CN114983485A

CN114983485A - Disposable biopsy needle

Info

Publication number: CN114983485A
Application number: CN202210746956.0A
Authority: CN
Inventors: 田海峰; 王晓彩; 关庆超; 朱波; 兰百龙
Original assignee: Heilongjiang Shenghua Medical Equipment Co ltd
Current assignee: Heilongjiang Shenghua Medical Equipment Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-09-02

Abstract

The invention discloses a disposable biopsy needle, which belongs to the technical field of medical equipment, and comprises a puncture needle, wherein the puncture needle comprises an outer needle base, one end of the outer needle base is provided with an outer needle tube, the outer side of the outer needle tube is sleeved with a sheath connected with the outer needle base, one end of the outer needle base, which is far away from the outer needle tube, is provided with an inner needle base, one end of the inner needle base, which is close to the outer needle tube, is connected with an inner needle tube arranged in the outer needle tube, one end of the outer needle base, which is far away from the outer needle tube, is connected with a liquid storage tube through a connector, the liquid storage tube comprises a test tube sealing plug, the outer side of the test tube is provided with a tube cover, the open end of the test tube is provided with a sealing plug, the connector is communicated with the interior of the test tube through a negative pressure, and the disposable biopsy needle has the functions of automatic extraction, repeated extraction prevention, accurate split charging and accurate split charging, Avoiding pollution and being safe and reliable.

Description

Disposable biopsy needle

Technical Field

The invention relates to the technical field of medical instruments, in particular to a disposable biopsy needle.

Background

Biopsy sampling and effusion extraction are currently common body fluid extraction methods, such as amniotic fluid of pregnant women, abdominal effusion, pleural effusion biopsy sampling inspection and extraction of abdominal effusion and pleural effusion. Biopsy sampling and accumulated liquid extraction are performed to establish an internal and external channel through a biopsy needle, an injector is generally used for extraction, and then the sample is taken to a test room and is subpackaged into different reagent bottles according to the use amount of test items for test and discharge.

In the actual operation in-process doctor often will extract the amniotic fluid, first pipe liquid when the hydrops is discharged, then extract the body fluid that needs the inspection many times repeatedly, and when taking unnecessary hydrops out, also need extract many times repeatedly because of the syringe is capacious, because pull out the syringe repeatedly, the doctor exerts oneself inhomogeneously, harm foetus and patient's internal organ very easily, the painful sense of patient is obvious, and the partial shipment in-process needs to pull out the amniotic fluid in the needle tubing or hydrops partial shipment to a plurality of test tubes of difference, cause the pollution easily, and the partial shipment volume is not accurate, it is too big to cause the testing result deviation, make the doctor cause the diagnostic error, from top to bottom, there is the not accurate shortcoming of syringe and partial shipment volume of pulling out repeatedly in current amniotic fluid or hydrops extraction process, be difficult to obtain popularization and application.

Therefore, there is a need to provide a single use biopsy needle that addresses the above-mentioned problems.

Disclosure of Invention

In view of the shortcomings of the prior art, it is an object of the present invention to provide a disposable biopsy needle to solve the above problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a disposable biopsy needle, includes the pjncture needle, the pjncture needle includes outer needle file, the one end of outer needle file is provided with outer needle tubing, outer needle tubing outside cover is equipped with the sheath that is connected with outer needle file, the one end that outer needle tubing was kept away from to outer needle file is equipped with interior needle file, the one end that interior needle file is close to outer needle tubing is connected with the interior needle tubing that sets up in outer needle tubing inside, the one end that outer needle tubing was kept away from to outer needle file is connected with liquid receiver through the connector, liquid receiver includes the test tube, the test tube outside is provided with the tube cap, the open end of test tube is provided with the sealing plug, the connector is linked together through sealing plug and test tube inside, be equipped with the negative pressure in the test tube.

As a further scheme of the invention, one end of the outer needle tube, which is far away from the outer needle base, is provided with an outer needle point, one end of the inner needle tube, which is far away from the inner needle base, is provided with an inner needle point, and the outer needle point and the inner needle point are respectively composed of a first slope alpha, a second slope beta and a third slope gamma.

As a further aspect of the present invention, the angle of the first slope α ranges from 8 to 10 °, the angle of the second slope β ranges from 15 to 17 °, and the angle of the third slope γ ranges from 28 to 30 °.

As a further scheme of the invention, one end of the outer needle base, which is far away from the outer needle tube, is provided with a self-locking slideway, and one end of the self-locking slideway, which is far away from the outer needle base, is provided with a connecting hole.

As a further scheme of the invention, the connector comprises a connecting seat, a locking joint matched with the self-locking slideway is arranged at one end of the connecting seat close to the outer needle seat, a connecting pipe is arranged at one end of the connecting seat far away from the locking joint, a bottle-penetrating needle seat is arranged at one end of the connecting pipe far away from the connecting seat, a bottle-penetrating needle is connected at one end of the bottle-penetrating needle seat far away from the connecting pipe, and a needle holder connected with the bottle-penetrating needle seat is arranged at the outer side of the bottle-penetrating needle.

As a further scheme of the invention, the locking joint comprises a connecting hole joint, an inner spiral thread which is in spiral fit with the self-locking slideway is arranged inside the connecting hole joint, and one end of the connecting hole joint, which is close to the outer needle seat, is matched with the connecting hole.

As a further scheme of the invention, the outer needle tube is a hollow tube provided with scales, the inner needle tube is a solid tube, and the inner needle seat is provided with a self-locking buckle.

As a further scheme of the invention, the fixator is arranged between the outer needle tube and the sheath in a sliding manner, the fixator is symmetrically arranged relative to the outer needle tube, one side, close to the fixator, of the fixator is respectively provided with a fixing groove and a fixing hook which are matched with each other, and the two fixators are connected through a connecting belt.

As a further aspect of the present invention, an end of the test tube away from the sealing plug is provided with a conical bottom.

In summary, compared with the prior art, the embodiment of the invention has the following beneficial effects:

1. the invention can enhance the strength of the puncture needle through the design of the inner needle, the outer needle and the needle tip bevel, ensure the smooth puncture, avoid the human tissue components from being infused into the outer needle tube during the puncture operation, reduce the wound surface, be beneficial to the wound healing and reduce the pain of the patient,

2. the puncture needle, the connector and the liquid storage tube are flexibly assembled and disassembled, so that amniotic fluid or effusion can be automatically extracted, repeated pulling of the puncture needle is avoided, the safety of a fetus and internal organs is guaranteed, and the safety performance is improved.

3. The method can accurately control the packaging amount in the packaging process of the amniotic fluid or the hydrops, improves the detection precision, has the technical effects of automatic extraction, accurate packaging, pollution avoidance, safety and reliability, and helps doctors to diagnose more accurately, and the amount can be accurate to within 5%.

To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the invention.

Fig. 2 is a schematic structural view of the puncture needle in the embodiment of the invention.

Fig. 3 is a schematic structural diagram of a connector in an embodiment of the invention.

FIG. 4 is a schematic view showing the structure of the liquid storage tube in the embodiment of the invention.

Fig. 5 is a schematic structural diagram of a fixer in the embodiment of the invention.

Fig. 6 is a schematic structural view of an outer needle tip in an embodiment of the invention.

FIG. 7 is a schematic view of the inner needle cannula of the present invention.

Fig. 8 is a schematic structural view of a locking joint in an embodiment of the invention.

Reference numerals: 1-puncture needle, 101-sheath, 102-outer needle point, 1021-needle point outer wall, 1022-needle point inner wall, 1023-first inclined plane, 1024-second inclined plane, 1025-third inclined plane, 103-outer needle tube, 104-scale, 105-fixer, 1051-fixing groove, 1052-fixing hook, 1053-connecting band, 106-outer needle seat, 107-self-locking slideway, 108-connecting hole, 109-inner needle point, 110-inner needle tube, 111-self-locking buckle, 112-inner needle seat, 2-connector, 201-locking connector, 2011-connecting hole connector, 2012-inner spiral thread, 202-connecting seat, 203-connecting tube, 204-friction rib, 205-bottle-puncture needle seat, 206-bottle-puncture needle, 207-needle sleeve, 208-needle holder, 3-liquid storage tube, 301-test tube, 302-sealing plug, 303-tube cover, 304-scale and 305-conical bottom.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Specific implementations of the present invention are described in detail below with reference to specific embodiments.

In one embodiment of the present invention, referring to fig. 1, fig. 2, fig. 4 and fig. 7, the disposable biopsy needle comprises a puncture needle 1, the puncture needle 1 comprises an outer needle base 106, one end of the outer needle base 106 is provided with an outer needle 103, the outer side of the outer needle 103 is sleeved with a sheath 101 connected with the outer needle base 106, one end of the outer needle base 106 far away from the outer needle 103 is provided with an inner needle base 112, one end of the inner needle base 112 near the outer needle 103 is connected with an inner needle 110 arranged inside the outer needle 103, one end of the outer needle base 106 far away from the outer needle 103 is connected with a liquid storage tube 3 through a connector 2, the liquid storage tube 3 comprises a test tube 301, the outer side of the test tube 301 is provided with a tube cover 303, the open end of the test tube 301 is provided with a sealing plug 302, the connector 2 is communicated with the inside of the test tube 301 through the sealing plug 302, a negative pressure is arranged in the test tube 301.

In this embodiment, the inner needle tube 110 is inserted into the outer needle tube 103, the inner needle tube 110 is a solid tube, the inner needle hub 112 is provided with the self-locking buckle 111, the matching connection between the outer needle hub 106 and the inner needle hub 112 can be realized through the self-locking buckle 111, the outer needle tube 103 is inserted into amniotic fluid or effusion in the skin, the strength of the puncture needle can be enhanced, the tissue components of the human body are prevented from being infused into the outer needle tube during the puncture operation, the wound surface can be reduced, the wound healing is facilitated, the pain of the patient is reduced, the inner needle tube 110 is pulled out, the matching connection between the outer needle tube 103 and the inner needle tube 110 is released, one end of the connector 2 is connected with the outer needle hub 106, the other end of the connector 2 is connected with the test tube 301, because of negative pressure in the test tube 301, the amniotic fluid or the effusion can flow into the test tube 301 through the outer needle tube 103 and the connector 2 under the push of pressure, accomplish the purpose of extraction, when amniotic fluid or hydrops reach suitable volume in test tube 301, remove connector 2 and test tube 301's connection, when needs continue to extract amniotic fluid or hydrops, be connected connector 2's one end and another test tube 301, can realize the partial shipment of amniotic fluid and hydrops, avoided pulling repeatedly of pjncture needle 1, the security has been improved, wherein, be provided with scale 304 on the test tube 301, through scale 304, the staff of being convenient for carries out accurate collection to amniotic fluid or hydrops, test tube 301 keeps away from the one end of sealing plug 302 and sets up to the toper end 305, through the toper end 305, be convenient for extract the tissue.

In one embodiment of the present invention, referring to fig. 1, 2, 6 and 7, an end of the outer needle tube 103 away from the outer needle hub 106 is provided with an outer needle point 102, an end of the inner needle tube 110 away from the inner needle hub 112 is provided with an inner needle point 109, and the outer needle point 102 and the inner needle point 109 are each formed by a first inclined surface α 1023, a second inclined surface β 1024 and a third inclined surface γ 1025.

In this embodiment, the outer needle tip 102 and the inner needle tip 109 formed by the first inclined plane α 1023, the second inclined plane β 1024 and the third inclined plane γ 1025 facilitate the puncture needle 1 to penetrate into the skin of the patient and contact with the amniotic fluid or the effusion, so as to realize the operation of extracting the amniotic fluid or the effusion, wherein the angle range of the first inclined plane α 1023 is 8-10 °, the angle range of the second inclined plane β 1024 is 15-17 °, the angle range of the third inclined plane γ 1025 is 28-30 °, one end of the outer needle base 106 far away from the outer needle tube 103 is provided with a self-locking slideway 107, one end of the self-locking slideway 107 far away from the outer needle base 106 is provided with a connecting hole 108, the outer needle tube 103 is a hollow tube provided with a scale 104, so that the worker can know the puncture depth through the scale 104, and facilitate the image observation of the needle tip entering the position inside the patient, and avoid the needle tip touching the fetus or other tissues, the connecting hole 108 is a taper hole, and the outer needlepoint 102 is provided with a needlepoint outer wall 1021 and a needlepoint inner wall 1022.

In an embodiment of the present invention, referring to fig. 1, 3 and 8, the connector 2 includes a connecting base 202, one end of the connecting base 202 close to the outer needle hub 106 is provided with a locking joint 201 adapted to the self-locking slide 107, one end of the connecting base 202 far from the locking joint 201 is provided with a connecting pipe 203, one end of the connecting pipe 203 far from the connecting base 202 is provided with a bottle-penetrating needle hub 205, one end of the bottle-penetrating needle hub 205 far from the connecting pipe 203 is connected with a bottle-penetrating needle 206, and the outer side of the bottle-penetrating needle 206 is provided with a needle holder 208 connected to the bottle-penetrating needle hub 205.

In this embodiment, the locking joint 201 includes a connecting hole joint 2011, the connecting hole joint 2011 is internally provided with an internal spiral thread 2012 spirally matched with the self-locking slideway 107, the end of the connecting hole connector 2011 near the outer needle hub 106 is matched with the connecting hole 108, when the puncture needle 1 is punctured into the skin of a patient, the bottle puncturing needle 206 is punctured into the test tube 301 through the sealing plug 302 by matching the connecting hole joint 2011 with the connecting hole 108, because negative pressure exists in the test tube 301, the amniotic fluid or the effusion can sequentially flow into the test tube 301 through the outer needle tube 103, the connecting seat 202, the connecting tube 203, the bottle-penetrating needle seat 205 and the bottle-penetrating needle 206, so as to realize the collection of the amniotic fluid or the effusion, wherein, one end of the bottle-penetrating needle seat 205 close to the connecting pipe 203 is provided with a friction rib 204, the outer side of the bottle penetrating needle 206 is provided with a needle sleeve 207, and the bottle penetrating needle 206 can be subjected to dust-proof treatment through the needle sleeve 207.

In one embodiment of the present invention, referring to fig. 1, 2 and 5, the fixator 105 is slidably disposed between the outer needle 103 and the sheath 101, the fixator 105 is symmetrically disposed about the outer needle 103, the mutually adjacent sides of the fixator 105 are respectively provided with a fixing groove 1051 and a fixing hook 1052, which are matched with each other, and the two fixators 105 are connected by a connecting band 1053.

In this embodiment, the retainers 105 at both sides can be stably coupled by the coupling between the holding groove 1051 and the holding hook 1052, and when it is shown in the image that the outer needle tip 102 has reached the sampling position, the retainers 105 are fixed to the outer skin of the patient to prevent the outer needle tip 102 from moving and damaging the fetus or organs, and the coupling between the holding groove 1051 and the holding hook 1052 is released to facilitate the movement of the retainers 105 on the outer needle tube 103.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a disposable biopsy needle, includes the pjncture needle, its characterized in that, the pjncture needle includes outer needle file, the one end of outer needle file is provided with outer needle tubing, outer needle tubing outside cover is equipped with the sheath that is connected with outer needle file, the one end that outer needle tubing was kept away from to outer needle file is equipped with interior needle file, the one end that interior needle file is close to outer needle tubing is connected with and sets up in the inside inner needle tubing of outer needle tubing, the one end that outer needle tubing was kept away from to outer needle file is connected with liquid storage tube through the connector, liquid storage tube includes the test tube, the test tube outside is provided with the tube cap, the open end of test tube is provided with the sealing plug, the connector is linked together through inside with the test tube, the intraductal negative pressure that is equipped with of test.

2. The biopsy needle of claim 1, wherein the outer needle cannula is provided with an outer needle tip at an end thereof remote from the outer needle hub, the inner needle cannula is provided with an inner needle tip at an end thereof remote from the inner needle hub, and the outer needle tip and the inner needle tip are each formed with a first slope α, a second slope β and a third slope γ.

3. The single use biopsy needle of claim 2, wherein the first slope a is in the range of 8-10 °, the second slope β is in the range of 15-17 °, and the third slope γ is in the range of 28-30 °.

4. The single use biopsy needle of claim 1, wherein the end of the outer needle hub distal from the outer needle cannula is provided with a self-locking slideway, and the end of the self-locking slideway distal from the outer needle hub is provided with a connecting hole.

5. The disposable biopsy needle of claim 4, wherein the connector comprises a connecting seat, a locking joint adapted to the self-locking slide way is arranged at one end of the connecting seat close to the outer needle seat, a connecting tube is arranged at one end of the connecting seat far away from the locking joint, a bottle-threading needle seat is arranged at one end of the connecting tube far away from the connecting seat, a bottle-threading needle is connected to one end of the bottle-threading needle seat far away from the connecting tube, and a needle holder connected to the bottle-threading needle seat is arranged outside the bottle-threading needle.

6. The single use biopsy needle of claim 5, wherein the locking connector comprises a connection hole connector, the connection hole connector is internally provided with an internal spiral thread which is in spiral fit with the self-locking slideway, and one end of the connection hole connector close to the outer needle base is matched with the connection hole.

7. The single use biopsy needle of claim 1, wherein the outer needle tube is a graduated hollow tube, the inner needle tube is a solid tube, and the inner needle hub is provided with a self-locking catch.

8. The biopsy needle for single use according to claim 1, wherein said outer needle tube and said sheath are slidably provided with retainers, said retainers are symmetrically arranged with respect to said outer needle tube, one side of said retainers close to each other is provided with a fixing groove and a fixing hook, respectively, which are adapted to each other, and said two retainers are connected with each other by a connecting band.

9. The single use biopsy needle of claim 1, wherein an end of the tube distal to the sealing plug is configured as a conical bottom.