One-sided retractor

Abstract

The invention provides a unilateral retraction device which is used for a craniocerebral operation through an eyebrow arch approach so as to expand an incision at the eyebrow arch to expose an operation section. The first side of the incision is an eyelid side, and the second side is a frontal side; the device comprises a main body section, a left section and a right section, the main body section extends transversely and is used for abutting against the eyelid side of the incision; the left section is connected to the left end of the main body section through a first transition section, and the right section is connected to the right end of the main body section through a second transition section; the first transition section and the second transition section respectively form an arc-shaped bent shape; the left section extends towards the right front, and the right section extends towards the left front; the left section and the right section are used for abutting against the frontal side of the incision; the main body section, the first transition section, the left section, the second transition section and the right section are integrally formed; the first transition section and the second transition section are made of elastic materials.

Description

Technical Field

[0001] This application relates to a medical device, and more particularly to a unilateral retraction device. Background Technology

[0002] Currently, for craniocerebral surgery via the brow bone approach, the surgical area consists of the forehead skin on one side and the upper eyelid on the other. Before the approach, the skin needs to be retracted. However, the current retraction device can only apply force to both sides. This results in poor safety for the upper eyelid area, making it prone to damage to the eye structure. Furthermore, the tissue is relatively thin and has poor protection, making it difficult to apply force. Consequently, the other side also experiences poor force application, resulting in insufficient effective exposure of the entire incision area, which affects the exposure range and safety of the surgery. Summary of the Invention

[0003] In view of the above problems, this application aims to provide a unilateral retraction device that can essentially retract the skin towards the forehead for surgery via the brow bone approach, thereby maximizing the protection of the eyelids and the eyeball and increasing the effective exposure range.

[0004] The unilateral retraction device of this application is used in craniocerebral surgery via the brow bone approach to open the incision at the brow bone and expose the surgical area; the first side of the incision is the eyelid side, and the second side is the forehead side; it includes: a main body segment, a left segment, and a right segment; The main body extends laterally to rest against the eyelid side of the incision; The left segment is connected to the left end of the main body segment via a first transition segment, and the right segment is connected to the right end of the main body segment via a second transition segment; the first transition segment and the second transition segment respectively form an arc-shaped bend; the left segment extends towards the right front and the right segment extends towards the left front; the left and right segments are used to abut against the frontal side of the incision. The main body, first transition section, left section, second transition section, and right section are formed as a whole; The first and second transition sections are made of elastic materials.

[0005] Preferably, the main body segment, the first transition segment, the left segment, the second transition segment, and the right segment are integrally formed from the same elastic material.

[0006] Preferably, at least a portion of the main body segment facing the eyelid side forms an arc-shaped notch to hold the cut at the edge of the eyelid side in the arc-shaped notch; At least a portion of the left segment facing the forehead forms an arc-shaped notch, and at least a portion of the right segment facing the forehead forms an arc-shaped notch, so as to hold the incision at the edge of the forehead in the arc-shaped notch.

[0007] Preferably, cylindrical protrusions are formed on the main body segment, left segment, and right segment respectively, which are used to clamp the left segment and right segment under the action of the placement unit.

[0008] Preferably, the middle part of the main body section includes two protrusions, with a predetermined interval formed between the two protrusions; one protrusion is formed on the right end of the left section; and one protrusion is formed on the left end of the right section.

[0009] Preferably, the placement unit includes a first cross plate and a second cross plate; the first cross plate and the second cross plate are connected by a screw rod in the middle to form a "tu" shape; A first raised portion is formed on the upper side of the middle of the first cross bar, and a circular through hole is provided in the first raised portion, and the diameter of the through hole is larger than the outer diameter of the screw rod; two notch grooves are formed on the front side of the first cross bar, and the positions of the two notch grooves correspond to the positions of the two protrusions of the main body section; A second raised portion is formed on the upper side of the middle of the second cross bar, and a long notch groove is formed on the rear side of the second cross bar, and the long notch groove corresponds to the protrusion on the right end of the left section and the protrusion on the left end of the right section; The second end of the screw rod is fixed on the rear side of the second raised portion of the second cross bar; the first end of the screw rod passes through the through hole of the first raised portion of the first cross bar and then a nut is installed; when the nut is tightened, the distance between the first cross bar and the second cross bar becomes smaller, whereby the first cross bar applies pressure to the protrusion of the main body section, and the second cross bar applies pressure to the protrusion on the right end of the left section and the protrusion on the left end of the right section, so that the left section and the right section are respectively compressed towards the main body section, and thus the entire unilateral retractor is compressed.

[0010] The unilateral retractor of the present application forms a relatively large support for the eyelid side of the incision through the main body section, and the frontal side of the incision is expanded by the left section and the right end, so that the entire surgical area is basically formed by expanding towards the frontal side through the incision, protecting the eyelid part and the eyeball to the greatest extent and increasing the effective exposure range. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic three-dimensional structure diagram of the unilateral retractor of the present application; Figure 2 is Figure 1 the schematic front view structure diagram of the unilateral retractor; Figure 3 is Figure 1 the schematic top view structure diagram of the unilateral retractor; Figure 4 is Figure 1 the schematic sectional structure diagram of the unilateral retractor; Figure 5 denotes Figure 1 the placement unit used in cooperation with the unilateral retractor; Figure 6 is Figure 1 the schematic three-dimensional structure diagram of the unilateral retractor after installing the Figure 5 placement unit. Detailed Implementation

[0012] The single-sided retraction device of this application will now be described in detail with reference to the accompanying drawings.

[0013] The unilateral retraction device of this application is used for craniocerebral surgery via the brow bone approach to open the incision at the brow bone and expose the surgical area; the first side of the incision is the eyelid side, and the second side is the forehead side; it includes: a main body segment 11, a left segment 12, and a right segment 13.

[0014] The main body segment 11 extends laterally to rest against the eyelid side of the incision. The length of the main body segment 11 is greater than the sum of the lengths of the left segment 12 and the right segment 13.

[0015] The left segment 12 is connected to the left end of the main body segment 11 via the first transition segment 14, and the right segment 13 is connected to the right end of the main body segment 11 via the second transition segment 15; the first transition segment 14 and the second transition segment 15 respectively form an arc-shaped bend; the left segment 12 extends toward the right front, and the right segment 13 extends toward the left front; the left segment 12 and the right segment 13 are used to abut against the frontal side of the incision.

[0016] The main body section 11, the first transition section 14, the left section 12, the second transition section 15, and the right section 13 are formed as one unit.

[0017] In one embodiment, only the first transition segment 13 and the second transition segment 14 are made of an elastic material, such as medical elastic metal. The main body segment 11, the left segment 12, and the right segment 13 may not be made of an elastic material.

[0018] In one embodiment, the main body segment 11, the first transition segment 14, the left segment 12, the second transition segment 15, and the right segment 13 are integrally formed from the same elastic material.

[0019] In one embodiment, at least a portion of the main body segment 11 facing the eyelid side forms an arc-shaped notch to hold the cut at the edge of the eyelid side in the arc-shaped notch, making it difficult for it to fall out. At least a portion of the left segment 12 facing the forehead side forms an arc-shaped notch, and at least a portion of the right segment 13 facing the forehead side forms an arc-shaped notch, so as to hold the cut at the edge of the forehead side in the arc-shaped notch, making it difficult for it to fall out.

[0020] At this point, the cross-sections of the first transition segment 14 and the second transition segment 15 can be rectangular or elliptical.

[0021] In another embodiment, the cross-sections of the main body segment 11, the first transition segment 14, the left segment 12, the second transition segment 15, and the right segment 13 can also be the same.

[0022] Cylindrical protrusions are respectively formed on the main body section 11, the left section 12, and the right section 13 for clamping the left section 12 and the right section 13 under the action of the placement unit 20.

[0023] Specifically, the middle part of the main body section 11 includes two first protrusions 11a, with a predetermined interval formed between the two first protrusions 11a; a second protrusion 12a is formed on the right end of the left section 12; and a third protrusion 13a is formed on the left end of the right section 13.

[0024] The placement unit 20 includes a first cross plate 22 and a second cross plate 21; the first cross plate 22 and the second cross plate 21 are connected in the middle by a screw 23 to form a "tu" shape.

[0025] The first cross bar 22 forms a first raised portion 22b on the upper side of its middle part. A circular through hole is provided in the first raised portion 22b, and the diameter of the through hole is larger than the outer diameter of the screw 23; two first notch portions 22a are formed on the front side of the first cross bar 22, and the positions of the two first notch portions 22a correspond to the positions of the two first protrusions 11a of the main body section 11. Each first notch portion 22a has a first protrusion 11a stuck in it.

[0026] The second cross bar 21 forms a second raised portion 21b on the upper side of its middle part. The second cross bar 21 forms an elongated notch portion 21a on its rear side, and the elongated notch portion 21a corresponds to the second protrusion 12a on the right end of the left section 12 and the third protrusion 13a on the left end of the right section 13.

[0027] The second end of the screw 23 is fixed to the rear side of the second raised portion 21b of the second cross bar; the first end of the screw 23 passes through the through hole of the first raised portion 22b of the first cross bar and then a nut 24 is installed; when the nut 24 is tightened, the distance between the first cross bar 22 and the second cross bar 21 becomes smaller. Thus, the first cross bar 22 applies pressure to the first protrusion 11a of the main body section 11, and the second cross bar 21 applies pressure to the second protrusion 12a on the right end of the left section 12 and the third protrusion 13a on the left end of the right section 13, causing the left section 12 and the right section 13 to be compressed toward the main body section 11 respectively, and thus the entire unilateral retractor device is compressed.

[0028] During use, first, the unilateral retractor device is installed together with the placement unit, as Figure 6As shown. Then, by using the nut to reduce the distance between the first and second crossbars, the left and right segments are compressed towards the main body segment, with the left and right segments close to the main body segment, and the unilateral retraction device is in a fully compressed state. The unilateral retraction device in a bent and compressed state is placed into the incision, with one side of the main body segment facing the eyelid side and one side of the left and right segments facing the forehead side. The corresponding incision edges are inserted into the arc-shaped recesses of the main body segment, left segment, and right segment. Then, the nut is gradually loosened, and under the elastic restoring force of the first and second transition parts, the left and right segments open towards the forehead side, opening the incision to form the surgical area. Here, the length of the main body segment should be approximately the same as the length of the incision, so that the deformation during the opening process mainly occurs on the forehead side. After the surgical area is fully opened, the nut is further screwed in to loosen the placement unit from the protrusions, and the placement unit is removed from the unilateral retraction device, thus fully exposing the surgical area.

Claims

1. A unilateral retraction device for craniocerebral surgery via the brow ridge approach, used to open the incision at the brow ridge to expose the surgical area; The first side of the incision is the eyelid side, and the second side is the frontal side; It includes: a main body section, a left section, and a right section; The main body section extends horizontally and is used to abut against the eyelid side of the incision; The left section is connected to the left end of the main body section through a first transition section, and the right section is connected to the right end of the main body section through a second transition section; the first transition section and the second transition section are respectively formed in an arc-shaped bend; the left section extends towards the right front, and the right section extends towards the left front; the left section and the right section are used to abut against the frontal side of the incision; The main body section, the first transition section, the left section, the second transition section, and the right section are integrally formed; The first transition section and the second transition section are made of an elastic material.

2. The unilateral retractor device according to claim 1, wherein: The main body section, the first transition section, the left section, the second transition section, and the right section are integrally formed from the same elastic material.

3. The unilateral retractor device according to claim 1, wherein: At least a part of the side of the main body section facing the eyelid side forms an arc-shaped notch to hold the edge of the incision on the eyelid side in the arc-shaped notch; At least a part of the side of the left section facing the frontal side forms an arc-shaped notch, and at least a part of the side of the right section facing the frontal side forms an arc-shaped notch to hold the edge of the incision on the frontal side in the arc-shaped notch.

4. The unilateral retractor device according to claim 1, wherein: Cylindrical protrusions are respectively formed on the main body section, the left section, and the right section for clamping the left section and the right section under the action of the placement unit.

5. The unilateral retractor device according to claim 4, wherein: The middle part of the main body section includes two protrusions, and a predetermined interval is formed between the two protrusions; a protrusion is formed on the right end of the left section; a protrusion is formed on the left end of the right section.

6. The unilateral retractor device according to claim 5, wherein: The placement unit includes a first cross plate and a second cross plate; the first cross plate and the second cross plate are connected by a screw in the middle to form a "soil" shape; The first cross bar forms a first raised portion on the upper side of its middle part, and a circular through hole is formed in the first raised portion, and the diameter of the through hole is larger than the outer diameter of the screw; two notches are formed on the front side of the first cross bar, and the positions of the two notches correspond to the positions of the two protrusions of the main body section; The second cross bar forms a second raised portion on the upper side of its middle part, and a long notch is formed on the rear side of the second cross bar, and the long notch corresponds to the protrusion on the right end of the left section and the protrusion on the left end of the right section; The second end of the screw is fixed to the rear side of the second raised portion of the second cross bar; the first end of the screw passes through the through hole of the first raised portion of the first cross bar and then a nut is installed; when the nut is tightened, the distance between the first cross bar and the second cross bar becomes smaller, whereby the first cross bar applies pressure to the protrusion of the main body section, and the second cross bar applies pressure to the protrusion on the right end of the left section and the protrusion on the left end of the right section, so that the left section and the right section are respectively compressed towards the main body section, and thus the entire unilateral retractor device is compressed.

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