CN220327783U - Three-layer balloon dilation catheter - Google Patents
Three-layer balloon dilation catheter Download PDFInfo
- Publication number
- CN220327783U CN220327783U CN202321342292.8U CN202321342292U CN220327783U CN 220327783 U CN220327783 U CN 220327783U CN 202321342292 U CN202321342292 U CN 202321342292U CN 220327783 U CN220327783 U CN 220327783U
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- Prior art keywords
- tube
- balloon
- catheter
- pressurizing
- sealing
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- 230000010339 dilation Effects 0.000 title claims description 24
- 239000003814 drug Substances 0.000 claims abstract description 93
- 238000002347 injection Methods 0.000 claims abstract description 53
- 239000007924 injection Substances 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 53
- 229940079593 drug Drugs 0.000 claims description 30
- 210000005077 saccule Anatomy 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 229920002614 Polyether block amide Polymers 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 238000012377 drug delivery Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 210000004204 blood vessel Anatomy 0.000 description 10
- 230000003902 lesion Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 210000000056 organ Anatomy 0.000 description 5
- 239000003146 anticoagulant agent Substances 0.000 description 4
- 208000031481 Pathologic Constriction Diseases 0.000 description 3
- 238000002399 angioplasty Methods 0.000 description 3
- 230000000702 anti-platelet effect Effects 0.000 description 3
- 230000036262 stenosis Effects 0.000 description 3
- 208000037804 stenosis Diseases 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000012982 microporous membrane Substances 0.000 description 2
- 239000000106 platelet aggregation inhibitor Substances 0.000 description 2
- 208000037803 restenosis Diseases 0.000 description 2
- 208000007536 Thrombosis Diseases 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 230000004663 cell proliferation Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000916 dilatatory effect Effects 0.000 description 1
- 206010020718 hyperplasia Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 210000000329 smooth muscle myocyte Anatomy 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 210000003556 vascular endothelial cell Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model provides a three-layer sacculus inflation pipe, including the pipe main part and install the inflation sacculus in the pipe main part outside, the inside pressurization passageway that is used for pressurizing the inflation sacculus that is equipped with of pipe main part, the sealed parcel has outer sacculus in inflation sacculus external seal, form sealed medicine chamber between outer sacculus and the inflation sacculus, the intercommunication has medicine injection passageway and play medicine hole on the medicine chamber, medicine injection passageway extends the setting to pipe main part proximal end, it sets up on outer sacculus to go out the medicine hole, the pipe main part inboard still is equipped with the seal wire passageway, the inner tube with seal wire passageway sealing connection is installed to the distal end of pipe main part, the pipe main part includes the outer tube, be located the pressure pipe of outer tube, be located the seal wire pipe of outer tube and be located the injection pipe of outer tube, the inside pressurization passageway that forms of pressure pipe, the inside seal wire passageway that forms of seal wire pipe, the inside formation of inner tube and seal wire pipe annotate the medicine passageway.
Description
Technical Field
The utility model relates to the field of interventional medical instruments, in particular to a three-layer balloon dilation catheter.
Background
The balloon catheter is a tool for endovascular angioplasty, the wall of a narrow blood vessel is physically supported and expanded through the expansion of a balloon cavity at the distal end of the balloon catheter, after the expansion of a narrow focus is completed, the pressure of the balloon cavity is removed, the balloon catheter is withdrawn from the blood vessel cavity, and the reconstruction of the blood vessel is completed. However, 30-50% of patients after angioplasty have restenosis due to abnormal vascular endothelial cell injury, which results in abnormal intimal hyperplasia and excessive smooth muscle cell proliferation.
