CN1222062A - Hybrid tubular guide wire for catheters - Google Patents
Hybrid tubular guide wire for catheters Download PDFInfo
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- CN1222062A CN1222062A CN 97194901 CN97194901A CN1222062A CN 1222062 A CN1222062 A CN 1222062A CN 97194901 CN97194901 CN 97194901 CN 97194901 A CN97194901 A CN 97194901A CN 1222062 A CN1222062 A CN 1222062A
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- lead
- tube portion
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- tubular body
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Abstract
A hybrid tubular wire (320) includes first and second elongate tubular bodies (340, 344), fitted end to end, and about which a catheter may be threaded for guidance to a body target location in a vasculature passageway of a body. The first elongate body (340) has greater rotational stiffness than the second elongate body (344), which has greater lateral flexibility. Cuts (362) are formed either by saw cutting, laser cutting or etching at spaced apart locations along the length of the second elongate body (344) to increase its lateral flexibility. At least some of the cuts extend through the tubular body to the interior cavity to allow the escape of fluids flowing in the cavity.
Description
Background of the present invention
The present invention relates to conduit system, more specifically say to relate to a kind of improved lead apparatus that reverses with the mixing tube of bending property that has.
Catheter guide wire once was used to for many years with conduit " guiding " or " guiding " in the body vessels system on the required target location.Typical lead is long from 135cm to 195cm approximately, and is the helical spring that is made of-stainless a solid wire and a platinum alloy two main members.This solid wire has gradient as a means of increasing its pliability at its far-end.The typical way of helical spring be soldering on the far-end of solid wire and be helical spring internal diameter with point that the external diameter of solid wire cooperates on.So selecting platinum for use is when observing with X ray because lead navigates by water in human body as helical spring, platinum can provide the radiation opaque performance of X ray and platinum and bio-compatible.The tip that helical spring also can be lead provides pliability as a means of reducing the probability that tissue is pierced.
Observing lead by the navigation of tissue with radioscopy finishes in the intravital situation of people.Lead is inserted in the conduit lead is stretched out from pipe end, be inserted into lead and conduit in vascular or the pipeline then and move through within it, until guidewire tip arrives till the required vascular or pipe branch, rotate or reverse lead proximal end then and its tip that is bent is pointed in the required branch move on again.Conduit is to follow in the outside of lead or follow the trail of lead and advance to desired location and provide other supporting for lead at that time.In case conduit puts in place, at this moment according to the treatment that will carry out, lead can be extracted out in it.As the occasion in balloon-like blood vessel shaping (balloonangioplasty), lead is left on original position and can be used to change conduit in this process but often.
Along with lead enters in the tissue, typically the internal drag from the contact of the surface of many circles can reduce the ability that lead moves on, and this more difficult and Fabian process that can lead is perhaps more serious, can not become the process of a failure near required tissue.Certainly, a lead that has pliability and good twisting performance (torsional rigidity) concurrently will help to overcome the problem that causes owing to internal drag.
General introduction of the present invention
An object of the present invention is to provide a kind of improved catheter guide wire apparatus.
Another object of the present invention provides a kind of like this apparatus, has torsional rigidity, crooked pliability and longitudinal strength concurrently.
A further object of the invention provides a kind of like this apparatus, and its design and structure are all very simple.
Above-mentioned these and other some purposes of the present invention all can realize among the concrete embodiment that demonstrates of catheter guide wire.This catheter guide wire by first thin-walled made from first kind of material, elongated, hollow tubular body and conllinear be attached at thin-walled on first tubular body, that make with second kind of material, elongated, hollow tubular body constitutes.First kind of material has bigger torsional rigidity and less side direction flexibility than second kind of material, but tubular structure provides sizable torsional rigidity still can for second tubular body.In this embodiment, lead is hollow, and itself also can be used as conduit.
Brief description of drawings
After reading the detailed description of doing below in conjunction with accompanying drawing, understand when having clearly above-mentioned these and other some purposes, characteristic and advantage, in the accompanying drawings:
Fig. 1 is lateral, the partial phantom according to the lead of mixing tube of the present invention;
Fig. 2 is lateral, the partial phantom according to another embodiment of the lead of mixing tube of the present invention;
Fig. 3 is lateral, partial, the phantom that also have an embodiment according to the lead of mixing tube of the present invention.
Describe in detail
Fig. 1 is lateral, partial, the phantom of the lead 320 of the mixing tube made according to the present invention.Having a pin pliers formula to reverse chuck 324 is attached on the near-end 328 in common mode.Chuck 324 also has an opening, hole or road E Shi adapter 332 and medicinal liquid or other inorganic agents can be incorporated in the piped lead 320.(chuck 324 can also can leave with road E Shi adapter further to the far-end location.)
The lead 320 of mixing tube is made of two parts 340 and 344, and wherein part 344 has less external diameter than part 340 and is inserted into and sticks with glue agent or other retention mechanisms are attached in the far-end of part 340.Also can there be a slick tubular sleeve 346 to be contained in the outside of part 344, forms an essentially smooth joint so that dock with the far-end of part 340.Perhaps can be arbitrarily with the be laid in outside of part 340 and 344 of a slick coating or thin film.
In the cavity of cellular conductor 320, can insert the bobbin 333 of a band gradient, this bobbin can be by radiopaque material of X line perspective is made, if perhaps adopt nuclear magnetic resonance (MRI), bobbin 333 can be made as gadolinium, gadolinium compound, gadolinium capsule, dysprosium, dysprosium thing or dysprosium capsule by MRI is detected the material that works.Mode can will be incorporated into the inside of cellular conductor 320 to radiopaque solution as an alternative, perhaps if MRI rather than X line are had an X-rayed adopted words, can use the visible solution to MRI so.Certainly, lead 320 can be to radiopaque or detectable to MRI, and a suitable solution can be introduced in the lead, so that improve visibility.Certainly, the purpose of single line axle or solution is that its position and/or motion can be tracked when making lead 320 in being screwed into vascular system or body cavity like this.
Bobbin 333 also can be used to change the curvature of cellular conductor 320 according to the needs of user.For example, it is arcual or angled that the part of cellular conductor 320 can be made into, and a straight bobbin 333 can be inserted into then to make its become straight in the lead, and this root bobbin can be withdrawn and made lead recovery arc when needs.As an alternative, cellular conductor 320 can be made into the linear bending, and the arc that bobbin 333 is made into to select, when making in bobbin is inserted into cellular conductor, bobbin can make lead have identical arc, and be drawn out of or lead when advancing to the arch section that exceeds bobbin when bobbin, the front end of lead is variable again straight.Like this, according to the original shape of bobbin 333 and/or cellular conductor 320, in the time of in lead is set at vascular system or body cavity, the shape of lead can be controlled to a certain extent.
Gradient or diameter that bobbin 333 can also be used to change the pliability-change bobbin 333 of lead 320 can provide different rigidity to lead.
Best, the part of cellular conductor 320 340 is made by rustless steel, and part 344 is made by Nitinol.The part 340 of cellular conductor 320 also can be made by polymer or other flexible material with suitable intensity.Sleeve 346 can be made by slick polymer such as polyethylene or the urine gastral cavity of filming.
Best, the overall diameter of part 340 can be 0.018 inch (or 0.036 inch), and interior diameter can be 0.012 inch (or 0.030 inch), and the overall diameter of part 344 preferably is about 0.014 inch (or 0.032 inch).The hollow space of the far-end of part 340 is enabled to admit closely the also near-end of retained part 344 by boring.Glue or other binding agents also can be used to keep intussusception fixedly connected of this conllinear.Best, the length of part 344 can be about 35cm, and the length of part 340 is supplied the remainder of lead full-length.When sleeve 346 preferably is chosen to be such thickness and makes on being contained in part 344, in conjunction with after diameter the diameter with part 340 is identical basically, thereby present one section smooth and not disruptive conductor length.
Otch, groove, gap or opening can anisotropically be made of as a means of the lateral thrust that part 344 is provided in its length of part 344 upper edges of cellular conductor 320, the method of making or (for example adopt United States Patent (USP) 5 with sawing (quasiconductor that for example is embedded with bortz is cut apart blade), discharge processing, cut or etching, illustrated engraving method in 106, No. 455).Otch is generally perpendicular to or across the length dimension of lead and be arranged alternately around lead., otch obtains long otch but also can being oblique.The two just can easily select the curved shape of cellular conductor the spacing of control and variation otch and the degree of depth, and the spacing of otch is more little, the degree of depth is defecated more can obtain a more flexible lead, and vice versa.
The far-end 348 of lead is preferably made circle and is pierced through systemic chance so that reduce injury as much as possible.On far-end 340, also can make labelling or band 349 radiopaque or that can be detected by MRI.Band 349 can be (being applicable to MRI) of (be applicable to X line perspective) gold or platinum alloy or gadolinium, dysprosium and chemical compound thereof, and can be on far-end 340 with deposition, reel or utilize marmem (NiTi) effect with band " pinning " in the termination on every side etc. method make.Mode also can be located at a radiopaque stopper (or MRI labelling) in the flow passage chamber of far-end 340 as an alternative.
Fig. 2 is the lateral partial view of another embodiment of the lead 350 of mixing tube made in accordance with the present invention.Lead 350 is the same with lead among Fig. 1, is made of two parts 354 and 358.Part 354 is preferably made by rustless steel, its size make it can be in the cavity of far-end 354a the near-end 358a of receiving portion 358.Best, part 358 is made as a means of obtaining the lateral thrust bigger than part 354 by Nitinol.Be shaped on gradient on the outer surface of the far-end 354a of part 354 so as between part 354 and part 358, to present one gradually the joint of attenuation in order to avoid damage the conduit wall of the vascular system that it will insert.Part 358 can and/or utilize shape memory effect to remain on the position in the cavity of part 354 with interference fit, suitable adhesive.
Making on the otch on the part 358 362 is the spaced positions of top, the end, both sides in this part shown in the figure is used for increasing the bending property of this part on side direction, keeps the torsional rigidity of an appropriate level simultaneously.Having one can be by to radiopaque material or the stopper 364 that the material that the material of MRI sensitivity or two kinds of character have concurrently is made is set at the far-end of part 358, so that be used for improving the visibility of lead, and be made into circular to injure impaired probability outward as a means of what reduce the vascular system passage.To radiation opaque or to responsive pursuit movement and/or the lead 350 of observation in vascular system of also can be used to certainly of MRI.
Bobbin 368 in the cavity that is located at lead 350 shown in the figure has a bending 372, will make lead have identical curved shape in the time of like this in this bobbin is inserted into lead 350, and lead can become straight again when bobbin is withdrawn.Crooked 372 general sides quite far away on bobbin.There is a stop part 376 to be attached to be used on the near-end of bobbin 368 and prevents that bobbin is inserted into above certain any degree in lead.Stop part also can only be arranged on one section looped pipeline on the bobbin near-end.
Fig. 3 is another embodiment of the lead 380 of mixing tube made in accordance with the present invention.Lead 380 is made of two parts 384 and 388 as other leads, and the near-end of part 388 is fitted in the far-end of part 384.Having a sleeve 392 to be fitted on the part of part 388 just still makes the far-end of part 388 from wherein stretching out.On the far-end of part 388, be shaped on otch 394 so that make the solution of the near-end that is incorporated into part 384 be able to discharge (simultaneously also for bending property etc.), as what embodiment discussed among top Fig. 2 from side direction.In this example, the termination of part 388 is flexible leads that can be used as desired form.Part 384 can be made by rustless steel, and part 388 can be made by Nitinol, and sleeve 392 should be made by lubricious material.
Adopt the lead of mixing tube of the present invention, quite high torsional rigidity can obtain on stainless steel parts, then owing to also comprise the distal portion of Nitinol, and can obtain very big lateral thrust, and this lead can be screwed in the passage of vascular system.Because Nitinol partly is tubular structure and process microfabrication, also can obtain suitable rotational stiffness.So just, may on guide's section of lead or far-end, obtain rotational stiffness and lateral thrust performance simultaneously.
Here the lead of the mixing tube of Jie Luing can use with the conduit that is tightened on lead outside with screw thread in a conventional manner, perhaps can be used to mode like the catheter medicinal liquid is issued on the target location.Owing to be shaped on otch at least a portion length of cellular conductor, medicinal liquid is allowed to from the hole internal leakage on the lead in the passage of vascular system.Certainly, the medicinal liquid position of discharging in the cellular conductor can be controlled by the degree of depth of otch and the control of its position.In addition, the sleeve of a polymer can be inserted in the runner of cellular conductor or the hole and/or be arranged on its outside, so as to be used for sealing and prevent medicinal liquid from outflow of lead runner or discharging.Control this sleeve and just can control the emission point of medicinal liquid from the lead in the length on the lead.Otch also can be so that provide other emission point on sleeve.
In addition, the bobbin of a reinforcing can be inserted in the hole of cellular conductor or the runner as be above-mentioned, and this bobbin can be crooked on selected position.As bobbin among Fig. 2 368 on position 372 crooked like that so that make correspondingly bending of cellular conductor.Perhaps, cellular conductor can be shaped on one or more bendings, is essentially one when needed then to make lead become straight in the cavity that straight bobbin is inserted into lead.And bobbin can adopt according to the method that is used for observing the clinical diagnosis program X line perspective or the visible material of MRI are made.
In the embodiment of above-mentioned these leads, lead can be made into " can by movement-oriented " (flow directable) by the far-end that is provided with highly flexible.So-called: the far-end that " movement-oriented ability " (flow directability) means lead can " flow " around camber line in the vascular system passage and bending with blood.In order to reduce the resistance that lead moves in the vascular system passage, the surperficial available electropolishing of lead, sandblast (with sand, bead, sodium carbonate etc.) or handle as a means of increasing its smoothness with additive method.A smooth plating layer can be coated on the surface of lead in addition ,-this coating for example can comprise silicon-based oil and/or polymer or hydrophilic polymer.Perhaps, smooth sleeve of for example making with hydrophilic polymer also can be used to be arranged on lead around.
Will be appreciated that just some exemplary application of the principle of the invention of above-mentioned these configurations.Concerning those skilled in the art, under the situation of intention that does not deviate from the present invention and claims and scope, just can make many modifications and alternative arrangements to the present invention, the present invention ought to cover this modification and alternative arrangements.
Claims (28)
1. one kind is used for being incorporated in vascular or the pipeline so that when needed catheter is directed into the lead of the mixing tube in precalculated position, this lead is made of the first thin-wall long and thin tube portion and the second thin-wall long and thin tube portion, the tube wall of first tube portion forms a runner, and be to make by material with predetermined torsional rigidity and lateral thrust performance, and second tube portion has than less torsional rigidity of first tube portion and bigger lateral thrust performance, and said second tube portion is attached on first tube portion in the mode of conllinear.
2. according to the lead of claim 1, it is characterized by, the outer surface of second tube portion is provided with a plurality of isolated otch at least a portion length of second tube portion as a means of improving its lateral thrust performance.
3. according to the lead of claim 2, it is characterized by, said otch is made with sawing.
4. according to the lead of claim 2, it is characterized by, said otch is made with cut.
5. according to the lead of claim 2, it is characterized by, said otch is made with etching.
6. according to the lead of claim 2, it is characterized by, said otch is processed into discharge.
7. according to the lead of claim 1, it is characterized by, second tube portion has a near-end and a far-end, and lead also is provided with one to radiopaque element on the far-end of pipe two parts.
8. according to the lead of claim 1, it is characterized by, second tube portion has a near-end and a far-end, and lead also is provided with an element that can be detected by MRI on the far-end of second tube portion.
9. according to the lead of claim 1, it is characterized by, the size of first tube portion and second tube portion is formulated like this, and an end of second tube portion can be inserted in the runner of first tube portion, and second tube portion is fixing within it.
10. according to the lead of claim 9, it is characterized by, the overall diameter of first tube portion is from about 0.010 to 0.038 inch, and the diameter of runner is from about 0.006 to 0.030 inch, at the overall diameter of second tube portion from about 0.008 to 0.032 inch.
11. the lead according to claim 10 is characterized by, the overall diameter of first tube portion is about 0.018 inch, and the diameter of runner is 0.012 inch, and the overall diameter of second tube portion is about 0.014 inch.
12. the lead according to claim 1 is characterized by, first tube portion is made by rustless steel, and second tube portion is made by Nitinol.
13. the lead according to claim 1 also comprises an elongated line, this line can be arranged in the runner of first tube portion and in the cavity of second tube portion and can slide so that reinforce that segment length part that is occupied by this line selectively within it.
14. the lead according to claim 13 is characterized by, said slender threads comprise the stopping device of making within it in case be used for preventing exceeding when this line is in being inserted into runner and cavity certain a bit outside.
