Surgical instrument and method for use

Patent metadata

Field	Value
Publication number	US-9955858-B2
Application number	US-54569009-A
Country	US
Kind code	B2
Filing date	Aug 21, 2009
Priority date	Aug 21, 2009
Publication date	May 1, 2018
Grant date	May 1, 2018

Abstract

An apparatus includes a tubular structure having a proximal end, a distal end, and a body extending between the proximal and distal ends, wherein the body includes a lumen for housing at least a part of an imaging device, and a fluid delivery channel that is fixed in position relative to the body, and an opening that is in fluid communication with the fluid delivery channel, wherein the fluid delivery channel has a first portion, and a second portion that forms an angle with an axis of the first portion.

First claim

What is claimed:

1. A surgical system, comprising:
a tube having an axis, a proximal end, and a distal end;
a retractor slidable relative to the tube, wherein the retractor comprises:

a distal portion extendable relative to the distal end of the tube, the distal portion of the retractor comprising a first tip and a second tip spaced apart from one another to define a space therebetween for grasping a main vessel; and
a surgical device separate from the retractor, the surgical device having a first jaw and a second jaw for grasping through a clamping motion a branch vessel of the main vessel, wherein the first and second jaws are extendable relative to the distal end of the tube and are relatively movable with respect to one another by a pivot rotation about a hinge from a first open position, wherein the first and second jaws are spaced apart from one another, to a second closed position, wherein the first and second jaws are closer in proximity to one another than the first position,
wherein the first jaw comprises an electrode supported by a first jaw surface, the electrode comprising a first terminal and a second terminal, the electrode is configured to deliver heat upon the receipt of electrical DC energy from a DC energy source, wherein the first terminal is electrically coupled to a first terminal of the DC energy source and the second terminal is electrically coupled to a second terminal of the DC energy source;
wherein the first jaw comprises a lateral protrusion extending lengthwise along the first jaw, lateral sides of the first jaw having an asymmetrical cross-section due to the lateral protrusion extending from the jaw in a direction substantially parallel to a reference line that is substantially perpendicular to the axis of the tube and extending, the cross-section taken substantially perpendicular to the axis of the tube;
wherein the lateral protrusion is configured for abutting the main vessel and positioning the main vessel apart from a portion of the branch vessel clamped between the first and second jaws in the second position; and
wherein the lateral protrusion of the first jaw is spaced apart from the second jaw when the first and second jaws are brought into a position of closest proximity with respect to one another.

2. The system of claim 1 , wherein the distal portion of the retractor has a C-shape configuration and wherein the surgical device comprising the first and second jaws is positionable adjacent to the retractor.

3. The surgical system of claim 1 , wherein:
the first jaw and the second jaw are configured to cut the branch vessel at a cutting point between the first and second jaws and a first distance determined between the cutting point and a first outer edge of the first side, is greater than a second distance, determined between the cutting point and a second outer edge of a second side of the first jaw opposite to the first side.

4. The surgical system of claim 1 , wherein the electrode is supported on the first jaw and not the second jaw.

5. The surgical system of claim 1 , wherein the electrode is substantially flat and forms a part of the cutting point.

6. The surgical system of claim 1 , further comprising:
a lumen in the tube for housing at least a part of an imaging device;
a fluid delivery channel that is fixed in position relative to the tube; and
an opening that is in fluid communication with the fluid delivery channel;
wherein the fluid delivery channel has a first portion and a second portion that forms an angle with an axis of the first portion.

7. The surgical system of claim 6 , wherein at least a part of the fluid delivery channel comprises a conduit having a bent configuration.

8. A surgical system, comprising:
a tube having a proximal end and a distal end and a tube axis;
a retractor extendable relative to the distal end of the tube, wherein the retractor is positionable for receiving a main vessel; and
a surgical device separate from the retractor positionable adjacent to and extendable relative to the distal end of the tube, wherein the surgical device comprises a first jaw and a second jaw for grasping tissue through clamping movement of the first jaw with respect to the second jaw by a pivot rotation about a hinge, each of the first and second jaws comprise lateral sides extending generally lengthwise in the direction of the tube, each of the first and second jaws comprising a jaw surface located between the lateral sides, the first and second jaws together forming a jaw assembly, the jaw assembly having a distal end and a proximal region, and further having a concave side and a convex side each extending along a substantial length of the jaw assembly between the proximal region of the jaw assembly and the distal end of the jaw assembly, wherein the first and second jaws pivotably open and close from a first open position to a second position wherein the first and second jaws are closer in proximity to one another in the second position than in the first position, and to a third position wherein the jaw surface of each of the first and second jaws are brought into approximation of each other as opposing surfaces;
a heating element comprised of an electrically conductive material and supported by an electrically insulating surface of the first jaw, the heating element comprising a first heating element terminal and a second heating element terminal for electrically coupling to a first and second terminal of a DC source respectively to provide heat upon receipt of energy from the DC source;
wherein the first jaw comprises a lateral protrusion having an external surface that is electrically insulating, the lateral protrusion is configured for abutting and positioning a main vessel apart from a first portion of an adjoining branch vessel grasped between the first and second jaws, and
wherein the lateral protrusion of the first jaw is spaced apart from the second jaw when the opposing surfaces of the first and second jaws are brought into the third position.

9. The system of claim 8 , wherein the first and second jaws form a cavity between the lateral protrusion and the second jaw for minimizing compression of a second portion of the branch vessel positioned within the cavity when the opposing surfaces of the first and second jaws are brought into the third position.

10. The system of claim 8 , wherein the lateral protrusion tapers away from the side of the first jaw towards an outer edge of the lateral protrusion.

11. The system of claim 8 , wherein the lateral protrusion extends away from the heating element of the first jaw and wherein the heating is asymmetrically positioned relative to the first jaw to minimize thermal spread from the heating element to an outer edge of the lateral protrusion.

12. The system of claim 11 , wherein an outer edge of the lateral protrusion is spaced apart from a portion of the heating element by at least about 1 mm.

13. The system of claim 11 , wherein the heating element comprises at least two portions spaced apart from one another and electrically communicating with one another.

14. The system of claim 11 , wherein the heating element comprises a central portion and two outer portions located on opposing sides of the central portion, wherein the central portion and the two outer portions are spaced apart from one another and electrically communicate with one another, and in cross-section share a rectangular profile along a substantial portion of the first jaw.

15. The system of claim 14 , wherein the central portion operates at a higher temperature than either of the two outer portions, and the two outer portions ar

Assignees

• Pamnani Ravi
• Ung Thang Tom
• Maquet Cardiovascular Llc

Inventors

• Pamnani Ravi
• Ung Thang Tom

Classifications

• A61B90/361

  Image-producing devices, e.g. surgical cameras · CPC title

• A61B2017/2936

  Pins in guiding slots · CPC title

• A61B2017/2923

  Toothed members, e.g. rack and pinion · CPC title

• A61B1/018 Primary

  for receiving instruments · CPC title

• A61B17/00008

  Vein tendon strippers (tube strippers A61M1/83) · CPC title