WO2022168342A1 - 外科用器具 - Google Patents
外科用器具 Download PDFInfo
- Publication number
- WO2022168342A1 WO2022168342A1 PCT/JP2021/022244 JP2021022244W WO2022168342A1 WO 2022168342 A1 WO2022168342 A1 WO 2022168342A1 JP 2021022244 W JP2021022244 W JP 2021022244W WO 2022168342 A1 WO2022168342 A1 WO 2022168342A1
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- WIPO (PCT)
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- shaft
- surgical instrument
- tool head
- conversion mechanism
- cylindrical body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
- A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
- A61B1/00087—Tools
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
- A61B1/00174—Optical arrangements characterised by the viewing angles
- A61B1/00183—Optical arrangements characterised by the viewing angles for variable viewing angles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
- A61B1/018—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor for receiving instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/313—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for introducing through surgical openings, e.g. laparoscopes
- A61B1/3132—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for introducing through surgical openings, e.g. laparoscopes for laparoscopy
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B17/295—Forceps for use in minimally invasive surgery combined with cutting implements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3201—Scissors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
- A61B2017/2929—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2932—Transmission of forces to jaw members
- A61B2017/2933—Transmission of forces to jaw members camming or guiding means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2926—Details of heads or jaws
- A61B2017/2932—Transmission of forces to jaw members
- A61B2017/2943—Toothed members, e.g. rack and pinion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/29—Forceps for use in minimally invasive surgery
- A61B2017/2947—Pivots
Definitions
- This invention relates to surgical instruments used in minimally invasive surgery such as laparoscopic surgery.
- Patent Document 1 relates to surgical instruments used in laparoscopic surgery and the like.
- This surgical instrument is broadly divided into tool heads 1, 2, a central system 3, a body portion 5 and a proximal handle 4 from the distal side.
- the tool head portion at the distal end can be freely moved in the lateral direction or the like by hand operation of the operator. can be released.
- the central system 3 is mainly responsible for the function of converting the operation at hand of the operator into movement of the tool head.
- a third outer shaft 3a, a second intermediate shaft 3b, a central rod 3c, a universal joint 3d, a rigid slider 3e, a cylinder 3f, a rear rotating collar 3g, rigid links 3h, 3i, a front cover. 2a, a rigid cylindrical rod 2b, a front rotating collar 2c, etc. are required.
- Surgical instruments are used very close to the surgical field inside the patient's body and are used in surgery within a limited time, so they must be robust and must not break down during surgery. If a part of the surgical instrument falls into the surgical field, it is necessary to find and extract the part, which poses a serious problem.
- the functionality of freely moving the tool head at the distal end and the safety of the surgical instrument thus conflict with each other.
- the present invention has been made in view of the above points, and its object is to provide a surgical instrument for use in minimally invasive surgery such as laparoscopic surgery, in which the head portion can be freely moved by a simple manual operation by the operator. To provide a highly safe surgical instrument which can be moved freely and has a reduced number of parts.
- the present invention (1) comprises a tool head having degrees of freedom in the longitudinal and lateral directions at the distal portion, and a longitudinal direction of the tool head at the proximal portion.
- a surgical instrument comprising a first operating portion for manipulating a degree of freedom and a second operating portion for manipulating a lateral degree of freedom, wherein the tool head comprises a movable portion having a longitudinal degree of freedom; a base portion that defines the lateral orientation of the movable portion and the first operation portion are connected by a first connection structure, and the base portion and the second operation portion are connected by a second connection structure
- the first connecting structure is connected by a structure, and the first connecting structure includes a first conversion mechanism that converts linear motion by the first operation portion into rotational motion, a first shaft rotated by the first conversion mechanism, the first a universal joint provided at the distal end of the shaft; a second conversion mechanism connected to the universal joint for converting rotational motion into linear motion; and a distal end of the second
- the formed cylindrical shaft and the rack that meshes with the pinion are formed in a substantially semicircular shape, the rack is provided on the upper surface, and the rack base portion is connected to the base portion.
- the surgical instrument is characterized in that the intersection of the axes of the two pivots is on the axis of rotation of the rack.
- This surgical instrument has two operating sections, a first operating section and a second operating section, as operating sections operated by the operator.
- the first operating part is for moving the movable part in the vertical direction
- the second operating part is for moving the base part in the horizontal direction.
- a first connection structure that connects the first operation portion and the tool head and a second connection structure that connects the second operation portion and the tool head are provided.
- the first connecting structure includes a first conversion mechanism that converts linear motion by the first operation part into rotary motion, a first shaft that rotates by the first conversion mechanism, and a distal end portion of the first shaft. It has a universal joint, a second conversion mechanism connected to the universal joint for converting rotary motion into linear motion, and a crank provided at the distal end of the second conversion mechanism and connected to the proximal end of the movable part. is doing.
- the operation of the first operating portion is transmitted to the tool head by this first connecting structure.
- the second connecting structure transmits the rotational motion of the second operation part, and includes a cylindrical shaft coaxially containing the first shaft and having a pinion formed at its distal end, and a rack that meshes with the pinion. a rack base formed in a shape and having a rack on the upper surface thereof. The operation of the second operating portion is transmitted to the tool head by this second connecting structure.
- the base part connected to the rack base part is formed by the operation of the second operation part. Even if the orientation is changed in the lateral direction by a certain angle, the movable portion can also be moved in the lateral direction by the same angle, and the orientation can be changed in the vertical direction by operating the first operating portion. With this structure, it is possible to provide a highly safe surgical instrument with a reduced number of parts and a tool head that can be freely moved with simple hand operation.
- the first conversion mechanism has a first cylindrical body through which the first shaft passes, and a first spiral groove is formed on a side surface of the first cylindrical body.
- the first shaft is formed with a first slide which is guided by the first helical groove and slides, and the outer surface of the first cylindrical body is engaged with the first operation portion to perform the first operation.
- a first cylindrical body engaging portion is formed to transmit a linear motion by the portion to the first cylindrical body, and when the first operation portion is moved, the first cylindrical body moves linearly, and the first cylindrical body moves linearly.
- the surgical instrument according to the present invention (1) characterized in that a slide is guided in the first spiral groove to rotate the first shaft.
- the combination of the first cylindrical body having the first helical groove and the first shaft having the first slide causes the linear motion of the first operating portion to rotate the first shaft. Since the motion is converted into motion, the first shaft can be rotated by the motion of the first operating portion with a simple structure.
- the second conversion mechanism has a second cylindrical body that rotates while being connected to the universal joint, and a second spiral groove is formed on a side surface of the second cylindrical body.
- a second shaft connected to the proximal end of the crank is provided, the second shaft is formed with a second slider that slides while being guided by the second spiral groove, and the second cylindrical body is
- the surgical instrument according to the present invention (1) or (2) characterized in that when it rotates, the second slide is guided by the second helical groove so that the second shaft moves linearly.
- the combination of the second cylindrical body having the second helical groove and the second shaft having the second slide causes the rotational motion of the first shaft to be the linear motion of the second shaft.
- the second shaft can be linearly moved by the movement of the first operation part with a simple structure, and this movement can be transmitted to the crank to move the movable part.
- the present invention (4) is the surgical instrument according to any one of the present inventions (1) to (3), wherein the movable portion and the base portion of the tool head have a forceps function to grasp a living tissue. It is a tool for
- the present invention (4) is one of them.
- the tool head has a so-called biological forceps function.
- a bioforceps function with a high degree of freedom and safety can be provided simply by making the shape of the movable part of the tool head and the shape of the base part suitable for gripping a part of the body tissue.
- the present invention (5) is the surgical instrument according to any one of the present inventions (1) to (3), wherein the movable portion and the base portion of the tool head have a scissors function for cutting living tissue. It is a tool for
- the present invention (5) gives the tool head a so-called scissors function.
- a safe and highly flexible scissors function can be provided simply by making the shape of the movable part of the tool head and the shape of the base part suitable for cutting a part of the body tissue.
- the present invention (6) is the surgical instrument according to any one of the present inventions (1) to (3), wherein the movable portion of the tool head is equipped with a camera for viewing inside the body, and has an endoscopy function. It is a surgical instrument.
- the surgical instrument of the present invention (6) has a camera mounted on the movable part of the tool head and can play an endoscopic role capable of freely changing its direction both horizontally and vertically. becomes.
- a surgical instrument used in minimally invasive surgery such as laparoscopic surgery, in which the head portion can be freely moved by simple hand operation by the operator, and the number of parts is reduced.
- a highly safe surgical instrument can be provided.
- FIG. 1 is a perspective view showing the entirety of a surgical instrument having a biopsy forceps function according to Example 1 of the present invention
- FIG. 1 is a perspective view showing the inside of a portion of the surgical instrument of Example 1.
- FIG. 2 is a perspective view showing an enlarged state of the vicinity of the first conversion mechanism portion of the surgical instrument of Example 1.
- FIG. FIG. 4 is a perspective view showing the second conversion mechanism portion of the surgical instrument of Example 1 and its peripheral portion;
- FIG. 10 is a perspective view showing the second conversion mechanism portion of the surgical instrument of Example 1 and its peripheral portion, and is a perspective view with a sheath tube attached.
- FIG. 10 is a perspective view showing the second conversion mechanism portion of the surgical instrument of Example 1 and its peripheral portion, showing the perspective view when the second shaft is moved to the left.
- FIG. 4 is a perspective view showing the second connecting structure of the surgical instrument of Example 1 and its surroundings.
- FIG. 4 is an enlarged perspective view showing the pinion and rack portions of the second connecting structure of the surgical instrument of Example 1 and their peripheral portions;
- FIG. 1 is a perspective view of a tool head portion and peripheral portions thereof of a surgical instrument having a biopsy forceps function according to Example 1 of the present invention;
- FIG. 1 is a perspective view of a surgical instrument 1 having a biopsy forceps function according to Example 1 of the present invention.
- a cover 90 is shown which encloses the connecting members between the tool head 30 and the tool head 30 .
- a hole 91 formed in the cover 90 is a hole for facilitating postoperative washing.
- the first operating portion 10 is of a handle type having an operating movable portion 11, a plate spring 12 and an operating fixed portion 13, the form of the first operating part 10 is not limited to this form.
- a first conversion mechanism 40A is shown above the first operation unit 10 .
- the first shaft 41 rotates due to the movement of the first cylindrical body 42 that interlocks with the movement of the first operation section 10 via the first cylindrical body engaging section 44 .
- the first helical groove 43 plays a role of converting this linear motion into rotary motion, and the mechanism will be explained in detail with reference to FIG.
- the tool head 30 comprises a base portion 32 of the tool head 30 which is oriented transversely to the axial direction of the cover 90 and a movable portion 31 of the tool head 30 which is oriented longitudinally.
- FIG. 2 shows the surgical instrument 1 of FIG. 1 with the cover 90 removed.
- the first connecting structure 50A shown in FIG. 2 is a connecting structure that connects the first operating portion 10 and the movable portion 31 of the tool head 30.
- the second connecting structure 50B is a connecting structure that connects the second operation portion 20 and the base portion 32 of the tool head 30 .
- the cylindrical shaft 51 transmits the rotation of the second operating portion 20 as it is to the pinion 52 at the tip as rotational motion.
- the pinion 52 meshes with the rack 54 arranged on the rack base portion 53 to rotate the rack base portion 53 . Since the rack base portion 53 and the base portion 32 of the tool head 30 are directly connected, the base portion 32 rotates.
- the illustrated second operation section rotation stopping member 21 is a member for stopping the rotation of the second operation section 20 so that the second operation section 20 does not rotate carelessly after the second operation section 20 has been rotated and the operation is completed.
- FIG. 3 is a perspective view showing an enlarged state of the first conversion mechanism 40A portion of the medical device of Example 1.
- FIG. The engaging concave portion 14 formed in the upper portion of the operation movable portion 11 and the first cylindrical body engaging portion 44 attached to the outer surface of the first cylindrical body 42 are engaged with each other, and the first operating portion 10 is operated.
- the motion is transmitted to the first tubular body 42, and the first tubular body 42 moves forward and backward. With this movement, the first slide 45 formed on the first shaft 41 moves along the first spiral groove 43, so that the first shaft 41 rotates.
- a universal joint 60 is attached to the tip of the first shaft 41 .
- the universal joint 60 comprises a first bifurcated piece 61 , an intermediate body 63 , a first pivot 62 and a second pivot 64 .
- the second cylindrical body 65 on the distal end side is enclosed in an outer tube 71 (see FIG. 5), and the outer tube 70 is provided with a second forked piece 69 (see FIG. 5) connected to the second pivot shaft 64.
- the projection 68 is for connecting the second cylindrical body 65 and the outer tube 70, but since the outer tube 70 is removed in FIG. 4, the first shaft 41 and the tool head 30 are still connected. do not have.
- a second helical groove 66 is cut in the second tubular body 65, and a second slide 69 attached to a second shaft 67 connected to the proximal end 80a of the crank 80 allows the rotation of the second tubular body 65. Along with this, it moves forward and backward while being guided by the second spiral groove 66 . This forward and backward motion is transmitted to the crank 80 and causes a change in the vertical orientation of the movable portion 31 of the crank 30 .
- FIG. 5 shows a state in which the outer tube 70 is attached, and the second fork 71 is connected to the second pivot 64 .
- the movable part 31 is in an open state with the second slider 69 moved to the most proximal side (right side in the drawing).
- the movable part 31 is in a closed state with the second slider 69 moved to the most distal side (left side in the figure). This state is the same as the state shown in FIG.
- FIG. 7 schematically shows movement of the crank 80.
- FIG. FIG. 7(A) shows a state in which the second slide 69 is most proximate.
- the L-letter 82 is composed of an L-letter first portion 82 a and an L-letter second portion 82 b , and the L-letter first portion 82 a corresponds to the movable portion 31 of the tool head 30 .
- the second shaft 67 and the proximal end of the L-shaped second portion 82b are connected by an arm 81, and the second shaft and the arm 81 are connected so as to be rotatable about a first shaft 83 as an axis.
- the arm 81 and the L-shaped second portion 82b are rotatably connected with a second shaft 84 as an axis.
- the third shaft 85 is provided for the L-shaped body 82 to rotate around this shaft.
- the second slide 69 is moved from the position in FIG. 7A to the most distal position by the rotation of the first shaft 41 .
- the second slide 69 moves from the position P1 to P2 indicated by the dotted line by the arrow, and the second shaft 67 moves the same distance as this movement. direction.
- the second shaft 67 moves distally, the arm 81 turns vertically, and the L-shaped body 82 (the movable part 31 of the tool head 30) is displaced so that the L-shaped first portion 82a becomes horizontal.
- the position P3 of the third shaft 85 has a structure that does not move.
- FIG. 8 is a diagram explaining the movement of the surgical instrument 1 in a state in which the first conversion structure 50A and the second conversion structure 50B are combined.
- the pinion 52 attached to the distal end of the cylindrical shaft 51 rotates and meshes with the rack 54 formed on the upper surface of the rack base portion 53 in a substantially semicircular shape. Since the rack base portion 53 and the base portion 32 of the tool head 30 are connected, the direction of the base portion 32 is changed.
- the universal joint 60 changes the direction of the movable part 31 by the same amount as the base part 32 around the first pivot 62 . This is because the intersection of the axis of the first pivot 62 and the axis of the second pivot 64 is on the axis of the rotation axis of the rack base portion 53 . As a result, the movable portion 31 also rotates at the same angle as the base portion 32 rotates at the same angle as the rack base portion 53, and the movable portion 31 can move in the vertical direction by the first conversion mechanism 40A. .
- FIG. 9 is a perspective view of the second connecting structure 50B viewed from the proximal side.
- FIG. 10 is a perspective view showing the distal end of the surgical instrument 1 having a forceps function for grasping living tissue.
- the movable portion 31 has an upper grip portion 31a, and the base portion 32 has a lower grip portion 32a.
- the surgical instrument of the present invention is a surgical instrument used in minimally invasive surgery such as laparoscopic surgery, and the head portion can be freely moved by a simple manual operation by the operator. Moreover, it is possible to provide a highly safe surgical instrument with a reduced number of parts.
