CN114391902A - An expandable channel for minimally invasive spine surgery - Google Patents

Abstract

The invention discloses an expandable channel for spinal minimally invasive surgery, which relates to the technical field of medical auxiliary instruments, and the specific scheme is as follows: the expansion channel comprises a first expansion plate and a second expansion plate, wherein the first expansion plate and the second expansion plate are both arc-shaped plates, and the first expansion plate is clasped with the second expansion plate to form an expansion channel; the outer side wall of the first expansion plate is rotatably provided with a bolt limiting device, the outer side wall of the second expansion plate is rotatably provided with a nut, and the first expansion plate and the second expansion plate are connected through a bolt to realize size adjustment of an expansion channel; the first expansion plate and the second expansion plate are both provided with optical fiber holes; the expandable channel for the minimally invasive spine surgery, provided by the invention, is convenient for expanding a wound in the spine surgery process and is not easy to deform; the expandable channel for the spinal minimally invasive surgery has good fixing effect and is not easy to rebound; an expandable channel for spinal minimally invasive surgery is not easy to block the sight; an expandable passage for minimally invasive spinal surgery does not cause significant trauma to tissue.

Description

An expandable channel for minimally invasive spine surgery

technical field

The invention relates to the technical field of medical auxiliary instruments, and more particularly, to an expandable channel for minimally invasive spine surgery.

Background technique

In minimally invasive spine surgery, the tissue needs to be expanded to form a surgical channel. The currently used expansion channels have the following defects: 1. At present, most channels have too long supporting arms when they are expanded, and the elastic deformation is large when they are opened; 2. When the angle is opened If the fixation is not firm, it is easy to rebound, which affects the operation; 3. After the expansion of the circular channel, the muscle can easily enter the wound and block the sight; The shape of the one-time expansion channel or the bottom of the conical closed channel is too large, and the tissue damage is relatively large.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides an expandable channel for spinal minimally invasive surgery, which can effectively solve the above technical problems.

The above-mentioned technical purpose of the present invention is achieved through the following technical solutions:

An expandable channel for spinal minimally invasive surgery, comprising a first expansion plate and a second expansion plate, wherein the first expansion plate and the second expansion plate are arc-shaped plates, and the first expansion plate hugs the second expansion plate to form an expansion channel; The outer side wall of the first expansion plate is rotatably provided with a bolt limiting device, and the outer side wall of the second expansion plate is rotated with a nut, and the first expansion plate and the second expansion plate are connected by bolts to realize the size adjustment of the expansion channel; Both the expansion plate and the second expansion plate are provided with optical fiber holes.

In the above solution, the arc-shaped plates of the first expansion plate and the second expansion plate include a rectangular part and an arc-shaped part, and then the second expansion plate is clamped in the first expansion plate, so that the first expansion plate hugs the second expansion plate The plate forms a closed channel; in the process of tightening the bolts, the second expansion plate continues to move toward the first expansion plate, so that the expansion channel becomes smaller; after the bolts are fixed, the top of the first expansion plate and the second expansion plate The two extreme distal points are fixed, and then the first expansion plate and the second expansion plate can be rotated with the fixed point as the center, so that the lower end regions of the first expansion plate and the second expansion plate are expanded again, so as to facilitate the alignment of the spine. The position of the lesion is operated; during the rotation process, the bolt limiting device and the nut are respectively rotated relative to the outer wall of the first expansion plate and the outer wall of the second expansion plate, so that the bolt can still work normally and keep the first expansion plate and the second expansion plate. The relative distance of the expansion plate; the fiber hole is used to insert the cold light source fiber head.

As a preferred solution, the first expansion plate and the second expansion plate are bolted through independent bolts, and the bolt limiting device is a limiting platform provided with a through hole.

In the above preferred solution, the bolt connection is realized by independent bolts, which is convenient for packaging.

As a preferred solution, the bolt limiting device is a cavity with one end open, the cross-sectional size of the bolt head is smaller than the opening of the cavity, and the bolt head and the bolt limiting device are movably arranged.

In the above preferred solution, the bolt head is limited to the cavity, so that the entire bolt never leaves the first expansion plate. At the same time, when the bolt is rotated to connect the second expansion plate, the bolt head can be rotated in the cavity, and the bolt connection can be realized. , the above preferred solution will not fall off, and it is also convenient for medical staff to operate with one hand.

As a preferred solution, the top of the first expansion plate is provided with a transverse plate, and the transverse plate is provided with a number of through holes, and the top of the second expansion plate is provided with a support plate near the inner side wall, and the position of the through holes is located above the support plate.

In the above preferred solution, when the lower ends of the first expansion plate and the second expansion plate need to be expanded, the support plate is pushed downward through the through hole to realize the expansion of the lower end. The way of lowering can use a special ejector rod, tweezers and other items. A bottom-up effect can also be achieved.

As a preferred solution, the through holes on the horizontal plate are threaded holes, and the first expansion plate is provided with screws matching the threaded holes.

In the above preferred solution, the action of lowering the top is realized by screws, the screws are easy to operate, and it is convenient to adjust the depth of the screws and fix them at a specific depth, thereby limiting the expansion degree of the lower ends of the first expansion plate and the second expansion plate.

As a preferred solution, the optical fiber holes on the first expansion plate are arranged on the horizontal plate, and the optical fiber holes on the second expansion plate are arranged on the support plate.

In the above preferred solution, the optical fiber holes are arranged through the horizontal plate and the support plate, and the arrangement position does not need to affect the lowering action of the screw, and the position can be arbitrarily arranged.

As a preferred solution, the thickness of the transverse plate is 0.3-0.5mm.

As a preferred solution, a connecting handle is provided on the outer side wall of the first expansion plate.

To sum up, the present invention has the following beneficial effects:

(1) A kind of expandable channel for spinal minimally invasive surgery provided by the present invention is convenient for expanding the wound during spinal surgery, and is not easily deformed;

(2) An expandable channel for minimally invasive spine surgery provided by the present invention has a good fixation effect and is not easy to rebound;

(3) An expandable channel for minimally invasive spine surgery provided by the present invention is not easy to block sight;

(4) The expandable channel for minimally invasive spine surgery provided by the present invention will not cause great damage to the tissue;

(5) The expandable channel for spinal minimally invasive surgery provided by the present invention is simple in structure, good in use effect, and has good economy and practicability.

Description of drawings

1 is a schematic structural diagram of an expandable channel for minimally invasive spine surgery according to an embodiment of the present invention;

2 is a state diagram of an expandable channel for minimally invasive spine surgery according to an embodiment of the present invention;

3 is a schematic structural diagram of different embodiments of an expandable channel for minimally invasive spine surgery according to an embodiment of the present invention;

4 is a top view of an expandable channel for minimally invasive spine surgery according to an embodiment of the present invention;

Reference number:

1. The first expansion plate; 2. The second expansion plate; 3. The bolt limiting device; 4. The nut; 5. The optical fiber hole; 6. The horizontal plate; 7. The through hole; 10. Connection handle.

Detailed ways

The description and claims do not use the difference in name as a way to distinguish components, but use the difference in function of the components as a criterion for distinguishing. As mentioned throughout the specification and claims, "including" is an open-ended term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range, and basically achieve the technical effect.

Orientation terms such as up and down, left and right in this description and the claims are combined with the accompanying drawings for the convenience of further description, making the application more convenient to understand, and do not limit the application. Relatively speaking.

The present invention will be further described in detail below with reference to the accompanying drawings.

An expandable channel for spinal minimally invasive surgery, comprising a first expansion plate 1 and a second expansion plate 2, the first expansion plate 1 and the second expansion plate 2 are arc-shaped plates, and the first expansion plate 1 hugs the second expansion plate The plate 2 forms an expansion channel; the outer side wall of the first expansion plate 1 is rotated with a bolt limiting device 3, the outer side wall of the second expansion plate 2 is rotated with a nut 4, the first expansion plate 1 and the second expansion plate 2 The size adjustment of the expansion channel is realized by bolt connection; the first expansion plate 1 and the second expansion plate 2 are both provided with optical fiber holes 5 .

In the above embodiment, the arc-shaped plates of the first expansion plate 1 and the second expansion plate 2 include a rectangular part and an arc-shaped part, and then the second expansion plate 2 is clamped in the first expansion plate 1, so that the first expansion plate 1 is expanded. The plate 1 hugs the second expansion plate 2 to form a closed channel; in the process of tightening the bolts, the second expansion plate 2 continues to move towards the first expansion plate 1, so that the expansion channel becomes smaller; after the bolts are fixed, the first expansion plate 2 is The two extreme distal points of the top of the plate 1 and the second expansion plate 2 are fixed, and then the first expansion plate 1 and the second expansion plate 2 can be rotated with the fixed point as the center, so that the first expansion plate 1 and the second expansion plate 2 can be rotated. The lower end area of the second expansion plate 2 is expanded again, so as to facilitate the operation of the lesion in the spine; during the rotation process, the bolt limiting device 3 and the nut 4 are opposite to the outer wall of the first expansion plate 1 and the second expansion plate 2 respectively. The outer side wall is rotated so that the bolts can still work normally, and the relative distance between the first expansion plate 1 and the second expansion plate 2 is maintained; the optical fiber hole 5 is used to insert the cold light source optical fiber head.

As a preferred embodiment, the first expansion plate 1 and the second expansion plate 2 are bolted through independent bolts, and the bolt limiting device 3 is a limiting platform provided with a through hole 7 .

In the above preferred embodiment, the bolt connection is realized by independent bolts, which is convenient for packaging.

As a preferred embodiment, the bolt limiting device 3 is a cavity with one end open, the cross-sectional size of the bolt head is smaller than the opening of the cavity, and the bolt head and the bolt limiting device 3 are movably arranged.

In the above-mentioned preferred embodiment, the bolt head is limited to the cavity, so that the entire bolt never leaves the first expansion plate 1. At the same time, when the bolt is rotated to connect the second expansion plate 2, the bolt head can rotate in the cavity, so that the bolt head can be rotated in the cavity. To realize the bolt connection, the above preferred embodiment will not fall off, and at the same time, it is also convenient for medical staff to operate with one hand.

As a preferred embodiment, the top of the first expansion plate 1 is provided with a transverse plate 6, the transverse plate 6 is provided with a number of through holes 7, the top of the second expansion plate 2 is provided with a support plate 8 near the inner side wall, and the through holes 7 are located at Above the support plate 8.

In the above preferred embodiment, when the lower ends of the first expansion plate 1 and the second expansion plate 2 need to be expanded, the support plate 8 is pushed downward through the through hole 7 to realize the expansion of the lower end, and a special ejector rod can be used for the lower end. , the effect of lowering the top can also be achieved by using tweezers and other items.

As a preferred embodiment, the through holes 7 on the horizontal plate 6 are threaded holes, and the first expansion plate 1 is provided with screws 9 matching the threaded holes.

In the above preferred embodiment, the action of lowering the top is realized by the screw 9, the screw 9 is easy to operate, and at the same time it is convenient to adjust the depth of the screw 9 and fix it at a specific depth, thereby making the lower ends of the first expansion plate 1 and the second expansion plate 2. Expansion is limited.

As a preferred embodiment, the optical fiber holes 5 on the first expansion plate 1 are arranged on the horizontal plate 6 , and the optical fiber holes 5 on the second expansion plate 2 are arranged on the support plate 8 .

In the above-mentioned preferred embodiment, the optical fiber holes 5 are set through the horizontal plate 6 and the support plate 8, and the set position does not affect the lowering action of the screw 9, and the position can be set arbitrarily.

As a preferred embodiment, the thickness of the transverse plate 6 is 0.3-0.5 mm.

As a preferred embodiment, a connecting handle 10 is provided on the outer side wall of the first expansion plate 1 .

Working principle: use the first expansion plate 1 to embed the second expansion plate 2 to form a closed expansion channel, and then adjust the relative distance between the first expansion plate 1 and the second expansion plate 2 through bolts; then adjust the position of the expansion channel, After reaching the surgical operation position, fix the distal ends of the upper ends of the first expansion plate 1 and the second expansion plate 2, and screw down the screw 9 through the bolt hole of the horizontal plate 6 on the first expansion plate 1, and the screw 9 is pushed down. The support plate 8 rotates the second expansion plate 2 to adjust the expansion degree of the lower end of the expansion channel.

This specific embodiment is only an explanation of the present invention, and it does not limit the present invention. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as the rights of the present invention are used All claims are protected by patent law.

Claims (8)

1. An expandable channel for spinal minimally invasive surgery, characterized in that it comprises a first expansion plate (1) and a second expansion plate (2), wherein the first expansion plate (1) and the second expansion plate (2) are both It is an arc-shaped plate, and the first expansion plate (1) hugs the second expansion plate (2) to form an expansion channel; the outer side wall of the first expansion plate (1) is rotatably provided with a bolt limiting device (3), and the second expansion plate (2) A nut (4) is rotated on the outer side wall, and the first expansion plate (1) and the second expansion plate (2) are connected by bolts to realize the size adjustment of the expansion channel; the first expansion plate (1) and the second expansion plate (2) The expansion plates (2) are all provided with optical fiber holes (5). 2. The expandable channel for minimally invasive spine surgery according to claim 1, wherein the first expansion plate (1) and the second expansion plate (2) are bolted through independent bolts, and the bolts are limited The device (3) is a limit table provided with a through hole (7). 3. The expandable channel for minimally invasive spine surgery according to claim 1, wherein the bolt limiting device (3) is a cavity with one end open, the cross-sectional size of the bolt head is smaller than the cavity opening, and the bolt head is the same as the cavity opening. The bolt limiting device (3) is movably arranged. 4. The expandable channel for minimally invasive spine surgery according to claim 2 or 3, wherein the top of the first expansion plate (1) is provided with a transverse plate (6), and the transverse plate (6) is provided with A plurality of through holes (7) are provided, the top of the second expansion plate (2) is provided with a support plate (8) near the inner side wall, and the position of the through holes (7) is located above the support plate (8). 5. The expandable channel for minimally invasive spine surgery according to claim 4, wherein the through hole (7) on the transverse plate (6) is a threaded hole, and the first expansion plate (1) is provided with Screws (9) matching the threaded holes. 6. The expandable channel for minimally invasive spine surgery according to claim 5, characterized in that the optical fiber hole (5) on the first expansion plate (1) is provided on the transverse plate (6), and the second expansion plate (1) The optical fiber holes (5) on the plate (2) are arranged on the support plate (8). 7. The expandable channel for minimally invasive spine surgery according to claim 6, wherein the thickness of the transverse plate (6) is 0.3-0.5 mm. 8 . The expandable channel for minimally invasive spine surgery according to claim 7 , wherein a connecting handle ( 10 ) is provided on the outer side wall of the first expansion plate ( 1 ). 9 .

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