CN219921812U - Plasma hydrophilic guide wire - Google Patents
Plasma hydrophilic guide wire Download PDFInfo
- Publication number
- CN219921812U CN219921812U CN202320632661.0U CN202320632661U CN219921812U CN 219921812 U CN219921812 U CN 219921812U CN 202320632661 U CN202320632661 U CN 202320632661U CN 219921812 U CN219921812 U CN 219921812U
- Authority
- CN
- China
- Prior art keywords
- guide wire
- cylindrical elastic
- elastic piece
- inner core
- hydrophilic
- 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.)
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000011247 coating layer Substances 0.000 claims abstract description 34
- 229920000642 polymer Polymers 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 238000007750 plasma spraying Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 4
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920002614 Polyether block amide Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000011527 polyurethane coating Substances 0.000 claims description 3
- 238000002616 plasmapheresis Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 4
- 210000004204 blood vessel Anatomy 0.000 description 4
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000003073 embolic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 230000002792 vascular Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model discloses a plasma hydrophilic guide wire, which comprises a guide wire inner core, a water-based polymer coating layer coated outside the guide wire inner core, and a cylindrical elastic piece arranged between the guide wire inner core and the water-based polymer coating layer; the front end of the guide wire inner core is provided with a cylindrical elastic piece sleeving part, and the cylindrical elastic piece is sleeved on the cylindrical elastic piece sleeving part; at least one end of the cylindrical elastic piece is welded and fixed at the sleeve joint part of the cylindrical elastic piece, and the outer diameter of the cylindrical elastic piece is smaller than that of the guide wire inner core; a hydrophilic coating is arranged on the surface of the water-based polymer coating layer; the hydrophilic coating is sprayed on the water-based polymer coating layer through a plasma spraying process; the length of the tungsten wire spring is the same as that of the sleeve joint part of the cylindrical elastic piece, so that the water-based polymer coating layer is tightly attached to the tungsten wire spring, and the guide wire inner core, the tungsten wire spring and the water-based polymer coating layer are connected into a whole; and the plasma spraying technology has high efficiency, material saving, uniform hydrophilic coating and good stability.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a plasma hydrophilic guide wire.
Background
With the development of vascular interventional medical devices, more and more medical guide wires, such as micro guide wires, various stents or delivery sheaths of embolic protectors, are now developed, and the guide wires are required to be carried into various blood vessels of a human body and play a role in guiding other devices into a designated position in operation; in order to improve the blood compatibility of such medical guidewires that come into contact with blood and reduce the resistance of the guidewires to travel in blood vessels, it is necessary to treat the surface of such guidewires to render the surface hydrophilic; however, most of the existing guide wires have hydrophilic capability, which is represented by dipping a hydrophilic coating on the surface of the guide wire, and the surface of the hydrophilic coating is not uniform.
Disclosure of Invention
The utility model aims to solve the defects in the prior art and provides a plasma hydrophilic guide wire.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a plasma hydrophilic guide wire, which comprises a guide wire inner core, a water-based polymer coating layer coated outside the guide wire inner core, and a cylindrical elastic piece arranged between the guide wire inner core and the water-based polymer coating layer; the front end of the guide wire inner core is provided with a cylindrical elastic piece sleeving part, and the cylindrical elastic piece is sleeved on the cylindrical elastic piece sleeving part; at least one end of the cylindrical elastic piece is welded and fixed at the sleeve joint part of the cylindrical elastic piece, and the outer diameter of the cylindrical elastic piece is smaller than the outer diameter of the guide wire inner core; the surface of the water-based polymer coating layer is provided with a hydrophilic coating; the hydrophilic coating is sprayed on the aqueous polymer coating layer through a plasma spraying process.
Preferably, the cylindrical elastic piece is a tungsten wire spring.
Preferably, the guide wire inner core is a nickel-titanium alloy core rod.
Preferably, the aqueous polymer coating layer comprises a polyurethane coating layer, a nylon coating layer and a block polyether amide elastomer coating layer.
Preferably, the diameter of the spring wire of the tungsten wire spring is between 0.03 and 0.05mm, and the inner diameter of the tungsten wire spring is 0.3mm.
Preferably, the outer diameter of the tungsten wire spring is the same as the outer diameter of the wire guide inner core, and the length of the tungsten wire spring is the same as the length of the cylindrical elastic piece.
Preferably, the hydrophilic coating comprises a modified hydrophilic PTFE hydrophilic coating.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model designs a plasma hydrophilic guide wire, and the arrangement of the cylindrical elastic piece can also ensure that the sleeve joint part of the cylindrical elastic piece has enough elastic force and can be bent for use; the tungsten wire spring has a good deformation function and enough strength, and can effectively ensure the softness of the sleeve joint part of the cylindrical elastic piece; the tungsten wire spring is welded on the sleeve joint part of the cylindrical elastic piece, so that the connection stability of the tungsten wire spring and the sleeve joint part of the cylindrical elastic piece is ensured, the integrity among the guide wire inner core, the tungsten wire spring and the water-based polymer coating layer is improved, and the potential safety hazard of use caused by the generation of a gap between the sleeve joint part of the cylindrical elastic piece and the water-based polymer coating layer after the tungsten wire spring moves is avoided; the outer diameter of the tungsten wire spring is the same as that of the inner core of the guide wire, and the length of the tungsten wire spring is the same as that of the sleeve joint part of the cylindrical elastic piece, so that the water-based polymer coating layer is tightly attached to the tungsten wire spring, and the inner core of the guide wire, the tungsten wire spring and the water-based polymer coating layer are connected into a whole; the sleeve joint part of the cylindrical elastic piece is enhanced by bending the circuitous blood vessel and the cavity, so that the success rate of the operation is improved, the operation time is shortened, and the pain of a patient is reduced; and the plasma spraying technology has high efficiency, material saving, uniform hydrophilic coating and good stability.
Drawings
Fig. 1 is a schematic cross-sectional view of a structure according to the present utility model.
Legend description:
1. a guide wire inner core, 2, a water-based polymer coating layer,
3. a tubular elastic piece, 4, a hydrophilic coating,
11. the sleeve joint part of the cylindrical elastic piece.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, a plasma hydrophilic guide wire comprises a guide wire inner core 1, a water-based polymer coating layer 2 coated outside the guide wire inner core, and a cylindrical elastic member 3 arranged between the guide wire inner core 1 and the water-based polymer coating layer 2; the front end of the guide wire inner core 1 is provided with a cylindrical elastic piece sleeving part 11, and the cylindrical elastic piece 3 is sleeved on the cylindrical elastic piece sleeving part 11; at least one end of the cylindrical elastic piece 3 is welded and fixed at the sleeve joint part 11 of the cylindrical elastic piece, and the outer diameter of the cylindrical elastic piece 3 is smaller than the outer diameter of the guide wire inner core 1; the surface of the water-based polymer coating layer 2 is provided with a hydrophilic coating layer 4; the hydrophilic coating 4 is sprayed onto the aqueous polymer coating 2 by a plasma spraying process.
The cylindrical elastic piece 3 is a tungsten wire spring, and the arrangement of the cylindrical elastic piece 3 can also ensure that the sleeve joint part 11 of the cylindrical elastic piece has enough elastic force and can be bent for use; the tungsten wire spring has a good deformation function and enough strength, and can effectively ensure the softness of the sleeve joint part 11 of the cylindrical elastic piece; at least one end of the cylindrical elastic piece 3 is welded and fixed on the cylindrical elastic piece sleeving part 11, and the tungsten wire spring is welded on the cylindrical elastic piece sleeving part 11, so that the connection stability of the tungsten wire spring and the cylindrical elastic piece sleeving part 11 is ensured, the integrity among the wire guide inner core 1, the tungsten wire spring and the water-based polymer coating layer 2 is improved, and the potential safety hazard of use caused by the generation of a gap between the cylindrical elastic piece sleeving part 11 and the water-based polymer coating layer 2 after the tungsten wire spring moves is avoided.
In another specific embodiment, two ends of the tungsten wire spring are welded and connected with the cylindrical elastic piece sleeving part 11, so that the connection stability is further improved, and the influence of the tungsten wire spring on the softness of the cylindrical elastic piece sleeving part 11 is reduced to the greatest extent because the connection points are at two ends, the cylindrical elastic piece sleeving part 11 still has good deformation performance, and the medical use requirement is met.
The guide wire inner core 1 is a nickel titanium alloy core rod, the water-based polymer coating layer 2 comprises a polyurethane coating layer, a nylon coating layer and a block polyether amide elastomer coating layer, the diameter of a spring wire of the tungsten wire spring is between 0.03 and 0.05mm, the inner diameter of the tungsten wire spring is 0.3mm, the outer diameter of the tungsten wire spring is the same as the outer diameter of the guide wire inner core 1, the length of the tungsten wire spring is the same as the length of the cylindrical elastic piece 3, and the hydrophilic coating 4 comprises a modified hydrophilic PTFE coating.
