Surgery – Instruments – Suture – ligature – elastic band or clip applier
Reexamination Certificate
1999-01-18
2001-04-24
Buiz, Michael (Department: 3731)
Surgery
Instruments
Suture, ligature, elastic band or clip applier
C606S144000
Reexamination Certificate
active
06221085
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a laparoscopic surgical device that allows a surgeon to safely and with much greater control place the stitch on the tissue that needs to be sutured. Suturing in laparoscopic surgery at the present time is one of the most difficult parts of the procedure.
2. Description of the Prior Art
At the present time, laparoscopic surgeons are using a standard needle with suture material that is grasped with the needle holder, and is passed through the surgical port in the patient's abdomen. Once the needle is passed through the tissue that needs to be sutured, the surgeon must release the needle holder, grab the tip of the needle, and pull it out of the tissue. It is very difficult for surgeons to again grab the needle in the proper position to be able to make the next stitch. This process requires, in many cases, multiple attempts to pass the stitch, which increases the time and cost of the surgical procedures. With the Suturing Device of the present invention the surgeon will have much greater control placing the stitch, which will be more convenient for both the surgeon and the patient.
SUMMARY OF THE INVENTION
The suturing device of the present invention is designed in such a way that a surgeon's hand is in full control of the needle and the suture material where he does not need to grab or release the needle but actually just grab the suture material that comes out of the needle hole. With this instrument, the surgeon is able to place a single stitch or suture in the tissue in a continued stitching manner.
The spool is capable of holding a load of suture material in different lengths that satisfy shorter or longer procedures, and is separately prepared and sterilized for surgical procedures. A single squeeze of the handle by the surgeon activates the moving mechanism and turns the needle up to 360 degrees, which is normally more than enough to get through the tissue that needs to be sutured.
The present invention includes a proximal end and a distal end where the proximal end is a handle made of two portions, one being stationary and the other moving.
The moving portion turns the gear placed in the proximal end of the stationary portion which is connected with the proximal end of the needle. The gear is turned by squeezing the moving portion of the handle, which will actually turn the needle up to 360 degrees.
The distal end is a semi-circular tubular needle with a sharp cutting tip and an opening for the passage of suture material. This opening is placed in an oblique shape that is on the outside of the semi-circular needle, through which the surgeon can grab the suture material much easier than if the opening is facing the inside of the semi-circular needle.
The transitional portion of the needle is the portion in between the semi-circular portion and the proximal portion of the needle, which lays in the axial center of the semi-circular needle. The proximal end of the needle passes through the distal bushing of the distal tubular shaft of the instrument which is placed in between the distal bushing and the proximal bushing that is in the stationary portion of the handle. This tubular portion is made of different diameters such as 5, 10, 12 mm outside diameter, or any other desired diameter that fits in the existing cannulus used in the laparoscopic surgery.
The proximal end of the needle extends to the turning shaft placed in the stationary portion of the handle through the proximal bushing with its distal ends and the proximal end is secured in the very proximal portion of the stationary portion of the handle.
The proximal end of the needle finishes in the top opening of the turning shaft for the placement of suture material.
Suture material is stored on a removable and disposable spool which is placed in the middle portion of the stationary portion of the handle.
The joint of the moving and stationary portions of the handle has a spring that will automatically return the moving part of the handle in its original position, and also return the needle to its original position. In this way, the surgeon will need to concentrate only on the site of the needle penetration.
These and other objects, aspects, features, and advantages of the present invention will become apparent from the following detailed description of the preferred embodiment taken in conjunction with the accompanying drawings.
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Buiz Michael
King Anthony
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