# US 11,992,633 B2 · Intravascular catheter device

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- Number: US 11,992,633 B2
- Document ID: US11992633B2
- Status: Granted
- Kind: B2
- Application number: 17/768,443
- Filed: 2020-10-09
- Published: 2023-01-26
- Granted: 2024-05-28
- Earliest claimed: 2019-10-23
- Assignees: Anesteasy AB
- Applicants: Anesteasy AB
- Inventors: Ove Jonsson
- Web page: https://patentgrep.com/patent/US11992633B2

## CPC

- A61M 25/0606: {"Over-the-needle" catheter assemblies, e.g. I.V. catheters}
- A61M 25/0612: {Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders}
- A61M 2025/0006: {which can be secured against axial movement, e.g. by using a locking cuff}
- A61M 2025/0008: {having visible markings on its surface, i.e. visible to the naked eye, for any purpose, e.g. insertion depth markers, rotational markers or identification of type}
- A61M 2039/062: {used with a catheter}
- 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)}

## Abstract

The disclosure relates to a catheter device (1) comprising a catheter (2) and a hypodermic introducer needle (3), wherein an extended portion (19) of the hypodermic introducer needle (3) is provided with ribs (23, 23a) that circumvent said extended portion, and a proximal end (5) of the catheter (2) is provided with a locking flange (25) adapted to engage with the ribs (23, 23a), such that each rib engaging with the locking flange (25) will provide a tactile indication to the user of the advancement of the catheter (2) in relation to the needle (3).

## Claims

### Claim 1

A catheter device (1) having an axis A-A, a lower (L) side adapted to face a patient, and an upper side (U) opposite the lower side adapted to face away from the patient, said catheter device (1) comprising a catheter (2) and a hypodermic introducer needle (3),
the catheter (2) comprising an axially elongated housing (4) having a proximal open end (5) adapted to receive a coupling mechanism or a plug, said housing (4) further comprising an internal passage (6), a connecting port (7) with an internal orifice (8) arranged on the upper side of the catheter (2), protrusion members (15) on an outer surface of the proximal open end (5), and said catheter (2) further comprising a flexible catheter tube (12) connected to the axially elongated housing (4), said flexible catheter tube (12) comprising a distal tip end (13) and a lumen (14), said lumen (14) being in fluid communication with the internal passage (6) of the housing (4);
the hypodermic introducer needle (3) comprising a proximal head (16), a hollow needle (17) having a distal beveled tip (18), an extended portion (19) connecting the hollow needle (17) with the proximal head (16) and adapted to engage with the proximal open end (5) of the catheter (2) when the hypodermic introducer needle (3) is inserted into the catheter (2), said head (16) comprising an axial channel (20) in fluid communication with an interior of the hollow needle (17), a grip plate (21) arranged on the proximal head (16) and extending in a direction perpendicular to an axial direction, and an engagement member (22) arranged on the grip plate (21) and protruding distally from said grip plate (21),
said catheter (2) and hypodermic introducer needle (3) being arranged such that when the needle (3) is inserted into the catheter (2), the grip plate (21) is directed towards the upper side (U) of the catheter (2) and aligned with the connection port (7), and wherein the protrusion members (15) on the proximal open end (5) of the catheter (2) are adapted to engage with the engagement member (22) on the grip plate (21) to prevent the hypodermic introducer needle (3) from rotating around the axis A-A in relation to the catheter (2),
wherein the extended portion (19) of the needle (3) is provided with ribs (23, 23a) that circumvent the extended portion (19) radially from the axis A-A, and wherein the proximal open end (5) of the catheter (2) is provided with a locking flange (25), adapted to engage with the ribs (23, 23a) on the extended portion (19) of the hypodermic introducer needle (3) upon distal motion of the catheter (2) in relation to said needle (3).

### Claim 2 (depends on 1)

The catheter device (1) according to claim 1, wherein the extended portion (19) of the hypodermic introducer needle (3) comprises a chamfered surface (24) along one side of an entire extended portion (19), leading to a cross-sectional U-shape of the extended portion (19).

### Claim 3 (depends on 1)

The catheter device (1) according to claim 1, wherein the ribs (23, 23a) are provided with indicators in order to indicate the position of the distal beveled tip (18) of the needle (3) in relation to the distal end (13) of the catheter tube (12).

### Claim 4 (depends on 1)

The catheter device (1) according to claim 1, wherein the indicators comprise marking of a rib (23, 23a) that will correspond to the catheter (2) being advanced a specified distance, providing a visual indication for an user, in addition to a tactile indication provided by each rib (23, 23a) being pulled over and engaging with the locking flange (25).

### Claim 5 (depends on 1)

The catheter device (1) according to claim 1, wherein the ribs (23, 23a) comprises indicators to indicate at least the advanced positions of a) the catheter (2) being advanced a distanced, said distance d corresponding to a length of the beveled tip (18) of the hypodermic introducer needle (3), and b) the catheter (2) being advanced a distance D, said distance D corresponding to) the length of the beveled tip (18) of the hypodermic introducer needle (3).

### Claim 6 (depends on 5)

The catheter device (1) according to claim 5, wherein said distance D corresponds to at least two times the length of the beveled tip (18).

### Claim 7 (depends on 2)

The catheter device (1) according to claim 2, wherein the ribs (23, 23a) are provided with indicators in order to indicate the position of the distal beveled tip (18) of the needle (3) in relation to the distal end (13) of the catheter tube (12).

### Claim 8 (depends on 7)

The catheter device (1) according claim 7, wherein the indicators comprise marking of a rib (23, 23a) that will correspond to the catheter (2) being advanced a specified distance, providing a visual indication for a user, in addition to a tactile indication provided by each rib (23, 23a) being pulled over and engaging with the locking flange (25).