CN115813453A - Negative pressure suction biopsy needle - Google Patents
Negative pressure suction biopsy needle Download PDFInfo
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- CN115813453A CN115813453A CN202211435332.3A CN202211435332A CN115813453A CN 115813453 A CN115813453 A CN 115813453A CN 202211435332 A CN202211435332 A CN 202211435332A CN 115813453 A CN115813453 A CN 115813453A
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- 238000001574 biopsy Methods 0.000 title claims abstract description 28
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 239000012780 transparent material Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000005070 sampling Methods 0.000 abstract description 32
- 239000011111 cardboard Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 206010028980 Neoplasm Diseases 0.000 description 4
- 238000003745 diagnosis Methods 0.000 description 4
- 238000010827 pathological analysis Methods 0.000 description 4
- 239000008280 blood Substances 0.000 description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000036770 blood supply Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 206010016654 Fibrosis Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 210000000481 breast Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004761 fibrosis Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007431 microscopic evaluation Methods 0.000 description 1
- 238000013188 needle biopsy Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
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- 210000001685 thyroid gland Anatomy 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The invention relates to a negative pressure suction biopsy needle, and belongs to the technical field of medical instruments. The biopsy needle comprises a negative pressure device, an outer needle and a needle seat, wherein the outer needle is of a hollow structure, and the negative pressure device is communicated with the outer needle through the needle seat; the needle base is provided with a switch for opening and closing a communication channel between the negative pressure device and the outer needle. The invention can accurately control the sampling amount and is convenient for doctors with different clinical experiences to use.
Description
Technical Field
The invention relates to a negative pressure suction biopsy needle, and belongs to the technical field of medical instruments.
Background
Biopsy needles are used for microscopic evaluation of cells in diseased tissue to aid in the preliminary or final diagnosis of infection, tumors, or other clinical conditions. The main operation modes of the existing puncture biopsy needle are a lifting and inserting method and a negative pressure suction method.
When a doctor takes a biopsy, the pressure of blood in the tissue is absorbed into the needle tube or the negative pressure is absorbed into the needle tube, when the needle needs to be pulled out, the doctor needs certain switching operation time, and the time is different and uncertain among people, so the absorption amount of the sampling cannot be accurately controlled.
In addition, when a doctor uses the biopsy needle, the time for pulling the needle is confused, the sampling amount is not controlled well, and the subsequent pathological analysis is influenced. The common time for pulling out the needle depends on the personal experience of the doctor, and the time is counted or counted. However, both of these approaches are not scientific. First, because each nodule is of different nature, blood supply is different. The needle pulling time should be determined according to the nature of the tumor and the sampling difficulty. The blood supply of the tumor is rich, the bleeding is easy to occur in a short time, the sampling space is filled quickly, and the stopping is required immediately; for tumors with significant fibrosis, cells are difficult to collect, and increased puncture time or number of insertions and extractions is required.
That is to say, the prior art has the technical problem that the accurate needle pulling time is difficult to judge, so that the sampling quantity is too much or too little after the needle is pulled out. If the sampling amount is too small, the sampling frequency is more, the biopsy efficiency and the biopsy time efficiency are affected, and the pain of a patient can be increased; excessive sampling may cause blood and cells to form a clot in the biopsy needle, thereby affecting the quality of the subsequent smear, failing to meet the requirements of pathological analysis, and further affecting the next diagnosis of the doctor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a negative pressure aspiration biopsy needle is provided which can accurately control the amount of aspiration of a sample.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a negative pressure suction biopsy needle comprises a negative pressure device, an outer needle and a needle seat, wherein the outer needle is of a hollow structure, and the negative pressure device is communicated with the outer needle through the needle seat; the needle base is provided with a switch for opening and closing a communication channel between the negative pressure device and the outer needle.
The operation process of the product of the invention is as follows: the negative pressure device is connected with a needle seat with an outer needle, and a switch on the needle seat is closed firstly to isolate the negative pressure device from the atmospheric pressure; then, after negative pressure is prefabricated, an outer needle is inserted into a target position, then a switch is opened to enable a negative pressure device to be communicated with a needle point, so that the negative pressure is released, a needle tube of the outer needle sucks cell tissues in the negative pressure releasing process, and at the moment, the negative pressure device can be opened or closed in real time through the switch to control the sampling amount; after sampling is finished, pulling out the needle; and finally, utilizing a negative pressure device to push out and sample under positive pressure, and handing over to subsequent pathological analysis.
The invention overcomes the defect that the drawing amount of a sample is difficult to accurately control in the prior art when the needle is pulled out, and the switch is arranged on the needle seat, so that when the needle is required to be pulled out after the needle pulling time is accurately judged, the switch is firstly closed, and then the subsequent needle pulling operation is carried out, at the moment, the drawing amount of the sample is not changed, thereby avoiding the problem that the drawing amount cannot be accurately controlled due to different needle pulling time of the doctor operation, therefore, the sampling is accurate, the quantitative sampling can be realized, the timeliness is better, the sampling efficiency and the diagnosis accuracy are effectively improved, the probability of pollution sampling or repeated sampling can be reduced, and the pain of a patient is relieved.
It should be noted that, in the present invention, one end near the core bar pusher is defined as a rear end, and the other end is defined as a front end.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of a biopsy needle.
Fig. 2 is a structural schematic view of the needle holder.
Fig. 3 is a schematic diagram of the structure of the switch.
Fig. 4 is a schematic structural view of the negative pressure device.
Fig. 5 is a cross-sectional view of fig. 4.
FIG. 6 is a schematic view of the engagement of a card board with a card slot.
Fig. 7 is a schematic view of the structure of the card.
Reference numerals: 1. a core bar; 2. a needle cylinder; 3. a baffle plate; 4. clamping a plate; 5. pushing a hand; 6. a protruding member; 7. a card slot; 8. a seal ring; 9. an external luer structure; 10. hollowing out; 101. a negative pressure device; 102. a needle seat; 103. an outer needle; 104. a switch; 105. a connection section; 106. an observation section; 107. a handheld section; 108. assembling the sections; 109. a button; 110. a gap.
Detailed Description
Example one
The present embodiment relates to a negative pressure aspiration biopsy needle, as shown in fig. 1 and fig. 2, including a negative pressure device 101, an outer needle 103 and a needle seat 102, the common negative pressure device can be adopted as long as it meets medical standards and parameter requirements, the outer needle 103 is a hollow structure, and the negative pressure device 101 is communicated with the outer needle 103 through the needle seat 102; the needle seat 102 is provided with a switch 104 for opening and closing a communication channel between the negative pressure device 101 and the outer needle 103.
The switch 104 may be disposed at any location on the needle hub 102 and may employ a conventional valve structure, such as a ball valve or the like. However, for convenience of operation, in this embodiment, as shown in fig. 3, the switch 104 preferably has the following structure: the switch 104 comprises a button 109 inserted into the needle seat 102 from the outside of the needle seat 102 and an elastic opening and closing structure positioned in the needle seat 102, two ends of the elastic opening and closing structure are respectively communicated with the negative pressure device 101 and the outer needle 103, and a gap 110 is arranged in the middle of the elastic opening and closing structure; when the button 109 is released, the middle gap 110 of the elastic opening and closing structure is kept closed, and when the button 109 is pressed down, the middle gap 110 of the elastic opening and closing structure is pressed to deform and then expand to form a channel. The elastic opening and closing structure is preferably made of silica gel, a middle gap of the elastic opening and closing structure keeps a tight closing state in a normal state, and a button deforms to form a channel when pressed down.
In the use, when the needle needs to be pulled out after the time of pulling out the needle is accurately judged, the switch is firstly closed, and then the subsequent needle pulling operation is carried out, at the moment, the drawing amount of the sample is not changed any more, so that the problem that the drawing amount cannot be accurately controlled due to different needle pulling time of the doctor is solved.
The above accurate control of the amount of suction is based on accurately judging the timing of needle withdrawal, but as described in the background, there is some confusion among doctors about the timing of needle withdrawal. In order to accurately judge the needle pulling time, which is no longer dependent on the experience of the operator and is convenient for doctors with different clinical experiences, the embodiment is improved as follows: the needle base 102 comprises a connecting section 105, an observing section 106, a holding section 107 and an assembling section 108 which are connected together in sequence, wherein the connecting section 105 is fixedly connected with the outer needle 103, and the assembling section 108 is detachably connected with the negative pressure device 101. The viewing section 106 is preferably made of a transparent material, or is provided with a plurality of viewing windows made of a transparent material. Switch 104 is preferably disposed on a hand-held section 107 of hub 102.
