CN213048928U

CN213048928U - Medical balloon catheter

Info

Publication number: CN213048928U
Application number: CN202021177040.0U
Authority: CN
Inventors: 李学万
Original assignee: Shenzhen Lanteng Technology Co ltd
Current assignee: Shenzhen Lanteng Technology Co ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-04-27
Anticipated expiration: 2030-06-22

Abstract

The utility model relates to a medical sacculus pipe, include: the tubular main body and the saccule fixedly sleeved on the main body; the main part is including locating axial feed liquor lumen and axial play liquid lumen in the main part and seting up punching press mouth and the pressure release mouth on the main part outer wall, punching press mouth and feed liquor lumen intercommunication, pressure release mouth and play liquid lumen intercommunication, and punching press mouth and pressure release mouth are all located between the near-end junction and the distal end junction of sacculus and main part. The medical balloon catheter provided by the application has the advantages that liquid flows in one direction in the exhaust process, gas in the exhaust catheter at dead angles can be avoided, the liquid flows out from the liquid outlet and can be considered as complete exhaust, and follow-up operation can be carried out. The application provides a simple and effective gas evacuation scheme, simplifies the clinical operation steps of doctors, and saves the operation time. Meanwhile, as little air residue as possible in the catheter can provide guarantee for the safety and accuracy of balloon filling. Once the saccule is accidentally broken, serious consequences such as air embolism and the like cannot be caused.

Description

Medical balloon catheter

Technical Field

The utility model relates to an intervene the medical instrument field, especially relate to medical sacculus pipe.

Background

Interventional therapy is an advanced and efficient clinical treatment means which is rapidly developed in recent years, namely, an interventional operation instrument such as a balloon catheter is sent to a lesion in a body along a blood vessel or other lumens in the body for treatment by using a puncture cannula technology. It has the advantages of light wound, low risk, short recovery period, etc. and may be used widely in clinical treatment of cardiac vascular disease, cerebral vascular disease, tumor and vascular disease.

Clinically, the balloon catheter all needs the exhaust operation before using, and the air in the cavity of the catheter is emptied to prevent the balloon from interfering with the balloon filling effect in the balloon filling process. Such as an intravascular measurement balloon, the gas within the balloon may interfere with visualization of the contrast agent, resulting in incomplete balloon visualization; also, as the microvascular decompression technique commonly adopted in the field of extraneurosis is used for treating trigeminal neuralgia, the pear-shaped saccule in the Maishi sac is an indication of effective compression. Further, when the balloon is accidentally broken during the filling process in the body, the gas in the balloon can form air embolism in the blood circulation system, and serious consequences are caused.

Therefore, the air exhaust operation of the balloon catheter is particularly important. Traditional sacculus pipe exhaust mode adopts and sucks repeatedly after filling with certain liquid in advance, and complex operation also can't guarantee the air completely to arrange completely when consuming time. The convenience and effectiveness of balloon catheter venting more directly impact the convenience and safety of the procedure.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problem or at least partially solve the above technical problem, the present application provides a medical balloon catheter including: the tubular main body and the saccule fixedly sleeved on the main body; the main body comprises an axial liquid inlet pipe cavity and an axial liquid outlet pipe cavity which are arranged in the main body, and a stamping port and a pressure relief port which are arranged on the outer wall of the main body, wherein the stamping port is communicated with the liquid inlet pipe cavity, the pressure relief port is communicated with the liquid outlet pipe cavity, and the stamping port and the pressure relief port are both arranged between the near-end joint and the far-end joint of the balloon and the main body.

Preferably, the transverse cross section of the liquid inlet pipe cavity is in a sector ring shape; the transverse section of the liquid outlet pipe cavity is in a sector ring shape.

Preferably, the liquid inlet pipe cavity and the liquid outlet pipe cavity are matched to encircle the central shaft of the main body.

Preferably, the transverse section of the liquid inlet pipe cavity is in the shape of a circular arc; the transverse section of the liquid outlet pipe cavity is arc-shaped.

Preferably, the pressure relief opening and the pressure relief opening are axially offset from one another.

Preferably, the medical balloon catheter further comprises a liquid inlet and a liquid outlet which are arranged on one side of the near end of the main body; the liquid inlet is communicated with the liquid inlet pipe cavity, and the liquid outlet is connected with the liquid outlet pipe cavity.

Preferably, the medical balloon catheter further comprises a two-way valve, and the liquid outlet is communicated with the liquid outlet cavity through the two-way valve.

Preferably, the medical balloon catheter further comprises an outer buckle fixedly sleeved on the joint of the balloon and the proximal end of the main body, and the outer buckle is provided with a developing part.

Preferably, the main body further comprises an axial guide wire lumen arranged in the main body, and the liquid inlet lumen and the liquid outlet lumen are matched to surround the guide wire lumen.

Preferably, the medical balloon catheter further comprises a tip disposed on the distal end face of the body.

Compare in traditional medical sacculus pipe, the medical sacculus pipe of this application is at exhaust in-process liquid one-way flow, and the gas in the exhaust pipe at no dead angle can be regarded as exhaust completely from the liquid outlet outflow to liquid, can carry out follow-up operation. The application provides a simple and effective gas evacuation scheme, simplifies the clinical operation steps of doctors, and saves the operation time. Meanwhile, as little air residue as possible in the catheter can provide guarantee for the safety and accuracy of balloon filling. Once the saccule is accidentally broken, serious consequences such as air embolism and the like cannot be caused.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

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 description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

In the drawings:

fig. 1 is a schematic structural view of a medical balloon catheter according to a first embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the body of FIG. 1 at the distal end;

FIG. 3 is a transverse cross-sectional view of the body of FIG. 1;

fig. 4 is a schematic structural view of a medical balloon catheter according to a second embodiment of the present invention;

FIG. 5 is a partial schematic structural view of the body of FIG. 4 at the distal end;

figure 6 is a transverse cross-sectional view of the body of figure 4.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "upper", "lower", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate that the device or element referred to must have a specific direction, and thus, should not be construed as limiting the present invention.

It is also noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or intervening elements may also be present. The terms "first", "second", "third", etc. are only for convenience in describing the present technical solution, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. 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 following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

In the description of the present invention, it should be noted that, in the field of interventional medical devices, the proximal end refers to the end closer to the operator, and the distal end refers to the end farther from the operator; axial refers to a direction parallel to the line joining the center of the distal end and the center of the proximal end of the medical device. The foregoing definitions are for convenience only and are not to be construed as limiting the present invention.

As shown in fig. 1 to 3, a first embodiment of a medical balloon catheter 1 of the present invention includes: a tubular main body 11 and a balloon 12 fixedly sleeved on the main body 11; the main body 11 comprises an axial liquid inlet cavity 111 and an axial liquid outlet cavity 112 which are arranged in the main body 11, and a stamping port 113 and a pressure relief port 114 which are arranged on the outer wall of the main body 11, wherein the stamping port 113 is communicated with the liquid inlet cavity 111, the pressure relief port 114 is communicated with the liquid outlet cavity 112, and the stamping port 113 and the pressure relief port 114 are both arranged between the near-end joint 121 and the far-end joint 122 of the balloon 12 and the main body 11.

The medical balloon catheter 1 is provided with a special exhaust channel (namely the liquid outlet tube cavity 112) so as to facilitate the evacuation of air in the balloon 12 cavity in the operation of a doctor, avoid the tedious operation of repeated suction of the doctor, and directly discharge liquid from the liquid outlet tube cavity 112, thereby completely discharging the air in the balloon 12 cavity. The balloon 12 with the air discharged completely can be completely developed in the filling process, and the filling state of the balloon 12 can be displayed in real time. Should the balloon 12 accidentally leak or rupture during inflation, the contrast agent will only leak so far that gas enters the blood circulation system causing other serious accidents such as air embolism. The liquid outlet pipe cavity 112 additionally arranged can ensure one-way circulation of liquid, simplifies the exhaust operation, ensures complete exhaust after the liquid flows out, and is safe and reliable.

Specifically, the axial direction of the tubular body 11 is the direction of the line connecting the distal end and the proximal end thereof, and the central axis of the body 11 is the axial direction passing through the center of the cross section of the body 11. In this embodiment, the main body 11 has a single-tube double-cavity structure, as shown in fig. 3, the double cavities are a liquid inlet cavity 111 and a liquid outlet cavity 112, and the transverse cross-sectional shape of the liquid inlet cavity 111 is circular arc; the transverse section of the liquid outlet pipe cavity 112 is circular arc. Further, the transverse cross section of the liquid inlet pipe cavity 111 and the transverse cross section of the liquid outlet pipe cavity 112 may be symmetrically distributed with respect to the cross-sectional diameter.

To ensure pressure equalization of the inlet and outlet liquids and as complete a liquid removal as possible, the ram port 113 and the pressure relief port 114 may be offset from each other in the axial direction of the body 11. For example, in one embodiment, the pressure relief vent 114 is provided near the distal end of the body 11, and the ram vent 113 is provided on the proximal side with respect to the pressure relief vent 114, whereby the liquid flowing in from the ram vent 113 can be discharged from the pressure relief vent 114 near the distal end as much as possible.

The balloon 12 is a conventional medical balloon, such as a measurement balloon, and it should be understood that reference to the balloon 12 in this application is a general purpose medical balloon and is not limited to a particular use of the balloon. The balloon 12 may be made of conventional medical elastic materials, such as silicone, latex, TPU, and the like. The balloon 12 is fixedly sleeved on the main body 11 and includes a proximal end joint 121 and a distal end joint 122 along the axial direction, and at the joints, the balloon 12 is fixedly connected with the main body 11 by a connection method such as glue, so as to play a role in sealing.

Further, the medical balloon catheter 1 further comprises an external buckle 17 fixedly sleeved on the proximal end connection 121 of the balloon 12 and the main body 11, and the external buckle 17 can play a role in fixing and sealing the balloon 12. Meanwhile, the outer button 17 is provided with a developing part, which can be separately arranged, or the outer button 17 can be made of developing material to realize development. By this developing section, the precise position of the balloon 12 can be determined under X-ray.

The medical balloon catheter 1 further comprises a tip 16 disposed on the distal end surface of the main body 11, the tip 16 being configured to guide the catheter as it enters the lumen. The end surface of the tip 16 may be a curved surface to avoid damage to the lumen.

The medical balloon catheter 1 also comprises a liquid inlet 14 and a liquid outlet 13 which are arranged on one side of the near end of the main body 11; the liquid inlet 14 is communicated with the liquid inlet pipe cavity 111, and the liquid outlet 13 is connected with the liquid outlet pipe cavity 112. In specific implementation, a two-way valve 15 may be further disposed, and the liquid outlet 13 is communicated with the liquid outlet cavity 112 through the two-way valve 15, and is used for controlling the opening and closing of the liquid outlet 13. The loading port 14 may be a universal medical luer.

In the exhaust operation, the two-way valve 15 is opened to be in an open state, so that the liquid outlet 13 is opened, a medical injector or an inflator is used for extracting a certain amount of liquid such as physiological saline or contrast medium, the liquid is injected into the liquid inlet lumen 111 from the liquid inlet 14, the liquid flows through the punching opening 121 to enter the balloon 12, then flows through the pressure relief opening 114 and the liquid outlet lumen 112 and is discharged from the liquid outlet 13, and the whole liquid flows in a single direction without repeated suction.

Compare in traditional medical sacculus pipe 1, the one-way flow of medical sacculus pipe liquid in exhaust process of this application, the gas in the exhaust pipe at no dead angle can be regarded as exhaust completely to liquid from liquid outlet 13 outflow, can carry out follow-up operation. The application provides a simple and effective gas evacuation scheme, simplifies the clinical operation steps of doctors, and saves the operation time. Meanwhile, as little air residue as possible in the catheter can provide guarantee for the safety and accuracy of the filling of the balloon 12. Once the balloon 12 is accidentally broken, serious consequences such as air embolism and the like cannot occur.

