WO2019131344A1 - Medical tweezers - Google Patents

Medical tweezers Download PDF

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Publication number
WO2019131344A1
WO2019131344A1 PCT/JP2018/046624 JP2018046624W WO2019131344A1 WO 2019131344 A1 WO2019131344 A1 WO 2019131344A1 JP 2018046624 W JP2018046624 W JP 2018046624W WO 2019131344 A1 WO2019131344 A1 WO 2019131344A1
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Prior art keywords
contact surface
medical forceps
arms
arm
recess
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PCT/JP2018/046624
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French (fr)
Japanese (ja)
Inventor
謙一 松村
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謙一 松村
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Publication of WO2019131344A1 publication Critical patent/WO2019131344A1/en

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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
    • A61B17/30—Surgical pincettes without pivotal connections

Definitions

  • the present invention relates to a medical forceps. More specifically, the present invention relates to a medical forceps used for grasping tissues such as organs and blood vessels during surgery and the like.
  • microsurgery performing advanced surgery performed under a surgical microscope is called microscopic surgery or microsurgery.
  • Such operations are performed in a wide range of fields such as neurosurgery, cardiac surgery, plastic surgery, orthopedic surgery, transplant surgery, etc., and are usually performed with precision surgery using a surgical microscope at magnifications of 3 to 20 times.
  • Hemostasis, microvascular anastomosis operation, etc. are performed.
  • Medical instruments for such operations include medical forceps (micro tweezers), needle holders, micro scissors (chopping blades), clip forceps (for opening and closing clips for blood vessels and cerebral aneurysms), bipolar Hemostatic hemostatic forceps etc.
  • Medical forceps are medical instruments for grasping tissues such as organs and blood vessels during surgery.
  • a pair of arms connected on the rear end side are generally provided opposite to each other, and the grips on the tip side of the arms approach each other and It is possible to separate.
  • medical forceps are required to be able to be securely gripped without damaging tissues such as organs and blood vessels, and various improvements have been made to date.
  • a medical forceps provided with a grasping portion in which a tip of an arm is formed in a rod shape is commercially available.
  • a product name "micro-ring forceps” and “micro-counterbalance ring forceps” manufactured by Medical Pine Co., Ltd. are known.
  • the rod-like grip portion has a substantially circular through hole at the center in order to maintain the gripping force.
  • the medical forceps are held in one hand
  • the needle holder is held in the other hand
  • the suture needle held by the tip of the needle holder is made to penetrate tissue.
  • An operation may be performed to receive the needle with a medical forceps.
  • the needle may penetrate the through hole of the grip or the needle may rotate. There is a problem that it is difficult to proceed with the operation safely, which causes an obstacle to tissue suturing.
  • the present invention has been made in view of the above circumstances, and can stably hold tissues such as organs and blood vessels, as well as safely and reliably hold, for example, a needle from a needle holder. It is an issue to provide a medical forceps that can
  • the medical forceps of the present invention in order to solve the above problems, A pair of long arms facing each other, A connecting portion connected at one end in the longitudinal direction of the arm; A pair of grips provided at the other longitudinal end of the arm and spaced apart from each other; Equipped with The arms can be approached and separated from each other with the connection portion side as a fulcrum, and a pair of the gripping portions approach and face each other as the arms approach each other, whereby an object is held between the gripping portions
  • the gripping portion includes an abutting surface portion capable of coming into contact with the other gripping portion by bringing the arms close to each other.
  • a concave portion recessed in a concave shape is formed near the center of the contact surface portion, and a groove connecting at least the outer edge portion of the contact surface portion and the concave portion is formed in the contact surface portion. It is characterized by
  • the groove includes one formed on a straight line crossing the recess.
  • tissues such as organs and blood vessels can be stably gripped, and the needle from the needle holder can be safely and reliably received.
  • FIG. 1 (A) is a perspective view illustrating an embodiment of a medical forceps of the present invention.
  • B is an enlarged perspective view of the tip portion of the medical forceps shown in FIG. 1 (A).
  • A) is the front view which showed the holding part of the front-end
  • tip part of the medical forceps shown in FIG. (B) is a D-D 'arrow directional cross-sectional view of the holding part shown to (A).
  • A) to (D) are front views illustrating another embodiment of the grip portion of the medical forceps of the present invention.
  • FIG. 1A is a perspective view illustrating an embodiment of the medical forceps of the present invention.
  • FIG. 1B is an enlarged perspective view of the tip of the medical forceps shown in FIG.
  • FIG. 2A is a front view showing the grip portion of the distal end portion of the medical forceps shown in FIG.
  • FIG. 2 (B) is a cross-sectional view taken along the line D-D 'of the grip shown in FIG. 2 (A).
  • the medical forceps 1 includes an arm 2, a connection portion 3, and a grip portion 4.
  • the pair of arms 2 can be approached and separated from each other, and the object can be gripped by the gripping unit 4 by causing the arms 2 to approach each other.
  • the subject of use of the medical forceps 1 is not particularly limited, and the medical forceps 1 can be used for various operations of mammals including humans.
  • the material which comprises each part of medical insulator 1 is not specifically limited, Materials, such as a titanium used conventionally, and a ceramic, can be used.
  • the arms 2 are long, and two form a pair.
  • the pair of arms 2 are disposed opposite to each other and substantially in parallel along the longitudinal direction.
  • the arm 2 is formed in a tapered shape whose width decreases as it extends from near the center in the longitudinal direction to the tip side.
  • Each arm 2 is formed with a handle portion 21 having a grid-like groove on the outer side near the center in the longitudinal direction (the side opposite to the side facing the other arm 2). Makes it easy to operate the arm 2 by holding the handle 21.
  • a cylindrical protrusion 22 is formed on the inner side surface (a surface facing the other arm 2) of one arm 2 on the tip end side of the arm 2, and the protrusion 22 is formed on the other arm 2
  • a fittable circular opening 23 is formed.
  • connection portions 3 are formed such that longitudinal ends of the arms 2 are connected to each other.
  • the connection portion 3 is formed by integrating the inner side surfaces (the opposite surfaces to the other arm 2) on the rear end side of the arm 2 with each other. As illustrated by the arrow Y in FIG. 1B, the arms 2 can be approached and separated from each other with the connection portion 3 side as a fulcrum.
