Trocar device with detachable handle and associated methods

Patent metadata

Field	Value
Publication number	US-10098647-B2
Application number	US-201715443695-A
Country	US
Kind code	B2
Filing date	Feb 27, 2017
Priority date	Jan 13, 2015
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

The present disclosure provides methods for forming or enlarging holes in bone tissue and methods for fixing medical plates to bodies. The present disclosure also provides for products produced by the methods of the present disclosure and for apparatuses used to perform the methods of the present disclosure including but not limited to spring compressed retained blades and detachable blades.

First claim

What is claimed:

1. A method of aligning a hole carving device having one or more apertures to a body, the method comprising:
positioning a medical plate ( 300 ) adjacent to the body such that at least one of one or more apertures ( 302 ) is oriented towards the body;
inserting a first trocar insertion system into a first one of the apertures ( 302 ) oriented towards the body;
engaging an exterior of a spring housing of the trocar insertion system spring housing ( 106 ) with the first one of the apertures ( 302 ) oriented towards the body;
applying a force to the trocar insertion system relative to the medical plate ( 300 ) to move a driving shaft ( 206 ) with an elongated blade fixture ( 112 ) thereon through the first one of the apertures ( 302 ) and towards the body;
removably inserting a proximal end ( 114 ) of the elongated blade fixture ( 112 ) to the body, leaving the proximal end of the elongated blade fixture ( 112 ) removably fixed to the body; detaching the driving shaft ( 206 ) from the elongated blade fixture ( 112 ) by disengaging one or more mating features; and,
leaving the proximal end of the elongated blade fixture ( 112 ) removably fixed to the body.

2. The method of claim 1 , the method further comprising engaging and disengaging the driving shaft ( 206 ) from the elongated blade fixture ( 112 ) via a first mating feature and a second mating feature.

3. The method of claim 2 , wherein the second mating feature comprises a protruding part from the trocar insertion system and the first mating feature comprises a depression in the driving shaft adapted to receive the protruding part in a snap joint configuration.

4. The method of claim 1 , wherein the medical plate ( 300 ) is adjacent to the body such that a second aperture of the one or more apertures ( 302 ) is oriented towards the body; and, wherein the one or more mating features are a first mating feature on an end of the driving shaft ( 206 ) with a second mating feature on the first trocar insertion system ( 100 ).

5. A method of forming a pilot hole in bone tissue, the method comprising:
positioning a medical plate ( 300 ) having one or more apertures ( 302 ) adjacent to the bone tissue such that at least one of the one or more apertures ( 302 ) is oriented towards the bone tissue;
inserting a trocar insertion system into one of the apertures ( 302 ) oriented towards a body, wherein the trocar insertion system comprises
a driving shaft ( 206 );
a first mating feature on a proximal end ( 220 ) of the driving shaft ( 206 );
an elongated blade fixture ( 112 ) having proximal and distal ends with a second mating feature on the distal end;
a spring retention feature ( 119 ) located on the elongated blade fixture ( 112 ) between the proximal and distal ends;
a trocar compression spring ( 108 ) slidably fitted around the elongated blade fixture ( 112 ) between the proximal end and the spring retention feature ( 119 );
a spring housing ( 106 ) comprising a hollow body with proximal and distal ends;
wherein the first mating feature and second mating feature are detachably engaged such that the driving shaft ( 206 ) and the elongated blade fixture ( 112 ) are detachably connected in coaxial alignment;
wherein the trocar compression spring ( 108 ) is configured to be compressed between the spring retention feature ( 119 ) and a spring catching feature ( 107 ) located at the proximal end of the spring housing ( 106 ) and,
at least a portion of the elongated blade fixture ( 112 ) is slidably disposed within the spring housing ( 106 ) with central longitudinal axes of the elongated blade fixture ( 112 ) and the spring housing ( 106 ) being coaxially aligned,
engaging an exterior of the trocar insertion system spring housing ( 106 ) with the one of the apertures ( 302 ) oriented towards the body;
applying a force to the shaft relative to the medical plate ( 300 ) to move the proximal end of the elongated blade fixture ( 112 ) through the one of the apertures ( 302 ) oriented towards the body; and,
forming the pilot hole in the bone tissue with the proximal end of the elongated blade fixture ( 112 ).

6. The method of claim 5 , wherein the second mating feature comprises a protruding part from the trocar insertion system and the first mating feature comprises a depression in the driving shaft adapted to receive the protruding part in a snap joint configuration.

Assignees

• Eca Medical Instr

Inventors

• Nino John
• Ivinson David

Classifications

• A61B17/1728 Primary

  for holes for bone plates or plate screws · CPC title

• A61B17/3496

  Protecting sleeves or inner probes; Retractable tips (for protecting body piercing guide needles A61M25/0612) · CPC title

• A61B2017/00473

  Distal part, e.g. tip or head (A61B2017/00464 takes precedence) · CPC title

• B25D5/00

  Centre punches · CPC title

• B26F1/34

  power actuated (details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F5/00) · CPC title