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WO2016063850A1 - Dispositif de préhension - Google Patents

Dispositif de préhension Download PDF

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Publication number
WO2016063850A1
WO2016063850A1 PCT/JP2015/079519 JP2015079519W WO2016063850A1 WO 2016063850 A1 WO2016063850 A1 WO 2016063850A1 JP 2015079519 W JP2015079519 W JP 2015079519W WO 2016063850 A1 WO2016063850 A1 WO 2016063850A1
Authority
WO
WIPO (PCT)
Prior art keywords
piece
linear motion
pinching
elastic member
inclined surface
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/JP2015/079519
Other languages
English (en)
Japanese (ja)
Inventor
保幸 小林
全弘 斎藤
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.)
Namiki Precision Jewel Co Ltd
Original Assignee
Namiki Precision Jewel Co 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 Namiki Precision Jewel Co Ltd filed Critical Namiki Precision Jewel Co Ltd
Priority to JP2016555221A priority Critical patent/JPWO2016063850A1/ja
Publication of WO2016063850A1 publication Critical patent/WO2016063850A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/28—Surgical forceps

Definitions

  • the present invention relates to a pinching device that can be used for pinching medical tools, organs, and the like, and pinching organs at a medical site.
  • Patent Document 1 a plurality of clip pieces (gripping members 1 and 2) that open and close by rotating around a rotation fulcrum portion and the clip A cylindrical member (fixed tube 10) supporting the rotating fulcrum portion so that the front end side of the piece (gripping members 1, 2) protrudes forward, and the cylindrical member (fixed tube 10) is inserted.
  • a medical forceps provided with a plurality of wires (W) and configured to rotate the pinching pieces (gripping members 1, 2) by pulling the wire (W) to one or the other.
  • the wire when the conventional technique is downsized to apply to laparoscopic surgery or the like, the wire must be selected to be extremely thin as the outer diameter of the cylindrical member is reduced, and the wire itself or When the strength and durability of the connecting portion of the wire and the like are lowered, the holding force by the holding piece is limited. Further, since the wire is slackened due to elongation of the wire, looseness of the coupling portion, and the like, and the operability is lowered, it is necessary to provide a mechanism for removing this slackness.
  • the present invention has been made in view of the above-described conventional circumstances, and a problem to be solved by the present invention is to provide a pinching device that can be reduced in size and improved in durability and operability.
  • One means for solving the above-described problem is that the plurality of sandwiching pieces that open and close by rotating around the pivoting fulcrum portion and the front end side of the sandwiching piece project forward.
  • An elastic member connected to the linear movement member on the side, and the linear movement of the linear movement member is transmitted to the pinching piece via the elastic member, and the pinching piece is rotated around the rotating fulcrum portion as a fulcrum. It is made to move.
  • the present invention is configured as described above, it is possible to improve durability and operability after downsizing a pinching device applicable for medical use.
  • a first feature of the present embodiment is that the plurality of sandwiching pieces that open and close by rotating with the pivoting fulcrum portion as a fulcrum, and the pivoting fulcrum so that the front end side of the sandwiching piece protrudes forward.
  • a cylindrical member that supports the portion, an advancing / retracting mechanism that is supported in the cylindrical member and moves the linearly moving member back and forth, and a front end side is connected to an outer peripheral side of the rotating fulcrum portion of the clip piece and a rear end side
  • an elastic member connected to the linear motion member, and the linear motion of the linear motion member is transmitted to the pinching piece via the elastic member, thereby rotating the pinching piece.
  • the “clamping device” includes a mode in which an object is held on the front end side of the plurality of clip pieces, a mode in which an object is clipped on the front end side of the plurality of clip pieces, and the like.
  • the “elastic member” includes a leaf spring, a coil spring, a rubber body, and the like. According to the above configuration, when the linear motion member is advanced and retracted by the advance / retreat mechanism, the linear motion of the linear motion member is transmitted to the sandwich piece via the elastic member, and the sandwich piece rotates to Open and close between. When a load is applied to the clip piece, the load can be reduced by the elasticity of the elastic member, and as a result, durability and operability can be improved.
  • the third feature is that the elastic member is a leaf spring as a preferred specific embodiment.
  • the pinching device 1 includes a plurality of pinching pieces 10 that are opened and closed by turning around a turning fulcrum portion 21 and a front end side of the pinching piece 10 that protrudes forward.
  • a cylindrical member 20 that supports the portion 21; an advancing / retracting mechanism 30 that is supported in the cylindrical member 20 to advance and retract the linear motion member 31; and a front end side of the pinch piece 10 on the outer peripheral side of the rotating fulcrum portion 21
  • An elastic member 40 having a rear end connected to the linear motion member 31 and transmitting the linear movement of the linear motion member 31 to the pinching piece 10 via the elastic member 40. 10 is rotated (see FIGS. 1 to 4).
  • Two sandwich pieces 10 are provided so as to overlap in a direction orthogonal to the center of the cylindrical member 20. These two pinching pieces 10 and 10 are rotatably supported by a common rotation fulcrum 21 (shaft member) inserted through the rear end side.
  • the two sandwiching pieces 10 and 10 constitute forceps capable of sandwiching the object A.
  • the sandwiching pieces 10 and 10 rotate and close so that the front end side sandwiching surfaces 11 and 11 approach each other. 11 and 11 are rotated so as to be spaced apart from each other and open.
  • each clip piece 10 At the rear end portion of each clip piece 10, a sliding contact surface 12 that can be slidably contacted by an inclined surface 31a of an advancing / retreating mechanism 30 described later, and a fixing surface 13 to which a front end portion of an elastic member 40 described later is fixed.
  • the sliding contact surface 12 is a flat inclined surface parallel to the rotation axis of the sandwiching piece 10.
  • the to-be-fixed surface 13 is disposed so as to place the rotation fulcrum portion 21 between the to-be-slidable contact surface 12 and is provided substantially parallel to the to-be-slidable contact surface 12.
  • the cylindrical member 20 is a long cylindrical member, and has support piece portions 20a protruding forward on both sides in the radial direction on the front end side thereof, and rotates between the support piece portions 20a on both sides.
  • the fulcrum part 21 (shaft member) is supported.
  • an advancing / retreating mechanism 30, a power supply wiring (not shown) of the advancing / retreating mechanism 30, and the like are accommodated.
  • the rotation fulcrum portion 21 is a columnar or cylindrical shaft member, and both end portions thereof are fixed to both support piece portions 20a and 20a (see FIG. 1) on the front end side of the tubular member 20.
  • the pivot fulcrum portion 21 is inserted in a penetrating manner on the rear end side of the clip pieces 10 and 10 and rotatably supports the clip pieces 10.
  • the advance / retreat mechanism 30 is a mechanism in which the linear motion member 31 is advanced and retracted by a rotational drive source (not shown).
  • the rotational drive source is an electric gear motor, and for example, the rotational force of the motor may be adjusted to an appropriate rotational speed by a planetary gear and output.
  • a feed screw 32 is provided on the front end side of the output shaft in the rotational drive source, and a linear motion member 31 is screwed to the feed screw 32.
  • the linear motion member 31 has a female screw (not shown) screwed into the feed screw 32 therein.
  • the linear motion member 31 is engaged with the spacer 22 fixed to the inner peripheral surface of the cylindrical member 20 so as not to rotate but to advance and retract.
  • the outer peripheral portion of the linear motion member 31 is formed in a prismatic shape, and the outer peripheral portion of the linear motion member 31 is slidably contacted with the inner surface of the spacer 22 and guided in the front-rear direction.
  • a convex portion may be provided on one of the outer peripheral portion of the moving member 31 and the inner peripheral portion of the spacer 22, and a groove for guiding the convex portion in the front-rear direction may be provided on the other.
  • a plurality of (two in the illustrated example) inclined surfaces 31 a are provided at the front end of the linear motion member 31 so as to correspond to the plurality of sandwiching pieces 10, respectively.
  • Each inclined surface 31 a is a flat inclined surface parallel to the rotation axis of the sandwich piece 10.
  • the inclined surface 31a contacts the sliding contact surface 12 at the rear end of the clip piece 10 when the linear motion member 31 moves forward. More specifically, as shown in FIGS. 3 and 4, the inclined surface 31a is a linear motion member in a state where the plurality of sandwiching pieces 10 sandwich the object A or in a state where the plurality of sandwiching pieces 10 are closed. When 31 moves forward while bending the elastic member 40, it bites into the sliding contact surface 12 at the rear end of the pinching piece 10, and the pinching force of the pinching piece 10 is increased. Further, when the linear motion member 31 is retracted, each elastic member 40 is restored to a flat shape after each inclined surface 31a is moved backward from the sliding contact surface 12 as shown in FIG. 2 (FIG. 2). reference).
  • the elastic member 40 is a metal leaf spring that can be elastically bent, and is held in a flat plate shape as shown in FIG. Two elastic members 40 are provided so as to correspond to the two sandwich pieces 10, 10. Each elastic member 40 has its front end sandwiched and secured to the secured surface 13 of the piece 10 and its rear end secured to the linear motion member 31.
  • each elastic member 40 maintains a flat state.
  • the piece 10 is maintained in a state where the tip side is opened.
  • the reaction force received from the object A can be relaxed by the elasticity of the elastic member 40 to improve durability, and the contact of the inclined surface 31 a against the rear end portion of the pinching piece 10 can be improved.
  • a high clamping force can be obtained by contact.
  • the wire does not loosen or slack unlike the prior art, the operability is also good.
  • the small and small pinching device 1 can be easily configured by using a very small motor.
  • forceps was comprised by the two pinching pieces 10 and 10, but as another example, a blade is provided in each pinching piece 10 and an object is formed by the two pinching pieces 10 and 10. It is also possible to configure scissors that cut the squeeze or to open and close three or more sandwich pieces 10.
  • the elastic member 40 was comprised by the leaf
  • the inclined surface 31a of the linear motion member 31 front-end side slidably contact with the rear-end part of the pinch piece 10 is used. It is possible to omit the front end of the linear motion member 31 and make it non-contact with the rear end of the piece 10.
  • the elastic member 40 and the inclined surface 31a were provided with two or more so as to correspond to each of the some pinching piece 10, as another example, one of the elastic member 40 and the inclined surface 31a or It is also possible to provide both in correspondence with only the specific clip piece 10.
  • the motor and the feed screw 32 are used as the advance / retreat mechanism 30.
  • an air motor, a hydraulic motor, and other rotary motors can be used. is there.
  • a structure in which the linear motion member 31 is directly advanced / retracted by a vibration type linear motion mechanism, a linear drive source of an electromagnetic solenoid, or the like can be used.

Landscapes

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

Abstract

La présente invention comprend les éléments suivants : une pluralité de pièces de préhension (10) qui s'ouvrent et se ferment par rotation autour d'une partie pivot de rotation (21) qui sert de pivot ; un élément cylindrique (20) qui supporte la partie pivot de rotation (21) de sorte que les côtés d'extrémité avant des pièces de préhension (10) sont amenés à faire saillie vers l'avant ; un mécanisme d'avance/recul (30) qui est supporté à l'intérieur de l'élément cylindrique (20) et qui amène un élément (31) à mouvement linéaire à avancer et à reculer ; et des éléments élastiques (40) qui sont reliés au niveau de leur côté d'extrémité avant à un côté périphérique externe de la partie pivot de rotation (21) des pièces de préhension (10) et qui sont reliés au niveau de leur côté d'extrémité arrière à l'élément (31) à mouvement linéaire. Un mouvement d'avance linéaire de l'élément (31) à mouvement linéaire est transmis aux pièces de préhension (10) par l'intermédiaire des éléments élastiques (40) pour faire tourner les pièces de préhension (10).
PCT/JP2015/079519 2014-10-21 2015-10-20 Dispositif de préhension Ceased WO2016063850A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016555221A JPWO2016063850A1 (ja) 2014-10-21 2015-10-20 挟み装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014214478 2014-10-21
JP2014-214478 2014-10-21

Publications (1)

Publication Number Publication Date
WO2016063850A1 true WO2016063850A1 (fr) 2016-04-28

Family

ID=55760884

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/079519 Ceased WO2016063850A1 (fr) 2014-10-21 2015-10-20 Dispositif de préhension

Country Status (2)

Country Link
JP (1) JPWO2016063850A1 (fr)
WO (1) WO2016063850A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109044493A (zh) * 2018-09-04 2018-12-21 山东省肿瘤防治研究院（山东省肿瘤医院） 一种多功能肿瘤剥离剪刀

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082000A (en) * 1990-11-29 1992-01-21 Applied Medical Technology, Inc. Biopsy forceps with calde controlled jaws
JPH08164144A (ja) * 1994-12-15 1996-06-25 Terumo Corp 外科用器具
JP2011239922A (ja) * 2010-05-18 2011-12-01 Olympus Corp マニピュレータ
US20120303025A1 (en) * 2011-05-23 2012-11-29 Tyco Healthcare Group Lp Apparatus for Performing an Electrosurgical Procedure
US20130218199A1 (en) * 2010-06-02 2013-08-22 Covidien Lp Apparatus for performing an electrosurgical procedure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5082000A (en) * 1990-11-29 1992-01-21 Applied Medical Technology, Inc. Biopsy forceps with calde controlled jaws
JPH08164144A (ja) * 1994-12-15 1996-06-25 Terumo Corp 外科用器具
JP2011239922A (ja) * 2010-05-18 2011-12-01 Olympus Corp マニピュレータ
US20130218199A1 (en) * 2010-06-02 2013-08-22 Covidien Lp Apparatus for performing an electrosurgical procedure
US20120303025A1 (en) * 2011-05-23 2012-11-29 Tyco Healthcare Group Lp Apparatus for Performing an Electrosurgical Procedure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109044493A (zh) * 2018-09-04 2018-12-21 山东省肿瘤防治研究院（山东省肿瘤医院） 一种多功能肿瘤剥离剪刀
CN109044493B (zh) * 2018-09-04 2020-05-26 山东省肿瘤防治研究院（山东省肿瘤医院） 一种多功能肿瘤剥离剪刀

Also Published As

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