CN215537700U

CN215537700U - Balloon catheter device for steering guide wire in blood vessel

Info

Publication number: CN215537700U
Application number: CN202122120636.8U
Authority: CN
Inventors: 赵鹏
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-01-18
Anticipated expiration: 2031-09-03

Abstract

The utility model discloses a balloon catheter device for steering a guide wire in a blood vessel, which comprises a sheath tube, an expansion tube, the guide wire and a balloon steering catheter, wherein the balloon steering catheter comprises a balloon inflation seat, a balloon inflation tube, a double-layer catheter and a balloon, the balloon inflation seat is arranged at one end of the double-layer catheter, the balloon is arranged at the other end of the double-layer catheter, the double-layer catheter is hollow inside, a catheter inflation cavity is arranged between the walls of the double-layer catheter, the hollow part inside the balloon is communicated with the hollow part inside the double-layer catheter, a balloon inflation cavity is arranged between the walls of the double-layer catheter, the balloon inflation cavity is communicated with the catheter inflation cavity, an inflation seat cavity is also arranged in the balloon inflation seat, the inflation seat cavity is communicated with the catheter inflation cavity, and the inflation seat cavity is also connected with the balloon inflation tube. The utility model can help the guide wire to turn in the blood vessel, has no harm to the blood vessel, and has simple structure and low cost.

Description

Balloon catheter device for steering guide wire in blood vessel

Technical Field

The utility model relates to the technical field of blood vessel puncture devices, in particular to a balloon catheter device for steering a guide wire in a blood vessel.

Background

The catheter sheath is also called sheath tube, and mainly aims to establish a channel and guide a catheter, a balloon catheter or other intravascular devices to smoothly enter a blood vessel. The sheath tube consists of an outer sheath, a dilator and a short guide wire.

The sheath is divided into four types, namely a common sheath, a leakage-proof sheath (Check-Flo sheath), a peeling catheter insertion sheath (tearable sheath) and a long sheath. The sheath tube is provided with a side edge communication interface, and can be used for blood sample extraction, pressure monitoring and injection of a blood vessel expansion medicament or a contrast medium in the operation. These catheter sheaths are all sold in a nested form. The puncture needle, the guide wire, the expansion tube, the injector and the blade with corresponding sizes are arranged in the suit according to the sizes.

After the arterial or venous puncture is identified, an appropriate sheath is first selected and the lumen is flushed. When the operation is started, the switch of the sheath side arm is closed. The dilator base needs to be locked to prevent the dilator from withdrawing when the sheath tube enters. After the sheath tube enters, a matched guide wire can be inserted to ensure the entry of the sheath tube and serve as a track for other instruments to enter.

However, after the puncture is performed by adopting the current sheath tube, the direction of the inserted guide wire is fixed, the guide wire cannot be turned in the blood vessel, and when the direction needs to be changed, the puncture is often changed to puncture again, so that the use is very inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a balloon catheter device for steering a guide wire in a blood vessel, which can help the guide wire to steer in the blood vessel, has no harm to the blood vessel, and has simple structure and low cost.

In order to achieve the purpose, the utility model provides the following technical scheme: a sacculus pipe device for guiding wire to turn in blood vessel comprises a sheath pipe, an expansion pipe, a guiding wire and a sacculus turning pipe, wherein the sheath pipe is of a hollow tubular structure, the interior of the expansion pipe is hollow, the sacculus turning pipe comprises a sacculus inflating seat, a sacculus inflating pipe, a double-layer pipe and a sacculus, the sacculus inflating seat is arranged at one end of the double-layer pipe, the sacculus is arranged at the other end of the double-layer pipe, the interior of the double-layer pipe is hollow, the outer side of the double-layer pipe is of a double-layer pipe wall structure, a pipe inflating cavity is arranged between the double-layer pipe walls, the hollow part inside the sacculus is communicated with the hollow part inside the double-layer pipe, the outer side of the sacculus is of the double-layer pipe wall structure, the sacculus inflating cavity is communicated with the pipe inflating cavity, the hollow part inside the sacculus inflating seat is communicated with the hollow part inside the double-layer pipe, still be equipped with in the sacculus inflating seat and aerify the seat chamber, aerify the seat chamber and aerify the chamber intercommunication with the pipe, aerify the seat chamber and still be connected with sacculus gas tube, the seal wire penetrates the sacculus inflating seat, double-deck pipe, the hollow position of sacculus.

Preferably, the inflatable seat cavity is also connected with the injector through a balloon inflation tube, and the balloon inflation cavity is inflated by the injector.

Preferably, a locking valve is arranged between the injector and the balloon inflation tube.

Preferably, the balloon is in the shape of a lantern when inflated and fully expanded.

Preferably, the distal outlet of the balloon steering catheter is recessed within the profile of the balloon after the balloon is fully expanded.

Preferably, the tail part of the sheath tube is also provided with a hemostatic valve.

Preferably, a marker point is arranged at a position of the double-layer catheter close to the balloon inflation seat for a certain distance.

Preferably, the sheath tube, the dilating tube and the balloon steering catheter are flexible tubes.

Preferably, the dilating tube is longer than the sheath.

Preferably, the balloon steering catheter is longer than the sheath.

Compared with the prior art, the utility model has the beneficial effects that:

1. the balloon catheter device for steering the guide wire in the blood vessel can help the guide wire to steer in the blood vessel, has no harm to the blood vessel, and has simple structure and low cost.

2. The balloon catheter device for steering the guide wire in the blood vessel has the advantages that the sheath tube and the expansion tube can be of universal models on the market, and the balloon steering catheter can be matched with other puncture devices for use, so that the balloon catheter device is very wide in application.

3. The balloon catheter device for steering the guide wire in the blood vessel can accurately position the puncture point and the puncture direction, improve the success rate of the operation and reduce the possibility of puncture-related complications.

4. In order to avoid over-deep insertion, the double-layer catheter is provided with a marking point at a position close to the balloon inflation seat for a certain distance.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a structural view of the stent of the present invention;

FIG. 2 is a structural view of a sheath of the present invention;

FIG. 3 is a block diagram of the unexpanded balloon steering catheter of the present invention;

FIG. 4 is a cross-sectional view of the balloon steering catheter of the present invention in an unexpanded state;

FIG. 5 is an enlarged view of a portion of FIG. 3;

FIG. 6 is a block diagram of the balloon steering catheter of the present invention during dilation;

FIG. 7 is a cross-sectional view of the balloon steering catheter of the present invention as it is expanded;

FIG. 8 is an enlarged view of a portion of FIG. 6;

FIG. 9 is a schematic view of the present invention showing a built-in guidewire after successful puncture;

FIG. 10 is a view showing a state in which the dilating tube and the sheath of the present invention are used;

FIG. 11 is a view showing the state of an indwelling sheath according to the present invention;

FIG. 12 is a state view of the delivery balloon steering catheter of the present invention;

FIG. 13 is a view showing the state of the indwelling balloon catheter of the present invention;

FIG. 14 is a schematic representation of the balloon of the present invention expanded after inflation;

FIG. 15 is a schematic view of a pull-out balloon occlusion puncture site of the present invention;

FIG. 16 is a schematic representation of the guidewire of the present invention after steering;

in the figure: 1. an expansion tube; 2. a sheath tube; 3. a balloon steering catheter; 301. a balloon inflation seat; 302. a balloon inflation tube; 303. a double-layer conduit; 304. a balloon; 305. a catheter inflation lumen; 306. a balloon inflation lumen; 307. a double layer conduit inner channel; 308. an inflatable seat cavity; 4. a latch valve; 5. an injector; 6. a guide wire; 7. a blood vessel;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The utility model provides a technical scheme that: a balloon catheter device for steering a guide wire in a blood vessel comprises a sheath tube 2, an expansion tube 1, a guide wire 6 and a balloon steering catheter 3.

As shown in figure 1, the dilating tube 1 is hollow and matched with the sheath 2 for use, the dilating tube and the sheath can be tightly assembled, and a guide wire can pass through the inner cavity.

As shown in fig. 2, the sheath tube 2 is a short, thin-walled, hollow tubular structure. The tail part of the sheath tube 2 is also provided with a hemostatic valve.

As shown in fig. 3-8, the balloon turning catheter 3 comprises a balloon inflating seat 301, a balloon inflating tube 302, a double-layer catheter 303 and a balloon 304, wherein the balloon inflating seat 301 is arranged at one end of the double-layer catheter 303, the balloon 304 is arranged at the other end of the double-layer catheter 303, the double-layer catheter 303 is hollow inside, the outer side of the double-layer catheter 303 is of a double-layer catheter wall structure, a catheter inflating cavity 305 is arranged between the double-layer catheter walls, the hollow part inside the balloon 304 is communicated with the hollow part inside the double-layer catheter 303, the outer side of the balloon 304 is of a double-layer balloon wall structure, a balloon inflating cavity 306 is arranged between the double-layer catheter walls, the balloon inflating cavity 306 is communicated with the catheter inflating cavity 305, the hollow part inside the balloon inflating seat 301 is communicated with the hollow part inside the double-layer catheter 303, an inflating seat cavity 308 is further arranged inside the balloon inflating seat 301, the inflating cavity 308 is communicated with the catheter inflating cavity 305, and the inflating seat cavity 308 is further connected with the balloon inflating tube 302, the guide wire 6 penetrates into the hollow parts of the balloon inflating seat 301, the double-layer catheter 303 and the balloon 304.

In another embodiment of the present invention, the present invention further comprises an injector 5, the inflation socket cavity 308 is further connected with the injector 5 through the balloon inflation tube 302, the balloon inflation cavity 306 is inflated by the injector 5, and the injector 5 is a screw injector. A locking valve 4 is arranged between the injector 5 and the balloon inflation tube 302.

In another embodiment of the utility model, balloon 304 is shaped like a lantern when inflated and fully expanded. After the balloon 304 is completely expanded, the outlet at the distal end of the balloon steering catheter 3 is sunken in the contour of the balloon 304, so that the injury to the vessel wall during steering is avoided.

