CN111067581B

CN111067581B - Inflation-free thyroid retractor

Info

Publication number: CN111067581B
Application number: CN201911390221.3A
Authority: CN
Inventors: 邱学文; 鲁灵慧; 赵敏健; 姚东节; 胡涛
Original assignee: Wuhan Bbt Medical Technology Development Co ltd
Current assignee: Wuhan Bbt Medical Technology Development Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-11-24
Anticipated expiration: 2039-12-27
Also published as: CN111067581A

Abstract

The invention discloses an inflation-free thyroid retractor. The smoke exhaust device comprises a guide pipe for guiding smoke to exhaust, a base plate, a vertical plate connected with the base plate, and a lifting plate bent downwards from the vertical plate, wherein a chute is formed in the base plate, a pair of rotatable main retracting blades and a pair of rotatable auxiliary retracting blades are symmetrically arranged on two sides of the chute, the pair of main retracting blades and the pair of auxiliary retracting blades are constructed and designed to be shifted to rotate eccentrically by a main push-pull rod and an auxiliary push-pull rod which slide linearly along the chute respectively, and the main push-pull rod and the auxiliary push-pull rod are connected with the main push-pull rod and the auxiliary push; the main transmission rod and the auxiliary transmission rod penetrate through one end of a positioning sleeve fixed on the vertical plate and are respectively only coupled with a first knob and a second knob sleeved on the positioning sleeve, the first knob and the second knob are axially limited on the positioning sleeve and can rotate around the positioning sleeve to drive the main transmission rod and the auxiliary transmission rod to linearly move, so that the pair of main retracting blades and the pair of auxiliary retracting blades are mutually close or open for carrying out thyroscopic surgery.

Description

Inflation-free thyroid retractor

Technical Field

The invention relates to the technical field of medical instruments, in particular to an inflation-free thyroid retractor, which is particularly suitable for devices for various thyroid diseases.

Technical Field

The traditional endoscopic thyroid surgery needs to open a tunnel in front of the chest from the areola and dissociate the skin flaps in front of the neck and the upper chest, has the advantages that no incision is left in the front of the neck and the upper chest after the surgery, but has the defect of larger surgical wound, the surgical incision is far away from the focus and has no natural lacuna, so that the subcutaneous tissues of the neck and the chest are required to be separated in a large range and filled with CO₂The gas establishes an operating space, thereby resulting in CO₂Blood is absorbed through the wound surface, and the excision and the removal of large tumors are difficult.

In 2003, if reports that the endoscopic thyroid surgery is performed through the subclavian approach and the China journal of general surgery in 2006 and 4 months, inflation is not needed, but a skin flap is suspended by a draw hook to establish an inflation-free operation space. In 2009 wu national ocean et al, the "technical point of transoral access endoscopic thyroidectomy" reported transoral access inflatable endoscopic surgery. In 2013, Nakajo et al reported a single-hole gasless endoscopic thyroid surgery through the oral vestibule in "Trans-oral video-assisted nerve surgery (TOVANS). alpha.new transducer technique of endoscopic thyroid surgery with gasless pressure".

An inflation-free transoral endoscopic thyroid surgery, as shown in figure 1, is to incise a patient's mouth lip 1 by using an electric knife and electric coagulation forceps, pass through a jawbone 3 and reach a thyroid 2, incise the skin of the places comprehensively, suspend skin flaps by using instruments, and provide a larger operation space for the surgery by using the instruments so as to be convenient for a doctor to operate. The operation path is positioned in a blank area between the mental nerves 4 on two sides of the mandible, and the operation can be carried out without irradiating nerve damage to the face of the patient.

At present, no comprehensive treatment device exists for thyroid gland inflation-free scar-free treatment, most of thyroid gland inflation-free scar-free treatment devices are only used for underarm or open operation, and meanwhile, doctors and patients hope to know different effects before and after the operation clearly and visually.

Disclosure of Invention

In order to adapt to the oral inflation-free scar-free thyroid surgery and enable a doctor to know different effects before and after the thyroid surgery more clearly and intuitively, the invention provides the oral inflation-free thyroid retraction instrument, which solves the problems that the operation is carried out after the oral cavity of a patient is entered, the operation space is insufficient, the thyroid lesion is difficult to be fully exposed, the gas between a skin flap and subcutaneous tissues after the operation is difficult to be exhausted, and thrombus is easy to form.

An inflation-free thyroid retraction instrument comprises a guide pipe for guiding smoke to be exhausted, a base plate attached to the guide pipe into a whole, a vertical plate connected with the top of the base plate, and a lifting plate bent and extended downwards from one side of the vertical plate, wherein a sliding groove parallel to the guide pipe is formed in the base plate, a pair of rotatable main retraction blades and a pair of auxiliary retraction blades are symmetrically arranged on two sides of one end, away from the vertical plate, of the sliding groove, the pair of main retraction blades and the pair of auxiliary retraction blades are constructed and designed to be respectively shifted to rotate eccentrically by a main push-pull rod and an auxiliary push-pull rod which linearly slide along the sliding groove, the main push-pull rod and the auxiliary push-pull rod are sequentially stacked in the sliding groove from top to bottom or from bottom to top, and a first claw and a second claw which are respectively connected with a main transmission rod and an; the main transmission rod and the auxiliary transmission rod penetrate through one end of a positioning sleeve fixed on the vertical plate and are respectively only coupled with a first knob and a second knob sleeved on the positioning sleeve, and the first knob and the second knob are axially limited on the positioning sleeve and can rotate around the positioning sleeve to be used for driving the main transmission rod and the auxiliary transmission rod to linearly move so as to enable the pair of main retracting blades and the pair of auxiliary retracting blades to be mutually close or open.

Preferably, a pair of front forks are symmetrically arranged on two sides of one end, away from the vertical plate, of the chute, a pair of main retracting blades and a pair of auxiliary retracting blades are hinged between the front forks and the base plate, and the main retracting blades are stacked above the auxiliary retracting blades; the vertical plate is provided with a non-circular positioning hole for the positioning sleeve to pass through; at least one pair of guide tubes are attached to one surface of the base plate, which is far away from the sliding groove, and a surgical channel through which the electric scalpel and the endoscope can pass is formed between the pair of guide tubes.

Furthermore, the front end of the main push-pull rod is connected with a pin passing through pin holes on a pair of main retracting blades, and a first Y-shaped claw is vertically erected at the other end of the main push-pull rod; the front part of the auxiliary push-pull rod is provided with a notch which is perpendicular to the auxiliary push-pull rod and extends to the front forks at two sides, the auxiliary retracting blade is connected with a pin accommodated in the notch, so that the auxiliary retracting blade can be unfolded by 180 degrees, and a Y-shaped claw II is vertically erected at the other end of the auxiliary push-pull rod; the main retracting blade is longer than the auxiliary retracting blade, and the opening angle is less than 180 degrees; the main transmission rod and the auxiliary transmission rod are respectively provided with a pair of mutually spaced protruding parts at one end close to the first claw and the second claw along the axial direction, the protruding parts all protrude along the radial direction of the main transmission rod and the auxiliary transmission rod, the distance between the spaced protruding parts is larger than the thickness of the first claw and the second claw, the distance between the fork heads of the first claw and the second claw is larger than the thickness of the main transmission rod and the auxiliary transmission rod, so that the main push-pull rod and the auxiliary push-pull rod can respectively move along with the main transmission rod and the auxiliary transmission rod and can be detached, the main transmission rod and the auxiliary transmission rod are stacked according to the stacking sequence of the main push-pull rod and the auxiliary push-pull rod, and the protruding parts of the main transmission rod or the auxiliary transmission rod positioned below are provided.

The positioning sleeve comprises a sleeve, a blocking ring, a main push-pull rod sleeve and an auxiliary push-pull rod sleeve, a channel sequentially penetrates through the sleeve, the main push-pull rod sleeve and the auxiliary push-pull rod sleeve, the cross section of the sleeve is matched with the shape of the positioning hole, one end, far away from the blocking ring, of the sleeve, the main push-pull rod sleeve and the auxiliary push-pull rod sleeve is respectively provided with a first annular clamping groove, a second annular clamping groove and a third annular clamping groove, a first gasket and the blocking ring are detachably fixed at the two ends of the sleeve to prevent the sleeve from moving along the axis relative to the vertical plate, the channel further extends to the circumferential surface of one side of the main push-pull rod sleeve and the circumferential surfaces of the two sides of the auxiliary push-pull rod sleeve to form notches, and a first wire groove and a second wire groove on the surfaces of the main push-pull rod sleeve and the.

Furthermore, the first knob and the second knob are respectively sleeved on the outer peripheries of the main push-pull rod sleeve and the auxiliary push-pull rod sleeve, internal threads coupled with the first screw groove and the second screw groove are respectively arranged on the inner peripheries of the first knob and the second knob, the second gasket is clamped in the second annular clamping groove, a variable diameter step matched with the fourth gasket is arranged at one end, away from the sleeve, of the inner periphery of the first knob, the fourth gasket is attached to one surface, facing the sleeve, of the second gasket, and a ring cover and the variable diameter step which are in threaded connection with the first knob are arranged on two sides of the second gasket and the fourth gasket together to enable the first knob to be axially fixed along the main push-pull;

the third gasket is clamped in the third annular clamping groove, a reducing step matched with the third gasket is arranged at one end, far away from the sleeve, of the inner periphery of the second knob, and a ring cover in threaded connection with the second knob and the reducing step are arranged on two sides of the third gasket together to enable the second knob to be axially fixed along the auxiliary push-pull rod sleeve.

Further, the fourth spacer has a tongue extending into the channel for preventing the main push-pull rod from moving in the direction of the second knob after the main retracting blade is folded, and the third spacer is also provided with a tongue extending into the channel for limiting the distance between the auxiliary push-pull rod sleeves on both sides of the channel, preventing the auxiliary push-pull rod sleeves from clamping the auxiliary transmission rod, and preventing the auxiliary push-pull rod from moving in the direction of the second knob after the auxiliary retracting blade is folded.

The invention has the advantages that the focus of a patient can be comprehensively presented in the eyes of doctors, the whole operation process does not need to be aerated, the consequence of thrombus caused by the gas entering the blood vessel of the human body is avoided, and no scar can be realized after the operation.

Other designs of the device are somewhat described in further detail in the detailed description.

Drawings

Fig. 1 is a route diagram for oral gasless thyroscopic surgery;

fig. 2 is a schematic structural view of an inflation-free thyroid retractor according to the present invention;

fig. 3 is a schematic view of the assembly of the push-pull rod and the transmission rod of the inflation-free thyroid retractor according to the present invention;

FIG. 4 is a schematic view of the assembly of a retaining sleeve and a drive rod of an inflation-free thyroid retractor of the present invention;

fig. 5 is a schematic diagram of a base plate structure of an inflation-free thyroid retractor according to the present invention;

FIG. 6 is a schematic view of the assembly of the main retracting blades of an inflation-free thyroid retractor according to the present invention;

FIG. 7 is a schematic view of a minor retractor blade assembly of an inflation-free thyroid retractor of the present invention;

FIG. 8 is a schematic view of the positioning sleeve assembly of an inflation-free thyroid retractor of the present invention;

fig. 9 is a schematic view of a knob structure of an inflation-free thyroid retractor according to the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

assembly as shown in fig. 2, 3, 4: an inflation-free thyroid retractor comprises a conduit 10 for guiding smoke to be exhausted, a base plate 20 attached with the conduit 10 into a whole, the guide tube type solar water heater comprises a vertical plate 30 connected with the top of a base plate 20, and a lifting plate 40 bent and extended downwards from one side of the vertical plate 30, wherein a chute 11 parallel to the guide tube 10 is arranged on the base plate 20, a pair of rotatable main retracting blades 50 and a pair of rotatable auxiliary retracting blades 60 are symmetrically arranged on two sides of one end, away from the vertical plate 30, of the chute 11, the pair of main retracting blades 50 and the pair of auxiliary retracting blades 60 are constructed and designed to be shifted to rotate eccentrically by a main push-pull rod 51 and an auxiliary push-pull rod 61 which respectively slide along the chute 11 in a linear mode, the main push-pull rod 51 and the auxiliary push-pull rod 61 are sequentially stacked in the chute 11 from top to bottom or from bottom to top, and a first claw 52 and a second claw 62 which are respectively connected with a main transmission rod; the main transmission rod 53 and the auxiliary transmission rod 63 penetrate through one end of the positioning sleeve 70 fixed on the vertical plate 30 and are respectively coupled with only the first knob 81 and the second knob 82 sleeved on the positioning sleeve 70, and when the first knob 81 and the second knob 82 rotate around the positioning sleeve 70, the main transmission rod 53 and the auxiliary transmission rod 63 are respectively driven to linearly move, so that the pair of main retracting blades 50 and the pair of auxiliary retracting blades 60 are mutually closed or opened.

Specifically, in fig. 2 and 5, a pair of front forks 12 are symmetrically disposed on both sides of one end of the chute 11 away from the vertical plate 30, a pair of primary retracting blades 50 and a pair of secondary retracting blades 60 are hinged between the front forks 12 and the base plate 20, the pair of primary retracting blades 50 is stacked above the pair of secondary retracting blades 60, and the front forks 12 are used for preventing the pair of primary retracting blades 50 and the pair of secondary retracting blades 60 from slipping off one side of the base plate 20. The vertical plate 30 is provided with a positioning hole 31 for the positioning sleeve 70 to pass through, and the section of the positioning hole 31 is a non-circular polygon for preventing the first knob 81 or the second knob 82 from driving the positioning sleeve 70 to rotate. The pair of guide tubes 10 are attached to one surface of the base plate 20, which is far away from the chute 11, an operation channel 13 for the electric coagulation knife and the endoscope to pass through is formed between the pair of guide tubes 10, and the guide tubes 10 are communicated with an air suction device and used for sucking dirty blood, steam generated when the electric coagulation knife heats tissues and smoke formed after fat is heated, so that the view field of the endoscope is clear. The lifting plate 40 is secured to the surgical frame by fasteners 90.

Fig. 6 and 7 are assembly views of the main retracting blade 50 and the main thrust rod 51, and assembly views of the auxiliary retracting blade 60 and the auxiliary thrust rod 61, referring to fig. 2, the main retracting rod 51 is overlapped above the auxiliary retracting rod 61, the front end of the main retracting rod 51 is connected with a pin 55 penetrating through pin holes 56 of a pair of main retracting blades 50, and a first Y-shaped claw 52 is vertically erected at the other end of the main retracting rod 51; the front part of the auxiliary push-pull rod 61 is provided with a gap 65 which is vertical to the auxiliary push-pull rod 61 and extends to the front forks 12 at two sides, the auxiliary retracting blade 60 is connected with a pin 55 which is accommodated in the gap 65, so that the auxiliary retracting blade 60 can be unfolded by 180 degrees, and a Y-shaped claw II 62 is vertically erected at the other end of the auxiliary push-pull rod 61; the auxiliary push-pull rod 61 is longer than the main push-pull rod 51, the main retracting blade 51 is longer than the auxiliary retracting blade 61, the opening angle is less than 180 degrees, the auxiliary retracting blade 61 is used for opening the skin flap below the mandible 3 towards two sides, and the auxiliary retracting blade 61 is unfolded at 180 degrees to open the skin flap vertically above the main retracting blade 51.

Fig. 8a and 8b are schematic structural views of the positioning sleeve 70, the positioning sleeve 70 includes a sleeve 71, a stop ring 73, a primary push-pull rod sleeve 75, and a secondary push-pull rod sleeve 78, a passage 74 sequentially penetrates through the sleeve 71 and the primary push-pull rod sleeve 75, the cross section of the sleeve 71 at two ends of the auxiliary push-pull rod sleeve 78 is matched with the shape of the positioning hole 31, the sleeve 71, the main push-pull rod sleeve 75 and one end, far away from the stop ring 73, of the auxiliary push-pull rod sleeve 78 are respectively provided with a first annular clamping groove 72, a second annular clamping groove 77 and a third annular clamping groove 78, a first gasket 101 and the stop ring 73 are detachably fixed at two ends of the sleeve 75, so that the sleeve 70 cannot move along the axis relative to the vertical plate 30, the channel 74 further extends to the circumferential surface on one side of the main push-pull rod sleeve 75 and the circumferential surfaces on two sides of the auxiliary push-pull rod sleeve 78 to form notches, and the first wire groove 54 and the second wire groove 64 on the surfaces of the main transmission rod 53 and the auxiliary transmission rod 63 in the channel 74 are respectively;

referring to fig. 2, 4, 8a, 8b, 9a and 9b, a first knob 81 and a second knob 82 are respectively sleeved on the outer peripheries of the primary push-pull rod sleeve 75 and the secondary push-pull rod sleeve 76, inner peripheries of the first knob 81 and the second knob 82 are respectively provided with an internal thread coupled with the first thread groove 54 and the second thread groove 64 for pushing the primary transmission rod 53 and the secondary transmission rod 63 to move linearly, and a second gasket 102 is clamped in the annular second clamping groove 77. referring to fig. 9a and 9b, one end of the inner periphery of the first knob 81 far away from the sleeve 71 is provided with a reducing step 83 matched with a fourth gasket 104, the fourth gasket 104 is attached to one surface of the second gasket 102 facing the sleeve 71, and a ring cover connected with the thread 84 of the first knob 81 is arranged on two sides of the second gasket 102 and the fourth gasket 104 together with the reducing step 83 to axially fix the first knob 81 along the primary push-pull rod sleeve 75. The third gasket 103 is clamped in the third annular clamping groove 78, one end of the inner periphery of the second knob 82, which is far away from the sleeve 71, is provided with a reducing step 83 matched with the third gasket 103, a ring cover connected with the second knob 82 through threads 84, and the reducing step 83 and the third gasket 103 are arranged on two sides of the third gasket 103 together to enable the second knob 82 to be axially fixed along the auxiliary push-pull rod sleeve 76. The fourth spacer 102 has a tongue 105 extending into the channel 74 for preventing the main push-pull rod 51 from moving too far in the direction of the second knob 82 and breaking the pin 55 of the main push-pull rod 51, and the third spacer 103 also has a tongue 105 extending into the channel 74 for limiting the distance between the secondary push-pull rod sleeves 76 on both sides of the channel 74 and preventing the secondary push-pull rod sleeves 76 from clamping the secondary transmission rod 63, and preventing the secondary push-pull rod 61 from moving too far in the direction of the second knob 82 and breaking the pin 55 on the secondary retracting blade 60.

The second spacer 102, the third spacer 103 and the fourth spacer 104 are all provided with radially extending slits 106, so that the second spacer 102, the third spacer 103 and the fourth spacer 104 can be extended and contracted in the radial direction and are used for being clamped in the push-pull rod sleeve 76, the second annular clamping groove 77 or the third annular clamping groove 78.

Referring to fig. 3, a pair of protrusions 56 are axially arranged at intervals at one end of each of the primary transmission rod 53 and the secondary transmission rod 63 close to the first claw 52 and the second claw 62, the protrusions 56 radially protrude out of the primary transmission rod 53 and the secondary transmission rod 63, the distance between the protrusions 56 is larger than the thickness of the first claw 52 and the second claw 62, and the distance between the forks of the first claw 52 and the second claw 62 is larger than the thickness of the primary transmission rod 53 and the thickness of the secondary transmission rod 63, so that the primary push-pull rod 51 and the secondary push-pull rod 61 can respectively move along with the primary transmission rod 53 and the secondary transmission rod 63 and can be detached. The primary drive link 53 is located above the secondary drive link 63, and the primary drive link 53 passes through a pair of projections 56 of the secondary drive link 63.

The operation process of the device of the invention is as follows:

referring to fig. 1, the device enters through the oral cavity of a human body, skin is cut from the position of 1 lip part to the focal position of thyroid gland 2, a first knob is needed to push a main push-pull rod to open main retracting blades in the process, a cavity channel is built step by step, a second knob pushes an auxiliary push-pull rod, so that the auxiliary retracting blades are unfolded, skin flaps above the cavity built by the main retracting blades are prevented from dropping, and a guide pipe mainly absorbs smoke, water vapor and blood stagnation generated in the operation process to prevent pollution to the cavity mirror.

After the isocavity channel is established, the lifting plate is fixed on the operating table by using a fastener.

Surgery is performed using a surgical instrument.

After the procedure is completed, the device is removed.

The width of the base plate is smaller than the distance between the mental nerves on the two sides of the lower jaw, so that the damage to the facial nerves can be avoided when the operation is carried out, and meanwhile, the main retracting blade and the auxiliary retracting blade are adopted to coordinately establish the cavity channel, so that the mode of establishing the cavity channel by inflation is avoided, the formation of postoperative thrombus is avoided, the path of the operation implementation is short, the wound is small, and the postoperative face has no scar.

Claims

1. An inflation-free thyroid retractor is characterized in that: the smoke exhaust device comprises a guide pipe for guiding smoke to exhaust, a base plate attached to the guide pipe into a whole, a vertical plate connected with the top of the base plate, and a lifting plate bent downwards and extending from one side of the vertical plate, wherein a sliding groove parallel to the guide pipe is formed in the base plate, a pair of rotatable main retracting blades and a pair of rotatable auxiliary retracting blades are symmetrically arranged on two sides of one end, away from the vertical plate, of the sliding groove, the pair of main retracting blades and the pair of auxiliary retracting blades are constructed and designed to be shifted to rotate eccentrically by a main push-pull rod and an auxiliary push-pull rod which slide linearly along the sliding groove respectively, the main push-pull rod and the auxiliary push-pull rod are sequentially stacked in the sliding groove from top to bottom or from bottom to top, and a first claw and a second claw which are connected with; the main transmission rod and the auxiliary transmission rod penetrate through one end of a positioning sleeve fixed on the vertical plate and are respectively only coupled with a first knob and a second knob sleeved on the positioning sleeve, and the first knob and the second knob are axially limited on the positioning sleeve and can rotate around the positioning sleeve to be used for driving the main transmission rod and the auxiliary transmission rod to linearly move so as to enable the pair of main retracting blades and the pair of auxiliary retracting blades to be mutually close or open.

2. The inflation-free thyroid retractor according to claim 1, wherein: a pair of front forks are symmetrically arranged on two sides of one end, away from the vertical plate, of the sliding chute, a pair of main retracting blades and a pair of auxiliary retracting blades are hinged between the front forks and the base plate, and the main retracting blades are stacked above the auxiliary retracting blades; the vertical plate is provided with a non-circular positioning hole for the positioning sleeve to pass through; at least one pair of guide tubes are attached to one surface of the base plate, which is far away from the sliding groove, and a surgical channel through which the electric scalpel and the endoscope can pass is formed between the pair of guide tubes.

3. The inflation-free thyroid retractor according to claim 2, wherein: the front end of the main push-pull rod is connected with a pin penetrating through pin holes on a pair of main retracting blades, and a first Y-shaped claw is vertically erected at the other end of the main push-pull rod; the front part of the auxiliary push-pull rod is provided with a notch which is perpendicular to the auxiliary push-pull rod and extends to the front forks at two sides, the auxiliary retracting blade is connected with a pin accommodated in the notch, so that the auxiliary retracting blade can be unfolded by 180 degrees, and a Y-shaped claw II is vertically erected at the other end of the auxiliary push-pull rod; the main retracting blade is longer than the auxiliary retracting blade, and the opening angle is less than 180 degrees; the main transmission rod and the auxiliary transmission rod are respectively provided with a pair of mutually spaced protruding parts at one end close to the first claw and the second claw along the axial direction, the protruding parts all protrude along the radial direction of the main transmission rod and the auxiliary transmission rod, the distance between the spaced protruding parts is larger than the thickness of the first claw and the second claw, the distance between the fork heads of the first claw and the second claw is larger than the thickness of the main transmission rod and the auxiliary transmission rod, so that the main push-pull rod and the auxiliary push-pull rod can respectively move along with the main transmission rod and the auxiliary transmission rod and can be detached, the main transmission rod and the auxiliary transmission rod are stacked according to the stacking sequence of the main push-pull rod and the auxiliary push-pull rod, and the protruding parts of the main transmission rod or the auxiliary transmission rod positioned below are provided.

4. The inflation-free thyroid retractor according to claim 2, wherein: the positioning sleeve comprises a sleeve, a blocking ring, a main push-pull rod sleeve and an auxiliary push-pull rod sleeve, a channel penetrates through the sleeve, the main push-pull rod sleeve and the auxiliary push-pull rod sleeve in sequence, the cross section of the sleeve is matched with the shape of the positioning hole, one end, far away from the blocking ring, of the sleeve, the main push-pull rod sleeve and the auxiliary push-pull rod sleeve is respectively provided with a first annular clamping groove, a second annular clamping groove and a third annular clamping groove, a first gasket and the blocking ring are detachably fixed at the two ends of the sleeve to prevent the sleeve from moving along the axis relative to a vertical plate, the channel further extends to the circumferential surface of one side of the main push-pull rod sleeve and the circumferential surfaces of the two sides of the auxiliary push-pull rod sleeve to form notches, and a first push-pull wire groove and a second wire groove on the surfaces of.

5. The inflation-free thyroid retractor according to claim 4, wherein: the first knob and the second knob are respectively sleeved on the peripheries of the main push-pull rod sleeve and the auxiliary push-pull rod sleeve, internal threads coupled with the first screw groove and the second screw groove are respectively arranged on the inner peripheries of the first knob and the second knob, the second gasket is clamped in the second annular clamping groove, a variable diameter step matched with the fourth gasket is arranged at one end, away from the sleeve, of the inner periphery of the first knob, the fourth gasket is attached to one surface, facing the sleeve, of the second gasket, and the ring cover and the variable diameter step which are in threaded connection with the first knob are arranged on two sides of the second gasket and the fourth gasket together to enable the first knob to be axially fixed along the main push-;

6. The inflation-free thyroid retractor according to claim 5, wherein: the third spacer is also provided with a tongue piece extending into the channel and used for limiting the distance between the auxiliary push-pull rod sleeves at two sides of the channel and preventing the auxiliary push-pull rod sleeves from clamping the auxiliary transmission rod, and the auxiliary push-pull rod sleeves from moving towards the second knob direction after the auxiliary retracting blade is folded.