15. the lead according to claim 13 is characterized by, said slender threads comprises one or more bendings, when making in it is set at two-part runner and cavity, two parts can be crooked and with slender threads in crooked consistent.
16. lead according to claim 13, it is characterized by, two elongated portions are made by preform has one or more bendings, and slender threads is pre-formed into straight condition basically, when slender threads was set in the runner of two parts and the bending in the cavity, slender threads can make two parts become straight basically like this.
17. the lead according to claim 13 is characterized by, slender threads is by radiopaque material is made.
18. the lead according to claim 13 is characterized by, slender threads is by being made by the material that MRI detects.
19. the lead according to claim 13 is characterized by, slender threads has gradient at least on the one partial-length, so its far-end is thinner than near-end.
20. the lead according to claim 1 also comprises a tubular sleeve, is slidably disposed on the outside of second tube portion, docks with the termination of first tube portion, therefore the overall diameter of first tube portion and tubular sleeve is substantially the same.
21. the lead according to claim 20 is characterized by, tubular sleeve is made by a kind of material of choosing from the cohort that comprises lactoprene, polyurethane, polyethylene and polytetrafluoroethylene.
22. the lead according to claim 20 is characterized by, tubular sleeve and the general adjacency of second tube portion.
23. the lead according to claim 20 is characterized by, the far-end of second tube portion reaches outside the tubular sleeve.
24. the lead according to claim 20 is characterized by, tubular sleeve is covered by one deck lubricious material.
25. compound catheter/catheter lead has first elongate body, its pipe sidewall forms a central flow channel, with second elongate body, its pipe sidewall also forms a central flow channel, said second tubular body has the lateral thrust performance bigger than first tubular body, said second tubular body is linked on first tubular body end-to-end, on the length of the said sidewall of second tubular body, be shaped on groove so that improve the lateral thrust performance of this tubular body, at least some extend through sidewall up to runner in the said groove, make in runner flowing liquid be able to discharge by this route.
26. the catheter/catheter lead according to claim 25 is characterized by, said first tubular body is made by rustless steel, and said second tubular body is made by Nitinol.
27. the catheter/catheter lead according to claim 25 is characterized by, the near-end of said second tubular body is fitted in the runner of far-end of first tubular body.
28. the catheter/catheter lead according to claim 25 also comprises a stopper that is located at the far-end of second tubular body, said stopper is to be made by a kind of material of choosing from comprise the cohort to the radiopaque material and the material that can be detected by MRI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97194901 CN1222062A (en) | 1996-05-24 | 1997-05-21 | Hybrid tubular guide wire for catheters |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/653,289 | 1996-05-24 | ||
| CN 97194901 CN1222062A (en) | 1996-05-24 | 1997-05-21 | Hybrid tubular guide wire for catheters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1222062A true CN1222062A (en) | 1999-07-07 |
Family
ID=5179148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97194901 Pending CN1222062A (en) | 1996-05-24 | 1997-05-21 | Hybrid tubular guide wire for catheters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1222062A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101511285B (en) * | 2006-06-30 | 2012-07-18 | 阿瑟罗迈德公司 | Atherectomy devices and methods |
| CN107412935A (en) * | 2017-07-28 | 2017-12-01 | 长飞光纤光缆股份有限公司 | A kind of tape label insertion type medical catheter and preparation method thereof |
| CN110666461A (en) * | 2019-10-21 | 2020-01-10 | 运怡（北京）医疗器械有限公司 | Processing method of metal guide wire |
-
1997
- 1997-05-21 CN CN 97194901 patent/CN1222062A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101511285B (en) * | 2006-06-30 | 2012-07-18 | 阿瑟罗迈德公司 | Atherectomy devices and methods |
| CN107412935A (en) * | 2017-07-28 | 2017-12-01 | 长飞光纤光缆股份有限公司 | A kind of tape label insertion type medical catheter and preparation method thereof |
| CN107412935B (en) * | 2017-07-28 | 2020-04-10 | 长飞光纤光缆股份有限公司 | Interventional medical catheter with mark and preparation method thereof |
| CN110666461A (en) * | 2019-10-21 | 2020-01-10 | 运怡（北京）医疗器械有限公司 | Processing method of metal guide wire |
| CN110666461B (en) * | 2019-10-21 | 2021-02-19 | 运怡（北京）医疗器械有限公司 | Processing method of metal guide wire |
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