A scaleable and rotatable airway biopsy forceps

Abstract

This utility model provides a graduated and rotatable airway biopsy forceps, including a sampling forceps head, a spring outer tube, graduation marks, an operating handle, a rotating wheel, and a metal tube. The operating handle includes a handle rod and a handle, which is mounted on the handle rod and can reciprocate. The rotating wheel is rotatably disposed inside the distal end of the handle rod, and the distal end of the handle rod is connected to the proximal end of the spring outer tube. The sampling forceps head is rotatably connected to the distal end of the spring outer tube, and the distal end of the metal tube is fixedly connected to the sampling forceps head. The proximal end of the metal tube passes through the inner hole of the rotating wheel and is connected to the handle. The metal tube and the handle are axially fixed and circumferentially rotatable. Graduation marks are respectively disposed at the distal and proximal ends of the spring outer tube, and multiple graduation marks are respectively disposed at the distal and proximal ends of the spring outer tube. The rotating wheel has at least one damping groove on its circumference, and the handle rod has a circular protrusion that matches the damping groove inside. The metal tube can move back and forth inside the rotating wheel under the drive of the handle. The metal tube can rotate synchronously within a 360° range with the rotation of the rotating wheel, thereby driving the sampling forceps head to rotate synchronously. This invention precisely determines the biopsy site by controlling the depth of the biopsy forceps inserted into the front end of the bronchoscope and adjusting the angle of the biopsy forceps.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a graduated and rotatable airway biopsy forceps. Background Technology

[0002] Transbronchial lung biopsy (TBLB) is a minimally invasive technique that, under X-ray fluoroscopy guidance, uses a bronchoscope to insert biopsy forceps into peripheral lesions or areas of diffuse lung disease to obtain tissue samples. This technique overcomes the limitation of conventional bronchoscopy, which can only observe 3rd or 4th order bronchi, allowing direct sampling of deep lung tissue for pathological analysis. However, this procedure must be performed in a radiation environment; medical personnel must wear heavy lead aprons for protection and take turns performing the procedure to prevent radiation sickness.

[0003] In the absence of intraoperative X-ray fluoroscopy, the location of the lesion can be determined by preoperative chest CT scan, and a "blind" examination can be performed based on the bronchial anatomy. During the procedure, the bronchial branch where the lesion is located is estimated based on the CT image, and the depth and angle of the biopsy forceps are adjusted for sampling. Existing biopsy forceps lack clear positioning markers, making it difficult to accurately determine the sampling depth. Some sampling forceps can rotate 360°, but during rotation, the angle of rotation is often difficult to accurately identify, causing some difficulties for clinical sampling. Utility Model Content

[0004] The purpose of this invention is to provide a graduated and rotatable airway biopsy forceps. It can accurately determine the biopsy site by controlling the depth of the forceps tip inserted into the front end of the bronchoscope. A rotating wheel is installed on the handle of the biopsy forceps, which can achieve 360° rotation. A damping groove structure is designed on the rotating wheel, with a damping groove every 60°, which can accurately determine the rotation angle of the biopsy forceps.

[0005] According to one aspect of this utility model, a graduated and rotatable airway biopsy forceps is provided, comprising a sampling forceps head, a spring outer tube, graduated markings, an operating handle, a rotating wheel, and a metal tube. The operating handle includes a handle rod and a handle, the handle being mounted on the handle rod and capable of reciprocating motion. The rotating wheel is rotatably disposed inside the distal end of the handle rod. The distal end of the handle rod is connected to the proximal end of the spring outer tube. The proximal end of the sampling forceps head is rotatably connected to the distal end of the spring outer tube. The distal end of the metal tube is fixedly connected to the sampling forceps head, and the proximal end of the metal tube passes through the rotating wheel. The metal tube is axially fixed to the handle and circumferentially rotatable. The scale marks are respectively set at the far end and near end of the outer spring tube, and multiple scale marks are respectively set at the far end and near end of the outer spring tube. At least one damping groove is provided on the circumference of the rotating wheel, and a circular protrusion adapted to the damping groove is provided inside the handle rod. The metal tube can move back and forth inside the rotating wheel under the drive of the handle. The metal tube can rotate synchronously within a 360° range with the rotation of the rotating wheel, thereby driving the sampling forceps head to rotate synchronously.

[0006] Preferably, the distal end of the spring outer tube is provided with four first scale marks, and the first scale mark closest to the sampling clamp head is set at the connection position between the sampling clamp head and the spring outer tube; the four first scale marks are arranged sequentially with a spacing of 10mm.

[0007] Preferably, the near end of the spring outer tube is provided with four second scale marks, and the second scale mark closest to the sampling clamp head is set at a position of 540-590mm away from the sampling clamp head; the four second scale marks are arranged sequentially with a spacing of 10mm.

[0008] Preferably, the scale markings are ink-coated annular markings circumferentially disposed on the surface of the spring outer tube.

[0009] Preferably, the first scale mark and the second scale mark are distinguished by four colors: yellow, red, green, and black.

[0010] Preferably, six damping grooves are evenly distributed on the circumference of the wheel, with the uppermost damping groove marked with 0°.

[0011] Preferably, the inner hole of the wheel has a non-circular geometric shape.

[0012] Preferably, the cross-sectional shape of the metal tube is a non-circular geometry.

[0013] Preferably, the metal tube is circumferentially fixed but not circumferentially fixed inside the rotating wheel.

[0014] Preferably, it further includes a rotating sleeve, which is fixedly connected to the distal end of the spring outer tube, and the distal end of the rotating sleeve is provided with a rotating groove; the sampling clamp head includes a clamp head frame, and the proximal end of the clamp head frame is provided with a flange; the flange rotates freely in the rotating groove.

[0015] This invention features a rotating wheel mounted on the handle of the biopsy forceps, enabling 360° rotation. The wheel is designed with a damping groove structure, with one groove every 60°, allowing for precise determination of the forceps' rotation angle. Additionally, multiple graduations are marked on the spring tube of the biopsy forceps to assist medical personnel in controlling the depth of the endoscope insertion during surgery, enabling more accurate access to the sampling site. Attached Figure Description

[0016] Figure 1 An embodiment of a graduated airway biopsy forceps;

[0017] Figure 2 An embodiment of a graduated and rotatable airway biopsy forceps;

[0018] Figure 3 This is a schematic diagram of the connection structure between the sampling clamp head and the spring outer tube.

[0019] Figure 4 A partial structural diagram of a rotatable airway biopsy forceps;

[0020] Figure 5 This is a schematic diagram of the structure connecting the metal tube to the wheel and the damping groove fitting with the circular protrusion. Detailed Implementation

[0021] To facilitate understanding of this application and to make the aforementioned objectives, features, and advantages of this application more apparent, a detailed description of specific embodiments of this application is provided below in conjunction with the accompanying drawings. Numerous specific details are set forth in the following description to provide a thorough understanding of this application, and preferred embodiments are shown in the accompanying drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application. This application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise expressly specified. In the description of this application, "several" means at least one, such as one, two, etc., unless otherwise expressly specified. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can also refer to the internal connection between two components.

[0024] For ease of description, in this instruction manual, the end of the Bourdon tube furthest from the operator during use is defined as the distal end, or the front end, while the end held by the operator is defined as the proximal end, or the rear end.

[0025] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-5As shown, the graduated and rotatable airway biopsy forceps of this embodiment includes a sampling forceps head 1, a spring outer tube 2, graduated markings, an operating handle 3, a rotating wheel 6, a metal tube 7, and a rotating sleeve 8. The operating handle 3 includes a handle rod 31 and a handle 32. The handle 32 is mounted on the handle rod 31 and can reciprocate. The rotating wheel 6 is rotatably disposed inside the distal end of the handle rod 31. The distal end of the handle rod 31 is connected to the proximal end of the spring outer tube 2. The proximal end of the sampling forceps head 1 is rotatably connected to the distal end of the spring outer tube 2. The distal end of the metal tube 7 is fixedly connected to the sampling forceps head 1, and the proximal end of the metal tube 7 passes through the inner hole of the rotating wheel 6. It is connected to the handle 32. The metal tube 7 is axially fixed to the handle 32 and circumferentially rotatable. The scale marks are respectively set at the far end and near end of the spring outer tube 2. Multiple scale marks are set at the far end and near end of the spring outer tube 2. At least one damping groove 61 is provided on the circumference of the rotating wheel 6. The handle rod 31 is provided with a circular protrusion 311 that matches the damping groove 61. The metal tube 7 can move back and forth inside the rotating wheel 6 under the drive of the handle 32. The metal tube 7 can rotate synchronously within a 360° range with the rotation of the rotating wheel 6, thereby driving the sampling clamp head 1 to rotate synchronously.

[0027] Four first scale marks 4 are provided at the distal end of the spring outer tube 2. The first scale mark 4 closest to the sampling clamp head 1 is located at the connection position between the sampling clamp head 1 and the spring outer tube 2; the four first scale marks 4 are arranged sequentially with a spacing of 10 mm. Four second scale marks 5 are provided at the proximal end of the spring outer tube 2. The second scale mark 5 closest to the sampling clamp head 1 is located at a position of 540-590 mm from the sampling clamp head 1; the four second scale marks 5 are arranged sequentially with a spacing of 10 mm. The first scale marks 4 and the second scale marks 5 are a series of annular marks arranged circumferentially along the surface of the spring outer tube. The scale marks can be effectively viewed regardless of whether the spring outer tube is rotated. The scale marks are ink-coated annular marks arranged circumferentially on the surface of the spring outer tube 2, which can be used for both plastic-coated and non-plastic-coated spring tubes. The first scale marks 4 and the second scale marks 5 are distinguished by four colors: yellow, red, green, and black; the four colors appear sequentially.

[0028] Specifically, six damping grooves 61 are evenly distributed on the circumference of the rotating wheel 6, with the uppermost damping groove marked with 0°. The inner hole of the rotating wheel 6 has a non-circular geometric shape, such as hexagonal, quadrilateral, oblong, or irregularly shaped hole with grooves. The cross-sectional shape of the metal tube 7 is a non-circular geometric shape that matches the shape of the inner hole of the rotating wheel 6, such as hexagonal, quadrilateral, oblong, or irregularly shaped hole with grooves. The metal tube 7 is circumferentially fixed but not circumferentially fixed inside the rotating wheel 6. The rotating sleeve 8 is fixedly connected to the distal end of the spring outer tube 2, and the distal end of the rotating sleeve 8 has a rotating groove 81; the sampling clamp head 1 includes a clamp head frame 11, and the proximal end of the clamp head frame 11 has a flange 111; the flange 111 rotates freely in the rotating groove 81.

[0029] During bronchoscopic lung biopsy, medical staff determine the location of the lesion, fix the endoscope in the corresponding lung segment, close the biopsy forceps head, and insert the biopsy forceps into the bronchoscopic forceps channel. At this point, the depth of the biopsy forceps insertion into the endoscope can be determined by the second graduation mark 5. When the first ring of the second graduation mark 5 enters the biopsy cap, it indicates that the forceps head is 10mm from the end of the forceps channel. The operator must insert the biopsy forceps slowly at this point to avoid puncturing the bronchus. When the second ring of the second graduation mark 5 enters the biopsy cap, it indicates that the forceps head has reached the forceps channel opening. When the third and fourth rings of the second graduation mark 5 enter the biopsy cap, the depth of the forceps head extending out of the forceps channel can be determined based on the insertion distance. At this point, the sampling forceps head 1 can be clearly seen under the endoscope. As the sampling forceps head 1 enters each branch of the bronchus, the first graduation mark 4 is also visible under the endoscope. The depth reached by the forceps head 1 can be estimated by the marks at the end of the forceps head 1. This allows for clearer and more intuitive control of the biopsy forceps insertion depth, enabling precise biopsy positioning. Additionally, upon reaching the designated lesion location, the rotating wheel 6 can be rotated to adjust the angle of the sampling forceps head 1. The initial position of the rotating wheel 6 is 0°. It can be rotated clockwise or counterclockwise. During rotation, when the damping groove 61 on the rotating wheel 6 encounters the circular protrusion 311 inside the handle 31, the circular protrusion 311 contacts the rotating wheel 6 and experiences significant resistance. Continuing to rotate the rotating wheel 6, the circular protrusion 311 will engage in the corresponding damping groove 61. At this point, the rotating wheel 6 is circumferentially limited, thus limiting the angle of the sampling forceps head 1. If you want to adjust the angle of the forceps head, increase the force and continue rotating the rotating wheel 6 to rotate the circular protrusion 311 out of the damping groove 61. Continue rotating the rotating wheel 6, and the circular protrusion 311 will rotate into the next damping groove 61. Each time it rotates into a damping groove 61, it has rotated 60°. This allows for precise determination of the rotation angle and accurate biopsy.

[0030] It will be apparent to those skilled in the art that various modifications and variations can be made to the exemplary embodiments described above without departing from the spirit and scope of the invention. Therefore, it is intended that this invention cover modifications and variations falling within the scope of the appended claims and their equivalents.

Claims

1. A graduated and rotatable airway biopsy forceps, comprising a sampling forceps head (1), a spring outer tube (2), graduated markings, an operating handle (3), a rotating wheel (6), and a metal tube (7), wherein the operating handle (3) comprises a handle rod (31) and a handle (32), the handle (32) being mounted on the handle rod (31) and capable of reciprocating motion, the rotating wheel (6) being rotatably disposed inside the distal end of the handle rod (31), the distal end of the handle rod (31) being connected to the proximal end of the spring outer tube (2), the proximal end of the sampling forceps head (1) being rotatably connected to the distal end of the spring outer tube (2), the distal end of the metal tube (7) being fixedly connected to the sampling forceps head (1), the proximal end of the metal tube (7) passing through the inner hole of the rotating wheel (6) and connected to the handle (32), the metal tube (7) being axially fixed to the handle (32) and circumferentially rotatable, characterized in that: The scale marks are respectively set at the far end and near end of the outer tube of the spring (2), and multiple scale marks are respectively set at the far end and near end of the outer tube of the spring (2); at least one damping groove (61) is provided on the circumference of the rotating wheel (6), and a circular protrusion (311) adapted to the damping groove (61) is provided inside the handle rod (31). The metal tube (7) can move back and forth inside the rotating wheel (6) under the drive of the handle (32). The metal tube (7) can rotate synchronously within a 360° range with the rotation of the rotating wheel (6), thereby driving the sampling clamp head (1) to rotate synchronously.

2. The graduated and rotatable airway biopsy forceps as described in claim 1, characterized in that: The far end of the spring outer tube (2) is provided with four first scale marks (4), and the first scale mark (4) closest to the sampling clamp head (1) is set at the connection position between the sampling clamp head (1) and the spring outer tube (2); the four first scale marks (4) are set sequentially at a interval of 10mm.

3. The graduated and rotatable airway biopsy forceps as described in claim 2, characterized in that: The spring outer tube (2) is provided with four second scale marks (5) at its near end. The second scale mark (5) closest to the sampling clamp head (1) is set at a position 540-590mm away from the sampling clamp head (1). The four second scale marks (5) are set in sequence with a spacing of 10mm.

4. The graduated and rotatable airway biopsy forceps as described in claim 3, characterized in that: The scale markings are ink-coated ring marks circumferentially arranged on the surface of the spring outer tube (2).

5. The graduated and rotatable airway biopsy forceps as described in claim 4, characterized in that: The first scale mark (4) and the second scale mark (5) are distinguished by four colors: yellow, red, green and black, respectively.

6. The graduated and rotatable airway biopsy forceps as described in claim 1, characterized in that: The wheel (6) has six damping grooves (61) evenly distributed on its circumference, with the uppermost damping groove marked with 0°.

7. The graduated and rotatable airway biopsy forceps as described in claim 6, characterized in that: The inner hole of the rotating wheel (6) has a non-circular geometric shape.

8. The graduated and rotatable airway biopsy forceps as described in claim 6, characterized in that: The cross-sectional shape of the metal tube (7) is a non-circular geometry.

9. The graduated and rotatable airway biopsy forceps as described in claim 6, characterized in that: The metal tube (7) is circumferentially fixed inside the rotating wheel (6) but not circumferentially fixed.

10. The graduated and rotatable airway biopsy forceps as described in claim 1, characterized in that: It also includes a rotating sleeve (8), which is fixedly connected to the far end of the spring outer tube (2), and the far end of the rotating sleeve (8) is provided with a rotating groove (81); the sampling clamp head (1) includes a clamp head frame (11), and the proximal end of the clamp head frame (11) is provided with a flange (111); the flange (111) can rotate freely in the rotating groove (81).

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