CN107595324B - Full-automatic negative pressure suction rotary cut type biopsy needle - Google Patents
Full-automatic negative pressure suction rotary cut type biopsy needle Download PDFInfo
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- CN107595324B CN107595324B CN201710906575.3A CN201710906575A CN107595324B CN 107595324 B CN107595324 B CN 107595324B CN 201710906575 A CN201710906575 A CN 201710906575A CN 107595324 B CN107595324 B CN 107595324B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention relates to a full-automatic negative pressure suction rotary-cut biopsy needle, which comprises a piston, a sleeve, a needle core and a needle tube, wherein the piston is embedded in the sleeve, the needle core is fixedly connected to the front end of the piston, the needle tube is detachably connected to the front end of the sleeve, a cavity is formed in the needle tube, the needle core sequentially penetrates through the front end of the sleeve and the cavity of the needle tube, the piston is pushed to the forefront end of the sleeve, the needle core extends out of the needle tube, automatic retraction devices are arranged on the piston and the sleeve, the front end of the needle tube is provided with a rotary-cut device for cutting human tissues, a retention device for retaining the human tissues in the cavity is also arranged in the cavity of the needle tube, and an injection tube communicated with the cavity is arranged on the side wall of the sleeve. The beneficial effects of the invention are as follows: the rotary cutting device at the port of the needle tube is cut off by rotary cutting, the cylinder sample is taken by the in-tube retention device, the sampling amount is more sufficient under the same aperture, the inserting depth can be controlled, and the safety is ensured; simultaneously taking a tissue specimen and a cytology specimen, and double sampling.
Description
Technical Field
The invention relates to a medical instrument, in particular to a full-automatic negative pressure suction rotary-cut biopsy needle.
Background
The existing biopsy needle is mainly divided into a cutting biopsy gun with a sampling groove and a manual negative pressure aspiration biopsy needle, the cutting biopsy gun with the sampling groove can only take samples in the needle groove, the samples in the whole cylindrical needle tube cannot be extracted, the needle core extends out firstly, the needle tube is cut off again, the automatic forward punch is 2cm, the depth of the inserted tissue is uncontrollable, blood vessels and nerve injury of some weak tissues are easily caused, and the biopsy needle is unsafe. The manual negative pressure aspiration biopsy needle cannot automatically create a negative pressure environment and requires manual aspiration. And both biopsy needles can only take tissue biopsies and cannot take cell biopsies.
Disclosure of Invention
The invention aims to solve the technical problem of providing a full-automatic negative-pressure suction rotary-cut biopsy needle which can automatically retract a needle core to form vacuum and is provided with a device for effectively cutting out tissues, and the full-automatic negative-pressure suction rotary-cut biopsy needle can be used for tissue biopsy and cell biopsy.
The technical scheme for solving the technical problems is as follows: the utility model provides a full-automatic negative pressure suction rotary-cut biopsy needle, includes piston, sleeve, nook closing member and needle tubing, the piston inlays and establishes in the sleeve, nook closing member fixed connection is in the front end of piston, needle tubing fixed connection is in telescopic front end, be equipped with the cavity in the needle tubing, the nook closing member passes in proper order telescopic front end with the cavity of needle tubing promotes the piston reaches telescopic front end, the nook closing member stretches out the needle tubing, the piston with be equipped with automatic retraction device on the sleeve for make the nook closing member automatic retraction in the needle tubing and form the negative pressure and adsorb human tissue to the cavity mouth department of needle tubing, the front end of needle tubing is equipped with the rotary-cut device that is used for cutting human tissue down, still be equipped with in the cavity of needle tubing and be used for detaining human tissue in the detention the device of cavity, be equipped with on the sleeve lateral wall with the injection tube of cavity intercommunication.
The beneficial effects of the invention are as follows: the rotary cutting device at the port of the needle tube is cut off by rotary cutting, and the cylinder sample is taken by the in-tube retention device, so that the sampling success rate can be improved, the sampling quantity under the same aperture is more sufficient, the insertion depth can be controlled, and the safety is ensured; simultaneously taking a tissue specimen and a cytological specimen, double sampling and rotary cutting.
