CN218009936U - Balloon catheter for cryoablation - Google Patents
Balloon catheter for cryoablation Download PDFInfo
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- CN218009936U CN218009936U CN202122978939.3U CN202122978939U CN218009936U CN 218009936 U CN218009936 U CN 218009936U CN 202122978939 U CN202122978939 U CN 202122978939U CN 218009936 U CN218009936 U CN 218009936U
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- cryoablation
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Abstract
The utility model relates to a sacculus pipe for cryoablation, when the sacculus was the expanded state, the sacculus had at least one intercommunication passageway that is used for circulating gaseous medium or liquid medium along the axial of distal end to the near-end. After the balloon catheter of the utility model is expanded and adhered to tissues, the cryoablation of the inner circumference of the airway (the ultralow temperature of the adhered part can be conducted to the non-adhered part to ablate the whole circumference of the lumen tract) can be realized, and the communicating channel can ventilate while the cryoablation is carried out, so that the lung function can not be influenced; and because the contact area of the sacculus and the tissue is smaller than that of the complete circumference of the sacculus, after freezing is finished, the sacculus can be separated from the tissue more quickly, thawing (rewarming) is quicker, and the airway is completely recovered to be smooth and quicker.
Description
Technical Field
The utility model relates to a cryoablation technical field especially relates to a sacculus pipe for cryoablation.
Background
In recent years, minimally invasive surgery (NOTES) using a body cavity structure is becoming more and more widely used, and natural orifice endoscopic surgery (NOTES) refers to endoscopic surgery performed by using a flexible endoscope to enter various body cavities such as an abdominal cavity, a thoracic cavity and the like through natural orifices such as an oral cavity, an esophagus, a stomach, a colorectal cavity, a vagina, a bladder and the like. NOTES has the unique advantages of no scar on skin, light postoperative pain, small wound, long operation time, quick recovery, more minimally invasive, attractive appearance, high safety and the like, and indicates a new direction for the future development of minimally invasive surgery.
Cryoablation refers to a method for in-situ inactivation of solid tissues by freezing pathological tissues through a low-temperature technology, and has the action principle that cells are destroyed by rapidly cooling the pathological tissues through low temperature to cause cell necrosis or apoptosis, so that the treatment purpose is achieved. Cryoablation is a commonly used interventional technique in NOTES surgery. Due to the therapeutic principle of cryoablation, the application of the cryoablation in the natural orifice of the human body has high safety, small stimulation and damage to the orifice wall tissue and difficult occurrence of complications such as fistula or stenosis. Cryoablation is used under the guidance of an endoscope, is a minimally invasive treatment mode, and is increasingly used.
The lung is the only respiratory organ of the human body, and has two main functions: the first is ventilation and the second is ventilation, which is located in the chest cavity, one on the left and the other on the right, and covers the heart. The lung has five lobes, three on the left and two on the right. The lung is a closed organ, and peripheral lesions such as benign and malignant airway stenosis often occur in the lung, and the airway often needs to be treated in a peripheral way, such as conventional balloon dilatation for airway stenosis treatment. The cryoablation is widely applied to the air passage, when the cryoablation is carried out in the lung and the air passage is sealed around the balloon, the time for sealing the air passage needs to be strictly controlled, the risk of suffocation of a patient is prevented, the air passage is kept smooth as soon as possible, but some operations need to carry out cryoablation for a certain time, the temperature can be conducted to the required part, and a better ablation treatment effect is achieved.
It is therefore desirable to design a cryoablation device that still allows ventilation in the lungs during the closing of the airway and cryoablation procedure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the defects in the prior art and provides a balloon catheter for cryoablation.
In order to achieve the purpose, the utility model adopts the technical proposal that:
a balloon catheter for cryoablation is provided, comprising: a balloon, a catheter, and a handle, the balloon comprising: an expanded state and a compressed state, the catheter comprising: an inlet line for releasing refrigerant and a return line for returning said refrigerant, said handle comprising: the air inlet joint is fixedly connected with the near end of the air inlet pipeline, and the air return joint is fixedly connected with the near end of the air return pipeline; the far end of the air inlet pipeline is fixedly connected with the far end of the balloon, an opening is formed in the air inlet pipeline positioned in the balloon, and the far end of the air return pipeline is fixedly connected with the near end of the balloon;
when the balloon is in the expanded state, the balloon is provided with at least one communication channel for communicating a gas medium or a liquid medium along the axial direction from the far end to the near end.
Preferably, the balloon comprises: the balloon is provided with a plurality of convex parts which are arranged on the circumference of the balloon along the axial direction of the balloon and are used for being attached to lesion tissues, and a plurality of concave parts which are arranged on the circumference of the balloon along the axial direction of the balloon and are used for forming the communication channel.
Further, the section of the balloon is in a shape of valve leaflet or gear; or the balloon is a unilateral balloon.
Preferably, the balloon comprises: the plurality of spacing blocks are axially arranged on the circumference of the balloon along the balloon, and the communicating channel is formed by the gap between every two adjacent spacing blocks.
Further, the spacing block is of a hollow structure.
Preferably, the balloon comprises: the plurality of flow guide blocks are arranged on the circumference of the balloon along the axial direction of the balloon or/and the radial direction of the balloon, and the communicating channel is formed by the gap between every two adjacent flow guide blocks.
Preferably, the balloon comprises: the balloon is characterized by comprising a plurality of limiting blocks which are uniformly arranged along the axial direction of the balloon, the far ends of the limiting blocks are fixedly connected with the far end of the balloon, the near ends of the limiting blocks are fixedly connected with the near end of the balloon, and gaps formed by the balloon at the limiting blocks are the communication channels.
Preferably, the balloon comprises: a plurality of unilateral balloons, the unilateral balloons comprising: axle center pipe and locate the expansion part of axle center pipe one side, it is a plurality of the distal end of air inlet pipe is with a plurality of the distal end fixed connection of unilateral sacculus, and be located a plurality of the unilateral sacculus is inside a plurality of be equipped with a plurality of openings on the air inlet pipe, the distal end of return air pipeline respectively with a plurality of the near-end fixed connection of unilateral sacculus, it is a plurality of the expansion part with the axle center evenly distributed of return air pipeline is on supposition circumference, adjacent two the clearance of expansion part forms intercommunication passageway.
Preferably, the balloon comprises: the spiral block is spirally arranged on the circumference of the balloon, and a spiral communication channel is formed in the gap of the spiral block.
The utility model adopts the above technical scheme, compare with prior art, have following technological effect:
after the balloon catheter of the utility model is expanded and adhered to tissues, the cryoablation of the inner circumference of the airway (the ultralow temperature of the adhered part can be conducted to the non-adhered part to ablate the whole circumference of the lumen tract) can be realized, and the communicating channel can ventilate while the cryoablation is carried out, so that the lung function can not be influenced; and because the contact area of the sacculus and the tissue is smaller than that of the complete circumference of the sacculus, after freezing is finished, the sacculus can be separated from the tissue more quickly, thawing (rewarming) is quicker, and the airway is completely recovered to be smooth and quicker.
Drawings
Fig. 1 is a schematic front view of the balloon catheter of the present invention;
fig. 2 is a schematic cross-sectional structural view of the middle balloon catheter of the present invention;
fig. 3 is a schematic front view of a balloon in embodiment 1 of the present invention;
fig. 4 is a schematic cross-sectional view of a balloon in embodiment 1 of the present invention;
fig. 5 is a schematic front view of another balloon in embodiment 1 of the present invention;
fig. 6 is a schematic cross-sectional view of another balloon in embodiment 1 of the present invention;
fig. 7 is a schematic front view of another balloon in embodiment 1 of the present invention;
fig. 8 is a schematic cross-sectional view of another balloon in embodiment 1 of the present invention;
fig. 9 is a schematic front view of a balloon in embodiment 2 of the present invention;
fig. 10 is a schematic cross-sectional view of a balloon in embodiment 2 of the present invention;
fig. 11 is a schematic cross-sectional view of another balloon in embodiment 2 of the present invention;
fig. 12 is a schematic front view of a balloon in embodiment 3 of the present invention;
fig. 13 is a schematic front view of a balloon in embodiment 4 of the present invention;
fig. 14 is a schematic cross-sectional view of a balloon in embodiment 4 of the present invention;
fig. 15 is a schematic front view of a balloon in embodiment 5 of the present invention;
