 moves axially toward the proximal end, the clamping claw 13 is exposed and opens in an "eight" shape to receive the ball head 51 of the occluder 50. During operation, the locking rod 41 is released and pressed, and the locking teeth 42 and the meshing teeth 315 are engaged again. Figure 13 、 Figure 14 The turning rod portion 30 is locked and cannot be turned over, so that the operator can place the ball head 51 in the clamping jaw 13 to prevent the clamping jaw 13 from being accommodated therein due to the movement of the receiving sheath 11 during operation.

[0086] After the ball head 51 of the occluder 50 is engaged by the clamping claw 13, the distal end of the locking rod 41 is pressed, the locking teeth 42 are separated from the engaging teeth, and the lever portion 30 is unlocked again. Figure 15 、 Figure 16By flipping the lever portion 30 downward, the clamping claw 13 and the ball head 51 are received in the distal sleeve 111. At this time, the locking lever 41 is released and the locking teeth 42 are engaged with the meshing teeth 315 again. Figure 13 、 Figure 14 , the turning rod portion 30 is locked and cannot be turned over.

[0087] When delivering the occluder 50, the occluder delivery device together with the occluder 50 is delivered to the target position in the body along the sheath, and the occluder 50 is adjusted to a suitable release angle. When the occluder 50 needs to be released subjectively, the distal end of the locking rod 41 is pressed, and the locking teeth 42 are separated from the engaging teeth. Figure 15 、 Figure 16 , the lever portion 30 is unlocked, and after the lever portion 30 is flipped upward and lifted, the sheath 11 is retracted, the clamping claw 13 is exposed and automatically opens in an "eight" shape and releases the ball head 51 to complete the release operation of the occluder 50.

[0088] After the occluder 50 is released, the locking portion 40 is kept pressed and the lever portion 30 is flipped downward to release the locking portion. After the clamping claw 13 is stored in the distal sleeve 111, the distal end of the locking lever 41 is released, and the locking teeth 42 of the locking portion 40 engage with the meshing teeth 315 of the lever body 31. Figure 13 、 Figure 14 The clamping jaws 13 are locked into the distal sleeve 111 and the delivery device is moved out of the body along the sheath, thus completing the implantation process of the occluder 50 .

[0089] Example 2

[0090] This embodiment 2 provides an occluder delivery system, including the occluder delivery device and the occluder 50 described in the above embodiment 1. The technical features already recorded in the above embodiment 1 are naturally inherited in this embodiment and will not be repeated.

[0091] In some embodiments, the proximal end of the occluder 50 in this embodiment is provided with a delivery connector, which is releasably connected to the clamp 13 of the occluder delivery device; in some further embodiments, the delivery connector is configured as a non-threaded ball head 51.

[0092] In this embodiment, the specific operation of the occluder delivery system is the same as that of the above-mentioned embodiment 1, and will not be repeated here.

[0093] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are protected by the present invention.

Claims

1. An occluder delivery device, characterized in that: It includes a conveying part, a handle part and a turning rod part; The delivery portion includes a receiving sheath and a delivery cable and a clamping claw disposed therein. The receiving sheath is capable of axially moving relative to the delivery cable. The proximal end of the delivery cable is passed through the handle portion. The distal end of the delivery cable is connected to the clamping claw. The clamping claw is used to clamp the delivery connector of the occluder. The clamping claw can release the delivery connector after passing through the distal end of the receiving sheath. The flip rod portion is flippably arranged on the handle portion, and the flip rod portion is connected to the proximal end of the storage sheath. The flipping of the flip rod portion can drive the axial movement of the storage sheath.

2. The occluder delivery device according to claim 1, characterized in that: The turning rod portion comprises: - a lever body, the lever body being rotatably connected to the handle portion; - a flip rod connecting member, wherein the distal end of the flip rod connecting member is connected to the proximal end of the storage sheath, and the proximal end of the flip rod connecting member is eccentrically connected to the flip rod body; The rotation of the flip rod body can drive the axial movement of the flip rod connecting piece.

