Assistive device for breast endoscopy

Abstract

The application relates to an auxiliary device for breast endoscopic surgery, comprising a smoke blocking piece, a suction piece and a negative pressure mechanism, the smoke blocking piece is provided with a first through hole, a second through hole and a third through hole, the first through hole is used for communication with an incision of a surgical site, the second through hole is communicated with the first through hole and is used for insertion of a cutter, and the third through hole is communicated with the first through hole; the suction piece is provided with a suction channel, one end of the suction channel is communicated with the third through hole, and the negative pressure mechanism is communicated with the other end of the suction channel away from the third through hole. Compared with the traditional technology, the auxiliary device for breast endoscopic surgery can sequentially suck away the smoke generated by cutting through the first through hole and the third through hole through the suction piece, a cutter with a smoke suction function does not need to be used, the cutter has a smaller diameter and can smoothly pass through the incision on the surgical site of a patient, and the smooth operation of the surgery is ensured.

Description

Technical Field

[0001] This application relates to the technical field of medical devices, and in particular to an auxiliary device for endoscopic breast surgery. Background Technology

[0002] During laparoscopic breast surgery, the electrocoagulation cutter can coagulate the blood in the blood vessels while cutting the tissue, thereby sealing the blood vessels and achieving hemostasis. However, the electrocoagulation cutting process generates a large amount of harmful fumes, which not only affects the surgical field of vision but also harms the patient's health.

[0003] In traditional techniques, electrocoagulation cutters with a smoking function are usually used for endoscopic breast surgery. However, such electrocoagulation cutters need to integrate a component with a smoking function, which makes the diameter of the electrocoagulation cutter with the smoking function larger. As a result, the electrocoagulation cutter cannot pass smoothly through the incision on the surgical site, affecting the progress of the surgery. Utility Model Content

[0004] Therefore, it is necessary to provide an auxiliary device for breast endoscopic surgery to address the problem that traditional electrocoagulation cutters with smoking functions cannot pass smoothly through the incisions on the patient's surgical site, thus affecting the progress of the surgery.

[0005] The technical solution is as follows:

[0006] One embodiment provides an auxiliary device for laparoscopic breast surgery, comprising:

[0007] A smoke-blocking component, the smoke-blocking component having a first through hole, a second through hole and a third through hole, the first through hole being used to communicate with the incision of the surgical site, the second through hole communicating with the first through hole, the second through hole being used for inserting a cutter, and the third through hole communicating with the first through hole;

[0008] The suction member has a suction channel, one end of which communicates with the third through hole; and

[0009] A negative pressure mechanism is connected to the end of the suction channel away from the third through hole.

[0010] In the aforementioned auxiliary device for endoscopic breast surgery, the first through-hole of the smoke-blocking component is connected to the incision on the patient's surgical site, and the cutter is inserted into the second through-hole connected to the first through-hole. This allows the cutter to be smoothly inserted into the patient's incision and cut the tissue within the incision. The smoke generated during the cutting process enters the suction channel of the suction component through the first and third through-holes in sequence, and is finally removed by the negative pressure mechanism. Compared with traditional techniques, the aforementioned auxiliary device for endoscopic breast surgery uses the suction component to remove the smoke generated during cutting through the first and third through-holes in sequence, eliminating the need for a cutter with a smoke-blocking function. The cutter has a smaller diameter and can pass smoothly through the incision on the patient's surgical site, ensuring the smooth progress of the surgery.

[0011] In one embodiment, the suction member includes a suction conduit, the suction conduit being provided with the suction channel.

[0012] In one embodiment, the auxiliary device for endoscopic breast surgery further includes a flow regulator disposed in the suction tubing, the flow regulator being used to control the flow area of ​​the suction channel.

[0013] In one embodiment, the flow regulating member includes a mounting part and a pressing part. The mounting part is disposed on the suction pipe, and the pressing part is movably disposed on the mounting part. The pressing part is used to press against or move away from the outer wall of the suction pipe.

[0014] In one embodiment, the mounting part is provided with a mounting channel that extends along a first direction of the mounting part. The inner wall of the mounting channel is provided with a mounting groove that extends along a second direction of the mounting part. The second direction forms an angle with the first direction. The suction pipe passes through the mounting channel, and the pressing part is movably disposed in the mounting groove.

[0015] In one embodiment, the mounting part has an operation window, which is connected to the mounting channel and extends along the first direction. The pressing part includes a pressing wheel, which passes through the operation window. One side of the pressing wheel has a mounting protrusion, which mates with the mounting groove so that the rim of the pressing wheel can press against or move away from the outer wall of the suction pipe.

[0016] In one embodiment, the flow regulator includes a flow regulating valve.

[0017] In one embodiment, the suction line includes at least two delivery tubes having opposing first and second ends, the second end of one delivery tube communicating with the first end of the other delivery tube, the first end of the delivery tube closest to the third through hole communicating with the third through hole, and the second end of the delivery tube closest to the negative pressure mechanism communicating with the negative pressure mechanism.

[0018] In one embodiment, the auxiliary device for endoscopic breast surgery further includes a puncture device, which includes a puncture needle and a needle hub. The puncture needle is connected to the needle hub, and the needle hub is disposed in the second through hole. The puncture needle is sequentially inserted through the second through hole and the first through hole.

[0019] In one embodiment, the auxiliary device for endoscopic breast surgery further includes an incision protective sleeve, which includes a protective sleeve body, a first retaining ring, and a second retaining ring. The protective sleeve body is used to fit inside the incision. The first retaining ring is located at one end of the protective sleeve body, and the second retaining ring is located at the other end of the protective sleeve body. The first retaining ring is located in the first through hole and is used to be located on the outer surface of the skin at the incision. The second retaining ring is used to be located on the inner surface of the skin at the incision. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of an auxiliary device for endoscopic breast surgery in one embodiment of this application.

[0022] Figure 2 This is a schematic diagram of the flow regulating component in one embodiment of this application.

[0023] Attached image annotations:

[0024] 100. Smoke baffle; 110. First through hole; 120. Second through hole; 130. Third through hole; 200. Suction component; 210. Suction pipe; 211. Suction channel; 212. Delivery pipe; 2121. First end; 2122. Second end; 300. Negative pressure mechanism; 400. Flow regulating component; 410. Mounting part; 411. Mounting channel; 412. Mounting groove; 413. Operation window; 420. Pressing part; 421. Pressing roller; 422. Mounting protrusion. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0026] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0031] Please see Figure 1 One embodiment of this application provides an auxiliary device for laparoscopic breast surgery, including a smoke shield 100, a suction device 200, and a negative pressure mechanism 300. The smoke shield 100 has a first through hole 110, a second through hole 120, and a third through hole 130. The first through hole 110 is used to communicate with the incision at the surgical site. The second through hole 120 communicates with the first through hole 110 and is used for inserting a cutter. The third through hole 130 communicates with the first through hole 110. The suction device 200 is provided with a suction channel 211. One end of the suction channel 211 communicates with the third through hole 130. The negative pressure mechanism 300 is connected to the end of the suction channel 211 away from the third through hole 130.

[0032] In the aforementioned auxiliary device for endoscopic breast surgery, the first through-hole 110 of the smoke-blocking component 100 is connected to the incision on the patient's surgical site, and the cutter is inserted into the second through-hole 120 connected to the first through-hole 110. This allows the cutter to be smoothly inserted into the patient's incision and cut the tissue within the incision. The smoke generated during the cutting process enters the suction channel 211 of the suction component 200 through the first through-hole 110 and the third through-hole 130 in sequence, and is finally extracted by the negative pressure mechanism 300. Compared with traditional techniques, the aforementioned auxiliary device for endoscopic breast surgery uses the suction component 200 to extract the smoke generated during cutting through the first through-hole 110 and the third through-hole 130 in sequence, eliminating the need for a cutter with a smoking function. The cutter has a smaller diameter and can pass smoothly through the incision on the patient's surgical site, ensuring the smooth progress of the surgery.

[0033] Further, please refer to Figure 1 The smoke shield 100 has a first through hole 110 on one side and a second through hole 120 and a third through hole 130 on the other side. Thus, the side of the smoke shield 100 with the first through hole 110 faces the incision on the patient's surgical site, so that the first through hole 110 can communicate with the incision. At the same time, it is convenient to insert the cutter into the second through hole 120 and connect the suction device 200 to the third through hole 130. In addition, the smoke shield 100 can also prevent the smoke inside the incision from escaping into the external environment, ensuring the health of the doctor or patient.

[0034] Furthermore, the smoke-blocking component 100 has a first side and a second side arranged opposite to each other. The first side has a first through hole 110, and the second side has a first connecting part and a second connecting part. The first connecting part has a second through hole 120, and the second connecting part has a third through hole 130. The second connecting part can be assembled with the suction component 200, so that the suction channel 211 of the suction component 200 can communicate with the third through hole 130.

[0035] In one embodiment, the smoke shield 100 is made of rubber, which not only reduces costs but also provides a certain degree of elastic deformation while ensuring airtightness, thereby improving the general applicability of the smoke shield 100.

[0036] Please see Figure 1 In one embodiment, the suction member 200 includes a suction conduit 210, which has a suction channel 211.

[0037] The negative pressure mechanism 300 generates negative pressure in the suction channel 211 of the suction tube 210, so that the smoke generated by the cutter enters the suction channel 211 of the suction tube 210 through the first through hole 110 and the third through hole 130 of the smoke baffle 100 in sequence, and is finally drawn out; the suction tube 210 is flexible in arrangement and low in cost, so as to facilitate use in the operating room.

[0038] In one embodiment, the suction tube 210 is made of PVC material. PVC material has advantages such as softness and good antibacterial properties, which allows the suction tube 210 to be bent freely, making it easy to operate and highly safe.

[0039] Please see Figures 1 to 2 In one embodiment, the auxiliary device for endoscopic breast surgery further includes a flow regulator 400, which is disposed in the suction line 210 and is used to control the flow area of ​​the suction channel 211.

[0040] The flow regulating component 400 installed on the suction line 210 can control the flow area of ​​the suction channel 211, thereby controlling the flow rate of smoke when it flows in the suction channel 211, so that medical staff can control the suction force as needed.

[0041] As an explanation, in conventional techniques, the suction function of the electrocautery cutter is usually controlled by the nurses below the operating table rather than the surgeon. Therefore, during laparoscopic surgery, the surgeon needs to frequently instruct the nurses below the operating table, which not only fails to achieve the goal of adjusting the suction force in real time, but also consumes more time. In this embodiment, the flow regulator 400 is set on the suction tube 210. In this way, the surgeon can directly adjust the suction force in real time through the flow regulator 400 on the suction tube 210, which is convenient to operate and can reduce the operation time.

[0042] Please see Figure 2 In one embodiment, the flow regulating member 400 includes a mounting part 410 and a pressing part 420. The mounting part 410 is disposed on the suction pipe 210, and the pressing part 420 is movably disposed on the mounting part 410. The pressing part 420 is used to press against or move away from the outer wall of the suction pipe 210.

[0043] The mounting part 410 is installed on the suction pipe 210. The pressing part 420 can move on the mounting part 410 to press against or move away from the outer wall of the suction pipe 210. When the pressing part 420 presses against the outer wall of the suction pipe 210, the suction pipe 210 will deform, thereby changing the flow area of ​​the suction channel 211 in the suction pipe 210, thereby achieving the effect of controlling the flow rate of smoke when it flows in the suction channel 211.

[0044] Furthermore, when the pressure part 420 approaches and presses against the outer wall of the suction tube 210, the flow area of ​​the suction tube decreases, and the overall suction force of the smoke also decreases. When the pressure part 420 moves away from the outer wall of the suction tube 210, the suction tube 210 will return to its original shape. At this time, the flow area of ​​the suction tube increases, and the overall suction force of the smoke also increases. Medical staff can adjust the suction force of the smoke by moving the pressure part 420, making the operation more convenient.

[0045] Please see Figure 2 In one embodiment, the mounting part 410 is provided with a mounting channel 411, which extends along a first direction of the mounting part 410. The inner wall of the mounting channel 411 is provided with a mounting groove 412, which extends along a second direction of the mounting part 410. The second direction forms an angle with the first direction. The suction pipe 210 passes through the mounting channel 411, and the pressing part 420 is movably provided in the mounting groove 412.

[0046] Thus, the suction tube 210 passes through the installation channel 411 extending in the first direction, and the pressing part 420 can reciprocate within the installation groove 412 extending in the second direction. Since the first and second directions form an angle, the pressing part 420 presses against or moves away from the outer wall of the suction tube 210 during its reciprocating movement within the installation groove 412, causing the suction tube 210 to deform. This, in turn, changes the flow area of ​​the suction channel 211 within the suction tube 210, thereby controlling the flow rate of smoke within the suction channel 211. This design allows medical personnel to precisely adjust the suction force, making the implementation process more convenient.

[0047] For explanation, the first direction in the above embodiment is the length direction of the mounting portion 410 (i.e., Figure 2 The first direction is the direction A), and the second direction is the direction that forms an angle with the length direction of the mounting part 410 (i.e., direction A). Figure 2 (in the B direction), the mounting groove 412 extends along the second direction of the mounting part 410, so that the pressing part 420 can reciprocate along the second direction and press against the outer wall of the suction pipe 210.

[0048] Please see Figure 2 In one embodiment, the mounting part 410 has an operation window 413, which is connected to the mounting channel 411 and extends along a first direction. The pressing part 420 includes a pressing wheel 421, which passes through the operation window 413. One side of the pressing wheel 421 is provided with a mounting protrusion 422, which is assembled with the mounting groove 412 so that the rim of the pressing wheel 421 can press against or move away from the outer wall of the suction pipe 210.

[0049] The pressure roller 421 is inserted through the operating window 413 so that the operator can move the pressure roller 421 through the operating window 413, so that the mounting protrusion 422 on the pressure roller 421 can move within the mounting groove 412. The rim of the pressure roller 421 can abut against the outer wall of the suction tube 210. When the operator moves the pressure roller 421 through the operating window 413, the pressure roller 421 can roll on the outer wall of the suction tube 210. During the rolling process, the suction tube 210 will deform, which will change the flow area of ​​the suction channel 211, thereby controlling the flow rate of smoke in the suction channel 211, making it easier for medical staff to adjust the suction force.

[0050] Furthermore, when it is necessary to adjust the suction force, medical staff press the part of the pressure roller 421 protruding from the operation window 413 with their fingers. The friction between the fingers and the rim of the pressure roller 421 causes the pressure roller 421 to rotate, thereby allowing the pressure roller 421 to roll on the outer wall of the suction tube 210. Since the second direction is at an angle to the first direction, the pressure roller 421 will apply pressure to the suction tube 210 to different degrees during the rolling process, thereby causing the suction tube 210 to deform to different degrees, so as to control the flow rate of smoke when it flows in the suction tube, making it easier for medical staff to adjust the suction force.

[0051] In one embodiment, the mounting protrusion 422 is disposed at the center of the pressure roller 421.

[0052] In one embodiment, mounting protrusions 422 are provided on both opposite sides of the pressure roller 421, and two mounting grooves 412 are provided and respectively provided on the two inner walls opposite to the mounting channel 411. The two mounting protrusions 422 are correspondingly provided with the two mounting grooves 412, thereby improving the movement stability of the pressure roller 421.

[0053] In other feasible embodiments, the flow regulator 400 includes a flow regulating valve.

[0054] Medical staff can control the flow area of ​​the suction tube by controlling the flow regulating valve, which is low in cost and easy to operate.

[0055] Please see Figure 1 In one embodiment, the suction line 210 includes at least two delivery pipes 212, each delivery pipe 212 having a first end 2121 and a second end 2122 opposite to each other. The second end 2122 of one delivery pipe 212 is connected to the first end 2121 of the other delivery pipe 212. The first end 2121 of the delivery pipe 212 closest to the third through hole 130 is connected to the third through hole 130, and the second end 2122 of the delivery pipe 212 closest to the negative pressure mechanism 300 is connected to the negative pressure mechanism 300.

[0056] By setting at least two delivery pipes 212, the overall length of the suction line 210 can be increased, allowing the suction line 210 to connect with the negative pressure mechanism 300, which is far from the operating table, thus improving the user experience of the auxiliary device.

[0057] Furthermore, the number of delivery pipes 212 can be flexibly adjusted according to the distance between the negative pressure mechanism 300 and the operating table, which will not be elaborated here.

[0058] Please see Figure 1In one embodiment, the auxiliary device for laparoscopic breast surgery further includes a puncture device, which includes a puncture needle and a needle hub. The puncture needle is connected to the needle hub, and the needle hub is located in the second through hole 120. The puncture needle is sequentially inserted through the second through hole 120 and the first through hole 110.

[0059] The puncture needle, mounted on the needle hub, can pass through the second through hole 120 and the first through hole 110 of the smoke shield 100 in sequence, and finally enter the patient's body through the incision. Subsequently, medical staff will insert the cutter into the incision through the needle hub and the puncture needle to cut the tissue inside the patient's body. This arrangement can avoid the cutter from frequently entering and exiting the incision and causing damage to the patient's body tissue, thus improving the surgical outcome.

[0060] Furthermore, the puncture needle has a first channel along its own axis, and the needle hub has a second channel that communicates with the first channel. Medical staff can insert the cutter into the incision through the second channel and the first channel in sequence to cut the tissue in the patient's body.

[0061] In one embodiment, the auxiliary device for endoscopic breast surgery further includes an incision protector. The incision protector includes a protector body, a first retaining ring, and a second retaining ring. The protector body is used to be fitted inside the incision. The first retaining ring is located at one end of the protector body, and the second retaining ring is located at the other end of the protector body. The first retaining ring is located in the first through hole 110 and is used to be located on the outer surface of the skin at the incision site. The second retaining ring is used to be located on the inner surface of the skin at the incision site.

[0062] The first and second retaining rings are respectively located at opposite ends of the protective sleeve body. The first retaining ring is used to be placed on the outer surface of the skin at the incision site, and the second retaining ring is used to be placed on the inner surface of the skin at the incision site, so as to fix the incision protective sleeve to the patient's incision site. The protective sleeve body can cover the wall of the incision and prevent external bacteria and other harmful substances from causing infection at the incision site.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An auxiliary device for endoscopic breast surgery, characterized in that, include: A smoke-blocking component, the smoke-blocking component having a first through hole, a second through hole and a third through hole, the first through hole being used to communicate with the incision of the surgical site, the second through hole communicating with the first through hole, the second through hole being used for inserting a cutter, and the third through hole communicating with the first through hole; The suction member has a suction channel, one end of which communicates with the third through hole; and A negative pressure mechanism is connected to the end of the suction channel away from the third through hole.

2. The auxiliary device for endoscopic breast surgery according to claim 1, characterized in that, The suction device includes a suction pipe, and the suction pipe is provided with the suction channel.

3. The auxiliary device for endoscopic breast surgery according to claim 2, characterized in that, The auxiliary device for endoscopic breast surgery also includes a flow regulator, which is located in the suction tubing and is used to control the flow area of ​​the suction channel.

4. The auxiliary device for endoscopic breast surgery according to claim 3, characterized in that, The flow regulating component includes an installation part and a pressure part. The installation part is disposed on the suction pipe, and the pressure part is movably disposed on the installation part. The pressure part is used to press against or move away from the outer wall of the suction pipe.

5. The auxiliary device for endoscopic breast surgery according to claim 4, characterized in that, The mounting part is provided with a mounting channel, which extends along a first direction of the mounting part. The inner wall of the mounting channel is provided with a mounting groove, which extends along a second direction of the mounting part. The second direction forms an angle with the first direction. The suction pipe passes through the mounting channel, and the pressure part is movably provided in the mounting groove.

6. The auxiliary device for endoscopic breast surgery according to claim 5, characterized in that, The installation part has an operation window, which is connected to the installation channel and extends along the first direction. The pressing part includes a pressing wheel, which passes through the operation window. One side of the pressing wheel has an installation protrusion, which is assembled with the installation groove so that the rim of the pressing wheel can press against or move away from the outer wall of the suction pipe.

7. The auxiliary device for endoscopic breast surgery according to claim 3, characterized in that, The flow regulating component includes a flow regulating valve.

8. The auxiliary device for endoscopic breast surgery according to claim 2, characterized in that, The suction pipeline includes at least two delivery pipes, each delivery pipe having a first end and a second end opposite to each other. The second end of one delivery pipe is connected to the first end of the other delivery pipe. The first end of the delivery pipe closest to the third through hole is connected to the third through hole, and the second end of the delivery pipe closest to the negative pressure mechanism is connected to the negative pressure mechanism.

9. The auxiliary device for endoscopic breast surgery according to claim 1, characterized in that, The auxiliary device for endoscopic breast surgery also includes a puncture device, which includes a puncture needle and a needle hub. The puncture needle is connected to the needle hub, and the needle hub is located in the second through hole. The puncture needle is sequentially inserted through the second through hole and the first through hole.

10. The auxiliary device for endoscopic breast surgery according to claim 1, characterized in that, The auxiliary device for endoscopic breast surgery also includes an incision protective sleeve, which includes a protective sleeve body, a first retaining ring, and a second retaining ring. The protective sleeve body is used to fit inside the incision. The first retaining ring is located at one end of the protective sleeve body, and the second retaining ring is located at the other end of the protective sleeve body. The first retaining ring is located at the first through hole and is used to be located on the outer surface of the skin at the incision. The second retaining ring is used to be located on the inner surface of the skin at the incision.

Images