Patent US5584809A successfully refreshed from Google Patents.
US5584809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety catheter
Assignee: Graphic Controls Corp
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Filing: 1995-06-07
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Granted: 1996-12-17
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Expires: 2015-06-07
Abstract
Abstract A safety catheter has a needle extending from a needle assembly. A needle point lock has a housing, a locking arm with a hook extending outside of the housing and a rear tab. A wheel within the housing is pushed against a ramp surface and the rear tab of the locking arm, by a spring. The needle extends through the housing and a hole or slot in the locking arm, and into the catheter. The hub of the catheter is held against the housing by the hook on the locking arm, until the needle is withdrawn into the housing, releasing the locking arm and allowing the hook to separate from the catheter hub. After the point of the needle has been withdrawn into the housing, it cannot be pushed back out as the needle slot moves out of alignment with the needle point. The needle also cannot be withdrawn from the back of the housing as the tab on the locking arm moves to allow the wheel to engage the needle with a wedging action. The catheter cannot be accessed until the needle point is withdrawn and safely locked within the housing.
Inventors
- 👤 Rodolfo Gaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:10
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0612; A61M25/0618; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61M5/321; A61M5/3243; A61M5/3245; A61M2005/3247; A61M2005/325; A61M5/3273
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
63 words
A safety catheter comprising: a housing; a needle having a point and a needle shaft, with the needle shaft extending entirely through the housing; a catheter having a hub; a catheter retainer on the housing, with the needle shaft extending through an opening in the catheter retainer; and locking means for preventing the point of the needle from being withdrawn from the housing.
Claim 2
Dependent Claim
63 words
A safety catheter comprising: a housing; a needle having a point and a needle shaft, with the needle shaft extending entirely through the housing; a catheter having a hub; a catheter retainer on the housing, with the needle shaft extending through an opening in the catheter retainer; and locking means for preventing the point of the needle from being withdrawn from the housing.
Claim 3
Dependent Claim
24 words
The safety catheter of claim 1 further comprising a needle assembly having a housing cover adapted to fit over the needle point lock housing.
Claim 4
Dependent Claim
20 words
The safety catheter of claim 2 further comprising a flash back chamber on the housing cover, connecting to the needle.
Claim 5
Dependent Claim
25 words
The safety catheter of claim 1 wherein the catheter retainer comprises a locking arm having a hook extending outside of the needle point lock housing.
Claim 6
Dependent Claim
25 words
The safety catheter of claim 1 further comprising flanges on the hub of the catheter, and flange stops on the housing adjacent to the flanges.
Claim 7
Dependent Claim
166 words
A safety catheter comprising: a needle assembly having a needle including a needle shaft and a needle point; a needle point lock having a housing including: a front needle opening and a rear needle opening; a locking arm substantially within the housing, the locking arm having hook projecting outside of the housing, a front leg having a needle slot, and a rear tab; a ramp surface; a locking wheel; and a spring urging the wheel against the ramp surface; and a catheter having a hub with a flange, and with the hook engaging the flange; the needle extending through the rear needle opening, the needle slot, the front needle opening and into the catheter, whereby the locking arm keeps the catheter attached to the housing until the needle is withdrawn into the housing and the needle slot moves out of alignment with needle preventing the needle from advancing forward, and the spring, wheel and ramp surface prevent the needle from being withdrawn rearwardly from the housing.
Claim 8
Dependent Claim
166 words
A safety catheter comprising: a needle assembly having a needle including a needle shaft and a needle point; a needle point lock having a housing including: a front needle opening and a rear needle opening; a locking arm substantially within the housing, the locking arm having hook projecting outside of the housing, a front leg having a needle slot, and a rear tab; a ramp surface; a locking wheel; and a spring urging the wheel against the ramp surface; and a catheter having a hub with a flange, and with the hook engaging the flange; the needle extending through the rear needle opening, the needle slot, the front needle opening and into the catheter, whereby the locking arm keeps the catheter attached to the housing until the needle is withdrawn into the housing and the needle slot moves out of alignment with needle preventing the needle from advancing forward, and the spring, wheel and ramp surface prevent the needle from being withdrawn rearwardly from the housing.
Claim 9
Dependent Claim
20 words
The safety catheter of claim 6 further comprising a flash back chamber and a housing cover on the needle assembly.
Claim 10
Dependent Claim
20 words
The safety catheter of claim 1 wherein the catheter retainer is biased radially away from the hub of the catheter.
Claim 11
Dependent Claim
14 words
The safety catheter of claim 8 wherein the catheter retainer comprises a spring element.
Claim 12
Dependent Claim
35 words
The safety catheter of claim 8 wherein the catheter retainer is held into an engaged position via the needle shaft extending through the catheter retainer, wherein the catheter retainer holds the catheter onto the housing.
Claim 13
Dependent Claim
30 words
The safety catheter of claim 1 wherein the opening in the catheter retainer is a hole or slot having a diameter or width to provide clearance for the needle shaft.
Claim 14
Dependent Claim
54 words
A safety catheter comprising: a housing; a needle extending entirely through the housing and a needle having a point and a shaft; a catheter having a hub; and a locking arm in the housing having a hook extending outside of the housing, with the hook holding the hub of the catheter onto the housing.
