CN110652347A - Electric intraosseous infusion system - Google Patents
Electric intraosseous infusion system Download PDFInfo
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- CN110652347A CN110652347A CN201910771072.9A CN201910771072A CN110652347A CN 110652347 A CN110652347 A CN 110652347A CN 201910771072 A CN201910771072 A CN 201910771072A CN 110652347 A CN110652347 A CN 110652347A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3472—Trocars; Puncturing needles for bones, e.g. intraosseus injections
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
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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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
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Abstract
The invention provides an electric intraosseous infusion system which comprises an infusion needle component and a puncture control component. The transfusion needle component comprises a transfusion needle component, a puncture needle component and a shell component; the puncture control part is gun-shaped and is provided with a launching bin and a power bin, and the launching bin comprises a magazine type needle storage box internally provided with an automatic push pin assembly, a shell throwing assembly arranged at the front end of the magazine type needle storage box and a shell throwing window arranged above the shell throwing assembly; the power bin comprises a needle pushing bin and a power supply bin, the needle pushing bin is internally provided with a power assembly, a transmission assembly, a depth limiting baffle, a sliding cover plate, an adjustable depth limiting indicating assembly and a depth limiting baffle limiting mechanism, one end of the transmission assembly is connected with the power assembly, the other end of the transmission assembly is matched with the sleeve, the depth limiting baffle is installed on the transmission assembly, one end of the sliding cover plate is fixedly connected with the depth limiting baffle, and the other end of the sliding cover plate can cover the shell throwing window under the pushing of the depth limiting; the power supply bin is internally provided with a power supply, and the outer wall of the power supply bin is provided with a trigger button.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an electric intraosseous infusion system for quickly establishing a liquid resuscitation channel during emergency rescue.
Background
The infusion path is quickly established in the rescue, and the infusion and the administration treatment are ensured to play an important role. The marrow cavity infusion technology is the only non-venous infusion means at present, and compared with the traditional venous infusion technology, the marrow cavity infusion technology has the advantages of convenience, rapidness, safety, high success rate, no need of long-term professional training for operating personnel and the like. The technology expands an effective needle application area from several millimeters of veins to 4-5 centimeters of a flat bone area, so that the positioning of patients with vein collapse is easier, the success rate of needle application is higher, the needle application can be rapidly realized even in a rescue scene and during transportation, the needle application can be completed within several seconds by matching with needle application auxiliary equipment, the effective transfusion speed can be reached within 1 minute, and the technology has greater advantages in the emergency treatment of critically ill patients with the teaching efficiency. Especially under complex environments such as earthquake, fire, major traffic accident site, battlefield and the like and the condition of lack of professional medical care personnel, the liquid resuscitator has important significance for timely and effectively performing liquid resuscitation and life saving on batch or critically ill patients in 1 hour of gold.
The currently used clinical intraosseous infusion devices include manual FAST1 systems, catapult BIG systems, and electric EZ-IO systems. Manual formula FAST1 system and ejection type BIG system rely on the quick-witted manpower and spring mechanical force to puncture, have the technical requirement to the operator higher, operating time is longer, and easily arouse puncture position fracture, violent pain, transfusion needle fracture scheduling problem, can drop because of the transfusion needle that the power inequality or operating personnel mistake lead to the transfusion needle that the transfusion needle is fixed insecure simultaneously, the weeping further arouses serious complication such as periosteum syndrome.
The electric EZ-IO system enables the infusion needle to be punctured into bone marrow in a rotating mode through electric power, the defects of the first two intraosseous infusion systems are overcome, the system needs to manually install the infusion needle on a drill bit in advance and puncture the infusion needle after the infusion needle protective sleeve is taken down, therefore, the system is high in sterilization operation requirement, puncture needles with different lengths need to be prepared according to different puncture positions, and the system is inconvenient to carry outside.
Disclosure of Invention
The invention aims to solve the technical problems and provides an electric intraosseous infusion system which can store a plurality of infusion needles simultaneously and has adjustable puncture depth. In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the electric intraosseous infusion system provided by the invention has the following technical characteristics: has an infusion needle assembly including an infusion needle assembly, a puncture needle assembly and a housing assembly. The transfusion needle component comprises a hollow transfusion needle and a hollow joint; the puncture needle assembly comprises a puncture needle inserted into the hollow transfusion needle and a sleeve with the head end arranged on the periphery of the hollow joint; the tail end of the shell component is connected with the outer wall of the sleeve in a point-section mode.
