CN111920457A - Biopsy needle - Google Patents
Biopsy needle Download PDFInfo
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- CN111920457A CN111920457A CN202010628419.7A CN202010628419A CN111920457A CN 111920457 A CN111920457 A CN 111920457A CN 202010628419 A CN202010628419 A CN 202010628419A CN 111920457 A CN111920457 A CN 111920457A
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- scale rod
- handle
- rod
- needle tube
- scale
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to the technical field of medical instruments and discloses a biopsy needle, which comprises a needle tube assembly, a first scale rod and a second scale rod; the first scale rod and the second scale rod are of hollow structures; the first scale rod is sleeved with a first handle, and the second scale rod is sleeved with a second handle; the needle tube assembly penetrates through the first scale rod and the second scale rod to be connected with the second handle, one end of the second scale rod extends into the first handle, and the needle tube assembly, the first scale rod, the second scale rod, the first handle and the second handle are integrated. Compared with the conventional biopsy needle, the length of the needle tube assembly exposed out of the first scale rod is controlled by the second handle through sliding the second scale rod, the second handle is limited by the second positioning mechanism, the first handle is limited by the first positioning mechanism, the length of the needle tube assembly can be accurately controlled, and the consistent needle-out length and the fixed position of each time of needle-out control during repeated puncture are guaranteed.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a biopsy needle.
Background
When diagnosing diseases, in order to accurately find out the cause of diseases, a biopsy is required to be performed on a focus, and a doctor acquires a certain amount of living tissues from the focus by using a medical instrument to perform pathological analysis so as to perform symptomatic treatment.
The common apparatus in the prior art is a bullet gun type biopsy needle, and the device releases a built-in bullet to ensure that the biopsy needle performs biopsy in a focus; when in use, various measures are taken, such as B-ultrasonic, CT and the like, the biopsy needle is guided to puncture a focus, then the spring is released, the biopsy needle rapidly punctures in the focus, if tissues are not obtained at one time, the actions are required to be repeated, and the injury probability is increased; meanwhile, because the force is formed by the spring, the depth of the biopsy needle is not easy to control, and the biopsy of the focus beside the important visceral organs is difficult to carry out.
Disclosure of Invention
In order to solve the problem that a needle tube of a biopsy needle is not easy to control in the prior art, the invention provides the biopsy needle, the length of the needle tube can be controlled by arranging a positioning mechanism, the flexibility is high, and the use is convenient.
In order to achieve the purpose, the invention adopts the main technical scheme that:
a biopsy needle comprises a needle tube assembly, a first scale rod and a second scale rod; the first scale rod and the second scale rod are of hollow structures; the first scale rod is sleeved with a first handle, and the second scale rod is sleeved with a second handle; the needle tube assembly penetrates through the first scale rod and the second scale rod to be connected with the second handle, one end of the second scale rod extends into the first handle, and the needle tube assembly, the first scale rod, the second scale rod, the first handle and the second handle form a whole;
the first handle can slide along the axial directions of the first scale rod and the second scale rod, and the second handle can slide along the axial direction of the second scale rod; the first scale rod is connected with a first positioning mechanism which is used for limiting the first handle to move; the second scale rod is connected with a second positioning mechanism, the second positioning mechanism is used for limiting the movement of the second handle, and the second positioning mechanism is positioned between the first handle and the second handle; when the second handle slides along the second scale rod, the second handle drives the needle tube component to move so as to change the length of the needle tube component exposed out of the first scale rod, and the second handle is limited by the second positioning mechanism, so that the needle outlet length at each time is controlled and the position is fixed.
Preferably, the first positioning mechanism comprises a first positioning lock and a stop cover connected with the first positioning lock, the first positioning lock is connected to the first scale rod, the stop cover is sleeved on the first scale rod, and the stop cover can slide on the first scale rod; the first positioning lock is provided with a plurality of positioning grooves in an annular mode, and the stop cover is clamped with the positioning grooves.
Preferably, second positioning mechanism includes second location lock and protective cover, second location lock is connected on the second scale rod, the protective cover cup joint in on the second scale rod, and the protective cover can slide on the second scale rod, the protective cover with the cooperation of second handle is connected.
Preferably, one end of the first scale rod is further provided with a sleeve, and the sleeve is sleeved on the needle tube assembly.
Preferably, a spring is arranged in one end, far away from the first scale rod, of the sleeve, and the spring abuts against the needle tube assembly and is used for reducing friction between the sleeve and the needle tube assembly.
Preferably, a locking screw is screwed between the first handle and the first graduated rod, and the head of the screw is round-head-shaped.
Preferably, the first graduated rod and the second graduated rod are both provided with graduated scales.
The invention provides a biopsy needle. The method has the following beneficial effects:
the second handle is through the length that exposes first scale bar at second scale bar sliding control needle tubing subassembly to it is spacing to the second handle through second positioning mechanism, and first positioning mechanism is spacing to first handle, the length of control needle tubing subassembly that can be accurate, guarantees to control the unanimous and fixed position of length of drawing a needle at every turn when puncturing repeatedly.
Drawings
FIG. 1 is a cross-sectional view of a biopsy needle construction of the present invention;
FIG. 2 is a schematic view of the external structure of the biopsy needle of the present invention;
FIG. 3 is a schematic view of a first positioning lock according to the present invention;
FIG. 4 is a schematic view of a connection structure of a second handle and a second scale bar according to the present invention;
FIG. 5 is a schematic view of the needle cannula assembly of the present invention.
[ description of reference ]
In the figure: 10-a needle tube assembly, 20-a sleeve, 30-a first handle, 40-a second handle, 50-a first positioning mechanism, 51-a first positioning lock, 511-a positioning groove, 52-a stop cover, 60-a second positioning mechanism, 61-a second positioning lock, 62-a protective cover, 70-a metal sleeve, 80-a buckle, 90-a probe screw cap, 100-a first scale rod and 110-a second scale rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present invention provides a technical solution: a biopsy needle comprises a needle tube component 10, a first handle 30, a second handle 40, a first positioning mechanism 50, a second positioning mechanism 60, a metal sleeve 70, a probe wire cap 90, a first scale rod 100 and a second scale rod 110;
the first and second graduated rods 100 and 110 are hollow structures; the first handle 30 is sleeved on the first scale rod 100, and the second handle 40 is sleeved on the second scale rod 110; the needle tube assembly 10 penetrates through the first scale rod 100 and the second scale rod 110 to be connected with the second handle 40, one end of the second scale rod 110 extends into the first handle 30, and the needle tube assembly 10, the first scale rod 100, the second scale rod 110, the first handle 30 and the second handle 40 form a whole;
the first handle 30 can slide along the axial direction of the first scale rod 100 and the second scale rod 110, and the second handle 40 can slide along the axial direction of the second scale rod 110; the first scale rod 100 is connected with a first positioning mechanism 50, and the first positioning mechanism 50 is used for limiting the movement of the first handle 30; the second scale rod 110 is connected with a second positioning mechanism 60, the second positioning mechanism 60 is used for limiting the movement of the second handle 40, and the second positioning mechanism 60 is positioned between the first handle 30 and the second handle 40; when the second handle 40 slides along the second graduated rod 110, the second handle 40 drives the needle tube assembly 10 to move to change the length of the needle tube assembly 10 exposed out of the first graduated rod 100, and the second handle 40 is limited by the second positioning mechanism 60 to control the needle-out length at each time and fix the position.
In this embodiment, the needle tube assembly 10 is composed of a needle tube and a stylet, the end of the needle tube in the needle tube assembly 10 is fixed to the second handle 40, the first handle 30 and the second handle 40 slide through the first scale rod 100 and the second scale rod 110 to control the length of the needle tube, and the first handle 30 and the second handle 40 are respectively limited by the first positioning mechanism 50 and the second positioning mechanism 60, so as to ensure that the needle withdrawing length of each time is controlled and the position is fixed during repeated puncture.
As shown in fig. 1 and fig. 3, in one embodiment, the first positioning mechanism 50 includes a first positioning lock 51 and a stop cover 52 connected to the first positioning lock 51, the first positioning lock 51 is connected to the first graduated rod 100, the stop cover 52 is sleeved on the first graduated rod 100, and the stop cover 52 can slide on the first graduated rod 100; the first positioning lock 51 is provided with a plurality of positioning slots 511, and the stop cover 52 is clamped with the positioning slots 511;
in this embodiment, the first scale rod 100 is provided with external threads on the surface thereof, and the first positioning lock 51 is provided with internal threads on the inner surface thereof; the number of the positioning slots 511 on the first positioning lock 51 is preferably 4, and when the assembly is carried out, the convex part on the stop cover 52 is clamped in the positioning slot 511, which is beneficial for the first positioning mechanism 50 to limit the first handle 30;
in one embodiment, the second positioning mechanism 60 includes a second positioning lock 61 and a protective cover 62, the second positioning lock 61 is connected to the second scale rod 110, the protective cover 62 is sleeved on the second scale rod 110, the protective cover 62 can slide on the second scale rod 110, and the protective cover 62 is connected to the second handle 40 in a matching manner.
In this embodiment, the protecting cover 62 protects the second positioning lock 61 from rubbing against the second handle 40, and prevents the second handle 40 from being damaged.
In one embodiment, the first scale bar 100 is further provided with a sleeve 20 at one end, and the sleeve 20 is sleeved on the needle tube assembly 10.
It should be noted that the first positioning lock 51 and the second positioning lock 61 are rotating shrink sleeves, and are screwed by the tooth profile of the eccentric involute, and after the first positioning lock 51 and the second positioning lock 61 are rotated, the first positioning lock 51 is engaged with the concentric rotating teeth on the first scale rod 100, so as to limit the first handle 30; the second positioning lock 61 is engaged with the concentric rotation teeth of the second dial rod 110 to limit the second handle 40.
Of course, in this embodiment, a spring is disposed in an end of the sleeve 20 away from the first scale bar 100, and the spring is abutted against the needle tube assembly 10 for reducing friction between the sleeve 20 and the needle tube assembly 10, protecting the head of the needle tube, and preventing the needle tube from moving back and forth in the sleeve 20 to damage the head of the needle tube and the head of the needle tube from damaging the sleeve 20.
In the invention, the first graduated rod 100 and the second graduated rod 110 are both provided with the graduated scales, which is beneficial for a user to accurately control the length of the needle tube and improve the success rate of obtaining the living tissue.
Furthermore, the end of the first scale rod 100 is also clamped with a buckle 80, so that when the biopsy instrument is used, the biopsy needle can be fixed on other equipment through the buckle 80, and the operation and temporary placement of the biopsy needle are facilitated.
As shown in fig. 4, the gaps between the first handle 30 and the second handle 40 and between the first scale rod 100 and the second scale rod 110 are 0.5 mm, and at the same time, the first scale rod 100 and the second scale rod 110 are provided with a clamping groove, and the first handle 30 and the second handle 40 are provided with a protrusion matched with the clamping groove, so that the first handle 30 and the second handle 40 are kept relatively stable, and the length of the needle tube is conveniently controlled.
As shown in FIG. 5, in the present invention, the needle of the needle tube assembly 10 is in the shape of a sharp edge and has two oblique cutting angles, the middle point between the two oblique cutting angles is used as a golden section point, and the two times of cutting make the needle sharper and the puncture force minimum; the outer surface of the needle head adopts the annular grooves which are uniformly distributed along the annular direction, which is beneficial to the attachment of living tissues and improves the success rate of acquisition.
The invention is characterized in that the application process is as follows:
fine adjustment is carried out on the positions 30 and 100 according to the positions of the biopsy needles detected in the human body, then positioning is carried out, and locking is carried out through a first positioning lock 51; the second handle 40 and needle assembly 10 are integral, and the depth of the biopsy is adjusted by axially moving the position of the second handle 40, and after locking the position by the second positioning lock 61, the second handle 40 is repeatedly pulled to extract tissue and interstitial fluid through the needle assembly 10.
The existing product needs a doctor and a nurse to operate in the using process. The nurse holds the screen after seeing the position on the screen, fixes the front end with the other hand, and after communicating with the doctor, the doctor fixes with one hand and operates with the other hand. Compared with the existing biopsy needle product, the technical scheme of the invention firstly solves the problems that a doctor and a nurse do not need to communicate, and only the doctor needs to adjust the position to be locked and fixed by one person and then operates by one hand; the second locking is convenient, and the operation of screwing by using the tooth form of the eccentric involute is simple and convenient after the scale position is adjusted to a certain distance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A biopsy needle, characterized by: comprises a needle tube component, a first scale rod and a second scale rod; the first scale rod and the second scale rod are of hollow structures; the first scale rod is sleeved with a first handle, and the second scale rod is sleeved with a second handle; the needle tube assembly penetrates through the first scale rod and the second scale rod to be connected with the second handle, one end of the second scale rod extends into the first handle, and the needle tube assembly, the first scale rod, the second scale rod, the first handle and the second handle form a whole;
the first handle can slide along the axial directions of the first scale rod and the second scale rod, and the second handle can slide along the axial direction of the second scale rod; the first scale rod is connected with a first positioning mechanism which is used for limiting the first handle to move; the second scale rod is connected with a second positioning mechanism, the second positioning mechanism is used for limiting the movement of the second handle, and the second positioning mechanism is positioned between the first handle and the second handle; when the second handle slides along the second scale rod, the second handle drives the needle tube component to move so as to change the length of the needle tube component exposed out of the first scale rod, and the second handle is limited by the second positioning mechanism, so that the needle outlet length at each time is controlled and the position is fixed.
2. A biopsy needle according to claim 1, wherein: the first positioning mechanism comprises a first positioning lock and a stop cover connected with the first positioning lock, the first positioning lock is connected to the first scale rod, the stop cover is sleeved on the first scale rod, and the stop cover can slide on the first scale rod; the first positioning lock is provided with a plurality of positioning grooves in an annular mode, and the stop cover is clamped with the positioning grooves.
3. A biopsy needle according to claim 1, wherein: second positioning mechanism includes second location lock and protective cover, second location lock is connected on the second scale rod, the protective cover cup joint in on the second scale rod, and the protective cover can slide on the second scale rod, the protective cover with the cooperation of second handle is connected.
4. A biopsy needle according to claim 1, wherein: one end of the first scale rod is further provided with a sleeve, and the sleeve is sleeved on the needle tube assembly.
5. A biopsy needle according to claim 4, wherein: and a spring is arranged in one end of the sleeve, which is far away from the first scale rod, and the spring is abutted against the needle tube assembly and used for reducing the friction between the sleeve and the needle tube assembly.
6. A biopsy needle according to claim 1, wherein: the first handle and the first graduated rod are screwed up by a locking screw, and the head of the screw is round.
7. A biopsy needle according to claim 1, wherein: and the first graduated rod and the second graduated rod are both provided with graduated scales.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010628419.7A CN111920457A (en) | 2020-07-01 | 2020-07-01 | Biopsy needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010628419.7A CN111920457A (en) | 2020-07-01 | 2020-07-01 | Biopsy needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111920457A true CN111920457A (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010628419.7A Pending CN111920457A (en) | 2020-07-01 | 2020-07-01 | Biopsy needle |
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| Country | Link |
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| CN (1) | CN111920457A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113317850A (en) * | 2021-05-14 | 2021-08-31 | 上海埃尔顿医疗器械有限公司 | Ultrasonic biopsy needle |
| CN113331870A (en) * | 2021-06-07 | 2021-09-03 | 上海埃尔顿医疗器械有限公司 | Positioning structure of ultrasonic biopsy needle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090264794A1 (en) * | 2005-09-06 | 2009-10-22 | Olympus Medical Systems Corp. | Tissue biopsy needle apparatus |
| CN205198041U (en) * | 2015-11-26 | 2016-05-04 | 龙飞 | Through scope puncture sampler |
| CN105943091A (en) * | 2016-06-01 | 2016-09-21 | 南京法迈特科技发展有限公司 | Endoscopic biopsy apparatus |
| CN207075919U (en) * | 2017-01-20 | 2018-03-09 | 南京法迈特科技发展有限公司 | A kind of endoscopic surgery puncture needle |
| CN209847252U (en) * | 2018-07-28 | 2019-12-27 | 上海诺帮生物科技有限公司 | Disposable endoscope ultrasonic suction biopsy needle |
-
2020
- 2020-07-01 CN CN202010628419.7A patent/CN111920457A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090264794A1 (en) * | 2005-09-06 | 2009-10-22 | Olympus Medical Systems Corp. | Tissue biopsy needle apparatus |
| CN205198041U (en) * | 2015-11-26 | 2016-05-04 | 龙飞 | Through scope puncture sampler |
| CN105943091A (en) * | 2016-06-01 | 2016-09-21 | 南京法迈特科技发展有限公司 | Endoscopic biopsy apparatus |
| CN207075919U (en) * | 2017-01-20 | 2018-03-09 | 南京法迈特科技发展有限公司 | A kind of endoscopic surgery puncture needle |
| CN209847252U (en) * | 2018-07-28 | 2019-12-27 | 上海诺帮生物科技有限公司 | Disposable endoscope ultrasonic suction biopsy needle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113317850A (en) * | 2021-05-14 | 2021-08-31 | 上海埃尔顿医疗器械有限公司 | Ultrasonic biopsy needle |
| CN113331870A (en) * | 2021-06-07 | 2021-09-03 | 上海埃尔顿医疗器械有限公司 | Positioning structure of ultrasonic biopsy needle |
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