WikiPatents - Community Patent Review
Create Free Account  |  License or Sell Your Patent  |  WikiPatents Marketplace  |  WikiPatents Blog
Username:  Password:  
    
Advanced Search
Balloon catheter with distal guide wire lumen    
United States Patent5156594   
Link to this pagehttp://www.wikipatents.com/5156594.html
Inventor(s)Keith; Peter T. (Edina, MN)
AbstractAn over-the-wire balloon dilatation catheter has a stainless steel hypotube catheter shaft, an intermediate sleeve section bonded to the shaft and a distal balloon section connected to the sleeve section. The sleeve section is formed from relatively flexible polymer materials and includes an inner core tube which defines a guide wire lumen extending only through a distal portion of the catheter (including its sleeve and balloon sections) to facilitate fast balloon catheter exchanges. A distal end of the hypotube shaft is crimped laterally and the core tube is nested and bonded within the crimp to provide a proximal outlet for the guide wire lumen. The hypotube shaft provides an inflation lumen for the balloon, with the inflation lumen being continued as an annular inflation lumen through the sleeve section where an outer sleeve is bonded about the core tube and extends from the distal end of the hypotube shaft to the balloon section. A kink-resistant coil structure extends distally from the distal end of the hypotube shaft to provide a gradual change in stiffness along the length of the catheter from the relatively stiff hypotube shaft to the relatively flexible distal portion of the catheter.



 Title Information Submit all comments and votes
 
Patent Text Patent PDF Print Page Summary File History
Plain text PDF images Print Summary File History
Drawing from US Patent 5156594
Balloon catheter with distal guide wire lumen - US Patent 5156594 Drawing
Balloon catheter with distal guide wire lumen
Inventor     Keith; Peter T. (Edina, MN)
Owner/Assignee     SciMed Life Systems, Inc. (Maple Grove, MN)
Patent assignment
All assignments
Publication Date     October 20, 1992
Application Number     07/574,265
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     August 28, 1990
US Classification     604/103.09 604/103.1 604/525 604/528 604/913 606/194
Int'l Classification     A61M 029/00
Examiner     Yasko; John D.
Assistant Examiner     Cermah; Adam J.
Attorney/Law Firm     Kinney & Lange
Address
Parent Case    
Priority Data    
USPTO Field of Search     606/192 606/194 604/95 604/96 604/97 604/98 604/99 604/100 604/101 604/102 604/103 604/282 604/204
Patent Tags     balloon catheter distal guide wire lumen
   
Enter a comma (,) or semicolon (;) between multiple tag words/phrases.
Describe this patent:
 Amusing   
 Clever   
 Complex   
 Efficient   
 Historic   
 Important   
 Innovative   
 Interesting   
 Practical   
 Simple   
[no votes]
Patent WIKI

Share information and news about this patent, including information and news about the technology, inventors, company, ligation and licensing.

 References Submit all comments and votes
 
*references marked with an asterisk below are user-added references
 U.S. References
 
Add a new US reference:  
ReferenceRelevancyCommentsReferenceRelevancyComments
2687131



