Medical/Industrial Manipilater Arm/Platform

Anithmi

Trying to Rise Up in North America

Hu_Intro.midHu_Intro.mid (c) 1996 by Anthmi Ent. (1 min. 38 sec.)


'Surgical Snake'

Or, any flexible arm application

Enable Graphics to see Surgical Snake Images Enable Graphics to see Surgical Snake Images


Enable Graphics to see Surgical Snake Images A series of Spheres, joined by Collars

Each Joint is flexible in any direction.

Each Joint can be locked in state, Or bent to any degree within its freedom of travel. (maby to 30 degrees or so)

*Semi spheres Hollow spheres with the tops and bottoms, 'cut off'. (as shown in the diagram). We could call them "Beads".


Total Flex ability. One of the main advantages, is that there is no need for motors and mechanisms within the arm to affect the turning. It may be rigid or flexible in any, and/or all of its joints. Various modes of operation may be employed.


The mechanism of bending the joints, is accomplished by 'Locking' all the joints but the one(s) you want to bend. The force for the bend is from tension, on cords strung along the beads through holes in the outer collars. Allowing the joint, to bend in any direction.


Enable Graphics to see Surgical Snake Images The Beads, are then joined by collars. Shaped 'Rings', that have semispherical surfaces to flush with the not cut off parts, of the cut off ends.

'Locking' the joint between two spheres, can be accomplished by a fixed inner core, with an expanding outer collar. Or with a fixed outer collar, with a contracting inner core. In either case the Bead wall is held firmly between the inner core, and outer collar.

There are undoubtedly numerous ways this expansion or contraction could be accomplished. And other ways to 'lock a joint'.

And various means of supplying the control signals and electrical power to the joint locking mechanisms. But I think wires through the core, or strung along outside with the tension cables make sense.


Enable Graphics to see Surgical Snake Images 'Locking' the joint between two spheres, can be accomplished by an inner collar.

Two 'end' semi spheres with 'holes in the middle' Joined by a hollow cylinder. with inner diameter matching the 'holes'.


Enable Graphics to see Surgical Snake Images The 'inner collar' semi sphers (slightly smaller in spherical diameter, than the "Balls". But larger in percentage of a whole sphere. Like bigger 'cut off ends', with a hole in the middle. Joined together.

This joining cylinder can be made of quartz/phizo crystal. That will expand and contract when the charge in it is varied.

Enable Graphics to see Surgical Snake Images

Enable Graphics to see Surgical Snake Images

Enable Graphics to see Surgical Snake Images


The mechanism of bending the joints is accomplished by 3 or four cords strung through holes in the outer collars. At equal angles, to allow the tension, to bend the joint, in any direction. (3 would be best actually) ((I will make a diagram with 3 instead of 4 that are shown here, so far))


To bend one joint. Just lock all but one joint, and pull the right string or strings to supply the required bending.


In practice, you might want to leave all the joints flexible while you introduce it into some winding path. or bend a number of joints at the same time, in the same direction.


This 'Snake' is of course a platform to affix an operating head on. With a suitable sheath covering the surface. To aid in surgical procedures. Or any mechanical operation requiring this performance.


The possible applications, and means of operating this device seem virtually endless. I expect one would want to control the locking of the joints by computer. Computer controlled motors pulling the cables, would probly be good too. Though a mechanical manually operated lever mechanism might be of value in some cases too.


These are Renderings of Old N3D files I made when the thought first occured to me. (Early 90s) {(I just ran into them recently when I was looking for a floppy to transfer drivers on)} [I Told a few people but not many. (I was thinking of Patenting.) But I got distracted and more or less forgot about it.]
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