CN114272016A - Auriprint preparation material injection device - Google Patents
Auriprint preparation material injection device Download PDFInfo
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- CN114272016A CN114272016A CN202111659096.9A CN202111659096A CN114272016A CN 114272016 A CN114272016 A CN 114272016A CN 202111659096 A CN202111659096 A CN 202111659096A CN 114272016 A CN114272016 A CN 114272016A
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- preparation material
- material injection
- barrel
- injection device
- extrusion
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Abstract
The invention discloses an auriprint preparation material injection device, which comprises: a barrel having a distal end and a proximal end in an injection direction, a plunger configured to move within the barrel, the plunger comprising a piston and a pushrod; the barrel tip is connected to the far end of the barrel body in a sealing mode, and the far end of the barrel tip is provided with an extrusion opening; wherein the extrusion port is configured to include at least two expansions and at least two flow restrictions; the at least two expansion parts are configured to cut off the periphery of the extrusion opening part to form gaps; the at least two restrictions are configured as substantially spherical portions disposed between two adjacent breaks. The invention has reasonable structural design, is stable and reliable, and can improve the preparation efficiency and the accuracy of the auriform. When the perfusion volume reaches a preset threshold value, an alarm is sent out in time, and the safety is improved.
Description
Technical Field
The invention relates to a hearing aid manufacturing device. More particularly, the present invention relates to an ear impression preparation material injection apparatus.
Background
In-the-ear type hearing aids are perhaps the most convenient and comfortable type of hearing aid. In-the-ear hearing aids have ears adapted to the individual; the wearing is comfortable; easy to put on or take off hearing aids; the sound collection function of the external ear is fully utilized; less obtrusive, etc., the wearer can use the phone in a normal manner and can also wear an in-the-ear type hearing aid to customize the hearing and ear canal condition of the patient while sleeping. The preparation of an impression of the ear is a critical step in the customization of hearing aids. When the ear impression mold is manufactured, the preparation material needs to be slowly and safely injected into the auditory canal of a patient by using an injector, and the preparation material needs to be completely attached to the auditory canal of the patient to obtain the accurate ear impression mold. The existing injector controls the pouring speed of the preparation material through the experience of a doctor, and the too high speed can cause damage to the auditory canal of a patient; too slow a speed may result in the partially prepared material being solidified and formed when the injected material is not completely injected, resulting in the failure of the preparation of the auricle impression. How to control the speed of preparing materials by injecting an injector is a problem to be solved urgently at present.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
It is still another object of the present invention to provide an auriform impression preparation material injection apparatus, which can effectively control the extrusion speed of the preparation material, and can effectively enlarge the filling surface of the preparation material when the preparation material is extruded, so that the preparation material can be completely attached to the auditory canal of a patient, and the preparation efficiency and accuracy of the auriform impression can be improved. Meanwhile, when the perfusion volume reaches a preset threshold value, an alarm is sent out in time, and the safety is improved.
To achieve these objects and other advantages in accordance with the present invention, there is provided an ear impression preparation material injection apparatus, comprising:
a barrel having a distal end and a proximal end in an injection direction,
a plunger configured to move within the barrel, the plunger comprising a piston and a pushrod;
the barrel tip is connected to the far end of the barrel body in a sealing mode, and the far end of the barrel tip is provided with an extrusion opening; wherein the extrusion port is configured to include at least two expansions and at least two flow restrictions; the at least two expansion parts are configured to cut off the periphery of the extrusion opening part to form gaps; the at least two restrictions are configured as substantially spherical portions disposed between two adjacent breaks. The flow restriction is, for example, spherical, and the outer wall of the flow restriction is tangential to the inner wall of the extrusion opening. This makes it possible to reduce the outflow rate of the preparation material in the axial direction of the extrusion orifice. The preparation material is, for example, a paste made of silica gel or organic rubber. The opening can guide the preparation material certainly the outflow of opening department makes the preparation material be in extrusion department expands in to the duct for the preparation material can laminate patient's duct inner wall more, improves the accuracy of customization auris impression.
Preferably, the flow restrictor extends from an edge of the extrusion port towards a bore axis of the extrusion port; the extension length of the flow restriction does not exceed two thirds of the radius of the extrusion opening. The size of the flow restriction is, for example, one quarter of the orifice diameter of the extrusion opening. The restriction is sized to control the rate of infusion of the self-contained material.
Preferably, the flow restrictor is blunt. Because the flow limiting piece is arranged at the end part of the extrusion port, the safety of the device can be greatly improved when the flow limiting piece is a blunt surface, and the operation safety is improved.
Preferably, the flow restriction has a polished and/or smooth surface portion, in particular a mechanically polished surface portion and/or an electropolished surface portion.
Preferably, the plunger further comprises:
a sensor disposed at an end of the piston for detecting a consumption amount of the auriprint preparation material;
and the alarm is arranged at the tail end of the push rod and gives an alarm when the consumption reaches a preset threshold value.
Preferably, the outer peripheral wall of the cylinder is further provided with a volume scale.
Preferably, the area of the expanded portion is not less than one-half of the surface area of the flow restriction.
Preferably, the barrel tip is provided with a conical part, the bottom of the conical part is connected with the far end of the barrel body in a sealing mode, and the top of the conical part is provided with the extrusion opening.
Preferably, the distal end of the piston is provided with a stepped end portion that fits the conical portion of the barrel tip.
Preferably, the tail end of the push rod is provided with a push handle, and the alarm is arranged on the push handle.
The invention at least comprises the following beneficial effects: according to the auris impression preparation material injection device, the flow limiting piece is arranged on the periphery of the extrusion opening, so that the perfusion speed of the preparation material can be reduced, the impact force of the preparation material on the eardrum of a patient during perfusion is reduced, and the eardrum of the patient is protected. Simultaneously extension portion not only can be used for offsetting the flow-limiting piece is to filling the influence of speed, also can change the outflow direction when preparing the material and filling simultaneously for preparing the material by extruding the mouth to diffusing all around when filling, realize that the preparation material can laminate patient's duct inner wall more, thereby improve the accuracy of customization auris impression. According to the auris impression preparation material injection device, the sensor and the alarm are arranged on the piston, the perfusion amount is detected in real time, and the alarm is given out in time when the perfusion amount is excessive, so that the auditory meatus of a patient is prevented from being damaged. The auris impression preparation material injection device has the advantages of simple structure and low processing cost, and can greatly improve the preparation efficiency of the customized auris impression.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of an ear impression preparation material injection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an ear impression preparation material injection apparatus according to another embodiment of the present invention;
fig. 3 is a schematic top view of the cartridge tip of the ear impression preparation material injection apparatus according to one embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1, the present invention provides an ear impression preparation material injection apparatus, comprising:
a barrel 100 having a distal end 101 and a proximal end 102 in the injection direction, the proximal end 102 extending, for example, with two wings to facilitate intraoperative control of the position of the barrel 100 during infusion.
A plunger 200 configured to move within the barrel 100, the plunger 200 comprising a piston 201 and a push rod 202; a sensor 203 is arranged at the end of the piston 201, an alarm 204 is connected to the tail end of the push rod 202, and for example, a chip for setting the preset threshold value and an alarm for executing chip instructions are arranged in the alarm 204. The sensor 203 is used for detecting the perfusion amount of the preparation material so as to send out an alarm when the perfusion amount reaches a preset threshold value. The preset threshold is preset, for example, according to the state of the ear canal of the patient.
And a barrel tip 300 sealingly connected to the distal end 101 of the barrel 100, the distal end of the barrel tip 300 being provided with an extrusion port 301; wherein the extrusion opening 301 is configured to include at least two expansions 302 and at least two restrictions 303; the at least two expanded parts 302 are configured as gaps formed by cutting off partial periphery of the extrusion opening 301; the at least two restrictions 303 are configured as substantially spherical portions disposed between two adjacent breaks. The flow restriction 303 is arranged in a spherical shape, and the outer wall of the flow restriction 303 is tangential to the inner wall of the extrusion opening 301. This makes it possible to reduce the outflow rate of the preparation material in the axial direction of the orifice of the extrusion port 301. The extension portion 302 can guide the preparation material to flow out from the notch, so that the preparation material is in the extrusion opening 301 expands towards the inner part of the auditory canal, so that the preparation material can be attached to the inner wall of the auditory canal of a patient, and the accuracy of the customized ear impression is improved.
When the device is used, the preset threshold value is set according to the perfusion amount of the preparation material required by customizing the ear impression, and the sensor 203 is started; then, the preparation material is injected into the cylinder 100, the push rod 202 is pushed to properly control the pouring speed of the preparation material, and the preparation material can be stopped automatically or stopped according to an alarm after the pouring is finished. At present, when the ear impression is prepared, the perfusion speed of the perfusion preparation material is controlled according to the experience of a doctor, and if the extrusion opening of the injector is too large, the outflow speed of the preparation material is too large, so that the tympanic membrane of a patient is damaged. When the extrusion port is too small, the doctor needs to apply a larger pushing force, so that the stability of perfusion cannot be ensured, and the auditory canal of the patient can be accidentally injured by displacement. According to the auris impression preparation material injection device, the outflow speed of the preparation material is buffered through the flow limiting piece 303, and meanwhile, the resistance of the outflow of the preparation material is reduced by utilizing the expansion part 302, so that the perfusion stability is improved.
In one embodiment, as shown in fig. 1 and 3, the flow restrictor 303 extends from the edge of the extrusion port 301 to the hole axis of the extrusion port 301; the extension of the restriction 303 does not exceed two thirds of the radius of the extrusion opening 301. The size of the flow restriction 303 is, for example, one quarter of the diameter of the extrusion opening 301. The restriction 303 is sized to control the rate of pouring of the self-contained material.
In one embodiment, as shown in FIG. 1, the flow restrictor 303 is blunt. Since the flow restriction 303 is provided on the periphery of the extrusion port 301. In the initial perfusion position, the contact probability with the inner wall of the auditory canal of the patient is the highest when the auditory canal is closest to the tympanic membrane of the patient, so that the flow limiting piece 303 is arranged to be a blunt surface in order to protect the auditory canal of the patient from being damaged, thereby greatly improving the safety of the device and improving the operation safety. The flow restriction 303 is provided, for example, in an elliptical shape, a spherical shape, a disc shape, or the like as needed, and can serve as a structure for restricting the outflow rate of the preparation material.
In one embodiment, as shown in fig. 1-3, the flow restrictor 303 has a polished and/or smooth surface portion, particularly a mechanically polished surface portion and/or an electropolished surface portion. Of course, the tip 300 may be formed by direct drip casting on the periphery of the outlet 301 by a drip casting method, depending on the material (plastic or metal) of the tip.
In one embodiment, as shown in fig. 1 and 2, the plunger 200 further comprises:
a sensor 203 arranged at an end of the piston 201 for detecting a consumption of the auris impression preparation material;
and an alarm 204 provided at the rear end of the push rod 202, for giving an alarm when the consumption reaches a preset threshold. As shown in fig. 1, an enlarged portion 2021 is provided at the rear end of the push rod 202, the alarm 204 is disposed in the enlarged portion 2021, for example, and the alarm 204 includes a built-in chip and an indicator light or a buzzer (not shown in the figure), for example. The enlarged portion 2021 may also serve as a stop and the proximal end of the barrel 100 may be correspondingly configured to enlarge the proximal end 102. The enlarged proximal end 102 may also extend beyond the two wings 1021 for the hand of the practitioner.
In one embodiment, as shown in fig. 1 and 2, the outer circumferential wall of the cylinder 100 is further provided with a volume scale 103. The cylinder 100 is transparent, for example, and the volume scale 103 is used for providing volume indication for an operator, so that waste of preparation materials is avoided.
In one embodiment, as shown in FIG. 1, the area of the expanded portion 302 is no less than one-half of the surface area of the flow restrictor 303. Accordingly, the preparation material stopped by the flow restrictor 303 is released from the extension 302, and the outflow direction of the preparation material can be changed. Therefore, the contact area of the preparation material and the inner wall of the auditory canal of the patient can be expanded during perfusion, and the accuracy of the customized ear impression is improved.
In one embodiment, as shown in fig. 1 and 2, the tip 300 has a conical portion, the bottom of the conical portion is connected to the distal end 101 of the barrel 100 in a sealing manner, and the top of the conical portion is opened with the extrusion opening 301. The conical portion is used for reducing the outflow speed of the preparation material from the extrusion port 301 and simultaneously reducing the impact force when the preparation material flows out. Not only can improve the precision of preparing the auricle impression, but also can improve the safety in the preparation process.
In one embodiment, as shown in fig. 1, the distal end of the plunger 201 is provided with a stepped tip 2011 that fits into the conical portion of the barrel tip 300. Thus, waste of preparation materials can be reduced.
In one embodiment, as shown in fig. 2, the tail end of the push rod 202 is provided with a push handle 205, and the alarm 204 is arranged on the push handle 205. The push handle 205 is used for reducing the working strength of the doctor and improving the working efficiency of the doctor. The alarm 204 is arranged on the push handle 205, so that a doctor can observe the perfusion process more intuitively and conveniently.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. An auris impression preparation material injection device, comprising:
a barrel having a distal end and a proximal end in an injection direction,
a plunger configured to move within the barrel, the plunger comprising a piston and a pushrod;
the barrel tip is connected to the far end of the barrel body in a sealing mode, and the far end of the barrel tip is provided with an extrusion opening; wherein the extrusion port is configured to include at least two expansions and at least two flow restrictions; the at least two expansion parts are configured to cut off the periphery of the extrusion opening part to form gaps; the at least two restrictions are configured as substantially spherical portions disposed between two adjacent breaks.
2. The auriprint preparation material injection apparatus as set forth in claim 1, wherein the flow restrictor extends from an edge of the extrusion port toward a bore axis of the extrusion port; the extension length of the flow restriction does not exceed two thirds of the radius of the extrusion opening.
3. The auriimpression preparation material injection device according to claim 1, wherein the flow restriction member is a blunt surface.
4. An auriprint preparation material injection device as set forth in claim 4, characterized in that the flow restriction has a polished and/or smooth surface section, in particular a mechanically polished surface section and/or an electropolished surface section.
5. The auri-impression preparation material injection apparatus as set forth in claim 1, wherein the plunger further comprises:
a sensor disposed at an end of the piston for detecting a consumption amount of the auriprint preparation material;
and the alarm is arranged at the tail end of the push rod and gives an alarm when the consumption reaches a preset threshold value.
6. The auriimpression preparation material injection apparatus as set forth in claim 1, wherein a capacity scale is further provided on the outer circumferential wall of the cylinder.
7. The auriimpression preparation material injection device according to claim 1, wherein the area of the expanded portion is not less than half of the surface area of the flow restriction.
8. The auri-impression preparation material injection device according to claim 1, wherein the barrel tip has a conical portion, a bottom of the conical portion is sealingly connected to the distal end of the barrel, and a top of the conical portion opens the extrusion port.
9. The auriimpression preparation material injection device according to claim 8, wherein the distal end of the piston is provided with a stepped end portion that fits the conical portion of the cylinder tip.
10. The auriimpression preparation material injection apparatus as set forth in claim 5, wherein a trailing end of the push rod is provided with a push handle, and the alarm is provided on the push handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659096.9A CN114272016A (en) | 2021-12-31 | 2021-12-31 | Auriprint preparation material injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659096.9A CN114272016A (en) | 2021-12-31 | 2021-12-31 | Auriprint preparation material injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114272016A true CN114272016A (en) | 2022-04-05 |
Family
ID=80878987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111659096.9A Pending CN114272016A (en) | 2021-12-31 | 2021-12-31 | Auriprint preparation material injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114272016A (en) |
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2021
- 2021-12-31 CN CN202111659096.9A patent/CN114272016A/en active Pending
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