JP2006326148A - Surgical treatment tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a surgical treatment tool which enables a treatment piece at the leading end of a treatment part to be optionally opened/closed and rotated despite a small-sized type, the treatment part of which can be wholly bent by an angle of 90°, and which enables a person conducting surgical operations to conduct them in a desired position. <P>SOLUTION: This surgical treatment tool is equipped with an insertion part which is to be inserted into the body, an operating part which is provided at the base end of the insertion part so as to be gripped by the person conducting the surgical operations, and the treatment part which is provided at the leading end of the insertion part so as to be rotated and opened/closed by the operating part. The surgical treatment tool is characterized in that a lever and a rotary disc are rotatably fixed to the operating part in parallel in the axial direction, the treatment piece at the leading end of the treatment part can be opened/closed and rotated by the operation of the lever, and the treatment part is bent by the operation of the rotary disc. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a surgical treatment instrument, and more specifically, an insertion portion to be inserted into a body, an operation portion provided at a proximal end portion of the insertion portion and grasped by an operator, and an operation provided at a distal end of the insertion portion. The present invention relates to a surgical treatment instrument provided with a treatment portion that is rotated and / or opened and closed by a portion.

Surgical treatment provided with an insertion portion to be inserted into the body, an operation portion provided at the proximal end portion of the insertion portion and grasped by an operator, and a treatment portion provided at the distal end of the insertion portion and rotated and opened / closed Various tools have been proposed as disclosed in Patent Documents 1 and 2, for example. The surgical treatment instrument of Patent Document 1 moves the insertion portion forward and backward in the axial direction via a drive rod and opens and closes the treatment portion by rotating the hand operation portion and driving shaft. However, the surgical instrument has a drawback in that the drive member is made of a rigid drive rod, which increases the size, making it difficult to operate with one hand and high manufacturing costs. On the other hand, in the surgical treatment instrument described in Patent Document 2, the drive can be made relatively small by using a simple member such as a wire, and the manufacturing cost can be reduced. In addition, the operator's work is limited by opening and closing, and there is a drawback that an appropriate treatment cannot be performed.
JP 2003-10196 A JP 2002-186624 A

  In view of the current situation, as a result of continuing research, the present inventors have made a mechanism that can freely open and close and / or rotate the treatment piece at the distal end of the treatment portion with the operation portion and bend the entire treatment portion by 90 degrees. The present invention has been completed by finding that a surgeon can perform a treatment at a desired position and that a surgical treatment tool that can be made compact and can be manufactured at low cost and can be disposable is obtained. It is. That is,

  The present invention provides a surgical treatment instrument in which a treatment piece at the distal end of a treatment portion can be arbitrarily opened and closed and / or rotated, and the entire treatment portion can be bent by 90 degrees so that an operator can perform treatment at a desired position. For the purpose.

  Another object of the present invention is to provide a surgical treatment tool that is simple, small, low in manufacturing cost, and disposable.

  The present invention that achieves the above object is provided with an insertion portion that is inserted into the body, an operation portion that is provided at the proximal end portion of the insertion portion and is grasped by an operator, and is provided at the distal end of the insertion portion and is rotated by the operation portion. And / or a surgical treatment instrument including a treatment part that is opened and closed, wherein a lever and a rotating disk are fixed to the operation part so as to be rotatable in parallel in the axial direction, and the treatment piece at the distal end of the treatment part is operated by the lever. The surgical treatment tool is characterized in that the treatment part can be bent by the operation of the rotating disk.

  As described above, in the surgical treatment instrument of the present invention, the lever 41 and the rotating disk 42 are arranged in parallel in the axial direction in the operation part, and the treatment part also rotates by rotating the lever. Then, by grasping one end of the lever with, for example, the right hand, the wire 51 fixed to the other end of the lever is pulled, and the treatment pieces 22 and 23 at the distal end of the treatment portion that is normally open are closed, and a sample can be collected or grasped. By rotating the rotating disk while gripping the lever, the treatment portion can be bent, and the treatment piece can be arranged at an arbitrary position, thereby making it easier to collect or grasp the sample. The insertion portion includes a cylindrical tube 72 through which a wire connected to the lever passes, and a cylindrical sheath 73 through which the cylindrical tube passes, and through which the wire fixed to the rotating disk passes. The trocar 8 is fitted to the front. The entire treatment section 2 can be bent 90 degrees by the action of the joints 21 and 31 by the operation of the rotating disk.

  The surgical treatment instrument of the present invention is lightweight and easily grasped with one hand because the operation transmitting means is made of wire and each member is made of heat-resistant stainless steel or heat-resistant plastic. In addition, the manufacturing cost is low and it can be disposable. In addition, high-pressure sterilization can be achieved by making all the operation parts metal.

  The surgical treatment instrument of the present invention can accurately move the treatment piece to a target position by opening / closing and / or rotating the treatment piece and bending the treatment portion. Moreover, high-pressure sterilization can be achieved by making the transmission of the operation including the wire and the operation part made of metal. In particular, the operation portion is made of heat-resistant plastic, so that the weight can be reduced, it can be easily grasped with one hand, the manufacturing cost can be reduced, and it can be used as a disposable treatment instrument.

