CN112971887A

CN112971887A - Anchoring device

Info

Publication number: CN112971887A
Application number: CN202110205895.2A
Authority: CN
Inventors: 屠攀; 罗鹏; 秦鑫
Original assignee: Shanghai Huihe Healthcare Technology Co Ltd
Current assignee: Shanghai Huihe Healthcare Technology Co Ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-06-18

Abstract

The application provides an anchoring instrument, mainly includes sleeve subassembly that has the directional passageway and has the anchor subassembly of anchoring collude, wherein, the anchor subassembly can move axially relative to the sleeve subassembly for the anchoring collude is via directional passageway and stretch out and produce the bending deformation in order to switch from the non-anchoring state to the anchoring state in the sleeve subassembly. Therefore, the directional anchoring can be realized by the method and the device, and the technical effect of accurate anchoring is realized.

Description

Anchoring device

Technical Field

The embodiment of the application relates to the technical field of medical instruments, in particular to an anchoring instrument.

Background

In interventional procedures, it is often necessary to anchor target tissue with the aid of anchoring structures in order to achieve a specific target action.

In other particular cases, in order to increase the effectiveness or reliability of the anchoring, there are specific orientation requirements for the anchoring action, which require the presence of corresponding guiding structures on the anchoring structure, which can be operated proximally.

In view of the above, there is a need for an anchoring instrument that can achieve directional anchoring.

Disclosure of Invention

In view of the above, the present application provides an anchoring device to overcome the above problems or at least partially solve the above problems.

An embodiment of the present application provides an anchoring instrument, which includes: a cannula assembly having at least one orienting channel; the anchoring component is movably arranged in the sleeve component in a penetrating way and is provided with at least one anchoring hook; wherein the anchoring hook is in a non-anchoring state when located in the sleeve assembly, the anchoring assembly being axially movable relative to the sleeve assembly such that the anchoring hook protrudes from the sleeve assembly via the orientation channel and is oriented to bend to change from the non-anchoring state to an anchoring state.

Optionally, the cannula assembly comprises a guide tube; and a guide coupleable to the guide tube to define the at least one directional passage inside the guide tube.

Optionally, the cannula assembly further comprises a cannula and an auxiliary tube; the guide pipe can be connected with the auxiliary pipe to define a sleeving groove communicated with the directional channel, and the sleeve can be sleeved in the sleeving groove.

Optionally, the auxiliary tube further comprises a guide structure adjacent to the sleeving groove for guiding the sleeve into the sleeving groove; the guide tube and the auxiliary tube are detachably connected with each other in a screw connection mode.

Optionally, the cannula further comprises at least one petal extending in the axial direction of the cannula; the abutting structure is arranged on the sleeve and is positioned at the root part of the valve body; when the sleeve is sleeved in the sleeving groove, the valve body can enter the directional channel through the sleeving groove until the abutting structure of the sleeve abuts against the guide piece.

Optionally, the anchor assembly comprises an actuating rod; an anchor having the at least one anchoring hook and a stop structure at a root of the anchoring hook; and an anchor seat which is respectively connected with the actuating rod and the anchor; the actuating rod and the anchoring element which are connected by the anchoring seat can be arranged in the sleeve in a penetrating mode, the actuating rod can be stressed to move axially relative to the sleeve, the anchoring hook is driven to move axially relative to the sleeve to penetrate through the orientation channel and extend out of the sleeve assembly until the anchoring element enters the guide tube, and the stopping structure abuts against the guide element.

Optionally, the anchoring hooks are circumferentially aligned with the petals when the anchor is threaded into the cannula.

Optionally, the actuating rod and the anchoring element are located on opposite sides of the anchoring seat, the anchoring seat and the actuating rod are screwed with each other, and the anchoring element and the actuating rod are sleeved with each other.

Optionally, after the anchoring hook is switched to the anchoring state, the anchoring seat and the actuating rod, the guide tube and the auxiliary tube may be detached, and the sleeve may be drawn out from the sleeve groove to detach the actuating rod, the auxiliary tube and the sleeve.

Optionally, the directional channel and the anchoring hook are each two.

Optionally, the cannula assembly comprises a cannula having two petals extending in an axial direction of the cannula and two abutment slots between roots of the two petals; an auxiliary tube; a guide tube connectable with the auxiliary tube to define a sleeving groove; and a guide member coupled to the guide tube to define two of the orientation passages communicating with the sheathing groove inside the guide tube; the two valve bodies can pass through the sleeving grooves and enter the two directional channels respectively until the two abutting grooves abut against the guide piece respectively, so that the sleeve is sleeved in the sleeving grooves and rides on the guide piece.

Optionally, the two petals are symmetrically arranged on two opposite sides of the cannula, and each petal comprises a rounded corner structure; the guide piece radially penetrates through the guide tube so as to form two symmetrically distributed directional channels inside the guide tube; the two petal bodies can enter the two directional channels respectively through the fillet structure.

Optionally, the anchor assembly comprises an actuating rod; an anchor having two anchoring hooks and two stopper grooves between roots of the two anchoring hooks; and an anchor seat which is respectively connected with the actuating rod and the anchor; the actuating rod and the anchoring piece which are connected by the anchoring seat can be arranged in the sleeve in a penetrating mode, the actuating rod can be stressed to move axially relative to the sleeve, and the two anchoring hooks are driven to move axially relative to the sleeve to penetrate through the two orientation channels and extend out of the sleeve assembly until the anchoring piece enters the guide tube, and the two stopping grooves are respectively abutted to the guide piece so that the anchoring piece can be arranged on the guide piece in a riding mode.

Alternatively, the anchoring hook may be made by performing a cutting process on a tube or bar.

Optionally, the anchoring hook is made of a memory alloy material, so that the anchoring hook can be bent and deformed in a predetermined direction after extending out of the sleeve assembly to switch to the anchoring state.

It can be seen from the above technical scheme that the anchoring instrument of the embodiment of the application is provided with the directional channel so that the anchoring hook extends out of the sleeve assembly through the directional channel and performs anchoring operation, and therefore, the application can realize accurate directional anchoring so as to improve the success rate of the operation.

In addition, the anchoring device of the application has the advantages of simple structural design and small number of parts.

Furthermore, the anchoring device of the present application can remove some components of the anchoring device after the anchoring operation is completed by virtue of the detachable design of the components, so as to greatly reduce the volume of the anchoring device left in the patient.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 and 2 are schematic views showing the overall structure of the anchoring instrument according to the embodiment of the present application, wherein fig. 1 is a schematic view showing the anchoring instrument in an anchoring state, and fig. 2 is a schematic view showing the anchoring instrument in a non-anchoring state.

FIG. 3 is a schematic structural view of a guide tube according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a guide member according to an embodiment of the present application;

FIGS. 5A and 5B are schematic views of the structure of a ferrule according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of an auxiliary tube according to an embodiment of the present application;

FIG. 7 is a schematic view of an actuator rod according to an embodiment of the present invention;

FIGS. 8A and 8B are schematic structural views of an anchor of an embodiment of the present application in an un-anchored state and an anchored state;

FIG. 9 is a schematic structural view of an anchor mount according to an embodiment of the present application;

FIGS. 10A and 10B are schematic views of anchors according to various embodiments of the present application;

FIGS. 11 and 12 are schematic views of different states of the anchor assembly of the present application incorporated into a cannula;

FIG. 13 is a schematic view showing a state in which a sleeve incorporating an anchor assembly is fitted into a fitting groove formed by an auxiliary tube and a guide tube;

fig. 14 shows a state diagram of the anchoring instrument after completion of the anchoring operation.

Element number

1: an anchoring instrument;

10: a bushing assembly;

102: a directional channel;

104: a sleeve;

1042: a flap body;

10422: a fillet structure;

1044: an abutting structure;

10442: a butt joint groove;

106: an auxiliary tube;

1062: introducing a structure;

1064: a thread structure;

108: a guide tube;

1082: perforating holes;

1084: a thread structure;

110: sleeving a groove;

112: a guide member;

1122: a guide post;

20: an anchor assembly;

202: an anchoring hook;

204: an actuating rod;

2042: a screw connection part;

206: an anchor;

2062: a socket joint part;

208: a stop structure;

2082: a stopper groove;

210: an anchor seat;

2102: a screw connection part;

2104: a socket joint part;

2106: abutting the wall.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application shall fall within the scope of the protection of the embodiments in the present application.

In view of the foregoing, the present application provides an anchoring device that can effectively improve the above technical problems.

The following further describes specific implementations of the embodiments of the present application with reference to the drawings of the embodiments of the present application.

The anchoring device 1 of the present application may be applied to a heart valve intervention repair operation, but is not limited thereto, and may be applied to any other surgical operation requiring tissue-oriented anchoring.

Fig. 1 and 2 are schematic views showing the overall structure of an anchoring instrument 1 according to an embodiment of the present application, in which fig. 1 is a schematic view showing the anchoring instrument 1 according to the embodiment of the present application in an unanchored state, and fig. 2 is a schematic view showing the anchoring instrument 1 according to the embodiment of the present application in an anchored state.

As shown, the anchoring instrument 1 of the present embodiment of the application mainly comprises a sleeve assembly 10 and an anchoring assembly 20.

Cannula assembly 10 has at least one orienting passage 102 and anchor assembly 20 is movably disposed through cannula assembly 10 and includes at least one anchoring hook 202.

In the present embodiment, the number of the directional channels 102 corresponds to the number of the anchoring hooks 202.

Preferably, there are two each of the directional channel 102 and the anchoring hooks 202.

Anchor assembly 20 is axially movable relative to sleeve assembly 10 such that anchoring hooks 202 extend from sleeve assembly 10 via orienting passages 102 and are oriented to flex to switch from an un-anchored state (i.e., the state shown in fig. 1) to an anchored state (i.e., the state shown in fig. 2).

In the present embodiment, when the anchoring hook 202 is inserted into the cannula assembly 10, the anchoring hook 202 is in the non-anchoring state, and when the anchoring hook 202 extends out of the cannula assembly 10, the anchoring hook can be bent to change from the non-anchoring state to the anchoring state.

In the present embodiment, two anchoring hooks 202 inserted into the sleeve assembly 10 are circumferentially aligned with two orientation passages 102 respectively, so that each anchoring hook 202 extends out of the sleeve assembly 10 through the corresponding orientation passage 102 and is oriented to bend. Therefore, the anchoring device 1 of the embodiment of the application can achieve the technical effect of anchoring the target tissue by directional hooking.

Optionally, the cannula assembly 10 includes a cannula 104, a secondary tube 106, a guide tube 108, and a guide 112.

The guide 112 may be coupled to the guide tube 108 to define the directional passage 102 within the interior of the guide tube 108.

As shown in fig. 3 and 4, in the present embodiment, the guiding element 112 is a guiding column 1122 radially penetrating the guiding tube 108, so as to form two symmetrically distributed guiding channels 102 inside the guiding tube 108.

For example, two through holes 1082 may be formed on opposite side walls of the guide tube 108 in a radial direction of the guide tube 108, so that the guide posts 1122 are inserted into the two through holes 1082, thereby dividing the inner passage of the guide tube 108 into two directional passages 102 (refer to fig. 13) which are symmetrically distributed.

It should be noted that the guide member 112 is not limited to the guide column 1122, and may be different according to the number of the directional channels 102 required to be formed in the guide tube 108, which is not limited in the present application.

The guide tube 108 can be connected to the auxiliary tube 106 to define a sleeve groove 110 (see fig. 13) communicating with the directional passage 102, so that the sleeve 104 can be arranged in the sleeve groove 110 (see fig. 1 and 2) formed by the guide tube 108 and the auxiliary tube 106.

Alternatively, the guide tube 108 may be provided with a screw thread structure 1084, and the auxiliary tube 106 may be provided with a screw thread structure 1064, wherein the

screw thread structures

1084 and 1064 are respectively configured as an internal screw thread and an external screw thread, so as to provide the guide tube 108 and the auxiliary tube 106 to be detachably connected with each other by a screw-coupling manner to form the sleeve groove 110. It should be noted that the connection manner between the guide tube 108 and the auxiliary tube 106 is not limited to the above-mentioned screw connection manner, and other manners (such as clamping connection, etc.) may be adopted to connect with each other.

Optionally, the auxiliary tube 106 may include a guide structure 1062 (see fig. 6) adjacent the jacket groove 110 for guiding the sleeve 104 into the jacket groove 110.

In the embodiment, the guiding structure 1062 is an inclined surface formed on the auxiliary tube 106, so that the entrance of the sleeving groove 110 is in a bell mouth shape, thereby facilitating the sleeve 104 to enter the sleeving groove 110.

Optionally, the sleeve 104 may include at least one petal 1042 extending in an axial direction of the sleeve 104 and an abutment structure 1044 disposed on the sleeve 104 at a root of the petal 1042.

In this embodiment, the flap 1042 of the sleeve 104 can enter the guiding channel 102 (refer to fig. 1 and 2) through the sleeve groove 110 until the abutting structure 1044 of the sleeve 104 abuts the guiding element 112, so that the sleeve 104 is sleeved in the sleeve groove 110.

