CN112426611A - Deformable micro-guide wire - Google Patents
Deformable micro-guide wire Download PDFInfo
- Publication number
- CN112426611A CN112426611A CN202011389812.1A CN202011389812A CN112426611A CN 112426611 A CN112426611 A CN 112426611A CN 202011389812 A CN202011389812 A CN 202011389812A CN 112426611 A CN112426611 A CN 112426611A
- Authority
- CN
- China
- Prior art keywords
- guide wire
- micro
- metal spring
- polymer
- core rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002184 metal Substances 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 14
- 229920000642 polymer Polymers 0.000 claims abstract description 14
- 239000002861 polymer material Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 7
- 239000011247 coating layer Substances 0.000 claims abstract description 6
- 239000000696 magnetic material Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005253 cladding Methods 0.000 claims abstract 2
- 229920001477 hydrophilic polymer Polymers 0.000 claims 1
- 210000004204 blood vessel Anatomy 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 235000006369 Emex spinosa Nutrition 0.000 description 1
- 241000719150 Hemicaranx leucurus Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000009443 Vascular Malformations Diseases 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 210000001627 cerebral artery Anatomy 0.000 description 1
- 210000004298 cerebral vein Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000004351 coronary vessel Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007917 intracranial administration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0127—Magnetic means; Magnetic markers
-
- 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
- A61M25/09—Guide wires
- A61M25/09016—Guide wires with mandrils
-
- 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
- A61M25/09—Guide wires
- A61M25/09016—Guide wires with mandrils
- A61M25/09033—Guide wires with mandrils with fixed mandrils, e.g. mandrils fixed to tip; Tensionable wires
-
- 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
- A61M25/09—Guide wires
- A61M2025/09058—Basic structures of guide wires
- A61M2025/09083—Basic structures of guide wires having a coil around a core
-
- 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
- A61M25/09—Guide wires
- A61M2025/09133—Guide wires having specific material compositions or coatings; Materials with specific mechanical behaviours, e.g. stiffness, strength to transmit torque
Abstract
The invention relates to a deformable micro-guide wire for medical intravascular minimally invasive intervention. The device consists of a high-molecular magnetic core rod, a metal spring, a guide wire, a water-based polymer outer coating layer, a micro-jack, a power supply, a rotating wheel, a control panel and the like; the polymer magnetic core rod is formed by mixing giant magnetostrictive material powder or super-strong permanent magnetic material powder with a polymer material, or circular magnetic sheets are distributed in the polymer material at intervals and are flexible and easy to deform, the polymer magnetic core rod and the metal spring are cylindrical or semi-cylindrical, the left part and the right part of the semi-cylindrical are respectively cylindrical, and the polymer magnetic core rod and the metal spring are synthesized into a cylinder and have axial flexibility and transverse flexibility; the head end of the metal spring is welded with the guide wire and then extends to the tail end, and the other end of the spring is welded with the guide wire and then directly extends to the tail end; the outer cladding is malleable. After being electrified, the micro guide wire can perform stretching, vibration and steering actions under the action of control current so as to pass through a tortuous and complex blood vessel section.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a deformable micro-guide wire for intravascular interventional therapy.
Background
A micro guidewire is an important interventional medical instrument for guiding an interventional device such as a micro catheter through a tortuous small blood vessel and into a diseased blood vessel cavity in a minimally invasive intravascular interventional treatment technology. The guiding device plays an irreplaceable guiding role in guiding the super-selective access to coronary arteries of the heart, intracranial small cerebral artery and vein, spinal vascular malformation, small blood supply vessels of tumors and the like. The micro guide wire is used for conveying interventional medical instruments such as a micro catheter and the like to a diseased part, so that the ideal micro guide wire has good propelling performance, and is not easy to deform after bending when passing through and propelling a bent blood vessel; the slender micro-guide wire requires that the head end can actively stretch and deform so as to be conveniently and quickly led into a diseased blood vessel and pass through a blood vessel bending section; due to the thin wall of small vessels, the micro-wires must minimize friction with and possible damage to the vessel wall surface. Most of the current products can meet the requirements of push performance, hydrophilicity and deformation resistance, but no product with a head end capable of actively stretching, deforming and steering exists, and intervention treatment fails due to the fact that a blood vessel is too tortuous and complex and a guide wire cannot be in place clinically, so that a micro guide wire with a head end capable of actively stretching and deforming is urgently needed at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for realizing a deformable micro guide wire for intravascular intervention, which is mature in technology and can be realized under the current process.
