CN114404788B - Trigeminal balloon catheter and use method thereof - Google Patents
Trigeminal balloon catheter and use method thereof Download PDFInfo
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/1006—Balloons formed between concentric tubes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12136—Balloons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/10—Balloon catheters
- A61M25/1011—Multiple balloon catheters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B2017/12004—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord for haemostasis, for prevention of bleeding
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- Health & Medical Sciences (AREA)
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- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention discloses a trigeminal balloon catheter and a use method thereof. This trigeminal balloon catheter has inside sacculus and outside sacculus at the end connection of pipe to each outside sacculus or inside sacculus all communicates through corresponding lumen, can fill filling medium through the sacculus that corresponds in the lumen, make outside sacculus and inside sacculus combination form different filling shapes and pressure, the demand of the different organizational structure in pathological change position when the trigeminal ganglion is oppressed is nimble matees, improve the directionality that the sacculus provided pressure to pathological change position, with the targeted compression treatment of half-moon festival, improve the treatment.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a trigeminal balloon catheter and a using method of the trigeminal balloon catheter.
Background
Trigeminal neuralgia is considered to be the most serious painful disease suffered by humans so far, is characterized by severe pain on the face at the time of onset, and has frequent onset, severely affecting the quality of life of the patient. The prevalence rate of trigeminal neuralgia is 182/10 ten thousand people, about 200 ten thousand cases exist in China each year, and the market value is about 200 hundred million yuan if the price of the product is 10000 yuan per set. Trigeminal neuralgia is classified into primary trigeminal neuralgia and secondary trigeminal neuralgia. The etiology and pathogenesis of primary trigeminal neuralgia is unknown, and it is thought that the disease is associated with demyelination of the root of the sensory root of the trigeminal nerve or the brain stem. This demyelination is primarily due to compression of adjacent arterial or venous vessels, but may also be caused by multiple sclerosis or other causes. The root of the nerve of the trigeminal neuralgia patient pressed by the blood vessel is examined in the operation, and the demyelination of the pressed part can be found. The secondary trigeminal neuralgia mainly refers to organic lesions existing in or around the trigeminal nerve, and mainly is caused by the occupancy of the horns of the bridged cerebellum, the occupancy of the ganglion of the semilunar and vascular malformations. Experimental studies have shown that spontaneous abnormal nerve impulses caused by anatomical changes associated with vascular compression can be transmitted to adjacent nerve fibers and that pain is almost immediately eliminated after vascular compression is relieved, as also demonstrated clinically.
The primary trigeminal neuralgia is treated by a plurality of methods, such as percutaneous trigeminal ganglion temperature control radio-frequency thermal coagulation treatment, percutaneous trigeminal ganglion microsphere pressing, doxorubicin, alcohol or glycerol trigeminal ganglion blocking therapy, trigeminal peripheral branch avulsion, trigeminal sensory root cutting, trigeminal root microvascular decompression, stereotactic radiosurgery gamma-knife treatment and the like, and various treatment methods have certain curative effects.
Trigeminal root microvascular decompression is considered to be the only treatment currently aimed at the etiology, and its clinical efficacy is widely accepted. The percutaneous trigeminal ganglion microsphere pressing method can maintain the integrity of trigeminal nerve physiological structure, and does not damage nerves, so that the normal feeling of the face is not affected. The minimally invasive treatment through the skin has the advantages of simple operation and small wound.
The operation needs to be carried out under general anesthesia, has special puncture parts and operation technical requirements, is widely applied abroad at present, and is carried out in only a few hospitals in China. And balloon catheters suitable for the indication are not available on the market at present, and other balloons which are not suitable for the indication, such as Fogarty thrombus taking balloon catheters or balloon catheter kits (single balloons) for brain surgery are generally used at home and abroad for performing the surgery. The existing single balloon catheter applied to the trigeminal nerve enters the semilunar node after being punctured under the irradiation of X-rays, the semilunar node is pressed, the single balloon structure is single and rigid, the pressing mode is not specific, the pressure can be applied only according to the preset single balloon shape, the pressure cannot be increased directionally, and the using effect is poor.
The single pressure balloon has no orientation to the compression around the McAb balloon (trigeminal nerve), and the balloon pressure can only be increased by matching with a pressure pump, and the orientation of the balloon pressure can not be formed. Therefore, the trigeminal nerve balloon with adjustable pressure is developed, the pressure can be increased aiming at the part of the semilunar node of the trigeminal nerve, and the pressure meets the clinical requirement, so that the trigeminal nerve balloon is an important development direction of research personnel.
Disclosure of Invention
The invention aims to overcome the defects of single pressure, unoriented pressure regulation and single compression effect formed by a single balloon in the prior art, and provides a trigeminal balloon catheter and a using method thereof.
The invention solves the technical problems by the following technical scheme:
the utility model provides a trigeminal balloon catheter, its includes the pipe and connect in the sacculus of a pipe tip, the sacculus includes outside sacculus and locates at least one inside sacculus in the outside sacculus, be provided with a plurality of cavitary pipes in the pipe, the cavity pipe with outside sacculus the inside sacculus one-to-one intercommunication sets up.
In this scheme, this trigeminal balloon catheter has inside sacculus and outside sacculus at the end connection of pipe to every outside sacculus or inside sacculus all communicate through corresponding lumen, fills filling medium through the sacculus that corresponds, makes outside sacculus and inside sacculus combination form different filling shapes and pressure, and different filling shapes and pressure come the demand of the different organizational structure of lesion site when the trigeminal ganglion is oppressed in nimble matching, improve the sacculus and provide the directionality of pressure to lesion site, with the targeted compression treatment of half-moon festival, improve treatment. In addition, as the plurality of balloons are arranged, the pressure of each balloon can be set to be the same or different, and the pressure of each balloon can be adaptively adjusted according to the different tissue structures so as to meet the different pressure requirements of the lesion part, and the balloon can be used for treating the lesion part by flushing the different balloons with high pressure or low pressure sequentially, and then the balloon is used for treating the lesion part with high pressure, low pressure or high pressure first and then.
Preferably, the lumen is used for filling or discharging filling medium into or from the corresponding external balloon or the internal balloon, and the filling medium is gas or liquid; preferably, the filling medium is a contrast agent.
In this embodiment, the distal end of the lumen may be connected to different injection devices to facilitate filling different balloons with inflation media to provide different shapes and pressures to the treatment site. The filling medium of gas or liquid is convenient for filling or discharging the balloon according to the requirement. Meanwhile, since the gas has a certain compression ratio, by charging different amounts of gas, it is possible to provide a precisely gradually increasing or decreasing pressure value to the lesion.
The contrast agent can be developed or visible under X-rays, so that doctors can observe and operate the operation conveniently, and the operation accuracy is improved.
Preferably, a plurality of the inner balloons are arranged adjacently in sequence along the extending direction of the catheter;
alternatively, the plurality of inner balloons are arranged in two or more rows and are disposed adjacently in order along the extending direction of the catheter.
In this scheme, adopting above-mentioned structure setting, can setting up a plurality of sacculus, under less volumetric circumstances, can arrange more sacculus in order to obtain the various filling shape and the pressure of form.
Preferably, the outer balloon has elasticity.
In this scheme, outside sacculus wraps up inside sacculus, under the condition that all sacculus did not fill filling medium, and the outside sacculus of elastic material makes all sacculus all attached in the outer wall of pipe and has better compliance, is convenient for puncture the back and puts into the port of wheat's bag with the sacculus pipe through the sheath pipe in order to accurately reach the treatment position. Simultaneously, the outer sacculus of elastic material along with the increase of filling medium, and volume can constantly expand to the inner wall of laminating tissue better.
Preferably, the inner balloon is not elastic.
In this scheme, because inside sacculus sets up in the inside of outside sacculus, after inside sacculus is full with filling medium, along with filling medium's increase, inside pressure increases gradually, can provide a higher pressure value for the treatment position.
Preferably, the internal pressure that the internal balloon can withstand is not less than the internal pressure that the external balloon can withstand.
In this scheme, adopt above-mentioned structure setting, can provide different pressure values, if fill the filling medium for inside sacculus and can provide a higher pressure value for the treatment position, if fill the filling medium for outside sacculus and can provide a relatively lower pressure value for the treatment position, be convenient for select according to the treatment needs.
Preferably, the external balloon is capable of withstanding an internal pressure in the range 600-1000 mmHg.
In the scheme, the pressure value can meet the requirement of relatively low pressure value in trigeminal nerve treatment.
Preferably, the internal balloon is capable of withstanding an internal pressure in the range of 1000 to 1300mmHg.
In the scheme, the pressure value can meet the requirement of relatively high pressure value in trigeminal nerve treatment.
Preferably, each of said internal balloons is capable of withstanding different internal pressure values.
In this scheme, because inside sacculus can set up to a plurality ofly to set up the pressure value of every inside sacculus to the difference, then trigeminal nerve sacculus pipe can provide the pressure value of wider scope, in order to satisfy the different pressure value demands in treatment position, improves treatment.
The use method of the trigeminal balloon catheter comprises the step of filling or discharging filling media into or from the outer balloon and/or the inner balloon, so that the outer balloon and the inner balloon are combined to form different filling shapes and pressures to flexibly match the requirements of different tissue structures when the trigeminal ganglion is pressed.
In the scheme, under X-ray perspective monitoring, a puncture needle and a sheath tube are punctured into a half-moon of a trigeminal nerve, then the puncture needle is withdrawn, the sheath tube is reserved at a puncture part, a trigeminal nerve balloon catheter is placed into a port of a McWith's balloon through the sheath tube, and according to the shapes of different tissue structures of the ports of the McWith's balloons of all people, filling media or discharging filling media are respectively filled into an inner balloon and/or an outer balloon, so that the filled inner balloon and the outer balloon are combined to form different filling shapes and pressures, the different filling shapes and pressures flexibly match the requirements of different tissue structures when the half-moon of the trigeminal nerve is pressed, thereby adaptively pressing the half-moon of the trigeminal nerve, releasing the clamping pressure on nerve fibers which cause the trigeminal nerve pain, and causing structural damage to the nerve fibers through the expansion and pressing of the balloons, thereby performing targeted treatment on different nerve root fibers of the trigeminal nerve pain.
When the target expansion site requires a high pressure followed by a low pressure, the inner balloon may be inflated first with a relatively high pressure and then with the outer balloon with a relatively low pressure. When the target expansion part needs to be expanded at low pressure and then expanded at partial high pressure, the external balloon with relatively low pressure can be filled first, and when the target expansion part meets the requirement, the internal balloon with relatively high pressure is filled, and the whole treatment process can be completed only by adjusting the opening sequence of the balloons. Thus, the trouble of changing different balloons in treatment and iatrogenic injury to patients are reduced, and the operation cost is correspondingly reduced.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that:
this trigeminal balloon catheter has inside sacculus and outside sacculus at the end connection of pipe to every outside sacculus or inside sacculus all communicates through corresponding lumen, fills filling medium through the sacculus that corresponds in the lumen, makes outside sacculus and inside sacculus combination form different filling shapes and pressure, and different filling shapes and pressure come the demand of the different organizational structure of lesion site when the trigeminal ganglion was oppressed in nimble matching, improve the sacculus and provide the directionality of pressure to lesion site, can adjust and exert different pressures from multi-direction to carry out targeted compression treatment to the ganglion, improve the treatment. In addition, as the plurality of balloons are arranged, the pressure of each balloon can be set to be the same or different, and the pressure of each balloon can be adaptively adjusted according to the different tissue structures so as to meet the different pressure requirements of the lesion part, and the balloon can be used for treating the lesion part by flushing the different balloons with high pressure or low pressure sequentially, and then the balloon is used for treating the lesion part with high pressure, low pressure or high pressure first and then.
The trigeminal nerve balloon catheter capable of regulating pressure provided by the invention has the advantages of small trauma, capability of keeping the touch sense of the face, simplicity and convenience in operation, high safety and few complications, and can enable a patient to comfortably complete operation under general anesthesia, so that the pain of the patient is reduced, and the trigeminal nerve balloon catheter is a preferred scheme for the elderly or patients with serious system diseases and cannot tolerate major operations.
Drawings
Fig. 1 is a schematic view of the trigeminal balloon catheter according to preferred embodiment 1 of the present invention after balloon inflation.
Fig. 2 is a schematic view of the trigeminal balloon catheter according to the preferred embodiment 1 of the present invention when the balloon is not inflated.
Fig. 3 is a schematic structural view of a cross section of a trigeminal balloon catheter according to preferred embodiment 1 of the present invention.
