Cardioplegia three-way double stopcock
First Claim
1. A three-way double stopcock comprising:
- (a) a hollow valve body comprising;
(i) a first cylindrical shell;
(ii) a second cylindrical shell disposed coaxially with said first cylindrical shell at a first end thereof; and
(iii) a sleeve encircling said first end of said first cylindrical shell and the end of said second cylindrical shell opposed thereto to maintain a fixed spacial relationship between said first and said second cylindrical shells;
(b) a first set of three fluid ports formed through the walls of said first cylindrical shell communicating with the interior thereof;
(c) a second set of three fluid ports formed through the walls of said second cylindrical shell communicating with the interior thereof; and
(d) fluid communication control means for simultaneously regulating fluid communication among said first set of fluid ports and among said second set of fluid ports.
4 Assignments
0 Petitions
Accused Products
Abstract
A three-way double stopcock and associated tubing is disclosed with which to connect both a cardioplegia solution source and a pressure monitor for the solution selectively and alternatively to either an antegrade cardioplegia catheter or a retrograde cardioplegia catheter. The stopcock includes a hollow valve body with three solution infusion ports communicating to the interior thereof in a coplanar arrangement at a first longitudinal point on the valve body. Three cardioplegia pressure monitoring ports also communicate through the valve body to the interior thereof at a second longitudinal position distinct from the first. Mounted in the valve body is a cylindrical valve core selectively rotatable about the longitudinal axis thereof between a first position in which the cardioplegia solution source and the pressure monitor are coupled to the antegrade cannula and a second position in which the cardioplegia solution source and the pressure monitor are coupled to the retrograde catheter. Formed in the valve core are a set of valving passageways for communicating with selective of the infusion ports and a set of valving passageways for communicating with selective of the pressure monitoring ports.
92 Citations
42 Claims
-
1. A three-way double stopcock comprising:
-
(a) a hollow valve body comprising; (i) a first cylindrical shell; (ii) a second cylindrical shell disposed coaxially with said first cylindrical shell at a first end thereof; and (iii) a sleeve encircling said first end of said first cylindrical shell and the end of said second cylindrical shell opposed thereto to maintain a fixed spacial relationship between said first and said second cylindrical shells; (b) a first set of three fluid ports formed through the walls of said first cylindrical shell communicating with the interior thereof; (c) a second set of three fluid ports formed through the walls of said second cylindrical shell communicating with the interior thereof; and (d) fluid communication control means for simultaneously regulating fluid communication among said first set of fluid ports and among said second set of fluid ports. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A cardioplegia stopcock for use alternately and selectively in an antegrade cardioplegia procedure and in a retrograde cardioplegia procedure to infuse and to pressure monitor in those procedures, the stopcock comprising:
-
(a) a hollow valve body comprising; (i) a first cylindrical shell; (ii) a second cylindrical shell disposed coaxially with said first cylindrical shell at a first end thereof; and (iii) a sleeve encircling said first end of said first cylindrical shell and the end of said second cylindrical shell opposed thereto to maintain a fixed spacial relationship between said first and second shells; (b) three cardioplegia solution infusion ports communicating through the walls of said first cylindrical shell to the interior thereof; (c) three cardioplegia pressure monitoring ports communicating through the walls of said second cylindrical shell to the interior thereof; and (d) fluid communication control means for simultaneously regulating fluid communication among said infusion ports and among said pressure monitoring ports.
-
-
15. A three-way double stopcock comprising:
-
(a) a hollow valve body comprising; (i) a first cylindrical shell; (ii) a second cylindrical shell disposed coaxially with said first cylindrical shell at a first end thereof; and (iii) a sleeve encircling said first end of said first cylindrical shell and the end of said second cylindrical shell opposed thereto to maintain a fixed spacial relationship between said first and said second cylindrical shells; (b) a first set of three fluid ports communicating through the walls of said first cylindrical shell to the interior thereof; (c) a second set of three fluid ports communicating through the walls of said second cylindrical shell to the interior thereof, the diameter of said second set of fluid ports being substantially smaller than the diameter of said first set of fluid ports; and (d) a cylindrical valve core mounted in said valve body for selective rotation about the longitudinal axis thereof between a first position in which a first and a second fluid port are placed in fluid communication in each of said first and second sets of fluid ports and a second position in which said second and a third fluid port are placed in fluid communication in each of said first and second sets of fluid ports. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
-
-
28. A cardioplegia stopcock for use alternately and selectively in an antegrade cardioplegia procedure and in a retrograde cardioplegia procedure to infuse and to pressure monitor in those procedures, the stopcock comprising:
-
(a) a hollow valve body comprising; (i) a first cylindrical shell; (ii) a second cylindrical shell disposed coaxially with said first cylindrical shell at a first end thereof; and (iii) a sleeve encircling said first end of said first cylindrical shell and the end of said second cylindrical shell opposed thereto to maintain a fixed spacial relationship between said first and second shells; (b) three cardioplegia solution infusion ports communicating through the walls of said first cylindrical shell to the interior thereof; (c) three cardioplegia pressure monitoring ports communicating through the walls of said second cylindrical shell to the interior thereof; and (d) a cylindrical valve core mounted in said valve body for selective rotation about the longitudinal axis thereof between a first position in which a first and a second of said infusion ports and a first and a second of said pressure monitoring ports are placed in fluid communication, and a second position in which said second and a third of said infusion ports and said second and a third of said pressure monitoring ports are placed in fluid communication.
-
-
29. A system for interconnecting both a source of cardioplegia solution and a pressure monitor for cardioplegia procedures selectively and alternately to an antegrade cardioplegia cannula having a pressure sensing feed line and to a retrograde cardioplegia catheter having a pressure sensing feed line, the system comprising:
-
(a) a stopcock comprising; (i) a hollow valve body comprising; (A) a first cylindrical shell; (B) a second cylindrical shell disposed coaxially with said first cylindrical shell at a first end thereof; and (C) a sleeve encircling said first end of said first cylindrical shell and the end of said second cylindrical shell opposed thereto to maintain a fixed spacial relationship between said first and said second cylindrical shells; (ii) first, second, and third cardioplegia solution infusion ports communicating through the walls of said first cylindrical shell to the interior thereof; (iii) first, second, and third cardioplegia pressure monitoring ports communicating through the walls of said second cylindrical shell to the interior thereof; and (iv) a cylindrical valve core mounted in said valve body for selective rotation about the longitudinal axis thereof between a first position in which a first and a second of said infusion ports and a first and a second of said pressure monitoring ports are placed in fluid communication, and a second position in which said second and a third of said infusion ports and said second and a third of said pressure monitoring ports are placed in fluid communication; (b) first pressure tubing secured to said first pressure monitoring port for placing said first pressure monitoring port in communication with the pressure sensing feed line of the antegrade cardioplegia catheter; (c) second pressure tubing secured to said second pressure monitoring port for placing said second pressure monitoring port in communication with the pressure monitor; (d) third pressure tubing secured to said third pressure monitoring port for placing said third pressure monitoring port in communication with the pressure sensing feed line of the retrograde cardioplegia cannula; (e) first infusion tubing secured to said first infusion port for placing said first infusion port in fluid communication with said antegrade cardioplegia catheter; (f) second infusion tubing secured to said second infusion port for placing said second infusion port in fluid communication with the source of cardioplegia solution; (g) third infusion tubing secured to said third solution infusion port for placing said third infusion port in fluid communication with said retrograde cardioplegia cannula; and (h) actuation means for selectively moving said cylindrical valve core between said first and said second positions thereof to alternately perform antegrade and retrograde cardioplegia procedures using the pressure monitor the and source of cardioplegia solution. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
-
-
42. A method for conducting a cardioplegia procedure comprising the steps of:
-
(a) installing in a patient an antigrade cardioplegia cannula having a pressure sensing feed line; (b) installing in a patient a retrograde cardioplegia catheter having a pressure sensing feed line; (c) providing a three-way double stopcock, said stopcock comprising; (i) a hollow valve body; (ii) first, second, and third cardioplegia solution infusion ports communicating through the walls of said valve body to the interior thereof; (iii) first, second, and third cardioplegia pressure monitoring ports communicating through the walls of said valve body to the interior thereof; (iv) a cylindrical valve core mounted in said valve body for selective rotation about the longitudinal axis thereof between a first position in which a first and a second of said infusion ports and a first and a second of said pressure monitoring ports are placed in fluid communication, and a second position in which said second and a third of said infusion ports and said second and a third of said pressure monitoring ports are placed in fluid communication; and (v) actuation means for selectively moving said cylindrical valve core between said first and second positions thereof to alternatively perform antigrade and retrograde cardioplegia procedures using the pressure monitor and the source of cardioplegia solution; (d) placing said first pressure monitoring port in communication with the pressure sensing feed line of the antigrade cardioplegia catheter; (e) placing said second pressure monitoring port in communication with a pressure monitor; (f) placing said third pressure monitoring port in communication with the pressure sensing feed line of the retrograde cardioplegia cannula; (g) placing said first infusion port in fluid communication with said antigrade cardioplegia catheter; (h) placing said second infusion port in fluid communication with a source of cardioplegia solution; (i) placing said third infusion port in fluid communication with said retrograde cardioplegia cannula; and (j) alternately operating said actuation means to move said cylindrical valve core between said first and second positions thereof.
-
Specification