US4744790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast action cartridge syringe holder
Assignee: West Pharmaceutical Services Inc
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Filing: 1986-08-19
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Granted: 1988-05-17
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Expires: 2006-08-19
Abstract
Abstract A holder for cartridges or containers for medicaments in injectable form comprising an elongated housing having a pocket for the cartridge, a head assembly including an elongated plunger rod adapted to be attached to the cartridge plunger for actuating the same to effect discharge of medicament from the cartridge and means operatively connecting the head assembly to one end of the housing for actuating a shank portion of the head assembly axially (longitudinally) in the housing. The head assembly and housing is made of dissimilar materials to facilitate relative rotation of the head assembly and housing and resist slippage when the shank exerts an axial force on the cartridge to seat it in the housing.
Inventors
- 👤 George Jankowski
- 👤 Michael G. Maietta
- 👤 William E. Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:09
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/24; A61M2005/2403; A61M2005/2414; A61M2005/2433; A61M2005/2437; A61M2005/2477; A61M5/31; A61M5/3129; A61M5/3137; A61M2005/3139
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
124 words
A holder for cartridges or containers for medicaments in injectable form comprising an elongated housing having a pocket for the cartridge, a head assembly including an elongated plunger rod adapted to be attached to the cartridge plunger for actuating the same to effect discharge of medicament from the cartridge, means operatively connecting the head assembly to one end of the housing for actuating a shank portion of the head assembly axially in the housing, said head assembly and housing having complementary threads having confronting thread surfaces and each surface having a different coefficient of friction to facilitate relative rotation of the head assembly and housing and resist slippage when the shank exerts an axial force on the cartridge to seat it in the housing.
Claim 2
Dependent Claim
124 words
A holder for cartridges or containers for medicaments in injectable form comprising an elongated housing having a pocket for the cartridge, a head assembly including an elongated plunger rod adapted to be attached to the cartridge plunger for actuating the same to effect discharge of medicament from the cartridge, means operatively connecting the head assembly to one end of the housing for actuating a shank portion of the head assembly axially in the housing, said head assembly and housing having complementary threads having confronting thread surfaces and each surface having a different coefficient of friction to facilitate relative rotation of the head assembly and housing and resist slippage when the shank exerts an axial force on the cartridge to seat it in the housing.
Claim 3
Dependent Claim
41 words
The device of claim 1, wherein said head assembly and said housing are made from different materials whereby the hardness of one material with respect to the other is at least 5 units higher on the Rockwell R Scale hardness test.
Claim 4
Dependent Claim
14 words
The device of claim 2, wherein said housing is made from the harder material.
Claim 5
Dependent Claim
21 words
The device of claim 3, wherein the difference in Rockwell R Scale hardness is from about 10 to about 20 units.
Claim 6
Dependent Claim
34 words
The device of claim 4, wherein said head assembly and said housing are made from different materials whereby the coefficient of friction of one material with respect to the other is at least 0.1.
Claim 7
Dependent Claim
14 words
The device of claim 5, wherein said housing has the lower coefficient of friction.
Claim 8
Dependent Claim
19 words
The device of claim 6, wherein the difference in coefficient of friction is from about 0.2 to about 0.4.
Claim 9
Dependent Claim
26 words
The device of claim 4, wherein said head assembly is made from an ABS resin and the housing is made from a polyphthalate carbonate copolymer resin.
Claim 10
Dependent Claim
26 words
The device of claim 7, wherein said head assembly is made from an ABS resin and the housing is made from a polyphthalate carbonate copolymer resin.
Claim 11
Dependent Claim
131 words
A holder for cartridges or containers for medicaments in injectable form comprising an elongated housing having a pocket for the cartridge, a head assembly including an elongated plunger rod adapted to be attached to the cartridge plunger for actuating the same to effect discharge of medicament from the cartridge, means operatively connecting the head assembly to one end of the housing for actuating a shank portion of the head assembly axially in the housing between a retracted and extended position, said head assembly and housing being made of dissimilar materials to facilitate relative rotation of the head assembly and housing and resist slippage when the shank exerts an axial force on the cartridge to seat it in the housing, and means for detachably locking the plunger rod in a retracted position.
Claim 12
Dependent Claim
131 words
A holder for cartridges or containers for medicaments in injectable form comprising an elongated housing having a pocket for the cartridge, a head assembly including an elongated plunger rod adapted to be attached to the cartridge plunger for actuating the same to effect discharge of medicament from the cartridge, means operatively connecting the head assembly to one end of the housing for actuating a shank portion of the head assembly axially in the housing between a retracted and extended position, said head assembly and housing being made of dissimilar materials to facilitate relative rotation of the head assembly and housing and resist slippage when the shank exerts an axial force on the cartridge to seat it in the housing, and means for detachably locking the plunger rod in a retracted position.
Claim 13
Dependent Claim
37 words
A holder as claimed in claim 10, wherein the bead assembly includes a stop ring and wherein the internal diameter of a bead of the stop ring is smaller than maximum diameter of the push rod tip.
Claim 14
Dependent Claim
165 words
A holder for cartridges or containers for medicaments in injectable form comprising an elongated housing having a pocket for the cartridge, a head assembly including an elongated plunger rod adapted to be attached to the cartridge plunger for actuating the same to effect discharge of medicament from the cartridge, means operatively connecting the head assembly to one end of the housing for actuating a shank portion of the head assembly axially in the housing, said means comprising a series of cam slots and detents on the inner side of the housing engageable in the cam slots, said slots being of a predetermined differing pitch to provide a quick advance during initial actuation from a retracted position and a more gentle slope to provide secure locking action, said head assembly and housing being made of dissimilar materials to facilitate relative rotation of the head assembly and housing and resist slippage when the shank exerts an axial force on the cartridge to seat it in the housing.
Claim 15
Dependent Claim
165 words
A holder for cartridges or containers for medicaments in injectable form comprising an elongated housing having a pocket for the cartridge, a head assembly including an elongated plunger rod adapted to be attached to the cartridge plunger for actuating the same to effect discharge of medicament from the cartridge, means operatively connecting the head assembly to one end of the housing for actuating a shank portion of the head assembly axially in the housing, said means comprising a series of cam slots and detents on the inner side of the housing engageable in the cam slots, said slots being of a predetermined differing pitch to provide a quick advance during initial actuation from a retracted position and a more gentle slope to provide secure locking action, said head assembly and housing being made of dissimilar materials to facilitate relative rotation of the head assembly and housing and resist slippage when the shank exerts an axial force on the cartridge to seat it in the housing.
Claim 16
Dependent Claim
19 words
A holder for cartridges as claimed in claim 10, wherein said housing is made of a clear plastic material.
Claim 17
Dependent Claim
48 words
A holder for cartridges as claimed in claim 10, wherein said head assembly is of a t-shaped cross section including a pair of transversely extending wings for actuating the threaded shank portion to lock a cartridge in place and also for use in discharging contents of the cartridge.
References Cited (Backward Citations)
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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) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |