Integrated blood donor tube stripper and crimping apparatus
A pair of gripping frame e hingedly connected together at one end thereof. Cooperating rollers are rotatably coupled to the gripping members adjacent the hinge therebetween. The rollers are positioned adjacent one another whereby a uniform space is created between the parallel, aligned surfaces of the rollers which are adapted to receive flexible fluid-filled tubing connected to a blood donor bag. When the gripping frame members are positioned adjacent one another, the aligned surfaces of the rollers will fully compress the surfaces of the tubing. Opposed crimping heads coupled to the gripping frame members are adapted to crush a securing clip disposed about the tubing thereby sealing the fluid-filled tubing when the heads are positioned adjacent one another.
1. Field of the Invention
The present invention generally relates to apparatus used to strip fluid from flexible plastic tubing and in particular to strip blood from tubing incorporated with a blood donor bag.
2. Description of the Prior Art
The prior art discloses system used to collect blood from a donor. The most common apparatus uses a plastic blood collecting and dispensing bag having flexible plastic tubing integral therewith which communicates with the interior of the bag. The integral flexible plastic tubing is provided with a hollow needle which is inserted into the vein of the donor thereby allowing blood to flow from the donor, through the interior of the plastic tubing and into the blood collecting and dispensing bag. After the blood is collected, the prior art discloses sealing the tube by means of a knot formed therein after which the needle is removed and discarded.
Prior to use of the collecting and dispensing bag, the bag is filled with an anticoagulant solution to prevent the donated blood from clotting or otherwise congeal. However, after filling the collecting and dispensing bag, the tubing between the needle and the bag will be filled with blood. Since the blood in the tubing has not been mixed with the anticoagulant solution in the bag, blood must be substantially stripped or removed from the tubing and mixed with the contents of the bag in order to prevent coagulation of blood in the tubing. The prior art does disclose apparatus for partially stripping the blood from the tubing, it is ineffective since it allows the blood to flow back into the tubing and, in many instances, sufficient unmixed blood remains in the tubing which will coagulate.
The present invention resolves the problems created by the inadequacies in the devices taught by the prior art. An objective of the present invention is to cause all blood in the tubing to be moved into the collecting and dispensing bag. To accomplish this objective, cooperating rollers are rotatably coupled to each of the hinged gripping frame members. A uniform gap is created between the roller surfaces thereof and, when urged along the tubing toward the collecting and dispensing bag, all blood within the interior passage of the tubing will be forced into the bag and thereby be mixed with the anticoagulating solution A pair of cooperating crimping heads are secured to the gripping frame members. The crimping heads that are adapted to crush sealing clips that are disposed about a segment of the tubing that has been purged of blood. After the crimping heads are activated and the sealing clip is crushed about the tubing closing the interior passage of the tubing, the outflow of blood will be precluded.
SUMMARY OF THE INVENTIONThe present invention provides an improved apparatus for substantially stripping fluids from a flexible plastic tubing used to transfer donated blood from a donor to a collecting and dispensing bag and sealing the tubing thereafter. A pair of gripping frame members are hingedly connected at one end thereof. A cylindrical roller is rotatably coupled to each of the gripping frame members adjacent the hinged end and are adapted to be cooperatively engaged with one another when the gripping frame members are positioned adjacent one another. The lateral edges and the cylindrical, perpendicular surface of each roller will, when engaged, define a restricted space that is less than the compressed thickness of the tubing from which blood is to be stripped. To strip the blood from the tubing, the tubing is placed between the peripheral surfaces of the rollers and the hinged gripping frame members placed adjacent one another. Once the tubing is compressed between the peripheral surfaces of the rollers, the present invention is urged toward the coupling between the tubing and the collecting and dispensing bag thereby stripping the blood from the tubing and forcing all blood in the tubing into the collecting and dispensing bag where it will be mixed with the anticoagulant solution.
In order to close off the tubing, crimping heads are secured to the gripping frame members in axial alignment with the axis of the roller coupled to the gripping frame member. The tubing can be sealed by deforming a metallic sealing ring about the tubing. The gripping heads include cooperating crimping slots between which the sealing ring is placed. When the gripping frame members are positioned adjacent one another, the sealing ring will be deformed closing off the interior of the plastic tube thereby precluding egress of blood from the collecting and dispensing bag and attached tubing.
It is therefore an object of the present invention to provide an improved integrated apparatus for stripping a fluid from a flexible tube and sealing the tube.
It is another object of the present invention to provide an integrated apparatus that permits the stripping of fluid from a plastic tube and sealing the tube.
It is still another object of the present invention to provide an improved apparatus for substantially and completely crimping blood from a donor tube for mixing with an anticoagulant solution.
It is still yet another object of the present invention to provide an integrated blood donor, tube stripper apparatus and crimping apparatus that is simple and inexpensive to fabricate.
The novel features which are believed to be characteristic of the invention, both as to its organization and method of operation, together with further objectives and advantages thereof, will be better understood from the following description considered in connection with the accompanying drawing in which a presently preferred embodiment of the invention is illustrated by way of example. It is to be expressly understood, however, that the drawing is for the purpose of illustration and description only, and is not intended as a definition of the limits of the invention.
The present invention can be best understood by reference to
As shown in
It is an objective of the present invention to provide an improved apparatus for substantially and completely stripping blood from a donor tube for mixing with an anticoagulant solution. As shown best in
The manner in which stripping rollers 16 and 17 will be properly aligned may be best seen by reference to
To strip blood from donor tube 15, gripping frame members 11 and 12 are urged together as shown in
The prior art generally discloses the folding of the tube upon itself as a temporary means for preventing the egress of blood in the tubing that has not been mixed with the anticoagulant solution. The present invention substantially improves upon the prior art through the use of the cooperating crimping heads 30 and 31 illustrated in
It is an object of the present invention to provide means to seal donor tube 15 with a sealing clip 34. As shown in
Claims
1. An apparatus for stripping fluid from fluid-filled tubing and sealing same comprising:
- (a) first and second linear gripping members being pivotally coupled at one end thereof;
- (b) first and second stripping rollers, each having a uniform cylindrical surface and tubing guides being secured to the opposed ends of the cylindrical surface of said first and second stripping rollers in axial alignment with the axis thereof, said first and second stripping rollers being rotatably coupled to said first and second gripping members respectively, whereby the cylindrical surfaces of said stripping rollers are adapted to define a uniform gap therebetween for receipt of the plastic tubing when said first and second gripping members are pivotally rotated adjacent one another;
- (c) a first crimping head secured to said first gripping member in alignment with the axis of said first stripping roller incorporating a first stamping surface extending downwardly from said first crimping head and being aligned in parallel spaced relation to the axis of the pivotal coupling between said first and second gripping members; and
- (d) a second crimping head secured to said second gripping member in alignment with the axis of said second stripping roller incorporating a second stamping surface extending upwardly from said second crimping head and aligned in parallel spaced relation to the pivotal coupling between said first and second gripping members, said second stamping surface being adapted to be positioned adjacent said first stripping surface when said first and second gripping members are pivotally rotated adjacent one another.
2. An apparatus for stripping fluid from fluid-filled tubing and sealing same as defined in claim 1 including a first alignment flange having an alignment surface depending downwardly from said first gripping member and a second alignment flange having an alignment surface extending upwardly from said second gripping member, the alignment surface of said second alignment flange being adapted to slidably engage the alignment surface of said first alignment flange when said first and second gripping members are pivotally rotated adjacent one another.
3. An apparatus for stripping fluid from fluid-filled tubing and sealing same as defined in claim 2 wherein the alignment surfaces of said first and second alignment flanges are coplanar with the plane of said coupled first and second gripping members.
4. An apparatus for stripping fluid from fluid-filled tubing and sealing same as defined in claim 1 wherein the pivotal coupling between said first and second linear gripping members include resilient means for resiliently opposing the rotation of said first and second gripping members toward one another.
5. An apparatus for stripping fluid from fluid-filled tubing and sealing same as defined in claim 1 wherein said first and second stamping surfaces of said first and second crimping heads each include opposed depressions adapted to receive a sealing member therebetween.
6. An apparatus for stripping fluid from fluid-filled tubing and sealing same as defined in claim 1 wherein the cylindrical surfaces of said first and second stripping rollers are in parallel spaced relation when said first and second gripping members are pivotally rotated adjacent one another.
7. An apparatus for stripping fluid from fluid-filled tubing and sealing same as defined in claim 6 wherein the tubing guides of each of said first and second stripping rollers are in parallel spaced relation to each other and are coplanar with the tubing guides of the opposed stripping roller.
8. An apparatus for stripping fluid from fluid-filled tubing and sealing same comprising:
- (a) first and second linear gripping members;
- (b) means for resiliently and pivotally coupling an end of each of said first and second gripping members to one another to resiliently oppose the rotation of said first and second gripping members toward one another;
- (c) first and second stripping rollers, each having a uniform cylindrical surface and tubing guides being secured to the opposed ends of the cylindrical surface of said first and second stripping rollers in axial alignment with the axis thereof, said first and second stripping rollers being rotatably coupled to said first and second gripping members respectively, whereby the cylindrical surfaces of said stripping rollers are adapted to define a uniform gap therebetween for receipt of the plastic tubing when said first and second gripping members are pivotally rotated adjacent one another;
- (d) a first crimping head secured to said first gripping member in alignment with the axis of said first stripping roller incorporating a first stamping surface extending downwardly from said first crimping head and being aligned in parallel spaced relation to the axis of the pivotal coupling between said first and second gripping members;
- (e) a second crimping head secured to said second gripping member in alignment with the axis of said second stripping roller incorporating a second stamping surface extending upwardly from said second crimping head and aligned in parallel spaced relation to the pivotal coupling between said first and second gripping members, said second stamping surface being adapted to be positioned adjacent said first stripping surface when said first and second gripping members are pivotally rotated adjacent one another, the first and second stamping surfaces of said first and second crimping heads each including opposed depressions adapted to receive a tube sealing member therebetween;
- (f) a first alignment flange having an alignment surface depending downwardly from said first gripping member; and
- (g) a second alignment flange having an alignment surface extending upwardly from said second gripping member, the alignment surface of said second alignment flange being adapted to slidably engage the alignment surface of said first alignment flange when said first and second gripping members are pivotally rotated adjacent one another.
9. An apparatus for stripping fluid from fluid-filled tubing and sealing same as defined in claim 8 wherein the alignment surfaces of said first and second alignment flanges are coplanar with the plane of said coupled first and second gripping members.
10. An apparatus for stripping fluid from fluid-filled tubing and sealing same as defined in claim 8 wherein the cylindrical surfaces of said first and second stripping rollers are in parallel spaced relation when said first and second gripping members are pivotally rotated adjacent one another.
11. An apparatus for stripping fluid from fluid-filled tubing and sealing same as defined in claim 8 wherein the tubing guides of each of said first and second stripping rollers are in parallel spaced relation to each other and are coplanar with the tubing guides of the opposed stripping roller.
Type: Application
Filed: Nov 1, 2011
Publication Date: May 2, 2013
Inventor: Henry B. David (Calabasas, CA)
Application Number: 13/317,895
International Classification: F04B 43/08 (20060101);