CA2416023C - Guide wire stiffness transition element - Google Patents
Guide wire stiffness transition element Download PDFInfo
- Publication number
- CA2416023C CA2416023C CA002416023A CA2416023A CA2416023C CA 2416023 C CA2416023 C CA 2416023C CA 002416023 A CA002416023 A CA 002416023A CA 2416023 A CA2416023 A CA 2416023A CA 2416023 C CA2416023 C CA 2416023C
- Authority
- CA
- Canada
- Prior art keywords
- guide wire
- tip
- coil
- elongate body
- stiffness
- 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.)
- Expired - Fee Related
Links
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
- A61M2025/09058—Basic structures of guide wires
- A61M2025/09083—Basic structures of guide wires having a coil around a core
-
- 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
-
- 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
- A61M25/0043—Catheters; Hollow probes characterised by structural features
- A61M25/0054—Catheters; Hollow probes characterised by structural features with regions for increasing flexibility
Abstract
A coil over core guide wire having an improved stiffness transition.
Description
Guide Wire Stiffness Transition Element Field of the Invention The present invention generally relates to guide wires. More specifically, the invention relates to a novel approach to making a smoother transitioiz in stiffness along the length of a guide wire which is more stiff at the proximal end and less stiff at the distal end. Those skilled in the art will recognize the benefits of applying the present invention to similar fields not discussed herein.
Background of the Invention Guide wires are used in a variety of medical applications including intravascular, gastrointestinal, and urological. A common vascular application is Percutaneous Transluminal Coronary Angioplasty (PTCA). This procedure can involve inserting a guide wire througlz an incision in the femoral artery near the groin, advancing the guide wire over the aortic arch, into a coronary artery, and across a lesion to be treated in the heart. Similarly, angioplasty perfonned in other parts of the anatomy is called Percutaneous Transluminal Angioplasty (PTA) and may also involve the use of a guide wire. Typical vascular guide wires are 50 cm or 300 cm in length, and are 0.010-0.03 S inches in diameter depending upon the application.
Common gastrointestinal uses of guide wires include endosoopic procedures in which an endoscope may be inserted into the mouth and advanced through the esophagus to the bile duct, the cystic duct, or the pancreatic duct. A guide wire is then threaded through a lumen in the endoscope and into the bile duct, cystic duct, or pancreatic duct. Once the distal tip of the guide wire is located in a position desired to be treated, a catheter having a medical instrument on its distal end is advanced over the guide wire and to the treatment area. The guide wire and the catheter may then be observed through the endoscope as treatment occurs.
Urological uses of guide wires include the placement of ureteral stents.
Ureteral stenting is required when the normal flow of urine from the,kidney into the bladder is compromised perhaps by tumor growth, stricture, or stones. Generally, the procedure involves the insertion of a ureteroscope through the urethra and into the bladder. A guide wire is then advanced through the ureteroscope and into a ureter. The wire is then forced through the compromised portion of the ureter. Once the guide wire is in place, a ureteral stent is advanced over the guide wire and into position in the ureter. The guide wire may then be removed and the stent will maintain the
Background of the Invention Guide wires are used in a variety of medical applications including intravascular, gastrointestinal, and urological. A common vascular application is Percutaneous Transluminal Coronary Angioplasty (PTCA). This procedure can involve inserting a guide wire througlz an incision in the femoral artery near the groin, advancing the guide wire over the aortic arch, into a coronary artery, and across a lesion to be treated in the heart. Similarly, angioplasty perfonned in other parts of the anatomy is called Percutaneous Transluminal Angioplasty (PTA) and may also involve the use of a guide wire. Typical vascular guide wires are 50 cm or 300 cm in length, and are 0.010-0.03 S inches in diameter depending upon the application.
Common gastrointestinal uses of guide wires include endosoopic procedures in which an endoscope may be inserted into the mouth and advanced through the esophagus to the bile duct, the cystic duct, or the pancreatic duct. A guide wire is then threaded through a lumen in the endoscope and into the bile duct, cystic duct, or pancreatic duct. Once the distal tip of the guide wire is located in a position desired to be treated, a catheter having a medical instrument on its distal end is advanced over the guide wire and to the treatment area. The guide wire and the catheter may then be observed through the endoscope as treatment occurs.
Urological uses of guide wires include the placement of ureteral stents.
Ureteral stenting is required when the normal flow of urine from the,kidney into the bladder is compromised perhaps by tumor growth, stricture, or stones. Generally, the procedure involves the insertion of a ureteroscope through the urethra and into the bladder. A guide wire is then advanced through the ureteroscope and into a ureter. The wire is then forced through the compromised portion of the ureter. Once the guide wire is in place, a ureteral stent is advanced over the guide wire and into position in the ureter. The guide wire may then be removed and the stent will maintain the
-2=
patency of the fluid path between the lcidney and the bladder. The procedures described above are but a few of the known uses for guide wires.
Pushability, kink resistance, torqueability and bendability are closely related and important features of a guide wire. It is.important that force applied at the proximal end of a guide wire is coinpletely transferred to the distal end of the guide wire. A
guide wire must exliibit good bendability. This characteristic is a balance between adequate flexibility to navigate atortuous lumen and suitable rigidity to support tracking of anotlier device such as a catheter. Torqueability is closely related to the torsional rigidity of the wire and is ultimately demonstrated by how well rotation imparted to the proximal end of the guide wire is translated to the distal end of the guide wire.
Kink resistance is also an important characteristic of a guide wire. Kink resistance is closely related to the stiffness of the wire. Very stiff wires often provide good pushability (axial rigidity) but poor kink resistance. Kink resistance is measured by the ability of the guide wire to be forced into a relatively tight bend radius'without permanently deforming the wire.
Many guide wires use stiffness by creating a transition from relatively more stiff in the proximal end to relatively less stiff in the distal end. This provides the best combination of pushability and the ability to navigate tortuous vessels. The transition in stiffness may easily be seen by simply bending the wire about an arch. Figure 1 depicts a prior art wire 10 which shows with a flat spot 20 in the arch of the wire. A potential kink point may be created where the transition is not smooth. Furthermore, the unsmooth or flat transition region causes resistance when the wire is advanced through a vessel. The ideal transition is a smooth and continuous transition from stiffer to less stiff. The ideal , transition is depicted in Figure 2 where wire forms a smooth and continuous arch.
Several different types of guide wires are well known in the art. One type of wire is characterized by a solid metal core surrounded by a metal coil. Typical iimetals for the core may include spring steels and stainless steels. The distal tip of the core may also be ground to a taper to provide added flexibility near the tip. Coils may be made of the same variety of metals used as core materials. The coil may be made of round wire or flat wire and may surround the entire length of the core or only a portion of the core. The coil usually is formed by helically wrapping the wire around a mandrel, removing the mandrel, and inserting the core into the coil. The pitch of the wire may be varied along the length of the coil to vary the stiffiness of the coil.
Traditional coil over core wires provide good axial stiffness and hence improved pushability. Traditional coil over core wires also provide dramatically improved lcinlc resistance
patency of the fluid path between the lcidney and the bladder. The procedures described above are but a few of the known uses for guide wires.
Pushability, kink resistance, torqueability and bendability are closely related and important features of a guide wire. It is.important that force applied at the proximal end of a guide wire is coinpletely transferred to the distal end of the guide wire. A
guide wire must exliibit good bendability. This characteristic is a balance between adequate flexibility to navigate atortuous lumen and suitable rigidity to support tracking of anotlier device such as a catheter. Torqueability is closely related to the torsional rigidity of the wire and is ultimately demonstrated by how well rotation imparted to the proximal end of the guide wire is translated to the distal end of the guide wire.
Kink resistance is also an important characteristic of a guide wire. Kink resistance is closely related to the stiffness of the wire. Very stiff wires often provide good pushability (axial rigidity) but poor kink resistance. Kink resistance is measured by the ability of the guide wire to be forced into a relatively tight bend radius'without permanently deforming the wire.
Many guide wires use stiffness by creating a transition from relatively more stiff in the proximal end to relatively less stiff in the distal end. This provides the best combination of pushability and the ability to navigate tortuous vessels. The transition in stiffness may easily be seen by simply bending the wire about an arch. Figure 1 depicts a prior art wire 10 which shows with a flat spot 20 in the arch of the wire. A potential kink point may be created where the transition is not smooth. Furthermore, the unsmooth or flat transition region causes resistance when the wire is advanced through a vessel. The ideal transition is a smooth and continuous transition from stiffer to less stiff. The ideal , transition is depicted in Figure 2 where wire forms a smooth and continuous arch.
Several different types of guide wires are well known in the art. One type of wire is characterized by a solid metal core surrounded by a metal coil. Typical iimetals for the core may include spring steels and stainless steels. The distal tip of the core may also be ground to a taper to provide added flexibility near the tip. Coils may be made of the same variety of metals used as core materials. The coil may be made of round wire or flat wire and may surround the entire length of the core or only a portion of the core. The coil usually is formed by helically wrapping the wire around a mandrel, removing the mandrel, and inserting the core into the coil. The pitch of the wire may be varied along the length of the coil to vary the stiffiness of the coil.
Traditional coil over core wires provide good axial stiffness and hence improved pushability. Traditional coil over core wires also provide dramatically improved lcinlc resistance
- 3 -over stainless steel wires and achieve a smooth transition in stiffness by using a ground core. Some coil over core wires also use a polymer jacket or sleeve to provide improved lubricity and wire movement. However, a flat spot in the stiffness transition may be created where the sleeve stops leaving only the coil over core construction. A coil over core wire having at least a portion covered by a polymer would therefore be improved if it had a smoother transition near the termination of the polymer sleeve.
Sunanary of the Invention According to one aspect of the present invention, there is provided a guide wire comprising: an elongate body having a distal end; a coil comprising successive turns, the coil surrounding at least a distal portion of the elongate body; and a transition element configured to provide a smooth stiffness transition from the distal end of the elongate body to the coil.
According to another aspect of the present invention, there is provided a guide wire comprising: a polymer distal tip, configured to provide an atraumatic distal end to the guide wire; a wire member, embedded in the polymer tip and extending proximal of the polymer tip; a coil surrounding at least a portion of the polymer tip; and a transition element positioned about the wire member such that the transition element provides a smooth stiffness transition from the polymer tip to the coil.
The present invention improves upon the prior art by providing a coil over core guide wire having a smooth stiffness transition.
- 3a -Brief Description of the Drawings Figure 1 depicts a prior art guide wire bent about an arch.
Figure 2 depicts an ideal guide wire bent about an arch.
Figure 3 depicts an embodiment of the invention.
Figure 4 depicts another embodiment of the invention.
Figure 5 depicts another embodiment of the invention.
Detailed Description of the Invention The following detailed description should be read with reference to the drawings in which like elements in different drawings are numbered identically. The drawings, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of the invention.
Examples of constructions, materials, dimensions, and manufacturing processes are provided for selected elements. All other elements employ that which is known to those skilled in the field of the invention. Those skilled in the art will recognize that many of the examples provided have suitable alternatives that may also be used.
Construction of a coil over core guide wire is described in related U.S. Patent No. 6,306,105, filed May 14, 1998.
Figure 3 depicts an embodiment of the invention where core wire may be formed of any biocompatible plastic - 3b -or metal. Core wire 30 may be formed of a variety of metals including stainless steels such as 316, Eligiloy, or MP35N.
Core wire 30 may also be formed of alloys of nickel and titanium such as Nitinol where the nickel titanium alloy is heat treated such that the wire is linearly elastic or superelastic. Core wire 30 may be about 125-300 cm in length and may further have a tapered distal portion 40.
~
Sunanary of the Invention According to one aspect of the present invention, there is provided a guide wire comprising: an elongate body having a distal end; a coil comprising successive turns, the coil surrounding at least a distal portion of the elongate body; and a transition element configured to provide a smooth stiffness transition from the distal end of the elongate body to the coil.
According to another aspect of the present invention, there is provided a guide wire comprising: a polymer distal tip, configured to provide an atraumatic distal end to the guide wire; a wire member, embedded in the polymer tip and extending proximal of the polymer tip; a coil surrounding at least a portion of the polymer tip; and a transition element positioned about the wire member such that the transition element provides a smooth stiffness transition from the polymer tip to the coil.
The present invention improves upon the prior art by providing a coil over core guide wire having a smooth stiffness transition.
- 3a -Brief Description of the Drawings Figure 1 depicts a prior art guide wire bent about an arch.
Figure 2 depicts an ideal guide wire bent about an arch.
Figure 3 depicts an embodiment of the invention.
Figure 4 depicts another embodiment of the invention.
Figure 5 depicts another embodiment of the invention.
Detailed Description of the Invention The following detailed description should be read with reference to the drawings in which like elements in different drawings are numbered identically. The drawings, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of the invention.
Examples of constructions, materials, dimensions, and manufacturing processes are provided for selected elements. All other elements employ that which is known to those skilled in the field of the invention. Those skilled in the art will recognize that many of the examples provided have suitable alternatives that may also be used.
Construction of a coil over core guide wire is described in related U.S. Patent No. 6,306,105, filed May 14, 1998.
Figure 3 depicts an embodiment of the invention where core wire may be formed of any biocompatible plastic - 3b -or metal. Core wire 30 may be formed of a variety of metals including stainless steels such as 316, Eligiloy, or MP35N.
Core wire 30 may also be formed of alloys of nickel and titanium such as Nitinol where the nickel titanium alloy is heat treated such that the wire is linearly elastic or superelastic. Core wire 30 may be about 125-300 cm in length and may further have a tapered distal portion 40.
~
-4-Surrounding core wire 30 may be a coil 50. Coil 50 may be formed of any biocompatible metal or plastic. Coil 50 may be formed of stainless steals or nickel titanium alloys. Coil 50 may be formed of flat ribbon or wire that is ovoid, rectangular or round in cross-section. Coil 50 may have tightly packed turns where each turn touches the preceding turn or may have loosely spaced turns. Coil 50 may further have turns which change in spacing or which change in pitch along the length of coi150.
Coil 50 may have an interior diameter which is greater than the outside diameter of core wire 30 or may have an interior diameter which is approximately equal to the outside diameter of core wire 30. The diameter of coil 50 may vary along the length of the coil.
In a preferred embodiment, the coi150 may have a uniform diameter along its entire length.
Where core wire 30 has a tapered portion 40, the inside diameter of the coil 50 may be greater than the outside diameter of the tapered portion 40 which thereby forms an annular space 60.
Surrounding tapered portion 40 is polymer tip 70. Polymer tip 70 may be formed of any suitable medical grade polymer including Plexar, nylon, polypropylene, polyurethane, polyethylene, silicone and polyether glycol. In a preferred embodiment, polymer tip 70 may be formed from urethane. Tip 70 has a distal portion 73 and a proximal portion 76 where distal portion 73 may generally be of a diameter approximately equal to the outside diameter of coil 50 and proximal portion 76 may generally have a outside diameter less than the inside diameter of coil 50. Second annular space 65 may be formed between the outside of proximal portion 76 and the inside of coil 50.
Annular space 65 may be filled with a transition element 80. Transition element 80 may be formed of any suitable medical grade polymer illcluding silicone. In a preferred embodiment, transition element 80 may be formed of a polymer having a hardness that is less than the hardness of tip 76 where tip 76 may be about 45 D and transition element 80 may be approximately 25 D.
Wire 10 may be assembled by placing transition element 80 about proximal portion 76 and then sliding the assembled tip 70 and transition element 80 over core 30 and into annular space 60. Following this step, the entire assembly may be bonded together using common bonding practices including adhesives. Alternatively, wire 10 may be heated to cause transition element 80 and polymer tip 70 to flow together. Transition element 80 and polymer tip 70 may also flow into coi150 and ultimately become bonded to wire 10.
Alternatively, polymer tip 70 may be formed without proximal portion 76 (not shown).
Wire 10 may then be assembled by placing transiti'on'element 80 into annular space 60. Tip 70 f
Coil 50 may have an interior diameter which is greater than the outside diameter of core wire 30 or may have an interior diameter which is approximately equal to the outside diameter of core wire 30. The diameter of coil 50 may vary along the length of the coil.
In a preferred embodiment, the coi150 may have a uniform diameter along its entire length.
Where core wire 30 has a tapered portion 40, the inside diameter of the coil 50 may be greater than the outside diameter of the tapered portion 40 which thereby forms an annular space 60.
Surrounding tapered portion 40 is polymer tip 70. Polymer tip 70 may be formed of any suitable medical grade polymer including Plexar, nylon, polypropylene, polyurethane, polyethylene, silicone and polyether glycol. In a preferred embodiment, polymer tip 70 may be formed from urethane. Tip 70 has a distal portion 73 and a proximal portion 76 where distal portion 73 may generally be of a diameter approximately equal to the outside diameter of coil 50 and proximal portion 76 may generally have a outside diameter less than the inside diameter of coil 50. Second annular space 65 may be formed between the outside of proximal portion 76 and the inside of coil 50.
Annular space 65 may be filled with a transition element 80. Transition element 80 may be formed of any suitable medical grade polymer illcluding silicone. In a preferred embodiment, transition element 80 may be formed of a polymer having a hardness that is less than the hardness of tip 76 where tip 76 may be about 45 D and transition element 80 may be approximately 25 D.
Wire 10 may be assembled by placing transition element 80 about proximal portion 76 and then sliding the assembled tip 70 and transition element 80 over core 30 and into annular space 60. Following this step, the entire assembly may be bonded together using common bonding practices including adhesives. Alternatively, wire 10 may be heated to cause transition element 80 and polymer tip 70 to flow together. Transition element 80 and polymer tip 70 may also flow into coi150 and ultimately become bonded to wire 10.
Alternatively, polymer tip 70 may be formed without proximal portion 76 (not shown).
Wire 10 may then be assembled by placing transiti'on'element 80 into annular space 60. Tip 70 f
-5-may then be placed about core 30. Wire 10 may then be subject to heating sufficient to cause polymer tip 70 to flow into the annular space formed between the inside diameter of transition element 80 and core 30. Ultimately then, transition element 80 may bond to core 30, coil 50 and tip 70.
Figure 4 depicts an alternative embodiment of the invention where lilce elements are similarly numbered. In this embodiment, transition element 80 may be formed to closely fit about tapered portion 40. The outside diameter of transition element 80 may be sized such that an annular space is formed between transition element 80 and the inside diameter of coil 50.
Polymer tip 70 may then have a proximal section 76 which may fit into the annular space formed between the outside diameter of transition eleinennt 80 and the inside diameter of coi150. The entire assembly may then be bonded as previously described. Alternatively, polymer tip 70 may be formed without proximal section 76 (not shown) and heated such that polymer tip 70 flows into the annular space formed between the outside diameter of transition element 80 and the inside diameter of coil 50.
Figure 5 depicts another embodiment of the invention where lilce elements are similarly numbered. In this einbodiment, transition element 80 may be closely formed to fit about tapered portion 40. Transition element 80 may further have an outside diameter which may approximately be the same as the inside diameter of coil 60. Transition element 80 may be positioned about tapered portion 40 such that the distal end of transition element does n.ot match with the distal end of coil 60 and thereby leaves an annular space distal of transition element 80 which is formed by the space between the outside diameter of tapered section 40 and the inside diameter of coil 60. Polymer tip 70 may then be formed with a proximal portion 76 sized to fit in the annular space formed by the space between the outside diameter of tapered section 40 and the inside diameter of coil 60. The entire tip assembly may then be bonded as previously described.
Polymer tip 70 may be formed without a proximal section 76 (not shown). The tip assembly may then be bonded by heating wire 10 such that polymer tip 70 flows into the annular space formed by the space between the outside diameter of tapered section 40 and the inside diameter of coil 60.
Alternatively, transition element 80 may have its distal end aligned with the distal end of coi150. The tip assembly may then be bonded as described above.
Figure 4 depicts an alternative embodiment of the invention where lilce elements are similarly numbered. In this embodiment, transition element 80 may be formed to closely fit about tapered portion 40. The outside diameter of transition element 80 may be sized such that an annular space is formed between transition element 80 and the inside diameter of coil 50.
Polymer tip 70 may then have a proximal section 76 which may fit into the annular space formed between the outside diameter of transition eleinennt 80 and the inside diameter of coi150. The entire assembly may then be bonded as previously described. Alternatively, polymer tip 70 may be formed without proximal section 76 (not shown) and heated such that polymer tip 70 flows into the annular space formed between the outside diameter of transition element 80 and the inside diameter of coil 50.
Figure 5 depicts another embodiment of the invention where lilce elements are similarly numbered. In this einbodiment, transition element 80 may be closely formed to fit about tapered portion 40. Transition element 80 may further have an outside diameter which may approximately be the same as the inside diameter of coil 60. Transition element 80 may be positioned about tapered portion 40 such that the distal end of transition element does n.ot match with the distal end of coil 60 and thereby leaves an annular space distal of transition element 80 which is formed by the space between the outside diameter of tapered section 40 and the inside diameter of coil 60. Polymer tip 70 may then be formed with a proximal portion 76 sized to fit in the annular space formed by the space between the outside diameter of tapered section 40 and the inside diameter of coil 60. The entire tip assembly may then be bonded as previously described.
Polymer tip 70 may be formed without a proximal section 76 (not shown). The tip assembly may then be bonded by heating wire 10 such that polymer tip 70 flows into the annular space formed by the space between the outside diameter of tapered section 40 and the inside diameter of coil 60.
Alternatively, transition element 80 may have its distal end aligned with the distal end of coi150. The tip assembly may then be bonded as described above.
6 PCT/US01/22341 While the specification describes the preferred designs, materials, methods of manufacture and methods of use, those sleilled in the art will appreciate the scope and spirit of the invention with reference to the appended claims,
Claims (26)
1. A guide wire comprising:
an elongate body having a distal end;
a coil comprising successive turns, the coil surrounding at least a distal portion of the elongate body; and a transition element configured to provide a smooth stiffness transition from the distal end of the elongate body to the coil.
an elongate body having a distal end;
a coil comprising successive turns, the coil surrounding at least a distal portion of the elongate body; and a transition element configured to provide a smooth stiffness transition from the distal end of the elongate body to the coil.
2. The guide wire of claim 1 where in the elongate body comprises:
a first stiffness near the distal end; and a second stiffness proximal to the distal end, the second stiffness being greater than the first stiffness.
a first stiffness near the distal end; and a second stiffness proximal to the distal end, the second stiffness being greater than the first stiffness.
3. The guide wire of claim 1 wherein the coil surrounds all of the elongate body proximal of the distal end of the elongate body.
4. The guide wire of claim 1 further comprising:
a polymer tip, the tip surrounding the distal end of the elongate body.
a polymer tip, the tip surrounding the distal end of the elongate body.
5. The guide wire of claim 4 wherein:
the coil has an inside diameter larger than a diameter of the elongate body with an annular space therebetween; and the transition element at least partially fills the annular space.
the coil has an inside diameter larger than a diameter of the elongate body with an annular space therebetween; and the transition element at least partially fills the annular space.
6. The guide wire of claim 5 wherein a portion of the polymer tip fills a portion of the annular space between the coil and the elongate body.
7. The guide wire of claim 6 wherein the polymer tip surrounds the transition element.
8. The guide wire of claim 6 wherein the transition element surrounds the polymer tip.
9. The guide wire of claim 6 wherein the polymer tip abuts the transition element.
10. A guide wire comprising:
a polymer distal tip, configured to provide an atraumatic distal end to the guide wire;
a wire member, embedded in the polymer tip and extending proximal of the polymer tip;
a coil surrounding at least a portion of the polymer tip; and a transition element positioned about the wire member such that the transition element provides a smooth stiffness transition from the polymer tip to the coil.
a polymer distal tip, configured to provide an atraumatic distal end to the guide wire;
a wire member, embedded in the polymer tip and extending proximal of the polymer tip;
a coil surrounding at least a portion of the polymer tip; and a transition element positioned about the wire member such that the transition element provides a smooth stiffness transition from the polymer tip to the coil.
11. The guide wire of claim 10 wherein the wire member has a proximal section and a distal section, the proximal section stiffer than the distal section.
I2. The guide wire of claim 10 wherein the transition element surrounds a portion of the polymer tip.
13. The guide wire of claim 10 wherein the polymer tip surrounds a portion of the transition element.
14. The guide wire of claim 10 wherein the transition element abuts the polymer tip.
15. A guide wire comprising:
an elongate body, the elongate body having a stiffness;
a tip affixed to a distal end of the elongate body, the tip having a stiffness; and means for transtioning the stiffness of the tip to the stiffness of the elongate body.
an elongate body, the elongate body having a stiffness;
a tip affixed to a distal end of the elongate body, the tip having a stiffness; and means for transtioning the stiffness of the tip to the stiffness of the elongate body.
16. The guide wire of claim 15 wherein the elongate body has a proximal stiffness and a distal stiffness, the proximal stiffness greater than the distal stiffness.
