Clinical anesthesia medicine feeder
By designing a quantitative mechanism in which the limit rod is threadedly connected to the injection head, the problems of cumbersome operation and ingress of contaminants in traditional anesthesia drug delivery devices are solved, and the effects of quantitative, multiple and rapid injections are achieved.
Patent Information
- Application Number
- CN202422351495.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-09-26
AI Technical Summary
Traditional manual syringes are cumbersome to operate and prone to errors. They are also difficult to achieve quantitative administration during clinical anesthesia, prevent external contaminants from entering the patient's body during multiple injections, and the injection speed is slow.
A clinical anesthesia drug delivery device consisting of a syringe and a dosing mechanism was designed. The device was connected to the injection head through a threaded limit rod, and the injection volume was controlled by a rubber piston and a scale to prevent the entry of contaminants. The device also supported the replacement of multiple injection heads to meet the needs of different drugs.
It enables the prevention of patient infection during secondary infusion, provides quantitative injection, improves injection efficiency and applicability, and simplifies the operation process.
Smart Images
Figure CN223438951U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field, concretely relates to a clinical anesthesia medicine delivery device. BACKGROUND
[0002] In the clinical anesthesia process, the traditional method usually adopts manual injection to carry out medicine delivery, but the method has certain deficiency, manual injector operation is tedious, and error is easy to produce, and the scale on the injector needs to be observed at all times when injecting, and in the clinical anesthesia, because the constitution of each patient is different, the anesthetic quantity required by each patient is also different, and in a surgery, anesthesia can be carried out many times, and the anesthetic quantity of each anesthesia can be different, and each time when anesthetic is supplemented, it is more tedious.
[0003] Prior art, for example, the Chinese utility model patent with the announcement number CN2023225733167 discloses "a quantitative anesthetic injection device", which is through setting scale mark, sleeve, limit disc, limit rod, when operating, the total quantity of anesthetic in the needle cylinder is observed first, then the sleeve is rotated according to the quantity of injection, the sleeve drives the limit disc to move on the outside of the needle cylinder, the limit disc is coincided with the specified scale mark, so that when injecting the patient, the staff pushes the push disc to drive the limit rod to move, when the limit rod contacts with the limit disc, it shows that the quantity of anesthetic has been injected, this mode is simple in operation, and it is convenient for medical staff to quantitatively inject anesthetic, but the structure has defects, namely, the structure is easy to send the external pollution into the patient's body when injecting the patient twice, and the structure needs to readjust the position of the limit disc when injecting twice, so that the speed of injecting anesthetic is reduced. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a clinical anesthesia medicine delivery device which can prevent patients from being infected by external pollutants when secondary infusion, and can also quantitatively and repeatedly inject, and improve injection efficiency.
[0005] In order to achieve the above technical effects, the utility model is realized through the following technical scheme: a clinical anesthesia medicine delivery device, characterized by comprising an injector and a quantitative mechanism, the quantitative mechanism comprises a limit rod which is screw-connected to the front end of the injector, the front end of the limit rod is provided with a rubber piston, the rubber piston is slidingly installed in the inside of the injection head, and the limit rod is screw-connected to the rear end of the injection head, the length of the limit rod is greater than the length of the injection head, the injection head is of transparent material, the outside of the injection head is provided with a scale, and the front end of the injection head is detachably installed with a needle head, the outside of the needle head is provided with a protective cover.
[0006] Preferably, the front end of the injector is provided with an interface, and the inner diameter of the interface is larger than that of a conventional injector, and the inside of the interface is provided with an internal thread.
[0007] Preferably, the limiting rod is provided with external threads outside, the internal threads inside the interface are matched with the external threads, a through hole is formed in the middle of the limiting rod, and a color ring in bright color is arranged at the bottom of the limiting rod.
[0008] Preferably, the rubber piston is in interference fit with the inner wall of the injection head, a metal baffle is arranged above the rubber piston, the outer diameter of the baffle is smaller than the inner diameter of the injection head, and a sliding rod is arranged above the rubber piston.
[0009] Preferably, the sliding rod is of a hollow structure, a ventilation groove is formed in the bottom of the sliding rod, and the sliding rod is matched with the through hole.
[0010] Preferably, the injection head is provided with multiple types, a connecting hole is formed at the rear end of the injection head, the connecting hole is matched with the limiting rod, and a sealing ring is arranged between the connecting hole and the limiting rod.
[0011] Compared with the related art, the clinical anesthesia medicine delivery device has the following advantages
[0012] Beneficial effects:
[0013] 1. The quantitative mechanism is arranged, the limiting rod is connected with the syringe, the limiting rod is connected with the injection head, the syringe is communicated with the injection head, the injection head becomes replaceable, the movement of the rubber piston is limited by the limiting rod, the maximum storage capacity of the injection head for extracting anesthetic agents is controlled, and the injection amount of the injection head during injection becomes constant.
