CN210750823U

CN210750823U - Balloon catheter

Info

Publication number: CN210750823U
Application number: CN201920859132.8U
Authority: CN
Inventors: 肖家华; 刘玥
Original assignee: Shanqian Zhuhai Medical Technology Co ltd
Current assignee: Shanqian Zhuhai Medical Technology Co ltd
Priority date: 2019-06-06
Filing date: 2019-06-06
Publication date: 2020-06-16
Anticipated expiration: 2029-06-06

Abstract

The utility model provides a sacculus pipe, the sacculus body on the pipe is located to pipe and cover, and the sacculus body includes inlayer sacculus and outer sacculus, and on inlayer sacculus and the equal direct cladding of outer sacculus were fixed in the pipe, and the inlayer sacculus was located the inside of outer sacculus, was formed with medium channel between inlayer sacculus and the outer sacculus, offered the outer medium inflow hole and the medium backward flow hole that are linked together with medium channel on the pipe. The utility model provides a sacculus pipe, through setting up the double-deck sacculus body, make the medium flow in the medium passage between inlayer sacculus and outer sacculus, make the medium flow in to the medium passage in through outer medium inlet hole, the medium of rethread medium backward flow hole in with the medium passage flows, thereby realize the circulation, can let more medium carry out heat exchange and velocity of flow distribution relatively evenly at outer sacculus internal surface, increase the flow quality of medium on sacculus body surface, improve heat exchange efficiency.

Description

Balloon catheter

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to sacculus pipe.

Background

The saccule conduit is a terminal apparatus for interventional therapy operation, and is mainly applied to angioplasty, cardiovascular treatment, stent delivery, lumen dilatation, trachea and esophagus dilatation and treatment, high-pressure dilatation, nerve vessel occlusion and other treatments.

In the balloon catheter in the prior art, in a pressurized state, a medium enters a balloon cavity from an inlet through the catheter and flows back through an outlet to complete circulation. The position of the medium inlet in the balloon influences the flow velocity distribution of the medium on the inner surface of the balloon. Due to the flowing characteristic of the medium, when the medium is contacted with the inner surface of the saccule for heat exchange, the effective heat exchange medium is relatively less, so that the heat exchange is incomplete, and a better treatment effect cannot be achieved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sacculus pipe to solve the heat exchange incomplete technical problem of the heat transfer medium who exists among the prior art.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a sacculus pipe, locate including pipe and cover sacculus body on the pipe, the sacculus body includes inlayer sacculus and outer sacculus, inlayer sacculus with outer sacculus all direct cladding is fixed in on the pipe, just the inlayer sacculus is located the inside of outer sacculus, inlayer sacculus with be formed with the medium passageway between the outer sacculus, set up on the pipe with outer medium inflow hole and the medium backward flow hole that the medium passageway is linked together.

Furthermore, the catheter is also provided with an inner layer medium inflow hole communicated with the inner layer balloon.

Furthermore, a medium inflow pipe and a medium return pipe are arranged in the guide pipe, the inner layer medium inflow hole and the outer layer medium inflow hole are both communicated with the medium inflow pipe, and the medium return pipe is communicated with the medium return hole.

Further, a control valve is arranged on the medium inflow pipe and is positioned between the inner medium inflow hole and the outer medium inflow hole.

Furthermore, a medium inflow pipe, a medium backflow pipe and an inner medium pipe are arranged in the guide pipe, the inner medium inflow hole is communicated with the inner medium pipe, the outer medium inflow hole is communicated with the medium inflow pipe, and the medium backflow pipe is communicated with the medium backflow hole.

Further, one end of the medium inflow pipe is a catheter tail end, the outer layer medium inflow hole is located at one end, far away from the catheter tail end, of the outer layer balloon, and the inner layer medium inflow hole is located on one side, close to the catheter tail end, of the outer layer medium inflow hole.

Further, the medium backflow hole is located at one end of the outer balloon close to the tail end of the catheter.

Furthermore, a guide wire cavity is also arranged in the guide pipe.

Further, the wire chamber with pipe sliding connection, just the wire chamber is kept away from the terminal one end of pipe with outer sacculus is kept away from the terminal one end fixed connection of pipe.

Further, a calibration ring is arranged inside the inner layer balloon or the outer layer balloon.

The utility model provides a sacculus pipe's beneficial effect lies in: compared with the prior art, the utility model discloses a sacculus pipe, through setting up the double-deck sacculus body for the medium can flow in the medium passage between inlayer sacculus and outer sacculus, make the medium flow in to the medium passage in through outer medium inlet hole, the medium outflow in the medium passage is flowed in the rethread medium backflow hole, thereby realize the circulation, can let more medium carry out heat exchange and velocity of flow distribution relatively evenly at outer sacculus internal surface, increase the flow quality of medium on sacculus body surface, improve heat exchange efficiency.

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 embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a balloon catheter according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating the flow of a medium in a balloon catheter according to an embodiment of the present invention;

fig. 3 is one of schematic cross-sectional structural diagrams of a balloon catheter provided in an embodiment of the present invention.

Fig. 4 is a second schematic cross-sectional view of a balloon catheter according to an embodiment of the present invention.

Description of reference numerals:

1. a conduit; 2. a balloon body; 11. an outer layer medium inflow hole; 12. a media return orifice; 13. an inner layer medium inflow hole; 14. a medium inflow pipe; 15. a medium return pipe; 16. a guidewire lumen; 17. a catheter tip; 141. a control valve; 21. an inner balloon; 22. an outer balloon; 23. a media channel; 24. The ring is calibrated.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. 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 invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

Referring to fig. 1 and 2 together, the balloon catheter provided by the present invention will now be described. The balloon catheter comprises a catheter 1 and a balloon body 2 sleeved on the catheter 1, wherein the balloon body 2 comprises an inner balloon 21 and an outer balloon 22, the inner balloon 21 and the outer balloon 22 are directly fixed on the catheter 1 in a covering manner, the inner balloon 21 is located inside the outer balloon 22, a medium channel 23 is formed between the inner balloon 21 and the outer balloon 22, and an outer medium inflow hole 11 and a medium backflow hole 12 which are communicated with the medium channel 23 are formed in the catheter 1.

The utility model provides a sacculus pipe, compared with the prior art, through setting up the double-deck sacculus body 2, make the medium can flow in the medium passage 23 between inner sacculus 21 and outer sacculus 22, make the medium flow in to medium passage 23 in through outer medium inlet hole 11, the medium outflow in medium passage 23 of rethread medium return-flow hole 12, thereby realize the circulation of medium, can let more medium carry out heat exchange and velocity distribution relatively evenly at outer sacculus 22 internal surface, increase the flow quality of medium at sacculus body 2 surfaces, and the heat exchange efficiency is improved.

Specifically, the balloon body 2 is directly sleeved on the catheter 1, the balloon body 2 is generally arranged at the tail end of the catheter 1, and the balloon body 2 can be inflated under the filling of media, so that narrow places such as blood vessels, trachea, urethra and the like can be filled and supported. The middle parts of the inner layer saccule 21 and the outer layer saccule 22 can be bulged after the medium is filled, the shapes of the inner layer saccule 21 and the outer layer saccule 22 are generally consistent, and the distance between the outer surface of the inner layer saccule 21 and the inner surface of the outer layer saccule 22 is consistent, so that the size of the whole medium channel 23 is consistent, and the flow velocity distribution of the medium is relatively uniform. Of course, according to practical conditions and specific requirements, in other embodiments of the present invention, the shapes of the inner balloon 21 and the outer balloon 22 may not be the same, and are not limited herein.

Further, referring to fig. 1 to 3, as an embodiment of the balloon catheter provided by the present invention, the catheter 1 is further provided with an inner layer medium inlet 13 communicated with the inner layer balloon 21. Specifically, the medium can flow into the inner layer medium through the inner layer medium inflow hole 13, so that the medium can be ensured to fill the inner layer balloon 21, the medium for filling the inner layer balloon 21 and the outer layer balloon 22 is generally the same medium, a through hole is directly formed in the side wall of the catheter 1, and the medium in the catheter 1 can flow into the inner layer balloon 21.

Preferably, the number of the inner medium inflow holes 13, the outer medium inflow holes 11 and the medium backflow holes 12 is multiple and is uniformly distributed on the side wall of the catheter 1, so that the speed of the medium in the catheter 1 flowing into the balloon body 2 can be increased, and the uniformity of the flow rate of the medium in the outer balloon 22 can be ensured.

Further, referring to fig. 1 to 3, as a specific embodiment of the balloon catheter provided by the present invention, a medium inflow pipe 14 and a medium return pipe 15 are disposed in the catheter 1, the inner medium inflow hole 13 and the outer medium inflow hole 11 are both communicated with the medium inflow pipe 14, and the medium return pipe 15 is communicated with the medium return hole 12. Specifically, the medium inflow pipe 14 and the medium return pipe 15 are two separate pipes, the medium inflow pipe 14 and the medium return pipe 15 are both directly communicated with the outer side of the catheter 1, the medium inflow pipe 14 can be directly communicated with the inner layer medium inflow hole 13 and the outer layer medium inflow hole 11, namely, the medium in the inner layer balloon 21 and the medium in the outer layer balloon 22 are both conveyed by the medium inflow pipe 14, and the medium in the outer layer balloon 22 flows out of the medium return hole 12 to the medium return pipe 15 through the medium channel 23, so that circulation of all the media is realized. Of course, according to the actual situation and the specific requirement, in other embodiments of the present invention, the medium inflow pipe 14 may be only communicated with the outer medium inflow hole 11, and the medium required by the inner balloon 21 may be directly conveyed by a separate pipe body, which is not limited herein.

Further, referring to fig. 1 to 3, as a specific embodiment of the balloon catheter provided by the present invention, a control valve 141 is provided on the medium inflow tube 14, and the control valve 141 is located between the inner layer medium inflow hole 13 and the outer layer medium inflow hole 11. Specifically, the control valve 141 can control the flow direction of the medium, and ensure that the medium preferentially flows into the inner balloon 21 from the medium inflow tube 14, and then when the pressure in the inner balloon 21 is greater than the threshold value, the control valve 141 is opened so that the medium can flow into the outer medium inflow hole 11, so that the outer balloon 22 is filled, and the problem that the medium directly enters the outer balloon 22 to circulate and cannot fill the inner balloon 21 can be avoided.

Further, referring to fig. 1 to 3, as an embodiment of the balloon catheter provided by the present invention, the control valve 141 is a one-way throttle valve. Specifically, the throttle valve and the check valve are connected in parallel to form the check throttle valve. The choke valve can be opened under the effect of pressure, and the choke valve is one-way, and the medium can only flow into to outer medium inflow hole 11 after inner medium inflow hole 13, can avoid the backward flow phenomenon of medium effectively, can guarantee the stability that this sacculus pipe used through one-way choke valve to guarantee that the medium can fill inlayer sacculus 21 earlier, then just can fill outer sacculus 22, avoided the medium to directly realize the phenomenon of backward flow in outer sacculus 22.

Further, referring to fig. 1 to 3, as one embodiment of the balloon catheter provided by the present invention, the medium inflow tube 14 and the medium return tube 15 are located at opposite sides of the inner side of the catheter 1. Specifically, the medium inflow pipe 14 and the medium return pipe 15 are located on the inner side of the conduit 1, and the medium inflow pipe 14 and the medium return pipe 15 are both located on one side of the conduit close to the side wall, so that the connection between the medium inflow pipe 14 and the medium return pipe 12 and the connection between the medium inflow hole 13 and the medium outflow hole 11 on the inner layer can be conveniently realized, and the connection can be realized by directly forming a through hole on the medium inflow pipe 14 or the medium return pipe 15. Of course, according to the actual situation and the specific requirement, in other embodiments of the present invention, the medium inflow pipe 14 and the medium return pipe 15 may also be directly filled and disposed inside the catheter 1, or the medium inflow pipe 14 and the medium return pipe 15 may be independent pipes with respect to the catheter 1, or all the channels may be designed as a composite multi-channel pipe, which is not limited herein.

Further, referring to fig. 1 to 3, as an embodiment of the balloon catheter provided by the present invention, one end of the medium inflow tube 14 is a catheter tip 17, the outer layer medium inflow hole 11 is located at an end of the outer layer balloon 22 away from the catheter tip 17, and the inner layer medium inflow hole 13 is located at a side of the outer layer medium inflow hole 11 close to the catheter tip 17. Specifically, one end of the catheter 1 is a catheter tip 17, and the catheter tip 17 may be an inflow end of a medium or an insertion end of a guide wire. The inner medium inflow hole 13 is located near the catheter end 17, i.e. the medium will fill the outer balloon 22 after filling the inner balloon 21 first, so as to avoid the medium flowing into the outer balloon 22 completely and flowing out from the medium return hole 12, thereby ensuring that both the inner layer and the outer layer of the balloon body 2 can be filled. Of course, according to actual conditions and specific requirements, in other embodiments of the present invention, when the inner medium pipe is separately disposed, the positions of the inner medium inflow hole 13 and the outer medium inflow hole 11 can be adjusted as required, and the only limitation is not made here.

Further, referring to fig. 1 to 3, as an embodiment of the balloon catheter provided by the present invention, the medium return hole 12 is located at one end of the outer balloon 22 close to the catheter end 17. Specifically, medium backward flow hole 12 and outer medium inflow hole 11 are located outer sacculus 22's relative both ends respectively to guarantee that the medium can form complete circulation in outer sacculus 22, thereby avoid the medium can not carry out the packing of accomplishing with outer sacculus 22, avoid appearing outer sacculus 22 and can not expand completely and lead to supporting and the not good condition of fixed effect. Of course, according to actual conditions and specific requirements, in the other embodiments of the present invention, the medium backflow hole 12 may be further provided with a throttle valve, when the pressure in the outer balloon 22 is greater than a certain degree, the medium can flow back through the medium backflow hole 12, and there is no unique limitation here.

Further, referring to fig. 1 to 3, as a specific embodiment of the balloon catheter provided by the present invention, a guide wire cavity 16 is further provided in the catheter 1. Specifically, the guide wire lumen 16 has auxiliary functions such as passing a guide wire, introducing a liquid, etc., the guide wire lumen 16 is generally located at the middle portion of the catheter 1, the medium inflow tube 14 and the medium return tube 15 are located at both sides of the guide wire lumen 16, and a space of the guide wire lumen 16 is left in the catheter 1, thereby enabling to increase the applicability of the balloon catheter and to increase the function of the balloon catheter.

Further, please refer to fig. 3 and 4, as a specific embodiment of the balloon catheter provided by the present invention, the guide wire chamber 16 is slidably connected to the catheter 1, and the guide wire chamber 16 is far away from one end of the catheter end 17 and one end of the outer balloon 22 is far away from the catheter end 17 and is fixedly connected to each other. Specifically, the catheter 1 is a long tube, the guide wire cavity 16 is arranged inside the catheter 1, the guide wire cavity 16 can relatively slide inside the catheter 1, one end of the guide wire cavity 16, which is far away from the tail end 17 of the catheter, can be directly and fixedly connected with one end, which is far away from the tail end 17 of the catheter, of the outer balloon 22, one end, which is close to the tail end 17 of the catheter, of the outer balloon 22 is fixedly connected with the catheter 1, so that the change of the distance between the two ends of the outer balloon 22 can be realized, the distance between the two ends of the outer balloon 22 is increased, the outer balloon 22 is stretched to have side length and is attached to the outer side of the catheter 1, and the intervention treatment; the distance between the two ends of the outer balloon 22 is shortened, so that the outer balloon 22 can be inflated, and the supporting effect is achieved.

Further, referring to fig. 3 and 4, as a specific embodiment of the balloon catheter 1 provided by the present invention, a calibration ring 24 is disposed inside the inner balloon 21 or the outer balloon 22. Specifically, mark ring 24 and set up in balloon body 2's inside, it can mark balloon body 2's position, can be convenient follow the outside and observe, mark ring 24 generally sets up the inside of inlayer sacculus 21 or outer sacculus 22, and marks ring 24 and encircle and establish in the outside of pipe 1 to realize the fixed of mark ring 24. The calibration ring 24 is made of platinum-iridium alloy or other alloy materials capable of performing a marking function.

Example 2

As another embodiment of the present invention, please refer to fig. 1 to fig. 3, the difference between the embodiment and the embodiment 1 is: a medium inflow pipe 14, a medium return pipe 15 and an inner medium pipe (not shown) are arranged in the conduit 1, the inner medium inflow hole 13 is communicated with the inner medium pipe, the outer medium inflow hole 11 is communicated with the medium inflow pipe 14, and the medium return pipe 15 is communicated with the medium return hole 12. Specifically, the medium inflow pipe 14, the medium return pipe 15 and the inner medium pipe are all independent pipes, the inner medium inflow hole 13 is communicated with the inner medium pipe, and the inner medium pipe and the medium inflow pipe are two independent pipes, so that the flow is not required to be controlled by the control valve 141, the control method is simpler, and the medium can be directly conveyed to the inner balloon 21 and the outer balloon 22. The medium in the outer balloon 22 flows out from the medium return hole 12 to the medium return pipe 15 through the medium channel 23, thereby realizing the circulation of the whole medium.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A balloon catheter characterized by: locate including pipe (1) and cover balloon body (2) on pipe (1), balloon body (2) include inlayer sacculus (21) and outer sacculus (22), inlayer sacculus (21) with outer sacculus (22) are all direct cladding be fixed in on pipe (1), just inlayer sacculus (21) are located the inside of outer sacculus (22), inlayer sacculus (21) with be formed with medium passageway (23) between outer sacculus (22), set up on pipe (1) with outer medium inflow hole (11) and medium backward flow hole (12) that medium passageway (23) are linked together.

2. The balloon catheter of claim 1, wherein: the catheter (1) is also provided with an inner layer medium inflow hole (13) communicated with the inner layer balloon (21).

3. The balloon catheter of claim 2, wherein: a medium inflow pipe (14) and a medium return pipe (15) are arranged in the guide pipe (1), the inner layer medium inflow hole (13) and the outer layer medium inflow hole (11) are communicated with the medium inflow pipe (14), and the medium return pipe (15) is communicated with the medium return hole (12).

4. The balloon catheter of claim 3, wherein: the medium inflow pipe (14) is provided with a control valve (141), and the control valve (141) is positioned between the inner layer medium inflow hole (13) and the outer layer medium inflow hole (11).

5. The balloon catheter of claim 2, wherein: a medium inflow pipe (14), a medium backflow pipe (15) and an inner layer medium pipe are arranged in the catheter (1), the inner layer medium inflow hole (13) is communicated with the inner layer medium pipe, the outer layer medium inflow hole (11) is communicated with the medium inflow pipe (14), and the medium backflow pipe (15) is communicated with the medium backflow hole (12).

6. The balloon catheter of any one of claims 3 to 5, wherein: one end of the medium inflow pipe (14) is a catheter tail end (17), the outer layer medium inflow hole (11) is located at one end, far away from the catheter tail end (17), of the outer layer balloon (22), and the inner layer medium inflow hole (13) is located on one side, close to the catheter tail end (17), of the outer layer medium inflow hole (11).

7. The balloon catheter of claim 6, wherein: the medium return hole (12) is positioned at one end of the outer balloon (22) close to the catheter end (17).

8. The balloon catheter of claim 6, wherein: a guide wire cavity (16) is also arranged in the catheter (1).

9. The balloon catheter of claim 8, wherein: wire chamber (16) with pipe (1) sliding connection, just wire chamber (16) are kept away from the one end of pipe end (17) with outer sacculus (22) are kept away from the one end fixed connection of pipe end (17).

10. The balloon catheter of claim 1, wherein: and a calibration ring (24) is arranged inside the inner layer balloon (21) or the outer layer balloon (22).