Degradable plugging device

Abstract

The utility model provides a degradable occluder device, which relates to the technical field of medical instruments and comprises a conveying and cutting mechanism provided with a handle, a connecting rod and a locking part, the handle is used for in-vitro operation and holding, two ends of the connecting rod are respectively connected with the handle and the locking part, an inner cavity of the connecting rod can be provided with a forming auxiliary line and a connecting line in a penetrating manner, and the connecting line is connected with the connecting rod. The locking part can lock and release the plugging device mechanism, a movable locking moving part is arranged in the locking part, a line cutting block in limiting fit with the locking moving part is arranged on the locking moving part, the line cutting block slides to cut lines, a marking ring is arranged at the end, close to the plugging device mechanism, of the locking part, and the locking moving part can move to drive the marking ring to move; the plugging device mechanism is connected with the locking part through a forming auxiliary line and a connecting line and is used for plugging the heart defect part, and a net body of the plugging device mechanism is made of a degradable material; the take-up mechanism is connected with one end of the forming auxiliary line; and the loader is arranged outside the connecting rod, and the plugging device mechanism can be arranged in the loader for pushing.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a degradable occluder device. Background Art

[0002] In the existing occluding device, when the conveying and cutting device cuts a line, the locking moving part is likely to protrude out of the instrument head, which may cause damage to tissues; at present, the marking ring is embedded inside the locking and cutting end, and its structural setting is unreasonable. During operation, the umbrella disc net body of the occluder cannot fully fit the defect part, resulting in the situation that the occluder cannot be locked tightly; in addition, most of the current occluders are made of metal materials, which are likely to leave foreign bodies and pose potential safety hazards of complications. Content of the Utility Model

[0003] The purpose of the utility model is to provide a degradable occluder device to solve the problems of easy tissue damage, insufficient fitting and easy foreign body residue in the operation process of the current occluding device.

[0004] To solve the above problems, the utility model first provides a degradable occluder device, including: a conveying and cutting mechanism, which is provided with a handle, a connecting rod and a locking part. The handle is used for holding and operating outside the body. The two ends of the connecting rod are respectively connected to the handle and the locking part. The inner cavity of the connecting rod can penetrate and be provided with a forming auxiliary wire and a connecting wire. The locking part can lock and release the occluder mechanism. The locking part is internally provided with a movable locking moving part. The locking moving part is provided with a tangent block which is in limit cooperation with it. The tangent block can slide to cut a line. One end of the locking part close to the occluder mechanism is provided with a marking ring. The movement of the locking moving part can drive the marking ring to move; an occluder mechanism, which is connected to the locking part through a forming auxiliary wire and a connecting wire and is used for occluding the cardiac defect part. The net body of the occluder mechanism is made of a degradable material; a wire collecting mechanism, which is connected to one end of the forming auxiliary wire and can traction and tighten the forming auxiliary wire; a loader, which is installed outside the connecting rod, and the occluder mechanism can be installed inside it for pushing.

[0005] With such a setting, the locking moving part of the device is internally provided with a tangent block in limit cooperation. During the driving and moving process of the two, the locking moving part will not penetrate out of the locking part, avoiding tissue damage. And a marking ring is arranged at one end of the locking part close to the occluder mechanism. When the locking moving part moves, it can drive it to fully fit with the tail end of the occluder mechanism, avoiding the problem that the occluder cannot be locked tightly, improving the surgical occluding effect. In addition, made of a degradable material, the occluder mechanism can be completely degraded in the body, realizing no residue in the intervention, reducing complications. The whole device realizes the loading, pushing, releasing and auxiliary forming of the degradable occluder, ensures that the occluder is closely attached to the defect part, and improves the effectiveness of the occlusion.

[0006] Furthermore, the locking portion is provided with a mounting tube, the cutting block and the locking movable member are arranged in the mounting tube, and a locking fixing member that cooperates with the connecting rod to limit the position is provided at the end of the mounting tube away from the connecting rod, the marking ring is installed on the locking fixing member at one end close to the occluder mechanism, and part of the locking movable member is installed inside the locking fixing member and can move therein.

[0007] Furthermore, the cutting block is partially embedded in the locking movable part, and the cross-section of one end of the locking movable part close to the cutting block is larger than the cross-section of the cutting block; a connecting fixing part is provided at one end of the mounting tube close to the connecting rod, and the connecting fixing part is limitedly matched with the connecting rod.

[0008] Furthermore, the connecting rod includes an outer tube, a main control inner tube, a wire bundle tube and a heat shrink tube, the two ends of the outer tube are respectively connected to the handle and the locking part, the main control inner tube can move forward and backward in the outer tube and is connected to the cutting block, the wire bundle tube is located outside the outer tube and its inner cavity is equipped with a molding auxiliary wire, the heat shrink tube is located outside the wire bundle tube section, and the connecting wire inserted therein can be fixed by heat shrinking the heat shrink tube.

[0009] Furthermore, one end of the shaping auxiliary wire passes through the wire harness tube, passes through the marking ring and the tail and waist of the occluder mechanism in sequence in a direction away from the handle, and is fixedly connected to one end of the occluder mechanism away from the handle.

[0010] Furthermore, both ends of the connecting line symmetrically pass through the tail end of the occluder mechanism, one end of the connecting line can pass through the locking fixture, and both ends are inserted into the heat shrink tube.

[0011] Furthermore, the handle includes a knob, a screw rod and a slider. The knob can rotate on the handle, the end of the screw rod is fixedly connected to the knob, the slider part is threadedly connected to the front end of the screw rod, and the rotation of the screw rod can drive the slider to move forward and backward. The slider is connected to one end of the main control inner tube.

[0012] Furthermore, the handle is provided with a mounting hole and a locking block installed therein, the locking block is threadedly connected to the mounting hole, and the end of the locking block can abut against the outer wall of the screw rod.

[0013] Furthermore, the handle is also provided with an upper shell and a lower shell that are detachably connected, and a first fixing piece is provided at the front end of the upper shell and the lower shell, and the first fixing piece is fixedly connected to the outer tube.

[0014] Furthermore, the mesh of the occluder mechanism is provided with an anticoagulant coating and / or a developing layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained according to the provided drawings.

[0016] Figure 1 Structural schematic diagram of the plugging device provided by the embodiment of the present invention;

[0017] Figure 2 Structural schematic diagram of the conveying tangent mechanism provided by the embodiment of the present invention;

[0018] Figure 3 Cross-sectional view of the conveying tangent mechanism provided by the embodiment of the present invention;

[0019] Figure 4 Cross-sectional view of the connecting rod and the locking part provided by the embodiment of the present invention;

[0020] Figure 5 Exploded view of the locking part provided by the embodiment of the present invention;

[0021] Figure 6 Connection schematic diagram of the conveying tangent mechanism and the plugging device mechanism provided by the embodiment of the present invention;

[0022] Figure 7 Cross-sectional view of the handle provided by the embodiment of the present invention.

[0023] Explanation of reference numerals:

[0024] 100 - Conveying tangent mechanism; 101 - Forming auxiliary line; 102 - Connecting line;

[0025] 110 - Handle; 111 - Knob; 112 - Lead screw; 113 - Slide block; 114 - Locking block; 115 - Upper housing; 116 - Lower housing; 117 - First fixing member;

[0026] 120 - Connecting rod; 121 - Outer tube; 122 - Main control inner tube; 123 - Bunching tube; 124 - Heat shrinkable tube;

[0027] 130 - Locking part; 131 - Locking moving member; 132 - Tangent block; 133 - Marking ring; 134 - Installation tube; 135 - Locking fixing member; 136 - Connection fixing member;

[0028] 200 - Plugging device mechanism;

[0029] 300 - Wire collecting mechanism;

[0030] 400 - Loader Detailed implementation manners

[0031] To make the above - mentioned objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0032] Since there are problems in the current occlusion device such as tissue damage during operation, insufficient fitting and easy foreign body residue.

[0033] To solve the above problems, this embodiment provides a biodegradable occluder device, which can be used in patent foramen ovale occlusion and other interventional procedures, such as Figure 1-7 As shown, it includes: a delivery and cutting mechanism, an occluder mechanism, a wire - winding mechanism and a loader. As Figure 2 shown, the delivery and cutting mechanism is used for the delivery, recovery and release of the occluder mechanism, and is provided with a handle, a connecting rod and a locking part. The handle is used for holding during external operation. The two ends of the connecting rod are respectively connected to the handle and the locking part. The inner cavity of the connecting rod can pass through a forming auxiliary wire and a connecting wire, and the locking part can lock and release the occluder mechanism.

[0034] The occluder mechanism is connected to the locking part through the forming auxiliary wire and the connecting wire, and is used for occluding the cardiac defect site. The mesh body of the occluder mechanism is made of a biodegradable material, such as a copolymer of one or more of polylactic acid, poly - L - lactic acid, poly - D - lactic acid, polyglycolic acid, polycaprolactone, poly - p - dioxanone, polyhydroxybutyrate, polyanhydride, polyphosphate, polyurethane, polycarbonate, silk fibroin.

[0035] The wire - winding mechanism is connected to one end of the forming auxiliary wire and can traction - tighten the forming auxiliary wire to realize the locking of the occluder mechanism; the loader is installed outside the connecting rod. By putting the occluder mechanism into the loader and then connecting the loader and the passage, the pushing process of the occluder mechanism is realized.

[0036] As Figure 4 and 5As shown, the locking part is provided with a mounting tube, a movable locking movable part is provided in the mounting tube, a tangent block which cooperates with the locking movable part is provided on the locking movable part, and optionally, the tangent block is partially embedded in the locking movable part, and the cross section of the end of the locking movable part close to the tangent block is larger than the cross section of the tangent block; the tangent block can be tangent by sliding, and a marking ring is provided at the end of the locking part close to the occluder mechanism, and the movement of the locking movable part can drive the movement of the marking ring; a locking fixing which cooperates with the limiting position is provided at the end of the mounting tube away from the connecting rod, the marking ring is installed at the end of the locking fixing close to the occluder mechanism, and part of the locking movable part is installed inside the locking fixing and can move therein. A connecting fixing is provided at the end of the mounting tube close to the connecting rod, and the connecting fixing cooperates with the limiting position of the connecting rod.

[0037] With such arrangement, a tangent block with a limit fit is provided in the locking movable part of the device. During the movement of the two, the locking movable part will not pass through the locking part, thereby avoiding damage to the tissue. A marking ring is provided at one end of the locking part close to the occluder mechanism, which can drive the locking movable part to fully fit with the tail end of the occluder mechanism when it moves, thereby avoiding the problem that the occluder cannot be locked and improving the surgical occlusion effect. In addition, by using degradable materials, the occluder mechanism can be completely degraded in the body, achieving intervention without residue and reducing complications. The device as a whole realizes the loading, pushing, releasing and auxiliary molding of the degradable occluder, ensuring that the occluder is in close contact with the defective part and improving the effectiveness of the occlusion.

[0038] like Figure 4 As shown, the connecting rod includes an outer tube, a main control inner tube, a wire bundle tube and a heat shrink tube. The two ends of the outer tube are respectively connected to the handle and the locking part. The main control inner tube can move back and forth in the outer tube and is connected to the cutting block. The wire bundle tube is located outside the outer tube and its inner cavity is equipped with a forming auxiliary wire. The heat shrink tube is located outside the wire bundle tube section. The connecting wire inserted therein can be fixed by heat shrinking the heat shrink tube.

[0039] like Figure 6 As shown, one end of the forming auxiliary wire is fixedly connected to the wire collection mechanism, passes through the openings on the top of the upper shell and the lower shell respectively, passes through the wire harness tube, and then passes through the bottom opening of the wire harness tube away from the handle end, and passes through the bottom opening of the mounting tube to lock it, and then passes through the marking ring, the tail end and waist of the occluder mechanism, and is fixedly connected to the end of the occluder mechanism away from the handle. The connection method between the occluder mechanism and the forming auxiliary wire is not unique, and can be knotted, riveted, or a line symmetrically passed through the forming auxiliary wire for connection.

[0040] Both ends of the connecting wire pass symmetrically through the tail end of the occluder mechanism, one end of which can pass through the locking fixture, and then both ends are inserted into the heat shrink tube and fixed after heat shrinkage by the heat shrink tube.

[0041] like Figure 3As shown in the figure, the handle includes a knob, a lead screw, and a slider. The knob can rotate on the handle. The end of the lead screw is fixedly connected to the knob. The slider is threadedly connected to the front end of the lead screw. The rotation of the lead screw can drive the slider to move back and forth. The slider is connected to one end of the main control inner tube. By rotating the knob, the marking ring can be locked and the retracted forming auxiliary wire can be cut off.

[0042] Optionally, the handle is provided with a mounting hole and a locking block installed therein. The locking block is threadedly connected to the mounting hole. The end of the locking block can abut against the outer wall of the lead screw. After locking, it can prevent the handle knob from being accidentally operated in the non-use state. There is also an upper shell and a lower shell that are detachably connected. The front ends of the upper shell and the lower shell are provided with a first fixing member, and the first fixing member is fixedly connected to the outer tube.

[0043] Preferably, the mesh body of the occluder mechanism is provided with an anticoagulant coating and a developing layer.

[0044] The operation process and principle of this device are as follows: Move this device along a pre-established path to the defect site. Place the two umbrella discs of the occluder mechanism on both sides of the defect site respectively. By pulling the wire-receiving mechanism, drive the forming auxiliary wire to move towards the handle end. Since one end of the forming auxiliary wire is connected to the head of the umbrella disc at the end of the occluder mechanism away from the handle, and the occluder mechanism and the marking ring of the locking part are close, under the action of the forming auxiliary wire, the two umbrella discs of the occluder mechanism are formed and closely attached to the defect site.

[0045] When performing the locking action, after the occluder mechanism is closely attached to the defect site, open the locking block at the top of the handle of the conveying and cutting mechanism, and then rotate the knob of the handle. The knob is fixedly connected to the lead screw. By rotating the lead screw, drive the slider of the lead screw to move towards the handle end. The slider is fixedly connected to the main control inner tube. The other end of the main control inner tube is fixedly connected to the cutting block. The cutting block is located at the end of the locking moving part away from the handle. When the main control inner tube drives the cutting block to move towards the handle end together, the cutting block will drive the locking moving part to move together. The upper part of the locking moving part and the locking fixing part are matched by an inclined surface. The locking moving part moves along the inclined surface of the locking fixing part towards the handle end through its own elastic deformation. When the locking moving part moves obliquely, the marking ring can be flattened to complete the locking.

[0046] When performing the cutting operation, rotate the knob in the reverse direction. Similarly, the slider, the main control inner tube, and the cutting block move away from the handle end. When the cutting block passes through the opening 1 at the bottom of the installation tube, through the shearing movement between the cutting block and the inner wall of the installation tube, the excess forming auxiliary wire and the connecting wire between the locking part and the occluder mechanism are cut off together, thereby completing the release of the occluder mechanism, and the rest is withdrawn from the body.

[0047] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the scope defined by the claims.

[0048] Finally, it should also be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0049] In this specification, the various embodiments are described in a progressive manner, and the key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other.

