JP4476922B2 - Surgical insulator - Google Patents

Description

  The present invention relates to a lever (tweezers), and more particularly to a surgical lever for grasping a sheet-like surgical tool.

  As shown in Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-42147), a surgical insulator is usually composed of a pair of handle bodies and sandwiching legs that are integrated with the handle body, and has an upper and lower length. Are equally defined. When grasping a human body tissue such as a sheet-like surgical aid such as firib, tacocomb, navel or artificial skin or artificial skin (hereinafter collectively referred to as “sheet-like surgical tool”) used for hemostasis using a normal insulator, As shown in FIG. 1, a single operator uses two insulators 1 to appropriately expand a rectangular or square sheet-like surgical tool 15 and apply it to the surgical site.

  Patent Document 2 (Japanese Patent Application Laid-Open No. 2005-124892) proposes an insulator in which the distal ends of a pair of handle bodies are branched, and the outline of the insulator easily forms a smooth and perpendicular nerve cut surface. In addition, the gap between the branch portions is extremely thin for advancing and retracting the blade that cuts the nerve.

  Insulators are often used to hold a semiconductor wafer, and an example thereof is shown in Patent Document 3 (Japanese Patent Laid-Open No. 2001-168181). This insulator has a structure in which the distal ends of a pair of upper and lower handle main bodies are branched in an arc shape, and the wafer is held by the entire branched arc portion. In other words, in the case of a material that is circular except for the facet portion and is hard and has an invariable shape, such as a semiconductor wafer, if the arc portion is partially gripped, the wafer is kept horizontal and heat treatment, diffusion, and other processes are performed. It becomes possible to transfer between.

  In tweezers handling a silicon wafer, it is proposed in Patent Document 4 (Japanese Utility Model Publication No. 63-47033) that an article is securely sandwiched by at least two or more multi-headed portions. In the tweezers, the tip of the multi-head grips the position inside from the wafer periphery.

  Patent document 5 (Japanese Utility Model Laid-Open No. 64-16272) proposes a tweezers having a bifurcated tip. In this tweezers, the width of the bifurcated tip is substantially equal to the width of the handle.

In Patent Document 6 (Japanese Utility Model Publication No. 49-18457), as tweezers used when sewing the skin or the like with a thread, the tip is divided into two forks, and the notches are formed on the left and right sides of the convex piece inside the bifurcated branch. What has been formed is proposed.
JP 2004-42147 A JP 2005-124892 A JP 2001-168181 A Japanese Utility Model Publication No. 63-47033 Japanese Utility Model Publication No. 64-16272 Japanese Utility Model Publication No. 49-18457

Conventionally, when sticking a sheet-like surgical tool to a tissue inside or outside the body cavity such as an affected part, the operator has to use two levers, so both arms are completely engaged in the lever operation. I couldn't operate the forceps other than the lever.
Furthermore, since the vertical length of the insulator is equal, there is a possibility that the tissue may be damaged at the lower portion of the tip portion depending on the handling of the insulator after the sheet is applied, or the tissue cannot be fixed to the target site and is displaced. Furthermore, the insulator proposed in Patent Document 5 is not suitable for gripping a sheet-like surgical tool.
When the sheet-like surgical tool is grasped by the left and right branch portions of the tweezers of Patent Document 6, the projecting piece formed in the center may hit the edge of the sheet, and the sheet may be undesirably deformed.

Considering the case where a lever other than the surgical purpose is applied to the operation, the tweezers gripping method proposed in Patent Document 3 drastically hangs down, the shape is not stable, and the operation is more troublesome than the conventional two levers. become.
When the multi-headed, bifurcated or bifurcated tweezers proposed in Patent Document 4 is applied to gripping a sheet-like surgical tool, it is not preferable that the gripping part comes into contact with other than the affected part where the sheet hits.

The present inventors provide a surgical lever in which the distal end sides of a pair of handle bodies that are vertically opposed to each other, fixed at the rear end side, and freely openable at the distal end side, are bifurcated symmetrically left and right. Branching from the long axis of the handle body in the distal direction until the tip interval is equal to the width or diagonal interval of the sheet-like surgical tool, and the branch-like portion grips the sheet-like surgical tool on both sides or the entire two adjacent sides. The present invention has been completed by confirming that the operation using both hands can be performed with one hand using a surgical lever characterized by the above.
In the present invention, the upper part is the surface of the insulator facing the operator, the lower part is the back side of the insulator that is not visible to the operator, the left and right are the directions seen from the operator, and the tip is away from the operator The end portion and the rear end mean an end portion close to the operator.
The present invention will be described in detail below.

In the lever of the present invention, the distal end of the handle main body grasped by the operator is branched in the distal direction, and the branching portion is extended until the distal end interval becomes the width or diagonal interval of the sheet-like surgical instrument. For this reason, the main part of a sheet | seat can be made to contact an operation | movement treatment part in the state which hold | gripped the edge part of the sheet-like surgical instrument (henceforth "sheet"). In addition, since the sheet is flexible and the shape is not stable, it is possible to operate the sheet in a state where it does not droop drastically by gripping both opposing pieces of the sheet or the entire two adjacent sides with the branch part. Can be brought into contact with the part. For this reason, it has become possible to attach a sheet to an affected area using a single insulator. Moreover, after sticking a sheet | seat on an affected part, the most advanced part is open | released with the spring force of an insulator, and when the insulator is pulled away from an affected part, the sheet | seat is maintaining the state stuck on the affected part.

As one embodiment of the above-described branching portion, the branching portion on the distal end side is constituted by a base portion and a forefront side, so that the branching portion has a “U” shape.
Here, since the base of the branching portion extends in a direction substantially orthogonal to the long axis of the handle body, it does not interfere with the seat, does not interfere with the operation of the operation, and has a short length. The entire portion on both sides of the sheet can be securely held by the portion. The cutting edge is bent at a right angle from the base and is almost parallel to the long axis of the handle, so that the operation of the handle is directly transmitted to the cutting edge. As a result, a lever operation without waste becomes possible. The branching portion branches at an interval larger than the width of the central portion of the handle main body held by the operator, so that the sheet can be gripped at the same position as when two conventional levers were operated. Further, since the leading edge can press the sheet along both sides of the sheet, there is no possibility that the sheet is displaced or dropped during the lever movement.

  As another embodiment of the branch portion, the sheet is integrally gripped without dividing the branch portion from the handle main body into the front end side and the base portion, and for this purpose, along the two adjacent sides of the sheet So that the tip branches off.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is a plan view of an insulator according to an embodiment of the present invention. Although the rear view has the same structure, it is explained here as a plan view.

  The handle main body 10 is arranged in a pair facing up and down, welded at the rear end 10b, and opened at the front end 10a side. A large number of grooves 11 are formed at the center portions 10c at both ends so that the hand of the operator does not slip. The handle body 10 is tapered toward the distal end side 10a.

Reference numeral 12 denotes a branching portion that branches the tip side of the handle body 10 to the left and right. The base portion 13 of the branching portion 12 branches within about 90 ° ± 5 ° with respect to the long axis of the handle body 10. If it is out of this range, it becomes difficult to grip the sheet or hinders smooth operation. The most advanced side 14 that is continuous with the base 13 extends in substantially the same direction as the axis of the handle body 10, and grips both sides of the sheet 15. Since the sheet 15 is gripped by the upper and lower surfaces as shown in FIG.
The distance between the left and right tip portions 14 (FIG. 3) is such that both sides of the sheet 15 can be gripped, and is larger than the maximum width of the handle body central portion 10c, preferably 1.5 times or more and about 20 to 80 mm. .

  Furthermore, according to a preferred embodiment of the present invention, as shown in FIGS. 5 (a) and 5 (b), when the branching portion 12 is inclined upwardly with respect to the handle body 10, the sheet can be very accurately operated by one-hand operation. Can be affixed to the affected area. That is, the lever can be moved in the direction (1) of FIG. 5B to attach the sheet to the affected part, and then the lever tip can be opened to move the lever in the direction (2). The inclination angle (θ) is preferably in the range of 10 to 30 °.

  According to a more preferred embodiment, when the lower portion 12b of the branching portion 12 is made shorter than the upper portion 12a as shown in FIG. 6, there is no possibility of scratching the affected tissue or the like with the most advanced portion 14 when the insulator is pulled out from the body. .

In the insulator shown in FIG. 7, the same parts as those in FIG. Further, the forefront portion 14 is symmetrically branched from the handle body 10 at an angle of about 90 °, preferably 30 to 60 mm, and holds the entire adjacent two sides of the sheet 15. Although the two sides that are not gripped slightly hang down, the sheet 15 can be accurately processed by applying it to the affected area in a state where the direction of sag and the direction of the handle 10 are approximately coincident.

  As described above, when the lever of the present invention is used, the operation of the seat which has been conventionally used with both hands can be performed with one hand. The operation accuracy is greatly improved.

It is a conceptual diagram explaining the operation operation using the conventional insulator. It is a top view of the insulator which concerns on one embodiment of this invention. It is a figure which shows the condition where the branch part of the insulator of FIG. 2 is holding the sheet | seat. FIG. 4 is a side view of FIG. 3. It is a figure of the insulator which concerns on another embodiment of this invention, (a) is a top view, (b) is a side view. It is a side view of the insulator which concerns on another embodiment of this invention. It is a top view of the insulator which concerns on another embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 insulator 10 handle body 12 branch part 13 base 14 most advanced part 15 sheet

Claims (3)

In a surgical insulator in which the distal end side of a pair of handle bodies that are arranged vertically opposite to each other, fixed at the rear end side, and freely openable at the distal end side, bifurcated symmetrically to the left and right, the branch portion is connected to the long axis of the handle body. Branching in the distal direction until the distance between the distal ends is equal to the width or diagonal interval of the sheet-like surgical instrument, and the sheet-like surgical instrument is grasped on both sides or the entire adjacent two sides by the branching portion. Yuzu. 2. The surgical insulator according to claim 1, wherein a branch portion for gripping the sheet-like surgical tool is inclined upward with respect to the handle body. The surgical insulator according to claim 1 or 2, wherein a lower side is shorter than an upper side of a portion that holds the sheet-like surgical tool.