Auto suture device for nasal surgery
This presentation is the property of its rightful owner.
Sponsored Links
1 / 18

Auto-suture device for nasal surgery PowerPoint PPT Presentation


  • 148 Views
  • Uploaded on
  • Presentation posted in: General

Auto-suture device for nasal surgery. Client: Dr. Benjamin Marcus Department of Otolaryngology Advisor: Professor Tyler Mark Yarmarkovich~Leader Joseph Cabelka~Communicator Jennifer Wager~BSAC Therese Rollmann~BWIG. Problem Statement.

Download Presentation

Auto-suture device for nasal surgery

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Auto suture device for nasal surgery

Auto-suture device for nasal surgery

Client: Dr. Benjamin Marcus

Department of Otolaryngology

Advisor: Professor Tyler

Mark Yarmarkovich~Leader

Joseph Cabelka~Communicator

Jennifer Wager~BSAC

Therese Rollmann~BWIG


Problem statement

Problem Statement

  • Develop device to reduce suturing process in nasal surgery (septoplasty)

    • Reduce OR costs ($60/min)

  • The device should mimic the procedure currently used by the surgeon


Design constraints

Design Constraints

  • Reduce suturing time (less than 10 minutes)

  • Autoclavable or one-time use

  • Dimensions must conform to the nose

  • Cost up to $300 for disposable, $1500 for multiple use


Background nose

Background: Nose

  • Septum: cartilage dividing nose into two chambers; 3-5 mm wide

    • Cartilage Young’s Modulus=10MPa

  • Mucous membrane lining each side of septum

  • Nostril width: 10mm-15mm

    • Flexible


Background septoplasty

Background: Septoplasty

  • Deviated septum

    • Septum is severely shifted from midline

    • Causes difficulty breathing, sleeping


Background septoplasty1

Background: Septoplasty

  • Incision made to expose caudal end of septum

  • Cartilage excised to prevent overriding

  • Cartilage swung into alignment


Background suture

Background: Suture

  • Sutures

    • Close incision

    • Strong, non-toxic polymer fiber

    • Absorbable

  • Purse-string suture pattern

    • Continuous

    • Circular

    • Inverting


Current device

Current Device

  • Autosuture devices currently available for bowel surgery

    • Large scale

  • Endostitch

    • Automatic Needle Passer


Materials

Materials

  • Autoclavable or one-time use

  • Light weight and easy to handle

  • Durable if multiple use


Design i mechanical needle passer

Design I: Mechanical Needle Passer

  • Needle passed with pulley system

  • Locked into place by notched edges


Design i mechanical needle passer1

Pros

Mimics procedure

Manipulated by surgeon

Adjustable number of sutures

Cons

Many small parts

Difficult to manufacture

Difficult to autoclave

Requires dexterity

Design I: Mechanical Needle Passer


Design ii clamp

Design II: Clamp

  • Clamped on either side of the septum

  • Suture is manually inserted through raised septum


Design ii

Pros

Easy to manufacture

Can be disposable

Safe

Cons

Not adjustable to size of nose

Not automatic

Design II


Design iii magnetic needle passer

Design III: Magnetic Needle Passer

  • Magnetic field generated by coils secures needle

  • Switch controls magnetic field activation


Design iii magnetic needle passer1

Pros

Simple mechanism

Easy to manipulate

Mimics procedure

Adjustable number of sutures

Cons

Magnetic field must generate sufficient force to hold the needle in place

Size

Design III: Magnetic Needle Passer


Design matrix

Design Matrix


Future work

Future Work

  • Discuss design options with client

  • Build prototype

  • Test device for suture time and ease of use


References

References

  • Autosuture. 29 January 2007<http://www.autosuture.com>.

  • Azom. 6 March 2007<http://www.azom.com/details.asp?ArticleID=1141>.

  • Cornell. 27 February 2007<http://www.mae.cornell.edu/PDF/mcv3/JB.36.1069.pdf>.

  • Fact Sheet. 2 March 2007.<http://www.entnet.org/healthinfo/sinus/deviated-septum.cfm>.

  • Kortenbach, Juergen Andrew . “Automatic needle-passer suturing instrument .” Patent no. 5,814,054. 1998.

  • Lore, John. An Atlas of Head and Neck Surgery. 1988:Philadelphia.

  • Modern Plastics. 6 March 2007<http://www.modernplastics.com/april05/wdtubing.html>.

  • Septoplasty. 27 February 2007<http://emedicine.com/ent/topic128.htm>.

  • Septum. 7 March 2007 <http://z.about.com/d/p/440/e/f/7166.jpg>.


  • Login