A safe and multifunctional percutaneous abdominal diagnostic and treatment device

Abstract

A safe, multifunctional percutaneous abdominal diagnostic and treatment device includes an external rigid plastic cannula with an internally threaded connector at its rear end. It also includes a puncture needle and a biopsy probe that work in conjunction with the cannula. The puncture needle has an externally threaded connector at its rear end that mates with the internally threaded connector, and the biopsy probe has an externally threaded connector at its rear end that mates with the internally threaded connector. The biopsy probe has a hollow groove containing a screw. This invention enables percutaneous minimally invasive puncture techniques for abdominal tumor diagnosis and treatment; allows for arbitrary selection of a posterior lumbar or anterior abdominal approach based on the tumor location; avoids damage to adjacent organs such as the spinal cord, kidneys, and intestines during abdominal tumor diagnosis and treatment; allows selection of biopsy needle or biopsy forceps based on tumor size; integrates biopsy and drug injection functions; and can prevent tumor implantation through the needle tract.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a safe, multifunctional percutaneous abdominal diagnostic and treatment device. Background Technology

[0002] Tissue biopsy is of great value in tumor diagnosis and treatment. Clinically, however, the following problems and limitations exist with routine biopsy needles used for deep abdominal tumors (retroperitoneum) and drug injection: 1. Due to the depth of the tissue, the needle can only be inserted through the posterior lumbar approach, which carries the risk of damaging the spinal cord and kidneys due to the anatomical structures along the puncture path; 2. If the tumor is small and surrounded by the abdominal aorta and inferior vena cava, there is a risk of damaging major blood vessels, making biopsy impossible and requiring open surgery or laparoscopic surgery to obtain tumor tissue; 3. If the tumor is located in front of major blood vessels, only a very fine needle can be used through the anterior abdominal approach, or a fine needle can be inserted under endoscopic ultrasound guidance. Since the abdominal cavity is full of intestinal loops, this can puncture and damage the intestinal loops, with serious consequences; 4. Very fine needles cannot be used for local drug injection; 5. There is a 0.3% risk of needle tract implantation. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] The purpose of this invention is to provide a safe and multifunctional percutaneous abdominal diagnostic and treatment device to solve the practical problems mentioned in the background art.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a safe and multifunctional percutaneous abdominal puncture diagnostic and treatment device, comprising an external rigid plastic sheath, the rear end of which is provided with an internally threaded connector, and further comprising a puncture needle and a biopsy probe used in conjunction with the external rigid plastic sheath. The rear end of the puncture needle is provided with an externally threaded connector that mates with the internally threaded connector. The rear end of the biopsy probe is provided with a gripper. The biopsy probe has a hollow groove, and a screw is provided within the hollow groove. A threaded seat is provided between the screw and the biopsy probe. A rotating seat is provided at the rear end of the screw. The top end of the screw is rotatably connected to a propulsion block via a bearing. A limiting block is provided between the propulsion block and the biopsy probe. A claw is provided below the propulsion block. A thrust rod is provided between the claw and the propulsion block, and the thrust rod is rotatably connected to the claw and the propulsion block respectively.

[0007] Furthermore, the screw has a biopsy needle hole in the middle, and the push block has a vertical through hole that works in conjunction with the biopsy needle hole, and the diameter of the vertical through hole is larger than the diameter of the biopsy needle hole.

[0008] Furthermore, the bottom of the screw is provided with a scale.

[0009] Furthermore, the propulsion block is a regular square prism.

[0010] Furthermore, the number of claw plates is at least two.

[0011] Compared with the prior art, the present invention has the following beneficial effects.

[0012] 1. Enables percutaneous minimally invasive puncture techniques for the diagnosis and treatment of abdominal tumors; 2. Allows for arbitrary selection of posterior lumbar or anterior abdominal puncture approaches based on tumor location; 3. Prevents damage to adjacent organs and tissues such as the spinal cord, kidneys, and intestines during the diagnosis and treatment of abdominal tumors; 4. Allows for selection of biopsy needles or biopsy forceps based on tumor size; 5. Integrates biopsy and drug injection functions; 6. Prevents tumor implantation through the needle tract. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the external plastic rigid sleeve structure of the present invention;

[0015] Figure 2 This is a schematic diagram illustrating the use of the external plastic rigid sheath and the puncture needle in this invention.

[0016] Figure 3 This is a schematic diagram illustrating the use of the external plastic rigid sheath and biopsy probe of the present invention.

[0017] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. External plastic rigid sleeve; 2. Internal threaded connector; 3. Puncture needle; 4. External threaded connector for puncture needle; 5. Biopsy probe; 6. Hand grip; 7. Screw; 8. Rotary seat; 9. Threaded seat; 10. Bearing; 11. Push block; 12. Limiting block; 13. Thrust rod; 14. Claw plate; 15. Biopsy needle hole. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-4 This invention provides a technical solution: a safe, multifunctional percutaneous abdominal puncture diagnostic device, comprising an external rigid plastic sheath 1, with an internally threaded connector 2 at the rear end of the external rigid plastic sheath 1, and further comprising a puncture needle 3 and a biopsy probe 5 used in conjunction with the external rigid plastic sheath 1. The rear end of the puncture needle 3 is provided with an externally threaded connector 4 that mates with the internally threaded connector 2. The rear end of the biopsy probe 5 is provided with a handle 6, and the biopsy probe 5 has a hollow groove containing a screw 7. A threaded seat 9 is provided between the screw 7 and the biopsy probe 5, and a rotating seat 8 is provided at the rear end of the screw 7. The top of the rod 7 is rotatably connected to the push block 11 via the bearing 10. A limiting block 12 is provided between the push block 11 and the biopsy probe 5. A claw 14 is provided below the push block 11. A thrust rod 13 is provided between the claw 14 and the push block 11. The thrust rod 13 is rotatably connected to the claw 14 and the push block 11 respectively. A biopsy needle hole 15 is provided in the middle of the screw 7. The push block 11 is provided with a vertical through hole that cooperates with the biopsy needle hole 15. The diameter of the vertical through hole is larger than the diameter of the biopsy needle hole 15. The bottom of the screw 7 is provided with a scale. The push block 11 is a regular square prism. There are at least two claws 14.

[0022] In practical use, this invention first uses an external rigid plastic cannula 1 and a puncture needle 3 to puncture the abdominal cavity. After successful puncture, the puncture needle 3 is withdrawn, leaving the external rigid plastic cannula 1 intact. A biopsy probe 5 can then be inserted through the external rigid plastic cannula 1. During use, the external rigid plastic cannula 1 is positioned below the abdominal wall, with a length of approximately 10-15 cm. The biopsy probe 5, with a length of 20-30 cm, can be inserted into the abdominal cavity to a depth determined by the tissue target. Rotating the rotating seat 8 allows the screw 7 to move up and down relative to the threaded seat 9, while the limiting block 12 restricts the rotation of the advancing block 11. The propulsion block 11 can move up and down to open and close the claw 14. The probe material can be identified by CT and ultrasound. When the biopsy probe 5 reaches the target tissue deep in the peritoneum under the guidance of imaging equipment, the tumor is captured by opening and closing the claw at the end. The degree of opening and closing can be controlled by rotating the rotating seat 8 to achieve tumor tissue connection and fixation or to clamp the tumor tissue and bring it into the biopsy probe 5. When the biopsy probe 5 is withdrawn, the biopsy tissue is withdrawn as well. The claw 14 has a near-spherical appearance when it is naturally closed to avoid damage to the tissue during peritoneal dissection. When the claw 14 is closed by force, the blade design of the claw has a cutting function. For fine-needle biopsy, a fine-needle biopsy needle is inserted through the biopsy needle hole 15 for puncture biopsy. When the claw plate 14 is opened, it connects and fixes with the tumor tissue while forming a closed channel with the inside of the biopsy probe 5. The fine-needle biopsy needle enters through the biopsy needle hole 15 in the screw 7 and the vertical through hole of the advance block 11 for biopsy. When taking tissue biopsy, the fine-needle biopsy needle avoids tumor implantation in the tunnel under the protection of the biopsy probe 5. When the fine-needle biopsy needle is withdrawn, the biopsy tissue is withdrawn as well. If the tissue obtained from one puncture is insufficient, the puncture can be repeated. The fine-needle biopsy needle adopts a dynamic cutting biopsy method with the inner needle and outer cannula. The fine-needle biopsy needle can also be used for intratumoral puncture and drug injection; the outer plastic rigid cannula 1 can also be retained for drug injection and drainage of ascites.

[0023] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A safe, multifunctional percutaneous abdominal diagnostic and treatment device, characterized in that: The device includes an external rigid plastic cannula (1), the rear end of which is provided with an internally threaded connector (2). It also includes a puncture needle (3) and a biopsy probe (5) used in conjunction with the external rigid plastic cannula (1). The rear end of the puncture needle (3) is provided with an externally threaded connector (4) used in conjunction with the internally threaded connector (2). The rear end of the biopsy probe (5) is provided with a handle (6). The biopsy probe (5) has a hollow groove, and a screw (7) is provided within the hollow groove. The screw (7) connects to the biopsy probe. A threaded seat (9) is provided between the probes (5), and a rotating seat (8) is provided at the rear end of the screw (7). The top end of the screw (7) is rotatably connected to the push block (11) through a bearing (10). A limiting block (12) is provided between the push block (11) and the biopsy probe (5). A claw (14) is provided below the push block (11). A thrust rod (13) is provided between the claw (14) and the push block (11). The thrust rod (13) is rotatably connected to the claw (14) and the push block (11) respectively. The screw (7) has a biopsy needle hole (15) in the middle, and the push block (11) has a vertical through hole that works in conjunction with the biopsy needle hole (15), and the diameter of the vertical through hole is larger than the diameter of the biopsy needle hole (15). The biopsy needle hole is used to insert a fine biopsy needle for puncture biopsy. The bottom of the screw (7) is provided with a scale; When using the abdominal cavity diagnostic device, the abdominal cavity is first punctured by combining the external plastic rigid sheath (1) and the puncture needle (3). After successful puncture, the puncture needle (3) is withdrawn, while the external plastic rigid sheath (1) is retained. The biopsy probe (5) is then inserted through the external plastic rigid sheath (1). During use, the external plastic rigid sheath (1) is positioned below the abdominal wall, and the biopsy probe (5) determines the depth of entry into the abdominal cavity based on the tissue target. If a fine needle biopsy is required, the biopsy needle enters through the biopsy needle hole (15) in the screw (7) and the vertical through hole of the advance block (11) to perform the biopsy.

2. The safety type multi-functional transcutaneous peritoneal puncture diagnosis and treatment device according to claim 1, characterized in that: The propulsion block (11) is a regular square prism.

3. The safety type multi-functional transcutaneous peritoneal puncture diagnosis and treatment device according to claim 1, characterized in that: The number of claw plates (14) is at least two.

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