JP2010207260A - Forceps - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a forceps which prevents an operator from coming into contact with the exposed part of an internal shaft and receiving an electric shock, and allows the inside of a handle part to be washed with washing liquid for reuse of the forceps. <P>SOLUTION: In the forceps 1, since a power connection terminal 50 is extended from a fixed handle 20 to the upper position of the exposed part 96 of the internal shaft 56 in order to prevent contact from the outside to the exposed part 96 by a connector 51 for power supply when the connector 51 is connected to the power connection terminal 50, the operator is prevented from coming into contact with the exposed part 96 of the internal shaft 56 and receiving an electric shock when making a current flow from the power connection terminal 50. Also, since a part of the internal shaft 56 is exposed between the fixed handle 20 and a joint holder 92 in a state in which the connector 51 for the power supply is not connected to the power connection terminal 50, the inside of the handle part 14 can be washed with the washing liquid for reuse of the forceps. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a forceps used for endoscopy or endoscopic surgery.

  Conventionally, for example, in an endoscopic operation, forceps for performing operations such as grasping, peeling, and excision of a tissue instead of a surgeon's hand have been used.

  In general, as a forceps, as shown in FIG. 5, the shaft portion 100, a front end operating portion provided at the front end portion of the shaft portion 100, the rear of the shaft portion 100 can be held, and the front end operating portion can be operated. A handle portion 102 extending downward from the portion 100 by a predetermined distance, and a power connection terminal 104 provided on the handle portion 102 and electrically connected to the front end operating portion via the shaft portion 100 are provided. The shaft portion 100 includes an outer cylinder 106 having an insulating portion on the outer peripheral surface, and an inner shaft 108 that is movable in the front-rear direction within the outer cylinder 100 and has conductivity. The handle unit 100 includes a fixed handle 110 and a movable handle 112 that swings in a direction toward or away from the fixed handle 110. The movable handle 112 is a shaft 114 serving as a fulcrum for swinging, an operation unit 116 provided below the shaft 114 and operated by an operator, and provided above the shaft 114 and moving the internal shaft 108 in the front-rear direction. One having a lever portion 118 to be operated is known (see Patent Document 1).

  In this type of forceps, when the movable handle 112 is swung, the lever portion 118 moves in the front-rear direction with respect to the fixed handle 110, so the lever portion 118 moves between the fixed handle 110 and the lever portion 118. Only a working area is required. Further, since the internal shaft 108 is connected to the lever portion 118, when the lever portion 118 is retracted with respect to the fixed handle 110, the conductive internal shaft 108 is exposed in the operation region. When using forceps, an electric current may be supplied to the internal shaft 108. Therefore, it is necessary to prevent the internal shaft 108 from being exposed to the outside in order to prevent an electric shock of an operator or the like.

  Therefore, in the forceps described in Patent Document 1, as shown in FIG. 5, the cover portion 120 that covers the operating area of the lever portion is provided on the fixed handle, and the lever portion moves to a position retracted from the fixed handle. However, the inner shaft is not exposed to the outside.

Japanese Patent No. 2573781

  By the way, the forceps described in Patent Document 1 is a so-called disposable type designed on the premise of being disposable, but in recent years, the reduction of waste has been an issue in the medical industry. Also, a reusable forceps that can be reused is desired.

  Since the forceps described in Patent Document 1 is a disposable type and does not require cleaning, the cover portion 120 can prevent the internal shaft from being exposed to the outside. However, the reuse type forceps require cleaning, and in particular, it is necessary to clean the mounting portion of the shaft portion of the fixed handle and the movable portion of the movable handle, and therefore it is necessary to expose the operating region of the lever portion to the outside. . For this reason, in the conventional reuse-type forceps, it is necessary for the operator to perform the operation while taking care not to touch the exposed internal shaft.

  In order to solve the above-described problems, the present invention prevents an operator from receiving an electric shock by contacting an exposed portion of an internal shaft, and can clean the inside of the handle portion with a cleaning liquid for reuse. The purpose is to provide.

  The forceps according to the present invention can hold the shaft portion, a front end working portion provided at the front end portion of the shaft portion, the rear of the shaft portion, and operate the front end working portion, and can be operated downward from the shaft portion. A forceps provided with a handle portion extending a predetermined distance and a power connection terminal provided on the handle portion and electrically connected to the front end operation portion via the shaft portion, wherein the shaft portion is An outer cylinder provided with an insulating portion on an outer peripheral surface; and an inner shaft that is movable in the front-rear direction within the outer cylinder and has conductivity, and the handle portion is fixed to the fixed handle and the fixed handle. A movable handle that swings in a direction of approaching or separating, the movable handle being a shaft portion that is a fulcrum of swinging, an operation portion that is provided below the shaft portion and is operated by an operator, Above the shaft A lever portion that is detachably attached to a rear end portion of the inner shaft and moves the inner shaft in the front-rear direction, and a part of the inner shaft is exposed between the fixed handle and the lever portion. In the forceps, the power connection terminal is connected to the internal portion from the fixed handle so that when the power supply connector is connected to the power supply connection terminal, the connector can prevent external contact with the exposed portion. It is characterized by extending toward the upper position of the exposed portion of the shaft.

  According to the present invention, when the power supply connection terminal is connected to the power supply connection terminal, the exposed portion of the inner shaft is fixed to the exposed portion of the inner shaft so that the connector can prevent external contact with the exposed portion. Therefore, the surgeon can be prevented from coming into contact with the exposed portion of the internal shaft when receiving a current from the power connection terminal. In addition, since a part of the inner shaft is exposed between the fixed handle and the lever part when the power supply connector is not connected to the power connection terminal, the inside of the handle part is washed with liquid to reuse the forceps. Can be washed with.

  In addition, since it is possible to prevent an electric shock from coming into contact with the exposed portion of the internal shaft, it is possible to omit an insulating process of the exposed portion where a part of the internal shaft is exposed between the fixed handle and the lever portion.

  In the present invention, the power connection terminal extends obliquely rearward from the fixed handle so that a connection portion between the rear end portion of the inner shaft and the lever portion can be visually observed in a state where the connector is not connected. It is preferable to be provided.

  According to this preferable form, since the connection part of the rear-end part of an internal shaft and a lever part can be visually observed, it can be confirmed whether the internal shaft which can be attached or detached to a lever part is correctly attached to the lever part. .

  Further, in the present invention, the fixed handle has a side plate that covers a side of the exposed portion of the internal shaft and covers the periphery of the shaft portion of the movable handle, and within the operation region surrounded by the side plate, The lever portion of the movable handle is moved, and the operating region communicates with a first opening opened between the fixed portion to which the power connection terminal is fixed and the lever portion of the movable handle, It is preferable to communicate with a second opening that opens toward the movable handle below the shaft portion, and further communicate with a through-hole that opens to the front of the fixed handle.

  According to this preferred embodiment, the operating region communicates with the first opening that opens between the fixed portion to which the power connection terminal is fixed and the lever portion of the movable handle, and is movable below the shaft portion of the movable handle. Since it communicates with the second opening that opens toward the handle side, and further communicates with the through-hole that opens to the front of the fixed handle, the cleaning liquid blown from the first opening is used to clean the handle portion. Since the inside of the part is cleaned and blown out from the second opening and the through hole, the cleaning liquid can be prevented from accumulating inside the handle part.

It is a side view showing an example of forceps concerning the present invention. It is a figure which shows the state which decomposed | disassembled the forceps of embodiment. It is a figure which shows the operation state of a front-end action | operation part. It is a figure which shows the internal structure of a handle part. It is a figure which shows the inside of the handle part in the conventional forceps.

  FIG. 1 is a side view showing an example of a forceps according to the present invention. The forceps 1 holds the shaft portion 10 to be inserted into the body, the front end operation portion 12 at the front end portion of the shaft portion 10, and the rear of the shaft portion 10 and can operate the front end operation portion 12. It is comprised from the handle | steering-wheel part 14 extended below predetermined distance from.

  The shaft portion 10 and the handle portion 14 are configured to be disassembled, and can be reused by cleaning the inside of the shaft portion 10 and the handle portion 14.

  At the rear end portion of the shaft portion 10, there is a dial 16 fixed to the shaft portion 10. A dial 18 that is rotatably attached to the handle portion 14 is provided at the front end portion of the handle portion 14. The dial 16 and the dial 18 are screwed together and are configured to rotate integrally. Therefore, the shaft 10 is rotated by rotating the dial 16 or the dial 18.

  The handle portion 14 includes a fixed handle 20 and a movable handle 22. The fixed handle 20 extends rearward from the front end by a predetermined distance and extends downward by a predetermined distance. The fixed handle 20 includes a first fixed handle case 24 on the front surface side and a second fixed handle case 26 on the rear surface side.

  The movable handle 22 is provided between the first fixed handle case 24 and the second handle case 26 of the fixed handle 20 and is pivotally supported by the shaft portion 28 so as to be close to or away from the fixed handle 20. ing. The movable handle 22 includes a first movable handle case 30 on the front surface side and a second movable handle case 32 on the rear surface side.

  Below the shaft portion 28 of the fixed handle 20, an operation portion 20a for an operator to put his / her finger is formed. Similarly, an operation portion 22a for an operator to put a finger is formed below the shaft portion 28 of the movable handle 22.

  The upper end of the fixed handle 20 is provided with a power connection terminal 50 that is electrically connected to the front end operation unit 12 via the shaft portion 10 at an angle from the upper end of the fixed handle 20 to above the movable handle 22. It has been.

  The handle portion 14 is provided with movement restricting means 34 that prohibits swinging in the direction in which the movable handle 22 is separated from the fixed handle 20.

  At the base end of the portion extending downward from the fixed handle 20, a switching wheel that can switch between operation and release of the movement restricting means 34 that prohibits swinging in the direction in which the movable handle 22 is separated from the fixed handle 20. 36 is provided.

  Between the fixed handle 20 and the movable handle 22, a movable handle ratchet 42 fixed to the movable handle 22 and extending a predetermined distance toward the fixed handle 20, and an upper position of the movable handle ratchet 42 supported by the fixed handle 20. A fixed handle ratchet 48 formed so as to mesh with a movable handle ratchet 42 extending a predetermined distance on the movable handle 22 side is provided.

  Drawing 2 is a figure showing the state where the forceps of an embodiment was disassembled. The forceps 1 can be disassembled into the inner 52 and outer (outer cylinder) 54 of the shaft portion 10 and the handle portion 14.

  The inner 52 includes an inner shaft 56 formed in an elongated cylindrical shape and the front end actuating portion 12. Examples of the material of the inner shaft 56 and the front end working unit 12 include stainless steel.

  The outer 54 includes an outer pipe 58 formed in an elongated cylindrical shape having an inner diameter larger than the inner shaft 56 of the inner 52, and a dial 16 provided at the rear portion of the outer pipe 58. The outer surface of the outer 54 is covered with an insulating material. Examples of the material of the outer pipe 58 include stainless steel.

  In a state where the shaft portion 10 is assembled, the inner shaft 56 of the inner 52 and the outer pipe 58 of the outer 54 are configured so that the inner shaft 56 cannot rotate in the outer pipe 58 with respect to the outer pipe 58 and is movable in the front-rear direction. Is formed.

  FIG. 3 is a diagram illustrating an operating state of the front end operating unit. The front end actuating part 12 has a link mechanism 60 and a pair of jaw parts 62 connected to the link mechanism 60. The pair of jaw portions 62 are rotatably supported by the shaft portion 64 at the front end portion of the outer pipe 58 of the outer 54. The link mechanism 60 is connected to the front end of the inner shaft 56 of the inner 52, and the link mechanism 60 is reciprocated in the front-rear direction (for example, length L) within the shaft portion 10. By operating, the pair of jaws 62 opens and closes. When the inner shaft 56 moves in the direction of the rear end, the pair of jaws 62 closes, and when the inner shaft 56 moves in the direction of the front end, the pair of jaws 62 opens.

  FIG. 4 is a diagram showing an internal structure of the handle portion. A connection portion 94 between the internal shaft 56 of the shaft portion 10 and the movable handle 22 is housed inside the handle portion 14 below the power supply connection terminal 50.

  A shaft holder 88 formed in a cylindrical shape that holds the rear portion of the shaft portion 10 is provided at the front end portion of the fixed handle 20 into which the shaft portion 10 is inserted. A spherical body 90 formed in a spherical shape is formed at the rear end portion of the internal shaft 56. The spherical body 90 is detachably supported by a joint holder (lever portion) 92 provided above the shaft portion 28 of the movable handle 22 and formed in a cylindrical shape. When the movable handle 22 is rotated with respect to the fixed handle 20, the spherical body 90 is supported by the joint holder 92, the inner shaft 56 of the shaft portion 10 moves back and forth, and the front end actuating portion 12 is actuated.

  Between the fixed handle 20 and the joint holder 92, an exposed portion 96 is formed in which a part of the inner shaft 56 is exposed to the outside.

  The power supply connection terminal 50 exposes the internal shaft 56 from the fixed handle 20 so that the connector 51 can prevent external contact with the exposed portion 96 when the power supply connector 51 is connected to the power supply connection terminal 50. It extends toward the upper position of the part 96.

  Further, the power connection terminal 50 has a fixed handle 20 so that a connection portion 94 between the spherical body 90 formed at the rear end portion of the internal shaft 56 and the joint holder 92 can be visually observed in a state where the connector 51 is not connected. Is extended diagonally backward.

  The first fixed handle case (side plate) 24 and the second fixed handle case (side plate) 26 of the fixed handle 20 cover the side of the exposed portion 96 of the internal shaft 56 and the periphery of the shaft portion 28 of the movable handle 22. Thus, the joint holder 92 of the movable handle 22 is moved in the operation region 98 surrounded by the first fixed handle case 24 and the second fixed handle case 26.

  The operation region 98 communicates with the first opening 14 a that opens between the fixed portion 50 b to which the power connection terminal 50 is fixed and the joint holder 92 of the movable handle 22, and below the shaft portion 28 of the movable handle 22. It communicates with a second opening 20b that opens toward the movable handle 22 side, and further communicates with a through-hole 20c that opens forward of the fixed handle 20.

  The power connection terminal 50 and the shaft holder 88 are connected by a current supply plate 50a. The current supplied from the power supply to the power supply connection terminal 50 via the connector 51 flows from the power supply connection terminal 50 to the shaft holder 88 via the energization plate 50a, from the shaft holder 88 to the outer 54, and at the front end of the outer 54. It flows to the inner shaft 56 via the support pin 26 and flows to the front end actuating portion 12.

  The handle portion 14 is provided with movement restricting means 34 for restricting the movable handle 22 so as to rotate only in the direction in which the pair of jaw portions 22 of the front end actuating portion 12 are closed with respect to the fixed handle 20. The movement restricting means 34 includes a movable handle ratchet 42 provided on the movable handle 22, a fixed handle ratchet 48 provided on the fixed handle, a switching wheel 36, a swing lever 66, and a spring 68.

  The state where the movement restricting means is operating is a state where the fixed handle ratchet 48 is engaged with the movable handle ratchet 42 provided on the movable handle 22 as shown in FIG. This state is set by operating the switching wheel 36 so that the swing lever 66 presses the switching wheel 36 in the direction urged by the spring 56 via the fixed handle ratchet 48.

  On the other hand, the state where the movement restricting means is not operating is a state where the fixed handle ratchet 48 is not engaged with the movable handle ratchet 42 provided on the movable handle 22. In this state, the switching wheel 36 is operated so that the switching wheel 36 presses the fixed handle ratchet 48 in a direction opposite to the direction in which the swing lever 66 is urged by the spring 56 via the fixed handle ratchet 48. It is set by doing so.

  As described above, according to the present invention, the power connection terminal 50 is fixed so that the connector 51 can prevent external contact with the exposed portion 96 when the power supply connector 51 is connected to the power supply connection terminal 50. Since it extends from the handle 20 toward the upper position of the exposed portion 96 of the internal shaft 56, the surgeon contacts the exposed portion 96 of the internal shaft 56 when receiving an electric current from the power supply connection terminal 50, so as to receive an electric shock. Can be prevented. In addition, since a part of the inner shaft 56 is exposed between the fixed handle 20 and the joint holder 92 in a state where the power supply connector 51 is not connected to the power connection terminal 50, the handle portion is used to reuse the forceps 1. The inside of 14 can be cleaned with a cleaning solution.

  Further, since it is possible to prevent an electric shock from coming into contact with the exposed portion 96 of the internal shaft 56, the insulating process of the exposed portion 96 where a part of the internal shaft 56 is exposed between the fixed handle 20 and the joint holder 92 is omitted. can do.

  In addition, according to the present embodiment, since the connecting portion 94 between the spherical body 90 at the rear end portion of the internal shaft 56 and the joint holder 92 can be visually observed, the internal shaft 56 detachably attached to the joint holder 92 is correctly attached to the joint holder 92. It can be confirmed whether it is attached or not.

  Further, according to the present embodiment, the operating region 98 communicates with the first opening 14a that opens between the fixed portion 50b to which the power connection terminal 50 is fixed and the joint holder 92 of the movable handle 22, and is movable. The handle portion 14 is communicated with the second opening 20b that opens toward the movable handle 22 below the shaft portion 28 of the handle 22, and further communicates with the through hole 20c that opens to the front of the fixed handle 20. When cleaning, the cleaning liquid blown from the first opening 14 a cleans the inside of the handle portion 14 and blows out from the second opening 20 b and the through hole 20 c, thereby preventing the cleaning liquid from accumulating inside the handle portion 14. be able to.

  DESCRIPTION OF SYMBOLS 1 ... Forceps, 10 ... Shaft part, 12 ... Front end action | operation part, 14 ... Handle part, 14a ... 1st opening, 16 ... Dial, 18 ... Dial, 20 ... Fixed handle, 20a ... Operation part, 20b ... 2nd Opening, 20c ... through hole, 22 ... movable handle, 22a ... operating unit, 24 ... first fixed handle case, 26 ... second fixed handle case, 28 ... shaft, 30 ... first movable handle case, 32 ... second Movable handle case, 34 ... movement restricting means, 36 ... switching wheel, 42 ... movable handle ratchet, 48 ... fixed handle ratchet, 50 ... power supply connection terminal, 50a ... energizing plate, 50b ... fixed part, 51 ... connector, 52 ... inner 54 ... Outer, 56 ... Internal shaft, 58 ... Outer pipe, 60 ... Link mechanism, 62 ... Jaw, 64 ... Shaft, 66 ... Swing lever, 68 ... Sp Ring, 88 ... shaft holder, 90 ... spheroids, 92 ... joint holder, 94 ... connecting unit, 96 ... exposed portion, 98 ... operating region.

Claims (3)

A shaft portion;
A front end actuating portion provided at a front end portion of the shaft portion;
A handle portion that holds the rear of the shaft portion and is capable of operating the front end operating portion, and extends downward from the shaft portion by a predetermined distance;
A forceps including a power connection terminal provided on the handle portion and electrically connected to the front end operation portion via the shaft portion,
The shaft portion has an outer cylinder provided with an insulating portion on an outer peripheral surface, and an inner shaft that is movable in the front-rear direction within the outer cylinder and has conductivity,
The handle portion has a fixed handle and a movable handle that swings in a direction approaching or separating from the fixed handle,
The movable handle is attached to and detached from a shaft portion serving as a fulcrum of swing, an operation portion provided below the shaft portion and operated by an operator, and a rear end portion of the internal shaft provided above the shaft portion. A lever portion that is freely movable and moves the inner shaft in the front-rear direction;
In the forceps in which a part of the inner shaft is exposed between the fixed handle and the lever portion,
The exposed portion of the inner shaft from the fixed handle so that the power connection terminal can prevent external contact to the exposed portion by the connector when a power supply connector is connected to the power connection terminal. A forceps which is extended toward the upper position of. The forceps according to claim 1,
The power connection terminal extends obliquely rearward from the fixed handle so that a connection portion between the rear end portion of the internal shaft and the lever portion can be seen without the connector being connected. Forceps characterized by that. The forceps according to claim 1 or 2,
The fixed handle has a side plate that covers a side of the exposed portion of the internal shaft and covers the periphery of the shaft portion of the movable handle, and the lever portion of the movable handle is within an operation region surrounded by the side plate. Moved,
The operating region communicates with a first opening that opens between a fixed portion to which the power connection terminal is fixed and a lever portion of the movable handle, and on the movable handle side below the shaft portion of the movable handle. A forceps characterized in that it communicates with a second opening that opens toward the front and further communicates with a through-hole that opens in front of the fixed handle.