Tissue sample cutting and collecting device

Abstract

The utility model provides a tissue sample cutting and collecting device which is provided with a cutting direction and comprises a hollow body, and the two opposite sides, in the cutting direction, of the inner wall of the hollow body are the first side and the second side respectively. Two ends of the hollow main body in the length direction are respectively an exposed end and a cutting end, and the cutting end is provided with a cutting edge. According to the tissue sample cutting and collecting device, the cutting end of the hollow main body is vertically pressed into the to-be-sampled tissue, the cutting wire is switched from an initial state to a cutting completion state, the cutting wire cuts the tissue entering the inner side of the hollow main body, and regular sampling of the tissue is achieved; the tension of the cutting wire can be adjusted, in the non-use state, the tension of the cutting wire can be lowered, it is avoided that the cutting wire is kept in the high-tension state for a long time, and the service life of the cutting wire is affected, the tension of the cutting wire is increased to the proper tension before use, and it is ensured that the cutting wire can smoothly cut tissue.

Description

TECHNICAL FIELD

[0001] The utility model relates to tissue sample cutting collection technical field especially relates to a tissue sample cutting collection device. BACKGROUND

[0002] In biomedical and scientific research, the acquisition of tissue samples is one of the key steps of experiments and analysis, and the acquisition of complete and standardized tissue samples is crucial for subsequent various research applications, such as gene sequencing, tissue analysis, pathological research and sample preservation, etc.

[0003] The existing sampling tools have the following shortcomings in the process of tissue sample collection, which cannot meet the high requirements of scientific research applications on sample integrity and standardization:

[0004] The tools currently used mainly include surgical scissors, dissecting knives, and puncture needles. These tools often lack precise control over the cutting depth and shape, resulting in irregularly shaped samples and difficulty in standardizing the volume, which adversely affects subsequent analysis, especially when multiple sampling or comparative experiments are required. Irregular samples increase the error range of the experiment, affecting the accuracy of the research results. Moreover, traditional cutting tools can cause mechanical damage to the sample during contact with the tissue, especially when using scissors, the sample surface is often squeezed or twisted, thereby damaging the cell structure and reducing the accuracy of the experiment. When cutting deep tissues, the operation process is complex, making it difficult to ensure the integrity and consistency of the tissue sample. In addition, when transferring the collected tissue, irregular tissue samples are prone to slipping, affecting the normal progress of the experiment.

[0005] Therefore, to solve the above problems, the utility model provides a tissue sample cutting collection device that can ensure the regular shape of the tissue sample and prevent it from slipping during transfer. CONTENT OF THE UTILITY MODEL

[0006] To solve the above-mentioned problems of existing tissue sample cutting collection tools, the utility model provides a tissue sample cutting collection device.

[0007] According to one object of the utility model, the utility model provides a tissue sample cutting collection device, which is provided with a cutting direction and includes a hollow main body. The inner wall of the hollow main body has a first side and a second side on the opposite sides in the cutting direction. The two ends of the hollow main body in the length direction are an exposed end and a cutting end, respectively. The cutting end is provided with a cutting edge.

[0008] The hollow body is provided with a tension-adjustable cutting wire inside near the cutting end, the cutting wire is movably connected to the hollow body in the cutting direction through a guide assembly, a shielding assembly is arranged between the cutting wire and the hollow body, the cutting wire has at least two working states, namely an initial state and a cutting completion state, when the cutting wire is in the initial state, the cutting wire and the shielding assembly are hidden in the first side inner wall of the hollow body, when the cutting wire is in the cutting completion state, the cutting wire is hidden in the second side inner wall of the hollow body, and the shielding assembly shields the cutting end of the hollow body.

[0009] Preferably, the shape of the hollow body in the cutting direction is square or circular, and the radial outer side of the hollow body gradually decreases near the cutting end to form the cutting edge.

[0010] Preferably, the guide assembly is hidden in the inner wall of the hollow body.

[0011] The first side of the hollow body is provided with a groove for accommodating the cutting wire and the shielding assembly, and the second side of the hollow body is provided with a groove for accommodating the cutting wire.

[0012] Preferably, the guide assembly includes a lower slide, a lower slide block, a connecting rod, an upper slide block and an upper slide, the inner wall of the hollow body is provided with a lower slide on both sides perpendicular to the cutting direction, the lower slide is arranged in the cutting direction, the lower slide block is movably connected in the lower slide, the cutting wire is connected between the lower slide blocks, the connecting rod extends from the lower slide blocks towards the exposed end, the upper slide block is connected to the connecting rod, the upper slide is arranged on the side of the hollow body near the exposed end, the upper slide is parallel to the lower slide, the upper slide block is movably connected in the upper slide, and the end of the connecting rod is located outside the hollow body, and the end of the connecting rod is connected through a handle.

[0013] Preferably, the lower slide block is provided with a through hole in a direction perpendicular to the cutting direction, the end of the cutting wire is arranged inside the through hole, and the cutting wire and the lower slide block are connected through a pawl structure.

[0014] Preferably, the shielding assembly includes a winding rod and a shielding piece, the winding rod is parallel to the cutting wire, the winding rod and the hollow body are connected through a rotating pair, a coil spring is arranged between the winding rod and the hollow body, in the cutting direction, one end of the shielding piece is connected to the winding rod, the other end of the shielding piece is connected to the cutting wire, and the shielding piece is arranged to be wound around the outside of the winding rod.

[0015] Preferably, the exposed end is connected with a pushing assembly, which is arranged to move along the length direction of the hollow body to push the target tissue in the hollow body out through the cutting end.

[0016] Preferably, the pushing assembly and the exposed end are detachably connected.

[0017] Preferably, the pushing assembly comprises a cover, a push rod and a push piece, the cover and the exposed end are connected through threads, the push rod is movably connected to the cover along the length direction of the hollow body, the first end of the push rod is exposed outside the cover, the second end of the push rod is located inside the cover, and the push piece is arranged at the second end of the push rod, and the outer periphery of the push piece is close to the inner wall of the hollow body.

[0018] Preferably, a transparent window is arranged on the hollow body, and a scale is arranged on the transparent window along the length direction of the hollow body.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The tissue sample cutting and collecting device realizes regular sampling of the tissue by vertically pressing the cutting end of the hollow body into the tissue to be sampled and switching the cutting wire from the initial state to the cutting completion state to cut the tissue entering the inside of the hollow body, wherein the shielding assembly shields the tissue inside the hollow body to avoid falling of the tissue during the transfer process.

[0021] The tension of the cutting wire is adjustable, in the non-use state, the tension of the cutting wire can be adjusted to be low to avoid long-time high tension of the cutting wire, which affects the service life of the cutting wire, and the tension of the cutting wire is adjusted to be appropriate before use to ensure that the cutting wire can smoothly cut the tissue.

[0022] The present application will be further described below in combination with the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 FIG. 1 is a schematic view of a whole front section of one embodiment of the tissue sample cutting and collecting device according to the present application;

[0024] Figure 2 FIG. 3 is a schematic view of the connection between the guide assembly and the hollow body of one embodiment of the tissue sample cutting and collecting device according to the present application;

[0025] Figure 3 FIG. 5 is a schematic view of the cutting wire in the initial state of one embodiment of the tissue sample cutting and collecting device according to the present application;

[0026] Figure 4The utility model discloses a tissue sample cutting and collecting device, which comprises a hollow main body, a cutting wire, a handle, a pawl structure and a shielding assembly.

[0027] Figure 5 The utility model discloses a tissue sample cutting and collecting device, which comprises a hollow main body, a cutting wire, a handle, a pawl structure and a shielding assembly.

[0028] Figure 6 The utility model discloses a tissue sample cutting and collecting device, which comprises a hollow main body, a cutting wire, a handle, a pawl structure and a shielding assembly.

[0029] Figure 7 The utility model discloses a tissue sample cutting and collecting device, which comprises a hollow main body, a cutting wire, a handle, a pawl structure and a shielding assembly.

[0030] Figure 8 The utility model discloses a tissue sample cutting and collecting device, which comprises a hollow main body, a cutting wire, a handle, a pawl structure and a shielding assembly. DETAILED DESCRIPTION

[0031] The following description is used to explain the utility model in detail so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only used as examples, and other obvious modifications can be thought of by those skilled in the art. The basic principles of the utility model defined in the following description can be applied to other implementation schemes, modification schemes, improvement schemes, equivalent schemes and other technical schemes without departing from the spirit and scope of the utility model.

[0032] Please refer to Figures 1-8 The utility model provides a technical scheme: a tissue sample cutting and collecting device is provided with a cutting direction on the tissue sample cutting and collecting device, and comprises a hollow main body 100, the inner wall of the hollow main body 100 is opposite on the cutting direction two sides respectively as first side 100a and second side 100b, the two ends of the length direction of the hollow main body 100 are respectively exposed end 101 and cutting end 102, and the cutting end 102 is provided with cutting edge 1021.

[0033] The inner side of the hollow main body 100 is provided with tension-adjustable cutting wire 200 in the mode close to the cutting end 102, the cutting wire 200 is set to be suitable for moving along the cutting direction to cut the target tissue entering the inner side of the hollow main body 100, the shielding assembly 400 is arranged between the cutting wire 200 and the hollow main body 100, the cutting wire 200 has at least two working states, which are initial state and cutting completion state respectively, when the cutting wire 200 is in initial state, referring to Figure 3 and 4, the cutting wire 200 and the shielding assembly 400 are hidden in the inner wall of the first side 100a of the hollow body 100, when the cutting wire 200 is in the cutting completion state, see Figure 5 and 6 , the cutting wire 200 is hidden in the inner wall of the second side 100b of the hollow body 100, and the shielding assembly 400 shields the cutting end 102 of the hollow body 100.

[0034] The tissue sample cutting and collecting device vertically presses the cutting end 102 of the hollow body 100 into the tissue to be sampled, switches the cutting wire 200 from the initial state to the cutting completion state, and cuts the tissue inside the hollow body 100 to achieve regular sampling of the tissue, wherein the shielding assembly 400 shields the tissue inside the hollow body 100 to avoid falling of the tissue during transfer.

[0035] The tension of the cutting wire 200 can be adjusted, and in the non-use state, the tension of the cutting wire 200 can be adjusted to be low to avoid the cutting wire 200 being in a high tension state for a long time, which affects the service life of the cutting wire 200. Before use, the tension of the cutting wire 200 is adjusted to an appropriate tension to ensure that the cutting wire 200 can smoothly cut the tissue.

[0036] It should be noted that the cutting wire 200 can be an electric heating wire or a non-heating wire, when the cutting wire 200 is an electric heating wire, the cutting wire 200 is connected to an external heating device to heat it, thereby realizing the cutting of the tissue by the cutting wire 200.

[0037] The shape of the hollow body 100 in the cutting direction is square or circular.

[0038] The radial outer side of the hollow body 100 gradually decreases in a manner close to the cutting end 102 to form the cutting edge 1021.

[0039] The first side 100a of the hollow body 100 is provided with a groove for accommodating the cutting wire 200 and the shielding assembly 400, and the second side 100b of the hollow body 100 is provided with a groove for accommodating the cutting wire 200.

[0040] The cutting wire 200 is movably connected to the hollow body 100 through the guide assembly 300, the guide assembly 300 is hidden in the inner wall of the hollow body 100, the inner wall of the hollow body 100 is provided with a slide 301 on both sides perpendicular to the cutting direction, the slide 301 is arranged along the cutting direction, the slide 301 movably connects a slide block 302, and the cutting wire 200 is connected between the slide blocks 302.

[0041] In one embodiment, referring to Figure 2 The lower sliding block 302 is connected with a connecting rod 303 extending towards the exposed end 101, the connecting rod 303 is connected with an upper sliding block 305, the hollow body 100 is provided with an upper sliding track 304 near the exposed end 101, the upper sliding track 304 and the lower sliding track 301 are parallel to each other, the upper sliding track 304 is movably connected with the upper sliding block 305, the end of the connecting rod 303 is located outside the hollow body 100, and the end of the connecting rod 303 is connected with the handle 306. Preferably, the handle 306, the connecting rod 303, the upper sliding block 305 and the lower sliding block 302 are integrally connected.

[0042] In another embodiment, referring to Figure 8 The lower sliding track 301 is provided with a lower guide wheel 307 near one end of the second side 100b of the hollow body 100, the upper side of the lower guide wheel 307 is provided with an upper guide wheel 308, the lower sliding block 302 is connected with a flexible member 309, the flexible member 309 is guided by the lower guide wheel 307 and the upper guide wheel 308, the end of the flexible member 309 penetrates out of the outside of the hollow body 100, and the end of the flexible member 309 is connected with the handle 306.

[0043] The lower sliding block 302 is provided with a through hole 3021 in a direction perpendicular to the cutting direction, the end of the cutting wire 200 penetrates into the inside of the through hole 3021, and the cutting wire 200 and the lower sliding block 302 are connected through a ratchet structure 3022. Specifically, the end of the cutting wire 200 is provided with a ratchet lock in the length direction of the cutting wire 200, the lower sliding block 302 is provided with a buckle matched with the ratchet lock, in use, the end of the cutting wire 200 is pulled, the ratchet structure 3022 on the cutting wire 200 unidirectionally limits the cutting wire 200 and the lower sliding block 302, thereby adjusting the tension of the cutting wire 200, the buckle is separated from the ratchet lock by fluctuation, the tension of the cutting wire 200 is reduced, and the cutting wire 200 and the lower sliding block 302 are separated.

[0044] The shielding assembly 400 is arranged on the first side 100a of the hollow body 100 facing the cutting wire 200, the shielding assembly 400 comprises a winding rod 401 and a shielding piece 402, the winding rod 401 and the cutting wire 200 are parallel to each other, the winding rod 401 and the hollow body 100 are connected through a revolute pair, and a coil spring is arranged between the winding rod 401 and the hollow body 100, one end of the shielding piece 402 is connected to the winding rod 401 in the cutting direction, the other end of the shielding piece 402 is connected to the cutting wire 200, and the shielding piece 402 is arranged to be wound on the outside of the winding rod 401. Preferably, the shielding piece 402 is a mesh-shaped shielding piece 402.

[0045] Further, referring to Figure 1 The exposed end 101 is connected with a pushing assembly 500, the pushing assembly 500 is arranged to move along the length direction of the hollow body 100 to push the target tissue in the hollow body 100 out through the cutting end 102. The pushing assembly 500 is added to solve the problem of complex traditional tissue sample taking process, specifically, after the traditional tool obtains the sample, manual operation is often needed for sample extraction, which not only wastes time and effort, but also easily causes sample damage, for example, when a puncture needle is used to cut deep tissue, the tissue may be left on the inner wall of the needle or the inner cavity of the tool, and when taken out, it is easy to break or adhere, affecting the integrity of the sample.

[0046] Further, the pushing assembly 500 and the exposed end 101 are detachably connected.

[0047] Specifically, the pushing assembly 500 comprises a cover 501, a push rod 502 and a push piece 503, the cover 501 and the exposed end 101 are detachably connected through threads, the push rod 502 is movably connected to the cover 501 along the length direction of the hollow body 100, the first end of the push rod 502 is exposed to the outside of the cover 501, the second end of the push rod 502 is located on the inside of the cover 501, the push piece 503 is arranged on the second end of the push rod 502, and the outer periphery of the push piece 503 is close to the inner wall of the hollow body 100.

[0048] The hollow body 100 is provided with a transparent window 103, and the transparent window 103 is provided with a scale 104 arranged along the length direction of the hollow body 100.

[0049] The specific specifications of the hollow body 100 can be customized, such as a sampling space of 1cm×1cm.

[0050] In one embodiment, the hollow body 100 is made of medical grade 316L stainless steel, the outer dimension of the hollow body 100 is 1.2cmx1.2cm, the inner dimension of the hollow body 100 is 1cmx1cm, the total length of the hollow body 100 is 10cm, and the wall thickness of the hollow body 100 is 1mm;

[0051] The width of the upper slide 304 and the lower slide 301 is 2mm, and the depth is 1mm;

[0052] The handle 306 is made of medical grade PP plastic, the lower slide 302 and the upper slide 305 are made of medical grade PEEK material, and the cutting wire 200 is made of medical grade 316L stainless steel wire with a diameter of 0.2mm.

[0053] Usage:

[0054] S1. Preoperative preparation, specifically including:

[0055] S11. Routine disinfection; S12. Check the connection of each part;

[0056] S2. Sampling step, specifically including:

[0057] S21. Determine the sampling position; S22. Press the cutter vertically, press the cutting edge 1021 of the cutter into the tissue to be sampled, such as 1cm deep, and the tissue enters the hollow tube; S23. Push the handle 306; S24. The handle 306 drives the cutting wire 200 to cut the bottom of the tissue through the connecting rod 303; S25. Take out the device; S26. Operate the push-out assembly 500 to separate the sample;

[0058] S3. Postoperative treatment, specifically including:

[0059] S31. Cleaning and disinfection; S32. Inspection and maintenance; S33. Proper storage.

[0060] In summary, the tissue sample cutting and collecting device has the following advantages:

[0061] 1. One-time sampling, high efficiency;

[0062] 2. Accurate sample volume;

[0063] 3. Simple operation, reducing the difficulty of use;

[0064] 4. Neat cutting of the wound surface, reducing tissue damage;

[0065] 5. Simple structure, easy maintenance.

[0066] The above-described embodiments are only used for illustrating the technical ideas and characteristics of the present application, and the purpose is to enable the skilled in the art to understand the content of the present application and to implement it, and the present embodiment cannot be used to limit the patent application range of the present application, that is, any equivalent changes or modifications made according to the spirit disclosed in the present application still fall within the patent range of the present application.

Claims

1. A tissue sample cutting and collecting device, which is provided with a cutting direction, characterized in that, The utility model relates to a cutting device, including hollow main part (100), the inner wall of hollow main part (100) is first side (100a) and second side (100b) respectively on the two sides of cutting direction, the both ends of hollow main part (100) length direction are exposed end (101) and cutting end (102) respectively, cutting end (102) is provided with cutting edge (1021), The inner side of hollow main part (100) is provided with tension adjustable cutting wire (200) in the mode of being close to cutting end (102), cutting wire (200) is connected hollow main part (100) in the mode of being active along cutting direction through guide assembly (300), cutting wire (200) and hollow main part (100) are provided with shielding assembly (400) between, cutting wire (200) has at least two working conditions, is initial state and cutting completion state respectively, when cutting wire (200) is initial state, cutting wire (200) and shielding assembly (400) are hidden in the inner wall of first side (100a) of hollow main part (100), when cutting wire (200) is cutting completion state, cutting wire (200) is hidden in the inner wall of second side (100b) of hollow main part (100), shielding assembly (400) shields cutting end (102) of hollow main part (100).

2. A tissue sample cutting and retrieving device according to claim 1, wherein The shape of hollow main part (100) in cutting direction is square or circular, the radial outside of hollow main part (100) gradually reduces in the mode of being close to cutting end (102) to form cutting edge (1021).

3. A tissue sample cutting and retrieving device according to claim 1, wherein Guide assembly (300) is hidden in the inner wall of hollow main part (100), The first side (100a) of hollow main part (100) is provided with recess for accommodating cutting wire (200) and shielding assembly (400), and the second side (100b) of hollow main part (100) is provided with recess for accommodating cutting wire (200).

4. A tissue sample cutting and retrieving device according to claim 1, wherein The guide assembly (300) comprises a lower slide (301), a lower sliding block (302), a connecting rod (303), an upper sliding block (305) and an upper slide (304), the inner wall of the hollow body (100) is provided with a lower slide (301) on both sides perpendicular to the cutting direction, the lower slide (301) is arranged along the cutting direction, the lower slide (301) is movably connected with a lower sliding block (302), the cutting wire (200) is connected between the lower sliding blocks (302), the lower sliding blocks (302) are connected with a connecting rod (303) extending towards one side of the exposed end (101), the connecting rod (303) is connected with an upper sliding block (305), the side of the hollow body (100) close to the exposed end (101) is provided with an upper slide (304), the upper slide (304) and the lower slide (301) are parallel to each other, the upper slide (304) movably connects the upper sliding block (305), the end of the connecting rod (303) is located outside the hollow body (100), and the end of the connecting rod (303) is connected through a handle (306).

5. A tissue sample cutting and retrieving device according to claim 4, wherein The lower sliding block (302) is provided with a perforation (3021) in a manner perpendicular to the cutting direction, and the end of the cutting wire (200) is arranged in the inner side of the perforation (3021), and the cutting wire (200) and the lower sliding block (302) are connected through a ratchet structure (3022).

6. A tissue sample cutting and retrieving device according to claim 1, wherein The shielding assembly (400) comprises a winding rod (401) and a shielding piece (402), the winding rod (401) and the cutting wire (200) are parallel to each other, the winding rod (401) and the hollow body (100) are connected through a rotary pair, and a coiled spring is arranged between the winding rod (401) and the hollow body (100), in the cutting direction, one end of the shielding piece (402) is connected with the winding rod (401), the other end of the shielding piece (402) is connected with the cutting wire (200), and the shielding piece (402) is arranged to be wound on the outer side of the winding rod (401).

7. A tissue sample cutting and retrieving device according to claim 1, wherein The exposed end (101) is connected with a pushing-out assembly (500), and the pushing-out assembly (500) is arranged to be movable along the length direction of the hollow body (100) to push the target tissue in the hollow body (100) out through the cutting end (102).

8. A tissue sample cutting and retrieving device according to claim 7, wherein The pushing-out assembly (500) and the exposed end (101) are detachably connected.

9. A tissue sample cutting and retrieving device according to claim 8, wherein The push-out assembly (500) comprises a cover (501), a push rod (502) and a push piece (503), the cover (501) is connected with the exposed end (101) through screw thread, the push rod (502) is movably connected with the cover (501) along the length direction of the hollow main body (100), the first end of the push rod (502) is exposed outside the cover (501), the second end of the push rod (502) is located inside the cover (501), and the push piece (503) is arranged at the second end of the push rod (502), and the outer periphery of the push piece (503) is close to the inner wall of the hollow main body (100).

10. A tissue sample cutting and retrieving device according to claim 1, wherein A transparent window (103) is arranged on the hollow main body (100), and a scale (104) arranged along the length direction of the hollow main body (100) is arranged on the transparent window (103).

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