CN220360429U - Puncture sampling device for clinical tumor - Google Patents

Abstract

The utility model provides a clinical tumor is with puncture sampling device, relates to clinical tumor technical field, includes puncture sampling structure and negative pressure structure, puncture sampling structure includes puncture pipe and is located the rotatory cutting member of puncture pipe inner chamber, the tip of puncture pipe with negative pressure structure is connected, be equipped with the sample hole that runs through the wall in the puncture pipe, rotatory cutting member corresponds with the sample hole; the puncture device is characterized in that a puncture part is arranged at one end of the puncture tube, the other end of the puncture tube is fixedly connected with a holding block, the holding block is connected with the cylinder body through a connecting pipe, the holding block is rotatably connected with the connecting pipe, an inner cavity of the puncture tube sequentially penetrates through the holding block and the connecting pipe to be communicated with the inside of the cylinder body, and the end part of the rotary cutting piece penetrates through the holding block to be connected with the connecting pipe. The utility model has high sampling efficiency and small sampling wound, and relieves the pain of patients; the stability and the security of sampling operation are high, simple operation.

Description

A puncture sampling device for clinical tumors

Technical field

The utility model belongs to the technical field of clinical tumors, and specifically relates to a puncture sampling device for clinical tumors.

Background technique

Malignant tumors refer to new organisms formed by the abnormal proliferation of local tissue cells in the body under the action of various tumorigenic factors. These new organisms are mostly in the form of space-occupying massive protrusions. Malignant tumor disease is a disease that seriously endangers human health and life. Early detection and early treatment play a key role in the recovery of tumors. Since tumors are diverse, tumor samples need to be collected for pathological diagnosis during diagnosis, and based on the characteristics of the tumor The pathological type determines the targeted treatment plan. Conventional tumor sampling devices include tumor forceps and puncture sampling devices. Tumor forceps can cut and separate the sampled tissue from the tumor tissue, but they are clumsy and can easily damage normal human tissue, destroying a large area and causing pain to the patient; puncture The sampling device generally uses a needle to pierce the sampled tissue, and then uses the syringe to generate negative pressure, so that the sampled tissue is adsorbed into the needle to achieve the sampling effect; the wound sampled by the puncture sampling device is small, less likely to be infected, and causes less pain to the patient. is widely used. However, the connection force between early-stage tumor tissues is relatively large, which can easily cause the tumor sample to fall off from the needle tube, resulting in a low sampling success rate or insufficient sampling volume; some puncture sampling devices with cutting functions have complex structures and cumbersome operations, which are not suitable for The operational requirements for sampling personnel are relatively high.

Utility model content

In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a puncture sampling device for clinical tumors, which has a high sampling success rate, a small sampling wound, reduces the patient's pain, and is simple to operate.

The purpose of this utility model is achieved by adopting the following technical solutions:

A puncture sampling device for clinical tumors, including a puncture sampling structure and a negative pressure structure. The puncture sampling structure includes a puncture tube and a rotating cutting member located in the inner cavity of the puncture tube. The end of the puncture tube is in contact with the negative pressure structure. Structural connection, the puncture tube is provided with a sampling hole that penetrates the wall, and the rotating cutting member corresponds to the sampling hole; one end of the puncture tube is provided with a puncture part, and the other end of the puncture tube is fixed to the holding block connection, the holding block is connected to the negative pressure structure through a connecting tube, and the holding block is rotationally connected to the connecting tube, and the inner cavity of the puncture tube passes through the holding block and the The connecting pipe communicates with the inside of the negative pressure structure, and the end of the rotating cutting member passes through the holding block and is connected to the connecting pipe.

Further, the negative pressure structure includes a cylinder, a piston and a driving assembly. The piston is located inside the cylinder. The driving assembly is used to drive the piston to move linearly. The driving assembly includes a threaded rod and a threaded frame. , the threaded frame is fixedly connected to the barrel, the threaded rod and the threaded frame are connected through a threaded fit, and the end of the threaded rod is connected to the piston.

Furthermore, the puncture part has a tapered structure.

Further, one end of the threaded rod passes through the threaded frame and is fixedly connected to the runner, and the other end of the threaded rod is connected to the piston.

Further, the threaded rod and the piston are connected through a connecting piece, the threaded rod is rotationally connected to the connecting piece, and the connecting piece is fixedly connected to the piston.

Further, the piston is made of elastic material.

Further, the cross section of the sampling hole is circular or oval.

Further, the rotary cutting piece includes a main body part and a cutting part, the rotary cutting piece has an arc-shaped structure, and the cross-sectional thickness of the rotary cutting piece gradually decreases along the direction from the main body part to the cutting part.

Further, the threaded frame includes a threaded block and a connecting rib, the threaded block is located on the axis of the cylinder, and the threaded block is fixedly connected to the cylinder through the connecting rib.

Compared with the existing technology, the beneficial effects of this utility model are:

The utility model provides a puncture sampling device for clinical tumors. It adsorbs the sampling tissue to the inner cavity of the puncture tube through a negative pressure structure, and quickly cuts and separates the sampling tissue through a rotating cutting piece. It is simple to operate, has high sampling efficiency, and can sample wounds. It is small and reduces the patient's pain; and the puncture tube remains stationary during the cutting and sampling process to avoid secondary injury to the patient.

Furthermore, the negative pressure structure utilizes the cooperation of the threaded rod and the threaded frame to drive the piston in the cylinder to move linearly, which effectively improves the stability and safety of the sampling operation and reduces the need for the operator to pull the syringe for a long time during sampling. The operation of the piston improves the convenience of operation.

Description of the drawings

Figure 1 is a schematic structural diagram of a puncture sampling device for clinical tumors according to the present invention;

Figure 2 is a cross-sectional view of the holding block in Figure 1 of a clinical tumor puncture sampling device of the present invention.

Figure 3 is a cross-sectional view of the puncture tube in Figure 1 of a clinical tumor puncture sampling device of the present invention.

Among them, 1. Cylinder; 2. Runner; 3. Threaded frame; 4. Threaded rod; 5. Connector; 6. Piston; 7. Holding block; 8. Puncture tube; 81. Sampling hole; 91. Connection Pipe; 92. Rotary cutting parts.

Detailed ways

Below, the present invention will be further described with reference to specific implementation modes. It should be noted that, on the premise of no conflict, the embodiments or technical features described below can be arbitrarily combined to form new embodiments.

Example 1

A puncture sampling device for clinical tumors, as shown in Figures 1-3, includes a puncture sampling structure and a negative pressure structure. The negative pressure structure includes a cylinder 1, a piston 6 and a driving assembly. The piston 6 is located in the cylinder. Inside the body 1, the driving assembly is used to drive the piston 6 to move linearly, so that the puncture sampling structure can absorb tumor samples through the negative pressure generated inside the barrel 1.

As shown in Figure 1, the driving assembly includes a threaded rod 4 and a threaded frame 3. The threaded frame 3 is fixedly connected to the barrel 1. Specifically, the threaded frame 3 includes a threaded block and a connecting rib. The threaded block is located on the axis of the barrel 1, and the threaded block is fixedly connected to the barrel 1 through the connecting ribs; the threaded rod 4 and the threaded block are connected through a threaded fit, and the threaded rod 4 One end of the threaded rod 4 is fixedly connected to the runner 2 through the threaded block, and the other end of the threaded rod 4 is connected to the piston 6 through the connecting piece 5. The threaded rod 4 is rotationally connected to the connecting piece 5. The connecting piece 5 is fixedly connected to the piston 6, and the piston 6 is made of elastic material, preferably medical grade rubber; thereby controlling the linear motion of the piston 6 by rotating the wheel 2, so that the cylinder 1 and the piston 6 The closed space between creates negative pressure.

As shown in Figures 1-3, the puncture sampling structure includes a puncture tube 8 and a rotating cutting member 92 located in the inner cavity of the puncture tube 8. The puncture tube 8 is provided with a sampling hole 81 that penetrates the wall. The cutting piece 92 corresponds to the sampling hole 81; one end of the puncture tube 8 is provided with a puncture part, and the other end of the puncture tube 8 is fixedly connected to the holding block 7, and the holding block 7 is connected to the holding block 7 through the connecting tube 91. The cylinder 1 is connected, and the holding block 7 and the connecting tube 91 are rotatably connected to each other. The inner cavity of the puncture tube 8 passes through the holding block 7 and the connecting tube 91 in sequence. The inside of the cylinder 1 is connected, and the end of the rotary cutting member 92 passes through the holding block 7 and is fixedly connected to the connecting pipe 91; further, the rotary cutting member 92 includes a main body and a cutting part. , the rotary cutting member 92 has an arc-shaped structure, fits the inner cavity of the puncture tube 8, and can rotate around the inner cavity of the puncture tube 8, and the cross-sectional thickness of the rotary cutting member 92 extends along the main body. The direction to the cutting part gradually decreases, and this structure makes the rotating cutting member 92 have sufficient sharpness and strength. Preferably, the puncture part has a tapered structure, which is beneficial to puncturing the sampling tissue and reducing the wound area. The cross section of the sampling hole 81 is preferably a circular or quasi-circular structure, which is similar to the shape of most tumor tissues. Conducive to the adsorption and cutting of tumor samples.

When the clinical tumor puncture sampling device of this embodiment needs to be used, the piston 6 is first brought into contact with the bottom of the cylinder 1 to discharge the gas in the cylinder 1, and then the puncture tube 8 is inserted into the required area along the direction of the puncture part. In the sampled tumor tissue, the rotating wheel 2 drives the threaded rod 4 to rotate. Through the cooperation between the threaded rod 4 and the threaded block, the threaded rod 4 drives the piston 6 to move in the direction away from the puncture tube 8, so that the space between the inside of the cylinder 1 and the piston 6 is The formed space forms a negative pressure, causing a certain pressure difference between the inner cavity of the puncture tube 8 and the outside, thereby sucking the tumor tissue in contact with the sampling hole 81 into the inner cavity of the puncture tube 8; move the holding block 7 Fix, and then rotate the cylinder 1. The cylinder 1 drives the rotating cutting part 92 to rotate synchronously through the connecting tube 91, so that the rotating cutting part 92 rotates circumferentially in the inner cavity of the puncture tube 8, thereby realizing the suction into the puncture tube. 8 to cut the tumor tissue in the inner cavity, and then withdraw the puncture tube 8 and take out the cut tumor tissue sample.

The utility model provides a puncture sampling device for clinical tumors, which has high sampling efficiency and small sampling wounds, thereby reducing the pain of patients; the stability and safety of the sampling operation are high, and it overcomes the long-term pull required by conventional puncture sampling devices during sampling. The problem of operating the rubber stopper of the syringe improves the convenience of operation and reduces the difficulty of operation.

The above-mentioned embodiments are only preferred embodiments of the present utility model and cannot be used to limit the scope of protection of the present utility model. Any non-substantive changes and substitutions made by those skilled in the art on the basis of the present utility model shall belong to the scope of protection claimed by this utility model.

Claims (9)

1. A puncture sampling device for clinical tumors, characterized in that it includes a puncture sampling structure and a negative pressure structure. The puncture sampling structure includes a puncture tube and a rotating cutting member located in the inner cavity of the puncture tube. The end of the puncture tube The puncture tube is connected to the negative pressure structure, the puncture tube is provided with a sampling hole that penetrates the wall, and the rotating cutting member corresponds to the sampling hole; one end of the puncture tube is provided with a puncture part, and the other end of the puncture tube is provided with a puncture part. One end is fixedly connected to the holding block. The holding block is connected to the negative pressure structure through a connecting tube. The holding block is rotatably connected to the connecting tube. The inner cavity of the puncture tube passes through the holding block in turn. The block and the connecting tube are in communication with the inside of the negative pressure structure, and the end of the rotating cutting piece passes through the holding block and is connected to the connecting tube. 2. A puncture sampling device for clinical tumors according to claim 1, characterized in that: the negative pressure structure includes a cylinder, a piston and a driving component, the piston is located inside the cylinder, and the driving component Used to drive the piston to move linearly, the driving assembly includes a threaded rod and a threaded frame, the threaded frame is fixedly connected to the barrel, the threaded rod and the threaded frame are connected through a threaded fit, and the end of the threaded rod connected to the piston. 3. A puncture sampling device for clinical tumors according to claim 1, characterized in that the puncture part has a tapered structure. 4. A puncture sampling device for clinical tumors according to claim 2, characterized in that: one end of the threaded rod passes through the threaded frame and is fixedly connected to the runner, and the other end of the threaded rod is connected to the runner. Piston connection. 5. A puncture sampling device for clinical tumors according to claim 4, characterized in that: the threaded rod and the piston are connected through a connecting piece, and the threaded rod is rotationally connected to the connecting piece, and the The connecting piece is fixedly connected to the piston. 6. A puncture sampling device for clinical tumors according to claim 5, wherein the piston is made of elastic material. 7. A puncture sampling device for clinical tumors according to claim 1, wherein the cross section of the sampling hole is circular or oval. 8. A puncture sampling device for clinical tumors according to claim 1 or 2, characterized in that: the rotating cutting member includes a main body part and a cutting part, the rotating cutting member has an arc-shaped structure, and the rotating cutting member has an arc-shaped structure. The cross-sectional thickness of the cutting piece gradually decreases along the direction from the main body part to the cutting part. 9. A puncture sampling device for clinical tumors according to claim 2, characterized in that: the threaded frame includes a threaded block and a connecting rib, the threaded block is located on the axis of the barrel, and the The threaded block is fixedly connected to the cylinder through the connecting rib.