WO2003092510A1 - Agrafeuse chirurgicale - Google Patents

Agrafeuse chirurgicale Download PDF

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Publication number
WO2003092510A1
WO2003092510A1 PCT/AU2003/000509 AU0300509W WO03092510A1 WO 2003092510 A1 WO2003092510 A1 WO 2003092510A1 AU 0300509 W AU0300509 W AU 0300509W WO 03092510 A1 WO03092510 A1 WO 03092510A1
Authority
WO
WIPO (PCT)
Prior art keywords
trigger
surgical stapler
slide
staples
rolling bearing
Prior art date
Application number
PCT/AU2003/000509
Other languages
English (en)
Inventor
William Richards Rayner
Original Assignee
Australian Surgical Devices Pty 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 Australian Surgical Devices Pty Ltd filed Critical Australian Surgical Devices Pty Ltd
Priority to AU2003227112A priority Critical patent/AU2003227112A1/en
Publication of WO2003092510A1 publication Critical patent/WO2003092510A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/068—Surgical staplers, e.g. containing multiple staples or clamps
    • A61B17/0682—Surgical staplers, e.g. containing multiple staples or clamps for applying U-shaped staples or clamps, e.g. without a forming anvil
    • A61B17/0684—Surgical staplers, e.g. containing multiple staples or clamps for applying U-shaped staples or clamps, e.g. without a forming anvil having a forming anvil staying above the tissue during stapling

