JP2005110935A - Ultrasonic treatment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a more inexpensive and economical ultrasonic treatment apparatus. <P>SOLUTION: The ultrasonic apparatus comprises a grip member 26 facing a probe part 6 and a movable handle unit with a movable handle for operating the grip member. The movable handle unit is detachable from a vibration unit 2, and the grip member is integrally formed with a member of the movable handle. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an ultrasonic treatment apparatus that operates a gripping member facing a probe unit with a handle, grips a treatment target such as a living tissue between the probe unit and the gripping member, and performs ultrasonic treatment on the treatment target. About.

There are Patent Document 1 and Patent Document 2 as documents of the prior art relating to this type of ultrasonic treatment apparatus. In the prior arts of Patent Document 1 and Patent Document 2, a jaw is fixed to a tip of an arm portion attached to a grip portion of a handpiece by a screw, and a so-called Teflon gripping member is attached to the jaw. It is attached using grooves and pins.
JP 2000-249 A JP 2001-57985 A

  In the techniques of Patent Document 1 and Patent Document 2, the grip member is fixed to the jaw using a groove, a pin, or the like. This complicates the structure and increases the number of parts. As a result, the unit price of the unit increases. Furthermore, since the assembly of the unit is complicated, the assembly cost is increased and the product cost is increased.

  In this type of ultrasonic treatment apparatus, when used, the portion of the gripping member is particularly worn out and reaches the end of its life before the other portions. When the gripping member was worn, it was necessary to discard the entire handle and purchase a new one each time. This led to high costs for users.

  The present invention has been made in view of the above points, and an object thereof is to provide a cheaper and more economical ultrasonic treatment apparatus.

An ultrasonic treatment apparatus of the present invention includes a vibrator that generates ultrasonic vibration, a casing that covers the vibrator, a transmission member that is connected to the vibrator and transmits ultrasonic vibration from the vibrator, A transducer unit that is connected to the distal end of the transmission member and includes a probe unit that contacts the treatment object and transmits vibration from the transmission member to the treatment object;
A gripping member facing the probe unit, and a movable handle unit including a movable handle for operating the gripping member,
The movable handle unit is detachable from the vibrator unit, and the gripping member is formed so as to be integrated with a member of the movable handle.

  According to the present invention, since the gripping member is integrally provided on the member of the movable handle by molding, the number of parts of the movable handle unit and the assembly cost can be reduced, and the cost can be suppressed. In addition, even if the gripping member of the movable handle unit wears out due to use and reaches the end of its life, the movable handle unit can be regenerated by collecting the movable handle attached with the gripping member, removing the gripping member, and remolding. . Furthermore, by devising the shape of the tip of the movable handle that is molded and attached to the gripping member, the gripping member can be easily removed from the tip of the movable handle after collection.

  Hereinafter, the ultrasonic treatment device according to the first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the ultrasonic treatment instrument 1 of this embodiment is a combination of a transducer unit 2 and a movable handle unit 3.

  The transducer unit 2 has a cover (casing) 4 that is relatively long and formed in a substantially cylindrical shape over its entire length, and an ultrasonic transducer (not shown) that is a vibration source that generates ultrasonic waves in the cover 4; A horn 5 is provided which is connected to the ultrasonic transducer and amplifies the ultrasonic wave. A probe 6 is connected to the horn 5. The probe 6 extends forward from the tip of the cover 4. The ultrasonic vibration from the vibrator is transmitted to the probe 6 through the horn 5, and the horn 5 to the probe 6 constitute a member that transmits the ultrasonic vibration. Here, the horn 5 and the probe 6 are integrally formed, and the base end portion of the horn 5 is detachably connected to the ultrasonic transducer. With such a configuration, the unit of the horn 5 and the probe 6 can be exchanged integrally. In addition, it is good also as a structure which attaches and detaches the part of the said horn 5 and the probe 6. FIG. In this system, only the probe 6 can be attached to and detached from the horn 5.

  As shown in FIG. 1, a flexible handpiece cord 7 is connected to the proximal end of the vibrator unit 2, and this handpiece cord 7 extends to a power supply device (not shown) and is connected to the power supply device. Then, power is supplied from the power supply device to the ultrasonic transducer through the handpiece cord 7. Then, the ultrasonic transducer is driven to oscillate ultrasonic vibration. The horn 5 amplifies the ultrasonic vibration generated by the ultrasonic vibrator and expands the amplitude of the ultrasonic vibration, and the expanded ultrasonic vibration is transmitted to the probe 6. Here, the distance from the proximal end position of the ultrasonic transducer to the distal end position of the probe 6 is the length of one wavelength of ultrasonic vibration.

  As shown in FIG. 1, one fulcrum pin 8 is provided near the front end (tip) of the cover 4, and this fulcrum pin 8 protrudes from one side surface of the cover 4 to the side. 4 and 5, a pair of cut surfaces (so-called D-cut surfaces) 10a are formed on the shaft portion 9 of the fulcrum pin 8, and the pair of cut surfaces 10a are parallel to each other on opposite sides. It is given as two sides. Thus, the parallel plate-shaped cut part 10 is formed in the axial part 9 of the fulcrum pin 8 by forming the cut surface 10a in the two opposite sides. Further, as shown in FIG. 4, the plate-like cut portion 10 is formed with a width d smaller than the shaft diameter D <b> 1 of the shaft portion 9. Further, the plate surface direction of the cut portion 10 formed in a plate shape is inclined at an angle θ with respect to the major axis direction L of the vibrator unit 2.

  As shown in FIG. 5, the distal end portion of the fulcrum pin 8 is a retaining cover 12 that prevents a movable handle 23 (described later) attached to the shaft portion 9 from coming off, and the diameter D2 of the retaining cover 12 is as described above. It is larger than the shaft diameter D1 of the shaft portion 9. A flange 13 is integrally formed at the base end of the fulcrum pin 8. The flange 13 is formed to have a diameter larger than the shaft diameter D1 of the shaft portion 9 and equal to the diameter D2 of the retaining cover 12 described above. Therefore, a movable handle 23 (to be described later) mounted on the shaft portion 9 is positioned between the retaining cover 12 and the flange 13 and rotates at a fixed position with the center of the shaft portion 9 as a fulcrum. ing.

  On the other hand, the movable handle unit 3 is formed into a predetermined handle shape by appropriately bending the movable handle member 22 cut out integrally from the plate material 21 shown in FIG. 9 by punching as shown in FIGS. The integrated movable handle 23 is provided. A ring-shaped finger hook portion 24 is formed at the base end portion of the movable handle member 22. As shown in FIG. 1, the finger rest 24 is formed at a position corresponding to the finger rest 25 formed on the cover 4 of the vibrator unit 2 described above.

  Further, as shown in FIG. 9, a notch 27 for attaching a gripping member 26 described later by welding or the like is formed at the distal end portion of the movable handle member 22. In the present embodiment, the opening width at the notch tip where the notch 27 is formed is wider than the width on the base end side.

  As shown in FIG. 6, the movable handle 23 is provided with a round shaft support hole 31 serving as a rotation fulcrum and a slit-like groove 32 connected to the center in the intermediate portion. The hole 31 is formed in a round shape with a diameter suitable for the shaft portion 9 of the fulcrum pin 8 in the vibrator unit 2. The movable handle 23 is pivotally supported on the vibrator unit 2 by fitting the shaft portion 9 of the fulcrum pin 8 into the hole 31.

  The groove 32 of the movable handle 23 is formed in a slit shape with the width d of the cut portion 10 of the fulcrum pin 8 or a width slightly larger than that, and when the direction of the groove 32 coincides with the inclination direction of the cut portion 10 The shaft portion 9 of the fulcrum pin 8 can be inserted into the hole 31 through the groove 32. The direction of the groove 32 is selected so as to coincide with the inclination direction of the cut portion 10 when the movable handle 23 is tilted beyond a predetermined range of rotation during use in the assembled state as shown in FIG. The In the present embodiment, as shown in FIG. 6, when the movable handle 23 is assembled to the vibrator unit 2, the direction of the groove 32 is substantially perpendicular to the inclination direction of the cut portion 10 of the fulcrum pin 8.

  As shown in FIG. 1, the above-described gripping member 26 is integrally attached to the distal end portion of the movable handle 23 by molding. The gripping member 26 is made of a resin material having a low friction coefficient such as PTFE in order to prevent the probe 6 from being worn. A plurality of teeth 35 are formed on the surface of the gripping member 26 that is in contact with the probe 6, and the treatment object can be securely gripped by the teeth 35.

  In this way, the gripping member 26 is formed at the distal end portion of the movable handle 23. In this embodiment, PFA capable of injection molding is used as the material of the gripping member 26, and the gripping member 26 is assembled to the distal end portion of the movable handle 23 by insert molding so that the movable handle 23 and the gripping member 26 are integrated. I did it.

  Alternatively, modified PTFE or the like may be used as the material of the gripping member 26, and may be formed by ultrasonic welding or the like, and attached to the distal end portion of the movable handle 23 so that the gripping member 26 is integrated with the movable handle.

  As shown in FIG. 3, a notch 27 is formed at the distal end portion of the movable handle 23, and the notch 27 has an opening width at the notch distal end portion wider than the width on the proximal end side. For this reason, after the gripping member 26 is formed by insert molding at the distal end portion of the movable handle 23, the gripping member 26 is firmly fixed to the movable handle 23, and is prevented from being detached from the movable handle 23. Further, the notch 27 at the distal end portion of the movable handle 23 is wider at the distal end portion of the notch than the proximal end portion, so that the grip member 26 is spaced along the distal end portion of the movable handle 23 so as to be closer to the distal end side. However, a wide groove 28 is formed.

  Next, a method for assembling and removing the vibrator unit 2 and the movable handle unit 3 will be described with reference to FIGS.

  As described above, the width of the groove 32 of the movable handle 23 is a size corresponding to the width d of the cut portion 10 of the fulcrum pin 8 described above, and the diameter of the round hole 31 is the diameter of the shaft portion 9 of the fulcrum pin 8. It is the dimension corresponding to. Therefore, when the vibrator unit 2 and the movable handle unit 3 are in the positional relationship shown in FIG. 6, that is, the positional relationship in which the groove 32 of the movable handle 23 and the orientation of the cut portion 10 of the vibrator unit 2 coincide with each other. The cut portion 10 of the vibrator unit 2 can be inserted into the groove 32.

  While maintaining this positional relationship, the cut portion 10 of the vibrator unit 2 is inserted into the groove 32 of the movable handle 23, and the shaft portion 9 of the fulcrum pin 8 is fitted into the hole 31 of the movable handle 23. In this engaged state, the movable handle 23 is rotated counterclockwise with respect to the vibrator unit 2 as shown in FIG. Then, as shown in FIGS. 1 and 2, the movable handle 23 is connected to the fulcrum pin 8 of the vibrator unit 2 so as to be pivotally supported.

  The movable handle 23 is always supported by the vibrator unit 2 within a predetermined range in which the movable handle 23 is rotated during use.

  Further, since the retaining cover 12 is provided at the protruding tip portion of the fulcrum pin 8, the movable handle 23 cannot be detached from the fulcrum pin 8. Further, the movable handle unit 3 is sandwiched between the vibrator cover 4 and the cover 12 of the fulcrum pin 8 to prevent the fulcrum pin 8 from rattling in the axial direction. The rotation of the movable handle unit 3 is ensured.

  Further, when removing the movable handle unit 3 from the vibrator unit 2, the movable handle 23 is largely rotated to the position shown in FIG. At this position, the direction of the cut portion 10 of the fulcrum pin 8 and the groove 32 coincide with each other, and the cut portion 10 of the fulcrum pin 8 can be pulled out through the groove 32 so that the movable handle unit 3 can be detached from the vibrator unit 2.

  Next, a case where a living tissue is treated using the ultrasonic treatment tool will be described. First, the living tissue is positioned between the gripping member 26 of the movable handle unit 3 and the distal end portion of the probe 6. Then, a finger of one hand is put on the finger rest portion 24 of the movable handle 23 and the finger rest portion 25 of the vibrator unit 2, and the movable handle 23 is rotated, so that the living tissue is interposed between the gripping member 26 and the probe 6. Grip.

  Then, while holding the living tissue, power is supplied to the ultrasonic transducer of the transducer unit 2 to vibrate the ultrasonic transducer. This ultrasonic vibration is amplified by the horn 5 and transmitted to the probe 6. When the probe 6 vibrates, the living tissue in contact with the probe 6 is incised by the ultrasonic vibration or solidified by frictional heat.

  By the way, when the ultrasonic treatment tool is repeatedly used, the gripping member 26 is worn and deteriorated due to friction with the probe 6. In that case, the movable handle unit 3 is detached from the vibrator unit 2 and only the movable handle unit 3 is recovered.

  The collected movable handle unit 3 is recycled by a contractor. That is, the grip member 26 is removed from the movable handle 23. At this time, the holding member 26 is pulled in the distal direction using a jig. Since the movable handle 23 is formed of a spring plate, when the gripping member 26 is pulled strongly, the tip width of the notch 27 provided at the tip of the movable handle 23 follows the groove 28 in the gripping member 26. The tip of the movable handle 23 can be easily pulled out of the groove, and the gripping member 26 can be removed from the movable handle 23.

  After the gripping member 26 is removed, a new gripping member 26 is attached to the distal end portion of the movable handle 23 by a molding means such as insert injection molding or ultrasonic welding, and the movable handle unit 3 is regenerated. The regenerated movable handle unit 3 is recoiled to a recovery-source hospital or the like.

  As described above, in this embodiment, the movable handle 23 of the movable handle unit 3 can be formed by punching and punching the plate material 21 and bending the member 22. For this reason, an ultrasonic treatment tool can be provided at low cost.

  When the gripping member 26 of the movable handle unit 3 is worn and deteriorated by repeated use, only the movable handle unit 3 is recovered, the gripping member 26 is replaced, and the movable handle unit 3 is regenerated. Return it to the user. Since the user does not need to replace the entire movable handle 23, the cost can be reduced.

  In the above embodiment, the part of the retaining cover 12 of the fulcrum pin 8 is formed integrally with the fulcrum pin 8, but the part of the retaining cover 12 is a separate member from the fulcrum pin 8 as will be described later. And may be fixedly attached to the fulcrum pin 8 by welding or adhesion.

  Moreover, the following may be used as one form when the part of the cover 12 for preventing slipping is configured as a member separate from the fulcrum pin 8. That is, as shown in FIGS. 10 and 11, the intermediate portion of the fulcrum pin 8 is the shaft portion 9, and the diameter of the shaft portion 9 is D1. The distal end portion of the fulcrum pin 8 located on the distal end side of the shaft portion 9 forms a mounting portion 41 smaller than the shaft diameter D1 of the shaft portion 9, and a removal prevention cover 42 is attached to the outer periphery of the mounting portion 41. Install freely. A screw part 43 is formed on the outer periphery of the attachment part 41, and the above-mentioned removal prevention cover 42 is screwed in and attached detachably.

  Since the shaft diameter D2 of the mounting portion 12 is smaller than the shaft diameter D1 of the shaft portion 9, a step end surface 44 is formed between the mounting portion 12 and the shaft portion 9, and when the slip-off prevention cover 42 is screwed, The prevention cover 42 finally comes into contact with the step end face 44 and restricts further screwing. Accordingly, the width l of the shaft portion 9 can be accurately determined and the removal preventing cover 42 can be strongly tightened and fixed to the mounting portion 12. In this case, only the hole 31 without the groove 32 may be formed in the movable handle 23.

  Further, when the movable handle 23 is attached to and detached from the vibrator unit 2, the removal preventing cover 42 is removed from the fulcrum pin 8, and the fulcrum pin 8 is inserted into and removed from the hole 31 of the movable handle 23 from the side.

  When the shaft portion 9 having the cut portion 10 as described above is formed on the fulcrum pin 8, the removal prevention cover 42 screwed into the fulcrum pin 8 may be fixed to the fulcrum pin 8 by welding or adhesion.

  Next, the ultrasonic treatment instrument of the second embodiment will be described with reference to FIGS. 12 and 13. In the ultrasonic treatment instrument 1 according to the above-described embodiment, one fulcrum pin 8 is provided on the transducer unit 2 and the movable handle unit 3 is pivotally supported on the one fulcrum pin 8. The movable handle unit 3 is pivotally supported by using fulcrum pins 8 provided on the left and right side surfaces of the tip portion. That is, as shown in FIG. 12, the left and right handle portions A and B are separated from the distal end portion of the movable handle 23, and the handle portions A and B have a round hole 31 corresponding to the fulcrum pin 8 and a groove connected thereto. Thirty-two sets are formed.

  Further, as shown in FIG. 13, the movable handle 23 is formed by punching a plate 21 having a shape corresponding to the movable handle 23. The punching member is appropriately bent so as to have a shape as shown in FIG. The movable handle 23 is provided with a set of round holes 31 and grooves 32 at the left and right at the position serving as a fulcrum, and two sets of shaft portions 9 are provided at the left and right at the tip of the vibrator unit 2. The parts A and B of the movable handle 23 are bent so as to be in contact as shown in FIG. 11, and then the above contact surfaces are connected by welding or the like to be integrated.

  In the first embodiment described above, the notch 27 formed at the distal end portion of the movable handle 23 is wide at the distal end side, but in this embodiment, the rear end side is wide. Other than this, the configuration is the same as that of the first embodiment described above. It can be handled in the same way as in the first embodiment.

  In this embodiment, the movable handle is connected to the vibrator unit at one location. However, in this embodiment, the movable handle is connected at two locations, so that the vibrator unit 2 and the movable handle 23 are less likely to be shaken and more stable treatment is possible. It becomes. Further, since it is pivotally supported at two places on the left and right, it is also positioned in the axial direction. For this reason, a fulcrum pin cover becomes unnecessary. Thereby, washing around the fulcrum pin becomes easier. In addition, the same effects as those of the first embodiment can be obtained.

<Appendix>
1. A vibrator for generating ultrasonic vibration, a casing for covering and gripping the vibrator, a transmission section provided at the tip of the vibrator, for enlarging / transmitting ultrasonic vibration from the vibrator, A probe portion that is provided at a distal end portion of the transmission portion and contacts the living tissue to transmit vibration from the transmission portion to the biological tissue; a rotation shaft provided in the casing; and a rotation shaft provided on the rotation shaft. In the ultrasonic treatment apparatus which has a movable handle for operating a tip gripping member which is pivotally supported and is opposed to the probe portion, and the casing and the movable handle are detachable, the tip gripping member is It is molded integrally with the movable handle.

  2. 2. The ultrasonic treatment apparatus according to claim 1, wherein a notch is provided at a distal end portion of the movable handle, and the gripping member is formed at a portion including the notch.

  3. 2. The ultrasonic treatment apparatus according to claim 2, wherein the notches have different widths at the front end portion and the rear end portion.

  4). 2. The ultrasonic treatment apparatus according to claim 2, wherein the inner width of the notch is such that the front end side portion of the notch is wider than the rear end side portion.

  5). 2. The ultrasonic treatment apparatus according to claim 2, wherein the width of the front end portion provided with the notch is wider at the front end side portion of the front end portion than at the rear end side portion.

  6). A vibrator for generating ultrasonic vibration, a casing for covering and gripping the vibrator, a transmission section provided at the tip of the vibrator, for enlarging / transmitting ultrasonic vibration from the vibrator, A probe portion that is provided at a distal end portion of the transmission portion and contacts the living tissue to transmit vibration from the transmission portion to the biological tissue; a rotation shaft provided in the casing; and a rotation shaft provided on the rotation shaft. An ultrasonic treatment apparatus that has a movable handle that is pivotally supported and has a movable handle for operating a tip gripping member that faces the probe portion, wherein the movable handle is integrally formed from a plate material.

  7). 6. The ultrasonic treatment apparatus according to claim 6, wherein the movable handle is manufactured by bending a plate material punched by press working.

  A movable handle in a conventional ultrasonic treatment apparatus is manufactured by a combination of a metal member shaving product, a molded product, and a resin molded product. The cost was.

  Therefore, according to the seventh item, it is possible to provide the handle at a lower cost by making the handle by punching and bending the plate material.

The side view of the ultrasonic treatment tool concerning a 1st embodiment of the present invention. The top view of the movable handle unit of the ultrasonic treatment tool concerning a 1st embodiment of the present invention. Sectional drawing which carried out the longitudinal section of the attachment part which attached the holding member integrally to the front-end | tip of the movable handle of the ultrasonic treatment tool which concerns on the 1st Embodiment of this invention, and was seen from the top. The side view which shows the part of the pivot pin in the vibrator | oscillator unit of the ultrasonic treatment tool which concerns on the 1st Embodiment of this invention. Sectional drawing of the part which supported the movable handle in the pivot pin in the vibrator | oscillator unit of the ultrasonic treatment tool which concerns on the 1st Embodiment of this invention. Explanatory drawing of the procedure which attaches a movable handle to the vibrator | oscillator unit of the ultrasonic treatment tool which concerns on the 1st Embodiment of this invention. Explanatory drawing of the procedure which attaches a movable handle to the vibrator | oscillator unit of the ultrasonic treatment tool which concerns on the 1st Embodiment of this invention. Explanatory drawing of the procedure which removes a movable handle from the vibrator | oscillator unit of the ultrasonic treatment tool which concerns on the 1st Embodiment of this invention. (A) is a top view of the form which cuts out the movable handle of the ultrasonic treatment tool concerning a 1st embodiment of the present invention by punching from a board material, and (B) is a side view of the board material of the movable handle. The side view which shows the part of the pivot pin in the vibrator | oscillator unit of the ultrasonic treatment tool which concerns on other embodiment. Sectional drawing of the part which supported the movable handle in the pivot pin in the vibrator | oscillator unit of the ultrasonic treatment tool which concerns on the said other embodiment. The top view of the movable handle unit of the ultrasonic treatment tool which concerns on the 2nd Embodiment of this invention. (A) is a top view of the form which cuts out the movable handle of the ultrasonic treatment tool which concerns on the 2nd Embodiment of this invention from a board | plate material by a punching process, (B) is a side view of the board | plate material of the movable handle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Ultrasonic treatment tool, 2 ... Vibrator unit, 3 ... Movable handle unit 4 ... Cover, 5 ... Horn, 6 ... Probe, 7 ... Handpiece cord 8 ... Supporting pin, 9 ... Shaft part, 10 ... Cut part, 21 ... board material,
23 ... Moveable handle, 26 ... Gripping member, 31 ... Hole, 32 ... Groove

Claims (4)

A vibrator that generates ultrasonic vibration, a casing that covers the vibrator, a transmission member that is connected to the vibrator and transmits ultrasonic vibration from the vibrator, and is connected to a tip portion of the transmission member, A transducer unit including a probe unit that contacts a treatment object and transmits vibration from the transmission member to the treatment object;
A gripping member facing the probe unit, and a movable handle unit including a movable handle for operating the gripping member,
The ultrasonic treatment apparatus, wherein the movable handle unit is detachable from the transducer unit, and the gripping member is formed so as to be integrated with a member of the movable handle.   2. The ultrasonic treatment apparatus according to claim 1, wherein a notch is provided at a distal end portion of the movable handle, and the gripping member is molded and attached integrally to a portion including the notch.   The ultrasonic treatment apparatus according to claim 1, wherein the gripping member is integrally attached to a distal end portion of the movable handle by insert molding.   The ultrasonic treatment apparatus according to claim 1 or 2, wherein the gripping member is integrally attached to a distal end portion of the movable handle by molding by welding.

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