Cannula interface
First Claim
1. A cannula for receiving a detachable medical instrument, the cannula comprising:
- an elongated insertion member having a proximal end with a first surface and a passage for receiving the detachable medical instrument, the passage extending along an axis from the proximal end through a distal end of the insertion member; and
a clamping assembly disposed at the proximal end of the elongated insertion member to engage an engaging portion of the detachable medical instrument, the clamping assembly having a second surface axially spaced from the first surface of the elongated insertion member and a biasing member positioned to bias at least one of the first surface and the second surface axially toward each other along said axis and configured to permit the second surface to move axially along and rotate about said axis of the elongated insertion member to engage the engaging portion of the detachable medical instrument between the first surface and the second surface, wherein the biasing member is positioned between a moveable member and the first surface, such that axial movement of an actuator toward the first surface compresses the biasing member.
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Accused Products
Abstract
A cannula includes a coupling interface adapted to receive and engage a wide variety of medical instruments having engaging portions which are different. In general, the cannula includes an elongated insertion member having a passage for receiving the medical instrument and a clamping assembly disposed at the proximal end of the elongated insertion member to engage the medical instrument. The clamping assembly includes a second surface axially spaced from the first surface of the elongated insertion member, and a biasing member positioned to bias at least one of the first surface and the second surface axially toward each other and to clamp an engaging portion of the medical instrument between the first and second surfaces.
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Citations
17 Claims
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1. A cannula for receiving a detachable medical instrument, the cannula comprising:
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an elongated insertion member having a proximal end with a first surface and a passage for receiving the detachable medical instrument, the passage extending along an axis from the proximal end through a distal end of the insertion member; and
a clamping assembly disposed at the proximal end of the elongated insertion member to engage an engaging portion of the detachable medical instrument, the clamping assembly having a second surface axially spaced from the first surface of the elongated insertion member and a biasing member positioned to bias at least one of the first surface and the second surface axially toward each other along said axis and configured to permit the second surface to move axially along and rotate about said axis of the elongated insertion member to engage the engaging portion of the detachable medical instrument between the first surface and the second surface, wherein the biasing member is positioned between a moveable member and the first surface, such that axial movement of an actuator toward the first surface compresses the biasing member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A cannula for receiving a detachable medical instrument, the cannula comprising:
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an elongated insertion member having a proximal end with a first surface and a passage for receiving the detachable medical instrument, the passage extending along an axis from the proximal end through a distal end of the insertion member;
a clamping assembly disposed at the proximal end of the elongated insertion member to engage an engaging portion of the detachable medical instrument, the clamping assembly having a second surface axially spaced from the first surface of the elongated insertion member and a biasing member positioned to bias at least one of the first surface and the second surface axially toward each other along said axis and configured to permit the second surface to move axially along and rotate about said axis of the elongated insertion member to engage the engaging portion of the detachable medical instrument between the first surface and the second surface; and
a post for mechanically coupling a moveable member to a cover, wherein the elongated insertion member has a guide slot for receiving the post and guiding the clamping assembly between the opened and the closed positions. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification