CN112401987B - Endoscope puncture needle capable of quantitatively controlling negative pressure - Google Patents
Endoscope puncture needle capable of quantitatively controlling negative pressure Download PDFInfo
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- CN112401987B CN112401987B CN202011219969.XA CN202011219969A CN112401987B CN 112401987 B CN112401987 B CN 112401987B CN 202011219969 A CN202011219969 A CN 202011219969A CN 112401987 B CN112401987 B CN 112401987B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3478—Endoscopic needles, e.g. for infusion
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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
- A61B10/0283—Pointed or sharp biopsy instruments with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe
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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
- A61B10/04—Endoscopic instruments
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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
- A61B10/04—Endoscopic instruments
- A61B2010/045—Needles
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Abstract
The invention discloses an endoscope puncture needle capable of quantitatively controlling negative pressure, which belongs to the technical field of medical instruments and comprises a needle cylinder, wherein a main piston is sleeved in the needle cylinder, and the end surface of the main piston is fixedly connected with one end of a first threaded rod. According to the invention, the designed main piston, the auxiliary piston, the first threaded cylinder, the first rotating shaft, the second rotating shaft, the first gear, the second gear, the pressure relief channel, the torsion wheel, the third threaded cylinder, the third threaded rod and the second threaded cylinder are matched with each other, so that fast adjustment and fine adjustment can be carried out, quantitative pressure regulation is more accurate, a gesture of pulling the main piston is always kept in the process of extracting the focus tissues of a patient by using negative pressure, the operation is more stable, fine adjustment of a negative pressure value is carried out according to actual conditions, so that the negative pressure required in actual operation is obtained, the focus tissues are extracted better, and the focus tissues of the patient in the needle cylinder can be prevented from being moved out of the needle cylinder under the action of thrust.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an endoscope puncture needle capable of quantitatively controlling negative pressure.
Background
The puncture needle is a medical instrument for sampling and injecting tissues of various organs such as kidney, liver, lung, mammary gland, thyroid gland, prostate, pancreas, testis, uterus, ovary, body surface and the like in minimally invasive surgery.
The puncture under the endoscope has the advantages of high precision, high safety, little pain of patients, outstanding diagnosis and treatment effect and the like, for example, the ' negative pressure puncture needle cylinder with adjustable pressure ' (patent number: CN 105877814B) disclosed by the Chinese patent network, the technical problem solved by the patent is that the existing puncture needle mainly uses a common injector to puncture, the operation is laborious, an operator needs to continuously keep track of whether the negative pressure value of the puncture needle reaches the standard or not while puncturing, the operator cannot concentrate on the focus to locate, the puncture is affected by abnormal conditions such as injector shake and the like during the operation, the negative pressure of the conventional puncture needle is unstable, the tissue or cell suction at the puncture position is not ideal easily caused, the requirement of clinical pathological smear examination is difficult to be met, the repeated puncture is easy to generate inflammatory reaction and patient's uncomfortable reaction, the bleeding of the operation part and the local transfer of tumor or cancer cell are caused, and the patent solves the technical problem through the designed structures of a piston rod, a pressure spring, a fixture block limiting strip, an inclined plate and the like, however, the patent still has some defects, the piston rod still adopts the prior horizontal pulling mode to regulate and control the negative pressure energy inside the needle cylinder, the pulling force is required to be provided for the piston rod all the time in the process of extracting the lesion tissues of the patient, the process is unstable, the fingers of medical staff are easy to feel sore after the sampling is finished, and can not be finely adjusted according to the actual treatment requirement, the precision is low, and when the negative pressure value in the syringe is higher, the pulling force acting on the piston rod is slowly removed, so that the focus tissues of the patient are easily moved out from the needle cylinder under the action of the pushing force, further, cross-infection is easily caused, and therefore, there is a need in the market to solve the above-mentioned problems by providing an endoscopic puncture needle capable of quantitatively controlling negative pressure.
Disclosure of Invention
The invention aims to: in order to solve the problem that the piston rod still adopts the mode of horizontal pulling in the past to regulate and control the negative pressure energy inside the needle cylinder, need provide the pulling force for the piston rod constantly at the in-process of extracting patient's focus tissue, the process is unstable, often after the sample is ended, the sore condition appears easily in medical personnel's finger, and can't finely tune according to actual treatment needs, the precision is lower, and when the inside negative pressure value of needle cylinder was on the high side, the pulling force of acting on the piston rod was slowly removed mostly, patient's focus tissue that makes easily receives the thrust effect and shifts out in by the needle cylinder, and then the problem of cross infection easily causes, and the endoscope pjncture needle that can the quantitative control negative pressure that provides.
In order to achieve the purpose, the invention adopts the following technical scheme:
an endoscope puncture needle capable of quantitatively controlling negative pressure comprises a needle cylinder, a main piston is sleeved in the needle cylinder, the end face of the main piston is fixedly connected with one end of a first threaded rod, the surface of the first threaded rod is in threaded connection with a first threaded cylinder, the surface of the first threaded cylinder is sleeved with a first bearing, the first bearing is clamped at the inner end of the needle cylinder in a clamping manner, the surface of the first threaded cylinder is fixedly connected with a first gear, the surface of the first gear is meshed with a second gear, a first connecting hole is formed in the position, corresponding to the first threaded rod, of the end face of the main piston, an auxiliary piston is sleeved in the first connecting hole, a wall groove is formed in the end face of the needle cylinder, a sealing plug is sleeved in the wall groove, a second connecting hole is formed in the bottom of the inner side of the wall groove, and a third threaded cylinder is connected to one side, far away from the second connecting hole, of the bottom of the inner side of the wall groove, the third threaded barrel is connected with a third threaded rod in an internal thread mode, one end, far away from the first threaded barrel, of the third threaded rod is fixedly connected with one end of a connecting rod, the connecting rod is located in a third connecting hole formed in the surface of the needle cylinder, the other end of the connecting rod is fixedly connected with a torsion wheel, and a pressure relief channel is formed in the surface of the connecting rod.
As a further description of the above technical solution:
the second gear is fixedly connected to the surface of the first rotating shaft, the surface of the first rotating shaft is sleeved with a first bearing, the first bearing is clamped on the side end face of the finger handle, and the finger handle is fixedly connected to the surface of the needle cylinder.
As a further description of the above technical solution:
the end face of the first threaded rod is provided with a through hole corresponding to the position of the first connecting hole, a second threaded cylinder is sleeved in the through hole, and the end part of the second threaded cylinder is fixedly connected with one face, close to the auxiliary piston, of the second threaded cylinder.
As a further description of the above technical solution:
the inside threaded connection of second threaded cylinder has the second threaded rod, the one end fixedly connected with second pivot that the second threaded rod kept away from the second threaded cylinder, the third bearing has been cup jointed on the surface of second pivot, the inboard tip of through-hole of third bearing joint.
As a further description of the above technical solution:
first anti-skidding membrane has been cup jointed on the surface of first thread section of thick bamboo, the second anti-skidding membrane has been cup jointed on the surface of first pivot, the third proofing synovial membrane has been cup jointed on the surface of second pivot.
As a further description of the above technical solution:
the surface of the connecting rod is sleeved with a sealing ring, the sealing ring is positioned between the torsion wheel and the needle cylinder, and the cross section of the pressure relief channel in front view is of an inverted U-shaped structure.
As a further description of the above technical solution:
the shaft diameter of the first gear is larger than that of the second gear, and the ratio of the shaft diameter of the first gear to the shaft diameter of the second gear is not less than 3: 1.7.
As a further description of the above technical solution:
the surface of the needle cylinder is provided with a pressure gauge, and the bottom end of the pressure gauge is communicated with the top of the inner side of the wall groove.
As a further description of the above technical solution:
the surface of the needle cylinder is sleeved with a puncture needle in an inserting mode, and the surface of the puncture needle is provided with scale marks.
As a further description of the above technical solution:
the radius ratio of the round surface of the main piston to the round surface of the auxiliary piston is 4:1, and the radius of the round hole in side view of the first connecting hole is the same as that of the round hole in side view of the through hole.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the designed main piston, the auxiliary piston, the first threaded cylinder, the first rotating shaft, the second rotating shaft, the first gear, the second gear, the pressure relief channel, the torsion wheel, the third threaded cylinder, the third threaded rod and the second threaded cylinder are matched with each other, so that fast adjustment and fine adjustment can be carried out, quantitative pressure regulation is more accurate, a gesture of pulling the main piston is always kept in the process of extracting the focus tissues of a patient by using negative pressure, the operation is more stable, fine adjustment of a negative pressure value is carried out according to actual conditions, so that the negative pressure required in actual operation is obtained, the focus tissues are extracted better, and the focus tissues of the patient in the needle cylinder can be prevented from being moved out of the needle cylinder under the action of thrust.
2. In the invention, by designing the needle cylinder, the main piston, the first threaded cylinder, the first bearing, the first threaded rod and the main piston, because the first bearing is used as a connecting medium between the needle cylinder and the first threaded cylinder, the first threaded cylinder can perform stable rotation action in the needle cylinder when being acted by torsion, and in the process, the first threaded rod can drive the main piston to perform piston motion in the needle cylinder under the mutual action of the torsion and thread occlusion force, and can enable the interior of the needle cylinder to form a negative pressure state when the main piston moves towards the direction far away from the puncture needle, so that the effect of negative pressure drainage can be achieved, the traditional transverse tension is replaced by the tension converted by the first threaded cylinder and the first threaded rod, and the main piston can not automatically move towards the puncture needle under the action of negative pressure at the moment that the tension applied to the main piston is removed, the quantitative pressure regulation is more accurate, the gesture of pulling the main piston is always kept in the process of extracting the lesion tissues of the patient by utilizing the negative pressure, and the operation is more stable.
3. According to the invention, through the designed first gear, the second gear, the first rotating shaft and the second bearing, the first rotating shaft is twisted to rotate in the second bearing, because the first gear and the second gear are used as connecting media between the first rotating shaft and the first threaded cylinder, and the shaft diameter of the first gear is larger than that of the second gear, the first threaded cylinder can be driven to reversely rotate in the process of twisting the first rotating shaft, the rotating speed is lower than that of the first rotating shaft, and the first threaded cylinder is driven to perform deceleration motion through the first rotating shaft in the end period of quantitative pressure regulation through the main piston, so that the fine adjustment effect can be realized, the accuracy of quantitative pressure regulation can be further improved, and the medical level of medical personnel can be improved to a certain extent through improving the accuracy of quantitative control negative pressure.
4. According to the invention, through the designed through hole, the first connecting hole, the auxiliary piston, the second threaded cylinder, the second rotating shaft, the second threaded rod and the third bearing, the second rotating shaft is twisted to rotate in the third bearing, so that the second threaded rod can be driven to rotate in the second threaded cylinder, the second threaded cylinder can drive the auxiliary piston to perform piston motion in the through hole and the first connecting hole under the mutual action of torsion and thread biting force, and because the end surface radius of the auxiliary piston is smaller than that of the main piston, and because the tissue of the extracted focus has access to the pre-determined negative pressure value, the fine adjustment action of the negative pressure value is performed according to the actual situation, so that the negative pressure required in the actual operation can be obtained, and the focus tissue can be better extracted.
5. According to the invention, through the wall groove, the sealing plug, the second connecting hole, the third threaded hole, the second threaded rod, the connecting rod, the third connecting hole and the torsion wheel, the torsion wheel drives the third threaded rod to rotate in the third threaded cylinder through the connecting rod, so that the position relation between the connecting rod and the wall groove can be regulated and controlled, when one port of the pressure relief channel is positioned in the wall groove and the other port is positioned above the needle cylinder, the pressure relief can be carried out to reduce the negative pressure value in the needle cylinder, the negative pressure capability in the needle cylinder can be weakened without regulating the main piston and the auxiliary piston, and the focus tissues of a patient in the needle cylinder can be prevented from moving out of the needle cylinder under the thrust action.
6. According to the invention, through the designed first anti-slip membrane, second anti-slip membrane and third anti-slip membrane, the friction force of the surfaces of the first threaded cylinder, the first rotating shaft and the second rotating shaft is respectively improved, so that the operation process of medical personnel can be more stable when the negative pressure energy in the needle cylinder is regulated and controlled, through the designed pressure gauge, the pressure gauge is communicated with the inside of the needle cylinder through the wall groove and the second connecting hole and is used for measuring the pressure intensity in the needle cylinder, when the first threaded cylinder, the first rotating shaft, the second rotating shaft and the torsion wheel are operated, the pressure gauge is taken as a reference, through the designed puncture needle and the scale lines, the scale lines are arranged on the puncture needle, and the depth of the puncture needle entering the lesion tissues of a patient can be conveniently observed by the medical personnel.
Drawings
FIG. 1 is a schematic perspective view of an endoscopic puncture needle capable of quantitatively controlling negative pressure according to the present invention;
FIG. 2 is a schematic perspective view of a first threaded rod adjusting mechanism in an endoscopic puncture needle capable of quantitatively controlling negative pressure according to the present invention;
FIG. 3 is a schematic perspective view of a second threaded rod adjusting mechanism in an endoscopic puncture needle capable of quantitatively controlling negative pressure according to the present invention;
FIG. 4 is a schematic perspective view of a first threaded rod of an endoscopic needle capable of quantitatively controlling negative pressure according to the present invention;
FIG. 5 is a schematic perspective view of a main piston of the endoscopic needle capable of quantitatively controlling negative pressure according to the present invention;
FIG. 6 is a schematic cross-sectional view of a syringe in an endoscopic needle capable of quantitatively controlling a negative pressure according to the present invention;
fig. 7 is a schematic view of an enlarged structure at a position a of the endoscopic puncture needle capable of quantitatively controlling negative pressure according to the present invention.
Illustration of the drawings:
1. a needle cylinder; 2. a primary piston; 3. a first threaded rod; 4. a first bearing; 5. a first threaded barrel; 6. a first gear; 7. a second gear; 8. a first rotating shaft; 9. a second bearing; 10. a first slip-resistant film; 11. a second slip resistant film; 12. a finger handle; 13. a through hole; 14. a first connection hole; 15. a secondary piston; 16. a second threaded barrel; 17. a second threaded rod; 18. a second rotating shaft; 19. a third bearing; 20. a third prevention sliding film; 21. a wall groove; 22. a sealing plug; 23. a second connection hole; 24. a third threaded barrel; 25. a third threaded rod; 26. a connecting rod; 27. a third connection hole; 28. a seal ring; 29. a torsion wheel; 30. a pressure relief channel; 31. a pressure gauge; 32. Puncturing needle; 33. scale lines are marked.
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.
Referring to fig. 1-7, the present invention provides a technical solution: an endoscope puncture needle capable of quantitatively controlling negative pressure comprises a needle cylinder 1, a main piston 2 is sleeved in the needle cylinder 1, the end face of the main piston 2 is fixedly connected with one end of a first threaded rod 3, a first threaded cylinder 5 is in threaded connection with the surface of the first threaded rod 3, a first bearing 4 is sleeved on the surface of the first threaded cylinder 5, the first bearing 4 is clamped at the inner side end of the needle cylinder 1, the piston, the first threaded cylinder 5, the first bearing 4, the first threaded rod 3 and the main piston 2 are designed, and the first bearing 4 is used as a connecting medium between the needle cylinder 1 and the first threaded cylinder 5, so that the first threaded cylinder 5 can perform stable rotation in the needle cylinder 1 when being subjected to torsion, and in the process, the first threaded rod 3 can drive the main piston 2 to perform piston movement in the needle cylinder 1 under the interaction of the torsion and thread occlusion force, and when the main piston 2 moves towards the direction far away from the puncture needle 32, the inner part of the needle cylinder 1 can form a negative pressure state, so that the effect of negative pressure drainage can be achieved, the pulling force converted by the first threaded cylinder 5 and the first threaded rod 3 is utilized to replace the prior transverse pulling force, so that the main piston 2 can not move towards the direction of the puncture needle 32 automatically under the action of negative pressure at the moment of removing the pulling force applied to the main piston 2, the quantitative pressure regulation is more accurate, the gesture of pulling the main piston 2 is always kept in the process of extracting the lesion tissues of a patient by utilizing the negative pressure, the operation is more stable, the surface of the first threaded cylinder 5 is fixedly connected with a first gear 6, the surface of the first gear 6 is meshed with a second gear 7, the position, corresponding to the first threaded rod 3, of the end face of the main piston 2 is provided with a first connecting hole 14, a secondary piston 15 is sleeved in the first connecting hole 14, and the first gear 6 is designed, The second gear 7, the first rotating shaft 8 and the second bearing 9, the first rotating shaft 8 is twisted to rotate in the second bearing 9, because the first gear 6 and the second gear 7 are used as connecting media between the first rotating shaft 8 and the first threaded cylinder 5, and the shaft diameter of the first gear 6 is larger than that of the second gear 7, the first threaded cylinder 5 can be driven to rotate reversely in the process of twisting the first rotating shaft 8, the rotating speed is lower than that of the first rotating shaft 8, the first threaded cylinder 5 is driven to perform deceleration motion through the first rotating shaft 8 in the end period of quantitative pressure regulation through the main piston 2, the fine adjustment effect can be realized, the accuracy of quantitative pressure regulation can be further improved, the medical level of medical personnel can be improved to a certain extent through improving the accuracy of quantitative control negative pressure, the end face of the needle cylinder 1 is provided with a wall groove 21, a sealing plug 22 is sleeved in the wall groove 21, and the bottom of the inner side of the wall groove 21 is provided with a second connecting hole 23, one side of the bottom of the inner side of the wall groove 21, which is far away from the second connecting hole 23, is connected with a third threaded cylinder 24 in an embedded manner, the second threaded cylinder 18 is twisted to rotate in the third bearing 19 through the designed through hole 13, the first connecting hole 14, the secondary piston 15, the second threaded cylinder 16, the second rotating shaft 18, the second threaded rod 17 and the third bearing 19, so that the second threaded rod 17 can be driven to rotate in the second threaded cylinder 16, the secondary piston 15 can be driven to perform piston motion in the through hole 13 and the first connecting hole 14 under the mutual action of torsion and thread biting force, because the end surface radius of the secondary piston 15 is smaller than the end surface radius of the main piston 2, and because the tissue of the extracted focus has access to the predetermined negative pressure value, the fine adjustment action of the negative pressure value is performed according to the actual situation, so as to obtain the negative pressure required in the actual operation and make it better extract the focal tissue, the third threaded cylinder 24 is connected with a third threaded rod 25 by internal thread, one end of the third threaded rod 25 far away from the first threaded cylinder 5 is fixedly connected with one end of a connecting rod 26, the connecting rod 26 is positioned in a third connecting hole 27 formed on the surface of the syringe 1, the other end of the connecting rod 26 is fixedly connected with a torsion wheel 29, and the surface of the connecting rod 26 is provided with a pressure relief channel 30, through the designed wall groove 21, the sealing plug 22, the second connecting hole 23, the third threaded hole, the second threaded rod 17, the connecting rod 26, the third connecting hole 27 and the torsion wheel 29, the torsion wheel 29 drives the third threaded rod 25 to rotate in the third threaded cylinder 24 by the connecting rod 26, thereby regulating and controlling the position relation between the connecting rod 26 and the wall groove 21, when one port of the pressure relief channel 30 is positioned in the wall groove 21, the other port is positioned above the needle cylinder 1, so that the pressure can be released to reduce the negative pressure value in the needle cylinder 1, the negative pressure capability in the needle cylinder 1 can be weakened without adjusting the main piston 2 and the auxiliary piston 15, and the lesion tissues of the patient in the needle cylinder 1 can be prevented from moving out of the needle cylinder 1 under the action of thrust.
Specifically, as shown in fig. 2, the second gear 7 is fixedly connected to the surface of the first rotating shaft 8, the first bearing 4 is sleeved on the surface of the first rotating shaft 8, the first bearing 4 is clamped on the side end face of the finger handle 12, and the finger handle 12 is fixedly connected to the surface of the syringe 1.
Specifically, as shown in fig. 4, a through hole 13 is formed in the end surface of the first threaded rod 3 corresponding to the first connection hole 14, a second threaded cylinder 16 is sleeved in the through hole 13, and the end of the second threaded cylinder 16 is fixedly connected with a surface close to the secondary piston 15.
Specifically, as shown in fig. 3, the second threaded cylinder 16 is connected to the second threaded rod 17 through internal threads, one end of the second threaded rod 17 away from the second threaded cylinder 16 is fixedly connected to a second rotating shaft 18, a third bearing 19 is sleeved on the surface of the second rotating shaft 18, and the third bearing 19 is clamped at the end portion inside the through hole 13.
Specifically, as shown in fig. 2, first slipmembrane 10 has been cup jointed on the surface of first screw section of thick bamboo 5, second slipmembrane 11 has been cup jointed on the surface of first pivot 8, third slipmembrane 20 has been cup jointed on the surface of second pivot 18, through the first slipmembrane 10 of design, second slipmembrane 11 and third slipmembrane 20, first slipmembrane 10, second slipmembrane 11 and third slipmembrane 20 are used for improving first screw section of thick bamboo 5 respectively, the frictional force on first pivot 8 and second pivot 18 surface for medical personnel's operation process can be more steady when regulating and controlling the inside negative pressure energy of syringe 1.
Specifically, as shown in fig. 7, a sealing ring 28 is sleeved on the surface of the connecting rod 26, the sealing ring 28 is located between the torsion wheel 29 and the syringe 1, and the front cross-sectional shape of the pressure release channel 30 is an inverted U-shaped structure.
Specifically, as shown in fig. 2, the shaft diameter of the first gear 6 is larger than the shaft diameter of the second gear 7, and the ratio of the shaft diameter of the first gear 6 to the shaft diameter of the second gear 7 is not less than 3: 1.7.
Specifically, as shown in fig. 1, a pressure gauge 31 is provided on the surface of the cylinder 1, and the bottom end of the pressure gauge 31 communicates with the top of the inner side of the wall groove 21, and by designing the pressure gauge 31, the pressure gauge 31 communicates with the inside of the cylinder 1 through the wall groove 21 and the second connection hole 23 for measuring the pressure inside the cylinder 1, and the pressure gauge 31 is used as a reference when operating the first threaded cylinder 5, the first rotating shaft 8, the second rotating shaft 18 and the torsion wheel 29.
Specifically, as shown in fig. 1, a puncture needle 32 is inserted into the surface of the syringe 1 in a plug-in manner, and the surface of the puncture needle 32 is provided with scale marks 33, and the scale marks 33 are arranged on the puncture needle 32 through the designed puncture needle 32 and scale marks 33, so that medical staff can observe the depth of the puncture needle 32 entering into the lesion tissue of the patient conveniently.
Specifically, as shown in fig. 2, the ratio of the radius of the circular surface of the master piston 2 to the radius of the circular surface of the slave piston 15 is 4:1, and the radius of the circular hole of the first connection hole 14 in side view is the same as the radius of the circular hole of the through hole 13 in side view.
The working principle is as follows: when in use, firstly, the negative pressure value in the needle cylinder 1 is regulated and controlled through the main piston 2, because the first bearing 4 is used as a connecting medium between the needle cylinder 1 and the first thread cylinder 5, the first thread cylinder 5 can perform stable rotation action in the needle cylinder 1 when being under the action of torsion, and in the process, the first thread rod 3 can drive the main piston 2 to perform piston motion in the needle cylinder 1 under the mutual action of the torsion and thread occlusion force, and the negative pressure state can be formed in the needle cylinder 1 when the main piston 2 moves towards the direction far away from the puncture needle 32, so that the effect of negative pressure drainage can be achieved, the original transverse tension is replaced by the tension converted by the first thread cylinder 5 and the first thread rod 3, and the main piston 2 can not move towards the puncture needle 32 under the negative pressure action at the moment of removing the tension applied on the main piston 2, the quantitative pressure regulation is more accurate, the gesture of pulling the main piston 2 is always kept in the process of extracting the focus tissues of a patient by using negative pressure, the operation is more stable, then the negative pressure value in the needle cylinder 1 is regulated and controlled by the auxiliary piston 15, the first rotating shaft 8 is twisted to rotate in the second bearing 9, the first rotating shaft 8 and the first threaded cylinder 5 are connected by the first gear 6 and the second gear 7, the shaft diameter of the first gear 6 is larger than that of the second gear 7, the first threaded cylinder 5 can be driven to reversely rotate in the process of twisting the first rotating shaft 8, the rotating speed is lower than that of the first rotating shaft 8, the first threaded cylinder 5 is driven to decelerate by the first rotating shaft 8 in the tail period of quantitative pressure regulation through the main piston 2, the fine adjustment effect can be realized, and the accuracy of quantitative pressure regulation can be further improved, the medical level of medical staff can be improved to a certain extent by improving the precision of quantitative control negative pressure, the negative pressure energy in the needle cylinder 1 is regulated in real time according to the actual sampling condition, the second rotating shaft 18 is twisted to rotate in the third bearing 19, so that the second threaded rod 17 can be driven to rotate in the second threaded cylinder 16, the second threaded cylinder 16 can drive the auxiliary piston 15 to perform piston motion in the through hole 13 and the first connecting hole 14 under the mutual action of torsion and thread biting force, because the end surface radius of the auxiliary piston 15 is smaller than that of the main piston 2, and because the tissue of the extracted focus comes in and goes out with the pre-determined negative pressure value, the fine adjustment action of the negative pressure value is performed according to the actual condition, so as to obtain the negative pressure required in the actual operation, so that the focus tissue can be extracted better, when the negative pressure value in the needle cylinder 1 is too high, the twisting torsion wheel 29 drives the third threaded rod 25 to rotate in the third threaded cylinder 24 through the connecting rod 26, so that the position relation between the connecting rod 26 and the wall groove 21 can be regulated, when one port of the pressure relief channel 30 is positioned in the wall groove 21 and the other port is positioned above the needle cylinder 1, the pressure can be relieved at the moment to reduce the negative pressure value in the needle cylinder 1, the negative pressure capacity in the needle cylinder 1 can be weakened without adjusting the main piston 2 and the auxiliary piston 15, and the focus tissues of a patient in the needle cylinder 1 can be prevented from moving out of the needle cylinder 1 under the thrust action.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (5)
1. An endoscope puncture needle capable of quantitatively controlling negative pressure comprises a needle cylinder (1) and is characterized in that a main piston (2) is sleeved in the needle cylinder (1), the end face of the main piston (2) is fixedly connected with one end of a first threaded rod (3), the surface of the first threaded rod (3) is in threaded connection with a first threaded cylinder (5), a first bearing (4) is sleeved on the surface of the first threaded cylinder (5), the first bearing (4) is clamped at the inner end of the needle cylinder (1), a first gear (6) is fixedly connected with the surface of the first threaded cylinder (5), a second gear (7) is meshed on the surface of the first gear (6), the diameter of the first gear (6) is larger than that of the second gear (7), and a first connecting hole (14) is formed in the position, corresponding to the first threaded rod (3), of the end face of the main piston (2), an auxiliary piston (15) is sleeved in the first connecting hole (14), a wall groove (21) is formed in the end face of the needle cylinder (1), a sealing plug (22) is sleeved in the wall groove (21), a second connecting hole (23) is arranged at the bottom of the inner side of the wall groove (21), a third threaded cylinder (24) is connected with the bottom of the inner side of the wall groove (21) at one side far away from the second connecting hole (23) in an embedded manner, a third threaded rod (25) is connected with the inner thread of the third threaded cylinder (24), one end of the third threaded rod (25) far away from the first threaded cylinder (5) is fixedly connected with one end of the connecting rod (26), and the connecting rod (26) is positioned in a third connecting hole (27) formed on the surface of the needle cylinder (1), the other end of the connecting rod (26) is fixedly connected with a torsion wheel (29), and the surface of the connecting rod (26) is provided with a pressure relief channel (30); the surface of the needle cylinder (1) is sleeved with a puncture needle (32) in an inserting manner, and the surface of the puncture needle (32) is provided with scale marks (33); a through hole (13) is formed in the end face of the first threaded rod (3) corresponding to the position of the first connecting hole (14), a second threaded cylinder (16) is sleeved in the through hole (13), and the end part of the second threaded cylinder (16) is fixedly connected with one surface close to the auxiliary piston (15); the radius of the round hole of the side view of the first connecting hole (14) is the same as that of the round hole of the side view of the through hole (13); the ratio of the shaft diameter of the first gear (6) to the shaft diameter of the second gear (7) is not less than 3: 1.7; the ratio of the radius of the circular surface of the main piston (2) to the radius of the circular surface of the auxiliary piston (15) is 4: 1.
2. An endoscopic puncture needle capable of quantitatively controlling negative pressure according to claim 1, wherein the second gear (7) is fixedly connected to the surface of the first rotating shaft (8), the first bearing (4) is sleeved on the surface of the first rotating shaft (8), the first bearing (4) is clamped on the side end face of the finger grip (12), and the finger grip (12) is fixedly connected to the surface of the syringe (1).
3. An endoscope puncture needle capable of quantitatively controlling negative pressure according to claim 2, characterized in that the inner thread of the second threaded cylinder (16) is connected with a second threaded rod (17), one end of the second threaded rod (17) far away from the second threaded cylinder (16) is fixedly connected with a second rotating shaft (18), the surface of the second rotating shaft (18) is sleeved with a third bearing (19), and the third bearing (19) is clamped at the end part of the inner side of the through hole (13); the surface of the first threaded cylinder (5) is sleeved with a first anti-slip film (10), the surface of the first rotating shaft (8) is sleeved with a second anti-slip film (11), and the surface of the second rotating shaft (18) is sleeved with a third anti-slip film (20).
4. An endoscopic puncture needle capable of quantitatively controlling negative pressure according to claim 3, wherein the surface of the connecting rod (26) is sleeved with a sealing ring (28), the sealing ring (28) is positioned between the torsion wheel (29) and the needle cylinder (1), and the cross section of the pressure relief channel (30) in a front view is in an inverted U-shaped structure.
5. An endoscopic puncture needle capable of quantitatively controlling negative pressure according to claim 4, wherein the surface of the cylinder (1) is provided with a pressure gauge (31), and the bottom end of the pressure gauge (31) communicates with the top of the inside of the wall groove (21).
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| CN202011219969.XA CN112401987B (en) | 2020-11-05 | 2020-11-05 | Endoscope puncture needle capable of quantitatively controlling negative pressure |
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| CN202011219969.XA CN112401987B (en) | 2020-11-05 | 2020-11-05 | Endoscope puncture needle capable of quantitatively controlling negative pressure |
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| CN112401987B true CN112401987B (en) | 2021-12-24 |
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| CN113616867B (en) * | 2021-09-13 | 2023-09-01 | 嘉兴市第一医院 | Debridement drainage instrument for acute pancreatitis necrosis range |
| CN113952008B (en) * | 2021-12-23 | 2022-05-24 | 真健康（北京）医疗科技有限公司 | Cross-drive type puncture needle inserting mechanism and needle puncturing device |
| CN116200248B (en) * | 2023-01-29 | 2024-03-26 | 四川农业大学 | High-precision manual embryo picking device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204971369U (en) * | 2015-09-25 | 2016-01-20 | 周平 | Pathology department uses sample collection ware |
| CN106037891A (en) * | 2016-04-22 | 2016-10-26 | 河南科技大学第附属医院 | Tumor interventional therapy device |
| CN206641894U (en) * | 2016-12-29 | 2017-11-17 | 张纯 | A kind of blood internal medicine bone marrow aspiration device |
| CN209091561U (en) * | 2018-07-27 | 2019-07-12 | 吉林大学第一医院 | Puncture needle for cardiac surgery |
| CN111036318A (en) * | 2019-12-30 | 2020-04-21 | 中国大冢制药有限公司 | Reagent bottle |
| CN111658010A (en) * | 2020-06-16 | 2020-09-15 | 成都明杰科技有限公司 | Accumulated liquid sampling auxiliary device and using method thereof |
-
2020
- 2020-11-05 CN CN202011219969.XA patent/CN112401987B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204971369U (en) * | 2015-09-25 | 2016-01-20 | 周平 | Pathology department uses sample collection ware |
| CN106037891A (en) * | 2016-04-22 | 2016-10-26 | 河南科技大学第附属医院 | Tumor interventional therapy device |
| CN206641894U (en) * | 2016-12-29 | 2017-11-17 | 张纯 | A kind of blood internal medicine bone marrow aspiration device |
| CN209091561U (en) * | 2018-07-27 | 2019-07-12 | 吉林大学第一医院 | Puncture needle for cardiac surgery |
| CN111036318A (en) * | 2019-12-30 | 2020-04-21 | 中国大冢制药有限公司 | Reagent bottle |
| CN111658010A (en) * | 2020-06-16 | 2020-09-15 | 成都明杰科技有限公司 | Accumulated liquid sampling auxiliary device and using method thereof |
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