CN114515172A - Chest surgery thorax distraction device - Google Patents

Abstract

The invention relates to a chest expanding device for chest core surgery, which comprises a first main rod and a second main rod which are parallel to each other, wherein a rack is fixed on one side of the front end of the first main rod through a bolt, an installation opening is formed in the second main rod, the rack is arranged in the installation opening in a penetrating manner, a first shaft rod is rotatably connected in the bottom of the installation opening through a bearing, the top of the first shaft rod penetrates through the second main rod, a toothed ring is sleeved and fixed on the first shaft rod and is meshed with the rack, hook plates are fixed on the bottoms of the first main rod and the second main rod through bolts, the cross sections of the hook plates are arc-shaped, a sliding groove is formed in the outer side of the rack, a sliding block is slidably connected in the sliding groove, the sliding block is fixed on the inner wall of one side of the installation opening, which is far away from the toothed ring, a knob is connected with one side of the second main rod, which is far away from the toothed ring, through a thread, and penetrates through the sliding block; the invention utilizes the two hook plates to gradually open the incision, and the operation visual field is completely exposed between the first main rod and the second main rod by screwing the knob for fixation.

Description

Chest surgery thorax distraction device

Technical Field

The invention relates to the technical field of surgical instruments, in particular to a chest expanding device for chest surgery.

Background

Cardiothoracic surgery also encompasses cardiac surgery and general thoracic surgery for study of trauma to the great vessels of the heart, pericardial disease, congenital heart disease, acquired valvular heart disease, ischemic heart disease, cardiac tumors, great vessel disease, interventional therapy, surgical treatment of cardiac arrhythmias, cardiac pacing and implantable defibrillation cardioverters, dynamic cardiomyopathy, heart, lung, and heart-lung transplants, and the like.

In the chest surgery, an operation channel is generally required to be established between adjacent ribs, then a distraction device is used for distracting gaps between the ribs to fully expose an operation visual field, and the rib surgery is closed after the operation is finished.

In order to solve the problems, the invention provides a chest distraction device for chest surgery.

Disclosure of Invention

The invention aims to overcome the problem that the conventional distraction device has small exposure degree to an operation visual field, and provides a thoracic surgery thoracic cavity distraction device to solve the technical problem.

In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:

chest heart surgery thorax distraction device, including first mobile jib and the second mobile jib that is parallel to each other, there is the rack first mobile jib front end one side through the bolt fastening, the installing port has been seted up on the second mobile jib, the rack is worn to locate in the installing port, the installing port bottom is inside to rotate through the bearing and is connected with first axostylus axostyle, the second mobile jib is run through at first axostylus axostyle top, the cover is established and is fixed with the ring gear on the first axostylus axostyle, ring gear and rack toothing are connected, the bottom of first mobile jib and second mobile jib all is equipped with the hook plate through the bolt fastening, the hook plate cross-section sets to the arc, the spout has been seted up in the rack outside, sliding connection has the slider in the spout, the slider is fixed in one side inner wall that the ring gear was kept away from to the installing port through the bolt fastening, one side threaded connection that the ring was kept away from to the second mobile jib has the knob, the knob runs through the slider.

Preferably, the movable opening has all been seted up to one side that the rack was kept away from to first mobile jib and second mobile jib, is provided with branch pole in the movable opening, divides the pole top to be provided with slide adjusting mechanism, and slide adjusting mechanism is connected with the second axostylus axostyle, and first mobile jib is run through at second axostylus axostyle top, is provided with fixed establishment on the second axostylus axostyle, divides to be provided with contact mechanism on the pole, and the position mouth of letting has all been seted up to one side that movable opening top and bottom inner wall are close to the hook plate.

Preferably, the sliding adjusting mechanism comprises a guide block, a guide groove is formed in the top of the branch rod, the guide block is connected in the guide groove in a sliding mode, and the second shaft rod is fixed to the top of the guide block through a bolt.

Preferably, the fixing mechanism comprises a hand wheel, the hand wheel is connected to the second shaft rod in a threaded mode, and the hand wheel is located above the first main rod.

Preferably, contact mechanism includes the cylinder, divides the pole bottom to keep away from one side of first mobile jib and has seted up the mounting groove, and the guide slot has all been seted up to mounting groove both sides inner wall, and sliding connection has the guide block in the guide slot, has same ring through the bolt fastening between two guide blocks, and the cylinder sets up in the below of ring, and the ring is connected with elevating system.

Preferably, elevating system includes the fixed column, and the fixed column passes through the bolt fastening in the top of minute pole, and fixed column top runs through and is connected with first screw rod, first screw rod and ring threaded connection through the bearing rotation.

Preferably, the bottom of the circular ring is provided with a ring groove, a movable ring is connected in the ring groove in a sliding manner, and the movable ring and the roller are fixed by welding.

Preferably, the whole drum that is hourglass form, and drum circumference outer wall is provided with the protruding layer of antiskid of multiunit longitudinal symmetry distribution, and the thickness of a plurality of protruding layers of antiskid is by centre to both ends grow gradually big.

Preferably, the inner end face of the branch rod is welded and fixed with sleeve blocks, the same fixed angle mechanism is inserted between the two sleeve blocks, the fixed angle mechanism comprises a handle, a rotating shaft at the bottom of the handle is connected with two fixed angle rods which are symmetrically distributed front and back, the inner end face of each fixed angle rod is connected with an extension rod through a bearing in a rotating mode, the same adjusting sleeve rod is sleeved between the two extension rods, the inner wall of one side of the adjusting sleeve rod is fixed with a fixed block through bolts, the fixed block is connected with a bidirectional screw rod through a bearing in a rotating mode, the bidirectional screw rod is in threaded connection with the extension rod, a first bevel gear is fixedly sleeved on the bidirectional screw rod, the outer side of the adjusting sleeve rod is connected with a third shaft rod through a bearing in a rotating mode, the inner side of the third shaft rod is fixed with a second bevel gear through bolts, and the second bevel gear is in meshed connection with the first bevel gear.

Preferably, the inner wall of one side of the adjusting sleeve rod is provided with two orientation grooves which are symmetrically distributed front and back, an orientation block is connected in the orientation grooves in a sliding mode, and the orientation block and the extension rod are fixed through bolts.

Has the beneficial effects that:

1. put into the thorax incision with two hook plates simultaneously in, then rotate first axostylus axostyle and ring gear, ring gear meshing drives the rack and removes to the one end of keeping away from the second mobile jib for first mobile jib and second mobile jib form the motion trend of expansion, struts the incision gradually through two hook plates then, the back is confirmed in the operation field of vision, through screwing up the knob, fix between rack and the second mobile jib, can expose the operation field of vision completely between first mobile jib and second mobile jib, the doctor of being convenient for performs the operation.

2. The branch rod is rotated out of the movable port, the first screw rod is rotated to enable the circular ring to move downwards along the guide block along the guide groove, the movable ring and the roller are driven to move downwards synchronously, the roller can be contacted with the incision corners, the branch rod is continuously adjusted, the incision corners are propped open through the roller, after the operation visual field is determined, the hand wheel is screwed down, the position of the branch rod can be fixed, the incision corners can be propped open continuously through the branch rod according to requirements, the operation visual field is further exposed, the operation process is facilitated, the rotary connection is formed between the roller and the circular ring, the injury of the roller to muscle tissues can be reduced when the incision is propped open, the roller is arranged in a hourglass shape, the muscle tissues can be accumulated at the sunken part of the outer wall of the roller, the anti-skid effect can be improved, the anti-skid convex layers are arranged, the thicknesses of the anti-skid convex layers are gradually increased from the middle to two ends, can further improve anti-skidding effect, divide the pole through being provided with two, can be according to the operation needs, to the strutting of incision edge formation different positions and direction, if need not strut to incision edge position, can reset the branch pole in the movable wall, the fixed column can enter into the mouth of stepping down this moment, divide the pole to fix through screwing up the handle wheel, the first screw rod of antiport contracts the cylinder in the mounting groove, can carry out convenient accomodating.

3. Hold the handle, insert two fixed angle poles in the cover block that corresponds, then rotate third axostylus axostyle and second bevel gear, second bevel gear meshing drives first bevel gear and two-way screw rod and rotates, make two extension rods carry out the removal that is close to each other or keeps away from, then adjust two fixed angle poles and the angle that opens of minute pole simultaneously through the extension rod, control the pulling handle, can stimulate two minute poles simultaneously and remove, thereby be convenient for two minute poles prop open the regulation to the edge of a cut in step, after screwing up two hand wheels, take away the handle can.

Drawings

FIG. 1 is a schematic view of the overall structure of the chest distraction device of the chest surgery of the present invention;

FIG. 2 is a schematic side view of a rack of the chest distraction device of thoracic surgery of the present invention;

FIG. 3 is a schematic view of the rod-separating structure of the chest distraction device for chest surgery according to the present invention;

FIG. 4 is a sectional structural view of the rod of the chest distraction device for chest surgery of the present invention;

FIG. 5 is a schematic view of the roller mounting structure of the chest distraction device for chest surgery according to the present invention;

FIG. 6 is a schematic view of the structure of the roller of the chest expanding device for chest surgery of the present invention;

FIG. 7 is a schematic view of the internal structure of an adjusting sleeve rod of the chest distraction device of the chest heart surgery of the invention;

Fig. 8 is an enlarged structural view of the thoracic surgery thoracic cavity distractor device of the present invention, corresponding to the position a of fig. 7;

fig. 9 is a schematic structural view of an adjusting loop bar of the chest expanding device for chest surgery of the invention.

The reference numbers are as follows:

1. a first main bar; 2. a second main bar; 3. a rack; 4. an installation port; 5. a first shaft lever; 6. a toothed ring; 7. a hook plate; 8. a chute; 9. a slider; 10. a knob; 11. a movable opening; 12. separating rods; 13. a guide groove; 14. a guide block; 15. a second shaft lever; 16. a hand wheel; 17. mounting grooves; 18. a guide groove; 19. a guide block; 20. a circular ring; 21. a drum; 22. fixing a column; 23. a first screw; 24. a ring groove; 25. a movable ring; 26. an anti-slip convex layer; 27. a let position port; 28. a handle; 29. a fixed angle bar; 30. sleeving blocks; 31. adjusting the loop bar; 32. a fixed block; 33. a bidirectional screw; 34. an extension rod; 35. a first bevel gear; 36. a third shaft lever; 37. a second bevel gear; 38. a directional tank; 39. and (5) orienting the blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The invention will be further illustrated with reference to the following figures 1 to 9 and examples:

in the embodiment, as shown in fig. 1-6, the thoracic surgery thoracic cavity distractor comprises a first main rod 1 and a second main rod 2 which are parallel to each other, a rack 3 is fixed on one side of the front end of the first main rod 1 through a bolt, an installation opening 4 is formed in the second main rod 2, the rack 3 penetrates through the installation opening 4, a first shaft rod 5 is rotatably connected inside the bottom of the installation opening 4 through a bearing, the top of the first shaft rod 5 penetrates through the second main rod 2, a toothed ring 6 is sleeved and fixed on the first shaft rod 5, the toothed ring 6 is meshed and connected with the rack 3, hook plates 7 are fixed on the bottoms of the first main rod 1 and the second main rod 2 through bolts, the cross sections of the hook plates 7 are arc-shaped, a chute 8 is formed in the outer side of the rack 3, a sliding block 9 is slidably connected in the chute 8, the sliding block 9 is fixed on the inner wall of the installation opening 4 far away from the toothed ring 6 through a bolt, a knob 10 is connected with one side of the second main rod 2 far away from the toothed ring 6 through a thread, the knob 10 penetrates the slider 9.

Further, the movable opening 11 has all been seted up to one side that rack 3 was kept away from to first mobile jib 1 and second mobile jib 2, be provided with branch pole 12 in the movable opening 11, divide pole 12 top to be provided with slide adjusting mechanism, slide adjusting mechanism is connected with second axostylus axostyle 15, first mobile jib 1 is run through at second axostylus axostyle 15 top, be provided with fixed establishment on the second axostylus axostyle 15, be provided with contact mechanism on the branch pole 12, one side that movable opening 11 top and bottom inner wall are close to hook plate 7 has all been seted up and has been let a mouthful 27, branch pole 12 of can being convenient for carries out nimble removal.

Further, slide adjusting mechanism includes guide block 14, divides 12 tops of pole to have seted up guide way 13, and guide block 14 sliding connection is in guide way 13, and second axostylus axostyle 15 passes through the bolt fastening in guide block 14's top, can improve the displacement range who divides pole 12.

Further, the fixing mechanism comprises a hand wheel 16, the hand wheel 16 is connected to the second shaft rod 15 in a threaded mode, and the hand wheel 16 is located above the first main rod 1, so that the branch rod 12 can be fixed.

Further, contact mechanism includes cylinder 21, and the mounting groove 17 has been seted up to one side of keeping away from first mobile jib 1 in branch pole 12 bottom, and guide slot 18 has all been seted up to mounting groove 17 both sides inner wall, and sliding connection has guide block 19 in the guide slot 18, has same ring 20 through the bolt fastening between two guide blocks 19, and cylinder 21 sets up in the below of ring 20, and ring 20 is connected with elevating system, can be through cylinder 21 and musculature contact, is convenient for strut the incision.

Further, elevating system includes fixed column 22, and fixed column 22 passes through the bolt fastening in the top of minute pole 12, and fixed column 22 top runs through and is connected with first screw rod 23 through the bearing rotation, and first screw rod 23 and ring 20 threaded connection can accomodate cylinder 21.

Furthermore, the bottom of the ring 20 is provided with a ring groove 24, a movable ring 25 is connected in the ring groove 24 in a sliding manner, and the movable ring 25 and the roller 21 are welded and fixed, so that the damage to muscle tissues can be reduced.

Further, the whole hourglass form that is of cylinder 21, and cylinder 21 circumference outer wall is provided with the protruding layer 26 of antiskid of multiunit longitudinal symmetry distribution, and the thickness of the protruding layer 26 of a plurality of antiskid is gradually big to both ends by the centre, can improve anti-skidding effect.

In this embodiment, referring to fig. 1 and fig. 7-9, the inner end surface of the branch rod 12 is welded and fixed with sleeve blocks 30, the same angle fixing mechanism is inserted between the two sleeve blocks 30, the angle fixing mechanism includes a handle 28, two angle fixing rods 29 symmetrically distributed in front and back are connected to a rotating shaft at the bottom of the handle 28, the inner end surface of the angle fixing rod 29 is rotatably connected with extension rods 34 through bearings, the same adjusting sleeve rod 31 is sleeved between the two extension rods 34, a fixing block 32 is fixed to the inner wall of one side of the adjusting sleeve rod 31 through bolts, a bidirectional screw 33 is rotatably connected to the fixing block 32 through bearings, the bidirectional screw 33 is in threaded connection with the extension rods 34, a first bevel gear 35 is fixedly sleeved on the bidirectional screw 33, a third shaft 36 is rotatably connected to the outer side of the adjusting sleeve rod 31 through bearings, a second bevel gear 37 is fixed to the inner side of the third shaft 36 through bolts, the second bevel gear 37 is in meshed connection with the first bevel gear 35, the two branch rods 12 can be synchronously adjusted to move.

Further, two front and back symmetric distribution's directional groove 38 are seted up to regulation loop bar 31 one side inner wall, and sliding connection has directional block 39 in directional groove 38, passes through the bolt fastening between directional block 39 and the extension rod 34, can carry out spacing removal to extension rod 34.

Put into the thorax incision simultaneously with two hook plates 7, then rotate first axostylus axostyle 5 and ring gear 6, ring gear 6 meshes and drives rack 3 and remove to the one end of keeping away from second mobile jib 2, make first mobile jib 1 and second mobile jib 2 form the motion trend of expansion, then strut the incision gradually through two hook plates 7, the back is confirmed to the operation field of vision, through screwing up knob 10, with fixing between rack 3 and the second mobile jib 2, can expose the operation field of vision completely between first mobile jib 1 and second mobile jib 2, the doctor of being convenient for performs the operation.

Furthermore, the branch rod 12 is rotated out of the movable opening 11, the first screw 23 is rotated, the ring 20 moves downwards along the guide groove 18 along with the guide block 19, the movable ring 25 and the roller 21 are synchronously driven to move downwards, the roller 21 can be contacted with the incision corners, the branch rod 12 is continuously adjusted, the incision corners are expanded through the roller 21, after the operation visual field is determined, the hand wheel 16 is screwed down, the position of the branch rod 12 can be fixed, the incision corners can be further expanded through the branch rod 12 as required, the operation visual field is further exposed, the operation process is facilitated, the roller 21 and the ring 20 form rotary connection, the injury of the roller 21 to muscle tissues can be reduced when the incision is expanded, the roller 21 is arranged in an hourglass shape, the muscle tissues can be accumulated at the sunken part of the outer wall of the roller 21, the anti-slip effect can be improved, and be provided with anti-skidding convex layer 26, the thickness of a plurality of anti-skidding convex layers 26 is gradually big to both ends by the centre, can further improve anti-skidding effect, through being provided with two minute poles 12, can be according to the operation needs, to the strutting of incision edge formation different positions and direction, if need not strut to incision edge position, can reset branch pole 12 in the activity mouth 11, fixed column 22 can enter into the mouth of stepping down 27 this moment, fix branch pole 12 through screwing up hand wheel 16, first screw rod 23 of reverse rotation, shrink cylinder 21 in mounting groove 17, can carry out convenient accomodating.

Furthermore, the handle 28 is held, the two fixed angle rods 29 are inserted into the corresponding sleeve blocks 30, then the third shaft rod 36 and the second bevel gear 37 are rotated, the second bevel gear 37 is meshed with the first bevel gear 35 and the bidirectional screw 33 to drive the two extension rods 34 to move close to or away from each other, then the extension rods 34 are used for simultaneously adjusting the opening angles of the two fixed angle rods 29 and the opening angles of the two fixed angle rods 12, the handle 28 is pulled left and right, the two opening rods 12 can be pulled simultaneously to move, therefore, the two opening rods 12 can be synchronously opened and adjusted in the opening angle, and the handle 28 can be taken away by screwing the two hand wheels 16.

The working principle is as follows: when the device is used, the two hook plates 7 are simultaneously placed into a thoracic cavity incision, the first shaft rod 5 and the toothed ring 6 are rotated, the toothed ring 6 is meshed with the end away from the second main rod 2 to drive the rack 3 to move, so that the first main rod 1 and the second main rod 2 form an expanding movement trend, the incision is gradually expanded through the two hook plates 7, after an operation visual field is determined, the rack 3 and the second main rod 2 are fixed by screwing the knob 10, the operation visual field can be completely exposed between the first main rod 1 and the second main rod 2, a doctor can conveniently perform an operation, the branch rod 12 is further rotated out from the movable opening 11, the first screw 23 is rotated, the circular ring 20 is enabled to move downwards along the guide groove 18, the movable ring 25 and the roller 21 are synchronously driven to move downwards, the roller 21 can be used to be contacted with the edge of the incision, and then the branch rod 12 is continuously adjusted, the incision corners are stretched through the roller 21, after the operation visual field is determined, the hand wheel 16 is screwed, the positions of the branch rods 12 can be fixed, so that the incision corners can be continuously stretched through the branch rods 12 as required, the operation visual field is further exposed, the operation process is convenient, the roller 21 and the ring 20 form rotary connection, the injury of the roller 21 to muscle tissues can be reduced when the incision is stretched, the roller 21 is arranged in a hourglass shape, the muscle tissues can be accumulated at the sunken parts of the outer wall of the roller 21, the anti-skid effect can be improved, the anti-skid convex layers 26 are arranged, the thickness of the anti-skid convex layers 26 is gradually increased from the middle to the two ends, the anti-skid effect can be further improved, the incision corners can be stretched in different positions and directions according to the operation requirement by arranging the two branch rods 12, if the incision corners are not required to be stretched, namely, the branch rod 12 can be reset into the movable opening 11, at the moment, the fixing column 22 can enter the abdicating opening 27, the branch rod 12 is fixed by screwing the hand wheel 16, the first screw 23 is rotated reversely, the roller 21 is contracted into the installation groove 17, and can be conveniently stored, further, the handle 28 is held, the two fixed angle rods 29 are inserted into the corresponding sleeve blocks 30, then the third shaft rod 36 and the second bevel gear 37 are rotated, the second bevel gear 37 is meshed to drive the first bevel gear 35 and the bidirectional screw 33 to rotate, so that the two extension rods 34 move close to or away from each other, then the opening angles of the two fixed angle rods 29 and the branch rod 12 are simultaneously adjusted by the extension rods 34, the handle 28 is pulled leftwards and rightwards, the two branch rods 12 can be pulled to move simultaneously, thereby the two branch rods 12 can synchronously open and adjust the opening angles, after the two hand wheels 16 are screwed, the handle 28 is removed.

The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.

Claims (10)

1. The thoracic surgery thoracic cavity expanding device comprises a first main rod (1) and a second main rod (2) which are parallel to each other, and is characterized in that a rack (3) is fixedly connected to one side of the front end of the first main rod (1), a mounting opening (4) is formed in the second main rod (2), the rack (3) penetrates through the mounting opening (4), a first shaft rod (5) is rotatably connected to the inner portion of the bottom of the mounting opening (4), the top of the first shaft rod (5) penetrates through the second main rod (2), a toothed ring (6) is fixedly sleeved on the first shaft rod (5), the toothed ring (6) is meshed with the rack (3), hook plates (7) are fixedly connected to the bottoms of the first main rod (1) and the second main rod (2), the cross sections of the hook plates (7) are arranged in an arc shape, sliding grooves (8) are formed in the outer sides of the rack (3), sliding blocks (9) are slidably connected to the sliding blocks (9), and are fixedly connected to the inner walls, which are far away from the toothed ring (6) of the mounting opening (4), one side of the second main rod (2) far away from the toothed ring (6) is in threaded connection with a knob (10), and the knob (10) penetrates through the sliding block (9).

2. The chest surgical chest distractor of claim 1, wherein: the movable opening (11) has been all seted up to one side that rack (3) were kept away from in first mobile jib (1) and second mobile jib (2), be provided with branch pole (12) in movable opening (11), divide pole (12) top to be provided with slide adjusting mechanism, slide adjusting mechanism is connected with second axostylus axostyle (15), first mobile jib (1) is run through at second axostylus axostyle (15) top, be provided with fixed establishment on second axostylus axostyle (15), be provided with contact mechanism on branch pole (12), one side that activity opening (11) top and bottom inner wall are close to hook plate (7) has all been seted up and has been let a mouthful (27).

3. The chest surgical chest distractor of claim 2, wherein: the sliding adjusting mechanism comprises a guide block (14), a guide groove (13) is formed in the top of the branch rod (12), the guide block (14) is connected into the guide groove (13) in a sliding mode, and a second shaft rod (15) is fixedly connected to the top of the guide block (14).

4. The chest surgical chest distractor of claim 2, wherein: the fixing mechanism comprises a hand wheel (16), the hand wheel (16) is connected to the second shaft lever (15) in a threaded mode, and the hand wheel (16) is located above the first main rod (1).

5. The chest surgical chest distractor of claim 2, wherein: contact mechanism includes cylinder (21), and branch pole (12) bottom is kept away from one side of first mobile jib (1) and has been seted up mounting groove (17), and guide slot (18) have all been seted up to mounting groove (17) both sides inner wall, and sliding connection has guide block (19) in guide slot (18), and same ring (20) of fixedly connected with between two guide blocks (19), cylinder (21) set up in the below of ring (20), and ring (20) are connected with elevating system.

6. The chest surgical chest distractor of claim 5, wherein: elevating system includes fixed column (22), and fixed column (22) fixed connection is in the top of minute pole (12), and fixed column (22) top is run through and is rotated and be connected with first screw rod (23), first screw rod (23) and ring (20) threaded connection.

7. The chest surgical chest distractor of claim 5, wherein: annular groove (24) have been seted up to ring (20) bottom, sliding connection has activity ring (25) in annular groove (24), and welded fastening between activity ring (25) and cylinder (21).

8. The chest surgical chest distractor of claim 5, wherein: the whole roller (21) is hourglass-shaped, the outer wall of the circumference of the roller (21) is provided with a plurality of groups of anti-skidding convex layers (26) which are distributed in an up-down symmetrical mode, and the thickness of the anti-skidding convex layers (26) is gradually increased from the middle to two ends.

9. The chest surgical chest distractor device of claim 2, wherein: divide interior terminal surface welded fastening of pole (12) to have cover block (30), it has same angle mechanism to peg graft between two cover blocks (30), angle mechanism includes handle (28) surely, handle (28) bottom pivot is connected with angle lever (29) surely of two front and back symmetric distributions, angle lever (29) interior terminal surface rotates and is connected with extension rod (34), the cover is equipped with same regulation loop bar (31) between two extension rod (34), adjust loop bar (31) one side inner wall fixedly connected with fixed block (32), it is connected with two-way screw rod (33) to rotate on fixed block (32), two-way screw rod (33) and extension rod (34) threaded connection, the cover is established on two-way screw rod (33) and is fixed with first bevel gear (35), it is connected with third axostylus axostyle (36) to rotate in regulation loop bar (31) one side, third axostylus axostyle (36) inboard fixedly connected with second bevel gear (37), second bevel gear (37) and first bevel gear (35) meshing connection.

10. The chest surgical chest distractor device of claim 9, wherein: two front and back symmetric distribution's directional groove (38) are seted up to regulation loop bar (31) one side inner wall, and sliding connection has directional block (39) in directional groove (38), fixed connection between directional block (39) and extension rod (34).

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