[0 after 0 votes]
2936760



[0 after 0 votes]
3225762



[0 after 0 votes]
5102403
Alt
604/528
Apr,1992

[0 after 0 votes]
5061273
Yock
606/194
Oct,1991

[0 after 0 votes]
5057120
Farcot
606/194
Oct,1991

[0 after 0 votes]
5050606
Tremulis
600/486
Sep,1991

[0 after 0 votes]
5047045
Arney
606/194
Sep,1991

[0 after 0 votes]
5042985
Elliott
606/192
Aug,1991

[0 after 0 votes]
5035705
Burns

Jul,1991

[0 after 0 votes]
5034001
Garrison
606/198
Jul,1991

[0 after 0 votes]
5032113
Burns
604/102.02
Jul,1991

[0 after 0 votes]
4998923
Samson
606/194
Mar,1991

[0 after 0 votes]
4998917
Gaiser
604/103.13
Mar,1991

[0 after 0 votes]
4994032
Sugiyama
604/103.09
Feb,1991

[0 after 0 votes]
4988356
Crittenden
606/192
Jan,1991

[0 after 0 votes]
4953553
Tremulis
600/486
Sep,1990

[0 after 0 votes]
4946466
Pinchuk
606/194
Aug,1990

[0 after 0 votes]
4944745
Sogard
606/194
Jul,1990

[0 after 0 votes]
4943278
Euteneuer
606/194
Jul,1990

[0 after 0 votes]
4940062
Hampton
600/585
Jul,1990

[0 after 0 votes]
4928693
Goodin
600/434
May,1990

[0 after 0 votes]
4921478
Solano
604/509
May,1990

[0 after 0 votes]
4917088
Crittenden
606/194
Apr,1990

[0 after 0 votes]
4906241
Noddin
606/194
Mar,1990

[0 after 0 votes]
4896670
Crittenden
606/194
Jan,1990

[0 after 0 votes]
4877031
Conway
606/194
Oct,1989

[0 after 0 votes]
4846174
Willard
606/194
Jul,1989

[0 after 0 votes]
4838268
Keith

Jun,1989

[0 after 0 votes]
4824435
Giesy
604/500
Apr,1989

[0 after 0 votes]
4820349
Saab
606/194
Apr,1989

[0 after 0 votes]
4771777
Horzewski
606/194
Sep,1988

[0 after 0 votes]
4762129
Bonzel
606/194
Aug,1988

[0 after 0 votes]
4748982
Horzewski
606/192
Jun,1988

[0 after 0 votes]
4705507
Boyles
604/99.04
Nov,1987

[0 after 0 votes]
4662368
Hussein
606/15
May,1987

[0 after 0 votes]
4597755
Samson
604/103.09
Jul,1986

[0 after 0 votes]
4468224
Enzmann
604/247
Aug,1984

[0 after 0 votes]
4289128
Rusch
128/207.15
Sep,1981

[0 after 0 votes]
3976720
Hammer
525/183
Aug,1976

[0 after 0 votes]
4798598
Bonello
604/528
Dec,1969

[0 after 0 votes]
 Foreign References
 Other References
 Market Review Submit all comments and votes
   
Market Size
Estimate the gross annual revenues of the relevant market sector:
> $10B
$5B - $10B
$2B - $5B
$500M - $2B
$100M - $500M
$10M - $100M
$1M - $10M
$500K - $1M
$100K - $500K
< $100K
[No votes]
$0
 
$0   $2.5B   $5B   $7.5B   $10B
Market Share
Estimate the percentage of the relevant market sector this invention will capture:
75% - 100%
50% - 74.99%
25% - 49.99%
10 - 24.99%
5 - 9.99%
2 - 4.99%
1 - 1.99%
< 1%
[No votes]
0.0%
 
0%   25%   50%   75%   100%
Reasonable Royalty
What percentage of gross sales should the inventor or assignee be paid?
75% - 100%
50% - 74.99%
25% - 49.99%
10 - 24.99%
5 - 9.99%
2 - 4.99%
1 - 1.99%
< 1%
[No votes]
0.0%
 
0%   25%   50%   75%   100%
Public's "Guesstimation" of Royalty Value
Market SizeN/A[No votes]
xMarket ShareN/A[No votes]
xReasonable RoyaltyN/A[No votes]

N/A

License Availablity
If you are NOT the owner or assignee, answer here:
Yes, license is available for purchase

No, license is not currently available



[No votes]
License Availablity
If you ARE the owner or assignee, answer here:
Yes, license is available for purchase

No, license is not currently available



[No votes]
Competitive Advantage
Does this invention have a significant competitive advantage over similar technologies?
Yes

No



[No votes]
Most helpful competitive advantage comment
[No comments]

Commercial Alternatives
Are there viable commercial alternatives for this invention?
Yes

No



[No votes]
Most helpful commercial alternative comment
[No comments]

 Technical Review Submit all comments and votes
 Claims Submit all comments and votes
 


What is claimed is:

