Veress needle with illuminated guidance and suturing capability
View Patent ↗A laparoscopic instrument for forming an incision in a body cavity, insufflating the body cavity with gas, and suturing the incision at the completion of the surgery includes a set of jaws at the distal end of the Veress needle or cannula. The jaws are pivoted to one another for motion between an open position or a closed position in which they may be used to grasp a suture in the body cavity for removal from the cavity for knotting. A push mechanism at the proximal end of the instrument moves the jaws between their open and closed position on successive actuations of a pushbutton and retains them in that state until the next push. An illumination source is provided for the distal end of the instrument to provide illumination through the walls of the body cavity so that the surgeon can determine the degree of penetration of the instrument into the body cavity and can identify any major arteries which should be avoided in the formation of other laparoscopic openings.
1. A device for use in laparoscopic surgery adapted to form an incision in a body cavity, insufflate the cavity with gas through the incision, and draw sutures through the incision to close off the incision, comprising:
an elongated cannula having a handle at a proximal end and a sharpened trocar at a distal end;
a tubular Veress needle having a proximal end and a distal end supported within the cannula;
a pair of suture-engaging jaws disposed at the distal end of the Veress needle;
a gas valve for introduction of gas at the proximal end of the Veress needle for passage through an incision formed by the trocar into a body cavity;
a control wire connecting the suture-engaging jaws to the proximal end of the cannula; and
a pushbutton actuated extension-retraction mechanism connected to the control wire at the proximal end of the cannula and adapted to move the control wire between extended and retracted positions and to retain it in a given position until the pushbutton is again actuated, to thus open and close the jaws and to retain the jaws in such opened or closed position until the next actuation of the pushbutton.
2. The device of claim 1 further comprising an illumination source disposed at the proximal end of the device and said cannula is formed of light-conducting plastic which carries the illumination to the distal end of the device.
3. The device of claim 1 further comprising an illumination source operative to provide illumination to the distal end of the device through a clear polymer Veress needle.
4. The device of claim 3 in which the illumination source is an LED.
5. A device for use in laparoscopic surgery adapted to form an incision in a body cavity, insufflate the cavity with gas through the incision, and draw sutures through the incision to close off the incision, comprising:
an elongated cannula having a handle at a proximal end and a sharpened trocar at the distal end;
a tubular Veress needle having a proximal end and a distal end supported within the cannula;
a pair of suture-engaging jaws disposed at the distal end of the Veress needle;
a gas valve for introduction of gas at the proximal end of the Veress needle for passage through an incision formed by the trocar into a body cavity;
a control wire connecting the suture-engaging jaws to the proximal end of the cannula; and
a pushbutton actuated extension-retraction mechanism connected to the control wire at the proximal end of the cannula and adapted to move the control wire between extended and retracted positions and to retain it in a given position until the pushbutton is again actuated, to thus open and close the jaws and to retain the jaws in such opened or closed position until the next actuation of the pushbutton, said extension-retraction mechanism consisting of a rotatably supported ratchet member caused to move between rotating positions in which the control wire is either extended or retracted between successive depressions of the pushbutton.
6. The device of claim 5 wherein said cannula is formed of light conducting plastic and an illumination source is disposed at the proximal end of the cannula operative to transmit light to the distal end of the device which is visible at the proximal end of the device to allow determination of the position of the distal end within an operating site in a body cavity.