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1. (WO2017130214) TISSUE/VESSEL SEALER AND/OR CUTTER WITH VARIABLE SHAPES OF JAW ASSEMBLY WITH PARTIAL DLC COATING
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We Claim:

1. An instrument for sealing and/or cutting vessel/tissue comprising:

a jaw assembly with TiN coating (Titanium nitride coating) on the jaws at a substantially front portion which is a first portion, wherein the first portion is conductive portion.

a partial DLC coating (Diamond like coating), with optionally a ceramic insert at the substantially central position within the partial DLC coating or at peripheral position of the partial DLC coating, wherein both are at a substantially back portion which is a second portion of the jaw assembly, wherein the second portion is insulated portion.

2. An instrument as claimed in claim 1, wherein pattern of DLC coating is sliding in the front and straight at the back with elevation at further back portion on top side of jaw while it is substantially straight and small sliding inwards at the bottom side of jaw leaving hollow substantially central position or peripheral position for ceramic insert or DLC coating can be partially coated without ceramic insert.

3. An instrument as claimed in claim 1, wherein partial DLC coating can be in an isolated form on the jaws without combination with TiN coating and ceramic insert or optionally can be with ceramic insert.

4. An instrument as claimed in claim 1, wherein the partial DLC coating can further be coated of any shape and pattern on the jaws.

5. An instrument as claimed in claim 1, wherein the TiN coating can be in isolated form without combination with partial DLC coating and ceramic insert.

6. Ah instrument as claimed in claim 1, wherein the principle of optional ceramic insert, partial DLC coating and TiN coating can be used for laparoscopic, minimally invasive, conventional (laparotomy) surgeries, open surgery or'robotic surgery.

7. An instrument as claimed in claim 1, wherein both the jaws can be a moving jaw or one jaw can be moving jaw and another jaw can be fixed jaw.

8. An instrument as claimed in claim 1, wherein the partial DLC coating provides super insulation property to the jaw by preventing sparks that arises due to the common meeting point of the electric poles between an outer tube from where the current passes to the fixed jaw and from a working rod connection where the current passes to the moving jaw, while TiN coating prevents sticking and charring of the tissue/vessel due to precise current dispersion.

9. An instrument as claimed in claim 6, wherein the pole wire from the cable is transferred inside the rod connector housing which transfers the current to the outer tube which in turn is connected and transfers the current directly to the fixed jaw and has a direct pole while the current from the working rod connection is transferred to the moving jaw having pole with second current.

10. An instrument as claimed.in claim 1, wherein the ceramic insert comprises of the property of being bio friendly, withstanding higher degree of temperature, mechanical pressure, force, shocks, and has higher dielectric strength and also can withstand repeated heating and cooling cycles.

11. An instrument as claimed in claim l,wherein according to the operation action or the surgical requirement in the body the proportion or ratio of ceramic insert, DLC coating and TiN coating will change and for each device a specific threshold proportion would be defined based on the surgical procedure.

12. An instrument as claimed in claim 1, wherein there can optionally be substantially half side back insulation with DLC coating at the back side of at least one jaw for prevention of unnecessary tissue burn leaving an area of the tip and substantially near the tip region non insulated for conduction of current and substantially half side TiN coating at the overlapping portion for conduction of current.

13. An instrument as claimed in claim 10, wherein substantially half side back insulation with DLC coating at the back side causes the electric current to cool down at a faster rate when the current is stopped at the same time the electric current heats the conductive portion at a faster rate due to narrow region.

14. An instrument for sealing and/or cutting vessel/tissue comprising:

variety of shapes and geometries of the jaw that provides sealing and/or cuttingat a substantially front portion which is a first portion of the jaw assembly with partial DLC coating, ' TiN coating, and optionally a ceramic insert at a substantially back portion which is a second portion of the jaw assembly.

15. An instrument as claimed in claim 14, wherein the jaws can have substantially elliptical shape orat least one jaw can be tapered at the upper tip for targeting and picking of the tissue/vessel preventing

pushing of the tissue/vessel or the jaw can be curved at the upper region with narrow base having

lesser surface area, jaw allowing expansion of tissue laterally, after the jaws are closed together

reducing the diameter/thickness of the vessel/tissue compressed in the centre at the narrow base.

16. An instrument as claimed in claim 14, wherein the jaws can be flat at the bottom and tapering

round in the front with serrations for gripping of shorter pedicles like round ligament such as ovarian

ligament due to serration at the tip without breakage of tissue/vessel., or the jaw can be concave or

convex shape or jaws can be criss crossing each other for shearing effect.

17. An instrument as claimed in claim 14, wherein the jaws can be having curved shape with extended

longer part and shorter part in zigzag shape at the outer part or tip of at least one jaw and where the

extended longer part and shorter part of both the jaws are in opposing direction facing each other

laterally at the outer part or at the tip region.

18. An instrument as claimed in claim 17,wherein the jaws allow sealing and/or cutting in specific < situations where vessel/tissue are small and covered by tissue adhesions allowing versatility to enter

in deeper spaces such as in hidden or deep in fascia covered locations and the extended longer upper

part and shorter lower part of both the jaws in opposing direction laterally provides easy grip of the

tissue/vessel wherever it is so required during surgery.

19. An instrument as claimed in claim 14, the jaws have grasp projecting edges/ridges and groove on

both the jaws into which the projecting edges/ridges and respective groove of both the jaws enter into

each other on the conductive portion thereby preventing slipping of tissue/vessel and thereby

enhancing proper grasping of the tissue/vessel.

20. An instrument as claimed in claim 14, wherein one jaw comprises elevated portion at the

substantially front edge or front part or front tip of one jaw and the other jaw has sharp pointed

projection for shearing/cutting action at the front tip and sealing, holding, grasping action is

conducted behind the region of front edge or front part or front tip of the jaw.

21. An instrument as claimed in claim 14, wherein the sealer/cutter is embedded inside the insulated - portion substantially in the centre where the sealer/cutter is thick and wide when embedded in the

insulated portion while it is tapered as it moves down for sealing and/or cutting tissue and where the

insulation on the backside is till the tip portion.

22. An instrument as claimed in claim 14, wherein one jaw has substantially elliptical jaw with a sharp or blunt protruding tip on upper part of the jaw tip and flat region on the rest of the part of the jaw tip, while another jaw has a substantially round or U shaped jaw having hollow space window with insulation on the tip at the area where the sharp protruding tip touches the jaw allowing sharp simultaneous sealing and cutting of thinner tissues or adhesions and preventing short circuit, while the flat region moves into the hollow space window.

23. An instrument as claimed in claim 15, wherein the narrow base due to lesser surface area prevents tearing of the tissue due to force of mechanical compression or retraction allowing precise dispersion of current at the j aws.

24. An instrument as claimed in claim 14, wherein the shape of the jaw allows potent safe tissue or arterial as well as venous vessel seal/hemostatic effect and/or cutting effect and decreased thermal dissipation around the target tissue/vessel preventing sticking and charring of tissue and eliminates the force used by the surgeon allowing more hemostatic and precise shearing/cutting further preventing tearing of the tissue due to force of mechanical compression or retraction allowing precise dispersion of current at the jaws.

25. An instrument as claimed in claim 15, wherein tapered shape at the upper tip or other shape of the jaw allows smooth segregation and moving or pushing away of the vessel/tissue preventing unnecessary breaking of the vessel/tissue thus making the procedure safe by preventing excess blood loss and atraumatic.

26. An instrument as claimed in claim 14, wherein any of the geometries and shapes of the jaws can be incorporated in curved jaw.