US 10,499,929 B2Granted

Shoulder reamer devices, systems including the same, and related methods

AssigneeRoger C. Sohn

InventorsRoger C. Sohn, Shawn J. Collins

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Abstract

Presently disclosed reamer devices include a longitudinally-extending slot formed through a cutter head portion and a portion of a shaft, thereby allowing engagement of the reamer device with a guide pin inserted into a patient's glenoid by passing the guide pin through the slot and into an interior cannula track extending longitudinally through the interior of the shaft and cutter head portion. Presently disclosed reamer devices may be configured to engage the guide pin when the cutter head portion is positioned at a location medial to the patient's humeral head. Presently disclosed systems include such reamer devices and a guide pin, such as a dual diameter guide pin having an enlarged portion and a smaller portion. Dual diameter guide pins may interact with the interior cannula track of the shaft of the reamer device to serve as a depth limit for advancement of the reamer device along the guide pin.

Claims20

Dependent claims

A reamer device configured to prepare a patient's glenoid for shoulder arthroplasty, comprising:

a shaft extending from a proximal end to a distal end, the shaft comprising:
an inner surface defining an interior cannula track, wherein the shaft is configured to receive a guide pin within the interior cannula track such that the guide pin is substantially parallel with the interior cannula track when received in the interior cannula track, and wherein the shaft is configured to slide longitudinally with respect to the guide pin when the guide pin is positioned within the interior cannula track;
an outer surface opposite the inner surface;
and
a slot formed in the outer surface of the shaft, wherein the slot extends longitudinally along the shaft from the distal end of the shaft towards the proximal end of the shaft, wherein the slot extends radially from the outer surface of the shaft to the interior cannula track;
and wherein the reamer device is configured to receive the guide pin within the interior cannula track by passing the guide pin through the slot;
and
a cutter head portion positioned at the distal end of the shaft, the cutter head portion being configured to cut a patient's glenoid, wherein the interior cannula track and the slot extend through the cutter head portion;
wherein the interior cannula track comprises an enlarged inner diameter portion and a reduced inner diameter portion, wherein the enlarged inner diameter portion has an enlarged inner diameter that is greater than a reduced inner diameter of the reduced inner diameter portion of the interior cannula track, wherein the enlarged inner diameter portion is adjacent the cutter head portion, and wherein the enlarged inner diameter portion extends longitudinally from the distal end of the shaft towards the proximal end of the shaft;
and
wherein the slot extends longitudinally along the shaft from the cutter head portion toward the proximal end of the shaft beyond the enlarged inner diameter portion of the interior cannula track.

8 more elements

A method for performing shoulder surgery, comprising:

inserting a guide pin into a patient's glenoid, wherein the guide pin comprises an enlarged guide pin portion having a first diameter, and a smaller guide pin portion have a second diameter that is smaller than the first diameter, and wherein the inserting the guide pin comprises inserting the enlarged guide pin portion into the patient's glenoid;
engaging the guide pin with a reamer device, wherein the reamer device comprises:
a shaft extending from a proximal end to a distal end, the shaft comprising:
an inner surface defining an interior cannula track, wherein the interior cannula track comprises an enlarged inner diameter portion having an enlarged inner diameter, and a reduced inner diameter portion having a reduced inner diameter that is less than the enlarged inner diameter, wherein the shaft is configured to receive the guide pin within the interior cannula track such that the guide pin is substantially parallel with the interior cannula track when received in the interior cannula track, and wherein the shaft is configured to slide longitudinally with respect to the guide pin when the guide pin is positioned within the interior cannula track;
an outer surface opposite the inner surface;
and
a slot formed in the outer surface of the shaft, wherein the slot extends longitudinally along the shaft from the distal end of the shaft towards the proximal end of the shaft beyond the reduced inner diameter portion of the interior cannula track, wherein the slot extends radially from the outer surface of the shaft to the interior cannula track, and wherein the reamer device is configured to receive the guide pin within the interior cannula track by passing the guide pin through the slot;
and
a cutter head portion positioned at the distal end of the shaft, the cutter head portion being configured to cut a patient's bone, wherein the interior cannula track and the slot extend through the cutter head portion;
wherein the engaging the guide pin with the reamer device comprises moving the shaft with respect to the guide pin such that the guide pin passes radially through the slot formed in the outer surface of the shaft and is received within the interior cannula track of the shaft;
and
capturing the guide pin within the shaft.

9 more elements

A method, comprising:

inserting a guide pin into a patient's glenoid, wherein the guide pin comprises an enlarged guide pin portion having a first diameter, and a smaller guide pin portion having a second diameter that is smaller than the first diameter, and wherein the inserting the guide pin comprises inserting the enlarged guide pin portion into the patient's glenoid;
providing a reamer device, comprising:
a shaft extending from a proximal end to a distal end, the shaft comprising:
an inner surface defining an interior cannula track, wherein the interior cannula track comprises an enlarged inner diameter portion having an enlarged inner diameter, and a reduced inner diameter portion having a reduced inner diameter that is less than the enlarged inner diameter, wherein the shaft is configured to receive the guide pin within the interior cannula track such that the guide pin is substantially parallel with the interior cannula track when received in the interior cannula track, and wherein the shaft is configured to slide longitudinally with respect to the guide pin positioned within the interior cannula track;
an outer surface opposite the inner surface;
and
a slot formed in the outer surface of the shaft, wherein the slot extends longitudinally along the shaft from the distal end of the shaft towards the proximal end of the shaft beyond the reduced inner diameter portion of the interior cannula track wherein the slot extends radially from the outer surface of the shaft to the interior cannula track, and wherein the reamer device is configured to receive the guide pin within the interior cannula track by passing the guide pin through the slot;
and
a cutter head portion positioned at the distal end of the shaft, the cutter head portion being configured to cut a patient's bone, wherein the interior cannula track and the slot extend through the cutter head portion;
placing the cutter head portion of the reamer device in proximity to the guide pin inserted within the patient's glenoid such that the shaft of the reamer device is positioned at a non-parallel angle with respect to the guide pin;
aligning the slot of the reamer device with the guide pin;
moving the cutter head portion towards the guide pin such that a portion of the slot formed in the cutter head portion is moved onto the guide pin;
pivoting the shaft towards the guide pin until the guide pin and the shaft are substantially parallel with one another, and such that the guide pin passes through the slot and is received within the interior cannula track of the reamer device;
and
moving the reamer device toward the patient's glenoid such that the enlarged guide pin portion is received within the enlarged inner diameter portion of the interior cannula track.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/681,114Filed 18 Aug 2017 · continuation
Priority: 7 Nov 2016
Published: US 2018/0125505 A110 May 2018
Granted: 10 Dec 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

A61B 17/1615
Component parts: drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
A61B 17/1684
For particular parts of the body: for the shoulder
A61B 17/1778
Specially adapted for particular parts of the body: for the shoulder
A61B 17/8897
Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices: guide wires or guide pins

Family

Application15/345,337Parent of this continuation · filed 7 Nov 2016
US 2018/0125505 A1Pre-grant publication · published 10 May 2018
US 9,737,313 B1Parent of this continuation
US 10,499,929 B2This patent

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

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