Atraumatic arthroscopic instrument sheath

• US 8,167,790 B2
• Filed: 11/04/2008
• Issued: 05/01/2012
• Est. Priority Date: 01/29/2004
• Status: Active Grant

• Current Assignee: Psip2 LLC
• Original Assignee: Cannuflow Inc.
• Inventors: Kucklick, Theodore R., Trieb, Martin
• Primary Examiner(s): Leubecker, John P
• Application Number:
  US12/264,727
• Publication Number:
  US 20090062607A1
• Time in Patent Office: 1,274 Days
• Field of Search: 600/114, 604/103.03, 604/174, 604/264
• US Class Current: 600/114
• CPC Class Codes: A61B 1/00094 Suction openings
• CPC Class Codes: A61B 1/00131 Accessories for endoscopes
• CPC Class Codes: A61B 1/00135 Oversleeves mounted on the endoscope prior to insertion
• CPC Class Codes: A61B 1/015 Control of fluid supply or evacuation
• CPC Class Codes: A61B 1/317 for bones or joints, e.g. osteoscopes, arthroscopes
• CPC Class Codes: A61B 17/00234 for minimally invasive surgery A61B17/0218, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 2017/00336 with a protective sleeve, e.g. retractable or slidable
• CPC Class Codes: A61B 2017/3445 used as instrument channel for multiple instruments catheters A61B2017/22072
• CPC Class Codes: A61B 2017/349 Trocar with thread on outside
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61M 1/85 with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208
• CPC Class Codes: A61M 25/0662 Guide tubes
• CPC Class Codes: A61M 39/24 Check- or non-return valves

Abstract

An arthroscopic inflow and outflow sheath providing an improved inflow and outflow system reducing the diameter of a continuous flow system while eliminating the need for a third portal during arthroscopy. The improved arthroscopic inflow and outflow sheath comprises an elongated atraumatic sheath having an inner surface, outer surface, proximal end, and distal end. The atraumatic sheath further comprises plurality of ribs or webs extending from the inner surface of the sheath and designed to contact an outer surface of the arthroscope creating outer lumens facilitating the inflow and outflow of fluid to a surgical site. The atraumatic sheath further comprises a ridge to prevent the sheath from being easily removed from a surgical site.

Claims

1. An atraumatic sheath comprising:

a tube characterized by a distal portion, a proximal portion, an outer surface, an inner surface, an inner diameter and an outer diameter;

wherein the inner diameter of said tube is sized and dimensioned to permit fluid flow between the inner surface of the tube and an outer surface of an arthroscopic instrument when the arthroscopic instrument is disposed within the tube;

a plurality of ribs extending inwardly from the inner surface of the tube and running longitudinally along the tube;

wherein said ribs further define outer lumens between the outer surface of the arthroscopic instrument and the inner surface of the tube;

wherein said ribs further comprise flanges, said flanges forming a seal between the ribs and the outer surface of an arthroscopic instrument when the arthroscopic instrument is disposed within the sheath; and

a ridge disposed on the outer surface of the tube to prevent the sheath from being easily removed from a surgical site.

2. The atraumatic sheath of claim 1 wherein said ridge is helical and shaped as a thread.

3. The atraumatic sheath of claim 1 wherein said ridge is circumferential.

4. The atraumatic sheath of claim 1 further comprising a plurality of circumferential ridges disposed on the outer surface of the tube.

5. The atraumatic sheath of claim 1 wherein the tube of the device comprises a sterilizeable elastomer.

6. A system for performing arthroscopic surgery, said system comprising:

an arthroscopic instrument suitable for performing an arthroscopic surgical procedure;

an atraumatic sheath having an inner diameter sized and dimensioned to permit fluid flow between an inner surface of the sheath and an outer surface of the arthroscopic instrument disposed within the sheath, said sheath further having a plurality of ribs extending inwardly from the inner surface of said sheath and running longitudinally along said sheath;

wherein said ribs define outer lumens between the outer surface of the arthroscopic instrument and the inner surface of the sheath;

wherein said ribs further comprise flanges;

wherein the atraumatic sheath is adapted to be removably disposed over the arthroscopic instrument;

a sleeve having an outer surface and a bore extending therethrough, said bore having an inner diameter so sized and dimensioned as to frictionally fit over an outer diameter of the atraumatic sheath; and

a ridge disposed on the outer surface of the sleeve to prevent the arthroscopic instrument from being easily removed from a surgical site.

7. The system of claim 6 wherein said ridge is helical and shaped as a thread.

8. The system of claim 6 wherein said ridge is circumferential.

9. The system of claim 6 further comprising a plurality of circumferential ridges disposed on the outer surface of the sleeve.

10. The system of claim 6 wherein the sleeve of the device comprises a sterilizeable elastomer.

11. A system for performing arthroscopic surgery, said system comprising:

an arthroscopic instrument suitable for performing an arthroscopic surgical procedure;

an atraumatic sheath having an inner diameter sized and dimensioned to permit fluid flow between an inner surface of the sheath and an outer surface of the arthroscopic instrument disposed within the sheath, said sheath further having a plurality of ribs extending inwardly from the inner surface of said sheath and running longitudinally along said sheath;

wherein said ribs define outer lumens between the outer surface of the arthroscopic instrument and the inner surface of the sheath;

wherein said ribs further comprise flanges;

wherein the atraumatic sheath is adapted to be removably disposed over the arthroscopic instrument; and

a ridge disposed on the outer surface of the atraumatic sheath to prevent the arthroscopic instrument from being easily removed from a surgical site.

12. The system of claim 11 wherein said ridge is helical and shaped as a thread.

13. The system of claim 11 wherein said ridge is circumferential.

14. The system of claim 11 further comprising a plurality of circumferential ridges disposed on the outer surface of the sheath.

15. The system of claim 11 wherein the sheath of the device comprises a sterilizeable elastomer.