Patent US4628929A successfully refreshed from Google Patents.
US4628929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable blade bleeding time device
Assignee: Baxter International Inc
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Filing: 1985-08-16
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Granted: 1986-12-16
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Expires: 2005-08-16
Abstract
Abstract A disposable device for making an incision in the skin of a human or animal by a retracting blade member that selfretracts after the incision is completed for bleeding time determinations, is disclosed. The device comprises a housing, a hammer mechanism pivotably positioned within the housing and including a cam surface, and a selfretracting shuttle supported within the housing and including a cam follower surface, the shuttle operative to travel in a vertical direction by (i) the movement of the cam surface along the cam follower surface and (ii) the force exerted on the shuttle by a first spring extending from the shuttle. Secured on the shuttle is a cutting surface {(blade(s)} operative to move out of the housing to make the incision and then selfretract into the housing. A second spring is operative to exert a force on the hammer to cause it (i) to move along the cam follower surface to cause the shuttle to travel downwardly thereby causing the blade to travel out of the housing and make the incision, and (ii) to move into a locked position to thereby secure the blade within the housing after the blade has retracted back into the housing due to force exerted by the first spring.
Inventors
- 👤 Franklin S. Intengan
- 👤 Zindel H. Heller
- 👤 Fred K. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:52
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3209; A61B17/32093; A61B5/00; A61B5/15; A61B5/150007; A61B5/150015; A61B5/150022; A61B5/150374; A61B5/150381; A61B5/150442; A61B5/150458; A61B5/150885; A61B5/150916; A61B5/151; A61B5/15101; A61B5/15103; A61B5/15107; A61B5/15113; A61B5/15115; A61B5/15117; A61B5/15126; A61B5/15128; A61B5/15142; A61B5/15144; A61B17/3211; A61B2017/32113
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
216 words
A disposable device for making an incision in the skin such as in a human by a retracting blade member that selfretracts after the incision is completed for bleeding time determinations comprising: a housing which inclues a blade opening; hammer means pivotably positioned within the housing and including a cam surface; selfretracting shuttle means supported within the housing and including a cam follower surface, the shuttle means operative to travel towards the skin by (i) the movement of the cam surface along the cam follower surface and (ii) the biasing force exerted on the shuttle means by a first spring means extending from the shuttle means; blade means secured to the shuttle means and operative to extend through said opening out of said housing to make the incision and then selfretract into the housing; and second spring means operative to exert a force on the hammer means to cause it (i) to travel along the cam follower surface to cause the shuttle means to travel towards said opening thereby causing the blade to travel out of the housing and make the incision and, (ii) to travel into a locked position to thereby secure the blade within the housing after the blade has retracted back into the housing due to force exerted by the first spring means.
Claim 2
Dependent Claim
216 words
A disposable device for making an incision in the skin such as in a human by a retracting blade member that selfretracts after the incision is completed for bleeding time determinations comprising: a housing which inclues a blade opening; hammer means pivotably positioned within the housing and including a cam surface; selfretracting shuttle means supported within the housing and including a cam follower surface, the shuttle means operative to travel towards the skin by (i) the movement of the cam surface along the cam follower surface and (ii) the biasing force exerted on the shuttle means by a first spring means extending from the shuttle means; blade means secured to the shuttle means and operative to extend through said opening out of said housing to make the incision and then selfretract into the housing; and second spring means operative to exert a force on the hammer means to cause it (i) to travel along the cam follower surface to cause the shuttle means to travel towards said opening thereby causing the blade to travel out of the housing and make the incision and, (ii) to travel into a locked position to thereby secure the blade within the housing after the blade has retracted back into the housing due to force exerted by the first spring means.
Claim 3
Dependent Claim
24 words
The device according to claim 1 further comprising a trigger means located on said hammer means for allowing a user to actuate the device.
Claim 4
Dependent Claim
33 words
The device according to claim 2 wherein said trigger device is actuated by a force exerted thereon releasing said hammer means to be driven along said cam follower surface by said spring means.
Claim 5
Dependent Claim
37 words
The device according to claim 1 wherein said hammer means includes a notch positioned thereon capable of causing said hammer means to lock onto said shuttle means after said cam surface travels along said cam follower surface.
Claim 6
Dependent Claim
18 words
The device according to claim 1 further comprising a spring guide means for positioning said second spring means.
Claim 7
Dependent Claim
29 words
The device according to claim 5 wherein said spring guide means includes a head member operative to transfer the force exerted by said second spring to said hammer means.
Claim 8
Dependent Claim
17 words
The device according to claim 6 wherein said head member is pivotably mounted to said hammer means.
Claim 9
Dependent Claim
28 words
The device according to claim 1 wherein said shuttle means includes a plurality of support members operative to position and support said blade means on said shuttle means.
Claim 10
Dependent Claim
22 words
The device according to claim 8 wherein said shuttle means, first spring means and support members are formed of an integral element.
Claim 11
Dependent Claim
28 words
The device according to claim 8 wherein said blade means includes an opening for inserting a support member therein and securing said blade means to said shuttle means.
Claim 12
Dependent Claim
22 words
The device according to claim 8 wherein said support member is ultrasonically staked to secure said blade means to said shuttle means.
Claim 13
Dependent Claim
55 words
The device according to claim 1 wherein said first spring means is a leaf spring extending at one end from said shuttle means and supported at its other end by said housing whereby movement of said shuttle means towards the skin causes the leaf spring to exert an upward biasing force on said shuttle means.
Claim 14
Dependent Claim
24 words
The device according to claim 1 further comprising a shielding means operative to be secured to said housing and protectively cover said trigger means.
Claim 15
Dependent Claim
29 words
The device according to claim 1 further comprising the stop means positioned on said housing and operative to limit the downward movement of said shuttle means towards the skin.
Claim 16
Dependent Claim
13 words
The device according to claim 1 wherein said blade means comprises one blade.
Claim 17
Dependent Claim
13 words
The device according to claim 1 wherein said blade means comprises two blades.
Claim 18
Dependent Claim
37 words
The device according to claim 16 wherein said blades are positioned on said shuttle means such that each of said incisions on said skin by each of said blades begins to bleed at substantially the same time.
Claim 19
Dependent Claim
32 words
The device according to claim 1 wherein said blade means is positioned on said shuttle means such that the length of the blade strikes said skin at an angle to said skin.
Claim 20
Dependent Claim
18 words
The device according to claim 18 wherein said angle is about 5 degrees plus or minus 1/2 degree.
Claim 21
Dependent Claim
14 words
The device according to claim 18 wherein said blade means comprises one blade member.
Claim 22
Dependent Claim
24 words
The device according to claim 18 wherein said blade means comprises two blades, each blade striking said skin at an angle to said skin.
Claim 23
Dependent Claim
15 words
The device according to claim 21 wherein the blades are mirror images of each other.
Claim 24
Dependent Claim
26 words
The device according to claim 21 wherein each of said blades is at an angle of 5 degrees plus or minus 1/2 degree to said skin.
Claim 25
Dependent Claim
37 words
The device according to claim 21 wherein said blades are positioned on said shuttle means such that each of said incisions on said skin by each of said blades begins to bleed at substantially the same time.
Claim 26
Dependent Claim
244 words
A disposable device for making an incision in the skin such as in a human by a retracting blade member that selfretracts after the incision is completed for bleeding time determinations comprising: a housing which includes a blade opening; hammer means pivotably positioned within the housing and including a cam surface; selfretracting shuttle means supported within the housing and including a cam follower surface, the shuttle means operative to travel towards the skin by (i) the movement of the cam surface along the cam follower surface and (ii) the biasing force exerted on the shuttle means by a first spring means extending from the shuttle means; at least one blade secured to the shuttle means and operative to extend through said opening out of said housing to make at least one incision and then selfretract into the housing, each blade positioned on the shuttle means such that the length of the blade strikes the skin at an angle to the skin; and second spring means operative to exert a force on the hammer means to cause it (i) to travel along the cam follower surface to cause the shuttle means to travel towards said opening thereby causing each blade to travel out of the housing and make its incision, and (ii) to travel into a locked position to thereby secure each blade within the housing after each blade has retracted back into the housing due to the force exerted by the first spring means.
Claim 27
Dependent Claim
244 words
A disposable device for making an incision in the skin such as in a human by a retracting blade member that selfretracts after the incision is completed for bleeding time determinations comprising: a housing which includes a blade opening; hammer means pivotably positioned within the housing and including a cam surface; selfretracting shuttle means supported within the housing and including a cam follower surface, the shuttle means operative to travel towards the skin by (i) the movement of the cam surface along the cam follower surface and (ii) the biasing force exerted on the shuttle means by a first spring means extending from the shuttle means; at least one blade secured to the shuttle means and operative to extend through said opening out of said housing to make at least one incision and then selfretract into the housing, each blade positioned on the shuttle means such that the length of the blade strikes the skin at an angle to the skin; and second spring means operative to exert a force on the hammer means to cause it (i) to travel along the cam follower surface to cause the shuttle means to travel towards said opening thereby causing each blade to travel out of the housing and make its incision, and (ii) to travel into a locked position to thereby secure each blade within the housing after each blade has retracted back into the housing due to the force exerted by the first spring means.
Claim 28
Dependent Claim
18 words
The device according to claim 25 wherein said angle is about 5 degrees plus or minus 1/2 degree.
Claim 29
Dependent Claim
16 words
The device according to claim 25 wherein there are two blades secured to the shuttle means.
Claim 30
Dependent Claim
15 words
The device according to claim 27 wherein the blades are mirror images of each other.
Claim 31
Dependent Claim
36 words
The device according to claim 27 wherein said blades are positioned on said shuttle means such that each of said incisions on said skin by each of said begin to bleed at substantially the same time.
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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) | 1989-12-15 | 1990-06-16 | 1990-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-12-15 | 1994-06-16 | 1994-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-12-15 | 1998-06-16 | 1998-12-16 | $7700.00 | Window Closed / Lapsed |