fig. 16 is a schematic front view of a balloon in embodiment 6 of the present invention;
wherein the reference numerals include:
a balloon 1; a spacer block 11; a flow guide block 12; a limiting block 13; a unilateral balloon 14; a hub tube 141; a flared portion 142; a screw block 15; a conduit 2; an intake line 21; a return gas line 22; a handle 3; an air intake joint 31; a return air connection 32.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Example 1
The present embodiment provides a balloon catheter for cryoablation, as shown in fig. 1, including: a balloon 1, a catheter 2 and a handle 3, the balloon 1 comprising: in the expanded state and in the compressed state, as shown in fig. 2, the catheter 2 comprises: an inlet line 21 for releasing refrigerant and a return line 22 for returning said refrigerant, said handle 3 comprising: an air inlet joint 31 fixedly connected with the proximal end of the air inlet pipeline 21 and an air return joint 32 fixedly connected with the proximal end of the air return pipeline 22;
the far end of the air inlet pipeline 21 is fixedly connected with the far end of the sacculus 1, an opening is formed in the air inlet pipeline 21 inside the sacculus 1, the far end of the air return pipeline 22 is fixedly connected with the near end of the sacculus 1, and after being released in the sacculus 1, refrigerant exchanges heat with the adhered tissue and flows back through the air return pipeline 22 to realize continuous circulation of the refrigerant in the sacculus 1;
wherein the balloon 1 comprises: the balloon 1 is provided with a plurality of convex parts which are axially arranged on the circumference of the balloon 1 and are used for being attached to lesion tissues and a plurality of concave parts which are axially arranged on the circumference of the balloon 1 and are used for forming a communication channel, when the balloon 1 is in the expanded state, the balloon 1 is provided with at least one communication channel for flowing gas media or liquid media along the axial direction from the far end to the near end.
As a preferred embodiment, as shown in fig. 3 to 4, the section of the balloon 1 is in the shape of "leaflet", and the balloon has a large ventilation space, a simple shape, and is easy to realize, but the uniformity of freezing is insufficient.
As another preferred embodiment, as shown in fig. 5-6, the section of the balloon 1 is in a shape of "gear", so that the refrigerant is diffused more uniformly, i.e. the temperature on the surface of the balloon is more uniform, the freezing is more uniform, the ablation effect is better, and the plurality of communication channels are more convenient to ventilate.
As a further preferred embodiment, as shown in fig. 7-8, the balloon 1 is a one-sided balloon, which allows for smoother ventilation and more thorough freezing of the site.
Therefore, the purpose of maintaining the ventilation of the lung in the cryoablation process can be realized by changing the shape of the saccule 1, the structure is simple and convenient, but the process of the heterosexual saccule is more complex, so that the difficulty of the integral realization is higher.
Example 2
The present embodiment provides another balloon catheter for cryoablation, which is different from embodiment 1 in that, as shown in fig. 9 to 10, the balloon 1 includes: the plurality of spacing blocks 11 are axially arranged on the circumference of the balloon 1 along the balloon 1, the communicating channel is formed by the gaps between every two adjacent spacing blocks 11, and the spacing blocks 11 are directly contacted with lesion tissues so as to freeze and ablate the lesion tissues; different numbers of spacing blocks 11 can be arranged according to the needs, when the number is large, the freezing temperature is uniform, the freezing effect is better and more thorough, and when the number is small, the process is simpler; the spacing blocks 11 can also be non-uniformly distributed on the circumference of the saccule 1, the areas distributed with the spacing blocks 11 can realize the maintenance of ventilation, other areas can realize more thorough freezing, and the treatment effect is better; the setting of spacer 11 can also increase the rigidity of sacculus 1, and the expanding force and the expansion effect of sacculus 1 are still better promptly, have better treatment to the narrow of air flue.
As a preferred embodiment, as shown in fig. 11, the spacer 11 is a hollow structure, the substantial part of the spacer 11 can rapidly transmit ultra-low temperature, conduct heat with tissue, and conduct temperature to non-contact tissue to realize circumferential ablation, and the hollow part can also ventilate, thereby increasing ventilation efficiency and achieving better ventilation effect.
Example 3
The present embodiment provides another balloon catheter for cryoablation, which is different from embodiment 1 in that, as shown in fig. 12, the balloon 1 includes: a plurality of flow guide blocks 12 are arranged on the circumference of the balloon 1 along the axial direction of the balloon 1 or/and the radial direction of the balloon 1, the communicating channel is formed by the gap between two adjacent flow guide blocks 12, the flow guide blocks 12 are uniformly or non-uniformly arranged on the circumference or part of the circumference of the balloon 1, and the formed ventilation gap has the effect similar to that of embodiment 2; in addition, the flow guide block 12 also forms a plurality of channels in the radial direction, so that ventilation is more convenient to carry out, and the ventilation effect is better; the setting of water conservancy diversion piece 12 also can increase sacculus 1's rigidity, and compare in embodiment 2's spacer 11, sacculus 1's axial flexibility is better, be convenient for through narrow pathological change position, trafficability characteristic is better, it is little to the folding performance influence of sacculus, it is more convenient to operate, and sacculus 1 still less with the area of contact of tissue, after freezing the completion, the sacculus can be faster with tissue separation, it is faster to unfreeze (rewarming), faster recovery air flue is unobstructed completely.
Example 4
The present embodiment provides another balloon catheter for cryoablation, which is different from embodiment 1 in that, as shown in fig. 13 to 14, the balloon 1 includes: the balloon 1 is provided with a plurality of limiting blocks 13 which are uniformly arranged along the axial direction of the balloon 1, the far ends of the limiting blocks 13 are fixedly connected with the far end of the balloon 1, the near ends of the limiting blocks 13 are fixedly connected with the near end of the balloon 1, a gap formed by the balloon 1 at the limiting blocks 13 is the communicating channel, when the balloon 1 is expanded, the limiting blocks 13 limit the cross section of the balloon 1, the cross section of the balloon 1 is in a petal shape, the communicating channel is larger in the freezing process, the ventilation effect is better, the limiting blocks 13 are more convenient for the folding of the balloon 1, the permeability in the compressed state is better, the integral rigidity of the balloon part is enhanced, after the freezing is finished, the balloon can be separated from tissues more quickly, the thawing (rewarming) is quicker, and the airway 3 can be recovered more quickly and completely unobstructed.
Example 5
The present embodiment provides another balloon catheter for cryoablation, which is different from embodiment 1 in that, as shown in fig. 15, the balloon 1 includes: a plurality of unilateral balloons 14, the unilateral balloons comprising: the far ends of the air inlet pipelines 21 are fixedly connected with the far ends of the unilateral balloons 14, the openings are formed in the air inlet pipelines 21 positioned in the unilateral balloons 141, the far ends of the air return pipelines 22 are respectively fixedly connected with the near ends of the unilateral balloons 14, the expansion parts 142 are uniformly distributed on an assumed circumference by the axis of the air return pipeline 22, the communicating channel is formed by the gaps of the two adjacent expansion parts 142, the communicating channel is large and good in ventilation effect, different numbers of the unilateral balloons 14 can be arranged according to the requirements of clinical operations, the more the number is, the better the uniformity of the freezing of the airway cavity is, the better the ventilation effect is when the number is small, but the overall structure of the balloon 1 is complex, the air inlet pipelines 21 are respectively and independently arranged on the unilateral balloons 14, the air airway pressure and the refrigeration capacity can be distinguished, for example, the air airway pressure and refrigeration capacity can be controlled by attaching the cartilage ring ablation part (the cartilage ring ablation part is not arranged on the circumferential structure, the cartilage ring side is thinner, the cartilage ring side is torn, the cartilage ring ablation part is more easily, the puncture hole position is easier, and the accuracy of the air duct pressure and the accuracy can be controlled.
Example 6
The present embodiment provides another balloon catheter for cryoablation, which is different from embodiment 1 in that, as shown in fig. 16, the balloon 1 includes: the spiral block 15 is spirally arranged on the circumference of the balloon 1, and the spiral communication channel is formed in the gap of the spiral block 15, so that the function of maintaining ventilation can be realized, and the airway lumen can be ablated more uniformly.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope and embodiments of the present invention, and it should be appreciated by those skilled in the art that various equivalent and obvious modifications can be made in the present invention and the description and drawings, and all such modifications are intended to be included within the scope and spirit of the present invention.
Claims (9)
1. A balloon catheter for cryoablation, comprising: balloon (1), catheter (2) and handle (3), balloon (1) includes: an expanded state and a compressed state, the catheter (2) comprising: -an inlet line (21) for releasing refrigerant and-a return line (22) for returning said refrigerant, said handle (3) comprising: an air inlet joint (31) fixedly connected with the near end of the air inlet pipeline (21) and an air return joint (32) fixedly connected with the near end of the air return pipeline (22); the balloon inflation device is characterized in that the far end of the air inlet pipeline (21) is fixedly connected with the far end of the balloon (1), an opening is formed in the air inlet pipeline (21) positioned in the balloon (1), and the far end of the air return pipeline (22) is fixedly connected with the near end of the balloon (1);
wherein, when the balloon (1) is in the expanded state, the balloon (1) is provided with at least one communication channel for the circulation of gas medium or liquid medium along the axial direction from the far end to the near end.
2. The balloon catheter according to claim 1, characterized in that the balloon (1) comprises: the balloon is characterized in that the balloon is provided with a plurality of convex parts which are axially arranged on the circumference of the balloon (1) along the balloon (1) and used for being attached to lesion tissues, and a plurality of concave parts which are axially arranged on the circumference of the balloon (1) along the balloon (1) and used for forming the communication channel.
3. The balloon catheter according to claim 2, characterized in that the cross section of the balloon (1) is "leaflet" or "gear" shaped; or the balloon (1) is a unilateral balloon.
4. The balloon catheter according to claim 1, characterized in that the balloon (1) comprises: the plurality of spacing blocks (11) are axially arranged on the circumference of the balloon (1) along the balloon (1), and the gap between every two adjacent spacing blocks (11) forms the communication channel.
5. The balloon catheter according to claim 4, characterized in that the spacer block (11) is a hollow structure.
6. The balloon catheter according to claim 1, wherein the balloon (1) comprises: the flow guide blocks (12) are arranged on the circumference of the balloon (1) along the axial direction of the balloon (1) or/and the radial direction of the balloon (1), and the communication channel is formed by the gap between every two adjacent flow guide blocks (12).
7. The balloon catheter according to claim 1, wherein the balloon (1) comprises: a plurality of limiting blocks (13) which are uniformly arranged along the axial direction of the balloon (1), the far ends of the limiting blocks (13) are fixedly connected with the far end of the balloon (1), the near ends of the limiting blocks (13) are fixedly connected with the near end of the balloon (1), and the gap formed by the balloon (1) at the limiting blocks (13) is the communication channel.
8. The balloon catheter according to claim 1, wherein the balloon (1) comprises: a plurality of unilateral balloons (14), the unilateral balloons comprising: axle heart pipe (141) and locate expansion portion (142) of axle heart pipe (141) one side, it is a plurality of the distal end of air inlet pipeline (21) and a plurality of the distal end fixed connection of unilateral sacculus (14), and be located a plurality of unilateral sacculus (14) are inside a plurality of be equipped with a plurality of openings on air inlet pipeline (21), the distal end of return air pipeline (22) respectively with a plurality of the near-end fixed connection of unilateral sacculus (14), it is a plurality of expansion portion (142) with the axle center evenly distributed of return air pipeline (22) is on supposing the circumference, adjacent two the clearance of expansion portion (142) forms the intercommunication passageway.
9. The balloon catheter according to claim 1, wherein the balloon (1) comprises: the spiral block (15) is spirally arranged on the circumference of the balloon (1), and a spiral communication channel is formed in the gap of the spiral block (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122978939.3U CN218009936U (en) | 2021-11-30 | 2021-11-30 | Balloon catheter for cryoablation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122978939.3U CN218009936U (en) | 2021-11-30 | 2021-11-30 | Balloon catheter for cryoablation |
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| Publication Number | Publication Date |
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| CN218009936U true CN218009936U (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202122978939.3U Active CN218009936U (en) | 2021-11-30 | 2021-11-30 | Balloon catheter for cryoablation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116898558A (en) * | 2023-06-26 | 2023-10-20 | 苏州海宇新辰医疗科技有限公司 | Balloon catheter for cardiac cryoablation |
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2021
- 2021-11-30 CN CN202122978939.3U patent/CN218009936U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116898558A (en) * | 2023-06-26 | 2023-10-20 | 苏州海宇新辰医疗科技有限公司 | Balloon catheter for cardiac cryoablation |
| CN116898558B (en) * | 2023-06-26 | 2024-04-30 | 苏州海宇新辰医疗科技有限公司 | Balloon catheter for cardiac cryoablation |
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