Adjustable drag hook for minimally invasive thyroid surgery

Abstract

The invention relates to the technical field of medical instruments, and discloses a minimally invasive thyroid surgery adjustable drag hook which comprises a connecting base, at least one rotating block is installed at the bottom of the connecting base, a sleeve is rotationally connected to the bottom of the rotating block, and a drag hook body is movably connected to the interior of the sleeve through an adjusting assembly; the adjusting assembly comprises an adjusting groove, the adjusting groove is formed in the side wall of the sleeve, a connecting rod is installed at the top of the pull hook, the connecting rod and the adjusting groove are connected in a clamped mode, the adjusting groove comprises a straight groove and a plurality of clamping grooves, and the number of the clamping grooves is multiple. By means of the integrated adjusting knob and the multi-stage clamping groove structure, the length of the drag hook can be rapidly and stably adjusted, and shaking of the operation view caused by complex adjustment is effectively avoided. Meanwhile, the structure capable of being folded in a turnover mode allows the instrument to be flexibly switched between a single-hook mode and a double-hook mode, the direction of the drag hook can be finely adjusted, and the adaptability and operation convenience of the instrument to different operation requirements are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to an adjustable retractor for minimally invasive thyroid surgery. Background Art

[0002] The successful performance of minimally invasive thyroid surgery relies heavily on the effective retraction of the anterior neck flap and musculature by surgical retractors to establish and maintain a clear, stable surgical field. However, the adjustment mechanisms of various minimally invasive thyroid retractors currently in clinical use, whether suspended, frame-type, or integrated, all have inherent limitations. When adjusting the retraction height or angle during surgery, the surgeon must perform a series of cumbersome procedures, such as releasing the locking device, manually shifting the support arm, replacing components, and then re-securing them. This non-integrated sequence of steps disrupts surgical continuity and unnecessarily prolongs the procedure. More seriously, the adjustment action itself causes the entire retraction system to shake and shift, disrupting the stability of the established surgical field. This momentary change in field of view directly impacts the precision of the surgical procedure and significantly increases the risk of tissue damage during the identification and dissection of critical structures such as the recurrent laryngeal nerve and parathyroid gland. At the same time, the existing retractors are mostly adjusted in a segmented or gear-type manner, which cannot achieve continuous and precise fine-tuning. As a result, it is difficult to perform precise control when a small change in the exposure area is required, resulting in excessive or insufficient traction, which hinders the acquisition of an ideal surgical field. The fixed length and angle of these retractors are also difficult to adapt to the individual differences in the patient's neck morphology and thyroid anatomical position. In patients with special body shapes or tricky lesion locations, it is particularly difficult to establish a surgical space, which directly increases the overall difficulty of the operation. Therefore, overcoming the defects of the existing retractor adjustment technology, such as complex operation, affecting the stability of the field of view, and being unable to make precise fine-tuning, is a technical problem that needs to be solved urgently in this field. Summary of the Invention

[0003] In response to the deficiencies of the existing technology, the present invention provides an adjustable retractor for minimally invasive thyroid surgery, which solves the problem that the height adjustment operation of the existing retractor for minimally invasive thyroid surgery is complicated and cumbersome, which affects the stability of the surgical field of view and cannot achieve precise fine-tuning.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions: an adjustable retractor for minimally invasive thyroid surgery, comprising a connecting seat, at least one rotating block mounted at the bottom of the connecting seat, a sleeve rotatably connected to the bottom of the rotating block, and a retractor movably connected to the inside of the sleeve via an adjusting assembly; The adjustment assembly includes an adjustment slot, which is opened on the side wall of the sleeve. A connecting rod is installed on the top of the hook, and the connecting rod and the adjustment slot are clamped with each other.

[0005] Preferably, the adjustment groove includes a straight groove and a clamping groove, a plurality of the clamping grooves are provided and are evenly distributed on the side wall of the sleeve, and the straight groove and the clamping groove are connected, and the connecting rod is clamped inside the clamping groove.

[0006] Preferably, an adjusting knob is fixedly mounted on one end of the connecting rod located outside the sleeve, the adjusting knob is slidably connected to the outside of the sleeve, and anti-slip grooves are provided on the outside of the adjusting knob.

[0007] Preferably, there are at most two rotating blocks, and the two rotating blocks are symmetrically rotatably connected to the outside of the connecting seat.

[0008] Preferably, the pull hook consists of a straight rod portion, a curved portion and a lower curved portion, the straight rod portion is slidably connected to the inner cavity of the sleeve, the straight rod portion, the curved portion and the lower curved portion are integrally formed, and the open end of the lower curved portion is a blunt head.

[0009] Preferably, a spring is installed at the top end of the hook, and the other end of the spring is installed at the top inside the sleeve.

[0010] Preferably, a rotating seat is fixedly installed on the top of the connecting seat, and a positioning hook is rotatably connected to the top of the rotating seat.

[0011] Preferably, the adjustment groove further includes positioning beads, which are fixedly connected to both sides of the inner wall of the clamping groove, and the gap between two adjacent positioning beads is smaller than the diameter of the connecting rod.

[0012] The present invention provides an adjustable retractor for minimally invasive thyroid surgery, which has the following beneficial effects: 1. The present invention simplifies complex length adjustment into an intuitive single action through the integrated adjustment knob and multi-level slot structure, achieving fast and reliable height positioning without interfering with the overall stability of the instrument.

[0013] 2. The present invention uses two sets of retractors to pull the muscle tissue in the thyroid area, thereby expanding the internal cavity and ensuring the stability of the pulling, thereby avoiding body position shaking during the operation and improving the efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A perspective view of the present invention; Figure 2 Schematic diagram of the structure of the sleeve in the present invention; Figure 3 This is a schematic structural diagram of the hook in the present invention; Figure 4 It is a structural schematic diagram of the adjustment tank in the present invention.

[0015] Among them, 1. Connecting seat; 2. Rotating block; 3. Sleeve; 4. Hook; 41. Straight rod; 42. Bend; 43. Lower bend; 5. Connecting rod; 6. Adjusting knob; 7. Spring; 8. Adjusting slot; 81. Straight slot; 82. Snap-in slot; 83. Positioning bead; 9. Rotating seat; 10. Positioning hook. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the specification of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] Example: Please see the attached Figure 1 -Attached Figure 4 An embodiment of the present invention provides an adjustable retractor for minimally invasive thyroid surgery, comprising a connecting seat 1, a rotating seat 9 fixedly mounted on the top of the connecting seat 1, a positioning hook 10 rotatably connected to the top of the rotating seat 9, the connecting seat 1 can be hung on the headrest of the operating table through the positioning hook 10, and the rotating seat 9 and the positioning hook 10 can be rotated at will. At least one rotating block 2 is mounted on the bottom of the connecting seat 1, a sleeve 3 is rotatably connected to the bottom of the rotating block 2, and a retractor 4 is movably connected to the inside of the sleeve 3 through an adjustment component. During minimally invasive thyroid surgery, after the retractor 4 is inserted into the affected muscle tissue, the sleeve 3 can be used to adjust the direction of the retractor 4 so that the retractor 4 better fits the affected muscle tissue. A spring 7 is installed at the top of the hook 4, and the other end of the spring 7 is installed at the top of the sleeve 3. The spring 7 is used to push the hook 4 downward. When the position of the hook 4 is adjusted, the adjusted position of the hook 4 can be stabilized to avoid shaking and slipping during the puncture process. The hook 4 is composed of a straight rod 41, a curved part 42 and a lower curved part 43. The straight rod 41 is slidably connected to the internal cavity of the sleeve 3. By adjusting the position of the straight rod 41 by adjusting the adjustment assembly, the overall position of the straight rod 41, the curved part 42 and the lower curved part 43 can be adjusted, thereby achieving the need for suspension at different heights. The straight rod 41, the curved part 42 and the lower curved part 43 are integrally formed, and the open end of the lower curved part 43 is blunt. The lower curved part 43 is slightly bent downward, so that when hanging, the lower curved part 43 may cause damage to the affected area. Secondly, the open end of the lower curved part 43 is set to a blunt end to further reduce damage.

[0018] Please see the attached Figure 1 , Attachment Figure 2 and attached Figure 4When the hook 4 is in the proper position, the connecting rod 5 is screwed into the corresponding engaging groove 82 again, and the hook 4 is pushed downward by the spring 7, so that the adjustment of the overall position of the hook 4 can be completed. At this time, the connecting rod 5 is engaged with the inner part of the engaging groove 82 to lock the position of the hook 4, thereby reducing the shaking of the hook 4 during the puncture process. An adjusting knob 6 is fixedly installed at one end of the connecting rod 5 located on the outside of the sleeve 3. The adjusting knob 6 is slidably connected to the outside of the sleeve 3, and anti-slip grooves are provided on the outside of the adjusting knob 6. After adding the adjusting knob 6, when adjusting the position of the hook 4, the connecting rod 5 can be directly driven to rotate by the adjusting knob 6 to avoid direct contact with the hook 4. At the same time, the anti-slip grooves added to the outside of the adjusting knob 6 can further increase friction, thereby facilitating the adjustment operation of the hook 4.

[0019] Please see the attached Figure 4 The adjustment groove 8 also includes positioning beads 83, which are fixedly connected to both sides of the inner wall of the snap-fit ​​groove 82, and the gap between two adjacent positioning beads 83 is smaller than the diameter of the connecting rod 5. After the position adjustment of the hook 4 is completed, the connecting rod 5 is inserted into the snap-fit ​​groove 82 area, and then, under the action of the spring 7 and the weight of the affected part, the connecting rod 5 is squeezed and enters the area formed by the two positioning beads 83 and the snap-fit ​​groove 82, thereby realizing the positioning of the position of the connecting rod 5.

[0020] Please see the attached Figure 1 The rotating blocks 2 include at most two, and a set of sleeves 3 and hooks 4 are installed at the bottom of each rotating block 2. During surgery, the two hooks 4 can be used to perform multi-point positioning of the affected area, further increasing the cavity created by the hooks. The two rotating blocks 2 are symmetrically rotated and connected to the outside of the connecting seat 1. The two rotating blocks 2 are connected by a snap-fit ​​assembly. When performing double-hook suspension, the snap-fit ​​assembly is used to ensure that the connection between the two sets of hooks is stable.

[0021] Working principle: During laparoscopic minimally invasive thyroid surgery, the lower curved portion 43 of the retractor is inserted into the muscle tissue of the affected part of the patient's sternal convexity, and then the positioning hook 10 is hung on the head frame set up on the operating table to complete the fixation. This is a conventional operation in the prior art and will not be described in detail here. In the present invention, double retractors can be used to pull and fix the affected part to improve the positioning effect of the affected part. At the same time, when height adjustment is required, it is only necessary to push the adjustment knob 6 upwards to cause the connecting rod 5 to disengage from the clamping groove 82. Then turn the adjusting knob 6 to make the connecting rod 5 reach the position of the straight groove 81, and then continue to push the adjusting knob 6 to adjust the area where the connecting rod 5 is located. After adjusting to the appropriate position, turn the connecting rod 5 back into the corresponding clamping groove 82 area, and then release the adjusting knob 6. At this time, under the action of the spring 7, the overall length of the retractor can be adjusted. After the adjustment is completed, when hanging the affected muscle tissue, the weight of the body can also ensure that the connecting rod 5 always remains in the clamping groove 82 area, thereby completing the fastening of the retractor.

[0022] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable retractor for minimally invasive thyroid surgery, comprising a connecting seat (1), characterized in that: At least one rotating block (2) is installed at the bottom of the connecting seat (1); the bottom of the rotating block (2) is rotatably connected to a sleeve (3); and the inside of the sleeve (3) is movably connected to a hook (4) via an adjusting component; The adjustment assembly comprises an adjustment slot (8), the adjustment slot (8) being provided on the side wall of the sleeve (3), a connecting rod (5) being mounted on the top of the pull hook (4), and the connecting rod (5) and the adjustment slot (8) being engaged with each other.

2. The adjustable retractor for minimally invasive thyroid surgery according to claim 1, characterized in that: The adjustment groove (8) comprises a straight groove (81) and a clamping groove (82), a plurality of the clamping grooves (82) are provided and are evenly distributed on the side wall of the sleeve (3), and the straight groove (81) and the clamping groove (82) are connected, and the connecting rod (5) is clamped inside the clamping groove (82).

3. The adjustable retractor for minimally invasive thyroid surgery according to claim 1, characterized in that: An adjusting knob (6) is fixedly mounted on one end of the connecting rod (5) located outside the sleeve (3), the adjusting knob (6) is slidably connected to the outside of the sleeve (3), and anti-slip grooves are provided on the outside of the adjusting knob (6).

4. The adjustable retractor for minimally invasive thyroid surgery according to claim 1, characterized in that: The rotating blocks (2) include at most two, and the two rotating blocks (2) are symmetrically rotatably connected to the outside of the connecting seat (1).

5. The adjustable retractor for minimally invasive thyroid surgery according to claim 1, characterized in that: The pull hook (4) consists of a straight rod portion (41), a curved portion (42) and a lower curved portion (43); the straight rod portion (41) is slidably connected to the inner cavity of the sleeve (3); the straight rod portion (41), the curved portion (42) and the lower curved portion (43) are integrally formed, and the open end of the lower curved portion (43) is blunt.

6. The adjustable retractor for minimally invasive thyroid surgery according to claim 1, characterized in that: A spring (7) is installed at the top end of the pull hook (4), and the other end of the spring (7) is installed at the top inside the sleeve (3).

7. The adjustable retractor for minimally invasive thyroid surgery according to claim 1, characterized in that: A rotating seat (9) is fixedly mounted on the top of the connecting seat (1), and a positioning hook (10) is rotatably connected to the top of the rotating seat (9).

8. The adjustable retractor for minimally invasive thyroid surgery according to claim 2, characterized in that: The adjustment groove (8) further comprises positioning beads (83), wherein the positioning beads (83) are fixedly connected to both sides of the inner wall of the clamping groove (82), and the gap between two adjacent positioning beads (83) is smaller than the diameter of the connecting rod (5).

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