Degradable occluder device

Abstract

A degradable occluder device, relating to the technical field of medical instruments, comprising: a conveying and wire cutting mechanism, provided with a handle, a connecting rod, and a locking part, wherein the handle is used for being operated and held in vitro, two ends of the connecting rod are respectively connected to the handle and the locking part, an inner cavity of the connecting rod can allow the insertion of a molding auxiliary wire and a connecting wire, the locking part can lock and release an occluder mechanism, a movable locking member is provided inside the locking part, a wire cutting block in limiting fit with the movable locking member is arranged on the movable locking member, sliding of the wire cutting block can achieve wire cutting, a marker ring is formed at one end of the locking part proximal to the occluder mechanism, and movement of the movable locking member can drive the marker ring to move; the occluder mechanism, connected to the locking part by means of the molding auxiliary wire and the connecting wire, used for occluding a cardiac defect site, wherein a mesh body of the occluder mechanism is made of a degradable material; a wire retrieval mechanism, connected to one end of the molding auxiliary wire; and a loader, mounted outside the connecting rod, wherein the occluder mechanism can be mounted inside the loader for pushing.

Description

Degradable occluder device TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, specifically, relate to a kind of degradable occluder device. BACKGROUND

[0002] The locking moving part of the existing occlusion device is easy to extend out of the instrument head when the delivery tangential cutting device cuts, which may cause damage to the tissue;The current marker ring is pre-buried in the locking tangential cutting end, and its structure is not reasonable, which leads to the umbrella disc net body of the occluder not being able to fully adhere to the defect site during operation, resulting in the occluder not being locked tightly;In addition, the current occluder is mostly made of metal, which is easy to leave foreign matter and has the potential safety hazard of complications.

[0003] SUMMARY

[0004] The utility model aims at providing a kind of degradable occluder device, to solve the problems of easy damage to tissue, insufficient adhesion and easy to leave foreign matter in the operation process of current occlusion device.

[0005] To solve the above problems, the utility model first provides a kind of degradable occluder device, comprising: a delivery tangential cutting mechanism, provided with a handle, a connecting rod and a locking part, the handle is used for extracorporeal operation holding, the connecting rod is connected with the handle and the locking part at both ends respectively, the inner cavity of the connecting rod can be provided with a shaped auxiliary line and a connecting line, the locking part can lock and release occluder mechanism, the locking part is provided with a movable locking moving part, the locking moving part is provided with a tangential block matched with it in position, the tangential block can slide to cut, the end of the locking part close to the occluder mechanism is provided with a marker ring, the locking moving part can drive the marker ring to move by moving;Occluder mechanism is connected with the locking part by shaped auxiliary line and connecting line, used for occluding heart defect site, the net body of the occluder mechanism adopts degradable material;Take-up mechanism is connected with one end of the shaped auxiliary line, and can pull the shaped auxiliary line tightly;Loader is installed on the outside of the connecting rod, and the occluder mechanism can be installed in its inside to push.

[0006] Thus, the locking moving part of the device is provided with a limiting and matching tangent block, and the two will not cause the locking moving part to pass out of the locking part during the moving process, thereby avoiding damage to the tissue. In addition, a marker ring is arranged at the end of the locking part close to the occluder mechanism, which can drive the locking moving part to fully adhere to the tail end of the occluder mechanism during the movement of the locking moving part, thereby avoiding the problem that the occluder cannot be locked, improving the occlusion effect of the surgery, and the occluder mechanism can be completely degraded in the body, realizing the intervention without residue, reducing the complications, and the device as a whole realizes the loading, pushing, releasing and auxiliary forming of the degradable occluder, ensures that the occluder closely adheres to the defect site, and improves the effectiveness of the occlusion.

[0007] Further, the locking part is provided with a mounting pipe, the tangent block and the locking moving part are arranged in the mounting pipe, a locking fixing part limiting and matching with the mounting pipe is arranged at one end of the mounting pipe away from the connecting rod, the marker ring is arranged on one end of the locking fixing part close to the occluder mechanism, and part of the locking moving part is arranged inside the locking fixing part and can move therein.

[0008] Further, the tangent block is partially embedded in the locking moving part, and the cross section of one end of the locking moving part close to the tangent block is larger than the cross section of the tangent block; a connecting fixing part is arranged at one end of the mounting pipe close to the connecting rod, and the connecting fixing part limiting and matching with the connecting rod.

[0009] Further, the connecting rod comprises an outer pipe, a main control inner pipe, a wire binding pipe and a heat shrink pipe, both ends of the outer pipe are connected with the handle and the locking part respectively, the main control inner pipe can move back and forth in the outer pipe and is connected with the tangent block, the wire binding pipe is located outside the outer pipe and a forming auxiliary wire is arranged in the inner cavity of the wire binding pipe, the heat shrink pipe is located outside part of the wire binding pipe, and the connecting wire passing through the heat shrink pipe can be fixed by heat shrinking the heat shrink pipe.

[0010] Further, one end of the forming auxiliary wire passes out of the wire binding pipe in the direction away from the handle, sequentially passes through the marker ring, the tail part and the waist part of the occluder mechanism, and is fixedly connected with one end of the occluder mechanism away from the handle.

[0011] Further, the connecting wire is symmetrically passed through the tail part of the occluder mechanism, one end of the connecting wire can pass through the locking fixing part, and both ends of the connecting wire are passed into the heat shrink pipe.

[0012] Further, the handle comprises a knob, a lead screw and a sliding block, the knob can rotate on the handle, the end of the lead screw is fixedly connected with the knob, the sliding block is threadedly connected with the front end of the lead screw, the rotation of the lead screw can drive the sliding block to move back and forth, and one end of the sliding block is connected with the main control inner pipe.

[0013] Further, the handle is provided with a mounting hole and a locking block arranged in the mounting hole, the locking block is threadedly connected with the mounting hole, and the locking block is capable of abutting against the outer wall of the screw rod.

[0014] Further, the handle is further provided with a detachably connected upper shell and a lower shell, 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 with the outer tube.

[0015] Further, the mesh body of the occluder mechanism is provided with an anticoagulation coating and / or a developing layer. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to the provided drawings without creative labor.

[0017] Fig. 1 is a structural schematic view of the occluder device provided by the embodiment of the present application;

[0018] Fig. 2 is a structural schematic view of the conveying and cutting line mechanism provided by the embodiment of the present application;

[0019] Fig. 3 is a sectional view of the conveying and cutting line mechanism provided by the embodiment of the present application;

[0020] Fig. 4 is a sectional view of the connecting rod and the locking part provided by the embodiment of the present application;

[0021] Fig. 5 is an exploded view of the locking part provided by the embodiment of the present application;

[0022] Fig. 6 is a connection schematic view of the conveying and cutting line mechanism and the occluder mechanism provided by the embodiment of the present application;

[0023] Fig. 7 is a sectional view of the handle provided by the embodiment of the present application.

[0024] Explanation of reference signs: 100-tangent delivery mechanism; 101-molding auxiliary line; 102-connection line; 110-handle; 111-knob; 112-screw rod; 113-sliding block; 114-locking block; 115-upper shell; 116-lower shell; 117-first fixing member; 120-connection rod; 121-outer tube; 122-main control inner tube; 123-tie tube; 124-heat shrink tube; 130-locking part; 131-locking moving member; 132-tangent block; 133-marking ring; 134-mounting tube; 135-locking fixing member; 136-connection fixing member; 200-occluder mechanism; 300-winding mechanism; 400-loader. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0026] At present, the occlusion device has the problems of damaging tissue during operation, insufficient adhesion and easy residual foreign matter.

[0027] To solve the above problems, the present embodiment provides a degradable occluder device, which can be used for patent ductus arteriosus occlusion and other interventional operations, as shown in FIGS. 1-7, comprising a tangent delivery mechanism, an occluder mechanism, a winding mechanism and a loader, as shown in FIG. 2, the tangent delivery mechanism is used for the delivery, recovery and release of the occluder mechanism, and is provided with a handle, a connection rod and a locking part, the handle is used for holding outside the body, the connection rod is connected with the handle and the locking part at both ends, the inner cavity of the connection rod can pass through the molding auxiliary line and the connection line, and the locking part can lock and release the occluder mechanism.

[0028] The occluder mechanism is connected with the locking part through the molding auxiliary line and the connection line, and is used for occluding the heart defect part, the net body of the occluder mechanism is made of degradable material, for example, one or more than two copolymers of polylactic acid, poly-l-lactic acid, poly-d-lactic acid, polyglycolide, polycaprolactone, poly-p-dioxanone, polyhydroxybutyrate, poly anhydride, polyphosphate, polyurethane, polycarbonate, silk fibroin.

[0029] The winding mechanism is connected with one end of the molding auxiliary line and can pull and tighten the molding auxiliary line to realize the locking of the occluder mechanism; the loader is arranged outside the connection rod, the occluder mechanism is loaded into the loader, and then the loader and the passage are connected, so that the pushing process of the occluder mechanism is realized.

[0030] As shown in Figures 4 and 5, the locking part is provided with a mounting pipe, a movable locking moving part is arranged in the mounting pipe, a tangent block matched with the locking moving part is arranged on the locking moving part, optionally, the tangent block is partially embedded in the locking moving part, and the cross section of the end of the locking moving part close to the tangent block is larger than the cross section of the tangent block; the tangent block can slide to cut a tangent, the end of the locking part close to the occluder mechanism is provided with a marker ring, and the locking moving part can drive the marker ring to move; the end of the mounting pipe away from the connecting rod is provided with a locking fixing part matched with the mounting pipe, the marker ring is arranged on the end of the locking fixing part close to the occluder mechanism, and part of the locking moving part is arranged in the locking fixing part and can move in the locking fixing part. The end of the mounting pipe close to the connecting rod is provided with a connecting fixing part matched with the connecting rod.

[0031] In this way, the locking moving part of the device is provided with a limiting tangent block, and the two can be driven to move without causing the locking moving part to penetrate out of the locking part, so as to avoid damaging the tissue, and the marker ring is arranged at the end of the locking part close to the occluder mechanism, which can be driven to fully adhere to the tail end of the occluder mechanism when the locking moving part moves, thereby avoiding the problem that the occluder cannot be locked, improving the occlusion effect of the operation, and in addition, the occluder mechanism can be completely degraded in the body, realizing interventional residue-free and reducing complications. The device as a whole realizes the loading, pushing, releasing and auxiliary forming of the degradable occluder, ensures that the occluder closely adheres to the defect site, and improves the effectiveness of occlusion.

[0032] As shown in Figure 4, the connecting rod includes an outer pipe, a main control inner pipe, a wire binding pipe and a heat shrink pipe, the two ends of the outer pipe are respectively connected with the handle and the locking part, the main control inner pipe can move forward and backward in the outer pipe and is connected with the tangent block, the wire binding pipe is located outside the outer pipe and a forming auxiliary wire is arranged in the inner cavity of the wire binding pipe, and the heat shrink pipe is located outside part of the wire binding pipe, and the connecting wire arranged in the heat shrink pipe can be fixed by heat shrinking the heat shrink pipe.

[0033] As shown in Figure 6, one end of the forming auxiliary wire is fixedly connected with the take-up mechanism, respectively passes through the openings in the top of the upper shell and the lower shell, passes through the wire binding pipe, then passes out of the bottom opening of the wire binding pipe away from the handle end, and then passes into the locking part from the bottom opening of the mounting pipe, then passes through the marker ring, the tail end closing part of the occluder mechanism and the waist part, and is fixedly connected with the occluder mechanism away from the handle end. The connection mode of the occluder mechanism and the forming auxiliary wire is not unique, which can be knotting, riveting or symmetrical passing through the forming auxiliary wire.

[0034] The two ends of the connecting wire symmetrically pass through the tail end closing part of the occluder mechanism, one end of which can pass through the locking fixing part, and then both ends pass into the heat shrink pipe, and are fixed after heat shrinking the heat shrink pipe.

[0035] As shown in Fig. 3, the handle comprises a knob, a screw rod and a sliding block, the knob is rotatable on the handle, the screw rod is fixedly connected with the knob at the end, the sliding block is threadedly connected with the screw rod at the front end, the screw rod can drive the sliding block to move forward and backward, and the sliding block is connected with one end of the main control inner tube. By rotating the knob, the marker ring can be locked and the withdrawn forming auxiliary line can be cut off.

[0036] Optionally, the handle is provided with a mounting hole and a locking block arranged in the mounting hole, the locking block is threadedly connected with the mounting hole, the end of the locking block can abut against the outer wall of the screw rod, and after locking, the handle knob can be prevented from being mistakenly operated in the non-use state. Further, a detachable upper shell and a lower shell are arranged, and 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 with the outer tube.

[0037] Preferably, the net body of the occluder mechanism is provided with an anticoagulation coating and a developing layer.

[0038] The operation process and principle of the device are as follows: the device is moved along the pre-established path to the defect site, the two umbrella discs of the occluder mechanism are respectively arranged on the two sides of the defect site, the forming auxiliary line is driven to move towards the handle end by pulling the take-up mechanism, one end of the forming auxiliary line is connected with the umbrella disc head away from the handle end of the occluder mechanism, and the marker ring of the locking part is close to the occluder mechanism, under the action of the forming auxiliary line, the two umbrella discs of the occluder mechanism are formed and closely attached to the defect site.

[0039] When the locking action is performed, after the occluder mechanism closely attaches to the defect site, the locking block at the top of the handle of the delivery cutting line mechanism is opened, then the knob of the handle is rotated, the knob is fixedly connected with the screw rod, the sliding block is driven to move towards the handle end by rotating the screw rod, the sliding block is fixedly connected with the main control inner tube, the other end of the main control inner tube is fixedly connected with the cutting block, and the cutting block is located away from the handle end of the locking moving part, when the main control inner tube drives the cutting block to move towards the handle end, the cutting block drives the locking moving part to move, the locking moving part and the upper part of the locking fixing member are matched through the slope, and the locking moving part moves towards the handle end along the slope of the locking fixing member through the elastic deformation of the locking moving part. When the locking moving part moves obliquely, the marker ring is flattened to complete the locking.

[0040] When the cutting line operation is performed, the knob is rotated in the opposite direction, and the sliding block, 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 mounting tube, the excess forming auxiliary line and the connecting line between the locking part and the occluder mechanism are cut off through the shearing movement of the cutting block and the inner wall of the mounting tube, so that the release of the occluder mechanism is completed, and the remaining part is withdrawn out of the body.

[0041] Although the utility model discloses as above, the utility model is not limited to this. Any person skilled in the art, without departing from the spirit and scope of the utility model, can make various changes and modifications, therefore the protection scope of the utility model should be limited to the range defined by the claims.

[0042] Finally, it should also be noted that in this document, relational terms such as first and second and the like can merely be used to distinguish one entity or action from another, without necessarily requiring or implying that the entities or actions are in any way actually related or ordered in time. The terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0043] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be mutually referred to.

[0044] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the utility model. Various modifications to these embodiments will be apparent 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 utility model. Therefore, the utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A degradable occlusion device, comprising: The application relates to a delivery cutting mechanism, which comprises a handle, a connecting rod and a locking part, the handle is used for holding outside the body, the two ends of the connecting rod are connected with the handle and the locking part respectively, the inner cavity of the connecting rod can be provided with a forming auxiliary line and a connecting line, the locking part can lock and release a plugging device, the locking part is internally provided with a movable locking moving part, the locking moving part is provided with a cutting line block matched with the locking moving part in position, the cutting line block can slide to cut the line, one end of the locking part close to the plugging device is provided with a mark ring, and the locking moving part can drive the mark ring to move. The plugging device is connected with the locking part through the forming auxiliary line and the connecting line, and is used for plugging a heart defect part, and the net body of the plugging device is made of degradable material. The winding mechanism is connected with one end of the forming auxiliary line and can pull and tighten the forming auxiliary line. The loader is arranged outside the connecting rod, and the plugging device can be arranged inside the loader to be pushed. The locking part is provided with a mounting pipe, the cutting line block and the locking moving part are arranged in the mounting pipe, one end of the mounting pipe away from the connecting rod is provided with a locking fixing part matched with the mounting pipe in position, the mark ring is arranged on one end of the locking fixing part close to the plugging device, and part of the locking moving part is arranged inside the locking fixing part and can move in the locking fixing part.

2. The degradable occlusion device of claim 1, wherein, The cutting line block is partially embedded in the locking moving part, and the cross section of one end of the locking moving part close to the cutting line block is larger than the cross section of the cutting line block; one end of the mounting pipe close to the connecting rod is provided with a connecting fixing part matched with the connecting rod in position.

3. The degradable occlusion device of claim 2, wherein, The connecting rod comprises an outer pipe, a main control inner pipe, a wire bundling pipe and a heat shrinkable pipe, the two ends of the outer pipe are connected with the handle and the locking part respectively, the main control inner pipe can move back and forth in the outer pipe and is connected with the cutting line block, the wire bundling pipe is located outside the outer pipe and is provided with the forming auxiliary line in the inner cavity, and the heat shrinkable pipe is located outside part of the wire bundling pipe and can be fixed with the connecting line in the heat shrinkable pipe through heat shrinkage.

4. The degradable occlusion device of claim 2, wherein, One end of the forming auxiliary line is pulled out from the wire bundling pipe, is sequentially pulled through the mark ring, the tail part and the waist part of the plugging device away from the handle, and is fixedly connected with one end of the plugging device away from the handle.

5. The degradable occlusion device of claim 4, wherein, The two ends of the connecting line are symmetrically pulled through the tail part of the plugging device, one end of the connecting line can be pulled through the locking fixing part, and the two ends of the connecting line are pulled into the heat shrinkable pipe.

6. The degradable occlusion device of claim 5, wherein, The handle comprises a knob, a screw rod and a sliding block, the knob can rotate on the handle, the screw rod is fixedly connected with the knob at the tail end, the sliding block is threadedly connected with the front end of the screw rod, the screw rod can drive the sliding block to move back and forth, and the sliding block is connected with one end of the main control inner pipe.

7. The degradable occlusion device of claim 6, wherein, The handle is provided with a mounting hole and a locking block arranged in the mounting hole, the locking block is threadedly connected with the mounting hole, and the tail end of the locking block can abut against the outer wall of the screw rod.

8. The degradable occlusion device of claim 7, wherein, ​ 9. The degradable occlusion device of claim 8, wherein, The handle is further provided with detachably connected upper and lower shells, the front ends of the upper and lower shells are provided with first fixing members, and the first fixing members are fixedly connected with the outer tube.

10. The degradable occlusion device of any of claims 1-9, wherein, The mesh body of the occluder mechanism is provided with an anticoagulation coating and / or a developing layer.

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