CN217286852U - Balloon guide catheter - Google Patents

Abstract

The utility model discloses a sacculus guide tube, sacculus guide tube includes: pedestal, compound pipe, sacculus and extension pipe, be equipped with main entrance and side opening way on the pedestal, compound pipe includes inner tube and outer tube, the inner tube is located in the outer tube, the inner wall of inner tube is injectd first passageway, the inner wall of outer tube with the second passageway is injectd to the outer wall of inner tube, first passageway with the main entrance intercommunication, the second passageway with side opening way intercommunication, the sacculus is located the outer tube is kept away from the one end of pedestal and with second passageway intercommunication, sacculus guide pipe fills through adjusting the liquid amount of sacculus is in order to adjust the volume of sacculus, the extension pipe is located the inner tube is kept away from the one end of pedestal and with first passageway intercommunication. The balloon guide catheter of the utility model can be used under different patient blood vessel positions, the application range of the balloon guide catheter is enlarged, and the applicability is better.

Description

Balloon guide catheter

Technical Field

The utility model relates to the technical field of medical equipment, specifically, relate to a guiding catheter is led to sacculus.

Background

The interventional technique of cerebrovascular diseases is a representative minimally invasive treatment mode, and with the progress of imaging equipment and the rapid development of novel interventional equipment in recent years, cranial nerve interventional doctors can treat more and more complex pathological changes, more and more cases are applied clinically, and the related disease types are more and more extensive.

In the field of treating ischemic stroke, mechanical thrombus removal becomes a new treatment mode, and the principle of the mechanical thrombus removal is that blood vessels blocking the brain are removed through intravascular interventional therapy and a stent or a catheter, so that the purpose of treatment is achieved. Need when the sacculus guide catheter uses under the monitoring of advanced medical imaging equipment, put into arterial sheath through percutaneous puncture, supplementary thrombectomy apparatus reachs the vascular thrombus near-end, makes its attached in the vascular wall through the sacculus inflation, forms local shutoff to the shutoff blood vessel of temporary nature, but sacculus guide catheter among the correlation technique can only reach the main artery opening position in footpath, and can't further go deep into the blood vessel, consequently can not satisfy the user demand under the different disease positions, and the suitability is relatively poor.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving one of the technical problems in the related art at least to a certain extent.

Therefore, the embodiment of the present invention provides a balloon guiding catheter which can be used in different blood vessel positions of patients and has better applicability.

According to the utility model discloses a sacculus guide pipe, include: the seat body is provided with a main duct and a side duct; the composite pipe comprises an inner pipe and an outer pipe, the inner pipe is arranged in the outer pipe, a first channel is defined by the inner wall of the inner pipe, a second channel is defined by the inner wall of the outer pipe and the outer wall of the inner pipe, the first channel is communicated with the main pore canal, and the second channel is communicated with the side pore canal; the balloon is arranged at one end of the outer tube, which is far away from the seat body, and is communicated with the second channel, and the balloon guide catheter adjusts the volume of the balloon by adjusting the amount of liquid filled into the balloon; the extension pipe is located the inner tube is kept away from the one end of pedestal and with first passageway intercommunication, the extension pipe includes interior lubricant film, metallic braid, elastic layer and outer lubricant film, interior lubricant film metallic braid the elastic layer with outer lubricant film follows the inner wall of extension pipe to arrange the setting in proper order in the direction of the outer wall of extension pipe.

According to the utility model discloses a sacculus guide pipe sets up the extension pipe through the one end of keeping away from the pedestal at the inner tube and makes sacculus guide pipe can go deep into to the patient's blood vessel that the position is far away, has enlarged sacculus guide pipe's application range, and then has improved sacculus guide pipe's suitability to sacculus guide pipe's simple structure, convenient operation. Additionally, the utility model discloses an extension pipe of sacculus guide pipe of embodiment can guarantee the lubricating property of its inner wall and outer wall, can improve the structural strength of extension pipe again, and then makes the result of use of sacculus guide pipe better.

In some embodiments, the resilient layer is at least one of a polyamide layer, a polyetheramide layer, and a polyurethane layer.

In some embodiments, the metal braid is braided from a resilient, shape memory wire.

In some embodiments, the metal braid has braid nodes of 60 or more and 150 or less per inch.

In some embodiments, the inner lubricating layer is at least one of a polytetrafluoroethylene layer and a high density polyethylene layer.

In some embodiments, the outer lubricant layer is a polyvinylpyrrolidone layer.

In some embodiments, the outer diameter of the extension pipe gradually decreases along an end of the extension pipe adjacent to the inner pipe toward a direction away from the end of the extension pipe.

In some embodiments, the extension tube has an outer diameter of 1.5 mm or more and 5 mm or less.

In some embodiments, the extension tube is welded to the inner tube and the outer tube.

In some embodiments, a developer material is disposed within the elastic layer, the developer material being visible under X-rays.

In some embodiments, an end of the extension tube distal from the inner tube is provided with a visualization marker, the visualization marker being visible under X-rays.

Drawings

Fig. 1 is a cross-sectional view of a balloon guide catheter in accordance with an embodiment of the present invention.

Fig. 2 is a schematic view of a-a in fig. 1.

Fig. 3 is a diagram illustrating a usage state of the balloon guide catheter extension tube according to the embodiment of the present invention.

Reference numerals:

1. a base body; 11. a main duct; 12. a side duct;

2. a composite pipe; 21. an inner tube; 22. an outer tube;

3. a balloon;

4. an extension pipe; 41. an inner lubricating layer; 42. a metal braid layer; 43. an elastic layer; 44. an outer lubricant layer;

5. developing the mark;

6. a one-way valve.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

A balloon guide catheter according to an embodiment of the present invention will be described with reference to fig. 1 to 3.

As shown in fig. 1 to 3, a balloon guide catheter according to an embodiment of the present invention includes: the seat body 1, the composite tube 2, the balloon 3 and the extension tube 4. The seat body 1 is provided with a main duct 11 and a side duct 12, and the composite pipe 2 comprises an inner pipe 21 and an outer pipe 22.

As shown in fig. 1, the inner tube 21 is disposed within the outer tube 22, the inner wall of the inner tube 21 defining a first passage, the inner wall of the outer tube 22 and the outer wall of the inner tube 21 defining a second passage, the first passage communicating with the main port 11, and the second passage communicating with the side port 12. The balloon 3 is arranged at one end (such as the lower end of the tube 22 in fig. 1) of the outer tube 22 far away from the seat body 1, and the balloon 3 is communicated with the second channel, so that the balloon 3 can be filled with liquid entering the second channel from the side hole 12, and the balloon 3 is inflated and expanded; the balloon 3 may also expel the liquid inside to deflate the balloon 3, so that the balloon guide catheter adjusts the volume of the balloon 3 by adjusting the amount of liquid filled into the balloon 3. The extension pipe 4 is disposed at an end of the inner pipe 21 away from the seat body 1 (e.g., a lower end of the inner pipe 21 in fig. 1), and the extension pipe 4 is communicated with the first channel.

As shown in fig. 2, the extension pipe 4 includes at least: inner lubricant layer 41, metal braid layer 42, elastic layer 43 and outer lubricant layer 44. Wherein, the inner lubrication layer 41, the metal braid layer 42, the elastic layer 43 and the outer lubrication layer 44 are sequentially arranged along the inner wall of the extension pipe 4 to the outer wall of the extension pipe 4. It will be understood that the extension pipe 4 is provided with an inner lubricating layer 41, a metal braid layer 42, an elastic layer 43 and an outer lubricating layer 44 in this order from inside to outside in the radial direction thereof.

Utility model people discover through the research, sacculus guide pipe among the correlation technique can only reach footpath arteria chief oralis open position, can't further go deep into the blood vessel, and its reason lies in the distal end of sacculus guide pipe shorter, and does not have the hardness change, can't go deep into farther blood vessel position to the pipe diameter of sacculus guide pipe is thicker, can't be passed through by more tiny blood vessel. Therefore, the balloon guide catheter of the embodiment of the present invention can be inserted into a patient's blood vessel at a far position by providing the extension tube 4. Thereby improving the applicability of the balloon guide catheter, and the balloon guide catheter has simple structure and convenient operation. Additionally, the utility model discloses sacculus guide pipe is through the layer structure that sets up above-mentioned extension pipe 4, can be so that extension pipe 4 can guarantee the lubricating property of its inner wall and outer wall, can improve extension pipe 4's structural strength again, and then make sacculus guide pipe's result of use better.

The utility model discloses sacculus guide pipe can avoid the outer vascular inner wall of damage of extension tube 4 through setting up elastic layer 43, has improved the security when sacculus guide pipe uses. For example, the elastic layer 43 is at least one of a polyamide layer, a polyether amide layer, and a polyurethane layer. It is understood that the elastic layer 43 may be made of polyamide, polyether amide, polyurethane, etc., wherein the elastic layer 43 may be divided into a multi-segment structure, and different elastic materials are provided to different segments of the elastic layer 43, i.e., the different elastic materials may be designed in segments along the axial direction of the extension pipe 4. Specifically, the elastic layer 43 may be butt-jointed by a thermal butt-jointing process, and is processed on the metal braid 42 by a thermal recovery process, so as to improve the connection strength of the extension pipe 4.

Further, as shown in fig. 2, the metal braid 42 is braided from a resilient, shape-memory metal wire. For example, the wire may be made of nitinol, 304 stainless steel, or the like, so as to improve the connection strength of the extension pipe 4. Specifically, the metal braid 42 has a braid node per inch (PPI) of 60 or more and 150 or less, and the utility model discloses a person finds through experimental studies that when the braid node per inch of the metal braid 42 is located in the above range, the strength of the metal braid 42 is high, and the service life is long.

Further, as shown in fig. 2, the balloon guide catheter according to the embodiment of the present invention can improve the smoothness of the inner wall of the extension tube 4 by providing the inner lubrication layer 41, so that other instruments can pass through the extension tube 4, thereby improving the reliability of the balloon guide catheter when in use. For example, the inner lubricating layer 41 is at least one of a polytetrafluoroethylene layer and a high-density polyethylene layer. In other words, the inner lubrication layer 41 may be composed of a polytetrafluoroethylene material and a high-density polyethylene material, so that the smoothness of the inner wall of the extension pipe 4 may be further improved.

Optionally, as shown in fig. 2, the outer lubricant layer 44 is a polyvinylpyrrolidone layer, and the utility model discloses a person finds through experimental research that, when the outer lubricant layer 44 is a polyvinylpyrrolidone material, the lubricant property of the extension tube 4 in the blood vessel can be significantly improved, so that the extension tube 4 is smoother when moving in the blood vessel.

In some embodiments, as shown in fig. 1, the outer diameter of the extension pipe 4 gradually decreases in a direction from the end of the extension pipe 4 adjacent to the inner pipe 21 to the end of the extension pipe 4 facing away from the inner pipe 21 (e.g., from top to bottom in fig. 1). In other words, the extension tube 4 is designed to have a variable diameter, the outer diameter of the extension tube 4 is configured to be thick to thin from the proximal end to the distal end, and the extension tube 4 is designed to follow the shape of a human blood vessel, thereby further improving the use effect of the extension tube 4 of the balloon guide catheter.

Alternatively, as shown in fig. 1, the outer diameter of the extension pipe 4 is 1.5 mm or more and 5 mm or less. It will be appreciated that when the outer diameter of the extension tube 4 satisfies the above range, the extension tube 4 can be easily adapted to blood vessels of different diameters, thereby expanding the range of use of the extension tube 4 and providing the applicability of the balloon guide catheter.

Further, as shown in fig. 1, the extension tube 4 is connected to the inner tube 21 and the outer tube 22 by welding, and it can be understood that the welding method may be thermal welding, overlapping, bonding, etc. for butt joint, so that the production cost of the balloon guide catheter may be low and the reliability of connection may be high.

In some embodiments, as shown in fig. 1, the axis of the main cell channels 11 and the axis of the side cell channels 12 are at an angle, for example, an acute angle, so as to facilitate the injection of liquid from the side cell channels 12. Optionally, the base body 1 is a double-cavity luer base, and the side hole 12 is internally provided with the one-way valve 6, so that injected liquid can only flow in a one-way manner, and the reliability of the balloon guide catheter during operation is improved.

In some embodiments, as shown in FIG. 1, a developer material is disposed within the elastic layer 43, the developer material being visible under X-rays. For example, the developing material may be barium sulfate or bismuth sulfate, so that the doctor can see the shape of the entire extension tube 4 under X-ray, and the visualization degree of the balloon guide catheter is improved.

Further, as shown in fig. 1, an end of the extension pipe 4 away from the inner pipe 21 (e.g., a lower end of the extension pipe 4 in fig. 1) is provided with a development mark 5, and the development mark 5 is visible under X-ray. For example, the developing mark 5 is a ring-shaped structure, and the developing mark 5 is embedded in the extension tube 4, so that a doctor can accurately control the extension tube to reach the position of a blood vessel under X-ray, and the use of the balloon guide catheter is further facilitated.

As shown in fig. 1 to 3, before the balloon guide catheter is used, a contrast catheter is used to measure the distance between the position of the blocked blood vessel and the opening of the common carotid artery, and a balloon guide catheter with an extension tube of a proper length is selected according to the distance;

the saccule 3 is in a retraction state, the saccule guide catheter is pushed in the blood vessel, the head end position of the extension tube of the saccule guide catheter is concerned under the guidance of X-ray, and after the head end position of the extension tube of the saccule guide catheter reaches the lesion position, the saccule 3 is inflated by liquid to seal the near end of the blood vessel;

the blood vessel is dredged by means of thrombus removal through the device, for example, a balloon guide catheter can be injected with drugs, and the blocked blood vessel is dredged through the device. Thereby the balloon guide catheter of the embodiment of the utility model has simple operation and good use effect, and can improve the success rate of the operation.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (11)

1. A balloon catheter tube, comprising:

the seat body is provided with a main duct and a side duct;

the composite pipe comprises an inner pipe and an outer pipe, the inner pipe is arranged in the outer pipe, a first channel is defined by the inner wall of the inner pipe, a second channel is defined by the inner wall of the outer pipe and the outer wall of the inner pipe, the first channel is communicated with the main pore passage, and the second channel is communicated with the side pore passage;

the balloon is arranged at one end of the outer tube, which is far away from the seat body, and is communicated with the second channel, and the balloon guide catheter adjusts the volume of the balloon by adjusting the amount of liquid filled into the balloon;

the extension pipe, the extension pipe is located the inner tube is kept away from the one end of pedestal and with first passageway intercommunication, the extension pipe includes interior lubricant film, woven metal layer, elastic layer and outer lubricant film, interior lubricant film woven metal layer the elastic layer with outer lubricant film follows the inner wall of extension pipe to arrange the setting in proper order in the direction of the outer wall of extension pipe.

2. The balloon guide catheter of claim 1, wherein the elastic layer is at least one of a polyamide layer, a polyetheramide layer, and a polyurethane layer.

3. A balloon guide catheter according to claim 1 wherein the metal braid is braided from a resilient, shape memory wire.

4. The balloon guide catheter according to claim 1, wherein the metal braid has a braid node per inch of 60 or more and 150 or less.

5. The balloon guide catheter of claim 1, wherein the inner lubricious layer is at least one of a polytetrafluoroethylene layer and a high density polyethylene layer.

6. A balloon guide catheter according to claim 1 wherein the outer lubricious layer is a layer of polyvinylpyrrolidone.

7. The balloon guide catheter of claim 1, wherein the outer diameter of the extension tube tapers in a direction from the end of the extension tube adjacent the inner tube to the end of the extension tube opposite the inner tube.

8. The balloon guide catheter of claim 1, wherein the extension tube has an outer diameter of 1.5 mm or more and 5 mm or less.

9. A balloon guide catheter according to claim 1, wherein the extension tube is welded to the inner tube and the outer tube.

10. A balloon guide catheter according to claim 1 wherein a visualization material is disposed within the elastic layer, the visualization material being visible under X-rays.

11. A balloon guide catheter according to claim 1 wherein the end of the extension tube remote from the inner tube is provided with visualization indicia, the visualization indicia being visible under X-rays.

Images