In the prior art, a drug stent or a drug balloon is generally adopted for further treatment: 1. the medicine rack is coated with slow released medicine on the surface of the metal rack and the rack is supported inside blood vessel for long period to solve the problem of restenosis after forming operation. For most heart vessel stenosis requiring a stent, the balloon is used for dilating the stenosis in the first step, the stent is implanted in the second step (the stent is also supported by the balloon of the stent), and one balloon is used again in the third step, so that the stent is better attached to the inner wall of the vessel and the bleeding and thrombus are prevented. Moreover, in order to avoid coagulation of blood on the stent inner layer surface, patients must take antiplatelet and anticoagulant drugs for a long period of time after performing angioplasty; 2. the medicine saccule expands the catheter, and the medicine is coated on the surface of saccule, so that the saccule expands narrow blood vessel and sends medicine to lesion site to repair damaged blood vessel. However, in order to better retain the drug from the balloon before inflation, the drug balloon needs to be pre-inflated fully by conventional balloon before using the drug coated balloon, which is not only cumbersome, but also requires multiple catheters for the same lesion, increasing the economic burden of the patient.
Disclosure of Invention
The utility model aims to solve the problems in the prior art, and provides a three-layer balloon dilation catheter which does not need to be additionally expanded by a balloon during operation, does not need a plurality of catheters for the same lesion, reduces operation time, reduces economic burden of a patient, and does not need to take anti-platelet and anticoagulant drugs after operation.
The utility model solves the technical problems by adopting the technical scheme that: the three-layer balloon dilation catheter comprises a catheter main body and a dilation balloon arranged on the outer side of the catheter main body, wherein a pressurizing channel for pressurizing the dilation balloon is arranged in the catheter main body, an outer balloon is sealed and wrapped outside the dilation balloon, a sealed medicine cavity is formed between the outer balloon and the dilation balloon, a medicine injection channel and a medicine outlet are communicated with the medicine cavity, the medicine injection channel extends towards the proximal end of the catheter main body, and the medicine outlet is formed in the outer balloon.
Preferably, the inner side of the catheter main body is also provided with a guide wire channel, and the distal end of the catheter main body is provided with an inner tube which is connected with the guide wire channel in a sealing way.
Preferably, two ends of the expansion balloon are connected with the outer side of the inner tube in a sealing way, and two ends of the outer balloon are connected with the outer side of the inner tube in a sealing way.
Preferably, both ends of the expansion balloon are connected with the outer side of the inner tube in a sealing way, and both ends of the outer balloon are connected with the balloon wall on the outer side of the expansion balloon in a sealing way.
Preferably, the catheter body comprises an outer tube, a pressurizing tube positioned in the outer tube, a wire guide tube positioned in the outer tube and a medicine injection tube positioned in the outer tube, wherein a pressurizing channel is formed in the pressurizing tube, a wire guide channel is formed in the wire guide tube, the inner tube is in sealing connection with the wire guide tube, and a medicine injection channel is formed in the medicine injection tube.
Preferably, a sealing baffle plate which is connected with the outer sides of the pressurizing tube, the guide wire tube and the medicine injection tube in a sealing way is arranged on the inner side of the distal end of the outer tube.
Preferably, one end of the expansion balloon is connected with the outer side of the inner tube in a sealing way, the other end of the expansion balloon is connected with the sealing baffle in a sealing way and wraps the distal end opening of the pressurizing tube, one end of the outer balloon is connected with the outer side of the inner tube in a sealing way, and the other end of the expansion balloon is connected with the sealing baffle or the outer tube in a sealing way and wraps the distal end opening of the medicine injection tube.
Preferably, the wire guide tube is positioned at the center of the outer tube, the pressurizing tube and the medicine injection tube are respectively and uniformly arranged around the wire guide tube at intervals, and the pressurizing tube and the medicine injection tube are respectively provided with an expansion part extending radially.
Preferably, the proximal end of the catheter body is provided with a catheter seat, the catheter seat comprises a first interface connected with the pressurizing channel, a second interface connected with the guide wire channel and a third interface connected with the medicine injection channel, and the outer side of the proximal end of the catheter body is provided with a catheter reinforcement fixedly connected to the catheter seat.
Preferably, the expanding balloon is a double-layer balloon, the outer layer is made of polyamide materials, and the inner layer is made of polyether block amide materials.
