CN114947989A - A kind of tissue puncture sampling needle and sampling device containing the same - Google Patents

Abstract

The invention discloses a tissue puncture sampling needle, which has a main body of a hollow tubular structure, wherein the main body is sequentially provided with a cutting area, a guide area and a connecting area from front to back along an axis; one side of the cutting area is a cylindrical surface, the other side of the cutting area is an inclined surface, the cylindrical surface and the inclined surface are intersected at the front end to form a needle point structure, and the outer edge of the needle point structure is provided with a front end cutting edge; the guide area is provided with an open slot in the whole length; the center line of the open slot is parallel to the axis of the main body, the center line of the open slot is intersected with the center line of the inclined plane of the cutting area at the rear end of the inclined plane, and a middle section cutting edge is arranged at the edge of the open slot; the outer circumference of the connecting area is of a polished rod structure. The tissue puncture sampling needle can be used for sampling living tissues of various organs such as kidney, liver, lung, mammary gland, thyroid gland, prostate, pancreas, testis, uterus, ovary, body surface and the like, not only increases the sampling amount of the tissues, but also can cut the tissues and extract the sampled tissues by operation and rotation, and provides reliable guarantee for subsequent detection and diagnosis.

Description

A kind of tissue puncture sampling needle and sampling device containing the same

technical field

The invention of the invention relates to the field of medical equipment, and is a tissue puncture sampling needle and a sampling device containing the same, which can be applied to all puncture biopsies.

Background technique

Because many clinical classification methods cannot make a clear diagnosis, there are many deficiencies in judging prognosis, etc., and the use of needle biopsy is beneficial to confirm the diagnosis and guide treatment, so needle biopsy is one of the important basis for clinical surgery. At present, the common clinical puncture needle sampling generally adopts the method of moving back and forth to sample the target tissue. The disadvantage of this kind of sampling is that the target tissue needs to be punctured repeatedly at the same position, which not only fails to obtain a complete biopsy tissue but also enlarges the puncture site. The risk of infection, because there is no special structure to limit the tissue after the puncture is completed, when the operation part is moved backward to extract the tissue, less effective tissue can be extracted, which brings limitations for subsequent diagnosis and treatment.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide a tissue puncture sampling needle and a sampling device containing the same. The tissue puncture sampling needle has a unique open groove structure, which greatly increases the sampling amount, and at the same time matches the cutting edge on the open groove. , Through the method of forward and backward feeding and rotation, the complete puncture tissue can be extracted as much as possible, and the sampling process is simplified.

In order to solve the above problems, the specific technical scheme of the present invention is as follows: a tissue puncture sampling needle, the main body is a hollow tubular structure, and the main body is sequentially provided with a cutting area, a guiding area and a connecting area along the axis from front to back; one side of the cutting area is The cylindrical surface and the inclined surface on the other side, the cylindrical surface and the inclined surface intersect at the front end to form a needle point structure, and the outer edge of the needle point structure is provided with a front end edge; the guide area is provided with an open groove on the entire length; the center line of the open groove is parallel to the main body The axis of the opening groove and the center line of the inclined plane of the cutting area intersect at the rear end of the inclined plane, and the edge of the open groove is provided with a middle cutting edge; the outer circumference of the connecting area is a polished rod structure.

There is a limit area between the guide area and the connection area, the limit area is provided with a window structure on the entire length, and the center line of the window structure coincides with the center line of the opening slot; when the width of the opening slot is A, the window structure The width B of the window is greater than A, and is connected with the rounded corner at the end face of the opening slot; the edge of the window structure is provided with a rear edge.

The outer circumferences of the cutting area and the guiding area are provided with a plurality of ultrasonic identification ring grooves at equal intervals, and the distance between two adjacent ultrasonic identification ring grooves is L1.

When the diameter of the guide area is r2, the inner diameter of the limiting area is r3, and r3 is smaller than r2.

A receiving area is arranged between the limiting area and the connecting area, and the receiving area is in the shape of a hollow tube as a whole.

The outer circumferences of the limiting area and the storage area are provided with a plurality of ultrasonic identification ring grooves at equal intervals, and the distance between two adjacent ultrasonic identification ring grooves is L2.

A set of guiding areas, limiting areas and receiving areas are further arranged between the storage area and the connection area.

Barbs are provided at the front end of the window structure of the restraint area shown.

