Disposable microwave ablation needle convenient to disassemble

Abstract

A disposable microwave ablation needle convenient to disassemble relates to the technical field of microwave ablation needles and comprises a handle, a microwave ablation needle head and a needle seat, the microwave ablation needle head is assembled on the needle seat, the head of the handle is connected with a pressing head through a corrugated pipe, an end cap is buckled in the middle of the pressing head, and a driving mechanism is connected between the pressing head and the handle. A clamping unit is fixed on the driving mechanism; the disposable microwave ablation needle convenient to disassemble is easy to operate and convenient to assemble and disassemble, the needle head of the microwave ablation needle can be conveniently separated from the handle, so that the needle head of the microwave ablation needle is reserved to be used as an indwelling channel for postoperative treatment, the clinical application function of the ablation needle is extended, and the disposable microwave ablation needle is convenient to disassemble and assemble. Accurate operation positions of subsequent tissue fluid extraction, drug implantation and the like are guaranteed, clinical operation procedures are simplified, operation time is shortened, repeated injuries to patients are avoided, and complications are reduced.

Description

Technical Field

[0001] This utility model relates to the field of microwave ablation needle technology, and in particular to a disposable microwave ablation needle that is easy to disassemble. Background Technology

[0002] Microwave ablation therapy utilizes antenna radiation to emit microwaves. These microwaves cause ions and polar water molecules in the tissue to rotate, vibrate, and rub against each other, generating a thermal effect. This rapidly raises the temperature of the treated area to a very high level, causing tissue coagulation, dehydration, and necrosis, thus achieving the therapeutic goal. It is a highly efficient, rapid, and uniform heating method for tumor tissue, providing thorough thermal coagulation, and is convenient and safe to use. In recent years, it has been widely used in clinical practice. Currently, after ablation surgery, in-situ sampling or implantation of markers at the ablation site is necessary for surgical evaluation, postoperative follow-up, and assessment of whether the tumor has recurred. Sometimes, it is also necessary to inject drugs into the ablation site for embolization or further treatment.

[0003] To address the aforementioned issues, current clinical practice primarily involves removing the ablation needle after ablation and re-inserting it at the original site to extract tissue fluid or implant medication. However, this method makes it difficult to accurately locate the original ablation site, and re-inserting the needle cannot always follow the original path, resulting in repeated harm to the patient and increasing the risk of complications. Therefore, designing an ablation needle that allows for the removal of the handle after ablation of the target lesion, leaving the needle shaft in place to provide an accurate location for subsequent procedures such as tissue fluid extraction and drug implantation, is a pressing issue that needs to be addressed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a disposable microwave ablation needle that is easy to disassemble. It is simple to operate, easy to install and disassemble, and facilitates the separation of the microwave ablation needle tip from the handle. This allows the remaining microwave ablation needle tip to be used as an indwelling channel for postoperative treatment, extending the clinical application function of the ablation needle. It ensures accurate positioning for subsequent operations such as tissue fluid extraction and drug implantation, simplifies clinical operation procedures, shortens operation time, avoids multiple harms to patients, and reduces the occurrence of complications. It can effectively solve the problems in the background art.

[0005] To achieve the aforementioned objective, this utility model adopts the following technical solution:

[0006] A disposable microwave ablation needle that is easy to disassemble includes a handle, a microwave ablation needle tip, and a needle base. The microwave ablation needle tip is assembled on the needle base. The head of the handle is connected to a pressing head through a bellows. An end cap is fastened to the middle of the pressing head. A drive mechanism is connected between the pressing head and the handle. A clamping unit is fixed on the drive mechanism.

[0007] The needle holder is fixed to the clamping part of the clamping unit.

[0008] Furthermore, the drive mechanism includes guide rods and sliders. There are three guide rods, which are rotated and fixed in an array within the mounting cavity of the handle head. The slider is slidably connected to the guide rods.

[0009] Furthermore, the drive mechanism also includes a spring, which is sleeved on the guide rod, and the ends of the spring are fixedly connected to the slider and the handle, respectively.

[0010] Furthermore, the drive mechanism also includes a first hinge, a connecting rod, and a second hinge. One end of the connecting rod is hinged to the bottom of the pressing head via the first hinge, and the other end of the connecting rod is hinged to the top of the slider via the second hinge.

