Clamp device

Abstract

To provide a clamp device with improved operability and durability.SOLUTION: A clamp device 1A includes: an attachment part 100; first and second holding parts 11, 21 which sandwich a pole; a rod 31 in which a first male screw 31a1 is threaded at one end side and a second male screw 31b1 formed in a reverse direction of the first male screw is threaded at the other end side; a first base part 12 including a first female screw 12a which is threadedly engaged with the first male screw 31a1; and a second base part 22 including a second female screw 22a which is threadedly engaged with the second male screw 31b1. The rod 31 rotates in a forward direction or a reverse direction to cause the other end to move close to or away from the first holding part 11. The second holding part 21 is disposed between the first holding part 11 and the first base part 12. The second holding part 21 and the second base part 22 are integrally moved along their axial direction in conjunction with rotation of the rod 31. A holding center HC of the first and second holding parts 11, 21 holding the pole is located on an axis AX of the rod 31.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a clamp device for fixing a medical device to a pole.

Background Art

[0002] In the medical field, as a type of medical device, infusion pumps, syringe pumps, etc. for administering a drug solution to a patient are used. These medical devices are generally fixed to the pole of an infusion stand via a clamp device. As a document disclosing such a clamp device, for example, there is Japanese Patent Application Laid-Open No. 2022-25438 (Patent Document 1).

[0003] The clamp device disclosed in Patent Document 1 includes an attachment portion to which a medical device is detachably attached, a first holding portion and a second holding portion, and a rod having a first male screw and a second male screw opposite to the first male screw threaded on its outer peripheral surface. The first holding portion is provided with a first female screw that engages with the first male screw, and the second holding portion is provided with a second female screw that engages with the second male screw. In the clamp device disclosed in Patent Document 1, by rotating the rod, the first holding portion and the second holding portion can be configured to approach or separate from each other.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, in the clamping device disclosed in Patent Document 1, when the pole is sandwiched by the first holding portion and the second holding portion, not only the reaction force from the pole but also torque is applied to the screwed portion between the screws. The torque applied in this way causes galling in the screwed portion between the screws, which may prevent the smooth movement of the second holding portion or cause damage to the screwed portion between the screws.

[0006] Therefore, the present invention has been made to solve the above-described problems, and an object thereof is to improve the operability and durability in a clamping device for fixing a medical device to a pole.

Means for Solving the Problems

[0007] A clamping device according to a first aspect of the present invention is for fixing a medical device to a pole, and includes a mounting portion to which the medical device is detachably attached, a first holding portion and a second holding portion that sandwich the pole to hold the pole, a first male screw is threaded on an outer peripheral surface on one end side in the axial direction, and a second male screw opposite to the first male screw is threaded on the outer peripheral surface on the other end side in the axial direction. And a rod, a first base portion provided with a first female screw that engages with the first male screw, and a second base portion provided with a second female screw that engages with the second male screw. The first holding portion is disposed at a distance from the other end of the rod in the axial direction. The rod is configured to be relatively movable with respect to the first base portion such that when the rod rotates in the forward direction, the other end approaches the first holding portion, and when the rod rotates in the reverse direction, the other end moves away from the first holding portion. The second holding portion is disposed between the first holding portion and the first base portion in the axial direction. The second holding portion and the second base portion are configured to move integrally along the axial direction as the rod rotates by restricting their rotation. In the clamping device according to the first aspect of the present invention, the holding centers of the first holding portion and the second holding portion with respect to the pole are located on the axis of the rod.

[0008] The clamping device according to the second aspect of the present invention is for fixing a medical device to a pole, and includes an attachment portion to which the medical device is detachably attached, a first holding portion and a second holding portion that sandwich and hold the pole, a rod having a first male screw threaded on the outer peripheral surface of one end side in the axial direction and a second male screw opposite to the first male screw threaded on the outer peripheral surface of the other end side in the axial direction, a first base portion provided with a first female screw that engages with the first male screw, and a second base portion provided with a second female screw that engages with the second male screw. The first holding portion is disposed at a distance from the one end of the rod in the axial direction. The rod is configured to be relatively movable with respect to the first base portion such that when the rod rotates in the forward direction, the one end approaches the first holding portion, and when the rod rotates in the reverse direction, the one end moves away from the first holding portion. The second holding portion is disposed between the first holding portion and the first base portion in the axial direction. The second holding portion and the second base portion are configured to move integrally along the axial direction as the rod rotates by restricting their rotation. In the clamping device according to the second aspect of the present invention, the holding centers of the first holding portion and the second holding portion with respect to the pole are located on the axis of the rod.

Effects of the Invention

[0009] According to the present invention, in a clamping device for fixing a medical device to a pole, it is possible to improve the operability and durability.

Brief Description of the Drawings

[0010]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The following embodiments illustrate the case where the present invention is applied to a clamp device for fixing an infusion pump as an example of a medical device to a pole. In the following embodiments, the same or common parts are denoted by the same reference numerals in the drawings, and the description thereof will not be repeated.

[0012] (Embodiment 1) FIG. 1 is a perspective view of a clamp device according to Embodiment 1. FIG. 2 is a schematic plan view of the clamp device shown in FIG. 1 in a released state. FIG. 3 is a schematic plan view of the clamp device shown in FIG. 1 in a clamped state. FIG. 4 is a schematic view of the clamp device as seen from the direction of arrow IV shown in FIG. 2. FIG. 5 is a schematic cross-sectional view of the first unit and the second unit along line V-V shown in FIG. 4. First, with reference to FIGS. 1 to 5, the configuration of the clamp device 1A according to the present embodiment will be described. For ease of understanding, in FIGS. 2 and 3, the portion of the rod 31 where the first male thread 31a1 is threaded is hatched with dense dot hatching, and the portion of the rod 31 where the second male thread 31b1 is threaded is hatched with sparse dot hatching (the same applies to FIGS. 6 and 9 described later).

[0013] As shown in FIG. 1, the clamp device 1A is used to fix an infusion pump 200 as a medical device to a pole 300 of an infusion stand.

[0014] As shown in FIGS. 1 to 5, the clamp device 1A includes a mounting portion 100, a first unit 10 having a first holding portion 11, a second unit 20 having a second holding portion 21, and an operation portion 30 having a rod 31.

[0015] The clamp device 1A clamps the pole 300 by rotating the rod 31 and sandwiching the pole 300 between the first holding portion 11 and the second holding portion 21. Hereinafter, the state in which the pole 300 is clamped by the first holding portion 11 and the second holding portion 21 is referred to as a clamped state (see FIG. 3), and the state in which the pole 300 is not clamped by the first holding portion 11 and the second holding portion 21 is also referred to as a released state (see FIG. 2). The method of sandwiching the pole 300 by the first holding portion 11 and the second holding portion 21 will be described in detail later.

[0016] The mounting portion 100 is in a trapezoidal shape configured to removably mount the infusion pump 200 thereon. More specifically, the infusion pump 200 is mounted on the mounting portion 100 via the fixing screw 101 exposed from the upper surface of the mounting portion 100. Note that the method of mounting the infusion pump 200 to the mounting portion 100 is not particularly limited to the method using the fixing screw 101, and various known mounting methods can be changed. The material of the mounting portion 100 is not particularly limited, and for example, it is made of plastic.

[0017] The operation unit 30 has a rod 31 and a handle portion 32 configured to be rotatable about the axis AX with respect to the rod 31. The rod 31 includes a first end portion 31a and a second end portion 31b which are a pair of end portions located along its axial direction. The handle portion 32 is attached to the first end portion 31a of the rod 31.

[0018] A first male screw 31a1 is threaded on the outer peripheral surface of the first end portion 31a side which is one end side in the axial direction of the rod 31. A second male screw 31b1 opposite to the first male screw 31a1 is threaded on the outer peripheral surface of the second end portion 31b side which is the other end side in the axial direction of the rod 31. Note that the two screws being opposite to each other means that in the case where one screw is configured to be tightened by turning it to the right as viewed by the operator, the other screw is configured to be tightened by turning it to the left as viewed by the operator.

[0019] The first unit 10 has a first holding portion 11, a first base portion 12, and a connecting portion 13 that connects the first holding portion 11 and the first base portion 12 to each other.

[0020] The first holding portion 11 sandwiches the pole 300 together with the second holding portion 21 to hold the pole. A first holding groove 11a having a substantially V shape in plan view is provided in a part of the surface of the first holding portion 11. Thereby, the first holding portion 11 can contact the pole 300 at a plurality of points. The first holding portion 11 is arranged at a distance from the second end portion 31b of the rod 31 in the axial direction of the rod 31.

[0021] The first base portion 12 is a substantially plate-shaped portion to which the rod 31 is assembled. The first base portion 12 is provided with a hole that penetrates it in the thickness direction. A first female screw 12a is provided on the side surface of this hole. The first base portion 12 is assembled to the rod 31 such that the first female screw 12a is screwed onto the first male screw 31a1.

[0022] The connecting portion 13 has a substantially plate shape, and the first holding portion 11 is connected to one end in its longitudinal direction, and the first base portion 12 is connected to the other end. Thereby, the first unit 10 has a substantially U-shaped shape in plan view as a whole. An attachment portion 100 is attached to the connecting portion 13 via a plurality of fixing screws. Note that the shape of the connecting portion 13 is not particularly limited to a substantially plate shape and can be changed as appropriate.

[0023] The rod 31 is configured to be relatively movable with respect to the first base portion 12. More specifically, the rod 31 is configured such that when the rod 31 rotates in the forward direction, the second end portion 31b approaches the first holding portion 11, and when the rod 31 rotates in the reverse direction, the second end portion 31b moves away from the first holding portion 11.

[0024] The second unit 20 is a block-shaped portion having a second holding portion 21 and a second base portion 22. In the present embodiment, the second unit 20 is configured by a single member. The second holding portion 21 is disposed on the side of the second unit 20 that faces the first holding portion 11. The second base portion 22 is disposed on the side of the second unit 20 opposite to the side that faces the first holding portion 11.

[0025] The second holding portion 21 sandwiches the pole 300 together with the first holding portion 11 to hold the pole 300. The second holding portion 21 is located between the first holding portion 11 and the first base portion 12 in the axial direction of the rod 31.

[0026] A second retaining groove 21a is provided in a portion of the surface of the second retaining portion 21 that faces the first retaining groove 11a. The second retaining groove 21a has a substantially V-shaped cross-section in plan view. As a result, the second retaining portion 21 can contact the pole 300 at a plurality of points.

[0027] The second base portion 22 is a portion where the rod 31 is assembled. A hole 22b is provided in the surface of the second base portion 22 on the side facing the first base portion 12. A second female thread 22a is provided in a portion of the side surface of the hole 22b that is located on the surface side. The second base portion 22 is assembled to the rod 31 such that the second female thread 22a is screwed onto the second male thread 31b1 of the rod 31. The second female thread 22a is not provided in a portion of the side surface of the hole 22b that is located on the side of the second retaining portion 21. That is, the second male thread 31b1 of the rod 31 is not screwed into a portion of the side surface of the hole 22b that is located on the side of the second retaining portion 21.

[0028] Also, the hole 22b does not reach the surface of the second retaining portion 21 on the side where the second retaining groove 21a is provided. Therefore, the rod 31 is not exposed in the space between the first retaining portion 11 and the second retaining portion 21.

[0029] As described above, the rod 31 is assembled to the first base portion 12 such that the first male thread 31a1 is screwed onto the first female thread 12a of the first base portion 12. Also, the rod 31 is assembled to the second base portion 22 such that the second male thread 31b1 is screwed onto the second female thread 22a of the second base portion 22.

[0030] Here, the holding centers HC (see FIGS. 2 and 3) of the first holding portion 11 and the second holding portion 21 with respect to the pole 300 are located on the axis AX of the rod 31. As a result, in the clamping device 1A, it is possible to improve the operability and durability, which will be described in detail later.

[0031] As shown in FIGS. 2 to 4, the second unit 20 further has a pair of protruding portions 23 that protrude from the second unit 20 toward the connecting portion 13 side. One of the pair of protruding portions 23 is located at one end in the height direction of the second unit 20 (i.e., the depth direction in FIGS. 2 and 3 and the left-right direction in FIG. 4). The other of the pair of protruding portions 23 is located at the other end in the above height direction of the second unit 20.

[0032] One of the pair of protruding portions 23 abuts on the upper surface 13a of the connecting portion 13 as a guide portion. The other of the pair of protruding portions 23 abuts on the lower surface 13b of the connecting portion 13 as a guide portion.

[0033] In the clamp device 1A configured as described above, by rotating the rod 31 in the forward direction as described above, the second end portion 31b approaches the first holding portion 11, and accordingly, the second holding portion 21 approaches the first holding portion 11 (see the arrow AR in FIG. 3). Similarly, by rotating the rod 31 in the reverse direction, the second end portion 31b separates from the first holding portion 11, and accordingly, the second holding portion 21 separates from the first holding portion 11.

[0034] At this time, the second holding portion 21 is fixed to be immovable relative to the second base portion 22 in the in-plane direction of a plane orthogonal to the axial direction of the rod 31. This is because the second unit 20 having the second holding portion 21 and the second base portion 22 is configured by a single member as described above.

[0035] Further, when the second unit 20 moves relative to the first unit 10 as the rod 31 rotates, the upper surface 13a and the lower surface 13b of the connecting portion 13 function as guide portions that restrict the rotation of the second holding portion 21 and the second base portion 22 with respect to the connecting portion 13. As a result, the second holding portion 21 and the second base portion 22 are configured to move integrally along the axial direction of the rod 31 as the rod 31 rotates.

[0036] Furthermore, both the upper surface 13a and the lower surface 13b of the connecting portion 13 extend along a direction parallel to the axial direction of the rod 31. Thereby, the upper surface 13a and the lower surface 13b of the connecting portion 13 also function as guide portions for moving the second holding portion 21 and the second base portion 22 along the axial direction.

[0037] In the clamp device 1A configured as described above, when clamping the pole 300 by the first holding portion 11 and the second holding portion 21, first, in the released state of the clamp device 1A (see FIG. 2), the pole 300 is disposed in the space between the first holding portion 11 and the second holding portion 21. Next, by rotating the rod 31 using the handle portion 32, the clamp device 1A is brought into the clamped state (see FIG. 3). More specifically, both the first holding portion 11 and the second holding portion 21 come into contact with the outer peripheral surface of the pole 300, and the second holding portion 21 is brought closer to the first holding portion 11 such that the holding center HC of the first holding portion 11 and the second holding portion 21 with respect to the pole 300 coincides with the axial center of the pole. Thereby, the pole 300 is clamped by the first holding portion 11 and the second holding portion 21.

[0038] Here, in the clamp device 1A according to the present embodiment, as described above, the holding centers HC of the first holding portion 11 and the second holding portion 21 with respect to the pole 300 are located on the axis AX of the rod 31.

[0039] By configuring in this way, when clamping the pole 300 by the first holding portion 11 and the second holding portion 21, it is possible to effectively suppress the application of torque caused by the reaction force from the pole 300 to the screwing portions of the first male screw 31a1 and the first female screw 12a, and the screwing portions of the second male screw 31b1 and the second female screw 22a.

[0040] As a result, it is effectively suppressed that the threaded portions of the screws are bitten, and thus, it is possible to prevent that the smooth movement of the second holding portion 21 relative to the first holding portion 11 is hindered, that the threaded portions of the screws are damaged, or that the force required to rotate the rod 31 becomes excessive.

[0041] Therefore, by using the clamping device 1A according to the present embodiment, in the clamping device for fixing a medical device to a pole, it is possible to improve the operability and durability.

[0042] Further, in the clamping device 1A according to the present embodiment, as described above, the rod 31 is not exposed in the space between the first holding portion 11 and the second holding portion 21 in either the clamped state or the released state.

[0043] By configuring in this way, when the pole 300 is sandwiched between the first holding portion 11 and the second holding portion 21, it is possible to effectively prevent a cable or the like close to the pole 300 from being entangled with the rod 31 or being caught in the threaded portions of the screws.

[0044] (Modification example) FIG. 6 is a schematic plan view of the vicinity of the second unit of the clamping device according to the modification example. FIG. 7 is a schematic view of the second unit and the rod viewed from the direction of arrow VII shown in FIG. 6. FIG. 8 is a schematic cross-sectional view of the second unit and the rod along line VIII-VIII shown in FIG. 7. Hereinafter, with reference to FIGS. 6 to 8, the clamping device 1A1 according to the modification example based on the above-described embodiment will be described.

[0045] As shown in FIGS. 6 to 8, the clamping device 1A1 according to the present modification example has a different configuration of the second unit 20A when compared with the clamping device 1A according to the above-described Embodiment 1.

[0046] More specifically, in the clamping device 1A1 according to this modified example, the second holding portion 21A and the second base portion 22A that constitute the second unit 20A are configured separately.

[0047] The outer shape of the second holding portion 21A is generally the same as the outer shape of the second unit 20 in the above-described first embodiment. The second holding portion 21A is provided with a hollow portion configured to be able to receive a part of the second base portion 22A and the rod 31 in the internal space.

[0048] The second base portion 22A includes a cylindrical portion and a flange portion protruding outward from one end of the cylindrical portion. The flange portion is configured such that the shape when viewed along the axial direction of the cylindrical portion is rectangular. A second female screw 22a is provided on the inner peripheral surface of the cylindrical portion.

[0049] A through hole 21A1 is provided on the surface of the second holding portion 21A on the side facing the first base portion 12. The diameter of the through hole 21A1 is configured to be larger than the outer diameter of the cylindrical portion of the second base portion 22A. By inserting the cylindrical portion of the second base portion 22A into the through hole 21A1, the second holding portion 21A is fixed so as to be swingable with respect to the second base portion 22A in the in-plane direction of a plane orthogonal to the axial direction of the rod 31.

[0050] An E-ring 40 is attached to a portion of the outer peripheral surface of the cylindrical portion of the second base portion 22A that is located inside the hollow portion of the second holding portion 21A. By the E-ring 40 abutting against the surface of the second holding portion 21A on the side facing the first base portion 12 from the inside, the second holding portion 21A is prevented from coming off the cylindrical portion of the second base portion 22A.

[0051] Also, four protruding portions 21A2 are provided on the surface of the second holding portion 21A on the side facing the first base portion 12, which are arranged close to the flange portion of the second base portion 22A. These four protruding portions 21A2 function as stoppers that restrict the rotation of the second holding portion 21A with respect to the second base portion 22A. Note that the number, shape, arrangement, etc. of the protruding portions 21A2 can be changed as appropriate.

[0052] Even when configured in this way, the same effects as those described in the above-described embodiments can be obtained, and in a clamp device for fixing a medical device to a pole, the operability and durability can be improved.

[0053] Further, in the clamp device 1A1 according to this modification, as described above, the second holding portion 21A is fixed to the second base portion 22A so as to be swingable in the in-plane direction of a plane orthogonal to the axial direction of the rod 31. Thereby, the second holding portion 21A can be made to abut against the pole 300 more reliably at a plurality of points. Therefore, it becomes possible to clamp the pole 300 more firmly by the first holding portion 11 and the second holding portion 21A.

[0054] In the clamp device 1A1 according to the above-described modification, the case where the rotation of the second holding portion 21A with respect to the second base portion 22A is restricted by providing a plurality of protrusions 21A2 on the second holding portion 21A has been described as an example. However, the method of restricting this rotation can be variously changed. For example, a key groove may be provided in either the second holding portion 21A or the second base portion 22A, and a key may be inserted therein to restrict the rotation of the second holding portion 21A with respect to the second base portion 22A. Further, by making both the shape of the through hole 21A1 of the second holding portion 21A and the outer shape of the cylindrical portion of the second base portion 22A substantially D-shaped in cross section, the rotation of the second holding portion 21A with respect to the second base portion 22A may be restricted.

[0055] (Embodiment 2) FIG. 9 is a schematic plan view of the clamp device according to Embodiment 2 in a released state. Hereinafter, the clamp device 1B according to Embodiment 2 will be described with reference to FIG. 9.

[0056] As shown in FIG. 9, the clamp device 1B according to the present embodiment has a different configuration of the second unit 20B and the operation unit 30B when compared with the clamp device 1A according to Embodiment 1 described above.

[0057] More specifically, in addition to the second holding part 21B and the second base part 22B, the second unit 20B has a connecting part 24B that connects the second holding part 21B and the second base part to each other. The connecting part 24B has a substantially plate shape, and the second holding part 21B is connected to one end in the longitudinal direction thereof, and the second base part 22B is connected to the other end. Thereby, the second unit 20B has a substantially U-shaped shape in plan view as a whole.

[0058] Also, thereby, the second holding part 21B and the second base part 22B are arranged at a distance from each other in the axial direction of the rod 31B. The first base part 12 is located between the second holding part 21B and the second base part 22B in the axial direction of the rod 31B.

[0059] A first external thread 31a1 is screwed on the outer peripheral surface of the first end portion 31a side which is one end side in the axial direction of the rod 31B. A second external thread 31b1 opposite to the first external thread 31a1 is screwed on the outer peripheral surface of the second end portion 31b side which is the other end side in the axial direction of the rod 31B. The handle part 32B is attached to the second end portion 31b of the rod 31B.

[0060] A hole portion 21b that does not reach the other surface (that is, the surface on the side where the second holding groove 21a is provided) is provided on the surface of the second holding part 21B on the side facing the first base part 12. The first end portion 31a as one end of the rod 31B is received in the hole portion 21b. Note that a female thread is not provided on the side surface of the hole portion 21b. That is, the first external thread 31a1 of the rod 31B is not screwed into the hole portion 21b.

[0061] In the clamping device 1B including the second unit 20B configured as described above, the first holding portion 11 is disposed at a distance from the first end portion 31a as one end of the rod 31 in the axial direction of the rod 31. Further, the rod 31 is configured to be relatively movable with respect to the first base portion 12 such that when the rod 31 rotates in the forward direction, the first end portion 31a as one end approaches the first holding portion 11, and when the rod 31 rotates in the reverse direction, the first end portion 31a as one end moves away from the first holding portion 11.

[0062] Even in such a configuration, the same effects as those described in the above-described embodiment can be obtained, and in a clamping device for fixing a medical device to a pole, the operability and durability can be improved.

[0063] (Supplementary Note) Summarizing the characteristic configurations of the clamping devices disclosed in the above-described embodiment and its modifications, it is as follows.

[0064] [Supplementary Note 1] A clamping device for fixing a medical device to a pole, a mounting portion to which the medical device is detachably attached, a first holding portion and a second holding portion that sandwich and hold the pole, a rod having a first male screw threaded on the outer peripheral surface of one end side in the axial direction and a second male screw opposite to the first male screw threaded on the outer peripheral surface of the other end side in the axial direction, a first base portion provided with a first female screw that engages with the first male screw, a second base portion provided with a second female screw that engages with the second male screw, the first holding portion is disposed at a distance from the other end of the rod in the axial direction, The rod is configured to be relatively movable with respect to the first base portion such that when the rod rotates in the forward direction, the other end approaches the first holding portion, and when the rod rotates in the reverse direction, the other end moves away from the first holding portion. The second holding portion is disposed between the first holding portion and the first base portion in the axial direction. The second holding portion and the second base portion are configured to move integrally along the axial direction as the rod rotates, by restricting their rotation. A clamping device in which the holding centers of the first holding portion and the second holding portion with respect to the pole are located on the axis of the rod.

[0065] [Appendix 2] A clamping device for fixing a medical device to a pole, An attachment portion to which the medical device is detachably attached, A first holding portion and a second holding portion that sandwich the pole to clamp the pole, A rod having a first male thread threaded on an outer peripheral surface on one end side in the axial direction, and a second male thread opposite to the first male thread threaded on an outer peripheral surface on the other end side in the axial direction, A first base portion provided with a first female thread that engages with the first male thread, A second base portion provided with a second female thread that engages with the second male thread, The first holding portion is disposed at a distance from the one end of the rod in the axial direction. The rod is configured to be relatively movable with respect to the first base portion such that when the rod rotates in the forward direction, the one end approaches the first holding portion, and when the rod rotates in the reverse direction, the one end moves away from the first holding portion. The second holding portion is disposed between the first holding portion and the first base portion in the axial direction. The second holding portion and the second base portion are configured to move integrally along the axial direction as the rod rotates, by restricting their rotation. A clamping device in which the holding centers of the first holding part and the second holding part with respect to the poles are located on the axis of the rod.

[0066] [Appendix 3] The clamping device according to Appendix 1 or 2, wherein the second holding part is fixed to the second base part so as not to move in the in-plane direction of the plane orthogonal to the axial direction.

[0067] [Appendix 4] The clamping device according to Appendix 1 or 2, wherein the second holding part is assembled to the second base part so as to be swingable in the in-plane direction of the plane orthogonal to the axial direction.

[0068] [Appendix 5] Further comprising a connecting part that connects the first holding part and the first base part to each other, The clamping device according to any one of Appendices 1 to 4, wherein the connecting part includes a guide part that moves the second holding part and the second base part along the axial direction and restricts rotation of the second holding part and the second base part with respect to the connecting part.

[0069] (Other forms, etc.) In the embodiments of the present invention and their modified examples described above, the shapes, configurations, sizes, numbers, materials, etc. of each part shown can be variously changed as long as they do not deviate from the gist of the present invention.

[0070] Also, the characteristic configurations shown in the embodiments of the present invention and their modified examples described above can be naturally combined with each other within the range allowed in light of the gist of the present invention.

[0071] Thus, the above-described embodiments and their modified examples disclosed this time are illustrative in all respects and not restrictive. The technical scope of the present invention is defined by the claims, and includes all modifications within the meaning and scope equivalent to the description of the claims.

Explanation of Reference Numerals

[0072] 1A, 1A1, 1B clamp devices, 10 first unit, 11 first holding part, 11a first holding groove, 12 first base part, 12a first female screw, 13 connecting part, 13a upper surface, 13b lower surface, 20, 20A, 20B second units, 21, 21A, 21B second holding parts, 21a second holding groove, 21b hole part, 21A1 through hole, 21A2 protruding part, 22, 22A, 22B second base parts, 22a second female screw, 22b hole part, 23 protruding part, 24B connecting part, 30, 30B operating parts, 31, 31B rods, 31a first end, 31a1 first male screw, 31b second end, 31b1 second male screw, 32, 32B handle parts, 40 E-ring, 100 mounting part, 101 fixing screw, 200 infusion pump, 300 pole, AX axis, HC holding center.

Claims

1. A clamp device for fixing a medical device to a pole, comprising: a mounting portion to which the medical device is detachably attached; a first holding portion and a second holding portion that sandwich the pole to hold the pole; a rod having a first male screw threaded on an outer peripheral surface of one end side in the axial direction and a second male screw threaded on the outer peripheral surface of the other end side in the axial direction, the second male screw being opposite in direction to the first male screw; a first base portion provided with a first female screw that engages with the first male screw; a second base portion provided with a second female screw that engages with the second male screw; the first holding portion is disposed at a distance from the other end of the rod in the axial direction; the rod is configured to be relatively movable with respect to the first base portion such that when the rod rotates in the forward direction, the other end approaches the first holding portion, and when the rod rotates in the reverse direction, the other end moves away from the first holding portion; the second holding portion is disposed between the first holding portion and the first base portion in the axial direction; the second holding portion and the second base portion are configured to move integrally along the axial direction as the rod rotates by restricting their rotation; A clamp device, wherein the holding centers of the first holding portion and the second holding portion with respect to the pole are located on the axis of the rod.

2. A clamp device for fixing a medical device to a pole, comprising: a mounting portion to which the medical device is detachably attached; a first holding portion and a second holding portion that sandwich the pole to hold the pole; a rod having a first male screw threaded on an outer peripheral surface of one end side in the axial direction and a second male screw threaded on the outer peripheral surface of the other end side in the axial direction, the second male screw being opposite in direction to the first male screw; a first base portion provided with a first female screw that engages with the first male screw; a second base portion provided with a second female screw that engages with the second male screw; the first holding portion is disposed at a distance from the one end of the rod in the axial direction; the rod is configured to be relatively movable with respect to the first base portion such that when the rod rotates in the forward direction, the one end approaches the first holding portion, and when the rod rotates in the reverse direction, the one end moves away from the first holding portion; the second holding portion is disposed between the first holding portion and the first base portion in the axial direction; The second holding part and the second base part are configured to move integrally along the axial direction as the rod rotates by restricting their rotation. A clamping device in which the holding centers of the first holding part and the second holding part with respect to the pole are located on the axis of the rod. **Claim 3** The clamping device according to claim 1 or 2, wherein the second holding part is fixed to the second base part so as not to move in the in-plane direction of a plane orthogonal to the axial direction. **Claim 4** The clamping device according to claim 1 or 2, wherein the second holding part is swingably assembled to the second base part in the in-plane direction of a plane orthogonal to the axial direction. **Claim 5** The clamping device further includes a connecting part that connects the first holding part and the first base part to each other. The clamping device according to claim 1 or 2, wherein the connecting part includes a guide part that moves the second holding part and the second base part along the axial direction and restricts the rotation of the second holding part and the second base part with respect to the connecting part.

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