CN116271454A - Antiskid gather power expansion sacculus system - Google Patents

Abstract

The invention discloses an anti-skid force-gathering expansion balloon system, which comprises a conveying pipe, a catheter, a balloon and an expansion net, wherein the catheter is telescopically arranged in the conveying pipe and connected to the balloon in a penetrating way, the expansion net is closely sleeved outside the balloon, the catheter is used for pushing the balloon and the expansion net out of the conveying pipe to realize interventional therapy and retracting the balloon and the expansion net which finish the interventional therapy into the conveying pipe, the expansion net is provided with a plurality of anchoring pieces, the plurality of anchoring pieces are attached to the expansion net and limited between the balloon and the conveying pipe when the balloon is positioned in the conveying pipe and in a contracted state, and the plurality of anchoring pieces are unfolded from one side of the expansion net, which is away from the balloon, to anchor vascular calcification lesions when the balloon is positioned outside the conveying pipe and in an expanded state, so that the anti-skid aim is achieved, and the whole balloon system is ensured to have better trafficability, and the interventional therapy process is more stable and efficient.

Description

Antiskid gather power expansion sacculus system

Technical Field

The invention relates to the technical field of medical instruments, in particular to an anti-slip force-gathering expansion balloon system.

Background

The vascular wall is calcified and deposited due to the angiogenesis lipid metabolism disorder, and the calcified substance tears the endothelium to cause thrombosis to cause symptoms such as acute hypertension, cerebral infarction, myocardial infarction and the like if no medicine or interventional treatment is carried out. The balloon is a medical instrument for interventional therapy aiming at vascular calcification lesions, and in actual interventional therapy, the balloon inevitably generates sliding displacement in the process of expanding the vascular calcification lesions, so that the treatment effect is reduced, and multiple interventional therapy is needed.

In order to solve the problem that sliding displacement easily occurs in the balloon interventional therapy process so as to improve the therapeutic effect, chinese patent CN215841140U discloses an anti-slip balloon catheter, and a plurality of convex points and/or convex strips are uniformly arranged on the surface of the balloon, so that the convex points or the convex strips can play the roles of increasing friction force and preventing the displacement of the balloon in the interventional therapy process, and the therapeutic effect is more remarkable. But set up bump or sand grip on the sacculus surface, can increase the holistic radial dimension of sacculus, can make the whole transport performance of sacculus relatively poor like this, can appear requiring the radial dimension of the conveyer pipe of carrying the sacculus to increase or be unfavorable for the phenomenon that the sacculus was released from the conveyer pipe in correspondence, therefore prior art can't take into account in anti-skidding performance and push performance.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an anti-skid force-gathering and expanding balloon system aiming at the defects in the prior art so as to overcome the technical defects pointed out in the background art.

According to the invention, an anti-slip force-gathering expansion balloon system is provided, which comprises a conveying pipe, a catheter, a balloon and an expansion net, wherein the catheter is telescopically arranged inside the conveying pipe and connected to the balloon in a penetrating way, the expansion net is closely sleeved outside the balloon, the catheter is used for pushing the balloon and the expansion net out of the conveying pipe to realize interventional therapy and retracting the balloon and the expansion net which finish interventional therapy into the conveying pipe, the expansion net is provided with a plurality of anchoring pieces, the plurality of anchoring pieces are attached to the expansion net and limited between the balloon and the conveying pipe when the balloon is positioned in the conveying pipe and is in a contracted state, and one side of the plurality of anchoring pieces, which is away from the balloon, of the expansion net is expanded around to anchor vascular calcification lesions when the balloon is positioned outside the conveying pipe and is in an expanded state.

Further, the proximal end of the anchoring piece is a fixed end and is fixedly connected with the expansion net, the distal end of the anchoring piece is a free end, when the balloon is positioned in the conveying pipe, the distal end of the anchoring piece is attached to the expansion net, and when the balloon is positioned outside the conveying pipe, the distal end of the anchoring piece is unfolded outwards.

