CN112472364A

CN112472364A - Conveying mechanism of valve clamping device

Info

Publication number: CN112472364A
Application number: CN202011305940.3A
Authority: CN
Inventors: 戴宇峰; 潘炳跃; 孙超
Original assignee: Shanghai Hanyu Medical Technology Co ltd
Current assignee: Shanghai Hanyu Medical Technology Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-03-12

Abstract

The invention relates to the technical field of medical equipment, in particular to a conveying mechanism of a valve clamping device, which comprises three conveying parts, wherein a first conveying part is used for passing through an interatrial septum and reaching a preset position after bending, and a second sheath pipe of a second conveying part passes through the first conveying part and is aligned to the preset position after bending; the third sheath of the third conveying component penetrates into the second conveying component and reaches a preset position along the bending direction of the first sheath and the second sheath, and a required instrument is conveyed in place.

Description

Conveying mechanism of valve clamping device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a conveying mechanism of a valve clamping device.

Background

The existing minimally invasive treatment operation is to convey a valve clamp to a mitral valve through a pushing device, and clamp an anterior leaflet and a posterior leaflet of the mitral valve simultaneously through opening and closing of the clamp, so that the aim of reducing mitral regurgitation is fulfilled.

Among various valve clamping devices, the valve clamping device developed according to the technical principle of surgical valve edge-to-edge suturing is the most certainly at present because of high safety, simple technical principle and great feasibility.

Therefore, how to safely, quickly and accurately deliver the valve clamping device into the body of a patient becomes an irretrievable key point in the interventional therapy technology.

Most of the existing delivery devices are used for delivering valves or valve stents, and the delivery of the valve clamp is rarely related, because the delivery device of the valve clamp not only needs to accurately and safely deliver the clamp in place, but also needs to accurately and conveniently control the opening and closing of the clamp, so as to achieve the purpose of clamping the mitral valve.

With relatively long delivery devices, such as for trans-femoral valve replacement, it is difficult for the surgical personnel to precisely control the position of the distal end of the delivery device because the forces applied to the handle end can cause unintended movement of the distal device. There is a need for an instrument that can precisely control the position of the distal end of the instrument.

For this reason, it is desirable to design a delivery mechanism that can deliver the valve binder into position quickly, accurately, and safely while supporting the ability to quickly and successfully capture the moving leaflet tissue.

Disclosure of Invention

The invention breaks through the difficult problems in the prior art and designs the conveying mechanism which can quickly, accurately and safely convey the valve clamping device in place and simultaneously support the valve clamping device to quickly and successfully capture the movable valve leaflet tissues.

In order to achieve the purpose, the invention designs a conveying mechanism of a valve clamping device, which is characterized in that: the method comprises the following steps:

the first conveying part comprises a first conveying handle and a first sheath pipe connected to the head end of the first conveying handle, and is used for passing through the interatrial septum, bending and reaching a preset position;

the second conveying part comprises a second conveying handle and a second sheath pipe connected to the head end of the second conveying part, and the second sheath pipe of the second conveying part penetrates into the first conveying part and is aligned to a preset position after being bent;

and the third conveying part comprises a third conveying handle and a third sheath pipe connected to the head end of the third conveying part, and the third sheath pipe of the third conveying part penetrates into the second conveying part to reach a preset position along the bending direction of the first sheath pipe and the second sheath pipe so as to convey the required instrument to the place.

Furthermore, the first conveying component and the second conveying component are respectively provided with a rotating component for controlling the bending of the first sheath pipe and the second sheath pipe.

Further, the third conveying handle comprises a lower handle, an upper handle, a locking component, rollers and a push rod component, wherein the push rod component is divided into a left secondary push rod component, a right secondary push rod component and a main push rod component, the upper handle is fixed above the front portion of the lower handle, a separation strip is arranged in the central position above the rear portion of the lower handle, the upper handle is provided with a first locking component for controlling the locking of the main connecting line, the two sides of the separation strip are respectively provided with the left secondary push rod component and the right secondary push rod component, the left secondary push rod component is provided with a second locking component, the right secondary push rod component is provided with a third locking component, the tail end of the lower handle is provided with the rollers, the roller end is provided with a threaded hole, and the main push rod component is connected to the rear portion of the rollers through.

Furthermore, a button is arranged on the roller.

Further, the main push rod part includes screw rod, thread pole, the thread pole includes main transfer chain, fixes the connecting piece at main transfer chain rear end and fixes the handle at the connecting piece rear end, the screw rod includes screw thread portion and smooth portion, the entrance hole has been seted up to screw rod one end, screw thread portion with the gyro wheel is connected, be equipped with breach one in the smooth portion, be equipped with breach two on the connecting piece, the transfer chain of thread pole penetrates the screw rod from the entrance hole and gets into third sheath pipe via the third transport handle, makes the connecting piece with smooth portion butt joint adopts the combination key block to link together connecting piece, smooth portion at breach one, breach two.

Furthermore, the left connecting wire penetrates into the left secondary push rod part and enters the third sheath tube through the upper handle, and the right connecting wire penetrates into the right secondary push rod part and enters the third sheath tube through the upper handle.

Further, the first sheath pipe, the second sheath pipe, the third sheath pipe are the same in structure and comprise an outer pipe, an inner pipe, a central pipe and a peripheral pipe, the inner pipe is located inside the outer pipe, the outer wall of the inner pipe is tightly attached to the inner wall of the outer pipe, the central pipe is located at the center of the inner pipe, the peripheral pipe is located between the central pipe and the inner pipe, and the pipe wall of the peripheral pipe is externally tangent to the pipe wall of the central pipe and internally tangent to the pipe wall of the inner pipe.

Further, the number of the peripheral pipes is at least 4.

Further, the layout mode of the peripheral tube is a rotationally symmetrical layout about a center point of the central tube.

Further, the pipe wall inside of the inlayer pipe of first sheath pipe and second sheath pipe all is equipped with transfers the curved inner chamber, it is equipped with in the curved inner chamber and transfers curved control line to transfer to inlay, the one end of transferring curved control line is connected with rotary part, and its other end then extends to the sheath pipe tip along the sheath pipe direction.

Compared with the prior art, the combination of various control elbow pipes can better reach the human anatomy structure with complicated far end, the combination of various functions of the conveying part can realize the states of opening, capturing, closing, dissociating and the like of the valve clamp, the state of the clamp can be more conveniently and independently controlled, and the sheath pipe has high flexibility, anti-torsion and high torque strength, and the mechanical transmission design adopted by the invention is more convenient for the operation of operating personnel.

Drawings

FIG. 1 is a schematic diagram of a delivery mechanism for a valve clip according to one embodiment.

FIG. 2 is a schematic diagram of a third delivery member of the delivery mechanism of the valve binder, according to one embodiment.

FIG. 3 is a schematic diagram of the main stem component of the delivery mechanism of the valve clip device in one embodiment.

FIG. 4 is a schematic diagram of a push rod member with combination keys in a delivery mechanism of a valve clamp according to an embodiment.

FIG. 5 is a schematic view of a first sheath of a delivery mechanism of a valve clip device in one embodiment passing through the atrial septum to a predetermined location.

FIG. 6 is a schematic view of a delivery mechanism of a valve clamp with a second sheath penetrating a first sheath aligned with a predetermined location, according to one embodiment.

FIG. 7 is a schematic view of a third sheath penetrating the second sheath into a predetermined position in a delivery mechanism of the valve clip according to one embodiment.

FIG. 8 is a schematic view of an adjustable angle of a first sheath and a second sheath of a delivery mechanism of a valve clamp according to one embodiment.

FIG. 9 is a cross-sectional view of a sheath in a delivery mechanism of a valve clip according to one embodiment.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but is not to be construed as being limited thereto.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", "top", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience in describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.

In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.

Referring to fig. 1, in one embodiment, the present invention contemplates a delivery mechanism for a valve clip, comprising:

the first conveying part comprises a first conveying handle 1-1 and a first sheath pipe 1-2 connected to the head end of the first conveying part, and is used for passing through the interatrial septum, bending and reaching a preset position, and can be seen in fig. 5;

the second conveying part comprises a second conveying handle 2-1 and a second sheath pipe 2-2 connected to the head end of the second conveying part, and the second sheath pipe 2-2 of the second conveying part penetrates into the first conveying part and is aligned with a preset position after being bent, as shown in fig. 6;

and the third conveying part comprises a third conveying handle 3-1 and a third sheath 3-2 connected to the head end of the third conveying part, and the third sheath 3-2 of the third conveying part penetrates into the second conveying part to reach a preset position along the bending direction of the first sheath 1-2 and the second sheath 2-2 so as to convey the required instrument to the position, which can be seen in fig. 7.

