CN211561526U - Balloon dilatation catheter - Google Patents
Balloon dilatation catheter Download PDFInfo
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- CN211561526U CN211561526U CN201921028116.0U CN201921028116U CN211561526U CN 211561526 U CN211561526 U CN 211561526U CN 201921028116 U CN201921028116 U CN 201921028116U CN 211561526 U CN211561526 U CN 211561526U
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- balloon
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- liquid inlet
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- 239000007788 liquid Substances 0.000 claims abstract description 50
- 239000006185 dispersion Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 238000011161 development Methods 0.000 claims abstract description 5
- 230000010339 dilation Effects 0.000 claims description 8
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000012800 visualization Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
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- 239000004677 Nylon Substances 0.000 description 4
- 238000002399 angioplasty Methods 0.000 description 4
- 229920001778 nylon Polymers 0.000 description 4
- 210000005077 saccule Anatomy 0.000 description 4
- KKJUPNGICOCCDW-UHFFFAOYSA-N 7-N,N-Dimethylamino-1,2,3,4,5-pentathiocyclooctane Chemical compound CN(C)C1CSSSSSC1 KKJUPNGICOCCDW-UHFFFAOYSA-N 0.000 description 3
- 229920002614 Polyether block amide Polymers 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
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- -1 polypropylene Polymers 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
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- 229920002647 polyamide Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
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- 230000036262 stenosis Effects 0.000 description 2
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Chemical group 0.000 description 2
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 206010003226 Arteriovenous fistula Diseases 0.000 description 1
- 101000606535 Homo sapiens Receptor-type tyrosine-protein phosphatase epsilon Proteins 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
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- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
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- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- 229910052715 tantalum Inorganic materials 0.000 description 1
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- 230000001225 therapeutic effect Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
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Abstract
The utility model provides a sacculus expansion pipe, including pipe joint, stress dispersion pipe, propelling movement pipe, sacculus, development mark, water blocking film and block, wherein: the near end is fixed with the catheter joint, the far end of the pushing pipe is fixed with the balloon, the pushing pipe is of a hollow structure, three independent cavities (a liquid inlet cavity, a wire guide cavity and an exhaust cavity) are formed in the pipe body, and the liquid inlet cavity and the exhaust cavity are communicated with each other at the balloon wrapping section. The balloon dilatation catheter provided by the embodiment of the application can realize quick exhaust of air in the whole pressurizing channel by adding the exhaust channel. The current clinical ubiquitous is avoided: before the catheter is placed, a doctor needs to perform complex operation for many times and repeatedly exhaust, and the current situation that no air residue exists in a pressurizing channel of the balloon dilatation catheter cannot be ensured; the risk of inaccurate expansion pressure caused by incomplete gas discharge in the pressurization cavity is avoided.
Description
Technical Field
The utility model relates to a medical appliance, in particular to a balloon dilatation catheter.
Background
Interventional medical devices are emerging medical device technologies in recent years, and play a very important role in reducing trauma to patients and improving the treatment effect of diseases. For example, the interventional balloon dilatation catheter applied in various lumens of a human body can be used for the treatment of arteriovenous vascular stenosis or the internal dilatation treatment of an intravascular stent (an implantable tubular structure for supporting the lumen of a blood vessel), the treatment of diseases which can not be treated by a bare stent and a drug stent, such as the treatment of peripheral arterial vessel obstruction or stenosis diseases, the dilatation treatment of arteriovenous fistula stenosis, the treatment of in-stent restenosis and the like. Moreover, the interventional balloon dilatation catheter can also be used as a conveyor to convey various stents, such as vascular stents, biliary stents, esophageal stents, intestinal stents, pancreatic stents, urethral stents, tracheal stents, etc.
Among them, percutaneous transluminal angioplasty (PTA or PTCA) is a technique of percutaneous puncture in which a balloon dilatation catheter is inserted into a stenosed part of a blood vessel, and the balloon is dilated under the guidance and monitoring of a medical imaging device to dilate the stenosed part of the blood vessel and increase the blood flow of the blood vessel. In clinical use, balloon inflation pressure is a very important factor affecting the therapeutic effect. The Rated Burst Pressure (RBP) of the balloon dilatation catheter is the most important performance index of the product, and as the stability and accuracy of liquid on pressure transmission are far higher than those of gas, a clinician needs to ensure that no air remains in a pressurizing channel of the balloon dilatation catheter before puncturing and placing a catheter, so that the balloon can be filled with liquid to pressurize and dilate the narrow part of the blood vessel.
Through research on the prior art, the applicant finds that the existing intravascular balloon dilatation catheter on the market and the product under development basically only have two channels (a guide wire cavity and a pressurizing cavity), the diameter of a push tube of the PTA or PTCA balloon dilatation catheter is generally 1.4-2.3 mm, the length of the push tube is generally 400-1350 mm, and the requirements of filling liquid into the balloon catheter and exhausting air are difficult to achieve simultaneously through only one long and thin channel of the pressurizing cavity. At present, most intravascular balloon dilatation catheter manufacturers require doctors to ensure that no air remains in a pressurizing cavity through a series of complicated operations on product specifications and by repeatedly pumping negative pressure and filling liquid. This operation is consuming time longer to because the propelling movement pipe is mostly opaque material, the doctor can't be through observing whether have the bubble to remain in the propelling movement pipe pressurization intracavity and judge whether the air has been arranged to the greatest extent, can influence pressure transmission if the air is not arranged to the greatest extent, increase the risk of operation failure. Therefore, there is a need for a balloon dilation catheter that is fast in venting and that can ensure, in principle/structure, that the pressurized lumen and the air within the balloon are exhausted.
SUMMERY OF THE UTILITY MODEL
In view of the above technical problems of the prior art, the present invention is directed to developing a balloon dilatation catheter that can achieve rapid air removal and ensure in principle/structure that the air in the pressurized channel is completely exhausted.
In order to achieve the above object, the present invention provides a balloon dilatation catheter comprising: pipe joint, stress dispersion pipe, propelling movement pipe, sacculus, development mark, water blocking film, block, wherein:
the pushing pipe is of a hollow structure, 3-4 independent cavities are formed in the pipe body, and 3 independent channels are preferably selected; the near end of the pushing tube is fixed with the catheter joint, and the far end of the pushing tube is fixed with the balloon and penetrates out of the balloon;
the method is characterized in that:
the inside of the pushing pipe is provided with three independent channels (a liquid inlet cavity, a thread guide cavity and an exhaust cavity), the sectional area of the liquid inlet cavity is larger than or equal to that of the exhaust cavity and is respectively communicated with three interfaces of the pipe joint, and the three interfaces of the pipe joint cannot be communicated with each other; and the liquid inlet cavity and the air outlet cavity of the push pipe are communicated with each other at the balloon wrapping section.
Preferably, the sectional area of the exhaust cavity is 10% -100% of that of the liquid inlet cavity, and the sectional area of the exhaust cavity is preferably 40% of that of the liquid inlet cavity.
The balloon dilatation catheter is characterized in that the intercommunication of the liquid inlet cavity and the air exhaust cavity in the balloon wrapping section is realized in a mode of adding side holes on the pushing pipe, the number of the side holes corresponding to each cavity channel is 1-5, the diameter range of the side holes is 0.5-6 mm, the side holes corresponding to two preferred cavity channels are distributed at two ends of the balloon wrapping section, and the distance between the side holes of different cavity channels is 6-220 mm.
Preferably, the side hole of the air inlet cavity is positioned at the far end of the balloon wrapping section, and the side hole of the air outlet cavity is positioned at the near end of the balloon wrapping section.
Preferably, an outlet of the conduit joint corresponding to the exhaust cavity is provided with an air-permeable water-blocking film, the air-permeable water-blocking film can be fixed on the joint in an ultrasonic welding/hot melt welding/mechanical pressing mode, and the water-blocking film can be made of one or more of glass fiber, polypropylene, acrylic acid copolymer, polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTPE), polyethylene terephthalate (PET) and Polyamide (PA).
Preferably, a cap, preferably a screw-thread interfitting cap, is arranged at the exhaust interface corresponding to the exhaust cavity and is in sealing fit with the interface.
Preferably, the balloon dilatation catheter further comprises a stress dispersion tube disposed between or wrapped around the connection site of the push tube and the catheter hub.
Preferably, the balloon and the push tube material are made of medical polymer materials, such as Nylon and/or Pebax, or polyurethane or silica gel, wherein Nylon is preferably Nylon 12.
Preferably, the balloon dilatation catheter further comprises a visualization mark, the visualization mark is embedded in or sleeved on the pushing tube, and the position of the visualization mark is opposite to that of the balloon.
Preferably, the developing marking material is one or more of metal rings such as platinum, iridium, tantalum, tungsten and the like, or a compound containing one or more of tungsten, bismuth and barium; and the position of the developing mark is opposite to the position of the balloon.
It is seen by the above technical scheme of the utility model that, the utility model provides a sacculus expansion pipe, wherein, increase a gas cavity in the pipe pressurization passageway. When the balloon dilatation catheter is used, a doctor only needs to normally operate (the catheter joint faces upwards, and the far end of the push pipe naturally droops), liquid is injected into the pressurizing connector, gas in the pressurizing channel can enter the balloon along the side hole in the far end of the balloon communicated with the liquid inlet cavity, enters the exhaust cavity through the side hole in the near end of the balloon communicated with the exhaust cavity, and finally discharges air out of the whole pressurizing channel through the ventilation water blocking film. Because the sectional area of the exhaust cavity is smaller than that of the liquid inlet cavity/the saccule, the flowing resistance of the liquid entering the exhaust cavity is obviously larger than that of the liquid inlet cavity and the saccule, and the liquid in the exhaust cavity is gradually filled into the saccule from low to high under the action of the gravity of the liquid, so that the liquid can completely fill the liquid inlet cavity and the saccule and then enters the exhaust cavity. The ventilation water-blocking film can ensure that air in the pressurizing channel is quickly exhausted and no liquid flows out. When clinical needs high pressure expansion, can screw up with sealed cap at the exhaust interface department after exhausting the air, prevent that liquid pressure is too big to puncture the water-blocking film, lead to liquid outflow.
The utility model provides a this sacculus expansion pipe not only exhaust fastly, can also follow principle/structural assurance row to the greatest extent adds the interior air of pressure chamber and sacculus to save operation time, can improve the operation success rate simultaneously.
Drawings
Fig. 1 is a schematic partial cross-sectional view of a balloon dilation catheter according to a preferred embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a catheter adapter of a balloon dilation catheter according to a preferred embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a pusher tube of a balloon dilation catheter according to a preferred embodiment of the present invention;
fig. 4 is a schematic view of the side holes of the inlet chamber and the exhaust chamber of a balloon dilatation catheter according to a preferred embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution in the present application, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the specific embodiments described herein without making any inventive step, shall fall within the scope of the inventive concept.
Preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a partially sectional structural view of a balloon catheter according to a preferred embodiment of the present invention. In the drawing, the distal end means the left end, and the proximal end means the right end.
As shown in fig. 1, the utility model discloses a sacculus expansion pipe includes including pipe joint 1, stress dispersion pipe 2, propelling movement pipe 3, sacculus 4, development mark 5, water-blocking film 6, block cap 7, wherein: the catheter joint is provided with three interfaces, 11 is a liquid inlet interface, 12 is a guide wire interface, and 13 is an exhaust interface; the propelling pipe 3 is of a hollow structure, three independent channels are arranged in the pipe body, a cavity channel 31 is a liquid inlet cavity (corresponding to a 11 liquid inlet interface), a cavity channel 32 is a wire guide cavity (corresponding to a 12 wire guide interface), a cavity channel 33 is an exhaust cavity (corresponding to a 13 exhaust interface), and the cavity channels/interfaces cannot be communicated with each other; the near end of the push tube 3 is fixed with the catheter joint 1, and the far end is fixed with the balloon 4 and penetrates out of the balloon; the liquid inlet cavity 31 (corresponding to a side hole 41 in the balloon) and the air outlet cavity 33 (corresponding to a side hole 43 in the balloon) are communicated at the balloon wrapping section, and the guide wire cavity 32 is opened corresponding to the far end 42 of the push pipe and is used for guide wire penetration guidance.
When the balloon dilatation catheter is used clinically, the handheld catheter connector 1 is filled with liquid and exhausted with gas, and the far end of the push pipe 3 naturally hangs down. When liquid is injected into the liquid inlet port 11, gas in the pressurizing channel can enter the balloon 4 along the liquid inlet cavity 31 and is communicated with the side hole 41 at the far end of the balloon, and then enters the air exhaust cavity 33 through the side hole 43 at the near end of the balloon, and finally the air is exhausted out of the whole pressurizing channel through the air-ventilation water-blocking film 7. Liquid flows into the balloon along the liquid inlet cavity 31 through the side hole 41 (far end) from the liquid inlet interface 11, because the sectional area of the air exhaust cavity 33 is far smaller than the sectional areas of the liquid inlet cavity 31 and the balloon, the flowing resistance of the liquid entering the air exhaust cavity 33 is larger than the resistance of filling the liquid inlet cavity 31 and the balloon, and the liquid in both the two cavities can firstly gradually fill the balloon from low to high under the action of the self gravity, so the liquid can firstly completely fill the liquid inlet cavity 31 and the balloon 4 and then flows into the air exhaust cavity 33 through the side hole 43 (near end), and finally the liquid is stopped at the position of the ventilation water-blocking film 6, and at the moment, the gas in the whole pressurizing channel (the liquid inlet interface 11, the liquid inlet cavity 31, the balloon 4, the air exhaust. When high-pressure expansion is clinically needed (the expansion pressure of the balloon is greater than the limit water pressure resistance of the ventilation liquid stop film), the exhaust interface 13 can be screwed down by the cap 7 after air is exhausted, and the phenomenon that the water blocking film is punctured due to overlarge hydraulic pressure to cause liquid outflow is prevented.
In the present embodiment, two developing marks 5 are provided, which are provided on the push tube 3 at positions opposite to both ends of the balloon 4, respectively.
The utility model discloses in, propelling movement pipe 3, sacculus 4 can adopt medical macromolecular material pipe to make, macromolecular material includes for Nylon (Nylon) and/or Pebax (block polyether amide), or one or several kinds in materials such as polyurethane or silica gel, adopt medical macromolecular material after, this intervention formula sacculus expansion pipe has certain elasticity to can be crooked (handheld pipe joint, the propelling movement pipe distal end is flagging naturally under the action of gravity), can also have certain intensity simultaneously, can be at human intravascular movement from this, can not cause the damage to the blood vessel.
In addition, in the present invention, the balloon dilatation catheter refers to various balloon dilatation catheters known to those skilled in the art, including but not limited to PTA balloon dilatation catheter, PTCA balloon dilatation catheter, balloon stent transporter, etc.
The foregoing are only some of the specific embodiments of the present application. It should be noted that, for those skilled in the art, without departing from the principles and inventive concepts of the present invention, several modifications and variations can be made, and these modifications and variations should also be considered to fall within the scope and inventive concepts of the present application.
Claims (6)
1. A balloon dilation catheter comprising: pipe joint (1), stress dispersion pipe (2), propelling movement pipe (3), sacculus (4), development mark (5), water blocking film (6), block cap (7), wherein: the propelling tube is of a hollow structure, the near end of the propelling tube is fixed with the catheter joint, and the far end of the propelling tube is fixed with the balloon and penetrates out of the balloon;
the method is characterized in that: the inside of the pushing pipe is provided with three independent channels which are a liquid inlet cavity, a thread guide cavity and an exhaust cavity, the sectional area of the liquid inlet cavity is larger than or equal to that of the exhaust cavity, each channel is respectively communicated with three interfaces of the conduit joint, and the three interfaces of the conduit joint cannot be communicated with each other; and the liquid inlet cavity and the air outlet cavity of the push pipe are communicated with each other at the balloon wrapping section.
2. The balloon dilatation catheter according to claim 1, wherein the intercommunication of the liquid inlet cavity and the gas outlet cavity at the balloon wrapping section is realized by adding side holes on the pushing tube, the number of the side holes corresponding to each cavity channel is 1-5, and the diameter of each side hole ranges from 0.5 mm to 6 mm; the side holes corresponding to the two cavities are distributed at two ends of the balloon wrapping section, and the distance between the side holes of different cavities is 6-220 mm.
3. A balloon dilatation catheter according to claim 1 or 2 wherein a ventilation and water-blocking film is attached to the exhaust port of the exhaust lumen by ultrasonic welding, hot melt welding or mechanical compression.
4. A balloon dilation catheter according to claim 1 or claim 2 wherein a cap is provided at the venting interface corresponding to the venting lumen for sealing engagement with the interface.
5. A balloon dilation catheter according to claim 1 or claim 2 wherein a pressure dispersion tube is provided between the push tube and the catheter hub or around the connection between the push tube and the catheter hub.
6. A balloon dilation catheter according to claim 1 or 2, further comprising a visualization marker, wherein the visualization marker is embedded in or sleeved on the pushing tube, and the position of the visualization marker is opposite to the position of the balloon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921028116.0U CN211561526U (en) | 2019-07-04 | 2019-07-04 | Balloon dilatation catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921028116.0U CN211561526U (en) | 2019-07-04 | 2019-07-04 | Balloon dilatation catheter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211561526U true CN211561526U (en) | 2020-09-25 |
Family
ID=72522882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921028116.0U Active CN211561526U (en) | 2019-07-04 | 2019-07-04 | Balloon dilatation catheter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211561526U (en) |
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2019
- 2019-07-04 CN CN201921028116.0U patent/CN211561526U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A balloon dilation catheter Effective date of registration: 20231129 Granted publication date: 20200925 Pledgee: Bank of Communications Ltd. Jiangxi branch Pledgor: JIANGXI SANXIN MEDTEC Co.,Ltd. Registration number: Y2023980068493 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |