JP4628598B2 - Medical device, medical device main unit and medical device drive unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
A medical device having a main body unit including a treatment member including an operation member capable of mechanical operation, and a drive unit including a drive mechanism that outputs a mechanical drive force for operating the operation member; and The present invention relates to a main unit and a drive unit in this type of medical device.
[0002]
[Prior art]
Various medical devices are used for diagnosis and treatment. The medical device includes a treatment member including an operation member capable of mechanical operation, for example, reciprocation, and a drive unit that outputs a mechanical driving force for operating the operation member. There are medical devices.
[0003]
A drive unit that requires aseptic operation to prevent infection is sterilized by autoclave sterilization or ethylene oxide gas sterilization, and then used for diagnosis and treatment.
[0004]
However, in a drive unit having an advanced function, it may be difficult to perform autoclave sterilization at a high temperature and high humidity due to the performance of members and parts provided in the drive unit. On the other hand, although ethylene oxide gas sterilization does not result in high temperature and high humidity, it requires large-scale equipment as compared with autoclave sterilization, and further, treatment of sterilization gas is necessary from the viewpoint of environmental measures. For this reason, ethylene oxide gas sterilization is not so popular.
[0005]
Therefore, when it is difficult to sterilize the drive unit such as an intravascular ultrasound catheter, the sterilized flexible bag covers the non-sterile drive unit, thereby performing aseptic operation. .
[0006]
[Problems to be solved by the invention]
However, in order to perform aseptic operation, it is necessary to cover the unsterilized drive part with a sterilized flexible bag, and there is a problem that preparation work in the previous stage of diagnosis and treatment is complicated.
[0007]
In addition, even if the bag has flexibility, since the entire drive unit is covered with the flexible bag, there is a problem that the operability when the surgeon operates the medical device is lowered.
[0008]
The present invention has been made in view of the above problems, and it is an object of the present invention to provide a medical device that does not require complicated preparation work when performing aseptic operations and that does not cause a decrease in operability. And
[0009]
[Means for Solving the Problems]
The object of the present invention is achieved by the following means.
[0010]
  (1) A treatment member in which an operation member capable of mechanical operation is housed, and the treatment member communicates with each other inside.IntegrallyA cover part that is attached and can be opened and closed, and is housed in the cover part.And is integrally assembled to the cover part,A main body unit including a transmission member mechanically connected to the actuating member;
  A drive unit that includes a drive mechanism that outputs a mechanical drive force; a casing that includes the drive mechanism; and an output member that is connected to the drive mechanism and outputs the drive force to the outside of the casing. Have
  The drive unit is detachably housed in the cover portion of the main unit, and the output member is mechanically connected to the transmission member of the main unit so as to be detachable.,
  The actuating member is mechanically operated by transmitting the driving force output by the drive mechanism to the actuating member via the transmission member mechanically connected to the output member.Medical device characterized by that.
[0011]
(2) The main body unit is further disposed on the treatment member and is capable of transmitting an electrical signal;
A first input / output part disposed in the cover part and electrically connected to the electrical actuating part,
The drive unit further includes a second input / output unit that is electrically connected to an external signal line capable of transmitting an electrical signal and provided to the casing so as to face the outside,
The drive unit is housed in the cover portion of the main unit, and the second input / output unit is detachably electrically connected to the first input / output unit of the main unit. The medical device according to 1).
[0012]
(3) The medical device according to (1), wherein the main unit is sterilized.
[0013]
(4) The medical device according to (1), wherein the cover portion is configured by a hard case.
[0014]
(5) The cover unit of the main unit has a lock member that engages with an engagement member provided in the casing of the drive unit and holds a closed state (1) ) Medical device.
[0015]
(6) The medical device according to (2), wherein the electrical operation unit is a temperature sensor.
[0016]
  (7) In a medical device main body unit to which a drive unit including a drive mechanism that outputs a mechanical drive force is detachably attached,
  A treatment member containing an actuating member capable of mechanical movement; and
  The treatment member communicates with the insideIntegrallyA cover part that can be attached and opened and closed,
  Stored in the coverAnd is integrally assembled to the cover part,A transmission member mechanically connected to the actuating member,
  The drive unit is detachably accommodated in the cover portion, and the driving force of the drive mechanism is transmitted to the transmission member.Via the actuating memberCommunicated toThereby actuating the actuating member mechanicallyA medical device main unit.
[0017]
  (8) A treatment member in which an operation member capable of mechanical operation is housed, and the treatment member communicates with each other.IntegrallyA cover part that is attached and can be opened and closed, and is housed in the cover part.And is integrally assembled to the cover part,A drive unit for a medical device that is detachably attached to a main unit including a transmission member mechanically connected to the operating member;
  A drive mechanism that outputs a mechanical drive force;
  A casing containing the drive mechanism;
  Connected to the driving mechanism and outputs the driving force to the outside of the casingAnd mechanically removably connected to the transmission member of the main unit.An output member,
  Removably housed in the cover portion of the main body unit, the driving force of the driving mechanism is used as the output member.And the transmission member mechanically connected toTo the operation member of the main body unit viaThereby operating the actuating member mechanically.A medical device drive unit characterized by that.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
A case where the present invention is applied to a side-irradiation type laser irradiation apparatus which is one of medical devices will be described as an example.
[0019]
1 is a perspective view showing a laser irradiation apparatus 10, FIG. 2 is a cross-sectional view of a tip portion of the laser irradiation apparatus 10, FIG. 3 is a schematic view seen from below in FIG. 2, and FIG. FIG. 5 is a sectional view taken along line 5-5 in FIG.
[0020]
The side-irradiation type laser irradiation apparatus 10 shown in FIGS. 1 to 5 irradiates a living tissue with a laser beam and is used, for example, for treatment of benign prostatic hyperplasia. The laser irradiation apparatus 10 includes a long shaft-shaped insertion portion 101 that can be inserted into a living body, and a reciprocating laser emitting portion 120 that is provided in the insertion portion 101 and emits laser light toward a side window 113. And having. In the present embodiment, the insertion unit 101 corresponds to a treatment member that makes a diagnosis or treatment by contacting or inserting into a living tissue, and the laser emitting unit 120 corresponds to an operation member that can perform a mechanical operation.
[0021]
First, the internal configuration of the insertion unit 101 will be described.
[0022]
Referring to FIG. 2, insertion portion 101 includes a long inner layer pipe 110, and laser emission portion 120 has a smooth laser reflection surface (mirror) 121 that reflects laser light.
[0023]
The inner layer pipe 110 of the insertion part 101 is comprised from hard tubular bodies, such as stainless steel. An opening 111 for transmitting laser light is formed on the tip side of the inner layer pipe 110. The entire inner layer pipe 110 including the opening 111 is covered with an outer layer tube 112 having good laser transmittance. The opening 111 covered with the outer tube 112 constitutes the side window 113.
[0024]
A cap 130 is attached to the tip of the inner layer pipe 110. The cap 130 is provided with a front window 131 for observing the front when the insertion unit 101 is inserted into the living body. For example, a light-transmitting plate 132 with good light transmission is fitted and fixed to the front window 131. In addition, a pair of wall members 140 and 141 defining an internal space are provided inside the distal end portion of the insertion portion 101 (see FIG. 4).
[0025]
The laser emitting unit 120 is made of, for example, resin, glass, metal, or a composite material thereof. Specifically, for example, a metal base material with a mirror-polished surface, a resin or metal base material with a thin film of metal or the like formed as a mirror surface, a glass mirror, etc. Examples include those obtained by bonding a material to a base material such as resin or metal.
[0026]
An optical fiber 122 that transmits laser light is arranged inside the insertion portion 101. The optical fiber 122 receives a driving force from a driving unit, which will be described later, and reciprocates along the axial direction of the insertion portion 101. The optical fiber 122 is covered with a protective pipe made of, for example, stainless steel so as not to be damaged or curved in the insertion portion 101 except for the distal end portion. A fixing member 123 to which the laser emitting unit 120 is rotatably attached is fixed near the tip of the optical fiber 122. A monorail pipe 125 is inserted through the through hole 124 formed in the fixing member 123. The monorail pipe 125 is disposed in parallel with the axis of the insertion portion 101. As the optical fiber 122 reciprocates, the fixing member 123 slides stably along the monorail pipe 125 in parallel with the axis of the insertion portion 101. The base end of the optical fiber 122 drawn from the cover 102 is connected to a laser light source device (not shown) via an optical connector.
[0027]
Protrusions 126 are provided on both sides of the tip of the laser emitting unit 120. The protrusion 126 is slidably supported by a pair of grooves 142 formed in the wall members 140 and 141. The groove 142 is inclined with respect to the axial direction of the insertion portion 101. Therefore, the laser emitting unit 120 reciprocates while the inclination angle is changed by the action of the groove 142 as the optical fiber 122 reciprocates. In FIG. 2, the positions of the laser emitting unit 120 and the fixing member 123 indicated by solid lines are the rear end positions of these members 120 and 123.
[0028]
A cleaning liquid can be supplied into the monorail pipe 125. This cleaning liquid is bent toward the front window 131 by the flow path 133 formed in the cap 130, and then flows so as to clean the outside of the translucent plate 132. As the cleaning liquid, it is preferable to use a sterilized liquid such as sterilized purified water or sterilized physiological saline.
[0029]
As shown in FIGS. 4 and 5, the inside of the insertion portion 101 is partitioned by a pair of wall members 140 and 141, and a lumen 150 for injecting cooling water and a lumen 151 for discharging are formed. The cooling water is used to cool the surface of the living tissue that receives the laser light, the laser emitting unit 120, and the like. The lumen 150 is connected to the water supply tube 301, and the lumen 151 is connected to the drainage tube 302 (see FIG. 1). Cooling water supplied through the water supply tube 301 flows into the lumen 150, then flows into the lumen 151 near the tip of the insertion portion 101, and flows out through the drainage tube 302. A part of the injected cooling water also flows into the lumen 152 from the hole 143 formed in the wall member 141. This cooling water also flows into the lumen 151 from the hole 134.
[0030]
By circulating the cooling water inside the insertion portion 101, the cooling efficiency can be improved. The temperature of the cooling water is not particularly limited as long as damage to the laser emitting unit 120 and the irradiation surface of the living tissue due to laser light irradiation can be reduced, but is preferably 0 to 37 ° C., more preferably less likely to cause frostbite and cooling. It is 8-25 ° C., which is highly effective. In order to prevent the backflow of cooling water, check valves are preferably provided in various lumens provided in the insertion portion 101. As the cooling water, it is preferable to use a sterilized liquid such as sterilized purified water or sterilized physiological saline.
[0031]
The laser irradiation apparatus 10 includes a detection unit 160 that detects the reciprocating motion of the laser emitting unit 120 and detects the surface temperature of the living tissue (see FIG. 2). The detection unit 160 includes a first sensor 161 that detects the reciprocating motion of the laser emitting unit 120 and a second sensor 162 that detects the surface temperature of the living tissue to be heat-treated, that is, the temperature of the urethra wall. The sensors 161 and 162 are installed using an adhesive 163. Examples of the sensors 161 and 162 include, but are not limited to, thermistors, thermocouples, platinum resistance thermometers, and the like.
[0032]
As shown in FIG. 3, the first sensor 161 is installed in the vicinity of the rear end position in the reciprocating motion of the laser emitting unit 120, that is, in the vicinity of the rear end portion of the side window 113. The first sensor 161 is located in the optical path of the laser light reflected by the laser emitting unit 120 at the rear end position. When the first sensor 161 is irradiated with laser light, the temperature of the first sensor 161 increases rapidly. For this reason, if the laser emitting unit 120 normally reciprocates, a periodic peak appears in the temperature detected by the first sensor 161.
[0033]
On the other hand, the second sensor 162 is installed in the vicinity of the central side portion of the side window 113. The second sensor 162 is not located in the optical path of the laser light. Thereby, the temperature of the urethra wall can be reliably detected without disturbing the irradiation of the laser beam. If the laser output value is an appropriate value, the temperature detected by the second sensor 162 indicates a temperature within a predetermined setting range.
[0034]
Based on the temperature of the first sensor 161 and the second sensor 162, the operating state of the laser irradiation apparatus 10 can be diagnosed. That is, when a periodic peak appears in the temperature detected by the first sensor 161, the temperature at the peak is within the set range, and the urethral wall temperature detected by the second sensor 162 is within the set range. This is when the laser emitting unit 120 normally reciprocates and the laser output value is appropriate. In such a case, the moving irradiation of the laser beam is diagnosed as appropriate.
[0035]
Referring to FIG. 1, the laser irradiation apparatus 10 is provided with an observation apparatus 400 that performs observation of a biological tissue surface layer. The observation apparatus 400 includes an endoscope 401 that is detachable from the laser irradiation apparatus 10. The endoscope 401 is inserted from the base end side of the cover part 102, and is installed so that the inside of the insertion part 101 can move to a longitudinal direction. The endoscope 401 includes, for example, an optical fiber bundle, a protective tube, and an imaging lens provided at the tip. A camera head 402 is attached to the proximal end side of the endoscope 401, and an image can be sent through the camera signal lead 403. The optical fiber of the endoscope 401 also has a function of irradiating illumination light sent through the light guide 404. The endoscope 401, the camera head 402, and the light guide 404 are connected to a slide lever 410 that penetrates the cover 102 so as to be slidable. As a result, even if the endoscope 401 has a small diameter, a problem that the endoscope 401 is bent or bent due to the weight of the camera head 402 and the light guide 404 is prevented.
[0036]
The endoscope 401 has a field of view suitable for obtaining an observation field from both the side window 113 and the front window 131. Therefore, the endoscope 401 observes the surface layer of the living tissue irradiated with the laser light through the side window 113 or the front window 131, positioning of the insertion portion 101 based on the endoscope observation, and visual observation of the laser light irradiation position. Can be confirmed. 4 and 5, the endoscope 401 is not shown.
[0037]
FIG. 6 is a diagram schematically showing the path of the laser beam when the laser emitting unit 120 is positioned at the distal end position P1, the intermediate position P2, and the proximal end position P3 during the reciprocating motion.
