Bone and soft tissue tumor biopsy needle

Abstract

This invention provides a needle for bone and soft tissue tumor biopsy, comprising a needle body, a ring-taking probe, and a pusher. The needle body includes an outer cannula and a core. A channel is formed through the inner part of the outer cannula. The core is inserted into and exits the channel during puncture. The two ends of the outer cannula are a first end and a second end, respectively. The two ends of the core are a third end and a fourth end, respectively. The third end is a needle tip that extends beyond the first end, and the fourth end is used to engage with the second end to form a handle. A depth fixation device is installed on the outer wall of the outer cannula for adsorption onto the tissue surface. The ring-taking probe is inserted into the channel of the outer cannula after the core is removed to extract tissue samples. The distal inner wall surface of the ring-taking probe has a barbed structure. The pusher is inserted into the outer cannula after sample extraction to completely push out any remaining tissue from the outer cannula. This invention can improve the accuracy and comfort of bone and soft tissue tumor biopsy, reduce the sampling failure rate during puncture, and increase the sample volume.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a needle for puncture biopsy of bone and soft tissue tumors. Background Technology

[0002] Bone and soft tissue tumor biopsy is a common clinical procedure used to obtain tissue samples for definitive diagnosis. Currently, most commercially available soft tissue tumor biopsy needles are thin-needle, resulting in insufficient sample volume. This often leads to false negatives in pathological results or prevents immunohistochemical examination due to insufficient sample size. Repeated punctures are necessary to increase sample volume, increasing patient discomfort and potentially damaging surrounding healthy tissue. Traditional bone aspiration needles are often used for large soft tissue tumors, but the limited contraction of the internal loop probe tip makes it difficult to extract softer tumor tissue. Therefore, developing a biopsy needle suitable for both bone and soft tissue tumors, increasing the sample volume per puncture and improving the stability of the procedure, is of significant clinical importance for the biopsy of bone and soft tissue tumors. Utility Model Content

[0003] To address the aforementioned technical problems, a needle for puncture and biopsy of bone and soft tissue tumors is provided. The technical means employed in this invention are as follows:

[0004] A biopsy needle for bone and soft tissue tumors includes: a needle body, a ring-taking probe, and a push rod. The needle body includes an outer tube and a needle core. The inner part of the outer tube has a through-hole. The needle core is used to insert into and exit the channel during puncture. The two ends of the outer tube are a first end and a second end, respectively. The two ends of the needle core are a third end and a fourth end, respectively. The third end is a needle tip that extends out of the first end. The fourth end is used to engage with the second end to form a handle. A depth fixation device is installed on the outer wall of the outer tube for adhering to the tissue surface.

[0005] The circumcised probe is used to be inserted into the channel of the outer cannula after the needle core is removed to extract tissue samples; the distal inner wall surface of the circumcised probe is provided with a barb structure;

[0006] The push rod is used to insert into the outer sheath after the circumferential probe is pulled out, so as to completely push out the remaining tissue in the outer sheath after the tissue is taken.

[0007] Furthermore, the barb structure includes a plurality of spaced-apart barb blades.

[0008] Furthermore, the tip of the first end is provided with a tapered structure.

[0009] Furthermore, the depth fixing device is a circular, concave disc, and the depth fixing device is rotatably and slidably connected to the outer sleeve.

[0010] Furthermore, the needle body is made of high-strength stainless steel.

[0011] Furthermore, the material of the depth fixing device is nitrile rubber.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The bone and soft tissue tumor biopsy needle provided by this utility model can improve the accuracy and comfort of bone and soft tissue tumor biopsy, reduce the sampling failure rate during the puncture process, and increase the amount of sample taken.

[0014] 2. The bone and soft tissue tumor puncture biopsy needle provided by this utility model has a tapered tip design, which can effectively reduce resistance during the puncture process and improve accuracy.

[0015] 3. The bone and soft tissue tumor puncture biopsy needle provided by this utility model has a depth fixation device that can be adsorbed and fixed on the surface of the puncture tissue during the puncture process, ensuring the insertion depth of the puncture needle and the stability of the needle body after insertion, and ensuring that the puncture needle will not come out as a whole or deviate in direction during the process of pulling out the inner core, thereby avoiding accidental injury and damage.

[0016] 4. The bone and soft tissue tumor puncture biopsy needle provided by this utility model has a barbed structure at the distal end of the circumferential probe that ensures that all the soft tissue sample can be taken out.

[0017] 5. The bone and soft tissue tumor puncture biopsy needle provided by this utility model has a push rod that can completely push out the tissue remaining in the outer cannula after sampling to ensure the smooth operation of subsequent sampling.

[0018] Based on the above reasons, this utility model can be widely promoted in fields such as medicine. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an exploded view of the puncture needle of this utility model.

[0021] Figure 2 This is a front view of the puncture needle body of this utility model.

[0022] Figure 3 This is a side view of the puncture needle body of this utility model.

[0023] Figure 4 This is a front view of the needle core of the needle body of this utility model.

[0024] Figure 5 This is a side view of the needle core of the needle body of this utility model.

[0025] Figure 6 This is a front view of the outer tube of the needle body of this utility model.

[0026] Figure 7 This is a side view of the outer tube of the needle body of this utility model.

[0027] Figure 8 This is a front view of the depth fixing device of this utility model.

[0028] Figure 9 This is a bottom view of the depth fixing device of this utility model.

[0029] Figure 10 This is a front view of the looping probe of this utility model.

[0030] Figure 11 This is a side view of the looping probe of this utility model.

[0031] Figure 12 This is a schematic diagram of the push rod of this utility model.

[0032] In the diagram: 1. Needle body; 2. Handle; 3. Depth fixing device; 4. Ring probe; 5. Push rod; 6. Barbed blade; 7. Conical structure. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0034] Example 1

[0035] This invention provides a needle for puncture biopsy of bone and soft tissue tumors, which is suitable for clinical tumor puncture biopsy-related treatment procedures. It aims to improve the accuracy and comfort of puncture biopsy of bone and soft tissue tumors, reduce the sampling failure rate during the puncture process, and increase the amount of sample obtained.

[0036] The biopsy needle of this invention includes a needle body 1, a ring-taking probe 4, and a push rod 5. The needle body 1 includes a needle core, an outer sheath, a handle 2, and a depth fixation device 3 located on the outer sheath. One end of the needle body 1 is the sharp puncture end of the inner needle core, and the other end is connected to the handle 2. The needle body 1 is a combination of the needle core and the outer sheath, used for puncturing to the tumor site. The needle body 1 is made of high-strength stainless steel.

[0037] Specifically, the inner part of the outer tube has a through channel, and the needle core is used to insert into and exit the channel during puncture. The two ends of the outer tube are the first end and the second end, and the two ends of the needle core are the third end and the fourth end. The third end is the needle tip, which exits through the first end, and the fourth end is used to fasten with the second end to form a handle 2. A depth fixation device 3 is installed on the outer wall of the outer tube, which is used to adhere to the tissue surface.

[0038] The ring-fetch probe 4 is used to extract tissue samples by inserting it into the channel of the outer cannula after the needle core is removed; the distal end of the ring-fetch probe 4 has a barbed structure. This distal end is the end of the ring-fetch probe 4 closest to the first end after insertion into the outer cannula.

[0039] The push rod 5 is used to insert into the outer sheath after the tissue sample is taken after the ring probe 4 is pulled out, so as to completely push out the remaining tissue in the outer sheath after the tissue sample is taken.

[0040] Use of this utility model:

[0041] First, the needle core is inserted into the outer tube to form the needle body 1. During operation, the user applies force using the handle 2 to insert the needle body 1 into the target tissue. After reaching the set depth, the depth fixing device 3 is attached to the tissue surface to fix the needle body 1. Then, the needle core is removed, and the loop probe 4 is inserted into the outer tube. To improve sampling efficiency, the inner wall surface of the loop probe 4 is provided with a barbed structure, which includes multiple spaced barbs 6 to ensure that the sample does not slip out during the sampling process.

[0042] Example 2

[0043] Based on Embodiment 1, this utility model is also equipped with a depth fixing device 3.

[0044] The biopsy needle in this embodiment includes:

[0045] Needle body 1: includes a needle core with a pointed tip and an outer tube with a tapered tip design for puncturing target tissue;

[0046] Handle 2: Used for holding and applying piercing force;

[0047] Loop probe 4: Can be replaced by a needle core and inserted into the outer sheath for receiving tissue samples;

[0048] Depth fixing device 3: Located between needle body 1 and handle 2, used to adjust the insertion depth of needle body 1 and fix needle body 1;

[0049] Push rod 5: It can completely push out the tissue remaining in the outer tube after sampling to ensure the smooth sampling process.

[0050] In this embodiment, the depth fixation device 3 is a circular, concave disc, and is made of nitrile rubber. The depth fixation device 3 is connected between the needle body 1 and the handle 2, and is rotatably and slidably connected to the outer sheath. By rotating and sliding, the insertion depth can be set according to the specific condition of different patients, thereby avoiding sampling operations that are too deep or too shallow.

[0051] Example 3

[0052] Based on Example 2, the tip of the needle body 1 (the tip of the first end) is designed as a conical structure 7, which improves the cutting ability, makes it smoother when piercing the tissue, effectively reduces the pain to the patient, and enhances the integrity and quality of the sample.

[0053] In this invention, the needle body 1 is made of high-strength stainless steel, and the tip adopts a conical design (conical structure 7), which can effectively reduce resistance during puncture and improve accuracy. The depth fixation device 3 is made of nitrile rubber, which can adhere and fix to the surface of the punctured tissue during puncture, ensuring the insertion depth of the puncture needle and the stability of the needle body after insertion, ensuring that the puncture needle will not come out as a whole or deviate in direction during the removal of the inner core, thereby avoiding accidental injury and damage. The barbed structure (barbed plate 6) at the distal end of the ring-taking probe 4 can ensure that all the soft tissue to be sampled can be taken out. The push rod 5 can completely push out the tissue remaining in the outer cannula after sampling to ensure smooth sampling again.

[0054] With the bone and soft tissue tumor puncture needle of this invention, operators can perform bone and soft tissue tumor puncture operations more accurately and safely, significantly improving the safety and comfort of the operation.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A needle for puncture biopsy of bone and soft tissue tumors, characterized in that, include: The needle body (1), the ring-taking probe (4), and the push rod (5) are provided. The needle body (1) includes an outer tube and a needle core. The inner part of the outer tube has a through-hole. The needle core is used to insert into the channel and exit the channel during puncture. The two ends of the outer tube are the first end and the second end, respectively. The two ends of the needle core are the third end and the fourth end, respectively. The third end is the needle tip. The needle tip exits the first end. The fourth end is used to fasten with the second end to form a handle (2). A depth fixation device (3) is installed on the outer wall of the outer tube. The depth fixation device (3) is used to adhere to the tissue surface. The circumcised probe (4) is used to be inserted into the channel of the outer cannula after the needle core is pulled out to extract tissue samples; the distal inner wall surface of the circumcised probe (4) is provided with a barb structure; The push rod (5) is used to insert into the outer sheath after the circumferential probe (4) is pulled out, so as to completely push out the remaining tissue in the outer sheath after the circumferential probe is pulled out.

2. The bone and soft tissue tumor biopsy needle of claim 1, wherein, The barb structure includes multiple spaced-apart barb blades (6).

3. The bone and soft tissue tumor biopsy needle of claim 1, wherein, The tip of the first end is provided with a tapered structure (7).

4. The bone and soft tissue tumor biopsy needle of claim 1, wherein, The depth fixing device (3) is a circular, concave disc, and the depth fixing device (3) is rotatably and slidably connected to the outer sleeve.

5. The bone and soft tissue tumor biopsy needle of claim 1, wherein, The needle body (1) is made of high-strength stainless steel.

6. The bone and soft tissue tumor biopsy needle of claim 1, wherein, The material of the depth fixing device (3) is nitrile rubber.

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