MULTI-CHANNEL HEADSPACE EXTRACTION NEEDLE

Abstract

A multi-channel headspace extraction needle is provided. The extraction needle includes an inner needle tube, a sealed connector, and a needle rod and an outer needle tube respectively installed on a top portion and a bottom portion of the sealed connector. The sealed connector includes a first conduit and a second conduit connected with a tube lumen of the outer needle tube. A sealing layer is disposed between a bottom tube wall of the inner needle tube, which extends into the tube lumen of the outer needle tube, and a sidewall of the outer needle tube. The sidewall of the outer needle tube includes a first through-hole and a second through-hole respectively disposed above and under the sealing layer. The first through-hole is connected with the tube lumen of the outer needle tube and the second through-hole is connected with a tube lumen of the inner needle.

Claims

1. A multi-channel headspace extraction needle, comprising an inner needle tube, a sealed connector, and a needle rod and an outer needle tube respectively installed on a top portion and a bottom portion of the sealed connector, wherein the sealed connector comprises a first conduit and a second conduit connected with a tube lumen of the outer needle tube, wherein a sealing layer is disposed between a bottom tube wall of the inner needle tube, which extends into the tube lumen of the outer needle tube, and a sidewall of the outer needle tube, wherein a top end of the inner needle tube passes through a junction of the first conduit, the second conduit and the tube lumen of the outer needle tube to reach the top portion of the sealed connector to hermetically connecting with the sealed connector, and wherein the sidewall of the outer needle tube comprises a first through-hole and a second through-hole respectively disposed above and under the sealing layer, and wherein the first through-hole is connected with the tube lumen of the outer needle tube and the second through-hole is connected with a tube lumen of the inner needle.

2. The multi-channel headspace extraction needle according to claim 1, wherein the first conduit and the second conduit are disposed on a same axis.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG. 1 is an illustrative view of the multi-channel headspace extraction needle according to one embodiment of the present invention;

[0011] FIG. 2 is an enlarged illustrative view of region A of the FIG. 1 according to one embodiment of the present invention;

[0012] FIG. 3 is an enlarged illustrative view of region B of the FIG. 1 according to one embodiment of the present invention;

[0013] FIG. 4 is an illustrative left-side view of the FIG. 1 according to one embodiment; and

[0014] FIG. 5 is an illustrative view of pressurizing on the headspace vial according to one embodiment.

REFERENCE NUMERALS

[0015] inner needle tube 1;

[0016] sealed connector 2;

[0017] needle rod 3;

[0018] outer needle tube 4;

[0019] tube lumen of the outer needle tube 5;

[0020] first conduit 6;

[0021] second conduit 7;

[0022] sealing layer 8;

[0023] first through-hole 9;

[0024] second through-hole 10; and

[0025] headspace vial 11.

[0026] The following text will further describe the present invention with reference to the accompanying drawings. The embodiment is only to explain the present invention but not to limit the technical solution. Any person who skilled in the art may deform and modify the embodiment of the present invention within the spirit and scope of the appended claims, but these deformation and modification belong to the protection scope of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Please refer to FIG. 1 to FIG. 4. In one embodiment, a multi-channel headspace extraction needle includes an inner needle tube 1, a sealed connector 2, and a needle rod 3 and an outer needle tube 4 respectively installed on a top portion and a bottom portion of the sealed connector 2. A first conduit 6 and a second conduit 7 are disposed on a same axis. The sealed connector 2 includes the first conduit 6 and the second conduit 7 connected with a tube lumen of the outer needle tube 4. A sealing layer 8 is disposed between a bottom tube wall of the inner needle tube 1, which extends into the tube lumen of the outer needle tube 4, and a sidewall of the outer needle tube 4. A top end of the inner needle tube 1 passes through a junction of the first conduit 6, the second conduit 7 and the tube lumen of the outer needle tube 4 to reach the top portion of the sealed connector 2 to hermetically connecting with the sealed connector 2. The sidewall of the outer needle tube 4 includes a first through-hole 9 and a second through-hole 10 respectively disposed above and under the sealing layer 8. The first through-hole 9 is connected with the tube lumen of the outer needle tube 4 and the second through-hole 10 is connected with a tube lumen of the inner needle 1.

[0028] FIG. 5 is an illustrative view of pressurizing on the headspace vial 11 according to one embodiment.

[0029] As is understood by a person skilled in the art, the foregoing preferred embodiments of the present invention are illustrative rather than limiting of the present invention. It is intended that they cover various modifications and similar arrangements be included within the spirit and scope of the present invention, the scope of which should be accorded the broadest interpretation so as to encompass all such modifications and similar structures.