Limited reuse ablation needles and ablation devices for use therewith

Patent metadata

Field	Value
Publication number	US-9943359-B2
Application number	US-201213460414-A
Country	US
Kind code	B2
Filing date	Apr 30, 2012
Priority date	Apr 30, 2012
Publication date	Apr 17, 2018
Grant date	Apr 17, 2018

Abstract

A surgical instrument includes a reusable component and a limited-use component. The reusable component includes a first electrical contact. The limited-use component is releasably engagable with the reusable component. The limited-use component includes a second electrical contact configured to electrically couple to the first electrical contact to establish electrical communication between the reusable component and the limited-use component. The second electrical contact is movable from a first position, wherein the second electrical contact is positioned to electrically couple to the first electrical contact upon engagement of the limited-use component and the reusable component to one another, to a second position, wherein the second electrical contact is positioned to inhibit electrical coupling to the first electrical contact upon engagement of the limited-use component and the reusable component to one another.

First claim

What is claimed is:

1. A surgical instrument, comprising:
a reusable component including a reusable handle assembly and a first electrical contact; and
a limited-use component releasably engagable with the reusable component, the limited-use component including a limited-use needle electrode assembly configured to mechanically engage the reusable handle assembly and a second electrical contact configured to electrically couple to the first electrical contact to establish electrical communication between the reusable component and the limited-use component, the second electrical contact movable relative to the limited-use needle electrode assembly from a first position, wherein the second electrical contact is disposed at a proximal end portion of the limited-use needle electrode assembly to facilitate direct contact with the first electrical contact upon mechanical engagement of the limited-use needle electrode assembly of the limited-use component and the reusable handle assembly of the reusable component, thereby enabling electrical communication between the reusable component and the limited-use component, to a second position, wherein the second electrical contact is retracted into the limited-use needle electrode assembly to inhibit direct contact with the first electrical contact upon mechanical engagement of the limited-use needle electrode assembly of the limited-use component and the reusable handle assembly of the reusable component, thereby inhibiting electrical communication between the reusable component and the limited-use component.

2. The surgical instrument according to claim 1 , wherein second electrical contact is coupled to a biasing member and is supported via a support member, the support member configured to transition from a first condition, wherein the support member retains the second electrical contact in the first position against the bias of the biasing member, and a second condition, wherein the support member no longer supports the second electrical contact, thereby permitting the second electrical contact to move to the second position under the bias of the biasing member.

3. The surgical instrument according to claim 2 , wherein the support member is transitioned from the first condition to the second condition upon at least one of: application of a fluid thereto, heating to a pre-determined temperature, application of electrical energy thereto, and application of chemicals thereto.

4. The surgical instrument according to claim 2 , wherein the support member is formed from at least one of: a dissolvable material, a phase-change material, and a collapsible scaffold.

5. The surgical instrument according to claim 1 , wherein the second electrical contact is supported by a retention element, the retention element transitionable from a first condition, wherein the retention element retains the second electrical contact in the first position, and a second condition, wherein the retention element effects movement of the second electrical contact to the second position.

6. The surgical instrument according to claim 5 , wherein the retention element is transitioned from the first condition to the second condition upon at least one of: application of a fluid thereto, heating to a pre-determined temperature, application of electrical energy thereto, and application of chemicals thereto.

7. The surgical instrument according to claim 1 , wherein electrical communication between the first and second electrical contacts is configured for at least one of: transmitting electrical energy to the reusable component and identifying the reusable component.

Assignees

• Reid Jr William O
• Covidien Lp

Inventors

• Reid Jr William O

Classifications

• A61B2017/00867

  shape memory effect · CPC title

• A61B2090/0814

  Preventing re-use · CPC title

• A61B2018/00178

  Electrical connectors · CPC title

• A61B18/1477 Primary

  Needle-like probes · CPC title

• A61B2018/1425

  Needle · CPC title