Fig. 4 is a flowchart of a method of using the trigeminal balloon catheter of preferred embodiment 1 of the present invention.
Fig. 5 is a schematic view showing a structure in which a plurality of inner balloons of the trigeminal balloon catheter of the preferred embodiment 3 of the present invention are arranged in two rows.
Reference numerals illustrate:
catheter 1
Lumen 11
Mounting channel 12
Outer balloon 2
Inner balloon 3
Step S1
Step S2
Step S3
Step S4
Detailed Description
The invention will now be more fully described by way of example only and with reference to the accompanying drawings, but the invention is not thereby limited to the scope of the examples described.
Example 1
As shown in fig. 1-3, this embodiment discloses a trigeminal balloon catheter, which comprises a catheter 1 and a balloon connected to one end of the catheter 1, wherein the balloon comprises an outer balloon 2 and three inner balloons 3 arranged in the outer balloon 2, a plurality of lumens 11 are arranged in the catheter 1, the distal ends of the lumens 11 are communicated with the outer balloon 2 and the inner balloons 3 one by one, and the proximal ends of the lumens 11 are connected with different injection devices through the catheter 1. Wherein the end of the instrument closer to the operator is defined herein as the proximal end and the end farther from the operator is defined herein as the distal end. The lumen 11 is used for filling or discharging filling medium into the corresponding external balloon 2 or the internal balloon 3, so that the external balloon 2 and the internal balloon 3 are combined to form different filling shapes and pressures, the different filling shapes and pressures flexibly match the requirements of different tissue structures of the lesion parts when the trigeminal nerve semilunar node is pressed, the directionality of the balloon for providing pressure for the lesion parts is improved, the targeted compression treatment is carried out on the semilunar node, and the treatment effect is improved.
In order to facilitate accurate delivery of the balloon to the treatment site, the lumen 11 is further provided therein with a mounting channel 12 extending in the same direction as the lumen 11, and the mounting channel 12 is used for mounting a support member (not shown in the figure), so that the catheter 1 has a certain rigidity, and is convenient for delivering the balloon at the distal end of the trigeminal nerve balloon catheter to the treatment site, thereby increasing the maneuverability. In this embodiment, the support is a steel wire having both rigidity and flexibility. In other alternative embodiments, the support member may be made of a non-metallic material.
In this embodiment, as shown in fig. 1, since three inner balloons 3 and one outer balloon 2 are provided, the pressure between each inner balloon 3 and each outer balloon 2 can be set to be the same or different, and the pressure of each balloon can be adaptively adjusted according to the tissue structure of the treatment part, so as to meet different pressure requirements of the treatment part, and the high pressure or the low pressure can be sequentially flushed into different balloons for the treatment requirement of the lesion part, i.e. the high pressure is firstly performed and then the low pressure is performed or the high pressure is firstly performed and then the high pressure is performed, so that the shape and the pressure which are adjusted in real time can be provided for the treatment part, and the diversified requirements in the operation can be met.
Wherein the filling medium may be a gas or a liquid. The filling medium of gas or liquid facilitates filling or draining of different balloons as required. Since the gas has a certain compression ratio, by charging different amounts of gas, a more accurate pressure value gradually increasing or decreasing can be provided to the lesion.
In this embodiment, the filling medium is a contrast agent, and the contrast agent is visible under the X-ray, so that a doctor can observe and operate in the operation conveniently, and the accuracy of the operation is improved.
In this embodiment, the outer balloon 2 has elasticity. Because the outer sacculus 2 wraps the inner sacculus 3, under the condition that all sacculus is not filled with filling medium, the outer sacculus 2 made of elastic materials enables all sacculus to be attached to the outer wall of the catheter 1 and ensures that the outer part of the whole sacculus is smooth and easy to push, so that the sacculus has better compliance, and the sacculus catheter can be conveniently put into the port of the Maishi capsule through the sheath tube after puncture so as to accurately reach the treatment position. Simultaneously, the outer balloon 2 of elastic material is with the increase of filling medium, and the volume can be constantly expanded to the tissue inner wall of treatment position is laminated better.
