Micro sewing device

Abstract

The present invention discloses a micro sewing device for percutaneous, endoscopic, laporscopic and minimally invasive surgical procedures for suturing in very small internal body spaces. The device is of cylindrically specific design to provide suturing in the small spaces available.

1 . A micro sewing device comprising:
 a curved hypo or straight needle rigidly coupled to a shank or needle bar;   the shank or needle bar rotably coupled to an actuator arm;   the actuator arm parallel and adjacent to a cylindrical looper cam;   a cylindrically curved looper rigidly coupled to the cylindrical looper cam;   the looper cam with flutes pitched in a helical configuration about the cam cylinder axis, with ball drivers riding in the flutes;   the flute pitch tuned to the rotation defining looper motion in concert with needle tip travel;   the looper cam with a cylindrical sleeve like cam drivers on both cam ends, slidably coupled along the cam axis and concentric to the cam, housing the ball drivers;   each cam driver containing at least one ball driver trapped between the cam driver sleeve and the cam, riding each cam flute;   the actuator bar rigidly coupled to the looper cam driver, and   a housing enclosing the cam, cam drivers, and the actuator arm,   
     whereby actuator arm movement determines the needle tip locus to thread a stitch in concert with the looper, coupled to the moving cam driver turning the cam coupled to the looper, cam driver rotating the looper through pitched flutes in concert with the needle point locus for a designed stitch. 
   
   
       2 . The micro sewing device as in  claim 1  further comprising another cam axially adjacent to the looper cam and supported by another cam driver sleeve. 
   
   
       3 . The micro sewing device as in  claim 2  further comprising another actuator bar rigidly coupled to the cam driver on the looper cam end opposite the looper end. 
   
   
       4 . The micro sewing device as in  claim 1  further comprising an annular traveler riding the looper cam flutes between two cam drivers, with traveler axially coupled to an actuating needle bar for movement in concert with the looper cam flute pitch determined looper rotation. 
   
   
       5 . The micro sewing device as in  claim 1  further comprising tuning the cam flute pitches for loop rotations and needle movement to various stitches. 
   
   
       6 . The micro sewing device as in  claim 1  further comprising a curved hypodermic needle as described in U.S. patent application Ser. No. 11/975,868. 
   
   
       7 . The micro sewing device as in  claim 1  further comprising a straight hypodermic needle. 
   
   
       8 . The micro sewing device as in  claim 1  further comprising a flexible catheter enclosure with force and torsion transmitting cables transmitting forces and torsion from the cam-cam drivers-actuator-housing component motion control integration to the suturing head integration containing the needle-needle bar-looper components, whereby the suturing head can be manipulated remotely and through the catheter from the integrated component end comprising the motion control function. 
   
   
       9 . The micro sewing device as in  claim 1  further comprising a sew off a stitch without material, whereby a stitch maybe started or ended without loose end threads.