CN218890040U

CN218890040U - Pre-expansion saccule

Info

Publication number: CN218890040U
Application number: CN202221959146.5U
Authority: CN
Inventors: 宋光远; 刘新民; 卢志南; 姚晶
Original assignee: Beijing Anzhen Hospital
Current assignee: Beijing Anzhen Hospital
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-04-21
Anticipated expiration: 2032-07-27

Abstract

The utility model discloses a pre-expansion balloon, which belongs to the technical field of medical instruments and comprises a handle, a filling pipe, a balloon, a wire guide pipe, a bending control wire and a bending control operation part, wherein the filling pipe comprises a hard first filling part and a soft second filling part, the balloon is connected to the second filling part, the wire guide pipe is arranged in the filling pipe in a penetrating way, the wire guide pipe comprises a hard first wire guide part and a soft second wire guide part, one end of the second wire guide part penetrates through the balloon and is provided with a puncture head, the bending control wire is arranged between the filling pipe and the wire guide pipe, the bending control wire is connected to the bending control operation part, and the bending control operation part is used for driving the bending control wire to axially move in the filling pipe. Through the removal of control curved silk in filling pipe, drive second filling portion and second seal wire portion and do crooked action, make the sacculus more easy through the aorta stride the bow, be difficult for stabbing the blood vessel, guarantee the trafficability characteristic of sacculus in the blood vessel simultaneously under the effect of first filling portion and first seal wire portion, make operation in-process operation more convenient and safe.

Description

Pre-expansion saccule

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a pre-expanding balloon.

Background

In aortic valve replacement surgery, it is difficult to deliver a prosthetic valve to the site of the native valve because of the severe calcification of the native valve in most patients, and therefore it is necessary to expand the already calcified native valve in the patient using a pre-dilation balloon, and then perform valve replacement.

At present, a common pre-expansion balloon generally comprises a handle, a tube body and a balloon, wherein the tube body of the common pre-expansion balloon is relatively high in hardness and not easy to bend, when the balloon passes through an aortic arch, the direction of the balloon is not easy to control, and a puncture head at the end part of the balloon is easy to puncture a blood vessel. If the tube portion is made soft, the tube can be bent more easily, but the tube has poor passage in the blood vessel and is not easily moved in the blood vessel.

Therefore, the existing pre-expansion balloon has the defect that the trafficability and the bending property cannot be simultaneously combined, is difficult to pass through an aortic arch, and is easy to stab blood vessels.

Disclosure of Invention

Therefore, on the premise of ensuring trafficability, the direction of the balloon is easier to control, and the risk of puncturing blood vessels is reduced.

The utility model provides a pre-broad balloon, comprising:

a handle provided with a filling inlet and a guide wire inlet;

the filling pipe comprises a first filling part and a second filling part, the first filling part is a hard pipe, the second filling part is a soft pipe, one end of the first filling part is connected to the handle and communicated with the filling inlet, and the second filling part is connected to one end of the first filling part far away from the handle;

the balloon is connected to one end of the second filling part far away from the first filling part;

the guide wire tube is arranged in the filling tube in a penetrating mode, the outer diameter of the guide wire tube is smaller than the inner diameter of the filling tube, the guide wire tube comprises a first guide wire part and a second guide wire part, the first guide wire part is a hard tube and is correspondingly positioned at the inner side of the first filling part, one end of the first guide wire part is connected to the handle and is communicated with the guide wire inlet, the second guide wire part is a soft tube and is correspondingly positioned at the inner side of the second filling part, the second guide wire part is connected to one end, far away from the guide wire inlet, of the first guide wire part, one end, far away from the first guide wire part, of the second guide wire part penetrates through the balloon and is provided with a puncture head, and the puncture head is provided with a guide wire outlet;

the bend control wire is arranged in the filling pipe and is positioned at the outer side of the guide wire pipe, the bend control wire is parallel to the axis of the filling pipe, and one end of the bend control wire is fixedly connected with one side, close to the sacculus, of the inner wall of the second filling part and/or the outer wall of the second guide wire part;

the bending control operation part is arranged at the other end of the bending control wire and is positioned outside the handle, and the bending control operation part is used for driving the bending control wire to axially move in the filling pipe along the self.

Optionally, the bending control operation part comprises a bending control ring, and the bending control ring is connected outside the handle in a surrounding manner.

Optionally, the handle is internally provided with a cavity, the first filling part is communicated with the handle, the filling inlet is communicated with the first filling part through the cavity in the handle, and the guide wire inlet penetrates through the handle and is connected with the first guide wire part.

Optionally, the accuse curved ring rotationally overlaps and establishes on the handle, the handle inboard is equipped with the slider, accuse curved silk is fixed on the slider, the handle corresponds accuse curved ring department and has seted up along accuse curved silk axial spout, the slider slidable inlays and establishes in the spout, just the slider with accuse curved inner wall threaded connection.

Optionally, an annular mounting groove is formed in the bending control ring, the bending control ring is rotatably sleeved in the mounting groove, and the sliding groove is communicated with the mounting groove.

Optionally, two spaced rotary sealing rings are arranged between the control bending ring and the handle, and the sliding groove is positioned between the two rotary sealing rings.

Optionally, the pre-expanding balloon further comprises a fixing ring, the fixing ring is fixed inside one side of the second filling part, which is close to the balloon, the second guide wire part is penetrated and fixed inside the fixing ring, one end of the bending control wire is fixed on the fixing ring, and a through hole is formed in the fixing ring.

Optionally, hydrophilic coatings are provided on the outer side walls of the filling tube and the balloon.

The technical scheme of the utility model has the following advantages:

1. according to the pre-widening balloon, the bending control wire in the filling tube is moved through the bending control belt, and the second filling part and the second wire guide part are soft tubes, so that the second filling part and the second wire guide part are pushed to bend when the bending control wire moves to one side of the balloon, the balloon can easily change direction and smoothly pass through the aortic arch crossing part and the like, the inner wall of a blood vessel is not easy to puncture, and meanwhile, the first filling part and the first wire guide part are hard tubes, and the movement of the balloon in the blood vessel can be more smoothly pushed, so that the pre-widening balloon can have trafficability and bending property and the safety in an operation is improved.

2. The pre-widening saccule provided by the utility model realizes the purpose of driving the bending control wire to move by using a mode of driving the sliding block to move by rotating the bending control ring, has a compact and simple structure, is convenient for the operation of a user, has self-locking property in a mode of connecting the sliding block with the bending control ring in a threaded manner, keeps the state of the bending control wire stationary on the premise of not operating the bending control ring, and has better control effect.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram showing the structure of a pre-dilation balloon;

FIG. 2 is a cross-sectional view showing the internal structure of a pre-dilation balloon;

FIG. 3 is a schematic view showing the structure of the balloon after bending;

FIG. 4 is a partial cross-sectional view showing a specific connection structure of a bending control ring and a bending control wire;

FIG. 5 is a partial cross-sectional view showing the connection of the control ring to the mounting groove;

fig. 6 is a cross-sectional view showing the structure of the fixing ring and the connection relationship between the bending control wire and the fixing ring.

Reference numerals illustrate:

1. a handle; 2. a balloon; 3. controlling bending wires; 4. a bending control ring; 5. a first filling section; 6. a second filling section; 7. a filling inlet; 8. a first guide wire portion; 9. a second guide wire portion; 10. a guidewire inlet; 11. a puncture head; 12. a guidewire outlet; 13. a mounting groove; 14. a slide block; 15. a chute; 16. rotating the sealing ring; 17. a fixing ring; 18. and a through hole.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

The embodiment discloses a pre-expansion balloon, referring to fig. 1, it includes handle 1, filling pipe, balloon 2, wire guide pipe, accuse curved silk 3 and accuse curved operating portion, and filling pipe is connected between handle 1 and balloon 2, and wire guide pipe wears to establish in filling intraductal.

Referring to fig. 1 and 2, the filling pipe includes a first filling portion 5 and a second filling portion 6, the first filling portion 5 is a hard pipe, one end of the first filling portion 5 is connected to the handle 1, the second filling portion 6 is a soft pipe, one end of the second filling portion 6 is connected and fixed with one end of the first filling portion 5 away from the handle 1, and one end of the second filling portion 6 away from the first filling portion 5 is connected and fixed with the balloon 2. Be equipped with filling entry 7 on handle 1, filling entry 7 and first filling portion 5 intercommunication, filling entry 7 communicate with sacculus 2 through filling pipe, and the inside injection filling liquid of accessible filling entry 7 makes sacculus 2 inflation expand to sacculus 2.

Referring to fig. 1 and 2, the guide wire tube includes a first guide wire portion 8 and a second guide wire portion 9, the first guide wire portion 8 is a hard tube, the first guide wire portion 8 is correspondingly threaded in the first filling portion 5, and one end of the first guide wire portion 8 is connected with the handle 1 and forms a guide wire inlet 10 on the handle 1. The second guide wire part 9 is a soft tube, the second guide wire part 9 is correspondingly penetrated in the second filling part 6, one end of the second guide wire part 9 is fixedly connected with one end of the first guide wire part 8 far away from the handle 1, one end of the second guide wire part 9 far away from the first guide wire part 8 penetrates through the balloon 2 to extend to the outer side of the balloon 2, a puncture head 11 is arranged at the end of the second guide wire part 9 penetrating through the balloon 2, and a guide wire outlet 12 is formed in the puncture head 11.

Referring to fig. 2, a bending control wire 3 is arranged between the filling tube and the wire guide tube in a penetrating manner, the bending control wire 3 extends along the axial direction of the filling tube, one end of the bending control wire 3 is connected to the inner wall of one side, close to the balloon 2, of the second filling portion 6, a bending control operation portion is connected to the other end of the bending control wire 3, and the bending control operation portion is located outside the handle 1 and used for driving the bending control wire 3 to move along the axial direction of the bending control wire 3 in the filling tube.

And in combination with fig. 3, because the filling hard tube is a hard tube, the filling soft tube has better hardness under the limitation of the bending control wire 3, the whole trafficability of the pre-expanded balloon can be guaranteed to be better, when the balloon 2 needs to pass through the aortic arch, the bending control wire 3 can be pulled to move by using the bending control operation part, the bending control wire 3 moves to one side of the balloon 2, and because of the distance limitation, the filling soft tube cannot move along the axial direction of the self, so that the filling soft tube can be driven to bend, the movement direction of the balloon 2 is changed, and the second guide wire part 9 can bend along with the bending of the balloon, so that the balloon 2 can more easily pass through the aortic arch.

Referring to fig. 4, in this embodiment, the handle 1 is a cylindrical structure with a cavity inside, the axis of the handle 1 coincides with the axis of the filling pipe, one end of the handle 1, which is close to the filling pipe, is in an opening shape, the filling inlet 7 is fixedly connected to the outer side wall of the handle 1, the filling inlet 7 is arranged along the radial direction of the handle 1, and the filling inlet 7 is communicated with the inside of the handle 1. The end of the first filling part 5 is arranged in the opening end of the handle 1 in a penetrating way and is fixedly connected with the handle 1, so that the filling inlet 7 is communicated with the filling pipe through the cavity in the handle 1. The end of the first guide wire part 8 extends into the handle 1 through the opening of the first filling part 5 and extends to the outer side of the handle 1 through the handle 1, so that a guide wire inlet 10 is formed at one axial side of the handle 1, and filling liquid cannot enter the guide wire tube.

As an alternative embodiment, the handle 1 may be tapered, rectangular or irregularly shaped, and may be configured to be adapted to the hand holding state of the operator, so that the operator may hold the handle with his or her hand more comfortably and stably.

As an alternative embodiment, the filling inlet 7 may also be provided at one axial end of the handle 1, and the filling inlet 7 may be provided extending axially along the handle 1, as long as it is connectable with a filling liquid line.

As an alternative embodiment, the handle 1 may also be solid, the end of the filling tube being fixed to the handle 1, the filling inlet 7 being directly connected to the filling tube, the guide wire tube likewise being formed through the handle 1 into a guide wire inlet 10, so that the interior cavity of the guide wire tube and the interior cavity of the filling tube interfere complementarily.

Referring to fig. 4 and 5, in the present embodiment, the bending control operation portion includes a bending control ring 4, an annular mounting groove 13 is formed on the outer side wall of the handle 1, and the bending control ring 4 is rotatably sleeved in the mounting groove 13. The handle 1 is internally provided with a sliding block 14, the mounting groove 13 is provided with a sliding groove 15 axially arranged along the filling pipe, the sliding groove 15 is communicated with the mounting groove 13 and the handle 1, one end of the sliding block 14 is slidably embedded in the sliding groove 15, and the other end of the sliding block is slidably abutted to the outer wall of the guide wire pipe. The end part of the sliding block 14 positioned in the mounting groove 13 and the inner wall of the position of the control bending ring 4 corresponding to the sliding groove 15 are provided with threads, and the sliding block 14 is in threaded connection with the control bending ring 4. Therefore, the slider 14 can be driven to slide in the handle 1 along the axial direction of the filling pipe by rotating the bending control ring 4, the end part of the bending control wire 3 is fixed on the slider 14, and the bending control wire 3 is driven to move by the movement of the slider 14.

Referring to fig. 4 and 5, in order to make the filling liquid not easily flow out from the gap between the control bending ring 4 and the handle 1, to ensure the expansion pressure of one side of the balloon 2, two rotating sealing rings 16 are further arranged between the control bending ring 4 and the inner wall of the mounting groove 13, the two rotating sealing rings 16 are arranged at intervals, the sliding groove 15 is positioned between the two sealing rings, and under the action of the two rotating sealing rings 16, the control bending ring 4 can effectively rotate and also has good sealing effect, so that the filling liquid is not easily oozed.

As an alternative embodiment, the bending control operation part may also be configured to extend the end of the bending control wire 3 away from the balloon 2 through the handle 1 to the outside of the handle 1, and the end of the bending control wire 3 on the outside of the handle may also be pulled to achieve the purpose of driving the second filling part 6 and the second wire guiding part 9 to bend.

Further, as shown in fig. 2 and 6, a fixing ring 17 is further arranged between the second filling portion 6 and the end portion, close to the balloon 2, of the second guide wire portion 9, the fixing ring 17 connects the end portions, close to the balloon 2, of the second filling portion 6 and the second guide wire portion 9 together, a plurality of through holes 18 are formed in the fixing ring 17, filling liquid can flow into the balloon 2 through the through holes 18, and one end of the bending control wire 3 is connected to the fixing ring 17.

The fixed ring 17 strengthens the structural strength of the second guide wire part 9 and the second filling part 6 near one side of the balloon 2, the bending control wire 3 can drive the second guide wire part 9 and the second filling part 6 to synchronously move and bend simultaneously through the fixed ring 17, so that the bending action of the second guide wire part 9 and the second filling part 6 is smoother, the cavity shape between the second filling part 6 and the second guide wire part 9 is ensured, and filling liquid can smoothly flow in the bent second filling part 6.

In this embodiment, the through holes 18 on the fixing ring 17 are circular, the through holes 18 are distributed on the fixing ring 17 in a circular array, and one end of the bending control wire 3 is fixed at a position between two adjacent through holes 18.

As an alternative embodiment, the through holes 18 may be rectangular or polygonal, and only one through hole 18 may be formed, and the distribution of the through holes 18 may be uniform or nonuniform, so that the bending control wire 3 is ensured to be parallel to the axis of the guide wire tube after being fixed on the fixing ring 17.

As an alternative embodiment, the bending control wire 3 may be directly connected and fixed to the outer wall of the second filling portion 6, or may be directly connected and fixed to the outer wall of the second guide wire portion 9, so that both the bending of the second filling portion 6 and the bending of the second guide wire portion 9 may be controlled.

In addition, hydrophilic coatings are attached to the outer walls of the filling tube and the balloon 2, so that the balloon 2 and the filling tube can move in the blood vessel more smoothly, and discomfort after the filling tube and the balloon 2 enter the patient is reduced.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims

1. A pre-dilation balloon, comprising:

a handle (1) provided with a filling inlet (7) and a guide wire inlet (10);

the filling pipe comprises a first filling part (5) and a second filling part (6), wherein the first filling part (5) is a hard pipe, the second filling part (6) is a soft pipe, one end of the first filling part (5) is connected to the handle (1) and communicated with the filling inlet (7), and the second filling part (6) is connected to one end of the first filling part (5) far away from the handle (1);

a balloon (2) connected to one end of the second filling part (6) away from the first filling part (5);

the guide wire tube is arranged in the filling tube in a penetrating mode, the outer diameter of the guide wire tube is smaller than the inner diameter of the filling tube, the guide wire tube comprises a first guide wire part (8) and a second guide wire part (9), the first guide wire part (8) is a hard tube and is correspondingly positioned at the inner side of the first filling part (5), one end of the first guide wire part (8) is connected to the handle (1) and is communicated with the guide wire inlet (10), the second guide wire part (9) is a soft tube and is correspondingly positioned at the inner side of the second filling part (6), the second guide wire part (9) is connected to one end, far away from the guide wire inlet (10), of the first guide wire part (8), one end, far away from the first guide wire part (8), of the second guide wire part (9) penetrates through the balloon (2) and is provided with a puncture head (11), and the puncture head (11) is provided with a guide wire outlet (12);

the bending control wire (3) is arranged in the filling pipe and is positioned at the outer side of the guide wire pipe, the bending control wire (3) is parallel to the axis of the filling pipe, and one end of the bending control wire (3) is fixedly connected with one side, close to the balloon (2), of the inner wall of the second filling part (6) and/or the outer wall of the second guide wire part (9);

the bending control operation part is arranged at the other end of the bending control wire (3), is positioned outside the handle (1) and is used for driving the bending control wire (3) to axially move in the filling pipe.

2. The pre-dilation balloon according to claim 1, wherein the bend-controlling operation portion comprises a bend-controlling ring (4), the bend-controlling ring (4) being circumferentially connected outside the handle (1).

3. The pre-dilation balloon according to claim 2, wherein the handle (1) is internally provided with a cavity, the first filling portion (5) is communicated with the interior of the handle (1), the filling inlet (7) is communicated with the first filling portion (5) through the cavity in the interior of the handle (1), and the guide wire inlet (10) penetrates through the interior of the handle (1) and is connected with the first guide wire portion (8).

4. The pre-expansion balloon according to claim 3, wherein the bending control ring (4) is rotatably sleeved on the handle (1), a sliding block (14) is arranged on the inner side of the handle (1), the bending control wire (3) is fixed on the sliding block (14), a sliding groove (15) along the axial direction of the bending control wire (3) is formed in the position, corresponding to the bending control ring (4), of the handle (1), the sliding block (14) is slidably embedded in the sliding groove (15), and the sliding block (14) is in threaded connection with the inner wall of the bending control ring (4).

5. The pre-expansion balloon according to claim 4, wherein an annular mounting groove (13) is formed in the outer portion of the handle (1), the bending control ring (4) is rotatably sleeved in the mounting groove (13), and the sliding groove (15) is communicated with the mounting groove (13).

6. Pre-dilation balloon according to claim 4, characterized in that two spaced rotary sealing rings (16) are provided between the control ring (4) and the handle (1), the runner (15) being located between the two rotary sealing rings (16).

7. The pre-dilation balloon according to claim 1, further comprising a fixing ring (17), wherein the fixing ring (17) is fixed inside one side of the second filling part (6) close to the balloon (2), the second guide wire part (9) is penetrated and fixed inside the fixing ring (17), one end of the bending control wire (3) is fixed on the fixing ring (17), and a through hole (18) is formed in the fixing ring (17).

8. Pre-dilation balloon according to any one of claims 1-7, characterized in that the filling tube and the outer side wall of the balloon (2) are provided with a hydrophilic coating.