CN109276294B - Therapeutic lumbar puncture needle capable of measuring oxygen partial pressure and biochemical index of cerebrospinal fluid - Google Patents
Therapeutic lumbar puncture needle capable of measuring oxygen partial pressure and biochemical index of cerebrospinal fluid Download PDFInfo
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- CN109276294B CN109276294B CN201810081097.1A CN201810081097A CN109276294B CN 109276294 B CN109276294 B CN 109276294B CN 201810081097 A CN201810081097 A CN 201810081097A CN 109276294 B CN109276294 B CN 109276294B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/03—Measuring fluid pressure within the body other than blood pressure, e.g. cerebral pressure ; Measuring pressure in body tissues or organs
- A61B5/032—Spinal fluid pressure
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Abstract
The utility model belongs to the field of medical appliances, and particularly relates to a therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical indexes of cerebrospinal fluid, which comprises a needle head 1, a needle cylinder 2, a pushing component 3, a guide wire 4, a needle cylinder interface 5, a liquid guide tube 6, a liquid collector 7 and an adapter joint 8, wherein the needle head 1 is a hollow cavity, and a scale 101 is arranged on the needle head 1; the pushing component 3 is arranged in the needle cylinder 2, the needle head 1 is connected with the front end of the needle cylinder 2, a needle cylinder interface 5 is arranged on one side of the needle cylinder 2 close to the needle head 1, one end of the liquid guide tube 6 is connected with the needle cylinder interface 5, and the other end is connected with the liquid collector 7. The lumbar puncture needle disclosed by the utility model can collect cerebrospinal fluid under the condition of isolating air, is simple and convenient to operate and safe to use, can achieve the purpose of accurately measuring oxygen partial pressure and biochemical indexes, and can realize in-situ or ex-situ measurement of the oxygen partial pressure of the cerebrospinal fluid and other biochemical indexes; but also has the functions of drug injection and liquid exchange.
Description
Technical Field
The utility model belongs to the field of medical appliances, and particularly relates to a therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical indexes of cerebrospinal fluid.
Background
Lumbar puncture is one of the common operations in neurology, and is mainly used for extracting cerebrospinal fluid to measure pressure, injecting medicines into subarachnoid space, imaging cerebrospinal fluid, reserving cerebrospinal fluid specimen and the like, and clinically adopting the cerebrospinal fluid mode generally as follows: the patient typically performs a puncture in a lumbar and lateral recumbent position from the lumbar region 2 to the sacral region 1 (mainly lumbar regions 3-4). After local conventional disinfection and anesthesia, wearing rubber gloves, and slowly puncturing a puncture needle along the direction of spinous process and perpendicular to the back plane, wherein when the needle point encounters bone during needle insertion, the puncture needle is retracted to the subcutaneous angle to be corrected and then is punctured. When an adult inserts about 4-6cm (about 3-4cm of a child), the hard spinal film can be punctured to reach the subarachnoid space, part of the guide wire is extracted, whether cerebrospinal fluid flows out or not is observed, and the cerebrospinal fluid is slowly discharged (not more than 2-3 ml). After the operation is finished, the lumbar puncture needle is pulled out, covered with sterile gauze, fixed by adhesive tape, the patient is placed on the pillow for lying for 4-6 hours, and then the collected cerebrospinal fluid is used for measuring various biochemical indexes.
The oxygen partial pressure of cerebrospinal fluid refers to the strength of the physical dissolved oxygen in the cerebrospinal fluid, which reflects the degree of cerebral hypoxia and is also one of the important detection indexes of cerebrospinal fluid. However, the structural design of the cerebrospinal fluid collector or the liquid collector currently used has a plurality of defects: 1. the cerebrospinal fluid is exposed to the environment for a long time and is easy to be polluted by exogenous substances; 2. because the atmospheric pressure of the air is greater than the pressure of the cerebrospinal fluid, the atmospheric pressure can simultaneously make oxygen, carbon dioxide and the like in the air enter the cerebrospinal fluid when the air is contacted, so that the measurement value of the oxygen partial pressure of the cerebrospinal fluid is inaccurate, and a doctor obtains an incorrect diagnosis result, thereby influencing the subsequent treatment. Therefore, cerebrospinal fluid collected using conventional lumbar puncture needles is not suitable for measuring the partial pressure of oxygen in the cerebrospinal fluid.
In addition, researchers have attempted to improve the structure of lumbar puncture needles, but there are still some other drawbacks:
for example, the utility model patent "a lumbar puncture needle" (patent number CN 201210568499.7) can be used for measuring the pressure of cerebrospinal fluid and injecting medicine, the needle is fixed on the handle, and the observation window is arranged at the position of the transparent handle or the cavity of the handle to observe whether the cerebrospinal fluid flows out; after the needle head enters the human body, drainage is realized by rotating the valve handle threaded rod relative to the handle threaded through hole, and outflow of cerebrospinal fluid is accurately controlled. The device does not solve the following drawbacks of the conventional puncture needle: (1) the depth of insertion is inconvenient to grasp, and a doctor usually collects cerebrospinal fluid empirically; (2) the device for isolating air is not provided, a large amount of air components such as oxygen, carbon dioxide and the like can be mixed to a great extent, so that the measured oxygen partial pressure and other related data of biochemical indexes have great errors; (3) the pressure measuring device is in direct contact with cerebrospinal fluid, and the repeated use can cause pollution and inaccurate measurement results.
The utility model patent (novel lumbar puncture needle) (patent number CN 201220508634.4) can be used for measuring the pressure of cerebrospinal fluid, and the device comprises a puncture needle tube and a needle seat arranged at the rear end of the puncture needle tube, wherein the puncture depth can be accurately judged by the scale on the puncture needle tube; the device does not solve the following drawbacks of the conventional puncture needle: (1) lack of visual visibility to see if cerebrospinal fluid is flowing out; (2) the device for isolating air is not provided, a large amount of air components such as oxygen, carbon dioxide and the like can be mixed to a great extent, so that the measured oxygen partial pressure and related data of other biochemical indexes have great errors; (3) the pressure measuring device is in direct contact with cerebrospinal fluid, so that pollution can be caused by repeated use, and the measurement result is inaccurate; (4) the use is single, and the cerebrospinal fluid collecting device has no function of collecting cerebrospinal fluid and can be used for changing the fluid or injecting medicines.
However, there is no lumbar puncture needle dedicated to collecting cerebrospinal fluid in the market, so that the collected cerebrospinal fluid is kept in an initial state, accuracy of measurement results of various physiological and biochemical indexes is guaranteed, and it is difficult to meet requirements of medical diagnosis and treatment and market, so a new device is urgently needed to meet the requirements.
Disclosure of Invention
The utility model provides a lumbar puncture needle capable of solving the problems, namely, the lumbar puncture needle can directly observe whether cerebrospinal fluid flows out, can accurately grasp the puncture depth, can collect the cerebrospinal fluid in a closed environment and accurately control the quantity of the cerebrospinal fluid; the cerebrospinal fluid pressure can be sensed by the special material guide wire, and the pressure is observed, so that guidance is provided for subsequent clinical diagnosis and treatment. The lumbar puncture needle is simple to operate and convenient to use, is mainly used for collecting cerebrospinal fluid which is not polluted by air under the condition of ensuring safety, so that the collected cerebrospinal fluid is kept in an initial state, and the in-situ or ex-situ measurement of the oxygen partial pressure of the cerebrospinal fluid and other biochemical indexes is realized; can also be used for drug injection and liquid exchange.
The technical scheme for solving the technical problems is as follows:
a therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical index of cerebrospinal fluid comprises a needle head 1, a needle cylinder 2, a pushing component 3, a guide wire 4, a needle cylinder interface 5, a liquid guide tube 6, a liquid collector 7 and an adapter 8; the needle head 1 is a hollow cavity, so that the guide wire 4 can be conveniently inserted and extracted; the guide wire 4 passes through the pushing component 3 and penetrates through the inner cavity of the needle head 1, and has the functions of drainage and air isolation. The needle cylinder 2 is made of transparent materials, so that the collected cerebrospinal fluid amount and the medicine injection amount can be observed; the front end of the syringe 2 is connected with the needle head 1. The pushing component 3 is arranged in the needle cylinder 2, the pushing component 3 comprises a push rod 301 and a piston 302, one end of the push rod 301 is connected with the piston 302, and one end of the push rod 301 is exposed out of the rear end of the needle cylinder 2, so that the effects of isolating air, reserving a liquid storage space and facilitating liquid outflow during measurement are achieved. A needle cylinder interface 5 is arranged on one side of the needle cylinder 2, which is close to the needle head 1, a valve is arranged on the needle cylinder interface 5, a liquid collector 7 is connected with the needle cylinder interface 5 through a liquid collector interface 701, the liquid collector interface 701 is provided with the valve, when the cerebrospinal fluid in the needle cylinder 2 reaches a certain volume, the valve is opened, and the collected cerebrospinal fluid flows into the liquid collector 7 through the needle cylinder interface 5; one end of the liquid collector 7 is provided with an adapter joint 8, and the adapter joint 8 is matched with a liquid inlet of the oxygen partial pressure tester, so that the oxygen partial pressure tester can be conveniently connected; medical staff slowly draws out seal wire 4 from syringe needle 1, and cerebrospinal fluid flows into cylinder 2 at first, and after collecting a certain amount of cerebrospinal fluid, medical staff opens the valve on cylinder interface 5, the liquid trap interface 701 in proper order, and under the negative pressure effect, cerebrospinal fluid flows into liquid trap 7, and after the cerebrospinal fluid is full of liquid trap 7, medical staff closes the valve on cylinder interface 5, the liquid trap interface 701 in proper order, makes the cerebrospinal fluid keep initial state, takes out sealed liquid trap 7 and measures the cerebrospinal fluid oxygen partial pressure, is connected to the oxygen partial pressure apparatus through adapter 8, realizes the oxygen partial pressure of off-site survey cerebrospinal fluid.
Further, the guide wire 4 comprises a pressure measuring unit 401, a connecting part 402 and a plug 403, the plug 403 is arranged outside the syringe 2, the pressure measuring unit 401 is connected with the plug 403 through the connecting part 402, the pressure measuring unit 401 can tap an electric output signal from the plug 403 through the connecting part 402 according to the detected cerebrospinal fluid pressure, the plug 403 is externally connected with a pressure measurer to determine the pressure of the cerebrospinal fluid of the patient before the cerebrospinal fluid is collected, the safety of the patient is ensured, and guidance is provided for subsequent clinical diagnosis and treatment. The pressure measurement unit 401 may be a pressure measurement probe or a measurement diaphragm.
Further, the syringe interface 5 is connected to the liquid trap interface 701 via a catheter 6 to facilitate accurate collection of cerebrospinal fluid.
Further, a branch pipe 201 with a cover is arranged on one side of the syringe 2 close to the needle 1, the branch pipe 201 with the cover is opposite to the syringe interface 5, and medical staff can complete injection of medicine or cerebrospinal fluid replacement through the branch pipe 201 with the cover.
Further, the inner diameter of the needle head 1 is 0.184-1.283 mm, and compared with a common lumbar puncture needle, the inner diameter of the needle head 1 disclosed by the utility model is larger, so that sediment in cerebrospinal fluid is prevented from blocking the needle head.
Further, the piston 302 is made of Kong Dan material, and when cerebrospinal fluid enters the inside of the syringe 2 to contact with the piston 302, the micropores are blocked by the cerebrospinal fluid, so that a closed space is formed inside the syringe 2, and the cerebrospinal fluid is ensured to keep an initial state.
Further, the outer diameter of the guide wire 4 is matched with the inner diameter of the cavity of the needle head 1, so that the extraction of the guide wire 4 is convenient while the air in the cavity of the needle head 1 is prevented from polluting cerebrospinal fluid.
Further, the needle 1 is provided with a scale 101 for precisely grasping the penetration depth.
Furthermore, the needle cylinder 2 is provided with scales, so that the collected cerebrospinal fluid quantity and the dosage can be conveniently measured.
Medical staff can also finish injection of medicine or cerebrospinal fluid exchange through the syringe interface 5;
medical staff can also connect the needle cylinder interface 5 with the oxygen partial pressure measuring instrument through the adapter to realize the in-situ measurement of the cerebrospinal fluid oxygen partial pressure.
The utility model has the beneficial effects that: the lumbar puncture needle has the advantages that the structure is simple, the operation is convenient, whether cerebrospinal fluid flows out or not can be directly observed, the puncture depth can be accurately mastered, the collected cerebrospinal fluid is ensured not to be polluted by air under the condition that the safety of a patient is ensured, the collected cerebrospinal fluid is kept in an initial state, the quantity of the cerebrospinal fluid is accurately controlled, and the in-situ or out-of-situ measurement of the oxygen partial pressure of the cerebrospinal fluid and other biochemical indexes is realized; the device also has the functions of injecting medicine and changing liquid.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
1-needle, 2-syringe, 201-capped manifold, 3-pushing element, 301-push rod, 302-plunger, 4-guidewire, 5-syringe interface, 6-catheter, 7-liquid trap, 701-liquid trap interface, 8-adapter
Fig. 2 shows a schematic view of the structure of the needle 1 of the present utility model.
101-Scale
Fig. 3 is a schematic view of the structure of the guide wire 4 of the present utility model.
401 pressure measuring cell, 402 connection, 403 plug
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The utility model is further described below with reference to the drawings and detailed description.
Example 1A therapeutic lumbar puncture needle capable of measuring partial pressure of cerebrospinal fluid oxygen and biochemical index
A therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical index of cerebrospinal fluid comprises a needle head 1, a needle cylinder 2, a pushing component 3, a guide wire 4, a needle cylinder interface 5, a liquid guide tube 6, a liquid collector 7 and an adapter 8; the needle head 1 is a hollow cavity, so that the guide wire can be conveniently inserted and extracted; the needle head 1 is provided with a scale 101, and the inner diameter of the needle head 1 is 0.184mm-1.283mm. The syringe 2 is made of transparent material, and the front end of the syringe 2 is connected with the needle 1. The pushing component 3 is arranged in the needle cylinder 2, the pushing component 3 comprises a push rod 301 and a piston 302, one end of the push rod 301 is connected with the piston 302, one end of the push rod 301 is exposed out of the rear end of the needle cylinder 2, and the piston 302 is made of Kong Dan materials.
The needle cylinder 2 is provided with scales, one side of the needle cylinder 2, which is close to the needle head 1, is provided with a needle cylinder interface 5, and the needle cylinder interface 5 is provided with a valve; a branch pipe 201 with a cover is arranged at one side close to the needle head 1, the branch pipe 201 with the cover is arranged opposite to the syringe interface 5, and medical staff can complete injection of medicines or cerebrospinal fluid replacement through the branch pipe 201 with the cover. The syringe interface 5 is connected with the liquid collector interface 701 through a liquid guide tube 6, and a valve is arranged on the liquid collector interface 701; the other end of the liquid collector 7 is provided with an adapter joint 8, and the opening of the adapter joint 8 is matched with the liquid inlet of the oxygen partial pressure tester to prevent cerebrospinal fluid from leaking out and air from entering; ensuring that the air pollution to the cerebrospinal fluid is avoided and the cerebrospinal fluid is kept in an initial state.
The guide wire 4 comprises a pressure measuring unit 401, a connecting part 402 and a plug 403, wherein the plug 403 is arranged outside the needle cylinder 2, the pressure measuring unit 401 is connected with the plug 403 through the connecting part 402, the pressure measuring unit 401 can tap an electric output signal from the plug 403 through the connecting part 402 when the detected cerebrospinal fluid pressure is detected, and the plug 403 is externally connected with a pressure measurer to determine the pressure before the cerebrospinal fluid is collected. The pressure measurement unit 401 may be a pressure measurement probe or a measurement diaphragm.
The guide wire 4 penetrates through the pushing component 3 and penetrates through the cavity of the needle head 1, and the outer diameter of the guide wire 4 is matched with the inner diameter of the cavity of the needle head 1; before puncture, the guide wire 4, the pushing part 3 and the needle head 1 are integrated, and the front end of the syringe 2 is connected with the needle head 1.
Example 2 method of Using therapeutic lumbar puncture needle capable of measuring partial pressure of cerebrospinal fluid oxygen and Biochemical index
Before the puncture needle is slowly penetrated along the spinous process direction, the valve is closed; in the needle insertion process, when the needle head 1 is used for puncturing, an adult inserts the needle by about 4-6cm (about 3-4cm of a child), the depth of the needle insertion is determined according to the scale 101 arranged on the needle head 1, namely, the dura mater can be punctured to reach the subarachnoid space, part of the guide wire 4 is extracted, whether cerebrospinal fluid flows out or not is observed, the pressure of the cerebrospinal fluid is sensed by the guide wire 4 made of special materials immediately, and the plug 403 is externally connected with a pressure measurer to determine the pressure before the cerebrospinal fluid is collected; under the condition of ensuring the safety of a patient, the guide wire 4 is drawn out, the push rod 301 is slowly moved, the liquid storage space is adjusted, the cerebrospinal fluid collecting speed is controlled, the cerebrospinal fluid is slowly discharged, the volume of the collected cerebrospinal fluid is observed through the scales arranged on the needle cylinder 2, and after reaching 2-3ml, the push rod 301 is stopped moving.
After cerebrospinal fluid collection is finished, the lumbar puncture needle is pulled out, covered with sterile gauze, fixed by adhesive tape, and the patient is placed on the pillow for 4-6 hours. The valve is opened to allow cerebrospinal fluid in the syringe 2 to flow out of the syringe hub 5 through the catheter 6 and into the liquid trap 7. After the cerebrospinal fluid collection is completed, the valve is closed, and the sealed liquid collector 7 is taken out to measure the oxygen partial pressure of the cerebrospinal fluid. An adapter 8 matched with a liquid inlet of the oxygen partial pressure tester is opened and is installed on the oxygen partial pressure tester to measure the oxygen partial pressure of cerebrospinal fluid. The sealed liquid collector 7 can also be taken out to measure other biochemical indexes of the cerebrospinal fluid.
The technical scheme of the utility model can also connect the cerebrospinal fluid collected in a sealed environment with the adapter through the syringe interface 5 and directly mount the cerebrospinal fluid on a measuring instrument, thereby realizing the purpose of measuring the oxygen partial pressure and other biochemical indexes of the cerebrospinal fluid in situ.
The technical scheme of the utility model not only can collect cerebrospinal fluid in a sealed environment, but also has the functions of cerebrospinal fluid replacement and drug injection. The cover on the branch pipe 201 with the cover is opened, the medicine is injected or the liquid for replacing the cerebrospinal fluid is injected, the amount of the medicine to be injected or the liquid for replacing the cerebrospinal fluid is determined by the scale arranged on the syringe 2, the cover on the branch pipe 201 is covered after the injection is finished, and the injection of the medicine or the liquid for replacing the cerebrospinal fluid is finished by the push rod 301. The syringe interface 5 can also be connected with an injector through an adapter, a valve arranged on the syringe interface 5 is opened, and when lumbar administration is required, medicine is injected through the syringe interface 5.
Claims (7)
1. The utility model provides a therapeutical formula lumbar puncture needle of measurable cerebrospinal fluid oxygen partial pressure and biochemical index, includes syringe needle (1), seal wire (4), and syringe needle (1) is the cavity, its characterized in that, lumbar puncture needle still includes cylinder (2), pushing component (3), cylinder interface (5), liquid collector (7), adapter (8), and cylinder (2) adopt transparent material to make, and cylinder (2) front end is connected with syringe needle (1), and pushing component (3) set up in cylinder (2), and pushing component (3) include push rod (301) and piston (302), and push rod (301) one end links to each other with piston (302), and push rod (301) one end exposes at cylinder (2) rear end; a needle cylinder interface (5) is arranged on one side, close to the needle head (1), of the needle cylinder (2), a valve is arranged on the needle cylinder interface (5), the needle cylinder interface (5) is connected with a liquid collector (7) through a liquid collector interface (701), the valve is arranged on the liquid collector interface (701), and an adapter joint (8) is arranged at one end, far away from the needle cylinder interface (5), of the liquid collector (7); the guide wire (4) passes through the pushing component (3) and penetrates through the inner cavity of the needle head (1), the guide wire (4) comprises a pressure measurement unit (401), a connecting part (402) and a plug (403), the pressure measurement unit (401) is connected with the plug (403) through the connecting part (402), the plug (403) is exposed out of the rear end of the needle cylinder (2), and the needle cylinder interface (5) is connected with the liquid trap interface (701) through a liquid guide tube (6).
2. The therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical indexes of cerebrospinal fluid according to claim 1, wherein the needle cylinder (2) is provided with a branch pipe (201) with a cover at one side close to the needle head (1).
3. The therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical index of cerebrospinal fluid according to claim 1, wherein the inner diameter of the needle (1) is 0.184mm-1.283mm.
4. The therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical index of cerebrospinal fluid according to claim 1, wherein said piston (302) is made of Kong Dan material.
5. The therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical index of cerebrospinal fluid according to claim 1, wherein the outer diameter of the guide wire (4) is matched with the inner diameter of the cavity of the needle (1).
6. The therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical index of cerebrospinal fluid according to claim 1, wherein the needle (1) is provided with a scale (101).
7. The therapeutic lumbar puncture needle capable of measuring the oxygen partial pressure and biochemical index of cerebrospinal fluid according to claim 1, wherein the needle cylinder (2) is provided with graduations.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810081097.1A CN109276294B (en) | 2018-01-29 | 2018-01-29 | Therapeutic lumbar puncture needle capable of measuring oxygen partial pressure and biochemical index of cerebrospinal fluid |
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| CN201810081097.1A CN109276294B (en) | 2018-01-29 | 2018-01-29 | Therapeutic lumbar puncture needle capable of measuring oxygen partial pressure and biochemical index of cerebrospinal fluid |
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| CN109276294B true CN109276294B (en) | 2024-02-23 |
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| CN110368075B (en) * | 2019-08-16 | 2024-04-12 | 山东省千佛山医院 | Submerged indwelling guiding device for drainage tube of lumbar cistern |
| CN114073569B (en) * | 2020-08-21 | 2024-12-03 | 迈德微创(天津)医疗器械有限责任公司 | Lumbar puncture needle with puncture depth feedback and real-time cerebrospinal fluid pressure monitoring |
| CN112932549B (en) * | 2021-01-28 | 2022-07-05 | 中国人民解放军陆军军医大学 | Experiment rat cerebrospinal fluid extraction device based on double syringes |
| CN112842408B (en) * | 2021-02-04 | 2022-11-01 | 中国人民解放军陆军军医大学第一附属医院 | Auxiliary propelling device for lumbar puncture needle |
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| CN205758670U (en) * | 2016-05-10 | 2016-12-07 | 黄文静 | A kind of lumbar puncture needle for children |
| CN209404888U (en) * | 2018-01-29 | 2019-09-20 | 兰州大学 | A therapeutic lumbar puncture needle capable of measuring cerebrospinal fluid oxygen partial pressure and biochemical indicators |
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| US4998977A (en) * | 1987-03-02 | 1991-03-12 | Dieter Preiss | Puncture set for medical use |
| WO2006111056A1 (en) * | 2005-04-16 | 2006-10-26 | Mingli He | An invasive assembly for draining cerebro-spinal fluid |
| CN204521927U (en) * | 2014-11-28 | 2015-08-05 | 中山市普利斯微创介入医械有限公司 | Pressure measuring catheter |
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