clamping element

Abstract

A clamp (10) includes a fixed portion (12) that places a medical tube (80) on an upper portion, a movable portion (14) that opposes the fixed portion (12) above the fixed portion (12), and a blocking portion (20) that presses to block the medical tube (80) when the movable portion (14) is pressed toward the fixed portion (12). The blocking portion (20) has a pressing portion (40) that protrudes from the movable portion (14) toward the fixed portion (12) to press the medical tube (80), a pair of side walls (24) that protrude from both side portions of the fixed portion (12) in a wall shape to prevent lateral displacement of the medical tube (80), and a guide configuration that introduces the pressing portion (40) between the side walls (24).

Description

Technical Field

[0001] This invention relates to clamping devices for sealing flexible tubes. Background Technology

[0002] As a flow path connecting blood bags and other components of a blood collection kit, or a bag and other components of an infusion kit, a flexible medical tube is used, and clamps for sealing the flow path are installed on these medical tubes.

[0003] The clamping element includes: an opening for inserting a medical tube; a pressing part for compressing and sealing the inserted medical tube; a movable part for inputting an operating force to the pressing part; and a locking mechanism for holding the movable part in the pressed state. In its initial state, the clamping element opens the pressing part using the elastic force of the movable part. When the user presses the movable part, the pressing part compresses and seals the tube, and the movable part is locked by the locking mechanism, thereby maintaining the state where the pressing part seals the tube.

[0004] However, in blood centers and other facilities that process large quantities of blood bags, there are instances where users repeatedly perform operations to seal numerous clamps. Additionally, in busy medical settings, users sometimes rapidly seal clamps. In such cases, users may operate the clamps with one hand without visually checking what's at hand. Rarely, within the clamp, medical tubing may be compressed in a state of lateral displacement from the pressing part, potentially leading to incomplete flow path sealing.

[0005] To prevent incomplete blockage of the flow path of such medical tubes, Japanese Patent Application Publication No. 2018-000836 describes a technique of providing a pair of sidewalls on both sides of the pressing part to prevent lateral displacement of the medical tube. Summary of the Invention

[0006] However, in the above-mentioned clamping device, the following new problem is known to occur: the movable part is locked by the locking mechanism when the pressing part is against the side wall, resulting in the pressing part not completely blocking the medical tube.

[0007] Therefore, the object of the present invention is to provide a clamping device that can reliably seal medical tubing.

[0008] One disclosed aspect is a clamping member comprising: a fixing portion on which a tube is mounted at an upper part; a movable portion above the fixing portion and opposite to the fixing portion; and a sealing portion that presses and seals the tube when the movable portion is pressed against the fixing portion, the sealing portion having: a pressing portion that protrudes from the movable portion toward the fixing portion and presses the tube; a pair of sidewalls that extend in a wall-like manner from both sides of the fixing portion to prevent lateral displacement of the tube; and a guiding structure disposed on at least one of the pressing portion and the sidewalls to guide the pressing portion between the sidewalls.

[0009] According to the above viewpoint, even when the pressing part is against the side wall, the pressing part is guided into the inside of the side wall by the guiding structure, thus reliably sealing the medical tube. Attached Figure Description

[0010] Figure 1 This is a perspective view (1) of the clamping member according to the first embodiment.

[0011] Figure 2 This is a perspective view (2) of the clamping member according to the first embodiment.

[0012] Figure 3 yes Figure 1 A cross-sectional view of the clamping member along the central part in the width direction.

[0013] Figure 4 Therefore Figure 3 The cross-sectional view of the location indicated by line IV-IV.

[0014] Figure 5 This is a cross-sectional view showing an example of the operation of the clamping member in the comparative example.

[0015] Figure 6A It is shown in Figure 1 A cross-sectional view of the action of the pressing part of the clamping component when it presses against the side wall. Figure 6B It is shown Figure 6A A cross-sectional view of the clamping device of a medical tube in a sealed state.

[0016] Figure 7A This is a cross-sectional view of the clamping member according to the second embodiment. Figure 7B It is shown Figure 7A A cross-sectional view of the action of the clamping part pressing against the side wall.

[0017] Figure 8 This is a cross-sectional view of the clamping member according to the third embodiment.

[0018] Figure 9 This is a cross-sectional view of the clamping member according to the fourth embodiment.

[0019] Figure 10A This is a perspective view of the clamping member according to the fifth embodiment. Figure 10B It is shown Figure 10A A cross-sectional view of the action of the clamping part pressing against the side wall. Detailed Implementation

[0020] Hereinafter, preferred embodiments of the clamping member of the present invention will be described in detail with reference to the accompanying drawings.

[0021] (First Embodiment)

[0022] Figure 1 The clamping member 10 shown in this embodiment is integrally formed of resin material and is installed on medical tubing 80 such as blood tubes or infusion tubes, and is used for sealing and opening operations of the medical tubing 80. Figure 1 As shown, the clamping member 10 has: a fixing part 12 for holding a medical tube 80; a movable part 14 disposed above the fixing part 12; a bending part 16 connecting the fixing part 12 and the movable part 14; an upright part 18 opposite to the bending part 16; and a sealing part 20 for sealing the medical tube 80.

[0023] The fixing part 12 is a plate-shaped portion that extends elongated in the front-rear direction, and a medical tube 80 is placed on its upper part. The curved part 16 extends from the rear end of the fixing part 12 toward the top of the fixing part 12. In addition, the upright part 18 extends from the front end of the fixing part 12 toward the top of the fixing part 12. A base part 22 that forms part of the sealing part 20 is formed in the center of the fixing part 12 in the front-rear direction, and a pair of sidewalls 24 extending upward from both sides of the fixing part 12 in the width direction.

[0024] The bent portion 16 is a component extending upward from the fixed portion 12, and its bend is semi-circular when viewed from the side. The bent portion 16 can elastically deform in the direction that reduces or increases the radius of curvature. A first insertion hole 28 is formed in the center of the bent portion 16, extending through in the thickness direction (front-back direction). The first insertion hole 28 is a hole for inserting a medical tube 80 into the tube placement space 30 between the fixed portion 12 and the movable portion 14, and is formed with dimensions in both the width and vertical directions that allow the medical tube 80 to pass through. A pair of pillar portions 32 are formed on both sides of the first insertion hole 28. The stiffness (spring constant) of the bent portion 16 during elastic deformation is determined by these pillar portions 32.

[0025] The upper end of the bent portion 16 is integrally connected to the rear end of the movable portion 14. The bent portion 16 is elastically deformed, thereby the movable portion 14 rotates about the rear end of the bent portion 16, and the movable portion 14 can be displaced in the vertical direction of the fixed portion 12.

[0026] The movable part 14 is a plate-shaped component, with its front end 14a positioned above the front end of the fixed part 12. A claw 34 is formed on the upper side of the front end 14a of the movable part 14, engaging with the locking mechanism 44 described later. The claw 34 extends linearly in the width direction. Figure 2 As shown, the upper surface of the movable part 14 is provided with a plurality of ridges 36 formed by linear protrusions extending in the width direction. These ridges 36 function as anti-slip parts when the user inputs operating force into the movable part 14.

[0027] A protrusion 38 and a pressing part 40, which constitute part of the sealing part 20, are formed on the lower side of the movable part 14. Details of the protrusion 38 and the pressing part 40 will be described later in the description of the sealing part 20.

[0028] On the other hand, the upright portion 18 extends and protrudes from the front end of the fixed portion 12 toward the top of the fixed portion 12. Viewed from the side, the upright portion 18 is curved into an arc shape and extends upwards. Its upper end 18a has an inclined surface 42 that abuts against the lower part of the front end 14a of the movable portion 14, and a locking mechanism portion 44 that engages with the claw portion 34. The inclined surface 42 is formed to slope downwards as it moves rearwards. When the movable portion 14 is pressed, the inclined surface 42 slides against the front end 14a of the movable portion 14, guiding the front end 14a of the movable portion 14 toward the locking mechanism portion 44. When pressure from the movable portion 14 acts on the inclined surface 42, the upright portion 18 bends forwards.

[0029] The locking mechanism 44 is a hook-shaped portion that extends in the width direction and has a groove 44a. When the movable part 14 is pressed down, the locking mechanism 44 engages with the claw 34 of the front end 14a, preventing the movable part 14 from returning to its upward position and locking the movable part 14 in a downward pressed state (pressed state).

[0030] A second insertion hole 46 is formed on the lower side of the locking mechanism part 44 of the upright part 18. The second insertion hole 46 is formed through the upright part 18 in the thickness direction (front-to-back direction). The second insertion hole 46 is rectangular when viewed from the front. The width and vertical dimensions of the second insertion hole 46 are larger than the diameter of the medical tube 80, so that the medical tube 80 can be inserted.

[0031] like Figure 1 As shown, the medical tube 80 is inserted into the tube arrangement space 30 between the fixed part 12 and the movable part 14 via the first insertion hole 28 of the bent part 16 and the second insertion hole 46 of the upright part 18. Furthermore, the sealing of the medical tube 80 is achieved by the sealing part 20.

[0032] The sealing part 20 will be described below. For example... Figure 1 As shown, the sealing part 20 includes a base part 22 and a side wall 24 formed on the side of the fixed part 12, and a protrusion part 38 and a pressing part 40 formed on the side of the movable part 14.

[0033] The base portion 22 includes: a gently sloping front surface 22a; and a rear surface 22b, which, as shown in the figure... Figure 2As shown, it stands approximately perpendicular to the fixing part 12; and an upper end surface 22c is formed between the upper ends of the front surface 22a and the rear surface 22b, parallel to the fixing part 12. The upper end surface 22c is formed at a position where it can abut against the pressing part 40 (described later) when the movable part 14 is pressed, thus becoming a part that supports the medical tube 80 from below. The two sides of the base part 22 are weight-reduced due to the weight-reducing parts 25. Figure 4 As shown, the base portion 22 is supported from below by a rib 26 located at the center in the width direction.

[0034] A pair of sidewalls 24 are provided on both sides of the base portion 22. The sidewalls 24 are formed in a wall-like shape extending upward from the side of the fixing portion 12. The sidewalls 24 protrude upward compared to the upper end face 22c, thereby preventing lateral displacement of the medical tube 80.

[0035] On the other hand, a protrusion 38 is formed protruding from the lower surface of the movable part 14 toward the fixed part 12. The protrusion 38 is formed as a triangle with a apex at its lower end when viewed from the side. The width of the protrusion 38 is made smaller than the distance between the pair of sidewalls 24, allowing it to be inserted into the inside of the sidewalls 24. The two sides of the protrusion 38 are weight-reduced due to the weight-reducing parts 37. Additionally, as... Figure 4 As shown, the protrusion 38 is supported from the movable portion 14 above by a rib 39 located at the center in the width direction. A pressing portion 40 is formed at the lower end of the protrusion 38.

[0036] The pressing part 40 is disposed above the upper end surface 22c of the base part 22, protruding towards the lower end of the protrusion 38. The pressing part 40 is formed as a cylinder having a central axis in the width direction, and presses and seals the medical tube 80 by means of a linear abutment portion 40a extending in the width direction. In order to be able to be inserted between a pair of sidewalls 24, the width dimension of the pressing part 40 is formed to be shorter than the gap (separation distance in the width direction) between the pair of sidewalls 24. In addition, a first inclined structure 48 is formed on both sides of the pressing part 40 in the width direction, and the first inclined structure 48 is inclined in such a way that the width dimension of the pressing part 40 decreases as it approaches the lower end. In this embodiment, as Figure 1 , Figure 2 and Figure 4 As shown, the first inclined structure 48 is formed as a spherical surface 50.

[0037] Additionally, to fill the gap generated when the pressing part 40 abuts against the upper end face 22c, such as Figure 4As shown, a raised portion 52, curved with the same curvature as the sphere 50, is formed at the boundary between the upper end surface 22c of the base portion 22 and the side wall 24. The raised portion 52 extends in the front-rear direction along the root of the base portion 22 and the side wall 24. The raised portion 52 is formed throughout the entire range of the side wall 24 in the front-rear direction. By providing such a raised portion 52, the side wall 24 is strengthened. In addition, due to the raised portion 52, stress concentration at the root of the side wall 24 can be prevented when an external force is applied to the side wall 24, thus preventing damage to the side wall 24.

[0038] The clamping member 10 in this embodiment is configured as described above, and its function will be explained below.

[0039] like Figure 1 and Figure 3 As shown, the clamping member 10 allows the medical tube 80 to be inserted through the first insertion hole 28 and the second insertion hole 46 for use. The medical tube 80 is disposed between the fixed part 12 and the movable part 14 and between a pair of side walls 24, and is held within the tube placement space 30.

[0040] If the user presses down, causing the front end 14a of the movable part 14 to approach the fixed part 12, the bent part 16 elastically deforms by decreasing its radius of curvature. Furthermore, the movable part 14 displaces towards the fixed part 12. Figure 6A As shown, the medical tube 80 is clamped between the pressing part 40 and the upper end face 22c of the base part 22 and is compressed. If the movable part 14 is pressed further, then... Figure 1 The front end 14a of the movable part 14 shown abuts against and slides against the inclined surface 42 of the upright part 18. As the movable part 14 is pressed down, a load in the direction that causes the upright part 18 to tilt forward is applied via the inclined surface 42, and the upper end of the upright part 18 deforms in a forward tilting manner. Furthermore, the claw part 34 of the movable part 14 hooks onto the locking mechanism part 44 of the upright part 18, thereby fixing the movable part 14 to the locking mechanism part 44.

[0041] In the clamping member 10, since a first insertion hole 28 for inserting a medical tube 80 is formed in the bend 16, the rigidity of the bend 16 is reduced. Therefore, when the user presses the movable part 14, its front end 14a may shift in the width direction, and the pressing part 40 of the movable part 14 may rest on the side wall 24.

[0042] Figure 5The clamping member 100 shown in the comparative example does not have the first inclined structure 48 on both sides of the pressing part 40. In the clamping member 100 of the comparative example, if the pressing part 40 rests on the side wall 24, it remains in this state. Even in this case, since the movable part 14 is formed of a resin material that is easily deformable elastically, in the clamping member 100 of the comparative example, when the pressing part 40 rests on the side wall 24, the front end 14a of the movable part 14 is fixed to the locking mechanism part 44. Furthermore, the phenomenon that the sealing of the medical tube 80 is not completely achieved occurs.

[0043] In this embodiment, the clamping member 10 has first inclined structures 48 formed of spherical surfaces 50 on both sides of the pressing portion 40. The first inclined structures 48 are formed of curved surfaces that incline towards the lower end, with the dimension in the width direction of the pressing portion 40 decreasing. Therefore, as... Figure 6A As shown, even when the pressing part 40 rests on the side wall 24, as indicated by the arrow, the pressing part 40 is also introduced between the pair of side walls 24 by the first inclined structure 48. Thus, the clamping member 10 according to this embodiment, as... Figure 6B As shown, the pressing part 40 is reliably inserted between a pair of sidewalls 24, enabling reliable sealing of the medical tube 80.

[0044] The clamping member 10 of this embodiment has the following effects.

[0045] The clamping member 10 of this embodiment includes: a fixing part 12 on which a medical tube 80 is mounted on its upper part; a movable part 14 above the fixing part 12 and opposite to the fixing part 12; and a sealing part 20 that presses and seals the medical tube 80 when the movable part 14 is pressed toward the fixing part 12. The sealing part 20 has: a pressing part 40 that protrudes from the movable part 14 toward the fixing part 12 and presses the medical tube 80 by a linear abutment portion 40a extending in the width direction; a pair of sidewalls 24 that protrude in a wall-like manner from both sides of the fixing part 12 to prevent lateral displacement of the medical tube 80; and a first inclined structure 48 as a guiding structure, which is provided on at least one of the pressing part 40 and the sidewalls 24 to guide the pressing part 40 between the sidewalls 24.

[0046] According to the clamping member 10 described above, even when the pressing part 40 is placed against the side wall 24, the medical tube 80 can be reliably blocked because the pressing part 40 is guided into the inside of the side wall 24 by the guiding structure.

[0047] In the clamping member 10 described above, the first inclined structure 48 can also be formed by a spherical surface 50. With this configuration, the pressing part 40 can be introduced more smoothly between the pair of sidewalls 24.

[0048] In the clamping member 10 described above, a raised portion 52 corresponding to the shape of the first inclined structure 48 may also be formed at the boundary between the fixing portion 12 and the side wall 24. According to this configuration, since the raised portion 52 can fill the gap formed by the first inclined structure 48, the medical tube 80 can be reliably blocked.

[0049] In the clamping member 10 described above, the raised portion 52 may also be formed throughout the entire range of the extension direction of the medical tube 80 on the side wall 24. According to this configuration, the rigidity of the side wall 24 is improved, and deformation and damage to the side wall 24 can be prevented.

[0050] In the above embodiment, the example of the first inclined structure 48 being formed by a spherical surface 50 is described, but this embodiment is not limited to this, and the first inclined structure 48 may also be formed by a flat inclined surface. In addition, the first inclined structure 48 may be formed by connecting multiple inclined surfaces with different inclination angles.

[0051] (Second Implementation)

[0052] Figure 7A The clamping member 10A of this embodiment shown is configured similarly to the first inclined structure 48A of the pressing part 40. Figures 1-4 , Figure 6A , Figure 6B The clamping member 10 shown in the first embodiment is different. It should be noted that, except for the first inclined structure 48A, the configuration of the clamping member 10A is the same as that of the clamping member 10 in the first embodiment. In the clamping member 10A, the same reference numerals are used to mark the same components as those in the clamping member 10, and their detailed descriptions are omitted.

[0053] like Figure 7A As shown, the clamping member 10A of this embodiment has a first inclined structure 48A formed on both sides of the pressing portion 40. The first inclined structure 48A includes a notch 54 formed on both sides of the pressing portion 40. In the illustrated example, the notch 54 is formed in a wedge shape, but it is not limited to this and can be various shapes such as rectangular or semi-circular. The first inclined structure 48A does not tilt when the pressing portion 40 is not against the side wall 24.

[0054] The clamping member 10A in this embodiment is configured as described above, and its function will be explained below.

[0055] Regarding clamping element 10A, such as Figure 7BAs shown, when the pressing part 40 is pressed while resting on the side wall 24, the notched portion 54 of the first inclined structure 48A is crushed. Furthermore, the crushing of the notched portion 54 creates an inclined surface 54a on the side of the pressing part 40. This inclined surface 54a slopes downwards towards the lower end, decreasing in size in the width direction of the pressing part 40. When the movable part 14 is pressed towards the fixed part 12, the pressing part 40 is guided by the inclined surface 54a between the pair of side walls 24. In this way, the first inclined structure 48A also functions as a structure that guides the pressing part 40 between the pair of side walls 24.

[0056] The clamping member 10A of this embodiment has the following effects.

[0057] The clamping member 10A has a first inclined structure 48A as a guide structure, which is formed in the pressing part 40. When it abuts against the upper end of the side wall 24, an inclined surface is formed in the pressing part 40 that is inclined toward the inner side of the side wall 24.

[0058] The clamping member 10A described above can also achieve the same effect as the clamping member 10 in the first embodiment.

[0059] It should be noted that in the clamping member 10A of this embodiment, the first inclined structure 48A is not limited to the notched portion 54, and can also be composed of a component that forms an inclined surface by elastically compressing compared to other portions when a load is applied to press the pressing portion 40 against the side wall 24. For example, the first inclined structure 48A can also be constructed by distributing a material that is easily elastically compressed on both sides of the pressing portion 40.

[0060] (Third Implementation)

[0061] At once Figure 8 In the clamping member 10B of this embodiment shown, a second inclined structure 56 is provided at the upper end of the side wall 24A as a guide structure introduced between the side walls 24A. It should be noted that in the clamping member 10B of this embodiment, the same reference numerals are used to mark the same components as in the clamping member 10 of the first embodiment, and detailed descriptions are omitted.

[0062] Instead of the inclined structures on both sides of the pressing part 40, the clamping member 10B has a second inclined structure 56 at the upper end of the side wall 24A. The second inclined structure 56 is inclined towards the inner side of the pair of side walls 24A. That is, Figure 8The second inclined structure 56 of the left sidewall 24A is inclined downward as it descends from the left end towards the inside (right side), becoming an inclined surface that introduces the side portion of the pressing part 40 into the inside of the sidewall 24A. Similarly, the second inclined structure 56 of the right sidewall 24A is inclined downward as it descends from the right end towards the inside (left side), becoming an inclined surface that introduces the pressing part 40, which abuts against the right sidewall 24A, into the inside of the sidewall 24A.

[0063] The clamping member 10B of this embodiment has the following effects.

[0064] In this embodiment, the clamping member 10B has a second inclined structure 56 as a guide structure, which is formed at the upper end of the side wall 24A and inclined toward the inner side of the side wall 24A.

[0065] According to the clamping member 10B described above, even when the pressing part 40 is placed against the side wall 24A, the medical tube 80 can be reliably blocked because the pressing part 40 is introduced into the inside of the side wall 24A by the second inclined structure 56.

[0066] It should be noted that in the clamping member 10B of this embodiment, the second inclined structure 56 is not limited to a flat surface, and may also be composed of a spherical surface, a parabolic surface, or other curved surface. In addition, the first inclined structure 48 may also be formed on the pressing part 40 side.

[0067] (Fourth implementation)

[0068] As a guiding structure introduced into the space between the sidewalls 24 Figure 9 The clamping member 10C shown in this embodiment has a second inclined structure 56A at the upper end of the side wall 24. It should be noted that in the clamping member 10C of this embodiment, the same reference numerals are used to mark the same components as those in the clamping member 10 of the first embodiment, and detailed descriptions are omitted.

[0069] The second inclined structure 56A of this embodiment has a notch 58 formed on the inner side of the sidewall 24. The upper end of the sidewall 24 is a flat surface that is substantially parallel to the bottom surface of the fixing part 12 when not in contact with the pressing part 40. In the illustrated example, the first inclined structure 48 is formed on both sides of the pressing part 40, but this embodiment is not limited to this, and the first inclined structure 48 may not be formed.

[0070] The clamping member 10C in this embodiment is configured as described above, and its function will be explained below.

[0071] When the movable part 14 of the clamping member 10C is pressed, if the pressing part 40 abuts against the upper end of the side wall 24, the notch 58 of the second inclined structure 56A is crushed due to the load from the upper end of the side wall 24. As a result, the upper end of the side wall 24 becomes an inwardly inclined surface. The pressing part 40 is introduced between the side walls 24 by this inclined surface. In this way, the second inclined structure 56A becomes a structure in which the inclined surface appears when it abuts against the pressing part 40.

[0072] The clamping member 10C of this embodiment has the following effects.

[0073] The clamping member 10C has a second inclined structure 56A as a guide structure. The second inclined structure 56A is formed on the side wall 24. When the pressing part 40 abuts, an inwardly inclined surface is formed at the upper end of the side wall 24.

[0074] According to the clamping member 10C described above, even when the pressing part 40 is attached to the side wall 24, the pressing part 40 can be introduced into the inside of the side wall 24 by means of the second inclined structure 56A, and the medical tube 80 can be reliably blocked.

[0075] (Fifth Embodiment)

[0076] As a guiding structure introduced between sidewalls 24A Figure 10A The clamping member 10D shown has a second inclined structure 56B on the side wall 24A. It should be noted that in the clamping member 10D of this embodiment, the same reference numerals are used to mark the same components as those in the clamping member 10 of the first embodiment, and detailed descriptions are omitted.

[0077] In this embodiment, the sidewall 24A is frame-shaped. The upper end of the sidewall 24A is formed by a plate member 60. The front and rear ends of the plate member 60 are supported by support portions 60a and 60b. The lower side of the plate member 60 forms a hole 62.

[0078] The second inclined structure 56B includes a plurality of cutting grooves 64 formed on the inner side of the plate member 60. The cutting grooves 64 are formed from the upper side of the plate member 60 downward to a predetermined depth. It should be noted that the cutting grooves 64 may also be formed through the plate member 60 in the vertical direction. In addition, the cutting grooves 64 may also be formed to cut into the plate member 60 from the lower side upward.

[0079] The clamping member 10D in this embodiment is configured as described above, and its function will be explained below.

[0080] like Figure 10BAs shown, when the pressing part 40 rests on the upper end of the side wall 24A, the plate member 60 deforms around the cutting groove 64 due to the load from the pressing part 40. Since the cutting groove 64 is formed on the inside, the plate member 60 deforms in an inwardly inclined manner, as shown. Furthermore, an inwardly inclined surface is formed on the upper surface of the plate member 60. In this way, when the pressing part 40 rests on the side wall 24A, the second inclined structure 56B forms an inclined surface that guides the pressing part 40 inward. As a result, the clamping member 10D guides the pressing part 40 between the side walls 24A, reliably sealing the medical tube 80.

[0081] In the above description, preferred embodiments of the present invention have been described, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention.

Claims

1. A clamping element, characterized in that Including: a fixed portion which holds a pipe at an upper portion; a movable portion which opposes the fixed portion above the fixed portion; and a blocking portion which presses to block the pipe when the movable portion is pressed toward the fixed portion, the blocking portion has: a pressing portion which protrudes from the movable portion toward the fixed portion and presses the pipe; a pair of side walls which protrude in a wall shape from both side portions of the fixed portion to prevent lateral displacement of the pipe; and a guide structure which is provided to at least one of the pressing portion and the side walls to introduce the pressing portion between the side walls, the guide structure has a first inclined structure which is formed in the pressing portion to form an inclined surface which inclines toward the inside of the side wall when the upper end of the side wall is brought into contact, the first inclined structure is not inclined in a state in which the pressing portion does not ride on the side wall. Including: a fixed portion which holds a pipe at an upper portion; 2. A clamping element, characterized in that a movable portion which opposes the fixed portion above the fixed portion; and a blocking portion which presses to block the pipe when the movable portion is pressed toward the fixed portion, the blocking portion has: a pressing portion which protrudes from the movable portion toward the fixed portion and presses the pipe; a pair of side walls which protrude in a wall shape from both side portions of the fixed portion to prevent lateral displacement of the pipe; and a guide structure which is provided to at least one of the pressing portion and the side walls to introduce the pressing portion between the side walls, the guide structure has a second inclined structure which is formed in the side wall to form an inclined surface which inclines toward the inside when the pressing portion is brought into contact, the upper end of the side wall is constituted by a flat surface which is substantially parallel to the bottom surface of the fixed portion during a period in which the pressing portion is not in contact. Including: a fixed portion which holds a pipe at an upper portion; a movable portion which opposes the fixed portion above the fixed portion; and a blocking portion which presses to block the pipe when the movable portion is pressed toward the fixed portion, 3. A clamping element, characterized in that the blocking portion has: a pressing portion which protrudes from the movable portion toward the fixed portion and presses the pipe; a pair of side walls which protrude in a wall shape from both side portions of the fixed portion to prevent lateral displacement of the pipe; and a guide structure which is provided to at least one of the pressing portion and the side walls to introduce the pressing portion between the side walls, the guide structure has a first inclined structure which is constituted by a spherical surface which is formed in a side portion of the pressing portion, a protruding portion which is curved with the same curvature as the curvature of the spherical surface is formed in a boundary portion of the fixed portion and the side wall.

4. The clamp according to claim 3, wherein the protruding portion is formed in the entire range of the pipe in the pipe extending direction of the side wall. ​ ​ ​ ​ ​ ​

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