EP2897553A1 - Prothese endo-urinaire - Google Patents
Prothese endo-urinaireInfo
- Publication number
- EP2897553A1 EP2897553A1 EP13762870.7A EP13762870A EP2897553A1 EP 2897553 A1 EP2897553 A1 EP 2897553A1 EP 13762870 A EP13762870 A EP 13762870A EP 2897553 A1 EP2897553 A1 EP 2897553A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- prosthesis
- ring
- guides
- rings
- urinary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
-
- 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
- A61M25/00—Catheters; Hollow probes
- A61M25/0017—Catheters; Hollow probes specially adapted for long-term hygiene care, e.g. urethral or indwelling catheters to prevent infections
-
- 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
- A61F2002/047—Urethrae
-
- 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
-
- 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
- A61F2002/825—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents having longitudinal struts
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0039—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in diameter
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0059—Additional features; Implant or prostheses properties not otherwise provided for temporary
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/006—Additional features; Implant or prostheses properties not otherwise provided for modular
-
- 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
Definitions
- the present invention relates to a so-called endo-urinary prosthesis, intended to keep open a urinary canal such as the urethra or the ureter.
- the ureter is the urinary canal leading urine from the pelvis to the bladder.
- the urethra is the urinary canal below the bladder. He conducts urine during urination to the meatus at the end of the penis in humans. This canal has the particularity of being longer in men than in women.
- Shrinks can be treated to restore the caliber of these channels, but they frequently re-offend.
- Another pathology is the abnormal closure of the sphincter during urination by abnormal neurological control, called vesicosphincteric dyssynergy, which has the effect of blocking partially or completely urination.
- the patient's self-test of a large gauge probe on a regular basis, is sometimes painful, poorly tolerated, exposed to urinary tract infections, and some patients can not or do not wish to self-test.
- the poll by a nurse or a doctor is binding and expensive, so this is rarely done in the long run.
- the other method used is the establishment of an endothurinary prosthesis which keeps open the caliber of the urinary canal to treat, over a period that can be long or even permanently.
- endo-urethral prostheses intended to be placed in the urethra
- endo-ureteral prostheses to be placed in the ureter.
- a first type of known endo-urethral prosthesis is a cylinder made of meshes, generally metallic, interwoven or in the form of a mesh.
- Such a cylinder is introduced into the urethra to apply pressure on its wall.
- a cylinder is introduced into the urethra with a small diameter, then is expanded radially (which causes a shortening of the cylinder).
- the expanded state of the cylinder its meshes are in pressure on the urethral mucosa.
- the second type of known endo-urethral prosthesis is a cylinder made of a contiguous continuous spiral wound wire.
- Such a prosthesis is generally considered temporary and is typically intended to remain in place in the urethra for up to several months.
- the wire is shape memory so that the diameter of the cylinder is reduced to cold, and more important to hot. It is thus possible to dilate the diameter of the prosthesis, but only to a limited extent.
- the prosthesis does not have enough support on the wall and it is possible that it migrates, most often to the bladder.
- Double J A known endo-ureteral prosthesis, called "double J", is a flexible tube bent at both ends, so as to ensure its maintenance. One end is lodged in the kidney and the other in the bladder.
- a metal prosthesis with or without thermal expansion may be considered, but is only indicated in specific and limited cases (benign or malignant fibrosis inside or outside the ureter, and a contraindication to surgery).
- the aim of the invention is to provide a solution making it possible to overcome one or more of the disadvantages mentioned above.
- an endo-urinary prosthesis characterized in that it comprises a set of guides defining in an urinary channel an internal space, and one or more support elements for supporting the internal wall of the canal. urinary catheters, the guides including locking regions for holding the support members in place in a position to support the inner wall of the urinary channel.
- the guides comprise withdrawal zones and projecting zones, said projection zones constituting the locking regions of the guides,
- the support elements are rings,
- FIG. 1 schematically represents a prosthesis according to a first embodiment of the invention, engaged in a urinary canal represented here in longitudinal section,
- FIG. 2 represents a ring of a prosthesis according to the invention, in a compressed position (FIG. 2a) and expanded position (FIG. 2b);
- FIG. 3 shows a pair of rings that can be used in a prosthesis according to a second embodiment of the invention
- FIG. 4 represents a laying tool for fitting a prosthesis according to the first embodiment of the invention.
- FIG. 5a shows a prosthesis according to a third embodiment of the invention, comprising several parts and in an unassembled state
- FIG. 5b shows the prosthesis of Figure 5a in an assembled state.
- a prosthesis 10 according to a first embodiment of the invention is engaged in a urinary channel 20 whose wall 200 is visible in the figure.
- the bladder and the distal end of the prosthesis are located on the left side.
- the proximal end of the prosthesis is located on the right side.
- the prosthesis comprises guides 100 and one or more rings 1 10.
- a single ring 1 10 is visible.
- the prosthesis will include several rings.
- the prosthesis can typically comprise three or more guides.
- the guides are not related to each other, each guide being independent of the other guides.
- the guides are typically made of metal.
- the guides all of which extend in the longitudinal direction of the urinary channel, define between them an internal space 201 which, when the stems are in place, extends into the urinary canal.
- the length of the guides is adapted according to the length of the urinary channel to open.
- the guides are rods.
- rods 100 are not perfectly straight. On the contrary, these rods have a shape that has projecting zones 101 and recessed zones 102.
- the rods thus have a wavy shape.
- Each stem has a distal end 103 shaped towards the lumen of the urinary canal.
- the projections of the different rods are placed opposite each other. This defines in the urinary channel "protruding zones" 21 in the space surrounded by the projections of the stems.
- the stems were brought into the urinary canal in a way that will be discussed later in this text.
- the ring 1 10 is positioned in a projection zone. Its diameter corresponds to the diameter of this zone.
- the stems were first introduced into the urinary canal, and positioned to form the inner space 201, and the zones 21 and 22.
- each ring has then been engaged in the internal space 201 until it is facing a projection zone 21 in which it is desired to position the ring.
- the ring is held in this area by cooperation of shapes with the contours of the protruding area which trap the ring.
- the embodiments of the invention in which the guides 100 have protruding areas and recessed areas constitute a way of forming on the guides ring locking regions. It is possible to form these locking regions in other ways, for example by making notches in the guides, etc.
- the locking regions make it possible to hold the rings in place in a position that allows them to support the inner wall of the urinary canal.
- rings are in the embodiment illustrated in the figures a particular form of support elements.
- each guide and each ring is a separate element, separate from the others and which is not related to it in the structure of the prosthesis.
- the diameter of the ring is also possible to provide for the diameter of the ring to be variable between a reduced diameter and an expanded diameter, and to give the ring its expanded diameter only when the ring is facing the zone. desired projection.
- the ring 1 10 is a broken ring, as represented in FIGS. 2a and 2b.
- Such a ring is not closed: it consists of a wound metal ribbon.
- the tape is coiled and the ring has a reduced diameter.
- the two ends 11 1, 112 of the ribbon overlap.
- the tape is wound without being compressed and the ring has an expanded diameter.
- the two ends of the ribbon do not overlap.
- the compressed ring when positioning the ring in the urinary canal, the compressed ring will be maintained when it passes through the withdrawal zones. Once the ring is in position in the desired protrusion area, compression is released on the ring, which takes its expanded diameter and remains in place in the protruding area whose contours keep the ring in place.
- shape memory rings may be used.
- each rod curved, allows:
- the distal ring can be inserted or immediately attached to the distal end of the rods
- the shape of the stems, with protrusions and recesses, allows:
- the wall of a urinary channel is generally flexible and after the establishment of the prosthesis this wall will come into contact with the rods, including the withdrawal zones.
- the wall portions of the urinary channel in contact with the rods at the retraction zones thus make it possible to lock the stems and therefore the prosthesis.
- the configuration of the prosthesis according to the invention has the advantage of minimizing the area of contact between the prosthesis and the wall of the urinary canal.
- the prosthesis according to the invention also makes it possible to calibrate in the urinary canal a large opening diameter.
- This prosthesis is indeed associated with no limitation of diameter, its diameter being determined by the choice of rings that are chosen to keep open the urinary canal and exert pressure on its wall.
- the prosthesis according to the invention is easy to put in place, but also easy to remove. It suffices to disassemble a prosthesis according to the invention, placed in a urinary canal, performing the reverse operations of those performed for its installation, to achieve easy ablation of the prosthesis.
- the prosthesis according to the invention is easily removable by removing the rings and stems.
- the prosthesis according to the invention has a small surface exposed to calcification of urine.
- the endo-urinary prosthesis described above is suitable for placement in the urethra, or also in the ureter. In all cases, care must be taken to adapt the dimensions of the prosthesis to the dimensions of the urinary canal in which the prosthesis is intended to be placed.
- the prosthesis is put in place by an endoscopic surgical procedure.
- the diameter of the zone of the urethra to be opened is determined during the procedure, by introducing a calibrated diameter probe and / or by vision Endoscopic. This diameter conditions the caliber of the rings of the prosthesis, which will indeed take the same diameter.
- the set of rods is introduced and positioned at first, and the rings are then positioned - and in some cases dilated - opposite desired areas of projection.
- the rods in the urethra can be used a laying tool as shown in Figure 4, although it is only a non-limiting example.
- the distal end is on the right, the proximal end on the left.
- This tool 20 comprises a hollow tube 21, coaxial with a solid bar
- the bar 22 is for example fixed in an end wall 210 of the tube.
- Other means may be provided to make the bar integral with the tube, for example an annular seal between these two elements.
- the bar 22 extends inside the hollow tube to define between the wall of the bar and the inner wall of the hollow tube a space 30.
- the proximal ends of the stems 100 have been fixed in space
- each rod 100 coaxially with the tool 20, desirably positioning each rod 100 at a desired location in the annular space 30, so as to distribute the rods 100 in a desired manner around the ring formed by this space.
- the stems will be evenly distributed around the periphery of the space 30,
- the tool 20 is positioned at the end of the urethra and partly outside the urethra, the distal ends of the rods being engaged in the urethra. It is possible to provide that the distal end of the tube 21 is also engaged in the urethra.
- the tube 21 may be transparent.
- the tool 20 being secured to the rods can be, having marked before introduction into the urethra a marker on the outer wall of the tool, namely for example that the rods were introduced the right length in the urethra when the marker is at the end of the penis.
- the rings are positioned in the desired areas of projection.
- the rings can for example engage in the proximal end 220 of the bar 22 the rings.
- the bar is hollow and allows the passage of the rings in the channel 221 which crosses the bar longitudinally, end to end.
- the rings can be pushed along this channel by any suitable means, for example a plug sliding in the channel.
- Such a longitudinal guide may be slidably mounted relative to the bar 22. In this way one can adjust the position of its distal end in the urethra, as and when the progress of the installation of the rings. It is specified that the rings will be placed starting with the most distal and ending with the most proximal.
- the rings are elastically constrained radially towards their center, to keep a reduced diameter, as long as they have not been positioned in their desired projection area.
- the channel in the center of the bar may have the same reduced diameter, to keep the rings constrained as long as they are engaged in the channel.
- the distal end of the bar can be positioned opposite the desired protrusion area.
- each ring is positioned and released facing the desired projection area.
- the prosthesis including the stems and the rings in place, is then positioned in the urethra.
- the tool 20 can also be used for fitting the urinary prosthesis into another urinary canal than the urethra, for example in the ureter.
- the guides and / or the support members may be made of a heat-sensitive material to allow insertion of the prosthesis into a cylinder, and retraction expansion of the insertion cylinder, for example Nitinol.
- the diameter of the rods of Nitinol will be sufficient to give a good support and a radial resistance to compression.
- the support elements are movable relative to the guides (the rods).
- This mobility of the rings relative to the stems allows insertion of the posterior rings to the stems in the urinary canal.
- This mobility also makes it possible to insert a greater or lesser number of rings depending on the type of channel in which the prosthesis is to be inserted, and allows modular positioning of the rings along the prosthesis in corresponding areas of projections: the prosthesis can then adapt to a wide variety of urinary channels, and the rings can be locked to well-targeted urinary channel positions where it must imperatively be kept open.
- pairs of rings 1 10a, 1 10b consisting of two rings connected by struts 1 100, to minimize the contact surfaces.
- each rod thus comprises at least one permanent locking region which is integral with a ring, the permanent locking region being located at a longitudinal position that is specific to it (any other characteristic of the rods and / or rings according to the first embodiment can also be included in the prosthesis according to the third embodiment).
- a permanent locking region of a guide is defined as a permanent connection to retain a ring reported to this guide even before the insertion of the guide and the ring in a urinary channel.
- This connection may or may not introduce a joint between the rod and the integral ring.
- This permanent connection can thus be a weld point at a protruding zone, which holds the ring in a transverse direction relative to the corresponding rod.
- This permanent connection may alternatively be obtained by an orifice created in a rod, the orifice being traversed by a portion of the ring.
- an orifice allows a mobility at least in rotation of this ring relative to an axis normal to this orifice.
- the winding may comprise a turn of the rod around the ring, or several turns.
- This orifice may for example be obtained by winding a rod around a ring portion, and constitutes a particular protrusion zone of a rod.
- the orifice thus defined around the ring may have an inner perimeter substantially equal to the outer perimeter of the wound ring portion, so as to reduce the dimensions of this orifice.
- the port defined by winding the shank around the ring may extend longitudinally and have a larger perimeter outside the wound ring portion (e.g., the aperture may have an ovoid shape large diameter oriented longitudinally).
- the orifice allows to allow a mobility of the wound ring in longitudinal translation in addition to a mobility of this ring in rotation, without increasing the thickness of the rod, nor the thickness of the prosthesis in a radial direction after assembly of several stems.
- the rods are adapted for each permanent locking region of a rod or facing non-permanent locking regions of other rods.
- the prosthesis may be formed by assembling several parts, each part being formed of a rod and a ring which is integral therewith.
- Each weld of a ring to a respective rod makes it possible to confer on the prosthesis, after assembly, a minimum rigidity in the longitudinal direction of the prosthesis.
- the prosthesis illustrated in FIGS. 5a and 5b comprises a first rod 100, a second rod 100a and a third rod 100b, each rod comprising a succession of three locking regions having respectively a first, a second and a third longitudinal position.
- the first rod 100 comprises a first permanent locking region 1012 located at the first longitudinal position and integral with a first ring 1 10.
- the second rod 100a comprises a second permanent locking region 1012a located at the second longitudinal position and secured to a second ring 110a.
- the third rod 100b has a third permanent locking region 1012b located at the third longitudinal position and secured to a third ring 110b.
- the ring connected to each rod can be received in the non-permanent locking zones of the other rods which are located at the same longitudinal position.
- each non-permanent locking region 1014, 1014a, 1014b is a projection area having an oval open-ring shape of dimensions adapted to receive the ring 110, 110a, 1 10b respectively.
- Each non-permanent locking region has an aperture extending along the shank along a length adapted to allow, on the one hand, insertion of the ring into the protruding zone by forced separation of the edges of this opening, and on the other hand to retain the ring in the groin area, after an elastic return of the edges.
- the insertion of the ring in the projection on the other rods allows to give a certain flexibility of curvature while keeping the shape and the holding of the prosthesis after assembly.
- the prosthesis can thus be positioned comfortably in a urinary channel that is not perfectly rectilinear, while maintaining a rigidity provided by having soldered each rod to a respective ring.
- each projection zone of a non-permanent locking region may be chosen greater than the diameter of the ring to be received, so as to give the prosthesis a mobility after assembly.
- Z-shaped protruding areas can be added to the stems, in case the prosthesis should be made more flexible.
- each permanent locking region 1012, 1012a, 1014b is also a projecting zone having a ring shape open oval dimensions adapted to receive the ring 110, 1 10a, 110b respectively.
- the three rods can be equally spaced from each other on a circular cross section, or be distributed differently if one wants to give more flexibility in a particular axis.
- this second embodiment can be extended to N rods each comprising at least N locking regions including at least one permanent locking region, N being greater than or equal to 3.
- At least one of the rings is integral with each rod, and articulated or not to each rod.
- This integral ring may be the distal ring, that is to say the ring placed in the projection closest to the distal end of the prosthesis, the proximal ring, that is to say the ring placed in the projection closest to the proximal end of the prosthesis, and / or any intermediate ring located between the distal ring and the proximal ring, in the case where the prosthesis comprises several rings.
- the preferentially articulated solidarity of rings makes it possible in particular to facilitate the insertion of the stems.
- the stems can indeed be inserted into a urinary channel while the at least one integral ring is in a folded position. Then, the stems can be shaped by positioning the integral rings in an unfolded position, i.e., in a position to hold the urinary channel open.
- each locking region is a permanent locking region, integral with a ring.
- N being the number of stems of the prosthesis, each ring is then permanently connected to N rods, according to the connections already described in the context of the second embodiment (solder point, orifice obtained by winding, etc.).
- each connection between a ring and a rod can be obtained by winding, each winding defining the longitudinally extending ovoid orifice described above.
- the prosthesis thus obtained is thus fully articulated, and each ring of the prosthesis is movable in longitudinal translation relative to the rods.
- the stems can thus be positioned in a urinary canal, before adjusting more finely the positioning of each ring with respect to the stems in this same channel.
- FIGS. 2a and 2b may be included in the third and fourth prosthesis embodiments described.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Pulmonology (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (AREA)
- Gastroenterology & Hepatology (AREA)
- Epidemiology (AREA)
- Urology & Nephrology (AREA)
- Biophysics (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1258756A FR2995523A1 (fr) | 2012-09-18 | 2012-09-18 | Prothese endo-urethrale |
FR1350577A FR2995524B1 (fr) | 2012-09-18 | 2013-01-23 | Prothese endo-urinaire |
PCT/EP2013/069395 WO2014044718A1 (fr) | 2012-09-18 | 2013-09-18 | Prothese endo-urinaire |
Publications (1)
Publication Number | Publication Date |
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EP2897553A1 true EP2897553A1 (fr) | 2015-07-29 |
Family
ID=47257925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13762870.7A Withdrawn EP2897553A1 (fr) | 2012-09-18 | 2013-09-18 | Prothese endo-urinaire |
Country Status (7)
Country | Link |
---|---|
US (1) | US9889026B2 (fr) |
EP (1) | EP2897553A1 (fr) |
JP (1) | JP2015529120A (fr) |
CN (1) | CN105073065A (fr) |
CA (1) | CA2885261C (fr) |
FR (2) | FR2995523A1 (fr) |
WO (1) | WO2014044718A1 (fr) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105708588A (zh) * | 2016-01-19 | 2016-06-29 | 杨首男 | 一种可降解的前列腺支架 |
US20170231650A1 (en) * | 2016-02-16 | 2017-08-17 | Peter Sayet | Endoscope Attachable Cystolith Entrapment Apparatus |
CN106726036B (zh) * | 2016-12-30 | 2019-02-05 | 山东中保康医疗器具有限公司 | 可降解镁合金尿道支架 |
CN106691646B (zh) * | 2016-12-30 | 2019-03-12 | 山东中保康医疗器具有限公司 | 可降解镁合金输尿管支架 |
CN111494072A (zh) * | 2019-01-29 | 2020-08-07 | 上海氪励铵勤科技发展有限公司 | 男性后尿道切除重建手术术中植入物及其植入方法 |
CN110227207B (zh) * | 2019-07-16 | 2024-07-23 | 南微医学科技股份有限公司 | 一种医用引流支架 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2528273C3 (de) * | 1975-04-12 | 1981-07-23 | Fabian, Karl, Dr.Med., 5300 Bonn | Katheter |
US5269802A (en) * | 1991-09-10 | 1993-12-14 | Garber Bruce B | Prostatic stent |
DE69502746T2 (de) * | 1994-02-25 | 1998-10-01 | David R Fischell | Stent mit einer Vielzahl geschlossener kreisförmiger Strukturen |
FR2750853B1 (fr) * | 1996-07-10 | 1998-12-18 | Braun Celsa Sa | Prothese medicale, en particulier pour anevrismes, a liaison perfectionnee entre sa gaine et sa structure |
JP3645399B2 (ja) * | 1997-06-09 | 2005-05-11 | 住友金属工業株式会社 | 血管内ステント |
US6709465B2 (en) * | 1999-03-18 | 2004-03-23 | Fossa Medical, Inc. | Radially expanding ureteral device |
US6258117B1 (en) * | 1999-04-15 | 2001-07-10 | Mayo Foundation For Medical Education And Research | Multi-section stent |
US6929663B2 (en) * | 2003-03-26 | 2005-08-16 | Boston Scientific Scimed, Inc. | Longitudinally expanding medical device |
US7632299B2 (en) * | 2004-01-22 | 2009-12-15 | Boston Scientific Scimed, Inc. | Medical devices |
EP2533730A1 (fr) * | 2010-02-10 | 2012-12-19 | Apertomed, L.L.C. | Méthodes, systèmes et dispositifs pour le traitement de l'insuffisance veineuse cérébrospinale et de la sclérose en plaques |
US9326870B2 (en) * | 2010-04-23 | 2016-05-03 | Medtronic Vascular, Inc. | Biodegradable stent having non-biodegradable end portions and mechanisms for increased stent hoop strength |
-
2012
- 2012-09-18 FR FR1258756A patent/FR2995523A1/fr not_active Withdrawn
-
2013
- 2013-01-23 FR FR1350577A patent/FR2995524B1/fr active Active
- 2013-09-18 CN CN201380060105.XA patent/CN105073065A/zh active Pending
- 2013-09-18 EP EP13762870.7A patent/EP2897553A1/fr not_active Withdrawn
- 2013-09-18 US US14/428,958 patent/US9889026B2/en not_active Expired - Fee Related
- 2013-09-18 WO PCT/EP2013/069395 patent/WO2014044718A1/fr active Application Filing
- 2013-09-18 CA CA2885261A patent/CA2885261C/fr not_active Expired - Fee Related
- 2013-09-18 JP JP2015532396A patent/JP2015529120A/ja active Pending
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2014044718A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20150359645A1 (en) | 2015-12-17 |
US9889026B2 (en) | 2018-02-13 |
JP2015529120A (ja) | 2015-10-05 |
FR2995523A1 (fr) | 2014-03-21 |
CA2885261C (fr) | 2021-04-06 |
WO2014044718A1 (fr) | 2014-03-27 |
CA2885261A1 (fr) | 2014-03-27 |
FR2995524A1 (fr) | 2014-03-21 |
CN105073065A (zh) | 2015-11-18 |
FR2995524B1 (fr) | 2016-01-01 |
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