DEVICE FOR CREATING A VOID SPACE IN A LIVING TISSUE, THE DEVICE INCLUDING A HANDLE WITH A CONTROL KNOB THAT CAN BE SET REGARDLESS OF THE ORIENTATION OF THE HANDLE

• US 20160228131A1
• Filed: 04/13/2016
• Published: 08/11/2016
• Est. Priority Date: 10/15/2013
• Status: Active Grant

• Current Assignee: Stryker Corporation
• Original Assignee: Stryker Corporation
• Inventors: BROCKMAN, Christopher Scott, VANGEMERT, Geoffrey James
• Granted Patent: US 10,441,295 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/1617 with mobile or detachable parts
• CPC Class Codes: A61B 17/162 Chucks or tool parts which are to be held in a chuck
• CPC Class Codes: A61B 17/1622 Drill handpieces A61B17/1626, A61B17/1628 take precedence
• CPC Class Codes: A61B 17/1626 Control means; Display units
• CPC Class Codes: A61B 17/1631 Special drive shafts, e.g. flexible shafts A61B17/1642, A61B17/164 take precedence
• CPC Class Codes: A61B 17/1642 for producing a curved bore
• CPC Class Codes: A61B 17/1671 for the spine
• CPC Class Codes: A61B 17/1697 specially adapted for wire insertion
• CPC Class Codes: A61B 17/320708 Curettes, e.g. hollow scraping instruments
• CPC Class Codes: A61B 17/3472 for bones, e.g. intraosseus injections
• CPC Class Codes: A61B 2017/00318 Steering mechanisms
• CPC Class Codes: A61B 2017/00389 Button or wheel for performing multiple functions, e.g. rotation of shaft and end effector
• CPC Class Codes: A61B 2017/00424 ergonomic, e.g. fitting in fist
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2090/062 penetration depth

Abstract

A device for creating a void space in living tissue includes a handle from which a shaft extends. A tip is moveably attached to the distal end of the shaft. The angular position of the tip is controlled by the rotation of a knob mounted to the handle. The knob is mounted to the handle to project beyond opposed side surfaces of the handle and a surface that bridge between the side surfaces.

Claims

1. A device for creating a cavity or a channel in bone, the device including:

a handle shaped to be held with a single hand;

said handle has opposed side surfaces and at least one bridge surface that extends between the side surfaces and a notch that extends inwardly from the opposed side surfaces and the bridge surface;

a shaft that extends forward from said handle, the shaft having a distal end;

a tip located forward of the distal end of the shaft, the tip formed of material that when pressed or pushed against bone creates a void or channel in the bone against which the tip is pressed or pushed, wherein said tip is moveably attached to said shaft so that the tip can be moved from a position in which the longitudinal axis of the connector is substantially in registration with the longitudinal axis of the shaft and a position in which the longitudinal axis of the tip is angled relative to the longitudinal axis of the shaft; and

a control assembly for regulating the angular orientation of the tip relative to the longitudinal axis of the shaft, said control assembly including a manually actuated knob that is rotatably mounted to said handle that is used to set the angular orientation of the tip, said knob being mounted to said handle so as be disposed in the notch of said handle so as to rotate in a plane that is static relative to the handle and said handle and said knob are collectively dimensioned so that a continuous arcuate section of the knob extends outwardly from both the opposed side surfaces and the bridge surface of said handle.

2. The device for creating a cavity or a channel in bone of claim 1, wherein:

the handle includes opposed proximally directed and distally directed surfaces, said proximally and distally directed surfaces extending between the side surfaces of the handle; and

said notch is located between the proximally and distally directed surfaces of said handle.

3. The device for creating a cavity or a channel in bone of claim 1, wherein said handle and said knob are collectively dimensioned so that the continuous arcuate section of the knob extends outwardly from both the opposed side surfaces of the handle and the bridge surface of the handle subtends an arc of at least 150°

.

4. The device for creating a cavity or a channel in bone of claim 1, wherein:

said handle is formed to define within said handle a channel that extends between opposed proximal and distal ends of said handle;

said control assembly includes a drive member that is disposed in the handle channel and said handle and said drive head are collectively dimensioned so that the drive member can move proximally to distally through the channel and structural components of said housing prevent the rotational movement of said drive head in the channel; and

said control assembly knob and said drive head are configured to engage so that the rotation of said knob results in the proximal to distal translational movement of said drive member in the handle channel.

5. The device for creating a cavity or a channel in bone of claim 1, wherein:

said shaft is mounted to said handle so as to be selectively extended and retracted;

said control assembly is connected to said shaft and configured to, based on the rotation of the knob, selectively extend and retract the shaft relative to the handle.

6. The device for creating a cavity or a channel in bone of claim 1, wherein:

a flexible elbow is disposed between the shaft and said tip;

said control assembly includes;

at least one cable that extends from said handle through the shaft and that is connected to the elbow or said tip; and

said control assembly includes at least one cable to selectively place a tension on or slacken said at least one cable so that the selective tensioning/slackening of said cable results in the selective flexure of said elbow relative to said shaft.

7. The device for creating a cavity or channel in bone of claim 6, wherein:

said elbow has a shaped that is bent so as to extend outwardly away from the shaft and is formed from shape memory material; and

a single said cable extends from said control assembly to said elbow or said tip wherein the tensioning of said cable results in the flexing of said elbow from the bent state towards a straight state.

8. The device for creating a cavity or channel in bone of claim 6, wherein:

at least two said cables extend from the control mechanism through said shaft to said elbow or said tip; and

the control mechanism is configured to, based on the rotation of the knob selectively tension one of the cables so that the tensioning of the cable results in the flexure of said elbow.

9. The device for creating a cavity or a channel in bone of claim 1, wherein:

the handle includes and top facing;

proximally facing and distal facing surfaces, that bridge between the side surfaces;

the shaft extends from forward from the distal facing surface adjacent the top surface; and

said knob in addition to extending outwardly from the opposed side surfaces, extends outwardly from a portion of the top surface.

10. The device for creating a cavity or a channel in bone of claim 1, wherein:

the handle includes;

a distally facing surface; and

a stem that extends forward from the distally facing surface, said stem dimensioned so that adjacent fingers can be placed around opposed sides of said stem; and

the shaft extends forward from said handle stem.