Perforating device for dermal administration

• US 5,964,729 A
• Filed: 09/29/1997
• Issued: 10/12/1999
• Est. Priority Date: 05/23/1994
• Status: Expired due to Fees

• Current Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Original Assignee: Samsung Electro-Mechanics Co., Ltd. (Samsung Group)
• Inventors: Jang, Kwang Kyun, Choi, Sang Bae
• Primary Examiner(s): Coggins, Wynn Wood
• Assistant Examiner(s): Blyveis, Deborah
• Application Number:
  US08/937,582
• Time in Patent Office: 743 Days
• Field of Search: 606/186, 606/183
• US Class Current: 604/47
• CPC Class Codes: A61B 17/205 Vaccinating by means of needles or other puncturing devices
• CPC Class Codes: A61B 17/32093 for skin incisions
• CPC Class Codes: A61B 17/322 Skin grafting apparatus
• CPC Class Codes: A61M 37/00 Other apparatus for introducing media into the body for reproduction or fertilisation A61B17/425; apparatus for iontophoresis or cataphoresis A61N1/30; Percutany, i.e. introducing medicines into the body by diffusion through the skin salt baths A61H33/04

Abstract

A perforating device for dermal administration of medicine is disclosed. The device includes skin perforating members provided with a plurality of needles and received in a casing. The skin perforating members have alternately arranged needle discs and spacer discs which easily and evenly perforates the skin to a depth, suitable for dermal administration of medicine, by simply rolling the assembly on the skin. The device also includes a biasing mechanism for elastically vertically moving the assembly during skin perforating and thereby preventing the skin perforating members from excessively perforating the skin. The device informs the user of the excessive pressure of the assembly and thereby preventing possible skin damage.

Claims

1. A perforating device for dermal administration of a pharmaceutically acceptable composition, comprising:

a casing including a pair of opposing side walls respectively formed with opposed bottom side portions and a shaft hole located in each of said bottom side portions;

a plurality of needle disks having a plurality of skin perforating needles on their circumferential surfaces, wherein the opposing side walls substantially entirely enclose the disks but are open at a bottom thereof through which the skin perforating needles partially project outside the casing;

a central shaft received in each of said shaft holes in said bottom side portions for holding the needle disks assembled therealong in a face-to-face relationship with one another and having opposed side ends;

a plurality of spacers assembled on the central shaft so that each of the spacers is alternately disposed between the needle disks;

a fixing arrangement for fixing and joining the needle disks with the respective spacers to permit rotation of the disks and spacers, said needle disks being rotatably supported by the casing at the opposed side ends of the central shaft.

2. The device of claim 1, wherein said casing substantially entirely encloses the central shaft.

3. The device of claim 2, wherein said needle disks project partially out of a bottom of the casing.

4. The device according to claim 1, wherein bearings are respectively located in each of the shaft holes.

5. The device according to claim 1, wherein outermost ends of the central shaft are supported in the casing.

6. The device of claim 1, wherein each of the skin perforating needles is generally of triangular shape and has saw teeth on its periphery.

7. The device of claim 1, wherein each of said opposing side walls extends longitudinally along the entire length of said shaft and on opposite sides thereof to enclose said needle disks.

8. A perforating device for dermal administration of a pharmaceutically acceptable composition, comprising:

a casing having opposed bottom sides and steps formed in each bottom side and a partition for dividing the inside of the casing into top and bottom chambers, said partition having a pair of holes;

a pair of moving units received in said bottom chamber of the casing such that the moving units are elastically and vertically movable in the casing under the guide of the holes of the partition, each of said moving units having a spring holder and a bearing body;

means for biasing the moving units to make the moving units move elastically and vertically in the casing, said biasing means being interposed between the spring holders of the moving units and the casing;

perforating roller means having a plurality of perforating needles on its outer surface and a center rotating shaft, having opposed side ends said roller means being seated on the opposed steps of the casing and rotatably supported, at the opposed side ends of the center rotating shaft, by the bearing bodies of the moving units such that the roller means partially projects out of the bottom of the casing; and

means for sensing and displaying vertical movement of said moving units, said sensing and displaying means being placed in said top chamber of the casing.

9. The device according to claim 8, wherein said sensing and displaying means comprises:

a pair of switching devices acting by contact with said spring holders of said moving unit;

a pair of display devices acting in accordance with said switching devices, respectively;

a power supply for supplying said switching devices and said display devices with a source voltage; and

a circuit board for integrating said switching devices, display devices, and power supply.

10. The device according to claim 9, wherein said switching devices are transistors.

11. The device according to claim 9, wherein said display devices are light-emitting diodes.

12. The device according to claim 9, wherein said display devices are melody integrated-circuits.

13. The device according to claim 9, wherein said display devices are buzzers.

14. The device according to claim 8, wherein said biasing means is a coil spring.

15. A perforating device for dermal administration of a pharmaceutically acceptable composition, comprising:

a casing having opposed bottom side portions and a shaft hole located in each of said bottom side portions and having opposed step portions;

a moving unit received in said casing such that it is elastically and vertically movable in the casing, the bottom of said moving unit being seated on the opposed step portions of the casing;

means for biasing the moving unit to make the moving unit move elastically and vertically in the casing, said biasing means being interposed between the moving unit and the casing; and

perforating roller means having a plurality of perforating needles on an outer surface thereof and a center rotating shaft having opposed ends, said roller means being rotatably supported at the opposed ends of the center rotating shaft by the moving unit such that the roller means partially projects out of the bottom of the casing.

16. A perforating device for dermal administration of a pharmaceutically acceptable composition, comprising:

a casing having opposed bottom side portions and opposed step portions respectively formed in said bottom side portions;

a moving unit elastically and vertically movably received in the casing, a bottom of said moving unit being seated on the opposed step portions of the casing;

a biasing member arranged to bias the moving unit to make it move elastically and vertically in the casing, said biasing member being interposed between the moving unit and the casing; and

a plurality of perforating rollers having a plurality of perforating needles on an outer surface thereof and a center rotating shaft having opposed ends, said rollers being rotatably supported at the opposed ends of the center rotating shaft by the moving unit such that the rollers partially project out of the bottom of the casing.