CN111419475A

CN111419475A - Assembling method of detachable connecting assembly and connecting assembly

Info

Publication number: CN111419475A
Application number: CN202010302301.5A
Authority: CN
Inventors: 王宝; 程增兵; 徐军; 林林
Original assignee: Shanghai Huihe Healthcare Technology Co Ltd
Current assignee: Shanghai Huihe Healthcare Technology Co Ltd
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-07-17

Abstract

The application provides a detachable coupling assembling and its assembly and disassembly method, this detachable coupling assembling includes: the catheter is provided with a catheter body and a cavity arranged in the catheter body; the proximal end of the operating part is provided with a first coupling piece; the guide wire penetrates through the cavity, and the far end of the guide wire is provided with a second coupling piece; one of the second coupling piece and the first coupling piece is provided with a groove, and the other coupling piece is provided with a protrusion which is assembled and matched with the groove; when the assembly is carried out, the groove and the protrusion are combined, the guide wire is dragged towards the near end, when the groove and the protrusion enter the cavity, the protrusion abuts against the inner wall of the tube body, and the guide wire drives the near end of the operating part to move into the cavity through the matching of the groove, the protrusion and the inner wall of the tube body; when the device is disassembled, the guide tube is moved to push the bulge out of the cavity, and the bulge is separated from the groove immediately. This application both can be with operating parts fast firmly fixed to in the pipe, convenient to detach again.

Description

Assembling method of detachable connecting assembly and connecting assembly

Technical Field

The embodiment of the application relates to the technical field of medical equipment, in particular to an assembling method of a detachable connecting assembly and the connecting assembly.

Background

There is a need in practice for securing a handle member of a medical device to a catheter prior to use and thereafter releasing the handle member from the catheter, such as an anchor for anchoring a heart valve, which needs to be secured to the catheter prior to use, and which is released after the catheter is used to deliver the anchor to a target site, which requires the anchor to be released from the catheter. The catheter is then used, for example, to deliver other components to the target site of the body, and after the components are released, the catheter is withdrawn. However, the existing operation member is difficult to be firmly fixed in the conduit, is easy to fall off, or is inconvenient to disassemble, so that the operation efficiency is low, and the like.

Therefore, how to make the operation member firmly connected with the conduit and easy to disassemble becomes a technical problem which needs to be solved in the prior art.

Disclosure of Invention

In view of the above, the present application provides a method for assembling and disassembling a detachable connection assembly and a connection assembly, which overcome or at least partially solve the above problems.

The embodiment of the application provides a detachable coupling assembling, this detachable coupling assembling includes:

the catheter is provided with a catheter body and a cavity arranged in the catheter body;

the proximal end of the operating part is provided with a first coupling piece; and

the guide wire penetrates through the cavity, and the far end of the guide wire is provided with a second coupling piece;

one of the second coupling piece and the first coupling piece is provided with a groove, the other one of the second coupling piece and the first coupling piece is provided with a protrusion, the protrusion is assembled and matched with the groove, when the groove and the protrusion enter the cavity, the protrusion abuts against the inner wall of the tube body, so that the guide wire drives the proximal end of the operating element to move into the cavity through the matching between the groove, the protrusion and the inner wall of the tube body, and when the catheter is moved to enable the protrusion to be pushed out of the cavity, the groove is separated from the protrusion.

Optionally, in the embodiments of the present application, the groove is axially offset from the protrusion or the groove is coaxial with the protrusion.

Optionally, in this embodiment, the groove is connected to a stop for stopping the protrusion from being separated from the groove when the guide wire is pulled proximally.

Optionally, in an embodiment of the present application, the first coupling element is a groove, the second coupling element is a protrusion, the operating element has a body, the stopping portion is connected to the body, the body and the stopping portion are respectively disposed at the distal end and the proximal end of the operating element, and the distal end of the stopping portion bends and extends towards the inside of the body to form the groove.

Optionally, in an embodiment of the present application, a first connector is provided on the catheter, and a second connector is provided on the guide wire for connecting with the first connector to fix the guide wire to the catheter.

Optionally, in this embodiment, the proximal end of the operating element is provided with a protrusion, the tube body is provided with a guiding groove, the guiding groove is matched with the protrusion, and when the guide wire is pulled towards the proximal end, the protrusion is aligned with the guiding groove to be clamped into the guiding groove, so that the operating element is fixed on the tube body.

Optionally, in this embodiment of the present application, the distal end of the operating member further has an anchoring head for being driven by the tube to rotate clockwise or counterclockwise to anchor human tissue.

Another aspect of the present application further provides an assembling and disassembling method for a detachable connection assembly, where the detachable connection assembly includes:

one of the second coupling piece and the first coupling piece is provided with a groove, and the other coupling piece is provided with a protrusion which is assembled and matched with the groove;

when the assembly is carried out, the groove and the protrusion are combined, the guide wire is dragged towards the near end, when the groove and the protrusion enter the cavity, the protrusion abuts against the inner wall of the tube body, and the guide wire drives the near end of the operating part to move into the cavity through the matching of the groove, the protrusion and the inner wall of the tube body; when the device is disassembled, the guide tube is moved to push the bulge out of the cavity, and the bulge is separated from the groove immediately.

Optionally, in this embodiment, the groove is connected to a stop, and the stop is used for stopping the protrusion from being separated from the groove when the guide wire is pulled proximally.

Optionally, in an embodiment of the present application, the first coupling member is a groove, the second coupling member is a protrusion, the operating element has a body, the stopping portion is connected to the body, and a distal end of the stopping portion bends and extends towards an inside of the body to form the groove.

Optionally, in an embodiment of the present application, a first connector is disposed on the catheter, and a second connector is disposed on the guide wire, and after the proximal end of the operating member moves into the cavity, the second connector is connected to the first connector to fix the guide wire to the catheter.

According to the technical scheme, the operating part is fixedly connected with the guide wire through the matching of the groove, the protrusion and the inner wall of the tube body, the protrusion is released from the tube body after the operating part is conveyed to a target position, and then the groove is separated from the protrusion, namely the operating part is separated from the guide wire and the catheter. Thereby not only the operating member can be quickly and firmly fixed in the conduit, but also the operating member is convenient to disassemble.

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. 1A is an exploded view of one embodiment of a removable connection assembly of the present application;

FIG. 1B is an assembled state diagram of one embodiment of the removable connection assembly shown in FIG. 1A;

FIG. 1C is a cross-sectional view of FIG. 1B;

fig. 2A is an exploded view of another embodiment of a removable connection assembly of the present application;

FIG. 2B is an assembled state diagram of another embodiment of the removable connection assembly shown in FIG. 2A;

FIG. 3 is a schematic view of a guidewire axis of a removable coupling assembly of the present application;

FIG. 4 is a schematic view of an embodiment of an operating member of a removable connection assembly of the present application;

fig. 5A is an exploded view of yet another embodiment of a removable connection assembly of the present application;

FIG. 5B is a cross-sectional view of yet another embodiment of the removable connection assembly shown in FIG. 5A in an assembled state;

fig. 6 is a schematic view of an embodiment of a detachable connection assembly according to the present application applied to human tissue.

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.

The term "proximal" refers to the end closer to the operator, and the term "distal" refers to the end farther from the operator. The "left side" refers to the relative position of the relevant components in two dimensions on the corresponding illustration.

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

Referring to fig. 1A to 4, in a specific implementation of the present application, a detachable connection assembly 1 includes: a catheter 10 having a tube 101 and a lumen 102 disposed within the tube 101; an operating member 20, a first coupling member 201 being provided at a proximal end of the operating member 20; and a guide wire 30 penetrating the cavity 102, wherein a second coupling member 301 is disposed at a distal end of the guide wire 30. One of the second coupling member 301 and the first coupling member 201 has a groove, and the other has a protrusion, and the protrusion is assembled with the groove. The groove is axially offset relative to the projection or the groove and the projection are coaxially arranged.

With continued reference to fig. 1A to 4, in an embodiment of the present application, the groove is axially offset from the protrusion, and specifically, the first coupling member 201 has an arc-shaped groove 211, and the second coupling member 301 has a spherical protrusion 311. When the protrusion 311 is inserted into the groove 211 for combination, a portion of the protrusion 311 is covered by the groove 211, and another portion of the protrusion 311 is exposed outside the groove 211. In the present application, the axial axes of the protrusion 311 and the guide wire 30 are defined as a, and as shown in fig. 1C, the axial axis of the groove 211 and the axial axis of the protrusion 311 (or the guide wire 30) are not coincident, i.e., offset.

Referring to fig. 4, the operating element 20 has a body 213, the body 213 is a cylinder, a right portion of the body 213 extends along the shape of the cylinder, a stopping portion 212 is formed above the groove 211, and a distal end of the stopping portion 212 bends and extends towards the inside of the body 213 to form the groove 211. Stop 212 blocks protrusion 311 from exiting recess 211 as guidewire 30 is drawn proximally. The diameter of the cylinder is substantially equal to the inner diameter of the pipe body 101. When the guide wire 30 is pulled proximally and the groove 211 and the protrusion 311 enter the cavity 102, the portion of the protrusion 311 exposed outside the groove 211 is tangent to the inner wall of the tube 101, so that the guide wire 30 drives the proximal end of the operating element 20 to move into the cavity 102 by the cooperation between the groove 211, the protrusion 311 and the inner wall of the tube 101, and the cylindrical portion of the first coupling element 201 fits the inner wall of the tube 101.

The tube 101 may be an integrally formed structure (as shown in fig. 1A and 1B), or a sleeve 111 (as shown in fig. 2A and 2B) may be disposed at the proximal end of the tube 101, and the sleeve 111 is disposed on the outer wall of the tube 101.

In one embodiment of the present application, the guide wire 30 needs to be fixed to the catheter 10, for example, the inner wall of the tubular body 101, after the proximal end of the operating member 20 is moved into the cavity 102, so that a first connector (not shown) can be provided on the catheter 10, and a second connector (not shown) can be provided on the guide wire 30, and the second connector can be connected to the first connector after the proximal end of the operating member 20 is moved into the cavity 102, so as to fix the guide wire 30 to the catheter 10.

In another embodiment of the present application, the proximal end of the operating member 20 is provided with a protrusion 202, and the body 101 is provided with a guide slot 113, which cooperates with the protrusion 202 to align the protrusion 202 with the guide slot 113 to snap it into the guide slot 113 when the guidewire 30 is pulled proximally, thereby securing the operating member 20 to the body 101. The design of the protrusion 202 and the guide slot 113 allows the operation element 20 to be more firmly connected to the catheter 10.

In another embodiment of the present application, the distal end of the operation element 20 further has an anchor head 203, the anchor head 203 can be fixed on the operation element 20, when the tube 101 is rotated clockwise or counterclockwise, the tube 101 drives the anchor head 203 to rotate clockwise or counterclockwise, so as to anchor human tissue.

Referring to fig. 5A and 5B, in this embodiment, the groove 211 is disposed coaxially with the protrusion 311. The protrusions 311 have an irregular shape, and the recesses 211 are matched with the protrusions 311. When the protrusion 311 is inserted into the groove 211 to be combined, the groove 211 covers a portion of the protrusion 311, and another portion (left portion in fig. 5B) of the protrusion 311 is exposed outside the groove 211. As shown in the figure, the left protrusion and the right protrusion of the protrusion 311 are designed asymmetrically, so that after the protrusion 311 is combined with the groove 211, the axial line of the groove 211 is coincident with the axial line of the protrusion 311 (or the guide wire 30) (the axial lines of the protrusion 311 and the guide wire 30 are defined as a), and thus the groove 211 and the protrusion 311 are arranged coaxially.

Referring to fig. 6, in this embodiment, the human tissue is a heart valve, the tube 101 delivers the anchor head 203 to a target position of the heart valve, and the anchor head 203 is rotated clockwise or counterclockwise under the driving of the tube 101 to anchor the valve, thereby achieving the repair of the valve. Of course, the human tissue is not limited to heart valves, but may be any other human tissue to which the connection assembly 1 of the present application is suitable to be applied.

When the medical endoscope is used, the groove 211 is combined with the protrusion 311, a part (the left part in fig. 1C and 5B) of the protrusion 311 is exposed outside the groove 211, the guide wire 30 is pulled towards the proximal end, when the groove 211 and the protrusion 311 enter the cavity 102, a part of the protrusion 311 exposed outside the groove 211 abuts against the inner wall of the tube body 101, the protrusion 311 is fixedly connected with the groove 211 by the abutting action, and the guide wire 30 drives the proximal end of the operating element 20 to move into the cavity 102 by the cooperation between the groove 211, the protrusion 311 and the inner wall of the tube body 101. When the guide wire 30 is pulled proximally, the protrusion 202 is aligned with the guide groove 113, and as the operating member 20 moves proximally into the cavity 102, the protrusion 202 is gradually engaged with the guide groove 113, so as to fix the operating member 20 to the tube 101 more firmly. Thereafter, the anchoring head 203 is rotated clockwise or counterclockwise to anchor the anchoring head 203 to the target body tissue, the protrusion 311 is automatically disengaged from the groove 211 by moving the catheter 10 proximally, the operating member 20 is left on the body tissue, and the catheter 10 and the guide wire 30 are withdrawn from the body.

In an embodiment of the present application, the protrusion is disposed on the first coupling member 201, the groove is disposed on the second coupling member 301, and the axial lines of the groove and the guide wire 30 are defined as a.

In conclusion, the operating part and the guide wire are fixedly connected through the matching between the groove and the protrusion and the inner wall of the tube body, the protrusion is released from the tube body after the operating part is conveyed to a target position, and then the groove and the protrusion are separated, namely the operating part is separated from the guide wire and the catheter. Thereby not only the operating member can be quickly and firmly fixed in the conduit, but also the operating member is convenient to disassemble.

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 assembling and disassembling method of a detachable connection assembly, the detachable connection assembly comprising:

2. A method according to claim 1, wherein the recess is axially offset from the projection or the recess is co-axially located with the projection.

3. The method of claim 1, wherein the groove is coupled to a stop for stopping the protrusion from exiting the groove when the guidewire is drawn proximally.

4. The method of claim 3, wherein the first coupling member is a groove, the second coupling member is a protrusion, the operating member has a body, the stopper is connected to the body, and the distal end of the stopper is bent to extend into the body to form the groove.

5. The method of claim 1, wherein a first connector is provided on the catheter and a second connector is provided on the guidewire, the second connector being connected to the first connector after the proximal end of the operating member is moved into the lumen to secure the guidewire to the catheter.

6. The method of claim 1, wherein the proximal end of the operating member includes a projection and the body includes a guide slot that cooperates with the projection to align the projection with the guide slot to snap the projection into the guide slot when the guidewire is drawn proximally to secure the operating member to the body.

7. The method of claim 1, wherein the distal end of the handle further comprises an anchor head adapted to be rotated clockwise or counterclockwise by the body to anchor tissue.

8. A detachable connection assembly, comprising:

9. The connection assembly of claim 8, wherein the recess is axially offset from the projection or the recess is coaxially disposed with the projection.

10. The connector assembly of claim 8 wherein the groove is coupled to a stop for stopping the protrusion from disengaging the groove when the guidewire is drawn proximally.

11. The connecting assembly of claim 10, wherein the first coupling member is a groove, the second coupling member is a protrusion, the operating member has a body, the stopper is connected to the body, the body and the stopper are respectively disposed at the distal end and the proximal end of the operating member, and the distal end of the stopper is bent to extend toward the inside of the body to form the groove.

12. A connection assembly according to claim 8, characterised in that a first connector is provided on the catheter and a second connector is provided on the guide wire for connection with the first connector to secure the guide wire to the catheter.

13. The coupling assembly of claim 8, wherein the proximal end of the operating member includes a projection, and the body includes a guide slot that cooperates with the projection to align the projection with the guide slot to snap the projection into the guide slot when the guidewire is drawn proximally to secure the operating member to the body.

14. The connector assembly of claim 8 wherein the distal end of the handle further includes an anchor head adapted to rotate clockwise or counterclockwise about the body to anchor tissue.