# US 8,784,079 B2 · Pump module, pump base module and pump system

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- Number: US 8,784,079 B2
- Document ID: US8784079B2
- Status: Granted
- Kind: B2
- Application number: 13/272,251
- Filed: 2011-10-13
- Published: 2013-01-10
- Granted: 2014-07-22
- Earliest claimed: 2010-10-13
- Assignees: Fresenius Kabi Deutschland GmbH
- Applicants: Michael Becker
- Inventors: Michael Becker
- Web page: https://patentgrep.com/patent/US8784079B2

## CPC

- F04B 43/12: having peristaltic action
- A61M 5/1413: {Modular systems comprising interconnecting elements}
- A61M 5/14232: {Roller pumps}
- F01C 9/005: {the piston oscillating in the space, e.g. around a fixed point (rotary piston machines or engines with non-parallel axes of rotation between co-operating members F01C3/00)}
- F04B 43/082: {the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism}
- F04B 43/1207: {the actuating element being a swash plate}
- F04B 43/123: {using an excenter as the squeezing element}
- F04B 43/1238: {using only one roller as the squeezing element, the roller moving on an arc of a circle during squeezing}
- F04B 43/1253: {by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing}
- F04B 43/14: having plate-like flexible members
- F04C 9/005: {the piston oscillating in the space, e.g. around a fixed point (rotary-piston machines or pumps with non-parallel axes of movement between co-operating members F04C3/00)}
- F16K 31/126: the fluid acting on a diaphragm, bellows, or the like (F16K31/145, F16K31/165, F16K31/365, F16K31/385 take precedence)
- A61M 5/16863: {Occlusion detection}
- A61M 39/24: Check- or non-return valves
- A61M 39/26: Valves closing automatically on disconnecting the line and opening on reconnection thereof {(check valves A61M39/24)}
- A61M 2205/128: with incorporated valves
- A61M 2205/3351: Controlling upstream pump pressure
- A61M 2205/3355: Controlling downstream pump pressure
- A61M 2205/6045: having complementary physical shapes for indexing or registration purposes
- F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F)
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- F01C: ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES (internal-combustion aspects F02B53/00, F02B55/00)
- F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)}

## Abstract

A module, a base module and a system which comprises a module and a base module includes a pump channel and a valve unit which is connected with the pump channel wherein a fluid can be pumped through the pump channel and the valve unit, wherein a first wall section of the valve unit is flexible. The pump module has a movable valve body arranged in the valve unit, wherein the valve body can occupy an idle position in which the valve body closes the valve unit to prevent fluid from passing through. The valve body can occupy an operating position in which the valve body allows the fluid to flow through the valve unit and in which the valve body can be put in operating position through a deformation of the first wall section of the valve bodies so that the fluid can flow through the valve unit.

## Claims

### Claim 1

A pump module for a medical wobble pump, said pump module comprising a pump channel, and a valve unit connected to the pump channel, the valve unit having a flexible first wall section, wherein fluid can be pumped through the pump channel and the valve unit, a movable valve body arranged in the valve unit, wherein the movable valve body transitions between an idle position, in which the movable valve body closes the valve unit to prevent fluid from passing through, and an operating position, in which the movable valve body allows fluid to flow through the valve unit and wherein the movable valve body is configured to transition into the operating position through a deformation of the first wall section so that fluid can flow through the valve unit, wherein the pump module is formed by a base and a membrane, the first wall section is operable from outside the pump module, and wherein the movable valve body is directly connected to the first wall section.

### Claim 2 (depends on 1)

The pump module of claim 1, wherein, in the idle position, the valve body is resiliently pre-tensioned against a stop position of the valve unit.

### Claim 3 (depends on 1)

The pump module of claim 1, further comprising an outer wall formed at least in part by the first wall section.

### Claim 4 (depends on 1)

The pump module of claim 1, wherein the first wall section comprises a recess that is accessible from the outside, and into which a nose can be engaged.

### Claim 5 (depends on 1)

The pump module of claim 1, wherein the first wall section comprises a flexibly deformable material.

### Claim 6 (depends on 1)

The pump module of claim 1, wherein the base and the membrane form a line-shaped pump channel that is curved at least in sections, and wherein the base includes a pump channel inlet and a pump channel outlet, wherein the pump channel inlet and the pump channel outlet are connected to the pump channel for supplying and discharging fluid in the pump channel in such a way that, through a periodically rotating deformation of the membrane, fluid is pumped through the pump channel from the pump channel inlet to the pump channel outlet, and the base forms at least part of the valve unit.

### Claim 7 (depends on 6)

The pump module of claim 6, further comprising a cover for the pump body, wherein the membrane is connected to the cover and the cover is connected to the base, and wherein the cover and the base form the valve unit.

### Claim 8 (depends on 4)

The pump module of claim 4, wherein the nose comprises a bar.

### Claim 9 (depends on 4)

The pump module of claim 4, wherein the nose comprises a bolt.

### Claim 10

A pump base module comprising a pump drive system, a receptacle and a valve actuator, wherein the receptacle is configured to removably receive therein a pump module for a medical wobble pump, said pump module comprising a pump channel, and a valve unit connected to the pump channel, the valve unit having a flexible first wall section, wherein fluid can be pumped through the pump channel and the valve unit, a movable valve body arranged in the valve unit, wherein the movable valve body transitions between an idle position, in which the movable valve body closes the valve unit to prevent fluid from passing through, and an operating position, in which the movable valve body allows fluid to flow through the valve unit and wherein the movable valve body is configured to transition into the operating position through a deformation of the first wall section so that fluid can flow through the valve unit and wherein a valve actuator is configured to deform first wall section of the valve unit of the pump module during or after inserting the pump module into the receptacle so as to cause the valve body to be in the operating position.

### Claim 11 (depends on 10)

The pump base module of claim 10, wherein the valve actuator comprises an inflexible, protruding nose.

### Claim 12 (depends on 10)

The pump base module of claim 10, wherein the valve actuator comprises a flexible, extendable nose.

### Claim 13

A pump system, comprising a pump module for a medical wobble pump, said pump module comprising a pump channel, and a valve unit connected to the pump channel, the valve unit having a flexible first wall section, wherein fluid can be pumped through the pump channel and the valve unit, a movable valve body arranged in the valve unit, wherein the movable valve body transitions between an idle position, in which the movable valve body closes the valve unit to prevent fluid from passing through, and an operating position, in which the movable valve body allows fluid to flow through the valve unit and wherein the movable valve body is configured to transition into the operating position through a deformation of the first wall section so that fluid can flow through the valve unit, and a pump base module, wherein the pump base module includes a pump drive system, a receptacle and a valve actuator, wherein the receptacle is configured to removably receive therein the pump module, and wherein the valve actuator is configured to deform the first wall section of the valve unit of the pump module during or after inserting the pump module into the receptacle so as to cause the valve body to be in the operating position.