Apparatus for manufacturing scaffold and scaffold manufactured by the same

Patent metadata

Field	Value
Publication number	US-9730817-B2
Application number	US-201314145013-A
Country	US
Kind code	B2
Filing date	Dec 31, 2013
Priority date	Feb 20, 2013
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

In an apparatus for manufacturing a scaffold and a scaffold manufactured by the apparatus, a collector is disposed under a dispensing head that dispenses melted bio materials (polymer) for manufacturing the scaffold. The collector has a cylindrical tube shape. Both sides of the tube shape are fixed. Thus, the tube is securely fixed and bending of the tube is prevented. Also, accuracy and preciseness of the scaffold are improved.

First claim

What is claimed is:

1. An apparatus for manufacturing a scaffold, comprising:
a dispensing head including:
a liquid storing part that stores melted bio materials comprising a polymer,
a nozzle part dispensing the melted bio materials supplied from the liquid storing part, and
a heating part controlling a temperature of the melted bio materials stored in the liquid storing part;

a collector having a cylindrical shape, the collector being disposed under the dispensing head to collect the melted bio materials dispensed through the nozzle part;
a dispensing position controller transporting the dispensing head or the collector in a direction selected from the group consisting of an X direction, a Y direction and a Z direction to control a dispensing position; and
a collecting position controller including:
a pair of supporting parts spaced apart from each other in an extending direction of the collector,
a pair of fixing parts disposed on the pair of supporting parts, respectively, the pair of fixing parts holding and fixing both ends of the collector,
a transporting part that transports at least one of the pair of supporting parts in the extending direction of the collector, and
a rotating part disposed at least one of the pair of fixing parts to rotate the collector along the extending direction as an axis.

2. The apparatus for manufacturing the scaffold of claim 1 , wherein
the pair of fixing parts of the collecting position controller hold and fix the both ends of the collector, and
the transporting part transports at least one of the pair of supporting parts so that a distance between the pair of supporting parts is increased along the extending direction of the collector, and so that a pulling tension is applied to the collector in the extending direction and the both ends of the collector are held and fixed.

3. The apparatus for manufacturing the scaffold of claim 1 , wherein
each of the pair of supporting parts of the collecting position controller is protruded in the extending direction of the collector to form a receiving portion having an empty space, and
each of the pair of fixing part includes:
a collet having one side, into which the collector is inserted, and another side received in and supported by the receiving portion; and
a clamper supporting the one side of the collet and combined with the receiving portion so that the collet is received in and fixed to the receiving portion, and so that the collector is inserted into the collet and the receiving portion is combined with the clamper, thereby fixing and holding the collector.

4. The apparatus for manufacturing the scaffold of claim 3 , wherein
a receiving screw is formed on an outer surface of the receiving portion of the collecting position controller,
a clamping screw corresponding to the receiving screw is formed on an inner surface of the clamper corresponding to the receiving portion, and
the receiving screw is combined with the clamping screw by a screw combination, thereby combining the receiving portion to the clamper.

5. The apparatus for manufacturing the scaffold of claim 4 , wherein
the one side of the collet of the collecting position controller includes a collet head having a cross-sectional diameter that decreases as a distance from a periphery is decreased to form a tapered shape, and a clamping tapered portion formed on an inner surface of an opposite side to the receiving portion of the clamper, and having an inclined inner surface corresponding to the collet head,
the another side of the collet includes a collet tail of which a diameter of an inner surface is decreased, as a distance from the periphery is decreased, and a receiving tapered portion formed on an inner surface of the receiving portion and having an inclined surface corresponding to the collet tail, and
the collet head and the collet tail are pressed to make contact with the clamping tapered portion and the receiving tapered portion, respectively, when the receiving portion is combined with the clamper so that the collet is compressed.

6. The apparatus for manufacturing the scaffold of claim 1 , wherein
each of the pair of fixing parts of the collecting position controller comprises at least two divided subparts that are dividable in a radial direction with respect to an extending direction of the collector as an axis,
the divided subparts are combined to form the fixing part having a receiving portion, and a hook is protruded at an entry of the receiving portion, and
the collector is disposed in a position corresponding to the receiving portion while the divided subparts are separated, and then the divided subparts are combined so that the hook holds the collector to fix the collector.

7. The apparatus for manufacturing the scaffold of claim 6 , wherein the receiving portion has a diameter substantially equal to or smaller than the collector.

8. The apparatus for manufacturing the scaffold of claim 6 , wherein the collector has a recess corresponding to the hook.

9. The apparatus for manufacturing the scaffold of claim 1 , wherein the collecting position controller fixes the collector that has a ratio of diameter to length to be about 0.05 to about 0.5.

10. The apparatus for manufacturing the scaffold of claim 1 , wherein the liquid storing part stores melted or liquefied bio compatible materials.

11. The apparatus for manufacturing the scaffold of claim 1 , wherein the collector is replaceable with another collector having a different diameter.

12. The apparatus for manufacturing the scaffold of claim 1 , further comprising a controller connected to the dispensing position controller to control dispensing position, and connected to the collecting position controller to control speed of rotation of the fixing part.

Assignees

• Korea Mach & Materials Inst
• Protek Korea Co Ltd
• Protek Korea Co Ltd

Inventors

• Lee Junhee
• Park Sua
• Kim Wan-Doo
• Choi Seung-Ho

Classifications

• A61F2/91

  made from perforated sheets or tubes, e.g. perforated by laser cuts or etched holes · CPC title

• A61F2/82 Primary

  Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07) · CPC title

• A61F2240/001

  Designing or manufacturing processes · CPC title

• A61L31/04

  Macromolecular materials · CPC title

• B29C41/085

  by rotating the former around its axis of symmetry · CPC title