Special retractor for thyroid surgery incision

Abstract

The invention relates to the technical field of thyroid surgery instruments, and discloses a special retractor for thyroid surgery incision, which comprises a controllable pulling mechanism and a horizontal distance adjusting mechanism, the movable mounting seats can be mounted on the edges of the two sides of the operating bed and can drive the hollow rod to move in the length direction of the bed body, the second external threaded rod can drive the movable mounting seats to move directionally during rotation, and the horizontal limiting rod can prevent the movable mounting seats from rotating. According to the special retractor for the thyroid surgery incision, pulling force towards the two sides can be generated on the incision of a patient, so that the incision can be expanded in the obliquely upward direction, the surgery view of a doctor cannot be affected, the safety of equipment in the using process is improved, in addition, the pulling force provided by the device is controllable elastic pressure, and the safety of the equipment is improved. Therefore, tensile force with higher adaptability is provided, and the applicability of equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of thyroid surgery instruments, and in particular to a special retractor for thyroid surgery incisions. Background Art

[0002] During an open thyroid resection surgery, the surgical field needs to be fully exposed after opening the neck incision. In the prior art, a special retractor for thyroid surgery incisions is generally used. Generally, the person holding the retractor needs to be located at the head end of the patient, and hold a thyroid retractor in each hand, one pulling towards the head end and the other pulling open the anterior strap muscles. It is not convenient to fix and requires two people to cooperate simultaneously. This not only affects the surgical efficiency, but also the retractor is prone to cause damage to the thyroid and other parts during the lifting process.

[0003] For this reason, the Chinese patent with the publication number "CN221865812U" discloses "a special retractor for thyroid surgery incisions". Its main structure includes a first retractor and a second retractor. First fixing plates and second fixing plates are symmetrically distributed in a staggered manner on the opposite surfaces of the first retractor and the second retractor. A chute is penetratingly opened on the second fixing plate; for this special retractor for thyroid surgery incisions, through the combined use of the chute, the threaded rod and the nut, the distance between the first retractor and the second retractor can be conveniently adjusted, which is beneficial to increasing the stability when the first retractor and the second retractor are connected. When the threaded rod and the nut are accidentally touched, the distance between the first retractor and the second retractor will not be adjusted, thus avoiding affecting the operation of medical staff and preventing certain harm to the patient. Moreover, by sliding the threaded rod on the chute, the distance between the first retractor and the second retractor can be adjusted arbitrarily.

[0004] However, when the above-mentioned special retractor for thyroid surgery incisions is actually used, it needs to be clamped at the patient's incision, which will undoubtedly cause a relatively serious visual field obstruction to the surgical operation space of medical staff. Moreover, when the device is clamped at the incision, the gravity of the device itself will cause the patient's incision to sink inward, easily resulting in the phenomenon that the device touches the internal organs, and there are relatively large potential safety hazards in the work. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a special retractor for thyroid surgery incisions, which is installed on both sides of the operating table and can generate a pulling force towards both sides on the incision of the patient, so that the incision can be expanded in an obliquely upward direction, without affecting the doctor's surgical field of view, thereby improving the safety of the device during use. In addition, the pulling force provided by the device is a controllable elastic pressure, so as to provide a more adaptable pulling force to improve the applicability of the device, and solve the above technical problems.

[0006] To achieve the above object, the present invention provides the following technical solution: A special retractor for thyroid surgery incisions, including a retractor with a first fixed plate at one end and capable of pulling the patient's incision, further including a controllable pulling mechanism, which internally has a hollow rod with a hollow state inside, a first inner movable plate and a second inner movable plate placed inside the hollow rod and capable of moving along the axial direction of the hollow rod, a spiral spring placed between the first inner movable plate and the second inner movable plate and capable of providing elastic tension, a wire that drives the retractor to move in a specific direction as the second inner movable plate moves, and a first external threaded rod that can drive the first inner movable plate to move when rotated, thereby changing the elastic tension of the spiral spring; and a horizontal distance adjustment mechanism, which internally has a movable mounting seat that can be installed on both side edges of the operating bed and can drive the hollow rod to move along the length direction of the bed body, a second external threaded rod that can drive the movable mounting seat to move in a specific direction when rotated, and a horizontal limiting rod that can prevent the movable mounting seat from rotating.

[0007] Preferably, the controllable pulling mechanism includes a hollow rod. The inside of the hollow rod is provided with a columnar component activity cavity. One end of the hollow rod is provided with a first internal threaded hole communicating with the outside space and one end face of the columnar component activity cavity. The other end of the hollow rod is provided with a rod body through hole communicating with the outside space and the other end face of the columnar component activity cavity. Inside the hollow rod and located in the columnar component activity cavity, a first inner movable plate and a second inner movable plate that can move along the axial direction of the columnar component activity cavity are placed. A spiral spring is fixedly installed between the first inner movable plate and the second inner movable plate. One end face of the first inner movable plate facing the first internal threaded hole is installed with a rotatable first external threaded rod through a bearing. The rod body of the first external threaded rod is installed inside the first internal threaded hole through a first thread structure. And one end of the first external threaded rod located outside the hollow rod is provided with a rotating cap. One end face of the second inner movable plate facing the rod body through hole is fixedly installed with a wire passing through the rod body through hole. One end of the wire is fixedly installed with a second fixed plate fixedly connected to the first fixed plate.

[0008] Preferably, the first thread structure includes an internal thread structure provided in the first internal threaded hole and an external thread structure provided on the rod body of the first external threaded rod, and the internal thread structure matches the external thread structure.

[0009] Preferably, the horizontal distance adjusting mechanism includes two symmetrical fixed bases and a movable mounting seat. Between the two fixed bases, a rotatable second outer threaded rod is installed through a bearing, and a horizontal limiting rod is fixedly installed. In the movable mounting seat, a second internal threaded hole connected to the second outer threaded rod through a second threaded structure and a limiting sliding hole capable of sliding along the rod body of the horizontal limiting rod are provided. On the upper surface of the movable mounting seat, a longitudinal support rod is fixedly installed. At the top of the longitudinal support rod, a hemispherical housing integrally formed therewith is provided. In the upper half of the hemispherical housing, a spherical cavity with an open top is provided. In the spherical cavity, a rotatable ball head is placed. On the upper spherical surface of the ball head, a longitudinal connecting rod integrally formed therewith is provided. At the top of the longitudinal connecting rod, a fixed sleeve integrally formed therewith and fixedly installed on the outer surface of the hollow rod is provided. One end of the second outer threaded rod is fixedly installed with a hand crank.

[0010] Preferably, the second threaded structure includes an internal threaded structure provided in the second internal threaded hole and an external threaded structure provided on the rod body of the second outer threaded rod, and the internal threaded structure matches the external threaded structure.

[0011] Preferably, the structural radius of the spherical cavity matches the structural radius of the ball head, and the depth of the spherical cavity is greater than the structural radius of the ball head and less than the structural diameter of the ball head.

[0012] Compared with the prior art, the present invention provides a special retractor for thyroid surgery incisions, which has the following beneficial effects:

[0013] It can generate a pulling force towards both sides at the incision of the patient, so that the incision can be expanded in an obliquely upward direction, and it will not affect the doctor's surgical field of view, thereby improving the safety of the device during use. In addition, the pulling force provided by the device is a controllable elastic pressure, so as to provide a more adaptable pulling force to improve the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a perspective view of the present invention;

[0015] Figure 2 is a perspective sectional view of the present invention;

[0016] Figure 3 is a perspective view of the controllable pulling mechanism in the present invention;

[0017] Figure 4 is a perspective sectional view of the controllable pulling mechanism in the present invention;

[0018] Figure 5 is a perspective view of the horizontal distance adjusting mechanism in the present invention;

[0019] Figure 6 This is a three-dimensional sectional view of the horizontal distance adjustment mechanism in the present invention.

[0020] Among them: 1. Hook; 2. First fixed plate; 3. Controllable pulling mechanism; 31. Hollow rod; 32. Columnar component activity cavity; 33. First internal thread hole; 34. Rod body perforation; 35. First internal moving plate; 36. Second internal moving plate; 37. Helical spring; 38. First external threaded rod; 39. Rotating cap; 310. Pulling wire; 311. Second fixed plate; 4. Horizontal distance adjustment mechanism; 41. Fixed base; 42. Horizontal limiting rod; 43. Second external threaded rod; 44. Hand crank; 45. Moving mounting seat; 46. Limiting sliding hole; 47. Second internal thread hole; 48. Longitudinal support rod; 49. Hemispherical shell; 410. Spherical cavity; 411. Ball head; 412. Longitudinal connecting rod; 413. Fixed sleeve. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figure 1 and Figure 2 , a special retractor for thyroid surgery incisions, including a hook 1 with a first fixed plate 2 provided at one end and capable of pulling the patient's incision. First, take two such devices, and then fixedly install the fixed bases 41 of the two devices on both sides of the patient's operating table respectively. When the patient completes the surgical incision, the hook 1 is stuck at the incision.

[0023] In order to provide a controllable elastic pulling force on the patient's incision, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4, it is necessary to set up a controllable pulling mechanism 3, which internally has a hollow rod 31 with a hollow state inside, a first inner movable plate 35 and a second inner movable plate 36 placed inside the hollow rod 31 and capable of moving along the axial direction of the hollow rod 31, a spiral spring 37 placed between the first inner movable plate 35 and the second inner movable plate 36 and capable of providing elastic tension, a wire 310 that drives the hook 1 to move directionally as the second inner movable plate 36 moves, and a first outer threaded rod 38 that can drive the first inner movable plate 35 to move when rotating, thereby changing the elastic tension of the spiral spring 37. When the rotating cap 39 is rotated, due to the connection of the thread structure, the first outer threaded rod 38 will drive the first inner movable plate 35 to move, thereby changing the distance between the first inner movable plate 35 and the second inner movable plate 36, and further changing the elastic tension of the spiral spring 37 at this time, realizing the controllability of the elastic pressure. The elastic force of the spiral spring 37 can be transmitted to the hook 1 through the wire 310, realizing the elastic tension on the patient's incision.

[0024] For the specific structure of the controllable pulling mechanism 3, please refer to Figure 3 and Figure 4 , including a hollow rod 31. A columnar component activity cavity 32 is arranged inside the hollow rod 31. One end of the hollow rod 31 is provided with a first inner threaded hole 33 connecting the external space and one end face of the columnar component activity cavity 32. The other end of the hollow rod 31 is provided with a rod body through hole 34 connecting the external space and the other end face of the columnar component activity cavity 32. Inside the hollow rod 31 and located inside the columnar component activity cavity 32, a first inner movable plate 35 and a second inner movable plate 36 are placed, which can move along the axial direction of the columnar component activity cavity 32. A spiral spring 37 is fixedly installed between the first inner movable plate 35 and the second inner movable plate 36. One end face of the first inner movable plate 35 facing the first inner threaded hole 33 is installed with a rotatable first outer threaded rod 38 through a bearing. The rod body of the first outer threaded rod 38 is installed inside the first inner threaded hole 33 through a first thread structure, and one end of the first outer threaded rod 38 located outside the hollow rod 31 is provided with a rotating cap 39. One end face of the second inner movable plate 36 facing the rod body through hole 34 is fixedly installed with a wire 310 passing through the rod body through hole 34. One end of the wire 310 is fixedly installed with a second fixed plate 311 fixedly connected to the first fixed plate 2. The first thread structure includes an inner thread structure arranged in the first inner threaded hole 33 and an outer thread structure arranged on the rod body of the first outer threaded rod 38, and the inner thread structure matches the outer thread structure.

