Implant pushing device and implant pushing system

Abstract

The present invention discloses an implant pushing device, comprising: a pushing component, a receiving piece, and at least one fixing wire. The pushing component has a proximal end and a distal end. The receiving piece is arranged at the distal end, and the receiving piece is provided with a receiving groove, and the receiving groove is used to receive the protruding structure of the implant; the fixing wire is used to be passed through the implant, and the free end of the fixing wire extends and is fixed at the proximal end. By receiving the protruding structure on one side of the umbrella-shaped structure of the implant through the receiving groove of the receiving piece, the umbrella-shaped structures of implants of different models can be fixed to the distal end of the pushing component in a winding manner through the fixing wire, so that different models of occluders can be matched with the implant pushing device provided by the present application, which is convenient for medical staff to use and saves costs. At the same time, because the fixing wire has a certain flexibility, the implant can be tilted at a certain angle according to the shape of the occlusion part of different patients during the release process, so as to achieve a better occlusion effect.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an implant pushing device and an implant pushing system. Background Art

[0002] Interventional therapy is the use of catheter technology to place various materials and instruments into the heart, arteries, veins, and other parts of the human body to treat cardiovascular diseases. For example, a vena cava filter is placed in the patient's superior and inferior vena cava through catheter intervention to capture dislodged thrombi and prevent them from moving up the vena cava system to the heart and causing pulmonary embolism. Or in the treatment of structural heart disease, such as atrial septal defect closure, patent foramen ovale closure, ventricular septal defect closure, and patent ductus arteriosus closure, in vascular interventional procedures, the corresponding occluder needs to be placed in the corresponding defect site. The implantation of such devices requires a push device to deliver the implant to various parts of the human body, and then the push device is separated from the implant.

[0003] However, due to different treatment sites and differences in occluders produced by different manufacturers, there are different connection methods between the pushing device and the occluder. This requires different pushing devices to match different occluders, which is inconvenient for medical staff to use. Summary of the Invention

[0004] The present application aims to provide an implant pushing device and an implant pushing system suitable for implants of different models and manufacturers.

[0005] According to a first aspect of the present application, the present application provides an implant pushing device, comprising:

[0006] a pushing assembly having a proximal end and a distal end;

[0007] a receiving member, the receiving member being disposed at the distal end of the pushing assembly, the receiving member being provided with a receiving groove for receiving the protruding structure of the implant;

[0008] At least one fixing wire is used to be passed through the implant, and a free end of the fixing wire extends and is fixed to the proximal end of the pushing component.

[0009] As a further solution of the implant pushing device provided in the present application, the pushing component is provided with a through hole, and the number of the through hole is at least one; or

[0010] The pushing component is provided with a through hole, and the through hole forms any one of a straight, cross or 'M' shaped hole structure on the pushing component.

[0011] As a further solution of the implant pushing device provided in the present application, the pushing assembly includes a handle, a pushing drive module, an inner cylinder and an outer cylinder, the handle being provided with a mounting channel along its length direction, one end of the outer cylinder being fixed to the mounting channel, the inner cylinder being slidably arranged inside the outer cylinder, and a preset gap being provided between the inner cylinder and the outer cylinder, the receiving piece being provided at the other end of the inner cylinder away from the handle, the pushing drive module being at least partially installed in the mounting channel and connected to the inner cylinder; the inner cylinder is also provided with at least one through-hole at a preset distance from the receiving piece; the fixing line is passed through the through-hole and the inner cavity of the inner cylinder and connected to the pushing drive module; the pushing drive module can drive the inner cylinder to slide back and forth between a clamping position and a release position along the axial direction of the outer cylinder, and in the clamping position, the outer cylinder moves to abut against the receiving piece and clamps the fixing line with the inner cylinder; in the release position, the outer cylinder moves out and away from the receiving piece.

[0012] As a further solution of the implant pushing device provided in the present application, the pushing drive module includes a connecting member and a pushing member, one end of the connecting member is connected to the inner cylinder, the pushing member is connected to the other end of the connecting member, and part of the pushing member extends to the outside of the mounting channel.

[0013] As a further solution of the implant pushing device provided in the present application, the pushing member is further provided with a handle at one end away from the connecting member;

[0014] and / or

[0015] The preset gap is 0.02mm-0.3mm;

[0016] and / or

[0017] The preset distance is 1cm-5cm;

[0018] and / or

[0019] A fixing seat is provided inside the installation channel, and one end of the outer cylinder is fixed to the fixing seat.

[0020] As a further solution of the implant pushing device provided in the present application, the pushing assembly includes a pushing cylinder, the receiving piece is arranged at one end of the pushing cylinder, and the receiving piece is also provided with a connecting hole connected to the inner cavity of the pushing cylinder; the fixing line extends through the connecting hole and the inner cavity of the pushing cylinder and is fixed to the other end of the pushing cylinder.

[0021] As a further solution of the implant pushing device provided in the present application, a fixing piece is provided at the other end of the pushing cylinder, and the free end of the fixing line passes through the inner cavity of the pushing cylinder to the other end of the pushing cylinder and is fixed to the fixing piece.

[0022] As a further solution of the implant pushing device provided in the present application, the fixing member is provided with at least one fixing slot, and the free end of the fixing wire is detachably connected to the fixing slot.

[0023] As a further solution of the implant pushing device provided in the present application, a coil spring is wound around the outer surface of the pushing cylinder.

[0024] As a further solution of the implant pushing device provided in the present application, a winding groove is provided on the outer surface of the pushing cylinder along the winding direction of the winding spring, and the winding spring is wound in the winding groove.

[0025] As a further solution of the implant pushing device provided in the present application, the pushing assembly includes a pushing rod, the receiving piece is arranged at one end of the pushing rod along its length direction, and a stepped groove is also provided on the pushing rod at a position preset distance from the receiving piece, and the stepped groove is used to wind and accommodate the fixing wire.

[0026] As a further solution of the implant pushing device provided in the present application, the pushing rod or the receiving member is further provided with a through hole;

[0027] and / or

[0028] The pushing rod is further provided with a hand-held portion at one end away from the receiving member;

[0029] and / or

[0030] The preset spacing is 5cm-25cm;

[0031] and / or

[0032] The inner diameter of the receiving groove is 1mm-5mm.

[0033] As a further solution of the implant pushing device provided in the present application, the receiving member includes a first ring sleeve and a second ring sleeve, the first ring sleeve is arranged on the distal end of the pushing component, and the second ring sleeve is arranged on the first ring sleeve, and the first ring sleeve, the second ring sleeve and the distal end of the pushing component enclose the receiving groove.

[0034] According to a second aspect of the present application, the present application provides an implant pushing system, comprising the implant pushing device described above, and an implant;

[0035] The implant is detachably connected to the implant pushing device, and the implant is an occluder.

[0036] According to the implant pushing device of the above embodiment, the receiving groove of the receiving member accommodates the protruding structure on one side of the umbrella-shaped structure of the implant, and the umbrella-shaped structures of different implant models can be fixed to the distal end of the pushing assembly by a fixing wire. Therefore, the implant pushing device provided by this application can be used with occluders of different models and manufacturers, improving the compatibility of the pushing device, facilitating use by medical personnel, and saving costs. At the same time, because the fixing wire has a certain degree of flexibility, the implant can be tilted at a certain angle to adapt to the shape of the occlusion site of different patients during the release process, thereby achieving a better occlusion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A cross-sectional view of a first embodiment of the implant pushing device provided by the present invention;

[0038] Figure 2 for Figure 1 Cross-section view in the AA direction;

[0039] Figure 3 The implant pushing device provided by the present invention is a three-dimensional Figure 1 ;

[0040] Figure 4 for Figure 3 A partial enlarged schematic diagram of point B in the middle;

[0041] Figure 5 The implant pushing device provided by the present invention is a three-dimensional Figure 2 ;

[0042] Figure 6 for Figure 5 A partial enlarged schematic diagram of point C in the middle;

[0043] Figure 7 A schematic diagram of the implant pushing device provided by the present invention in a first embodiment in a released state;

[0044] Figure 8 for Figure 7 A partial enlarged schematic diagram of point D in the middle;

[0045] Figure 9 A schematic diagram of the implant pushing device provided by the present invention in a first embodiment in a tightened state;

[0046] Figure 10 for Figure 9 A partial enlarged schematic diagram of point E in the middle;

[0047] Figure 11A schematic structural diagram of a second embodiment of the implant pushing device provided by the present invention;

[0048] Figure 12 A schematic diagram of the surface of a pushing cylinder of the implant pushing device provided by the present invention in a second embodiment;

[0049] Figure 13 Another structural schematic diagram of the implant pushing device provided by the present invention in the second embodiment of the pushing cylinder;

[0050] Figure 14 for Figure 13 Right view of;

[0051] Figure 15 A perspective view of a second embodiment of the implant pushing device provided by the present invention;

[0052] Figure 16 for Figure 15 A partial enlarged schematic diagram of point F in the middle;

[0053] Figure 17 for Figure 15 A partial enlarged schematic diagram of point G in the middle;

[0054] Figure 18 A cross-section of the implant pushing device provided by the present invention in the third embodiment Figure 1 ;

[0055] Figure 19 A cross-section of the implant pushing device provided by the present invention in the third embodiment Figure 2 ;

[0056] Figure 20 A perspective view of a third embodiment of the implant pushing device provided by the present invention;

[0057] Figure 21 Schematic diagram of the implant pushing device provided by the present invention cooperating with an implant in the third embodiment.

[0058] Reference numerals:

[0059] Pushing assembly 100, proximal end 101, distal end 102, mounting channel 103, fixing seat 104, handle 10, pushing drive module 11, connecting piece 111, pushing piece 112, handle 113, inner tube 12, through-hole 121, outer tube 13, pushing tube 14, winding groove 141, metal wire 142, fixing piece 15, fixing slot 151, winding spring 16, pushing rod 17, stepped groove 171, hand-held part 18, fixing structure 19, receiving piece 200, receiving slot 201, communicating hole 202, first ring sleeve 204, second ring sleeve 205, fixing line 300, implant 1000, umbrella-shaped structure 1001, protruding structure 1002. DETAILED DESCRIPTION

[0060] The present application is further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions. For those skilled in the art, it is not necessary to describe these related operations in detail. They can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0061] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various implementations, and the operational steps involved in each embodiment may be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for the purpose of clearly describing a particular embodiment and do not imply a required composition and / or sequence.

[0062] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0063] Among congenital heart diseases, patent foramen ovale, ventricular septal defect, atrial septal defect, and patent ductus arteriosus are the most common congenital heart malformations clinically. Occluders, as interventional implants, are widely used in the clinic to treat congenital heart diseases such as patent foramen ovale, atrial septal defect, ventricular septal defect, and patent ductus arteriosus. Their primary principle is to block the foramen ovale between the left and right atria, the "leak" between the left and right ventricles, the "leak" between the left and right atria, and the passage between the aorta and pulmonary artery. Congenital heart disease occluders are categorized as patent foramen ovale occluders, patent ductus arteriosus occluders, atrial septal defect occluders, and ventricular septal defect occluders.

[0064] For the above-mentioned different types of patent foramen ovale, patent ductus arteriosus occluders, atrial septal defect occluders and ventricular septal defect occluders, each occluder is usually connected to the pushing device in a different way. Usually, a rivet head is provided on the occluder, and the rivet head is connected to the pushing device through a thread. However, the rivet heads of different occluders are of different sizes. Therefore, the pushing device is not universal with different occluders and can only be used with one type of occluder; or the occluder structure produced by different manufacturers cannot be adapted to the pushing device of other manufacturers, resulting in poor product adaptability.

[0065] In response to the above problems, the present application provides an implant pushing device that uses a fixed wire to pass through the umbrella-disc structure of the occluder to adapt to different types of occluders, making it easier for medical staff to use and improving the utilization rate of the pushing device.

[0066] In the following embodiments, the implant is described using an occluder for treating congenital heart disease as an example. The basic structure of the occluder is an umbrella-shaped structure made of a superelastic nickel-titanium alloy with a polymer biofilm attached. The interior of the umbrella-shaped structure is filled with polyester or polytetrafluoroethylene. A rivet head is provided on one side of the umbrella-shaped structure, which is the protruding structure of the occluder.

[0067] See also Figures 1-10 As shown, the implant pushing device provided by the present application includes a pushing component 100 , a receiving member 200 and at least one fixing wire 300 .

[0068] Pushing assembly 100 has a proximal end 101 and a distal end 102. An operator (e.g., a medical professional) can operate pushing assembly 1000 to push implant 1000 to the patient's treatment site. Implant 1000 can be an occluder for treating common congenital heart diseases such as ventricular septal defect, atrial septal defect, and patent ductus arteriosus. In a specific embodiment, pushing assembly 1000 is required to push implant 1000 through a vein or artery to a site such as the ventricular septum, atrial septum, or ductus arteriosus.

[0069] The implant 1000 has an umbrella-like structure 1001 made of superelastic nickel-titanium alloy. The fixing wire 300 is used to be passed through the implant 1000. Specifically, the fixing wire 300 is passed through the umbrella-like structure 1001 of the implant 1000 and the implant 1000 is set at the distal end 102 of the pushing component 100.

[0070] The receiving piece 200 is arranged at the distal end 102 of the pushing component 100, and the receiving piece 200 is provided with a receiving groove 201. The implant 1000 also has a rivet head arranged on one side of the umbrella-shaped structure 1001, and the rivet head is formed as a protruding structure 1002. When the fixing line 300 is passed through the umbrella-shaped structure 1001 of the implant 1000 and the implant 1000 is set at the distal end 102 of the pushing component 100, the receiving groove 201 is used to accommodate the protruding structure 1002 of the implant 1000, that is, the protruding structure 1002 on one side of the umbrella-shaped structure 1001 of the implant 1000 is accommodated in the receiving groove 201, so that the implant 1000 can be stably set at the distal end 102 of the pushing component 100.

[0071] In the present application, the free end of the fixing line 300 extends to and is fixed to the proximal end 101 of the pushing assembly 100 .

[0072] The operator operates at the proximal end 101 of the push assembly 100 and places the implant 100 at the distal end 102 of the push assembly 100. The distal end 102 is the patient's lesion site, and the proximal end 101 and distal end 102 are distinguished by the end closer to the operator. In actual use, the operator manipulates the proximal end 101 of the push assembly 100 to push the implant 1000 to a location such as the ventricular septum, the atrial septum, or the ductus arteriosus via a vein or artery. The distal end 102 of the push assembly 100 is the end that extends through the vein or artery to the ventricular septum, the atrial septum, or the ductus arteriosus. After the fixing line 300 is passed through the umbrella-shaped structure 1001 of the implant 1000 and the implant 1000 is fixed to the distal end 102 of the pushing component 100, the free end of the fixing line 300 is fixed to the proximal end 101 of the pushing component 100. The operator can untie the fixing line 300 from the proximal end 101 of the pushing component 100 by operating the fixing line 300, that is, the fixation of the implant 100 can be loosened by pulling the fixing line 300, so that the implant 1000 is released in the ventricular septum, the atrial septum, the arterial catheter, etc., and at the same time, the pushing component 100 is withdrawn from the vein or artery in the opposite direction.

[0073] In this embodiment, the protruding structure 1002 on one side of the umbrella-shaped structure 1001 of the implant 1000 is accommodated by the receiving groove 201 of the receiving piece 200, and the umbrella-shaped structures 1001 of implants 1000 of different models can be fixed to the distal end 102 of the pushing component 100 in a threading manner through the fixing line 300, so that different models of occluders can be matched through the implant pushing device provided by the present application, so that medical staff can fix and implant different models of occluders into the patient's lesion site through one implant pushing device, which is convenient for medical staff to use and can also save costs.

[0074] At the same time, since the fixing wire 300 has a certain flexibility, the implant 1000 can be tilted at a certain angle according to the shape of the occlusion part of different patients during the release process to adjust the implantation angle of the implant 1000 to achieve a better occlusion effect.

[0075] In this embodiment, at least one through-hole 121 is further provided on the pushing assembly 100 . After being passed through the umbrella-shaped structure 1001 of the implant 1000 , the fixing wire 300 can be fixed to the proximal end 101 of the pushing assembly 100 through the through-hole 121 .

[0076] In one embodiment of the present application, a through hole 121 is provided on the pushing component 100, and the through hole 121 is formed on the pushing component 100 as any one of a straight, cross or M-shaped hole structure. In this way, after the fixing line 300 is passed through the through hole 121 and fixed to the proximal end 101 of the pushing component 100, the stability of the binding connection with the implant 1000 can be improved. Please refer to the subsequent embodiments for details.

[0077] See also Figures 1-10 As shown, in a first embodiment of the present application, a pushing assembly 100 includes a handle 10, a pushing drive module 11, an inner cylinder 12, and an outer cylinder 13. The handle 10 is provided with a mounting channel 103 along its length. One end of the outer cylinder 13 is fixed to the mounting channel 103, and the other end of the outer cylinder 13 extends to the outside of the handle 10. The inner cylinder 12 is reciprocally slidably inserted into the interior of the outer cylinder 13, and a preset gap is defined between the inner cylinder 12 and the outer cylinder 13. The receiving member 200 is provided at the other end of the inner cylinder 12 away from the handle 10. The pushing drive module 11 is at least partially installed in the mounting channel 103 and connected to the inner cylinder 12. In other words, both ends of the inner cylinder 12 extend to the outside of the ends of the outer cylinder 13 to facilitate the installation of the receiving member 200 and the pushing drive module 11. At least one through-hole 121 is provided on the inner cylinder 12 at a preset distance from the receiving member 200.

[0078] After being passed through the umbrella-shaped structure 1001 of the implant 1000 , the fixing wire 300 passes through the passing hole 121 and the inner cavity of the inner tube 12 and is connected to the pushing drive module 11 .

[0079] The push drive module 11 can drive the inner cylinder 12 to slide back and forth along the axial direction of the outer cylinder 13 between a clamping position and a release position. In the clamping position, the outer cylinder 13 moves to abut against the receiving member 200 and then to be located above the through-hole 121, so that the outer cylinder 13 and the inner cylinder 12 cooperate to clamp the fixing wire 300 passed through the through-hole 121. In the release position, the outer cylinder 13 moves out and away from the through-hole 121, thereby releasing the fixing wire 300.

[0080] In a specific embodiment, the fixing wire 300 is threaded through the umbrella-shaped structure 1001 of the implant 1000, and the free end of the fixing wire 300 is inserted into the insertion hole 121, passed through the inner lumen of the inner cylinder 12, and connected to the push drive module 11. When the push drive module 11 drives the inner cylinder 12 to move along the axial direction of the outer cylinder 13 to the clamping position, the outer cylinder 13 moves above the insertion hole 121 and cooperates with the inner cylinder 12 to clamp the fixing wire 300. Therefore, the fixing wire 300 can be used to fix the implant 1000, so that the push assembly 100 can be introduced into the ventricular septum, the atrial septum, or the ductus arteriosus through the vein or artery. When it is necessary to release the implant 1000, the free end of the fixing wire 300 can be untied from the push drive module 11 and the fixing wire 300 can be pulled to release the fixing wire 300 from the implant 1000.

[0081] In this embodiment, when one fixing wire 300 is used, one or two through-holes 121 may be provided on the inner tube 12; when one through-hole 121 is provided, the fixing wire 300 is connected to the push-driving module 11 through the one through-hole 121 after being passed through the umbrella-shaped structure 1001 of the implant 1000; when one fixing wire 300 is used and two through-holes 121 are provided on the inner tube 12, the two free ends of the fixing wire 300 are respectively passed through the umbrella-shaped structure 1001 of the implant 1000, and then respectively passed through the two through-holes 121 to be connected to the push-driving module 11; the two through-holes 121 pass through the transverse direction of the inner tube 12 to form a straight hole structure. When two fixing wires 300 are used, two or four through-holes 121 may be provided on the inner tube 12; when two through-holes are provided, the free ends of the two fixing wires 300 may be respectively passed through the two through-holes 121 and then respectively passed through the umbrella-shaped structure 1001 of the implant 1000, and then respectively passed through the two through-holes 121 to be connected to the pushing drive module 11; when two fixing wires are used and four through-holes 121 are provided on the inner tube, the two free ends of one fixing wire 300 are first respectively passed through the umbrella-shaped structure 1001 of the implant 1000, and then the two free ends of the other fixing wire 300 are respectively passed through the umbrella-shaped structure 1001 of the implant 1000 in a cross-shaped manner, and then the four free ends of the two fixing wires 300 are respectively passed through the four through-holes 121 to be connected to the pushing drive module 11; the four through-holes 121 respectively penetrate two transverse directions perpendicular to the inner tube 12, thereby forming a cross-shaped hole structure. When three fixing wires 300 are used, three or six threading holes 121 can be provided on the inner tube 12. After being threaded through the umbrella-shaped structure 1001 of the implant 100, the three fixing wires 300 can be connected to the push-drive module 11 through the three or six threading holes 121, respectively. The six threading holes can form a cross-shaped threading hole structure. It is understood that two or three fixing wires 300 can be threaded through the umbrella-shaped structure 1001 at different angles, thereby improving the stability of the implant 1000.

[0082] like Figure 3-Figure 6 As shown, Figure 3 and Figure 4 As shown in FIG, a fixing wire 300 is passed through the umbrella-shaped structure 1001 of the implant 1000. In this way, one or two through-holes 121 can be provided on the inner tube 12 at a predetermined distance from the receiving member 200. The two through-holes 121 penetrate the radial direction of the inner tube 12 to form a straight hole structure. Figure 5 and Figure 6As shown in FIG, two fixing wires 300 are passed through the umbrella-shaped structure 1001 of the implant 1000. Thus, two or four through-holes 121 can be provided on the inner tube 12 at a predetermined distance from the receiving member 200. The four through-holes 121 penetrate the radial direction of the inner tube 12 to form a cross-shaped hole structure. Figure 2 As shown, four through-holes 121 are provided on the inner tube 12 at a position at a preset distance from the receiving member 200 , and the four through-holes 121 are distributed in a circumferential array to form a cross-shaped hole structure.

[0083] Of course, three fixing wires 300 can also be threaded through the umbrella-shaped structure 1001 of the implant 1000. In this way, three or six through-holes 121 can be set on the inner tube 12 at a predetermined distance from the receiving member 200. The six through-holes 121 also penetrate the inner tube 12 in the radial direction to form a 'M'-shaped hole structure. Among the above different through-hole 121 structures, the 'I'-shaped hole structure formed by two through-holes 121 has a stronger connection stability than the hole structure of a single through-hole; the cross-shaped hole structure formed by four through-holes 121 has a stronger connection stability than the 'I'-shaped hole structure; and the 'M'-shaped hole structure formed by six through-holes 121 has a stronger connection stability than both the cross-shaped and 'I'-shaped hole structures. To enhance connection stability, a hole structure with more through-holes 121 can be selected.

[0084] like Figure 7-10 As shown, Figure 7 and Figure 8 FIG. 1 shows that the pushing drive module 11 drives the inner cylinder 12 to move to the release position along the axial direction of the outer cylinder 13. At this time, the outer cylinder 13 moves to a position away from the through hole 121. Figure 9 and Figure 10 The push drive module 11 drives the inner cylinder 12 to move to the clamping position along the axial direction of the outer cylinder 13. At this time, the outer cylinder 13 moves to abut against the receiving member 200, and then is located above the through hole 121, and cooperates with the inner cylinder 12 to clamp the fixing line 300.

[0085] In one embodiment of the present application, the preset gap between the inner cylinder 12 and the outer cylinder 13 is 0.02 mm-0.3 mm. The size of the preset gap depends on the size and shape of the fixing line 300. In this embodiment, if the gap is less than 0.02 mm, the fixing line 300 cannot be pressed tightly by the inner cylinder 12 and the outer cylinder 13, and if the gap is greater than 0.3 mm, it is impossible to ensure that the inner cylinder 12 slides so that the outer cylinder 13 is above the through-hole 121, thereby causing the problem of unstable clamping.

[0086] In this embodiment, the preset distance between the position where the through hole 121 is set on the inner tube 12 and the receiving member 200 is 1 cm-5 cm. If the preset distance is less than 1 cm, the distance that the outer tube 13 is advanced relative to the inner tube 12 will be too short, affecting the clamping of the fixing line 300. If the preset distance is greater than 5 cm, the exposed fixing line 300 will be too long, affecting the release of the implant 1000.

[0087] See also Figure 1 As shown, the pushing drive module 11 includes a connecting member 111 and a pushing member 112. One end of the connecting member 111 is connected to the inner cylinder 12, and the pushing member 112 is connected to the other end of the connecting member 111. In addition, part of the pushing member 112 extends to the outside of the installation channel 103, so that the operator can push or pull the inner cylinder 12 to slide back and forth between the clamping position and the release position along the axial direction of the outer cylinder 13 through the connecting member 111 by operating the part of the pushing member 112 extending to the outside of the installation channel 103.

[0088] In the present application, in order to facilitate the operator's operation, a handle 113 is further provided at the end of the pushing member 112 away from the connecting member 111. The operator can hold the handle 113 and push or pull the inner cylinder 12 to slide back and forth between the clamping position and the release position along the axial direction of the outer cylinder 13.

[0089] In one embodiment, the connecting member 111 and the pushing member 112 may be fixedly connected by threaded connection, welding, or the like.

[0090] To facilitate securing the outer cylinder 13 to the mounting channel 103, a fixing seat 104 is provided within the mounting channel 103, and one end of the outer cylinder 13 is fixed to the fixing seat 104. In a preferred embodiment, the fixing seat 104 is a hollow cylindrical structure or an annular structure, and the outer wall of one end of the outer cylinder 13 is fixed to the inner cavity of the hollow cylindrical structure or annular structure fixing seat 104.

[0091] See also Figures 11-17 As shown, in the second embodiment of the present application, the pushing assembly 100 includes a pushing cylinder 14, and the receiving member 200 is arranged at one end of the pushing cylinder 14. The receiving member 200 is also provided with a connecting hole 202 connected to the inner cavity of the pushing cylinder 14, so that the receiving groove 201 is connected to the inner cavity of the pushing cylinder 14. When the fixing line 300 is passed through the umbrella-shaped structure 1001 of the implant 1000, the fixing line 300 extends through the connecting hole 202 and the inner cavity of the pushing cylinder 14 and is fixed to the other end of the pushing cylinder 14, wherein one end of the pushing cylinder 14 is the distal end 102 of the pushing assembly 100, and the other end of the pushing cylinder 14 is the proximal end 101 of the pushing assembly 100.

[0092] To facilitate fixing the fixing line 300 at the other end of the pushing cylinder 14 , a fixing piece 15 is provided at the other end of the pushing cylinder 14 . The free end of the fixing line 300 passes through the inner cavity of the pushing cylinder 14 to the other end of the pushing cylinder 14 and is fixed to the fixing piece 15 .

[0093] In this embodiment, at least one fixing slot 151 is provided on the fixing member 15, and the free end of the fixing wire 300 is detachably connected to the fixing slot 151. In a preferred embodiment, the free end of the fixing wire 300 is wrapped around and bound to the fixing slot 151, so that the operator can easily untie it when the implant 1000 needs to be released.

[0094] In this application, if Figure 15-17 As shown, four fixing slots 151 can be provided on the fixing member 15 , and accordingly, two fixing wires 300 can be passed through the umbrella-shaped structure 1001 of the implant 1000 , and the free ends of the two fixing wires 300 extend and are fixed on the fixing slots 151 .

[0095] In one embodiment, a coil spring 16 is wound around the outer surface of the pushing tube 14 to enhance the bending resistance and twist control of the pushing tube 14 so as to facilitate its pushing along the vein or artery.

[0096] like Figure 12 As shown, in order to facilitate the winding of the coil spring 16 , a winding groove 141 is provided on the outer surface of the pushing cylinder 14 along the winding direction of the coil spring 16 , and the coil spring 15 is wound in the winding groove 141 to prevent it from falling off.

[0097] In one embodiment, if Figure 13-14 As shown, the pushing cylinder 14 can also be formed by 3-8 metal wires 142 twisted together, and the pushing cylinder 14 is formed by 3 metal wires 142 twisted together.

[0098] like Figures 18-21 As shown, in the third embodiment of the present application, the pushing assembly 100 includes a pushing rod 17, and the receiving piece 200 is arranged at one end of the pushing rod 17 along its length direction. A stepped groove 171 is also provided on the pushing rod 17 at a position preset distance from the receiving piece 200. In a preferred embodiment, the preset distance is 5cm-25cm, and the stepped groove 171 is used to wind and store the fixing line 300.

[0099] In a specific embodiment, after the fixing wire 300 is passed through the umbrella-shaped structure 1001 of the implant 1000, the free end of the fixing wire 300 is wrapped and stored in the stepped groove 171, and the push rod 17 can be sent into the sheath through the loader for release. Therefore, the stepped groove 171 serves to temporarily store the fixing wire 300, and the fixing wire 300 will not be entangled or knotted due to the large number of fixing wires 300 during the pushing process of the push rod, thereby affecting the fixation and untying of the fixing wire 300 at the proximal end, causing the implant 1000 to be unstable or difficult to release. After passing through the sheath, the free end of the fixing wire 300 extends and is fixed to the other end of the push rod 17 along its length direction, so that the operator can untie or fix it. Among them, one end of the push rod 17 is the distal end 102 of the push assembly 100, and the other end of the push rod 17 is the proximal end 101 of the push assembly 100.

[0100] In some embodiments, a fixing structure 19 can be provided at the other end of the push rod 17, and a fixing groove 191 can also be provided on the fixing structure 19 so that the free end of the fixing line 300 can be wrapped and fixed on the fixing groove 191; the fixing structure can also be a through hole, and the free end of the fixing line is passed through the through hole and then bound and fixed.

[0101] In this embodiment, if Figure 17 and Figure 18 As shown, the pushing rod 17 or the receiving member 200 is further provided with a through hole 121 . After the fixing wire 300 is passed through the umbrella-shaped structure 1001 of the implant 1000 , it can be passed through the through hole 121 and then wound in the stepped groove 171 for temporary storage.

[0102] In one embodiment of the present application, a handle 18 is provided at one end of the push rod 17 away from the receiving member 200 , so that the operator can hold and push the push rod 17 . A fixing structure 19 can be provided at the end of the handle 18 away from the push rod 17 .

[0103] In the above three embodiments, the inner diameter of the receiving groove 201 is 1 mm-5 mm. If the inner diameter is less than 1 mm, the protruding structure 1001 of the implant 1000 cannot be accommodated, and if the inner diameter is greater than 5 mm, it is difficult to enter the lesion site through the blood vessel.

[0104] In one embodiment of the present application, Figure 1 As shown, the receiving member 200 includes a first ring sleeve 204 and a second ring sleeve 205. The first ring sleeve 204 is sleeved on the distal end 102 of the pushing component 100, and the second ring sleeve 205 is sleeved on the first ring sleeve 204. The first ring sleeve 204, the second ring sleeve 205 and the distal end 102 of the pushing component 100 form a receiving groove 201.

[0105] Of course, in other embodiments, the receiving groove 201 may also be formed on the receiving piece 200 of the block structure, as long as the size of the receiving groove 201 meets the design requirements.

[0106] In summary, the implant pushing device provided by the present application, through the receiving groove of the receiving component, accommodates the protruding structure on one side of the umbrella-shaped structure of the implant. The umbrella-shaped structures of different implant models can be fixed to the distal end of the pushing component by winding the fixing wire. This allows the implant pushing device provided by the present application to match different models of occluders, facilitating their use by medical staff and saving costs. Furthermore, because the fixing wire has a certain degree of flexibility, the implant can be tilted at a certain angle during the release process to adapt to the shape of the occlusion site of different patients, thereby achieving a better occlusion effect.

[0107] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. An implant pushing device, characterized in that: include: a pushing assembly having a proximal end and a distal end; a receiving member, the receiving member being disposed at the distal end of the pushing assembly, the receiving member being provided with a receiving groove for receiving the protruding structure of the implant; at least one fixing wire, the fixing wire being used to be threaded through the implant, and the free end of the fixing wire extending and fixed to the proximal end of the pushing assembly; The pushing component is provided with a through hole, and the number of the through hole is at least one, or the pushing component is provided with a through hole, and the through hole forms any one of a straight, cross, or 'M'-shaped hole structure on the pushing component; The pushing assembly includes a handle, a pushing drive module, an inner cylinder and an outer cylinder, the handle is provided with a mounting channel along its length direction, one end of the outer cylinder is fixed to the mounting channel, the inner cylinder can be reciprocatingly slidably penetrated into the interior of the outer cylinder, and a preset gap is provided between the inner cylinder and the outer cylinder, the receiving piece is provided at the other end of the inner cylinder away from the handle, the pushing drive module is at least partially installed in the mounting channel and connected to the inner cylinder; the inner cylinder is at a preset distance from the receiving piece; the fixing line is passed through the through-hole and the inner cavity of the inner cylinder and is connected to the pushing drive module; the pushing drive module can drive the inner cylinder to slide reciprocatingly between a clamping position and a releasing position along the axial direction of the outer cylinder, and in the clamping position, the outer cylinder moves to abut against the receiving piece and clamps the fixing line with the inner cylinder; in the releasing position, the outer cylinder moves out and away from the receiving piece.

2. The implant pushing device according to claim 1, wherein: The pushing drive module includes a connecting member and a pushing member, one end of the connecting member is connected to the inner cylinder, the pushing member is connected to the other end of the connecting member, and a portion of the pushing member extends to the outside of the installation channel.

3. The implant pushing device according to claim 2, wherein: The pushing member is provided with a handle at one end away from the connecting member; and / or The preset gap is 0.02mm-0.3mm; and / or The preset distance is 1cm-5cm; and / or A fixing seat is provided inside the installation channel, and one end of the outer cylinder is fixed to the fixing seat.

4. The implant pushing device according to any one of claims 1 to 3, characterized in that: The receiving member includes a first ring sleeve and a second ring sleeve, the first ring sleeve is sleeved on the distal end of the pushing component, the second ring sleeve is sleeved on the first ring sleeve, and the first ring sleeve, the second ring sleeve and the distal end of the pushing component enclose the receiving groove.

5. An implant pushing device, characterized in that: include: a pushing assembly having a proximal end and a distal end; a receiving member, the receiving member being disposed at the distal end of the pushing assembly, the receiving member being provided with a receiving groove for receiving the protruding structure of the implant; at least one fixing wire, the fixing wire being used to be threaded through the implant, and the free end of the fixing wire extending and fixed to the proximal end of the pushing assembly; The pushing assembly includes a pushing cylinder, the receiving member is arranged at one end of the pushing cylinder, and the receiving member is further provided with a communication hole communicating with the inner cavity of the pushing cylinder; the fixing line extends through the communication hole and the inner cavity of the pushing cylinder and is fixed to the other end of the pushing cylinder; The other end of the pushing cylinder is provided with a fixing piece, and the free end of the fixing line passes through the inner cavity of the pushing cylinder to the other end of the pushing cylinder and is fixed to the fixing piece; The fixing member is provided with at least one fixing slot, and the free end of the fixing line is detachably connected to the fixing slot.

6. The implant pushing device according to claim 5, wherein: A coil spring is wound around the outer surface of the pushing cylinder.

7. The implant pushing device according to claim 6, wherein: The outer surface of the pushing cylinder is provided with a winding groove along the winding direction of the winding spring, and the winding spring is wound in the winding groove.

8. The implant pushing device according to any one of claims 5 to 7, characterized in that: The receiving member includes a first ring sleeve and a second ring sleeve, the first ring sleeve is sleeved on the distal end of the pushing component, the second ring sleeve is sleeved on the first ring sleeve, and the first ring sleeve, the second ring sleeve and the distal end of the pushing component enclose the receiving groove.

9. An implant pushing device, characterized in that: include: a pushing assembly having a proximal end and a distal end; a receiving member, the receiving member being disposed at the distal end of the pushing assembly, the receiving member being provided with a receiving groove for receiving the protruding structure of the implant; at least one fixing wire, the fixing wire being used to be threaded through the implant, and the free end of the fixing wire extending and fixed to the proximal end of the pushing assembly; The pushing assembly includes a pushing rod, the receiving piece is arranged at one end of the pushing rod along its length direction, and a stepped groove is further provided on the pushing rod at a position preset distance from the receiving piece, and the stepped groove is used to wind and accommodate the fixing line.

10. The implant pushing device according to claim 9, wherein: The pushing rod or the receiving piece is further provided with a through hole; and / or The pushing rod is further provided with a hand-held portion at one end away from the receiving member; and / or The preset spacing is 5cm-25cm; and / or The inner diameter of the receiving groove is 1mm-5mm.

11. The implant pushing device according to claim 9 or 10, characterized in that: The receiving member includes a first ring sleeve and a second ring sleeve, the first ring sleeve is sleeved on the distal end of the pushing component, the second ring sleeve is sleeved on the first ring sleeve, and the first ring sleeve, the second ring sleeve and the distal end of the pushing component enclose the receiving groove.

12. An implant pushing system, characterized in that: comprising the implant pushing device according to any one of claims 1 to 11, and an implant; The implant is detachably connected to the implant pushing device, and the implant is an occluder.

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