Breast retractor and cavity builder

Abstract

The present application relates to the technical field of medical devices, and discloses a breast retractor, which comprises a retractor body and a retractor handle connected at an acute angle, the retractor body is flat and long, and a comb-shaped needle passing part with an open end is formed at the free end of the retractor body. The present application also discloses a breast cavity building device, which comprises a breast retractor and a second retractor, the second retractor comprises a second retractor body, a working window frame and a second retractor handle connected in sequence, the second retractor body is flat and long, the second retractor handle and the second retractor body are located above and below the working window frame respectively, the retractor body is connected to the upper side of the working window frame, and the retractor body, the working window frame and the second retractor body form an operation cavity. The breast retractor and the cavity building device can establish and maintain a gradually increasing operation space from front to back when breast-conserving surgery is performed through a small incision under the armpit, and are especially suitable for small partitioned and sleeve breast cutting surgery for marking the incisal edge, and have the advantages of reliable structure, easy operation, good operation effect and easy popularization.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a breast retractor and a cavity building device. Background Art

[0002] Conventional open breast-conserving surgery typically requires an axillary incision to treat the lymph nodes and an incision on the skin surface of the breast tumor to remove the tumor. This inevitably leaves a surgical scar on the breast, affecting appearance. Innovative laparoscopically assisted axillary breast-conserving surgery completely eliminates the need for an incision on the breast surface, utilizing only the hidden incision under the armpit to treat the lymph nodes. This incision separates the gap between the breast and the pectoralis major muscle, separates the skin flap on the tumor surface, and creates a surgical cavity. This integrates tumor margin calibration and resection for precise and extended local excision of the tumor. This requires a specialized cavity-building device to facilitate laparoscopic-assisted surgery.

[0003] In addition, because the breast is significantly higher than the skin in the armpit area, special retractors are required to better meet the needs of the surgery when performing a transaxillary surgical operation to remove breast lesions. Summary of the Invention

[0004] In response to the problems existing in the existing technology, the present invention provides a breast retractor and a cavity builder that can establish and maintain a surgical space that gradually increases from front to back during breast-conserving endoscopic breast resection surgery through a small incision in the armpit. This breast retractor and cavity builder are particularly suitable for use in small-fraction sleeve mastectomy with calibrated cutting edges.

[0005] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0006] A breast retractor is characterized by comprising a retractor body and a retractor handle, the retractor body and the retractor handle being connected at an acute angle. The retractor body is elongated, with a needle insertion portion at its free end, shaped like open-ended comb teeth. This creates a gradually expanding operating space from front to back. The elongated shape is suitable for securing and supporting soft, easily deformable, and mobile breast tissue, and the needle insertion portion is suitable for threading a steel wire through and positioning the retractor when the retractor is extended. This breast retractor is particularly suitable for separating the retromammary space between the pectoralis major and the breast.

[0007] Preferably, the angle between the retractor body and the retractor handle is 30°-80°, so as to establish a working space of suitable size.

[0008] Preferably, the device further includes a light source and an aspirator, which are located below the retractor body and are fixedly or movably connected to the retractor body. When movably connected, the aspirator can freely rotate and retract. The light source allows for better observation and operation, and the aspirator absorbs smoke and bleeding generated during electrocautery and cutting.

[0009] Preferably, the aspirator is movably connected to the retractor body, with at least one connecting ring disposed beneath the retractor body. The aspirator, positioned within the connecting ring, is capable of free rotation and extension. The connecting ring may also be a clamp or a retaining spring. The free rotation and extension of the aspirator allows for more flexible use of the aspirator to manipulate breast tissue not supported by the retractor body, further expanding the working chamber. It also allows for better suction of smoke and bleeding from various locations.

[0010] Preferably, the free end of the retractor handle is provided with at least one upper connecting portion, which is a through slot and / or a through hole. The retractor handle can be fixed to the original operating frame of the surgery through the upper connecting portion without the need to hold it in hand.

[0011] Preferably, the retractor body has a width of 2-6 cm, a length of 10-30 cm, and a thickness of 1-3 mm. The breast retractor can be made into three or more sizes, large, medium, and small, suitable for lesions at different locations and depths.

[0012] A breast cavity creation device includes the aforementioned breast retractor and a second retractor, the second retractor comprising a second retractor body, a working window frame, and a second retractor handle connected in sequence. The second retractor body is oblong, with the second retractor handle and the second retractor body respectively positioned above and below the space formed by the working window frame. The retractor body is connected to the upper edge of the working window frame, and the retractor body, working window frame, and second retractor body enclose an operating cavity. The two retractors are used in conjunction to establish and maintain a surgical space with upper and lower support that gradually increases from front to back.

[0013] Preferably, the retractor body and the upper edge of the working window frame are both provided with a main connecting portion at corresponding positions. The main connecting portion is a through hole and / or a through slot, and the retractor body and the upper edge of the working window frame are detachably connected via the main connecting portion. A detachable connection is more flexible than a fixed connection, and the breast retractor and the second retractor can be used separately.

[0014] Preferably, the connecting end of the hook body and the hook handle has downward side wings, on which protrusions are provided, and a limiting groove is provided on the side edge of the working window frame, and the protrusion is inserted into the limiting groove for detachable connection.

[0015] Preferably, the hook handle and the second hook handle are both provided with lower connecting parts at corresponding positions, the lower connecting parts are through holes and / or through grooves, and the hook handle and the second hook handle are detachably connected via the lower connecting parts.

[0016] The breast retractor and cavity building device of the present invention can establish and maintain a surgical space that gradually increases from front to back when performing endoscopic breast resection through a small incision in the armpit, and is particularly suitable for small-fraction sleeve mastectomy with calibrated cutting edges. It has the advantages of simple and reliable structure, easy operation, good surgical effect, and easy promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic structural diagram of a breast retractor according to embodiment 1 of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of the breast retractor according to embodiment 2 of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the breast retractor according to embodiment 3 of the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of a breast retractor according to embodiment 4 of the present invention.

[0021] Figure 5 This is a schematic diagram of the second hook structure of Example 4 of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the breast cavity building device according to Example 4 of the present invention.

[0023] Figure 7 This is a schematic diagram of the structure of the breast cavity building device according to Example 5 of the present invention.

[0024] Figure 8 This is a schematic diagram of the structure of the breast retractor according to Example 6 of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of the breast cavity building device according to Example 6 of the present invention.

[0026] In the figure: 1. Retractor body; 2. Retractor handle; 3. Needle threading part; 4. Light source; 5. Suction device; 6. Connecting ring; 7. Breast retractor; 8. Second retractor; 9. Second retractor body; 10. Working window frame; 11. Second retractor handle; 12. Operating cavity; 13. Main connecting part; 14. Bump; 15. Limiting groove; 16. Lower connecting part; 17. Upper connecting part; 18. Bolt and nut group; 19. Retaining ring hole. DETAILED DESCRIPTION

[0027] The following combination Figure 1-9 The present invention is further described with specific embodiments. Example 1

[0028] Breast retractor, such as Figure 1 As shown, the hook body 1 and the handle 2 are connected at an acute angle. The hook body 1 is long and flat, with a needle-threading portion 3 at its free end, which is in the shape of a comb with an open end. The handle 2 has an upper connecting portion 17 at its free end, which is a through groove.

[0029] The included angle between the retractor body 1 and the retractor handle 2 is 70°.

[0030] The hook body 1 has a width of 3 cm, a length of 20 cm and a thickness of 2 mm. Example 2

[0031] The breast retractor is the same as that in Example 1 except that: Figure 2 As shown, the breast retractor further includes a light source 4 and a suction device 5 , which are located below the retractor body 1 and fixedly connected to the lower surface of the retractor body 1 . Example 3

[0032] The breast retractor is the same as that in Example 1 except that: Figure 3 As shown, the breast retractor also includes a light source 4 and a suction device 5, which are located below the retractor body 1. The light source 4 is fixedly connected to the lower surface of the retractor body 1, and the suction device 5 is movably connected to the retractor body 1. Two connecting rings 6 are arranged below the retractor body 1, and the suction device 5 placed in the connecting ring 6 can rotate and retract freely. Example 4

[0033] The breast retractor is the same as that in Example 1 except that: Figure 4 As shown, the connecting end of the hook body 1 and the hook handle 2 has downward-facing wings, each with a protrusion 14 that engages with a retaining groove 15 for position retention. A main connecting portion 13 is provided at a corresponding position on the hook body 1 to engage and secure with a main connecting portion 13 provided at a corresponding position on the upper edge of the working window frame 10. A lower connecting portion 16 is provided at a corresponding position on the hook handle 2 to engage with a lower connecting portion 16 provided at a corresponding position on the second hook handle 11 to secure the two hook handles.

[0034] The second retractor 8, as shown in the attached Figure 5 As shown, it includes a second hook body 9, a working window frame 10, and a second hook handle 11 connected in sequence. The second hook body 9 is oblong, and the second hook handle 11 and the second hook body 9 are respectively located above and below the space formed by the working window frame 10. The working window frame 10 is square, and the second hook body 9 is vertically connected to the lower frame of the working window frame 10. The second hook handle 11 is connected to the upper frame of the working window frame 10, and the angle between the second hook handle 11 and the second hook body 9 is 90°. A main connecting portion 13 is provided at a corresponding position on the upper frame of the working window frame 10 to cooperate with the main connecting portion 13 provided at a corresponding position on the hook body 1. Limiting grooves 15 are provided on the left and right frames of the working window frame 10 to cooperate with the protrusions 14 on the hook body 1 to limit the position. A lower connecting portion 16 is provided at a corresponding position on the second hook handle 11 to connect with the lower connecting portion 16 provided at a corresponding position on the hook handle 2.

[0035] Breast cavity builders, such as Figure 6 As shown, including the attached Figure 4 The breast retractor 7 shown in FIG. Figure 5The second hook 8 shown has its hook body 1 positioned below the upper frame of the working window frame 10. The left and right protrusions 14 are inserted into the retaining grooves 15. The two main connecting parts 13 are aligned and secured with a bolt and nut assembly 18. The two lower connecting parts 16 are aligned and also secured with a bolt and nut assembly 18. The hook body 1, working window frame 10, and second hook body 9 enclose an operating chamber 12. Example 5

[0036] The breast retractor is the same as Example 4 in other parts, except that: the breast retractor also includes a light source 4 and a suction device 5, which are located below the retractor body 1, the light source 4 is fixedly connected to the lower surface of the retractor body 1, and the suction device 5 is movably connected to the retractor body 1, and two connecting rings 6 are arranged below the retractor body 1, and the suction device 5 placed in the connecting ring 6 can rotate and retract freely.

[0037] The other parts of the breast cavity building device are as shown in Example 4, except that: Figure 7 As shown, the breast retractor described in this embodiment is used to cooperate with the second retractor 8 for connection. Example 6

[0038] The breast retractor is the same as that in Example 5 except that: Figure 8 As shown, the end where the retractor body 1 connects to the retractor handle 2 has two retaining spring holes 19. The connecting ring 6 comprises two circular retaining springs, which snap into the retaining spring holes 19 and flexibly connect to the retractor body 1. The light source 4 and the suction device 5 placed in the retaining springs can rotate and retract freely. (The light source 4 and the suction device 5 are not shown in the figure.)

[0039] The other parts of the breast cavity building device are as shown in Example 5, except that: Figure 9 As shown, the breast retractor described in this embodiment is used to cooperate with the second retractor 8 for connection.

[0040] The breast retractor and breast cavity creation device described in this embodiment are used to perform small segmentation sleeve mastectomy with a calibrated incision margin and breast-conserving surgery, including the following steps:

[0041] 1. Anesthesia, supine position, abduction of the affected upper limb, and elevation of the affected shoulder by 10-20 cm;

[0042] 2. Tumor surface positioning: Based on the specific accessibility of the tumor, select B-ultrasound or palpation of the lower body surface markings to locate the tumor boundary and the resection margin 1.5-2.0 cm away from the tumor. The resection margin is evenly divided into 8 parts, and the starting and ending points of each part are marked. The gap between the next starting point and the previous end point is about 5 mm. Each starting point and end point will serve as the wire entry and exit points for each incision.

[0043] 3. Routine disinfection and draping;

[0044] 4. Sentinel lymph node biopsy: routine sentinel lymph node imaging technique and axillary incision biopsy of the sentinel lymph node;

[0045] 5. Separation of the retromammary space: Using the breast retractor 7 described in this embodiment, under the assistance of laparoscopy, the retractor body 1 is gradually inserted along the retromammary space of the pectoralis major muscle from the axillary incision for sentinel lymph node biopsy. The upper connecting portion 17 of the retractor handle 2 is hung on the existing operating frame to expand the exposure of the surgical field. The retromammary space is fully separated in the direction of the breast quadrant where the tumor is located, and the range exceeds the projection of the tumor resection margin on the body surface. The breast retractor 7 is not removed.

[0046] 6. Introduction of the incision edge positioning wire: Under direct laparoscope vision, use a trocar to guide one end of the snare wire from the skin surface according to the starting point determined in step 2 into the retromammary space. Insert the puncture guide hook needle into the retromammary space from the end point of the snare wire and guide one end of the newly introduced snare wire out of the body surface from the end point. If the starting and end points are at the position of the breast retractor 7, operate through the gap of the needle insertion part 3, continue to complete the 8th step, and remove the breast retractor 7;

[0047] 7. Separation of skin flap on the tumor surface: From the axillary incision of the sentinel lymph node biopsy, separate the skin flap toward the tumor, and fully separate the skin flap from the breast tissue;

[0048] 8. Establish a working cavity: Insert the breast cavity creation device between the skin flap and the breast tissue, hang the upper connecting portion 17 of the retractor handle 2 on the existing operating frame, and establish the operating cavity 12. Ensure that the steel wires between the skin flap and the breast tissue, including the steel wires passing through the skin flap, are wrapped with insulating sleeves for insulation, and secure each steel wire to the insulating sleeve with small clips;

[0049] 9. Complete tumor resection and marking: Wrap the wire ends of each starting and ending section around the electrosurgical knife. Once powered on, the knife will be cut into eight sections, perpendicular to the breast, until the entire tumor is completely removed. Mark the resection margins as usual. During each section, the aspirator 5 flexibly controls the breast tissue outside the working chamber and aspirates any smoke and bleeding.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications made according to the content of the patent scope of this application should fall within the technical scope of the present invention.

Claims

1. A breast cavity creation device, comprising a breast retractor (7), characterized in that: The breast retractor (7) comprises a retractor body (1) and a retractor handle (2), wherein the retractor body (1) and the retractor handle (2) are connected at an acute angle, the retractor body (1) is flat and long, and a needle-threading portion (3) is provided at its free end, and the needle-threading portion (3) is in the shape of a comb with an open end, the breast retractor (7) further comprises a light source (4) and a suction device (5), wherein the light source (4) and the suction device (5) are located below the retractor body (1), and the suction device (5) is movably connected to the retractor body (1), and at least one connecting ring (6) is provided below the retractor body (1) and is placed at the connecting ring. The suction device (5) in the ring (6) can rotate and retract freely, and the free end of the hook handle (2) is provided with at least one upper connecting portion (17), and the upper connecting portion (17) is a through groove or / and a through hole; it also includes a second hook (8), and the second hook (8) includes a second hook body (9), a working window frame (10) and a second hook handle (11) connected in sequence, and the second hook body (9) is flat and long, and the second hook handle (11) and the second hook body (9) are respectively located above and below the space formed by the working window frame (10). The window frame (10) is square, the second hook body (9) is vertically connected to the lower frame of the working window frame (10), the second hook handle (11) is connected to the upper frame of the working window frame (10), the angle between the second hook handle (11) and the second hook body (9) is 90 degrees, the hook body (1) is connected to the upper edge of the working window frame (10), the hook body (1) and the working window frame (10) and the second hook body (9) are enclosed to form an operating cavity (12), the hook body (1) and the upper edge of the working window frame (10) are both provided with a main connecting portion (1 3), the main connecting portion (13) is a through hole and / or a through groove, the hook body (1) and the upper edge of the working window frame (10) are detachably connected through the main connecting portion (13), the hook handle (2) and the second hook handle (11) are both provided with a lower connecting portion (16) at corresponding positions, the lower connecting portion (16) is a through hole and / or a through groove, the hook handle (2) and the second hook handle (11) are detachably connected through the lower connecting portion (16), and the cavity building device can establish and maintain a surgical space that gradually increases from front to back when performing endoscopic breast resection through a small incision in the armpit.

2. The breast cavity creation device according to claim 1, characterized in that: The connecting end of the hook body (1) and the hook handle (2) has a downward wing, on which a protrusion (14) is provided. A limiting groove (15) is provided on the side edge of the working window frame (10), and the protrusion (14) is inserted into the limiting groove (15) for detachable connection.

3. The breast cavity creation device according to claim 1, characterized in that: The included angle between the retractor body (1) and the retractor handle (2) is 30°-80°.

4. The breast cavity creation device according to claim 1, characterized in that: The retractor body (1) has a width of 2-6 cm, a length of 10-30 cm, and a thickness of 1-3 mm.

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