CN218304986U

CN218304986U - Variable-diameter spinal surgery distraction device

Info

Publication number: CN218304986U
Application number: CN202221546376.9U
Authority: CN
Inventors: 史丽; 黄西华; 雷超清
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2023-01-17
Anticipated expiration: 2032-06-20

Abstract

The utility model discloses a variable-diameter spinal surgery distraction device, which comprises a flexible base pipe, an expansion pipe and a hole closer which are connected in sequence, wherein the joint of the flexible base pipe and the expansion pipe is provided with an installation table, a connection table is bonded inside the installation table, and one end of the inner side of the installation table, which is close to the expansion pipe, is provided with a bayonet; the front end of a flexible base tube is connected with one end of the outer side of a linking table, the other end of the outer side of the linking table is bonded in an installation table, a flexible expansion strip with a circular arc-shaped cross section is sleeved in the flexible base tube, the flexible expansion strip forms a hollow circular tubular structure in the flexible base tube, one end of the flexible expansion strip is fixedly connected with the inner side of the linking table, and the other end of the flexible expansion strip extends out of the tail end of the flexible base tube; and a clamping table is arranged on the outer side of one end of the expansion pipe close to the hole closing device and is in running fit with the bayonet. The utility model provides a but reducing spine surgery distraction device can expand the spine surgery passageway through interior reaming's mode under the condition that does not harm operation wound and tissue.

Description

Variable-diameter spinal surgery distraction device

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to but reducing backbone surgery distraction device.

Background

The conventional lumbar fusion has been widely accepted by spinal surgeons as a main operation mode for treating unstable spine diseases caused by various factors such as degeneration, trauma, infection, tumor, etc., however, the conventional lumbar fusion has disadvantages of large-area soft tissue exfoliation and long-time muscle traction, which may cause aggravation of postoperative pain, prolonged recovery time, and impaired spinal function. Therefore, minimally invasive techniques that minimize soft tissue trauma while ensuring safe and effective surgical procedures are an important development in today's spinal surgery field.

At present, various forms of minimally invasive spinal distractors are available on the market. The typical types are two, one is a progressive sleeve spreader, and the other is a parallel spreader.

The step-by-step sleeve spreader utilizes a series of sleeves to sequentially penetrate and sleeve, and gradually enlarges an operation access channel. The series of cannulas has a smallest cannula which, after penetration into soft tissue, is threaded with a second cannula having an inner diameter similar to the outer diameter of the cannula and then with the next cannula, thus sequentially expanding the size of the access passage until the desired size is achieved. The expanding method has the defects that in the expanding process, the outer sleeve has wounds on tissues in the sleeving process, and can recover after being expanded, so that the channel is reduced, and the operation is influenced.

The parallel spreader is a combination of a rack, a movable seat and two drag hooks, one drag hook is connected with the rack into a whole, the other drag hook is connected with the movable seat on the rack, and the distance between the two drag hooks can be expanded by adjusting the movable seat, so that the size of the access channel of the spinal surgery can be expanded. The defect of the distraction mode is that the drag hook is difficult to penetrate soft tissues and needs to make a larger incision; and the expansion can only realize parallel expansion, and the soft tissue expansion at the lower end of the expander can not be realized, so the application in the operation is limited.

Therefore, how to reduce soft tissue injury while ensuring the safety and effectiveness of the surgical operation in minimally invasive surgery is a technical problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a but reducing backbone surgery distraction device can solve above-mentioned problem.

In order to achieve the purpose, the utility model adopts the technical proposal that: the variable-diameter spinal surgery distraction device comprises a flexible base pipe, an expansion pipe and a hole closing device which are sequentially connected, wherein an installation table is arranged at the joint of the flexible base pipe and the expansion pipe, a connection table is bonded in the installation table, and a bayonet is arranged at one end, close to the expansion pipe, of the inner side of the installation table;

the front end of the flexible base body pipe and one end of the outer side of the linking table are bonded in the mounting table, three flexible expansion strips with circular arc-shaped sections are sleeved in the flexible base body pipe, the three flexible expansion strips form a hollow circular tubular structure in the flexible base body pipe, one end of each flexible expansion strip is fixedly connected with the inner side of the linking table, and the other end of each flexible expansion strip extends out of the tail end of the flexible base body pipe;

and a clamping table is arranged on the outer side of one end of the expansion pipe close to the hole closing device and is in running fit with the bayonet.

Furthermore, a plurality of circles of anti-skidding convex ribs are uniformly arranged on the outer side of the flexible expansion strip.

Furthermore, the expansion pipe is a hard pipe, penetrates through the interior of the flexible base body pipe and extends out of the flexible base body pipe, and the extending part of the expansion pipe is arranged to be an inclined plane.

Furthermore, an internal thread is arranged in a port at one end of the expansion pipe connected with the obturator.

To sum up, the utility model has the advantages of it is following:

the utility model provides a but reducing spinal surgery distraction device, cooperation and the expansible characteristic of flexible base member pipe through obturator and expansion pipe realize the implantation expansion of different diameter expansion pipes, greatly reduced the traumatic nature of operation, reduced patient's misery.

Drawings

FIG. 1 is an assembled view of a variable diameter spinal distraction device;

fig. 2 is a disassembled schematic view of the variable diameter spinal surgery distraction device;

FIG. 3 is an exploded view of the mounting table and flexible substrate tube;

FIG. 4 is a schematic structural view of the variable-diameter spinal surgery distraction device after the obturator is removed;

FIG. 5 is a schematic view of the application of the variable diameter spinal surgical distraction device;

wherein, 1, mounting a platform; 2-a flexible substrate tube; 3-expanding the tube; 4-closing the hole device; 5-an engagement table; 6-bayonet; 7-a flexible expansion strip; 8-antiskid convex ribs; 9-internal thread; 10-clamping table.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

In one embodiment of the present invention, as shown in fig. 1, a variable diameter spinal surgery distraction device is provided, which comprises a mounting table 1, a flexible base tube 2, an expansion tube 3, and a obturator 4.

Specifically, the method comprises the following steps:

in the preferred embodiment of the present invention, as shown in fig. 2-3, a joint table 5 is bonded inside the mounting table 1; the inner side of the mounting table 1 is provided with a bayonet 6. Wherein a bayonet 6 at the inner side of the mounting table 1 is arranged at one end close to the hole closing device 4, and a joint table 5 is arranged at one end close to the flexible base pipe 2 in the mounting table 1.

In some optional embodiments of the present invention, the front end of the flexible substrate tube 2 is bonded to the outside of the joining table 5, three flexible expansion strips 7 with arc-shaped cross sections are sleeved in the flexible substrate tube 2, the three flexible expansion strips 7 surround to form a hollow circular tube shape, and a plurality of circles of anti-skid convex ribs 8 are uniformly arranged outside the flexible expansion strips 7 to ensure the adhesion of the flexible expansion strips 7 and the inner wall of the flexible substrate tube 2; meanwhile, one end of the flexible expansion strip 7 is fixedly connected with the inner side of the linking table 5, and the other end of the flexible expansion strip extends out of the tail end of the flexible base pipe 2, so that the expansion pipe 3 is inserted into the hollow circular pipe surrounded by the flexible expansion strip 7, and the flexible expansion strip 7 is made of flexible materials, so that the expansion pipe 3 can be extruded and deformed and restored under the action of the expansion pipes 3 of different specifications, and can adapt to the expansion pipes 3 of different specifications. Meanwhile, as can be seen from fig. 3, the flexible base pipe 2 is of a hollow pipe structure with a circular truncated cone at the front end, and one end of the flexible expansion strip 7, which is close to the joining table 5, is provided with a structure fixedly connected with the joining table 5, which may be a clamping strip, which is of three extending structures extending in fig. 3.

In some optional embodiments of the present invention, the dilation tube 3 is a multi-gauge diameter rigid tube, including a major diameter dilation tube 3 and a minor diameter dilation tube 3, the gauge of the dilation tube being determined by the particular surgical needs. The outlet end of the expansion pipe 3 is an inclined plane, an internal thread 9 is arranged in the port at the other end, a clamping table 10 is arranged on the outer side of the expansion pipe, and the clamping table 10 can be in running fit with a bayonet 6 on the inner side of the mounting table 1.

Wherein the obturator 4 cooperates with the internal thread 9 of the dilation tube 3 by means of an external thread.

In use, as shown in fig. 5, the method comprises the following steps:

s1, firstly, connecting a hole closing device 4 with a thin-diameter expansion pipe 3 through internal threads 9; a hand-held obturator 4 is used for holding a handle and inserting a thin-diameter expansion pipe 3 into the flexible base pipe 2 from the mounting table 1; the flexible matrix tube 2 with the small diameter is inserted into the position to be operated through the spinal column wound by the obturator 4;

s2, pulling out the hole closing device 4 and the small-diameter expanding tube 3, replacing the large-size hole closing device 4 and the large-diameter expanding tube 3, inserting the large-diameter expanding tube 3 into the flexible base tube 2 through the hole closing device 4 in the same mode, rotating the hole closing device 4, matching the clamping table 10 at the port of the channel tube with the inner bayonet 6 of the mounting table 1, fixing the large-diameter expanding tube 3 in the flexible base tube 2, finally screwing out the hole closing device 3, and finally realizing inner hole expansion of spinal surgery, wherein the expanding to different diameters can be realized according to the requirements of different surgical instruments;

s3, after the operation is finished, the channel tube is screwed out through the obturator 4, the small-diameter obturator 4 and the expansion tube 3 are replaced, and finally the whole variable-diameter spine operation distraction device is withdrawn.

Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the scope of the patent should not be limited thereto. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.

Claims

1. A variable-diameter spinal surgery distraction device is characterized in that: the device comprises a flexible base body pipe (2), an expansion pipe (3) and a hole closing device (4) which are sequentially connected, wherein a mounting table (1) is arranged at the joint of the flexible base body pipe (2) and the expansion pipe (3), a connecting table (5) is bonded in the mounting table (1), and a bayonet (6) is arranged at one end, close to the expansion pipe (3), of the inner side of the mounting table (1);

the front end of the flexible base body pipe (2) is connected with one end of the outer side of the connecting table (5), the other end of the outer side of the connecting table (5) is bonded in the mounting table (1), three flexible expansion strips (7) with arc-shaped cross sections are sleeved in the flexible base body pipe (2), the three flexible expansion strips (7) form a hollow circular tubular structure in the flexible base body pipe (2), one end of each flexible expansion strip (7) is fixedly connected with the inner side of the connecting table (5), and the other end of each flexible expansion strip (7) extends out of the tail end of the flexible base body pipe (2);

a clamping table (10) is arranged on the outer side of one end, close to the hole closing device (4), of the expansion pipe (3), and the clamping table (10) is in rotating fit with the bayonet (6).

2. The variable diameter spinal surgical distraction device of claim 1, wherein: and a plurality of circles of anti-skidding convex ribs (8) are uniformly arranged on the outer side of the flexible expansion strip (7).

3. The variable diameter spinal surgical distraction device of claim 1, wherein: the expansion pipe (3) is a hard pipe, the expansion pipe (3) penetrates through the interior of the flexible base body pipe (2) and extends out of the flexible base body pipe (2), and the extending part of the expansion pipe (3) is arranged to be an inclined plane.

4. The variable diameter spinal surgical distraction device of claim 1, wherein: an internal thread (9) is arranged in a port at one end of the expansion pipe (3) connected with the obturator (4).