Surgical implant catching device

Abstract

The invention discloses a surgical implant catching device, and relates to the technical field of medical instruments. The surgical implant catching device comprises a first mounting tube and a plurality of first catching pieces, the first catching pieces are connected into the first mounting tube, each first catching piece is provided with a first catching sleeve which extends out of the far end of the first mounting tube and is used for being connected with an implant in a sleeving mode, and the first catching sleeves are arranged in the circumferential direction of the first mounting tube; and each first capturing sleeve is configured to be capable of acting between expansion and contraction. Compared with a single lantern ring mode in the prior art, the surgical implant catching device can reduce the catching difficulty, improve the catching efficiency, reduce the possibility of multiple catching operations, reduce damage to the inner wall of a lumen and improve the safety of taking out the implant.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a surgical implant capture device. Background Art

[0002] During interventional surgery, implants such as stents, filters or micro-detection devices need to be placed in various lumens of the human body. However, since foreign objects placed in the human body may trigger rejection reactions and may also produce side effects after long-term use, they often need to be removed.

[0003] In order to remove the implant, the related technology usually provides a hook or other connecting piece on the implant, and the implant is captured by cooperating with the above-mentioned connecting piece through a capture structure such as a single metal wire single loop inserted outside the human body, and the implant is contracted after the capture structure step to remove the implant.

[0004] The capture structure and capture method of this implant require multiple operations to achieve the connection between a single loop and the hook body, which not only has a low capture efficiency and is prone to damage the lumen, but also in some special lumens, due to the peristalsis of the human body, liquid flow, and the mismatch between the lumen size and the capture structure, the capture structure is easily tilted, further increasing the difficulty of capture and reducing the capture efficiency.

[0005] Therefore, how to efficiently and safely remove implants from the human lumen remains a problem that needs to be solved urgently. Summary of the invention

[0006] In view of the above-mentioned defects or deficiencies in the prior art, the present invention provides a surgical implant capture device.

[0007] An embodiment of the present invention provides a surgical implant capture device for removing an implant in a human body lumen. The surgical implant capture device includes a first mounting tube and a plurality of first capture members, wherein the plurality of first capture members are connected to the first mounting tube, each of the first capture members having a first capture sleeve extending from a distal end of the first mounting tube and being used to sleeve the implant, the plurality of first capture sleeves are arranged circumferentially around the first mounting tube, and each of the first capture sleeves is configured to be able to adjust its own circumference to move between expansion and contraction.

[0008] In some embodiments of the present invention, the surgical implant capture device includes a plurality of first catheters, which are at least partially installed in the first mounting tube and arranged along the circumference of the first mounting tube, and the first capture member has two first free ends, one of which is inserted into one of two adjacent first catheters, and the other first free end is inserted into the other of two adjacent first catheters, and the first capture member partially surrounds the first capture sleeve between the two adjacent first catheters.

[0009] In some embodiments of the present invention, the surgical implant capture device also includes a plurality of second capture members, wherein the plurality of second capture members are connected to the first mounting tube, the plurality of first capture members are arranged around the periphery of the plurality of second capture members, each of the second capture members has a second capture sleeve extending from the distal end of the first mounting tube and used to sleeve the implant, the plurality of second capture sleeves are arranged circumferentially around the first mounting tube, and each of the second capture sleeves is configured to be able to adjust its own circumference to move between expansion and contraction.

[0010] In some embodiments of the present invention, the surgical implant capture device includes a plurality of second catheters, which are at least partially connected to the first mounting tube and arranged along the circumference of the first mounting tube. The plurality of first catheters are arranged around the periphery of the plurality of second catheters, and the distance between the distal end of the second catheter and the distal end of the first mounting tube is greater than the distance between the distal end of the first catheter and the distal end of the first mounting tube. The second capture member has two second free ends, one of the two second free ends is passed through one of two adjacent second catheters, and the other of the two second free ends is passed through the other of two adjacent second catheters. The portion of the second capture member between the two adjacent second catheters surrounds the second capture sleeve.

