CN115737048A - Blood vessel blocking device and blocking device - Google Patents

Abstract

The application relates to a blood vessel blocking device and a blocking device, wherein the blood vessel blocking device comprises a memory band, and the memory band comprises a curled initial state and a flat deformation state; the memory belt passes through the shaping structure and is arranged on the shaping piece in a sliding mode, and two sections of the two opposite sides of the shaping piece, which are located in different states, of the memory belt are located in different states respectively. This application is through rolling up certainly of memory area and winding tightly on the blood vessel to block the blood vessel, realize stanching, the operation degree of difficulty is low, and the memory area can stretch to the blood vessel department of different positions, and the suitability is strong.

Description

Blood vessel blocking device and blocker

Technical Field

The application relates to the technical field of medical appliances, in particular to a blood vessel blocking device and a blocking device.

Background

Currently, hemostasis is an important item in medical operations, and generally, hemostasis by drugs, compression hemostasis, blocking hemostasis, or the like can be adopted.

In the related art, vein occlusion means includes two kinds, one is to occlude a vein by using a vessel occlusion forceps to stop bleeding; the other method is to use the blocking belt to stop bleeding, specifically to wind the blocking belt around the blocked vein, then pass the two ends of the blocking belt through the restraining ring, lift the two ends of the blocking belt during blocking, and tighten the blocking belt and then apply a Hem-o-lok clamp on the other end of the restraining belt to maintain the blocking effect.

Because the vessel blocking forceps are influenced by the trend of the vein, the width of the vein and the like, the vessel blocking forceps can be used for blocking the vein under not all conditions, and the applicability of the vessel blocking forceps is poor; in addition, the blood vessel blocking tape is complicated to use, the blocking tape needs to be wound around the vein, certain operation difficulty exists, and injury bleeding is often caused in the process.

Disclosure of Invention

The embodiment of the application provides a blood vessel blocking device and a blocking device, and aims to solve the technical problems that the applicability of a blood stopping mode in the related technology is poor and the operation difficulty is high.

In a first aspect, there is provided a vascular occlusion device, comprising:

a memory band including an initial state in which it is curled and a deformed state in which it is flat;

the plastic part comprises a plastic structure, the memory belt passes through the plastic structure and is arranged on the plastic part in a sliding mode, and the two sections of the two opposite sides of the plastic part are in different states respectively.

In some embodiments, the memory band has a cross-sectional shape in the initial state that is a first shape and a cross-sectional shape in the deformed state that is a second shape, and the shaping structure is configured to switch the cross-sectional shape of the memory band between the first shape and the second shape.

In some embodiments, the shaping structure includes a shaping hole, the cross-sectional shapes of the shaping hole on two opposite sides of the shaping member are the first shape and the second shape respectively, and the cross-sectional shape of the shaping hole gradually changes from the first shape to the second shape along the center line of the shaping hole.

In some embodiments, the first shape comprises a rectangle and the second shape comprises a sector.

In some embodiments, the vascular occlusion device further comprises a buffer layer, wherein the buffer layer is coated on the surface of the memory band.

The beneficial effect that technical scheme that this application provided brought includes:

the embodiment of the application provides a blood vessel blocking device, because the initial state of memory area is the curling form, need block the blood vessel and when stanching, make it pass moulding structure on the piece through pushing out the memory area, so that the memory area returns to the initial state, the memory area of curling form can be convoluteed automatically and twine tightly on the blood vessel, in order to realize blocking the blood vessel, because the memory area is automatic winding, need not to adopt the instrument to drive the memory area and convolute, therefore the operation degree of difficulty is low, the memory area can stretch to the blood vessel department of different positions, therefore, the suitability is strong, be convenient for block the blood vessel of each position department. In addition, after the hemostasis is finished, the memory band is shaped to be in a deformation state by pulling the memory band through the shape shaping structure, the memory band is not curled any more, and the memory band in a straight shape is convenient to take out.

In a second aspect, there is provided an occluder comprising a vascular occlusion device as described above.

In some embodiments, the occluder further comprises a force applying member and a connecting structure, at least one end of the memory band is provided with the connecting structure, and the connecting structure is used for connecting with the force applying member.

In some embodiments, the force applying member comprises:

the guide sleeve is suitable for being connected with the shaping piece, and the part of the memory belt in the deformed state is suitable for extending into the guide sleeve;

the telescopic rod penetrates through the guide sleeve in a sliding manner, and the telescopic rod is suitable for being connected with the connecting structure;

and the operating mechanism is in transmission connection with the telescopic rod so as to drive the telescopic rod to slide relative to the guide sleeve.

In some embodiments, the force applicator further comprises a clamping assembly comprising:

the connecting structure comprises a clamping groove, and the clamping strip is suitable for being inserted into the clamping groove;

the clamping handle is rotatably arranged on the telescopic rod;

the telescopic rod is provided with a mounting groove along the length direction of the telescopic rod, the connecting rod is rotatably arranged in the mounting groove, one end of the connecting rod is connected with the clamping connecting rod, and one end of the clamping handle is abutted to the connecting rod;

and two ends of the elastic piece are respectively connected with the connecting strip and the telescopic rod.

In some embodiments, the occluder further comprises a mating structure comprising:

the first magnetic part is connected with the shaping part, and a matching groove is formed in the first magnetic part;

the second magnetic part is connected with the force application part, a matching block is connected onto the second magnetic part, and the first magnetic part and the second magnetic part form a plug-in matching through the matching groove and the matching block.

Another embodiment of the present application provides an occluder, which includes the above-mentioned blood vessel occlusion device, so that the advantageous effects of the occluder are consistent with those of the above-mentioned blood vessel occlusion device, and will not be described herein again.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of a vascular occlusion device provided in an embodiment of the present application;

FIG. 2 is a schematic view of a vascular occlusion device according to an embodiment of the present application;

FIG. 3 is a schematic view of a shaping member provided by an embodiment of the present application;

fig. 4 is a schematic view of another perspective of a shaping member provided in an embodiment of the present application;

FIG. 5 is a schematic view of a force applying member and blocking device provided in accordance with another embodiment of the present application, in a ready to connect state;

FIG. 6 is a partially schematic illustration of a force applying member and blocking device in a ready to connect state as provided in another embodiment of the present application;

FIG. 7 is a schematic view of a preliminary connection state of a force applying member and a blocking device according to another embodiment of the present application;

FIG. 8 is a schematic view of a force applying member and blocking device as provided in accordance with another embodiment of the present application;

FIG. 9 is a schematic view of a memory band blocking a vessel state according to another embodiment of the present application;

FIG. 10 is a partial longitudinal cross-sectional view of a force applying member provided in accordance with another embodiment of the present application.

In the figure: 1. a memory band; 2. a plastic part; 201. shaping the structure; 3. a force application member; 301. a clamping assembly; 3011. a clamping strip; 3012. clamping a handle; 3013. a connecting strip; 3014. an elastic member; 302. a guide sleeve; 303. a telescopic rod; 303a, a mounting groove; 304. an operating mechanism; 4. a connecting structure; 5. a mating structure; 501. a first magnetic member; 5011. a mating groove; 502. a second magnetic member; 5021. and (6) matching the blocks.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a blood vessel blocking device and blocker, and this blood vessel blocking device is through the self-winding of memory area and convolute and twine tightly on the blood vessel to block the blood vessel, realize stanching, the hemostasis mode suitability is poor among the relevant technique is solved in this application, the technical problem that the operation degree of difficulty is big.

Referring to fig. 1 and 2, a vascular occlusion device includes a memory band 1 and a shaping member 2. The memory strip 1 is made of metal, in this embodiment, the memory strip 1 is made of titanium alloy, and in some embodiments, the memory strip 1 may also be made of memory metal. The memory strip 1 is in a strip shape, and the memory strip 1 has two states, one is a curled initial state, and the other is a flat deformed state. It should be noted that the memory band 1 in this embodiment uses the elastic properties of metal to support its switching between two states. When the blood vessel needs to be blocked, the memory band 1 returns to the initial state and is in a curled state, and is automatically curled and wound on the blood vessel so as to block the blood vessel. Before or after hemostasis is completed, the memory band 1 is in a flat state so as to facilitate the memory band 1 to be sent to or removed from a blood vessel.

With reference to fig. 1 and 2, the plastic 2 comprises a shaping structure 201, by means of which the plastic 2 memorizes the belt 1 to switch between the initial state and the deformed state. The memory belt 1 passes through the shaping structure 201 and is slidably disposed on the shaping member 2, and two sections of the memory belt 1 on two opposite sides of the shaping member 2 are in different states respectively, it can be understood that the state of the memory belt 1 can be changed by passing through the shaping structure 201.

Referring to fig. 1 and 2, the cross-sectional shape of the memory band 1 in the initial state is a first shape, and the cross-sectional shape of the memory band 1 in the deformed state is a second shape. The shaping structure 201 changes the state of the memory band 1 by changing the cross-sectional shape of the memory band 1, and the shaping structure 3 switches the cross-sectional shape of the memory band 1 between a first shape and a second shape. The shaping structure 201 can change the cross-sectional shape of the memory band 1 from a first shape to a second shape, and also from the second shape to the first shape. In this embodiment, when the memory band 1 passes through the plastic member 2 along the reverse direction of the first direction, the memory band 1 gradually changes from the deformed state to the initial state, and when the memory band 1 passes through the plastic member 2 along the forward direction of the first direction, the memory band 1 gradually changes from the initial state to the deformed state. Wherein, the first direction is the length direction of the memory tape 1 when it is straight, i.e. the Y-axis direction in the figure.

Referring to fig. 1-4, in the present embodiment, the shaping structure 201 includes a shaping hole. The plastic part 2 is arranged in a block shape, the center line direction of the plastic hole is also arranged along the first direction, and the plastic hole penetrates through the plastic part 2. The cross-sectional shape of the shaping hole at the opposite sides of the shaping member 2 is a first shape and a second shape, respectively, and the cross-sectional shape of the shaping hole is gradually changed from the first shape to the second shape along the center line thereof. When the memory strip 1 passes through the shaping hole, the memory strip is shaped under the pushing action of the hole wall of the shaping hole, so that the cross section shape of the memory strip 1 is changed.

Referring to fig. 1-4, in particular, the first shape comprises a rectangle and the second shape comprises a fan. It can be understood that when the cross-sectional shape of the memory band 1 is rectangular, the memory band 1 is in an initial state and is in a curled shape; when the cross section of the memory belt 1 is in a fan shape, the memory belt 1 is in a deformed state and is in a straight shape. The shaping structure 201 functions to change the cross-sectional shape of the memory band 1 from a fan shape to a rectangular shape, or from a rectangular shape to a fan shape. In this embodiment, the cross-sectional shapes of the shaping holes on the two side surfaces of the shaping member 2 are respectively rectangular and fan-shaped.

Further, this blood blocking device still includes the buffer layer, and the buffer layer cladding is in the surface of memory area 1, and the buffer layer is flexible material, including silica gel or latex. The buffer layer wraps the hard memory band 1, and when the memory band 1 is wound and tightly wound on a blood vessel, the blood vessel is not easy to be damaged, and in the process of stopping bleeding, the affected part is not easy to be additionally damaged.

Referring to fig. 1 and 2, further, since the memory band 1 is provided with a thickened curled distal end, it is easier to bind the blood vessel when the memory band 1 is curled, and it is difficult for the memory band 1 to pass through the plastic member 2 from the positive direction of the first direction after the memory band 1 is provided with a thickened curled distal end.

The memory band 1 is automatically curled to block blood vessels, the clamping force can reach 150g through testing, and the clamping force of the traditional hemostatic clamp is 100-150g, so that the blood vessels can be blocked by the clamping force applied to the blood vessels by the memory band 1, and the hemostatic requirement can be met.

The blood blocking device that this application embodiment provided, because the initial state of memory area 1 is the curling form, need block the blood vessel and when stanching, make it pass moulding structure 201 on moulding 2 through promoting memory area 1, so that memory area 1 returns to the initial state, the memory area 1 of curling form can be convoluteed automatically and twine tightly on the blood vessel, in order to realize blocking the blood vessel, because memory area 1 is automatic coiling, need not to adopt the instrument to drive memory area 1 and convolute, therefore the operation degree of difficulty is low, memory area 1 can stretch to the blood vessel department of different positions, therefore, the suitability is strong, be convenient for block the blood vessel of each position department. In addition, after the hemostasis is finished, through pulling memory area 1 through moulding structure 201, memory area 1 is moulded to the deformation state, and memory area 1 no longer curls, and memory area 1 that is straight form is conveniently taken out.

Another embodiment of the present application provides an occluder including a vascular occlusion device as described above.

Referring to fig. 5 and 6, further, the occluder further comprises a force application member 3 and a connection structure 4, the connection structure 4 is disposed on the memory band 1 and is connected with the force application member 3, and the force application member 3 drives the memory band 1 to pass through the shaping structure 201, so as to switch the memory band 1 between the initial state and the deformed state.

Referring to fig. 1, 2 and 6, further, at least one end of the memory band 1 is provided with a connecting structure 4, in this embodiment, one end of the memory band 1 is provided with the connecting structure 4, and the force application member 3 drives the memory band 1 to pass through the shaping structure 201 by pushing and pulling the memory band 1. Preferably, the connection structure 4 is provided at the end of the memory band 1 in the deformed state, i.e. at the end of the straight section of the memory band 1. After the force application member 3 is connected with the connecting structure 4, the memory band 1 is pulled to pass through the shaping structure 201, and at the moment, the memory band 1 is gradually changed from the initial state of curling to the flat deformation state; the memory band 1 is pushed through the shaping structure 201, and the memory band 1 gradually changes from a flat deformed state to a curled initial state.

Referring to fig. 5 and 6, in particular, in the embodiment, the connection structure 4 includes a slot, two connection plates are fixed at one end of the memory band 1, the two connection plates are arranged at an interval, and the slot is formed between the two connection plates. And the force application part 3 is matched with the clamping groove in a clamping manner, so that the memory tape 1 is driven to move relative to the plastic part 2 through the force application part 3.

Referring to fig. 5 and 6, specifically, the force application member 3 includes a guide sleeve 302, a telescopic rod 303, and a manipulation mechanism 304. The front end of the guide sleeve 302 is provided with an opening, the shaping piece 2 is suitable for being connected to the front end of the guide sleeve 302, and a straight section of the memory band 1 can extend into the guide sleeve 302. The telescopic rod 303 penetrates through the guide sleeve 302, the telescopic rod 303 can be connected with the memory band 1, and the telescopic rod 303 is driven by the control mechanism 304 to slide in the guide sleeve 302 so as to push and pull the memory band 1.

Referring to fig. 5 to 9, when it is required to block a blood vessel, the plastic member 2 is previously attached to the front end of the guide sleeve 302, the flat portion of the memory band 1 is located in the guide sleeve 302, and the memory band 1 is connected to the telescopic bar 303. The guiding sleeve 302 is extended to the position of the blood vessel to be blocked, the control mechanism 304 is used for driving the telescopic rod 303 to slide relative to the guiding sleeve 302 so as to drive the memory belt 1 to pass through the plastic part 2, so that the memory belt 1 is automatically wound on the blood vessel, and the operation of blocking the blood vessel is completed.

Referring to fig. 5-9, when the plastic part 2 and the memory band 1 need to be taken out from the body, the guide sleeve 302 is extended to the blocked blood vessel, the guide sleeve 302 is connected with the plastic part 2, the memory band 1 is connected with the telescopic rod 303, the telescopic rod 303 is driven by the control mechanism 304 to slide relative to the guide sleeve 302 so as to drive the curled section of the memory band 1 to pass through the plastic part 2, the blocking of the blood vessel is released, and most of the memory band 1 is retracted into the guide sleeve 302, so that the memory band 1 and the plastic part 2 can be conveniently taken out from the body.

Wherein the guiding sleeve 302 is passed through Trocar (laparoscopic puncture cannula) and extended into the body. According to the inner diameter requirement of Trocar, the widest Trocar has an inner diameter of 13mm, so the diameter of the guide sleeve 302 should be less than 13mm to ensure sliding in Trocar. It should be noted that the guide sleeve 302 and other components of the blocking device are correspondingly sized according to different sizes of Trocar.

Referring to fig. 5 and 10, the force applying member 3 includes a clamping assembly 301, and the telescopic rod 303 is connected to the connecting structure 4 on the memory band 1 through the clamping assembly 301. Specifically, clamping assembly 301 includes clamping strip 3011, clamping handle 3012, connecting strip 3013, and elastic piece 3014. Wherein, the telescopic link 303 is provided with an installation groove 303a arranged along the length direction thereof, and the connection strip 3013 is rotatably connected to the groove wall of the installation groove 303 a. One end of the connecting strip 3013 is fixedly connected to the clamping strip 3011, and the other end of the connecting strip 3013 is hinged to the wall of the mounting groove 303 a. One end of clamping handle 3012 abuts against connecting strip 3013. The two ends of the elastic piece 3014 are fixed to the connecting bar 3013 and the groove wall of the mounting groove 303 a.

Referring to fig. 5 and 10, specifically, after the straight section of the memory band 1 extends into the guide sleeve 302, the clamping strip 3011 can be inserted into the connecting structure 4, so that the telescopic rod 303 is in clamping fit with the memory band 1. Specifically, the elastic force of the elastic piece 3014 pushes the connecting strip 3013, and maintains the clamping strip 3011 in a state of being inserted into the connecting structure 4. In this embodiment, the elastic member 3014 includes a spring.

Referring to fig. 5 and 10, specifically, clamping handle 3012 is rotatably disposed on telescopic rod 303, clamping handle 3012 abuts against connecting strip 3013, and clamping handle 3012 is rotated to push connecting strip 3013 to rotate so as to drive clamping strip 3011 to rotate, so that clamping strip 3011 is separated from connection structure 4.

Referring to fig. 10, specifically, a through groove for the fastening handle 3012 to pass through is formed in a side wall of the guide sleeve 302, and in order to ensure that the fastening handle 3012 slides with the telescopic rod 303 relative to the guide sleeve 302, a length direction of the through groove is consistent with a length direction of the guide sleeve 302.

It can be understood that, through stirring joint handle 3012, and drive joint strip 3011 and move to breaking away from the joint position, can be through driving telescopic link 303 motion, and drive joint strip 3011 in step and move to connection structure 4's position, joint handle 3012 is loosened to the rethread, under the effect of elastic component 3014, joint strip 3011 return to the joint position to in extending connection structure 4, in order to accomplish being connected of telescopic link 303 and memory area 1.

Referring to fig. 5 and 6, alternatively, the structure of the steering mechanism 304 corresponds to the operating handle mechanism of a prior art clip applier which achieves linear movement through a scissor-fork arrangement, and will not be described in detail herein. In other embodiments, the steering mechanism 304 may also be implemented as a linear module, such as a linear motor.

In some embodiments, the force applying member 3 includes a clamp applying member, and the memory band 1 can be directly clamped by the clamp applying member, so as to drive the memory band 1 to move.

Referring to fig. 5 and 6, wherein the blocker further comprises a fitting structure 5, the guide sleeve 302 and the shaping member are detachably connected by the fitting structure 5. The mating structure 5 includes a first magnetic member 501 and a second magnetic member 502. The first magnetic member 501 is connected to the plastic member 2, and a matching slot 5011 is formed in the first magnetic member 501. The second magnetic member 502 is connected to the force applying member 3, and the second magnetic member 502 is connected to the engaging block 5021. The first magnetic member 501 and the second magnetic member 502 form a plug-in fit through the mating slot 5011 and the mating block 5021. In this embodiment, the first magnetic member 501 and the second magnetic member 502 are both magnets.

In this embodiment, the second magnetic member 502 is fixed at the opening at the front end of the guide sleeve 302, and the mounting plate is fixed on the front end surface of the guide sleeve 302, and the mounting plate is arc-shaped and has a shape matching the guide sleeve 302. The second magnetic member 502 is fixed to the mounting plate.

So configured, when the memory band 1 needs to be moved relative to the plastic part 2, the first magnetic member 501 and the second magnetic member 502 attract each other due to magnetism, so that the plastic part 2 is connected with the guide sleeve 302. In addition, the first magnetic member 501 and the second magnetic member 502 form an insertion fit due to the fitting slot 5011 and the fitting block 5021, thereby determining the connecting position of the plastic member 2 and the guide sleeve 302 to facilitate the subsequent connection of the telescopic rod 303 with the memory band 1. In addition, after the guide sleeve 302 is connected with the shaping piece 2, when the telescopic rod 303 moves relative to the guide sleeve 302, the memory belt 1 can be driven to move relative to the shaping piece 2, other tools are not needed to limit the movement of the shaping piece 2, and the operation difficulty of blocking blood vessel hemostasis is reduced. When the connection between the guide sleeve 302 and the shaping member 2 needs to be released, the guide sleeve 302 is driven to move in a direction deviating from the axial direction of the guide sleeve, so that an included angle is formed between the first magnetic member 501 and the second magnetic member 502, the first magnetic member 501 and the second magnetic member 502 are conveniently separated, and the connection between the guide sleeve 302 and the shaping member 2 is released.

