CN114129209B - Operation retractor capable of achieving stepless adjustment of multiple degrees of freedom - Google Patents
Operation retractor capable of achieving stepless adjustment of multiple degrees of freedom Download PDFInfo
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- CN114129209B CN114129209B CN202111486750.0A CN202111486750A CN114129209B CN 114129209 B CN114129209 B CN 114129209B CN 202111486750 A CN202111486750 A CN 202111486750A CN 114129209 B CN114129209 B CN 114129209B
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- 230000007246 mechanism Effects 0.000 claims abstract description 126
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 210000001519 tissue Anatomy 0.000 abstract description 14
- 210000003205 muscle Anatomy 0.000 abstract description 13
- 208000002847 Surgical Wound Diseases 0.000 abstract description 8
- 230000006378 damage Effects 0.000 abstract description 6
- 230000006872 improvement Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000451 tissue damage Effects 0.000 description 2
- 231100000827 tissue damage Toxicity 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 210000003195 fascia Anatomy 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
- 208000037816 tissue injury Diseases 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0293—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors with ring member to support retractor elements
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Abstract
The invention discloses a surgical retractor capable of being adjusted in multiple degrees of freedom in an electrodeless manner, which comprises a disc and a plurality of retractor mechanisms, wherein each retractor mechanism comprises a position adjusting mechanism, an angle adjusting mechanism and a surgical retractor, the position adjusting mechanism is arranged on the disc and can move along the circumferential direction of the disc, the angle adjusting mechanism is arranged on the position adjusting mechanism, and the surgical retractor is arranged on the angle adjusting mechanism and can move radially relative to the disc. According to the surgical retractor, the surgical retractor moves to the optimal hooking position of the surgical incision along the disc through the position adjusting mechanism, the tissue around the incision is hooked through the hook part of the surgical retractor, and the self-adaptive fine adjustment of the surgical retractor to the pulling direction is realized through the angle adjusting mechanism, so that the surgical field of view is enlarged, the optimal position of the surgical incision can be hooked and pulled according to requirements, the stepless adjustment of multiple degrees of freedom is realized, the point contact or the line contact between the edge of the retractor and the muscle tissue is avoided, unhooking is avoided, and the secondary damage to the muscle tissue at the incision is reduced.
Description
Technical Field
The invention relates to medical auxiliary instruments, in particular to a surgical retractor capable of being adjusted in multiple degrees of freedom in a stepless manner.
Background
Surgical retractors are a commonly used surgical medical instrument for pulling tissue (skin, muscle, tendon, fascia, ligament, etc.) around a incision to fully expose the surgical field of view and improve the quality of the procedure. The existing operation retractor mainly comprises manual installation and manual traction, however, the operation in the installation and traction processes is complicated, the stepless adjustment of the locking position of the traction cannot be realized, and the self-adaptive angle adjustment function is not provided.
In terms of applicability, existing surgical retractors mainly have the following problems:
1. the existing retractors are mainly manually adjusted at specific gears, stepless adjustment of locking at any position cannot be realized, the interval distance of the locking gears is large, the optimal position required to be exposed by the operation incision cannot be accurately adjusted, tearing and muscle tissue damage at the operation incision are easily caused, or the retraction tension is insufficient, the operation is influenced, and the modern operation requirements are difficult to match.
2. The existing retractors can only realize radial retraction with a plurality of fixed elevation angles, cannot carry out self-adaptive adjustment according to the characteristics of tissues around the incision position of a patient and the specific requirements of the retraction directions of various surgical incisions, have no adjustment functions of retraction elevation angles and retraction directions, and bring inconvenience to the surgery with special statures and specific positions.
3. The existing retractor is easy to form the condition that the edge of the retractor is in point contact or line contact with muscle tissues due to fixed retraction angle, the stress area is small, the pressure intensity is relatively large, and the retractor is easy to unhook, so that secondary damage to the muscle tissues at the incision is caused.
4. When the existing retractor works, the retractor can be subjected to great reverse tension of tissues around an operation incision, and the risks of rapid retraction such as unhooking during retraction, unhooking during working, unhooking during unlocking and the like exist, so that the consequences are not considered. Moreover, when unlocking the retractor, a small distance needs to be pulled first, then the unlocking is released, and inconvenience and risk of tissue injury around the incision are caused.
5. The existing retractor has the advantages of simple structure, low cost, but weak structural universality, retraction stability and other functional applicability. In the operation, a special nursing staff is often needed to assist to ensure the retracting effect of the retractor, so that human resources are wasted, and meanwhile, the stability risk of difficult avoidance exists.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the surgical retractor which is convenient for adjusting the surgical field and can be used for hooking and pulling the optimal position of the surgical incision according to the requirement.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a but operation retractor of electrodeless regulation of multi freedom, includes disc and a plurality of retractor mechanism, retractor mechanism includes position adjustment mechanism, angle adjustment mechanism and operation drag hook, position adjustment mechanism locates on the disc and can follow the circumference of disc is removed, angle adjustment mechanism locates on the position adjustment mechanism, operation drag hook locates on the angle adjustment mechanism and can be relative the disc radial movement.
As a further improvement of the above technical scheme: the position adjusting mechanism comprises a first clamping piece, a second clamping piece and a locking structure, wherein the first clamping piece is clamped on the outer side of the disc, the second clamping piece is clamped on the inner side of the disc, and the locking structure is used for locking the first clamping piece and the second clamping piece.
As a further improvement of the above technical scheme: the locking structure is an arc-shaped convex tooth and an arc-shaped groove which are matched with each other, arc centers of the arc-shaped convex tooth and the arc-shaped groove are coincident with the circle center of the disc, the arc-shaped convex tooth is arranged on the first clamping piece, and the arc-shaped groove is arranged on the second clamping piece.
As a further improvement of the above technical scheme: the outer side of the disc is provided with external teeth, and the first clamping piece is provided with internal teeth which can be matched with the external teeth.
As a further improvement of the above technical scheme: the angle adjusting mechanism is connected with the position adjusting mechanism through a spherical pair.
As a further improvement of the above technical scheme: the angle adjusting mechanism comprises a first connecting block and a second connecting block, the position adjusting mechanism is provided with a connecting ball, the first connecting block and the second connecting block are respectively provided with a split spherical groove matched with the connecting ball, and the first connecting block and the second connecting block are connected through a connecting pin and a connecting hole.
As a further improvement of the above technical scheme: the retractor mechanism further comprises a mounting mechanism, the mounting mechanism comprises a shell and a guide seat arranged in the shell, the shell is arranged on the angle adjusting mechanism, a guide rail is arranged on the guide seat, and a handle part of the surgical retractor is movably arranged on the guide rail.
As a further improvement of the above technical scheme: the traction mechanism further comprises a locking mechanism, the locking mechanism is used for locking the surgical retractor, the locking mechanism is arranged in the shell, the handle is provided with a ratchet bar, the locking mechanism comprises a mounting seat, a spring seat and a pawl which can be matched with the ratchet bar, the mounting seat is arranged on the guide seat, the pawl is hinged to the mounting seat, one end of the pawl, which is far away from the ratchet bar, is connected with one end of the spring, the other end of the spring is connected with the spring seat, and the spring seat is connected with the guide seat.
As a further improvement of the above technical scheme: the traction mechanism further comprises a locking driving mechanism for driving the pawl to be separated from the ratchet bar, the locking driving mechanism comprises a safety bolt, a pressing frame, a push rod, a sliding block and a connecting rod, the safety bolt is arranged on a top plate of the shell in a penetrating mode, the lower end of the safety bolt is connected with the upper end of the pressing frame, the lower end of the pressing frame is hinged to one end of the push rod, the other end of the push rod is hinged to one end of the sliding block, the other end of the sliding block is hinged to one end of the connecting rod, the other end of the connecting rod is hinged to one end of the pawl away from the ratchet bar, a guide post is arranged on the pressing frame, and a sliding groove for the sliding block to move transversely and a guide groove for the guide post to move longitudinally are formed in a side plate of the shell.
As a further improvement of the above technical scheme: the safety bolt comprises a rotating shaft, a first locking block and a second locking block, wherein the first locking block and the second locking block are arranged on the rotating shaft, the first locking block is positioned below the second locking block, and a locking groove for the first locking block to rotate is formed in the top plate.
Compared with the prior art, the invention has the beneficial effects that:
the surgical retractor capable of being adjusted in a stepless manner is arranged on the angle adjusting mechanism, the surgical retractor is moved to an optimal hooking position of a surgical incision along the disc through the position adjusting mechanism, tissues around the incision are hooked through the hook part of the surgical retractor, the surgical retractor is pulled to retract the tissues, meanwhile, the hook part can be subjected to reverse tension of muscles in the pulling process, the self-adaptive fine adjustment of the surgical retractor in the pulling direction is realized through the angle adjusting mechanism, so that the surgical field is enlarged, the size of the surgical field can be conveniently adjusted in the operation, the operation is convenient, the optimal position of the surgical incision can be hooked and pulled according to requirements, the stepless adjustment in multiple degrees of freedom is realized, the point contact or the line contact between the edge of the retractor and the muscle tissues is avoided, unhooking is avoided, and the secondary damage to the muscle tissues at the incision is reduced.
Drawings
Fig. 1 is a schematic perspective view of a surgical retractor device capable of stepless adjustment with multiple degrees of freedom.
Fig. 2 is a schematic structural view of the position adjusting mechanism and the angle adjusting mechanism in the present invention.
Fig. 3 is a front view of the position adjustment mechanism and the angle adjustment mechanism of the present invention.
Fig. 4 is a schematic structural view of an angle adjusting mechanism in the present invention.
Fig. 5 is a schematic structural view of a position adjusting mechanism in the present invention.
Fig. 6 is a schematic structural view of a first clamping member according to the present invention.
Fig. 7 is a schematic structural view of a second clamping member according to the present invention.
Fig. 8 is a schematic view of the surgical retractor and mounting mechanism of the present invention.
Fig. 9 is a bottom view of the surgical retractor and mounting mechanism of the present invention.
Fig. 10 is a right side view of the surgical retractor and mounting mechanism of the present invention.
Fig. 11 is a schematic structural view of the locking mechanism in the first view of the locking state of the present invention.
Fig. 12 is a schematic structural view of the second view of the locking mechanism in the locked state of the locking mechanism according to the present invention.
Fig. 13 is a schematic structural view of a third view of the locking mechanism in the locked state of the locking mechanism according to the present invention.
Fig. 14 is a schematic structural view of the first view angle of the locking mechanism in the unlocked state according to the present invention.
Fig. 15 is a schematic structural view of the second view angle of the locking mechanism in the unlocked state according to the present invention.
Fig. 16 is a schematic structural view of a third view angle of the locking mechanism in the unlocked state according to the present invention.
Fig. 17 is a schematic structural view of a side plate according to the present invention.
Fig. 18 is a schematic structural view of a locking mechanism in the present invention.
Fig. 19 is a schematic view showing the structure of the guide rail in the present invention.
FIG. 20 is a schematic view of a safety plug according to the present invention.
Fig. 21 is a schematic view of the structure of the top plate in the present invention.
Fig. 22 is a front cross-sectional view of the top plate of the present invention.
The reference numerals in the drawings denote: 1. a disc; 11. external teeth; 2. a position adjusting mechanism; 21. a first clamping member; 211. internal teeth; 22. a second clamping member; 221. an arc-shaped groove; 23. a locking structure; 231. arc-shaped convex teeth; 232. an arc-shaped groove; 24. a connecting ball; 3. a surgical retractor; 31. a hook portion; 32. a handle; 321. a ratchet bar; 4. a locking mechanism; 41. a pawl; 42. a mounting base; 43. a spring; 44. a spring seat; 441. a column; 5. a mounting mechanism; 51. a housing; 52. a guide seat; 521. a guide rail; 53. a top plate; 531. a locking groove; 532. a limiting block; 533. an avoidance groove; 54. a side plate; 541. a chute; 542. a guide groove; 55. a bottom plate; 551. wedge blocks; 6. a lock-up driving mechanism; 61. a safety bolt; 611. a rotation shaft; 612. a first locking block; 613. a second locking block; 614. a handle; 615. a limit flange; 62. a pressing frame; 621. a guide post; 63. a push rod; 64. a slide block; 65. a connecting rod; 7. an angle adjusting mechanism; 71. a first connection block; 72. a second connection block; 73. split spherical grooves; 74. a connecting pin; 75. a connection hole; 76. wedge-shaped grooves; 8. a retracting mechanism.
Detailed Description
The invention is described in further detail below with reference to the drawings and specific examples of the specification.
As shown in fig. 1 to 22, the surgical retractor device capable of stepless adjustment with multiple degrees of freedom of the present embodiment includes a disc 1 and a plurality of retractor mechanisms 8, the retractor mechanisms 8 include a position adjustment mechanism 2, an angle adjustment mechanism 7 and a surgical retractor 3, the position adjustment mechanism 2 is disposed on the disc 1 and can move along the circumferential direction of the disc 1, the angle adjustment mechanism 7 is disposed on the position adjustment mechanism 2, and the surgical retractor 3 is disposed on the angle adjustment mechanism 7 and can move radially (the radial direction here refers to the general direction in which the surgical retractor 3 moves) relative to the disc 1.
According to the multi-degree-of-freedom stepless-adjustment surgical retractor device, the surgical retractor 3 is arranged on the angle adjusting mechanism 7, the surgical retractor 3 is moved to the optimal hooking position of a surgical incision along the disc 1 through the position adjusting mechanism 2, tissues around the incision are hooked through the hook part 31 of the surgical retractor 3, the surgical retractor 3 is pulled to retract the tissues, meanwhile, the hook part 31 can be subjected to reverse tension of muscles in the pulling process, the self-adaptive fine adjustment of the surgical retractor 3 in the tension direction is realized through the angle adjusting mechanism 7, so that the surgical field is enlarged, the size of the surgical field can be conveniently adjusted in the operation, the operation is convenient, the optimal position of the surgical incision can be hooked and pulled according to requirements, the multi-degree-of-freedom stepless adjustment is realized, the point contact or the line contact between the edge of the retractor and the muscle tissues is avoided, unhooking is avoided, and secondary damage to the muscle tissues at the incision is reduced.
In this embodiment, the position adjusting mechanism 2 includes a first clamping member 21, a second clamping member 22, and a locking structure 23, where the first clamping member 21 is clamped on the outer side of the disc 1, the second clamping member 22 is clamped on the inner side of the disc 1, and the locking structure 23 is used for locking the first clamping member 21 and the second clamping member 22. When the hooking position needs to be adjusted, the first clamping piece 21 is moved to a preset position, and then the second clamping piece 22 is moved along the disc 1, so that the first clamping piece 21 is matched with the second clamping piece 22, and the first clamping piece 21 and the second clamping piece 22 are locked through the locking structure 23, so that the hooking position and the retracting direction of the surgical retractor 3 are fixed.
In this embodiment, the locking structure 23 is an arc-shaped convex tooth 231 and an arc-shaped groove 232 that are matched with each other, the arc centers of the arc-shaped convex tooth 231 and the arc-shaped groove 232 are all coincident with the circle center of the disc 1, the arc-shaped convex tooth 231 is disposed on the first clamping member 21, and the arc-shaped groove 232 is disposed on the second clamping member 22. Specifically, when the hooking position needs to be adjusted, the first clamping piece 21 is moved to a predetermined position, and then the second clamping piece 22 is moved along the disc 1, and the arc-shaped convex teeth 231 on the first clamping piece 21 are gradually embedded into the arc-shaped grooves 232 on the second clamping piece 22, so that the first clamping piece 21 and the second clamping piece 22 clamp the disc 1, the hooking position of the surgical retractor 3 is further fixed, and the adjustment of the retracting direction is facilitated. In other embodiments, the arc-shaped protruding teeth 231 can be disposed on the second clamping member 22, and the arc-shaped grooves 232 can be disposed on the first clamping member 21, so that the effect is the same.
In this embodiment, the outer side of the disc 1 is provided with external teeth 11, the inner side of the disc 1 is a smooth surface, the first clamping member 21 is provided with internal teeth 211 capable of being matched with the external teeth 11, and the second clamping member 22 is provided with arc grooves 221 capable of being matched with the smooth surface. Specifically, after the first clamping member 21 is matched with the second clamping member 22, the internal teeth 211 are matched with the external teeth 11, so that the positions of the first clamping member 21 and the second clamping member 22 on the disc 1 are fixed, the position adjusting mechanism 2 cannot integrally move, effective fixation of the hooking position is realized, the operation retractor 3 is prevented from shifting in the operation process, the operation efficiency is influenced, when the hooking position needs to be adjusted, the second clamping member 22 is moved to separate the arc-shaped groove 232 from the arc-shaped convex teeth 231, the first clamping member 21 is moved to a new hooking position, and finally the second clamping member 22 is moved to be matched with the first clamping member 21 to fix the hooking position, so that the adjustment and fixation of the retraction direction are further facilitated.
In this embodiment, the angle adjusting mechanism 7 is connected with the position adjusting mechanism 2 through a spherical pair, a gap is formed between the top surface of the position adjusting mechanism 7 and the bottom surface of the angle adjusting mechanism 8, so that the multi-degree-of-freedom rotation of the angle adjusting mechanism 7 is realized, and when a plurality of surgical retractor 3 are used simultaneously, the stress self-balance of the whole traction system can be realized. Specifically, angle adjustment mechanism 7 includes first connecting block 71 and second connecting block 72, the top surface of first holder 21 is equipped with connecting ball 24, the bottom surface of first connecting block 71 and second connecting block 72 all is equipped with can with connecting ball 24 complex components of a whole that can function independently spherical recess 73, two components of a whole that can function independently spherical recess are constituteed, the whole spherical recess constitutes spherical pair with connecting ball 24, first connecting block 71 and second connecting block 72 are connected through connecting pin 74 and connecting hole 75, the cooperation between each mechanism does not have tiny spare part participation, the assembly is simple and reliable, avoid the tiny spare part to drop on the operating table in the dismouting process and cause medical malpractice, reduce the operation risk. In other embodiments, the connection balls 24 may also be provided on the second clamping member 22.
In this embodiment, the retractor mechanism 8 further includes a mounting mechanism 5, the mounting mechanism 5 includes a housing 51 and a guide seat 52 disposed in the housing 51, the housing 51 is disposed on the angle adjusting mechanism 7, a guide rail 521 is disposed on the guide seat 52, and the handle 32 of the surgical retractor 3 is movably disposed on the guide rail 521. The handle 32 of the surgical retractor 3 is arranged in the guide rail 521 in a penetrating way, so that the surgical retractor 3 moves more stably. Preferably, the first connecting block 71 and the second connecting block 72 are respectively provided with a wedge-shaped groove 76, the bottom plate 55 of the shell 51 is provided with a wedge-shaped block 551, the shell 51 is fixed on the first connecting block 71 and the second connecting block 72 through the cooperation of the wedge-shaped block 551 and the wedge-shaped groove 76, the adjustment is convenient, and when the reverse tension of the muscle applied to the surgical retractor 3 is larger, the cooperation of the wedge-shaped block 551 and the wedge-shaped groove 76 is tighter, and the function of further locking the first connecting block 71 and the second connecting block 72 is achieved.
In this embodiment, the retracting mechanism 8 further comprises a locking mechanism 4, the locking mechanism 4 is used for locking the surgical retractor 3, the locking mechanism 4 is arranged in the shell 51, the handle 32 is provided with a ratchet bar 321, the locking mechanism 4 comprises a pawl 41 which can be matched with the ratchet bar 321, the surgical retractor 3 is prevented from retreating under the pulling force of tissues through the cooperation of the pawl 41 and the ratchet bar 321, the locking of the surgical retractor 3 is realized, and the damage to the tissues is avoided. Preferably, the upper and lower surfaces of the handle 32 are provided with ratchet bars 321, and the locking mechanism 4 is provided with two sets and is respectively arranged on the upper and lower sides of the handle 32. The surgical retractor 3 is locked more effectively through the two sets of locking mechanisms 4, so that the reliability is higher.
In this embodiment, the locking mechanism 4 further includes a mounting seat 42, a spring 43 and a spring seat 44, the mounting seat 42 is disposed on the guide seat 52, the middle of the pawl 41 is hinged with the mounting seat 42, one end of the pawl 41 away from the ratchet bar 321 is connected with one end of the spring 43, the other end of the spring 43 is connected with the spring seat 44, and the spring seat 44 is connected with the guide seat 52. Preferably, the spring seat 44 is provided with a stand column 441, the spring 43 is sleeved on the stand column 441 and is propped between the pawl 41 and the spring seat 44, the pawl 41 is installed on the guide seat 52 through the installation seat 42, the pawl 41 is propped against the ratchet bar 321 through the elasticity of the spring 43, and the surgical retractor 3 is prevented from backing under the action of tissue tension.
In this embodiment, the surgical retractor further includes a locking driving mechanism 6 for driving the pawl 41 to separate from the ratchet bar 321, the locking driving mechanism 6 includes a safety catch 61, a pressing frame 62, a push rod 63, a slide block 64 and a connecting rod 65, the push rod 63, the slide block 64 and the connecting rod 65 are all disposed on one side of the pawl 41, the safety catch 61 is disposed on the top plate 53 of the housing 51 in a penetrating manner, the lower end of the safety catch 61 is connected to the upper end of the pressing frame 62, the lower end of the pressing frame 62 is hinged to one end of the push rod 63, the other end of the push rod 63 is hinged to one end of the slide block 64, the other end of the slide block 64 is hinged to one end of the connecting rod 65, the other end of the connecting rod 65 is hinged to one end of the pawl 41 away from the ratchet bar 321, a guide post 621 is disposed on the pressing frame 62, and a slide groove 541 for the slide block 64 to move laterally (move left and right as viewed in fig. 16) and a guide groove 542 for the guide post 621 to move longitudinally (move vertically as viewed in fig. 16) are disposed on the side plate 54 of the housing 51. When the operation is finished or the operation field size needs to be reduced, the pawl 41 can be driven by the locking driving mechanism 6 to be separated from the ratchet bar 321, so that the operation retractor 3 can be retracted under the tension of tissues, or the operation retractor 3 can be retracted slowly by pulling by medical staff, and the tissue damage caused by the excessively high retraction speed is avoided.
Specifically, as shown in fig. 11 to 16, two push rods 63 and two slide blocks 64 are respectively arranged on two sides of the pawl 41, four connecting rods 65 are respectively arranged, two connecting rods 65 are respectively hinged on each slide block 64, and each connecting rod 65 is respectively hinged with the corresponding pawl 41, so that the reliability is higher. When the safety bar 61 is pressed down, the guide post 621 on the pressing frame 62 moves downwards in the guide groove 542, so that the push rod 63 pushes the slide block 64 to move leftwards in the slide groove 541, one end of the slide block 64 drives one end of the connecting rod 65 to move leftwards, and the other end of the connecting rod 65 drives one end of the pawl 41, which is far away from the ratchet bar 321, to approach the surgical retractor 3, so that one end, which is close to the ratchet bar 321, of the pawl 41 is separated from the ratchet bar 321, the surgical retractor 3 is convenient to retract, synchronous locking on the upper side and the lower side of the surgical retractor 3 can be realized through linkage of the pressing frame 62, the push rod 63, the slide block 64 and the connecting rod 65, a larger pushing distance can be provided, and a larger opening and closing angle of the pawl 41 is acquired.
In this embodiment, the safety latch 61 includes a rotation shaft 611, a first locking block 612, a second locking block 613, a handle 614 and a limiting flange 615, where the first locking block 612, the second locking block 613 and the limiting flange 615 are all disposed on the rotation shaft 611, the handle 614 is disposed at an upper end of the rotation shaft 611, the first locking block 612 is disposed below the second locking block 613, the second locking block 613 is disposed below the limiting flange 615, the limiting flange 615 is disposed below the handle 614, a gap between the second locking block 613 and the limiting flange 615 is greater than a thickness of the top plate 53, and the top plate 53 is provided with a avoiding groove 533 through which the rotation shaft 611, the first locking block 612 and the second locking block 613 sequentially pass, a locking groove 531 through which the first locking block 612 can rotate and a limiting block 532 for limiting a rotation angle of the second locking block 613.
Specifically, as shown in fig. 11 to 13, after the surgical retractor 3 is pulled to retract the surgical field to a predetermined size, the surgical retractor 3 is prevented from retracting by the locking mechanism 4 to fix the size of the surgical field, and at the same time, the first locking block 612 of the safety bar 61 can be rotated into the locking groove 531 to restrict the movement of the pressing frame 62, the push rod 63, the slider 64 and the link 65, and at this time, the locking mechanism 4 is in a locked state; when the surgical field needs to be enlarged, the first locking block 612 is screwed out of the locking groove 531, the surgical field can be enlarged by pulling the surgical retractor 3, after the adjustment is finished, the first locking block 612 can be rotated again to enter the locking groove 531 to fix the pawl 41, the pawl 41 can be prevented from moving by the locking driving mechanism 6, the reliability is improved, and the auxiliary locking mechanism 4 further fixes the surgical field; as shown in fig. 14 to 16, when the operation is finished or the size of the operation field needs to be reduced, the first locking block 612 is screwed out of the locking groove 531, the handle 614 is pinched to press the rotating shaft 611, the pawl 41 is separated from the ratchet bar 321, the rotating shaft 611 is rotated by limiting the pressing depth of the rotating shaft 611 through the limiting flange 615, the rotating angle of the second locking block 613 is limited by the limiting block 532, the maximum rotating angle of the second locking block 613 is preferably 90 °, and at this time, the locking mechanism 4 is in an unlocking state, so that the operation retractor 3 can be retracted under the action of the pulling force of tissues, or the operation retractor 3 is pulled by medical staff to be retracted slowly, the operation of fixing and adjusting the size of the operation field can be completed independently, the reliability is high, the damage of tissues is avoided, and the operation risk is reduced.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (7)
1. An electrodeless adjustable operation retractor device of multi freedom, which is characterized in that: comprises a disc (1) and a plurality of traction mechanisms (8), the traction mechanisms (8) comprise a position adjusting mechanism (2), an angle adjusting mechanism (7) and a surgical retractor (3), the position adjusting mechanism (2) is arranged on the disc (1) and can move along the circumferential direction of the disc (1), the angle adjusting mechanism (7) is arranged on the position adjusting mechanism (2), the surgical retractor (3) is arranged on the angle adjusting mechanism (7) and can move radially relative to the disc (1), the traction mechanisms (8) further comprise a mounting mechanism (5), the mounting mechanism (5) comprises a shell (51) and a guide seat (52) arranged in the shell (51), the shell (51) is arranged on the angle adjusting mechanism (7), a guide track (521) is arranged on the guide seat (52), a handle (32) of the surgical retractor (3) is movably arranged on the guide track (521), the traction mechanism (8) further comprises a locking mechanism (4), the locking mechanism (321) is arranged in the shell (51) and is provided with a ratchet handle (32), the locking mechanism (4) comprises a mounting seat (42), a spring (43), a spring seat (44) and a pawl (41) which can be matched with the ratchet bar (321), the mounting seat (42) is arranged on the guide seat (52), the pawl (41) is hinged with the mounting seat (42), one end of the pawl (41) away from the ratchet bar (321) is connected with one end of the spring (43), the other end of the spring (43) is connected with the spring seat (44), the spring seat (44) is connected with the guide seat (52), the pulling mechanism (8) further comprises a locking driving mechanism (6) which is used for driving the pawl (41) to be separated from the ratchet bar (321), the locking driving mechanism (6) comprises a safety bolt (61), a pressing frame (62), a push rod (63), a sliding block (64) and a connecting rod (65), the safety bolt (61) is arranged on a top plate (53) of the shell (51) in a penetrating mode, the lower end of the safety bolt (61) is connected with the upper end of the pressing frame (62), the other end of the push rod (63) is hinged with the sliding block (64), the other end of the sliding block (64) is hinged with one end of the connecting rod (65), the other end of the connecting rod (65) is hinged with one end of the pawl (41) away from the ratchet bar (321), a guide column (621) is arranged on the pressing frame (62), and a sliding groove (541) capable of transversely moving the sliding block (64) and a guide groove (542) capable of longitudinally moving the guide column (621) are arranged on the side plate (54) of the shell (51).
