Adjustable upper limb fixing device for blood purification

Abstract

The invention discloses an adjustable upper limb fixing device for blood purification. The adjustable upper limb fixing device comprises a base, a steering sleeve, a fixing plate, a bearing plate, a temperature control assembly, an infusion pump and an expansion bag. The base is detachably connected with the sickbed, the steering sleeve is rotationally mounted in the middle of the base, and a gear ring is arranged to control rotation and fixation of the steering sleeve; a fixing plate is slidably mounted in the steering sleeve, and a threaded sleeve is rotatably mounted at the upper end of the steering sleeve to control lifting of the fixing plate. A bearing plate is detachably mounted in the middle of the fixing plate, and a controller is integrally arranged at one end; pressing rods are symmetrically arranged at the front end of the bearing plate, and pressing mechanisms are arranged at the rear end in a mirroring manner; a supporting groove is formed in the middle of the bearing plate; an expansion layer is adhered to the inner wall of the supporting groove; the temperature control assembly is detachably provided with an infusion pump.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to an adjustable upper limb fixing device for blood purification. Background Art

[0002] Blood purification treatment is a treatment method that removes harmful substances in the blood and maintains the stability of the internal environment through medical means. Common purification methods include: hemodialysis HD, hemofiltration HF, hemoperfusion HP, etc.; during blood purification, it is necessary to keep the upper limb of the patient fixed for a long time to avoid displacement of the puncture needle or detachment of the pipeline; in the prior art, there are already many fixing devices for the affected limb, but the fixing devices for the affected limb in the prior art have the following problems during clinical use:

[0003] 1. Poor adjustment performance: Firstly, during blood purification, the fixing device for the affected limb in the prior art cannot be adjusted in height or angle after being connected to the bed body, resulting in the affected limb not being able to be fixed in a comfortable position; secondly, blood purification takes 2 - 4 hours. During this treatment period, the affected limb is supported by the fixing device for the affected limb without much impact, but for the upper arm and arm parts of the human body, due to the fixed position of the forearm that cannot be adjusted, the patient is prone to fixed numbness, soreness, itching, etc. in the upper arm and arm parts, resulting in physical discomfort of the patient;

[0004] 2. Low comfort: When blood is drawn out of the body for blood circulation, heat loss will occur; and during blood purification, during the extracorporeal blood circulation process, the circulation pipeline is prone to local blood circulation reduction due to problems such as fistula stenosis and thrombosis, resulting in a decrease in the temperature of the affected limb; moreover, due to the combined effects of the patient's low blood pressure, sympathetic nerve response, and other diseases, although the extracorporeal blood is indirectly heated during blood circulation, it is still prone to a decrease in the temperature of the affected limb, leading to a decrease in blood flow velocity, blood coagulation, vasospasm, etc., resulting in slower blood circulation and affecting the blood purification efficiency;

[0005] Therefore, the present invention discloses an adjustable upper limb fixing device for blood purification. Summary of the Invention

[0006] To achieve the above object, the present invention is realized through the following technical solutions:

[0007] An adjustable upper limb fixing device for blood purification, comprising: a base, a steering sleeve, a fixing plate, a receiving plate, a temperature control component, a liquid extraction pump, and an expansion bladder;

[0008] The base is detachably connected to the hospital bed, and a steering sleeve is rotatably installed in the middle of the base, and a gear ring is provided to control the rotation and fixation of the steering sleeve;

[0009] A fixing plate is slidably installed inside the steering sleeve, and a screw sleeve is rotatably installed at the upper end of the steering sleeve to control the lifting of the fixing plate;

[0010] A receiving plate is detachably installed in the middle of the fixing plate, and a controller is integrally provided at one end;

[0011] Pressure rods are symmetrically arranged at the front end of the receiving plate, and a pressing mechanism is arranged in a mirror image at the rear end; a receiving groove is arranged in the middle of the receiving plate, and an expansion layer is adhesively arranged on the inner wall of the receiving groove;

[0012] A liquid extraction pump is detachably installed on the temperature control component.

[0013] Furthermore, the base is a disc-shaped plate, an adjusting sleeve is rotatably installed in the middle of the base, and a toothed ring for installing a housing is integrally arranged on the wall of the base; a straight rod extends out from the lower end of the base, and a U-shaped frame is arranged at the end of the straight rod to clamp the hospital bed;

[0014] A toothed ring is slidably connected inside the installation housing; a gear is arranged on the inner wall of the toothed ring and is movably connected to the steering sleeve, a square rod is integrally arranged on the outer wall of the toothed ring and is slidably connected to the installation housing, and an adjusting screw is rotatably installed at the end of the square rod; the adjusting screw is threadedly connected to the installation housing;

[0015] A fixing screw is arranged on the lower end wall of the U-shaped frame; the fixing screw is threadedly connected to the U-shaped frame, and the installation and disassembly of the U-shaped frame and the hospital bed body are controlled through the fixing screw;

[0016] Furthermore, a toothed disc is integrally arranged at the lower end of the steering sleeve and is movably connected to the toothed ring; a square groove is opened inside the steering sleeve to slidably install the receiving plate and restrict the rotation of the receiving plate along with the screw sleeve;

[0017] Furthermore, a screw rod is fixedly arranged in the middle of the lower end of the installation plate and is connected to the screw sleeve; a square block is arranged at the lower end of the screw rod and is slidably connected to the steering sleeve;

[0018] Furthermore, the expansion bladder is made of flexible silica gel, a heat-conducting liquid is contained inside the expansion bladder, and heating wires are arranged in an array inside the expansion bladder;

[0019] The expansion bladder is communicated with the liquid extraction pump through a conduit, and the liquid volume inside the expansion layer is controlled through the liquid extraction pump;

[0020] The heating wires are electrically controlled and connected to the temperature control component, and the start-stop control of the heating wires and the regulation of the heating temperature are realized through the temperature control component;

[0021] Furthermore, the pressure rod is threadedly connected to the receiving plate; and the pressure rod is inclined, and the inclined direction of the pressure rod passes through the axis of the receiving groove; a flexible silica gel pressing disc is arranged at the front end of the pressure rod, and the distance between the pressure rod and the axis of the receiving groove is adjusted by rotating the pressure rods on both sides to control the flexible silica gel pressing disc to press and fix the forearm from both sides of the forearm;

[0022] Furthermore, the pressing mechanism includes an adjusting rod and a cross bar; the adjusting rod is rotatably connected to the receiving plate, and the cross bar is threadedly installed on the adjusting rod; one end of the cross bar is integrally formed with a square rod; the cross bar and the square rod form a certain angle, and the angle range is between 100-145°; the outer wall of the square rod is coated with a silica gel layer; by controlling the up and down movement of the cross bar with the adjusting rod, the square rod is controlled to obliquely press and fix the human arm.

[0023] Furthermore, the liquid extraction pump is connected to the expansion bladder through a catheter, and a catheter is provided to connect to the water source of the hospital.

[0024] The beneficial effects of the present invention are:

[0025] The present invention discloses an adjustable upper limb fixing device for blood purification, including: a base, a steering sleeve, a fixing plate, a receiving plate, a temperature control component, a liquid extraction pump, and an expansion bladder; during actual use, the device is quickly fixed on the hospital bed through the fixing screw and the U-shaped frame, and then the affected limb is supported by the receiving plate, and then the pressure rod and the adjusting rod are controlled to move, and the pressure plate and the square rod are controlled to obliquely press the human arm from the front and rear ends of the forearm to fix the arm.

[0026] Then, according to the comfortable posture of the patient's arm, the adjusting screw is rotated to control the separation of the gear ring and the gear disc, the rotating sleeve is controlled to adjust the angle of the receiving plate, and then the adjusting screw is controlled to make the gear ring and the gear disc engage to fix the angle of the receiving plate, and then the screw sleeve is rotated to adjust the height of the receiving plate; in the present invention, the height and angle of the receiving plate can be quickly adjusted, and during the blood purification process, through the fixation of the arm by the pressure plate and the square rod, the forearm and the puncture needle can be kept in one body and synchronously adjusted at a certain angle and height with the control of the receiving plate to change the posture and relieve the upper arm and the upper arm; it solves the problems in the prior art that height adjustment and angle adjustment cannot be performed, and due to the fixation of the forearm position, the patient is prone to fixed numbness, soreness and itching in the upper arm and upper arm parts, resulting in physical discomfort of the patient.

[0027] In the present invention, the liquid is injected into the expansion layer through the liquid extraction pump, and the forearm contacts the expansion layer filled with liquid, enhancing the comfort of the forearm, and the temperature control component can be used to control the resistance wire to work to maintain the temperature of the forearm, avoiding the problems in the prior art that the temperature of the affected limb is likely to decrease, causing a decrease in blood flow velocity, blood coagulation, vasospasm and other conditions, resulting in slower blood circulation and affecting the blood purification efficiency. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below.

[0029] Figure 1 It is an overall structural schematic diagram of an adjustable upper limb fixing device for blood purification;

[0030] Figure 2 is a schematic cross-sectional structure diagram of an adjustable upper limb fixing device for blood purification;

[0031] Figure 3 is a schematic structure diagram of a compression assembly of an adjustable upper limb fixing device for blood purification;

[0032] Figure 4 is a schematic connection structure diagram of a base and a steering sleeve of an adjustable upper limb fixing device for blood purification;

[0033] Figure 5 is an adjustable upper limb fixing device for blood purification Figure 4 schematic cross-sectional structure diagram.

[0034] In the drawings, the list of components represented by each reference numeral is as follows:

[0035] 1 - base, 101 - U-shaped frame, 1011 - fixing screw, 102 - mounting housing, 103 - gear ring, 104 - adjusting screw, 2 - gear disk, 201 - steering sleeve, 202 - screw sleeve, 3 - fixing plate, 301 - screw, 4 - temperature control component, 5 - liquid extraction pump, 501 - conduit, 502 - expansion layer, 6 - adjusting rod, 601 - cross bar, 7 - pressing rod. Detailed implementation manners

[0036] The present invention discloses an adjustable upper limb fixing device for blood purification, including: base 1, steering sleeve 201, fixing plate 3, receiving plate, temperature control component 4, liquid extraction pump 5, expansion bladder;

[0037] The base 1 is detachably connected to the hospital bed. The steering sleeve 201 is rotatably installed in the middle of the base 1, and a gear ring 103 is provided to control the rotation and fixation of the steering sleeve 201;

[0038] The fixing plate 3 is slidably installed inside the steering sleeve 201, and a screw sleeve 202 is rotatably installed at the upper end of the steering sleeve 201 to control the lifting of the fixing plate 3;

[0039] The receiving plate is detachably installed in the middle of the fixing plate 3, and a controller is integrally provided at one end;

[0040] Pressing rods 7 are symmetrically arranged at the front end of the receiving plate, and a pressing mechanism is arranged in a mirror image at the rear end; a support groove is arranged in the middle of the receiving plate, and an expansion layer 502 is adhesively arranged on the inner wall of the support groove;

[0041] The liquid extraction pump 5 is detachably installed on the temperature control component 4.

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0043] Embodiment 1

[0044] As Figures 1 - 5 shown in the schematic diagram of the device structure of the present invention, in the present invention, a base 1, a steering sleeve 201, a fixing plate 3, a receiving plate, a temperature control component 4, a liquid extraction pump 5, and an expansion bladder are provided;

[0045] The base 1 is detachably connected to the hospital bed. A steering sleeve 201 is rotatably installed in the middle of the base 1, and a toothed ring 103 is provided to control the rotation and fixation of the steering sleeve 201;

[0046] The fixing plate 3 is slidably installed inside the steering sleeve 201, and a screw sleeve 202 is rotatably installed at the upper end of the steering sleeve 201 to control the lifting of the fixing plate 3;

[0047] The receiving plate is detachably installed in the middle of the fixing plate 3, and a controller is integrally provided at one end;

[0048] Pressure rods 7 are symmetrically arranged at the front end of the receiving plate, and a pressing mechanism is mirror - arranged at the rear end; a trough is arranged in the middle of the receiving plate, and an expansion layer 502 is adhesively arranged on the inner wall of the trough;

[0049] The liquid extraction pump 5 is detachably installed on the temperature control component 4;

[0050] In this embodiment, the base 1 is a disc - shaped plate. An adjusting sleeve is rotatably installed in the middle of the base 1, and an installation housing 102 is integrally arranged on the wall of the base 1 to install the toothed ring 103; a straight rod extends from the lower end of the base 1, and a C - shaped frame 101 is arranged at the end of the straight rod to be clamped to the hospital bed;

[0051] The toothed ring 103 is slidably connected inside the installation housing 102; a gear is arranged on the inner wall of the toothed ring 103 to be movably connected to the steering sleeve 201, a square rod is integrally arranged on the outer wall of the toothed ring 103 to be slidably connected to the installation housing 102, and an adjusting screw 301104 is rotatably installed at the end of the square rod; the adjusting screw 301104 is threadedly connected to the installation housing 102;

[0052] A fixing screw 3011011 is arranged on the lower wall of the C - shaped frame 101; the fixing screw 3011011 is threadedly connected to the C - shaped frame 101, and the installation and disassembly of the C - shaped frame 101 and the hospital bed body are controlled through the fixing screw 3011011;

[0053] In this embodiment, a toothed disc 2 is integrally arranged at the lower end of the steering sleeve 201 to be movably connected to the toothed ring 103; a square groove is opened inside the steering sleeve 201 to slidably install the receiving plate and restrict the rotation of the receiving plate along with the screw sleeve 202;

[0054] In this embodiment, a screw rod 301 is fixedly installed in the middle of the lower end of the mounting plate to connect with a nut sleeve 202; a square block is arranged at the lower end of the screw rod 301 and is slidably connected to a steering sleeve 201;

[0055] In this embodiment, the expansion bladder is made of flexible silica gel, and a heat-conducting liquid is filled inside the expansion bladder, and heating wires are arranged in an array inside the expansion bladder;

[0056] The expansion bladder is communicated with a liquid extraction pump 5 through a conduit 501, and the amount of liquid inside the expansion layer 502 is controlled by the liquid extraction pump 5;

[0057] The heating wires are electrically connected to a temperature control component 4, and the start-stop control of the heating wires and the regulation of the heating temperature are realized through the temperature control component 4;

[0058] In this embodiment, the pressure rod 7 is in threaded connection with the bearing plate; and the pressure rod 7 is obliquely arranged, and the inclined direction of the pressure rod 7 passes through the axis of the support groove; a flexible silica gel pressing plate is arranged at the front end of the pressure rod 7, and the distance between the pressure rod 7 and the axis of the support groove is adjusted by rotating the pressure rods 7 on both sides, so as to control the flexible silica gel pressing plate to press and fix the forearm from both sides of the forearm;

[0059] In this embodiment, the pressing mechanism includes an adjusting rod 6 and a cross rod 601; the adjusting rod 6 is rotatably connected to the bearing plate, and the cross rod 601 is threadedly installed on the adjusting rod 6; one end of the cross rod 601 is integrally formed with a square rod; the cross rod 601 and the square rod form a certain angle, and the angle range is between 100° and 145°; a silica gel layer is coated on the outer wall of the square rod; the up-and-down movement of the cross rod 601 is controlled by the adjusting rod 6, so as to control the square rod to obliquely press and fix the human arm;

[0060] In this embodiment, the liquid extraction pump 5 is communicated with the expansion bladder through a conduit 501, and the conduit 501 is arranged to be communicated with the water source of the hospital.

[0061] Usage method:

[0062] Align the U-shaped frame 101 at the lower end of the base 1 with the hospital bed, and by rotating the fixing screw 3011011, tightly clamp the U-shaped frame 101 with the hospital bed body to complete the fixation of the device on the hospital bed; let the patient place the upper limb that needs blood purification on the trough of the receiving plate, and rotate the pressure rods 7 on both sides respectively, so that the flexible silicone pressure plates gradually press and fix the forearm from both sides of the forearm; then rotate the adjusting rod 6 in the pressing mechanism, so that the cross bar 601 drives the square rod to move up and down until the square rod obliquely presses and fixes the upper arm or the arm part of the human arm to ensure that the arm is firmly fixed and prevent the puncture needle from shifting or the pipeline from falling off; start the liquid extraction pump 5, inject liquid into the expansion layer 502, and make the forearm fully contact with the expansion layer 502 filled with liquid to increase comfort; according to the temperature of the affected limb of the patient, operate the temperature control component 4 through the controller, start the resistance wire and adjust the heating temperature to keep the temperature of the forearm and avoid affecting blood circulation and blood purification efficiency due to the decrease in the temperature of the affected limb.

[0063] In this embodiment, the device is quickly fixed on the hospital bed through the cooperation of the fixing screw 3011011 and the U-shaped frame 101, and then the affected limb is supported by the receiving plate, and then the movement of the pressure rod 7 and the adjusting rod 6 is controlled to control the pressure plate and the square rod to obliquely press the human arm from the front and rear ends of the forearm to fix the arm.

[0064] Then, according to the comfortable posture of the patient's arm, rotate the adjusting screw 301104 to control the separation of the gear ring 103 from the gear disc 2, control the rotating sleeve to adjust the angle of the receiving plate, and then control the adjusting screw 301104 to control the gear ring 103 to engage with the gear disc 2 to fix the angle of the receiving plate, and then rotate the screw sleeve 202 to adjust the height of the receiving plate; in the present invention, the height and angle of the receiving plate can be quickly adjusted, and during blood purification, through the fixation of the arm by the pressure plate and the square rod, the forearm and the puncture needle can be kept integrated and synchronized to perform a certain angle adjustment and height adjustment with the control of the receiving plate, change the posture, and relieve the upper arm and the arm; solve the problems in the prior art that the height and angle cannot be adjusted, and due to the fixation of the forearm position, the patient is prone to fixed numbness, soreness, itching and other conditions in the upper arm and arm parts, resulting in physical discomfort of the patient.

[0065] In the embodiment, the liquid extraction pump 5 is used to inject liquid into the expansion layer 502, and the forearm contacts with the expansion layer 502 filled with liquid to enhance the comfort of the forearm, and the operation of the resistance wire can be controlled by the temperature control component 4 to keep the temperature of the forearm and avoid the problems in the prior art that the temperature of the affected limb is prone to decrease, causing a decrease in blood flow velocity, coagulation, vasospasm and other conditions, resulting in slower blood circulation and affecting blood purification efficiency.

[0066] In summary, in the present invention, an adjustable upper limb fixing device for blood purification is disclosed. Through the precise cooperation of the base 1, the steering sleeve 201, the fixing plate 3 and the receiving plate, the flexible adjustment of the height and angle of the upper limb is achieved. This design allows medical staff to easily adjust the fixing posture of the affected limb according to the specific body type and treatment needs of the patient, thus effectively avoiding discomfort caused by long-term fixation, such as numbness, soreness and itching, etc.;

[0067] The pressing rod 7 provided at the front end of the receiving plate and the pressing mechanism equipped at the rear end together constitute a personalized arm fixing system. The pressing rod 7 can adjust the inclination angle and pressing force according to the thickness of the patient's arm, while the pressing mechanism realizes the precise fixation of different parts of the arm through the combination of the adjusting screw 301104 and the cross bar 601. This design not only ensures the stability of the affected limb, but also minimizes the unnecessary sense of compression;

[0068] The temperature control component 4, the liquid extraction pump 5 and the expansion bladder built into the device together constitute an intelligent temperature control system. The expansion bladder is made of flexible silica gel and contains heat-conducting liquid and resistance wires. During the treatment process, the liquid extraction pump 5 can inject an appropriate amount of heat-conducting liquid into the expansion layer 502 as needed to increase the comfort of the patient. At the same time, the temperature control component 4 precisely regulates the heating temperature of the resistance wires to maintain the affected limb within a suitable temperature range, effectively avoiding the problem of the temperature reduction of the affected limb caused by extracorporeal blood circulation, thus ensuring the smooth blood circulation and the improvement of the purification efficiency.

[0069] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described.

Claims

1. An adjustable upper limb fixation device for blood purification, characterized in that, Comprising: Base, steering sleeve, fixed plate, receiving plate, temperature control component, liquid extraction pump, expansion bladder; The base is detachably connected to the hospital bed. The steering sleeve is rotatably installed in the middle of the base, and a toothed ring is provided to control the rotation and fixation of the steering sleeve; The fixed plate is slidably installed inside the steering sleeve, and a screw sleeve is rotatably installed at the upper end of the steering sleeve to control the lifting of the fixed plate; The receiving plate is detachably installed in the middle of the fixed plate, and a controller is integrally provided at one end; Pressure rods are symmetrically arranged at the front end of the receiving plate, and a pressing mechanism is arranged mirror-symmetrically at the rear end; a trough is arranged in the middle of the receiving plate, and an expansion layer is adhesively arranged on the inner wall of the trough; The liquid extraction pump is detachably installed on the temperature control component.

2. The adjustable upper limb fixing device for blood purification according to claim 1, characterized in that, The base is a disc-shaped plate. An adjustment sleeve is rotatably installed in the middle of the base, and an installation shell for installing the toothed ring is integrally arranged on the wall of the base; a straight rod extends from the lower end of the base, and a C-shaped frame is arranged at the end of the straight rod to clamp the hospital bed; The toothed ring is slidably connected inside the installation shell; a gear is arranged on the inner wall of the toothed ring and is movably connected to the steering sleeve. A square rod is integrally arranged on the outer wall of the toothed ring and is slidably connected to the installation shell, and an adjustment screw is rotatably installed at the end of the square rod; the adjustment screw is threadedly connected to the installation shell; A fixing screw is arranged on the lower wall of the C-shaped frame; the fixing screw is threadedly connected to the C-shaped frame, and the installation and disassembly of the C-shaped frame and the hospital bed body are controlled by the fixing screw.

3. The adjustable upper limb fixing device for blood purification according to claim 1, wherein, A toothed disc is integrally arranged at the lower end of the steering sleeve and is movably connected to the toothed ring; a square groove is opened inside the steering sleeve to slidably install the receiving plate and limit the rotation of the receiving plate along with the screw sleeve.

4. The adjustable upper limb fixing device for blood purification according to claim 1, wherein, A screw rod is fixedly arranged in the middle of the lower end of the installation plate and is connected to the screw sleeve; a square block is arranged at the lower end of the screw rod and is slidably connected to the steering sleeve.

5. The adjustable upper limb fixing device for blood purification according to claim 1, characterized in that, The expansion bladder is made of flexible silica gel. A heat-conducting liquid is filled inside the expansion bladder, and heating wires are arranged in an array inside the expansion bladder; The expansion bladder is communicated with the liquid extraction pump through a conduit, and the liquid volume inside the expansion layer is controlled by the liquid extraction pump; The heating wires are electrically connected to the temperature control component, and the start-stop control of the heating wires and the regulation of the heating temperature are realized through the temperature control component.

6. The adjustable upper limb fixing device for blood purification according to claim 1, wherein, The pressure rod is threadedly connected to the receiving plate; and the pressure rod is inclined. The inclined direction of the pressure rod passes through the axis of the trough; a flexible silica gel pressing disc is arranged at the front end of the pressure rod. The distance between the pressure rod and the axis of the trough is adjusted by rotating the pressure rods on both sides, and the flexible silica gel pressing disc is used to press and fix the forearm from both sides of the forearm.

7. The adjustable upper limb fixing device for blood purification according to claim 1, wherein, The pressing mechanism includes an adjusting rod and a cross bar; the adjusting rod is rotatably connected to the receiving plate, and the cross bar is threadedly installed on the adjusting rod; a square rod is integrally formed at one end of the cross bar; the cross bar and the square rod form a certain angle, and the angle range is between 100° and 145°; a silica gel layer is coated on the outer wall of the square rod; the up and down movement of the cross bar is controlled by the adjusting rod to control the square rod to obliquely press and fix the human arm.

8. The adjustable upper limb fixing device for blood purification according to claim 1, characterized in that, The liquid extraction pump is communicated with the expansion bladder through a conduit, and a conduit is provided to communicate with the water source of the hospital.

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