Cervical vertebra distraction device

Abstract

The utility model discloses a cervical vertebra distraction device. The cervical vertebra distraction device comprises a rod body, a supporting rod and a supporting rod, wherein the rod body extends along a first direction; the first distraction piece and the second distraction piece are arranged on the rod body, and the first distraction piece is movably arranged relative to the second distraction piece in the first direction; the first esophagus stopping piece is arranged on the first distraction piece, and the second esophagus stopping piece is arranged on the second distraction piece; and the blood vessel stopping piece is arranged on the rod body. The cervical vertebra distraction device has the advantages of being comprehensive in function, free of mutual interference between distraction of a vertebral body and traction of soft tissue and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, and in particular to a cervical vertebra distraction device. BACKGROUND

[0002] When performing anterior cervical discectomy and fusion (ACDF) intervertebral space processing, the intervertebral distraction state of the to-be-processed vertebrae needs to be maintained, and the instruments for processing the intervertebral space should not damage the soft tissues (such as esophagus and blood vessels) beside the intervertebral space during the processing.

[0003] In the related art, the to-be-processed vertebrae are distracted by a cervical vertebra distraction instrument, and the soft tissues beside the vertebrae are distracted by a soft tissue distraction instrument. The cervical vertebra distraction instrument and the soft tissue distraction instrument are independent instruments. SUMMARY

[0004] The utility model aims at at least in a certain extent solves one of the technical problems in the related art. For this reason, the utility model provides a cervical vertebra distraction device.

[0005] The cervical vertebra distraction device comprises a rod body, first and second distraction members, first and second esophageal stop members, and a blood vessel stop member. The rod body extends along a first direction. The first and second distraction members are arranged on the rod body. The first distraction member is movably arranged relative to the second distraction member along the first direction. The first esophageal stop member is arranged on the first distraction member, and the second esophageal stop member is arranged on the second distraction member. The blood vessel stop member is arranged on the rod body.

[0006] The cervical vertebra distraction device has the advantages of comprehensive functions and no interference between the distraction of the vertebrae and the distraction of the soft tissues.

[0007] Optionally, the first distraction member comprises a first mounting portion and a first sleeve. The first mounting portion is movably arranged on the rod body along the first direction and extends along a second direction. The first sleeve is arranged on the first mounting portion and extends along a third direction. The first esophageal stop member is arranged on the first sleeve. The second distraction member comprises a second mounting portion and a second sleeve. The second mounting portion is fixedly arranged on the rod body and extends along the second direction. The second sleeve is arranged on the second mounting portion and extends along the third direction. The second esophageal stop member is arranged on the second sleeve. The first, second, and third directions are perpendicular to each other.

[0008] Optionally, the first esophageal stopper is rotatably arranged in the first sleeve, an axis of rotation of the first esophageal stopper extending along the third direction, the second esophageal stopper is rotatably arranged in the second sleeve, an axis of rotation of the second esophageal stopper extending along the third direction; and / or the first esophageal stopper is movably arranged in the first sleeve along the third direction, the second esophageal stopper is movably arranged in the second sleeve along the third direction.

[0009] Optionally, the first esophageal stopper comprises a first plate portion and a first stop portion, the first plate portion is arranged in the first sleeve, the first stop portion is arranged in the first plate portion; the second esophageal stopper comprises a second plate portion and a second stop portion, the second plate portion is arranged in the second sleeve, the second stop portion is arranged in the second plate portion, wherein each of the first stop portion and the second stop portion is fan ring-shaped, each of the first stop portion and the second stop portion is located between the first plate portion and the second plate portion in the first direction.

[0010] Optionally, a length direction of the first plate portion is consistent with the third direction, a width direction of the first plate portion is consistent with the second direction, the first plate portion has a first end portion and a second end portion opposite in the second direction, the first end portion is away from the rod body relative to the second end portion in the second direction, a length direction of the first stop portion is consistent with the third direction, an end portion of the first stop portion is connected with the first end portion of the first plate portion; a length direction of the second plate portion is consistent with the third direction, a width direction of the second plate portion is consistent with the second direction, the second plate portion has a third end portion and a fourth end portion opposite in the second direction, the third end portion is away from the rod body relative to the fourth end portion in the second direction, a length direction of the second stop portion is consistent with the third direction, an end portion of the second stop portion is connected with the third end portion of the second plate portion.

[0011] Optionally, a central angle of the first stop portion is greater than or equal to 90 degrees and less than or equal to 105 degrees, a central angle of the second stop portion is greater than or equal to 90 degrees and less than or equal to 105 degrees.

[0012] Optionally, the first esophageal stopper further comprises a first assembly part provided on the first plate part, the first assembly part is sleeved on the first sleeve in a rotatable and movable manner along the third direction, and a rotation axis of the first assembly part extends along the third direction; the second esophageal stopper further comprises a second assembly part provided on the second plate part, the second assembly part is sleeved on the second sleeve in a rotatable and movable manner along the third direction, and a rotation axis of the second assembly part extends along the third direction.

[0013] Optionally, the blood vessel stopper is movably provided on the rod body along each of the first direction and the second direction.

[0014] Optionally, the blood vessel stopper comprises a mounting seat movably provided on the rod body along the first direction, a connecting part movably provided on the mounting seat along the second direction, and a blood vessel stopper part provided on the connecting part.

[0015] Optionally, the mounting seat is sleeved on the rod body, the mounting seat is provided in a threaded through hole, the blood vessel stopper further comprises a threaded fastener fitted in the threaded through hole, and the threaded fastener is capable of abutting against the rod body; or the connecting part extends along the second direction, the mounting seat has an assembly hole penetrating therethrough along the second direction, and the connecting part movably passes through the assembly hole along the second direction; or the blood vessel stopper part is flat, a length direction of the blood vessel stopper part is consistent with the third direction, and a width direction of the blood vessel stopper part is consistent with the first direction, wherein the blood vessel stopper part is located between the first esophageal stopper and the second esophageal stopper in the first direction; or the blood vessel stopper part has a flange extending from the blood vessel stopper part along the second direction towards the direction adjacent to the rod body, and the flange is detachably connected with the connecting part. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic view of a cervical vertebra distraction device according to an embodiment of the present application;

[0017] Figure 2 is a structural schematic view of a cervical vertebra distraction device according to an embodiment of the present application;

[0018] Figure 3 is a partial structural schematic view of a cervical vertebra distraction device according to an embodiment of the present application;

[0019] Figure 4 is a structural schematic view of a first esophageal stopper (second esophageal stopper) of a cervical vertebra distraction device according to an embodiment of the present application;

[0020] Figure 5 This is a schematic diagram of the structure of the blood vessel stopper of the cervical spine spreading device according to an embodiment of the present utility model. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] The cervical spine stretching device 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings. Figures 1-5 As shown, the cervical spine spreading device 100 according to an embodiment of the present utility model includes a rod body 1, a first spreading member 21, a second spreading member 22, a first esophageal stop member 3, a second esophageal stop member 4, and a blood vessel stop member 5.

[0023] The rod 1 extends along a first direction, that is, the length direction of the rod 1 is the first direction. A first expanding member 21 and a second expanding member 22 are provided on the rod 1, and the first expanding member 21 is movably provided relative to the second expanding member 22 along the first direction. A first esophageal stop member 3 is provided on the first expanding member 21, a second esophageal stop member 4 is provided on the second expanding member 22, and a blood vessel stop member 5 is provided on the rod 1.

[0024] When using the cervical spine dispersing device 100 to treat intervertebral discs, the dispersing screws are first implanted into the vertebral bodies above and below the disc to be treated. Then, the first dispersing member 21 is connected to one dispersing screw, and the second dispersing member 22 is connected to another dispersing screw, so as to disperse the vertebral bodies above and below the disc to be treated. The first esophageal stopper 3 and the second esophageal stopper 4 are used to retract and protect the esophagus, and the vascular stopper 5 is used to retract and protect the blood vessels.

[0025] According to the present invention, the cervical spine dispersing device 100 is provided with a first esophageal stop 3, a second esophageal stop 4 and a blood vessel stop 5, so that the cervical spine dispersing device 100 can not only disperse the upper and lower vertebral bodies of the intervertebral disc to be operated, but also disperse and protect the trachea and blood vessels, so as to avoid interference between the cervical spine dispersing device and the soft tissue dispersing device.

[0026] Therefore, the cervical spine spreading device 100 according to the present utility model has the advantages of comprehensive functions and that spreading the vertebral body and stretching the soft tissue do not interfere with each other.

[0027] like Figures 1-5 As shown, the cervical spine spreading device 100 according to an embodiment of the present utility model includes a rod body 1, a first spreading member 21, a second spreading member 22, a first esophageal stop member 3, a second esophageal stop member 4, and a blood vessel stop member 5.

[0028] The rod body 1 extends along a first direction, i.e. the length direction of the rod body 1 is the first direction. The first distraction member 21 and the second distraction member 22 are provided on the rod body 1, and the first distraction member 21 is movably arranged along the first direction relative to the second distraction member 22. Alternatively, the first distraction member 21 is movably arranged along the first direction on the rod body 1, and the second distraction member 22 is fixedly arranged on the rod body 1, i.e. the second distraction member 22 cannot move along the first direction relative to the rod body 1.

[0029] As shown in Figures 1-3 , the first distraction member 21 comprises a first mounting portion 211 and a first sleeve 212. The first mounting portion 211 is movably arranged along the first direction on the rod body 1, and the first mounting portion 211 extends along a second direction. The first sleeve 212 is arranged on the first mounting portion 211, the first sleeve 212 extends along a third direction, and the first esophageal stopper 3 is arranged on the first sleeve 212. Among them, the first direction, the second direction and the third direction are perpendicular to each other. The first direction is shown by arrow A in Figure 2 , the second direction is shown by arrow B in Figure 2 , and the third direction is shown by arrow C in Figure 1 .

[0030] The second distraction member 22 comprises a second mounting portion 221 and a second sleeve 222. The second mounting portion 221 is fixedly arranged on the rod body 1, and the second mounting portion 221 extends along the second direction. The second sleeve 222 is arranged on the second mounting portion 221, the second sleeve 222 extends along the third direction, and the second esophageal stopper 4 is arranged on the second sleeve 222.

[0031] In use of the cervical spine distraction device 100, first, distraction screws are implanted into the upper and lower vertebral bodies of the intervertebral disc to be operated, then the first sleeve 212 is sleeved on one distraction screw, and the second sleeve 222 is sleeved on the other distraction screw. By moving the first mounting portion 211 along the first direction (the length direction of the rod body 1), the one distraction screw can be moved along the first direction by the first sleeve 212, so as to distract the upper and lower vertebral bodies of the intervertebral disc to be operated.

[0032] The first esophageal stopper 3 is arranged on the first distraction member 21, and the second esophageal stopper 4 is arranged on the second distraction member 22. For example, the first esophageal stopper 3 is arranged on the first sleeve 212, and the second esophageal stopper 4 is arranged on the second sleeve 222.

[0033] Optionally, the first esophageal stop 3 is rotatably disposed on the first sleeve 212, with its rotation axis extending along a third direction. The second esophageal stop 4 is rotatably disposed on the second sleeve 222, with its rotation axis extending along a third direction. This allows for adjustment of the direction and position of the first and second esophageal stop 3 and 4, enabling more thorough esophageal retraction to prevent esophageal damage during surgery. Furthermore, it allows for selection of appropriate directions and positions for different patients, thereby improving the applicability and expanding the scope of use of the cervical spine retraction device 100.

[0034] Optionally, the first esophageal stop 3 is movably disposed in the first sleeve 212 along a third direction, and the second esophageal stop 4 is movably disposed in the second sleeve 222 along a third direction. This allows for adjustment of the positions of the first esophageal stop 3 and the second esophageal stop 4, thereby not only more fully retracting the esophagus to avoid esophageal damage during surgery, but also allowing for selection of appropriate positions for different patients, thus improving the applicability of the cervical spine dispersing device 100 and expanding its application range.

[0035] like Figure 1 , Figure 2 and Figure 4 As shown, the first esophageal stop 3 includes a first flat plate portion 31 and a first stop portion 32. The first flat plate portion 31 is disposed on the first sleeve 212, and the first stop portion 32 is disposed on the first flat plate portion 31. The second esophageal stop 4 includes a second flat plate portion 41 and a second stop portion 42. The second flat plate portion 41 is disposed on the second sleeve 222, and the second stop portion 42 is disposed on the second flat plate portion 41. Each of the first stop portion 32 and the second stop portion 42 is fan-shaped, and each of the first stop portion 32 and the second stop portion 42 is located between the first flat plate portion 31 and the second flat plate portion 41 in a first direction.

[0036] By providing the first flat plate portion 31 and the second flat plate portion 41, the first esophageal stop 3 can be installed on the first sleeve 212 and the second esophageal stop 4 can be installed on the second sleeve 222 more conveniently and easily. By making the first stop portion 32 and the second stop portion 42 fan-shaped, not only can the contact area between the first stop portion 32 and the second stop portion 42 and the esophagus be increased to better pull open and protect the esophagus, but the irritation of the first stop portion 32 and the second stop portion 42 to the esophagus and other soft tissues can also be effectively reduced.

[0037] In other words, the cross-section of the first stop portion 32 is a fan-shaped annulus, and the cross-section of the second stop portion 42 is a fan-shaped annulus. For example, the length direction of the first stop portion 32 is consistent with the third direction, and the cross-section of the first stop portion 32 is perpendicular to the third direction; the length direction of the second stop portion 42 is consistent with the third direction, and the cross-section of the second stop portion 42 is perpendicular to the third direction.

[0038] Optionally, the central angle of the first stop portion 32 is greater than or equal to 90 degrees and less than or equal to 105 degrees. This not only further increases the contact area between the first stop portion 32 and the esophagus, so as to better retract and protect the esophagus, but also more effectively reduces the irritation of the first stop portion 32 to the esophagus and other soft tissues. Further optionally, the central angle of the first stop portion 32 is greater than or equal to 96 degrees and less than or equal to 99 degrees. This not only further increases the contact area between the first stop portion 32 and the esophagus, so as to better retract and protect the esophagus, but also more effectively reduces the irritation of the first stop portion 32 to the esophagus and other soft tissues.

[0039] Optionally, the central angle of the second stop portion 42 is greater than or equal to 90 degrees and less than or equal to 105 degrees. This not only further increases the contact area between the second stop portion 42 and the esophagus for better retraction and protection of the esophagus, but also more effectively reduces the irritation of the second stop portion 42 to the esophagus and other soft tissues. Further optionally, the central angle of the second stop portion 42 is greater than or equal to 96 degrees and less than or equal to 99 degrees. This not only further increases the contact area between the second stop portion 42 and the esophagus for better retraction and protection of the esophagus, but also more effectively reduces the irritation of the second stop portion 42 to the esophagus and other soft tissues.

[0040] like Figure 1 and 2 As shown, the length direction of the first flat plate portion 31 is aligned with the third direction, and the width direction of the first flat plate portion 31 is aligned with the second direction. The first flat plate portion 31 has a first end 311 and a second end 312 opposite to each other in the second direction, with the first end 311 being farther away from the rod body 1 relative to the second end 312 in the second direction. The length direction of the first stop portion 32 is aligned with the third direction, and the end 321 of the first stop portion 32 is connected to the first end 311 of the first flat plate portion 31. This makes the structure of the first esophageal stop member 3 more reasonable. Moreover, by aligning the length direction of the first stop portion 32 with the third direction, the first stop portion 32 can better open the incision and block the esophagus.

[0041] The length direction of the second flat plate portion 41 is consistent with the third direction, and the width direction of the second flat plate portion 41 is consistent with the second direction. The second flat plate portion 41 has a third end portion 411 and a fourth end portion 412 opposite to each other in the second direction, and the third end portion 411 is away from the fourth end portion 412 in the second direction. The length direction of the second stop portion 42 is consistent with the third direction, and the end portion 421 of the second stop portion 42 is connected to the third end portion 411 of the second flat plate portion 41. Thus, the structure of the first esophageal stopper 3 can be more reasonable. Moreover, by making the length direction of the second stop portion 42 consistent with the third direction, the second stop portion 42 can better open the incision and stop the esophagus.

[0042] Specifically, a part of the first stop portion 32 and a part of the second stop portion 42 can stop the trachea, and another part of the first stop portion 32 and another part of the second stop portion 42 can open the incision.

[0043] As shown in Figure 1 , Figure 2 and Figure 4 , the first esophageal stopper 3 further comprises a first assembly portion 33, which is arranged on the first flat plate portion 31. The first assembly portion 33 is rotatably and movably sleeved on the first sleeve 212 along the third direction, so that the first esophageal stopper 3 is rotatably and movably arranged on the first sleeve 212 along the third direction. The rotation axis of the first assembly portion 33 (the first esophageal stopper 3) extends along the third direction. That is, the first assembly portion 33 has a first assembly hole 331 penetrating through it along the third direction, and the first sleeve 212 passes through the first assembly hole 331. Thus, the structure of the first esophageal stopper 3 can be more reasonable.

[0044] The second esophageal stopper 4 further comprises a second assembly portion 43, which is arranged on the second flat plate portion 41. The second assembly portion 43 is rotatably and movably sleeved on the second sleeve 222 along the third direction, so that the second esophageal stopper 4 is rotatably and movably arranged on the second sleeve 222 along the third direction. The rotation axis of the second assembly portion 43 (the second esophageal stopper 4) extends along the third direction. That is, the second assembly portion 43 has a second assembly hole 431 penetrating through it along the third direction, and the second sleeve 222 passes through the second assembly hole 431. Thus, the structure of the second esophageal stopper 4 can be more reasonable.

[0045] As shown in Figures 1-3 , the blood vessel stopper 5 is arranged on the rod body 1. Alternatively, the blood vessel stopper 5 is movably arranged on the rod body 1 along each of the first direction and the second direction. In other words, the blood vessel stopper 5 is movably arranged on the rod body 1 along the length direction of the rod body 1, and the blood vessel stopper 5 is movably arranged on the rod body 1 along a direction perpendicular to the length direction of the rod body 1.

[0046] Thus, the position of the blood vessel stopper 5 can be adjusted in the first direction and the second direction, so that the blood vessel can be pulled away more fully, so as to avoid damaging the blood vessel during the operation, and the appropriate position can be selected for different patients, so as to improve the applicability of the cervical spine distraction device 100 and expand the use range of the cervical spine distraction device 100.

[0047] As shown in Figures 1-3 and Figure 5 , the blood vessel stopper 5 comprises a mounting seat 51, a connecting part 52 and a blood vessel stopper 53. The mounting seat 51 is movably arranged on the rod body 1 along the first direction, the connecting part 52 is movably arranged on the mounting seat 51 along the second direction, and the blood vessel stopper 53 is arranged on the connecting part 52.

[0048] The mounting seat 51 can drive the connecting part 52 and the blood vessel stopper 53 to move along the first direction by moving the mounting seat 51 along the first direction. The connecting part 52 can drive the blood vessel stopper 53 to move along the second direction by moving the connecting part 52 along the second direction. Thus, the blood vessel stopper 53 can be moved along each of the first direction and the second direction, so that the blood vessel stopper 53 can be pulled away more fully, and the blood vessel stopper 53 can be in the appropriate position for different patients, so as to improve the applicability of the cervical spine distraction device 100 and expand the use range of the cervical spine distraction device 100.

[0049] As shown in Figures 1-3 , the mounting seat 51 is sleeved on the rod body 1, and the mounting seat 51 is arranged in the threaded through hole. The blood vessel stopper 5 further comprises a threaded fastener 54, which is fitted in the threaded through hole and can abut against the rod body 1.

[0050] When it is needed to move the mounting seat 51 along the first direction, the threaded fastener 54 can be rotated to make the threaded fastener 54 disengage from the rod body 1. When the mounting seat 51 is moved to the appropriate position, the threaded fastener 54 is reversely rotated to make the threaded fastener 54 abut against the rod body 1, so that the mounting seat 51 is stably in the appropriate position.

[0051] As shown in Figures 1-3 , the connecting part 52 extends along the second direction, the mounting seat 51 has an assembly hole 511 through which the second direction passes, and the connecting part 52 movably passes through the assembly hole 511 along the second direction. That is, a part of the connecting part 52 is fitted in the assembly hole 511, and the remaining part of the connecting part 52 extends out of the assembly hole 511. Thus, the structure of the blood vessel stopper 53 can be more reasonable.

[0052] As shown in Figure 1 , Figure 2 and Figure 5As shown in the drawings, the blood vessel stopper 53 is flat, the length direction of the blood vessel stopper 53 is consistent with the third direction, and the width direction of the blood vessel stopper 53 is consistent with the first direction. The blood vessel stopper 53 is located between the first esophageal stopper 3 and the second esophageal stopper 4 in the first direction. Thus, the structure of the cervical vertebra distraction device 100 is more reasonable.

[0053] As shown in the drawings, Figure 1 , Figure 2 and Figure 5 As shown in the drawings, the blood vessel stopper 53 has a flange 531 extending from the blood vessel stopper 53 in the second direction towards the adjacent rod body 1, and the flange 531 is detachably connected with the connecting part 52. Thus, the appropriate blood vessel stopper 53 can be conveniently replaced as needed, so that the blood vessel stopper 53 can more fully retract the blood vessels, further improving the applicability of the cervical vertebra distraction device 100 and expanding the use range of the cervical vertebra distraction device 100.

[0054] For example, the second direction can be the left-right direction, the rod body 1 is located on the left side of the blood vessel stopper 53, and the flange 531 extends leftward from the blood vessel stopper 53. The blood vessel stopper 5 can retract the blood vessels to the left side, and the first esophageal stopper 3 and the second esophageal stopper 4 can retract the trachea to the right side. The flange 531 can be connected with the connecting part 52 by screws or bolts.

[0055] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0056] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0057] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electric connection or each other can communicate; can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation. For ordinary skilled person in the art, can understand the specific meaning of above terms in the utility model according to specific circumstances.

[0058] In the utility model, unless another definite provision and limitation, first feature is "on" or "under" second feature can be that first and second features directly contact, or first and second features indirectly contact through intermediate medium. Moreover, first feature "over", "above" and "on" second feature can be that first feature is directly above or obliquely above second feature, or just indicates that the horizontal height of first feature is higher than that of second feature. First feature "under", "below" and "under" second feature can be that first feature is directly below or obliquely below second feature, or just indicates that the horizontal height of first feature is less than that of second feature.

[0059] In the utility model, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0060] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model, and those skilled in the art can change, modify, replace and modify the above embodiments within the scope of the utility model.

Claims

1. A cervical spine stretching device, characterized in that, include: A rod extending along a first direction; A first support member and a second support member are disposed on the rod body, and the first support member is movably disposed relative to the second support member along the first direction; A first esophageal stop and a second esophageal stop, wherein the first esophageal stop is disposed on the first expansion member and the second esophageal stop is disposed on the second expansion member; as well as A blood vessel stopper is disposed on the rod body.

2. The cervical spine spreading device according to claim 1, characterized in that, The first expansion member includes: A first mounting portion, movably disposed on the rod body along a first direction, and extending along a second direction; and A first sleeve is provided at the first mounting part and extends in a third direction. The first esophageal stop is provided at the first sleeve. The second expansion member includes: A second mounting portion, fixedly disposed on the rod, extending along the second direction; and The second sleeve is disposed on the second mounting portion and extends along the third direction. The second esophageal stop is disposed on the second sleeve, wherein the first direction, the second direction and the third direction are perpendicular to each other.

3. The cervical spine spreading device according to claim 2, characterized in that, The first esophageal stop is rotatably disposed on the first sleeve, and the axis of rotation of the first esophageal stop extends along the third direction; the second esophageal stop is rotatably disposed on the second sleeve, and the axis of rotation of the second esophageal stop extends along the third direction; and / or The first esophageal stop is movably disposed on the first sleeve along the third direction, and the second esophageal stop is movably disposed on the second sleeve along the third direction.

4. The cervical spine spreading device according to claim 2, characterized in that, The first esophageal stop includes a first flat plate portion and a first stop portion, wherein the first flat plate portion is disposed on the first sleeve and the first stop portion is disposed on the first flat plate portion; The second esophageal stop includes a second flat plate portion and a second stop portion. The second flat plate portion is disposed on the second sleeve, and the second stop portion is disposed on the second flat plate portion. Each of the first stop portion and the second stop portion is fan-shaped, and each of the first stop portion and the second stop portion is located between the first flat plate portion and the second flat plate portion in the first direction.

5. The cervical spine spreading device according to claim 4, characterized in that, The length direction of the first plate portion is consistent with the third direction, the width direction of the first plate portion is consistent with the second direction, the first plate portion has a first end and a second end opposite to each other in the second direction, the first end is away from the rod body relative to the second end in the second direction, the length direction of the first stop portion is consistent with the third direction, and the end of the first stop portion is connected to the first end of the first plate portion. The length direction of the second plate portion is consistent with the third direction, the width direction of the second plate portion is consistent with the second direction, the second plate portion has a third end and a fourth end opposite to each other in the second direction, the third end is away from the rod body relative to the fourth end in the second direction, the length direction of the second stop portion is consistent with the third direction, and the end of the second stop portion is connected to the third end of the second plate portion.

6. The cervical spine spreading device according to claim 4, characterized in that, The central angle of the first stop is greater than or equal to 90 degrees and less than or equal to 105 degrees, and the central angle of the second stop is greater than or equal to 90 degrees and less than or equal to 105 degrees.

7. The cervical spine spreading device according to claim 4, characterized in that, The first esophageal stop further includes a first assembly part, which is disposed on the first flat plate portion. The first assembly part is rotatably and movably sleeved on the first sleeve along the third direction, and the rotation axis of the first assembly part extends along the third direction. The second esophageal stop further includes a second assembly portion disposed on the second flat plate portion. The second assembly portion is rotatably and movably sleeved on the second sleeve along the third direction, and the rotation axis of the second assembly portion extends along the third direction.

8. The cervical spine spreading device according to claim 2, characterized in that, The blood vessel stop is movably disposed on the rod along each of the first and second directions.

9. The cervical spine spreading device according to claim 8, characterized in that, The blood vessel stopper includes: Mounting base, which is movably disposed on the rod body along the first direction; A connecting portion, movably disposed on the mounting base along the second direction; and A blood vessel stop portion is provided at the connecting portion.

10. The cervical spine spreading device according to claim 9, characterized in that, The mounting base is sleeved on the rod body and disposed in the threaded through hole. The blood vessel stop further includes a threaded fastener, which engages with the threaded through hole and can abut against the rod body; or The connecting portion extends along the second direction, and the mounting base has a mounting hole extending therethrough along the second direction, through which the connecting portion movably passes in the mounting hole along the second direction; or The vascular stop portion is flat, its length direction is consistent with the third direction, and its width direction is consistent with the first direction. The vascular stop portion is located between the first esophageal stop member and the second esophageal stop member in the first direction; or The blood vessel stop portion has a flange that extends from the blood vessel stop portion along the second direction toward the adjacent rod body, and the flange is detachably connected to the connecting portion.

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