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Abstract
Description
10 第1操作部
11 操作可動部分
12 板ばね
13 操作固定部分
14 係合凹部
20 第2操作部
21 第2操作部回転止め部材
30 ツールヘッド
31 可動部
31a 上側把持部
32 基盤部
32a 下側把持部
40A 第1変換機構
40B 第2変換機構
41 第1シャフト
42 第1筒状体
43 第1らせん溝
44 第1筒状体係合部
45 第1滑子
50A 第1変換構造体
50B 第2変換構造体
51 筒状シャフト
52 ピニオン
53 ラック基盤部
54 ラック
55 縦溝
60 ユニバーサルジョイント
61 第1二又片
62 第1枢軸
63 中間体
64 第2枢軸
65 第2筒状体
66 第2らせん溝
67 第2シャフト
68 突起
69 第2滑子
70 外とう管
71 第2二又片
80 クランク
80a 近位端
81 腕
82 L字体
82a L字体第1部分
82b L字体第2部分
83 第1軸
84 第2軸
85 第3軸
90 カバー
91 穴
Claims (6)
- 遠位部に縦方向と横方向の自由度を有するツールヘッドを備え、近位部に前記ツールヘッドの縦方向の自由度を操作する第1操作部と横方向の自由度を操作する第2操作部を備える外科用器具であって、
前記ツールヘッドは、縦方向の自由度を有する可動部と、当該ツールヘッドの横方向の向きを規定する基盤部とを備え、
前記可動部と前記第1操作部とは、第1連結構造体で連結され、
前記基盤部と前記第2操作部とは、第2連結構造体で連結され、
前記第1連結構造体は、前記第1操作部による直線運動を回転運動に変換する第1変換機構と、当該第1変換機構によって回転する第1シャフトと、当該第1シャフトの遠位端部に備えられたユニバーサルジョイントと、当該ユニバーサルジョイントに連結され、回転運動を直線運動に変換する第2変換機構と、当該第2変換機構の遠位端部に備えられ、前記可動部の近位端部とつながるクランクとを有し、
前記第2連結構造体は、前記第2操作部の回転運動を伝達し、前記第1シャフトを同軸に内包し遠位部にピニオンが形成された筒状シャフトと、前記ピニオンと噛み合うラックが、略半円周状に形成され、当該ラックを上面に備え、前記基盤部とつらなるラック基盤部と、を有し、
前記ユニバーサルジョイントの2つの枢軸の軸心の交点が、前記ラックの回旋軸の軸心上にあることを特徴とする外科用器具。 - 前記第1変換機構は、前記第1シャフトが貫通する第1筒状体を有し、当該第1筒状体の側面には、第1らせん溝が形成されており、前記第1シャフトには前記第1らせん溝に案内されて滑動する第1滑子が形成され、前記第1筒状体の外表面には前記第1操作部と係合して第1操作部による直線運動を当該第1筒状体に伝達する第1筒状体係合部が形成され、
前記第1操作部を動かすと、前記第1筒状体が直線運動をし、前記第1滑子が前記第1らせん溝に案内させられて、前記第1シャフトが回転することを特徴とする請求項1に記載の外科用器具。 - 前記第2変換機構は、前記ユニバーサルジョイントとつながって回転する第2筒状体を有し、当該第2筒状体の側面には、第2らせん溝が形成されており、前記クランクの近位端に連結する第2シャフトが備えられ、当該第2シャフトには前記第2らせん溝に案内されて滑動する第2滑子が形成され、
前記第2筒状体が回転すると、前記第2滑子が前記第2らせん溝に案内させられて、前記第2シャフトが直線運動をすることを特徴とする請求項1または2に記載の外科用器具。 - 請求項1~3のいずれか1項に記載の外科用器具であって、前記ツールヘッドの前記可動部と基盤部とで、生体組織を把持する鉗子機能を有する外科用器具。
- 請求項1~3のいずれか1項に記載の外科用器具であって、前記ツールヘッドの前記可動部と基盤部とで、生体組織を切断する鋏機能を有する外科用器具。
- 請求項1~3のいずれか1項に記載の外科用器具であって、前記ツールヘッドの前記可動部に体内を内視するカメラが搭載された内視機能を有する外科用器具。
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GB2214204.6A GB2608920A (en) | 2021-02-02 | 2021-06-11 | Surgical instrument |
CN202180018933.1A CN115279287A (zh) | 2021-02-02 | 2021-06-11 | 外科用器具 |
EP21924731.9A EP4101400B1 (en) | 2021-06-11 | Surgical instrument | |
US17/910,030 US20230107823A1 (en) | 2021-02-02 | 2021-11-06 | Surgical instrument |
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US20160324514A1 (en) * | 2015-05-06 | 2016-11-10 | Covidien Lp | Surgical instrument with articulation assembly |
JP2018504992A (ja) * | 2015-02-16 | 2018-02-22 | コヴィディエン リミテッド パートナーシップ | ロボット外科手術アセンブリ及びその電気外科手術器具 |
JP2018094290A (ja) * | 2016-12-16 | 2018-06-21 | 上銀科技股▲分▼有限公司 | クランプ器具 |
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JP2018504992A (ja) * | 2015-02-16 | 2018-02-22 | コヴィディエン リミテッド パートナーシップ | ロボット外科手術アセンブリ及びその電気外科手術器具 |
US20160324514A1 (en) * | 2015-05-06 | 2016-11-10 | Covidien Lp | Surgical instrument with articulation assembly |
JP2018094290A (ja) * | 2016-12-16 | 2018-06-21 | 上銀科技股▲分▼有限公司 | クランプ器具 |
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US20230107823A1 (en) | 2023-04-06 |
GB202214204D0 (en) | 2022-11-09 |
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CN115279287A (zh) | 2022-11-01 |
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