Apparatus for dispensing low viscosity semi-fluid material under

Details Apparatus for dispensing low viscosity semi-fluid material under Apparatus for dispensing low viscosity semi-fluid material under

1990-05-18

1991-02-19

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 93, 606 94, 222391, 604209, 604 61, A61F 504

Patent

active

049940651

ABSTRACT:
An injection gun especially useful for injecting low volume, high pressure shots of bone cement. The gun includes a cylindrical housing with a plunger including a plunger rod extending axially through the housing. The plunger rod includes a segment which is provided with an axial series of notches. A ratchet block is slidable axially within the cylindrical housing and is concentric with the plunger rod. The ratchet cylinder mounts at least a ratchet pawl urged against the plunger rod and adapted to engage and lock into the series of notches for forward movement. A pistol grip extends from the cylindrical housing, and a lever is pivoted thereto with an extension of the lever engaging the ratchet cylinder for advancing the plunger. A second ratchet pawl is mounted on a fixed member of the cylindrical housing for retaining the plunger against rearward movement when the pawl in the ratchet cylinder is disengaged from the rod.

REFERENCES:
patent: 4338925 (1982-07-01), Miller
patent: 4406654 (1983-09-01), Bristow
patent: 4425121 (1984-01-01), Young et al.
patent: 4472141 (1984-09-01), Dragan
patent: 4546767 (1985-10-01), Smith
patent: 4569662 (1986-02-01), Dragan
patent: 4671263 (1987-06-01), Draenert
patent: 4744494 (1988-05-01), Seager et al.

Affiliated with

Also associated with

Rating

Apparatus for dispensing low viscosity semi-fluid material under does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for dispensing low viscosity semi-fluid material under, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for dispensing low viscosity semi-fluid material under will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1140707