CN115154852A - Anchoring balloon catheter - Google Patents

Abstract

The invention provides an anchoring balloon catheter, which relates to the technical field of medical instruments and comprises: the anchoring device is arranged on the outer wall of the catheter; the anchoring device includes a shape-changing portion disposed coaxially with the catheter, collapsible into a tubular configuration coaxial with the catheter, and expandable into an expanded configuration expanded radially outward. When the anchoring balloon catheter provided by the invention is used, the catheter can be fixed for one time by using the first balloon, and then the catheter can be fixed for the second time by using the anchoring device on the balloon catheter, so that the risk of catheter displacement is reduced, and the accuracy of an operation is improved.

Description

Anchoring balloon catheter

Technical Field

The invention relates to the technical field of medical instruments, in particular to an anchoring balloon catheter.

Background

In the treatment of cardiovascular diseases, a balloon catheter is often used for expanding a blood vessel, but when the balloon completely blocks the blood vessel, the balloon risks displacement due to the influence of blood pressure, and the displacement of the balloon further causes failure of the operation. For the shock wave balloon catheter with a therapeutic effect, a power supply generator outside the body needs to be connected during use, so that any device such as a wire which is slightly pulled or moved during operation can cause the part of the balloon catheter inside the body to move.

Disclosure of Invention

The invention aims to provide an anchoring balloon catheter, which solves the technical problem that the existing balloon catheter is influenced by blood pressure or other dragging force to cause easy displacement of a balloon.

The embodiment of the invention provides an anchoring balloon catheter, which comprises: the outer wall of the catheter is provided with a first balloon; the anchoring device includes a shape-changing portion disposed coaxially with the catheter, and is collapsible into a tubular configuration coaxial with the catheter or expandable into an expanded configuration expanding radially outward.

Furthermore, the deformation part is a pipe network structure woven by memory metal wires and provided with a far end and a near end, and the radial dimension of the deformation part is gradually reduced from the middle to the two ends; the anchoring device also comprises a first tube body, wherein the far end of the deformation part is fixed on the outer wall of the first tube body, and the near end of the deformation part is movably sleeved on the outer wall of the first tube body; the catheter and the anchoring device are sleeved with each other, and the first balloon can be expanded outwards along the radial direction; actuating the proximal end of the shape-changing portion axially along the first tubular body causes the shape-changing portion to collapse into a tubular configuration or expand into an expanded configuration that expands radially outward.

Further, the anchoring device further comprises a second tube body, wherein the first tube body penetrates from the near end of the second tube body, penetrates from the far end of the second tube body and penetrates out of the second tube body from the deformed part; the proximal end of the deformable portion is connected to the second tubular body and is movable axially relative to the first tubular body to cause the deformable portion to contract into a tubular configuration or expand into an expanded configuration that expands radially outwardly.

Further, the anchoring device further comprises a locking mechanism, the locking mechanism comprises a locking head and a locking cap, and the locking head is arranged on the outer wall of the first tube body close to the proximal end; the locking cap is arranged at the near end of the second tube body; the locking head and the locking cap can be fixedly connected, so that the first pipe body and the second pipe body are relatively fixed.

Furthermore, the outer wall of the locking head is provided with an external thread, the locking cap is provided with an inner cavity, the inner wall of the locking cap is provided with an internal thread, and the internal thread is matched with the external thread.

Further, anchoring sacculus pipe still includes the buckle, the buckle is cylindricly and has elasticity, has on its lateral wall to run through to the outside from the inner chamber, and extend to the breach that runs through both ends along the axial, the breach width is less than the external diameter of first body, the buckle is arranged in establishing the inner chamber with locking cap and locking head between the first body card from the breach.

Furthermore, the anchoring device also comprises a second tube body and a third tube body, and a first connecting part is arranged at the position, close to the far end, of the first tube body; the second tube body, the deformation part and the third tube body are sequentially connected from the near end to the far end to form a coaxial tubular structure; the third pipe body is provided with a second connecting part which can be fixedly connected with the first connecting part; the first pipe body penetrates through the near end of the second pipe body, sequentially penetrates through the second pipe body and the deformation part, and is connected with the third pipe body through the fixed connection between the first connecting part and the second connecting part, so that the far end of the deformation part is fixed on the outer wall of the first pipe body; the first tube body is axially moved relative to the second tube body to drive the third tube body to move relative to the second tube body, and further drive the deformed portion to contract into a tubular structure or expand into an expanded structure which expands radially and outwardly.

Further, the first connecting part is an external thread arranged on the outer wall of the first pipe body; the second connecting portion are arranged on the inner thread of the inner wall of the third pipe body.

Further, the anchoring device also comprises at least one traction wire, and one end of the traction wire is fixedly connected with the proximal end of the deformation part; the other end extends to the proximal end of the first tube, and the deformable portion is adapted to be collapsed into a tubular configuration or expanded into an expanded configuration extending radially outwardly by operation of a pull wire.

Further, the radial dimension of the anchoring device is smaller than the inner diameter dimension of the catheter, and the anchoring device penetrates from the proximal end of the catheter, penetrates from the distal end of the catheter and penetrates out of the catheter to the deformation part; or the like, or, alternatively,

the radial size of the catheter is smaller than the inner diameter size of the first tube body, and the catheter penetrates from the near end of the first tube body, penetrates out from the far end of the first tube body, penetrates out of the first balloon and is arranged outside the first tube body.

When the anchoring balloon catheter provided by the embodiment of the invention is used, the first balloon can be used for fixing the catheter for one time, and then the anchoring device on the balloon catheter can be used for fixing the catheter for the second time, so that the risk of catheter displacement is reduced. The balloon catheter can not be easily displaced in the body by slightly pulling or moving devices such as a guide wire and the like in the operation process, so that the accuracy of the operation is improved; the anchoring balloon catheter is provided with the locking device, so that the deformation part of the anchoring device can be locked, and the length and the expansion size of the deformation part can be conveniently adjusted by adjusting the screwing position between the locking head and the locking cap in the locking device, so that the anchoring balloon catheter provided by the invention is suitable for the operation of different lumens; through setting up the buckle of different specifications, can further the expansion diameter of accurate control deformation part.

Drawings

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural view of an anchoring balloon catheter provided by the present invention.

Fig. 2 is a schematic view of the assembly of the anchoring balloon catheter in the first embodiment of the present invention.

Fig. 3 is a schematic structural view of an anchoring device according to a first embodiment of the present invention.

FIG. 4 is a bottom view of the clasp in a second embodiment of the invention.

Fig. 5 is a schematic structural view of an anchoring device according to a third embodiment of the present invention.

FIG. 6 is a radial cross-sectional view of the first tubular body in a third embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a first tube according to a fourth embodiment of the present invention.

Fig. 8 is a schematic structural view of a second tube according to a fourth embodiment of the present invention.

Fig. 9 is a schematic view of a fourth embodiment of the present invention showing the assembled anchoring device.

Fig. 10 is a schematic structural view of an anchoring balloon catheter in a fifth embodiment of the present invention.

Fig. 11 is a schematic structural view of an anchoring balloon catheter in a ninth embodiment of the invention.

Icon: 10-anchoring balloon catheter; 100-a catheter; 110-a first balloon; 200-an anchoring device; 210-a deformation portion; 220-a first tube; 221-a traction wire cavity; 222-external threads; 230-a second tube; 240-a third tubular body; 300-a locking mechanism; 310-a locking head; 320-a locking cap; 400-buckling; 410-a notch; 500-second balloon.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

For convenience of explanation, it is defined herein that after the balloon catheter is inserted into the patient, the end away from the operator is the front end, and the end close to the operator is the rear end.

As shown in fig. 1, the present invention provides an anchoring balloon catheter comprising: the catheter comprises a catheter 100 and an anchoring device 200, wherein an expandable first balloon 110 is arranged on the outer wall of the catheter 100; the anchoring device 200 comprises a shape-changing part 210, the shape-changing part 210 is arranged coaxially with the catheter 100 and can be positioned at the front end or the rear end of the first balloon 110, the shape-changing part 210 has two states of contraction and expansion, and when in the contraction state, the shape-changing part 210 is contracted into a tubular structure which is coaxial with the catheter 100; when in the deployed state, the shape-changing portion 210 expands radially outward into a spherical or ellipsoidal configuration, thereby anchoring within the vessel.

When the anchoring balloon catheter provided by the invention is used, the first balloon 110 of the anchoring balloon can abut against the inner wall of a blood vessel after being expanded, so that the catheter 100 can be fixed and the subsequent treatment can be realized, and the deformation part 210 of the anchoring device 200 can also abut against the inner wall of the blood vessel after being expanded, so that the fixing reliability of the catheter 100 is further enhanced, and the risk of displacement of the catheter 100 is reduced. The balloon catheter is secondarily fixed through the first balloon 110 and the deformation part 210, and the displacement of the balloon catheter in the body cannot be easily caused by slightly pulling or moving a wire and other equipment in the operation process, so that the operation accuracy is improved.

In the present invention, the deformation part 210 may be directly provided on the outer wall of the guide tube 100; or on the outer wall of other tubes, and forms a coaxial integral structure with the catheter 100 by the connection or sleeve connection of other tubes and the catheter 100.

The shape-changing portion 210 may be an inflatable balloon or a tubular structure woven from memory metal wires.

In one embodiment of the present invention, the deformation portion 210 is woven from memory metal wires. Specifically, the memory metal wires are woven into a net pipe structure and then sleeved on a shaping mold, and the net pipe structure is shaped into an expanded net disk structure through heat treatment. The deformed portion 210 after heat treatment setting is stretched from both ends to be stretched into a mesh tube structure, and the deformed portion 210 can be restored into a set mesh disc structure after the applied tension is removed.

In another embodiment of the present invention, the deformation portion is a pipe network structure woven by memory metal wires and is disposed on the outer wall of the conduit. Specifically, the deformation part is positioned on the outer wall of the catheter at the far end of the first balloon, one end of the deformation part is fixed on the outer wall of the catheter, the other end of the deformation part is movably sleeved on the catheter, and the deformation part can be contracted and expanded by moving the movable end of the deformation part along the axial direction of the catheter.

Preferably, the far end of the deformation part is fixedly connected to the outer wall of the catheter, the near end is movably sleeved on the outer wall of the catheter, the balloon catheter further comprises a traction wire, one end of the traction wire is fixed to the near end of the deformation part, the other end of the traction wire penetrates through the near end of the balloon catheter, and contraction and expansion of the deformation part can be achieved by drawing or loosening the traction wire.

First embodiment

In the first embodiment of the present invention, as shown in fig. 2 and 3, the anchoring device 200 further includes a first tube 220 and a second tube 230, wherein the outer diameter of the first tube 220 is slightly smaller than the outer diameter of the second tube 230; the deformation part 210 is a pipe network structure woven by memory metal wires, is sleeved on the outer wall of the first pipe body 220 near the front end, and is contracted to the same outer diameter as the first pipe body along the axial direction to two ends along the radial dimension, the far end of the deformation part 210 is fixedly connected on the outer wall of the first pipe body 220, and the near end is movably sleeved on the outer wall of the first pipe body 220; the second tube 230 is sleeved outside the first tube 220 from the distal end of the first tube 220, and the distal end of the second tube is connected to the proximal end of the deformation portion 210; moving the second tube 230 axially and proximally along the first tube 220 can drive the proximal end of the deformation portion 210 to move proximally along the first tube 220, so that the deformation portion 210 is contracted into a mesh tube structure; moving the second tube 230 distally along the first tube 220, the distal end of the second tube 230 pushes the proximal end of the deformed portion 210 to move towards the distal end of the first tube 220, so that the deformed portion is expanded into a mesh-disc structure. The radial size of the expanded deformation part can be adjusted by the axial movement length of the second tube body 230 along the first tube body 220, so that the anchoring balloon catheter provided by the invention can adapt to the treatment of various lumens with different sizes.

There are various ways of connecting the distal end of the second tube 230 to the proximal end of the deformation portion 210.

In this embodiment, the proximal end of the deformation portion 210 is fixedly connected to the distal end of the second tube 230 by a fixing wire.

In an alternative embodiment of the present invention, the inner diameter of the distal end port of the second tube 230 is smaller than the inner diameter of the main body, larger than the radial dimension of the distal end of the deformation portion 210, but slightly smaller than the radial dimension of the proximal end of the deformation portion 210. When the second tube 230 is moved proximally along the axial direction of the first tube 220, the distal port of the second tube 230 is engaged with the proximal end of the deformation portion 210, so as to drive the deformation portion 210 to stretch axially; when the second tube 230 is moved to the far end along the axial direction of the first tube 220, the pulling force of the far end port of the second tube 230 to the near end of the deformation part is gradually removed, and the deformation part 210 is expanded to be a mesh disc structure under the action of the self deformation force.

Further, the anchoring balloon catheter further comprises a locking mechanism 300, the locking mechanism comprises a locking head 310 and a locking cap 320 matched with the locking head, the locking head 310 is arranged on the outer wall of the first tube body 220 near the proximal end; the locking cap 320 is connected to the proximal end of the second tube 230; the locking head 310 and the locking cap 320 may be fixedly connected to fix the second tube 230 and the first tube 220 relatively. The locking head and the locking cap provided by the embodiment can form a locking mechanism, and before the operation is started, the locking head 310 and the locking cap 320 are fixedly connected to fix the pipe network structure of the deformation part 210, so that the operation is facilitated.

Further, an external thread is arranged on the outer wall of the locking head 310, the locking cap 320 has an inner cavity, an internal thread is arranged on the inner wall of the locking cap, and the internal thread and the external thread are matched with each other. As the proximal end of the second body 230 is gradually moved closer to the proximal end of the first body 220, the locking cap 320 and locking head 310 are gradually tightened together; when the locking cap 320 and the locking head 310 are gradually unscrewed, the second tube 230 is gradually moved in a distal direction along the first tube 220. The scheme is favorable for controlling the release length of the release speed of the deformation part 210 and is favorable for operation.

In this embodiment, the shape-changing portion 210 is located at the front end of the first balloon 110. Specifically, after the second tube 230 is sleeved on the first tube 220 to form the anchoring device 200, the anchoring device 200 is inserted into the proximal end of the catheter 100, and the deformed portion 210 is inserted out of the distal end of the catheter 100, so that the catheter 100 and the anchoring device 200 can be connected.

It should be noted that a lumen penetrating to the end in the axial direction is provided in the anchoring device 200, and is used for threading a guide wire, performing body fluid suction, drug delivery, or other functions. Therefore, a first tube cavity penetrating along the axial direction is arranged in the first tube body 220, and a first through hole communicated with the first tube cavity is arranged in the locking head 310; a second lumen penetrating along the axial direction is formed in the second tube 230, and the inner cavity of the locking cap 320 is communicated with the second lumen.

Second embodiment

With continued reference to fig. 1, a second embodiment of the invention provides an anchoring balloon catheter 10 that differs from the first embodiment in that the anchoring device 200 of this embodiment does not include a second tube, and the control of the contraction and expansion of the shape-changing portion 210 is achieved by the catheter 100; the locking cap 320 is disposed at the proximal end of the catheter 100. Compare with the technical scheme that first embodiment set up the second body, the anchoring sacculus pipe structure of this embodiment is simpler, can effectively reduce the radial dimension of sacculus pipe, when locking head and locking cap fixed connection, enables anchoring sacculus pipe and connects into overall structure to be favorable to the operation.

Further, referring to fig. 1 and 4, the anchoring balloon catheter 10 further includes a buckle 400, the buckle 400 is cylindrical and elastic, a notch 410 is formed on a side wall of the buckle 400, the notch 410 penetrates through the inner cavity to the outside and extends to two ends along the axial direction, the width of the notch 410 is smaller than the outer diameter of the first tube 220, and the buckle 400 is used for clamping the first tube between the locking cap 320 and the locking head 310 in the inner cavity from the notch 410. The present solution provides a buckle 400 for limiting the distance between the locking cap 320 and the locking head 310, thereby controlling the spread of the deformed portion 210.

In operation, when the locking cap 320 is completely separated from the locking head 310 and the deformation portion 210 is spread to a suitable diameter, the notch 410 of the clip 400 is aligned with the first tube 220, and the first tube 220 is clamped in the inner cavity of the clip 400, so that the clip 400 performs a limiting function.

In this embodiment, the number of the fasteners 400 can be multiple as accessories, the plurality of fasteners 400 have different lengths, and different fasteners 400 are selected to be clamped between the locking cap 320 and the locking head 310, so that the deformation portion 210 has different expansion radial sizes, and is suitable for human body lumens with different inner diameters.

Specifically, the different distances between the locking cap 320 and the locking head 310 correspond to different radial dimensions of the deformed portion 210 when deployed. In this embodiment, different clip lengths are designed according to the deformation size of the deformation portion 210 when the deformation portion is unfolded, and the radial size of the deformation portion can be conveniently adjusted by selecting the clip 400.

Third embodiment

Referring to fig. 5 and 6, a third embodiment of the present invention provides another anchoring balloon catheter, wherein the anchoring device comprises a first tube 220 and a deformation portion 210 disposed near the distal end of the first tube 220, the deformation portion 210 has a tubular mesh structure woven by memory metal wires, and the distal end of the deformation portion is fixed on the outer wall of the first tube 220 in a shrinkage manner; the proximal end of the tube is movably sleeved on the first tube body 220 after being contracted. The anchoring balloon catheter provided in this embodiment further includes three traction wires (not shown), and three traction wire cavities 221 penetrating to the position of the deformation portion 210 are formed in the sidewall of the first tube 220; the far ends of the three traction wires are respectively fixedly connected with the near end of the deformation part 210, the near ends of the three traction wires respectively penetrate through the traction wire cavity 221 to the near end of the first tube body 220, and the deformation part 210 can be driven to axially move along the first tube body 220 by operating the traction wires from the near end of the first tube body 220, so that the expansion state of the deformation part 210 can be adjusted.

In the present invention, the number of the traction wires may be multiple, and the number of the traction wire cavities 221 corresponds to the number of the traction wires one to one. The traction wire cavities are uniformly distributed in the pipe wall of the first pipe body 220 along the circumferential direction, and each traction wire is located in a separate traction wire cavity 221, so that the stability of forward and backward movement is ensured.

Fourth embodiment

Referring to fig. 7 to 9, the anchoring balloon catheter according to the fourth embodiment of the present invention is different from the first embodiment in that the anchoring device further includes a third tube 240, and the second tube 230, the deformation portion 210 and the third tube 240 are sequentially connected from the proximal end to the distal end to form a coaxial tubular structure; an internal thread (not shown) is arranged on the inner wall of the third tube 240, an external thread 222 is arranged on the outer wall of the first tube 220 near the distal end, and the external thread 222 is matched with the internal thread on the inner wall of the third tube 240; the distal end of the first tube 220 is inserted from the proximal end of the second tube 230, and sequentially penetrates through the second tube 230 and the deformation part 210 until being spirally connected with the third tube 240; moving the first tube in an axial direction relative to the second tube 230 can drive the third tube 240 to move relative to the second tube 230, so as to adjust the expansion of the deformation portion.

In another alternative embodiment of the present invention, the first tube and the third tube are fixedly connected by a snap-fit connection.

Fifth embodiment

Referring to fig. 10, a fifth embodiment of the anchoring balloon catheter of the present invention is different from the first embodiment in that in this embodiment, the shape-changing portion 210 is located at the proximal end of the first balloon 110. Specifically, the outer diameter of the catheter 100 is smaller than the inner diameter of the first tube, and the distal end of the catheter 100 penetrates the proximal port of the first tube 220 until the first balloon 110 passes out of the distal port of the first tube 220.

Sixth embodiment

This embodiment differs from the third embodiment only in that the outer diameter of the catheter is smaller than the inner diameter of the first tube, and the distal end of the catheter passes through the proximal port of the first tube until the first balloon passes through the distal port of the first tube, so that the deformed portion is located at the proximal end of the first balloon.

Seventh embodiment

This embodiment differs from the fourth embodiment only in that the outer diameter of the catheter is smaller than the inner diameter of the first tube, and the distal end of the catheter penetrates through the proximal port of the first tube until the first balloon passes through the distal port of the first tube, so that the deformed portion is located at the proximal end of the first balloon.

Eighth embodiment

The anchoring balloon catheter of the present embodiment is different from the fourth embodiment in that the anchoring balloon catheter does not include a first tube, the outer diameter of the catheter is smaller than the inner diameter of the second tube, an outer thread matched with an inner thread of the third tube is provided on the tube wall of the proximal end of the first balloon, the distal end of the catheter penetrates through the proximal end port of the first tube until the first balloon penetrates out of the distal end port of the first tube, the outer thread on the outer wall of the catheter is screwed with the inner thread of the second tube, and the third tube can be driven to move relative to the second tube by moving the catheter relative to the second catheter, so that the expansion form of the deformation portion can be adjusted.

Ninth embodiment

In this embodiment, as shown in fig. 11, the shape-changing portion is a second balloon 500 disposed on the outer wall of the catheter 100, and the second balloon 500 is located at the distal end of the first balloon. In the present invention, the second balloon 500 may be a compliant or non-compliant balloon. In this embodiment, the second balloon 500 is a compliant balloon, and a liquid filling cavity communicated with the inner cavity of the second balloon is disposed on the tube wall of the catheter 100, so that when the catheter is used, a contrast agent can be injected into the inner cavity of the second balloon 500 through the liquid filling cavity, and the expansion degree and anchoring condition of the second balloon 500 can be observed under the contrast.

