# US 12,311,129 B2 · Medical catheter

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- Number: US 12,311,129 B2
- Document ID: US12311129B2
- Status: Granted
- Kind: B2
- Application number: 18/146,742
- Filed: 2022-12-27
- Published: 2023-08-17
- Granted: 2025-05-27
- Earliest claimed: 2018-06-05
- Assignees: Medtronic Vascular, Inc.
- Applicants: Medtronic Vascular, Inc.
- Inventors: Francis Denis McEvoy; Colm Connolly; Barry O'Connell; Shane Cooney; Joanna Cunniffe; James Hannon; Maria Larkin
- Web page: https://patentgrep.com/patent/US12311129B2

## CPC

- A61M 25/0045: {multi-layered, e.g. coated (coating materials A61L29/08)}
- A61M 25/0662: {Guide tubes}
- A61F 2/966: with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
- A61M 25/005: {with embedded materials for reinforcement, e.g. wires, coils, braids}
- A61M 25/0052: {Localized reinforcement, e.g. where only a specific part of the catheter is reinforced, for rapid exchange guidewire port}
- A61M 25/0108: {using radio-opaque or ultrasound markers}
- A61M 25/09: Guide wires
- A61M 25/001: {Forming the tip of a catheter, e.g. bevelling process, join or taper}
- A61M 25/0012: {with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils}
- 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 2025/0186: {Catheters with fixed wires, i.e. so called "non-over-the-wire catheters"}
- A61M 2025/0681: {Systems with catheter and outer tubing, e.g. sheath, sleeve or guide tube}
- A61M 2025/0687: {having means for atraumatic insertion in the body or protection of the tip of the sheath during insertion, e.g. special designs of dilators, needles or sheaths}
- 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)}
- A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C)

## Abstract

In some examples, a catheter may include an elongate body and a push assembly. The elongate body may include an inner liner defining an entry port into a lumen defined by the elongate body, and an outer jacket. The push assembly may an anchor member positioned at a distal end of an elongate member. Distal to a proximal end of the elongate body, a first portion of the push assembly, comprising the anchor member, may be positioned between a portion of the inner liner and a portion of the outer jacket. The anchor member may extend only partially around an outer perimeter of the inner liner when the catheter is assembled. Proximal to the proximal end of the elongate body, a second portion of the push assembly, proximal to the first portion, may be positioned outside of the outer jacket and the inner liner.

## Claims

### Claim 1

A catheter comprising:
an elongate body comprising:
an inner liner defining a lumen; and
an outer jacket positioned radially outward of the inner liner; and
a push assembly comprising:
an elongate member; and
an anchor member positioned at a distal portion of the elongate member, wherein
a proximal end of the anchor member is proximal to a distal end of the elongate member,
wherein the anchor member and a first portion of the elongate member are positioned between the inner liner and the outer jacket, the anchor member extending only partially around a perimeter of the inner liner, and
wherein a second portion of the elongate member is positioned proximal to the outer jacket and the inner liner.

### Claim 2 (depends on 1)

The catheter of claim 1, wherein a distal-most edge of the anchor member is beveled.

### Claim 3 (depends on 1)

The catheter of claim 1, wherein the anchor member extends from the proximal end to a distal end, the anchor member defining a slot extending from the proximal end of the anchor member towards the distal end of the anchor member, and wherein the distal end of the elongate member is positioned within the slot.

### Claim 4 (depends on 1)

The catheter of claim 1, wherein the anchor member is separate from and mechanically connected to the elongate member.

### Claim 5 (depends on 4)

The catheter of claim 4, wherein the anchor member is welded to the elongate member.

### Claim 6 (depends on 1)

The catheter of claim 1, wherein the anchor member defines a partial-ring shape.

### Claim 7 (depends on 1)

The catheter of claim 1, wherein the outer jacket comprises a first outer jacket section and a second outer jacket section distal to the first outer jacket section, the first and second outer jacket sections having different stiffnesses, and wherein the inner liner comprises a first inner liner section and a second inner liner section distal to the first inner liner section, the first inner liner section defining an entry port into the lumen and being less flexible than the second inner liner section.

### Claim 8 (depends on 1)

The catheter of claim 1, wherein the elongate body defines an entry port into the lumen, and wherein the proximal end of the anchor member is aligned with a proximal end of the entry port.

### Claim 9 (depends on 1)

The catheter of claim 1, wherein the elongate body defines an entry port into the lumen, wherein the entry port tapers to define an angle from a distal end of the entry port to a proximal end of the entry port.

### Claim 10 (depends on 1)

The catheter of claim 1, the elongate body further comprising a reinforcement member positioned between the inner liner and the outer jacket, wherein a distal end of the anchor member is positioned proximal to the reinforcement member.

### Claim 11 (depends on 1)

The catheter of claim 1, wherein the anchor member defines an inner surface and an outer surface wherein at least one of the inner surface or the outer surface defines a non-semicircular surface.

### Claim 12

A catheter comprising:
an elongate body comprising:
an inner liner defining an outer perimeter and defining an entry port into a lumen of the elongate body; and
an outer jacket positioned radially outward of the inner liner; and
a push assembly comprising:
an elongate member; and
an anchor member positioned at a distal portion of the elongate member, the anchor member extending from a proximal-most edge to a distal-most edge, wherein the distal-most edge is beveled,
wherein the anchor member and a first portion of the elongate member are positioned between the inner liner and the outer jacket such that each of the anchor member and the first portion of the elongate member are directly contacting the inner liner and the outer jacket, the anchor member having an inner perimeter that extends less than fully around the outer perimeter of the inner liner, and
wherein a second portion of the elongate member is positioned proximal to the outer jacket and the inner liner.

### Claim 13 (depends on 12)

The catheter of claim 12, wherein the anchor member is radiopaque marker.

### Claim 14 (depends on 12)

The catheter of claim 12, wherein the anchor member defines a slot extending from the proximal-most edge towards the distal-most edge, and wherein a distal end of the elongate member is positioned within the slot.

### Claim 15 (depends on 12)

The catheter of claim 12, wherein the anchor member is separate from and attached to the elongate member.

### Claim 16 (depends on 12)

The catheter of claim 12, wherein the elongate body further comprises a reinforcement member positioned between at least a portion of the inner liner and at least a portion of the outer jacket, wherein the distal-most edge of the anchor member is positioned proximal to the reinforcement member.

### Claim 17 (depends on 12)

The catheter of claim 12, wherein the entry port tapers to define an angle from a distal end of the entry port to a proximal end of the entry port.

### Claim 18

A catheter comprising:
an elongate body comprising:
an inner liner defining a lumen; and
an outer jacket positioned over the inner liner; and
a push assembly comprising:
an elongate member; and
an anchor member positioned at a distal portion of the elongate member, wherein the anchor member is separate from and attached to the elongate member, and wherein the elongate member tapers in a distal direction to define smooth profile at a juncture of the elongate member and the anchor member,
wherein the anchor member and a first portion of the elongate member are positioned between the inner liner and the outer jacket such that each of the anchor member and the first portion of the elongate member are directly contacting the inner liner and the outer jacket, the anchor member extending only partially around a perimeter of the inner liner, and
wherein a second portion of the elongate member is positioned proximal to the outer jacket and the inner liner.

### Claim 19 (depends on 18)

The catheter of claim 18, wherein a distal-most edge of the anchor member is beveled.

### Claim 20 (depends on 18)

The catheter of claim 18, wherein the anchor member extends from a proximal end to a distal end, the anchor member defining a slot extending from the proximal end of the anchor member towards the distal end of the anchor member, wherein the distal end of the elongate member is positioned within the slot.

### Claim 21 (depends on 12)

The catheter of claim 12, wherein the anchor member and the first portion of the elongate member are positioned between the inner liner and the outer jacket such that the anchor member and the first portion of the elongate member are positioned radially between the inner liner and the outer jacket.

### Claim 22 (depends on 12)

The catheter of claim 12, wherein the anchor member and the first portion of the elongate member are positioned between the inner liner and the outer jacket such that a distalmost end of the elongate member is positioned distally of a proximal end of the inner liner.

### Claim 23 (depends on 12)

The catheter of claim 12, wherein the elongate member does not define any lumens.

### Claim 24 (depends on 12)

The catheter of claim 12, wherein the outer jacket and the inner liner together define the entry port.