WO2017150147A1 - Surgical hand piece, liquid ejection device, and suction device - Google Patents
Surgical hand piece, liquid ejection device, and suction device Download PDFInfo
- Publication number
- WO2017150147A1 WO2017150147A1 PCT/JP2017/004971 JP2017004971W WO2017150147A1 WO 2017150147 A1 WO2017150147 A1 WO 2017150147A1 JP 2017004971 W JP2017004971 W JP 2017004971W WO 2017150147 A1 WO2017150147 A1 WO 2017150147A1
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- WIPO (PCT)
- Prior art keywords
- housing
- tube
- suction
- liquid
- ring member
- Prior art date
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3203—Fluid jet cutting instruments
Definitions
- the present invention relates to an operation using a liquid.
- a liquid ejecting apparatus is known as a surgical apparatus for excising a living tissue using a liquid.
- the liquid ejecting apparatus disclosed in Patent Literature 1 holds a supply pipe (ejection pipe) and a suction flow path member in a handpiece casing. Both the supply pipe and the suction flow path member are pipes through which liquid used for surgery flows.
- the supply pipe is a pipe for ejecting the liquid
- the suction flow path member is a pipe for sucking the ejected liquid.
- Patent Document 1 In the case of the liquid ejecting apparatus disclosed in Patent Document 1, the casing is formed elongated in the vicinity of the tip.
- the tip here refers to a portion where the supply pipe and the opening end of the suction flow path member are arranged.
- Patent Document 1 does not disclose a method for assembling a handpiece. That is, it does not disclose how the supply pipe or the like is held in the housing.
- a housing by coupling two housings (first housing and second housing).
- first housing and second housing After the supply pipe or the like is accommodated in the first housing, the second housing is covered with the first housing, and the first housing and the second housing can be combined to assemble.
- fastening with screws can be used.
- At least the elongated portion is not configured by only one case but the first housing and the second housing. It is preferable to be constituted by coupling of housings.
- the portion formed elongated is low in rigidity, it is preferable that the first housing and the second housing be coupled so as not to separate in the vicinity of the tip. However, it is difficult to provide a space for providing a screw hole in the elongated portion. For this reason, the configuration using two housings has been difficult to design.
- the above contents were common to the handpiece that holds either one of the supply pipe and the suction flow path member. Further, the above contents are common to a configuration in which at least one of the supply pipe and the suction flow path member protrudes through the handpiece. Further, the above contents are common to the apparatus for the operation using the liquid. Examples of such a device include a surgical device that uses ultrasonic crushing and a device that sucks liquid in a surgical procedure that uses liquid.
- the present invention has an object to solve the problem by joining the vicinity of the front end of the casing without using screws.
- the present invention is for solving the above-described problems and can be realized as the following forms.
- One aspect of the present invention includes a housing that holds at least one tube through which liquid used for surgery flows and is gripped by a user; the housing is coupled to the first housing and the first housing.
- the vicinity of the end of the housing can be coupled without using screws.
- the ring member includes a bent surface that is bent toward the outer peripheral surface on the inner peripheral surface; and the convex portion may be inserted into the bent surface. According to this embodiment, it becomes easy to avoid interference between the other member penetrating the ring member and the convex portion.
- the convex portion may have a chamfered tip surface in the insertion direction. According to this form, it becomes easy to insert the convex portion into the ring member.
- the front end surface of the convex portion may be retracted to the inner side of the housing than the front end surface of the ring member. According to this form, it is avoided that a convex part interferes with the other member arrange
- the tube may be a supply tube for supplying liquid to the excision target site.
- the liquid can be supplied for the operation using the liquid.
- the supply pipe may be for ejecting liquid intermittently. According to this embodiment, an operation can be performed using intermittent liquid ejection.
- the tube may be a suction tube for sucking a liquid. According to this form, the liquid can be sucked in the operation.
- the present invention can be realized in various forms other than the above.
- it can be realized in the form of a liquid ejecting apparatus or a suction apparatus including the handpiece.
- FIG. 1 is a schematic configuration of a liquid ejecting apparatus.
- the perspective view of a handpiece. The side view of a handpiece.
- Sectional drawing of a handpiece. Sectional drawing which expands and shows the drive part vicinity.
- the enlarged view of the connection part 10 of FIG. The figure which looked at the connection part 10 from the plus side of the X2 direction to the minus side.
- FIG. 13 is an enlarged view near the contact portion 13B shown in FIG.
- the external view of the handpiece in a disassembled state The figure which shows the state which removed the 2nd housing from the 1st housing.
- disassembly state (modification 1).
- Sectional drawing of the suction tube and handpiece in a mounting state (modification 1).
- the figure which looked at the connection part from the plus side of the X2 direction to the minus side (modification 2).
- Sectional drawing of the handpiece in the connection part vicinity (modification 2).
- FIG. 1 schematically shows the configuration of the surgical apparatus 20.
- the surgical device 20 is a medical device for realizing a surgery using a liquid.
- the surgical apparatus 20 has a function of excising the affected part (living tissue) by ejecting liquid to the affected part, and a function of sucking the ejected liquid and the excised living tissue. For this reason, the surgical apparatus 20 is a liquid ejecting apparatus and a suction apparatus.
- the surgical device 20 includes a control device 30, an actuator cable 31, a pump cable 32, a foot switch 35, a suction device 40, a suction tube 41, a liquid supply device 50, and a surgical handpiece 200 (hereinafter referred to as “surgical handpiece 200”). And handpiece 200).
- the liquid supply device 50 includes a water supply bag 51, a spike needle 52, first to fifth connectors 53a to 53e, first to fourth water supply tubes 54a to 54d, a pump tube 55, a blockage detection mechanism 56, A filter 57 and a tube pump 60 are provided.
- the handpiece 200 includes a supply pipe 205 and a suction pipe 400.
- the water supply bag 51 is made of a transparent synthetic resin, and is filled with a liquid (specifically, physiological saline). In addition, in this application, even if it fills with liquids other than water, it calls the water supply bag 51.
- FIG. The spike needle 52 is connected to the first water supply tube 54a via the first connector 53a. When the spike needle 52 is stabbed into the water supply bag 51, the liquid filled in the water supply bag 51 can be supplied to the first water supply tube 54a.
- the first water supply tube 54a is connected to the pump tube 55 via the second connector 53b.
- the pump tube 55 is connected to the second water supply tube 54b via the third connector 53c.
- the tube pump 60 sandwiches the pump tube 55 between the stator 60a and the rotor 60b.
- the tube pump 60 handles the pump tube 55 by rotating a plurality of rollers on the rotor by rotation of a built-in motor (supply motor 62). By being handled in this way, the liquid in the pump tube 55 is sent out from the first water supply tube 54a side to the second water supply tube 54b side. Note that rotating the supply motor 62 is referred to as “driving the tube pump 60”.
- the blockage detection mechanism 56 detects the blockage of the flow paths in the second to fourth water supply tubes 54b to 54d and the handpiece 200 by measuring the pressure in the second water supply tube 54b. When detecting the blockage, the blockage detection mechanism 56 inputs the detection result to the control device 30.
- the second water supply tube 54b is connected to the third water supply tube 54c via the fourth connector 53d.
- a filter 57 is connected to the third water supply tube 54c. The filter 57 collects foreign matters contained in the liquid.
- the third water supply tube 54c is connected to the fourth water supply tube 54d via the fifth connector 53e.
- the fourth water supply tube 54d is connected to the handpiece 200.
- the liquid supplied to the handpiece 200 through the fourth water supply tube 54d is intermittently ejected from the nozzle 207 provided at the tip of the supply pipe 205 by the drive of the drive unit 300 (FIGS. 4 and 5). In this way, the liquid is intermittently ejected, so that the resecting capability can be secured with a small flow rate.
- the supply tube 205 is a tube for supplying a liquid for excising the living tissue to the excision target site. Since the supply pipe 205 is for injecting liquid, it is also called an injection pipe.
- the supply pipe 205 can also be said to be a pipe through which a liquid used for surgery flows.
- the suction tube 41 is connected to the handpiece 200.
- the suction device 40 sucks the inside of the suction tube 400 through the suction tube 41. By this suction, liquid near the tip of the suction tube 400, a cut piece, and the like are sucked.
- the suction tube 400 is a tube through which a liquid used for surgery flows, like the supply tube 205.
- the control device 30 includes a CPU (Central Processing Unit) and a storage medium.
- a program for controlling the tube pump 60 and the piezoelectric element 360 (see FIG. 5) is stored in the storage medium.
- the control device 30 transmits the first drive signal via the actuator cable 31 and the second drive via the pump cable 32 while the foot switch 35 is depressed by the CPU executing this program. Send a signal.
- the first drive signal has a periodicity of 400 Hz and drives the drive unit 300.
- the second drive signal drives the tube pump 60. Therefore, the liquid is intermittently ejected while the user steps on the foot switch 35, and the liquid ejection stops while the user does not step on the foot switch 35.
- FIG. 2 shows a perspective view of the handpiece 200.
- FIG. 3 shows a side view of the handpiece 200.
- the handpiece 200 includes a supply pipe 205, a casing 210, screws 221, 222, and 223, a suction pipe 400, and a suction force adjustment mechanism 500.
- the housing 210 is a member held by the user.
- the housing 210 is formed by coupling the first housing 210a and the second housing 210b. Since the supply pipe 205 is made of metal, it is conductive.
- the casing 210 and the suction tube 400 are made of hard resin.
- the first is the X1-Y-Z1 coordinate system.
- the second is the X2-YZ2 coordinate system.
- the Y direction common to the two coordinate systems is a direction orthogonal to the boundary line between the first housing 210a and the second housing 210b, and the direction from the first housing 210a to the second housing 210b is a positive direction.
- the boundary line here is a line appearing on the surface of the housing 210 as shown in FIG. However, in the definition of the Y direction, the boundary line near the connecting portion 10 is excluded.
- the connection unit 10 will be described later with reference to FIG.
- the X1 direction is a direction parallel to a predetermined straight line included in the boundary line, and the direction toward the opening end of the suction tube 400 is a positive direction.
- the predetermined straight line is a straight line appearing on both sides of the suction force adjusting mechanism 500.
- the Z1 direction is defined by the right hand system from the X1 direction and the Y direction.
- the X2 direction is the longitudinal direction of the suction tube 400, and the direction of the suction tube 400 toward the open end is a positive direction.
- the Z2 direction is defined by the right hand system from the X2 direction and the Y direction.
- the angle between the X1 direction and the X2 direction is 20 degrees in the present embodiment.
- the second housing 210b is fixed to the first housing 210a by fastening screws 221, 222, and 223.
- the screw 223 is positioned closest to the minus side in the X1 direction.
- the position of the screw 223 is disposed in the vicinity of the end of the housing 210 on the minus side in the X1 direction.
- the second housing 210b is firmly fixed to the first housing 210a in the vicinity of the end of the housing 210 on the minus side in the X1 direction.
- the screw 221 is located closest to the X1 direction plus side.
- the position of the screw 221 is closer to the minus side in the X1 direction than the end of the housing 210 on the plus side in the X1 direction, that is, the vicinity of the connecting portion 10. This is because the housing 210 is designed to be narrower on the plus side in the X1 direction than the screw 221.
- the second housing 210b is firmly fixed to the first housing 210a on the plus side in the X1 direction from the screw 221 (described later with reference to FIGS. 14 and 15).
- FIG. 4 shows a cross-sectional view of the handpiece 200. Inside the casing 210, screw holes 221a, 222a, 223a, an inlet channel 241, an insulating member 270 (described later with reference to FIG. 6), and a driving unit 300 are provided.
- the mating surface of the first housing 210a is a surface orthogonal to the Y direction and is a surface that comes into contact with the second housing 210b when assembled as the housing 210.
- a region shown as a ring member 280 (described later) shown in the enlarged view surrounded by a circle is not a mating surface but a cut surface of the ring member 280.
- the supply pipe 205 and the suction pipe 400 pass through the ring member 280.
- the fourth water supply tube 54d is bent in a U shape inside the casing 210 and connected to the inlet channel 241.
- the inlet channel 241 communicates with the supply pipe 205 via the liquid chamber 240 (see FIG. 6).
- the channel diameter of the inlet channel 241 is smaller than the channel diameter of the supply pipe 205. For this reason, even if the pressure in the liquid chamber 240 fluctuates (described later), the liquid in the liquid chamber 240 is prevented from flowing back into the inlet channel 241.
- the housing 210 includes a ring member 280.
- the insertion portion 405 that is a part of the suction tube 400 is fitted to the ring member 280 (described later with reference to FIGS. 12 and 13), and the flange 410 that is a part of the suction tube 400 is the first. It implement
- the flow path in the attached suction pipe 400 communicates with the suction flow path member 230.
- the suction channel member 230 is softer than the supply pipe 205 and is made of a soft resin.
- the suction flow path member 230 is connected to the suction tube 41 via the suction force adjustment mechanism 500.
- the suction force adjusting mechanism 500 is provided with a suction channel member 510 that connects the suction channel member 230 and the suction tube 41, and a hole 522 that communicates with the channel in the suction channel member 510.
- the user can adjust the suction force by the suction pipe 400 using the hole 522. Specifically, if the area where the hole 522 is opened is reduced, the flow rate of air flowing in from the hole 522 is also reduced, so that the flow rate of fluid (air, liquid, etc.) sucked through the suction pipe 400 is reduced. growing. That is, the suction force by the suction pipe 400 is increased.
- the suction force by the suction pipe 400 is reduced.
- the user adjusts the open area of the hole 522 by adjusting the area where the hole 522 is closed by the thumb.
- the shape of the hole 522 is designed so that the suction force by the suction pipe 400 becomes minute or no suction force acts.
- the flow area of the suction pipe 400 is larger than the opening area of the hole 522, the flow resistance of the suction pipe 400 is reduced by sufficiently increasing the length of the suction pipe 400. Is bigger than. In this way, when the hole 522 is not covered at all, the suction force by the suction tube 400 can be made minute.
- the screw holes 221a, 222a, and 223a are provided in the first housing 210a. Screws 221, 222, 223 are screwed into the screw holes 221a, 222a, 223a.
- the screw 222 passes through a hole 255 (see FIG. 5) provided in the flow path connecting member 250 of the driving unit 300 and is inserted into the screw hole 222a.
- FIG. 5 is an enlarged sectional view showing the vicinity of the driving unit 300.
- the drive unit 300 includes a flow path connecting member 250, a diaphragm 260, a cylindrical member 351, a fixing member 353, a piezoelectric element 360, and a piston 362.
- Piezoelectric element 360 is a laminated piezoelectric element.
- the piezoelectric element 360 is disposed in the cylindrical member 351 so that the extending and contracting direction is along the X1 direction.
- the fixing member 353 is fixed to one end of the cylindrical member 351. Specifically, the fixing member 353 is fixed to one end of the cylindrical member 351 by fastening the male screw 353 a provided on the outer periphery of the fixing member 353 to the female screw 351 b provided on the inner periphery of the cylindrical member 351. Has been.
- the piezoelectric element 360 is fixed to the fixing member 353 with an adhesive.
- the first cable 31 a and the second cable 31 b that constitute the actuator cable 31 pass through a through hole provided in the fixing member 353 and are electrically connected to the piezoelectric element 360.
- the material of the diaphragm 260 is a metal, specifically stainless steel, and more specifically SUS304 or SUS316L.
- the diaphragm 260 is formed thicker (for example, 300 ⁇ m) in order to perform preloading (preloading) of the piezoelectric element 360.
- the diaphragm 260 is disposed so as to cover the other end of the cylindrical member 351, and is fixed to the cylindrical member 351 by welding.
- the piston 362 is fixed to one end of the piezoelectric element 360 with an adhesive and is disposed so as to contact the diaphragm 260.
- the piston 362 has a shape in which cylinders having different diameters are stacked as concentric circles. The smaller diameter is in contact with the diaphragm 260. For this reason, the diaphragm 260 is not pushed toward the end, and a large force does not act on the welded portion.
- the piston 362 and the diaphragm 260 are not fixed by an adhesive or the like, but are only in contact with each other.
- a male screw 351a is provided on the outer periphery of the cylindrical member 351.
- the cylindrical member 351 is fixed to the flow path connecting member 250 by tightening the male screw 351 a to the female screw 253 provided in the flow path connecting member 250.
- the piezoelectric element 360 expands and contracts according to a drive signal input via the actuator cable 31.
- the piston 362 vibrates in the longitudinal direction (X1 direction) of the piezoelectric element 360.
- the diaphragm 260 is deformed following the vibration. Note that expanding and contracting the piezoelectric element 360 by the drive signal is referred to as driving the drive unit 300.
- FIG. 6 shows an enlarged cross section near the diaphragm 260.
- the channel connection member 250 is provided with a recess 244.
- the recess 244 is a thin and circularly recessed portion in the flow path connecting member 250.
- the liquid chamber 240 is formed by covering the recess 244 with the diaphragm 260. The liquid chamber 240 formed in this way can communicate with the supply pipe 205 for ejecting liquid.
- the volume of the liquid chamber 240 changes. Due to this variation, the pressure of the liquid filled in the liquid chamber 240 varies. When the pressure in the liquid chamber 240 decreases, the liquid flows into the liquid chamber 240 from the inlet channel 241. When the pressure in the liquid chamber 240 increases, the liquid flows out from the liquid chamber 240 to the supply pipe 205. The liquid flows in such a direction because the flow path diameter of the inlet flow path 241 is smaller than the flow path diameter of the supply pipe 205 as described above.
- the liquid that has flowed out to the supply pipe 205 is ejected from the tip of the supply pipe 205. Since the pressure in the liquid chamber 240 rises intermittently, the liquid is ejected from the supply pipe 205 intermittently.
