CN113491816B - Electric positioning controllable bending guide wire - Google Patents
Electric positioning controllable bending guide wire Download PDFInfo
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- CN113491816B CN113491816B CN202110765876.5A CN202110765876A CN113491816B CN 113491816 B CN113491816 B CN 113491816B CN 202110765876 A CN202110765876 A CN 202110765876A CN 113491816 B CN113491816 B CN 113491816B
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- main body
- distal
- body tube
- elastic sheet
- diameter
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- 238000005452 bending Methods 0.000 title claims abstract description 26
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 229910000531 Co alloy Inorganic materials 0.000 claims description 4
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 229920002614 Polyether block amide Polymers 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 238000012800 visualization Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 4
- 239000003292 glue Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 229910000566 Platinum-iridium alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000006793 arrhythmia Effects 0.000 description 1
- 206010003119 arrhythmia Diseases 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000013152 interventional procedure Methods 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical class [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
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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
- A61M2025/09166—Guide wires having radio-opaque features
Abstract
The invention discloses an electric positioning controllable bending guide wire, which comprises a main body tube; a distal sleeve connected to the distal end of the main body tube, on which a developing electrode is provided; a lead wire passing through the distal cannula and the lumen of the main body tube to connect with the developing electrode; the elastic sheet is positioned in the inner cavity of the distal sleeve, and one end of the elastic sheet is connected with the distal diameter-reducing section of the main body tube; the proximal end of the stay wire is connected with the handle, the stay wire is positioned in the inner cavity of the main body tube and the distal sleeve, and the distal end of the stay wire is connected with the distal end of the elastic sheet. The electric positioning controllable bending guide wire drives the bending of the far end of the elastic sheet to change through the moving stay wire of the handle, thereby realizing the control of the bending of the head end of the guide wire and having the advantages of simple structure and low production cost.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to an electric positioning controllable bending guide wire.
Background
Coronary or arrhythmia interventional procedures generally require the use of X-rays to show the position of the catheter or other instruments in the body, however, prolonged exposure of X-rays as an ionizing radiation has adverse effects on both the patient and the medical staff, which is manifested by increased incidence of tumors, blood system diseases, ocular fundus, reproductive system, skeletal muscle system diseases, and the inability to be exposed to X-rays for special people such as pregnant women and the like.
Along with the continuous maturity of three-dimensional development technology, three-dimensional systems for realizing development according to an electric positioning principle exist at present, and an electric field positioning is to construct a three-dimensional electric field in a human body, and the three-dimensional electric field is positioned in real time by utilizing different impedance information of an electrode catheter at different positions in the human body.
However, at present, most bending guide wires have uncontrollable bending angles, and few bending guide wires with controllable bending angles have complex structures and high production cost.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of complex structure and high production cost of the controllable bending guide wire in the prior art, and an electric positioning and developing function is added, so that the electric positioning controllable bending guide wire is provided.
In order to solve the technical problems, the technical scheme of the invention is as follows:
an electrically positioned steerable bend guidewire, comprising:
a main body tube;
a distal sleeve connected to the distal end of the main body tube, on which a developing electrode is provided;
a lead wire passing through the distal cannula and the lumen of the main body tube to connect with the developing electrode;
the elastic sheet is positioned in the inner cavity of the distal sleeve, and one end of the elastic sheet is connected with the reduced diameter section of the main body pipe and is close to the proximal end of the distal sleeve;
and the proximal end of the stay wire is connected with the outer sleeve of the handle, the distal end of the stay wire penetrates through the main body tube and the inner cavity of the distal sleeve, and the distal end of the stay wire is connected with the distal end of the elastic sheet.
Further, the distal end of the main body tube connected with the distal sleeve is provided with a diameter-reduced section with a reduced outer diameter, and the elastic sheet is connected to the outer wall of the diameter-reduced section.
Further, the main body tube also has a tapered section adjacent to the reduced diameter section, the tapered section tapering in outside diameter from the proximal end to the distal end of the main body tube, the tapered section of the proximal port of the distal sleeve transitioning smoothly.
Further, the elastic piece comprises a thick end and a thin end, the thick end of the elastic piece is fixed on the diameter-reducing section, the elastic piece is arranged in the side wall of the inner cavity of the distal sleeve, and the stay wire is connected with the thin end of the elastic piece.
Further, the width and the thickness of the elastic sheet are in uniform transition in the direction from the thick end to the thin end of the elastic sheet.
Further, the thin end of the elastic sheet faces to one side of the pull wire and is provided with a plane.
Further, in order to better match with the main body pipe reducing section, the near end of the connecting elastic sheet can be subjected to curved surface treatment, so that the curved surface of the reducing section can be better attached.
Further, the elastic sheet and the stay wire are made of any one of medical stainless steel, cobalt alloy, titanium and titanium alloy.
Further, at least two spaced developing electrodes are placed on the outer wall of the distal sleeve; the distance between two adjacent developing electrodes is 0.5-20mm.
Further, a tail wire is connected to the proximal end of the lead wire, and a contact pin connected with the three-dimensional developing device is arranged on the tail wire.
The technical scheme of the invention has the following advantages:
1. according to the electric positioning controllable bending guide wire, the elastic sheet is arranged between the distal end of the main body tube and the distal end sleeve, the two ends of the pull wire are respectively connected with the distal end of the elastic sheet and the outer sleeve of the handle, and the pull wire is driven to move by the movement of the outer sleeve of the handle, so that the change of the bending of the end of the guide wire is controlled, and the electric positioning controllable bending guide wire has the advantages of being simple in structure and low in production cost.
2. According to the electric positioning controllable bending guide wire provided by the invention, the thin end of the elastic piece is provided with the plane towards one side of the pull wire, and the pull wire is fixed on the plane of the elastic piece, so that the contact area between the pull wire and the elastic piece is increased, and the combination between the pull wire and the elastic piece is tighter.
3. The electric positioning controllable bending guide wire provided by the invention has the advantages that the thick end of the elastic sheet is flush with the diameter reduction section of the main body pipe, the contact area between the elastic sheet and the diameter reduction section is increased, and the combination between the elastic sheet and the diameter reduction section is tighter.
4. According to the electric positioning controllable bending guide wire provided by the invention, the distal sleeve is provided with at least two developing electrodes, and the at least two developing electrodes are used as developing targets of an electric positioning system for real-time positioning, so that the positioning accuracy can be improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an electrically positioned adjustable bend guidewire according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing the connection relationship among the main tube, the spring and the pull wire according to the embodiment of the present invention;
FIG. 3 is a schematic illustration of the connection between a main body tube and a distal cannula in accordance with an embodiment of the present invention;
FIG. 4 is a schematic view of the position of a developing electrode on a distal sleeve in an embodiment of the present invention;
fig. 5 is a schematic view of the handle portion of an adjustable bend guidewire in accordance with an embodiment of the present invention.
Reference numerals illustrate: 1. a handle; 101. a push rod; 102. pushing and twisting; 2. a main body tube; 201. a reducing section; 202. a conical section; 3. a distal cannula; 4. developing electrodes; 5. a tail wire; 6. a contact pin; 7. a pull wire; 8. a spring plate; 801. a thick end; 802. and a thin end.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention, and "distal" refers to a direction away from the handle and "proximal" refers to a direction closer to the handle. In the description of the present invention, it should be noted that, 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 invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
As shown in fig. 1-5, the present embodiment provides an electrically positioned controllable bent guide wire, comprising a handle 1, a main body tube 2, a distal sleeve 3, a lead wire, a spring plate 8, a pull wire 7 and a developing electrode 4. Wherein the main body pipe 2 is of a pipe body structure with a cavity inside; the distal sleeve 3 is sleeved at the distal end of the main body tube 2, and the developing electrode 4 is arranged at the periphery of the distal sleeve 3; the lead passes through the distal sleeve 3 and the inner cavity of the main body tube 2 to be connected with the developing electrode 4; one end of the elastic sheet 8 is connected with one end of the main body tube 2 close to the distal sleeve 3; the proximal end of the stay wire 7 is connected with the handle 1, the distal end passes through the inner cavities of the main body tube 2 and the distal sleeve 3, and the distal end of the stay wire 7 is connected with one end of the elastic sheet 8 far away from the main body tube 2.
The electric positioning controllable bending guide wire is characterized in that an elastic sheet 8 is arranged between the far end of the main body tube 2 and the far-end sleeve 3, two ends of a stay wire 7 are respectively connected with the far end 3 of the elastic sheet 8 and the handle 1, and the stay wire 7 is driven to move by the movement of the handle 1, so that the change of the bending of the end of the guide wire is controlled, and the electric positioning controllable bending guide wire has the advantages of simple structure and low production cost.
In this embodiment, the main body tube 2 may be a medical stainless steel tube, a pebax braided tube, or the like. The distal end of the main body tube 2 connected with the distal sleeve 3 is provided with a diameter-reduced section 201 with reduced outer diameter, the proximal end of the distal sleeve 3 is sleeved on the diameter-reduced section 201, and the elastic sheet 8 is connected on the outer wall of the diameter-reduced section 201. The connection mode of the elastic sheet 8 and the outer wall of the diameter-reduced section 201 can be laser welding, tin connection, glue connection and other modes. The main body tube 2 also has a tapered section 202 adjacent to the reduced diameter section 201, the tapered section 202 tapering in outside diameter from the proximal end to the distal end of the main body tube 2, the tapered section 202 smoothing the transition of the proximal end of the distal sleeve 3 to the main body tube 2 by a heat shrink tube hot blow process. When the elastic sheet 8 is pulled by the stay wire 7 to bend by the way that the elastic sheet 8 is arranged on the outer wall of the diameter-reduced section 201 of the main body tube 2 and in the inner cavity of the distal sleeve 3, the distal sleeve 3 can bend synchronously with the elastic sheet 8.
Specifically, the outer diameter of the main body tube 2 is 0.6mm-1.0mm, the inner diameter is 0.3mm-0.5mm, and the effective length is 1.0m, 1.5m, 1.8m and 2.6m, and the tolerance is +/-20 cm. The diameter-reducing section 201 on the main pipe 2 is formed by polishing the far end of the main pipe 2 radially by 1-8mm in length, and polishing until the pipe wall thickness of the diameter-reducing section 201 is 0.05-0.2mm. The conical section 202 on the main body pipe 2 is formed by radially conical grinding of 1-5mm on the part of the main body pipe 2 close to the diameter reduction section 201.
In this embodiment, the elastic piece 8 includes a thick end 801 and a thin end 802, the thick end 801 of the elastic piece 8 is connected to the reduced diameter section 201, the thin end 802 of the elastic piece 8 extends into the inner cavity of the distal sleeve 3, and the pull wire 7 is connected to the thin end 802 of the elastic piece 8. The width and thickness of the spring plate 8 transition uniformly in the direction from the thick end 801 to the thin end 802 of the spring plate 8. The thick end 801 of the spring plate 8 is connected to the reduced diameter section 201 of the main pipe 2, so that the contact area between the spring plate 8 and the main pipe 2 is increased, the combination between the spring plate 8 and the reduced diameter section 201 is tighter, and the spring plate 8 is not easy to fall off.
Specifically, the elastic sheet 8 is made of medical stainless steel, cobalt alloy, titanium alloy and other materials, the thickness of the section of the thick end 801 of the elastic sheet 8 is 0.1-0.5mm, the width is 0.1-0.5mm, the thickness of the section of the thin end 802 is 0.05-0.2mm, the width is 0.05-0.2mm, and the whole length of the elastic sheet 8 is 1-20cm. The connection mode between the thick end 801 of the spring plate 8 and the outer wall of the reduced diameter section 201 can be laser welding, tin connection, glue connection and other modes.
In this embodiment, the thin end 802 of the elastic sheet 8 has a plane facing the pull wire 7, the plane on the elastic sheet 8 is polished, the pull wire 7 is fixed on the plane of the elastic sheet 8, the contact area between the pull wire 7 and the elastic sheet 8 is increased, and the combination between the pull wire 7 and the elastic sheet 8 is tighter.
In this embodiment, the distal cannula 3 has a length of 1-20cm, an outer diameter of 0.6mm-1.2mm and an inner diameter of 0.3mm-0.5mm; the distal sleeve 3 is made of a polymer material such as TPU or pebax. A small amount of glue is applied to the tapered section 202 of the main body tube 2 to ensure the connection strength of the distal sleeve 3, and the distal sleeve 3 may be flush with the outer wall of the main body tube 2 by means of a heat shrink tube hot blowing process. The distal sleeve 3 seals the port of the distal sleeve 3 at the end far away from the main body tube 2 by adopting the processes of melting the head end or glue sealing and the like.
In the embodiment, the stay wire 7 is made of medical stainless steel, cobalt alloy, titanium alloy and other materials, and the outer diameter of the stay wire 7 is 0.05-0.2mm. The handle 1 drives the elastic sheet 8 and the distal sleeve 3 to bend by pulling the pull wire 7.
In this embodiment, the developing electrode 4 is made of a platinum iridium alloy material and is used as a developing target of the electrical positioning system. Two developing electrodes 4 are arranged at intervals on the outer periphery of the distal sleeve 3, and the interval between two adjacent developing electrodes 4 is 0.5-20mm. The two developing electrodes 4 are used as developing targets of the electric positioning system for real-time positioning, so that the positioning accuracy can be improved.
In this embodiment, the pull wire 7 penetrating from the proximal end of the main body tube 2 is connected to the outer sleeve of the handle 1, and the end of the handle 1 near the main body tube 2 is connected with a push button 102 through a push rod 101. The proximal end of the wire is connected with a tail wire 5, and the tail wire 5 is provided with a contact pin 6 connected with the three-dimensional developing device.
