CN111419302A - Left atrial appendage plugging device with adjustable distance and left atrial appendage plugging system - Google Patents
Left atrial appendage plugging device with adjustable distance and left atrial appendage plugging system Download PDFInfo
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- CN111419302A CN111419302A CN202010520705.1A CN202010520705A CN111419302A CN 111419302 A CN111419302 A CN 111419302A CN 202010520705 A CN202010520705 A CN 202010520705A CN 111419302 A CN111419302 A CN 111419302A
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- atrial appendage
- left atrial
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00477—Coupling
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00623—Introducing or retrieving devices therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/0057—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect
- A61B2017/00575—Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect for closure at remote site, e.g. closing atrial septum defects
- A61B2017/00632—Occluding a cavity, i.e. closing a blind opening
Abstract
The invention discloses a distance-adjustable left auricle plugging device and a left auricle plugging system, which comprise: an anchoring mechanism; the covering mechanism is provided with a through hole; the connecting piece main body passes through a distance-adjustable left auricle occluder through hole to be fixed with a distance-adjustable left auricle occluder anchoring mechanism, and a gap is formed between the distance-adjustable left auricle occluder connecting piece main body and the distance-adjustable left auricle occluder through hole; the elastic gripping part is arranged on at least one of the inner wall of the through hole of the left atrial appendage occluder with adjustable distance and the connecting piece main body of the left atrial appendage occluder with adjustable distance; an operating mechanism; in this patent, the connecting piece main part is connected through elasticity gripping portion with covering the mechanism, and when operating device made elasticity gripping portion take place to warp, the cover mechanism can freely adjust the position, realizes freely adjusting the distance between cover mechanism and the anchoring mechanism in the art, and the form that covers mechanism and anchoring mechanism can comply with human left atrial appendage demonstrates the contained angle that needs, realizes good shutoff effect.
Description
Technical Field
The invention relates to the field of implantation equipment and occluders, in particular to a distance-adjustable left atrial appendage occluder and a left atrial appendage occlusion system.
Background
The left auricle occluder is implanted into a human body to occlude the left auricle in the heart, thereby avoiding the problem of thrombus caused by the left auricle. The left auricle occluder is mainly structurally divided into an anchoring mechanism fixed in the left auricle, a covering mechanism for occluding the mouth of the left auricle and a connecting piece for connecting the anchoring mechanism and the covering mechanism. Because the shape difference of human left auricle is very big, different patients need the anchor mechanism and the cover mechanism of different specifications, also often different to the interval demand between anchor mechanism and the cover mechanism, and the left auricle that the form is different often needs to form certain angle between anchor mechanism and the cover mechanism, anchor mechanism and cover mechanism are coaxial arrangement among the prior art, there is a rigid connecting element between the two, when being limited by left auricle shape, when anchor mechanism and cover mechanism form the contained angle, anchor mechanism and cover mechanism itself can produce great deformation, lead to the shutoff effect to the left auricle not good, pulling force between the two also can lead to the damage to the left auricle wall. In order to improve the adaptability of the left atrial appendage occluder and reduce the harm to the patient, the length of the connecting piece between the covering mechanism and the anchoring mechanism needs to be adjustable. In the prior art, when the occluder is positioned in the heart, the length adjustment of the connecting piece mainly has the following two problems, namely the fixing structure of the connecting piece and the covering mechanism is complex, the operation is difficult, or the distance between the covering mechanism and the anchoring mechanism of the connecting piece can be only shortened and can not be extended. Therefore, it is a technical problem expected by those skilled in the art to solve whether there is a left atrial appendage occluder in which the distance between the covering mechanism and the anchoring mechanism is easy to adjust and the covering mechanism and the connecting member are easy to fix.
Disclosure of Invention
The invention aims to provide a distance-adjustable left auricle occluder and a left auricle occlusion system, when an operating mechanism enables an elastic gripping part to deform, the distance between a covering mechanism and an anchoring mechanism can be freely adjusted, when the operating mechanism is removed, a connecting piece main body is fixed with the covering mechanism, the occluder is simple in structure and convenient and fast to operate, the operation time is effectively shortened, and the pain of a patient is reduced.
The technical scheme provided by the invention is as follows:
a tunable left atrial appendage occluder comprising:
an anchoring mechanism;
the covering mechanism is provided with a through hole;
the connecting piece main body penetrates through the through hole and is fixed with the anchoring mechanism, and a gap is formed between the connecting piece main body and the through hole;
an elastic grip provided at least one of the inner wall of the through-hole and the connector body,
the operating mechanism has two working states:
in a first state, the operating mechanism and the elastic grasping part are arranged in a staggered way in the length direction so that the elastic grasping part fastens the connecting piece main body and the covering mechanism,
in the second state, the operating mechanism is positioned at the gap corresponding to the elastic gripping part so as to deform the elastic gripping mechanism, and the connecting piece main body and the covering mechanism can slide relatively.
The end of the object close to the anchoring mechanism is a far end, and the end of the object far away from the anchoring mechanism is a near end. When the occlusion operation is performed, the operating mechanism is firstly in the second state, the connecting piece main body and the covering mechanism can slide relatively at the moment, and the distance between the covering mechanism and the anchoring mechanism can be adjusted after the covering mechanism slides because the far end of the connecting piece main body is fixed with the anchoring mechanism.
And sending the occluder into the human body in the second state. In the operation process, firstly, the anchoring mechanism is fixed to the implantation position in the left atrial appendage, then the anchoring mechanism is subjected to position detection, and if the anchoring mechanism is not in proper position, the anchoring mechanism is pulled through the near end of the connecting piece main body to withdraw the anchoring mechanism; the above retrieval, release and detection of the anchoring mechanism is then repeated until the anchoring mechanism is fixed in place.
Then sliding the covering mechanism to enable the distance between the covering mechanism and the anchoring mechanism to be proper, detecting the plugging effect of the covering mechanism on the left auricle and the state of the connecting piece main body, if the plugging effect is not good, continuing to adjust the covering mechanism, and if the connecting piece is too loose, continuing to slide the covering mechanism; and repeating the sliding and blocking state detection of the covering mechanism until the covering mechanism completely seals the left auricle and the connecting piece main body is in a straightening state.
Finally, the operating mechanism is adjusted to enable the operating mechanism to be located in the first state, the elastic grasping mechanism restores to the original state, the connecting piece main body and the covering mechanism are fixed, the covering mechanism and the connecting piece main body are fixed, the connecting piece main body is cut off through a proper cutting means, and the implantation of the occluder is completed.
In the second state, the covering mechanism can freely slide in the extending direction of the connecting piece main body as required, the distance between the covering mechanism and the anchoring mechanism can be easily adjusted, and the covering mechanism can also be replaced. The operation mechanism is pulled out to one end to be in the first state, the covering mechanism and the anchoring mechanism are fixed, the structure is simple, the operation is convenient, the operation time is shortened, and the pain of a patient can be relieved.
Further preferably, the elastic grip is only disposed on the connector body, and in the second state, the operating mechanism and the covering mechanism are slidable relative to each other. In the second state, the elastic gripping part expands and compresses the through hole, and the connecting piece main body is fixed with the covering mechanism by the action of friction force; under the first state, the connecting piece main part is fixed mutually with operating device, but operating device and cover mechanism relative slip, be convenient for change the cover mechanism of different specifications according to patient's needs, cover the mechanism and change the in-process and need not to dismantle anchor structure, it is little to the patient injury, alleviates patient's misery.
Further preferably, the operating mechanism is a sleeve, the connecting piece main body is sleeved with the operating mechanism, and the elastic grasping parts are a plurality of first elastic grasping parts and a plurality of second elastic grasping parts; a plurality of first elastic gripping parts are distributed on the periphery of the inner wall of the through hole; the second elastic gripping part is arranged on the connecting piece main body and matched with the first elastic gripping part. In the first state, the first elastic gripping part grips the second elastic gripping part from the periphery, so that the connection stability of the covering mechanism and the connecting piece main body in the first state can be improved; in the second state, the sleeve penetrates through the through hole and can abut against the near end of the anchoring mechanism to push the anchoring mechanism.
Further preferably, the first resilient grip is a barb directed towards the anchoring mechanism.
Further preferably, the second resilient grip is a barb or barb that mates with the first resilient grip.
The first elastic gripping part faces the direction of the anchoring mechanism, and in the first state, the covering mechanism and the anchoring mechanism cannot be far away under the interaction of the first elastic gripping part and the second elastic gripping part. When the release of the occluder is completed, the anchoring mechanism is fixed in the left auricle, the covering mechanism covers the left auricle mouth, the left auricle makes the anchoring mechanism and the covering mechanism not close to each other, the connecting piece is in a straightening state, certain pulling force is formed on the covering mechanism and the anchoring mechanism, the covering mechanism cannot be far away from the left auricle mouth, and therefore the distance between the covering mechanism and the anchoring mechanism is fixed. The elastic gripping part has a simple structure and is beneficial to reducing the production cost.
Further preferably, the through hole comprises a first section and a second section which are connected, the first section is located on one side of the covering mechanism close to the anchoring mechanism, and the second section is located on one side of the covering mechanism far away from the anchoring mechanism. The connection structure that first section was located is used for playing the fixed action with the connecting piece main part, and the connection structure that the second section was located is used for being connected with outside pusher, and the dispersion of being convenient for covers the weight of the connection structure that sets up on the mechanism, improves the stability that covers the mechanism.
Further preferably, the through hole is located on an axis of the cover mechanism.
Further preferably, the end of the connector body is fixed to the center of the anchoring mechanism.
The connecting piece main part is connected with the center of the covering mechanism and the center of the anchoring mechanism, the stress on the periphery of the anchoring mechanism is uniform, and the stress on the plugging mechanism is uniform. In the releasing process of the occluder or after the occluder is implanted, the occluder cannot cause the rotation of the anchoring mechanism or the covering mechanism to cause the operation failure due to uneven stress, the operation time is shortened in an auxiliary way, the operation difficulty is reduced, and the operation success rate is improved.
Further preferably, the connector body is secured to the anchoring mechanism by a threaded arrangement. The detachable left atrial appendage sleeve is convenient to detach, when the anchoring mechanism is found to be not suitable for the left atrial appendage of a patient, the appropriate anchoring mechanism can be directly detached and replaced, the compatibility of the device is improved, and the operation time is shortened.
The present invention additionally provides a left atrial appendage occlusion system, comprising: a sheath tube; a pushing device; the pushing device is of a roughly straight elongated rod-shaped structure, a through inner cavity is arranged from the far end to the near end of the pushing device, the through inner cavity can be used for the operating mechanism and the near end extension part of the connecting piece to pass through, and the far end of the pushing device is provided with a connecting part used for connecting the near end of the plugging device; the pushing device can push the distance-adjustable left atrial appendage occluder with the characteristics to penetrate through the inner cavity of the sheath tube, and the sheath tube and the pushing device are matched with the left atrial appendage occluder.
The invention has the technical effects that:
the connecting piece main body is connected with the covering mechanism through the elastic gripping part, and the covering mechanism is arranged on the operating mechanism corresponding to the elastic gripping part, when the operating mechanism enables the elastic gripping part to deform, the covering mechanism can freely slide along the extending direction of the connecting piece main body to adjust the distance between the covering mechanism and the anchoring mechanism, and when the operating mechanism is pulled to the near end to enable the operating mechanism to be separated from the covering mechanism, the covering mechanism and the connecting piece main body are fixed; the distance between the covering mechanism and the anchoring mechanism can be freely adjusted in the operation, the covering mechanism and the anchoring mechanism can conform to the form of the left auricle of the human body to present a required included angle, a good plugging effect is realized, the fixing operation of the covering mechanism and the connecting piece main body is simple, the operation time can be effectively shortened, and the pain of a patient is relieved.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a first schematic structural view of an occluder in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a second resilient grip according to one embodiment of the present invention;
FIG. 3 is a schematic view of a first resilient grip configuration in accordance with one embodiment of the present invention;
FIG. 4 is a first schematic structural view of an occlusion system according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a second embodiment of the occlusion system of the present invention;
figure 6 is a first view of the occluder in accordance with one embodiment of the present invention;
FIG. 7 is a second schematic view of the installation of the occluding device of one embodiment of the invention;
FIG. 8 is a first view of a resilient grip according to one embodiment of the present invention;
FIG. 9 is a second schematic view of a resilient grip according to an embodiment of the present invention;
FIG. 10 is a schematic illustration of an embodiment of the shear of the present invention shown in its unstretched configuration;
FIG. 11 is a schematic view of a shear member according to an embodiment of the present invention when tightened;
FIG. 12 is a perspective view of a shear according to one embodiment of the present invention;
FIG. 13 is a schematic structural diagram of a pushing device according to an embodiment of the present invention;
FIG. 14 is a schematic structural view of a second occluder in accordance with an embodiment of the present invention;
FIG. 15 is a schematic structural view of a first stage of an embodiment of the present invention;
FIG. 16 is a schematic diagram of a second stage of the present invention.
The reference numbers illustrate:
10-an anchoring mechanism; 11-a first fixture; 20-a covering mechanism; 21-a through hole; 211-first stage; 212-a second segment; 22-a second fixture; 30-a connector body; 40-a resilient grip; 41-a first resilient grip; 42-a second resilient grip; 50-an operating mechanism; 60-sheath tube; 70-a pushing device; 81-shear structure; 82-tightening structure.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
As used herein, the term "proximal" refers to the end that is closer to the operator, and the term "distal" refers to the end that is further from the operator.
The present invention provides a specific embodiment of a controllable-pitch left atrial appendage occluder, as shown in fig. 1-3, comprising an anchoring mechanism 10; the covering mechanism 20 is provided with a second fixing piece 22, and the second fixing piece 22 is provided with a through hole 21; the connector body 30 penetrates through the through hole 21 to be fixed with the anchoring structure, a gap is formed between the connector body 30 and the through hole 21, the elastic gripping part 40 is divided into a first elastic gripping part 41 and a second elastic gripping part 42, the first elastic gripping part 41 is arranged on the inner wall of the through hole 21, the second elastic gripping part 42 is arranged outside the connector body 30, and the first elastic gripping part 41 and the second elastic gripping part 42 are barbs which are matched with each other; the operating mechanism 50, which is a sleeve, has two working states: in the first state, the operating mechanism 50 and the elastic grip portion 40 are arranged in a staggered manner in the length direction, so that the elastic grip portion 40 fastens the connector body 30 and the covering mechanism 20, that is, at this time, the operating mechanism 50 is pulled out of the through hole 21 towards the proximal end, and the operating mechanism 50 does not act on the elastic grip portion 40, so that the first elastic grip portion 41 and the second elastic grip portion 42 interact with each other, so that the covering mechanism 20 and the anchoring mechanism 10 are fixed through the connector body 30; in the second state, the operating mechanism 50 is located at the corresponding gap of the elastic grasping portion 40, so that the elastic grasping mechanism is deformed, and the connector body 30 and the cover mechanism 20 can slide relatively, i.e. the cover mechanism 20 can be close to the anchoring mechanism 10 or far away from the anchoring mechanism 10.
So far, it will be clear to those skilled in the art that the provision of the resilient grip 40 and the corresponding operating mechanism 50 in the occluding device enables the occluding device to have two states, one in which the covering means 20 and the anchoring means 10 are fixed and the other in which the spacing between the covering means 20 and the anchoring means 10 can be freely adjusted, which is actually the key point of the invention.
In the operation process, firstly, the occluder is stretched into the position near the left auricle of the patient, the anchoring mechanism 10 is pushed out firstly, so that the anchoring mechanism 10 is fixed in the implantation position in the left auricle, then the anchoring state of the anchoring mechanism 10 is detected, if the anchoring state is not good, the connecting piece main body 30 is pulled from the near end, the anchoring mechanism 10 is recovered through the connecting piece main body 30, and the detection is carried out again after the redeployment; repeating the above operations, sequentially carrying out recovery, re-application and state detection on the anchoring mechanism 10, and when the anchoring mechanism 10 is positioned at a proper position, then carrying out application of the covering mechanism 20;
the operating mechanism 50 is now in the second state. Applying the covering mechanism 20, sliding the covering mechanism 20 to a proper position along the connecting piece main body 30, detecting the covering state of the covering mechanism 20 and the state of the connecting piece main body 30, if the covering mechanism 20 is found not to completely cover the left auricle or the connecting piece main body 30 is too loose, sliding the covering mechanism 20 again, adjusting the distance between the covering mechanism 20 and the anchoring mechanism 10, and detecting again; the above operations are repeated, the position of the covering mechanism 20 is adjusted and re-inspection is performed until the covering mechanism 20 completely closes the left atrial appendage ostium and the connector body 30 is in a straightened state. The operation mechanism 50 is pulled proximally to be pulled out of the through hole 21, i.e. in the desired state, the distance between the anchoring mechanism 10 and the covering mechanism 20 is fixed, and finally the connector body 30 is disconnected, and the implantation of the occluder is completed.
In the operation, when the operating mechanism 50 is in the second state, the distance between the covering mechanism 20 and the anchoring mechanism 10 can be freely adjusted, and further, when the size or the shape of the covering mechanism 20 is found to be improper, the covering mechanism 20 can be slid to the near end and replaced without detaching the anchoring mechanism 10, so that the applicable scene of the occluder is increased, the operation difficulty is reduced, the operation time is shortened, and the pain of a patient is relieved.
In this embodiment, the anchoring mechanism 10 has a first fixing member 11, and the operation mechanism 50 is a cannula which can be passed through the covering mechanism 20 and abut on the proximal end of the first fixing member 11, and the anchoring mechanism 10 can be driven to move forward by pushing the cannula in the operation. In actual production, the through hole 21 may be directly provided on the main body of the cover mechanism 20, and the type and shape of the through hole 21 may be changed as needed.
In one specific embodiment, as shown in figures 1-3, the first resilient grip 41 is a free end proximally directed barb and the second resilient grip 42 is a free end distally directed barb, which cooperate with each other. When the left atrial appendage is in the first state, the first elastic gripping portion 41 and the second elastic gripping portion 42 interact with each other, so that the covering mechanism 20 cannot be far away from the anchoring mechanism 10, the anchoring mechanism 10 is anchored in the left atrial appendage, the covering mechanism 20 covers the left atrial appendage, the left atrial appendage exerts outward thrust on the covering mechanism 20, the covering mechanism 20 has a certain movement tendency of being far away from the anchoring mechanism 10 and being pulled out of the left atrial appendage, and the distance between the covering mechanism 20 and the anchoring mechanism 10 is fixed by combining the action modes of the first elastic gripping portion 41 and the second elastic gripping portion 42. The device is simple in structure and convenient to operate, switching of the connection state of the covering mechanism 20 and the connecting piece main body 30 can be completed only by drawing the operating mechanism 50 out to the near end, time consumption is extremely short, and shortening of operation time is facilitated. In actual production, the first elastic grip 41 and the second elastic grip 42 may also adopt other adaptive structures.
In a preferred embodiment, as shown in fig. 1-3, the second fixture 22 is located in the center of the cover means 20 and the through hole 21 is located on the axis of the cover means 20; the first fixing member 11 is located at the center of the anchoring mechanism 10, and the connector body 30 is fixed to the first fixing member 11 at the center of the anchoring mechanism 10.
The connecting piece main body 30 is connected with the center of the covering mechanism 20 and the center of the anchoring mechanism 10, the connecting piece main body 30 can exert certain acting force on the center of the covering mechanism 20 and the center of the anchoring mechanism 10, the stress on the periphery of the anchoring mechanism 10 is uniform, and the stress on the periphery of the covering mechanism 20 is also uniform. In the process of applying the occluder or after the occluder is installed, the occluder cannot cause the rotation of the anchoring mechanism 10 or the covering mechanism 20 to cause the operation failure due to uneven stress, thereby assisting in shortening the operation time, reducing the operation difficulty and improving the operation success rate.
In a preferred embodiment, the connector body 30 is secured to the anchor structure by a threaded arrangement, as shown in FIGS. 1-3. If it is found in the operation that preselected anchoring mechanism 10 is actually not matched with the left auricle of the patient, the anchoring mechanism 10 can be recovered, and the anchoring mechanism 10 can be directly screwed down and replaced with a new one, so that the operation is simple, the components except the anchoring mechanism 10 can be directly reused, the waste is reduced, the operation cost is reduced, and the operation time is shortened.
In a preferred embodiment, as shown in fig. 6-7, the connector body 30 is a flexible wire. Because the left auricle shapes of different patients are different, in the left auricle with different shapes, a certain included angle is formed between the axis of the covering mechanism 20 and the axis of the anchoring mechanism 10 in the optimal installation mode, and the requirement of the distance between the covering mechanism 20 and the anchoring mechanism 10 is also different. The connector main body 30 adopts a flexible piece, so that the occluder can form self-adaptation to the shape of the left auricle of a patient, the success rate of the operation is improved, the times of repeatedly replacing the occluder are reduced, the operation time is shortened, and the pain of the patient is relieved.
In a preferred embodiment, as shown in fig. 1-3, the second elastic gripping portions 42 are distributed on the inner wall of the through hole 21 in the circumferential direction, and the second elastic gripping portions 42 and the first elastic gripping portions 41 cooperate to exert force on the connecting member from the periphery, so as to improve the connection stability between the connecting member main body 30 and the cover mechanism 20.
In a preferred embodiment, as shown in fig. 8, unlike the previous embodiment, both the first resilient catch 41 and the second resilient catch 42 are barbs.
As shown in fig. 9-11, the shear member for shearing the connector body 30 includes a shear structure 81 and a tightening structure 82. The distal end of the shearing structure 81 includes two matched knife edges, when the two knife edges are not tightened, a circular hole is formed between the knife edges, when the connecting member main body 30 needs to be sheared, the operating mechanism 50 is drawn out from the proximal end, the connecting member main body 30 is inserted into the circular hole of the shearing structure 81, the shearing structure 81 is pushed to the distal end along the sheath tube 60, and the knife edge of the shearing structure 81 is tightly attached to the proximal end of the second fixing member 22. The tightening mechanism 82, i.e., a flexible tube for tightening, is then placed around the shear mechanism 81 and extended along the shear mechanism 81 to the distal end until the tightening mechanism 82 abuts the distal end of the shear mechanism 81, causing the two blades to tighten and shearing the connector body 30. After the cutting is completed, the redundant connector body 30, the cutting structure 81, the tightening structure 82 and the sheath 60 are withdrawn, and the implantation of the occluder is completed. Other methods of disconnecting the connector body 30 may be used in the actual procedure.
In a preferred embodiment, as shown in fig. 9, unlike the previous embodiment, the resilient grip 40 is a rubber member and is provided only on the connector body 30. The operating mechanism 50 is elongated. In the second state, the operating mechanism 50 compresses and deforms the elastic grip 40, at this time, the operating mechanism 50 is fixed to the elastic grip 40, the inner wall of the through hole 21 is slidable with the operating mechanism 50, and at this time, the position of the covering mechanism 20 can be directly adjusted by using the pushing device 70 connected to the second fixing member 22. When the cover mechanism 20 is moved to the proper position, the operating mechanism 50 is withdrawn proximally, the resilient grip 40 expands to press against the inner surface of the through hole 21, and the frictional force between the resilient grip 40 and the through hole 21 secures the connector body 30 to the cover mechanism 20.
In a preferred embodiment, as shown in fig. 13 to 16, different from the previous embodiment, the second fixing member 22 is separately disposed and respectively located at two sides of the covering mechanism 20, in this case, the through hole 21 includes a first section 211 and a second section 212 which are communicated, the first section 211 is located at a side of the covering mechanism 20 close to the anchoring mechanism 10, the second section 212 is located at a side of the covering mechanism 20 far from the anchoring mechanism 10, the first elastic gripping portion 41 is disposed in the first section 211, in this case, the external pushing device is fixed with a portion of the second fixing member 22 far from the anchoring portion through a threaded structure, which is beneficial for reducing the size of the second fixing member 22 in the radial direction of the through hole 21, so that the change of the center of gravity of the covering mechanism 20 after the second fixing member 22 is mounted is small, and the fixation of the. In practice, the first elastic grip 41 may be disposed in the first segment 211, or in both the first segment 211 and the second segment 212, and these solutions are all within the scope of protection of the present patent.
The present invention provides an embodiment of a left atrial appendage occlusion system, as shown in fig. 4, 5 and 13, comprising a sheath 60, a pushing device 70 and a distance-adjustable left atrial appendage occluder with the above features, wherein the sheath 60 and the pushing device 70 are adapted to the left atrial appendage occluder. The pushing device 70 is a substantially straight elongated rod-shaped structure, a through inner cavity is arranged from the distal end to the proximal end of the pushing device 70, the operating mechanism 50 and the connecting piece main body 30 can pass through the through inner cavity, and the distal end of the pushing device 70 is provided with a connecting part for connecting the proximal end of the covering mechanism 20; the pusher 70 may push the occluding device through the lumen of the sheath 60.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A tunable left atrial appendage occluder, comprising:
an anchoring mechanism;
the covering mechanism is provided with a through hole;
the connecting piece main body penetrates through the through hole and is fixed with the anchoring mechanism, and a gap is formed between the connecting piece main body and the through hole;
an elastic grip provided at least one of the inner wall of the through-hole and the connector body,
the operating mechanism has two working states:
in a first state, the operating mechanism and the elastic grasping part are arranged in a staggered way in the length direction so that the elastic grasping part fastens the connecting piece main body and the covering mechanism,
in the second state, the operating mechanism is positioned at the gap corresponding to the elastic gripping part so as to deform the elastic gripping mechanism, and the connecting piece main body and the covering mechanism can slide relatively.
2. The adjustable distance left atrial appendage occluder of claim 1, wherein:
the elastic gripping part is only arranged on the connecting piece main body, and in the second state, the operating mechanism and the covering mechanism can slide relatively.
3. The adjustable distance left atrial appendage occluder of claim 1, wherein:
the operating mechanism is a sleeve which is sleeved on the connecting piece main body, and the elastic gripping parts are a plurality of first elastic gripping parts and a plurality of second elastic gripping parts; a plurality of first elastic gripping parts are distributed on the periphery of the inner wall of the through hole; the second elastic gripping part is arranged on the connecting piece main body and matched with the first elastic gripping part.
