CN112716541B

CN112716541B - Cervical vertebra anterior surgery gap retractor

Info

Publication number: CN112716541B
Application number: CN202110038678.9A
Authority: CN
Inventors: 夏燕妮; 赵华; 汤娟; 张燕; 胡晓乐
Original assignee: Qilu Hospital of Shandong University
Current assignee: Qilu Hospital of Shandong University
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2022-02-18
Anticipated expiration: 2041-01-12
Also published as: CN112716541A

Abstract

The invention relates to a cervical anterior surgery gap retractor, which comprises a plurality of retractors, wherein each retractor comprises a telescopic rod, one end of each telescopic rod is connected with a retraction rod through a joint structure, the end part of each retraction rod is of a pointed structure, each retraction rod is provided with a hollow depth ball, each depth ball comprises a lower hemispherical part fixed with the retraction rod and an upper hemispherical part in sliding connection with the retraction rod, the lower hemispherical part starts to be provided with a plurality of leak holes, the other end of each telescopic rod is in sliding connection with a guide rail, and each guide rail is fixed with a fixing part and can be fixedly connected with an operating table through the fixing part.

Description

Cervical vertebra anterior surgery gap retractor

Technical Field

The invention relates to the technical field of medical instruments, in particular to a cervical vertebra anterior operation gap retracting device.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

In the field of spinal surgery, especially anterior cervical surgery, it is often necessary to retract soft tissues such as vascular sheaths, visceral sheaths, nerves, muscles, skin, subcutaneous tissues and the like, and expose bone tissues for surgical operation. The operation part is deep, the visual field channel is narrow, the retracted tissue is fragile and easy to damage, and needs to be opened softly and the good visual field is exposed. The inventor finds that the current drag hook or spreader is manually pulled and spread, and has the disadvantages that the drag hook or spreader cannot be anchored at the spread part, is easy to slide, rub and displace, is easy to damage soft tissues, and also influences the exposure of the operation visual field; secondly, the draw hook needs the assistant to hold for a long time, and consumes manpower and physical strength. If the Kirschner wire is used for anchoring the target vertebral body, the defects are that the driving depth is difficult to control, the deep spinal cord, nerves or vertebral artery is easily damaged, the angle cannot be controlled, the view field is opened and exposed badly, shielding is possibly caused, and the Kirschner wire needs to be continuously held by an assistant for retraction.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a cervical vertebra anterior operation gap retracting device which is flexible to apply, free from causing damage to soft tissues and capable of controlling and adjusting the angle.

In order to achieve the purpose, the invention adopts the following technical scheme:

in a first aspect, an embodiment of the present invention provides a cervical spine anterior surgery gap retracting device, which includes a plurality of retractors, each retractor includes a telescopic rod, one end of each telescopic rod is connected with a retraction rod through a joint structure, an end of each retraction rod is a pointed structure, each retraction rod is provided with a hollow depth ball, each depth ball includes a lower hemispherical portion fixed to the retraction rod and an upper hemispherical portion slidably connected to the retraction rod, the lower hemispherical portion starts to have a plurality of weep holes, the other end of each telescopic rod is slidably connected to a guide rail, and each guide rail is fixed with a fixing member and can be fixedly connected to an operating table through the fixing member.

Further, the guide rail is ring type guide rail, the mounting adopts the dead lever of L type, dead lever one end and guide rail fixed connection, the other end can with operation table fixed connection.

Furthermore, the end part of the telescopic rod is provided with a sliding block, the sliding block is connected with the guide rail in a sliding manner, the sliding block is in threaded connection with a locking bolt, and the locking bolt can compress the guide rail, so that the sliding block and the guide rail are locked and fixed.

In a second aspect, an embodiment of the present invention provides a cervical spine anterior surgery gap retracting device, which includes a plurality of retractors, each retractor includes a telescopic rod, one end of each telescopic rod is connected with a retraction rod through a joint structure, the end of each retraction rod is a pointed structure, each retraction rod is provided with a hollow depth ball, each depth ball includes a lower hemispherical portion fixed to the retraction rod and an upper hemispherical portion slidably connected to the retraction rod, the lower hemispherical portion starts to have a plurality of leakage holes, the other end of each telescopic rod is provided with a plurality of limiting protrusions, fixing bands are arranged between adjacent limiting protrusions, the fixing bands are fixed to an adhesive sheet, and the adhesive sheet can be fixed to an operating table.

Furthermore, the limiting protrusion is of a spherical structure or a columnar structure.

Further, joint mechanism include with telescopic link tip fixed connection's fixed part, the fixed part is fixed with the threaded rod, rotates on the threaded rod and is connected with rotation portion and threaded connection has lock nut, lock nut can compress tightly rotation portion and fixed part fixedly, the fixed part is equipped with a plurality of recesses that radially set up along it, rotation portion is equipped with a plurality of archs that radially set up along it, the arch can be embedded in the recess, the outer peripheral face and the distraction rod fixed connection of rotation portion.

Furthermore, the distance between the bottom end of the depth-limiting ball and the end part of the pointed structure of the retraction rod is 3-5 mm.

Furthermore, last hemisphere portion is provided with the buckle seat, the buckle seat passes through the torsional spring and rotates the connection buckle, and last hemisphere portion and lower hemisphere portion can be fixed through the buckle joint.

Furthermore, the outer diameter of the depth-limiting ball is 3mm-5 mm.

Furthermore, a plurality of the leak holes are uniformly distributed on the circumference taking the axis of the draw rod as the center.

The invention has the beneficial effects that:

1. according to the retracting device, the end part of the telescopic rod can be fixed, so that an assistant does not need to hold the retracting device for a long time, and the operation labor intensity of medical personnel is reduced.

2. The retractor device can be anchored at the distraction part through the pointed structure and is provided with the depth limiting ball, the driving depth of the pointed structure of the traction rod can be controlled through the depth limiting ball, and the damage to the deep spinal cord, nerves or vertebral artery is avoided.

3. According to the retractor device, the depth-limiting ball is a hollow ball body, the tissue is slightly damaged in the driving process, the hemostatic powder can be placed in the retractor device, and the hemostatic powder can leak out through the leakage hole to permeate the hemostatic powder to a fixed position, so that the hemostatic effect is achieved.

4. According to the retractor device, the telescopic rod can be rotationally connected with the retraction rod through the joint mechanism, so that the angle control is realized, and the good operation visual field can be favorably exposed.

5. According to the retractor device, the fixed part is provided with the groove, the rotating part is provided with the bulge, and the bulge can be embedded into the groove, so that the angle between the traction rod and the telescopic rod can be accurately adjusted, and the fixed part and the rotating part are combined more firmly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a plan view of the whole structure of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the invention taken along line A of FIG. 1;

FIG. 3 is a schematic view of the invention taken along line B of FIG. 1;

FIG. 4 is a schematic view showing the arrangement of grooves in the fixing part in example 1 of the present invention;

FIG. 5 is a front view of a part of the structure of embodiment 1 of the present invention;

the novel adhesive tape comprises a guide rail 1, a metal rod 2, a hoop 3, a connecting plate 4, a telescopic rod 5, a first locking bolt 6, a sliding block 7, a fixing plate 8, a second locking bolt 9, a fixing part 10, a rotating part 11, a pulling rod 12, a threaded rod 13, a locking nut 14, a groove 15, a pointed structure 16, an upper hemispherical part 17, a lower hemispherical part 14, a leakage hole 19, a buckle seat 20, a buckle 21, a limiting bulge 22, a fixing band 23 and an adhesive sheet 24.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

For convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

As introduced by the background art, the existing drag hook or spreader is difficult to control the driving depth and easily damages the deep spinal cord, nerves or vertebral artery, the angle cannot be controlled, the spread visual field is not well exposed, and an assistant needs to continuously hold and pull out the drag hook or spreader, so that the application provides a cervical anterior surgery gap pulling device aiming at the problems.

In example 1, an exemplary embodiment of the present application, as shown in fig. 1 to 4, an anterior cervical spine surgical gap retractor includes a guide rail 1, the guide rail is a circular ring-shaped guide rail, preferably, the outer diameter of the guide rail is 30cm to 40cm, the guide rail is made of round steel, preferably, the cross-sectional diameter of the guide rail is 1 cm.

The utility model discloses a guide rail, including guide rail, mounting, staple bolt 3, staple bolt, guide rail and guide rail, the guide rail is connected with the mounting, and the guide rail can be through mounting and operation table fixed connection, and is preferred, the mounting sets up two, and two mountings set up respectively at the both ends of the same diameter line of guide rail, the mounting adopts L type metal pole 2, fixed connection can be dismantled with the guide rail to the one end of metal pole through staple bolt 3, and fixed connection can be dismantled with the operation table to the other end.

Preferably, the end of the metal rod is provided with an L-shaped connecting plate 4, the L-shaped connecting plate is provided with a threaded hole, a fixing bolt is in threaded connection with the threaded hole, the fixing plate can be fixed at the edge of the operating table through the fixing bolt and the threaded hole which is formed in the operating table in advance, and then the fixed connection of the guide rail and the operating table is realized.

It is understood that a person skilled in the art may also realize the detachable and fixed connection of the metal rod and the operating table by other means, for example, by using a magnet or inserting the metal rod into a pre-opened jack of the operating table or other means, which may be selected according to actual needs.

The guide rail is connected with a plurality of retractors in a sliding mode, the number of the retractors can be set according to actual use requirements, preferably, the number of the retractors is two, the two retractors are completely identical in structure, and one retractor is taken as an example for explanation.

The retractor comprises a telescopic rod 5, the structure of the telescopic rod adopts the structure of the existing telescopic rod, and comprises a fixed rod body and a telescopic rod body, wherein the telescopic rod body is in telescopic connection with the fixed rod body, and the fixed rod body is in threaded connection with a first locking bolt 6 for locking and fixing the fixed rod body and the telescopic rod body.

The fixed rod body end of telescopic link and slider 7 can dismantle fixed connection, and preferred, the fixed rod body end of telescopic link is equipped with fixed plate 8, and fixed plate passes through bolt and slider and can dismantle fixed connection, be equipped with the through-hole that is used for the guide rail to pass on the slider, the slider can pass through-hole and guide rail sliding connection.

The sliding block is in threaded connection with a second locking bolt, the second locking bolt 9 is rotated, the sliding block can be tightly pressed on the guide rail through the second locking bolt, and the sliding block and the guide rail are locked and fixed.

When the retractor is used, the retractor can be locked and fixed with the guide rail, an assistant does not need to hold the retractor for a long time, and the operation labor intensity of medical personnel is reduced.

Moreover, in this embodiment, the guide rail adopts ring type structure, and the telescopic motion of cooperation telescopic link can be adjusted the traction bar to the optional position of operation table, has nimble suitability.

The end part of the telescopic rod body of the telescopic rod is connected with a joint mechanism, the joint mechanism is connected with the retraction rod, and the angle between the telescopic rod and the retraction rod can be adjusted through the joint mechanism.

The joint mechanism comprises a fixing part 10 and a rotating part 11 which are of cylindrical structures, the fixing part is fixedly connected with the end part of an expansion link body of the expansion link, the retraction link 12 is fixedly connected with the outer peripheral surface of the rotating part, a threaded rod 13 is arranged at the center of the fixing part, the rotating part is sleeved on the periphery of the threaded rod and is rotatably connected with the threaded rod, a locking nut 14 is connected onto the threaded rod in a threaded manner, the rotating part can be tightly pressed on the fixing part by the locking nut, and the expansion link body and the retraction link body are locked and fixed.

Preferably, the fixed part begins to have a plurality of recesses 15 on the terminal surface of rotation portion, the radial line direction setting of fixed part is followed to the recess, rotation portion is provided with a plurality of archs on the terminal surface of fixed part, protruding with the recess phase-match, the arch can be embedded in the recess, in this embodiment, the contained angle between adjacent recess or the adjacent arch can set up according to the in-service use demand, can realize different angle regulation precision, has realized the accurate regulation of angle between traction rod and the telescopic link, is favorable to exposing good operation field of vision, can make the combination of fixed part and rotation portion more firm moreover.

Preferably, the diameter of the retraction rod is 1.5mm-2mm, one end of the retraction rod is fixedly connected with the outer peripheral surface of the rotating part, the other end of the retraction rod is provided with a pointed structure 16, the retraction rod can be driven into the bone of the front outer side edge of the cervical vertebra centrum through the pointed structure to anchor a target position, and the retraction rod is prevented from sliding.

The traction rod is provided with a depth limiting ball, the distance from the bottom end of the depth limiting ball to the end part of the pointed structure is 3-5 mm, the driving depth can be limited, deep tissue is prevented from being damaged by driving too deeply, and deep spinal cord, nerve or vertebral artery is prevented from being damaged.

The diameter of the depth-limiting ball is 3mm-5mm, preferably, the diameter of the depth-limiting ball is 4mm, so that the depth-limiting function is achieved, and the operation visual field is not influenced.

In the embodiment, the depth-limiting ball is adopted, and in the driving process of the retraction rod, the depth-limiting ball is in contact with the tissue through the spherical surface, so that the damage to the tissue is reduced to the greatest extent.

In this embodiment, the depth-limiting ball adopts a hollow ball structure, and includes an upper hemispherical portion 17 and a lower hemispherical portion 18, and the upper hemispherical portion and the lower hemispherical portion can be spliced into a complete hollow ball structure. The lower hemispherical part is fixedly connected with the retraction rod, and the upper hemispherical part is connected with the retraction rod in a sliding manner.

The lower hemispherical part is provided with a plurality of leakage holes 19, preferably, the diameter of each leakage hole is 0.5mm, in this embodiment, six leakage holes are arranged, and the six leakage holes are uniformly distributed along the circumference taking the axis of the retracting rod as the center.

Last hemisphere portion is fixed with buckle seat 20, the buckle seat is connected through pivot and buckle 21 rotation, is provided with the torsional spring between buckle and the pivot for reset the buckle, in this embodiment, the buckle adopts L type structure, and when first hemisphere portion and lower hemisphere portion laminating constitute complete spherical structure, the buckle can block lower hemisphere portion, realizes that the chucking of first hemisphere portion and lower hemisphere portion is fixed.

The retractor device of this embodiment is in the use, and with last hemisphere part and lower hemisphere part open, can put into hemostatic powder in the lower hemisphere portion, hemostatic powder can play hemostatic effect in the middle of can permeating the tissue through the small opening, has reduced the injury to the tissue.

When the retractor device of this embodiment uses, according to operation actual need, slider and the retractor of quantity are set for in the installation on the guide rail, pass through tubular metal resonator and operation table fixed connection with the guide rail, adjust the length of telescopic link and the position on the guide rail, make the position of distraction rod satisfy the operation demand, can expose good operation field of vision, squeeze into the sclerotin of cervical vertebra centrum front outer lateral margin with the point column structure of distraction rod, and utilize the restriction of depth ball to squeeze into the degree of depth, then adjust the angle of telescopic link and distraction rod, make the retractor can expose good operation field of vision, then tighten lock nut, utilize lock nut to compress tightly the portion of rotating on the re-fixing portion, make telescopic link and distraction rod locking fixed, it is fixed with slider and guide rail locking, can carry out the operation this moment.

After the operation is finished, the retractor and the sliding block can be detached, the retractor is a disposable article and can be discarded, and the guide rail and the sliding block can be used repeatedly.

Example 2:

the embodiment discloses a cervical vertebra anterior surgery gap retractor, as shown in fig. 5, the difference with embodiment 1 is that no guide rail and no slide block are provided, the end of the fixed rod body of the telescopic rod is provided with a plurality of limiting protrusions 22 along the axis direction of the telescopic rod, preferably, the number of the limiting protrusions is 3-5, the distance between adjacent limiting protrusions is 5mm, the limiting protrusions adopt spherical structures or cylindrical structures, the diameter of the spherical structures or cylindrical structures is 5mm, strip-shaped fixing bands 23 are arranged between adjacent limiting protrusions, the width of the fixing bands is 5mm, the length of the fixing bands is 15mm-20mm, a plurality of fixing bands are fixedly adhered to an adhesive sheet 24, the telescopic rod is pressed on the adhesive sheet, and the back of the adhesive sheet can be fixedly adhered to the operating table.

When the retractor device of the present embodiment is used, the adhesive patch can be attached to the set position of the operating table as needed, and the method of using the retractor is the same as that of the retractor of embodiment 1, and will not be described repeatedly.

By adopting the retractor device in the embodiment 1 or the embodiment 2, a good operation visual field can be exposed, the labor intensity of medical staff is greatly reduced, and the retractor device can be widely applied to anterior cervical spine operations or other types of operations.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.

Claims

1. A cervical spine anterior surgery gap retractor device is characterized by comprising a plurality of retractors, each retractor comprises a telescopic rod, one end of each telescopic rod is connected with a retraction rod through a joint structure, the end part of each retraction rod is of a pointed structure, each retraction rod is provided with a hollow depth ball, each depth ball comprises a lower hemispherical part fixed with each retraction rod and an upper hemispherical part in sliding connection with each retraction rod, a plurality of leak holes are formed in the lower hemispherical part, the other end of each telescopic rod is in sliding connection with a guide rail, and each guide rail is fixed with a fixing piece and can be fixedly connected with an operating table through the fixing piece;

the joint structure includes the fixed part with telescopic link tip fixed connection, the fixed part is fixed with the threaded rod, rotates on the threaded rod and is connected with rotation portion and threaded connection has lock nut, lock nut can compress tightly rotation portion and fixed part fixedly, the fixed part is equipped with a plurality of recesses that radially set up along it, rotation portion is equipped with a plurality of archs that radially set up along it, the arch can be embedded in the recess, the outer peripheral face and the distraction rod fixed connection of rotation portion.

2. The anterior cervical surgical gap retractor of claim 1, wherein the rail is a circular ring rail, and the fixing member is an L-shaped fixing rod, one end of the fixing rod is fixedly connected with the rail, and the other end of the fixing rod can be fixedly connected with the operating table.

3. The anterior cervical surgical gap retractor according to claim 1, wherein the end of the telescopic rod is provided with a slider, the slider is slidably connected with the guide rail, the slider is in threaded connection with a locking bolt, and the locking bolt can press the guide rail tightly, so that the slider is locked and fixed with the guide rail.

4. The anterior cervical surgical gap retraction device according to claim 1, wherein the distance between the bottom end of the depth stop ball and the end of the pointed structure of the retraction rod is 3mm to 5 mm.

5. The anterior cervical surgical gap retracting device according to claim 1, wherein the upper hemispherical portion is provided with a snap seat, the snap seat is rotatably connected with a snap through a torsion spring, and the upper hemispherical portion and the lower hemispherical portion can be fixed through the snap.

6. The anterior cervical surgical gap retraction device according to claim 1, wherein the depth stop ball has an outer diameter of 3mm to 5 mm.

7. The anterior cervical surgical gap retraction device according to claim 1, wherein a plurality of said orifices are evenly distributed about a circumference centered on the shaft axis.

8. A cervical spine anterior surgery gap retractor device is characterized by comprising a plurality of retractors, each retractor comprises a telescopic rod, one end of each telescopic rod is connected with a retraction rod through a joint structure, the end part of each retraction rod is of a pointed structure, each retraction rod is provided with a hollow depth ball, each depth ball comprises a lower hemispherical part fixed with each retraction rod and an upper hemispherical part in sliding connection with each retraction rod, a plurality of leakage holes are formed in the lower hemispherical part, a plurality of limiting bulges are arranged at the other end of each telescopic rod, fixing belts are arranged between the adjacent limiting bulges, the fixing belts are fixedly adhered to an adhesive sheet, and the adhesive sheet can be fixedly adhered to an operating bed;

9. The anterior cervical surgical gap retractor of claim 8 wherein the stop protrusion is in the form of a ball or a post.

10. The anterior cervical surgical gap retraction device according to claim 8, wherein the distance between the bottom end of the depth stop ball and the end of the pointed structure of the retraction rod is 3mm to 5 mm.

11. The anterior cervical surgical gap retracting device according to claim 8, wherein the upper hemispherical portion is provided with a snap seat, the snap seat is rotatably connected with a snap through a torsion spring, and the upper hemispherical portion and the lower hemispherical portion can be fixed by the snap.

12. The anterior cervical surgical gap retraction device according to claim 8, wherein the depth stop ball has an outer diameter of 3mm to 5 mm.

13. The anterior cervical surgical gap retraction device according to claim 8, wherein a plurality of said orifices are evenly distributed about a circumference centered on the shaft axis.