# US 12,102,779 B2 · Obturator, sheath and method for using same

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- Number: US 12,102,779 B2
- Document ID: US12102779B2
- Status: Granted
- Kind: B2
- Application number: 16/652,328
- Filed: 2018-09-28
- Published: 2020-09-10
- Granted: 2024-10-01
- Earliest claimed: 2017-09-30
- Assignees: Two Birds Medical PTE. LTD.
- Applicants: Two Birds Medical Pte. Ltd.
- Inventors: Hsien Tsung Tay; Kiang Hiong Tay; Chin Cheung Andrew Lau; Thien Khanh Nguyen
- Web page: https://patentgrep.com/patent/US12102779B2

## CPC

- A61M 25/09041: {Mechanisms for insertion of guide wires}
- A61B 17/3421: {Cannulas}
- A61M 25/007: {Side holes, e.g. their profiles or arrangements; Provisions to keep side holes unblocked}
- A61M 25/01: Introducing, guiding, advancing, emplacing or holding catheters (A61M25/10 takes precedence)
- A61M 25/0108: {using radio-opaque or ultrasound markers}
- A61M 25/0662: {Guide tubes}
- A61M 2025/0018: {having a plug, e.g. an inflatable plug for closing catheter lumens}
- A61M 2025/018: {Catheters having a lateral opening for guiding elongated means lateral to the catheter}
- A61M 2025/0188: {having slitted or breakaway lumens}
- 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

An obturator comprising a hollow distal end portion, the distal end portion comprising a distal end and a side hole located proximally of the distal end, the side hole being for receipt of a guidewire and to direct the guidewire laterally from the obturator.

## Claims

### Claim 1

An obturator comprising a hollow distal end portion, the distal end portion comprising:
a single lumen;
a distal end;
an end hole at the distal end, for receipt of a guidewire extending through the single lumen; and
a side hole located proximally to the distal end, the side hole being for receipt of the guidewire extending through the single lumen, from a position proximal to the side hole, and to direct the guidewire laterally from the obturator, the side hole further being located so that when the obturator is located in a first bodily lumen, in use, a second bodily lumen can be located by flowing contrast medium through the obturator to exit the side hole, the obturator further comprises a flexible slit extending between the end hole and side hole configured to flex around the guidewire to allow the guidewire to be received into the single lumen as the obturator is retracted.

### Claim 2 (depends on 1)

An obturator according to claim 1, wherein the end hole is offset from the longitudinal axis of the obturator.

### Claim 3 (depends on 1)

An obturator according to claim 1, wherein the distal end portion tapers towards the distal end.

### Claim 4 (depends on 3)

An obturator according to claim 3, wherein the side hole is located proximally of the taper.

### Claim 5 (depends on 1)

An obturator according to claim 1, further comprising one or more orientation indicia positioned on a proximal portion of the obturator to indicate a location of the side hole around on a periphery of the obturator.

### Claim 6 (depends on 1)

A sheath assembly comprising:
an obturator according to claim 1; and
a sheath surrounding the obturator, the sheath comprising:
a substantially hollow body having a proximal end, a distal end and a single lumen in the distal end for receiving an obturator;
an end hole at the distal end, for receipt of a guidewire extending through the single lumen; and
a side hole disposed proximally of the distal end, so that when the sheath is located in a first bodily lumen, in use, a second bodily lumen can be located by flowing contrast medium through the sheath to exit the side hole, the side hole further being for receipt of a guidewire and to direct the guidewire laterally from the sheath.

### Claim 7 (depends on 6)

A sheath assembly according to claim 6, wherein the obturator is arranged within the sheath to selectively access the end hole and side hole from the single lumen.

### Claim 8 (depends on 6)

A sheath assembly according to claim 6, wherein the sheath is a cannula.

### Claim 9 (depends on 1)

The obturator according to claim 1, wherein the side hole has a teardrop shape, having a distally directed apex.

### Claim 10 (depends on 1)

The obturator according to claim 1, wherein the slit is configured to flex around the guidewire to allow the guidewire to be received into the single lumen as the obturator is retracted, so that the guidewire does not extend through the side hole.