1. A balloon dilatation catheter comprising:

a thin-walled, high strength metallic tube having a longitudinal inflation lumen extending therethrough from a proximal end to a distal end;

an intermediate sleeve section extending distally from the metallic tube, the sleeve section being more flexible than the metallic tube and including an inner core tube which has a longitudinal guide wire lumen extending therethrough and an outer sleeve which extends over a proximal segment of the core tube to define an annular inflation lumen between the inner core tube and the outer sleeve that is in fluid communication with the inflation lumen of the metallic tube, with the guide wire lumen having an outlet at a proximal end of the proximal segment of the core tube and with the core tube having a distal segment which extends distally beyond a distal end of the outer sleeve;

means for exposing the guide wire lumen outlet at the proximal end of the core tube to an exterior of the catheter adjacent and proximal to the distal end of the metallic tube;

an inflatable balloon extending over the distal segment of the core tube, the balloon having its proximal end connected to the distal end of the outer sleeve and having its distal end connected to the core tube so that an interior of the balloon is in fluid communication with the annular inflation lumen in the intermediate sleeve section; and

a coil member affixed about the outer sleeve of the intermediate sleeve section adjacent the distal end of the metallic tube, the coil member having its coils spaced increasingly apart as it extends distally from the metallic tube.

2. The balloon dilatation catheter of claim 1 wherein the means for exposing includes a longitudinal crimp adjacent the distal end of the metallic tube which extends laterally inwardly from one side of the metallic tube, the crimp having a proximal transition region and a distal bonding region, the proximal end of the inner core tube being nested within the distal bonding region of the longitudinal crimp of the metallic tube and bonded thereto, and with the outer sleeve extending over at least a distal portion of the bonding region and sealably affixed thereabout.

3. The balloon dilatation catheter of claim 2 wherein the metallic tube is formed from a proximal relatively long stainless steel tube and a distal relatively short stainless steel tube bonded thereto, with the longitudinal crimp being in the distal tube.

4. The balloon dilatation catheter of claim 3 wherein the outer diameter of the proximal tube is smaller than the outer diameter of the distal tube.

5. The balloon dilatation catheter of claim 1 wherein the coil member is formed from a spirally-shaped ribbon.

6. The balloon dilatation catheter of claim 1, and further comprising:

a sleeve enveloping the coil member to maintain the coil member in secured engagement to the intermediate sleeve section.

7. The balloon dilatation catheter of claim 1 wherein the metallic tube is formed from a proximal relatively long stainless steel tube and a distal relatively short stainless steel tube affixed thereto.

8. The balloon dilatation catheter of claim 7 wherein the outer diameter of the proximal tube is smaller than the outer diameter of the distal tube.

9. The balloon dilatation catheter of claim 1 wherein the outer sleeve is formed integrally with the balloon.

10. The balloon dilatation catheter of claim 1 wherein the inner core tube is formed from high density polyethylene.

11. The balloon dilatation catheter of claim 1 wherein the outer sleeve is formed from high density polyethylene.

12. The balloon dilatation catheter comprising:

a first thin-walled, high strength, relatively inflexible tube having a longitudinal inflation lumen extending therethrough from a proximal end to a distal end, the first tube having, at the distal end thereof, a longitudinal crimp extending laterally inwardly from one side of the first tube with the crimp having a proximal transition region and a distal bonding region;

a second relatively flexible core tube having a longitudinal guide wire lumen extending therethrough from a proximal end to a distal end, with the proximal end of the second tube being nested within the distal bonding region of the longitudinal crimp of the first tube and bonded thereto so that the second tube extends distally from the first tube;

a balloon assembly having an elongated proximal waist segment, an intermediate expandable segment and a distal waist segment, the proximal segment extending over at least a distal portion of the distal bonding region and sealably affixed thereabout so that the inflation lumen is in fluid communication with an interior of the balloon assembly through the proximal segment, with the balloon assembly extending distally from the distal bonding region over the second tube to a second bonding region where the distal waist segment is sealably affixed about the second tube; and

a coil member affixed about at least a proximal portion of the proximal waist segment to extend distally from the distal bonding region.

13. The balloon dilatation catheter of claim 12 wherein the coil member is formed from a spirally-shaped ribbon.

14. The balloon dilatation catheter of claim 12, wherein the coil member has its coils spaced increasingly apart as it extends distally from the first tube.

15. The balloon dilatation catheter of claim 12, and further comprising:

a sheath enveloping the coil member and maintaining the coil member about the proximal waist segment of the balloon assembly.

16. The balloon dilatation catheter of claim 12 wherein the first tube is formed from a proximal, relatively long stainless steel tube and a distal relatively short stainless steel tube bonded thereto, with the longitudinal crimp being in the distal tube.

17. The balloon dilatation catheter of claim 16 wherein the outer diameter of the proximal tube is smaller than the outer diameter of the distal tube.

18. The balloon dilatation catheter of claim 12 wherein the second tube is formed from high density polyethylene.

19. In an elongate dilatation catheter of the type that can be slidably moved along a guide wire that can extend past a distal end of the catheter, wherein the guide wire is received in a guide wire lumen of the catheter, the guide wire extending from a distal guide wire lumen opening to a proximal guide wire lumen opening disposed in a portion of the catheter that is spaced distally from a proximal end of the catheter, the dilatation catheter including an inflatable balloon and an inflation lumen extending through the catheter separate from the guide wire lumen, an improvement comprising:

a first proximal shaft section of the catheter defined by a relatively rigid metallic tube;

a second shaft section disposed distally of the first shaft section, the second shaft section being relatively more flexible than the first shaft section; and

a transition section disposed between the first shaft section and the second shaft section, the transition section including a transition member comprising a metallic element of gradually diminished dimension, the transition member extending adjacent to the proximal guide wire lumen opening, and the transition member having gradually decreasing rigidity in the distal direction to provide a relatively smooth transition between the first shaft section and the second shaft section.

20. The improved catheter of claim 19 in which the transition member is adapted to impart a tapering transition in flexibility between the relatively rigid proximal portion and the relatively more flexible second section.

21. The improved catheter of claim 19 in which the transition member extends at least in part across the guide wire lumen proximal opening.

22. The improved catheter of claim 19 in which the transition member extends at least in part distally of the guide wire lumen proximal opening.

23. The improved catheter of claim 19 in which the transition member comprises:

a coil spring located in a wall of the relatively more flexible portion of the catheter distally of the proximal lumen opening.

24. The improved catheter of claim 23 in which the coil spring is of gradually greater flexibility in a distal direction.

25. The improved catheter of claim 23 in which the coil spring is located around the guide wire lumen.

26. The improved catheter of claim 19 in which the transition member is located at least in part around the inflation lumen.

27. The improved catheter of claim 19 in which the transition member is connected to the first shaft section.

28. In an elongate dilatation catheter of the type that can be slidably moved along a guide wire that can extend past a distal end of the catheter, wherein the guide wire is received in a guide wire lumen of the catheter, the guide wire extending from a distal guide wire lumen opening to a proximal guide wire lumen opening located in a portion of the catheter that is spaced distally from a proximal end of the catheter, the dilatation catheter including an inflatable balloon and an inflation lumen extending through the catheter separate from the guide wire lumen, an improvement comprising:

a first proximal shaft section of the catheter defined by a relatively rigid metallic tube;

a second shaft section disposed distally of the first shaft section, the second shaft section being relatively more flexible than the first shaft section; and

a transition section disposed between the first shaft section and the second shaft section, the transition section including a transition member extending adjacent to the proximal guide wire lumen opening, the transition member having gradually decreasing rigidity in the distal direction to provide a relatively smooth transition between the first section of the shaft and the second section of the shaft.

29. The improved catheter of claim 28 in which the transition member is adapted to impart a tapering transition in flexibility between the relatively rigid first section and the relatively more flexible second section of the shaft.

30. The improved catheter of claim 28 in which the transition member extends at least in part across the guide wire lumen proximal opening.

31. The improved catheter of claim 28 in which the transition member extends at least in part distally of the guide wire lumen proximal opening.

32. The improved catheter of claim 28 in which the transition member extends at least in part around the inflation lumen.

33. The improved catheter of claim 28 in which the transition member is connected to the first shaft section.

34. A balloon dilatation catheter comprising:

a metallic tube defining a first shaft section having a proximal end and a distal end;

a second shaft section, more flexible than the metallic tube, disposed distally of the first shaft section;

the first and second shaft sections having an inflation lumen defined therethrough which extends from the proximal end of the metallic tube to the distal end of the second shaft section;

a dilatation balloon attached to the distal end of the second shaft section, the dilatation balloon being in fluid communication with the inflation lumen such that inflation pressure may be provided to the balloon therethrough;

a transition section interposed between the first shaft section and the second shaft section, the transition section including a transition member including a crimp defining the proximal guide wire outlet and configured to provide stiffness which gradually decreases d