  The present invention will be specifically described with reference to the drawings. FIG. 1 is a perspective view showing the entire structure of a surgical treatment instrument 1 according to the present invention, which includes a treatment section 2, an in-body insertion section 3, and an operation section 4. The operation unit 4 will be described with reference to the exploded view of FIG. 2. The lever 41 and the rotating disk 42 are fixed to the frame body 43 by pivot pins 44 and 45 so as to be parallel to each other in the axial direction. The lever 41 is grasped with a thumb and pushed downward, whereby the wire 51 fixed to the other end of the lever 41 is pulled, and the treatment pieces 22 and 23 in the open state at the distal end of the treatment section 2 are closed, and a sample piece can be collected or grasped. A spring 61 is locked to the other end of the lever 41 together with the wire 51, and when the lever 41 is released, the wound wire 51 is released and the treatment pieces 22 and 23 are in an open state. The wire 51 passes through the cylindrical tube and is connected to the treatment pieces 22 and 23.

  A rotating disk 42 in which large and small disks 421 and 422 are coaxially fixed is disposed in front of the lever 41 in the axial direction, and wires 52 and 53 are complementarily connected. By rotating the rotating disk 42 in the A-A ′ direction in FIG. 5, the wire 52 or 53 is pulled and the treatment portion 2 is bent in a range of −90 degrees to +90 degrees. The rotating disk 42 is placed on the two springs 62 and 63, is pushed upward, and is fixed by a lock mechanism in which the gear 424 and the stopper 425 in FIG. The rotating disk 42 is rotated after the rotating disk is pushed downward to release the lock. A cylindrical tube 72 through which the wire 51 passes is rotatably supported at the center of the partition 71 of the operation unit. The cylindrical tube 72 rotates independently of the cylindrical sheath 73 by rotating the lever 41. A trocar 8 is fitted to the proximal end portion of the cylindrical sheath 73.

  The insertion part 3 is demonstrated based on FIG. One end of the insertion portion 3 is rotatably fixed to the frame 43 of the operation portion, and a cylindrical tube 72 through which the wire 51 communicates passes therethrough. Joint portions 21 and 31 are provided at the other end of the insertion portion 3. While the spring 33 for communicating the wire 51 is disposed in the joint portion, the wires 52 and 53 in the cylindrical sheath 73 are fixed to the joint portion 21, and the wire is complemented by rotating the rotating disk 42. And the treatment portion 2 bends in the range of −90 degrees to +90 degrees. The treatment portion 2 is connected to the insertion portion 3 via a joint portion, treatment pieces 22 and 23 are pivotally supported by a pivot shaft 24 at the distal end thereof, and a wire 51 is provided on the proximal end side of the treatment pieces 22 and 23. It is connected and changes from an open state to a closed state by the movement of the lever 41 to collect or grasp a sample piece in the body.

  In the actual operation, as shown in FIG. 5, when the treatment section 2 reaches the target location, the operator 41 pushes the lever 41 with the right hand 9, closes the treatment pieces 22 and 23 as shown in FIG. In order to accurately collect and / or reach the treatment piece, the rotating disk 42 is rotated while holding the lever 41 with the palm so that the treatment portion 2 is bent as shown in FIG. If the treatment piece cannot be moved to the target position by the above operation, the lever 41 is rotated to set the position.

  As described above, according to the present embodiment, the entire treatment portion including the treatment piece that can be opened and closed can be bent in the vertical direction and the horizontal direction in the range of −90 degrees to +90 degrees, and the treatment pieces 22 and 23 are also arranged in the vertical direction. And since it can be rotated in the left-right direction, the treatment piece can be easily fixed at the target position, and the degree of freedom of treatment is improved.

  The surgical treatment instrument of the present invention is medically useful in that a treatment piece can be moved to an arbitrary position in the body and a sample piece can be collected or grasped.

The whole structure of the surgical treatment tool 1 of this invention is shown. FIG. 2 is an exploded view of an operation unit in FIG. 1. It is a perspective view of the operation part of FIG. It is an exploded view of the treatment part of FIG. It is the schematic which shows operation of the operation part of FIG. It is explanatory drawing which shows the bending of the treatment part when operating the rotating disc of FIG.

Explanation of symbols

1: Surgical treatment tool 2: Treatment part 3: Insertion part 4: Operation part 21, 31: Joint part 22, 23: Treatment piece 41: Lever 42: Rotating disc 51-53: Stainless steel wire 72: Cylindrical tube 73: Cylindrical sheath 8: Trocar

Claims (3)

An insertion portion to be inserted into the body, an operation portion provided at a proximal end portion of the insertion portion and grasped by an operator, and a treatment portion provided at a distal end of the insertion portion and rotated and / or opened and closed by the operation portion A lever and a rotating disk are fixed to the operation portion so as to be rotatable in parallel in the axial direction, and the treatment piece at the distal end of the treatment portion can be opened and closed and / or rotated by the operation of the lever. A surgical treatment instrument characterized in that a treatment portion is bent by the operation of a rotating disk. The surgical treatment instrument according to claim 1, wherein the treatment piece at the distal end of the treatment portion is rotated by rotation of the lever independently of the insertion portion. The surgical treatment tool according to claim 1 or 2, wherein the operation of the treatment piece and the treatment portion is performed by a wire connected to the operation portion.