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WO2023202650A1 - 一种液压驱动型麻醉助推仪 - Google Patents

一种液压驱动型麻醉助推仪 Download PDF

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Publication number
WO2023202650A1
WO2023202650A1 PCT/CN2023/089371 CN2023089371W WO2023202650A1 WO 2023202650 A1 WO2023202650 A1 WO 2023202650A1 CN 2023089371 W CN2023089371 W CN 2023089371W WO 2023202650 A1 WO2023202650 A1 WO 2023202650A1
Authority
WO
WIPO (PCT)
Prior art keywords
cavity
piston rod
hydraulically driven
medium
medicine bottle
Prior art date
Application number
PCT/CN2023/089371
Other languages
English (en)
French (fr)
Other versions
WO2023202650A9 (zh
Inventor
杨明博
王宏灿
张凯
张立宇
王远
Original Assignee
常州赛乐医疗技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 常州赛乐医疗技术有限公司 filed Critical 常州赛乐医疗技术有限公司
Priority to EP23791304.1A priority Critical patent/EP4512450A1/en
Publication of WO2023202650A1 publication Critical patent/WO2023202650A1/zh
Publication of WO2023202650A9 publication Critical patent/WO2023202650A9/zh

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Classifications

    • 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
    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • 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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • 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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M5/2053—Media being expelled from injector by pressurised fluid or vacuum
    • 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
    • A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
    • 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
    • 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
    • A61M5/31555—Mechanically operated dose setting member by purely axial movement of dose setting member, e.g. during setting or filling of a syringe
    • 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
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • 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
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M2005/14513—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons with secondary fluid driving or regulating the infusion
    • 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
    • A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
    • A61M2005/2006—Having specific accessories
    • 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
    • A61M2005/3114—Filling or refilling
    • 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
    • A61M5/31576—Constructional features or modes of drive mechanisms for piston rods
    • A61M2005/31588—Constructional features or modes of drive mechanisms for piston rods electrically driven

Definitions

  • the invention relates to the technical field of anesthesia boosters, and in particular to a hydraulically driven anesthesia booster.
  • anesthesia booster device that can help doctors solve this problem by pushing the medicine bottle through a mechanical drive unit and controlling the anesthetic injection pressure and metering quantitatively and at a constant pressure.
  • anesthesia boosters There are mainly two types of anesthesia boosters on the market: handheld and desktop.
  • the handheld anesthesia booster installs all components on the handle, which makes it easy to carry as a whole.
  • the medicine bottles, drive units and other components are all concentrated on the handle, it will be too heavy and difficult to control during the injection process. Injection is also inconvenient and can easily affect the stability of the doctor's hand, resulting in poor anesthesia effect.
  • the desktop anesthesia booster device has the medicine bottle, drive unit, etc. set on the host.
  • the host can be placed on the desktop, and then the needle tip and the medicine bottle are connected with a catheter, which can reduce the weight of the handheld part.
  • the catheter has liquid flowing through it, It can only be used once, and the needle tip, catheter and medicine bottle need to be replaced after each injection.
  • the length of the catheter is long, there will be a lot of residual medicine inside, which will cause waste and lead to a higher cost of use of the device as a whole.
  • the purpose of the present invention is to provide a hydraulically driven anesthesia booster device in view of the deficiencies in the prior art, so as to solve the problems of the existing anesthesia booster device being inconvenient for doctors to use and the equipment cost being high.
  • the technical solutions adopted by the present invention include:
  • the main machine includes a driving cylinder and a pushing block; a first cavity is provided in the driving cylinder, and a medium outlet connecting the outside world and the first cavity is provided; the pushing block moves close to and close to the first cavity in the first cavity. Sliding away from the medium outlet; the first cavity is filled with flowing medium between the medium outlet and the pushing block;
  • the handle includes an execution cylinder, a medicine bottle holder and a piston rod; a second cavity is provided in the execution cylinder, and a medium inlet is provided at one end to connect the outside world and the second cavity; the medicine bottle holder is used to place medicine bottles , and one end is detachably connected to the other end of the execution cylinder, and the other end is detachably connected to the needle; the piston rod is slidably disposed in the second cavity, and one end extends to the outside of the execution cylinder and against the medicine bottle, the other end is provided with a fitting portion that fits the inner wall of the second cavity;
  • a conduit for connecting the medium outlet and the medium inlet A conduit for connecting the medium outlet and the medium inlet.
  • the handle further includes an elastic mechanism that is sleeved on the portion of the piston rod located in the second cavity.
  • the host machine further includes a pressure gauge disposed at one end of the first cavity for monitoring pressure information of the flowing medium.
  • the host also includes a drive circuit board for collecting pressure information monitored by the pressure gauge, and controlling the sliding speed of the push block according to the pressure information to keep the pressure information within a set interval. .
  • the main machine also includes a power base, a threaded sleeve, a power device and a screw rod;
  • the power base is detachably connected to one end of the driving cylinder;
  • the threaded sleeve rotates on the power base along a fixed axis, and It is driven to rotate by the power device;
  • the screw rod is screwed into the threaded sleeve, and one end of the screw rod is fixedly connected to the pushing block;
  • the screw rod is provided with a chute extending along the length direction;
  • the main machine also includes a positioning pin fixedly installed on the power base, and one end of the positioning pin extends into the chute.
  • the elastic mechanism includes a first spring sleeved on the piston rod, and its two ends respectively resist the end surface of the inner wall of the second cavity and the end surface of the fitting portion.
  • the elastic mechanism includes a connecting sleeve, a second spring and a third spring that are all sleeved on the piston rod; the connecting sleeve is provided with a first abutting edge and a second abutting edge; the second abutting edge is provided with the connecting sleeve. Both ends of the spring are respectively in contact with the end surface of the inner wall of the second cavity and the first abutment edge; the second abutment edge extends into the second spring; both ends of the third spring are respectively in contact with the first abutment edge.
  • the end surface of the fitting portion is in contact with the second contact edge.
  • a clamping groove is provided on the end surface of the inner wall of the second cavity and/or the end surface of the piston rod for clamping the end of the elastic mechanism.
  • the medium inlet is provided at the end of the execution cylinder, and the center line of the medium inlet coincides with the center line of the piston rod.
  • the medium inlet is provided with a gradually expanding section near one end of the piston rod, and the gradually expanding section has a hole-shaped structure that gradually expands toward the direction of the piston rod.
  • a first annular groove is provided on the side of the fitting portion; a first sealing ring is provided in the first annular groove; a plurality of first through holes are provided on the end face of the fitting portion toward the medium inlet, and the The first through hole communicates with the first annular groove.
  • the pushing block includes a rear block and a front block; a snap-in portion is provided on the end surface of the front block facing the rear block, and the snap-in portion extends into the rear block; A second annular groove is provided on the side of the rear block; a second sealing ring is provided in the second annular groove; a third annular groove is provided on the side of the front block; a third sealing ring is provided in the third annular groove;
  • the end surface of the front block facing the medium outlet has several second through holes, and the second through holes are connected to the second annular groove.
  • the invention places the medicine bottle on the handle, and pushes the piston rod in the handle through the fluid medium pushed out by the host, and finally pushes the rubber sealing plug on the medicine bottle, thereby completing the anesthetic boosting operation.
  • the medicine bottle of the present invention can be added with medicine and replaced.
  • the present invention only needs to replace the needle and the anesthetic bottle itself, and the catheter can be used continuously, thereby greatly reducing the use cost of the present invention;
  • the present invention places the driving components with larger volume and weight on the main machine, and adopts a hydraulic drive scheme.
  • the handle only needs to be placed with an execution cylinder, which can maximize the Reduce the length and weight of the handle to make it easier for doctors and nurses to use.
  • Figure 1 is a schematic structural diagram of a hydraulically driven anesthesia booster device in an embodiment of the present invention
  • Figure 2 is an exploded view of the components of the host in the embodiment of the present invention.
  • Figure 3 is a side cross-sectional view of the main machine in the embodiment of the present invention.
  • Figure 4 is an enlarged view of A in Figure 3 in an embodiment of the present invention.
  • Figure 5 is an exploded view of the handle in the embodiment of the present invention.
  • Figure 6 is a side cross-sectional view of the handle in Example 1 of the embodiment of the present invention.
  • Figure 7 is an enlarged view of B in Figure 6 in an embodiment of the present invention.
  • Figure 8 is a side cross-sectional view of the handle in Example 2 of the embodiment of the present invention.
  • Figure 9 is an enlarged view of C in Figure 8 in an embodiment of the present invention.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or a detachable connection. , or integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or a detachable connection. , or integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, or it can be an internal connection between two components.
  • a hydraulically driven anesthesia booster as shown in Figures 1 to 7, includes:
  • the main machine 1 includes a driving cylinder 11 and a pushing block 12; a first cavity 111 is provided in the driving cylinder 11, and a medium outlet 112 connecting the outside world and the first cavity 111 is provided; the pushing block 12 moves close to the first cavity 111 , sliding away from the medium outlet 112; the first cavity 111 is filled with flowing medium between the medium outlet 112 and the pushing block 12.
  • the flowing medium can be pressure oil, water, alcohol and other liquids. It is most preferred to use pressure oil to obtain the best results. Best force transmission effect.
  • the handle 2 includes an execution cylinder 21, a medicine bottle holder 22 and a piston rod 23; a second cavity 211 is provided in the execution cylinder 21, and a medium inlet 212 is provided at one end to connect the outside world and the second cavity 211; the medicine bottle holder 22 is used for Place the medicine bottle, and one end is detachably connected to the other end of the execution cylinder 21, and the other end is provided with a needle port and is detachably connected to the needle.
  • the detachable installation method at the two places can be realized by screw fixing, threaded sleeve tightening, etc.; the piston rod 23 is slidably arranged in the second cavity 211, and One end extends to the outside of the execution cylinder 21 and resists the rubber sealing plug of the medicine bottle, and the other end is provided with a fitting portion 231 that fits the inner wall of the second cavity 211 .
  • Conduit 3 is used to connect the medium outlet 112 and the medium inlet 212 .
  • the handle 2 is preferably also provided with an elastic mechanism 24.
  • the elastic mechanism 24 is sleeved on the part of the piston rod 23 located in the second cavity 211 to assist the piston rod 23 in quickly resetting.
  • this anesthesia booster is as follows: in the host machine 1, by sliding the pushing block 12 toward the medium outlet 112, the pushing block 12 can push the flowing medium out of the medium outlet 112, and the flowing medium flows in along the conduit 3.
  • the medium inlet 212 then pushes the fitting portion 231 of the piston rod 23 to move the entire piston rod 23 toward the medicine bottle, thereby pushing the rubber sealing plug on the medicine bottle and compressing the elasticity.
  • Mechanism 24 finally pushes the medicinal liquid in the medicine bottle out of the needle; after the medicinal liquid is injected, the pushing block 12 slides in the direction away from the medium outlet 112, and the flowing medium is sucked back into the driving cylinder 11 through the conduit 3, and the compressed
  • the elastic mechanism 24 will also generate elastic deformation force to push the piston rod 23 to reset, and push the flow medium out of the execution cylinder 21 to assist the flow medium to return to the drive cylinder 11.
  • the medicine bottle holder 22 is removed and the medicine bottle and needle are replaced to proceed with the next round. anaesthetization.
  • the present invention Compared with the existing desktop anesthesia pushing instrument, the present invention only needs to replace the needle and medicine bottle, and the catheter 3 can be used continuously, which greatly reduces the use cost of the present invention; compared with the existing hand-held anesthesia pushing instrument, the present invention Generally speaking, the driving components with large volume and weight are placed on the main unit 1, and a hydraulic drive scheme is adopted.
  • the handle 2 only needs to be placed with an execution cylinder 21, which can reduce the length and weight of the handle 2 as much as possible, and is convenient. Use by doctors and nurses.
  • the host computer 1 also includes a device arranged in the first cavity 111
  • the pressure gauge 13 at one end is used to monitor the pressure information of the flowing medium.
  • the pressure information is transmitted to the outside and fed back to the doctor in the form of sound, image, tactile vibration, etc.; alternatively, the host 1 can also be equipped with a drive circuit board 14 and the wiring of the pressure gauge 13 The terminals are connected to the drive circuit board 14.
  • the drive circuit board 14 has a built-in automatic control program for collecting the pressure information monitored by the pressure gauge 13, and based on the pressure information, the sliding speed of the push block 12 can be controlled in real time and accurately, so that the pressure The information is kept within the set interval, achieving smaller pressure fluctuations to achieve better injection effects and reduce patient pain.
  • the main engine 1 also includes a power base 15, a threaded sleeve 16, a power device 17 and a screw rod 18;
  • the power base 15 is detachably connected to one end of the driving cylinder 11;
  • the threaded sleeve 16 is on the power base 15 rotates along the fixed axis and is driven by the power device 17;
  • the screw rod 18 is screwed into the threaded sleeve 16, and one end of the screw rod 18 is fixedly connected to the pushing block 12.
  • This structure rotates the threaded sleeve 16 forward or reverse. By turning, the screw rod 18 can be driven to move forward or backward, thereby pushing the pushing block 12 to move.
  • the traditional hydraulic system usually realizes the movement of the flowing medium through the tank part and the control valve part. Its structure is complex and its reliability is poor. In particular, the control accuracy is too low, and it cannot adapt to high-precision medical usage scenarios. This structure is driven by the threaded cooperation between the threaded sleeve 16 and the screw rod 18.
  • the control accuracy is very high, and the threaded cooperation is self-locking, that is, the active rotation of the threaded sleeve 16 can drive the screw rod 18 to move, but the screw rod 18 Active movement is difficult or even impossible to drive the threaded sleeve 16 to rotate, so it can be stopped accurately during the working process, thereby ensuring the accuracy of the anesthetic injection amount; the power device 17 can pass
  • the overdrive circuit board 14 is connected to form a closed-loop control, so that the pressure of the entire hydraulic system can be automatically and accurately controlled.
  • this structure is simpler than the traditional hydraulic system structure, which can reduce maintenance costs and difficulty, making maintenance costs lower and maintenance more convenient.
  • the power unit 17 and the threaded sleeve 16 are preferably connected through a reduction structure, such as a reduction box, a reduction gear set, etc., so that the power unit 17 can control the number of rotations of the threaded sleeve 16 more accurately.
  • a reduction structure such as a reduction box, a reduction gear set, etc.
  • the screw rod 18 is preferably provided with a chute 181 extending along the length direction; the main machine 1 also includes a positioning pin 19 fixedly installed on the power base 15, and one end of the positioning pin 19 extends into the chute 181.
  • the positioning pin 19 can effectively prevent the screw rod 18 from rotating following the threaded sleeve 16 and make the screw rod 18 move linearly in the direction of the first cavity 111, thereby further ensuring the precise control of the threaded sleeve 16 by the power device 17.
  • the elastic mechanism 24 includes a first spring 241 that is sleeved on the piston rod 23. Both ends respectively resist the end surface of the inner wall of the second cavity 211 and the end surface of the fitting portion 231 facing the medicine bottle.
  • the structure realizes the function of the elastic mechanism 24 and reduces the manufacturing and maintenance costs of the present invention.
  • a slot 25 is preferably provided on the end surface of the inner wall of the second cavity 211 and/or the end surface of the piston rod 23 for engaging the end of the elastic mechanism 24 , thereby preventing the elastic mechanism 24 from being skewed and affecting the movement of the handle 2 normal work.
  • the medium inlet 212 is provided at the end of the execution cylinder 21, and the center line of the medium inlet 212 coincides with the center line of the piston rod 23, so that when the flowing medium enters from the medium inlet 212, it can push the end of the piston rod 23, and The main thrust action point is on the center line of the piston rod 23, thereby ensuring the smoothness of the movement of the piston rod 23.
  • the medium inlet 212 is preferably provided with a gradually expanding section 213 at one end close to the piston rod 23.
  • the gradually expanding section 213 has a hole-shaped structure that gradually expands toward the direction of the piston rod 23. After the flowing medium passes through the medium inlet 212, the gradually expanding section 213 can absorb the flowing medium.
  • a first annular groove 232 is provided on the side of the fitting portion 231; a first sealing ring 233 is provided in the first annular groove 232, and the first sealing ring 233 fits the inner wall of the execution cylinder 21 and the inner wall of the first annular groove 232; the fitting portion 231 is provided with several first through holes 234 on the end face facing the medium inlet 212. The first through holes 234 are connected to the first annular groove 232.
