Valve device

Abstract

The improved stopcock valve includes a valve body and a rotatable interference body having a bore therethrough. The valve body has at least one inlet port, at least one outlet port, and an internal cavity in communication with the at least one inlet port and the at least one outlet port. The rotatable body has an exterior surface. The bore has a first opening relative to the exterior surface and a second opening relative to the exterior surface. The interference body is disposed within the internal cavity of the valve body. The exterior surface includes a first tapered groove in communication with the first opening and a second tapered groove in communication with the second opening. The grooves are disposed to communicate with the at least one inlet port and the at least one outlet port upon rotation of the body.

Description

[Technical field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This application claims the benefit under Articles 4 and 8 of the Stockholm Act of the Paris Convention for the Protection of Industrial Property of U.S. Nonprovisional Application No. 17 / 657,505, filed March 31, 2022, which is hereby incorporated by reference in its entirety. [Background technology]

[0002] FIELD OF THEINVENTION The present invention relates generally to valve structures, and preferably to valve structures designed for use in medical infusion devices to control the flow of fluid therethrough.

[0003] Infusion devices are well known in the art and encompass multiple variations, designs and methods for administering and controlling a selected fluid to a patient. In one design, a single camera system is used to capture droplets passing through a droplet chamber. The captured droplet images are processed to determine individual droplet size, droplet growth and droplet volume. The combination of these measurements, processed by an on-board computer, calculates the flow rate. Summary of the Invention [Problem to be solved by the invention]

[0004] In these devices, precision in the valve design that controls the flow of fluid from the infusion to the patient is an issue, and while conventional stopcock valves are well known in the art, they do not provide the precision necessary to finely regulate the flow rate of a particular therapeutic agent, drug, fluid, etc., administered by the infusion device.

[0005] There is also a long-standing need for specialized flow valves having structural configurations that provide precise fluid control over the liquids flowing therethrough. [Means for solving the problem]

[0006] The present invention generally comprises an improved stopcock valve comprising a valve body and a rotatable interference body having a bore therethrough, the valve body having at least one inlet port, at least one outlet port, and an internal cavity in communication with the at least one inlet port and the at least one outlet port, the rotatable body having an outer surface, the bore having a first opening to the outer surface and a second opening to the outer surface, the interference body disposed within the internal cavity of the valve body, the outer surface including a first tapered groove in communication with the first opening and a second tapered groove in communication with the second opening, the grooves disposed to communicate with the at least one inlet port and the at least one outlet port upon rotation of the body, the body being rotatably disposed to either occlude fluid flow through the valve or adjustably control fluid flow through the valve via the bore.

[0007] In some configurations, the invention includes an improved stopcock valve comprising a valve body and a rotatable interference body having a bore therethrough. The valve body has at least one inlet port, at least one outlet port, and an internal cavity in communication with the at least one inlet port and the at least one outlet port, the rotatable body has an outer surface, the bore has a first opening to the outer surface and a second opening to the outer surface, the interference body is disposed within the internal cavity of the valve body, the outer surface includes at least one tapered groove in communication with at least one of the first opening and the second opening, the at least one tapered groove being arranged to communicate with at least one of the at least one inlet port and at least one outlet port upon rotation of the body. The interference body may further include a second tapered groove in communication with the second opening.

[0008] In another configuration, the body of the improved stopcock valve is rotatably disposed to either block fluid flow through the valve or adjustably control fluid flow through the valve via the through bore.

[0009] In some embodiments, at least one slot-shaped aperture of the improved stopcock valve has a tip and an end, the tip having an increasing width towards the end.

[0010] In another embodiment, the improved stopcock valve rotatable interferometer has a rotational control member, the valve having a pair of rotational control members, and the rotational control member of the rotatable interferometer is disposed to move between the pair of rotational control members of the valve.

[0011] In a further embodiment, the rotatable interferer of the improved stopcock valve is arranged to be actuated via a motor.

[0012] In an embodiment of the interferometer having a pair of groove-shaped apertures, the groove-shaped apertures each have a leading end and an end portion, the leading end having an increasing width towards the end portion.

[0013] In another configuration, the invention may comprise an infusion device for delivering a fluid, the infusion device comprising a control system, a motor, and the improved stopcock valve, the control system being arranged to receive at least one user input, the at least one user input initiating the control system to communicate a programmable protocol to the motor to operate the improved stock valve in accordance with the programmable protocol.

[0014] In another configuration, the present invention may generally comprise an infusion device for delivering a fluid, the infusion device comprising a motor and the improved stopcock valve as described above.

[0015] Various embodiments will now be illustrated with reference to the drawings, in which corresponding reference characters indicate corresponding parts throughout. [Brief description of the drawings]

[0016] [Figure 1]FIG. 1 is a cross-sectional view of an infusion device including a valve device of the present invention. [Figure 2A] FIG. 2A is a perspective view of the valve device 500. [Figure 2B] FIG. 2B is a right side view of the valve apparatus 500. [Figure 2C] FIG. 2C is a top view of the valve device 500. [Figure 2D] FIG. 2D is a front view of the valve device 500. [Diagram 3] FIG. 3 is an alternative perspective view of the valve apparatus 500. [Figure 4A] FIG. 4A is a perspective view of the valve body 501. [Figure 4B] FIG. 4B is a left side view of the valve body 501. [Figure 4C] FIG. 4C is a top view of the valve body 501. [Figure 5A] FIG. 5A is a perspective view of a valve 550. [Figure 5B] FIG. 5B is a front view of valve 550. [Figure 6A] FIG. 6A is a perspective view of flow control portion 552 of valve 550. [Figure 6B] FIG. 6B is a right side view of flow control section 552 of valve 550. [Figure 6C] FIG. 6C is a front view of flow control section 552 of valve 550. [Figure 6D] FIG. 6D is a perspective cross-sectional view of flow control section 552 of valve 550 taken along line 6D-6D in FIG. 6A. [Figure 7] FIG. 7 is a cross-sectional view of flow control section 552 of valve 550 taken along line 7-7 in FIG. 6B. [Figure 8] FIG. 8 is an enlarged view of flow control section 552 of valve 550 of FIG. 6B. [Figure 9A] FIG. 9A is a cross-sectional view of the valve apparatus 500 taken along line 9-9 in FIG. 2B. [Figure 9B]FIG. 9B is a cross-sectional view of the valve apparatus 500 taken along line 9-9 in FIG. 2B, showing the valve rotated from the position in FIG. 9A. [Figure 9C] FIG. 9C is a cross-sectional view taken along line 9-9 in FIG. 2B, showing the valve rotated from the position in FIG. 9B. [Figure 9D] FIG. 9D is a cross-sectional view taken along line 9-9 in FIG. 2B, showing the valve rotated from the position in FIG. 9C. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] It should be understood that like figure numbers on different drawings identify identical or functionally similar structural elements, and it should be understood that the claims are not limited to the disclosed aspects.

[0018] Further, it is to be understood that the invention is not limited to the particular methods, materials, and modifications described, as such may, of course, vary. Also, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the claims.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will be understood that methods, devices, or materials similar or equivalent to those described herein may be used in the practice or testing of the exemplary embodiments.

[0020] The term "substantially" is synonymous with terms such as "approximately," "approximate," "about," "approximately," "generally," "adjacent," "near," "essentially," "proximate," "vicinity," and the like, and it is understood that such terms may be used interchangeably as they appear in this specification and the claims. The term "proximal" is synonymous with terms such as "nearby," "close," "neighborhood," "vicinity," "adjacent," "immediately," and "adjacent," and it is understood that such terms may be used interchangeably as they appear in this specification and the claims.

[0021] It should also be understood that the terms "liquid" and "fluid" can be used interchangeably and both refer to substances that move through the present invention. The liquid or fluid may include water, saline, medicinal substances, combinations thereof, or other types of liquids or fluids that one of ordinary skill in the art of medical devices, medical care management, medical procedures, diagnostics, etc. would readily recognize as being usable in an infusion device. However, the present invention is not limited to use in medical infusion devices; that is, it should be understood that the present invention may be used in a number of applications where precise fluid control is required between two bodies or containers.