3. The occluder delivery device according to claim 2, characterized in that: The flip rod body includes a first supporting ring and a second supporting ring that are arranged opposite to each other. The first supporting ring and the second supporting ring are both columnar and are respectively arranged on both sides of the handle.

4. The occluder delivery device according to claim 3, characterized in that: A pair of transmission rods are provided at the proximal end of the flip rod connecting member. The transmission rods are arranged axially in parallel. The proximal ends of the two transmission rods are each provided with a fixing column. The axis of the fixing column is perpendicular to the axis of the transmission rod. The two fixing columns are coaxially arranged. The first support ring and the second support ring are both provided with a fixing column receiving groove and a transmission rod through groove. The fixing column can rotate in the fixing column receiving groove, and the transmission rod can rotate in the transmission rod through groove.

5. The occluder delivery device according to claim 4, characterized in that: The fixing column receiving groove is configured as a cylindrical groove and is provided on the outer circumference of the first support ring and / or the second support ring. The fixing column receiving groove is provided parallel to the axis of the first support ring and / or the second support ring.

6. The occluder delivery device according to claim 5, characterized in that: The transmission rod through groove is configured as a fan-shaped groove, and the transmission rod through groove is arranged perpendicular to the axis of the first support ring and / or the second support ring.

7. The occluder delivery device according to claim 6, characterized in that: The transmission rod through groove intersects and communicates with the middle portion of the fixing column receiving groove.

8. The occluder delivery device according to claim 2, characterized in that: A steel cable connector is provided in the handle portion, a limiting rod is provided at the distal end of the flip rod connector, the conveying steel cable passes through the limiting rod and is connected to the steel cable connector, and a flip rod spring is provided between the limiting rod and the steel cable connector.

9. The occluder delivery device according to claim 8, characterized in that: The limiting rod is arranged perpendicular to the axis of the conveying steel cable, and a spring receiving hole is provided in the middle of the limiting rod. The two ends of the turning rod spring are respectively in contact with the spring receiving hole and the steel cable connector.

10. The occluder delivery device according to claim 2, characterized in that: It also includes a locking portion, which is connected to the handle portion and can be engaged with or separated from the flip rod portion; When the locking portion is engaged with the flip rod portion, the locking portion limits the flip rod portion in a circumferential direction to restrict the flipping of the flip rod portion; when the locking portion is separated from the flip rod portion, the flip rod portion can flip freely.

11. The occluder delivery device according to claim 10, characterized in that: The turning rod body is provided with meshing teeth; The locking portion includes a locking rod passing through the handle portion, and a locking tooth is provided at the distal end of the locking rod. The locking tooth can be engaged with the engaging tooth to circumferentially limit the flip rod portion.

12. The occluder delivery device according to claim 11, characterized in that: The proximal end of the locking rod passes through the outside of the handle part, and a raised limiting ring is provided at the proximal end of the locking rod. A locking spring is provided between the limiting ring and the handle part, and the distal end of the locking spring abuts against the handle part, and the proximal end of the locking spring abuts against the limiting ring. The locking spring is used to maintain the meshing relationship between the locking tooth and the meshing tooth.

13. The occluder delivery device according to claim 1, characterized in that: The distal end of the storage sheath is provided with a distal sleeve, and the distal sleeve is used to accommodate the clamping claw and the delivery connecting piece.

14. The occluder delivery device according to claim 1, characterized in that: The clamping jaws are provided with clamping grooves, the contour of which matches the non-threaded conveying connection piece.

15. An occluder delivery system, characterized in that: The occluder delivery device comprises the occluder according to any one of claims 1 to 14, and further comprises an occluder.

16. The occluder delivery system according to claim 15, characterized in that: The proximal end of the occluder is provided with a delivery connector, and the delivery connector is releasably connected to the occluder delivery device; The delivery connection piece is configured as a non-threaded ball head.

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