4. A tunable left atrial appendage occluder as in claim 3, wherein:
the first resilient grip is a barb directed toward the anchoring mechanism.
5. The adjustable distance left atrial appendage occluder of claim 4, wherein:
the second resilient grip is a barb or barb that mates with the first resilient grip.
6. The adjustable distance left atrial appendage occluder of any one of claims 1-5, wherein:
the through hole comprises a first section and a second section which are connected, the first section is positioned on one side of the covering mechanism close to the anchoring mechanism, and the second section is positioned on one side of the covering mechanism far away from the anchoring mechanism.
7. The adjustable distance left atrial appendage occluder of any one of claims 1-5, wherein:
the through hole is positioned on the axis of the covering mechanism.
8. The adjustable distance left atrial appendage occluder of any one of claims 1-5, wherein:
the end of the connector body is fixed to the center of the anchoring mechanism.
9. The adjustable distance left atrial appendage occluder of any one of claims 1-5, wherein:
the connecting piece main body is fixed with the anchoring mechanism through a thread structure.
10. A left atrial appendage occlusion system, comprising:
a sheath tube;
a pushing device;
a controllable pitch left atrial appendage occluder as in any one of claims 1-9, wherein the sheath and the pusher are adapted to fit the left atrial appendage occluder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010520705.1A CN111419302B (en) | 2020-06-10 | 2020-06-10 | Left atrial appendage plugging device with adjustable distance and left atrial appendage plugging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (7)
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|---|---|---|---|---|
| US20050038470A1 (en) * | 2003-08-15 | 2005-02-17 | Van Der Burg Erik J. | System and method for delivering a left atrial appendage containment device |
| US20150230909A1 (en) * | 2005-12-01 | 2015-08-20 | Atritech, Inc. | Method and apparatus for delivering an implant without bias to a left atrial appendage |
| CN106473791A (en) * | 2016-09-22 | 2017-03-08 | 杭州诺茂医疗科技有限公司 | A kind of occluder for left auricle of adjustable distance |
| CN110025350A (en) * | 2019-05-08 | 2019-07-19 | 广东脉搏医疗科技有限公司 | The adjustable occluder for left auricle for having sliding damping |
| CN110720961A (en) * | 2019-10-28 | 2020-01-24 | 西安交通大学医学院第一附属医院 | Left auricle plugging device |
| CN110974316A (en) * | 2019-11-19 | 2020-04-10 | 先健科技(深圳)有限公司 | Plugging device |
| CN111000598A (en) * | 2019-11-19 | 2020-04-14 | 先健科技(深圳)有限公司 | Plugging device |
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2020
- 2020-06-10 CN CN202010520705.1A patent/CN111419302B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050038470A1 (en) * | 2003-08-15 | 2005-02-17 | Van Der Burg Erik J. | System and method for delivering a left atrial appendage containment device |
| US20150230909A1 (en) * | 2005-12-01 | 2015-08-20 | Atritech, Inc. | Method and apparatus for delivering an implant without bias to a left atrial appendage |
| CN106473791A (en) * | 2016-09-22 | 2017-03-08 | 杭州诺茂医疗科技有限公司 | A kind of occluder for left auricle of adjustable distance |
| CN110025350A (en) * | 2019-05-08 | 2019-07-19 | 广东脉搏医疗科技有限公司 | The adjustable occluder for left auricle for having sliding damping |
| CN110720961A (en) * | 2019-10-28 | 2020-01-24 | 西安交通大学医学院第一附属医院 | Left auricle plugging device |
| CN110974316A (en) * | 2019-11-19 | 2020-04-10 | 先健科技(深圳)有限公司 | Plugging device |
| CN111000598A (en) * | 2019-11-19 | 2020-04-14 | 先健科技(深圳)有限公司 | Plugging device |
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| CN111419302B (en) | 2020-09-01 |
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