CN110215594B

CN110215594B - Dialysis tube positioning device for nephrology department

Info

Publication number: CN110215594B
Application number: CN201910507445.1A
Authority: CN
Inventors: 田芬; 陈晓东; 商进春; 秦林芳; 时军; 杨素霞
Original assignee: Affiliated Hospital of University of Qingdao
Current assignee: Affiliated Hospital of University of Qingdao
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2021-08-17
Anticipated expiration: 2039-06-12
Also published as: CN113262378B; CN110215594A; CN113262378A

Abstract

The invention relates to the technical field of medical equipment, in particular to a dialysis tube positioning device for nephrology department, which comprises a plurality of fixing frames connected in a clamping manner, wherein each fixing frame comprises a main clamping plate, a left clamping plate, a right clamping plate, clamping blocks, binding belts, clamping components and a rolling component, the main clamping plates are provided with two clamping plates and form a circular structure with the left clamping plate and the right clamping plate, the binding belts penetrate through the main clamping plates and are connected with the main clamping plates in a sliding manner, the clamping blocks are clamped on one of the main clamping plates, the clamping blocks are provided with clamping grooves for clamping dialysis tubes, two adjacent fixing frames are connected in a clamping manner through the clamping components, the binding belts penetrate through the clamping components and are fixedly connected with the clamping components, two ends of each binding belt are connected in the rolling component in a clamping manner to form a structure for adjusting the size of the circular structure surrounded by the fixing frames, and the dialysis tubes are firmly fixed on arms, avoids the dialysis treatment influenced by the movement of the dialysis tube, and has wide application prospect in the technical field of medical instruments.

Description

Dialysis tube positioning device for nephrology department

Technical Field

The invention relates to the technical field of medical instruments, in particular to a dialysis tube positioning device for nephrology department.

Background

The dialysis tube is usually used to circulate blood in the dialysis process, especially in the hemodialysis treatment, in the existing hemodialysis treatment process, the needle head at the end part of the dialysis tube is inserted into a human blood vessel, the dialysis tube is usually fixed on an arm by using an adhesive tape, so that the effect of preventing the dialysis tube from shaking randomly to influence the accurate insertion of the needle head at the front end of the dialysis tube into the human blood vessel is achieved, but the dialysis tube cannot be fixed on the arm firmly only through the adhesive tape, and the dialysis tube is very easy to pierce the blood vessel by the needle head when the arm shakes or touches the dialysis tube, so that the dialysis treatment is influenced, and even medical accidents are caused.

Disclosure of Invention

In order to solve the problems that the existing dialysis tube is fixed on an arm only through an adhesive tape, so that the fixation is not firm easily, and the dialysis treatment is influenced, the dialysis tube positioning device for the nephrology department is invented.

The technical scheme of the invention is that the device comprises a plurality of fixing frames connected in a clamping manner, wherein each fixing frame comprises a main clamping plate, a left clamping plate, a right clamping plate, a clamping block, a binding belt, a clamping assembly and a rolling assembly, the main clamping plate comprises two clamping plates, the left clamping plate and the right clamping plate form a circular structure, the binding belt penetrates through the main clamping plates and is connected with the main clamping plates in a sliding manner, the clamping block is clamped on one of the main clamping plates, a clamping groove for clamping a dialysis tube is formed in the clamping block, two adjacent fixing frames are connected in a clamping manner through the clamping assembly and form a structure that the two fixing frames can relatively rotate along a small range in the horizontal direction, the binding belt penetrates through the clamping assembly and is fixedly connected with the clamping assembly, two ends of the binding belt are connected in the rolling assembly in a clamping manner and form a structure for adjusting the size of the circular structure surrounded by the fixing frames through the rolling assembly, the dwang is fixed with the stopper of the joint rolling subassembly of being convenient for, constitutes the dwang and passes through the stopper and drive a plurality of rolling subassembly pivoted structures simultaneously.

Preferably, a sliding hole is formed in the main clamping plate along the length direction, the binding belt penetrates through the sliding hole and is in sliding connection with the main clamping plate, a protective pad is sleeved outside the main clamping plate, and the thickness of the portion, located on the inner side of the main clamping plate, of the protective pad is larger than that of the portion, located on the outer side of the main clamping plate, of the protective pad.

Preferably, a clamping block is fixedly connected to the middle of the inner side surface of one of the main clamping plates, a clamping groove is formed in the clamping block, the clamping block is slidably connected in the clamping groove to fixedly connect the clamping block and the main clamping plate, the clamping groove is formed in the end surface, far away from the clamping groove, of the clamping block, and the two clamping grooves are symmetrically distributed about the clamping groove.

Preferably, the clamping assembly comprises a clamping block and a clamping head, the clamping block is in an elliptic cylinder shape and is located between the two main clamping plates, a through hole is formed in the clamping block along the long axis direction, the constraint belt penetrates through the clamping block through the through hole, a plurality of fixing grooves are formed in the end face, far away from the two main clamping plates, of the clamping block along the direction perpendicular to the through hole, fixing holes communicated with the through hole are formed in the fixing grooves, and the constraint belt is fixedly connected with the clamping block through the fixing holes.

Preferably, a first sliding groove is formed in the end face, far away from the fixing groove, of the clamping block, a first sliding block is connected in the first sliding groove in a sliding mode, and the first sliding block extends to the outside of the clamping block and is fixedly connected with the left clamping plate.

Preferably, joint recess has been seted up to one of them oval terminal surface of joint piece, and another oval terminal surface extends has joint head, adjacent two joint head inserts in the joint recess and connects through the pin rod on the joint piece, forms row arrangement structure, the width of joint recess is greater than joint head's diameter, joint recess's the degree of depth is less than joint head's diameter, joint recess's highly equals joint head's diameter, joint head keeps away from the tip of joint piece for the hemisphere, constitutes the joint round pin and hinders back joint head can use the pin rod to do-10 to 10 rotations along joint recess's width direction as the pivot in joint recess.

Preferably, the winding assembly comprises a winding drum, a winding roller and a rotating shaft, the winding drum is provided with a receiving hole in the extension direction, the winding roller is located in the receiving hole, the winding drum is provided with a winding hole penetrating through the winding drum and the receiving hole, two ends of the restraining belt respectively enter the receiving hole through the two winding holes, the winding roller is provided with two connecting grooves, and the two ends of the restraining belt are slidably connected in the connecting grooves through the receiving hole, so that the restraining belt is connected with the winding roller in a clamping manner.

Preferably, the two ends of the winding drum are in threaded connection with end covers, a limit ring extends from the end face center of the end cover close to the winding drum, the two ends of the winding drum are inserted into the limit ring, the winding drum is provided with a rotating hole along the axis, internal teeth are arranged in the rotating hole, external teeth matched with the internal teeth are arranged on the outer side face of the rotating shaft, the rotating shaft is positioned in the rotating hole and is in meshing transmission connection with the winding drum and the external teeth through the internal teeth, the length of the rotating shaft is smaller than that of the winding drum, the end cover at the limit ring is provided with a rotating hole, a rotating head extends out of the end cover through the rotating hole, communication holes are arranged on the rotating shaft and the rotating head along the axis, two limit grooves symmetrically distributed about the axis of the communication holes are arranged on the rotating head and the rotating shaft in the communication holes, and the rotating shaft penetrates through the winding assembly through the communication holes, the limiting block is connected in the limiting groove in a sliding mode and forms a structure for controlling the rotation of the rotation shaft through the rotating rod.

Preferably, a second sliding groove is formed in the end face, close to the two main clamping plates, of the winding drum, a second sliding block is connected in the second sliding groove in a sliding mode, and the second sliding block extends out of the winding drum and is fixedly connected with the right clamping plate.

The technical scheme of the invention can achieve the following beneficial effects: (1) the plurality of fixing frames are connected together through the clamping assembly, and the fixing frames can be connected as required to form the whole positioning device, so that the dialysis tube can be more fully fixed on the arm; (2) the clamping joint and the clamping groove are arranged to facilitate quick assembly and disassembly of the clamping assembly, and meanwhile, the size of the clamping groove and the size of the clamping joint are arranged to enable the clamping joint to rotate in the clamping groove by a certain angle, so that the dialysis treatment is not influenced, meanwhile, the arm can move in a small-range horizontal direction, and discomfort caused by the fact that the arm cannot shake for a long time is relieved; (3) the circular structure formed by the arc-shaped main clamping plate, the left clamping plate and the right clamping plate is convenient for the whole positioning device to be sleeved on the arm, and the dialysis tube is clamped by the clamping block fixed on the main clamping plate, so that the dialysis tube is more firmly fixed on the arm, and the dialysis treatment is prevented from being influenced by the movement of the dialysis tube; (4) the binding belt can be wound through the winding assembly, so that the size of a circular structure formed by the main clamping plate, the left clamping plate and the right clamping plate is adjusted through the winding and unwinding of the binding belt, and the whole positioning device is firmly fixed on an arm; (5) the winding assembly can be clamped and connected through the rotating rod and the limiting block as required, so that the winding assembly can be driven to rotate simultaneously through the rotating rod, the winding assembly can rotate independently under the condition that the rotation of the rotating rod is not influenced when the winding assembly is driven as required, and the size of a circular structure formed by the main clamping plate, the left clamping plate and the right clamping plate is reasonably adjusted according to the thickness of different parts of an arm, so that the whole positioning device can be further and firmly fixed on the arm.

Drawings

FIG. 1 is a schematic structural view of a positioning device for a dialysis tube for nephrology department according to the present invention.

Fig. 2 is an enlarged view of the area a in fig. 1.

Fig. 3 is an enlarged view of the region B in fig. 1.

FIG. 4 is a front view of a single fixing frame of the positioning device for a dialysis tube in nephrology department.

Fig. 5 is an enlarged view of the region C in fig. 4.

Fig. 6 is an enlarged view of the region D in fig. 4.

Fig. 7 is an enlarged view of the region E in fig. 4.

FIG. 8 is a schematic side view of a single fixing frame of the positioning device for a dialysis tube in nephrology department according to the present invention.

Fig. 9 is an enlarged view of region F in fig. 8.

Wherein, 1, a main clamping plate, 2, a sliding hole, 3, a binding belt, 4, a protective pad, 5, a clamping block, 501, a clamping groove, 502, a clamping block, 6, a clamping groove, 7, a clamping component, 701, a clamping block, 702, a through hole, 703, a fixing groove, 704, a fixing hole, 705, a fixing screw, 706, a clamping groove, 707, a clamping joint, 708, a pin rod, 709, a first pin hole, 710, a second pin hole, 711, a first sliding groove, 8, a rolling component, 801, a rolling cylinder, 802, a rolling hole, 803, a receiving hole, 804, an end cover, 805, a limiting ring, 806, a rolling roller, 807, a rotating hole, 808, internal teeth, 809, a rotating shaft, 810, external teeth, 811, a rotating hole, 812, a rotating head, 813, a communicating hole, 814, a limiting groove, 815, a rotating rod, 816, a second sliding groove, 9, a left clamping plate, 10, a first sliding block, 11, a right clamping plate, 12, a second sliding block, 13, and a second sliding block, 14. a limiting block 15 and a dialysis tube.

Detailed Description

Those of ordinary skill in the art will recognize that the terms "above," "below," "upward," "downward," "top," "bottom," and the like are used for the description of the figures and do not represent limitations on the scope of the invention, as defined by the claims.

The dialysis tube positioning device for nephrology department as shown in fig. 1-9 comprises a plurality of clamping connection fixing frames, so that the using number of the fixing frames can be flexibly adjusted according to the lengths of different human arms, and the positioning device can be more reasonably fixed on the arms. The mount is by main cardboard 1, left cardboard 9, right cardboard 11, fixture block 5, constraint area 3, joint subassembly 7 and rolling component 8 constitute, main cardboard 1 have two and enclose into circular structure with left cardboard 9 and right cardboard 11, be convenient for fix the arm with a plurality of mount blocks through the circular structure that encloses, convex main cardboard 1, left cardboard 9 and right cardboard 11 can also laminate the arm more moreover, do not influence the comfort level of arm. The slide opening 2 has been seted up along length direction on the main cardboard 1, the tie strip 3 runs through

slide opening

2 and 1 sliding connection of main cardboard, make and link together two main cardboards 1 through tie strip 3 and form a whole, and the mount of still being convenient for is fixed on the arm, in addition at the in-process of fixing the mount to the arm through rolling tie strip 3, main cardboard 1 can also slide and make two main cardboards 1 can be located the position of the upper and lower terminal surface of arm, and then can be more firm with the mount, comfortable fixing is on the arm. The main clamping plate 1 is externally sleeved with a protective pad 4, and the thickness of the part, located on the inner side of the main clamping plate 1, of the protective pad 4 is larger than that of the part, located on the outer side of the main clamping plate 1. The protection pad 4 can keep apart main cardboard 1 and arm, avoids main cardboard 1 and arm direct contact probably to cause the injury, but also can play certain cushioning effect for the mount can be more firm comfortable fixing on the arm, still plays certain cold-proof effect in addition, avoids the arm to expose for a long time in dialysis treatment process and feel uncomfortable catching a cold in the external world. The binding belt 3 is a belt-shaped structure woven by polyester cotton materials, and the protective pad 4 is made of polyester cotton fabric, so that a patient feels more comfortable when using the protective pad. Sponge or medical rubber or medical silica gel can also be filled between the thicker side of the protective pad 4 and the main clamping plate, so that a better buffering effect can be generated between the main clamping plate 1 and the arm. The middle position of the inner side surface of one main clamping plate 1 is fixedly connected with a clamping block 502 through a screw, a clamping groove 501 is formed in the clamping block 5, the clamping block 502 is connected in the clamping groove 501 in a sliding mode to achieve connection of the clamping block 5 and the main clamping plate 1, movable connection between the clamping block 5 and the main clamping plate 1 is convenient to achieve, the clamping blocks 5 with different thicknesses can be replaced in different seasons, if the temperature is high in summer, the fixing frame needs to be fixed on an arm and also needs to dissipate heat, the comfort of the arm is kept, the thicker clamping block 5 needs to be used, the gap between the main clamping plate 1 and the arm is increased, and heat dissipation is convenient; the temperature is low in winter, the protection pad 4 on the fixing frame is required to be utilized to keep the arms warm, discomfort caused by catching a cold is avoided, and the fixture block 5 with smaller thickness is required to be used, so that the protection pad 4 can be more fully contacted with the arms. Draw-in groove 6 is seted up on the terminal surface that joint groove 501 was kept away from to fixture block 5, and draw-in groove 6 have two and about joint groove 501 symmetric distribution, be convenient for fix two dialysis catheter 15 in the dialysis treatment through draw-in groove 6 joint for dialysis catheter 15 is connected with the mount and is formed a whole, prevents that dialysis catheter 15 from rocking at will on the arm. Protection pad 4 has seted up the opening in fixture block 5 department for fixture block 5 can pass protection pad 4 and arm direct contact, is convenient for more firm fix dialysis tube 15 laminating on the arm, and the protection pad 4 of cooperation simultaneously heats the blood in dialysis tube 15, prevents that the blood in dialysis tube 15 from scattering and disappearing heat reducing temperature at the flow in-process, and is human uncomfortable when the dialysis treatment. Two adjacent mounts pass through 7 joint connections of joint subassembly, are convenient for realize the connection between a plurality of mounts. And a structure that the two fixing frames can rotate relatively in a small range along the horizontal direction is formed, so that the two adjacent fixing frames can rotate relatively in the horizontal direction, the arm can move in a small range conveniently, and the discomfort caused by the long-time immobility of the arm is relieved. The binding belt 3 penetrates through the clamping component 7 and is fixedly connected with the clamping component 7 through screws, so that the middle position of the binding belt 3 is fixed on the clamping component 7, the clamping component 7 and the winding component 8 are symmetrically distributed about the axis of the fixing frame on the whole fixing frame, and the fixing frame can be fixed on an arm more firmly and comfortably. The both ends joint of constraint area 3 is connected in rolling component 8 to constitute the structure of adjusting the mount and enclosing into circular structure size through rolling component 8, be convenient for realize the rolling of constraint area 3 through rolling component 8, and then change the size of the circular structure that the mount encloses, and then fix the mount on the arm. 8 covers of rolling component establish on a plurality of mounts are established on dwang 13, and is fixed with stopper 14 of the joint rolling component 8 of being convenient for on dwang 13, constitute dwang 13 and drive a plurality of rolling component 8 pivoted structures simultaneously through stopper 14, can drive a plurality of rolling component 8 simultaneously through dwang 13 and rotate simultaneously, be convenient for fix positioner on the arm fast, perhaps take off on the heavy arm.

As shown in fig. 1-4, 6, 8, and 9, the clamping component 7 includes a clamping block 701 and a clamping joint 707, the clamping block 701 is of an elliptic cylinder shape and is located between two main clamping plates 1, so that after the fixing frame is fixed on the arm, the clamping block 701 is located on the side end surface of the arm, and it is ensured that the clamping block 701 can connect two adjacent fixing frames without affecting the clamping of the main clamping plates 1 on the arm. The joint block 701 is provided with a through hole 702 along the long axis direction, and the binding belt 3 penetrates through the joint block 701 through the through hole 702, so that the main clamping plate 1 and the joint block 701 are connected into a whole through the binding belt 3. The end face, away from the two main clamping plates 1, of each clamping block 701 is provided with a plurality of fixing grooves 703 along the direction perpendicular to the through holes 703, fixing holes 704 communicated with the through holes 702 are formed in the fixing grooves 703, and the binding belt 3 is fixed in the fixing holes 704 through fixing screws 705 to be fixedly connected with the clamping blocks 701, so that the clamping blocks 701 are located in the middle of the binding belt 3 all the time, the clamping blocks 701 and the main clamping plates 1 are located on different 90-degree lines in a circular shape, and the fixing frame can be fixed on an arm firmly and comfortably. Clamping groove 706 has been seted up to one of them oval terminal surface of joint piece 701, and another oval terminal surface extends has joint 707, and adjacent two joint 707 inserts in the joint groove 706 and connects through pin pole 708 on the joint piece 701, forms row's arrangement structure for two adjacent mounts pass through joint 707 and joint groove 706 and connect and form a whole, and can form positioner by arranging in line. The width of the clamping groove 706 is larger than the diameter of the clamping joint 707, the depth of the clamping groove 706 is smaller than the diameter of the clamping joint 707, the height of the clamping groove 706 is equal to the diameter of the clamping joint 707, the end part of the clamping joint 707 far away from the clamping block 701 is hemispherical, the clamping joint 707 can rotate at an angle of-10 degrees to 10 degrees along the width direction of the clamping groove 706 by taking the pin rod 708 as a rotating shaft after the clamping joint 707 is blocked in the clamping groove 706, small-range movement of the fixing frame after the fixing frame is fixed on an arm is facilitated, discomfort caused by long-time keeping of the arm in one state is relieved, the rotating amplitude is not too large or too small, the stability of the dialysis tube 15 is affected, discomfort of the arm cannot be relieved, and therefore the rotating effect in the range of-10 degrees to 10 degrees is the best. Keep away from on the terminal surface of fixed slot 703 on the joint piece 701 and seted up first spout 711, sliding connection has first slider 10 in first spout 711, first slider 10 extend to joint piece 701 outer and with left cardboard 9 welded fastening connection, be convenient for be connected left cardboard 9 and joint piece 701 joint and form a whole, utilize curved left cardboard 9 to accomplish the mount from the side of arm simultaneously and fix on the arm, make the mount more comfortable when fixed on the arm. Left cardboard 9 is flexible material, like medical rubber or silica gel material, plays the cushioning effect from the side of arm when on the fixed arm of mount, but also makes the mount fix more comfortable after on the arm.

As shown in fig. 1-4 and 7-9, in the positioning device for a dialysis tube for nephrology department, the rolling component 8 comprises a rolling tube 801, a rolling roller 806 and a rotating shaft 809, the rolling tube 801 is located between the two main clamping plates 1 and is symmetrically distributed with the clamping block 701 about the axis of the fixing frame, so that the rolling component 8 and the clamping component 7 are respectively located on two side edges of the arm after the fixing frame is fixed on the arm, the fixing frame is not influenced to be fixed on the arm, and the rolling component 8 is not influenced to receive and release the restraining strap 3. But also ensures that the fixing frame can be fixed on the arm more firmly and comfortably. The take-up roll 801 is provided with a receiving hole 803 in the extension direction, the wind-up roll 806 is positioned in the receiving hole 803, the take-up roll 801 is provided with a winding hole 802 penetrating through the take-up roll 801 and the receiving hole 803, two ends of the lashing belt 3 respectively enter the receiving hole 803 through the two winding holes 802, the wind-up roll 806 is provided with two connecting grooves 815, two ends of the lashing belt 3 are slidably connected in the connecting grooves 815 at the receiving hole 803, the lashing belt 3 is connected with the wind-up roll 806 in a clamping manner, the lashing belt 3 wound by the wind-up roll 806 is conveniently received by the receiving hole 803, the length of the lashing belt 3 outside the receiving hole 803 is reduced, the area of a circle surrounded by the fixing frame is further reduced, the fixing frame is fixed on an arm, the connecting grooves 815 are convenient for connecting the lashing belt 3 in a clamping manner, and the quick dismounting and clamping connection of the lashing belt 3 and the wind-up roll 806 are realized. The two ends of the winding drum 801 are in threaded connection with the end covers 804, the end covers 804 extend to form limit rings 805 near the center of the end face of the winding drum 801, the two ends of the winding roller 806 are inserted into the limit rings 805, the end covers 804 can seal the receiving holes 803 conveniently, meanwhile, the winding roller 806 is fixed through the end covers 804 and the limit rings 805, the winding roller 806 is fixed through screwing in the end covers 804 after the winding component 8 winds the binding belt 3 to a proper position, the winding roller 806 is prevented from continuing to rotate, and the fixing frame is fixed on an arm for a long time. The winding roller 806 is provided with a rotating hole 807 along the axis, internal teeth 808 are arranged in the rotating hole 807, external teeth 810 matched with the internal teeth are arranged on the outer side surface of the rotating shaft 809, the rotating shaft 809 is located in the rotating hole 807 and is in transmission connection with the winding roller 806 through the meshing of the internal teeth 808 and the external teeth 810, the rotation of the winding roller 806 is driven through the rotation of the rotating shaft 809, and then the winding binding belt 3 of the winding roller 806 is achieved. The end cover 804 at the position of the limiting ring 805 is provided with a rotating hole 811, one end of the rotating shaft 809 extends to form a rotating head 812 and extends out of the end cover 804 through the rotating hole 811, and the rotating shaft 809 is convenient to drive the winding roller 806 to rotate by rotating the rotating head 812 outside the winding drum 801. The length of the rotating shaft 809 is less than the length of the wind-up roll 806 so that the rotating shaft 809 can slide in the rotating hole 807 along the length direction of the rotating hole, thereby changing the length of the rotating head 812 outside the winding drum 801. The intercommunicating pore 813 has been seted up along the axis on axis of rotation 809 and the first 812 that rotates, set up two spacing grooves 814 about the axis symmetric distribution of intercommunicating pore 813 on the first 812 that rotates in the intercommunicating pore 813 and the axis of rotation 809, dwang 13 runs through rolling component 8 through intercommunicating pore 813, stopper 14 sliding connection constitutes the structure that controls axis of rotation 809 pivoted through dwang 13 in spacing groove 814, be convenient for drive a plurality of axis of rotation 809 simultaneously through dwang 13 and rotate, and can also change the length of rotating head 812 outside the winding barrel 801 as required, realize whether stopper 14 sliding connection is in spacing groove 814, and then can realize axis of rotation 809 rotates alone. The second sliding groove 816 is formed in the end face, close to the two main clamping plates 1, of the winding drum 801, the second sliding block 12 is connected to the second sliding groove 816 in a sliding mode, the second sliding block 12 extends to the outside of the winding drum 801 and is fixedly connected with the right clamping plate 11 in a welding mode, the right clamping plate 11 and the winding drum 801 are connected in a clamping mode to form a whole conveniently, meanwhile, the arc-shaped right clamping plate 11 can be used for completing the fixing frame from the side face of the arm to be fixed on the arm, and therefore the fixing frame is more comfortable when being fixed to the arm. Right cardboard 11 is flexible material, like medical rubber or silica gel material, plays the cushioning effect from the side of arm when on the fixed arm of mount, but also makes the mount fix more comfortable after on the arm.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The dialysis tube positioning device for the nephrology department comprises a plurality of fixing frames connected in a clamping manner, and is characterized in that each fixing frame comprises a main clamping plate (1), a left clamping plate (9), a right clamping plate (11), a clamping block (5), a binding belt (3), clamping components (7) and a winding component (8), wherein the main clamping plate (1) comprises two main clamping plates (1), the left clamping plate (9) and the right clamping plate (11) form a circular structure in a surrounding manner, the binding belt (3) penetrates through the main clamping plates (1) and is in sliding connection with the main clamping plates (1), the clamping block (5) is clamped on one main clamping plate (1), a clamping groove (6) for clamping a dialysis tube (15) is formed in each clamping manner on the clamping block (5), two adjacent fixing frames are connected in a clamping manner through the clamping components (7) to form a structure with the two fixing frames capable of relatively rotating along a small range in the horizontal direction, and the binding belt (3) penetrates through the clamping components (7) and is fixedly connected with the clamping components (7), two ends of the binding belt (3) are connected in a clamping manner in the rolling assemblies (8), a structure for adjusting the size of a circular structure surrounded by the fixing frames is formed by the rolling assemblies (8), the rolling assemblies (8) on the fixing frames are sleeved on the rotating rod (13), a plurality of limiting blocks (14) convenient for clamping the rolling assemblies (8) are fixed on the rotating rod (13), and a structure that the rotating rod (13) drives the rolling assemblies (8) to rotate simultaneously through the limiting blocks (14) is formed;

the winding component (8) comprises a winding drum (801), a winding roller (806) and a rotating shaft (809), the winding drum (801) is positioned between the two main clamping plates (1) and is symmetrically distributed with the clamping blocks (701) about the axis of the fixing frame, the winding drum (801) is provided with a receiving hole (803) along the extension direction, the winding roller (806) is positioned in the receiving hole (803), the winding drum (801) is provided with a winding hole (802) which penetrates through the winding drum (801) and the accommodating hole (803), the two ends of the binding belt (3) respectively enter the containing holes (803) through the two rolling holes (802), two connecting grooves (815) are formed in the winding roller (806), and two end parts of the restraining belt (3) are connected in the connecting grooves (815) in a sliding mode in the accommodating holes (803), so that the restraining belt (3) is connected with the winding roller (806) in a clamping mode;

two ends of the winding drum (801) are in threaded connection with end covers (804), a limit ring (805) extends from the end face center of the end cover (804) close to the winding drum (801), two ends of the winding drum (806) are inserted into the limit ring (805), a rotating hole (807) is formed in the winding drum (806) along the axis, internal teeth (808) are formed in the rotating hole (807), external teeth (810) matched with the internal teeth (808) are formed in the outer side face of the rotating shaft (809), the rotating shaft (809) is located in the rotating hole (807) and is in meshing transmission connection with the winding drum (806) and the external teeth (810) through the internal teeth (808), the length of the rotating shaft (809) is smaller than that of the winding drum (806), a rotating hole (811) is formed in the end cover (804) at the limit ring (801), a rotating head (812) extends from one end of the rotating shaft (809) and extends out of the end cover (804) through the rotating hole (811), the rolling shaft is characterized in that a communicating hole (813) is formed in the rotating shaft (809) and the rotating head (812) along the axis, two limiting grooves (814) symmetrically distributed about the axis of the communicating hole (813) are formed in the rotating head (812) and the rotating shaft (809) in the communicating hole (813), the rolling component (8) is penetrated through the communicating hole (813) by the rotating rod (13), and the limiting block (14) is slidably connected in the limiting grooves (814) to form a structure for controlling the rotating shaft (809) to rotate through the rotating rod (13).

2. The dialysis tube positioning device for the nephrology department according to claim 1, wherein a sliding hole (2) is formed in the main clamping plate (1) along the length direction, the restraining belt (3) penetrates through the sliding hole (2) and is slidably connected with the main clamping plate (1), a protective pad (4) is sleeved outside the main clamping plate (1), and the thickness of the portion, located on the inner side of the main clamping plate (1), of the protective pad (4) is larger than that of the portion, located on the outer side of the main clamping plate (1).

3. The dialysis catheter positioning device for the nephrology department, according to claim 1, wherein a clamping block (502) is fixedly connected to a middle position of an inner side surface of one of the main clamping plates (1), a clamping groove (501) is formed in the clamping block (5), the clamping block (502) is slidably connected in the clamping groove (501) to fixedly connect the clamping block (5) and the main clamping plate (1), the clamping groove (6) is formed in an end surface of the clamping block (5) far away from the clamping groove (501), and two clamping grooves (6) are symmetrically distributed about the clamping groove (501).

4. The dialysis tube positioning device for the nephrology department as claimed in claim 1, wherein the clamping component (7) comprises a clamping block (701) and a clamping head (707), the clamping block (701) is of an elliptic cylinder shape and is located between the two main clamping plates (1), a through hole (702) is formed in the clamping block (701) along the long axis direction, the restraining belt (3) penetrates through the clamping block (701) through the through hole (702), a plurality of fixing grooves (703) are formed in the end face, away from the two main clamping plates (1), of the clamping block (701) along the direction perpendicular to the through hole (702), fixing holes (704) communicated with the through hole (702) are formed in the fixing grooves (703), and the restraining belt (3) is fixedly connected with the clamping block (701) through the fixing holes (704).

5. The dialysis tube positioning device for the nephrology department as claimed in claim 4, wherein a first sliding groove (711) is formed in an end face, far away from the fixing groove (703), of the clamping block (701), a first sliding block (10) is connected in the first sliding groove (711) in a sliding mode, and the first sliding block (10) extends out of the clamping block (701) and is fixedly connected with the left clamping plate (9).

6. The dialysis tube positioning device for the nephrology department as recited in claim 4, wherein one oval end face of the clamping blocks (701) is provided with a clamping groove (706), the other oval end face is extended with a clamping head (707), the clamping heads (707) on two adjacent clamping blocks (701) are inserted into the clamping groove (706) and connected through a pin rod (708) to form a row arrangement structure, the width of the clamping groove (706) is larger than the diameter of the clamping connector (707), the depth of the clamping groove (706) is smaller than the diameter of the clamping connector (707), the height of the clamping groove (706) is equal to the diameter of the clamping joint (707), the end part of the clamping joint (707) far away from the clamping block (701) is hemispherical, and the clamping joint (707) can rotate by-10 degrees to 10 degrees along the width direction of the clamping groove (706) by taking the pin rod (708) as a rotating shaft after the pin of the clamping joint (707) is blocked in the clamping groove (706).

7. The dialysis tube positioning device for the nephrology department as claimed in claim 1, wherein a second sliding groove (816) is formed in the end face of the winding drum (801) close to the two main clamping plates (1), a second sliding block (12) is connected in the second sliding groove (816) in a sliding manner, and the second sliding block (12) extends out of the winding drum (801) and is fixedly connected with the right clamping plate (11).