Patent US5480388A successfully refreshed from Google Patents.
US5480388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-automatic cannulation device
Assignee: Individual
•
Filing: 1993-12-03
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Granted: 1996-01-02
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Expires: 2013-12-03
Abstract
Abstract An improved intravascular catheter placement device for semi-automatic insertion, i.e. manually triggered self-propelled insertion, of an intravascular catheter into the interior of a blood vessel comprising a hollow needle, an intravascular catheter concentric with said hollow needle, a chamber in communication with said hollow needle wherein the pressure within said chamber is a vacuum pressure and self-propelling means for moving said catheter into a blood vessel upon penetration of the wall of the blood vessel by the tip of the hollow needle. The self-propelling means acting upon the catheter is manually actuated by the operator of the device upon visualization of the backflow of blood occurring upon penetration of the blood vessel by the tip of the needle, said backflow of blood being accelerated into said chamber by the vacuum pressure present within said chamber. As a result of the combination of accelerated blood backflow and of manually triggered self-propelled advancement of the catheter, catheters insertion into blood vessels is significantly improved.
Inventors
- 👤 Filiberto P. Zadini
- 👤 Giorgio C. Zadini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:37
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0612; A61M5/00; A61M5/14; A61M5/158; A61M2005/1585; A61M2005/1587; A61M2005/1588; A61M5/178; A61M5/31; A61M2005/3112; A61M25/0693
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
120 words
The intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; a chamber, wherein the pressure within said chamber is a vacuum pressure after the needle is inserted in body tissue, said chamber being in communication with said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 2
Dependent Claim
120 words
The intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; a chamber, wherein the pressure within said chamber is a vacuum pressure after the needle is inserted in body tissue, said chamber being in communication with said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 3
Dependent Claim
111 words
The device of claim 1, further comprising: a housing wherein said chamber and said propelling means are housed, said hollow needle projecting forward from said housing and communicating with said chamber; wherein said intravascular catheter comprises a hollow catheter shaft slideable along said hollow needle, and a catheter hub adapted to engage with said propelling means, said hollow catheter shaft projecting from said catheter hub; wherein said manually actuating means includes a manually operable lever provided with a retaining tooth, releasably retaining the catheter hub in a rearward position, said catheter hub being urged forward by said self-propelling means and self-propelled to an advanced position upon manual displacement of said lever.
Claim 4
Dependent Claim
63 words
The device of claim 2 wherein said means for manually actuating said self-propelling means comprises: a manually operable lever provided with a retaining tooth, releasably retaining an interface member interposed between said propelling means and said catheter in a rearward position, said interface member being urged forward by said self-propelling means and self-propelled to an advanced position upon manual displacement of said lever.
Claim 5
Dependent Claim
41 words
The device of claim 1 further comprising: means for allowing the operator to visualize the backflow of the blood occurring upon blood vessel penetration to manually actuate said propelling means, said blood being drawn by a vacuum pressure within said chamber.
Claim 6
Dependent Claim
25 words
The device of claim 4 wherein said means for visualization of the blood by the operator includes: at least one transparent wall of said chamber.
Claim 7
Dependent Claim
16 words
The device of claim 4 further comprising: a vacuum capsule with at least one transparent wall.
Claim 8
Dependent Claim
11 words
The device of claim 1 wherein said self-propelled means is magnetic.
Claim 9
Dependent Claim
11 words
The device of claim 1 wherein said self-propelled means is pneumatic.
Claim 10
Dependent Claim
12 words
The device of claim 1 wherein said self-propelled means is expandable material.
Claim 11
Dependent Claim
129 words
The device of claim 1 further comprising: means for creation of a vacuum pressure within said vacuum chamber, said means for creation of a vacuum pressure being actuable upon insertion of said needle into tissues overlaying the blood vessel to create vacuum pressure within said chamber, said vacuum pressure being sustainable by the sealing of said hollow needle upon insertion of said needle into said tissues overlaying the blood vessel, said hollow needle being sealable by said tissues, upon said insertion of the needle into said tissues, said vacuum pressure causing backflow of blood to accelerate into said vacuum chamber upon penetration of said needle into said blood vessel, said self-propelling means being manually releasable upon visualization of said blood, thereto to insert said catheter into said blood vessel.
Claim 12
Dependent Claim
175 words
The device of claim 1 further comprising: a piston axially slideable in an airtight fashion within said chamber communicating with said hollow needle, said piston being urged to rearwardly withdraw by withdrawing means and being retainable in a forward position within said chamber, said piston being releasable from its forward position upon insertion of said needle into the tissues overlaying said blood vessel, to withdraw by said withdrawing means to a partial rearward position as far as allowed by said vacuum pressure being created in said vacuum chamber in front of said piston as a result of a combined rearward movement of said piston and of airtight sealing of said hollow needle, said hollow needle being sealed by said tissues overlaying the blood vessel, upon said insertion of the needle into said tissues, said vacuum pressure causing backflow of blood to accelerate into said vacuum chamber upon penetration of said needle into said blood vessel, said self-propelling means being manually releasable upon visualization of said blood, thereto to insert said catheter into said blood vessel.
Claim 13
Dependent Claim
163 words
The device of claim 1 further comprising: a vacuum capsule having a plug pierceable by a posterior segment of said hollow needle in air-fluids communication with said hollow needle, said plug being pierceable upon insertion of said needle into tissues overlaying said blood vessel, said pierceable plug being airtightly sealable around said posterior segment of said hollow needle, to form said vacuum chamber in air-fluids communication with said hollow needle, to create a vacuum pressure extending to said hollow needle, said vacuum pressure being sustainable by the sealing of said hollow needle upon insertion of said needle into said tissues overlaying the blood vessel, said hollow needle being sealable by said tissues, upon said insertion of the needle into said tissues, said vacuum pressure causing backflow of blood to accelerate into said vacuum chamber upon penetration of said needle into said blood vessel, said self-propelling means being manually releasable upon visualization of said blood, thereto to insert said catheter into said blood vessel.
Claim 14
Dependent Claim
113 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; a chamber, wherein the pressure within said chamber is a partial vacuum pressure, said chamber being in communication with said hollow needle. means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 15
Dependent Claim
113 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; a chamber, wherein the pressure within said chamber is a partial vacuum pressure, said chamber being in communication with said hollow needle. means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 16
Dependent Claim
113 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; a chamber, wherein the pressure within said chamber is below the atmospheric pressure, said chamber being in communication with said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 17
Dependent Claim
113 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; a chamber, wherein the pressure within said chamber is below the atmospheric pressure, said chamber being in communication with said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 18
Dependent Claim
115 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; a chamber in communication with said hollow needle, said chamber being adapted to receive vacuum pressure upon body tissues sealing of said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 19
Dependent Claim
115 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; a chamber in communication with said hollow needle, said chamber being adapted to receive vacuum pressure upon body tissues sealing of said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 20
Dependent Claim
131 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; side wall means for defining a blood-receiving chamber having an opening in communication with said hollow needle, through which blood is receivable into said chamber, said chamber including at least one displaceable member to change the volume within said chamber; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 21
Dependent Claim
131 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; side wall means for defining a blood-receiving chamber having an opening in communication with said hollow needle, through which blood is receivable into said chamber, said chamber including at least one displaceable member to change the volume within said chamber; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber, said actuating means being manually actuable.
Claim 22
Dependent Claim
127 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; side wall means for defining a blood -receiving chamber having an opening in communication with said hollow needle, through which blood is receivable into said chamber, said chamber including at least one deformable member to change the volume within said chamber; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber.
Claim 23
Dependent Claim
127 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; side wall means for defining a blood -receiving chamber having an opening in communication with said hollow needle, through which blood is receivable into said chamber, said chamber including at least one deformable member to change the volume within said chamber; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn by said vacuum pressure toward said chamber.