Further, the anchor is a V-shaped member, the V-shaped open end of the V-shaped member forming the proximal end of the anchor, and the V-shaped closed end of the V-shaped member forming the distal end of the anchor.

Further, the anchoring element is arc-shaped, and the arc-shaped direction is deviated from one side of the central axis of the expansion net.

Further, the expansion net comprises a first connection net, an action net and a second connection net, the anchors are arranged on the outer circular surface of the action net, the balloon is twisted while being expanded in the process of converting the contracted state into the expanded state, and the first connection net and the second connection net are opened in an umbrella shape to expand and hold the action net and the anchors in the expansion process so as to twist the balloon only slightly.

Further, when the balloon is in a contracted state, the balloon is wound outside the catheter and provided with a plurality of folds, the first connecting net, the acting net and the second connecting net are contracted to the same minimum diameter and press the folds of the balloon, and when the balloon is in an expanded state, the acting net is formed into a cylinder shape, and the first connecting net and the second connecting net are formed into conical shapes.

Further, the action net includes a plurality of action wires and a plurality of containment rings spaced apart on an outer circumference of the plurality of action wires, each anchor separating two adjacent containment rings.

Further, there is no connection between any two anchors.

Further, the holding-down ring comprises a plurality of holding-down wires, each holding-down wire is connected between two adjacent action wires, and any two adjacent holding-down wires are respectively positioned at two sides of a corresponding action wire and share connection points, so that the plurality of holding-down wires are connected end to end in sequence and form an annular closed structure.

Further, when the balloon is in a contracted state, the acting wires are of a wavy open-loop structure with wave crests and wave troughs alternately connected, the holding wires are connected between the wave troughs of two adjacent acting wires, and the anchoring piece is connected between the wave crests of the two adjacent acting wires; or when the balloon is in a contracted state, the acting wires are of a wavy open-loop structure with alternately connected wave crests and wave troughs, the holding wires are connected between the wave crests of two adjacent acting wires, and the anchoring piece is connected between the wave troughs of two adjacent acting wires.

Compared with the prior art, the anchor can anchor vascular calcification lesions, so that the aim of skid resistance is fulfilled, the treatment effect is effectively ensured, and when the balloon is positioned in the conveying pipe and is in a contracted state, the anchor is attached to the expansion net and is limited between the balloon and the conveying pipe, so that the overall radial dimension of the balloon cannot be obviously increased, the radial dimension requirement on the conveying pipe is low, the whole balloon system can reach calcification lesions through complex tortuous vessels, the force required by pushing the balloon in the conveying pipe is smaller, the trafficability is good, and the technical obstacle that the conventional balloon system cannot be compatible in terms of skid resistance and pushing performance is broken.

Drawings

The invention will be more fully understood and its attendant advantages and features will be more readily understood by reference to the following detailed description, taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic overall structure of a first embodiment of the present invention.

Fig. 2 is a schematic view of an embodiment of the present invention with the delivery tube removed and the balloon in an inflated state.

Fig. 3 is a side view of fig. 2.

Fig. 4 is a schematic view of a portion of the catheter and catheter hub of fig. 2.

Fig. 5 is a schematic view of the structure of the expanded mesh of fig. 2.

Fig. 6 is a schematic view of the structure of the active net of fig. 5 deployed in a plane.

Fig. 7 is a schematic view of a balloon in a contracted state according to the first embodiment of the present invention.

Fig. 8 is a schematic view showing a structure in which an active net is unfolded to be flat in a contracted state in the first embodiment of the present invention.

Fig. 9 is a schematic view of a balloon in an inflated state with the delivery tube removed in accordance with a second embodiment of the present invention.

Fig. 10 is a schematic view of the expanded mesh of fig. 9.

Fig. 11 is a schematic view of the structure of the active net of fig. 10 deployed in a plane.

FIG. 12 is a schematic view of the containment ring of FIG. 10.

Fig. 13 is a schematic view showing a structure in which an active net is unfolded to be flat in a contracted state in the second embodiment of the present invention.

In the accompanying drawings: 1 is a conveying pipe, 2 is a guide pipe, 3 is a balloon, 4 is an expansion net, 5 is a guide pipe seat, 6 is a guide wire cavity, 7 is a filling cavity, 8 is an anchoring piece, 9 is a first connecting net, 10 is an action net, 11 is a second connecting net, 12 is an action wire, 13 is a holding-down ring, 14 is a first connecting wire, 15 is a second connecting wire, 16 is an elastic ring, and 17 is a pulling wire.

It should be noted that the drawings are for illustrating the invention and are not to be construed as limiting the invention. Note that the drawings representing structures may not be drawn to scale. Also, in the drawings, the same or similar elements are denoted by the same or similar reference numerals.

Detailed Description

In order that the invention may be more readily understood, a detailed description of the invention is provided below along with specific embodiments and accompanying figures.

It should be noted that the terms "proximal" and "distal" in the present invention should be understood as referring to "proximal" as viewed from the direction of the attending physician, i.e., corresponding to the "left" as referred to with reference to the drawings, and "distal" as referred to herein, as referring to the end remote from the attending physician, i.e., corresponding to the "right" as referred to with reference to the drawings.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "plurality" as used herein includes two and more.

Embodiment one: as shown in fig. 1-8, the force-accumulating and expanding balloon system of the present embodiment includes a delivery tube 1, a catheter 2, a balloon 3 and an expanding net 4, the proximal end of the catheter 2 is fixedly connected with a catheter seat 5, the distal end of the catheter 2 is telescopically disposed inside the delivery tube 1 and is connected to the balloon 3 in a penetrating manner, the catheter 2 has a guide wire cavity 6 for a guide wire to pass through and an expanding cavity 7 for expanding the balloon 3, the guide wire cavity 6 and the expanding cavity 7 are all disposed through the catheter seat 5, the balloon 3 is hermetically sleeved outside the catheter 2, the inside of the balloon 3 is communicated with the expanding cavity 7, the balloon 3 has a contracted state when not filled and an expanded state when filled, the balloon 3 is a semi-compliant balloon or a non-compliant balloon, and is suitable for breaking vascular calcification lesions, the expanding net 4 is tightly sleeved outside the balloon 3 and has elasticity and can be contracted and expanded along with the contraction of the balloon 3, that is, the expanding net 4 is movably wrapped outside the balloon 3, and can automatically intervene in the expansion of the balloon 3, and the force of the balloon 3 can be automatically removed from the delivery tube 1 by the balloon 3 after the balloon 3 is completely expanded by the balloon 3 and the expanding net 4 and the balloon 1 and the force of the delivery tube 1 is completely expanded by the balloon 4.

The expansion net 4 is provided with a plurality of anchoring pieces 8, when the balloon 3 is positioned in the conveying pipe 1 and is in a contracted state, the anchoring pieces 8 are attached to the expansion net 4 and limited between the balloon 3 and the conveying pipe 1, and when the balloon 3 is positioned outside the conveying pipe 1 and is in an expanded state, one side, deviating from the balloon 3, of the expansion net 4 of the anchoring pieces 8 is expanded to the periphery to anchor vascular calcification lesions. So, on one hand, the anchor 8 can anchor vascular calcification lesion, the purpose of antiskid is realized like this, effectively guaranteed the treatment effect, on the other hand, balloon 3 is located in conveyer pipe 1 and is in the shrink state, anchor 8 is with expanding net 4 laminating and being restricted between balloon 3 and conveyer pipe 1, namely do not outwards expand, can not obviously increase the whole radial dimension of balloon 3 like this, radial dimension to conveyer pipe 1 requires to be low like this, make whole balloon system can reach calcification lesion through complicated tortuosity blood vessel, and the required power of balloon 3 propelling movement in conveyer pipe 1 is also less, consequently still have better trafficability characteristic, so this embodiment breaks through conventional balloon system and can't compromise technical obstacle in aspect of antiskid performance and propelling movement performance.

The proximal end of the anchoring element 8 is a fixed end and is fixedly connected with the expansion net 4, the distal end of the anchoring element 8 is a free end, when the balloon 3 is positioned in the conveying pipe 1, the distal end of the anchoring element 8 is attached to the expansion net 4, namely, the distal end is not expanded outwards, and when the balloon 3 is positioned outside the conveying pipe 1, the distal end of the anchoring element 8 is automatically expanded outwards to anchor vascular calcification lesions due to the disappearance of limiting force, so that the anti-slip purpose is achieved. The anchor 8 is the V type spare, and the V type open end of V type spare forms the proximal end of anchor 8, and the V type end of sealing of V type spare forms the distal end of anchor 8, because the distal end of anchor 8 is the free end, consequently set up the distal end of anchor 8 as V type end of sealing can effectively prevent that anchor 8 from damaging normal blood vessel, and anchor 8 is the arc moreover, and whole V type spare is whole to be arc and the skew of arc direction expands central axis one side of net 4 promptly, is favorable to improving the anchoring effect of anchor 8 like this.

The expansion net 4 comprises a first connection net 9, an action net 10 and a second connection net 11, wherein a plurality of anchoring pieces 8 are arranged on the outer circular surface of the action net 10, the proximal end of the first connection net 9 and the distal end of the second connection net 11 are both fixed on the catheter 2, the action net 10 essentially plays a role of breaking calcification lesions, and the action net 10 is connected between the distal end of the first connection net 9 and the proximal end of the second connection net 11, namely, the first connection net 9, the action net 10 and the second connection net 11 are sequentially connected from the proximal end to the distal end to form the expansion net 4. When the balloon 3 is not inflated and is in a contracted state, the balloon 3 is wound outside the catheter 2 and has a plurality of folds, and the first connecting net 9, the acting net 10 and the second connecting net 11 are contracted to the same minimum diameter and press the folds of the balloon 3, so that the whole balloon 3 has the minimum radial dimension and can reach calcified lesions through complex tortuous vessels, thereby having better trafficability. When the balloon 3 is inflated and in an inflated state, the proximal end and the distal end of the balloon 3 are conical, the middle section of the balloon 3 between the proximal end and the distal end is cylindrical, the acting net 10 is formed into a cylinder and is arranged corresponding to the middle section of the balloon 3, and the first connecting net 9 and the second connecting net 11 are both formed into conical shapes and are respectively arranged corresponding to the proximal end and the distal end of the balloon 3. The acting net 10 has a plurality of cross-fixed grids, the cross-fixed grids enable the acting net 10 not to be excessively twisted in the expansion process so as to ensure that the energy for crushing calcified lesions is not lost, and enable the acting net 10 not to be twisted, namely not to slip with calcified lesions in the crushing calcified lesions, and enable the acting net 10 and the second connecting net 11 to be opened in an umbrella shape to expand, namely not to twist, in the process of converting the balloon 3 from a contracted state to an expanded state, because the balloon 3 is wound and forms a plurality of folds in the contracted state, the balloon 3 is twisted, namely expanded and twisted at the same time, at the moment, the acting net 10 is expanded and twisted under the action of the middle section of the balloon 3, and although the cross-fixed grids enable the acting net 10 not to be excessively twisted in the expansion process, the acting net 10 is still possibly twisted greatly, and the first connecting net 9 and the second connecting net 11 are in the umbrella shape to be opened to expand, namely not twisted, so that the acting net 10 and the anchors 8 in the expansion process are only slightly twisted, and thus the anchoring effect is greatly improved when the acting net 10 faces the crushing effect, and the anchoring effect 8 is greatly improved. Therefore, the balloon 3 can be wound into the folds to ensure the passing performance of complex lesions, the crushing energy of the expanded mesh 4 can be ensured not to be influenced by the torsional force of the folded balloon 3 in the expansion process, and the anchoring piece 8 is added to realize the anti-slip purpose, so that the technical obstacle that the conventional balloon 3 cannot be considered in the aspects of passing performance, crushing effect and anti-slip performance is broken, namely, the embodiment has better passing performance, and also has better calcified lesion crushing effect and anti-slip performance.

