Pathological tissue sampling device

Abstract

The utility model discloses a pathological tissue sampling device which comprises a hollow puncture tube and an external tube which are fixedly connected, a solid puncture head is movably installed inside the hollow puncture tube, an equipment bin is installed at the top end of the external tube through a connecting piece, an air pump is fixed inside the equipment bin through a support, and the air pump is connected with the external tube through a connecting piece. The input end of the air pump penetrates through the equipment bin through an air inlet pipe and extends out of the equipment bin. Through cooperation of the hollow puncture tube and the solid puncture head, cutting and sampling can be more accurate, pathological tissues can be cut more thoroughly in a manner of pulling up after rotation, adhesion and tearing phenomena cannot be caused, and meanwhile, the cut pathological tissues are stored in a sealed manner; by adopting an air pump exhausting mode, for taking out the pathological tissue stored inside after sampling, the pathological tissue is exhausted through the air pump exhausting mode, no extra tool is needed, and the sampling working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of tissue samplers, and in particular relates to a pathological tissue sampling device. Background Art

[0002] Pathological tissue examination plays a key role in medical diagnosis. It can provide detailed information about tissue and cell structure, helping doctors diagnose diseases, assess the nature and extent of lesions, and develop treatment plans.

[0003] Pathological tissue refers to biological tissue samples that have been processed by pathological examination, usually obtained from surgical resection, biopsy or autopsy. These tissue samples undergo a series of processing, including fixation, embedding, sectioning, staining and other steps, in order to be observed and analyzed under a microscope.

[0004] When performing a biopsy, a puncture sampler is needed to collect samples of pathological tissues, such as a biopsy needle, a microtome, a puncture needle and other tools, which need to have the functions of puncture, cutting and collection.

[0005] The Chinese patent with the authorization announcement number CN106388872A discloses a living tissue puncture sampling needle, including a hollow puncture tube, a cutter is set inside the hollow puncture tube; a sampling hole is opened on the tube wall at the front end of the hollow puncture tube; the cutter is a tubular cutter, and the front end of the cutter is sharpened; the cutter adopts a hollow cylindrical structure, and the tail is connected to a negative pressure generating device; the front end of the hollow puncture tube is a solid pointed structure. When the cutter is inserted, the sample trapped in the sampling hole is separated from the body, the wound area is small, and the cutting is simple; the tail of the cutter is connected to a negative pressure generating device, and the cutter can adsorb and extract the sample separated from the body; the end of the hollow puncture tube is a solid pointed structure, which can effectively prevent the sample from falling out of the needle body area.

[0006] The above technical solution has the following defects:

[0007] The way of retaining the pathological tissue after sampling is the same as the traditional structure. The cut pathological tissue is placed inside the main body. When it needs to be taken out later, it is taken out by knocking or using tweezers, which is more cumbersome. At the same time, when the tissue is cut and incomplete separation occurs, the use of negative pressure adsorption will cause tearing at the cut of the pathological tissue and increase the amount of bleeding. Utility Model Content

[0008] In view of the above defects, the utility model provides a pathological tissue sampling device, comprising a hollow puncture tube and an external tube that are fixedly connected, a solid puncture head being movably installed inside the hollow puncture tube, a device compartment being installed at the top end of the external tube via a connecting piece, an air pump being fixed inside the device compartment via a bracket, an input end of the air pump penetrating the device compartment via an air inlet pipe and extending to the outside thereof, an output end of the air pump penetrating the inner walls of the external tube and the hollow puncture tube in turn via a connected air outlet pipe and extending to the interior of the hollow puncture tube, and the solid puncture head is controlled at the device compartment via a linkage mechanism.

[0009] Furthermore, the output end of the hollow puncture tube is an inclined opening, the upper and lower ends of the solid puncture head are also inclined, and the diameter of the lower end of the solid puncture head is deformed outward along the outward end in the middle.

[0010] Through the above technical solution, the setting of the inclined surface will make puncture and cutting smoother, reducing the tearing of pathological tissue, and the outward expansion design can form a bottom sealing structure after the solid puncture head contacts the inner wall of the hollow puncture tube, which can facilitate secondary cutting of the adhesion of pathological tissue and can also seal and store the cut pathological tissue.

[0011] Furthermore, the linkage mechanism includes a control rod, a bending rod, a linkage rod I and a linkage rod II connected in sequence. The control rod passes through the equipment bin and is movably connected to the penetration point of the equipment bin through a bearing. The linkage rod I and the linkage rod II are respectively located on one side close to the inner wall of the external tube and the hollow puncture tube.

[0012] Through the above technical solution, the function of driving the solid puncture head to move by rotating or stretching the control rod is realized.

[0013] Furthermore, a C-shaped circular ring rotating groove is provided on the upper surface of the hollow puncture tube, and a matching slider is clamped inside the rotating groove, and a telescopic groove for the linkage rod I and the linkage rod II to pass through is provided in the middle of the slider.

[0014] Through the above technical solution, the rotation range of the linkage rod I and the linkage rod II is limited, so that they can realize the function of wall-adhering rotation, and the solid puncture head will not form a stirring movement, thereby realizing the function of precise cutting.

[0015] Furthermore, a scale is provided on the outer surface of the hollow puncture tube.

[0016] Through the above technical solution, it is convenient to observe the puncture depth.

[0017] Furthermore, a threaded layer is provided on the outer surface of the external tube, and a baffle is provided on the threaded sleeve at the threaded layer.

[0018] Through the above technical solution, when sampling from a living body, the position of the baffle can be adjusted to contact the living body, thereby achieving precise control of the puncture depth.

[0019] Furthermore, a handle is fixed to the equipment compartment.

[0020] The above technical solution facilitates the control during puncture work.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. It is more accurate to cut and sample after puncture. The pathological tissue can be cut more thoroughly by rotating and pulling up, without adhesion or tearing. At the same time, the cut pathological tissue can be stored in a sealed manner.

[0023] 2. When taking out the pathological tissue stored inside after sampling, the pathological tissue is discharged by means of an air pump, without the need for additional tools, thereby improving the efficiency of sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the utility model.

[0025] Figure 2 It is a cross-sectional view of the utility model in a disassembled state.

[0026] Figure 3 It is a schematic diagram of the rotating groove in the utility model.

[0027] In the figure: 1. hollow puncture tube; 2. solid puncture head; 3. external tube; 4. equipment compartment; 5. control rod; 6. bending rod; 71. linkage rod II; 72. linkage rod I; 8. air pump; 9. air outlet pipe; 10. connecting piece; 11. handle; 12. threaded layer; 13. baffle; 14. scale; 15. rotating groove; 16. outward end. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The drawings provide embodiments of the device. However, the device can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Example

[0031] like Figure 1-2 As shown, this embodiment provides a pathological tissue sampling device, including a hollow puncture tube 1 and an external tube 3 that are fixedly connected. A solid puncture head 2 is movably installed inside the hollow puncture tube 1. The output end of the hollow puncture tube 1 is an inclined opening, and the upper and lower ends of the solid puncture head 2 are also inclined (the inclined surface in the embodiment is described as a plane. Since it is a cylindrical shape, it is actually a conical surface consistent with a traditional needle, and will not bring tissue into it when piercing). The solid puncture head 2 is the same as the traditional puncture head, and the bottom end is used to puncture the skin. At the same time, the top of the solid puncture head 2 can be retracted into the interior of the hollow puncture tube 1, and the cut pathological tissue is driven during the retraction process so that it is stored in the interior of the hollow puncture tube 1; specifically, the diameter value of the lower end of the solid puncture head 2 is deformed outward along the outward end 16 in the middle, which can form a bottom sealed structure after the solid puncture head 2 contacts the inner wall of the hollow puncture tube 1, so that the adhesion of the pathological tissue can be cut again, and the cut pathological tissue can also be sealed and stored.

[0032] The top of the external tube 3 is installed with the equipment compartment 4 through the connector 10. It should be noted that the connector 10 can be fixed by magnetic attraction, threaded fixing, or plug-in fixing. The specific selection is based on the needs, and no further details are given here. The inside of the equipment compartment 4 is fixed with an air pump 8 through a bracket. It should be noted that a mobile power supply connected to it should also be installed for power supply. The input end of the air pump 8 passes through the equipment compartment 4 through the air inlet pipe and extends to the outside thereof. The output end of the air pump 8 passes through the inner wall of the external tube 3 and the hollow puncture tube 1 in turn through the connected air outlet pipe 9 and extends to the inside of the hollow puncture tube 1. A one-way valve is provided at the output end of the air outlet pipe 9 to play the function of one-way gas transmission to prevent the blood carried by the pathological tissue from flowing back. The air pump 8 can discharge the pathological tissue subsequently stored in the hollow puncture tube 1, making the sampling process more convenient. The solid puncture head 2 is controlled by a linkage mechanism at the equipment compartment 4.

[0033] The linkage mechanism includes a control rod 5, a bending rod 6, a linkage rod I72 and a linkage rod II71 connected in sequence. The control rod 5 passes through the equipment bin 4 and is movably connected to the penetration point of the equipment bin 4 through the bearing (because the control rod 5 needs to ensure rotation while also meeting the function of moving up and down, a cross groove and a cross edge that are connected to each other should be set between the inner ring of the bearing and the outer ring of the control rod 5, and the functions of linkage rotation and vertical up and down movement can be achieved through the limiting of the two). The linkage rod I72 and the linkage rod II71 are respectively located on one side close to the inner wall of the external tube 3 and the hollow puncture tube 1, so that there is no gap when the outer surface of the solid puncture head 2 contacts the inner ring of the hollow puncture tube 1, and the pathological tissue will not be clamped and pulled, while ensuring the sealing effect. Figure 3 As shown, a C-shaped circular ring rotating groove 15 is provided on the upper surface of the hollow puncture tube 1, and a matching slider is clamped inside the rotating groove 15, and a telescopic groove for the linkage rod I72 and the linkage rod II71 to pass through is provided in the middle of the slider, so as to limit the rotation range of the linkage rod I72 and the linkage rod II71, prevent the solid puncture head 2 from forming a stirring motion (i.e., non-circular regular motion), and realize the function of precise cutting.

[0034] Specifically, a scale 14 is provided on the outer surface of the hollow puncture tube 1 to facilitate observation of the puncture depth;

[0035] The outer surface of the external tube 3 is provided with a thread layer 12, and a baffle 13 is provided on the thread layer 12. When sampling a living body, the position of the baffle 13 can be adjusted to contact the living body, so as to achieve accurate control of the puncture depth;

[0036] The equipment compartment 4 is fixed with a handle 11 for convenient gripping and manipulation during puncture work.

[0037] The pathological tissue sampling device described in this embodiment, when performing pathological sampling, first adjust (rotate) the position of the baffle 13 according to the required puncture depth, then puncture the body skin through the solid puncture head 2, and the hollow puncture tube 1 follows the solid puncture head 2 to puncture synchronously. After reaching the pathological tissue position, the baffle 13 keeps stable contact with the body, and then (reciprocatingly) rotates the control rod 5 so that the control rod 5 drives the solid puncture head 2 to cut the pathological tissue through its top end through the bending rod 6, the linkage rod I72 and the linkage rod II71 in turn, and then continues to pull up synchronously during the rotation, so that the solid puncture head 2 moves to the inside of the hollow puncture tube 1, and the cut pathological tissue is pushed into the inside of the hollow puncture tube 1 for storage. After the sampling device is pulled out, push the control rod 5 down to separate the solid puncture head 2 from the hollow puncture tube 1, and then control the air pump 8 to output (exhaust) to discharge the internal pathological tissue for collection.

[0038] It should be noted that the structure described in the utility model can be implemented in a variety of different forms and is not limited to the described embodiments. Any equivalent transformations made by ordinary technicians in this field using the contents of the utility model specification and drawings, or directly or indirectly applied to other related technical fields, such as the loading and unloading of other items, are included in the protection scope of the utility model.

Claims

1. A pathological tissue sampling device, comprising a fixedly connected hollow puncture tube and an external tube, wherein a solid puncture head is movably installed inside the hollow puncture tube, characterized in that: An equipment bin is installed at the top end of the external tube through a connecting piece, an air pump is fixed inside the equipment bin through a bracket, the input end of the air pump passes through the equipment bin through an air inlet pipe and extends to the outside thereof, the output end of the air pump passes through the inner wall of the external tube and the hollow puncture tube in turn through the connected air outlet pipe and extends to the inside of the hollow puncture tube, and the solid puncture head is controlled by a linkage mechanism at the equipment bin.

2. A pathological tissue sampling device as claimed in claim 1, characterized in that: The output end of the hollow puncture tube is an inclined opening, the upper and lower ends of the solid puncture head are also inclined, and the diameter value of the lower end of the solid puncture head is deformed outward along the outward end of the middle part.

3. A pathological tissue sampling device as claimed in claim 1, characterized in that: The linkage mechanism includes a control rod, a bending rod, a linkage rod I and a linkage rod II which are connected in sequence. The control rod passes through the equipment bin and is movably connected to the penetration point of the equipment bin through a bearing. The linkage rod I and the linkage rod II are respectively located on one side close to the inner wall of the external tube and the hollow puncture tube.

4. A pathological tissue sampling device as claimed in claim 3, characterized in that: The upper surface of the hollow puncture tube is provided with a C-shaped circular ring rotating groove, and a matching slider is clamped inside the rotating groove, and a telescopic groove for the linkage rod I and the linkage rod II to pass through is provided in the middle of the slider.

5. A pathological tissue sampling device as claimed in claim 1, characterized in that: The outer surface of the hollow puncture tube is provided with a scale.

6. A pathological tissue sampling device as claimed in claim 1, characterized in that: The outer surface of the external tube is provided with a thread layer, and a baffle is provided on the thread sleeve at the thread layer.

7. A pathological tissue sampling device as claimed in claim 1, characterized in that: A handle is fixed on the equipment compartment.

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