- FIG. 7 is an enlarged cross-sectional view of a portion where the supply pipe 205 and the suction flow path member 230 are branched.
- a hole 233 b is opened in the wall of the suction flow path member 230.
- the supply pipe 205 is disposed so as to penetrate the hole 233b.
- a part of the supply pipe 205 forms a double pipe with a part of the suction flow path member 230.
- a portion of the supply pipe 205 that is on the minus side in the X1 direction from the hole 233b, that is, a portion branched from the suction flow path member 230 is referred to as a branched portion 205a1. Since the supply pipe 205 includes the inner pipe portion 205b1, it is also referred to as an inner pipe member.
- the supply pipe 205 can also be divided into a rear end side 205a2 and a front end side 205b2.
- the rear end side 205a2 is a part extending in the X1 direction in the supply pipe 205.
- the distal end side 205b2 is a portion extending in the X2 direction in the supply pipe 205.
- the front end side 205b2 is located on the plus side in the X1 direction and on the plus side in the X2 direction with respect to the rear end side 205a2.
- the supply pipe 205 has a portion that is the inner pipe portion 205b1 and the rear end side 205a2.
- the suction channel member 230 can also be divided into a rear end side 231 and a front end side 232.
- the distal end side 232 is a part extending in the X2 direction.
- the rear end side 231 is a part extending in the X1 direction.
- the front end side 232 is located on the X1 direction plus side and the X2 direction plus side with respect to the rear end side 231.
- a part of the suction channel member 230 forms a double tube with the inner tube portion 205b1, and is also referred to as an outer tube member.
- the suction flow path member 230 includes a holding portion 233.
- the holding part 233 is a tubular member branched from the main part that functions as the flow path of the suction flow path member 230.
- the wall of the holding portion 233 is connected to the distal end side 232 so as to surround the hole 233b.
- the holding part 233 is integrally formed with the suction flow path member 230 by resin molding. Since the suction flow path member 230 and the holding portion 233 are made of a soft resin, the holding portion 233 is an elastic member.
- the holding portion 233 extends straight from the periphery of the hole 233b toward the X1 direction minus side, and an open end 233a is provided as an end portion on the X1 direction minus side.
- An insulating member 270 is disposed between the branch portion 205a1 and the holding portion 233. Since the insulating member 270 is made of high-density polyethylene, it is insulative.
- the insulating member 270 is a tubular member that forms a triple tube structure together with the holding portion 233 and the branch portion 205a1.
- the insulating member 270 corresponds to the second tube from the outside (that is, the second tube from the inside) in the triple tube.
- the insulating member 270 is disposed in the holding portion 233 by being inserted from the open end 233a of the holding portion 233.
- the insulating member 270 is longer than the holding part 233. Therefore, a part of the insulating member 270 protrudes further to the minus side in the X1 direction than the holding portion 233.
- the end portion 271 on the minus side in the X1 direction of the insulating member 270 is located on the minus side in the X1 direction with respect to the portion intersecting the fourth water supply tube 54d.
- the end portion 271 has a longer distance from the housing 210 than a portion such as the open end 233a. For this reason, the influence of electricity as noise on the piezoelectric element 360 through the casing 210 and the supply pipe 205 is suppressed.
- the branch portion 205a1 and the insulating member 270 are in an interference fit dimension relationship.
- the insulating member 270 and the holding portion 233 have an interference fit dimension relationship.
- the branch portion 205a1 is held by the holding portion 233 via the insulating member 270. That is, the holding unit 233 is a member for holding the supply pipe 205.
- the holding portion 233 is sufficiently lower in rigidity than the insulating member 270. Therefore, when the insulating member 270 is inserted, the holding portion 233 is deformed more greatly than the insulating member 270.
- the deformation in the radial direction of the holding portion 233 is about 20% of the wall thickness of the holding portion 233.
- the branch portion 205a1 and the insulating member 270 are in a close-fitting dimension relationship, the space between the branch portion 205a1 and the insulating member 270 is sealed.
- the insulating member 270 and the holding portion 233 are in a close-fitting dimensional relationship, the insulating member 270 and the holding portion 233 are sealed. Therefore, the fluid hardly leaks from the gap between the hole 233b and the rear end side 205a2.
- the holding portion 233 holds the branch portion 205a1, so that the holding portion 233 and the branch portion 205a1 are maintained in a substantially parallel state.
- the angle ⁇ 1 formed by the front end side 232 and the holding portion 233 is substantially equal to the angle ⁇ 2 formed by the rear end side 205a2 and the front end side 205b2.
- the front end side 205b2 is held substantially parallel to the front end side 232.
- the angle ⁇ 1 and the angle ⁇ 2 are designed to be 160 degrees.
- the branch portion 205a1 is held by the holding portion 233, which is an elastic member, so that the vibration of the supply pipe 205 is absorbed by the holding portion 233.
- the supply pipe 205 vibrates due to driving of the piezoelectric element 360 and a force received from the nozzle 207.
- the screw hole 221a is disposed on the minus side of the hole 233b in the X1 direction, and is disposed between the branch portion 205a1 and the suction flow path member 230 in the Z1 direction.
- the casing 210 is designed to be narrower in a range in which the distal end side 232 can be accommodated on the plus side in the X2 direction than the inner tube portion 205b1.
- FIG. 8 is a perspective view showing the handpiece 200 with the suction tube 400 removed from the housing 210.
- this state is referred to as a disassembled state.
- a state in which the suction tube 400 is attached is referred to as an attached state.
- the suction tube 400 is formed so that it can be attached to and detached from the housing 210 (can be removed or attached) by the user manually.
- the user may use the handpiece 200 in a disassembled state depending on the state of the surgical site and the use state of the apparatus.
- the surgical device 20 is not used as a suction device in the disassembled state.
- the structure for attaching and detaching will be described below.
- FIG. 9 is a cross-sectional view of the suction tube 400.
- the suction tube 400 includes an insertion portion 405, a flange 410, and a main portion 420.
- the insertion portion 405 is a portion that is inserted into the ring member 280.
- the distal end surface of the insertion portion 405 is chamfered as shown in FIG. This chamfering facilitates the operation of inserting the insertion portion 405 into the ring member 280.
- the flange 410 is a part having an outer diameter larger than that of the insertion portion 405.
- FIG. 10 is an enlarged view of the connecting portion 10 of FIG.
- FIG. 11 is a view of the connecting portion 10 as viewed from the plus side in the X2 direction to the minus side.
- the outlines of the first housing 210a and the second housing 210b are substantially symmetrical with each other. However, in the connection part 10, the outlines of the first housing 210a and the second housing 210b are asymmetric.
- the first housing 210a includes the ring member 280 described with reference to FIG.
- the ring member 280 includes a front end surface 281, an R portion 282, an arc surface 283, two planes 284, and a curled surface 285.
- the front end surface 281 is a plane parallel to the YZ2 plane, and is the portion that is positioned most on the X2 direction plus side in the ring member 280.
- the R portion 282 is an R portion that connects the front end surface 281 and the outer peripheral surface of the ring member 280.
- the circular arc surface 283, the two flat surfaces 284, and the rounded surface 285 form an inner peripheral surface 288 of the through hole 289.
- the arc surface 283 is a portion where the shape projected onto the YZ2 plane becomes an arc.
- the curled surface 285 is a portion that is curled radially outward from the arc surface 283 so that the ring member 280 is thin.
- the two planes 284 are planes that connect the arcuate surface 283 and the curved surface 285.
- the second housing 210b includes a convex portion 290.
- the convex portion 290 is disposed so as to fill a portion that is curled by the curled surface 285.
- the convex portion 290 will be described in detail with reference to FIGS.
- FIG. 12 is a view for explaining the fitting between the inner peripheral surface 288 and the insertion portion 405 of the suction pipe 400.
- FIG. 13 is an enlarged view of the vicinity of the contact portion 13B shown in FIG.
- the inner peripheral surface 288, the insertion portion 405, and the convex portion 290 are treated as two-dimensional lines projected onto the YZ2 plane. 12 and 13 show only the outer peripheral surface of the insertion portion 405 and the convex portion 290.
- FIG. 12 is a view for explaining the fitting between the inner peripheral surface 288 and the insertion portion 405 of the suction pipe 400.
- FIG. 13 is an enlarged view of the vicinity of the contact portion 13B shown in FIG.
- the inner peripheral surface 288, the insertion portion 405, and the convex portion 290 are treated as two-dimensional lines projected onto the YZ2 plane. 12 and 13 show only the outer peripheral surface of the insertion portion 405 and the convex portion 290.
- the insertion portion 405 is disposed so that the point K overlaps the inner peripheral surface 288 and the symmetry axis O overlaps.
- the point K is a point defined with respect to each of the insertion portion 405 and the inner peripheral surface 288 as a point located on the most negative side in the Y direction on the YZ2 plane.
- the symmetry axis O is a straight line parallel to the Y direction, and is a straight line passing through the point K, the arc surface 283 and the center of the insertion portion 405.
- the inner diameter of the circular arc surface 283 is an inner diameter d3.
- the outer diameter of the insertion portion 405 is an outer diameter D2 as shown in FIGS.
- the virtual inscribed circle V has a diameter D1.
- the virtual inscribed circle V is a virtual circle that passes through the point K and touches each of the two planes 284.
- the plane 284 corresponds to a circular chord including the arc surface 283. Therefore, the inner diameter d3 is larger than the diameter D1.
- the outer diameter D2 is designed to be smaller than the inner diameter d3 and larger than the diameter D1. For this reason, as shown in FIGS. 12 and 13, a part of the plane 284 overlaps with the insertion portion 405. The overlapping parts are indicated by hatching in FIG.
- the insertion portion 405 when the insertion portion 405 is inserted into the inner peripheral surface 288, at least the portions indicated by hatching in the insertion portion 405 and the inner peripheral surface 288 are elastically deformed.
- the insertion portion 405 receives a force in the Y direction minus direction as a resultant force from the two planes 284. This resultant force acts near the portion 13A.
- the insertion portion 405 when the insertion portion 405 is inserted into the through-hole 289, it receives a surface pressure from the inner peripheral surface 288 in the vicinity of the portions 13A, 13B, and 13C.
- the insertion portion 405 is held on the inner peripheral surface 288 by the frictional force accompanying the surface pressure.
- the virtual inscribed circle V is in contact with the inner peripheral surface 288 at three points. Since the shape of the circle is determined when three points are determined, the position and diameter D1 of the virtual inscribed circle V are stable even if dimensional tolerances are taken into consideration. Unlike this embodiment, if the virtual inscribed circle V is designed to be in contact with the inner peripheral surface 288 at 4 points or more, the contact points may be reduced in an actual product in consideration of dimensional tolerances and the like. obtain. When the number of contact points with the virtual inscribed circle V varies, the contact state with the insertion portion 405 becomes unstable. In the present embodiment, such a phenomenon is avoided by the virtual inscribed circle V being in contact with the inner peripheral surface 288 at three points. As a result, the above-described frictional force is stabilized, so that it is possible to realize a design in which the suction tube 400 is stably held in the mounted state and the suction tube 400 can be easily attached and detached.
- the provision of the bent surface 285 ensures the deformability (spring property) of the inner peripheral surface.
- the provision of the rounded surface 285 makes it easier for the through-hole 289 to expand due to the force received by the flat surface 284 when the insertion portion 405 is inserted. For this reason, excessive force is not generated when the insertion portion 405 is inserted into the through-hole 289, which facilitates insertion.
- the insertion portion 405 can be inserted into the ring member 280 without the insertion portion 405 interfering with the convex portion 290.
- FIG. 14 shows the appearance of the handpiece 200 in the disassembled state. Since the convex part 290 is not visible in the arrow view of FIG. 14, it is indicated by a broken line.
- the front end surface 291 (see FIG. 16) of the convex portion 290 is positioned on the minus side in the X2 direction by the clearance C1 from the front end surface 281 of the ring member 280. That is, with respect to the X2 direction, the front end surface 291 of the convex portion 290 is retracted closer to the inner side of the housing 210 than the front end surface 281 of the ring member 280. For this reason, the convex part 290 does not interfere with the flange 410 in the mounted state.
- FIG. 15 shows a state in which the second housing 210b is removed from the first housing 210a.
- the second housing 210b can be removed from the first housing 210a by removing the screws 221, 222, and 223. Conversely, the second housing 210b is aligned with the first housing 210a, and the screws 221, 222, and 223 are inserted into holes 221b, 222b (not shown) and 223c (not shown) provided in the second housing 210b. If tightened through, it can be attached to the first housing 210a.
- the operation of removing the second housing 210b as described above includes a step of pulling the convex portion 290 from the ring member 280 to the X2 direction minus side.
- the operation of attaching the second housing 210b includes a step of inserting the convex portion 290 into the ring member 280 on the plus side in the X2 direction.
- the protrusion 290 inserted into the ring member 280 as described above prevents the first housing 210a and the second housing 210b from separating in the Y direction on the plus side in the X2 direction with respect to the screw 221. For this reason, the first housing 210a and the second housing 210b can be firmly coupled without fastening the vicinity of the tip of the housing 210 with a screw.
- the tip here refers to the end on the plus side in the X1 direction and the end on the plus side in the X2 direction.
- the suction flow path member 230 includes a head 235 (described later together with FIG. 19) at the end on the plus side of the X2 direction.
- a head 235 (described later together with FIG. 19) at the end on the plus side of the X2 direction.
- half of the head 235 is accommodated in the accommodation space Sa (described later with reference to FIG. 19).
- the half of the head 235 here is a portion located on the minus side in the Y direction in the head 235 divided in half by the Z2-X2 plane.
- the second housing 210b is provided with an accommodation space Sb.
- the head 235 is accommodated in the accommodating space S formed by the accommodating space Sa and the accommodating space Sb (see FIG. 20).
- FIG. 16 and 17 are perspective views showing the second housing 210b in the vicinity of the convex portion 290.
- the convex portion 290 includes a tip surface 291, a slope 292, an outer peripheral surface 293, and an inner peripheral surface 294.
- the outer peripheral surface 293 and the inner peripheral surface 294 are shaped so as to be fitted on the rounded surface 285.
- the outer peripheral surface 293 is configured by five planes.
- the inner peripheral surface 294 is configured by an arc surface.
- the front end surface 291 is a portion that is located closest to the X2 direction plus side in the second housing 210b.
- the inclined surface 292 is a portion formed by chamfering the tip surface 291 and each surface constituting the outer peripheral surface 293. By forming the inclined surface 292, it becomes easy to insert the convex portion 290 into the twisted surface 285.
- the second housing 210b is formed with a stopper 211b, a small diameter portion 212b, a large diameter portion 213b, and a wall 214b.
- the stopper 211b, the small diameter part 212b, the large diameter part 213b, and the wall 214b form part of the boundary surface of the accommodation space Sb described with reference to FIG.
- the accommodation space Sb is a space that is partitioned by virtually closing a through hole opened in the stopper 211b and the wall 214b.
- FIG. 18 is a perspective view of the first housing 210a in the vicinity of the ring member 280.
- the first housing 210a is formed with a stopper 211a, a small diameter portion 212a, a large diameter portion 213a, and a wall 214a.
- the stopper 211a, the small diameter part 212a, the large diameter part 213a, and the wall 214a each form part of the boundary of the accommodation space Sa described with reference to FIG.
- the accommodation space Sa is a space that is partitioned by virtually closing a through hole opened in the stopper 211a and the wall 214a.
- FIG. 19 shows a state where the suction flow path member 230 is removed from the first housing 210a and the supply pipe 205 penetrates the ring member 280.
- the suction channel member 230 includes a head 235.
- the head 235 is formed on the most positive side in the X2 direction of the suction flow path member 230, that is, on the most positive side in the X2 direction on the distal end side 232, and has an outer diameter larger than other portions of the suction flow path member 230.
- the outer diameter of the head 235 is larger than the inner diameter of the stopper 211a and smaller than the inner diameters of the small diameter portion 212a and the large diameter portion 213a.
- the suction flow path member 230 When attaching the suction flow path member 230 to the first housing 210a, the suction flow path member 230 is moved closer to the ring member 280, and half of the head 235 is stored in the storage space Sa. By doing so, the movement of the head 235 to the X2 direction plus side is restricted by the wall 214a. Further, the movement of the head 235 to the minus side in the X2 direction is restricted by the stopper 211a. Furthermore, the movement of the head 235 in the Y direction minus side or the Z2 direction is restricted by the small diameter portion 212a and the large diameter portion 213a.
- the second housing 210b having the same structure By fixing the second housing 210b having the same structure to the first housing 210a, the movement of the head 235 to the plus side in the Y direction is restricted by the small diameter portion 212b and the large diameter portion 213b. As a result, the head 235 is held in the accommodation space S.
- FIG. 20 is a cross-sectional view of the handpiece 200 and the suction tube 400 in an exploded state.
- FIG. 21 is a cross-sectional view of the handpiece 200 in the mounted state. The seal between the suction pipe 400 and the suction flow path member 230 will be described with reference to FIGS.
- the head portion 235 includes a seal portion 235A.
- the seal portion 235A is a portion that rises from the inner wall of the head 235 toward the insertion portion 405 in the mounted state. That is, the seal portion 235 ⁇ / b> A is a portion that rises from the inner wall of the head 235 toward the central axis of the head 235.
- the inner diameter of the narrowest part of the seal portion 235A is an inner diameter d4.
- the seal portion 235A is located on the plus side of the center of the head 235 in the X2 direction. For this reason, the seal portion 235A is disposed within the range of the large diameter portions 213a and 213b in the X2 direction.
- the inner diameter of the most spread part is the inner diameter d5.
- the inner diameter d5 is larger than the outer diameter D2 of the insertion portion 405.
- the reason why the large-diameter portion 213a and the large-diameter portion 213b are provided is to prevent the deformation from being hindered by the contact between the head 235 and the housing 210. For this reason, the position of the seal portion 235A in the X direction (insertion direction) is included in the range of the large diameter portion 213a and the large diameter portion 213b in the X2 direction.
- the small-diameter portion 212a and the small-diameter portion 212b are provided in order to stabilize the radial position of the head 235 and to suppress the head 235 from excessively expanding in the radial direction in the mounted state. It is.
- the user can correctly mount the suction pipe 400 by pushing the suction pipe 400 until the flange 410 contacts the ring member 280.
- the outer peripheral surface of the insertion portion 405 contacts only the seal portion 235A. Therefore, the contact area between the insertion portion 405 and the head portion 235 is constant and hardly changes depending on the depth of the push-in. For this reason, the frictional force between the insertion portion 405 and the head 235 hardly changes depending on the depth of the pushing. For this reason, poor mounting is unlikely to occur.
- the mounting failure means that the depth of the above-mentioned pressing increases, the pressing force increases, and the user stops the pressing before the flange 410 contacts the ring member 280.
- the inner diameter of the suction tube 400 is an inner diameter d6.
- the inner diameter of the suction channel member 230 is an inner diameter d7.
- the inner diameter d7 is larger than the inner diameter d6. That is, the flow path diameter of the suction flow path member 230 is larger than the flow path diameter of the suction pipe 400. For this reason, it is suppressed that the solid substance etc. which have flowed through the suction pipe 400 flow into the suction flow path member 230, and the flow as suction becomes smooth.
- the present invention is not limited to the embodiments, examples, and modifications of the present specification, and can be realized with various configurations without departing from the spirit of the present invention.
- the technical features in the embodiments, examples, and modifications corresponding to the technical features in the embodiments described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects described above, replacement or combination can be performed as appropriate. If the technical feature is not described as essential in this specification, it can be deleted as appropriate. For example, the following are exemplified.
- FIG. 22 shows a cross section of the suction tube 400a and the handpiece 200 in a disassembled state.
- the suction tube 400a is used instead of the suction tube 400 of the embodiment.
- the handpiece 200 is the same as that in the embodiment.
- the suction tube 400a includes a recess 405a in the insertion portion 405.
- the recess 405a is an annular recess provided on the outer periphery of the insertion portion 405.
- the cross section of the recess 405a has an arc shape.
- FIG. 23 shows a cross section of the suction tube 400a and the handpiece 200 in the mounted state.
- the seal portion 235A fits into the recess 405a when the insertion portion 405 is inserted to the correct position. For this reason, the user feels a click feeling when the insertion of the insertion portion 405 is performed to the correct position. Therefore, the user can easily determine by tactile sense that the suction tube 400a has been correctly attached.
- FIG. 24 is a diagram of the connection unit 10 as viewed from the plus side in the X2 direction to the minus side.
- FIG. 25 is a cross-sectional view of the handpiece 200b in the vicinity of the connecting portion 10.
- the hand piece 200b is used instead of the hand piece 200 of the embodiment.
- the handpiece 200b includes a first housing 200c and a second housing 200d.
- the first housing 200c includes a ring member 280b.
- the ring member 280b includes a stepped portion 287.
- the step portion 287 is a part of the bent surface 285. As shown in FIG. 25, the step portion 287 is a portion that forms a step on the rounded surface 285, and forms a plane parallel to the YZ2 plane.
- the second housing 200d includes a convex portion 290b.
- the convex part 290 b includes a claw part 299.
- claw part is a site
- the claw portion 299 is caught by the step portion 287 in a state where the first housing 210c and the second housing 200d are coupled. For this reason, even if the screws 221, 222, and 223 are loosened, the possibility that the first housing 210c and the second housing 200d are separated is reduced.
- a configuration may be used in which the liquid is ejected by irradiating an electromagnetic wave such as an optical maser or laser or heating the liquid with a heater or the like.
- the surgical device 20 may be, for example, a device for crushing a living tissue using ultrasonic waves as a device for performing a surgery using a liquid. Even in such a surgical apparatus, a configuration similar to that described in the embodiment may be adopted for supplying liquid from the supply tube 205 and sucking the liquid or excised living tissue from the suction tube 400. Good.
- the shape of the ring member 280 and the insertion portion 405 may be changed while maintaining that the suction tube 400 is detachable from the housing 210.
- the virtual inscribed circle V may contact the through hole 289 of the ring member 280 at four or more points.
- the convex portion 290 is arranged in the drooping surface 285.
- the crease surface 285 may not be provided.
- the convex portion may contact the insertion portion 405 in the mounted state.
- the distal end surface of the insertion portion 405 may not be chamfered.
- the suction tube 400 may not include the flange 410. Even if the flange 410 is not provided, the suction tube 400 can be correctly mounted by pushing until the distal end surface of the insertion portion 405 contacts the head 235.
- the tip surface 291 of the convex portion 290 may not be chamfered.
- the front end surface 291 of the convex portion 290 may protrude outward from the front end surface 281 of the ring member 280.
- the ring member 280 and the convex portion 290 may be eliminated, and the shape of the first housing 210a and the second housing 210b may be formed symmetrically in the connection portion 10.
- the first housing 210a may be shaped like the ring member 280 is cut away, or the second housing 210b may be shaped like the raised portion 290 is cut away.
- ring-shaped separate members may be put on the end portions of the first housing 210a and the second housing 210b.
- the supply pipe 205 may not penetrate the ring member 280.
- the nozzle 207 that is the end of the supply pipe 205 may be disposed inside the ring member 280.
- the handpiece 200 may not include the supply pipe 205.
- the surgical device 20 may be used as a suction device.
- the supply pipe 205 may be an outer pipe member and the suction flow path member 230 may be an inner pipe member.
- the angle formed between the holding portion 233 and the outer tube member may not be equal to the angle formed between the front end side 205b2 and the rear end side 205a2.
- the inner tube member may be formed of an insulating material.
- the insulating member 270 may be omitted.
- the interference fit between the insertion portion 405 and the head 235 may be a fit with the suction channel 400 as a hole and the suction tube 400 as a hole.
- the seal portion 235 ⁇ / b> A provided on the head 235 may be provided on the outer peripheral surface of the head 235.
- a seal portion may be provided in the insertion portion 405.
- the seal portion provided in the insertion portion 405 is a portion that rises toward the head portion 235 that is an interference fitting counterpart member. That is, this seal portion is provided on the outer peripheral surface of the insertion portion 405 when the insertion portion 405 is an interference fit shaft as in the embodiment, and unlike the embodiment, the insertion portion 405 becomes an interference fit hole. In the case, it is provided on the inner peripheral surface of the insertion portion 405.
- the seal portion may be provided on the outer peripheral surface of the insertion portion 405.
- the head 235 may not be accommodated in the accommodation space S.
- the head 235 may be disposed outside the ring member 280.
- the configuration in which the liquid is intermittently ejected is employed, but a configuration having a function of ejecting the liquid continuously may be employed.
- the structure which can selectively use intermittent injection and continuous injection may be sufficient.
- only the tube pump may be driven in a state where the drive of the drive unit is stopped or lowered.
- intermittent spraying may be performed for excision and continuous spraying may be performed for cleaning.
- the structure which can implement only continuous injection may be sufficient.
- the ablation may be performed by continuous injection.
- the liquid to be ejected may be pure water or a chemical solution.
- some or all of the functions and processes realized by software may be realized by hardware.
- some or all of the functions and processes realized by hardware may be realized by software.
- the hardware for example, various circuits such as an integrated circuit, a discrete circuit, or a circuit module obtained by combining these circuits can be used.
- Supply motor 200 ... Handpiece, 200b ... Handpiece, 200c
- First housing 200d ... second housing, 205 ... supply pipe, 205a1 ... branch part, 205a2 ... rear end side, 205b1 ... inner pipe part, 205b2 ... front end side, 207 ... nozzle, 210 ... housing, 210a ... first Housing 210b 2nd housing 210c 1st housing 211a Stopper 211b Stopper 212a Small diameter 212b Small diameter 213a Large diameter 213b Large diameter 214a Wall 214b Walls, 221... Screws, 221a .. screw holes, 222... Screws, 222a... Screw holes, 223. Part, 233a ... open end, 233b ...
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Abstract
The present invention addresses the problem of providing a surgical hand piece wherein a portion near the front end of a housing can be joined without using a screw. The present invention provides a surgical hand piece provided with a housing which holds at least one tube (205) for allowing liquid utilized for surgery to flow therethrough and which is adapted to be gripped by a user. The housing is provided with a first housing (210a) and a second housing (210b) which is joined to the first housing (210a). The first housing (210a) has provided at an end thereof a ring member (280) through which the tube extends or in which an end of the tube is disposed. The second housing (210b) has provided at an end thereof a protrusion (290) having been inserted in the ring member (280).
Description
本発明は、液体を利用した手術に関する。
The present invention relates to an operation using a liquid.
液体を利用して生体組織を切除するための手術装置として、液体噴射装置が知られている。特許文献1に開示された液体噴射装置は、ハンドピースの筐体に、供給管(噴射管)と吸引流路部材とを保持する。供給管および吸引流路部材は、何れも手術に利用される液体が流れる管である。具体的には、供給管は液体を噴射するための管であり、吸引流路部材は噴射された液体を吸引するための管である。
A liquid ejecting apparatus is known as a surgical apparatus for excising a living tissue using a liquid. The liquid ejecting apparatus disclosed in Patent Literature 1 holds a supply pipe (ejection pipe) and a suction flow path member in a handpiece casing. Both the supply pipe and the suction flow path member are pipes through which liquid used for surgery flows. Specifically, the supply pipe is a pipe for ejecting the liquid, and the suction flow path member is a pipe for sucking the ejected liquid.
特許文献1に開示された液体噴射装置の場合、筐体は、先端付近において、細長く形成されている。ここでいう先端とは、供給管および吸引流路部材の開口端が配置された部位のことである。一方で、特許文献1は、ハンドピースの組み立て方法について開示していない。つまり、筐体内に、どのように供給管などを保持するかについて開示していない。
In the case of the liquid ejecting apparatus disclosed in Patent Document 1, the casing is formed elongated in the vicinity of the tip. The tip here refers to a portion where the supply pipe and the opening end of the suction flow path member are arranged. On the other hand, Patent Document 1 does not disclose a method for assembling a handpiece. That is, it does not disclose how the supply pipe or the like is held in the housing.
ハンドピースの組み立て方法としては、例えば、2つのハウジング(第1ハウジング及び第2ハウジング)の結合によって筐体を構成することが考えられる。この場合、第1ハウジングに供給管などを収容した後、第2ハウジングを第1ハウジングに被せて、第1ハウジングと第2ハウジングとを結合することによって、組み立てることができる。結合には、例えばネジによる締結を利用することができる。
As a method for assembling the handpiece, for example, it is conceivable to form a housing by coupling two housings (first housing and second housing). In this case, after the supply pipe or the like is accommodated in the first housing, the second housing is covered with the first housing, and the first housing and the second housing can be combined to assemble. For the connection, for example, fastening with screws can be used.
上記の第1ハウジングに供給管などを収容する手順を実行しやすくするために、少なくとも上記の細長く形成された部位については、片方のケースのみで構成されるのではなく、第1ハウジング及び第2ハウジングの結合によって構成されることが好ましい。
In order to facilitate execution of the procedure of housing the supply pipe or the like in the first housing, at least the elongated portion is not configured by only one case but the first housing and the second housing. It is preferable to be constituted by coupling of housings.
細長く形成された部位は剛性が低いので、先端付近において第1ハウジング及び第2ハウジングが分離しないように結合させることが好ましい。しかし、細長く形成された部位は、ネジ穴を設けるスペースがとりづらい。このため、2つのハウジングを用いる構成は、設計が難しかった。
Since the portion formed elongated is low in rigidity, it is preferable that the first housing and the second housing be coupled so as not to separate in the vicinity of the tip. However, it is difficult to provide a space for providing a screw hole in the elongated portion. For this reason, the configuration using two housings has been difficult to design.
上記の内容は、供給管と吸引流路部材との何れか1つを保持するハンドピースにも共通であった。さらに、上記の内容は、供給管と吸引流路部材との少なくとも何れかが、ハンドピースを貫通して突き出る構成にも共通であった。さらに、上記の内容は、液体を利用した手術のための装置に共通であった。このような装置としては、超音波による破砕を利用した手術装置や、液体を利用した手術において、液体を吸引する装置等が挙げられる。
The above contents were common to the handpiece that holds either one of the supply pipe and the suction flow path member. Further, the above contents are common to a configuration in which at least one of the supply pipe and the suction flow path member protrudes through the handpiece. Further, the above contents are common to the apparatus for the operation using the liquid. Examples of such a device include a surgical device that uses ultrasonic crushing and a device that sucks liquid in a surgical procedure that uses liquid.
本願発明は、上記を踏まえ、筐体の先端付近をネジによらずに結合させることを解決課題とする。
Based on the above, the present invention has an object to solve the problem by joining the vicinity of the front end of the casing without using screws.
本発明は、上記課題を解決するためのものであり、以下の形態として実現できる。
The present invention is for solving the above-described problems and can be realized as the following forms.
本発明の一形態は、手術に利用される液体が流れる管を少なくとも1つ保持し、ユーザーによって把持される筐体を備え;前記筐体は、第1ハウジングと、前記第1ハウジングと結合された第2ハウジングと、を備え;前記第1ハウジングは、端部に、前記管が貫通する又は前記管の端部が内部に配置されるリング部材を備え;前記第2ハウジングは、端部に、前記リング部材に挿入されている凸部を備える手術用ハンドピースである。この形態によれば、筐体の端部付近をネジによらずに結合させることができる。
One aspect of the present invention includes a housing that holds at least one tube through which liquid used for surgery flows and is gripped by a user; the housing is coupled to the first housing and the first housing. A second housing; at the end, the first housing is provided with a ring member through which the tube passes or an end of the tube is disposed; and the second housing is at the end A surgical handpiece including a convex portion inserted into the ring member. According to this embodiment, the vicinity of the end of the housing can be coupled without using screws.
上記形態において、前記リング部材は、内周面において、外周面に向かって抉れている抉れ面を備え;前記凸部は、前記抉れ面に挿入されていてもよい。この形態によれば、リング部材を貫通する他の部材と、凸部との干渉を回避しやすくなる。
In the above-described embodiment, the ring member includes a bent surface that is bent toward the outer peripheral surface on the inner peripheral surface; and the convex portion may be inserted into the bent surface. According to this embodiment, it becomes easy to avoid interference between the other member penetrating the ring member and the convex portion.
上記形態において、前記凸部は、前記挿入の方向の先端面が面取りされていてもよい。この形態によれば、凸部をリング部材に挿入しやすくなる。
In the above embodiment, the convex portion may have a chamfered tip surface in the insertion direction. According to this form, it becomes easy to insert the convex portion into the ring member.
上記形態において、前記挿入の方向について、前記凸部の先端面は、前記リング部材の先端面よりも前記筐体の内部側に引っ込んでいてもよい。この形態によれば、凸部が、リング部材の先端面に配置される他の部材に干渉することが回避される。
In the above embodiment, with respect to the insertion direction, the front end surface of the convex portion may be retracted to the inner side of the housing than the front end surface of the ring member. According to this form, it is avoided that a convex part interferes with the other member arrange | positioned at the front end surface of a ring member.
上記形態において、前記管は、液体を切除対象部位に供給するための供給管であってもよい。この形態によれば、液体を利用した手術のために、液体を供給できる。
In the above embodiment, the tube may be a supply tube for supplying liquid to the excision target site. According to this aspect, the liquid can be supplied for the operation using the liquid.
上記形態において、前記供給管は、液体を間欠的に噴射するためのものであってもよい。この形態によれば、間欠的な液体の噴射を利用して手術ができる。
In the above embodiment, the supply pipe may be for ejecting liquid intermittently. According to this embodiment, an operation can be performed using intermittent liquid ejection.
上記形態において、前記管は、液体を吸引するための吸引管であってもよい。この形態によれば、手術において液体の吸引ができる。
In the above embodiment, the tube may be a suction tube for sucking a liquid. According to this form, the liquid can be sucked in the operation.
本発明は、上記以外の種々の形態で実現できる。例えば、上記のハンドピースを含む液体噴射装置や吸引装置の形態で実現できる。
The present invention can be realized in various forms other than the above. For example, it can be realized in the form of a liquid ejecting apparatus or a suction apparatus including the handpiece.
図1は、手術装置20の構成を概略的に示す。手術装置20は、液体を利用した手術を実現するための医療機器である。手術装置20は、患部に対して液体を噴射することによって、患部(生体組織)を切除する機能と、噴射した液体や切除された生体組織を吸引する機能と、を有する。このため、手術装置20は、液体噴射装置であり、且つ、吸引装置である。
FIG. 1 schematically shows the configuration of the surgical apparatus 20. The surgical device 20 is a medical device for realizing a surgery using a liquid. The surgical apparatus 20 has a function of excising the affected part (living tissue) by ejecting liquid to the affected part, and a function of sucking the ejected liquid and the excised living tissue. For this reason, the surgical apparatus 20 is a liquid ejecting apparatus and a suction apparatus.
手術装置20は、制御装置30と、アクチュエーター用ケーブル31と、ポンプ用ケーブル32と、フットスイッチ35と、吸引器40と、吸引チューブ41と、液体供給装置50と、手術用ハンドピース200(以下、ハンドピース200という)と、を備える。
The surgical device 20 includes a control device 30, an actuator cable 31, a pump cable 32, a foot switch 35, a suction device 40, a suction tube 41, a liquid supply device 50, and a surgical handpiece 200 (hereinafter referred to as “surgical handpiece 200”). And handpiece 200).
液体供給装置50は、給水バッグ51と、スパイク針52と、第1~第5コネクター53a~53eと、第1~第4給水チューブ54a~54dと、ポンプチューブ55と、閉塞検出機構56と、フィルター57と、チューブポンプ60と、を備える。ハンドピース200は、供給管205と、吸引管400と、を備える。
The liquid supply device 50 includes a water supply bag 51, a spike needle 52, first to fifth connectors 53a to 53e, first to fourth water supply tubes 54a to 54d, a pump tube 55, a blockage detection mechanism 56, A filter 57 and a tube pump 60 are provided. The handpiece 200 includes a supply pipe 205 and a suction pipe 400.
給水バッグ51は、透明な合成樹脂製であり、内部に液体(具体的には生理食塩水)が充填されている。なお、本願では、水以外の液体が充填されていても、給水バッグ51と呼ぶ。スパイク針52は、第1コネクター53aを介して、第1給水チューブ54aに接続されている。給水バッグ51にスパイク針52が刺されると、給水バッグ51に充填された液体が第1給水チューブ54aに供給可能な状態になる。
The water supply bag 51 is made of a transparent synthetic resin, and is filled with a liquid (specifically, physiological saline). In addition, in this application, even if it fills with liquids other than water, it calls the water supply bag 51. FIG. The spike needle 52 is connected to the first water supply tube 54a via the first connector 53a. When the spike needle 52 is stabbed into the water supply bag 51, the liquid filled in the water supply bag 51 can be supplied to the first water supply tube 54a.
第1給水チューブ54aは、第2コネクター53bを介して、ポンプチューブ55に接続されている。ポンプチューブ55は、第3コネクター53cを介して、第2給水チューブ54bに接続されている。チューブポンプ60は、ポンプチューブ55を、ステーター60aとローター60bとで挟み込んでいる。チューブポンプ60は、内蔵するモーター(供給モーター62)の回転によって、ローター上の複数のローラーを回転させることで、ポンプチューブ55を扱(しご)く。このように扱かれることによって、ポンプチューブ55内の液体は、第1給水チューブ54a側から、第2給水チューブ54b側に送り出される。なお、供給モーター62を回転させることを「チューブポンプ60を駆動する」という。
The first water supply tube 54a is connected to the pump tube 55 via the second connector 53b. The pump tube 55 is connected to the second water supply tube 54b via the third connector 53c. The tube pump 60 sandwiches the pump tube 55 between the stator 60a and the rotor 60b. The tube pump 60 handles the pump tube 55 by rotating a plurality of rollers on the rotor by rotation of a built-in motor (supply motor 62). By being handled in this way, the liquid in the pump tube 55 is sent out from the first water supply tube 54a side to the second water supply tube 54b side. Note that rotating the supply motor 62 is referred to as “driving the tube pump 60”.
閉塞検出機構56は、第2給水チューブ54b内の圧力を測定することで、第2~第4給水チューブ54b~54d及びハンドピース200内の流路の閉塞を検出する。閉塞検出機構56は、閉塞を検出すると、制御装置30に検出結果を入力する。
The blockage detection mechanism 56 detects the blockage of the flow paths in the second to fourth water supply tubes 54b to 54d and the handpiece 200 by measuring the pressure in the second water supply tube 54b. When detecting the blockage, the blockage detection mechanism 56 inputs the detection result to the control device 30.
第2給水チューブ54bは、第4コネクター53dを介して、第3給水チューブ54cに接続されている。第3給水チューブ54cにはフィルター57が接続されている。フィルター57は、液体に含まれる異物を捕集する。
The second water supply tube 54b is connected to the third water supply tube 54c via the fourth connector 53d. A filter 57 is connected to the third water supply tube 54c. The filter 57 collects foreign matters contained in the liquid.
第3給水チューブ54cは、第5コネクター53eを介して、第4給水チューブ54dに接続されている。第4給水チューブ54dは、ハンドピース200に接続されている。第4給水チューブ54dを通じてハンドピース200に供給された液体は、駆動部300(図4,図5)の駆動によって、供給管205の先端に設けられたノズル207から間欠的に噴射される。このように液体が間欠的に噴射されることによって、少ない流量で切除能力が確保できる。このように、供給管205は、生体組織を切除するための液体を、切除対象部位に供給するための管である。供給管205は、液体を噴射するためのものであるので、噴射管とも呼ぶ。供給管205は、手術に利用される液体が流れる管とも言える。
The third water supply tube 54c is connected to the fourth water supply tube 54d via the fifth connector 53e. The fourth water supply tube 54d is connected to the handpiece 200. The liquid supplied to the handpiece 200 through the fourth water supply tube 54d is intermittently ejected from the nozzle 207 provided at the tip of the supply pipe 205 by the drive of the drive unit 300 (FIGS. 4 and 5). In this way, the liquid is intermittently ejected, so that the resecting capability can be secured with a small flow rate. Thus, the supply tube 205 is a tube for supplying a liquid for excising the living tissue to the excision target site. Since the supply pipe 205 is for injecting liquid, it is also called an injection pipe. The supply pipe 205 can also be said to be a pipe through which a liquid used for surgery flows.
吸引チューブ41は、ハンドピース200に接続されている。吸引器40は、吸引チューブ41を通じて、吸引管400内を吸引する。この吸引によって、吸引管400の先端付近の液体や切除片などが吸引される。このように、吸引管400は、供給管205と同様、手術に利用される液体が流れる管である。
The suction tube 41 is connected to the handpiece 200. The suction device 40 sucks the inside of the suction tube 400 through the suction tube 41. By this suction, liquid near the tip of the suction tube 400, a cut piece, and the like are sucked. As described above, the suction tube 400 is a tube through which a liquid used for surgery flows, like the supply tube 205.
制御装置30は、CPU(Central Processing Unit)と、記憶媒体と、を備える。記憶媒体には、チューブポンプ60及び圧電素子360(図5参照)を制御するためのプログラムが記憶されている。制御装置30は、CPUがこのプログラムを実行することによって、フットスイッチ35が踏まれている間、アクチュエーター用ケーブル31を介して第1駆動信号を送信し、ポンプ用ケーブル32を介して第2駆動信号を送信する。第1駆動信号は、本実施形態においては400Hzの周期性を有し、駆動部300を駆動させる。第2駆動信号は、チューブポンプ60を駆動させる。よって、ユーザーがフットスイッチ35を踏んでいる間は液体が間欠的に噴射され、ユーザーがフットスイッチ35を踏んでいない間は液体の噴射が停止する。
The control device 30 includes a CPU (Central Processing Unit) and a storage medium. A program for controlling the tube pump 60 and the piezoelectric element 360 (see FIG. 5) is stored in the storage medium. The control device 30 transmits the first drive signal via the actuator cable 31 and the second drive via the pump cable 32 while the foot switch 35 is depressed by the CPU executing this program. Send a signal. In the present embodiment, the first drive signal has a periodicity of 400 Hz and drives the drive unit 300. The second drive signal drives the tube pump 60. Therefore, the liquid is intermittently ejected while the user steps on the foot switch 35, and the liquid ejection stops while the user does not step on the foot switch 35.
図2は、ハンドピース200の斜視図を示す。図3は、ハンドピース200の側面図を示す。ハンドピース200は、供給管205と、筐体210と、ネジ221,222,223と、吸引管400と、吸引力調整機構500と、を備える。
FIG. 2 shows a perspective view of the handpiece 200. FIG. 3 shows a side view of the handpiece 200. The handpiece 200 includes a supply pipe 205, a casing 210, screws 221, 222, and 223, a suction pipe 400, and a suction force adjustment mechanism 500.
筐体210は、ユーザーによって把持される部材である。筐体210は、第1ハウジング210aと、第2ハウジング210bとの結合によって形成される。供給管205は、金属製であるので、導電性である。筐体210及び吸引管400は、硬質の樹脂製である。
The housing 210 is a member held by the user. The housing 210 is formed by coupling the first housing 210a and the second housing 210b. Since the supply pipe 205 is made of metal, it is conductive. The casing 210 and the suction tube 400 are made of hard resin.
図2,図3に示すように、ハンドピース200を基準にした2つの直交座標系を定義する。1つ目は、X1-Y-Z1座標系である。2つ目は、X2-Y-Z2座標系である。2つの座標系に共通するY方向は、第1ハウジング210aと、第2ハウジング210bとの境界線と直交する方向であり、第1ハウジング210aから第2ハウジング210bへの向きが正の向きである。ここでいう境界線とは、図2に示されるように、筐体210の表面に表れる線のことである。但し、Y方向の定義においては、接続部10付近の境界線は除外して考える。接続部10については、図10と共に後述する。
2 and 3, two orthogonal coordinate systems based on the handpiece 200 are defined. The first is the X1-Y-Z1 coordinate system. The second is the X2-YZ2 coordinate system. The Y direction common to the two coordinate systems is a direction orthogonal to the boundary line between the first housing 210a and the second housing 210b, and the direction from the first housing 210a to the second housing 210b is a positive direction. . The boundary line here is a line appearing on the surface of the housing 210 as shown in FIG. However, in the definition of the Y direction, the boundary line near the connecting portion 10 is excluded. The connection unit 10 will be described later with reference to FIG.
X1方向は、上記境界線に含まれる所定の直線と平行な方向であり、吸引管400の開口端への向きが正の向きである。上記所定の直線とは、吸引力調整機構500の両側に表れる直線のことである。Z1方向は、X1方向とY方向とから、右手系によって定義される。
The X1 direction is a direction parallel to a predetermined straight line included in the boundary line, and the direction toward the opening end of the suction tube 400 is a positive direction. The predetermined straight line is a straight line appearing on both sides of the suction force adjusting mechanism 500. The Z1 direction is defined by the right hand system from the X1 direction and the Y direction.
X2方向は、吸引管400の長手方向であり、吸引管400の開口端への向きが正の向きである。Z2方向は、X2方向とY方向とから、右手系によって定義される。X1方向とX2方向との間の角度は、本実施形態においては20度である。
The X2 direction is the longitudinal direction of the suction tube 400, and the direction of the suction tube 400 toward the open end is a positive direction. The Z2 direction is defined by the right hand system from the X2 direction and the Y direction. The angle between the X1 direction and the X2 direction is 20 degrees in the present embodiment.
第2ハウジング210bは、第1ハウジング210aに対して、ネジ221,222,223の締結によって固定されている。ネジ221,222,223のうち、最もX1方向のマイナス側に位置するのはネジ223である。ネジ223の位置は、筐体210のX1方向マイナス側における端部付近に配置されている。このため、筐体210のX1方向マイナス側における端部付近において、第2ハウジング210bは、第1ハウジング210aに対して、しっかりと固定されている。
The second housing 210b is fixed to the first housing 210a by fastening screws 221, 222, and 223. Of the screws 221, 222, and 223, the screw 223 is positioned closest to the minus side in the X1 direction. The position of the screw 223 is disposed in the vicinity of the end of the housing 210 on the minus side in the X1 direction. For this reason, the second housing 210b is firmly fixed to the first housing 210a in the vicinity of the end of the housing 210 on the minus side in the X1 direction.
ネジ221,222,223のうち、最もX1方向プラス側に位置するのはネジ221である。ネジ221の位置は、筐体210のX1方向プラス側における端部、すなわち接続部10付近よりもX1方向マイナス側に寄っている。これは、ネジ221よりもX1方向プラス側において、筐体210を細く設計するためである。但し、ネジ221よりもX1方向プラス側においても、第2ハウジング210bは、第1ハウジング210aに対して、しっかりと固定されている(図14,図15と共に後述)。
Of the screws 221, 222, and 223, the screw 221 is located closest to the X1 direction plus side. The position of the screw 221 is closer to the minus side in the X1 direction than the end of the housing 210 on the plus side in the X1 direction, that is, the vicinity of the connecting portion 10. This is because the housing 210 is designed to be narrower on the plus side in the X1 direction than the screw 221. However, the second housing 210b is firmly fixed to the first housing 210a on the plus side in the X1 direction from the screw 221 (described later with reference to FIGS. 14 and 15).
図4は、ハンドピース200の断面図を示す。筐体210の内部には、ネジ孔221a,222a,223aと、入口流路241と、絶縁部材270(図6と共に後述)と、駆動部300とが設けられている。
FIG. 4 shows a cross-sectional view of the handpiece 200. Inside the casing 210, screw holes 221a, 222a, 223a, an inlet channel 241, an insulating member 270 (described later with reference to FIG. 6), and a driving unit 300 are provided.
図4に筐体210の断面として表れている面は、第1ハウジング210aの合わせ面でもある。第1ハウジング210aの合わせ面とは、Y方向と直交する面であって、筐体210として組み付けられた際に、第2ハウジング210bと接触する面のことである。但し、円で囲んだ拡大図に示されたリング部材280(後述)として示された領域は、合わせ面ではなく、リング部材280の切断面である。供給管205及び吸引管400は、リング部材280を貫通している。
4 is a mating surface of the first housing 210a. The mating surface of the first housing 210a is a surface orthogonal to the Y direction and is a surface that comes into contact with the second housing 210b when assembled as the housing 210. However, a region shown as a ring member 280 (described later) shown in the enlarged view surrounded by a circle is not a mating surface but a cut surface of the ring member 280. The supply pipe 205 and the suction pipe 400 pass through the ring member 280.
第4給水チューブ54dは、筐体210内部でU字状に屈曲し、入口流路241に接続されている。入口流路241は、液体室240(図6参照)を介して、供給管205に通じている。
The fourth water supply tube 54d is bent in a U shape inside the casing 210 and connected to the inlet channel 241. The inlet channel 241 communicates with the supply pipe 205 via the liquid chamber 240 (see FIG. 6).
入口流路241の流路径は、供給管205の流路径よりも小さい。このため、液体室240内の圧力が変動しても(後述)、液体室240内の液体が入口流路241に逆流することが抑制される。
The channel diameter of the inlet channel 241 is smaller than the channel diameter of the supply pipe 205. For this reason, even if the pressure in the liquid chamber 240 fluctuates (described later), the liquid in the liquid chamber 240 is prevented from flowing back into the inlet channel 241.
筐体210は、リング部材280を備える。吸引管400の装着は、吸引管400の一部である挿入部405がリング部材280に嵌合し(図12,図13と共に後述)、吸引管400の一部であるフランジ410が、第1ハウジング210aのリング部材280に接触することで実現される。装着された吸引管400内の流路は、吸引流路部材230に通じている。吸引流路部材230は、供給管205よりも柔らかく、軟質の樹脂製である。吸引流路部材230は、吸引力調整機構500を介して、吸引チューブ41に接続されている。
The housing 210 includes a ring member 280. When the suction tube 400 is attached, the insertion portion 405 that is a part of the suction tube 400 is fitted to the ring member 280 (described later with reference to FIGS. 12 and 13), and the flange 410 that is a part of the suction tube 400 is the first. It implement | achieves by contacting the ring member 280 of the housing 210a. The flow path in the attached suction pipe 400 communicates with the suction flow path member 230. The suction channel member 230 is softer than the supply pipe 205 and is made of a soft resin. The suction flow path member 230 is connected to the suction tube 41 via the suction force adjustment mechanism 500.
吸引力調整機構500には、吸引流路部材230と吸引チューブ41とを接続する吸引流路部材510と、吸引流路部材510内の流路と連通する孔522とが設けられている。ユーザーは、孔522を利用して、吸引管400による吸引力の調整ができる。具体的には、孔522が開放されている面積を小さくすれば、孔522から流入する空気の流量も小さくなるので、吸引管400を介して吸引される流体(空気や液体等)の流量が大きくなる。つまり、吸引管400による吸引力が大きくなる。逆に、孔522が開放されている面積を大きくすれば、孔522から流入する空気の流量も大きくなるので、吸引管400による吸引力が小さくなる。通常、ユーザーは、孔522の開放面積の調整を、親指によって孔522を塞ぐ面積を調整することによって実現する。孔522が全く覆われていない状態では、吸引管400による吸引力が微小になるように、又は吸引力が全く作用しないように、孔522の形状が設計されている。本実施形態においては、吸引管400の流路面積が孔522の開口面積より大きいものの、吸引管400の長さを十分に長くすることで吸引管400の流路抵抗を孔522の流路抵抗よりも大きくしている。こうすることで孔522が全く覆われていない場合に、吸引管400による吸引力を微小とすることができる。
The suction force adjusting mechanism 500 is provided with a suction channel member 510 that connects the suction channel member 230 and the suction tube 41, and a hole 522 that communicates with the channel in the suction channel member 510. The user can adjust the suction force by the suction pipe 400 using the hole 522. Specifically, if the area where the hole 522 is opened is reduced, the flow rate of air flowing in from the hole 522 is also reduced, so that the flow rate of fluid (air, liquid, etc.) sucked through the suction pipe 400 is reduced. growing. That is, the suction force by the suction pipe 400 is increased. On the contrary, if the area where the hole 522 is opened is increased, the flow rate of the air flowing from the hole 522 is also increased, so that the suction force by the suction pipe 400 is reduced. Usually, the user adjusts the open area of the hole 522 by adjusting the area where the hole 522 is closed by the thumb. In a state where the hole 522 is not covered at all, the shape of the hole 522 is designed so that the suction force by the suction pipe 400 becomes minute or no suction force acts. In this embodiment, although the flow area of the suction pipe 400 is larger than the opening area of the hole 522, the flow resistance of the suction pipe 400 is reduced by sufficiently increasing the length of the suction pipe 400. Is bigger than. In this way, when the hole 522 is not covered at all, the suction force by the suction tube 400 can be made minute.
ネジ孔221a,222a,223aは、第1ハウジング210aに設けられている。ネジ孔221a,222a,223aには、ネジ221,222,223がネジ留めされる。ネジ222は、駆動部300の流路接続部材250に設けられた孔255(図5参照)を貫通して、ネジ孔222aに挿入される。
The screw holes 221a, 222a, and 223a are provided in the first housing 210a. Screws 221, 222, 223 are screwed into the screw holes 221a, 222a, 223a. The screw 222 passes through a hole 255 (see FIG. 5) provided in the flow path connecting member 250 of the driving unit 300 and is inserted into the screw hole 222a.
図5は、駆動部300付近を拡大して示す断面図である。駆動部300は、流路接続部材250と、ダイヤフラム260と、円筒部材351と、固定部材353と、圧電素子360と、ピストン362と、を備える。
FIG. 5 is an enlarged sectional view showing the vicinity of the driving unit 300. The drive unit 300 includes a flow path connecting member 250, a diaphragm 260, a cylindrical member 351, a fixing member 353, a piezoelectric element 360, and a piston 362.
圧電素子360は、積層型圧電素子である。圧電素子360は、伸縮する方向がX1方向に沿うように、円筒部材351内に配置されている。
Piezoelectric element 360 is a laminated piezoelectric element. The piezoelectric element 360 is disposed in the cylindrical member 351 so that the extending and contracting direction is along the X1 direction.
固定部材353は、円筒部材351の一端に固定されている。具体的には、固定部材353に外周に設けられた雄ネジ353aが、円筒部材351の内周に設けられた雌ネジ351bに締結されることによって、固定部材353が円筒部材351の一端に固定されている。
The fixing member 353 is fixed to one end of the cylindrical member 351. Specifically, the fixing member 353 is fixed to one end of the cylindrical member 351 by fastening the male screw 353 a provided on the outer periphery of the fixing member 353 to the female screw 351 b provided on the inner periphery of the cylindrical member 351. Has been.
圧電素子360は、固定部材353に接着剤によって固定されている。アクチュエーター用ケーブル31を構成する第1ケーブル31a,及び第2ケーブル31bは、固定部材353に設けられた貫通孔を貫通し、圧電素子360に電気的に接続されている。
The piezoelectric element 360 is fixed to the fixing member 353 with an adhesive. The first cable 31 a and the second cable 31 b that constitute the actuator cable 31 pass through a through hole provided in the fixing member 353 and are electrically connected to the piezoelectric element 360.
ダイヤフラム260の素材は、金属であり、具体的にはステンレス鋼であり、さらに具体的にはSUS304又はSUS316Lである。ダイヤフラム260は、圧電素子360のプリロード(予圧)を実施するために厚めに形成される(例えば300μm)。ダイヤフラム260は、円筒部材351の他端を覆うように配置され、円筒部材351に溶接によって固定されている。
The material of the diaphragm 260 is a metal, specifically stainless steel, and more specifically SUS304 or SUS316L. The diaphragm 260 is formed thicker (for example, 300 μm) in order to perform preloading (preloading) of the piezoelectric element 360. The diaphragm 260 is disposed so as to cover the other end of the cylindrical member 351, and is fixed to the cylindrical member 351 by welding.
ピストン362は、圧電素子360の一端に接着剤によって固定されていると共に、ダイヤフラム260に接触するように配置されている。ピストン362は、異なる径の円柱が、同心円として積層したような形状をしている。小さい径の方が、ダイヤフラム260と接触している。このため、ダイヤフラム260は、端の方が押されず、溶接箇所には大きな力が作用しないようになっている。ピストン362及びダイヤフラム260は、接着剤等によって固定されてはおらず、接触しているのみである。
The piston 362 is fixed to one end of the piezoelectric element 360 with an adhesive and is disposed so as to contact the diaphragm 260. The piston 362 has a shape in which cylinders having different diameters are stacked as concentric circles. The smaller diameter is in contact with the diaphragm 260. For this reason, the diaphragm 260 is not pushed toward the end, and a large force does not act on the welded portion. The piston 362 and the diaphragm 260 are not fixed by an adhesive or the like, but are only in contact with each other.
円筒部材351の外周には、雄ネジ351aが設けられている。雄ネジ351aを、流路接続部材250に設けられた雌ネジ253に締め付けることで、円筒部材351が流路接続部材250に固定されている。
A male screw 351a is provided on the outer periphery of the cylindrical member 351. The cylindrical member 351 is fixed to the flow path connecting member 250 by tightening the male screw 351 a to the female screw 253 provided in the flow path connecting member 250.
圧電素子360は、アクチュエーター用ケーブル31を介して入力される駆動信号に応じて伸縮する。圧電素子360が伸縮すると、ピストン362が圧電素子360の長手方向(X1方向)に振動する。ピストン362が振動すると、ダイヤフラム260は、この振動に追従して変形する。なお、駆動信号によって圧電素子360を伸縮させることを、駆動部300を駆動させるという。
The piezoelectric element 360 expands and contracts according to a drive signal input via the actuator cable 31. When the piezoelectric element 360 expands and contracts, the piston 362 vibrates in the longitudinal direction (X1 direction) of the piezoelectric element 360. When the piston 362 vibrates, the diaphragm 260 is deformed following the vibration. Note that expanding and contracting the piezoelectric element 360 by the drive signal is referred to as driving the drive unit 300.
図6は、ダイヤフラム260付近を拡大した断面を示す。流路接続部材250には、窪み244が設けられている。窪み244は、流路接続部材250において、薄く円形状に窪んだ部位である。窪み244に、ダイヤフラム260が覆い被さることで、液体室240が形成される。このように形成された液体室240は、液体を噴射するための供給管205と連通可能である。
FIG. 6 shows an enlarged cross section near the diaphragm 260. The channel connection member 250 is provided with a recess 244. The recess 244 is a thin and circularly recessed portion in the flow path connecting member 250. The liquid chamber 240 is formed by covering the recess 244 with the diaphragm 260. The liquid chamber 240 formed in this way can communicate with the supply pipe 205 for ejecting liquid.
ダイヤフラム260が変形すると、液体室240の容積が変動する。この変動によって、液体室240内に満たされた液体の圧力が変動する。液体室240内の圧力が低下した際には、入口流路241から液体が液体室240に流入する。液体室240内の圧力が上昇した際には、液体が液体室240から供給管205に流出する。このような向きに液体が流れるのは、先述したように、入口流路241の流路径が、供給管205の流路径よりも細いからである。
When the diaphragm 260 is deformed, the volume of the liquid chamber 240 changes. Due to this variation, the pressure of the liquid filled in the liquid chamber 240 varies. When the pressure in the liquid chamber 240 decreases, the liquid flows into the liquid chamber 240 from the inlet channel 241. When the pressure in the liquid chamber 240 increases, the liquid flows out from the liquid chamber 240 to the supply pipe 205. The liquid flows in such a direction because the flow path diameter of the inlet flow path 241 is smaller than the flow path diameter of the supply pipe 205 as described above.
供給管205に流出した液体は、供給管205の先端から噴射される。液体室240内の圧力が上昇するのは間欠的なので、供給管205からの液体の噴射は間欠的に実施される。
The liquid that has flowed out to the supply pipe 205 is ejected from the tip of the supply pipe 205. Since the pressure in the liquid chamber 240 rises intermittently, the liquid is ejected from the supply pipe 205 intermittently.
図7は、供給管205と、吸引流路部材230とが分岐する部位の拡大断面図である。吸引流路部材230の壁には、孔233bが開いている。供給管205は、孔233bを貫通するように配置される。この配置によって、供給管205の一部は、吸引流路部材230の一部と二重管を形成する。供給管205のうち吸引流路部材230との二重管の内管を構成する部位、つまり孔233bよりもX1方向プラス側の部位から、X2方向プラス側の吸引流路部材の先端までの部位を、内管部205b1と呼ぶ。そして、供給管205のうち孔233bよりもX1方向マイナス側の部位、つまり、吸引流路部材230から分岐した部位を分岐部205a1と呼ぶ。供給管205は、内管部205b1を含むので、内管部材ともいう。
FIG. 7 is an enlarged cross-sectional view of a portion where the supply pipe 205 and the suction flow path member 230 are branched. A hole 233 b is opened in the wall of the suction flow path member 230. The supply pipe 205 is disposed so as to penetrate the hole 233b. With this arrangement, a part of the supply pipe 205 forms a double pipe with a part of the suction flow path member 230. Part of the supply pipe 205 that constitutes the inner pipe of the double pipe with the suction flow path member 230, that is, the part from the X1 direction plus side of the hole 233b to the tip of the suction flow path member on the X2 direction plus side Is called the inner tube portion 205b1. A portion of the supply pipe 205 that is on the minus side in the X1 direction from the hole 233b, that is, a portion branched from the suction flow path member 230 is referred to as a branched portion 205a1. Since the supply pipe 205 includes the inner pipe portion 205b1, it is also referred to as an inner pipe member.
供給管205は、後端側205a2と、先端側205b2とに区分することもできる。後端側205a2は、供給管205においてX1方向に延びる部位である。先端側205b2は、供給管205においてX2方向に延びる部位である。先端側205b2は、後端側205a2に対し、X1方向プラス側に位置すると共に、X2方向プラス側に位置する。
The supply pipe 205 can also be divided into a rear end side 205a2 and a front end side 205b2. The rear end side 205a2 is a part extending in the X1 direction in the supply pipe 205. The distal end side 205b2 is a portion extending in the X2 direction in the supply pipe 205. The front end side 205b2 is located on the plus side in the X1 direction and on the plus side in the X2 direction with respect to the rear end side 205a2.
後端側205a2が孔233bを貫通しているので、後端側205a2と先端側205b2との境界は、先端側232内に配置されている。このため、供給管205には、内管部205b1であり、且つ、後端側205a2である部位が存在する。
Since the rear end side 205a2 passes through the hole 233b, the boundary between the rear end side 205a2 and the front end side 205b2 is disposed in the front end side 232. For this reason, the supply pipe 205 has a portion that is the inner pipe portion 205b1 and the rear end side 205a2.
吸引流路部材230についても、後端側231と先端側232とに区分できる。先端側232は、X2方向に延びる部位である。後端側231は、X1方向に延びる部位である。先端側232は、後端側231に対し、X1方向プラス側に位置すると共に、X2方向プラス側に位置する。吸引流路部材230は、一部が内管部205b1と二重管を形成するので、外管部材ともいう。
The suction channel member 230 can also be divided into a rear end side 231 and a front end side 232. The distal end side 232 is a part extending in the X2 direction. The rear end side 231 is a part extending in the X1 direction. The front end side 232 is located on the X1 direction plus side and the X2 direction plus side with respect to the rear end side 231. A part of the suction channel member 230 forms a double tube with the inner tube portion 205b1, and is also referred to as an outer tube member.
吸引流路部材230は、保持部233を備える。保持部233は、吸引流路部材230の流路として機能する主部から分岐した管状の部材である。保持部233の壁は、孔233bを取り囲むように先端側232に接続されている。具体的には、保持部233は、樹脂成形によって、吸引流路部材230と一体に成形されている。吸引流路部材230及び保持部233は軟性の樹脂製なので、保持部233は弾性部材である。保持部233は、孔233bの周囲から、X1方向マイナス側に真っ直ぐ延び、X1方向マイナス側の端部として開放端233aが設けられている。
The suction flow path member 230 includes a holding portion 233. The holding part 233 is a tubular member branched from the main part that functions as the flow path of the suction flow path member 230. The wall of the holding portion 233 is connected to the distal end side 232 so as to surround the hole 233b. Specifically, the holding part 233 is integrally formed with the suction flow path member 230 by resin molding. Since the suction flow path member 230 and the holding portion 233 are made of a soft resin, the holding portion 233 is an elastic member. The holding portion 233 extends straight from the periphery of the hole 233b toward the X1 direction minus side, and an open end 233a is provided as an end portion on the X1 direction minus side.
分岐部205a1と保持部233との間には、絶縁部材270が配置されている。絶縁部材270は、高密度ポリエチレン製であるので、絶縁性である。絶縁部材270は、保持部233及び分岐部205a1と共に、3重管構造を形成する管状の部材である。絶縁部材270は、この3重管における外から2番目の管(つまり内から2番目の管)に該当する。
An insulating member 270 is disposed between the branch portion 205a1 and the holding portion 233. Since the insulating member 270 is made of high-density polyethylene, it is insulative. The insulating member 270 is a tubular member that forms a triple tube structure together with the holding portion 233 and the branch portion 205a1. The insulating member 270 corresponds to the second tube from the outside (that is, the second tube from the inside) in the triple tube.
絶縁部材270は、保持部233の開放端233aから挿入されることで、保持部233内に配置されている。絶縁部材270は、保持部233よりも長い。よって、絶縁部材270の一部は、保持部233よりもX1方向マイナス側に、はみ出している。絶縁部材270のX1方向マイナス側の端部271は、第4給水チューブ54dと交差する部位よりもX1方向マイナス側に位置する。端部271は、開放端233a等の部位に比べて、筐体210との距離が長い。このため、ノイズとしての電気が、筐体210及び供給管205を通じて圧電素子360に影響を及ぼすことが抑制される。
The insulating member 270 is disposed in the holding portion 233 by being inserted from the open end 233a of the holding portion 233. The insulating member 270 is longer than the holding part 233. Therefore, a part of the insulating member 270 protrudes further to the minus side in the X1 direction than the holding portion 233. The end portion 271 on the minus side in the X1 direction of the insulating member 270 is located on the minus side in the X1 direction with respect to the portion intersecting the fourth water supply tube 54d. The end portion 271 has a longer distance from the housing 210 than a portion such as the open end 233a. For this reason, the influence of electricity as noise on the piezoelectric element 360 through the casing 210 and the supply pipe 205 is suppressed.
分岐部205a1及び絶縁部材270は、締まり嵌めの寸法関係にある。同様に、絶縁部材270及び保持部233は、締まり嵌めの寸法関係にある。分岐部205a1は、絶縁部材270を介して、保持部233に保持される。つまり、保持部233は、供給管205を保持するための部材である。なお、保持部233は、絶縁部材270よりも十分に剛性が低い。よって、保持部233は、絶縁部材270が挿入されると、絶縁部材270よりも、大きく変形する。保持部233の径方向の変形は、保持部233の壁厚の約20%である。
The branch portion 205a1 and the insulating member 270 are in an interference fit dimension relationship. Similarly, the insulating member 270 and the holding portion 233 have an interference fit dimension relationship. The branch portion 205a1 is held by the holding portion 233 via the insulating member 270. That is, the holding unit 233 is a member for holding the supply pipe 205. Note that the holding portion 233 is sufficiently lower in rigidity than the insulating member 270. Therefore, when the insulating member 270 is inserted, the holding portion 233 is deformed more greatly than the insulating member 270. The deformation in the radial direction of the holding portion 233 is about 20% of the wall thickness of the holding portion 233.
上記のように分岐部205a1及び絶縁部材270が締まり嵌めの寸法関係にあるため、分岐部205a1と絶縁部材270との間がシールされる。同様に、絶縁部材270及び保持部233が締まり嵌めの寸法関係にあるため、絶縁部材270と保持部233との間は、シールされる。よって、孔233bと後端側205a2との隙間から流体が漏れることは殆どない。
As described above, since the branch portion 205a1 and the insulating member 270 are in a close-fitting dimension relationship, the space between the branch portion 205a1 and the insulating member 270 is sealed. Similarly, since the insulating member 270 and the holding portion 233 are in a close-fitting dimensional relationship, the insulating member 270 and the holding portion 233 are sealed. Therefore, the fluid hardly leaks from the gap between the hole 233b and the rear end side 205a2.
上記のように保持部233によって分岐部205a1が保持されることによって、保持部233と分岐部205a1がほぼ平行な状態で維持される。一方、先端側232と保持部233とがなす角度θ1は、後端側205a2と先端側205b2とがなす角度θ2とほぼ等しい。このため、先端側205b2は、先端側232に対しほぼ平行に保持される。なお、本実施形態では、角度θ1及び角度θ2は、160度に設計されている。
As described above, the holding portion 233 holds the branch portion 205a1, so that the holding portion 233 and the branch portion 205a1 are maintained in a substantially parallel state. On the other hand, the angle θ1 formed by the front end side 232 and the holding portion 233 is substantially equal to the angle θ2 formed by the rear end side 205a2 and the front end side 205b2. For this reason, the front end side 205b2 is held substantially parallel to the front end side 232. In the present embodiment, the angle θ1 and the angle θ2 are designed to be 160 degrees.
上記のように、弾性部材である保持部233によって分岐部205a1が保持されることによって、供給管205の振動が保持部233によって吸収される。供給管205は、圧電素子360の駆動や、ノズル207から受ける力によって振動する。
As described above, the branch portion 205a1 is held by the holding portion 233, which is an elastic member, so that the vibration of the supply pipe 205 is absorbed by the holding portion 233. The supply pipe 205 vibrates due to driving of the piezoelectric element 360 and a force received from the nozzle 207.
ネジ孔221aは、X1方向について孔233bよりもマイナス側に配置され、Z1方向について、分岐部205a1と、吸引流路部材230との間に配置されている。このため、筐体210は、内管部205b1よりもX2方向プラス側において、先端側232を収容可能な範囲で、細く設計されている。
The screw hole 221a is disposed on the minus side of the hole 233b in the X1 direction, and is disposed between the branch portion 205a1 and the suction flow path member 230 in the Z1 direction. For this reason, the casing 210 is designed to be narrower in a range in which the distal end side 232 can be accommodated on the plus side in the X2 direction than the inner tube portion 205b1.
図8は、筐体210から吸引管400を取り外した状態のハンドピース200を示す斜視図である。以下、この状態を分解状態という。一方、図2等に示されるように、吸引管400が装着された状態を装着状態という。吸引管400は、ユーザーが手作業で、筐体210に対して着脱可能な(取り外したり、取り付けたりできる)ように形成されている。ユーザーは、術部の状態や装置の使用状態によっては、ハンドピース200を分解状態で使用してもよい。手術装置20は、分解状態の場合、吸引装置としては使用されない。以下、この着脱のための構造を説明する。
FIG. 8 is a perspective view showing the handpiece 200 with the suction tube 400 removed from the housing 210. Hereinafter, this state is referred to as a disassembled state. On the other hand, as shown in FIG. 2 and the like, a state in which the suction tube 400 is attached is referred to as an attached state. The suction tube 400 is formed so that it can be attached to and detached from the housing 210 (can be removed or attached) by the user manually. The user may use the handpiece 200 in a disassembled state depending on the state of the surgical site and the use state of the apparatus. The surgical device 20 is not used as a suction device in the disassembled state. The structure for attaching and detaching will be described below.
図9は、吸引管400の断面図である。吸引管400は、挿入部405と、フランジ410と、主部420と、を備える。挿入部405は、図4と共に説明したように、リング部材280に挿入される部位である。挿入部405の先端面は、図9に示すように面取りされている。この面取りによって、挿入部405をリング部材280に挿入する作業がしやすくなる。フランジ410は、挿入部405よりも外径が大きい部位である。
FIG. 9 is a cross-sectional view of the suction tube 400. The suction tube 400 includes an insertion portion 405, a flange 410, and a main portion 420. As described with reference to FIG. 4, the insertion portion 405 is a portion that is inserted into the ring member 280. The distal end surface of the insertion portion 405 is chamfered as shown in FIG. This chamfering facilitates the operation of inserting the insertion portion 405 into the ring member 280. The flange 410 is a part having an outer diameter larger than that of the insertion portion 405.
図10は、図8の接続部10の拡大図である。図11は、接続部10を、X2方向のプラス側からマイナス側に見た図である。第1ハウジング210a及び第2ハウジング210bの輪郭は、ほぼ互いに対称な形状である。但し、接続部10においては、第1ハウジング210a及び第2ハウジング210bの輪郭は、非対称である。
FIG. 10 is an enlarged view of the connecting portion 10 of FIG. FIG. 11 is a view of the connecting portion 10 as viewed from the plus side in the X2 direction to the minus side. The outlines of the first housing 210a and the second housing 210b are substantially symmetrical with each other. However, in the connection part 10, the outlines of the first housing 210a and the second housing 210b are asymmetric.
第1ハウジング210aは、図4と共に説明したリング部材280を備える。リング部材280は、先端面281と、R部282と、円弧面283と、2箇所の平面284と、抉れ(えぐれ)面285と、を備える。
The first housing 210a includes the ring member 280 described with reference to FIG. The ring member 280 includes a front end surface 281, an R portion 282, an arc surface 283, two planes 284, and a curled surface 285.
先端面281は、Y-Z2平面に平行な平面であり、リング部材280において最もX2方向プラス側に位置する部位である。R部282は、先端面281と、リング部材280の外周面と、を接続するR部である。
The front end surface 281 is a plane parallel to the YZ2 plane, and is the portion that is positioned most on the X2 direction plus side in the ring member 280. The R portion 282 is an R portion that connects the front end surface 281 and the outer peripheral surface of the ring member 280.
円弧面283、2箇所の平面284、及び抉れ面285は、貫通孔289の内周面288を形成する。円弧面283は、Y-Z2平面に投影した形状が、円弧になる部位である。抉れ面285は、リング部材280の肉厚が薄くなるように、円弧面283よりも径方向外側に抉れた部位である。2つの平面284は、円弧面283と、抉れ面285と、を接続する平面である。
The circular arc surface 283, the two flat surfaces 284, and the rounded surface 285 form an inner peripheral surface 288 of the through hole 289. The arc surface 283 is a portion where the shape projected onto the YZ2 plane becomes an arc. The curled surface 285 is a portion that is curled radially outward from the arc surface 283 so that the ring member 280 is thin. The two planes 284 are planes that connect the arcuate surface 283 and the curved surface 285.
第2ハウジング210bは、凸部290を備える。凸部290は、抉れ面285によって抉れた部位を埋めるように配置されている。凸部290については、図14~図17と共に詳述する。
The second housing 210b includes a convex portion 290. The convex portion 290 is disposed so as to fill a portion that is curled by the curled surface 285. The convex portion 290 will be described in detail with reference to FIGS.
図12は、内周面288と、吸引管400の挿入部405との嵌め合いを説明するための図である。図13は、図12に示された接触部13B付近の拡大図である。図12及び図13の説明では、内周面288と挿入部405と凸部290とを、Y-Z2平面に投影した2次元における線として取り扱う。図12及び図13は、挿入部405と凸部290とについては、外周面のみを示す。
FIG. 12 is a view for explaining the fitting between the inner peripheral surface 288 and the insertion portion 405 of the suction pipe 400. FIG. 13 is an enlarged view of the vicinity of the contact portion 13B shown in FIG. In the description of FIGS. 12 and 13, the inner peripheral surface 288, the insertion portion 405, and the convex portion 290 are treated as two-dimensional lines projected onto the YZ2 plane. 12 and 13 show only the outer peripheral surface of the insertion portion 405 and the convex portion 290. FIG.
図12及び図13は、挿入部405と内周面288とのそれぞれについて、装着状態における形状を正確に示している訳ではなく、分解状態の形状を示している。後述するように、分解状態から装着状態に移行すると、挿入部405及び内周面288は、弾性変形するので、装着状態と分解状態とでは形状が異なる。
12 and 13 do not accurately show the shape of the insertion portion 405 and the inner peripheral surface 288 in the mounted state, but show the shape of the disassembled state. As will be described later, when the transition is made from the disassembled state to the mounted state, the insertion portion 405 and the inner peripheral surface 288 are elastically deformed, so that the shapes are different between the mounted state and the disassembled state.
図12及び図13において、挿入部405は、内周面288に対して、点Kが重なるように、且つ、対称軸Oが重なるように配置されている。点Kとは、Y-Z2平面において、Y方向の最もマイナス側に位置する点として、挿入部405及び内周面288それぞれに対して定義された点である。対称軸Oとは、Y方向に平行な直線であり、点K並びに円弧面283及び挿入部405の中心を通る直線である。
12 and 13, the insertion portion 405 is disposed so that the point K overlaps the inner peripheral surface 288 and the symmetry axis O overlaps. The point K is a point defined with respect to each of the insertion portion 405 and the inner peripheral surface 288 as a point located on the most negative side in the Y direction on the YZ2 plane. The symmetry axis O is a straight line parallel to the Y direction, and is a straight line passing through the point K, the arc surface 283 and the center of the insertion portion 405.
図13に示すように、円弧面283の内径は、内径d3である。挿入部405の外径は、図9,図13に示すように、外径D2である。仮想内接円Vの直径は、直径D1である。仮想内接円Vとは、点Kを通り、2つの平面284それぞれに接する仮想的な円である。平面284は、円弧面283を含む円の弦に相当する。よって、内径d3は、直径D1よりも大きい。そして、外径D2は、内径d3よりも小さく、直径D1よりも大きく設計されている。このため、図12,図13に示すように、平面284の一部は、挿入部405と重なり合う。このようにして重なり合った部位は、図13においてハッチングで示されている。従って、挿入部405を内周面288に挿入する際、挿入部405及び内周面288は、少なくともハッチングで示された部位が弾性変形する。そして、挿入部405は、2つの平面284からの合力として、Y方向マイナス向きに力を受ける。この合力は、部位13A付近に作用する。
As shown in FIG. 13, the inner diameter of the circular arc surface 283 is an inner diameter d3. The outer diameter of the insertion portion 405 is an outer diameter D2 as shown in FIGS. The virtual inscribed circle V has a diameter D1. The virtual inscribed circle V is a virtual circle that passes through the point K and touches each of the two planes 284. The plane 284 corresponds to a circular chord including the arc surface 283. Therefore, the inner diameter d3 is larger than the diameter D1. The outer diameter D2 is designed to be smaller than the inner diameter d3 and larger than the diameter D1. For this reason, as shown in FIGS. 12 and 13, a part of the plane 284 overlaps with the insertion portion 405. The overlapping parts are indicated by hatching in FIG. Therefore, when the insertion portion 405 is inserted into the inner peripheral surface 288, at least the portions indicated by hatching in the insertion portion 405 and the inner peripheral surface 288 are elastically deformed. The insertion portion 405 receives a force in the Y direction minus direction as a resultant force from the two planes 284. This resultant force acts near the portion 13A.
このようにして挿入部405は、貫通孔289に挿入されると、内周面288から部位13A,13B,13Cの付近において面圧を受ける。この面圧に伴う摩擦力によって、挿入部405は、内周面288に保持される。
Thus, when the insertion portion 405 is inserted into the through-hole 289, it receives a surface pressure from the inner peripheral surface 288 in the vicinity of the portions 13A, 13B, and 13C. The insertion portion 405 is held on the inner peripheral surface 288 by the frictional force accompanying the surface pressure.
上記のように仮想内接円Vは、3点で内周面288に接している。円は3点が決まれば形状が決まる性質を有するので、寸法公差等を考慮しても、仮想内接円Vの位置および直径D1は安定する。本実施形態とは異なり、仮想内接円Vが4点以上で内周面288に接するように設計されていると、寸法公差等を考慮した場合、実際の製品では接触点が減ることがあり得る。仮想内接円Vとの接触点の数が変動すると、挿入部405との接触状態が不安定になる。本実施形態においては、仮想内接円Vが3点で内周面288に接することによって、このような現象が回避されている。この結果、上記の摩擦力が安定するので、装着状態では安定して吸引管400が保持され、且つ、吸引管400を容易に着脱できるような設計が実現できる。
As described above, the virtual inscribed circle V is in contact with the inner peripheral surface 288 at three points. Since the shape of the circle is determined when three points are determined, the position and diameter D1 of the virtual inscribed circle V are stable even if dimensional tolerances are taken into consideration. Unlike this embodiment, if the virtual inscribed circle V is designed to be in contact with the inner peripheral surface 288 at 4 points or more, the contact points may be reduced in an actual product in consideration of dimensional tolerances and the like. obtain. When the number of contact points with the virtual inscribed circle V varies, the contact state with the insertion portion 405 becomes unstable. In the present embodiment, such a phenomenon is avoided by the virtual inscribed circle V being in contact with the inner peripheral surface 288 at three points. As a result, the above-described frictional force is stabilized, so that it is possible to realize a design in which the suction tube 400 is stably held in the mounted state and the suction tube 400 can be easily attached and detached.
抉れ面285が設けられていることによって、内周面の変形能(ばね性)が確保される。つまり、抉れ面285が設けられていることによって、挿入部405が挿入される際に、平面284が受ける力によって、貫通孔289が広がりやすくなる。このため、挿入部405を貫通孔289に挿入する際に過大な力が発生しなくなるので、挿入がしやすくなる。
The provision of the bent surface 285 ensures the deformability (spring property) of the inner peripheral surface. In other words, the provision of the rounded surface 285 makes it easier for the through-hole 289 to expand due to the force received by the flat surface 284 when the insertion portion 405 is inserted. For this reason, excessive force is not generated when the insertion portion 405 is inserted into the through-hole 289, which facilitates insertion.
抉れ面285によって形成された空間に凸部290が配置されていることによって、挿入部405が凸部290に干渉することなく、挿入部405をリング部材280に挿入できる。
Since the convex portion 290 is disposed in the space formed by the bent surface 285, the insertion portion 405 can be inserted into the ring member 280 without the insertion portion 405 interfering with the convex portion 290.
図14は、分解状態におけるハンドピース200の外観を示す。凸部290は、図14の矢視では見えないので、破線で示されている。凸部290の先端面291(図16参照)は、リング部材280の先端面281よりもクリアランスC1だけ、X2方向マイナス側に位置する。つまり、X2方向について、凸部290の先端面291は、リング部材280の先端面281よりも筐体210の内部側に引っ込んでいる。このため、装着状態において、凸部290がフランジ410と干渉することがない。
FIG. 14 shows the appearance of the handpiece 200 in the disassembled state. Since the convex part 290 is not visible in the arrow view of FIG. 14, it is indicated by a broken line. The front end surface 291 (see FIG. 16) of the convex portion 290 is positioned on the minus side in the X2 direction by the clearance C1 from the front end surface 281 of the ring member 280. That is, with respect to the X2 direction, the front end surface 291 of the convex portion 290 is retracted closer to the inner side of the housing 210 than the front end surface 281 of the ring member 280. For this reason, the convex part 290 does not interfere with the flange 410 in the mounted state.
図15は、第1ハウジング210aから第2ハウジング210bを取り外した状態を示す。第2ハウジング210bは、ネジ221,222,223を外せば、第1ハウジング210aから取り外すことができる。逆に、第2ハウジング210bは、第1ハウジング210aに位置を合わせて、ネジ221,222,223を、第2ハウジング210bに設けられた孔221b,222b(図示しない),223c(図示しない)に通して締め付ければ、第1ハウジング210aに取り付けることができる。
FIG. 15 shows a state in which the second housing 210b is removed from the first housing 210a. The second housing 210b can be removed from the first housing 210a by removing the screws 221, 222, and 223. Conversely, the second housing 210b is aligned with the first housing 210a, and the screws 221, 222, and 223 are inserted into holes 221b, 222b (not shown) and 223c (not shown) provided in the second housing 210b. If tightened through, it can be attached to the first housing 210a.
上記のように第2ハウジング210bを取り外す作業には、凸部290をリング部材280からX2方向マイナス側に引き抜く工程が含まれる。第2ハウジング210bを取り付ける作業には、リング部材280に凸部290をX2方向プラス側に挿入する工程が含まれる。
The operation of removing the second housing 210b as described above includes a step of pulling the convex portion 290 from the ring member 280 to the X2 direction minus side. The operation of attaching the second housing 210b includes a step of inserting the convex portion 290 into the ring member 280 on the plus side in the X2 direction.
上記のようにリング部材280に挿入された凸部290は、ネジ221よりもX2方向プラス側において、第1ハウジング210aと第2ハウジング210bとがY方向に分離することを防止する。このため、筐体210の先端付近をネジによって締結しなくても、第1ハウジング210aと第2ハウジング210bとをしっかりと結合させることができる。ここでいう先端とは、X1方向プラス側の端部であり、X2方向プラス側の端部である。
The protrusion 290 inserted into the ring member 280 as described above prevents the first housing 210a and the second housing 210b from separating in the Y direction on the plus side in the X2 direction with respect to the screw 221. For this reason, the first housing 210a and the second housing 210b can be firmly coupled without fastening the vicinity of the tip of the housing 210 with a screw. The tip here refers to the end on the plus side in the X1 direction and the end on the plus side in the X2 direction.
上記のように、第1ハウジング210a及び第2ハウジング210bに設けられた構成によって先端を結合させるので、部品点数の増大が回避されると共に、結合のために追加した部品が手術中に脱落する危険性も回避されている。
As described above, since the tips are joined by the configuration provided in the first housing 210a and the second housing 210b, an increase in the number of parts is avoided, and a risk that parts added for joining fall off during the operation. Sex is also avoided.
吸引流路部材230は、X2方向プラス側の端部に頭部235(図19と共に後述)を備える。第1ハウジング210aから第2ハウジング210bを取り外した状態においては、頭部235の半分が収容空間Sa(図19と共に後述)に収容されている。ここでいう頭部235の半分とは、Z2-X2平面によって2等分された頭部235のうち、Y方向マイナス側に位置する部位のことである。
The suction flow path member 230 includes a head 235 (described later together with FIG. 19) at the end on the plus side of the X2 direction. In a state where the second housing 210b is removed from the first housing 210a, half of the head 235 is accommodated in the accommodation space Sa (described later with reference to FIG. 19). The half of the head 235 here is a portion located on the minus side in the Y direction in the head 235 divided in half by the Z2-X2 plane.
一方で、第2ハウジング210bには、収容空間Sbが設けられている。第1ハウジング210aに第2ハウジング210bを取り付けた状態において、頭部235は、収容空間Saと収容空間Sbとによって形成される収容空間Sに収容される(図20参照)。
On the other hand, the second housing 210b is provided with an accommodation space Sb. In a state where the second housing 210b is attached to the first housing 210a, the head 235 is accommodated in the accommodating space S formed by the accommodating space Sa and the accommodating space Sb (see FIG. 20).
図16及び図17は、凸部290付近における第2ハウジング210bを示す斜視図である。凸部290は、先端面291と、斜面292と、外周面293と、内周面294と、を備える。外周面293及び内周面294は、図11に示したように、抉れ面285に収まるように形状が定められている。外周面293は、5つの平面によって構成されている。内周面294は、弧面によって構成されている。先端面291は、第2ハウジング210bにおいて最もX2方向プラス側に位置する部位である。
16 and 17 are perspective views showing the second housing 210b in the vicinity of the convex portion 290. FIG. The convex portion 290 includes a tip surface 291, a slope 292, an outer peripheral surface 293, and an inner peripheral surface 294. As shown in FIG. 11, the outer peripheral surface 293 and the inner peripheral surface 294 are shaped so as to be fitted on the rounded surface 285. The outer peripheral surface 293 is configured by five planes. The inner peripheral surface 294 is configured by an arc surface. The front end surface 291 is a portion that is located closest to the X2 direction plus side in the second housing 210b.
斜面292は、先端面291と、外周面293を構成する各面との面取りによって形成された部位である。斜面292が形成されていることによって、凸部290を抉れ面285に挿入しやすくなる。
The inclined surface 292 is a portion formed by chamfering the tip surface 291 and each surface constituting the outer peripheral surface 293. By forming the inclined surface 292, it becomes easy to insert the convex portion 290 into the twisted surface 285.