The action net 10 comprises a plurality of action wires 12 and a plurality of holding-down rings 13, wherein the holding-down rings 13 are arranged on the outer circumferences of the action wires 12 at intervals, the action wires 12 and the holding-down rings 13 are arranged in a crossing manner and form a crossing fixing structure, each anchor 8 separates two adjacent holding-down rings 13, and any two anchors 8 are not connected, so that each anchor 8 is in a free state and can play a better anchoring role. Correspondingly, the first connecting wire 9 comprises a plurality of first connecting wires 14, the number of the first connecting wires 14 is consistent with that of the acting wires 12, the proximal ends of the first connecting wires 14 are fixedly connected with the catheter 2, the distal ends of the first connecting wires 14 are fixedly connected with the proximal ends of the corresponding acting wires 12, the plurality of first connecting wires 14 are all formed into a straight line shape, and when the balloon 3 is inflated, the plurality of first connecting wires 14 are radially and obliquely arranged to form the conical first connecting wire 9. Similarly, the second connection net 11 includes a plurality of second connection wires 15, the number of the second connection wires 15 is consistent with the number of the action wires 12, the distal ends of the second connection wires 15 are fixedly connected with the catheter 2, the proximal ends of the second connection wires 15 are fixedly connected with the distal ends of the corresponding action wires 12, the plurality of second connection wires 15 are also formed into straight lines, and when the balloon 3 is inflated, the plurality of second connection wires 15 are radially and obliquely arranged to form the conical second connection net 11. In addition, the plurality of second connecting wires 15 and the plurality of first connecting wires 14 are substantially symmetrical about the longitudinal axis of the balloon 3 such that each acting wire 12 is connected between the symmetrical first connecting wires 14 and second connecting wires 15, and such that bends for further restraining small twisting of the acting wire 12 are formed between the proximal end of the acting wire 12 and the corresponding first connecting wire 14, and between the distal end of the acting wire 12 and the corresponding second connecting wire 15, which can further improve the torsional resistance of the acting wire 12 and the anchor 8 during inflation. In order to achieve that the expansion net 4 is always and tightly sleeved outside the balloon 3, the catheter 2 is provided with the elastic ring 16, the elastic ring 16 has elasticity and can generate deformation compensation, the proximal end of the elastic ring 16 is fixed on the catheter 2, the distal end of the elastic ring 16 is a free end, the elastic ring 16 is formed into a conical ring with small proximal end and large distal end, the proximal ends of the plurality of first connecting wires 14 of the first connecting net 9 of the expansion net 4 are fixedly connected to the distal end of the elastic ring 16, thus when the balloon 3 is not filled and contracted to the longest, the elastic ring 16 is correspondingly and adaptively stretched, and when the balloon 3 is filled and expanded to the shortest, the elastic ring 16 is correspondingly and adaptively shortened, so that the whole expansion net 4 can be passively expanded and automatically contracted.

The retaining ring 13 comprises a plurality of retaining wires 17, each retaining wire 17 is connected between two adjacent acting wires 12, and any two adjacent retaining wires 17 are respectively positioned at two sides of a corresponding acting wire 12 and share a connecting point, so that the plurality of retaining wires 17 are sequentially connected end to form an annular closed structure, specifically, when the balloon 3 and the acting net 10 are in a contracted state, the acting wires 12 are of a wavy open-loop structure with alternately connected wave crests and wave troughs, the retaining wires 17 are of a wavy annular closed-loop structure with alternately connected wave crests and wave troughs, the retaining wires 17 are connected between wave troughs of two adjacent acting wires 12, the anchoring piece 8 is connected between wave crests of two adjacent acting wires 12, and of course, the retaining wires 17 can also be connected between wave crests of two adjacent acting wires 12, and the anchoring piece 8 is connected between wave troughs of two adjacent acting wires 12; when the balloon 3 and the action net 10 are in an inflated state, the action wire 12 has a linear open-loop structure, and the holding wire 17 has a circular closed-loop structure. In this way, when the balloon 3 and the action net 10 are in the contracted state, the plurality of traction wires 17 are connected end to end in sequence to form the traction ring 13 of the wavy annular closed structure, the first connecting wire 14, the second connecting wire 15 and the traction wires 17 all play the role of the traction wires 12, the first connecting wire 14 and the second connecting wire 15 are used for traction wires 12 to twist, the traction wires 17 are used for traction the traction wires 12 to be intertwined with each other and the traction wires 12 to twist, and when the balloon 3 is in the expanded state, the traction wires 17 are in an arc shape.

When in use, the delivery tube 1 containing the catheter 2, the balloon 3 and the expanded net 4 is delivered to the calcified vascular lesion by means of the guide wire penetrating through the guide wire cavity 6, in the delivery process, the balloon 3 is not filled and is in a contracted state, the balloon 3 in the contracted state is wound outside the catheter 2 and is provided with a plurality of folds, the expanded net 4 contracts and presses the folds of the balloon 3, a plurality of anchoring pieces 8 are attached to the expanded net 4 and are limited between the balloon 3 and the delivery tube 1, so that the balloon 3 has the smallest radial dimension as a whole, and the radial dimension requirement on the delivery tube 1 is low, so that the delivery tube 1 can reach the calcified lesion through complex tortuous vessels. After the balloon 3 and the expanded mesh 4 are pushed out of the delivery tube 1 through the catheter 2 after delivery, the expanded mesh 4 wrapped with the balloon 3 is just positioned at a calcified lesion, the anchoring piece 8 on the expanded mesh 4 is automatically unfolded outwards due to disappearance of limiting force, at the moment, the balloon 3 is inflated by inputting pressure medium into the inflation cavity 7 through the catheter seat 5, the balloon 3 is inflated under the action of internal pressure, the expanded mesh 4 is inflated along with inflation of the balloon 3, the vascular calcified lesion is anchored through the anchoring piece 8, the balloon 3 is repeatedly inflated for a plurality of times, the balloon 3 is restored to the original state by sucking the balloon 3 through the catheter seat 5 under negative pressure, the expanded mesh 4 is linearly and tightly covered on the surface of the balloon 3 along with disappearance of inflation pressure of the balloon 3, and finally the balloon 3 and the expanded mesh 4 are retracted into the delivery tube 1 through the catheter 2, and the vascular of the delivery tube 1 is withdrawn.

Embodiment two: as shown in fig. 9-13, the difference between the embodiment and the embodiment is that the structure of the retaining ring 13 is different, the retaining ring 13 of the embodiment forms a wavy annular closed structure with alternately connected wave crests and wave troughs when the balloon 3 and the action net 10 are in a contracted state, the retaining wires 17 of the retaining ring 13 are S-shaped, a plurality of retaining wires 17 are connected end to end and form a wavy annular closed structure, each retaining wire 17 is connected between the wave troughs and wave crests of two adjacent action wires 12, the anchor 8 is connected between the wave crests of two adjacent action wires 12, when the balloon 3 and the action net 10 are in an expanded state, the retaining wires 17 are arc-shaped, and the plurality of retaining wires 17 are connected end to end and still form a wavy annular closed structure, so that the arrangement can ensure that the retaining force is proper, excessive retaining is avoided, and torsion cannot be inhibited.

Other structures and advantageous effects of the present embodiment are the same as those of the first embodiment, and will not be described here again.

It will be appreciated that although the invention has been described above in terms of preferred embodiments, the above embodiments are not intended to limit the invention. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art without departing from the scope of the technology, or the technology can be modified to be equivalent. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.

