Skin biopsy punch

Abstract

The utility model relates to medical apparatus and instruments especially skin biopsy annular material taking device. Skin biopsy annular material taking device, including have installation cylinder and mounting seat etc. The lower side fixedly connected with mounting seat is installed in the inner wall of installation cylinder, the upper rotation is connected with stud on mounting seat, and the lower end threaded connection has ring cutter of stud, still including has adjusting assembly, drive assembly and ranging assembly, the adjusting assembly for adjusting ring cutter ring cutting depth is provided to the lower side of installation cylinder, and the drive assembly for driving stud rotation is arranged in the inside of installation cylinder. The utility model cooperates with display screen through laser range finder, can accurate adjustment limiting sleeve height, and further accurate control ring cutting depth, has overcome the problem that the previous medical staff judges the inaccuracy of material taking depth according to subjective feeling, has guaranteed the reliability of pathological diagnosis result, is favorable for subsequent accurate formulation treatment scheme, and convenient change different model ring cutter to adjust ring cutting area simultaneously.

Description

Technical Field

[0001] This utility model relates to medical devices, and more particularly to a circular skin biopsy sampling device. Background Technology

[0002] Skin biopsy with circular sampling is an important medical procedure that involves precisely extracting tissue samples of a specific depth and area from a patient's skin using a specialized circular sampling device for pathological examination. This procedure plays a crucial role in the diagnosis of skin diseases, monitoring of treatment effectiveness, and scientific research.

[0003] The skin has a complex structure, consisting of three layers: the epidermis, the dermis, and the subcutaneous tissue. Each layer has a unique tissue structure and physiological function. Since different layers of skin tissue may have different pathological changes, obtaining skin samples at different depths during the circular sampling process of skin biopsy is crucial for a comprehensive and in-depth understanding of skin lesions.

[0004] However, the current circular sampling method for skin biopsies has certain limitations. In practice, medical staff often rely on their subjective judgment to determine the sampling depth. This approach lacks objective and precise quantitative standards, which can easily lead to inaccurate sampling depth, potentially affecting the reliability of pathological diagnosis results and hindering the accurate formulation of subsequent treatment plans and in-depth scientific research. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a circular skin biopsy sampling device.

[0006] The technical solution of this utility model is: a skin biopsy ring-shaped sampling device, including a mounting cylinder, a mounting base, a stud, and a ring cutting blade. The mounting base is fixedly connected to the lower side of the inner wall of the mounting cylinder, and the stud is rotatably connected to the mounting base. The ring cutting blade is threadedly connected to the lower end of the stud. It also includes an adjustment component, a drive component, and a ranging component. An adjustment component for adjusting the ring cutting depth of the ring cutting blade is provided on the lower side of the mounting cylinder. A drive component for driving the stud to rotate is provided inside the mounting cylinder. A ranging component for digitally displaying the ring cutting depth of the ring cutting blade is provided on both the mounting base and the adjustment component.

[0007] Furthermore, the adjustment assembly includes an external threaded sleeve, a mounting ring, an internal threaded sleeve, and a limiting sleeve. The external threaded sleeve is slidably disposed on the lower side of the outer wall of the mounting cylinder, and the mounting ring is fixedly connected to the lower side of the outer wall of the mounting cylinder. The external threaded sleeve passes through the connection between the mounting ring and the mounting cylinder. The internal threaded sleeve is rotatably connected to the mounting ring, and the internal threaded sleeve and the external threaded sleeve are threadedly engaged. The limiting sleeve is fixedly connected to the lower end of the external threaded sleeve. When the limiting sleeve is at its lowest position, its bottom height is the same as the bottom height of the ring cutter.

[0008] Furthermore, the drive assembly includes a connecting rod, a worm gear, a rotating shaft, a worm, a servo motor, a battery, a control module, and switch a. A connecting rod is fixedly connected to the upper end of the stud, and a worm gear is fixedly connected to the connecting rod. A rotating shaft is rotatably mounted on the inner wall of the mounting cylinder, and a worm is fixedly connected to the rotating shaft. The worm and the worm gear mesh with each other. A servo motor is embedded in the inner wall of the mounting cylinder, and the output shaft end of the servo motor is fixedly connected to the right end of the rotating shaft. A battery is fixedly connected to the upper side of the inner wall of the mounting cylinder, and a control module is slidably mounted on the upper side of the inner wall of the mounting cylinder. Switch a is located on the top of the control module.

[0009] Furthermore, the measuring components include a bracket, a laser rangefinder, sliders, an arc plate, switch b, and a display screen. The bracket is fixedly connected to the bottom of the mounting base, and the laser rangefinder is mounted on the lower side of the bracket. Two sliders are slidably mounted on the side wall of the mounting cylinder, and both sliders are fixedly connected to the inner wall of the external threaded sleeve. An arc plate is fixedly connected between the two sliders, and the laser emitted by the laser rangefinder can hit the center of the arc plate. Switch b is located on the top of the control module, and a display screen is located on the top left side of the control module.

[0010] Furthermore, it also includes protrusions; multiple protrusions are spaced apart on the outer wall of the internally threaded sleeve.

[0011] Furthermore, it also includes a cover, with a cover provided at the bottom of the limiting sleeve.

[0012] The beneficial effects are: This utility model, through the cooperation of a laser rangefinder and a display screen, can accurately adjust the height of the limiting sleeve, thereby accurately controlling the circumferential cutting depth. It overcomes the problem that medical staff previously relied on subjective feelings to judge the depth of sampling, which was inaccurate. This ensures the reliability of pathological diagnosis results, which is conducive to the subsequent accurate formulation of treatment plans. At the same time, it also makes it convenient to replace different models of circumferential cutting blades to adjust the circumferential cutting area. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the connecting rod, worm gear, and rotating shaft of this utility model.

[0015] Figure 3 This is a three-dimensional structural diagram of the external threaded sleeve, mounting ring, and limiting sleeve of this utility model.

[0016] Figure 4 This is an exploded three-dimensional view of the external threaded sleeve, mounting ring, and internal threaded sleeve of this utility model.

[0017] Figure 5 This is a three-dimensional structural diagram of the bracket, laser rangefinder, and slider of this utility model.

[0018] In the attached diagram, the following are the reference numerals: 1_mounting cylinder, 2_mounting base, 21_stud, 22_ring cutter, 31_external threaded sleeve, 32_mounting ring, 33_internal threaded sleeve, 34_limiting sleeve, 41_connecting rod, 42_worm gear, 43_shaft, 44_worm, 45_servo motor, 46_battery, 47_control module, 48_switch a, 51_bracket, 52_laser rangefinder, 53_slider, 54_arc plate, 55_switch b, 56_display screen, 6_protrusion, 7_cover. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] Example: Skin biopsy ring-shaped sampling device, such as Figures 1-5 As shown, the device includes a mounting cylinder 1, a mounting base 2, a stud 21, and a ring cutter 22. The mounting base 2 is welded and fixed to the lower inner wall of the mounting cylinder 1. The stud 21 is rotatably connected to the mounting base 2. The ring cutter 22 is threadedly connected to the lower end of the stud 21. The device also includes an adjustment component, a drive component, and a distance measuring component. An adjustment component for adjusting the ring cutting depth of the ring cutter 22 is provided on the lower side of the mounting cylinder 1. A drive component for driving the stud 21 to rotate is provided inside the mounting cylinder 1. A distance measuring component for displaying the ring cutting depth of the ring cutter 22 in digital form is provided on both the mounting base 2 and the adjustment component.

[0021] like Figure 1 , Figure 3 and Figure 4 As shown, the adjustment assembly includes an external threaded sleeve 31, a mounting ring 32, an internal threaded sleeve 33, and a limiting sleeve 34. The external threaded sleeve 31 is slidably disposed on the lower side of the outer wall of the mounting cylinder 1. The mounting ring 32 is fused and fixed on the lower side of the outer wall of the mounting cylinder 1. The connection between the mounting ring 32 and the mounting cylinder 1 passes through the external threaded sleeve 31 and limits the external threaded sleeve 31 to prevent it from rotating. The internal threaded sleeve 33 is rotatably connected to the mounting ring 32. The internal threaded sleeve 33 and the external threaded sleeve 31 are threadedly engaged. The lower end of the external threaded sleeve 31 is fused and fixed with the limiting sleeve 34. When the limiting sleeve 34 is at the lowest position, its bottom height is the same as the bottom height of the ring cutter 22.

[0022] like Figure 2As shown, the drive assembly includes a connecting rod 41, a worm gear 42, a rotating shaft 43, a worm 44, a servo motor 45, a battery 46, a control module 47, and a switch a48. The connecting rod 41 is fused to the upper end of the stud 21, and the worm gear 42 is fused to the connecting rod 41. The rotating shaft 43 is rotatably mounted on the inner wall of the mounting cylinder 1, and the worm 44 is fused to the rotating shaft 43. The worm 44 and the worm gear 42 mesh with each other. The servo motor 45 is embedded in the inner wall of the mounting cylinder 1, and the output shaft end of the servo motor 45 is fixedly connected to the right end of the rotating shaft 43. The battery 46 is fused to the upper side of the inner wall of the mounting cylinder 1. The control module 47 is slidably mounted on the upper side of the inner wall of the mounting cylinder 1. The control module 47 and the mounting cylinder 1 are interference-fitted, so that the control module 47 cannot slide freely in the mounting cylinder 1. The top of the control module 47 is provided with a switch a48, which is the control switch for the servo motor 45.

[0023] like Figure 2 and Figure 5 As shown, the measuring components include a bracket 51, a laser rangefinder 52, a slider 53, an arc plate 54, a switch b55, and a display screen 56. The bracket 51 is welded and fixed to the bottom of the mounting base 2. The laser rangefinder 52 is mounted on the lower side of the bracket 51. Two sliders 53 are slidably arranged on the side wall of the mounting cylinder 1. Both sliders 53 are fixedly connected to the inner wall of the external threaded sleeve 31. An arc plate 54 is welded and fixed between the two sliders 53. The laser emitted by the laser rangefinder 52 can hit the center of the arc plate 54. After hitting the arc plate 54, the laser is reflected back to the laser rangefinder 52, thereby realizing the measurement of the distance between the laser rangefinder 52 and the arc plate 54. A switch b55 is provided on the top of the control module 47. The switch b55 is the control switch of the laser rangefinder 52. A display screen 56 is provided on the top left side of the control module 47. The control module 47 is electrically connected to the servo motor 45, the battery 46, the switch a48, the switch b55, the laser rangefinder 52, and the display screen 56.

[0024] In use, medical staff first rotate the internal threaded sleeve 33 clockwise. This rotation causes the external threaded sleeve 31 to slide downwards along the outer wall of the mounting sleeve 1, ensuring that the bottom height of the limiting sleeve 34 is flush with the bottom height of the ring cutter 22. Then, the medical staff presses switch b55 to activate the laser rangefinder 52. The laser rangefinder 52 measures the distance between itself and the arc-shaped plate 54 and transmits this data to the control module 47. Upon receiving the data, the control module 47 displays it digitally on the display screen 56. Initial state. The lower display screen 56 shows zero. Next, the medical staff rotates the internal threaded sleeve 33 counterclockwise. The internal threaded sleeve 33 drives the external threaded sleeve 31 upwards, causing the slider 53 to slide upwards. The distance between the arc plate 54 and the laser rangefinder 52 decreases accordingly. At this time, the numbers on the display screen 56 change accordingly. By observing the changes in the numbers on the display screen 56, the medical staff can precisely adjust the rising height of the external threaded sleeve 31, and thus adjust the rising height of the limiting sleeve 34. After adjusting the rising height of the limiting sleeve 34, the medical staff... The operator places the circumcision blade 22 close to the patient's skin, then presses switch a48 to start the servo motor 45. The servo motor 45 then drives the rotating shaft 43 to rotate. The rotating shaft 43, through the cooperation of the worm gear 44 and worm wheel 42, drives the connecting rod 41 to rotate, which in turn drives the circumcision blade 22 to rotate via the stud 21, performing a circumcision on the patient's skin. After the circumcision begins, the medical staff presses the sampling device downwards until the limiting sleeve 34 contacts the patient's skin. At this point, the circumcision ends, and the circumcision depth is the height to which the limiting sleeve 34 rises. This allows for precise control of the circumcision depth. When the circumcision blade 22 needs to be replaced, medical staff rotate the internal threaded sleeve 33 counterclockwise, causing the external threaded sleeve 31 and the limiting sleeve 34 to move upward, exposing the circumcision blade 22. At this point, medical staff can unscrew the circumcision blade 22 and replace it with another model of circumcision blade 22 to adjust the circumcision area. After use, medical staff remove the circumcision blade 22 for cleaning and disinfection, and at the same time clean and disinfect the limiting sleeve 34 for future use, thus achieving the effect of recycling.

[0025] It also includes protrusions 6, and multiple protrusions 6 are spaced out on the outer wall of the internal threaded sleeve 33.

[0026] By setting the protrusion 6, it is easy for medical staff to rotate the internal threaded sleeve 33.

[0027] It also includes a cover 7. The bottom of the limiting sleeve 34 is provided with a cover 7. By providing the cover 7, when the material feeder is not in use, the cover 7 can be put on the bottom of the limiting sleeve 34 to protect the ring cutter 22.

[0028] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A skin biopsy ring-shaped sampling device, comprising a mounting cylinder (1), a mounting base (2), a stud (21), and a ring cutter (22), wherein the mounting base (2) is fixedly connected to the lower side of the inner wall of the mounting cylinder (1), the stud (21) is rotatably connected to the mounting base (2), and the ring cutter (22) is threadedly connected to the lower end of the stud (21), characterized in that: It also includes an adjustment component, a drive component and a distance measuring component. An adjustment component for adjusting the circumferential cutting depth of the circumferential cutter (22) is provided on the lower side of the mounting cylinder (1). A drive component for driving the stud (21) to rotate is provided inside the mounting cylinder (1). A distance measuring component for displaying the circumferential cutting depth of the circumferential cutter (22) in digital form is provided on the mounting base (2) and the adjustment component.

2. The skin biopsy ring-shaped sampling device according to claim 1, characterized in that: The adjustment assembly includes an external threaded sleeve (31), a mounting ring (32), an internal threaded sleeve (33), and a limiting sleeve (34). The external threaded sleeve (31) is slidably disposed on the lower side of the outer wall of the mounting cylinder (1). The mounting ring (32) is fixedly connected to the lower side of the outer wall of the mounting cylinder (1). The connection between the mounting ring (32) and the mounting cylinder (1) passes through the external threaded sleeve (31). The internal threaded sleeve (33) is rotatably connected to the mounting ring (32). The internal threaded sleeve (33) and the external threaded sleeve (31) are threadedly engaged. The lower end of the external threaded sleeve (31) is fixedly connected to the limiting sleeve (34). When the limiting sleeve (34) is at the lowest position, its bottom height is the same as the bottom height of the ring cutter (22).

3. The skin biopsy ring-shaped sampling device according to claim 2, characterized in that: The drive assembly includes a connecting rod (41), a worm gear (42), a rotating shaft (43), a worm (44), a servo motor (45), a battery (46), a control module (47), and a switch a (48). The connecting rod (41) is fixedly connected to the upper end of the stud (21), and the worm gear (42) is fixedly connected to the connecting rod (41). The rotating shaft (43) is rotatably mounted on the inner wall of the mounting cylinder (1), and the worm (44) is fixedly connected to the rotating shaft (43). The worm (44) meshes with the worm gear (42). The servo motor (45) is embedded in the inner wall of the mounting cylinder (1), and the output shaft end of the servo motor (45) is fixedly connected to the right end of the rotating shaft (43). The battery (46) is fixedly connected to the upper side of the inner wall of the mounting cylinder (1), and the control module (47) is slidably mounted on the upper side of the inner wall of the mounting cylinder (1). The switch a (48) is mounted on the top of the control module (47).

4. The skin biopsy ring-shaped sampling device according to claim 3, characterized in that: The measuring components include a bracket (51), a laser rangefinder (52), a slider (53), an arc plate (54), a switch b (55), and a display screen (56). The bracket (51) is fixedly connected to the bottom of the mounting base (2). The laser rangefinder (52) is installed on the lower side of the bracket (51). Two sliders (53) are slidably arranged on the side wall of the mounting cylinder (1). Both sliders (53) are fixedly connected to the inner wall of the external threaded sleeve (31). An arc plate (54) is fixedly connected between the two sliders (53). The laser emitted by the laser rangefinder (52) can hit the middle of the arc plate (54). A switch b (55) is set on the top of the control module (47). A display screen (56) is set on the left side of the top of the control module (47).

5. The skin biopsy ring-shaped sampling device according to claim 4, characterized in that: It also includes protrusions (6), and multiple protrusions (6) are spaced out on the outer wall of the internal threaded sleeve (33).

6. The skin biopsy ring-shaped sampling device according to claim 5, characterized in that: It also includes a cover (7), and the bottom of the limiting sleeve (34) is provided with a cover (7).

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