CN104740748A - Guiding catheter - Google Patents
Guiding catheter Download PDFInfo
- Publication number
- CN104740748A CN104740748A CN201310749764.6A CN201310749764A CN104740748A CN 104740748 A CN104740748 A CN 104740748A CN 201310749764 A CN201310749764 A CN 201310749764A CN 104740748 A CN104740748 A CN 104740748A
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- Prior art keywords
- guiding catheter
- chamber
- fluid
- outer tube
- catheter according
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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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0045—Catheters; Hollow probes characterised by structural features multi-layered, e.g. coated
-
- 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
-
- 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
- A61M25/0021—Catheters; Hollow probes characterised by the form of the tubing
- A61M25/0023—Catheters; Hollow probes characterised by the form of the tubing by the form of the lumen, e.g. cross-section, variable diameter
- A61M25/0026—Multi-lumen catheters with stationary elements
- A61M25/0032—Multi-lumen catheters with stationary elements characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or shapes comprising concave and convex parts
-
- 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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/005—Catheters; Hollow probes characterised by structural features with embedded materials for reinforcement, e.g. wires, coils, braids
-
- 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
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0662—Guide tubes
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Child & Adolescent Psychology (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Materials For Medical Uses (AREA)
Abstract
The invention provides a guiding catheter. The guiding catheter comprises an outer catheter body, an inner catheter body, one or more liquid flowing cavities and a balloon communicated with the liquid flowing cavities, wherein the liquid flowing cavities are distributed in the circumference of the thickness of the wall of the outer catheter body, and the distance between two farthest points, in the circumferential direction of the catheter, of a section of each liquid flowing cavity is larger than that between two farthest points, in the radial direction of the catheter, of the section of each liquid flowing cavity. The guiding catheter is capable of bearing high negative pressure and short in balloon withdrawal time.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly a kind of guiding catheter.
Background technology
Guiding catheter is a kind of custom-designed sheath pipe, can provide channel direction.It is usually used in carrying various intervention apparatus to arrive target and sets the goal, and provides support and protect for it.Modern technologies develop rapidly, in order to meet clinical demand, the guiding catheter of various shape, various function is developed, as being with the guiding catheter etc. of sacculus.
For balloon guide catheter, to avoid conduit subside except needing to bear certain negative pressure, the flexibility of sacculus pumpback time and guiding catheter head end is also most important.Current product on the market, because sacculus is in the process of pumpback, conduit subsides, and causes the sacculus pumpback time longer, adds the risk of thrombosis and distal vessels ischemia; Because conduit head end is comparatively hard, farther blood vessel cannot be entered, cause the failure of some supports or thromboembolism operation.
Summary of the invention
In view of this, the invention provides a kind of guiding catheter, larger negative pressure can not only be born, and there is less sacculus pumpback time and soft head end.
For achieving the above object, the invention provides following technical scheme:
A kind of guiding catheter, the sacculus comprising outer tube, interior pipe, fluid-through chamber and be communicated with described fluid-through chamber, one or more described fluid-through chamber is distributed in described outer tube wall thickness circumferentially, the cross section of described fluid-through chamber on described conduit is circumferential farthest the distance of 2 to be greater than in its radial direction the distance of 2 farthest.
Alternatively, the limit in described fluid-through chamber cross section partly overlaps with the limit of described interior tube section or fits.
Alternatively, the shape in described fluid-through chamber cross section is crescent, ellipse, bone-shaped, Fructus anacardii shape or kidney-shaped.
Alternatively, the wall of described fluid-through chamber is covered with smooth film.
Alternatively, described interior pipe has three-decker, and wherein cladding material is polyurethane; Intermediate layer is wound around by tinsel and/or is woven and makes, and described tinsel is the one in following material, or several combinations: stainless steel 304 V, Nitinol, tungsten; Internal layer is one or more the copolymer in poly-fluorocarbon, polyethylene, polypropylene or polyamide.
Alternatively, the material of described outer tube is the one in following material, or several combinations: polyamide, polyurethane, nylon, high density polyethylene (HDPE), block polyetheramides elastomer; And the hardness of the material of described outer tube proximally arrives far-end diminishes step by step.
Alternatively, form the head end of described guiding catheter between the far-end of described sacculus and the far-end of described guiding catheter, described head end is formed by the internal layer of described interior pipe and outer field extension.
Alternatively, the length of described head end is 3mm-100mm.
