CN114680990B

CN114680990B - Intracranial plugging balloon catheter

Info

Publication number: CN114680990B
Application number: CN202210102389.5A
Authority: CN
Inventors: 石满馨; 王震; 李志刚; 王国辉
Original assignee: Shanghai Xinwei Medical Technology Co ltd
Current assignee: Shanghai Xinwei Medical Technology Co ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2023-06-23
Anticipated expiration: 2042-01-27
Also published as: CN114680990A

Abstract

The invention discloses an intracranial plugging balloon catheter, which comprises a handle, wherein one end of the handle is connected with a first diffusion tube, the interior of the handle is sleeved with a second diffusion tube, the interior of the second diffusion tube is connected with a woven tube, a balloon component is arranged on one side of the woven tube, an air hole is formed in the balloon component and used for pressurizing and expanding the balloon component, a guide wire is sleeved in the balloon component, and one end of the guide wire is provided with a developing spring which is inserted into the balloon component and used for switching the expansion state of the balloon component. The catheter of the plugging sacculus of the device is of a single-cavity design, so that the filling and discharging cavity is larger, and because the filling and discharging cavity is larger, gas or liquid which can be filled in the unit time is more, so that the filling of the plugging sacculus is quicker, and meanwhile, a unique physical plugging mode is adopted, when pressure relief is needed, the effect of quick pressure relief can be realized by only pulling out a guide wire, and compared with the prior art, the difficulty of pressure relief can be reduced.

Description

Intracranial plugging balloon catheter

Technical Field

The invention relates to the technical field of medical instruments, in particular to an intracranial plugging balloon catheter.

Background

The bleeding diseases such as intracranial aneurysms have extremely high disability rate and mortality rate, and patients suffering from the diseases are gradually increased in recent years, and with the continuous advocation of medical instruments and intervention technology development in China and the accumulation of experience of nerve interventional doctors, the intravascular treatment has become the first treatment method for reducing the re-bleeding rate and mortality rate of the intracranial aneurysms, and the most widely applied method is the intratumoral embolism treatment at present, wherein the designed medical device comprises a simple spring ring, a liquid embolic agent, an intratumoral embolism device, a balloon auxiliary technology and the like, and the balloon occlusion catheter is a tool for assisting temporary vascular occlusion during operation of other instruments, so that the blocking and the control of blood flow are facilitated.

The existing CN110548211A provides a medicine saccule catheter with a plugging function, the design of the double-cavity catheter body is adopted, the double-cavity catheter body comprises a guide wire lumen and a water injection lumen, the tail end of the catheter body is provided with a guide wire port and a water injection hole, a matched guide wire enters the guide wire lumen through the guide wire port, the guide catheter enters a blood vessel, the water injection hole is communicated with a saccule through the catheter body to form the water injection lumen, and the water injection lumen is used as a filling saccule channel to realize filling and discharging of the saccule, the filling and discharging lumen is smaller, the requirement on filling and discharging operation is higher, the condition of difficult pressure release exists, and the clinical operation of the double-cavity saccule catheter is more complicated. Meanwhile, more balloon catheter contrast agent cavities in the current market are smaller, the developing performance in the operation is poor, and filling pressures of some non-compliant balloons and semi-compliant balloons are larger, so that the risk of operation complications exists.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides an intracranial plugging balloon catheter.

In order to achieve the above purpose, the present invention adopts the following technical scheme: an intracranial plugging balloon catheter comprises a handle, wherein one end of the handle is connected with a first diffusion tube, a second diffusion tube is sleeved in the handle, and a braided tube is connected in the second diffusion tube;

the balloon assembly is arranged on one side of the braided tube, and an air hole is formed in the balloon assembly and used for pressurizing and expanding the balloon assembly;

the guide wire is sleeved in the balloon assembly, and one end of the guide wire is provided with a developing spring which is inserted into the balloon assembly and used for switching the expansion state of the balloon assembly.

As a further description of the above technical solution: the balloon assembly comprises a catheter, a blocking balloon is wrapped outside the catheter, an inflation inlet is formed in the outer portion of the catheter, and developing rings are arranged at two ends of the catheter.

As a further description of the above technical solution: the inner diameter of the conduit is two sections, wherein the inner diameter of one section is larger than that of the other section, and the joint of the two sections is in gradual transition.

As a further description of the above technical solution: the developing ring is made of platinum iridium alloy.

As a further description of the above technical solution: the blocking balloon is made of super-compliance materials.

As a further description of the above technical solution: the catheter is coated with a hydrophilic coating on the outside of the effective length.

As a further description of the above technical solution: the guide wire comprises the developing spring, a rod body is arranged at one end far away from the developing spring, and a guide wire rotator is arranged outside the rod body.

As a further description of the above technical solution: the diameter of the rod body gradually decreases from the proximal end to one end of the developing spring.

As a further description of the above technical solution: the outer diameter size of the developing spring is matched with the inner diameter size of the guide tube.

As a further description of the above technical solution: the first diffusion tube and the second diffusion tube are stress diffusion tubes, one end of the first diffusion tube is sleeved outside the handle, and the other end of the first diffusion tube is sleeved outside the second diffusion tube.

The invention has the following beneficial effects:

1. the catheter of the plugging saccule is designed into a single cavity, so that the filling and discharging cavity is larger, and more gas or liquid can be filled in the plugging saccule in unit time because the filling and discharging cavity is larger, so that the plugging saccule can be filled more rapidly.

2. According to the invention, the inner cavity inside the balloon catheter is of a variable diameter design, the inner cavity of the balloon catheter is matched with the outer diameter of the developing spring connected with one end of the guide wire, when the developing spring is inserted into the balloon catheter, due to the physical blocking mode, the guide wire is pulled out only when pressure relief is needed, so that the effect of rapid pressure relief can be realized, and compared with the prior art, the difficulty of pressure relief can be reduced.

3. Compared with the existing double-cavity design, the single-cavity balloon catheter is simpler and more convenient to operate, is more convenient to operate in operation, and reduces operation difficulty.

4. The invention enables the blocking saccule to be filled under the condition of very small pressure by using the blocking saccule as the super-compliance material, and can conform to any uneven vascular space.

Drawings

FIG. 1 is an overall view of an intracranial occlusion balloon catheter according to the present invention;

FIG. 2 is a schematic view of a balloon assembly of an intracranial occlusion balloon catheter according to the present invention;

FIG. 3 is a schematic illustration of a guidewire for an intracranial occlusion balloon catheter according to the present invention;

fig. 4 is a schematic diagram of an intracranial occlusion balloon catheter according to the present invention when the occlusion balloon is inflated.

Legend description:

1. a handle; 2. a first diffusion tube; 3. a second diffusion tube; 4. braiding a tube; 5. a balloon assembly; 501. A conduit; 502. plugging the sacculus; 503. an inflation inlet; 504. a developing ring; 6. a guide wire; 7. a developing spring; 8. a rod body; 9. a guidewire rotator.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present invention; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-4, one embodiment provided by the present invention is: an intracranial plugging balloon catheter comprises a handle 1, wherein one end of the handle 1 is connected with a first diffusion tube 2, a second diffusion tube 3 is sleeved in the handle 1, the second diffusion tube 3 is connected with a woven tube 4 in the second diffusion tube 3;

the balloon assembly 5 is arranged on one side of the braided tube 4, an air hole is formed in the balloon assembly 5 and used for pressurizing and expanding the balloon assembly 5, the balloon assembly 5 comprises a catheter 501, a blocking balloon 502 is coated on the outer portion of the catheter 501, an air charging hole 503 is formed in the outer portion of the catheter 501, and developing rings 504 are arranged at two ends of the catheter 501;

according to the above technical scheme, the braided tube 4 and the catheter 501 are controlled to move to the position to be expanded by the handle 1, after reaching the position to be expanded, gas or liquid is introduced into the plugging balloon 502 by the clamp type precise injector matched with the inflation inlet 503, so that the plugging balloon 502 is inflated, the risk of breaking the balloon is avoided, the catheter 501 adopts a single-cavity tube design, compared with the existing double-cavity tube body, the inflation and deflation cavity body is larger, the inflation speed of the plugging balloon 502 is faster, and meanwhile, due to the adoption of the single-cavity tube design, the operation is simpler and more convenient than the existing double-cavity tube design.

The guide wire 6 is sleeved in the balloon assembly 5, and one end of the guide wire 6 is provided with a developing spring 7 which is inserted into the balloon assembly 5 and used for switching the expansion state of the balloon assembly 5.

Further, the inner diameter of the conduit 501 is two-section, wherein the inner diameter of one section is larger than that of the other section, and the connection of the two sections is a gradual transition.

According to the above technical scheme, the inside of the catheter 501 is of a variable diameter design, the guide wire 6 is inserted into the catheter 501, one end of the guide wire 6 is provided with the developing spring 7, and the outer diameter of the developing spring 7 is matched with the inner diameter of the catheter 501, when the developing spring 7 is inserted into the catheter 501 in the sealing balloon 502, the inner cavity size of the catheter 501 is matched with the outer diameter size of the developing spring 7, so that the inside of the sealing balloon 502 and the inflation inlet 503 can be kept in a sealing state, and the effect of accurate physical sealing is achieved.

The blocking balloon 502 is made of super-compliance material, the specific material can be polyamide, polyvinyl alcohol or latex, the blocking balloon can be filled under the condition of very small pressure, meanwhile, due to the characteristic of the super-compliance material, the blocking balloon can conform to any uneven vascular space, when the guide wire 6 is pulled out through the guide wire rotator 9, the developing spring 7 is separated from the reducing inner cavity of the guide tube 501, the air charging opening 503 is communicated with the inner cavity of the guide tube 501, instant pressure relief can be realized, and the condition of difficult pressure relief does not exist.

Further, the developing ring 504 is made of platinum iridium alloy, so that the position of the blocking balloon 502 can be seen more accurately in the operation process, and the safety and effectiveness of the operation are improved.

Further, the catheter 501 is coated with a hydrophilic coating on the outside of the effective length, which will not damage the vessel wall during passage in the vessel, making the catheter 501 more permeable and lubricious.