In summary, according to the electrically-positioned controllable bending guide wire provided by the embodiment of the invention, the elastic sheet 8 is arranged between the distal end of the main body tube 2 and the distal end sleeve 3, two ends of the pull wire 7 are respectively connected with the distal end of the elastic sheet 8 and the handle 1, and the pull wire 7 is driven to move by the movement of the handle 1, so that the change of the bending of the end of the guide wire is controlled, and the electrically-positioned controllable bending guide wire has the advantages of simple structure and low production cost.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (8)
1. An electrically positioned steerable bend guidewire, comprising:
a main body tube (2);
a distal sleeve (3) connected to the distal end of the main body tube (2) and provided with a developing electrode (4);
a lead wire passing through the distal sleeve (3) and the inner cavity of the main body tube (2) to be connected with the developing electrode (4);
the elastic sheet (8) is positioned in the inner cavity of the distal sleeve (3), and one end of the elastic sheet is connected with the diameter-reduced section (201) of the main body tube (2);
the proximal end of the stay wire (7) is connected with the outer sleeve of the handle (1), the distal end of the stay wire passes through the inner cavities of the main body tube (2) and the distal end sleeve (3), and the distal end of the stay wire (7) is connected with the distal end of the elastic sheet (8);
the distal end of the main body tube (2) is provided with a diameter-reduced section (201) with a reduced outer diameter, the proximal end of the distal sleeve (3) is sleeved on the diameter-reduced section (201), and the elastic sheet (8) is connected to the outer wall of the diameter-reduced section (201).
2. The electrically positioned steerable guidewire of claim 1, wherein the main body tube (2) further has a tapered section (202) adjacent to the reduced diameter section (201), the tapered section (202) tapering in outside diameter from the proximal end to the distal end of the main body tube (2), the proximal end of the distal cannula (3) transitioning smoothly at the tapered section (202).
3. The electrically positioned steerable guidewire of claim 1, wherein the spring (8) comprises a thick end (801) and a thin end (802), the thick end (801) of the spring (8) is connected to the reduced diameter section (201), the thin end (802) of the spring (8) extends into the lumen of the distal cannula (3), and the pull wire (7) is connected to the thin end (802) of the spring (8).
4. An electrically positioned steerable guidewire according to claim 3, characterized in that the width and thickness of the spring (8) transition uniformly in the direction from the thick end (801) to the thin end (802) of the spring (8).
5. An electrically positioned steerable guidewire according to claim 3, characterized in that the thin end (802) of the spring (8) has a flat surface towards the side of the pull wire (7).
6. The electric positioning controllable bending guide wire according to claim 1, wherein the main body tube (2) is any one of medical stainless steel and Pebax braided tube; the elastic sheet (8) and the stay wire (7) are made of any one of medical stainless steel, cobalt alloy, titanium and titanium alloy.
7. The electrically positioned steerable guidewire according to claim 1, characterized in that the outer circumference of the distal cannula (3) is provided with at least two spaced apart development electrodes (4); the distance between two adjacent developing electrodes (4) is 0.5-20mm.
8. The electrically positioned steerable guidewire of claim 1, wherein the proximal end of the guidewire is connected to a tail (5), the tail (5) being provided with a pin (6) connected to a three-dimensional visualization device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110765876.5A CN113491816B (en) | 2021-07-06 | 2021-07-06 | Electric positioning controllable bending guide wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110765876.5A CN113491816B (en) | 2021-07-06 | 2021-07-06 | Electric positioning controllable bending guide wire |
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| CN113491816A CN113491816A (en) | 2021-10-12 |
| CN113491816B true CN113491816B (en) | 2023-06-27 |
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| CN202110765876.5A Active CN113491816B (en) | 2021-07-06 | 2021-07-06 | Electric positioning controllable bending guide wire |
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| JP2010075530A (en) * | 2008-09-26 | 2010-04-08 | Japan Lifeline Co Ltd | Catheter allowing distal end deflection |
| CN104739375A (en) * | 2010-04-21 | 2015-07-01 | 日本来富恩株式会社 | Catheter |
| CN103124577A (en) * | 2010-09-28 | 2013-05-29 | 日本来富恩株式会社 | Catheter |
| CN103648360A (en) * | 2012-04-06 | 2014-03-19 | 奥林巴斯医疗株式会社 | Insertion device |
| JP2014117399A (en) * | 2012-12-14 | 2014-06-30 | River Seikoo:Kk | Medical kaseta and method of manufacturing medical kaseta |
| CN106730246A (en) * | 2017-01-16 | 2017-05-31 | 杭州唯强医疗科技有限公司 | It is adapted to the adjustable bent catheter of left-handed operation |
| CN112244948A (en) * | 2020-09-10 | 2021-01-22 | 杭州德柯医疗科技有限公司 | Interventional instrument and adsorption head thereof |
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| CN113491816A (en) | 2021-10-12 |
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