Precision skiver
A skiver for precise removal of outside material from an elongated device, such as a medical catheter or the like, includes a longitudinal recess in a surface and a transverse replaceable blade therein. A removable cover holds the blade in place. In some embodiments, the skiver has a handle extending from the skiver. In other embodiments, an automated mechanism is used to move the elongated device through the skiver.
1. A skiver comprising:
a chassis having a front and a back, the chassis arranged to be supported upon a planar surface, the chassis comprising an internal roller cavity, a tooling cavity and a lumen extending from the front to the back;
a tooling apparatus comprising a body comprising a longitudinal recess of a predetermined cross section; an opening extending to the longitudinal recess; a blade comprising a linear cutting edge, the linear cutting edge disposed in the opening, the tooling apparatus removable from the chassis, the tooling apparatus positionable in the tooling cavity with the longitudinal recess aligned with the lumen;
a first motorized roller and a second motorized roller oriented in the internal roller cavity, the first motorized roller comprising a no crush roller, the second motorized roller comprising a no crush roller, the first motorized roller contacting the second motorized roller, wherein the first motorized roller and the second motorized roller are configured to move an object through the lumen and the longitudinal recess; and
a switch arranged to operate the first motorized roller and the second motorized roller.
2. The skiver of claim 1 , the tooling apparatus further comprising a removable cover for securing the blade in the opening of the longitudinal recess.
3. The skiver of claim 1 , the tooling apparatus further comprising a guide moveable with respect to the body, the guide positioned above the longitudinal recess and arranged to move into the longitudinal recess, the guide biased toward the blade by gravity and arranged to rest upon an object oriented in the longitudinal recess, the guide having a lower surface, wherein a portion of the lower surface is slanted to aid in the feeding of an object into the longitudinal recess.
4. The skiver of claim 1 , the chassis comprising a second internal roller cavity, a third motorized roller and a fourth motorized roller positioned in the second internal roller cavity, wherein the first motorized roller and the second motorized roller are positioned to a first side of the longitudinal recess and the third motorized roller and the fourth motorized roller are positioned to a second side of the longitudinal recess.
5. The skiver of claim 1 , the predetermined cross section of the longitudinal recess is a semicircle, with a diameter.
6. The skiver of claim 5 wherein the diameter of the longitudinal recess is varying along its length.
7. The skiver of claim 6 wherein the diameter of the longitudinal recess at the location of the opening is smaller than the diameter of the longitudinal recess before and after the location of the opening.
8. The skiver of claim 7 wherein the longitudinal recess is tapered on each side of the opening.
9. The skiver of claim 1 further comprising a spacer element positioned between the blade and the body to adjust a depth that the blade extends into the longitudinal recess.
10. The skiver of claim 1 , the chassis comprising a first foot, a second foot and a third foot arranged on a common plane.
11. A skiver comprising:
a chassis arranged to be supported by a flat work surface, the chassis comprising a front, a back, a tooling cavity and a lumen extending from the front to the back; and
a tooling apparatus comprising:
a body comprising a longitudinal recess, a blade recess and an opening between the longitudinal recess and the blade recess;
a blade oriented in the blade recess, the blade comprising a cutting edge, a portion of the cutting edge positioned in the opening;
a cover attached to the body by a fastener, the cover arranged to secure the blade; and
a guide member moveable with respect to the body and the longitudinal recess along a linear axis, the linear axis orthogonal to the longitudinal recess, the guide member positioned above the blade, the guide member biased toward the blade by gravity, the guide member arranged to extend into the longitudinal recess and rest upon an object oriented in the longitudinal recess and bias the object toward the blade under the force of gravity;
the tooling apparatus removable from the chassis, the tooling apparatus positionable in the tooling cavity with the longitudinal recess aligned with the lumen.
12. The skiver of claim 11 , the chassis further comprising an internal roller cavity, a first roller and a second roller positioned in the internal roller cavity arranged to move the object through the lumen, wherein the rollers comprise no-crush rollers.
13. The skiver of claim 12 , wherein the first roller contacts the second roller when the object is not oriented in the longitudinal recess.
14. The skiver of claim 11 , the guide member comprising a bottom surface arranged to contact the object and a slanted surface adjacent to the bottom surface, the slanted surface oriented at an angle to the bottom surface.
15. The skiver of claim 11 , the body comprising at least one guide pin comprising the linear axis, the guide member arranged to move along a length of the guide pin.
16. The skiver of claim 15 , the chassis comprising a guide pin cavity, a portion of the guide pin oriented in the guide pin cavity.
17. The skiver of claim 11 , the guide member comprising a stop arranged to limit movement of the guide with respect to the body.
18. The skiver of claim 17 , wherein the stop is adjustable.
19. The skiver of claim 11 , comprising a first magnet attached to the guide member and a second magnet attached to the body, wherein magnetic force between the first magnet and the second magnet biases the guide member toward the blade.
20. The skiver of claim 11 , the chassis comprising a a first foot, a second foot and a third foot arranged on a common plane.