The puncture control part is gun-shaped and is provided with a launching bin and a power bin, and the launching bin comprises a magazine type needle storage box internally provided with an automatic push pin assembly, a shell throwing assembly arranged at the front end of the magazine type needle storage box and a shell throwing window arranged above the shell throwing assembly; the power bin comprises a needle pushing bin and a power supply bin, the needle pushing bin is internally provided with a power assembly, a transmission assembly, a depth limiting baffle, a sliding cover plate, an adjustable depth limiting indicating assembly and a depth limiting baffle limiting mechanism, one end of the transmission assembly is connected with the power assembly, the other end of the transmission assembly is matched with the sleeve, the depth limiting baffle is installed on the transmission assembly, one end of the sliding cover plate is fixedly connected with the depth limiting baffle, and the other end of the sliding cover plate can cover the shell throwing window under the pushing of the depth limiting; the power supply bin is internally provided with a power supply, and the outer wall of the power supply bin is provided with a trigger button.
Preferably, in the electric intraosseous infusion system provided by the invention, the outer wall of the hollow joint is provided with an external thread; the sleeve head end and the tail end are arranged at intervals, an internal thread is arranged in the head end, and a hexagon socket is arranged in the tail end. The head end of the shell component is made of soft materials, and the rest parts are made of hard materials.
Preferably, in the electric intraosseous infusion system provided by the invention, the magazine type needle storage box is detachably mounted on the bore of the firing chamber in a manner of matching the projection and the groove. The automatic push pin assembly comprises a spring and a push pin plate, one end of the spring is fixedly connected with the inner wall of the needle storage box, and the other end of the spring is fixedly connected with the bottom wall of the push pin plate. The ejection component is provided with a push plate, the upper end face of the push plate is in contact with the shell component, and a spring is arranged on the lower end face of the push plate.
Preferably, in the electric intraosseous infusion system provided by the invention, an infusion needle through hole is arranged on the side wall of the head end of the launching bin, the diameter of the infusion needle through hole is smaller than that of the shell component, so that the shell component abuts against the side wall to realize the separation between the puncture needle component and the shell component.
Preferably, in the electric intraosseous infusion system provided by the invention, the power component is a motor in the needle pushing bin; the transmission assembly comprises a gear transmission shaft and a needle pushing shaft, one end of the gear transmission shaft is connected with an output shaft of the motor, and the other end of the gear transmission shaft is provided with a gear; the tail end of the needle pushing shaft is meshed with the gear, and the head end of the needle pushing shaft is hexagonal and matched with the tail end of the sleeve. The depth stop piece is mounted at the middle part of the needle pushing shaft. This is a first implementation.
Preferably, in the electric intraosseous infusion system provided by the invention, the needle pushing bin is provided with a transmission assembly which is a ball screw assembly and comprises a screw, a nut, a ball returning device and a nut seat. The screw rod is used as a needle pushing shaft, an arc spiral groove is formed in the rear half part of the screw rod, the wall surface of the front half part is smooth, and the head end of the screw rod is hexagonal; the depth-limiting baffle is arranged at the tail end of the front half part. This is a second implementation.
In the present invention, the needle pushing shaft is preferably linearly moved in a rotational manner, which facilitates smooth penetration of a hard part.
Preferably, in the electric intraosseous infusion system provided by the invention, the adjustable depth-limiting indicating assembly comprises a rack chute, a rack, a gear type adjusting rotation and an indicating sheet, wherein the rack chute is arranged on the inner wall of the push needle bin, the gear type adjusting rotation is arranged at one end of the rack, the indicating sheet is arranged on the middle part of the rack, the indicating sheet is provided with an indicating mark, and the wall of the push needle bin is provided with a plurality of indicating mark display holes.
Preferably, in the electric intraosseous infusion system provided by the invention, the depth limiting blocking plate limiting mechanism comprises two limiting switches, one limiting switch is arranged on the indicating sheet and used for limiting the stroke position of the depth limiting blocking plate, and the other limiting switch is arranged on the inner wall of the needle pushing bin and used for limiting the initial position of the depth limiting blocking plate.
Preferably, in the electric intraosseous infusion system provided by the invention, the power supply is a battery, and the outer wall of the power supply bin is also provided with a motor switch.
