CN220778381U - Channel retractor for orthognathic surgery - Google Patents

Abstract

The utility model relates to the field of medical instruments, in particular to a channel retractor for orthognathic surgery, which comprises a cortex retractor, a jaw supporting device and a sliding bearing device, wherein a ring is arranged at the rear end of the cortex retractor, a cortex retractor surface which is concavely and downwards bent is arranged at the front end of the cortex retractor, the sliding bearing device which can slide along the upper surface of the cortex retractor is slidably arranged at the front end of the cortex retractor, a bone cutter working surface which is concavely and downwards bent is arranged at the front end of the sliding bearing device, the front end of the cortex retractor is hinged with the jaw supporting device, the rear end of the jaw supporting device is provided with a ring, and a jaw supporting rod which is strip-shaped and is opened towards two sides is arranged at the front end of the jaw supporting device.

Description

Channel retractor for orthognathic surgery

Technical Field

The present utility model relates to the field of medical devices, and more particularly to a channel retractor for orthognathic surgery.

Background

The mandibular ascending branch sagittal osteotomy is an operation for improving mandibular face and improving facial beauty by intercepting mandibular protruding bones, and is suitable for oral operation of mandibular face deformity such as mandibular anterior process deformity, open deformity, small jaw deformity, first gill arch syndrome of partial jaw deformity and the like. In the operation process, since sagittal saw cleavage is needed during osteotomy, a channel retractor is commonly used in the operation to assist in completing the operation in order to protect the damage of the jaw peripheral tissues of a patient. The channel retraction devices currently in use guide osteotomies, providing a visual osteotomy environment for medical workers, the following drawbacks remain: when the lower edge of the mandible is cut, the channel retractor in the prior art cannot move forward along the splitting direction, so that the osteotome is guided to cut, and therefore, the peripheral cortex tissue of the mandible of a patient can be damaged, and the postoperative recovery of the patient is affected.

There is a need for a channel retractor for orthognathic surgery that assists in solving the above-described problems.

Disclosure of Invention

The utility model aims to solve the problem that a channel retractor cannot move forward along a splitting direction in the prior art, and provides the channel retractor for orthognathic surgery.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a passageway retractor for orthognathic surgery, includes cortex retractor, jaw strutting arrangement, slip bearing device, the ring is installed to cortex retractor rear end, cortex retractor front end sets up the cortex that the indent was buckled downwards and pulls away the face, cortex retractor slidable mounting can follow its upper surface gliding slip bearing device, slip bearing device front end sets up the bone cutter working face that the indent was buckled downwards, jaw strutting arrangement is articulated to cortical retractor front end, the ring is installed to jaw strutting arrangement rear end, jaw strutting arrangement front end is provided with the strip and opens the jaw bracing piece to both sides.

Preferably, a rotating shaft bracket is arranged at the rear end of the cortex retracting surface of the cortex retracting device, and a through hole for installing a rotating shaft is formed in the rotating shaft bracket;

preferably, a rotating shaft is arranged at the rear end of a jaw supporting rod of the jaw supporting device, and the rotating shaft is arranged in a through hole on a rotating shaft frame;

preferably, the cortex retracting device and the jawbone supporting device are opened and closed through the arranged finger ring;

preferably, the upper surface of the leather retractor device is attached to the lower surface of the sliding bearing device, sliding grooves are formed in two sides of the upper surface of the leather retractor device, and sliding blocks capable of sliding in the sliding grooves of the leather retractor device are arranged in two sides of the lower surface of the sliding bearing device;

preferably, the jaw support rod of the jaw support device is bent at an opening angle along with the cortical retraction surface.

In summary, the technical effects and advantages of the present utility model are: a channel retractor for orthognathic surgery, through the cortex retractor articulated with the jawbone support device using the spindle and the finger ring installed on the cortex retractor and the jawbone support device, can realize the opening and closing of the cortex retractor and the jawbone support device, increase the visual range in the osteotomy process; through the sliding blocks arranged on the upper surface sliding groove of the cortex retracting device and the lower surface of the sliding bearing device, the sliding bearing device can automatically move forward to the osteotomy position when the cortex retracting device is opened and closed upwards, and the concave downward bending osteotome working surface arranged at the front end of the sliding bearing device can prevent the sliding bearing device from moving back in the working process of the osteotome after contacting with the peripheral cortex of the jawbone.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a second state structure of the present utility model;

FIG. 3 is a schematic elevational view of the present utility model;

FIG. 4 is a schematic diagram of an exploded construction of the present utility model;

FIG. 5 is a schematic partial cross-sectional view of the present utility model;

in the figure: 1-cortex retracting device, 101-upper finger ring, 102-cortex retracting surface, 103-rotating shaft frame and 104-sliding groove; 2-jaw supporting device, 201-lower finger ring, 202-jaw supporting rod, 203-rotating shaft; 3-sliding bearing device, 301-osteotomy tool working surface, 302-sliding block.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Example 1

As shown in fig. 1 to 5, the channel retractor for orthognathic surgery provided by the utility model comprises a cortex retractor 1, a jawbone supporting device 2 and a sliding bearing device 3;

in this embodiment, a finger ring 101 is mounted at the rear end of the cortex retracting device 1, a cortex retracting surface 102 which is concave and bent downward and conforms to the anatomical structure of a human body is disposed at the front end of the cortex retracting device 1, the cortex retracting surface 102 is in contact with the cortex around the jaw bone, sliding grooves 104 are formed in two sides of the upper surface of the cortex retracting device 1, and sliding receiving devices 3 with sliding blocks 302 disposed in two sides of the lower surface are mounted in the sliding grooves 104;

in this embodiment, the front end of the sliding bearing device 3 is provided with a bone cutter working surface 301, the bone cutter working surface 301 is designed to be of a concave downward bending structure conforming to the anatomical structure of the human body, the upper surface of the cortex retractor device 1 is attached to the lower surface of the sliding bearing device 3, the structure can prevent the bone cutter working surface 301 from moving back when guiding the bone cutter to work, the rear end of the cortex retractor surface 102 of the cortex retractor device 1 is provided with a spindle bracket 103, and the spindle bracket 103 is provided with a through hole for installing a spindle;

in this embodiment, the cortical retractor 1 is hinged to the jaw support 2, the rear end of the jaw support 2 is provided with a finger ring 201, the front end of the jaw support 2 is provided with jaw support rods 202 that slightly open to two sides, the rear end of the jaw support rods 202 of the jaw support 2 is provided with a rotating shaft 203, the rotating shaft 203 is installed in a through hole on the rotating shaft frame 103, and the opening angle of the jaw support rods 202 of the jaw support 2 is bent along with the cortical retractor surface 102.

In this embodiment, the upper ring 101 and the lower ring 201 of the cortical retractor 1 and the jaw supporting device 2 are vertically installed.

Example 2

Based on example 1, the specific operational procedure of the present utility model is:

when osteotomy is carried out on a patient, the cortex retracting surface 102 at the front end of the cortex retracting device 1 is contacted with the cortex of the tissues around the jaw, the jaw supporting rod 202 of the jaw supporting device 2 is contacted with the lower side of the jaw, fingers are placed in the upper finger ring 101 and the lower finger ring 201, the osteotome is placed on the working surface 301 of the osteotome to start working, the cortex retracting device 1 and the jaw supporting device 1 are opened through the finger rings according to the position of the osteotome for opening the jaw, the visual range is increased, the sliding bearing device 3 is moved forwards, and a new working position is provided for the osteotome.

Example 3

Based on the embodiment 1 and the embodiment 2, the beneficial effects obtained by the utility model are as follows:

in this embodiment, a channel retractor for orthognathic surgery can realize the rotation and opening of the cortical retractor 1 and the jaw supporting device 2 by arranging the cortical retractor 1 and the jaw supporting device 2 hinged by the rotating shaft 203, and the upper finger ring 101 arranged on the cortical retractor 1 and the lower finger ring 201 arranged on the jaw supporting device 3, and increase the visual range in the osteotomy process;

in this embodiment, by the sliding grooves 104 formed on two sides of the upper surface of the cortex retracting device 1 and the sliding blocks 302 formed on two sides of the lower surface of the sliding supporting device 3, the sliding supporting device 3 can automatically move forward to the osteotomy position when the cortex retracting device is opened upwards, and the concave downward bending osteotome working surface 301 which is arranged at the front end of the sliding supporting device 3 and accords with the human anatomy structure can prevent the sliding supporting device 3 from moving backwards in the working process of the osteotome after contacting with the peripheral cortex of the jawbone.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (5)

1. The utility model provides a passageway retractor for orthognathic surgery, its characterized in that includes cortex retractor, jaw strutting arrangement, slip bearing device, the ring is installed to cortex retractor rear end, cortex retractor front end sets up the cortex that indent was buckled downwards and pulls out the face, cortex retractor slidable mounting can be followed its upper surface gliding slip bearing device, slip bearing device front end sets up indent and buckles the osteotome working face that buckles downwards, jaw strutting arrangement is articulated to cortex retractor front end, the ring is installed to jaw strutting arrangement rear end, jaw strutting arrangement front end is provided with the jaw bracing piece that the strip was opened to both sides.

2. The channel retractor device for orthognathic surgery according to claim 1, wherein a rotating shaft bracket is provided at a rear end of a cortex retracting surface of the cortex retractor device, and a through hole for installing a rotating shaft is formed in the rotating shaft bracket.

3. The channel retractor device for orthognathic surgery according to claim 1, wherein a rotation shaft is provided at a rear end of a jaw support rod of the jaw support device, and the rotation shaft is installed in a through hole of a rotation shaft bracket.

4. The channel retractor for orthognathic surgery according to claim 1, wherein the upper surface of the cortical retractor is attached to the lower surface of the sliding support, sliding grooves are formed in two sides of the upper surface of the cortical retractor, and sliding blocks capable of sliding in the sliding grooves of the cortical retractor are arranged on two sides of the lower surface of the sliding support.

5. A tunnel retractor for orthognathic surgery according to claim 1, wherein a jaw support rod of the jaw support device is bent in its open angle with a cortical retractor surface.