Claim 24
Dependent Claim
102 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; means for applying a suction to said hollow needle to cause blood to backflow within said hollow needle upon blood vessel penetration by said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon said backflow of blood occurring upon blood vessel penetration.
Claim 25
Dependent Claim
102 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; means for applying a suction to said hollow needle to cause blood to backflow within said hollow needle upon blood vessel penetration by said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon said backflow of blood occurring upon blood vessel penetration.
Claim 26
Dependent Claim
107 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; means for accelerating the backflow response time upon blood vessel penetration to cause said propelling means to advance the intravascular catheter immediately upon blood vessel penetration by said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon said accelerated backflow of blood occurring upon blood vessel penetration.
Claim 27
Dependent Claim
107 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; means for accelerating the backflow response time upon blood vessel penetration to cause said propelling means to advance the intravascular catheter immediately upon blood vessel penetration by said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon said accelerated backflow of blood occurring upon blood vessel penetration.
Claim 28
Dependent Claim
122 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; means for enhancing the pressure differential between the pressure within the blood vessel and the atmospheric pressure within a chamber in communication with said blood vessel via said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn toward said chamber by said enhanced pressure differential, said actuating means being manually actuable.
Claim 29
Dependent Claim
122 words
An intravascular catheter device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; means for enhancing the pressure differential between the pressure within the blood vessel and the atmospheric pressure within a chamber in communication with said blood vessel via said hollow needle; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel, upon backflow of blood occurring upon blood vessel penetration, said blood being drawn toward said chamber by said enhanced pressure differential, said actuating means being manually actuable.
Claim 30
Dependent Claim
115 words
An intravascular catheter placement device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; means for sensing pressure differential between the pressure within a penetrated blood vessel and the pressure within a chamber in communication with said blood vessel via said hollow needle, said means for sensing pressure differential resulting in backflow of blood toward said chamber occurring upon blood vessel penetration; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel.
Claim 31
Dependent Claim
115 words
An intravascular catheter placement device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; means for sensing pressure differential between the pressure within a penetrated blood vessel and the pressure within a chamber in communication with said blood vessel via said hollow needle, said means for sensing pressure differential resulting in backflow of blood toward said chamber occurring upon blood vessel penetration; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel.
Claim 32
Dependent Claim
114 words
An intravascular catheter placement device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; side wall means for defining a blood-receiving chamber having an opening in communication with said hollow needle, through which blood is receivable into said chamber, said chamber including at least one displaceable member, said displaceable member being displaceable in response to pressure changes occurring within said chamber; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel.
Claim 33
Dependent Claim
114 words
An intravascular catheter placement device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; side wall means for defining a blood-receiving chamber having an opening in communication with said hollow needle, through which blood is receivable into said chamber, said chamber including at least one displaceable member, said displaceable member being displaceable in response to pressure changes occurring within said chamber; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel.
Claim 34
Dependent Claim
114 words
An intravascular catheter placement device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; side wall means for defining a blood-receiving chamber having an opening in communication with said hollow needle, through which blood is receivable into said chamber, said chamber including at least one deformable member, said deformable member being deformable in response to pressure changes occurring within said chamber; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel.
Claim 35
Dependent Claim
114 words
An intravascular catheter placement device for insertion of an intravascular catheter into the interior of a blood vessel comprising: an intravascular catheter; a hollow needle, said catheter being concentric to said hollow needle; side wall means for defining a blood-receiving chamber having an opening in communication with said hollow needle, through which blood is receivable into said chamber, said chamber including at least one deformable member, said deformable member being deformable in response to pressure changes occurring within said chamber; means for self-propelled advancement of said intravascular catheter into the interior of a blood vessel; means for manually actuating said means for self-propelled advancement of said catheter into the interior of a blood vessel.
References Cited (Backward Citations)
US5186712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-01-01 | 1999-07-03 | 2000-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-01-01 | 2003-07-03 | 2004-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-01-01 | 2007-07-03 | 2008-01-02 | $7700.00 | Window Closed / Lapsed |