WO2005102217A1 - Ureteric stent - Google Patents
Ureteric stent Download PDFInfo
- Publication number
- WO2005102217A1 WO2005102217A1 PCT/GB2005/001461 GB2005001461W WO2005102217A1 WO 2005102217 A1 WO2005102217 A1 WO 2005102217A1 GB 2005001461 W GB2005001461 W GB 2005001461W WO 2005102217 A1 WO2005102217 A1 WO 2005102217A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stent
- ureter
- length
- ureteric
- stents
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
- A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
- A61M27/008—Implant devices for drainage of body fluids from one part of the body to another pre-shaped, for use in the urethral or ureteral tract
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2002/048—Ureters
Definitions
- the invention relates to stents, and particularly to ureteric stents.
- Stents are medical devices which are inserted into tubes in the body, for example an artery, to maintain a specified width for the artery.
- Ureteric stents are inserted into the ureter, the tube that joins the kidney to the bladder.
- Ureteric stents are used to prevent or treat obstruction of the ureter resulting from many causes, includes stones and tumours.
- ureteric stents extend all the way from the kidney to the bladder and are left in place for long periods of time, or even permanently. Encrustations may build up on the stents and the conventional stents also cause side effects.
- the invention provides a ureteric stent having a length which is less than half that of the ureter.
- the stent has a length substantially equal to one third of the length of the ureter.
- the stent has means to retain the stent in a predetermined position within the ureter.
- the means to retain the stent in position may comprise a portion of the stent which exerts sideways pressure on the wall of the ureter, so that the stent is maintained in position by frictional forces.
- the said portion of the stent may comprise a spiral coil.
- the spiral coil is arranged at one end of the stent.
- One embodiment of stent, for use in the upper or middle third of the ureter may have a spiral coil at each end.
- Each coil may have a maximum diameter of from 1cm to 2cm and a length of from 1cm to 2cm.
- a preferred diameter is 6 French and a preferred length is 1cm.
- the stent may have a substantially straight central region.
- the central region may have a length of from 3 to 6cms.
- the lower end of the stent may have one or more threads attached thereto.
- the threads may be of Nylon.
- Each end of the central region may be provided with a radio-opaque marker.
- the stent may be manufactured from PTFE or other biocompatible polymer material.
- Figure 1 is a perspective view of one embodiment of stent according to the invention.
- FIG 2 is a perspective view of a second embodiment of stent according to the invention.
- the embodiment of ureteric stent shown in Figure 1 comprises two spiral coils 10, 11 separated by a central straight section 12.
- a radio opaque marker 13 At each end of the straight section 12 is a radio opaque marker 13.
- Nylon threads 14 are attached to the lower end of the stent.
- the stent is manufactured from PTFE (e.g. Percuflex) and is self-supporting with the configuration shown in Figure 1.
- PTFE e.g. Percuflex
- the stent shown in Figure 1 can be inserted into the ureter and in use this embodiment of stent will be positioned in the upper or middle third of the ureter.
- the larger diameter portions of the stent maintain the ureter with a given width.
- the spiral coils 10 and 11 apply fight pressure against the walls or the ureter and the stent is thus maintained in position, at the desired location, by frict ⁇ al forces.
- the stent can be inserted in a conventional manner, for example over a conventional 0.038 inch diameter guide wire, using a conventional pusher.
- the radio opaque markers 13 enable the location of the stent within the body to be tracked with conventional equipment
- the nylon threads 14 facilitate extraction of the stent, for example using a flexible cystoscope.
- the embodiment of stent shown in Figure 2 has a single spiral coil 10 attached to a central region 12. Radio opaque markers 13 are again present. At the lower end of the stent shown in Figure 2 there is a bladder segment 15 to which is attached nylon threads 14.
- the embodiment of stent shown in Figure 2 is designed for use in the lower third of the ureter.
- the bladder segment 15 comprises a pigtail shape as used on conventional ureteric stents.
- the retention effect of the spiral coils is only exhibited within the ureter, where the light pressure can be applied against the wall of the ureter.
- the lower end of the stent is to lie within the bladder so there is no advantage in using a spiral coil. It is sufficient to use the conventional pigtail which resists movement of the lower end of the stent out of the bladder.
- Each spiral coil has a length of 1cm and a maximum diameter of 1cm.
- Each central region 12 has a length of from 3 to 6 cms.
- the stents according to the invention occupy only the obstructed segment of the ureter and this reduces the risk of irritation and side effects.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0409031A GB0409031D0 (en) | 2004-04-23 | 2004-04-23 | Stents |
GB0409031.2 | 2004-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005102217A1 true WO2005102217A1 (en) | 2005-11-03 |
Family
ID=32344244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2005/001461 WO2005102217A1 (en) | 2004-04-23 | 2005-04-15 | Ureteric stent |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB0409031D0 (en) |
WO (1) | WO2005102217A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8007702B2 (en) | 2002-10-30 | 2011-08-30 | Boston Scientific Scimed, Inc. | Methods of manufacturing linearly expandable ureteral stents |
ES2472122A1 (en) * | 2012-12-27 | 2014-06-27 | Fundaci�N Centro De Cirug�A M�Nima Invasi�N Jes�S Us�N | Self-retentive and anti-reflux ureteral catheter |
US20150142127A1 (en) * | 2012-06-08 | 2015-05-21 | University Hospitals Health System, Inc. | Ureteral stent for placement in a kidney and bladder |
US9254203B2 (en) | 2012-08-20 | 2016-02-09 | Boston Scientific Scimed, Inc. | Delivery device |
CN109875733A (en) * | 2017-12-01 | 2019-06-14 | 捷锐士阿希迈公司(以奥林巴斯美国外科技术名义) | Ureter bracket |
CN113081419A (en) * | 2021-03-01 | 2021-07-09 | 东华大学 | Developable recyclable self-expanding ureteral stent and preparation method thereof |
US11154391B2 (en) | 2016-05-06 | 2021-10-26 | University Hospitals Health Systems, Inc. | Ureteral stent for placement in a kidney and bladder |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661603A1 (en) * | 1990-05-02 | 1991-11-08 | Coralines Abj Division Sarl | Prosthesis for treating stenoses in the channels of the body |
US5261916A (en) * | 1991-12-12 | 1993-11-16 | Target Therapeutics | Detachable pusher-vasoocclusive coil assembly with interlocking ball and keyway coupling |
WO2000066032A1 (en) * | 1999-04-30 | 2000-11-09 | Applied Medical Resources Corporation | Improved ureteral stent system apparatus and method |
US6332892B1 (en) * | 1999-03-02 | 2001-12-25 | Scimed Life Systems, Inc. | Medical device with one or more helical coils |
US20030109930A1 (en) * | 2001-12-11 | 2003-06-12 | Scott Bluni | Ureteral stents and related methods |
US6656146B1 (en) * | 1995-11-07 | 2003-12-02 | Scimed Life Systems, Inc. | Medical device with tail(s) |
-
2004
- 2004-04-23 GB GB0409031A patent/GB0409031D0/en not_active Ceased
-
2005
- 2005-04-15 WO PCT/GB2005/001461 patent/WO2005102217A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2661603A1 (en) * | 1990-05-02 | 1991-11-08 | Coralines Abj Division Sarl | Prosthesis for treating stenoses in the channels of the body |
US5261916A (en) * | 1991-12-12 | 1993-11-16 | Target Therapeutics | Detachable pusher-vasoocclusive coil assembly with interlocking ball and keyway coupling |
US6656146B1 (en) * | 1995-11-07 | 2003-12-02 | Scimed Life Systems, Inc. | Medical device with tail(s) |
US6332892B1 (en) * | 1999-03-02 | 2001-12-25 | Scimed Life Systems, Inc. | Medical device with one or more helical coils |
WO2000066032A1 (en) * | 1999-04-30 | 2000-11-09 | Applied Medical Resources Corporation | Improved ureteral stent system apparatus and method |
US20030109930A1 (en) * | 2001-12-11 | 2003-06-12 | Scott Bluni | Ureteral stents and related methods |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9060888B2 (en) | 2002-10-30 | 2015-06-23 | Boston Scientific Scimed, Inc. | Method of disposing a linearly expandable ureteral stent within a patient |
US8241548B2 (en) | 2002-10-30 | 2012-08-14 | Boston Scientific Scimed, Inc. | Methods of manufacturing linearly expandable ureteral stents |
US8568643B2 (en) | 2002-10-30 | 2013-10-29 | Boston Scientific Scimed, Inc. | Methods of manufacturing linearly expandable ureteral stents |
US10201441B2 (en) | 2002-10-30 | 2019-02-12 | Boston Scientific Scimed, Inc. | Linearly expandable ureteral stent |
US8007702B2 (en) | 2002-10-30 | 2011-08-30 | Boston Scientific Scimed, Inc. | Methods of manufacturing linearly expandable ureteral stents |
US20150142127A1 (en) * | 2012-06-08 | 2015-05-21 | University Hospitals Health System, Inc. | Ureteral stent for placement in a kidney and bladder |
US9750621B2 (en) * | 2012-06-08 | 2017-09-05 | University Hospitals Cleveland Medical Center | Ureteral stent for placement in a kidney and bladder |
US11278436B2 (en) | 2012-06-08 | 2022-03-22 | University Hospitals Health System, Inc. | Ureteral stent for placement in a kidney and bladder |
US9254203B2 (en) | 2012-08-20 | 2016-02-09 | Boston Scientific Scimed, Inc. | Delivery device |
ES2472122A1 (en) * | 2012-12-27 | 2014-06-27 | Fundaci�N Centro De Cirug�A M�Nima Invasi�N Jes�S Us�N | Self-retentive and anti-reflux ureteral catheter |
US11154391B2 (en) | 2016-05-06 | 2021-10-26 | University Hospitals Health Systems, Inc. | Ureteral stent for placement in a kidney and bladder |
CN109875733A (en) * | 2017-12-01 | 2019-06-14 | 捷锐士阿希迈公司(以奥林巴斯美国外科技术名义) | Ureter bracket |
US10933227B2 (en) | 2017-12-01 | 2021-03-02 | Gyrus Acmi, Inc. | Ureteral stent |
US11779737B2 (en) | 2017-12-01 | 2023-10-10 | Gyrus Acmi, Inc. | Ureteral stent |
CN113081419A (en) * | 2021-03-01 | 2021-07-09 | 东华大学 | Developable recyclable self-expanding ureteral stent and preparation method thereof |
CN113081419B (en) * | 2021-03-01 | 2022-04-29 | 东华大学 | Developable recyclable self-expanding ureteral stent and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
GB0409031D0 (en) | 2004-05-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10390928B2 (en) | Open lumen stent | |
US8252065B2 (en) | Ureteral stent with conforming retention structure | |
EP0808611B1 (en) | Anti-reflux ureteral stent | |
WO2005102217A1 (en) | Ureteric stent | |
US7682401B2 (en) | Ureteral stent | |
US20030109930A1 (en) | Ureteral stents and related methods | |
US20030163204A1 (en) | Stent | |
JP2005312898A (en) | Improved stent | |
US8506647B2 (en) | System for maintaining body canal patency | |
AU2016263304A1 (en) | Stent and method of use | |
US20210267780A1 (en) | Solid Wire Ureteral Stent | |
US10398541B2 (en) | System and method for use of flexible anti-reflux ureteral stent | |
EP2023995B1 (en) | Prostatic stent | |
US10070978B2 (en) | Stent pusher assembly | |
US11564820B2 (en) | Ureteral stent and related methods | |
Abbas et al. | Pediatric Ureteral Stents | |
EP2749311B1 (en) | Self-retentive and anti-reflux ureteral catheter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
122 | Ep: pct application non-entry in european phase |