CN116343567B - Skin tissue suturing training device - Google Patents

Abstract

The invention discloses a skin tissue suture training device, which relates to the field of medical teaching aids and comprises a human body model for suture training and a replaceable skin tissue simulation silica gel sheet arranged on the surface of the human body model, wherein a support box for supporting and storing protection is arranged at the bottom of the human body model, a lifting support column is fixedly arranged at the bottom of the support box, a fixed support column is arranged at the inner bottom of the lifting support column, a support base is fixedly connected to the bottom of the fixed support column, and an inflation mechanism and a deflation mechanism are arranged in the support base.

Description

Skin tissue suturing training device

technical field

The invention relates to the field of medical teaching aids, in particular to a skin tissue suturing training device.

Background technique

In the process of learning surgical medicine, in order to learn the suture technique of skin tissue after tumor resection, a silicone film is usually used to simulate the skin tissue of the human body, and then the film is sutured to train the suture technique.

However, most of the current simulation training has the problem that the simulation scene is not close enough to the actual surgical scene, which leads to a large difference between the training results and the actual operation effect;

The main reason for this problem is that in the process of simulation training, the film used to simulate the skin tissue of the human body is usually directly placed on the operating table, and then the operator performs simulated suturing. In this process, the operator Most of the table heights are fixed, and its height cannot be applied to trainers of different heights. At the same time, the film is usually placed on the table in a horizontal state, which does not conform to the actual human body. Therefore, a skin tissue suture training is specially provided. device to solve the above problems.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention discloses a skin tissue suturing training device to solve the problems raised in the background art above.

To achieve the above purpose, the present invention is achieved through the following technical solutions: a skin tissue suturing training device, including a human body model for suturing training and a replaceable skin tissue simulation silicone sheet installed on the surface of the human body model;

The bottom of the mannequin is provided with a support box for support and storage protection, the bottom of the support box is fixedly equipped with a lifting support column, and the inner bottom of the lifting support column is provided with a fixed support column, and the lifting support column A driving gear is arranged inside, and a tooth groove is opened inside the fixed support column, and the driving gear meshes with the tooth groove;

The bottom of the fixed support column is fixedly connected with a support base, and the interior of the support base is provided with an inflation mechanism and a deflation mechanism. Air one-way valve and suction one-way valve, a pneumatic cylinder is installed between the support box and the human body model, an air guide tube is installed between the air pressure cylinder and the intake air cylinder, and the deflation mechanism includes a deflation cylinder and Insert the deflation valve stem on the top of the deflation air cylinder, and the deflation air cylinder is installed in the middle part of the air guide tube.

Preferably, a clamping mechanism is installed on the side of the bottom end of the lifting support column, and the clamping mechanism includes a movable block and a sliding card seat installed at the end of the movable block, and a triangular card block is arranged at the front end of the sliding card seat , one end of the triangular block is engaged with the tooth groove, the other end of the triangular block is provided with a second spring, and an adjustment handle is installed on the outer surface of the driving gear.

Preferably, the outer surface of the fixed support column is provided with a chute, the sliding card seat is slidably connected to the inside of the chute, and a connecting column is fixedly connected between the sliding card seat and the movable block, and the connecting column The outer surface is movably sleeved with a first spring, and the first spring is arranged in the inner wall of the lifting support column, and the outer surface of the movable block is fixedly connected with an L-shaped handle.

Preferably, both the deflation air cylinder and the intake air cylinder are fixedly installed inside the support base, and the inner top of the air intake cylinder is movably inserted with a pressing valve rod, and the top ends of the deflation valve rod and the pressing valve rod are both Extending to the top of the support base, the air guide tube is connected with the air intake one-way valve through the deflation air cylinder.

Preferably, the inner top of the deflation air cylinder is fixedly connected with a sealing tube, the outer surface of the top end of the deflation valve stem is provided with a vent hole, and the outer surface of the bottom end of the deflation valve stem is provided with a vent hole, so The sealing tube is flexibly socketed on the outer surface of the vent hole.

Preferably, the bottom end of the pressing valve stem is fixedly connected with a first sealing piston, the bottom of the first sealing piston is provided with a fourth spring, the bottom of the deflation valve stem is fixedly connected with a stopper, and the stopper The bottom end of the block is provided with a third spring.

Preferably, protective covers are rotatably connected to both sides of the top of the support box, and a storage box is movably inserted into the inside of the support box, and a detachable storage tray is provided inside the storage box. A limit slot is provided at the inner bottom, and a limit block is fixedly connected to the bottom of the storage box, and the limit block is slidably connected to the inside of the limit slot.

Preferably, the four corners of the inner bottom of the support box are fixedly connected with hollow columns, the outer surface of the top end of the hollow column is fixedly installed with a second sealing piston, the top of the air guide tube communicates with the inside of the hollow column, and the air pressure The top of the cylinder is fixedly connected with a carrier plate, the bottom end of the air cylinder is movably socketed on the outer surface of the second sealing piston, the bottom of the carrier plate is fixedly connected with a positioning shaft, and the middle part of the storage box is provided with a positioning groove , the positioning shaft is movably inserted into the positioning slot.

Preferably, the human body model is fixedly connected to the top of the carrier board, and the inner top of the human body model is provided with an assembly groove, and the inner top of the assembly groove is fixedly connected with a fixed shaft, and the fixed shaft is movably plugged into a replaceable Type skin tissue simulates the inside of the silica gel sheet, the inner bottom of the assembly groove is provided with a ejector plate, and the interior of the human body model is provided with a ejector mechanism, and the ejector mechanism includes a movable ejector push rod. The ejector push rod is hinged at the bottom of the ejector plate.

Preferably, both sides of the interior of the mannequin are respectively provided with a sliding push rod and a sliding frame, the bottom end of the ejector push rod is articulated on the top of the sliding push rod and the sliding frame, and the sliding push rod and the sliding frame The opposite ends are fixedly connected with transmission racks, and two groups of transmission gears are arranged inside the human body model, and the transmission racks are engaged with the transmission gears, and the two ends of the sliding push rod are respectively fixedly connected with pressure rods and Insertion rod, the other end of the pressing rod extends to the outside of the human body model, the insertion rod runs through the sliding frame, and the middle outer surface of the insertion rod is movably sleeved with a fifth spring.

The invention discloses a skin tissue suturing training device, which has the following beneficial effects:

By turning the adjustment handle counterclockwise, the driving gear and the tooth groove are engaged for transmission. At this time, the lifting support column moves upward on the outer surface of the fixed support column. After adjusting to a suitable height, the operator repeatedly steps on the support base with his feet. Press the valve stem, so that the air inside the intake air cylinder is pressed into the inside of the air guide tube through the intake one-way valve, and at the same time, the external air enters the inside of the intake air cylinder through the suction one-way valve, so that the carrier plate drives the mannequin to move upward. The storage box can be adjusted in height according to the needs, and the positioning shaft can be drawn upward from the positioning slot. At this time, the storage box can be pulled out, and then the storage tray with the suture simulation equipment placed on it can be taken out, and then the storage box can be removed. The tray is placed inside the protective cover, so that it is convenient to take the corresponding instruments during the suture simulation training process, so as to facilitate precise height adjustment during the suture simulation process.

Place the replaceable skin tissue simulation silicone sheet used for simulation training into the assembly slot to make it fit the human body model, so as to better fit the real surgical scene for simulation training. After the suture training is completed, it can be used to Push the pressing rod to the inside, so that the ejector plate lifts up, and at this time, the ejector plate ejects the replaceable skin tissue simulation silicone sheet from the inside of the assembly groove, which is convenient for replacing the replaceable skin tissue simulation silicone sheet for subsequent simulations Training, easy operation, more realistic simulation.

By installing a clamping mechanism on the side of the bottom end of the lifting support column, when the lifting support column moves upward, the inclined surface at the top of the triangular clamping block contacts the tooth groove, so that the triangular clamping block is pushed into the inside of the sliding clamping seat. When the second spring is compressed, when it is adjusted to a suitable height, stop turning the adjustment handle. At this time, the lifting support column has a tendency to move downward. It is stuck in the designated position to avoid automatic fall, and at the same time, pull the L-shaped handle outward after use, so that the support box and lifting support column slide down to complete the reset of the entire device.

Description of drawings

Fig. 1 is a schematic diagram of the overall outer surface structure of the present invention;

Fig. 2 is a schematic diagram of the overall top structure of the present invention;

Fig. 3 is a cross-sectional view of the outer surface structure of the bottom end of the lifting support column of the present invention;

Fig. 4 is a schematic diagram of the structure of the outer surface of the movable block of the present invention;

Fig. 5 is a sectional view of the internal structure of the deflation air cylinder and the air intake air cylinder of the present invention;

Fig. 6 is a schematic diagram of the structure of the outer surface of the support box of the present invention;

Fig. 7 is the exploded schematic view of the structure of the outer surface of the human body model of the present invention;

Fig. 8 is a schematic diagram of the bottom structure of the carrier board of the present invention;

Fig. 9 is a sectional view of the internal structure of the human body model of the present invention.

In the figure: 1. Human body model; 2. Support box; 3. Lifting support column; 4. Fixed support column; 5. Support base; ; 9, storage tray; 10, protective cover; 11, driving gear; 12, adjustment handle; 131, movable block; 132, connecting column; 133, first spring; 134, sliding deck; , second spring; 137, L-shaped handle; 14, chute; 151, deflation gas cylinder; 152, deflation valve rod; 153, block; 154, vent hole; 155, vent hole; 156, sealing tube; 157, the third spring; 161, the air intake cylinder; 162, press the valve stem; 163, the suction check valve; 164, the first sealing piston; 165, the fourth spring; 166, the intake check valve; 17, the tooth Groove; 18, limit block; 19, limit groove; 20, hollow column; 21, second sealing piston; 22, positioning groove; 23, assembly groove; 24, fixed shaft; 25, top plate; 26, load Plate; 27, air cylinder; 28, positioning shaft; 291, pressure rod; 292, sliding push rod; 293, sliding frame; 294, transmission gear; 295, ejector push rod; ; 298, transmission rack.

Detailed ways

The embodiment of the present invention discloses a skin tissue suturing training device, as shown in Figures 1-9, in order to make the purpose, technical solution and advantages of the embodiment of the present invention more clear, the following will be combined with the accompanying drawings in the present invention, and through the embodiment way, clearly and completely describe the technical solutions in the embodiments of the present invention.

Embodiment one:

As shown in Figures 1-9, the skin tissue suturing training device includes a human body model 1 for suturing training and a replaceable skin tissue simulation silicone sheet 7 installed on the surface of the human body model 1;

The bottom of the mannequin 1 is provided with a support box 2 for support and storage protection, the bottom of the support box 2 is fixedly installed with a lifting support column 3, and the inner bottom of the lifting support column 3 is provided with a fixed support column 4, and the inside of the lifting support column 3 A driving gear 11 is provided, and a tooth groove 17 is provided inside the fixed support column 4, and the driving gear 11 meshes with the tooth groove 17;

The bottom of the fixed support column 4 is fixedly connected with a support base 5, and the inside of the support base 5 is provided with an inflation mechanism and a deflation mechanism. One-way valve 166 and suction one-way valve 163, air pressure cylinder 27 is installed between support box 2 and mannequin 1, air guide tube 6 is installed between air pressure cylinder 27 and intake air cylinder 161, deflation mechanism comprises deflation air cylinder 151 and the deflation valve stem 152 inserted in the top of the deflation gas cylinder 151, the deflation gas cylinder 151 is installed in the middle part of the air guide tube 6.

The bottom side of the lifting support column 3 is equipped with a snap-in mechanism, and the snap-in mechanism includes a movable block 131 and a sliding deck 134 installed on the end of the movable block 131, and the front end of the sliding deck 134 is provided with a triangular block 135, and the triangular snap One end of the block 135 is movably clamped with the tooth groove 17, the other end of the triangular block 135 is provided with a second spring 136, the outer surface of the drive gear 11 is equipped with an adjustment handle 12, the top of the triangular block 135 is an inclined surface, and the bottom of the triangular block 135 is inclined. for the horizontal plane.

The outer surface of the fixed support column 4 is provided with a chute 14, and the sliding card seat 134 is slidably connected in the inside of the chute 14, and the connecting column 132 is fixedly connected between the sliding card seat 134 and the movable block 131, and the outer surface of the connecting column 132 is movable. The first spring 133 is sleeved, and the first spring 133 is arranged in the inner wall of the lifting support column 3 , and the outer surface of the movable block 131 is fixedly connected with an L-shaped handle 137 .

The deflation air cylinder 151 and the intake air cylinder 161 are all fixedly mounted on the inside of the support base 5, and the inner top of the air intake cylinder 161 is movably inserted with a pressing valve rod 162, and the tops of the deflation valve rod 152 and the pressing valve rod 162 all extend to The top of the support base 5 is connected with the air intake check valve 166 through the deflation air cylinder 151 .

