Surgical stapler having cartridge with adjustable cam mechanism
First Claim
1. A surgical stapling device, comprising:
- a cartridge section defining a longitudinal axis and having a cartridge containing a plurality of fasteners;
an anvil section, the cartridge section and the anvil section configured to clamp tissue therebetween; and
a cam member slidable through the cartridge section in a direction parallel to the longitudinal axis and configured to automatically change its levels in response to a thickness of tissue clamped between the cartridge and anvil sections before it slides through the cartridge section and to maintain a level while sliding through the cartridge section.
3 Assignments
0 Petitions
Accused Products
Abstract
A surgical fastener applying apparatus comprising a cartridge section having a cartridge containing a plurality of fasteners and an anvil section having an anvil for receiving the fasteners when advanced from the cartridge. The cartridge and anvil sections clamp tissue therebetween. A cam member is slidable within the cartridge section to fire the fasteners, and is movable from a first position defining a first distance from the anvil to a second position defining a second different distance from the anvil. A cam adjusting member is operably associated with the cam member and moves the cam member from the first position to the second position in response to a thickness of tissue clamped between the anvil and cartridge sections.
801 Citations
13 Claims
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1. A surgical stapling device, comprising:
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a cartridge section defining a longitudinal axis and having a cartridge containing a plurality of fasteners; an anvil section, the cartridge section and the anvil section configured to clamp tissue therebetween; and a cam member slidable through the cartridge section in a direction parallel to the longitudinal axis and configured to automatically change its levels in response to a thickness of tissue clamped between the cartridge and anvil sections before it slides through the cartridge section and to maintain a level while sliding through the cartridge section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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11. A surgical stapling device, comprising:
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a cartridge section having a cartridge defining a longitudinal axis and containing a plurality of fasteners; an anvil section, the cartridge section and the anvil section configured to clamp tissue therebetween; a cam member slidable within the cartridge section and configured to automatically move transverse to the longitudinal axis of the cartridge among a plurality of levels to form fasteners with a tissue enclosure space corresponding to a thickness of tissue clamped between the cartridge and anvil sections; and a cam adjusting member operably associated with the cam member, the cam adjusting member moving the cam member from a first level to a second level in response to the thickness of tissue clamped between the cartridge section and the anvil section;
the cam adjusting member having an extended planar tissue contacting surface.
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13. A surgical stapling device, comprising:
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a cartridge section having a cartridge defining a longitudinal axis and containing a plurality of fasteners; an anvil section, the cartridge section and the anvil section configured to clamp tissue therebetween; a cam member slidable within the cartridge section and configured to automatically move transverse to the longitudinal axis of the cartridge among a plurality of levels to form fasteners with a tissue enclosure space corresponding to a thickness of tissue clamped between the cartridge and anvil sections; and a cam adjusting member operably associated with the cam member, the cam adjusting member moving the cam member from a first level to a second level in response to the thickness of tissue clamped between the cartridge section and the anvil section, the cam adjusting member engaging a pivotable element in response to the thickness of tissue clamped between the cartridge section and the anvil section, the pivotable element is operatively associated with a pivoting arm that applies a force to the cam member in a direction away from a tissue contacting surface of the cartridge.
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Specification