CN113304377B - Injector for anesthesia - Google Patents
Injector for anesthesia Download PDFInfo
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- CN113304377B CN113304377B CN202110446456.0A CN202110446456A CN113304377B CN 113304377 B CN113304377 B CN 113304377B CN 202110446456 A CN202110446456 A CN 202110446456A CN 113304377 B CN113304377 B CN 113304377B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M19/00—Local anaesthesia; Hypothermia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3129—Syringe barrels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31533—Dosing mechanisms, i.e. setting a dose
- A61M5/31535—Means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing, means allowing correction of overset dose
- A61M5/31536—Blocking means to immobilize a selected dose, e.g. to administer equal doses
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31533—Dosing mechanisms, i.e. setting a dose
- A61M5/31545—Setting modes for dosing
- A61M5/31548—Mechanically operated dose setting member
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/31566—Means improving security or handling thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31565—Administration mechanisms, i.e. constructional features, modes of administering a dose
- A61M5/3159—Dose expelling manners
- A61M5/31593—Multi-dose, i.e. individually set dose repeatedly administered from the same medicament reservoir
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/46—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for controlling depth of insertion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M2005/3125—Details specific display means, e.g. to indicate dose setting
- A61M2005/3126—Specific display means related to dosing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses an anesthetic syringe which comprises a needle cylinder 1, a locating sleeve 2, a piston rod 3, a piston 4, a quantitative nut 5, an injection needle 6, a limiting sleeve 7, a limiting head 8, a sterilizing cotton plug 9 and a filter plug 10. Wherein the injection needle 6 is arranged on the injection nozzle at the bottom of the needle cylinder 1, the piston 4 is arranged on the piston rod 3, and the piston rod 3 and the piston 4 are arranged in the needle cylinder 1. The locating sleeve 2 is arranged at the top of the needle cylinder 1, the locating nut 5 is arranged on the locating sleeve 2, the limiting sleeve is arranged at the bottom of the needle cylinder 1, the limiting head 8 is arranged at the bottom of the limiting head 8, and the sterilizing cotton plug 9 is arranged in the limiting head 8. The anesthetic syringe provided by the invention is provided with the modularized quantitative and depth-fixing assembly, and can realize accurate control of injection quantity and injection depth. In addition, the modularized arrangement can enable medical staff to freely assemble according to actual demands, and injection in different modes such as routine, quantitative, depth fixing and the like can be carried out.
Description
Technical Field
The invention relates to an anesthetic syringe, in particular to a modularized anesthetic syringe with adjustable injection quantity and injection depth, and belongs to the technical field of anesthetic instruments.
Background
Syringes are a common medical injection device. The existing medical injector mainly comprises an injection needle, a needle cylinder with a small hole and a piston rod matched with the needle cylinder. When in use, medical staff can reference the scale on the syringe cylinder to suck the injection into the syringe cylinder at one time, and after the injection needle is inserted into the body of a patient, the injection is required to be injected into the body of the patient at one time.
In the case of anesthetic injection using a syringe, an anesthesiologist needs to accurately control the injection amount of anesthetic, and multiple anesthetic injections of different doses may be required during the same surgical procedure. Although an anesthesiologist can control the amount of injection liquid sucked into the syringe by using the scale on the syringe of the existing injector, the injection amount injected into the patient cannot be accurately controlled during injection, and the anesthetic effect is reduced. In addition, multiple injections are needed when continuous anesthesia is carried out, the pushing distance of the piston rod is repeatedly calculated, the difficulty is high, the operation is complex, the anesthesia effect is reduced, and the infection risk is increased.
In addition, the injection depth of injection needles at different anesthesia positions is different, and the injection depth of the injection needles can not be adjusted according to the anesthesia positions by the existing injector, and especially for anesthesiologists with less experience, the injection depth of the injection needles is more difficult to control, and the anesthesia effect is greatly reduced.
The existing patent ZL200820050431.9 provides a quantitative adjustable pen type injector, which comprises a fixed tube, a push head, a sleeve seat, a screw rod, a transmission tube, a stop ring, a fixed ring and other complex structures to realize quantitative injection of the injector, but the structure of the injector is complicated, the volume of the injector is obviously increased, the manufacturing cost is increased, and the operation is inconvenient.
The existing patent zl20110165350. X discloses a portable insulin syringe, which is characterized in that a piston rod is arranged to be matched with a threaded rod and a threaded tube, and the injection quantity is adjusted by adjusting the whole length of the piston rod, so that the quantitative injection can be realized by simple structure, but the scale is positioned inside a syringe, the scale cannot be completely displayed, the adjustment is inconvenient, and the injection depth of an injection needle cannot be controlled.
Patent ZL201320126875.7 discloses a take syringe for anesthesia of mount, and it sets up branch in needle body both sides, sets up the sucking disc on the branch, although realize the accuracy of inserting the needle to a certain extent, but its unable accurate degree of control injection degree of depth, the operation degree of difficulty is still very big.
In addition, the existing injector is single in function, different injectors are needed to be adopted according to different use situations, and independent production is needed during production, so that the use amount and the production cost of the injector are additionally increased.
Therefore, it is an urgent need to provide an anesthetic syringe which facilitates accurate quantitative and depth injection and can change the function of the syringe according to the actual situation.
Disclosure of Invention
The invention aims to provide an anesthetic syringe which can accurately control injection quantity and injection depth and adopts reasonable combination of module structures to realize functions of quantitative, depth setting or common injection.
The aim of the invention is achieved by the following technical scheme.
The utility model provides an injector for anesthesia, includes cylinder, piston rod, piston, injection needle, the cylinder include the barrel with set up in the injection nozzle of barrel bottom, the injection needle with the injection nozzle is connected, the top of barrel is provided with the top external screw thread, the piston rod includes the body of rod, presses briquetting, fixed plate and piston connector, the body of rod is a plurality of plate body alternately and forms, the briquetting set up in the body of rod top, the fixed plate set up in the body of rod bottom, the piston connector set up in the bottom of fixed plate, the affiliated piston top is provided with the piston connecting hole, the piston rod with the piston passes through the piston connector with the piston connecting hole is connected, the piston rod still wraps the scale plate and sets up the scale plate on the scale plate top. The outer side surface of the scale plate is provided with a first scale, the inner side surface of the scale plate is connected with the outer side surface of the plate body, the scale value of the first scale is gradually increased from top to bottom, and the lower bottom surface of the scale plate corresponds to the scale line of the first scale; the syringe comprises a syringe body, and is characterized by further comprising a positioning sleeve, wherein the positioning sleeve is used for limiting the injection quantity of the syringe, the outer side face of the sleeve body is provided with a first positioning thread, the bottom of the sleeve body is provided with an internal thread, the positioning sleeve and the syringe are in threaded connection with the top external thread through the internal thread, a part of the positioning thread of the sleeve body is provided with a first through scale window, the first scale window is used for displaying the first scale of the scale plate, the scale plate is slidably arranged in the first scale window, the first positioning thread is connected with a quantitative nut in a threaded manner, and the quantitative nut limits the lowest point of the movable range of the 0 scale plate.
Further, the number of the first scales is more than two.
Further, the novel water heater further comprises a thread sleeve, a second positioning thread is arranged on the outer side face of the thread sleeve and sleeved on the bottom of the cylinder body, a second scale window is arranged at the position of the second positioning thread of the thread sleeve, a second scale is arranged on the cylinder body at the position corresponding to the second scale window, and the scale value of the second scale is gradually increased from bottom to top.
Further, still include the thread bush, the lateral surface of thread bush is provided with location screw thread two and overlaps and locate the bottom of barrel, the position department of the location screw thread two of thread bush is provided with the scale surface, be provided with scale two on the scale surface, the scale value of scale two is from down upwards increasing gradually.
Further, the device further comprises a limiting sleeve, wherein the limiting sleeve comprises a depth-fixing nut, a connecting column and a threaded ring, the depth-fixing nut is connected with the threaded ring through the connecting column, and an internal thread of the depth-fixing nut is matched with a positioning thread II of the limiting sleeve.
Further, the device also comprises a limiting head, wherein the limiting head comprises a limiting body and a threaded joint arranged at the top of the limiting body, and the threaded joint is in threaded connection with the threaded ring.
Further, the limiting body is divided into a plurality of valve bodies by the gaps.
Further, the inner cavity of the limiting body is provided with disinfection hemostatic cotton.
Further, the needle cylinder also comprises a clamping ear which is arranged on the top of the locating sleeve or the top of the needle cylinder.
Further, the number of the second scales is more than two.
The invention has the advantages that:
1. the device is characterized in that a positioning sleeve is independently arranged, a quantitative nut is in threaded fit with the outer side of the positioning sleeve, a first scale window is formed in the positioning sleeve, a first scale plate is arranged on a piston rod, a first scale is arranged on the first scale plate, a first scale is observed through the first scale window, a 0 scale is arranged at the position of a 0 scale line, the 0 scale is arranged on the first scale window in a sliding mode, the 0 scale or the whole driving position of the piston rod is limited through the quantitative nut, the distance between the lower bottom surface of the 0 scale and the upper top surface of the quantitative nut (the scale value corresponding to the upper top surface of the quantitative nut) is single injection quantity, the injection quantity can be adjusted only by adjusting the position of the quantitative nut on the positioning sleeve, and the device can be continuously adjusted for multiple times, and is simple in structure and convenient to operate, and the injection quantity is accurate to control.
2. The threaded sleeve is separately provided for adjustment of the injection depth. When needs carry out injection degree of depth regulation, install the thread bush in the cylinder lower part, install the stop collar screw thread on the thread bush, through adjusting the position of stop collar on the thread bush to adjust the position of relative injection needle, and then adjust injection degree of depth, the injection is provided with second scale and is used for instructing injection degree of depth moreover, can adjust injection degree of depth according to the difference at anesthesia position, adjusts convenient accuracy, very big improvement anesthesia effect.
3. The quantitative and depth setting of the injector is not integrated on the needle cylinder, but adopts a modularized design, medical staff can freely assemble according to injection requirements, the use is flexible, the module production is carried out during production, the component production is carried out according to the requirements, and the cost is reduced.
4. The side face of the needle tube of the injection needle is provided with the downward inclined side spray hole, so that the injection is prevented from vertically impacting the needle hole, the pain of injection is reduced, and the injection is prevented from overflowing along the needle hole.
5. A porous adsorption plug is arranged between the injection needle and the syringe to adsorb impurities in the injection liquid and prevent the impurities from being injected into a patient. In addition, a flow limiting valve plate is further arranged according to the requirement, so that the flow resistance of the injection liquid is increased, the backflow of the injection liquid in the needle cylinder is prevented when the injector is pulled out, and the use safety is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1: the three-dimensional structure of the injector for anesthesia is schematically shown.
Fig. 2: explosion diagram of injector for anesthesia.
Fig. 3: the structure of the needle cylinder is schematically shown.
Fig. 4: the structure of the positioning sleeve is schematically shown.
Fig. 5: the piston rod is schematically shown.
Fig. 6: a piston rod is in cross section.
Fig. 7: a piston cross-section.
Fig. 8: injection needle and its partial structure schematic diagram.
Fig. 9: the limit sleeve is structurally schematic.
Fig. 10: the limit head is schematically shown.
Fig. 11: schematic diagram of the structure of the adsorption plug.
The device comprises a 1-needle cylinder, a 101-cylinder body, a 102-top external thread, a 103-thread sleeve, a 104-scale window II, a 105-injection nozzle, a 106-limit convex ring, a 2-positioning sleeve, a 201-sleeve body and a 202-clamping lug, wherein the first end of the first end is provided with a first end of the second end; 203-positioning convex rings, 204-first scale windows, 205-internal threads, 3-piston rods, 301-rod bodies, 302-pressing blocks, 303-fixing plates, 304-scale plates, 305-0 scale plates, 306-piston connectors, 4-pistons, 401-piston connecting holes, 5-quantitative nuts, 6-injection needles, 601-connecting cylinders, 602-needle tubes, 603-side spray holes, 7-limiting sleeves, 701-depth fixing nuts, 702-threaded rings, 703-connecting columns, 8-limiting heads, 801-limiting bodies, 802-threaded connectors, 803-gaps, 9-sterilized hemostatic cotton, 10-adsorption plugs and 1001-adsorption holes.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
As shown in fig. 1 to 11, according to an embodiment of the present invention, there is provided an anesthetic syringe including a cylinder 1, a positioning sleeve 2, a piston rod 3, a piston 4, a dosing nut 5, an injection needle 6, a limiting sleeve 7, a limiting head 8, sterilized hemostatic cotton 9, and an adsorption plug 10. Wherein the cylinder 1 comprises a barrel 101 and an injection nozzle 105 arranged at the bottom of the barrel 101. The top of the cylinder 101 is provided with a top external thread 102. The positioning sleeve 2 comprises a sleeve body 201, a positioning thread I is arranged on the outer side surface of the sleeve body 201, the quantitative nut 5 is in threaded fit with the positioning thread I on the outer side surface of the sleeve body 201, and an internal thread 205 is arranged at the bottom of the sleeve body 201. The needle cylinder 1 and the positioning sleeve 2 are in threaded connection through the top external threads 102 and the internal threads 205. The positioning sleeve 2 further comprises a first through scale window 204 positioned on the first positioning thread, a positioning convex ring 203 positioned on the outer side of the bottom of the sleeve body 201 and a clamping lug 202 positioned on the top of the sleeve body 201, wherein the clamping lug 202 is in threaded connection with the sleeve body 201. The positioning collar 203 defines the lowest point of the range of motion of the dosing nut 5.
The piston rod 3 comprises a rod body 301, a pressing block 302, a fixing plate 303, a scale plate 304, a 0 scale plate 305 and a piston connector 306. Rod 301 is formed by intersecting a plurality of plates, and has a cross section of one, ten or the like. The scale plate 304 is fixed on the plate body of the rod body 301 and corresponds to the first scale window 204 on the positioning sleeve 2, the outer side surface of the scale plate is provided with the first scale, and the scale value of the first scale is gradually increased from top to bottom. The top of the scale plate 304 is provided with a 0 scale plate 305,0, and the lower bottom surface of the scale plate 305 corresponds to the 0 scale mark of the first scale. The 0 scale plate 305 protrudes out of the first scale window 204 and is in sliding fit, on one hand, the piston rod 3 is circumferentially limited by the fit of the 0 scale plate 305 and the first scale window 204, and on the other hand, the piston rod 3 is axially limited by the fit of the 0 scale plate 305 and the quantitative nut 5. The scale between the 0 scale plate 305 and the dosing nut 5 is shown as the shot size, i.e. the scale indication corresponding to the top surface of the dosing nut 5. The number of the first scale windows 204 and the first scale plates 304 is more than one, and in order to facilitate the observation of scales, the number of the first scale windows 204 and the first scale plates 304 is preferably two and symmetrically arranged. In addition, the pressing block 302 is disposed at the top of the rod 301, and the piston connector 306 is disposed at the bottom of the fixing plate 303. The top of the piston 4 is provided with a piston connecting hole 401. The piston rod 3 is connected to the piston connecting hole 401 of the piston 4 via the piston connecting head 306. In addition, in order to facilitate the rotation of the dosing nut 5, the outer side surface of the dosing nut 5 is provided with anti-slip patterns. The position of the dosing nut 5 on the first positioning thread is adjusted by rotating the dosing nut 5, so that the distance between the dosing nut 5 and the 0 scale plate 305 is adjusted, and the injection quantity in single injection is adjusted. For ease of operation, the positioning collar 203 limits the lower limit of the dosing nut 5. In addition, in order to facilitate the reading of the values, the dosing nut 5 is provided with an indication mark for pointing to the scale line of the scale.
The structure of the injection needle 6 comprises a connecting cylinder 601 and a needle tube 602 which is communicated with the connecting cylinder 601, wherein the injection needle 6 is connected with the injection nozzle 105 of the syringe 1 in a sleeving way through the connecting cylinder 601. An adsorption plug 11 is provided between the connection cylinder 601 and the nozzle 105, and a plurality of adsorption holes 1101 are provided in the adsorption plug 11. The adsorption plug 11 is made of an adsorption material, and is used for adsorbing impurities in injection and preventing the impurities from being injected into a patient. Besides the bottom jet hole, the side face of the needle tube 602 is also provided with more than one side jet hole 603, and the side jet hole 603 can enable injection liquid or anesthetic to uniformly enter into organism tissues, so that the anesthetic effect is improved, the speed of anesthetic injection can be reduced, the impact of the anesthetic on the side wall of a needle hole is further reduced, and the pain feeling during anesthetic injection is reduced. The axis of the side nozzle 603 is perpendicular to the axis of the needle 602 or at an angle, i.e., the direction of the orifice of the side nozzle 603 is inclined downward or upward with respect to the needle 602. Preferably, the direction of the orifice of the side spray hole 603 is inclined downwards relative to the needle tube 602, the side spray hole 603 with the downwards inclined orifice can prevent the vertical anesthetic from vertically impacting on the side wall of the needle hole during spraying, but slowly enters into the organism tissue along the side wall of the needle hole at a certain angle, so that the pain is further reduced, and the side spray hole 603 is inclined downwards relative to the upwards inclined side spray hole 603, so that the liquid medicine can be prevented from overflowing out of the needle hole along the side wall of the needle hole to cause the liquid medicine waste. In addition, in order to prevent reflux of anesthetic and body tissue liquid medicine during multiple anaesthesia, a flow limiting valve plate may be provided between the connecting tube 601 and the injection nozzle 105 in addition to the adsorption plug 11, so that resistance during passage of the anesthetic is increased, and the reflux of the anesthetic and body tissue liquid medicine is prevented from contaminating the liquid medicine in the syringe 1.
The bottom of the cylinder 101 is sleeved with a thread bush 103, and a limit structure is arranged between the thread bush 103 and the cylinder 101, preferably, the limit structure is a protrusion and/or a groove arranged on the cylinder 101 along the axial direction or the circumferential direction thereof, and a groove and/or a protrusion arranged inside the thread bush 103 along the axial direction or the circumferential direction thereof. The outer side surface of the thread sleeve 103 is provided with a second positioning thread, the top of the thread sleeve is provided with a limiting convex ring 106, the second positioning thread is provided with a second scale window 104, the bottom of the cylinder 102 is provided with a second scale corresponding to the second scale window 104, the second scale is used for displaying injection depth, and the second scale is gradually increased from bottom to top. The number of scale windows 104 and the number of scales of injection depth two is more than one, preferably two symmetrically arranged. In addition, in order to facilitate the production process, a second scale may be provided on the threaded sleeve 103. The second scale window 104 arranged at the thread part of the thread sleeve 103 is modified into a second scale surface, the second scale is arranged on the second scale surface, and then the thread sleeve 103 with the second scale is directly sleeved at the bottom of the needle cylinder 1.
The stop collar 7 comprises a depth fixing nut 701, a connecting column 703 and a threaded ring 702, wherein the depth fixing nut 701 and the threaded ring 702 are connected through more than one connecting column 703. The depth fixing nut 701 is screwed with the threaded portion of the stop collar 103 by an internal thread. The limit head 8 comprises a limit body 801 and a screwed joint 802 arranged at the top of the limit body 801. The limit head 8 is screwed with the limit sleeve 7 through the external thread of the threaded joint 802 and the internal thread of the threaded ring 702. The stopper 801 of the stopper head 8 is divided into a plurality of petals by a slit 803. The distance between the bottom surface of the limiting body 801 and the bottom end of the needle tube 602 is the injection depth, and the scale value on the second scale corresponding to the top surface of the depth fixing nut 701 is the injection depth value. According to the injection depth requirements of different anesthesia parts, an anesthesiologist rotates the threaded sleeve 7 to enable the top surface of the depth fixing nut 701 to reach corresponding scale values of the scale two so as to adjust the injection depth.
The limiting body 801 can be manufactured in different sizes and shapes, and an anesthesiologist can reasonably select the size and shape of the limiting head 801 according to different anesthetic sites so as to facilitate operation. Further, the cavity inside the limiting body 801 is provided with the disinfection hemostatic cotton 9, and after the injection is finished, an anesthesiologist can directly press the disinfection hemostatic cotton 9 at the needle hole position through the slit 803 to disinfect and stop bleeding.
The invention modularizes the quantitative component and the depth setting component of the injector for anesthesia, and in the actual use process: when the injection is carried out conventionally, an anesthesiologist directly connects the clamping lug 202 on the top external thread 102 of the syringe 1 in a threaded manner, the piston rod 3 and the piston 4 are inserted into the syringe 1, the injection needle 6 is arranged on the injection nozzle 105 at the bottom of the syringe 1, and the injection is carried out conventionally. When the quantitative injection is carried out, the clamping lug 202 is required to be installed at the top of the locating sleeve 2, the quantitative nut 5 is in threaded connection with the first locating thread on the outer side face of the locating sleeve 2, the locating sleeve 2 is in threaded connection with the top external thread 102 on the top of the needle cylinder 1 through the internal thread 205 on the bottom, the piston rod 3 and the piston 4 are inserted into the needle cylinder 1, meanwhile, the 0 scale plate 305 slides in the first scale window 204 of the locating sleeve 2, the injection needle 6 is installed on the injection nozzle 105 on the bottom of the needle cylinder 1, after the injector extracts anesthetic, the quantitative nut 5 is rotated according to the required injection quantity, the top face of the quantitative nut 5 is aligned with the corresponding scale value on the first scale, namely the injection quantity, after the injection needle is inserted into organism tissues, the piston rod 3 is driven to move downwards, and when the 0 scale plate 305 is abutted to the top face of the quantitative nut 5, the injection quantity is the injection quantity which is adjusted in advance, and the injection needle 6 is pulled out. When depth setting injection is needed, the thread sleeve 103 is needed to be installed at the bottom of the needle cylinder 1, the depth setting nut 701 of the limit sleeve 7 is installed at the thread part of the thread sleeve 103 in a threaded manner, the thread joint 802 of the limit head 8 is installed on the thread ring 702 in a threaded manner, an anesthesiologist sets the injection depth in advance according to different injection positions, the limit sleeve 7 is rotated to adjust the position of the depth setting nut 701 at the thread part of the thread sleeve 703, the scale value on the second scale corresponding to the upper end face of the depth setting nut 701 limits the distance from the lower end face of the limit body 801 of the limit head 8 to the bottom end of the needle tube 602, namely the injection depth, the disinfection hemostatic cotton 9 is plugged into the cavity inside the limit body 801, the needle tube 602 directly pierces corresponding organism tissues under the limit actions of the limit sleeve 7 and the limit head 8, the pierced depth is the set injection depth, after injection is completed, the disinfection hemostatic cotton 9 is pushed out through a gap, the needle tube 602 of the injection needle is pulled out, the disinfection hemostatic cotton 9 stays at the needle hole position, and on one hand, and on the other hand, anesthetic is prevented from overflowing.
In summary, the invention modularizes the components of the anesthetic syringe such as the quantitative component, the fixed depth component and the like, and medical staff can assemble the anesthetic syringe according to actual requirements, thereby realizing the requirements of routine injection, quantitative injection, fixed depth injection and the like.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (4)
1. The utility model provides an injector for anesthesia, includes cylinder (1), piston rod (3), piston (4), injection needle (6), cylinder (1) include barrel (101) with set up in injection nozzle (105) of barrel (101) bottom, injection needle (6) with injection nozzle (105) connect, its characterized in that: the top of barrel (101) is provided with top external screw thread (102), piston rod (3) include body of rod (301), press piece (302), fixed plate (303) and piston connector (306), body of rod (301) are a plurality of plate body alternately and form, press piece (302) set up in body of rod (301) top, fixed plate (303) set up in body of rod (301) bottom, piston connector (306) set up in the bottom of fixed plate (303), piston (4) top is provided with piston connecting hole (401), piston rod (3) with piston (4) are passed through piston connector (306) with piston connecting hole (401) are connected, piston rod (3) still package scale plate (304) and are set up in 0 scale plate (305) on scale plate (304) top; the outer side surface of the scale plate (304) is provided with a first scale, the inner side surface of the scale plate is connected with the outer side surface of the plate body, the scale value of the first scale is gradually increased from top to bottom, and the lower bottom surface of the 0 scale plate (305) corresponds to the 0 scale mark of the first scale; the syringe comprises a syringe body, and is characterized by further comprising a positioning sleeve (2), wherein the positioning sleeve (2) is used for limiting the injection quantity of the syringe, the positioning sleeve (2) comprises a sleeve body (201), a first positioning thread is arranged on the outer side surface of the sleeve body (201), an inner thread (205) is arranged at the bottom of the sleeve body, the positioning sleeve (2) and the syringe (1) are in threaded connection with each other through the inner thread (205) and the top outer thread (102), a first through scale window (204) is arranged on one part of the positioning threads of the sleeve body (201), the first scale window (204) is used for displaying a first scale of the scale plate (304), the 0 scale plate (305) is slidably arranged in the first scale window (204), a first positioning thread is connected with a quantitative nut (5), and the quantitative nut (5) limits the lowest point of the movable range of the 0 scale plate (305);
the device further comprises a thread sleeve (103), wherein a second positioning thread is arranged on the outer side surface of the thread sleeve (103) and sleeved at the bottom of the cylinder body (101), a second scale window (104) is arranged at the second positioning thread, a second scale is arranged on the cylinder body (102) at a position corresponding to the second scale window (104), and the scale value of the second scale is gradually increased from bottom to top;
the limiting sleeve (7) comprises a fixed-depth nut (701), a connecting column (703) and a threaded ring (702), wherein the fixed-depth nut (701) is connected with the threaded ring (702) through the connecting column (703), and an internal thread of the fixed-depth nut (701) is in threaded fit with a positioning thread II of the limiting sleeve (103);
the device further comprises a limiting head (8), wherein the limiting head (8) comprises a limiting body (801) and a threaded joint (802) arranged at the top of the limiting body (801), and the threaded joint (802) is in threaded connection with the threaded ring (702);
the injection needle (6) comprises a connecting cylinder (601) and a needle tube (602) which is in through connection with the connecting cylinder (601), and the injection needle (6) is connected with the injection nozzle (105) of the needle tube (1) in a sleeving manner through the connecting cylinder (601); an adsorption plug (11) is arranged between the connecting cylinder (601) and the injection nozzle (105), and a plurality of adsorption holes (1101) are arranged in the adsorption plug (11);
the side surface of the needle tube (602) is also provided with more than one side spray hole (603), and the axis of the side spray hole (603) and the axis of the needle tube (602) form a certain included angle;
the limiting body (801) is divided into a plurality of valve bodies by a gap (803);
an inner cavity of the limiting body (801) is provided with disinfection hemostatic cotton (9).
2. An anesthetic syringe as claimed in claim 1, wherein: the number of the first scales is more than two.
3. An anesthetic syringe as claimed in claim 1, wherein: the device also comprises a clamping lug (202), wherein the clamping lug (202) is arranged at the top of the locating sleeve (2) or the top of the needle cylinder (1).
4. An anesthetic syringe as claimed in claim 1, wherein: the number of the second scales is more than two.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110446456.0A CN113304377B (en) | 2021-04-25 | 2021-04-25 | Injector for anesthesia |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110446456.0A CN113304377B (en) | 2021-04-25 | 2021-04-25 | Injector for anesthesia |
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| CN113304377A CN113304377A (en) | 2021-08-27 |
| CN113304377B true CN113304377B (en) | 2023-07-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB2617855A (en) * | 2022-04-21 | 2023-10-25 | Redmond Moynihan Laurence | Safety apparatus for a multi-dose syringe |
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| CN113304377A (en) | 2021-08-27 |
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