Christoudias curved needle suture assembly

• US 5,100,421 A
• Filed: 02/05/1991
• Issued: 03/31/1992
• Est. Priority Date: 02/05/1991
• Status: Expired due to Fees

• Current Assignee: Surgical Inventions & Innovations
• Original Assignee: Cyprus Endosurgical Tools, Inc.
• Inventors: Christoudias, George C.
• Primary Examiner(s): Pellegrino, Stephen C.
• Assistant Examiner(s): Jackson, Gary
• Application Number:
  US07/650,778
• Time in Patent Office: 420 Days
• Field of Search: 606/139, 606/144, 606/145, 606/147
• US Class Current: 606/147
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/062 Needle manipulators
• CPC Class Codes: A61B 2017/00353 one mechanical instrument performing multiple functions, e.g. cutting and grasping channel for multiple instruments A61B2017/3445; instrument channel A61B2017/22072; replaceable heads A61B2017/2931; suction A61M1/00
• CPC Class Codes: A61B 2017/2906 Multiple forceps
• CPC Class Codes: A61B 2017/3445 used as instrument channel for multiple instruments catheters A61B2017/22072
• CPC Class Codes: A61B 2017/347 Locking means, e.g. for locking instrument in cannula

Abstract

An assembly to facilitate endoscopic surgery comprises an endoscopic dual head needle holder, a needle transporter, a needle guide forceps and an endoscopic suture with a terminal loop. The assembly is utilized in a unique process wherein the tissue to be sutured is grasped by the needle guide forceps and the needle inserted into and through the tissue with the assembly. The needle is inserted into a body cavity with a transporter, a first needle holder is advanced to the appropriate level and the needle transferred to the first needle holder. The needle is then passed through the tissue to a second needle holder and then back to the first needle holder. The needle is then passed through the suture loop securing the thread on the tissues. Continuous suturing is then achieved by successive passage of the needle by the first needle holder through the tissues by the first needle holder, retrieval of the needle by the second needle holder and passage of it back to the first needle holder. Continuous suturing is therefore accomplished at a fast, safe and effective pace. Finally, the needle is transferred to a transport instrument, the thread cut and the needle removed from the cavity by the transporter.

Claims

1. An endoscopic suture assembly for insertion through a port within a body cavity and for suturing tissue in a laparascopic modality with a needle and suture thread comprises:

a dual head curved needle holder, each needle holder including a handle at one end, an intermediate elongated stem and a head at the other end having a fixed jaw and a movable jaw for grasping a needle therebetween and a support cylinder extending about the stems;

a needle transporter including a handle, an intermediate stem and a head having a fixed and a movable jaw for grasping and transporting a needle through a port into a body cavity and then releasing it after the needle has been grasped by the needle holder jaws;

a needle guide tissue forceps comprising a handle, an elongated stem and a head including fixed and movable jaws for grasping and exposing between the jaws tissue to be sutured; and

an endoscopic suture comprising a needle, a thread connected to one end thereof and a terminal loop at the other end of the thread to permit securing the suture without a conventional knot;

wherein the needle is transferred from the transporter jaws to the needle holder jaws and moved back and forth between the jaws of the respective needle holders to suture tissue held by the needle guide tissue forceps.

2. An endoscopic suture assembly in accordance with claim 1 wherein:

each needle holder includes a fixed limb and a movable limb, a control wire being connected to the movable limb at one end and to the movable jaw at the other end, said jaws being configured to grasp a needle therebetween at a fixed site of the needle and the stem of the needle holder includes a plurality of axial grooves along the upper surface thereof.

3. An endoscopic suture assembly in accordance with claim 2 wherein:

the support cylinder comprises an elongated cylinder having apertures extending axially therethrough to accommodate the needle holder stems and a stop system comprising a ribbon spring having an upper ring portion mounted about the cylinder having an opening therethrough in the cylinder wall and downwardly extending legs, a fulcrum tower mounted to the cylinder body and extending outwardly therefrom and a stop member pivotably connected to the tower and engaging the axial grooves of the stem at one end to prevent rotation of the stem, said end being resiliently urged into engagement with the stem by the legs, which will allow the two needle holders to move at a constant relationship to each other and grasp the needle at a fixed site as desired.

8. An endoscopic suture assembly in accordance with claim 1 wherein:

;

the support cylinder includes means for locking one or both of the needle holders in a predetermined rotational position.

4. A dual head needle holder comprising:

a first and a second needle holder each comprising;

a handle including a fixed limb and a movable limb

an elongated stem having the movable limb pivotably connected thereto at one end and the fixed limb being mounted thereto at a predetermined angle at said end, and said stem having a a plurality of elongated grooves along the portion adjacent the limbs at the other end of the stem

a head comprising a fixed jaw mounted to the stem and a movable jaw pivotably connected thereto,

and a control wire mounted at one end to the movable limb and to the movable jaw at the other end for opening and closing said jaw with respect to the fixed jaw by movement of the movable limb.

5. A dual head needle holder in accordance with claim 4 wherein:

the movable jaw includes a convex inner mating surface and the fixed jaw includes a concave inner mating surface, both of said inner surfaces having a plurality of grooves to grasp a needle therebetween in said grooves.

6. A dual head needle holder in accordance with claim 5 wherein:

the fixed limb and the movable limb each include a loop at the other end thereof and means for locking said limbs together.

7. An endoscopic suture assembly in accordance with claim wherein:

the needle transporter head comprises a pivotable jaw and a fixed jaw having a plurality of curved cooperating grooves therein to grip a curved needle and an elongated groove extending along the stem within which the suturing thread may be positioned.

9. The method of performing endoscopic suturing within a body cavity comprising the steps of

grasping tissue to be sutured with a forceps exposing the tissue between the jaws thereof;

transporting a needle with suturing thread to the vicinity of the tissue;

transferring the needle to a holding and grasping instrument having two heads and being positioned adjacent the exposed tissue;

locking the heads to prevent rotation with respect to each other while permitting vertical movement;

passing the needle from one head to the other head to perform suturing of the tissue; and

transferring the needle to the transporting means to remove the needle from the body cavity.

10. The method of performing endoscopic suturing within a body cavity in accordance with claim 9 including the further steps of:

passing the needle with the suturing thread attached thereto through a loop at the end of the thread to eliminate the ned for tying.