WO2023085411A1 - Instrument médical - Google Patents

Instrument médical Download PDF

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Publication number
WO2023085411A1
WO2023085411A1 PCT/JP2022/042146 JP2022042146W WO2023085411A1 WO 2023085411 A1 WO2023085411 A1 WO 2023085411A1 JP 2022042146 W JP2022042146 W JP 2022042146W WO 2023085411 A1 WO2023085411 A1 WO 2023085411A1
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WO
WIPO (PCT)
Prior art keywords
finger
shaft
opening
forceps
closing
Prior art date
Application number
PCT/JP2022/042146
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English (en)
Japanese (ja)
Inventor
和弘 大村
Original Assignee
和弘 大村
永島医科器械株式会社
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.)
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Publication date
Application filed by 和弘 大村, 永島医科器械株式会社 filed Critical 和弘 大村
Priority to JP2023540656A priority Critical patent/JPWO2023085411A1/ja
Publication of WO2023085411A1 publication Critical patent/WO2023085411A1/fr
Priority to JP2023177520A priority patent/JP7426639B2/ja

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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

Definitions

  • the present invention relates to medical instruments.
  • Medical instruments used on a living body for example, forceps for grasping and compressing (including crushing) biological tissue (see, for example, Patent Document 1), and cutting biological tissue. Scissors and the like are known.
  • a conventional forceps includes a tubular shaft, a jaw that can be opened and closed at the distal end of the shaft, an operating portion that is provided at the proximal end of the shaft and performs opening and closing operation of the jaw, and an operating portion that is provided in the shaft. It has a force transmission section for transmitting force from the section to the jaws. This forceps is an instrument used by being inserted into the body cavity of a living body.
  • the operation part has a pair of gripping members. Further, the grip member has a finger hook portion having a hole for inserting a finger. Also, one or both of the gripping member and the gripping member are provided to be rotatable about the rotation axis with respect to the shaft.
  • the thumb and forefinger are put on the finger hooks, and the finger hooks are moved closer to each other and moved away from each other to rotate the gripping member around the rotation axis to open and close the jaws.
  • An object of the present invention is to provide a medical instrument that can be operated easily and accurately.
  • the medical instrument of the present invention comprises an elongated shaft having a distal end and a proximal end, an openable/closable opening/closing portion provided at the distal end portion of the shaft; a gripping portion connected to the base end portion of the shaft and including a first finger hooking portion for hooking a thumb and a second finger hooking portion for hooking at least one of a little finger and a ring finger; An operation member is provided rotatably about a rotation axis extending in a direction different from the longitudinal direction of the shaft with respect to the grip portion, and the opening/closing portion is opened by rotating the operation member.
  • the operation member includes a third finger rest portion for putting an index finger or a middle finger thereon, and a finger rest portion for putting a finger other than the finger put on the third finger rest portion out of the index finger and the middle finger, and the finger rest portion A finger applied to the is supported in a direction parallel to the rotation axis.
  • the medical instrument of the present invention is preferably forceps or scissors.
  • the present invention when opening and closing the opening/closing part, it is possible to prevent the opening/closing part from shifting or shaking, and to arrange the opening/closing part at the desired position. As a result, work can be performed easily and accurately.
  • the operation member is rotated by the middle finger placed on the third finger rest while the index finger is placed on the finger rest, the operation (during treatment with forceps) of the instrument is more difficult than conventional products without the finger rest. Shaking is prevented, and more stable opening and closing operations are possible. That is, more precise and delicate treatment becomes possible.
  • FIG. 1 is a side view showing the first embodiment of the medical instrument of the present invention.
  • FIG. 2 is a view of the medical instrument shown in FIG. 1 viewed from the +y-axis side.
  • 3 is a partial cross-sectional view of the medical instrument shown in FIG. 1;
  • FIG. FIG. 4 is a partial cross-sectional view of the medical instrument shown in FIG. 1;
  • FIG. 5 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 6 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 7 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 8 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 9 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 10 is a cross-sectional view (a cross-sectional view cut along the xz plane in FIG. 1) of a connecting portion showing a second embodiment of the medical device of the present invention.
  • FIG. 11 is a cross-sectional view (a cross-sectional view cut along the xz plane in FIG. 1) of a connecting portion showing a third embodiment of the medical device of the present invention.
  • FIG. 12 is a side view showing a fourth embodiment of the medical device of the present invention.
  • FIG. 1 is a side view showing the first embodiment of the medical device of the present invention.
  • FIG. 2 is a view of the medical instrument shown in FIG. 1 viewed from the +y-axis side.
  • 3 is a partial cross-sectional view of the medical instrument shown in FIG. 1;
  • FIG. FIG. 4 is a partial cross-sectional view of the medical instrument shown in FIG. 1;
  • FIG. 5 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 6 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 7 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 8 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 9 is a diagram for explaining a usage example (usage method) of the medical instrument shown in FIG.
  • FIG. 1 and the like show the x-axis, the y-axis, and the z-axis as three mutually orthogonal axes.
  • the tip side of the arrow indicating each axis is "+” and the base side is "-”.
  • a direction parallel to the x-axis is called an “x-axis direction”
  • a direction parallel to the y-axis is called a “y-axis direction”
  • a direction parallel to the z-axis is called a “z-axis direction.”
  • the +z-axis direction side is also referred to as “upper” and the -z-axis direction side is referred to as "lower”.
  • the case of viewing from the z-axis direction is referred to as "plan view”.
  • parallel includes not only cases where two lines or planes are completely parallel, but also cases where they are inclined within ⁇ 5°.
  • perpendicular means that two lines or planes are completely orthogonal, i.e., the angle formed by the two lines or planes is not only 90°, but also 85°. It includes the case of less than 90° and the case of more than 90° and 95° or less.
  • a forceps 1 shown in FIG. 1 is an example of a medical instrument used on a living body, and in this embodiment, the forceps is used by being inserted into a body cavity of a living body.
  • the site where the forceps 1 are used is not particularly limited, but in this embodiment, the forceps 1 are nasal forceps used in the nasal cavity.
  • the right-handed forceps 1 will be described as a representative, but in the case of left-handed forceps, for example, the structure may be symmetrical with the right-handed forceps 1 .
  • a forceps 1 (medical instrument) includes a tubular shaft 2 whose base end is closed, and an opening/closing portion 3 (jaw) provided at a distal end portion 21 of the shaft 2 so as to be opened and closed. , a grip portion 4 connected to the base end portion 22 of the shaft 2 , an operation portion 5 rotatably provided at the base end portion 22 of the shaft 2 and performing opening/closing operation of the opening/closing portion 3 , and opening/closing from the operation portion 5 . and a force transmission portion 6 that transmits force to the portion 3 .
  • part of the shaft 2 also serves as the force transmission portion 6 .
  • the shaft 2 has a longitudinal shape (elongated shape) and extends in the y-axis direction. That is, the shaft 2 has a straight shape extending in the y-axis direction. Also, the central axis of the shaft 2 is parallel to the y-axis.
  • the shaft 2 is not limited to this, as long as it has a linear base end, and for example, it may be curved or bent at one or more locations.
  • the shaft 2 has a moving portion 2A and a fixed portion 2B.
  • the moving part 2A and the fixed part 2B are each elongated and arranged to overlap in the z-axis direction.
  • the moving part 2A is configured to be slidable in the longitudinal direction of the fixed part 2B, that is, in the y-axis direction.
  • the moving portion 2A is slid in the ⁇ y-axis direction with respect to the fixed portion 2B by rotating the operation portion 5, which will be described later.
  • the jaw member 31 of the opening/closing section 3 rotates so as to approach the jaw member 32, and the opening/closing section 3 is closed as shown in FIG.
  • the moving portion 2A of the shaft 2 functions as the force transmission portion 6 that transmits force from the operation portion 5 to the opening/closing portion 3.
  • the opening/closing section 3 also has a jaw member 31 (first jaw member) and a jaw member 32 (second jaw member). Also, the jaw member 32 is fixedly provided (connected) to the distal end portion 21 of the shaft 2 . Moreover, the jaw member 31 is provided at the proximal end portion of the jaw member 32 so as to be rotatable about the rotation axis J2. Also, the rotation axis J2 is parallel to the x-axis.
  • the jaw member 31 is not limited to this, and for example, may be provided on the shaft 2 so as to be rotatable around the rotation axis J2.
  • the rotation axis J2 is not limited to this, and may be parallel to the z-axis, or may be inclined with respect to the x-axis (z-axis), for example.
  • the opening/closing part 3 is not limited to this, and for example, only the jaw member 32 may be rotatable, or both jaw members 31 and 32 may be rotatable.
  • the grip portion 4 has a first finger hook portion 41 and a second finger hook portion 42 . Also, the first finger hooking portion 41 and the second finger hooking portion 42 are connected via a branch portion connected to the base end portion 22 of the shaft 2 respectively.
  • the first finger hooking portion 41 has a hole 411 into which a finger (for example, thumb) is inserted.
  • a finger for example, thumb
  • the edge facing the hole 411 has an annular shape, it is not limited to this, and the edge may be notched. Further, the hole 411 may be omitted from the first finger hook portion 41 .
  • the second finger hooking portion 42 has a long portion 421 on which a finger (eg, ring finger, little finger) is hooked.
  • the elongated portion 421 is provided on the ⁇ z-axis side of the first finger hook portion 41 .
  • the elongated portion 421 has a longitudinal shape curved at a plurality of points.
  • the elongated portion 421 does not have a finger-inserting hole, but is not limited to this and may have a finger-inserting hole, for example. In this case, the edge facing the hole of the elongated portion 421 may be annular or notched.
  • the operating portion 5 includes an operating member 51 that is rotatable about a rotation axis J1, and a connecting portion 52.
  • the rotation axis J1 extends in a direction different from the longitudinal direction of the shaft 2, that is, along the x-axis direction.
  • the operating member 51 has a finger rest portion 53 and a third finger rest portion 54 .
  • the finger rest portion 53 and the third finger rest portion 54 are arranged in this order from the shaft 2 side.
  • the finger rest portion 53 has a finger rest surface 531 and an edge portion 532 .
  • the finger contact surface 531 is a surface parallel to the yz plane that supports the index finger, and is a portion on which the operator's index finger is applied.
  • the edge portion 532 is located on the ⁇ y-axis side of the finger contact surface 531 and protrudes from the finger contact surface 531 in the +x-axis direction.
  • the edge 532 positions the index finger of the operator and functions as a stopper to prevent the index finger from slipping during operation.
  • the connecting portion 52 connects the operating member 51 and the base end portion 22 of the shaft 2 .
  • the connecting portion 52 has a first portion 521 , a second portion 522 and a third portion 523 .
  • the first portion 521, the second portion 522, and the third portion 523 are connected to each other in this order from the shaft 2 side.
  • the first portion 521 is a portion that overlaps with the shaft 2 when viewed from the z-axis direction and extends to the -z-axis side.
  • the second portion 522 is a portion extending in the -y-axis direction from the end of the first portion 521 on the -z-axis side.
  • the third portion 523 is a portion extending from the end of the second portion 522 on the -y axis side to the +x axis side.
  • the finger rest portion 53 is connected to the +x-axis side end portion of the third portion 523 .
  • the finger rest portion 53 is located on the +x-axis side of the shaft 2 .
  • the operator does not have to bend the index finger to the position of the shaft 2, and can maintain the natural shape of the finger during operation. Therefore, the effects of the present invention can be obtained more stably.
  • the operation member 51 is rotated only by the middle finger, and the index finger is supported by the finger rest portion 53 . Since the index finger is supported and the middle finger is used to rotate, compared to conventional products that do not have a finger rest, the instrument is prevented from shaking during operation (when using forceps), enabling more stable opening and closing operations. becomes. That is, more precise and delicate treatment becomes possible.
  • the area of the finger contact surface 531 is not particularly limited, and is preferably 1 cm 2 or more and 30 cm 2 or less, more preferably 2 cm 2 or more and 20 cm 2 or less. As a result, the index finger of the operator can be operated more stably, and the effects of the present invention can be obtained more remarkably.
  • the shape of the finger contact surface 531 is not limited to the shape shown in the drawing, and may be any shape.
  • the finger contact surface 531 is flat in this embodiment, the present invention is not limited to this, and may be, for example, a curved concave surface or a curved convex surface. Further, the finger contact surface 531 may be subjected to anti-slip processing such as embossing.
  • the dimensions of the forceps 1 are not particularly limited, and are appropriately set according to the application.
  • the forceps 1 are nose forceps, and the length of the shaft 2 is preferably 80 mm or more and 150 mm or less, more preferably 100 mm or more and 140 mm or less.
  • the cross-sectional shape of the shaft 2 is a quadrangle (rectangular in the illustrated configuration), and one side of the two sides sharing the vertex (in the illustrated configuration, it extends in the x-axis direction).
  • the length (average value) of the extended sides is preferably 1.5 mm or more and 4 mm or less, more preferably 2 mm or more and 3.5 mm or less.
  • the length (average value) of the other side is preferably 2.5 mm or more and 14 mm or less, more preferably 3 mm or more and 12 mm or less.
  • the constituent material of the forceps 1 is not particularly limited, and is appropriately set.
  • metal materials such as stainless steel, resin materials, and the like can be used.
  • endoscopic sinus surgery is performed by inserting an electronic endoscope into the nasal cavity and viewing the endoscopic image displayed on a monitor (not shown). Furthermore, it goes without saying that a navigation system may be used.
  • the index finger and the middle finger are put on the operation unit 5 . More specifically, the index finger is put on the finger rest portion 53 of the operation portion 5 and the middle finger is put on the third finger rest portion 54 .
  • the operating portion 5 of the forceps 1 is operated to close the opening/closing portion 3. That is, as shown in FIG. 4, the index finger pulls the third finger hooking portion 54 of the operating portion 5 in the +y-axis direction. As a result, the operating portion 5 rotates clockwise in FIG. 4 around the rotating shaft J1, and the moving portion 2A connected to the operating portion 5 via the connecting shaft J3 moves in the -y-axis direction. . Therefore, the jaw member 31 of the opening/closing portion 3, which is connected to the moving portion 2A via the connecting shaft J4, rotates clockwise in FIG. close.
  • the forceps 1 are inserted into the nasal cavity from the opening/closing part 3, the forceps 1 are pushed forward, and the opening/closing part 3 reaches the lesion (affected part).
  • the opening/closing part 3 is arranged so that the lesion is located between the jaw members 31 and 32 of the opening/closing part 3 .
  • the operation part 5 is operated to close the opening/closing part 3, and the lesion is pinched and compressed by the opening/closing part 3, and the lesion is crushed (destroyed) and removed.
  • the operation member 51 is rotated only by the middle finger, and the index finger is supported by the finger rest portion 53 . Since the index finger is supported and the middle finger is used to rotate, compared to conventional products that do not have a finger rest, the instrument is prevented from shaking during operation (treatment with the forceps 1), and opening and closing operations are more stable. It becomes possible. That is, more precise and delicate treatment becomes possible. In addition, for example, it is possible to perform the procedure even in a sitting position, which enables an accurate procedure.
  • the gripping method of the forceps 1 may be used by inserting it into the hole 411 of the first finger hook 41 up to the base of the thumb.
  • the forceps 1 can be stably gripped, and the same effect as described above can be exhibited.
  • the first finger hooking portion 41 may be gripped by the base between the thumb and index finger.
  • Other finger positions are the same as the gripping method shown in FIG. With such a gripping method as well, the forceps 1 can be stably gripped, and the same effect as described above can be exhibited.
  • the tip of the thumb is positioned at the proximal end portion 22 of the shaft without inserting the thumb into the hole 411 of the first finger hook portion 41, that is, the first finger hook portion is inserted.
  • the grip portion 4 may be gripped so as to grip the portion 41 . With such a gripping method as well, the forceps 1 can be stably gripped, and the same effect as described above can be exhibited.
  • the forceps 1 may be held upside down. That is, the forceps 1 may be grasped by putting the thumb on 42, the index finger on the third finger-holding portion 54, the middle finger on the finger-holding portion 53, and the first finger-holding portion 41 with the ring finger and little finger. . With such a gripping method, the forceps 1 can be stably gripped.
  • the forceps 1 (medical instrument) of the present invention has a distal end portion 21 and a proximal end portion 22, and is provided at the elongated shaft 2 and the distal end portion 21 of the shaft 2,
  • a grip part 4 comprising an opening/closing part 3 that can be opened and closed, a first finger hook part 41 connected to the base end part 22 of the shaft 2 and on which the thumb is hooked, and a second finger hook part 42 on which at least one of the little finger and the ring finger is hooked.
  • an operating member 51 provided rotatably around a rotation axis J1 extending in a direction different from the longitudinal direction of the shaft 2 with respect to the grip portion 4, and rotating the operating member 51.
  • the operation member 51 includes a third finger-holding portion 54 on which the middle finger is put, and a finger-holding portion 53 on which the index finger is put. be done. According to such forceps 1 , the operation member 51 is rotated only by the middle finger, and the index finger is supported by the finger rest portion 53 . Since the index finger is supported and the middle finger is used to rotate, compared to conventional products that do not have a finger rest, the instrument is prevented from shaking during operation (treatment with the forceps 1), and opening and closing operations are more stable. It becomes possible. That is, more precise and delicate treatment becomes possible. In addition, for example, it is possible to perform the procedure even in a sitting position, which enables an accurate procedure.
  • the present invention is not limited to this.
  • the configuration may be such that the middle finger is supported by the finger rest portion 55 and the rotation operation is performed with the index finger.
  • the finger contact portion 53 is formed in a region where the pad of the index finger can come into contact during the period from the start to the end of the rotation operation of the operation member 51 . This eliminates the need to increase the size of the finger contact portion 53 more than necessary, and more stable turning operation can be realized.
  • the finger contact portion 53 has a finger contact surface 531 that supports the index finger. Thereby, the index finger can be effectively supported. Therefore, a more stable rotation operation can be realized.
  • the normal of the finger contact surface 531 extends in a direction different from the direction in which the shaft 2 extends. Thereby, the finger contact surface 531 can effectively support the index finger. Therefore, a more stable rotation operation can be realized.
  • FIG. 10 is a cross-sectional view (a cross-sectional view cut along the xz plane in FIG. 1) of a connecting portion showing a second embodiment of the medical device of the present invention.
  • the second embodiment is the same as the first embodiment except that the configuration of the operating member is different.
  • the forceps 1 of this embodiment has three operating members 51 having third portions 523 with different lengths.
  • the third portion 523 is detachably attached to the second portion 522 .
  • the third portion 523 shown in FIG. 10(a) is the shortest of the three.
  • the third portion 523 shown in FIG. 10(b) has the second shortest length among the three.
  • the third portion 523 shown in FIG. 10(c) is the longest of the three.
  • One of the three operating members 51 can be selectively used.
  • each third portion 523 has a female screw portion 523a, which is a recess into which the screw 100 is inserted.
  • the second portion 522 also has a through hole 522a into which the screw 100 is inserted.
  • the operation member 51 having the third portion 523 of the desired length can be obtained.
  • the operator can obtain the forceps 1 with the finger contact surface 531 located at an appropriate position according to the size of his hand and the length of his fingers.
  • FIG. 11 is a cross-sectional view (a cross-sectional view cut along the xz plane in FIG. 1) of a connecting portion showing a third embodiment of the medical device of the present invention.
  • the third embodiment is the same as the first embodiment except that the configuration of the operating member is different.
  • the forceps 1 of this embodiment is configured such that the position of the finger contact surface 531 in the x-axis direction can be adjusted.
  • the second portion 522 is formed with a through hole 522b into which the rotating member 200 is inserted.
  • a cylindrical portion 522c projecting in the +x-axis direction is formed around the through hole 522b.
  • the third portion 523 is formed with a cylindrical portion 523b projecting in the -x-axis direction.
  • the tubular portion 523b is inserted into the tubular portion 522c.
  • the inner peripheral portion of the cylindrical portion 523b is a female screw portion 523a that is screwed with the rotary member 200. As shown in FIG.
  • the rotating member 200 has a rod shape with a male screw portion 200a, the head portion 200b of which is located on the -x-axis side of the second portion 522, and the male screw portion 200a is inserted into the through hole 522b. Also, the male threaded portion 200a of the rotary member 200 is engaged with the female threaded portion 523a of the inner peripheral portion of the tubular portion 522c.
  • the rotating member 200 is supported by a ring-shaped support member 300 in a state in which it is rotatable and its movement in the x-axis direction is restricted.
  • the position of the finger contact surface 531 in the x-axis direction is closest to the -x-axis side, that is, the position closest to the shaft 2.
  • the position of the finger contact surface 531 in the x-axis direction moves away from the -x-axis side, that is, away from the shaft 2 .
  • the position of the finger contact surface 531 in the x-axis direction can be adjusted continuously. Therefore, the operator can obtain the forceps 1 in which the finger contact surface 531 is located at an appropriate position according to the size of his hand and the length of his fingers.
  • FIG. 12 is a side view showing a fourth embodiment of the medical device of the present invention.
  • the fourth embodiment will be described with a focus on the differences from the above-described embodiments, and the description of the same matters will be omitted.
  • the fourth embodiment is the same as the first embodiment except that the configuration of the operating member is different.
  • the operating section 5 has a finger rest section 55 and a third finger rest section 56 . Further, the finger contact portion 55 has a finger contact surface 551 .
  • the third finger hook portion 56 and the finger hook portion 55 are arranged side by side in this order from the shaft 2 side.
  • the index finger is put on the third finger-holding portion 56 and the middle finger is put on the finger-holding portion 55 .
  • a rotation operation is performed with the index finger, and the middle finger is supported in a direction parallel to the rotation axis J1.
  • the device is prevented from shaking during operation, and a more stable opening and closing operation is possible. That is, more precise and delicate treatment becomes possible.
  • it is possible to perform the procedure even in a sitting position, which enables an accurate procedure.
  • the medical instrument of the present invention has been described based on the illustrated embodiments, but the present invention is not limited to this, and the configuration of each part can be replaced with any configuration having similar functions. can do. Also, other optional components may be added. Further, the present invention may be a combination of any two or more configurations (features) of the above embodiments.
  • the force transmission section is configured by a link mechanism, but in the present invention, the force transmission section is not limited to this, and for example, has a configuration in which a wire is provided and the wire is used to pull. There may be.
  • the forceps are forceps that are used by being inserted into the body cavity of the living body, but in the present invention, the forceps are not limited to this, and are forceps that are used without being inserted into the body cavity of the living body. There may be.
  • the forceps are nasal forceps (forceps used for the nose), but in the present invention, the forceps are not limited to this, and may be forceps used for other parts.
  • Other sites include, for example, the abdominal cavity, urethra, bladder, vagina, intracranial, ear, eye, and the like.
  • the dimensions of the forceps for each application are not particularly limited, the following dimensions are preferable.
  • the length of the shaft is preferably 160 mm or more and 450 mm or less, more preferably 200 mm or more and 350 mm or less. Also, if the shaft has a circular cross-sectional shape, the diameter is preferably constant along its length.
  • the length of the shaft is preferably 100 mm or more and 170 mm or less, more preferably 120 mm or more and 160 mm or less.
  • the length of the shaft is preferably 45 mm or more and 90 mm or less, more preferably 50 mm or more and 85 mm or less.
  • the medical instrument is not limited to this. mentioned.
  • the shaft and the grip may be configured to be detachable.
  • a plurality of shafts different in at least one of length, thickness, and shape may be prepared, and these may be selectively attached and used according to the application.
  • the pair of jaw members included in the opening/closing portion may be detachably attached to the shaft.
  • a plurality of jaw members different in at least one of length, thickness, shape, and function may be prepared, and these may be selectively attached and used according to the application.
  • a medical instrument comprises an elongated shaft having a distal end portion and a proximal end portion, an opening/closing portion provided at the distal end portion of the shaft and capable of being opened and closed, and the proximal end of the shaft.
  • a gripping portion connected to a portion and including a first finger hooking portion for hooking a thumb and a second finger hooking portion for hooking at least one of a little finger and a ring finger;
  • An operating member provided to be rotatable about an extending rotating shaft is provided, and an operating portion that opens and closes the opening/closing portion by operating the operating member to rotate, and a torque applied to the operating member.
  • the operating member includes a third finger hook portion for hooking an index finger or a middle finger, and a finger other than the third finger hooked on the third finger hook portion among the index finger and the middle finger. and a finger rest portion for placing a finger on the finger rest portion, and the finger placed on the finger rest portion is supported in a direction parallel to the rotation shaft.

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  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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  • Heart & Thoracic Surgery (AREA)
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Abstract

Selon la présente invention, un instrument médical est caractérisé en ce qu'il a une tige oblongue qui a une partie d'extrémité et une partie de base, une partie d'ouverture/fermeture qui est disposée sur la partie d'extrémité de la tige et qui peut s'ouvrir et se fermer, une partie de préhension qui est reliée à la partie de base de la tige et comprend une première partie de crochet de doigt pour accrocher le pouce et une seconde partie de crochet de doigt pour accrocher au moins un parmi l'auriculaire et l'annulaire, une partie d'actionnement qui comprend un élément d'actionnement qui est disposé sur la partie de préhension de manière à pouvoir tourner autour d'un axe de rotation qui se prolonge dans une direction différente de la direction longitudinale de l'arbre et peut être actionné en rotation pour ouvrir et fermer la partie d'ouverture/fermeture, et une partie de transmission de force qui transmet un couple appliqué à l'élément d'actionnement à la partie d'ouverture/fermeture, l'élément d'actionnement comprenant une troisième partie de crochet de doigt pour accrocher l'index ou le majeur et une partie de support de doigt pour le support de l'index et du majeur qui n'est pas accroché au niveau de la troisième partie de crochet de doigt, le doigt reposant au niveau de la partie de support de doigt étant maintenu dans une direction qui est parallèle à l'axe de rotation.
PCT/JP2022/042146 2021-11-12 2022-11-11 Instrument médical WO2023085411A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2023540656A JPWO2023085411A1 (fr) 2021-11-12 2022-11-11
JP2023177520A JP7426639B2 (ja) 2021-11-12 2023-10-13 医療用器具

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Application Number Priority Date Filing Date Title
JP2021-185276 2021-11-12
JP2021185276 2021-11-12

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WO2023085411A1 true WO2023085411A1 (fr) 2023-05-19

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777538A (en) * 1972-03-15 1973-12-11 Weck & Co Edward Surgical clip applicator
WO2008030893A2 (fr) * 2006-09-05 2008-03-13 Cayenne Medical, Inc. Système et procédé d'arthroscopie pour la plicature de tissus mous
US20090088781A1 (en) * 2007-09-29 2009-04-02 Richard Wolf Gmbh Surgical suture instrument

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3777538A (en) * 1972-03-15 1973-12-11 Weck & Co Edward Surgical clip applicator
WO2008030893A2 (fr) * 2006-09-05 2008-03-13 Cayenne Medical, Inc. Système et procédé d'arthroscopie pour la plicature de tissus mous
US20090088781A1 (en) * 2007-09-29 2009-04-02 Richard Wolf Gmbh Surgical suture instrument

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JPWO2023085411A1 (fr) 2023-05-19
JP2023176016A (ja) 2023-12-12
JP7426639B2 (ja) 2024-02-02

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