Action and Effect of the invention
Compared with the prior art, the electric intraosseous infusion system has the following technical effects:
firstly, because the launching bin is internally provided with the magazine type needle storage box with the automatic needle pushing assembly, the needle storage box can store a plurality of infusion needle components at one time, and the automatic needle pushing assembly can automatically enable the infusion needle to automatically enter the launching track without repeated manual installation of the infusion needle, the rapidness and the convenience of puncture are improved, and the batch wounded treatment is facilitated.
Secondly, because power component and transmission assembly are arranged in the power bin, after the trigger button of the power bin is triggered, the power component pushes the transmission assembly to be matched with the sleeve of the infusion needle component and pushes the infusion needle component to move forwards until the shell component is abutted against the front wall of the launching bin, and then the infusion needle component and the tip part of the puncture needle component are pushed out of the launching bin to be pushed towards the pre-puncture part until the bone marrow is reached. The invention does not need to manually install the transfusion needle, ensures the sterile safety in the puncture process, avoids the environmental or artificial pollution, improves the puncture safety, and solves the problems that the prior electric intraosseous transfusion device needs to manually install the transfusion needle on the drill bit and needs to puncture after the transfusion needle protective sleeve is taken down, so that the disinfection requirement is high.
Thirdly, due to the fact that the adjustable depth limiting indication assembly can be adjusted according to a puncture position before puncture, the limiting mechanism can limit the forward moving position and the initial position of the depth limiting blocking piece, and the power assembly and the transmission assembly stop working when the depth limiting blocking piece moves to a preset position, on one hand, the system can adopt closed infusion needles with uniform length, infusion needles with different positions do not need to be specially prepared, and portability of the system is improved; on the other hand, different depths can be selected according to the puncture position, and the operating personnel can use the system only by simple training, so that the practicability of the system is greatly improved.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the invention showing an electrical intraosseous infusion system;
FIG. 2 is a schematic view showing the construction of an infusion needle unit in the embodiment of the present invention;
FIG. 3 is a schematic view of an external structure of a magazine type needle magazine according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of one of the drive assemblies in an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an adjustable depth stop indicator assembly according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a circuit structure for controlling the forward rotation and the reverse rotation of the motor by the trigger button.
Detailed Description
The present invention will be described in detail below with reference to examples and the accompanying drawings. The following examples should not be construed as limiting the scope of the invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Fig. 1 is a schematic view of the overall structure of an electric intraosseous infusion system in an embodiment of the present invention.
As shown in FIG. 1, the electric intraosseous infusion system 100 includes two parts, an infusion needle unit 1 and a puncture operating unit 2, wherein the infusion needle unit 1 is mounted inside the puncture operating unit 2 and a puncture operation is performed by the puncture operating unit 2.
Fig. 2 is a schematic structural view of an infusion needle part in an embodiment of the present invention.
As shown in FIG. 2, infusion needle assembly 1 comprises an infusion needle assembly 3, a puncture needle assembly 4 and a housing assembly 5. Infusion needle subassembly 3 includes cavity infusion needle 301 and cavity connects 302, is provided with the external screw thread on the cavity connects 302 outer wall, combines with puncture needle subassembly 4's sleeve when carrying out the puncture, and the puncture finishes taking out puncture needle subassembly 4 back, combines with infusion pipe connector, begins to infuse.
The needle assembly 4 includes a needle 401 and a sleeve 402. The puncture needle 401 is a solid needle and is inserted into the hollow infusion needle 301, and the infusion needle assembly is driven to penetrate through skin tissues and bone structures during puncture; the sleeve 402 has a head end portion with internal threads formed on an inner wall thereof for connection to the hollow connector 302, and a tail end portion spaced from the head end portion and having a hexagonal socket formed therein.
As shown in fig. 1, the puncture operating member 2 has a gun shape having a shooting chamber 6 and a power chamber 7. The launching bin comprises a detachable magazine type needle storage box 8, a shell throwing component 9 arranged at the front end of the magazine type needle storage box 8 and a shell throwing window 10 arranged above the shell throwing component. The power bin 7 comprises a needle pushing bin 11 and a power supply bin 12, wherein a power assembly 13, a transmission assembly 14, a depth limiting baffle 15 arranged on the transmission assembly, a sliding cover plate 16, an adjustable depth limiting indicating assembly 17 and a depth limiting baffle limiting mechanism 18 are arranged in the needle pushing bin 11; the power supply cabin 12 is internally provided with a power supply 19, and the outer wall of the power supply cabin is provided with a trigger button 20 and a motor switch.
According to fig. 1 and 3, the magazine 8 is detachably mounted in the chamber of the firing chamber in a manner that the projections and recesses match, or alternatively the magazine of the pistol is mounted in the chamber. The automatic push needle assembly 81 is arranged in the automatic push needle assembly, arc-shaped protrusions 82 are symmetrically arranged at the top ends of the two side walls, the infusion needle component at the topmost end in the box is blocked, and the infusion needle component is prevented from falling from the needle storage box under the pushing of the automatic push needle assembly 81. The automatic needle pushing assembly 81 comprises a spring 811 and a needle pushing plate 812, wherein one end of the spring 811 is fixedly connected with the inner wall of the needle storage box, and the other end of the spring is fixedly connected with the bottom wall of the needle pushing plate 812.
In this embodiment, when the magazine type needle magazine 8 is mounted, the uppermost needle member is positioned right at the center of the bore and corresponds to the driving unit 14. When the uppermost infusion needle member is pushed out of the magazine type needle storage case 8 by the driving unit 14, the automatic needle pushing unit 81 automatically pushes up the second infusion needle member 1.
The ejection housing assembly 9 is in the shape of a cuboid, with an upper push plate 91 mounted by a spring 92. When the infusion needle assembly 1 is pushed above the ejection window, the push-up plate 91 ejects the casing through the ejection window 10 under the restoring force of the spring 92 after the transmission assembly 14 pushes the infusion needle assembly 3 and the puncture needle assembly 4 out of the casing assembly 5 and the puncturing operation is completed. The length of the container bay 10 is from 1/2 to 2/3, preferably 2/3, of the length of the housing assembly 5.
In order to realize smooth puncture, an infusion needle passing hole 61 is arranged on the side wall of the head end of the launching bin, and the diameter of the infusion needle passing hole is smaller than that of the shell component 5.
The shell of the needle pushing bin 11 and the shell of the power supply bin 12 are integrally formed with the launching bin 6. In the push pin bin 11, the form of the power component 13 and the form of the transmission component 14 are two, the first form is similar to the gear shaft structure shown in fig. 4, and the power component 13 is a motor; the transmission assembly 14 includes a gear transmission shaft 141 and a needle pushing shaft 142, one end of the gear transmission shaft 141 is connected with an output shaft of the motor 13, and the other end is provided with a gear 141 a; the tail end of the needle pushing shaft is engaged with the gear, and the head end is hexagonal and matched with the tail end of the sleeve 402. When the motor is started, the gear transmission shaft 141 is driven to rotate, and the needle pushing shaft 142 is meshed with the gear transmission shaft 141 and driven by the gear transmission shaft to linearly move in a rotating mode.
The second form is a ball screw form, and the transmission assembly is a ball screw assembly and comprises a screw rod, a nut, a ball returning device and a nut seat. The screw rod is used as a needle pushing shaft, an arc spiral groove is formed in the rear half part of the screw rod, the wall surface of the front half part is smooth, and the head end of the screw rod is hexagonal; the depth-limiting baffle is arranged at the tail end of the front half part.
In this embodiment, the needle-pushing shaft is preferably linearly moved in a rotational manner, because the puncture needle is also pushed by the needle-pushing shaft to perform the puncture operation in the medullary cavity, and the rotational movement is more advantageous for the puncture operation, particularly for the puncture site with a hard bone surface.
Of course, a linear movement mode may also be adopted, in which the power assembly 13 is a linear motor, the transmission assembly 14 is a linear cylinder, and the head end of the piston rod is hexagonal.
The depth-limiting baffle 15 is arranged on the middle part of the needle pushing shaft or the linear cylinder piston rod, and the upper end of the depth-limiting baffle is fixedly connected with the tail end of the sliding cover plate 16; the sliding cover plate 16 is arranged on the inner wall of the push needle bin through a sliding groove, the head end of the sliding cover plate is flush with the tail end of the casing throwing window 10 in a normal state, and the casing throwing window is covered under the pushing of the depth limiting blocking piece 15 during puncture operation to prevent the transfusion needle component 1 from falling off.
According to fig. 1 and 5, the adjustable depth-limiting indicating assembly 17 is arranged in front of the power supply bin, is of a gear-rack structure, and comprises a rack sliding groove 171 arranged on the inner wall of the needle pushing bin, a rack 172, a gear-type adjusting rotation 173 arranged at one end of the rack, and an indicating sheet 174 arranged on the middle part of the rack. The indication sheet 174 is provided with an indication mark 174a, and the wall of the push pin bin is provided with a plurality of indication mark display holes.
The puncture part of the intraosseous infusion comprises a proximal humerus end, a proximal tibia end, a sternum and an inner ankle, and according to the puncture depth, a written description is arranged on each indication mark display hole on the outer wall of the needle pushing bin so as to be convenient and clear at a glance.
Depth stop piece stop gear 18 includes two limit switch 181, and one is installed on indicating sheet 111, carries out spacingly to the stroke position of depth stop piece, and another is installed on pushing away needle storehouse inner wall, carries out spacingly to the initial position of depth stop piece.
The power supply compartment 12 also serves as a handle, with the power supply 19 preferably being a rechargeable battery, and the outer wall being provided with a trigger button 20 and a motor switch.
In the present embodiment, the method of puncturing by the puncture control member 2 is as follows:
the gear type adjustment rotation 173 is adjusted according to the target puncture site so that the indication marks on the indication sheet 174 correspond to the corresponding display holes.
Turning on a motor switch, buckling a trigger button 20, enabling a motor to rotate forward to drive a gear transmission shaft 141 to rotate, enabling a needle pushing shaft 142 to rotate forward, and enabling a depth limiting blocking piece 15 on the needle pushing shaft 142 to push a sliding cover plate 16 to move forward under the driving of the needle pushing shaft 142; then, the needle pushes the head end of the shaft 142 to be inserted into the inner hexagon at the tail end of the sleeve 402, so as to push the infusion needle component 1 to move forwards integrally, and the head end of the shell component 5 is abutted against the front wall of the launching bin; sleeve 402 is disconnected from housing assembly 5 in a point-and-break connection under the urging of needle drive shaft 142 and is rotatably advanced in a closed housing assembly, through infusion needle port 61 and then advanced to the site to be penetrated, into the bone marrow. When the depth-limiting separation blade 15 is contacted with the limit switch on the indicating sheet, the motor is automatically powered off, the transmission assembly stops acting, and the puncturing action is completed.
Then the trigger button 20 is buckled again, the motor rotates reversely to drive the gear transmission shaft 141 to rotate reversely, the needle pushing shaft 142 rotates backwards along with the needle pushing shaft, the depth limiting blocking piece 15 on the needle pushing shaft is driven by the needle pushing shaft 142 to move backwards with the sliding cover plate 16, the shell throwing window 10 is exposed, and meanwhile the shell component is thrown out through the shell throwing window 10 under the pushing of the shell throwing component. When the depth-limiting baffle 15 is contacted with another limit switch, the motor is automatically powered off, the return of the transmission assembly is completed, and the next puncture can be carried out.
After removal of the actuation part 2, the lancet assembly is removed from the infusion needle assembly, and the infusion tube is then connected to the hollow adapter 302 of the infusion needle to start the infusion.
In the present embodiment, the forward rotation and the reverse rotation of the motor are realized by the trigger button 20, which belongs to the prior art, and the control circuit diagram of the embodiment is shown in fig. 6, so that those skilled in the art can clearly know the specific implementation manner.
The limiting switch is used to limit the position or stroke of the movement of the machine, so that the movement machine can automatically stop according to a certain position or stroke, which also belongs to the common technology in the electrical field, and is not further described in this embodiment.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. An electrical intraosseous infusion system, comprising:
the transfusion needle component comprises a transfusion needle component, a puncture needle component and a shell component, the transfusion needle component comprises a hollow transfusion needle and a hollow joint, the puncture needle component comprises a puncture needle inserted into the hollow transfusion needle and a sleeve with the head end arranged on the periphery of the hollow joint, the tail end of the shell component is connected with the outer wall of the sleeve in a point-section manner,
the puncture control part is gun-shaped and is provided with a launching bin and a power bin, wherein the launching bin comprises a magazine type needle storage box internally provided with an automatic push needle assembly, a shell throwing assembly arranged at the front end of the magazine type needle storage box and a shell throwing window arranged above the shell throwing assembly;
the power bin comprises a needle pushing bin and a power supply bin, wherein a power assembly, a transmission assembly with one end connected with the power assembly and the other end matched with the sleeve, a depth limiting baffle arranged on the transmission assembly, and a sliding cover plate, an adjustable depth limiting indicating assembly and a depth limiting baffle limiting mechanism are arranged in the needle pushing bin, one end of the sliding cover plate is fixedly connected with the depth limiting baffle, and the other end of the sliding cover plate can cover the shell throwing window under the pushing of the depth limiting baffle; the power supply bin is internally provided with a power supply, and the outer wall of the power supply bin is provided with a trigger button.
2. The powered intraosseous infusion system according to claim 1, characterized in that:
wherein the outer wall of the hollow joint is provided with an external thread; the head end and the tail end of the sleeve are separated, internal threads are arranged in the head end, a hexagon socket is arranged in the tail end,
the head end of the shell component is made of soft materials, and the rest parts of the shell component are made of hard materials.
3. The powered intraosseous infusion system according to claim 2, characterized in that:
wherein the magazine type needle storage box is detachably arranged on the gun bore of the firing bin in a mode of matching the convex groove,
the automatic push pin assembly comprises a spring and a push pin plate, one end of the spring is fixedly connected with the inner wall of the needle storage box, the other end of the spring is fixedly connected with the bottom wall of the push pin plate,
the ejection shell component is provided with a push plate, the upper end face of the ejection shell component is in contact with the shell component, and a spring is arranged on the lower end face of the push plate.
4. The powered intraosseous infusion system according to claim 1, characterized in that:
the side wall of the head end of the launching bin is provided with an infusion needle passing hole, and the diameter of the infusion needle passing hole is smaller than that of the shell component.
5. The powered intraosseous infusion system according to claim 2, characterized in that:
in the needle pushing bin, the power component is a motor;
the transmission assembly comprises a gear transmission shaft and a needle pushing shaft, one end of the gear transmission shaft is connected with an output shaft of the motor, and a gear is arranged at the other end of the gear transmission shaft; the tail end part of the needle pushing shaft is meshed with the gear, the head end of the needle pushing shaft is hexagonal and matched with the tail end of the sleeve,
the depth stop piece is mounted at the middle part of the needle pushing shaft.
6. The powered intraosseous infusion system according to claim 2, characterized in that:
the transmission assembly is a ball screw assembly and comprises a screw rod, a nut, a ball returning device and a nut seat, wherein an arc spiral groove is formed in the rear half part of the screw rod, the wall surface of the front half part of the screw rod is smooth, and the head end of the screw rod is hexagonal; the depth limiting baffle is arranged at the tail end of the front half part.
7. The system of claim 5 or 6, wherein:
wherein the adjustable depth-limiting indicating component comprises a rack sliding chute arranged on the inner wall of the push pin bin, a rack, a gear type adjusting rotation arranged at one end of the rack and an indicating sheet arranged on the middle part of the rack,
the indicating sheet is provided with indicating marks, and the wall of the push pin bin is provided with a plurality of indicating mark display holes.
8. The powered intraosseous infusion system according to claim 7, characterized in that:
the depth limiting separation blade limiting mechanism comprises two limiting switches, one limiting switch is installed on the indicating sheet and limits the stroke position of the depth limiting separation blade, and the other limiting switch is installed on the inner wall of the needle pushing bin and limits the initial position of the depth limiting separation blade.
9. The powered intraosseous infusion system according to claim 1, characterized in that:
the power supply is a battery, and a motor switch is further arranged on the outer wall of the power supply bin.
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| CN201910771072.9A CN110652347B (en) | 2019-08-21 | 2019-08-21 | Electric intraosseous infusion system |
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| CN201910771072.9A CN110652347B (en) | 2019-08-21 | 2019-08-21 | Electric intraosseous infusion system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111282092A (en) * | 2020-02-15 | 2020-06-16 | 湖州师范学院 | Automatic injection intelligent magnetic drive needle mounting mechanism |
| CN113331923A (en) * | 2021-04-21 | 2021-09-03 | 四川大学华西医院 | Bone channel infusion device |
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| US20130072856A1 (en) * | 2007-06-29 | 2013-03-21 | Actuated Medical, Inc. | Medical tool for reduced penetration force with feedback means |
| EP2435108A2 (en) * | 2009-05-29 | 2012-04-04 | ECW Therapeutics, Inc. | Apparatus and methods for aspirating and separating components of different densities from a physiological fluid containing cells |
| CN202554742U (en) * | 2012-05-18 | 2012-11-28 | 张芳 | Miniature radioactive source implantation device |
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| CN105268089A (en) * | 2014-06-13 | 2016-01-27 | 上海市浦东医院 | Intraosseous infusion device |
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| CN113331923B (en) * | 2021-04-21 | 2022-11-11 | 四川大学华西医院 | Bone channel infusion device |
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