US6450992B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cannula interface
Assignee: Smith and Nephew Inc
•
Filing: 1999-07-02
•
Granted: 2002-09-17
•
Expires: 2019-07-02
Abstract
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.
Inventors
- 👤 Roger R. Cassidy, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:48
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61B1/00; A61B1/313; A61B2017/00477; A61B2017/347
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
311 words
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.
Claim 2
Dependent Claim
311 words
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.
Claim 3
Dependent Claim
33 words
The cannula of claim 1 further comprising an alignment post extending from the first surface of the elongated insertion member to align the engaging portion of the medical instrument to the clamping assembly.
Claim 4
Dependent Claim
12 words
The cannula of claim 1 wherein the biasing member is a spring.
Claim 5
Dependent Claim
17 words
The cannula of claim 1 wherein the passage of the elongated insertion member includes an O-ring seal.
Claim 6
Dependent Claim
22 words
The cannula of claim 1 further comprising a torsion spring to bias the clamping assembly to remain in a rotatably closed position.
Claim 7
Dependent Claim
197 words
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 actuator includes a moveable member and the biasing member is positioned between the movable member and the elongated member.
Claim 8
Dependent Claim
197 words
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 actuator includes a moveable member and the biasing member is positioned between the movable member and the elongated member.
Claim 9
Dependent Claim
43 words
The cannula of claim 6 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.
Claim 10
Dependent Claim
21 words
The cannula of claim 7 wherein the actuator includes an opening sized to receive the engaging portion of the medical instrument.
Claim 11
Dependent Claim
58 words
The cannula of claim 8 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.
Claim 12
Dependent Claim
21 words
The cannula of claim 6 further comprising a cover and a post for mechanically coupling the moveable member to the cover.
Claim 13
Dependent Claim
30 words
The cannula of claim 10 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.
Claim 14
Dependent Claim
60 words
The cannula of claim 11 wherein the guide slot includes a first section extending axially along the insertion section to a second section which extends circumferentially around the insertion section, the second section extending to a third section extending axially along the insertion section, the post positioned within the first and third sections in the open and closed positions respectively.
Claim 15
Dependent Claim
34 words
The cannula of claim 6 wherein the biasing member is positioned between the moveable member and the first surface, such that axial movement of the actuator toward the second surface compresses the biasing member.
Claim 16
Independent Claim
155 words
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: 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.
Claim 17
Independent Claim
155 words
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: 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.
Claim 18
Dependent Claim
36 words
The method of claim 14 wherein using the clamping assembly further includes,manipulating a user-manipulatable actuator to move at least one of the first and second surfaces of the clamping assembly toward and away from each other.
Claim 19
Dependent Claim
97 words
The method of claim 15 wherein the first surface and second surface are transverse to the axis of the elongated insertion member and the space between the first surface and second surface define a channel for receiving the engaging portion of the medical instrument, the method further comprising: 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.
Claim 20
Dependent Claim
305 words
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: 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.
Claim 21
Dependent Claim
305 words
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: 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.
Claim 22
Dependent Claim
192 words
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: 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.
Claim 23
Dependent Claim
192 words
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: 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.
Claim 24
Dependent Claim
44 words
The clamping assembly of claim 18 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.
Claim 25
Dependent Claim
22 words
The clamping assembly of claim 19 wherein the actuator includes an opening sized to receive the engaging portion of the medical instrument.
Claim 26
Dependent Claim
59 words
The clamping assembly of claim 20 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.
References Cited (Backward Citations)
US4896986A
Cited
US5899888A
Cited
US5176662A
Cited
US5171245A
Cited
US5391152A
Cited
US5456673A
Cited
US5743883A
Cited
US5820614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-09-16 | 2006-03-18 | 2006-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-09-16 | 2010-03-18 | 2010-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-09-16 | 2014-03-18 | 2014-09-17 | $7700.00 | Window Closed / Lapsed |