  • This structure allows the flowing medium to enter the first annular groove 232 through the first through holes 234, and the first through holes 234 are connected to the first annular groove 232.
  • the first sealing ring 233 is lubricated. At the same time, the flowing medium with a certain pressure can lubricate the surface and fit of the first sealing ring 233.
  • the end surface of the part 231 generates thrust, and the force-bearing area is larger, which can further ensure that the piston rod 23 can move smoothly;
  • the first through hole 234 is preferably also connected with the gradually expanding section 213, and the end surface of the fitting part 231 is connected with the execution cylinder When the end faces of the inner walls of 21 are in contact with each other, the flowing medium can also enter the first annular groove 232 through the first through hole 234 and push the first sealing ring 233, so that the piston rod 23 can be started quickly.
  • the preferred structure of the pushing block 12 includes a rear block 121 and a front block 122.
  • the rear block 121 is connected to the screw rod 18; the front block 122 faces the end surface of the rear block 121.
  • a snap-in portion 123 is provided.
  • the snap-in portion 123 extends into the rear block 121.
  • the top end of the snap-in portion 123 is provided with a thread selected into the rear block 121, thereby achieving fixation between the rear block 121 and the front block 122.
  • the clamping portion 123 can also increase the contact area between the rear block 121 and the front block 122, so that the relative position between the rear block 121 and the front block 122 can be better fixed, and the rear block can be reduced in size.
  • 121 and the front block 122 may shake during movement to ensure the normal operation of the device.
  • a second annular groove 124 is provided on the side of the rear block 121; a second sealing ring 125 is provided in the second annular groove 124; a third annular groove 126 is provided on the side of the front block 122; and a third annular groove 126 is provided in the third annular groove 126.
  • Seal ring 127 several second through holes 128 on the end face of the front block 122 facing the medium outlet 112.
  • the second through holes 128 are connected to the second annular groove 124.
  • the second through holes 128 can also allow the flowing medium to enter the second annular groove 124.
  • the second sealing ring 125 is internally lubricated. At the same time, after the flowing medium with moving pressure enters the second annular groove 124, it will generate a pressure F as shown in Figure 4 on the inner wall of the second annular groove 124.
  • the pressure F will push the rear block
  • the wall surface of 121 pushes against the clamping portion 123, causing the rear block 121 and the clamping portion 123 to directly fit closer together, and further compressing the third sealing ring 127, making the third sealing ring 127 more effective in sealing. good.
  • the elastic mechanism 24 of this embodiment includes connecting sleeves that are both sleeved on the piston rod 23. 242.
  • the second spring 243 and the third spring 244; the connecting sleeve 242 is provided with a first abutting edge 245 and a second abutting edge 246; both ends of the second spring 243 are respectively in contact with the inner wall end surface of the second cavity 211 and the first abutting edge.
  • the second abutting edge 246 extends into the second spring 243; both ends of the third spring 244 are respectively in contact with the end surface of the fitting portion 231 facing the medicine bottle and the second abutting edge 246.
  • the design principle of this structure is that through the connecting sleeve 242, part of the third spring 244 can be extended into the second spring 243, thereby effectively reducing the length of the elastic mechanism 24, further reducing the length of the handle 2, and improving the efficiency of the doctor.
  • the second spring 243 and the third spring 244 of this embodiment can share the deformation amount, and the deformation degree of the second spring 243 and the third spring 244 is only half of the first spring 241, thereby ensuring that the deformation force generated by the second spring 243 and the third spring 244 has less impact on the sliding of the piston rod 23, further ensuring the normal operation of the equipment.

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Abstract

本发明涉及麻醉助推仪技术领域，尤其涉及一种液压驱动型麻醉助推仪，包括：主机，包括驱动缸、推动块；驱动缸内设置第一空腔，且设置介质出口；推动块在第一空腔内滑动；第一空腔内，在介质出口到推动块之间充满流动介质；手柄，包括执行缸、药瓶座和活塞杆；执行缸内设置第二空腔，且一端设置介质进口；药瓶座用于放置药瓶，且一端可拆卸地与执行缸连接，另一端与针头可拆卸连接；活塞杆滑动设置在第二空腔内，且一端延伸至执行缸的外侧并抵住药瓶，另一端设置与第二空腔内壁贴合的贴合部；导管，用于连通介质出口和介质进口。本发明的一种液压驱动型麻醉助推仪，能够提升医生的操作手感并降低设备的使用成本。

Description

一种液压驱动型麻醉助推仪 技术领域
本发明涉及麻醉助推仪技术领域，尤其涉及一种液压驱动型麻醉助推仪。
背景技术
在口腔麻醉剂的注射过程中，如果药物不是缓速、均匀注入的，病人会产生较强烈的疼痛，传统计量及注射压力的控制根据手推的力，凭医生的经验控制，在注入麻药时容易造成压力太大导致组织损伤、病人疼痛等问题。因此，出现了通过机械驱动单元推动药瓶的方式，定量、定压的控制麻药注射压力及计量的麻醉助推仪，可以帮助医生解决此问题。
市场现有的麻醉助推仪主要有手持和台式两个类型。
手持式的麻醉助推仪将所有部件安装在手柄上，能够方便整体的携带，但由于药瓶、驱动单元等部件全都集中在手柄上，就会导致它的重量过重，在注射过程中控制注射也不方便，容易影响医生手部的平稳度，导致麻醉效果不好。
台式的麻醉助推仪将药瓶、驱动单元等设置在主机上，主机可以放置在桌面，然后将针尖和药瓶用导管连接，可以减轻手持部位的重量，但是由于导管有药液通过，因此只能进行一次性的使用，每注射一次，针尖、导管和药瓶都需要更换，并且由于导管长度较长，其内部残留的药液较多会造成浪费，导致装置整体的使用成本较高。
鉴于上述问题，本设计人基于从事此类产品工程应用多年丰富的实务经验及专业知识，并配合学理的运用，积极加以研究创新，设计一种液压驱动型麻醉助推仪，能够提升医生的操作手感并降低设备的使用成本。
公开于该背景技术部分的信息仅仅旨在加深对本发明的总体背景技术的理解，而不应当被视为承认或以任何形式暗示该信息构成已为本领域技术人员所公知的现有技术。
发明内容
本发明的目的就是针对现有技术中存在的缺陷提供一种液压驱动型麻醉助推仪，解决现有的麻醉助推仪对于医生的使用较为不便，以及设备的使用成本较高的问题。
为了达到上述目的，本发明所采用的技术方案是，包括：
主机，包括驱动缸和推动块；所述驱动缸内设置第一空腔，且设置连通外界和所述第一空腔的介质出口；所述推动块在所述第一空腔内作靠近、远离所述介质出口的滑动；所述第一空腔内，在所述介质出口到所述推动块之间充满流动介质；
手柄，包括执行缸、药瓶座和活塞杆；所述执行缸内设置第二空腔，且一端设置连通外界和所述第二空腔的介质进口；所述药瓶座用于放置药瓶，且一端可拆卸地与所述执行缸的另一端连接，另一端与针头可拆卸连接；所述活塞杆滑动设置在所述第二空腔内，且一端延伸至所述执行缸的外侧并抵住药瓶，另一端设置与所述第二空腔内壁贴合的贴合部；
导管，用于连通所述介质出口和所述介质进口。
进一步地，所述手柄还包括弹性机构，所述弹性机构套装在所述活塞杆上位于所述第二空腔内的部分。
进一步地，所述主机还包括设置在所述第一空腔一端的压力计，用于监测流动介质的压力信息。
进一步地，所述主机还包括驱动电路板，用于收集所述压力计监测的压力信息，并根据所述压力信息控制所述推动块的滑动速度，使所述压力信息保持在设定区间内。
进一步地，所述主机还包括动力座、螺纹套、动力装置和丝杆；所述动力座与所述驱动缸一端可拆卸连接；所述螺纹套在所述动力座上沿定轴转动，并由所述动力装置带动转动；所述丝杆旋入所述螺纹套内，且所述丝杆的一端与所述推动块固定连接；所述丝杆设置沿长度方向延伸的滑槽；所述主机还包括固定安装在所述动力座上的定位销，且所述定位销一端伸入所述滑槽中。
进一步地，所述弹性机构包括套设在所述活塞杆上的第一弹簧，两端分别抵住所述第二空腔内壁端面和所述贴合部端面。
进一步地，所述弹性机构包括均套设在所述活塞杆上的连接套、第二弹簧和第三弹簧；所述连接套设置第一抵接缘和第二抵接缘；所述第二弹簧两端分别与所述第二空腔内壁端面和所述第一抵接缘抵接；所述第二抵接缘伸入所述第二弹簧内；所述第三弹簧两端分别与所述贴合部端面和所述第二抵接缘抵接。
进一步地，所述第二空腔内壁端面和/或所述活塞杆端面设置卡槽，用于卡接所述弹性机构的端部。
进一步地，所述介质进口设置在所述执行缸的端部，且所述介质进口中心线与所述活塞杆中心线重合，流动介质从所述介质进口进入时，推动所述活塞杆的端部。
进一步地，所述介质进口靠近所述活塞杆一端设置渐扩段，所述渐扩段呈朝向所述活塞杆方向逐渐扩展的孔型结构。
进一步地，所述贴合部侧面设置第一环槽；所述第一环槽内设置第一密封圈；所述贴合部朝向所述介质进口的端面设置若干个第一通孔，所述第一通孔连通所述第一环槽。
进一步地，所述推动块包括后块体和前块体；所述前块体朝向所述后块体的端面上设置卡接部，所述卡接部伸入所述后块体中；所述后块体侧面设置第二环槽；所述第二环槽内设置第二密封圈；所述前块体侧面设置第三环槽；所述第三环槽内设置第三密封圈；所述前块体朝向所述介质出口的端面若干个第二通孔，所述第二通孔连通所述第二环槽。
通过本发明的技术方案，可实现以下技术效果：
本发明通过将药瓶放置在手柄上，并通过主机推出的流体介质来推动手柄内的活塞杆，最终实现对药瓶上的橡胶密封塞的推动，从而完成麻药的助推作业。本发明的药瓶可加药可更换，相较于现有台式推麻仪来说，本发明仅需对针头及麻药瓶本身进行更换，导管可以持续使用，从而大大减少本发明的使用成本；本发明相较于现有手持式推麻仪来说，将体积、重量较大的驱动元件均放置在了主机上，并且采用液压驱动的方案，手柄只需要放一个执行缸，能够尽可能地减少手柄的长度及重量，方便医生护士的使用。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明中记载的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例中液压驱动型麻醉助推仪的结构示意图；
图2为本发明实施例中主机的部件拆分图；
图3为本发明实施例中主机的侧面剖视图；
图4为本发明实施例中图3的A处放大图；
图5为本发明实施例中手柄的部件拆分图；
图6为本发明实施例中实施例一的手柄侧面剖视图；
图7为本发明实施例中图6的B处放大图；
图8为本发明实施例中实施例二的手柄侧面剖视图；
图9为本发明实施例中图8的C处放大图；
附图标记：主机1、驱动缸11、第一空腔111、介质出口112、推动块12、后块体121、前块体122、卡接部123、第二环槽124、第二密封圈125、第三环槽126、第三密封圈127、第二通孔128、压力计13、驱动电路板14、动力座15、螺纹套16、动力装置17、丝杆18、滑槽181、定位销19、手柄2、执行缸21、第二空腔211、介质进口212、渐扩段213、药瓶座22、活塞杆23、贴合部231、第一环槽232、第一密封圈233、第一通孔234、弹性机构24、第一弹簧241、连接套242、第二弹簧243、第三弹簧244、第一抵接缘245、第二抵接缘246、卡槽25、导管3。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。
在本发明的描述中，需要说明的是，属于“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或者位置关系为基于附图所示的方位或者位置关系，仅是为了便于描述本发明和简化描述，而 不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如可以是固定连接，也可以是可拆卸连接，或一体式连接；可以是机械连接，也可以是电连接；可以是直接连接，也可以是通过中间媒介间接连接，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
实施例一
一种液压驱动型麻醉助推仪，如图1～7所示，包括：
主机1，包括驱动缸11和推动块12；驱动缸11内设置第一空腔111，且设置连通外界和第一空腔111的介质出口112；推动块12在第一空腔111内作靠近、远离介质出口112的滑动；第一空腔111内，在介质出口112到推动块12之间充满流动介质，流动介质可以是压力油、水、酒精等液体，最优选使用压力油来获得最佳的传力效果。
手柄2，包括执行缸21、药瓶座22和活塞杆23；执行缸21内设置第二空腔211，且一端设置连通外界和第二空腔211的介质进口212；药瓶座22用于放置药瓶，且一端可拆卸地与执行缸21的另一端连接，另一端设置插针口并与针头可拆卸连接，针头安装后其尾部会伸入药瓶座22中并扎入药瓶，从而使药瓶内的药液能够流入针头中，两处的可拆卸安装方式可以通过螺钉固定、螺纹螺套配合旋紧等多种形式实现；活塞杆23滑动设置在第二空腔211内，且一端延伸至执行缸21的外侧并抵住药瓶的橡胶密封塞，另一端设置与第二空腔211内壁贴合的贴合部231。
导管3，用于连通介质出口112和介质进口212。
手柄2优选还设置有弹性机构24，弹性机构24套装在活塞杆23上位于第二空腔211内的部分，用于辅助活塞杆23快速复位。
具体的，本麻醉助推仪的工作原理如下：在主机1中，通过将推动块12向介质出口112滑动，则推动块12就可以将流动介质推出介质出口112，流动介质顺着导管3流入介质进口212，再推动活塞杆23的贴合部231，使活塞杆23整体向药瓶方向移动，从而可以推动药瓶上的橡胶密封塞，并压缩弹性 机构24，最终将药瓶内的药液从针头推出；药液打完后，推动块12向远离介质出口112的方向滑动，将流动介质通过导管3吸回驱动缸11内，并且已经压缩的弹性机构24也会产生弹性形变力推动活塞杆23复位，并且将流动介质推出执行缸21辅助流动介质返回驱动缸11内，之后拆下药瓶座22更换药瓶和针头即可进行下一轮的麻醉。本发明相较于现有台式推麻仪来说，仅需对针头及药瓶进行更换，导管3可以持续使用，大大减少本发明的使用成本；本发明相较于现有手持式推麻仪来说，将体积、重量较大的驱动元件均放置在了主机1上，并且采用液压驱动的方案，手柄2只需要放一个执行缸21，能够尽可能地减少手柄2的长度及重量，方便医生护士的使用。
在麻醉过程中，注入麻药的压力如果太大，就会导致组织损伤、病人疼痛等问题，需要对流动介质的压力进行监测，因此优选地，在主机1还包括了设置在第一空腔111一端的压力计13，用于监测流动介质的压力信息，压力信息传输至外部以声音、图像、触觉震动等形式反馈给医生；或者，主机1还可以设置驱动电路板14，压力计13的接线端子连接到驱动电路板14上，驱动电路板14内置有自动控制程序，用于收集压力计13监测的压力信息，并根据压力信息能够实时地、准确地控制推动块12的滑动速度，使压力信息保持在设定区间内，实现较小的压力波动，以实现更好的注射效果和减轻病人的痛苦。
作为带动推动块12运动的一种优选结构，主机1还包括动力座15、螺纹套16、动力装置17和丝杆18；动力座15与驱动缸11一端可拆卸连接；螺纹套16在动力座15上沿定轴转动，并由动力装置17带动转动；丝杆18旋入螺纹套16内，且丝杆18的一端与推动块12固定连接，这种结构通过使螺纹套16正转或者反转，就能够带动丝杆18产生向前或向后的移动，从而推动推动块12产生运动。
传统的液压系统通常通过油箱部分及控制阀部分来实现流动介质的运动，其结构复杂，可靠性较差，尤其是控制精度过低，无法适应医用的高精度使用场景。而本结构通过螺纹套16和丝杆18的螺纹配合进行推动，控制精度很高，并且螺纹配合带有自锁性，即螺纹套16的主动转动可以带动丝杆18运动，但丝杆18的主动运动很难、甚至无法带动螺纹套16产生转动，因此在工作过程中可以实现精准地停止，进而保证麻药注射量的精准度；动力装置17可以通 过驱动电路板14连接形成闭环控制，使整个液压系统的压力能够自动进行精确的控制。并且，本结构相对于传统的液压系统结构更加简洁，能够降低维修成本和维修难度，使维修成本更低，维修更加方便。动力装置17和螺纹套16之间优选通过减速结构进行传动连接，比如使用减速箱、减速齿轮组等方式，从而使动力装置17能够对螺纹套16的转动圈数进行更加精确的控制。
丝杆18优选设置有沿长度方向延伸的滑槽181；主机1还包括固定安装在动力座15上的定位销19，且定位销19一端伸入滑槽181中，在螺纹套16转动的过程中，定位销19可以有效防止丝杆18跟随螺纹套16产生转动，并使丝杆18向第一空腔111方向进行直线运动，从而进一步地保证动力装置17对螺纹套16的精确控制。
本实施例中，弹性机构24包括套设在活塞杆23上的第一弹簧241，两端分别抵住第二空腔211内壁端面和贴合部231朝向药瓶的端面，能够通过最简洁的结构实现弹性机构24的功能，减少本发明的制作和维护成本。
在手柄2中，在第二空腔211内壁端面和/或活塞杆23端面优选设置有卡槽25，用于卡接弹性机构24的端部，从而避免弹性机构24产生歪斜，影响手柄2的正常工作。
优选的，介质进口212设置在执行缸21的端部，且介质进口212中心线与活塞杆23中心线重合，则可以使流动介质从介质进口212进入时，推动活塞杆23的端部，并且主要的推力的作用点在活塞杆23的中心线上，从而保证活塞杆23运动时的平稳性。介质进口212优选在靠近活塞杆23一端设置渐扩段213，渐扩段213呈朝向活塞杆23方向逐渐扩展的孔型结构，在流动介质通过介质进口212后，渐扩段213可以将流动介质均匀地扩散开，使手柄2在启动时，流动介质对活塞杆23的作用面积更大，从而避免活塞杆23受到突变的集中受力产生晃动等情况，影响医生护士手部的平稳度。优选在贴合部231侧面设置第一环槽232；在第一环槽232内设置第一密封圈233，第一密封圈233贴合执行缸21内壁和第一环槽232内壁；贴合部231朝向介质进口212的端面设置若干个第一通孔234，第一通孔234连通第一环槽232，此结构可以使流动介质通过第一通孔234进入第一环槽232内，对第一密封圈233进行润滑，同时，具有一定压力的流动介质能够对第一密封圈233表面和贴合 部231的端面都产生推力，受力面积更大，能更进一步地保证活塞杆23能够平稳地运动；第一通孔234优选还与渐扩段213连通，在贴合部231端面与执行缸21内壁端面贴合的情况下，流动介质也能够通过第一通孔234进入第一环槽232内推动第一密封圈233，可以使活塞杆23快速启动。
为了方便推动块12的制造和安装，推动块12的优选结构包括后块体121和前块体122，后块体121与丝杆18相连接；前块体122朝向后块体121的端面上设置卡接部123，卡接部123伸入后块体121中，卡接部123的顶端设置选入后块体121内的螺纹，从而实现后块体121和前块体122之间的固定，同时，卡接部123还可以增加后块体121和前块体122之间的接触面积，使后块体121和前块体122之间的相对位置保持更好地固定，减少后块体121和前块体122在移动过程中可能产生的晃动，保证装置的正常运行。优选地，在后块体121侧面设置第二环槽124；第二环槽124内设置第二密封圈125；前块体122侧面设置第三环槽126；第三环槽126内设置第三密封圈127；前块体122朝向介质出口112的端面若干个第二通孔128，第二通孔128连通第二环槽124，第二通孔128同样可以使流动介质进入第二环槽124内润滑第二密封圈125，同时，具有移动压力的流动介质进入第二环槽124后，会对第二环槽124的内壁产生如图4所示的压力F，压力F会将后块体121的壁面推向卡接部123，使后块体121和卡接部123直接贴合地更紧，并且也能够对第三密封圈127产生进一步的压缩，使第三密封圈127密封效果更好。
实施例二
一种液压驱动型麻醉助推仪，如图1～5和图8～9所示，与实施例一不同的是，本实施例的弹性机构24包括均套设在活塞杆23上的连接套242、第二弹簧243和第三弹簧244；连接套242设置第一抵接缘245和第二抵接缘246；第二弹簧243两端分别与第二空腔211内壁端面和第一抵接缘245抵接；第二抵接缘246伸入第二弹簧243内；第三弹簧244两端分别与贴合部231朝向药瓶的端面和第二抵接缘246抵接。本结构的设计原理是，通过连接套242，可以使第三弹簧244的部分伸入第二弹簧243内部，从而有效地减少弹性机构24的长度，进而能够进一步地减少手柄2的长度，提升医生护士的使用舒适度；同时，随着弹簧被压缩地越紧，其产生的弹性形变的反作用力就会越大， 作用在活塞杆23上，就会与流动介质的推力产生抵消，随着活塞杆23的移动，就会导致流动介质对活塞杆23的推动能力产生较大的下降，而本结构通过连接套242，在与实施例一的弹性机构24产生同样的压缩量的下，本实施例的第二弹簧243和第三弹簧244可以分摊形变量，第二弹簧243和第三弹簧244的形变程度仅有第一弹簧241的一半，从而保证第二弹簧243和第三弹簧244产生的形变力对活塞杆23的滑动影响更小，进一步保证设备的正常运行。
以上显示和描述了本发明的基本原理、主要特征及优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (12)

  1. 一种液压驱动型麻醉助推仪，其特征在于，包括：
    主机(1)，包括驱动缸(11)和推动块(12)；所述驱动缸(11)内设置第一空腔(111)，且设置连通外界和所述第一空腔(111)的介质出口(112)；所述推动块(12)在所述第一空腔(111)内作靠近、远离所述介质出口(112)的滑动；所述第一空腔(111)内，在所述介质出口(112)到所述推动块(12)之间充满流动介质；
    手柄(2)，包括执行缸(21)、药瓶座(22)和活塞杆(23)；所述执行缸(21)内设置第二空腔(211)，且一端设置连通外界和所述第二空腔(211)的介质进口(212)；所述药瓶座(22)用于放置药瓶，且一端可拆卸地与所述执行缸(21)的另一端连接，另一端与针头可拆卸连接；所述活塞杆(23)滑动设置在所述第二空腔(211)内，且一端延伸至所述执行缸(21)的外侧并抵住药瓶，另一端设置与所述第二空腔(211)内壁贴合的贴合部(231)；
    导管(3)，用于连通所述介质出口(112)和所述介质进口(212)。
  2. 根据权利要求1所述的液压驱动型麻醉助推仪，其特征在于，所述手柄(2)还包括弹性机构(24)，所述弹性机构(24)套装在所述活塞杆(23)上位于所述第二空腔(211)内的部分。
  3. 根据权利要求1所述的液压驱动型麻醉助推仪，其特征在于，所述主机(1)还包括设置在所述第一空腔(111)一端的压力计(13)，用于监测流动介质的压力信息。
  4. 根据权利要求3所述的液压驱动型麻醉助推仪，其特征在于，所述主机(1)还包括驱动电路板(14)，用于收集所述压力计(13)监测的压力信息，并根据所述压力信息控制所述推动块(12)的滑动速度，使所述压力信息保持在设定区间内。
  5. 根据权利要求1所述的液压驱动型麻醉助推仪，其特征在于，所述主机(1)还包括动力座(15)、螺纹套(16)、动力装置(17)和丝杆(18)；所述动力座(15)与所述驱动缸(11)一端可拆卸连接；所述螺纹套(16)在所述动力座(15)上沿定轴转动，并由所述动力装置(17)带动转动；所述丝 杆(18)旋入所述螺纹套(16)内，且所述丝杆(18)的一端与所述推动块(12)固定连接；所述丝杆(18)设置沿长度方向延伸的滑槽(181)；所述主机(1)还包括固定安装在所述动力座(15)上的定位销(19)，且所述定位销(19)一端伸入所述滑槽(181)中。
  6. 根据权利要求2所述的液压驱动型麻醉助推仪，其特征在于，所述弹性机构(24)包括套设在所述活塞杆(23)上的第一弹簧(241)，两端分别抵住所述第二空腔(211)内壁端面和所述贴合部(231)端面。
  7. 根据权利要求2所述的液压驱动型麻醉助推仪，其特征在于，所述弹性机构(24)包括均套设在所述活塞杆(23)上的连接套(242)、第二弹簧(243)和第三弹簧(244)；所述连接套(242)设置第一抵接缘(245)和第二抵接缘(246)；所述第二弹簧(243)两端分别与所述第二空腔(211)内壁端面和所述第一抵接缘(245)抵接；所述第二抵接缘(246)伸入所述第二弹簧(243)内；所述第三弹簧(244)两端分别与所述贴合部(231)端面和所述第二抵接缘(246)抵接。
  8. 根据权利要求2所述的液压驱动型麻醉助推仪，其特征在于，所述第二空腔(211)内壁端面和/或所述活塞杆(23)端面设置卡槽(25)，用于卡接所述弹性机构(24)的端部。
  9. 根据权利要求1所述的液压驱动型麻醉助推仪，其特征在于，所述介质进口(212)设置在所述执行缸(21)的端部，且所述介质进口(212)中心线与所述活塞杆(23)中心线重合，流动介质从所述介质进口(212)进入时，推动所述活塞杆(23)的端部。
  10. 根据权利要求9所述的液压驱动型麻醉助推仪，其特征在于，所述介质进口(212)靠近所述活塞杆(23)一端设置渐扩段(213)，所述渐扩段(213)呈朝向所述活塞杆(23)方向逐渐扩展的孔型结构。
  11. 根据权利要求10所述的液压驱动型麻醉助推仪，其特征在于，所述贴合部(231)侧面设置第一环槽(232)；所述第一环槽(232)内设置第一密封圈(233)；所述贴合部(231)朝向所述介质进口(212)的端面设置若干个第一通孔(234)，所述第一通孔(234)连通所述第一环槽(232)。
  12. 根据权利要求1所述的液压驱动型麻醉助推仪，其特征在于，所述推动块(12)包括后块体(121)和前块体(122)；所述前块体(122)朝向所述后块体(121)的端面上设置卡接部(123)，所述卡接部(123)伸入所述后块体(121)中；所述后块体(121)侧面设置第二环槽(124)；所述第二环槽(124)内设置第二密封圈(125)；所述前块体(122)侧面设置第三环槽(126)；所述第三环槽(126)内设置第三密封圈(127)；所述前块体(122)朝向所述介质出口(112)的端面若干个第二通孔(128)，所述第二通孔(128)连通所述第二环槽(124)。
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CN114712659A (zh) * 2022-04-20 2022-07-08 常州赛乐医疗技术有限公司 一种液压驱动型麻醉助推仪

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CN119124840A (zh) * 2024-11-15 2024-12-13 兰州大学 一种适用于古代壁画的强度损失检测装置

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