[0038]
When the laser emitting unit 120 is located at the distal end position P1, the laser emitting unit 120 stands up in a direction nearly perpendicular to the axial direction of the insertion unit 101, and reflects the laser light with a small reflection angle. Further, when the laser emitting unit 120 is located at the proximal end position P3, the laser emitting unit 120 is inclined in a direction nearly parallel to the axial direction of the insertion unit 101, and reflects the laser light with a large reflection angle. Therefore, when the laser emission unit 120 reciprocates while changing the tilt angle, the emission position of the laser light always moves, but the optical axis of the laser light moves to the target point 1001 inside the target part 1000 that is the heating part. Always concentrate. That is, the laser light is continuously irradiated only on the target point 1001 and is intermittently irradiated on other living tissues such as the surface layer. Therefore, the target point 1001 is heated by the irradiated laser beam and reaches a desired temperature. On the other hand, other living tissues such as the surface layer have a short amount of time to receive the laser beam, and therefore generate little heat and are hardly heated.
[0039]
During the heat treatment as described above, the laser emitting unit 120 is reciprocally driven in the axial direction at a period of 0.1 to 10 Hz, preferably 1 to 6 Hz.
[0040]
As the laser light applied to the living tissue, divergent light, parallel light, or convergent light can be used. In order to make the laser light into convergent light, an optical system for making the laser light into convergent light is provided in the middle of the optical path of the laser light. Moreover, the laser beam used will not be specifically limited if it has a living body deepness property. However, the wavelength of the laser beam is preferably about 750 to 1300 nm or about 1600 to 1800 nm because it has particularly excellent living body penetration. Examples of the laser light source device that generates laser light in the wavelength range include a gas laser such as a He—Ne laser, a solid-state laser such as an Nd—YAG laser, and a semiconductor laser such as a GaAlAs laser.
[0041]
The outer diameter of the insertion portion 101 is not particularly limited as long as it can be inserted into a body cavity. However, the outer diameter of the insertion portion 101 is preferably about 2 to 20 mm, and more preferably about 3 to 8 mm.
[0042]
7 is a perspective view showing a state in which the cover unit 102 of the main unit 100 of the laser irradiation apparatus 10 is opened and the drive unit 200 is attached in the cover unit 102. FIGS. 8A and 8B are views of the main unit. FIG. 9 is a perspective view for explaining the configuration of the rear portion of the unit 100 and the drive unit 200 and a view seen from the rear, FIG. 9 is a perspective view showing the main unit 100 before the drive unit 200 is attached, and FIG. FIG. 10B is a front view showing the main body unit 100 with the cover portion 102 opened. FIG. 10B shows a slider that is disposed in the cover portion 102 and mechanically connected to the laser emitting portion 120. It is a perspective view shown with it. FIG. 11 is a perspective view showing the drive unit 200 to which the slide lever 410 for fixing the endoscope 401 is connected, and FIGS. 12A and 12B are a perspective view and a front view showing the drive unit 200. FIG. FIG. 13 is a diagram showing the drive mechanism 210 of the drive unit 200 and the slide lever 410 to which the endoscope 401 is fixed.
[0043]
With reference to FIGS. 7, 8 </ b> A, and 8 </ b> B, the laser irradiation apparatus 10 of this embodiment includes a main body unit 100 and a drive unit 200 that is detachably housed in the main body unit 100. The main unit 100 includes an insertion part 101 having a laser emitting part 120 capable of mechanical operation, and a cover part 102 to which the insertion part 101 is attached and which can be opened and closed. The surgeon grasps the cover unit 102 and performs operations such as insertion and rotation of the insertion unit 101. The drive unit 200 includes a drive mechanism 210 (see FIG. 13) that outputs a mechanical drive force, and a casing 202 in which the drive mechanism 210 is built.
[0044]
As shown also in FIG. 9, the cover portion 102 of the main unit 100 includes a first case 171 and a second case 172 that are connected to each other through a hinge portion 170 so as to be opened and closed. Each of the cases 171 and 172 is a hard case formed from a relatively hard material. Since the cover part 102 is composed of a hard case, the cover part 102 is not deformed when the operator holds and operates the cover part 102. Concave portions 173 and 174 that match the outer shape of the casing of the drive unit 200 are formed on the inner surfaces of the cases 171 and 172. Is formed. The cover portion 102 is formed in a substantially cylindrical shape from the base end to the center portion, and in a tapered shape from the center portion to the tip end. The shape and dimensions of the cover portion 102 are determined so that the operator can easily hold and operate the cover portion 102. The material of each case 171 and 172 is not particularly limited, and an appropriate material can be used as long as the function as a hard case can be exhibited. For example, a hard resin material etc. are mentioned.
[0045]
7 to 9, reference numeral 185 indicates a window through which the slide lever 410 is inserted, and reference numeral 186 indicates a through hole through which the endoscope 401 fixed to the slide lever 410 is inserted. Yes.
[0046]
With reference to FIG. 10A, the base end portion of the insertion portion 101 is assembled in a recess formed in the front wall 175 of the first case 171 and is fixed to the first case 171. A plurality of through holes are formed in the rear wall 176 of the first case 171 along the circumferential direction, and the optical fiber 122, the water supply tube 301, the drainage tube 302, the cleaning liquid injection tube 303, and the like are inserted therethrough (FIG. (See also 8). A vertical wall 177 that forms a space with the outer peripheral wall is provided in a substantially upper half of the first case 171. The space is formed on the back side of the vertical wall 177 in FIG. This space is used as a storage space for the optical fiber 122 inserted through the rear wall 176. The optical fiber 122 and the like are guided into the insertion portion 101 through the storage space.
[0047]
The first and second temperature sensors 161 and 162 arranged in the insertion unit 101 function as an electrical operation unit capable of transmitting an electrical signal. The electric signal lines 164 connected to these sensors 161 and 162 are taken out from the proximal end of the insertion portion 101 and guided to the storage space. A signal connector 165 as a first input / output unit electrically connected to the sensors 161 and 162 is disposed in the cover unit 102. Specifically, the signal connector 165 is provided on the vertical wall 177 in the first case 171 and is electrically connected to the sensors 161 and 162 via the electric signal line 164.
[0048]
A slider 180 serving as a transmission member mechanically connected to the laser emitting unit 120 is disposed in the cover unit 102. Specifically, a pair of guide plates 183 are provided in a substantially central portion of the first case 171 along the horizontal direction in FIG. Between the guide plates 183, a thin plate slider 180 shown in FIG. 5B is held slidably along the axial direction of the insertion portion 101. An optical fiber 122 taken out from the proximal end of the insertion portion 101 is fixed to the slider 180. Therefore, when the slider 180 reciprocates, the reciprocating motion is transmitted to the laser emitting unit 120 mechanically connected via the optical fiber 122. As described above, the laser emitting unit 120 reciprocates while changing the tilt angle.
[0049]
The slider 180 receives the reciprocating motion output from the drive unit 200 and reciprocates. For this reason, as shown in FIG. 10B, an engagement groove 181 that engages with a reciprocating hook 215 of the drive unit 200 is provided on the side of the slider 180. Further, the slider 180 is provided with a shutter 182 that protrudes sideways. The shutter 182 is detected by a sensor 230 (see FIG. 11) disposed in the drive unit 200. The sensor 230 is provided for confirming the reciprocation of the slider 180 and monitoring whether the reciprocation is transmitted to the laser emitting unit 120.
[0050]
Of the entire length of the optical fiber 122, the portion from the portion fixed to the slider 180 to the portion penetrating the rear wall 176 of the first case 171 is wound in a loop shape or stored in the storage space with some slack. Yes. Therefore, the reciprocating motion of the slider 180 is absorbed by the above-described portion of the optical fiber 122 and is not transmitted to the optical fiber 122 extending outside the cover portion 102.
[0051]
Referring to FIGS. 11 and 12, casing 202 of drive unit 200 has an upper casing 203 and a lower casing 204. The upper casing 203 accommodates a driving mechanism 210 that outputs a mechanical driving force, in this embodiment, a driving force for reciprocatingly driving the laser emitting portion 120 in the longitudinal direction of the insertion portion 101. The lower casing 204 includes an upper case 205 and a lower case 206, and a slider 411 (see FIG. 13) attached to the tip of the slide lever 410 is slidably accommodated.
[0052]
As shown in FIG. 13, the drive mechanism 210 is a general crank mechanism that converts rotational motion into reciprocating motion. The drive mechanism 210 includes a motor 211, a reduction gear train (not shown) connected to the output shaft of the motor 211, a rotatable disk 212, and a crank lever 213 whose one end is rotatably connected to a side surface of the disk 212. And a pin 214 attached to the other end of the crank lever 213, and a hook 215 (see FIG. 10B and FIG. 11) as an output member attached to the pin 214. A guide groove 216 extending in parallel with the axial direction of the insertion portion 101 is formed in the upper casing 203, and a pin 214 is slidably fitted in the guide groove 216. The hook 215 faces the outside of the upper casing 203 (see FIG. 11). The reduction gear train is composed of a worm gear attached to the output shaft of the motor 211 and the like. The disk 212 is rotated by the rotational motion of the motor 211 transmitted through the reduction gear train. As the disk 212 rotates, the pin 214 slides in the guide groove 216 via the crank lever 213, and the hook 215 reciprocates in parallel with the axial direction of the insertion portion 101. As a result, a driving force for reciprocating the laser emitting unit 120 is output to the outside of the casing 202.
[0053]
When the drive unit 200 is housed in the cover portion 102, the hook 215 engages with the engagement groove 181 of the slider 180. When the hook 215 is mechanically connected to the slider 180, the reciprocating motion of the hook 215 is transmitted to the slider 180. As a result, the laser emitting unit 120 reciprocates. The laser emitting unit 120 is located at the distal end position P1 when the pin 214 moves to the foremost end in the guide groove 216, and is located at the proximal end position P3 when moved to the rearmost end.
[0054]
As shown in FIG. 10B, the hook 215 is urged by a compression spring 217 in the direction toward the slider 180. Therefore, even if the hook 215 is not engaged with the engagement groove 181 when the drive unit 200 is attached to the first case 171, the hook 215 is moved into the engagement groove 181 during one reciprocation of the hook 215. Always engage. Therefore, when the drive unit 200 is attached to the main unit 100, it is not necessary to align the hooks 215 and the engagement grooves 181, and the work of attaching the drive unit 200 to the main unit 100 is not complicated.
[0055]
Referring to FIGS. 11 and 12, a signal connector 221 as a second input / output unit that is electrically connected to an external signal line 220 capable of transmitting an electrical signal is externally provided on the casing 202 of the drive unit 200. It is arranged to face. Specifically, the signal connector 221 is provided on a side surface of the outer peripheral surface of the upper casing 203 that is inserted into the recess 173 of the first case 171, and one end of the external signal line 220 is connected thereto. The signal connector 221 on the drive unit 200 side and the signal connector 165 on the main unit 100 side are arranged to face each other. The external signal line 220 is integrated with a cable 201 that supplies power to the drive unit 200 and a control signal line (not shown) that can transmit a control signal. The external signal line 220 and the control signal line are connected to a control device (not shown), and the operation of the drive unit 200 is controlled by this control device. When the drive unit 200 is inserted into a predetermined position in the first case 171, the signal connector 221 is automatically electrically connected to the signal connector 165. As a result, detection signals from the temperature sensors 161 and 162 of the insertion unit 101 are transmitted to the drive unit 200 and are input to the control device via the external signal line 220 from here. Therefore, the temperature sensors 161 and 162 can be electrically connected to the control device by relaying the drive unit 200 only by housing the drive unit 200 in the main unit 100, and connected to the temperature sensors 161 and 162. Further, it is not necessary to separately perform the work of connecting the electrical signal line 164 to the control device, and the work can be simplified.
[0056]
In addition, when the drive unit 200 is not properly inserted, the signal connectors 165 and 221 are not connected to each other, and thus the signals from both the temperature sensors 161 and 162 indicate the value of the disconnection state. Based on this, it is possible to detect the insertion failure of the drive unit 200, and there is no need to separately provide a dedicated sensor for detecting the insertion failure.
[0057]
The casing 202 of the drive unit 200 is further provided with a sensor 230 that confirms the reciprocating motion of the slider 180. The sensor 230 is composed of, for example, a photo interrupter including a light emitting element and a light receiving element. The sensor 230 is shielded by the shutter 182 every time the slider 180 reciprocates, and detects the reciprocating motion of the slider 180.
[0058]
Based on the detection signal of the sensor 230, it can be detected that the driving force of the driving unit 200 is not normally transmitted to the slider 180. That is, when the hook 215 and the slider 180 are not normally engaged, the slider 180 does not reciprocate. Therefore, even if the motor 211 rotates, the sensor output is turned on (light reception) from off (light reception) or off. Does not switch from to on. Based on this, it is possible to detect a poor engagement between the hook 215 and the slider 180, and to prevent a situation in which the laser emitting unit 120 does not move.
[0059]
With reference to FIG. 8, the lock mechanism 190 of the cover part 102 is demonstrated.
[0060]
A convex portion 191 (corresponding to an engagement member) is provided on the rear end surface of the casing 202 of the drive unit 200, and a lock hole 192 (corresponding to a lock member) is provided on the rear wall 178 of the second case 172. Yes. When the second case 172 is closed after the drive unit 200 is inserted into the first case 171, the drive unit 200 is pushed by the second case 172 and further inserted to a predetermined position. When the cases 171 and 172 are completely closed, the convex portion 191 is fitted into the lock hole 192. Thereby, the cover part 102 is maintained in a closed state, and the problem that the cover part 102 opens carelessly and the drive unit 200 falls is prevented.
[0061]
On the other hand, when the drive unit 200 is taken out from the cover portion 102, a force equal to or greater than the engaging force between the convex portion 191 and the lock hole 192 may be applied in the direction in which the cases 171 and 172 are opened. If a lock unit for fixing the cases 171 and 172 to each other is provided, an operation of releasing the lock state of the lock unit is required in addition to the operation of opening the cover unit 102. Therefore, the cover 102 can be easily opened and the drive unit 200 can be taken out easily and quickly compared to the case where a dedicated locking means for fixing the cases 171 and 172 to each other is provided. Furthermore, since the locking means for fixing the cases 171 and 172 to each other is unnecessary, the structure of the cover portion 102 is not complicated and the manufacturing cost does not increase.
[0062]
Since a part of the members necessary for holding the cover portion 102 in the closed state is provided on the drive unit 200 side, the cover portion 102 is closed until the drive unit 200 is accommodated in the cover portion 102. It cannot be kept in a state. Therefore, if the cover 102 is open without any action, it means that the drive unit 200 is not accommodated, and forgetting to insert the drive unit 200 can be prevented.
[0063]
The shape of the convex portion 191 is, for example, a hemispherical shape having a height of about 2 mm, and the lock hole 192 has a hole shape in which the convex portion 191 is fitted. In addition, the shape of the convex part 191 and the lock hole 192 is not specifically limited, As long as the function which can hold | maintain the cover part 102 in the closed state can be exhibited, a suitable shape is employable. For example, instead of the lock hole 192, a recess or a groove may be used. Further, by adjusting the dimensions of the convex portion 191 and the lock hole 192, the engaging force for holding the cover portion 102 in the closed state can be adjusted to a desired strength. Further, the same function is exhibited even with a lock mechanism in which the casing 202 side of the drive unit 200 has a concave shape and the cover portion 102 side has a convex shape.
[0064]
After the procedure is finished, the drive unit 200 is taken out from the cover unit 102. The operation of taking out the drive unit 200 can be easily performed by holding and pulling the handle 207 provided on the lower case 206 by hand.
[0065]
The main unit 100 configured as described above is sterilized in advance and maintained in a state of being cut off from the outside world until use.
[0066]
According to the laser irradiation apparatus 10 of the present embodiment, since the main unit 100 and the drive unit 200 are configured to be detachable, the main unit 100 including a portion to be inserted into the living body is discarded for each treatment. On the other hand, the drive unit 200 can be used repeatedly, resulting in an economical medical device.
[0067]
As described above, the main unit 100 is disposable and the drive unit 200 is reusable. However, aseptic operation can be performed only by a simple operation of storing the drive unit 200 in the cover portion 102 of the sterilized main unit 100. This can be performed and the complicated preparation work of covering with a sterilized flexible bag is not necessary. Further, the operability is not lowered as when covered with a flexible bag. Since the cover part 102 is comprised from the hard case, the operativity at the time of an operator operating the laser irradiation apparatus 10 also improves.
[0068]
In the above-described embodiment, the laser irradiation apparatus 10 is illustrated as a medical device, the insertion unit 101 is illustrated as a treatment member, and the laser emission unit 120 is illustrated as an operation member. However, the present invention is not limited thereto. For example, the present invention can be applied to other medical devices such as an intravascular ultrasonic catheter. Further, the thin plate slider is exemplified as the transmission member, and the hook 215 is illustrated as the output member. However, the transmission member and the output member may adopt appropriate forms as long as they can be detachably mechanically connected. For example, a rack and pinion method may be adopted as a connection form between the transmission member and the output member. Further, the electrical operation unit may be various devices other than the temperature sensor, an electric device such as a lamp, a motor, a solenoid, and an electromagnetic valve that are operated by transmitting an electrical signal.
[0069]
【The invention's effect】
The present invention configured as described above has the following effects.
[0070]
According to the first aspect of the present invention, since the main unit and the drive unit are configured to be detachable, the main unit including the treatment member can be discarded for each treatment or diagnosis, while the drive unit is repeated. It can be used and becomes an economical medical device.
[0071]
According to the second or sixth aspect of the present invention, the drive unit is relayed by simply storing the drive unit in the main unit, and the electrical operation unit such as the temperature sensor and the external device are electrically connected. It is possible to connect, and it is not necessary to separately perform an operation of connecting the electric signal line connected to the electric operating unit to an external device, and the operation can be simplified.
[0072]
According to the third aspect of the present invention, aseptic operation can be performed only by a simple operation of storing the drive unit in the cover portion of the sterilized main body unit, and the sterilized flexible bag is covered. No complicated preparation work is required. Further, the operability is not lowered as when covered with a flexible bag.
[0073]
According to the fourth aspect of the present invention, since the cover portion is constituted by the hard case, the operability when the operator operates the medical device is improved.
[0074]
According to the fifth aspect of the present invention, the cover portion is kept closed by the engagement of the lock portion of the main unit and the engaging member of the drive unit, and the cover portion is opened carelessly. The problem that the drive unit falls is prevented. Also, when removing the drive unit from the cover part, it is only necessary to open the cover part, and the cover part can be opened more easily than when a dedicated locking means for fixing the cover part is provided. The unit can be removed easily and quickly. Furthermore, the structure of the cover portion is not complicated and the manufacturing cost does not increase. In addition, since a part of the members necessary for holding the cover portion in the closed state is provided on the drive unit side, the cover portion is held in the closed state until the drive unit is housed in the cover portion. This makes it possible to prevent forgetting to insert the drive unit.
[0075]
According to the invention of claim 7 or claim 8, while the main body unit including the treatment member can be discarded for each treatment or diagnosis, the drive unit can be used repeatedly, and an economical medical device can be used. A main body unit or drive unit suitable for realization can be provided.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a laser irradiation apparatus.
FIG. 2 is a cross-sectional view of a tip portion of a laser irradiation apparatus.
FIG. 3 is a schematic view seen from below in FIG. 2;
4 is a cross-sectional view taken along line 4-4 of FIG.
5 is a cross-sectional view taken along line 5-5 in FIG.
FIG. 6 is a diagram schematically illustrating a path of laser light when a laser emitting unit is positioned at a distal end position, an intermediate position, and a proximal end position during a reciprocating motion.
FIG. 7 is a perspective view showing a state in which the cover unit of the main unit of the laser irradiation apparatus is opened and a drive unit is attached in the cover unit.
FIGS. 8A and 8B are a perspective view and a rear view, respectively, for explaining the configuration of the rear portion of the main unit and the drive unit.
FIG. 9 is a perspective view showing the main unit before the drive unit is attached.
FIG. 10 (A) is a front view showing a state in which the cover portion of the main unit is opened, and FIG. 10 (B) is a diagram showing a slider disposed in the cover portion and mechanically connected to the laser emitting portion. It is a perspective view shown with the hook of a drive unit.
FIG. 11 is a perspective view showing a drive unit to which a slide lever for fixing an endoscope is connected.
12A and 12B are a perspective view and a front view showing a drive unit, respectively.
FIG. 13 is a diagram showing a drive mechanism of a drive unit and a slide lever to which an endoscope is fixed.
[Explanation of symbols]
10 ... Laser irradiation device (medical equipment)
100 ... Main unit
101 ... Insertion part (treatment member)
102 ... Cover part
120... Laser emitting part (operation member)
161, 162... First and second temperature sensors (electrical actuators)
164 ... Electric signal line
165... Signal connector (first input / output unit)
171, 172... First and second cases
180 ... slider (transmission member)
190 ... Lock mechanism of cover
191 ... convex portion (engagement member)
192: Lock hole (lock member)
200 ... Drive unit
202 ... casing
210 ... Drive mechanism
215 ... hook (output member)
220 ... External signal line
221: Signal connector (second input / output unit)

Claims (8)

A treatment member for mechanical operation capable actuating member is housed, the therapeutic member and the movable cover opening and closing together with the integrally attached to and communicated with the internal, is housed in the cover portion Rutotomoni the cover portion And a transmission member mechanically connected to the actuating member.
A drive unit that includes a drive mechanism that outputs a mechanical drive force; a casing that includes the drive mechanism; and an output member that is connected to the drive mechanism and outputs the drive force to the outside of the casing. Have
The drive unit is detachably accommodated in the cover portion of the main unit, and the output member is mechanically connected to the transmission member of the main unit detachably ,
The actuating member is mechanically operated by transmitting the driving force output from the driving mechanism to the actuating member via the transmission member mechanically connected to the output member. Medical equipment. The main body unit is further disposed on the treatment member and capable of transmitting an electrical signal;
A first input / output part disposed in the cover part and electrically connected to the electrical actuating part,
The drive unit further includes a second input / output unit that is electrically connected to an external signal line capable of transmitting an electrical signal and provided on the casing so as to face the outside.
The said drive unit is accommodated in the said cover part of the said main body unit, The said 2nd input / output part is electrically connected to the said 1st input / output part of the said main body unit so that attachment or detachment is possible. The medical device according to 1.   The medical device according to claim 1, wherein the main unit is sterilized.   The medical device according to claim 1, wherein the cover portion includes a hard case.   The said cover part of the said main body unit has a locking member which engages with the engaging member provided in the said casing of the said drive unit, and hold | maintains the closed state. Medical equipment.   The medical device according to claim 2, wherein the electrical operation unit is a temperature sensor. In a medical device main unit to which a drive unit including a drive mechanism that outputs a mechanical drive force is detachably attached,
A treatment member containing an actuating member capable of mechanical movement; and
The treatment member is integrally attached with the inside communicating, and a cover portion that can be opened and closed,
Integrally assembled to Rutotomoni the cover portion is housed in the cover portion, anda transmitting member which is mechanically connected to the actuating member,
The drive unit is detachably housed in the cover portion, and the driving force of the drive mechanism is transmitted to the operating member via the transmission member , whereby the operating member is mechanically operated. The main unit of medical equipment. A treatment member for mechanical operation capable actuating member is housed, the therapeutic member and the movable cover opening and closing together with the integrally attached to and communicated with the internal, is housed in the cover portion Rutotomoni the cover portion A drive unit of a medical device that is detachably attached to a main body unit including a transmission member that is integrally assembled with the transmission member and mechanically connected to the operating member;
A drive mechanism that outputs a mechanical drive force;
A casing containing the drive mechanism;
An output member connected to the drive mechanism and outputting the driving force to the outside of the casing and mechanically detachably connected to the transmission member of the main body unit ;
The drive force of the drive mechanism is detachably housed in the cover part of the main unit and is transmitted to the operating member of the main unit via the transmission member mechanically connected to the output member. Thus, the drive unit of the medical device is characterized in that the operating member is mechanically operated .

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