Surgical tool arrangement

Patent metadata

Field	Value
Publication number	US-9504521-B2
Application number	US-88639306-A
Country	US
Kind code	B2
Filing date	Mar 17, 2006
Priority date	Mar 17, 2005
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A surgical tool arrangement including a powered handpiece which cooperates with a combined electrosurgical and mechanical cutting instrument. The electrosurgical and mechanical cutting instrument includes an outer static housing element which defines an electrode for delivering electrical energy to the surgical site, and a cutting element disposed within the outer housing and movable relative thereto for manipulating patient tissue. The electrosurgical and mechanical cutting instrument is an integral component attachable to the surgical tool to provide multiple functions in a single instrument, such as cauterization, ablation and mechanical cutting, without the need for attachment of additional housing structures or other adapters. The tool arrangement also includes a universal handpiece which is capable of accepting and operating a number of different surgical instruments, each having one or multiple functions.

First claim

What is claimed is:

1. A surgical tool arrangement comprising a handpiece including a housing defining a hollow interior, a proximal end and a distal end spaced therefrom, a motor disposed in said interior and including an output member, a coupling member disposed on said distal end of said housing and including thereon an electrical contact member connected to an electrical power source by an electrical conductor extending through said interior in a proximal direction away from said coupling member, said arrangement further including a surgical instrument for detachable connection to said handpiece, said surgical instrument including a hub configured for interlocking engagement with said coupling member to attach said surgical instrument to said handpiece, a drive element operatively connected to and driven by said output member of said motor, and an electrode arrangement for electrically treating patient tissue, said hub of said surgical instrument mounting thereon an electrical contact member electrically connected to said electrode arrangement, said drive element being supported on said surgical instrument for movement relative to said contact member of said hub when said drive element is driven by said output member, said contact member of said coupling member and said contact member of said surgical instrument being disposed to make electrically-conducting contact with one another when said surgical instrument is attached to said handpiece to provide electrical power to said electrode arrangement.

2. The arrangement of claim 1 , wherein said hub of said surgical instrument is a first hub, said surgical instrument including an outer stationary housing assembly including said first hub which defines thereon a mounting arrangement configured for interlocking engagement with said coupling member of said handpiece, said outer housing assembly including an outer cannula connected to said first hub and defining a window at a distal end thereof, said electrode arrangement being mounted on said outer cannula and defining an electrode disposed adjacent said window for electrically treating patient tissue, said surgical instrument further including a cutting assembly movably disposed within said outer housing assembly and including a second hub configured for being coupled to and driven by said output member of said motor, said cutting assembly including a movable mechanical cutting member including said drive element, said drive element being connected to said second hub and having a cutting head at a distal end thereof, said cutting head being disposed adjacent said window to sever patient tissue.

3. The arrangement of claim 2 , wherein said handpiece defines a suction passage in communication with a suction source, said drive element is tubular and defines a suction conduit therein, said drive element defining an opening disposed adjacent said cutting head in communication with said suction conduit, and said suction conduit communicates with said suction passage of said handpiece so as to permit suction of fluid and/or surgical debris from a surgical site through said opening.

4. The arrangement of claim 1 , wherein said coupling member is tubular and has an outer circumferential surface and an inner circumferential surface, said contact member of said coupling member being disposed adjacent said inner circumferential surface, and said contact member of said surgical instrument being disposed adjacent an outer surface of said hub.

5. The arrangement of claim 1 , wherein said handpiece defines a longitudinal axis, said contact member of said coupling member comprising one of a male connector and a female connector, said connector being oriented generally parallel to, but spaced radially from, the longitudinal axis, and said connector directly contactingly engaging said contact member of said surgical instrument when installed on said handpiece in a direction substantially parallel to the longitudinal axis.

6. The arrangement of claim 1 , wherein said electrode arrangement of said surgical instrument is bipolar and includes an active electrode and a return electrode and said contact member of said surgical instrument is a first contact member, said hub of said surgical instrument mounting thereon a second electrical contact member, said first contact member of said surgical instrument being electrically connected to said active electrode and said second contact member being electrically connected to said return electrode, said contact member of said coupling member of said handpiece is a first contact member and said electrical conductor is a first electrical conductor, said coupling member including a second contact member connected to an electrical power source by a second electrical conductor extending through said interior in a proximal direction away from said coupling member, said first contact member of said coupling member being disposed to mate with said first contact member of said surgical instrument associated with said active electrode and said second contact member of said coupling member being disposed to mate with said second contact member of said surgical instrument associated with said return electrode, and a seal is disposed on either said hub of said surgical instrument or said coupling member of said handpiece to electrically isolate the mating pairs of contact members of said surgical instrument and said coupling member from one another.

7. The arrangement of claim 1 , wherein said contact member of said hub of said surgical instrument is spring-loaded so as to automatically engage with said contact member of said coupling member upon insertion of said hub of said surgical instrument into said coupling member.

8. The arrangement of claim 1 , wherein said coupling member defines a central axis, and said contact members are disposed for engagement with one another in a direction substantially parallel to the central axis upon insertion of said hub of said surgical instrument into said coupling member.

9. The arrangement of claim 1 , wherein said drive element has a longitudinal axis and is operatively coupled to and rotatably driven by said output member of said motor about the axis.

10. The arrangement of claim 9 , wherein said drive element includes a cutting element at a distal end thereof configured for severing patient tissue during rotation of said drive element.

11. The arrangement of claim 1 , wherein said drive element has a longitudinal axis and is operatively coupled to and rotatably driven by said output member of said motor about the axis, said contact member of said coupling member and said contact member of said surgical instrument being disposed to make substantially non-rotatable and electrically-conducting contact with one another during rotation of said drive element.

12. A surgical tool arrangement comprising a handpiece including a housing defining a hollow interior, a proximal end and a distal end spaced therefrom, a motor disposed in said interior, a driving member operatively connected to said motor, and a coupling member disposed on said distal end of said housing and including thereon an electrical contact member connected to an electrical power source by an electrical conductor extending through said interior in a proximal direction away from said coupling member, said arrangement further including a surgical instrument for detachable connection to said handpiece, said surgical instrument including a tissue cutting member operatively connected to said driving member such that actuation of said motor causes movement of said tissue cutting member to sever patient tissue at a surgical site, a hub and an electrode arrangement for electrically treating patient tissue, sa

Assignees

• Deutmeyer Kurt M
• Robison Braden M
• Hamel Andrew J
• Hilldoerfer Michael G
• Stryker Corp

Inventors

• Deutmeyer Kurt M
• Robison Braden M
• Hamel Andrew J
• Hilldoerfer Michael G

Classifications

• A61B18/1485 Primary

  having a short rigid shaft for accessing the inner body through natural openings · CPC title

• A61B17/32002

  with continuously rotating, oscillating or reciprocating cutting instruments · CPC title

• A61B17/32

  Surgical cutting instruments ({A61B18/042 takes precedence; suture cutters A61B17/0467;} implements for ligaturing and cutting {A61B17/122, A61B17/12; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133}) · CPC title

• A61B2017/0046

  with a releasable handle; with handle and operating part separable · CPC title

• A61B2018/00178

  Electrical connectors · CPC title