Further, the guide wire 6 includes a developing spring 7, a rod body 8 is provided at one end away from the developing spring 7, and a guide wire rotator 9 is provided outside the rod body 8.

Further, the diameter of the rod body 8 gradually decreases from the proximal end to one end of the developing spring 7, so that the overall passing performance and softness of the guide wire 6 are better.

Further, the first diffusion tube 2 and the second diffusion tube 3 are stress diffusion tubes, and one end of the first diffusion tube 2 is sleeved outside the handle 1, and the other end is sleeved outside the second diffusion tube 3, so that the proximal end of the catheter 501 and the handle 1 can be in seamless connection, and meanwhile, the flexibility of the catheter 501 is enhanced.

Working principle: when the device is used, the braided tube 4 and the catheter 501 are controlled to move to a position to be expanded through the handle 1, after the position to be expanded is reached, gas or liquid is introduced into the blocking balloon 502 through the clamping type precise injector matched with the inflation port 503, so that the blocking balloon 502 is inflated, the risk of breaking the balloon is avoided, the inside of the catheter 501 adopts a single-cavity tube design, compared with the existing double-cavity tube body, the cavity for inflation and deflation is larger, so that the inflation speed of the blocking balloon 502 is faster, the inside of the catheter 501 is of a variable-diameter design, the guide wire 6 is inserted into the inside of the catheter 501, one end of the guide wire 6 is provided with the developing spring 7, the outer diameter of the developing spring 7 is matched with the inner diameter of the catheter 501, when the developing spring 7 is inserted into the catheter 501 in the blocking balloon 502, because the size of the inner cavity of the catheter 501 is matched with the outer diameter of the developing spring 7, the inner parts of the inflation inlet 503 and the blocking balloon 502 can be kept in a sealing state, so that the effect of accurate physical blocking is achieved, meanwhile, the blocking balloon 502 is made of super-compliant material, the blocking balloon can be filled under the condition of very small pressure, meanwhile, due to the characteristics of the super-compliant material, the balloon can conform to any uneven vascular space, when the guide wire 6 is pulled out through the guide wire rotator 9, the developing spring 7 and the reducing inner cavity of the catheter 501 are separated from each other, the inflation inlet 503 is communicated with the inner cavity of the catheter 501, instant pressure relief can be realized, the condition of difficult pressure relief can not exist, and the developing rings 504 are arranged at the two ends of the catheter 501 wrapped by the blocking balloon 502, so that the position of the blocking balloon 502 can be observed more clearly in the process of operation, the operation is safer and more effective.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.

Claims

1. An intracranial occlusion balloon catheter, comprising a handle (1), characterized in that: one end of the handle (1) is connected with a first diffusion tube (2), a second diffusion tube (3) is sleeved in the handle (1), and a braided tube (4) is connected in the second diffusion tube (3);

the balloon assembly (5) is arranged on one side of the braided tube (4), and an air hole is formed in the balloon assembly (5) and used for pressurizing and expanding the balloon assembly (5);

the guide wire (6) is sleeved in the balloon assembly (5), and one end of the guide wire (6) is provided with a developing spring (7) to be inserted into the balloon assembly (5) for switching the expansion state of the balloon assembly (5).

2. An intracranial occlusion balloon catheter as recited in claim 1, wherein: the balloon assembly (5) comprises a catheter (501), a blocking balloon (502) is wrapped outside the catheter (501), an inflation inlet (503) is formed in the outside of the catheter (501), and developing rings (504) are arranged at two ends of the catheter (501).

3. An intracranial occlusion balloon catheter as recited in claim 2, wherein: the inner diameter of the conduit (501) is two sections, wherein the inner diameter of one section is larger than that of the other section, and the joint of the two sections is in gradual transition.

4. An intracranial occlusion balloon catheter as recited in claim 2, wherein: the developing ring (504) is made of platinum iridium alloy.

5. An intracranial occlusion balloon catheter as recited in claim 2, wherein: the occlusion balloon (502) is a super-compliant material.

6. An intracranial occlusion balloon catheter as recited in claim 2, wherein: the catheter (501) is coated with a hydrophilic coating on the outside of the effective length.

7. An intracranial occlusion balloon catheter as recited in claim 1, wherein: the guide wire (6) comprises the developing spring (7), a rod body (8) is arranged at one end far away from the developing spring (7), and a guide wire rotator (9) is arranged outside the rod body (8).

8. An intracranial occlusion balloon catheter as recited in claim 7, wherein: the diameter of the rod body (8) gradually decreases from the proximal end to one end of the developing spring (7).

9. An intracranial occlusion balloon catheter as recited in claim 2, wherein: the outer diameter of the developing spring (7) is matched with the inner diameter of the guide pipe (501).

10. An intracranial occlusion balloon catheter as recited in claim 1, wherein: the first diffusion tube (2) and the second diffusion tube (3) are stress diffusion tubes, one end of the first diffusion tube (2) is sleeved outside the handle (1), and the other end of the first diffusion tube is sleeved outside the second diffusion tube (3).