[0014] 2. The injection head and the limiting rod are arranged, the injection head is connected with the limiting rod through threads, the injection head can be replaced, multiple injection heads can store multiple different kinds and different capacity of agents, and the applicability of the device is improved. DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0016] Figure 1 is a schematic view of the overall structure of the present application;
[0017] Figure 2 is a schematic view of the overall structure of the quantitative mechanism of the present application;
[0018] Figure 3 is a schematic view of the overall structure of the rubber piston of the present application;
[0019] Figure 4 Fig. 1 is a connection relationship diagram of the limiting rod and the interface and the injection head of the utility model;
[0020] Figure 5 Fig. 2 is a working diagram of the utility model quantitative mechanism.
[0021] In the drawings, the component list represented by each sign is as follows:
[0022] 1, syringe; 11, interface; 12, internal thread; 2, quantitative mechanism; 21, limiting rod; 211, external thread; 212, through hole; 213, color ring; 22, rubber piston; 221, baffle; 222, sliding rod; 2221, air groove; 23, injection head; 231, connecting hole; 232, sealing ring; 24, scale; 3, needle; 4, protective cover. DETAILED DESCRIPTION
[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.
[0024] Embodiment 1
[0025] Referring to Figures 1 to 5 Fig. 1 is a clinical anesthesia drug delivery device, characterized in that it comprises a syringe 1 and a quantitative mechanism 2, the quantitative mechanism 2 comprises a limiting rod 21 threaded to the front end of the syringe 1, the front end of the limiting rod 21 is provided with a rubber piston 22, the rubber piston 22 is slidingly installed in the inside of an injection head 23, and the limiting rod 21 is threaded to the rear end of the injection head 23, the length of the limiting rod 21 is greater than the length of the injection head 23, the injection head 23 is of transparent material, the outside of the injection head 23 is provided with a scale 24, the front end of the injection head 23 is detachably installed with a needle 3, the outside of the needle 3 is provided with a protective cover 4. The connection of the syringe 1 and the injection head 23 enables the injection head 23 to be replaced, the rubber piston 22 inside the injection head 23 is driven to move by the negative pressure generated by the syringe 1, so that the rubber piston 22 moves to generate negative pressure inside the injection head 23, so that the injection head 23 sucks anesthetic into the inside of the injection head 23 through the needle 3, and the needle 3 can be protected by the protective cover 4 after the injection head 23 is detached; and the rotation of the limiting rod 21 at the bottom of the injection head 23 can change the distance between the bottom of the limiting rod 21 and the rubber piston 22, thereby limiting the movement of the rubber piston 22 and limiting the injection of the injection head 23.
[0026] The front end of the syringe 1 is provided with an interface 11, and the inner diameter of the interface 11 is larger than that of a conventional syringe 1. The inner side of the interface 11 is provided with an internal thread 12. The larger interface 11 makes the negative pressure generated by the syringe 1 more easily act on the rubber piston 22 through the limiting rod 21, so that only a smaller force is needed to pull the rubber piston 22 to move. The larger interface 11 and the internal thread 12 make the installation of the interface 11 and the limiting rod 21 more convenient.
[0027] The outer side of the limiting rod 21 is provided with an external thread 211, and the internal thread 12 inside the interface 11 is matched with the external thread 211. A through hole 212 is formed in the middle of the limiting rod 21, and a brightly colored color ring 213 is arranged at the bottom of the limiting rod 21. The external thread 211 makes the connection of the limiting rod 21 and the syringe 1 more stable, and the color ring 213 at the bottom of the limiting rod 21 makes the contrast of the limiting rod 21 and the scale 24 easier.
[0028] The rubber piston 22 is in interference fit with the inner wall of the injection head 23. A metal baffle 221 is arranged above the rubber piston 22, the outer diameter of the baffle 221 is smaller than the inner diameter of the injection head 23, and a sliding rod 222 is arranged above the rubber piston 22. The interference fit of the rubber piston 22 and the inner wall of the injection head 23 ensures the sealing of the inside of the injection head 23. The arrangement of the baffle 221 makes the rubber piston 22 stop moving after contacting the limiting rod 21, preventing the concave of the flexible rubber piston 22 from causing too much drug inhalation. The arrangement of the sliding rod 222 ensures the stability of the rubber piston 22 in motion.
[0029] The sliding rod 222 is a hollow structure, the bottom of the sliding rod 222 is provided with a breathable groove 2221, and the sliding rod 222 is matched with the through hole 212. The hollow structure of the sliding rod 222 makes the negative pressure generated in the syringe 1 able to pass through the sliding rod 222 and the breathable groove 2221, thereby communicating with the inside of the injection head 23, so that a negative pressure is generated above the rubber piston 22, thereby making the rubber piston 22 move.
[0030] The injection head 23 is provided with multiple models, the rear end of the injection head 23 is provided with a connecting hole 231 matched with the limiting rod 21, and a sealing ring 232 is arranged between the connecting hole 231 and the limiting rod 21. The multiple models of the injection head 23 can adapt to more use scenarios. The connecting hole 231 is used to connect the limiting rod 21, and the sealing ring 232 ensures the sealing between the limiting rod 21 and the injection head 23, thereby ensuring that there is no air leakage when the rubber piston 22 moves.
[0031] Example 2
[0032] The sealing ring 232 is arranged between the joint and the limiting rod 21.
[0033] The sterile cotton is arranged in the protective cover 4, and is used for preventing the needle 3 from being polluted.
[0034] The capacity of the syringe 1 is greater than that of the injection head 23.
[0035] The bottom of the scale 24 is coincident with the top of the rubber piston 22 in the initial state.
[0036] The injection head 23 is a disposable tool.
[0037] Embodiment 3
[0038] Working principle: Before the anesthesiologist anesthetizes the patient, the medicament for patient anesthesia is prepared, then the limiting rod 21 and the injection head 23 are screwed together, then the limiting rod 21 is rotated, so that the bottom of the limiting rod 21 moves up and down in the injection head 23, and according to the required amount of the patient, the color ring 213 at the bottom of the limiting rod 21 is adjusted to be coincident with the specific scale 24 on the side wall of the injection head 23, and after the adjustment is completed, the joint of the limiting rod 21 and the syringe 1 is connected through the external thread 211 and the internal thread 12, the doctor pulls the syringe 1, so that the negative pressure is generated in the syringe 1, and the syringe 1 is communicated with the air passage 2221 through the through hole 212, so that the inside of the injection head 23 is communicated with the inside of the syringe 1, so that the negative pressure is generated in the inside of the injection head 23, and the rubber piston 22 is further moved to the rear end under the action of the negative pressure, so that the negative pressure is generated in the inside of the injection head 23, and the anesthetic medicament is absorbed.
[0039] With the gradual movement of the rubber piston 22 to the rear end, until the baffle 221 at the rear end of the rubber piston 22 is in contact with the bottom of the limiting rod 21, so as to block the movement of the rubber piston 22, that is, the set amount of medicament is reached, at this time, the doctor places the protective cover 4 outside the needle 3, and removes the injection head 23 for storage, for use during the operation, and the above steps are used to absorb other anesthetic medicaments, and the capacities of the medicaments are adjusted.
[0040] When injecting before the operation, the doctor selects a specific injection head 23 from the pre-stored injection head 23, and installs it on the syringe 1 through the limiting rod 21, the doctor removes the protective cover 4 outside the needle 3 to inject the patient, and after the injection is completed, the injection head 23 is discarded, so as to achieve the purpose of rapid injection and quantification, and the disposable injection head 23 can also prevent the secondary use of the needle 3.
Claims
1. A clinical anesthesia drug delivery device, characterized in that: The invention comprises a syringe (1) and a quantitative mechanism (2), wherein the quantitative mechanism (2) comprises a limiting rod (21) threadedly connected to the front end of the syringe (1), a rubber piston (22) being provided at the front end of the limiting rod (21), the rubber piston (22) being slidably mounted inside an injection head (23), and the limiting rod (21) being threadedly connected to the rear end of the injection head (23), the length of the limiting rod (21) being greater than the length of the injection head (23), the injection head (23) being made of a transparent material, a scale (24) being provided on the outside of the injection head (23), a needle (3) being detachably mounted on the front end of the injection head (23), and a protective cover (4) being provided on the outside of the needle (3).
2. A clinical anesthesia drug delivery device according to claim 1, characterized in that: The front end of the syringe (1) is provided with an interface (11), and compared with a conventional syringe (1), the inner diameter of the interface (11) is larger, and an internal thread (12) is provided on the inner side of the interface (11).
3. A clinical anesthesia drug delivery device according to claim 1, characterized in that: The outer side of the limiting rod (21) is provided with an external thread (211), and the internal thread (12) inside the interface (11) is adapted to the external thread (211). A through hole (212) is provided in the middle of the limiting rod (21), and a brightly colored color ring (213) is provided at the bottom of the limiting rod (21).
4. A clinical anesthesia drug delivery device according to claim 1, characterized in that: The rubber piston (22) is interference-fitted with the inner wall of the injection head (23); a metal baffle (221) is provided above the rubber piston (22); the outer diameter of the baffle (221) is smaller than the inner diameter of the injection head (23); and a sliding rod (222) is provided above the rubber piston (22).
5. A clinical anesthesia drug delivery device according to claim 4, characterized in that: The slide bar (222) is a hollow structure, and a ventilation groove (2221) is provided at the bottom of the slide bar (222), and the slide bar (222) is adapted to the through hole (212).
6. A clinical anesthesia drug delivery device according to claim 1, characterized in that: The injection head (23) is provided with various models. A connecting hole (231) is provided at the rear end of the injection head (23). The connecting hole (231) is adapted to the limiting rod (21). A sealing ring (232) is provided between the connecting hole (231) and the limiting rod (21).