CN213432488U - Double-end seal wire - Google Patents
Double-end seal wire Download PDFInfo
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- CN213432488U CN213432488U CN202020816557.3U CN202020816557U CN213432488U CN 213432488 U CN213432488 U CN 213432488U CN 202020816557 U CN202020816557 U CN 202020816557U CN 213432488 U CN213432488 U CN 213432488U
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- guide wire
- mandrel
- main body
- head end
- tail end
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Abstract
The utility model discloses a double-end guide wire, which consists of a mandrel, a guide wire main body, a guide wire head end and a guide wire tail end; the head end of the mandrel is of a long conical belt straight section structure, and the tail end of the mandrel is of a conical structure; the guide wire main body is a section of metal main body or polymer main body wound on the mandrel; the metal main body is a spring structure made of metal, and the surface of the metal main body can be coated with a hydrophobic coating; the main polymer body is an alternate spiral structure made of high polymer materials, and the surface of the main polymer body has alternate colors; the guide wire head end is a flexible structure coated on the mandrel head end, and the surface of the guide wire head end is coated with a functional coating; the tail end of the guide wire is a flexible structure coated on the surface of the tail end of the mandrel. The utility model discloses a seal wire tail end can reduce the damage to the endoscope, avoids aggravating patient's economic burden.
Description
Technical Field
The utility model belongs to the field of medical equipment, concretely relates to double-end seal wire.
Background
Nowadays, with the continuous development of interventional medicine, guide wires are more and more applied to the diagnosis and treatment process of a digestive endoscope or a urinary tract endoscope, and zebra stripes on the surfaces of the guide wires are easy to observe the movement or rotation of the guide wires, so that convenience is provided for the follow-up operations of catheter placement, stone removal and the like.
The traditional guide wire is a zebra guide wire which is wholly covered with zebra stripes, and although a mandrel with a fine taper is adopted in the traditional guide wire, the zebra stripes at the head end still easily damage the alimentary canal or the urinary tract, thereby bringing unnecessary pain to patients. Therefore, some zebra guide wires with soft structures replaced by zebra stripes at the head end are also available at present, and the damage to the digestive tract or the urinary tract can be reduced after the head end of the zebra guide wires is made of soft materials. However, the existing zebra guide wires have the defect that the tail end is too hard, so that the endoscope is easily damaged after the guide wires are placed, and a heavy economic burden is caused on a patient.
SUMMERY OF THE UTILITY MODEL
To the defect that prior art exists, the utility model provides a double-end seal wire, flexible structure is all adopted at head and the tail both ends to reduce the damage of seal wire tail end to the endoscope.
For solving the technical problem, realize above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
a double-end guide wire comprises a mandrel, a guide wire main body, a guide wire head end and a guide wire tail end.
The mandrel comprises a mandrel main body with a certain length, wherein two ends of the mandrel main body are respectively processed into a mandrel head end and a mandrel tail end with two tapered ends in a grinding mode, the mandrel head end is of a long conical belt straight section structure, the transition of the head end is smoother, the tracking performance is better, and the mandrel tail end is of a conical structure and can reduce the hardness of the tail end.
The guide wire main body is a section of metal main body or polymer main body which is wound on the mandrel main body and used as zebra stripes, and the guide wire main body is fixedly connected with the mandrel main body in a bonding or welding mode; the metal main body is a spring structure made of metal, and the surface of the spring structure is coated with a hydrophobic coating; the main polymer body is an alternate spiral structure made of high polymer materials, and the surface of the alternate spiral structure is provided with alternate colors which are convenient for observing the movement or rotation of the guide wire.
The guide wire head end is of a flexible structure coated on the surface of the mandrel head end, the guide wire head end is made of high polymer materials, the diameter of the inner side end of the guide wire head end is consistent with the overall diameter of the guide wire main body, the diameter of the outer side end of the guide wire head end is smaller than that of the guide wire main body, the outer side end of the guide wire head end is an arc-surface end, the guide wire head end is fixedly connected with the mandrel head end in a bonding or welding mode, the surface of the guide wire head end is coated with a functional coating, the functional coating is one or more of a hydrophilic coating, a hydrophobic coating or a bioactive coating, the hydrophilic coating can attract water molecules to form a ' gel ' surface on the surface of the guide wire head end so as to reduce the passing resistance of the guide wire, and the hydrophobic coating can inhibit the water molecules from forming a ' wax-shaped, the friction is reduced, the tracking performance of the guide wire is improved, and the surface of the guide wire head end can have the functions of anticoagulation, infection resistance and the like through the bioactive coating.
The guide wire tail end is coated on the flexible structure on the surface of the mandrel tail end, the guide wire tail end is made of a high polymer material, the overall diameter of the guide wire tail end is consistent with that of the guide wire main body, and the guide wire tail end is fixedly connected with the mandrel tail end in a bonding or welding mode.
Further, the mandrel is mainly made of a metal material commonly used in the art including a stainless steel material, an alloy material exhibiting pseudo-elasticity, or a super-elastic alloy material.
Further, the mandrel is preferably made of a superelastic alloy material, and since the superelastic alloy is relatively flexible and resilient and is less likely to undergo permanent bending, the guide wire made of the superelastic alloy mandrel has a sufficient bending property and an extremely high elastic recovery capability at the distal end portion, can improve the insertion performance of the guide wire into a complicated and bent blood vessel and can achieve more excellent operability, and can avoid the situation in which the operability is degraded due to permanent bending of the guide wire during use because the guide wire undergoes repeated bending deformation without undergoing permanent bending deformation.
Furthermore, the metal main body is made of stainless steel materials, and the metal main body is a flat wire spring or a round wire spring wound by stainless steel.
Further, the stainless steel material may be one of SUS304, SUS303, SUS316L, SUS316J1, SUS316J1L, SUS405, SUS430, SUS434, SUS444, SUS429, SUS430F, or SUS 302.
Further, the material of the polymer main body is a polymer material, and may be selected from one or more of polyolefin such as ethylene and polypropylene, polyvinyl chloride, polyester (PET, PBT, and the like), polyamide, polyimide, polyurethane, polystyrene, polycarbonate, silicone resin, fluoropolymer (PTFE, ETFE, PFA, and the like), or a composite material of these materials, latex rubber, silicone rubber, and nylon elastomer.
Further, the alternating color of the surface of the polymer main body is one or more of blue white, yellow black, yellow white, yellow green, blue black or black and white.
Further, the guide wire head end is mainly made of a high polymer material including a TPU material, and one of barium sulfate, tungsten or bismuth oxide and the like can be added according to a certain proportion.
Further, the guide wire tail end is mainly made of high molecular polymer including TPU material or PTFE material.
Furthermore, the hydrophilic coating is made of one or more of polyvinyl alcohol, polyvinylpyrrolidone, polyethylene glycol, polyacrylamide, polyacrylic acid, sodium polyacrylate, poly (2-hydroxyethyl methacrylate), maleic anhydride copolymer, ethylene-vinyl alcohol copolymer, 2-methacryloyloxyethyl phosphorylcholine or copolymer thereof, (2-hydroxyethyl methacrylate) -styrene block copolymer, synthetic polypeptide, collagen, hyaluronate, and cellulose copolymer.
Furthermore, the material of the hydrophobic coating is one or more of silicone, polytetrafluoroethylene or fluorinated ethylene propylene copolymer.
Further, the bioactive coating can adopt functional coatings with anticoagulation, anti-infection and the like.
The utility model has the advantages that:
1. the utility model discloses a seal wire tail end is soft structure, can reduce the damage to the endoscope, avoids causing heavy economic burden for patient, accomplishes people oriented.
2. The utility model discloses a conical structural design that the mode of grinding was processed into is all adopted at the head and the tail both ends of dabber, and its head end is long conical band straight section structure, and the transition is more level and smooth to make the pursuit performance of seal wire head end better, its tail end is the conical structure of gradual change, can reduce hardness, thereby make the tail end of seal wire can be better with the cooperation performance of other apparatus, insert more conveniently.
3. The utility model discloses a seal wire main part can adopt the spring structure that is formed by the metal coiling to make the support performance of seal wire main part better, increase of service life.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.
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 application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a cross-sectional view of the double-ended guide wire of the present invention;
fig. 2 is a schematic structural view of the mandrel of the double-ended guide wire of the present invention;
FIG. 3 is a schematic structural view of the double-ended guide wire of the present invention using a metal body;
fig. 4 is a schematic structural view of the double-ended guide wire of the present invention when the polymer main body is adopted.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. The description as set forth herein is intended to provide a further understanding of the invention and forms a part of this application and the exemplary embodiments and descriptions thereof are presented for purposes of illustration and description and are not intended to limit the invention in any way.
Referring to fig. 1, the double-ended guide wire is composed of a mandrel 4, a guide wire main body 2, a guide wire head end 3 and a guide wire tail end 1.
Referring to fig. 2, the mandrel 4 includes a mandrel main body 401 having a certain length, two ends of the mandrel main body 401 are respectively machined into a mandrel head end 402 and a mandrel tail end 403 with two tapered ends by grinding, wherein the mandrel head end 402 is a long conical belt straight section structure, the head end transition is smoother, the tracking performance is better, and the mandrel tail end 403 is a conical structure, which can reduce the hardness of the tail end.
The mandrel 4 is mainly made of a stainless steel material, an alloy material exhibiting pseudo-elasticity, or a super-elastic alloy material, which is a metal material commonly used in the art.
Wherein, the mandrel 4 can be made of stainless steel material selected from SUS304, SUS303, SUS316L, SUS316J1, SUS316J1L, SUS405, SUS430, SUS434, SUS444, SUS429, SUS430F or SUS 302.
The mandrel 4 may be made of a superelastic alloy material, which is relatively flexible and resilient, and is less likely to permanently bend, so that the guide wire made of a superelastic alloy has a sufficient bendability and an extremely high elastic recovery capability at the distal end portion, and can improve the insertion performance of the guide wire into a complicated and bent blood vessel, and can achieve more excellent operability.
Referring to fig. 3-4, the guide wire main body 2 is a section of metal main body 201 or polymer main body 202 wound on the mandrel main body 401 and serving as zebra stripes, and the guide wire main body 2 is fixedly connected with the mandrel main body 401 by means of bonding or welding.
Preferably, the metal body 201 is a spring structure made of metal, and may be a flat wire spring or a round wire spring. The spring structure is mainly made of stainless steel material, and one of SUS304, SUS303, SUS316L, SUS316J1, SUS316J1L, SUS405, SUS430, SUS434, SUS444, SUS429, SUS430F or SUS302 may be used.
Further, the surface of the spring structure of the metal main body 201 is coated with a hydrophobic coating, and the hydrophobic coating is made of one or more of silicone, polytetrafluoroethylene or fluorinated ethylene propylene copolymer.
Preferably, the polymer main body 202 has an alternating spiral structure made of a polymer material, and the polymer material may be one or more selected from polyolefins such as ethylene and polypropylene, polyvinyl chloride, polyesters (PET, PBT, etc.), polyamides, polyimides, polyurethanes, polystyrene, polycarbonates, silicone resins, fluoropolymers (PTFE, ETFE, PFA, etc.), or composites of these materials, latex rubber, silicone rubber, or nylon elastomers.
Further, the surface of the alternating helical structure of the polymer main body 202 has alternating colors for observing the movement or rotation of the guide wire, and the colors of the alternating helical structure can be one or more of blue white, yellow black, yellow white, yellow green, blue black, black and white, and the like.
Referring to fig. 1, 3 and 4, the guide wire head end 3 is a flexible structure coated on the surface of the mandrel head end 402, the guide wire head end 3 is made of a high polymer material, and mainly includes a TPU material, wherein one of barium sulfate, tungsten, bismuth oxide or the like may be added in a certain proportion, the diameter of the inner side end of the guide wire head end 3 is consistent with the overall diameter of the guide wire main body 2, the diameter of the outer side end of the guide wire head end 3 is smaller than the diameter of the guide wire main body 2, the outer side end of the guide wire head end 3 is an arc-shaped end, and the guide wire head end 3 is fixedly connected with the mandrel head end 402 in a bonding or welding manner. The surface of the guide wire head end 3 is coated with a functional coating, and the functional coating is one or more of a hydrophilic coating, a hydrophobic coating or a bioactive coating.
The hydrophilic coating is made of one or more of polyvinyl alcohol, polyvinylpyrrolidone, polyethylene glycol, polyacrylamide, polyacrylic acid, sodium polyacrylate, poly (2-hydroxyethyl methacrylate), maleic anhydride copolymer, ethylene-vinyl alcohol copolymer, 2-methacryloyloxyethyl phosphorylcholine or copolymer thereof, (2-hydroxyethyl methacrylate) -styrene block copolymer, synthetic polypeptide, collagen, hyaluronate and cellulose copolymer, and can attract water molecules to form a 'gel' surface on the surface of the guide wire head end 3 so as to reduce the passing resistance of the guide wire.
The hydrophobic coating is made of one or more of silicone, polytetrafluoroethylene or fluorinated ethylene propylene copolymer, and can inhibit water molecules from forming a wax-shaped surface on the surface of the guide wire head end 3, so that friction is reduced, and the tracking performance of the guide wire is improved.
The bioactive coating can adopt a functional coating with anticoagulation, anti-infection and the like, so that the surface of the guide wire head end 3 has anticoagulation, anti-infection and the like.
The guide wire tail end 1 is of a flexible structure coated on the surface of the mandrel tail end 403, the guide wire tail end 1 is made of a high polymer material and mainly comprises a TPU material or a PTFE material, the overall diameter of the guide wire tail end 1 is consistent with that of the guide wire main body 2, and the guide wire tail end 1 is fixedly connected with the tail end of the mandrel tail end 403 in a bonding or welding mode.
The utility model discloses a use method does:
1. removing the guidewire from the coil and wiping the guidewire tip with saline to activate the hydrophilic coating;
2. inserting the ureteroscope into the patient body, and observing the position of lesion;
3. the head end of the guide wire enters the body of the patient along the hard endoscope and is kept in the renal pelvis;
4. withdrawing the hard endoscope, and inserting a flexible ureteroscope sheath along the tail end of the guide wire;
5. withdrawing the sheath core of the soft endoscope sheath, and reserving the sheath tube in the patient body;
6. the flexible ureteroscope is inserted into a patient body along the tail end of the guide wire, the tail end of the conventional guide wire is hard, the maximum outer diameter of the flexible ureteroscope is about 0.97mm, the flexible ureteroscope is thin, the channel size is about 1.2mm, and the clamp channel of an endoscope is very easy to damage, and the tail end of the guide wire of the utility model is made of flexible materials, so that the endoscope is not easy to damage;
7. the guidewire is withdrawn.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A double-ended guidewire, comprising: the guide wire comprises a mandrel (4), a guide wire main body (2), a guide wire head end (3) and a guide wire tail end (1);
the mandrel (4) is a metal mandrel, the mandrel (4) comprises a mandrel main body (401) with a certain length, two ends of the mandrel main body (401) are respectively machined into a mandrel head end (402) and a mandrel tail end (403) with two tapered ends in a grinding mode, the mandrel head end (402) is of a long conical belt flat-straight section structure, and the mandrel tail end (403) is of a conical structure;
the guide wire main body (2) is a section of metal main body (201) or polymer main body (202) wound on the mandrel main body (401) and used as zebra stripes, and the guide wire main body (2) is fixedly connected with the mandrel main body (401) in a bonding or welding mode; the metal main body (201) is a spring structure made of metal, and the surface of the spring structure is coated with a hydrophobic coating; the polymer main body (202) is an alternate spiral structure made of a polymer material, and the surface of the alternate spiral structure is provided with alternate colors which are convenient for observing the movement or rotation of the guide wire;
the guide wire head end (3) is of a flexible structure coated on the surface of the mandrel head end (402), the guide wire head end (3) is made of a high polymer material, the diameter of the inner side end of the guide wire head end (3) is consistent with the overall diameter of the guide wire main body (2), the diameter of the outer side end of the guide wire head end (3) is smaller than the diameter of the guide wire main body (2), the outer side end of the guide wire head end (3) is an arc-surface end, the guide wire head end (3) is fixedly connected with the mandrel head end (402) in a bonding or welding mode, a functional coating is coated on the surface of the guide wire head end (3), and the functional coating is a hydrophilic coating, a hydrophobic coating or a bioactive coating;
seal wire tail end (1) is the cladding at the flexible construction on dabber tail end (403) surface, seal wire tail end (1) is made by high molecular polymer material, the whole diameter of seal wire tail end (1) with the whole diameter of seal wire main part (2) is unanimous, seal wire tail end (1) through bonding or welded mode with dabber tail end (403) fixed connection.
2. The double-ended guidewire of claim 1, wherein: the mandrel (4) is made of stainless steel materials, pseudo-elastic alloy materials or super-elastic alloy materials.
3. The double-ended guidewire of claim 1, wherein: the metal main body (201) is made of stainless steel materials, and the metal main body (201) is a flat wire spring or a round wire spring wound by stainless steel.
4. The double-ended guidewire of claim 2 or 3, wherein: the stainless steel material is one of SUS304, SUS303, SUS316L, SUS316J1, SUS316J1L, SUS405, SUS430, SUS434, SUS444, SUS429, SUS430F or SUS 302.
5. The double-ended guidewire of claim 1, wherein: the tail end (1) of the guide wire is made of TPU material or PTFE material.
6. The double-ended guidewire of claim 1, wherein: the bioactive coating adopts a functional coating with anticoagulation and anti-infection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020816557.3U CN213432488U (en) | 2020-05-17 | 2020-05-17 | Double-end seal wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020816557.3U CN213432488U (en) | 2020-05-17 | 2020-05-17 | Double-end seal wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213432488U true CN213432488U (en) | 2021-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020816557.3U Active CN213432488U (en) | 2020-05-17 | 2020-05-17 | Double-end seal wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213432488U (en) |
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2020
- 2020-05-17 CN CN202020816557.3U patent/CN213432488U/en active Active
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