IP Library › Granted Patent US 12,691,191
Granted Patent B2
US 12,691,191 · App. 18/034,806 · Granted Jul 28, 2026

Medical tube

Inventors: Martin Duffner (Munich, DE); Christina Weber (Munich, DE); Daniel Scherzer (Unterschleißheim, DE); Erick Daniel Pano Paniagua (Munich, DE)
Assignee: Puray GmbH
A61L2/10A61L2/26A61N5/0603A61N5/0624A61L2103/15A61L2202/11A61N2005/061A61N2005/063A61N2005/0661
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,691,191
App. No.
18/034,806
Filed
May 1, 2023
Granted
Jul 28, 2026
Kind
B2
Art Unit
3796
USPC
607/92
Abstract

Disclosed is a tube comprising at least one lumen, and a wall comprising at least one or a plurality of wave-guide(s). The wall encloses the at least one lumen. The tube comprises a distal end configured for being introduced into a body of a mammal and a proximal end comprising a tube-connector. The wave-guide(s) are configured to conduct electro-magnetic radiation along the tube. The tube is configured to emit at least a part of the radiation into the lumen and/or to an outer surface of the tube. The wave-guide(s) are configured for transmitting and side-emitting UV-light comprising a wave-length of 200-280 nm, preferably 210-260 nm, and still more preferably 210-230 nm. The wall comprises fluorinated ethylene-propylene. Further disclosed is a system comprising the tube and a radiation source configured for emitting electro-magnetic radiation, preferably UV-C light. Also, a method for using the tube is disclosed. The method comprises applying the tube to a body of a patient.

Claims (26)

1 . A tube comprising at least one lumen, and a wall comprising at least one or a plurality of wave-guide(s) and enclosing the at least one lumen,

wherein the tube comprises a distal end configured for being introduced into a body of a mammal and a proximal end comprising a tube-connector,

wherein the wave-guide(s) are configured to conduct electro-magnetic radiation along the tube,

wherein the tube is configured to emit at least a part of the radiation into the lumen and/or to an outer surface of the tube,

wherein the wave-guide(s) are configured for transmitting and side-emitting UV-light comprising a wave-length of 200-280 nm,

wherein the wall comprises fluorinated ethylene-propylene, and

wherein the wall of the tube comprises a cross-section area, and wherein the cross-section area of the wall of the tube comprises a negative gradient along the tube from the proximal to the distal end.

2 . The tube according to claim 1 , wherein the wave-guide(s) are permanently attached to at least a portion of the wall, and wherein each of the wave-guide(s) comprises an optic fibre.

3 . The tube according to claim 2 , wherein the optic fibre comprises a high-OH silica core.

4 . The tube according to claim 1 , wherein the wave-guide(s) comprise a liquid light guide, wherein the liquid light guide comprises a canal for a light guide liquid, wherein the canal comprises the light guide liquid.

5 . The tube according to claim 1 , wherein the wave-guide(s) comprise a gradient of a side-emittance of the UV-light, and wherein the side-emittance of the UV-light increases from the proximal to the distal end.

6 . The tube according to claim 1 , wherein the tube comprises a spherical diffusor at the distal end.

7 . The tube according to claim 1 , wherein the tube comprises a fluorescent element.

8 . The tube according to claim 1 , wherein the tube is at least one of a catheter, a drain and an infusion tube.

9 . The tube according to claim 1 , wherein the tube-connector is configured to connect the wave-guide(s) to a radiation source.

10 . The tube according to claim 1 , wherein the wave-guide(s) are configured for transmitting and side-emitting the UV-light comprising a wave-length of 210-260 nm.

11 . The tube according to claim 1 , wherein the wave-guide(s) are configured for transmitting and side-emitting the UV-light comprising a wave-length of 210-230 nm.

12 . A system, comprising the tube according to claim 1 , and further comprising a radiation source configured for emitting the electro-magnetic radiation, wherein the electro-magnetic radiation comprises UV-C light.

13 . The system according to claim 12 , wherein at least 50% of the electro-magnetic radiation comprise a wavelength of 222±5 nm.

14 . The system according to claim 12 , wherein the system is configured for releasing the electro-magnetic radiation substantially evenly over a length of the tube and wherein the system is configured for intermittingly emitting the UV-C light.

15 . The system according to claim 12 , wherein the tube-connector comprises a socket, and

wherein the radiation source comprises a source-connector configured to connect the radiation source to the tube-connector, wherein the source-connector comprises a plug configured to be plugged into the socket of the tube-connector.

16 . The system according to claim 12 , wherein at least 80% of the electro-magnetic radiation comprises a wavelength of 222±5 nm.

17 . The system according to claim 12 , wherein at least 95% of the electro-magnetic radiation comprises a wavelength of 222±5 nm.

18 . A method for using the tube according to claim 1 , comprising applying the tube to a body of a patient.

19 . A method for using the system according to claim 12 , comprising applying the tube of the system to a body of a patient.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 22, 2026
From: DUFFNER, MARTIN HERMANN
To: PURAY GMBH
Reel/Frame 074444/0011 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 8, 2023
From: WEBER, CHRISTINA; SCHERZER, DANIEL; PANO PANIAGUA, ERICK DANIEL
To: DUFFNER, MARTIN
Reel/Frame 063562/0816 →
Priority Claims (1)
EP 20205545 · Nov 3, 2020 · regional
Continuity (1)
Related Publication 20230398245A1 · Dec 14, 2023
References Cited (24)
US 5373571A · Reid · 1994 [cited by examiner]
US 5695482A · Kaldany · 1997 [cited by applicant]
US 10279058B2 · Lin et al. · 2019 [cited by applicant]
US 11241585B2 · Long et al. · 2022 [cited by applicant]
US 20040093044A1 · Rychnovsky · 2004 [cited by examiner]
US 20050171520A1 · Farr · 2005 [cited by examiner]
US 20130060188A1 · Bedwell et al. · 2013 [cited by applicant]
US 20180289940A1 · Spotnitz et al. · 2018 [cited by applicant]
US 20190168023A1 · Eltorai · 2019 [cited by applicant]
US 20190192814A1 · Tang et al. · 2019 [cited by applicant]
US 20200276342A1 · Zaborsky · 2020 [cited by applicant]
US 20210244840A1 · Mermel · 2021 [cited by examiner]
US 20220323787A1 · Eltorai et al. · 2022 [cited by applicant]
US 20220387643A1 · Baarman · 2022 [cited by examiner]
EP 1527798A2 · 2005 [cited by applicant]
EP 2744522A1 · 2014 [cited by applicant]
WO 2002102421 · 2002 [cited by applicant]
“Raschotta, R., Silica Fibers, 2006, RP Photonics” (Year: 2006). [cited by examiner]
“International Search Report for Application No. PCT/EP2021/080043, mailed on Jan. 26, 2022”. [cited by applicant]
Buonanno, et al., “207-nm UV Light—A Promising Tool for Safe Low-Cost Reduction of Surgical Site Infections. II: In-Vivo Safety Studies”, PLoS ONE 11(6):e0138418. doi:10.1371/journal.pone.0138418 (Jun. 8, 2016). [cited by applicant]
Buonanno, et al., “Germicidal Efficacy and Mammalian Skin Safety of 222-nm UV Light”, Radiation Research 187, 493-501 (2017). [cited by applicant]
Narita, et al., “Disinfection and healing effects of 222-nm UVC light on methicillin-resistant [cited by applicant]
Welch, et al., “Far-UVC light: A new tool to control the spread of airborne-mediated microbial diseases.”, Scientific Reports, 2018, 8:2752, doi:10.1038/s41598-018-21058. [cited by applicant]
Welch, et al., “Measurement of UV emission from a diffusing optical fiber using radiochromic film”, Photochemistry and Photobiology, vol. 93, Issue 6, Jun. 2, 2017 https://doi.org/10.1111/php.12798. [cited by applicant]