# US 5,349,958 A · Method and device for cutaneous marking of the venous anatomy

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- Number: US 5,349,958 A
- Document ID: US5349958A
- Status: Granted
- Kind: A
- Application number: 08/060,870
- Filed: 1993-05-13
- Granted: 1994-09-27
- Earliest claimed: 1992-03-12
- Assignees: Core Medical Technologies, Inc.
- Inventors: Lawrence M. Hanrahan; Lawrence P. Kinney
- Web page: https://patentgrep.com/patent/US5349958A

## CPC

- A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers}
- A61B 2090/395: {with marking agent for marking skin or other tissue}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A device (10) and method for cutaneously marking the venous anatomy with an ink. The method comprises selectively locating a portion of the venous anatomy to be marked and coating the skin (20) corresponding to the venous anatomy to be marked with a transmission gel (22). The transmission gel (22) permits a technician utilizing an ultrasound transducer to pinpoint the portion of the venous anatomy to be marked. Device (10) simultaneously clears the transmission gel from the skin (20) corresponding to the portion of the venous anatomy to be marked and marks the open space (24) on the skin (20) with the ink.

## Claims

### Claim 1

A device for cutaneously marking the venous anatomy which comprises:
a plastic encasing having an orifice;
a housing inside the plastic encasing having an inlet port and an outlet port;
a channel inside the housing, the channel connecting the inlet port to the outlet port;
a propellent source having a pressurized gas contained therein, the propellent source being connected to the inlet port;
a reservoir having a marking fluid contained therein, the marking fluid coming in contact with the pressurized gas at the orifice;
a switch connected to the channel, the switch being selectively engageable to allow the pressurized gas to pass through the channel to the outlet port, the pressurized gas coming in contact with the marking fluid at the office;
a piercing needle; and
a lever, the piercing needle entering the propellent source upon engagement of the lever and thereby releasing the pressurized gas into the channel.

### Claim 2

A system for cutaneously marking the anatomy with a marking fluid by means of a propellent source comprising:
an ultrasound transmission gel to coat the skin corresponding to the anatomy to be marked;
an ultrasound transducer for manipulation over the transmission gel to pinpoint the portion of the anatomy to be marked; and
a device which simultaneously clears the transmission gel from the skin corresponding to the portion of the anatomy to be marked as pinpointed by the ultrasound transducer and marks the skin with the marking fluid.

### Claim 3

A system for cutaneously marking the venous anatomy of a human being with a marking fluid in preparation for surgery comprising:
an ultrasound transmission gel to coat the skin corresponding to the venous anatomy to be marked;
an ultrasound transducer for manipulation over the transmission gel to pinpoint the portion of the venous anatomy to be marked; and
a device which simultaneously clears the transmission gel by means of a propellent source from the skin corresponding to the portion of the venous anatomy to be marked as pinpointed by the ultrasound transducer and marks the skin with the marking fluid.

### Claim 4 (depends on 2, 3)

The system as recited in claim 2 or 3, wherein the device comprises:
a plastic encasing having an orifice;
a housing inside the plastic encasing having an inlet port and an outlet port;
a channel inside the housing, the channel connecting the inlet port to the outlet port;
a propellent source having said pressurized gas contained therein, the propellent source being connected to the inlet port;
a reservoir having a marking fluid contained therein, the marking fluid coming in contact with the pressurized gas at the orifice; and
a switch connected to the channel, the switch being selectively engageable to allow the pressurized gas to pass through the channel to the outlet port, the pressurized gas coming in contact with the marking fluid at the orifice.

### Claim 5 (depends on 4)

The system as recited in claim 4, wherein the inlet port of the device comprises:
a piercing needle; and
a lever, the piercing needle entering the propellent source upon engagement of the lever and thereby releasing the pressurized gas into the channel.

### Claim 6 (depends on 4)

The system as recited in claim 4, wherein the channel of the device comprises:
a first segment;
a second segment; and
a regulator made of a porous material with baffles, the first segment connecting the inlet port to the regulator, the second segment connecting the regulator to the outlet port.

### Claim 7 (depends on 4)

The system as recited in claim 4, wherein the orifice of the device comprises:
an opening and the outlet port, the opening allowing the marking fluid to be discharged from the reservoir, the opening and the outlet port positioned so that the pressurized gas and the marking fluid come in contact.

### Claim 8 (depends on 7)

The system as recited in claim 7, wherein the opening of the device is positioned at an angle between approximately 30.degree. and approximately 60.degree. to the outlet port.

### Claim 9 (depends on 4)

The system as recited in claim 4, wherein the pressurized gas of the device comprises a mixture of between approximately 80% and approximately 90% 1.1-diflouroethane and between approximately 10% and 20% butane by volume.

### Claim 10 (depends on 4)

The system as recited in claim 4, wherein the marking fluid of the device comprises an ink combined with between approximately 80% and approximately 92% xylene by weight.

### Claim 11 (depends on 2, 3)

The system as recited in claim 2 or 3, wherein the device comprises:
an aerosol can having a chamber, the chamber containing a mixture of a pressurized gas and a marking fluid;
a channel inside the chamber connected the chamber to an inlet port; and
an actuator having a spout connected to the inlet port, the actuator being selectively engageable to allow the mixture to pass through the channel and the inlet port and to discharge through the spout.

### Claim 12 (depends on 11)

The system as recited in claim 11, wherein the spout of the device is positioned at an angle between approximately 30.degree. and approximately 60.degree. to the vertical center axis of the aerosol can.

### Claim 13 (depends on 11)

The system as recited in claim 11, wherein the pressurized gas of the device comprises a mixture of between approximately 80% and approximately 90% 1.1-diflouroethane and between approximately 10% and 20% butane by volume.

### Claim 14 (depends on 11)

The system as recited in claim 11, wherein the marking fluid of the device comprises an ink combined with between approximately 80% and approximately 92% xylene by weight.