Biopsy needle film pasting and assembling semi-automatic jig

Abstract

According to the semi-automatic jig for film pasting and assembling of the biopsy needle, film pasting and assembling procedures are efficiently integrated through process optimization and structural innovation, complex operation is simplified, an operator only needs to place a handle and needle body assembly into a base groove, the direction of a needle body is corrected through a positioning assembly, and the needle body can be assembled conveniently. The membrane is placed and fixed to the handle through the gland assembly, the alignment difficulty and errors are greatly reduced, manual work is replaced by machinery, it is ensured that the membrane is firmly and flatly pasted, the assembly is reliably fixed, the product quality consistency is high, in addition, glue is directly injected through the glue injection hole in the press fit state, the displacement risk caused by product moving between procedures is avoided, and the production efficiency is improved. The efficiency and the final precision are improved, the whole process is completed at a time, and the production efficiency and the product yield are remarkably improved.

Description

Technical Field

[0001] This invention relates to a semi-automatic fixture for assembling biopsy needles with film, belonging to the field of surgical instrument assembly technology. Background Technology

[0002] Biopsy is a crucial technique in modern medicine for obtaining diseased tissue and conducting pathological diagnoses. The biopsy needle, as a core medical device, typically consists of a reusable target handle and a disposable needle body. To ensure precise navigation during the biopsy process, especially under image-guided systems (such as CT, ultrasound, or electromagnetic navigation), high-precision reflective film or magnetic markers are often attached to the target handle as spatial positioning references.

[0003] Currently, the assembly of the biopsy target handle and the biopsy needle body, as well as the application of the reflective film to the target handle, mainly rely on manual operation or are completed step-by-step on different fixtures. The traditional production process is usually as follows: the operator first manually aligns and applies the reflective film to a specific plane of the target handle on a fixture; then, the film-coated target handle and the biopsy needle body are aligned on another assembly fixture and firmly bonded together by injecting glue.

[0004] However, this step-by-step operation method has many inherent drawbacks. First, it suffers from poor production efficiency and consistency. The separation of the two key processes leads to production interruptions, requiring operators to repeatedly pick up, place, and position products. This not only increases the production time per unit but also introduces cumulative errors due to repeated clamping, affecting the consistency of product assembly and film application accuracy. Second, the accuracy of reflective film application is difficult to guarantee. Manual application of reflective film relies entirely on the operator's experience and visual judgment, making it prone to positional deviations, tilting, or air bubbles. Even minor errors in the reflective film's position are amplified directly in the navigation system, potentially leading to inaccurate positioning references and affecting the accuracy of puncture biopsies, posing potential medical risks. Finally, the fixtures suffer from poor versatility and high cost. For different models and lengths of biopsy needles, completely independent film application and assembly fixtures need to be designed and manufactured. This not only increases the development and manufacturing costs of the fixtures but also consumes a significant amount of debugging and mold-changing time during production changeovers, making it unsuitable for flexible production needs involving small batches and multiple varieties. Summary of the Invention

[0005] The purpose of this invention is to provide a semi-automatic fixture for assembling biopsy needles with film to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a semi-automatic fixture for assembling biopsy needle films, the semi-automatic fixture comprising: The positioning base includes a positioning base body, a receiving cavity through both ends of the positioning base body for accommodating the biopsy needle body and the biopsy needle target handle, and an injection hole communicating with the biopsy needle target handle; A capping assembly is disposed above the positioning base to cap the membrane onto the biopsy needle target handle and fix the biopsy needle target handle to the positioning base; The positioning assembly includes a positioning top block disposed directly below the biopsy needle body and a positioning structure disposed on the side of the biopsy needle body, the positioning structure being configured to partially extend into the biopsy needle body to restrict its rotation.

[0007] Furthermore, the capping assembly includes a drive member, a pressure plate fixed on the drive member, and a positioning plate connected to the pressure plate. The positioning plate can move closer to or further away from the pressure plate along the capping direction. The positioning plate is used to position the biopsy needle target handle and accommodate the membrane.

[0008] Furthermore, a guide structure is provided between the positioning base and the pressure cap assembly. The guide structure includes a guide rod and a guide groove. One of the guide rod and the guide groove is provided on the positioning base, and the other is provided on the pressure cap assembly.

[0009] Furthermore, the guide groove is arranged on the pressure plate, the guide rod is disposed on the positioning base, and the positioning plate is slidably connected to the guide rod.

[0010] Furthermore, the lower surface of the positioning plate is formed with a positioning groove that is adapted to the shape of the biopsy needle target handle.

[0011] Furthermore, a plurality of receiving grooves for accommodating the membrane are recessed downward from the upper surface of the positioning plate, and part of the biopsy needle target handle extends from bottom to top into the receiving grooves to receive the membrane.

[0012] Furthermore, the pressure plate is formed with elastic flat-headed plungers that correspond one-to-one with the receiving grooves. The elastic flat-headed plungers are used to extend into the receiving grooves to fix the membrane cap to the biopsy needle target handle.

[0013] Furthermore, the bottom of the positioning base is provided with a mounting groove for installing the positioning top block, and the positioning top block is installed into the mounting groove from bottom to top to support the biopsy needle body.

[0014] Furthermore, the side of the positioning base is provided with a locking hole that communicates with the mounting groove, and a locking screw is arranged in the locking hole to hold and fix the positioning top block.

[0015] Furthermore, the positioning structure includes a positioning hole formed on the side of the positioning base and a positioning pin movably installed in the positioning hole.

[0016] The beneficial effects of this invention are as follows: This application integrates the film application and assembly processes efficiently through process optimization and structural innovation, simplifying complex operations. The operator only needs to place the handle and needle assembly into the base groove, the positioning component corrects the needle direction, place the film, and fix the film on the handle through the pressure cap component. This greatly reduces the difficulty and error of alignment. The machine replaces manual labor, ensuring that the film is firmly and flatly pasted and the components are reliably fixed, resulting in high product quality consistency. In addition, glue is directly injected through the injection hole in the pressing state, avoiding the displacement risk caused by moving the product between processes, improving efficiency and final accuracy. The whole process is completed in one go, significantly improving production efficiency and product yield.

[0017] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a semi-automatic fixture for assembling biopsy needles and films, as shown in one embodiment of this application. Figure 2 for Figure 1 Exploded view of the structure of a semi-automatic fixture for assembling biopsy needles with film application; Figure 3 for Figure 1 A schematic diagram of the internal structure of a semi-automatic fixture for assembling biopsy needles and films. Detailed Implementation

[0019] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] Please refer to Figures 1 to 3 The present application discloses a semi-automatic fixture for assembling biopsy needle films. The fixture includes a positioning base 10, a pressure cap assembly 20, and a positioning assembly 30. The positioning base 10 is used to fix the biopsy needle body 40 and the biopsy needle target handle 50, and the positioning assembly 30 is used to position the biopsy needle body 40, thereby ensuring that the biopsy needle body 40 and the biopsy needle target handle 50 are installed at the correct angle. The pressure cap assembly 20 is then used to fix the film, the biopsy needle target handle 50, and the biopsy needle body 40. Finally, glue is injected into the biopsy needle body 40 and the biopsy needle target handle 50 through the glue injection hole 13 to ensure that the two are fixedly connected, which greatly simplifies the assembly process and improves the assembly efficiency.

[0023] The positioning base 10 includes a positioning base body 11, accommodating cavities extending through both ends of the positioning base body 11 for accommodating the biopsy needle body 40 and the biopsy needle target handle 50, and an injection hole 13 communicating with the biopsy needle target handle 50. The injection hole 13 on the positioning base body 11 is correspondingly provided with the injection port 51 of the biopsy needle target handle 50, so as to facilitate the injection of adhesive into the biopsy needle body 40 and the biopsy needle target handle 50 through an external injection device.

[0024] The capping assembly 20 is positioned above the positioning base 10 to cap the membrane onto the biopsy needle target handle 50 and to fix the biopsy needle target handle 50 onto the positioning base 10.

[0025] The positioning assembly 30 includes a positioning top block 31 disposed directly below the biopsy needle body 40 and a positioning structure disposed on the side of the biopsy needle body 40. The positioning structure is configured to partially extend into the biopsy needle body 40 to restrict its rotation.

[0026] In one embodiment, the capping assembly 20 includes a drive member 21, a pressure plate 22 fixed to the drive member 21, and a positioning plate 23 connected to the pressure plate 22. The positioning plate 23 can move closer to or further away from the pressure plate 22 along the capping direction. The positioning plate 23 is used to position the biopsy needle target handle 50 and accommodate the membrane. The drive member 21 is a cylinder, arranged vertically above the positioning base 10. The pressure plate 22 is fixed on the output shaft of the cylinder. The cylinder drives the pressure plate 22 to move up and down to cap or release the biopsy needle target handle 50. The positioning plate 23 is located on the side of the pressure plate 22 close to the positioning base 10, and the two are movably connected to each other for independent operation.

[0027] In one embodiment, a guide structure is provided between the positioning base 10 and the capping assembly 20. The guide structure includes a guide rod 12 and a guide groove 222. One of the guide rod 12 and the guide groove 222 is disposed on the positioning base 10, and the other is disposed on the capping assembly 20. The guide rod 12 and the guide groove 222 slide together to ensure that the capping direction of the capping assembly 20 does not deviate, thereby avoiding damage to the biopsy needle body 40 and the biopsy needle target handle 50.

[0028] In one embodiment, a guide groove 222 is arranged on a pressure plate 22, a guide rod 12 is disposed on a positioning base 10, and a positioning plate 23 is slidably connected to the guide rod 12. The positioning plate 23 is slidably connected to the guide rod 12, allowing for manual adjustment of the position of the positioning plate 23 to facilitate adjustment of the biopsy needle target handle 50. Furthermore, the limiting effect of the guide rod 12 on the positioning plate 23 also prevents rotation of the positioning plate 23, ensuring that the angle and height of each biopsy needle target handle 50 are uniform.

[0029] In one embodiment, the lower surface of the positioning plate 23 is formed with a positioning groove 231 that is adapted to the shape of the biopsy needle target handle 50. The positioning groove 231 is formed by an upward indentation from the lower surface of the positioning plate 23 and is adapted to the shape of the biopsy needle target handle 50. By adjusting the angle of the biopsy needle target handle 50, the positioning groove 231 of the positioning plate 23 can be fitted with the biopsy needle target handle 50, thus determining the position and angle of the biopsy needle target handle 50 and greatly reducing the assembly difficulty.

[0030] In one embodiment, the upper surface of the self-positioning plate 23 is recessed downward to form a plurality of receiving grooves 232 for accommodating the membrane. Part of the biopsy needle target handle 50 extends upward into the receiving groove 232 to receive the membrane. A cylindrical protrusion is formed on the biopsy needle target handle 50, and the membrane is fixed on the cylindrical protrusion. Because the membrane is small in size and light in weight, it can be completely placed in the receiving groove 232 by extending half the depth of the cylindrical protrusion. This avoids the membrane from being misaligned with the cylindrical protrusion due to external force, which would require rework and greatly improves assembly efficiency.

[0031] In one embodiment, the pressure plate 22 has elastic flat-headed plungers 221 corresponding to the receiving grooves 232. The elastic flat-headed plungers 221 are used to extend into the receiving grooves 232 to press and fix the membrane onto the biopsy needle target handle 50. By providing elastic flat-headed plungers 221 on the pressure plate 22, the pressure plate 22 is driven by a cylinder to press onto the positioning plate 23, and the elastic flat-headed plungers 221 extend into the receiving grooves 232, thereby firmly pressing the membrane onto the biopsy needle target handle 50 to ensure a stable connection and fixation between the two. In addition, the elastic flat-headed plungers 221 elastically abut against the membrane and the biopsy needle target handle 50, ensuring a reliable connection while also preventing rigid collisions between the pressure plate 22 and the membrane and the biopsy needle target handle 50.

[0032] In one embodiment, the bottom of the positioning base 10 is provided with a mounting groove for mounting a positioning top block 31. The positioning top block 31 is installed into the mounting groove from bottom to top to support the biopsy needle body 40. The positioning top block 31 is arranged directly below the biopsy needle body 40 to support the biopsy needle body 40, thereby ensuring a stable connection between the biopsy needle body 40 and the biopsy needle target handle 50. By changing or adjusting the position of the positioning top block 31, it is easy to adapt to biopsy needle bodies 40 of different sizes, thus improving the applicability of the fixture.

[0033] In one embodiment, the positioning base 10 has a locking hole on its side that communicates with the mounting groove, and a locking screw 32 is arranged in the locking hole to hold and fix the positioning top block 31. The locking screw 32 is threadedly connected to the locking hole so as to hold the positioning top block 31 against the inner wall of the mounting groove, thereby fixing the positioning top block 31.

[0034] In one embodiment, the positioning structure includes a positioning hole formed on the side of the positioning base 10 and a positioning pin 32 movably installed in the positioning hole. An opening is arranged on the side of the end of the biopsy needle body 40, and the end of the positioning pin 32 is inserted into the opening to fix the angle of the biopsy needle body 40.

[0035] This application integrates the film application and assembly processes efficiently through process optimization and structural innovation, simplifying complex operations. Operators only need to place the handle and needle assembly into the base groove, the positioning component corrects the needle direction, place the film, and fix the film to the handle through the pressure cap component. This greatly reduces the difficulty and error of alignment. The machine replaces manual labor, ensuring that the film is firmly and flatly pasted and the components are reliably fixed, resulting in high product quality consistency. In addition, glue is directly injected through the injection hole in the pressing state, avoiding the displacement risk caused by moving the product between processes, improving efficiency and final accuracy. The whole process is completed in one go, significantly improving production efficiency and product yield.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A semi-automatic fixture for assembling biopsy needle film, characterized in that, The semi-automatic fixture for assembling biopsy needle film application includes: The positioning base includes a positioning base body, a receiving cavity through both ends of the positioning base body for accommodating the biopsy needle body and the biopsy needle target handle, and an injection hole communicating with the biopsy needle target handle; A capping assembly is disposed above the positioning base to cap the membrane onto the biopsy needle target handle and fix the biopsy needle target handle to the positioning base; The positioning assembly includes a positioning top block disposed directly below the biopsy needle body and a positioning structure disposed on the side of the biopsy needle body, the positioning structure being configured to partially extend into the biopsy needle body to restrict its rotation.

2. The semi-automatic fixture for assembling biopsy needles and films as described in claim 1, characterized in that, The capping assembly includes a drive unit, a pressure plate fixed on the drive unit, and a positioning plate connected to the pressure plate. The positioning plate can move closer to or further away from the pressure plate along the capping direction. The positioning plate is used to position the biopsy needle target handle and accommodate the membrane.

3. The semi-automatic fixture for assembling biopsy needle film as described in claim 2, characterized in that, A guide structure is provided between the positioning base and the pressure cap assembly. The guide structure includes a guide rod and a guide groove. One of the guide rod and the guide groove is provided on the positioning base, and the other is provided on the pressure cap assembly.

4. The semi-automatic fixture for assembling biopsy needle film as described in claim 3, characterized in that, The guide groove is arranged on the pressure plate, the guide rod is set on the positioning base, and the positioning plate is slidably connected to the guide rod.

5. The semi-automatic fixture for assembling biopsy needles and films as described in claim 2, characterized in that, The lower surface of the positioning plate has a positioning groove that matches the shape of the biopsy needle target handle.

6. The semi-automatic fixture for assembling biopsy needles and films as described in claim 2, characterized in that, A plurality of receiving grooves for accommodating the membrane are recessed downward from the upper surface of the positioning plate, and part of the biopsy needle target handle extends from bottom to top into the receiving grooves to receive the membrane.

7. The semi-automatic fixture for assembling biopsy needles and films as described in claim 6, characterized in that, The pressure plate has a plurality of elastic flat-headed plungers, which are used to extend into the receiving groove to fix the membrane cap to the biopsy needle target handle.

8. The semi-automatic fixture for assembling biopsy needles and films as described in claim 1, characterized in that, The bottom of the positioning base is provided with a mounting groove for installing the positioning top block. The positioning top block is installed into the mounting groove from bottom to top to support the biopsy needle.

9. The semi-automatic fixture for assembling biopsy needles and films as described in claim 8, characterized in that, The side of the positioning base is provided with a locking hole that communicates with the mounting groove, and a locking screw is arranged in the locking hole to hold and fix the positioning top block.

10. The semi-automatic fixture for assembling biopsy needle film as described in claim 1, characterized in that, The positioning structure includes a positioning hole formed on the side of the positioning base and a positioning pin movably installed in the positioning hole.

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