Referring to fig. 5A and 5B, in the present embodiment, the sleeve 104 has two petals 1042 extending along the axial direction thereof, wherein the two petals 1042 may be symmetrically distributed; furthermore, the abutment structure 1044 may include two abutment slots 10442 (refer to fig. 5B) located between the roots of the two petals 1042. Therefore, according to the embodiment of the present application, the sleeve 104 is sleeved in the sleeving groove 110 and rides on the guide post 1122 through the two flap bodies 1042 and the two abutting grooves 10442 which are symmetrically distributed, so that the structural stability between the sleeve 104 and the guide tube 108 is improved.

Optionally, the top end of each flap 1042 further includes a rounded structure 10422 to facilitate each flap 1042 to enter the respective orientation channel 102 via the rounded structure 10422, i.e., to facilitate the guiding element 112 to smoothly move from the top end of the flap 1042 to the abutting groove 10442 at the root of the flap 1042 via the rounded structure 10422.

Optionally, the anchor assembly 20 includes an actuating rod 204, an anchor 206, and an anchor mount 210.

The anchor 206 has at least one anchoring hook 202 and a stop structure 208 disposed on the anchor 206 at a root of the anchoring hook 202.

Alternatively, the anchor 206 may include two anchoring hooks 202 symmetrically distributed.

Preferably, each anchoring hook 202 has a pointed tip to facilitate anchoring of the target tissue.

Alternatively, the anchor 206 may be made by performing a cutting process for a tube (refer to fig. 8A, 8B, 10A) or a bar (refer to fig. 10B).

Alternatively, the anchoring hooks 202 (or the anchoring elements 206) are made of a memory alloy material (e.g., nitinol) so that each anchoring hook 202 can be bent and deformed in a predetermined direction to switch from the non-anchoring state to the anchoring state after being extended from the cannula assembly 10.

Alternatively, the anchoring hooks 202 may be formed using a heat-setting process, such as 530 ℃ processing temperature and 5 minutes processing duration. However, the parameters of the processing temperature and the processing time may be arbitrarily adjusted according to specific manufacturing requirements, and the present application is not limited thereto.

The anchor mount 210 is used to connect the actuating rod 204 and the anchor 206, respectively.

In the present embodiment, the actuating rod 204 and the anchoring element 206 are located at two opposite sides of the anchor seat 210, wherein the anchor seat 210 and the actuating rod 204 are connected to each other by a screw connection, and the anchoring element 206 and the actuating rod 204 are connected to each other by a sleeve connection.

Alternatively, a screw joint 2102 (refer to fig. 9) and a screw joint 2042 (refer to fig. 7) may be provided on the anchor base 210 and the actuating rod 204, respectively, for screwing the anchor base 210 and the actuating rod 204 to each other.

Alternatively, a socket 2104 (see fig. 9) and a socket 2062 (see fig. 8A and 8B) may be provided on the anchor base 210 and the anchor 206, respectively, for the anchor base 210 and the anchor 206 to be sleeved with each other.

Optionally, an abutment wall 2106 adjacent to socket 2104 may also be provided on anchor seat 210 for defining a socket depth between anchor seat 210 and anchor 206.

It should be noted that the actuating rod 204, the anchoring element 206 and the anchoring base 210 can be detachably connected to each other by other methods, which is not limited in the present application.

In this embodiment, the actuating rod 204 and the anchor 206 connected by the anchor seat 210 may be inserted into the sleeve 104, and the actuating rod 204 may be forced to move axially relative to the sleeve 104 to drive the anchoring hook 202 to move axially relative to the sleeve 106, and to pass through the orientation passage 102 and protrude from the sleeve assembly 10 (i.e. the orientation passage 102 of the guide tube 108) until the stop structure 208 of the anchor assembly 20 abuts against the guide 112 of the sleeve assembly 10.

In the present embodiment, the number of the anchoring hooks 202 corresponds to the number of the petals 1042, wherein when the anchor 206 is inserted into the sleeve 104, each anchoring hook 202 is circumferentially aligned with each petal 1042, so that each anchoring hook 202 can be circumferentially aligned with each orientation channel 102, thereby facilitating each anchoring hook 202 to extend out of the sleeve assembly 10 through each orientation channel 102 and perform an orientation anchoring operation.

In one embodiment, the anchor 206 has two symmetrically distributed anchoring hooks 202 and two stopping grooves 2082 located between the roots of the two anchoring hooks 202.

When the moving rod 204 is forced to move axially relative to the cannula 104, the two anchoring hooks 202 can be driven to move axially relative to the cannula 104 and pass through the two orienting channels 102 respectively to extend out from the cannula assembly 10 until the anchor 206 enters the guiding tube 108 and the two stopping grooves 2082 abut against the guiding element 112 respectively, so that the anchor 206 rides on the guiding element 112 (refer to the state shown in fig. 1 and 14).

In the present embodiment, since the connection between the guide tube 108 and the auxiliary tube 106, the actuating rod 204 and the anchor seat 210 are detachably connected, when the anchoring hook 202 is switched to the anchoring state (i.e. the anchoring hook 202 is after the directional anchoring operation for the target tissue is completed), the connection between the anchor seat 210 and the actuating rod 204 is firstly released, then the connection between the guide tube 108 and the auxiliary tube 106 is released, and finally the sleeve 104 is pulled out from the sleeve groove 110 to sequentially remove the actuating rod 204, the auxiliary tube 106 and the sleeve 104, so that only the guide tube 108, the guide member 112, the anchor 206 and the anchor seat 210 are remained in the patient (refer to the state shown in fig. 14), thereby reducing the volume of the anchoring device remaining in the patient.

Furthermore, the method of using the anchoring device of the embodiment of the present application mainly includes:

step 1, the actuating rod 204 and the anchor 206 are respectively connected by the anchor base 210 to form the anchor assembly 10, and the auxiliary tube 106 and the guide tube 108 are connected to form the sleeve groove 110.

Step 2, the anchor assembly 10 is inserted into the casing 104 (refer to fig. 11) until the anchoring hooks 202 partially enter the casing 104, and each anchoring hook 202 is circumferentially aligned with each lobe 1042 of the casing 104 (refer to fig. 11 to 12).

Step 3, the sleeve 104 is sleeved in the sleeving groove 110 formed by the auxiliary tube 106 and the guide tube 108 (refer to fig. 13), and the flap body 1042 of the sleeve 104 enters the orientation channel 102 through the sleeving groove 110 until the abutting structure 1044 of the sleeve 104 abuts against the guide 112 (refer to fig. 2).

Step 4, applying a force to the actuating rod 204 to axially move it relative to the sleeve 104, and driving the anchor 206 to synchronously axially move relative to the sleeve 104 via the anchor seat 210, so that each of the anchor hooks 202 can extend out of the guide tube 108 of the sleeve assembly 10 via each of the orientation channels 102 in the guide tube 108 and be oriented to bend and deform, so as to switch from the non-anchoring state to the anchoring state (refer to fig. 1).

Step 5, the connection between the anchor seat 210 and the actuating rod 204 is released, the connection between the guide tube 108 and the auxiliary tube 106 is released, and finally the sleeve 104 is pulled out from the sleeve groove 110, so as to sequentially remove the actuating rod 204, the auxiliary tube 106 and the sleeve 104, and only the guide tube 108, the guide member 112, the anchoring element 206 (including the anchoring hook 202) and the anchor seat 210 are remained in the patient (refer to fig. 14).

In summary, the anchoring device provided by the embodiment of the application can control the anchoring hook to be oriented out of the hook and to be bent and deformed by virtue of the structural design of the oriented channel, so that the accurate oriented anchoring operation is realized.

Moreover, the anchoring instrument that this application embodiment provided has the advantage that structural design is simple and spare part is few.

In addition, the anchoring device provided by the embodiment of the application can remove the actuating rod, the auxiliary tube and the sleeve part of the anchoring device by sequentially disconnecting the connecting relation between the anchoring seat and the actuating rod and the connecting relation between the guide tube and the auxiliary tube after the anchoring hook completes the directional anchoring operation, and only the guide tube, the guide piece, the anchoring seat and the anchoring device are reserved in the patient body, so that the volume of the anchoring device reserved in the patient body can be reduced, and the use feeling of the patient is improved.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. An anchoring instrument, comprising:

a cannula assembly having at least one orienting channel; and

an anchor assembly movably disposed through the cannula assembly and having at least one anchoring hook;

wherein the anchoring hook is in a non-anchoring state when located in the sleeve assembly, the anchoring assembly being axially movable relative to the sleeve assembly such that the anchoring hook protrudes from the sleeve assembly via the orientation channel and is oriented to bend to change from the non-anchoring state to an anchoring state.

2. The anchoring instrument of claim 1, wherein the sleeve assembly comprises:

a guide tube; and

a guide may be coupled to the guide tube to define the at least one directional passage within the interior of the guide tube.

3. The anchoring instrument of claim 2, wherein the sleeve assembly further comprises:

a sleeve; and

an auxiliary tube;

the guide pipe can be connected with the auxiliary pipe to define a sleeving groove communicated with the directional channel, and the sleeve can be sleeved in the sleeving groove.

4. The anchoring instrument of claim 3,

the auxiliary tube further comprises a guiding structure adjacent to the sleeving groove and used for guiding the sleeve into the sleeving groove;

the guide tube and the auxiliary tube are detachably connected with each other in a screw connection mode.

5. The anchoring instrument of claim 3, wherein the sleeve further comprises:

at least one petal extending in an axial direction of the cannula; and

the abutting structure is arranged on the sleeve and is positioned at the root part of the valve body;

when the sleeve is sleeved in the sleeving groove, the valve body can enter the directional channel through the sleeving groove until the abutting structure of the sleeve abuts against the guide piece.

6. The anchoring instrument of claim 5, wherein the anchoring assembly comprises:

an actuating rod;

an anchor having the at least one anchoring hook and a stop structure at a root of the anchoring hook; and

the anchoring seat is respectively connected with the actuating rod and the anchoring piece;

the actuating rod and the anchoring element which are connected by the anchoring seat can be arranged in the sleeve in a penetrating mode, the actuating rod can be stressed to move axially relative to the sleeve, the anchoring hook is driven to move axially relative to the sleeve to penetrate through the orientation channel and extend out of the sleeve assembly until the anchoring element enters the guide tube, and the stopping structure abuts against the guide element.

7. The anchoring device of claim 6, wherein the anchoring barbs are circumferentially aligned with the petals when the anchor is threaded into the cannula.

8. An anchor device as claimed in claim 6, wherein the actuating rod and the anchor element are located on opposite sides of an anchor mount, the anchor mount being threadably engaged with the actuating rod and the anchor element being telescoped with the actuating rod.

9. The anchoring device of claim 6, wherein when the anchoring hook is switched to the anchoring state, the anchoring base and the actuating rod, the guide tube and the auxiliary tube are detached, and the sleeve is withdrawn from the groove to detach the actuating rod, the auxiliary tube and the sleeve.

10. The anchoring instrument of claim 1 wherein there are two each of the directional channel and the anchoring barb.

11. The anchoring instrument of claim 10, wherein the sleeve assembly comprises:

a sleeve having two lobes extending in an axial direction of the sleeve and two abutment slots between roots of the two lobes;

an auxiliary tube;

a guide tube connectable with the auxiliary tube to define a sleeving groove; and

a guide member coupled to the guide tube to define two of the orientation passages communicating with the sheathing groove in an interior of the guide tube;

the two valve bodies can pass through the sleeving grooves and enter the two directional channels respectively until the two abutting grooves abut against the guide piece respectively, so that the sleeve is sleeved in the sleeving grooves and rides on the guide piece.

12. The anchoring instrument of claim 11,

the two petal bodies are symmetrically arranged on two opposite sides of the sleeve, and each petal body comprises a fillet structure;

the guide piece radially penetrates through the guide tube so as to form two symmetrically distributed directional channels inside the guide tube;

the two petal bodies can enter the two directional channels respectively through the fillet structure.

13. The anchoring instrument of claim 11, wherein the anchoring assembly comprises:

an actuating rod;

an anchor having two anchoring hooks and two stopper grooves between roots of the two anchoring hooks; and

the actuating rod and the anchoring piece which are connected by the anchoring seat can be arranged in the sleeve in a penetrating mode, the actuating rod can be stressed to move axially relative to the sleeve, and the two anchoring hooks are driven to move axially relative to the sleeve to penetrate through the two orientation channels and extend out of the sleeve assembly until the anchoring piece enters the guide tube, and the two stopping grooves are respectively abutted to the guide piece so that the anchoring piece can be arranged on the guide piece in a riding mode.

14. The anchoring instrument of claim 1 wherein the anchoring hook is made by performing a cutting process on a tube or rod.

15. The anchoring device of claim 1, wherein the anchoring hook is made of a memory alloy material, such that the anchoring hook can be bent and deformed in a predetermined direction to switch to the anchoring state after protruding from the sleeve assembly.