US3906930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blood taking device
Assignee: Individual
•
Filing: 1973-03-23
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Granted: 1975-09-23
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Expires: 1993-03-23
Abstract
Abstract An improved blood-taking device of the type wherein a hypodermic needle is inserted into a blood vessel and one or more evacuated containers in succession are connected to the needle for collecting blood samples has two valves therein. The first valve closes the proximal end of the needle section when a container is not connected thereto, and the second valve makes it possible to control the difference of pressure utilized for drawing blood from a subject. The second valve can be closed rapidly in the event it is discovered that the needle lies in tissue exterior to a blood vessel rather than in a blood vessel itself, thereby preventing extravasation and hematoma.
Inventors
- 👤 Dr Luis A Guerra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:56
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61B; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/15003; A61B5/150206; A61B5/150221; A61B5/150351; A61B5/150374; A61B5/150381; A61B5/150389; A61B5/150473; A61B5/150496; A61B5/150732; A61B5/150992; A61B5/153; A61B5/154; A61M5/00; A61M5/178; A61M5/31; A61M5/32; A61M5/34; A61M2005/341; A61M2005/342; A61M5/346
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
217 words
An improvement in a blood-taking device for taking blood from a blood vessel, wherein said improvement comprises a cannulacontaining portion and a container portion, said cannulacontaining portion comprising a cannula having a sharp distal end and a proximal end, a support section having a passage therethrough, the distal end of said passage tightly receiving the proximal end of said cannula, first valve means seated in the proximal end of said passage for closing same, said support section having an aperture therein connecting with said passage, said first valve means normally closing the connection between said aperture and said passage, said container portion comprising an evacuable container having a moutn, a stopper in said mouth, tube means having a proximal end passing through said stopper and a distal end removably connected with said aperture in said support section to form a tight connection between said tube means and said support section at said aperture therein, and operating means on the distal end of said tube means for opening said first valve means and thereby connecting said apErture with said passage when said tube means is connected to said support section, said stopper being affixed to said container for movement therewith relative to said tube means and fitting sufficiently tightly to said mouth to prevent flow of air therebetween.
Claim 2
Dependent Claim
217 words
An improvement in a blood-taking device for taking blood from a blood vessel, wherein said improvement comprises a cannulacontaining portion and a container portion, said cannulacontaining portion comprising a cannula having a sharp distal end and a proximal end, a support section having a passage therethrough, the distal end of said passage tightly receiving the proximal end of said cannula, first valve means seated in the proximal end of said passage for closing same, said support section having an aperture therein connecting with said passage, said first valve means normally closing the connection between said aperture and said passage, said container portion comprising an evacuable container having a moutn, a stopper in said mouth, tube means having a proximal end passing through said stopper and a distal end removably connected with said aperture in said support section to form a tight connection between said tube means and said support section at said aperture therein, and operating means on the distal end of said tube means for opening said first valve means and thereby connecting said apErture with said passage when said tube means is connected to said support section, said stopper being affixed to said container for movement therewith relative to said tube means and fitting sufficiently tightly to said mouth to prevent flow of air therebetween.
Claim 3
Dependent Claim
45 words
The improvement as defined in claim 1, wherein said first valve means comprises a flexible hollow plug seated in and closing said proximal passage end, said plug extending across and completely blocking said aperture when said tube means is not connected to said support section.
Claim 4
Dependent Claim
59 words
The improvement as defined in claim 2, wherein said operating means on said tube is a lip extending from the distal end of said tube and so disposed as to displace the portion of said hollow flexible plug blocking said aperture, thereby providing connection to said passage for the flow of blood through said support section into said tube.
Claim 5
Dependent Claim
22 words
The improvement as defined in claim 2, wherein the axis of said aperture is essentially perpendicular to the axis of said cannula.
Claim 6
Dependent Claim
28 words
The improvement as defined in claim 1, wherein said aperture is socket-formed and the distal end of said tube is adapted to fit tightly within said socket-shaped aperture.
Claim 7
Dependent Claim
59 words
The improvement as defined in claim 1, wherein said support section has thereon a projection which can be placed proximate the surface into which said cannula is to be inserted, thereby establishing the angle at which said cannula is inserted into said surface and holding said support section away from said surface and making said support section readily graspable.
Claim 8
Dependent Claim
124 words
The improvement as defined in claim 1, wherein said stopper has an axial channel therethrough, and said tube means fits within said channel sufficiently tightly to prevent flow of fluid between said tube means and said channel, said tube means being sealed at the proximal end thereof and having an opening in the side wall thereof proximate the proximal end thereof, said container being axially movable relative to the proximal end of said tube means by an amount sufficient so that said opening in said tube means may be within said container thereby establishing connection between said tube and said vessel, or within said channel in said stopper thereby sealing said container against possible entry of air or liquid thereinto from said tube means.
Claim 9
Dependent Claim
57 words
The improvement as defined in claim 7, wherein the distal end of said channel in said stopper and the exterior of the proximal end of said tube means are correspondingly threaded so that gradual making and breaking of connection between said tube means and said container may be effected by rotation of said container about said tube.
Claim 10
Dependent Claim
40 words
The improvement as defined in claim 7, wherein said tube means has protrusions thereon on either side of said stopper, said protrusions serving as stops to limit the axial excursion of said container and stopper relative to said tube means.
Claim 11
Dependent Claim
20 words
The improvement as defined in claim 7, wherein said tube means has a right-angled elbow therein exterior to said stopper.
Claim 12
Dependent Claim
34 words
The improvement as defined in claim 7, wherein said tube means has at its distal end a projecting lip suitable for opening said valve means on insertion of said tube means into said aperture.
Claim 13
Dependent Claim
23 words
The improvement as defined in claim 7, wherein the distal end of said tube means is suitably shaped for fitting within a socket.
Claim 14
Dependent Claim
48 words
The improvement as defined in claim 1 wherein said first valve means is a hollow plug of a material through which a hypodermic needle may be passed for injecting fluid into a patient once a puncture in the surface of a patient has been made for withdrawing blood.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |