Surgical instrument with replaceable loading unit
First Claim
Patent Images
1. A surgical instrument, comprising:
- an elongated housing having a proximal end and a distal end;
a loading unit removably mountable with the distal end of the elongated housing and having a tool assembly;
a handle assembly at the proximal end of the elongated housing;
a rotation member at the proximal end of the elongated housing; and
a locking structure for securing the loading unit on the elongated housing, the locking structure including a button accessible at the rotation member, the button being movable to facilitate the securement of the loading unit on the elongated housing;
wherein a longitudinal axis extends through the proximal end and the distal end of the elongated housing and wherein the button has a first axial position along the longitudinal axis for locking movement of the loading unit and a second axial position along the longitudinal axis for allowing movement of the loading unit;
wherein the locking structure includes a locking shaft that extends through the elongated housing to the proximal end of the elongated housing;
wherein the locking structure has a plunger that is positioned to engage the button and is arranged to engage the locking shaft to selectively lock the locking shaft in position.
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Accused Products
Abstract
A surgical stapling device has an elongated body and a removable loading unit and a securing structure for securing the loading unit onto the elongated body. A guiding ramp guides the movement of the loading unit as it is mounted onto the loading portion. The locking structure has a first position for locking movement of the loading unit and enabling firing rod to engage the loading unit. The locking unit has a second position for allowing the loading unit to be disengaged and removed from the device.
357 Citations
8 Claims
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1. A surgical instrument, comprising:
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an elongated housing having a proximal end and a distal end; a loading unit removably mountable with the distal end of the elongated housing and having a tool assembly; a handle assembly at the proximal end of the elongated housing; a rotation member at the proximal end of the elongated housing; and a locking structure for securing the loading unit on the elongated housing, the locking structure including a button accessible at the rotation member, the button being movable to facilitate the securement of the loading unit on the elongated housing; wherein a longitudinal axis extends through the proximal end and the distal end of the elongated housing and wherein the button has a first axial position along the longitudinal axis for locking movement of the loading unit and a second axial position along the longitudinal axis for allowing movement of the loading unit; wherein the locking structure includes a locking shaft that extends through the elongated housing to the proximal end of the elongated housing; wherein the locking structure has a plunger that is positioned to engage the button and is arranged to engage the locking shaft to selectively lock the locking shaft in position. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A surgical instrument, comprising:
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an elongated housing having a proximal end and a distal end; a loading unit removably mountable with the distal end of the elongated housing and having a tool assembly; a handle assembly at the proximal end of the elongated housing; a rotation member at the proximal end of the elongated housing; and a locking structure for securing the loading unit on the elongated housing, the locking structure including a button accessible at the rotation member, the button being movable to facilitate the securement of the loading unit on the elongated housing; wherein the button is axially biased in a distal direction by a spring; wherein the button includes a protrusion which engages a slot defined in a locking shaft; wherein proximal movement of the button against the bias of the spring moves the locking shaft proximally to disengage the loading unit from the elongated housing. - View Dependent Claims (8)
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Specification