Kit comprising a supporting device for use with a polarimeter
A kit having a supporting device for maintaining a transparent article having a longitudinal axis A, a proximal end and a distal end. The supporting device including a proximal holder including a port intended to receive the proximal end of the article, and a distal holder including a receiving part intended to receive the distal end of the article, the port and the receiving part being aligned on the same longitudinal axis B. The supporting device further having a compressor for putting the article under longitudinal compression directed towards a center of the article, when the article is mounted on the supporting device with its longitudinal axis A aligned on the longitudinal axis B, and a polarimeter. The invention also pertains to a method for measuring the stress inside an article made of transparent material.
1. A kit comprising a supporting device for maintaining under longitudinal compression an article made of a transparent material having a longitudinal axis A, a proximal end and a distal end, said supporting device comprising:
a proximal holder having a port intended to receive the proximal end of said article, and
a distal holder having a receiving part intended to receive the distal end of said article; said port and said receiving part being aligned on a common longitudinal axis B; said supporting device further comprising compression means for putting said article under longitudinal compression directed towards a center of said article, when said article is mounted on said supporting device with its longitudinal axis A aligned on said longitudinal axis B, said kit further comprising a polarimeter for measuring the stress in the material of the article when said article is mounted on said supporting device, wherein the port includes one of:
a distal end shaped to engage an inner surface of the proximal end of the article, and
a recess having an inner surface shaped to engage the proximal end of the article.
2. The kit according to claim 1 , wherein at least one of said port and receiving part is rotatable around said longitudinal axis B.
3. The kit according to claim 1 , wherein said port is fixed in translation with respect to said proximal holder along the direction of said longitudinal axis B.
4. The kit according to claim 1 , wherein said receiving part is movable in translation with respect to said distal holder along the direction of said longitudinal axis B.
5. The kit according to claim 1 , wherein said compression means comprises biasing means tending to urge one of said port and said receiving part toward the other one of said port and receiving part.
6. The kit according to claim 1 , wherein said port is provided with a distal conic part distally tapered.
7. The kit according to claim 1 , wherein said receiving part is provided with a ring traversed by a central channel aligned on said longitudinal axis B.
8. The kit according to claim 1 , further comprising said article.
9. The kit according to claim 8 , wherein said article has a substantially tubular shape.
10. The kit according to claim 9 , wherein said article is one of a syringe body, a cartridge, a vial, and an ampoule.
11. The kit according to claim 8 , wherein said transparent material is selected from one or more of glass, polyolefin, and polycarbonate.
12. The kit according to claim 8 , wherein said transparent material is glass.
13. The kit according to claim 8 , wherein said article is a syringe body having a tubular barrel provided with a substantially conic distal tip, said supporting device comprises a port provided with a distal conic part distally tapered and a receiving part provided with a ring traversed by a central channel aligned on said longitudinal axis B, said distal conic part being engaged by friction in a proximal end of said tubular barrel and said conic distal tip being engaged in said central channel when said syringe body is mounted on said supporting device.
14. The kit according to claim 8 , wherein said article is mounted on said supporting device, and said transparent material has a refraction index RI, and wherein said supporting device and article are immersed within a liquid having a refraction index substantially identical to RI.
15. A method for measuring stress inside an article having a longitudinal axis A, a proximal end and a distal end and made of a transparent material, the method comprising the steps of: i) mounting said article on a supporting device according to claim 1 by engaging said proximal end of said article into said port and said distal end of said article into said receiving part, ii) applying on said article a longitudinal compressive force of more than 0 Newton, and iii) measuring the stress inside the article with a polarimeter by directing the light of said polarimeter towards said article.
16. The method according to claim 15 , wherein said longitudinal compressive force ranges from above 0 to 1000 N.
17. The method according to claim 15 , wherein said longitudinal compressive force ranges from above 0 to 20 N.
18. The method according to claim 15 , wherein said article has a substantially tubular shape, said article is rotated around the longitudinal axis B of an angle selected in the range of 0-360° and in that the stress inside the article is measured.