WO2019224952A1 - Treatment tool re-processing method - Google Patents

Abstract

The invention is a re-processing method for a treatment tool, the tool comprising: an ultrasound probe 10 whereof the distal end is provided with a blade 11 for applying ultrasonic vibrations to a biological tissue; a sheath 7 wherethrough the ultrasound probe 10 has been inserted; a jaw 8 pivotally supported at the distal end of the sheath 7 so as to be capable of opening-closing relative to the blade 11; and a resin pad 9 mounted on the jaw 8, abutting the blade 11 when the jaw 8 closes against the blade 11. The method includes: a step of pulling out the ultrasound probe 10 from the proximal end of the sheath 7; a step of removing the resin pad 9 from the jaw 8; and, after the step of pulling out the ultrasound probe 10 and the step of removing the resin pad 9, a step of washing the sheath 7 and the jaw 8 pivotally supported at the distal end of the sheath 7.

Description

Treatment tool reprocessing method

The present invention relates to a treatment tool reprocessing method.

2. Description of the Related Art Conventionally, a treatment tool that treats a living tissue by applying treatment energy to the living tissue is known (see, for example, Patent Document 1).
In the treatment tool described in Patent Document 1, ultrasonic energy is adopted as treatment energy. Specifically, the treatment tool includes first and second grasping members that grasp a living tissue. The first gripping member is an ultrasonic probe in which a blade for treating the living tissue by applying ultrasonic vibration to the living tissue is provided at the tip. The second gripping member includes a sheath through which the ultrasonic probe is inserted, and a jaw that can be opened and closed with respect to the blade by being pivotally supported with respect to the distal end of the sheath. Then, the living tissue is grasped between the blade and the jaw.

International Publication No. 2011/099571

In recent years, reprocessing (remanufacturing) of treatment tools has attracted attention because of the effective use of resources, the reduction of medical waste, and the possibility of reducing medical costs.
In addition, treatment tool reprocessing means disassembling, cleaning, replacing parts, reassembling, and sterilizing used treatment tools after treatment of living tissue to confirm that they have the necessary performance. This means that the treatment tool can be used again.
Here, when reprocessing the treatment tool, there is a problem that a part of the treatment tool that grips the living tissue easily enters the living tissue or body fluid and is difficult to clean.

This invention is made in view of the above, Comprising: It aims at providing the reprocessing method of the treatment tool which can wash | clean the used treatment tool after treating a biological tissue efficiently. .

In order to solve the above-described problems and achieve the object, a reprocessing method for a treatment instrument according to the present invention includes an ultrasonic probe in which a blade for applying ultrasonic vibration to a living tissue is provided at the tip, A sheath through which an ultrasonic probe is inserted, a jaw that is pivotally supported with respect to the distal end of the sheath, and that can be opened and closed with respect to the blade; A treatment pad provided with a resin pad that comes into contact with the blade when approaching the blade, the step of extracting the ultrasonic probe from the proximal end of the sheath, and the resin pad from the jaw After the step of removing, the step of extracting the ultrasonic probe, and the step of removing the resin pad, the jaws pivotally supported with respect to the distal end of the sheath And a step of washing the said sheath and.

A treatment tool reprocessing method according to the present invention includes a blade that imparts ultrasonic vibration to a living tissue, a blade that is provided at a distal end, and a shaft that transmits ultrasonic vibration from the proximal end to the blade. An ultrasonic probe having a tube covering the outer peripheral surface of the shaft, a sheath through which the ultrasonic probe is inserted, and can be opened and closed with respect to the blade by being pivotally supported with respect to the distal end of the sheath A reprocessing method for a treatment instrument comprising a jaw, wherein the step of extracting the ultrasonic probe from the proximal end of the sheath, the step of removing the tube from the shaft, and the tube having been removed Cleaning the ultrasonic probe.

A treatment tool reprocessing method according to the present invention includes a blade that imparts ultrasonic vibration to a living tissue, a blade that is provided at a distal end, and a shaft that transmits ultrasonic vibration from the proximal end to the blade. An ultrasonic probe having an annular lining provided on the outer peripheral surface of the shaft and extending along a circumferential direction around the central axis of the shaft; and a sheath through which the ultrasonic probe is inserted; A method for reprocessing a treatment instrument comprising a jaw that is pivotally supported with respect to the distal end of the sheath and that can be opened and closed with respect to the blade, wherein the ultrasonic probe is extracted from the proximal end of the sheath And a step of removing the lining from the shaft and a step of cleaning the ultrasonic probe from which the lining has been removed.

According to the method for reprocessing a treatment instrument according to the present invention, a used treatment instrument after treating a living tissue can be efficiently washed.

FIG. 1 is a diagram showing a treatment tool according to the present embodiment. FIG. 2 is a view showing a distal end portion of the treatment instrument. FIG. 3 is a view showing a distal end portion of the treatment instrument. FIG. 4 is a view showing a jaw. FIG. 5 is a view showing a jaw. FIG. 6 is a diagram illustrating the arm. FIG. 7 is a view showing a wiper jaw. FIG. 8 is a view showing a wiper jaw. FIG. 9 is a view showing a resin pad. FIG. 10 is a view showing a resin pad. FIG. 11 is a view showing a structure for attaching a resin pad to a wiper jaw. FIG. 12 is a view showing a structure for attaching a resin pad to a wiper jaw. FIG. 13 is a flowchart illustrating a method for reprocessing a treatment instrument. FIG. 14 is a diagram illustrating step S1. FIG. 15 is a diagram illustrating step S1. FIG. 16 is a diagram illustrating step S1. FIG. 17A is a diagram illustrating step S3. FIG. 17B is a diagram illustrating step S3. FIG. 18 is a diagram illustrating step S3.

