Trocar sleeve for jet stream condition

• US 7,722,558 B2
• Filed: 02/15/2005
• Issued: 05/25/2010
• Est. Priority Date: 02/15/2005
• Status: Active Grant

• Current Assignee: Lexion Medical LLC
• Original Assignee: Douglas E. Ott
• Inventors: Ott, Douglas E.
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): KOHARSKI, CHRISTOPHER
• Application Number:
  US11/058,435
• Publication Number:
  US 20060184095A1
• Time in Patent Office: 1,925 Days
• Field of Search: 604/23, 604/24, 604/26, 604/27, 604/158, 604/45, 604/164.01, 604/528, 604/164.13, 604/264, 604/267, 604/164.02
• US Class Current: 604/26
• CPC Class Codes: A61B 17/3415 for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters A61B17/3417 takes precedence; body piercing catheter guide needles A61M25/06
• CPC Class Codes: A61B 17/3474 Insufflating needles, e.g. Veress needles
• CPC Class Codes: A61B 17/3496 Protecting sleeves or inner probes; Retractable tips for protecting body piercing guide needles A61M25/0612
• CPC Class Codes: A61M 13/003 Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing
• CPC Class Codes: A61M 2206/20 having means for promoting or enhancing the flow, actively or passively
• CPC Class Codes: A61M 3/00 Medical syringes, e.g. enemata; Irrigators A61M5/00 takes precedence; pistons A61M5/315
• CPC Class Codes: A61M 5/00 Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests vaccination appliances for veterinary use A61D1/025 ; tube connectors, tube couplings, valves or branch units specially adapted for medical use A61M39/00; containers specially adapted for medical or pharmaceutical purposes A61J1/00; combinations of vial and syringe for mixing or transferring their contents A61J1/20; holders for containers for collecting, storing or administering blood or medical fluids A61J1/16

Abstract

A trocar sleeve that isolates the surgical device or movement thereof to inhibit or prevent an established non-jet streaming condition from becoming a jet streaming condition and a method of inhibiting or preventing a jet streaming condition from occurring due to instrument obstruction.

Claims

1. A trocar sleeve for insufflating a body cavity without damaging a tissue in the body cavity that can occur during transient conditions within the trocar sleeve comprising:

a housing;

an inlet port connected to said housing;

a first member connected to said housing, said first member having a sidewall forming a lumen of fixed size therein;

a trocar located in said lumen; and

a second member spaced from and maintained in a fixed condition with respect to said first member, said second member coaxial with said first member along an entire length and circumference of said members to form an open circumferentially continuous annular chamber therebetween, said open chamber free of obstruction, said annular chamber having an open end located distal and coaxial to said housing, said second member having a plurality of apertures therein with the plurality of apertures each having a cross sectional fluid discharge area and each having a fluid stream discharging into a body cavity with the total fluid cross sectional fluid discharge area of said plurality of apertures maintaining a velocity of fluid stream discharging from each of the plurality of apertures in a non jet streaming condition whether or not the trocar is present in the lumen.

2. The trocar sleeve of claim 1, said first and second member comprise a cylindrical tube and said sidewall of said first member is impervious to fluid flow therethrough.

3. The trocar sleeve of claim 1, said plurality of apertures is regularly spaced from one another.

4. The trocar sleeve of claim 1, said plurality of apertures is randomly spaced from one another.

5. The trocar sleeve of claim 1 wherein the second member is spaced radially outward from the first member.