[0011] Furthermore, the clamping unit includes a transmission frame and a clamp, the transmission frame being fixed to the bottom of the slider and the clamp being fixed to the end of the transmission frame.

[0012] Furthermore, the needle holder is clamped and fixed between the clamps, and the top of the clamp is provided with a protruding edge, the top of the needle holder abutting against the protruding edge of the clamp.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This easily detachable disposable microwave ablation needle has the following advantages: Pressing the pressing head causes the clamps on the clamping unit to move away from each other through the driving mechanism, thereby releasing the fixing effect on the needle seat, so that the microwave ablation needle tip can be separated from the handle. Its operation is simple, and it is easy to install and disassemble. It is convenient to separate the microwave ablation needle tip from the handle, so that the remaining microwave ablation needle tip can be used as an indwelling channel for postoperative treatment, which extends the clinical application function of the ablation needle, ensures the accurate positioning of subsequent operations such as tissue fluid aspiration and drug implantation, simplifies clinical operation procedures, shortens operation time, avoids multiple harms to patients, and reduces the occurrence of complications. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0016] Figure 3 This utility model Figure 2 A magnified structural diagram at point A.

[0017] In the diagram: 1-handle, 2-microwave ablation needle tip, 3-drive mechanism, 31-first hinge, 32-connecting rod, 33-second hinge, 34-spring, 35-guide rod, 36-slider, 4-clamping unit, 41-transmission frame, 42-clamp, 5-bellows, 6-end cap, 7-pressing head, 8-needle seat. Detailed Implementation

[0018] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0019] Please see Figure 1-3 This embodiment provides a technical solution: a disposable microwave ablation needle that is easy to disassemble, including a handle 1, a microwave ablation needle head 2 and a needle base 8. The microwave ablation needle head 2 is assembled on the needle base 8. The head of the handle 1 is connected to a pressing head 7 through a bellows 5. An end cap 6 is fastened to the middle of the pressing head 7. A driving mechanism 3 is connected between the pressing head 7 and the handle 1. A clamping unit 4 is fixed on the driving mechanism 3. The bellows 5 is used to shield the driving mechanism 3 inside.

[0020] The needle holder 8 is fixed on the clamping part of the clamping unit 4.

[0021] The drive mechanism 3 includes guide rods 35 and sliders 36. Three guide rods 35 are arranged in a rotating array and fixed within the mounting cavity of the handle 1 head. The slider 36 is slidably connected to the guide rods 35. The drive mechanism 3 also includes a spring 34, which is sleeved on the guide rods 35. The ends of the spring 34 are fixedly connected to the slider 36 and the handle 1, respectively. The drive mechanism 3 further includes a first hinge 31, a connecting rod 32, and a second hinge 33. One end of the connecting rod 32 is connected to the bottom of the pressing head 7 via the first hinge 31. The connecting rod 32 is hinged to the top of the slider 36 via a second hinge 33. The clamping unit 4 includes a transmission frame 41 and a clamp 42. The transmission frame 41 is fixed to the bottom of the slider 36, and the clamp 42 is fixed to the end of the transmission frame 41. Pressing the pressing head 7 pushes the connecting rod 32 to push the slider 36 to slide along the guide rod 35. The slider 36 drives the clamp 42 away from each other through the transmission frame 41, thereby releasing the fixing effect on the needle seat 8, so that the microwave ablation needle tip 2 can be separated from the handle. 1. Separation is performed, leaving the microwave ablation needle tip 2 as an indwelling channel for postoperative treatment. This extends the clinical application function of the ablation needle, ensuring accurate positioning for subsequent operations such as tissue fluid extraction and drug implantation, simplifying clinical procedures, shortening surgical time, avoiding multiple injuries to patients, and reducing the occurrence of complications. When it is necessary to fix the needle seat 8, the pressing head 7 is released. At this time, the compressed spring 34 returns to its original shape, and the deformation force of the spring 34 reacts to the slider 36, causing the slider 36 to drive the clamping units 4 to move closer together. The clamps 42 on the clamping units 4 move closer together, thereby fixing the needle seat 8. The operation is simple, and the installation and disassembly are convenient. It is easy to separate the microwave ablation needle tip 2 from the handle 1, leaving the microwave ablation needle tip 2 as an indwelling channel for postoperative treatment. This extends the clinical application function of the ablation needle, ensuring accurate positioning for subsequent operations such as tissue fluid extraction and drug implantation, simplifying clinical procedures, shortening surgical time, avoiding multiple injuries to patients, and reducing the occurrence of complications.

[0022] The needle holder 8 is clamped and fixed between the clamps 42. The top of the clamp 42 is provided with a protruding edge. The top of the needle holder 8 abuts against the protruding edge of the clamp 42. The protruding edge is used to limit the needle holder 8 from moving upward during use, thereby ensuring safety during use.

[0023] The working principle of the easily disassembled disposable microwave ablation needle provided by this utility model is as follows: Pressing the pressing head 7 pushes the connecting rod 32 to push the slider 36 to slide along the guide rod 35. The slider 36 drives the clamp 42 to move away from each other through the transmission frame 41, thereby releasing the fixing effect on the needle seat 8. This allows the microwave ablation needle head 2 to be separated from the handle 1, leaving an indwelling channel for the microwave ablation needle head 2 to be used for postoperative treatment. This extends the clinical application function of the ablation needle, ensures accurate positioning for subsequent tissue fluid extraction, drug implantation, and other operations, simplifies clinical operation procedures, shortens operation time, avoids multiple injuries to patients, and reduces the occurrence of complications.

[0024] When it is necessary to fix the needle holder 8, release the pressing head 7. At this time, the compressed spring 34 returns to its original shape. The deformation force of the spring 34 reacts to the slider 36, thereby causing the slider 36 to drive the clamping units 4 to move closer to each other. The clamps 42 on the clamping units 4 move closer to each other, thereby fixing the needle holder 8.

[0025] It is worth noting that the components disclosed in the above embodiments are all general standard parts or parts known to those skilled in the art, and their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. For example, a rotary connection can refer to a rotary connection through a bearing.

[0027] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.

Claims

1. A disposable microwave ablation needle that is easy to disassemble, comprising a handle (1), a microwave ablation needle tip (2), and a needle base (8), wherein the microwave ablation needle tip (2) is mounted on the needle base (8), characterized in that: The head of the handle (1) is connected to a pressing head (7) via a bellows (5). An end cap (6) is fastened to the middle of the pressing head (7). A driving mechanism (3) is connected between the pressing head (7) and the handle (1). A clamping unit (4) is fixed on the driving mechanism (3). The needle seat (8) is fixed on the clamping part of the clamping unit (4).

2. The easily detachable disposable microwave ablation needle according to claim 1, characterized in that: The drive mechanism (3) includes a guide rod (35) and a slider (36). There are three guide rods (35), and the three guide rods (35) are rotated and fixed in the mounting cavity of the head of the handle (1). The slider (36) is slidably connected to the guide rods (35).

3. The easily detachable disposable microwave ablation needle according to claim 1 or 2, characterized in that: The drive mechanism (3) also includes a spring (34), which is sleeved on the guide rod (35), and the ends of the spring (34) are fixedly connected to the slider (36) and the handle (1) respectively.

4. The easily detachable disposable microwave ablation needle according to claim 1 or 2, characterized in that: The drive mechanism (3) further includes a first hinge (31), a connecting rod (32), and a second hinge (33). One end of the connecting rod (32) is hinged to the bottom of the pressing head (7) through the first hinge (31), and the other end of the connecting rod (32) is hinged to the top of the slider (36) through the second hinge (33).

5. The easily detachable disposable microwave ablation needle according to claim 1 or 2, characterized in that: The clamping unit (4) includes a transmission frame (41) and a clamp (42). The transmission frame (41) is fixed to the bottom of the slider (36), and the clamp (42) is fixed to the end of the transmission frame (41).

6. The easily detachable disposable microwave ablation needle according to claim 1 or 5, characterized in that: The needle seat (8) is clamped and fixed between the clamps (42). The top of the clamp (42) is provided with a protruding edge, and the top of the needle seat (8) abuts against the protruding edge of the clamp (42).

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