2. The multiple degree of freedom electrodeless adjustable surgical retractor device of claim 1, wherein: the position adjusting mechanism (2) comprises a first clamping piece (21), a second clamping piece (22) and a locking structure (23), wherein the first clamping piece (21) is clamped on the outer side of the disc (1), the second clamping piece (22) is clamped on the inner side of the disc (1), and the locking structure (23) is used for locking the first clamping piece (21) and the second clamping piece (22).
3. The multiple degree of freedom electrodeless adjustable surgical retractor device of claim 2, wherein: the locking structure (23) is an arc-shaped convex tooth (231) and an arc-shaped groove (232) which are matched with each other, arc centers of the arc-shaped convex tooth (231) and the arc-shaped groove (232) are coincident with the circle center of the disc (1), the arc-shaped convex tooth (231) is arranged on the first clamping piece (21), and the arc-shaped groove (232) is arranged on the second clamping piece (22).
4. The multiple degree of freedom electrodeless adjustable surgical retractor device of claim 2, wherein: the outer side of the disc (1) is provided with external teeth (11), and the first clamping piece (21) is provided with internal teeth (211) which can be matched with the external teeth (11).
5. The multiple degree of freedom electrodeless adjustable surgical retractor device as claimed in any of claims 1 to 4, wherein: the angle adjusting mechanism (7) is connected with the position adjusting mechanism (2) through a spherical pair.
6. The multiple degree of freedom electrodeless adjustable surgical retractor device of claim 5, wherein: the angle adjusting mechanism (7) comprises a first connecting block (71) and a second connecting block (72), the position adjusting mechanism (2) is provided with a connecting ball (24), the first connecting block (71) and the second connecting block (72) are respectively provided with a split spherical groove (73) which can be matched with the connecting ball (24), and the first connecting block (71) and the second connecting block (72) are connected through a connecting pin (74) and a connecting hole (75).
7. The multiple degree of freedom electrodeless adjustable surgical retractor device of claim 1, wherein: the safety catch (61) comprises a rotating shaft (611), a first locking block (612) and a second locking block (613), wherein the first locking block (612) and the second locking block (613) are arranged on the rotating shaft (611), the first locking block (612) is positioned below the second locking block (613), and a locking groove (531) into which the first locking block (612) can rotate is formed in the top plate (53).
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| CN202111486750.0A CN114129209B (en) | 2021-12-07 | 2021-12-07 | Operation retractor capable of achieving stepless adjustment of multiple degrees of freedom |
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| US20060135852A1 (en) * | 2004-12-20 | 2006-06-22 | Tibor Koros | Rotatable holder assembly for a surgical retractor blade |
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|---|---|---|---|---|
| US6620097B1 (en) * | 2002-03-29 | 2003-09-16 | Codman & Shurtleff, Inc. | Three-dimensional tilt ratchet mechanism |
| KR101298059B1 (en) * | 2013-02-04 | 2013-08-20 | 순천향대학교 산학협력단 | Muscle retractor |
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| CN114129209A (en) | 2022-03-04 |
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