Handheld instrument assembly

• US 9,962,211 B2
• Filed: 12/03/2015
• Issued: 05/08/2018
• Est. Priority Date: 12/03/2015
• Status: Active Grant

• Current Assignee: Spinal Elements, Inc.
• Original Assignee: Amendia, Inc. (Spinal Elements, Inc.)
• Inventors: Csernatoni, Zsolt
• Primary Examiner(s): Lawson, Matthew
• Assistant Examiner(s): SIPP, AMY R.
• Application Number:
  US14/958,216
• Publication Number:
  US 20170156751A1
• Time in Patent Office: 887 Days
• Field of Search: 81489, 811771, 811772, 8117785, 811775, 30356, 7167, 173 90, 173170, 173 29
• CPC Class Codes: A61B 17/3403 Needle locating or guiding means guides for suture needles A61B17/0482; guiding or tracking by nuclear magnetic resonance G01R33/285
• CPC Class Codes: A61B 17/3472 for bones, e.g. intraosseus injections
• CPC Class Codes: A61B 17/8802 Equipment for handling bone cement or other fluid fillers
• CPC Class Codes: A61B 17/8819 characterised by the introducer proximal part, e.g. cannula handle, or by parts which are inserted inside each other, e.g. stylet and cannula A61B17/8825 takes precedence
• CPC Class Codes: A61B 17/8825 characterised by syringe details A61B17/8822, A61B17/8827 take precedence
• CPC Class Codes: A61B 2017/00455 Orientation indicators, e.g. recess on the handle
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2090/376 using X-rays, e.g. fluoroscopy

Abstract

An improved handheld instrument assembly for penetrating into a patient'"'"'s spine, the instrument assembly has a needle, an outer sleeve, and a removable handle. The needle has a shaft with a bone penetrating tip at a distal end and an enlarged head rotationally fixed to the needle shaft at a proximal end. The outer sleeve is for receiving the needle. The removable handle is configured to removably attach to and engage the handle attachment from the distal side or the proximal side at the discretion of a surgeon. The removable handle has a “T” shaped body. The removable handle has a slotted opening on a frontal side, the slotted opening being sized to pass over the outer sleeve between the distal end and the handle attachment when the needle is inserted into the patient.

Claims

1. An improved handheld instrument assembly for penetrating into a patient'"'"'s spine, the instrument assembly comprises:

a needle having a shaft with a bone penetrating tip at a distal end and an enlarged head rotationally fixed to the needle shaft at a proximal end, wherein the enlarged head has grooves or slots extending parallel to an axis of the needle shaft;

an outer sleeve for receiving the needle, the outer sleeve having a length shorter than the needle so that the needle tip extends past a distal end of the sleeve and a proximal end of the sleeve has a handle attachment having a distal side and a proximal side rotationally fixed to the sleeve and wherein the handle attachment has an upper and a lower square or rectangular body portion, the upper portion being above and the lower portion being below a pair of protrusions, each protrusion having a hole;

a removable handle, the removable handle configured to removably attach to and engage the handle attachment from the distal side or the proximal side at the discretion of a surgeon wherein the removable handle has a “

T”

shaped body, the “

T”

shaped body of the removable handle has a pair of pins aligned to engage the pair of holes on attachment and the square or rectangular body portions fit inside a slotted opening on assembly, wherein the removable handle is configured to be attached from a lower portion of the instrument as the slotted opening allows the outer sleeve to slip into the slotted opening and thereafter the removable handle can be pulled upward into engagement with the handle attachment and the pins align and engage with the holes as the protrusions enter an opening or concavity in the “

T”

shaped body, additionally, the removable handle is further configured to be attached from an upper portion of the instrument by lowering the removable handle from the proximal side of the handle attachment toward the distal side as the pins move into the holes from the proximal end toward the distal end to secure the removable handle to the handle attachment, and wherein the handle attachment of the outer sleeve has a threaded portion at the proximal end, the threaded portion extending above the “

T”

shaped body when assembled wherein the needle enlarged head is configured to fit onto a top of the threaded portion of the handle attachment, and the removable handle is configured to pass over the needle enlarged head when attached from the upper portion of the instrument, and wherein the removable handle has the slotted opening on a frontal side, the slotted opening being sized to pass over the outer sleeve between the distal end and the handle attachment when the needle is inserted into the patient; and

a handle extension, the handle extension having a cap end with an opening configured to fit over the enlarged head of the needle, and an elongated handle for positioning a surgeon'"'"'s hand away from the assembly when inserted in the patient to facilitate imaging the needle and wherein the cap end engages the upper square or upper rectangular body portion at a proximal portion of the handle attachment, wherein when the handle extension is attached to the instrument assembly, the “

T”

shaped body can be removed to further facilitate imaging.