CN219661771U - Self-suction biopsy needle - Google Patents
Self-suction biopsy needle Download PDFInfo
- Publication number
- CN219661771U CN219661771U CN202320184598.9U CN202320184598U CN219661771U CN 219661771 U CN219661771 U CN 219661771U CN 202320184598 U CN202320184598 U CN 202320184598U CN 219661771 U CN219661771 U CN 219661771U
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- cavity
- needle
- handle
- self
- biopsy needle
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- 238000001574 biopsy Methods 0.000 title claims abstract description 42
- 238000005070 sampling Methods 0.000 claims abstract description 67
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 238000009434 installation Methods 0.000 claims description 25
- 238000004891 communication Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000008280 blood Substances 0.000 abstract description 5
- 210000004369 blood Anatomy 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 210000001519 tissue Anatomy 0.000 description 33
- 238000000034 method Methods 0.000 description 5
- 206010028980 Neoplasm Diseases 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 210000001672 ovary Anatomy 0.000 description 1
- 210000000496 pancreas Anatomy 0.000 description 1
- 238000010827 pathological analysis Methods 0.000 description 1
- 210000002307 prostate Anatomy 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 210000001550 testis Anatomy 0.000 description 1
- 210000001685 thyroid gland Anatomy 0.000 description 1
- 210000004291 uterus Anatomy 0.000 description 1
Abstract
The utility model relates to a self-priming biopsy needle, which relates to the technical field of medical appliances, and comprises a handle, wherein a mounting hole and a mounting cavity are formed in the handle, and the mounting hole is communicated with the mounting cavity; the outer needle is fixedly arranged in the mounting hole of the handle, and a sampling cavity is formed in the outer needle; an inner needle which is matched with the sampling cavity in a penetrating way; the unidirectional sealing piece comprises a sealing ring and a sealing cover, wherein part of the sealing cover is flexibly connected with the sealing ring. The utility model utilizes the plugging effect of the unidirectional sealing element, realizes the collection of living tissues by utilizing the intermittent negative pressure effect, improves the collection quantity of the living tissues, reduces the risk of blood entering the sampling cavity, and improves the problem that the biopsy needle collects fewer living samples.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a self-priming biopsy needle.
Background
The biopsy needle is a medical instrument for sampling and sucking cells from living tissues of cone tumors, unknown tumors and the like of various organs such as kidneys, livers, lungs, breasts, thyroid glands, prostates, pancreas, testes, uterus, ovaries, body surfaces and the like. The biopsy needle penetrates the tissue of the living body, and a small amount of the tissue of the living body is taken out for pathological analysis.
The biopsy needle in the related art includes an outer needle and a negative pressure syringe for evacuating the outer needle, and the outer needle is hermetically installed at an end of the negative pressure syringe. When the biopsy needle is used for sampling the living tissue, the biopsy needle is punctured to the focus position, then the negative pressure injector is driven to enable the cavity of the outer needle to form negative pressure, a small amount of living tissue enters the cavity of the outer needle under the action of the negative pressure, the outer needle is taken out, then the inner needle is inserted into the cavity of the outer needle, and the collected living tissue sample is pushed out.
The existing biopsy needle adopts the negative pressure suction of the injector to acquire tissue cells, and the continuous negative pressure suction usually brings out a large amount of blood, so that more blood is acquired, but fewer effective tissue cells are mixed in the biopsy needle, even the condition that the tissue cells cannot be found in the blood exists, so that a clinical laboratory doctor cannot give a test result, and the problem that the biopsy needle acquires fewer living samples exists.
Disclosure of Invention
In order to solve the problem that the biopsy needle collects fewer living samples, the utility model provides a self-priming biopsy needle.
The utility model provides a self-priming biopsy needle which adopts the following technical scheme:
the self-priming biopsy needle comprises a handle, wherein a mounting hole and a mounting cavity are formed in the handle, and the mounting hole is communicated with the mounting cavity; the outer needle is fixedly arranged in the mounting hole of the handle, a sampling cavity is formed in the outer needle, and the sampling cavity is communicated with the mounting cavity; an inner needle which is matched with the sampling cavity in a penetrating way; the unidirectional sealing piece comprises a sealing ring and a sealing cover, wherein part of the sealing ring is flexibly connected with the sealing cover, the sealing ring is fixedly installed at the bottom of the installation cavity, which is close to the installation hole, and in an initial state, the sealing cover is covered at the communication port of the installation cavity and the sampling cavity.
By adopting the technical scheme, the one-way sealing piece is arranged at the end part of the sealing cover, when the biopsy needle is used, the handle is used for controlling the outer needle to feed to the sampling position, living tissues enter the sampling cavity and squeeze gas in the sampling cavity, the air pressure in the sampling cavity is increased, so that the one-way sealing piece is opened, and part of gas enters the mounting cavity and is discharged at the other end of the mounting cavity; the inner needle is controlled to be pulled away from the direction away from the sampling position through the handle, the living body sample in the sampling cavity has the risk of being separated from the sampling cavity under the traction action of living body tissues, at the moment, the one-way sealing piece is blocked at the communicating port of the mounting cavity and the sampling cavity under the elastic action of the one-way sealing piece, so that negative pressure is formed in the sampling cavity, the risk of the living body tissues being separated from the sampling cavity is reduced, the actions are repeated to feed and pull away the biopsy needle for a plurality of times, the living body tissues are collected for a plurality of times, the collection amount of the living body tissues is improved, and the problem that the living body sample collected by the biopsy needle is less is solved.
Optionally, the handle includes the handle body and demountable installation is in end cover on the handle body, set up the guiding hole on the end cover, the guiding hole with the installation cavity is linked together, the interior needle with the guiding hole cooperation that slides, mounting hole and installation cavity are all seted up on the handle body.
By adopting the technical scheme, the end cover is fixedly arranged at the end part of the handle, and the end cover seals the mounting cavity, so that the risk that excessive gas enters the sampling position along the mounting cavity and the sampling cavity in the sampling process is reduced; the guide hole on the end cover guides the inner needle, so that the stability of the operation of the inner needle is improved, and the risk of shaking in the installation cavity in the use process of the inner needle is reduced.
Optionally, a guiding conical surface is provided at the end of the guiding hole away from the outer needle, which facilitates the insertion of the inner needle into the guiding hole.
Through adopting above-mentioned technical scheme, through set up the guide cone at the tip of guiding hole, the guide cone is convenient for insert the guide hole with interior needle in, improves the convenience that interior needle will gather the sample release.
Optionally, a conical portion is fixedly installed on the end cover, the conical portion is in plug-in fit with the installation cavity, and the guide Kong Kaishe is arranged on the conical portion.
By adopting the technical scheme, the conical part is inserted and installed in the installation cavity, so that the end cover is fixedly installed on the handle body.
Optionally, a limiting block is fixedly installed on the end cover, a limiting groove is formed in the handle body, and the limiting groove is matched with the limiting block in a clamping mode.
Through adopting above-mentioned technical scheme, when end cover fixed mounting on the handle body, stopper and spacing groove joint cooperation have restricted the relative rotation of end cover and handle body, and the gripping of the handle of being convenient for uses, improves the convenience that the biopsy needle used.
Optionally, a limiting part is fixedly installed on the outer wall of the handle body near the two ends, and one of the limiting parts is in butt fit with the end cover.
Through adopting above-mentioned technical scheme, the external diameter at spacing portion increase handle both ends is convenient for the grasp of handle, reduces the biopsy needle simultaneously at the operation in-process, and the risk that the handle takes place the slippage.
Optionally, anti-skidding grooves are formed in the outer wall of the handle body, and the number of the anti-skidding grooves is multiple.
Through adopting above-mentioned technical scheme, the friction of anti-skidding groove increase handle body outer wall improves operating personnel's stability to the handle grasp, improves the convenience to biopsy needle operation.
Optionally, a limiting ring is fixedly installed in the installation cavity, the limiting ring abuts against the end face of the sealing ring, and the limiting ring is in threaded fit with the cavity wall of the installation cavity.
Through adopting above-mentioned technical scheme, through setting up the spacing ring at the installation intracavity, the spacing ring compresses tightly the sealing ring and fixes at the chamber end of installation chamber, realizes the fixed mounting of one-way sealing member at the chamber end of installation chamber, improves the stability of one-way sealing member at installation intracavity fixed mounting, improves the shutoff effect of one-way sealing member to installation chamber and sampling chamber.
Optionally, the end of the outer needle, which is far away from the handle, is provided with a needle tip.
By adopting the technical scheme, the needle tip is convenient for cutting and puncturing the living body sampling tissue, and the sampling efficiency of the biopsy on the sampling tissue is improved.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. the end part of the sealing cover is provided with the one-way sealing element, when the biopsy needle is used, the handle controls the outer needle to feed to the sampling position, living tissues enter the sampling cavity and squeeze gas in the sampling cavity, the air pressure in the sampling cavity is increased, so that the one-way sealing element is opened, and part of gas enters the mounting cavity and is discharged at the other end of the mounting cavity; the inner needle is controlled to be pulled away from the direction away from the sampling position through the handle, the living body sample in the sampling cavity has the risk of being separated from the sampling cavity under the traction action of living body tissues, at the moment, the one-way sealing piece is blocked at the communicating port of the mounting cavity and the sampling cavity under the elastic action of the one-way sealing piece, so that negative pressure is formed in the sampling cavity, the risk of the living body tissues being separated from the sampling cavity is reduced, the actions are repeated to feed and pull away the biopsy needle for a plurality of times, the living body tissues are collected for a plurality of times, the collection amount of the living body tissues is improved, and the problem that the living body sample collected by the biopsy needle is less is solved.
Drawings
Fig. 1 is a schematic overall structure of an embodiment of the present utility model.
Fig. 2 is a schematic structural view showing a handle according to an embodiment of the present utility model.
Fig. 3 is a schematic cross-sectional view showing a one-way seal according to an embodiment of the present utility model.
Reference numerals illustrate: 1. a handle; 11. a handle body; 12. an end cap; 2. a mounting hole; 3. a mounting cavity; 4. an outer needle; 5. a sampling cavity; 6. a one-way seal; 61. a seal ring; 62. sealing cover; 7. a guide hole; 8. a guiding conical surface; 9. a tapered portion; 10. a limiting block; 13. a limit groove; 14. a limit part; 15. an anti-skid groove; 16. a limiting ring; 17. a needle tip; 18. an inner needle.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-3.
The embodiment of the utility model discloses a self-priming biopsy needle.
Referring to fig. 1 and 2, a self-priming biopsy needle comprises a handle 1, an outer needle 4 inserted and mounted at the end of the handle 1, an inner needle 18 in penetrating fit with the outer needle 4, and a unidirectional seal 6.
Referring to fig. 2 and 3, the handle 1 comprises a handle body 11 and an end cover 12 which is inserted and installed on the handle body 11, a mounting hole 2 and a mounting cavity 3 are formed in the handle body 11, the mounting hole 2 and the mounting cavity 3 are communicated, the mounting hole 2 and the mounting cavity 3 axially penetrate through the handle body 11, and the section diameter of the mounting cavity 3 is larger than that of the mounting hole 2.
The handle body 11 is integrally four-edged, the position of the outer peripheral wall of the handle body 11, which is close to the two ends of the axis direction of the handle body, is integrally formed with a limiting part 14, and the limiting part 14, which is close to one end of the end cover 12, is provided with a limiting groove 13. The outer peripheral wall of the handle body 11 is provided with 10 anti-slip grooves 15 at the position between the two limiting parts 14, the number of the anti-slip grooves 15 in the embodiment of the utility model is 10, the anti-slip grooves 15 are arranged on the two oppositely arranged edges of the handle body 11, and one side is 5 along the axial direction of the handle body 11. The setting of spacing portion 14 makes the thick diabolo shape in handle 1 whole journey middle thin both ends, is convenient for handle 1's grasp, reduces the risk that handle 1 takes place the slippage axially in the use. The anti-skid grooves 15 increase the friction force of the outer wall of the handle body 11, and improve the stability of the grasping of the handle 1 by an operator.
The end cover 12 is integrally formed with a tapered portion 9, and the tapered portion 9 is provided with a cross-sectional diameter which is sequentially increased in a direction approaching the end cover 12. The taper part 9 is provided with a guide hole 7 penetrating through the end cover 12, and the axis of the guide hole 7 is coaxial with the axis of the taper part 9. The hole wall at the end part of the guide hole 7 is provided with a guide conical surface 8 in an outward expanding way, and the guide conical surface 8 is convenient for inserting an inner needle 18 into the guide hole 7.
The tip integrated into one piece of end cover 12 has stopper 10, establishes the end cover 12 lid on handle body 11, and the awl lid grafting is installed in installation cavity 3, and guiding hole 7 is linked together with installation cavity 3 this moment, and the tip of end cover 12 supports tightly on the spacing portion 14 of seting up spacing groove 13 simultaneously, and stopper 10 joint is installed in spacing groove 13. The limiting block 10 is matched with the limiting groove 13 in a clamping manner, when the end cover 12 is limited to be installed on the handle body 11, the end cover 12 and the handle body 11 rotate relatively, the handle 1 can be conveniently gripped, and the stability of the end cover 12 in fixed installation on the handle body 11 is improved.
The cavity bottom of the installation cavity 3 is fixedly provided with a one-way sealing piece 6 through bonding of an adhesive, the one-way sealing piece 6 comprises a sealing ring 61 and a sealing cover 62, the sealing cover 62 and the sealing ring 61 are made of silica gel, and the sealing cover 62 and the sealing ring 61 are integrally formed, and part of the peripheral wall of the sealing cover 62 is connected with the sealing ring 61, so that the sealing cover 62 can rotate along the joint of the sealing cover and the sealing ring 61. Opening and closing of the unidirectional sealing element 6 are realized. The unidirectional sealing member 6 is under the elastic action of the unidirectional sealing member, so that the sealing cover 62 covers the communication port between the mounting hole 2 and the mounting cavity 3.
The limiting ring 16 is arranged in the mounting cavity 3, the limiting ring 16 is a plastic circular ring, the specification and the size of the limiting ring are the same as those of the sealing ring 61, the peripheral wall of the limiting ring 16 is in threaded fit with the cavity wall of the mounting cavity 3, the limiting ring 16 abuts against the end face of the sealing ring 61, which is far away from the cavity bottom of the mounting cavity 3, the fixed mounting of the sealing ring 61 at the cavity bottom of the mounting cavity 3 is realized, and the stability of the fixed mounting of the sealing ring 61 at the cavity bottom of the mounting cavity 3 is further improved.
The outer needle 4 is a long straight tube, one end of the outer needle 4 is inserted and installed in the installation hole 2, the sampling cavity 5 is coaxially formed in the outer needle 4, the sampling cavity 5 is communicated with the installation cavity 3, the end part of the outer needle 4, which is far away from the handle body 11, is integrally formed with the needle tip 17, and the needle tip 17 is convenient for cutting and puncturing living body sampling tissues, so that the sampling efficiency of biopsy on the sampling tissues is improved.
When the biopsy needle is used for sampling living tissues, a sampler grasps the handle 1, controls the outer needle 4 to puncture to a sampling position through the handle 1, controls the outer needle 4 to reciprocate along the direction far away from the sampling position and close to the sampling position through the handle 1, realizes multiple sampling of the sampling position, and the living tissues enter the sampling cavity 5, then takes out the outer needle 4, inserts the inner needle 18 into the guide hole 7 along the guide conical surface 8, and sequentially passes through the mounting cavity 3 and the puncture conical cover to slide and penetrate into the sampling cavity 5, so that the living tissues collected in the sampling cavity 5 are guided out, and the living tissues are collected.
The implementation principle of the self-priming biopsy needle provided by the embodiment of the utility model is as follows: by arranging the one-way sealing piece 6 at the communication port of the mounting cavity 3 and the sampling cavity 5, in the process of feeding the outer needle 4 into the living tissue, the living tissue enters the sampling cavity 5, gas in the sampling cavity 5 is extruded, and the air pressure in the sampling cavity 5 is increased, so that the one-way sealing piece 6 is opened, and part of the gas in the sampling cavity 5 enters the mounting cavity 3 and is discharged along the other end of the sampling cavity 5; in the process of withdrawing the outer needle 4, a living body sample in the sampling cavity 5 can be separated from the sampling cavity 5 under the traction action of living body tissues, at the moment, the one-way sealing piece 6 is plugged at the communication port of the mounting cavity 3 and the sampling cavity 5 under the elastic action of the one-way sealing piece, so that negative pressure is formed in the sampling cavity 5, the risk that the living body tissues are separated from the sampling cavity 5 is reduced, the collection of the living body tissues is realized by utilizing the intermittent negative pressure action through the plugging action of the one-way sealing piece 6, the collection amount of the living body tissues is improved, the risk that blood enters the sampling cavity is reduced, and the problem that the living body samples are collected by the biopsy needle is less is solved.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (9)
1. A self-priming biopsy needle, characterized in that: comprising the steps of (a) a step of,
the handle (1) is provided with a mounting hole (2) and a mounting cavity (3), and the mounting hole (2) is communicated with the mounting cavity (3);
the outer needle (4) is fixedly arranged in the mounting hole (2) of the handle (1), a sampling cavity (5) is formed in the outer needle, and the sampling cavity (5) is communicated with the mounting cavity (3);
an inner needle (18) which is in penetrating fit with the sampling cavity (5);
the unidirectional sealing piece (6) comprises a sealing ring (61) and a sealing cover (62) with part of the peripheral wall flexibly connected with the sealing ring (61), wherein the sealing ring (61) is fixedly installed at the bottom of a cavity of the installation cavity (3) close to the installation hole (2), and in an initial state, the sealing cover (62) is covered at a communication port of the installation cavity (3) and the sampling cavity (5).
2. The self-priming biopsy needle of claim 1, wherein: the handle (1) comprises a handle body (11) and an end cover (12) detachably mounted on the handle body (11), a guide hole (7) is formed in the end cover (12), the guide hole (7) is communicated with the mounting cavity (3), the inner needle (18) is in sliding fit with the guide hole (7), and the mounting hole (2) and the mounting cavity (3) are formed in the handle body (11).
3. A self-priming biopsy needle according to claim 2, wherein: the end part of the guide hole (7) far away from the outer needle (4) is provided with a guide conical surface (8) which is convenient for the inner needle (18) to be inserted into the guide hole (7).
4. A self-priming biopsy needle according to claim 2, wherein: the end cover (12) is fixedly provided with a conical part (9), the conical part (9) is in plug-in fit with the mounting cavity (3), and the guide hole (7) is formed in the conical part (9).
5. A self-priming biopsy needle according to claim 2, wherein: the end cover (12) is fixedly provided with a limiting block (10), the handle body (11) is provided with a limiting groove (13), and the limiting groove (13) is matched with the limiting block (10) in a clamping mode.
6. A self-priming biopsy needle according to claim 5, wherein: the handle is characterized in that limiting parts (14) are fixedly arranged on the outer wall of the handle body (11) close to the two ends, one of the limiting parts (14) is in butt fit with the end cover (12), and the limiting groove (13) is formed in the limiting part (14).
7. A self-priming biopsy needle according to claim 2, wherein: anti-skid grooves (15) are formed in the outer wall of the handle body (11), and the number of the anti-skid grooves (15) is multiple.
8. The self-priming biopsy needle of claim 1, wherein: a limiting ring (16) is fixedly arranged in the mounting cavity (3), the limiting ring (16) abuts against the end face of the sealing ring (61), and the limiting ring (16) is in threaded fit with the cavity wall of the mounting cavity (3).
9. The self-priming biopsy needle of claim 1, wherein: the end of the outer needle (4) far away from the handle (1) is provided with a needle tip (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320184598.9U CN219661771U (en) | 2023-02-09 | 2023-02-09 | Self-suction biopsy needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320184598.9U CN219661771U (en) | 2023-02-09 | 2023-02-09 | Self-suction biopsy needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219661771U true CN219661771U (en) | 2023-09-12 |
Family
ID=87895519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320184598.9U Active CN219661771U (en) | 2023-02-09 | 2023-02-09 | Self-suction biopsy needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219661771U (en) |
-
2023
- 2023-02-09 CN CN202320184598.9U patent/CN219661771U/en active Active
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