[0050] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A degradable occluder device, characterized in that, include: The delivery and tangent mechanism is provided with a handle, a connecting rod and a locking part. The handle is used for holding in vitro operation. The two ends of the connecting rod are respectively connected to the handle and the locking part. The inner cavity of the connecting rod can be penetrated with a molding auxiliary line and a connecting line. The locking part can lock and release the occluder mechanism. A movable locking moving part is provided in the locking part. A tangent block that matches with the limiting position is provided on the locking moving part. The tangent block can slide to perform tangent. A marking ring is provided at one end of the locking part close to the occluder mechanism. The movement of the locking moving part can drive the movement of the marking ring. The occluder mechanism is connected to the locking part through a molding auxiliary line and a connecting line, and is used for occluding the heart defect. The mesh of the occluder mechanism is made of a degradable material. A wire taking-up mechanism is connected to one end of the auxiliary forming wire and is capable of pulling and tightening the auxiliary forming wire; The loader is installed outside the connecting rod, and the occluder mechanism can be installed inside the loader for pushing.

2. The biodegradable occluder device according to claim 1, characterized in that, The locking portion is provided with a mounting tube, the cutting block and the locking movable member are arranged in the mounting tube, and a locking fixing member that cooperates with the connecting rod to limit the position is provided at the end of the mounting tube away from the connecting rod, the marking ring is installed on the locking fixing member at one end close to the occluder mechanism, and part of the locking movable member is installed inside the locking fixing member and can move therein.

3. The degradable occluder device according to claim 2, wherein The tangent block is partially embedded in the locking movable member, and the cross section of one end of the locking movable member close to the tangent block is larger than the cross section of the tangent block; a connecting fixture is provided at one end of the mounting tube close to the connecting rod, and the connecting fixture is limitedly matched with the connecting rod.

4. The biodegradable occluder device according to claim 2, wherein, The connecting rod includes an outer tube, a main control inner tube, a wire bundle tube and a heat shrink tube. The two ends of the outer tube are respectively connected to the handle and the locking part. The main control inner tube can move forward and backward in the outer tube and is connected to the cutting block. The wire bundle tube is located outside the outer tube and its inner cavity is equipped with a molding auxiliary wire. The heat shrink tube is located outside the wire bundle tube section. The heat shrink tube is used to heat shrink and fix the connecting wire inserted therein.

5. The biodegradable occluder device according to claim 4, characterized in that, One end of the shaping auxiliary wire passes through the wire harness tube, passes through the marking ring and the tail and waist of the occluder mechanism in sequence in a direction away from the handle, and is fixedly connected to one end of the occluder mechanism away from the handle.

6. The biodegradable occluder device according to claim 5, wherein The two ends of the connecting line symmetrically pass through the tail end of the occluder mechanism, one end of which can pass through the locking fixture, and both ends are inserted into the heat shrink tube.

7. The biodegradable occluder device according to claim 6, wherein The handle includes a knob, a screw rod and a slider. The knob can rotate on the handle. The end of the screw rod is fixedly connected to the knob. The slider is threadedly connected to the front end of the screw rod. The rotation of the screw rod can drive the slider to move forward and backward. The slider is connected to one end of the main control inner tube.

8. The biodegradable occluder device according to claim 7, characterized in that, The handle is provided with a mounting hole and a locking block installed therein, the locking block is threadedly connected to the mounting hole, and the end of the locking block can abut against the outer wall of the screw rod.

9. The biodegradable occluder device according to claim 8, wherein, The handle is also provided with an upper shell and a lower shell that are detachably connected. The front ends of the upper shell and the lower shell are provided with a first fixing member, and the first fixing member is fixedly connected to the outer tube.

10. The biodegradable occluder device according to any one of claims 1-9, characterized in that, The mesh body of the occluder mechanism is provided with an anticoagulant coating and / or a developing layer.

Images