17. The guide wire of claim 15 wherein the tip is formed of a polymer.
18. The guide wire of claim 15 wherein the tip surrounds a distal end of the elongate body.
19. The guide wire of claim 15 further comprising a coil surrounding at least a portion of the elongate body.
20. The guide wire of claim 19 wherein the coil surrounds a portion of the transition means.
21. The guide wire of claim 19 wherein the coil surrounds a portion of the tip.
22. The guide wire of claim 19 wherein the coil surrounds a portion of the tip and a portion of the transition means.
23. The guide wire of claim 15 wherein the transition means surrounds a portion of the elongate body.
24. The guide wire of claim 15 wherein the transition means surrounds a portion of the tip.
25. The guide wire of claim 15 wherein the tip surrounds a portion of the transition means.
26. The guide wire of claim 15 wherein the tip abuts the transition means.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/620,263 US6602207B1 (en) | 2000-07-19 | 2000-07-19 | Guide wire stiffness transition element |
| US09/620,263 | 2000-07-19 | ||
| PCT/US2001/022341 WO2002005886A1 (en) | 2000-07-19 | 2001-07-17 | Guide wire stiffness transition element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2416023A1 CA2416023A1 (en) | 2002-01-24 |
| CA2416023C true CA2416023C (en) | 2008-11-18 |
Family
ID=24485234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002416023A Expired - Fee Related CA2416023C (en) | 2000-07-19 | 2001-07-17 | Guide wire stiffness transition element |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6602207B1 (en) |
| EP (1) | EP1303329B1 (en) |
| JP (1) | JP4824258B2 (en) |
| AT (1) | ATE422930T1 (en) |
| AU (2) | AU7594001A (en) |
| CA (1) | CA2416023C (en) |
| DE (1) | DE60137691D1 (en) |
| WO (1) | WO2002005886A1 (en) |
Families Citing this family (58)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030060731A1 (en) * | 2001-01-26 | 2003-03-27 | Fleischhacker Mark G. | Non-metallic guide wire |
| CA2450251C (en) | 2001-07-05 | 2008-10-21 | Precision Vascular Systems, Inc. | Torqueable soft tip medical device and method of usage |
| JP3762290B2 (en) * | 2001-12-03 | 2006-04-05 | 朝日インテック株式会社 | Medical guidewire |
| US7914467B2 (en) | 2002-07-25 | 2011-03-29 | Boston Scientific Scimed, Inc. | Tubular member having tapered transition for use in a medical device |
| US8377035B2 (en) | 2003-01-17 | 2013-02-19 | Boston Scientific Scimed, Inc. | Unbalanced reinforcement members for medical device |
| US7182735B2 (en) * | 2003-02-26 | 2007-02-27 | Scimed Life Systems, Inc. | Elongated intracorporal medical device |
| US7169118B2 (en) * | 2003-02-26 | 2007-01-30 | Scimed Life Systems, Inc. | Elongate medical device with distal cap |
| JP4677205B2 (en) * | 2003-07-17 | 2011-04-27 | テルモ株式会社 | Guide wire |
| US20050096665A1 (en) * | 2003-10-30 | 2005-05-05 | Scimed Life Systems, Inc. | Guidewire having a helically contoured portion |
| US7553287B2 (en) * | 2003-10-30 | 2009-06-30 | Boston Scientific Scimed, Inc. | Guidewire having an embedded matrix polymer |
| US7824345B2 (en) | 2003-12-22 | 2010-11-02 | Boston Scientific Scimed, Inc. | Medical device with push force limiter |
| US7183998B2 (en) * | 2004-06-02 | 2007-02-27 | Sciperio, Inc. | Micro-helix antenna and methods for making same |
| US7819887B2 (en) | 2004-11-17 | 2010-10-26 | Rex Medical, L.P. | Rotational thrombectomy wire |
| JP2006271955A (en) * | 2005-03-02 | 2006-10-12 | Terumo Corp | Guide wire |
| US7850623B2 (en) | 2005-10-27 | 2010-12-14 | Boston Scientific Scimed, Inc. | Elongate medical device with continuous reinforcement member |
| CA2663319A1 (en) | 2006-09-13 | 2008-03-20 | Boston Scientific Limited | Crossing guidewire |
| US8663221B2 (en) * | 2007-06-08 | 2014-03-04 | Olympus Medical Systems Corp. | Endoscopic treatment tool |
| US8409114B2 (en) | 2007-08-02 | 2013-04-02 | Boston Scientific Scimed, Inc. | Composite elongate medical device including distal tubular member |
| US8105246B2 (en) | 2007-08-03 | 2012-01-31 | Boston Scientific Scimed, Inc. | Elongate medical device having enhanced torque and methods thereof |
| US8821477B2 (en) | 2007-08-06 | 2014-09-02 | Boston Scientific Scimed, Inc. | Alternative micromachined structures |
| US9808595B2 (en) | 2007-08-07 | 2017-11-07 | Boston Scientific Scimed, Inc | Microfabricated catheter with improved bonding structure |
| US7841994B2 (en) | 2007-11-02 | 2010-11-30 | Boston Scientific Scimed, Inc. | Medical device for crossing an occlusion in a vessel |
| FR2923972B1 (en) * | 2007-11-15 | 2010-02-26 | Radiotelephone Sfr | METHOD AND SYSTEM FOR MANAGING COMMUNICATIONS |
| US8376961B2 (en) | 2008-04-07 | 2013-02-19 | Boston Scientific Scimed, Inc. | Micromachined composite guidewire structure with anisotropic bending properties |