Through the improvement, a doctor can judge the needle pulling time according to the blood color condition of the observation section by observing the observation section of the needle seat, accurately determine to reach the sampling target, and then close the negative pressure device by matching with the switch to pull out the needle tube of the outer needle, thereby more accurately controlling the sampling amount. In addition, during the needle biopsy, the view of the doctor basically stays on the display screen of the device to observe the ultrasound image at the same time, so that generally, the observation section is not too short, and after the observation section is found to have cell tissues (displayed as red), the operator needs to be left with a certain reaction time to avoid pollution of sampling after excessive sampling.
Preferably, the tip of the outer needle 103 is provided with an enhanced ultrasound contrast mark (not shown in the figure) for facilitating medical image guidance.
Example two
The present embodiment is an improvement on the first embodiment, and is different from the first embodiment in that: as shown in fig. 4 and 5, the negative pressure device in this embodiment includes a core rod 1 and a needle cylinder 2, the needle cylinder 2 is sleeved outside the core rod 1, a push handle 5 is disposed at the rear end of the core rod 1, the core rod 1 is preferably made of PP, the needle cylinder 2 is preferably made of transparent material, and the outer wall thereof may be provided with scale marks for expressing the corresponding volume.
As shown in fig. 1, the front end of the needle cylinder 2 is connected to the assembling section 108, and preferably, the front end of the needle cylinder 2 is in a male luer structure 9, and the assembling section 108 is in a female luer structure, so that the use and the disassembly are convenient.
As shown in fig. 4 and 5, the rear end of cylinder 2 is equipped with two parallel arrangement's that extend towards the circumference outside of cylinder 2 baffle 3, is equipped with cardboard 4 between two baffles 3, and cardboard 4 inserts to cylinder 2 in and runs through cylinder 2 from between two baffles 3, the side of cardboard 4 is equipped with 3 assorted protrusion 6 of baffle, and protrusion 6 can adopt a plurality of bumps or sand grip etc. for when making cardboard 4 slide between two baffles 3, produce certain damping effect, prevent that cardboard 4 from producing relative movement with baffle 3 under the action of gravity, influence the use experience. The normal state of the clamping plate 4 is partially positioned outside the needle cylinder 2 and partially inside the needle cylinder 2, which is convenient for a user to operate. Preferably, the side of the card board 4 is provided with an arrow indicator mark for indicating the moving direction of the card board 4 by an operator.
As shown in fig. 5-7, the middle of the clamping plate 4 is provided with a hollow 10, the hollow 10 is formed by overlapping a circular hole and a strip-shaped hole, the circular hole is matched with the inner hole of the needle cylinder 2 in size, the strip-shaped hole extends outwards along the radial direction of the circular hole, and the width of the strip-shaped hole is matched with the outer diameter of the core rod 1.
The front end of the core rod 1 is provided with a sealing ring 8, and the sealing ring 8 can be made of rubber and is in interference and sealed fit with the inside of the needle cylinder 2. In implementation, a pie-shaped assembling structure can be arranged at the front end of the core rod 1 and assembled with the sealing ring 8, and the core rod 1 can keep an assembling state and is not separated from the core rod 1 when the core rod 1 performs push-pull action. In order to facilitate the determination of the position of the sealing ring 8, the sealing ring 8 is preferably black. The front end of the sealing ring 8 is preferably tapered to improve the sealing effect.
A plurality of clamping grooves 7 are formed in the core rod 1 at intervals in the length direction, and the width of each clamping groove 7 is matched with the thickness of the corresponding clamping plate 4. When core bar 1 carries out the push-and-pull action, the round hole of fretwork 10 is coaxial with the hole of cylinder 2, do not influence core bar 1 and slide in cylinder 2, and when locking state, the bar hole of fretwork 10 is absorbed in to corresponding draw-in groove 7, and carry out spacingly through the damping effect of protrusion 6, thereby lock core bar 1, core bar 1 can not slide again, under sealing washer 8's effect, form the negative pressure in cylinder 2, can effectively alleviate operator's hand fatigue, the tired medical risk who brings of operator has been reduced simultaneously.
As shown in fig. 5 and 6, in order to save material, reduce weight and improve operator's suitability, it is preferable that the cross section of the needle cylinder 2 has a cross rib structure, and the locking groove 7 is provided on a flange of the cross rib structure.
When the injector is used, an operator pushes the push handle to realize the pressurizing and pushing action of a conventional injector, and the sealing ring is tightly matched with the inner wall of the needle cylinder to play a sealing role on the premise of meeting the requirement of relative sliding. In a normal state when the core rod performs the push-pull action, the circular hole in the hollow part is coaxial with the inner hole of the needle cylinder and has a similar outer diameter, so that the sliding of the core rod in the needle cylinder is not influenced; after the cardboard moved a certain position, the cardboard removed along the draw-in groove on the core bar, locked the core bar through the cooperation of cardboard and draw-in groove, and the core bar can not slide this moment to form the negative pressure in the space of cylinder and sealing washer structure (being inside the cylinder).
When a physician uses an existing negative pressure biopsy needle to take a biopsy, for example, in a needle aspiration cytology examination of thyroid or breast, the physician generally needs to stabilize the syringe with one hand, hold the push handle with the other hand, and then forcibly pull the push handle outward to generate a negative pressure to aspirate a tissue sample. The operation easily causes the fatigue of doctors, increases the difficulty of the operation and reduces the work efficiency of the doctors. This embodiment locks the core bar through the cooperation of cardboard with the draw-in groove, no longer relies on operator's manually operation to restrict the core bar displacement to laborsaving, stable effect, simple structure, convenient to use not only can effectively alleviate operator's hand fatigue moreover and feel, have reduced the tired medical risk who brings of operator simultaneously.
This embodiment is through prefabricated negative pressure, and steerable switch during the sample releases the negative pressure in real time according to the demand, reaches the purpose of suction cell tissue. Meanwhile, the observation section with the amplification function can effectively judge the sampling amount and ensure that the sampling amount does not excessively pollute the sampling. After the sampling is completed, other syringes do not need to be connected to release the sampling, so the operation is simple and convenient, the control is accurate, the sampling effect does not depend on the clinical experience of an operator, the sampling quantity can be ensured not to be too much or too little, the sampling quality is ensured, the sampling efficiency and the diagnosis accuracy can be effectively improved, the pain of a patient is relieved, and the repeated sampling is avoided to a certain extent.
The method of use of this example is as follows: the negative pressure device is connected with the needle seat with the outer needle, and a switch in the needle seat is closed to isolate the negative pressure device from the atmospheric pressure; then, negative pressure is prefabricated through a negative pressure device, the outer needle is inserted into a target position, the opening and closing structure is opened through the switch, the negative pressure is released, cell tissues are sucked into the needle tube of the outer needle, the negative pressure can be opened or closed through the switch in real time at the moment, the sampling amount is controlled, and the needle tube is pulled out after the needle tube observation section determines that a sampling target is reached. And (4) utilizing the positive pressure of a negative pressure device to push out a sample and transfer pathological analysis.
Claims (10)
1. A negative pressure suction biopsy needle comprises a negative pressure device, an outer needle and a needle seat, wherein the outer needle is of a hollow structure, and the negative pressure device is communicated with the outer needle through the needle seat; the method is characterized in that: the needle base is provided with a switch for opening and closing a communication channel between the negative pressure device and the outer needle.
2. The negative pressure aspiration biopsy needle of claim 1, wherein: the switch comprises a button inserted into the needle base from the outside of the needle base and an elastic opening and closing structure positioned in the needle base, two ends of the elastic opening and closing structure are respectively communicated with the negative pressure device and the outer needle, and a gap is formed in the middle of the elastic opening and closing structure; when the button is loosened, the gap in the middle of the elastic opening and closing structure is kept closed, and when the button is pressed down, the button presses the elastic opening and closing structure to enable the gap to deform and then expand to form a channel.
3. The negative pressure aspiration biopsy needle of claim 1 or 2, wherein: the needle file is including the linkage segment, observe section, handheld section and the assembly segment that link together in proper order, the linkage segment and outer needle rigid coupling, assembly segment and negative pressure ware detachable connection.
4. The negative pressure aspiration biopsy needle of claim 3, wherein: the negative pressure device comprises a core rod and a needle cylinder, the needle cylinder is sleeved on the outer side of the core rod, and a pushing handle is arranged at the rear end of the core rod;
the front end of the needle cylinder is connected with the assembling section, the rear end of the needle cylinder is provided with two parallel baffles extending towards the circumferential outer side of the needle cylinder, a clamping plate is arranged between the two baffles and inserted into the needle cylinder, and the side face of the clamping plate is provided with a protruding piece matched with the baffles;
the middle part of the clamping plate is provided with a hollow, the core rod penetrates through the hollow, the hollow is formed by overlapping a circular hole and a strip-shaped hole, the strip-shaped hole extends outwards along the radial direction of the circular hole, the circular hole is matched with the inner hole of the needle cylinder in size, and the width of the strip-shaped hole is matched with the outer diameter of the core rod;
the front end of the core rod is provided with a sealing ring; the core bar is provided with a plurality of clamping grooves at intervals along the length direction, and the width of each clamping groove is matched with the thickness of each clamping plate.
5. The negative suction biopsy needle of claim 4, wherein: the cross section of the core bar is of a cross rib structure, and the clamping groove is formed in the flange of the cross rib structure.
6. The negative pressure aspiration biopsy needle of claim 3, wherein: the switch is arranged on the handheld section of the needle base.
7. The negative pressure aspiration biopsy needle of claim 3, wherein: the observation section is made of transparent materials, or a plurality of observation windows made of transparent materials are arranged on the observation section.
8. The negative pressure aspiration biopsy needle of claim 3, wherein: the front end of the needle cylinder is of an external luer structure, and the assembling section is of an internal luer structure.
9. The negative pressure aspiration biopsy needle of claim 3, wherein: the needle cylinder is made of transparent materials, and scale marks are arranged on the needle cylinder.
10. The negative pressure aspiration biopsy needle of claim 1 or 2, wherein: the needle point of the outer needle is provided with an enhanced ultrasonic development mark.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211435332.3A CN115813453A (en) | 2022-11-16 | 2022-11-16 | Negative pressure suction biopsy needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211435332.3A CN115813453A (en) | 2022-11-16 | 2022-11-16 | Negative pressure suction biopsy needle |
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| Publication Number | Publication Date |
|---|---|
| CN115813453A true CN115813453A (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211435332.3A Pending CN115813453A (en) | 2022-11-16 | 2022-11-16 | Negative pressure suction biopsy needle |
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| Country | Link |
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| CN (1) | CN115813453A (en) |
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| CN113144320A (en) * | 2021-05-21 | 2021-07-23 | 端源医疗科技无锡有限公司 | Automatic flow stopping hemodialysis remaining needle and using method thereof |
| CN113974700A (en) * | 2021-11-11 | 2022-01-28 | 郑州大学第一附属医院 | Integrated tumor inspection sampling and inspection device |
| CN114948131A (en) * | 2022-06-09 | 2022-08-30 | 管晴 | Multifunctional thyroid puncture device |
-
2022
- 2022-11-16 CN CN202211435332.3A patent/CN115813453A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101716087A (en) * | 2009-12-29 | 2010-06-02 | 余小蒙 | Dispensable continuous negative-pressure puncture outfit |
| CN202801683U (en) * | 2012-10-13 | 2013-03-20 | 楚丽香 | Novel pulmonary tuberculosis device |
| CN105193461A (en) * | 2015-10-30 | 2015-12-30 | 中国人民解放军第二军医大学 | Endoscopic ultrasonography puncture needle vacuum extractor device with quantitative control negative pressure |
| CN105662485A (en) * | 2016-03-28 | 2016-06-15 | 西南医科大学附属医院 | Pressure-readable negative-pressure puncture device |
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Application publication date: 20230321 |