Medical bead string-type positioning and marking device

Abstract

Disclosed is a medical bead string-type positioning and marking device, which comprises a long cylindrical needle tube for puncturing, a marker body for tumor positioning, and a limiting device acting between the marker body and the needle tube. The marker body comprises a bead string and a hook part, the hook part is arranged at a front end of the bead string, the bead string consists of a strand and a plurality of bead bodies uniformly fixed on the strand, and the plurality of bead bodies are spaced apart from each other. The limiting device comprises a limiting block, and an upper shell and a lower shell that are snap-fitted, and an elastic clamping groove corresponding to the position of the bead string is formed in a contact surface of the snap-fitted upper shell and lower shell. This device enables multi-directional marking and positioning of the tumor position of a patient by means of the marker body, thereby providing a basis and guarantee for subsequent precise tumor excision that takes the bead string as a reference. It is particularly suitable for tumor marking and positioning of a breast cancer patient receiving neoadjuvant therapy and planning to conserve the breast.

Description

Medical string bead type positioning marker device TECHNICAL FIELD

[0001] The present application relates to a surgical product, in particular to a medical string bead type positioning marker device which can accurately mark the tumor resection range, and belongs to the field of medical supplies. BACKGROUND

[0002] Local extended resection of breast cancer is one of the standard surgical methods for early breast cancer. Compared with total mastectomy, it has the advantages of small surgical trauma and fast postoperative recovery, and on the premise of ensuring the treatment effect of the tumor, it retains the shape of the breast, which is conducive to the establishment of a positive psychological state for patients after surgery. At present, local extended resection of breast cancer mainly depends on the tactile sensation of the surgeon's hand. For tumors that cannot be touched or are small, a barbed needle is generally used to mark the tumor to mark the tumor. The marking method has the problems of inaccurate resection and sometimes excessive resection of normal tissue.

[0003] In recent years, neoadjuvant chemotherapy has become more and more common in the treatment of breast cancer. Because the tumor may shrink or even disappear after neoadjuvant chemotherapy, it is necessary to place a metal marker clip in advance at the center or periphery of the tumor or to perform body tattooing to mark the tumor position. Then, before the breast-conserving surgery, a barbed needle is placed under the guidance of ultrasound to determine the tumor resection range. The surgeon finally completes the breast-conserving surgery according to the range of the body tattooing and the position of the barbed needle, combined with the tactile sensation of the hand.

[0004] In the above process, the body tattooing can only mark the approximate range. Due to the change in the relative position of the gland and the body marking point during the operation, the positioning is not accurate. The metal marker clip can only mark the center of the tumor due to cost or clinical operational convenience. Even if the metal marker clip is placed at the edge of the tumor, it can only be marked as a point, not as a line or a surface. At the same time, the placement of the barbed needle under the guidance of ultrasound for positioning of the metal marker clip not only requires a second puncture of the patient, but also has the problems of inaccurate or difficult positioning for calcified lesions. In addition, the barbed needle is made of metal material as a whole, which has the problem of abnormal conduction, causing certain trouble and influence to the operation process.

[0005] Therefore, in order to improve the tumor boundary marking method and achieve 'precise resection' of the tumor, the present application aims to design a medical string bead type positioning marker device. SUMMARY

[0006] In view of the above, the present application aims to provide a medical string bead type positioning marker device which can significantly simplify the preoperative tumor positioning steps and facilitate the tumor resection process, in order to overcome the shortcomings of the existing body tattooing, metal marker clip or barbed needle positioning methods, meet the clinical needs of tumor surgery, and improve the treatment effect of breast-conserving surgery for breast cancer, especially for breast-conserving surgery for breast cancer receiving neoadjuvant therapy.

[0007] The present application is realized by the following technical solutions:

[0008] The medical string-bead type positioning marker device comprises a long tubular needle cylinder for puncture, a marker body for tumor positioning, and a set of limiting devices acting between the marker body and the needle cylinder. The needle opening of the head of the needle cylinder is beveled. The marker body comprises a string bead and a hook portion, the hook portion is arranged at the front end of the string bead, the front end of the marker body penetrates into the needle cylinder, and the rear end of the marker body is exposed outside the tail of the needle cylinder. The string bead is composed of a string and a plurality of beads uniformly fixed on the string, and the plurality of beads are spaced apart from each other. The limiting device comprises upper and lower shells clamped to each other and a limiting block. The limiting block is arranged on the needle cylinder. The upper and lower shells are clamped to the tail of the needle cylinder after being limited by the limiting block, and the contact surface of the upper and lower shells clamped to each other is provided with elastic clamping grooves corresponding to the positions of the string beads.

[0009] The elastic clamping grooves are open grooves, and the surface of the open grooves is covered with a silica gel layer or a sponge layer.

[0010] The medical string-bead type positioning marker device comprises a long tubular needle cylinder for puncture, a long tubular needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marker body for tumor positioning, and a set of limiting devices acting between the marker body and the needle cylinder. The needle opening of the head of the needle cylinder is beveled. The marker body comprises a string bead and a hook portion, the hook portion is arranged at the front end of the string bead, the hook portion penetrates through the inner cylinder and is located in the needle cylinder. The string bead is composed of a string and a plurality of beads uniformly fixed on the string, and the plurality of beads are spaced apart from each other. The rear end of the inner cylinder protrudes outside the tail of the needle cylinder, and the front end of the inner cylinder abuts against the bottom of the hook portion. The limiting device comprises two limiting blocks and upper and lower shells clamped to each other. The two limiting blocks are arranged on the needle cylinder and the inner cylinder respectively. The upper and lower shells are clamped to the needle cylinder and the inner cylinder after being limited by the two limiting blocks.

[0011] The marker body is distributed with fluorescent material and / or developing material.

[0012] The beads are sequentially or intermittently provided with numbers.

[0013] The beads are sequentially or intermittently provided with colors.

[0014] The beads are circular, elliptical, fusiform or cylindrical.

[0015] The hook portion is cylindrical as a whole, and at least one annular groove is arranged near the front end of the cylindrical hook portion.

[0016] The upper and lower shells clamped to each other are provided with cavities for embedding and clamping the limiting blocks; or, the upper and lower shells clamped to each other are provided with limiting holes or limiting grooves for embedding and clamping the limiting blocks.

[0017] The medical string bead type positioning marker device has the following advantages:

[0018] 1. The beads are evenly fixed on the string and spaced from each other, so that the string beads have good bending performance, facilitating the marking process and the subsequent cutting process. At the same time, the beads are made of heat-resistant polymer materials, which can avoid being cut off by a scalpel or an electric knife to the greatest extent.

[0019] 2. The marker body composed of string beads and hooks can be easily embedded in the surrounding tissue to avoid displacement of the marker body. The use of multiple marker bodies at the same time can mark and position the tumor position from multiple directions, providing a basis and guarantee for subsequent precise tumor resection with the string beads as a reference.

[0020] 3. The numbering, color and arrangement order of different shaped beads arranged on the beads can quickly and clearly determine the length of the string beads during the operation, which facilitates the operation process and the postoperative examination of whether there are string beads remaining in the body. At the same time, by adding fluorescent materials to the marker body, the position of the marker body can be detected by exciting fluorescence with a far-infrared fluorescence detector, which facilitates the operation process.

[0021] 4. The positioning process of the marker body and the needle cylinder is facilitated by the setting of the limiting device, which meets the needs of clinical operation.

[0022] 5. The inner cylinder structure facilitates the pushing and positioning process of the marker body, improving the accuracy and reliability of the pushing.

[0023] 6. The overall structure is simple and easy to operate, which can fully meet the needs of positioning and indication before tumor resection, especially for tumor positioning and marking of patients receiving neoadjuvant therapy and planning breast conservation. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Fig. 1 is a schematic view of the combination structure of the medical string bead type positioning marker device according to the present application;

[0026] Fig. 2 is a schematic view of the combination structure of the medical string bead type positioning marker device according to the present application;

[0027] Fig. 3 is an enlarged sectional view of a part of Fig. 2;

[0028] Fig. 4 is a schematic view of the combination structure of the medical string bead type positioning marker device according to the present application;

[0029] Figure 4 is a schematic diagram of the combination structure of a medical string-bead type positioning marker device according to the present application. DETAILED DESCRIPTION

[0030] The present application will be further described in detail below with reference to Figure 1:

[0031] The medical string-bead type positioning marker device according to the present application comprises a long tubular needle cylinder 1 for puncture, a marker body for tumor positioning, and a set of limiting devices acting between the marker body and the needle cylinder 1.

[0032] The head of the long tubular needle cylinder 1 for puncture is needle-shaped. In order to facilitate the puncture process and the subsequent fast hanging and positioning of the marker body with the patient tissue, the needle opening 11 is bevel-shaped, which is beneficial for observing and controlling the marker body to complete the hanging operation.

[0033] The marker body comprises a string bead 8 and a hook portion 7, and the hook portion 7 is arranged at the front end of the string bead 8. The string bead 8 is composed of a string and a plurality of beads uniformly fixed on the string, and the plurality of beads are spaced from each other. In this example, the beads are circular, and the beads are made of heat-resistant polymer materials. Of course, the beads can also be oval, shuttle-shaped or cylindrical. After the front end of the marker body penetrates into the needle cylinder 1, the rear end of the marker body is exposed outside the tail of the needle cylinder 1. In order to facilitate the location of the marker body during the operation, in this example, the marker body is mixed with fluorescent materials, and a far-infrared detector can be used to assist in detecting the position. In order to further facilitate the operation process, in this example, the beads are colored in a fixed interval manner, and the length of the string bead is determined by the color and the fixed interval number. Of course, different shaped beads can also be arranged in a fixed interval manner, or even a code can be directly arranged on the beads in a sequential or interval arrangement, which can also achieve the purpose of determining the length of the string bead 8 during the operation. The hook portion 7 is cylindrical as a whole, and an annular groove 9 is arranged near the front end of the cylindrical hook portion 7. The hook portion 7 can be hung with the patient tissue by using the annular groove 9, and the string bead 8 connected thereto can also be embedded in the patient tissue and complete the position fixation, and then the multi-directional positioning and marking of the tumor position of the patient can be completed by the hanging of a plurality of marker bodies.

[0034] The limiting device comprises a limiting block 2 and upper and lower shells 3, 4 that are clamped to each other. In this case, the limiting block 2 is in the shape of ‘]’, and the ‘]’ shaped limiting block 2 is arranged at the tail position of the needle cylinder 1. A cavity 5 for embedding and clamping the ‘]’ shaped limiting block 2 is arranged between the upper and lower shells 3, 4 that are clamped to each other. The upper and lower shells 3, 4 are clamped and fixed at the tail of the needle cylinder 1 after being limited by the limiting block 2. An elastic clamping groove 6 corresponding to the position of the string bead 8 is arranged on the contact surface of the upper and lower shells 3, 4 that are clamped to each other. In this case, the elastic clamping groove 6 is an open groove, and a silica gel layer is arranged on the surface of the open groove. The exposed string bead 8 can be clamped by the deformation of the silica gel layer after the upper and lower shells 3, 4 are limited, and then the limiting of the needle cylinder 1 is formed. Of course, the limiting block 2 can also be distributed on both sides of the needle cylinder 1, and the limiting mode of the limiting block 2 and the upper and lower shells 3, 4 can also be a limiting hole or a limiting groove clamping.

[0035] Before the specific marking operation, first, the string bead 8 in the needle cylinder 1 is pushed, so that the hook part 7 at the front end of the string bead 8 is close to the needle opening 11 at the front end of the needle cylinder 1 in a slope shape, then the limiting block 2 is wrapped and embedded into the clamping cavity 5 by the upper and lower shells 3, 4, finally, the upper and lower shells 3, 4 are clamped to each other, the limiting connection of the upper and lower shells 3, 4 at the tail of the needle cylinder is completed, at the same time, the string bead 8 exposed outside the limiting block 2 is clamped by the elastic clamping groove 6, and the limiting between the needle cylinder 1 and the marking body is completed. In the specific marking operation, the needle cylinder 1 is used for patient tissue puncture, the position of the needle cylinder 1 is observed by an imaging device such as ultrasound or molybdenum target, after puncture, the upper and lower shells 3, 4 are opened, the string bead 8 is pushed and the hook part 7 is stretched out from the needle opening 11, after the annular groove 9 on the hook part 7 is hung on the patient tissue, the string bead 8 is pushed inward while the needle cylinder 1 is pulled outward to exit from the patient body, the marking body is left in the patient body, the excess string bead 8 exposed outside the patient body is cut off, and the fixed interval different color beads can quickly mark the length of the string bead 8 remaining in the patient body, and then the marking process is completed. By repeating the above process for many times, the string bead 8 on the marking body can be used for multi-directional positioning and marking of the tumor position of the patient, the color difference between the marking body and the human tissue can be observed and the position of the marking body can be determined at any time, if necessary, the fluorescent material mixed in the marking body can be detected by a far infrared fluorescent probe to determine the marking position, which provides convenience and help for accurate tumor resection with the string bead marking range as a reference, and improves the efficiency and accuracy of the tumor “precise resection”.

[0036] Of course, the above description is only one embodiment, as shown in FIG. 2, FIG. 3, the medical bead positioning marker device described in the application can also include a long cylindrical needle cylinder 1 for puncture, an inner cylinder 12 inserted into the needle cylinder 1, a marker for tumor positioning, and a set of limiting devices acting between the inner cylinder 12 and the needle cylinder 1. In addition to having the same needle cylinder 1 and marker as the above structure, the inner cylinder 12 for pushing the marker is inserted into the needle cylinder 1, the rear end of the inner cylinder 12 protrudes outside the tail of the needle cylinder 1, and after the marker passes through the inner cylinder 12, the front end of the inner cylinder 12 is abutted on the bottom of the hook part 7 at the front end of the marker, so as to simplify the subsequent pushing and hooking process of the marker, and improve the convenience and flexibility of the pushing process. At the same time, in order to simplify the limiting process, the limiting device includes two ']' shaped limiting blocks 2, the two ']' shaped limiting blocks 2 are arranged on the needle cylinder 1 and the inner cylinder 12 respectively, and the upper and lower shells 3, 4 are clamped by the two limiting blocks 2, and then clamped on the needle cylinder 1 and the inner cylinder 12, thereby completing the limiting between the inner cylinder 12 and the needle cylinder 1. Since the front end of the inner cylinder 12 is abutted on the bottom of the hook part 7 at the front end of the marker, the marker can also complete the limiting in the needle cylinder 1. Embodiment

[0037] As shown in FIG. 4, the medical bead positioning marker device described in the application includes a long cylindrical needle cylinder 1 for puncture, a marker for tumor positioning, and a set of limiting devices acting between the marker and the needle cylinder 1. Among them, the head of the needle cylinder is needle-shaped, and the opening of the needle head is inclined. The marker includes a string of beads 8 and a hook part, the string of beads 8 is composed of a string and a plurality of beads uniformly fixed on the string, and the plurality of beads are spaced apart from each other. In order to intuitively feedback the position information of the string of beads 8, in this example, numbers are sequentially arranged on each bead. The hook part is arranged at the front end of the string of beads 8. After the front end of the marker is inserted into the needle cylinder 1, the rear end of the marker is exposed outside the tail of the needle cylinder 1. The limiting device includes a sheet-shaped limiting block 15 and upper and lower shells clamped with each other. The sheet-shaped limiting block 15 is an integral structure with the needle cylinder 1, the sheet-shaped limiting block 15 is inserted into the limiting hole 16 of the upper and lower shells, and then the upper and lower shells are clamped with each other to complete the limiting connection between the upper and lower shells and the needle cylinder 1. The contact surface of the upper and lower shells clamped with each other is provided with an elastic clamping groove 6 corresponding to the position of the string of beads 8, and the string of beads 8 and the needle cylinder 1 are fixed in position through the elastic clamping groove 6.

[0038] Before the specific marking operation, the hook part of the marker body at the front end in the needle cylinder 1 is as close as possible to the needle head opening, and the position of the marker body is fixed with the needle cylinder 1 under the clamping of the upper and lower shells. In the specific marking operation, the needle cylinder 1 is guided to puncture by using the imaging device, after puncturing in place, the upper and lower shells are opened, the string bead 8 is directly pushed to make the hook part stretch forward, after the hook part is connected with the patient's tissue, the string bead 8 is pushed inward and the needle cylinder 1 is withdrawn outward at the same time, the marker body is left in the patient's body, the excess string bead 8 exposed outside the patient's body is cut off, and the multi-directional marking and positioning of the tumor edge position is completed. Embodiment

[0039] As shown in Fig. 5, the medical string bead type positioning and marking device comprises a long cylindrical needle cylinder 1 for puncture, an inner cylinder 12 sleeved in the needle cylinder 1, a marker for tumor positioning, and a limiting device acting between the inner cylinder 12 and the needle cylinder 1. The head of the needle cylinder is needle-shaped, and the needle head opening is beveled. The rear end of the inner cylinder 12 protrudes outside the tail of the needle cylinder 1, and the marker passes through the inner cylinder 12, and the front end of the inner cylinder 12 is on the bottom of the hook part at the front end of the marker. In order to limit the relative position between the inner cylinder 12 and the needle cylinder 1, the limiting device comprises two sheet-shaped limiting blocks 15 and the upper and lower shells clamped with each other. The two sheet-shaped limiting blocks 15 are arranged at the tail of the needle cylinder 1 and the tail of the inner cylinder 12 respectively, and the upper and lower shells clamped with each other are respectively provided with limiting holes 16 and limiting grooves 18, and the limiting holes 16 and the limiting grooves 18 are respectively matched with the two sheet-shaped limiting blocks 15 for clamping. Through the limiting of the sheet-shaped limiting blocks 15 and the clamping of the upper and lower shells, the relative position between the inner cylinder 12 and the needle cylinder 1 is fixed.

[0040] Before the specific marking operation, the relative position between the inner cylinder 12 and the needle cylinder 1 is fixed, the front end of the inner cylinder 12 is on the bottom of the hook part, and the position of the marker in the inner cylinder 12 and the needle cylinder 1 is also fixed. In the specific marking operation, the needle cylinder 1 is used for accurate puncture, after puncturing in place, the upper and lower shells are opened, the inner cylinder 12 is pushed to drive the marker to stretch forward, after the hook part is connected with the patient's tissue, the marker is pushed inward and the needle cylinder 1 and the inner cylinder 12 are withdrawn, then the excess string bead exposed outside the patient's body is cut off, and the multi-directional positioning and marking of the tumor position in the patient's body is completed.

[0041] The above description is only the preferred embodiment of the present application and the explanation of the technical principles applied, and is not intended to limit the scope of the application claimed, but only represents the preferred embodiment of the present application. Those skilled in the art should understand that the scope of the application involved in the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by the combinations of the above technical features or their equivalent features without departing from the inventive concept. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

Claims

1. A medical beaded positioning marker device, characterized in that, The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder.

2. The medical beaded positioning marker device of claim 1, wherein, The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer.

3. A medical beaded positioning marking device, characterized in that: The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder.

4. The medical beaded marker device according to claim 1 or 3, wherein The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer.

5. The medical beaded marker device according to claim 1 or 3, wherein The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder.

6. The medical beaded marker device of claim 1 or 3, wherein, The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer.

7. The medical beaded marker device of claim 1 or 3, wherein, The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder.

8. The medical beaded marker device of claim 1 or 3, wherein, The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer.

9. The medical beaded marker device of claim 1 or 3, wherein, The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder.

10. The medical beaded marker device of claim 1 or 3, wherein, The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to a tumor puncture device, which comprises a long needle cylinder for puncture, an inner cylinder sleeved in the needle cylinder, a marking body for tumor positioning and a limiting device for limiting the marking body and the needle cylinder. The elastic clamping groove is an open groove, and the surface of the open groove is covered with a silica gel layer or a sponge layer. The application relates to

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