The beneficial effects of the utility model are as follows: according to the utility model, the expansion saccule is wrapped by the outer saccule, and a sealed medicine cavity is formed between the outer saccule and the expansion saccule, so that the expansion and medicine treatment can be carried out on the lesion position sequentially under the premise of using only one catheter on the same lesion position, the operation time is greatly shortened, meanwhile, the economic burden of a patient is lightened, the device is decompressed and taken out after the operation is finished, a bracket is not required to be placed on the lesion position, and then the patient does not need to take anti-platelet and anticoagulant medicines after the operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a cross-sectional view of the present utility model in the direction A-A;
FIG. 3 is a schematic view of the structure of the inflatable balloon when mounted on the inner tube and sealing barrier.
Reference numerals illustrate: 1. the catheter comprises a catheter main body, 2, an expanding balloon, 3, a guide wire channel, 4, a pressurizing channel, 5, an outer balloon, 6, a medicine cavity, 7, a medicine injection channel, 8, a catheter seat, 9, a first interface, 10, a second interface, 11, a third interface, 12, a catheter reinforcement, 13, a sealing baffle, 14, an expansion part, 15, a tip tube, 16, a marking ring, 1-1, an outer tube, 1-2, a pressurizing tube, 1-3, a guide wire tube, 1-4, a medicine injection tube, 1-5 and an inner tube.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
the application discloses a balloon dilation catheter which can realize the dilation of a target organ or a blood vessel by using one catheter and simultaneously carry out drug treatment after the dilation so as to reduce the loss of drugs, reduce the use quantity of the catheter and simultaneously reduce the pain of a patient during interventional operation;
in the field of interventional medical devices, the end relatively close to the operator is defined as the proximal end and the end relatively far away is the distal end.
Referring to fig. 1-3: the embodiment provides a three-layer balloon dilation catheter which comprises a catheter main body 1 and a dilation balloon 2 arranged on the outer side of the catheter main body 1, wherein the dilation balloon 2 can be a double-layer balloon, the outer layer is made of a polyamide material, and the inner layer is made of a polyether block amide material; specifically, the inner layer can be made of a material with the model of Pebax 7233, so that the expansion balloon 2 has good sealing property and elasticity, and meanwhile, the expansion balloon 2 is guaranteed not to absorb water, and the expansion balloon 2 with double layers is designed to have higher bursting pressure for more effectively expanding the stenosis.
As shown in fig. 1 and 2, a pressurizing channel 4 for pressurizing the expansion balloon 2 is arranged in the catheter main body 1, an outer balloon 5 is hermetically wrapped outside the expansion balloon 2, the volume of the outer balloon 5 is larger than that of the inner balloon 2, a sealed medicine cavity 6 is formed between the outer balloon 5 and the expansion balloon 2, a medicine injection channel 7 and a medicine outlet hole are communicated with the medicine cavity 6, the medicine injection channel 7 extends towards the proximal end of the catheter main body 1, the medicine outlet hole is arranged on the outer balloon 5, and preferably, the medicine outlet hole is arranged towards the inner wall of a target organ or a blood vessel, so that medicines can be conveniently contacted with lesion positions to realize medicine treatment; wherein the outer balloon 5 can be made of microporous membrane, and the drug outlet holes are micropores arranged on the outer balloon 5; when the inflatable balloon is used, contrast liquid is filled into the inner side of the inflatable balloon 2 through the pressurizing channel 4, so that the inflatable balloon 2 is inflated and expanded outwards, the outer balloon 5 on the outer side is pressed and contacted with the inner wall of a target organ or a blood vessel, so that a narrow lesion is inflated, and when the target organ and the blood vessel are treated by subsequent injection of medicine, the medicine is injected into the medicine cavity 6 formed between the inner balloon 2 and the outer balloon 5 through the medicine injection channel 7, but because the inner balloon 2 and the outer balloon 5 are in an expanded and tightly-adhered state, the formed medicine cavity 6 is smaller, and larger injection pressure is required to inject the medicine into the medicine cavity 6 between the inner balloon 2 and the outer balloon 5, so that the medicine injection is difficult; preferably, before the injection of the drug, part of the contrast solution is pumped back, so that a drug cavity 6 with a certain gap is formed between the inner balloon 2 and the outer balloon 5, thereby facilitating the injection of the drug, and finally the drug flows from the outer balloon 5 made of the microporous membrane in the drug cavity 6 to the outer target organ or the vascular wall for drug treatment;
as shown in fig. 1 and 2, a guide wire channel 3 is arranged on the inner side of a catheter main body 1, an inner tube 1-5 which is connected with the guide wire channel 3 in a sealing way is arranged at the far end of the catheter main body 1, a catheter seat 8 is arranged at the near end of the catheter main body 1, and the catheter seat 8 comprises a first interface 9 connected with a pressurizing channel 4, a second interface 10 connected with the guide wire channel 3 and a third interface 11 connected with a medicine injection channel 7; the second connector 10 connected with the guide wire channel 3 is positioned in the middle of the catheter main body 1, and the second connector 10, the guide wire channel 3 and the inner tube 1-5 are positioned on the same straight line, so that the guide wire can be conveniently penetrated into the guide wire from the second connector 10, and the guide wire can smoothly pass through the guide wire channel 3 and the inner tube 1-5;
preferably, the distal end of the inner tube 1-5 is connected with a tip tube 15 for guiding the outer balloon 5, and the diameter of the tip tube 15 is gradually enlarged from the distal end to the proximal end, so that the device can smoothly enter the body of a patient after being guided by the tip tube 15 in use, and preferably, the inner tube 1-5 is also provided with a marking ring 16 for marking.
Preferably, the catheter reinforcement 12 fixedly connected to the catheter hub 8 is provided on the outer side of the proximal end of the catheter body 1, so as to reinforce the connection strength between the catheter body 1 and the catheter hub 8 and prevent the catheter body 1 from being separated from the catheter hub 8.
Specifically, as shown in fig. 1 and 3, the catheter main body 1 comprises an outer tube 1-1, a pressurizing tube 1-2 positioned in the outer tube 1-1, a guide wire tube 1-3 positioned in the outer tube 1-1 and a medicine injection tube 1-4 positioned in the outer tube 1-1, wherein a pressurizing channel 4 is formed in the pressurizing tube 1-2, a guide wire channel 3 is formed in the guide wire tube 1-3, an inner tube 1-5 is in sealing connection with the guide wire tube 1-3, and a medicine injection channel 7 is formed in the medicine injection tube 1-4; wherein, a sealing baffle 13 is arranged at the inner side of the far end of the outer tube 1-1, and as shown in figure 3, the sealing baffle 13 is connected at the outer sides of the pressurizing tube 1-2, the guide wire tube 1-3 and the injection tube 1-4 in a sealing way; specifically, the sealing baffle 13 is in a circular plate-shaped structure, the sealing baffle 13 can be fixed in the inner tube 1-1 through sealing glue, mounting holes corresponding to the pressurizing tube 1-2, the wire guide tube 1-3 and the medicine injection tube 1-4 are respectively formed in a circular plate, one ends of the pressurizing tube 1-2, the wire guide tube 1-3 and the medicine injection tube 1-4 are inserted into the mounting holes and then are fixed and sealed through the sealing glue, and then the positions of the pressurizing tube 1-2, the wire guide tube 1-3 and the medicine injection tube 1-4 in the outer tube 1-1 are simultaneously fixed through the sealing baffle 13; in this embodiment, in order to facilitate penetration of the guide wire, the guide wire tube 1-3 is located at the central position of the outer tube 1-1, the pressurizing tube 1-2 and the injection tube 1-4 are respectively and uniformly arranged around the guide wire tube 1-3 at intervals, and in order to increase the tube diameters of the pressurizing tube 1-2 and the injection tube 1-4, the injection amount is increased under the condition that the injection pressure is unchanged, and expansion parts 14 extending radially are arranged on the pressurizing tube 1-2 and the injection tube 1-4, so that the tube diameters of the pressurizing tube 1-2 and the injection tube 1-4 are increased, and then the pressurizing and injection time is shortened, so that the operation time is indirectly shortened.