In the present embodiment, the inner balloon 3 has no elasticity. Since the inner balloon 3 is disposed inside the outer balloon 2, after the inner balloon 3 is filled with the filling medium, the inner pressure gradually increases with the increase of the filling medium, so that a higher pressure value can be provided to the treatment site. If the inner balloon 3 has elasticity, the volume thereof is continuously expanded as the filling medium increases, and the outer balloon 2 may be ruptured.
Preferably, the internal pressure that the internal balloon 3 can withstand is not less than the internal pressure that the external balloon 2 can withstand, in order to provide different pressure values. The inflation medium of the inner balloon 3 provides a higher pressure value for the treatment site than the outer balloon 2, and the inflation medium of the outer balloon 2 provides a lower pressure value for the treatment site than the inner balloon 3, which is convenient for selection according to the treatment needs.
In this embodiment, the external balloon 2 can withstand an internal pressure in the range of 600-1000 mmHg, which can meet the need for a relatively low pressure value for most trigeminal treatments. The internal balloon 3 can bear an internal pressure ranging from 1000mmHg to 1300mmHg, and can meet the requirement of relatively high pressure values in the treatment of the trigeminal nerve for the most part.
The size of the outer balloon 2 and the inner balloon 3 and the pressure range can be customized according to the needs of users.
As shown in fig. 4, this embodiment also discloses a method for using the trigeminal balloon catheter as described above, which includes the following steps:
step S1, under X-ray perspective monitoring, firstly, a puncture needle and a sheath tube are punctured into a half-moon of a trigeminal nerve;
s2, withdrawing the puncture needle, retaining a sheath tube at the puncture part, and placing the trigeminal balloon catheter into the port of the Mahalanobis balloon through the sheath tube;
step S3, filling media are filled into or discharged from the outer balloon 2 and/or the inner balloon 3, so that the outer balloon 2 and the inner balloon 3 are combined to form different filling shapes and pressures to flexibly match the requirements of different tissue structures when the trigeminal ganglion is pressed;
and S4, evacuating the contrast medium of the outer balloon 2 and the inner balloon 3 after the operation and retracting the trigeminal balloon catheter, and then performing short-time compression hemostasis on the operation point.
In step S3, according to the shapes of different tissue structures of the ports of the patient 'S mciro' S sac, the inner balloon 3 and/or the outer balloon 2 are respectively filled with filling medium or discharged from filling medium, so that the filled inner balloon 3 and the filled outer balloon 2 are combined to form different filling shapes and pressures, the different filling shapes and pressures flexibly match the requirements of different tissue structures when the trigeminal nerve half-moon is pressed, thereby adaptively pressing the trigeminal nerve half-moon, releasing the clamping pressure on nerve fibers which cause trigeminal neuralgia, and causing structural damage on the nerve fibers through the expansion and pressing of the balloons, thereby performing targeted treatment on different nerve root fibers of the trigeminal neuralgia, and playing a role in treating the trigeminal neuralgia.
When high pressure is required at the target site of expansion, the inner balloon 3, which is relatively high in pressure, may be inflated first, followed by inflation of the outer balloon 2, which is relatively low in pressure. When the target expansion part needs to be expanded at low pressure and then expanded at local high pressure, the external balloon 2 with relatively low pressure can be filled first, and when the target expansion part meets the requirement, the internal balloon 3 with relatively high pressure is filled, and the whole treatment process can be completed only by adjusting the opening sequence of the balloons. The entire procedure is typically completed within 15 minutes. Thus, the trouble of changing different balloons in treatment and iatrogenic injury to patients are reduced, and the operation cost is correspondingly reduced.
Compared with the prior art, the trigeminal nerve balloon catheter provided by the invention is used for treatment only by puncture, has small wound, can keep the touch sense of the face, is simple and convenient to operate, has high safety and few complications, can enable a patient to comfortably complete operation under general anesthesia, reduces the pain of the patient, and is a preferred scheme for the elderly or patients with serious system diseases and cannot tolerate major operations.
The trigeminal balloon catheter provided by the invention is provided with a plurality of balloons at the same time, the plurality of balloons can be set to high and low pressure values according to the needs of users, different balloon pressures can be provided, and the trigeminal balloon catheter is applicable to different lesion parts. The compression mode after entering the human body formed by the inner balloon 3 and the outer balloon 2 is various, the effect is various, different tissue structures of a patient can be adapted, the pressure of the balloon can be adaptively adjusted according to the different tissue structures, the application range is wide, the applicability is strong, and the treatment effect is good.
Because the balloon catheter can provide various filling shapes and pressures at the treatment part of a patient, different filling shapes can apply different pressures from multiple directions, the effect is remarkable, the pressing force is more accurate, and the pressing effect on the trigeminal nerve semilunar node is good.
Example 2
This embodiment is substantially the same as embodiment 1 except that: the number of the internal sacculus can be set to be one, two or more than three, and the internal pressure value which can be born by each internal sacculus is set to be different, so that the trigeminal sacculus catheter can provide a wide range of pressure values, thereby meeting the different pressure value requirements of a treatment part and improving the treatment effect. And, a plurality of inside sacculus are arranged adjacently in proper order along the extending direction of pipe to obtain the preferred filling shape.
Example 3
As shown in fig. 5, this embodiment is substantially the same as embodiment 1, except that: the multiple inner balloons are arranged in two rows and are sequentially adjacent to each other along the extending direction of the catheter, and more balloons can be arranged under the condition of smaller volume so as to obtain various filling shapes and improve the treatment effect. In an alternative embodiment, the multiple inner balloons may be arranged in two or more rows and sequentially disposed adjacent to each other along the extending direction of the catheter, so as to obtain various filling shapes and improve the therapeutic effect.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (6)
1. A trigeminal balloon catheter comprising a catheter and a balloon attached to a distal end of the catheter, the balloon comprising an outer balloon and at least two inner balloons disposed within the outer balloon, the outer balloon having elasticity; the inner balloon is not elastic; a plurality of cavity tubes are arranged in the catheter, and the cavity tubes are communicated with the outer balloon and the inner balloon in a one-to-one correspondence manner; the lumen is used for filling or discharging filling media into or from the corresponding external balloon or the internal balloon, so that the external balloon and the internal balloon are combined to form different filling shapes and pressures;
the inner balloons are arranged adjacently in sequence along the extending direction of the catheter;
the internal pressure that the internal balloon can withstand is not less than the internal pressure that the external balloon can withstand;
each of the internal balloons is capable of withstanding different internal pressure values;
when the target expansion part needs high pressure, the inner balloon with relatively high pressure is filled first, the outer balloon with relatively low pressure is filled again, when the target expansion part needs low pressure expansion and then local high pressure expansion, the outer balloon with relatively low pressure is filled first, and when the target expansion part meets the requirement, the inner balloon with relatively high pressure is filled again.
2. A trigeminal balloon catheter comprising a catheter and a balloon attached to a distal end of the catheter, the balloon comprising an outer balloon and at least two inner balloons disposed within the outer balloon, the outer balloon having elasticity; the inner balloon is not elastic; a plurality of cavity tubes are arranged in the catheter, and the cavity tubes are communicated with the outer balloon and the inner balloon in a one-to-one correspondence manner; the lumen is used for filling or discharging filling media into or from the corresponding external balloon or the internal balloon, so that the external balloon and the internal balloon are combined to form different filling shapes and pressures;
the inner balloons are arranged in more than two rows and are sequentially and adjacently arranged along the extending direction of the catheter;
the internal pressure that the internal balloon can withstand is not less than the internal pressure that the external balloon can withstand;
each of the internal balloons is capable of withstanding different internal pressure values;
when the target expansion part needs high pressure, the inner balloon with relatively high pressure is filled first, the outer balloon with relatively low pressure is filled again, when the target expansion part needs low pressure expansion and then local high pressure expansion, the outer balloon with relatively low pressure is filled first, and when the target expansion part meets the requirement, the inner balloon with relatively high pressure is filled again.
3. The trigeminal balloon catheter of claim 1 or 2, wherein the filling medium is a gas or a liquid.
4. The trigeminal balloon catheter of claim 3, wherein the filling medium is a contrast agent.
5. The trigeminal balloon catheter of claim 1 or 2, wherein the external balloon is capable of withstanding an internal pressure in the range of 600 to 1000mmHg.
6. The trigeminal balloon catheter of claim 1 or 2, wherein the internal balloon is capable of withstanding an internal pressure in the range of 1000 to 1300mmHg.
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| CN114404788A (en) | 2022-04-29 |
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