CN116808324A

CN116808324A - ICU sick bed side sputum aspirator

Info

Publication number: CN116808324A
Application number: CN202310269608.3A
Authority: CN
Inventors: 夏瑞; 王婷婷
Original assignee: Tongji Medical College of Huazhong University of Science and Technology
Current assignee: Tongji Medical College of Huazhong University of Science and Technology
Priority date: 2023-03-20
Filing date: 2023-03-20
Publication date: 2023-09-29

Abstract

The invention discloses an ICU sickbed side sputum suction device which comprises a shell, a fixing structure arranged on one side surface of the shell, a control panel arranged on one side surface of the shell, a sealing door arranged on the other side surface of the shell, a sputum suction pipe, a sputum conveying pipe connected with the sputum suction pipe and a suction pump arranged on the sputum conveying pipe, wherein the fixing structure is used for fixing the shell on a bedstead of the ICU sickbed, the sputum conveying pipe is arranged on one side surface of the shell, the surface of one side of the shell is provided with a sealing mechanism for preventing germs in the sputum from overflowing, the bottom of the shell is provided with a cleaning mechanism for carrying out multistage disinfection on the sputum suction pipe, and an electromagnetic valve is arranged on the sputum conveying pipe and is electrically connected with the control panel.

Description

ICU sick bed side sputum aspirator

Technical Field

The invention belongs to the technical field of medical appliances, and particularly relates to an ICU sickbed side sputum aspirator.

Background

In intensive care units, the sputum is not easy to move, and in the lying process, the sputum possibly causes choking hazard due to the existence of the sputum, and the sputum is easy to form sputum scab to block the airway or cause infection complications in the lung, so that the sputum needs to be sucked.

The invention discloses a special sputum aspirator for ICU bedside of the invention with the authorized bulletin number of CN109224144B, which comprises a placement box, a partition plate, a first liquid discharging hole, a first spring, a sliding plate, a second liquid discharging hole, a second spring, a pressing plate, a connecting rod, a storage box, a liquid discharging pipe, a supporting block, a placement groove, a detection cup, a suction pump, a suction pipe, a placement sleeve, a fixing sleeve, a connecting sleeve and a sputum aspirator.

Disclosure of Invention

The invention aims to provide the ICU sickbed side sputum suction device which can collect sputum and store the collected sputum in a sealing way, so that the condition that germs in the sputum overflow is avoided, meanwhile, the cleaning difficulty of a sputum suction tube and the use of consumable materials are reduced, and the cost is saved.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a by-pass sputum aspirator of ICU sick bed, includes the shell, sets up at the fixed knot of shell one side surface construct, sets up at the control panel of shell one side surface, sets up sealing door, sputum aspirator, the sputum infusion tube of being connected with the sputum aspirator and the getter pump of setting on the sputum infusion tube at shell opposite side surface, fixed knot constructs and is used for fixing the shell on the bedstead of ICU sick bed, the sputum infusion tube sets up at shell one side surface, shell one side surface sets up the sealing mechanism who is arranged in preventing germ in the sputum from spilling over, the shell bottom sets up and is used for carrying out multistage sterile wiper mechanism to the sputum aspirator, set up the solenoid valve on the sputum infusion tube, solenoid valve and control panel electric connection.

Preferably, the sealing mechanism comprises an inner mounting frame, the inner mounting frame is arranged on one side in the shell, a sealing film mounting roller is arranged on the upper portion of the inner mounting frame, a waste film winding roller is arranged on the lower side in the inner mounting frame, a tensioning roller is arranged in the inner mounting frame on one side of the waste film winding roller, a top plate is arranged on one side in the inner mounting frame, a first electric push rod is arranged on one side surface of the top plate, a film pressing plate is arranged on a piston rod of the first electric push rod, a bottom bracket is arranged on the lower side in the inner mounting frame, a tray is arranged on one side surface of the bottom bracket, and a heating disc is arranged on the upper side surface of the tray, and a sputum collection box is arranged on the upper side surface of the tray.

Preferably, the bottom bracket bottom sets up the crossbearer, the crossbearer bottom sets up the screw, screw one end is connected with the lead screw, the lead screw rotates and sets up in the bottom inslot, the bottom inslot sets up bottom in the shell, the lead screw is connected with the driving shaft that is located the driving motor of shell one side surface.

Preferably, the bottom bracket bottom sets up the slider, the slider slides and sets up in the spout, the spout sets up on the crossbearer upside, one side surface sets up the second electric putter in the interior mounting bracket, the piston rod of second electric putter sets up the joint piece, bottom bracket one side surface sets up the joint groove, joint piece and joint groove are arranged on same horizontal plane.

Preferably, the connecting rod is arranged on the surface of the other side of the bottom bracket, a sealing plate is arranged at one end of the connecting rod, the sealing plate is arranged in the taking and placing opening, and the taking and placing opening is arranged on the surface of one side of the shell.

Preferably, the cleaning mechanism comprises a fixed support, the fixed support sets up in the shell bottom, the fixed support bottom sets up antiseptic solution storage box, antiseptic solution storage box one side surface sets up the rolling box, rolling box one side surface sets up the splash guard, the inner bottom of splash guard sets up the loading tray, set up the hose joint on the loading tray, be annular equidistance in the hose joint and set up multiunit hydrojet head, hydrojet head and ring pipe connection, ring pipe sets up in the loading tray, ring pipe one end is connected with the transfer line, transfer line one end extends to in the antiseptic solution storage box, and transfer line one end is connected with the transfer pump simultaneously.

Preferably, a return pipe is arranged at one side of the bottom in the splash-proof barrel, the return pipe extends into the liquid collecting box, and the liquid collecting box is arranged on one side surface of the winding box.

Preferably, a liquid discharge pipe is arranged at the bottom of the liquid collecting box, and a switch valve is arranged on the liquid discharge pipe.

Preferably, a steel wire winding wheel is arranged in the winding box and is arranged on the rotating shaft, the rotating shaft is rotationally arranged on one side in the winding box, one end of the rotating shaft is connected with a first winding motor positioned on one side surface of the winding box, a flexible steel wire is arranged on the steel wire winding wheel, a through hole is formed in the flexible steel wire, the through hole is arranged at the middle of a hose clamping connector and a bearing disc, and flexible bristles are arranged on the outer surface of the flexible steel wire.

Preferably, guide wheels are symmetrically arranged on two sides of the top of the winding box, the guide wheels are attached to flexible steel wires, and ultraviolet disinfection lamps are arranged on the tops of the winding boxes on two sides of the guide wheels.

Compared with the prior art, the invention has the beneficial effects that:

(1) The invention can collect the sputum of a patient in a concentrated way, and can seal the collected sputum rapidly, so that the condition of germ overflow in the sputum can be effectively prevented, the cleanliness of control in an intensive care unit can be ensured, and meanwhile, the condition of sputum scattering and leakage in the process of inspection can be avoided.

(2) The invention can carry out multistage cleaning and disinfection on the sputum suction tube, greatly reduces the cleaning difficulty of medical staff, does not need to frequently replace the sputum suction tube, reduces the use of consumable materials and reduces the cost.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of a right-side cross-sectional structure of the present invention;

FIG. 3 is an enlarged schematic view of FIG. 2A;

FIG. 4 is a schematic view of a partial perspective of a seal mechanism according to the present invention;

FIG. 5 is an enlarged schematic view of the structure shown at B in FIG. 4;

FIG. 6 is a schematic view of a right-side cross-sectional structure of the cleaning mechanism according to the present invention;

FIG. 7 is an enlarged schematic view of FIG. 6 at C;

in the figure: 1. a sealing mechanism; 2. a cleaning mechanism; 3. a sputum aspirator tube; 4. a fixed structure; 5. a control panel; 6. a housing; 7. sealing the door; 8. an electromagnetic valve; 9. a sputum tube; 101. an inner mounting rack; 102. a sealing film installation roller; 103. a top plate; 104. a waste film wind-up roll; 105. a first electric push rod; 106. a film pressing plate; 107. a driving motor; 108. a sputum collection cassette; 109. a heating plate; 110. a tension roller; 111. a bottom bracket; 112. a slide block; 113. a cross frame; 114. a bottom groove; 115. a screw rod; 116. a nut; 117. a chute; 118. a tray; 119. a second electric push rod; 120. a sealing plate; 121. a taking and placing port; 122. a connecting rod; 123. a clamping groove; 124. a clamping block; 201. a fixed bracket; 202. a splash-proof barrel; 203. an infusion tube; 204. a disinfectant storage box; 205. an infusion pump; 206. a rotating shaft; 207. a steel wire winding wheel; 208. a winding box; 209. a switch valve; 210. a liquid discharge pipe; 211. a liquid collecting box; 212. a carrying tray; 213. a through port; 214. a flexible bristle; 215. a liquid ejecting head; 216. a hose clip; 217. an annular pipe; 218. a flexible steel wire; 219. a guide wheel; 220. an ultraviolet sterilizing lamp; 221. and (5) a return pipe.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a by-pass sputum aspirator of ICU sick bed, including shell 6, the fixed knot who sets up in shell 6 one side surface constructs 4, the control panel 5 that sets up in shell 6 one side surface, set up sealing door 7 at shell 6 opposite side surface, sputum aspirator 3, the sputum infusion tube 9 of being connected with sputum aspirator 9 and the aspirator pump of setting on sputum infusion tube 9, aspirator pump and control panel 5 electric connection, sealing door 7 articulates with shell 6, fixed knot constructs 4 and is used for fixing shell 6 on the bedstead of ICU sick bed, sputum infusion tube 9 sets up on shell 6 one side surface, shell 6 one side surface sets up the sealing mechanism 1 that is used for preventing germ in the sputum from spilling over, set up solenoid valve 8 on the sputum infusion tube 9, solenoid valve 8 and control panel 5 electric connection, sealing mechanism 1 includes interior mounting bracket 101, interior mounting bracket 101 sets up in shell 6 one side, interior mounting bracket 101 upper portion sets up sealing film installation roller 102, the lower side in the inner installation frame 101 is provided with a waste film wind-up roll 104, the inner installation frame 101 at one side of the waste film wind-up roll 104 is internally provided with a tensioning roll 110, one end of the waste film wind-up roll 104 is connected with a second wind-up motor at one side of the inner installation frame 101, one side in the inner installation frame 101 is provided with a top plate 103, one side surface of the top plate 103 is provided with a first electric push rod 105, a piston rod of the first electric push rod 105 is provided with a film pressing plate 106, the lower side in the inner installation frame 101 is provided with a bottom bracket 111, one side surface of the bottom bracket 111 is provided with a tray 118, one side surface of the bottom bracket 111 is provided with a heating plate 109, the upper side of the tray 118 is provided with a sputum collection box 108, the bottom bracket 111 is provided with a transverse frame 113, the bottom of the transverse frame 113 is provided with a screw 116, one end of the screw 116 is connected with a screw 115, the screw 115 is rotatably arranged in a bottom groove 114, the bottom groove 114 is arranged at the bottom in the housing 6, the screw rod 115 is connected with a driving shaft of a driving motor 107 positioned on one side surface of the housing 6, and the heating disc 109, the first electric push rod 105, the second winding motor and the driving motor 107 are all electrically connected with the control panel 5.

The working principle and the using flow of the invention are as follows: firstly, fix this device on the bedstead of ICU sick bed through fixed knot constructs 4, then place the sputum suction pipe 3 in patient's oral cavity, produce negative pressure through the aspirator pump, inhale the sputum suction pipe 3 with patient's sputum, sputum suction pipe 3 carries the sputum to defeated phlegm pipe 9, defeated phlegm pipe 9 carries the sputum to in the sputum collection box 108, then drive lead screw 115 through driving motor 107 and rotate, the screw 116 drives the crossbearer 113 and removes, the crossbearer 113 drives bottom support 111 and removes, bottom support 111 drives the push disc and removes, tray 118 drives the sputum collection box 108 and removes, then make heating disc 109 heat, rethread electric putter 105 drives film clamp 106 downwardly moving, film clamp 106 and sealing membrane laminating, and make sealing membrane and sputum collection box 108 laminating, the sealing membrane hot melt bonds at sputum collection box 108 top simultaneously, the sealing membrane seals the opening of box 108, after sealing is accomplished, drive useless film rolling roller 104 through the second collection motor, useless film rolling roller 104 will use along with the sealing membrane rolling roller is carried out, when the sealing membrane rolling roller 104 is carried out, and the sealing membrane can be moved to the new sealing membrane 102 when sealing membrane is installed and sealing membrane rolling roller is moved, and sealing membrane is moved to sealing membrane is moved.

Referring to fig. 2-5, in comparison with the first embodiment, the sputum collection box 108 can be moved out of the housing 6 in the present embodiment, so as to facilitate taking and placing of the sputum collection box 108, and meanwhile, the tightness of the housing 6 can be ensured.

In this embodiment, the cross frame 113 moves to drive the bottom bracket 111 to move, the bottom bracket 111 moves to drive the clamping groove 123 to move, the clamping block 124 is clamped into the clamping groove 123 along with the movement of the bottom bracket 111, after the sputum collection box 108 is sealed, the clamping block 124 is pushed to move by the second electric push rod 119, the clamping block 124 drives the bottom bracket 111 to move, the bottom bracket 111 drives the slide block 112 to move in the chute 117, meanwhile, the bottom bracket 111 drives the connecting rod 122 to move, the connecting rod 122 drives the sealing plate 120 to move, the sealing plate 120 is separated from the picking and placing opening 121, the bottom bracket 111 drives the tray 118 to move along with the movement of the bottom bracket 111, the tray 118 drives the sputum collection box 108 to move, the sputum collection box 108 is moved out of the picking and placing opening 121, then the second electric push rod 119 drives the bottom bracket 111 to reset to move, the sealing plate 120 is attached to the picking and placing opening 121, and the picking and placing opening 121 is sealed.

Referring to fig. 6 and 7, in the third embodiment, in the first embodiment and in the second embodiment, the sputum suction tube 3 can be disinfected and cleaned, specifically, a cleaning mechanism 2 for performing multistage disinfection on the sputum suction tube 3 is disposed at the bottom of the housing 6, the cleaning mechanism 2 includes a fixing support 201, the fixing support 201 is disposed at the bottom of the housing 6, a disinfectant storage box 204 is disposed at the bottom of the fixing support 201, a winding box 208 is disposed on one side surface of the disinfectant storage box 204, a splash-proof tube 202 is disposed on one side surface of the winding box 208, a bearing disc 212 is disposed at the bottom of the splash-proof tube 202, a hose clamping connector 216 is disposed on the upper side surface of the bearing disc 212, a plurality of groups of liquid spray heads 215 are disposed in the hose clamping connector 216 at equal intervals in an annular shape, the liquid spray heads 215 are connected with an annular pipeline 217, the annular pipeline 217 is disposed in the bearing disc 212, one end of the annular pipeline 217 is connected with the infusion tube 203, one end of the infusion tube 203 extends into the disinfectant storage box 204, and simultaneously one end of the infusion tube 203 is connected with the infusion pump 205, and the diameter of the hose clamping connector 216 is greater than the inner diameter of the sputum suction tube 3.

In this embodiment, after the sputum sucking of the patient is completed, the end of the sputum sucking tube 3 is placed on the hose clamp connector 216, the hose clamp connector 216 expands and fixes the end of the sputum sucking tube 3, then the disinfectant in the disinfectant storage box 204 is conveyed to the infusion tube 203 through the infusion pump 205, the infusion tube 203 conveys the disinfectant to the annular pipeline 217, the annular pipeline 217 conveys the disinfectant to the liquid spraying head 215, the liquid spraying head 215 sprays the disinfectant onto the inner wall of the sputum sucking tube 3, and primary cleaning and disinfection are performed on the inner wall of the sputum sucking tube 3.

Referring to fig. 6 and 7, in the fourth embodiment, the sputum suction tube 3 can be cleaned again, and the adhered sputum can be cleaned, so as to improve cleaning cleanliness, specifically, a steel wire winding wheel 207 is disposed in a winding box 208, the steel wire winding wheel 207 is disposed on a rotating shaft 206, the rotating shaft 206 is rotatably disposed on one side of the winding box 208, one end of the rotating shaft 206 is connected with a first winding motor disposed on one side surface of the winding box 208, a flexible steel wire 218 is disposed on the steel wire winding wheel 207, a flexible steel wire 218 penetrates through a through hole 213, the through hole 213 is disposed in the middle of a hose clamping connector 216 and a bearing disc 212, and flexible bristles 214 are disposed on the outer surface of the flexible steel wire 218.

In this embodiment, after the disinfectant sprays and accomplishes, drive the pivot 206 through first rolling motor and rotate, the pivot 206 drives the rotation of wire winding wheel 207, the rotation of wire winding wheel 207 releases flexible steel wire 218, and then the steel wire moves through opening 213, and make flexible steel wire 218 remove to inhale in the phlegm pipe 3, flexible steel wire 218 removes and drives flexible brush hair 214 and remove, after flexible brush hair 214 shifts out opening 213, flexible brush hair 214 is automatic to be expanded, and laminate with inhaling the inner wall of phlegm pipe 3, along with flexible steel wire 218 collect and release, can drive flexible brush hair 214 and remove, cooperate the disinfectant that high-speed sprays, can clear up the inner wall of inhaling the phlegm pipe 3, clear up conveniently, the use amount of inhaling the phlegm pipe 3 has been reduced, and the loss is reduced.

Guide wheels 219 are symmetrically arranged on two sides of the top of the winding box 208, the guide wheels 219 are attached to the flexible steel wires 218, ultraviolet disinfection lamps 220 are arranged on the inner tops of the winding boxes 208 on two sides of the guide wheels 219, the ultraviolet disinfection lamps 220 are electrically connected with the control panel 5, the two guide wheels 219 are driven to rotate under the action of friction force along with the movement of the flexible steel wires 218, the guide wheels 219 rotate, the movement of the flexible steel wires 218 can be guided, and meanwhile, the ultraviolet disinfection lamps can disinfect the flexible steel wires 218 and the flexible bristles 214.

The bottom side in splash guard 202 sets up the back flow 221, and back flow 221 extends to in the liquid trap 211, and liquid trap 211 sets up in rolling box 208 one side surface, and after the phlegm suction tube 3 washs the completion, through wire rolling wheel 207 with flexible wire 218 rolling to make flexible wire 218 accomodate in opening 213, and then flexible brush hair 214 elastic deformation in opening 213, and seal with opening 213, then separate phlegm suction tube 3 and hose clamp connector 216, residual liquid in the phlegm suction tube 3 is carried to in the liquid trap 211 through back flow 221 and is collected.

The drain pipe 210 is provided at the bottom of the liquid collecting box 211, and the switch valve 209 is provided in the drain pipe 210, so that the liquid in the liquid collecting box 211 can be discharged.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a by-pass sputum aspirator of ICU sick bed, includes shell (6), set up fixed knot structure (4) at shell (6) one side surface, set up control panel (5) at shell (6) one side surface, set up sealing door (7) at shell (6) opposite side surface, inhale phlegm pipe (3), with inhale phlegm pipe (3) connected's phlegm pipe (9) and set up the aspirator pump on phlegm pipe (9), its characterized in that: the sputum tube (9) is arranged on one side surface of the shell (6), the sealing mechanism (1) for preventing germs in sputum from overflowing is arranged on one side surface of the shell (6), the cleaning mechanism (2) for carrying out multistage disinfection on the sputum tube (3) is arranged at the bottom of the shell (6), the electromagnetic valve (8) is arranged on the sputum tube (9), and the electromagnetic valve (8) is electrically connected with the control panel (5).

2. An ICU hospital bed bypass sputum aspirator according to claim 1 wherein: sealing mechanism (1) is including interior mounting bracket (101), interior mounting bracket (101) set up one side in shell (6), interior mounting bracket (101) upper portion sets up sealing film installation roller (102), interior mounting bracket (101) interior downside sets up waste film wind-up roll (104), set up tensioning roller (110) in interior mounting bracket (101) of waste film wind-up roll (104) one side, one side sets up roof (103) in interior mounting bracket (101), roof (103) one side surface sets up first electric putter (105), set up film clamp plate (106) on the piston rod of first electric putter (105), interior downside of interior mounting bracket (101) sets up bottom support (111), bottom support (111) one side surface lower part sets up tray (118), bottom support (111) one side sets up heating plate (109) on the surface, set up sputum collection box (108) on the side on tray (118).

3. An ICU hospital bed bypass sputum aspirator according to claim 2 wherein: the bottom bracket is characterized in that a transverse frame (113) is arranged at the bottom of the bottom bracket (111), a screw (116) is arranged at the bottom of the transverse frame (113), one end of the screw (116) is connected with a screw rod (115), the screw rod (115) is rotatably arranged in a bottom groove (114), the bottom groove (114) is arranged at the inner bottom of the shell (6), and the screw rod (115) is connected with a driving shaft of a driving motor (107) positioned on one side surface of the shell (6).

4. An ICU hospital bed bypass sputum aspirator according to claim 2 wherein: the bottom support (111) bottom sets up slider (112), slider (112) slip sets up in spout (117), spout (117) set up on the lateral surface on crossbearer (113), one side surface sets up second electric putter (119) in interior mounting bracket (101), the piston rod of second electric putter (119) sets up joint piece (124), bottom support (111) one side surface sets up joint groove (123), joint piece (124) are arranged on same horizontal plane with joint groove (123).

5. An ICU hospital bed bypass sputum aspirator according to claim 4 wherein: the connecting rod (122) is arranged on the surface of the other side of the bottom bracket (111), a sealing plate (120) is arranged at one end of the connecting rod (122), the sealing plate (120) is arranged in the taking and placing opening (121), and the taking and placing opening (121) is arranged on the surface of one side of the shell (6).

6. An ICU hospital bed bypass sputum aspirator according to claim 1 wherein: the cleaning mechanism (2) comprises a fixing support (201), the fixing support (201) is arranged at the bottom of the shell (6), a disinfectant storage box (204) is arranged at the bottom of the fixing support (201), a winding box (208) is arranged on one side surface of the disinfectant storage box (204), a splash-proof cylinder (202) is arranged on one side surface of the winding box (208), a bearing disc (212) is arranged at the inner bottom of the splash-proof cylinder (202), a hose clamping connector (216) is arranged on the upper side surface of the bearing disc (212), a plurality of groups of liquid spraying heads (215) are arranged in the hose clamping connector (216) at equal intervals in a ring shape, the liquid spraying heads (215) are connected with a ring-shaped pipeline (217), the ring-shaped pipeline (217) is arranged in the bearing disc (212), one end of the ring-shaped pipeline (217) is connected with a liquid conveying pipe (203), and one end of the liquid conveying pipe (203) extends into the disinfectant storage box (204) and meanwhile one end of the liquid conveying pipe (203) is connected with a liquid conveying pump (205).

7. An ICU hospital bed bypass sputum aspirator according to claim 6 wherein: a return pipe (221) is arranged at one side of the inner bottom of the splash guard (202), the return pipe (221) extends into a liquid collecting box (211), and the liquid collecting box (211) is arranged on one side surface of the winding box (208).

8. An ICU hospital bed bypass sputum aspirator according to claim 7 wherein: a liquid discharge pipe (210) is arranged at the bottom of the liquid collecting box (211), and a switch valve (209) is arranged on the liquid discharge pipe (210).

9. An ICU hospital bed bypass sputum aspirator according to claim 6 wherein: set up steel wire rolling wheel (207) in rolling box (208), steel wire rolling wheel (207) set up on pivot (206), pivot (206) rotate and set up in rolling box (208) one side, pivot (206) one end is connected with the first rolling motor that is located rolling box (208) one side surface, set up flexible steel wire (218) on steel wire rolling wheel (207), flexible steel wire (218) run through opening (213), opening (213) set up at hose joint (216) and loading disc (212) middle part, set up flexible brush hair (214) on flexible steel wire (218) surface.

10. An ICU hospital bed bypass sputum aspirator according to claim 9 wherein: guide wheels (219) are symmetrically arranged on two sides of the top of the winding box (208), the guide wheels (219) are attached to flexible steel wires (218), and ultraviolet disinfection lamps (220) are arranged on the top of the winding box (208) on two sides of the guide wheels (219).