Claims (10)

1. The utility model provides an antiskid gathers power expansion sacculus system, including conveyer pipe (1), pipe (2), sacculus (3) and expansion net (4), pipe (2) telescopically set up inside conveyer pipe (1) and cross-under on sacculus (3), expansion net (4) hug closely the cover and establish the outside at sacculus (3), pipe (2) are used for ejecting conveyer pipe (1) with sacculus (3) and expansion net (4) in order to realize intervention treatment and will accomplish the sacculus (3) of intervention treatment and expansion net (4) withdraw to conveyer pipe (1) in, a serial communication port, be equipped with a plurality of anchors (8) on expansion net (4), sacculus (3) are located conveyer pipe (1) and when being in the shrink state, a plurality of anchors (8) laminate and are restricted between sacculus (3) and conveyer pipe (1) with expansion net (4), sacculus (3) are located conveyer pipe (1) and when being in the expansion state, a plurality of anchors (8) deviate from sacculus (3) anchor one side of expansion net (4) to the pathological change all around with expansion.

2. The focused force expanded balloon system according to claim 1, wherein the proximal end of the anchor (8) is a fixed end and is fixedly connected with the expanded mesh (4), the distal end of the anchor (8) is a free end, the distal end of the anchor (8) is attached to the expanded mesh (4) when the balloon (3) is positioned in the delivery tube (1), and the distal end of the anchor (8) is deployed outwardly when the balloon (3) is positioned outside the delivery tube (1).

3. A force concentrating and expanding balloon system according to claim 2, wherein the anchor (8) is a V-shaped member, the V-shaped open end of the V-shaped member forming the proximal end of the anchor (8) and the V-shaped closed end of the V-shaped member forming the distal end of the anchor (8).

4. A force concentrating and expanding balloon system according to claim 2, wherein the anchor (8) is arc-shaped and the arc direction is offset to one side of the central axis of the expanded mesh (4).

5. A force concentrating and expanding balloon system according to claim 2, wherein the expanding mesh (4) comprises a first connecting mesh (9), an acting mesh (10) and a second connecting mesh (11), wherein a plurality of anchoring elements (8) are arranged on the outer circumferential surface of the acting mesh (10), wherein the balloon (3) is twisted while being expanded during the transition from the contracted state to the expanded state, and wherein the first connecting mesh (9) and the second connecting mesh (11) are umbrella-like opened for expansion and are held in torsion only by a small extent by the acting mesh (10) and the plurality of anchoring elements (8) during the expansion.

6. A force concentrating and expanding balloon system according to claim 5, wherein the balloon (3) is wound around the outside of the catheter (2) and has a plurality of folds, the first (9), the acting (10) and the second (11) connecting webs all contract to the same minimum diameter and press the folds of the balloon (3), the acting web (10) is formed in a cylindrical shape and the first (9) and the second (11) connecting webs are all formed in a conical shape when the balloon (3) is in an inflated state.

7. The focused force dilation balloon system of claim 5, wherein the action net (10) includes a plurality of action wires (12) and a plurality of containment rings (13), the plurality of containment rings (13) being spaced apart on an outer circumference of the plurality of action wires (12), each anchor (8) separating two adjacent containment rings (13).

8. A force-accumulating dilation balloon system according to claim 7, wherein there is no connection between any two anchors (8).

9. The force concentrating and expanding balloon system according to claim 7, wherein the retaining ring (13) comprises a plurality of retaining wires (17), each retaining wire (17) being connected between two adjacent action wires (12), and any two adjacent retaining wires (17) being located on either side of a corresponding one of the action wires (12) and sharing a connection point, such that the plurality of retaining wires (17) are connected end to end in sequence and form an annular closed structure.

10. A force concentrating and expanding balloon system according to claim 9, wherein when the balloon (3) is in a contracted state, the action wires (12) are of a wavy open-loop structure with alternately connected peaks and valleys, the holding wires (17) are connected between the valleys of two adjacent action wires (12), and the anchor (8) is connected between the peaks of two adjacent action wires (12); or when the balloon (3) is in a contracted state, the acting wires (12) are of wavy open-loop structures with wave crests and wave troughs alternately connected, the holding wires (17) are connected between the wave crests of two adjacent acting wires (12), and the anchoring piece (8) is connected between the wave troughs of two adjacent acting wires (12).

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