| US8002715B2 (en) * | 2008-05-30 | 2011-08-23 | Boston Scientific Scimed, Inc. | Medical device including a polymer sleeve and a coil wound into the polymer sleeve |
| US8535243B2 (en) | 2008-09-10 | 2013-09-17 | Boston Scientific Scimed, Inc. | Medical devices and tapered tubular members for use in medical devices |
| CN105459189B (en) | 2008-12-08 | 2018-05-08 | 血管科学有限公司 | Multiple notch are formed to form the system and method for product along the length of stock |
| US10363389B2 (en) | 2009-04-03 | 2019-07-30 | Scientia Vascular, Llc | Micro-fabricated guidewire devices having varying diameters |
| US11406791B2 (en) | 2009-04-03 | 2022-08-09 | Scientia Vascular, Inc. | Micro-fabricated guidewire devices having varying diameters |
| US8795254B2 (en) | 2008-12-10 | 2014-08-05 | Boston Scientific Scimed, Inc. | Medical devices with a slotted tubular member having improved stress distribution |
| US8444577B2 (en) | 2009-01-05 | 2013-05-21 | Cook Medical Technologies Llc | Medical guide wire |
| GB0902339D0 (en) * | 2009-02-12 | 2009-04-01 | St Georges Healthcare Nhs Trus | Percutaneous guidewire |
| US9950137B2 (en) | 2009-04-03 | 2018-04-24 | Scientia Vascular, Llc | Micro-fabricated guidewire devices formed with hybrid materials |
| JP4913198B2 (en) * | 2009-10-27 | 2012-04-11 | 株式会社パテントストラ | Medical guide wire, method for manufacturing medical guide wire, assembly of medical guide wire, microcatheter and guiding catheter, and assembly of medical guide wire, balloon catheter and guiding catheter |
| US8137293B2 (en) | 2009-11-17 | 2012-03-20 | Boston Scientific Scimed, Inc. | Guidewires including a porous nickel-titanium alloy |
| EP2552530A1 (en) | 2010-03-31 | 2013-02-06 | Boston Scientific Scimed, Inc. | Guidewire with a flexural rigidity profile |
| US9023070B2 (en) | 2010-05-13 | 2015-05-05 | Rex Medical, L.P. | Rotational thrombectomy wire coupler |
| US9795406B2 (en) | 2010-05-13 | 2017-10-24 | Rex Medical, L.P. | Rotational thrombectomy wire |
| US8764779B2 (en) | 2010-05-13 | 2014-07-01 | Rex Medical, L.P. | Rotational thrombectomy wire |
| US8663259B2 (en) | 2010-05-13 | 2014-03-04 | Rex Medical L.P. | Rotational thrombectomy wire |
| WO2012106628A1 (en) | 2011-02-04 | 2012-08-09 | Boston Scientific Scimed, Inc. | Guidewires and methods for making and using the same |
| US9072874B2 (en) | 2011-05-13 | 2015-07-07 | Boston Scientific Scimed, Inc. | Medical devices with a heat transfer region and a heat sink region and methods for manufacturing medical devices |
| US10434292B2 (en) | 2011-06-24 | 2019-10-08 | Access Closure | Method and devices for flow occlusion during device exchanges |
| US20130046376A1 (en) * | 2011-06-24 | 2013-02-21 | Ali Hassan | Method and devices for flow occlusion during device exchanges |
| JP5743267B2 (en) * | 2011-06-30 | 2015-07-01 | 朝日インテック株式会社 | Guide wire |
| US8574170B2 (en) | 2012-04-06 | 2013-11-05 | Covidien Lp | Guidewire |
| US9532785B2 (en) | 2012-05-09 | 2017-01-03 | Access Closure, Inc. | Method and devices for flow occlusion during device exchanges |
| WO2014081942A1 (en) | 2012-11-21 | 2014-05-30 | Concert Medical, Llc | Preformed guidewire |
| US10124437B2 (en) | 2013-08-19 | 2018-11-13 | Covidien Lp | Laser welding of nickel titanium alloys |
| WO2015066237A1 (en) * | 2013-10-29 | 2015-05-07 | Medwerks, Llc | Atraumatic guidewire and method of use |
| WO2016030794A1 (en) * | 2014-08-28 | 2016-03-03 | Koninklijke Philips N.V. | Intravascular devices, systems, and methods having an adhesive filled distal tip element |
| US11207502B2 (en) | 2016-07-18 | 2021-12-28 | Scientia Vascular, Llc | Guidewire devices having shapeable tips and bypass cuts |
| US11052228B2 (en) | 2016-07-18 | 2021-07-06 | Scientia Vascular, Llc | Guidewire devices having shapeable tips and bypass cuts |
| US10821268B2 (en) | 2016-09-14 | 2020-11-03 | Scientia Vascular, Llc | Integrated coil vascular devices |
| US11452541B2 (en) | 2016-12-22 | 2022-09-27 | Scientia Vascular, Inc. | Intravascular device having a selectively deflectable tip |
| ES2869148T3 (en) | 2017-05-26 | 2021-10-25 | Scientia Vascular Llc | Microfabricated medical device with a non-helical cutting arrangement |
| US11305095B2 (en) | 2018-02-22 | 2022-04-19 | Scientia Vascular, Llc | Microfabricated catheter having an intermediate preferred bending section |
| AU2021400736A1 (en) * | 2020-12-17 | 2023-06-29 | Bard Access Systems, Inc. | Floppy distal end section with stiff solid shaft |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4534363A (en) | 1982-04-29 | 1985-08-13 | Cordis Corporation | Coating for angiographic guidewire |
| US4748986A (en) | 1985-11-26 | 1988-06-07 | Advanced Cardiovascular Systems, Inc. | Floppy guide wire with opaque tip |
| US4721117A (en) | 1986-04-25 | 1988-01-26 | Advanced Cardiovascular Systems, Inc. | Torsionally stabilized guide wire with outer jacket |
| US4841976A (en) | 1987-12-17 | 1989-06-27 | Schneider-Shiley (Usa) Inc. | Steerable catheter guide |
| US4984581A (en) | 1988-10-12 | 1991-01-15 | Flexmedics Corporation | Flexible guide having two-way shape memory alloy |
| US5065769A (en) | 1988-11-23 | 1991-11-19 | Boston Scientific Corporation | Small diameter guidewires of multi-filar, cross-wound coils |
| US5147317A (en) | 1990-06-04 | 1992-09-15 | C.R. Bard, Inc. | Low friction varied radiopacity guidewire |
| US5228453A (en) | 1991-05-07 | 1993-07-20 | Target Therapeutics, Inc. | Catheter guide wire |
| US5213111A (en) | 1991-07-10 | 1993-05-25 | Cook Incorporated | Composite wire guide construction |
| US5605162A (en) * | 1991-10-15 | 1997-02-25 | Advanced Cardiovascular Systems, Inc. | Method for using a variable stiffness guidewire |
| US5372144A (en) | 1992-12-01 | 1994-12-13 | Scimed Life Systems, Inc. | Navigability improved guidewire construction and method of using same |
| US5769796A (en) | 1993-05-11 | 1998-06-23 | Target Therapeutics, Inc. | Super-elastic composite guidewire |
| US5498250A (en) | 1994-05-18 | 1996-03-12 | Scimed Life Systems, Inc. | Catheter guide wire with multiple radiopacity |
| US5797856A (en) | 1995-01-05 | 1998-08-25 | Cardiometrics, Inc. | Intravascular guide wire and method |
| US5664580A (en) | 1995-01-31 | 1997-09-09 | Microvena Corporation | Guidewire having bimetallic coil |
| EP0755693A1 (en) | 1995-07-18 | 1997-01-29 | Schneider (Europe) Ag | Catheter guide wire |
| US6027460A (en) | 1995-09-14 | 2000-02-22 | Shturman Cardiology Systems, Inc. | Rotatable intravascular apparatus |
| US6004279A (en) | 1996-01-16 | 1999-12-21 | Boston Scientific Corporation | Medical guidewire |
| US6039699A (en) | 1996-01-22 | 2000-03-21 | Cordis Corporation | Stiff catheter guidewire with flexible distal portion |
| US5924998A (en) | 1997-03-06 | 1999-07-20 | Scimed Life System, Inc. | Guide wire with hydrophilically coated tip |
| US5885227A (en) | 1997-03-25 | 1999-03-23 | Radius Medical Technologies, Inc. | Flexible guidewire with radiopaque plastic tip |
| US6132388A (en) * | 1997-10-16 | 2000-10-17 | Scimed Life Systems, Inc. | Guide wire tip |
| US6308090B1 (en) * | 1998-03-09 | 2001-10-23 | Irvine Biomedical, Inc. | Devices and methods for coronary sinus mapping |
| US6306105B1 (en) | 1998-05-14 | 2001-10-23 | Scimed Life Systems, Inc. | High performance coil wire |
| US6402706B2 (en) * | 1998-12-30 | 2002-06-11 | Advanced Cardiovascular Systems, Inc. | Guide wire with multiple polymer jackets over distal and intermediate core sections |
-
2000
- 2000-07-19 US US09/620,263 patent/US6602207B1/en not_active Expired - Lifetime
-
2001
- 2001-07-17 CA CA002416023A patent/CA2416023C/en not_active Expired - Fee Related
- 2001-07-17 WO PCT/US2001/022341 patent/WO2002005886A1/en active IP Right Grant
- 2001-07-17 DE DE60137691T patent/DE60137691D1/de not_active Expired - Lifetime
- 2001-07-17 AT AT01953498T patent/ATE422930T1/en not_active IP Right Cessation
- 2001-07-17 JP JP2002511816A patent/JP4824258B2/en not_active Expired - Fee Related
- 2001-07-17 AU AU7594001A patent/AU7594001A/en active Pending
- 2001-07-17 AU AU2001275940A patent/AU2001275940B2/en not_active Ceased
- 2001-07-17 EP EP01953498A patent/EP1303329B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1303329A1 (en) | 2003-04-23 |
| ATE422930T1 (en) | 2009-03-15 |
| JP2004519261A (en) | 2004-07-02 |
| US6602207B1 (en) | 2003-08-05 |
| JP4824258B2 (en) | 2011-11-30 |
| DE60137691D1 (en) | 2009-04-02 |
| AU7594001A (en) | 2002-01-30 |
| EP1303329B1 (en) | 2009-02-18 |
| AU2001275940B2 (en) | 2005-11-10 |
| CA2416023A1 (en) | 2002-01-24 |
| WO2002005886A1 (en) | 2002-01-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2416023C (en) | Guide wire stiffness transition element | |
| JP4488961B2 (en) | High performance coil wire | |
| US5876356A (en) | Superelastic guidewire with a shapeable tip | |
| US5682894A (en) | Guide wire | |
| CA2228346C (en) | Guidewire having a distal tip that can change its shape within a vessel | |
| JP3530189B2 (en) | Anatomically matched steerable PTCA guidewire | |
| US8167821B2 (en) | Multiple diameter guidewire | |
| US6656134B2 (en) | Guide wire with hydrophilically coated tip | |
| US20080269641A1 (en) | Method of using a guidewire with stiffened distal section | |
| US7993285B2 (en) | Medical device having flexible distal tip | |
| WO2004093655A2 (en) | Helical guidewire | |
| JP2006296893A (en) | Guide wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |