Stitch removing auxiliary device for cardiac surgery

Abstract

The invention discloses a suture removing auxiliary device for cardiac surgery, and belongs to the technical field of surgical suture removing, the suture removing auxiliary device comprises a fixing device, a suture cutting device and a suture pulling device are arranged on the fixing device, the suture cutting device is used for cutting a suture on the skin, and the suture pulling device is used for pulling the cut suture out of the skin. The fixing device is used for adjusting the positions of the thread trimming device and the thread pulling device; the fixing device can adjust the positions of the thread trimming device and the thread pulling device in the X direction, the Y direction and the Z direction, the thread trimming device and the thread pulling device can reach the surgical site where a thread needs to be removed, and the fixing base is installed on a sickbed and is convenient to use. When the thread cutting device moves, the movable knife and the fixed knife are continuously opened and closed to cut off the surgical thread on the skin, the thread pulling claw is driven to continuously pull out the cut surgical thread when the thread cutting device moves, the whole action is conducted continuously, the automation degree is high, and continuity is good.

Description

Technical Field

[0001] The invention relates to the technical field of surgical suture removal, and in particular to a suture removal auxiliary device for cardiac surgery. Background Art

[0002] Removing stitches after heart surgery is an important part of care, and is usually done within one to two weeks after surgery. It is usually between 7 and 14 days after surgery, and the specific time depends on the doctor's advice and the patient's recovery. Before removing the stitches, the doctor will check the healing of the wound to ensure that there is no infection or other complications. First, when removing the stitches, the doctor will use disinfectant to clean the skin around the wound; then the doctor will use stitch removers or scissors to gently cut the sutures to avoid excessive pulling on the skin; after removing the stitches, the doctor will check the wound and re-clean and bandage it if necessary; the cardiac surgery stitch removal auxiliary device in the prior art is usually unable to adapt the position of the end of the operation according to different patients, and cannot automatically perform stitch cutting and stitch removal operations. Usually, the stitch removal process still needs to be performed by a doctor, and disinfection before stitch removal cannot be performed. Summary of the invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is: a suture removal auxiliary device for cardiac surgery, comprising a fixing device, the fixing device comprising a fixing seat, a thread cutting device and a thread pulling device are arranged on the fixing device, the thread cutting device comprises a connecting frame, the thread cutting device is used to cut the suture on the skin, the thread pulling device comprises a fixed slide, the thread pulling device is used to pull the cut suture out of the skin, and the fixing device is used to adjust the positions of the thread cutting device and the thread pulling device; The fixing device comprises an extension frame, a connecting frame fixedly mounted on the extension frame, and a fixed sliding frame fixedly mounted on the extension frame; The thread trimming device comprises a lifting block and a fitting seat, a fixed knife is fixedly mounted on the fitting seat, a descending slider is slidably mounted on the fitting seat, and a movable knife is fixedly mounted on the descending slider; The wire pulling device comprises a plurality of lifting slides which are slidably mounted on a fixed slide, and a docking roller is rotatably mounted on the lifting slide, and the docking roller cooperates with a jacking block.

[0004] Furthermore, the fixing device also includes a traverse motor fixedly mounted on a fixed seat, a motor wheel is fixedly mounted on the motor shaft of the traverse motor, two transmission wheels are rotatably mounted on the fixed seat, a transmission belt is wrapped around the two transmission wheels, a transverse guide rod is fixedly mounted inside the fixed seat, an output belt is wrapped around the motor wheel and the transmission wheel, a traverse seat is fixedly mounted on the transmission belt, and the traverse seat and the transverse guide rod are slidably mounted.

[0005] Furthermore, a lifting motor is fixedly installed in the traverse seat, a traverse frame is fixedly installed on the traverse seat, a lifting screw is rotatably installed in the traverse frame, the lifting screw is fixedly installed on the motor shaft of the lifting motor, a lifting frame is slidably installed on the traverse frame, an internal thread is provided on the lifting frame, a threaded transmission is formed between the lifting frame and the lifting screw, a roller is rotatably installed on the lifting frame, and the roller rolls along the traverse frame.

[0006] Furthermore, a pulley frame, a pulling motor and a sliding sleeve are fixedly installed on the lifting frame, a pulley is rotatably installed on the pulley frame, the pulley is fixedly installed on the motor shaft of the pulling motor, a guide tube is fixedly installed on the lifting frame, an inner sliding column is slidably installed in the sliding sleeve, an extension frame is fixedly installed on the inner sliding column, a sliding column spring is arranged between the extension frame and the lifting frame, a steel wire rope is wound on the pulley, an end of the steel wire rope is fixedly installed on the extension frame, and the steel wire rope passes through the guide tube.

[0007] The patient lies on the bed with the fixed seat installed on the bed. The rotation of the traverse motor drives the motor wheel to rotate, which in turn drives the transmission wheel to rotate through the output belt, thereby driving the cross guide rod to move, thereby driving the traverse seat to slide along the cross guide rod, thereby adjusting the position of the traverse frame. The rotation of the lifting motor drives the lifting screw rod to rotate, thereby driving the lifting frame to lift and lower along the traverse frame, thereby adjusting the height of the lifting frame. The pulling motor rotates to drive the pulley to rotate, and the extension frame and the inner sliding column are pulled along the sliding sleeve by the steel wire rope, and the position of the extension frame is adjusted in conjunction with the rebound of the sliding column spring, and finally the position of the connecting frame and the fixed slide frame is adjusted to reach the vicinity of the suture line on the skin.

[0008] Furthermore, the wire cutting device also includes a fixed rack fixedly installed on the connecting frame, a moving seat is slidably installed on the connecting frame, a moving motor is fixedly installed on the moving seat, the lifting block is fixedly installed on the moving seat, a motor gear is fixedly installed on the motor shaft of the moving motor, a moving gear is rotatably installed on the moving seat, a cam is fixedly installed on the moving gear, the moving gear is meshed with the fixed rack, a descending rod is slidably installed on the moving seat, the descending rod cooperates with the cam, and the descending rod is slidably installed with the descending slider through a waist hole.

[0009] Furthermore, a vertical sliding column is fixedly installed on the moving seat, the fitting seat and the vertical sliding column are slidably installed, a fitting spring is arranged between the fitting seat and the moving seat, and an opening spring is arranged between the moving seat and the descending slider.

[0010] The rotation of the moving motor drives the motor gear to rotate, thereby driving the moving gear and the cam to rotate. Under the action of the fixed rack, the moving seat is driven to slide along the connecting frame. The fitting spring makes the fitting seat close to the skin. The rotation of the cam will drive the descending rod to slide downward along the moving seat, thereby driving the descending slider and the movable knife to descend. The opening spring is stretched, and the suture thread is cut by the movable knife and the fixed knife. As the moving seat moves forward along the connecting frame, the movable knife and the fixed knife continue to open and close, so that the suture thread can be cut while moving.

[0011] Furthermore, the wire pulling device also includes a fixed shell fixedly mounted on the fixed slide, a lifting rod fixedly mounted on the lifting slide, the lifting rod and the fixed shell are slidably mounted, a claw seat fixedly mounted on the lifting rod, two wire pulling claws are rotatably mounted on the claw seat, a wire clamping spring is arranged between the two wire pulling claws, and an extrusion spring is arranged between the claw seat and the fixed shell.

[0012] Furthermore, a disinfection tube is fixedly mounted on the extension frame, disinfection alcohol is contained in the disinfection tube, a disinfection nozzle is fixedly mounted on the disinfection tube, a cylinder is fixedly mounted on the extension frame, a piston is arranged on the top of the cylinder, and the piston slides in the disinfection tube.

[0013] Furthermore, two clamping slopes are provided at the bottom of the fixed shell. When the wire pulling claw is located in the fixed shell, the wire clamping spring is compressed. When the claw seat extends out of the fixed shell, the wire clamping spring rebounds and the wire pulling claw opens.

[0014] When the moving seat moves, the cylinder extends, and the disinfecting alcohol in the disinfecting tube is sprayed out from the disinfecting nozzle onto the suture line through the piston to disinfect.

[0015] When the movable seat moves, it will drive the lifting block to move together. When the suture thread is cut short by the movable knife and the fixed knife, the thread end is located between the wire pulling claws. The lifting block lifts the lifting slide through the docking roller, thereby driving the lifting rod and the claw seat to rise. After the wire pulling claw contacts the clamping slope, under the action of the clamping slope, the wire pulling claw rotates relative to the claw seat, the wire clamping spring is compressed, and the suture thread is clamped by the wire pulling claw. Then the claw seat rises, driving the suture thread to rise together, and the suture thread is pulled out of the skin to complete the suture removal.

[0016] Compared with the prior art, the present invention has the following advantages: (1) the fixing device provided in the present invention can drive the wire cutting device and the wire pulling device to adjust their positions in three directions, XYZ, so that the wire cutting device and the wire pulling device can reach the surgical site where the sutures need to be removed, and the fixing seat is installed on the bed for easy use; (2) when the wire cutting device provided in the present invention moves, the surgical thread on the skin is cut by continuously opening and closing the movable knife and the fixed knife, and when the wire cutting device moves, the wire pulling claw is driven to continuously pull out the cut surgical thread, and the whole action is performed continuously, with a high degree of automation and good continuity; (3) when the wire cutting device provided in the present invention moves, the cylinder continuously expands and contracts to spray the disinfecting alcohol in the disinfection tube onto the skin through the disinfection nozzle, thereby disinfecting the skin before wire cutting and wire pulling to prevent infection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 The structure of the fixing device of the present invention is shown in FIG. Figure 1 .

[0019] Figure 3 The structure of the fixing device of the present invention is shown in FIG. Figure 2 .

[0020] Figure 4 The structure of the fixing device of the present invention is shown in FIG. Figure 3 .

[0021] Figure 5 The structure of the fixing device of the present invention is shown in FIG. Figure 4 .

[0022] Figure 6 The structure of the thread cutting device of the present invention is shown in FIG. Figure 1 .

[0023] Figure 7 The structure of the thread cutting device of the present invention is shown in FIG. Figure 2 .

[0024] Figure 8 The structure of the thread cutting device of the present invention is shown in FIG. Figure 3 .

[0025] Fig. 9 The structure of the wire pulling device of the present invention is shown in FIG. Figure 1 .

[0026] Fig.10 The structure of the wire pulling device of the present invention is shown in FIG. Figure 2 .

[0027] Fig.11 The structure of the wire pulling device of the present invention is shown in FIG. Figure 3 .

[0028] Figure numbers: 101-fixed seat; 102-traverse motor; 103-motor wheel; 104-transmission wheel; 105-output belt; 106-transverse guide rod; 107-transmission belt; 108-traverse seat; 109-lifting motor; 110-lifting screw rod; 111-traverse frame; 112-lifting frame; 113-pulling motor; 114-pulley frame; 115-pulley; 116-wire rope; 117-sliding sleeve; 118-pipe; 119-roller; 120-inner sliding column; 121-sliding column spring; 122-extending frame; 201-connecting frame; 202-fixed rack; 203-moving seat; 204-vertical sliding column; 205 - fitting spring; 206- fitting seat; 207- moving motor; 208- lifting block; 209- motor gear; 210- moving gear; 211- cam; 212- descending rod; 213- opening spring; 214- descending slider; 215- movable knife; 216- fixed knife; 301- fixed slide; 302- lifting slide; 303- lifting rod; 304- fixed shell; 305- docking roller; 306- cylinder; 307- disinfection tube; 308- disinfection nozzle; 309- extrusion spring; 310- claw seat; 311- pulling claw; 312- clamping spring; 313- clamping slope; 4- skin; 5- suture. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0030] Example: Reference Figure 1-Figure 11 A suture removal auxiliary device for cardiac surgery, comprising a fixing device, the fixing device comprising a fixing seat 101, a thread cutting device and a thread pulling device are arranged on the fixing device, the thread cutting device comprises a connecting frame 201, the thread cutting device is used to cut the suture 5 on the skin 4, the thread pulling device comprises a fixed slide 301, the thread pulling device is used to pull the cut suture 5 out of the skin 4, and the fixing device is used to adjust the positions of the thread cutting device and the thread pulling device; The fixing device includes an extension frame 122, a connecting frame 201 fixedly installed with the extension frame 122, and a fixed sliding frame 301 fixedly installed with the extension frame 122; The thread trimming device includes a lifting block 208 and a fitting seat 206, a fixed knife 216 is fixedly mounted on the fitting seat 206, a descending slider 214 is slidably mounted on the fitting seat 206, and a movable knife 215 is fixedly mounted on the descending slider 214; The wire pulling device includes a plurality of lifting slides 302 slidably mounted on a fixed slide 301 , and docking rollers 305 are rotatably mounted on the lifting slides 302 , and the docking rollers 305 cooperate with the lifting blocks 208 .

[0031] like Figure 2-Figure 5As shown, the fixing device also includes a traverse motor 102 fixedly mounted on the fixing seat 101, a motor wheel 103 is fixedly mounted on the motor shaft of the traverse motor 102, two transmission wheels 104 are rotatably mounted on the fixing seat 101, a transmission belt 107 is wound around the two transmission wheels 104, a transverse guide rod 106 is fixedly mounted inside the fixing seat 101, an output belt 105 is wound around the motor wheel 103 and the transmission wheel 104, a traverse seat 108 is fixedly mounted on the transmission belt 107, and the traverse seat 108 is slidably mounted with the transverse guide rod 106.

[0032] like Figure 2-Figure 5 As shown, a lifting motor 109 is fixedly installed in the traverse seat 108, a traverse frame 111 is fixedly installed on the traverse seat 108, a lifting screw rod 110 is rotatably installed in the traverse frame 111, the lifting screw rod 110 is fixedly installed with the motor shaft of the lifting motor 109, a lifting frame 112 is slidably installed on the traverse frame 111, the lifting frame 112 is provided with an internal thread, the lifting frame 112 and the lifting screw rod 110 form a threaded transmission, a roller 119 is rotatably installed on the lifting frame 112, and the roller 119 rolls along the traverse frame 111.

[0033] like Figure 2-Figure 5 As shown, a pulley frame 114, a pulling motor 113 and a sliding sleeve 117 are fixedly installed on the lifting frame 112, a pulley 115 is rotatably installed on the pulley frame 114, the pulley 115 is fixedly installed on the motor shaft of the pulling motor 113, a guide tube 118 is fixedly installed on the lifting frame 112, an inner sliding column 120 is slidably installed in the sliding sleeve 117, an extension frame 122 is fixedly installed on the inner sliding column 120, a sliding column spring 121 is arranged between the extension frame 122 and the lifting frame 112, a steel wire rope 116 is wound around the pulley 115, the end of the steel wire rope 116 is fixedly installed on the extension frame 122, and the steel wire rope 116 passes through the guide tube 118.

[0034] The patient lies on the bed, and the fixed seat 101 is installed on the bed. The traverse motor 102 rotates to drive the motor wheel 103 to rotate, and drives the transmission wheel 104 to rotate through the output belt 105, thereby driving the cross guide rod 106 to move, thereby driving the traverse seat 108 to slide along the cross guide rod 106, thereby adjusting the position of the traverse frame 111, and the lifting motor 109 rotates to drive the lifting screw rod 110 to rotate, thereby driving the lifting frame 112 to rise and fall along the traverse frame 111, thereby adjusting the height of the lifting frame 112, and the pulling motor 113 rotates to drive the pulley 115 to rotate, and pulls the extension frame 122 and the inner sliding column 120 to slide along the sliding sleeve 117 through the wire rope 116, and cooperates with the rebound of the sliding column spring 121 to adjust the position of the extension frame 122, and finally adjusts the position of the connecting frame 201 and the fixed slide 301 to reach the vicinity of the suture line 5 on the skin 4.

[0035] like Figure 6-Figure 8As shown, the wire trimming device also includes a fixed rack 202 fixedly mounted on the connecting frame 201, a moving seat 203 is slidably mounted on the connecting frame 201, a moving motor 207 is fixedly mounted on the moving seat 203, a lifting block 208 is fixedly mounted on the moving seat 203, a motor gear 209 is fixedly mounted on the motor shaft of the moving motor 207, a moving gear 210 is rotatably mounted on the moving seat 203, a cam 211 is fixedly mounted on the moving gear 210, the moving gear 210 is meshed with the fixed rack 202, a descending rod 212 is slidably mounted on the moving seat 203, the descending rod 212 cooperates with the cam 211, and the descending rod 212 is slidably mounted on the descending slider 214 through a waist hole.

[0036] like Figure 6-Figure 8 As shown, a vertical sliding column 204 is fixedly installed on the moving seat 203, a fitting seat 206 is slidably installed with the vertical sliding column 204, a fitting spring 205 is arranged between the fitting seat 206 and the moving seat 203, and an opening spring 213 is arranged between the moving seat 203 and the descending slider 214.

[0037] The rotation of the moving motor 207 drives the motor gear 209 to rotate, thereby driving the moving gear 210 and the cam 211 to rotate. Under the action of the fixed rack 202, the moving seat 203 is driven to slide along the connecting frame 201, and the fitting spring 205 makes the fitting seat 206 close to the skin 4. The rotation of the cam 211 will drive the descending rod 212 to slide downward along the moving seat 203, thereby driving the descending slider 214 and the movable knife 215 to descend, and the opening spring 213 is stretched, and the suture thread 5 is cut by the movable knife 215 and the fixed knife 216. As the moving seat 203 moves forward along the connecting frame 201, the movable knife 215 and the fixed knife 216 are continuously opened and closed, so that the suture thread 5 can be cut while moving.

[0038] like Figure 9-11 As shown, the wire pulling device also includes a fixed shell 304 fixedly mounted on the fixed slide 301, a lifting rod 303 fixedly mounted on the lifting slide 302, the lifting rod 303 and the fixed shell 304 are slidably mounted, a claw seat 310 is fixedly mounted on the lifting rod 303, two wire pulling claws 311 are rotatably mounted on the claw seat 310, a wire clamping spring 312 is arranged between the two wire pulling claws 311, and an extrusion spring 309 is arranged between the claw seat 310 and the fixed shell 304.

[0039] like Figure 9-11 As shown, a disinfection tube 307 is fixedly installed on the extension frame 122, and disinfection alcohol is filled in the disinfection tube 307. A disinfection nozzle 308 is fixedly installed on the disinfection tube 307. A cylinder 306 is fixedly installed on the extension frame 122, and a piston is arranged on the top of the cylinder 306, and the piston slides in the disinfection tube 307.

[0040] like Figure 9-11As shown, two clamping slopes 313 are provided at the bottom of the fixed shell 304. When the wire pulling claw 311 is located in the fixed shell 304, the wire clamping spring 312 is compressed. When the claw seat 310 extends out of the fixed shell 304, the wire clamping spring 312 rebounds and the wire pulling claw 311 opens.

[0041] When the movable seat 203 moves, the cylinder 306 is extended, and the disinfecting alcohol in the disinfecting tube 307 is sprayed from the disinfecting nozzle 308 to the suture line 5 through the piston to disinfect.

[0042] When the movable seat 203 moves, it will drive the lifting block 208 to move together. When the suture thread 5 is shortened by the movable knife 215 and the fixed knife 216, the thread end is located between the wire pulling claw 311, and the lifting block 208 lifts the lifting slide 302 through the docking roller 305, thereby driving the lifting rod 303 and the claw seat 310 to rise. After the wire pulling claw 311 contacts the clamping slope 313, under the action of the clamping slope 313, the wire pulling claw 311 rotates relative to the claw seat 310, and the wire clamping spring 312 is compressed, and the suture thread 5 is clamped by the wire pulling claw 311. Then the claw seat 310 rises, driving the suture thread 5 to rise together, and the suture thread 5 is pulled out from the skin 4, completing the suture removal.

[0043] The working principle of a suture removal auxiliary device for cardiac surgery disclosed in the present invention is as follows: the patient lies on the hospital bed, the fixed seat 101 is installed on the hospital bed, the traverse motor 102 rotates to drive the motor wheel 103 to rotate, and the output belt 105 drives the transmission wheel 104 to rotate, thereby driving the cross guide rod 106 to move, thereby driving the traverse seat 108 to slide along the cross guide rod 106, thereby adjusting the position of the traverse frame 111, the lifting motor 109 rotates to drive the lifting screw rod 110 to rotate, thereby driving the lifting frame 112 to rise and fall along the traverse frame 111, thereby adjusting the height of the lifting frame 112, the pulling motor 113 rotates to drive the pulley 115 to rotate, and the extension frame 122 and the inner sliding column 120 are pulled by the wire rope 116 to slide along the sliding sleeve 117, and the position of the extension frame 122 is adjusted in cooperation with the rebound of the sliding column spring 121, and finally the position of the connecting frame 201 and the fixed slide 301 is adjusted to reach the vicinity of the suture line 5 on the skin 4. The rotation of the moving motor 207 drives the motor gear 209 to rotate, thereby driving the moving gear 210 and the cam 211 to rotate. Under the action of the fixed rack 202, the moving seat 203 is driven to slide along the connecting frame 201. When the moving seat 203 moves, the cylinder 306 is extended, and the disinfection alcohol in the disinfection tube 307 is sprayed from the disinfection nozzle 308 to the suture 5 through the piston for disinfection. The fitting spring 205 makes the fitting seat 206 close to the skin 4. The rotation of the cam 211 drives the descending rod 212 to slide downward along the moving seat 203, thereby driving the descending slider 214 and the movable knife 215 to descend, and the opening spring 213 is stretched, and the suture 5 is cut by the movable knife 215 and the fixed knife 216. As the moving seat 203 moves along the connecting frame 201, the movable knife 215 and the fixed knife 216 are continuously opened and closed, and the suture 5 is cut while moving. When the movable seat 203 moves, it will drive the lifting block 208 to move together. When the suture thread 5 is shortened by the movable knife 215 and the fixed knife 216, the thread end is located between the wire pulling claw 311, and the lifting block 208 lifts the lifting slide 302 through the docking roller 305, thereby driving the lifting rod 303 and the claw seat 310 to rise. After the wire pulling claw 311 contacts the clamping slope 313, under the action of the clamping slope 313, the wire pulling claw 311 rotates relative to the claw seat 310, and the wire clamping spring 312 is compressed, and the suture thread 5 is clamped by the wire pulling claw 311. Then the claw seat 310 rises, driving the suture thread 5 to rise together, and the suture thread 5 is pulled out from the skin 4, completing the suture removal.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A suture removal auxiliary device for cardiac surgery, comprising a fixing device, characterized in that: The fixing device comprises a fixing seat (101), a thread cutting device and a thread pulling device are arranged on the fixing device, the thread cutting device comprises a connecting frame (201), the thread cutting device is used to cut the suture thread (5) on the skin (4), the thread pulling device comprises a fixing slide frame (301), the thread pulling device is used to pull the cut suture thread (5) out of the skin (4), and the fixing device is used to adjust the positions of the thread cutting device and the thread pulling device; The fixing device comprises an extension frame (122), a connecting frame (201) and the extension frame (122) are fixedly mounted, and a fixed sliding frame (301) and the extension frame (122) are fixedly mounted; The thread trimming device comprises a lifting block (208) and a fitting seat (206), a fixed knife (216) is fixedly mounted on the fitting seat (206), a descending slider (214) is slidably mounted on the fitting seat (206), and a movable knife (215) is fixedly mounted on the descending slider (214); The wire pulling device comprises a plurality of lifting slides (302) slidably mounted on a fixed slide (301), a docking roller (305) being rotatably mounted on the lifting slides (302), and the docking roller (305) cooperates with a lifting block (208).

2. A suture removal auxiliary device for cardiac surgery according to claim 1, characterized in that: The fixing device further comprises a traverse motor (102) fixedly mounted on the fixing seat (101); a motor wheel (103) is fixedly mounted on the motor shaft of the traverse motor (102); two transmission wheels (104) are rotatably mounted on the fixing seat (101); a transmission belt (107) is wound around the two transmission wheels (104); a transverse guide rod (106) is fixedly mounted inside the fixing seat (101); an output belt (105) is wound around the motor wheel (103) and the transmission wheel (104); a traverse seat (108) is fixedly mounted on the transmission belt (107); and the traverse seat (108) and the transverse guide rod (106) are slidably mounted.

3. A suture removal auxiliary device for cardiac surgery according to claim 2, characterized in that: A lifting motor (109) is fixedly installed in the traverse seat (108), a traverse frame (111) is fixedly installed on the traverse seat (108), a lifting screw rod (110) is rotatably installed in the traverse frame (111), the lifting screw rod (110) is fixedly installed with the motor shaft of the lifting motor (109), a lifting frame (112) is slidably installed on the traverse frame (111), an internal thread is provided on the lifting frame (112), a threaded transmission is formed between the lifting frame (112) and the lifting screw rod (110), and a roller (119) is rotatably installed on the lifting frame (112), and the roller (119) rolls along the traverse frame (111).

4. A suture removal auxiliary device for cardiac surgery according to claim 3, characterized in that: The lifting frame (112) is fixedly mounted with a pulley frame (114), a pulling motor (113) and a sliding sleeve (117); a pulley (115) is rotatably mounted on the pulley frame (114); the pulley (115) is fixedly mounted on the motor shaft of the pulling motor (113); a guide tube (118) is fixedly mounted on the lifting frame (112); an inner sliding column (120) is slidably mounted in the sliding sleeve (117); an extension frame (122) is fixedly mounted on the inner sliding column (120); a sliding column spring (121) is provided between the extension frame (122) and the lifting frame (112); a steel wire rope (116) is wound around the pulley (115); an end of the steel wire rope (116) is fixedly mounted on the extension frame (122); and the steel wire rope (116) passes through the guide tube (118).

5. The suture removal auxiliary device for cardiac surgery according to claim 1, characterized in that: The thread trimming device further comprises a fixed rack (202) fixedly mounted on the connecting frame (201); a moving seat (203) is slidably mounted on the connecting frame (201); a moving motor (207) is fixedly mounted on the moving seat (203); a lifting block (208) is fixedly mounted on the moving seat (203); a motor gear (209) is fixedly mounted on the motor shaft of the moving motor (207); a moving gear (210) is rotatably mounted on the moving seat (203); a cam (211) is fixedly mounted on the moving gear (210); the moving gear (210) is meshed with the fixed rack (202); a descending rod (212) is slidably mounted on the moving seat (203); the descending rod (212) cooperates with the cam (211); and the descending rod (212) is slidably mounted on a descending slider (214) through a waist hole.

6. A suture removal auxiliary device for cardiac surgery according to claim 5, characterized in that: A vertical sliding column (204) is fixedly mounted on the movable seat (203); the fitting seat (206) is slidably mounted on the vertical sliding column (204); a fitting spring (205) is arranged between the fitting seat (206) and the movable seat (203); and an opening spring (213) is arranged between the movable seat (203) and the descending slide block (214).

7. The suture removal auxiliary device for cardiac surgery according to claim 1, characterized in that: The wire pulling device also includes a fixed shell (304) fixedly mounted on the fixed slide (301); a lifting rod (303) fixedly mounted on the lifting slide (302); the lifting rod (303) and the fixed shell (304) are slidably mounted; a claw seat (310) is fixedly mounted on the lifting rod (303); two wire pulling claws (311) are rotatably mounted on the claw seat (310); a wire clamping spring (312) is arranged between the two wire pulling claws (311); and a compression spring (309) is arranged between the claw seat (310) and the fixed shell (304).

8. The suture removal auxiliary device for cardiac surgery according to claim 7, characterized in that: A disinfection tube (307) is fixedly mounted on the extension frame (122), disinfection alcohol is contained in the disinfection tube (307), a disinfection nozzle (308) is fixedly mounted on the disinfection tube (307), and a cylinder (306) is fixedly mounted on the extension frame (122), a piston is arranged on the top of the cylinder (306), and the piston slides in the disinfection tube (307).

9. The suture removal auxiliary device for cardiac surgery according to claim 7, characterized in that: Two clamping slopes (313) are provided at the bottom of the fixed shell (304); when the wire pulling claw (311) is located in the fixed shell (304), the wire clamping spring (312) is compressed; when the claw seat (310) extends out of the fixed shell (304), the wire clamping spring (312) rebounds and the wire pulling claw (311) opens.

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