In this embodiment, as shown in fig. 1 and 3, the outer balloon 5 is disposed outside the dilatation balloon 2, and a sealed drug lumen 6 is formed between the outer balloon 5 and the dilatation balloon 2; in this embodiment, the expansion balloon 2 and the outer balloon 5 are in a cylindrical structure with two open ends, so that in order to facilitate the installation of the expansion balloon 2 and the outer balloon 5, one end of the expansion balloon 2 is connected with the outer side of the inner tube 1-5 in a sealing manner, the other end is connected with the sealing baffle 13 in a sealing manner and wraps the distal opening of the pressurizing tube 1-2, so that the pressurizing tube 1-2 is communicated with the expansion balloon 2, one end of the outer balloon 5 is connected with the outer side of the inner tube 1-5 in a sealing manner, the other end is connected with the sealing baffle 13 or the outer tube 1-1 in a sealing manner and wraps the distal opening of the drug injection tube 1-4, so that the outer balloon 5 wraps the outer side of the expansion balloon 2, and a corresponding drug cavity 6 is formed between the outer balloon 5 and the expansion balloon 2, so that the drug injection tube 1-4 is communicated with the drug cavity 6, and the volume of the drug cavity 6 can be controlled by controlling the installation space between the outer balloon 5 and the expansion balloon 2;
the installation mode is different from the installation mode: the two ends of the expansion balloon 2 can be directly and hermetically connected to the outer side of the inner tube 1-5, the pressurizing tube 1-2 passes through the balloon wall of the expansion balloon 2 to be communicated with the inner side of the expansion balloon 2, at the moment, the two ends of the outer balloon 5 positioned at the outer side of the expansion balloon 2 can also be hermetically connected to the outer side of the inner tube 1-5, and the medicine injection tube 1-4 passes through the balloon wall of the outer balloon 5 to be communicated with the inner side of the outer balloon 5; at this time, although the installation of the expansion balloon 2 and the outer balloon 5 is convenient, the sealing connection of the pressurizing tube 1-2 and the drug injection tube 1-4 with the balloon wall is troublesome;
on the premise that two ends of the expansion balloon 2 are directly connected to the outer side of the inner tube 1-5 in a sealing mode, two ends of the outer balloon 5 can be connected to the balloon wall of the expansion balloon 2 in a sealing mode, at the moment, the pressurizing tube 1-2 penetrates through the balloon wall of the expansion balloon 2 to be communicated with the inner side of the expansion balloon 2, the medicine injection tube 1-4 penetrates through the balloon wall of the outer balloon 5 to be communicated with the inner side of the outer balloon 5, at the moment, the outer balloon 5 is mounted on the balloon wall of the expansion balloon 2, the outer balloon 5 is completely attached to the expansion of the expansion balloon 2, and the expansion distance of the outer balloon 5 is only influenced by the maximum deformation amount of the expansion balloon 2, so that the outer balloon 5 can be expanded farther under the action of the expansion balloon 2.
While the utility model has been shown and described with reference to a preferred embodiment, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the scope of the utility model.
Claims (10)
1. The utility model provides a three-layer sacculus inflation pipe, includes pipe main part (1) and installs inflation sacculus (2) in the pipe main part (1) outside, inside being equipped with of pipe main part (1) is used for the inflation passageway (4) of inflation sacculus (2), characterized by: the drug delivery device is characterized in that the outer balloon (5) is wrapped by the expansion balloon (2) in an outer sealing mode, a sealed drug cavity (6) is formed between the outer balloon (5) and the expansion balloon (2), a drug injection channel (7) and a drug outlet hole are formed in the drug cavity (6) in a communicating mode, the drug injection channel (7) extends towards the proximal end of the catheter main body (1), and the drug outlet hole is formed in the outer balloon (5).
2. A three-layer balloon dilation catheter according to claim 1 wherein: the inner side of the catheter main body (1) is also provided with a guide wire channel (3), and the far end of the catheter main body (1) is provided with an inner tube (1-5) which is in sealing connection with the guide wire channel (3).
3. A three-layer balloon dilation catheter according to claim 2 wherein: the two ends of the expansion saccule (2) are connected with the outer side of the inner tube (1-5) in a sealing way, and the two ends of the outer saccule (5) are connected with the outer side of the inner tube (1-5) in a sealing way.
4. A three-layer balloon dilation catheter according to claim 2 wherein: the two ends of the expansion balloon (2) are connected to the outer side of the inner tube (1-5) in a sealing mode, and the two ends of the outer balloon (5) are connected to the balloon wall of the outer side of the expansion balloon (2) in a sealing mode.
5. A three-layer balloon dilation catheter according to claim 2 wherein: the catheter body (1) comprises an outer tube (1-1), a pressurizing tube (1-2) arranged in the outer tube (1-1), a wire guide tube (1-3) arranged in the outer tube (1-1) and a medicine injection tube (1-4) arranged in the outer tube (1-1), wherein a pressurizing channel (4) is formed in the pressurizing tube (1-2), a wire guide channel (3) is formed in the wire guide tube (1-3), an inner tube (1-5) is connected with the wire guide tube (1-3) in a sealing mode, and a medicine injection channel (7) is formed in the medicine injection tube (1-4).
6. A three layer balloon dilation catheter according to claim 5 wherein: the inner side of the far end of the outer tube (1-1) is provided with a sealing baffle (13) which is connected with the outer sides of the pressurizing tube (1-2), the guide wire tube (1-3) and the medicine injection tube (1-4) in a sealing way.
7. A three layer balloon dilation catheter according to claim 6 wherein: one end of the expansion balloon (2) is connected with the outer side of the inner tube (1-5) in a sealing way, the other end of the expansion balloon is connected with the sealing baffle (13) in a sealing way and wraps the distal opening of the pressurizing tube (1-2), one end of the outer balloon (5) is connected with the outer side of the inner tube (1-5) in a sealing way, and the other end of the expansion balloon is connected with the sealing baffle (13) or the outer tube (1-1) in a sealing way and wraps the distal opening of the drug injection tube (1-4) in a sealing way.
8. A three layer balloon dilation catheter according to claim 5 wherein: the guide wire tube (1-3) is located at the center of the outer tube (1-1), the pressurizing tube (1-2) and the medicine injection tube (1-4) are evenly arranged around the guide wire tube (1-3) at intervals respectively, and expansion parts (14) extending radially are arranged on the pressurizing tube (1-2) and the medicine injection tube (1-4).
9. A three-layer balloon dilation catheter according to claim 2 wherein: the catheter is characterized in that a catheter seat (8) is arranged at the proximal end of the catheter main body (1), the catheter seat (8) comprises a first interface (9) connected with the pressurizing channel (4), a second interface (10) connected with the guide wire channel (3) and a third interface (11) connected with the medicine injection channel (7), and a catheter reinforcement (12) fixedly connected to the catheter seat (8) is arranged on the outer side of the proximal end of the catheter main body (1).
10. A three-layer balloon dilation catheter according to claim 1 wherein: the expanding saccule (2) is a double-layer saccule, the outer layer is made of polyamide materials, and the inner layer is made of polyether block amide materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321342292.8U CN220327783U (en) | 2023-05-30 | 2023-05-30 | Three-layer balloon dilation catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321342292.8U CN220327783U (en) | 2023-05-30 | 2023-05-30 | Three-layer balloon dilation catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220327783U true CN220327783U (en) | 2024-01-12 |
Family
ID=89459600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321342292.8U Active CN220327783U (en) | 2023-05-30 | 2023-05-30 | Three-layer balloon dilation catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220327783U (en) |
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2023
- 2023-05-30 CN CN202321342292.8U patent/CN220327783U/en active Active
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