Cannula interface
First Claim
1. A cannula for receiving a medical instrument, the cannula comprising:
- an elongated insertion member having a proximal end with a first surface and a passage for receiving the 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 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 medical instrument between the first surface and the second surface; and
a user-manipulatable actuator for manipulating the clamping assembly to move at least one of the first and second surfaces toward and away from each other, wherein the first surface and second surface are transverse to the axis of the elongated insertion member, the space between the first surface and second surface defining a channel for receiving the engaging portion of the medical instrument;
wherein the actuator includes an opening sized to receive the engaging portion of the medical instrument;
wherein the actuator is configured to be moved axially away from the elongated insertion section to allow the engaging portion of the medical instrument to be received within the channel and then rotated about an axis of the elongated insertion member to engage the engaging portion within the channel in a closed position; and
wherein the opening is defined by a pair of opposing straight sides and a pair of opposing rounded sides, the opposing straight sides defining the second surface.
1 Assignment
0 Petitions
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.
88 Citations
21 Claims
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1. A cannula for receiving a 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 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 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 medical instrument between the first surface and the second surface; and
a user-manipulatable actuator for manipulating the clamping assembly to move at least one of the first and second surfaces toward and away from each other, wherein the first surface and second surface are transverse to the axis of the elongated insertion member, the space between the first surface and second surface defining a channel for receiving the engaging portion of the medical instrument;
wherein the actuator includes an opening sized to receive the engaging portion of the medical instrument;
wherein the actuator is configured to be moved axially away from the elongated insertion section to allow the engaging portion of the medical instrument to be received within the channel and then rotated about an axis of the elongated insertion member to engage the engaging portion within the channel in a closed position; and
wherein the opening is defined by a pair of opposing straight sides and a pair of opposing rounded sides, the opposing straight sides defining the second surface. - View Dependent Claims (2, 3, 4, 5)
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6. A cannula for receiving a 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 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 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 medical instrument between the first surface and the second surface; and
a user-manipulatable actuator for manipulating the clamping assembly to move at least one of the first and second surfaces toward and away from each other, wherein the actuator includes a moveable member and the biasing member is positioned between the movable member and the elongated member. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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14. A method of attaching a medical instrument to a cannula including an elongated insertion member having a proximal end with a first surface and a passage extending along an axis from the proximal end through a distal end of the insertion member, the method comprising:
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introducing the medical instrument through the passage; and
using a clamping assembly to engage an engaging portion of the medical instrument to the proximal end of the elongated insertion member, 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 medical instrument between the first surface and the second surface.- View Dependent Claims (15, 16)
moving the actuator axially away from the elongated insertion section to allow the engaging portion of the medical instrument to be received within the channel; and
rotating the actuator about an axis of the elongated insertion member to engage the engaging portion within the channel in a closed position.
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17. A clamping assembly for a cannula, the cannula including an elongated insertion member having a proximal end with a first surface and a passage for receiving the medical instrument, the passage extending along an axis from the proximal end through a distal end of the insertion member, the clamping assembly disposed at the proximal end of the elongated insertion member and comprising:
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a member 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 medical instrument between the first surface and the second surface, wherein the member is a user-manipulatable actuator for manipulating the clamping assembly to move at least one of the first and second surfaces toward and away from each other;
wherein the first surface and second surface are transverse to the axis of the elongated insertion member, the space between the first surface and second surface defining a channel for receiving the engaging portion of the medical instrument;
wherein the actuator includes an opening sized to receive the engaging portion of the medical instrument;
wherein the actuator is configured to be moved axially away from the elongated insertion section to allow the engaging portion of the medical instrument to be received within the channel and then rotated about an axis of the elongated insertion member to engage the engaging portion within the channel in a closed position; and
wherein the opening is defined by a pair of opposing straight sides and a pair of opposing rounded sides, the opposing straight sides defining the second surface.
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18. A clamping assembly for a cannula, the cannula including an elongated insertion member having a proximal end with a first surface and a passage for receiving the medical instrument, the passage extending along an axis from the proximal end through a distal end of the insertion member, the clamping assembly disposed at the proximal end of the elongated insertion member and comprising:
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a member 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 medical instrument between the first surface and the second surface, wherein the member is a user-manipulatable actuator for manipulating the clamping assembly to move at least one of the first and second surfaces toward and away from each other; and
wherein the actuator includes a moveable member and the biasing member is positioned between the movable member and the elongated member. - View Dependent Claims (19, 20, 21)
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Specification