Perforated trocar sleeve and method of use

• US 6,733,479 B1
• Filed: 07/28/2000
• Issued: 05/11/2004
• Est. Priority Date: 07/30/1999
• Status: Expired due to Term

• Current Assignee: Douglas E. Ott
• Original Assignee: Douglas E. Ott
• Inventors: Ott, Douglas E.
• Primary Examiner(s): Denion, Thomas
• Assistant Examiner(s): CORRIGAN, JAIME W
• Application Number:
  US09/627,971
• Time in Patent Office: 1,383 Days
• Field of Search: 604/158, 604/160, 604/164.02, 604/164.03, 604/164.09, 604/164.1, 604/166.01, 604/170.02, 604/264
• US Class Current: 604/264
• CPC Class Codes: A61B 17/3421 Cannulas
• CPC Class Codes: A61B 17/3474 Insufflating needles, e.g. Veress needles
• CPC Class Codes: A61M 13/003 Blowing gases other than for carrying powders, e.g. for inflating, dilating or rinsing

Abstract

A perforated trocar sleeve (20) is disclosed. The trocar sleeve has an elongate tubular body member (21) having a proximal end (22) and a spaced distal end (24). An inlet port (25) is defined in the proximal end of the body member, and an outlet port (26) is defined at the distal end thereof. The inlet and outlet ports, in association with the body member, define a continuous fluid flow conduit (28) within the body member. A plurality of openings (29) are defined in the exterior surface of the tubular body member and extend from the distal end of the body member at least partially toward the proximal end thereof. The fluid to be delivered into a body cavity is passed through these openings and dispersed through an arc extending radially about the axis of the body member. The openings may be spaced randomly or regularly along the length of the body member, and may be positioned within at least one recess (40,60) defined within the exterior surface of the body member. The openings defined in the body member may vary in size along the length of the body member.

Claims

1. A method of delivering a pressurized fluid stream carrying-one or more agents under pressure into a body, said method comprising the steps of:

a) inserting a distal end of an elongate trocar sleeve into the body, the trocar sleeve having a proximal end spaced from its distal end;

b) passing the fluid to be delivered into the proximal end of the trocar sleeve and flowing the fluid through an open chamber in the trocar sleeve, the open chamber being partially obstructed when housing an instrument therein to produce a partially obstructed cross sectional fluid flow area through the open chamber; and

c) discharging the fluid from the trocar sleeve into the body at a velocity below a jet streaming velocity.

4. The device of claim 1, said plurality of spaced openings being regularly spaced from one another.

5. The device of claim 1, said body member being formed as an elongate rigid tubular body member about said longitudinal axis.

6. The device of claim 1, further comprising a spaced plurality of dimples defined in the exterior surface of the body member and extending from the distal end of the body member, at least partially toward the proximal end thereof, said plurality of spacea openings being defined within said dimples.

9. The device of claim 1, said pre-determined radial arc comprising an arc of approximately three hundred-sixty degrees.

10. The device of claim 1, each opening of said plurality of openings is sized in the range of from approximately 0.01 millimeters to approximately 5 millimeters.

12. The device of claim 1, said plurality of openings being spaced from the proximal end of the body member.

13. The device of claim 1, wherein the openings of said plurality of openings are formed as elongate openings in the body member.

14. The device of claim 13, wherein the openings of said plurality of openings are formed to be parallel to the axis of the body member.

15. The device of claim 13, wherein the openings of said plurality of openings are formed to be perpendicular to the axis of the body member.

16. The device of claim 13, wherein the openings of said plurality of openings are formed parallel to one another and at an angle with respect to the axis of the body member.

2. A device for insertion into a body for use in delivering a pressurized fluid stream carrying one or more agents under pressure into the body, said device comprising:

an elongate tubular body member formed about a longitudinal axis;

said body member having a proximal end and a spaced distal end;

an inlet port defined at the proximal end of the body member;

an outlet port defined at the distal end of the body member;

the inlet port and the outlet port defining in cooperation with the body member a conduit having an open fluid chamber extending substantially the length of the body member, said open fluid chamber at times partially obstructed by an instrument to produce an obstructed cross sectional fluid flow area through the open fluid chamber and thereby increase a velocity of a fluid stream flowing therein to a jet streaming condition; and

a plurality of spaced openings defined in the body member and opening into at least a portion of the obstructed cross sectional fluid flow area in said conduit, said plurality of openings 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 openings larger than the obstructed cross sectional fluid flow area to thereby maintain a velocity of the fluid stream discharging from each of the plurality of openings in a non jet streaming condition.

3. The device of claim 2, said plurality of spaced openings being randomly spaced from one another.

7. The device of claim 2, further comprising a continuous helical groove defined within the exterior surface of the body member land extending from the distal end of the body member at least partially toward the proximal end thereof, said plurality of spaced openings being defined within said helical groove.

8. The device of claim 2, said pre-determined radial arc comprising an arc of approximately one hundred-eighty degrees.

11. The device of claim 2 wherein the openings of said plurality of openings vary in size as they extend/along the length of the body member.

17. The device of claim 2, further comprising an elongate tubular inner sheath member constructed and arranged to slide within the conduit of the body member, and at least partially along the length thereof.

18. The device of claim 17, said sheath member being sized and shaped to cover at least some of the openings of said plurality of openings in the body member.

19. The device of claim 2, said body member being constructed and arranged to expand radically about its longitudinal axis as the fluid to be delivered into the body is passed therethrough.

20. The device of claim 2, further comprising at least one fluid guide defined within the surface of the conduit and extending outwardly of the axis of the body member, said at least one guide being constructed and arranged to guide the fluid to be delivered into the body to at least one of the plurality of openings defined in the body member.

21. A system for delivering a pressurized fluid stream carrying one or more agents under pressure into a body, said system comprising:

a) a trocar sleeve, comprising;

i) an elongate tubular body member formed about a longitudinal axis;

ii) said body member having a proximal end with an inlet port defined thereat, and a spaced distal end with an outlet port defined thereat;

iii) an open chamber conduit defined within the body member by the inlet port and the outlet port in cooperation with the body member, said conduit extending substantially the length of the body member said open fluid chamber at times partially obstructed by an instrument to produce a partially obstructed cross sectional fluid flow area through the open fluid chamber and thereby increase a velocity of a fluid stream flowing therein; and

iv) a plurality of spaced openings defined in the body member and opening into at least a portion of the obstructed cross sectional fluid flow area in said conduit, said plurality of openings 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 openings larger than the obstructed cross sectional fluid flow area so as to maintain a velocity of the fluid stream discharging from each of the plurality of openings in a non jet streaming condition;

b) a supply of the fluid to be passed into the body; and

c) a means for introducing the fluid into said body member.

22. The device of claim 21, said means for introducing the fluid comprising a stopcock, a leur lock, a pressure regulator device, a syringe, an intravenous bag, and a bulb pressure manometer.

23. A method of delivering a pressurized fluid stream carrying one or more agents under pressure into a body, said method comprising the steps of:

a) inserting a distal end of an elongate trocar sleeve into the body, the trocar sleeve having a proximal end spaced from its distal end;

b) passing the fluid to be delivered into the proximal end of the trocar sleeve and flowing the fluid through an open chamber in the trocar sleeve, the open chamber being partially obstructed when housing an instrument therein to produce a partially obstructed cross sectional fluid flow area through the open chamber to thereby increase a velocity of a fluid stream flowing therein; and

c) dispersing the fluid from the trocar sleeve and into the body through a plurality of spaced openings defined in the trocar sleeve with the plurality of openings each having a cross sectional fluid discharge area discharging a fluid stream into the body with the total fluid cross sectional fluid discharge area of said plurality of openings larger than the partially obstructed cross sectional fluid flow area so as to maintain a velocity of the fluid stream discharging from each of the plurality of openings in a non jet streaming condition.

24. The method of claim 23, step c) comprising the step of dispersing the fluid from the trocar sleeve through said plurality of spaced openings in a lengthwise direction of the trocar sleeve extending from the distal end thereof at least partially toward the proximal end thereof.

25. The method of claim 23, step c) comprising the step of dispersing the fluid from the trocar sleeve through said plurality of spaced openings substantially along the length of that portion of the trocar sleeve inserted into the body.

26. A trocar sleeve for insertion into a body for use in carrying viewing or surgical instruments while continuing to deliver a fluid stream carrying one or more agents into the body, said trocar sleeve comprising:

an elongate tubular body member formed about a longitudinal axis;

said body member having a proximal end and a spaced distal end;

an inlet port defined at the proximal end of the body member;

the inlet port and the outlet port defining in cooperation with the body member a conduit having an open fluid chamber extending substantially the length of the body member, said open fluid chamber at times partially obstructed by an instrument to produce an obstructed cross sectional fluid flow area through the open fluid chamber and thereby increase a velocity of a fluid stream flowing therein to a jet streaming condition; and

a plurality of spaced openings defined in the body member and opening into the obstructed cross sectional fluid flow area in said conduit, said plurality of openings 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 openings larger than the obstructed cross sectional fluid flow area to thereby maintain a velocity of the fluid stream discharging from each of the plurality of openings in a non jet streaming condition.