CN216603186U - Anchoring device - Google Patents

Abstract

The utility model provides an anchoring instrument, which mainly comprises an anchoring piece, a conduit and a connecting assembly, wherein the connecting assembly comprises a first connecting structure arranged on the anchoring piece and a second connecting structure arranged on the conduit, and the second connecting structure is detachably combined to the first connecting structure so as to enable the conduit and the anchoring piece to be in a connected state or a disconnected state. Therefore, the utility model has the advantages of simple structural design and no influence on the anchoring force of the attacking tissue in the dissociation operation. In addition, the utility model can provide the repeated execution of the dissociation operation and the anchoring operation between the catheter and the anchor, thereby improving the anchoring effect.

Description

Anchoring device

Technical Field

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

Background

In various surgical operations, such as a heart valve intervention repair operation, a distal operation is often performed through a catheter to allow a self-tapping screw to be driven into a human tissue for anchoring, and the catheter is also detached from the self-tapping screw after the anchoring operation is completed.

The prior art provides a mode that a catheter is connected with a self-tapping screw through threads, and the catheter and the self-tapping screw can be separated through reverse rotation after the self-tapping screw taps into tissues. However, the technique has a problem in that the self-tapping screw, which is driven into the tissue when the detachment operation of the catheter is performed, tends to be rotated out of the tissue due to the opposite directions of the screw threads of the detached screw and the self-tapping screw, which are driven into the tissue, greatly reducing the anchoring force, and in some cases, may be completely rotated out of the tissue during the detachment.

The prior art also provides a connection mode of mutually matching the protrusion and the groove, and the separation of the protrusion and the groove is realized by cutting off the drawn wire in the middle, so that the purpose of dissociation is achieved. However, a potential problem with this technique is that in order to reduce the risk of misinterpretation during transport, the pull wire must be kept in a tight state at all times, resulting in tension in the system and, in addition, the presence of the pull wire also occupies the interior space of the catheter.

In view of the above, there is a need for an anchoring device that is easy to detach and does not affect anchoring strength.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an anchoring device that overcomes or at least partially solves the above problems.

Embodiments of the present invention provide an anchoring instrument comprising an anchor; a conduit; and a connection assembly including a first connection structure provided on the anchor and a second connection structure provided on the conduit; wherein the second connecting structure is detachably coupled to the first connecting structure so as to be in a connected state or a disconnected state between the catheter and the anchor.

Optionally, the anchor comprises a self-tapping screw.

Optionally, when the conduit and the anchor are in the disconnected state, the conduit and the anchor are switched from the disconnected state to the connected state by rotating the conduit in a first direction along its circumference relative to the anchor to move the second connecting structure from the disconnected position to the locked position relative to the first connecting structure; when the catheter and the anchor are in the connection state, the catheter is driven to rotate towards the anchor synchronously towards the first direction along the circumferential direction of the catheter, so that the anchor is controlled to perform anchoring operation on a designated position; when the connecting state between the catheter and the anchor is established, the catheter and the anchor are switched from the connecting state to the disconnecting state by rotating the catheter relative to the anchor in a second direction opposite to the first direction along the circumferential direction of the catheter to move the second connecting structure relative to the first connecting structure from the locking position to the disconnecting position.

Optionally, the anchor further comprises a backstop structure for preventing rotation of the anchor in the second direction.

Optionally, the backstop structure comprises at least one barb structure provided on the self-tapping screw.

Optionally, 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 the second helical direction.

Optionally, the connection assembly further comprises a mandrel; the first connecting structure is fixedly sleeved on the mandrel, so that a concave part for defining a limiting area, a channel area and a clamping area is formed by the first connecting structure and the mandrel; the second connecting structure comprises a sleeve joint part and a clamping part extending from the sleeve joint part; the sleeve joint part is detachably sleeved on the mandrel, so that the sleeve joint part is at least partially positioned in the limiting area, and the sleeve joint part is stopped by the side wall of the limiting area, so that the maximum sleeve joint degree between the sleeve joint part and the mandrel is limited. The clamping part can enter or leave the clamping area through the channel area, and when the clamping part is located in the clamping area, the clamping part can move between a locking position and a releasing position relative to the clamping area.

Optionally, the catheter is moved along the axial direction thereof toward a direction close to the anchor, so that the sleeve joint part is detachably sleeved on the mandrel, and the side wall of the limiting region is used for providing a stop for the sleeve joint part, so as to limit the maximum sleeve joint degree between the sleeve joint part and the mandrel; the catheter can be rotated relative to the anchor along its circumference to move the engagement portion relative to the engagement region between a locked position and an unlocked position.

Optionally, the engaging portion includes an engaging body and a protrusion extending from the engaging body, and wherein the channel region has a first width, the limiting region has a second width, 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 as large as the third width; the first connecting structure has first parallel side walls; the socket joint part of the second connecting structure is provided with a second parallel side wall, and the clamping part of the second connecting structure comprises an inclined side wall with a first height; when the clamping part is positioned in the clamping area, the distance between the first parallel side wall and the second parallel side wall is not less than the first height.

Optionally, the engaging part is 7-shaped; the first connecting structure and the second connecting structure are formed by adopting an integrated cutting process of the same raw materials.

According to the technical scheme, the anchoring instrument has the advantage that the anchoring force attacking the tissue cannot be influenced by the dissociation operation.

Moreover, through utilizing spiral buckle form to connect anchor and pipe, can effectively reduce the risk that the mistake dissociates.

In addition, the anchoring instrument has the advantages of simple structural design, small number of parts and no influence on anchoring force in the dissociation process.

In addition, the anchoring instrument of the utility model also repeatedly performs the connection and disconnection operations, so as to facilitate the improvement of the anchoring effect of the tissues attacked during the operation.

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, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present invention, and it is also possible for a person skilled in the art to obtain other drawings based on the drawings.

Fig. 1 and 2 are views showing a structural example of an anchoring instrument according to a first embodiment of the present invention, in which fig. 1 is a view showing an example in which an anchor and a catheter are in a connected state, and fig. 2 is a view showing an example in which the anchor and the catheter are in a disconnected state;

fig. 3 and 4 are schematic structural views of a connecting assembly according to another embodiment of the present invention;

fig. 5A to 5C are schematic views illustrating an exploded structure of the connecting assembly shown in fig. 1 and 2;

FIGS. 6A-6E are schematic views of the linkage assembly shown in FIGS. 1 and 2 at various angles;

fig. 7 is a schematic view of an embodiment of the anchoring device of the utility model in use.

Element number

1: an anchoring instrument;

11: an anchor;

111: a non-return structure;

12: a conduit;

13: a connecting assembly;

131: a first connecting structure;

131A a first parallel sidewall;

1311: a recessed portion;

1311A: a limiting region;

1311B: a channel region;

1311C: a clamping area;

1312A: a locked position;

1312B: a dissociation site;

132: a second connecting structure;

132A: a second parallel sidewall;

1321: a socket joint part;

1322: a fastening part;

1322A: oblique side wall

13221: clamping the body;

13222: a convex portion;

133: a mandrel;

Detailed Description

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

In view of the above, the present invention provides an anchoring device, which can effectively improve the above technical problems, in the conventional anchoring device applied to surgical operations (e.g., heart valve intervention repair operations), since the self-tapping screw tapping into the tissue tends to be screwed out of the tissue during the detachment of the catheter.

The following further describes specific implementation of the embodiments of the present invention with reference to the drawings.

The anchoring device 1 of the present invention may be applied to a heart valve intervention repair operation (refer to the embodiment shown in fig. 7), but is not limited thereto, and may be applied to any other surgical operation requiring tissue anchoring.

As shown in fig. 1 and 2, the anchoring device 1 of the present invention mainly comprises an anchor 11, a catheter 12, and a connecting member 13.

In the present embodiment, the anchor 11 is, for example, a self-tapping screw. The connecting assembly 13 includes a first connecting structure 131 disposed on the anchor 11 and a second connecting structure 132 disposed on the conduit 12.

Specifically, the second connecting structure 132 is detachably coupled to the first connecting structure 131, so as to be in a connected state or a disconnected state between the catheter 12 and the anchor 11.

In the present embodiment, when the catheter 12 and the anchor 11 are in the detached state (i.e., the state shown in fig. 2), the catheter 12 is rotated along the circumference thereof in a first direction (e.g., the direction F1 shown in fig. 2) relative to the anchor 11, so that the second connecting structure 132 moves from the detached position to the locked position relative to the first connecting structure 131, thereby switching the catheter 12 and the anchor 11 from the detached state to the connected state (i.e., the state shown in fig. 1).

In addition, when the catheter 12 and the anchor 11 are connected, the anchor 11 can be controlled to perform an anchoring operation on a designated portion (e.g., human tissue shown in fig. 7) by driving the catheter 12 along its circumference to rotate toward the anchor 11 in a first direction (e.g., direction F1 shown in fig. 2).

Furthermore, when the connecting state between the conduit 12 and the anchor 11 is established, the conduit 12 and the anchor 11 are switched from the connecting state to the disconnecting state by rotating the conduit 12 along the circumferential direction thereof relative to the anchor 11 in a second direction (e.g. the direction F2 shown in fig. 2) opposite to the first direction, so that the second connecting structure 132 moves from the locking position to the disconnecting position relative to the first connecting structure 131.

In the present embodiment, the first connecting structure 131 and the second connecting 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.

For example, in the embodiment shown in fig. 1 and 2, the spiral directions of the first connecting structure 131 and the second connecting structure 132 are in a left trend, and the spiral direction of the anchor 11 is in a right trend, so that the release between the anchor 11 and the conduit 12 can be realized only by applying a spiral ascending force when the release operation between the anchor 11 and the conduit 12 is performed.

In another embodiment, please refer to fig. 3 and fig. 4, the first connecting structure 131 and the second connecting structure 132 of the connecting component 13 may also be designed as 3D engaging structures with mutually adaptive structures, and the specific engaging structure design is not limited to that shown in the drawings and can be adjusted according to actual requirements.

Referring to fig. 5A to 5C, in the present embodiment, the connecting assembly 13 further includes a core shaft 133, and the first connecting structure 131 is fixedly disposed on the periphery of the core shaft 133.

As shown in fig. 6A to 6E, a recessed portion 1311 defining a limiting region 1311A, a channel region 1311B and a fastening region 1311C may be formed by the first connecting structure 131 sleeved on the outer periphery of the mandrel 133, and in the present embodiment, the channel region 1311B may be between the limiting region 1311A and the fastening region 1311C.

Moreover, the second connecting structure 132 further includes a sleeve portion 1321 and a fastening portion 1322 extending from the sleeve portion 1321, wherein the sleeve portion 1321 is detachably sleeved on the core shaft 133, so that the sleeve portion 1321 is at least partially located in the limiting region 1311A, and the sidewall of the limiting region 1311A is used to provide a stop for the sleeve portion 1321, so as to limit the maximum sleeve degree between the sleeve portion 1321 and the core shaft 133.

Specifically, the catheter 12 can be moved along its axial direction toward the anchor 11 (refer to direction D1 in fig. 2) so that the second connecting structure 132 is sleeved on the core shaft 133 and provides a stop for the sleeve portion 1321 by the sidewall of the limiting region 1311A to limit the maximum distance that the catheter 12 can move along direction D1 relative to the anchor 11. Conversely, when the catheter 12 is moved in the axial direction thereof away from the anchor 11 (refer to the direction D2 in fig. 2), the second connecting structure 132 is disengaged from the mandrel 133, so that the detachment operation between the catheter 12 and the anchor 11 is completed.

Furthermore, the engaging portion 1322 of the second connecting structure 132 can enter or leave the engaging region 1311C through the channel region 1311B.

For example, referring to fig. 6B, when conduit 12 is moved in a direction toward anchor 11 along its axial direction, engaging portion 1322 of second connecting structure 132 may enter from restricted area 1311A into engaging area 1311C via channel area 1311B, whereas when conduit 12 is moved in a direction away from anchor 11 along its axial direction, engaging portion 1322 of second connecting structure 132 may enter from engaging area 1311C into restricted area 1311A via channel area 1311B.

In the present embodiment, when the engaging portion 1322 is located in the engaging region 1311C, the engaging portion 1322 can move between the locking position 1312A and the releasing position 1312B relative to the engaging region 1311C to provide the second connecting structure 132 and the first connecting structure 131 to be fixedly coupled, or to provide the second connecting structure 132 and the first connecting structure 131 to be separated from each other.

Specifically, the engaging portion 1322 can be moved between the locked position and the unlocked position with respect to the engaging region 1311C by rotating the conduit 12 relative to the anchor 11 in the circumferential direction thereof.

For example, when conduit 12 is rotated in its axial direction relative to anchor 11 in the direction F1 shown in fig. 2, catch 1322 may be provided to move from off position 1312B to locked position 1312A of catch region 1311C, whereas when conduit 12 is rotated in its axial direction relative to anchor 11 in the direction F2 shown in fig. 2, catch 1322 may be provided to move from locked position 1312A to off position 1312B of catch region 1311C.

In this embodiment, the engaging portion 1322 of the second connecting structure 132 further includes an engaging body 13221 and a protrusion 13222 extending from the engaging body 13221, such that the engaging portion 1322 is 7-shaped as a whole, but not limited thereto, the engaging portion 1322 may also have other structural designs.

Alternatively, the first and second connection structures 131 and 131 are formed by an integral cutting process using the same raw material

As shown in fig. 6A, 6B and 6E, the channel region 1311B has a first width a, the stopper region 1311A has a second width c, and the engaging 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, i.e., a ≧ c ≧ 2B.

In the present embodiment, the first connection structure 131 has a first parallel sidewall 131A; the socket portion 1321 of the second connecting structure 132 has a second parallel sidewall 132A, and the engaging portion 1322 of the second connecting structure 132 includes an inclined sidewall 1322A having a first height e; when the engaging portion 1322 is located in the engaging region 1311C, a distance h between the first parallel sidewall 131A of the first connecting structure 131 and the second parallel sidewall 132A of the second connecting structure 132 is not less than the first height e of the inclined sidewall 1322A, i.e., h ≧ e (refer to fig. 6A and fig. 6B).

In the present embodiment, the anchor 11 further includes a non-return structure 111 (refer to fig. 2) for preventing the self-tapping screw 11 (anchor 11) from rotating in the second direction (i.e. the direction F2 shown in fig. 2) in response to the detaching operation of the guide tube 12, so as to ensure that the anchoring force of the anchor 11 is not affected when the detaching operation is performed.

Alternatively, the anti-reverse structure 111 may include at least one barb structure provided on the tapping screw 11, but not limited thereto, and other structural designs may be adopted, and the utility model is not limited thereto.

In summary, the anchoring device provided by the utility model can prevent the anchoring force of the anchor against the attack tissue from being affected when the dissociation operation is performed.

Moreover, the utility model utilizes the spiral buckle mode to detachably connect the anchoring piece and the conduit, so that the dissociation operation between the anchoring piece and the conduit can be completed only by applying a spiral ascending acting force when the dissociation operation is executed, thereby effectively reducing the risk of misunderstanding the dissociation operation.

In addition, the anchoring device of the utility model can provide the physician with the ability to repeatedly perform the detachment and attachment operations between the anchor and the catheter to facilitate enhanced anchoring of the attacked tissue.

In addition, the utility model also has the advantages of simple structural design and few component parts, and can reduce the manufacturing cost.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will 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 of the embodiments of the present invention.

Claims (10)

1. An anchoring instrument, comprising:

an anchor;

a conduit; and

a connection assembly including a first connection structure disposed on the anchor and a second connection structure disposed on the conduit;

wherein the second connecting structure is detachably coupled to the first connecting structure so as to be in a connected state or a disconnected state between the catheter and the anchor.

2. The anchoring instrument of claim 1, wherein the anchor comprises a self-tapping screw.

3. The anchoring instrument of claim 2,

when the catheter and the anchor are in the dissociation state, the catheter and the anchor are switched from the dissociation state to the connection state by rotating the catheter along the circumferential direction of the catheter towards a first direction relative to the anchor so that the second connection structure moves from the dissociation position to the locking position relative to the first connection structure;

when the catheter and the anchor are in the connection state, the catheter is driven to rotate towards the anchor synchronously towards the first direction along the circumferential direction of the catheter, so that the anchor is controlled to perform anchoring operation on a designated part;

when the connecting state between the catheter and the anchor is established, the catheter and the anchor are switched from the connecting state to the disconnecting state by rotating the catheter relative to the anchor in a second direction opposite to the first direction along the circumferential direction of the catheter to move the second connecting structure relative to the first connecting structure from the locking position to the disconnecting position.

4. The anchoring instrument of claim 3, wherein the anchor further comprises a backstop structure for preventing rotation of the anchor in the second direction.

5. An anchoring device as defined in claim 4, wherein said backstop structure includes at least one barb structure provided on said self-tapping screw.

6. The anchoring instrument of claim 3 wherein 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 the second helical direction.

7. An anchoring instrument as recited in any one of claims 3 or 6, wherein said connection assembly further includes a mandrel; wherein the content of the first and second substances,

the first connecting structure is fixedly sleeved on the mandrel, so that a concave part for defining a limiting area, a channel area and a clamping area is formed by the first connecting structure and the mandrel;

the second connecting structure comprises a sleeve joint part and a clamping part extending from the sleeve joint part;

the sleeve joint part is detachably sleeved on the mandrel so as to be at least partially positioned in the limiting area, and the sleeve joint part is stopped by the side wall of the limiting area so as to limit the maximum sleeve joint degree between the sleeve joint part and the mandrel;

the clamping part can enter or leave the clamping area through the channel area, and when the clamping part is positioned in the clamping area, the clamping part can move between a locking position and a releasing position relative to the clamping area.

8. The anchoring instrument of claim 7,

the guide pipe can move towards the direction close to the anchoring piece along the axial direction of the guide pipe, so that the sleeve joint part can be detachably sleeved on the mandrel, and the sleeve joint part is stopped by the side wall of the limiting area, so that the maximum sleeve joint degree between the sleeve joint part and the mandrel is limited;

the catheter can be rotated relative to the anchor along its circumference to move the engagement portion relative to the engagement region between a locked position and an unlocked position.

9. The anchoring instrument of claim 7, wherein the engaging portion includes an engaging body and a protrusion extending from the engaging body, and wherein,

the channel area has a first width, the limiting area has a second width, the clamping body has a third width, the first width is substantially equal to the second width, and the first width and the second width are at least twice as large as the third width;

the first connecting structure has first parallel side walls; the socket joint part of the second connecting structure is provided with a second parallel side wall, and the clamping part of the second connecting structure comprises an inclined side wall with a first height; when the clamping part is positioned in the clamping area, the distance between the first parallel side wall and the second parallel side wall is not less than the first height.

10. The anchoring instrument of claim 9,

the clamping part is 7-shaped;

the first connecting structure and the second connecting structure are formed by adopting an integrated cutting process of the same raw materials.

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