Full-arc ablation needle

Abstract

The utility model discloses a full arc ablation needle which comprises a handle and a needle rod, the needle rod comprises a connecting section and an arc insertion section, and the connecting section is fixedly connected with the handle. According to the full-arc-shaped ablation needle, the insertion section inserted into the human body is arranged to be arc-shaped, when the puncture depth of the ablation needle is large, tearing of the ablation needle to human tissue is reduced, the ablation needle does not have a large corner, and insertion is smoother.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a full-arc ablation needle. Background Art

[0002] Percutaneous ablation is one of the widely used methods for treating tumors. Since existing ablation needles generally puncture in a single direction, and the human body structure is complex, the puncture path will be blocked by bones, blood vessels and organs during the ablation needle puncture, which greatly limits the puncture position and makes the location of most tumors unable to be reached by puncture with the ablation needle.

[0003] At present, by using an arc-shaped ablation needle to bypass bones, blood vessels and organs to reach the tumor, Patent No. CN210990686U discloses that a curved portion is set at the front end of the needle body, and both sides of the curved portion of the needle body are straight rods. During the puncture process of the ablation needle, the best puncture interval is the front end of the curved portion. If the rear end of the curved portion continues to puncture, it will cause tearing of human tissue and cause greater harm to the human body. Summary of the invention

[0004] The present application provides a fully arc-shaped ablation needle, which solves the technical problem in the prior art that the arc-shaped ablation needle has a small puncture interval and causes harm to the human body when the puncture depth is large.

[0005] The present application provides a fully arcuate ablation needle, comprising: a handle and a needle rod, wherein the needle rod comprises a connecting section and an arcuate insertion section, and the connecting section is fixedly connected to the handle.

[0006] In some embodiments, the lateral projection range of the needle bar is 10mm-30mm, and the longitudinal projection range of the needle bar is 150mm-180mm.

[0007] In some embodiments, the insertion segment accounts for at least 80% of the length of the needle shaft.

[0008] In some embodiments, the insertion section is provided with scales.

[0009] In some embodiments, at least one electrode area is provided on the insertion section, and the non-electrode area of ​​the needle rod is insulated.

[0010] In some embodiments, a positioning block is further included, wherein a protective layer is provided on the bottom surface of the positioning block, a positioning hole is opened on the positioning block, and the needle rod can be operably inserted into the positioning hole.

[0011] In some embodiments, at least two optical fibers are further included, wherein the optical fibers are coplanar with the positioning hole, and the two optical fibers are projected onto the positioning block at different positions.

[0012] In some embodiments, a damping layer is fixedly disposed in the positioning hole, and the needle rod is in contact with the damping layer.

[0013] In some embodiments, a positioning block is provided on the handle, an alignment line is provided on the top surface of the positioning block, and the positioning block and the alignment line are both coplanar with the positioning hole.

[0014] In some embodiments, the aligning block is arranged on the opposite side of the bend of the needle rod, and a force applying block is fixedly arranged on the handle, and the force applying block is arranged on the same side of the bend of the needle rod.

[0015] The beneficial effects of this application are as follows:

[0016] The fully arc-shaped ablation needle provided by the utility model has an insertion section inserted into the human body set to an arc shape. When the puncture depth of the ablation needle is large, the tearing of the ablation needle on human tissue is reduced. The ablation needle does not have a large turning angle, and the insertion is smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model.

[0018] Figure 1 A schematic diagram of the overall structure of the fully arc-shaped ablation needle provided in this application;

[0019] Figure 2 A schematic diagram of the shape of the fully arc-shaped ablation needle provided in this application;

[0020] Figure 3 A cross-sectional view of a positioning block in a fully arc-shaped ablation needle provided in the present application;

[0021] Figure 4 A top view of the positioning block in the fully curved ablation needle provided in the present application.

