US5137514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflation syringe assembly for percutaneous transluminal angioplasty
Assignee: Medtronic Inc
•
Filing: 1990-11-01
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Granted: 1992-08-11
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Expires: 2010-11-01
Abstract
Abstract An angioplasty syringe has a half-threaded surface which engages a threaded hydraulic plunger for generating balloon inflating pressure. The threaded nut is part of a component having a cam which engages a cam is part of a pistol trigger. The cam positively raises and closes the threaded surface depending upon the trigger position.
Inventors
- 👤 James P. Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:36
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/10; A61M25/1018; A61M25/10181; A61M25/10182; A61M25/10184; A61M25/104; A61M25/10187
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
212 words
In a syringe assembly for accurate pressurization and rapid depressurization of a balloon catheter, the syringe assembly comprising: a first threaded surface for advancement and retraction of a plunger within a barrel of the syringe assembly, said first threaded surface being on an elongated rod having a plunger in operative interengagement with the barrel; a second threaded surface for engagement and disengagement with said first threaded surface to control speed of advancement and retraction of said plunger, said second threaded surface being on a component that is moveable in a direction generally transverse to the first threaded surface; the improvement wherein; a first cam surface is carried by said component and slanted at an angle to the axis of said barrel; a second cam surface is carried by a trigger member moveable in a direction generally parallel to the barrel and slanted at an angle to the axis of said barrel; said second cam surface positively engaging said first cam surface to move said component towards the first threaded surface when said trigger is moved in a first direction and to positively move said component away from said first threaded surface when said trigger is moved in a second direction, and a spring means for urging said trigger in said first direction.
Claim 2
Dependent Claim
212 words
In a syringe assembly for accurate pressurization and rapid depressurization of a balloon catheter, the syringe assembly comprising: a first threaded surface for advancement and retraction of a plunger within a barrel of the syringe assembly, said first threaded surface being on an elongated rod having a plunger in operative interengagement with the barrel; a second threaded surface for engagement and disengagement with said first threaded surface to control speed of advancement and retraction of said plunger, said second threaded surface being on a component that is moveable in a direction generally transverse to the first threaded surface; the improvement wherein; a first cam surface is carried by said component and slanted at an angle to the axis of said barrel; a second cam surface is carried by a trigger member moveable in a direction generally parallel to the barrel and slanted at an angle to the axis of said barrel; said second cam surface positively engaging said first cam surface to move said component towards the first threaded surface when said trigger is moved in a first direction and to positively move said component away from said first threaded surface when said trigger is moved in a second direction, and a spring means for urging said trigger in said first direction.
Claim 3
Dependent Claim
20 words
The assembly of claim 1 wherein said trigger member is positioned in a pistol grip extending downwardly from said barrel.
Claim 4
Dependent Claim
15 words
The assembly of claim 2 wherein the spring means is mounted in said pistol grip.
Claim 5
Dependent Claim
30 words
The assembly of claim 2 wherein the rod is supported by a bearing member having transversely extending bosses which are held in holes formed in the barrel and pistol grip.
Claim 6
Dependent Claim
19 words
The assembly of claim 1 wherein said cam surface on said trigger is in the form of a T.
Claim 7
Dependent Claim
21 words
The assembly of claim 5 wherein said component has a T shaped slot engaging the T shaped cam on the trigger.
Claim 8
Dependent Claim
37 words
The assembly of claim 1 wherein said component is mounted in a bearing member for said rod, said bearing member being held against rearward movement by a rear portion of the assembly through which the rod extends.
Claim 9
Dependent Claim
25 words
The assembly of claim 1 wherein said trigger is mounted on ribs formed in the interior of a hollow handle extending downwardly from said barrel.
Claim 10
Dependent Claim
200 words
In a syringe assembly for accurate pressurization and rapid depressurization of a balloon catheter, the syringe assembly comprising: a first threaded surface for advancement and retraction of a plunger within a barrel of the syringe assembly, said first threaded surface being on an elongated rod having a plunger in operative interengagement with the barrel; a second threaded surface for engagement and disengagement with said first threaded surface to control speed of advancement and retraction of said plunger, said second threaded surface being on a component that is moveable in a direction generally transverse to the first threaded surface; the improvement wherein; a first cam surface is carried by a trigger member positioned in a pistol grip extending downwardly from said barrel, said trigger member being moveable in a direction generally parallel to the barrel; said second cam surface positively engaging said first cam surface to move said component towards the first threaded surface when said trigger is moved in a first direction and to positively move said component away from said first threaded surface when said trigger is moved in a second direction, and a spring means mounted in said pistol grip for urging said trigger in said first direction.
Claim 11
Dependent Claim
200 words
In a syringe assembly for accurate pressurization and rapid depressurization of a balloon catheter, the syringe assembly comprising: a first threaded surface for advancement and retraction of a plunger within a barrel of the syringe assembly, said first threaded surface being on an elongated rod having a plunger in operative interengagement with the barrel; a second threaded surface for engagement and disengagement with said first threaded surface to control speed of advancement and retraction of said plunger, said second threaded surface being on a component that is moveable in a direction generally transverse to the first threaded surface; the improvement wherein; a first cam surface is carried by a trigger member positioned in a pistol grip extending downwardly from said barrel, said trigger member being moveable in a direction generally parallel to the barrel; said second cam surface positively engaging said first cam surface to move said component towards the first threaded surface when said trigger is moved in a first direction and to positively move said component away from said first threaded surface when said trigger is moved in a second direction, and a spring means mounted in said pistol grip for urging said trigger in said first direction.
Claim 12
Dependent Claim
20 words
The assembly of claim 9 wherein said cam surfaces are slanted at an angle to the axis of the barrel.
Claim 13
Dependent Claim
30 words
The assembly of claim 9 wherein the rod is supported by a bearing member having transversely extending bosses which are held in holes formed in the barrel and pistol grip.
Claim 14
Dependent Claim
19 words
The assembly of claim 10 wherein said cam surface on said trigger is in the form of a T.
Claim 15
Dependent Claim
21 words
The assembly of claim 12 wherein said component has a T shaped slot engaging the T shaped cam on the trigger.
Claim 16
Dependent Claim
37 words
The assembly of claim 9 wherein said component is mounted in a bearing member for said rod, said bearing member being held against rearward movement by a rear portion of the assembly through which the rod extends.
Claim 17
Dependent Claim
25 words
The assembly of claim 9 wherein said trigger is mounted on ribs formed in the interior of a hollow handle extending downwardly from said barrel.
Claim 18
Dependent Claim
206 words
In a syringe assembly for accurate pressurization and rapid depressurization of a balloon catheter, the syringe assembly comprising: a first threaded surface for advancement and retraction of a plunger within a barrel of the syringe assembly, said first threaded surface being on an elongated rod having a plunger in operative interengagement with the barrel; a second threaded surface for engagement and disengagement with said first threaded surface to control speed of advancement and retraction of said plunger, said second threaded surface being on a component that is moveable in a direction generally transverse to the first threaded surface; the improvement wherein; a cam surface is carried by said component; a second cam surface is carried by a trigger member mounted on ribs formed in the interior of a hollow handle extending downwardly from said barrel, and moveable in a direction generally parallel to the barrel; said second cam surface positively engaging said first cam surface to move said component towards the first threaded surface when said trigger is moved in a first direction and to positively move said component away from said first threaded surface when said trigger is moved in a second direction, and a spring means for urging said trigger in said first direction.
Claim 19
Dependent Claim
206 words
In a syringe assembly for accurate pressurization and rapid depressurization of a balloon catheter, the syringe assembly comprising: a first threaded surface for advancement and retraction of a plunger within a barrel of the syringe assembly, said first threaded surface being on an elongated rod having a plunger in operative interengagement with the barrel; a second threaded surface for engagement and disengagement with said first threaded surface to control speed of advancement and retraction of said plunger, said second threaded surface being on a component that is moveable in a direction generally transverse to the first threaded surface; the improvement wherein; a cam surface is carried by said component; a second cam surface is carried by a trigger member mounted on ribs formed in the interior of a hollow handle extending downwardly from said barrel, and moveable in a direction generally parallel to the barrel; said second cam surface positively engaging said first cam surface to move said component towards the first threaded surface when said trigger is moved in a first direction and to positively move said component away from said first threaded surface when said trigger is moved in a second direction, and a spring means for urging said trigger in said first direction.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-11 | 1996-02-10 | 1996-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-11 | 2000-02-10 | 2000-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-11 | 2004-02-10 | 2004-08-11 | $7700.00 | Window Closed / Lapsed |