The utility model relates to a sampling device containing a tissue puncture sampling needle, which is connected with a joint at the rear end of the connecting area, and is connected with a rotating wheel on the outer circumference of the joint.

The rear end of the joint is provided with a quick-change joint connected with external equipment.

In addition to the needle tip structure, the tissue puncture sampling needle of the present application also adopts a guide area with an open groove structure and a middle cutting edge, so that the sampling needle can be easily taken out after being rotated after being inserted into the tissue, which not only increases the number of biopsy samples Compared with the traditional puncture sampling method, there is no need to repeatedly puncture the punctured tissue at the same position, which reduces the frequency of operations, and also avoids the increase of infection caused by repeated puncture. risk.

Description of drawings

FIG. 1 is a schematic structural diagram of the first embodiment of the tissue puncture sampling needle.

FIG. 2 is a front view of the first embodiment of the tissue puncture sampling needle.

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2 .

FIG. 4 is a C-C cross-sectional view of FIG. 2 .

FIG. 5 is a D-D cross-sectional view of FIG. 2 .

FIG. 6 is a cross-sectional view taken along the line E-E of FIG. 2 .

FIG. 7 is a cross-sectional view taken along the line F-F of FIG. 2 .

Fig. 8 is a bottom view of the second embodiment of the tissue puncture sampling needle.

FIG. 9 is a perspective view of the third embodiment of the tissue puncture sampling needle.

Fig. 10 is an overall structural diagram of a tissue puncture sampling device.

11 is a partial cross-sectional view of a tissue puncture sampling device.

Figure 12 is a schematic diagram of an example of the structure of the biopsy tissue entering the incision area.

FIG. 13 is a schematic diagram of an example of the structure of the biopsy tissue entering the guide area.

FIG. 14 is a schematic diagram of a structural example of the biopsy tissue entering the limiting area.

FIG. 15 is a schematic diagram of an example of the structure of the biopsy tissue entering the receiving area.

FIG. 16 is a schematic diagram of a single sampling example of a tissue puncture sampling structure.

FIG. 17 is a schematic diagram of an example of multi-position or multi-time collection of the tissue puncture sampling structure.

Detailed ways

The tissue puncture sampling needle of the present application can be used for biopsy of various organs such as kidney, liver, lung, breast, thyroid, prostate, pancreas, testis, uterus, ovary, and body surface.

Example 1

As shown in Figures 1 to 7, a tissue puncture sampling needle, the main body 10 is a hollow tubular structure, the main body 10 is sequentially provided with a cutting area 1, a guiding area 2, a limiting area 3, a receiving area 4 and a Connection area 5; one side of the cutting area 1 is a cylindrical surface, and the other side is an inclined surface. The cylindrical surface and the inclined surface intersect at the front end to form a needle point structure. The outer edge of the needle point structure is provided with a front edge 1-1. into the sampled tissue, and the front-end cutting edge 1-1 can easily cut the tissue.

The guide area 2 is provided with an open groove 2-1 on the entire length, so that the radial cross section of the guide area 2 is C-shaped; the center line of the open groove 2-1 is parallel to the axis of the main body 10, and the center of the open groove 2-1 The line intersects the center line of the inclined plane of the cutting area 1 at the rear end of the inclined plane, and a middle cutting edge 2-2 is provided on the edge of the opening groove 2-1. The front-end cutting edge 1-1 of the needle tip structure cuts the tissue from one point to a curved line. When it enters the guide area 2, the section of the cutting tissue enters the guide area 2 in a C-shape. Due to the setting of the opening groove 2-1, the tissue is cut. The tension is released at the opening groove 2-1, reducing the compression of the tissue on the inner wall of the guide area 2, and making the tissue enter the guide area 2 from the cutting area 1 more smoothly.

The limit area 3 is provided with a window structure 3-1 on the entire length, the center line of the window structure 3-1 coincides with the center line of the opening groove 2-1, and communicates with the opening groove 2-1; when the opening groove 2-1 When the width of the window structure 3-1 is A, the width B of the window structure 3-1 is greater than A, and is connected with the fillet at the end face of the opening groove 2-1; the edge of the window structure 3-1 is provided with a rear edge 3-2; When the inner diameter of the guide area 2 is r2, the inner diameter of the limiting area 3 is r3, and r3 is smaller than r2. When the tissue enters the limit area 3 from the guide area 2, the size of the inner hole changes from large to small, which increases the tissue tension and releases the tension at the window structure 3-1 of the limit area 3, forming a tissue protrusion at the window structure 3-1. It can provide sufficient separation force for subsequent separation of tissue.

The limiting area 3 is connected to the connecting area 5 of the outer circumference polished rod structure through a hollow tubular receiving area 4 . After each tissue incision, it is not necessary to take it out immediately, and the previously incised tissue can be smoothly entered into the storage area 4 by repeating the operation again. , the tissue will enter the receiving area 4 one by one according to the puncturing sequence, and the integrity of the extracted tissue will be ensured as much as possible.

When the tissue puncture sampling needle is used in an ultrasonic environment, there are several ultrasonic identification ring grooves 6 at equal intervals on the outer circumferences of the cutting area 1 and the guide area 2, and the distance between two adjacent ultrasonic identification ring grooves 6 is L1; The outer circumferences of the limiting area 3 and the storage area 4 are provided with a plurality of ultrasonic identification ring grooves 6 at equal intervals, and the distance between two adjacent ultrasonic identification ring grooves 6 is L2. By setting different values of L1 and L2, the two ultrasonic identification ring grooves 6 can also be set as a helical and a parallel ring structure respectively as a distinction, so that the outer circumferential edge of the front end of the limit area 3 can be used as a dividing line. The specific location of the puncture can be clearly observed under the microscope, providing a real-time location basis for puncture sampling.

Embodiment 2

As shown in FIG. 8 , when the range of the extracted diseased tissue is very large, a set of guiding areas 2 , limiting areas 3 and receiving areas 4 are also provided between the receiving area 4 and the connecting area 5 of the tissue puncture sampling needle, so as to ensure that the tissue The inner hole of the main body 10 can be deeper, and the tension of the tissue can be relieved twice through the opening groove 2-1 of the second guide area 2 and the window structure 3-1 of the limit area 3. The two-way opening window can provide a larger The tension space is released to form a blocking phenomenon, thereby ensuring that the punctured tissue is extracted as much as possible. The rest of the structure is the same as that of the first embodiment.

Embodiment 3

As shown in FIG. 9 , barbs 3-3 are arranged at the front end of the window structure 3-1 in the limiting area 3, and the barbs 3-3 are symmetrically arranged on both sides of the window structure 3-1, and the tooth tips are rearward. When the puncture sampling needle is pulled out, the tips of the barbs 3-3 can provide resistance to the tissue to prevent the sampling tissue in the sampling needle from slipping out, resulting in sampling failure.

As shown in Figures 10 and 11, a tissue puncture sampling device is connected to a joint 7 at the rear end of the tissue puncture sampling needle connection area 5, and a rotating wheel 8 is connected to the outer circumference of the joint 7, and through the rotation of the rotating wheel 8, control The tissue puncture sampling needle is rotated; the rear end of the joint 7 is provided with a quick-change joint 7-1 connected with external equipment, so as to realize the versatility of the tissue puncture sampling device. As shown in FIG. 9 , the left end of the joint 7 is provided with a process positioning hole 7-3, so that the connection area 5 of the tissue puncture sampling needle and the joint 7 are firmly connected.

The steps of using the above-mentioned tissue puncture sampling device for puncture sampling are as follows:

1. The extracted tissue enters the cutting area: As shown in Figure 12, when the tissue puncture sampling device is ready for puncture biopsy, the needle tip structure and the front edge 1-1 can easily cut the sample tissue, and the cut tissue enters the central hole;

2. The extracted tissue enters the guide area: as shown in Figure 13, the open groove 2-1 of the guide area 2 can release part of the tension of the tissue, so that the tissue can enter more smoothly in this process;

3. The extracted tissue enters the limit area: As shown in Figure 14, the tissue puncture sampling part continues to move forward, the tissue enters the limit area 3 from the guide area 2, the aperture becomes smaller, and the tissue will pass through the window structure 3-1 for further Release the tension to form a raised tissue on the edge of the window structure 3-1, and the raised tissue has a certain effect of locking the sample for subsequent separation;

4. The extracted tissue enters the storage area: As shown in Figure 15, the tissue puncture sampling part moves forward again, enters the storage area 4, and the inner wall of the storage area 4 squeezes the tissue again to increase the tension around the tissue;

5. Tissue extraction by the rotating operation part: As shown in Figure 16, after the tissue enters the storage area 4, the rotating wheel 8 is rotated to drive the tissue puncture sampling needle at the front end to rotate synchronously, and the middle cutting edge of the limit area 2 is used. 2-2 and the rear cutting edge 3-2 of the limit area 3 perform rotary cutting on the uncut tissue located in the open groove 2-1 and the window structure 3-1, and combine the window structure 3- of the limit area 3 after the cutting is completed. 1 The front-end edge snapping effect further limits the extracted tissue. Then pull the connector 7 backwards to drive the tissue puncture sampling needle to move backwards, at this time the extracted tissue will be separated at the position of the needle tip and stored in the inner hole of the tissue puncture sampling needle body 10;

6. Multi-position or multiple times of puncture biopsy: As shown in FIG. 17 , because the storage area 4 has enough storage lumens, it is possible to carry out multi-position or multiple times of puncture biopsy on the target tissue. The action of each puncture biopsy is to first push the joint 7 forward, and then rotate the rotating wheel 8 to drive the cutting edges of the tissue puncture sampling needle to further rotate and cut the cut tissue to complete a single sampling. When performing multiple-position or multiple-time puncture biopsies, the above-mentioned actions only need to be repeated, and the extracted samples will be sequentially stored in the inner cavity of the storage area 4 .

Claims (10)

1. A tissue puncture sampling needle which is characterized in that: the main body (10) is of a hollow tubular structure, and the main body (10) is sequentially provided with a cutting area (1), a guide area (2) and a connecting area (5) from front to back along an axis; one side of the cutting area (1) is a cylindrical surface, the other side of the cutting area is an inclined surface, the cylindrical surface and the inclined surface are intersected at the front end to form a needle point structure, and a front end cutting edge (1-1) is arranged on the outer edge of the needle point structure; the guide area (2) is provided with an open slot (2-1) in the whole length; the central line of the open slot (2-1) is parallel to the axis of the main body (10), the central line of the open slot (2-1) is intersected with the central line of the inclined plane of the cutting area (1) at the rear end of the inclined plane, and the edge of the open slot (2-1) is provided with a middle section cutting edge (2-2); the outer circumference of the connecting area (5) is of a polished rod structure.

2. A tissue-piercing needle as recited in claim 1, wherein: a limiting area (3) is arranged between the guide area (2) and the connecting area (5), a window structure (3-1) is arranged on the limiting area (3) in the whole length, and the central line of the window structure (3-1) is superposed with the central line of the open slot (2-1); when the width of the open slot (2-1) is A, the width B of the window structure (3-1) is larger than A and is in transition connection with a fillet at the end face of the open slot (2-1); the edge of the window structure (3-1) is provided with a rear section cutting edge (3-2).

3. A tissue-piercing needle as recited in claim 2, wherein: the outer circumference of cutting region (1) and guide region (2) be equipped with a plurality of equidistant ultrasonic identification annular (6), the interval of two adjacent ultrasonic identification annular (6) is L1.

4. A tissue-piercing needle as recited in claim 2, wherein: when the inner diameter of the guide area (2) is r2, the inner diameter of the limiting area (3) is r3, and r3 is smaller than r 2.

5. A tissue-piercing needle according to claim 3 or 4, wherein: and a storage area (4) is arranged between the limiting area (3) and the connecting area (5), and the storage area (4) is integrally in a hollow tubular shape.

6. A tissue-piercing needle as recited in claim 5, in which: the outer circumference of spacing district (3) and storage area (4) is equipped with ultrasonic identification annular (6) of a plurality of equidistant, and the interval of two adjacent ultrasonic identification annular (6) is L2.

7. A tissue-piercing needle as recited in claim 5, in which: a group of guide area (2), a limit area (3) and a storage area (4) are further arranged between the storage area (4) and the connection area (5).

8. The tissue penetrating sampling needle sampling device of claim 2, wherein: the front end of the window structure (3-1) of the limiting area (3) is provided with a barb (3-3).

9. A sampling device comprising the tissue-piercing needle of claim 2, wherein: a joint (7) is connected to the rear end of the connecting area (5), and a rotating wheel (8) is connected to the outer circumference of the joint (7).

10. The sampling device of claim 8, wherein: the rear end of the joint (7) is provided with a quick-change joint (7-1) connected with external equipment.

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