In another embodiment of the present invention, to avoid inserting too deeply, the double-layer catheter 303 is provided with a marker point at a distance close to the balloon inflation seat 301.

In another embodiment of the utility model, the sheath tube 2, the dilating tube 1 and the balloon steering catheter 3 are flexible tubes for convenient indwelling. The dilating tube 1 is longer than the sheath 2. The balloon steering catheter 3 is longer than the sheath 2.

As shown in fig. 9-16, the operation steps are as follows:

1. after successful puncture, a guide wire is placed in the target blood vessel 7, the head end of the guide wire points to the proximal heart or distal heart direction (when performing cardiac surgery blood vessel puncture), and the tail end is positioned outside the body, as shown in fig. 9-10;

2. the sheath tube 2 and the expansion tube 1 are sent into the blood vessel along the tail end of the guide wire, the expansion tube 1 is pulled out, and the sheath tube 2 is left as shown in figure 11;

3. the balloon steering catheter 3 is sent into the tail part of the sheath tube 2 through the sheath tube 2 along the guide wire until the mark point reaches the tail part of the sheath tube 2, as shown in figure 12;

4. the injector is connected with the inflation port of the balloon inflation tube 302, after 1ml of inflation, the locking valve 4 is started, at this time, the balloon is positioned in the blood vessel and is in an expanded state, and the whole set of system is in the same direction with the head end of the guide wire, as shown in fig. 13;

5. the guide wire 6, the sheath tube 2 and the balloon steering catheter 3 are all pulled outwards until the guide wire can not be withdrawn any more, and at the moment, the expanded balloon is positioned in the blood vessel to seal the puncture point, as shown in fig. 14;

6. the balloon steering catheter 3 is kept in an outward pulling state, the guide wires are withdrawn until the mark points are exposed out of the tail part of the balloon, at the moment, the guide wires are all positioned in the inner cavity of the balloon steering catheter 3, and only the expanded balloon is left in the blood vessel, as shown in fig. 15;

7. the tail of the balloon steering catheter 3 is kept pulled outwards and steered to the direction of the original wire guide head end, at the moment, the head end of the balloon is steered to the opposite direction, the guide wire and the balloon steering catheter 3 are fed forwards, and then the guide wire steering can be completed, as shown in fig. 16.

In the description of the present invention, it is to be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience in describing the present invention and simplifying the description, but are not intended to indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A balloon catheter device for steering a guide wire in a blood vessel comprises a sheath tube, an expansion tube and a guide wire, and is characterized in that: the balloon steering catheter comprises a balloon inflating seat, a balloon inflating tube, a double-layer catheter and a balloon, wherein the balloon inflating seat is arranged at one end of the double-layer catheter, the balloon is arranged at the other end of the double-layer catheter, the inside of the double-layer catheter is hollow, the outer side of the double-layer catheter is of a double-layer catheter wall structure, a catheter inflating cavity is arranged between the double-layer catheter walls, the inner hollow part of the balloon is communicated with the inner hollow part of the double-layer catheter, the outer side of the balloon is of a double-layer balloon wall structure, a balloon inflating cavity is arranged between the double-layer catheter walls and is communicated with the catheter inflating cavity, the inner hollow part of the balloon inflating seat is communicated with the inner hollow part of the double-layer catheter, an inflating seat cavity is further arranged in the balloon inflating seat and is communicated with the catheter inflating cavity, the inflatable seat cavity is also connected with a balloon inflation tube, and the guide wire penetrates into the balloon inflatable seat, the double-layer catheter and the hollow part of the balloon.

2. A balloon catheter device for intravascular steering of a guidewire as defined in claim 1, wherein: the inflatable seat cavity is also connected with the injector through a balloon inflation tube, and the balloon inflation cavity is inflated by the injector.

3. A balloon catheter device for intravascular steering of a guidewire as defined in claim 2, wherein: a locking valve is arranged between the injector and the balloon inflation tube.

4. A balloon catheter device for intravascular steering of a guidewire as defined in claim 1, wherein: the balloon is inflated and fully expanded to form a lantern shape.

5. A balloon catheter device for intravascular steering of a guidewire as defined in claim 1, wherein: after the balloon is fully expanded, the distal outlet of the balloon steering catheter is invaginated within the balloon profile.

6. A balloon catheter device for intravascular steering of a guidewire as defined in claim 1, wherein: the tail part of the sheath tube is also provided with a hemostatic valve.

7. A balloon catheter device for intravascular steering of a guidewire as defined in claim 1, wherein: and a mark point is arranged at the position of the double-layer catheter close to the balloon inflation seat for a certain distance.

8. A balloon catheter device for intravascular steering of a guidewire as defined in claim 1, wherein: the sheath tube, the expansion tube and the balloon steering catheter are flexible tubes.

9. A balloon catheter device for intravascular steering of a guidewire as defined in claim 1, wherein: the dilation tube is longer than the sheath tube.

10. A balloon catheter device for intravascular steering of a guidewire as defined in claim 1, wherein: the balloon steering catheter is longer than the sheath.