On the basis of the technical scheme, the invention can be improved as follows.
Further, the automatic retraction device comprises a pressing head, an inclined plane, a stop block, a pressing rod stop block and a spring, wherein the pressing head, the inclined plane and the stop block are arranged outside the sleeve, the pressing rod stop block and the spring are arranged on the piston, the pressing rod penetrates through the sleeve, extends out of the inclined plane and is jacked by the inclined plane, the pressing rod stop block is arranged in the middle of the pressing rod, after the pressing rod is jacked by the inclined plane, the stop block can be blocked by the pressing rod stop block, the piston penetrates through the spring, one end of the spring is abutted with the middle of the piston, and the other end of the spring is abutted with the front end of an inner cavity of the sleeve; the pressing rod is pressed, the pressing rod is used for pressing the pressing rod stop block to be separated from the stop block, and the sleeve automatically retracts and drives the needle core to retract under the action of the spring.
The automatic retraction device has the beneficial effects of compact structure and simple operation.
Further, a stop pin and a guide rail are arranged on the piston, a stop pin sliding groove and a guide rail sliding groove which are matched with the stop pin and the guide rail respectively are formed in the sleeve, the stop pin and the guide rail slide in the stop pin sliding groove and the guide rail sliding groove respectively, and the stop pin slides to the rear end of the stop pin sliding groove and is positioned when the piston is retracted to the rear end of the sleeve.
The beneficial effect of adopting above-mentioned further scheme is, and the backing pin can prevent that piston withdrawal back travel distance from being too big, and the guide rail can make piston and sleeve smooth-going when sliding, and fixes a position in circumference.
Further, the rotary cutting device comprises an arc bending pipe section at the front end of the needle tube, and a sharp edge is arranged at the foremost end of the arc bending pipe section.
The beneficial effect of adopting above-mentioned further scheme is that rotatory needle tubing, the circular arc bending that is equipped with sharp edge can be with human tissue rotary cutting off.
Further, the retention device comprises a conical fin arranged on the inner wall of the front end of the cavity of the needle tube, and the conical fin is inclined backwards.
The beneficial effect of adopting the further proposal is that the conical fins lead the human tissues entering the needle tube cavity to be retained in the cavity.
Further, the rear end of the needle tube is fixedly connected with a needle tube seat, and the needle tube seat is connected with the front end of the sleeve in a luer way.
The beneficial effect of adopting above-mentioned further scheme is, the installation of being convenient for and dismantlement.
Further, the rear end of the sleeve is provided with a handle which is convenient to hold, and the outer side wall of the sleeve is also provided with anti-skid bar patterns at even intervals.
The adoption of the further scheme has the beneficial effects that the operation is convenient to be carried out by hand in the operation, the anti-slip effect is realized, and misoperation is prevented.
Drawings
FIG. 1 is a schematic structural view of a sleeve of a full-automatic negative pressure aspiration rotary-cut biopsy needle provided by the invention;
FIG. 2 is a schematic view of the piston of a fully automatic negative pressure aspiration rotary-cut biopsy needle according to the present invention;
FIG. 3 is a schematic view of the handle and guide track chute of a fully automatic negative pressure aspiration rotary-cut biopsy needle of the present invention;
FIG. 4 is a schematic view of the structure of a needle tube of a full-automatic negative pressure aspiration rotary-cut biopsy needle according to the present invention;
FIG. 5 is an enlarged view of a portion of the forward end of the needle cannula of a fully automatic negative pressure aspiration rotary-cut biopsy needle of the present invention;
FIG. 6 is an enlarged view of a portion of a tapered fin in the barrel of a full-automatic negative pressure aspiration rotary-cut biopsy needle of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. sleeve, 2, stop pin chute, 3, injection tube, 4, buckle, 5, pressing head, 6, inclined plane, 7, bar pattern, 8, handle, 9, stop block, 10, piston, 11, needle core, 12, guide rail, 13, stop pin, 14, spring, 15, compression bar, 16, compression bar stop block, 17, needle tube, 18, guide rail chute, 19, needle tube seat, 20, cone-shaped fin.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.
As shown in fig. 1-6, the invention provides a full-automatic negative pressure aspiration rotary-cut biopsy needle, which comprises a piston 10, a sleeve 1, a needle core 1 and a needle tube 17, wherein the piston 10 is embedded in the sleeve 1, the needle core 11 is fixedly connected to the front end of the piston 10, the needle tube 17 is fixedly connected to the front end of the sleeve 1, a cavity is arranged in the needle tube 17, the needle core 11 sequentially passes through the front end of the sleeve 1 and the cavity of the needle tube 17, the piston 10 is pushed to the forefront end of the sleeve 1, the needle core 11 extends out of the needle tube 17, the piston 10 and the sleeve 1 are provided with automatic retraction devices for automatically retracting the needle core 11 into the needle tube 17 and forming negative pressure to adsorb human tissues to the cavity opening of the needle tube 17, the front end of the needle tube 17 is provided with a rotary-cut device for cutting the human tissues, the cavity of the needle tube 17 is also internally provided with a retention device for retaining the human tissues in the cavity, and the side wall of the sleeve 1 is provided with an injection tube 3 communicated with the cavity.
The automatic retraction device comprises a pressing head 5, an inclined surface 6, a stop 9, a pressing rod 15, a pressing rod stop 16 and a spring 14, wherein the pressing head 5, the inclined surface 6 and the stop 9 are arranged outside the sleeve 1, the pressing rod 15, the pressing rod stop 16 and the spring 14 are arranged on the piston 10, the pressing rod 15 penetrates through the sleeve 1, extends out of the inclined surface 6 and is jacked by the inclined surface 6, the pressing rod stop 16 is arranged in the middle of the pressing rod 15, after the pressing rod 15 is jacked by the inclined surface 6, the stop 9 can be blocked by the pressing rod stop 16, the piston 10 penetrates through the spring 14, one end of the spring 14 is abutted with the middle of the piston 10, and the other end of the spring 14 is abutted with the front end of an inner cavity of the sleeve 1; pressing the pressing rod 15, the pressing rod 15 presses the pressing rod stop block 16 down and breaks away from the clamping connection with the stop block 9, and under the action of the spring 14, the sleeve 1 automatically retracts and drives the needle core 1 to retract.
The piston 10 is provided with a stop pin 13 and a guide rail 12, the sleeve 1 is internally provided with a stop pin chute 2 and a guide rail chute 18 which are respectively matched with the stop pin 13 and the guide rail 12, the stop pin 13 and the guide rail 12 respectively slide in the stop pin chute 2 and the guide rail chute 18, and when the piston 10 is retracted to the rear end of the sleeve 1, the stop pin 13 slides to the rear end of the stop pin chute 2 and is positioned.
The rotary cutting device comprises an arc bending pipe section at the front end of the needle tube 17, and a sharp edge is arranged at the forefront end of the arc bending pipe section.
The retention device comprises a conical fin 20 arranged on the inner wall of the front end of the cavity of the needle tube 17, and the conical fin 20 is inclined backwards. The taper fins 20 are annularly provided in the needle tube 17 with the axis of the needle tube 17 as a symmetry center, and are provided in plurality.
The rear end of the needle tube 17 is fixedly connected with a needle tube seat 19, and the needle tube seat 19 is connected with the front end of the sleeve 1 in a luer way. Luer connectors are convenient connection devices for use in the medical industry that greatly simplify the administration of liquid and gaseous medical fluids, a complete luer connector should contain a male luer lock device and a female luer lock device.
The rear end of the sleeve 1 is provided with a handle 8 which is convenient to hold, and the outer side wall of the sleeve 1 is also provided with anti-skid ribs 7 at even intervals.
Working principle:
the handle 8 of the pushing piston 10 is pressed to move the piston 10 to the front end of the sleeve 1, meanwhile, the needle tip of the needle 11 stretches out of the needle tube 17 a little, the operation is conducted under the guidance of ultrasound or CT, the biopsy needle is penetrated through skin to abut against the tumor, the automatic rebound device arranged on the piston 10 and the sleeve 1 is pressed down, the piston 10 rebounds rapidly and drives the needle 11 to retract into the needle tube 17, the tumor is adsorbed on the mouth of the needle tube 17 by the instantaneously formed negative pressure, the needle 11 retracts, a section of negative pressure sampling space is formed in the needle tube 17, the operator continues to enter the needle, the tumor is cut by the cutting edge at the top end of the needle tube 17 and enters the needle tube 17 into a specimen, the inner wall of the needle tube 17 is in a diagonal thread structure, the specimen is easy to escape difficultly, the top end of the needle tube 17 is provided with a rotary cutting device, the needle is stopped from rotating the needle body 360 DEG off axis after reaching a preset depth, the cutting edge is arranged at the top of the needle tube 17, the needle tube 11 is pushed forward by the pushing piston 10 after the needle is retracted, and the specimen is pushed forward, the biopsy needle 11 is pushed out for histology. The needle tube 17 is also provided with micro-tissues and cell residues, the side wall of the sleeve 1 is provided with an injection tube 3 communicated with the cavity, the injection tube 3 is connected with an injector, physiological saline is injected to elute the residual micro-tissues, so that the residual micro-tissues flow out of the mouth of the needle tube 17 and the injection tube 3, and the tissue eluent can be used for cytological smear.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (5)
1. The full-automatic negative-pressure aspiration rotary-cut biopsy needle is characterized by comprising a piston (10), a sleeve (1), a needle core (11) and a needle tube (17), wherein the piston (10) is embedded in the sleeve (1) and is in sliding connection with the sleeve (1), the needle core (11) is fixedly connected with the front end of the piston (10), the needle tube (17) is detachably connected with the front end of the sleeve (1), a cavity is arranged in the needle tube (17), the needle core (11) sequentially penetrates through the front end of the sleeve (1) and the cavity of the needle tube (17), the piston (10) is pushed to the foremost end of the sleeve (1), the needle core (11) extends out of the needle tube (17), an automatic retraction device is arranged on the piston (10) and the sleeve (1) and is used for automatically retracting the needle core (11) into the cavity (17) and forming negative pressure to suck human tissues into the cavity of the needle tube (17), the front end (17) is provided with a cavity for retaining the human tissues in the cavity (17), and the cavity is further communicated with the needle tube (3) by the rotary-cut needle tube;
the automatic retraction device comprises a pressing head (5), an inclined surface (6) and a stop block (9) which are arranged outside the sleeve (1), and a pressing rod (15), a pressing rod stop block (16) and a spring (14) which are arranged on the piston (10), wherein the pressing rod (15) penetrates through the sleeve (1) and extends to the inclined surface (6) and is jacked up by the inclined surface (6); the pressure bar stop block (16) is arranged in the middle of the pressure bar (15), and after the pressure bar (15) is jacked up by the inclined plane (6), the pressure bar stop block (16) can clamp the stop block (9); the piston (10) passes through the spring (14), one end of the spring (14) is abutted with the middle part of the piston (10), and the other end is abutted with the front end of the inner cavity of the sleeve (1); pressing the pressing rod (15), wherein the pressing rod (15) presses the pressing rod stop block (16) down and is separated from the clamping connection with the stop block (9), and the sleeve (1) automatically retracts under the action of the spring (14) and drives the needle core (11) to retract;
be equipped with backing pin (13) and guide rail (12) on piston (10), set up in sleeve (1) respectively with backing pin (13) with guide rail (12) matched backing pin spout (2) and guide rail spout (18), backing pin (13) with guide rail (12) are in backing pin spout (2) with guide rail spout (18) are interior respectively, piston (10) retract to sleeve (1) rear end time backing pin (13) slide to backing pin spout (2) rear end and location.
2. The full-automatic negative pressure aspiration rotary-cut biopsy needle according to claim 1, wherein the rotary-cut device comprises a circular arc curved tube section at the front end of the needle tube (17), and the foremost end of the circular arc curved tube section is provided with a sharp edge.
3. The full-automatic negative pressure aspiration rotary-cut biopsy needle according to claim 1, wherein the retention means comprises a tapered fin (20) provided on the inner wall of the front end of the cavity of the needle tube (17), the tapered fin (20) being inclined rearward.
4. A full automatic negative pressure aspiration rotary cut biopsy needle according to claim 2 or 3, wherein the rear end of the needle tube (17) is fixedly connected with a needle tube seat (19), and the needle tube seat (19) is connected with the front end of the sleeve (1) in a luer way.
5. A fully automatic negative pressure aspiration rotary cut biopsy needle according to any one of claims 1-3, wherein the rear end of the sleeve (1) is provided with a handle (8) which is convenient to hold, and the outer side wall of the sleeve (1) is also provided with anti-slip ribs (7) at uniform intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906575.3A CN107595324B (en) | 2017-09-29 | 2017-09-29 | Full-automatic negative pressure suction rotary cut type biopsy needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710906575.3A CN107595324B (en) | 2017-09-29 | 2017-09-29 | Full-automatic negative pressure suction rotary cut type biopsy needle |
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| Publication Number | Publication Date |
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| CN107595324A CN107595324A (en) | 2018-01-19 |
| CN107595324B true CN107595324B (en) | 2023-07-25 |
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| CN201710906575.3A Active CN107595324B (en) | 2017-09-29 | 2017-09-29 | Full-automatic negative pressure suction rotary cut type biopsy needle |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108836404B (en) * | 2018-07-05 | 2021-01-08 | 中南大学湘雅医院 | Biopsy device for cyst wall tissue |
| CN108577902A (en) * | 2018-07-16 | 2018-09-28 | 黄月亮 | A kind of rotating cutting type biopsy needle |
| CN109276278B (en) * | 2018-11-28 | 2023-09-01 | 河南牧业经济学院 | Small animal subcutaneous tumor drawing holder |
| CN111603304A (en) * | 2020-01-05 | 2020-09-01 | 永康市第一人民医院 | Rusty ring type corneal foreign body removing needle |
| CN112869785B (en) * | 2021-01-29 | 2022-09-06 | 重庆市人民医院 | Clinical sample censorship equipment that uses of department of neurology |
| CN113303837B (en) * | 2021-06-03 | 2023-02-21 | 江阴励德医疗科技有限公司 | Biopsy needle for cutting tissue through rotating needle sheath |
| CN113855097A (en) * | 2021-09-28 | 2021-12-31 | 黄文侨 | Improved biopsy needle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208640770U (en) * | 2017-09-29 | 2019-03-26 | 施康培医疗科技（武汉）有限公司 | A kind of full-automatic negative-pressure suction rotating cutting type biopsy needle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080281226A1 (en) * | 2004-05-11 | 2008-11-13 | Inrad, Inc. | Core Biopsy Device with Specimen Length Adjustment |
| CN104799886A (en) * | 2014-01-27 | 2015-07-29 | 浙江万马集团电子有限公司 | Piston cutting type biopsy needle |
| CN203815467U (en) * | 2014-04-30 | 2014-09-10 | 中国人民解放军第三军医大学第二附属医院 | Safe arterial blood gas needle |
| CN204655684U (en) * | 2015-05-21 | 2015-09-23 | 姜小艳 | Syringe |
| CN107174293A (en) * | 2017-05-24 | 2017-09-19 | 施康培医疗科技（武汉）有限公司 | A kind of Orthopedic biopsy puncture needle component |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208640770U (en) * | 2017-09-29 | 2019-03-26 | 施康培医疗科技（武汉）有限公司 | A kind of full-automatic negative-pressure suction rotating cutting type biopsy needle |
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Effective date of registration: 20230630 Address after: Room 13, No. 68 Qingji Avenue, Xinshi Town, Jingshan County, Jingmen City, Hubei Province, 431800 Applicant after: Chen Zhaodi Address before: 5 / F, building c2-4, Optical Valley Biological Innovation Park, 666 Gaoxin Avenue, Donghu high tech Development Zone, Wuhan City, Hubei Province, 430000 Applicant before: SHIKANGPEI MEDICAL TECHNOLOGY (WUHAN) Co.,Ltd. |
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