Arm fixing support for hemodialysis

Abstract

The invention relates to the field of medical auxiliary instruments, in particular to an arm fixing support for hemodialysis, which comprises a support for placing a forearm, a restraint strap for limiting random movement of the fistula-side arm, and a limiting sleeve for limiting the forearm from being drawn out of the support, the limiting sleeve comprises an inserting sleeve detachably connected to the supporting bracket and a rotating sleeve rotationally connected to the inserting sleeve, and the inserting sleeve is rotationally connected with an adjusting knob used for adjusting the angle of the rotating sleeve, so that adaptive adjustment is carried out according to postures of different patients, and the comfort of the patients in the long-time hemodialysis process is improved.

Description

Technical Field

[0001] This application relates to the field of medical auxiliary devices, and particularly to an arm fixing bracket for hemodialysis. Background Art

[0002] During hemodialysis, generally two relatively thick needles need to be inserted into the arm on the side where the fistula is created, and each dialysis needs to be maintained for at least four hours. During this process, it is necessary to ensure that the arm on the side where the fistula is created does not move too much to prevent symptoms such as hematoma, which may affect the patient's physical health.

[0003] For this reason, some auxiliary devices for fixing the arm on the side where the fistula is created are used during hemodialysis. For example, an arm fixing device for hemodialysis with the publication number CN222467349U. The forearm of the arm on the side where the fistula is created is placed into the support trough, and then the forearm in the support trough is wrapped and fixed by a restraint band. Moreover, a limit sleeve is installed at one end of the support trough for the patient's elbow and a part of the upper arm to be placed in to prevent the patient's arm from being easily pulled out of the support trough.

[0004] Regarding the above related technology, the angle of the limit sleeve is fixed, while the patient's height, lying posture, arm placement position, etc. are all different. The limit sleeve with a fixed angle is difficult to adapt to the arm placement of different patients, and it is easy to cause discomfort to the patient during the long-term hemodialysis process. Summary of the Invention

[0005] In order to improve the comfort of patients during the long-term hemodialysis process, this application provides an arm fixing bracket for hemodialysis.

[0006] The arm fixing bracket for hemodialysis provided by this application adopts the following technical solutions.

[0007] An arm fixing bracket for hemodialysis includes a support trough for the forearm to be placed in, a restraint band for restricting the random movement of the arm on the side where the fistula is created, and a limit sleeve for restricting the forearm from being pulled out of the support trough. The limit sleeve includes an insertion sleeve detachably connected to the support trough and a rotating sleeve rotatably connected to the insertion sleeve. The insertion sleeve is rotatably connected with an adjustment knob for adjusting the angle of the rotating sleeve.

[0008] By adopting the above technical solutions, rotating the adjustment knob enables the rotating sleeve to rotate relative to the insertion sleeve to adapt to different arm angles of different patients, so that different patients can obtain better comfort when using the same arm fixing bracket.

[0009] Optionally, the adjustment knob is coaxially and fixedly connected with a worm, and the worm meshes with a worm gear coaxially and fixedly connected to the rotation point of the rotating sleeve.

[0010] By adopting the above technical solution, while facilitating the adjustment of the angle between the rotating sleeve and the inserting sleeve, the rotating sleeve is also prevented from rotating randomly.

[0011] Optionally, the rotating sleeve includes a bottom sleeve rotatably connected to the inserting sleeve, several sectional sleeves that are detachably connected to each other to form a row, and the sectional sleeve with the lowest height is detachably connected to the bottom sleeve.

[0012] By adopting the above technical solution, the number of sectional sleeves can be selected according to the length of the upper arm of different patients, so that all sectional sleeves can be fully inserted into the upper arms of different patients for effective support.

[0013] Optionally, an end piece is fixedly connected to the side with a lower height of the sectional sleeve, the end piece is inserted into the upper end face of the adjacent sectional sleeve, and a limiting member that can abut against the end piece is threadedly connected to the sectional sleeve.

[0014] By adopting the above technical solution, the sectional sleeves can be removed and installed more conveniently.

[0015] Optionally, a rod block is fixedly connected to the part of the limiting member exposed outside the sectional sleeve, and an anti-detachment piece for abutting against the surface of the rod block away from the sectional sleeve is fixedly connected to the sectional sleeve.

[0016] By adopting the above technical solution, the limiting member is not easily dropped and lost during the relatively frequent removal and installation of the sectional sleeves.

[0017] Optionally, a restraint band is provided on each sectional sleeve.

[0018] By adopting the above technical solution, the upper arm is restrained to reduce the influence of the random movement of the upper arm on the lower arm where the syringe is inserted.

[0019] Optionally, a deformable placement member is detachably connected to the vicinity of the surfaces of the rotating sleeve and the inserting sleeve for placing the arm on the fistula side.

[0020] By adopting the above technical solution, the gap between the rotating sleeve and the inserting sleeve is filled, so that when the elbow of the arm on the fistula side is located between the rotating sleeve and the inserting sleeve, the elbow is not likely to feel uncomfortable.

[0021] Optionally, the rotating sleeve and the inserting sleeve are both formed with installation openings for the placement member to be inserted.

[0022] By adopting the above technical solution, the placement member is limited, facilitating the stable installation of the placement member.

[0023] Optionally, the rotating sleeve and the inserting sleeve are detachably connected with a positioning member that can be inserted into the placement member.

[0024] By adopting the above technical solution, the possibility of the placement member detaching from the installation opening is reduced.

[0025] Optionally, the positioning member is inserted into one end of the placing member and has an I-shaped cross-section.

[0026] By adopting the above technical solution, when the placing member is subjected to forces in various directions, the positioning member is not likely to cause cutting damage to the interior of the placing member, so as to prolong the service life of the placing member as much as possible.

[0027] In summary, the present application has at least the following beneficial effects.

[0028] 1. Rotate the adjustment knob so that the rotating sleeve rotates relative to the insertion sleeve to adapt to different arm angles of different patients, so that different patients can obtain better comfort when using the same arm fixing bracket;

[0029] 2. Select the number of sub-sleeves according to the length of the upper arm of different patients, so that all the sub-sleeves can be fully inserted into the upper arms of different patients for effective support;

[0030] 3. Restrain the upper arm to reduce the influence of the random movement of the upper arm on the lower arm with the inserted syringe. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the main structure of the present application;

[0032] Figure 2 is a schematic diagram of a structure in which one positioning member is moved away from the insertion sleeve and a row of sub-sleeves is divided into two parts.

[0033] Description of the reference numerals: 1, support tray; 2, restraint belt; 3, limit sleeve; 4, insertion sleeve; 41, placing member; 42, mounting opening; 43, positioning member; 5, rotating sleeve; 51, adjustment knob; 52, worm; 53, worm gear; 54, sub-sleeve; 55, end piece; 56, limiting member; 57, rod block; 58, anti-disengagement piece; 59, bottom sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following further describes the present application in detail with reference to the accompanying drawings.

[0035] The embodiment of the present application discloses an arm fixing bracket for hemodialysis. Referring to Figure 1 , it includes a support tray 1 for the patient's forearm to be placed in. A mechanism for fixing at the bedside and a mechanism for adjusting the height and angle of the support tray 1 can be provided at the bottom of the support tray 1. The specific structure is referenced in the background art and will not be elaborated here. At least two restraint belts 2 are uniformly arranged along the length direction of the support tray 1. The restraint belts 2 can surround and wrap the patient's forearm and can be fixed by means of Velcro, so that when the pressure exerted by the restraint belts 2 on the patient's forearm is appropriate, the random movement of the patient's forearm can be restricted.

[0036] Reference Figure 1 and Figure 2 A limit sleeve 3 is installed at one end of the support bracket 1. The limit sleeve 3 includes a plug sleeve 4 and a rotating sleeve 5. The plug sleeve 4 can be plugged into the end face of the support bracket 1 along the length direction of the support bracket 1 and fixed by bolts. The rotating sleeve 5 includes a bottom sleeve 59 and several sub-sleeves 54 arranged in a row. The bottom sleeve 59 is rotatably connected to one end face of the support bracket 1. The direction of the rotation axis of the bottom sleeve 59 is consistent with the width direction of the support bracket 1. A worm gear 53 is coaxially fixedly connected at the rotation point of the bottom sleeve. The worm gear 53 is meshed with a vertical worm 52 that is rotatably connected to the plug sleeve 4. The bottom end of the worm 52 is coaxially fixedly connected to an adjustment knob 51 to adjust the angle between the bottom sleeve 59 and the support bracket 1. A box body can be set at the bottom of the plug sleeve 4 to protect the worm gear 53 and the worm 52. In addition, each sub-sleeve 54 can be provided with a restraint belt 2 to apply appropriate pressure to the patient's upper arm to limit the arbitrary movement of the upper arm.

[0037] Reference Figure 2 , all the sub-sleeves 54 are arranged in several sections along a straight line, and the bottom end surface of each sub-sleeve 54 is fixedly connected with an end piece 55, and the end piece 55 of one sub-sleeve 54 is plugged into the upper end surface of the adjacent sub-sleeve 54 with a lower height. The sub-sleeve 54 is threadedly connected with a limiter 56 that can be tightly pressed against the end piece 55, so that the end piece 55 is difficult to be separated from the sub-sleeve 54, so that the sub-sleeves 54 can maintain a close fit after being arranged in a row. The outer surface of the sub-sleeve 54 is fixedly connected with an anti-slip sheet 58 for the limiter 56 to pass through, and the part of the limiter 56 exposed outside the sub-sleeve 54 is fixedly connected with a rod block 57. When the limiter 56 is no longer tightly pressed against the end piece 55, the rod block 57 is in contact with the surface of the anti-slip sheet 58 facing the sub-sleeve 54, thereby limiting the continued rotation of the limiter 56, so that the limiter 56 is difficult to be separated from the sub-sleeve 54.

[0038] Furthermore, the bottom sleeve 59 can be inserted with the end piece 55 of the lowest sub-sleeve 54 , and the bottom sleeve 59 is also provided with an anti-drop sheet 58 and a stopper 56 , etc., so that the lowest sub-sleeve 54 and the bottom sleeve 59 are tightly connected.

[0039] Reference Figure 2 The bottom sleeve 59 and the plug sleeve 4 are both formed with mounting openings 42 near each other. The same placement piece 41 is placed in the two mounting openings 42. The placement piece 41 can be sponge, medical rubber, polyurethane foam, etc. The bottom sleeve 59 and the plug sleeve 4 are inserted with positioning pieces 43 along the width direction of the support bracket 1. The positioning pieces 43 can be fixed by bolts. The positioning piece 43 is located in the placement piece 41 and one end thereof is in an I-shaped shape, so that when the placement piece 41 is subjected to external force and is about to move, the positioning piece 43 is not easy to cause cutting damage to the placement piece 41.

[0040] The implementation principle of an arm fixing bracket for hemodialysis in an embodiment of the present application is as follows: When the forearm is placed into the support tray 1 and it is determined that the posture of the patient's fistula-side arm is relatively comfortable at this time, rotate the adjustment knob 51 so that the rotating sleeve 5 can fully fit the patient's upper arm, and then tie and fix each restraint strap 2 to complete the position fixation of the patient's fistula-side arm.

[0041] The above are all preferred embodiments of the present application. Without limiting the protection scope of the present application accordingly, therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An arm fixing bracket for hemodialysis, comprising a support tray (1) for placing the forearm, a restraint strap (2) for restricting the free movement of the arm on the side where the fistula is made, and a limit sleeve (3) for restricting the forearm from being withdrawn from the support tray (1), characterized in that: The limit sleeve (3) includes an insertion sleeve (4) detachably connected to the support bracket (1) and a rotating sleeve (5) rotatably connected to the insertion sleeve (4). The insertion sleeve (4) is rotatably connected with an adjustment knob (51) for adjusting the angle of the rotating sleeve (5).

2. The arm fixing bracket for hemodialysis according to claim 1, wherein: The adjustment knob (51) is coaxially and fixedly connected with a worm (52), and the worm (52) meshes with a worm gear (53) coaxially and fixedly connected at the rotation point of the rotating sleeve (5).

3. The arm fixing bracket for hemodialysis according to claim 1, wherein: The rotating sleeve (5) includes a bottom sleeve (59) rotatably connected to the insertion sleeve (4) and several sectional sleeves (54) detachably connected to each other to form a row. The sectional sleeve (54) with the lowest height is detachably connected to the bottom sleeve (59).

4. The arm fixing bracket for hemodialysis according to claim 3, wherein: One side of the sectional sleeve (54) with a lower height is fixedly connected with an end piece (55). The end piece (55) is inserted into the upper end face of the adjacent sectional sleeve (54), and the sectional sleeve (54) is threadedly connected with a limiting member (56) that can abut against the end piece (55).

5. The arm fixing bracket for hemodialysis according to claim 4, characterized in that: A rod block (57) is fixedly connected to the part of the limiting member (56) exposed outside the sectional sleeve (54), and an anti - detachment piece (58) is fixedly connected to the sectional sleeve (54) for the surface of the rod block (57) far from the sectional sleeve (54) to abut against.

6. The arm fixing bracket for hemodialysis according to claim 3, wherein: A restraint band (2) is provided on each sectional sleeve (54).

7. The arm fixing bracket for hemodialysis according to claim 1, characterized in that: A placement member (41) capable of elastic deformation is detachably connected to the vicinity of the surfaces of the rotating sleeve (5) and the insertion sleeve (4) for placing the fistula - forming side arm.

8. The arm fixing bracket for hemodialysis according to claim 7, characterized in that: Both the rotating sleeve (5) and the insertion sleeve (4) are formed with an installation opening (42) for the placement member (41) to be inserted into.

9. The arm fixing bracket for hemodialysis according to claim 7, characterized in that: The rotating sleeve (5) and the insertion sleeve (4) are detachably connected with a positioning member (43) that can be inserted into the placement member (41).

10. The arm fixing bracket for hemodialysis according to claim 9, characterized in that: One end of the positioning member (43) inserted into the placement member (41) has an I - shaped cross - section.

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