RU2649504C1 - Automatic injector for standard medical syringes - Google Patents

Abstract

FIELD: medical equipment.

SUBSTANCE: device refers to medical equipment, namely to devices for intramuscular injection, and can be used in medical equipment. Automatic injector for standard medical syringes, consisting of a body, springs, a syringe holder, that platoon plate during the downward movement interacts, until the latch of the syringe lift is snapped under the influence of the physical strength of the human hand, move down to snap the lift lock, plunger of piston is configured to be platted in accordance with the degree of filling of the syringe, rising to the height of the piston rod of the syringe, wherein, piston pusher is configured to platoon according to the degree of filling of the syringe, rising to the height of the piston rod of the syringe, while the rack and the plunger of the piston pusher ensures the fixing of the piston pusher at different heights, wherein a syringe is inserted into the syringe holder, the syringe holder being releasable by the force of the human hand on the trigger button, wherein by means of a main spring cooperating with the syringe holder, the needle of the syringe is inserted into the desired body depth into the patient's body, after which the syringe holder, the rack, the piston pusher, the plunger of the plunger of the piston is lowered to its lowest position in the casing, the plunger of the piston being able to be disengaged from the gear rack of the syringe lift bar, thereby permitting the downward movement of the rack bar and the piston pusher, which allows to squeeze injection fluid from the syringe, and after reaching the rack of the latch of the syringe lift, it is possible to release and, under the influence of the lifting spring, raise the syringe and withdraw the needle from the injection site, while the syringe holder, the pusher, syringe lift is set by the longitudinal movement of the guide body.

EFFECT: after reaching the rack of the latch of the syringe lift, it is possible to release and, under the influence of the lifting spring, raise the syringe and withdraw the needle from the injection site.

1 cl, 2 dwg

Description

The device relates to medical equipment, namely to devices for intramuscular injection, and can be used in the field of medicine.

A device is known: rechargeable automatic injector. " Application for invention No. 2014113407/14, 09/10/2012. Convention Priority: 09/09/2011 US 61 / 532,892. IPC A61M 5/20 (2006.01).

1. Rechargeable automatic injector with housing for housing:

a syringe assembly comprising a syringe with a needle, wherein the syringe assembly is housed in the housing to move between a first position in which the needle is placed inside the housing and a second position in which the needle protrudes out of the housing,

moreover, the syringe unit also contains:

a piston rod configured to advance in a syringe to deliver at least one dose of a drug,

a piston rod drive configured to apply a force to the piston rod to advance the piston rod in the syringe to deliver at least one dose of the drug,

a syringe drive configured to apply force to the syringe assembly, thereby moving the syringe from a first position to a second position,

moreover, the automatic injector also contains a reloading handle made to recharge the automatic injector to supply another dose of the drug,

moreover, the reloading pen is connected to the syringe assembly in such a way that manipulating the user with the recharging pen pulls the syringe assembly back to the first position and at the same time reloads the syringe drive so as to prepare an automatic injector for delivering another dose of the drug,

moreover, the drive of the syringe and the drive of the piston are separate drive means,

moreover, the drive of the syringe contains an elastic device, such as a spring, such as a compression spring,

the automatic injector also comprises a syringe stopper arranged to lock the syringe in the first position, and a skin sensor configured to detach the syringe stopper after contacting the skin of the user, the skin sensor being activated by pressing the skin sensor against the skin of the user,

moreover, the activation of the skin sensor is performed in order to cause the upward movement of the skin sensor, and the inclined surface of the skin sensor is made to engage with the inclined surface of the stopper of the syringe, converting the longitudinal movement of the skin sensor into a rotary movement of the stopper of the syringe,

moreover, the syringe assembly rests on the abutment protrusion of the syringe stop to lock the syringe in the first position, and wherein the pivoting movement of the syringe stop releases the syringe assembly,

moreover, the syringe assembly contains a tongue of the syringe assembly, the tongue of the syringe assembly is designed to move in the guide groove of the stopper of the syringe from the released position adjacent to the protrusion to the end stopper of the stopper of the syringe,

moreover, the syringe assembly moves from the first position to the second position when the tongue of the syringe assembly moves in the guide groove of the syringe stopper from the released position to the end stopper of the syringe stopper. (PROTOTYPE)

The disadvantage is the large complexity of the design and the difficulty in using

A known device "AUTOMATIC INJECTOR". Patent No. 2571231. Application: 2013120978/14, 10/06/2011. IPC A61M 5/20 (2006.01).

The invention relates to medical equipment, namely to automatic injectors for administering a dose of a liquid drug. The injector comprises: a tubular frame carrying a subassembly, overlapping an initiator cuff, an adjusting spring, four locking means. Moreover, the supporting subassembly includes a tubular supporting element mounted with the possibility of sliding relative to the frame and partially located inside the frame, the supporting element comprising a syringe with a hollow injection needle, a drive spring and a piston in order to direct the load of the drive spring to the syringe stop, where the syringe fixed with a supporting element for joint axial movement. Moreover, the overlapping cuff initiator is located on top of the distal end of the automatic injector (1) and extends over at least almost the entire length of the automatic injector. An adjustment spring is located around the support element. The first locking means connects the proximal end of the control spring to either the carrier to advance it to insert the needle, or to the frame to retract the needle, depending on the relative axial position of the carrier and the initiator cuff. The second locking means allows the injection spring to be released when the carrier has almost reached the injection depth during insertion of the needle. The third locking means allows the frame to be connected with the supporting element for joint axial movement relative to the frame of the initiator cuff, while the third locking means allows the frame and supporting element to be separated when the initiating cuff is moved in the proximal direction relative to the frame, thereby releasing the control spring for insertion needles. The fourth locking means allows the distal end of the control spring to be connected either to the supporting element for retracting the needle, or, otherwise, to the cuff initiator. The use of the invention provides the possibility of introducing drugs of different viscosity, including high viscosity, and various volumes; prevent the leakage of the drug from the needle, the ability to use the auto-injector by people with problems with physical dexterity.

The disadvantage is the large complexity of the design and the difficulty in using

The technical result is the ability to make injections to an untrained special medical knowledge person, reducing pain during the injection, and allows you to do the injection yourself.

The technical result is achieved by the fact that the platoon plate (14) interacts downward until the lock of the syringe elevator lock (10) clicks under the influence of the physical strength of a human hand (not shown), while the piston pusher (5) cockes, namely, it rises to the height of the syringe piston head ( 1) in accordance with the degree of filling of the syringe (1), and fixation at different heights is ensured by the gear rack (4) and the piston pusher lock (6), and the syringe holder (3) is inserted into the syringe (1), from the influence of a person’s hand with the trigger button (16) releases I am the holder of the syringe (3), which interacts with the main spring (11) and through which the needle (17) of the syringe (1) is inserted to the required depth into the patient’s body, after which the holder of the syringe (3), the gear rack (4), the pusher the piston (5), the piston pusher retainer (6) are lowered to the lowest position in the casing (2), and the piston pusher retainer (6) is disengaged from the gear rack (4) with the syringe bar (8), thereby freeing movement down to gear rack (4) and piston pusher (5), which leads to squeezing out of the syringe (1) injection liquid (18), and after reaching the gear rack (4) of the clamp of the syringe elevator (10), the syringe elevator (7) is released and, by the action of the lifting spring (9), lifts the syringe (1) and removes the needle (17) from the injection site, in this case, the holder of the syringe (3), the plunger of the piston (5), the lift of the syringe (7) is given a longitudinal movement relative to the syringe needle (1) by the guide body (13).

In FIG. 1 shows the device "Automatic injector for standard medical syringes."

In FIG. 2 shows a section of the “Automatic Injector for Standard Medical Syringe” device.

The injection device uses a standard disposable syringe (1). The device consists of a protective casing (2), a syringe holder (3), a gear rack (4), a piston pusher (5), a piston pusher lock (6), a syringe elevator (7), a syringe elevator bar (8), a lifting spring ( 9), the lock of the syringe elevator (10), the main spring (11), the contact pad (12), the guide body (13), the cocking plate (14), the cover (15), the shutter button (16). needle (17). injection fluid (18).

Device operation Automatic injector for standard medical syringes. ”

To bring the device into working condition: the platoon plate (14) interacts downward until the lock of the syringe elevator lock (10) clicks under the influence of the physical strength of the human hand (not shown in the drawing), while the piston pusher (5) is cocked, namely, it rises to the height of the piston head of the syringe (1) in accordance with the degree of filling of the syringe (1), and fixation at different heights is ensured by the gear rack (4) and the piston pusher lock (6), and the syringe holder (3) is inserted into the syringe (1), from exposure the strength of a person’s hand with the release button (16) the syringe holder (3) is released, which interacts with the main spring (11) and through which the needle (17) is inserted into the syringe a (1) to the required depth into the patient's body, after which the syringe holder (3), the gear rack (4 ), the piston pusher (5), the piston pusher retainer (6) are lowered to the lowest position in the casing (2), and the piston pusher retainer (6) is disengaged from the gear rack (4) with the syringe bar (8), thereby freeing downward movement of the gear rack (4) and piston follower (5), which leads to extrusion from syringe (1) injection fluid (18). and after reaching the gear rack (4) of the clamp of the syringe elevator (10), the syringe elevator (7) is released and, by the action of the lifting spring (9), lifts the syringe (1) and withdraws the needle (17) from the injection site, while holding the syringe holder ( 3), the plunger of the piston (5), the elevator of the syringe (7) is given a longitudinal movement relative to the syringe needle (1) by the guide body (13).

A prototype was made, which showed high technical, hygienic, economic indicators, relative to the prototype.

List of items

1. - standard disposable syringe

2. - a protective casing

3. - syringe holder

4. - gear rack

5. - piston pusher

6. - piston pusher lock

7. - syringe lift

8. - bar syringe lift

9. - lifting spring

10. - syringe lift lock

11. - the main spring

12. - contact area

13. - guide body

14. - platoon plate

15. - cover

16. - shutter button

17. - needle

18. - injection fluid.

Claims (1)

Automatic injector for standard medical syringes, consisting of a housing, springs, syringe holder, characterized in that the platoon plate interacts downward until the syringe lock locks into place under the influence of the physical strength of a human hand, move downward until the lock locks into place, while the piston pusher made with the possibility of cocking, in accordance with the degree of filling of the syringe, rising to the height of the piston rod of the syringe, moreover, the plunger of the piston is made with the possibility of cocking in accordance According to the degree of filling of the syringe, rising to the height of the piston rod of the syringe, moreover, the gear rack and the piston pusher retainer fixes the piston pusher at different heights, while the syringe is inserted into the syringe holder, while the syringe holder is made possible to be released by the action of a person’s hand on the trigger button, while using the main spring interacting with the syringe holder, the syringe needle is inserted to the required depth into the patient’s body, after which the syringe holder, the tooth gear The piston pusher, the piston pusher retainer are lowered to the lowest position in the casing, while the piston pusher retainer can be disengaged from the gear rack of the syringe elevator bar, thereby allowing downward movement of the gear rack and piston follower, which makes it possible to extrude from the syringe is injected with liquid, and after reaching the toothed rack of the retainer of the syringe elevator, it is able to free itself and, under the influence of the lifting spring, raise the syringe and withdraw the needles at the injection site, in this case, the syringe holder, plunger of the piston, and the syringe elevator are given longitudinal movement by the guide body.

Images