CN215351241U - Needle-remaining assistor of infusion equipment - Google Patents

Abstract

The utility model discloses an indwelling needle assisting device of infusion equipment, which comprises: the shell, a pedestal, the inner needle seat, outer needle file and percussion subassembly, the vertical direction installation piece that is equipped with on the base, set up the guide way with the base is perpendicular in the direction installation piece, the inner needle seat sets up in the guide way, the top of direction installation piece is equipped with the percussion subassembly, the top that the inner needle seat and drive inner needle file along the guide way is connected to the percussion subassembly removes to the bottom of guide way, the bottom of base is equipped with outer needle file, the inner needle seat sets up directly over outer needle file, be equipped with the through-hole on the base, the outer needle file of through-hole striking is passed to percussion subassembly drive inner needle file, the outer shell cover is established the cladding and is lived the direction installation piece on the base, the shell is stretched out at the top of percussion subassembly. The utility model aims to provide a safe and sanitary needle assisting device of an indwelling needle of infusion equipment, which has reasonable structure and high release success rate, automatically rebounds to reduce the psychological pressure of a user.

Description

Needle-remaining assistor of infusion equipment

Technical Field

The utility model relates to the field of medical supplies, in particular to an indwelling needle assisting device of infusion equipment.

Background

Infusion devices are used to deliver substances, such as drugs, to the subcutaneous layer of skin of a patient. Devices for assisting in the insertion of a cannula of an infusion device into the skin of a patient are well known. For example, some devices use a spring to automatically drive a needle into the skin of a patient to introduce the cannula of an infusion device into the subcutaneous layer. There is a risk of inadvertent contact with the needle. Furthermore, prior to insertion, the patient's response may be negative when the needle is viewed, e.g., unwilling to place the needle into the skin. Prior art devices do not adequately shield the needle before and/or after introduction of the infusion device, adding psychological stress and burden to the user.

Meanwhile, the prior art has the following defects: the patient is not easy to use and has hidden health hazard. For example, some patients may have difficulty loading the infusion device into the insertion device, and thus, it is desirable to provide the device with a new design for assisting in introducing the infusion device into the skin of the patient; the hose is inevitably contacted by hands when a patient assembles the prior art, so that the hidden health hazard exists; most of the devices need to rely on the active force application of a patient, and certain psychological pressure is generated on the patient when the device is used, so that the success rate of releasing the infusion device is low, and the device is not placed accurately.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model aims to provide the indwelling needle assisting device of the infusion equipment, which has reasonable structure, high release success rate, automatic rebound, safe and sanitary and can reduce the psychological pressure of a user.

According to one aspect of the present invention, there is provided an indwelling needle assist device for an infusion device, comprising: the shell, a pedestal, the inner needle seat, outer needle file and percussion subassembly, the vertical direction installation piece that is equipped with on the base, set up the guide way with the base is perpendicular in the direction installation piece, the inner needle seat sets up in the guide way, the top or the side of direction installation piece are equipped with the percussion subassembly, the top of needle file edge guide way is removed to the bottom of guide way in the connection of percussion subassembly inner needle seat and the drive, the bottom of base is equipped with the outer needle file, the inner needle seat sets up directly over the outer needle file, be equipped with the through-hole on the base, the needle file passes the outer needle file of through-hole striking in the percussion subassembly drive, the direction installation piece is lived in the cladding on the base to outer shell cover, the shell is stretched out at the top of percussion subassembly.

In some embodiments, the firing assembly comprises: the trigger, the stopper, first fixed pin, the second fixed pin, the crank, the connecting rod, the torsional spring, third fixed pin and fourth fixed pin, the trigger is articulated through first fixed pin and direction installation piece, the one end of connecting rod is articulated through fourth fixed pin and interior needle file, the other end of connecting rod is articulated through second fixed pin and articulate one end, the third fixed pin passes torsional spring and articulate the other end and articulates on the direction installation piece and be located the below of first fixed pin, torsional spring connection direction installation piece and crank, the trigger passes through the position that spacing buckle limited the connecting rod when the torsional spring is compressed, torsional spring drive crank drives when the trigger breaks away from the connecting rod the one end of connecting rod removes to the base direction, the stopper can be dismantled the setting and prescribe the position of trigger in the below of trigger.

In some embodiments, the torsion spring includes a first fixing portion, a second fixing portion, a first spring, a second spring, and a driving portion, one side of the driving portion is connected to the first spring, the other side of the driving portion is connected to the second spring, the first spring is connected to the first fixing portion, the second spring is connected to the second fixing portion, the first fixing portion and the second fixing portion are in the same straight line, and the driving portion, the first fixing portion and the second fixing portion form an included angle of 45 ° to 120 °.

In some embodiments, the top of the guide mounting block is provided with a mounting groove, the first fixing part and the second fixing part are arranged in the mounting groove, the guide mounting block is provided with a first hinge hole and a second hinge hole, and the first hinge hole and the second hinge hole are vertically arranged.

In some embodiments, the limit buckle comprises a first buckle and a second buckle, the first buckle is fixed on the firing trigger, the second buckle is fixed on the connecting rod, and the first buckle and the second buckle can be mutually fixed and mutually separated under the action of external force.

In some embodiments, the crank comprises a third hinge hole, a fourth hinge hole, a body and a driving groove, the third hinge hole and the fourth hinge hole are arranged at two ends of the body, the driving groove is arranged in the middle of the body, the driving portion is arranged in the driving groove, a third fixing pin penetrates through the first spring, the third hinge hole and the second spring, and the third fixing pin is arranged in the second hinge hole.

In some embodiments, the firing trigger comprises a force application handle and a fifth hinge hole, the fifth hinge hole is arranged below the force application handle, a first buckle is arranged on one side of the fifth hinge hole, and a first fixing pin penetrates through the fifth hinge hole and the first hinge hole.

In some embodiments, the two ends of the connecting rod are respectively provided with a sixth hinge hole and a seventh hinge hole, the fourth fixing pin passes through the sixth hinge hole and the second hinge hole, and the second fixing pin passes through the seventh hinge hole and the fourth hinge hole.

The utility model discloses an indwelling needle assisting needle device of infusion equipment, which utilizes the elasticity of a torsional spring to drive a crank slider to move so as to drive an inner needle seat at the bottom of a connecting rod to move downwards in a guide groove by a triggering component, so that a steel needle drives a hose on an outer needle seat to be inserted into the subcutaneous layer of a user, and the steel needle is driven to retract along the guide groove by the continuous rotation of the connecting rod after the completion, therefore, the triggering and retracting are rapid in working, and the pain of the user is small; the steel needle is hidden in the utility model in the whole process to prevent psychological stress and burden on patients and further cause discomfort.

Drawings

FIG. 1 is a schematic structural view of an indwelling needle assist device of the infusion set of the present invention;

FIG. 2 is an exploded view of the needle insertion aid of the infusion set of the present invention;

FIG. 3 is a schematic view showing the mounting state of an indwelling needle assist device of the infusion set according to the present invention;

FIG. 4 is a schematic structural view of a torsion spring and a crank of an indwelling needle assist device of the infusion set according to the present invention;

FIG. 5 is a schematic view of the structure of the trigger and the connecting rod of the needle inserting device of the infusion set of the present invention;

FIG. 6 is a schematic view of the initial state of the needle insertion aid of the infusion set of the present invention;

FIG. 7 is a schematic view showing the cocked state of the indwelling needle assisting device of the infusion apparatus according to the present invention

FIG. 8 is a schematic view showing the retracted state of the indwelling needle assist device of the infusion set of the present invention.

Detailed Description

The present invention is described in detail with reference to the embodiments shown in the drawings, but it should be understood that these embodiments are not intended to limit the present invention, and those skilled in the art should understand that equivalent changes or substitutions in function, method or structure according to the embodiments are included in the scope of the present invention.

In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or interconnected between two elements, directly or indirectly through intervening media, and the specific meaning of the terms may be understood by those skilled in the art according to their specific situation.

As shown in fig. 1 and 2, the needle inserting device of the infusion set according to the present invention comprises: the needle setting device comprises a shell 1, a base 2, an inner needle seat 3, an outer needle seat 4 and a firing assembly 5, wherein a guide mounting block 6 is vertically arranged on the base 2, a guide groove 61 is formed in the guide mounting block 6 and is perpendicular to the base 2, the inner needle seat 3 is arranged in the guide groove 61, and the firing assembly 5 is arranged on the top or the side surface of the guide mounting block 6 and is arranged on the top. Trigger subassembly 5 is connected interior needle file 3 and is driven interior needle file 3 and remove to the bottom of guide way 61 along the top of guide way 61, and the bottom of base 2 is equipped with outer needle file 4, and interior needle file 3 sets up directly over outer needle file 4, is equipped with the through-hole on base 2, and trigger subassembly drive interior needle file 3 passes through the through-hole and strikes outer needle file 4, and the cladding is lived direction installation piece 6 on base 2 to the cover of shell 1, and the top of trigger subassembly 5 stretches out shell 1. When the percussion assembly is used, the slider of the crank 55 is driven to move by the elasticity of the torsion spring 57 so as to drive the inner needle base 3 at the bottom of the connecting rod 56 to move downwards in the guide groove 61, so that the steel needle drives the hose on the outer needle base 4 to be punctured into the subcutaneous layer of a user, and the connecting rod 56 continues to rotate to drive the steel needle to retract along the guide groove 61 after the completion of the operation, so that the percussion and retraction are rapid in operation, and the pain of the user is small; the steel needle is hidden in the utility model in the whole process to prevent psychological stress and burden on patients and further cause discomfort.

As shown in fig. 3, the base 2 is provided with a plurality of fasteners, and the housing 1 is connected to the base 2 through the fasteners.

The firing assembly 5 includes: a firing trigger 51, a limit block 52, a first fixing pin 53, a second fixing pin 54, the trigger device comprises a crank 55, a connecting rod 56, a torsion spring 57, a third fixing pin 58 and a fourth fixing pin 59, wherein the trigger 51 is hinged with the guide mounting block 6 through the first fixing pin 53, one end of the connecting rod 56 is hinged with the inner needle base 3 through the fourth fixing pin 59, the other end of the connecting rod 56 is hinged with one end of the crank 55 through the second fixing pin 54, the third fixing pin 58 penetrates through the torsion spring 57 and the other end of the crank 55 to be hinged on the guide mounting block 6 and is located below the first fixing pin 53, the torsion spring 57 is connected with the guide mounting block 6 and the crank 55, the position of the connecting rod 56 is limited by the trigger 51 through a limiting buckle 7 when the torsion spring 57 is compressed, the torsion spring 57 drives the crank 55 to drive one end of the connecting rod 56 to move towards the direction of the base 2 when the trigger 51 is separated from the connecting rod 56, and the limiting block 52 is detachably arranged below the trigger 51 to limit the position of the trigger 51. The crank 55 is provided with kinetic energy through the compressed torsion spring 57, when the crank 55 is in an initial state, the torsion spring 57 contracts to abut against the crank 55, the crank 55 is hinged to the connecting rod 56 through the second fixing pin 54, meanwhile, the connecting rod 56 and the firing trigger 51 limit the position of the connecting rod 56 through the limiting buckle 7, so that the torsion spring 57 is always in a compressed state, the position of the firing trigger 51 is further limited by the limiting block 52, and the firing trigger 51 is prevented from being triggered mistakenly. After the limiting block 52 is taken out, the trigger 51 is broken off, so that the limiting buckle 7 is separated, the position of the connecting rod 56 is not limited, the compressed torsion spring 57 releases the pushing crank 55, the crank 55 drives one end of the connecting rod 56 to move downwards, the inner needle base 3 is finally driven to move along the guide groove 61, and the steel needle is finally used for driving the outer needle base 4 and the soft needle tube to penetrate into the subcutaneous layer.

As shown in fig. 4, the torsion spring 57 includes a first fixing portion 571, a second fixing portion 572, a first spring 573, a second spring 574 and a driving portion 575, one side of the driving portion 575 is connected to the first spring 573, the other side of the driving portion 575 is connected to the second spring 574, the first spring 573 is connected to the first fixing portion 571, the second spring 574 is connected to the second fixing portion 572, the first fixing portion 571 and the second fixing portion 572 are in the same line, and the driving portion 575 and the first fixing portion 571 and the second fixing portion 572 form an included angle of 80 ° to 105 °. The driving portion 575 in the released state forms an angle of 45-120 with the first fixing portion 571 and the second fixing portion 572 so as to put the first spring 573 and the second spring 574 in the tightened state after compression, and the optimal angle of the angle is 90 °.

The top of the guide mounting block 6 is provided with a mounting groove 62, the first fixing portion 571 and the second fixing portion 572 are arranged in the mounting groove 62, the guide mounting block 6 is provided with a first hinge hole 63 and a second hinge hole 64, and the first hinge hole 63 and the second hinge hole 64 are vertically arranged. The first fixing part 571 and the second fixing part 572 are both installed in the installation groove 62, the first spring 573, the driving part 575, and the second spring 574 are above the guide groove 61, the third fixing pin 58 passes through the first spring 573, the third hinge hole 551, and the second spring 574, and both ends of the third fixing pin 58 are installed in the second hinge hole 64.

Limiting buckle 7 comprises a first buckle 71 and a second buckle 72, wherein the first buckle 71 is fixed on firing trigger 51, the second buckle 72 is fixed on link 56, and the first buckle 71 and the second buckle 72 can be mutually fixed and mutually separated under the action of external force. The position of the link 56 is defined by the first catch 71 and the second catch 72, so as to ensure that the torsion spring 57 is in a compressed state, and when the first catch 71 and the second catch 72 are disengaged, the torsion spring 57 drives the link 56 to operate.

The crank 55 includes a third hinge hole 551, a fourth hinge hole 552, a body 553, and a driving slot 554, the body 553 is provided at both ends with the third hinge hole 551 and the fourth hinge hole 552, the body 553 is provided at the middle with the driving slot 554, a driving part 575 is provided in the driving slot 554, a third fixing pin 58 passes through the first spring 573, the third hinge hole 551, and the second spring 574, and the third fixing pin 58 is installed in the second hinge hole 64. The third fixing pin 58 passes through the third hinge hole 551 to fix one end of the crank 55, the other end of the crank 55 is hinged to the link, the link 56 is driven to move after the driving slot 554 is pushed by the release driving portion 575, and the inner needle holder 3 hinged to the link 56 is driven by the link 56 to rapidly move downwards along the guide slot 61 towards the base 2.

As shown in FIG. 5, the firing trigger 51 includes a force application handle 511 and a fifth hinge hole 512, the fifth hinge hole 512 is disposed below the force application handle 511, a first buckle 71 is disposed at one side of the fifth hinge hole 512, and a first fixing pin 53 passes through the fifth hinge hole 512 and the first hinge hole 63. Therefore, when the biasing handle 511 is pressed downward, the first catch 71 rotates upward about the first fixing pin 53, and the first catch 71 is disengaged from the second catch 72, thereby releasing the torsion spring 57.

The link 56 has a sixth hinge hole 561 and a seventh hinge hole 562 at both ends thereof, respectively, the fourth fixing pin 59 passes through the sixth hinge hole 561 and the second hinge hole 64, and the second fixing pin 54 passes through the seventh hinge hole 562 and the fourth hinge hole 552.

For the sake of clarity, the movement of the inner hub 3 is shown hidden in fig. 5, 6 and 7.

As shown in FIG. 6, in the unfired state, the stop block 52 is located at a position below the firing trigger 51, and a first catch 71 and a second catch 72 on the firing trigger 51 are connected to define the position of the link 56; the first fixing part 571 and the second fixing part 572 are arranged in the mounting groove 62, the driving part 575 is limited in the driving groove 554, and the included angle between the driving part 575 and the first fixing part 571 and the second fixing part 572 is reduced to enable the first spring 573 and the second spring 574 to contract; the crank 55 is hinged to link 56 by a second fixed pin 54, while the position of link 56 is defined by limit catch 7 with the firing trigger 51 so that torsion spring 57 is always in a compressed state.

As shown in fig. 7, in the cocked state, the force application handle 511 is pressed down after the limiting block 52 is taken out, the first buckle 71 rotates upward around the first fixing pin 53, so that the first buckle 71 is separated from the second buckle 72, the torsion spring 57 is finally released, the compressed first spring 573 and the second spring 574 release and push the driving portion 575, the driving portion 575 drives the crank 55 to rotate, the crank 55 drives one end of the connecting rod 56 to move downward, the inner needle base 3 hinged to the connecting rod 56 is driven by the connecting rod 56 to move downward and rapidly towards the base 2 along the guiding groove 61, and finally, the steel needle is used to drive the outer needle base 4 and the soft needle tube to penetrate into the subcutaneous layer.

As shown in fig. 8, after the percussion is completed, the crank 55 continues to move to drive the connecting rod 56 to rotate and drive the guiding groove 61 of the inner needle base 3 to move upwards after the outer needle base 4 is ejected, and at the same time, the steel needle on the inner needle base 3 is taken out, and the outer needle base 4 is left behind on the human body.

The inner hub 3 includes: fixing base, steel needle and slider, the fixed steel needle that sets up in bottom center of fixing base, the symmetry sets up two sliders on the fixing base, and the slider is inserted in guide way 61 and can be followed guide way 61 and reciprocated. The slide block is arranged in the guide groove 61, so that the fixed seat and the steel needle move up and down in the guide groove 61 when driven by stress. The slider is cylindrical and has an outer diameter which is clearance-fitted to the width of the guide groove 61, while the inner wall of the guide groove 61 and the outer wall of the slider need to be as smooth as possible in order to reduce the friction between the guide groove 61 and the slider.

The outer needle holder 4 includes: the needle holder comprises a holder body, a communicating hole and a soft needle part, wherein the communicating hole is formed in the center of the holder body, the bottom of the soft needle part is inserted into the communicating hole, and the top of the soft needle part is connected with an inner needle holder 3. In the initial state, the soft needle part is not completely inserted into the communicating hole, the steel needle is inserted into the top of the soft needle part, and the steel needle drives the soft needle part to prick the human body together after being impacted by the outer needle base 4.

Compared with the novel intubation device of the infusion equipment, the intubation device is more stable and reliable because the torsion spring 57 is released by two groups of springs at the same time.

The foregoing describes only some embodiments of the present invention and modifications and variations thereof will be apparent to those skilled in the art without departing from the spirit and scope of the utility model.

Claims (8)

1. The needle ware that helps of remaining needle of infusion equipment which characterized in that includes: shell, base, interior needle file, outer needle file and percussion subassembly, the vertical direction installation piece that is equipped with on the base, set up the guide way with the base is perpendicular in the direction installation piece, interior needle file sets up in the guide way, direction installation piece is equipped with the percussion subassembly, the percussion subassembly is connected interior needle file and is driven the top of interior needle file along the guide way and remove to the bottom of guide way, the bottom of base is equipped with the outer needle file, interior needle file sets up directly over the outer needle file, be equipped with the through-hole on the base, the needle file passes through-hole striking outer needle file in the percussion subassembly drive, the shell cover is established the cladding and is lived direction installation piece on the base, the shell is stretched out at the top of percussion subassembly.

2. The indwelling needle booster of claim 1, wherein the firing assembly comprises: trigger, stopper, first fixed pin, second fixed pin, crank, connecting rod, torsional spring, third fixed pin and fourth fixed pin, the trigger is articulated through first fixed pin and direction installation piece, the one end of connecting rod is passed through fourth fixed pin and interior needle holder hinge, the other end of connecting rod is articulated through second fixed pin and articulate one end, the third fixed pin passes torsional spring and articulate the other end and articulates on the direction installation piece and is located the below of first fixed pin, torsional spring connection direction installation piece and crank, the position of connecting rod is injectd through spacing buckle to the trigger when the torsional spring is compressed, torsional spring drive crank drives when the trigger breaks away from the connecting rod the one end of connecting rod removes to the base direction, the stopper can be dismantled the position that sets up the below at the trigger and injectd the trigger.

3. The needle-indwelling needle assisting device of the infusion apparatus according to claim 2, wherein the torsion spring comprises a first fixing part, a second fixing part, a first spring, a second spring and a driving part, one side of the driving part is connected with the first spring, the other side of the driving part is connected with the second spring, the first spring is connected with the first fixing part, the second spring is connected with the second fixing part, the first fixing part and the second fixing part are in the same straight line, and the driving part and the first fixing part and the second fixing part form an included angle of 45-120 degrees.

4. The needle-indwelling needle-assisting device of the infusion apparatus according to claim 3, wherein the guide mounting block has a mounting groove at the top, the first fixing portion and the second fixing portion are disposed in the mounting groove, the guide mounting block is provided with a first hinge hole and a second hinge hole, and the first hinge hole and the second hinge hole are vertically disposed.

5. The needle inserting aid of an indwelling needle of an infusion device according to claim 3, wherein the crank comprises a third hinge hole, a fourth hinge hole, a body and a driving groove, the third hinge hole and the fourth hinge hole are formed at two ends of the body, the driving groove is formed in the middle of the body, the driving part is arranged in the driving groove, the third fixing pin penetrates through the first spring, the third hinge hole and the second spring, and the third fixing pin is installed in the second hinge hole.

6. The needle-indwelling needle booster of the infusion device according to claim 2, wherein the limit buckle comprises a first buckle and a second buckle, the first buckle is fixed on the trigger, the second buckle is fixed on the connecting rod, the first buckle and the second buckle can be fixed with each other, and the first buckle and the second buckle are separated from each other under the action of external force.

7. The needle-indwelling needle booster of the infusion device according to claim 6, wherein the firing trigger comprises a force applying handle and a fifth hinge hole, the fifth hinge hole is arranged below the force applying handle, a first buckle is arranged on one side of the fifth hinge hole, and the first fixing pin passes through the fifth hinge hole and the first hinge hole.

8. The needle-indwelling needle-assisting device according to claim 2, wherein the connecting rod has a sixth hinge hole and a seventh hinge hole at both ends thereof, the fourth fixing pin passes through the sixth hinge hole and the second hinge hole, and the second fixing pin passes through the seventh hinge hole and the fourth hinge hole.

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