The second balloon 500 may be disposed proximal or distal to the first balloon 110 to accommodate different vascular conditions. In this embodiment, the second balloon 500 is disposed at the distal end of the first balloon 110.

The first balloon 110 and the second balloon 500 may be inflated by the same inflation channel, or inflated by different inflation channels.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. An anchoring balloon catheter, comprising: the anchoring device is arranged on the outer wall of the catheter; the anchoring device includes a shape-changing portion disposed coaxially with the catheter, and is collapsible into a tubular configuration coaxial with the catheter or expandable into an expanded configuration expanding radially outward.

2. A balloon catheter according to claim 1, wherein the shape-changing portion is a tubular mesh structure woven from memory metal wires and having a distal end and a proximal end, the radial dimension of which is gradually reduced from the middle to both ends; the anchoring device also comprises a first tube body, wherein the far end of the deformation part is fixed on the outer wall of the first tube body, and the near end of the deformation part is movably sleeved on the outer wall of the first tube body; the catheter and the anchoring device are sleeved with each other, and the first balloon can be expanded outwards along the radial direction; actuating the proximal end of the shape-changing portion to move axially along the first tubular body causes the shape-changing portion to contract into a tubular configuration or expand into an expanded configuration that expands radially outward.

3. The balloon catheter of claim 2, wherein the anchoring device further comprises a second tube, the first tube passing in from a proximal end of the second tube, out from a distal end, to the deformed portion and out of the second tube; the proximal end of the deformable portion is connected to the second tubular body and is movable axially relative to the first tubular body to cause the deformable portion to contract into a tubular configuration or expand into an expanded configuration that expands radially outwardly.

4. The anchoring balloon catheter of claim 3 wherein the anchoring device further comprises a locking mechanism comprising a locking head and a locking cap, the locking head being disposed on an outer wall of the first tube body near the proximal end; the locking cap is arranged at the near end of the second tube body; the locking head and the locking cap can be fixedly connected, so that the first pipe body and the second pipe body are relatively fixed.

5. The anchoring balloon catheter of claim 4, wherein the locking head has an outer thread on an outer wall thereof, the locking cap has an inner cavity, and an inner thread on an inner wall thereof, the inner thread and the outer thread cooperating with each other.

6. The anchoring balloon catheter of claim 4, further comprising a clip, wherein the clip is cylindrical and elastic, and has a notch on its side wall extending from the inner cavity to the outside and extending axially to both ends, the width of the notch is smaller than the outer diameter of the first tube, and the clip is used for clipping the first tube between the locking cap and the locking head into the inner cavity from the notch.

7. The anchoring balloon catheter of claim 2, wherein the anchoring device further comprises a second tube and a third tube, the first tube having a first connection near a distal location; the second tube body, the deformation part and the third tube body are sequentially connected from the near end to the far end to form a coaxial tubular structure; the third pipe body is provided with a second connecting part which can be fixedly connected with the first connecting part; the first pipe body penetrates through the near end of the second pipe body, sequentially penetrates through the second pipe body and the deformation part, and is connected with the third pipe body through the fixed connection between the first connecting part and the second connecting part, so that the far end of the deformation part is fixed on the outer wall of the first pipe body; the first tube body is axially moved relative to the second tube body to drive the third tube body to move relative to the second tube body, and then the deformed portion is driven to contract into a tubular structure or expand into an expanded structure which expands radially and outwardly.

8. The anchoring balloon catheter of claim 7, wherein the first connection is an external thread disposed on an outer wall of the first tube; the second connecting portion are internal threads arranged on the inner wall of the third pipe body.

9. The anchoring balloon catheter of claim 2, wherein the anchoring device further comprises at least one pull wire, one end of which is fixedly connected to the proximal end of the shape-changing portion; the other end extends to the proximal end of the first tube, and the deformable portion is adapted to be collapsed into a tubular configuration or expanded into an expanded configuration extending radially outwardly by operation of a pull wire.

10. The anchoring balloon catheter of claim 2, wherein the anchoring device radial dimension is less than the catheter inner diameter dimension, the anchoring device passing in from the catheter proximal end, out from the distal end, to the shape-changing portion out of the catheter; or the like, or, alternatively,

the radial size of the catheter is smaller than the inner diameter size of the first tube body, and the catheter penetrates from the near end of the first tube body, penetrates out from the far end of the first tube body, penetrates out of the first balloon and is arranged outside the first tube body.

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