US 9,308,003 B2Granted

Telescopic guide for hip replacement method

AssigneeCrescent H Trust

InventorBrad L. Penenberg

Life of this patent

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Abstract

A tool and method for locating a proper position for a portal incision for hip arthroplasty, the tool having at least one generally straight body defining an axis, the generally straight body having a slot at one end, the slot being angled at an approximately 45 degree angle relative to the axis of the generally straight body, the slot configured to receive a cutting member or guide tool. A second generally straight body may be connected to the first generally straight body to form a right angle. If the lengths of the two generally straight bodies are substantially equivalent, then when the second generally straight body is inserted into the acetabulum, the first generally straight body positions the slot in the proper location such that sliding a guide tool or cutting member through the slot allows a portal incision to be created in the proper location. In some embodiments, the generally straight bodies may have adjustable lengths.

Claims6

Dependent claims

A method for creating a portal incision during total hip arthroplasty, comprising:

a. creating a main incision on a hip lateral to an acetabulum;
b. inserting a measuring tool into the main incision and abutting the measuring tool against the acetabulum so as to define a first axis of measurement with the measuring tool, wherein the measuring tool, comprises:
i. a generally straight body having a first end and a second end opposite the first end defining a length,
ii. a plurality of markings evenly spaced apart on the first body along the length of the body;
iii. a slot positioned at the second end of the body, the slot defining a slot axis forming an approximately 45 degree angle with the length of the body to identify a path directed towards the acetabulum;
c. taking a first measurement of a first distance from the acetabulum to a first location outside the hip along the first axis of measurement;
d. removing the measuring tool from the main incision;
e. positioning the measuring tool within a coronal plane approximately perpendicular to the first axis of measurement at the first location so that the slot is positioned at a second location a second distance away from the first location, wherein the second distance and the first distance are equivalent in measure to locate the optimal position for the portal incision;
and
f. creating the portal incision by sliding a guide tool through the slot towards the hip.

7 more elements

A method for creating a portal incision for total hip arthroplasty with a measuring tool in a patient in need thereof, the measuring tool, comprising a first generally straight body having a first end and a second end opposite the first end defining a first length, the first generally straight body, comprising a slot positioned at the second end of the first body, the slot defining a slot axis forming an approximately 45 degree angle with the length of the first body;

a second generally straight body having a first end and a second end opposite the first end, the second body having a second length, wherein the second end of the second body is connected to the first end of the first body so that the first and second bodies form a generally right angle, the method comprising:
a. creating a main incision on a hip lateral to an acetabulum;
b. inserting the second body of the measuring tool into the main incision and abutting the first end of the second body against the acetabulum so as to define a first axis of measurement with the second body and a second axis of measurement with the first body that is outside and generally parallel to the hip, wherein the first axis of measurement is generally perpendicular to the second axis of measurement;
and
c. creating the portal incision by sliding a cutting member through the slot towards the hip.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/623,073Filed 19 Sep 2012 · continuation in part
Priority: 29 Aug 2011
Published: US 2013/0053856 A128 Feb 2013
Granted: 12 Apr 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification29 codes

A61F 2/4657
Special tools for implanting artificial joints: measuring instruments used for implanting artificial joints
A61B 17/00234
Surgical instruments, devices or methods: for minimally invasive surgery
A61B 17/164
Instruments for performing osteoclasis; Drills or chisels for bones; Trepans: intramedullary
A61B 17/1659
Instruments for performing osteoclasis; Drills or chisels for bones; Trepans: surgical rasps, files, planes, or scrapers

Family

Application61/528,744Us provisional application · filed 29 Aug 2011
Application61/567,869Us provisional application · filed 7 Dec 2011
Application13/431,944Parent of this continuation-in-part · filed 27 Mar 2012
Application13/440,962Parent of this continuation-in-part · filed 5 Apr 2012
US 2013/0053859 A1Pre-grant publication · published 28 Feb 2013
US 2013/0053856 A1Published application
US 2013/0053857 A1Published application
US 9,439,675 B2Related patent
US 9,610,092 B2Related patent
US 9,308,003 B2This patent

From the US filing history. Foreign family members aren’t listed.