US4983166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balloon catheter and method of use of the same
Assignee: Individual
•
Filing: 1990-04-16
•
Granted: 1991-01-08
•
Expires: 2010-04-16
Abstract
Abstract A balloon catheter comprised a balloon catheter body, a balloon, a main passage and an auxiliary passage. The balloon is provided on the periphery of the tip portion of the catheter body to inflate for blocking a bloodstream at a desired site inside blood vessels. The auxiliary passage is provided for inflating the balloon. The main passage is provided behind the balloon, having an opening to eject a drug. The tip portion of the balloon catheter is inserted into one of branches of the blood vessel near targeted affected part. A fluid is injected into the balloon so that the balloon blocks a bloodstream in the branches. Therefore, a drug is ejected through the main passage of the balloon catheter into other branches.
Inventors
- 👤 Yoshiharu Yamawaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:02
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
160 words
A balloon catheter for injecting a drug to an affected part through an artery, comprising: a catheter body having a circulatory curved tip end portion, whereby said tip end portion can be inserted from a thicker artery into a thinner artery diverging from said thicker artery at an acute angle; a main passage provided in said catheter body for transporting and ejecting said drug, said main passage having an opening formed on a peripheral surface of said curved tip end portion and a curved portion smoothly curved toward said opening whereby a drug ejecting member and a thinner catheter are allowed to go through said main passage; a balloon provided around the periphery in said curved tip end portion between said tip end and said main passage, for inflating to block a bloodstream at a desired site inside said thinner artery; and an auxiliary passage provided in said catheter body for injecting fluid into said balloon for inflating said balloon.
Claim 2
Dependent Claim
160 words
A balloon catheter for injecting a drug to an affected part through an artery, comprising: a catheter body having a circulatory curved tip end portion, whereby said tip end portion can be inserted from a thicker artery into a thinner artery diverging from said thicker artery at an acute angle; a main passage provided in said catheter body for transporting and ejecting said drug, said main passage having an opening formed on a peripheral surface of said curved tip end portion and a curved portion smoothly curved toward said opening whereby a drug ejecting member and a thinner catheter are allowed to go through said main passage; a balloon provided around the periphery in said curved tip end portion between said tip end and said main passage, for inflating to block a bloodstream at a desired site inside said thinner artery; and an auxiliary passage provided in said catheter body for injecting fluid into said balloon for inflating said balloon.
Claim 3
Dependent Claim
20 words
A balloon catheter according to claim 1 wherein said opening is provided about 1 to 2 cm behind said balloon.
Claim 4
Dependent Claim
21 words
A balloon catheter according to claim 2, wherein the tip end of said catheter body is formed into a hemisphere shape.
Claim 5
Dependent Claim
34 words
A balloon catheter according to claim 1, further comprising a pair of tubes each having valves and are connected to said catheter body and lead to said main passage and said auxiliary passage, respectively.
References Cited (Backward Citations)
US550238A
Cited
US2642874A
Cited
US3736939A
Cited
US3977408A
Cited
US4276874A
Cited
US4299226A
Cited
JPS57195470A
Cited
US4406653A
Cited
JPS59177064A
Cited
US4714460A
Cited
US4658812A
Cited
DE3441586A1
Cited
US4631054A
Cited
US4741328A
Cited
US4762125A
Cited
US4790315A
Cited
US4777951A
Cited
US4771776A
Cited
US4917667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |