US20210212708A1 - Extractor cannula securement and processing - Google Patents
Extractor cannula securement and processing Download PDFInfo
- Publication number
- US20210212708A1 US20210212708A1 US17/144,459 US202117144459A US2021212708A1 US 20210212708 A1 US20210212708 A1 US 20210212708A1 US 202117144459 A US202117144459 A US 202117144459A US 2021212708 A1 US2021212708 A1 US 2021212708A1
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- United States
- Prior art keywords
- wire
- elongated member
- loop
- wires
- distal end
- 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.)
- Abandoned
Links
- 238000012545 processing Methods 0.000 title abstract description 10
- 238000002788 crimping Methods 0.000 claims abstract description 28
- 239000003292 glue Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 229910000679 solder Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 239000004575 stone Substances 0.000 abstract description 8
- 210000000056 organ Anatomy 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 229910001000 nickel titanium Inorganic materials 0.000 description 2
- 230000002485 urinary effect Effects 0.000 description 2
- 229920001651 Cyanoacrylate Polymers 0.000 description 1
- MWCLLHOVUTZFKS-UHFFFAOYSA-N Methyl cyanoacrylate Chemical compound COC(=O)C(=C)C#N MWCLLHOVUTZFKS-UHFFFAOYSA-N 0.000 description 1
- 229920002614 Polyether block amide Polymers 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 210000003445 biliary tract Anatomy 0.000 description 1
- 201000001352 cholecystitis Diseases 0.000 description 1
- 201000001883 cholelithiasis Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 208000001130 gallstones Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
- A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
Definitions
- Urological baskets, and other baskets often utilize a glue joint to secure the basket formation into the desired orientation. It is desired to use other methods to construct a stone management basket such as for the benefits of limiting the cost, both in labor and in material, to manufacture a stone management basket as well as for repeatability and other quality control factors.
- Embodiments of the present disclosure relate to, among other things, securement and processing of medical retrieval devices.
- Each of the embodiments disclosed herein may include one or more of the features described in connection with any of the other disclosed embodiments.
- One general aspect of the present disclosure includes a medical retrieval device for retrieving stones, calculi, and the like, as well as polyps, foreign objects, and/or anatomical abnormalities from various organs and passages, comprising an elongated member, and a first wire and a second wire that forms a retrieval basket.
- the elongated member has a hollow passageway longitudinally positioned therebetween, and the first wire having first and second ends attached to the distal end of the elongated member and forming a first loop extending longitudinally and distally from said distal end of the elongated member.
- the second wire likewise has its first and second ends attached to the distal end of the elongated member, forming a second loop extending longitudinally and distally from the distal end of the elongated member.
- the second loop is interconnected distally to said first loop, which interconnection may include one or more of conjoined loops, cannula, weld, solder, or other connection means known in the art for the distal end of wire baskets.
- the elongated member and the first and second wires are secured by a crimp joint and a second joint, where such joints can be secured by a cannula, welding, and/or soldering in addition to and/or instead of crimping.
- Another general aspect of the present disclosure includes processing of the device disclosed above, processing comprising steps of placing all ends of the first wire and the second wire into an elongated member through a distal end of the elongated member, moving said elongated member to a position where the first loop and the second loop start their curvatures, placing said first and second wires and said elongated member through an alignment fixture such as a crimping or other securement fixture having thru cuts configured for the interlocked wires, aligning said elongated member in a desired position, and crimping said first and second wires and said elongated member, where such joints can be secured by a cannula, welding (including laser welding), glue, and/or soldering in addition to and/or instead of crimping.
- processing comprising steps of placing all ends of the first wire and the second wire into an elongated member through a distal end of the elongated member, moving said elongated member to a position where the first loop and the second loop start their cur
- FIG. 1 is an illustration showing a distal portion of a retrieval device in accordance with certain non-limiting aspects of the present disclosure, where alternative basket and/or snare configurations may be used with the retrieval device.
- FIG. 2 is an illustration showing an elongated member in accordance with certain aspects of the present disclosure.
- FIG. 3 is an illustration showing a retrieval basket in accordance with certain aspects of the present disclosure.
- FIGS. 4A-4D are illustrations showing various non-limiting crimp or other alignment fixture designs for processing of the device, where other securement means such as a cannula, welding (including laser welding), glue, and/or soldering in addition to and/or instead of crimping may be used.
- other securement means such as a cannula, welding (including laser welding), glue, and/or soldering in addition to and/or instead of crimping may be used.