The specific hemostasis process comprises the steps of extending the guide sleeve 302 to a blood vessel needing hemostasis, driving the telescopic rod 303 to slide relative to the guide sleeve 302, pushing the memory band 1 out of the guide sleeve 302 by using the telescopic sleeve, and enabling the memory band 1 to pass through the plastic part 2 to be wound and tied tightly on the blood vessel, so that the blood vessel is blocked. Then the connection between the guide sleeve 302 and the shaping piece 2 is released, and simultaneously the connection between the telescopic rod 303 and the memory belt 1 is released, so that the shaping piece 2 and the memory belt 1 are left in the body, and the guide sleeve 302 is taken away.

The procedure for removing the memory band 1 and the shaping element 2 is to extend the guiding sleeve 302 to the vascular site and the shaping element 2 is automatically connected to the guiding sleeve 302 by the cooperating structure 5. The telescopic rod 303 is connected with the connecting structure 4 on the memory band 1 through the clamping component 301, the telescopic rod 303 is driven to move relative to the guide sleeve 302, so that the memory band 1 is pulled towards the interior of the guide sleeve 302, the curled part of the memory band 1 passes through the shaping piece 2 to become flat and mostly contained in the guide sleeve 302, the memory band 1 does not block blood vessels any more, and the memory band 1 and the shaping piece 2 can leave the body along with the guide sleeve 302.

In the description of the present application, it is to be understood that the forward direction of "Y" in the drawings represents the forward direction, and correspondingly, the reverse direction of "Y" represents the rearward direction; the terms "Y" or "Y" indicate an orientation or positional relationship based on that shown in the drawings of the specification, which is merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A vascular occlusion device, comprising:

the memory band comprises a coiled initial state and a flat deformation state;

the plastic part comprises a plastic structure, the memory belt passes through the plastic structure and is arranged on the plastic part in a sliding mode, and the two sections of the two opposite sides of the plastic part are in different states respectively.

2. The vaso-occlusive device of claim 1, wherein the cross-sectional shape of the memory band in the initial state is a first shape, and the cross-sectional shape of the memory band in the deformed state is a second shape, the shape-imparting structure configured to switch the cross-sectional shape of the memory band between the first shape and the second shape.

3. The vascular occlusion device of claim 2, wherein the shaped structure comprises a shaped hole having a cross-sectional shape of the first shape and the second shape on opposite sides of the shaped hole, and wherein the cross-sectional shape of the shaped hole changes gradually from the first shape to the second shape along a centerline of the shaped hole.

4. The vascular occlusion device of claim 2 or 3, wherein the first shape comprises a rectangle and the second shape comprises a sector.

5. The vascular occlusion device of claim 1, further comprising a cushioning layer coating a surface of the memory band.

6. An occluder comprising a vascular occlusion device according to any of claims 1 to 5.

7. The occluder of claim 6, further comprising a force applying member and a connecting structure, wherein at least one end of the memory band is provided with the connecting structure, and wherein the connecting structure is adapted to connect to the force applying member.

8. The blocker according to claim 6, wherein said force applying member includes:

the guide sleeve is suitable for being connected with the shaping piece, and the part of the memory belt in the deformed state is suitable for extending into the guide sleeve;

the telescopic rod penetrates through the guide sleeve in a sliding manner and is suitable for being connected with the connecting structure;

and the control mechanism is in transmission connection with the telescopic rod so as to drive the telescopic rod to slide relative to the guide sleeve.

9. The occluder of claim 8, wherein the force applying member further comprises a snap-fit assembly comprising:

the connecting structure comprises a clamping groove, and the clamping strip is suitable for being inserted into the clamping groove;

the clamping handle is rotatably arranged on the telescopic rod;

the connecting rod is provided with a mounting groove along the length direction of the telescopic rod, the connecting rod is rotatably arranged in the mounting groove, one end of the connecting rod is connected with the clamping connecting rod, and one end of the clamping handle is abutted to the connecting rod;

and two ends of the elastic piece are respectively connected with the connecting strip and the telescopic rod.

10. The occluder of claim 6, further comprising a mating structure comprising:

the first magnetic part is connected with the shaping part, and a matching groove is formed in the first magnetic part;

the second magnetic part is connected with the force application part, a matching block is connected onto the second magnetic part, and the first magnetic part and the second magnetic part form inserting matching through the matching groove and the matching block.

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