  • the grips 4 are provided at the tip of the respective arms 2 in the longitudinal direction. As shown in FIGS. 1 (A) and (B) and FIGS. 2 (A) and (B), the gripping portion 4 is substantially cylindrical with a bottom surface portion 41, and the outer diameter of the gripping portion 4 is the tip of the arm 2. It is formed larger than the width of the neighborhood.
  • the grip 4 has an annular contact surface 5 on the inner side (the side facing the other grip 4), and near the center of the contact surface 5, the front surface is substantially circular.
  • a recessed portion 6 which is recessed in a concave shape is formed.
  • the surface of the contact surface portion 5 is formed flat, and by bringing the arms 2 close to each other, the contact surface portions 5 can be brought into contact with each other in a state in which the concave portions 6 of the grip portion 4 face each other.
  • the recess 6 has an inner circumferential surface 61 cut from the inner edge 51 of the annular contact surface 5 in a direction substantially perpendicular to the outer direction of the arm 2 (the direction away from the other grip 4) and the bottom end of the inner circumferential surface 61 And an inclined surface 62 extending obliquely from the center 61 a toward the center of the recess 6.
  • the central portion 62 a of the inclined surface 62 coincides with the center of the recess 6.
  • the contact surface 5 is formed with a groove 7 that communicates the outer edge 52 of the contact surface 5 with the central recess 6 (inner edge 51).
  • the groove 7 has the recess 6 in the horizontal direction on a straight line L1 substantially orthogonal to the longitudinal direction of the arm 2. It is formed across. That is, the groove 7 is not formed in the recess 6 but is formed only in the contact surface portion 5. Further, the bottom of the groove 7 is smoothly curved and formed, and the depth of the groove 7 is formed slightly shallower than the bottom end 61 a of the inner peripheral surface 61 of the recess 6.
  • the outer diameter, width, etc. of the contact surface portion 5 can be designed as appropriate. Specifically, for example, the outer diameter of the contact surface portion 5 is preferably 1.0 mm to 2.5 mm, and the width (the distance between the outer diameter and the inner diameter) is preferably in the range of 0.25 mm to 1.5 mm. it can.
  • the diameter, depth and the like of the recess 6 can be designed as appropriate. Specifically, for example, the diameter of the recess 6 is 0.5 mm to 2.0 mm, the depth to the bottom end 61 a of the inner peripheral surface 61 of the recess 6 is 0.25 mm to 1.5 mm, the inclined surface of the recess 6 The depth to the central portion 62a of 62 can be preferably exemplified in the range of 0.3 mm to 1.5 mm.
  • the width, depth, etc. of the groove 7 can be designed appropriately. Specifically, for example, a width of 0.2 mm to 0.4 mm and a depth of 0.2 mm to 0.4 mm can be preferably exemplified.
  • the medical forceps 1 can be operated such that the arms 2 approach each other by pressing the arms 2 inward with fingers.
  • the gripping portions 4 can grip tissue such as an organ or a blood vessel.
  • the elasticity of the arm 2 causes the tip end of the arm 2 to return to its original state of being separated (open state).
  • the medical forceps 1 is formed with a bottomed concave recess 6 in the vicinity of the center of the contact surface 5 of the grip 4, and when the tissue such as an organ or a blood vessel is gripped by the contact surface 5 of the grip 4 Since a part of the intrudes into the recess 6, the tissue can be stably gripped.
  • the medical forceps 1 is formed with the groove 7 communicating the outer edge portion 52 of the contact surface portion 5 with the concave portion 6, the tissue can be grasped more stably.
  • the medical forceps 1 is held in one hand, the needle holder is held in the other hand, the needle held by the tip of the needle holder is penetrated through the tissue, and the needle is In some cases, the medical forceps 1 perform an operation to receive. Also in such a case, in the medical forceps 1, the recess 6 formed in the contact surface 5 of the grip 4 has a bottom portion, so that the needle penetrates the through hole or the needle rotates as in the prior art. It is suppressed that it does, and safety is secured. Further, the groove 7 formed in the contact surface 5 of the medical forceps 1 also contributes to the stability when holding the needle.
  • FIGS. 3A to 3D are front views illustrating another embodiment of the grip 4 of the medical forceps according to the present invention.
  • the same reference numerals as in the embodiment illustrated in FIG. 1 and FIG. 2 denote the same parts, and a description thereof will be partially omitted.
  • grooves 7 are formed on two parallel straight lines L2 and L3 substantially orthogonal to the longitudinal direction of the arm 2 at the contact surface 5 of the grip 4 It is done.
  • the grooves 7 are each formed to horizontally cross the recess 6 of the grip 4 and communicate the outer edge 52 of the contact surface 5 with the center recess 6.
  • grooves 7 are formed on two straight lines L4 and L5 substantially orthogonal to each other at the center of the recess 6 in the contact surface 5 of the grip 4.
  • the grooves 7 are each formed to horizontally cross the recess 6 of the grip 4 and communicate the outer edge 52 of the contact surface 5 with the center recess 6.
  • grooves 7 are formed on five straight lines L6 to L10 substantially orthogonal to the longitudinal direction of the arm 2. Three grooves 7 (on the straight line L7 to L9) in the longitudinal direction of the arm 2 are formed horizontally across the recess 6 of the grip 4 and the outer edge 52 and the center of the contact surface 5 are formed. And the recess 6 of the On the other hand, the groove 7 on the foremost side (on the straight line L10) in the longitudinal direction of the arm 2 and the groove 7 on the near side (on the straight line L6) do not cross the recess 6 and are formed linearly without interruption. There is.
  • the medical forceps 1 of the present invention includes a form in which a plurality of such grooves 7 are combined.
  • the outer shape of the grip portion 4 is formed in a substantially regular octagonal shape in a front view.
  • the recess 6 formed in the contact surface 5 of the grip 4 is also formed in a substantially regular octagonal shape in a front view which is slightly smaller than the outer shape of the grip 4.
  • the groove 7 is formed on one straight line L ⁇ b> 11 substantially orthogonal to the longitudinal direction of the arm 2. The groove 7 is formed to horizontally cross the recess 6 and communicates the outer edge 52 of the contact surface 5 with the center recess 6.
