CN209847500U

CN209847500U - Radius ulna therapeutic equipment that looses

Info

Publication number: CN209847500U
Application number: CN201920207163.5U
Authority: CN
Inventors: 田野
Original assignee: Shijiazhuang Photoelectric Technology Co Ltd
Current assignee: Shijiazhuang Photoelectric Technology Co Ltd
Priority date: 2019-02-18
Filing date: 2019-02-18
Publication date: 2019-12-27
Anticipated expiration: 2029-02-18

Abstract

The utility model provides a radius ulna release therapeutic apparatus, which relates to the technical field of joint rehabilitation training instruments and comprises a link bridge frame, wherein a fixing bracket is arranged above the near end; the far end of the forearm sliding seat is provided with a supporting seat extending upwards; a slideway lock; the forearm rotates and holds in the palm; the output end of the rotating component is connected with the forearm rotating support, and the rotating component and the forearm rotating support are respectively positioned at two sides of the supporting seat. The utility model provides a radius ulna therapeutic apparatus that releases when the fixed bolster is effectively fixed with the forearm near-end, drive the forearm rotation through rotatory subassembly and hold in the palm the rotation in order to realize the standard control to radius and ulna rotation angle, and then realize the static tractive of radius and ulna normal movement orbit recovered, pull open contracture's tendon, make contracture stiff muscle and tendon release tension, make it have elasticity, resume the free rotation function of radius ulna joint.

Description

Radius ulna therapeutic equipment that looses

Technical Field

The utility model belongs to the technical field of joint rehabilitation needs training apparatus, more specifically says, relates to a radius ulna therapeutic apparatus that relaxes.

Background

After trauma or operation, joints at both ends of the radius and the ulna need to be fixed to limit the movement of the joints, so as to facilitate the rapid repair of bones. In the process of bone repair, contracture and adhesion of tendons are often caused due to long-term fixation and inflammation influence, so that after the limitation of joint external fixation is removed, patients can generate different degrees of joint dysfunction at two ends of the ulna of the radius, mainly rotation dysfunction, and daily life of the patients is greatly influenced, so that rehabilitation treatment of the joints at two ends of the ulna of the radius of the patients is necessary.

At present, the treatment method of artificial twisting and breaking is mostly adopted for treating the functional disorder of the joints at two ends of the ulna of the radius. However, the above-mentioned treatment methods are not standard and difficult to ensure the wrestling amplitude, and the duration is not stable, so the treatment effect is not ideal and the secondary injury is easily caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a radius ulna therapeutic apparatus that relaxes to the treatment method who solves the radius ulna dysfunction that exists among the prior art does not have the technical problem that fixed standard caused secondary injury easily.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a radius ulna loosening treatment instrument, including:

a fixing bracket for fixing the near end of the forearm is arranged above the near end of the link bridge;

the front arm sliding seat is connected with the link bridge in a sliding mode, a supporting seat extending upwards is arranged at the far end of the link bridge, the front arm sliding seat is located at the far end of the link bridge, and a slide rail lock which penetrates through the link bridge and is used for locking the link bridge and the front arm sliding seat is arranged on the outer side of the front arm sliding seat;

the forearm rotates and holds in the palm, unsettled set up in forearm slide top and distal end with one side of supporting seat is rotated and is connected, the forearm rotates to hold in the palm and is connected with and is located the supporting seat opposite side just is used for the drive the forearm rotates and holds in the palm pivoted rotating assembly.

As a further optimization, the forearm rotation support comprises:

the bracket is arranged on one side of the near end of the supporting seat and is connected with the output end of the rotating assembly;

the pressing plate is used for pressing the arms, the far end of the pressing plate is hinged with the bracket, and the hinged shaft is arranged along the horizontal direction and is vertical to the central shaft of the link bridge;

the second bandage is arranged between the near ends of the bracket and the pressing plate and used for fixing the arm.

As a further optimization, the two sides of the forearm sliding seat are provided with sliding handles extending upwards.

As a further optimization, the support seat comprises:

the seat body is fixedly connected with the far end of the front arm sliding seat;

the shell is connected with the base body, and the shell and the base body form a cavity for accommodating the rotating assembly.

As a further optimization, a dial is arranged on the near side of the seat body, and a scale pointer used for being matched with the dial is arranged on the bracket.

As a further optimization, the rotating assembly comprises:

the worm wheel is arranged in a cavity formed by the seat body and the shell, and a main shaft of the worm wheel penetrates through the supporting seat and is rotationally connected with the supporting seat;

the worm is meshed with the worm wheel and is used for driving the worm wheel to rotate;

and the knob is arranged at the free end of the worm and is used for driving the worm to rotate.

As a further optimization, the rotating assembly further comprises a torque sensor, a torque display and a controller electrically connected with the torque sensor and the torque display respectively.

As a further optimization, the radius ulna loosening treatment device further comprises:

the proximal end of the humerus fixing part is rotationally connected with the link bridge and is used for fixing the humerus; a locking assembly for locking the humerus fixing piece and the chain bridge is arranged between the humerus fixing piece and the chain bridge.

As a further refinement, the humeral fixation member includes:

the lower end of the humerus supporting seat is hinged with the near end of the link bridge and is provided with a plurality of clamping grooves along the central shaft;

the humerus sliding seat is connected with the humerus supporting seat in a clamping mode, and a clamping rod connected with the clamping groove in a clamping mode is arranged at the near end of the humerus sliding seat;

the first bandage is arranged on the humerus sliding seat and used for fixing the humerus.

As a further refinement, the locking assembly comprises:

the adjusting chain wheel is arranged at the near end of the link bridge and is provided with a plurality of first clamping teeth arranged along the radial direction in the circumferential direction;

the chuck is arranged on the humerus fixing piece, is used for being clamped with the adjusting dental disc and is provided with a plurality of second clamping teeth clamped with the first clamping teeth;

the chain wheel lock is arranged on the proximal end side of the humerus fixing piece and used for fixing and adjusting the chain wheel and the chuck.

The utility model provides a radius ulna therapeutic apparatus that relaxes's beneficial effect lies in: the utility model provides a radius ulna therapeutic apparatus that releases when the fixed bolster is effectively fixed with the forearm near-end, drive the forearm rotation through rotatory subassembly and hold in the palm the rotation in order to realize the standard control to radius and ulna rotation angle, and then realize the static tractive of radius and ulna normal movement orbit recovered, pull open contracture's tendon, make contracture stiff muscle and tendon release tension, make it have elasticity, resume the free rotation function of radius ulna joint.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a radius ulna loosening treatment device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the forearm rotating holder of FIG. 1 in a rotated state;

fig. 3 is a schematic diagram of the exploded structure of fig. 1.

In the figure: 100. a humeral fixation member; 110. a humerus support seat; 111. a card slot; 120. a humeral slide; 130. a first strap; 210. a link bridge; 211. a fixing bracket; 212. a mounting seat; 220. a forearm slide; 221. a sliding handle; 223. a base body; 224. a housing; 225. a dial scale; 230. a slideway lock; 240. the forearm rotates and holds in the palm; 241. a bracket; 242. pressing a plate; 244. a scale pointer; 300. a locking assembly; 310. adjusting a chain wheel; 320. a chuck; 330. a chain wheel lock; 400. a rotating assembly; 410. a worm; 420. a worm gear; 430. a knob; 440. a torsion display.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail.

Referring to fig. 1 to 3 together, the radius ulna loosening therapeutic device provided by the present invention will now be described. Radius ulna therapeutic equipment that relaxes includes: a fixing bracket 211 for fixing the near end of the forearm is arranged above the near end of the link bridge 210; a front arm sliding seat 220 slidably connected to the link bridge 210, and a supporting seat extending upward is provided at a distal end of the front arm sliding seat 220, the front arm sliding seat 220 is located at the distal end of the link bridge 210, and a slide lock 230 penetrating through the link bridge 210 and used for locking the link bridge 210 and the front arm sliding seat 220 is provided at an outer side of the front arm sliding seat 220; a forearm rotating support 240 suspended above the forearm slide 220 and connected to one side of the support seat at its distal end, the forearm rotating support 240 being connected to a rotating assembly 400 located at the other side of the support seat and used for driving the forearm rotating support 240 to rotate. The described embodiments are only intended to illustrate the invention and are not intended to limit the invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. The terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the medical field, the expression of detailed parts of the bones of the limbs is described in terms of proximal and distal ends, the distal and proximal ends being distinguished by the distance from the trunk. Taking the arm as an example, the humerus of the upper arm is proximal to the shoulder joint and distal to the elbow joint; while the ulna on the forearm is proximal to the elbow joint and distal to the wrist joint. The proximal end of the link bridge 210 is provided with a mounting seat 212 for holding the fixing bracket 211, providing a stable mounting plane for the fixing bracket 211.

The slide lock 230 in this embodiment is in the form of a jackscrew, a threaded end penetrates through a side wall of the forearm slide 220 to abut against the link bridge 210 for jacking, a plastic button convenient for being screwed by a hand is arranged at an outer end of the slide lock 230, and after the forearm slide 220 slides to a required position, the jackscrew is locked by screwing the plastic button, so that the locking of the relative positions of the forearm slide 220 and the link bridge 210 is realized.

The utility model provides a radius ulna therapeutic apparatus that releases when fixed bracket 211 is effectively fixed with the forearm near-end, drive forearm rotation through rotating assembly 400 and hold in the palm 240 rotations so that realize the standard control to radius and ulna rotation angle, and then realize the static tractive rehabilitation to radius and ulna normal activity orbit, pull open the tendon of contracture, make muscle and tendon release tension that contracture is stiff, make it have elasticity, resume the free rotation function of radius ulna joint.

Referring to fig. 1 to 3 together, as an embodiment of the radius ulna loosening therapeutic apparatus provided by the present invention, the forearm rotating support 240 includes: a bracket 241 disposed at one side of the proximal end of the support base and connected to the output end of the rotating assembly 400; a pressing plate 242 for pressing the arm, the distal end of which is hinged to the bracket 241, the hinge axis is arranged along the horizontal direction and perpendicular to the central axis of the bridge 210; and a second strap disposed between the proximal ends of the bracket 241 and the pressure plate 242 for fixing the arm. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. The far end of bracket 241 links to each other with the output shaft of worm wheel 420, can produce the synchronous rotatory action with worm wheel 420, and bracket 241 top is equipped with the clamp plate 242 with bracket 241 articulated, utilizes clamp plate 242 to compress tightly the arm from the top, combines the second bandage to tie up clamp plate 242 and bracket 241 tightly, finally realizes effectively fixing the far end of hand.

Referring to fig. 1 to 3 together, as an embodiment of the radius ulna loosening therapeutic device of the present invention, sliding handles 221 extending upward are provided on both sides of the forearm sliding base 220. In order to facilitate the sliding adjustment between the forearm sliding seat 220 and the link bridge 210, the sliding handles 221 are arranged on the two sides of the forearm sliding seat 220, so that on one hand, the forearm sliding seat 220 can be conveniently pushed to slide above the link bridge 210, and meanwhile, the sliding handles 221 on the two sides can also properly limit the position of the forearm, thereby preventing the partial arm from being separated from the two sides of the forearm sliding seat 220.

Referring to fig. 3, as a specific embodiment of the radius ulna therapeutic apparatus for loosening according to the present invention, the supporting seat includes: a seat body 223 fixedly connected with the far end of the forearm sliding seat 220; a housing 224 connected to the holder body 223, wherein the housing 224 and the holder body 223 form a cavity for accommodating the rotating assembly 400. The seat body 223 and the forearm slide 220 are in an integrated form, a stable installation base point can be provided for the far-end rotating assembly 400, the shell 224 and the seat body 223 are enclosed outside the worm wheel 420 and the worm 410, and the worm wheel 420 and the worm 410 are arranged in a cavity enclosed by the shell 224 and the seat body 223, so that the situation that the normal operation of rehabilitation training is influenced due to position interference with external components is avoided.

Referring to fig. 1 and 3 together, as a specific embodiment of the radius ulna loosening therapeutic device provided by the present invention, a dial 225 is disposed on the proximal side of the seat 223, and a scale pointer 244 for cooperating with the dial 225 is disposed on the bracket 241. The dial 225 is provided with angle marks, when the forearm rotating support 240 drives the arm to rotate, the scale pointer 244 on the forearm rotating support 240 also rotates, the angle of the rotation passing can be read out through the corresponding rotation angle of the scale pointer 244 on the dial 225, and the angle of the rotation of the arm of the patient can be conveniently and visually displayed.

Referring to fig. 3, as an embodiment of the radius ulna loosening treatment device provided by the present invention, a rotation assembly 400 includes: the worm gear 420 is arranged in a cavity formed by the seat body 223 and the shell 224, and a main shaft of the worm gear 420 penetrates through the supporting seat and is rotatably connected with the supporting seat; a worm 410 engaged with the worm wheel 420 and for driving the worm wheel 420 to rotate; and a knob 430 disposed at a free end of the worm 410 and used for driving the worm 410 to rotate. The worm 410 has good self-locking property when driving the worm wheel 420 to rotate, and the lead angle of the worm 410 is smaller than the equivalent friction angle between the teeth of the meshing wheel when the worm 410 and the worm wheel 420 are designed, so that the rotating assembly 400 has self-locking property and can realize reverse self-locking, namely, the worm 410 only can drive the worm wheel 420, but the worm wheel 420 cannot drive the worm 410. That is, when the knob 430 is twisted and the worm 410 rotates, the worm wheel 420 is driven to rotate synchronously, and when the knob 430 is loosened, the worm wheel 420 does not drive the worm 410 to move under the self-locking effect, and the worm wheel 420 is in a stable position, so that the forearm rotating support 240 is positioned at a stable angle to realize the relative twisting of the radius and the ulna, and the traction effect is achieved.

Referring to fig. 1 to 3 together, as an embodiment of the radius ulna loosening treatment device according to the present invention, the rotation assembly 400 further includes a torque sensor, a torque indicator 440, and a controller electrically connected to the torque sensor and the torque indicator 440, respectively. The torque sensor can effectively measure the torque force of relative twisting of the radius and the ulna, and transmits the new signal to the controller, and the torque force is visually displayed through the torque force display 440, so that family members or medical personnel can conveniently observe the patient in real time when performing rehabilitation training, the injury to the injury of the patient caused by excessive torque force is avoided, and the moderate degree of the training force is ensured.

Referring to fig. 1 to 3, as an embodiment of the radius ulna loosening therapeutic apparatus provided by the present invention, a humerus fixing member 100 is rotatably connected to the link bridge 210 at a proximal end thereof for fixing a humerus; a locking assembly 300 for locking the humeral fixing member 100 and the bridge 210 is provided therebetween. The humeral fixing member 100 is used to support and fix the humerus of a patient, to achieve stability of the relative positions of the humerus and the distal radius and ulna, to provide a stable proximal base for the twisting of the distal radius and ulna, and to ensure the effectiveness of rotational therapy. The upper surface of the mounting seat 212 protrudes from the upper surface of the linking bridge 210, so that the height of the upper surface is effectively increased while the upper surface is flat, and the connecting area between the upper surface and the humerus fixing component 100 is increased.

Referring to fig. 1 to 3 together, as an embodiment of the radius ulna loosening therapeutic apparatus provided by the present invention, a humerus fixing member 100 includes: the lower end of the humerus support seat 110 is hinged with the near end of the link bridge 210 and is provided with a plurality of clamping grooves 111 along the central axis; the humerus sliding seat 120 is connected with the humerus supporting seat 110 in a clamping mode, and a clamping rod connected with the clamping groove 111 in a clamping mode is arranged at the near end; the first strap 130 is disposed on the humeral slide 120 and is used to fix the humerus. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. There is the obtuse angle contained angle between supporting seat and the interlinkage crane span structure 210, according to the different characteristics of different size patient's upper arm bone length, utilizes the kelly joint on the slide in the draw-in groove 111 of different positions, realizes fixing the effect of different positions on upper arm bone supporting seat 110 with upper arm bone slide 120, combines the use of first bandage 130, realizes effectively spacing to patient's upper arm bone.

Referring to fig. 1 to 3 together, as an embodiment of the radius ulna loosening therapeutic device of the present invention, a locking assembly 300 includes: the adjusting chain wheel 310 is arranged at the proximal end of the link bridge 210 and is provided with a plurality of first clamping teeth arranged along the radial direction in the circumferential direction; the chuck 320 is arranged on the humerus fixing piece 100, is used for being clamped with the adjusting crankset 310, and is provided with a plurality of second clamping teeth clamped with the first clamping teeth; a tray lock 330 provided at the proximal side of the humeral fixing member 100 and used to fix the adjustment tray 310 and the chuck 320. The locking assembly 300 is in a form of combining the adjusting chain wheel 310 and the chuck 320, and the locking of the adjusting chain wheel 310 and the chuck 320 is realized by using the chain wheel lock 330, so that the relative rotation in the circumferential direction between the adjusting chain wheel 310 and the chuck 320 is avoided, and the adjustment of the clamping angle of the humerus fixing piece 100 and the linking bridge 210 is realized. First latch is evenly arranged on the circumferencial direction of adjusting chain wheel 310, and the space between two adjacent first slide caliper is used for the second slide caliper joint on the chuck 320, and it can adjust the relative angle between the two to be in the separation state when adjusting chain wheel 310 and chuck 320, when needs fix in a certain department, then utilize chain wheel lock 330 to push chuck 320 to adjust chain wheel 310 one side, realize the joint of the two, and then the effective locking of contained angle between realization link crane span structure 210 and humerus fixing part 100. The installation area of the adjustment chain wheel 310 is effectively increased by the installation of the installation seat 212, so that the adjustment chain wheel has a larger contact area with the chuck 320, and a stable locking effect of the locking assembly 300 is realized.

The using method comprises the following steps:

when the rehabilitation treatment is carried out on the joints at the two ends of the radius ulna of a patient, the rear side of the elbow joint of the patient is fixed on the fixing bracket 211, the upper arm humerus is fixed on the humerus sliding seat 120 through the first bandage 130, the front arm is placed on the link bridge 210, the radius and the ulna are placed in parallel with the link bridge 210 at the moment, the position of the front arm sliding seat 220 on the link bridge 210 is adjusted so as to be suitable for the length of the front arm of the patient, the arm of the patient is placed on the bracket 241, the pressing plate 242 is pressed down, the pressing plate 242 and the bracket 241 wrap the arm, the second bandage is locked, the worm 410 is driven by the rotary knob 430 to drive the gear to rotate, and finally the front arm rotary.

The utility model has the advantages of reasonable structure, easy operation and convenient to carry can be long-time, stable, pull the rehabilitation to patient's radius, ulna, bone head joint tendon to a small extent, when fixed bracket 211 is effectively fixed the forearm near-end, drive forearm rotation through the rotating assembly 400 that sets up and hold in the palm 240 rotation so that realize the acute accurate control of torsion and rotatory angle isoparametric of applying to the rotatory in-process of radius and ulna. The normal movement tracks of the radius and the ulna are statically drawn, so that the contracture tendon is pulled open, the tension of the contracture stiff muscle and tendon is released, the contracture stiff muscle and tendon has elasticity, the free rotation function of the radius ulna joint is recovered, and the device is safe and effective to use.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Radius ulna therapeutic equipment that relaxes, its characterized in that: the method comprises the following steps:

a fixing bracket (211) for fixing the near end of the forearm is arranged above the near end of the link bridge (210);

the front arm sliding seat (220) is connected with the link bridge (210) in a sliding manner, the far end of the front arm sliding seat is provided with a supporting seat extending upwards, the front arm sliding seat (220) is positioned at the far end of the link bridge (210), and the outer side of the front arm sliding seat (220) is provided with a slide rail lock (230) which penetrates through the link bridge (210) and is used for locking the link bridge (210) and the front arm sliding seat (220);

the forearm rotates and holds in the palm (240), unsettled set up in forearm slide (220) top and distal end with one side of supporting seat is rotated and is connected, forearm rotation holds in the palm (240) and is connected with and is located the supporting seat opposite side just is used for the drive forearm rotation holds in the palm pivoted rotating assembly (400) of (240).

2. The ulnar release treatment device according to claim 1, wherein: the forearm rotation mount (240) comprising:

the bracket (241) is arranged on one side of the proximal end of the supporting seat and is connected with the output end of the rotating component (400);

the pressing plate (242) is used for pressing the arm, the far end of the pressing plate is hinged with the bracket (241), and the hinged shaft is arranged along the horizontal direction and is vertical to the central shaft of the chain bridge frame (210);

a second strap disposed between the bracket (241) and the proximal end of the pressure plate (242) and used to secure an arm.

3. The ulnar release treatment device according to claim 2, wherein: and two sides of the forearm sliding seat (220) are provided with sliding handles (221) extending upwards.

4. The ulnar release treatment device according to claim 3, wherein: the supporting seat includes:

the seat body (223) is fixedly connected with the far end of the front arm sliding seat (220);

the shell (224) is connected with the seat body (223), and the shell (224) and the seat body (223) form a cavity for accommodating the rotating assembly (400).

5. The ulnar release treatment device according to claim 4, wherein: the near side of pedestal (223) is equipped with calibrated scale (225), be equipped with on bracket (241) be used for with calibrated scale pointer (244) that calibrated scale (225) cooperation was used.

6. The ulnar release treatment device according to claim 5, wherein: the rotating assembly (400) comprises:

the worm wheel (420) is arranged in a cavity formed by the base body (223) and the shell (224), and a main shaft of the worm wheel (420) penetrates through the supporting seat and is rotatably connected with the supporting seat;

the worm (410) is meshed with the worm wheel (420) and is used for driving the worm wheel (420) to rotate;

the knob (430) is arranged at the free end of the worm (410) and is used for driving the worm (410) to rotate.

7. The ulnar release treatment device according to claim 6, wherein: the rotating assembly (400) further comprises a torque sensor, a torque display (440) and a controller electrically connected to the torque sensor and the torque display (440), respectively.

8. The ulnar release treatment device according to claim 1, wherein: the radius ulna therapeutic apparatus for loosening also comprises:

the proximal end of the humerus fixing piece (100) is rotationally connected with the link bridge (210) and is used for fixing the humerus; a locking assembly (300) for locking the humerus fixing piece (100) and the link bridge (210) is arranged between the humerus fixing piece and the link bridge.

9. The ulnar release treatment device according to claim 8, wherein: the humeral fixation member (100) includes:

the lower end of the humerus supporting seat (110) is hinged with the near end of the link bridge (210) and is provided with a plurality of clamping grooves (111) along the central axis;

the humerus sliding seat (120) is connected with the humerus supporting seat (110) in a clamping mode, and a clamping rod connected with the clamping groove (111) in a clamping mode is arranged at the near end of the humerus sliding seat;

a first strap (130) disposed on the humeral slide (120) and used to fix a humerus.

10. The ulnar release treatment device according to claim 9, wherein: the locking assembly (300) comprises:

the adjusting chain wheel (310) is arranged at the proximal end of the link bridge (210) and is provided with a plurality of first clamping teeth arranged along the radial direction in the circumferential direction;

the chuck (320) is arranged on the humerus fixing piece (100), is used for being clamped with the adjusting crankset (310), and is provided with a plurality of second clamping teeth clamped with the first clamping teeth;

a tray lock (330) provided at a proximal side of the humerus fixing member (100) and used to fix the adjustment tray (310) and the chuck (320).