Fast action cartridge syringe holder
First Claim
1. 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.
1 Assignment
0 Petitions
Accused Products
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.
90 Citations
14 Claims
- 1. 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.
- 10. 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.
-
12. 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.
Specification