CN117861041A - Microcatheter - Google Patents
Microcatheter Download PDFInfo
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- CN117861041A CN117861041A CN202410031608.4A CN202410031608A CN117861041A CN 117861041 A CN117861041 A CN 117861041A CN 202410031608 A CN202410031608 A CN 202410031608A CN 117861041 A CN117861041 A CN 117861041A
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- 230000003014 reinforcing effect Effects 0.000 claims abstract description 65
- 230000008093 supporting effect Effects 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 7
- 238000005452 bending Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 210000004204 blood vessel Anatomy 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000003902 lesion Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- 230000002792 vascular Effects 0.000 description 4
- 230000006355 external stress Effects 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 208000024172 Cardiovascular disease Diseases 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 208000026106 cerebrovascular disease Diseases 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000002526 effect on cardiovascular system Effects 0.000 description 2
- 230000001613 neoplastic effect Effects 0.000 description 2
- 238000002560 therapeutic procedure Methods 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 200000000007 Arterial disease Diseases 0.000 description 1
- 206010019468 Hemiplegia Diseases 0.000 description 1
- 201000007201 aphasia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 208000019553 vascular disease Diseases 0.000 description 1
- 208000037997 venous disease Diseases 0.000 description 1
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- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention provides a microcatheter, which belongs to the technical field of microcatheters; the microcatheter comprises a handle and a catheter main body, wherein the handle is connected with the catheter main body, the catheter main body at least comprises an inner layer, an outer layer and a supporting layer arranged between the inner layer and the outer layer, a tubular reinforcing layer is arranged on the outer side wall of the outer layer of the catheter main body, a notch is arranged on the reinforcing layer, and the notch is discontinuously arranged on the reinforcing layer and is used for improving the torsion control performance of the catheter main body; mainly solves the technical problem that the prior microcatheter has slow response to torsion operation, which causes difficult operation.
Description
Technical Field
The invention belongs to the technical field of micro-catheters, and particularly relates to a micro-catheter.
Background
In recent years, along with the continuous increase of the number of people suffering from cardiovascular and cerebrovascular diseases and neoplastic diseases and the continuous increase of the death rate, the higher disability rate causes most patients to leave symptoms such as hemiplegia, aphasia and the like, and brings great challenges to clinical operation.
The vascular intervention operation has the advantages of small trauma, low reaction and quick recovery, has the targeting characteristic, can effectively treat vascular diseases, and is a preferred treatment mode for treating cardiovascular and cerebrovascular diseases in part of fields. Vascular intervention refers to a method for diagnosing and treating a lesion site by puncturing a blood vessel, and placing a guide wire and a catheter into a vascular cavity under the guidance of image equipment. The vascular interventional therapy technique is a new therapeutic method, and is suitable for arterial diseases, venous diseases, neoplastic diseases and the like.
The existing pipe body part applied to the interventional operation microcatheter is generally composed of an inner polymer layer, an outer polymer layer and a supporting layer fixedly attached between the inner polymer layer and the outer polymer layer, wherein the supporting layer is generally formed by weaving metal wires and is used for supporting the microcatheter to form a pipeline structure, but the supporting layer formed by the metal wire weaving mode is insufficient in supporting force in the pushing process of the microcatheter, and in addition, slippage is easy to occur between the metal wires, so that when the distal end of the microcatheter is required to be twisted in the operating process, the torque control force is transmitted slowly by the microcatheter, and the distal end of the microcatheter cannot quickly respond to the condition of proximal twisting operation, thereby causing operation difficulty.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to provide a microcatheter to solve the technical problem that the conventional microcatheter is difficult to operate due to slow response to torsion operation.
In order to achieve the above object, the microcatheter of the present invention provides the following technical solutions:
the utility model provides a microcatheter, includes handle, pipe main part, the handle is connected with the pipe main part, the pipe main part includes inlayer, skin and the supporting layer of setting between inlayer and skin at least, be provided with tubular enhancement layer on the pipe main part lateral wall, laid the incision that increases enhancement layer pliability on the enhancement layer, the incision sets up on the enhancement layer intermittently for increase the accuse nature of turning round of pipe main part.
As a further optimized technical scheme, the incisions are arranged along the circumferential direction of the reinforcing layer and penetrate through the reinforcing layer; the plurality of incisions are arranged at intervals along the axial direction of the reinforcing layer, and one incision is arranged in the same circumferential direction.
As a further preferred solution, the angle at which the incisions extend in the circumferential direction of the reinforcement layer is substantially between 90 ° and 180 °.
As a further optimized technical scheme, reaming structures are arranged at two ends of each incision.
As a further optimized technical scheme, the reaming structure comprises a flare section extending from two side walls of the notch to the extension direction in an inclined manner and an equal-diameter section connected with the flare section, and the equal-diameter section extends from the flare section to one end deviating from the notch.
As a further optimized solution, the plurality of incisions are arranged in a spiral wound along the reinforcement layer.
As a further optimized technical scheme, the incisions are in a straight line shape which is distributed along the axial direction and penetrates through the reinforcing layer, and a plurality of the incisions are arranged along the axial direction of the reinforcing layer in a staggered manner.
As a further optimized technical scheme, the incisions comprise a first incision and a second incision, the first incision and the second incision are arc shapes formed along the circumferential direction of the reinforcing layer, the first incision and the second incision are arranged in a staggered mode, the length of the first incision is larger than that of the second incision, and the circumferences of the first incision and the second incision are symmetrically arranged.
As a further optimized technical scheme, the ends of the first incision and the second incision are respectively provided with an axial hole extending along the axial direction of the reinforcing layer.
As a further optimized technical scheme, the far end of the reinforcing layer is fixedly provided with a soft elastic section, and the soft elastic section is made of TPU materials.
The beneficial effects are that: according to the invention, the tubular reinforcing layer is arranged on the outer side wall of the catheter main body, and the incision is arranged on the reinforcing layer, so that the bending performance of the reinforcing layer is increased on the basis of increasing the overall supporting performance of the catheter main body, the overall supporting performance of the catheter main body is not independently dependent on the supporting layer woven by the metal wires, but the torsion control performance of the catheter main body is increased through the reinforcing layer, and the micro-catheter can be controlled to easily reach the lesion position of a patient; and because the reinforcing layer is of an integral pipe body structure, the integral performance is better when the reinforcing layer bears torsion control force, and the response time is shorter, so that the convenience of operation is improved, and the operation efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. Wherein:
FIG. 1 is a schematic view showing the overall structure of a microcatheter according to example 1 of the present invention;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
FIG. 3 is a schematic view of the reinforcement layer structure of the microcatheter of example 1 of the present invention;
FIG. 4 is an enlarged schematic view of the notch of FIG. 3;
FIG. 5 is a schematic front view of the reinforcement layer structure of the microcatheter of example 2 of the present invention;
FIG. 6 is a schematic perspective view of the reinforcing layer structure of the microcatheter of example 2 of the present invention;
FIG. 7 is a schematic front view of the reinforcement layer structure of the microcatheter of example 3 of the present invention;
FIG. 8 is a schematic perspective view of the reinforcement layer structure of the microcatheter of example 3 of the present invention;
FIG. 9 is a schematic front view of the reinforcement layer structure of example 4 of the microcatheter of the present invention;
FIG. 10 is a schematic perspective view of the reinforcing layer structure of example 4 of the microcatheter of the present invention.
In the figure: 1. a handle; 2. a catheter body; 201. an inner layer; 202. an outer layer; 203. a support layer; 204. a soft elastic section; 3. an internal stress diffusion layer; 4. an external stress diffusion layer; 5. a reinforcing layer; 501-504 represent cuts in different embodiments (where the cut of the first embodiment is 501, the cut of the second embodiment is 502, the cut of the third embodiment is 503, and the cut of the fourth embodiment is 504) on the reinforcement layer, respectively; 5011. a flare section; 5012. a constant diameter section; 5041. an axial bore.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
It should be further noted that, in the present invention, "distal" refers collectively to the end that is remote from the operator during the operation, and "proximal" refers to the end that is closer to the operator, as opposed to the end.
The invention provides a microcatheter, which is characterized in that a reinforcing layer is arranged on the outer side of a catheter main body of the microcatheter to increase the overall support of the catheter main body, and notches are formed in the reinforcing layer, so that the flexibility of the reinforcing layer is increased, the overall performance of the catheter main body is better when the catheter main body bears torque control force, the response time is shorter, and the convenience of operation is further increased.
Example 1
As shown in fig. 1 and 2, a microcatheter comprises a handle 1 and a catheter main body 2, wherein the handle 1 is connected with the catheter main body 2 through an internal stress diffusion layer 3, and an external stress diffusion layer 4 is arranged outside the connection position of the internal stress diffusion layer 3 and the handle 1; the internal stress diffusion layer 3 and the external stress diffusion layer 4 facilitate the handle 1 to transmit the operating force to the catheter body 2, so that the catheter body 2 is conveniently operated by the handle 1 to perform corresponding actions in the blood vessel.
Specifically, as shown in fig. 3 and 4, the catheter body 2 includes at least an inner layer 201, an outer layer 202, and a support layer 203 disposed between the inner layer 201 and the outer layer 202, and the support layer 203 is a wire braid structure. The inner layer 201 is made of PTFE (i.e. polytetrafluoroethylene), the inner cavity of the catheter main body 2 is made of PTFE, so that the inner cavity of the catheter main body 2 has good lubricity, and the supporting layer 203 of the wire braided structure can enable the catheter main body 2 to have certain supportability, but when the microcatheter establishes a passage to reach a lesion position in a surgical process, the microcatheter sometimes needs to cross a complicated bent blood vessel, the direction of the microcatheter needs to be changed in the process so as to smoothly pass through the blood vessel to reach the lesion position, and at the moment, the microcatheter supported by the supporting layer 203 of the wire braided structure only cannot quickly respond to torque, so that in the invention, the tubular reinforcing layer 5 is made of nickel-titanium alloy, and has certain elasticity and bending property, and the arrangement of the reinforcing layer 5 increases the supportability and the integrity of the catheter main body 2 as a whole, so that the catheter main body 2 has good torque response speed.
In order to further increase the flexibility of the reinforcing layer 5, the reinforcing layer 5 is provided with the incisions 501, and the purpose of the incisions 501 is to ensure that the reinforcing layer 5 has good bending properties on the basis of ensuring a certain supporting property of the catheter body 2, but it is obvious that not all the incisions 501 achieve the object of the invention, for example, if the incisions 501 are continuously spirally provided on the reinforcing layer 5, the reinforcing layer 5 is made into a spiral spring-like structure, and it is obvious that when a torque is given to the reinforcing layer 5, the torque causes the reinforcing layer 5 to deform in the radial direction, and the response of the reinforcing layer 5 to the torque is not effectively increased. Therefore, in order to ensure that the reinforcing layer 5 has integrity while simultaneously ensuring increased torque controllability of the catheter body 2, the incisions 501 need to be intermittently provided on the reinforcing layer 5.
In the present embodiment, the cutouts 501 are arc-shaped, and the cutouts 501 are provided through the reinforcing layer 5 in the circumferential direction of the reinforcing layer 5; the plurality of incisions 501 are arranged along the axial direction of the reinforcing layer 5 in a staggered manner, and one incision 501 is arranged along the same circumferential direction, so that the overall performance of the reinforcing layer 5 is better, and the good supporting performance of the reinforcing layer 5 is ensured. In this embodiment, the incisions 501 extend over an angle of approximately between 90 ° and 180 ° in the circumferential direction of the reinforcement layer 5, which range is to be understood here not to include end points, so that good bending properties of the reinforcement layer 5 are ensured.
Since the opposite two circumferentially extending side walls of the incision 501 will move relatively when the catheter body 2 is bent axially, at this time, the side walls at the two ends of the incision 501 connect the circumferentially extending side walls that move relatively, if the two ends of the incision 501 are end structures with equal diameters, under the support of the body of the reinforcing layer 5, the side walls at the two ends of the incision 501 will inevitably have micro tension, and the existence of tension at the two ends of each incision 501 will ultimately affect the bending performance of the whole reinforcing layer 5 to a certain extent, and in order to reduce the occurrence of such a situation, a reaming structure is provided at the two ends of each incision 501.
As shown in fig. 4, the reaming structure includes a flare section 5011 extending from two sidewalls of the notch 501 to extend obliquely outward, and a constant diameter section 5012 connected to the flare section 5011, wherein the constant diameter section 5012 extends from the flare section 5011 toward an end facing away from the notch 501. The existence of the reaming structure can enable the reinforcing layer 5 to transfer force better, and simultaneously reduce the micro tension at the tail end of the equal-diameter notch 501, namely reduce the resistance that the two circumferentially extending side walls can move relatively when the notches 501 are opposite, so that the bending performance of the reinforcing layer 5 is effectively improved. In other embodiments, the reaming structure may also be a circular hole having a diameter greater than the width of the cutout 501.
The reinforcing layer 5 is added to the whole body of the catheter main body 2, the hardness of the distal end of the catheter main body 2 is inevitably increased, and the distal end of the catheter main body 2 guides the whole body of the microcatheter to move forwards in the operation process, in order to avoid the damage to the blood vessel caused by the collision of the distal end of the catheter main body 2 with the increased hardness with the blood vessel in the process of moving the blood vessel, the soft elastic section 204 is fixedly arranged at the distal end of the reinforcing layer 5, and the soft elastic section 204 is made of TPU (polyurethane elastomer) material.
When the invention is specifically used, the reinforcing layer 5 is arranged on the outer side of the catheter main body 2 of the micro-catheter to increase the overall support of the catheter main body 2, and the intermittently arranged incisions 501 are arranged on the reinforcing layer 5, so that the flexibility of the reinforcing layer 5 is increased, the overall performance of the catheter main body 2 is better when the catheter main body is subjected to torsion control force, the response time is shortened, the transportation of instruments can be completed more quickly, and the operation is convenient.
Example 2
In this embodiment, almost all structures of the microcatheter are the same as those of embodiment 1, the only difference being that the slits 502 are in a straight line shape arranged along the axial direction of the reinforcing layer 5, and the plurality of slits 502 are arranged in a spiral wound manner along the reinforcing layer 5, as shown in fig. 5 and 6. The plurality of incisions 502 form the reinforcing layer 5 as a hollowed-out structure, so that the reinforcing layer 5 can also ensure good bending performance on the basis of ensuring certain supporting performance of the catheter main body 2.
Example 3
In this embodiment, almost all the structures of the microcatheter are the same as those of embodiment 1, the only difference being that the slits 503 are in a straight line shape extending through the reinforcing layer 5 in the axial direction, and the plurality of slits 503 are arranged at intervals in the axial direction of the reinforcing layer 5, as shown in fig. 7 and 8. The plurality of incisions 503 form the reinforcing layer 5 as a hollowed-out structure, so that the reinforcing layer 5 can also ensure good bending performance on the basis of ensuring certain supporting performance of the catheter main body 2.
Example 4
In this embodiment, almost all the structures of the microcatheter are the same as those of embodiment 1, the only difference is that the notch 504 includes a first notch and a second notch, the first notch and the second notch are both arc-shaped and open along the circumferential direction of the reinforcing layer 5, the first notch and the second notch are arranged in a staggered manner, the length of the first notch is greater than that of the second notch, and the first notch and the second notch are both symmetrically arranged along the circumferential direction. In addition, the first notch and the second notch are disposed near the position where the opposite ends of the first notch are opposite to each other when they are disposed, that is, for example, the two opposite positions where the opposite ends of the first notch are opposite to each other are the body structure of the reinforcing layer 5, so that the bending performance near the position inevitably meets the position where the notch 504 is provided, and in order to compensate the bending performance at the position, the second notch is disposed near the position where the opposite ends of the second notch are opposite to each other. This can increase the occupation ratio of the slit 504 in the circumferential direction of the reinforcing layer 5, so that the reinforcing layer 5 can also be ensured to have good bending performance on the basis of ensuring a certain supporting performance of the catheter main body 2.
In order to further increase the bending properties of the reinforcement layer 5, axial holes 5041 extending axially along the reinforcement layer 5 are provided at both the first and second cut ends. This axial hole 5041 may help the reinforcement layer 5 to transfer force better, making the microcatheter easier to twist.
Example 5
In this embodiment, almost all the structures of the microcatheter are the same as in embodiment 1, with the only difference that the reinforcing layer comprises a plurality of sections from the proximal end to the distal end, and each section may be provided with a type of incision, i.e., the above four embodiments may be combined with each other to form a reinforcing layer having various types.
It is to be understood that the above description is exemplary only and that the embodiments of the present application are not limited thereto.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a microcatheter, includes handle (1), pipe main part (2), handle (1) is connected with pipe main part (2), pipe main part (2) include inlayer (201), skin (202) and set up supporting layer (203) between inlayer (201) and skin (202) at least, a serial communication port, be provided with tubular enhancement layer (5) on pipe main part (2) skin (202) lateral wall, laid incision (501, 502, 503, 504) on enhancement layer (5), incision (501, 502, 503, 504) are interrupted to be set up on enhancement layer (5) for increase the accuse nature of turning round of pipe main part (2).
2. Microcatheter according to claim 1, characterized in that the incisions (501) are provided circumferentially through the reinforcement layer (5) along the reinforcement layer (5); the plurality of the incisions (501) are arranged along the axial direction of the reinforcing layer (5) in a staggered manner, and one incision (501) is arranged along the same circumferential direction.
3. Microcatheter according to claim 2, characterized in that the angle at which the incisions (501) extend circumferentially along the reinforcement layer (5) is substantially between 90 ° and 180 °.
4. A microcatheter according to claim 3, characterized in that a reaming structure is provided at both ends of each slit (501).
5. The microcatheter of claim 4, wherein the reaming structure comprises a flare section (5011) extending obliquely outward from both sidewalls of the cutout (501) and a constant diameter section (5012) connected to the flare section (5011), the constant diameter section (5012) continuing from the flare section (5011) toward an end facing away from the cutout (501).
6. Microcatheter according to claim 1, characterized in that a plurality of said incisions (502) are arranged in a spiral wound along said reinforcement layer (5).
7. Microcatheter according to claim 1, characterized in that the cut-out (503) is of rectilinear shape running through the reinforcement layer (5) in axial direction, a plurality of said cut-outs (503) being arranged axially staggered along the reinforcement layer (5).
8. Microcatheter according to claim 1, characterized in that the slits (504) comprise a first slit and a second slit, both of which are arc-shaped and open in the circumferential direction of the reinforcing layer (5), the first slit and the second slit being arranged in a staggered manner, the first slit being longer than the second slit, both of which are arranged symmetrically in the circumferential direction.
9. Microcatheter according to claim 8, characterized in that the first and the second cut ends are each provided with an axial hole (5041) extending axially along the stiffening layer (5).
10. Microcatheter according to any of claims 1-9, characterized in that the distal end of the stiffening layer (5) is fixedly provided with a soft elastic section (204), which soft elastic section (204) is made of TPU material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410031608.4A CN117861041A (en) | 2024-01-09 | 2024-01-09 | Microcatheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410031608.4A CN117861041A (en) | 2024-01-09 | 2024-01-09 | Microcatheter |
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| Publication Number | Publication Date |
|---|---|
| CN117861041A true CN117861041A (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410031608.4A Pending CN117861041A (en) | 2024-01-09 | 2024-01-09 | Microcatheter |
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| Country | Link |
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| CN (1) | CN117861041A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203153823U (en) * | 2013-03-18 | 2013-08-28 | 杭州启明医疗器械有限公司 | Outer sheath tube |
| US20180304040A1 (en) * | 2017-04-20 | 2018-10-25 | Covidien Lp | Catheter including an inner liner with a flexible distal section |
| CN109498957A (en) * | 2018-12-19 | 2019-03-22 | 深圳市业聚实业有限公司 | A kind of novel microtubular |
| US20190255290A1 (en) * | 2018-02-22 | 2019-08-22 | Scientia Vascular, Llc | Microfabricated catheter having an intermediate preferred bending section |
| CN111135425A (en) * | 2020-03-06 | 2020-05-12 | 广东博迈医疗器械有限公司 | Medical micro catheter |
| CN114099897A (en) * | 2020-08-28 | 2022-03-01 | 沛嘉医疗科技(苏州)有限公司 | Catheter and method of making same |
| US20220176075A1 (en) * | 2020-12-09 | 2022-06-09 | Creganna Unlimited Company | Articulating Shaft for a Steerable Catheter System, Catheter, and Fabrication Method |
| CN114618067A (en) * | 2020-12-08 | 2022-06-14 | 德普伊新特斯产品公司 | Catheter design for enhanced column strength |
| CN114768047A (en) * | 2022-04-18 | 2022-07-22 | 滨州职业学院 | Asymmetric self-adjusting bending guide pipe |
| CN115212425A (en) * | 2022-07-26 | 2022-10-21 | 上海晓旦生物科技有限公司 | Adjustable bent catheter |
| WO2023180414A1 (en) * | 2022-03-23 | 2023-09-28 | Msh Innovations Ab | Catheter, catheter handle and method of navigating a catheter |
| CN116899035A (en) * | 2023-07-14 | 2023-10-20 | 上海励楷科技有限公司 | Intracranial aspiration catheter |
-
2024
- 2024-01-09 CN CN202410031608.4A patent/CN117861041A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203153823U (en) * | 2013-03-18 | 2013-08-28 | 杭州启明医疗器械有限公司 | Outer sheath tube |
| US20180304040A1 (en) * | 2017-04-20 | 2018-10-25 | Covidien Lp | Catheter including an inner liner with a flexible distal section |
| US20190255290A1 (en) * | 2018-02-22 | 2019-08-22 | Scientia Vascular, Llc | Microfabricated catheter having an intermediate preferred bending section |
| CN109498957A (en) * | 2018-12-19 | 2019-03-22 | 深圳市业聚实业有限公司 | A kind of novel microtubular |
| CN111135425A (en) * | 2020-03-06 | 2020-05-12 | 广东博迈医疗器械有限公司 | Medical micro catheter |
| CN114099897A (en) * | 2020-08-28 | 2022-03-01 | 沛嘉医疗科技(苏州)有限公司 | Catheter and method of making same |
| CN114618067A (en) * | 2020-12-08 | 2022-06-14 | 德普伊新特斯产品公司 | Catheter design for enhanced column strength |
| US20220176075A1 (en) * | 2020-12-09 | 2022-06-09 | Creganna Unlimited Company | Articulating Shaft for a Steerable Catheter System, Catheter, and Fabrication Method |
| WO2023180414A1 (en) * | 2022-03-23 | 2023-09-28 | Msh Innovations Ab | Catheter, catheter handle and method of navigating a catheter |
| CN114768047A (en) * | 2022-04-18 | 2022-07-22 | 滨州职业学院 | Asymmetric self-adjusting bending guide pipe |
| CN115212425A (en) * | 2022-07-26 | 2022-10-21 | 上海晓旦生物科技有限公司 | Adjustable bent catheter |
| CN116899035A (en) * | 2023-07-14 | 2023-10-20 | 上海励楷科技有限公司 | Intracranial aspiration catheter |
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