Claim 15
Dependent Claim
54 words
A safety catheter comprising: a housing; a needle extending entirely through the housing and a needle having a point and a shaft; a catheter having a hub; and a locking arm in the housing having a hook extending outside of the housing, with the hook holding the hub of the catheter onto the housing.
Claim 16
Dependent Claim
22 words
The safety catheter of claim 12 further comprising an opening in the locking arm, with the needle shaft extending through the opening.
Claim 17
Dependent Claim
20 words
The safety catheter of claim 12 wherein the locking arm is substantially fixed in position with respect to the housing.
Claim 18
Dependent Claim
56 words
The safety catheter of claim 12 wherein the hook is automatically moved radially outwardly away from the hub of the catheter, by a distance sufficient to allow the catheter to be separated from the housing via movement in a direction parallel to the axis of the needle, when the needle point is withdrawn into the housing.
Claim 19
Dependent Claim
73 words
A safety catheter comprising: a housing; a needle having a point and extending entirely through the housing and the catheter; a locking arm on the housing having a hook holding the catheter onto the housing; means for biasing the locking arm away from the catheter; means for holding the locking arm onto the catheter, until the needle point is withdrawn into the housing; and means for locking the needle point with the housing.
Claim 20
Dependent Claim
73 words
A safety catheter comprising: a housing; a needle having a point and extending entirely through the housing and the catheter; a locking arm on the housing having a hook holding the catheter onto the housing; means for biasing the locking arm away from the catheter; means for holding the locking arm onto the catheter, until the needle point is withdrawn into the housing; and means for locking the needle point with the housing.
Claim 21
Dependent Claim
166 words
A safety catheter comprising: a needle assembly having a needle including a needle shaft and a needle point; a housing including a front needle opening and a rear needle opening; a locking arm substantially within the housing, the locking arm having hook projecting outside of the housing, and a front leg having a needle arm opening; a needle lock for preventing the needle point from being pulled out of the rear needle opening once the needle point is within the housing; a catheter having a hub with a flange, and with the hook engaging the flange, the needle extending through the rear needle opening, the needle arm opening, the front needle opening and into the catheter; whereby the locking arm keeps the catheter attached to the housing until the needle is withdrawn into the housing and the needle arm opening moves out of alignment with needle preventing the needle from advancing forward, and the needle lock prevents the needle from being withdrawn rearwardly from the housing.
Claim 22
Dependent Claim
166 words
A safety catheter comprising: a needle assembly having a needle including a needle shaft and a needle point; a housing including a front needle opening and a rear needle opening; a locking arm substantially within the housing, the locking arm having hook projecting outside of the housing, and a front leg having a needle arm opening; a needle lock for preventing the needle point from being pulled out of the rear needle opening once the needle point is within the housing; a catheter having a hub with a flange, and with the hook engaging the flange, the needle extending through the rear needle opening, the needle arm opening, the front needle opening and into the catheter; whereby the locking arm keeps the catheter attached to the housing until the needle is withdrawn into the housing and the needle arm opening moves out of alignment with needle preventing the needle from advancing forward, and the needle lock prevents the needle from being withdrawn rearwardly from the housing.
Claim 23
Dependent Claim
77 words
A safety catheter comprising; a housing; a catheter having a hub; a needle having a point, extending entirely through the housing and the catheter; a spring biased locking arm in the housing; a hook on the locking arm engaged onto the hub of the catheter against the spring bias of the locking arm and holding the hub onto the housing; and a needle lock in the housing for capturing the point of the needle within the housing.
Claim 24
Dependent Claim
77 words
A safety catheter comprising; a housing; a catheter having a hub; a needle having a point, extending entirely through the housing and the catheter; a spring biased locking arm in the housing; a hook on the locking arm engaged onto the hub of the catheter against the spring bias of the locking arm and holding the hub onto the housing; and a needle lock in the housing for capturing the point of the needle within the housing.
Claim 25
Dependent Claim
91 words
A safety catheter comprising: a needle point lock having a housing; a needle assembly including a needle having a point and a needle shaft, with the needle shaft passing through the needle point lock housing; a catheter having a hub; catheter holding means for holding the catheter onto the needle point lock housing, until the needle point is drawn into the housing; a ramp surface within the housing, a lock wheel on the ramp surface, and biasing means for urging the wheel into the ramp surface and towards the needle shaft.
Claim 26
Dependent Claim
91 words
A safety catheter comprising: a needle point lock having a housing; a needle assembly including a needle having a point and a needle shaft, with the needle shaft passing through the needle point lock housing; a catheter having a hub; catheter holding means for holding the catheter onto the needle point lock housing, until the needle point is drawn into the housing; a ramp surface within the housing, a lock wheel on the ramp surface, and biasing means for urging the wheel into the ramp surface and towards the needle shaft.
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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) | 1999-12-17 | 2000-06-17 | 2000-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-12-17 | 2004-06-17 | 2004-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-12-17 | 2008-06-17 | 2008-12-17 | $7700.00 | Window Closed / Lapsed |