Soft tissue sampling device

Abstract

The utility model discloses a soft tissue sampling apparatus, relates to medical instrument technical field, including handle, the handle includes fixed handle and movable handle, fixed handle bottom is fixedly connected with fixed block, fixed block front side is fixedly connected with tube body, on the tube body is provided with open slot close to the front end, in addition, the open slot is provided with two shear blade, and the open slot is provided with two shear blades. The two symmetrical arc-shaped shearing pieces are arranged at the ends of the tube body, the movable handle is pulled, the two shearing pieces are driven to deflect and be closed through transmission of the worm gear, the worm, the first movable block, the second movable block and the connecting plate, and soft tissue is sheared and sampled. Meanwhile, the worm gear, the worm, the first movable block, the second movable block, the connecting plate and other components are hidden in the handle and the tube body, extra space is not occupied for force transmission, and therefore the soft tissue sampler is suitable for soft tissue sampling in a small space.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to soft tissue sampling equipment. Background Technology

[0002] Soft tissue refers to the subcutaneous tissue, muscles, tendons, ligaments, joint capsules, synovial bursae, nerves, and blood vessels of the human body. Soft tissue is a relatively important type of soft tissue in the human body. When there are lesions in the soft tissue, a sample of the soft tissue is taken from the body through methods such as cutting, forceps, or puncture for examination, facilitating pathological examination.

[0003] A soft tissue sampling mechanism disclosed in the prior art (CN219720745U) uses two metal rods to drive two scoops to merge for sampling. However, it requires a certain amount of space to separate the scoops during use. When sampling soft tissue in small spaces such as the nasal cavity and throat, the space is easily limited, causing the scoops to not separate enough to cover the soft tissue. Moreover, when sampling in small spaces, it is also limited by angle, as it cannot rotate to select the sampling direction and angle, resulting in blind spots. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, such as insufficient space for expansion and limited angles, and to provide a soft tissue sampling device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a soft tissue sampling device, including a handle, the handle comprising a fixed handle and a movable handle, a fixed block fixedly connected to the bottom of the fixed handle, and a tube fixedly connected to the front side of the fixed block, a slot being formed near the front end of the tube, and two scissor blades being provided in the slot, a cavity being formed at the top of the fixed handle, and the tube extending into the cavity, two connecting rods being provided inside the tube, the front ends of the two connecting rods being fixedly connected to adjacent scissor blades respectively, and the rear ends of the two connecting rods extending into the cavity, the movable handle being located in front of the fixed handle, the movable handle being movably connected to the fixed handle, and the movable handle being drively connected to two connecting plates, and a torsion spring connecting the movable handle and the fixed handle.

[0006] As described above, both of the scissor blades are arc-shaped and symmetrically arranged. Both of the scissor blades have a beveled top, and the bevels on the two scissor blades are located in the same direction.

[0007] As described above, the front end of the tube is closed and has a tapered structure. An annular groove is provided on the front side of the slot, and the front sides of the two shear blades are inserted into the annular groove.

[0008] As described above, a first movable block is movably connected inside the cavity, and a groove is provided on the front side of the first movable block. A second movable block is movably connected inside the groove, and two connecting rods are fixedly connected to the first movable block and the second movable block, respectively.

[0009] As described above, one of the connecting rods has a through hole that passes through the second movable block, and the other connecting rod passes through the through hole and is fixedly connected to the first movable block.

[0010] As described above, the second movable block has several annularly arrayed toothed grooves on its periphery and the inner side of the groove. The groove contains gears that mesh with both the first and second movable blocks.

[0011] As described above, a slot is provided at the bottom of the cavity, the top of the movable handle is inserted into the slot and is movably connected to the slot, a worm is fixedly connected to the top of the movable handle, and a worm wheel is fixedly connected to the front side of the second movable block, and the worm wheel and the worm are meshed.

[0012] Compared with existing technologies, this soft tissue sampling device has the following advantages:

[0013] I. This utility model uses two symmetrical arc-shaped shear blades at the end of the tube. By turning the movable handle, the two shear blades deflect and close through the transmission of the worm gear, worm, first movable block, second movable block and connecting plate, so as to cut and sample soft tissue. At the same time, the worm gear, worm, first movable block, second movable block and connecting plate and other components are hidden in the handle and tube, without occupying additional space for force transmission. Therefore, it is suitable for sampling soft tissue in small spaces.

[0014] Second, this utility model uses a tube to insert the scissor into the body. The outer side of the tube is smooth and there are no external mechanisms. The tube can be rotated by turning the handle, which allows for sampling of soft tissue at different angles and provides a large sampling range.

[0015] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the shearing structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the cavity in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the first and second movable blocks of this utility model.

[0020] In the diagram: 1. Fixed handle; 2. Movable handle; 3. Fixed block; 4. Tube body; 5. Shear blade; 6. Connecting rod; 7. Second movable block; 8. First movable block; 9. Gear; 10. Worm; 11. Worm wheel. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-4 As shown, this utility model provides a technical solution for a soft tissue sampling device: a soft tissue sampling device, including a handle, the handle including a fixed handle 1 and a movable handle 2, a fixed block 3 is fixedly connected to the bottom of the fixed handle 1, and a tube body 4 is fixedly connected to the front side of the fixed block 3, a slot is opened on the tube body 4 near the front end, and two scissor blades 5 are provided in the slot, a cavity is opened at the top of the fixed handle 1, and the tube body 4 extends into the cavity, and two connecting rods 6 are provided in the tube body 4, the front ends of the two connecting rods 6 are fixedly connected to the adjacent scissor blades 5 respectively, and the rear ends of the two connecting rods 6 extend into the cavity, the movable handle 2 is located in front of the fixed handle 1, the movable handle 2 is movably connected to the fixed handle 1, and the movable handle 2 is drivenly connected to two connecting plates, and a torsion spring is connected between the movable handle 2 and the fixed handle 1.

[0023] According to the overall structure of the device, hold the handle and insert the tube 4 into the body, with the end of the tube 4 inserted into the soft tissue. When the tube 4 is inserted into the soft tissue, the soft tissue is squeezed and compressed. After insertion, the soft tissue recovers, causing part of it to be squeezed into the slot. Then, turn the movable handle 2, which compresses the torsion spring and drives the connecting plate to deflect. When the connecting plate deflects, it causes the two shear blades 5 to deflect and close, thereby cutting off the soft tissue and pulling the tube 4 out of the body, taking the sample out.

[0024] like Figure 2 As shown, both shear pieces 5 are arc-shaped and symmetrically arranged. Both shear pieces 5 have a beveled top, and the bevels on both shear pieces 5 are in the same direction.

[0025] The curved structure allows the scissor 5 to fit snugly against the tube 4, facilitating the deflection of the scissor 5. Furthermore, when the scissor 5 is closed, there is more internal space, allowing for the collection of more samples. The beveled surface increases the sharpness of the scissor 5, making it easier to cut soft tissue.

[0026] like Figure 2 As shown, the front end of the tube body 4 is closed and has a tapered structure. An annular groove is opened on the front side of the slot, and the front sides of the two shear blades 5 are inserted into the annular groove.

[0027] The tapered end allows the tube 4 to be inserted more easily into the soft tissue, facilitating the removal of the soft tissue. The annular groove limits the shear blade 5 on the side away from the connecting rod 6, preventing the shear blade 5 from deflecting during the deflection process.

[0028] like Figure 3 , 4 As shown, a first movable block 8 is movably connected inside the cavity, and a groove is provided on the front side of the first movable block 8. A second movable block 7 is movably connected inside the groove. Two connecting rods 6 are fixedly connected to the first movable block 8 and the second movable block 7, respectively. A through hole is provided on one connecting rod 6, which passes through the second movable block 7. The other connecting rod 6 passes through the through hole and is fixedly connected to the first movable block 8. Several annularly arrayed toothed grooves are provided on the periphery of the second movable block 7 and the inner side of the groove. A gear 9 is provided in the groove, and the gear 9 meshes with both the first movable block 8 and the second movable block 7. A slot is provided at the bottom of the cavity. The top of the movable handle 2 is inserted into the slot and is movably connected to the slot. A worm gear 10 is fixedly connected to the top of the movable handle 2. A worm wheel 11 is fixedly connected to the front side of the second movable block 7, and the worm wheel 11 meshes with the worm gear 10.

[0029] By turning the movable handle 2, the movable handle 2 deflects and drives the worm gear 10 to rotate, which in turn drives the second movable block 7 to rotate through the worm wheel 11. When the second movable block 7 rotates, it drives the gear 9 to rotate through the tooth groove. Since the position of the gear 9 is fixed, it drives the first movable block 8 to rotate through the tooth groove. The first movable block 8 and the second movable block 7 rotate in opposite directions, thereby driving the two shear blades 5 to deflect respectively, so that the two shear blades 5 close together for cutting and sampling.

[0030] Working principle: When in use, hold the handle and insert the tube 4 into the body, with the end of the tube 4 inserted into the soft tissue. When the tube 4 is inserted into the soft tissue, the soft tissue is compressed. After insertion, the soft tissue recovers, causing part of it to be squeezed into the groove. Then, turn the movable handle 2, which compresses the torsion spring. When the movable handle 2 deflects, it drives the worm gear 10 to rotate, which in turn drives the second movable block 7 to rotate through the worm wheel 11. When the second movable block 7 rotates, it drives the gear 9 to rotate through the tooth groove. Since the position of the gear 9 is fixed, it drives the first movable block 8 to rotate through the tooth groove. The first movable block 8 and the second movable block 7 rotate in opposite directions, thereby causing the two shear blades 5 to deflect and close, thus cutting off the soft tissue and pulling the tube 4 out of the body, taking the sample out.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soft tissue sampling device, including a handle, characterized in that: The handle includes a fixed handle (1) and a movable handle (2). A fixed block (3) is fixedly connected to the bottom of the fixed handle (1), and a tube (4) is fixedly connected to the front side of the fixed block (3). A slot is opened on the tube (4) near the front end, and two shear blades (5) are provided in the slot. A cavity is opened at the top of the fixed handle (1), and the tube (4) extends into the cavity. Two connecting rods (6) are provided in the tube (4). The front ends of the two connecting rods (6) are fixedly connected to the adjacent shear blades (5), and the rear ends of the two connecting rods (6) extend into the cavity. The movable handle (2) is located in front of the fixed handle (1). The movable handle (2) is movably connected to the fixed handle (1), and the movable handle (2) is drivenly connected to the two connecting plates. A torsion spring is connected between the movable handle (2) and the fixed handle (1).

2. The soft tissue sampling device according to claim 1, characterized in that: Both of the scissor blades (5) are arc-shaped and symmetrically arranged. Both of the scissor blades (5) have a sloping surface at the top, and the sloping surfaces on the two scissor blades (5) are located in the same direction.

3. The soft tissue sampling device according to claim 1, characterized in that: The front end of the tube (4) is closed and has a tapered structure. An annular groove is provided on the front side of the slot, and the front sides of the two shear blades (5) are inserted into the annular groove.

4. The soft tissue sampling device according to claim 1, characterized in that: The cavity is movably connected to a first movable block (8), and a groove is provided on the front side of the first movable block (8). A second movable block (7) is movably connected to the groove. Two connecting rods (6) are fixedly connected to the first movable block (8) and the second movable block (7) respectively.

5. The soft tissue sampling device according to claim 4, characterized in that: One of the connecting rods (6) has a through hole and passes through the second movable block (7), while the other connecting rod (6) passes through the through hole and is fixedly connected to the first movable block (8).

6. The soft tissue sampling device according to claim 4, characterized in that: The second movable block (7) has several annularly arrayed toothed grooves on its periphery and inside the groove. The groove contains a gear (9), which meshes with both the first movable block (8) and the second movable block (7).

7. The soft tissue sampling device according to claim 4, characterized in that: The cavity has a slot at the bottom, the top of the movable handle (2) is inserted into the slot and is movably connected to the slot, the top of the movable handle (2) is fixedly connected to the worm (10), the front side of the second movable block (7) is fixedly connected to the worm wheel (11), and the worm wheel (11) and the worm (10) mesh.

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