[0025] In order to adjust the required position of the hook 1 according to different patients, please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6, it is necessary to set up a horizontal distance adjusting mechanism 4, which internally has a moving mounting base 45 that can be installed on the two side edges of the operating bed and can drive the hollow rod 31 to move along the length direction of the bed body, a second external threaded rod 43 that can drive the moving mounting base 45 to move directionally when rotating, and a horizontal limiting rod 42 that can prevent the moving mounting base 45 from rotating. According to the orientation of the patient's incision, rotate the handwheel 44. At this time, due to the connection of the threaded structure, the rotation of the second external threaded rod 43 will cause the moving mounting base 45 to have a directional displacement, thereby driving the hollow rod 31 to move to both sides of the patient's incision. During the pulling process, since the ball head 411 can rotate inside the hemispherical housing 49, the hollow rod 31 can point to the patient's incision, so as to improve the working stability of the device.

[0026] Regarding the specific structure of the horizontal distance adjusting mechanism 4, please refer to Figure 5 and Figure 6 , including two symmetrical fixed bases 41 and a moving mounting base 45. A rotatable second external threaded rod 43 is installed between the two fixed bases 41 through a bearing and a horizontal limiting rod 42 is fixedly installed. The moving mounting base 45 is provided with a second internal threaded hole 47 connected to the second external threaded rod 43 through a second threaded structure and a limiting sliding hole 46 that can slide along the rod body of the horizontal limiting rod 42. The upper surface of the moving mounting base 45 is fixedly installed with a longitudinal support rod 48. The top of the longitudinal support rod 48 is provided with a hemispherical housing 49 integrally structured with it. The upper half of the hemispherical housing 49 is provided with a spherical cavity 410 with an open top. A rotatable ball head 411 is placed in the spherical cavity 410. The upper spherical surface of the ball head 411 is provided with a longitudinal connecting rod 412 integrally structured with it. The top of the longitudinal connecting rod 412 is provided with a fixing sleeve 413 integrally structured with it and fixedly installed on the outer surface of the hollow rod 31. One end of the second external threaded rod 43 is fixedly installed with a handwheel 44. The second threaded structure includes an internal threaded structure arranged in the second internal threaded hole 47 and an external threaded structure arranged on the rod body of the second external threaded rod 43, and the internal threaded structure matches the external threaded structure. The structural radius of the spherical cavity 410 matches the structural radius of the ball head 411, and the depth of the spherical cavity 410 is greater than the structural radius of the ball head 411 and less than the structural diameter of the ball head 411.

[0027] In use, first take two of these devices, and then fixedly install the fixed bases 41 of the two devices on both sides of the patient's operating table respectively. According to the orientation of the patient's incision, rotate the hand crank 44. At this time, due to the connection of the threaded structure, the rotation of the second outer threaded rod 43 will cause the moving mounting seat 45 to undergo a directional displacement, thereby driving the hollow rod 31 to move to both sides of the patient's incision. When the patient completes the surgical incision, hook the retractor 1 at the incision, and rotate the rotating cap 39. Due to the connection of the threaded structure, the first outer threaded rod 38 will drive the first inner movable plate 35 to move, thereby changing the distance between the first inner movable plate 35 and the second inner movable plate 36, and further changing the elastic tension of the spiral spring 37 at this time, realizing the controllability of the elastic pressure. The elastic force of the spiral spring 37 can be transmitted to the retractor 1 through the wire 310, realizing the elastic tension on the patient's incision.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special retractor for thyroid surgery incisions, comprising a retractor (1) with a first fixing plate (2) provided at one end and capable of pulling the patient's incision, characterized in that: Further included is a controllable pulling mechanism (3), which internally includes a hollow rod (31) with a hollow interior, a first inner movable plate (35) and a second inner movable plate (36) placed inside the hollow rod (31) and capable of moving along the axial direction of the hollow rod (31), a spiral spring (37) placed between the first inner movable plate (35) and the second inner movable plate (36) and capable of providing an elastic pulling force, a wire (310) that drives the hook (1) to move directionally as the second inner movable plate (36) moves, and a first outer threaded rod (38) that can drive the first inner movable plate (35) to move when rotating, thereby changing the elastic pulling force of the spiral spring (37); and a horizontal distance adjusting mechanism (4), which internally includes a moving mounting base (45) that can be installed at the edge parts on both sides of the operating bed and can drive the hollow rod (31) to move along the length direction of the bed body, a second outer threaded rod (43) that can drive the moving mounting base (45) to move directionally when rotating, and a horizontal limiting rod (42) that can prevent the moving mounting base (45) from rotating.

2. The special retractor for the thyroid surgery incision according to claim 1, wherein: The controllable pulling mechanism (3) includes a hollow rod (31). An inner columnar part activity cavity (32) is arranged inside the hollow rod (31). A first inner threaded hole (33) communicating the outside space and one end face of the columnar part activity cavity (32) is arranged at one end of the hollow rod (31). A rod body through hole (34) communicating the outside space and the other end face of the columnar part activity cavity (32) is arranged at the other end of the hollow rod (31). A first inner movable plate (35) and a second inner movable plate (36) capable of moving along the axial direction of the columnar part activity cavity (32) are placed inside the hollow rod (31) within the columnar part activity cavity (32). A spiral spring (37) is fixedly installed between the first inner movable plate (35) and the second inner movable plate (36). A rotatable first outer threaded rod (38) is installed on one end face of the first inner movable plate (35) facing the first inner threaded hole (33) through a bearing. The rod body of the first outer threaded rod (38) is installed inside the first inner threaded hole (33) through a first thread structure. And a rotating cap (39) is arranged at one end of the first outer threaded rod (38) located outside the hollow rod (31). A wire (310) penetrating through the rod body through hole (34) is fixedly installed on one end face of the second inner movable plate (36) facing the rod body through hole (34). A second fixing plate (311) fixedly connected to the first fixing plate (2) is fixedly installed at one end of the wire (310).

3. The special retractor for thyroid surgical incision according to claim 2, characterized in that: The first thread structure includes an inner thread structure arranged in the first inner threaded hole (33) and an outer thread structure arranged on the rod body of the first outer threaded rod (38), and the inner thread structure matches the outer thread structure.

4. The special retractor for the thyroid surgery incision according to claim 3, wherein: The horizontal distance adjusting mechanism (4) includes two symmetrical fixed bases (41) and a movable mounting base (45). Between the two fixed bases (41), a rotatable second external threaded rod (43) is installed through a bearing, and a horizontal limiting rod (42) is fixedly installed. In the movable mounting base (45), a second internal threaded hole (47) connected to the second external threaded rod (43) through a second threaded structure and a limiting sliding hole (46) capable of sliding along the rod body of the horizontal limiting rod (42) are provided. On the upper surface of the movable mounting base (45), a longitudinal support rod (48) is fixedly installed. At the top of the longitudinal support rod (48), a hemispherical shell (49) with an integrated structure is provided. In the upper half of the hemispherical shell (49), a spherical cavity (410) with an open top is provided. In the spherical cavity (410), a rotatable ball head (411) is placed. On the upper spherical surface of the ball head (411), a longitudinal connecting rod (412) with an integrated structure is provided. At the top of the longitudinal connecting rod (412), a fixed sleeve (413) with an integrated structure and fixedly installed on the outer surface of the hollow rod (31) is provided. One end of the second external threaded rod (43) is fixedly installed with a hand crank (44).

5. The special retractor for thyroid surgery incision according to claim 4, wherein: The second threaded structure includes an internal threaded structure provided in the second internal threaded hole (47) and an external threaded structure provided on the rod body of the second external threaded rod (43), and the internal threaded structure matches the external threaded structure.

6. The special retractor for thyroid surgery incision according to claim 5, characterized in that: The structural radius of the spherical cavity (410) matches the structural radius of the ball head (411), and the depth of the spherical cavity (410) is greater than the structural radius of the ball head (411) and less than the structural diameter of the ball head (411).

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