Device for injection of fluidic materials into body tissue

Details Device for injection of fluidic materials into body tissue Device for injection of fluidic materials into body tissue

1993-11-12

1994-12-06

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604218, A61M 500

Patent

active

053706307

ABSTRACT:
A device (10) for injection of fluidic materials into body tissue includes a syringe (22) and an injection housing (24). The syringe (24) includes a first end (26), a second end (28) , a hollow barrel (30) , a plunger (32) , and a rod (34) which extends through the second end (28) of the syringe (24). The housing (24) further includes a first end (42), a second end (44), and a bore (46). The first end (42) of the housing is disposed in juxtaposed relationship with the second end (28) of the syringe ( 22 ) . The rod ( 34 ) extends beyond the second end (44) of the housing (24). A piston (72) travels within the bore ( 46 ) in a reciprocal fashion, and cooperates with the rod ( 34 ) in a ratchet-like fashion. The piston (72) engages the rod (34) as the piston (72) travels toward the first end (42) of the housing (24), and disengages from the rod (34) as the piston (72) travels toward the second end (44) of the housing (24). The plunger (32) of the syringe (24) is thereby advanced in increments, each of which is translatable to a specific volume of fluidic material.

REFERENCES:
patent: 4659327 (1987-04-01), Bennett et al.
patent: 4865591 (1989-09-01), Sams
patent: 5017190 (1991-05-01), Simon et al.

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