Semi-automatic biopsy gun capable of randomly adjusting range

Abstract

The invention belongs to the technical field of biopsy guns, and provides a semi-automatic biopsy gun with the range capable of being adjusted at will. The invention comprises two parts, the first part is the improvement of the method, and the second part is the application of the main body of the invention patent of the auxiliary device. According to the biopsy gun main body, the coaxial needle main body and the auxiliary device, the coaxial needle main body and the biopsy gun main body are used in a matched mode, the auxiliary device is a set, different types of auxiliary devices are selected for use in the puncture process, and the auxiliary device is the key for completing accurate biopsy sampling. In conclusion, the device is reasonable in design, easy to operate and controllable in range, accurate biopsy sampling can be achieved, and the safety of needle biopsy is effectively improved; therefore, the device is suitable for industrial popularization.

Description

Technical Field

[0001] This invention relates to the field of biopsy gun technology, specifically to a semi-automatic biopsy gun with an adjustable range. Background Technology

[0002] Currently, all biopsy guns have a fixed range. The so-called adjustable range refers to switching between two fixed ranges, such as switching from 1.0cm to 2.0cm. However, the size of the tumor is arbitrary. For tumors smaller than the minimum range, a portion of normal tissue will inevitably be cut during the biopsy, increasing unnecessary trauma.

[0003] Therefore, to solve this problem, a biopsy gun with an adjustable range is needed. This project focuses on how to control the range of a biopsy gun. As is well known, a biopsy gun completes a cut in two steps: first, the needle core is ejected (in a fully automatic biopsy gun) or pushed out (in a semi-automatic biopsy gun) to enter the tumor; second, the needle sheath is ejected to complete the sampling. The sampling length is the preset range. Currently, biopsy guns on the market have two ranges and can switch between them, but they cannot achieve a free range.

[0004] Since the range cannot be changed, let's change our approach and see how we can avoid cutting normal tissue during puncture. Our research group has discovered through years of clinical practice that using a coaxial needle can divide the cutting into two parts: effective cutting (within the tumor) and ineffective cutting (within the coaxial needle). One part of the range is within the coaxial needle and does not cut any tissue, which is the so-called ineffective cutting; the other part of the range is within the tumor and cuts tumor tissue, which is the so-called effective cutting.

[0005] The time between ejecting the needle core and ejecting the needle sheath during a fully automatic biopsy gun biopsy is too short and uncontrollable. The needle core of a semi-automatic biopsy gun is inserted into the tumor manually, and the process is controllable. It is the main research object of this study. The routine process of using a semi-automatic biopsy gun is as follows: pull up the spring (pulling once is a short range, pulling twice is a long range), insert the puncture needle into the edge of the tumor under ultrasound guidance, eject the needle core, and press the firing button to complete the sampling.

[0006] Following the standard operating procedure described above only allows for sample collection at a fixed range. Through numerous in vitro experiments, we have continuously optimized the operating procedure, with the main improvements being as follows: First, the coaxial needle is inserted into the tumor... Proximal to the tumor, pull out the needle core. Next, pull the spring twice to ensure cutting force. Third, push the needle core out completely outside the body. Fourth, stop advancing when the front edge of the needle groove reaches the distal end of the tumor. Finally, select an auxiliary device of appropriate length and press the firing button to accurately extract the material. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a biopsy gun with an adjustable range, which enables controllable range and reduces unnecessary trauma during biopsies.

[0008] The present invention provides a semi-automatic biopsy gun with adjustable range, comprising: a semi-automatic biopsy gun body, a coaxial needle body, and an auxiliary device. The auxiliary device is the main body of the present invention and is used in conjunction with the semi-automatic biopsy gun and the coaxial needle during the puncture biopsy process. It is the key to adjusting and controlling the range.

[0009] Furthermore, one of its features is that it breaks with the traditional operating method and improves the method so that after the coaxial needle body is inserted into the tumor, the needle core inside the coaxial needle body is taken out, and the spring of the semi-automatic biopsy gun is pulled twice outside the body to maximize the range and ensure the cutting force. Then, the needle core of the semi-automatic biopsy gun is completely pushed out outside the body and pushed along the coaxial needle until the leading edge of the needle groove reaches the distal end of the tumor and the advancement is stopped.

[0010] Furthermore, its second feature lies in the use of an auxiliary device. After the needle core of the semi-automatic biopsy gun reaches the predetermined position, an auxiliary device of matching length is selected and installed according to the length of the exposed needle core. After the range is fixed, the firing button of the semi-automatic biopsy gun is pressed to perform precise sampling.

[0011] As can be seen from the above technical solution, the beneficial effects of the semi-automatic biopsy gun with adjustable range provided by the present invention are as follows: In practical applications, the auxiliary device adopted in this design adjusts the range of the sampling needle by adjusting the adjustment distance of the sampling needle in the outer needle tube, thereby effectively controlling the sampling area of ​​the biopsy process and reducing sampling trauma to normal healthy parts; moreover, it can be directly used in conjunction with the existing semi-automatic biopsy gun body, greatly improving the application range. Therefore, this device is suitable for industry promotion. Attached Figure Description

[0012] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the description of the specific embodiments or prior art will be briefly introduced below. In all the drawings, the elements or parts are not... It must be drawn to the actual scale.

[0013] Figure 1 This is a schematic diagram of a semi-automatic biopsy gun with an adjustable range. Reference numerals: 1. Semi-automatic biopsy gun body; 2. Coaxial needle body; 3. Auxiliary device. Detailed Description The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0014] The basic implementation examples are as follows: Figure 1 As shown: In this embodiment: This invention provides a semi-automatic biopsy gun with adjustable range, specifically comprising: a semi-automatic biopsy gun body 1; a coaxial needle body 2, which works in conjunction with the semi-automatic biopsy gun body 1; and an auxiliary device 3, which is the main component of this application and works in conjunction with the semi-automatic biopsy gun body 1 and the coaxial needle body 2 during the biopsy process, and is crucial for adjusting and controlling the range. In this embodiment, the operation method of this application breaks with the traditional method. After the coaxial needle body 2 is inserted into the tumor, the needle core inside the coaxial needle body 2 is removed. The spring of the semi-automatic biopsy gun body 1 is pulled twice outside the body to maximize the range and ensure cutting force. Then, the needle core of the semi-automatic biopsy gun 1 is completely pushed out outside the body, and the needle core of the semi-automatic biopsy gun body 1 is advanced along the coaxial needle until the leading edge of the needle groove reaches the distal end of the tumor, at which point the advancement stops. Simultaneously, with the use of the auxiliary device 3, after the needle core of the semi-automatic biopsy gun body 1 reaches the predetermined location, the auxiliary device 3 of matching length is selected and installed according to the exposed length of the external needle core. After fixing the range, the firing button of the semi-automatic biopsy gun body 1 is pressed for precise sampling. In practical applications, the auxiliary device 3 used in this design adjusts the range of the sampling needle by adjusting the adjustment distance within the external needle tube, effectively controlling the sampling area during the biopsy process and reducing sampling trauma to normal healthy sites. Furthermore, it can be directly used with existing semi-automatic biopsy gun bodies 1, greatly expanding its application range. Therefore, this device is suitable for industry promotion.

[0015] In conclusion, this semi-automatic biopsy gun with adjustable range is not only reasonably designed but also easy to operate. It is simple, has a controllable range, and can achieve precise biopsy sampling, effectively improving the safety of puncture biopsy; therefore, this device is suitable for industry promotion.

[0016] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A semi-automatic biopsy gun with adjustable range, comprising: a semi-automatic biopsy gun body; a coaxial needle body: the coaxial needle body is used in cooperation with the semi-automatic biopsy gun body; an auxiliary device: the main body of the invention, used in cooperation with the semi-automatic biopsy gun and the coaxial needle during the puncture biopsy process, is the key to adjust and control the range.

2. A semi-automatic biopsy gun with adjustable range according to claim 1, characterized in that Breaking the traditional operation method, after the coaxial needle body pierces into the tumor, the needle core in the coaxial needle body is taken out, the spring of the semi-automatic biopsy gun is pulled twice in vitro, the range reaches the maximum, the cutting force is guaranteed, then the needle core of the semi-automatic biopsy gun is completely pushed out in vitro, the needle core of the semi-automatic biopsy gun is pushed along the coaxial needle, and the needle slot front edge reaches the far end of the tumor to stop advancing.

3. The semi-automatic biopsy gun with adjustable range of claim 1, wherein The use of the auxiliary device, after the needle core of the semi-automatic biopsy gun body reaches the predetermined position, the auxiliary device with a matching length is selected and installed according to the length of the exposed needle core in vitro, the range is fixed, the trigger button of the semi-automatic biopsy gun is pressed, and accurate sampling is performed.

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