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US 6,685,710 B2Granted
Rongeur with detachable crossbar
AssigneeCodman & Shurtleff, Inc.
InventorsVictor B. Agbodoe, Gary Richardson, Nelson P. Torres
Life of this patent
Estimating the term…
Abstract
A rongeur has a detachable crossbar to enhance cleaning and sterilization. A pin in a slot on one of the rongeur's handles is moveable out of the slot to permit extended retraction of the crossbar to a position in which it may disengage from the shank of the rongeur.
Claims24
A rongeur comprising:
- an elongated shank having a distal end and a proximal end;
- an elongated crossbar having a distal end and a proximal end adapted to reciprocate axially with respect to the shank;
- the crossbar having a retracted position wherein the crossbar is partially retracted proximally with respect to the shank and a retracted-release position wherein the crossbar is further retracted proximally with respect to the shank than in the retracted position;
- mating surfaces on the shank and crossbar which are aligned to block disengagement of the crossbar from the shank when it is in the retracted positions and which are out of alignment to allow disengagement of the crossbar from the shank when it is in the retracted-release position;
- a first handle fixedly configured to the shank proximal end and a second handle pivotably attached to the shank proximal end about a pivot axis;
- a slot in an upper portion of the second handle and a pin affixed to the crossbar at its proximal end receivable within the slot whereby pivoting of the second handle about the pivot axis induces axial movement of the pin whereby to reciprocate the crossbar, the engagement between the pin and the slot preventing the crossbar from retracting to the retracting-release position;
- the pin being selectively moveable upwardly sufficiently out of the slot to allow further proximal movement of the crossbar with respect to the shank to the refracted-release position whereby to allow the crossbar to be disengaged and removed from the shank for more effective cleaning and sterilization thereof;
- and
- an alignment mark on one of the crossbar and shank to indicate proper alignment of the pin with respect to the slot prior to engaging the pin therein.
6 more elements
A rongeur comprising:
- an elongated shank having a distal end and a proximal end;
- an elongated crossbar having a distal end and a proximal end adapted to reciprocate axially with respect to the shank;
- the crossbar having a retracted position wherein the crossbar is partially retracted proximally with respect to the shank and a retracted-release position wherein the crossbar is further retracted proximally with respect to the shank than in the retracted position;
- mating surfaces on the shank and crossbar which are aligned to block disengagement of the crossbar from the shank when it is in the retracted positions and which are out of alignment to allow disengagement of the crossbar from the shank when it is in the retracted-release position;
- a first handle fixedly configured to the shank proximal end and a second handle pivotably attached to the shank proximal end about a pivot axis;
- a slot in an upper portion of the second handle and a pin affixed to the crossbar at its proximal end receivable within the slot whereby pivoting of the second handle about the pivot axis induces axial movement of the pin whereby to reciprocate the crossbar, the engagement between the pin and the slot preventing the crossbar from retracting to the retracting-release position;
- and
- the pin being selectively moveable upwardly sufficiently out of the slot to allow further proximal movement of the crossbar with respect to the shank to the retracted-release position whereby to allow the crossbar to be disengaged and removed from the shank for more effective cleaning and sterilization thereof;
- wherein the pin is positioned on a holding member on the crossbar, the holding member having a first position in which the pin is sufficiently deeply within the slot to prevent retraction of the crossbar to the retracted-released position and a second position in which the pin is sufficiently out of the slot so as to allow retraction of the crossbar to the retracted-release position;
- and further comprising a detent engagement between the holding member and the crossbar when the holding member is in its first position.
7 more elements
A rongeur according to 13 wherein the mating surfaces comprise an undercut slot on one of the shank and crossbar and a flange on the other of the shank and crossbar received within the slot.
A rongeur comprising:
- an elongated shank having a distal end and a proximal end;
- an elongated crossbar having a distal end and a proximal end adapted to reciprocate axially with respect to the shank;
- the crossbar having a retracted position wherein the crossbar is partially retracted proximally with respect to the shank and a retracted-release position wherein the crossbar is further retracted proximally with respect to the shank than in the retracted position;
- mating surfaces on the shank and crossbar which are aligned to block disengagement of the crossbar from the shank when it is in the retracted positions and which are out of alignment to allow disengagement of the crossbar from the shank when it is in the retracted-release position;
- a first handle fixedly configured to the shank proximal end and a second handle pivotably attached to the shank proximal end about a pivot axis;
- a slot in an upper portion of the second handle and a pin affixed to the crossbar at its proximal end receivable within the slot whereby pivoting of the second handle about the pivot axis induces axial movement of the pin whereby to reciprocate the crossbar, the engagement between the pin and the slot preventing the crossbar from retracting to the retracting-release position;
- the pin being selectively moveable upwardly sufficiently out of the slot to allow further proximal movement of the crossbar with respect to the shank to the retracted-release position whereby to allow the crossbar to be disengaged and removed from the shank for more effective cleaning and sterilization thereof;
- and
- a footplate at the distal end of the elongated shank, the shank having one or more of drainage apertures through the shank adjacent the footplate.
6 more elements
Dependencies are inferred from the claim text.