- FIG. 5 is an illustration showing how wires of the device may interact with, for example, a crimping fixture in accordance with certain aspects of the present disclosure.
- FIG. 6 is an illustration showing assembly of the device in accordance with certain aspects of the present disclosure.
- FIGS. 7A-7F are illustrations showing various cross sectional configurations, taken along line X-X of FIG. 6 , near a crimp joint as described within the scope of the present disclosure.
- proximal and distal are used herein to refer to the relative positions of the components of an exemplary medical device.
- proximal refers to a position relatively closer to the exterior of the body or closer to a medical professional using the medical device.
- distal refers to a position relatively further away from the medical professional using the medical device, or closer to the interior of the body.
- a retrieval device 10 may comprise an elongated member 20 (such as, for example, a cannula), a retrieval basket 30 , a crimp joint 50 and an additional/second joint 40 .
- the elongated member 20 may generally comprise a proximal end 22 , a distal end 28 , and a hollow passageway 25 longitudinally positioned therebetween.
- the elongated member 20 may be made of a metal such as stainless steel. Other flexible or rigid materials may also be utilized.
- the retrieval basket 30 may comprise a plurality of wires 34 , 38 attached to the distal end 28 of the elongated member 20 .
- the basket may include multiple loops of wires that interact with each other in order to be used in a stone management clinical setting, or for other retrieval uses when deployed a patient.
- the term “loop” should be understood to encompass a variety of shapes and not merely a circular or elliptical configuration, but also—by way of non-limiting example, helical, diamond-shaped, and/or other wire-shapes capable of defining a central volume to capture and/or carry a stone or other material.
- the basket can be preformed into any desired shape or size for capturing and removing calculi from the biliary or urinary system. Dimensions should be on scale with the size of the retrieval device. For example, the diameter of the device 10 may range from 1.5 Fr to 4.5 Fr.
- the wires 34 , 38 may be made from a nickel titanium alloy such as nitinol. As illustrated by FIG. 3 , in one embodiment, the basket 30 may comprise two wires 34 , 38 , each forming loops extending longitudinally and distally from the distal end of the elongated member 28 . In some embodiments, the wires 34 , 38 may be interconnected perpendicularly relative to each other at the distal end and/or along planes defined by the respective loop formed by each wire 34 , 38 . In one embodiment, the large loop of wire 38 includes a distal-end small loop 39 that interconnects/links in a chain-like manner with a distal-end small loop 35 of the wire 34 . Alternative embodiments may include different wire geometries (e.g. pie wire, round, square, D-shaped, etc.), wire quantities, and/or cannula geometries.
- wire geometries e.g. pie wire, round, square, D-shaped, etc.
- the second joint 40 may be an adhesive such as glue.
- the adhesive may temporarily or permanently secure the wires 34 , 38 .
- low viscosity cyanoacrylate glue such as Loctite 4061
- Alternative embodiments may include different glue compositions, and glue properties and application parameters should be selected to ensure appropriate adhesive dispersion.
- glue such as glue
- a notchless cannula design may be advantageous to provide additional surface area for gluing and crimping.
- the second joint 40 may be a heat shrink.
- a heat shrink which may be activated using a heat gun, would have a melting temperature lower than the temperature at which the wires 34 , 38 are formed (roughly 400° C.) so that the wires 34 , 38 are not adversely affected during the heat shrink process.
- Exemplary heat shrink materials may include PTFE and PEBAX.
- One advantage of this embodiment is that the wires 34 , 38 are kept in a desired formation throughout the functioning life of the retrieval device 10 .
- Another advantage of this embodiment is that it may replace the need to use a metal cannula and give the retrieval device 10 a higher degree of flexibility when used inside a scope for a procedure.
- processing of the retrieval device may generally include placing all four ends of the wires 34 , 38 into the elongated member 20 through its hollow passageway 25 , moving the elongated member 20 to the bottom of the wires 33 , 37 where the wires 34 , 38 end their curvature and go straight. Then, the wires 34 , 38 and the elongated member 20 may be placed through an alignment fixture or other securement fixture such as crimping fixture 100 having thru cuts configured for the interlocked wires 34 , 38 to ensure that the wires 34 , 38 are aligned properly. Once the wires 34 , 38 and the elongated member 20 are properly aligned, they may be crimped to form a crimp joint 50 . A second joint 40 may be formed prior to forming the crimp joint 50 .
