Tweezers for clamping pathological sections

Abstract

The tweezers comprise a tweezers handle and further comprise an upper tweezers arm, a lower tweezers arm and a buffering piece, the right end of the upper tweezers arm and the right end of the lower tweezers arm are fixedly connected with the left end of the tweezers handle, the length of the upper tweezers arm is smaller than that of the lower tweezers arm, the upper tweezers arm is high in left and low in right, and the lower tweezers arm is low in left and high in right. The widths of the upper tweezers arm and the lower tweezers arm are gradually reduced from right to left; the buffer part comprises an L-shaped plate, a connecting rod and a pressing plate, the free end of a vertical plate of the L-shaped plate is downwards connected with the left end of the upper forceps arm, the free end of a transverse plate of the L-shaped plate faces leftwards, the connecting rod movably penetrates through the transverse plate of the L-shaped plate, the upper end of the connecting rod is connected with a limiting plate, the lower end of the connecting rod is connected with the pressing plate, and a spring is connected between the pressing plate and the transverse plate of the L-shaped plate; and the upper tweezers arm on the right side of the buffer piece is in threaded connection with a limiting bolt. The utility model solves the problems that when a pair of tweezers is used for clamping tissue slices, the opening and closing force of the tweezers is difficult to master, and the tissue slices are easy to damage or fall off.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a pair of forceps for picking up pathological slides. Background Technology

[0002] Forceps are a key tool in the preparation of pathological sections. For example, in the sample processing stage, forceps are needed to pick up tissue samples, especially small ones or those requiring delicate handling. Then, in the dehydration and paraffin infiltration processes, forceps are used to transfer tissue samples to avoid direct contact with the hands, so as to avoid contamination or damage to the tissue.

[0003] Due to improper control of the force and technique used by the user when handling tissue sections, especially thinner sections, the tissue sections are subjected to excessive clamping force, which can cause them to break. Conversely, insufficient clamping force can cause the tissue sections to fall off. The user's control over the force is difficult to achieve, which affects the preparation of pathological sections. Summary of the Invention

[0004] This invention addresses the problem that controlling the opening and closing force of tweezers when picking up tissue slides is difficult, easily causing damage or detachment of the tissue slides. It provides a tweezer for picking up pathological slides that can reduce damage to tissue slides and prevent detachment.

[0005] To solve the above problems, the technical solution of this utility model is:

[0006] A forceps for picking up pathological slides includes a handle, an upper forceps arm, a lower forceps arm, and a buffer. The right ends of both the upper and lower forceps arms are fixedly connected to the left ends of the handle. The length of the upper forceps arm is shorter than that of the lower forceps arm. The upper forceps arm is higher on the left and lower on the right, while the lower forceps arm is lower on the left and higher on the right. The width of both the upper and lower forceps arms gradually narrows from right to left. The buffer includes an L-shaped plate, a connecting rod, and a pressure plate. The free end of the vertical plate of the L-shaped plate faces downward and is connected to the left end of the upper forceps arm, while the free end of the horizontal plate faces left. The connecting rod is movably mounted on the horizontal plate of the L-shaped plate. The upper end of the connecting rod is connected to a limit plate, and the lower end is connected to a pressure plate. A spring connects the pressure plate and the horizontal plate of the L-shaped plate. A limit bolt is threaded onto the upper forceps arm on the right side of the buffer.

[0007] Furthermore, the pressure plate is a rectangular plate whose width gradually narrows from right to left. The pressure plate is located on the left side of the upper tweezers arm and directly above the left side of the lower tweezers arm. The pressure plate and the left side of the lower tweezers arm directly below it have the same shape and size.

[0008] Furthermore, a silicone pad is fixed to the lower side of the pressure plate, and a silicone pad is fixed to the left side of the upper side of the lower tweezer arm.

[0009] Further, the left end of the lower tweezers arm is connected with a guide column, the guide column is a triangular prism with a right-angled triangle longitudinal section, one straight surface of the guide column is connected with the left end of the lower tweezers arm, the left side surface is an inclined surface with the left end being higher than the right end, the left side surface of the second silica gel pad is an inclined surface with the upper end being inclined to the right, and the left side surface of the second silica gel pad is in the same plane with the left side surface of the guide column.

[0010] Further, the spring is outside the connecting rod between the horizontal plate and the pressing plate of the L-shaped plate, when the spring is in a natural state, the pressing plate is located at the lower side of the upper tweezers arm and is spaced from the left part of the lower tweezers arm, and the limiting plate contacts the top surface of the horizontal plate of the L-shaped plate.

[0011] Further, the upper tweezers arm is provided with a threaded hole matched with the limiting bolt, and the free end of the limiting bolt faces the lower tweezers arm.

[0012] By the above technical scheme, the utility model has the beneficial effects that:

[0013] When the slice is clamped, the pressing plate gives the slice a gradual clamping force, so that the slice is prevented from being subjected to a sudden force and the damage of the slice is reduced, and by limiting the distance of the limiting bolt extending out of the threaded hole, the final clamping force of the pressing plate on the slice can be controlled, so that the subsequent slices with the same thickness can be clamped safely, conveniently and quickly.

[0014] For the slices with different thicknesses, the distance of the limiting bolt extending out of the threaded hole only needs to be adjusted, so that the slices with different thicknesses can be clamped safely. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the utility model;

[0016] Figure 2 is Figure 1 is an enlarged view of part A in Fig.

[0017] Figure 3 is a sectional front view of the upper tweezers arm connected with the buffer member of the utility model.

[0018] In the drawings, the reference signs are as follows: 1, tweezer handle; 2, upper tweezers arm; 3, lower tweezers arm; 4, L-shaped plate; 4a, vertical plate; 4b, horizontal plate; 5, connecting rod; 6, pressing plate; 7, limiting plate; 8, spring; 9, limiting bolt; 10, first silica gel pad; 11, second silica gel pad; 12, guide column; and 13, threaded hole. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings and the specific embodiments:

[0020] For example, Figures 1-3As shown, a pair of forceps for pathological section includes a handle 1, an upper arm 2, a lower arm 3 and a buffer, the upper arm 2 and the lower arm 3 are both long strip-shaped plate bodies made of spring 8 steel material, the right ends of the upper arm 2 and the lower arm 3 are fixedly connected to the left end of the handle 1, the length of the upper arm 2 is less than that of the lower arm 3, the left end of the upper arm 2 is higher than the right end, the left end of the lower arm 3 is lower than the right end, the widths of the upper arm 2 and the lower arm 3 gradually decrease from right to left; the buffer includes an L-shaped plate 4, a connecting rod 5 and a pressing plate 6, the vertical plate 4a of the L-shaped plate 4 is connected to the left end of the upper arm 2, the horizontal plate 4b of the L-shaped plate 4 is connected to the left end of the upper arm 2, the connecting rod 5 is movably arranged on the horizontal plate 4b of the L-shaped plate 4, the connecting rod 5 is a rectangular rod, the upper end of the connecting rod 5 is connected to a limiting plate 7, the lower end of the connecting rod 5 is connected to the pressing plate 6, the limiting plate 7 is a circular plate body, the pressing plate 6 and the horizontal plate 4b of the L-shaped plate 4 are connected by a spring 8; the upper arm 2 on the right side of the buffer is threadedly connected to a limiting bolt 9.

[0021] The pressing plate 6 is a rectangular plate with gradually decreasing width from right to left, the pressing plate 6 is located on the left side of the upper arm 2, the pressing plate 6 is located directly above the left part of the lower arm 3, the pressing plate 6 has the same shape and size as the left part of the lower arm 3.

[0022] The lower side of the pressing plate 6 is fixedly connected to a silica gel pad 10, the left part of the upper side of the lower arm 3 is fixedly connected to a silica gel pad 11.

[0023] The pressing plate 6 and the horizontal plate 4b of the L-shaped plate 4 are parallel to the upper arm 2; the left end of the lower arm 3 is connected to a guide column 12, the guide column 12 is a triangular prism with a vertical cross section being a right triangle, one straight surface of the guide column 12 is connected to the left end of the lower arm 3, the left side surface is an inclined surface with the left end being higher than the right end, the left side surface of the silica gel pad 11 is an inclined surface with the left end being inclined to the right, and the left side surface of the silica gel pad 11 is in the same plane as the left side surface of the guide column 12.

[0024] The spring 8 is sleeved on the connecting rod 5 between the horizontal plate 4b of the L-shaped plate 4 and the pressing plate 6; when the spring 8 is in a natural state, the pressing plate 6 is located on the lower side of the upper arm 2 and has a spacing to the left part of the lower arm, and the limiting plate 7 contacts the top surface of the horizontal plate 4b of the L-shaped plate 4.

[0025] The upper arm 2 is provided with a threaded hole 13 corresponding to the limiting bolt 9, and the free end of the limiting bolt 9 is directed to the lower arm.

[0026] In use, first, rotate the limiting bolt 9, the free end of the limiting bolt 9 is located in the threaded hole 13; then, keep the left end of the utility model in an open state, use the guide column 12 at the left end of the lower tweezers arm 3 to shovel the slice, and place the slice on the upper side of the silica gel pad two 11 along the inclined surface of the guide column 12, keep the lower tweezers arm 3 stationary, slowly press the upper tweezers arm 2 downward, the left end of the upper tweezers arm 2 moves toward the lower tweezers arm 3, the pressing plate 6 moves toward the left part of the lower tweezers arm 3 due to being connected to the upper tweezers arm 2 through the connecting rod 5 and the L-shaped plate 4, when the pressing plate 6 contacts the slice on the silica gel pad two 11, continue to slowly press the upper tweezers arm 2 downward, the upper tweezers arm 2 continues to drive the L-shaped plate 4 to move downward, at this time, the horizontal plate 4b of the L-shaped plate 4 gives the spring 8 a pressure, and the spring gradually compresses, the spring 8 gives the pressing plate 6 a larger force, therefore, after the pressing plate 6 contacts the slice, with the process of continuously slowly pressing the upper tweezers arm 2, the pressing plate 6 can gradually increase the force on the slice through the silica gel pad one 10, since the clamping force of the pressing plate 6 on the slice is gradually increased, the slice can be prevented from being damaged by a sudden clamping force; until the pressing plate 6 clamps and fixes the slice without damaging the slice, stop the downward movement of the upper tweezers arm 2, rotate the limiting bolt 9 in the reverse direction, so that the free end of the limiting bolt 9 contacts the lower tweezers arm 3, after the lower end of the limiting bolt 9 contacts the lower tweezers arm 3, the stroke of the movement of the upper tweezers arm 2 toward the lower tweezers arm 3 is limited, and the stroke of the compression of the spring 8 is also limited, and the final force of the pressing plate 6 on the slice is also limited, in the subsequent clamping of the slice of the same thickness, keep the position of the limiting bolt 9 unchanged, repeat the above process, and the slice can be clamped without worrying about damaging the slice, and the slice can be clamped conveniently and quickly; and for slices of different thicknesses, only the distance of the limiting bolt 9 extending out of the threaded hole 13 needs to be adjusted, and the slices of different thicknesses can be clamped safely and conveniently.

[0027] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, within the scope of the utility model, that is, the disclosure range, any equivalent or equivalent transformation or replacement of the technical solutions of the utility model belongs to the protection range of the utility model.

Claims

1. A forceps for picking up pathological sections, comprising a forceps handle (1), characterized in that, The device also comprises upper pincers arm (2), lower pincers arm (3) and buffer, the right end of upper pincers arm (2) and lower pincers arm (3) are fixedly connected with the left end of pincers handle (1), the length of upper pincers arm (2) is less than that of lower pincers arm (3), the left side of upper pincers arm (2) is higher than the right side, the left side of lower pincers arm (3) is lower than the right side, the width of upper pincers arm (2) and lower pincers arm (3) gradually narrows from right to left; the buffer comprises L-shaped plate (4), connecting rod (5) and pressing plate (6), the vertical plate (4a) of L-shaped plate (4) is connected with the left end of upper pincers arm (2) at the free end, the free end of horizontal plate (4b) is leftward, the connecting rod (5) is movably arranged on the horizontal plate (4b) of L-shaped plate (4), the upper end of connecting rod (5) is connected with limiting plate (7), the lower end is connected with pressing plate (6), the spring (8) is arranged between the horizontal plate (4b) of L-shaped plate (4) and pressing plate (6); the upper pincers arm (2) on the right side of the buffer is threadedly connected with limiting bolt (9).

2. A forceps for picking up a pathological section according to claim 1, wherein The pressing plate (6) is a long rectangular plate with gradually narrowing width from right to left, the pressing plate (6) is located on the left side of upper pincers arm (2), the pressing plate (6) is located directly above the left part of lower pincers arm (3), the shape and size of pressing plate (6) are same as those of the left part of lower pincers arm (3) directly below.

3. A forceps for picking up a pathological section according to claim 2, wherein The lower side of pressing plate (6) is fixedly connected with silica gel pad one (10), the left part of the upper side of lower pincers arm (3) is fixedly connected with silica gel pad two (11).

4. A forceps for picking up a pathological section according to claim 3, wherein The left end of lower pincers arm (3) is connected with guide column (12), the guide column (12) is a triangular prism with a right-angled triangle longitudinal section, one straight surface of guide column (12) is connected with the left end of lower pincers arm (3), the left side is an inclined surface with the left side being lower than the right side, the left side of silica gel pad two (11) is an inclined surface with the left end being inclined to the right, the left side of silica gel pad two (11) is in the same plane with the left side of guide column (12).

5. The forceps for holding a pathological section according to claim 1, wherein The spring (8) is sleeved outside the connecting rod (5) between the horizontal plate (4b) of L-shaped plate (4) and pressing plate (6); when the spring (8) is in a natural state, the pressing plate (6) is located on the lower side of upper pincers arm (2) and has a spacing to the left part of lower pincers arm, the limiting plate (7) contacts the top surface of horizontal plate (4b) of L-shaped plate (4).

6. The forceps for holding a pathological section according to claim 1, wherein The upper pincers arm (2) is provided with threaded hole (13) corresponding to limiting bolt (9), the free end of limiting bolt (9) is directed to lower pincers arm.

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