CN213373468U

CN213373468U - Integral hand fixing device for transradial artery and transnasal arteria fumosa intervention operation

Info

Publication number: CN213373468U
Application number: CN202022081633.3U
Authority: CN
Inventors: 骆银根; 曹家玮; 张晓武; 赵赫; 李肖
Original assignee: Cancer Hospital and Institute of CAMS and PUMC
Current assignee: Cancer Hospital and Institute of CAMS and PUMC
Priority date: 2020-09-21
Filing date: 2020-09-21
Publication date: 2021-06-08
Anticipated expiration: 2030-09-21

Abstract

The utility model provides a radial artery and intranasal ashtray artery intervene operation integral type hand fixing device relates to medical instrument technical field, has solved the radial artery of the menstruation that exists among the prior art and has intervened the technical problem who lacks dedicated hand fixing device in the operation through snuff ashtray artery. The device comprises a palm limiting part, an elbow supporting part, a support and a base, wherein the palm limiting part is connected with the support through an adjusting piece, the adjusting piece can move along the length direction of the support, the adjusting piece and the palm limiting part can rotate relatively, and the palm limiting part is used for limiting the palm of a patient or holding the palm of the patient; the elbow supporting part is connected with the support through an adjusting part, the adjusting part can move along the length direction of the support, the adjusting part and the elbow supporting part can rotate relatively, and the elbow supporting part is used for supporting the elbow of a patient; the support can change the relative position between the palm limiting part and the elbow supporting part, and the base can be clamped on the operating bed. The utility model is used for support arm and fixed hand.

Description

Integral hand fixing device for transradial artery and transnasal arteria fumosa intervention operation

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to a radial artery and intranasal ashtray artery intervention operation integral type hand fixing device is related to.

Background

The optimal radial artery puncture point needs to be exposed and the arm of the patient needs to be kept fixed through the radial artery interventional operation, the radial wrist of the forearm of the patient is the radial artery puncture point, and the position of a catheter and a guide wire which are needed by the interventional operation and enter the radial artery is also the radial artery puncture point. However, one transradial interventional operation is averagely used for 1.0 to 2.0 hours, so that a patient is difficult to keep the fixed state of the arm and the everted and exposed state of the wrist all the time, the smoothness of related operations of the operator by using a guide wire and a catheter is influenced, the operation difficulty is increased, and the operation efficiency is reduced; the puncture point of transnasal nicotinergic artery interventional operation is located in the nasal nicotinergic region of the back of the radial hand, and in the long-time operation process, a patient hardly keeps the arm in a fixed state, so that the operation difficulty can be increased.

At present, a foam pad is clinically placed on the body side of a patient and padded on the elbow of the patient, and the foam pad can possibly fall off from an operation bed in the operation process because the foam pad cannot be fixed; the height of the foam pad is constant and cannot be adjusted according to the size of the patient or the height that the patient considers comfortable, so that the patient's wrist eversion exposure still cannot be maintained for a long time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a radial artery and intranasal nicotinergia artery intervene operation integral type hand fixing device to solve the radial artery that exists among the prior art and intervene the technical problem who lacks dedicated hand fixing device in the operation through intranasal nicotinergia artery. The utility model provides a plurality of technical effects that preferred technical scheme among a great deal of technical scheme can produce see the explanation below in detail.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an integral hand fixing device for radial artery and transnasal ashtray artery interventional operation, which comprises a palm limiting part, an elbow supporting part, a support and a base, wherein the palm limiting part is connected with the support through an adjusting part, the adjusting part can move along the length direction of the support, the adjusting part and the palm limiting part can rotate relatively, and the palm limiting part is used for limiting the palm of a patient or holding the hand of the patient;

the elbow supporting part is connected with the support through an adjusting piece, the adjusting piece can move along the length direction of the support, the adjusting piece and the elbow supporting part can rotate relatively, and the elbow supporting part is used for supporting the elbow of the patient;

the support can change the relative position between the palm limiting part and the elbow supporting part, the support is connected with the base and can move on the base, and the base can be clamped on an operating table.

Optionally, the spacing portion of palm includes palm backing plate, first telescopic link and palm accepting portion, the one end of first telescopic link is inserted in the regulating part just first telescopic link with the regulating part rotates to be connected, the other end of first telescopic link with the tip of palm accepting portion rotates through the pivot to be connected, the palm backing plate is fixed on the first telescopic link, the palm accepting portion can with patient's palm is pressed on the palm backing plate, or the palm accepting portion rotate to with can be used for when the palm backing plate is perpendicular patient's hand grips.

Optionally, a detachable wrist pad is arranged on the palm pad.

Optionally, the elbow supporting portion comprises an elbow pad and a second telescopic rod, the elbow pad is fixedly connected with the second telescopic rod, the second telescopic rod is inserted into the adjusting piece, and the second telescopic rod is rotatably connected with the adjusting piece.

Optionally, a cushioning layer is disposed on the elbow pad.

Optionally, the support includes dwang and dead lever, the dwang with the both ends of dead lever are rotated through rotating and are connected, the free end of dead lever can insert the base, the dwang with the regulating part is connected just the regulating part can be followed the length direction of dead lever removes, the dead lever with the adjusting part is connected just the adjusting part can be followed the length direction of dead lever removes.

Optionally, the adjusting member includes a first moving block and a first knob, the bracket passes through the first moving block, the first moving block can move on the bracket, the first knob is in threaded connection with the first moving block, the first knob can abut against the bracket, and the palm limiting portion is rotatably connected with the first moving block.

Optionally, the adjusting member includes a second moving block, a second knob and a swinging portion, the support passes through the second moving block, the second moving block can move on the support, the second knob is in threaded connection with the second moving block, the second knob can abut against the support, the second moving block is rotatably connected with the swinging portion, and the elbow supporting portion is rotatably connected with the swinging portion.

Optionally, the base includes a third knob, a clamping member and a fastening member, the support penetrates through the clamping member and the clamping member can move on the support, the third knob is in threaded connection with the clamping member and the third knob can abut against the support, the clamping member is in threaded connection with the fastening member and the clamping member can be clamped on the operating table through the fastening member.

Optionally, the fastener includes mounting plate, fourth knob and threaded rod, the both ends of threaded rod respectively with mounting plate with fourth knob fixed connection, the threaded rod passes the holder just the threaded rod with holder threaded connection, the fourth knob is located the outside of holder, the mounting plate is located the inside of holder just the mounting plate can with the holder is pressed from both sides tightly the operation table.

The utility model provides an integrated hand fixing device for transradial artery and transnasal arteria intervenient operation, a base is clamped and fixed on the side surface of an operating bed, the positions of a palm spacing part and an elbow supporting part on a bracket are adjusted, the inclination angle of the palm limit part is adjusted through the adjusting part, the inclination angle of the elbow supporting part is adjusted through the adjusting part, so that the arm of the patient is placed on the palm limit part and the elbow supporting part, thereby helping the patient to keep the fixed arm and the state of wrist eversion and exposure or hand holding all the time during the operation, can facilitate the smooth operation of doctors, reduce the operation difficulty of the operation, improve the operation efficiency, simultaneously reduces the uncomfortable feeling of the arm of the patient in the operation and improves the satisfaction degree of the patient so as to solve the technical problem that the special hand fixing device is lacked in the transradial artery and transnasal arteria intervention operation in the prior art.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of an integrated hand fixing device for transradial and transnasal arteria arterians intervention provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of the other side of the integrated hand fixing device for transradial and transnasal arteria nicotinalis intervention provided by the embodiment of the present invention;

fig. 3 is a schematic structural view of the other side of the integrated hand fixing device for transradial and transnasal arteria nicotinalis intervention provided by the embodiment of the present invention;

fig. 4 is a schematic structural view illustrating a connection between a fixing rod and an elbow supporting portion of the integrated hand fixing device for transradial and transnasal arteria nicotinalis intervention provided by the embodiment of the present invention;