The outer diameter of the tungsten wire spring is the same as that of the guide wire inner core 1, and the length of the tungsten wire spring is the same as that of the sleeve joint part 11 of the cylindrical elastic piece, so that the water-based polymer coating layer 2 is tightly attached to the tungsten wire spring, and the guide wire inner core 1, the tungsten wire spring and the water-based polymer coating layer 2 are connected into a whole; the cylindrical elastic member socket 11 enhances the success rate of the operation by bending the detoured blood vessel and the lumen, shortens the operation time, and reduces the pain of the patient.
The manufacturing method of the plasma hydrophilic guide wire comprises the following steps: 1. preparing 1 nickel-titanium memory alloy wire rod with the length of 150cm and the outer diameter of 0.5 mm; 1 tungsten filament with the diameter of 0.03-0.05 mm; 2. one end of a nickel-titanium memory alloy wire with the length of 150cm and the outer diameter of 0.5mm is fed between a grinding wheel and a guide wheel of a coreless grinding machine, and is ground into a taper section with the front end of 30cm, and the outer diameter of the foremost end of the taper section is 0.15mm; 3. winding tungsten wire with diameter of 0.03-0.05 mm on a core rod with outer diameter of 0.3mm to form a tungsten wire spring; 4. taking the tungsten wire spring 2 in the step 3, wherein the length is 12cm, sleeving the tungsten wire spring from the ground end of the nickel-titanium memory alloy wire, and fixing the front end and the rear end of the tungsten wire spring by laser welding; 5. the nickel-titanium memory alloy wire wound with the tungsten wire spring is coated with a layer of polymer; 6. the modified hydrophilic PTFE material is sprayed on the aqueous polymer coating layer by a plasma spraying technology.
The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.
Claims (7)
1. The plasma hydrophilic guide wire is characterized by comprising a guide wire inner core, a water-based polymer coating layer coated outside the guide wire inner core and a cylindrical elastic piece arranged between the guide wire inner core and the water-based polymer coating layer; the front end of the guide wire inner core is provided with a cylindrical elastic piece sleeving part, and the cylindrical elastic piece is sleeved on the cylindrical elastic piece sleeving part; at least one end of the cylindrical elastic piece is welded and fixed at the sleeve joint part of the cylindrical elastic piece, and the outer diameter of the cylindrical elastic piece is smaller than the outer diameter of the guide wire inner core; the surface of the water-based polymer coating layer is provided with a hydrophilic coating; the hydrophilic coating is sprayed on the aqueous polymer coating layer through a plasma spraying process.
2. The plasma hydrophilic guide wire according to claim 1, wherein the cylindrical elastic member is a tungsten wire spring.
3. The plasma hydrophilic guide wire according to claim 1, wherein the guide wire inner core is a nickel titanium alloy core rod.
4. The plasmapheresis guidewire of claim 1, wherein the aqueous polymer coating comprises a polyurethane coating, a nylon coating, a block polyether amide elastomer coating.
5. The plasma hydrophilic guide wire according to claim 2, wherein the diameter of the spring wire of the tungsten wire spring is 0.03-0.05 mm, and the inner diameter of the tungsten wire spring is 0.3mm.
6. The plasma hydrophilic guide wire according to claim 5, wherein the outer diameter of the tungsten wire spring is the same as the outer diameter of the guide wire inner core, and the length of the tungsten wire spring is the same as the length of the cylindrical elastic member.
7. The plasma hydrophilic guidewire of claim 1, wherein the hydrophilic coating comprises a modified hydrophilic PTFE hydrophilic coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320632661.0U CN219921812U (en) | 2023-03-28 | 2023-03-28 | Plasma hydrophilic guide wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320632661.0U CN219921812U (en) | 2023-03-28 | 2023-03-28 | Plasma hydrophilic guide wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219921812U true CN219921812U (en) | 2023-10-31 |
Family
ID=88485709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320632661.0U Active CN219921812U (en) | 2023-03-28 | 2023-03-28 | Plasma hydrophilic guide wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219921812U (en) |
-
2023
- 2023-03-28 CN CN202320632661.0U patent/CN219921812U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |