No edit summary
(30 intermediate revisions by 2 users not shown)
Line 1: Line 1:
<!-- Comments that appear only in the edit view are formatted like this. -->
{{777}}
<!-- These comments are offered as an aid as you get started. Remove as you wish. -->
==Alm Retractor==
<!-- next line is the code for inserting an image; delete if you don't have an image yet -->
Project developed by [[User:Robertarden|Robert Arden]]
[[File:Alm_Retractor.jpg|thumb|right|Alm Retractor]]
{{Statusboxtop}}
{{status-design}}
{{status-prototype}}
You can help Appropedia by contributing to the next step in this [[OSAT]]'s [[:Category:Status|status]].
{{boxbottom}}


<center>''You can put an abstract (a brief description of your project) here. ''</center>
==Abstract==
This technology is an OSAT appropriate technology as it will provide a medical tool for others to use that may not have this technology available to them. The parts of this tool are easily printed and the hardware is nowhere near excessive for someone who has a 3D printer. [http://3dprint.com/6652/3d-print-medical-tools/ 3DPrint.com] has an article about using 3D printed surgical tools in low income countries but only include the most simple retractor. As far as I can tell nobody has made a 3D printed Alm retractor before this.
[[Image:Alm_Retractor.jpg|300px|right]]


Some introduction text and background can go here.
== Bill of Materials==
===STL Files===
# 1x [[File:Retractor_Bolt_Handle.stl]]
# 2x [[File:Retractor_Bolt_Retainer.stl]]
# 1x [[File:Retractor_Expander_Mount.stl]]
# 1x [[File:Retractor_Screw_Mount.stl]]
# 2x [[File:Retractor_Arm.stl]]  <-- Need to mirror this part for one arm
# 2x [[File:Retractor_Extending_Arm.stl]]
===SCAD Files===
# [[File:Retractor_Bolt_Handle.scad]]
# [[File:Retractor_Bolt_Retainer.scad]]
# [[File:Retractor_Expander_Mount.scad]]
# [[File:Retractor_Screw_Mount.scad]]
# [[File:Retractor_Arm.scad]]
# [[File:Retractor_Extending_Arm.scad]]
===Additional Hardware===
# 2x [http://www.mcmaster.com/#socket-head-cap-screws  M3x0.5 10mm screw] cost=$0.13
# 2x [http://www.mcmaster.com/#socket-head-cap-screws  M3x0.5 12mm screw] cost=$0.15
# 2x [http://www.mcmaster.com/#socket-head-cap-screws  M3x0.5 16mm screw] cost=$0.16
# 1x [http://www.mcmaster.com/#standard-cap-screws M8x1 50mm bolt] cost=$0.39
# 1x [http://www.mcmaster.com/#hex-nuts M8x1 nut] cost=$0.09


== Understanding the market ==
== Tools needed for fabrication of the OSAT==
# [[Athena Build Overview| MOST Delta RepRap]] or similar RepRap 3-D printer
# 2.5mm Allen Wrench
# Pliers


This is where you can describe what already exists, what is needed, etc.  You may want to include inline references. <ref> You can use the ref code to include inline references.  See [[Help:Footnotes]] for more.</ref>
== Skills and Knowledge Necessary to Make the OSAT ==
* Only standard 3D printing skills are needed for this project


To make bullets use the asterisk:
== Technical Specifications and Assembly Instructions==
* Like this
# Including drawings or pictures of the device at stage of assembly at minimum. (http://www.appropedia.org/Special:Upload)
* and like this
** and two for the next indent
* and back to one...


== Project goals ==
===Printing===
*Print parts at quantities indicated on left - approximate print time is 6 hours at 40 mm/s and 100% fill
** 1x [[File:Retractor_Bolt_Handle.stl]]
*** Print with hex pocket upward, low fill can be used
** 2x [[File:Retractor_Bolt_Retainer.stl]]
*** Print with hole upwards, 100% fill is recommended
** 1x [[File:Retractor_Expander_Mount.stl]]
***Print with large hole pointed upwards, medium fill is recommended
** 1x [[File:Retractor_Screw_Mount.stl]]
*** Print with hex pocket upwards, medium fill is recommended
** 2x [[File:Retractor_Arm.stl]]  <-- Need to mirror this part for one arm
***Print with tissue grips upward, medium fill recommended, 25% support structure is necessary for slot
** 2x [[File:Retractor_Extending_Arm.stl]]
*** Print with holes upward, 100% fill is necessary


Describe project goals here.
===Assembly===
* Approximate assembly time is 30 minutes
* Place small extension arms into large retractor arms
** Use M3x10mm screws to hold into place
* Place other end of extension arms into the expander mount
** Secure arms with the M3x12mm screws
* Push bolt head into hex pocket on handle
* Push hex nut into hex pocket on bolt mount
* Insert bolt through hole in bolt mount and thread into nut until bolt is flush with nut face
** Take one bolt retainer and hold it flush against the nut face
** Rotate the bolt by hand until the bolt is through the retainer and about 15 mm of bolt is protruding
* Attach the retractor arm assembly to the bolt mount
** Use the two M3x16mm screws to secure the arms, make sure the bolt head sits in the pocket
* Push expander mount onto bolt and thread last expander mount onto bolt
** Tighten up the first bolt retainer so that the expander mount cannot twist but the bolt rotates freely
* Verify range of motion is not inhibited
** If range of motion is fine then retractor is ready to use


To make a numbered list use the pound sign:
<gallery caption="Assembly Images">
# Like this
# and like this
# See [[Help:Contents]] for more formatting code.


== Design ==
Image:Arm_to_Extender_Arm.jpg|Retractor Arm to Extender Arm
 
Image:Extender_Mount.jpg|Extender Mount
Describe your design here.
Image:Nut_Pocket.jpg|Pocket for nut
 
Image:Alm_Retractor_Handle.jpg|Handle
<!-- Here is a sample gallery.  -->
<gallery caption="Sample gallery">
File:Imageneeded.png|Sample caption text.
File:Imageneeded.png|More sample caption text. This would look better with different images. :)
File:Imageneeded.png|Even more sample caption text.
</gallery>
</gallery>


=== Next level heading ===
== Cost savings==
 
* Total Cost = $2.32
You may need deeper level headings.  Just keep adding equal signs to get that.
** Hardware cost = $0.92
 
** Plastic Cost- 61 grams at $23/kg = $1.40
== Costs ==
*[http://www.jedmed.com/products/alm-retractor Commercial Equivalent Alm Retractor]
 
** Cost=$191
You may describe your costs here.
* $188.68 savings
{| class="wikitable"
* 98.8% savings
|-
! header 1
! header 2
! header 3
|-
| row 1, cell 1
| row 1, cell 2
| row 1, cell 3
|-
| row 2, cell 1
| row 2, cell 2
| row 2, cell 3
|}
See [[Help:Tables]] and [[Help:Table examples]] for more.
 
== Discussion ==
 
Your discussion.
 
=== Next steps ===
 
The next steps.
 
== Conclusions ==
 
Your conclusions.
 
== References ==
 
<!-- This code is for placing the citation you included above.  If you did not use the <ref> code, please delete this. -->
<references/>
 
== Contact details ==
 
Add your contact information.
 
<!-- Don't change the next line unless you intend to change the categorization -->
<!-- Do add additional, appropriate categories.  See http://www.appropedia.org/Appropedia:CategoryTree for ideas. -->
[[Category:Projects]]

Revision as of 17:07, 18 December 2015

Alm Retractor

Project developed by Robert Arden

Template:Statusboxtop Template:Status-design Template:Status-prototype You can help Appropedia by contributing to the next step in this OSAT's status. Template:Boxbottom

Abstract

This technology is an OSAT appropriate technology as it will provide a medical tool for others to use that may not have this technology available to them. The parts of this tool are easily printed and the hardware is nowhere near excessive for someone who has a 3D printer. 3DPrint.com has an article about using 3D printed surgical tools in low income countries but only include the most simple retractor. As far as I can tell nobody has made a 3D printed Alm retractor before this.

Alm Retractor.jpg

Bill of Materials

STL Files

  1. 1x File:Retractor Bolt Handle.stl
  2. 2x File:Retractor Bolt Retainer.stl
  3. 1x File:Retractor Expander Mount.stl
  4. 1x File:Retractor Screw Mount.stl
  5. 2x File:Retractor Arm.stl <-- Need to mirror this part for one arm
  6. 2x File:Retractor Extending Arm.stl

SCAD Files

  1. File:Retractor Bolt Handle.scad
  2. File:Retractor Bolt Retainer.scad
  3. File:Retractor Expander Mount.scad
  4. File:Retractor Screw Mount.scad
  5. File:Retractor Arm.scad
  6. File:Retractor Extending Arm.scad

Additional Hardware

  1. 2x M3x0.5 10mm screw cost=$0.13
  2. 2x M3x0.5 12mm screw cost=$0.15
  3. 2x M3x0.5 16mm screw cost=$0.16
  4. 1x M8x1 50mm bolt cost=$0.39
  5. 1x M8x1 nut cost=$0.09

Tools needed for fabrication of the OSAT

  1. MOST Delta RepRap or similar RepRap 3-D printer
  2. 2.5mm Allen Wrench
  3. Pliers

Skills and Knowledge Necessary to Make the OSAT

  • Only standard 3D printing skills are needed for this project

Technical Specifications and Assembly Instructions

  1. Including drawings or pictures of the device at stage of assembly at minimum. (http://www.appropedia.org/Special:Upload)

Printing

Assembly

  • Approximate assembly time is 30 minutes
  • Place small extension arms into large retractor arms
    • Use M3x10mm screws to hold into place
  • Place other end of extension arms into the expander mount
    • Secure arms with the M3x12mm screws
  • Push bolt head into hex pocket on handle
  • Push hex nut into hex pocket on bolt mount
  • Insert bolt through hole in bolt mount and thread into nut until bolt is flush with nut face
    • Take one bolt retainer and hold it flush against the nut face
    • Rotate the bolt by hand until the bolt is through the retainer and about 15 mm of bolt is protruding
  • Attach the retractor arm assembly to the bolt mount
    • Use the two M3x16mm screws to secure the arms, make sure the bolt head sits in the pocket
  • Push expander mount onto bolt and thread last expander mount onto bolt
    • Tighten up the first bolt retainer so that the expander mount cannot twist but the bolt rotates freely
  • Verify range of motion is not inhibited
    • If range of motion is fine then retractor is ready to use

Cost savings

Cookies help us deliver our services. By using our services, you agree to our use of cookies.