Disclosure of Invention
In order to overcome the defects that the surgical patient keeps the arm from moving, the surgical patient is easy to fatigue and the surgical patient needs to do other things, the invention has the technical problems that: to provide an arm fixing cuff for a surgical patient which can make the surgical patient feel more comfortable and can facilitate the surgical patient to do other things.
An arm fixing sleeve for surgical patients comprises a first arc-shaped plate, a first slide rail, first slide blocks, a first elastic band, a rotating shaft, a second arc-shaped plate, a second slide rail, a second slide block, a second elastic band, a chuck, a guide sleeve, a guide rod, a clamping rod, a press rod, a first spring and a cushion, wherein the front side and the rear side of the upper part of the first arc-shaped plate are respectively bolted with the first slide rail with a guiding function, the two first slide rails are respectively provided with two n-shaped first slide blocks in a sliding way, the tops of the two first slide blocks on the front side are respectively connected with the first elastic band, the rear ends of the two first elastic bands are respectively connected with the two first slide blocks on the rear side, the rotating shaft is rotatably connected with the right lower part of the first arc-shaped plate, the rotating shaft is provided with the second arc-shaped plate and the chuck, the chuck is positioned in front of the second arc-shaped plate, the two second slide rails are respectively arranged on the front side and the rear side of the left part of the second arc, all be connected with the second elastic band on two second sliders of front side, two second elastic band rear ends are connected with two second sliders of rear side respectively, second arc right side lower part rigid coupling has the guide pin bushing that plays the guide effect, be equipped with the guide arm that the shape is L shape in the guide pin bushing, the left side rigid coupling of the inboard bottom of guide arm has the kelly, kelly and chuck cooperation, the depression bar rigid coupling is on the guide arm top, around having first spring on the guide arm, first spring one end and compression linkage, the first spring other end is connected with the guide pin bushing, first arc and second arc inboard are connected with the cushion.
Further, the clamping device comprises a clamping mechanism, the clamping mechanism comprises a sliding sleeve, sliding rods, a pressing plate, racks, clamping teeth, a cam, a rocker and a second spring, the sliding sleeve is fixedly connected to the left side and the right side of the upper portion of the front side of the first arc-shaped plate, the sliding sleeve is also fixedly connected to the upper side and the lower side of the middle portion of the front side of the second arc-shaped plate, the sliding rods are arranged in the four sliding sleeves, the right end of the upper sliding rod is connected with the pressing plate, the top end of the lower sliding rod is also connected with the racks, the second spring is fixedly connected between the racks and the sliding sleeve and sleeved on the sliding rods, the bottoms of the two first sliding blocks on the front side are both connected with the clamping teeth, the right sides of the two second sliding blocks on the front side are also connected with the clamping teeth, the clamping teeth are matched with the racks, the cam is also installed in second arc front side middle part rotary type, and two cams contact with two clamp plates respectively, and the equal rigid coupling in two cam front sides has the rocker.
Further, still including riser, shell fragment, arc piece, sheet rubber and friction pulley, first arc front side right side lower part rigid coupling has the riser, and the riser right side is equipped with two shell fragments, and the shell fragment right-hand member is connected with the arc piece, and the arc piece right side is connected with the sheet rubber that is used for increasing frictional force, and the friction pulley rigid coupling is anterior in the pivot, and the friction pulley is located between second arc and the chuck, friction pulley and sheet rubber contact.
Further, the hanging strip hook comprises a hanging strip, a first hook and a second hook, the top of the second arc-shaped plate is fixedly connected with the hanging strip and the second hook, the second hook is located in the front of the hanging strip, the bottom end of the hanging strip is connected to the left side of the top of the first arc-shaped plate, and the front side of the hanging strip on the left side of the top of the first arc-shaped plate is connected with the first hook.
The doctor firstly moves the second slide block upwards to separate the second slide block from the second slide rail, takes the second elastic band down, then moves the first slide block leftwards to separate the first slide block from the first slide rail, takes the first elastic band down, the surgical patient can place the upper arm in the second arc-shaped plate, then places the lower arm in the first arc-shaped plate, the soft pad is contacted with the upper arm and the lower arm of the surgical patient, the upper arm and the lower arm of the surgical patient are prevented from being hurt by the second arc-shaped plate and the first arc-shaped plate, then the doctor places the first slide block back on the first slide rail, then places the second slide block back on the second slide rail, the doctor can move the first slide block leftwards or rightwards to drive the two first elastic bands to move leftwards or rightwards to adjust the distance between the two first elastic bands, when the distance is adjusted to an appropriate distance, the doctor stops moving the first slide block, then moves the second slide block upwards or downwards, drive the second elastic webbing and make progress or move down, carry out the distance between two second elastic webbing, when adjusting suitable distance, the doctor stops to stir the second slider, first elastic webbing and second elastic webbing can be fixed with surgery patient's arm, then need not surgery patient oneself and keep the arm motionless, thereby can let surgery patient relax more, and can make things convenient for surgery patient to do other things, after surgery patient's arm is fixed, the doctor presses down the depression bar, drive the kelly downstream through the guide arm, make kelly and chuck break away from, first spring is compressed this moment, the doctor upwards or the first arc of downswing again, adjust the angle of first arc. When adjusting to suitable angle, the doctor loosens the depression bar, and the depression bar upwards resets under the effect of first spring, and the kelly upwards resets thereupon and blocks into the chuck in, and is fixed with the chuck to can be fixed first arc.
When the distance between the two first elastic belts needs to be adjusted, a doctor rotates the rocker at the lower part clockwise to drive the cam at the lower part to rotate clockwise, when the farthest end of the cam at the lower part is contacted with the pressing plate at the lower part, the pressing plate at the lower part is driven to move downwards, the rack at the lower part is driven to move downwards through the sliding rod at the lower part, the second spring at the lower part is stretched, when the cam at the lower part rotates clockwise to the groove at the lower part, the doctor stops rotating the rocker at the lower part, the rack at the lower part is separated from the latch at the lower part, the two first sliding blocks at the front side are loosened, the doctor can stir the first sliding blocks leftwards or rightwards to adjust the distance between the two first elastic belts, after the adjustment is completed, the doctor rotates the rocker at the lower part anticlockwise to drive the cam at the lower part to rotate anticlockwise, the rack, the doctor stops rotating the rocker below to can fix two first sliders of front side, avoid first elastic band aversion. When the distance between the two second elastic belts needs to be adjusted, a doctor rotates the upper rocker clockwise to drive the upper cam to rotate clockwise, when the farthest end of the upper cam is in contact with the upper pressing plate, the upper pressing plate is driven to move rightwards, the upper rack is driven to move rightwards through the upper sliding rod, the upper second spring is stretched, when the upper cam rotates clockwise to the upper groove, the doctor stops rotating the upper rocker, the upper rack is separated from the upper latch, the two second sliding blocks on the front side are loosened, the doctor can dial the first sliding block upwards or downwards to adjust the distance between the two second elastic belts, after the adjustment is completed, the doctor rotates the upper rocker anticlockwise to drive the upper cam to rotate anticlockwise, the upper rack resets leftwards under the action of the upper second spring, when the upper rack resets leftwards and is matched with the upper latch, the doctor stops rotating the rocker above the second elastic band, so that the two second sliding blocks on the front side can be fixed, and the second elastic band is prevented from shifting.
The contact of the rubber sheet and the friction wheel can increase the friction force, and the rubber sheet always contacts with the friction wheel under the action of the elastic sheet, so that when the clamping rod is separated from the chuck, the downward swinging speed of the first arc-shaped plate cannot be too fast, and the lower arm of a surgical patient can be prevented from being injured secondarily.
The doctor can hang the suspender on surgery patient's neck, then winds the one end of suspender on first couple, again winds the other end of suspender on the second couple, adjusts the length of suspender to can be applicable to different surgery patient, after adjusting, stop to wind the suspender on first couple and second couple, the suspender can hold first arc and second arc, makes the relaxation that surgery patient can be more.
The invention has the following advantages: the arm fixing device can fix the arm of the surgical patient through the first elastic belt and the second elastic belt, so that the surgical patient does not need to keep the arm from moving, the surgical patient can feel easier, and the surgical patient can conveniently do other things; the first elastic belt and the second elastic belt can be prevented from shifting through the clamping mechanism; the rubber sheet is contacted with the friction wheel, so that the friction force can be increased, and the lower arm of a surgical patient is prevented from being secondarily injured; the first arc and the second arc can be supported to the suspender for surgery patient can be light more.
Detailed Description
The following further describes the technical solution with reference to specific embodiments, and it should be noted that: the words upper, lower, left, right, and the like used herein to indicate orientation are merely for the location of the illustrated structure in the corresponding figures. The serial numbers of the parts are themselves numbered herein, for example: first, second, etc. are used solely to distinguish one from another as to objects described herein, and do not have any sequential or technical meaning. The application states that: the connection and coupling, unless otherwise indicated, include both direct and indirect connections (couplings).
Example 1
An arm fixing sleeve for surgical patients is disclosed, as shown in fig. 1-3, comprising a first arc-shaped plate 1, a first slide rail 2, a first slide block 3, a first elastic band 4, a rotating shaft 5, a second arc-shaped plate 6, a second slide rail 7, a second slide block 8, a second elastic band 9, a chuck 10, a guide sleeve 11, a guide rod 12, a clamping rod 13, a press rod 14, a first spring 15 and a cushion 16, wherein the front side and the rear side of the upper part of the first arc-shaped plate 1 are respectively bolted with the first slide rail 2 with guiding function, two first slide blocks 3 with n-shaped shapes are respectively arranged on the two first slide rails 2 in a sliding way, the tops of the two first slide blocks 3 on the front side are respectively connected with the first elastic band 4, the rear ends of the two first elastic bands 4 are respectively connected with the two first slide blocks 3 on the rear side, the rotating shaft 5 is rotatably connected with the lower right part of the first chuck 1, the second arc-shaped plate 6 and the second arc-shaped plate 10 are arranged on the, the two second slide rails 7 are respectively arranged on the front side and the rear side of the left part of the second arc-shaped plate 6, two second slide blocks 8 in n shapes are arranged on the two second slide rails 7 in a sliding mode, a second elastic band 9 is connected to the two second slide blocks 8 on the front side, the rear ends of the two second elastic bands 9 are respectively connected with the two second slide blocks 8 on the rear side, a guide sleeve 11 with a guiding function is fixedly connected to the lower portion of the right side of the second arc-shaped plate 6, a guide rod 12 in an L shape is arranged in the guide sleeve 11, a clamping rod 13 is fixedly connected to the left side of the inner bottom of the guide rod 12, the clamping rod 13 is matched with a chuck 10, a pressing rod 14 is fixedly connected to the top end of the guide rod 12, a first spring 15 is wound on the guide rod 12, one end of the first spring 15 is connected with the pressing rod 14, the other end of the first spring 15 is connected with the guide.
Example 2
An arm fixing sleeve for surgical patients is disclosed, as shown in fig. 1-3, comprising a first arc-shaped plate 1, a first slide rail 2, a first slide block 3, a first elastic band 4, a rotating shaft 5, a second arc-shaped plate 6, a second slide rail 7, a second slide block 8, a second elastic band 9, a chuck 10, a guide sleeve 11, a guide rod 12, a clamping rod 13, a press rod 14, a first spring 15 and a cushion 16, wherein the front side and the rear side of the upper part of the first arc-shaped plate 1 are respectively bolted with the first slide rail 2 with guiding function, two first slide blocks 3 with n-shaped shapes are respectively arranged on the two first slide rails 2 in a sliding way, the tops of the two first slide blocks 3 on the front side are respectively connected with the first elastic band 4, the rear ends of the two first elastic bands 4 are respectively connected with the two first slide blocks 3 on the rear side, the rotating shaft 5 is rotatably connected with the lower right part of the first chuck 1, the second arc-shaped plate 6 and the second arc-shaped plate 10 are arranged on the, the two second slide rails 7 are respectively arranged on the front side and the rear side of the left part of the second arc-shaped plate 6, two second slide blocks 8 in n shapes are arranged on the two second slide rails 7 in a sliding mode, a second elastic band 9 is connected to the two second slide blocks 8 on the front side, the rear ends of the two second elastic bands 9 are respectively connected with the two second slide blocks 8 on the rear side, a guide sleeve 11 with a guiding function is fixedly connected to the lower portion of the right side of the second arc-shaped plate 6, a guide rod 12 in an L shape is arranged in the guide sleeve 11, a clamping rod 13 is fixedly connected to the left side of the inner bottom of the guide rod 12, the clamping rod 13 is matched with a chuck 10, a pressing rod 14 is fixedly connected to the top end of the guide rod 12, a first spring 15 is wound on the guide rod 12, one end of the first spring 15 is connected with the pressing rod 14, the other end of the first spring 15 is connected with the guide.
The clamping mechanism 17 is further included, the clamping mechanism 17 includes sliding sleeves 171, sliding rods 172, pressing plates 173, racks 175, latches 176, cams 177, rockers 178 and second springs 179, the sliding sleeves 171 are fixedly connected to the left and right sides of the upper portion of the front side of the first arc-shaped plate 1, the sliding sleeves 171 are also fixedly connected to the upper and lower sides of the middle portion of the front side of the second arc-shaped plate 6, the sliding rods 172 are disposed in the four sliding sleeves 171, the pressing plates 173 are connected to the right ends of the upper sliding rods 172, the pressing plates 173 are also connected to the top ends of the lower sliding rods 172, grooves 174 are formed in the middle portions of the left sides of the upper pressing plates 173, the grooves 174 are also formed in the middle portions of the tops of the lower pressing plates 173, the racks 175 are connected to the left ends of the upper sliding rods 172, the racks 175 are also connected to the top ends of the lower sliding rods 172, second springs 179 are fixedly connected between the racks 175 and the sliding sleeves 171, the second springs 179, latch 176 and rack 175 cooperation, cam 177 is installed to the middle rotary type in first arc 1 front side upper portion, and cam 177 is also installed to 6 front side middle parts of second arc in the rotary type, and two cams 177 contact with two clamp plates 173 respectively, and the equal rigid coupling in two cam 177 front sides has rocker 178.
Example 3
An arm fixing sleeve for surgical patients is disclosed, as shown in fig. 1-3, comprising a first arc-shaped plate 1, a first slide rail 2, a first slide block 3, a first elastic band 4, a rotating shaft 5, a second arc-shaped plate 6, a second slide rail 7, a second slide block 8, a second elastic band 9, a chuck 10, a guide sleeve 11, a guide rod 12, a clamping rod 13, a press rod 14, a first spring 15 and a cushion 16, wherein the front side and the rear side of the upper part of the first arc-shaped plate 1 are respectively bolted with the first slide rail 2 with guiding function, two first slide blocks 3 with n-shaped shapes are respectively arranged on the two first slide rails 2 in a sliding way, the tops of the two first slide blocks 3 on the front side are respectively connected with the first elastic band 4, the rear ends of the two first elastic bands 4 are respectively connected with the two first slide blocks 3 on the rear side, the rotating shaft 5 is rotatably connected with the lower right part of the first chuck 1, the second arc-shaped plate 6 and the second arc-shaped plate 10 are arranged on the, the two second slide rails 7 are respectively arranged on the front side and the rear side of the left part of the second arc-shaped plate 6, two second slide blocks 8 in n shapes are arranged on the two second slide rails 7 in a sliding mode, a second elastic band 9 is connected to the two second slide blocks 8 on the front side, the rear ends of the two second elastic bands 9 are respectively connected with the two second slide blocks 8 on the rear side, a guide sleeve 11 with a guiding function is fixedly connected to the lower portion of the right side of the second arc-shaped plate 6, a guide rod 12 in an L shape is arranged in the guide sleeve 11, a clamping rod 13 is fixedly connected to the left side of the inner bottom of the guide rod 12, the clamping rod 13 is matched with a chuck 10, a pressing rod 14 is fixedly connected to the top end of the guide rod 12, a first spring 15 is wound on the guide rod 12, one end of the first spring 15 is connected with the pressing rod 14, the other end of the first spring 15 is connected with the guide.
The clamping mechanism 17 is further included, the clamping mechanism 17 includes sliding sleeves 171, sliding rods 172, pressing plates 173, racks 175, latches 176, cams 177, rockers 178 and second springs 179, the sliding sleeves 171 are fixedly connected to the left and right sides of the upper portion of the front side of the first arc-shaped plate 1, the sliding sleeves 171 are also fixedly connected to the upper and lower sides of the middle portion of the front side of the second arc-shaped plate 6, the sliding rods 172 are disposed in the four sliding sleeves 171, the pressing plates 173 are connected to the right ends of the upper sliding rods 172, the pressing plates 173 are also connected to the top ends of the lower sliding rods 172, grooves 174 are formed in the middle portions of the left sides of the upper pressing plates 173, the grooves 174 are also formed in the middle portions of the tops of the lower pressing plates 173, the racks 175 are connected to the left ends of the upper sliding rods 172, the racks 175 are also connected to the top ends of the lower sliding rods 172, second springs 179 are fixedly connected between the racks 175 and the sliding sleeves 171, the second springs 179, latch 176 and rack 175 cooperation, cam 177 is installed to the middle rotary type in first arc 1 front side upper portion, and cam 177 is also installed to 6 front side middle parts of second arc in the rotary type, and two cams 177 contact with two clamp plates 173 respectively, and the equal rigid coupling in two cam 177 front sides has rocker 178.
Still including riser 18, shell fragment 19, arc piece 20, sheet rubber 21 and friction pulley 22, 1 front side right side lower part rigid coupling of first arc has riser 18, and riser 18 right side is equipped with two shell fragments 19, and 19 right-hand members of shell fragment are connected with arc piece 20, and 20 right sides of arc pieces are connected with the sheet rubber 21 that is used for increasing frictional force, and friction pulley 22 rigid coupling is anterior in pivot 5, and friction pulley 22 is located between second arc 6 and chuck 10, friction pulley 22 and sheet rubber 21 contact.
Example 4
An arm fixing sleeve for surgical patients is disclosed, as shown in fig. 1-3, comprising a first arc-shaped plate 1, a first slide rail 2, a first slide block 3, a first elastic band 4, a rotating shaft 5, a second arc-shaped plate 6, a second slide rail 7, a second slide block 8, a second elastic band 9, a chuck 10, a guide sleeve 11, a guide rod 12, a clamping rod 13, a press rod 14, a first spring 15 and a cushion 16, wherein the front side and the rear side of the upper part of the first arc-shaped plate 1 are respectively bolted with the first slide rail 2 with guiding function, two first slide blocks 3 with n-shaped shapes are respectively arranged on the two first slide rails 2 in a sliding way, the tops of the two first slide blocks 3 on the front side are respectively connected with the first elastic band 4, the rear ends of the two first elastic bands 4 are respectively connected with the two first slide blocks 3 on the rear side, the rotating shaft 5 is rotatably connected with the lower right part of the first chuck 1, the second arc-shaped plate 6 and the second arc-shaped plate 10 are arranged on the, the two second slide rails 7 are respectively arranged on the front side and the rear side of the left part of the second arc-shaped plate 6, two second slide blocks 8 in n shapes are arranged on the two second slide rails 7 in a sliding mode, a second elastic band 9 is connected to the two second slide blocks 8 on the front side, the rear ends of the two second elastic bands 9 are respectively connected with the two second slide blocks 8 on the rear side, a guide sleeve 11 with a guiding function is fixedly connected to the lower portion of the right side of the second arc-shaped plate 6, a guide rod 12 in an L shape is arranged in the guide sleeve 11, a clamping rod 13 is fixedly connected to the left side of the inner bottom of the guide rod 12, the clamping rod 13 is matched with a chuck 10, a pressing rod 14 is fixedly connected to the top end of the guide rod 12, a first spring 15 is wound on the guide rod 12, one end of the first spring 15 is connected with the pressing rod 14, the other end of the first spring 15 is connected with the guide.
The clamping mechanism 17 is further included, the clamping mechanism 17 includes sliding sleeves 171, sliding rods 172, pressing plates 173, racks 175, latches 176, cams 177, rockers 178 and second springs 179, the sliding sleeves 171 are fixedly connected to the left and right sides of the upper portion of the front side of the first arc-shaped plate 1, the sliding sleeves 171 are also fixedly connected to the upper and lower sides of the middle portion of the front side of the second arc-shaped plate 6, the sliding rods 172 are disposed in the four sliding sleeves 171, the pressing plates 173 are connected to the right ends of the upper sliding rods 172, the pressing plates 173 are also connected to the top ends of the lower sliding rods 172, grooves 174 are formed in the middle portions of the left sides of the upper pressing plates 173, the grooves 174 are also formed in the middle portions of the tops of the lower pressing plates 173, the racks 175 are connected to the left ends of the upper sliding rods 172, the racks 175 are also connected to the top ends of the lower sliding rods 172, second springs 179 are fixedly connected between the racks 175 and the sliding sleeves 171, the second springs 179, latch 176 and rack 175 cooperation, cam 177 is installed to the middle rotary type in first arc 1 front side upper portion, and cam 177 is also installed to 6 front side middle parts of second arc in the rotary type, and two cams 177 contact with two clamp plates 173 respectively, and the equal rigid coupling in two cam 177 front sides has rocker 178.
Still including riser 18, shell fragment 19, arc piece 20, sheet rubber 21 and friction pulley 22, 1 front side right side lower part rigid coupling of first arc has riser 18, and riser 18 right side is equipped with two shell fragments 19, and 19 right-hand members of shell fragment are connected with arc piece 20, and 20 right sides of arc pieces are connected with the sheet rubber 21 that is used for increasing frictional force, and friction pulley 22 rigid coupling is anterior in pivot 5, and friction pulley 22 is located between second arc 6 and chuck 10, friction pulley 22 and sheet rubber 21 contact.
Still including suspender 23, first couple 24 and second couple 25, 6 top rigid couplings of second arc have suspender 23 and second couple 25, and second couple 25 is located suspender 23 the place ahead, and suspender 23 bottom is connected on the left side of 1 top of first arc, and the left suspender 23 front side in 1 top of first arc is connected with first couple 24.
The doctor firstly dials the second slide block 8 upwards to separate the second slide block 8 from the second slide rail 7, takes the second elastic band 9 down, then dials the first slide block 3 leftwards to separate the first slide block 3 from the first slide rail 2, takes the first elastic band 4 down, the surgical patient can put the upper arm in the second arc-shaped plate 6, then puts the lower arm in the first arc-shaped plate 1, the soft pad 16 is contacted with the upper arm and the lower arm of the surgical patient, so as to avoid the upper arm and the lower arm of the surgical patient from being hurt by the second arc-shaped plate 6 and the first arc-shaped plate 1, then the doctor puts the first slide block 3 back on the first slide rail 2, then puts the second slide block 8 back on the second slide rail 7, the doctor can dial the first slide block 3 leftwards or rightwards to drive the two first elastic bands 4 leftwards or rightwards to adjust the distance between the two first elastic bands 4, when adjusting to a proper distance, the doctor stops dialing the first slide block 3, then stir second slider 8 upwards or downwards, drive second elastic webbing 9 upwards or downwards and move, carry out the distance between two second elastic webbing 9, when adjusting to suitable distance, the doctor stops to stir second slider 8, first elastic webbing 4 and second elastic webbing 9 can be fixed with surgery patient's arm, then need not surgery patient oneself and keep the arm not to touch, thereby can let surgery patient relax, and can make things convenient for surgery patient to do other things, after surgery patient's arm is fixed, the doctor pushes down depression bar 14, drive kelly 13 through guide arm 12 and move downwards, make kelly 13 and chuck 10 break away from, first spring 15 is compressed this moment, the doctor upwards or swings first arc 1 downwards again, adjust the angle of first arc 1. When the angle is adjusted to a proper angle, the doctor loosens the pressing rod 14, the pressing rod 14 is reset upwards under the action of the first spring 15, the clamping rod 13 is reset upwards and clamped into the chuck 10, the chuck 10 is fixed, and therefore the first arc-shaped plate 1 can be fixed.
When the distance between the two first elastic belts 4 needs to be adjusted, the doctor rotates the rocker 178 at the lower part clockwise to drive the cam 177 at the lower part to rotate clockwise, when the farthest end of the cam 177 at the lower part contacts with the pressing plate 173 at the lower part, the pressing plate 173 at the lower part is driven to move downwards, the sliding rod 172 at the lower part drives the rack 175 at the lower part to move downwards, the second spring 179 at the lower part is stretched, when the cam 177 at the lower part rotates clockwise to the groove 174 at the lower part, the doctor stops rotating the rocker 178 at the lower part, at the moment, the rack 175 at the lower part is separated from the latch 176 at the lower part, the two first sliding blocks 3 at the front side are loosened, the doctor can stir the first sliding blocks 3 leftwards or rightwards to adjust the distance between the two first elastic belts 4, after the adjustment, the doctor rotates the rocker 178 at the lower part anticlockwise, the lower rack 175 is reset upward, and when the lower rack 175 is reset upward and is matched with the lower latch 176, the doctor stops rotating the lower rocker 178, so that the two first sliding blocks 3 on the front side can be fixed, and the first elastic belt 4 is prevented from shifting. When the distance between the two second elastic belts 9 needs to be adjusted, the doctor rotates the upper rocker 178 clockwise to drive the upper cam 177 to rotate clockwise, when the farthest end of the upper cam 177 contacts with the upper pressing plate 173, the upper pressing plate 173 is driven to move rightwards, the upper rack 175 is driven to move rightwards through the upper sliding rod 172, the upper second spring 179 is stretched, when the upper cam 177 rotates clockwise into the upper groove 174, the doctor stops rotating the upper rocker 178, at this time, the upper rack 175 is separated from the upper latch 176, the two second sliders 8 at the front side are released, the doctor can dial the first slider upwards or downwards to adjust the distance between the two second elastic belts 9, after the adjustment is completed, the doctor rotates the upper rocker 178 anticlockwise to drive the upper cam 177 to rotate anticlockwise, under the action of the upper second spring 179, the upper rack 175 is reset to the left, when the upper rack 175 is reset to the left and is matched with the upper latch 176, the doctor stops rotating the upper rocker 178, so that the two second sliding blocks 8 on the front side can be fixed, and the second elastic belt 9 is prevented from shifting.
The contact of rubber piece 21 and friction wheel 22 can increase frictional force, and under the effect of shell fragment 19, rubber piece 21 always contacts with friction wheel 22, and consequently, when kelly 13 breaks away from with chuck 10, the speed of first arc 1 downswing can not be too fast to can avoid surgery patient's lower arm to receive secondary injury.
The doctor can hang suspender 23 on surgery patient's neck, then winds suspender 23's one end on first couple 24, again winds suspender 23's the other end on second couple 25, adjusts suspender 23's length to can be applicable to different surgery patient, adjust well afterwards, stop to wind suspender 23 on first couple 24 and second couple 25, suspender 23 can hold first arc 1 and second arc 6, make surgery patient can be light more.
It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.