  • the outer shape of the grip portion 4 and the shape of the concave portion 6 of the contact surface portion 5 are not particularly limited, and include those having a regular polygon shape in front view.
  • a recessed concave portion 6 with a bottom is formed in the vicinity of the center of the contact surface 5 of the grip 4.
  • a tissue such as an organ or a blood vessel is gripped by the interface portion 5
  • a part of the tissue intrudes into the recess 6, so that the tissue can be gripped stably.
  • the medical forceps 1 is formed with the groove 7 communicating the outer edge portion 52 of the contact surface portion 5 with the concave portion 6, the tissue can be grasped more stably.
  • the needle may fall off or the needle may rotate as in a conventional through hole. Are controlled, and safety is ensured. Further, the groove 7 formed in the contact surface 5 of the medical forceps 1 also contributes to the stability when holding the needle.
  • the medical forceps 1 according to the present invention is provided at a pair of long arms 2 facing each other, a connecting portion 3 connected at one end in the longitudinal direction of the arm 2, and the other end in the longitudinal direction of the arm 2 , And a pair of grips 4 separated from each other.
  • the arms 2 can be approached and separated from each other with the connection 3 side as a fulcrum, and the pair of grips 4 are brought close to each other as the arms 2 approach each other, so that an object is held between the grips 4 It can be gripped.
  • the gripping portion 4 includes an abutting surface portion 5 that can abut on the other gripping portion 4 by bringing the arms 2 close to each other.
  • a concave portion 6 recessed in a concave shape is formed in the vicinity of the center of the contact surface portion 5, and the contact surface portion 5 includes the outer edge portion 52 of the contact surface portion 5 at least on a straight line crossing the recess 6.
  • a groove 7 communicating with the recess 6 is formed.
  • the medical forceps of the present invention is not limited to the above embodiments.
  • the shapes, materials, dimensions and the like of the arm, the connection portion, the grip portion and the like can be appropriately designed.

Abstract

A grip part 4 is equipped with a contact surface 5 which can come into contact with another grip part 4 by bringing the arms 2 together. A recessed portion 6 which is recessed in a concave shape is formed in the approximate center of this contact surface 5, and a groove 7 connecting at least the outer peripheral portion 52 of the contact surface 5 with the recessed portion 6 is formed in the contact surface 5 to constitute medical tweezers 1.

Description

医療用鑷子Medical forceps
　本発明は、医療用鑷子に関する。より具体的には、本発明は、外科手術等の際に、臓器や血管などの組織を把持するために使用する医療用鑷子に関するものである。 The present invention relates to a medical forceps. More specifically, the present invention relates to a medical forceps used for grasping tissues such as organs and blood vessels during surgery and the like.
　従来より、手術用顕微鏡下において行われる高度な外科手術を行うことを顕微鏡下手術あるいは微小外科（マイクロサージャリー）などと呼ばれている。このような手術は、脳神経外科、心臓外科、形成外科、整形外科、移植外科などの広い領域において行われており、通常、倍率３倍から２０倍ほど手術用顕微鏡を用いて精密な剥離、切開、止血や微小血管吻合操作などが行われている。このような手術のための医療器具には、医療用鑷子（マイクロピンセット）、持針器、マイクロハサミ（剪刃）、クリップ鉗子（血管や脳動脈瘤用のクリップを開閉するもの）、双極性凝固止血鑷子などがある。 Conventionally, performing advanced surgery performed under a surgical microscope is called microscopic surgery or microsurgery. Such operations are performed in a wide range of fields such as neurosurgery, cardiac surgery, plastic surgery, orthopedic surgery, transplant surgery, etc., and are usually performed with precision surgery using a surgical microscope at magnifications of 3 to 20 times. , Hemostasis, microvascular anastomosis operation, etc. are performed. Medical instruments for such operations include medical forceps (micro tweezers), needle holders, micro scissors (chopping blades), clip forceps (for opening and closing clips for blood vessels and cerebral aneurysms), bipolar Hemostatic hemostatic forceps etc.
　医療用鑷子は、手術の際に臓器や血管などの組織を把持するための医療用器具である。例えば、特許文献１に記載されているように、医療用鑷子は、通常、後端側で接続する一対のアームが対向して設けられており、このアームの先端側の把持部が互いに接近および離間可能とされている。そして、このような医療用鑷子には、臓器や血管などの組織を傷つけることなく、確実に把持可能であることが求められており、これまでに様々な改良が進められている。 Medical forceps are medical instruments for grasping tissues such as organs and blood vessels during surgery. For example, as described in Patent Document 1, in the medical forceps, a pair of arms connected on the rear end side are generally provided opposite to each other, and the grips on the tip side of the arms approach each other and It is possible to separate. And such medical forceps are required to be able to be securely gripped without damaging tissues such as organs and blood vessels, and various improvements have been made to date.
　具体的には、例えば、脆弱な組織を把持するために、アームの先端を棍棒状に形成した把持部を備えた医療用鑷子が市販されている。具体的には、このような医療用鑷子として、例えば、株式会社メディカルパイン製・製品名「マイクロ・リング鑷子」、「マイクロ・カウンターバランス・リング鑷子」などが知られている。このような医療用鑷子においては、棍棒状の把持部は、把持力を維持するために中央に略円形の貫通孔を備えている。 Specifically, for example, in order to grasp fragile tissue, a medical forceps provided with a grasping portion in which a tip of an arm is formed in a rod shape is commercially available. Specifically, as such medical forceps, for example, a product name "micro-ring forceps" and "micro-counterbalance ring forceps" manufactured by Medical Pine Co., Ltd. are known. In such a medical forceps, the rod-like grip portion has a substantially circular through hole at the center in order to maintain the gripping force.
特開2012-90724号公報JP 2012-90724 A
　しかしながら、上記のような手術においては、例えば、一方の手に医療用鑷子を保持し、他方の手に持針器を保持し、持針器の先端で挟持した縫合針を組織に貫通させ、その針を医療用鑷子で受け取る操作が行われることがある。このような操作を行う場合、上記のような貫通孔が形成された把持部を備えた医療用鑷子で縫合針を受け取ろうとすると、把持部の貫通孔を貫通したり、針が回転したりしてしまう恐れがあり、安全に手術を進めることが難しく、組織縫合の支障となるという問題がある。 However, in the operation as described above, for example, the medical forceps are held in one hand, the needle holder is held in the other hand, and the suture needle held by the tip of the needle holder is made to penetrate tissue. An operation may be performed to receive the needle with a medical forceps. When performing such an operation, when it is attempted to receive a suture needle with a medical forceps provided with a grip having the above-mentioned through hole, the needle may penetrate the through hole of the grip or the needle may rotate. There is a problem that it is difficult to proceed with the operation safely, which causes an obstacle to tissue suturing.
　このため、実際の手術の現場では、開口部を備えていない医療用鑷子に一旦持ち替えてから持針器からの針を受け取ることが行われており、手術の効率性、安全性について改善の余地があると考えられた。
　本発明は、以上のような事情に鑑みてなされたものであり、臓器や血管などの組織を安定に把持することができるとともに、例えば持針器からの針を安全かつ確実に把持することができる医療用鑷子を提供することを課題としている。 For this reason, at the site of actual surgery, it is carried out to temporarily hold the forceps to a medical forceps not equipped with an opening, and then receive the needle from the needle holder. There is room for improvement in the efficiency and safety of surgery. Was considered to be.
The present invention has been made in view of the above circumstances, and can stably hold tissues such as organs and blood vessels, as well as safely and reliably hold, for example, a needle from a needle holder. It is an issue to provide a medical forceps that can
　本発明の医療用鑷子は、上記の課題を解決するため、
　互い対向する一対の長尺なアームと、
　前記アームの長手方向の一端同士で接続する接続部と、
　前記アームの長手方向の他端に設けられ、かつ、互いに離間する一対の把持部と、
を備え、
　前記アームは、前記接続部側を支点として互いに接近と離間が可能とされ、前記アーム同士の接近に伴って一対の前記把持部が互いに近接対峙することで、前記把持部の間に対象物を把持可能である医療用鑷子であって、
　前記把持部は、前記アーム同士を接近させることで他方の前記把持部と当接可能な当接面部を備え、
　この当接面部の中央付近には、凹状に窪む凹部が形成されているとともに、前記当接面部には、少なくとも前記当接面部の外縁部と前記凹部とを連通する溝が形成されていることを特徴としている。 The medical forceps of the present invention, in order to solve the above problems,
A pair of long arms facing each other,
A connecting portion connected at one end in the longitudinal direction of the arm;
A pair of grips provided at the other longitudinal end of the arm and spaced apart from each other;
Equipped with
The arms can be approached and separated from each other with the connection portion side as a fulcrum, and a pair of the gripping portions approach and face each other as the arms approach each other, whereby an object is held between the gripping portions A medical forceps that can be gripped,
The gripping portion includes an abutting surface portion capable of coming into contact with the other gripping portion by bringing the arms close to each other.
A concave portion recessed in a concave shape is formed near the center of the contact surface portion, and a groove connecting at least the outer edge portion of the contact surface portion and the concave portion is formed in the contact surface portion. It is characterized by
　この医療用鑷子では、前記溝は、前記凹部を横断する直線上に形成されているものを含むことが好ましい。 In this medical forceps, it is preferable that the groove includes one formed on a straight line crossing the recess.
　本発明の医療用鑷子によれば、臓器や血管などの組織を安定に把持することができるとともに、持針器からの針を安全かつ確実に受け取ることができる。 According to the medical forceps of the present invention, tissues such as organs and blood vessels can be stably gripped, and the needle from the needle holder can be safely and reliably received.
（Ａ）は、本発明の医療用鑷子の一実施形態を例示した斜視図である。（Ｂ）は、図１（Ａ）に示した医療用鑷子の先端部の拡大斜視図である。(A) is a perspective view illustrating an embodiment of a medical forceps of the present invention. (B) is an enlarged perspective view of the tip portion of the medical forceps shown in FIG. 1 (A). （Ａ）は、図１に示した医療用鑷子の先端部の把持部を示した正面図である。（Ｂ）は、（Ａ）に示した把持部のＤ－Ｄ’矢視断面図である。(A) is the front view which showed the holding part of the front-end | tip part of the medical forceps shown in FIG. (B) is a D-D 'arrow directional cross-sectional view of the holding part shown to (A). （Ａ）～（Ｄ）は、本発明の医療用鑷子の把持部の別の実施形態を例示した正面図である。(A) to (D) are front views illustrating another embodiment of the grip portion of the medical forceps of the present invention.
　本発明の医療用鑷子の一実施形態について図面とともに説明する。図１（Ａ）は、本発明の医療用鑷子の一実施形態を例示した斜視図である。図１（Ｂ）は、図１（Ａ）に示した医療用鑷子の先端部の拡大斜視図である。図２（Ａ）は、図１に示した医療用鑷子の先端部の把持部を示した正面図である。図２（Ｂ）は、図２（Ａ）に示した把持部のＤ－Ｄ’矢視断面図である。 One embodiment of a medical forceps of the present invention will be described with reference to the drawings. FIG. 1A is a perspective view illustrating an embodiment of the medical forceps of the present invention. FIG. 1B is an enlarged perspective view of the tip of the medical forceps shown in FIG. FIG. 2A is a front view showing the grip portion of the distal end portion of the medical forceps shown in FIG. FIG. 2 (B) is a cross-sectional view taken along the line D-D 'of the grip shown in FIG. 2 (A).
　図１（Ａ）に例示したように、医療用鑷子１は、アーム２と、接続部３と、把持部４とを備えている。医療用鑷子１は、一対のアーム２が互いに接近および離間可能とされ、アーム２同士を互いに接近させることで把持部４によって対象物を把持することができる。この医療用鑷子１の使用対象は特に限定されず、ヒトを含む哺乳動物などの各種手術に使用することができる。また、医療用鑷子１の各部を構成する材料は特に限定されず、従来使用されているチタン、セラミックなどの材料を使用することができる。 As illustrated in FIG. 1A, the medical forceps 1 includes an arm 2, a connection portion 3, and a grip portion 4. In the medical forceps 1, the pair of arms 2 can be approached and separated from each other, and the object can be gripped by the gripping unit 4 by causing the arms 2 to approach each other. The subject of use of the medical forceps 1 is not particularly limited, and the medical forceps 1 can be used for various operations of mammals including humans. Moreover, the material which comprises each part of medical insulator 1 is not specifically limited, Materials, such as a titanium used conventionally, and a ceramic, can be used.
　アーム２は長尺であり、２つで一対を構成している。一対のアーム２は互いに対向し、かつ長手方向に沿って略平行に配置されている。アーム２は、長手方向の中央付近から先端側に延びるにしたがって幅が狭くなる先細り形状に形成されている。 The arms 2 are long, and two form a pair. The pair of arms 2 are disposed opposite to each other and substantially in parallel along the longitudinal direction. The arm 2 is formed in a tapered shape whose width decreases as it extends from near the center in the longitudinal direction to the tip side.
　それぞれのアーム２は、長手方向の中央付近の外側面（他方のアーム２との対向面と反対側の面）に、格子状の溝を備えた持手部２１が形成されており、使用者が持手部２１を保持してアーム２を操作しやすくなっている。 Each arm 2 is formed with a handle portion 21 having a grid-like groove on the outer side near the center in the longitudinal direction (the side opposite to the side facing the other arm 2). Makes it easy to operate the arm 2 by holding the handle 21.
　また、アーム２の先端側には、一方のアーム２の内側面（他方のアーム２との対向面）に円柱状の突起部２２が形成されており、他方のアーム２には突起部２２を嵌合可能な円形の開口部２３が形成されている。アーム２同士を互いに接近させると、開口部２３に突起部２２が嵌合するため、アーム２同士が左右に位置ずれを起こすことが抑制され、把持部４によって安定に対象物を把持することができる。 Further, a cylindrical protrusion 22 is formed on the inner side surface (a surface facing the other arm 2) of one arm 2 on the tip end side of the arm 2, and the protrusion 22 is formed on the other arm 2 A fittable circular opening 23 is formed. When the arms 2 are made to approach each other, the projections 22 are fitted in the openings 23, so that the arms 2 are prevented from being displaced to the left and right, so that the object can be stably gripped by the grip 4 it can.
　接続部３は、アーム２同士の長手方向の一端が互いに接続されて形成されている。具体的には、接続部３はアーム２の後端側の内側面（他方のアーム２との対向面）同士が一体化することで形成されている。図１（Ｂ）中の矢印Ｙに例示したように、アーム２は、接続部３側を支点として互いに接近と離間が可能とされている。 The connection portions 3 are formed such that longitudinal ends of the arms 2 are connected to each other. Specifically, the connection portion 3 is formed by integrating the inner side surfaces (the opposite surfaces to the other arm 2) on the rear end side of the arm 2 with each other. As illustrated by the arrow Y in FIG. 1B, the arms 2 can be approached and separated from each other with the connection portion 3 side as a fulcrum.
　把持部４は、それぞれのアーム２の長手方向の先端に設けられている。図１（Ａ）（Ｂ）および図２（Ａ）（Ｂ）に示したように、把持部４は、底面部４１を有する略円筒状であり、把持部４の外径はアーム２の先端付近の幅よりも大きく形成されている。 The grips 4 are provided at the tip of the respective arms 2 in the longitudinal direction. As shown in FIGS. 1 (A) and (B) and FIGS. 2 (A) and (B), the gripping portion 4 is substantially cylindrical with a bottom surface portion 41, and the outer diameter of the gripping portion 4 is the tip of the arm 2. It is formed larger than the width of the neighborhood.
　具体的には、把持部４は、内側（他方の把持部４と対向する側）に、円環状の当接面部５を備え、この当接面部５の中央付近には、正面視略円形の凹状に窪む凹部６が形成されている。 Specifically, the grip 4 has an annular contact surface 5 on the inner side (the side facing the other grip 4), and near the center of the contact surface 5, the front surface is substantially circular. A recessed portion 6 which is recessed in a concave shape is formed.
　当接面部５の表面は平坦に形成されており、アーム２同士を接近させることで、把持部４の凹部６同士が対向した状態で、当接面部５同士を互いに当接させることができる。 The surface of the contact surface portion 5 is formed flat, and by bringing the arms 2 close to each other, the contact surface portions 5 can be brought into contact with each other in a state in which the concave portions 6 of the grip portion 4 face each other.
　凹部６は、円環状の当接面部５の内縁部５１からアーム２の外側方向（他方の把持部４から離れる方向）に略垂直に切り込む内周面部６１と、内周面部６１の底端部６１aから凹部６の中心側に向かって斜めに延びる傾斜面部６２とを備えている。傾斜面部６２の中央部６２aは凹部６の中心と一致している。 The recess 6 has an inner circumferential surface 61 cut from the inner edge 51 of the annular contact surface 5 in a direction substantially perpendicular to the outer direction of the arm 2 (the direction away from the other grip 4) and the bottom end of the inner circumferential surface 61 And an inclined surface 62 extending obliquely from the center 61 a toward the center of the recess 6. The central portion 62 a of the inclined surface 62 coincides with the center of the recess 6.
　さらに、当接面部５には、当接面部５の外縁部５２と中央の凹部６（内縁部５１）とを連通する溝７が形成されている。具体的には、図２（Ａ）（Ｂ）に示したように、溝７は、当接面部５において、アーム２の長手方向に対して略直交する直線Ｌ１上に、凹部６を水平方向に横断して形成されている。すなわち、溝７は、凹部６には形成されておらず、当接面部５にのみ形成されている。また、溝７の底部は滑らかに湾曲して形成されており、溝７の深さは、凹部６の内周面部６１の底端部６１aよりもやや浅く形成されている。 Further, the contact surface 5 is formed with a groove 7 that communicates the outer edge 52 of the contact surface 5 with the central recess 6 (inner edge 51). Specifically, as shown in FIGS. 2A and 2B, in the contact surface portion 5, the groove 7 has the recess 6 in the horizontal direction on a straight line L1 substantially orthogonal to the longitudinal direction of the arm 2. It is formed across. That is, the groove 7 is not formed in the recess 6 but is formed only in the contact surface portion 5. Further, the bottom of the groove 7 is smoothly curved and formed, and the depth of the groove 7 is formed slightly shallower than the bottom end 61 a of the inner peripheral surface 61 of the recess 6.
　当接面部５の外径、幅などは適宜設計することができる。具体的には、例えば、当接面部５の外径は１．０mm～２．５mm、幅（外径と内径の間の距離）は０．２５mm～１．５mmの範囲を好ましく例示することができる。 The outer diameter, width, etc. of the contact surface portion 5 can be designed as appropriate. Specifically, for example, the outer diameter of the contact surface portion 5 is preferably 1.0 mm to 2.5 mm, and the width (the distance between the outer diameter and the inner diameter) is preferably in the range of 0.25 mm to 1.5 mm. it can.
　また、凹部６の径、深さなども適宜設計することができる。具体的には、例えば、凹部６の径は０．５mm～２．０mm、凹部６の内周面部６１の底端部６１aまでの深さは０．２５mm～１．５mm、凹部６の傾斜面部６２の中央部６２aまでの深さは、０．３mm～１．５mmの範囲を好ましく例示することができる。 Further, the diameter, depth and the like of the recess 6 can be designed as appropriate. Specifically, for example, the diameter of the recess 6 is 0.5 mm to 2.0 mm, the depth to the bottom end 61 a of the inner peripheral surface 61 of the recess 6 is 0.25 mm to 1.5 mm, the inclined surface of the recess 6 The depth to the central portion 62a of 62 can be preferably exemplified in the range of 0.3 mm to 1.5 mm.
　さらに、溝７の幅、深さなども適宜設計することができる。具体的には、例えば、溝７の幅は０．２mm～０．４mm、深さは０．２mm～０．４mmの範囲を好ましく例示することができる。 Furthermore, the width, depth, etc. of the groove 7 can be designed appropriately. Specifically, for example, a width of 0.2 mm to 0.4 mm and a depth of 0.2 mm to 0.4 mm can be preferably exemplified.
　医療用鑷子１は、アーム２を手指で内側に向かって押圧することでアーム２同士が互いに接近するように操作することができる。アーム２同士の接近に伴って一対の把持部４が互いに近接対峙することで（閉鎖状態）、把持部４によって臓器や血管などの組織を把持することができる。また、手指によるアーム２の押圧を解放すると、アーム２の弾性によってアーム２の先端側が離間している元の状態に復帰する（開放状態）。 The medical forceps 1 can be operated such that the arms 2 approach each other by pressing the arms 2 inward with fingers. As the pair of gripping portions 4 approach each other as the arms 2 approach each other (close state), the gripping portions 4 can grip tissue such as an organ or a blood vessel. Further, when the pressing of the arm 2 by the finger is released, the elasticity of the arm 2 causes the tip end of the arm 2 to return to its original state of being separated (open state).
　医療用鑷子１は、把持部４の当接面部５の中央付近に有底凹状の凹部６が形成されており、把持部４の当接面部５で臓器や血管などの組織を把持すると、組織の一部が凹部６内に侵入するため、安定して組織を把持することができる。 The medical forceps 1 is formed with a bottomed concave recess 6 in the vicinity of the center of the contact surface 5 of the grip 4, and when the tissue such as an organ or a blood vessel is gripped by the contact surface 5 of the grip 4 Since a part of the intrudes into the recess 6, the tissue can be stably gripped.
　また、医療用鑷子１は、当接面部５の外縁部５２と凹部６とを連通する溝７が形成されているため、さらに安定して組織を把持することができる。 Further, since the medical forceps 1 is formed with the groove 7 communicating the outer edge portion 52 of the contact surface portion 5 with the concave portion 6, the tissue can be grasped more stably.
　さらに、手術の現場では、例えば、一方の手に医療用鑷子１を保持し、他方の手に持針器を保持し、持針器の先端で挟持した針を組織に貫通させ、その針を医療用鑷子１で受け取る操作を行う場合がある。このような場合も、医療用鑷子１は、把持部４の当接面部５に形成された凹部６は底部を有するため、従来のように針が貫通孔を貫通したり、針が回転したりしてしまうことが抑制されており、安全性が確保されている。また、医療用鑷子１の当接面部５に形成された溝７は、針を保持する際の安定性にも寄与している。 Furthermore, in the field of surgery, for example, the medical forceps 1 is held in one hand, the needle holder is held in the other hand, the needle held by the tip of the needle holder is penetrated through the tissue, and the needle is In some cases, the medical forceps 1 perform an operation to receive. Also in such a case, in the medical forceps 1, the recess 6 formed in the contact surface 5 of the grip 4 has a bottom portion, so that the needle penetrates the through hole or the needle rotates as in the prior art. It is suppressed that it does, and safety is secured. Further, the groove 7 formed in the contact surface 5 of the medical forceps 1 also contributes to the stability when holding the needle.
　また、図１および図２に例示した医療用鑷子１について、その把持力を確認する実験を行ったところ、およそ２００ｇの錘が入った袋を脱落させることなく把持することができることが確認されている。 In the medical forceps 1 illustrated in FIGS. 1 and 2, when the experiment for confirming the gripping force was conducted, it was confirmed that the bag containing the weight of about 200 g can be gripped without falling off There is.
　本発明の医療用鑷子の別の実施形態について図面とともに説明する。図３（Ａ）～（Ｄ）は、本発明の医療用鑷子の把持部４の別の実施形態を例示した正面図である。図１、図２で例示した実施形態と共通する部分には同一の符号を付し、以下では説明を一部省略する。 Another embodiment of the medical forceps of the present invention will be described with reference to the drawings. FIGS. 3A to 3D are front views illustrating another embodiment of the grip 4 of the medical forceps according to the present invention. The same reference numerals as in the embodiment illustrated in FIG. 1 and FIG. 2 denote the same parts, and a description thereof will be partially omitted.
　図３（Ａ）に示した医療用鑷子１は、把持部４の当接面部５において、アーム２の長手方向に対して略直交する２本の平行な直線Ｌ２，Ｌ３上に溝７が形成されている。溝７はいずれも、把持部４の凹部６を水平方向に横断して形成されており、当接面部５の外縁部５２と中央の凹部６とを連通している。 In the medical forceps 1 shown in FIG. 3A, grooves 7 are formed on two parallel straight lines L2 and L3 substantially orthogonal to the longitudinal direction of the arm 2 at the contact surface 5 of the grip 4 It is done. The grooves 7 are each formed to horizontally cross the recess 6 of the grip 4 and communicate the outer edge 52 of the contact surface 5 with the center recess 6.
　図３（Ｂ）に示した医療用鑷子１は、把持部４の当接面部５において、互いに凹部６の中央で略直交する２本の直線Ｌ４，Ｌ５上に溝７が形成されている。溝７はいずれも、把持部４の凹部６を水平方向に横断して形成されており、当接面部５の外縁部５２と中央の凹部６とを連通している。 In the medical forceps 1 shown in FIG. 3B, grooves 7 are formed on two straight lines L4 and L5 substantially orthogonal to each other at the center of the recess 6 in the contact surface 5 of the grip 4. The grooves 7 are each formed to horizontally cross the recess 6 of the grip 4 and communicate the outer edge 52 of the contact surface 5 with the center recess 6.
　図３（Ｃ）に示した医療用鑷子１は、アーム２の長手方向に対して略直交する５本の直線Ｌ６～Ｌ１０上に溝７が形成されている。アーム２の長手方向の中央の３つ（直線Ｌ７～９上）の溝７は、把持部４の凹部６を水平方向に横断して形成されており、当接面部５の外縁部５２と中央の凹部６とを連通している。一方、アーム２の長手方向の最先端側（直線Ｌ１０上）の溝７と手前側（直線Ｌ６上）の溝７は、凹部６を横断しておらず、途切れることなく直線状に形成されている。本発明の医療用鑷子１には、このような溝７が複数組み合わせられている形態も含まれる。 In the medical forceps 1 shown in FIG. 3C, grooves 7 are formed on five straight lines L6 to L10 substantially orthogonal to the longitudinal direction of the arm 2. Three grooves 7 (on the straight line L7 to L9) in the longitudinal direction of the arm 2 are formed horizontally across the recess 6 of the grip 4 and the outer edge 52 and the center of the contact surface 5 are formed. And the recess 6 of the On the other hand, the groove 7 on the foremost side (on the straight line L10) in the longitudinal direction of the arm 2 and the groove 7 on the near side (on the straight line L6) do not cross the recess 6 and are formed linearly without interruption. There is. The medical forceps 1 of the present invention includes a form in which a plurality of such grooves 7 are combined.
　図３（Ｄ）に示した医療用鑷子１は、把持部４の外形が、正面視略正八角形状に形成されている。また把持部４の当接面部５に形成された凹部６も把持部４の外形よりも一回り小さい正面視略正八角形状に形成されている。そして、この医療用鑷子１では、アーム２の長手方向に対して略直交する１本の直線Ｌ１１上に溝７が形成されている。溝７は、凹部６を水平方向に横断して形成されており、当接面部５の外縁部５２と中央の凹部６とを連通している。本発明の医療用鑷子１は、把持部４の外形や当接面部５の凹部６の形状は特に限定されず、正面視正多角形状のものも含まれる。 In the medical forceps 1 shown in FIG. 3D, the outer shape of the grip portion 4 is formed in a substantially regular octagonal shape in a front view. Further, the recess 6 formed in the contact surface 5 of the grip 4 is also formed in a substantially regular octagonal shape in a front view which is slightly smaller than the outer shape of the grip 4. In the medical forceps 1, the groove 7 is formed on one straight line L <b> 11 substantially orthogonal to the longitudinal direction of the arm 2. The groove 7 is formed to horizontally cross the recess 6 and communicates the outer edge 52 of the contact surface 5 with the center recess 6. In the medical forceps 1 of the present invention, the outer shape of the grip portion 4 and the shape of the concave portion 6 of the contact surface portion 5 are not particularly limited, and include those having a regular polygon shape in front view.
　図３（Ａ）～（Ｄ）に例示した形態の医療用鑷子１においても、把持部４の当接面部５の中央付近に有底凹状の凹部６が形成されており、把持部４の当接面部５で臓器や血管などの組織を把持すると、組織の一部が凹部６内に侵入するため、安定して組織を把持することができる。また、医療用鑷子１は、当接面部５の外縁部５２と凹部６とを連通する溝７が形成されているため、さらに安定して組織を把持することができる。さらに、医療用鑷子１は、把持部４の当接面部５に形成された凹部６は底部を有するため、従来の貫通孔のように針が脱落したり、針が回転したりしてしまうことが抑制されており、安全性が確保されている。また、医療用鑷子１の当接面部５に形成された溝７は、針を保持する際の安定性にも寄与している。 Also in the medical forceps 1 of the embodiment illustrated in FIGS. 3A to 3D, a recessed concave portion 6 with a bottom is formed in the vicinity of the center of the contact surface 5 of the grip 4. When a tissue such as an organ or a blood vessel is gripped by the interface portion 5, a part of the tissue intrudes into the recess 6, so that the tissue can be gripped stably. Further, since the medical forceps 1 is formed with the groove 7 communicating the outer edge portion 52 of the contact surface portion 5 with the concave portion 6, the tissue can be grasped more stably. Furthermore, in the medical forceps 1, since the recess 6 formed in the contact surface 5 of the grip 4 has a bottom, the needle may fall off or the needle may rotate as in a conventional through hole. Are controlled, and safety is ensured. Further, the groove 7 formed in the contact surface 5 of the medical forceps 1 also contributes to the stability when holding the needle.
　本発明の医療用鑷子１は、互い対向する一対の長尺なアーム２と、アーム２の長手方向の一端同士で接続する接続部３と、アーム２の長手方向の他端に設けられ、かつ、互いに離間する一対の把持部４と、を備えている。 The medical forceps 1 according to the present invention is provided at a pair of long arms 2 facing each other, a connecting portion 3 connected at one end in the longitudinal direction of the arm 2, and the other end in the longitudinal direction of the arm 2 , And a pair of grips 4 separated from each other.
　アーム２は、接続部３側を支点として互いに接近と離間が可能とされ、アーム２同士の接近に伴って一対の把持部４が互いに近接対峙することで、把持部４の間に対象物を把持可能である。 The arms 2 can be approached and separated from each other with the connection 3 side as a fulcrum, and the pair of grips 4 are brought close to each other as the arms 2 approach each other, so that an object is held between the grips 4 It can be gripped.
　把持部４は、アーム２同士を接近させることで他方の把持部４と当接可能な当接面部５を備えている。この当接面部５の中央付近には、凹状に窪む凹部６が形成されているとともに、当接面部５には、少なくとも凹部６を横断する直線上に、当接面部５の外縁部５２と凹部６とを連通する溝７が形成されている。 The gripping portion 4 includes an abutting surface portion 5 that can abut on the other gripping portion 4 by bringing the arms 2 close to each other. A concave portion 6 recessed in a concave shape is formed in the vicinity of the center of the contact surface portion 5, and the contact surface portion 5 includes the outer edge portion 52 of the contact surface portion 5 at least on a straight line crossing the recess 6. A groove 7 communicating with the recess 6 is formed.
　本発明の医療用鑷子は、以上の実施形態に限定されることはない。例えば、アーム、接続部、把持部などの形状、材料、寸法などは適宜設計することができる。 The medical forceps of the present invention is not limited to the above embodiments. For example, the shapes, materials, dimensions and the like of the arm, the connection portion, the grip portion and the like can be appropriately designed.
１　　医療用鑷子
２　　アーム
３　　接続部
４　　把持部
５　　当接面部
５２　外縁部
６　　凹部
７　　溝 DESCRIPTION OF SYMBOLS 1 Medical forceps 2 Arm 3 Connection part 4 Grip part 5 Contact surface part 52 Outer edge 6 Recess 7 Groove

Claims (2)

  1. 　互い対向する一対の長尺なアームと、
    　前記アームの長手方向の一端同士で接続する接続部と、
    　前記アームの長手方向の他端に設けられ、かつ、互いに離間する一対の把持部と、
    を備え、
    　前記アームは、前記接続部側を支点として互いに接近と離間が可能とされ、前記アーム同士の接近に伴って一対の前記把持部が互いに近接対峙することで、前記把持部の間に対象物を把持可能である医療用鑷子であって、
    　前記把持部は、前記アーム同士を接近させることで他方の前記把持部と当接可能な当接面部を備え、
    　この当接面部の中央付近には、凹状に窪む凹部が形成されているとともに、前記当接面部には、少なくとも前記当接面部の外縁部と前記凹部とを連通する溝が形成されていることを特徴とする医療用鑷子。     A pair of long arms facing each other,
    A connecting portion connected at one end in the longitudinal direction of the arm;
    A pair of grips provided at the other longitudinal end of the arm and spaced apart from each other;
    Equipped with
    The arms can be approached and separated from each other with the connection portion side as a fulcrum, and a pair of the gripping portions approach and face each other as the arms approach each other, whereby an object is held between the gripping portions A medical forceps that can be gripped,
    The gripping portion includes an abutting surface portion capable of coming into contact with the other gripping portion by bringing the arms close to each other.
    A concave portion recessed in a concave shape is formed near the center of the contact surface portion, and a groove connecting at least the outer edge portion of the contact surface portion and the concave portion is formed in the contact surface portion. Medical forceps characterized by
  2. 　前記溝は、前記凹部を横断する直線上に形成されているものを含むことを特徴とする請求項１の医療用鑷子。 The medical forceps according to claim 1, wherein the groove includes one formed on a straight line crossing the recess.
PCT/JP2018/046624 2017-12-25 2018-12-18 Medical tweezers WO2019131344A1 (en)

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JPH0833649A (en) * 1994-07-25 1996-02-06 Takayuki Ishizawa Dental pincette
US5514148A (en) * 1994-11-04 1996-05-07 Smith, Iii; Ray C. Surgical clamp and method of use
JP2001170069A (en) * 1999-12-17 2001-06-26 Olympus Optical Co Ltd Medical treatment instrument
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WO2005074817A1 (en) * 2004-02-09 2005-08-18 Avastra Ltd Instruments for sutureless surgical technique
WO2006062049A1 (en) * 2004-12-07 2006-06-15 Isao Otaka Pincers
JP2006521154A (en) * 2003-03-25 2006-09-21 剛 渡邊 Vascular surgical holder
JP2008142496A (en) * 2006-12-08 2008-06-26 Masahiko Wako Surgical tweezers for use in vascular anastomosis with vascular anastomosis ring
JP2015198741A (en) * 2014-04-07 2015-11-12 泉工医科工業株式会社 Gripping member, gripper, and needle holder
US20160331391A1 (en) * 2016-06-07 2016-11-17 Muhammad Farooq Cartilage holding forceps

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Publication number Priority date Publication date Assignee Title
JPS5321896U (en) * 1976-07-31 1978-02-23
JPH01170209U (en) * 1988-05-21 1989-12-01
JPH0833649A (en) * 1994-07-25 1996-02-06 Takayuki Ishizawa Dental pincette
US5514148A (en) * 1994-11-04 1996-05-07 Smith, Iii; Ray C. Surgical clamp and method of use
JP2001170069A (en) * 1999-12-17 2001-06-26 Olympus Optical Co Ltd Medical treatment instrument
JP2003102768A (en) * 2001-08-23 2003-04-08 Alcon Grieshaber Ag Micro surgical instrument for ophthalmology
JP2006521154A (en) * 2003-03-25 2006-09-21 剛 渡邊 Vascular surgical holder
WO2005074817A1 (en) * 2004-02-09 2005-08-18 Avastra Ltd Instruments for sutureless surgical technique
WO2006062049A1 (en) * 2004-12-07 2006-06-15 Isao Otaka Pincers
JP2008142496A (en) * 2006-12-08 2008-06-26 Masahiko Wako Surgical tweezers for use in vascular anastomosis with vascular anastomosis ring
JP2015198741A (en) * 2014-04-07 2015-11-12 泉工医科工業株式会社 Gripping member, gripper, and needle holder
US20160331391A1 (en) * 2016-06-07 2016-11-17 Muhammad Farooq Cartilage holding forceps

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