Anterior cervical retractor

Abstract

The utility model discloses an anterior cervical retractor which comprises a handle and a retractor body. The handle is provided with a holding end and a connecting end, and the holding end and the connecting end are arranged in a spaced mode in the first direction; the drag hook comprises a connecting part and a hook head part, one end of the connecting part is connected with the hook head part, the other end of the connecting part is rotatably connected with the connecting end through a rotating shaft, the rotating axis of the rotating shaft extends in the second direction, and the hook head part faces the side, perpendicular to the second direction, of the connecting part; the first direction is perpendicular to the second direction. The traction angle of the anterior cervical retractor is adjustable, and the use effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and in particular to an anterior cervical retractor. Background Art

[0002] Anterior cervical surgery has become an effective method for treating diseases such as cervical disc herniation, cervical fractures, cervical tumors, and nerve root or vascular compression caused by hyperplasia of the uncovertebral joint.

[0003] During anterior cervical surgery, it is necessary to retract and protect many tissues such as the trachea and esophagus to expose the surgical field. However, the existing retractors in clinical practice have defects such as inability to adjust the retraction angle, resulting in ineffective retraction of tissues such as the trachea and esophagus during the operation, thus blocking the surgical vision and being inconvenient to use. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the utility model is to provide an anterior cervical retractor with an adjustable retraction angle and better use effect.

[0005] The anterior cervical retractor according to an embodiment of the utility model includes a handle and a retractor. The handle has a grasping end and a connecting end, and the grasping end and the connecting end are spaced apart along a first direction; the retractor includes a connecting portion and a hook head portion. One end of the connecting portion is connected to the hook head portion, and the other end of the connecting portion is rotatably connected to the connecting end through a rotating shaft. The rotation axis of the rotating shaft extends along a second direction, and the hook head portion faces the side of the connecting portion perpendicular to the second direction, and the first direction and the second direction are perpendicular to each other.

[0006] The anterior cervical retractor according to an embodiment of the utility model, by providing a retractor with a hook head portion, the retractor with a hook head portion can better retract and protect tissues such as the trachea and esophagus to expose the surgical field as much as possible, and at the same time can also reduce the possibility of damage to tissues such as the trachea and esophagus during the operation; by making the other end of the connecting portion rotatably connected to the connecting end along the second direction, that is, the relative angle between the handle and the retractor can be adjusted, so that the retraction of different positions and directions of the surgical incision can be realized by adjusting the relative angle between the retractor and the handle, and at the same time, the surgeon can perform the surgical operation in the most comfortable and habitual posture as much as possible, increasing the convenience of using the anterior cervical retractor.

[0007] In some embodiments, the retractor includes a fixed state and a rotating state, and the retractor can move along the second direction to switch between the fixed state and the rotating state;

[0008] In the fixed state, the other end of the connecting portion and the connecting end abut against each other in the second direction to fix the relative positions of the hook and the handle.

[0009] In the rotating state, the other end of the connecting portion and the connecting end are spaced apart in the second direction, so that the hook is rotatable relative to the handle.

[0010] In some embodiments, a first groove is formed on the outer peripheral surface of the rotating shaft, and the anterior cervical hook further includes a limiting member.

[0011] In the fixed state, the limiting member is inserted into the first groove, so that the other end of the connecting portion and the connecting end abut against each other in the second direction.

[0012] In the rotating state, the limiting member is separated from the first groove, so that the other end of the connecting portion and the connecting end can be spaced apart in the second direction.

[0013] In some embodiments, one end of the rotating shaft is fixed to one of the handle and the hook, the limiting member is provided on the other of the handle and the hook, and the first groove extends along the circumferential direction of the rotating shaft.

[0014] In some embodiments, a second groove is further formed on the outer peripheral surface of the rotating shaft, the second groove extends along the circumferential direction of the rotating shaft, and the second groove is provided on one side of the first groove away from the rotating shaft; in the rotating state, the limiting member is inserted into the second groove.

[0015] In some embodiments, the anterior cervical hook includes:

[0016] A first reset member, the first reset member is connected to the limiting member, and the first reset member is used to apply a restoring force to the limiting member along a direction perpendicular to the second direction and away from the rotating shaft.

[0017] A moving member, the moving member abuts against one end of the limiting member, and the moving member is movable to switch between a first position and a second position.

[0018] In the first position, in a direction perpendicular to the second direction, the distance between the outer side wall of the moving member and the notch of the first groove is smaller than the size of the limiting member, so that the other end of the limiting member can be inserted into the first groove.

[0019] In the second position, in a direction perpendicular to the second direction, the distance between the outer side wall of the moving member and the notch of the first groove is larger than the size of the limiting member, so that the other end of the limiting member is separated from the first groove under the action of the first reset member.

[0020] In some embodiments, the moving member includes a cylindrical member, and the outer diameter of one end of the cylindrical member is greater than the outer diameter of the other end of the cylindrical member;

[0021] In the first position, the circumferential side wall of one end of the cylindrical member abuts against the limiting member, and the distance between the circumferential side wall of one end of the cylindrical member and the notch of the first groove is less than the size of the limiting member;

[0022] In the second position, the circumferential side wall of the other end of the cylindrical member abuts against the limiting member, and the distance between the circumferential side wall of the other end of the cylindrical member and the notch of the first groove is greater than the size of the limiting member;

[0023] Or / and, the anterior cervical retractor further includes a second reset member, and the second reset member is configured to apply a restoring force for moving the moving member from the second position to the first position.

[0024] In some embodiments, the connecting end has a first ratchet member, the other end of the connecting portion has a second ratchet member, the first ratchet member and the second ratchet member are oppositely arranged in the second direction, and both the first ratchet member and the second ratchet member extend around the rotating shaft;

[0025] In the fixed state, the first ratchet member and the second ratchet member are engaged to fix the relative rotational position of the retractor and the handle;

[0026] In the rotating state, the first ratchet member and the second ratchet member are separated from each other so that the retractor is rotatable relative to the handle.

[0027] In some embodiments, the hook head includes a flat member and / or an arc member.

[0028] In some embodiments, the hook head includes a flat member, and the cross-section of the flat member perpendicular to the second direction includes a first side edge and a second side edge. The first side edge is connected to one end of the connecting portion, the second side edge is opposite to the first side edge in the direction perpendicular to the second direction, and the size of the first side edge is smaller than the size of the second side edge.

[0029] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0030] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0031] Figure 1Schematic diagram of the structure of the anterior cervical retractor according to an embodiment of the present utility model;

[0032] Figure 2 Exploded view of the anterior cervical retractor according to an embodiment of the present utility model;

[0033] Figure 3 Partial schematic diagram of the structure of the anterior cervical retractor according to an embodiment of the present utility model;

[0034] Figure 4 Schematic diagram of the structure when the limiting member and the first groove cooperate in an embodiment of the present utility model;

[0035] Figure 5 Schematic diagram of the structure of the retractor according to an embodiment of the present utility model;

[0036] Figure 6 For Figure 5 Cross-sectional view of the hook head of the retractor in [reference] perpendicular to the second direction;

[0037] Figure 7 Schematic diagram of the structure of the retractor according to another embodiment of the present utility model;

[0038] Figure 8 For Figure 7 Cross-sectional view of the hook head of the retractor in [reference] perpendicular to the second direction;

[0039] Figure 9 Cross-sectional view of the hook head of the present utility model in a certain embodiment perpendicular to the second direction;

[0040] Figure 10 Cross-sectional view of the hook head of the present utility model in another embodiment perpendicular to the second direction;

[0041] Figure 11 Cross-sectional view of the hook head of the present utility model in yet another embodiment perpendicular to the second direction;

[0042] Figure 12 Cross-sectional view of the hook head of the present utility model in yet another embodiment perpendicular to the second direction.

[0043] Reference numerals:

[0044] Anterior cervical retractor 100;

[0045] Handle 10;

[0046] Grip end 101; Connection end 102; First ratchet member 103;

[0047] Retractor 20;

[0048] Connection portion 201; First portion 2011; Second portion 2012; Hook head 202;

[0049] Second ratchet member 203; flat member 204; arc member 205; first side edge 2021;

[0050] Second side edge 2022; third side edge 2023; fourth side edge 2024;

[0051] First edge 2025; second edge 2026;

[0052] Rotating shaft 30;

[0053] First groove 301; second groove 302;

[0054] Limiting member 40; first reset member 50; moving member 60; cylindrical member 601;

[0055] Second reset member 70;

[0056] Rotation axis L; first direction F1; second direction F2; third direction F3; fourth direction F4. Detailed implementation manners

[0057] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0058] Unless otherwise defined, all technical and scientific terms used in the present utility model have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present utility model belongs; the terms used in the description of the present utility model in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model; the terms "including" and "having" and any variations thereof in the description and claims of the present utility model and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present utility model or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0059] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "attachment" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0060] In the present utility model, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present utility model generally represents an "or" relationship between the front and rear associated objects.

[0061] In the embodiments of the present utility model, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present utility model shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only illustrative descriptions and should not constitute any limitation to the present utility model.

[0062] The term "a plurality of" appearing in the present utility model refers to two or more (including two).

[0063] The following will describe the anterior cervical retractor 100 of the present utility model in conjunction with Figures 1 to 12 to describe the anterior cervical retractor 100 of the present utility model.

[0064] As Figures 1 to 2 shown, the anterior cervical retractor 100 according to an embodiment of the present utility model includes a handle 10 and a retractor hook 20. The handle 10 has a grasping end 101 and a connecting end 102, and the grasping end 101 and the connecting end 102 are arranged at intervals along a first direction F1; the retractor hook 20 includes a connecting portion 201 and a hook head portion 202. One end of the connecting portion 201 is connected to the hook head portion 202, and the hook head portion 202 faces the side perpendicular to the second direction F2 of the connecting portion 201. The other end of the connecting portion 201 is rotatably connected to the connecting end 102 through a rotating shaft 30, and the rotation axis L of the rotating shaft 30 extends along the second direction F2, and the first direction F1 and the second direction F2 are perpendicular to each other.

[0065] Specifically, the handle 10 has a grasping end 101 and a connecting end 102. During use, the surgeon can grasp the handle 10 through the grasping end 101. The grasping end 101 and the connecting end 102 are arranged at intervals along the first direction F1. For example, the grasping end 101 and the connecting end 102 can be oppositely arranged along the first direction F1, and the connecting end 102 is used to connect to the retractor hook 20.

[0066] The retractor 20 includes a connecting portion 201 and a hook head portion 202. One end of the connecting portion 201 is connected to the hook head portion 202. The hook head portion 202 faces the side of the connecting portion 201 perpendicular to the second direction F2. During use, one end of the connecting portion 201 extends into the surgical incision so that the hook head portion 202 can contact the bone. By moving the handle 10, the hook head portion 202 and the connecting portion 201 can pull the trachea and esophagus to expose the surgical field. At the same time, the hook head portion 202 and the connecting portion 201 can protect many tissues such as the trachea and esophagus on one side thereof to reduce the possibility of damage to the tissues on the side of the hook head portion 202 by the instruments during the operation.

[0067] Reference may be made to Figure 1 As shown, the other end of the connecting portion 201 is rotatably connected to the connecting end 102 through a rotating shaft 30. The rotation axis L of the rotating shaft 30 extends along the second direction F2. The first direction F1 and the second direction F2 are perpendicular to each other.

[0068] That is to say, the relative angle between the retractor 20 and the handle 10 can be adjusted. When the position of the handle 10 remains unchanged, the retractor 20 can be in different positions in the horizontal plane perpendicular to the second direction F2. In this way, the surgeon can, in the same grasping posture, adjust the relative angle between the retractor 20 and the handle 10 to achieve pulling at different positions and angles of the surgical incision to meet different surgical field requirements. At the same time, the surgeon can also perform the surgical operation in the most comfortable and habitual posture as much as possible, increasing the convenience of use of the anterior cervical retractor 100.

[0069] The utility model is applicable to the anterior cervical spine surgery of conventional segments. At the same time, since the relative angle between the retractor 20 and the handle 10 can be adjusted, it can also be well applicable to the anterior cervical spine surgery of non-conventional segments. For example, when the position of the surgical incision remains unchanged, the anterior cervical retractor 100 of the utility model can more conveniently pull the tissue towards the direction close to the tongue or towards the direction close to the chest cavity to expose the surgical field at the non-conventional segment, and at the same time, better pulling protection of the tissue can also be achieved.

[0070] The anterior cervical retractor 100 according to an embodiment of the present utility model, by providing the retractor 20 with a hook head 202, the retractor 20 with the hook head 202 can better retract and protect tissues such as the trachea and esophagus, so as to expose the surgical field as large as possible, and at the same time, it can also reduce the possibility of damaging tissues such as the trachea and esophagus during the operation; by making the other end of the connecting portion 201 rotatably connected to the connecting end 102 along the second direction F2, that is, the relative angle between the handle 10 and the retractor 20 can be adjusted, so that by adjusting the relative angle between the retractor 20 and the handle 10, the retraction of different positions and different directions of the surgical incision can be realized, and at the same time, the surgeon can also perform the surgical operation in the most comfortable and habitual posture as much as possible, increasing the convenience of use of the anterior cervical retractor 100.

[0071] According to some embodiments of the present utility model, the retractor 20 includes a fixed state and a rotating state, and the retractor 20 can move along the second direction F2 to switch between the fixed state and the rotating state; as Figure 1 shown, in the fixed state, the other end of the connecting portion 201 and the connecting end 102 abut against each other in the second direction F2 to fix the relative positions of the retractor 20 and the handle 10; as Figure 3 shown, in the rotating state, the other end of the connecting portion 201 and the connecting end 102 are spaced apart in the second direction F2, so that the retractor 20 can rotate relative to the handle 10.

[0072] That is to say, by moving the retractor 20 or the handle 10, the retractor 20 and the handle 10 can be made to abut or be spaced apart, so that the rotational position of the retractor 20 relative to the handle 10 can be fixed, or the retractor 20 can rotate relative to the handle 10.

[0073] In this way, the rotation angle of the retractor 20 relative to the handle 10 is more flexible, and stepless adjustment of multiple angles or even 360° can be achieved, which can better meet the use requirements.

[0074] For example, the rotating shaft 30 includes a bolt and a nut, the bolt and the nut are threadedly connected, the bolt passes through the connecting end 102 and the other end of the connecting portion 201. When the bolt and the nut are loosened, the retractor 20 can rotate relative to the handle 10. When the bolt and the nut are tightened, the relative rotation angle between the retractor 20 and the handle 10 is fixed, and the structure is simple.

[0075] According to some embodiments of the present utility model, reference can be made to Figures 2 to 4, a first groove 301 is formed on the outer peripheral surface of the rotating shaft 30, and the anterior cervical retractor 100 further includes a limiting member 40; in the fixed state, the limiting member 40 is inserted into the first groove 301 so that the other end of the connecting portion 201 and the connecting end 102 are abutted in the second direction F2; in the rotating state, the limiting member 40 is separated from the first groove 301 so that the other end of the connecting portion 201 and the connecting end 102 can be spaced apart in the second direction F2.

[0076] In an embodiment where both the handle 10 and the retractor 20 are rotatably connected to the rotating shaft 30, only one first groove 301 may be provided, and the circumferential side wall of the first groove 301 cooperates with the outer peripheral wall of the limiting member 40; alternatively, the first groove 301 may also surround the circumferential side wall of the rotating shaft 30; or, a plurality of first grooves 301 may be provided, and the circumferential side walls of the plurality of first grooves 301 may all cooperate with the outer peripheral wall of the limiting member 40.

[0077] The limiting member 40 may be provided on the handle 10, or the limiting member 40 may also be provided on the retractor 20, or the limiting member 40 may neither be provided on the handle 10 nor on the retractor 20. When the limiting member 40 is inserted into the first groove 301, one of the handle 10 and the retractor 20 abuts against the limiting member 40, or the limiting member 40 is pre-fixed to the handle 10 or the retractor 20, so that the other end of the connecting portion 201 and the connecting end 102 can be abutted in the second direction F2, fixing the relative position of the handle 10 and the retractor 20 in the axial direction, so that the retractor 20 cannot rotate relative to the handle 10.

[0078] When the limiting member 40 is separated from the first groove 301, the handle 10 or the retractor 20 can be moved so that the handle 10 and the retractor 20 are spaced apart, facilitating the adjustment of the relative angle between the retractor 20 and the handle 10.

[0079] By providing the cooperation between the limiting member 40 and the first groove 301, the retractor 20 and the handle 10 can be abutted and fixed. When the limiting member 40 is separated from the first groove 301, the retractor 20 and the handle 10 can be separated to facilitate the relative rotation of the retractor 20 and the handle 10. Directly driving the movement of the limiting member 40 can achieve the fixing and separation of the retractor 20 and the handle 10, with fast operation speed and good operation convenience.

[0080] According to some embodiments of the present invention, reference may be made to Figure 4 , one end of the rotating shaft 30 is fixed to one of the handle 10 and the retractor 20, the limiting member 40 is provided on the other of the handle 10 and the retractor 20, and the first groove 301 extends along the circumferential direction of the rotating shaft 30.

[0081] Specifically, one end of the rotating shaft 30 is fixed to one of the handle 10 and the hook 20. In this way, the number of components can be reduced, and the assembly speed of the anterior cervical retractor 100 can be increased. The limiting member 40 is provided on the other of the handle 10 and the hook 20. For example, the handle 10 or the hook 20 has a receiving cavity, and the limiting member 40 is provided in the receiving cavity. In this way, the limiting member 40 can be slidably provided on the handle 10 or the hook 20. When in use, there is no need to assemble the limiting member 40 and the handle 10, or there is no need to assemble the limiting member 40 and the hook 20, which can improve the convenience of use.

[0082] The first groove 301 extends along the circumferential direction of the rotating shaft 30. For example, the first groove 301 is arc-shaped, and the arc-shaped first groove 301 extends along the circumferential direction of the rotating shaft 30, or the first groove 301 is annular, and the annular first groove 301 extends along the circumferential direction of the rotating shaft 30, so that the relative rotation angle between the hook 20 and the handle 10 can be adjusted steplessly.

[0083] According to some embodiments of the present invention, a second groove 302 is further formed on the outer peripheral surface of the rotating shaft 30. The second groove 302 extends along the circumferential direction of the rotating shaft 30, and the second groove 302 is provided on one side of the end of the first groove 301 away from the rotating shaft 30; in the rotating state, the limiting member 40 is inserted into the second groove 302.

[0084] The second groove 302 extends along the circumferential direction of the rotating shaft 30. For example, the second groove 302 is arc-shaped, and the arc-shaped second groove 302 extends along the circumferential direction of the rotating shaft 30; or the second groove 302 is annular, and the annular second groove 302 extends along the circumferential direction of the rotating shaft 30, so that the rotation angle between the hook 20 and the handle 10 can be adjusted steplessly by 360 degrees.

[0085] In the embodiment where one end of the rotating shaft 30 is fixed to one of the handle 10 and the hook 20, and the second groove 302 is provided on one side of the end of the first groove 301 away from the rotating shaft 30, in the rotating state, the limiting member 40 is inserted into the second groove 302, so that the limiting member 40 can limit the relative axial position of the hook 20 and the handle 10, and prevent the other of the handle 10 and the hook 20 from separating from the rotating shaft 30. When rotating the hook 20, there is no need to manually fix the relative axial position of the hook 20 and the handle 10, and the operation is more convenient.

[0086] In some other embodiments, a stopper is connected to one end of the rotating shaft 30. The stopper is disposed on the side of the handle 10 away from the hook 20 in the second direction F2 to prevent the handle 10 from detaching from the rotating shaft 30 in the direction away from the hook 20. In some other embodiments, a stopper is connected to one end of the rotating shaft 30. The stopper is disposed on the side of the hook 20 away from the handle 10 in the second direction F2 to prevent the hook 20 from detaching from the rotating shaft 30 in the direction away from the handle 10. The stopper and the limiting member 40 cooperate to prevent the handle 10 and the hook 20 from detaching from the rotating shaft 30. When rotating the hook 20, there is no need to manually fix the relative positions of the hook 20 and the handle 10, making the operation more convenient.

[0087] According to some embodiments of the present invention, reference may be made to Figure 4 As shown, the anterior cervical retractor 100 includes a first restoring member 50 and a moving member 60. The first restoring member 50 is connected to the limiting member 40. The first restoring member 50 is configured to apply a restoring force to the limiting member 40 along a direction perpendicular to the second direction F2 and away from the rotating shaft 30. For example, the first restoring member 50 is a first spring member. The first spring member is sleeved outside the limiting member 40. A limiting protrusion is provided on the outer peripheral surface of the limiting member 40. The limiting protrusion contacts or abuts against one end of the first spring member. The other end of the first restoring member 50 and the limiting member 40 are both disposed on one of the hook 20 and the handle 10.

[0088] The moving member 60 abuts against one end of the limiting member 40. The moving member 60 is movable to switch between a first position and a second position. In the first position, in a direction perpendicular to the second direction F2, the distance between the outer sidewall of the moving member 60 and the notch of the first groove 301 is less than the size of the limiting member 40, so that the other end of the limiting member 40 can be inserted into the first groove 301. In the second position, in a direction perpendicular to the second direction F2, the distance between the outer sidewall of the moving member 60 and the notch of the first groove 301 is greater than the size of the limiting member 40, so that the other end of the limiting member 40 is separated from the first groove 301 under the action of the first restoring member 50.

[0089] The working process of the anterior cervical retractor 100 in this embodiment is as follows: When the moving member 60 moves from the first position to the second position, in a direction perpendicular to the second direction F2, the distance between the moving member 60 and the notch of the first groove 301 gradually increases. At the same time, under the action of the restoring force applied by the first restoring member 50 to the limiting member 40, the limiting member 40 moves in a direction perpendicular to the second direction F2 and away from the rotating shaft 30, and the limiting member 40 gradually detaches from the first groove 301. After detachment, the handle 10 and the hook 20 can move away from each other in the second direction F2. Then, the moving member 60 is moved from the second position to the first position, and the limiting member 40 can enter the second groove 302 and be inserted into the second groove 302.

[0090] After the relative rotation angle between the retractor hook 20 and the handle 10 is adjusted, the moving member 60 can be moved from the first position to the second position, and the retractor hook 20 and the handle 10 are moved closer to each other in the second direction F2, so that the limiting member 40 is opposite to the second groove 302 in a direction perpendicular to the second direction F2. When the moving member 60 is moved from the second position to the first position again, in a direction perpendicular to the second direction F2, the distance between the moving member 60 and the notch of the first groove 301 gradually decreases, and the moving member 60 gradually presses the limiting member 40, so that the limiting member 40 can be reinserted into the first groove 301.

[0091] At the same time, the retractor hook 20 and the handle 10 can also be quickly assembled and disassembled, which is convenient for the surgeon to replace different forms of retractor hooks 20, has a wider adaptation range, and can provide a clearer surgical field of view for the surgeon.

[0092] According to some embodiments of the present invention, reference may be made to Figure 4 , the moving member 60 includes a cylindrical member 601, and the outer diameter of one end of the cylindrical member 601 is greater than the outer diameter of the other end of the cylindrical member 601; in the first position, the circumferential side wall of one end of the cylindrical member 601 abuts against the limiting member 40, and the distance between the circumferential side wall of one end of the cylindrical member 601 and the notch of the first groove 301 is less than the size of the limiting member 40; in the second position, the circumferential side wall of the other end of the cylindrical member 601 abuts against the limiting member 40, and the distance between the circumferential side wall of the other end of the cylindrical member 601 and the notch of the first groove 301 is greater than the size of the limiting member 40.

[0093] By setting the moving member 60 as the cylindrical member 601 with different outer diameters, when the moving member 60 is moved, since the contact position between the limiting member 40 and the moving member 60 is different, the limiting member 40 is pushed to move towards the rotating shaft 30 in a direction perpendicular to the second direction F2. At the same time, the moving member 60 is also convenient for processing and has a low processing difficulty.

[0094] According to some embodiments of the present invention, reference may be made to Figure 4 , the anterior cervical retractor 100 further includes a second reset member 70, and the second reset member 70 is used to apply a restoring force for moving the moving member 60 from the second position to the first position.

[0095] For example, the second reset member 70 can be a second spring member. By setting the second reset member 70, the moving member 60 can be automatically reset from the second position to the first position, so that the limiting member 40 can be kept inserted into the first groove 301 or the second groove 302, which is more convenient to use.

[0096] According to some embodiments of the present invention, reference may be made to Figure 3, the connecting end 102 has a first ratchet member 103, and the other end of the connecting portion 201 has a second ratchet member 203. The first ratchet member 103 and the second ratchet member 203 are oppositely arranged in the second direction F2, and both the first ratchet member 103 and the second ratchet member 203 extend around the rotating shaft 30; so that when the handle 10 and the hook 20 are relatively rotated to multiple positions in the circumferential direction, the first ratchet member 103 and the second ratchet member 203 can be engaged with each other. For example, the first ratchet member 103 and the second ratchet member 203 can both be arc-shaped as a whole, or the first ratchet member 103 and the second ratchet member 203 can both be annular as a whole.

[0097] In the fixed state, the first ratchet member 103 and the second ratchet member 203 are engaged to fix the relative rotation position of the hook 20 and the handle 10; in the rotating state, the first ratchet member 103 and the second ratchet member 203 are separated from each other, so that the hook 20 can rotate relative to the handle 10.

[0098] Compared with fixing the relative rotation position between the hook 20 and the handle 10 by the frictional force between the hook 20 and the handle 10, in this embodiment, by providing the first ratchet member 103 and the second ratchet member 203, the relative rotation position of the hook 20 and the handle 10 is fixed by the engagement between the first ratchet member 103 and the second ratchet member 203. In this way, the fixing effect is better, and it is less likely that an uncontrollable rotation problem occurs between the hook 20 and the handle 10.

[0099] According to some embodiments of the present invention, reference can be made to Figure 1 , Figure 2 , Figures 5 to 12 As shown, the hook head 202 includes a flat plate member 204 and / or an arc-shaped member 205.

[0100] That is to say, the hook head 202 can only include the flat plate member 204, or the hook head 202 can only include the arc-shaped member 205, or the hook head 202 includes a connected flat plate member 204 and an arc-shaped member 205.

[0101] When the hook head 202 is an arc-shaped member 205, the depth that the hook head 202 can reach is deeper; when the hook head 202 is a flat plate member 204, the protection effect of the hook 20 on the tissue is better, and the tissue is not easily moved to the other side in the direction towards the hook head 202.

[0102] According to some embodiments of the present invention, reference can be made to Figures 5 to 12As shown, the hook head 202 includes a flat plate member 204. The cross-section of the flat plate member 204 perpendicular to the second direction F2 includes a first side edge 2021 and a second side edge 2022. One end of the first side edge 2021 is connected to one end of the connecting portion 201. The second side edge 2022 is opposite to the first side edge 2021 in a direction perpendicular to the second direction F2. The size of the first side edge 2021 is smaller than the size of the second side edge 2022.

[0103] For example, the first side edge 2021 and the second side edge 2022 are opposite to each other along the third direction F3. The fourth direction F4, the third direction F3, and the second direction F2 are perpendicular to each other in pairs. The size of the first side edge 2021 is smaller than the size of the second side edge 2022. For example, in the direction on one side close to the fourth direction F4, one end of the second side edge 2022 exceeds one end of the first side edge 2021. In this way, when using the retractor 20, the hook head 202 can more conveniently retract the tissue to one side in the fourth direction F4, so as to obtain a wider surgical field of view at a deeper position, and at the same time, there is no need to increase the size of the surgical opening, increasing the convenience of using the retractor 20.

[0104] Specifically, the first side edge 2021 and the second side edge 2022 can be parallel to each other (as shown in Figure 6 and Figure 8 ), or the first side edge 2021 and the second side edge 2022 can also be arranged at a set angle (as shown in Figures 9 to 11 ).

[0105] In some embodiments, the cross-section of the flat plate member 204 perpendicular to the second direction F2 includes a third side edge 2023 and a fourth side edge 2024, and the third side edge 2023 and the fourth side edge 2024 are arranged at a set angle (as shown in Figures 9 to 11 ). In some embodiments, as shown in Figure 6 and Figure 8 , one of the third side edge 2023 and the fourth side edge 2024 includes a first edge 2025 and a second edge 2026. The first edge 2025 is close to the first side edge 2021, the second edge 2026 is close to the second side edge 2022. The first edge 2025 is parallel to the other of the third side edge 2023 and the fourth side edge 2024, and the second edge 2026 is arranged at a set angle with the other of the third side edge 2023 and the fourth side edge 2024.

[0106] The design of the hook head 202 with various different shapes enables the anterior cervical retractor 100 to be applicable to different surgical scenarios, improving the retraction effect, saving surgical time, and can improve surgical efficiency and safety.

[0107] In some embodiments, the first side edge 2021 and the second side edge 2022 are opposite to each other in the third direction F3, and the dimension of the hook head 202 in the fourth direction F4 is 3-4 cm. The fourth direction F4, the third direction F3, and the second direction F2 are perpendicular to each other pairwise, so that the dimension of the hook head 202 in the fourth direction F4 is wide enough to better pull and protect tissues such as the trachea and esophagus.

[0108] In other embodiments, as Figure 12 shown, the hook head 202 includes a flat plate member 204, and the cross-section of the flat plate member 204 perpendicular to the second direction F2 may be rectangular. Alternatively, the edge of the cross-section of the flat plate member 204 perpendicular to the second direction F2 may also include an arc, or the cross-section of the flat plate member 204 perpendicular to the second direction F2 may also be polygonal. All of these should be within the protection scope of this application.

[0109] According to some embodiments of the present invention, the connecting portion 201 includes a first portion 2011 and a second portion 2012. One end of the first portion 2011 is connected to the rotating shaft 30, and both ends of the second portion 2012 are respectively connected to the other end of the first portion 2011 and the hook head 202. The first portion 2011 and the second portion 2012 are arranged at a set angle, and the first portion 2011 and the hook head 202 are located on the same side of the second portion 2012. In this way, it is convenient to connect the retractor 20 and the handle 10, and the quality of the retractor 20 will not be increased too much, so that the weight of the anterior cervical retractor 100 of the present invention will not be too heavy.

[0110] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0111] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An anterior cervical retractor, characterized in that, Comprising: A handle (10), the handle (10) having a gripping end (101) and a connecting end (102), the gripping end (101) and the connecting end (102) being spaced apart along a first direction (F1); A hook (20), the hook (20) including a connecting portion (201) and a hook head portion (202), one end of the connecting portion (201) being connected to the hook head portion (202), the other end of the connecting portion (201) being rotatably connected to the connecting end (102) through a rotating shaft (30), the axis of rotation (L) of the rotating shaft (30) extending along a second direction (F2), the hook head portion (202) facing one side of the connecting portion (201) perpendicular to the second direction (F2), the first direction (F1) and the second direction (F2) being perpendicular to each other.

2. The anterior cervical retractor according to claim 1, wherein The hook (20) includes a fixed state and a rotating state, and the hook (20) is movable along the second direction (F2) to switch between the fixed state and the rotating state; In the fixed state, the other end of the connecting portion (201) and the connecting end (102) abut against each other in the second direction (F2) to fix the relative positions of the hook (20) and the handle (10); In the rotating state, the other end of the connecting portion (201) and the connecting end (102) are spaced apart in the second direction (F2) to enable the hook (20) to rotate relative to the handle (10).

3. The anterior cervical retractor according to claim 2, characterized in that, A first groove (301) is formed on the outer peripheral surface of the rotating shaft (30), and the anterior cervical retractor (100) further includes a limiting member (40); In the fixed state, the limiting member (40) is inserted into the first groove (301) so that the other end of the connecting portion (201) and the connecting end (102) abut against each other in the second direction (F2); In the rotating state, the limiting member (40) is separated from the first groove (301) so that the other end of the connecting portion (201) and the connecting end (102) can be spaced apart in the second direction (F2).

4. The anterior cervical retractor according to claim 3, wherein, One end of the rotating shaft (30) is fixed to one of the handle (10) and the hook (20), the limiting member (40) is provided on the other of the handle (10) and the hook (20), and the first groove (301) extends along the circumferential direction of the rotating shaft (30).

5. The anterior cervical retractor according to claim 4, wherein A second groove (302) is further formed on the outer peripheral surface of the rotating shaft (30), the second groove (302) extends along the circumferential direction of the rotating shaft (30), and the second groove (302) is provided on one side of the first groove (301) away from one end of the rotating shaft (30); in the rotating state, the limiting member (40) is inserted into the second groove (302).

6. The anterior cervical retractor according to claim 3, wherein Comprising: A first restoring member (50), the first restoring member (50) being connected to the limiting member (40), the first restoring member (50) being configured to apply a restoring force to the limiting member (40) along a direction perpendicular to the second direction (F2) and away from the rotating shaft (30); A moving member (60) is in contact with one end of the limiting member (40), and the moving member (60) is movable to switch between a first position and a second position; In the first position, in a direction perpendicular to the second direction (F2), the distance between the outer side wall of the moving member (60) and the notch of the first groove (301) is less than the size of the limiting member (40), so that the other end of the limiting member (40) can be inserted into the first groove (301); In the second position, in a direction perpendicular to the second direction (F2), the distance between the outer side wall of the moving member (60) and the notch of the first groove (301) is greater than the size of the limiting member (40), so that the other end of the limiting member (40) is separated from the first groove (301) under the action of the first restoring member (50).

7. The anterior cervical retractor according to claim 6, wherein, The moving member (60) includes a cylindrical member (601), and the outer diameter of one end of the cylindrical member (601) is greater than the outer diameter of the other end of the cylindrical member (601); In the first position, the circumferential side wall of one end of the cylindrical member (601) is in contact with the limiting member (40), and the distance between the circumferential side wall of one end of the cylindrical member (601) and the notch of the first groove (301) is less than the size of the limiting member (40); In the second position, the circumferential side wall of the other end of the cylindrical member (601) is in contact with the limiting member (40), and the distance between the circumferential side wall of the other end of the cylindrical member (601) and the notch of the first groove (301) is greater than the size of the limiting member (40); Or / and, the anterior cervical retractor (100) further includes a second restoring member (70), and the second restoring member (70) is configured to apply a restoring force for moving the moving member (60) from the second position to the first position.

8. The anterior cervical retractor according to claim 2, wherein The connecting end (102) has a first ratchet member (103), and the other end of the connecting portion (201) has a second ratchet member (203). The first ratchet member (103) and the second ratchet member (203) are oppositely arranged in the second direction (F2), and both the first ratchet member (103) and the second ratchet member (203) extend around the rotating shaft (30); In the fixed state, the first ratchet member (103) and the second ratchet member (203) are engaged to fix the relative rotational position of the retractor (20) and the handle (10); In the rotating state, the first ratchet member (103) and the second ratchet member (203) are separated from each other, so that the retractor (20) is rotatable relative to the handle (10).

9. The anterior cervical retractor according to any one of claims 1-8, characterized in that, The hook head (202) includes a flat member (204) and / or an arc-shaped member (205).

10. The anterior cervical retractor according to claim 9, characterized in that, The hook head portion (202) includes a flat plate member (204). The cross-section of the flat plate member (204) perpendicular to the second direction (F2) includes a first side edge (2021) and a second side edge (2022). One end of the first side edge (2021) is connected to the connecting portion (201). The second side edge (2022) is opposite to the first side edge (2021) in a direction perpendicular to the second direction (F2). The size of the first side edge (2021) is smaller than the size of the second side edge (2022).

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