Definitions

  • the present invention relates to a surgical stapler.
  • a surgical stapler comprising:
  • a body being adapted to house a plurality of skin staples
  • a trigger pivotally coupled to the body and including a rolling bearing being arranged to provide substantially rolling contact only with the body during actuation of the trigger which effects forming of one of the staples.
  • the surgical stapler also comprises a slide retractably fitted to the body and arranged relative to the rolling bearing and the staples to provide structural rigidity to the body. More preferably the slide is configured to at least partly restrain the rolling bearing and provide a bearing surface for the rolling contact of the rolling bearing. Generally the slide provides both a magazine for the plurality of staples and an anvil for forming of said one of the staples.
  • the surgical stapler further comprises a former mounted to the trigger and being arranged to form said one of the staples on actuation of the trigger.
  • the former is in the form of a leaf spring which serves to urge the trigger or the former itself out of forming contact with the staple.
  • the rolling contact of the rolling bearing with the slide provides a variable lever arm whereupon the former, during actuation of the trigger, exerts progressively less force on the staple for a given actuation force applied to the trigger.
  • the variable lever arm is provided by a progressive movement of the contact of the bearing surface with the slide away from the former with the staple during actuation of the trigger.
  • the trigger is elongate and the rolling bearing is at least in part defined by a pair of lateral protrusions in the trigger. More typically the pair of lateral protrusions are located in a respective recess in the body, said recesses being designed to inhibit longitudinal displacement of the trigger relative to the body.
  • the body and the trigger are constructed of a plastics or polymerics material. More preferably the slide is constructed of metal.
  • Figure 1 are perspective views partly cut away of a surgical stapler shown in an open and actuated position
  • Figure 2 are side, front and rear elevational views of the stapler of Figure 1 in the open and actuated positions;
  • Figure 3 illustrates detail A of the stapler of Figure 1 in the open and actuated positions.
  • a surgical stapler 10 comprising a trigger 12 pivotally coupled to a body 14.
  • the trigger and body 12 and 14 are elongate and include respective gripping or handle portions 16 and 18 at a proximal end and cooperative head portions 20 and 22 at a distal end, respectively.
  • the surgical stapler shown in the uppermost representation of Figures 1 and 2 is in its open position whereas the lowermost representation depicts the surgical stapler 10 in its actuated position.
  • the various components of the surgical stapler 10 in the actuated position have not been designated with numerals.
  • FIG 3 is an enlarged and detailed view of the respective distal head portions 20 and 22 of the surgical stapler 10 in both the open and actuated positions.
  • the surgical stapler 10 also comprises a slide 24 which in this example is constructed of stainless steel.
  • the slide 24 is designed to retractably fit over the distal head portion 22 of the body 14 and on its underlying surface is shaped in the form of a magazine being adapted for loading of a plurality of skin staples 26.
  • the trigger 16 is pivotally coupled to the body 14 via a bearing in the form of a rolling bearing 28.
  • the rolling bearing 28 of this embodiment is defined at least in part by one of a pair of lateral protrusions formed in the distal head portion 20 of the trigger 12.
  • the lateral protrusions of the rolling bearings such as 28 reside in respective recesses such as 30 formed in the distal head portion 22 of the body 14.
  • the recesses such as 30 are sized to inhibit longitudinal displacement of the trigger relative to the body 14.
  • the retractable slide 24 includes opposing side walls (one of which is cut away for illustrative purposes) together with a pair of inwardly directed flanges such as 32.
  • the flanges 32 enclose the respective rolling bearings 28 and provide a bearing surface for the rolling bearing such as 28. In operation the rolling bearing 28 maintains rolling contact with the flange 32 during actuation of the trigger 12.
  • the surgical stapler 10 further comprises a former 34 which in this example is mounted internally of the distal head portion 20 of the trigger 12.
  • the former 34 takes the configuration of a leaf spring and serves both to form one of the staples 26 whilst urging the trigger 12 or the former 34 itself out of forming contact with the staple 26.
  • the former 34 includes a pronged end which forms one of the staples 26 about an anvil 36 of the slide 24.
  • the staple is thus bent from a U-shaped configuration to a C-shaped form.
  • the trigger 12 effects reciprocation of the former 34 within an end wall 38 of the slide 24.
  • the rolling contact of the rolling bearing such as 28 with the flange 32 of the slide 24 provides a variable lever arm. That is, during actuation of the trigger 12, the former 34 exerts progressively less force on the staples such as 26 for a given actuation force applied to the trigger 12. This is best depicted by the rearward shift in the rolling contact point when the trigger 12 is moved from the open to the actuated positions in the upper and lower representation of all Figures.
  • the movement of the contact of the bearing surface with the slide 24 away from the former 34 with the staple such as 26 is progressively increased as the trigger 12 is actuated whereby maximum force is provided for the initial forming of the staple 26.
  • the forming force then applied to the staple 26 is "automatically" reduced with the same given force being applied to the trigger during the entire staple forming operation.
  • the surgical stapler 10 of this embodiment thus provides a relatively easy start and quicker finish to the stapling operation without an increase in the overall stroke of the trigger 12.
  • the former 34 is preloaded to approximately 70% of the compression force applied to the leaf spring portion of the former 34 on actuation on the trigger 12. That is, relatively little energy is expended in overcoming the compression force of the former 34 when actuating the trigger 12 and forming the staples.
  • the relative effectiveness of the rolling bearing 28 also allows a relatively low spring force from the former 34 in urging or biasing the trigger 12 or former 34 itself out of forming contact with the staple.
  • the surgical stapler 10 includes a compression spring or the like provided in the rear of the magazine to progressively urge the staples 26 to the anvil 36 in anticipation of forming.
  • the pusher and spring of this example are of a fairly conventional construction.
  • the slide 24 of this example provides structural rigidity to the highly loaded parts of the predominantly plastic stapler 10.
  • the surgical stapler 10 can accommodate up to around 80 staples and with seven parts only is simple in construction compared to a typical prior art surgical stapler which includes 12 or more parts.
  • the slide 24 of this example eliminates the use of adhesives or ultrasonic welding which are generally required in assembling prior art surgical staplers.
  • the rolling bearing 28 displays substantially no sliding during actuation of the trigger 12 although a small increment of sliding is due to the geometry, and thus does not require lubricant which may be necessary in prior art surgical staplers.
  • the rolling bearing may vary in its configuration from that described provided there is substantially rolling contact only during actuation of the trigger.
  • the materials of construction may also vary from that described provided they are suited to the requirements of the application.

Landscapes

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

Abstract

La présente invention concerne de manière générale une agrafeuse chirurgicale (10) comprenant un déclencheur (12) accouplé pivotant au corps (14). Le déclencheur (12) et le corps (14) sont allongés et comprennent des parties de prise (16) et de poignée (18) respectives situées à une extrémité proximale et des parties de tête (20, 22) qui coopèrent, situées à une extrémité distale, respectivement. Le déclencheur (16) est accouplé pivotant au corps (14) au moyen d'un palier se présentant sous la forme d'un palier à roulement (28). L'agrafeuse chirurgicale (10) comprend également un curseur qui s'ajuste de manière rétractable sur la partie de tête distale (22) du corps (14) et qui est conçu pour permettre le chargement d'une pluralité d'agrafes de peau (26). Le contact roulant du palier à roulement (28) avec le curseur (24) permet d'obtenir un bras de levier variable.
PCT/AU2003/000509 2002-05-02 2003-05-02 Agrafeuse chirurgicale WO2003092510A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003227112A AU2003227112A1 (en) 2002-05-02 2003-05-02 Surgical stapler

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPS2095A AUPS209502A0 (en) 2002-05-02 2002-05-02 Surgical stapler
AUPS2095 2002-05-02

Publications (1)

Publication Number Publication Date
WO2003092510A1 true WO2003092510A1 (fr) 2003-11-13

Family

ID=3835668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2003/000509 WO2003092510A1 (fr) 2002-05-02 2003-05-02 Agrafeuse chirurgicale

Country Status (2)

Country Link
AU (1) AUPS209502A0 (fr)
WO (1) WO2003092510A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113197606A (zh) * 2021-06-21 2021-08-03 苏州法兰克曼医疗器械有限公司 一种皮肤吻合器压钉结构
CN113288289A (zh) * 2021-07-05 2021-08-24 苏州法兰克曼医疗器械有限公司 一种可调节缝合钉折弯高度的吻合器

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112932584B (zh) * 2021-03-26 2022-04-01 苏州法兰克曼医疗器械有限公司 一种具有快速复位的吻合器
CN113116433B (zh) * 2021-04-19 2022-04-01 苏州法兰克曼医疗器械有限公司 一种一次成型外科手术缝合直线吻合器
CN113288266B (zh) * 2021-05-17 2022-04-01 苏州法兰克曼医疗器械有限公司 一种外科伤口缝合用吻合器
CN113384312B (zh) * 2021-07-23 2022-04-01 苏州贝诺医疗器械有限公司 一种可更换钉仓的皮肤吻合器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4179057A (en) * 1978-11-17 1979-12-18 Senco Products, Inc. Disposable surgical stapling instrument
US4895289A (en) * 1986-12-22 1990-01-23 Ophthalmic Ventures Limited Partnership Ophthalmic stapler
EP0620086B1 (fr) * 1993-04-14 1998-09-02 Stanley-Bostitch, Inc. Pince à agrafer
US5908149A (en) * 1997-03-12 1999-06-01 Ethicon Endo-Surgery, Inc. Skin stapler with multi-directional release mechanism
US5937951A (en) * 1997-07-18 1999-08-17 Ethicon Endo-Surgery, Inc. Skin stapler with rack and pinion staple feed mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4179057A (en) * 1978-11-17 1979-12-18 Senco Products, Inc. Disposable surgical stapling instrument
US4895289A (en) * 1986-12-22 1990-01-23 Ophthalmic Ventures Limited Partnership Ophthalmic stapler
EP0620086B1 (fr) * 1993-04-14 1998-09-02 Stanley-Bostitch, Inc. Pince à agrafer
US5908149A (en) * 1997-03-12 1999-06-01 Ethicon Endo-Surgery, Inc. Skin stapler with multi-directional release mechanism
US5937951A (en) * 1997-07-18 1999-08-17 Ethicon Endo-Surgery, Inc. Skin stapler with rack and pinion staple feed mechanism

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113197606A (zh) * 2021-06-21 2021-08-03 苏州法兰克曼医疗器械有限公司 一种皮肤吻合器压钉结构
CN113197606B (zh) * 2021-06-21 2022-04-01 苏州法兰克曼医疗器械有限公司 一种皮肤吻合器压钉结构
CN113288289A (zh) * 2021-07-05 2021-08-24 苏州法兰克曼医疗器械有限公司 一种可调节缝合钉折弯高度的吻合器
CN113288289B (zh) * 2021-07-05 2022-04-01 苏州法兰克曼医疗器械有限公司 一种可调节缝合钉折弯高度的吻合器

Also Published As

Publication number Publication date
AUPS209502A0 (en) 2002-06-06

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