US5423769A
Expired / Lapsed
US
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Cardioplegia management system
Assignee: DLP Inc
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Filing: 1993-02-09
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Granted: 1995-06-13
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Expires: 2013-02-09
Abstract
Abstract A cardioplegia management system comprises an inlet tube adapted for connection to a source of cardioplegic fluid, and at least two supply tubes extending from the inlet tube and in communication therewith, whereby fluid passing through the inlet will be directed to the supply tubes. The system also includes a base, and clamps associated with the supply tubes. Each of the clamps is mounted on the base in a position to selectively clamp and unclamp its respective supply tube, thereby selectively blocking or allowing flow of fluid through the supply tubes.
Inventors
- 👤 Kenneth R. Jonkman
- 👤 James H. DeVries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:17
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/36; A61M1/3621; A61M1/3664; A61M39/00; A61M39/22; A61M39/28; A61M39/284; A61M2205/00; A61M2205/36; A61M2205/3606; A61M5/00; A61M5/14; A61M5/168; A61M5/16804; A61M5/16827
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
107 words
A cardioplegia distribution system comprising a clamp base, and a plurality of manually actuable occluding clamps for selective control of flow in a plurality of cardioplegia supply tubes associated with the clamps, the base comprising a planar panel having a rear bearing surface and a front mounting surface, each clamp having a digitally engageable closure engagement surface, each clamp being mounted to the front mounting surface and oriented so that digital pressure applied to the closure engagement surface toward the panel closes the clamp, whereby when the rear bearing surface abuts an independent support surface, the clamps can be closed with one finger without grasping the base.
Claim 2
Dependent Claim
107 words
A cardioplegia distribution system comprising a clamp base, and a plurality of manually actuable occluding clamps for selective control of flow in a plurality of cardioplegia supply tubes associated with the clamps, the base comprising a planar panel having a rear bearing surface and a front mounting surface, each clamp having a digitally engageable closure engagement surface, each clamp being mounted to the front mounting surface and oriented so that digital pressure applied to the closure engagement surface toward the panel closes the clamp, whereby when the rear bearing surface abuts an independent support surface, the clamps can be closed with one finger without grasping the base.
Claim 3
Dependent Claim
22 words
A cardioplegia management system according to claim 1, wherein the base includes means to facilitate securing the base from movement during surgery.
Claim 4
Dependent Claim
22 words
A cardioplegia management system according to claim 2, wherein the base securing means comprises at least one aperture extending through the base.
Claim 5
Dependent Claim
28 words
A cardioplegia management system according to claim 2, wherein the base securing means comprises a pair of apertures extending through the base and disposed at opposite ends thereof.
Claim 6
Dependent Claim
26 words
A cardioplegia management system according to claim 1, wherein the clamp base includes guard means for preventing inadvertent actuation of clamps mounted by the clamp base.
Claim 7
Dependent Claim
55 words
A cardioplegia management system according to claim 1, including a manifold comprising a distribution tube having at least one inlet adapted for connection with an inlet tube and a plurality of outlet branches each adapted to be connected with a supply tube, and means for securing the manifold against movement relative to the clamp base.
Claim 8
Dependent Claim
139 words
A cardioplegia distribution system comprising a clamp base, and a plurality of manually actuable occluding clamps mounted on the base for selectively controlling flow in a plurality of cardioplegia supply tubes associated with the clamps, each of the clamps comprising a body formed of resilient material and having: means for receiving a length of one of the supply tubes; clamping means carried by the body and disposed to be juxtaposed to said length of one of the supply tubes; detent means for releasably retaining the body in a clamping condition; the clamping means being adapted to clampingly engage said length of one of the supply tubes when the body is in said clamping condition; and engagement means for placing the body into said clamping condition in response to digital pressure applied against the engagement means toward the clamp base.
Claim 9
Dependent Claim
139 words
A cardioplegia distribution system comprising a clamp base, and a plurality of manually actuable occluding clamps mounted on the base for selectively controlling flow in a plurality of cardioplegia supply tubes associated with the clamps, each of the clamps comprising a body formed of resilient material and having: means for receiving a length of one of the supply tubes; clamping means carried by the body and disposed to be juxtaposed to said length of one of the supply tubes; detent means for releasably retaining the body in a clamping condition; the clamping means being adapted to clampingly engage said length of one of the supply tubes when the body is in said clamping condition; and engagement means for placing the body into said clamping condition in response to digital pressure applied against the engagement means toward the clamp base.
Claim 10
Dependent Claim
38 words
A cardioplegia management system according to claim 7, wherein the clamp base includes a plurality of wells formed therein, each of the wells being shaped and dimensioned to receive the body of one of the clamps snugly therein.
Claim 11
Dependent Claim
30 words
A cardioplegia management system according to claim 8, wherein the claim base includes means for retaining the body of each of the clamps in a respective one of the wells.
Claim 12
Dependent Claim
36 words
A cardioplegia management system according to claim 9, wherein the clamp retaining means comprises at least one detent extending inwardly of the well and adapted to engage the body of a clamp received in the well.
Claim 13
Dependent Claim
53 words
A cardioplegia management system according to claim 7, wherein each of the clamps includes a tab extending outwardly from the clamp body adjacent to the detent means in a disposition whereby digital pressure applied thereto tends to urge the detent means in a direction to release the clamp body from the clamping condition.
Claim 14
Dependent Claim
28 words
A cardioplegia management system according to claim 7, wherein each of the clamps is a color different from the color of at least one other of the clamps.
Claim 15
Dependent Claim
36 words
A cardioplegia management system according to claim 12, wherein the color of each of the clamps is selected to coincide with the color of an element of the supply tube to be received in the clamp.
Claim 16
Dependent Claim
40 words
A cardioplegia management system according to claim 7, wherein the clamp base includes guard means comprising at least one ridge extending outwardly from the base adjacent to at least one of the clamps for preventing inadvertent actuation of the clamp.
Claim 17
Dependent Claim
55 words
A cardioplegia management system according to claim 7, including a manifold comprising a distribution tube having at least one inlet adapted for connection with an inlet tube and a plurality of outlet branches each adapted to be connected with a supply tube, and means for securing the manifold against movement relative to the clamp base.
Claim 18
Dependent Claim
23 words
A cardioplegia management system according to claim 7, wherein the clamp base includes means to facilitate securing the base from movement during surgery.
Claim 19
Dependent Claim
22 words
A cardioplegia management system according to claim 16, wherein the base securing means comprises at least one aperture extending through the base.
Claim 20
Dependent Claim
29 words
A cardioplegia management system according to claim 16, wherein the base securing means comprises a pair of elongate apertures extending through the base and disposed at opposite ends thereof.
Claim 21
Dependent Claim
37 words
A cardioplegia distribution system according to claim 1 wherein each of the clamps further comprises a digitally engageable opening engagement surface oriented so that digital pressure against the opening engagement surface toward the panel opens the clamp.
Claim 22
Dependent Claim
89 words
A cardioplegia distribution system according to claim 1 wherein each of the clamps comprises a first occluding member and a second occluding member, the occluding members being disposed on opposite sides of one of said supply tubes, means between the occluding members biasing the occluding members away from each other, and a detent means on one of the occluding members for holding said one occluding member adjacent to the other of said occluding members and the supply tube therebetween for occluding the supply tube disposed between said occluding members.
Claim 23
Dependent Claim
35 words
A cardioplegia distribution system according to claim 20 wherein the first occluding member is mounted to the front mounting surface of the base and the closure engagement surface is provided on the second occluding member.
Claim 24
Dependent Claim
34 words
A cardioplegia distribution system according to claim 21 further comprising a well in said planar panel opening at the front surface thereof, the well being shaped to receive the first occluding member securely therewithin.
Claim 25
Dependent Claim
34 words
A cardioplegia distribution system according to claim 22 wherein the base further comprises a catch extending toward the well and abutting the first occluding member to hold the first occluding member in the well.
Claim 26
Dependent Claim
110 words
A cardioplegia distribution system according to claim 21 wherein each of the detent means comprises a pivotable portion of the respective first occluding member and a lip on the pivotable portion abutting the respective second occluding member to hold the occluding members adjacent to each other and the supply tube therebetween, and wherein the first occluding member further comprises a digitally engageable opening engagement surface comprising a tab on the pivotable portion of the first occluding member adjacent to the detent means and oriented to pivot the pivotable portion and the tab away from the second occluding member under a force applied against the tab toward the front mounting surface.
Claim 27
Dependent Claim
55 words
A cardioplegia distribution system according to claim 21 further comprising a plurality of guard ridges adjacent to the clamps and extending outwardly from the front mounting surface a distance greater than that by which the clamps extend outwardly from the front mounting surface, whereby the guard ridges protect the clamps against accidental opening and closure.
Claim 28
Dependent Claim
30 words
A cardioplegia distribution system according to claim 25 wherein the clamps are arranged in side-by-side relationship and the ridges are oriented between the clamps and laterally adjacent to the clamps.
Claim 29
Dependent Claim
104 words
A cardioplegia distribution system comprising a planar clamp base having a rear bearing surface, a front mounting surface, and means for mounting a plurality of manually actuable occluding clamps each having a digitally engageable closure engagement surface for selective control of flow in a respective one of a plurality of cardioplegia supply tubes associated with the clamps, the mounting means orienting the clamps so that digital pressure applied against the closure engagement surface toward the panel acts to close the clamp, whereby with the rear bearing surface abutting an independent support surface, the clamps can be closed with one finger without grasping the base.
Claim 30
Dependent Claim
104 words
A cardioplegia distribution system comprising a planar clamp base having a rear bearing surface, a front mounting surface, and means for mounting a plurality of manually actuable occluding clamps each having a digitally engageable closure engagement surface for selective control of flow in a respective one of a plurality of cardioplegia supply tubes associated with the clamps, the mounting means orienting the clamps so that digital pressure applied against the closure engagement surface toward the panel acts to close the clamp, whereby with the rear bearing surface abutting an independent support surface, the clamps can be closed with one finger without grasping the base.
Claim 31
Dependent Claim
34 words
A cardioplegia distribution system according to claim 27 wherein the mounting means for each clamp comprises a rectangularly shaped well in the base having spaced side walls disposed to frictionally engage a clamp therebetween.
Claim 32
Dependent Claim
43 words
A cardioplegia distribution system according to claim 27 wherein the mounting means for each clamp further comprises a catch extending from the base toward the well, the catch being shaped to abut and hold a portion of a clamp received within the well.
Claim 33
Dependent Claim
29 words
A cardioplegia distribution system according to claim 28 further comprising a mounting aperture for receiving a portion of a surgical drape to secure the clamp base to the drape.
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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) | 1998-06-12 | 1998-12-12 | 1999-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-12 | 2002-12-12 | 2003-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-12 | 2006-12-12 | 2007-06-13 | $7700.00 | Window Closed / Lapsed |