[0011] In some embodiments of the present invention, multiple first ducts and multiple second ducts are alternately arranged along the circumference of the first mounting tube. After the first capture sleeve and the second capture sleeve are unfolded, along the radial direction of the first mounting tube, a portion of each of the first capture sleeves overlaps with a portion of one of its two circumferentially adjacent second capture sleeves or is arranged opposite to it, and another portion of each of the first capture sleeves overlaps with a portion of the other of its two circumferentially adjacent second capture sleeves or is arranged opposite to it.

[0012] In some embodiments of the present invention, the first conduit is provided with a first developing ring, and / or the second conduit is provided with a second developing ring.

[0013] In some embodiments of the present invention, at least one of the two first free ends extends out of the proximal end of the first catheter, and / or at least one of the two second free ends extends out of the proximal end of the second catheter.

[0014] In some embodiments of the present invention, the surgical implant capture device also includes a second mounting tube, which is inserted into the first mounting tube in a manner that allows it to move along the length direction of the first mounting tube, and the multiple first catheters are arranged around the second mounting tube, and the multiple second catheters are installed in the second mounting tube at circumferential intervals along the second mounting tube, and the second mounting tube is configured to be able to drive the second catheter to move along the length direction of the first mounting tube, so that the first capture sleeve and the second capture sleeve form a spacing along the length direction of the first mounting member.

[0015] In some embodiments of the present invention, the elasticity of the first capturing member is greater than the elasticity of the second capturing member.

[0016] In some embodiments of the present invention, the surgical implant capture device also includes an operating component, which is connected to the proximal end of the first mounting tube. The operating component includes an operating handle, a first operating member and a second operating member connected to the operating handle, the first operating member is connected to the first capture member and is used to adjust the circumference of the first capture sleeve, and the second operating member is connected to the second capture member and is used to adjust the circumference of the second capture sleeve.

[0017] The surgical implant capture device provided by the present invention has the following beneficial effects: By designing the surgical implant capture device to include a first mounting tube and multiple first capture members, multiple first capture sleeves of the multiple first capture members are arranged circumferentially around the first mounting tube, and each first capture sleeve can move between expansion and contraction. When docking with the hook body and other connecting members of the implant, the multiple contracted first capture sleeves are transported to a position close to the implant, and then the multiple first capture sleeves are expanded to form a capture structure surrounding the hook body and other connecting members. Then, by moving the multiple first capture sleeves again and contracting the multiple capture sleeves, at least one capture sleeve can be directly connected with the hook body. Compared with the single ring method in the related art, the capture difficulty can be reduced, the capture efficiency can be improved, the possibility of multiple capture operations can be reduced, the damage to the inner wall of the lumen can be reduced, and the safety of implant removal can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 It is a structural schematic diagram of a first surgical implant capture device provided in an embodiment of the present application at one viewing angle; Figure 2 is a schematic structural diagram of the first surgical implant capture device provided in an embodiment of the present application from another perspective; Figure 3 is a structural schematic diagram of the first surgical implant capture device provided in an embodiment of the present application at another viewing angle; Figure 4 1 is a schematic structural diagram of a first surgical implant capture device provided in an embodiment of the present application when both the first capture member and the second capture member are retracted; Figure 5 This is a schematic structural diagram of a first surgical implant capture device provided in an embodiment of the present application when the first capture member is deployed and the second capture member is retracted; Figure 6 It is a structural schematic diagram of the first surgical implant capture device provided in an embodiment of the present application when the first capture member and the second capture member are both deployed; Figure 7 It is a structural schematic diagram of the first surgical implant capture device provided in an embodiment of the present application when performing a capture operation in a lumen; Figure 8 is a schematic structural diagram of a second surgical implant capture device provided in an embodiment of the present application at one viewing angle; Fig. 9 is a schematic structural diagram of a second surgical implant capture device provided in an embodiment of the present application from another perspective; Fig.10 It is a structural schematic diagram of the second surgical implant capture device provided in an embodiment of the present application when performing a capture operation in a lumen; Fig.11 is a schematic structural diagram of a third surgical implant capture device provided in an embodiment of the present application from another perspective; Fig.12 It is a schematic structural diagram of the third surgical implant capture device provided in an embodiment of the present application when performing a capture operation in a lumen; Fig.13 It is a structural schematic diagram of the fourth surgical implant capture device provided in an embodiment of the present application when performing a capture operation in a lumen; Fig.14 It is a structural schematic diagram of the fourth surgical implant capture device provided in an embodiment of the present application when performing a capture operation in a lumen; Fig.15 It is a schematic diagram of the connection between two adjacent first conduits and a first capture member provided in an embodiment of the present application.

[0019] The reference numerals are as follows: 10. First mounting tube; 20. First capturing member; 21. First capturing sleeve; 22. First free end; 30. First catheter; 40. Second capturing member; 41. Second capturing sleeve; 50. Second catheter; 60. Second mounting tube; 70. Operating assembly; 71. Operating handle; 72. First operating member; 73. Second operating member; 80. First developing ring; 90. Second developing ring; 100. Lumen; 200. Insert; 210. Hook body. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0021] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention are also intended to include plural forms, unless the context clearly indicates other meanings.

[0022] It should be understood that although the terms first, second, third, etc. may be used to describe the acquisition modules in the embodiments of the present invention, the acquisition modules should not be limited to these terms. These terms are only used to distinguish the acquisition modules from each other.

[0023] The word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrases "if it is determined" or "if (stated condition or event) is detected" may be interpreted as "when it is determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)", depending on the context.

[0024] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present invention are described at the angles shown in the drawings and should not be understood as limiting the embodiments of the present invention. In addition, in the context, it should also be understood that when it is mentioned that an element is formed "on" or "under" another element, it can not only be formed directly "on" or "under" another element, but also be formed "on" or "under" another element indirectly through an intermediate element.

[0025] With the advancement of medical technology, minimally invasive interventional treatments have been widely used, such as implanting implants (such as stents, filters or micro-detection devices) in various lumens, which effectively solves many surgical problems and significantly reduces the pain of patients. However, implants may cause rejection reactions in the human body, and long-term use can lead to side effects such as drug restrictions and skin crawling caused by foreign body reactions, which further narrows the dilated blood vessels and increases the risk of new blockages.

[0026] Therefore, in recent years, it has become a treatment trend to remove the implanted object after minimally invasive surgery. In order to facilitate the removal of the implant, a hook or threaded connector is set at one end of the implant, and the single metal wire single ring of the capture device cooperates with it to achieve contraction and removal. However, the above-mentioned single ring capture device is quite difficult to capture the connector, and often requires multiple operations, which increases the risk of damage to the blood vessel wall, may cause local bleeding, and threaten brain health.

[0027] In addition, for implants placed in other lumens (such as the intestine, urethra, or bile duct), due to factors such as peristalsis, fluid flow, and mismatched lumen sizes, the implants may tilt, further increasing the difficulty of capture, prolonging the operation time, and increasing the risk of damage to the lumen wall. Therefore, how to safely and effectively remove implants in human lumens remains an important issue that needs to be resolved.

[0028] In view of this, the present embodiment provides a surgical implant capture device, which solves the above-mentioned technical problem by configuring a plurality of retractable circumferentially distributed capture sleeves.

[0029] The following is combined with Figure 1-15 The surgical implant capturing device of this embodiment is introduced.

[0030] Combined with Figure 1-3 As shown, an embodiment of the present application provides a surgical implant 200 capture device for removing an implant 200 in a human lumen 100. The implant 200 may be a stent, a filter, or a micro-detection device, etc., which are structural components placed in the human lumen 100 through interventional surgery, and these are not listed one by one in this embodiment.

[0031] The surgical implant 200 capture device provided in this embodiment includes a first mounting tube 10 and a plurality of first capture members 20. The first mounting tube 10 is a tubular member with a certain structural length. The first mounting tube 10 may be made of a polymer material such as plastic.

[0032] The first mounting tube 10 has a proximal end and a distal end, wherein the "proximal end" refers to the end closer to the operator during the process of capturing the inserted object 200 ( Figure 1 The lower end of Figure 4-6The “distal end” refers to the end that is away from the operator and close to the implant 200 during the process of capturing the implant 200 ( Figure 1 The upper end of Figure 4-6 left end of the ).

[0033] A plurality of first capture members 20 are installed in the first mounting tube 10. The first capture members 20 may be connected to the first mounting tube 10 or may not be connected to the first mounting tube 10. Whether the first capture member 20 is connected to the first mounting member is determined by the contraction form of the first capture sleeve 21 of the first capture member 20. For example, the first capture member 20 is provided with a plug hole at one end, and the other end is inserted into the plug hole, so as to surround the first capture sleeve 21 described below. By adjusting the other end, the circumference of the first capture sleeve 21 can be adjusted. At this time, the end of the first capture sleeve 21 with the plug hole can be connected to the first mounting tube 10 (this embodiment is not shown in the figure).

[0034] Another example Figure 1 The first capture member 20 shown in the figure is respectively inserted into two first conduits 30 described below. When the first capture member 20 is used to enclose the first capture sleeve 21 between the two first conduits 30, the first capture member 20 can be directly placed in the first conduit 30 and can be moved in the first conduit 30 along the length direction of the first conduit 30. At this time, the first capture member 20 is not directly connected to the first mounting tube 10, but is only located in the first mounting tube 10.

[0035] In this embodiment, a first capture sleeve 21 is provided at the distal end of each first capture member 20. The first capture sleeve 21 extends out of the distal end of the first mounting tube 10 and is used to receive the first capture sleeve 21 of the inserted object 200. A plurality of first capture sleeves 21 are arranged circumferentially around the first mounting tube 10, and each first capture sleeve 21 is configured to be able to adjust its own circumference so that the first capture sleeve 21 can move between expansion and contraction.

[0036] By designing the capture device of the surgical implant 200 to include a first mounting tube 10 and a plurality of first capture members 20, a plurality of first capture sleeves 21 of the plurality of first capture members 20 are arranged circumferentially around the first mounting tube 10, and each first capture sleeve 21 can move between expansion and contraction. When docking with the hook body 210 and other connecting members of the implant 200, the contracted plurality of first capture sleeves 21 are transported to the position of the implant 200, and then the plurality of first capture sleeves 21 are expanded to form a capture structure surrounding the hook body 210 and other connecting members, and then the first capture sleeve 21 is contracted, and at least one of the plurality of first capture sleeves 21 can be directly sleeved with the hook body 210 and other connecting members. Compared with the single sleeve ring method in the related art, the capture difficulty can be reduced, the capture efficiency can be improved, the possibility of multiple capture operations can be reduced, the damage to the inner wall of the lumen 100 can be reduced, and the safety of removing the implant 200 can be improved.

[0037] In some examples, optionally, the surgical implant 200 capture device includes a plurality of first catheters 30, which are at least partially installed in the first mounting tube 10 and arranged along the circumference of the first mounting tube 10. In some embodiments, the plurality of first catheters 30 can be evenly spaced along the circumference of the first mounting tube 10.

[0038] The first conduit 30 also has a proximal end and a distal end, and the length direction of the first conduit 30 can be consistent or approximately consistent with the length direction of the first mounting tube 10. In some embodiments, the material of the first conduit 30 can be set to be the same as the first mounting tube 10 and the second mounting tube 60 described below.

[0039] Combined with Fig.15 As shown, the first capture member 20 has two first free ends 22, one of which is inserted into the first conduit 30 through the distal end opening of one of the two adjacent first conduits 30, and the other first free end 22 is inserted into the other of the two adjacent first conduits 30 through the distal end opening of the other of the two adjacent first conduits 30, so that the first capture member 20 between the two adjacent first conduits 30 surrounds the first capture sleeve 21. Two first capture members 20 adjacent to each other along the circumference of the first mounting member can be inserted into each first conduit 30, thereby reducing the number of first conduits 30 used, and multiple first conduits 30 and multiple first capture members 20 can form a whole.

[0040] The two first free ends 22 can extend from the proximal ends of the first conduits 30 respectively penetrated by them, so that the operator can adjust the circumference of the first capture sleeve 21 by pulling or pushing the first free ends 22, or the first free ends 22 can be connected to the first operating member 72 on the operating handle 71 to adjust the size of the first capture sleeve 21. Of course, one of the two first free ends 22 can extend from the proximal end of the first conduit 30 penetrated by them, or neither of the two first free ends 22 can extend from the proximal end of the first conduit 30 penetrated by them, and other connecting components can be used to connect the first free ends 22 to operate the first free ends 22.