- formation of a crimp joint 50 may utilize a crimping fixture or other alignment fixture 100 to ensure that the wires 34 , 38 hold their desired relationship during the crimping process.
- crimping fixture or other alignment fixture 100 a , 100 b , 200 has a cross-hair thru cut 150 , 250 all the way through the part to allow a distal or proximal end of the basket 30 to be fed through it before and/or after crimping.
- crimping fixture 100 a , 100 b , 200 may have a blind cut (not shown in figures) instead of thru cut 150 , 200 . Referring to FIGS.
- crimping fixture 100 a , 100 b , 200 may have a thru cut 150 , 250 that slides in the wires 34 , 38 interconnected perpendicularly.
- configurations illustrated in FIGS. 4A-4B have an indented area 110 a , 110 b in the middle to help the basket wires 34 , 38 slide into the fixture.
- FIG. 5 illustrates how wires 34 , 38 may interact with crimping fixture 100 a .
- Indented area 110 a may help wires 34 , 38 to slide all the way into the fixture 100 a through the thru cut 150 .
- Other crimping fixtures as illustrated by FIG. 4B-4B may interact with wires 34 , 38 in a similar manner. More specifically, the fixture of FIG.
- crimping fixture 200 may comprise a base section 210 and an elongated section 230 to help get the fixture 200 closer to the crimping site.
- the diameter of the base section 210 may be greater than the diameter of the elongated section 230 .
- the diameter of the base section 210 may be 0.750 inches while the diameter of the elongated section 250 may be 0.375 inches.
- the thickness of base section 210 may be 0.157 inches.
- the thickness of the elongated section 250 may range from 0.079 inches to 0.154 inches.
- the crimping fixture 200 may also have the thru cut 250 . As with alternative embodiment described above, the thru cut 250 should have a tight tolerance to keep the wires 34 , 38 in line. Specific dimensions should be on scale with the size of the retrieval device 10 , thus may vary.
- processing of a device with a glue 40 a or other secondary securement means (such as, by way of non-limiting example, weld or solder) 40 a as part of a second joint 40 may include steps of aligning the wires 34 , 38 inside an elongated member 20 to ensure that the wires 34 , 38 are shaped correctly to form a basket of a desired configuration. Aligning may include pulling the wires 34 , 38 into an alignment sheath (not shown) to assure a proper alignment and then removing the alignment sheath while maintaining the alignment. After removing the alignment sheath, the glue may be applied to the distal end 28 of the elongated member 20 or elsewhere within the elongated member 20 .
- a sheath 46 may be pulled over the elongated member 20 before or after the act of crimping.
- the proximal half of the elongated member 20 where no glue 40 a presents, may be crimped with the wires 34 , 38 .
- this crimp 50 and/or additional crimp joints 50 may be placed as needed or desired, proximal and/or distal of the glue or other secondary securement means in embodiments were such secondary securement means are present.
- Processing an embodiment using a heat shrink as an elongated body 20 may comprise steps of placing all ends of the wires 34 , 38 in a heat shrink, moving the heat shrink ( 20 ) to the wires' bottom portions 33 , 37 where the wires 34 , 38 end their curvature and go straight or substantially straight as compared to the loop portions. Further, processing may include turning a heat gun to a desired temperature, placing all ends of the wires 34 , 38 and the heat shrink at a desired distance from the heat gun for a designated time. Once the heat shrink and the wires 34 , 38 cool down and an inspection confirms a proper alignment, which may be perpendicular, one may proceed to further process the device 10 .
- a short crimper that can crimp down to 0.010′′ at a force greater than 100 lbs. may be used to form a crimp joint 50 . It is important to ensure that the pressure setting for the crimping fixture is set to the correct final outside diameter and that the pressure is high enough.
- the area of crimp joint 50 after crimping with a short crimper may have a hexagonally shaped cross-section, or another geometric shape (e.g., octagonal, circular, elliptical, or other shape, depending upon the shape of the crimping mechanism/surface contacting the crimp joint 50 during formation thereof, with reference to non-limiting examples in FIGS.
- the region near and/or including the crimp joint 50 may have different cross-sectional configurations (as viewed along line X-X of FIG. 6 ) after the wires are aligned and secured together.
- Certain embodiments, such as FIGS. 7A, 7D, 7E, and 7F may advantageously include a pie-shaped wire, also called “delta wire”, because the added angles may help keep the wires 34 , 38 in the perpendicular relationship.
