Pushing and injecting device for filling remaining filler in needle
By designing a bolus injection device for filling the remaining filler in the needle, the structure of the piston and core rod channel is used to solve the waste of filling the residual filler in the needle lumen, and the efficient use of the filler and postoperative operation are achieved Improved effect.
Patent Information
- Application Number
- CN202420899889.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-28
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-28
AI Technical Summary
When performing surgery for coarse filling needles, there are more fillings left in the filling needle cavity, resulting in waste of filling materials and insufficient postoperative effects.
A bolt injection device is designed, including a filler needle, an outer tube and an inner core push rod. Through the structure of the piston and the core rod channel, the residual filler in the filling needle cavity can be effectively injected into the area to be filled.
The efficient use of fillers is achieved, the operation is simplified, the cost is reduced, and the postoperative effect is improved.
Smart Images
Figure CN222426088U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of medical equipment, and in particular relates to a push injection device for retaining a filling material in a filling needle. Background Art
[0002] In clinical facial autologous fat filling correction surgery, because the amount of fat sucked from the body is large enough, the filling needle is thin, and there is not much filler left in the needle cavity, we generally rarely consider the waste of residual fat in the filling needle cavity. However, with the development of surgical concepts and technologies, when performing some filling surgeries, we need to use thicker filling needles. At this time, after the filling is completed, more filler will remain in the filling needle cavity. When the amount of filler is limited and the filling area is insufficient, we have to consider the full utilization of the residual filler in the filling needle cavity.
[0003] For example, with the aging of the face, most patients with eye bags have sunken tear grooves and mid-face grooves. How to fill the excess bulging orbital fat into the tear grooves during eye bag correction surgery so that the eye bags and tear grooves can be corrected at the same time is one of the topics that plastic surgeons have been exploring and researching. We first remove the bulging excess orbital fat, then cut the removed orbital fat into small pieces, and then use a thicker filling needle to fill the processed fat into the tear grooves. This is more minimally invasive and safer than traditional procedures, and can also achieve a good postoperative effect. Because the amount of orbital fat removed during eye bag surgery is very limited and precious, if there is a lot of fat left in the filling needle cavity during the operation, it is likely to cause insufficient filling of the tear grooves, affecting the postoperative effect. At this time, it is particularly important to make full use of the residual fat in the filling needle cavity.
[0004] In view of the above problems, it is necessary to develop a device that is simpler to operate, more convenient to use, and easier to produce, so as to solve the problem of waste of residual filling in the filling needle cavity. Utility Model Content
[0005] The purpose of the utility model is to provide a push injection device for retaining a filling material in a filling needle, which can solve the problems of complex structure, inconvenient operation and high cost of the existing equipment mentioned in the above background technology.
[0006] The technical solution of the utility model is:
[0007] A push injection device for retaining a filling material in a filling needle, comprising a filling needle, an outer tube and an inner core push rod;
[0008] The outer tube has a nipple connected to the pintle of the filling needle at one end, a wing-shaped protrusion at the other end, and a core rod channel running through the center; the core rod channel includes a core rod channel nipple section, a core rod channel section needle tube section, and a core rod channel outer tube section;
[0009] The inner core push rod is provided with a piston at one end and a handle at the other end, wherein the piston is slidably arranged in the nipple section of the core rod channel;
[0010] The inner diameter of the nipple section of the core rod channel and the inner diameter of the outer tube section of the core rod channel are both larger than the inner diameter of the needle tube section of the core rod channel section;
[0011] The outer diameter of the piston is adapted to the inner diameter of the nipple section of the core rod channel;
[0012] The inner diameter of the nipple section of the core rod channel is the same as the inner diameter of the needle tube of the filling needle.
[0013] Furthermore, a side injection hole is provided on the filling needle.
[0014] Furthermore, the side injection hole is arranged at one end of the filling needle close to the needle tip.
[0015] Furthermore, the needle plug of the filling needle is provided with an internal thread, and the nipple is provided with an external thread matching the internal thread.
[0016] Furthermore, the wing-shaped protrusion and the handle are both provided with anti-slip structure.
[0017] Furthermore, the number of the wing-shaped protrusions is two and they are symmetrically arranged.
[0018] Furthermore, a scale is provided on the rod body of the inner core push rod.
[0019] Furthermore, the rod body of the inner core push rod is divided into an inner core push rod needle tube section and an inner core push rod outer tube section, which are threadedly connected, wherein the length of the inner core push rod outer tube section is equal to the length of the core rod channel outer tube section.
[0020] The utility model can achieve the following beneficial effects:
[0021] Compared with the prior art, the utility model has the advantages of simple structure, convenient operation, low cost, etc., and improves the utilization rate of the filler. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the structure of the utility model;
[0023] Figure 2 It is a schematic diagram of the structure after decomposition of the utility model.
[0024] In the figure, 1-filling needle; 2-outer tube; 3-inner core push rod; 11-side injection hole; 21-nipple; 22-wing-shaped protrusion; 23-core rod channel; 31-piston head; 32-handle; 33-inner core push rod needle tube section; 34-inner core push rod outer tube section; 231-core rod channel nipple section; 232-core rod channel section needle tube section; 233-core rod channel outer tube section. DETAILED DESCRIPTION
[0025] In order to better understand the purpose, structure and function of the utility model, the utility model, a push injection device for retaining a filling material in a filling needle, is further described in detail below with reference to the accompanying drawings.
[0026] like Figure 1 and Figure 2 As shown, a push injection device for retaining a filling material in a filling needle comprises a filling needle 1, an outer tube 2 and an inner core push rod 3;
[0027] The outer tube 2 has a nipple 21 at one end connected to the pintle of the filling needle 1, a wing-shaped protrusion 22 at the other end, and a core rod channel 23 through the center; the core rod channel 23 includes a core rod channel nipple section 231, a core rod channel section needle tube section 232 and a core rod channel outer tube section 233;
[0028] The inner core push rod 3 is provided with a piston 31 at one end and a handle 32 at the other end, wherein the piston 31 is slidably arranged in the nipple section 231 of the core rod channel;
[0029] The inner diameter of the core rod channel nipple section 231 and the inner diameter of the core rod channel outer tube section 233 are both larger than the inner diameter of the core rod channel section needle tube section 232. The setting that the inner diameter of the core rod channel nipple section 231 is larger than the inner diameter of the core rod channel section needle tube section 232 can play a role in limiting the piston 31;
[0030] The outer diameter of the piston 31 is adapted to the inner diameter of the core rod channel nipple section 231 to ensure good sealing performance;
[0031] The inner diameter of the core rod channel nipple section 231 is the same as the inner diameter of the needle tube of the filling needle 1 to ensure that the piston 31 can smoothly enter the needle tube of the filling needle 1.
[0032] Preferably, the needle plug of the filling needle 1 is provided with an internal thread, and the nipple 21 has an external thread matching the internal thread; the above structure can make the connection between the filling needle 1 and the outer tube 2 more stable, and they will not come off during the pulling and rotating process.
[0033] Preferably, a side injection hole 11 is provided on the filling needle 1 , and further, the side injection hole 11 is arranged at one end of the filling needle 1 close to the needle tip.
[0034] Preferably, the wing-shaped protrusion 22 and the handle 32 are both provided with an anti-slip structure. The provision of the anti-slip structure makes it easier for doctors to operate and reduces the chance of accidents. Furthermore, the number of the wing-shaped protrusions 22 is preferably two, which are symmetrically arranged.
[0035] Preferably, the rod body of the inner core push rod 3 is provided with a scale for easy reference to the amount of the filling material to be injected.
[0036] Furthermore, the rod body of the inner core push rod 3 is divided into an inner core push rod needle tube section 33 and an inner core push rod outer tube section 34, which are threadedly connected, wherein the length of the inner core push rod outer tube section 34 is equal to the length of the core rod channel outer tube section 233. When the inner core push rod outer tube section 34 is completely placed in the core rod channel outer tube section 233, the piston 31 is just flush with the end of the side injection hole 11 away from the needle tip of the filling needle 11, and at this time it can be considered that the filler is completely injected.
[0037] The working principle of the utility model is briefly described below:
[0038] Taking eye bag surgery combined with tear trough filling as an example, the eye bag and tear trough filling area are routinely designed, and the excess orbital septum fat from the bulging eye bag is removed and reserved for use; the detailed process of eye bag surgery is not described here;
[0039] We first cut the removed orbital septum fat into small pieces so that it can pass through the needle tube and the side through hole 11 of the filling needle 1 smoothly, and then fill the processed small pieces of orbital septum fat into a 1mL ordinary surgical syringe, and then connect the 1ml ordinary surgical syringe filled with fat to the filling needle 1; it should be noted that the filling needle 1 can be connected to the device composed of the outer tube 2 and the inner core push rod 3, and can also be connected to an ordinary surgical syringe. It is best to set anti-slip patterns on the surface of the needle plug of the filling needle 1, and the needle plug is preferably thick, thin, long and short to facilitate the finger to twist and hold the needle, and the needle tip is conical, which is convenient for the filling needle to rotate and insert the needle;
[0040] A small hole is made at the distal end of the tear groove filling area near the outer canthus, and a filling needle 1 equipped with a 1 ml common surgical syringe is inserted through the small hole into the filling area along the surface of the inferior orbital periosteum, and fat is injected into the area to be filled;
[0041] After the fat in the 1mL ordinary surgical syringe is filled, we remove the 1mL ordinary surgical syringe from the filling needle 1. At this time, there is still some orbital septum fat remaining in the lumen of the filling needle 1. We then connect the filling needle 1 to the device composed of the outer tube 2 and the inner core push rod 3, and then push the inner core push rod 3 to fill the remaining fat in the filling needle lumen into the area to be filled.
[0042] It is understandable that the amount of orbital fat removed during eye bag surgery is very limited. If there is any waste, it may cause insufficient filling of the tear trough depression area. The push injection device used to retain the filler in the filling needle can well fill it with a fairly matched amount.
[0043] The above description is only a preferred specific implementation mode of the present invention and is not a limitation of the present invention. Any equivalent substitutions and modifications made by those skilled in the art without departing from the guidance of the present invention shall be deemed to fall within the protection scope of the present invention.
Claims
1. A push injection device for retaining a filling material in a filling needle, comprising a filling needle (1), characterized in that: It also includes an outer tube (2) and an inner core push rod (3); The outer tube (2) has a nipple (21) at one end connected to the pintle of the filling needle (1), a wing-shaped protrusion (22) at the other end, and a core rod channel (23) running through the center; the core rod channel (23) comprises a core rod channel nipple section (231), a core rod channel section needle tube section (232), and a core rod channel outer tube section (233); The inner core push rod (3) has a piston (31) at one end and a handle (32) at the other end, wherein the piston (31) is slidably disposed in the nipple section (231) of the core rod channel; The inner diameter of the core rod channel nipple section (231) and the inner diameter of the core rod channel outer tube section (233) are both greater than the inner diameter of the core rod channel section needle tube section (232); The outer diameter of the piston (31) is adapted to the inner diameter of the core rod channel nipple section (231); The inner diameter of the core rod channel nipple section (231) is the same as the inner diameter of the needle tube of the filling needle (1).
2. The push injection device for filling a filling material retained in a filling needle according to claim 1, characterized in that: The filling needle (1) is provided with a side injection hole (11).
3. The push injection device for filling a filling material retained in a filling needle according to claim 2, characterized in that: The side injection hole (11) is arranged on an end of the filling needle (1) close to the needle tip.
4. The push injection device for filling a filling material retained in a filling needle according to claim 1, characterized in that: The needle plug of the filling needle (1) is provided with an internal thread, and the nipple (21) is provided with an external thread matching the internal thread.
5. The push injection device for filling a filling material retained in a filling needle according to claim 1, characterized in that: The wing-shaped protrusion (22) and the handle (32) are both provided with anti-slip pattern structures.
6. The push injection device for filling a filling material retained in a filling needle according to claim 1, characterized in that: The number of the wing-shaped protrusions (22) is two and they are symmetrically arranged.
7. The push injection device for filling a filling material retained in a filling needle according to claim 1, characterized in that: The rod body of the inner core push rod (3) is provided with scales.
8. The push injection device for filling a filling material retained in a filling needle according to claim 7, characterized in that: The rod body of the inner core push rod (3) is divided into an inner core push rod needle tube section (33) and an inner core push rod outer tube section (34), which are threadedly connected, wherein the length of the inner core push rod outer tube section (34) is equal to the length of the core rod channel outer tube section (233).