EP0106290A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Evacuated blood collecting device
Assignee: Terumo Corp
•
Filing: 1983-10-07
•
Granted: —
•
Expires: 2003-10-07
Abstract
Abstract An evacuated blood collecting device comprising a cylindrical member having one end thereof closed and the other end opened and a puncturable stopper member serving to close tightly the open end of the cylindrical member, which evacuated blood collecting device whereby the device is comprised to be under condition that the permeation coefficient of the gas inside the device to at least one of the component members of the device being higher than that of the gas around the device and the device keeping the interior thereof under reduced pressure relative to the ambient gas in proportion to the blood sampling volume.
Inventors
- 👤 Masaaki Kasai
- 👤 Yoshimitsu Asada
- 👤 Kenji Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 23:14
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150206; A61B5/150305; A61B5/150015; A61B5/15003; A61B5/150221; A61B5/150351; A61B5/150374; A61B5/150381; A61B5/150389; A61B5/150473; A61B5/150496; A61B5/150534; A61B5/150572; A61B5/150732; A61B5/153; A61B5/154; A61B5/155
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
105 words
An evacuated blood collecting device comprising a cylindrical member having one end thereof closed and the other end opened and a puncturable stopper member serving to close tightly the open end of the cylindrical member, which evacuated blood collecting device is characterized in that the device is comprised to be under condition that the permeation coefficient of the gas inside the device to at least one of the component members of the device being higher than that of the gas around the device and the device keeping the interior thereof under reduced pressure relative to the ambient gas in proportion to the blood sampling volume.
Claim 2
Dependent Claim
105 words
An evacuated blood collecting device comprising a cylindrical member having one end thereof closed and the other end opened and a puncturable stopper member serving to close tightly the open end of the cylindrical member, which evacuated blood collecting device is characterized in that the device is comprised to be under condition that the permeation coefficient of the gas inside the device to at least one of the component members of the device being higher than that of the gas around the device and the device keeping the interior thereof under reduced pressure relative to the ambient gas in proportion to the blood sampling volume.
Claim 3
Dependent Claim
44 words
An evacuated blood collecting device according to Claim 1, wherein said evacuated blood collecting device has sealed therein a gas to which at least one of the component members of said device exhibits a higher permeation coefficient than to the gas enveloping said device.
Claim 4
Dependent Claim
22 words
An evacuated blood collecting device according to Claim 2, wherein said evacuated blood collecting device is stowed in a tightly sealing container.
Claim 5
Dependent Claim
25 words
An evacuated blood collecting device according to Claim 2, wherein said evacuated blood collecting device is stowed with a deoxidizer in a tightly sealing container.
Claim 6
Dependent Claim
62 words
An evacuated blood collecting device according to Claim 2, wherein the permeation coefficient to the material of at least one of the component members of.said device is such that the permeation coefficient of the gas sealed in said device taken as A, and the permeation coefficient of the gas enveloping said device, taken as B, will satisfy the relationship 20B>A>l.O B .
Claim 7
Dependent Claim
64 words
An evacuated blood collecting device according to Claim 5, wherein the permeation coefficient to the material of at least one of the component members of said device exhibits gas permeation coefficients such that the permeation coefficient of the gas sealed in said device, taken as A, and the permeation coefficient of the gas enveloping said device, taken as B, will satisfy the relationship 10B>A>4B.
Claim 8
Dependent Claim
37 words
An evacuated blood collecting device according to Claim 5, wherein said gas sealed in said device is at least one gas selected from the group consisting of helium, argone, oxygen, carbon dioxide, carbon monoxide, ethane and propane.
Claim 9
Dependent Claim
21 words
An evacuated blood collecting device according to Claim 7, wherein said gas sealed in said device is argon or carbon dioxide.
Claim 10
Dependent Claim
39 words
An evacuated blood collecting device according to Claim 1, wherein said device is stowed with said deoxidizer in said tightly sealing container and said device has its inner space under reduced pressure relative to the gas enveloping said device.
Claim 11
Dependent Claim
19 words
An evacuated blood collecting device according to Claim 1, wherein the said cylindrical member is made of synthetic resin.
Claim 12
Dependent Claim
17 words
An evacuated blood collecting device according to Claim 10, wherein said synthetic resin is methyl methacrylate resin.
Claim 13
Dependent Claim
30 words
-12. An evacuated blood collecting device according to Claim 1, wherein said stopper member is made of a composition consisting of a thermoplastic elastomer, polyisobutylene and partially cross-linked butyl rubber.
Claim 14
Dependent Claim
29 words
An evacuated blood collecting device according to Claim 3, Claim 4 or Claim 9, wherein said tightly sealing container is made of synthetic resin possessing a gas barrier property.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.