US4862573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical sampling needle removal and disposal device
Assignee: Individual
•
Filing: 1988-08-01
•
Granted: 1989-09-05
•
Expires: 2008-08-01
Abstract
Abstract A device for removing and disposing of blood sampling needles with a minimum of manipulation and without manual contact with any contaminated part. An electrical motor operates a cog wheel to unscrew the needle from the vacuum container sleeve to drop into a closed disposal receptacle. The motor is initiated by depression of a starting switch by the sleeve. The cog wheel is recessed for unimpeded insertion of the needle and sleeve for needle removal. A cycle control circuit assures that the wheel stops in the proper position with the recess adjacent the needle insertion site.
Inventors
- 👤 Lance P. Kelson
- 👤 Ross J. Kelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:01
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/3205; A61M2005/3208; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53687
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
124 words
A device for safely removing a medical cannula from a body fluid sampling assembly including the cannula mounted within an externally threaded hub, an external sleeve, and an internally threaded boss carried by the sleeve and engaging the threads of the hub, said removal device comprising: a base plate having an upper side and a lower side; an electrical motor mounted on the base plate and having a rotating output shaft; a wheel mounted to be rotated by the shaft; hub engaging means carried by the wheel; and means mounted upon the base plate for placing the sleeve so that the hub is in position to be engaged, so that it may be rotated and unthreaded from the assembly by operation of the motor.
Claim 2
Independent Claim
124 words
A device for safely removing a medical cannula from a body fluid sampling assembly including the cannula mounted within an externally threaded hub, an external sleeve, and an internally threaded boss carried by the sleeve and engaging the threads of the hub, said removal device comprising: a base plate having an upper side and a lower side; an electrical motor mounted on the base plate and having a rotating output shaft; a wheel mounted to be rotated by the shaft; hub engaging means carried by the wheel; and means mounted upon the base plate for placing the sleeve so that the hub is in position to be engaged, so that it may be rotated and unthreaded from the assembly by operation of the motor.
Claim 3
Dependent Claim
46 words
The device of claim 1, further comprising: a normally open initiation switch controlling the operation of the motor, and positioned to be closed by contact with the external sleeve of the sampling assembly when said assembly is placed into the device for removal of the cannula.
Claim 4
Dependent Claim
37 words
The device of claim 2, further comprising: a wheel axle mounted rotatably upon the base plate and secured to the wheel coaxially therewith; and gear means mounted to act between the motor output shaft and the wheel.
Claim 5
Dependent Claim
62 words
The device of claim 3, wherein: the wheel carries an open ended bore axially therethrough configured to engage the hub to prevent relative rotation between the wheel and the needle hub, and to permit the hub to pass loosely longitudinally therethrough; and the sleeve positioning means is mounted upon the base plate to guide the hub downwardly into the hub engaging bore.
Claim 6
Dependent Claim
15 words
The device of claim 4, wherein: the motor is adapted to operate upon direct current.
Claim 7
Dependent Claim
16 words
The device of claim 6, further comprising: at least one source of direct current electrical power.
Claim 8
Dependent Claim
18 words
The device of claim 6, wherein: the direct current power source is at least one direct current battery.
Claim 9
Dependent Claim
19 words
The device of claim 6, wherein: the direct current power source is an alternating current transformer and rectifier circuit.
Claim 10
Dependent Claim
55 words
The device of claim 6, wherein the direct current power source includes: at least one direct current battery, and an alternating current transformer and rectifier and associated circuitry for operating the motor, along with circuitry causing the motor to operate upon current from the battery only in the absence of a source of alternating current.
Claim 11
Dependent Claim
12 words
The device of claim 9, further comprising: circuitry for recharging the battery.
Claim 12
Dependent Claim
22 words
The device of claim 10, wherein: the battery, the motor operating circuitry and the recharging circuitry are carried by the base plate.
Claim 13
Dependent Claim
18 words
The device of claim 11, wherein: the alternating current transformer and rectifier are carried by the base plate.
Claim 14
Dependent Claim
31 words
The device of claim 2, wherein: the wheel is secured directly to the output shaft of the motor, and the hub engaging means is carried by the periphery of the wheel.
Claim 15
Dependent Claim
39 words
The device of claim 2, further comprising: a wheel axle mounted upon the base plate; gear means mounted to act between the shaft and the wheel; and needle hub engaing means is carried by the periphery of the wheel.
Claim 16
Dependent Claim
60 words
The device of claim 13, wherein the direct current power source includes: at least one direct current battery; an alternating current transformer and rectifier and associated circuitry for operating the motor, along with circuitry causing the motor to operate upon current from the batter only in the absence of a source of alternating current; and circuitry for recharging the battery.
Claim 17
Dependent Claim
22 words
The device of claim 15, wherein: the battery, the motor operating circuitry and the recharging circuitry are carried by the base plate.
Claim 18
Dependent Claim
18 words
The device of claim 16, wherein: the alternating current transformer and rectifier are carried by the base plate.
Claim 19
Dependent Claim
59 words
The device of claim 14, wherein the direct power source includes: at least one direct current battery; an alternating current transformer and rectifier and associated circuitry for operating the motor, along with circuitry causing the motor to operate upon current from the battery only in the absence of a source of alternating current; and circuitry for recharging the battery.
Claim 20
Dependent Claim
22 words
The device of claim 18, wherein: the battery, the motor operating circuitry and the recharging circuitry are carried by the base plate.
Claim 21
Dependent Claim
18 words
The device of claim 19, wherein: the alternating current transformer and rectifier are carried by the base plate.
References Cited (Backward Citations)
US3469750A
Cited
US3851555A
Cited
US4569258A
Cited
US4275628A
Cited
US4255996A
Cited
US4375849A
Cited
US4667821A
Cited
US4738362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |