Angle measuring mechanism for operating table backboard

Abstract

The present invention discloses a backboard angle measuring mechanism for an operating table, which comprises a hollow shaft (5) connected between a seat arm (1) and a backboard arm (10), a fixing assembly (2) connected to the seat arm (1), a clamping assembly (4) connected to the backboard arm (10), and a potentiometer (3) connected to the fixing assembly (2), wherein the potentiometer (3) comprises a measuring shaft (31) coaxial with the hollow shaft (5), and the clamping assembly (4) clamps the measuring shaft (31). The backboard angle measuring mechanism for an operating table of the present invention can use a flat-blade screwdriver to pass through the hollow shaft to rotate the measuring shaft, thereby conveniently adjusting the potentiometer; and the mechanism is installed on the outside of the seat arm and the backboard arm, and is convenient to operate and disassemble.

Description

Technical Field

[0001] The present invention relates to a medical operating table, in particular to an operating table backboard angle measuring mechanism. Background Art

[0002] The operating table is an essential aid used in hospital operating rooms for surgical procedures and examinations on various parts of the human body. Because the patient is anesthetized and immobile, the surgeon's desired positioning of the patient during surgery is controlled by the operating table's lift and rotation. The rotation angle of the backrest of existing operating tables is typically measured by a potentiometer.

[0003] like Figures 1 to 3 As shown, an operating table typically includes a seat and a backboard, wherein the seat is mounted on a seat arm 1, and the backboard is mounted on a backboard arm 10. The seat and backboard are connected by a rotating shaft 11, allowing them to rotate relative to each other. The backboard angle measurement mechanism in the prior art is typically installed inside the backboard arm 10 and the seat arm 1, and includes a wire fixing plate 12 mounted on the seat arm 1, a wire limiting bracket 13 mounted on the seat arm 1, a potentiometer fixing bracket 14 mounted on the backboard arm 10, a potentiometer 15 mounted on the potentiometer fixing bracket 14, a wire roller 16 connected to the potentiometer 15, and a wire 17 connected to the wire roller 16 and the wire fixing plate 12.

[0004] When the seat arm 1 and the backrest arm 10 rotate relative to each other, the pull wire 17 will be stretched or shortened, causing the potential in the potentiometer to change. The potential change can be converted into angle data, thereby realizing angle measurement.

[0005] The disadvantages of the above-mentioned angle measuring mechanism are that, first, it is installed inside the seat arm 1 and the backboard arm 10, and the installation space is small, which is inconvenient to operate, resulting in time-consuming installation and inconvenient maintenance; secondly, the angle measuring mechanism is difficult to adjust to zero position (the backboard and the seat are horizontal, and the angle measured by the potentiometer should be zero at this time). Due to installation errors or aging and deformation of the pull rope, the zero position will deviate. At this time, the control of the backboard angle is inaccurate, which is not conducive to the smooth progress of the operation. Summary of the Invention

[0006] The purpose of the present invention is to address the above-mentioned defects in the prior art and provide a zero position measuring mechanism for the backboard of an operating table, which can conveniently adjust the zero position of the backboard relative to the seat board.

[0007] To achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solution: a surgical table backboard angle measuring mechanism, which includes a hollow shaft connected between the seat arm and the backboard arm, a fixing assembly connected to the seat arm, a clamping assembly connected to the backboard arm, and a potentiometer connected to the fixing assembly, the potentiometer includes a measuring shaft coaxial with the hollow shaft, and the clamping assembly clamps the measuring shaft.

[0008] In addition, the present invention also proposes the following subsidiary technical solutions:

[0009] The measuring shaft extends into the hollow shaft.

[0010] The fixing assembly includes a spacer block connected to the seat arm, a mounting gasket connected to the spacer block, and a nut for locking the potentiometer on the mounting gasket.

[0011] The mounting gasket is provided with a through hole for the measuring shaft to pass through.

[0012] The potentiometer is provided with a boss, and the mounting gasket further comprises a stop hole for the boss to pass through.

[0013] The clamping assembly includes a clamping block installed on the backplane arm and a clamping screw connected to the clamping block. The clamping block includes a connecting portion and a first clamping arm and a second clamping arm connected to the connecting portion. The clamping screw is connected to the first clamping arm and the second clamping arm.

[0014] The clamping block further includes a clamping gap separating the first clamping arm and the second clamping arm.

[0015] The first clamping arm and the second clamping arm cooperate to form a clamping hole for clamping the measuring shaft.

[0016] The fixing assembly further includes a protective cover which is arranged on the outside of the potentiometer.

[0017] The hollow shaft is provided with a through hole, and the operating table back plate angle measuring mechanism further comprises a dustproof bolt screwed to one end of the through hole.

[0018] Compared with the existing technology, the advantages of the present invention are: the operating table backboard angle measurement mechanism of the present invention can use a flat-blade screwdriver to pass through the hollow shaft to rotate the measuring shaft, thereby conveniently adjusting the potentiometer; and this mechanism is installed on the outside of the seat arm and the backboard arm, which is easy to operate and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the connection between the seat arm and the backboard arm in the prior art.

[0020] Figure 2It is a schematic diagram of the position of the angle measurement mechanism in the prior art.

[0021] Figure 3 It is a structural diagram of an angle measurement mechanism in the prior art.

[0022] Figure 4 It is a schematic diagram of the position of the angle measuring mechanism in the present invention.

[0023] Figure 5 It is a structural schematic diagram of the hollow shaft of the present invention.

[0024] Figure 6 It is a structural schematic diagram of the angle measuring mechanism in the present invention.

[0025] Figure 7 It is a schematic diagram of the connection between the potentiometer and the mounting gasket in the present invention.

[0026] Figure 8 It is a structural schematic diagram of the potentiometer in the present invention.

[0027] Figure 9 This is a schematic diagram of the structure of the installation gasket in the present invention

[0028] Figure 10 It is a connection diagram of the protective cover in the present invention.

[0029] Figure 11 It is a structural schematic diagram of the clamping assembly in the present invention. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described in detail below in conjunction with preferred embodiments and the accompanying drawings.

[0031] like Figure 4 As shown, a surgical table backboard angle measuring mechanism corresponding to a preferred embodiment of the present invention includes a potentiometer fixing assembly 2 connected to the seat arm 1, a potentiometer clamping assembly 4 connected to the backboard arm 10, a hollow shaft 5 connected between the seat arm 1 and the backboard arm 10, and a potentiometer 3 fixed by the fixing assembly 2.

[0032] like Figure 5 As shown, the hollow shaft 5 is equivalent to the rotating shaft 11 mentioned in the background technology. The backrest arm 10 can rotate relative to the seat arm 1 around the hollow shaft 5. A through hole 50 is provided at the center of the hollow shaft 5. One end of the through hole 50 is provided with a thread, and a dustproof bolt 51 is threadedly connected to the through hole 50 to prevent foreign matter and dust from entering the through hole 50.

[0033] like Figure 6 and Figure 7As shown, the fixing assembly 2 includes a spacer block 20 connected to the side of the seat arm 1 , a mounting washer 21 connected to the spacer block 20 , and a nut 22 for locking the potentiometer 3 on the mounting washer 21 .

[0034] Further references Figure 8 and Figure 9 The potentiometer 3 includes a housing 30, a threaded sleeve 33 connected to the housing 30, a measuring shaft 31 extending from the sleeve 33, and a boss 32 connected to the housing 30. The mounting plate 21 is provided with a through-hole 23 for the measuring shaft 31 and a retaining hole 24 for the boss 32. During installation, the measuring shaft 31 and boss 32 of the potentiometer 3 are first inserted into the through-hole 23 and retaining hole 24 of the mounting plate 21, respectively. The nut 22 is then screwed onto the threaded sleeve 33. The boss 32 prevents the potentiometer 3 and the mounting plate 21 from rotating about the measuring shaft 31.

[0035] Two screws 25 (see Figure 6 ) passes through the mounting gasket 21 and the spacer block 20 and is connected to the side of the seat arm 1, and the spacer block 20 and the mounting gasket 21 are connected to the seat arm 1.

[0036] When the fixing assembly 2 is installed, the measuring shaft 31 of the potentiometer 3 is coaxial with the hollow shaft 5 . Preferably, the measuring shaft 31 extends into the through hole 50 .

[0037] A slotted groove 310 is provided on the end surface of the measuring shaft 31 . After removing the dustproof bolt 51 , a slotted screwdriver can be inserted into the through hole 50 to rotate the measuring shaft 31 , thereby adjusting the potentiometer 3 .

[0038] like Figure 10 As shown, the fixing assembly 2 further includes a protective cover 26 covering the potentiometer 3 and the spacer block 20 . The protective cover 26 is connected to the top surface of the spacer block 20 via two countersunk screws 27 .

[0039] like Figure 11 As shown, the clamping assembly 4 includes a clamping block 40 connected to the side of the backplane arm 10 and a clamping screw 41 connected to the clamping block 40 .

[0040] The clamping block 40 is provided with a long connecting portion 42, a first clamping arm 43 connected to the connecting portion 42, and a second clamping arm 44 connected to the connecting portion 42. The connecting portion 42 is fixed by two bolts 420 (see FIG. Figure 6 ) is locked on the side of the backplane arm 10.

[0041] The first clamping arm 43 and the second clamping arm 44 are symmetrical to each other, forming a long strip of clamping space 45 between them. The first clamping arm 43 has a countersunk hole 46, and the second clamping arm 44 has a threaded hole 47. The clamping screw 41 passes through the countersunk hole 46 and is connected to the threaded hole 47. Tightening the clamping screw 41 drives the first clamping arm 43 and the second clamping arm 44 closer together, thereby clamping the object therebetween.

[0042] The ends of the first clamping arm 43 and the second clamping arm 44 cooperate to form a clamping hole 48. When the clamping block 40 is mounted on the backplate arm 10, the clamping hole 48 is coaxial with the hollow shaft 5. The clamping hole 48 cooperates with the measuring shaft 31 for passing through the measuring shaft 31. After tightening the clamping screw 41, the first clamping arm 43 and the second clamping arm 44 can clamp the measuring shaft 31.

[0043] During operation, when the seat arm 1 and backrest arm 10 rotate relative to each other, the measuring shaft 31, held by the clamping block 40, rotates together, causing the internal resistance of the potentiometer 3 to change, thereby enabling angle measurement. To adjust the zero position, first loosen the clamping screw 41. With the backrest and seat flush, use a flat-blade screwdriver through the hollow shaft 5 to rotate the measuring shaft 31 to find the zero position. Once the zero position is found, tighten the clamping screw 41.

[0044] The operating table backboard angle measuring mechanism of the present invention can use a flat-blade screwdriver to pass through the hollow shaft to rotate the measuring shaft, thereby conveniently adjusting the potentiometer; and this mechanism is installed on the outside of the seat arm and the backboard arm, which is easy to operate and disassemble.

[0045] It should be noted that the above preferred embodiments are merely illustrative of the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit and essence of the present invention are intended to be encompassed within the scope of protection of the present invention.

Claims

1. An operating table backboard angle measuring mechanism, characterized in that: It comprises a hollow shaft (5) connected between a seat plate arm (1) and a back plate arm (10), a fixing assembly (2) connected to the seat plate arm (1), a clamping assembly (4) connected to the back plate arm (10), and a potentiometer (3) connected to the fixing assembly (2); the potentiometer (3) comprises a measuring shaft (31) coaxial with the hollow shaft (5); the clamping assembly (4) clamps the measuring shaft (31); the measuring shaft (31) extends into the hollow shaft (5); the hollow shaft (5) is provided with a through hole (50); the operating table back plate angle measuring mechanism further comprises a dustproof bolt (51) screwed to one end of the through hole (50); The end surface of the measuring shaft (31) is provided with a slotted groove (310); after removing the dustproof bolt (51), a slotted screwdriver is inserted into the through hole (50) to rotate the measuring shaft (31), thereby adjusting the potentiometer (3); The clamping assembly (4) comprises a clamping block (40) mounted on the back plate arm (10) and a clamping screw (41) connected to the clamping block (40); the clamping block (40) comprises a connecting portion (42) and a first clamping arm (43) and a second clamping arm (44) connected to the connecting portion (42); the clamping screw (41) is connected to the first clamping arm (43) and the second clamping arm (44); The clamp block (40) further comprises a clamping gap (45) separating the first clamping arm (43) and the second clamping arm (44); The first clamping arm (43) and the second clamping arm (44) cooperate to form a clamping hole (48) for clamping the measuring shaft (31).

2. The operating table backboard angle measuring mechanism according to claim 1, characterized in that: The fixing assembly (2) comprises a spacer block (20) connected to the seat arm (1), a mounting gasket (21) connected to the spacer block (20), and a nut (22) for locking the potentiometer (3) on the mounting gasket (21).

3. The operating table backboard angle measuring mechanism according to claim 2, characterized in that: The mounting gasket (21) is provided with a through hole (23) for the measuring shaft (31) to pass through.

4. The operating table backboard angle measuring mechanism according to claim 3, characterized in that: The potentiometer (3) is provided with a boss (32), and the mounting gasket (21) further comprises a stop hole (24) for the boss (32) to pass through.

5. The operating table backboard angle measuring mechanism according to claim 1, characterized in that: The fixing assembly (2) further comprises a protective cover (26) which is arranged on the outside of the potentiometer (3).

Images