A surgical biopsy device

Abstract

The utility model relates to puncture needle technical field especially surgical puncture biopsy device, including needle tube and needle core, needle tube is provided with the needle pass through, needle core is placed in needle pass through, needle core one end is provided with needle head, the other end is fixedly connected with needle tube through limiting safety device, needle tube one end is provided with handle, needle core is away from needle head one end and is provided with knob, limiting safety device sets up between handle and knob, the outer surface of needle head is provided with brush section, limiting safety device includes annular lock piece, annular lock piece is open ring structure, forms one convenient to tear and pull opening, annular lock piece is connected with handle and knob through a plurality of connecting points. The surgical puncture biopsy device sets up limiting safety device between needle core and needle tube, avoids needle core in advance and stretches out and cannot accurate sampling, at the same time, the head of needle core has been improved, adopts relatively soft and efficient brush head structure, can reduce the damage to normal tissue around tumor cell while obtaining enough tissue sample.

Description

Technical Field

[0001] This utility model relates to the field of puncture needle technology, and in particular to a surgical puncture biopsy device. Background Technology

[0002] In existing technologies, surgical biopsy to obtain tumor cells for pathological examination is currently the method for identifying tumors, lymph nodes, etc., before further treatment such as surgery. Tumor cell biopsy mainly includes fine-needle aspiration biopsy and core needle biopsy. Fine-needle aspiration biopsy involves inserting a needle into the center of the nodule and repeatedly withdrawing and re-entering it within different needle tracts to obtain tumor cells. However, it has problems such as inconsistent sample volume, inability to guarantee success on the first attempt, and the potential risk of needle tract implantation.

[0003] A search revealed a patent with publication number CN212326456U, which discloses a thyroid fine-needle biopsy device, including a sheath and a puncture needle. The puncture needle is located inside the sheath, and a spiral blade is set at the end of the needle core away from the needle handle to facilitate sampling and prevent tissue sample loss, ensuring that sufficient tissue sample is obtained during puncture. However, in actual clinical practice, it has been found that the spiral blade of this device requires the wrist to move back and forth to remove cells from inside the tumor during puncture, which can cause additional damage to the normal tissue surrounding the tumor cells, increasing the patient's postoperative pain and the probability of complications. Moreover, there is no safety device between the sheath and the puncture needle, and the puncture needle can easily extend out of the sheath before the sheath is in place, making it difficult to accurately locate and puncture some nodules in special locations or small sizes. Utility Model Content

[0004] To address the lack of safety between the needle tube and the needle core in existing methods, which affects puncture accuracy, this invention provides a surgical biopsy device. By setting a limiting safety between the needle core and the needle tube, the needle core is ensured to remain within the needle tract before the needle tube is fully inserted, preventing premature extension of the needle core and thus improving sampling accuracy and safety. Furthermore, the needle core head has been improved, abandoning the spiral blade design that easily causes additional damage and adopting a gentler and more efficient brush head structure. This allows for the acquisition of sufficient tissue samples while minimizing damage to surrounding normal tissue, thereby reducing postoperative pain and the likelihood of complications for patients.

[0005] This invention provides a surgical biopsy device, comprising a needle tube and a needle core. The needle tube has a through-hole, and the needle core is placed within the through-hole. One end of the needle core has a needle tip, and the other end is fixedly connected to the needle tube via a locking device, ensuring the needle tip is positioned within the through-hole. After the needle tube is accurately inserted to the target location, the locking device is released, and the needle core is gently pushed out of the through-hole for tissue sample collection.

[0006] Furthermore, a handle is provided at one end of the needle tube, and a knob is provided at the end of the needle core away from the needle tip. A safety stop is located between the handle and the knob, and a brush section is provided on the outer surface of the needle tip. The safety stop can fix the relative position of the needle core and the needle tube. The bristles of the brush section are made of soft and elastic material, which can effectively obtain sufficient tissue samples when contacting tumors or nodules.

[0007] Furthermore, the safety feature includes a ring-shaped locking plate, which has an open-loop structure with an opening for easy tearing. The ring-shaped locking plate is connected to the handle and knob via several connection points. When it is necessary to release the safety feature, medical personnel can easily tear the ring-shaped locking plate through the opening to disconnect the connection points, and then push the knob to abut against the handle, allowing the needle core to extend precisely a certain distance from the needle path.

[0008] Furthermore, the lower surface of the annular locking plate is fixedly connected to the upper surface of the handle through several connection points, and the knob abuts against the upper surface of the annular locking plate. The annular locking plate and the knob are concentrically arranged. This concentric arrangement ensures good stability of the annular locking plate in separating the knob and the handle.

[0009] Furthermore, the handle has a disc for securing the annular locking plate, with the disc and the annular locking plate concentrically positioned. This ensures a more secure connection between the annular locking plate and the handle, preventing premature breakage of the connection point due to accidental collisions or other external forces when the annular locking plate is not being pulled. Simultaneously, the disc provides a flat mounting surface for the annular locking plate, making the connection between the annular locking plate and the handle tighter, thereby improving the reliability of the limit safety mechanism in fixing the relative position of the needle core and needle tube.

[0010] Furthermore, it also includes a surface locator for fixing the needle, which has at least one clamping seat adapted to the handle. After the needle is inserted into place, it is fixed by the surface locator, providing stable support for the subsequent removal of the annular locking plate, and holding the needle in place to prevent displacement or shaking during the operation.

[0011] Furthermore, the clamping base is made of plastic and has a clamping opening. The outer surface of the handle is provided with a waist-shaped part that matches the clamping opening. The clamping opening made of plastic can undergo a certain degree of elastic deformation, which facilitates the stable insertion of the waist-shaped part.

[0012] Furthermore, the surface locator is a semi-circular support with an arc-shaped groove. The clamping seat is slidably positioned within the arc-shaped groove via a slider and secured with locking bolts. A contoured pad that contacts the body surface is also located at the bottom of the semi-circular support, with an clearance opening in the center. The combination of the arc-shaped groove and the slider allows the clamping angle to be adjusted according to the puncture angle. The contoured pad is made of soft and elastic silicone material, which better conforms to the curves of the human body surface, increasing the contact area and improving the stability of the surface locator.

[0013] The beneficial effects of this utility model are as follows: This invention provides a surgical biopsy device. By setting a limiting safety between the needle core and the needle tube, the needle core is ensured to remain within the needle channel before the needle tube is fully inserted, preventing premature extension of the needle core and thus improving the accuracy and safety of sampling. The brush section at the needle tip allows for better collection of cell samples during the puncture process, reducing damage to tumor cells or surrounding normal tissue while obtaining sufficient tissue samples. The use of a body surface locator and a matching clamp effectively fixes the needle tube, improving the stability of subsequent ring-shaped locking clip removal and needle core sampling. The contour pad increases the contact area with the body surface, ensuring good fit and improving the stability of the device placement. This provides reliable support for the biopsy operation, making the entire biopsy process more precise and safe, and contributing to a higher success rate and accuracy of the biopsy. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific 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. Figure 1 This is an assembly diagram of the puncture biopsy device; Figure 2 This is a disassembled diagram of the biopsy device; Figure 3 This is a schematic diagram of the structure of a body surface locator; Figure 4 This is a diagram illustrating the needle puncture status; Figure 5 This is a schematic diagram of the needle sampling status; In the diagram: 1. Needle tube, 11. Needle path, 2. Needle core, 21. Brush section, 3. Handle, 31. Disc, 32. Waist-shaped part, 4. Knob, 5. Limiting safety, 51. Opening, 52. Connection point, 6. Body surface locator, 61. Clamping seat, 62. Arc-shaped slide, 63. Locking bolt, 7. Contouring pad, 71. Clearance opening. Detailed Implementation

[0015] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0016] To make the puncture biopsy process more precise and safe, a surgical puncture biopsy device is designed, such as... Figure 1 As shown, the device includes a needle tube 1 and a needle core 2. The needle tube 1 has a through-hole needle channel 11, and the needle core 2 is placed inside the needle channel 11. One end of the needle core 2 is equipped with a needle tip, and the other end is fixedly connected to the needle tube 1 via a limiting safety 5, so that the needle tip of the needle core 2 is placed inside the needle channel 11. The limiting safety 5 limits the relative position of the needle tube 1 and the needle core 2, preventing the needle core 2 from extending prematurely and causing inaccurate sampling, thus improving the accuracy and safety of sampling. When the needle tube 1 accurately punctures the target position, the limiting safety 5 is released, and the needle tip of the needle core 2 is pushed out from the needle channel 11 to collect tissue samples.

[0017] To achieve sufficient sampling, a handle 3 is provided at one end of the needle tube 1, and a knob 4 is provided at the end of the needle core 2 away from the needle tip. A limit safety 5 is provided between the handle 3 and the knob 4. A brush section 21 is provided on the outer surface of the needle tip. The brush section 21 can increase the contact area with the tissue when the needle core 2 collects tissue samples, thereby more effectively obtaining sufficient samples. The soft texture can also reduce damage to the surrounding normal tissue.

[0018] After the needle tube 1 and the needle core 2 are simultaneously punctured to reach the center of the designated cell, the limiting safety 5 is removed, and the needle core 2 is gently pushed to expose the brush section 21 at the end of the needle core 2. The brush section 21 is rotated several times by the knob 4 at the end of the needle core 2 to collect the sample. Then the needle core 2 is pulled back until it is completely retracted into the needle channel 11 of the needle tube 1. Then the needle tube 1 and the needle core 2 are pulled out together. This can increase the probability of obtaining tumor cells. Moreover, completely enveloping the needle core 2 before pulling it out can minimize the implantation and metastasis of tumor cells in the needle channel 11.

[0019] like Figure 2As shown, the safety device 5 can be a limiting clip with an opening. The limiting clip has an elastic clamp that matches the needle core 2. The limiting clip is secured to the outside of the needle core 2 through the elastic clamp. When the safety needs to be released, the limiting clip can be removed directly. Preferably, the safety device 5 adopts a locking plate structure that is easy to tear. The safety device 5 includes an annular locking plate, which is an open-ring structure and forms an opening 51 that is easy to tear. The annular locking plate is connected to the handle 3 and the knob 4 through several connection points 52. The setting of several connection points 52 facilitates tearing. Before puncture, the annular locking plate is securely connected to the handle 3 and the knob 4 through the connection points 52 to ensure that the needle core 2 will not extend accidentally. After the needle tube 1 is accurately punctured to the target position, the medical staff can easily tear off the annular locking plate through the opening 51, so that the connection points 52 are disconnected, thereby releasing the restriction on the relative position of the needle tube 1 and the needle core 2, and facilitating the pushout of the needle tip of the needle core 2 from the needle channel 11 for tissue sample collection. This not only ensures the stability of the needle core 2 position during puncture, but also allows for quick and convenient release of the limit when needed, improving operational efficiency and safety.

[0020] The lower surface of the annular locking plate is fixedly connected to the upper surface of the handle 3 through several connection points 52. The knob 4 abuts against the upper surface of the annular locking plate, and the annular locking plate and the knob 4 are concentrically arranged. When the medical staff prepares to perform puncture, the knob 4, under the restriction of the annular locking plate, maintains a relatively stable positional relationship with the handle 3, preventing the needle core 2 from moving arbitrarily. During the puncture, since the annular locking plate is tightly connected to the handle 3 through the connection points 52, and the knob 4 abuts against the annular locking plate, it can effectively prevent the needle core 2 from accidentally extending and damaging the surrounding tissue. When the needle tube 1 reaches the target position, the medical staff only needs to gently pinch the opening 51 and apply a certain pulling force, and the connection point 52 will break, the annular locking plate will separate from the handle 3, and the knob 4 will no longer be restricted by the annular locking plate. The medical staff can easily push the knob 4 to push the needle tip of the needle core 2 out of the needle channel 11 and begin collecting tissue samples.

[0021] To facilitate the installation of the annular locking plate, the handle 3 has a disc 31 for fixing the annular locking plate, and the disc 31 is concentrically arranged with the annular locking plate. The arrangement of the disc 31 provides a flat mounting surface for the annular locking plate, making the connection between the annular locking plate and the handle 3 tighter, thereby improving the reliability of the limit safety 5 in fixing the relative position of the needle core 2 and the needle tube 1.

[0022] like Figures 3-5 As shown, to address the issue of needle displacement or wobbling during operation, a surface locator 6 for fixing the needle 1 is also included. The surface locator 6 has at least one clamping seat 61 adapted to the handle 3. After the needle 1 is inserted into position, it is fixed using the surface locator 6, providing stable support for subsequent removal of the annular locking plate and pushing of the needle core 2. This ensures the needle 1 is held securely, preventing displacement or wobbling during operation.

[0023] To ensure the stability of the needle tube 1, the clamping base 61 is made of plastic and has a clamping opening. The outer surface of the handle 3 is provided with a waist-shaped part 32 that matches the clamping opening. The outer surface of the waist-shaped part 32 fits into the clamping opening, and the handle 3 is fixed by inserting the waist-shaped part 32 into the clamping opening.

[0024] To accommodate needles 1 at different puncture angles, the body surface locator 6 is a semi-circular support with an arc-shaped groove 62. The clamping seat 61 is slidably positioned within the arc-shaped groove 62 via a slider and secured by a locking bolt 63. A contour pad 7, in contact with the body surface, is located at the bottom of the semi-circular support. The contour pad 7 has a clearance opening 71 in its center. The arc-shaped groove 62 has two layers: the first layer for sliding the slider of the clamping seat 61, and the second layer for the locking bolt 63. The width of the first layer is greater than that of the second layer. The clamping seat 61 can slide along the arc-shaped groove 62 to adjust its position, and is then fixed by the locking bolt 63. The contour pad 7 is made of soft and elastic silicone, which better conforms to the curves of the human body surface, increasing the contact area and improving the stability of the body surface locator 6. The clearance opening 71 of the contour pad 7 is designed to provide space for needles 1 punctured at different angles.

[0025] When using a tumor cell biopsy device, a color Doppler ultrasound examination is required first to assess whether the nodule is suitable for puncture and whether there is a safe access route. After the ultrasound assessment, routine disinfection and draping are performed, followed by local anesthesia. Finally, under ultrasound guidance, the needle 1 is inserted into the body. The needle 1 has graduations, which allow for precise control of the puncture depth, enabling more accurate positioning of the nodule boundary and increasing the success rate of the puncture. After the needle 1 is inserted, the surface locator 6 with the contour pad 7 is placed on the body surface. The position of the clamping seat 61 on the semi-circular support is adjusted according to the puncture angle of the needle 1 to fix the punctured needle 1 on the clamping seat 61. After clamping, the surface locator is used to... The 6 provides stable support for the needle tube 1. The annular locking piece between the handle 3 at the end of the needle tube 1 and the knob 4 at the end of the needle core 2 is removed. The needle core 2 is pushed using the knob 4, so that the needle tip of the needle core 2 extends out of the needle channel 11. The brush section 21 at the needle tip is used to take samples for biopsy, reducing the ineffective puncture distance. The brush head structure is relatively gentle and efficient, which can obtain sufficient tissue samples while reducing damage to normal tissues around tumor cells. After successful sampling, the needle core 2 is withdrawn from the needle tube 1, and the needle tube 1 is temporarily left on the body surface through the body surface locator 6. One puncture can avoid repeated needle insertion and complete multiple samplings. The sampling is accurate, fast, easy to control, and causes less harm to the patient.

[0026] The above description is illustrative only and not restrictive of this utility model. Those skilled in the art will understand that many modifications, variations or equivalents can be made without departing from the spirit and scope defined by the appended claims, and all such modifications, variations or equivalents will fall within the protection scope of this utility model.

Claims

1. A surgical biopsy device, comprising a needle tube (1) and a needle core (2), wherein the needle tube (1) is provided with a through needle channel (11), and the needle core (2) is placed within the needle channel (11), characterized in that: The needle core (2) has a needle tip at one end and is fixedly connected to the needle tube (1) at the other end through a limit safety (5), so that the needle tip of the needle core (2) is placed in the needle channel (11).

2. The surgical biopsy device according to claim 1, characterized in that: The needle tube (1) is provided with a handle (3) at one end, the needle core (2) is provided with a knob (4) at the end away from the needle tip, the limit safety (5) is provided between the handle (3) and the knob (4), and the outer surface of the needle tip is provided with a brush section (21).

3. The surgical biopsy device according to claim 2, characterized in that: The limiting safety (5) includes an annular locking piece, which is an open-ring structure and has an opening (51) that is easy to tear. The annular locking piece is connected to the handle (3) and the knob (4) through several connection points (52).

4. The surgical biopsy device according to claim 3, characterized in that: The lower surface of the annular locking plate is fixedly connected to the upper surface of the handle (3) through several connection points (52), the knob (4) abuts against the upper surface of the annular locking plate, and the annular locking plate and the knob (4) are concentrically arranged.

5. A surgical biopsy device according to claim 4, characterized in that: The handle (3) has a disc (31) for securing the annular locking piece, the disc (31) being concentrically arranged with the annular locking piece.

6. A surgical biopsy device according to claim 2, characterized in that: It also includes a body surface locator (6) for fixing the needle (1), the body surface locator (6) being provided with at least one clamping seat (61) adapted to the handle (3).

7. A surgical biopsy device according to claim 6, characterized in that: The clamping seat (61) is made of plastic and has a clamping opening. The outer surface of the handle (3) is provided with a waist-shaped part (32) that is adapted to the clamping opening.

8. A surgical biopsy device according to claim 6, characterized in that: The body surface locator (6) is a semi-circular bracket with an arc-shaped groove (62) on it. The clamping seat (61) is slidably disposed in the arc-shaped groove (62) and fixed by a locking bolt (63). The bottom of the semi-circular bracket is also provided with a contour pad (7) that contacts the body surface. The contour pad (7) has an avoidance opening (71) in the middle.

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