The micro-guidewire comprises: the device comprises a high-molecular magnetic core rod, a metal spring, a guide wire, a water-based polymer outer coating layer, a micro-jack, a control panel, a rotating wheel and a power supply; the polymer magnetic core rod is formed by mixing giant magnetostrictive material powder or super-strong permanent magnetic material powder with a polymer material, or circular magnetic sheets are distributed in the polymer material at intervals and have transverse bending and axial flexibility; the polymer magnetic core rod and the metal spring are cylindrical or semi-cylindrical; the outer coating layers are wrapped on the outer sides of the springs and are hydrophilic and have certain ductility. The head end of the metal spring is welded with the guide wire, the guide wire extends to the tail end, the other end of the spring is welded with the guide wire and then directly extends to the tail end to be connected into a micro-jack outside, the micro-jack is connected with a control panel through a wire, a power supply is arranged in the control panel, and the rotating wheel inputs a control signal to the control panel.
In the invention, the polymer magnetic core rod and the externally wrapped metal spring are combined into the core technology of the invention. The material composition can be realized in two modes, one mode is formed by mixing a giant magnetostrictive material and a high polymer material, and the other mode is formed by mixing a super-strong permanent magnetic material and a high polymer material. The material combination also has two realization modes, which can be formed by mixing magnetic material powder and a high polymer material, or can be formed by discontinuously and uniformly arranging the circular magnetic sheets in the high polymer material, the magnetic core rod can be a single cylinder or a combination of two semi-cylinders, the single cylinder can be axially stretched, the combination of the two semi-cylinders can be transversely bent and axially stretched, and the above various different combination schemes can be used in different clinical application environments.
The working principle of the invention is that for a single cylinder scheme, a metal spring generates a magnetic field by controlling current under the control of a rotating wheel, the magnetic field acts on a magnetic core to enable a material to extend, shorten or vibrate, so that the head end of a guide wire extends, shortens or reciprocates, when the guide wire extends, the radial supporting force is reduced due to the lengthening of the spring and the material, so that the flexibility is enhanced, and the guide wire is easier to bend, so that the capability of a complicated blood vessel through tortuosity is increased, and when the guide wire is shortened, the radial supporting force is enhanced due to the shortening of the spring and the material, so that the hardness is enhanced, and the guide; to the scheme of two halfcylinders, two metal spring produce different magnetic fields through two kinds of control currents under the control of control runner, and the magnetic field can make the material at both ends produce different deformations after acting on giant magnetostrictive material or superstrong permanent-magnet material to can make seal wire head end extension, shorten, control and turn to or vibrate, the seal wire of single cylinder relatively, the mobility is stronger, changes in the blood vessel through the circuitous complicacy.
Compared with the existing product, the invention has the advantages that the external power supply is introduced to reasonably utilize the metal spring of the original micro-guide wire to enable the metal spring to become the electromagnetic coil, so that the metal spring interacts with the internal magnetic material, the micro-guide wire has the capability of automatically deforming, the change to the existing product is minimum, the batch production is easy to realize, and the micro-guide wire is an innovation point of a micro-guide wire device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only schematic diagrams of the working principle of some embodiments of the present invention, and do not represent actual products, and for those skilled in the art, a more practical drawing can be derived from the drawings without creative efforts.
Fig. 1 is a schematic diagram of a longitudinal cross-sectional structure of a single-cylinder embodiment 1 of the present invention, wherein (1) a polymer magnetic core rod, (2) a metal spring, (3) a guide wire, (4) a water-based polymer outer coating layer, (5) a micro-jack, (6) a power supply, (7) a rotating wheel, and (8) a control plate.
FIG. 2 is a schematic diagram showing a longitudinal cross-sectional structure of a single cylinder embodiment 2 of the present invention (the figure numbers are the same as those in FIG. 1).
FIG. 3 is a schematic diagram of the longitudinal section structure of the double-cylinder embodiment of the present invention (the figure numbers are the same as those in FIG. 1).
FIG. 4 is a cross-sectional schematic view of a dual-cylinder embodiment of the present invention (the figures are numbered as in FIG. 1).
Detailed Description
The following detailed description of the preferred embodiments of the present invention, with reference to fig. 1 and 3, is provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thus to clearly and clearly define the scope of the present invention.
Before the use, place little seal wire in tortuous blood vessel department earlier, when manual unable continuation march, get rid of little jack visor, connect the control panel through the connecting wire, open the power, rotate the runner, send control signal, make the seal wire head end stretch, contract, vibrate the various actions that are suitable for the march (to the seal wire of double-cylinder, still can realize the crooked steering about, at the seal wire head end action, operating personnel promotes little seal wire and continues to move ahead until through the tortuous blood vessel section.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all the modifications made by the present invention in the content of the description and the accompanying drawings, such as increasing the number of magnetic core rods, or equivalent process transformation, wireless energy transmission, etc., or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (2)
1. A deformable micro-guide wire for intravascular intervention, characterized in that: the deformable micro-guidewire comprises: the device comprises a high-molecular magnetic core rod (1), a metal spring (2), a guide wire (3), a water-based polymer outer coating layer (4), a micro-jack (5), a power supply (6), a rotating wheel (7), a control panel (8) and the like; the high-molecular magnetic core rod (1) is wrapped by a metal spring (2), the metal spring (2) is sleeved outside the high-molecular magnetic core rod (1), a hydrophilic polymer outer coating layer (4) is sleeved outside the metal spring (2), a guide wire (3) is connected with the metal spring (2), is led out from the tail end of the micro guide wire and is connected into a micro jack (5) outside, the micro jack (5) is connected with a control panel (8) through a lead, and a power supply (6) and a rotating wheel (7) are connected to the control panel (8).
2. The deformable micro-guidewire for intravascular intervention according to claim 1, wherein: the polymer magnetic core rod material is characterized in that the material is formed by mixing giant magnetostrictive material powder or super-strong permanent magnetic material powder with a polymer material, or round magnetic sheets are distributed in the polymer material at intervals, and are soft and easy to deform; the polymer magnetic core rod and the metal spring are cylindrical or semi-cylindrical, the left part and the right part of the semi-cylindrical are respectively provided with one, and the polymer magnetic core rod and the metal spring are synthesized into a cylinder shape and have axial flexibility and transverse flexibility; the head end of the metal spring is welded with the guide wire and then extends to the tail end, and the other end of the spring is welded with the guide wire and then directly extends to the tail end; the outer cladding is hydrophilic and malleable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011389812.1A CN112426611A (en) | 2020-12-02 | 2020-12-02 | Deformable micro-guide wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011389812.1A CN112426611A (en) | 2020-12-02 | 2020-12-02 | Deformable micro-guide wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112426611A true CN112426611A (en) | 2021-03-02 |
Family
ID=74698433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011389812.1A Withdrawn CN112426611A (en) | 2020-12-02 | 2020-12-02 | Deformable micro-guide wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112426611A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253023A (en) * | 2022-07-19 | 2022-11-01 | 清华大学 | Magnetic soft navigation robot and preparation method and control method thereof |
| WO2024039694A1 (en) * | 2022-08-16 | 2024-02-22 | Paul Ram H | Mri compatible interventional medical devices and related methods |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100052670A1 (en) * | 2008-08-29 | 2010-03-04 | Southwest Research Institute | Magnetostrictive Sensor Probe for Guided-Wave Inspection and Monitoring of Wire Ropes/Cables and Anchor Rods |
| US20130296692A1 (en) * | 2012-05-07 | 2013-11-07 | Guy P. Vanney | Medical device guidewire with helical cutout and coating |
| US20160199621A1 (en) * | 2013-08-14 | 2016-07-14 | Fort Wayne Metals Research Products Corp | Magnetically insertable wire materials |
| CN108601924A (en) * | 2015-11-30 | 2018-09-28 | 巴德股份有限公司 | The equipment of the medical procedure being applied in vascular system including seal wire and conduit and the method for using the equipment |
| US20190054277A1 (en) * | 2016-02-22 | 2019-02-21 | Arizona Board Of Regents On Behalf Of Arizona State University | Adjustable guidewire |
| CN109862934A (en) * | 2016-10-18 | 2019-06-07 | 阿克拉伦特公司 | Augmentation system |
| CN110141409A (en) * | 2019-06-25 | 2019-08-20 | 中国医学科学院阜外医院 | Yarn guide component is used in a kind of conveying of branch type overlay film frame |
-
2020
- 2020-12-02 CN CN202011389812.1A patent/CN112426611A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100052670A1 (en) * | 2008-08-29 | 2010-03-04 | Southwest Research Institute | Magnetostrictive Sensor Probe for Guided-Wave Inspection and Monitoring of Wire Ropes/Cables and Anchor Rods |
| US20130296692A1 (en) * | 2012-05-07 | 2013-11-07 | Guy P. Vanney | Medical device guidewire with helical cutout and coating |
| US20160199621A1 (en) * | 2013-08-14 | 2016-07-14 | Fort Wayne Metals Research Products Corp | Magnetically insertable wire materials |
| CN108601924A (en) * | 2015-11-30 | 2018-09-28 | 巴德股份有限公司 | The equipment of the medical procedure being applied in vascular system including seal wire and conduit and the method for using the equipment |
| US20190054277A1 (en) * | 2016-02-22 | 2019-02-21 | Arizona Board Of Regents On Behalf Of Arizona State University | Adjustable guidewire |
| CN109862934A (en) * | 2016-10-18 | 2019-06-07 | 阿克拉伦特公司 | Augmentation system |
| CN110141409A (en) * | 2019-06-25 | 2019-08-20 | 中国医学科学院阜外医院 | Yarn guide component is used in a kind of conveying of branch type overlay film frame |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253023A (en) * | 2022-07-19 | 2022-11-01 | 清华大学 | Magnetic soft navigation robot and preparation method and control method thereof |
| CN115253023B (en) * | 2022-07-19 | 2024-04-09 | 清华大学 | Magnetic soft navigation robot and preparation method and control method thereof |
| WO2024039694A1 (en) * | 2022-08-16 | 2024-02-22 | Paul Ram H | Mri compatible interventional medical devices and related methods |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210302 |
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| WW01 | Invention patent application withdrawn after publication |