[0022] Among them, 10-ablation system; 11-optical fiber; 12-positioning block; 13-force applying block; 14-observation part;

[0023] 20-needle bar; 21-connecting section; 22-insertion section;

[0024] 30 - positioning block; 31 - protective layer; 32 - positioning hole; 33 - damping layer. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0026] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0028] The embodiment of the present application provides a fully arc-shaped ablation needle, thereby solving the technical problem in the prior art that the arc-shaped ablation needle has a small puncture interval and may cause harm to the human body when the puncture depth is large.

[0029] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0030] like Figure 1 As shown, the present application provides a fully arcuate ablation needle, comprising: a handle 10 and a needle rod 20 , wherein the needle rod 20 comprises a connecting section 21 and an arcuate insertion section 22 , and the connecting section 21 is fixedly connected to the handle 10 .

[0031] The insertion section 22 inserted into the human body is set to an arc shape. When the ablation needle penetrates deeply, the tearing of the human tissue by the ablation needle is reduced. The ablation needle does not have a large turning angle, and the insertion is smoother.

[0032] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] The ablation needle can be a cryoablation needle, an electric ablation needle, an electric cold ablation needle, or a radiofrequency / microwave ablation needle.

[0034] Specifically, Figure 1 , Figure 2 As shown, the transverse projection range A of the needle bar 20 is 10mm-30mm, the longitudinal projection range B of the needle bar 20 is 150mm-180mm, and the physical shape of the needle bar 20 is limited to a right triangle with a transverse projection range of 10mm-30mm and a longitudinal projection range of 150mm-180mm;

[0035] The insertion section 22 is an arc-shaped section. When the arc-shaped insertion section 22 is inserted into the human body, it will not tear the human tissue outside the path, and the insertion is smoother.

[0036] The insertion section 22 may also be a curve with multiple arcs, and the needle rod 20 model can be adjusted according to different tumor locations, with a wider range of applications.

[0037] Furthermore, the ratio of the insertion section 22 to the length of the needle rod 20 is at least 80%, so that the ratio of the insertion section 22 to the needle rod 20 is suitable for tumors of most depths. When the ratio of the insertion section 22 to the length of the needle rod 20 is 80%, the connecting section 21 will extend the force arm of the handle 10, making the puncture of the needle rod 20 more labor-saving. As the ratio of the insertion section 22 to the length of the needle rod 20 gradually increases, the depth that the needle rod 20 can reach increases.

[0038] Preferably, the insertion section 22 is provided with a scale, and during the puncture process of the needle rod 20, the insertion depth of the needle rod 20 is controlled by observing the scale on the insertion section 22 for reference by the doctor during operation.

[0039] Preferably, at least one electrode area is provided on the insertion section 22, and the non-electrode area of ​​the needle shaft 20 is insulated, so that after the ablation needle is inserted into the tumor, cryoablation and / or electrochemical ablation can be performed on the tumor.

[0040] Further, such as Figure 3 , Figure 4 As shown, the ablation needle further includes a positioning block 30 , a protective layer 31 is provided on the bottom surface of the positioning block 30 , a positioning hole 32 is opened on the positioning block 30 , and the needle rod 20 can be operably inserted into the positioning hole 32 .

[0041] Before the needle rod 20 punctures, the positioning block 30 is first fixed on the human body surface, and the needle rod 20 is inserted into the positioning hole 32. Since the needle rod 20 has an arc-shaped insertion section 22, the positioning hole 32 will limit the plane range of movement of the needle rod 20 to prevent the tip of the needle rod 20 from deflecting and preventing the needle rod 20 from being inserted off-center;

[0042] When the insertion section 22 of the needle rod 20 is an arc shape, the shape of the positioning hole 32 is the same arc shape as the insertion section 22;

[0043] When the insertion section 22 of the needle rod 20 is a curve with multiple arcs, the positioning hole 32 is curved, and the width of the positioning hole 32 is greater than the diameter of the needle rod 20 so that parts of the insertion section 22 with different arcs can pass through the positioning hole 32.

[0044] The ablation needle further includes at least two optical fibers 11 , which are coplanar with the positioning hole 32 , and the two optical fibers 11 are projected onto the positioning block 30 at different positions.

[0045] A light spot is formed on the positioning block 30 by the optical fiber 11, and the direction of the needle rod 20 is determined by the line connecting the light spots. Combined with the limitation of the direction of the needle rod 20 by the positioning hole 32, the direction of the needle rod 20 can be determined.

[0046] Furthermore, a damping layer 33 is fixedly arranged in the positioning hole 32, and the needle rod 20 contacts the damping layer 33. The material of the damping layer 33 can be selected from rubber damping material or polyurethane damping material. During the insertion of the needle rod 20, when the puncture force applied by the doctor to the handle 10 is too large, the insertion direction and depth of the needle rod 20 are not easy to control. The damping layer 33 provides damping force for the movement of the needle rod 20 to prevent the needle rod 20 from moving too far instantly, so that the needle rod 20 can be inserted smoothly.

[0047] Furthermore, a positioning block 12 is disposed on the handle 10 , and an alignment line is disposed on the top surface of the positioning block 30 . Both the positioning block 12 and the alignment line are coplanar with the positioning hole 32 .

[0048] The locating block 12 is arranged on the opposite side of the needle rod 20 where it is bent, and a force applying block 13 is fixedly arranged on the handle 10 , and the force applying block 13 is arranged on the same side of the needle rod 20 where it is bent.

[0049] The direction of the tip of the needle rod 20 is determined by finding the block 12 to be the opposite side of the bend of the needle rod 20. The end of the finding block 12 can also be connected to the observation part 14. The observation part 14 is set to be the same as the bending angle of the insertion section 22 of the needle rod 20, so that the doctor can actually feel the current tilt angle of the needle rod 20, which feels more intuitive and is convenient for operation. During the puncture process of the needle rod 20, the doctor's thumb presses on the finding block 12 to apply downward force to the needle rod 20, and the doctor's index finger and middle finger press on the force block 13, which is convenient for the doctor to apply lateral force to the needle rod 20, making it more convenient for the doctor to apply force to puncture the needle rod 20.

[0050] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0051] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fully arc-shaped ablation needle, characterized in that: include: A handle and a needle rod, wherein the needle rod comprises a connecting section and an arc-shaped insertion section, and the connecting section is fixedly connected to the handle.

2. The fully curved ablation needle according to claim 1, characterized in that: The transverse projection range of the needle bar is 10mm-30mm, and the longitudinal projection range of the needle bar is 150mm-180mm.

3. The fully arc-shaped ablation needle according to claim 1, characterized in that: The insertion section accounts for at least 80% of the needle shaft length.

4. The fully curved ablation needle according to claim 1, characterized in that: The insertion section is provided with scales.

5. The fully curved ablation needle according to claim 1, characterized in that: At least one electrode area is arranged on the insertion section, and the non-electrode area of ​​the needle rod is insulated.

6. The fully arc-shaped ablation needle according to claim 1, characterized in that: It also includes a positioning block, the bottom surface of which is provided with a protective layer, and a positioning hole is opened on the positioning block, and the needle rod can be operably inserted into the positioning hole.

7. The full arc ablation needle according to claim 6, characterized in that: It also includes at least two optical fibers, which are coplanar with the positioning hole, and the two optical fibers are projected onto the positioning block at different positions.

8. The full arc ablation needle according to claim 6, characterized in that: A damping layer is fixedly arranged in the positioning hole, and the needle rod is in contact with the damping layer.

9. The fully arc-shaped ablation needle according to claim 6, characterized in that: The handle is provided with a positioning block, the top surface of the positioning block is provided with an alignment line, and the positioning block and the alignment line are both coplanar with the positioning hole.

10. The full arc ablation needle according to claim 9, characterized in that: The alignment block is arranged on the opposite side of the needle bar bending, and a force applying block is fixedly arranged on the handle, and the force applying block is arranged on the same side of the needle bar bending.

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