[0022] Turning now to the figures, FIG. 1 is a cross-sectional view of an exemplary infusion device 100. The infusion device 100 has a case 101 that houses a droplet chamber 400. The droplet chamber 400 is arranged to receive fluid from an IV bag attached to the top of the droplet chamber 400. Fluid 425 collects at the distal end of the droplet chamber 400 from a drop former 410. The fluid 425 is a pool of fluid that collects from individual fluid droplets. A specialized valve device 500 is disposed at the distal end of the droplet chamber 400 in fluid communication with the droplet chamber 400. The specialized valve device 500 controls the flow rate of the fluid 425 delivered to a patient in fluid communication with the distal end of the specialized valve device 500. The specialized valve device 500 is preferably driven by a motor shaft of a motor 600. In a preferred embodiment, the motor shaft of the motor 600 actuates the specialized valve assembly 500 according to a programmed protocol corresponding to the fluids and / or substances selected for delivery to the patient.

[0023] 2A-9D, described below, generally illustrate the components of the specialty valve of the infusion device. The specialty valve device 500 is the flow control mechanism for the fluids and / or liquids of the infusion device 100. The specialty valve device 500 is driven by a motor (shown in FIG. 1) according to a programmable protocol communicated from a control system in response to selected user inputs, i.e., selection of a particular drug, liquid, or fluid protocol entered into the infusion device 100. The actuation of the specialty valve device 500 by the motor is further controlled by the control system such that the actuation of the specialty valve device 500 varies in response to calculations determined by the control system.

[0024] 2A-2D, the specialized valve device 500 generally comprises a specialized valve body 501 and a specialized valve 550. The specialized valve body 501 is disposed to receive the specialized valve 550 therein. In a preferred embodiment, snap-fit ​​elements on both the specialized valve body 501 and the specialized valve 550 interact to rotatably secure the specialized valve 550 within the specialized valve body 501. The specialized valve 550 has a flow control portion 552 (shown in FIG. 3) which is a rotatable interference body disposed within the specialized valve body 501. The flow control portion 552 is disposed such that rotation of the valve 500 completely prevents the flow of liquid through the specialized valve device 500, decreases or increases the flow of liquid through the specialized valve device 500, or only slightly or not at all interferes with the flow of liquid through the specialized valve device 500. These positions are described in more detail below with reference to FIGS. 9A-9D.

[0025] 3 is another perspective view of the specialized valve device 500. The specialized valve body 501 includes a valve housing 502. The valve housing 502 is positioned to rotatably secure the specialized valve 550 therein, and in particular the flow control portion 552 of the specialized valve 550. The specialized valve body 501 also includes a flow body portion 503 defined by an inlet end 504 and an outlet end 505. The valve housing 502 is positioned between the inlet end 504 and the outlet end 505. In a preferred embodiment, the valve housing 502 is positioned closer to the inlet end 504 than to the outlet end 505.

[0026] Specialty valve 550 generally comprises a rotation control 551 and a flow control 552. In a preferred embodiment, rotation control 551 and flow control 552 are integral. However, rotation control 551 and flow control 552 may be two separate components that are fixedly secured to one another, such as by a snap fit or screw fastener.

[0027] FIG. 3 further illustrates the rotation control members 506, 507 of the specialized valve device 500. The rotation control members prevent the specialized valve 550 from over-rotating within the specialized valve body 501. That is, the specialized valve 550 only rotates between the rotation control members of the specialized valve body 501. The specialized valve body 501 has two rotation control members, an upper rotation control member 506 and a distal rotation control member 507. The upper rotation control member 506 is fixedly secured to the exterior surface of the valve housing 502 near the inlet end 504 and near the rotation control portion 551 of the specialized valve 550. The distal rotation control member 507 is fixedly secured to the exterior surface of the valve housing 502 proximal to the outlet end 505 and near the rotation control portion 551 of the specialized valve 550. The specialized valve 550 also includes a rotation control member 553. The rotation control member 553 is preferably located on the distal face 551a of the rotation control section 551 of the specialty valve 550. When the specialty valve 550 is properly engaged within the specialty valve body 501, the rotation control member 553 is located between the upper rotation control member 506 and the distal rotation control member 507. In a preferred embodiment, the amount of rotation of the specialty valve 550 before contact between the rotation control member 553 and either the upper rotation control member 506 or the distal rotation control member 507 is less than approximately 180 degrees.

[0028] The following description will be made with reference to Figures 4A-4C. Figures 4A-4C are various views illustrating the specialized valve body 501 without the specialized valve 550 inserted. As shown, the flow control section 552 of the specialized valve 550 is positioned to snap-fit ​​into the valve aperture 509. The flow control section 552 of the specialized valve 550 includes an attachment means (described below). As shown in Figure 6, the attachment means is arranged to interact with the valve attachment means 509a, for example via a snap-fit ​​such as tongue and groove or other snap-fit ​​attachment means known in the art, to secure the flow control section 552 within the valve aperture 509. The attachment body 508 is positioned proximate to and defines the inlet end 504 of the flow body 503. The attachment body 508 is positioned to mate with the distal end of the drip chamber of the infusion device, thereby allowing flow from the drip chamber to enter the upper flow channel 510. The upper flow passage 510 is disposed above the valve housing 502 and adjacent the inlet end 504. That is, the upper flow passage begins at the inlet end 504 and terminates at an opening to the valve housing 502. The specific location of the upper flow passage 510 is described in more detail below.

[0029] The following description will be made with reference to Figures 5A and 5B, which are perspective and front views, respectively, of a specialized valve 550. A flow control section 552 extends from a distal surface 551a of a rotation control section 551 of the specialized valve 550. An outer surface 552a of the flow control section 552 of the specialized valve 550 is provided with a valve attachment means 509b of the flow control section 552. As shown in Figure 3, the valve attachment means 509b is arranged to mate, engage, etc. with a valve attachment means 509a of a valve aperture 509 (shown in Figure 4A) via, for example, a snap fit, such as a tongue and groove, or other snap-fit ​​type attachment means known in the art, to secure the flow control section 552 within the valve aperture 509. Additionally, a first opening 561 of an intermediate flow path 560 is disposed on an outer surface 552a of the flow control portion 552, and a second opening 562 (shown in FIG. 6D) is disposed on an opposite outer surface 552a of the flow control portion 552. The intermediate flow path 560 is a channel, tube, etc., and is arranged to connect the upper flow path 506 (shown in FIG. 9A) and the distal flow path 507 (shown in FIG. 9A) when the special valve 550 is rotated at a particular angle within the valve aperture 509.

[0030] FIG. 5B shows a first space 551b and a second space 551c provided in the rotation control section 551. The first space 551b and the second space 551c are voids, spaces, or gaps in the rotation control section 551, and are arranged to receive a motor shaft end member. To rotate the valve 550 (shown in various positions in FIGS. 9A-9D), the first space 551b and the second space 551c apply a force to the outer surfaces of the first space 551b and the second space 551c when the engaged motor shaft end member applies a force to the outer surfaces of the first space 551b and the second space 551c, thereby changing the position of the first opening 561 and the second opening 562 of the intermediate passage 560 (shown in dashed lines in FIG. 5B) to control the flow of the liquid therethrough. The central through bore in which the intermediate passage 560 is located may be used as an engagement position so that the motor shaft engages the special valve 550 for actuation.

[0031] Rotation control 551 may alternatively be a lever mechanism such as a gate valve or a stock-cock. Alternatively, rotation control 551 may be in the shape of a handle or a crutch head from which flow control 552 extends. These alternatives for rotation control 551 may allow valve 550 to be manually rotated for alternative uses of valve 550.

[0032] Reference will now be made to Figures 6A-6D. Figures 6A-6C show flow control section 552 removed from special valve 550. Figure 6D is a cross-sectional view of flow control section 552 taken along line 6D-6D shown in Figure 6A. As can be best seen in Figures 6C and 6D, intermediate flow passage 560 intersects a substantially central portion of flow control section 552. Intermediate flow passage 560 has two opposing openings, first opening 561 and second opening 562.

[0033] 7 is a cross-sectional view of the flow control portion 552 taken along line 7-7 in FIG. 6B. The first opening 561 and the second opening 562 of the flow control portion 552 have a first tapered groove 561a and a second tapered groove 562a extending from the respective openings. The first tapered groove 561a extends from a first groove opening 561b at a first groove end 561b to a first groove tip 561c. The first tapered groove 561a opens at an outer surface 552a of the flow control portion 552 and extends to a first groove floor 561d and a first groove opening 561e. The first tapered groove 561a merges with the intermediate flow passage 560 at the first groove opening 561e, thereby placing the first tapered groove 561a in fluid communication, i.e., the first tapered groove 561a and the intermediate flow passage 560 in liquid communication. The second tapered groove 562a extends from the second opening 562 at the second groove end 562b to the second groove tip 562c. The second tapered groove 562a opens at the outer surface 552a of the flow control portion 552 and extends to the second groove floor 562d and the second groove opening 562. The second tapered groove 562a merges with the intermediate flow passage 560 at a second groove opening 562e, thereby placing the second tapered groove 562a in fluid communication, i.e., the second tapered groove 562a and the intermediate flow passage 560 in liquid communication.

[0034] The following description will be made with reference to Figures 7 and 8. The following description will be directed to the first opening 561 and the first tapered groove 561a, and also applies to the second opening 562 and the second tapered groove 562a. Figure 8 is a partial enlarged view of the flow control portion 552 shown in Figure 6B. As previously described, the first tapered groove 561a extends from the first groove end 561b and terminates at the first groove tip 561c. The first tapered groove 561a is defined by a varying depth and width. The depth of the first groove end 561b, i.e., the distance from the outer surface 552a to the first groove opening 561e, is greater than the depth of the first groove tip 561c, i.e., the distance from the outer surface 552a to the end of the first groove floor 561d adjacent the first groove tip 561. The depth of the first tapered groove 561a gradually decreases from the first groove end 561b toward the first groove tip 561c. The first groove floor 561d is disposed to terminate at the first groove tip 561c and is flush with the outer surface 552a. The first groove opening 561b has a width W1. The width W1 is greater than the width W2 of the first tapered groove 561a near the first groove tip 561. The width of the first tapered groove 561a gradually decreases from the first groove end 561b toward the first groove tip 561c, and the first tapered groove 561a terminates at the first groove tip 561c, i.e., has no width at the first groove tip 561c.

[0035] 9A-9D, which illustrate various positions of the flow control section 552 of a valve 550 as it rotates within the valve body 501. It should be understood that the illustrated positions of the flow control section 552 are merely exemplary. The flow control section 552 may be rotated in finer increments to accommodate a particular flow rate of liquid. The liquid flows from the upper flow passage 510 through the intermediate flow passage 560 to the distal flow passage 511 and then out of the distal flow passage 511 at respective openings near the outlet end 505 of the valve body 501.

[0036] 9A illustrates the valve device 500 in a closed position, i.e., there is no flow of liquid from the upper flow passage 510 through the intermediate flow passage 560 to the distal flow passage 511. Specifically, the outer surface 552a of the flow control portion 552 of the valve 500 seals the second opening 510b of the upper flow passage 510 and the first opening 511a of the distal flow passage 511.

[0037] FIG. 9B illustrates a partially open position of the valve device 500. That is, there is minimal flow from the upper flow channel 510 through the intermediate flow channel 560 to the distal flow channel 511. In the partially open position, liquid may flow into the first opening 510a of the upper flow channel 510 and through the second opening 510b of the upper flow channel 510 to the second tapered groove 262a. Specifically, liquid flows into a region of the second tapered groove 562a near the second groove tip 562c, and liquid enters the intermediate flow channel 560 through the second groove opening 562b. Liquid then travels within the intermediate flow channel 560 in a direction toward the first opening 561, where liquid enters the distal flow channel 511 at the first opening 511a and exits the distal flow channel 511 through the second opening 511b. Specifically, liquid flows out of the intermediate flow path 560 through the first opening 561b of the first tapered groove 561a, travels toward the first groove tip 561a, and the liquid flows into the distal flow path 511 at the first opening 511a.

[0038] FIG. 9C shows the valve device 500 in a substantially open position. That is, a moderate amount of liquid flows from the upper flow passage 510 through the intermediate flow passage 560 to the distal flow passage 511. In the substantially open position, the liquid may flow into the first opening 510a of the upper flow passage 510, through the second opening 510b of the upper flow passage 510, and into the second opening 562 of the second tapered groove 562a of the intermediate flow passage. Specifically, the liquid flows into a region that partially includes the second tapered groove 562a near the second groove end 562b, and flows partially and directly into the intermediate flow passage 560. The liquid then flows in the intermediate flow passage 560 in a direction toward the first opening 561, flows into the distal flow passage 511 at the first opening 511a, and flows out of the distal flow passage 511 via the second opening 511b. Specifically, liquid flows out of the intermediate flow path 560 partially through the first opening 561b of the first tapered groove 561a, partially through the first groove opening 561b, and into the distal flow path 511 at the first opening 511a.

[0039] Figure 9D illustrates the valve device 500 in a fully open position, i.e., the arrangement illustrated in Figure 9D maximizes the flow of liquid from the upper flow channel 510 through the intermediate flow channel 560 to the distal flow channel 511 because all of the respective flow channels are unrestrictedly aligned as shown in Figure 9D.

[0040] It should be understood that the first tapered groove 561a or the second tapered groove 562b and the inner surface of the valve aperture 509 form a sealed tunnel to prevent escape of liquid flowing through the flow control portion 522 to the first opening 561 or the second opening 562.

[0041] In this way, the object of the present invention can be effectively obtained. Modifications and variations of the present invention will be readily apparent to those skilled in the art, and such modifications and variations are intended to fall within the scope of the appended claims. [Explanation of symbols]

[0042] 100: Infusion device 101: Case of infusion device 100 400: Droplet chamber 410: Droplet forming portion of the droplet chamber 400 425:Fluid 500: Special valve device 501: Special valve body of special valve device 500 502: Valve housing of the valve body 501 503: Flow body portion of valve body 501 504: Inlet end of flow body 503 505: Outlet end of flow body 503 506: Upper rotation control member 507: Distal rotation control member 508: Mounting body of the valve body 501 509: Bulb Aperture 509a: Valve mounting means for valve aperture 509 509b: Valve mounting means for flow control section 552 510: Upper flow passage 510a: First opening of upper flow channel 510 510b: second opening of upper flow channel 510 511: Distal channel 511a: first opening of distal flow channel 511 511b: second opening of distal flow channel 511 550: Special valves 551: Rotation control section of special valve 550 551a: Distal surface of rotation control section 551 551b: First space of rotation control section 551 551c: Second space of rotation control section 551 552: Flow control section of special valve 550 552a: Outer surface of flow control portion 552 553: Rotation control member of special valve 550 560: Intermediate flow path 561: First opening of intermediate flow channel 560 561a: First tapered groove of the first opening 561 561b: first groove end of the first tapered groove 561a 561c: First groove tip portion of the first tapered groove 561a 561d: first groove floor portion of the first tapered groove 561a 561e: first groove opening of first tapered groove 561a 562: Second opening of intermediate flow passage 560 562a: second tapered groove of second opening 562 562b: second groove end of the second tapered groove 562a 562c: second groove tip portion of the second tapered groove 562a 562d: second groove floor of second tapered groove 562a 562e: second groove opening of second tapered groove 562a 600: Gearbox / Motor W1: First width of the first tapered groove 561a W2: second width of the first tapered groove 561a

Claims

1. A valve body; a rotatable interference body having a bore therethrough; An improved stopcock valve comprising: the valve body having at least one inlet port, at least one outlet port, and an internal cavity in communication with the at least one inlet port and the at least one outlet port; The rotatable body has an outer surface; the through bore having a first opening relative to the exterior surface and a second opening relative to the exterior surface; the interference body is disposed within the internal cavity of the valve body; the outer surface includes a first tapered groove communicating with the first opening and a second tapered groove communicating with the second opening; the groove is disposed to communicate with the at least one inlet port and the at least one outlet port upon rotation of the body; 1. The improved stopcock valve, wherein the body is rotatably arranged to either block fluid flow through the valve or adjustably control fluid flow through the valve via the through bore.

2. 2. The improved stopcock valve of claim 1, wherein the two groove-shaped apertures have a tip and an end, the tip increasing in width towards the end.

3. The rotatable interference body has a rotation control member, The valve has a pair of rotation control members, 2. The improved stopcock valve of claim 1, wherein said rotational control member of said rotatable interference body is disposed for movement between said pair of rotational control members of said valve.

4. 2. The improved stopcock valve of claim 1, wherein the two groove-shaped apertures have a tip and an end, the tip increasing in depth toward the end.

5. 2. The improved stopcock valve of claim 1, wherein said rotatable interference body is arranged for actuation via a motor.

6. 1. An infusion device for delivering a fluid, comprising: A control system; A motor; 2. The improved stopcock valve of claim 1; Equipped with the control system is arranged to receive at least one user input; and wherein the at least one user input initiates the control system to transmit a programmable protocol to the motor to operate the improved stock valve in accordance with the programmable protocol.

7. A motor; 2. The improved stopcock valve of claim 1; 1. An infusion device for delivering a fluid, comprising:

8. A valve body; a rotatable interference body having a bore therethrough; An improved stopcock valve comprising: the valve body having at least one inlet port, at least one outlet port, and an internal cavity in communication with the at least one inlet port and the at least one outlet port; The rotatable body has an outer surface; the through bore having a first opening relative to the exterior surface and a second opening relative to the exterior surface; the interference body is disposed within the internal cavity of the valve body; the outer surface includes a first tapered groove communicating with the first opening and a second tapered groove communicating with the second opening; the groove is disposed to communicate with the at least one inlet port and the at least one outlet port upon rotation of the body; the body is rotatably disposed to either occlude fluid flow through the valve or adjustably control fluid flow through the valve via the throughbore; The two groove-shaped apertures have a leading edge and an end, the leading edge increasing in circumference toward the end, the tip and the end of each of the two groove-shaped apertures have a depth, the depth increasing with distance from the tip toward the end; 13. The improved stopcock valve, wherein the rotatable interference body has a rotational control member and the valve has a pair of rotational control members, the rotational control member of the rotatable interference body being disposed for movement between the pair of rotational control members of the valve.

9. 9. The improved stopcock valve of claim 8, wherein said rotatable interference body is arranged for actuation via a motor.

10. A control system; A motor; 9. The improved stopcock valve of claim 8; 1. An infusion device for delivering a fluid comprising: An infusion device for supplying a fluid, characterized in that the control system is arranged to receive at least one user input, and the at least one user input initiates the control system to transmit a programmable protocol to the motor to operate the improved stock valve in accordance with the programmable protocol.

11. 1. An infusion device for delivering a fluid, comprising: A motor; 9. The improved stopcock valve of claim 8; 1. An infusion device for delivering a fluid, comprising:

12. A valve body; a rotatable interference body having a bore therethrough; An improved stopcock valve comprising: the valve body having at least one inlet port, at least one outlet port, and an internal cavity in communication with the at least one inlet port and the at least one outlet port; The rotatable body has an outer surface; the through bore having a first opening relative to the exterior surface and a second opening relative to the exterior surface; the interference body is disposed within the internal cavity of the valve body; the outer surface includes at least one tapered groove in communication with at least one of the first opening and the second opening, the at least one tapered groove disposed to communicate with at least one of the at least one inlet port and the at least one outlet port upon rotation of the body.

13. 13. The improved stopcock valve of claim 12, wherein the body is rotatably disposed to either occlude fluid flow through the valve or adjustably control fluid flow through the valve via the through bore.

14. 14. The improved stopcock valve of claim 13, wherein at least one groove-shaped aperture has a tip and an end, said tip increasing in width towards said end.

15. The rotatable interference body has a rotation control member, The valve has a pair of rotation control members, 13. The improved stopcock valve of claim 12, wherein said rotational control member of said rotatable interference body is disposed for movement between said pair of rotational control members of said valve.

16. 13. The improved stopcock valve of claim 12, wherein said rotatable interference body is arranged for actuation via a motor.

17. 13. The improved stopcock valve of claim 12, further comprising a second tapered groove in communication with said second opening.

18. 20. The improved stopcock valve of claim 17, wherein the groove-shaped aperture has a tip and an end, said tip increasing in width towards said end.

19. A control system; A motor; 13. The improved stopcock valve of claim 12; 1. An infusion device for delivering a fluid, comprising: the control system is arranged to receive at least one user input; and wherein the at least one user input initiates the control system to transmit a programmable protocol to the motor to operate the improved stock valve in accordance with the programmable protocol.

20. 1. An infusion device for delivering a fluid, comprising: A motor; 13. The improved stopcock valve of claim 12; 1. An infusion device for delivering a fluid, comprising:

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