Preferably, the first conveying component and the second conveying component are respectively provided with a rotating component 4 for controlling the bending of the first sheath 1-2 and the second sheath 2-2, and the tightness of the bending control line can be controlled by rotating the rotating components, so that the bending degree of the sheaths is controlled.

Referring to fig. 2, the third delivery handle 3-1 comprises a lower handle 3-1-1, an upper handle 3-1-2, a locking component, a roller 3-1-9 and a push rod component, wherein the push rod component comprises a left secondary push rod component 3-1-5, a right secondary push rod component 3-1-6 and a main push rod component, the upper handle 3-1-2 is fixed above the front part of the lower handle 3-1-1, a separation strip 3-1-3 is arranged at the central position above the rear part of the lower handle 3-1-1, the upper handle 3-1-2 is provided with a first locking component 3-1-4 for controlling the locking of the main connecting line, and the left secondary push rod component 3-1-5 and the left secondary push rod component 3-1-3 are respectively arranged at the two sides of the separation strip 3-1-3, A right secondary push rod component 3-1-6, the left secondary push rod component 3-1-5 is provided with a second locking component 3-1-7, the right secondary push rod component 3-1-6 is provided with a third locking component 3-1-8, the tail end of the lower handle 3-1-1 is provided with a roller 3-1-9, the end of the roller 3-1-9 is provided with a threaded hole, the main push rod component is connected with the rear part of the roller 3-1-9 through the threaded hole, i.e., the screw of the main push rod member is connected with the roller 3-1-9 via the screw hole, wherein, the roller 3-1-9 is provided with a button 3-1-10, and the roller 3-1-9 can move on the screw rapidly after the button is pressed.

Referring to fig. 3 and 4, the main push rod part comprises a screw 3-1-11 and a main rod 3-1-12, the main rod 3-1-12 comprises a main conveying line, a connecting piece 3-1-12-1 fixed at the rear end of the main conveying line and a handle 3-1-12-2 fixed at the rear end of the connecting piece 3-1-12-1, the screw 3-1-11 comprises a threaded part 3-1-11-1 and a smooth part 3-1-11-2, one end of the screw 3-1-11 is provided with a wire inlet hole, the threaded part 3-1-11-1 is connected with the roller 3-1-9, the smooth part 3-1-11-2 is provided with a first notch, the connecting piece 3-1-12-1 is provided with a second notch, the conveying line of the main line rod 3-1-12 penetrates through the screw rod 3-1-11 from the line inlet hole and enters the third sheath tube 3-2 through the third conveying handle 3-1, so that the connecting piece 3-1-12-1 is in butt joint with the smooth part 3-1-11-2, and the connecting piece 3-1-12-1 and the smooth part 3-1-11-2 are connected together by clamping the combined key 5 in the first notch and the second notch.

Preferably, the left connecting wire penetrates into the left secondary push rod part 3-1-5 to enter the third sheath 3-2 through the upper handle 3-1-2, and the right connecting wire penetrates into the right secondary push rod part 3-1-6 to enter the third sheath 3-2 through the upper handle 3-1-2.

Referring to fig. 9, preferably, the first sheath tube 1-2, the second sheath tube 2-2, and the third sheath tube 3-2 have the same structure, and include an outer tube 21, an inner tube 22, a central tube 23, and a peripheral tube 24, where the inner tube 22 is located inside the outer tube 21, an outer wall of the inner tube 22 is tightly attached to an inner wall of the outer tube 21, the central tube 23 is located at a central position of the inner tube 22, the peripheral tube 24 is located between the central tube 23 and the inner tube 22, and a wall of the peripheral tube 24 is circumscribed with a wall of the central tube 23 and inscribed with a wall of the inner tube 22.

The number of the peripheral pipes 24 is at least 4, but it should be noted that more than 4 peripheral pipes 24 may be provided according to actual needs, and the peripheral pipes 24 are arranged in a rotationally symmetrical manner with respect to the center point of the central pipe 23.

Preferably, the inner tubes 22 of the first sheath tube 1-2 and the inner tube 22 of the second sheath tube 2-2 are both provided with a bending adjusting inner cavity 25 inside, a bending adjusting control line 26 is embedded in the bending adjusting inner cavity 25, one end of the bending adjusting control line 26 is connected with the rotating component 4, and the other end of the bending adjusting control line extends to the end of the sheath tube along the direction of the sheath tube.

The bending-adjusting inner cavity 25 can be respectively arranged above or below or above and below the inner part of the inner-layer pipe wall.

When the sheath is arranged above, the sheath can be controlled to bend upwards by pulling the bending control line 26; when the sheath is arranged below, the sheath can be controlled to bend downwards by pulling the bending control line 26; when the bending adjusting inner cavities 25 are arranged at the upper and lower positions, the sheath can be controlled to bend upwards or downwards by selectively pulling the corresponding bending adjusting control lines 26.

The number of the bending control lines 26 can be designed according to needs, and a plurality of bending control lines are arranged at large pulling force points.

In the specific implementation, the main connecting line is connected with the main clamp body of the valve clamp, the left connecting line and the right connecting line are respectively connected with the left handle and the right handle of the upper clamp of the valve clamp, the left connecting line and the right connecting line are respectively pulled by pushing the left secondary push rod part and the right secondary push rod part forwards and backwards, so that the opening and closing of the upper clamp of the valve clamp are controlled, when the required opening and closing degree is reached, the left connecting line and the right connecting line are locked by the second locking part and the third locking part, and at the moment, the left secondary push rod part and the right secondary push rod part cannot be pushed, so that the serious errors such as mistaken pushing and the like in the operation process are prevented.

After the valve clamping device is connected, firstly operating the first conveying component to pass through the interatrial septum, rotating the rotating component to control the first sheath to bend slowly, so that the free end of the first sheath reaches a preset position above the mitral valve, referring to figure 5, then penetrating the second sheath from the rear of the first conveying component, so that the free end of the second sheath penetrates out through the first sheath with the adjusted angle, rotating the rotating component to control the second sheath to bend slowly, so that the free end of the second sheath is vertically opposite to the upper part of the mitral valve, referring to figure 6, finally penetrating the third sheath with the valve clamping device installed from the rear of the second conveying component, penetrating out from the free end of the second sheath, entering the aligned mitral valve position, then locking the main connecting line by using the first locking component to prevent the clamp from moving back and forth, then controlling the upward clamping movement of the valve clamping device by using the left secondary push rod component and the right secondary push rod component, and carrying out interventional therapy.

After the treatment is finished, the combination key is removed, the main line rod can be taken out, the intervenient object is left in the body of the patient, and then the conveying component is taken out in sequence, so that the conveying of the valve clamping device is finished.

Claims

1. A delivery mechanism of a valve clamping device is characterized in that: the method comprises the following steps:

the first conveying part comprises a first conveying handle (1-1) and a first sheath tube (1-2) connected to the head end of the first conveying part, and is used for passing through the interatrial septum, bending and reaching a preset position;

the second conveying part comprises a second conveying handle (2-1) and a second sheath pipe (2-2) connected to the head end of the second conveying part, and the second sheath pipe (2-2) of the second conveying part penetrates through the first conveying part and is aligned to a preset position after being bent;

and the third conveying part comprises a third conveying handle (3-1) and a third sheath (3-2) connected to the head end of the third conveying part, and the third sheath (3-2) of the third conveying part penetrates into the second conveying part to reach a preset position along the bending direction of the first sheath (1-2) and the second sheath (2-2) so as to convey required instruments to the position.

2. The delivery mechanism of a valve clip according to claim 1, wherein: the first conveying component and the second conveying component are respectively provided with a rotating component (4) for controlling the bending of the first sheath pipe (1-2) and the second sheath pipe (2-2).

3. The delivery mechanism of a valve clip according to claim 1, wherein: the third conveying handle (3-1) comprises a lower handle (3-1-1), an upper handle (3-1-2), a locking component, rollers (3-1-9) and a push rod component, wherein the push rod component comprises a left secondary push rod component (3-1-5), a right secondary push rod component (3-1-6) and a main push rod component, the upper handle (3-1-2) is fixed above the front part of the lower handle (3-1-1), a separation strip (3-1-3) is arranged in the central position above the rear part of the lower handle (3-1-1), the upper handle (3-1-2) is provided with a first locking component (3-1-4) for controlling the locking of the main connecting line, and the two sides of the separation strip (3-1-3) are respectively provided with a left secondary push rod component (3-1-3) -5) and a right secondary push rod component (3-1-6), wherein the left secondary push rod component (3-1-5) is provided with a second locking component (3-1-7), the right secondary push rod component (3-1-6) is provided with a third locking component (3-1-8), the tail end of the lower handle (3-1-1) is provided with a roller (3-1-9), the end of the roller (3-1-9) is provided with a threaded hole, and the main push rod component is connected to the rear part of the roller (3-1-9) through the threaded hole.

4. The delivery mechanism of a valve clip according to claim 3, wherein: the roller (3-1-9) is provided with a button (3-1-10).

5. The delivery mechanism of a valve clip according to claim 3, wherein: the main push rod component comprises a screw rod (3-1-11) and a main line rod (3-1-12), the main line rod (3-1-12) comprises a main conveying line, a connecting piece (3-1-12-1) fixed at the rear end of the main conveying line and a handle (3-1-12-2) fixed at the rear end of the connecting piece (3-1-12-1), the screw rod (3-1-11) comprises a threaded part (3-1-11-1) and a smooth part (3-1-11-2), one end of the screw rod (3-1-11) is provided with a wire inlet hole, the threaded part (3-1-11-1) is connected with the roller (3-1-9), and the smooth part (3-1-11-2) is provided with a first notch, the connecting piece (3-1-12-1) is provided with a second notch, the conveying line of the main line rod (3-1-12) penetrates through the screw rod (3-1-11) from the line inlet hole and enters the third sheath tube (3-2) through the third conveying handle (3-1), so that the connecting piece (3-1-12-1) is butted with the smooth part (3-1-11-2), and the connecting piece (3-1-12-1) and the smooth part (3-1-11-2) are connected together by clamping a combined key (5) in the first notch and the second notch.

6. The delivery mechanism of a valve clip according to claim 3, wherein: the left connecting wire penetrates into the left secondary push rod part (3-1-5) and enters the third sheath tube (3-2) through the upper handle (3-1-2), and the right connecting wire penetrates into the right secondary push rod part (3-1-6) and enters the third sheath tube (3-2) through the upper handle (3-1-2).

7. The delivery mechanism of a valve clip according to claim 1, wherein: the structure of the first sheath pipe (1-2), the second sheath pipe (2-2) and the third sheath pipe (3-2) is the same, and the sheath pipe comprises an outer layer pipe (21), an inner layer pipe (22), a central pipe (23) and a peripheral pipe (24), wherein the inner layer pipe (22) is arranged inside the outer layer pipe (21), the outer wall of the inner layer pipe (22) is tightly attached to the inner wall of the outer layer pipe (21), the central pipe (23) is arranged at the central position of the inner layer pipe (22), the peripheral pipe (24) is arranged between the central pipe (23) and the inner layer pipe (22), and the pipe wall of the peripheral pipe (24) is externally tangent to the pipe wall of the central pipe (23) and internally tangent to the pipe wall of the inner layer pipe (22).

8. The delivery mechanism of a valve clip according to claim 7, wherein: the number of said peripheral tubes (24) is at least 4.

9. The delivery mechanism of a valve clip according to claim 7, wherein: the peripheral tube (24) is arranged in a rotationally symmetrical manner about a center point of the central tube (23).

10. The delivery mechanism of a valve clip according to claim 7, wherein: the utility model discloses a pipe bending device, including first sheath pipe (1-2), inlayer pipe (22) of first sheath pipe (1-2) and second sheath pipe (2-2) the pipe wall inside of inlayer pipe (22) all is equipped with transfers curved inner chamber (25), it is equipped with in curved inner chamber (25) to transfer curved control line (26), the one end of transferring curved control line (26) is connected with rotary part (4), and its other end then extends to the sheath pipe tip along the sheath pipe direction.