JP6516339B1 - Medical device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical device capable of smoothly performing a medical procedure. SOLUTION: A medical instrument comprises a first blade (1), a second blade (2), a connection mechanism (5), and a discharge pipe (6). The first blade (1) and the second blade (2) have an arc shape in which the cross section along the width direction intersecting the extension direction from the proximal end to the distal end is convex on the outer surface side. The coupling mechanism (5) pivotally couples the proximal ends of the first blade (1) and the second blade (2). The discharge pipe (6) includes a suction port (60) disposed in a space between the inner surfaces of the first blade (1) and the second blade (2) and a discharge port (61) disposed outside the space. Have. [Selected figure] Figure 1

Description

  The present invention relates to a medical device inserted into a human or animal hole.

  2. Description of the Related Art Conventionally, as a medical instrument to be inserted into a hole of a person, one having a pair of rotatably connected blades is known. For example, when performing an examination, surgery or other medical treatment on the vagina or uterus, a speculum, which is an example of the above-mentioned medical device, is used.

  In medical procedures performed with a speculum inserted, for example, surgery for cervical cancer, an electric scalpel and a laser scalpel are used. When a patient's tissue is excised using this type of scalpel, the heat produces smoke and makes the affected area less visible. In addition, the operation may not be able to proceed efficiently due to fluid or tissue such as blood coming out of the resected affected area.

  Such problems may also occur when performing medical procedures on sites other than the vagina, such as the anus. In addition to medical treatment for humans, medical treatment for animals other than humans may occur as well.

Japanese Patent Publication No. 2001-509706

  One of the objects of the present invention is to provide a medical device capable of facilitating medical treatment for the pores of a human or animal.

A medical instrument according to the present invention comprises a first blade, a second blade, a handle, a connection mechanism, and a discharge pipe. The first blade has a first inner surface, a first outer surface, a first proximal end, and a first distal end, and has a width intersecting the extending direction from the first proximal end toward the first distal end. A cross section along the direction is arc-shaped to be convex on the first outer surface side. The second blade has a second inner surface opposite to the first inner surface, a second outer surface, a second base end and a second tip, and is directed from the second base to the second tip. A cross section along a width direction intersecting the extending direction is arc-shaped to be convex toward the second outer surface. The handle extends in a direction away from the first blade and the second blade at the second base end of the second blade. The connection mechanism rotatably connects the first base end and the second base end. The discharge pipe has a suction port disposed in a space between the first inner surface and the second inner surface, and a discharge port disposed outside the space. The first proximal end and the second proximal end form an opening through which the inside of the hole can be seen from the outside. The discharge pipe is provided to the first blade and extends in a direction away from the center of the opening on the first base end side.

  According to the present invention having the above configuration, it is possible to discharge the smoke generated when the affected area is cut off by, for example, an electric knife or a laser knife from the space between the first blade and the second blade through the discharge pipe. Therefore, it is possible to smoothly carry out the medical treatment for the human or animal hole.

FIG. 1 is a schematic perspective view of a vaginal speculum according to a first embodiment. Sectional drawing of the said vagina mirror along the extension direction of each braid | blade. Sectional drawing in alignment with the width direction of the upper blade with which the above-mentioned vagina mirror is provided. The top view which the upper blade and the discharge tube with which the above-mentioned colposcope is provided is shown. The schematic perspective view of the vaginal speculum which concerns on 2nd Embodiment. FIG. 6 is a cross-sectional view of the vaginal speculum along the extension direction of each blade provided in the vaginal speculum. The top view of the lower braid | blade and the discharge tube with which the above-mentioned vagina mirror is provided. The schematic perspective view of the vaginal speculum which concerns on 3rd Embodiment. The figure which looked at the said laparoscope from the proximal end side of each braid | blade. The top view which the upper blade and the discharge tube with which the above-mentioned colposcope is provided is shown. The top view of the upper blade and discharge pipe which concern on a modification.

  Hereinafter, some embodiments of the present invention will be described with reference to the drawings. In each embodiment, as an example of the medical device, a vaginal speculum which is inserted into a human vagina is disclosed.

First Embodiment
FIG. 1 is a schematic perspective view of a speculum 100 according to the first embodiment. The vaginal speculum 100 includes an upper blade 1, a lower blade 2, a first handle 3, a second handle 4, a connecting member 5, and a discharge pipe 6. Each of these elements is formed of metal such as stainless steel. However, at least a part of these elements may be formed of a material other than metal such as a resin material. In the present embodiment, the upper blade 1 is an example of the first blade, and the lower blade 2 is an example of the second blade.

  The upper blade 1 has an inner surface 10, an outer surface 11 opposite to the inner surface 10, a proximal end 12 and a distal end 13 opposite to the proximal end 12. The upper blade 1 is in the form of a long spatula extending in the direction of extension from the proximal end 12 to the distal end 13. That is, the cross section of the upper blade 1 along the width direction orthogonal to the extending direction has an arc shape which is convex on the outer surface 11 side.

  The lower blade 2 has an inner surface 20, an outer surface 21 opposite to the inner surface 20, a proximal end 22, and a distal end 23 opposite to the proximal end 22. Similar to the upper blade 1, the lower blade 2 is in the form of a long spatula extending in the extension direction from the proximal end 22 to the distal end 23. That is, the cross section of the lower blade 2 along the width direction orthogonal to the extending direction has an arc shape which is convex on the outer surface 21 side.

  The first handle 3 extends downward from the proximal end 12 of the upper blade 1 in the figure. The first handle 3 has a through hole 30. The first handle 3 is integral with the upper blade 1 in the illustrated example, but may be a component different from the upper blade 1.

  The second handle 4 has a handle 40 extending downward from the base end 22 of the lower blade 2, a pair of guides 41 provided on both sides of the handle 40, and a tip of the handle 40. A protrusion 42 protrudes in a direction orthogonal to the extending direction of the handle 40, and a through hole 43 provided in the protrusion 42. The second handle 4 is integral with the lower blade 2 in the illustrated example, but may be a component different from the lower blade 2.

  The connecting member 5 protrudes in the direction orthogonal to the extending direction of the slide shaft 51 at the tip of the slide shaft 51 at the tip of the slide shaft 51 and the slide shaft 51 extending downward in the figure from the holding portion 50 having a semicircular arc shape. And an internal thread 53 provided on the projection 52. The base end 12 of the upper blade 1 has both sides in the width direction of the upper blade 1 projecting downward in the figure, and these projecting portions are rotatably connected to the holding portion 50 by pins 54 respectively There is. The slide shaft 51 is passed between a pair of guides 41 and is slidably held by the guides 41.

  Vasoscope 100 further comprises bolts 7 and 8. The bolt 7 has a head 70 and an external thread 71 fixed to the head 70. The head 70 is in contact with the lower surface of the protrusion 42. The male screw 71 is inserted into the through hole 43 and screwed into the female screw 53. The bolt 7 is attached to the projection 42 so as to restrict the axial movement of the male screw 71 and to be rotatable. When the bolt 7 is rotated in a predetermined direction, the female screw 53 is fed toward the tip of the male screw 71, whereby the connecting member 5 and the upper blade 1 move upward relative to the lower blade 2 in the figure. On the other hand, when the bolt 7 is rotated in the opposite direction, the connection member 5 and the upper blade 1 move downward relative to the lower blade 2 in the figure.

  The bolt 8 has a knob 80 having an internal thread, and an external thread 81 passed through the internal thread of the knob 80. The male screw 81 is passed through the through hole 30 and is rotatably connected to the holding portion 50 by a pin 55. When the knob 80 is rotated in a predetermined direction, the knob 80 moves in the direction of the pin 55. Turning the knob 80 in the opposite direction causes the knob 80 to move away from the pin 55. That is, the movable range of the first handle 3 can be adjusted by the knob 80. More specifically, since the upper blade 1 is connected to the first handle 3, the knob 80 can adjust the rotation range of the upper blade 1 with respect to the lower blade 2 and the connecting member 5.

  Thus, the upper blade 1 can be moved up and down with respect to the lower blade 2 by the connection mechanism including the first handle 3, the second handle 4, the connection member 5, the pins 54 and 55, and the bolts 7 and 8. It is linked in a movable manner. However, the mechanism for rotatably and rotatably connecting the upper blade 1 and the lower blade 2 is not limited to the illustrated example.

  The discharge pipe 6 has a suction port 60 disposed in the space between the inner surfaces 10 and 20 of the blades 1 and 2 and a discharge port 61 disposed outside the space. The discharge pipe 6 passes through an opening OP formed by the base end 12 of the upper blade 1 and the connecting member 5 (or the base end 22 of the lower blade 2).

  In the illustrated example, the discharge pipe 6 bends between the first portion 62 having the suction port 60 at its tip, the second portion 63 having the discharge port 61 at its tip, and the first portion 62 and the second portion 63. And a portion 64. The first portion 62 is fixed to the inner surface 10 by welding, for example. Thus, the discharge pipe 6 is fixed to the upper blade 1. However, the method of attaching the discharge pipe 6 to the upper blade 1 is not limited to this example.

  The upper blade 1 has a notch 14 at the center of the proximal end 12. The second portion 63 or the bent portion 64 of the discharge pipe 6 passes near the notch 14. A portion of the second portion 63 or the bending portion 64 may be located between the notches 14.

  In the vicinity of the discharge port 61, a connection portion 65 is provided. For example, a resin tube 9 is connected to the connection portion 65. In the illustrated example, the connection portion 65 has a shape in which three truncated cones whose outer diameters decrease toward the tip end are sequentially arranged, but the present invention is not limited to this example. Such a connecting portion 65 makes it possible to connect the tubes 9 of different inner diameters to the connecting portion 65.

  At the other end of the tube 9 not shown, a suction device is connected. The configuration of the aspirator is not particularly limited, but as an example, a suction pressure of at most -95 Kpa and a suction flow rate of at most 90 L / min can be used.

  For example, in an operation performed by inserting the speculum 100 into the vagina, when the affected area is removed by an electric knife or a laser knife, smoke is generated and interferes with the operation. When the aspirator is operated during such a surgery, ambient smoke is aspirated from the suction port 60, and the visibility is kept good. As an example, when using the aspirator of the above performance, if the inner diameter of the discharge pipe 6 is set in the range of 4 mm or more and 7 mm or less, the exhaust pipe 6 exhibits sufficient exhausting ability, and the discharge pipe 6 is for medical treatment such as surgery. Hard to get in the way.

  In the example of FIG. 1, the discharge pipe 6 has a plurality of holes 66 in addition to the suction port 60 and the discharge port 61. For example, the discharge pipe 6 can be provided on the first portion 62 and the lower portion of the bending portion 64 (area facing the lower blade 2). These holes 66 play an auxiliary role in sucking smoke, liquid and the like in the region between the suction port 60 and the proximal end 12. The hole 66 has a smaller opening area than the suction port 60. As an example, the diameter of the hole 66 is in the range of 0.5 mm or more and 3 mm or less.

  An insulating film may be coated on at least a part of the upper blade 1, the lower blade 2, the first handle 3, the second handle 4, the connection member 5 and the discharge pipe 6. Thereby, the discharge at the time of use of an electric knife, etc. can be prevented. The insulating film is preferably formed in the vicinity of the suction port 60 to the inside of the discharge pipe 6, for example, to a position at least twice as large as the inner diameter of the discharge pipe 6 from the suction port 60.

  FIG. 2 is a cross-sectional view of the speculum 100 along the extension direction of the blades 1 and 2. Here, the blades 1 and 2 are in parallel with each other. In the illustrated example, the first portion 62 extends linearly along the inner surface 10. The second portion 63 is inclined with respect to the first portion 62 and linearly extends in a direction away from the center of the opening OP. The bent portion 64 is smoothly bent. An angle θ1 formed by the axis of the first portion 62 and the axis of the second portion 63 is an obtuse angle.

  Thus, when the second portion 63 is inclined at an obtuse angle θ1 with respect to the first portion 62, the second portion 63 is less likely to hit the patient in a state in which the vaginal mirror 100 is inserted in the vagina, and It does not disturb. In addition, the inner diameter of the discharge pipe 6 in the bent portion 64 can be kept large as compared with the case where the angle θ1 is a right angle or an acute angle, and the inside of the bent portion 64 is smoothly curved. Become. Furthermore, when the flexible rod-like cleaning tool is inserted into the discharge tube 6 of the vaginal speculum 100 used for the medical treatment and the inside is cleaned, for example, the cleaning tool is smoothly drawn from the discharge port 61 to the suction port 60 (or Reverse) can be inserted.

  On the other hand, if the angle θ1 is too large, the second part 63 blocks the view of the doctor who looks inside the vagina through the opening OP. From such a viewpoint, the angle θ1 is preferably, for example, 90 ° or more and 150 ° or less, and more preferably 110 ° or more and 130 ° or less. In the example of FIGS. 1 and 2, the second portion 63 or the bent portion 64 passes near the notch 14. Thereby, the second portion 63 can be bent, for example, beyond the inner surface 10 and the outer surface 11 of the upper blade 1 around the notch 14.

  The inner and outer diameters of the first portion 62 are constant except in the vicinity of the suction port 60. The first portion 62 in the vicinity of the suction port 60 has a shape that is obliquely cut to be tapered toward the tip. As an example, the peripheral edge of the suction port 60 is inclined at an angle θ2 which is an acute angle with respect to the axis (or the inner surface 10) of the first portion 62. Thereby, the opening area (area along the plane inclined at the angle θ2) of the suction port 60 is larger than the cross-sectional area of the inside of the first portion 62 along the plane perpendicular to the axis of the first portion 62. For example, when the inner diameter of the discharge pipe 6 is entirely constant, the opening area of the suction port 60 is larger than the sectional area inside the other part of the discharge pipe 6 and the opening area of the discharge port 61. If the opening area of the suction port 60 is large, ambient smoke can be efficiently sucked. Further, in the illustrated example, the opening area can be increased without particularly increasing the pipe diameter in the vicinity of the suction port 60. Therefore, the discharge pipe 6 is less likely to interfere with the medical treatment. As one example, the angle θ2 is preferably 60 ° or less, and more preferably 45 ° or less. Under these conditions, a very good flue gas performance can be realized.

  FIG. 3 is a cross-sectional view of the upper blade 1 taken along the line III-III in FIG. F in the figure indicates a virtual plane connecting the both ends in the width direction of the upper blade 1. In the illustrated example, the entire first portion 62 of the discharge pipe 6 is closer to the inner surface 10 than the virtual plane F.

  When the first portion 62 and the bent portion 64 satisfy the overall illustrated relationship, the drain 6 is less likely to interfere with medical treatment. However, the first portion 62 or the bent portion 64 may slightly protrude from the imaginary plane F in the radial direction. Even when the first portion 62 or the bent portion 64 protrudes from the imaginary plane F, the medical procedure is taken if the protruding height is generally equal to or less than half (50%) of the outer diameter D of each portion 62, 64. If it is 20% or less, it is possible to obtain the very good effect similar to that of the illustrated example.

  FIG. 4 is a plan view of the upper blade 1 and the discharge pipe 6 as viewed from the inner surface 10 side. CL 1 in the drawing indicates a center line in the width direction of the upper blade 1. The center line CL1 is parallel to the extension direction of the upper blade 1. The axis of the discharge pipe 6 coincides with the center line CL1 in plan view.

  The length from the proximal end 12 (for example, the position of the pin 54) to the distal end 13 is L1. The distance from the center of the suction port 60 in plan view to the tip 13 is D1. The distance D1 is preferably about half of the length L1, for example, 40% or more and 60% or less of the length L1. Thereby, the smoke generated in the space between the upper blade 1 and the lower blade 2 can be sucked well.

  According to the speculum 100 according to the first embodiment described above, the smoke that may be generated in the case of a medical procedure such as surgery can be discharged from the space between the upper blade 1 and the lower blade 2 by the discharge pipe 6. Can be done smoothly.

  As a comparative example, a speculum without the discharge pipe 6 is used, and a doctor or his / her assistant manually holds the resin tube connected to the aspirator into the space between the upper blade 1 and the lower blade 2 Then we assume that we smoke during operation. In this case, it takes time to hold the tube, and the hand of the person holding the tube is in the way. Furthermore, the position of the tube is not fixed, and it is difficult to progress the surgery. On the other hand, in the case of the vaginal speculum 100 according to the present embodiment, since it is sufficient to connect the aspirator to the discharge pipe 6 provided fixedly, there is no need to have a tube, and furthermore, the visibility is good.

  Moreover, in the said comparative example, the tube made of resin may be damaged by an electric knife or a laser knife. It is extremely dangerous if the tube melted by such damage contacts the patient. On the other hand, since the discharge pipe 6 of the vaginal speculum 100 according to the present embodiment is made of metal, it is safe without being damaged by the electric knife and the laser knife. The discharge pipe 6 can also be formed of a material other than metal, such as heat resistant resin or ceramic. Even in this case, damage to the discharge pipe 6 due to the electric knife or the laser knife can be suppressed.

Further, in the present embodiment, the suction port 60 of the discharge pipe 6 is provided on the inner surface 10 of the upper blade 1. When the upper blade 1 is used so as to be positioned vertically above the lower blade 2, liquid or tissue such as blood that comes out of the affected area excised during the operation is unlikely to adhere to the vicinity of the suction port 60. Therefore, good suction performance can be maintained without clogging of the discharge pipe 6 with these liquids and tissues.
Besides, various favorable effects can be obtained from the present embodiment.

Second Embodiment
FIG. 5 is a schematic perspective view of a vaginal speculum 200 according to the second embodiment. The speculum 200 differs from the speculum 100 described above in that the drainage tube 6 is attached to the lower blade 2. That is, in the present embodiment, the lower blade 2 is an example of the first blade, and the upper blade 1 is an example of the second blade. The same elements as those of the speculum 100 are denoted by the same reference numerals, and the description thereof will be omitted.

  In the speculum 200, the first portion 62 of the discharge tube 6 is disposed on the inner surface 20 of the lower blade 2. The second portion 63 of the discharge pipe 6 extends along the handle 40. For example, the first portion 62 is welded to the inner surface 20 and the second portion 63 is welded to the handle 40. However, the method of attaching the discharge pipe 6 is not limited to this example. Since the second portion 63 extends along the handle 40, the members do not disperse around the opening OP, and a large work space for the doctor can be secured.

  In the example of FIG. 5, the first portion 62 has a plurality of holes 66 in addition to the suction port 60. As an example, the diameter of the hole 66 is in the range of 0.5 mm or more and 3 mm or less.

  FIG. 6 is a cross-sectional view of the vaginal mirror 200 along the extension direction of the blades 1 and 2. The lower blade 2 has a through hole 24 penetrating from the inner surface 20 to the outer surface 21 at the proximal end 22. The bent portion 64 of the discharge pipe 6 passes through the through hole 24.

  In the example of FIG. 6, an angle θ1 formed by the axis of the first portion 62 and the axis of the second portion 63 is a right angle or an obtuse angle close to a right angle (for example, 90 ° or more and 100 ° or less). However, the angle θ1 may be determined in the same range as the first embodiment.

  In the present embodiment, most of the first portion 62 and the bent portion 64 are on the inner surface 20 side of an imaginary plane connecting the both ends in the width direction of the lower blade 2. The protrusion height from the virtual plane is preferably 50% or less of the outer diameter D as a whole, and more preferably 20% or less. However, the entire portions 62 and 64 may not protrude from the virtual plane. In the example of FIG. 6, the lower portion of the first portion 62 entirely contacts the inner surface 20.

  In the present embodiment, the peripheral edge of the suction port 60 is not inclined. That is, the opening area of the suction port 60 is the same as the cross-sectional area of the inside of the first portion 62 along the plane perpendicular to the axis of the first portion 62. However, as in the first embodiment, the peripheral edge of the suction port 60 may be inclined at an acute angle θ 2.

  FIG. 7 is a plan view of the lower blade 2 and the discharge pipe 6 as viewed from the inner surface 20 side. CL 2 in the drawing indicates a center line in the width direction of the lower blade 2. The center line CL2 is parallel to the extending direction of the lower blade 2. The axis of the discharge pipe 6 coincides with the center line CL2 in plan view.

  The length from the proximal end 22 to the distal end 23 is L2. The distance from the suction port 60 to the tip 23 is D2. The distance D2 is preferably closer to the distal end portion 23, and is preferably, for example, 2% or more and 40% or less of the length L2. For example, in the cross-sectional view of FIG. 6, the suction port 60 is disposed at a position where the inner surface 20 starts to bend upward near the tip 23.

  When the upper blade 1 is used so as to be positioned vertically above the lower blade 2, liquid or tissue such as blood which comes out of the affected area excised during the operation may be accumulated on the inner surface 20 of the lower blade 2. In addition to the smoke, the discharge pipe 6 also plays a role of suctioning such a liquid or the like. If the distance D2 is within the above range, the liquid etc. which falls on the inner surface 20 in the vicinity of the tip 23 can be sucked well. In addition, when the suction port 60 is not inclined, the entire suction port 60 is easily filled with the liquid accumulated in the vicinity of the distal end portion 23, so that the liquid can be sucked satisfactorily.

The aforementioned holes 66 can be provided, for example, on the side of the first portion 62. In the illustrated example, the holes 66 are alternately arranged along the center line CL2 on one side and the other side of the first portion 62 in the width direction of the lower blade 2. Thereby, the liquid etc. which accumulate on the both sides of the 1st portion 62 can be sucked satisfactorily. Holes 66 may also be disposed in the bent portion 64.
Even with the configuration of the present embodiment, the same effects as those of the first embodiment can be obtained.

Third Embodiment
FIG. 8 is a schematic perspective view of a speculum 300 according to the third embodiment. Although the discharge tube 6 is attached to the upper blade 1 similarly to the above-described vaginal speculum 100, the vaginal speculum 300 differs from the vaginal speculum 100 in the extension direction of the discharge tube 6 from the opening OP. The same elements as those of the speculum 100 are denoted by the same reference numerals, and the description thereof will be omitted.

  In the speculum 300, the first portion 62 of the discharge tube 6 is disposed on the inner surface 10 of the upper blade 1. The bent portion 64 of the discharge pipe 6 passes through the opening OP. The second portion 63 of the discharge tube 6 extends laterally from the proximal end 12 at an angle different from that of the example of FIG. The direction in which the second portion 63 extends is the direction opposite to the position where the first handle 3 is provided.

  FIG. 9 is a view of the speculum 300 as seen from the proximal end 12 side. In the figure, X represents the width direction of the upper blade 1 and Y represents the vertical direction in which the upper blade 1 and the lower blade 2 are aligned. For example, the width direction X and the vertical direction Y are orthogonal to each other. In the vaginal speculum 100 shown in FIG. 1, the axis of the second portion 63 is parallel to the longitudinal direction Y when viewed from the proximal end portions 12 and 22 as in FIG. 9. On the other hand, in the vaginal mirror 300, the axis of the second portion 63 is inclined with respect to the longitudinal direction Y. Furthermore, the axis of the second portion 63 is also inclined with respect to the width direction X. In the illustrated example, the angle at which the axis of the second portion 63 is inclined with respect to the width direction X (sharp angle) is larger than the angle at which the axis is inclined with respect to the longitudinal direction Y (sharp angle).

  FIG. 10 is a plan view of the upper blade 1 and the discharge pipe 6 as viewed from the inner surface 10 side. As in the example of FIG. 4, the axis of the first portion 62 coincides with the center line CL1. The second portion 63 and the bending portion 64 deviate from the center line CL1. Therefore, in the example of FIG. 10, the discharge pipe 6 does not overlap with the notch 14.

  For example, as shown in FIG. 11, the first portion 62 may be shifted to the second portion 63 side with respect to the center line CL1. In this way, the curvature of the bent portion 64 can be reduced, and the inner diameter of the discharge pipe 6 at the bent portion 64 can be kept large. Furthermore, when the inside of the discharge pipe 6 is cleaned using the above-described flexible cleaning tool, the cleaning tool can be smoothly inserted from the discharge port 61 to the suction port 60.

  The structures disclosed in the above first to third embodiments can be combined as appropriate. For example, in the case where the discharge pipe 6 is provided in the upper blade 1, the discharge pipe 6 may pass through a through hole provided in the upper blade 1 as in the example of FIG. 6.

  Further, in the case where the lower blade 2 is provided with the discharge pipe 6, as in the example of FIG. 9, the axis of the second portion 63 in the width direction and the longitudinal direction of the lower blade 2 is viewed from the base end 22 side. You may tilt it. In this case, the direction in which the second portion 63 extends may be opposite to the position where the first handle 3 is provided.

In each embodiment, although the case where discharge pipe 6 has one bent part 64 was illustrated, discharge pipe 6 may have two or more bend parts. Such additional bends can be arranged outside the space between the upper blade 1 and the lower blade 2. Thereby, the shape of the discharge pipe 6 in which the connection of the tube 9 is easy can be realized.
In each embodiment, although the case where exhaust pipe 6 was provided in one of upper blade 1 and lower blade 2 was illustrated, exhaust pipe 6 may be provided in both of these blades.

  In each embodiment, the connection mechanism in which the upper blade can be moved up and down with respect to the lower blade is illustrated. However, the configuration relating to the drainage tube 6 is also applicable to other types of speculum. For example, the discharge pipe 6 may be provided in a vaginal speculum in which the upper blade and the lower blade are directly connected by a pin or the like, and the upper blade is rotatable with respect to the lower blade but is not movable up and down.

  In each of the embodiments, as an example of the medical device, a vaginal speculum which is inserted into a person's vagina is disclosed. However, the configuration relating to the discharge pipe 6 or the like can also be applied to other types of medical instruments having two blades (first and second blades), such as an anoscope. Moreover, the target of use of the medical device is not limited to human beings, and animals other than human beings may be used.

  The embodiments described above do not limit the scope of the invention to the configurations disclosed in the embodiments. The invention can be practiced in various other forms. The configurations disclosed in the embodiments and the modifications thereof are included in the invention described in the claims and the equivalent scope thereof.

  100, 200, 300 ... vaginal mirror, 1 ... upper blade, 2 ... lower blade, 3 ... first handle, 4 ... second handle, 5 ... connection member, 6 ... discharge pipe, 60 ... suction port, 61 ... discharge port , 62: first part, 63: second part, 64: bent part.

Claims (6)

A medical device inserted into the hole of a human or animal, comprising:
A cross section along a width direction which has a first inner surface, a first outer surface, a first base end and a first tip, and which intersects the extending direction from the first base to the first tip An arc-shaped first blade convex on the first outer surface side,
It has a second inner surface opposite to the first inner surface, a second outer surface, a second base end and a second tip, and intersects the extending direction from the second base to the second tip An arc-shaped second blade whose cross section along the width direction is convex on the side of the second outer surface;
A handle extending in a direction away from the first blade and the second blade at the second base end of the second blade;
A connection mechanism rotatably connecting the first base end and the second base end;
A discharge pipe having a suction port disposed in a space between the first inner surface and the second inner surface and a discharge port disposed outside the space;
Equipped with
The first proximal end and the second proximal end form an opening through which the inside of the hole can be seen from the outside,
The medical device , wherein the discharge pipe is provided to the first blade and extends away from the center of the opening on the first base end side . The discharge pipe passes through the opening,
Further, the discharge pipe includes a first portion having the suction port, a second portion having the discharge port, and a bending portion that bends between the first portion and the second portion,
The first portion extends along the first inner surface,
The second portion is adapted to tilt with respect to the first portion and extends in a direction away from the center of the opening,
The medical device according to claim 1. The angle between the axis of the first part and the axis of the second part is an obtuse angle,
The medical device according to claim 2. The first portion has a shape which is obliquely cut off toward the tip at the suction port, whereby the opening area of the suction port is a plane perpendicular to the axis of the first portion. Greater than the internal cross-sectional area of the first portion along
The medical device according to claim 2 or 3. The first portion or the bent portion has, in addition to the suction port, a hole having an opening area smaller than that of the suction port.
The medical device according to any one of claims 2 to 4. When viewed from the first base end side, the second portion extends in a direction away from the opening at an angle to the direction in which the first blade and the second blade are aligned.
The medical device according to any one of claims 2 to 5.

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