US3625208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for pressure-administering medicaments
Assignee: Mediquip Corp
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Filing: 1969-05-19
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Granted: 1971-12-07
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Expires: 1989-05-19
Abstract
Abstract Apparatus for pressure administration of a fluent medicament in which a medicament-containing cartridge includes a needlelike outlet bore communicating with a chamber containing the medicament and includes a dispensing piston exposed at the rear end of the cartridge, and the cartridge is removably mounted on the barrel of a dispensing apparatus which includes a handle and actuator, in which the actuator controls a force transmitting assembly having a force transmitting rod directed toward the piston of the medicament cartridge and in which the force transmitting rod is subject to a buildup of axial pressure normally urging the rod toward the dispensing piston during an initial increment of travel and subsequently forcibly engages the piston during a terminal portion of the travel causing the medicament to be forcibly discharged at a skin-penetrating pressure from the needlelike outlet of the cartridge, and means for resetting the apparatus for subsequent use with another cartridge.
Inventors
- 👤 Philip Frost
- 👤 Harry Van Der Gaast
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:14
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
326 words
Apparatus for pressure-administering fluent medicament comprising, in combination: a body member, said body member including handle means angularly extending from one end and barrel means, said barrel means opening away from said handle means; force-transmitting means in said barrel means, said forcetransmitting means including an actuator portion, powerstoring-and-power-release means operatively connected to an operator portion; and means on said barrel means for detachably mounting a medicament cartridge assembly on said barrel means for operating engagement by said operator portion of said force-transmitting means, said force-transmitting means comprising a rod element supported for rectilinear movement in said barrel means, spring means normally urging said rod element toward said handle means, an actuator bracket reciprocably supported on said rod for relative movement with resPect to said rod, at least one leaf spring disposed along the path of movement of said actuator bracket and converging toward said rod and bracket element, said leaf spring including an abutment extending toward said rod and an abutment surface extending generally toward the path of movement of said rod, an abutment-and-camming element on said rod and abuttingly engageable with said leaf spring abutment and including an upwardly converging camming surface extending toward said rod, a power spring interposed between said abutment-and-camming element on said rod and said bracket element whereby initial relative movement of said actuator bracket element with respect to said rod causes said power spring to be compressed and forces said rod toward the abutment element on said leaf spring, and subsequent movement of said actuator bracket element with respect to said rod causes said power spring to be compressed and forces said rod toward the abutment element on said leaf spring, and subsequent movement of said actuator bracket laterally displaces the leaf spring and permits the rod to forcibly move toward the open end of said barrel means, and a return stroke causes said leaf spring to be biased outwardly due to engagement with the camming surface of said rod.
Claim 2
Dependent Claim
326 words
Apparatus for pressure-administering fluent medicament comprising, in combination: a body member, said body member including handle means angularly extending from one end and barrel means, said barrel means opening away from said handle means; force-transmitting means in said barrel means, said forcetransmitting means including an actuator portion, powerstoring-and-power-release means operatively connected to an operator portion; and means on said barrel means for detachably mounting a medicament cartridge assembly on said barrel means for operating engagement by said operator portion of said force-transmitting means, said force-transmitting means comprising a rod element supported for rectilinear movement in said barrel means, spring means normally urging said rod element toward said handle means, an actuator bracket reciprocably supported on said rod for relative movement with resPect to said rod, at least one leaf spring disposed along the path of movement of said actuator bracket and converging toward said rod and bracket element, said leaf spring including an abutment extending toward said rod and an abutment surface extending generally toward the path of movement of said rod, an abutment-and-camming element on said rod and abuttingly engageable with said leaf spring abutment and including an upwardly converging camming surface extending toward said rod, a power spring interposed between said abutment-and-camming element on said rod and said bracket element whereby initial relative movement of said actuator bracket element with respect to said rod causes said power spring to be compressed and forces said rod toward the abutment element on said leaf spring, and subsequent movement of said actuator bracket element with respect to said rod causes said power spring to be compressed and forces said rod toward the abutment element on said leaf spring, and subsequent movement of said actuator bracket laterally displaces the leaf spring and permits the rod to forcibly move toward the open end of said barrel means, and a return stroke causes said leaf spring to be biased outwardly due to engagement with the camming surface of said rod.
Claim 3
Dependent Claim
197 words
Apparatus for pressure-administering fluent medicament comprising, in combination: a body member, said body member including handle means angularly extending from one end and barrel means, said barrel means opening away from said handle means; force-transmitting means in said barrel means, said force transmitting means including an actuator portion, power-storing-and-power-release means operatively connected to an operator portion; means on said barrel means for detachably mounting a medicament cartridge assembly on said barrel means for operating engagement by said operator portion of said force-transmitting means, said force-transmitting means comprising an elongated rod, a cam-and-abutment element on an intermediate portion of said rod, an actuator bracket element connected to said operator portion and reciprocably mounted on said rod, compression spring means interposed between said bracket element and said cam-and-adjustment element whereby movement of said bracket element toward the cam-and-abutment element urges the rod away from said bracket element, laterally displaceable, resiliently supported abutment means interposed in the path of travel of said cam-and-abutment means and displaceable by said bracket element after a previously determined amount of travel and corresponding compression of said compression spring whereby said compression spring forcibly urges said rod toward the open end of the barrel means.
Claim 4
Dependent Claim
197 words
Apparatus for pressure-administering fluent medicament comprising, in combination: a body member, said body member including handle means angularly extending from one end and barrel means, said barrel means opening away from said handle means; force-transmitting means in said barrel means, said force transmitting means including an actuator portion, power-storing-and-power-release means operatively connected to an operator portion; means on said barrel means for detachably mounting a medicament cartridge assembly on said barrel means for operating engagement by said operator portion of said force-transmitting means, said force-transmitting means comprising an elongated rod, a cam-and-abutment element on an intermediate portion of said rod, an actuator bracket element connected to said operator portion and reciprocably mounted on said rod, compression spring means interposed between said bracket element and said cam-and-adjustment element whereby movement of said bracket element toward the cam-and-abutment element urges the rod away from said bracket element, laterally displaceable, resiliently supported abutment means interposed in the path of travel of said cam-and-abutment means and displaceable by said bracket element after a previously determined amount of travel and corresponding compression of said compression spring whereby said compression spring forcibly urges said rod toward the open end of the barrel means.
Claim 5
Dependent Claim
34 words
The structure as claimed in claim 1 in which said cam-and-abutment element includes at least one upwardly converging cam surface for laterally displacing said resiliently supported abutment means for recocking the force transmitting means.
Claim 6
Dependent Claim
53 words
The structure as claimed in claim 1 in which said resilient supported abutment means comprises at least one leaf spring extending longitudinally within said barrel means and secured at one end to an intermediate portion of said barrel means and including a forward end converging toward the path of reciprocation of said rod.
References Cited (Backward Citations)
US2566487A
Cited
US2762369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |