Anchoring devices

Abstract

The present application provides an anchoring device, primarily comprising an anchor, a catheter, and a connecting assembly. The connecting assembly comprises a first connecting structure provided on the anchor and a second connecting structure provided on the catheter. The second connecting structure is detachably coupled to the first connecting structure, allowing the catheter and anchor to be in either a connected or disconnected state. This device has the advantages of a simple structural design, and a disconnection operation that does not affect the anchoring force into tissue. Furthermore, the present application allows for repeated disconnection and anchoring operations between the catheter and anchor, thereby enhancing the anchoring effect.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of medical devices, and in particular to an anchoring device. Background Art

[0002] In various surgical operations, such as interventional heart valve repair surgery, it is often necessary to perform remote operations through a catheter so that the self-tapping screw can penetrate into human tissue for anchoring. After the anchoring operation is completed, the catheter and the self-tapping screw must be separated.

[0003] Existing technology provides a method for threaded connection between a catheter and a self-tapping screw. After the self-tapping screw is inserted into the tissue, the threads of the catheter and the self-tapping screw can be disengaged by rotating them in the opposite direction. However, this technology poses a problem. Because the disengagement threads and the spiral direction of the self-tapping screw entering the tissue are opposite, the self-tapping screw has a tendency to be rotated out of the tissue during the catheter disengagement operation, significantly reducing the anchoring force. In some cases, the self-tapping screw may be completely unscrewed from the tissue during the disengagement process.

[0004] Existing technology also offers a connection method that utilizes a mating protrusion and groove, which can be separated by cutting a pull wire in the middle. However, a potential problem with this technology is that to reduce the risk of accidental separation during transportation, the pull wire must be kept taut, resulting in tension in the system. Furthermore, the presence of the pull wire consumes space within the catheter.

[0005] In view of this, there is an urgent need for an anchoring device that is easy to dissociate and does not affect the anchoring force. Summary of the Invention

[0006] In view of the above problems, the present application provides an anchoring device to overcome the above problems or at least partially solve the above problems.

[0007] An embodiment of the present application provides an anchoring device, which includes an anchor; a catheter; and a connecting assembly, which includes a first connecting structure provided on the anchor and a second connecting structure provided on the catheter; wherein the second connecting structure can be detachably coupled to the first connecting structure so that the catheter and the anchor are in a connected state or a dissociated state.

[0008] Optionally, the anchor comprises a self-tapping screw.

[0009] Optionally, when the catheter and the anchor are in the dissociated state, the catheter is rotated relative to the anchor along its circumference toward a first direction so that the second connecting structure moves from a dissociated position to a locked position relative to the first connecting structure, thereby switching the catheter and the anchor from the dissociated state to the connected state; when the catheter and the anchor are in the connected state, the catheter is driven to rotate synchronously toward the anchor along its circumference toward the first direction so as to control the anchor to perform an anchoring operation on a designated part; when the catheter and the anchor are in the connected state, the catheter is rotated relative to the anchor along its circumference toward a second direction opposite to the first direction so that the second connecting structure moves from the locked position to the dissociated position relative to the first connecting structure, thereby switching the catheter and the anchor from the connected state to the dissociated state.

[0010] Optionally, the anchor member further includes a non-return structure for preventing the anchor member from rotating toward the second direction.

[0011] Optionally, the anti-return structure includes at least one barb structure provided on the self-tapping screw.

[0012] Optionally, the first connecting structure and the second connecting structure have a first spiral direction, the anchor has a second spiral direction, and the first spiral direction is opposite to the second spiral direction.

[0013] Optionally, the connection assembly further comprises a core shaft; wherein the first connection structure is fixedly sleeved on the core shaft, so that the first connection structure and the core shaft together form a recessed portion defining a limited position area, a passage area, and a locking area; the second connection structure comprises a sleeve portion and a locking portion extending from the sleeve portion; wherein the sleeve portion is detachably sleeved on the core shaft so that the sleeve portion is at least partially located in the limited position area, and the sleeve portion is provided with a stop by the side wall of the limited position area, thereby limiting the maximum degree of sleeve engagement between the sleeve portion and the core shaft. The locking portion can enter or leave the locking area via the passage area, and when the locking portion is located in the locking area, the locking portion can move relative to the locking area between a locked position and a disengaged position.

[0014] Optionally, the catheter can be moved along its axial direction toward the anchor member so that the sleeve portion can be detachably sleeved on the core shaft, and the side wall of the limiting area can be used to provide a stop for the sleeve portion to limit the maximum sleeve degree between the sleeve portion and the core shaft; the catheter can be rotated along its circumferential direction relative to the anchor member so that the engaging portion can move between a locked position and a disengaged position relative to the engaging area.

[0015] Optionally, the locking portion includes a locking body and a protrusion extending from the locking body, and wherein the channel area has a first width, the limiting area has a second width, the locking body has a third width, the first width and the second width are substantially equal, and the first width and the second width are at least twice the third width; the first connecting structure has a first parallel side wall; the sleeve portion of the second connecting structure has a second parallel side wall, and the locking portion of the second connecting structure includes an inclined side wall with a first height; wherein, when the locking portion is located in the locking area, the spacing distance between the first parallel side wall and the second parallel side wall is not less than the first height.

[0016] Optionally, the engaging portion is in a 7-shape; the first connecting structure and the second connecting structure are formed by an integral cutting process using the same raw material.

[0017] It can be seen from the above technical solutions that the anchoring device of the embodiment of the present application has the advantage that the dissociation operation will not affect the anchoring force of the tissue.

[0018] Furthermore, by connecting the anchor and the catheter using a spiral buckle, the risk of misalignment can be effectively reduced.

[0019] In addition, the anchoring device of the present application has the advantages of simple structural design, small number of parts, and the dissociation process does not affect the anchoring force.

[0020] In addition, the anchoring instrument of the present application also repeatedly performs connection and dissociation operations to improve the anchoring effect of penetrating tissue during surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 and Figure 2 This is a schematic diagram of a structural embodiment of an anchoring device according to the first embodiment of the present application, wherein: Figure 1 is a schematic diagram of an embodiment in which the anchor and the catheter are in a connected state. Figure 2 is a schematic diagram of an embodiment in which the anchor and the catheter are in a dissociated state;

[0023] Figure 3 and Figure 4 This is a schematic structural diagram of a connection assembly shown in another embodiment of the present application;

[0024] Figures 5A to 5C for Figure 1 and Figure 2 A schematic diagram of an exploded structural embodiment of a connection assembly is shown;

[0025] Figures 6A to 6E for Figure 1 and Figure 2 Structural schematic diagrams of the connection components shown at different angles;

[0026] Figure 7 This is a schematic diagram of an application embodiment of the anchoring device of this application.

[0027] Component number

[0028] 1: Anchoring device;

[0029] 11: anchor;

[0030] 111: anti-return structure;

[0031] 12: catheter;

[0032] 13: Connect components;

[0033] 131: first connection structure;

[0034] 131A: first parallel sidewall;

[0035] 1311: concave portion;

[0036] 1311A: restricted area;

[0037] 1311B: channel area;

[0038] 1311C: engagement area;

[0039] 1312A: locked position;

[0040] 1312B: dissociation site;

[0041] 132: second connection structure;

[0042] 132A: second parallel side wall;

[0043] 1321: socket part;

[0044] 1322: locking portion;

[0045] 1322A: Beveled side wall

[0046] 13221: Snap body;

[0047] 13222: convex part;

[0048] 133: mandrel; DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field should fall within the scope of protection of the embodiments of the present application.

[0050] As described in the background technology section, various anchoring devices currently used in surgical operations (such as heart valve interventional repair surgery) have a tendency for the self-tapping screws that penetrate into the tissue to be unscrewed out of the tissue during the process of catheter dissociation, thereby reducing the anchoring force of the self-tapping screws. In view of this, the present application provides an anchoring device that can effectively improve the above-mentioned technical issues.

[0051] The specific implementation of the embodiment of the present application will be further explained below in conjunction with the drawings of the embodiment of the present application.

[0052] The anchoring device 1 of the present application can be applied to heart valve interventional repair surgery (refer to Figure 7 The present invention is not limited to the embodiment shown in the figure, but can also be applied to any other surgical procedures requiring tissue anchoring.

[0053] like Figure 1 and Figure 2 As shown, the anchoring device 1 of the present application mainly includes an anchor 11 , a catheter 12 , and a connecting assembly 13 .

[0054] In this embodiment, the anchor 11 is, for example, a self-tapping screw. The connecting assembly 13 includes a first connecting structure 131 provided on the anchor 11 and a second connecting structure 132 provided on the catheter 12 .

[0055] Specifically, the second connection structure 132 is detachably coupled to the first connection structure 131 so that the catheter 12 and the anchor 11 can be in a connected state or a disconnected state.

[0056] In this embodiment, when the catheter 12 and the anchor 11 are in a dissociated state (ie Figure 2 As shown in the state), by making the catheter 12 move along its circumference in a first direction (eg Figure 2 The second connecting structure 132 is rotated relative to the first connecting structure 131 in the F1 direction shown in FIG. 1 , so that the second connecting structure 132 moves from the dissociated position to the locked position relative to the first connecting structure 131, thereby switching the catheter 12 and the anchor 11 from the dissociated state to the connected state (i.e., Figure 1 status shown).

[0057] In addition, when the catheter 12 and the anchor 11 are in a connected state, the catheter 12 is driven along its circumference toward the anchor 11 in a synchronous manner in a first direction (eg Figure 2 The F1 direction shown in FIG. 1 is rotated to control the anchor 11 to target a specific part (eg Figure 7 The anchoring operation is performed using the human tissue shown in FIG.

[0058] Furthermore, when the catheter 12 and the anchor 11 are in the connection state, the catheter 12 is moved along its circumference in a second direction (eg Figure 2 The second connecting structure 132 is rotated relative to the anchor 11 in the F2 direction shown in the figure, so that the second connecting structure 132 moves from the locked position to the disengaged position relative to the first connecting structure 131, and the supply catheter 12 and the anchor 11 are switched from the connected state to the disengaged state.

[0059] In this embodiment, the first connection structure 131 and the second connection structure 132 have a first spiral direction, the anchor 11 has a second spiral direction, and the first spiral direction is opposite to the second spiral direction.

[0060] For example, Figure 1 and Figure 2 In the embodiment shown, the spiral direction of the first connecting structure 131 and the second connecting structure 132 tends to the left, while the spiral direction of the anchor 11 tends to the right. Due to this design mechanism, when performing the dissociation operation between the anchor 11 and the catheter 12, a spiral upward force must be applied to achieve dissociation between the two. Compared with the linear snap-on design, the present application can effectively reduce the risk of mis-dissociation.

[0061] In another embodiment, please refer to Figure 3 and Figure 4 The first connection structure 131 and the second connection structure 132 of the connection component 13 can also be designed as 3D snap-fit structures that are structurally compatible with each other. The specific snap-fit structure design is not limited to that shown in this figure and can be adjusted according to actual needs.

[0062] Please refer to Figures 5A to 5C In this embodiment, the connecting component 13 further includes a core shaft 133 , and the first connecting structure 131 can be fixedly sleeved on the outer periphery of the core shaft 133 .

[0063] like Figures 6A to 6E As shown, a recessed portion 1311 defining a limiting area 1311A, a channel area 1311B, and a locking area 1311C can be formed by a first connecting structure 131 sleeved on the outer periphery of the core shaft 133. In this embodiment, the channel area 1311B can be located between the limiting area 1311A and the locking area 1311C.

[0064] Furthermore, the second connecting structure 132 also includes a socket portion 1321 and a locking portion 1322 extending from the socket portion 1321, wherein the socket portion 1321 can be detachably socketed on the core shaft 133 so that the socket portion 1321 is at least partially located in the limiting area 1311A, and the side wall of the limiting area 1311A is used to provide a stop for the socket portion 1321, thereby limiting the maximum socketing degree between the socket portion 1321 and the core shaft 133.

[0065] Specifically, the catheter 12 can be moved along its axial direction toward the direction of approaching the anchor 11 (refer to Figure 2 The second connecting structure 132 is sleeved on the core shaft 133, and the side wall of the limiting area 1311A provides a stop for the sleeve portion 1321 to limit the maximum distance that the catheter 12 moves relative to the anchor 11 along the D1 direction. On the contrary, when the catheter 12 moves in the direction away from the anchor 11 along its axial direction (refer to Figure 2 When the second connecting structure 132 is moved in the direction D2 as shown in the figure, the second connecting structure 132 can be separated from the core shaft 133, thereby completing the dissociation operation between the catheter 12 and the anchor 11.

[0066] Furthermore, the engaging portion 1322 of the second connection structure 132 can enter or leave the engaging area 1311C through the passage area 1311B.

[0067] For example, reference Figure 6B When the catheter 12 moves along its axial direction toward the anchor member 11, the locking portion 1322 of the second connecting structure 132 can enter the locking area 1311C from the limiting area 1311A via the channel area 1311B. Conversely, when the catheter 12 moves along its axial direction toward the direction away from the anchor member 11, the locking portion 1322 of the second connecting structure 132 can enter the limiting area 1311A from the locking area 1311C via the channel area 1311B.

[0068] In this embodiment, when the locking portion 1322 is located in the locking area 1311C, the locking portion 1322 can move between the locking position 1312A and the disengagement position 1312B relative to the locking area 1311C to provide the second connection structure 132 and the first connection structure 131 with a fixed connection, or to provide the second connection structure 132 and the first connection structure 131 with separation from each other.

[0069] Specifically, the catheter 12 can be rotated relative to the anchor 11 along its circumferential direction so that the engaging portion 1322 can move between the locking position and the disengaging position relative to the engaging area 1311C.

[0070] For example, when the catheter 12 is directed in its axial direction relative to the anchor 11, Figure 2When the engagement portion 1322 is rotated in the F1 direction shown, it is possible to move the engagement portion 1322 from the disengaged position 1312B of the engagement area 1311C to the locked position 1312A. Conversely, when the catheter 12 is rotated in the axial direction relative to the anchor 11, Figure 2 When rotating in the F2 direction, the engaging portion 1322 can be moved from the locking position 1312A of the engaging area 1311C to the disengaging position 1312B.

[0071] In this embodiment, the engaging portion 1322 of the second connection structure 132 further includes a engaging body 13221 and a protrusion 13222 extending from the engaging body 13221 , so that the engaging portion 1322 is overall 7-shaped, but the present invention is not limited thereto. The engaging portion 1322 may also have other structural designs.

[0072] Optionally, the first connecting structure 131 and the second connecting structure are formed by an integral cutting process using the same material.

[0073] like Figure 6A 、 6B As shown in Figures 6E, the channel area 1311B has a first width a, the limiting area 1311A has a second width c, and the locking body 13221 has a third width b, wherein the first width a and the second width c are substantially equal, and the first width a and the second width c are at least twice the third width b, that is, a=c≥2b.

[0074] In this embodiment, the first connecting structure 131 has a first parallel side wall 131A; the sleeve portion 1321 of the second connecting structure 132 has a second parallel side wall 132A, and the engaging portion 1322 of the second connecting structure 132 includes an inclined side wall 1322A having a first height e; wherein, when the engaging portion 1322 is located in the engaging area 1311C, the spacing distance h between the first parallel side wall 131A of the first connecting structure 131 and the second parallel side wall 132A of the second connecting structure 132 is not less than the first height e of the inclined side wall 1322A, that is, h ≥ e (refer to Figure 6A , Figure 6B ).

[0075] In this embodiment, the anchor 11 further includes a non-return structure 111 (refer to Figure 2 ), which can be used to prevent the self-tapping screw 11 (anchor 11) from rotating synchronously in the second direction (ie Figure 2 F2 direction as shown) to ensure that the anchoring force of the anchor 11 is not affected when the dissociation operation is performed.

[0076] Optionally, the anti-return structure 111 may include at least one barb structure provided on the self-tapping screw 11, but is not limited thereto. Other structural designs may also be adopted, and this application does not impose any restrictions on this.

[0077] In summary, the anchoring instrument provided in the present application can maintain the anchoring force of the anchoring member against the tissue during the dissociation operation.

[0078] Furthermore, the present application utilizes a spiral snap-fit method to detachably connect the anchor and the catheter, so that when performing a dissociation operation, a spiral upward force needs to be applied to complete the dissociation operation between the two, thereby effectively reducing the risk of misinterpreting the dissociation operation.

[0079] In addition, the anchoring device of the present application can provide doctors with the ability to repeatedly perform dissociation and connection operations between the anchoring member and the catheter, thereby improving the anchoring effect of penetrating tissue.

[0080] In addition, the present invention has the advantages of simple structural design and fewer components, which can reduce manufacturing costs.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and not to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An anchoring device, characterized in that: include: anchors; catheter; as well as a connecting assembly comprising a first connecting structure provided on the anchor and a second connecting structure provided on the catheter; Wherein, the second connection structure is detachably coupled to the first connection structure so that the catheter and the anchor are in a connected state or a disconnected state; The first connecting structure and the second connecting structure are circumferentially rotated together, the first connecting structure and the second connecting structure have a first spiral direction, the anchor has a second spiral direction, and the first spiral direction is opposite to the second spiral direction; When the catheter and the anchor are in the disengaged state, the catheter is rotated relative to the anchor in a first direction along its circumference so that the second connection structure moves from a disengaged position to a locked position relative to the first connection structure, thereby switching the catheter and the anchor from the disengaged state to the connected state; When the catheter and the anchor are in the connected state, the catheter is rotated relative to the anchor along its circumference in a second direction opposite to the first direction, so that the second connection structure moves from the locked position to the disconnected position relative to the first connection structure, thereby switching the catheter and the anchor from the connected state to the disconnected state; The connecting assembly further includes a core shaft; wherein the first connecting structure is fixedly sleeved on the core shaft, so that the first connecting structure and the core shaft together form a recessed portion defining a limited position area, a passage area, and a locking area; The second connecting structure includes a sleeve portion and a clamping portion extending from the sleeve portion; The sleeve portion is detachably sleeved on the core shaft so that the sleeve portion is at least partially located within the limiting area, and the sleeve portion is stopped by the side wall of the limiting area, thereby limiting the maximum sleeve connection between the sleeve portion and the core shaft; The engaging portion can enter or leave the engaging area through the passage area, and when the engaging portion is located in the engaging area, the engaging portion can move relative to the engaging area between a locking position and a disengaging position.

2. The anchoring device according to claim 1, characterized in that The anchoring member comprises a self-tapping screw.

3. The anchoring device according to claim 2, characterized in that When the catheter and the anchor are in the connected state, the catheter is driven along its circumference to synchronously rotate the anchor toward the first direction, thereby controlling the anchor to perform an anchoring operation on a designated site.

4. The anchoring device according to claim 3, characterized in that The anchor member further includes a non-return structure for preventing the anchor member from rotating in the second direction.

5. The anchoring device according to claim 4, characterized in that The anti-return structure includes at least one barb structure provided on the self-tapping screw.

6. The anchoring device according to claim 3, characterized in that The first and second connecting structures have a first helical direction, and the anchor has a second helical direction, the first helical direction being opposite to the second helical direction.

7. The anchoring device according to claim 1, characterized in that The sleeve portion can be detachably sleeved on the core shaft by moving the catheter along its axial direction toward the anchoring member, and the sleeve portion is stopped by the side wall of the limiting area, thereby limiting the maximum sleeve degree between the sleeve portion and the core shaft; The engaging portion can be moved relative to the engaging area between the locking position and the disengaged position by rotating the catheter along its circumferential direction relative to the anchoring member.

8. The anchoring device according to claim 1, characterized in that The engaging portion includes an engaging body and a protrusion extending from the engaging body, wherein: The channel area has a first width, the limiting area has a second width, and the engaging body has a third width. The first width and the second width are substantially equal, and the first width and the second width are at least twice the third width. The first connecting structure has a first parallel side wall; the sleeve portion of the second connecting structure has a second parallel side wall, and the snap-fitting portion of the second connecting structure includes an inclined side wall with a first height; wherein, when the snap-fitting portion is located in the snap-fitting area, the spacing distance between the first parallel side wall and the second parallel side wall is not less than the first height.

9. The anchoring device according to claim 8, characterized in that The engaging portion is in a 7-shaped form; The first connection structure and the second connection structure are formed by an integral cutting process using the same material.

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