As shown in fig. 4 to 6, compared with the medical balloon catheter 1 of the first embodiment, the main body 21 of the medical balloon catheter 2 according to the second embodiment of the present application further includes an axial guide wire lumen 215 provided in the main body 21, and the liquid inlet lumen 211 and the liquid outlet lumen 212 are fitted around the guide wire lumen 215. Specifically, the transverse cross-sectional shape of the liquid inlet lumen 211 may be a fan-ring shape, the transverse cross-sectional shape of the liquid outlet lumen 212 may also be a fan-ring shape, the transverse cross-sectional shape of the wire guide lumen 215 is a circle, the wire guide lumen 215 is disposed at the central axis, and the liquid inlet lumen 211 and the liquid outlet lumen 212 are matched to encircle the central axis of the main body 21.

In the exhaust process of the medical balloon 22 catheter, the two-way valve 25 is adjusted to be in an open state, then liquid is injected from the liquid inlet 24 by using an injector, the liquid inlet lumen 211 is communicated with the liquid inlet 24, the liquid enters the balloon 22 through the stamping port 213 at one end of the balloon 22 and then enters the liquid outlet lumen 212 through the pressure relief port 214 at the other end of the balloon 22, so that the liquid flows out from the liquid outlet 23 and is exhausted out of the catheter, the exhaust indicates that the gas in the balloon 22 is exhausted, then the two-way valve 25 is closed, the exhaust operation is completed, and the balloon catheter can be subjected to subsequent operation. The guide wire lumen 215 of the present embodiment allows a guide wire (not shown) to enter the guide wire lumen 215 from the guide wire port 26, so as to meet the requirement of the intravascular interventional operation that the guide wire needs to be matched for delivery. For example, after the above-described air-discharging operation is completed, the balloon 22 catheter may be sent to a predetermined position along a guide wire, and a surgical operation such as expansion of the balloon 22 may be performed.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A medical balloon catheter, comprising: the tubular main body and the balloon fixedly sleeved on the main body; wherein, the main part is including locating axial feed liquor lumen and axial in the main part go out the liquid lumen and set up in punching press mouth and pressure release mouth on the main part outer wall, the punching press mouth with feed liquor lumen intercommunication, the pressure release mouth with go out liquid lumen intercommunication, the punching press mouth with the pressure release mouth is all located the sacculus with between the near-end junction and the distal end junction of main part.

2. The medical balloon catheter according to claim 1, wherein the transverse cross-sectional shape of the liquid inlet lumen is a sector ring shape; the transverse section of the liquid outlet pipe cavity is in a sector ring shape.

3. The medical balloon catheter according to claim 2, wherein the fluid inlet lumen and the fluid outlet lumen cooperate to encircle a central axis of the main body.

4. The medical balloon catheter according to claim 1, wherein the transverse cross-sectional shape of the liquid inlet lumen is a circular arc; the transverse section of the liquid outlet pipe cavity is arc-shaped.

5. The medical balloon catheter according to claim 1, wherein the ram port and the pressure relief port are axially offset from each other.

6. The medical balloon catheter according to claim 1, further comprising a liquid inlet and a liquid outlet disposed on a proximal side of the main body; the liquid inlet is communicated with the liquid inlet pipe cavity, and the liquid outlet is connected with the liquid outlet pipe cavity.

7. The medical balloon catheter according to claim 6, further comprising a two-way valve, wherein the liquid outlet is in communication with the liquid outlet lumen through the two-way valve.

8. The medical balloon catheter according to claim 1, further comprising an outer buckle fixedly sleeved on a joint of the balloon and the proximal end of the main body, wherein the outer buckle is provided with a developing part.

9. The medical balloon catheter according to claim 1, wherein the main body further comprises an axial guidewire lumen disposed within the main body, the inlet lumen and the outlet lumen cooperatively surrounding the guidewire lumen.

10. The medical balloon catheter according to claim 1, further comprising a tip disposed on the distal end face of the body.