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WO1996010955A1 - Pinces - Google Patents

Pinces Download PDF

Info

Publication number
WO1996010955A1
WO1996010955A1 PCT/GB1995/002367 GB9502367W WO9610955A1 WO 1996010955 A1 WO1996010955 A1 WO 1996010955A1 GB 9502367 W GB9502367 W GB 9502367W WO 9610955 A1 WO9610955 A1 WO 9610955A1
Authority
WO
WIPO (PCT)
Prior art keywords
pin
flange
clip
arms
arm
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/GB1995/002367
Other languages
English (en)
Inventor
William John Hoskin
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.)
Microsurgical Equipment Ltd
Original Assignee
Microsurgical Equipment Ltd
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 Microsurgical Equipment Ltd filed Critical Microsurgical Equipment Ltd
Publication of WO1996010955A1 publication Critical patent/WO1996010955A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/12—Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
    • A61B17/122—Clamps or clips, e.g. for the umbilical cord
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/1658—Elements for flattening or folding the mouth portion
    • B65D33/1675—Hinged clips

Definitions

  • the present invention relates to clips.
  • Ligature clips have been used to clamp blood and other vessels.
  • Such clips can be either of the temporary variety, allowing their removal after surgical procedures or the permanent variety where they are left in place after the operation.
  • a clip comprising a pair of rigid arms linked end to end by a flexible strip forming a hinge, and the opposite end portions of the arms supporting a locking mechanism in the form of an opening in one arm having an inwardly projecting flange and a cooperating pin projecting from the other arm, the interaction between the pin and flange being such that movement of the pin into opening encounters substantially less resistance than movement of the pin out of the opening.
  • Figure 1 is a side elevation of the clip with the clip open and receiving a blood vessel
  • Figure 2 is a front elevation of the clip of Figure 1;
  • Figure 3 is a side elevation of the clip of Figure 1 closed and clamping a blood vessel;
  • Figure 4 is a front elevation of the clip of Figure 3.
  • Figure 5 is a fragmentary plan view to an enlarged scale of the end portion of the lower arm of the clip.
  • the clip to be described is arranged to permanently clamp a blood vessel 11.
  • the clip shown in Figure 1 comprises two arms 2 and 4 each of generally rectangular cross section interconnected at one end by a thin strip 6 of the same material.
  • the arms and strip may be produced by stamping a rectangular blank of titanium. This will be described in more detail hereinafter.
  • the upper arm 2 carries on an internal face, adjacent its free end, a locking pin 8.
  • the lower arm 4 has a free end portion 10 of reduced thickness, and has a central aperture 12 (see Figure 5) . Projecting inwardly of the aperture 12 is an interrupted annular flange 14.
  • the pin 8 is arranged to engage the aperture 12 when the two arms 8 and 10 are made to close on one another.
  • the internal diameter of the flange 14 is substantially smaller than the external diameter of the pin 8 so that when the pin 8 engages the flange 14 the interrupted portions of the flange are deflected away from the pin 8 (see Figure 4) . Any attempt to withdraw the pin 8 from the aperture 12 subjects the interrupted portions to compression and so it becomes difficult if not impossible to withdraw the pin.
  • the ratio of the internal diameter of the flange (when undistorted) to the external diameter of the pin lies in the range of from 3:6 to 5:6 but is preferably 4:6.
  • the hinge 6 constrains the movement of the two arms towards one another so that the pin 8 will always be aligned with the aperture 12 at the instant of engagement to ensure engagement with the aperture upon closure.
  • the longitudinal axis of the pin 8 is curved so that it is coincident with a circle centred on the pivotal axis formed by the strip 6 and having a radius equal to the distance of the pin 8 from the strip 6.
  • the length of the strip 6 is such as to ensure a minimum spacing between the two arms 2 and 4 adjacent the strip.
  • the spacing is preferably equal to the thickness of the blood vessel when clamped to a degree sufficient to inhibit the passage of fluid through the vessel but not so great as to damage the vessel.
  • the ratio of the length of the strip 6 to the length of the arm 4 is in the range of from 1:4 to 1:6 but is preferably in the ratio of 1:5.
  • the facing surfaces of the two arms 2 and 4 should be parallel.
  • the cooperating surfaces of the arms 2 and 4 are planar.
  • a flange 2A and 2B projecting from each lateral side of the arm.
  • Each flange is profiled to form a row of sharp teeth projecting away from the lateral side of the arm 2.
  • Extending flush with the inner face of the arm 4 is a flange 4A and 4B projecting from each lateral side of the arm.
  • Each flange is profiled to form a row of sharp teeth projecting away from the lateral side of the arm 4.
  • the teeth act to prevent the clip from sliding along the blood vessel 11. As shown in Figure 4 when the blood vessel 11 is clamped by the clip the sections of the blood vessel on opposite sides of the clip diverge either because of pressure in that section of the vessel or because of the natural resilience of the vessel. Any displacement of the clip relative to the vessel will cause the teeth to engage or penetrate the adjoining blood vessel wall and this will then inhibit further displacement of the vessel.
  • the clip can be fabricated of plastics but the preferred material is titanium or a titanium alloy. Because titanium is relatively malleable the clip can be readily manufactured by the following method.
  • a blank is cut from a sheet of titanium.
  • the blank is then stamped to produce the profile of the two arms and the thinned area of the strip 6.
  • the profile of the stamping machine is such that the two halves of the stamping die allow excess metal to escape in the area of the aperture 12 and from opposite sides of the arms as flashing.
  • This flashing is then subjected to a further stamping operation to form the interrupted flange 14 and the toothed flanges 2A, 2B, 4A and 4B.
  • the pin 8 is secured to the arm 2 either by force fitting it into an opening (not shown) provided, or by diffusion bonding. Instead, the pin may be partly cut out of the material of the blank and then bent into the required altitude. The arm and the pin are then clamped in a jig and the pin 8 bent to the correct curvature.
  • toothed flanges 2A, 2B, 4A & 4B are curved slightly inwardly to ensure a more positive engagement with the blood vessel 11 when the clip starts to be displaced with respect to the vessel.
  • the arms 2 and 4 are relatively thick so that any risk of them being bent or bending in use is inhibited.
  • the clip can be closed on the vessel by hand or by a pair of surgical pliers.
  • the locking mechanism in the form of an interrupted flange and a smooth pin it can take the form of a plain flange and a barbed pin.
  • Other permanent locking mechanisms can be used.
  • the clip can be used in applications other than in surgery for example for clamping engineering hose pipes.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Reproductive Health (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Surgical Instruments (AREA)

Abstract

Pinces de ligature destinée à clamper des vaisseaux sanguins (11), qui possède deux bras (2, 4) reliés par une bande souple (6) formant charnière. L'extrémité libre de l'un des bras (2) porte une tige (8) et l'extrémité libre de l'autre bras (4) possède une ouverture (12) dotée d'une collerette (14) discontinue dirigée vers l'intérieur. Le diamètre interne de la collerette (14) est inférieur au diamètre externe de la tige (8), si bien que lorsque la tige (8) est introduite dans la collerette (14), ladite collerette est soumise à une flexion. La libération de la tige (8) est contrée par des forces de compression, ce qui entraîne donc un blocage permanent efficace des deux bras l'un par rapport à l'autre. Sur les côtés opposés des bras (2, 4) s'étendent des rebords dentelés (2A, 2B, 4A et 4B) qui mordent dans la surface adjacente du vaisseau sanguin si ladite pince est soumise à une force dirigée dans le sens longitudinal du vaisseau sanguin (11), ce qui empêche le coulissement de la pince le long dudit vaisseau.
PCT/GB1995/002367 1994-10-08 1995-10-05 Pinces Ceased WO1996010955A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9420308.0 1994-10-08
GB9420308A GB2293768A (en) 1994-10-08 1994-10-08 Ligature clip

Publications (1)

Publication Number Publication Date
WO1996010955A1 true WO1996010955A1 (fr) 1996-04-18

Family

ID=10762544

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1995/002367 Ceased WO1996010955A1 (fr) 1994-10-08 1995-10-05 Pinces

Country Status (2)

Country Link
GB (1) GB2293768A (fr)
WO (1) WO1996010955A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109199515A (zh) * 2017-07-05 2019-01-15 江苏风和医疗器材股份有限公司 一种血管夹

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA3059549C (fr) * 2012-08-09 2021-10-26 Advanced Bariatric Technology, Llc Clamp bariatrique surmoule polymere et procede d'installation

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867944A (en) * 1972-10-27 1975-02-25 Wood Ernest C Hemostatic clip and applicator therefor
GB2025511A (en) * 1978-07-17 1980-01-23 Hollister Inc Clamp
WO1980001752A1 (fr) * 1979-02-28 1980-09-04 H Leveen Agrafe de ligature des vaisseaux sanguins
US4385431A (en) * 1977-05-03 1983-05-31 Eaton Corporation Method of securing a stud to an apertured panel
EP0130037A1 (fr) * 1983-06-20 1985-01-02 Ethicon, Inc. Agrafe chirurgicale en forme de maille
EP0184542A2 (fr) * 1984-12-03 1986-06-11 FOGARTY, Thomas J. Instrument pour effectuer la ligature de vaisseaux sanguins
EP0609612A2 (fr) * 1992-11-10 1994-08-10 Ethicon Inc. Agrafe de ligature

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4498476A (en) * 1981-08-27 1985-02-12 Ethicon, Inc. Non-metallic, bio-compatible hemostatic clips with interlocking latch means
US4487205A (en) * 1982-04-26 1984-12-11 Ethicon, Inc. Non-metallic, bio-compatible hemostatic clips

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867944A (en) * 1972-10-27 1975-02-25 Wood Ernest C Hemostatic clip and applicator therefor
US4385431A (en) * 1977-05-03 1983-05-31 Eaton Corporation Method of securing a stud to an apertured panel
GB2025511A (en) * 1978-07-17 1980-01-23 Hollister Inc Clamp
WO1980001752A1 (fr) * 1979-02-28 1980-09-04 H Leveen Agrafe de ligature des vaisseaux sanguins
EP0130037A1 (fr) * 1983-06-20 1985-01-02 Ethicon, Inc. Agrafe chirurgicale en forme de maille
EP0184542A2 (fr) * 1984-12-03 1986-06-11 FOGARTY, Thomas J. Instrument pour effectuer la ligature de vaisseaux sanguins
EP0609612A2 (fr) * 1992-11-10 1994-08-10 Ethicon Inc. Agrafe de ligature

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109199515A (zh) * 2017-07-05 2019-01-15 江苏风和医疗器材股份有限公司 一种血管夹

Also Published As

Publication number Publication date
GB9420308D0 (en) 1994-11-23
GB2293768A (en) 1996-04-10

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