Loading unit locking collar
First Claim
1. A loading unit and locking collar assembly, the assembly comprising:
- a shell assembly having a proximally extending annular ring that defines a cylindrical opening, the annular ring defining a lock opening therethrough, the shell assembly defining a first retention slot adjacent the annular ring on an opposite side of the annular ring from the lock opening;
a locking collar positioned about the annular ring, the locking collar having a body, a lock, and a first retention tab, the body including at least one release surface, the lock extending from an inner surface of the body spaced from the at least one release surface, the locking collar having a locked configuration wherein the lock extends through the lock opening into the cylindrical opening and an unlocked configuration wherein the lock is disposed outwardly of the cylindrical opening, the first retention tab being received within the first retention slot to prevent a side of the locking collar opposite the lock from moving outwardly in relation to the annular ring when the at least one release surface is pressed inwardly towards the annular ring.
1 Assignment
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Accused Products
Abstract
A loading unit assembly includes a shell assembly and a locking collar. The shell assembly has a proximally extending annular ring that defines a cylindrical opening. The annular ring defines a lock opening that passes through the annular ring. The shell assembly defines a retention slot that is adjacent the annular ring on an opposite side of the annular ring from the lock opening. The locking collar is positioned about the annular ring and has a body, a lock, and a retention tab. The body includes a release surface. The locking collar has a locked configuration wherein the lock extends into the cylindrical opening and an unlocked configuration wherein the lock is disposed outwardly of the cylindrical opening. The side of the locking collar opposite the lock is prevented from moving outwardly in relation to the annular ring when the release surface is pressed inwardly towards the annular ring.
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Citations
20 Claims
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1. A loading unit and locking collar assembly, the assembly comprising:
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a shell assembly having a proximally extending annular ring that defines a cylindrical opening, the annular ring defining a lock opening therethrough, the shell assembly defining a first retention slot adjacent the annular ring on an opposite side of the annular ring from the lock opening; a locking collar positioned about the annular ring, the locking collar having a body, a lock, and a first retention tab, the body including at least one release surface, the lock extending from an inner surface of the body spaced from the at least one release surface, the locking collar having a locked configuration wherein the lock extends through the lock opening into the cylindrical opening and an unlocked configuration wherein the lock is disposed outwardly of the cylindrical opening, the first retention tab being received within the first retention slot to prevent a side of the locking collar opposite the lock from moving outwardly in relation to the annular ring when the at least one release surface is pressed inwardly towards the annular ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A surgical system comprising:
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a surgical instrument including a distal end defining a lock window; a shell assembly having a proximally extending annular ring that defines a cylindrical opening, the annular ring defining a lock opening therethrough, the shell assembly defining a first retention slot adjacent the annular ring on an opposite side of the annular ring from the lock opening, the distal end of the surgical instrument received within the cylindrical opening with the lock opening radially aligned with the lock window; and a locking collar positioned about the annular ring, the locking collar having a body, a lock, and a first retention tab, the body including the at least one release surface, the lock extending from an inner surface of the body spaced from the at least one release surface, the locking collar having a locked configuration wherein the lock extends through into the lock window to secure the shell assembly to the distal end of the surgical instrument and an unlocked configuration wherein the lock is disengaged from the lock window such that the shell assembly is detachable from the distal end of the surgical instrument, the first retention tab being received within the first retention slot to prevent a side of the locking collar opposite the lock from moving outwardly in relation to the annular ring when the at least one release surface is pressed inwardly towards the annular ring.
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17. A method of using a loading unit, the method comprising:
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aligning a locking collar with a shell assembly; and sliding the loading unit distally over a proximally extending annular ring of the shell assembly, a lock of the locking collar engaging the annular ring such that the lock is moved outwardly towards an unlocked configuration of the locking collar until the lock is aligned with a lock opening defined through the annular ring, resilience of a body of the locking collar urging the locking collar towards a locked configuration of the locking collar to move the lock through the lock opening, a retention tab of the locking collar positioned on an opposite side of the locking collar from the lock sliding into a retention slot defined by the shell assembly to prevent the opposite side of the locking collar from moving outwardly. - View Dependent Claims (18, 19, 20)
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Specification