# US 2025/0352763 A1 · Medical devices for delivering fluid

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- Number: US 2025/0352763 A1
- Document ID: US20250352763A1
- Status: Published application
- Kind: A1
- Application number: 19/206,580
- Filed: 2025-05-13
- Published: 2025-11-20
- Earliest claimed: 2024-05-15
- Assignees: Boston Scientific Scimed, Inc.; Boston Scientific Medical Device Limited
- Applicants: Boston Scientific Scimed, Inc.; Boston Scientific Medical Device Limited
- Inventors: Rajivkumar SINGH; Sharath Kumar G; Deepak Kumar SHARMA; Nachiket GOLE; Rosangel Aimee RAMOS ESPINOZA; Ryan V. WALES
- Web page: https://patentgrep.com/patent/US20250352763A1

## CPC

- A61B 17/00491: {Surgical glue applicators}
- A61M 25/0082: {Catheter tip comprising a tool}
- A61M 5/31511: {Piston or piston-rod constructions, e.g. connection of piston with piston-rod (A61M5/5066 takes precedence)}
- A61M 25/00: Catheters; Hollow probes (dilators A61M29/00; {peritoneal catheters A61M1/285; tracheal tubes A61M16/04; for drainage A61M27/00; for uterus, vagina or rectum A61M31/00} ; for measuring or testing A61B; {materials for catheters A61L29/00})
- A61M 25/0029: {characterized by features relating to least one lumen located at the middle part of the catheter, e.g. slots, flaps, valves, cuffs, apertures, notches, grooves or rapid exchange ports (catheter shaft surface irregularities A61M2025/006)}
- A61M 25/0075: {Valve means}
- A61B 1/018: for receiving instruments
- A61B 2017/0034: {adapted to be inserted through a working channel of an endoscope}
- A61B 2017/00495: {for two-component glue}
- A61B 2017/00539: {hydraulically}
- A61B 2017/00557: {inflatable (A61B2017/22051 takes precedence)}
- A61B 2017/00876: {magnetic}
- A61M 25/0009: {Making of catheters or other medical or surgical tubes}
- A61M 2025/0018: {having a plug, e.g. an inflatable plug for closing catheter lumens}
- A61M 2025/0076: {Unidirectional valves}
- A61M 2025/0079: {Separate user-activated means, e.g. guidewires, guide tubes, balloon catheters or sheaths, for sealing off an orifice, e.g. a lumen or side holes, of a catheter}
- A61M 2202/0007: introduced into the body
- A61M 2202/04: Liquids
- A61M 2205/583: by visual feedback
- A61M 2205/8287: operated by an external magnetic or electromagnetic field
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- 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

Disclosed systems relate to medical devices for delivering fluid. In an example, a device includes a catheter having a distal end and a gasket movably positioned within a lumen of the catheter. The gasket includes a distal end having a first diameter, a proximal end having a second diameter that is greater than the first diameter, and a body connecting the distal end and the proximal end. The device also includes a nozzle positioned on the distal end of the catheter.

## Claims

### Claim 1

A device for delivering a treatment fluid, the device comprising:
a catheter having a distal end;
a gasket movably positioned within a lumen of the catheter, wherein the gasket comprises:
a distal end having a first diameter,
a proximal end having a second diameter that is greater than the first diameter, and
a body connecting the distal end and the proximal end; and
a nozzle positioned on the distal end of the catheter.

### Claim 2 (depends on 1)

The device of claim 1, wherein the gasket comprises one or more curved surfaces on the proximal end and/or the distal end.

### Claim 3 (depends on 1)

The device of claim 1, further comprising a syringe, wherein the catheter comprises a proximal end, and wherein the proximal end of the catheter is connected to the syringe.

### Claim 4 (depends on 3)

The device of claim 3, wherein the syringe comprises a plunger, wherein when depressed, the plunger causes a fluid disposed within the syringe to enter the proximal end of the lumen, the fluid to displace the gasket in a distal direction, and the gasket to cause a treatment fluid to be delivered from the nozzle.

### Claim 5 (depends on 4)

The device of claim 4, further comprising a tube connected to the syringe, inserted into the proximal end of the lumen, and connected to the gasket, wherein the gasket is a balloon gasket that is inflatable via the tube.

### Claim 6 (depends on 5)

The device of claim 5, wherein, in an expanded state, the gasket is generally cylindrical.

### Claim 7 (depends on 6)

The device of claim 6, wherein the plunger is a first plunger, wherein the syringe includes a second plunger, and wherein distal movement of the second plunger relative to the first plunger is configured to deliver a fluid through the tube to inflate the balloon gasket.

### Claim 8 (depends on 7)

The device of claim 7, wherein the syringe comprises a tip and wherein the tube is movable within the tip.

### Claim 9 (depends on 6)

The device of claim 6, wherein the catheter comprises an inlet positioned in a proximal portion of the lumen.

### Claim 10 (depends on 9)

The device of claim 9, wherein the syringe is a first syringe, and wherein the device includes a second syringe coupled to the inlet.

### Claim 11 (depends on 10)

The device of claim 10, wherein the second syringe is configured to deliver a fluid into the catheter via the inlet to move the gasket distally.

### Claim 12 (depends on 11)

The device of claim 11, wherein the tube includes a tube lumen, wherein the gasket includes a gasket lumen, and wherein the tube lumen is fluidly connected to the gasket lumen via one or more outlets.

### Claim 13 (depends on 12)

The device of claim 12, further comprising a seal positioned within a portion of the catheter and a tube that is movably positioned through the seal.

### Claim 14 (depends on 6)

The device of claim 6, wherein the syringe further comprises one or more markings on a body of the syringe that indicate an amount of fluid to dispense to cause the gasket to urge the treatment fluid from the lumen.

### Claim 15 (depends on 1)

The device of claim 1, wherein the catheter includes an additional lumen, and wherein an additional gasket is movably positioned within the additional lumen.

### Claim 16

A device for delivering a treatment fluid via an endoscope, the device comprising:
a catheter comprising a distal end, a first lumen, and a second lumen, each lumen extending along a longitudinal axis of the catheter;
a first gasket movably positioned within the first lumen;
a second gasket movably positioned within the second lumen; and
a nozzle positioned on the distal end of the catheter.

### Claim 17 (depends on 16)

The device of claim 16, further comprising at least one syringe, wherein the catheter comprises a proximal end, and wherein the proximal end of the catheter is connected to the at least one syringe.

### Claim 18 (depends on 17)

The device of claim 17, wherein the at least one syringe comprises a plunger, wherein when depressed, the plunger causes a fluid disposed within the syringe to (i) enter the proximal end of one or more of the first lumen and the second lumen and to (ii) displace one or more of the first gasket and the second gasket.

### Claim 19

A device for delivering a treatment fluid, the device comprising:
a catheter having a lumen a distal end;
a coil wound radially around or within a wall of a portion of the catheter;
a magnetic gasket movably positioned within the lumen of the catheter, wherein the gasket comprises:
a distal end having a first diameter,
a proximal end having a second diameter that is greater than the first diameter, and
a body connecting the distal end and the proximal end, wherein when an electric current is applied to the coil, the electric current generates a magnetic field that causes the magnetic gasket to move within the catheter.

### Claim 20 (depends on 19)

The device of claim 19, wherein when an electric voltage is applied to the coil, an electric current is caused to flow through the coil, causing a magnetic field to urge the magnet gasket along a longitudinal axis of the lumen.