Hereinafter, embodiments for carrying out the present invention (hereinafter, embodiments) will be described with reference to the drawings. The present invention is not limited to the embodiments described below. Furthermore, the same code | symbol is attached | subjected to the same part in description of drawing.

[Schematic configuration of treatment tool]
FIG. 1 is a view showing a treatment instrument 1 according to the present embodiment. 2 and 3 are views showing the distal end portion of the treatment instrument 1. Specifically, FIG. 2 is a diagram viewed from a direction orthogonal to the central axis Ax of the sheath 7. FIG. 3 is a cross-sectional view of the distal end portion of the treatment instrument 1 cut along a plane including the central axis Ax.
The treatment tool 1 treats the target portion by applying ultrasonic energy and high-frequency energy to a portion (hereinafter, referred to as a target portion) to be treated in a living tissue. Here, the treatment means, for example, coagulation and incision of a target site. As shown in FIG. 1, the treatment instrument 1 includes a handpiece 2 and an ultrasonic transducer 3.

As shown in FIGS. 1 to 3, the handpiece 2 includes a holding case 4 (FIG. 1), an operation handle 5 (FIG. 1), a switch 6 (FIG. 1), a sheath 7, a jaw 8, and a resin. A pad 9 (FIGS. 2 and 3) and an ultrasonic probe 10 are provided.
The holding case 4 supports the entire treatment instrument 1. In the present embodiment, the holding case 4 is composed of two bodies. The holding case 4 is configured by combining the two bodies.
The operation handle 5 is movably attached to the holding case 4 and receives an opening / closing operation by the operator.

The switch 6 is provided in a state exposed to the outside of the holding case 4 and receives an output start operation by the operator. The switch 6 outputs an operation signal corresponding to the output start operation to a control device (not shown) electrically connected to the treatment instrument 1.
The sheath 7 has a substantially cylindrical shape as a whole. Hereinafter, one side of the sheath 7 along the central axis Ax is referred to as a distal end side Ar1 (FIGS. 1 to 3), and the other side is referred to as a proximal end side Ar2 (FIGS. 1 to 3). The sheath 7 is attached to the holding case 4 by inserting a part of the base end side Ar2 into the holding case 4 from the distal end side Ar1 of the holding case 4. As shown in FIG. 2 or 3, the sheath 7 includes an outer pipe 71 and an inner pipe 72.

The outer pipe 71 is a cylindrical pipe made of a conductive material. The outer peripheral surface of the outer pipe 71 is covered with an electrically insulating outer tube TO (FIGS. 2 and 3). In the present embodiment, the outer tube TO is a heat shrinkable tube and is in close contact with the outer peripheral surface of the outer pipe 71 by heat shrinkage.
In the outer pipe 71, two first insertion holes 711 (see FIG. 17B) penetrating the inside and the outside of the outer pipe 71 are provided at the end of the distal end side Ar <b> 1. A straight line connecting the two first insertion holes 711 intersects the central axis Ax and is orthogonal to the central axis Ax. In addition, two first pins Pi1 (FIGS. 2 and 17B) are inserted through the two first insertion holes 711, respectively. In the present embodiment, the two first pins Pi1 are fixed to the outer pipe 71 by welding in a state of being inserted through the first insertion holes 711.

The inner pipe 72 is a cylindrical pipe made of a conductive material and having a smaller diameter than the outer pipe 71. The inner pipe 72 is inserted into the outer pipe 71 in a state of being coaxial with the outer pipe 71. The inner pipe 72 moves to the distal end side Ar1 or the proximal end side Ar2 along the central axis Ax in response to an opening / closing operation on the operation handle 5 by the operator.
In the inner pipe 72, two second insertion holes 721 (FIG. 3) penetrating the inside and the outside of the inner pipe 72 are provided at the end of the distal end side Ar <b> 1. In FIG. 3, only one of the two second insertion holes 721 is visible. The straight line connecting the two second insertion holes 721 is parallel to the straight line connecting the two first insertion holes 711 without intersecting the central axis Ax. Further, the second pin Pi2 (FIG. 3) is inserted into the two second insertion holes 721.

In the following, in describing the configuration of the jaw 8 and the resin pad 9, the side away from the blade 11 constituting the ultrasonic probe 10 is referred to as a back side Ar 3 (see FIGS. 4 to 12). The adjacent side is referred to as a blade side Ar4 (see FIGS. 4 to 12).
4 and 5 are views showing the jaw 8. Specifically, FIG. 4 is a perspective view of the jaw 8 as seen from the back side Ar3. FIG. 5 is a perspective view of the jaw 8 as seen from the blade side Ar4. FIG. 5 shows a state in which the resin pad 9 is attached to the jaw 8.
The jaw 8 is pivotally supported with respect to the end portion of the distal end side Ar1 in the sheath 7 so that it can be opened and closed with respect to the blade 11 (FIGS. 2 and 3). The jaw 8 holds the target portion between the jaw 11. As shown in FIG. 4 or FIG. 5, the jaw 8 includes an arm 81 and a wiper jaw 82.

FIG. 6 is a view showing the arm 81. Specifically, FIG. 6 is a perspective view of the arm 81 as seen from the blade side Ar4.
The arm 81 is made of a conductive material. As shown in FIG. 6, the arm 81 is a member in which an arm main body 811 and a pair of bearing portions 812 are integrally formed.
The arm body 811 is constituted by a long plate. In the present embodiment, the longitudinal direction of the arm main body 811 is a curve that goes to the left side toward the distal end side Ar1 when viewed from the proximal end Ar2 with the jaw 8 positioned on the upper side with respect to the blade 11. The direction along.

In the arm main body 811, the blade-side Ar4 surface is provided with a first recess 811A extending from the base end toward the tip end Ar1 along the longitudinal direction of the arm main body 811 as shown in FIG. It has been.
As shown in FIG. 6, the side wall portions 811B on both sides in the width direction of the arm main body 811 constituting the first recess 811A penetrate through the arm main body 811 in the width direction, and the third pin Pi3 (FIG. 4, A third insertion hole 811C through which (FIG. 5) is inserted is provided. The two third insertion holes 811 </ b> C are located at substantially the center in the longitudinal direction of the arm body 811. The straight line connecting the two third insertion holes 811C is parallel to the width direction of the arm body 811. In the present embodiment, the third pin Pi3 is fixed to the arm body 811 by welding in a state where the third pin Pi3 is inserted into each third insertion hole 811C.
In addition, an electrically insulating resin cover RC (FIGS. 4 to 6) is integrally formed on the surface of the back surface Ar3 of the arm body 811 so as to cover the surface of the back surface Ar3. In the present embodiment, the resin cover RC is insert-molded with respect to the arm main body 811. However, the present invention is not limited to this. For example, you may employ | adopt the structure which fixes the resin cover RC with respect to the arm main body 811 with a snap fit or a metal pin.

The pair of bearing portions 812 are provided at the base ends of the arm main body 811, respectively, and are configured by plate bodies facing the arm main body 811 in the width direction.
As shown in FIG. 6, the pair of bearing portions 812 are provided with fourth insertion holes 812 </ b> A that respectively penetrate the front and back surfaces and through which the two first pins Pi <b> 1 are inserted. That is, the arm 81 is connected to the outer pipe 71 by the two first pins Pi1.
Further, as shown in FIG. 4, the pair of bearing portions 812 are provided with fifth insertion holes 812 </ b> B that respectively penetrate the front and back surfaces and are respectively inserted with the second pins Pi <b> 2. In the present embodiment, the second pin Pi2 is fixed to the arm 81 by welding in a state of being inserted into the second insertion holes 721 and the fifth insertion holes 812B. That is, the arm 81 is connected to the inner pipe 72 by the second pin Pi2. The arm 81 rotates about the two first pins Pi1 in conjunction with the movement of the inner pipe 72 to the distal end side Ar1 or the proximal end side Ar2 according to the opening / closing operation on the operation handle 5 by the operator. To do. As a result, the jaw 8 opens and closes with respect to the blade 11.

7 and 8 are diagrams showing the wiper jaw 82. FIG. Specifically, FIG. 7 is a perspective view of the wiper jaw 82 as seen from the rear side Ar3. FIG. 7 shows a state where the resin pad 9 is assembled to the wiper jaw 82. FIG. 8 is a perspective view of the wiper jaw 82 as seen from the blade side Ar4.
The wiper jaw 82 is made of a conductive material and is attached to the arm 81. As shown in FIG. 7 or 8, the wiper jaw 82 includes a wiper jaw main body 83, a plurality of first teeth 84 (FIG. 8), and a plurality of second teeth 85.
The wiper jaw main body 83 is constituted by a long plate extending along the longitudinal direction of the arm main body 811. The outer shape of the wiper jaw main body 83 is set to be substantially the same as the inner shape of the first recess 811A. The wiper jaw main body 83 is installed in the first recess 811A.

In the wiper jaw main body 83, a second recess 831 penetrating from the proximal end to the distal end along the longitudinal direction of the wiper jaw main body 83 is provided on the surface of the blade side Ar4 as shown in FIG. .
The second recess 831 is a portion where the resin pad 9 is installed, and the resin pad 9 abuts against the bottom surface 831A. Then, the bottom surface 831A is set in a state in which the end portion of the front end side Ar1 of the resin pad 9 is bent toward the blade side Ar4 by coming into contact with the resin pad 9. That is, the bottom surface 831A corresponds to the contact surface according to the present invention.

Further, as shown in FIG. 7 or FIG. 8, the side wall portions 831B on both sides in the width direction of the wiper jaw main body 83 constituting the second concave portion 831 penetrate in the width direction of the wiper jaw main body 83, respectively. A sixth insertion hole 831C through which the pin Pi3 is inserted is provided. The two sixth insertion holes 831 </ b> C are located at substantially the center in the longitudinal direction of the wiper jaw main body 83. Further, a straight line connecting the two sixth insertion holes 831 </ b> C is parallel to the width direction of the wiper jaw main body 83. The wiper jaw main body 83 is pivotally supported with respect to the arm 81 so as to be swingable about the third pin Pi3. That is, by making the wiper jaw 82 swingable about the third pin Pi3, when the target part is gripped between the jaw 8 and the blade 11, the strongest force is applied to the target part. The position is positioned not at the base end side Ar <b> 2 of the jaw 8 but at the approximate center in the longitudinal direction of the jaw 8. As a result, a force is applied to the target portion gripped between the jaw 8 and the blade 11 substantially evenly.

Further, as shown in FIG. 8, each side wall portion 831 </ b> B has a plurality of pairs of claws 831 </ b> D that protrude into the second recess 831 and face each other along the width direction of the wiper jaw main body 83 ( In this embodiment, four sets) are provided. The plurality of sets of claws 831 </ b> D are arranged in parallel along the longitudinal direction of the wiper jaw main body 83. Then, a groove 832 (see FIG. 12) according to the present invention is formed by the bottom surface 831A, the side wall portion 831B, and the claw 831D.

The plurality of first tooth portions 84 protrude from the one side wall portion 831 </ b> B toward the blade side Ar <b> 4 and are arranged in parallel along the longitudinal direction of the wiper jaw main body 83.
The plurality of second tooth portions 85 respectively protrude from the other side wall portion 831 </ b> B toward the blade side Ar <b> 4 and are arranged side by side along the longitudinal direction of the wiper jaw main body 83.
The plurality of first teeth 84 and the plurality of second teeth 85 are provided in a state where the resin pad 9 is sandwiched with the resin pad 9 attached to the wiper jaw 82. Yes.

9 and 10 are diagrams showing the resin pad 9. Specifically, FIG. 9 is a perspective view of the resin pad 9 as viewed from the back side Ar3. FIG. 10 is a perspective view of the resin pad 9 as seen from the blade side Ar4. 9 and 10 show the resin pad 9 in a state before being remanufactured by a reprocessing method of the treatment instrument 1 described later.
The resin pad 9 is softer than the ultrasonic probe 10 and is made of a resin material having electrical insulation and biocompatibility, for example, polytetrafluoroethylene (PTFE). The resin pad 9 comes into contact with the blade 11 when the jaw 8 is brought close to the blade 11. As shown in FIG. 9 or FIG. 10, the resin pad 9 includes a pad body 91 and a thick portion 92 (FIG. 10).

The pad main body 91 has a substantially rectangular parallelepiped shape extending linearly.
In the pad main body 91, a third recess 911 extending from the base end toward the tip end Ar1 is provided on the surface of the blade side Ar4 as shown in FIG.
Further, in the pad main body 91, slits 912 penetrating from the distal end to the proximal end are respectively provided on each side surface intersecting the surface of the blade side Ar4 as shown in FIG. 9 or FIG. Here, among the side wall portions on both sides in the width direction of the slit 912 constituting the slit 912, the side wall portion on the back side Ar3 corresponds to the protrusion 913 (FIGS. 9 and 10) according to the present invention.
As shown in FIG. 10, the thick portion 92 is a thin wall provided on the tip side Ar <b> 1 of the third recess 911 in the pad main body 91. By providing the thick portion 92, the inner shape of the tip end Ar1 in the third recess 911 is not complementary to the outer shape of the surface of the blade 11 facing the jaw 8. The inner surface shape of the third recess 911 other than the tip end side Ar1, that is, the inner surface shape of the portion of the third recess 911 where the thick portion 92 is not provided is the outer shape of the surface of the blade 11 facing the jaw 8. The shape is set to be complementary to the shape. That is, when the resin pad 9 is simply applied to the blade 11, there is a gap between the inner surface of the third recess 911 and the outer surface of the blade 11 by providing the thick portion 92. Will occur.
It should be noted that the inner surface shape of the portion of the third recess 911 where the thick portion 92 is not provided is not a complementary shape that completely matches the outer shape of the surface of the blade 11 that faces the jaw 8. It doesn't matter.

FIG. 11 and FIG. 12 are views showing a structure for attaching the resin pad 9 to the wiper jaw 82. Specifically, FIG. 11 is a view of the wiper jaw 82 to which the resin pad 9 is attached viewed from the width direction. FIG. 12 is a cross-sectional view of the wiper jaw 82 to which the resin pad 9 is attached, cut along a plane PL (FIG. 11) orthogonal to the longitudinal direction.
As shown in FIG. 12, the resin pad 9 described above has a pair of protrusions 913 that enter the pair of grooves 832 in the wiper jaw 82 and are locked to the pair of claws 831D. 82 is attached. The resin pad 9 is detachable from the wiper jaw 82 by sliding the pair of protrusions 913 along the longitudinal direction of the wiper jaw 82 in the pair of grooves 832.

The ultrasonic probe 10 has a long shape and is made of a conductive material. Then, as shown in FIG. 2 or 3, the ultrasonic probe 10 is inserted into the inner pipe 72 with the blade 11 exposed to the outside. The ultrasonic probe 10 includes a blade 11 and a shaft 12.
The blade 11 is provided at the tip of the shaft 12. Like the jaw 8, the blade 11 extends along a curve toward the left side toward the distal end side Ar1 when viewed from the proximal end side Ar2 in a state where the jaw 8 is located on the upper side. .

The shaft 12 has a long shape extending along the central axis Ax, and the end of the base end side Ar2 is connected to a BLT (bolt-clamped Langevin type vibrator) constituting the ultrasonic transducer 3. The shaft 12 transmits the ultrasonic vibration generated by the BLT from the end portion of the base end side Ar <b> 2 to the blade 11. In the present embodiment, the ultrasonic vibration is vertical vibration that vibrates in a direction along the central axis Ax. At this time, the blade 11 vibrates with a desired amplitude by the longitudinal vibration of the ultrasonic probe 10.

The outer peripheral surface of the shaft 12 has electrical insulating properties and elasticity, and each of the first to third linings LI1 to LI1 extends along the circumferential direction around the central axis of the shaft 12. LI3 (see FIG. 15) is attached. The first to third linings LI1 to LI3 are positioned at longitudinal vibration nodes P1 to P3 (see FIG. 15) of the ultrasonic probe 10, respectively.

The outer peripheral surface of the shaft 12 is covered with electrically insulating first and second inner tubes TI1, TI2 (see FIG. 15).
The first inner tube TI1 is an outer peripheral surface of the tip end side Ar1 of the shaft 12 so as to cover the first and second linings LI1 and LI2 provided on the tip end side Ar1 of the first to third linings LI1 to LI3. Coating.
The second inner tube TI2 covers the proximal end Ar2 on the outermost surface of the shaft 12 with respect to the third lining LI3 provided on the most proximal side Ar2 among the first to third linings LI1 to LI3. To do. In the present embodiment, the second inner tube TI2 is a heat-shrinkable tube, and is in close contact with the outer peripheral surface of the shaft 12 by heat shrinkage.

The first and second inner tubes TI1 and TI2 described above have a function of ensuring electrical insulation between the outer pipe 71 and the inner pipe 72 and the ultrasonic probe 10. The first and second linings LI1 and LI2 have a function of sealing the liquid that has entered the gap between the first inner tube TI1 and the ultrasonic probe 10. The third lining LI3 has a function of sealing the liquid that has entered the gap between the inner pipe 72 and the first inner tube TI1.

The ultrasonic transducer 3 is detachably connected to the proximal end Ar 2 of the holding case 4. Although not specifically shown, the ultrasonic transducer 3 includes a BLT that generates ultrasonic vibration in response to supply of AC power.

The treatment tool 1 described above operates as described below.
The surgeon holds the treatment tool 1 by hand, and inserts the distal end portion of the treatment tool 1 into the abdominal cavity after passing through the abdominal wall using, for example, a trocar. Then, the surgeon operates the operation handle 5 to open and close the jaw 8 with respect to the blade 11, thereby grasping the target site with the jaw 8 and the blade 11. Thereafter, the operator presses the switch 6. A control device (not shown) electrically connected to the treatment instrument 1 executes the following control in response to an operation signal from the switch 6.

The control device supplies a high-frequency current between the jaw 8 and the blade 11 by way of the outer pipe 71, the inner pipe 72, and the shaft 12. Specifically, a high-frequency current flows between the blade 11 and the plurality of first and second tooth portions 84 and 85 having the same potential. That is, the plurality of first tooth portions 84 correspond to the first electrode portion according to the present invention. The plurality of second tooth portions 85 correspond to the second electrode portion according to the present invention. A high-frequency current flows through the target portion gripped between the jaw 8 and the blade 11. In other words, high frequency energy is applied to the target part.
The control device supplies ultrasonic power to the BLT by supplying AC power to the BLT constituting the ultrasonic transducer 3 substantially simultaneously with the supply of the high-frequency current between the jaw 8 and the blade 11. Is generated. Then, ultrasonic vibration is applied from the blade 11 to the target portion held between the jaw 8 and the blade 11. In other words, ultrasonic energy is applied to the target site.
And Joule heat generate | occur | produces in a target site | part by a high frequency current flowing. In addition, frictional heat is generated between the blade 11 and the target portion due to the longitudinal vibration of the blade 11. As a result, the target site is incised while coagulating.

[Reprocessing method of treatment tool]
Next, the reprocessing method of the treatment tool 1 described above will be described.
FIG. 13 is a flowchart showing a reprocessing method of the treatment instrument 1.
The operator collects the used treatment tool 1 after treating the target site. Then, the worker disassembles the collected treatment instrument 1 as shown below (step S1).
14 to 16 are diagrams for explaining the step S1.
Hereinafter, for convenience of explanation, a unit in which the sheath 7, the outer tube TO, the jaw 8, and the resin pad 9 are integrated will be referred to as a welding unit 100 (FIG. 14). A unit in which the ultrasonic probe 10, the first to third linings LI1 to LI3, and the first and second inner tubes TI1 and TI2 are integrated is referred to as a probe unit 200 (FIG. 14).

First, the operator divides the holding case 4 in which the two bodies are combined into the two bodies. Then, the operator removes the welding unit 100 in a state where the probe unit 200 is inserted into the inner pipe 72 from the holding case 4.
Next, the operator pulls out the probe unit 200 inserted into the inner pipe 72 from the proximal end of the sheath 7 as shown in FIG.

Next, the operator removes the first and second inner tubes TI1, TI2 from the probe unit 200 and uses the first to third linings LI1 as shown in FIG. 15 by using a cutter or the like. Remove LI3. In the following, for convenience of explanation, the unit after the removal of the first and second inner tubes TI1, TI2 and the first to third linings LI1 to LI3 from the probe unit 200 is reused as a probe unit 201 (FIG. 15). (B)).
Next, the operator uses the cutter or the like to remove the outer tube TO from the welding unit 100 as shown in FIG.
Next, the operator removes the resin pad 9 from, for example, the base end side Ar <b> 2 of the wiper jaw 82 by sliding the pair of protrusions 913 along the longitudinal direction of the wiper jaw 82 in the pair of grooves 832. . Hereinafter, for convenience of explanation, the unit after the outer tube TO and the resin pad 9 are removed from the welding unit 100 is referred to as a reuse welding unit 101 (FIG. 16B).

After step S1, the operator cleans, disinfects, and sterilizes the reuse probe unit 201 and the reuse welding unit 101 as shown below (step S2).
Specifically, in the cleaning of the reuse probe unit 201 and the reuse welding unit 101, a large dirt adhering to the reuse probe unit 201 and the reuse welding unit 101 is removed by using a brush or the like. Thereafter, in order to remove pathogenic microorganisms derived from blood, body fluids, mucous membranes, etc., the reusable probe unit 201 is reused with a cleaning solution of any of isopropanol-containing detergent, proteolytic enzyme detergent, and alcohol. The welding unit 101 is ultrasonically cleaned. Note that the cleaning liquid is not limited to the above-described cleaning liquid, and other cleaning liquids may be employed, or a disinfecting liquid may be included.
In the sterilization of the reuse probe unit 201 and the reuse welding unit 101, high-pressure steam sterilization, ethylene oxide gas sterilization, and hydrogen peroxide gas low temperature are used to remove pathogenic microorganisms derived from blood, body fluids, mucous membranes, and the like. Use either sterilization.

After step S2, the operator assembles a new treatment instrument 1 as shown below (step S3).
FIG. 17A, FIG. 17B, and FIG. 18 are diagrams for explaining step S3. Specifically, FIG. 17A is a view in which the procedure for attaching the resin pad 9 to the wiper jaw 82 is viewed along the width direction of the wiper jaw 82. FIG. 17B is a view of the procedure for attaching the resin pad 9 to the wiper jaw 82 as seen from the blade side Ar4. FIG. 18 is a diagram illustrating a procedure in which the dent 93 is formed in the resin pad 9 by the blade 11.
First, the operator provides new first to third linings LI1 to LI3 at the positions P1 to P3 on the outer peripheral surface of the shaft 12 in the reuse probe unit 201. Further, the operator inserts the reuse probe unit 201 into the new second inner tube TI2 from the blade 11, and positions the second inner tube TI2 on the proximal side Ar2 with respect to the third lining LI3. . Then, the operator heat-shrinks the new second inner tube TI <b> 2 to bring the new second inner tube TI <b> 2 into close contact with the outer peripheral surface of the shaft 12. Further, the operator inserts the reuse probe unit 201 into the new first inner tube TI1 from the blade 11, and places the new first inner tube at a position covering the first and second linings LI1 and LI2. Position TI1.
Through the above steps, a new probe unit 200 is formed.

Next, the operator inserts the reuse welding unit 101 into the new outer tube TO from the jaw 8 and positions the new outer tube TO on the outer peripheral surface of the outer pipe 71. Then, the operator heat-shrinks the new outer tube TO to bring the new outer tube TO into close contact with the outer peripheral surface of the outer pipe 71.

Next, as shown in FIG. 17A, the operator opens the jaw 8 toward the rear side Ar <b> 3 in the reuse welding unit 101. Further, the operator lightly bends the distal end Ar1 of the new resin pad 9, and as shown in FIG. 17A or 17B, the new resin pad 9 is inserted into the pair of grooves 832 from the base end of the wiper jaw 82. The pair of protrusions 913 are inserted. Then, in the pair of grooves 832, a new resin pad 9 is attached to the wiper jaw 82 by sliding the protruding portion 913 toward the distal end side Ar <b> 1. As a result, the end of the new resin pad 9 on the front end side Ar <b> 1 is positioned at the end of the wiper jaw 82 on the front end side Ar <b> 1. Then, the new resin pad 9 is set in a state where the end portion of the tip end side Ar1 is bent toward the blade side Ar4 by the bottom surface 831A of the second recess 831.
As described above, when the projection 913 is slid toward the tip end Ar1 in the pair of grooves 832, the blade side Ar4 of the second recess 831 is closed by using a jig or the like. It is preferable. By closing the blade side Ar4 of the second recess 831 in this way, a new resin pad 9 is directed toward the blade side Ar4 from between the claws 831D adjacent to each other along the longitudinal direction of the wiper jaw 82. Jumping out can be prevented.
A new welding unit 100 is formed through the above steps.

Next, the operator inserts a new probe unit 200 from the blade 11 into the inner pipe 72 of the new welding unit 100. Here, the two bodies obtained by dividing the holding case 4 in step S1 are used again. Then, the operator installs a new welding unit 100 in a state where a new probe unit 200 is inserted into the inner pipe 72 between the two bodies, and combines the two bodies, thereby creating a new treatment tool 1. Assemble.

Next, the operator operates the operation handle 5 in the new treatment instrument 1 to bring the jaw 8 close to the blade 11, thereby bringing the resin pad 9 into contact with the blade 11. At this time, as described above, when the resin pad 9 is simply applied to the blade 11, the thick portion 92 is provided, whereby the inner surface of the third recess 911 and the outer surface of the blade 11 are provided. There is a gap between the two. Here, the resin pad 9 is softer than the blade 11. For this reason, when a predetermined pressing force is applied from the blade 11 to the resin pad 9, the region of the base end side Ar2 in the thick portion 92 is plastically deformed as shown in FIG. A recess 93 (FIG. 18) having an inner surface shape complementary to the outer surface shape of the blade 11 is formed at the end of the resin pad 9 on the front end side Ar1. That is, the formation of the recess 93 eliminates the above-described gap between the resin pad 9 and the blade 11. Note that the blade 11 does not plastically deform the region other than the end portion Ar1 in the thick portion 92 and the end portion of the end portion Ar1 in the resin pad 9. That is, the region of the tip end Ar1 in the thick portion 92 remains.
By forming the recess 93 as described above, the tip of the resin pad 9 protrudes toward the blade 11 side. That is, the tip of the resin pad 9 is formed in a claw shape.

In the above description, the dent 93 is formed by plastic deformation. However, the present invention is not limited to this, and the dent 93 may be formed as described below.
In the new treatment instrument 1, the operator operates the operation handle 5 to bring the jaw 8 close to the blade 11, thereby bringing the resin pad 9 into contact with the blade 11. Thereafter, the operator applies ultrasonic vibration from the blade 11 to the resin pad 9 by pressing the switch 6. Due to the ultrasonic vibration, frictional heat is generated between the blade 11 and the resin pad 9. Thereby, the thick portion 92 is deformed. That is, a recess 93 is formed.

After step S3, the operator performs inspection and test of the newly formed treatment tool 1 as shown below (step S4).
Specifically, the examination and test of the treatment tool 1 include biocompatibility, cleaning validation, performance, EOG (ethylene oxide gas) sterilization residue test, bioburden resistance test, sterilization comparative resistance, and viable cell count Various verification tests of the test can be exemplified. Here, in the performance, it is verified that the performance of the newly formed treatment instrument 1 has the same effectiveness and safety as the original product.

After step S4, the operator sequentially performs packaging (step S5), boxing (step S6), sterilization (step S7), and shipment (step S8) of the newly formed treatment instrument 1 in sequence.
The treatment instrument 1 is remanufactured by the steps S1 to S8 described above.

According to the present embodiment described above, the following effects can be obtained.
By the way, when the probe unit 200 is attached to the welding unit 100 and the resin pad 9 is attached to the jaw 8, the gap between the resin pad 9 and the jaw 8 is efficiently cleaned. And cannot be sterilized.
In the reprocessing method of the treatment instrument 1 according to the present embodiment, the probe unit 200 is extracted from the proximal end of the sheath 7 and the resin pad 9 is removed from the jaw 8 in step S1. Further, after step S1, the reuse welding unit 101 is cleaned and sterilized in step S2. For this reason, it is possible to efficiently wash and sterilize the living tissue and body fluid that enter the gap between the resin pad 9 and the jaw 8 and adhere to the jaw 8.
In particular, it is possible to clean the welded parts of the first to third pins Pi1 to Pi3 without disassembling them, so there is no need to recreate the welded parts, effectively using resources and reducing medical waste. Furthermore, it leads to the purpose of reprocessing the treatment tool such as reduction of medical costs.

By the way, the resin pad 9 may be scraped by ultrasonic vibration from the ultrasonic probe 10 and may not be able to perform a desired function.
In the reprocessing method of the treatment instrument 1 according to the present embodiment, a new resin pad 9 is attached to the jaw 8 in step S3 after step S2. For this reason, even after remanufacturing the treatment instrument 1, the function of the resin pad 9 can be maintained at a desired function.

Also, the resin pad 9 is made detachable from the jaw 8 by sliding a pair of protrusions 913 in the pair of grooves 832. For this reason, it is possible to easily remove the resin pad 9 from the jaw 8 in step S1 and attach the resin pad 9 to the jaw 8 in step S3.

Also, in step S2, the reuse welding unit 101 is ultrasonically cleaned by using any one of isopropanol-containing detergent, proteolytic enzyme detergent, and alcohol as a cleaning solution. Furthermore, in the sterilization of the reuse welding unit 101, any one of high pressure steam sterilization, ethylene oxide gas sterilization, and hydrogen peroxide gas low temperature sterilization is used. For this reason, pathogenic microorganisms derived from blood, body fluids, mucous membranes and the like can be removed well. The same applies to the reuse probe unit 201.

Further, the bottom surface 831A provided on the wiper jaw 8 is in contact with the resin pad 9, so that the end portion of the tip side Ar1 of the resin pad 9 is bent toward the blade side Ar4. For this reason, the front-end | tip of the resin pad 9 can be set favorably in the shape of a claw. That is, by making the tip of the resin pad 9 have a claw-like shape, it is possible to reliably grip the target part and prevent slipping when the target part is gripped.

By the way, in the state where the probe unit 200 is attached to the welding unit 100, the ultrasonic probe 10 cannot be efficiently cleaned and sterilized.
In the reprocessing method of the treatment instrument 1 according to the present embodiment, the probe unit 200 is extracted from the proximal end of the sheath 7 and the first and second inner tubes TI1 and TI2 are removed from the shaft 12 in step S1. Further, after step S1, in step S2, the reused probe unit 201 is washed and sterilized. For this reason, it is possible to efficiently wash and sterilize the biological tissue and body fluid that enter the gap between the first inner tube TI1 and the ultrasonic probe 10 and adhere to the ultrasonic probe 10.

In step S1, the first to third linings LI1 to LI3 are removed from the shaft 12. For this reason, it is possible to efficiently clean and sterilize living tissues and body fluids that enter the gap between the first to third linings LI1 to LI3 and the ultrasonic probe 10 and adhere to the ultrasonic probe 10. it can.

(Other embodiments)
So far, the embodiment for carrying out the present invention has been described, but the present invention should not be limited only by the embodiment described above.
In the above-described embodiment, the configuration in which both the ultrasonic energy and the high-frequency energy are applied to the target part is adopted, but the present invention is not limited to this. For example, you may employ | adopt the structure which provides only ultrasonic energy with respect to an object site | part. In addition, when adopting a configuration in which only the ultrasonic energy is applied to the target portion, it is not necessary to ensure electrical insulation between the outer pipe 71 and the inner pipe 72 and the ultrasonic probe 10, The outer tube TO and the first and second inner tubes TI1, TI2 may be omitted.

In the above-described embodiment, the resin pad 9 is configured to be detachable with respect to the jaw 8. However, the present invention is not limited thereto, and for example, a configuration provided for the jaw 8 by insert molding or the like may be adopted. I do not care.

In the embodiment described above, a new resin pad 9 may be attached to the jaw 8 at the following timing.
That is, the operator inserts a new probe unit 200 from the blade 11 into the inner pipe 72 in the reuse welding unit 101. Thereafter, the operator attaches a new resin pad 9 to the jaw 8 of the reuse welding unit 101 by the procedure shown in FIG. 17A.
When the blade 11 is in the way of attaching a new resin pad 9 to the jaw 8, not the base end of the wiper jaw 82 but the tip of the wiper jaw 82 or the longitudinal direction of the wiper jaw 82. Thus, a new resin pad 9 may be inserted between the claws 831D adjacent to each other.

In the above-described embodiment, the first to third linings LI1 to LI3 and the second inner tube TI2 are removed from the probe unit 200 in step S1, but the present invention is not limited thereto, and the first to third linings are not limited thereto. The linings LI1 to LI3 and the second inner tube TI2 may be reused without being removed. Further, in the blade 11, when a coating having electrical insulation is applied to the outer surface on the back surface side separated from the jaw 8, the coating may be removed or removed in step S <b> 1. You can reuse it without doing it.

DESCRIPTION OF SYMBOLS 1 Treatment tool 2 Handpiece 3 Ultrasonic transducer 4 Holding case 5 Operation handle 6 Switch 7 Sheath 8 Jaw 9 Resin pad 10 Ultrasonic probe 11 Blade 12 Shaft 71 Outer pipe 72 Inner pipe 81 Arm 82 Wiper jaw 83 Wiper jaw main body 84 1 tooth part 85 second tooth part 91 pad main body 92 thick part 100 welding unit 101 reuse welding unit 200 probe unit 201 reuse probe unit 711 first insertion hole 721 second insertion hole 811 arm body 811A first 1 concave portion 811B side wall portion 811C third insertion hole 812 bearing portion 812A fourth insertion hole 812B fifth insertion hole 831 second concave portion 831A bottom surface 831B side wall portion 831C sixth insertion hole 831D claw 32 Groove 911 Third recess 912 Slit 913 Projection Ar1 Tip side Ar2 Base end side Ar3 Back side Ar4 Blade side Ax Central axis LI1 First lining LI2 Second lining LI3 Third lining P1 to P3 Nodes of longitudinal vibration Position Pi1 first pin Pi2 second pin Pi3 third pin PL plane RC resin cover TI1 first inner tube TI2 second inner tube TO outer tube

Claims (17)

An ultrasonic probe in which a blade for applying ultrasonic vibration to a living tissue is provided at the tip, a sheath through which the ultrasonic probe is inserted, and a shaft that is pivotally supported with respect to the tip of the sheath. A treatment tool reprocessing method comprising: a jaw that can be opened and closed; and a resin pad that is attached to the jaw and contacts the blade when the jaw approaches the blade. And
Extracting the ultrasonic probe from the proximal end of the sheath;
Removing the resin pad from the jaws;
A method of reprocessing a treatment instrument comprising: after the step of extracting the ultrasonic probe and the step of removing the resin pad, cleaning the jaw and the sheath that are pivotally supported with respect to the distal end of the sheath. The method of reprocessing a treatment instrument according to claim 1, further comprising a step of sterilizing the jaw and the sheath pivotally supported with respect to a distal end of the sheath after the step of cleaning the jaw and the sheath. The method of reprocessing a treatment instrument according to claim 2, further comprising a step of attaching a new resin pad to the jaw after the step of sterilizing the jaw and the sheath. The resin pad is
Having a protrusion that can be inserted into a groove provided in the jaw;
In the process of attaching the new resin pad,
The reprocessing method of the treatment tool according to claim 3, wherein the new resin pad is attached to the jaw by sliding the protrusion in the groove. The jaw is
An arm that can be opened and closed with respect to the blade by being pivotally supported with respect to the distal end of the sheath;
A wiper jaw that is pivotally supported with respect to the arm and to which the resin pad is attached,
In the step of cleaning the jaw and the sheath,
The treatment tool reprocessing method according to claim 1, wherein the sheath, the arm pivotally supported with respect to the distal end of the sheath, and the wiper jaw pivotally supported with respect to the arm are washed. The resin pad is
A protrusion that can be inserted into a groove provided in the wiper jaw;
In the step of removing the resin pad,
The treatment tool reprocessing method according to claim 5, wherein the resin pad is removed from the wiper jaw by sliding the protrusion in the groove. The wiper jaw
The treatment tool reprocessing method according to claim 6, further comprising a first electrode portion and a second electrode portion that are set to the same potential and provided with the resin pad interposed therebetween. The groove is
Extending from the distal end of the wiper jaw toward the proximal end,
In the step of removing the resin pad,
The treatment tool reprocessing method according to claim 6, wherein the resin pad is removed from a base end side of the wiper jaw while sliding the protrusion in the groove. The groove is
Formed by a plurality of claws arranged side by side from the tip of the wiper jaw to the base,
In the step of removing the resin pad,
The treatment tool reprocessing method according to claim 6, wherein the resin pad is removed from between the claws adjacent to each other while sliding the protrusion in the groove. In the step of cleaning the jaw and the sheath,
The reprocessing method for a treatment instrument according to claim 1, wherein the jaw and the sheath pivotally supported with respect to the distal end of the sheath are ultrasonically cleaned. In the step of cleaning the jaw and the sheath,
The method for reprocessing a treatment instrument according to claim 1, wherein a cleaning solution of any one of an isopropanol-containing cleaning agent, a proteolytic enzyme detergent, and alcohol is used. In the step of sterilizing the jaw and the sheath,
The method for reprocessing a treatment instrument according to claim 2, wherein any one of high-pressure steam sterilization, ethylene oxide gas sterilization, and hydrogen peroxide gas low-temperature sterilization is used. After the step of washing the jaw and the sheath, sterilizing the jaw and the sheath pivotally supported with respect to the distal end of the sheath;
Attaching a new resin pad to the wiper jaw after the step of sterilizing the jaw and the sheath;
The treatment tool reprocessing method according to claim 5, further comprising a step of inserting the cleaned and sterilized ultrasonic probe into the sheath after the step of attaching the new resin pad. The wiper jaw
Extending from the distal end toward the proximal end, and having a contact surface that contacts the resin pad,
The contact surface is
The treatment tool reprocessing method according to claim 13, wherein the distal end portion of the resin pad is bent toward the blade side by contacting the resin pad. A blade that imparts ultrasonic vibration to the living tissue, a shaft that is provided at the tip, transmits ultrasonic vibration from the proximal end to the blade, and a tube that covers the outer peripheral surface of the shaft; Reprocessing a treatment instrument comprising: an ultrasonic probe including: a sheath through which the ultrasonic probe is inserted; and a jaw that can be opened and closed with respect to the blade by being pivotally supported with respect to the distal end of the sheath A method,
Extracting the ultrasonic probe from the proximal end of the sheath;
Removing the tube from the shaft;
Cleaning the ultrasonic probe from which the tube has been removed. On the outer peripheral surface of the shaft,
An annular lining extending along the circumferential direction around the central axis of the shaft is attached,
In the step of removing the tube,
The treatment tool reprocessing method according to claim 15, wherein the tube covering the outer peripheral surface of the shaft in a state of covering the lining is removed from the shaft. A blade for applying ultrasonic vibration to a living tissue, a blade provided at the tip, a shaft for transmitting ultrasonic vibration from the proximal end to the blade, and an outer peripheral surface of the shaft; An ultrasonic probe having an annular lining extending along a circumferential direction centering on the central axis, a sheath through which the ultrasonic probe is inserted, and being pivotally supported with respect to the distal end of the sheath A reprocessing method of a treatment instrument comprising a jaw that can be opened and closed with respect to the blade by
Extracting the ultrasonic probe from the proximal end of the sheath;
Removing the lining from the shaft;
Cleaning the ultrasonic probe from which the lining has been removed.

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