[0041] The shape of the first capture sleeve 21 when it is contracted can be Figure 7 As shown in FIG. a, the first capture sleeve 21 is only a straight line segment between two adjacent first conduits 30. The outer contour of the first capture sleeve 21 when deployed is as shown in FIG. Figure 1-3 As shown, it is similar to the shape of a valve ring. Of course, it can also be other shapes, as long as it can be sleeved on the hook body 210 of the implant 200. This embodiment will not list too many of them.

[0042] In some examples, optionally, the surgical implant 200 capture device also includes a plurality of second capture members 40, the second capture members 40 have the same or similar structure to the first capture members 20, the plurality of second capture members 40 are connected to the first mounting tube 10, and the plurality of first capture members 20 are arranged around the periphery of the plurality of second capture members 40, that is, the plurality of first capture members 20 surround the plurality of second capture members 40, or the plurality of second capture members 40 are located inside the ring surrounded by the plurality of first capture members 20.

[0043] Each second capture member 40 has a second capture sleeve 41 extending from the distal end of the first mounting tube 10 and used to receive the insertion object 200. Multiple second capture sleeves 41 are arranged circumferentially around the first mounting tube 10, and each second capture sleeve 41 is configured to be able to adjust its own circumference to move between expansion and contraction.

[0044] The connection method between the second catch member 40 and the first mounting tube 10 may be the same as that of the first catch member 20 described above, which will not be described in detail in this embodiment.

[0045] After the second capture member 40 is configured, the second capture member 40 can be deployed to form Figure 1-3 The state in the Figure 7 As shown in FIG. c and FIG. d , the second capturing member 40 and the first capturing member 20 can be used to form a multi-layer capturing sleeve structure that surrounds from the inside to the outside, so as to better capture the hook body 210 of the inserted object 200 .

[0046] In some examples, optionally, the surgical implant 200 capture device includes a plurality of second catheters 50 , which are at least partially connected to the first mounting tube 10 and arranged along the circumference of the first mounting tube 10 , and the plurality of first catheters 30 are arranged around the periphery of the plurality of second catheters 50 .

[0047] For ease of understanding, this embodiment will Figure 3 The second capture sleeve 41 and the second conduit 50 are shown in dotted lines.

[0048] The structure and material of the second conduit 50 may be the same as or similar to those of the first conduit 30 , and the matching relationship between the second conduit 50 and the second capture member 40 may be the same as the matching relationship between the first conduit 30 and the first capture member 20 .

[0049] Specifically, the second capture member 40 may have two second free ends (not shown in the figure), the second free ends are located at the proximal end of the second catheter 50, and are Fig.15 The structure of the first free end 22 is the same or similar, so this embodiment is not illustrated.

[0050] One of the two second free ends is inserted into the second conduit 50 through the distal end opening of one of the two adjacent second conduits 50, and the other of the two second free ends is inserted into the other of the two adjacent second conduits 50 through the distal end opening of the other of the two adjacent second conduits 50, and the second capture member 40 is surrounded by a second capture sleeve 41 between the two adjacent second conduits 50. Two second capture members 40 adjacent to each other along the circumference of the first mounting tube 10 can be inserted into each second conduit 50, thereby reducing the number of second conduits 50 used, and multiple second conduits 50 and multiple second capture members 40 can be formed into a whole.

[0051] In some embodiments, the second free end of each second capture member 40 can be extended beyond the proximal end of the corresponding second catheter 50 to facilitate operation of the second free end.

[0052] In order to enable the first capturing sleeve 21 and the second capturing sleeve 41 to form a multi-layered capturing structure in the radial direction of the first mounting tube 10 , the first conduit 30 is designed in this embodiment to surround the second conduit 50 .

[0053] This embodiment uses the above-mentioned two first catheters 30 and one first capturing member 20 to enclose the first capturing sleeve 21, and uses two second catheters 50 and one second capturing member 40 to enclose the second capturing sleeve 41, which not only facilitates the connection and installation of the above-mentioned catheters and capturing sleeves, but also makes it more convenient to adjust the circumference of the first capturing sleeve 21 and the second capturing sleeve 41, because the two first free ends 22 of the first capturing member 20 can be operated at the same time to adjust the circumference of the first capturing sleeve 21, and the two second free ends of the second capturing member 40 can be operated at the same time to adjust the circumference of the second capturing sleeve 41, and the structure is ingenious.

[0054] Combined with Figure 2 and 3 As shown, in some examples, optionally, along the circumference of the first mounting tube 10 , a plurality of first conduits 30 and a plurality of second conduits 50 are alternately arranged.

[0055] The above-mentioned multiple first conduits 30 and multiple second conduits 50 are alternately arranged, which means that along the circumference of the first installation tube 10, adjacent first conduits 30 and second conduits 50 are staggered and are not arranged opposite to each other along the radial direction of the first installation tube 10.

[0056] This structure allows for after the first capture sleeve 21 and the second capture sleeve 41 to be deployed, along the radial direction of the first mounting tube 10, a portion of each first capture sleeve 21 overlaps with or is disposed opposite to a portion of one of its two circumferentially adjacent second capture sleeves 41, and another portion of each first capture sleeve 21 overlaps with or is disposed opposite to a portion of the other of its two circumferentially adjacent second capture sleeves 41.

[0057] Thereby, the adjacent first capture sleeve 21 and the second capture sleeve 41 form a capture structure of multiple dimensions along the radial direction of the first mounting tube 10, which can more comprehensively cover the hook body 210 and other connecting parts of the implant 200, further reduce the difficulty of capturing the implant 200, and improve the capture efficiency of the implant 200.

[0058] In some embodiments, the proximal end of the second catheter 50 can also be extended beyond the proximal end of the first catheter 30, that is, the length of the second catheter 50 extending from the first mounting tube 10 is greater than the length of the first catheter 30 extending from the first mounting tube 10. This structure enables the distance between the distal end of the second capture sleeve 41 and the distal end of the first mounting tube 10 to be greater than the distance between the distal end of the first capture sleeve 21 and the distal end of the first mounting tube 10 along the length direction of the first mounting tube 10, thereby allowing multiple first capture sleeves 21 and multiple second capture sleeves 41 to form a capture structure similar to a multi-level capture structure from the distal end to the proximal end, further improving the capture efficiency.

[0059] The following is combined with Figure 7The specific working process of the surgical implant 200 capture device provided in some embodiments of the present application is introduced.

[0060] First, combine with Figure 7 As shown in Figure a, the operator inserts the distal end of the first mounting tube 10 into the lumen 100. At this time, the first capture sleeve 21 and the second capture sleeve 41 are both in a contracted state. It can be seen that the distance between the distal end of the second catheter 50 and the distal end of the first mounting tube 10 is greater than the distance between the distal end of the first catheter 30 and the distal end of the first mounting tube 10.

[0061] Then as Figure 7 As shown in FIG. b, the first capture sleeve 21 is opened by operating the first free end 22. For the convenience of display, the first capture sleeve 21 in the figure is shown in the form of dotted lines in this embodiment.

[0062] Then, if Figure 7 As shown in FIG. c, the second capture sleeve 41 is opened by operating the second free end, and the first capture sleeve 21 and the second capture sleeve 41 are moved to the position as shown in FIG. Figure 7 The position in Figure d.

[0063] Then Figure 7 As shown in FIG. e, the second capture sleeve 41 is contracted, and then Figure 7 As shown in FIG. f, the first capture sleeve 21 is contracted so that the first capture sleeve 21 and the second capture sleeve 41 are sleeved on the hook body 210 of the implant 200, thereby completing the capture of the implant 200, and finally pulling out the implant 200.

[0064] Combined with Figure 8 and attached Fig. 9 As shown, in some examples, optionally, the surgical implant 200 capture device also includes a second mounting tube 60, which is inserted into the first mounting tube 10 in a manner movable along the length direction of the first mounting tube 10, a plurality of first catheters 30 are arranged around the second mounting tube 60, and a plurality of second catheters 50 are installed in the second mounting tube 60 at circumferential intervals along the second mounting tube 60.

[0065] By configuring the second installation tube 60 , not only is the installation of the second conduit 50 facilitated, but also the second conduit 50 located in the second installation tube 60 can be directly surrounded by the plurality of first conduits 30 .

[0066] Furthermore, in this embodiment, the second mounting tube 60 is configured to be able to drive the second guide tube 50 to move, so that the first capturing sleeve 21 and the second capturing sleeve 41 form a distance along the length direction of the first mounting member.

[0067] This structure allows the plurality of first capture sleeves 21 and the plurality of second capture sleeves 41 to be deployed to form Figure 8In this form, the portion of the entire capture device in the human body lumen 100 can be kept coaxial (centered) with the axis of the human body lumen 100, and the first capture sleeve 21 and the second capture sleeve 41 can be kept in contact with the wall of the lumen 100 along the circumferential direction, thereby avoiding the failure to capture the hook body 210 due to the tilted placement of the annular capture device in the human body lumen 100, further reducing the capture difficulty and improving the capture efficiency.

[0068] Combined with Fig.10 As shown in Figures a, b, c, d, e and f in the figure, the working process of another surgical implant 200 capture device with a second mounting tube 60 is shown, and the specific process is the same as the aforementioned Figure 7 The same as Figure af in FIG. 1 is shown in FIG. 1 , and this embodiment will not be described in detail.

[0069] Combined with Figure 4-6 As shown, in some examples, optionally, the surgical implant 200 capture device also includes an operating component 70, which is connected to the proximal end of the first mounting tube 10, and the operating component 70 is a structure for medical personnel to operate the first free end 22 and the second free end.

[0070] The operating component 70 of this embodiment includes an operating handle 71, a first operating member 72 and a second operating member 73 connected to the operating handle 71, the first operating member 72 and the second operating member 73 can be slidably connected to the operating watch respectively, the first operating member 72 is connected to the two first free ends 22 (proximal ends) of the first capturing member 20, and is used to adjust the circumference of the first capturing sleeve 21, the second operating member 73 is connected to the two second free ends (proximal ends) of the second capturing member 40, and is used to adjust the circumference of the second capturing sleeve 41.

[0071] When the surgical implant 200 capture device of this embodiment includes a second mounting tube 60, it can also include a third operating member (not shown in the figure) slidably connected to the operating handle 71. The third operating member can be connected to the second mounting tube 60 to drive the second mounting tube 60 to slide in the first mounting tube 10, thereby adjusting the distance between the first capture sleeve 21 and the second capture sleeve 41.

[0072] In some examples, optionally, the elasticity of the first capture member 20 is greater than the elasticity of the second capture member 40, so that the stronger pressure generated by the first capture member 20 has a certain degree of squeezing on the contracted first capture member 20, making the contraction state of the entire annular capture device better, and further improving the efficiency of the capture hook body 210.

[0073] The elasticity of the first capture member 20 is greater than the elasticity of the second capture member 40, which can be achieved by designing the diameter (diameter of the cross section) of the first capture member 20 to be the diameter (diameter of the cross section) of the second capture member 40. The first capture member 20 and the second capture member 40 can be metal parts or other materials with a certain elasticity (such as plastic).

[0074] Combined with the attachment again Figure 1 As shown, in some examples, optionally, the first conduit 30 is provided with a first developing ring 80 , and / or the second conduit 50 is provided with a second developing ring 90 .

[0075] A first developing ring 80 is provided on the first catheter 30, and a second developing ring 90 is provided on the second catheter 50. The first developing ring 80 and the second developing ring 90 are made of high-density composite medical materials (for example, they may include metal or plastic). The first developing ring 80 and the second developing ring 90 are clearly visible on an in vitro display device (not shown in the figure), which is convenient for doctors to accurately locate the first catheter 30 and the second catheter 50 of this embodiment, especially when used in thinner blood vessels, which significantly improves the efficiency and safety of the operation.

[0076] The above description is only a preferred embodiment of the present invention. Those skilled in the art should understand that the scope of disclosure involved in the present invention is not limited to the technical solution formed by a specific combination of the above technical features, but also should cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present invention (but not limited to) to form a technical solution.

