Device for liver needle biopsy

Abstract

The invention relates to the technical field of liver needle biopsy, which comprises a fixing belt, one end of the fixing belt is fixedly connected with a fixing plate, the interior of the fixing plate is slidably connected with a hollow cylinder, the interior of the hollow cylinder is slidably connected with a cutting tube, the top of the hollow cylinder is provided with a chute, and the other end of the fixing plate is fixedly connected with a clamping box. A tube inserting groove is formed in the clamping box, a rotating rod is rotationally connected to the top of the clamping box, a rotating wheel is fixedly connected to the top of the rotating rod, and when the device is used, a worker can drive the cutting tube to conduct puncturing by transversely penetrating the cutting tube through the tube inserting groove, and at the moment, the rotating wheel can be rotated to drive the rotating rod to rotate; at the moment, two sets of rotating gears are in meshed connection with a rack, at the moment, two sets of moving plates can move in the direction close to each other, at the moment, a cutting pipe can be fixed through two sets of clamping plates, and the situation that the device shifts and slides off in the puncturing process is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of liver puncture biopsy, in particular to a device for liver puncture biopsy. Background Art

[0002] Liver biopsy technology plays an important role in modern medicine, especially in the diagnosis of liver diseases and the evaluation of treatment effects. Through liver biopsy, doctors can extract tissue samples from the patient's liver for pathological examination, which is crucial for determining the nature and extent of the lesion. Liver diseases such as hepatitis, cirrhosis, fatty liver, liver tumors, etc. can all be diagnosed through liver biopsy. Therefore, liver biopsy devices are widely used in clinical practice.

[0003] However, with the development of medical technology, the existing liver puncture biopsy devices still have many technical deficiencies in practical applications, mainly in the following aspects:

[0004] The commonly used liver puncture devices on the market generally lack effective fixing devices and usually rely on manual fixation by medical staff. In this case, the patient may move unconsciously due to pain or tension, causing the puncture device to slip or shift and the puncture position to shift, thus affecting the accuracy and effect of sampling. Since the diseased part of some patients is located on one side of the liver, the respiratory movement of the two sides of the patient varies, which will also affect the accuracy and effect of sampling. In addition, loose fixation of the device may also cause accidents during the puncture process, causing secondary injuries to the patient. Especially when multiple sampling is required, the lack of fixing devices may lead to unstable operation, further increasing the complexity and risk of the operation.

[0005] Liver puncture requires extremely high precision, which must ensure the accuracy of sampling while avoiding excessive damage to the liver. However, most existing puncture devices lack depth control devices, and medical staff can only rely on experience or feel to judge the depth of puncture. This operation method not only increases the difficulty of operation, but may also lead to insufficient or excessive sampling depth, too little sampling tissue, or damage to other organs. In some cases, the operation method that relies too much on experience makes it difficult to ensure the consistency and accuracy of operations between different medical staff, affecting the effectiveness of pathological analysis.

[0006] Existing liver puncture devices often face the problem of loose clamping or difficult to adjust clamping force when clamping the cutting tube. This makes the cutting tube easy to loosen or shift during the puncture process, which directly affects the sampling effect of the sample. Especially in operations that require precise adjustment of the sampling depth or angle, the stability of the device is particularly important. Unstable clamping not only affects the accuracy of sampling, but also increases the risk to patients during the puncture process. For patients of different body sizes, existing devices also lack a flexible adjustment mechanism and are difficult to adapt to diverse surgical needs.

[0007] In actual medical operations, medical staff often need to complete puncture and sampling quickly, especially when the patient's condition is unstable or multiple sampling is required. However, the existing puncture devices are cumbersome to replace and clean the cutting tube, which affects the overall efficiency of the operation. Due to the complex design of the puncture device, cleaning and maintenance work requires a lot of time, which not only increases the operation time, but also may cause air to enter the patient's body, causing adverse reactions such as pneumoperitoneum, and increasing the risk of intraoperative infection. In addition, when replacing or adjusting the device during surgery, existing devices often lack a convenient replacement structure, resulting in a poor user experience.

[0008] During the puncture process, the patient may have a violent reaction due to pain or stress, which may lead to accidental displacement or fall off of the device, increasing the complexity of the operation and the pain of the patient. The existing device lacks effective restraint and protection measures in fixing the patient's body, which may not only lead to surgical failure, but also increase the risk of intraoperative injury. Especially in complex conditions, the lack of stabilization devices and protective measures will put medical staff under greater operational pressure.

[0009] Therefore, in order to improve the detection accuracy of the liver puncture biopsy device and complete the liver puncture biopsy more stably, we designed and invented a liver puncture biopsy device. Summary of the invention

[0010] The present invention provides the following technical solution, which is intended to solve the problem that the liver puncture biopsy device is inconvenient to fix, and is inconvenient to limit and position during use.

[0011] A device for liver puncture biopsy comprises a fixed belt, one end of the fixed belt is fixedly connected to a fixed plate, a hollow cylinder is slidably connected inside the fixed plate, a cutting tube is slidably connected inside the hollow cylinder, a sliding groove is provided on the top of the hollow cylinder, the other end of the fixed plate is fixedly connected to a clamping box, a tube insertion groove is provided inside the clamping box, a rotating rod is rotatably connected to the top of the clamping box, a rotating wheel is fixedly connected to the top of the rotating rod, a rotating gear is fixedly connected to the bottom of the rotating rod, racks are meshingly connected on both sides of the rotating gear, mobile plates are fixedly connected to both ends of the rack, a connecting plate is fixedly connected to the bottom of the mobile plate, and a clamping plate is fixedly connected to the bottom of the connecting plate.

[0012] As a preferred technical solution of the present invention, a sampling tube is slidably connected inside the cutting tube, and a fixing ring is fixedly connected to one end of the sampling tube.

[0013] As a preferred technical solution of the present invention, a sliding rod is slidably connected inside the hollow cylinder, a handle is fixedly connected to the top of the sliding rod, and the bottom of the sliding rod is fixedly connected to the top of the cutting tube.

[0014] As a preferred technical solution of the present invention, a first Velcro is fixedly connected inside the fixed waist belt, and a second Velcro is fixedly connected inside the fixed waist belt.

[0015] As a preferred technical solution of the present invention, a limiting plate is fixedly connected to the periphery of the cutting tube, and the material of the limiting plate is rubber.

[0016] As a preferred technical solution of the present invention, a slide rail is provided inside the clamping box, a slider is slidably connected inside the slide rail, and the bottom of the slider is fixedly connected to the top of the moving plate.

[0017] As a preferred technical solution of the present invention, one end of the fixed plate is fixedly connected to a locking box, one side of the locking box is slidably connected to a fixed plug rod, the outer periphery of the fixed plug rod is slidably connected to a vertical plate, and the outer periphery of the fixed plug rod is sleeved with a spring. One side of the fixed plug rod is fixedly connected to a locking plate, and one side of the locking plate is fixedly connected to a handle.

[0018] As a preferred technical solution of the present invention, an antibacterial coating is provided on the outer side of the cutting tube to reduce the risk of infection to the tissue during the puncture process and further improve the safety of the device.

[0019] As a preferred technical solution of the present invention, the outer surface of the hollow tube is provided with scale lines for indicating the insertion depth of the cutting tube, thereby helping medical personnel to control the puncture depth more accurately.

[0020] As a preferred technical solution of the present invention, a pressure sensor is provided inside the clamping box to monitor the clamping force and remind the operator through a signal to ensure the fixing stability of the clamping tube to prevent the device from shifting due to insufficient clamping force.

[0021] Beneficial Effects

[0022] Compared with the prior art, the present invention provides a device for liver puncture biopsy, which has the following

[0023] Beneficial effects:

[0024] A clamping box is fixedly connected to the other end of the fixed plate. When the device is in use, the staff can drive the cutting tube to puncture by inserting the cutting tube horizontally into the tube slot. At this time, the rotating wheel can be used to drive the rotating rod to rotate. At this time, two sets of rotating gears and racks can be engaged and connected. At this time, the two sets of movable plates can be used to move toward each other. At this time, the cutting tube can be fixed by two sets of clamping plates to prevent the device from shifting and slipping during the puncture process, thereby improving the stability of the device during use.

[0025] When the device is in use, the device can be inserted horizontally into the card box through the cutting tube. At this time, the device can be inserted and carded into the cutting tube through the fixed insertion rod. At this time, the device can be fixed. In addition, the device drives the fixed insertion rod to be pulled out by pulling the handle. At this time, the cutting tube can be replaced or cleaned, which improves the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a device for liver puncture biopsy according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of a fixing plate for a liver puncture biopsy device according to the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of a clamping box for a liver puncture biopsy device of the present invention;

[0029] Figure 4 The present invention is a schematic diagram of a locking box structure for a liver puncture biopsy device.

[0030] In the figure:

[0031] 1. Fixed belt; 101. Fixed plate; 102. Hollow tube; 103. Cutting tube; 104. Limiting plate; 105. Sampling tube; 106. Fixed ring; 107. Sliding rod; 108. Grip; 109. First Velcro; 110. Second Velcro; 2. Clamping box; 201. Rotating wheel; 202. Rotating rod; 203. Rotating gear; 204. Slide rail; 205. Sliding block; 206. Moving plate; 207. Connecting plate; 208. Clamping plate; 209. Insertion groove; 210. Rack; 3. Clamping box; 301. Fixed insertion rod; 302. Vertical plate; 303. Spring; 304. Clamping plate; 305. Pull handle. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: See Figure 1-4 A device for liver puncture biopsy comprises a fixed belt 1, one end of the fixed belt 1 is fixedly connected to a fixed plate 101, a hollow cylinder 102 is slidably connected inside the fixed plate 101, a cutting tube 103 is slidably connected inside the hollow cylinder 102, a sliding groove is provided on the top of the hollow cylinder 102, a clamping box 2 is fixedly connected to the other end of the fixed plate 101, a tube insertion groove 209 is provided inside the clamping box 2, a rotating rod 202 is rotatably connected to the top of the clamping box 2, a rotating wheel 201 is fixedly connected to the top of the rotating rod 202, a rotating gear 203 is fixedly connected to the bottom of the rotating rod 202, racks 210 are meshed and connected on both sides of the rotating gear 203, and both ends of the rack 210 are fixedly connected to a moving plate 2 06. A connecting plate 207 is fixedly connected to the bottom of the movable plate 206, and a clamping plate 208 is fixedly connected to the bottom of the connecting plate 207. When the device is in use, the staff can drive the cutting tube 103 to puncture by horizontally inserting the cutting tube 103 into the tube groove 209. At this time, the rotating wheel 201 can be used to drive the rotating rod 202 to rotate. At this time, the two sets of rotating gears 203 and the rack 210 can be engaged and connected. At this time, the two sets of movable plates 206 can be moved toward each other. At this time, the cutting tube 103 can be fixed by the two sets of clamping plates 208 to prevent the device from shifting and slipping during the puncture process, thereby improving the stability of the device during use.

[0034] Embodiment 2: Based on Embodiment 1, refer to Figure 1 and Figure 2The cutting tube 103 is slidably connected to a sampling tube 105, and one end of the sampling tube 105 is fixedly connected to a fixing ring 106. When the device is in use, the staff can hold and drive the sampling tube 105 to slide inside the cutting tube 103, which is convenient for the device to take samples and improves the convenience of the device for taking samples. The hollow cylinder 102 is slidably connected to a sliding rod 107, and a handle 108 is fixedly connected to the top of the sliding rod 107. The bottom of the sliding rod 107 is fixedly connected to the top of the cutting tube 103. When the device is in use, the staff can hold and slide inside the sliding groove set at the top of the hollow cylinder 102 through the sliding rod 107 to drive the sampling tube 105 to be stably advanced, which is convenient for fine-tuning the device and makes the device take samples more accurately, thereby improving the stability of the device.

[0035] Embodiment 3: Based on embodiment 1, a first Velcro 109 is fixedly connected inside the fixed belt 1, and a second Velcro 110 is fixedly connected inside the fixed belt 1. When the device is in use, the device can be fixed to the body surface of the patient by fitting the first Velcro 109 and the second Velcro 110, preventing the patient from breaking free from the device due to stress reaction, thereby improving the safety effect of the device.

[0036] Example 4: See Figure 2 On the basis of the first embodiment, the outer periphery of the cutting tube 103 is fixedly connected with a limit plate 104, and the material of the limit plate 104 is rubber. When the device is in use, the staff can hold the limit plate 104 to puncture and calibrate the device to prevent hand slippage, thereby improving the safety effect of the device.

[0037] Example 5: See Figure 3 On the basis of the first embodiment, a slide rail 204 is provided inside the clamping box 2, and a slider 205 is slidably connected inside the slide rail 204. The bottom of the slider 205 is fixedly connected to the top of the movable plate 206. When the device is clamped, the slider 205 can slide inside the slide rail 204, thereby improving the smoothness of the use of the device.

[0038] One end of the fixed plate 101 is fixedly connected to a locking box 3, one side of the locking box 3 is slidably connected to a fixed plug rod 301, the outer periphery of the fixed plug rod 301 is slidably connected to a vertical plate 302, and the outer periphery of the fixed plug rod 301 is sleeved with a spring 303. One side of the fixed plug rod 301 is fixedly connected to a locking plate 304, and one side of the locking plate 304 is fixedly connected to a pull handle 305. The device can be horizontally inserted into the locking box 3 through the cutting tube 103. At this time, the fixed plug rod 301 can be inserted and engaged into the cutting tube 103, and the device can be fixed at this time. In addition, the device drives the fixed plug rod 301 to be pulled out by pulling the pull handle 305. At this time, the cutting tube 103 can be replaced or cleaned, which improves the convenience of using the device.

[0039] Example 6: On the basis of Example 1, in order to further improve the operating convenience and sampling accuracy of the device, an antibacterial coating is provided on the outside of the cutting tube 103 of the device. The antibacterial coating is made of a biocompatible material and can effectively inhibit bacteria from entering the incision during the puncture process, thereby reducing the risk of intraoperative infection. In actual use, when medical staff puncture the liver through the cutting tube 103, the antibacterial coating can prevent bacteria from adhering to the surface of the cutting tube and protect the patient's tissue from infection. In addition, the antibacterial coating also has a certain lubricating effect, which reduces the friction on the tissue during the puncture process, improves the smoothness of the operation, and reduces the patient's pain.

[0040] Through this design, the device not only improves the safety during the operation, but also improves the comfort of the patient and reduces the possibility of postoperative infection. This embodiment further solves the problem that the puncture process in the existing device is prone to infection, and significantly improves the clinical applicability of the device and the postoperative recovery effect of the patient.

[0041] Embodiment 7: Based on Embodiment 5, in order to increase the controllability of the puncture depth, scale lines are provided on the outside of the hollow tube 102 of the device. These scale lines are evenly distributed on the hollow tube 102, and can intuitively indicate the insertion depth of the cutting tube 103. During the operation, medical staff can accurately control the insertion depth of the cutting tube 103 by observing the scale lines, thereby ensuring the accuracy of each sampling.

[0042] This design is particularly suitable for patients with complex conditions, such as liver tumors. Sampling of liver tumors requires very precise depth control to ensure the quality of the sample and the accuracy of the sampling site, and to avoid excessive damage to surrounding healthy tissues. By setting the scale line, medical staff can adjust the puncture depth at any time according to surgical needs to ensure the acquisition of high-quality samples, thereby improving the accuracy of pathological analysis.

[0043] This embodiment effectively solves the problem of lack of depth control in existing devices, and greatly improves the practicality and operational safety of the device, especially in situations where high-precision operation is required.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for liver puncture biopsy, comprising a fixed belt (1), characterized in that: One end of the fixed belt (1) is fixedly connected to a fixing plate (101), a hollow tube (102) is slidably connected inside the fixing plate (101), a cutting tube (103) is slidably connected inside the hollow tube (102), a sliding groove is provided on the top of the hollow tube (102), the other end of the fixing plate (101) is fixedly connected to a clamping box (2), a tube insertion groove (209) is provided inside the clamping box (2), and a rotating rod is rotatably connected to the top of the clamping box (2). (202), the top of the rotating rod (202) is fixedly connected to a rotating wheel (201), the bottom of the rotating rod (202) is fixedly connected to a rotating gear (203), both sides of the rotating gear (203) are meshingly connected to racks (210), both ends of the rack (210) are fixedly connected to a moving plate (206), the bottom of the moving plate (206) is fixedly connected to a connecting plate (207), and the bottom of the connecting plate (207) is fixedly connected to a clamping plate (208).

2. A device for liver puncture biopsy according to claim 1, characterized in that: A sampling tube (105) is slidably connected inside the cutting tube (103), and a fixing ring (106) is fixedly connected to one end of the sampling tube (105).

3. A liver puncture biopsy device according to claim 1, characterized in that: A sliding rod (107) is slidably connected inside the hollow cylinder (102), a handle (108) is fixedly connected to the top of the sliding rod (107), and the bottom of the sliding rod (107) is fixedly connected to the top of the cutting tube (103).

4. A device for liver puncture biopsy according to claim 1, characterized in that: The fixing waist belt (1) is fixedly connected to a first Velcro (109) inside, and the fixing waist belt (1) is fixedly connected to a second Velcro (110) inside.

5. A liver puncture biopsy device according to claim 1, characterized in that: The outer periphery of the cutting tube (103) is fixedly connected to a limiting plate (104), and the limiting plate (104) is made of rubber.

6. A liver puncture biopsy device according to claim 1, characterized in that: A slide rail (204) is provided inside the clamping box (2), a slider (205) is slidably connected inside the slide rail (204), and the bottom of the slider (205) is fixedly connected to the top of the moving plate (206).

7. A liver puncture biopsy device according to claim 6, characterized in that: One end of the fixed plate (101) is fixedly connected to a locking box (3), one side of the locking box (3) is slidably connected to a fixed plug rod (301), the periphery of the fixed plug rod (301) is slidably connected to a vertical plate (302), and the periphery of the fixed plug rod (301) is sleeved with a spring (303). One side of the fixed plug rod (301) is fixedly connected to a locking plate (304), and one side of the locking plate (304) is fixedly connected to a pull handle (305).

8. The device for liver puncture biopsy according to claim 1, characterized in that: The outer side of the cutting tube (103) is provided with an antibacterial coating to reduce the risk of infection to the tissue during the puncture process.

9. The device for liver puncture biopsy according to claim 1, characterized in that: The outer surface of the hollow cylinder (102) is provided with scale lines for indicating the insertion depth of the cutting tube (103).

10. The device for liver puncture biopsy according to claim 1, characterized in that: A pressure sensor is arranged inside the clamping box (2) for monitoring the magnitude of the clamping force.

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