Medical device

Abstract

To provide a medical device that can be easily opened or closed with respect to a medical tool only by operating a handle part, enables a sandwiched medical device to be easily operated, and can be formed to be compact entirely.SOLUTION: A medical device 1 includes: a pair of sandwiching part 3 that can sandwich a guide wire G; and a handle part 5 that opens and closes such that the pair of sandwiching part 3 opens and closes with respect to the guide wire G. When the pair of sandwiching part 3 closes so as to sandwich the guide wire G, the handle part 5 forms an outer shape together with the pair of sandwiching part 3.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a medical device for rotating and advancing / retracting a medical instrument such as a guidewire. [Background technology]

[0002] Catheters that are inserted into lumens such as blood vessels of a patient have been known for some time. The doctor performing the procedure inserts a guidewire into the lumen of the catheter, causes the tip of the guidewire to protrude from the tip of the catheter, guides the catheter to the lesion along the guidewire, and places a device such as a stent or an embolization coil into the lesion through the lumen of the catheter that has reached the lesion.

[0003] Therefore, while guidewires have played a very important role in procedures for guiding catheters to the lesion, their extremely thin outer diameter and long length make them difficult to manipulate.

[0004] Therefore, in order to facilitate the rotational operation and the advancement and retreat operation of the guide wire, a method has been conventionally adopted in which a medical device is connected to the end of the guide wire outside the body.

[0005] For example, Patent Document 1 describes a medical device in which a guidewire connecting part 1 is connected to the base end of a guidewire 3 protruding from a hub part 4A of a microcatheter 4 (see FIG. 12, etc.).

[0006] The guidewire connecting portion 1 described in Patent Document 1 has a gripping portion 20 having a clothespin-like structure, and the gripping portion 20 is provided with a pair of gripping portions 21A and 21B that are rotatable relative to each other around a rotating shaft 23 and that come into contact with and grip the guidewire 3, and an elastic member 22 that biases the pair of gripping portions 21A and 21B toward the guidewire 3. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-200568 Summary of the Invention [Problem to be solved by the invention]

[0008] However, the medical device described in Patent Document 1 has a clothespin-like structure, and while the pair of gripping portions 21A and 21B can be easily opened and closed relative to the guide wire 3, there is a problem in that the guide wire connecting portion 1 itself is difficult to hold, making it difficult to rotate or move the guide wire forward and backward.

[0009] Generally, in procedures, it is desirable to quickly guide the catheter along the guidewire to the lesion and perform treatment promptly, so the operability of the medical device connected to the guidewire is a very important factor.

[0010] The present invention has been made in response to the above-mentioned problems of the conventional technology, and aims to provide a medical device that can be easily opened and closed relative to a medical instrument simply by operating the handle portion, that can easily operate the medical instrument that is clamped, and that can be configured so that the entire medical device is compact. [Means for solving the problem]

[0011] In order to solve the above-mentioned problems, the medical device of the first aspect of the present invention comprises a pair of clamping portions capable of clamping a medical instrument, and a handle portion that opens and closes so that the pair of clamping portions open and close relative to the medical instrument, and the handle portion forms an outer shape together with the pair of clamping portions when the pair of clamping portions close to clamp the medical instrument.

[0012] In addition, a second aspect of the present invention is characterized in that, in the medical device of the first aspect, at least one of the pair of clamping parts has a first recess for clamping the medical instrument.

[0013] In addition, a third aspect of the present invention is characterized in that, in the medical device of the first aspect, the handle portion, when forming its outer shape together with the pair of clamping portions, has a plurality of first convex portions formed on its outer periphery extending in a second direction intersecting the first direction in which the pair of clamping portions open and close.

[0014] In addition, a fourth aspect of the present invention is characterized in that, in the medical device of the second aspect, the handle portion, when forming its outer shape together with the pair of clamping portions, has a plurality of first convex portions formed on its outer periphery extending in a second direction that intersects with the first direction in which the pair of clamping portions open and close.

[0015] In addition, a fifth aspect of the present invention is characterized in that, in the medical device of the first aspect, the handle portion is arranged on each clamping portion and has a pair of axes extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each axis, and when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in cross section, and when the pair of clamping portions are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.

[0016] In addition, a sixth aspect of the present invention is characterized in that, in the medical device of the second aspect, the handle portion is arranged on each clamping portion and has a pair of axes extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each axis, and when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in cross section, and when the pair of clamping portions are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.

[0017] In addition, a seventh aspect of the present invention is characterized in that, in the medical device of the third aspect, the handle portion is arranged on each clamping portion and has a pair of axes extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each axis, and when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in cross section, and when the pair of clamping portions are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.

[0018] In addition, an eighth aspect of the present invention is characterized in that, in the medical device of the fourth aspect, the handle portion is arranged on each clamping portion and has a pair of axes extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each axis, and when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in cross section, and when the pair of clamping portions are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.

[0019] A ninth aspect of the present invention is characterized in that, in the medical device of the fifth aspect, the third direction end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in a closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.

[0020] In addition, a tenth aspect of the present invention is characterized in that, in the medical device of the sixth aspect, the third direction end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in a closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.

[0021] An eleventh aspect of the present invention is characterized in that, in the medical device of the seventh aspect, the third direction end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in a closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.

[0022] In addition, a twelfth aspect of the present invention is characterized in that, in the medical device of the eighth aspect, the third direction end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in a closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.

[0023] In addition, a thirteenth aspect of the present invention is characterized in that, in the medical device of the fifth aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion.

[0024] In addition, a 14th aspect of the present invention is characterized in that, in the medical device of the 6th aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion.

[0025] In addition, a 15th aspect of the present invention is characterized in that, in the medical device of the 7th aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion.

[0026] In addition, a 16th aspect of the present invention is characterized in that, in the medical device of the 8th aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion.

[0027] In addition, a 17th aspect of the present invention is characterized in that, in the medical device of the 9th aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion.

[0028] In addition, the 18th aspect of the present invention is characterized in that, in the medical device of the 10th aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion.

[0029] In addition, a 19th aspect of the present invention is characterized in that, in the medical device of the 11th aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion.

[0030] In addition, a 20th aspect of the present invention is characterized in that, in the medical device of the 12th aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion.

[0031] In addition, a 21st aspect of the present invention is characterized in that, in the medical device of the 9th aspect, the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with the at least one biasing portion, and the at least one biasing portion has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion.

[0032] In addition, a 22nd aspect of the present invention is characterized in that, in the medical device of the 10th aspect, the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with the at least one biasing portion, and the at least one biasing portion has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion.

[0033] In addition, a 23rd aspect of the present invention is characterized in that, in the medical device of the 11th aspect, the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with the at least one biasing portion, and the at least one biasing portion has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion.

[0034] In addition, a 24th aspect of the present invention is characterized in that, in the medical device of the 12th aspect, the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with the at least one biasing portion, and the at least one biasing portion has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion.

[0035] Furthermore, the 25th aspect of the present invention is a medical device according to any one of the first to 24th aspects, characterized in that when the pair of clamping portions are opened, a gap is formed throughout a fourth direction that intersects with the first direction in which the pair of clamping portions open and close. [Effects of the Invention]

[0036] According to the first aspect of the medical device of the present invention, the medical device comprises a pair of clamping sections capable of clamping a medical instrument, and a handle section that opens and closes the pair of clamping sections so that they open and close relative to the medical instrument. The handle section forms the outer shape together with the pair of clamping sections when the pair of clamping sections are closed to clamp the medical instrument, so that simply by operating the handle section, the medical device can be easily opened and closed relative to the medical instrument, and the clamped medical instrument can be easily operated, allowing the entire medical device to be configured compactly.

[0037] Furthermore, according to the second aspect of the present invention, in the medical device of the first aspect, at least one of the pair of clamping parts has a first recess on its surface for clamping a medical instrument, so that in addition to the effects of the medical device of the first aspect, the medical instrument can be clamped securely and the clamped medical instrument can be operated even more easily.

[0038] Furthermore, according to the third aspect of the present invention, in the medical device of the first aspect, when the handle portion forms its outer shape together with the pair of clamping portions, it has a plurality of first convex portions formed on its outer periphery that extend in a second direction that intersects with the first direction in which the pair of clamping portions open and close. Therefore, in addition to the effects of the medical device of the first aspect, the clamped medical instrument can be operated even more easily.

[0039] Furthermore, according to the fourth aspect of the present invention, in the medical device of the second aspect, when the handle portion forms its outer shape together with the pair of clamping portions, it has a plurality of first convex portions formed on its outer periphery that extend in a second direction that intersects with the first direction in which the pair of clamping portions open and close. Therefore, in addition to the effects of the medical device of the second aspect, the clamped medical instrument can be operated even more easily.

[0040] Furthermore, according to the fifth aspect of the present invention, in the medical device of the first aspect, the handle portion is arranged on each clamping portion and has a pair of axes extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each axis, and when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in cross section, and when the pair of clamping portions are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.Therefore, in addition to the effects of the medical device of the first aspect, by simply operating the handle portion, the medical device can be opened and closed more easily relative to the medical instrument, and the clamped medical instrument can be operated more easily, and the entire medical device can be configured to be more compact.

[0041] Furthermore, according to the sixth aspect of the present invention, in the medical device of the second aspect, the handle portion is disposed on each clamping portion and has a pair of axes extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each axis, and when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in cross section, and when the pair of clamping portions are closed, the pair of wing portions assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions. Therefore, in addition to the effects of the medical device of the second aspect, by simply operating the handle portion, the medical device can be opened and closed more easily relative to the medical instrument, and the clamped medical instrument can be operated more easily, and the entire medical device can be configured to be more compact.

[0042] Furthermore, according to the seventh aspect of the present invention, in the medical device of the third aspect, the handle portion is arranged on each clamping portion and has a pair of axes extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each axis, and when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in cross section, and when the pair of clamping portions are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.Therefore, in addition to the effects of the medical device of the third aspect, by simply operating the handle portion, the medical device can be opened and closed more easily relative to the medical instrument, and the clamped medical instrument can be operated more easily, and the entire medical device can be configured to be more compact.

[0043] Furthermore, according to an eighth aspect of the present invention, in the medical device of the fourth aspect, the invention according to claim 8 is a medical device according to claim 4, wherein the handle portion is disposed on each clamping portion and has a pair of axes extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each axis, and when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in cross section, and when the pair of clamping portions are closed, the pair of wing portions assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions. Therefore, in addition to the effects of the medical device of the fourth aspect, by simply operating the handle portion, the medical device can be opened and closed more easily relative to the medical instrument, and the clamped medical instrument can be operated more easily, and the entire medical device can be configured more compactly.

[0044] Furthermore, according to the ninth aspect of the present invention, in the medical device of the fifth aspect, the third direction end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in the closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts, so that in addition to the effects of the medical device of the fifth aspect, the operation of the handle portion can be maintained normally and the entire medical device can be configured to be even more compact.

[0045] Furthermore, according to the tenth aspect of the present invention, in the medical device of the sixth aspect, the third direction end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in the closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.Therefore, in addition to the effects of the medical device of the sixth aspect, the operation of the handle portion can be maintained normally and the entire medical device can be configured to be even more compact.

[0046] Furthermore, according to the 11th aspect of the present invention, in the medical device of the seventh aspect, the third direction end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in the closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts, so that in addition to the effects of the medical device of the seventh aspect, the operation of the handle portion can be maintained normally and the entire medical device can be configured to be even more compact.

[0047] Furthermore, according to the 12th aspect of the present invention, in the medical device of the 8th aspect, the third direction end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in the closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.Therefore, in addition to the effects of the medical device of the 8th aspect, the operation of the handle portion can be maintained normally and the entire medical device can be configured to be even more compact.

[0048] Furthermore, according to the thirteenth aspect of the present invention, in the medical device of the fifth aspect, at least one of the pair of clamping portions has a notch in the portion facing the other clamping portion, so that in addition to the effects of the medical device of the fifth aspect, the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions can be increased, and ultimately the size of the medical instrument to be clamped can be increased.

[0049] Furthermore, according to the 14th aspect of the present invention, in the medical device of the 6th aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion, so that in addition to the effects of the medical device of the 6th aspect, the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions can be increased, and ultimately the size of the medical instrument to be clamped can be increased.

[0050] Furthermore, according to the 15th aspect of the present invention, in the medical device of the 7th aspect, at least one of the pair of clamping portions has a notch in the portion facing the other clamping portion, so that in addition to the effects of the medical device of the 7th aspect, the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions can be increased, and ultimately the size of the medical instrument to be clamped can be increased.

[0051] Furthermore, according to the 16th aspect of the present invention, in the medical device of the 8th aspect, at least one of the pair of clamping portions has a notch in the portion facing the other clamping portion, so that in addition to the effects of the medical device of the 8th aspect, the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions can be increased, and ultimately the size of the medical instrument to be clamped can be increased.

[0052] Furthermore, according to the 17th aspect of the present invention, in the medical device of the 9th aspect, at least one of the pair of clamping portions has a notch in the portion facing the other clamping portion, so that in addition to the effects of the medical device of the 9th aspect, the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions can be increased, and ultimately the size of the medical instrument to be clamped can be increased.

[0053] Furthermore, according to the 18th aspect of the present invention, in the medical device of the 10th aspect, at least one of the pair of clamping portions has a notch portion in the portion facing the other clamping portion, so that in addition to the effects of the medical device of the 10th aspect, the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions can be increased, and ultimately the size of the medical instrument to be clamped can be increased.

[0054] Furthermore, according to the 19th aspect of the present invention, in the medical device of the 11th aspect, at least one of the pair of clamping portions has a notch in the portion facing the other clamping portion, so that in addition to the effects of the medical device of the 11th aspect, the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions can be increased, and ultimately the size of the medical instrument to be clamped can be increased.

[0055] Furthermore, according to the 20th aspect of the present invention, in the medical device of the 12th aspect, at least one of the pair of clamping portions has a notch in the portion facing the other clamping portion, so that in addition to the effects of the medical device of the 12th aspect, the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions can be increased, and ultimately the size of the medical instrument to be clamped can be increased.

[0056] Furthermore, according to the 21st aspect of the present invention, in the medical device of the 9th aspect, the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with at least one of the biasing portions, and at least one of the biasing portions has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion, so that in addition to the effects of the medical device of the 9th aspect, the connection strength between the biasing portions and the clamping portions is improved, and the clamping portions can be opened and closed reliably.

[0057] Furthermore, according to the 22nd aspect of the present invention, in the medical device of the 10th aspect, the pair of clamping portions have a second convex portion or a second concave portion on the contact surface with at least one of the biasing portions, and at least one of the biasing portions has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion, so that in addition to the effects of the medical device of the 10th aspect, the connection strength between the biasing portions and the clamping portions is improved, and the clamping portions can be opened and closed reliably.

[0058] Furthermore, according to the 23rd aspect of the present invention, in the medical device of the 11th aspect, the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with at least one of the biasing portions, and at least one of the biasing portions has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion, so that in addition to the effects of the medical device of the 11th aspect, the connection strength between the biasing portions and the clamping portions is improved, and the clamping portions can be opened and closed reliably.

[0059] Furthermore, according to the 24th aspect of the present invention, in the medical device of the 12th aspect, the pair of clamping portions have a second convex portion or a second concave portion on the contact surface with at least one of the biasing portions, and at least one of the biasing portions has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion, so that in addition to the effects of the medical device of the 12th aspect, the connection strength between the biasing portions and the clamping portions is improved and the clamping portions can be opened and closed reliably.

[0060] Furthermore, according to the 25th aspect of the present invention, in a medical device of any of the first to 24th aspects, when the pair of clamping portions are opened, a gap is formed throughout the entire fourth direction that intersects with the first direction in which the pair of clamping portions open and close, so that in addition to the effects of the medical device of any of the first to 24th aspects, the medical device can be securely clamped not only at the ends but also in the middle of the medical device. [Brief explanation of the drawings]

[0061] [Figure 1]FIG. 1 is a view showing a state in which the medical device of the first embodiment of the present invention is used on a guide wire that has passed through a catheter. [Figure 2] FIG. 1 is a perspective view of a medical device according to a first embodiment. [Figure 3] FIG. 2 is a perspective view showing the medical device of the first embodiment with wing portions spread out. [Figure 4] FIG. 2 is a right side view of the medical device according to the first embodiment. [Figure 5] 3 is a cross-sectional view taken along the line AA in FIG. 2. [Figure 6] FIG. 4 is a cross-sectional view of FIG. 3 taken along line B-B. [Figure 7] 4 is a cross-sectional view taken along CC in FIG. 3. [Figure 8] 4 is a cross-sectional view taken along the line DD in FIG. 3, showing the medical device of the first embodiment with its wing portions closed. FIG. [Figure 9] 4 is a cross-sectional view taken along the line DD in FIG. 3, showing the medical device of the first embodiment with wing portions slightly expanded. [Figure 10] FIG. 4 is a cross-sectional view taken along the line DD in FIG. 3. [Figure 11] 6 is a cross-sectional view taken along the line DD in FIG. 3 showing the medical device of the first embodiment with the wing portions further expanded and the left and right lever portions open. FIG. [Figure 12] 4 is a cross-sectional view taken along the line DD in FIG. 3 showing the medical device of the first embodiment in a state in which the left and right lever portions are clamping the guide wire. FIG. [Figure 13] 6 is a cross-sectional view taken along the line DD in FIG. 3, showing the medical device of the second embodiment with its wing portions closed. [Figure 14] 10 is a cross-sectional view corresponding to the DD cross section of FIG. 3 in a state in which the left and right lever portions of the medical device according to the second embodiment clamp the guide wire. FIG. [Figure 15] FIG. 15 is an enlarged view of part E in FIG. [Figure 16] FIG. 10 is a perspective view of a medical device according to a third embodiment. [Figure 17] FIG. 10 is a perspective view showing a state in which the wing portions of the medical device according to the third embodiment are spread out. [Figure 18] 10 is a cross-sectional view taken along the line DD in FIG. 3, showing the medical device of the third embodiment with its wing portions closed. [Figure 19] 10 is a cross-sectional view taken along the line DD in FIG. 3, showing the medical device of the third embodiment with its wing portions slightly expanded. [Figure 20] FIG. 18 is a cross-sectional view equivalent to the cross section DD of FIG. [Figure 21] 10 is a cross-sectional view taken along the line DD in FIG. 3, showing the medical device of the third embodiment with the wing portions further expanded and the left and right lever portions open. FIG. [Figure 22] 10 is a cross-sectional view equivalent to the DD cross section of FIG. 3 in a state in which the left and right lever portions of the medical device according to the third embodiment clamp the guidewire. FIG. [Figure 23] 10 is a cross-sectional view taken along line DD in FIG. 3, showing the medical device of the fourth embodiment with the wing portions slightly expanded. [Figure 24] 10 is a cross-sectional view taken along the line DD in FIG. 3, showing the medical device of the fourth embodiment with the wing portions further expanded and the left and right lever portions open. FIG. [Figure 25] 10 is a cross-sectional view equivalent to the DD cross section of FIG. 3 in a state in which the left and right lever portions of the medical device according to the fourth embodiment clamp the guide wire. FIG. [Figure 26] FIG. 10 is a view corresponding to FIG. 4 of a medical device according to a fifth embodiment. [Figure 27] FIG. 13 is a perspective view showing a state in which the wing portions of the medical device according to the sixth embodiment are spread out. DETAILED DESCRIPTION OF THE INVENTION

[0062] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0063] (First embodiment) First, a first embodiment of the present invention will be described. Note that the drawings used in this embodiment are exaggerated to facilitate understanding, and the dimensions are different from the actual dimensions.

[0064] Furthermore, in this embodiment and the embodiments described below, for convenience of explanation, the width direction of the front of the medical device is referred to as the +X and -X directions, the longitudinal direction of the side of the medical device is referred to as the +Y and -Y directions, and the height direction of the medical device is referred to as the +Z and -Z directions, with the +X direction being the right side, the -X direction being the left side, the +Y direction being the base end side, the -Y direction being the tip end side, the +Z direction being the upper side, and the -Z direction being the lower side.

[0065] FIG. 1 is a diagram showing a medical device according to a first embodiment of the present invention used in a guide wire passing through a catheter, FIG. 2 is a perspective view of the medical device according to the first embodiment, and FIG. 3 is a perspective view of the medical device according to the first embodiment with the wing portions spread out.

[0066] 4 is a right side view of the medical device of the first embodiment, FIG. 5 is a cross-sectional view taken along line AA in FIG. 2, FIG. 6 is a cross-sectional view taken along line BB in FIG. 3, FIG. 7 is a cross-sectional view taken along line CC in FIG. 3, and FIG. 8 is a cross-sectional view taken along line DD in FIG. 3 when the medical device of the first embodiment has its wing portions closed.

[0067] 9 is a DD cross-sectional view of FIG. 3 in a state where the wing portions of the medical device of the first embodiment are slightly expanded, FIG. 10 is a DD cross-sectional view of FIG. 3, FIG. 11 is a DD cross-sectional view of FIG. 3 in a state where the wing portions of the medical device of the first embodiment are further expanded and the left and right lever portions are open, and FIG. 12 is a DD cross-sectional view of FIG. 3 in a state where the left and right lever portions of the medical device of the first embodiment are clamping a guide wire.

[0068] As shown in FIG. 1, the medical device 1 of this embodiment and the medical devices in the embodiments described below clamp a guidewire G inserted into a catheter 100 consisting of a catheter body 102, a distal tip 104, and a connector 106 on the proximal side of the connector 106, and perform rotational and forward / backward operations on the guidewire.

[0069] As shown in Figures 1 to 3, the medical device 1 is composed of a pair of clamping sections 3 that can clamp a guide wire G, a handle section 5 that opens and closes the pair of clamping sections 3 relative to the guide wire G, and a clip section 7 that biases the pair of clamping sections 3 in the direction of closing.

[0070] The pair of clamping portions 3 open and close the guidewire G so as to be attachable and detachable in a direction perpendicular to the longitudinal direction of the guidewire G. As shown in Figures 1 to 8, the pair of clamping portions 3 have a generally cylindrical shape so as to be easily gripped by an operator, and include a left lever portion 3a that is rotatable about a lever rotation convex portion 3bc3 (described later) and that extends over a predetermined length in the +Y and -Y directions, which are the longitudinal direction of the medical device 1, and a right lever portion 3b that is rotatable about the lever rotation convex portion 3bc3 (described later) and that extends to approximately the same length as the left lever portion 3a in the +Y and -Y directions.

[0071] The left lever portion 3a is provided with a left wing storage cavity portion 4ag(4) in the center in the +Y·-Y direction for storing the left wing portion 5a described later, a left bearing portion 2ag extending in the +Y·-Y direction (corresponding to the "third direction" of the present invention) between the distal clip portion 7a and the proximal clip portion 7b described later for inserting the left shaft portion 2a described later as the rotation center of the left wing portion 5a described later, and a left wire holding portion 8a(8) with a high friction coefficient formed on the surface for holding a medical device such as a guide wire G.

[0072] In addition, the left lever portion 3a is provided with a left clip recess 3ar1 (equivalent to the ``second recess'' of the present invention) on the tip side and base side of the center in the +Y and -Y directions for fitting with the clip portion 7 described later, a left rotational locking portion 3ac1 on the tip side and base side of the center in the +Y and -Y directions for abutting against the right lever portion 3b when the handle portion 5 described later is opened, thereby regulating the opening angle of the handle portion 5, and a lever rotation recess 3ar3 (equivalent to the ``cutout portion'' of the present invention) having an approximately cylindrical shape that slides against the right lever portion 3b when the clamping portion 3 rotates, on the tip side and base side of the center in the +Y and -Y directions.

[0073] Furthermore, the left lever portion 3a is provided with a left lever receiving portion 3as for contacting the left wing portion 5a described later, and a left wing recess 3ar2 formed so that the left wing cylindrical portion 5at of the left wing portion 5a described later can rotate.

[0074] Like the left lever portion 3a, the right lever portion 3b is provided with a right wing storage cavity portion 4bg(4) in the center in the +Y·-Y direction for storing the right wing portion 5b described later, a right bearing portion 2bg extending in the +Y·-Y direction (corresponding to the "third direction" of the present invention) between the tip-end clip portion 7a and the base-end clip portion 7b described later for inserting the right shaft portion 2b described later as the rotation center of the right wing portion 5b described later, and a right wire holding portion 8b(8) with a high friction coefficient formed on the surface for holding a medical device such as a guide wire G.

[0075] In addition, the right lever portion 3b is provided with a right clip recess 3br1 (corresponding to the ``second recess'' of the present invention) on the tip side and base side of the center in the +Y and -Y directions for fitting with the clip portion 7 described later, a right rotating locking portion 3bc1 on the tip side and base side of the center in the +Y and -Y directions for abutting against the left lever portion 3a when the handle portion 5 described later is opened, and a lever rotating convex portion 3bc3 having an approximately cylindrical shape that slides against the right lever portion 3b when the clamping portion 3 rotates, on the tip side and base side of the center in the +Y and -Y directions.

[0076] Furthermore, the right lever portion 3b is provided with a right lever receiving portion 3bs for abutting against the right wing portion 5b described later, and a right wing recess 3br2 formed so that the right wing cylindrical portion 5bt of the right wing portion 5b described later can rotate.

[0077] The material forming the left lever portion 3a and the right lever portion 3b that make up the pair of clamping portions 3 is not particularly limited, but resin materials such as ABS resin, polyacetal (POM), polycarbonate (PC), polypropylene (PP), polyethylene (PE), PEEK resin, polyphenylene sulfide (PPS), polyetherimide (PEI), etc. can be used, and in this embodiment, ABS resin is used.

[0078] The handle portion 5 opens and closes in the same way as the pair of clamping portions 3 open and close, and as shown in Figures 1 to 8, is arranged in the center of the medical device 1 in the +Y·-Y direction, and comprises a left wing portion 5a (corresponding to the "wing portion" of the present invention) that is rotatable around the left shaft portion 2a described later, and a right wing portion 5b (corresponding to the "wing portion" of the present invention) that is formed to be approximately the same length as the left wing portion 5a in the +Y·-Y direction and that is rotatable around the right shaft portion 2b described later.

[0079] The left wing portion 5a has an arc-shaped cross section and is equipped with a left wing pressing portion 5as that rotates to abut against the left lever receiving portion 3as, a left wing cylindrical portion 5at that can rotate around the left shaft portion 2a described below, and a plurality of left convex portions 9a (corresponding to the ``first convex portions'' of the present invention) extending in the +Y·-Y direction (corresponding to the ``second direction'' of the present invention) on the outer surface to make it easier to operate the medical device 1 that clamps the guide wire G.

[0080] Like the left wing portion 5a, the right wing portion 5b has an arc-shaped cross section and is equipped with a right wing pressing portion 5bs that rotates to abut against the right lever receiving portion 3bs, a right wing cylindrical portion 5bt that can rotate around the right shaft portion 2b described below, and multiple right protrusions 9b (corresponding to the ``first protrusions'' of the present invention) extending in the +Y and -Y directions on the outer surface to make it easier to operate the medical device 1 that clamps the guide wire G.

[0081] The material for forming the left wing portion 5a and the right wing portion 5b constituting the handle portion 5 is not particularly limited, but resin materials such as ABS resin, polyacetal (POM), polycarbonate (PC), polypropylene (PP), polyethylene (PE), PEEK resin, polyphenylene sulfide (PPS), polyetherimide (PEI), etc. can be used, and in this embodiment, ABS resin is used.

[0082] The shaft 2 is provided to rotate the handle portion 5, and as shown in Fig. 5, is disposed between a distal clip portion 7a and a proximal clip portion 7b (described later) in the +Y and -Y directions, penetrating the handle portion 5 and the clamping portion 3, thereby allowing the handle portion 5 to rotate in the +θ and -θ directions (corresponding to the "first direction" of the present invention) around the shaft 2, with the clamping portion 3 as a bearing. Note that in Figs. 6 to 25, the +θ direction is the direction in which the handle portion opens relative to the pair of clamping portions, and the -θ direction is the direction in which the handle portion closes relative to the pair of clamping portions.

[0083] Furthermore, in this embodiment, both ends of the shaft portion 2 in the +Y and -Y directions are supported so as to abut against the distal clip portion 7a and the proximal clip portion 7b, thereby restricting movement of the shaft portion 2 in the +Y and -Y directions, maintaining normal operation of the handle portion 5, and enabling the entire medical device 1 to be configured even more compactly.

[0084] As shown in Figures 8 to 12, the shaft portion 2 is provided on each of the left wing portion 5a and the right wing portion 5b. Specifically, the left shaft portion 2a is provided at the center of the left wing cylindrical portion 5at of the left wing portion 5a, and the right shaft portion 2b is provided at the center of the right wing cylindrical portion 5bt of the right wing portion 5b.

[0085] The material forming the left shaft portion 2a and the right shaft portion 2b that make up the shaft portion 2 is not particularly limited, but metal materials such as stainless steel, carbon steel for mechanical structures (S45C or S43C), etc. can be used, and in this embodiment, stainless steel is used.

[0086] As shown in Figures 1 to 7, the clip portion 7 (corresponding to the "urging portion" of the present invention) has a U-shape in cross section and is made of an elastic body with spring properties. It is attached so as to cover the pair of clamping portions 3 from above and is configured to urge the pair of clamping portions 3 to close.

[0087] The clip portion 7 includes a distal clip portion 7a and a proximal clip portion 7b on the distal and proximal sides, respectively, of the central portion in the +Y and -Y directions.

[0088] In addition, the distal clip portion 7a is formed with a clip left convex portion 7ac1 (corresponding to the "third convex portion" of the present invention) and a clip right convex portion 7ac2 (corresponding to the "third convex portion" of the present invention) for fitting into the left clip recess 3ar1 and the right clip recess 3br1, and the proximal clip portion 7b is formed with a clip left convex portion 7bc1 (not shown, but formed on the proximal clip portion 7b in the same manner as the left clip convex portion 7ac1, and corresponding to the "third convex portion" of the present invention) and a clip right convex portion 7bc2 (not shown, but formed on the proximal clip portion 7b in the same manner as the left clip convex portion 7ac2, and corresponding to the "third convex portion" of the present invention) for fitting into the left clip recess 3ar1 and the right clip recess 3br1.

[0089] In this embodiment, the left lever portion 3a and the right lever portion 3b are provided with a left clip recess 3ar1 (corresponding to the "second recess" of the present invention) and a right clip recess 3br1 (corresponding to the "second recess" of the present invention), the tip-end clip portion 7a is provided with a left clip convex portion 7ac1 (corresponding to the "third convex portion" of the present invention) and a right clip convex portion 7ac2 (corresponding to the "third convex portion" of the present invention) for fitting into the left clip recess 3ar1 and the right clip recess 3br1, and the base-end clip portion 7b is provided with a left clip convex portion 7bc1 (corresponding to the "third convex portion" of the present invention) and a right clip convex portion 7bc2 (corresponding to the "third convex portion" of the present invention) for fitting into the left clip recess 3ar1 and the right clip recess 3br1. However, it is also possible to provide a left clip convex portion (corresponding to the "second convex portion" of the present invention) and a right clip convex portion (corresponding to the "second convex portion" of the present invention) on the left lever portion 3a and the right lever portion 3b, to provide a left clip recess (corresponding to the "third recess" of the present invention) and a right clip recess (corresponding to the "third recess" of the present invention) for fitting into the left clip convex portion and the right clip convex portion on the distal clip portion 7a, and to provide a left clip recess (corresponding to the "third recess" of the present invention) and a right clip recess (corresponding to the "third recess" of the present invention) for fitting into the left clip convex portion and the right clip convex portion on the proximal clip portion 7b.

[0090] In addition, the tip-end clip portion 7a has a clip left locking portion 7as1 for locking onto the left lever portion 3a and a clip right locking portion 7as2 for locking onto the right lever portion 3b, and the base-end clip portion 7b has a clip left locking portion 7bs1 for locking onto the left lever portion 3a (not shown, but formed on the base-end clip portion 7b in the same way as the clip left locking portion 7as1) and a clip right locking portion 7bs2 for locking onto the right lever portion 3b (not shown, but formed on the base-end clip portion 7b in the same way as the clip right locking portion 7as2).

[0091] In addition, the tip-side clip portion 7a is configured to abut against and support the tip-side end of the shaft portion 2 to prevent the tip-side end of the shaft portion 2 from protruding, and the base-side clip portion 7b is also configured to abut against and support the base-side end of the shaft portion 2 to prevent the base-side end of the shaft portion 2 from protruding.

[0092] The material forming the distal clip portion 7a and the proximal clip portion 7b that constitute the clip portion 7 is not particularly limited, but resin materials such as polyacetal (POM), polycarbonate (PC), PEEK resin, polyphenylene sulfide (PPS), polyetherimide (PEI), etc. can be used, and in this embodiment, polyacetal (POM) is used.

[0093] Next, a case where an operator uses the medical device 1 described above will be described.

[0094] When an operator uses the medical device 1, first, the operator inserts the guide wire G from the base end of the catheter 100, and with the tip of the guide wire G protruding from the tip of the catheter 100, the operator spreads the left wing portion 5a and the right wing portion 5b of the medical device 1 in the +θ direction against the biasing force of the clip portion 7.

[0095] Then, the left wing portion 5a rotates around the left shaft portion 2a and comes into contact with the left lever receiving portion 3as, and the right wing portion 5b rotates around the right shaft portion 2b and comes into contact with the right lever receiving portion 3bs.

[0096] FIG. 8 shows the medical device 1 with the left wing portion 5a and the right wing portion 5b closed, FIG. 9 shows the left wing portion 5a and the right wing portion 5b slightly spread apart, and FIG. 10 shows the left wing portion 5a further spread apart to abut against the left lever receiving portion 3as, and the right wing portion 5b further spread apart to abut against the right lever receiving portion 3bs.

[0097] When the operator further spreads the left wing portions 5a and 5b in the +θ direction against the biasing force of the clip portion 7, the left wing pressing portion 5as presses down the left lever receiving portion 3as, and the right wing pressing portion 5bs presses down the right lever receiving portion 3bs, causing the left lever portion 3a and the right lever portion 3b to open, and consequently the left wire holding portion 8a and the right wire holding portion 8b to open (see Figure 11).

[0098] In this embodiment, when the left lever portion 3a and the right lever portion 3b are opened and the pair of clamping portions 3 are released, the left wing portion 5a and the left wing portion 5a extend beyond the outer shape of the pair of clamping portions 3 in cross section, and when the pair of clamping portions 3 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 3.

[0099] In addition, in this embodiment, when the left lever portion 3a and the right lever portion 3b open, and accordingly the left wire holding portion 8a and the right wire holding portion 8b open, a gap is formed throughout the +Y·-Y direction (corresponding to the "fourth direction" of the present invention) that intersects with the +θ·-θ direction in which the pair of clamping portions 3 open and close, so that the guide wire G can be inserted at any position.

[0100] Then, the guide wire G is inserted into the open area, and then the left wing portion 5a and the right wing portion 5b are closed in the -θ direction in accordance with the biasing force of the clip portion 7, so that the guide wire G is clamped between the left wire holding portion 8a and the right wire holding portion 8b (see Figure 12).

[0101] The operator then clamps the guide wire G and, by grasping and manipulating the medical device 1, which has become approximately cylindrical so as to form the outer shape of the medical device 1 together with the pair of clamping portions 3, can easily perform rotational and forward / backward operations on the guide wire G.

[0102] The medical device 1 of this embodiment is equipped with a pair of clamping portions 3 that can clamp a guidewire G, and a handle portion 5 that opens and closes the pair of clamping portions 3 relative to the guidewire G. When the pair of clamping portions 3 are closed to clamp the guidewire G, the handle portion 5 forms an outer shape together with the pair of clamping portions 3. Therefore, simply by operating the handle portion 5, the medical device 1 can be easily opened and closed relative to the guidewire G, and the clamped guidewire G can be easily operated, allowing the entire medical device 1 to be configured compactly.

[0103] Furthermore, the medical device 1 of this embodiment is equipped with a pair of clamping portions 3 capable of clamping a guidewire G, and a handle portion 5 that opens and closes the pair of clamping portions 3 relative to the guidewire G. When the pair of clamping portions 3 are closed to clamp the guidewire G, the handle portion 5 is stored in the left wing storage space 4ag and the right wing storage space 4bg of the pair of clamping portions 3. Therefore, by simply operating the handle portion 5, the medical device 1 can be easily opened and closed relative to the guidewire G, and the clamped guidewire G can be easily operated, allowing the entire medical device 1 to be configured compactly.

[0104] Furthermore, according to the medical device 1 of this embodiment, when the handle portion 5 forms its outer shape together with the pair of clamping portions 3, it has multiple left convex portions 9a and right convex portions 9b formed on its outer periphery that extend in the +Y·-Y direction that intersects with the +θ·-θ direction in which the pair of clamping portions 3 open and close, making it even easier to operate the clamped guide wire G.

[0105] Furthermore, according to the medical device 1 of this embodiment, the handle portion 5 is arranged at each clamping portion and has a pair of shaft portions 2 extending in the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 3 open and close, and a pair of wing portions 5a and 5b having an arc-shaped cross section that rotates around each of the shaft portions 2a and 2b.When the pair of clamping portions 3 are open, the pair of wing portions 5a and 5b extend beyond the outer shape of the pair of clamping portions 3 in cross section, and when the pair of clamping portions 3 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 3.Therefore, by simply operating the handle portion 5, the medical device 1 can be opened and closed more easily relative to the guidewire G, and the clamped guidewire G can be operated even more easily, allowing the entire medical device 1 to be configured more compactly.

[0106] Furthermore, according to the medical device 1 of this embodiment, the +Y·-Y direction ends of the handle portion 5 are provided with a distal clip portion 7a and a proximal clip portion 7b that urge the pair of clamping portions 3 in the closing direction, and the distal clip portion 7a and the proximal clip portion 7b are configured to support both ends of the pair of shaft portions 2, thereby maintaining normal operation of the handle portion 5 and making the entire medical device 1 even more compact.

[0107] Furthermore, according to the medical device 1 of this embodiment, the left lever portion 3a of the pair of clamping portions 3 has a lever rotation recess 3ar3 at the portion facing the right lever portion 3b, so that the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions 3 can be increased, and ultimately the size of the guide wire G to be clamped can be increased.

[0108] Furthermore, according to the medical device 1 of this embodiment, the pair of clamping portions 3 have a left clip recess 3ar1 and a right clip recess 3br1 on the contact surfaces with the distal clip portion 7a and the proximal clip portion 7b, and the distal clip portion 7a and the proximal clip portion 7b have a left clip convex portion 7ac1, a right clip convex portion 7ac2, a left clip convex portion 7bc1 and a right clip convex portion 7bc2 facing the left clip recess 3ar1 and the right clip recess 3br1, thereby improving the connection strength between the distal clip portion 7a and the proximal clip portion 7b and the pair of clamping portions 3, and enabling the clamping portions to be opened and closed reliably.

[0109] Furthermore, according to the medical device 1 of this embodiment, when the pair of clamping portions 3 are opened, a gap is formed throughout the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 3 open and close, so that not only the end portion of the guide wire G but also the middle portion of the guide wire G can be securely clamped.

[0110] (Second embodiment) Next, a second embodiment of the present invention will be described. Note that the drawings used in this embodiment are also exaggerated to facilitate understanding, and the dimensions are different from the actual dimensions.

[0111] A second embodiment of the present invention will be described below, but parts common to the first embodiment will be given the same reference numerals and descriptions thereof will be omitted.

[0112] The medical device 10 of this embodiment differs from the medical device 1 of the first embodiment in that the left lever portion has a recess for clamping the guide wire G.

[0113] Figure 13 is a cross-sectional view equivalent to the DD cross section of Figure 3 in which the medical device of the second embodiment has its wing portions closed, Figure 14 is a cross-sectional view equivalent to the DD cross section of Figure 3 in which the left and right lever portions of the medical device of the second embodiment are clamping a guide wire, and Figure 15 is an enlarged view of part E of Figure 14.

[0114] As shown in Figures 13 to 15, the medical device 10 of this embodiment is composed of a pair of clamping sections 13 capable of clamping a guidewire G, a handle section 5 that opens and closes the pair of clamping sections 13, and a clip section 7 that biases the pair of clamping sections 13 in a direction to close them. (Note that the handle section 5 and clip section 7 are not shown in Figures 13 to 15, but have the same configuration as the handle section 5 and clip section 7 of the first embodiment.)

[0115] The pair of clamping portions 13 open and close the guidewire G so as to be attachable and detachable in a direction perpendicular to the longitudinal direction of the guidewire G. As shown in Figures 13 to 15, the pair of clamping portions 13 have a generally cylindrical shape so as to be easily gripped by an operator, and include a left lever portion 13a rotatable about a lever rotation convex portion 13bc3 (not shown in Figures 13 to 15, but having the same shape as the lever rotation convex portion 3bc3 of the first embodiment) and formed over a predetermined length in the +Y and -Y directions, which are the longitudinal directions of the medical device 10, and a right lever portion 13b rotatable about the lever rotation convex portion 13bc3 and formed to have approximately the same length as the left lever portion 13a in the +Y and -Y directions.

[0116] The left lever portion 13a includes a left wing storage cavity 4ag for storing the left wing portion 5a in the center in the +Y and -Y directions, a left bearing portion 2ag extending in the +Y and -Y directions between the distal clip portion 7a and the proximal clip portion 7b for inserting the left shaft portion 2a serving as the rotation center of the left wing portion 5a, and a recess 18 (corresponding to the "first recess" of the present invention) having a triangular shape in cross section formed on the surface for holding a medical device such as a guidewire G. (Note that the left wing storage cavity 4ag, distal clip portion 7a, and proximal clip portion 7b are not shown in FIGS. 13 to 15, but have the same shapes as the left wing storage cavity 4ag, distal clip portion 7a, and proximal clip portion 7b of the first embodiment.)

[0117] It is preferable that recess 18 be shaped in a cross-sectional view so that when guidewire G is placed, the surface of guidewire G protrudes from recess 18. This allows guidewire G to be firmly clamped between left lever portion 13a and right lever portion 13b, making it easier for the operator to operate the guidewire thereafter.

[0118] In addition, the left lever portion 13a is provided with a left clip recess 13ar1 (not shown, but has the same shape as the left clip recess 3ar1 of the first embodiment) for fitting into the clip portion 7, located closer to the tip and base end than the central portion in the +Y·-Y direction, a rotating left locking portion 13ac1 (not shown, but has the same shape as the rotating left locking portion 3ac1 of the first embodiment) located closer to the tip and base end than the central portion in the +Y·-Y direction, which abuts against the right lever portion 13b when the handle portion 5 is opened to regulate the opening angle of the handle portion 5, and a roughly cylindrical lever rotation recess 13ar3 (corresponding to the ``cutout portion'' of the present invention, not shown, but has the same shape as the lever rotation recess 3ar3 of the first embodiment) located closer to the tip and base end than the central portion in the +Y·-Y direction, which slides against the left lever portion 13a when the clamping portion 13 rotates.

[0119] Furthermore, the left lever portion 13a includes a left lever receiving portion 13as for contacting the left wing portion 5a, and a left wing recess 13ar2 formed so that the left wing cylindrical portion 5at of the left wing portion 5a can rotate.

[0120] The right lever portion 13b includes a right wing storage cavity 4bg for storing the right wing portion 5b in the center in the +Y and -Y directions, and a right bearing portion 2bg extending in the +Y and -Y directions between the distal clip portion 7a and the proximal clip portion 7b for inserting a right shaft portion 2b (described later) serving as a rotation center for the right wing portion 5b. (Note that the right wing storage cavity 4bg, distal clip portion 7a, and proximal clip portion 7b are not shown in FIGS. 13 to 15, but have the same configurations as the right wing storage cavity 4bg, distal clip portion 7a, and proximal clip portion 7b of the first embodiment.)

[0121] The right lever 13b does not have the recess 18 formed therein as in the left lever portion 13a, and the area for clamping the guide wire G is flat.

[0122] In addition, the right lever portion 13b is provided with a right clip recess 13br1 (not shown in the figures but having the same shape as the right clip recess 3br1 of the first embodiment) on the tip side and base side of the central portion in the +Y and -Y directions for fitting with the clip portion 7 described later, a rotating right locking portion 13bc1 (not shown in Figures 13 to 15 but having the same shape as the rotating right locking portion 3bc1 of the first embodiment) on the tip side and base side of the central portion in the +Y and -Y directions for abutting against the left lever portion 13a when the handle portion 5 is opened to regulate the opening angle of the handle portion 5, and a lever rotation convex portion 13bc3 (not shown in Figures 13 to 15 but having the same shape as the lever rotation convex portion 3bc3 of the first embodiment) having an approximately cylindrical shape that slides against the right lever portion 13b when the clamping portion 13 rotates on the tip side and base side of the central portion in the +Y and -Y directions.

[0123] Furthermore, the right lever portion 13b is provided with a right lever receiving portion 13bs for contacting the right wing portion 5b, and a right wing recess 13br2 formed so that the right wing cylindrical portion 5bt of the right wing portion 5b can rotate.

[0124] The material forming the left lever portion 13a and the right lever portion 13b can be the same as that of the left lever portion 3a and the right lever portion 3b in the first embodiment, and in this embodiment, ABS resin is used.

[0125] Next, a case where an operator uses the medical device 10 described above will be described.

[0126] When an operator uses the medical device 10, first, the operator inserts the guide wire G from the base end of the catheter 100, and with the tip of the guide wire G protruding from the tip of the catheter 100, the operator spreads the left wing portion 5a and the right wing portion 5b of the medical device 1 in the +θ direction against the biasing force of the clip portion 7.

[0127] Then, the left wing portion 5a rotates around the left shaft portion 2a and comes into contact with the left lever receiving portion 13as, and the right wing portion 5b rotates around the right shaft portion 2b and comes into contact with the right lever receiving portion 13bs.

[0128] When the operator further spreads the left wing portion 5a and the left wing portion 5b in the +θ direction against the biasing force of the clip portion 7, the left wing pressing portion 5as presses down the left lever receiving portion 13as, and the right wing pressing portion 5bs presses down the right lever receiving portion 13bs, thereby opening the left lever portion 13a and the right lever portion 13b, which have recesses 18.

[0129] When the left lever portion 13a and the right lever portion 13b are opened and the pair of clamping portions 13 are released, the left wing portion 5a and the right wing portion 5b expand beyond the outer shape of the pair of clamping portions 13 in cross section, and when the pair of clamping portions 13 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 13.

[0130] In addition, in this embodiment, when the left lever portion 13a and the right lever portion 13b are opened, a gap is formed throughout the +Y·-Y direction that intersects with the +θ·-θ direction in which the pair of clamping portions 13 open and close, so that the guide wire G can be inserted at any point.

[0131] Then, the guide wire G is inserted into the open area, and then the left wing portion 5a and the right wing portion 5b are closed in the -θ direction in accordance with the biasing force of the clip portion 7, so that the guide wire G is clamped between the recess 18 of the left lever portion 13a and the right lever portion 13b.

[0132] The operator then clamps the guide wire G and, by grasping and manipulating the medical device 10, which has become approximately cylindrical in shape so as to form the outer shape of the medical device 10 together with the pair of clamping portions 13, can easily perform rotational and forward / backward operations on the guide wire G.

[0133] In this embodiment, the configuration has been described in which recess 18 is formed only in left lever portion 13a and not in right lever 13b, but recess 18 may be formed in both left lever portion 13a and right lever 13b.

[0134] The medical device 10 of this embodiment is equipped with a pair of clamping portions 13 that can clamp a guidewire G, and a handle portion 5 that opens and closes the pair of clamping portions 13 relative to the guidewire G. When the pair of clamping portions 13 are closed to clamp the guidewire G, the handle portion 5 forms an outer shape together with the pair of clamping portions 13. Therefore, simply by operating the handle portion 5, the medical device 10 can be easily opened and closed relative to the guidewire G, and the clamped guidewire G can be easily operated, allowing the entire medical device 10 to be configured compactly.

[0135] Furthermore, the medical device 10 of this embodiment is equipped with a pair of clamping portions 13 capable of clamping a guidewire G, and a handle portion 5 that opens and closes the pair of clamping portions 13 relative to the guidewire G. When the pair of clamping portions 13 are closed to clamp the guidewire G, the handle portion 5 is stored in the left wing storage space 4ag and the right wing storage space 4bg of the pair of clamping portions 13. Therefore, by simply operating the handle portion 5, the medical device 10 can be easily opened and closed relative to the guidewire G, and the clamped guidewire G can be easily operated, allowing the entire medical device 10 to be configured compactly.

[0136] Furthermore, according to the medical device 10 of this embodiment, the left lever portion 13a of the pair of clamping portions 13 has a recess 18 on its surface for clamping the guide wire G, so that the guide wire can be securely clamped and the clamped guide wire can be operated even more easily.

[0137] Furthermore, according to the medical device 10 of this embodiment, when the handle portion 5 forms its outer shape together with the pair of clamping portions 13, it has multiple left convex portions 9a and right convex portions 9b formed on its outer periphery that extend in the +Y·-Y direction that intersects with the +θ·-θ direction in which the pair of clamping portions 13 open and close, making it even easier to operate the clamped guide wire G.

[0138] Furthermore, according to the medical device 10 of this embodiment, the handle portion 5 is arranged at each clamping portion and has a pair of shaft portions 2 extending in the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 13 open and close, and a pair of wing portions 5a and 5b having an arc-shaped cross section that rotates around each of the shaft portions 2a and 2b.When the pair of clamping portions 13 are open, the pair of wing portions 5a and 5b extend beyond the outer shape of the pair of clamping portions 13 in cross section, and when the pair of clamping portions 3 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 3.Therefore, by simply operating the handle portion 5, the medical device 10 can be opened and closed more easily relative to the guidewire G, and the clamped guidewire G can be operated even more easily, and the entire medical device 10 can be configured to be even more compact.

[0139] Furthermore, according to the medical device 10 of this embodiment, the +Y·-Y ends of the handle portion 5 are provided with a distal clip portion 7a and a proximal clip portion 7b that urge the pair of clamping portions 13 in the closing direction, and the distal clip portion 7a and the proximal clip portion 7b are configured to support both ends of the pair of shaft portions 2, thereby maintaining normal operation of the handle portion 5 and making the entire medical device 10 even more compact.

[0140] Furthermore, according to the medical device 10 of this embodiment, the left lever portion 13a of the pair of clamping portions 13 has a lever rotation recess 13ar3 at the portion facing the right lever portion 13b, so that the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions 13 can be increased, and ultimately the size of the guide wire G to be clamped can be increased.

[0141] Furthermore, according to the medical device 10 of this embodiment, the pair of clamping portions 13 have a left clip recess 13ar1 and a right clip recess 13br1 on the contact surfaces with the distal clip portion 7a and the proximal clip portion 7b, and the distal clip portion 7a and the proximal clip portion 7b have a left clip convex portion 7ac1, a right clip convex portion 7ac2, a left clip convex portion 7bc1 and a right clip convex portion 7bc2 facing the left clip recess 13ar1 and the right clip recess 13br1, thereby improving the connection strength between the distal clip portion 7a and the proximal clip portion 7b and the pair of clamping portions 13, and enabling the clamping portions to be opened and closed reliably. (Note that the left clip convex portion 7ac1, the right clip convex portion 7ac2, the left clip convex portion 7bc1, and the right clip convex portion 7bc2 are not shown in FIGS. 13 to 15, but have the same shapes as the left clip convex portion 7ac1, the right clip convex portion 7ac2, the left clip convex portion 7bc1, and the right clip convex portion 7bc2 of the first embodiment.)

[0142] Furthermore, according to the medical device 10 of this embodiment, when the pair of clamping portions 13 are opened, a gap is formed throughout the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 13 open and close, so that not only the ends of the guide wire G but also the middle portion of the guide wire G can be securely clamped.

[0143] (Third embodiment) Next, a third embodiment of the present invention will be described. Note that the drawings used in this embodiment are also exaggerated to facilitate understanding, and the dimensions are different from the actual dimensions.

[0144] A third embodiment of the present invention will be described below, but parts common to the first embodiment will be given the same reference numerals and descriptions thereof will be omitted.

[0145] In particular, since this embodiment is similar to the first embodiment in the BB cross-sectional view and CC cross-sectional view of Figure 3, parts other than those shown in Figures 16 to 22 will be described using the same symbols as in Figures 6 and 7.

[0146] Unlike the medical device 1 of the first embodiment, the medical device 20 of this embodiment does not include a wing-receiving cavity portion for accommodating the wing portion.

[0147] Figure 16 is an oblique view of a medical device of the third embodiment, Figure 17 is an oblique view showing the medical device of the third embodiment with the wing portions spread, and Figure 18 is a view equivalent to the DD cross section of Figure 3 when the medical device of the third embodiment has the wing portions closed.

[0148] 19 is a cross-sectional view equivalent to the DD cross section of FIG. 3 in which the wing portions of the medical device of the third embodiment are slightly expanded, FIG. 20 is a cross-sectional view equivalent to the DD cross section of FIG. 3, FIG. 21 is a cross-sectional view equivalent to the DD cross section of FIG. 3 in which the wing portions of the medical device of the third embodiment are further expanded and the left and right lever portions are open, and FIG. 22 is a cross-sectional view equivalent to the DD cross section of FIG. 3 in which the left and right lever portions of the medical device of the third embodiment are clamping the guide wire.

[0149] As shown in Figures 16 to 22, the medical device 20 is composed of a pair of clamping portions 23 that can clamp a guide wire G, a handle portion 25 that opens and closes the pair of clamping portions 23 relative to the guide wire G, and a clip portion 27 (corresponding to the "biasing portion" of the present invention) that biases the pair of clamping portions 23 in the direction of closing.

[0150] The pair of clamping portions 23 open and close the guidewire G so as to be attachable and detachable in a direction perpendicular to the longitudinal direction of the guidewire G. As shown in Figs. 16 to 22, the pair of clamping portions 23 have a generally cylindrical shape so as to be easily gripped by an operator, and include a left lever portion 23a rotatable about a lever rotation convex portion 3bc3 (not shown in Figs. 16 to 22, but having the same shape as the lever rotation convex portion 3bc3 of the first embodiment) and formed over a predetermined length in the +Y and -Y directions, which are the longitudinal directions of the medical device 20, and a right lever portion 23b rotatable about the lever rotation convex portion 3bc3 and formed to have approximately the same length as the left lever portion 23a in the +Y and -Y directions.

[0151] The left lever portion 23a is provided with a left bearing portion 22ag extending in the +Y and -Y directions between the distal clip portion 27a and the proximal clip portion 27b described later, in order to insert the left shaft portion 22a described later as the center of rotation of the left wing portion 25a described later, and a left wire holding portion 28a with a high friction coefficient formed on the surface that holds a medical device such as a guide wire G.

[0152] In addition, the left lever portion 23a is provided with a left clip recess 23ar1, located toward the tip and base of the center in the +Y·-Y direction, for engaging with the clip portion 27, which will be described later; a rotating left locking portion 23ac1, located toward the tip and base of the center in the +Y·-Y direction, for abutting against the right lever portion 23b when the handle portion 25, which will be described later, is opened, thereby regulating the opening angle of the handle portion 25; and a lever rotation recess 3ar3, which is approximately cylindrical, located toward the tip and base of the center in the +Y·-Y direction and slides against the right lever portion 23b when the clamping portion 23 rotates (not shown in Figures 16 to 22, but has the same shape as the lever rotation protrusion 3ar3 of the first embodiment).

[0153] Furthermore, the left lever portion 23a is provided with a left lever receiving portion 23as for contacting the left wing portion 25a described later, and a left wing recess 23ar2 formed so that the left wing cylindrical portion 25at of the left wing portion 25a described later can rotate.

[0154] Similar to the left lever portion 23a, the right lever portion 23b is provided with a right bearing portion 22bg extending in the +Y--Y direction between the distal clip portion 27a and the proximal clip portion 27b described later, in order to insert the right shaft portion 22b described later as the center of rotation of the right wing portion 25b described later, and a right wire holding portion 28b with a high friction coefficient formed on the surface that holds a medical device such as a guide wire G.

[0155] In addition, the right lever portion 23b is provided with a right clip recess 23br1, located closer to the tip and base of the center in the +Y·-Y direction, for engaging with the clip portion 27, which will be described later; a right rotating locking portion 23bc1, located closer to the tip and base of the center in the +Y·-Y direction, for abutting against the left lever portion 23a when the handle portion 25, which will be described later, is opened, thereby regulating the opening angle of the handle portion 25; and a lever rotating protrusion 3bc3, which is approximately cylindrical, located closer to the tip and base of the center in the +Y·-Y direction and slides against the left lever portion 23a when the clamping portion 23 rotates (not shown in Figures 16 to 22, but has the same shape as the lever rotating protrusion 3bc3 of the first embodiment).

[0156] Furthermore, the right lever portion 23b is provided with a right lever receiving portion 23bs for abutting against the right wing portion 25b described later, and a right wing recess 23br2 formed so that the right wing cylindrical portion 25bt of the right wing portion 25b described later can rotate.

[0157] The material forming the left lever portion 23a and the right lever portion 23b that make up the pair of clamping portions 23 can be the same as the material used for the left lever portion 3a and the right lever portion 3b in the first embodiment, and in this embodiment, ABS resin is used.

[0158] The handle portion 25 opens and closes in the same way as the pair of clamping portions 23 open and close, and as shown in Figures 16 to 22, is positioned in the center of the medical device 20 in the +Y·-Y direction and comprises a left wing portion 25a (corresponding to the "wing portion" of the present invention) that is rotatable around the left shaft portion 22a described later, and a right wing portion 25b (corresponding to the "wing portion" of the present invention) that is formed to be approximately the same length as the left wing portion 25a in the +Y·-Y direction and that is rotatable around the right shaft portion 22b described later.

[0159] The left wing portion 25a has an arc-shaped cross section and is equipped with a left wing pressing portion 25as that rotates to abut against the left lever receiving portion 23as, and a left wing cylindrical portion 25at that can rotate around the left shaft portion 22a described later.

[0160] Like the left wing portion 25a, the right wing portion 25b has an arc-shaped cross section and is equipped with a right wing pressing portion 25bs that rotates to abut against the right lever receiving portion 23bs, and a right wing cylindrical portion 25bt that can rotate around the right shaft portion 22b described later.

[0161] The left wing portion 25a and the right wing portion 25b constituting the handle portion 25 can be made of the same material as the left wing portion 5a and the right wing portion 5b of the first embodiment, and in this embodiment, ABS resin is used.

[0162] The shaft portion 22 is provided to rotate the handle portion 25, and similar to the structure shown in Figure 5, is arranged between the distal clip portion 27a and the proximal clip portion 27b described later, penetrating the handle portion 25 and the clamping portion 23 in the +Y / -Y direction, thereby allowing the handle portion 25 to rotate in the +θ / -θ direction around the shaft portion 22, with the clamping portion 23 as a bearing.

[0163] Furthermore, in this embodiment, both ends of the shaft portion 22 in the +Y·-Y directions are supported so as to abut against the distal clip portion 27a and the proximal clip portion 27b, thereby restricting movement of the shaft portion 22 in the +Y·-Y directions, maintaining normal operation of the handle portion 25, and enabling the entire medical device 20 to be configured even more compactly.

[0164] As shown in Figures 18 to 22, the shaft portion 22 is provided on each of the left wing portion 25a and the right wing portion 25b. Specifically, the left shaft portion 22a is provided at the center of the left wing cylindrical portion 25at of the left wing portion 25a, and the right shaft portion 22b is provided at the center of the right wing cylindrical portion 25bt of the right wing portion 25b.

[0165] The material forming the left shaft portion 22a and the right shaft portion 22b that make up the shaft portion 22 can be the same as the material forming the left shaft portion 2a and the right shaft portion 2b of the first embodiment, and in this embodiment, stainless steel is used.

[0166] The clip portion 27 has a U-shape in cross section and is made of an elastic body with spring properties. It is attached so as to cover the pair of clamping portions 23 from above, and is configured to bias the pair of clamping portions 23 to close.

[0167] The clip portion 27 includes a distal clip portion 27a and a proximal clip portion 27b on the distal and proximal sides, respectively, of the central portion in the +Y and -Y directions.

[0168] In addition, the tip-side clip portion 27a is formed with a clip left convex portion 27ac1 and a clip right convex portion 27ac2 (not shown in Figures 16 to 22, but have the same shape as the clip left convex portion 7ac1 and the clip right convex portion 7ac2 of the first embodiment) for fitting into the clip left recess 23ar1 and the clip right recess 23br1, and the base-side clip portion 27b is formed with a clip left convex portion 27bc1 (not shown in Figures 16 to 22, but formed on the base-side clip portion 27b in the same way as the clip left convex portion 27ac1) and a clip right convex portion 27bc2 (not shown in Figures 16 to 22, but formed on the base-side clip portion 27b in the same way as the clip left convex portion 27ac2) for fitting into the clip left recess 23ar1 and the clip right recess 23br1.

[0169] In this embodiment, the left lever portion 23a and the right lever portion 23b are provided with a left clip recess 23ar1 (corresponding to the "second recess" of the present invention) and a right clip recess 23br1 (corresponding to the "second recess" of the present invention), the distal clip portion 27a is provided with a left clip protrusion 27ac1 (corresponding to the "third protrusion" of the present invention) and a right clip protrusion 27ac2 (corresponding to the "third protrusion" of the present invention) for fitting into the left clip recess 23ar1 and the right clip recess 23br1, and the proximal clip portion 27b is provided with a left clip protrusion 27bc1 (corresponding to the "third protrusion" of the present invention) and a right clip protrusion 27ac2 (corresponding to the "third protrusion" of the present invention) for fitting into the left clip recess 23ar1 and the right clip recess 23br1. However, it is also possible to provide a left clip convex portion (corresponding to the "second convex portion" of the present invention) and a right clip convex portion (corresponding to the "second convex portion" of the present invention) on the left lever portion 23a and the right lever portion 23b, to provide a left clip recess (corresponding to the "third recess" of the present invention) and a right clip recess (corresponding to the "third recess" of the present invention) for fitting into the left clip convex portion and the right clip convex portion on the distal clip portion 27a, and to provide a left clip recess (corresponding to the "third recess" of the present invention) and a right clip recess (corresponding to the "third recess" of the present invention) for fitting into the left clip convex portion and the right clip convex portion on the proximal clip portion 27b.

[0170] Further, distal clip portion 27a includes a left clip locking portion 7as1 for locking onto left lever portion 23a and a right clip locking portion 7as2 for locking onto right lever portion 23b, and proximal clip portion 27b includes a left clip locking portion 7bs1 for locking onto left lever portion 23a and a right clip locking portion 7bs2 for locking onto right lever portion 23b. (Note that, although left clip locking portion 7as1, right clip locking portion 7as2, left clip locking portion 7bs1, and right clip locking portion 7bs2 are not shown in FIGS. 16 to 22, they have the same configurations as left clip locking portion 7as1, right clip locking portion 7as2, left clip locking portion 7bs1, and right clip locking portion 7bs2 of the first embodiment.)

[0171] In addition, the tip-side clip portion 27a is configured to abut against and support the tip-side end of the shaft portion 22 to prevent the tip-side end of the shaft portion 22 from protruding, and the base-side clip portion 27b is also configured to abut against and support the base-side end of the shaft portion 22 to prevent the base-side end of the shaft portion 22 from protruding.

[0172] The material forming the distal clip portion 27a and the proximal clip portion 27b that make up the clip portion 27 can be the same as the material used for the distal clip portion 7a and the proximal clip portion 7b of the first embodiment, and in this embodiment, polyacetal (POM) is used.

[0173] Next, a case where an operator uses the medical device 20 described above will be described.

[0174] When an operator uses the medical device 20, first, the operator inserts the guide wire G from the base end of the catheter 100, and with the tip of the guide wire G protruding from the tip of the catheter 100, the operator spreads the left wing portion 25a and the right wing portion 25b of the medical device 20 in the +θ direction against the biasing force of the clip portion 27.

[0175] Then, the left wing portion 25a rotates around the left shaft portion 22a and comes into contact with the left lever receiving portion 23as, and the right wing portion 25b rotates around the right shaft portion 22b and comes into contact with the right lever receiving portion 23bs.

[0176] FIG. 18 shows the medical device 20 with the left wing portion 25a and the right wing portion 25b closed, FIG. 19 shows the left wing portion 25a and the right wing portion 25b slightly spread apart, and FIG. 20 shows the left wing portion 25a further spread apart to abut against the left lever receiving portion 23as, and the right wing portion 25b further spread apart to abut against the right lever receiving portion 23bs.

[0177] When the operator further spreads left wing portion 25a and left wing portion 25b in the +θ direction against the biasing force of clip portion 27, left wing pressing portion 25as presses down left lever receiving portion 23as, and right wing pressing portion 25bs presses down right lever receiving portion 23bs, causing left lever portion 23a and right lever portion 23b to open, and consequently left wire holding portion 28a and right wire holding portion 28b to open (see Figure 21).

[0178] In this embodiment, when the left lever portion 23a and the right lever portion 23b are opened and the pair of clamping portions 23 are released, the left wing portion 25a and the left wing portion 25b extend beyond the outer shape of the pair of clamping portions 23 in cross section, and when the pair of clamping portions 23 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 23.

[0179] In addition, in this embodiment, when the left lever portion 23a and the right lever portion 23b open, and accordingly the left wire holding portion 28a and the right wire holding portion 28b open, a gap is formed throughout the +Y·-Y directions that intersect with the +θ·-θ directions in which the pair of clamping portions 23 open and close, so that the guide wire G can be inserted at any location.

[0180] Then, the guide wire G is inserted into the open area, and then the left wing portion 25a and the right wing portion 25b are closed in the -θ direction in accordance with the biasing force of the clip portion 27, so that the guide wire G is clamped between the left wire holding portion 28a and the right wire holding portion 28b (see Figure 22).

[0181] The operator then clamps the guide wire G and, by grasping and manipulating the medical device 20, which has become approximately cylindrical in shape so as to form the outer shape of the medical device 20 together with the pair of clamping portions 23, can easily perform rotational and forward / backward operations on the guide wire G.

[0182] The medical device 20 of this embodiment is equipped with a pair of clamping portions 23 capable of clamping a guidewire G, and a handle portion 25 that opens and closes the pair of clamping portions 23 relative to the guidewire G. The handle portion 25 forms the outer shape together with the pair of clamping portions 23 when the pair of clamping portions 23 are closed to clamp the guidewire G. Therefore, by simply operating the handle portion 25, the medical device 20 can be easily opened and closed relative to the guidewire G, and the clamped guidewire G can be easily operated, allowing the entire medical device 20 to be configured compactly.

[0183] Furthermore, according to the medical device 20 of this embodiment, the handle portion 25 is arranged at each clamping portion and has a pair of shaft portions 22 extending in the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 23 open and close, and a pair of wing portions 25a and 25b having an arc-shaped cross section that rotates around each of the shaft portions 22a and 22b. When the pair of clamping portions 23 are open, the pair of wing portions 25a and 25b extend beyond the outer shape of the pair of clamping portions 23 in cross section, and when the pair of clamping portions 23 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 23. Therefore, by simply operating the handle portion 25, the medical device 20 can be opened and closed more easily relative to the guidewire G, and the clamped guidewire G can be operated even more easily, and the entire medical device 20 can be configured to be even more compact.

[0184] Furthermore, according to the medical device 20 of this embodiment, the +Y·-Y direction ends of the handle portion 25 are provided with a distal clip portion 27a and a proximal clip portion 27b that urge the pair of clamping portions 23 in the closing direction, and the distal clip portion 27a and the proximal clip portion 27b are configured to support both ends of the pair of shaft portions 22, thereby maintaining normal operation of the handle portion 25 and enabling the entire medical device 20 to be configured even more compactly.

[0185] Furthermore, according to the medical device 20 of this embodiment, the left lever portion 23a of the pair of clamping portions 23 has a lever rotation recess 3ar3 at the portion facing the right lever portion 23b, so that the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions 23 can be increased, and ultimately the size of the guide wire G to be clamped can be increased.

[0186] Furthermore, according to the medical device 20 of this embodiment, the pair of clamping portions 23 have a left clip recess 23ar1 and a right clip recess 23br1 on the contact surfaces with the distal clip portion 27a and the proximal clip portion 27b, and the distal clip portion 27a and the proximal clip portion 27b have a left clip convex portion 27ac1, a right clip convex portion 27ac2, a left clip convex portion 27bc1 and a right clip convex portion 27bc2 facing the left clip recess 23ar1 and the right clip recess 23br1, thereby improving the connection strength between the distal clip portion 27a and the proximal clip portion 27b and the pair of clamping portions 23, and enabling the clamping portions to be opened and closed reliably.

[0187] Furthermore, according to the medical device 20 of this embodiment, when the pair of clamping portions 23 are opened, a gap is formed throughout the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 23 open and close, so that not only the ends of the guide wire G but also the middle portion of the guide wire G can be securely clamped.

[0188] (Fourth embodiment) Next, a fourth embodiment of the present invention will be described. Note that the drawings used in this embodiment are also exaggerated to facilitate understanding, and the dimensions are different from the actual dimensions.

[0189] Hereinafter, a fourth embodiment of the present invention will be described, but parts common to the first embodiment will be assigned the same reference numerals and description thereof will be omitted. In particular, parts other than those shown in Figures 23 to 25 will be described using the same reference numerals as in Figures 6 to 8.

[0190] The medical device 30 of this embodiment differs from the medical device 1 of the first embodiment in that the upper ends of the clamping portions 33 are connected; specifically, the upper ends of the left lever portions 33a and right lever portions 33b of the clamping portions 33 are connected by connecting portion 36, and the left lever portion 33a and right lever portion 33b are configured to be rotatable around connecting portion 36.

[0191] Figure 23 is a cross-sectional view equivalent to the DD cross section of Figure 3 in which the wing portions of the medical device of the fourth embodiment are slightly spread, Figure 24 is a cross-sectional view equivalent to the DD cross section of Figure 3 in which the wing portions of the medical device of the fourth embodiment are further spread and the left and right lever portions are open, and Figure 25 is a cross-sectional view equivalent to the DD cross section of Figure 3 in which the left and right lever portions of the medical device of the fourth embodiment are clamping a guide wire.

[0192] As shown in Figures 23 to 25, the medical device 30 is composed of a pair of clamping portions 33 that can clamp a guide wire G, a handle portion 35 that opens and closes the pair of clamping portions 33 relative to the guide wire G, and a clip portion 37 (corresponding to the "biasing portion" of the present invention) that biases the pair of clamping portions 33 in the direction of closing.

[0193] The pair of clamping portions 33 open and close the guidewire G so as to be attachable and detachable in a direction perpendicular to the longitudinal direction of the guidewire G. As shown in Figures 23 to 25, the pair of clamping portions 33 have a generally cylindrical shape so as to be easily gripped by an operator, and include a left lever portion 33a that is rotatable about a connecting portion 36 and formed over a predetermined length in the +Y and -Y directions that are the longitudinal direction of the medical device 30, and a right lever portion 33b whose upper end is connected to the upper end of the left lever portion 33a via the connecting portion 36, rotatable about the connecting portion 36, and formed to have approximately the same length as the left lever portion 33a in the +Y and -Y directions.

[0194] The left lever portion 33a is provided with a left wing storage cavity portion 34ag (34) in the center in the +Y·-Y direction for storing the left wing portion 35a described later, a left bearing portion 32ag extending in the +Y·-Y direction between the tip-end clip portion 37a and the base-end clip portion 37b described later for inserting the left shaft portion 32a described later as the center of rotation of the left wing portion 35a described later, and a left wire holding portion 38a with a high friction coefficient formed on the surface for holding a medical device such as a guide wire G.

[0195] In addition, the left lever portion 33a has a left clip recess 33ar1 at the tip and base ends of the central portion in the +Y·-Y direction for engaging with the clip portion 37 described later, and a rotating left locking portion 33ac1 at the central portion in the +Y·-Y direction for abutting against the right lever portion 33b to regulate the opening angle of the handle portion 35 described later when opening the handle portion 35.

[0196] Furthermore, the left lever portion 33a includes a left lever receiving portion 3as for contacting with the left wing portion 35a (described later) and a left wing recess 3ar2 formed so that a left wing cylindrical portion 35at of the left wing portion 35a (described later) can rotate. (Note that the left lever receiving portion 3as and the left wing recess 3ar2 are not shown in Figures 23 to 25, but have the same configuration as the left lever receiving portion 3as and the left wing recess 3ar2 of the first embodiment.)

[0197] Like the left lever portion 33a, the right lever portion 33b is provided with a right wing storage cavity portion 34bg in the center in the +Y·-Y direction for storing the right wing portion 35b described later, a right bearing portion 32bg extending in the +Y·-Y direction between the tip-end clip portion 37a and the base-end clip portion 37b described later for inserting the right shaft portion 32b described later as the center of rotation of the left wing portion 35b described later, and a right wire holding portion 38b with a high friction coefficient formed on the surface for holding a medical device such as a guide wire G.

[0198] In addition, the right lever portion 33b has a right clip recess 33br1 at the tip and base ends of the center in the +Y·-Y direction for engaging with the clip portion 37 described later, and a rotating left locking portion 33bc1 at the center in the +Y·-Y direction for abutting against the left lever portion 33a to regulate the opening angle of the handle portion 35 described later when opening the handle portion 35.

[0199] Furthermore, the right lever portion 33b includes a right lever receiving portion 3bs for contacting the right wing portion 35b (described later) and a right wing recess 3br2 formed so that a right wing cylindrical portion 35bt (described later) of the right wing portion 35b can rotate. (Note that the right lever receiving portion 3bs and the right wing recess 3br2 are not shown in Figures 23 to 25, but have the same configuration as the right lever receiving portion 3bs and the right wing recess 3br2 of the first embodiment.)

[0200] The material forming the left lever portion 33a and the right lever portion 33b that make up the pair of clamping portions 33 can be the same as the material used for the left lever portion 3a and the right lever portion 3b in the first embodiment, and in this embodiment, ABS resin is used.

[0201] The handle portion 35 opens and closes in the same way as the pair of clamping portions 33 open and close, and as shown in Figures 23 to 25, is positioned in the center of the medical device 30 in the +Y·-Y direction and comprises a left wing portion 35a (corresponding to the "wing portion" of the present invention) that is rotatable around the left shaft portion 32a described later, and a right wing portion 35b (corresponding to the "wing portion" of the present invention) that is formed to be approximately the same length as the left wing portion 35a in the +Y·-Y direction and that is rotatable around the right shaft portion 32b described later.

[0202] The left wing portion 35a has an arc-shaped cross section and includes a left wing pressing portion 5as that rotates to contact the left lever receiving portion 3as, a left wing cylindrical portion 35at that is rotatable around the left shaft portion 32a (described later), and a plurality of left protrusions 39a that extend in the +Y and -Y directions on the outer surface to facilitate operation of the medical device 30 that clamps the guidewire G. (Note that the left wing pressing portion 5as is not shown in FIGS. 23 to 25, but has the same shape as the left wing pressing portion 5as of the first embodiment.)

[0203] The right wing portion 35b, like the left wing portion 35a, has an arc-shaped cross section and includes a right wing pressing portion 5bs that rotates to contact the right lever receiving portion 3bs, a right wing cylindrical portion 35bt that can rotate around the right shaft portion 32b (described later), and multiple right protrusions 39b that extend in the +Y and -Y directions on the outer surface to facilitate operation of the medical device 30 that clamps the guidewire G. (Note that the right wing pressing portion 5bs is not shown in FIGS. 23 to 25, but has the same shape as the right wing pressing portion 5bs of the first embodiment.)

[0204] The left wing portion 35a and the right wing portion 35b constituting the handle portion 35 can be made of the same material as the left wing portion 5a and the right wing portion 5b of the first embodiment, and in this embodiment, ABS resin is used.

[0205] The shaft portion 32 is provided to rotate the handle portion 35, and similar to the configuration in Figure 5, is arranged between the distal clip portion 37a and the proximal clip portion 37b described later, penetrating the handle portion 35 and the clamping portion 33 in the +Y·-Y direction, thereby allowing the handle portion 35 to rotate in the +θ·-θ direction around the shaft portion 32, with the clamping portion 33 as a bearing.

[0206] Furthermore, in this embodiment, both ends of the shaft portion 32 in the +Y·-Y directions are supported so as to abut against the distal clip portion 37a and the proximal clip portion 37b, thereby restricting movement of the shaft portion 32 in the +Y·-Y directions, maintaining normal operation of the handle portion 35, and enabling the entire medical device 30 to be configured even more compactly.

[0207] As shown in Figures 23 to 25, the shaft portion 32 is provided on each of the left wing portion 35a and the right wing portion 35b. Specifically, the left shaft portion 32a is provided at the center of the left wing cylindrical portion 35at of the left wing portion 35a, and the right shaft portion 32b is provided at the center of the right wing cylindrical portion 35bt of the right wing portion 35b.

[0208] The material forming the left shaft portion 32a and the right shaft portion 32b that make up the shaft portion 32 can be the same as the material forming the left shaft portion 2a and the right shaft portion 2b of the first embodiment, and in this embodiment, stainless steel is used.

[0209] The clip portion 37 has a U-shape in cross section and is made of an elastic body with spring properties. It is attached so as to cover the pair of clamping portions 33 from above, and is configured to bias the pair of clamping portions 33 to close.

[0210] The clip portion 37 has a tip side clip portion 37a and a base side clip portion 37b (not shown, but having the same shape as the tip side clip portion 37a) on the tip side and base side, respectively, of the central portion in the +Y / -Y direction.

[0211] The distal clip portion 37a is formed with a left clip protrusion 7ac1 and a right clip protrusion 7ac2 for fitting into the left clip recess 33ar1 and the right clip recess 33br1, and the proximal clip portion 37b is formed with a left clip protrusion 7bc1 and a right clip protrusion 7bc2 for fitting into the left clip recess 33ar1 and the right clip recess 33br1. (Note that the left clip protrusion 7ac1, the right clip protrusion 7ac2, the left clip protrusion 7bc1, and the right clip protrusion 7bc2 are not shown in FIGS. 23 to 25, but have the same shapes as the left clip protrusion 7ac1, the right clip protrusion 7ac2, the left clip protrusion 7bc1, and the right clip protrusion 7bc2 of the first embodiment.)

[0212] In this embodiment, the left lever portion 33a and the right lever portion 33b are provided with a left clip recess 33ar1 (corresponding to the "second recess" of the present invention) and a right clip recess 33br1 (corresponding to the "second recess" of the present invention), the distal clip portion 37a is provided with a left clip protrusion 7ac1 (corresponding to the "third protrusion" of the present invention) and a right clip protrusion 7ac2 (corresponding to the "third protrusion" of the present invention) for fitting into the left clip recess 33ar1 and the right clip recess 33br1, and the proximal clip portion 37b is provided with a left clip protrusion 7bc1 (corresponding to the "third protrusion" of the present invention) and a right clip protrusion 7b However, it is also possible to provide a left clip convex portion (corresponding to the "second convex portion" of the present invention) and a right clip convex portion (corresponding to the "second convex portion" of the present invention) on the left lever portion 33a and the right lever portion 33b, to provide a left clip recess (corresponding to the "third recess" of the present invention) and a right clip recess (corresponding to the "third recess" of the present invention) for fitting into the left clip convex portion and the right clip convex portion on the distal clip portion 37a, and to provide a left clip recess (corresponding to the "third recess" of the present invention) and a right clip recess (corresponding to the "third recess" of the present invention) for fitting into the left clip convex portion and the right clip convex portion on the proximal clip portion 37b.

[0213] Further, the distal clip portion 37a includes a left clip locking portion 7as1 for locking onto the left lever portion 33a and a right clip locking portion 7as2 for locking onto the right lever portion 33b, and the proximal clip portion 37b includes a left clip locking portion 7bs1 for locking onto the left lever portion 33a and a right clip locking portion 7bs2 for locking onto the right lever portion 33b. (Note that the left clip locking portion 7as1, the right clip locking portion 7as2, the left clip locking portion 7bs1, and the right clip locking portion 7bs2 are not shown in FIGS. 23 to 25, but have the same configurations as the left clip locking portion 7as1, the right clip locking portion 7as2, the left clip locking portion 7bs1, and the right clip locking portion 7bs2 of the first embodiment.)

[0214] In addition, the tip-side clip portion 37a is configured to abut against and support the tip-side end of the shaft portion 32 to prevent the tip-side end of the shaft portion 32 from protruding, and the base-side clip portion 37b is also configured to abut against and support the base-side end of the shaft portion 32 to prevent the base-side end of the shaft portion 32 from protruding.

[0215] The material forming the distal clip portion 37a and the proximal clip portion 37b that make up the clip portion 37 can be the same as the material used for the distal clip portion 7a and the proximal clip portion 7b of the first embodiment, and in this embodiment, polyacetal (POM) is used.

[0216] In this embodiment, the clip portion 37 is configured to include the distal clip portion 37a and the proximal clip portion 37b, but in this embodiment, the pair of clamping portions 33 have the upper ends of the left lever portion 33a and the right lever portion 33b connected by the connecting portion 36, so that it is possible to eliminate one of the distal clip portion 37a and the proximal clip portion 37b. This allows the entire medical device 30 to be configured more compactly.

[0217] Furthermore, if the upper ends of the left lever portion 33a and the right lever portion 33b are connected by connecting portion 36 and the lever portions themselves can apply a biasing force in the closing direction by connecting portion 36, it is possible to eliminate all clip portions, thereby making it possible to make the entire medical device 30 even more compact.

[0218] Furthermore, if one or both clip portions are eliminated, the left lever portion 33a and the right lever portion 33b themselves will abut and support both ends of the shaft portion 32 in the +Y and -Y directions, making it possible to make the entire medical device 30 even more compact.

[0219] Next, a case where an operator uses the medical device 30 described above will be described.

[0220] When an operator uses the medical device 30, first, the operator inserts the guide wire G from the base end of the catheter 100, and with the tip of the guide wire G protruding from the tip of the catheter 100, the operator spreads the left wing portion 35a and the right wing portion 35b of the medical device 30 in the +θ direction against the biasing force of the clip portion 37.

[0221] Then, the left wing portion 35a rotates around the left shaft portion 32a and comes into contact with the left lever receiving portion 3as, and the right wing portion 35b rotates around the right shaft portion 32b and comes into contact with the right lever receiving portion 3bs.

[0222] FIG. 23 shows the state in which the left wing portion 35a is spread and abuts against the left lever receiving portion 3as, and the right wing portion 35b is spread and abuts against the right lever receiving portion 3bs.

[0223] When the operator further spreads the left wing portions 35a and 35a in the +θ direction against the biasing force of the clip portion 37, the left wing pressing portion 5as presses down the left lever receiving portion 3as and the right wing pressing portion 5bs presses down the right lever receiving portion 3bs, causing the left lever portion 33a and the right lever portion 33b to open around the connecting portion 36, and consequently the left wire holding portion 38a and the right wire holding portion 38b to open (see Figure 24).

[0224] In this embodiment, when the left lever portion 33a and the right lever portion 33b are opened and the pair of clamping portions 33 are released, the left wing portion 35a and the right wing portion 35b extend beyond the outer shape of the pair of clamping portions 33 in cross section, and when the pair of clamping portions 33 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 33.

[0225] In addition, in this embodiment, when the left lever portion 33a and the right lever portion 33b are opened and the left wire holding portion 38a and the right wire holding portion 38b are opened accordingly, a gap is formed throughout the +Y·-Y directions that intersect with the +θ·-θ directions in which the pair of clamping portions 33 open and close, so that the guide wire G can be inserted at any location.

[0226] Then, the guide wire G is inserted into the open area, and then the left wing portion 35a and the right wing portion 35b are closed in the -θ direction in accordance with the biasing force of the clip portion 37, so that the guide wire G is clamped between the left wire holding portion 38a and the right wire holding portion 38b (see Figure 25).

[0227] The operator then clamps the guide wire G and, by grasping and manipulating the medical device 30, which has become approximately cylindrical so as to form the outer shape of the medical device 30 together with the pair of clamping portions 33, can easily perform rotational and forward / backward operations on the guide wire G.

[0228] The medical device 30 of this embodiment is equipped with a pair of clamping portions 33 that can clamp a guidewire G, and a handle portion 35 that opens and closes the pair of clamping portions 33 relative to the guidewire G. The handle portion 35 forms the outer shape together with the pair of clamping portions 33 when the pair of clamping portions 33 are closed to clamp the guidewire G. Therefore, by simply operating the handle portion 35, the medical device 30 can be easily opened and closed relative to the guidewire G, and the clamped guidewire G can be easily operated, allowing the entire medical device 30 to be configured compactly.

[0229] Furthermore, the medical device 30 of this embodiment is equipped with a pair of clamping portions 33 capable of clamping a guidewire G, and a handle portion 35 that opens and closes the pair of clamping portions 33 relative to the guidewire G. When the pair of clamping portions 33 are closed to clamp the guidewire G, the handle portion 35 is stored in the left wing storage space 34ag and the right wing storage space 34bg of the pair of clamping portions 33. Therefore, by simply operating the handle portion 35, the medical device 30 can be easily opened and closed relative to the guidewire G, and the clamped guidewire G can be easily operated, allowing the entire medical device 30 to be configured compactly.

[0230] Furthermore, according to the medical device 30 of this embodiment, when the handle portion 35 forms its outer shape together with the pair of clamping portions 33, it has multiple left convex portions 39a and right convex portions 39b formed on its outer periphery that extend in the +Y·-Y direction that intersects with the +θ·-θ direction in which the pair of clamping portions 33 open and close, making it even easier to operate the clamped guide wire G.

[0231] Furthermore, according to the medical device 30 of this embodiment, the handle portion 35 is arranged at each clamping portion and has a pair of shaft portions 32 extending in the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 33 open and close, and a pair of wing portions 35a and 35b having an arc-shaped cross section that rotates around each of the shaft portions 32a and 32b.When the pair of clamping portions 33 are open, the pair of wing portions 35a and 35b extend beyond the outer shape of the pair of clamping portions 33 in cross section, and when the pair of clamping portions 33 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 33.Therefore, by simply operating the handle portion 35, the medical device 30 can be opened and closed more easily relative to the guidewire G, and the clamped guidewire G can be operated even more easily, allowing the entire medical device 30 to be configured more compactly.

[0232] Furthermore, according to the medical device 30 of this embodiment, the +Y·-Y ends of the handle portion 35 are provided with a distal clip portion 37a and a proximal clip portion 37b that urge the pair of clamping portions 33 in the closing direction, and the distal clip portion 37a and the proximal clip portion 27b are configured to support both ends of the pair of shaft portions 22, thereby maintaining normal operation of the handle portion 35 and enabling the entire medical device 30 to be configured even more compactly.

[0233] Furthermore, according to the medical device 30 of this embodiment, the pair of clamping portions 33 have a left clip recess 33ar1 and a right clip recess 33br1 on the contact surfaces with the distal clip portion 37a and the proximal clip portion 37b, and the distal clip portion 37a and the proximal clip portion 37b have a left clip convex portion 7ac1, a right clip convex portion 7ac2, a left clip convex portion 7bc1 and a right clip convex portion 7bc2 facing the left clip recess 33ar1 and the right clip recess 33br1, thereby improving the connection strength between the distal clip portion 37a and the proximal clip portion 37b and the pair of clamping portions 33, and enabling the clamping portions to be opened and closed reliably.

[0234] Furthermore, according to the medical device 30 of this embodiment, the pair of clamping portions 33 are connected at the top by the connecting portion 36, so that the distal clip portion 37a and / or the proximal clip portion 37b can be eliminated, the operation of the handle portion 35 can be maintained normally, and the entire medical device 30 can be configured even more compactly.

[0235] Furthermore, according to the medical device 30 of this embodiment, when the pair of clamping portions 33 are opened, a gap is formed throughout the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 33 open and close, so that not only the end portion of the guide wire G but also the middle portion of the guide wire G can be securely clamped.

[0236] (Fifth embodiment) Next, a fifth embodiment of the present invention will be described. Note that the drawings used in this embodiment are also exaggerated to facilitate understanding, and the dimensions are different from the actual dimensions.

[0237] Hereinafter, a fifth embodiment of the present invention will be described, but parts common to the first embodiment will be denoted by the same reference numerals and description thereof will be omitted. In particular, parts other than those denoted by the reference numerals shown in Fig. 26 will be described by denoting by the same reference numerals as in Figs. 6 to 8.

[0238] The medical device 40 of this embodiment has a different number of clip portions than the medical device 1 of the first embodiment. That is, the medical device 1 of the first embodiment has two clip portions, a distal clip portion 7a and a proximal clip portion 7b, but the medical device 40 of this embodiment is composed of only one clip portion.

[0239] FIG. 26 is a view corresponding to FIG. 4 of the medical device according to the fifth embodiment.

[0240] As shown in Figure 26, the medical device 40 is composed of a pair of clamping portions 43 that can clamp a guide wire G, a handle portion 45 that opens and closes the pair of clamping portions 43 relative to the guide wire G, and a clip portion 47 (corresponding to the "biasing portion" of the present invention) that biases the pair of clamping portions 43 in the direction of closing.

[0241] The pair of clamping portions 43, like the pair of clamping portions 3 of the first embodiment, have an overall approximately cylindrical shape so that they are easy for the operator to grip, and are configured to be able to clamp medical instruments such as a guide wire G.They are equipped with a left lever portion 43a that is rotatable around a lever rotation protrusion 3bc3 described later and is formed over a predetermined length in the +Y / -Y direction, which is the longitudinal direction of the medical device 40, and a right lever portion 43b that is rotatable around the lever rotation protrusion 3bc3 described later and is formed to be approximately the same length as the left lever portion 43a in the +Y / -Y direction.

[0242] The left lever portion 43a is provided with a left wing storage cavity portion 4ag in the center in the +Y·-Y direction for storing the left wing portion 45a described later, a left bearing portion 42ag extending in the +Y·-Y direction for inserting the left shaft portion 42a described later as the center of rotation of the left wing portion 45a described later, and a left wire holding portion 8a with a high friction coefficient formed on the surface for holding a medical device such as a guide wire G.

[0243] The left lever portion 43a also has, at its center in the +Y and -Y directions, a left clip recess 3ar1 for fitting with a clip portion 47 (described later), left rotation locking portions 3ac1 at four locations: at the distal and proximal ends of clip portion 47 and at the distal and proximal ends of left wing portion 45a; and a substantially cylindrical lever rotation recess 3ar3 located distal and proximal of the +Y and -Y direction from the central portion, which slides relative to the right lever portion 43b when clamping portion 43 rotates. (Note that the left clip recess 3ar1, left rotation locking portion 3ac1, and lever rotation recess 3ar3 are not shown in FIG. 26 but have the same shapes as the left clip recess 3ar1, left rotation locking portion 3ac1, and lever rotation recess 3ar3 of the first embodiment.)

[0244] Furthermore, the left lever portion 43a includes a left lever receiving portion 3as for contacting with the left wing portion 45a (described later), and a left wing recess 3ar2 formed so that a left wing cylindrical portion 5at (described later) of the left wing portion 45a can rotate. (Note that the lever receiving portion 3as, the left wing cylindrical portion 5at, and the left wing recess 3ar2 are not shown in FIG. 26, but have the same configurations as the left lever receiving portion 3as, the left wing cylindrical portion 5at, and the left wing recess 3ar2 of the first embodiment.)

[0245] Like the left lever portion 43a, the right lever portion 43b includes a right wing storage cavity 4bg in the center in the +Y and -Y directions for storing a right wing portion 45b (described later), a right bearing portion 42bg extending in the +Y and -Y directions for inserting a right shaft portion 42b (described later) serving as the rotation center of the right wing portion 45b (described later), and a right wire holding portion 8b with a high friction coefficient formed on the surface for holding a medical device such as a guidewire G. (The right wing storage cavity 4bg and right wire holding portion 8b are not shown in FIG. 26, but have the same configuration as the right wing storage cavity 4bg and right wire holding portion 8b of the first embodiment.)

[0246] The right lever portion 43b also includes, at its center in the +Y and -Y directions, a right clip recess 3br1 for fitting with a clip portion 47 (described later), right rotation locking portions 3bc1 at four locations: the distal and proximal ends of the clip portion 47 and the distal and proximal ends of the right wing portion 45b; right rotation locking portions 3bc1 that abut against the left lever portion 43a to regulate the opening angle of the handle portion 45 (described later) when the handle portion 45 is opened; and a substantially cylindrical lever rotation protrusion 3bc3 located distal and proximal of the +Y and -Y direction from the central portion, that slides relative to the right lever portion 43b when the clamping portion 43 rotates. (Note that the right clip recess 3br1, right rotation locking portion 3bc1, and lever rotation protrusion 3br3 are not shown in FIG. 26 but have the same shapes as the right clip recess 3br1, right rotation locking portion 3bc1, and lever rotation protrusion 3br3 of the first embodiment.)

[0247] Furthermore, the right lever portion 43b includes a right lever receiving portion 3bs for contacting with the right wing portion 45b (described later) and a right wing recess 3br2 formed so that a right wing cylindrical portion 5bt (described later) of the right wing portion 45b can rotate. (Note that the right lever receiving portion 3bs, the right wing cylindrical portion 5bt, and the right wing recess 3br2 are not shown in FIG. 26, but have the same configurations as the right lever receiving portion 3bs, the right wing cylindrical portion 5bt, and the right wing recess 3br2 of the first embodiment.)

[0248] The material forming the left lever portion 43a and the right lever portion 43b that make up the pair of clamping portions 43 can be the same as the material forming the left lever portion 3a and the right lever portion 3b in the first embodiment, and in this embodiment, ABS resin is used.

[0249] The handle portion 45 opens and closes in the same way as the pair of clamping portions 43 open and close relative to the guide wire G, and is arranged in the center of the medical device 40 in the +Y·-Y direction, and comprises a left wing portion 45a (corresponding to the "wing portion" of the present invention) that is rotatable around the left shaft portion 42a described later, and a right wing portion 45b (corresponding to the "wing portion" of the present invention) that is formed to be approximately the same length as the left wing portion 45a in the +Y·-Y direction and that is rotatable around the right shaft portion 42b described later.

[0250] The left wing portion 45a has an arc-shaped cross section and includes a left wing pressing portion 5as that rotates to abut against the left lever receiving portion 43as, a left wing cylindrical portion 5at that is rotatable around the left shaft portion 42a (described later), and a plurality of left protrusions 49a that extend in the +Y and -Y directions on the outer surface to facilitate operation of the medical device 40 that clamps the guidewire G. (Note that the left wing pressing portion 5as and the left wing cylindrical portion 5at are not shown in FIG. 26, but have the same configuration as the left wing pressing portion 5as and the left wing cylindrical portion 5at of the first embodiment.)

[0251] The right wing portion 45b, like the left wing portion 45a, has an arc-shaped cross section and includes a right wing pressing portion 5bs that rotates to contact the right lever receiving portion 43bs, a right wing cylindrical portion 5bt that can rotate around the right shaft portion 42b (described later), and a plurality of right protrusions 49b that extend in the +Y and -Y directions on the outer surface to facilitate operation of the medical device 40 that clamps the guidewire G. (Note that the right wing pressing portion 5bs and the right wing cylindrical portion 5bt are not shown in FIG. 26, but have the same shape as the right wing pressing portion 5bs and the right wing cylindrical portion 5bt of the first embodiment.)

[0252] The left wing portion 45a and the right wing portion 45b constituting the handle portion 45 can be made of the same material as the left wing portion 5a and the right wing portion 5b of the first embodiment, and in this embodiment, ABS resin is used.

[0253] The shaft portion 42 is provided to rotate the handle portion 45, and as shown in Figure 26, is arranged to penetrate the handle portion 45, the clamping portion 43, and the clip portion 47 described later in the +Y / -Y direction, thereby allowing the handle portion 45 to rotate in the +θ / -θ direction around the shaft portion 42, with the clamping portion 43 and the clip portion 47 described later as bearings.

[0254] In addition, the shaft portion 42 is provided on each of the left wing portion 45a and the right wing portion 45b. Specifically, the left shaft portion 42a is provided at the center of the left wing cylindrical portion 45at of the left wing portion 45a, and the right shaft portion 42b is provided at the center of the right wing cylindrical portion 45bt of the right wing portion 45b.

[0255] Furthermore, a tip-side sealing portion 46a1 and a base-side sealing portion 46a2 are arranged at both ends of the left shaft portion 42a in the +Y·-Y direction, and a tip-side sealing portion 46b1 and a base-side sealing portion 46b2 are arranged at both ends of the right shaft portion 42b in the +Y·-Y direction, thereby restricting movement of the shaft portion 42 in the +Y·-Y direction and maintaining normal operation of the handle portion 45.

[0256] The material forming the left shaft portion 42a and the right shaft portion 42b that make up the shaft portion 42 can be the same as the material forming the left shaft portion 2a and the right shaft portion 2b of the first embodiment, and in this embodiment, stainless steel is used.

[0257] The clip portion 47 has a U-shape in cross section and is made of an elastic body with spring properties. It is attached so as to cover the pair of clamping portions 43 from above, and is configured to bias the pair of clamping portions 43 to close.

[0258] The clip portion 47 is also formed with a left clip protrusion 7ac1 and a right clip protrusion 7ac2 for fitting into the left clip recess 3ar1 and the right clip recess 3br1. (Note that the left clip protrusion 7ac1 and the right clip protrusion 7ac2 are not shown in FIG. 26, but have the same shapes as the left clip protrusion 7ac1 and the right clip protrusion 7ac2 of the first embodiment.)

[0259] In this embodiment, the left lever portion 43a and the right lever portion 43b are provided with the left clip recess 3ar1 (corresponding to the "second recess" of the present invention) and the right clip recess 3br1 (corresponding to the "second recess" of the present invention), and the clip portion 47 is provided with the left clip convex portion 7ac1 (corresponding to the "third convex portion" of the present invention) and the right clip convex portion 7ac2 (corresponding to the "third convex portion" of the present invention) for fitting into the left clip recess 3ar1 and the right clip recess 3br1. However, the left lever portion 43a and the right lever portion 43b may be provided with the left clip convex portion (corresponding to the "second convex portion" of the present invention) and the right clip convex portion (corresponding to the "second convex portion" of the present invention), and the clip portion 47 may be provided with the left clip concave portion (corresponding to the "third recess" of the present invention) and the right clip concave portion (corresponding to the "third recess" of the present invention) for fitting into the left clip convex portion and the right clip convex portion.

[0260] The clip portion 47 also includes a clip left locking portion 7as1 for locking onto the left lever portion 43a and a clip right locking portion 7as2 for locking onto the right lever portion 43b. (Note that the clip left locking portion 7as1 and the clip right locking portion 7as2 are not shown in FIG. 26, but have the same configuration as the clip left locking portion 7as1 and the clip right locking portion 7as2 of the first embodiment.)

[0261] The clip portion 47 can be made of the same material as the distal clip portion 7a and the proximal clip portion 7b of the first embodiment, and in this embodiment, polyacetal (POM) is used.

[0262] Next, a case where an operator uses the medical device 40 described above will be described.

[0263] When an operator uses the medical device 40, first, the operator inserts the guide wire G from the base end of the catheter 100, and with the tip of the guide wire G protruding from the tip of the catheter 100, the operator spreads the left wing portion 45a and the right wing portion 45b of the medical device 1 in the +θ direction against the biasing force of the clip portion 47.

[0264] Then, the left wing portion 45a rotates around the left shaft portion 42a and comes into contact with the left lever receiving portion 3as, and the right wing portion 45b rotates around the right shaft portion 42b and comes into contact with the right lever receiving portion 3bs.

[0265] When the operator further spreads the left wing portions 45a and 45b in the +θ direction against the biasing force of the clip portion 47, the left wing pressing portion 5as presses down the left lever receiving portion 3as, and the right wing pressing portion 5bs presses down the right lever receiving portion 3bs, causing the left lever portion 43a and the right lever portion 43b to open, and accordingly the left wire holding portion 8a and the right wire holding portion 8b to open. (Note that although the left wire holding portion 8a and the right wire holding portion 8b are not shown in FIG. 26, they have the same configuration as the left wire holding portion 8a and the right wire holding portion 8b of the first embodiment.)

[0266] In this embodiment, when the left lever portion 43a and the right lever portion 43b are opened and the pair of clamping portions 43 are released, the left wing portion 45a and the right wing portion 45b expand beyond the outer shape of the pair of clamping portions 43 in cross section, and when the pair of clamping portions 43 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 43.

[0267] In addition, in this embodiment, when the left lever portion 43a and the right lever portion 43b are opened and, accordingly, the left wire holding portion 8a and the right wire holding portion 8b are opened, a gap is formed throughout the +Y·-Y directions that intersect with the +θ·-θ directions in which the pair of clamping portions 43 open and close, so that the guide wire G can be inserted at any location.

[0268] Then, the guide wire G is inserted into the open area, and then the left wing portion 45a and the right wing portion 45b are closed in the -θ direction in accordance with the biasing force of the clip portion 47, so that the guide wire G is clamped between the left wire holding portion 8a and the right wire holding portion 8b.

[0269] The operator then clamps the guide wire G and, by grasping and manipulating the medical device 40, which has become approximately cylindrical in shape so as to form the outer shape of the medical device 40 together with the pair of clamping portions 43, can easily perform rotational and forward / backward operations on the guide wire G.

[0270] The medical device 40 of this embodiment is equipped with a pair of clamping portions 43 that can clamp a guidewire G, and a handle portion 45 that opens and closes the pair of clamping portions 43 relative to the guidewire G. The handle portion 45 forms the outer shape together with the pair of clamping portions 43 when the pair of clamping portions 43 are closed to clamp the guidewire G. Therefore, by simply operating the handle portion 45, the medical device 40 can be easily opened and closed relative to the guidewire G, and the clamped guidewire G can be easily operated, allowing the entire medical device 40 to be configured compactly.

[0271] Furthermore, the medical device 40 of this embodiment is equipped with a pair of clamping portions 43 capable of clamping the guidewire G, and a handle portion 45 that opens and closes the pair of clamping portions 43 relative to the guidewire G. When the pair of clamping portions 43 are closed to clamp the guidewire G, the handle portion 45 is stored in the left wing storage space 4ag and the right wing storage space 4bg of the pair of clamping portions 43. Therefore, by simply operating the handle portion 45, the medical device 40 can be easily opened and closed relative to the guidewire G, and the clamped guidewire G can be easily operated, allowing the entire medical device 40 to be configured compactly.

[0272] Furthermore, according to the medical device 40 of this embodiment, when the handle portion 45 forms its outer shape together with the pair of clamping portions 43, it has multiple left convex portions 49a and right convex portions 49b formed on its outer periphery that extend in the +Y·-Y direction that intersects with the +θ·-θ direction in which the pair of clamping portions 43 open and close, making it even easier to operate the clamped guide wire G.

[0273] Furthermore, according to the medical device 40 of this embodiment, the handle portion 45 is arranged at each clamping portion and has a pair of shaft portions 42 extending in the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 43 open and close, and a pair of wing portions 45a and 45b having an arc-shaped cross section that rotates around each of the shaft portions 42a and 42b.When the pair of clamping portions 43 are open, the pair of wing portions 45a and 45b extend beyond the outer shape of the pair of clamping portions 43 in cross section, and when the pair of clamping portions 43 are closed, they assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions 43.Therefore, by simply operating the handle portion 45, the medical device 40 can be opened and closed more easily relative to the guidewire G, and the clamped guidewire G can be operated even more easily, allowing the entire medical device 40 to be configured more compactly.

[0274] Furthermore, according to the medical device 40 of this embodiment, the left lever portion 43a of the pair of clamping portions 43 has a lever rotation recess 3ar3 at the portion facing the right lever portion 43b, so that the opening angle of the clamping portions can be increased, the opening width of the pair of clamping portions 43 can be increased, and ultimately the size of the guide wire G to be clamped can be increased.

[0275] Furthermore, according to the medical device 40 of this embodiment, the pair of clamping portions 43 have a left clip recess 3ar1 and a right clip recess 3br1 on the contact surface with the clip portion 47, and the clip portion 47 has a left clip convex portion 7ac1 and a right clip convex portion 7ac2 facing the left clip recess 3ar1 and the right clip recess 3br1, thereby improving the connection strength between the clip portion 47 and the pair of clamping portions 43 and ensuring that the clamping portions can be opened and closed.

[0276] Furthermore, according to the medical device 40 of this embodiment, when the pair of clamping portions 43 are opened, a gap is formed throughout the +Y·-Y direction, which intersects with the +θ·-θ direction in which the pair of clamping portions 43 open and close, so that not only the end portion of the guide wire G but also the middle portion of the guide wire G can be securely clamped.

[0277] (Sixth embodiment) Next, a sixth embodiment of the present invention will be described. Note that the drawings used in this embodiment are also exaggerated to facilitate understanding, and the dimensions are different from the actual dimensions.

[0278] Hereinafter, a sixth embodiment of the present invention will be described, but parts common to the first embodiment will be denoted by the same reference numerals and description thereof will be omitted. In particular, parts other than those denoted by the reference numerals shown in Fig. 27 will be described by denoting by the same reference numerals as in Figs. 6 to 8.

[0279] The medical device 60 of this embodiment has a different handle configuration than the medical device 1 of the first embodiment. That is, the medical device 1 of the first embodiment had a plurality of left convex portions 9a and right convex portions 9b extending in the +Y and -Y directions on the outer surface of the handle portion 55, but the medical device 50 of this embodiment has a silicone rubber or file-like film with a high friction coefficient attached to the outer surface of the handle portion 55.

[0280] FIG. 27 is a perspective view showing a state in which the wing portions of the medical device according to the sixth embodiment are spread.

[0281] As shown in Figure 27, the medical device 60 is composed of a pair of clamping portions 3 that can clamp a guide wire G, a handle portion 55 that opens and closes the pair of clamping portions 3 relative to the guide wire G, and a clip portion 7 (corresponding to the "biasing portion" of the present invention) that biases the pair of clamping portions 3 in the direction of closing.

[0282] Handle portion 55 opens and closes in the same manner as the pair of clamping portions 3 opens and closes relative to guidewire G, and as shown in Fig. 27, is disposed in the center of medical device 50 in the +Y and -Y directions and includes left wing portion 55a (corresponding to the "wing portion" of the present invention) that is rotatable around left shaft portion 2a, and right wing portion 55b (corresponding to the "wing portion" of the present invention) that is formed to be approximately the same length as left wing portion 55a in the +Y and -Y directions and that is rotatable around right shaft portion 2b. (Note that left shaft portion 2a and right shaft portion 2b are not shown in Fig. 27 but have the same configuration as left shaft portion 2a and right shaft portion 2b of the first embodiment.)

[0283] The left wing portion 55a has an arc-shaped cross section and includes a left wing pressing portion 5as that rotates to abut against the left lever receiving portion 3as, a left wing cylindrical portion 5at that is rotatable around the left shaft portion 2a, and a silicone rubber or file-like film 56a attached to the outer surface to facilitate operation of the medical device 50 that clamps the guidewire G. (Note that the left wing pressing portion 5as and the left wing cylindrical portion 5at are not shown in FIG. 27, but have the same configuration as the left wing pressing portion 5as and the left wing cylindrical portion 5at of the first embodiment.)

[0284] The right wing portion 55b, like the left wing portion 55a, has an arcuate cross-sectional shape and includes a right wing pressing portion 5bs that rotates to contact the right lever receiving portion 3bs, a right wing cylindrical portion 5bt that can rotate around the right shaft portion 2b, and a silicone rubber or file-like film 56b attached to the outer surface to facilitate operation of the medical device 50 that clamps the guidewire G. (The right wing pressing portion 5bs and the right wing cylindrical portion 5bt are not shown in FIG. 27, but have the same shape as the right wing pressing portion 5bs and the right wing cylindrical portion 5bt of the first embodiment.)

[0285] The material forming the left wing portion 55a and the right wing portion 55b that make up the handle portion 55 can be the same as the material forming the left wing portion 5a and the right wing portion 5b of the first embodiment, and in this embodiment, ABS resin is used.

[0286] In this embodiment, the handle portion 55 has a silicone rubber or file-like film attached to its outer surface to increase the frictional force with the operator's fingers and make the medical device 50 easier to operate. However, the outer surface of the handle portion 55 may have multiple protrusions formed in a lattice pattern, multiple grooves formed in a lattice pattern, multiple through holes or grooves extending in the +Y and -Y directions, or the cross-sectional shape of the handle portion 55 itself may be curved into a polygonal shape.

[0287] According to the medical device 60 of this embodiment, since silicone rubber or a file-like film is attached to the outer surface of the handle portion 55, the clamped guide wire G can be easily manipulated.

[0288] The above describes various embodiments of the medical device of the present invention, but the present invention is not limited to the above embodiments and can be implemented with various modifications within the scope of the gist of the present invention.

[0289] For example, the provision of a recess 18 in the lever portion, as in the medical device 10 of the second embodiment, can also be applied to the medical device 20 of the third embodiment, the medical device 30 of the fourth embodiment, the medical device 40 of the fifth embodiment, and the medical device 50 of the sixth embodiment. When the recess 18 is provided in the lever portion, medical instruments such as guidewires can be securely clamped in each medical device, and the clamped medical instruments can be operated even more easily.

[0290] Furthermore, the fact that the upper ends of the clamping portions are connected by a connecting portion, as in the medical device 30 of the fourth embodiment, is also applicable to the medical device 1 of the first embodiment, the medical device 10 of the second embodiment, the medical device 20 of the third embodiment, the medical device 40 of the fifth embodiment, and the medical device 50 of the sixth embodiment, and when the upper ends of the clamping portions are connected by a connecting portion, one or all of the clip portions can be eliminated, and by reducing the number of parts, the entire medical device can be made even more compact.

[0291] Furthermore, the fact that the medical device is constructed with only one clip portion, as in the medical device 40 of the fifth embodiment, is also applicable to the medical device 1 of the first embodiment, the medical device 10 of the second embodiment, the medical device 20 of the third embodiment, the medical device 30 of the fourth embodiment, and the medical device 50 of the sixth embodiment, and when the medical device is constructed with only one clip portion, the number of parts can be reduced, thereby making the entire medical device even more compact.

[0292] In addition, in order to increase the frictional force with the operator's fingers and make the medical device easier to operate, the following can be applied to all of the medical devices in the above-mentioned embodiments: forming multiple convex portions extending in the +Y and -Y directions on the outer surface of the handle; attaching a silicone rubber or file-like film with a high friction coefficient to the outer surface of the handle; forming multiple protrusions in a lattice pattern on the outer surface of the handle; forming multiple grooves in a lattice pattern; forming multiple through holes or grooves extending in the +Y and -Y directions; and curving the cross-sectional shape of the handle itself into a polygonal shape.

[0293] Furthermore, in the above-described embodiments, for convenience of explanation, the second direction has been described as the +Y·-Y direction, the third direction as the +Y·-Y direction, and the fourth direction as the +Y·-Y direction; however, the second, third, and fourth directions may be any directions that intersect with the first direction (+θ·-θ direction) as long as the function of the medical device in the above-described embodiments is not impaired. [Explanation of symbols]

[0294] 1, 10, 20, 30, 40, 50... Medical Devices 2a,22a,32a,42a...Left shaft part 2ag, 22ag, 32ag, 42ag... Left bearing part 2b,22b,32b,42b...Right shaft part 2bg, 22bg, 32bg, 42bg Right bearing 3,23,33,43...gripping part 3a, 23a, 33a, 43a... Left lever 3ac1···Rotating left locking part 3ar1···Left recess for clip (second recess) 3ar2, 13ar2, 23ar2... Left recess for wing 3ar3···Lever rotation recess (notch) 3as···Left lever receiving part 3b,23b,33b,43b...Right lever part 3bc1···Right rotation locking part 3bc3···Lever rotation convex part 3br1···Right recess for clip (second recess) 3br2, 23br2, 33br2, 43br2... Right recess for wing 3bs Right lever holder 4ag... Left wing storage space 4bg Right wing storage space 5, 25, 35, 45, 55 Handle 5a, 25a, 35a, 45a, 55a... Left wing 5as, 25as... Left wing pressure part 5at, 25at... Left wing cylindrical section 5b, 25b, 35b, 45b, 55b... Right wing 5bs, 25bs... Right wing pressure part 5bt, 25bt... Right wing cylindrical section 7, 27, 37, 47 Clip part (energizing part) 7a, 27a, 37a... Tip side clip part (biasing part) 7ac1···Left protrusion of clip (third protrusion) 7ac2···Right convex part of clip (third convex part) 7b, 27b, 37b... Base end clip portion (biasing portion) 8a, 28a, 38a... Left wire holder 8b, 28b, 38b Right wire holder 9a, 39a, 49a... Left convex portion (first convex portion) 9b, 39b, 49b... Right convex part (first convex part) 18 Recess (first recess) 36...Connection part 46a1...Left tip side sealing part 46a2...Left proximal end sealing part 46b1...Right tip side sealing part 46b2...Right proximal end sealing part 56a Silicone rubber or sandpaper film 56b Silicone rubber or sandpaper film 100 catheters 102 Catheter body 104 Tip 106 Connector G···Guidewire

Claims

1. a pair of clamping portions capable of clamping a medical instrument; a handle portion that opens and closes so that the pair of clamping portions open and close relative to the medical instrument; Equipped with A medical device characterized in that the handle portion forms an outer shape together with the pair of clamping portions when the pair of clamping portions close to clamp the medical instrument.

2. The medical device according to claim 1 , wherein at least one of the pair of clamping portions includes a first recess for clamping the medical instrument.

3. The medical device according to claim 1, characterized in that, when the handle portion forms an outer shape together with the pair of clamping portions, it has a plurality of first convex portions formed on its outer periphery extending in a second direction intersecting the first direction in which the pair of clamping portions open and close.

4. The medical device according to claim 2, characterized in that, when the handle portion forms an outer shape together with the pair of clamping portions, it has a plurality of first convex portions formed on its outer periphery extending in a second direction intersecting the first direction in which the pair of clamping portions open and close.

5. the handle portion is disposed on each clamping portion and has a pair of shafts extending in a third direction intersecting a first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each shaft; The medical device according to claim 1, characterized in that, when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in a cross-sectional view, and when the pair of clamping portions are closed, the pair of wing portions assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.

6. the handle portion is disposed on each clamping portion and has a pair of shafts extending in a third direction intersecting a first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each shaft; The medical device according to claim 2, characterized in that when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in a cross-sectional view, and when the pair of clamping portions are closed, the pair of wing portions assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.

7. the handle portion is disposed on each clamping portion and has a pair of shafts extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each shaft; The medical device according to claim 3, characterized in that when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in a cross-sectional view, and when the pair of clamping portions are closed, the pair of wing portions assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.

8. the handle portion is disposed on each clamping portion and has a pair of shafts extending in a third direction intersecting the first direction in which the pair of clamping portions open and close, and a pair of wing portions having an arc shape in cross section that rotates around each shaft; The medical device according to claim 4, characterized in that when the pair of clamping portions are open, the pair of wing portions extend beyond the outer shape of the pair of clamping portions in a cross-sectional view, and when the pair of clamping portions are closed, the pair of wing portions assume an approximately cylindrical shape and form the outer shape together with the pair of clamping portions.

9. The medical device according to claim 5, characterized in that the third end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in a closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.

10. The medical device according to claim 6, characterized in that the third end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in a closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.

11. The medical device according to claim 7, characterized in that the third end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in a closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.

12. The medical device according to claim 8, characterized in that the third end of the handle portion is provided with at least one biasing portion that biases the pair of clamping portions in a closing direction, and the at least one biasing portion is configured to support at least one end of the pair of shafts.

13. 6. The medical device according to claim 5, wherein at least one of the pair of clamping portions has a notch in a portion facing the other clamping portion.

14. 7. The medical device according to claim 6, wherein at least one of the pair of clamping portions has a notch in a portion facing the other clamping portion.

15. 8. The medical device according to claim 7, wherein at least one of the pair of clamping portions has a notch in a portion facing the other clamping portion.

16. 9. The medical device according to claim 8, wherein at least one of the pair of clamping portions has a notch in a portion facing the other clamping portion.

17. 10. The medical device according to claim 9, wherein at least one of the pair of clamping portions has a notch in a portion facing the other clamping portion.

18. 11. The medical device according to claim 10, wherein at least one of the pair of clamping portions has a notch in a portion facing the other clamping portion.

19. 12. The medical device according to claim 11, wherein at least one of the pair of clamping portions has a notch in a portion facing the other clamping portion.

20. 13. The medical device according to claim 12, wherein at least one of the pair of clamping portions has a notch in a portion facing the other clamping portion.

21. The medical device according to claim 9, characterized in that the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with the at least one biasing portion, and the at least one biasing portion has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion.

22. The medical device according to claim 10, characterized in that the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with the at least one biasing portion, and the at least one biasing portion has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion.

23. The medical device according to claim 11, characterized in that the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with the at least one biasing portion, and the at least one biasing portion has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion.

24. The medical device according to claim 12, characterized in that the pair of clamping portions have a second convex portion or a second concave portion on the abutment surface with the at least one biasing portion, and the at least one biasing portion has a third concave portion or a third convex portion opposite the second convex portion or the second concave portion.

25. A medical device as described in any one of claims 1 to 24, characterized in that when the pair of clamping portions are opened, a gap is formed throughout a fourth direction that intersects with the first direction in which the pair of clamping portions open and close.

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