Minimally invasive sampling device for medical oncology
By designing a minimally invasive sampling device for oncology that uses cutting knife rotation to achieve section sampling, the problems of small sample area, complex operation and slow wound recovery of traditional sampling devices are solved, and efficient and accurate sampling and rapid healing are achieved.
Patent Information
- Application Number
- CN202411806262.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-02-28
AI Technical Summary
During the sampling process, traditional endoscopic sampling devices have problems such as small sample area, complex operation, slow wound recovery and high sampling points requirements, which lead to failure in sampling or repeated sampling, which increases the pain of patients and the burden on medical staff.
A minimally invasive sampling device for oncology is designed, and slice sampling is achieved by rotating a cutting knife. The cutting knife is equipped with a cutting groove and a cutting edge. By rotating the cutting knife from the blade groove, the cutting knife can be cut within one rotation, and the sampling head is fixed through the airbag to ensure the stability and accuracy of the sampling head.
The sampling speed and sample area are improved, the section quality is ensured, the risk of wound infection is reduced, the wound healing process is accelerated, the patient's discomfort is reduced, and the operation process is simplified.
Smart Images
Figure CN119523538A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, and in particular to a minimally invasive sampling device for oncology. Background Art
[0002] In the medical field, endoscopic sampling devices are mainly used to obtain tissue samples from patients during endoscopic examinations for pathological analysis and diagnosis. Such devices usually consist of a small sampling head and an endoscopic catheter. The sampling head is sent to the target site through the endoscopic catheter, and then tissue samples are obtained using different mechanisms (such as clamping, rotary cutting, suction, etc.).
[0003] Although the existing endoscopic sampling devices meet clinical needs to a certain extent, in actual use, traditional sampling devices still have some shortcomings: For example, traditional capsule-shaped clamping sampling devices can usually only clamp smaller tissue samples, and multiple operations are required to complete large-area sampling, which increases the sampling time and operation complexity. In addition, the wound surface removed in this way is also a capsule-shaped structure, the wound is hollow and recovers slowly, and the patient feels obvious discomfort. In particular, this type of sampling device has a small sampling area, and the observable wound volume will also become smaller. This places high demands on the sampling points, and repeated or multiple sampling is prone to occur.
[0004] Furthermore, during the sampling process, due to the slippery sampling point or the instability of the tissue, the traditional sampling device is prone to sampling failure or the need for repeated sampling, which increases the pain of the patient and the workload of the medical staff.
[0005] To address the above issues, we have launched a minimally invasive sampling device for oncology. Summary of the invention
[0006] The invention discloses a minimally invasive sampling device for oncology, aiming to solve the technical problems in the background technology.
[0007] In order to achieve the above object, the present invention adopts the following technical solutions: A minimally invasive sampling device for oncology, comprising a sampling head, the sampling head comprising a first shell and a second shell, the first shell and the second shell are configured to have the same shape and one end of the first shell and the second shell is configured to have a hemispherical structure, the first shell and the second shell are configured to have a hollow structure, and a blade groove is provided between one end of the first shell and the second shell; A connecting rod is fixedly connected to one side of the first shell and the second shell where they are close to each other, a rotating rod is fixedly connected between the outer sides of the two connecting rods, a torsion spring is connected to the outer side of the connecting rod and the inside of the rotating rod, a cutting knife is fixedly connected to the outer side of the rotating rod, the cutting knife is arranged in an arc structure and is eccentrically connected to the rotating rod, a cutting groove is provided inside the cutting knife, the cutting knife and the corners outside the cutting groove are provided with cutting edges, and a limiting notch is provided on the cutting knife.
[0008] In a preferred solution, sleeves are fixedly connected to the outer side of the rotating rod and located on both sides of the cutting knife, and pull ropes are wound around the outer sides of the sleeves, and the two pull ropes are symmetrically arranged.
[0009] In a preferred embodiment, two mounting rods are fixedly connected to the interior of the second shell, one of the mounting rods is fixedly connected to an upper fixing frame, and the other mounting rod is fixedly connected to a reinforcement frame, and both of the pull ropes pass through the upper fixing frame and the reinforcement frame and extend to the outside of the reinforcement frame and are fixedly connected to a connection interface.
[0010] In a preferred solution, a sleeve is fixedly connected between the upper fixing frame and the reinforcement frame, a slider is slidably connected to the interior of the sleeve, a telescopic rod is fixedly connected to one side of the slider, one end of the telescopic rod extends to the outside of the sleeve and is fixedly connected to a limiting block, the limiting block is used in conjunction with the limiting notch, and a first spring is fixedly connected to the interior of the sleeve and between the limiting block and the inner wall of the sleeve.
[0011] In a preferred solution, the first shell and the second shell are both provided with installation grooves, and airbags are fixedly connected to the installation grooves. The first shell and the second shell are both provided with guide grooves, and air pipes are fixedly connected to the airbags. The air pipes are hollowed out from the corresponding guide grooves and extend to the outside of the corresponding shells.
[0012] In a preferred solution, two mounting holes are provided on the first shell, screws are provided inside the mounting holes, the screws are threadedly connected to corresponding mounting rods, and the first shell is connected to the second shell by connecting the screws to the mounting rods.
[0013] In a preferred embodiment, one end of the first shell and the second shell are fixedly connected to a connecting arc plate, and the two connecting arc plates are combined to form a circular structure. The outer sides of the two connecting arc plates are wrapped with a catheter, and the catheter includes a tube body, and two wrapping strips are fixedly connected to the tube body. The air pipes extend to the other end of the tube body through the corresponding wrapping strips and are fixedly connected to a pressure bag.
[0014] In a preferred solution, a sliding column is slidably connected to the inside of one end of the tube body, the top of the sliding column extends to the outside of the tube body and is fixedly connected to a connecting plate, the inside of the tube body is fixedly connected to a fixing plate, the top of the fixing plate is fixedly connected to a fixing column, and the top of the fixing column penetrates to the top of the sliding column and the connecting plate and is fixedly connected to a top plate.
[0015] In a preferred solution, the top plate and the connecting plate are both provided with extension rods, and a second spring is sleeved on the outside of the fixing column and between the connecting plate and the top plate.
[0016] In a preferred solution, a connecting rope is fixedly connected to the bottom of the sliding column, and one end of the connecting rope is connected to the connecting interface.
[0017] The minimally invasive sampling device for oncology provided by the present invention has the following advantages: 1. The device realizes slice sampling by rotating the cutting knife. A cutting groove is provided inside the cutting knife, and the edges and corners of the cutting knife are provided with cutting edges. This non-concentric structural design enables the cutting knife to rotate out of the outside of the first shell and the second shell through the cutting groove when rotating, and rotate back into the shell through the cutting groove after cutting is completed to achieve resetting. Since the cutting knife rotates in a circular shape, the tissue cutting can be completed within one rotation. Such a design not only improves the sampling speed, but also ensures that the sampling area is large enough, the thickness is thin enough, and the slice quality is higher. Compared with the traditional capsule-shaped clamping sampling, the sampling sample of this device is larger in area, but the wound is narrower, so that the recovery speed can be faster. This can not only increase the effective inspection area, but also effectively reduce the patient's discomfort, reduce the risk of wound infection, and accelerate the healing process of the wound.
[0018] 2. The present invention can effectively fix the sampling head in the patient's body by setting up an airbag. Specifically, when the sampling head is inserted into the patient's body, the airbag can inflate and contact the inner wall of the intestine, thereby avoiding the problem that the traditional sampling device is difficult to cut and sample or requires repeated sampling due to the slippery sampling point. In addition, the position of the sampling head can be fine-tuned by adjusting the pressure of the airbags on both sides, so as to achieve more accurate sampling position adjustment and fixation.
[0019] 3. The overall structure of the present invention is simple, easy to use, and has low mass production cost. These features make it suitable for promotion and use as a disposable medical product. By simply pulling the connecting plate, the rotation of the cutting knife and the cutting and sampling of the tissue can be realized, which is easy and efficient to operate. At the same time, the fixing function of the airbag and the reset mechanism of the limit block ensure the stability and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a first isometric view of a minimally invasive sampling device for oncology proposed by the present invention.
[0021] Figure 2 This is a second isometric view of a minimally invasive sampling device for oncology proposed by the present invention.
[0022] Figure 3 The first isometric view of the sampling head of the minimally invasive sampling device for oncology proposed by the present invention.
[0023] Figure 4 This is a second isometric view of a sampling head of a minimally invasive sampling device for oncology proposed by the present invention.
[0024] Figure 5 This is a first isometric view of the internal structure of a sampling head of a minimally invasive sampling device for oncology proposed by the present invention.
[0025] Figure 6 This is a second isometric view of the internal structure of a sampling head of a minimally invasive sampling device for oncology proposed by the present invention.
[0026] Figure 7 This is a third isometric view of the internal structure of a sampling head of a minimally invasive sampling device for oncology proposed by the present invention.
[0027] Figure 8 This is an isometric view of the internal structure of a sampling head of a minimally invasive sampling device for oncology proposed by the present invention.
[0028] Fig. 9 This is an isometric view of a cutting knife of a minimally invasive sampling device for oncology proposed by the present invention.
[0029] Fig.10 This is an isometric view of an upper fixing frame and a reinforcement frame of a minimally invasive sampling device for oncology proposed by the present invention.
[0030] Fig.11 This is an isometric view of the internal structure of a tube body of a minimally invasive sampling device for oncology proposed by the present invention.
[0031] Fig.12 This is a schematic diagram of the connection state between the sampling head and the catheter of a minimally invasive sampling device for oncology proposed by the present invention.
[0032] Fig.13 This is an isometric view of the catheter structure of a minimally invasive sampling device for oncology proposed by the present invention.
[0033] Fig.14 This is a schematic diagram of a cross-sectional view of a catheter of a minimally invasive sampling device for oncology proposed by the present invention.
[0034] In the accompanying drawings: 1, sampling head; 101, first housing; 102, second housing; 103, blade groove; 104, rotating rod; 105, connecting rod; 106, torsion spring; 107, cutting knife; 108, cutting groove; 109, limiting notch; 110, sleeve; 111, pull rope; 112, mounting rod; 113, upper fixing frame; 114, reinforcement frame; 115, connecting interface; 116, sleeve; 117, telescopic rod; 118, slider; 119, first Spring; 120, limit block; 121, connecting arc plate; 122, mounting groove; 123, air bag; 124, guide groove; 125, air pipe; 126, mounting hole; 127, screw; 128, pressure balloon; 2, catheter; 201, tube body; 202, wrapping strip; 203, sliding column; 204, connecting plate; 205, extension rod; 206, fixing column; 207, top plate; 208, second spring; 209, fixing plate; 210, connecting rope. DETAILED DESCRIPTION
[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.
[0036] The invention discloses a minimally invasive sampling device for oncology. Example
[0037] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, a minimally invasive sampling device for oncology includes a sampling head 1, and the sampling head 1 includes a first shell 101 and a second shell 102. The first shell 101 and the second shell 102 are set to the same shape and one end of the first shell 101 and the second shell 102 is set to a hemispherical structure. The first shell 101 and the second shell 102 are set to a hollow structure, and a blade groove 103 is opened between one end of the first shell 101 and the second shell 102. Like a traditional sampling device, the first shell 101 and the second shell 102 in the present application are also set to a semicircular capsule structure. The difference is that the two shells of the traditional sampling device are a rotating structure, while the two shells in the present application are connected together and cannot rotate; The first shell 101 and the second shell 102 are both fixedly connected to the side close to each other with a connecting rod 105, and a rotating rod 104 is fixedly connected between the outer sides of the two connecting rods 105. The outer side of the connecting rod 105 and the inside of the rotating rod 104 are connected with a torsion spring 106. The outer side of the rotating rod 104 is fixedly connected with a cutting knife 107, and the torsion spring 106 can ensure the rotation force of the cutting knife 107. The cutting knife 107 is set to an arc structure and is eccentrically connected to the rotating rod 104. The cutting knife 107 is driven to rotate by the rotation of the rotating rod 104. Since the cutting knife 107 is not concentric with the rotating rod 104, the cutting knife 107 can be rotated out of the first shell 101 and the second shell 102 through the blade groove 103. The outside of the first shell 101 and the second shell 102 can be rotated back to the inside of the first shell 101 and the second shell 102 through the blade groove 103 after rotating one circle to complete the reset. The inside of the cutting knife 107 is provided with a cutting groove 108, and the edges and corners of the cutting knife 107 and the outside of the cutting groove 108 are provided with a cutting edge for cutting. The cutting knife 107 cuts through the cutting edge. Because the cutting knife 107 rotates in a circle, the tissue will be cut off after the cutting knife 107 rotates one circle, and the cutting groove 108 is used to store the cut tissue. This method can ensure that the sampling slice area is large enough and the thickness is thin enough, so that the patient's wound recovery can be accelerated. A limited position notch 109 is provided on the cutting knife 107; Example
[0038] Reference Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment, sleeves 110 are fixedly connected to the outer side of the rotating rod 104 and on both sides of the cutting knife 107, and pull ropes 111 are wound around the outer side of the sleeves 110. The two pull ropes 111 are symmetrically arranged. When the pull ropes 111 are pulled, the sleeves 110 can be driven to rotate, and then the rotating rod 104 is driven to rotate through the sleeves 110, so as to achieve the driving effect of the cutting knife 107; Example
[0039] Reference Figure 6 , Figure 7 , Figure 8 and Fig.10 As shown, in a preferred embodiment, two mounting rods 112 are fixedly connected inside the second shell 102, one of the mounting rods 112 is fixedly connected to an upper fixing frame 113, and the other mounting rod 112 is fixedly connected to a reinforcement frame 114, and two pull ropes 111 both penetrate the upper fixing frame 113 and the reinforcement frame 114 and extend to the outside of the reinforcement frame 114 and are fixedly connected to a connection interface 115, and the pull rope 111 can ensure smooth pulling and positioning of the pull rope 111 through the upper fixing frame 113 and the reinforcement frame 114, and prevent the two pull ropes 111 from getting entangled during the force generation process, and the tail ends of the two pull ropes 111 are braided together and connected to the connection interface 115, so that the pull rope 111 can be driven to move only through one end of the connection interface 115; Example
[0040] Reference Fig.10 and Fig.11 As shown, in a preferred embodiment, a sleeve 116 is fixedly connected between the upper fixing frame 113 and the reinforcement frame 114, and a slider 118 is slidably connected inside the sleeve 116. A telescopic rod 117 is fixedly connected to one side of the slider 118. One end of the telescopic rod 117 extends to the outside of the sleeve 116 and is fixedly connected to a limiting block 120. The limiting block 120 is used in conjunction with the limiting notch 109. A first spring 119 is fixedly connected inside the sleeve 116 and between the limiting block 120 and the inner wall of the sleeve 116. The cutting knife When the cutting blade 107 rotates, the telescopic rod 117 can be driven to slide inside the sleeve 116, and the first spring 119 can be squeezed during the movement. In this way, after the cutting blade 107 rotates one circle, the outer side of the cutting blade 107 will contact the limit block 120, and then the telescopic rod 117 can be driven to move through the limit block 120. When the cutting blade 107 completes the cutting action, the limit block 120 can be reset through the first spring 119, and the limit block 120 can contact the limit notch 109 to achieve a locking effect. Example
[0041] Reference Figure 3 and Figure 4As shown, in a preferred embodiment, the first shell 101 and the second shell 102 are both provided with a mounting groove 122, and the mounting groove 122 is fixedly connected with an air bag 123, the first shell 101 and the second shell 102 are both provided with a guide groove 124, and the air bag 123 is fixedly connected with an air delivery pipe 125, and the air delivery pipe 125 dries out the corresponding guide groove 124 and extends to the outside of the corresponding shell, and two air bags 123 are provided and symmetrically arranged on the outside of the two shells. After being matched with a visual lens, when the sampling head 1 is extended into the patient's body, assuming that it is extended into the intestinal part, the two air bags 123 can be expanded together, so that the air bags 123 are in conflict with the inner wall of the intestine, so as to complete the fixation of the sampling head 1. Similarly, the position of the sampling head 1 can be fine-tuned by adjusting the pressure of the air bags 123 on both sides, so as to achieve more accurate sampling position adjustment and position fixation; Example
[0042] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment, two mounting holes 126 are provided on the first shell 101, and screws 127 are provided inside the mounting holes 126. The screws 127 are threadedly connected with the corresponding mounting rods 112. The first shell 101 is connected to the mounting rods 112 through the screws 127 to achieve connection with the second shell 102. The first shell 101 and the second shell 102 are connected by the screws 127, which not only facilitates the assembly work in the production link, but also makes it more convenient and quick to take samples in the later stage, avoiding the situation where the tissue is stuck in the cutting groove 108 and is inconvenient to be separated; Example
[0043] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in a preferred embodiment, one end of the first shell 101 and the second shell 102 are fixedly connected to a connecting arc plate 121, and the two connecting arc plates 121 are combined to form a circular structure. The outer sides of the two connecting arc plates 121 are wrapped with a catheter 2, and the catheter 2 includes a tube body 201, and two wrapping strips 202 are fixedly connected to the tube body 201. The air delivery pipe 125 extends to the other end of the tube body 201 through the corresponding wrapping strips 202 and is fixedly connected to a pressure balloon 128. The tube body 201 is used to pass the sampling head 1 through the oral cavity. Or other delivery to the sampling site, and the wrapping strip 202 plays a certain protective role on the air delivery tube 125, preventing the air delivery tube 125 from bending in the patient's body and affecting the delivery, and the pressure balloon 128 (the pressure balloon 128 can refer to the ball valve structure on the mercury blood meter, because it belongs to the mature technical field, this application does not make too much technical elaboration) is used to input the external gas into the interior of the air bag 123 through the air delivery tube 125 and expand it, and after the input is completed, the air can be deflated through the deflation valve on the pressure balloon 128; Example
[0044] Reference Fig.13 and Fig.14 As shown, in a preferred embodiment, a sliding column 203 is slidably connected to one end of the tube body 201, the top of the sliding column 203 extends to the outside of the tube body 201 and is fixedly connected to the connecting plate 204, the inside of the tube body 201 is fixedly connected to the fixing plate 209, the top of the fixing plate 209 is fixedly connected to the fixing column 206, the top of the fixing column 206 passes through the sliding column 203 and the connecting plate 204 and is fixedly connected to the top plate 207, and the top plate 207 and the connecting plate 204 are both provided with an extension rod 20 5. A second spring 208 is sleeved on the outer side of the fixed column 206 and between the connecting plate 204 and the top plate 207. A connecting rope 210 is fixedly connected to the bottom of the sliding column 203. One end of the connecting rope 210 is connected to the connecting interface 115. By pulling the connecting plate 204, the connecting plate 204 rises, thereby squeezing the second spring 208. At the same time, the rising of the connecting plate 204 drives the connecting rope 210 to rise, and then the connecting rope 210 drives the pull rope 111 to move through the connecting interface 115; Working principle: By pulling the connecting plate 204, the connecting plate 204 rises, thereby squeezing the second spring 208. At the same time, the rise of the connecting plate 204 will drive the connecting rope 210 to rise, and then drive the pull rope 111 to move through the connecting rope 210 and the connecting interface 115. The tube body 201 is used to deliver the sampling head 1 to the sampling site through the mouth or other means, while the wrapping strip 202 plays a certain protective role on the air supply tube 125 to prevent the air supply tube 125 from bending in the patient's body and affecting the delivery. The external gas is input into the interior of the airbag 123 through the air supply tube 125 through the pressure balloon 128 and expands it. After the input is completed, the air can be deflated through the deflation valve on the pressure balloon 128.
[0045] Specific use process: After being equipped with a visual lens, when the sampling head 1 is inserted into the patient's body, assuming that it is inserted into the intestinal part, the two airbags 123 can be expanded together, so that the airbags 123 are in conflict with the inner wall of the intestinal tract, thereby completing the fixation of the sampling head 1. Similarly, the position of the sampling head 1 can be fine-tuned by adjusting the pressure of the airbags 123 on both sides, so as to achieve more accurate sampling position adjustment and position fixation, and the pull rope 111 is driven to move through the connecting rope 210 and the connecting interface 115, thereby driving the cutting knife 107 to rotate. When the pull rope 111 is pulled, it can drive the sleeve 110 to rotate, and then drive the rotating rod 104 to rotate through the sleeve 110, thereby completing the driving effect of the cutting knife 107. When the cutting knife 107 rotates, it can drive the telescopic rod 117 to slide inside the sleeve 116, and squeeze the first spring 119 during the movement. When the cutting knife 107 completes one rotation, the outer side of the cutting knife 107 will contact the limit block 120, and then the telescopic rod 117 will be driven to move through the limit block 120. When the cutting knife 107 completes the cutting action, the limit block 120 can be reset through the first spring 119, and the limit block 120 can contact the limit notch 109 and perform a locking effect, and the cutting knife 107 is driven to rotate through the rotation of the rotating rod 104. Since the cutting knife 107 and the rotating rod 104 are non-concentric structures, the cutting knife 107 can be rotated out of the first shell 101 and the second shell 102 through the blade groove 103, and after one rotation, it can also be rotated back to the inside of the first shell 101 and the second shell 102 through the blade groove 103 to complete the reset. The cutting knife 107 is provided with a cutting groove 108 inside, and the cutting knife 107 and the corners located outside the cutting groove 108 are provided with cutting edges for cutting. The cutting knife 107 cuts with the blade, and since the cutting knife 107 rotates in a circle, the tissue is cut off after the cutting knife 107 rotates one circle. The cutting groove 108 is used to store the cut tissue, ensuring that the sampled slice area is large enough and the thickness is thin enough, thereby accelerating the patient's wound recovery.
[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. The replacement may be a replacement of a part of the structure, device, method step, or a complete technical solution. Any equivalent replacement or change according to the technical solution and the inventive concept of the present invention shall be covered within the protection scope of the present invention.
Claims
1. A minimally invasive sampling device for oncology, comprising a sampling head (1), characterized in that: The sampling head (1) comprises a first shell (101) and a second shell (102); the first shell (101) and the second shell (102) are arranged in the same shape and one end of the first shell (101) and the second shell (102) are arranged in a hemispherical structure; the first shell (101) and the second shell (102) are arranged in a hollow structure; and a blade groove (103) is provided between one end of the first shell (101) and the second shell (102); A connecting rod (105) is fixedly connected to one side of the first shell (101) and the second shell (102) where they are close to each other; a rotating rod (104) is fixedly connected between the outer sides of the two connecting rods (105); a torsion spring (106) is connected to the outer side of the connecting rod (105) and located inside the rotating rod (104); a cutting knife (107) is fixedly connected to the outer side of the rotating rod (104); the cutting knife (107) is arranged in an arc-shaped structure and is eccentrically connected to the rotating rod (104); a cutting groove (108) is provided inside the cutting knife (107); a cutting edge for cutting is provided at the corners of the cutting knife (107) and located outside the cutting groove (108); and a limiting notch (109) is provided on the cutting knife (107).
2. The minimally invasive sampling device for oncology according to claim 1, characterized in that: Sleeves (110) are fixedly connected to the outside of the rotating rod (104) and on both sides of the cutting knife (107), and pull ropes (111) are wound around the outside of the sleeves (110), and the two pull ropes (111) are symmetrically arranged.
3. The minimally invasive sampling device for oncology according to claim 2, characterized in that: Two mounting rods (112) are fixedly connected inside the second shell (102), one of the mounting rods (112) is fixedly connected to an upper fixing frame (113), and the other mounting rod (112) is fixedly connected to a reinforcement frame (114), and both of the two pull ropes (111) pass through the upper fixing frame (113) and the reinforcement frame (114) and extend to the outside of the reinforcement frame (114) and are fixedly connected to a connection interface (115).
4. The minimally invasive sampling device for oncology according to claim 3, characterized in that: A sleeve (116) is fixedly connected between the upper fixing frame (113) and the reinforcement frame (114); a slider (118) is slidably connected inside the sleeve (116); a telescopic rod (117) is fixedly connected to one side of the slider (118); one end of the telescopic rod (117) extends to the outside of the sleeve (116) and is fixedly connected to a limit block (120); the limit block (120) is used in conjunction with the limit notch (109); and a first spring (119) is fixedly connected inside the sleeve (116) and between the limit block (120) and the inner wall of the sleeve (116).
5. The minimally invasive sampling device for oncology according to claim 1, characterized in that: The first shell (101) and the second shell (102) are both provided with mounting grooves (122), and air bags (123) are fixedly connected to the mounting grooves (122). The first shell (101) and the second shell (102) are both provided with guide grooves (124), and the air bags (123) are fixedly connected to air pipes (125), and the air pipes (125) are hollowed out from the corresponding guide grooves (124) and extend to the outside of the corresponding shells.
6. The minimally invasive sampling device for oncology according to claim 1, characterized in that: The first shell (101) is provided with two mounting holes (126), each of the mounting holes (126) being provided with a screw (127), each of the screws (127) being threadedly connected to a corresponding mounting rod (112), and the first shell (101) is connected to the second shell (102) by connecting the screws (127) to the mounting rod (112).
7. The minimally invasive sampling device for oncology according to claim 5, characterized in that: One end of each of the first shell (101) and the second shell (102) is fixedly connected to a connecting arc plate (121), the two connecting arc plates (121) are combined to form a circular structure, the outer sides of the two connecting arc plates (121) are wrapped with a catheter (2), the catheter (2) comprises a tube body (201), two wrapping strips (202) are fixedly connected to the tube body (201), and the air delivery pipe (125) extends to the other end of the tube body (201) through the corresponding wrapping strips (202) and is fixedly connected to a pressure balloon (128).
8. The minimally invasive sampling device for oncology according to claim 7, characterized in that: A sliding column (203) is slidably connected inside one end of the tube body (201), the top of the sliding column (203) extends to the outside of the tube body (201) and is fixedly connected to a connecting plate (204), the inside of the tube body (201) is fixedly connected to a fixing plate (209), the top of the fixing plate (209) is fixedly connected to a fixing column (206), and the top of the fixing column (206) penetrates to the top of the sliding column (203) and the connecting plate (204) and is fixedly connected to a top plate (207).
9. The minimally invasive sampling device for oncology according to claim 8, characterized in that: The top plate (207) and the connecting plate (204) are both provided with an extension rod (205), and a second spring (208) is sleeved on the outside of the fixing column (206) and between the connecting plate (204) and the top plate (207).
10. The minimally invasive sampling device for oncology according to claim 8, characterized in that: A connecting rope (210) is fixedly connected to the bottom of the sliding column (203), and one end of the connecting rope (210) is connected to the connecting interface (115).