CN115068789A - Smooth dissimilar metal core guide wire - Google Patents
Smooth dissimilar metal core guide wire Download PDFInfo
- Publication number
- CN115068789A CN115068789A CN202111232088.6A CN202111232088A CN115068789A CN 115068789 A CN115068789 A CN 115068789A CN 202111232088 A CN202111232088 A CN 202111232088A CN 115068789 A CN115068789 A CN 115068789A
- Authority
- CN
- China
- Prior art keywords
- core wire
- core
- nickel
- wire
- smooth
- 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.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 27
- 239000002184 metal Substances 0.000 title claims abstract description 27
- 229910001000 nickel titanium Inorganic materials 0.000 claims abstract description 59
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 claims abstract description 47
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005476 soldering Methods 0.000 claims abstract description 14
- 210000004204 blood vessel Anatomy 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 12
- 239000010935 stainless steel Substances 0.000 claims description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000008859 change Effects 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 12
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical group [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 229910000679 solder Inorganic materials 0.000 description 5
- 230000006378 damage Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910002593 Fe-Ti Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 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
- A61M25/09—Guide 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
- 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
- A61M2025/09175—Guide wires having specific characteristics at the distal tip
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention discloses a smooth dissimilar metal core guide wire which comprises a first core wire and a second core wire, wherein a nickel-titanium tube is sleeved on the outer surface of one end, opposite to the first core wire and the second core wire, of the first core wire and the second core wire, and the first core wire and the second core wire are fixed through the nickel-titanium tube; and the other end of the second core wire is provided with a circular head for preventing blood vessels from being damaged. After the first core wire and the second core wire are connected, the first core wire and the second core wire are welded through soldering tin, and the outer diameter of the soldering tin is consistent with that of the nickel-titanium tube after grinding, so that no obvious outer diameter change area exists in the area of the connecting tube, and the mechanical properties of the guide wire, such as supporting force, are smooth in transition in the connecting area. In addition, no obvious hollow area exists in the nickel-titanium tube, the core wire has no weak point of supporting force in the nickel-titanium tube and the adjacent area, and the outer diameter of the joint is kept consistent, so that the torque transmission is better.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a smooth dissimilar metal core guide wire.
Background
In minimally invasive interventional therapy, the guide wire has the function of establishing a channel for other medical instruments such as catheters, stents and the like. A practical performance requirement for a guidewire is that, first, the guidewire should have sufficient axial strength to be smoothly advanced to the intravascular target site without kinking. On the other hand, the guide wire also needs to be flexible enough to avoid damage to the vessel when advanced intravascularly. However, for the same material, compliance and support are generally two properties of one another, with one property being superior often implying a disadvantage of the other. The nickel-titanium alloy material is used as a core wire material of the distal end of the guide wire due to super elasticity and shape memory, so that the distal end of the guide wire has good flexibility; stainless steel materials are used for the guidewire proximal core wire material due to their high yield strength and young's modulus to provide strong support and push properties. Therefore, how to connect the nitinol core wire and the stainless steel core wire becomes a critical issue.
The existing methods for connecting nitinol core wire and stainless steel core wire mainly include two types, i.e., a connection tube connection method and a butt welding method. In the connection method of the connecting pipe in the prior art, because one end of the core wire needs to be ground into a cone in advance and a hollow part without the core wire exists in the pipe, the mechanical properties of the position and the adjacent area of the connecting pipe are unstable, and the clinical performance is possibly influenced. The butt welding technology needs to overcome the risk that brittle fracture is easy to occur at a welding position due to the fact that brittle Fe-Ti intermetallic compounds are easy to occur in a welding area, and in addition, the defects that a core wire is not easy to be coaxial and the like exist, so that the technology is complex and high in cost.
The existing guide wire technology for connecting core wires with different materials at two ends through a connecting pipe is generally connected with the connecting pipe after a connecting area of the core wires is ground into a cone shape, so that the outer diameter of the core wires is not uniform near the connecting pipe, in addition, the hollow position of a coreless wire section possibly appears in the center of the connecting pipe, and the hollow position of the connecting pipe and the position with thinner outer diameter have obvious weak strength, which possibly influences clinical performance.
In the medical guide wire and the method for welding and forming the head end thereof provided by CN111805108A, the connection method of the connecting tube is used because one end of the core wire needs to be pre-ground into a cone shape and a hollow part without the core wire exists in the tube, so that the mechanical properties of the position and the adjacent area of the connecting tube are unstable, which may affect the clinical performance.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a smooth dissimilar metal core guide wire.
In order to achieve the purpose, the invention adopts the following technical scheme: a smooth dissimilar metal core guide wire comprises a first core wire and a second core wire, wherein a nickel-titanium tube is sleeved on the outer surface of one end, opposite to the first core wire and the second core wire, of the first core wire and the second core wire, the first core wire and the second core wire are fixed through the nickel-titanium tube, and a metal coil is arranged; and the other end of the second core wire is provided with a circular head for preventing blood vessels from being damaged.
As a further description of the above technical solution: the first core wire is made of stainless steel.
As a further description of the above technical solution: the second core wire is made of nickel-titanium alloy.
As a further description of the above technical solution: the opposite ends of the first core wire and the second core wire are step-shaped.
As a further description of the above technical solution: the cross section of the opposite end of the first core wire and the second core wire is the same as that of the inner circle of the nickel-titanium tube.
As a further description of the above technical solution: the step-shaped outer surface is embedded with the inner surface of the nickel-titanium pipe.
As a further description of the above technical solution: the opposite ends of the first core wire and the second core wire are jointed.
As a further description of the above technical solution: the section of the excircle of the nickel-titanium tube is the same as that of the core guide wire.
As a further description of the above technical solution: and both ends of the nickel-titanium tube are provided with soldering tin fillers.
As a further description of the above technical solution: the outer surface of the soldering tin filler is attached to one end, opposite to the first core wire and the second core wire, of the soldering tin filler.
The invention has the following beneficial effects:
1. the opposite ends of the first core wire and the second core wire are ground into step shapes, the step height is the same as the inner diameter of the nickel titanium tube, so that the core wires can be in contact embedding with the nickel titanium tube, the step head ends of the opposite sides of the first core wire and the second core wire are in contact, the two core wires are connected through the nickel titanium tube, the far end of the guide wire is sleeved with the metal coil, the far end of the guide wire is a circular head for releasing and damaging the blood vessel, and therefore the direct butt joint between the nickel titanium tube and the core wires is effectively guaranteed, the ends, which are different from the opposite ends of the first core wire and the second core wire, are ground into conical shapes, the outer diameter of the flat and straight sections is slightly larger than the inner diameter of the nickel titanium tube, and the first core wire and the second core wire are firmly embedded before welding respectively by applying a certain embedding force. And then the whole intensity of seal wire has been improved to reduce the operation degree of difficulty, improved medical personnel's work efficiency.
2. After the first core wire and the second core wire are connected, the first core wire and the second core wire are welded through soldering tin, and the outer diameter of the soldering tin is consistent with that of the nickel-titanium tube after grinding, so that no obvious outer diameter change area exists in the area of the connecting tube, and the mechanical properties of the guide wire, such as supporting force, are smooth in transition in the connecting area. In addition, no obvious hollow area exists in the nickel-titanium tube, the core wire has no weak point of supporting force in the nickel-titanium tube and the adjacent area, and the outer diameter of the joint is kept consistent, so that the torque transmission is better.
Drawings
FIG. 1 is a schematic view of the external structure of a smooth dissimilar metal core guidewire according to the present invention;
FIG. 2 is a schematic view of the internal structure of a smooth dissimilar metal core guidewire according to the present invention;
fig. 3 is a side view of the internal structure of a smooth dissimilar metal core guidewire according to the present invention.
Illustration of the drawings: 11. a first core wire; 12. a second core filament; 2. a nickel titanium tube; 3. a metal coil; 4. a circular head; 5. and (4) solder filler.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, one embodiment of the present invention is provided: a smooth dissimilar metal core guide wire comprises a first core wire 11 and a second core wire 12, wherein a nickel-titanium tube 2 is sleeved on the outer surface of one end, opposite to the first core wire 11 and the second core wire 12, of the first core wire 11 and the second core wire 12, the first core wire 11 and the second core wire 12 are fixed through the nickel-titanium tube 2, and a metal coil 3 is arranged; is assembled on the outer surface of the other end of the second core wire 12, and the other end of the second core wire 12 is assembled with a circular head 4 for preventing blood vessel damage.
The guide wire is composed of two core wires made of different materials, wherein the two core wires are made of stainless steel materials and nickel-titanium alloy materials respectively, the two core wires are connected through a nickel-titanium tube 2, a metal coil 3 is sleeved at the far end of the guide wire, and a circular head 4 for preventing blood vessels from being damaged is arranged at the far end of the guide wire. The interface diagram of the nitinol tube area is shown in fig. 2, the opposite sides of the first core wire 11 and the second core wire 12 are respectively ground into a step shape, the size of the head end of the step is close to the inner diameter of the nitinol tube 2, so that the core wire can be contacted and embedded with the nitinol tube 2, and the head ends of the steps of the opposite sides of the first core wire 11 and the second core wire 12 are contacted. The outer diameters of the two sections of core wires are the same as the outer diameter of the connecting pipe. The opposite side of the nickel-titanium tube 2 and the first core wire 11 and the second core wire 12 is added with the soldering tin filler 5, and a laser welding mode is adopted, so that the nickel-titanium tube 2, the first core wire 11 and the second core wire 12 are firmly connected, no obvious gap exists at the joint, and the outer diameter of the soldering tin position is consistent with the outer diameter of the nickel-titanium tube 2 through grinding.
Referring to fig. 2-3, one embodiment provided by the present invention: the first core wire 11 is made of stainless steel.
The second core wire 12 is made of nitinol.
The opposite ends of the first core wire 11 and the second core wire 12 are stepped.
The cross section of the opposite ends of the first core wire 11 and the second core wire 12 is the same as the cross section of the inner circle of the nitinol tube 2.
The step-shaped outer surface is embedded with the inner surface of the nickel titanium pipe 2.
The first core wire 11 and the second core wire 12 are attached to each other at opposite ends.
Based on the above embodiment, the difference is that the inside of the nitinol tube 2 is coated with the adhesive, so that the inside of the nitinol tube 2 is bonded and fastened with the first core wire 11 and the second core wire 12, and the connection strength is increased.
Referring to fig. 2-3, one embodiment provided by the present invention: the section of the excircle of the nickel-titanium tube 2 is the same as that of the core guide wire 1.
Both ends of the nickel titanium tube 2 are fitted with solder fillers 5.
Based on the above embodiments, the difference is that the first core wire 11 and the second core wire 12 are connected to the tube edge of the nitinol tube 2 by solder through adding the solder filler 5.
Referring to fig. 3, an embodiment of the present invention provides: the outer surface of the solder filler 5 is attached to the opposite ends of the first core wire 11 and the second core wire 12.
Based on the above embodiment, the difference lies in that the opposite ends of the first core wire 11 and the second core wire 12 are ground into a cone shape, the outer diameter of the straight section is slightly larger than the inner diameter of the nickel-titanium tube 2, and the first core wire 11 and the second core wire 12 are firmly embedded with the core wire 3 before welding by applying a certain embedding force. Thus, fitting strength other than welding strength can be provided.
The working principle is as follows: the staff is through the seal wire that the core silk of two kinds of different materials makes up, and two sections core silks are connected through nickel titanium pipe 2, and wherein the metal coil 3 is established to seal wire distal end cover, and seal wire distal end is the circular head 4 of injury prevention blood vessel. The interface diagram of the nickel-titanium tube region is shown in fig. 2, the opposite sides of the first core wire 11 and the second core wire 12 are respectively ground into a step shape, the size of the head end of the step is close to the inner diameter of the nickel-titanium tube 2, so that the core wires can be in contact engagement with the nickel-titanium tube 2, and the head ends of the steps on the opposite sides of the first core wire 11 and the second core wire 12 are in contact. The outer diameters of the two sections of core wires are the same as the outer diameter of the connecting pipe. The nickel-titanium tube 2 is added with the soldering tin filler 5 on the side opposite to the first core wire 11 and the second core wire 12, the nickel-titanium tube 2 is firmly connected with the first core wire 11 and the second core wire 12 in a laser welding mode, no obvious gap exists at the joint, and the outer diameter of the soldering tin position is consistent with the outer diameter of the nickel-titanium tube 2 through grinding.
The difference lies in that the inside of the nickel-titanium tube 2 is coated with adhesive, so that the inside of the nickel-titanium tube 2 is bonded and fastened with the first core wire 11 and the second core wire 12, and the connecting strength is increased.
The difference lies in that the first core wire 11 and the second core wire 12 are connected with the tube edge of the nickel titanium tube 2 by soldering tin filler 5.
The difference lies in that the opposite ends of the first core wire 11 and the second core wire 12 are ground into a cone shape, the outer diameter of the straight section is slightly larger than the inner diameter of the nickel-titanium tube 2, and the first core wire 11 and the second core wire 12 are firmly embedded with the core wire 3 before welding by applying certain embedding force. Thus, fitting strength other than welding strength can be provided.
And then guarantee medical personnel when using, the condition that the seal wire can not break.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions and improvements to part of the technical features of the foregoing embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A smooth dissimilar metal core guidewire, characterized by; the wire fixing device comprises a first core wire (11) and a second core wire (12), wherein a nickel-titanium tube (2) is sleeved on the outer surface of one end, opposite to the first core wire (11) and the second core wire (12), of the first core wire (11), and the first core wire (11) and the second core wire (12) are fixed through the nickel-titanium tube (2); a metal coil (3); is assembled on the outer surface of the other end of the second core wire (12), and the other end of the second core wire (12) is assembled with a circular head (4) for preventing blood vessels from being damaged.
2. The smooth dissimilar metal core guidewire of claim 1, wherein: the first core wire (11) is made of stainless steel.
3. A smooth dissimilar metal core guidewire as claimed in claim 2, wherein: the second core wire (12) is made of nickel-titanium alloy.
4. The smooth dissimilar metal core guidewire of claim 1, wherein: the opposite ends of the first core wire (11) and the second core wire (12) are step-shaped.
5. A smooth dissimilar metal core guidewire as in claim 1, wherein: the cross section of the opposite end of the first core wire (11) and the second core wire (12) is the same as that of the inner circle of the nickel-titanium tube (2).
6. The smooth dissimilar metal core guidewire of claim 1, wherein: the step-shaped outer surface is embedded with the inner surface of the nickel-titanium pipe (2).
7. The smooth dissimilar metal core guidewire of claim 1, wherein: the opposite ends of the first core wire (11) and the second core wire (12) are jointed.
8. The smooth dissimilar metal core guidewire of claim 1, wherein: the section of the excircle of the nickel-titanium tube (2) is the same as that of the core guide wire (1).
9. A smooth dissimilar metal core guidewire as in claim 1, wherein: and both ends of the nickel-titanium tube (2) are provided with soldering tin fillers (5).
10. A smooth dissimilar metal core guidewire as claimed in claim 2, wherein: the outer surface of the soldering tin filler (5) is attached to the opposite ends of the first core wire (11) and the second core wire (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111232088.6A CN115068789B (en) | 2021-10-22 | 2021-10-22 | Smooth heterogeneous metal core guide wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111232088.6A CN115068789B (en) | 2021-10-22 | 2021-10-22 | Smooth heterogeneous metal core guide wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115068789A true CN115068789A (en) | 2022-09-20 |
| CN115068789B CN115068789B (en) | 2024-03-01 |
Family
ID=83246012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111232088.6A Active CN115068789B (en) | 2021-10-22 | 2021-10-22 | Smooth heterogeneous metal core guide wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115068789B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040102720A1 (en) * | 2002-11-25 | 2004-05-27 | Brad Kellerman | Enhanced method for joining two core wires |
| JP2004230141A (en) * | 2002-08-08 | 2004-08-19 | Terumo Corp | Guide wire |
| CN101642600A (en) * | 2009-08-28 | 2010-02-10 | 乐普（北京）医疗器械股份有限公司 | Guide wire |
| US20140200555A1 (en) * | 2013-01-17 | 2014-07-17 | Abbott Cardiovascular Systems, Inc. | Methods for counteracting rebounding effects during solid state resistance welding of dissimilar materials |
| CN107666936A (en) * | 2015-04-14 | 2018-02-06 | 艾博特心血管系统公司 | For improving the mechanism across the stiffness transition at different-metal material welding junction surface |
-
2021
- 2021-10-22 CN CN202111232088.6A patent/CN115068789B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004230141A (en) * | 2002-08-08 | 2004-08-19 | Terumo Corp | Guide wire |
| US20040102720A1 (en) * | 2002-11-25 | 2004-05-27 | Brad Kellerman | Enhanced method for joining two core wires |
| CN101642600A (en) * | 2009-08-28 | 2010-02-10 | 乐普（北京）医疗器械股份有限公司 | Guide wire |
| US20140200555A1 (en) * | 2013-01-17 | 2014-07-17 | Abbott Cardiovascular Systems, Inc. | Methods for counteracting rebounding effects during solid state resistance welding of dissimilar materials |
| CN107666936A (en) * | 2015-04-14 | 2018-02-06 | 艾博特心血管系统公司 | For improving the mechanism across the stiffness transition at different-metal material welding junction surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115068789B (en) | 2024-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11786130B2 (en) | Guidewire with internal pressure sensor | |
| JP4593288B2 (en) | Guidewire tip structure | |
| JP7043310B2 (en) | Catheter with improved loop contraction and larger contraction displacement | |
| US5067489A (en) | Flexible guide with safety tip | |
| CN102371024A (en) | Guidewire | |
| CA2516758A1 (en) | Elongated intracorporal medical device | |
| JP2012000195A (en) | Catheter | |
| JPWO2006126474A1 (en) | Medical wire | |
| CN102266638A (en) | Guidewire | |
| CN101642600A (en) | Guide wire | |
| WO2023051836A1 (en) | Self-expanding vascular stent | |
| US8864685B2 (en) | Wire guide having two safety wires | |
| JPH1157014A (en) | Guide wire | |
| CN115068789A (en) | Smooth dissimilar metal core guide wire | |
| CA1323539C (en) | Flexible guide with safety tip | |
| CN109664022A (en) | A kind of intravascular Nitinol seal wire and its welding method | |
| CN211434676U (en) | Balloon dilatation catheter | |
| CN210541719U (en) | Developing embolectomy support | |
| CN215874918U (en) | Medical catheter | |
| CN217015036U (en) | Medical micro guide wire | |
| EP3928824A1 (en) | Cutting apparatus and cutting balloon | |
| CN115106600A (en) | Composite guide wire with high coaxiality and uneasy kinking and welding method thereof | |
| CN220237540U (en) | Welding-free high-performance nickel-titanium memory alloy and stainless steel composite micro-guide wire | |
| CN215841127U (en) | Guide wire | |
| CN217015035U (en) | Guide wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |