CN110720968A - Spinal endoscope positioning puncture needle - Google Patents
Spinal endoscope positioning puncture needle Download PDFInfo
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- CN110720968A CN110720968A CN201910961887.3A CN201910961887A CN110720968A CN 110720968 A CN110720968 A CN 110720968A CN 201910961887 A CN201910961887 A CN 201910961887A CN 110720968 A CN110720968 A CN 110720968A
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- puncture needle
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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
- A61B17/3403—Needle locating or guiding means
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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
-
- 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
- A61B17/3403—Needle locating or guiding means
- A61B2017/3413—Needle locating or guiding means guided by ultrasound
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a spinal endoscope positioning puncture needle, and particularly relates to the field of medical instruments. The invention scans a patient by using an ultrasonic scanner, establishes a three-dimensional perspective model of a diseased part of the patient by a modeling technology, and then an attending physician pierces a needle core body into the focus position of the patient through a puncture needle head, a limit bump can limit the maximum piercing length during piercing, so as to avoid that the piercing length is too deep or not enough to reach the expected treatment effect, a positioning chip positions the position during piercing, and the position of the piercing needle body is displayed on the established three-dimensional perspective model in real time, thereby realizing the single operation and the operation accuracy of the physician.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a spinal endoscope positioning puncture needle.
Background
Modern people have higher living and working pressure, and people with waist pain symptoms are more and more. Chronic lumbago is a serious medical and social problem, which is one of the most common causes of labor loss. It is estimated that the rate of lumbago occurring at a certain period of time in a lifetime is 80% in all the population. At any time, about 18% of the population is experiencing low back pain. With the current lifestyle change, patients with chronic lumbago tend to be younger. The majority of patients with chronic lumbocrural pain can well relieve physical therapy through bed rest, but about 20-30% of patients with lumbocrural pain caused by intervertebral disc protrusion or intervertebral canal stenosis do not get better after 2-3 months of conservative treatment and need surgical treatment, but the better treatment effect of lumbar disc protrusion is spinal endoscopic surgery, spinal endoscopic is one of important methods for minimally invasive treatment of lumbar disc protrusion, protrusion pressing nerve roots can be removed under a visible condition only by a 7mm incision, the treatment indication is that the protrusion section conforms to the symptom section, and the lower limb symptom is heavier than the lumbar symptom. Puncture needles are one of the indispensable surgical instruments during spinal endoscopic surgery.
The puncture needle is a common medical appliance and can be used for puncturing organs and tissues or injecting medicines. The puncture needle is suitable for ozone intervertebral disc puncture, joint puncture, muscle pain point puncture, medicine injection and the like, and has the characteristics of sharpness, strong puncture performance, high elasticity and difficulty in breaking. The inner wall and the outer wall are smooth and have small damage. The needle point is processed specially, and the needle point is developed clearly under the ultrasonic condition.
In the prior art, other devices (such as ultrasonic waves and X rays) are needed to perform auxiliary positioning during the orthopedic puncture sampling process, so that the operation is complicated and the operation of a doctor is influenced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a spinal endoscope positioning puncture needle, which is characterized in that a patient is scanned by using an ultrasonic scanner, a three-dimensional perspective model of a diseased part of the patient is established by a modeling technology, then an attending physician pierces a needle core body into the lesion position of the patient through a puncture needle head, a limit bump can limit the maximum piercing length during piercing, the piercing length is prevented from being too deep or insufficient to achieve the expected treatment effect, a positioning chip positions the position during piercing, and the position of the puncture needle body is displayed on the established three-dimensional perspective model in real time, so that the single operation and the operation accuracy of the physician are realized.
In order to achieve the purpose, the invention provides the following technical scheme: a spinal endoscope positioning puncture needle comprises a puncture needle body, wherein a handle is arranged at one end of the puncture needle body;
the puncture needle body comprises a needle core body, a puncture needle head is arranged at one end of the needle core body, a storage cavity and a storage cavity are arranged in the needle core body, a protective shell is arranged in the storage cavity, a positioning chip is arranged in the protective shell, a medicine distributing hole is formed in the storage cavity close to one end of the storage cavity, a first connector is arranged at one end of the needle core body, away from the puncture needle head, a fixed groove is formed in the first connector, an insertion column is arranged in the fixed groove, and a medicine supply channel is formed between the fixed groove and the storage cavity;
the handle includes the handle seat, the inside liquid cavity that holds that is equipped with of handle seat, be equipped with the connecting cylinder between handle seat and the liquid cavity that holds, handle seat one end is equipped with the second connector, be equipped with the benefit medicine passageway between second connector and the liquid cavity that holds.
In a preferred embodiment, the first connector and the insertion column are integrally formed with the needle core body, and the drug supply channel penetrates through the insertion column.
In a preferred embodiment, the outer wall of the stylet body is provided with scale marks, and one end of the outer wall of the stylet body, which is close to the first connector, is provided with a limiting lug which is integrally formed with the stylet body.
In a preferred embodiment, a plurality of shielding pieces are arranged on the inner wall of one end of the medicine supplementing channel, which is far away from the liquid storage cavity, the shielding pieces are all fan-shaped, and the shielding pieces are fixedly connected with the inner wall of the medicine supplementing channel.
In a preferred embodiment, the outer walls of the two sides of the handle seat are provided with handheld grooves, the inner walls of the handheld grooves are provided with a plurality of protective convex strips, and the plurality of anti-skid convex strips are fixedly connected with the inner walls of the handheld grooves.
In a preferred embodiment, the second connector is adapted to a fixing groove, and both the inner wall of the fixing groove and the outer wall of the second connector are provided with threads.
In a preferred embodiment, the inserting column is arranged corresponding to the position of the medicine supplementing channel, and the outer diameter of the inserting column is matched with the inner diameter of the medicine supplementing channel.
In a preferred embodiment, the medicine distributing holes are arranged in four groups, the number of the four groups of medicine distributing holes is multiple, and the medicine distributing holes penetrate through the needle core body and are connected with the storage cavity.
The invention has the technical effects and advantages that:
1. the invention uses the ultrasonic scanner to scan the patient through the arrangement of the puncture needle body, and establishes the three-dimensional perspective model of the diseased part of the patient through the modeling technology, then the main treating doctor pierces the needle core body into the focus position of the patient through the puncture needle head, the limit bump can limit the maximum puncture length during the puncture, the puncture length is prevented from being too deep or not reaching the expected treatment effect, the positioning chip positions the position during the puncture, and the position of the puncture needle body is displayed on the established three-dimensional perspective model in real time, thereby realizing the single operation and the operation accuracy of the doctor;
2. the invention uses the puncture needle body and the handle in a matching way, the second connector is inserted into the fixing groove, the position fixing between the puncture needle body and the handle is completed through the screw thread, the inserting column is inserted into the position of the medicine supplementing channel during the period, the shielding piece is driven to deform, the puncture needle body is inserted into the affected part of a patient through the operating handle at the holding groove position by a medical staff, the protective convex strip can increase the friction force between the handle seat and the hand of the medical staff, the stability of the operation technique of the medical staff is ensured, the puncture error caused by the slipping of the hand is avoided, the analgesic pump or the injector is externally connected with the connecting cylinder, the liquid medicine flows into the liquid storage cavity through the position of the connecting cylinder, then the liquid medicine is conveyed to the position of the storage cavity through the medicine supplementing channel and the medicine supplying channel, the liquid medicine is uniformly conveyed to the affected part through the medicine distributing hole near the positioning chip, compared with the traditional puncture needle, effectual assurance is accurate to be supplied the medicine and is effectively gone on of medicine work to guarantee treatment, treat after the puncture work, the user can use the syringe to be connected with the connecting cylinder, uses antiseptic solution and clear water to wash many times, and twist grip washs, disinfects respectively with handle seat and puncture needle body separation afterwards, guarantees subsequent reuse safety.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is an enlarged view of portion A of FIG. 1 according to the present invention.
Fig. 3 is a schematic view of the tip structure of the present invention.
Fig. 4 is a schematic view of a first connector structure according to the present invention.
Fig. 5 is a schematic view of the handle structure of the present invention.
Fig. 6 is a left side view of the handle of the present invention.
Fig. 7 is a side view of the handle of the present invention.
The reference signs are: 1 puncture needle body, 11 needle core bodies, 12 puncture needle heads, 13 storage cavities, 14 storage cavities, 15 protective shells, 16 positioning chips, 17 medicine distribution holes, 18 first connectors, 19 fixing grooves, 110 inserting columns, 111 medicine supply channels, 112 scale marks, 113 limiting convex blocks, 2 handles, 21 handle seats, 22 liquid storage cavities, 23 connecting cylinders, 24 second connectors, 25 medicine supplementing channels, 26 shielding sheets, 27 handheld grooves and 28 protective convex strips.
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.
The invention provides a spinal endoscope positioning puncture needle, which comprises a puncture needle body 1, wherein one end of the puncture needle body 1 is provided with a handle 2, the puncture needle body 1 comprises a needle core body 11, one end of the needle core body 11 is provided with a puncture needle head 12, the interior of the needle core body 11 is provided with a receiving cavity 13 and a storage cavity 14, the interior of the receiving cavity 13 is provided with a protective shell 15, the interior of the protective shell 15 is provided with a positioning chip 16, one end of the storage cavity 14, which is close to the receiving cavity 13, is provided with a medicine distributing hole 17, one end of the needle core body 11, which is far away from the puncture needle head 12, is provided with a first connector 18, the interior of the first connector 18 is provided with a fixed groove 19, the interior of the fixed groove 19 is provided with an insertion column 110, a medicine supply channel 111 is arranged between the fixed groove 19 and the storage cavity 14, the first connector 18 and the insertion column 110 are, the outer wall of nook closing member body 11 is equipped with scale 112, the outer wall of nook closing member body 11 is close to first connector 18 one end and is equipped with spacing lug 113, spacing lug 113 and nook closing member body 11 integrated into one piece, divide medicine hole 17 to set up to four groups, four groups the quantity of dividing medicine hole 17 all sets up to a plurality of, and is a plurality of divide medicine hole 17 all to run through nook closing member body 11 and storage cavity 14 and link to each other.
As shown in fig. 1 to 3, the embodiment specifically is as follows: an ultrasonic scanner (the prior mature technology, the functions are not repeated) is used for scanning a patient, a three-dimensional perspective model of the diseased part of the patient is established through a modeling technology, then a doctor mainly punctures a needle core body 11 into the focus position of the patient through a puncture needle head 12, a limiting lug 113 can limit the maximum puncture length during the puncture period (the doctor can select a puncture needle with different setting positions of the limiting lug 113 according to the body type or the focus position of the patient before performing an operation), the puncture length is prevented from being too deep or not reaching the expected treatment effect, a positioning chip 16 (set as a VeriChip type RFID chip) positions the position during the puncture period, the position of a puncture 1 is displayed on the established three-dimensional perspective model in real time, so that the single-person operation and the operation accuracy of the needle body of the doctor are realized, and the separation arrangement of a containing cavity 13 and a storage cavity 14 and the arrangement of, can carry out effectual protection to positioning chip 16, can avoid positioning chip 16 directly to receive the extrusion impaired on the one hand, on the other hand can avoid blood stain or tissue fluid to cause the pollution to positioning chip 16, treat only need disinfect, sterilize to puncture needle body 1 after the operation finishes, can not cause the injury to protecting crust 15, effectively guarantee the life of this pjncture needle.
The handle 2 comprises a handle base 21, a liquid storage cavity 22 is arranged in the handle base 21, a connecting cylinder 23 is arranged between the handle base 21 and the liquid storage cavity 22, a second connector 24 is arranged at one end of the handle base 21, a medicine supplementing channel 25 is arranged between the second connector 24 and the liquid storage cavity 22, a plurality of shielding pieces 26 are arranged on the inner wall of one end, away from the liquid storage cavity 22, of the medicine supplementing channel 25, the shielding pieces 26 are fan-shaped, the shielding pieces 26 are fixedly connected with the inner wall of the medicine supplementing channel 25, handheld grooves 27 are arranged on the outer walls of two sides of the handle base 21, a plurality of protective convex strips 28 are arranged on the inner wall of the handheld groove 27, a plurality of anti-skid convex strips are fixedly connected with the inner wall of the handheld groove 27, the second connector 24 is matched with a fixed groove 19, threads are arranged on the inner wall of the fixed groove 19 and the outer wall of the second connector 24, and the inserting column 110, the outer diameter of the inserted column 110 is matched with the inner diameter of the medicine supplementing channel 25;
as shown in fig. 4 to 7, the embodiment is specifically as follows: the second connector 24 is inserted into the position of the fixing groove 19, the position fixing between the puncture needle body 1 and the handle 2 is completed through threads, the inserting column 110 is inserted into the position of the medicine supplementing channel 25 during the period, the shielding sheet 26 is driven to deform, a medical worker inserts the puncture needle body 1 into the affected part of a patient through the operation handle 2 at the position of the handheld groove 27, the protective convex strips 28 can increase the friction force between the handle seat 21 and the hand of the medical worker, the stability of the operation technique of the medical worker is ensured, the puncture error caused by hand slipping is avoided, the analgesic pump or the injector is externally connected through the connecting cylinder 23, the liquid medicine flows into the liquid storage cavity 22 through the position of the connecting cylinder 23, then the liquid medicine is conveyed to the position of the storage cavity 14 through the medicine supplementing channel 25 and the medicine supply channel 111, the liquid medicine is uniformly conveyed to the affected part through the medicine distributing hole 17 at the near the positioning chip 16, compared with the traditional puncture needle which, effectual assurance is accurate to be supplied the medicine and is effectively gone on of medicine supply work to guarantee treatment, treat after the puncture work, the user can use the syringe to be connected with connecting cylinder 23, uses antiseptic solution and clear water to wash many times, twist grip 2 is with handle seat 21 and puncture needle body 1 separation afterwards, washs, disinfects respectively, guarantees subsequent reuse safety.
The working principle of the invention is as follows:
referring to the attached drawings 1-3 of the specification, an ultrasonic scanner is used for scanning a patient, a three-dimensional perspective model of a diseased part of the patient is established through a modeling technology, then an attending physician pierces a needle core body 11 into a focus position of the patient through a puncture needle head 12, during the process, a positioning chip 16 positions the position, the position of the puncture needle body 1 is displayed on the established three-dimensional perspective model in real time, and the positioning chip 16 can be effectively protected by the arrangement of the separation of a containing cavity 13 and a storage cavity 14 and the arrangement of a protective shell 15;
further, referring to the drawings of the specification and fig. 4-7, the second connector 24 is inserted into the position of the fixing groove 19, the position fixing between the puncture needle body 1 and the handle 2 is completed through threads, the insertion post 110 is inserted into the position of the drug supplementing channel 25 during the period, the shielding piece 26 is driven to deform, the medical staff inserts the puncture needle body 1 into the affected part of the patient through the operation handle 2 at the position of the hand holding groove 27, the protective convex strip 28 can increase the friction force between the handle base 21 and the hand of the medical staff, the stability of the operation technique of the medical staff is ensured, the puncture error caused by the slipping of the hand is avoided, the analgesic pump or the syringe is externally connected through the connecting cylinder 23, the drug liquid flows into the liquid storage cavity 22 through the connecting cylinder 23, the drug liquid is then conveyed to the position of the storage cavity 14 through the drug supplementing channel 25 and the drug supply channel 111, the drug liquid is uniformly conveyed to the affected part through the drug distributing hole, can effectively avoid because of the medicine that supplies that the jam caused is interrupted, effectual assurance accuracy supplies medicine and supplies effective going on of medicine work to guarantee treatment, treat after the puncture work, the user can use the syringe to be connected with connecting cylinder 23, uses antiseptic solution and clear water to wash many times, twist grip 2 is with the separation of handle seat 21 and pjncture needle body 1 afterwards, washs, disinfects respectively.
The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;
secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;
and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (8)
1. A spinal endoscope positioning puncture needle is characterized in that: comprises a puncture needle body (1), wherein one end of the puncture needle body (1) is provided with a handle (2);
the puncture needle body (1) comprises a needle core body (11), one end of the needle core body (11) is provided with a puncture needle head (12), a storage cavity (13) and a storage cavity (14) are arranged inside the needle core body (11), a protective shell (15) is arranged inside the storage cavity (13), a positioning chip (16) is arranged inside the protective shell (15), one end, close to the storage cavity (13), of the storage cavity (14) is provided with a medicine distribution hole (17), one end, far away from the puncture needle head (12), of the needle core body (11) is provided with a first connecting head (18), a fixing groove (19) is arranged inside the first connecting head (18), an inserting column (110) is arranged inside the fixing groove (19), and a medicine supply channel (111) is arranged between the fixing groove (19) and the storage cavity (14);
handle (2) are including handle seat (21), handle seat (21) inside is equipped with holds liquid cavity (22), be equipped with connecting cylinder (23) between handle seat (21) and the liquid cavity (22) of holding, handle seat (21) one end is equipped with second connector (24), be equipped with between second connector (24) and the liquid cavity (22) and mend medicine passageway (25).
2. The spinal endoscope positioning puncture needle according to claim 1, characterized in that: first connector (18) and inserted column (110) all with nook closing member body (11) integrated into one piece, supply medicine passageway (111) to run through inserted column (110).
3. The spinal endoscope positioning puncture needle according to claim 1, characterized in that: the outer wall of the needle core body (11) is provided with scale marks (112), one end, close to the first connector (18), of the outer wall of the needle core body (11) is provided with a limiting lug (113), and the limiting lug (113) and the needle core body (11) are integrally formed.
4. The spinal endoscope positioning puncture needle according to claim 1, characterized in that: the inner wall of one end, far away from the liquid storage cavity (22), of the medicine supplementing channel (25) is provided with a plurality of shielding pieces (26), the shielding pieces (26) are all fan-shaped, and the shielding pieces (26) are fixedly connected with the inner wall of the medicine supplementing channel (25).
5. The spinal endoscope positioning puncture needle according to claim 1, characterized in that: handle seat (21) both sides outer wall all is equipped with handheld groove (27), handheld groove (27) inner wall is equipped with many protection sand grip (28), many the antiskid sand grip all with handheld groove (27) inner wall fixed connection.
6. The spinal endoscope positioning puncture needle according to claim 1, characterized in that: second connector (24) and fixed slot (19) looks adaptation, fixed slot (19) inner wall and second connector (24) outer wall all are equipped with the screw thread.
7. The spinal endoscope positioning puncture needle according to claim 1, characterized in that: insert post (110) and benefit medicine passageway (25) position and correspond the setting, insert post (110) external diameter and benefit medicine passageway (25) internal diameter looks adaptation.
8. The spinal endoscope positioning puncture needle according to claim 1, characterized in that: divide medicine hole (17) to set up to four groups, four groups divide the quantity of medicine hole (17) all to set up to a plurality of, it is a plurality of divide medicine hole (17) all to run through nook closing member body (11) and link to each other with storage cavity (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910961887.3A CN110720968A (en) | 2019-10-11 | 2019-10-11 | Spinal endoscope positioning puncture needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910961887.3A CN110720968A (en) | 2019-10-11 | 2019-10-11 | Spinal endoscope positioning puncture needle |
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| Publication Number | Publication Date |
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| CN110720968A true CN110720968A (en) | 2020-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910961887.3A Pending CN110720968A (en) | 2019-10-11 | 2019-10-11 | Spinal endoscope positioning puncture needle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111631817A (en) * | 2020-06-05 | 2020-09-08 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Real-time ultrasonic imaging system under spinal endoscopy and use method thereof |
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| CN201058172Y (en) * | 2007-07-17 | 2008-05-14 | 孙伟 | Disposal brachial plexus anaesthetic puncturing needle |
| CN101422385A (en) * | 2007-11-01 | 2009-05-06 | 杨子伟 | Multifunctional micro-wound puncture needle |
| CN201806767U (en) * | 2010-10-21 | 2011-04-27 | 艾青 | Deep venipuncture device |
| US20160258782A1 (en) * | 2015-02-04 | 2016-09-08 | Hossein Sadjadi | Methods and Apparatus for Improved Electromagnetic Tracking and Localization |
| CN108392254A (en) * | 2018-04-12 | 2018-08-14 | 上海埃斯埃医械塑料制品有限公司 | intelligent lumbar puncture needle |
-
2019
- 2019-10-11 CN CN201910961887.3A patent/CN110720968A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201058172Y (en) * | 2007-07-17 | 2008-05-14 | 孙伟 | Disposal brachial plexus anaesthetic puncturing needle |
| CN101422385A (en) * | 2007-11-01 | 2009-05-06 | 杨子伟 | Multifunctional micro-wound puncture needle |
| CN201806767U (en) * | 2010-10-21 | 2011-04-27 | 艾青 | Deep venipuncture device |
| US20160258782A1 (en) * | 2015-02-04 | 2016-09-08 | Hossein Sadjadi | Methods and Apparatus for Improved Electromagnetic Tracking and Localization |
| CN108392254A (en) * | 2018-04-12 | 2018-08-14 | 上海埃斯埃医械塑料制品有限公司 | intelligent lumbar puncture needle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111631817A (en) * | 2020-06-05 | 2020-09-08 | 温州医科大学附属第二医院、温州医科大学附属育英儿童医院 | Real-time ultrasonic imaging system under spinal endoscopy and use method thereof |
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