Wounded tissue heals the fastest when related wound layers lie against one another without any tension. Therefore, larger wounds are usually sutured. Typically, the surgeon pierces the thread on both sides of the wound through the tissue and knots the thread. Long wounds inevitably contain multiple knots – these are often not cosmetically satisfying.
More cosmetically appealing is a suture that runs only intra- or subcutaneously. However, these sutures require great surgical skills and are possible only at very accessible wounds..
With the Doci Innovations spiral needle, wounds can be sutured easily and cosmetically appealing, even in less accessible areas. In this case, the spiral needle is used in combination with an alternating thermal treatment of the tissue used. Tendons and muscles, vessels and nerves are sutured more accurately and faster with the spiral needle than with conventional needles. Also, ruptures of the muscle fiber can be treated with the spiral needle - thereto the surgeon would have to suture the rupture across and along the course of muscle.
The spiral needle is wound like a corkscrew. It is designed as a hollow needle. Inside of the needle runs the surgical thread, which usually has an absorbable tip. Depending on the application (e.g., muscles, sublayer or fatty layer) there are different variants of the spiral needle available, which differ in diameter, inner thickness and size of the threaded hole. The spiral needle can be twisted to the right or to the left - depending on which direction it is to be sutured.
The surgeon inserts the spiral needle in a rotating motion into the tissue. Depending on the desired elevation of the skin, the surgeon caputures the tissue components that have to be connected by travelling from the top layer through the middle layer to the bottom layer and the muscle
The deeper the desired needle duct, the larger the diameter of the spiral needle has to be chosen and the greater the generated tightening of the skin will be.
If it is an absorbable tip, the tip tilts during the reverse twist of the needle from the tissue and spreads quickly like an umbrella, when pressure is applied on the handle of the needle. Like this a closure of the suture channel is generated; the absorbable suture remains in the tissue. If the needle tip is made of metal and is therefore not absorbable, the surgeon holds it with a surgical forceps, so that the absorbable thread can remain in the tissue. Subsequently, the wound edges can be joined together by the contraction of the regular sub- or intracutaneous punctures.
To ensure that no gap between the cut – off canal and the remaining thread is created and to make sure that not blood from the inside of the vessels emerges at the cut – off canal, as well as to improve the cohesion of the tissue, the suture area is at first frozen. This causes an expansion of the tissue due to the larger mass of tissue fluid. The tissue is then reheated immediately to 50 ° to 60 ° C. Due to the contraction of the capillary and of the connective tissue in the cutting area , as well as the immediate reheating, the tissue is tightened - the suture has a better grip. The thermal exchange treatment can be repeated if necessary.
The thermal exchange treatment may also be applied to reduce the adipose tissue. The surgeon inserts the spiral needle into the fatty layer of the hypoderm. The needle can be heated and cooled via its handle. When the surgeon inserts the needle into the fat tissue, the temperature is transferred to the tissue - this thermal exchange treatment leads to the reduction of the fat tissue, since the fat cells are destroyed by the temperature change. Small openings in the needle take up the destroyed fat tissue - so the fat can be easily removed after the treatment.
With the spiral needle of Doci Innovations, the plastic surgery gains a new and unique technique of tightening, concerning the skin lift – no conventional surgical cut, drug injections such as Botulinum Toxin A or fillers are needed.
The surgeon inserts the spiral needle, including the thread into the skin surface, through the lower and middle layers of the skin through to the muscle layer.
Once being in touch with the spiral needle, the subcutaneous layer and the muscles that touch the spiral needle at the muscle attachment, roll up slightly.
On the other side of the lifting area, the spiral needle is gently taken out of the skin, without picking up the thread.
The two ends of the thread are held by the surgeon; if the thread tip is absorbable, it remains in the skin or on the skin surface due to its anchor-like shape. Now the surgeon can pull on both sides of the thread. The subcutaneous tissue, which is passed by the thread, pulls the muscle attachments together.
Thus, the skin tightens for a very long time - this is ensured by the long-lived thread that grows together with the skin.
J´Depending on the thickness of the lifting of the skin area, a spiral needle can be used with different diameters respectively. By choosing the correct diameter and the skin depth at which the treatment is carried out with the spiral needle, the surgeon can precisely determine how tight the subsequent lifting, concerning height and length should be.