Claims

1. A surgical implant capture device, characterized in that: include: a first mounting tube and a plurality of first capture members; The multiple first capture members are connected to the first mounting tube, each of the first capture members has a first capture sleeve extending from the distal end of the first mounting tube and used to sleeve the inserted object, the multiple first capture sleeves are arranged circumferentially around the first mounting tube, and each of the first capture sleeves is configured to be able to adjust its own circumference to move between expansion and contraction.

2. A surgical implant capture device according to claim 1, characterized in that: The surgical implant capture device includes a plurality of first catheters, which are at least partially installed in the first mounting tube and arranged along the circumference of the first mounting tube. The first capture member has two first free ends, one of which is inserted into one of two adjacent first catheters, and the other first free end is inserted into the other of two adjacent first catheters. The first capture member partially surrounds the first capture sleeve between the two adjacent first catheters.

3. A surgical implant capture device according to claim 2, characterized in that: The surgical implant capture device also includes a plurality of second capture members, which are connected to the first mounting tube, and the plurality of first capture members are arranged around the periphery of the plurality of second capture members, and each of the second capture members has a second capture sleeve extending from the distal end of the first mounting tube and used to sleeve the implant, and the plurality of second capture sleeves are arranged circumferentially around the first mounting tube, and each of the second capture sleeves is configured to be able to adjust its own circumference to move between expansion and contraction.

4. A surgical implant capture device according to claim 3, characterized in that: The surgical implant capture device includes a plurality of second catheters, which are at least partially connected to the first mounting tube and arranged along the circumference of the first mounting tube. The plurality of first catheters are arranged around the periphery of the plurality of second catheters, and the distance between the distal end of the second catheter and the distal end of the first mounting tube is greater than the distance between the distal end of the first catheter and the distal end of the first mounting tube. The second capture member has two second free ends, one of the two second free ends is inserted into one of two adjacent second catheters, and the other of the two second free ends is inserted into the other of two adjacent second catheters. The second capture member surrounds the second capture sleeve in the portion between the two adjacent second catheters.

5. A surgical implant capture device according to claim 4, characterized in that: Along the circumference of the first mounting tube, multiple first ducts and multiple second ducts are alternately arranged. After the first capture sleeve and the second capture sleeve are unfolded, along the radial direction of the first mounting tube, a portion of each first capture sleeve overlaps with a portion of one of its two circumferentially adjacent second capture sleeves or is arranged opposite to it, and another portion of each first capture sleeve overlaps with a portion of the other of its two circumferentially adjacent second capture sleeves or is arranged opposite to it.

6. A surgical implant capture device according to claim 4, characterized in that: The first conduit is provided with a first developing ring, and / or the second conduit is provided with a second developing ring.

7. A surgical implant capture device according to claim 4, characterized in that: At least one of the two first free ends extends out of the proximal end of the first catheter, and / or at least one of the two second free ends extends out of the proximal end of the second catheter.

8. A surgical implant capture device according to any one of claims 3 to 7, characterized in that: The surgical implant capture device also includes a second mounting tube, which is inserted into the first mounting tube in a manner that it can move along the length direction of the first mounting tube, and the multiple first catheters are arranged around the second mounting tube, and the multiple second catheters are installed in the second mounting tube at circumferential intervals along the second mounting tube. The second mounting tube is configured to be able to drive the second catheter to move along the length direction of the first mounting tube, so that the first capture sleeve and the second capture sleeve form a spacing along the length direction of the first mounting member.

9. A surgical implant capture device according to any one of claims 3 to 7, characterized in that: The elasticity of the first catching member is greater than the elasticity of the second catching member.

10. A surgical implant capture device according to any one of claims 3 to 7, characterized in that: The surgical implant capture device also includes an operating component, which is connected to the proximal end of the first mounting tube. The operating component includes an operating handle, a first operating member and a second operating member connected to the operating handle, the first operating member is connected to the first capture member and is used to adjust the circumference of the first capture sleeve, and the second operating member is connected to the second capture member and is used to adjust the circumference of the second capture sleeve.

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