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Patent Searching and Data


Title:
DRUG COATING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2013/121445
Kind Code:
A4
Abstract:
A drug coating apparatus (100) for coating an implant (206) with a drug is described. The drug coating apparatus (100) includes a holding unit (102) having a top collet (202-1) for holding the implant (206) from a top end of the implant (206), and a bottom collet (202-2) to hold the implant (206) from a bottom end of the implant (206). The drug coating apparatus (100) includes at least one rotary drive (115) coupled to the holding unit (102) for rotating the top collet (202-1), the bottom collet (202-2) and the implant (206), and includes a spraying unit (104) to spray-coat the drug on the implant (206).

Inventors:
GAYWALA RAHUL MAHENDRAKUMAR (IN)
NAROLA VALLABH MOHAN (IN)
Application Number:
PCT/IN2013/000100
Publication Date:
December 05, 2013
Filing Date:
February 15, 2013
Export Citation:
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Assignee:
SAHAJANAND TECHNOLOGIES PRIVATE LTD (IN)
International Classes:
B05B15/02; B05B7/02; B05B12/00; B05B13/02; B05B13/04; B05B14/43; B05B15/12; B05B15/55; B05B15/80
Attorney, Agent or Firm:
RAE, Konpal et al. (Safdarjung Enclave, New Delhi 9, IN)
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Claims:
AMENDED CLAIMS

received by the International Bureau on 1 5 October 201 3 (1 5.1 0.201 3 )

I/We claim:

1. An apparatus (100) for coating an implant (206) with a drug, the apparatus (100) comprising:

a holding unit ( 102) comprising:

a top collet (202-1) for holding the implant (206) from a top end of the implant (206); and

a bottom collet (202-2) to hold the implant (206) from a bottom end of the implant (206);

at least one rotary drive (1 15) coupled to the holding unit (102) for rotating the top collet (202-1), the bottom collet (202-2) and the implant (206); a spraying unit (104) to spray-coat the drug on the implant (206), wherein the spraying unit (104) comprises a spray gun (106) through which the drug is spray-coated on the implant (206); and

a swinging mechanism coupled to the spray gun (106) to swing the spray gun (106) along a longitudinal axis of the implant (206) for coating the drug, wherein the swinging mechanism comprises:

a stepper motor (308);

a cam shaft (310) coupled eccentrically to the stepper motor (308), wherein the cam shaft (310) is rotated eccentrically by the stepper motor (308); and

a swing rod (304) coupled eccentrically to the cam shaft (310) and coupled to the spray gun (106), wherein eccentric rotation of the cam shaft (310) swings the swing rod (304) and the spray gun (106).

2. The apparatus (100) as claimed in claim 1, wherein the at least one rotary drive (115) rotates the top collet (202-1) and the bottom collet (202-2) in conjunction with each other.

3. The apparatus (100) as claimed in claim 1, wherein the apparatus (100) comprises a control unit (1 14) coupled to the at least one rotary drive (1 15), the control unit (115) controls a rotational speed of the at least one rotary drive ( 115) for controlling number of rotations per minute of the implant (206).

4. The apparatus (100) as claimed in claim I, wherein the holding unit (102) is detachably attached to the apparatus (100) through a sliding mechanism.

5. The apparatus (100) as claimed in claim 1, wherein the apparatus (100) comprises a proximity sensor (109) to determine alignment of the holding unit (102) attached for coating the drug on the implant (206).

6. The apparatus (100) as claimed in claim I, wherein the swinging mechanism comprises a size selector multiport (1 10) coupled to the stepper motor (308) to set a distance between the cam shaft (310) and the swing rod (304) based on a length of the implant (206) to vary an angle of swing of the spray gun (106).

7. The apparatus (100) as claimed in claim 1, wherein the apparatus (100) comprises a control unit (1 14) coupled to the swinging mechanism, the control unit (114) controls a speed of swing of the spray gun (106).

8. The apparatus (100) as claimed in claim 1, wherein the spray gun (106) comprises:

an atomizer to atomize the drug; and

an inlet (108) to provide one of a pressurized air and a pressurized gas to the atomizer for atomizing the drug,

wherein the apparatus (100) comprises a control unit (1 14) coupled to the spraying unit (104), the control unit (114) controls pressure of one of the pressurized air and the pressurized gas provided for the atomization.

9. The apparatus (100) as claimed in claim 1, wherein the apparatus (100) comprises a suction and filter panel (116) to remove waste drug from the apparatus (100) during coating of the drug.

10. The apparatus (100) as claimed in claim 9, wherein the suction and filter panel (116) filters air that enters from outside into the apparatus (100) when a reverse pressure condition occurs in the apparatus (100).

11. The apparatus (100) as claimed in claim 1, wherein the apparatus (100) comprises a control unit (114) coupled to the spraying unit (104), the control unit (1 14) controls time period of spray-coating of the implant (206).

12. The apparatus (100) as claimed in claim 1, wherein the apparatus (100) comprises a control unit (1 14), the control unit (114) puts the apparatus (100) in a standby mode for cleaning the spray gun (106).

13. The apparatus (100) as claimed in claim 12, wherein the control unit (1 14) puts the apparatus (100) in the standby mode after the apparatus (100) has performed a predefined number of spray cycles.

14. The apparatus (100) as claimed in claim 12, wherein the control unit (1 14) puts the apparatus (100) in the standby mode after the apparatus (100) has performed drug spraying for a predefined time duration.

15. The apparatus (100) as claimed in claim 12, wherein the control unit (1 14) puts the apparatus (100) in the standby mode based on an input for cleaning received from a user.

16. The apparatus (100) as claimed in claim 1, wherein the apparatus (100) comprises a control unit (1 14), wherein the control unit (1 14) receives a plurality of user inputs to control operational parameters of the apparatus (100), the plurality of user inputs comprises length of implant to be coated, size of collets, and rotational speed of collets.