図17に示すように、第2ハウジング210bには、ストッパー211bと、小径部212bと、大径部213bと、壁214bとが形成されている。ストッパー211b、小径部212b、大径部213b及び壁214bは、図15と共に説明した収容空間Sbの境界面の一部を形成する。収容空間Sbは、これらの境界に加え、ストッパー211b及び壁214bに開いた貫通孔を仮想的に塞ぐことによって区画される空間である。
As shown in FIG. 17, the second housing 210b is formed with a stopper 211b, a small diameter portion 212b, a large diameter portion 213b, and a wall 214b. The stopper 211b, the small diameter part 212b, the large diameter part 213b, and the wall 214b form part of the boundary surface of the accommodation space Sb described with reference to FIG. In addition to these boundaries, the accommodation space Sb is a space that is partitioned by virtually closing a through hole opened in the stopper 211b and the wall 214b.
図18は、リング部材280付近における第1ハウジング210aの斜視図である。図18に示すように、第1ハウジング210aには、ストッパー211aと、小径部212aと、大径部213aと壁214aとが形成されている。ストッパー211a、小径部212a、大径部213a及び壁214aはそれぞれ、図15と共に説明した収容空間Saの境界の一部を形成する。収容空間Saは、これらの境界に加え、ストッパー211a及び壁214aに開いた貫通孔を仮想的に塞ぐことによって区画される空間である。これらの構成は、第2ハウジング210bのストッパー211b、小径部212b、大径部213b及び壁214bに対して、対称な形状である。
FIG. 18 is a perspective view of the first housing 210a in the vicinity of the ring member 280. FIG. As shown in FIG. 18, the first housing 210a is formed with a stopper 211a, a small diameter portion 212a, a large diameter portion 213a, and a wall 214a. The stopper 211a, the small diameter part 212a, the large diameter part 213a, and the wall 214a each form part of the boundary of the accommodation space Sa described with reference to FIG. In addition to these boundaries, the accommodation space Sa is a space that is partitioned by virtually closing a through hole opened in the stopper 211a and the wall 214a. These configurations are symmetrical with respect to the stopper 211b, the small diameter portion 212b, the large diameter portion 213b, and the wall 214b of the second housing 210b.
図19は、第1ハウジング210aから吸引流路部材230を取り外した状態であり、且つ、供給管205がリング部材280を貫通している状態を示す。吸引流路部材230は、頭部235を備える。頭部235は、吸引流路部材230の最もX2方向プラス側、つまり、先端側232の最もX2方向プラス側に形成されており、吸引流路部材230の他の部位よりも外径が大きい。頭部235の外径は、ストッパー211aの内径よりも大きく、小径部212a及び大径部213aの内径よりも小さい。
FIG. 19 shows a state where the suction flow path member 230 is removed from the first housing 210a and the supply pipe 205 penetrates the ring member 280. The suction channel member 230 includes a head 235. The head 235 is formed on the most positive side in the X2 direction of the suction flow path member 230, that is, on the most positive side in the X2 direction on the distal end side 232, and has an outer diameter larger than other portions of the suction flow path member 230. The outer diameter of the head 235 is larger than the inner diameter of the stopper 211a and smaller than the inner diameters of the small diameter portion 212a and the large diameter portion 213a.
吸引流路部材230を第1ハウジング210aに取り付ける場合は、吸引流路部材230をリング部材280に近づけて、頭部235の半分を収容空間Saに収納する。こうすることで、頭部235がX2方向プラス側に移動することは、壁214aによって制限される。さらに、頭部235がX2方向マイナス側に移動することは、ストッパー211aによって制限される。さらに、頭部235がY方向マイナス側、或いはZ2方向に移動することは、小径部212aと大径部213aとによって制限される。
When attaching the suction flow path member 230 to the first housing 210a, the suction flow path member 230 is moved closer to the ring member 280, and half of the head 235 is stored in the storage space Sa. By doing so, the movement of the head 235 to the X2 direction plus side is restricted by the wall 214a. Further, the movement of the head 235 to the minus side in the X2 direction is restricted by the stopper 211a. Furthermore, the movement of the head 235 in the Y direction minus side or the Z2 direction is restricted by the small diameter portion 212a and the large diameter portion 213a.
同様な構造を有する第2ハウジング210bを第1ハウジング210aに固定することによって、頭部235がY方向プラス側に移動することが、小径部212bと大径部213bとによって制限される。この結果、頭部235が収容空間S内に保持される。
By fixing the second housing 210b having the same structure to the first housing 210a, the movement of the head 235 to the plus side in the Y direction is restricted by the small diameter portion 212b and the large diameter portion 213b. As a result, the head 235 is held in the accommodation space S.
図20は、分解状態におけるハンドピース200と吸引管400との断面図である。図21は、装着状態におけるハンドピース200の断面図である。図20及び図21を用いて、吸引管400と、吸引流路部材230とのシールについて説明する。
FIG. 20 is a cross-sectional view of the handpiece 200 and the suction tube 400 in an exploded state. FIG. 21 is a cross-sectional view of the handpiece 200 in the mounted state. The seal between the suction pipe 400 and the suction flow path member 230 will be described with reference to FIGS.
頭部235は、シール部235Aを備える。シール部235Aは、装着状態において、頭部235の内壁から挿入部405に向かって盛り上がった部位である。つまり、シール部235Aは、頭部235の内壁から、頭部235の中心軸線に向かって盛り上がった部位である。
The head portion 235 includes a seal portion 235A. The seal portion 235A is a portion that rises from the inner wall of the head 235 toward the insertion portion 405 in the mounted state. That is, the seal portion 235 </ b> A is a portion that rises from the inner wall of the head 235 toward the central axis of the head 235.
シール部235Aにおいて最も狭まった部位の内径は、内径d4である。シール部235Aは、X2方向について、頭部235の中心よりもプラス側に位置する。このため、シール部235Aは、X2方向について、大径部213a,213bの範囲内に配置されている。頭部235において、最も広がった部位の内径は、内径d5である。内径d5は、挿入部405の外径D2よりも大きい。
The inner diameter of the narrowest part of the seal portion 235A is an inner diameter d4. The seal portion 235A is located on the plus side of the center of the head 235 in the X2 direction. For this reason, the seal portion 235A is disposed within the range of the large diameter portions 213a and 213b in the X2 direction. In the head 235, the inner diameter of the most spread part is the inner diameter d5. The inner diameter d5 is larger than the outer diameter D2 of the insertion portion 405.
上記のような寸法の関係であるため、挿入部405を頭部235に挿入すると、締まり嵌めが実施されることになる。つまり、挿入部405を頭部235に挿入すると、図21に示すように、シール部235Aが径方向外向きに力を受けて、頭部235が変形する。この変形によって生じる反力と、挿入部405の外周面との接触圧によって、吸引管400と吸引流路部材230との隙間がシールされる。
Because of the dimensional relationship as described above, when the insertion portion 405 is inserted into the head 235, an interference fit is performed. That is, when the insertion portion 405 is inserted into the head portion 235, as shown in FIG. 21, the seal portion 235A receives a force outward in the radial direction, and the head portion 235 is deformed. The clearance between the suction pipe 400 and the suction flow path member 230 is sealed by the reaction force generated by this deformation and the contact pressure between the outer peripheral surface of the insertion portion 405.
大径部213a及び大径部213bが設けられているのは、頭部235と筐体210との接触によって、上記の変形が阻害されないようにするためである。このために、シール部235AのX方向(挿入の方向)の位置は、大径部213a及び大径部213bのX2方向の範囲に含まれる。
The reason why the large-diameter portion 213a and the large-diameter portion 213b are provided is to prevent the deformation from being hindered by the contact between the head 235 and the housing 210. For this reason, the position of the seal portion 235A in the X direction (insertion direction) is included in the range of the large diameter portion 213a and the large diameter portion 213b in the X2 direction.
一方、小径部212a及び小径部212bが設けられているのは、頭部235の径方向の位置を安定させるため、及び装着状態において頭部235が過度に径方向に拡大することを抑制するためである。
On the other hand, the small-diameter portion 212a and the small-diameter portion 212b are provided in order to stabilize the radial position of the head 235 and to suppress the head 235 from excessively expanding in the radial direction in the mounted state. It is.
ユーザーは、フランジ410がリング部材280に接触するまで吸引管400を押し込むことで、吸引管400の装着を正しく実行できる。この際、挿入部405の外周面は、シール部235Aとのみ接触する。よって、挿入部405と頭部235との接触面積は、上記押し込みの深さによっては殆ど変わらず一定である。このため、挿入部405と頭部235との摩擦力は、上記押し込みの深さによっては殆ど変わらない。このため、装着不良が発生しにくい。ここでいう装着不良とは、上記押し込みが深くなることによって、押し込むための力が大きくなり、フランジ410がリング部材280に接触する前にユーザーが押し込みを止めてしまうことである。
The user can correctly mount the suction pipe 400 by pushing the suction pipe 400 until the flange 410 contacts the ring member 280. At this time, the outer peripheral surface of the insertion portion 405 contacts only the seal portion 235A. Therefore, the contact area between the insertion portion 405 and the head portion 235 is constant and hardly changes depending on the depth of the push-in. For this reason, the frictional force between the insertion portion 405 and the head 235 hardly changes depending on the depth of the pushing. For this reason, poor mounting is unlikely to occur. In this case, the mounting failure means that the depth of the above-mentioned pressing increases, the pressing force increases, and the user stops the pressing before the flange 410 contacts the ring member 280.
吸引管400の内径は、内径d6である。吸引流路部材230の内径は、内径d7である。内径d7は、内径d6よりも大きい。つまり、吸引流路部材230の流路径は、吸引管400の流路径よりも大きい。このため、吸引管400を流れてきた固形物などが、吸引流路部材230に流入する際に引っ掛かることが抑制され、吸引としての流れがスムーズになる。
The inner diameter of the suction tube 400 is an inner diameter d6. The inner diameter of the suction channel member 230 is an inner diameter d7. The inner diameter d7 is larger than the inner diameter d6. That is, the flow path diameter of the suction flow path member 230 is larger than the flow path diameter of the suction pipe 400. For this reason, it is suppressed that the solid substance etc. which have flowed through the suction pipe 400 flow into the suction flow path member 230, and the flow as suction becomes smooth.
本発明は、本明細書の実施形態や実施例、変形例に限られるものではなく、その趣旨を逸脱しない範囲において種々の構成で実現できる。例えば、発明の概要の欄に記載した各形態中の技術的特徴に対応する実施形態、実施例、変形例中の技術的特徴は、先述の課題の一部又は全部を解決するために、或いは、先述の効果の一部又は全部を達成するために、適宜、差し替えや、組み合わせを行うことができる。その技術的特徴が本明細書中に必須なものとして説明されていなければ、適宜、削除できる。例えば、以下のものが例示される。
The present invention is not limited to the embodiments, examples, and modifications of the present specification, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in the embodiments described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the effects described above, replacement or combination can be performed as appropriate. If the technical feature is not described as essential in this specification, it can be deleted as appropriate. For example, the following are exemplified.
変形例1を説明する。図22は、分解状態における吸引管400aとハンドピース200との断面を示す。吸引管400aは、実施形態の吸引管400の代わりに用いられるものである。ハンドピース200は、実施形態と同じである。吸引管400aは、挿入部405に凹み405aを備える。凹み405aは、挿入部405の外周に設けられた円環状の窪みである。凹み405aの断面は、円弧形状である。
Modification 1 will be described. FIG. 22 shows a cross section of the suction tube 400a and the handpiece 200 in a disassembled state. The suction tube 400a is used instead of the suction tube 400 of the embodiment. The handpiece 200 is the same as that in the embodiment. The suction tube 400a includes a recess 405a in the insertion portion 405. The recess 405a is an annular recess provided on the outer periphery of the insertion portion 405. The cross section of the recess 405a has an arc shape.
図23は、装着状態における吸引管400aとハンドピース200との断面を示す。吸引管400aを用いる場合、シール部235Aは、挿入部405の挿入が正しい位置まで実施されると、凹み405aに嵌まる。このため、ユーザーは、挿入部405の挿入が正しい位置まで実施されるとクリック感を覚える。よって、ユーザーは、吸引管400aを正しく装着できたことを、触覚で判断しやすくなる。
FIG. 23 shows a cross section of the suction tube 400a and the handpiece 200 in the mounted state. When the suction tube 400a is used, the seal portion 235A fits into the recess 405a when the insertion portion 405 is inserted to the correct position. For this reason, the user feels a click feeling when the insertion of the insertion portion 405 is performed to the correct position. Therefore, the user can easily determine by tactile sense that the suction tube 400a has been correctly attached.
変形例2を説明する。図24は、接続部10を、X2方向のプラス側からマイナス側に見た図である。図25は、接続部10付近におけるハンドピース200bの断面図である。ハンドピース200bは、実施形態のハンドピース200の代わりに用いられる。
Modification 2 will be described. FIG. 24 is a diagram of the connection unit 10 as viewed from the plus side in the X2 direction to the minus side. FIG. 25 is a cross-sectional view of the handpiece 200b in the vicinity of the connecting portion 10. The hand piece 200b is used instead of the hand piece 200 of the embodiment.
ハンドピース200bは、第1ハウジング200cと、第2ハウジング200dとによって構成される。第1ハウジング200cは、リング部材280bを備える。リング部材280bは、段部287を備える。段部287は、抉れ面285の一部である。段部287は、図25に示すように、抉れ面285に段を形成する部位であり、Y-Z2平面に平行な面を形成する。
The handpiece 200b includes a first housing 200c and a second housing 200d. The first housing 200c includes a ring member 280b. The ring member 280b includes a stepped portion 287. The step portion 287 is a part of the bent surface 285. As shown in FIG. 25, the step portion 287 is a portion that forms a step on the rounded surface 285, and forms a plane parallel to the YZ2 plane.
第2ハウジング200dは、凸部290bを備える。凸部290bは、爪部299を備える。爪部は、凸部290bの外周面から、Y方向プラス向きに突き出た部位である。
The second housing 200d includes a convex portion 290b. The convex part 290 b includes a claw part 299. A nail | claw part is a site | part which protruded in the Y direction plus direction from the outer peripheral surface of the convex part 290b.
図25に示すように、第1ハウジング210cと第2ハウジング200dとが結合した状態において、爪部299が段部287に引っ掛かる。このため、たとえネジ221,222,223が緩むようなことがあっても、第1ハウジング210cと第2ハウジング200dとが分離してしまう可能性が低くなる。
As shown in FIG. 25, the claw portion 299 is caught by the step portion 287 in a state where the first housing 210c and the second housing 200d are coupled. For this reason, even if the screws 221, 222, and 223 are loosened, the possibility that the first housing 210c and the second housing 200d are separated is reduced.
以下、他の変形例を説明する。
液体を間欠的に噴射するために、光メーザーやレーザー等の電磁波を照射したり、ヒーター等により液体を加熱したりすることによって液体を噴射する構成を用いてもよい。 Hereinafter, other modifications will be described.
In order to eject the liquid intermittently, a configuration may be used in which the liquid is ejected by irradiating an electromagnetic wave such as an optical maser or laser or heating the liquid with a heater or the like.
液体を間欠的に噴射するために、光メーザーやレーザー等の電磁波を照射したり、ヒーター等により液体を加熱したりすることによって液体を噴射する構成を用いてもよい。 Hereinafter, other modifications will be described.
In order to eject the liquid intermittently, a configuration may be used in which the liquid is ejected by irradiating an electromagnetic wave such as an optical maser or laser or heating the liquid with a heater or the like.
手術装置20は、液体を利用して手術を実施するための装置として、例えば、超音波を利用して生体組織を破砕するタイプのものであってもよい。このような手術装置であっても、供給管205から液体を供給し、液体や切除した生体組織を吸引管400から吸引する構成は、実施形態で説明したものと同様なものを採用してもよい。
The surgical device 20 may be, for example, a device for crushing a living tissue using ultrasonic waves as a device for performing a surgery using a liquid. Even in such a surgical apparatus, a configuration similar to that described in the embodiment may be adopted for supplying liquid from the supply tube 205 and sucking the liquid or excised living tissue from the suction tube 400. Good.
吸引管400が筐体210に着脱可能であることを維持しつつ、リング部材280および挿入部405の形状を変更してもよい。例えば、仮想内接円Vは、リング部材280の貫通孔289に4点以上で接してもよい。
The shape of the ring member 280 and the insertion portion 405 may be changed while maintaining that the suction tube 400 is detachable from the housing 210. For example, the virtual inscribed circle V may contact the through hole 289 of the ring member 280 at four or more points.
装着状態において、凸部290が抉れ面285内に配置されることを変更してもよい。例えば、リング部材280の構成として、抉れ面285を設けなくてもよい。凸部は、装着状態において、挿入部405と接触してもよい。
In the mounted state, it may be changed that the convex portion 290 is arranged in the drooping surface 285. For example, as a configuration of the ring member 280, the crease surface 285 may not be provided. The convex portion may contact the insertion portion 405 in the mounted state.
挿入部405の先端面は、面取りがされていなくてもよい。
吸引管400は、フランジ410を備えなくてもよい。フランジ410が無くても、挿入部405の先端面が頭部235と接触するまで押し込むことによって、吸引管400を正しく装着できる。 The distal end surface of theinsertion portion 405 may not be chamfered.
Thesuction tube 400 may not include the flange 410. Even if the flange 410 is not provided, the suction tube 400 can be correctly mounted by pushing until the distal end surface of the insertion portion 405 contacts the head 235.
吸引管400は、フランジ410を備えなくてもよい。フランジ410が無くても、挿入部405の先端面が頭部235と接触するまで押し込むことによって、吸引管400を正しく装着できる。 The distal end surface of the
The
凸部290の先端面291は、面取りがされていなくてもよい。
凸部290の先端面291は、リング部材280の先端面281から外側に突き出ていてもよい。 Thetip surface 291 of the convex portion 290 may not be chamfered.
Thefront end surface 291 of the convex portion 290 may protrude outward from the front end surface 281 of the ring member 280.
凸部290の先端面291は、リング部材280の先端面281から外側に突き出ていてもよい。 The
The
リング部材280及び凸部290を廃止し、接続部10において第1ハウジング210a及び第2ハウジング210bの形状を、対称に形成してもよい。この場合、第1ハウジング210aは、リング部材280を切除したような形状にしてもよいし、第2ハウジング210bは、凸部290を切除したような形状にしてもよい。さらに、この場合、第1ハウジング210a及び第2ハウジング210bを端部において結合するために、第1ハウジング210a及び第2ハウジング210bの端部に、リング状の別部材を被せてもよい。
The ring member 280 and the convex portion 290 may be eliminated, and the shape of the first housing 210a and the second housing 210b may be formed symmetrically in the connection portion 10. In this case, the first housing 210a may be shaped like the ring member 280 is cut away, or the second housing 210b may be shaped like the raised portion 290 is cut away. Further, in this case, in order to connect the first housing 210a and the second housing 210b at the end portions, ring-shaped separate members may be put on the end portions of the first housing 210a and the second housing 210b.
供給管205は、リング部材280を貫通しなくてもよい。この場合、供給管205の端部であるノズル207は、リング部材280の内部に配置されてもよい。
ハンドピース200は、供給管205を備えなくてもよい。供給管205を保持しない場合、手術装置20は、吸引装置として使用されてもよい。 Thesupply pipe 205 may not penetrate the ring member 280. In this case, the nozzle 207 that is the end of the supply pipe 205 may be disposed inside the ring member 280.
Thehandpiece 200 may not include the supply pipe 205. When the supply tube 205 is not held, the surgical device 20 may be used as a suction device.
ハンドピース200は、供給管205を備えなくてもよい。供給管205を保持しない場合、手術装置20は、吸引装置として使用されてもよい。 The
The
吸引流路部材230と供給管205とによって形成される二重管について、供給管205が外管部材、吸引流路部材230が内管部材であってもよい。
保持部233と外管部材とがなす角度は、先端側205b2と後端側205a2とがなす角度と等しくなくてもよい。
内管部材は、絶縁性の材料で形成されていてもよい。
絶縁部材270は無くてもよい。 Regarding the double pipe formed by the suctionflow path member 230 and the supply pipe 205, the supply pipe 205 may be an outer pipe member and the suction flow path member 230 may be an inner pipe member.
The angle formed between the holdingportion 233 and the outer tube member may not be equal to the angle formed between the front end side 205b2 and the rear end side 205a2.
The inner tube member may be formed of an insulating material.
The insulatingmember 270 may be omitted.
保持部233と外管部材とがなす角度は、先端側205b2と後端側205a2とがなす角度と等しくなくてもよい。
内管部材は、絶縁性の材料で形成されていてもよい。
絶縁部材270は無くてもよい。 Regarding the double pipe formed by the suction
The angle formed between the holding
The inner tube member may be formed of an insulating material.
The insulating
挿入部405と頭部235との締まり嵌めは、吸引流路部材230の流路を軸とし、吸引管400を孔とする嵌め合いでもよい。この場合、頭部235に設けられるシール部235Aは、頭部235の外周面に設けられてもよい。
シール部235Aの代わりに、挿入部405にシール部を設けてもよい。挿入部405に設けられるシール部は、締まり嵌めの相手部材とある頭部235に向かって盛り上がる部位である。つまり、このシール部は、実施形態のように挿入部405が締まり嵌めの軸となる場合は、挿入部405の外周面に設けられ、実施形態とは異なり挿入部405が締まり嵌めの孔となる場合は、挿入部405の内周面に設けられる。
シール部235Aに加えて、挿入部405の外周面に上記のシール部を設けてもよい。 The interference fit between theinsertion portion 405 and the head 235 may be a fit with the suction channel 400 as a hole and the suction tube 400 as a hole. In this case, the seal portion 235 </ b> A provided on the head 235 may be provided on the outer peripheral surface of the head 235.
Instead of theseal portion 235A, a seal portion may be provided in the insertion portion 405. The seal portion provided in the insertion portion 405 is a portion that rises toward the head portion 235 that is an interference fitting counterpart member. That is, this seal portion is provided on the outer peripheral surface of the insertion portion 405 when the insertion portion 405 is an interference fit shaft as in the embodiment, and unlike the embodiment, the insertion portion 405 becomes an interference fit hole. In the case, it is provided on the inner peripheral surface of the insertion portion 405.
In addition to theseal portion 235 </ b> A, the seal portion may be provided on the outer peripheral surface of the insertion portion 405.
シール部235Aの代わりに、挿入部405にシール部を設けてもよい。挿入部405に設けられるシール部は、締まり嵌めの相手部材とある頭部235に向かって盛り上がる部位である。つまり、このシール部は、実施形態のように挿入部405が締まり嵌めの軸となる場合は、挿入部405の外周面に設けられ、実施形態とは異なり挿入部405が締まり嵌めの孔となる場合は、挿入部405の内周面に設けられる。
シール部235Aに加えて、挿入部405の外周面に上記のシール部を設けてもよい。 The interference fit between the
Instead of the
In addition to the
頭部235は、収容空間Sに収容されなくてもよい。例えば、頭部235がリング部材280の外側に配置されてもよい。
The head 235 may not be accommodated in the accommodation space S. For example, the head 235 may be disposed outside the ring member 280.
実施形態においては間欠的に液体を噴射する構成を採用したが、連続的に液体を噴射する機能を備えた構成を採用してもよい。例えば、間欠的な噴射と連続的な噴射とを使い分けることができる構成でもよい。実施形態のハードウエア構成を利用して連続的な噴射を実施するために、駆動部の駆動を停止または低下させた状態でチューブポンプのみを駆動させてもよい。この構成の場合、間欠的な噴射を切除のために実施し、連続的な噴射を洗浄のために実施してもよい。
或いは、連続的な噴射のみが実施できる構成でもよい。この構成の場合、連続的な噴射によって切除を実施してもよい。
噴射する液体は、純水でもよいし薬液でもよい。 In the embodiment, the configuration in which the liquid is intermittently ejected is employed, but a configuration having a function of ejecting the liquid continuously may be employed. For example, the structure which can selectively use intermittent injection and continuous injection may be sufficient. In order to perform continuous injection using the hardware configuration of the embodiment, only the tube pump may be driven in a state where the drive of the drive unit is stopped or lowered. In this configuration, intermittent spraying may be performed for excision and continuous spraying may be performed for cleaning.
Or the structure which can implement only continuous injection may be sufficient. In the case of this configuration, the ablation may be performed by continuous injection.
The liquid to be ejected may be pure water or a chemical solution.
或いは、連続的な噴射のみが実施できる構成でもよい。この構成の場合、連続的な噴射によって切除を実施してもよい。
噴射する液体は、純水でもよいし薬液でもよい。 In the embodiment, the configuration in which the liquid is intermittently ejected is employed, but a configuration having a function of ejecting the liquid continuously may be employed. For example, the structure which can selectively use intermittent injection and continuous injection may be sufficient. In order to perform continuous injection using the hardware configuration of the embodiment, only the tube pump may be driven in a state where the drive of the drive unit is stopped or lowered. In this configuration, intermittent spraying may be performed for excision and continuous spraying may be performed for cleaning.
Or the structure which can implement only continuous injection may be sufficient. In the case of this configuration, the ablation may be performed by continuous injection.
The liquid to be ejected may be pure water or a chemical solution.
これまで説明した内容において、ソフトウエアによって実現された機能及び処理の一部又は全部は、ハードウエアによって実現されてもよい。また、ハードウエアによって実現された機能及び処理の一部又は全部は、ソフトウエアによって実現されてもよい。ハードウエアとしては、例えば、集積回路、ディスクリート回路、または、それらの回路を組み合わせた回路モジュールなど、各種回路を用いることができる。
In the contents described so far, some or all of the functions and processes realized by software may be realized by hardware. In addition, some or all of the functions and processes realized by hardware may be realized by software. As the hardware, for example, various circuits such as an integrated circuit, a discrete circuit, or a circuit module obtained by combining these circuits can be used.
20…手術装置、30…制御装置、31…アクチュエーター用ケーブル、31a…第1ケーブル、31b…第2ケーブル、32…ポンプ用ケーブル、35…フットスイッチ、40…吸引器、41…吸引チューブ、50…液体供給装置、51…給水バッグ、52…スパイク針、53a…第1コネクター、53b…第2コネクター、53c…第3コネクター、53d…第4コネクター、53e…第5コネクター、54a…第1給水チューブ、54b…第2給水チューブ、54c…第3給水チューブ、54d…第4給水チューブ、55…ポンプチューブ、56…閉塞検出機構、57…フィルター、60…チューブポンプ、60a…ステーター、60b…ローター、62…供給モーター、200…ハンドピース、200b…ハンドピース、200c…第1ハウジング、200d…第2ハウジング、205…供給管、205a1…分岐部、205a2…後端側、205b1…内管部、205b2…先端側、207…ノズル、210…筐体、210a…第1ハウジング、210b…第2ハウジング、210c…第1ハウジング、211a…ストッパー、211b…ストッパー、212a…小径部、212b…小径部、213a…大径部、213b…大径部、214a…壁、214b…壁、221…ネジ、221a…ネジ孔、222…ネジ、222a…ネジ孔、223…ネジ、223a…ネジ孔、230…吸引流路部材、231…後端側、232…先端側、233…保持部、233a…開放端、233b…孔、235…頭部、235A…シール部、240…液体室、241…入口流路、250…流路接続部材、253…雌ネジ、255…孔、260…ダイヤフラム、270…絶縁部材、271…端部、280…リング部材、280b…リング部材、281…先端面、282…R部、283…円弧面、284…平面、285…抉れ面、287…段部、288…内周面、289…貫通孔、290…凸部、290b…凸部、291…先端面、292…斜面、293…外周面、294…内周面、299…爪部、300…駆動部、351…円筒部材、351a…雄ネジ、351b…雌ネジ、353…固定部材、353a…雄ネジ、360…圧電素子、362…ピストン、400…吸引管、400a…吸引管、405…挿入部、410…フランジ、420…主部、500…吸引力調整機構、510…吸引流路部材、522…孔。
DESCRIPTION OF SYMBOLS 20 ... Surgical device, 30 ... Control apparatus, 31 ... Actuator cable, 31a ... 1st cable, 31b ... 2nd cable, 32 ... Pump cable, 35 ... Foot switch, 40 ... Aspirator, 41 ... Suction tube, 50 Liquid supply device 51 Water supply bag 52 Spike needle 53a First connector 53b Second connector 53c Third connector 53d Fourth connector 53e Fifth connector 54a First water supply Tube, 54b ... 2nd water supply tube, 54c ... 3rd water supply tube, 54d ... 4th water supply tube, 55 ... Pump tube, 56 ... Blockage detection mechanism, 57 ... Filter, 60 ... Tube pump, 60a ... Stator, 60b ... Rotor 62 ... Supply motor, 200 ... Handpiece, 200b ... Handpiece, 200c First housing, 200d ... second housing, 205 ... supply pipe, 205a1 ... branch part, 205a2 ... rear end side, 205b1 ... inner pipe part, 205b2 ... front end side, 207 ... nozzle, 210 ... housing, 210a ... first Housing 210b 2nd housing 210c 1st housing 211a Stopper 211b Stopper 212a Small diameter 212b Small diameter 213a Large diameter 213b Large diameter 214a Wall 214b Walls, 221... Screws, 221a .. screw holes, 222... Screws, 222a... Screw holes, 223. Part, 233a ... open end, 233b ... hole, 235 ... head, 235A ... seal part, 240 ... liquid chamber, 241 ... inlet channel, 250 ... Road connecting member, 253 ... female screw, 255 ... hole, 260 ... diaphragm, 270 ... insulating member, 271 ... end, 280 ... ring member, 280b ... ring member, 281 ... tip surface, 282 ... R part, 283 ... arc Surface, 284 ... Flat surface, 285 ... Curved surface, 287 ... Stepped portion, 288 ... Inner peripheral surface, 289 ... Through hole, 290 ... Convex portion, 290b ... Convex portion, 291 ... Tip surface, 292 ... Slope, 293 ... Outer Surface, 294 ... Inner peripheral surface, 299 ... Claw part, 300 ... Drive part, 351 ... Cylindrical member, 351a ... Male screw, 351b ... Female screw, 353 ... Fixing member, 353a ... Male screw, 360 ... Piezoelectric element, 362 ... Piston, 400 ... suction pipe, 400a ... suction pipe, 405 ... insertion part, 410 ... flange, 420 ... main part, 500 ... suction force adjusting mechanism, 510 ... suction channel member, 522 ... hole.
Claims (9)
- 手術に利用される液体が流れる管を少なくとも1つ保持し、ユーザーによって把持される筐体を備え、
前記筐体は、第1ハウジングと、前記第1ハウジングと結合された第2ハウジングと、を備え、
前記第1ハウジングは、端部に、前記管が貫通する又は前記管の端部が内部に配置されるリング部材を備え、
前記第2ハウジングは、端部に、前記リング部材に挿入されている凸部を備える
手術用ハンドピース。 Holding at least one tube through which liquid used for surgery flows and having a housing grasped by a user;
The housing includes a first housing and a second housing coupled to the first housing,
The first housing includes, at an end portion thereof, a ring member through which the tube penetrates or an end portion of the tube is disposed.
The second housing includes a convex portion inserted into the ring member at an end portion thereof. - 前記リング部材は、内周面において、外周面に向かって抉れている抉れ面を備え、
前記凸部は、前記抉れ面に挿入されている
請求項1に記載の手術用ハンドピース。 The ring member includes a curled surface that curls toward the outer peripheral surface on the inner peripheral surface,
The surgical handpiece according to claim 1, wherein the convex portion is inserted into the twisted surface. - 前記凸部は、前記挿入の方向の先端面が面取りされている
請求項1又は請求項2に記載の手術用ハンドピース。 The surgical handpiece according to claim 1, wherein the convex portion has a chamfered tip surface in the insertion direction. - 前記挿入の方向について、前記凸部の先端面は、前記リング部材の先端面よりも前記筐体の内部側に引っ込んでいる
請求項1から請求項3までの何れか一項に記載の手術用ハンドピース。 4. The surgical operation according to claim 1, wherein a distal end surface of the convex portion is retracted to an inner side of the housing than a distal end surface of the ring member with respect to the insertion direction. Hand piece. - 前記管は、液体を切除対象部位に供給するための供給管である
請求項1から請求項4までの何れか一項に記載の手術用ハンドピース。 The surgical handpiece according to any one of claims 1 to 4, wherein the tube is a supply tube for supplying a liquid to a site to be excised. - 前記供給管は、液体を間欠的に噴射するためのものである
請求項5に記載の手術用ハンドピース。 The surgical handpiece according to claim 5, wherein the supply tube is for ejecting liquid intermittently. - 前記管は、液体を吸引するための吸引管である
請求項1から請求項6までの何れか一項に記載の手術用ハンドピース。 The surgical handpiece according to any one of claims 1 to 6, wherein the tube is a suction tube for sucking a liquid. - 請求項5又は請求項6に記載の手術用ハンドピースを備えた液体噴射装置。 A liquid ejecting apparatus comprising the surgical handpiece according to claim 5 or 6.
- 請求項7に記載の手術用ハンドピースを備えた吸引装置。 A suction device comprising the surgical handpiece according to claim 7.
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JP2016-036799 | 2016-02-29 | ||
JP2016036799A JP2017153521A (en) | 2016-02-29 | 2016-02-29 | Surgical handpiece, liquid injection device, and suction device |
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WO2017150147A1 true WO2017150147A1 (en) | 2017-09-08 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113795207A (en) * | 2019-06-10 | 2021-12-14 | 新加坡施乐辉亚太有限公司 | Water jet debridement and wound bed preparation |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003519525A (en) * | 2000-01-10 | 2003-06-24 | ハイドロシジョン・インコーポレーテッド | Surgical instrument with integrated electrocautery tool |
JP2014211108A (en) * | 2013-04-18 | 2014-11-13 | セイコーエプソン株式会社 | Liquid injection device and medical device |
JP2015077407A (en) * | 2013-10-18 | 2015-04-23 | エルベ エレクトロメディジン ゲゼルシャフト ミット ベシュレンクテル ハフツングERBE ELEKTROMEDIZIN GmbH | Adapter element, hf surgical instrument, adapter attachment and system |
-
2016
- 2016-02-29 JP JP2016036799A patent/JP2017153521A/en active Pending
-
2017
- 2017-02-10 WO PCT/JP2017/004971 patent/WO2017150147A1/en active Application Filing
- 2017-02-24 TW TW106106373A patent/TW201731461A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003519525A (en) * | 2000-01-10 | 2003-06-24 | ハイドロシジョン・インコーポレーテッド | Surgical instrument with integrated electrocautery tool |
JP2014211108A (en) * | 2013-04-18 | 2014-11-13 | セイコーエプソン株式会社 | Liquid injection device and medical device |
JP2015077407A (en) * | 2013-10-18 | 2015-04-23 | エルベ エレクトロメディジン ゲゼルシャフト ミット ベシュレンクテル ハフツングERBE ELEKTROMEDIZIN GmbH | Adapter element, hf surgical instrument, adapter attachment and system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113795207A (en) * | 2019-06-10 | 2021-12-14 | 新加坡施乐辉亚太有限公司 | Water jet debridement and wound bed preparation |
Also Published As
Publication number | Publication date |
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TW201731461A (en) | 2017-09-16 |
JP2017153521A (en) | 2017-09-07 |
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