CN201596219U - Micro-catheter for vascular interventional therapy - Google Patents
Micro-catheter for vascular interventional therapy Download PDFInfo
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- CN201596219U CN201596219U CN201020113561XU CN201020113561U CN201596219U CN 201596219 U CN201596219 U CN 201596219U CN 201020113561X U CN201020113561X U CN 201020113561XU CN 201020113561 U CN201020113561 U CN 201020113561U CN 201596219 U CN201596219 U CN 201596219U
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- microtubular
- head end
- distal ports
- vascular interventional
- proximal segment
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Abstract
The utility model discloses a micro-catheter for vascular interventional therapy, which comprises a rigid near-end section, a transition section with gradually changed hardness, a soft far-end section and a head end which is connected with the far-end section and is softer than the far-end section. Change of conicity of the outer diameter of the head end is reduced, the micro-catheter is provided with a smooth inner cavity with unchanged diameter, and the smooth inner cavity penetrates through the near-end section, the transition section, the far-end section and the head section. By aid of the super-soft head end, the micro-catheter for vascular interventional therapy can be adaptable to tiny and bent blood vessels and particularly adaptable to blood vessels of brains, can smoothly reach the blood vessels and lesion portions of the blood vessels of brains, reduces damages to the blood vessels, and can guarantee extremely high smoothness when other appliances such as a spring ring and the like pass through the micro-catheter due to the smooth inner cavity with the unchanged diameter.
Description
Technical field
This utility model relates to medical instruments field, relates in particular to a kind of vascular interventional treatment, particularly microtubular of cerebrovascular interventional therapy of being used for.
Background technology
In recent years, interventional therapy develops rapidly at home, microtubular passes the indispensable apparatus of lesion region as interventional therapy in the blood vessel, also there are some difficult points, for example, blood vessel is under thinner and crooked situation, and general microtubular just is difficult to arrive lesion locations, and follow-up intervene operation can't be carried out.
The patent No. is the changeover portion that the disclosed microtubular of the american documentation literature of US6355027 and US6296631 all is divided into proximal segment, distal ports and hardness gradual change, but the microtubular Tip of this traditional structure (head end of distal ports) can't reach the degree of a ultra-soft, be difficult to pass through for tiny zigzag cerebrovascular, or pass through difficulty.
The patent No. is that the disclosed microtubular near-end of the american documentation literature of US6652508 is made up of a metal hypotube, the hypotube far-end has a series of spiral slot, the prerequisite decline soft of conduit external diameter can not changed, far-end flexible length plastic catheter and near-end hypotube link together, constituted a near-end rigidity, the softish microtubular of far-end, though the propelling movement of such microtubular near-end is fine, but the hardness transition of itself and far-end soft is too big, conduit integral body is in endovascular trafficability characteristic and bad, and this microtubular is not suitable for the cerebrovascular of small, flexible.
Number of patent application is the microtubular of 2004/0153049 the disclosed a kind of multiple structure of american documentation literature, comprise smooth liner, braiding skeleton and skin, but because the skeleton and the near-end of this microtubular distal portions do not have any difference, has only a kind of braiding structure, the pliability that influences distal end of catheter that can be bigger, and the inner layer material of this microtubular is also different in the hardness and the toughness of different sections, though can change the difference in hardness of far-end and near-end on the whole, can influence the smoothness of the operations of other apparatuses in pipe such as turn.
Number of patent application is that 2004/0147903 the disclosed a kind of external diameter of american documentation literature is tiny and softish applicable to cerebrovascular microtubular, though its Tip softness also has certain intensity, but the front-end and back-end inner chamber of this microtubular is different, embolism materials for delivering liquid may have good effect, and for carrying microcoils, the unobstructed property of the microtubular of two inner chambers is not so good.
The utility model content
In order to solve the problems referred to above of prior art, the purpose of this utility model provides a kind of tiny and crooked endovascular microtubular that is adapted to, and it can arrive the particularly cerebrovascular diseased region of blood vessel smoothly, reduces the injury to blood vessel.
To achieve these goals, this utility model provides a kind of microtubular that is used for vascular interventional treatment, the changeover portion that comprises inflexible proximal segment, hardness gradual change is connected with softish distal ports and with described distal ports and than the more softish head end of described distal ports, the variation of the external diameter tapering of described head end is dwindled.
As preferably, the profile of described head end is that " S " type, " J " type or angle are greater than the shapes of 0 degree less than 90 degree.
As preferably, described head end is provided with two development labellings that are separated from each other.
As preferably, described two development labellings are made by platinum or platinum-tungsten alloys.
As preferably, described microtubular has the diameter invariant smooth inner chamber that connects described proximal segment, changeover portion, distal ports and head end.
As preferably, described proximal segment and changeover portion are by being made up of to outer circular smooth internal layer, wire sheathing, rigid outer layer interior, described distal ports and head end are by being made up of to outer circular smooth internal layer, metal winding layer, soft outer layer interior, and the winding spacing of the metal winding layer of described head end is greater than the winding spacing of the metal winding layer of described distal ports.
As preferably, the smooth internal layer of described proximal segment and changeover portion and the smooth internal layer of described distal ports and head end are made by politef or perfluoroethylene-propylene.
As preferably, the external diameter of described proximal segment is constant, and the external diameter tapering of described changeover portion changes and dwindles, and the external diameter of described distal ports is constant, and the external diameter of described proximal segment is greater than the external diameter of described distal ports.
As preferably, described head end length is 3cm～10cm, and hardness is 20D～35D; Described distal ports length is 30cm～50cm, and hardness is 30D～45D; Transition section length is 5cm～20cm, and hardness reduces to described distal ports gradually from described proximal segment; Described proximal segment length is 80cm～100cm, and hardness is 50D～80D.
As preferably, scribble the hydrophilic coating of forming by polyethylene glycol oxide, polyvinylpyrrolidone, polyvinyl alcohol or hyaluronic acid on the outer surface of described microtubular.
The beneficial effects of the utility model are, because microtubular has super softish head end, therefore are adapted to particularly cerebrovascular of tiny and crooked blood vessel, can arrive the particularly cerebrovascular diseased region of blood vessel smoothly, reduce the injury to blood vessel; Owing to have diameter invariant smooth inner chamber, in the time of can guaranteeing other apparatuses such as turn by microtubular high smoothness can be arranged.
Description of drawings
Fig. 1 is the structural representation that is used for the microtubular of vascular interventional treatment of the present utility model;
Fig. 2 be among Fig. 1 proximal segment along A-A to cross sectional representation;
Fig. 3 be among Fig. 1 distal ports along B-B to cross sectional representation.
The specific embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
As shown in Figure 1 to Figure 3, the microtubular that is used for vascular interventional treatment of present embodiment, the changeover portion 3 that comprises inflexible proximal segment 2, hardness gradual change is connected with softish distal ports 4 and with described distal ports and than the described distal ports head end 5 of soft (ultra-soft) more, (varied slightly) dwindled in the external diameter tapering variation of described head end 5.Proximal segment 2 is connected with base 1.The resistance that the head end 5 of the ultra-soft that this external diameter tapering changes both can reduce in blood flow passes through to reach easily, the damage to blood vessel can be dropped to minimum again.
The profile of described head end 5 can be spent the arbitrary shapes of spending less than 90 greater than 0 for " S " type, " J " type or angle, and is selected according to actual needs.
Described head end 5 is provided with development labelling 6 and the development labelling 7 that is separated from each other, and their platinums or platinum-tungsten alloys are made, and at a distance of about 3cm, development labelling 6 and development labelling 7 can make things convenient for the doctor to operate.
Described microtubular has the diameter invariant smooth inner chamber that connects described proximal segment 2, changeover portion 3, distal ports 4 and head end 5, in the time of can guaranteeing other apparatuses such as turn by microtubular high smoothness can be arranged.Be that whole microtubular has from proximal segment 2 to head end 5 the circular smooth internal layer 21 that runs through, smooth internal layer 21 is made by politef or perfluoroethylene-propylene.Described proximal segment 2 and changeover portion 3 are by being made up of to outer circular smooth internal layer 21, wire sheathing 22, rigid outer layer 23 interior, described distal ports 4 is by being made up of to outer circular smooth internal layer 21, metal winding layer 42, soft outer layer 43 interior, described head end 5 is made up of smooth internal layer 21, metal winding layer 42, soft outer layer 43 equally, difference be the winding spacing of metal winding layer 42 of described head end 5 greater than the winding spacing of the metal winding layer 42 of described distal ports 4, thereby make head end 5 more soft than distal ports 4.
The material of wire sheathing 22 (metallic framework) and metal winding layer 42 can be suitable metals such as rustless steel, Nitinol, chromium, cobalt alloy, and wire sheathing 22 is the open weave shape, with the rigidity of raising proximal segment 2, thereby has good propelling movement.Metal winding layer 42 is spiral-shaped for what twine, and the winding spacing of the metal winding layer 42 of described head end 5 is greater than the winding spacing of the metal winding layer 42 of described distal ports 4, to improve the pliability of head end 5, make head end 5 can better comply with blood flow direction, the lesion locations of the tiny curved blood vessel of easier arrival.
Rigid outer layer 23 is selected the material that hardness is high slightly, intensity is bigger for use, as nylon 12, PEBAX, polyethylene, polypropylene, polrvinyl chloride etc.Soft outer layer 43 can be selected the material that hardness is lower, pliability is good for use, as nylon, polyurethane, fluoroplastics etc., preferably its resin of selecting for use can with organic solvent compatibility such as DMSO, so just conveying that can be safe some contain the liquid embolic material of organic solvent, as Onyx glue.
The external diameter of described proximal segment 2 is constant, and the external diameter tapering variation of described changeover portion 3 is dwindled, and the external diameter of described distal ports 4 is constant, and the external diameter of described proximal segment 2 is greater than the external diameter of described distal ports 4.Thereby make that microtubular 5 is the trend of once progressively dwindling from proximal segment 2 to head end on external diameter.
Described head end 5 length are 3cm～10cm, and hardness is 20D～35D; Described distal ports 4 length are 30cm～50cm, and hardness is 30D～45D; Changeover portion 3 length are 5cm～20cm, and hardness reduces to described distal ports 4 gradually from described proximal segment 2; Described proximal segment 2 length are 80cm～100cm, and hardness is 50D～80D.
Scribble the hydrophilic coating of forming by polyethylene glycol oxide, polyvinylpyrrolidone, polyvinyl alcohol or hyaluronic acid on the whole outer surface of described microtubular, make its easier walking in blood vessel.
Present embodiment be used for vascular interventional treatment, the particularly microtubular of cerebrovascular interventional therapy, compare with prior art, have the head end 5 softer than distal ports 4, be equivalent to be provided with one section more, therefore be adapted to tiny and crooked and manage particularly cerebrovascular, can arrive the particularly cerebrovascular diseased region of blood vessel smoothly, reduce injury blood vessel; And, owing to have diameter invariant smooth inner chamber, in the time of can guaranteeing other apparatuses such as turn by microtubular high smoothness can be arranged.
Above embodiment is an exemplary embodiment of the present utility model only, is not used in restriction this utility model, and protection domain of the present utility model is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement this utility model in essence of the present utility model and protection domain, this modification or be equal to replacement and also should be considered as dropping in the protection domain of the present utility model.
Claims (10)
1. microtubular that is used for vascular interventional treatment, the changeover portion and the softish distal ports that comprise inflexible proximal segment, hardness gradual change, it is characterized in that, also comprise being connected with described distal ports and that the external diameter tapering of described head end changes and dwindles than the more softish head end of described distal ports.
2. the microtubular that is used for vascular interventional treatment according to claim 1 is characterized in that, the profile of described head end is that " S " type, " J " type or angle are greater than the shape of 0 degree less than 90 degree.
3. the microtubular that is used for vascular interventional treatment according to claim 1 is characterized in that, described head end is provided with two development labellings that are separated from each other.
4. the microtubular that is used for vascular interventional treatment according to claim 3 is characterized in that, described two development labellings are made by platinum or platinum-tungsten alloys.
5. the microtubular that is used for vascular interventional treatment according to claim 1 is characterized in that, described microtubular has the diameter invariant smooth inner chamber that connects described proximal segment, changeover portion, distal ports and head end.
6. the microtubular that is used for vascular interventional treatment according to claim 5, it is characterized in that, described proximal segment and changeover portion are by being made up of to outer circular smooth internal layer, wire sheathing, rigid outer layer interior, described distal ports and head end are by being made up of to outer circular smooth internal layer, metal winding layer, soft outer layer interior, and the winding spacing of the metal winding layer of described head end is greater than the winding spacing of the metal winding layer of described distal ports.
7. the microtubular that is used for vascular interventional treatment according to claim 6 is characterized in that, the smooth internal layer of described proximal segment and changeover portion and the smooth internal layer of described distal ports and head end are made by politef or perfluoroethylene-propylene.
8. the microtubular that is used for vascular interventional treatment according to claim 6, it is characterized in that the external diameter of described proximal segment is constant, the external diameter tapering variation of described changeover portion is dwindled, the external diameter of described distal ports is constant, and the external diameter of described proximal segment is greater than the external diameter of described distal ports.
9. the microtubular that is used for vascular interventional treatment according to claim 8 is characterized in that, described head end length is 3cm～10cm, and hardness is 20D～35D; Described distal ports length is 30cm～50cm, and hardness is 30D～45D; Transition section length is 5cm～20cm, and hardness reduces to described distal ports gradually from described proximal segment; Described proximal segment length is 80cm～100cm, and hardness is 50D～80D.
10. the microtubular that is used for vascular interventional treatment according to claim 1 is characterized in that, scribbles the hydrophilic coating of being made up of polyethylene glycol oxide, polyvinylpyrrolidone, polyvinyl alcohol or hyaluronic acid on the outer surface of described microtubular.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020113561XU CN201596219U (en) | 2010-02-09 | 2010-02-09 | Micro-catheter for vascular interventional therapy |
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| CN201020113561XU CN201596219U (en) | 2010-02-09 | 2010-02-09 | Micro-catheter for vascular interventional therapy |
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| CN201596219U true CN201596219U (en) | 2010-10-06 |
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Cited By (21)
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|---|---|---|---|---|
| CN102488578A (en) * | 2011-12-14 | 2012-06-13 | 湖南瑞康通科技发展有限公司 | Quick blood flow reconstruction device and preparation method thereof |
| CN102488577A (en) * | 2011-12-14 | 2012-06-13 | 湖南埃普特医疗器械有限公司 | Intravascular guiding wire positioning device and manufacturing method thereof |
| CN103372260A (en) * | 2012-04-19 | 2013-10-30 | 上海凯旦医疗科技有限公司 | Multi-segment controllable-bending interventional catheter |
| CN108355226A (en) * | 2018-01-30 | 2018-08-03 | 张利勇 | A kind of microtubular for vascular interventional treatment |
| CN108837276A (en) * | 2018-07-18 | 2018-11-20 | 董鹏 | Dedicated reverse microtubular |
| CN109069180A (en) * | 2016-04-14 | 2018-12-21 | 柯惠有限合伙公司 | Tissue with regulating mechanism removes conduit |
| CN109259827A (en) * | 2018-09-05 | 2019-01-25 | 北京爱琳医疗科技有限公司 | The processing method of external member of performing the operation and puncture needle external member, puncture needle external member |
| CN110430913A (en) * | 2017-03-02 | 2019-11-08 | 柯惠有限合伙公司 | Flexible tip conduit |
| CN110585560A (en) * | 2019-10-31 | 2019-12-20 | 上海加奇生物科技苏州有限公司 | Protection tube special for protecting head end shape of interventional catheter |
| CN110694136A (en) * | 2019-09-20 | 2020-01-17 | 山东百多安医疗器械有限公司 | Tunnel type is through peripheral central venous catheter and auxiliary device thereof |
| CN110947077A (en) * | 2019-12-02 | 2020-04-03 | 心凯诺医疗科技(上海)有限公司 | High-flexibility distal access guiding catheter and preparation method thereof |
| CN112672783A (en) * | 2018-09-19 | 2021-04-16 | 泰尔茂株式会社 | Catheter assembly |
| CN113198084A (en) * | 2021-04-26 | 2021-08-03 | 深圳麦普奇医疗科技有限公司 | Micro-catheter for peripheral vascular interventional therapy |
| CN113350659A (en) * | 2016-02-24 | 2021-09-07 | 禾木（中国）生物工程有限公司 | Neurovascular catheter with enhanced flexibility |
| CN113855992A (en) * | 2020-06-30 | 2021-12-31 | 微创神通医疗科技（上海）有限公司 | A catheter |
| CN114642814A (en) * | 2020-12-17 | 2022-06-21 | 微创神通医疗科技（上海）有限公司 | Medical catheter and preparation method thereof |
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| CN115644990A (en) * | 2022-12-09 | 2023-01-31 | 上海珩畅医疗科技有限公司 | Aspiration catheter for interventional procedures |
| US11766539B2 (en) | 2019-03-29 | 2023-09-26 | Incept, Llc | Enhanced flexibility neurovascular catheter |
| US11819228B2 (en) | 2019-12-18 | 2023-11-21 | Imperative Care, Inc. | Methods and systems for treating a pulmonary embolism |
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2010
- 2010-02-09 CN CN201020113561XU patent/CN201596219U/en not_active Expired - Lifetime
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| CN102488577A (en) * | 2011-12-14 | 2012-06-13 | 湖南埃普特医疗器械有限公司 | Intravascular guiding wire positioning device and manufacturing method thereof |
| CN102488577B (en) * | 2011-12-14 | 2014-12-24 | 湖南埃普特医疗器械有限公司 | Intravascular guiding wire positioning device and manufacturing method thereof |
| CN102488578A (en) * | 2011-12-14 | 2012-06-13 | 湖南瑞康通科技发展有限公司 | Quick blood flow reconstruction device and preparation method thereof |
| CN103372260A (en) * | 2012-04-19 | 2013-10-30 | 上海凯旦医疗科技有限公司 | Multi-segment controllable-bending interventional catheter |
| CN113350659A (en) * | 2016-02-24 | 2021-09-07 | 禾木（中国）生物工程有限公司 | Neurovascular catheter with enhanced flexibility |
| US11432841B2 (en) | 2016-04-14 | 2022-09-06 | Covidien Lp | Tissue-removing catheter with adjustment mechanism |
| CN109069180A (en) * | 2016-04-14 | 2018-12-21 | 柯惠有限合伙公司 | Tissue with regulating mechanism removes conduit |
| US11596768B2 (en) | 2017-03-02 | 2023-03-07 | Covidien Lp | Flexible tip catheter |
| CN110430913A (en) * | 2017-03-02 | 2019-11-08 | 柯惠有限合伙公司 | Flexible tip conduit |
| CN110430913B (en) * | 2017-03-02 | 2022-04-08 | 柯惠有限合伙公司 | Flexible tip catheter |
| CN108355226A (en) * | 2018-01-30 | 2018-08-03 | 张利勇 | A kind of microtubular for vascular interventional treatment |
| US11850349B2 (en) | 2018-07-06 | 2023-12-26 | Incept, Llc | Vacuum transfer tool for extendable catheter |
| CN108837276A (en) * | 2018-07-18 | 2018-11-20 | 董鹏 | Dedicated reverse microtubular |
| CN109259827B (en) * | 2018-09-05 | 2019-09-20 | 北京爱琳医疗科技有限公司 | The processing method of external member of performing the operation and puncture needle external member, puncture needle external member |
| CN109259827A (en) * | 2018-09-05 | 2019-01-25 | 北京爱琳医疗科技有限公司 | The processing method of external member of performing the operation and puncture needle external member, puncture needle external member |
| CN112672783A (en) * | 2018-09-19 | 2021-04-16 | 泰尔茂株式会社 | Catheter assembly |
| US11766539B2 (en) | 2019-03-29 | 2023-09-26 | Incept, Llc | Enhanced flexibility neurovascular catheter |
| CN110694136A (en) * | 2019-09-20 | 2020-01-17 | 山东百多安医疗器械有限公司 | Tunnel type is through peripheral central venous catheter and auxiliary device thereof |
| CN110585560A (en) * | 2019-10-31 | 2019-12-20 | 上海加奇生物科技苏州有限公司 | Protection tube special for protecting head end shape of interventional catheter |
| CN110947077A (en) * | 2019-12-02 | 2020-04-03 | 心凯诺医疗科技(上海)有限公司 | High-flexibility distal access guiding catheter and preparation method thereof |
| US11553935B2 (en) | 2019-12-18 | 2023-01-17 | Imperative Care, Inc. | Sterile field clot capture module for use in thrombectomy system |
| US11633272B2 (en) | 2019-12-18 | 2023-04-25 | Imperative Care, Inc. | Manually rotatable thrombus engagement tool |
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| US11819228B2 (en) | 2019-12-18 | 2023-11-21 | Imperative Care, Inc. | Methods and systems for treating a pulmonary embolism |
| CN113855992A (en) * | 2020-06-30 | 2021-12-31 | 微创神通医疗科技（上海）有限公司 | A catheter |
| WO2022127536A1 (en) * | 2020-12-17 | 2022-06-23 | 微创神通医疗科技（上海）有限公司 | Medical catheter and preparation method therefor |
| CN114642814A (en) * | 2020-12-17 | 2022-06-21 | 微创神通医疗科技（上海）有限公司 | Medical catheter and preparation method thereof |
| CN113198084A (en) * | 2021-04-26 | 2021-08-03 | 深圳麦普奇医疗科技有限公司 | Micro-catheter for peripheral vascular interventional therapy |
| CN115644990A (en) * | 2022-12-09 | 2023-01-31 | 上海珩畅医疗科技有限公司 | Aspiration catheter for interventional procedures |
| CN115644990B (en) * | 2022-12-09 | 2024-04-23 | 上海珩畅医疗科技有限公司 | Aspiration catheter for interventional procedures |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20101006 |