US4795426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter introducing device and method of placing catheter
Assignee: SOLUTECH Inc A CORP OF
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Filing: 1987-04-02
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Granted: 1989-01-03
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Expires: 2007-04-02
Abstract
Abstract A catheter placement cannula is disclosed having a passageway therethrough to receive a catheter. The cannula is made up of a substantially tubular body portion and a tip portion made of pliable material. The tip portion has a shape retaining memory such that the end of the tip is naturally flattened in shape to provide a seal for preventing the backflow of blood or other fluids when the cannula is in place in a body.
Inventors
- 👤 Jeffrey S. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:46
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0662; A61B17/3431; A61B17/3498; A61B17/3439; A61B2017/3441; Y; Y10; Y10T; Y10T137/00; Y10T137/3584
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
113 words
A cannula for placing a catheter or the like in an animal comprising: (a) a substantially tubular body portion having sufficient rigidity for placement in the animal, the body portion having a passageway therethrough, the body portion being made of a material of sufficient rigidity to receive the catheter and, the body portion further having a flared proximal end for easily receiving the catheter; and (b) a self-sealing substantially straight tip portion made of pliable material of sufficient rigidity to receive the catheter, the tip portion being connected to the body portion, the tip portion being formed of opposing flaps, wherein the tip portion has a shape retaining memory to form a seal.
Claim 2
Dependent Claim
113 words
A cannula for placing a catheter or the like in an animal comprising: (a) a substantially tubular body portion having sufficient rigidity for placement in the animal, the body portion having a passageway therethrough, the body portion being made of a material of sufficient rigidity to receive the catheter and, the body portion further having a flared proximal end for easily receiving the catheter; and (b) a self-sealing substantially straight tip portion made of pliable material of sufficient rigidity to receive the catheter, the tip portion being connected to the body portion, the tip portion being formed of opposing flaps, wherein the tip portion has a shape retaining memory to form a seal.
Claim 3
Dependent Claim
12 words
The cannula according to claim 1 wherein the body portion is pliable.
Claim 4
Dependent Claim
20 words
The cannula according to claim 1 wherein the body portion and the tip portion are formed of the same material.
Claim 5
Dependent Claim
29 words
The cannula according to claim 1 wherein the composition of the cannula is selected from the class of material consisting of polyethylene, rubber, latex, polypropylene, fluororesin, silicone and polyvinylchloride.
Claim 6
Dependent Claim
21 words
The cannula according to claim 1 in combination with the catheter, wherein the catheter is in sealing engagement with the cannula.
Claim 7
Independent Claim
158 words
A method of introducing a catheter or the like into an animal comprising: (a) inserting a cannula into an opening in the animal, said cannula comprising a substantially tubular body portion having sufficient rigidity for placement in the animal, the body portion having a passageway therethrough, the body portion being further made of a material of sufficient rigidity to receive the catheter, wherein the body portion has a flared proximal end for easily receiving the catheter; and a resilient self-sealing substantially straight tip portion connected to the body portion, the tip portion having sufficient rigidity to receive the catheter, wherein the tip portions has a shape retaining memory such that the tip portion is naturally flattened to form a seal; and (b) passing the catheter through the body portion and tip portion of the cannula, such that the resiliency of the tip portion adjusts the shape retaining memory to allow the catheter to pass therethrough into the animal.
Claim 8
Independent Claim
158 words
A method of introducing a catheter or the like into an animal comprising: (a) inserting a cannula into an opening in the animal, said cannula comprising a substantially tubular body portion having sufficient rigidity for placement in the animal, the body portion having a passageway therethrough, the body portion being further made of a material of sufficient rigidity to receive the catheter, wherein the body portion has a flared proximal end for easily receiving the catheter; and a resilient self-sealing substantially straight tip portion connected to the body portion, the tip portion having sufficient rigidity to receive the catheter, wherein the tip portions has a shape retaining memory such that the tip portion is naturally flattened to form a seal; and (b) passing the catheter through the body portion and tip portion of the cannula, such that the resiliency of the tip portion adjusts the shape retaining memory to allow the catheter to pass therethrough into the animal.
Claim 9
Dependent Claim
16 words
The method according to claim 6 wherein the catheter is in sealing engagement with the cannula.
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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) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |