# US 11,998,677 B2 · Surgical fluid management

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- Number: US 11,998,677 B2
- Document ID: US11998677B2
- Status: Granted
- Kind: B2
- Application number: 16/509,000
- Filed: 2019-07-11
- Published: 2019-10-31
- Granted: 2024-06-04
- Earliest claimed: 2008-08-22
- Assignees: Medtronic Xomed, Inc.
- Applicants: Medtronic Xomed, Inc.
- Inventors: Gerould W. Norman; Charles F. Scott Carpenter; Michael L. Koltz; Stephen R. Viviano
- Web page: https://patentgrep.com/patent/US11998677B2

## CPC

- A61M 1/77: {Suction-irrigation systems (aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463)}
- A61B 17/32: Surgical cutting instruments ({A61B18/042 takes precedence; suture cutters A61B17/0467;} implements for ligaturing and cutting {A61B17/122, A61B17/12; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133})
- A61M 3/0202: {with electronic control means or interfaces}
- A61M 3/0208: {before use}
- A61M 3/022: {Volume; Flow rate}
- A61M 3/0258: {by means of electric pumps}
- A61B 17/32002: {with continuously rotating, oscillating or reciprocating cutting instruments}
- A61B 2017/00199: {with a console, e.g. a control panel with a display}
- A61B 2017/00212: {using remote controls}
- A61B 2017/00225: {Systems for controlling multiple different instruments, e.g. microsurgical systems}
- A61M 1/772: {operating alternately}
- A61M 2205/3334: Measuring or controlling the flow rate
- A61M 2205/3569: sublocal, e.g. between console and disposable
- A61M 2205/3592: using telemetric means, e.g. radio or optical transmission
- A61M 2205/502: User interfaces, e.g. screens or keyboards
- A61M 2205/505: Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
- 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)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A surgical fluid manager includes a pump releasably engageable to tubing and a user interface. The user interface is configured to enable finger-touch selection of a fluid flow rate through the tubing and configured to operate in at least one of a first mode or a second mode. In the first mode, the flow rate is controlled via direct selection of one of a plurality of selectable digital numeric values, while in the second mode the flow rate is controlled via user selection of one alphanumeric identifier within a scale of alphanumeric identifiers. Each respective alphanumeric identifier directly corresponds to just one instrument size within a scale of instrument sizes.

## Claims

### Claim 1

A surgical system comprising:
a peristaltic pump releasably engageable relative to tubing, which is to be in fluid communication with an irrigation conduit of a selected surgical instrument to define an irrigation pathway from a fluid source through the tubing and the irrigation conduit; and
a control mechanism configured to enable selection of a fluid flow rate through the irrigation pathway, wherein the fluid flow rate is an independent variable and the control mechanism is configurable to control the fluid flow rate via:
a first mode in which the fluid flow rate is selectable for the selected surgical instrument as one of a plurality of selectable digital numeric values, the plurality of selectable digital numeric values corresponding with a set of associated selectable surgical instruments; and
a second mode in which the fluid flow rate is selectable for the selected surgical instrument via an alphanumeric identifier within a scale of alphanumeric identifiers, wherein each respective alphanumeric identifier of the scale of alphanumeric identifiers directly corresponds to a different size of a respective one of the set of associated selectable surgical instruments.

### Claim 2 (depends on 1)

The surgical system of claim 1, wherein the selected surgical instrument includes at least one of:
a first tool comprising the irrigation conduit and a cutting tool; or
a second tool comprising the irrigation conduit and a suction conduit that is separate and independent of the irrigation conduit.

### Claim 3 (depends on 2)

The surgical system of claim 2, wherein the second tool includes a plurality of second tools and wherein each second tool of the plurality of second tools has a differently sized cross-sectional area of the irrigation conduit relative to other second tools of the plurality of second tools.

### Claim 4 (depends on 3)

The surgical system of claim 3, wherein each second tool of the plurality of second tools has a differently sized cross-sectional area of the suction conduit relative to the other second tools of the plurality of second tools.

### Claim 5 (depends on 4)

The surgical system of claim 4, wherein within the plurality of second tools, a same fixed proportion is maintained between the cross-sectional area of the irrigation conduit and the cross-sectional area of the suction conduit.

### Claim 6 (depends on 1)

The surgical system of claim 1, wherein the control mechanism comprises:
a console positionable external to a sterile field and supporting the peristaltic pump; and
a remote control in communication with the console and positionable within the sterile field,
wherein the remote control is separate from and independent of the selected surgical instrument,
wherein both the console and the remote control provide for the selection of the fluid flow rate via one of the respective first mode or the second mode.

### Claim 7 (depends on 6)

The surgical system of claim 6, wherein the control mechanism, including both the console and the remote control, comprises:
an adjustment mechanism configured to cause at least one of an increase or a decrease in the fluid flow rate by a numeric value via discrete intervals of at least one order of magnitude less than an order of magnitude of the fluid flow rate.

### Claim 8 (depends on 1)

The surgical system of claim 1, comprising:
a dampening mechanism interposed between the peristaltic pump and the selected surgical instrument to modulate flow pulsations within the irrigation pathway.

### Claim 9 (depends on 1)

The surgical system of claim 1, wherein the control mechanism comprises a graphical user interface displaying and providing access to both the first mode and the second mode, wherein the graphical user interface provides convertible access between the first mode and the second mode.

### Claim 10 (depends on 1)

The surgical system of claim 1, wherein the control mechanism comprises a reverse flow function to automatically, temporarily reverse fluid flow through the tubing upon initiating a pause in the fluid flow.