A cutting device for removing solid specimens through natural abdominal cavity surgery

Abstract

The present invention discloses a cutting device for removing physical specimens through natural abdominal cavity surgery, which relates to the field of medical tools. The cutting device comprises: an outer shell, which is hollow inside; a cutting part, which is arranged inside the outer shell, and a cutting head capable of cutting the specimen is arranged at the front end of the cutting part. The specimen is cut by the cutting head of the cutting device described in this embodiment, and there is no need to crush the specimen in the specimen bag. The action is gentle and easy to control, and the specimen bag will not break, thereby preventing the specimen from leaking out. The technical problem of specimen tissue fragmentation and leakage caused by the need to crush the specimen when removing specimens exceeding the incision diameter through natural cavities in the prior art is solved, and the technical effect of safe, simple and efficient operation is achieved.

Description

Technical Field

[0001] The present application relates to the field of medical tools, and in particular to a cutting device for removing solid specimens through natural abdominal cavity surgery. Background Art

[0002] Surgical operations can cause trauma and surgical scars to patients. Doctors and patients hope to reduce trauma as much as possible while relieving the patient's pain, so that minimally invasive, scarless and painless surgery have become the development direction of surgical operations. Taking laparoscopic surgery as an example, laparoscopic minimally invasive surgery has gradually transitioned from the traditional four-hole method to the single-hole method through the natural cavity of the abdomen. The single-hole laparoscopic surgery through the natural cavity includes transumbilical and transvaginal surgery, that is, the abdominal wall is cut from the umbilicus or vaginal vault, and the instrument is inserted to complete diagnostic or radical treatment.

[0003] However, in single-port laparoscopic surgery through the natural orifice, the surgical entry diameter is small, and laparoscopic surgery has strict tumor-free principles. When removing tissue specimens that exceed the incision diameter (the incision diameter is generally 20 mm) through the natural orifice surgery (and the diameter of the removed tissue specimen is generally 20 to 100 mm, or even larger), the surgeon lacks a deep field of vision to monitor the operation process due to the influence of the specimen and the surgical incision. It is time-consuming and laborious to directly remove the removed specimen through the single-port natural orifice.

[0004] The existing solution is to use a specimen bag within the laparoscope to store the specimen and the blood and tissue fluid leaking from the specimen, and to crush the specimen within the specimen bag to prevent tumor cells from falling off and implanting on the surgical wound. However, due to the uniqueness of the surgical access path in single-port surgery through the natural cavity, the surgeon lacks a deep field of vision to monitor the operation process. During the specimen crushing process, the specimen bag is prone to rupture, causing the risk of specimen leakage or damage to organs around the incision and other iatrogenic damage, which is not safe enough.

[0005] Therefore, the prior art method of removing specimens with larger than incision diameters through natural cavity single-port surgery has at least the following technical problems: the specimen bag is prone to rupture, resulting in specimen tissue fragmentation and leakage. Summary of the invention

[0006] The embodiment of the present application provides a cutting device for removing physical specimens through natural abdominal cavity surgery, so as to solve the technical problem that the method of removing specimens exceeding the incision diameter through natural cavity in the prior art is prone to specimen bag rupture, resulting in specimen tissue fragmentation and leakage. The cutting device described in this embodiment is provided with a cutting head at the front end. After the specimen is removed and placed in the specimen bag, the cutting device is placed in the specimen bag and the cutting head is located at the bottom of the specimen. The power is turned on and the cutting device is pulled back. The cutting head will cut the specimens one by one, and the cut specimen strips will be pulled to the natural cavity opening for removal. When the specimen caliber is small enough to be directly removed from the natural cavity, the bag body can be directly removed through the natural cavity. The cutting device described in this embodiment is used to cut the specimen, and there is no need to crush the specimen in the specimen bag. The action is gentle and easy to control. The specimen bag will not rupture, so that the specimen will not leak out, achieving a safe, simple and efficient operation.

[0007] In order to solve the above problems, the present application provides a cutting device for removing a physical specimen through a natural abdominal cavity surgery, the cutting device comprising:

[0008] An outer shell, wherein the inner part of the outer shell is hollow;

[0009] The cutting part is arranged in the shell, and a cutting head capable of cutting the specimen is arranged at the front end of the cutting part.

[0010] Furthermore, the housing comprises:

[0011] handle;

[0012] A first fork, the rear end of which is connected to the handle, a pair of slide grooves are symmetrically arranged on the inner side wall of the first fork, and both of the slide grooves extend in the front-to-back direction.

[0013] The cutting part can be arranged in the shell so as to move forward and backward. The cutting part also includes a tool holder. The tool holder includes a second fork. The second fork is located in the first fork and is parallel to the first fork, and the second fork can be slidably arranged in the slide groove. The tool head is conductive, and the two ends of the tool head are fixed at the two ends of the second fork.

[0014] Furthermore, the cutting device further comprises a control unit, which controls the cutting unit to move forward and backward, and the control unit comprises:

[0015] A push groove, the push groove is arranged on the handle, the push groove extends in the front-rear direction, and the push groove is communicated with the interior of the handle;

[0016] A push rod, the push rod is slidably disposed in the handle, the front end of the push rod is fixedly connected to the rear end of the second fork, and the rear end of the push rod is exposed in the push groove;

[0017] A push button is slidably arranged in the push groove, and the lower surface of the push button is fixedly connected to the push rod, so that the cutting part is driven to move forward and backward through the push rod.

[0018] Furthermore, the cutting device further comprises a power connection part, and the power connection part comprises:

[0019] A plug, the plug is used to connect to a power source, the plug is located outside the housing, the plug is connected to one end of the cutter head through a first wire, and the first wire runs through the cutter holder, the push rod and the handle;

[0020] An electrode, the electrode is located outside the housing, the electrode is used to be inserted into the specimen to be cut, the electrode is connected to the other end of the cutter head through a second wire, and the second wire runs through the cutter holder, the push rod and the handle;

[0021] A switch is connected in series to the first conducting wire and is exposed on the handle.

[0022] Furthermore, protective frames are respectively provided on the outer sides of both ends of the first fork, and the protective frames can be rotatably set on the outer wall of the front end of the first fork. The outer edge of the protective frame is smooth, and the outer edge of the front end of the protective frame exceeds the blade head in the front-to-back direction.

[0023] Further, the protection frame is provided with a limiting mechanism for limiting the rotation angle, the limiting mechanism includes an axial hole and a rotating shaft, the rotating shaft is arranged on the outer side of the first fork, the axial hole is opened on the rear end of the protection frame, and the axial hole and the rotating shaft are parallel to the cutter head, and the protection frame is rotatably arranged on the rotating shaft;

[0024] Two first radial plates are arranged on the inner wall of the shaft hole at intervals, the outer ends of the first radial plates are fixed on the inner wall of the shaft hole, and the inner ends of the first radial plates extend along the radial direction of the shaft hole toward the center direction of the shaft hole;

[0025] A second radial plate is provided on the outer wall of the rotating shaft, the inner end of the second radial plate is fixed on the outer wall of the rotating shaft, and the outer end of the second radial plate extends in the radial direction of the rotating shaft toward the outside of the rotating shaft;

[0026] The sum of the radial length of the first radial plate along the axial hole and the radial length of the second radial plate along the rotating shaft is greater than the radial distance between the axial hole and the rotating shaft, so that the first radial plate rotates between the two second radial plates to limit the rotation angle of the rotating shaft.

[0027] Furthermore, the cutter head is a tungsten alloy wire, and the tungsten alloy wire is tensioned and fixed on the second fork.

[0028] Furthermore, the front end of the first fork extends forward and bends downward, and the second fork extends forward and bends downward.

[0029] Furthermore, a line connecting the front end and the rear end of the first fork forms a first line, and the angle between the first line and the horizontal line is 30°; a line connecting the front end and the rear end of the second fork forms a second line, and the angle between the second line and the horizontal line is 30°.

[0030] Furthermore, the upper and lower surfaces of the rear end of the first fork are paved with protective plates, and the protective plates and the first fork enclose a protective space. When the cutter head slides to the rear end of the slide groove, it is located in the protective space.

[0031] The above one or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:

[0032] 1. The cutting device described in this embodiment is provided with a cutting head at the front end. After the specimen is removed and placed in the specimen bag, the cutting device is placed in the specimen bag and the cutting head is located at the bottom of the specimen. The power is turned on and the cutting device is pulled backward. The cutting head will cut the specimens one by one and pull the cut specimens to the opening of the natural cavity for removal. When the specimen opening is small enough to be directly taken out from the natural cavity, the bag body can be directly taken out through the natural cavity. The cutting device described in this embodiment is used to cut the specimens, and there is no need to crush the specimens in the specimen bag, and the action is gentle and easy to control. The specimen bag will not rupture, thereby preventing the specimen from leaking out. The technical problem in the prior art that specimens exceeding the incision diameter need to be crushed when taken out through the natural cavity, which causes the specimen bag to rupture easily, thereby causing the specimen tissue to break and leak, is solved. The specimen removal efficiency is improved, and the operation time is significantly reduced. Tumor tissue is taken out of the specimen bag, which well protects the specimen bag from rupture, preventing the specimen tumor tissue from falling off and implanting. In natural cavity surgery, the visual blind spot caused by the only surgical path is solved, and complications of organ damage near the incision caused by improper operation are avoided, achieving a technical effect of safe, simple and efficient operation.

[0033] 2. When inserting the cutting device into the bag, slide the cutter head to the rear end of the slide slot to avoid damage to the cutter head. When cutting specimens, slide the cutter head to the front end of the slide slot, which can effectively protect the cutter head.

[0034] 3. The control unit can be used to manually control the sliding of the cutter head. Before inserting the cutting device into the bag body, push the push button backwards so that the push button slides along the push groove to the rear end of the push groove, thereby causing the cutter head to slide to the rear end of the slide groove to avoid damage to the cutter head. Before cutting the specimen, push the push button forward so that the push button slides along the push groove to the front end of the push groove, thereby causing the cutter head to slide to the front end of the slide groove for cutting, which can effectively protect the cutter head. The control unit has the advantages of being easy to operate and control.

[0035] 4. Insert the electrode on the specimen to be cut, plug in the power supply, press the switch, the electrode and the cutter head are energized, the cutter head generates heat after being energized, and the specimen can be cut more easily.

[0036] 5. The protection frame can prop open the inner wall of the specimen bag and the cutter head, so that there is a gap between the specimen bag and the cutter head, thereby preventing the cutter head from melting the specimen bag.

[0037] 6. The cutter head is made of alloy tungsten wire, which has high strength, high resistance, and high heat generation after being powered on, making it easier to cut the specimen.

[0038] 7. The outer surface of the specimen is generally an arc-shaped surface or a spherical surface. The first fork and the second fork are curved to facilitate fitting with the specimen, thereby facilitating cutting of the specimen layer by layer.

[0039] 8. The first fork and the second fork are both U-shaped forks with smooth outer edges, which are not easy to damage the specimen bag.

[0040] 9. When the cutting device is inserted into the specimen bag, the push button is pushed back to the rear end of the push groove, and the cutter head is located in the protective space, so that the cutter head is not easily damaged during the process of exploring the bottom of the specimen bag.

[0041] 10. The limiting mechanism can limit the rotation angle of the protective frame. The heat generated by the blade head after being powered on may melt the specimen bag. The protective frame can prop open the inner wall of the specimen bag and the blade head, so that there is a gap between the specimen bag and the blade head, thereby preventing the blade head from melting the specimen bag. The above description is only an overview of the technical solution of this application. In order to more clearly understand the technical means of this application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of this application more obvious and easy to understand, the specific implementation methods of this application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of a cutting device used for removing a physical specimen through a natural abdominal cavity surgery in an embodiment of the present invention;

[0043] Figure 2 It is a top view of a cutting device for removing a solid specimen through natural orifice abdominal surgery in an embodiment of the present invention;

[0044] Figure 3 It is a structural schematic diagram of the front end of a cutting device used for removing a physical specimen through a natural abdominal cavity surgery in an embodiment of the present invention;

[0045] Figure 4 A top view of a tool holder according to an embodiment of the present invention;

[0046] Figure 5 It is a schematic structural diagram of a cutting device for removing a solid specimen through a natural orifice abdominal surgery when the protection frame in an embodiment of the present invention is located at a first position (entering into a specimen bag);

[0047] Figure 6 It is a schematic structural diagram of a cutting device for removing a physical specimen through a natural orifice abdominal surgery when the protection frame is located at the second position (cutting specimen) in an embodiment of the present invention;

[0048] Figure 7 The present invention is a schematic structural diagram of a limiting mechanism of a cutting device for removing a solid specimen through natural orifice abdominal surgery in an embodiment of the present invention.

[0049] Explanation of the accompanying drawings: housing 10, handle 11, first fork 12, slide groove 13, push groove 14, protection plate 15, cutting part 20, cutter head 21, push rod 22, second fork 23, push button 24, power connection part 30, first wire 31, plug 32, second wire 33, electrode 34, switch 35, protection frame 41, shaft hole 42, rotating shaft 43, first radial plate 44, second radial plate 45, limiting mechanism 46, radial plug 47. DETAILED DESCRIPTION

[0050] The embodiment of the present application provides a cutting device for extracting physical specimens through natural abdominal cavity surgery, so as to solve the technical problem that the specimen bag is prone to rupture and cause specimen tissue to break and leak in the existing method of extracting specimens exceeding the incision diameter through natural cavity. In order to solve the above technical problems, the overall idea of ​​the technical solution provided by the present application is as follows:

[0051] The cutting device described in this embodiment is provided with a cutting head at the front end. After the specimen is removed and placed in the specimen bag, the cutting device is placed in the specimen bag and the cutting head is located at the bottom of the specimen. The power is turned on and the cutting device is pulled backward. The cutting head will cut the specimens one by one and pull the cut specimens to the natural cavity opening for removal. When the specimen diameter is small enough to be directly taken out from the natural cavity, the bag body can be directly taken out through the natural cavity. The cutting device described in this embodiment is used to cut the specimen, and there is no need to crush the specimen in the specimen bag. The action is gentle and easy to control. The specimen bag will not rupture, thereby preventing the specimen from leaking out. This solves the technical problem in the prior art that specimens exceeding the incision diameter taken out through the natural cavity are easily ruptured due to the need to crush the specimen, thereby causing the specimen tissue to break and leak. This achieves the technical effect of safe, simple and efficient operation.

[0052] The technical solution of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations on the technical solution of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0053] Figure 1 FIG. 1 is a schematic diagram of the structure of a cutting device for removing a physical specimen through a natural abdominal cavity surgical passage according to an embodiment of the present invention, wherein the natural abdominal cavity passage is through the umbilicus or vagina. Figure 1 As shown, the cutting device comprises a shell 10 and a cutting part 20. The shell 10 is hollow inside, the cutting part 20 is arranged in the shell 10, and a cutting head 21 capable of cutting specimens is provided at the front end of the cutting part 20.

[0054] It should be noted that, in this embodiment, Figure 1 The left end is the front end (towards the patient), Figure 1The right end is the rear (towards the operator), and the use of the front and rear directions is only for the convenience of description and is not a limitation of the technical solution of the present invention. The cutting device described in this embodiment is provided with a cutter head 21 located at the front end. After the specimen is removed and placed in the specimen bag, the cutting device is placed in the specimen bag, and the cutter head 21 is located at the bottom of the specimen. Then the cutting device is pulled backward, and the cutter head 21 will cut the specimens one by one (the blade of the cutter head faces the shell), and the cut specimen strips are pulled to the natural cavity opening for removal. When the specimen diameter is small enough to be directly removed from the natural cavity, the bag body can be directly removed through the natural cavity. When the specimen is cut by the cutting device described in this embodiment, there is no need to crush the specimen in the specimen bag, and the action is gentle and easy to control. The specimen bag will not break, so the specimen will not leak out, which solves the technical problem of tissue fragmentation and leakage caused by the need to crush the specimen when taking out specimens exceeding the incision diameter through natural cavities in the prior art, and improves the efficiency of specimen removal, significantly reduces the operation time, and takes out tumor tissue in the specimen bag, which well protects the specimen bag from breaking, and will not cause the specimen tumor tissue to fall off and implant; in natural cavity surgery, it solves the visual blind spot caused by the only surgical path, avoids complications of organ damage near the incision caused by improper operation, and achieves the technical effect of safe, simple and efficient operation. In the prior art, in the process of specimen removal through natural cavity single-port surgery, electroresection, sharp resection and other methods are conventionally used to crush the specimen tissue, which poses a risk of organ damage around the incision. The cutting device described in this embodiment achieves safe operation.

[0055] In the prior art, specimen removal is time-consuming and labor-intensive. The cutting device described in this embodiment improves specimen removal efficiency and significantly reduces operation time.

[0056] In the prior art, during the process of crushing and removing the specimen, the specimen bag is prone to rupture, causing the specimen tissue or tissue fluid to leak out, further leading to iatrogenic tumor implantation. The cutting device described in this embodiment will not damage the specimen bag, and the specimen tissue or tissue fluid will not leak out, which will not cause the specimen tumor tissue to fall off and implant. It is safe and efficient.

[0057] In the prior art, there is a defect in natural orifice surgery that the only surgical path causes a visual blind spot. The cutting device described in this embodiment solves the visual blind spot caused by the only surgical path, and can effectively avoid complications of damage to organs near the incision due to improper operation.

[0058] exist Figure 1 and Figure 2 In the embodiment described, the housing 10 includes a handle 11 and a first fork 12, and the rear end of the first fork 12 is connected to the handle 11. Figure 3As shown, a pair of slide grooves 13 are symmetrically arranged on the inner side wall of the first fork 12, and the slide grooves 13 extend in the front-to-back direction. The cutting part 20 is arranged in the housing 10 so as to be movable forward and backward. Figure 4 As shown, the cutting portion 20 also includes a tool holder, and the tool holder includes a second fork 23. The second fork 23 is located in the first fork 12 and parallel to the first fork 12, and the second fork 23 is slidably disposed in the slide groove 13; the tool head 21 is conductive, and the two ends of the tool head 21 are fixed at the two ends of the second fork 23.

[0059] Specifically, when the cutting device is inserted into the bag, the cutter head 21 is slid to the rear end of the chute 13 to avoid damage to the cutter head 21. When cutting a specimen, the cutter head 21 can be slid to the front end of the chute 13, which can effectively protect the cutter head 21.

[0060] exist Figure 1 , 2 In the embodiment described in 4, the cutting device also includes a control unit, which controls the cutting unit 20 to move forward and backward, and the control unit includes a push groove 14, a push rod 22 and a push button 24. The push groove 14 is arranged on the handle 11, and the push groove 14 extends along the front and rear direction, and the push groove 14 is connected to the interior of the handle 11; the push rod 22 can be slidably arranged in the handle 11, the front end of the push rod 22 is fixedly connected to the rear end of the second fork 23, and the rear end of the push rod 22 is exposed in the push groove 14; the push button 24 can be slidably arranged in the push groove 14, and the lower surface of the push button 24 is fixedly connected to the push rod 22 to move the push rod 22 forward and backward.

[0061] Specifically, slideways are provided on both sides of the push groove 14, and the slideways extend along the length direction of the push groove 14. Slide blocks are provided on both sides of the push button 24, and the slide blocks can be slidably clamped in the slideways. When in use, the push button 24 is pushed by hand to slide in the front-back direction, so as to push the push rod 22 to slide in the front-back direction. The control unit can manually control the sliding of the cutter head 21. Before the cutting device is inserted into the bag body, the push button 24 is pushed backward so that the push button 24 slides along the push groove 14 to the rear end of the push groove 14, so that the cutter head slides to the rear end of the slide groove 13 to avoid damage to the cutter head 21. Before cutting the specimen, the push button 24 is pushed forward so that the push button 24 slides along the push groove 14 to the front end of the push groove 14, so that the cutter head 21 slides to the front end of the slide groove 13 for cutting, which can effectively protect the cutter head 21. The control unit has the advantages of convenient operation and easy control.

[0062] exist Figure 1 In the described embodiment, the cutting device also includes a power connection part 30, which includes a plug 32, an electrode 34 and a switch 35. The plug 32 is used to connect to a power source, and the plug 32 is located outside the housing 10. The plug 32 is connected to one end of the cutter head 21 through a first wire 31, and the first wire 31 passes through the tool holder, the push rod 22 and the handle 11; the electrode 34 is located outside the housing 10, and the electrode 34 is used to be inserted into the specimen to be cut, and the electrode 34 is connected to the other end of the cutter head 21 through a second wire 33, and the second wire 33 passes through the tool holder, the push rod 22 and the handle 11; the switch 35 is connected in series to the first wire 31, and the switch 35 is exposed on the handle 11.

[0063] Specifically, when in use, the electrode 34 is first inserted into the physical specimen to be cut, and after the plug 32 is plugged into the power supply (220V), the switch 35 is pressed, and the electrode 34 and the cutter head 21 are both energized. After the cutter head 21 is energized, it generates heat, and the specimen can be cut more easily.

[0064] exist Figure 1 , 3 In the described embodiment, a protective frame 41 is provided on the described shell 10 to prevent the described blade head 21 from scratching. A protective frame 41 is provided on the outer sides of both ends of the first fork 12 respectively. The described protective frame 41 can be rotatably set on the outer wall of the front end of the first fork 12. The outer edge of the described protective frame 41 is smooth, and the outer edge of the front end of the described protective frame 41 exceeds the described blade head 21 along the front-to-back direction.

[0065] Specifically, no matter where the cutter head 21 is in the chute 13, the protection frame 41 is above the cutter head 21, and the protection frame can separate the cutter head 21 from the inner wall of the specimen bag at the front end of the cutter head 21. Figure 5 As shown, the protection frame 41 is turned backwards under the obstruction of the specimen bag wall; when cutting the specimen, the state of the protection frame 41 is as follows Figure 6 As shown, the protection frame 41 can always separate the cutter head 21, prop up the inner wall of the specimen bag and the cutter head 21, so that there is a gap between the specimen bag and the cutter head 21, so as to prevent the cutter head 21 from generating heat and melting the specimen bag after being powered on.

[0066] exist Figure 1 In the embodiment, the cutter head 21 is a tungsten alloy wire (such as molybdenum-tungsten alloy), and the tungsten alloy wire is tensioned and fixed on the second fork 23. Specifically, the tungsten alloy wire has high strength, high resistance, and high heat generation after being energized, and is very suitable as a cutter head.

[0067] exist Figure 7 In the embodiment described, the protection frame 41 is provided with a limiting mechanism for limiting the rotation angle, and the limiting mechanism includes an axial hole 42 and a rotating shaft 43, and the rotating shaft 43 is arranged on the outer side of the first fork 12, and the axial hole 42 is opened on the rear end of the protection frame 41, and the axial hole 42 and the rotating shaft 43 are parallel to the cutter head 21, and the protection frame 41 is rotatably arranged on the rotating shaft 43; two first radial plates 44 are spaced apart on the inner wall of the axial hole 42, and the outer end of the first radial plate 44 is fixed on the inner wall of the axial hole 42, and the inner end of the first radial plate 44 is along the axial hole 4 2 extends radially toward the center direction of the shaft hole 42; a second radial plate 45 is provided on the outer wall of the rotating shaft 43, the inner end of the second radial plate 45 is fixed to the outer wall of the rotating shaft 43, and the outer end of the second radial plate extends radially toward the outside of the rotating shaft 43 along the radial direction of the rotating shaft 43; the sum of the radial length of the first radial plate 44 along the shaft hole 42 and the radial length of the second radial plate 45 along the shaft 43 is greater than the radial distance between the shaft hole 42 and the rotating shaft 43, so that the first radial plate 44 rotates between the two second radial plates 45 to limit the rotation angle of the rotating shaft 43.

[0068] Specifically, the angular distance between the two first radial plates 44 is the rotation range of the protection frame 41. By adjusting the angular distance between the two first radial plates 44, the movement trajectory of the protection frame 41 is adapted to the cutting of the cutter head 21. Both ends of the rotating shaft 43 are provided with radial plugs 47 to prevent the rotating shaft 43 from slipping out of the shaft hole 42. The radial plugs 47 are fixed on the end surface of the rotating shaft 43.

[0069] Specifically, the protection frame 41 is in the form of a sheet. The outer contour of the protection frame 41 is a smooth curve. The protection frame 41 includes a large end and a pointed end, and the shaft hole 42 is opened on the large end. When the cutting device is inserted into the bottom of the specimen in the specimen bag, the protection frame 41 is located in the first position, such as Figure 5 As shown, after the protection frame 41 reaches the bottom of the specimen bag, the protection frame 41 starts to cut the specimen and is located at the second position, such as Figure 6 shown.

[0070] exist Figure 1 In the embodiment, the front end of the first fork 12 extends forward and bends downward. In the embodiment, the front end and the rear end of the first fork 12 form a first line, and the angle between the first line and the horizontal line is 30°. The second fork 23 extends forward and bends downward. In the embodiment, the front end and the rear end of the second fork 23 form a second line, and the angle between the second line and the horizontal line is 30°.

[0071] Specifically, the outer surface of the specimen is generally an arc-shaped surface or a spherical surface, and the first fork 12 and the second fork 23 are curved to facilitate fitting with the specimen, thereby cutting the specimen layer by layer.

[0072] exist Figure 1 In the embodiment described, the first fork 12 is a U-shaped fork. Figure 4 In the embodiment, the second fork 23 is a U-shaped fork. Specifically, the outer edges of the U-shaped forks are smooth and are not easy to damage the specimen bag.

[0073] exist Figure 2 , 3 In the described embodiment, the upper and lower surfaces of the rear end of the first fork 12 are paved with protective plates 15, and the protective plates 15 and the first fork 12 enclose a protective space, and the blade head 21 is located in the protective space when it slides to the rear end of the slide groove 13.

[0074] Specifically, when the cutting device is inserted into the specimen bag, the push button 24 is pushed back to the rear end of the push groove 14, and the cutter head 21 is located in the protective space, so that the cutter head 21 is not easily damaged when it explores the bottom of the specimen in the specimen bag and extends to the bottom of the specimen.

[0075] The steps for using the cutting device for removing solid specimens through natural orifice abdominal surgery described in this embodiment are as follows:

[0076] (1) placing the specimen into a specimen bag, and pulling the mouth of the specimen bag to the skin or the entrance of a natural cavity;

[0077] (2) Insert the electrode 34 into the specimen, connect the plug 32 to the power source, and adjust the power;

[0078] (3) Push the push button 24 backward so that the cutter head 21 is located at the rear end of the slide groove 13 and in the protection space, and the protection frame 41 is located at the first position;

[0079] (4) extending the cutting device along the edge of the specimen bag into the bottom of the specimen;

[0080] (5) Push the push button 24 forward so that the cutter head 21 is located at the front end of the slide groove 13;

[0081] (6) Press the switch 35 and pull the handle 11 backward at a constant speed. The protection frame 41 is located at the second position. The blade 21 cuts the next specimen from the bottom of the specimen to the exit of the natural cavity, and the cut specimen is taken out from the exit of the natural cavity with tweezers.

[0082] (7) Repeat steps (3) to (6), cutting the specimen strip by strip, until the specimen becomes thin enough to be removed directly from the natural cavity.

[0083] The cutting device for removing solid specimens through natural abdominal cavity surgery described in the embodiments of the present application has at least one or more of the following technical effects:

[0084] 1. The cutting device described in this embodiment is provided with a cutter head 21 at the front end. After the specimen is removed and placed in the specimen bag, the cutting device is placed in the specimen bag, and the cutter head 21 is located at the bottom of the specimen. Then the cutting device is pulled backward, and the cutter head 21 will cut the specimens one by one, and the cut specimens are pulled to the opening of the natural cavity for removal. When the specimen diameter is small enough to be directly taken out from the natural cavity, the bag body can be directly taken out through the natural cavity. The cutting device described in this embodiment is used to cut the specimen, and there is no need to crush the specimen in the specimen bag. The movement is gentle and easy to control, and the specimen bag will not rupture, thereby preventing the specimen from leaking out. The technical problem of specimen tissue fragmentation and leakage caused by the need to crush the specimen when taking out specimens exceeding the incision diameter through the natural cavity in the prior art is solved, and the specimen taking out efficiency is improved, and the operation time is significantly reduced. Tumor tissue is taken out of the specimen bag, which well protects the specimen bag from rupture and prevents the specimen tumor tissue from falling off and implanting. In natural cavity surgery, the visual blind spot caused by the only surgical path is solved, and complications of organ damage near the incision caused by improper operation are avoided, achieving a technical effect of safe, simple and efficient operation.

[0085] 2. When inserting the cutting device into the bag, slide the cutter head 21 to the rear end of the slide groove 13 to avoid damage to the cutter head 21. When cutting specimens, slide the cutter head 21 to the front end of the slide groove 13, which can effectively protect the cutter head.

[0086] 3. The control unit can be used to manually control the sliding of the cutter head 21. Before inserting the cutting device into the bag, push the push button 24 backward to slide the push button 24 along the push groove 14 to the rearmost of the push groove 14, so that the cutter head 21 slides to the rear end of the slide groove 13 to avoid damage to the cutter head 21. Before cutting the specimen, push the push button 24 forward to slide the push button 24 along the push groove 14 to the frontmost of the push groove 14, so that the cutter head 21 slides to the front end of the slide groove 13 for cutting, which can effectively protect the cutter head 21. The control unit has the advantages of convenient operation and easy control.

[0087] 4. Insert the electrode 34 on the specimen to be cut, plug the plug 32 into the power source, press the switch 35, the electrode 34 and the cutter head 21 are both energized, and the cutter head 21 generates heat after being energized, so that the specimen can be cut more easily.

[0088] 5. The protection frame 41 can prop open the inner wall of the specimen bag and the cutter head 21, so that there is a gap between the specimen bag and the cutter head 21, thereby preventing the cutter head 21 from melting the specimen bag.

[0089] 6. The cutter head 21 is a tungsten alloy wire with high strength, high resistance, and high heat generation after being powered on, so that the specimen can be cut more easily.

[0090] 7. The outer surface of the specimen is generally an arc-shaped surface or a spherical surface. The first fork 12 and the second fork 23 are curved to facilitate fitting with the specimen, thereby facilitating cutting of the specimen layer by layer.

[0091] 8. The first fork 12 and the second fork 23 are both U-shaped forks with smooth outer edges, which are not easy to damage the specimen bag.

[0092] 9. When the cutting device is inserted into the specimen bag, the push button 24 is pushed back to the rear end of the push groove 14, and the cutter head 21 is located in the protective space, so that the cutter head 21 is not easily damaged during the process of exploring the bottom of the specimen bag.

[0093] 10. The limiting mechanism can limit the rotation angle of the protective frame. The heat generated by the cutter head 21 after being powered on may melt the specimen bag. The protective frame 41 can prop open the inner wall of the specimen bag and the cutter head 21, so that there is a gap between the specimen bag and the cutter head 21, thereby preventing the cutter head 21 from melting the specimen bag.

[0094] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to examples, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A cutting device for removing solid specimens through natural abdominal cavity surgery, characterized in that: The cutting device comprises: An outer shell, wherein the inner part of the outer shell is hollow; A cutting part, wherein the cutting part is arranged in the housing, and a cutting head capable of cutting the specimen is arranged at the front end of the cutting part, and the cutting head can cut the specimen one by one; The outer shell is provided with a protection frame to prevent the knife head from damaging the specimen bag.

2. A cutting device for removing solid specimens through natural orifice abdominal surgery as claimed in claim 1, characterized in that: The housing comprises: handle; A first fork, the rear end of which is connected to the handle, a pair of slide grooves being symmetrically arranged on the inner side wall of the first fork, and both of which extend in the front-rear direction; The cutting part can be arranged in the shell so as to move forward and backward. The cutting part also includes a tool holder. The tool holder includes a second fork. The second fork is located in the first fork and is parallel to the first fork, and the second fork can be slidably arranged in the slide groove. The tool head is conductive, and the two ends of the tool head are fixed at the two ends of the second fork.

3. A cutting device for removing solid specimens through natural orifice abdominal surgery as claimed in claim 2, characterized in that: The cutting device further comprises a control unit, which controls the cutting unit to move forward and backward, and the control unit comprises: A push groove, the push groove is arranged on the handle, the push groove extends in the front-rear direction, and the push groove is communicated with the interior of the handle; A push rod, the push rod is slidably disposed in the handle, the front end of the push rod is fixedly connected to the rear end of the second fork, and the rear end of the push rod is exposed in the push groove; A push button is slidably arranged in the push groove, and the lower surface of the push button is fixedly connected to the push rod, so that the cutting part is driven to move forward and backward through the push rod.

4. A cutting device for removing solid specimens through natural orifice abdominal surgery as claimed in claim 3, characterized in that: The cutting device further comprises a power connection part, and the power connection part comprises: A plug, the plug is used to connect to a power source, the plug is located outside the housing, the plug is connected to one end of the cutter head through a first wire, and the first wire runs through the cutter holder, the push rod and the handle; An electrode, the electrode is located outside the housing, the electrode is used to be inserted into the specimen to be cut, the electrode is connected to the other end of the cutter head through a second wire, and the second wire runs through the cutter holder, the push rod and the handle; A switch is connected in series to the first conducting wire and is exposed on the handle.

5. A cutting device for removing solid specimens through natural orifice abdominal surgery as claimed in claim 4, characterized in that: Protection frames are respectively provided on the outer sides of both ends of the first fork, and the protection frames can be rotatably arranged on the outer wall of the front end of the first fork. The outer edge of the protection frame is smooth, and the outer edge of the front end of the protection frame exceeds the blade head along the front-rear direction.

6. A cutting device for removing solid specimens through natural orifice abdominal surgery as claimed in claim 5, characterized in that: The protection frame is provided with a limiting mechanism for limiting the rotation angle, the limiting mechanism includes an axial hole and a rotating shaft, the rotating shaft is arranged on the outer side of the first fork, the axial hole is opened on the rear end of the protection frame, and the axial hole and the rotating shaft are parallel to the cutter head, and the protection frame is rotatably arranged on the rotating shaft; Two first radial plates are arranged on the inner wall of the shaft hole at intervals, the outer ends of the first radial plates are fixed on the inner wall of the shaft hole, and the inner ends of the first radial plates extend along the radial direction of the shaft hole toward the center direction of the shaft hole; A second radial plate is provided on the outer wall of the rotating shaft, the inner end of the second radial plate is fixed on the outer wall of the rotating shaft, and the outer end of the second radial plate extends in the radial direction of the rotating shaft toward the outside of the rotating shaft; The sum of the radial length of the first radial plate along the axial hole and the radial length of the second radial plate along the rotating shaft is greater than the radial distance between the axial hole and the rotating shaft, so that the first radial plate rotates between the two second radial plates to limit the rotation angle of the rotating shaft.

7. A cutting device for removing solid specimens through natural orifice abdominal surgery as claimed in claim 2, characterized in that: The cutter head is a tungsten alloy wire, and the tungsten alloy wire is tensioned and fixed on the second fork.

8. The cutting device for removing solid specimens through natural orifice abdominal surgery as claimed in claim 2, characterized in that: The front end of the first fork extends forward and bends downward, and the second fork extends forward and bends downward.

9. A cutting device for removing solid specimens through natural orifice abdominal surgery as claimed in claim 8, characterized in that: A line connecting the front end and the rear end of the first fork forms a first line, and an angle between the first line and the horizontal line is 30°; a line connecting the front end and the rear end of the second fork forms a second line, and an angle between the second line and the horizontal line is 30°.

10. The cutting device for removing solid specimens through natural orifice abdominal surgery as claimed in claim 2, characterized in that: The upper and lower surfaces of the rear end of the first fork are paved with protection plates, and the protection plates and the first fork enclose a protection space. When the cutter head slides to the rear end of the slide groove, it is located in the protection space.

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