According to technical scheme of the present invention, guiding catheter is non-coaxial, and one or more fluid-through chamber forms non-coaxial cavity in the wall thickness of outer tube wall, and the size and shape of fluid-through chamber can design according to Bulking Time needed for sacculus and pumpback time.The three-decker that the interior pipe of this conduit has and braiding wherein and/or be wound around tinsel internal layer and make the interior pipe of conduit can participate in the support of conduit, improve the ability that conduit bears negative pressure.The shape in the cross section of fluid-through chamber can utilize the space at the wall thickness place of outer tube as much as possible, and to provide larger flow, and the impact of conduit being born to the ability of negative pressure is less.
Accompanying drawing explanation
Accompanying drawing is used for understanding the present invention better, does not form inappropriate limitation of the present invention.Wherein:
Fig. 1 is the schematic diagram of the profile of guiding catheter according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the section of guiding catheter according to the embodiment of the present invention;
Fig. 3 A to Fig. 3 E is the schematic diagram of several optional pattern in the A-A cross section of Fig. 2;
Fig. 4 and Fig. 5 is the schematic diagram of the structure of the spring of inner tube according to the embodiment of the present invention;
Fig. 6 is the schematic diagram of the head end structure of guiding catheter according to the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, one exemplary embodiment of the present invention is explained, comprising the various details of the embodiment of the present invention to help understanding, they should be thought it is only exemplary.Therefore, those of ordinary skill in the art will be appreciated that, can make various change and amendment, and can not deviate from scope and spirit of the present invention to the embodiments described herein.Equally, for clarity and conciseness, the description to known function and structure is eliminated in following description.
In Fig. 1 to Fig. 6, each sequence number is denoted as: 1-adapter, 2-delivery conduit body, 3-easily extensible sacculus, 4-diffusion-induced stress pipe, 5-fluid-through chamber, 6-lead-in cavity, 21-outer tube, pipe in 22-, 11-adapter side mouth, 12-adapter main aperture, the skin of pipe in 221-, the intermediate layer of pipe in 222, the internal layer of pipe in 223-, 2221-first turn, 2222-second turn, 31-join domain, 32-join domain, 7-develops point, 8-head end, 9-glue.
As shown in Figure 1 and Figure 2, guiding catheter in the embodiment of the present invention comprises expandable balloon 3, delivery conduit body 2, diffusion-induced stress pipe 4 and adapter 1, described delivery conduit body 2 comprises outer tube 21, interior pipe 22, fluid-through chamber 5 and lead-in cavity 6, wherein, fluid-through chamber 5 is formed by inner surface low friction coefficient materials, and lead-in cavity 6 is made up of the inner chamber of interior pipe 22; The near-end of expandable balloon 3 is connected with the distal seal of outer tube 21, and the far-end of expandable balloon 3 is connected with the distal seal of interior pipe 22; Adapter 1 is connected with the near-end of delivery conduit body 2, and the near-end of diffusion-induced stress pipe 4 is connected with the far-end of adapter 1.The tube wall being positioned at the pipe 22 at sacculus 3 position is embedded with development point 7, development point 7 is for the accurate location of conduit in operation process.
With reference to figure 2, Fig. 3 A to Fig. 3 E, guiding catheter in the present embodiment is non-coaxial, fluid-through chamber 5 is positioned at the wall thickness of outer tube 21, and be therefore non-coaxial cavity with interior pipe 22 and outer tube 21, the size and shape of fluid-through chamber 5 can design according to Bulking Time needed for sacculus and pumpback time.The fluid-through chamber of this non-coaxial makes the interior pipe of conduit can participate in the support of conduit, improves the ability that conduit bears negative pressure.A part for the wall of fluid-through chamber 5 can be the outer wall of interior pipe.The wall of fluid-through chamber 5 also can be covered with smooth film, the coefficient of friction of the wall of fluid-through chamber 5 can be reduced like this, avoid balloon expandable medium to stick to the conduit caused in fluid-through chamber too much and withdraw difficulty, contribute to the time reducing sacculus pumpback, reduce the risk of thromboembolic complications and distal ischemia.
Fluid-through chamber also can be designed to other shapes, in order to make the Bulking Time of sacculus and the pumpback time short as much as possible, fluid-through chamber need be made to have flow large as far as possible, but catheter body needs thinner external diameter.For this reason in the present embodiment, the cross section of fluid-through chamber on conduit is circumferential farthest the distance of 2 to be greater than in its radial direction the distance of 2 farthest, as shown in the fluid-through chamber 51 to 55 in Fig. 3 A to Fig. 3 E, exemplarily, there is shown in meniscate fluid-through chamber cross section (fluid-through chamber 51,55 as in Fig. 3 A, 3E) and be similar to the fluid-through chamber cross section (fluid-through chamber 53 as in Fig. 3 C) of bone-shaped.The cross section of fluid-through chamber also can be oval, as shown in the fluid-through chamber 52 in Fig. 3 B.Fluid-through chamber can also be the shape being similar to kidney; Shape also can be longer, is namely similar to the shape of Fructus anacardii.These above-mentioned shapes can both utilize the space at the wall thickness place of outer tube 21 as much as possible, and to provide larger flow, and the impact of conduit being born to the ability of negative pressure is less.Fluid-through chamber also can be multiple in addition, as shown in above-mentioned each figure.
The wall of fluid-through chamber can be directly made up of outer tube material; Or wherein a part is the outer wall of interior pipe, and now the wall of fluid-through chamber overlaps with the wall of interior pipe.Fluid-through chamber also can have special wall, and can fit with the outer wall of interior pipe or be separated, namely the material of the wall of fluid-through chamber be different from outer tube and interior pipe, can adopt polytetrafluoroethylene (PTFE), also can be fluorinated ethylene propylene (FEP) (FEP).
Fluid-through chamber 5 communicates with the side opening 11 of adapter 1, and expansion medium injects fluid-through chamber 5 by the side opening 11 of adapter.Outer tube 22 is formed by the tubing of three sections of different hardness, is mainly divided into relative hardness distal shaft section, middle transition section and flexible relative and is connected to the distal shaft section will of proximal part.Outer tube 22 can adopt following material: polyamide, polyurethane, nylon, high density polyethylene (HDPE) or block polyetheramides elastomer (PEBAX) combine, and hardness is 78D-20D.
As shown in Figure 4 and Figure 5, the interior pipe 22 in the guiding catheter of the embodiment of the present invention comprises internal layer 223, skin 221 and intermediate layer 222(turn and strengthens), development point 7 can also be added in addition.The internal layer 223 of interior pipe is less or roughly the same than the thickness of the skin 221 of interior pipe; Wherein, the constituent material of internal layer 223 can be: the one in PTFE, FEP and high density polyethylene (HDPE), or two kinds combine, and improves the surface smoothness of lead-in cavity 6, thus makes seal wire, gets bolt device etc. and arrive lesions position more smoothly.The internal diameter preferred value of interior pipe 22 is 1.2mm-2.1mm.Wherein, the constituent material of outer 221 can be: one or more in nylon, silicone rubber, polyurethane, polyamide series or block polyetheramides elastomer (PEBAX) combine, and hardness is 25D-55D.Wherein, intermediate layer 222 is made up of two different wire spring circle wrapping wire directions differences, can intensity needed for product, arranges the density of wrapping wire.The material of turn can be the metal materials such as stainless steel 304 v, Nitinol or tungsten, and diameter is between 0.1mm-0.3mm, and can adopt round silk or flat filament.
The far-end of sacculus 3 is connected by adhesive seal with the far-end of interior pipe 22, form join domain 32, this can be used as head end, or there is a segment distance from head end, as shown in Figure 6, namely conduit head end 8 is that sacculus front end 81(is near one end of distal end of catheter 82) and distal end of catheter 82 between part, formed by the internal layer 223 of interior pipe 22 and the extension of outer 221.The length of head end 8 is: 3mm-100mm.
In addition, the integral surface of the guiding catheter of the embodiment of the present invention or at least sacculus 3 and head end 8 part by such as applying, the method such as injection forms the coating be made up of hydrophilic material, contribute to reducing mantle friction, more smooth and easy when catheter body intravasation is passed through, improve the operating characteristics of conduit.Above-mentioned hydrophilic coating material can be: polyvinylpyrrolidone (PVP), hyaluronate sodium, polyurethane etc.Below lift several specific embodiments of the invention.
Embodiment 1
Adopt 3 development points in the present embodiment, be separately positioned in the middle of head end and sacculus, material adopts silver.Outer tube material is PEBAX, and the hardness proximally arriving far-end diminishes step by step, is respectively 78D, 55D, 35D.Three layers of establishment material that interior pipe adopts, cladding material is polyurethane, and intermediate layer is formed by stainless steel wrap wire, the wide 0.2mm of silk, and internal layer is PTFE.Inner tube diameter is 3mm.The cross section of fluid-through chamber 5 adopts crescent.The header terminal design length of conduit is 3mm.After catheter body has connected, catheter surface coating hydrophilic coating, water wetted material is selected: hyaluronate sodium.
Embodiment 2
Adopt 2 development points in the present embodiment, be separately positioned in the middle of head end and sacculus, material adopts platinumiridio.Outer tube material is PEBAX, and the hardness proximally arriving far-end diminishes step by step, is respectively 72D, 63D, 40D.Interior pipe adopts three layers to work out material, and cladding material is polyurethane, and intermediate layer is formed by stainless steel wrap wire, the wide 0.15mm of silk, and internal layer is FEP.Inner tube diameter is 2mm, and fluid-through chamber 54 adopts dual pathways crescent.Conduit head end design length is 10mm.After catheter body has connected, catheter surface coating hydrophilic coating, polyvinylpyrrolidone (PVP) selected by water wetted material.
Embodiment 3
Adopt two development points in the present embodiment, be separately positioned in the middle of head end and sacculus, material adopts platinumiridio.Outer tube material is PEBAX, and the hardness proximally arriving far-end diminishes step by step, is respectively 72D, 55D, 25D.Interior pipe adopts three layers to work out material, and cladding material is PEBAX, and intermediate layer is formed by Nitinol wrapping wire, the wide 0.15mm of silk, and internal layer is fluororesin (EFEP), and inner tube diameter is 1mm.Fluid-through chamber 56 adopts triple channel bone-shaped.Conduit head end design length is 15mm.After catheter body has connected, catheter surface coating hydrophilic coating, polyurethane selected by water wetted material.
According to the technical scheme of the embodiment of the present invention, guiding catheter is non-coaxial, and one or more fluid-through chamber forms non-coaxial cavity in the wall thickness of outer tube wall, and the size and shape of fluid-through chamber can design according to Bulking Time needed for sacculus and pumpback time.The three-decker that the interior pipe of this conduit has and braiding wherein and/or be wound around tinsel internal layer and make the interior pipe of conduit can participate in the support of conduit, improve the ability that conduit bears negative pressure.The shape in the cross section of fluid-through chamber can utilize the space at the wall thickness place of outer tube as much as possible, and to provide larger flow, and the impact of conduit being born to the ability of negative pressure is less.
Above-mentioned detailed description of the invention, does not form limiting the scope of the invention.It is to be understood that depend on designing requirement and other factors, various amendment, combination, sub-portfolio can be there is and substitute in those skilled in the art.Any amendment done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within scope.
Claims (8)
1. a guiding catheter, the sacculus comprising outer tube, interior pipe, fluid-through chamber and be communicated with described fluid-through chamber, it is characterized in that, one or more described fluid-through chamber is distributed in described outer tube wall thickness circumferentially, the cross section of described fluid-through chamber on described conduit is circumferential farthest the distance of 2 to be greater than in its radial direction the distance of 2 farthest.
2. guiding catheter according to claim 1, is characterized in that, the limit in described fluid-through chamber cross section partly overlaps with the limit of described interior tube section or fits.
3. guiding catheter according to claim 1, is characterized in that, the shape in described fluid-through chamber cross section is crescent, ellipse, bone-shaped, Fructus anacardii shape or kidney-shaped.
4. guiding catheter according to claim 1, is characterized in that, the wall of described fluid-through chamber is covered with smooth film.
5. guiding catheter according to any one of claim 1 to 4, is characterized in that, described interior pipe has three-decker, and wherein cladding material is polyurethane; Intermediate layer is wound around by tinsel and/or is woven and makes, and described tinsel is the one in following material, or several combinations: stainless steel 304 V, Nitinol, tungsten; Internal layer is one or more the copolymer in poly-fluorocarbon, polyethylene, polypropylene or polyamide.
6. guiding catheter according to any one of claim 1 to 4, is characterized in that, the material of described outer tube is the one in following material, or several combinations: polyamide, polyurethane, nylon, high density polyethylene (HDPE), block polyetheramides elastomer; And the hardness of the material of described outer tube proximally arrives far-end diminishes step by step.
7. guiding catheter according to claim 1, is characterized in that, forms the head end of described guiding catheter between the far-end of described sacculus and the far-end of described guiding catheter, and described head end is formed by the internal layer of described interior pipe and outer field extension.
8. guiding catheter according to claim 7, is characterized in that, the length of described head end is 3mm-100mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749764.6A CN104740748B (en) | 2013-12-31 | 2013-12-31 | A kind of guiding catheter |
| PCT/CN2014/095936 WO2015101333A1 (en) | 2013-12-31 | 2014-12-31 | Guide catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310749764.6A CN104740748B (en) | 2013-12-31 | 2013-12-31 | A kind of guiding catheter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104740748A true CN104740748A (en) | 2015-07-01 |
| CN104740748B CN104740748B (en) | 2019-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310749764.6A Active CN104740748B (en) | 2013-12-31 | 2013-12-31 | A kind of guiding catheter |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104740748B (en) |
| WO (1) | WO2015101333A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193498A (en) * | 2015-09-18 | 2015-12-30 | 先健科技(深圳)有限公司 | Ablation catheter device |
| CN105476670A (en) * | 2016-01-20 | 2016-04-13 | 中国人民解放军第三军医大学第二附属医院 | Sheathing canal with adjustable canal diameter |
| CN106620997A (en) * | 2017-01-04 | 2017-05-10 | 临沂市兴华医用器材有限公司 | Double-layer combined anesthesia catheter |
| CN106725696A (en) * | 2017-02-13 | 2017-05-31 | 中国医科大学附属盛京医院 | A kind of dual balloon catheter for blocking common iliac blood flow |
| CN114288528A (en) * | 2021-12-31 | 2022-04-08 | 科睿驰（深圳）医疗科技发展有限公司 | Balloon micro-catheter and preparation method thereof |
| CN114796809A (en) * | 2022-03-30 | 2022-07-29 | 深圳市顺美医疗股份有限公司 | Balloon guide catheter |
| WO2022166539A1 (en) * | 2021-02-05 | 2022-08-11 | 微创神通医疗科技（上海）有限公司 | Catheter reinforcing layer and catheter |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107648721A (en) * | 2017-09-06 | 2018-02-02 | 南通伊诺精密塑胶导管有限公司 | A kind of anti-folding guiding catheter of high flow capacity |
| CN112043346A (en) * | 2019-06-06 | 2020-12-08 | 徐勇 | Intravascular thrombus removal balloon catheter |
| CN113144379A (en) * | 2021-05-26 | 2021-07-23 | 阎悦萌 | Porous aortic arch radiography catheter |
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| CN105193498A (en) * | 2015-09-18 | 2015-12-30 | 先健科技(深圳)有限公司 | Ablation catheter device |
| CN105476670A (en) * | 2016-01-20 | 2016-04-13 | 中国人民解放军第三军医大学第二附属医院 | Sheathing canal with adjustable canal diameter |
| CN105476670B (en) * | 2016-01-20 | 2017-10-13 | 中国人民解放军第三军医大学第二附属医院 | A kind of adjustable sheath of caliber |
| CN106620997A (en) * | 2017-01-04 | 2017-05-10 | 临沂市兴华医用器材有限公司 | Double-layer combined anesthesia catheter |
| CN106725696A (en) * | 2017-02-13 | 2017-05-31 | 中国医科大学附属盛京医院 | A kind of dual balloon catheter for blocking common iliac blood flow |
| CN106725696B (en) * | 2017-02-13 | 2019-07-19 | 中国医科大学附属盛京医院 | It is a kind of for blocking the dual balloon catheter of common iliac blood flow |
| WO2022166539A1 (en) * | 2021-02-05 | 2022-08-11 | 微创神通医疗科技（上海）有限公司 | Catheter reinforcing layer and catheter |
| CN114288528A (en) * | 2021-12-31 | 2022-04-08 | 科睿驰（深圳）医疗科技发展有限公司 | Balloon micro-catheter and preparation method thereof |
| CN114796809A (en) * | 2022-03-30 | 2022-07-29 | 深圳市顺美医疗股份有限公司 | Balloon guide catheter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104740748B (en) | 2019-06-11 |
| WO2015101333A1 (en) | 2015-07-09 |
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Effective date of registration: 20211206 Address after: 201318 building 19, Lane 500, Furonghua Road, Pudong New Area, Shanghai Patentee after: Shentu medical technology (Shanghai) Co.,Ltd. Address before: 201318 building 16, Lane 222, Guangdan Road, Pudong New Area, Shanghai Patentee before: MICROPORT NEUROTECH (SHANGHAI) Co.,Ltd. |