The inner top of the deflation gas cylinder 151 is fixedly connected with a sealing pipe 156, and the top outer surface of the deflation valve stem 152 is provided with a vent hole 154, and the bottom outer surface of the deflation valve stem 152 is provided with a vent hole 155, and the sealing pipe 156 is movable. It is sleeved on the outer surface of the vent hole 155 .

The bottom of the pressing valve rod 162 is fixedly connected with a first sealing piston 164, the bottom of the first sealing piston 164 is provided with a fourth spring 165, the bottom of the deflation valve rod 152 is fixedly connected with a stopper 153, and the bottom of the stopper 153 A third spring 157 is provided.

Both sides of the top of the support box 2 are rotatably connected with a protective cover 10, the inside of the support box 2 is movably plugged with a storage box 8, the inside of the storage box 8 is provided with a detachable storage tray 9, and the inner bottom of the support box 2 is provided with a limited The position slot 19 is fixedly connected to the limit block 18 at the bottom of the storage box 8 , and the limit block 18 is slidably connected to the inside of the limit slot 19 .

The four corners of the inner bottom of the support box 2 are fixedly connected with hollow columns 20, and the outer surface of the top of the hollow columns 20 is fixedly equipped with a second sealing piston 21. Connected with a carrier plate 26, the bottom end of the air cylinder 27 is movably socketed on the outer surface of the second sealing piston 21, the bottom of the carrier plate 26 is fixedly connected with a positioning shaft 28, and the middle part of the storage box 8 is provided with a positioning groove 22, and the positioning shaft 28 is movably inserted in the inside of the positioning groove 22.

The human body model 1 is fixedly connected to the top of the carrier plate 26, and the inner top of the human body model 1 is provided with an assembly groove 23, and the inner top of the assembly groove 23 is fixedly connected with a fixed shaft 24, and the fixed shaft 24 is movably inserted into the replaceable skin tissue simulation Inside the silica gel sheet 7, the inner bottom of the assembly groove 23 is provided with a top material plate 25, and the inside of the mannequin 1 is provided with a top material mechanism, the top material mechanism includes a movable top material push rod 295, and the top material push rod 295 is movable and hinged. At the bottom of the top plate 25.

The inner two sides of mannequin 1 are respectively provided with slide push rod 292 and slide frame 293, and the bottom end of ejector push rod 295 is hinged on the top of slide push rod 292 and slide frame 293, and slide push rod 292 and slide frame 293 are opposite. One end of each is fixedly connected with a transmission rack 298, and the inside of the mannequin 1 is provided with two sets of transmission gears 294, the transmission rack 298 is meshed with the transmission gear 294, and the two ends of the sliding push rod 292 are respectively fixedly connected with a pressure rod 291 and The other end of the insertion rod 297 and the pressing rod 291 extend to the outside of the mannequin 1 , the insertion rod 297 runs through the sliding frame 293 , and the middle outer surface of the insertion rod 297 is movably fitted with a fifth spring 296 .

Working principle: when the device is in use, first place the support base 5 in the corresponding position, and then turn the adjustment handle 12 counterclockwise to make the drive gear 11 mesh with the tooth groove 17. At this time, the lifting support column 3 is fixedly supporting The outer surface of the column 4 moves upwards, and at the same time, the inclined surface at the top of the triangular clamping block 135 is in contact with the tooth groove 17, so that the triangular clamping block 135 is pushed into the inside of the sliding clamp 134, and the second spring 136 is now Compression, when adjusted to a suitable height, stop turning the adjustment handle 12, at this time the lifting support column 3 has a tendency to move downward, at this time, the horizontal plane at the bottom of the triangular block 135 is offset against the tooth groove 17, so that the lifting support column 3 Be stuck in the designated position to avoid automatic falling;

By flipping and opening the protective cover 10 on the top of the support box 2 to both sides, the operator steps on the pressing valve rod 162 on the supporting base 5, so that the pressing valve rod 162 drives the first sealing piston 164 to move downward, so that the fourth The spring 165 is compressed, and at this time, the air inside the intake air cylinder 161 is pressed into the interior of the air guide tube 6 through the intake check valve 166, and enters the interior of the air pressure cylinder 27 through the hollow column 20 upwards, and then releases the pressing valve rod 162 , at this time, under the action of the fourth spring 165, the first sealing piston 164 moves upward, so that the inside of the air intake cylinder 161 forms a negative pressure, and at this time, the external air enters the inside of the air intake cylinder 161 through the suction one-way valve 163, In this way, through repeated stepping, the air pressure inside the air cylinder 27 is gradually increased, so that the air pressure cylinder 27 moves upwards from the inside of the support box 2, so that the carrier plate 26 drives the human body model 1 to move upwards out of the support box 2, and the height can be adjusted according to requirements. precise adjustment;

Simultaneously in above-mentioned process, along with carrier plate 26 moves upwards, the positioning shaft 28 of its bottom is upwardly drawn out from positioning groove 22 inside, and this moment can be outwardly drawn out storage box 8, then puts the storage tray of suturing simulation equipment 9 is taken out, and then the storage tray 9 is placed inside the protective cover 10, so that it is convenient to take the corresponding instruments during the suture simulation training;

At this time, the operator can place the replaceable skin tissue simulation silicone sheet 7 used for simulation training into the assembly groove 23 so that it fits with the human body model 1, and at the same time, the fixed shaft 24 is inserted into the replaceable skin tissue simulation The position of the inside of the silicone sheet 7 is fixed, and then the operator can perform suturing training on the replaceable skin tissue simulation silicone sheet 7, so as to better fit the real surgical scene for simulation training;

Simultaneously after the suturing training is completed, the sliding push rod 292 can be moved inwardly by pushing the depression bar 291 to the inside. The group of transmission gears 294 rotates in the opposite direction. At this time, the two groups of transmission gears 294 are engaged with the transmission racks 298 at both ends of the sliding frame 293, so that the sliding frame 293 moves toward the end near the sliding push rod 292, and the fifth spring 296 is compressed, and the bottom ends of the push rods 295 on both sides move to the middle, so that the top pushes up the top plate 25. At this time, the top plate 25 pushes the replaceable skin tissue simulation silicone sheet 7 out of the assembly groove 23. The inside is ejected to facilitate the replacement of the replaceable skin tissue simulation silicone sheet 7 for subsequent simulation training, and then release the pressing rod 291, and under the action of the fifth spring 296, the sliding frame 293 and the sliding push rod 292 move to the opposite side , so that the ejector plate 25 moves downward to reset;

After the simulated training is over, by placing the storage tray 9 inside the storage box 8, then the storage box 8 is pushed into the inside of the support box 2, and then by stepping on the deflation valve rod 152, the bottom end of the deflation valve rod 152 Moving downward, the vent hole 155 moves downward from the inside of the sealing tube 156. At this time, the air in the air cylinder 27 enters the inside of the vent valve stem 152 through the vent hole 155, and then is discharged outward through the vent hole 154 to This makes the mannequin 1 move down and reset to enter the inside of the support box 2, and then turn the two groups of protective covers 10 to the middle and close them on the top of the support box 2 for protection;

Then, by pulling the L-shaped handle 137 outward, the slide holder 134 moves outward for a certain distance, so that the first spring 133 is compressed, and at this time, the triangular clamping block 135 moves out from the inside of the tooth groove 17. At this time, under the action of gravity, The support box 2 and the lifting support column 3 slide down to complete the reset of the whole device.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. What are described in the above-mentioned embodiments and the description only illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have Variations and improvements are possible, which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The skin tissue suture training device comprises a human body model (1) for suture training and a replaceable skin tissue simulation silica gel sheet (7) arranged on the surface of the human body model (1);

the method is characterized in that: the human body model is characterized in that a support box (2) for supporting and accommodating protection is arranged at the bottom of the human body model (1), a lifting support column (3) is fixedly arranged at the bottom of the support box (2), a fixed support column (4) is arranged at the inner bottom of the lifting support column (3), a driving gear (11) is arranged in the lifting support column (3), a tooth groove (17) is formed in the fixed support column (4), and the driving gear (11) is meshed with the tooth groove (17);

the bottom of the fixed support column (4) is fixedly connected with a support base (5), an air charging mechanism and an air discharging mechanism are arranged in the support base (5), the air charging mechanism comprises an air charging air cylinder (161) used for charging air, an air charging one-way valve (166) and an air sucking one-way valve (163) which are arranged on two sides of the air charging air cylinder (161), an air pressure cylinder (27) is arranged between the support box (2) and the mannequin (1), an air guide pipe (6) is arranged between the air pressure cylinder (27) and the air charging air cylinder (161), the air discharging mechanism comprises an air discharging air cylinder (151) and an air discharging valve rod (152) which is inserted into the inner top of the air discharging air cylinder (151), and the air discharging air cylinder (151) is arranged in the middle of the air guide pipe (6);

the air discharge air cylinder (151) and the air inlet air cylinder (161) are fixedly arranged in the support base (5), a pressing valve rod (162) is movably inserted into the inner top of the air inlet air cylinder (161), the top ends of the air discharge valve rod (152) and the pressing valve rod (162) extend to the top of the support base (5), and the air guide pipe (6) is connected with an air inlet one-way valve (166) through the air discharge air cylinder (151);

the inner top of the air release cylinder (151) is fixedly connected with a sealing pipe (156), an exhaust hole (154) is formed in the outer surface of the top end of the air release valve rod (152), an air release hole (155) is formed in the outer surface of the bottom end of the air release valve rod (152), and the sealing pipe (156) is movably sleeved on the outer surface of the air release hole (155);

the bottom end of the pressing valve rod (162) is fixedly connected with a first sealing piston (164), a fourth spring (165) is arranged at the bottom of the first sealing piston (164), a stop block (153) is fixedly connected with the bottom of the air release valve rod (152), and a third spring (157) is arranged at the bottom end of the stop block (153);

the novel storage box is characterized in that the two sides of the top of the supporting box (2) are rotatably connected with a protective cover (10), a storage box (8) is movably inserted into the supporting box (2), a separable storage tray (9) is arranged in the storage box (8), a limit groove (19) is formed in the inner bottom of the supporting box (2), a limit block (18) is fixedly connected to the bottom of the storage box (8), and the limit block (18) is slidably connected in the limit groove (19);

the inner bottom four corners of support box (2) are all fixedly connected with hollow post (20), the top surface fixed mounting of hollow post (20) has second sealed piston (21), the top of air duct (6) is linked together with hollow post (20) inside, the top fixedly connected with support plate (26) of pneumatic cylinder (27), the bottom activity of pneumatic cylinder (27) cup joints the surface at second sealed piston (21), the bottom fixedly connected with locating shaft (28) of support plate (26), constant head tank (22) have been seted up at the middle part of receiver (8), inside at constant head tank (22) is pegged graft in the activity of locating shaft (28).

2. The skin tissue suture training device of claim 1, wherein: the lifting support column is characterized in that a clamping mechanism is arranged on the side face of the bottom end of the lifting support column (3), the clamping mechanism comprises a movable block (131) and a sliding clamping seat (134) arranged at the end part of the movable block (131), a triangular clamping block (135) is arranged at the front end of the sliding clamping seat (134), one end of the triangular clamping block (135) is movably clamped with a tooth slot (17), a second spring (136) is arranged at the other end of the triangular clamping block (135), and an adjusting handle (12) is arranged on the outer surface of the driving gear (11).

3. The skin tissue suture training device of claim 2, wherein: the utility model discloses a lifting support column, including fixed support column (4), sliding connection, movable block (131), fixed support column (4), sliding connection (14) have been seted up to the surface of fixed support column (4), inside sliding connection at sliding connection (14), fixedly connected with spliced pole (132) between sliding connection (134) and movable block (131), first spring (133) have been cup jointed in the surface activity of spliced pole (132), and first spring (133) set up in the inside wall of lifting support column (3), the surface fixedly connected with L shape handle (137) of movable block (131).

4. The skin tissue suture training device of claim 1, wherein: the utility model discloses a human body model, including support plate (26), manikin (1), assembly groove (23) have been seted up at the top of support plate (26) to manikin (1), the interior top fixedly connected with fixed axle (24) of assembly groove (23), fixed axle (24) activity are pegged graft in the inside of interchangeable skin tissue simulation silica gel piece (7), the interior bottom of assembly groove (23) is provided with liftout board (25), the inside of manikin (1) is provided with liftout mechanism, liftout mechanism includes mobilizable liftout push rod (295), liftout push rod (295) swing joint is in the bottom of liftout board (25).

5. The skin tissue suture training device of claim 4, wherein: the inside both sides of manikin (1) are provided with sliding push rod (292) and carriage (293) respectively, the bottom activity of liftout push rod (295) articulates the top at sliding push rod (292) and carriage (293), the equal fixedly connected with drive rack (298) of the relative one end of sliding push rod (292) and carriage (293), the inside of manikin (1) is provided with two sets of drive gears (294), drive rack (298) meshes with drive gear (294), the both ends of sliding push rod (292) are fixedly connected with depression bar (291) and inserted bar (297) respectively, the other end of depression bar (291) extends to the outside of manikin (1), inserted bar (297) run through carriage (293), and the middle part surface activity of inserted bar (297) has cup jointed fifth spring (296).