fig. 5 is a schematic structural view illustrating a connection between a rotating rod and a palm-limiting part of the integrated hand fixing device for transradial and transnasal arteria nicotiana interventional surgery provided by the embodiment of the present invention;

fig. 6 is a schematic structural view of a base of the integrated hand fixing device for transradial artery and transnasal arteria nicotinalis intervention provided by the embodiment of the present invention;

fig. 7 is a schematic structural view of a clamping member of the integrated hand fixing device for transradial artery and transnasal arteria arterians intervention operation provided by the embodiment of the present invention;

in the figure 1, a palm limiting part; 11. a palm pad plate; 111. a wrist cushion block; 12. a first telescopic rod; 13. a palm receiving portion; 2. an elbow support; 21. an elbow pad; 22. a second telescopic rod; 3. a support; 31. rotating the rod; 32. fixing the rod; 33. a rotating member; 331. a fixed block; 332. rotating the block; 4. a base; 41. a third knob; 42. a clamping member; 421. a clamping groove; 43. a fastener; 431. a fastening plate; 432. a fourth knob; 433. a threaded rod; 5. an adjustment member; 51. a first moving block; 52. a first knob; 6. an adjustment member; 61. a second moving block; 62. a second knob; 63. a swinging part.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is also to be understood that the terms "mounted", "connected" and "connected", unless expressly specified or limited otherwise, are intended to be interpreted broadly, as meaning either a fixed connection or a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

The utility model provides a radial artery and transnasal ashtray artery intervention operation integrated hand fixing device, which comprises a palm limiting part 1, an elbow supporting part 2, a bracket 3 and a base 4, wherein the palm limiting part 1 is connected with the bracket 3 through an adjusting part 5, the adjusting part 5 can move along the length direction of the bracket 3, the adjusting part 5 and the palm limiting part 1 can rotate relatively, the adjusting part 5 moves on the bracket 3 and then can drive the palm limiting part 1 to move, and the palm limiting part 1 is used for limiting the palm of a patient or holding the hand of the patient; the elbow supporting part 2 is connected with the support 3 through an adjusting piece 6, the adjusting piece 6 can move along the length direction of the support 3, the adjusting piece 6 and the elbow supporting part 2 can rotate relatively, the adjusting piece 6 moves on the support 3 to drive the elbow supporting part 2 to move, and the elbow supporting part 2 is used for supporting the elbow of a patient; support 3 can change the relative position between the two of the spacing portion 1 of palm and elbow supporting part 2, spacing portion 1 of palm and elbow supporting part 2 are located support 3's homonymy, support 3 is connected with base 4 and support 3 can move on base 4, be for changing support 3's height, and then make things convenient for the patient of different heights, base 4 both can press from both sides in the left side of operation table, can press from both sides the right side at the operation table again, when the both sides position of operation table, this device all can use. The utility model provides an integrated hand fixing device for transradial artery and transnasal arteria intervenient operation, a base 4 is clamped and fixed on the side surface of an operating bed, the positions of a palm limiting part 1 and an elbow supporting part 2 on a bracket 3 are adjusted, the inclination angle of the palm limit part 1 is adjusted through the adjusting part 5, the inclination angle of the elbow supporting part 2 is adjusted through the adjusting part 6, so that the arm of the patient is placed on the palm limit part 1 and the elbow supporting part 2, thereby helping the patient to keep the fixed arm and the state of wrist eversion and exposure or hand holding all the time during the operation, can facilitate the smooth operation of doctors, reduce the operation difficulty of the operation, improve the operation efficiency, simultaneously reduces the uncomfortable feeling of the arm of the patient in the operation and improves the satisfaction degree of the patient so as to solve the technical problem that the special hand fixing device is lacked in the transradial artery and transnasal arteria intervention operation in the prior art.

As an alternative embodiment, the palm rest 1 includes a palm pad 11, a first telescopic rod 12 and a palm receiving portion 13, the first telescopic rod 12 can be extended or shortened, one end of the first telescopic rod 12 is inserted into the adjusting member 5 and the first telescopic rod 12 is rotatably connected with the adjusting member 5, one end of the first telescopic rod 12 is inserted into the first moving block 51 and the two are rotatably connected, in order to facilitate adjusting the inclination angle of the palm pad 11, the other end of the first telescopic rod 12 is rotatably connected with the end of the palm receiving portion 13 through a rotating shaft, the palm receiving portion 13 is located on the side of the first telescopic rod 12, or the end part of the first telescopic rod 12 is provided with a groove, the end part of the palm bearing part 13 is positioned in the groove, the palm cushion plate 11 is fixed on the first telescopic rod 12, the palm bearing part 13 can press the palm of the patient on the palm cushion plate 11, or the palm receiving part 13 can be used for the hand of the patient to hold when being rotated to be vertical to the palm cushion plate 11.

As an optional implementation mode, the detachable wrist pad 111 is arranged on the palm pad 11, and in a radial artery interventional operation, the wrist pad 111 is needed to relieve the pain of the wrist and bring comfort to the wrist; in the operation of interveneeing through the peru artery, need not use wrist cushion 111, can dismantle. The palm rest 11 is provided with two joints of the wrist rest 111 for adjusting the position of the wrist rest 111.

As an alternative embodiment, the elbow supporting portion 2 includes an elbow pad 21 and a second telescopic rod 22, the elbow pad 21 is fixedly connected to the second telescopic rod 22, the second telescopic rod 22 is inserted into the adjusting member 6, the second telescopic rod 22 is rotatably connected to the adjusting member 6, the second telescopic rod 22 is inserted into the swinging portion 63, and the second telescopic rod 22 is rotatably connected to the swinging portion 63, so as to facilitate the adjustment of the inclination angle of the elbow pad 21.

As an alternative embodiment, the elbow pad 21 is provided with a buffer layer, the buffer layer is of an arc structure to relieve the pain of the elbow of the patient, and the buffer layer is half wrapped around the elbow of the patient to limit the elbow movement of the patient.

As an alternative embodiment, the bracket 3 includes a rotating rod 31 and a fixed rod 32, the rotating rod 31 is rotatably connected to both ends of the fixed rod 32 through a rotating member 33, the rotating member 33 includes a fixed block 331 and a rotating block 332, the fixed block 331 is fixed to the fixed rod 32, the rotating block 332 is fixed to the rotating rod 31, the fixed block 331 is rotatably connected to the rotating block 332, the rotating rod 31 can rotate around the end of the fixed rod 32, and further change the inclination directions of both the palm rest portion 1 and the elbow rest portion 2, the free end of the fixed rod 32 can be inserted into the base 4, the fixed rod 32 can adjust the amount of insertion into the base 4, and further change the heights of the palm rest portion 1 and the elbow rest portion 2 from the bed surface, the rotating rod 31 is connected to the adjusting member 5, and the adjusting member 5 can move along the length direction of the rotating rod 31, the rotating rod 31 penetrates through the first moving block 51, and the, the fixed rod 32 is connected to the adjusting member 6, the adjusting member 6 can move along the length direction of the fixed rod 32, the fixed rod 32 penetrates through the second moving block 61, and the second moving block 61 can move along the length direction of the fixed rod 32.

As an alternative embodiment, the adjusting member 5 includes a first moving block 51 and a first knob 52, the rotating rod 31 passes through the first moving block 51, the first moving block 51 can move on the rotating rod 31, the first moving block 51 can also rotate relative to the rotating rod 31, the first knob 52 is in threaded connection with the first moving block 51, the first knob 52 can abut against the rotating rod 31, the first knob 52 is perpendicular to the rotating rod 31, and when an end surface of the first knob 52 abuts against a side surface of the rotating rod 31, the first moving block 51 cannot move and rotate on the rotating rod 31; when the end surface of the first knob 52 is separated from the side surface of the rotating rod 31, the first moving block 51 can move and rotate on the rotating rod 31, and the palm rest 1 is rotatably connected to the first moving block 51.

As an alternative embodiment, the adjusting member 6 includes a second moving block 61, a second knob 62 and a swinging portion 63, the fixed rod 32 passes through the second moving block 61, the second moving block 61 can move on the fixed rod 32, the second moving block 61 can also rotate relative to the fixed rod 32, the second knob 62 is in threaded connection with the second moving block 61, the second knob 62 can be abutted against the fixed rod 32, the second knob 62 is arranged perpendicular to the fixed rod 32, and when the end surface of the second knob 62 is abutted against the side surface of the fixed rod 32, the second moving block 61 cannot move and rotate on the fixed rod 32; when the end surface of the second knob 62 is separated from the side surface of the fixing rod 32, the second moving block 61 can move and rotate on the fixing rod 32, the second moving block 61 is rotatably connected with the swinging portion 63, and then the elbow supporting portion 2 can be driven to perform swinging motion, and the elbow supporting portion 2 is rotatably connected with the swinging portion 63.

As an alternative embodiment, the base 4 includes a third knob 41, a clamping member 42 and a fastening member 43, the fixing rod 32 penetrates through the clamping member 42, the clamping member 42 can move on the fixing rod 32, the third knob 41 is in threaded connection with the clamping member 42, the third knob 41 can be abutted against the fixing rod 32, the third knob 41 is arranged perpendicular to the fixing rod 32, when the end surface of the third knob 41 is abutted against the side surface of the fixing rod 32, the fixing rod 32 cannot move in the clamping member 42, and the insertion amount of the fixing rod 32 is limited; when the end surface of the third knob 41 is separated from the side surface of the fixing rod 32, the fixing rod 32 can move in the clamping piece 42, and the extending amount of the fixing rod 32 can be changed, the clamping piece 42 is in threaded connection with the fastening piece 43, and the clamping piece 42 can be clamped on the operating table through the fastening piece 43.

As an alternative embodiment, the fastening member 43 includes a fastening plate 431, a fourth knob 432 and a threaded rod 433, both ends of the threaded rod 433 are fixedly connected with the fastening plate 431 and the fourth knob 432 respectively, the threaded rod 433 passes through the clamping member 42 and the threaded rod 433 is in threaded connection with the clamping member 42, a clamping groove 421 is provided on the clamping member 42, the clamping groove 421 can be inserted into the operating bed, the fourth knob 432 is located outside the clamping member 42, the fastening plate 431 is located in the clamping groove 421 and the fastening plate 431 can clamp the clamping member 42 to the operating bed. By rotating the fourth knob 432 such that the fastening plate 431 moves in a direction approaching or departing from the operating table, clamping of the operating table by the base 4 or loosening of the operating table is achieved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An integrated hand fixing device for transradial and transnasal arteria nicotinovorans interventional operation, which is characterized by comprising a palm limiting part (1), an elbow supporting part (2), a bracket (3) and a base (4), wherein,

the palm limiting part (1) is connected with the support (3) through an adjusting piece (5), the adjusting piece (5) can move along the length direction of the support (3), the adjusting piece (5) and the palm limiting part (1) can rotate relatively, and the palm limiting part (1) is used for limiting the palm of a patient or holding the palm of the patient;

the elbow supporting part (2) is connected with the support (3) through an adjusting piece (6), the adjusting piece (6) can move along the length direction of the support (3), the adjusting piece (6) and the elbow supporting part (2) can rotate relatively, and the elbow supporting part (2) is used for supporting the elbow of the patient;

support (3) can change spacing portion of palm (1) with elbow supporting part (2) relative position between the two, support (3) with base (4) are connected just support (3) can move on base (4), base (4) can press from both sides on the operation table.

2. The radial and transnasal arteria interventional integrated hand fixation device of claim 1, it is characterized in that the palm limiting part (1) comprises a palm cushion plate (11), a first telescopic rod (12) and a palm bearing part (13), one end of the first telescopic rod (12) is inserted into the adjusting piece (5) and the first telescopic rod (12) is rotatably connected with the adjusting piece (5), the other end of the first telescopic rod (12) is rotationally connected with the end part of the palm bearing part (13) through a rotating shaft, the palm cushion plate (11) is fixed on the first telescopic rod (12), the palm bearing part (13) can press the palm of the patient on the palm cushion plate (11), or the palm bearing part (13) can be used for holding the hand of the patient when being rotated to be vertical to the palm cushion plate (11).

3. The radial and transnasal arteria interventional integrated hand fixation device according to claim 2, wherein the palm rest (11) is provided with a detachable wrist pad (111).

4. The integrated radial and transnasal arteria interventional surgical hand immobilization device according to claim 1, wherein the elbow support (2) comprises an elbow pad (21) and a second telescopic rod (22), the elbow pad (21) being fixedly connected with the second telescopic rod (22), the second telescopic rod (22) being inserted into the adjustment member (6) and the second telescopic rod (22) being rotatably connected with the adjustment member (6).

5. The radial and transnasal arteria interventional integrated hand fixation device according to claim 4, wherein a buffer layer is provided on the elbow pad (21).

6. The integrated hand fixing device for transradial and transnasal arteria arterians interventional surgery according to claim 1, wherein the support (3) comprises a rotating rod (31) and a fixing rod (32), the rotating rod (31) is rotatably connected with two ends of the fixing rod (32) through a rotating piece (33), the free end of the fixing rod (32) can be inserted into the base (4), the rotating rod (31) is connected with the adjusting piece (5) and the adjusting piece (5) can move along the length direction of the rotating rod (31), the fixing rod (32) is connected with the adjusting piece (6) and the adjusting piece (6) can move along the length direction of the fixing rod (32).

7. The integrated hand fixing device for transradial and transnasal arteria arterians interventional procedures according to claim 1, wherein the adjusting member (5) comprises a first moving block (51) and a first knob (52), the bracket (3) passes through the first moving block (51) and the first moving block (51) can move on the bracket (3), the first knob (52) is in threaded connection with the first moving block (51) and the first knob (52) can abut against the bracket (3), and the palm limiting part (1) is in rotational connection with the first moving block (51).

8. The integrated hand fixing device for transradial and transnasal arteria arterians interventional procedures according to claim 1, wherein the adjusting member (6) comprises a second moving block (61), a second knob (62) and a swinging portion (63), the support (3) passes through the second moving block (61) and the second moving block (61) can move on the support (3), the second knob (62) is in threaded connection with the second moving block (61) and the second knob (62) can abut against the support (3), the second moving block (61) is in rotational connection with the swinging portion (63), and the elbow supporting portion (2) is in rotational connection with the swinging portion (63).

9. The integrated radial and transnasal arteria interventional hand fixing device according to claim 1, wherein the base (4) comprises a third knob (41), a clamping member (42) and a fastening member (43), the support (3) penetrates through the clamping member (42) and the clamping member (42) is movable on the support (3), the third knob (41) is in threaded connection with the clamping member (42) and the third knob (41) is capable of abutting against the support (3), the clamping member (42) is in threaded connection with the fastening member (43) and the clamping member (42) is capable of clamping on the operating bed through the fastening member (43).

10. The integrated hand fixation device for transradial and transnasal arteria arterians intervention of claim 9, wherein the fastening member (43) comprises a fastening plate (431), a fourth knob (432) and a threaded rod (433), both ends of the threaded rod (433) are fixedly connected with the fastening plate (431) and the fourth knob (432), respectively, the threaded rod (433) passes through the clamping member (42) and the threaded rod (433) is in threaded connection with the clamping member (42), the fourth knob (432) is located outside the clamping member (42), the fastening plate (431) is located inside the clamping member (42) and the fastening plate (431) can clamp the clamping member (42) to the operating table.