Thyroid surgery retractor

Abstract

The invention discloses a thyroid surgery retractor, and relates to the technical field of thyroid surgery auxiliary instruments. The thyroid surgery retractor comprises two fixing plates which are symmetrically distributed left and right; the bottoms of the two fixing plates are symmetrically connected with two fixing assemblies used for fixing the fixing plates to the bed edge, the tops of the two fixing plates are symmetrically connected with two retracting assemblies, and the two retracting assemblies are symmetrically connected with two first shifting rods. The two fixing plates are fixed to the bed edges of the two sides of an operating bed respectively through the arranged fixing assembly, then the traction directions of the two shifting rods are adjusted through the two direction adjusting assemblies, and then the skin incision of a patient is pulled open through the traction assembly. After the two cross rods drive the two first shifting rods to move away from each other so as to pull the skin incision of the patient open, the limiting mechanism can limit the two cross rods so as to prevent the two cross rods from moving close to each other, and therefore it can be ensured that the pulled skin incision of the patient is kept stable.

Description

Technical Field

[0001] The present invention relates to the technical field of thyroid surgery assisting instruments, and particularly to a thyroid surgery retractor. Background Art

[0002] The thyroid gland is located below the thyroid cartilage in the human neck, on both sides of the trachea. In cases of thyroid nodule enlargement, thyroid cancer, etc., surgical treatment is required. During the surgical treatment, in order to expose the surgical field and facilitate exploration and operation, it is necessary to retract the skin tissue, and generally a retractor is needed to retract the skin tissue.

[0003] In traditional open thyroid surgery, when retracting the skin tissue, two L-shaped thyroid hook heads are usually used to pull the incision. Generally, 1-2 assistants are required to manually adjust the position and strength to ensure that the skin tissue at the incision is smoothly pulled open and pulled out into a suitable shape and size to ensure the smooth progress of the surgery.

[0004] In the prior art, since an assistant is required to manually pull the L-shaped thyroid hook head to retract the incision, the assistant needs to continuously pull and cannot participate in other surgical operations, increasing the labor cost. At the same time, when the assistant pulls, there may be position deviation or uneven strength, and repeated adjustment is required, affecting the surgical efficiency and effect. Therefore, there is an urgent need for a thyroid surgery retractor. Summary of the Invention

[0005] The purpose of the present invention is to provide a thyroid surgery retractor to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A thyroid surgery retractor, comprising: two fixing plates symmetrically distributed left and right; two fixing components symmetrically connected to the bottoms of the two fixing plates for fixing the fixing plates on the edge of the bed; two retracting components symmetrically connected to the tops of the two fixing plates; two first levers symmetrically connected to the two retracting components; two direction adjusting components symmetrically connected to the two fixing plates for adjusting the retracting direction of the first levers; and the two retracting components symmetrically connected to the two direction adjusting components.

[0007] The retracting component includes two fixing blocks symmetrically connected to the two direction adjusting components. Two moving cavities are symmetrically opened on the sides of the two fixing blocks close to each other. Two cross bars are symmetrically and movably inserted into the two moving cavities. Two limiting mechanisms are symmetrically connected in the two fixing blocks for limiting the two cross bars to prevent the two cross bars from moving towards the approaching direction. The retracting component further includes two reset mechanisms symmetrically connected to the two fixing blocks for moving the two cross bars towards the approaching direction.

[0008] Preferably, the limiting mechanism includes two groups of teeth fixedly connected symmetrically to the bottoms of the two cross bars. A plurality of teeth in each group are equidistantly distributed along the length direction of the cross bar. The limiting mechanism further includes two mounting cavities symmetrically opened on the inner bottom walls of the two moving cavities. Two moving plates are symmetrically and slidably connected between the front and rear inner side walls of the two mounting cavities. Two groups of ratchet teeth are symmetrically fixedly connected to the tops of the two moving plates. A plurality of ratchet teeth in each group are equidistantly distributed along the length direction of the moving plate. The two groups of ratchet teeth can be respectively engaged with the two groups of teeth. The reset mechanism is used to drive the moving plate to move downward until the ratchet teeth are separated from the teeth. The advantage of this setting is that when the two cross bars are pushed away from each other to drive the two first shift rods to retract the patient's skin incision, the ratchet teeth will be engaged in the gap between the adjacent two teeth. In this way, combined with the characteristic that the ratchet teeth can only rotate in one direction, it can prevent the two cross bars from moving closer to each other, so as to ensure that the two first shift rods can retract the patient's skin incision stably and reliably, improving the reliability of the retractor.

[0009] Preferably, the direction adjustment assembly includes two arc-shaped first limiting grooves symmetrically opened on the tops of the two fixing plates. Two arc-shaped second limiting grooves are symmetrically opened on the inner bottom walls of the two first limiting grooves. The width of the second limiting groove is greater than that of the first limiting groove. Two circular plates are slidably connected in the two second limiting grooves. Two support rods are symmetrically fixedly connected to the tops of the two circular plates. The two support rods are symmetrically and movably inserted into the two first limiting grooves. The tops of the two support rods are symmetrically fixedly connected to two electric push rods. The output ends of the two electric push rods are respectively fixedly connected to the bottoms of the two fixing blocks. The direction adjustment assembly further includes two pressing assemblies symmetrically connected to the two circular plates. The pressing assembly is used to fix the circular plate to the inner bottom wall of the second limiting groove. The advantage of this setting is that by releasing the fixed connection between the pressing assembly and the inner bottom wall of the circular plate and the second limiting groove, the support rod can be driven to move clockwise or counterclockwise along the first limiting groove, so as to drive the two retracting assemblies and the two first shift rods to move clockwise or counterclockwise, so as to adjust the retracting direction of the two first shift rods on the patient's skin incision, so as to retract the skin incision into a suitable shape according to the actual needs of the operation, improving the flexibility and practicability of the retractor.

[0010] Preferably, the pressing assembly includes two first circular cavities symmetrically formed at the bottoms of the two circular plates. Two pressing plates are movably inserted into the two first circular cavities. A magnetic plate is embedded and connected to the bottom of the pressing plate. An iron plate is fixedly connected to the inner bottom wall of the second limiting groove. The magnetic plate and the iron plate can adsorb each other. Two groups of first elastic members are symmetrically and fixedly connected between the tops of the two pressing plates and the inner top walls of the two first circular cavities. Two straight holes are symmetrically formed in the inner top walls of the two first circular cavities. The tops of the two straight holes penetrate through the bottoms of the two support rods. Two straight rods are symmetrically and movably inserted into the two straight holes. The bottom ends of the two straight rods are respectively fixedly connected to the tops of the two pressing plates. The top ends of the two straight rods are symmetrically fixedly connected to two push plates. Two second elastic members are symmetrically and fixedly connected between the tops of the two push plates and the inner top walls of the two straight holes. Two pairs of rectangular grooves are symmetrically formed on the outer side walls of the two support rods. The inner side walls of the two pairs of rectangular grooves close to each other are respectively communicated with the two straight holes. The two push plates are respectively slidably connected in the two pairs of rectangular grooves. The front and rear side surfaces of the two push plates respectively extend to the outside of the support rods. The advantage of such a setting is that by overcoming the elastic force of the second elastic member and pushing the push plate to move upward along the rectangular groove, at this time, the push plate will drive the pressing plate to move upward through the straight rod so that the magnetic plate at the bottom of the pressing plate is separated from the iron plate on the inner bottom wall of the second limiting groove. In this way, the medical staff can push the circular plate along the second limiting groove and push the support rod along the first limiting groove to move clockwise or counterclockwise. On the contrary, only need to release the push plate. At this time, under the elastic force of the second elastic member, the pressing plate will move downward again and make the magnetic plate at the bottom of the pressing plate tightly abut against and adsorb the iron plate on the inner bottom wall of the second limiting groove, so as to fix the circular plate again, ensure the position stability of the first dial rod during the subsequent retraction operation, and thus ensure that the patient's skin incision is stably and reliably retracted.

[0011] Preferably, the direction adjustment assembly further includes two buckling mechanisms symmetrically connected to the outer side walls of the two support rods. The two buckling mechanisms are used to buckle the push plate moved to the highest position on the outer side wall of the support rod. The advantage of such a setting is that it enables the medical staff not to always forcefully move the push plate upward to keep the push plate at the highest position, liberating the hands of the medical staff, enabling the medical staff to more easily push the support rod to move clockwise or counterclockwise along the first limiting groove, simplifying the adjustment operation of the retraction direction of the first dial rod, and improving the convenience and practicality of the retractor.

[0012] Preferably, the buckling mechanism includes two pairs of vertical rods symmetrically and fixedly connected to the outer circumferential surfaces of the two support rods through a horizontal plate. The bottom ends of the vertical rods are symmetrically and fixedly connected with two elastic cards. The thickness of the elastic cards gradually decreases from top to bottom. The two elastic cards are in an inverted frustum shape. The buckling mechanism further includes two pairs of jacks symmetrically opened at the tops of the two push plates. The bottom ends of the two pairs of jacks penetrate the bottom walls of the two push plates. The two groups of elastic cards can be respectively inserted into the two jacks. The advantage of this setting is that when the medical staff pushes the push plate upward, the two jacks on the push plate can be sleeved on the bottom ends of the two pairs of elastic cards. And as the push plate continues to move upward, each pair of two elastic cards will be squeezed towards the approaching direction until the elastic cards completely penetrate the jacks. At this time, each pair of two elastic cards will rotate towards the separating direction due to the loss of external extrusion force. In this way, the elastic cards are stably inserted through the jacks, and then the buckling operation of the push plate at the highest position and the outer side wall of the support rod is conveniently completed. To prevent only squeezing each pair of two elastic cards towards the approaching direction to the closest position, at this time, under the elastic force of the second elastic member, the push plate will be driven downward until the elastic cards pass through the jacks in the opposite direction, and the clamping connection between the push plate and the outer side wall of the support rod can be conveniently released.

[0013] Preferably, a pushing assembly is connected between the closer ends of the two cross bars. The pushing assembly is used to push the two cross bars to move away from each other at the same speed. The advantage of this setting is that it can make the two first shift rods pull the two sides of the skin incision apart towards both sides with the same force, so as to ensure that the skin incision is reliably pulled into the required shape.

[0014] Preferably, the pushing component includes two square rods symmetrically and fixedly connected to the adjacent ends of the two cross bars. The pushing component further includes a rotating handle. Two square grooves are symmetrically formed at the left and right ends of the rotating handle. Two third elastic members are symmetrically and fixedly connected to the inner side walls of the two square grooves close to each other. Two rectangular rods are symmetrically and fixedly connected to the ends of the two third elastic members away from each other. The adjacent ends of the two rectangular rods are symmetrically and movably inserted into the two square grooves. First screws are symmetrically and threadedly inserted into the ends of the two rectangular rods away from each other. Two insertion cylinders are symmetrically and fixedly connected to the ends of the two first screws away from each other. Two square holes are symmetrically formed at the ends of the two insertion cylinders away from each other. The two insertion cylinders are symmetrically and movably sleeved on the outer side walls of the two square rods through the square holes. The advantage of such a setting is that only by rotating the rotating handle forward and backward, and under the limitation of the insertion cylinders and the square rods, the two insertion cylinders can be pushed to move away from each other by the two first screws. In this way, the two cross bars and the two first lever rods can be synchronously pushed to move away from each other at the same speed. And under the action of the square grooves, the third elastic members and the rectangular rods, the elastic force of the third elastic members can be overcome and the two rectangular rods can be pushed to move closer to each other. The two rectangular rods drive the two insertion cylinders to move closer to each other. In this way, the ends of the two insertion cylinders away from each other can be smoothly aligned with the adjacent ends of the two square rods. Then, only by loosening the two rectangular rods, the two insertion cylinders can be sleeved on the two square rods under the elastic force of the third elastic members. In this way, after the positions of the two first lever rods are fixed, the pushing component can be connected to the cross bar for pushing operation, so that the pushing component will not hinder the position adjustment and determination operation of the first lever rods. And after the skin incision is retracted, the pushing component can be removed, so that the pushing component will not block the skin incision, thereby providing a better surgical field of view and improving the reliability and practicability of the retractor.

[0015] Preferably, an auxiliary retraction component is further connected to the two cross bars. The auxiliary retraction component is used to make the shape of the opened skin opening of the patient more diverse. The advantage of such a setting is that more skin incisions of different shapes can be retracted according to the surgical field of view requirements, ensuring that the operation can be completed more effectively and smoothly, and greatly improving the reliability and practicability of the retractor.

[0016] Preferably, the auxiliary pulling assembly includes two connecting rods symmetrically and fixedly connected to the bottoms of the two crossbars near one end. At the bottoms of the two connecting rods, two connecting plates are symmetrically and fixedly connected. At the bottoms of the two connecting plates, two pairs of connecting blocks are symmetrically and fixedly connected. In the bottoms of the two pairs of connecting blocks, two pairs of receiving cavities are symmetrically formed. Between the front and rear inner sidewalls of the two pairs of receiving cavities, two pairs of hinge blocks are symmetrically rotatably connected through a first rotating rod and a first torsion spring. At the bottoms of the two pairs of hinge blocks, two pairs of second shifting rods are symmetrically and fixedly connected. On the side surfaces of the two pairs of connecting blocks close to each other, two pairs of second screw rods are symmetrically threaded and inserted. The far ends of the two pairs of second screw rods respectively penetrate through the side walls of the two pairs of connecting blocks and respectively abut against the side surfaces of the two pairs of hinge blocks close to each other. The advantage of such a setting is that by rotating the second screw rod and cooperating with the elastic force of the first torsion spring, the inclination angle of the hinge block is adjusted, thereby adjusting the inclination angle of the second shifting rod, so that the two pairs of second shifting rods cooperate with the two first shifting rods to provide more pulling points, and different pulling points have different pulling forces, so as to ensure that the pulled skin incision has more shapes.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] In the present invention, the two fixing plates are respectively fixed on the two side edges of the operating table through the fixing assembly, and then the pulling directions of the two shifting rods are adjusted through the two direction adjusting assemblies. Then, the patient's skin incision is pulled open through the retracting assembly. And after the two crossbars drive the two first shifting rods to move away from each other to pull open the patient's skin incision, the limiting mechanism can limit the two crossbars to prevent the two crossbars from moving towards each other. In this way, it can be ensured that the pulled patient's skin incision remains stable, and it is not necessary for medical staff to manually operate to maintain the open state of the patient's skin incision all the time, liberating the hands of medical staff and effectively improving the reliability and practicability of the retractor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 is a schematic diagram of the first partial structure of the present invention;

[0021] Figure 3 is a schematic diagram of the partial sectional structure of the present invention;

[0022] Figure 4 is a schematic diagram of the second partial structure of the present invention;

[0023] Figure 5 In the present invention Figure 1 is an enlarged schematic diagram of part A;

[0024] Figure 6In the present invention Figure 2 is an enlarged schematic view of part B in

[0025] Figure 7 In the present invention Figure 2 is an enlarged schematic view of part C in

[0026] Figure 8 In the present invention Figure 3 is an enlarged schematic view of part D in

[0027] In the figure: 1, fixing plate; 2, fixing component; 21, third screw; 22, clamping plate; 3, retracting component; 31, fixing block; 32, moving cavity; 33, cross bar; 34, limiting mechanism; 341, cogs; 342, mounting cavity; 343, moving plate; 344, ratchet teeth; 35, reset mechanism; 4, first lever; 5, direction adjusting component; 51, first limiting groove; 52, second limiting groove; 53, circular plate; 54, support rod; 55, pressing component; 551, straight hole; 552, straight rod; 553, push plate; 554, second elastic member; 56, fastening mechanism; 561, rectangular groove; 562, vertical rod; 563, elastic card; 564, jack; 6, pushing component; 61, square rod; 62, turning handle; 63, square groove; 64, third elastic member; 65, rectangular rod; 66, first screw; 67, inserting cylinder; 7, pulling component; 71, connecting rod; 72, connecting plate; 73, connecting block; 74, hinge block; 75, second lever; 76, second screw. Detailed implementation manners

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0029] Please refer to Figures 1 - 8 , a thyroid operation retractor shown in the figure, comprising: two fixing plates 1 symmetrically distributed left and right; two fixing components 2 symmetrically connected to the bottoms of the two fixing plates 1 for fixing the fixing plates 1 on the edge of the bed, two retracting components 3 symmetrically connected to the tops of the two fixing plates 1, two first levers 4 symmetrically connected to the two retracting components 3, two direction adjusting components 5 symmetrically connected to the two fixing plates 1 for adjusting the retracting direction of the first levers 4, and the two retracting components 3 are symmetrically connected to the two direction adjusting components 5;

[0030] The fixing component 2 includes a third screw rod 21 rotatably connected to the bottom of the fixing plate 1. A clamping plate 22 is threadedly sleeved on the external thread surface of the third screw rod 21. So that medical staff can clamp the edge of the bed between the bottom of the fixing plate 1 and the top of the clamping plate 22. Then, one hand of the medical staff holds the clamping plate 22, and the other hand rotates the third screw rod 21. In this way, the clamping plate 22 can be driven to move towards the edge of the bed and the fixing plate 1 until the clamping plate 22 cooperates with the fixing plate 1 to clamp the edge of the bed. In this way, the fixed connection operation of the fixing plate 1 can be completed;

[0031] The retracting component 3 includes two fixing blocks 31 symmetrically connected to two direction adjusting components 5. Two moving cavities 32 are symmetrically opened on the side surfaces of the two fixing blocks 31 close to each other. Two cross bars 33 are symmetrically and movably inserted into the two moving cavities 32. Two limiting mechanisms 34 are symmetrically connected in the two fixing blocks 31. The two limiting mechanisms 34 are used to limit the two cross bars 33 to prevent the two cross bars 33 from moving towards the approaching direction. The retracting component 3 further includes two reset mechanisms 35 symmetrically connected to the two fixing blocks 31 for making the two cross bars 33 move towards the approaching direction.

[0032] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 8 Specifically, when the two cross bars 33 are pushed towards the separating direction to drive the two first shift rods 4 to retract the patient's skin incision, the ratchet teeth 344 will be clamped in the gap between the adjacent two tooth spaces 341. In this way, combined with the characteristic that the ratchet teeth 344 can only rotate in one direction, the two cross bars 33 can be prevented from moving towards the approaching direction. In this way, it can be ensured that the two first shift rods 4 can stably and reliably retract the patient's skin incision, improving the reliability of the retractor.

[0033] Specifically, when the two cross bars 33 are pushed towards the separating direction to drive the two first shift rods 4 to retract the patient's skin incision, the ratchet teeth 344 will be clamped in the gap between the adjacent two tooth spaces 341. In this way, combined with the characteristic that the ratchet teeth 344 can only rotate in one direction, the two cross bars 33 can be prevented from moving towards the approaching direction. In this way, it can be ensured that the two first shift rods 4 can stably and reliably retract the patient's skin incision, improving the reliability of the retractor.

[0034] Refer to Figure, Figure 2 、 Figure 3 and Figure 5, the direction adjustment assembly 5 includes two arc-shaped first limiting grooves 51 symmetrically formed at the tops of the two fixing plates 1. Two arc-shaped second limiting grooves 52 are symmetrically formed on the inner bottom walls of the two first limiting grooves 51. The width of the second limiting groove 52 is greater than that of the first limiting groove 51. Two circular plates 53 are slidably connected in the two second limiting grooves 52. Two support rods 54 are symmetrically and fixedly connected to the tops of the two circular plates 53. The two support rods 54 are symmetrically and movably inserted into the two first limiting grooves 51. The tops of the two support rods 54 are symmetrically and fixedly connected with two electric push rods. The output ends of the two electric push rods are respectively fixedly connected to the bottoms of the two fixing blocks 31. The direction adjustment assembly 5 further includes two pressing assemblies 55 symmetrically connected to the two circular plates 53. The pressing assembly 55 is used to fix the circular plate 53 on the inner bottom wall of the second limiting groove 52.

[0035] Specifically, by releasing the fixed connection between the pressing assembly 55 and the inner bottom wall of the circular plate 53 and the second limiting groove 52, the support rod 54 can be driven to move clockwise or counterclockwise along the first limiting groove 51, so that the two retractor assemblies 3 and the two first shift rods 4 can be driven to move clockwise or counterclockwise, so that the retracting direction of the two first shift rods 4 on the patient's skin incision can be adjusted, so that the skin incision can be retracted into a suitable shape according to the actual needs of the operation, improving the flexibility and practicability of the retractor.

[0036] Refer to Figure 3 、 Figure 6 and and Figure 8 , the pressing assembly 55 includes two first circular cavities symmetrically formed at the bottoms of the two circular plates 53. Two pressing plates are movably inserted into the two first circular cavities. A magnetic plate is embedded at the bottom of the pressing plate. An iron plate is fixedly connected to the inner bottom wall of the second limiting groove 52. The magnetic plate and the iron plate can adsorb each other. Two groups of first elastic members are symmetrically and fixedly connected between the tops of the two pressing plates and the inner top walls of the two first circular cavities. Two straight holes 551 are symmetrically formed on the inner top walls of the two first circular cavities. The tops of the two straight holes 551 penetrate through the bottoms of the two support rods 54. Two straight rods 552 are symmetrically and movably inserted into the two straight holes 551. The bottoms of the two straight rods 552 are respectively fixedly connected to the tops of the two pressing plates. Two push plates 553 are symmetrically and fixedly connected to the tops of the two straight rods 552. Two second elastic members 554 are symmetrically and fixedly connected between the tops of the two push plates 553 and the inner top walls of the two straight holes 551. Two pairs of rectangular grooves 561 are symmetrically formed on the outer side walls of the two support rods 54. The inner side walls of the two pairs of rectangular grooves 561 close to each other are respectively communicated with the two straight holes 551. The two push plates 553 are respectively slidably connected in the two pairs of rectangular grooves 561. The front and rear sides of the two push plates 553 respectively extend to the outside of the support rod 54.

[0037] Specifically, by overcoming the elastic force of the second elastic member 554 and pushing the push plate 553 to move upward along the rectangular groove 561, at this time, the push plate 553 will drive the pressing plate to move upward through the straight rod 552 so that the magnetic plate at the bottom of the pressing plate is separated from the iron plate on the inner bottom wall of the second limiting groove 52. In this way, medical staff can push the circular plate 53 along the second limiting groove 52 and push the support rod 54 to move clockwise or counterclockwise along the first limiting groove 51. On the contrary, only need to release the push plate 553. At this time, under the elastic force of the second elastic member 554, the pressing plate will move downward again and make the magnetic plate at the bottom of the pressing plate tightly abut and adsorb against the iron plate on the inner bottom wall of the second limiting groove 52, so as to fix the circular plate 53 again, ensure the position stability of the first lever 4 during the subsequent retraction operation, and thus ensure that the patient's skin incision is stably and reliably retracted.

[0038] Refer to Figure 6 and Figure 8 Moreover, the direction adjustment assembly 5 further includes two buckling mechanisms 56 symmetrically connected to the outer side walls of the two support rods 54. The two buckling mechanisms 56 are used to buckle the push plate 553 that has moved to the highest position on the outer side wall of the support rod 54.

[0039] Specifically, it enables medical staff not to keep pushing the push plate 553 upward to keep the push plate 553 at the highest position, liberating the hands of medical staff, enabling medical staff to more easily push the support rod 54 to move clockwise or counterclockwise along the first limiting groove 51, simplifying the operation of adjusting the retraction direction of the first lever 4, and improving the convenience and practicability of the retractor.

[0040] Refer to Figure 6 and Figure 8 Moreover, the buckling mechanism 56 includes two pairs of vertical rods 562 symmetrically and fixedly connected to the outer peripheral surfaces of the two support rods 54 through cross plates. The bottom ends of the vertical rods 562 are symmetrically and fixedly connected with two elastic cards 563. The thickness of the elastic cards 563 gradually decreases from top to bottom. The two elastic cards 563 are in an inverted frustum shape. The buckling mechanism 56 further includes two pairs of jacks 564 symmetrically opened at the tops of the two push plates 553. The bottom ends of the two pairs of jacks 564 penetrate the bottom walls of the two push plates 553. The two groups of elastic cards 563 can be respectively clamped into the two jacks 564.

[0041] Specifically, when the medical staff push the push plate 553 upward, the two jacks 564 on the push plate 553 can be sleeved on the bottom ends of the two pairs of elastic cards 563. And as the push plate 553 continues to move upward, each pair of two elastic cards 563 will be squeezed towards each other until the elastic cards 563 completely penetrate through the jacks 564. At this time, each pair of two elastic cards 563 loses the external squeezing force and rotates away from each other. In this way, the elastic cards 563 are stably inserted through the jacks 564, and then the buckling operation of the push plate 553 at the highest position and the outer side wall of the support rod 54 is conveniently completed. To prevent this, only need to squeeze each pair of two elastic cards 563 towards each other to the closest position. At this time, under the elastic force of the second elastic member 554, the push plate 553 will be driven to move downward until the elastic cards 563 pass through the jacks 564 in the opposite direction, and the clamping connection between the push plate 553 and the outer side wall of the support rod 54 can be conveniently released.

[0042] Refer to Figure 1 and Figure 4 , a pushing component 6 is connected between the closer ends of the two cross bars 33. The pushing component 6 is used to push the two cross bars 33 to move away from each other at the same speed.

[0043] Specifically, the two first levers 4 can pull the two sides of the skin incision apart towards both sides with the same force, so as to ensure that the skin incision is reliably pulled into the required shape.

[0044] Refer to Figure 1 and Figure 4 , the pushing component 6 includes two square rods 61 symmetrically and fixedly connected to the closer ends of the two cross bars 33. The pushing component 6 further includes a turning handle 62. Two square grooves 63 are symmetrically opened at the left and right ends of the turning handle 62. Two third elastic members 64 are symmetrically and fixedly connected to the closer inner side walls of the two square grooves 63. Two rectangular rods 65 are symmetrically and fixedly connected to the farther ends of the two third elastic members 64. The closer ends of the two rectangular rods 65 are symmetrically and movably inserted into the two square grooves 63. First screw rods 66 are symmetrically and threadedly inserted into the farther ends of the two rectangular rods 65. Two inserting cylinders 67 are symmetrically and fixedly connected to the farther ends of the two first screw rods 66. Two square holes are symmetrically opened at the farther ends of the two inserting cylinders 67. The two inserting cylinders 67 are symmetrically and movably sleeved on the outer side walls of the two square rods 61 through the square holes.

[0045] Specifically, only need to rotate the rotating handle 62 clockwise, and then under the limitation of the inserting cylinder 67 and the square rod 61, the two inserting cylinders 67 can be pushed to move away from each other by the two first screw rods 66. In this way, the two cross bars 33 and the two first shifting rods 4 can be synchronously pushed to move away from each other at the same speed. And under the action of the square groove 63, the third elastic member 64 and the rectangular rod 65, the elastic force of the third elastic member 64 can be overcome and the two rectangular rods 65 can be pushed to move closer to each other. The two rectangular rods 65 drive the two inserting cylinders 67 to move closer to each other. In this way, the far ends of the two inserting cylinders 67 moving away from each other can be smoothly aligned with the near ends of the two square rods 61 moving closer to each other. Then only need to release the two rectangular rods 65 so that the two inserting cylinders 67 are sleeved on the two square rods 61 under the elastic force of the third elastic member 64. In this way, after the positions of the two first shifting rods 4 are fixed, the pushing assembly 6 can be connected to the cross bar 33 for pushing operation, so that the pushing assembly 6 will not hinder the position adjustment and determination operation of the first shifting rod 4. And after the skin incision is retracted, the pushing assembly 6 can be removed, so that the pushing assembly 6 will not block the skin incision, thus providing a better surgical field of view and improving the reliability and practicability of the retractor.

[0046] Refer to Figure 1 , an auxiliary retracting assembly 7 is further connected to the two cross bars 33. The auxiliary retracting assembly 7 is used to make the shape of the opened skin opening of the patient retracted more diversified.

[0047] Specifically, it can retract skin incisions of more shapes according to the requirements of the surgical field of view, ensure that the operation can be completed more effectively and smoothly, and greatly improve the reliability and practicability of the retractor.

[0048] Refer to Figure 1 、 Figure 4 and Figure 7 , the auxiliary retracting assembly 7 includes two connecting rods 71 symmetrically and fixedly connected to the bottoms of the near ends of the two cross bars 33. The bottoms of the two connecting rods 71 are symmetrically and fixedly connected with two connecting plates 72. The bottoms of the two connecting plates 72 are symmetrically and fixedly connected with two pairs of connecting blocks 73. Two pairs of receiving cavities are symmetrically opened at the bottoms of the two pairs of connecting blocks 73. Two pairs of hinge blocks 74 are symmetrically rotatably connected between the front and rear inner side walls of the two pairs of receiving cavities through first rotating rods and first torsion springs. The bottoms of the two pairs of hinge blocks 74 are symmetrically and fixedly connected with two pairs of second shifting rods 75. Two pairs of second screw rods 76 are symmetrically and threadedly inserted into the near sides of the two pairs of connecting blocks 73. The far ends of the two pairs of second screw rods 76 respectively penetrate through the side walls of the two pairs of connecting blocks 73 and respectively abut against the near sides of the two pairs of hinge blocks 74.

[0049] Specifically, by rotating the second screw rod 76 and cooperating with the elastic force of the first torsion spring, the inclination angle of the hinge block 74 is adjusted, and then the inclination angle of the second lever 75 is adjusted, so that the two pairs of second levers 75 cooperate with the two first levers 4 to provide more pulling points, and different pulling points have different pulling forces, so as to ensure that the pulled skin incision has more shapes.

[0050] Working principle: The medical staff clips the edge of the bed between the bottom of the fixing plate 1 and the top of the clamping plate 22, and then the medical staff holds the clamping plate 22 with one hand and rotates the third screw rod 21 with the other hand. In this way, the clamping plate 22 can be driven to move towards the edge of the bed and the fixing plate 1 until the clamping plate 22 cooperates with the fixing plate 1 to clamp the edge of the bed, and thus the fixed connection operation of the fixing plate 1 can be completed.

[0051] Then, overcome the elastic force of the second elastic member 554 and push the push plate 553 to move upward along the rectangular groove 561. At this time, the push plate 553 will drive the pressing plate to move upward through the straight rod 552 so that the magnetic plate at the bottom of the pressing plate is separated from the iron plate on the inner bottom wall of the second limiting groove 52. In this way, the medical staff can push the circular plate 53 along the second limiting groove 52 and push the support rod 54 to move clockwise or counterclockwise along the first limiting groove 51. On the contrary, only need to loosen the push plate 553. At this time, under the elastic force of the second elastic member 554, the pressing plate will move downward again and make the magnetic plate at the bottom of the pressing plate tightly abut against the iron plate on the inner bottom wall of the second limiting groove 52 and adsorb against it, so as to fix the circular plate 53 again, ensure the position stability of the first lever 4 during the subsequent retraction operation, and thus ensure that the patient's skin incision is stably and reliably retracted.

[0052] And when the push plate 553 moves to the highest position, the two jacks 564 on the push plate 553 can be sleeved on the bottom ends of the two pairs of elastic cards 563. And as the push plate 553 continues to move upward, it will squeeze each pair of two elastic cards 563 towards the approaching direction until the elastic cards 563 completely penetrate the jacks 564. At this time, each pair of two elastic cards 563 loses the external squeezing force and rotates towards the separating direction. In this way, the elastic cards 563 are stably inserted through the jacks 564, and then the buckling operation between the push plate 553 at the highest position and the outer wall of the support rod 54 is conveniently completed. To prevent only need to squeeze each pair of two elastic cards 563 towards the approaching direction to the closest position. At this time, under the elastic force of the second elastic member 554, it will drive the push plate 553 to move downward until the elastic cards 563 pass through the jacks 564 in the opposite direction, and the clamping connection between the push plate 553 and the outer wall of the support rod 54 can be conveniently released.

[0053] Next, move the cross bar 33 to drive the two first lever rods 4 and two groups of second lever rods 75 to move left and right until the two first lever rods 4 and two groups of second lever rods 75 are aligned with the patient's skin incision. Then, start the electric push rod to contract, so as to drive the two first lever rods 4 and two groups of second lever rods 75 to move downward through the two cross bars 33 until the two first lever rods 4 and two groups of second lever rods 75 are inserted into the skin incision.

[0054] Then, it will overcome the elastic force of the third elastic member 64 and push the two rectangular rods 65 to move towards the approaching direction. At this time, the two rectangular rods 65 drive the two inserting cylinders 67 to move towards the approaching direction, so that the far ends of the two inserting cylinders 67 can be smoothly aligned with the approaching ends of the two square rods 61. Then, just loosen the two rectangular rods 65 so that the two inserting cylinders 67 are sleeved on the two square rods 61 under the elastic force of the third elastic member 64.

[0055] Subsequently, rotate the rotating handle 62 clockwise. Then, under the limitation of the inserting cylinder 67 and the square rod 61, the two first screw rods 66 can be used to push the two inserting cylinders 67 to move away from each other. In this way, the two cross bars 33 and the two first lever rods 4 can be synchronously pushed to move away from each other at the same speed, so as to drive the two first lever rods 4 and two groups of second lever rods 75 to move away from each other to stretch the patient's skin incision.

[0056] And when the patient's skin incision is stretched to a certain width, rotate the second screw rod 76 and cooperate with the elastic force of the first torsion spring to adjust the inclination angle of the hinge block 74, and then adjust the inclination angle of the second lever rod 75, so that the two pairs of second lever rods 75 cooperate with the two first lever rods 4 to provide more pulling points, and different pulling points have different pulling forces. Then, continue to rotate the rotating handle 62 to stretch the patient's skin incision until the skin incision is stretched to an appropriate width. In this way, it can be ensured that the shape of the stretched skin is more in line with the shape required for the operation, and it can be ensured that the thyroid operation can be carried out more smoothly and safely.

[0057] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A thyroid surgery retractor, comprising: Two fixing plates (1) distributed symmetrically left and right; characterized in that, at the bottom of the two fixing plates (1), two fixing components (2) for fixing the fixing plates (1) on the edge of the bed are symmetrically connected, at the top of the two fixing plates (1), two retracting components (3) are symmetrically connected, on the two retracting components (3), two first shift rods (4) are symmetrically connected, on the two fixing plates (1), two direction adjusting components (5) for adjusting the retracting direction of the first shift rods (4) are symmetrically connected, and the two retracting components (3) are symmetrically connected to the two direction adjusting components (5); The retracting component (3) includes two fixing blocks (31) symmetrically connected to the two direction adjusting components (5), on the side surfaces of the two fixing blocks (31) close to each other, two moving cavities (32) are symmetrically opened, in the two moving cavities (32), two cross bars (33) are symmetrically and movably inserted, in the two fixing blocks (31), two limiting mechanisms (34) are symmetrically connected, and the two limiting mechanisms (34) are used to limit the two cross bars (33) to prevent the two cross bars (33) from moving towards the approaching direction. The retracting component (3) further includes two reset mechanisms (35) symmetrically connected to the two fixing blocks (31) for making the two cross bars (33) move towards the approaching direction.

2. The thyroid surgery retractor according to claim 1, wherein: The limiting mechanism (34) includes two groups of teeth (341) symmetrically and fixedly connected to the bottoms of the two cross bars (33), each group of multiple teeth (341) is equidistantly distributed along the length direction of the cross bar (33). The limiting mechanism (34) further includes two installation cavities (342) symmetrically opened on the inner bottom walls of the two moving cavities (32), between the front and rear inner side walls of the two installation cavities (342), two moving plates (343) are symmetrically and slidably connected, on the tops of the two moving plates (343), two groups of ratchet teeth (344) are symmetrically and fixedly connected, each group of multiple ratchet teeth (344) is equidistantly distributed along the length direction of the moving plate (343), and the two groups of ratchet teeth (344) can be respectively engaged with the two groups of teeth (341). The reset mechanism (35) is used to drive the moving plate (343) to move downward until the ratchet teeth (344) are separated from the teeth (341).

3. The thyroid surgery retractor according to claim 2, characterized in that: The direction adjustment component (5) includes two arc-shaped first limiting grooves (51) symmetrically formed at the tops of the two fixing plates (1). Two arc-shaped second limiting grooves (52) are symmetrically formed on the inner bottom walls of the two first limiting grooves (51). The width of the second limiting groove (52) is greater than that of the first limiting groove (51). Two circular plates (53) are slidably connected in the two second limiting grooves (52). Two support rods (54) are symmetrically and fixedly connected to the tops of the two circular plates (53). The two support rods (54) are symmetrically movably inserted into the two first limiting grooves (51). The tops of the two support rods (54) are symmetrically and fixedly connected to two electric push rods. The output ends of the two electric push rods are respectively fixedly connected to the bottoms of the two fixing blocks (31). The direction adjustment component (5) further includes two pressing components (55) symmetrically connected to the two circular plates (53). The pressing component (55) is used to fix the circular plate (53) on the inner bottom wall of the second limiting groove (52).

4. The thyroid surgery retractor according to claim 3, wherein: The pressing component (55) includes two first circular cavities symmetrically formed at the bottoms of the two circular plates (53). Two pressing plates are movably inserted into the two first circular cavities. A magnetic plate is embedded at the bottom of the pressing plate. An iron plate is fixedly connected to the inner bottom wall of the second limiting groove (52). The magnetic plate and the iron plate can adsorb each other. Two groups of first elastic members are symmetrically and fixedly connected between the tops of the two pressing plates and the inner top walls of the two first circular cavities. Two straight holes (551) are symmetrically formed on the inner top walls of the two first circular cavities. The tops of the two straight holes (551) penetrate through the bottoms of the two support rods (54). Two straight rods (552) are symmetrically and movably inserted into the two straight holes (551). The bottoms of the two straight rods (552) are respectively fixedly connected to the tops of the two pressing plates. Two push plates (553) are symmetrically and fixedly connected to the tops of the two straight rods (552). Two second elastic members (554) are symmetrically and fixedly connected between the tops of the two push plates (553) and the inner top walls of the two straight holes (551). Two pairs of rectangular grooves (561) are symmetrically formed on the outer side walls of the two support rods (54). The inner side walls of the two pairs of rectangular grooves (561) close to each other are respectively communicated with the two straight holes (551). The two push plates (553) are respectively slidably connected in the two pairs of rectangular grooves (561). The front and rear sides of the two push plates (553) respectively extend to the outside of the support rod (54).

5. The thyroid surgery retractor according to claim 4, characterized in that: The direction adjustment component (5) further includes two buckling mechanisms (56) symmetrically connected to the outer side walls of the two support rods (54). The two buckling mechanisms (56) are used to buckle the push plate (553) moved to the highest position on the outer side wall of the support rod (54).

6. The thyroid operation retractor according to claim 5, wherein: The snap connection mechanism (56) includes two pairs of vertical rods (562) symmetrically and fixedly connected to the outer peripheral surfaces of two support rods (54) through a cross plate. The bottom ends of the vertical rods (562) are symmetrically and fixedly connected with two elastic cards (563). The thickness of the elastic cards (563) gradually decreases from top to bottom. The two elastic cards (563) are in an inverted frustum shape. The snap connection mechanism (56) further includes two pairs of jacks (564) symmetrically opened at the tops of two push plates (553). The bottom ends of the two pairs of jacks (564) penetrate through the bottom walls of the two push plates (553). The two groups of elastic cards (563) can be respectively snapped into the two jacks (564).

7. A thyroid surgery retractor according to claim 6, characterized in that: A pushing component (6) is connected between the closer ends of the two cross bars (33). The pushing component (6) is used to push the two cross bars (33) to move away from each other at the same speed.

8. The thyroid operation retractor according to claim 7, wherein: The pushing component (6) includes two square rods (61) symmetrically and fixedly connected to the closer ends of the two cross bars (33). The pushing component (6) further includes a turning handle (62). The left and right ends of the turning handle (62) are symmetrically provided with two square grooves (63). Two third elastic members (64) are symmetrically and fixedly connected to the closer inner side walls of the two square grooves (63). The farther ends of the two third elastic members (64) are symmetrically and fixedly connected with rectangular rods (65). The closer ends of the two rectangular rods (65) are symmetrically and movably inserted into the two square grooves (63). The farther ends of the two rectangular rods (65) are symmetrically and threadedly inserted with first screw rods (66). The farther ends of the two first screw rods (66) are symmetrically and fixedly connected with two inserting cylinders (67). The farther ends of the two inserting cylinders (67) are symmetrically provided with two square holes. The two inserting cylinders (67) are symmetrically and movably sleeved on the outer side walls of the two square rods (61) through the square holes.

9. The thyroid operation retractor according to claim 8, characterized in that: An auxiliary pulling component (7) is further connected to the two cross bars (33). The auxiliary pulling component (7) is used to make the shape of the opened skin opening of the patient being pulled more diversified.

10. The thyroid surgery retractor according to claim 9, characterized in that: The auxiliary pulling component (7) includes two connecting rods (71) symmetrically and fixedly connected to the bottoms of the closer ends of the two cross bars (33). The bottom ends of the two connecting rods (71) are symmetrically and fixedly connected with two connecting plates (72). The bottoms of the two connecting plates (72) are symmetrically and fixedly connected with two pairs of connecting blocks (73). The bottoms of the two pairs of connecting blocks (73) are symmetrically provided with two pairs of accommodating cavities. Two pairs of hinge blocks (74) are symmetrically rotatably connected between the front and rear inner side walls of the two pairs of accommodating cavities through a first rotating rod and a first torsion spring. The bottoms of the two pairs of hinge blocks (74) are symmetrically and fixedly connected with two pairs of second shift rods (75). Two pairs of second screw rods (76) are symmetrically and threadedly inserted into the closer side surfaces of the two pairs of connecting blocks (73). The farther ends of the two pairs of second screw rods (76) respectively penetrate through the side walls of the two pairs of connecting blocks (73) and respectively abut against the closer side surfaces of the two pairs of hinge blocks (74).

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