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Abstract
Description
- This application claims priority to U.S. Provisional Application Ser. No. 62/960,348, filed Jan. 13, 2020, which is incorporated herein by reference in its entirety.
- Various organs and passages in the body are subject to the development of stones, calculi, and the like. For example, gallstones are a common problem in the United States and the most frequent cause of gallbladder inflammation. Calculi in other parts of the biliary system and/or the urinary system are also common places. Medical retrieval devices for capturing and extracting stones from various organs and passages are well known. Such devices typically comprise a retrieval basket attached to a distal end of an elongated member.
- Urological baskets, and other baskets, often utilize a glue joint to secure the basket formation into the desired orientation. It is desired to use other methods to construct a stone management basket such as for the benefits of limiting the cost, both in labor and in material, to manufacture a stone management basket as well as for repeatability and other quality control factors.
- Embodiments of the present disclosure relate to, among other things, securement and processing of medical retrieval devices. Each of the embodiments disclosed herein may include one or more of the features described in connection with any of the other disclosed embodiments.
- One general aspect of the present disclosure includes a medical retrieval device for retrieving stones, calculi, and the like, as well as polyps, foreign objects, and/or anatomical abnormalities from various organs and passages, comprising an elongated member, and a first wire and a second wire that forms a retrieval basket. The elongated member has a hollow passageway longitudinally positioned therebetween, and the first wire having first and second ends attached to the distal end of the elongated member and forming a first loop extending longitudinally and distally from said distal end of the elongated member. The second wire likewise has its first and second ends attached to the distal end of the elongated member, forming a second loop extending longitudinally and distally from the distal end of the elongated member. The second loop is interconnected distally to said first loop, which interconnection may include one or more of conjoined loops, cannula, weld, solder, or other connection means known in the art for the distal end of wire baskets. The elongated member and the first and second wires are secured by a crimp joint and a second joint, where such joints can be secured by a cannula, welding, and/or soldering in addition to and/or instead of crimping.
- Another general aspect of the present disclosure includes processing of the device disclosed above, processing comprising steps of placing all ends of the first wire and the second wire into an elongated member through a distal end of the elongated member, moving said elongated member to a position where the first loop and the second loop start their curvatures, placing said first and second wires and said elongated member through an alignment fixture such as a crimping or other securement fixture having thru cuts configured for the interlocked wires, aligning said elongated member in a desired position, and crimping said first and second wires and said elongated member, where such joints can be secured by a cannula, welding (including laser welding), glue, and/or soldering in addition to and/or instead of crimping.
- Other systems, methods, features and advantages of the invention will be, or will become, apparent to one with skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features, and advantages be within the scope of the invention, and be encompassed by the following claims.
- The present disclosure can be better understood with reference to the following drawings and description. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the present disclosure. Moreover, in the figures, like-referenced numerals designate corresponding parts throughout the different views.
-
FIG. 1 is an illustration showing a distal portion of a retrieval device in accordance with certain non-limiting aspects of the present disclosure, where alternative basket and/or snare configurations may be used with the retrieval device. -
FIG. 2 is an illustration showing an elongated member in accordance with certain aspects of the present disclosure. -
FIG. 3 is an illustration showing a retrieval basket in accordance with certain aspects of the present disclosure. -
FIGS. 4A-4D are illustrations showing various non-limiting crimp or other alignment fixture designs for processing of the device, where other securement means such as a cannula, welding (including laser welding), glue, and/or soldering in addition to and/or instead of crimping may be used. -
FIG. 5 is an illustration showing how wires of the device may interact with, for example, a crimping fixture in accordance with certain aspects of the present disclosure. -
FIG. 6 is an illustration showing assembly of the device in accordance with certain aspects of the present disclosure. -
FIGS. 7A-7F are illustrations showing various cross sectional configurations, taken along line X-X ofFIG. 6 , near a crimp joint as described within the scope of the present disclosure. - Various aspects are described below with reference to the drawings in which like elements generally are identified by like numerals. The relationship and functioning of the various elements of the aspects may better be understood by reference to the following detailed description. However, aspects are not limited to those illustrated in the drawings or explicitly described below. It also should be understood that the drawings are not necessarily to scale, and in certain instances details may have been omitted that are not necessary for an understanding of aspects disclosed herein, such as conventional material, construction, and assembly.
- The terms “proximal” and “distal” are used herein to refer to the relative positions of the components of an exemplary medical device. When used herein, “proximal” refers to a position relatively closer to the exterior of the body or closer to a medical professional using the medical device. In contrast, “distal” refers to a position relatively further away from the medical professional using the medical device, or closer to the interior of the body.
- Referring to
FIG. 1 , a retrieval device 10 may comprise an elongated member 20 (such as, for example, a cannula), aretrieval basket 30, acrimp joint 50 and an additional/second joint 40. As illustrated byFIG. 2 , theelongated member 20 may generally comprise aproximal end 22, adistal end 28, and ahollow passageway 25 longitudinally positioned therebetween. Theelongated member 20 may be made of a metal such as stainless steel. Other flexible or rigid materials may also be utilized. Theretrieval basket 30 may comprise a plurality ofwires distal end 28 of theelongated member 20. The basket may include multiple loops of wires that interact with each other in order to be used in a stone management clinical setting, or for other retrieval uses when deployed a patient. The term “loop” should be understood to encompass a variety of shapes and not merely a circular or elliptical configuration, but also—by way of non-limiting example, helical, diamond-shaped, and/or other wire-shapes capable of defining a central volume to capture and/or carry a stone or other material. The basket can be preformed into any desired shape or size for capturing and removing calculi from the biliary or urinary system. Dimensions should be on scale with the size of the retrieval device. For example, the diameter of the device 10 may range from 1.5 Fr to 4.5 Fr. Thewires FIG. 3 , in one embodiment, thebasket 30 may comprise twowires elongated member 28. In some embodiments, thewires wire wire 38 includes a distal-endsmall loop 39 that interconnects/links in a chain-like manner with a distal-endsmall loop 35 of thewire 34. Alternative embodiments may include different wire geometries (e.g. pie wire, round, square, D-shaped, etc.), wire quantities, and/or cannula geometries. - In one embodiment, the
second joint 40 may be an adhesive such as glue. The adhesive may temporarily or permanently secure thewires - In another embodiment, the
second joint 40 may be a heat shrink. Ideally, a heat shrink, which may be activated using a heat gun, would have a melting temperature lower than the temperature at which thewires wires wires - In one embodiment, processing of the retrieval device may generally include placing all four ends of the
wires elongated member 20 through itshollow passageway 25, moving theelongated member 20 to the bottom of thewires wires wires elongated member 20 may be placed through an alignment fixture or other securement fixture such as crimpingfixture 100 having thru cuts configured for the interlockedwires wires wires elongated member 20 are properly aligned, they may be crimped to form a crimp joint 50. A second joint 40 may be formed prior to forming the crimp joint 50. - In one embodiment, formation of a crimp joint 50 may utilize a crimping fixture or
other alignment fixture 100 to ensure that thewires other alignment fixture cut basket 30 to be fed through it before and/or after crimping. Alternatively, crimpingfixture cut FIGS. 4A-4D , crimpingfixture cut wires FIGS. 4A-4B have anindented area basket wires FIG. 5 illustrates howwires fixture 100 a.Indented area 110 a may helpwires fixture 100 a through the thrucut 150. Other crimping fixtures as illustrated byFIG. 4B-4B may interact withwires FIG. 4A hasopenings 120 on the side to allow assembly with screws (screws not shown in figures). The fixture ofFIG. 4B , the fixture does not haveopenings 120 on the side for screw assembly, but instead has smaller area outside of theindented area 110 b. The thrucut 150 should have a tight tolerance to keep thewires cuts 150 may be 0.590 inches and 0.020 inches, respectively. As illustrated byFIGS. 4C and 4D , in another embodiment, crimpingfixture 200 may comprise abase section 210 and anelongated section 230 to help get thefixture 200 closer to the crimping site. Specifically, the diameter of thebase section 210 may be greater than the diameter of theelongated section 230. For example, the diameter of thebase section 210 may be 0.750 inches while the diameter of theelongated section 250 may be 0.375 inches. Further, the thickness ofbase section 210 may be 0.157 inches. The thickness of theelongated section 250 may range from 0.079 inches to 0.154 inches. The crimpingfixture 200 may also have the thrucut 250. As with alternative embodiment described above, the thrucut 250 should have a tight tolerance to keep thewires - Referring to
FIG. 6 , processing of a device with aglue 40 a or other secondary securement means (such as, by way of non-limiting example, weld or solder) 40 a as part of a second joint 40 may include steps of aligning thewires elongated member 20 to ensure that thewires wires distal end 28 of theelongated member 20 or elsewhere within theelongated member 20. Once theglue 40 a cures, asheath 46 may be pulled over theelongated member 20 before or after the act of crimping. As shown in the drawings, the proximal half of theelongated member 20, where noglue 40 a presents, may be crimped with thewires crimp 50 and/or additional crimp joints 50 may be placed as needed or desired, proximal and/or distal of the glue or other secondary securement means in embodiments were such secondary securement means are present. - Processing an embodiment using a heat shrink as an
elongated body 20 may comprise steps of placing all ends of thewires bottom portions wires wires wires - In another embodiment, a short crimper that can crimp down to 0.010″ at a force greater than 100 lbs. may be used to form a crimp joint 50. It is important to ensure that the pressure setting for the crimping fixture is set to the correct final outside diameter and that the pressure is high enough. The area of crimp joint 50 after crimping with a short crimper may have a hexagonally shaped cross-section, or another geometric shape (e.g., octagonal, circular, elliptical, or other shape, depending upon the shape of the crimping mechanism/surface contacting the crimp joint 50 during formation thereof, with reference to non-limiting examples in
FIGS. 7A-7F , where “geometric” is defined as “utilizing rectilinear or simple curvilinear motifs or outlines that bear little resemblance to natural/organic forms”). In some embodiments, as illustrated byFIGS. 7A-7F , the region near and/or including the crimp joint 50 may have different cross-sectional configurations (as viewed along line X-X ofFIG. 6 ) after the wires are aligned and secured together. Certain embodiments, such asFIGS. 7A, 7D, 7E, and 7F , may advantageously include a pie-shaped wire, also called “delta wire”, because the added angles may help keep thewires - Although some preferred embodiments of the disclosure have been described, it should be understood that the disclosure is not so limited and modifications may be made without departing from the disclosure. The scope of the invention is defined by the appended claims, and all devices that come within the meaning of the claims, either literally or by equivalence, are intended to be embraced therein.
Claims (15)
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Application Number | Priority Date | Filing Date | Title |
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US17/144,459 US20210212708A1 (en) | 2020-01-13 | 2021-01-08 | Extractor cannula securement and processing |
US18/450,204 US20230404608A1 (en) | 2020-01-13 | 2023-08-15 | Extractor cannula securement and processing |
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Application Number | Priority Date | Filing Date | Title |
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US202062960348P | 2020-01-13 | 2020-01-13 | |
US17/144,459 US20210212708A1 (en) | 2020-01-13 | 2021-01-08 | Extractor cannula securement and processing |
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US18/450,204 Division US20230404608A1 (en) | 2020-01-13 | 2023-08-15 | Extractor cannula securement and processing |
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US20210212708A1 true US20210212708A1 (en) | 2021-07-15 |
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US18/450,204 Pending US20230404608A1 (en) | 2020-01-13 | 2023-08-15 | Extractor cannula securement and processing |
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US18/450,204 Pending US20230404608A1 (en) | 2020-01-13 | 2023-08-15 | Extractor cannula securement and processing |
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US (2) | US20210212708A1 (en) |
EP (1) | EP3847980B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD943743S1 (en) * | 2019-01-15 | 2022-02-15 | Olympus Corporation | Stone retrieval basket for medical device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5064428A (en) * | 1990-09-18 | 1991-11-12 | Cook Incorporated | Medical retrieval basket |
US8043303B2 (en) * | 2002-10-04 | 2011-10-25 | Cook Medical Technologies Llc | Handle for interchangeable medical device |
EP2288299B1 (en) * | 2008-04-01 | 2015-07-08 | Coloplast A/S | Wire basket unit having fixing disk element |
DE102012222356B4 (en) * | 2012-12-05 | 2017-03-16 | Epflex Feinwerktechnik Gmbh | Medical stone catcher instrument |
-
2021
- 2021-01-08 US US17/144,459 patent/US20210212708A1/en not_active Abandoned
- 2021-01-12 EP EP21151225.6A patent/EP3847980B1/en active Active
-
2023
- 2023-08-15 US US18/450,204 patent/US20230404608A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD943743S1 (en) * | 2019-01-15 | 2022-02-15 | Olympus Corporation | Stone retrieval basket for medical device |
Also Published As
Publication number | Publication date |
---|---|
EP3847980A1 (en) | 2021-07-14 |
US20230404608A1 (en) | 2023-12-21 |
EP3847980B1 (en) | 2024-07-24 |
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