Patent US5366441A successfully refreshed from Google Patents.
US5366441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter introducer assembly with guidewire
Assignee: Becton Dickinson and Co
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Filing: 1993-09-28
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Granted: 1994-11-22
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Expires: 2013-09-28
Abstract
Abstract A catheter introducer assembly is disclosed. The catheter introducer assembly is made UP of a housing having a needle attached to it. A guidewire is slidably located within the lumen of the needle. A catheter assembly is mounted over the needle. Within the housing is a plunger and secured to the plunger is a retainer for releasably retaining the guidewire within the needle lumen. Axial movement of the plunger causes axial movement of the guidewire. The retainer releasably retains the guidewire. Also disclosed is a method of introducing a catheter into a blood vessel. The method involves the steps of piercing the blood vessel with a sharp needle having a catheter mounted axially on it; sliding a guidewire through the lumen of the needle so that the guidewire protrudes from the distal end of the needle and into the vessel; sliding the catheter over the guidewire and into the vessel; withdrawing the needle from the catheter; and retaining the guidewire within the catheter after withdrawal of the needle.
Inventors
- 👤 Mark A. Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:29
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0606; A61M2025/0098
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
158 words
A catheter introducer set comprising: a hollow housing having an axial lumen, a proximal end and a distal end; a needle hub at the distal end of the housing; a needle having an axial lumen, a proximal end and a distal end, the proximal end being secured to the needle hub; a guidewire slidably located axially within the lumen of the needle; a catheter assembly slidably located axially over the needle, the catheter assembly including a catheter adapter; a plunger slidably located axially within the lumen of the housing, the plunger having a proximal end and a distal end; and retaining means for releasably retaining the guidewire within the needle lumen such that axial movement of the plunger causes axial movement of the guidewire, the retaining means being adapted to be moveable between a first position in which the guidewire is secured to the plunger and a second position in which the guidewire is released from the plunger.
Claim 2
Dependent Claim
158 words
A catheter introducer set comprising: a hollow housing having an axial lumen, a proximal end and a distal end; a needle hub at the distal end of the housing; a needle having an axial lumen, a proximal end and a distal end, the proximal end being secured to the needle hub; a guidewire slidably located axially within the lumen of the needle; a catheter assembly slidably located axially over the needle, the catheter assembly including a catheter adapter; a plunger slidably located axially within the lumen of the housing, the plunger having a proximal end and a distal end; and retaining means for releasably retaining the guidewire within the needle lumen such that axial movement of the plunger causes axial movement of the guidewire, the retaining means being adapted to be moveable between a first position in which the guidewire is secured to the plunger and a second position in which the guidewire is released from the plunger.
Claim 3
Dependent Claim
20 words
The catheter introducer set of claim 1 wherein the retaining means is mounted at the distal end of the plunger.
Claim 4
Dependent Claim
31 words
The catheter introducer set of claim 1 further comprising means in the housing for engaging the retaining means thereby moving the retaining means from the first position into the second position.
Claim 5
Dependent Claim
31 words
The catheter introducer set of claim 2 wherein the retaining means comprise an annular member which is radially compressed by the guidewire when the retaining means is in the first position.
Claim 6
Dependent Claim
41 words
The catheter introducer set of claim 4 further comprising means for engaging the retaining means to move the retaining means into the second position such that in the released position the retaining means is no longer radially compressed by the guidewire.
Claim 7
Dependent Claim
18 words
The catheter introducer set of claim 1 further comprising a seal between the catheter adapter and the guidewire.
Claim 8
Dependent Claim
17 words
The catheter introducer set of claim 1 further comprising a seal between the plunger and the housing.
Claim 9
Dependent Claim
144 words
A catheter introducer set for introducing a catheter into a blood vessel, the catheter introducer set comprising: a housing defining a housing lumen; a needle hub on the housing; a needle having a proximal end attached to the needle hub, a distal end and a lumen; a catheter assembly having a cannula and an adapter and said catheter assembly mounted axially on the needle; a guidewire slidably located axially in the needle lumen; means disposed inside the housing lumen for retaining the guidewire within the needle lumen by applying a releasable radial force to the guidewire while the needle is being inserted into the vessel; and means for releasing the guidewire from the means for retaining once the needle has been inserted into the blood vessel such that while the needle is being removed from the cannula, the guidewire remains in the catheter assembly.
Claim 10
Dependent Claim
144 words
A catheter introducer set for introducing a catheter into a blood vessel, the catheter introducer set comprising: a housing defining a housing lumen; a needle hub on the housing; a needle having a proximal end attached to the needle hub, a distal end and a lumen; a catheter assembly having a cannula and an adapter and said catheter assembly mounted axially on the needle; a guidewire slidably located axially in the needle lumen; means disposed inside the housing lumen for retaining the guidewire within the needle lumen by applying a releasable radial force to the guidewire while the needle is being inserted into the vessel; and means for releasing the guidewire from the means for retaining once the needle has been inserted into the blood vessel such that while the needle is being removed from the cannula, the guidewire remains in the catheter assembly.
Claim 11
Dependent Claim
18 words
The catheter introducer set of claim 8 further comprising a seal between the catheter adapter and the guidewire.
Claim 12
Dependent Claim
40 words
The catheter introducer set of claim 8 wherein the means for releasing is secured to the housing, the means for releasing being adapted to release the guidewire from the means for retaining on introduction of the guidewire into the vessel.
Claim 13
Dependent Claim
51 words
The catheter introducer set of claim 8 further comprising a plunger slidable in the housing and the means for retaining being secured to the plunger such that the guidewire is slidable with the plunger and the guidewire can be introduced into the vessel by sliding the plunger in a distal direction.
Claim 14
Dependent Claim
17 words
The catheter introducer set of claim 11 further comprising a seal between the plunger and the housing.
Claim 15
Dependent Claim
17 words
The catheter introducer set of claim 8 wherein the means for releasing is secured to the housing.
Claim 16
Independent Claim
105 words
A method of introducing a catheter into a blood vessel comprising the steps of: piercing the blood vessel with a sharp needle, the needle having a proximal end, a distal end and an axial lumen, the needle further having a catheter mounted axially on the needle and being mounted to a needle hub; sliding a guidewire through the lumen of the needle so that the guidewire protrudes from the distal end of the needle and into the vessel; sliding the catheter over the guidewire and into the vessel; withdrawing the needle from the catheter; and retaining the guidewire within the catheter while withdrawing the needle.
Claim 17
Independent Claim
105 words
A method of introducing a catheter into a blood vessel comprising the steps of: piercing the blood vessel with a sharp needle, the needle having a proximal end, a distal end and an axial lumen, the needle further having a catheter mounted axially on the needle and being mounted to a needle hub; sliding a guidewire through the lumen of the needle so that the guidewire protrudes from the distal end of the needle and into the vessel; sliding the catheter over the guidewire and into the vessel; withdrawing the needle from the catheter; and retaining the guidewire within the catheter while withdrawing the needle.
Claim 18
Dependent Claim
25 words
The method of claim 14 further comprising the step of retaining the guidewire slidably within the needle during the step of piercing the blood vessel.
Claim 19
Dependent Claim
18 words
The method of claim 15 further comprising the step of releasing the guidewire on withdrawal of the needle.
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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) | 1997-11-21 | 1998-05-23 | 1998-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-21 | 2002-05-23 | 2002-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-21 | 2006-05-23 | 2006-11-22 | $7700.00 | Window Closed / Lapsed |