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WO1999008623A1 - Dispositif pour deformer une piece tubulaire de type reticulaire deformable dans le sens radial - Google Patents

Dispositif pour deformer une piece tubulaire de type reticulaire deformable dans le sens radial Download PDF

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Publication number
WO1999008623A1
WO1999008623A1 PCT/DE1998/002281 DE9802281W WO9908623A1 WO 1999008623 A1 WO1999008623 A1 WO 1999008623A1 DE 9802281 W DE9802281 W DE 9802281W WO 9908623 A1 WO9908623 A1 WO 9908623A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
clamping
jaw
clamping jaw
legs
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.)
Ceased
Application number
PCT/DE1998/002281
Other languages
German (de)
English (en)
Inventor
Rainer Ziegerer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualimed Innovative Medizinprodukte GmbH
Original Assignee
Qualimed Innovative Medizinprodukte GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qualimed Innovative Medizinprodukte GmbH filed Critical Qualimed Innovative Medizinprodukte GmbH
Priority to DE19881132T priority Critical patent/DE19881132B4/de
Publication of WO1999008623A1 publication Critical patent/WO1999008623A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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
    • 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
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A61F2/9522—Means for mounting a stent or stent-graft onto or into a placement instrument
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/18—Adjusting means for the operating arms
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/005—Rosette-shaped, e.g. star-shaped
    • 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
    • A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2240/001—Designing or manufacturing processes

Definitions

  • the invention relates to a device with which grid-like pipe sections can be radially deformed.
  • Such pipe sections are known, for example, in medical technology as a so-called stent. They are inserted into human blood vessels (arteries) and serve as internal support bodies to keep the cross section of the veins open.
  • a stent is pulled onto a catheter and inserted into the vein, at the front end of which there is a balloon.
  • liquid is introduced into the balloon from the outside, thereby expanding the balloon.
  • the stent inevitably expands in cross-section, so that it can lay against the wall of the vein from the inside.
  • the balloon shrinks again in cross-section, so that it loses its seat on the inside of the stent.
  • the balloon is then pulled out of the vein backwards.
  • the stent remains in the vein as a support body.
  • the stent may namely be seated when the catheter is inserted don't lose on the balloon. So that the stent can expand not only somehow but with a circular cross-section within a vein, it must press-fit onto the balloon with an exactly circular cross-section.
  • the circular cross-section of the stent is smaller or larger, depending on the position it is in: whether it is positioned on the balloon with a small cross-section, or whether it is placed inside a vein with a larger cross-section. It is now known to use pliers-like tools to press the stent onto the balloon.
  • the invention has for its object to provide a way to press a stent while maintaining a circular cross-section on a tubular tube from the outside.
  • the invention includes that circumferentially acting on the stent from the outside wall parts which are formed in a meandering shape in the circumferential direction. This enables a radial deformation of these walls and in turn a radial reduction in the circular cross section of the stent.
  • meandering walls can be formed with a ver ormMech.
  • the deformable body can then be deformed accordingly with the aid of a device. The deforming body is inserted into a plier-like tool and correspondingly radially deformed by compressing the plier-like tool.
  • the meandering walls preferably have a constant thickness at least in their outer wall and winding regions in the radial direction. In this way, a uniform and uniform cross-sectional narrowing of the shaped body is possible in such a way that when the shaped body is correspondingly reduced in cross-section, the shaped body retains its circular cross-section, albeit a reduced circular cross-section.
  • the stent placed inside the deformable body is thereby deformed from a larger circular cross-section to a smaller circular cross-section.
  • the deformable body can have outer wall regions oriented obliquely to its longitudinal extent. Accordingly, the tool then also has clamping jaws which can be placed against these obliquely aligned outer wall regions, so that the clamping jaws can deform the deforming body in the radial direction by compressing the tool.
  • At least one of the clamping jaws can have an annular contact surface on the deformable body. Accordingly, the deformable body then has an approximately conical surface, at least on its side facing this clamping jaw.
  • the deforming body can be exchangeably mounted in the tool.
  • the deformable body and not also the forceps-like tool may need to be adapted to the respective stent.
  • the tool receiving the deformable body can be designed in different ways. Three different tools are shown as examples in the drawing.
  • two rod-shaped legs which are connected to one another in an articulated manner can accommodate a deforming body between them.
  • the two rod-shaped legs are in turn articulated to the two clamping legs of a U-shaped bracket at their end opposite the common hinge point.
  • the U-shaped bracket By pressing the U-shaped bracket together, the two rod-shaped legs are moved towards one another and the deforming body placed between them is reduced in cross-section.
  • the clamping jaws of the tool are detachably present in the tool.
  • the one clamping jaw can be fixed in a base body of the tool and can be firmly connected to a handle part, while the other clamping jaw is slidably adjustable on this base body.
  • the movable clamping jaw can be provided with a rack design, in which a toothed ring section formed on a swivel handle engages. By pivoting the swivel handle, the ring gear section is rotated and the movable clamping jaw with its rack design is displaced linearly, relative to the stationary other clamping jaw.
  • rack design in which a toothed ring section formed on a swivel handle engages.
  • this tool can also be designed as a table model, for example, instead of a manually operated pliers-like tool, as is also shown in more detail by an exemplary embodiment shown in the drawing.
  • the two jaws can be held linearly adjustable on longitudinal guides. While one clamping jaw is designed to be adjustable in the longitudinal direction but fixable in position, the other clamping jaw can be fastened to an abutment which can be adjusted in the longitudinal direction via a knee joint. The knee joint can be actuated by a lever device and this clamping jaw can thereby be adjusted relative to the abutment. With this adjustment, the mutual distance between the two clamping jaws held on the longitudinal guides changes.
  • the maximum movement of the clamping jaw connected via the knee joint can be variably adjusted by adjusting the abutment. The maximum adjustment path depends on the desired size of the deformation to be applied to the respective stent in the sense of a reduction in cross-section.
  • 1.1 is a partially sectioned side view of a first device according to the invention
  • FIG. 3 shows the stent according to FIG. 2 in its reduced state in cross-section compared to FIG. 2, pressed onto a tube with the aid of the device according to FIG. 1,
  • FIG. 4 is a side view of a deformable body which is radially deformable in the device according to FIG. 1,
  • FIG. 5 shows a cross section through the deformable body according to FIG. 4,
  • FIG. 6 shows a cross section of a second embodiment of a deformable body
  • FIG. 7 shows a cross section of a third embodiment of a deformable body
  • 8.1 is a partially sectioned side view of a second device according to the invention, 8.2 shows a view of this second device rotated by 90 degrees compared to FIG. 8.1,
  • 9.1 is a partially sectioned side view of a third device according to the invention.
  • FIG. 9.2 is a plan view of the device according to FIG. 9.1,
  • 9.3 shows a section along the line 9.3-9.3 of FIGS. 9.1 and
  • 9.4 shows a section along the line 9.4-9.4 of FIG. 9.1.
  • a device shown in Fig. 1 for radially deforming a grate-like pipe piece consists of a collet 10 and a tubular deforming body 12. By compressing the collet 10, the deforming body 12 in the radial direction, that is perpendicular to the longitudinal axis 14 of it in the longitudinal direction through it through duct-like through opening 16 deformed.
  • the collet 10 has a U-shaped bracket 18. By pressing this bracket 18, its two bracket legs 20, 22 are moved towards each other.
  • a spacer screw 21 is adjustably mounted in one bracket 18.
  • the position of the screw head 23 relative to the inner surface 25 of the opposite, left arm leg 22 can be adjusted variably in a manner known per se by means of an adjusting wheel 24.
  • This allows the distance 26 between the two legs 20, 22 to be set to different sizes.
  • the distance 26 defines the maximum distance by which the two legs 20, 22 can be moved towards one another in the region of the screw head 23.
  • a cylindrical joint socket 30, 32 is formed in each case in the upper region of the two legs 20, 22.
  • a cylindrical joint bone 34, 36 sits in each of these joint sockets 30, 32.
  • the two joint bones 34, 36 form the respective end of two rod-shaped legs 40, 42. These two legs 40, 42 are articulated to one another at their upper end in the drawing in a common joint 56.
  • the right leg 40 in the drawing has a design in the manner of an articulated bone 44, which is seated in a correspondingly shaped joint socket 46 of the other leg 42.
  • the two legs 40, 42 are screwed to the two stirrup legs 20, 22 by means of a respective screw 48, 50. After loosening these screws 48, 50, the two legs 40, 42, which form an insert 52, can be released from the U-shaped bracket 18. The two legs 40, 42 can then be swung open about their common joint 56 and a deforming body 12 positioned between them can be removed or a corresponding deforming body 12 can be inserted between their legs 40, 42.
  • the tubular piece which is radially deformable by the deformable body 12 and is similar to a grating is shown in the form of a so-called stent 60 in FIGS. 2 and 3.
  • This stent 60 is shown in FIG. 2 within a wire 62 indicated by dash-dotted lines. It has a correspondingly large diameter D1.
  • the stent 60 has a smaller diameter D2.
  • the stent shown in FIG Vein inserted and brought into its shape shown in Fig. 2 by expanding the tube 64.
  • the expansion of a stent is known per se.
  • the stent 60 is deformed in its state shown in FIG. 3 with the aid of the deforming body 12 shown in FIG. 4.
  • the deformable body 12 (FIG. 4) has a central through opening 16, which has different thicknesses
  • Wall areas is surrounded.
  • the outer diameter D3 is constant in the longitudinal direction in the region 68. In the middle area, this diameter D3 widens to a maximum diameter D4.
  • the surface structure of the deformed body 12 is frustoconical.
  • the wall areas 72 of the deformable body 12 are meandering in the direction of its circumference.
  • outer wall arches 74 are connected in a loop with inner wall arches 76.
  • one leg 78 of an outer wall arch is at the same time leg 80 of an inner wall arch 76.
  • An outer gap 82 is formed between adjacent outer wall arches.
  • an inner gap 84 is also present between inner wall arches 76.
  • the width of the outer and inner gaps 82, 84 is a measure of the possible movement of the outer and inner wall arches 74, 76 in the radial direction inwards.
  • 6 shows a deforming body 12.1 which is somewhat different from that of FIGS. 4 and 5. It differs from the deformable body 12 in the design of its outer and inner wall arches. Thus, the legs 78.1 of the outer wall arches 74.1 are not flat, but curved. As a result, the outer gap 82.1 widens inwards toward a chamber 90. While in the deformed body 12 the inner gap 84 widened outward into an approximately triangular inner chamber 86, a comparable chamber 86.1 in FIG. 6 is relatively small and is present in the web area 88 of the outer wall arch 74.1.
  • the deformation of the deformed body 12.1 is similar to that of the deformed body 12.
  • the through opening 16 in the interior of the deformed body 12.1 is thereby smaller in cross-section in terms of circle in the same way as is the case with the deformed body 12.
  • annular wall parts 92, 94 which are each present in the two legs 40, 42 of the insert 52 (FIG. 1.1). These two annular wall parts 92, 94 delimit a corresponding opening 96, 98 in each of the two legs 40, 42.
  • the deformation of the deformable body 12 can be limited in such a way that the stent 60 receives its orientation shown in FIG. 3, which is circular in cross section, and press-fits onto the tube 64 in this circular orientation.
  • FIG. 7 shows a deformable body 12.2, which is basically the same as the previously mentioned deformed body 12 and 12.1. There is a significant difference from those already mentioned above
  • the through opening 16 of the deformed body 12.2 therefore remains a circular through opening even after the radial compression of the deformed body 12.2.
  • Diameter D4 (Fig.9.1). Areas 68.2 are formed between the middle areas 104, in which there is a smaller diameter than the diameter D4.
  • the stent has one in its two end regions 68 Outer diameter D3, which in the present case is once again smaller than the outer diameter between the central regions 104.
  • Such a deformable body 12.2 is shown in the tool 10.2 shown in FIG. 9, which is a table tool and is described in more detail below in connection with FIG. 9.
  • FIG. 8 shows a pliers-like tool 10.1 which is modified compared to the tool 10.
  • This tool 10.1 has a base body 110 to which a right clamping jaw 112 is attached in one piece.
  • a left clamping jaw 114 is guided in a longitudinally displaceable manner in a transverse recess 116.
  • the transverse recess 116 has projecting and recessed outer walls 118, between which the left clamping jaw 114 is held so as to be adjustable with a lower rack configuration 120.
  • a left grip part 122 is fastened in the base body 110.
  • This grip part 122 projects with an end pin 124 into a groove 126 of the left clamping jaw 114.
  • the left clamping jaw 114 can be adjusted along the groove 126.
  • a toothed ring section 128 of a right-hand grip part 130, meshing, projects into the rack design 120 from below.
  • the ring gear section 128 can be rotated and the rack section 128 can thereby be displaced to the right or left.
  • the left clamping jaw 114 In the solid position of the grip part 130, the left clamping jaw 114 is located as close as possible to the right clamping jaw 112.
  • the left clamping jaw 114 In the maximally pivoted position of the grip part 130, which is shown in broken lines with the reference number 130.1 in FIG. 8.1, the left clamping jaw 114 has an extreme wide distance from the right jaw 112. This position of the left clamping jaw 114 is also shown in dash-dot lines with 114.1.
  • the minimum mutual distance between the two clamping jaws 112 114 is ensured by the mutual contact of a rod-shaped member 132 held in the left clamping jaw 114 against the force of a spring 130 on different peripheral surfaces 134 of a rotating body 136 located in the right clamping jaw 112.
  • the peripheral surfaces 134.1, 134.2 to 134.6 are at different distances from the axis of rotation 138 of the rotating body 136.
  • the link 132 projects into the right clamping jaw 112 to different degrees - to the right in the drawing.
  • the minimum distance 140 between the two clamping jaws 112, 114 can thereby be determined.
  • Annular wall parts 92, 94 are formed in the upper end regions of the two clamping jaws 112, 114, as is also the case with the insert 52 (FIG. 1). These annular wall parts 92, 94 form the pressure surfaces which bear against the inclined wall regions 72 of the deforming body 12 positioned between the clamping jaws 112, 114.
  • the rotating body 136 can be turned from the outside via a turning handle 142, so that its different circumferential surfaces can be brought into pressing contact with the link 132.
  • This rotary handle 142 has an outward Grip bar 144 projecting from the right clamping jaw 112.
  • the tool 10.2 shown in FIG. 9 is constructed as a so-called table model.
  • the tool 10.2 has a supporting frame 150 which is designed to be stable with a left block 152 and a right block 154. Between the blocks 152, 154, two guide shafts 156, 158 aligned parallel to one another are supported. Two jaws 160, 162 can be displaced along these guide shafts 156, 158.
  • the left jaw 160 shown in FIGS. 9.1 and 9.2 can be positioned in a latching manner in notches 164 present in sections on the supporting frame 150.
  • a locking position of this jaw 160 is shown in FIG. 9.4.
  • a detent lever 166 which is pivotably mounted about the one guide shaft 158, is seated with a tip 167 formed obliquely upwards. By lifting the tip 167 into the position 166.1 of the locking lever 166 shown in broken lines, the locking lever 166 can be shifted from its position shown in FIGS. 9.1 and 9.2 on the guide shafts 156, 158 and then inserted, for example, into an adjacent notch 164.
  • the jaw 160 is firmly positioned on the guide shafts 156, 158.
  • the jaw 160 has a recess with an annular wall part 94, as has already been described for the tools 10 and 10.1.
  • the other jaw 162 is mounted on the two guide shafts 156, 158 so as to be longitudinally displaceable at a distance from the jaw 160.
  • This jaw 162 also has a recess with an annular wall part 92 in its upper region.
  • a deforming body such as the deforming body 12.2 shown in FIG. 9 can be positioned between the annular wall parts 92, 94 of the two jaws 160, 162.
  • An actuating lever 166 has an articulated bone 168 at the end, which sits in an articular socket 170.
  • the joint socket 170 is molded into the right jaw 162.
  • the actuating lever 166 rests on a pressure pin 174 from above.
  • the pressure pin 174 is mounted in the right jaw 162 and is pressed against the projection 172 from below by means of a pressure spring 176.
  • a joint socket 178 is formed in the end region of the actuating lever 166.
  • a rod-shaped connecting member 180 with an articulated bone 182 formed on the end engages in this joint socket 178.
  • the articulated bone 184 of the connecting member 180 formed at its other end engages in an articulated socket 186 which is molded into an abutment part 190.
  • the abutment part 190 is on the two guide shafts
  • the distance between the abutment part 190 and the right jaw 162 is determined by the mutual alignment of the actuating lever 166 and the connecting member 180.
  • the actuation lever 166 In the position shown in FIG. 9.1, the actuation lever 166 is at a maximum pressed down. As a result, the right jaw 162 has its maximum distance from the abutment part 190. If the actuating lever 166 is pivoted upwards, which is shown in dash-dotted lines with 166.1, the projection 172 of the actuating lever 166 rises upwards and pivots the connecting member 180 clockwise around its joint bone 184.
  • the connecting member 180 By tilting the connecting member 180, the distance between the right joint bone 184 of the connecting member 180 and the joint bone 168 of the actuating lever 166 is shortened. Since the two joint bones 184, 168 are articulated on the one hand in the abutment part 190 and on the other hand on the right jaw 162, the distance is reduced the mutual distance between the abutment part 190 and the right jaw 162. When the actuating lever 166 is pressed down, the distance between the abutment part 190 and the right jaw 162 is then increased again.
  • the abutment part 190 is positioned firmly but adjustable on the guide shafts 156, 158. With the abutment part 190 in a fixed position, the right jaw 162 moves back and forth when the actuating lever 166 is moved up and down. As a result, the mutual distance between the two jaws 160, 162 can be reduced or increased again.
  • a compression spring 169 can be installed between the two jaws 160, 162, as is indicated in the drawing.
  • the compression spring 169 can also be dispensed with and, if necessary, the right jaw can be ball-supported on the two guide shafts 156, 158.
  • the right abutment part 190 is fastened to the right block 154 via an adjusting spindle 194.
  • the adjusting spindle 194 can be rotated about its axis 198 by means of an adjusting wheel 196 and the distance of the abutment part 190 from the right block 154 can thereby be set to different sizes.
  • the adjusting wheel 196 has several, in the present example, ten identical formations 200 distributed over the circumference. In each of these formations 200, a corresponding counter-form 202 engages, which is formed on a locking lever 204.
  • the locking lever 204 is pivotally mounted about a guide shaft 156. Depending on its locking position, the respective rotational position of the adjusting wheel 196 is fixed. As a result, the abutment part 190 is fixedly mounted on the guide shafts 156, 158 in accordance with the rotational position of the adjusting wheel 196.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • Vascular Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Cardiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

L'invention concerne un dispositif pour déformer une pièce tubulaire de type réticulaire déformable dans le sens radial, à l'aide d'un outil de type pince. Ce dispositif comprend un corps de façonnage (12) pouvant être positionné entre des mâchoires de serrage (92, 94) de l'outil (10). Le corps de façonnage (12) se présente de manière sensiblement tubulaire et comporte une ouverture de passage (16) axiale de diamètre circulaire constant. Les parois de ce corps de façonnage (12) qui entourent cette ouverture de passage (16) dans le sens radial se présentent sous forme de méandres dans le sens périphérique, de manière à permettre une déformation radiale des parois et par conséquent une diminution radiale de l'ouverture de passage (16), tout en maintenant un diamètre circulaire réduit.
PCT/DE1998/002281 1997-08-20 1998-08-08 Dispositif pour deformer une piece tubulaire de type reticulaire deformable dans le sens radial Ceased WO1999008623A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19881132T DE19881132B4 (de) 1997-08-20 1998-08-08 Vorrichtung zum Verformen eines gitterrostähnlichen, radial Verformbaren Rohrstückes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29714857.5 1997-08-20
DE29714857U DE29714857U1 (de) 1997-08-20 1997-08-20 Vorrichtung zum Verformen eines gitterrostähnlichen, radial verformbaren Rohrstückes

Publications (1)

Publication Number Publication Date
WO1999008623A1 true WO1999008623A1 (fr) 1999-02-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/002281 Ceased WO1999008623A1 (fr) 1997-08-20 1998-08-08 Dispositif pour deformer une piece tubulaire de type reticulaire deformable dans le sens radial

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DE (2) DE29714857U1 (fr)
WO (1) WO1999008623A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005099967A1 (fr) * 2004-04-16 2005-10-27 Qualimed Innovative Medizinprodukte Gmbh Dispositif de reduction du diametre d'un stent
WO2016160012A1 (fr) 2015-04-01 2016-10-06 Yale University Particules de platine et de fer pour l'adhérence d'agents biologiques sur des implants médicaux

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6051002A (en) * 1998-10-09 2000-04-18 Advanced Cardiovascular Systems, Inc. Stent crimping device and method of use
US6481262B2 (en) 1999-12-30 2002-11-19 Advanced Cardiovascular Systems, Inc. Stent crimping tool
US6510722B1 (en) 2000-05-10 2003-01-28 Advanced Cardiovascular Systems, Inc. Stent crimping tool for producing a grooved crimp
US6568235B1 (en) 2000-08-10 2003-05-27 Advanced Cardiovascular Systems, Inc. Assembly for crimping an intraluminal device or measuring the radial strength of the intraluminal device and method of use
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US5626604A (en) * 1995-12-05 1997-05-06 Cordis Corporation Hand held stent crimping device

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WO2005099967A1 (fr) * 2004-04-16 2005-10-27 Qualimed Innovative Medizinprodukte Gmbh Dispositif de reduction du diametre d'un stent
WO2016160012A1 (fr) 2015-04-01 2016-10-06 Yale University Particules de platine et de fer pour l'adhérence d'agents biologiques sur des implants médicaux
US11285211B2 (en) 2015-04-01 2022-03-29 Yale University Iron platinum particles for adherence of biologics on medical implants

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DE29714857U1 (de) 1997-10-09
DE19881132D2 (de) 2000-08-24
DE19881132B4 (de) 2006-05-24

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