Filler Syringes

Abstract

The present invention discloses a filling syringe, comprising a core tube, a sleeve, a base and an adjusting member, wherein the sleeve is connected to the base, an injection channel arranged along the axial direction is arranged in the core tube, the core tube comprises a curved portion, an intermediate portion and a matching portion, the sleeve is sleeved outside the curved portion and the intermediate portion, the adjusting member is rotatably arranged on the base, the adjusting member is transmission-matched with the matching portion, the rotation of the adjusting member can drive the matching portion to translate, so that the core tube extends out or retracts into the sleeve, the curved portion is made of a shape memory material, and when the curved portion extends out from the sleeve, the curved portion can be automatically bent. In the above-mentioned filling syringe, the curved portion can be automatically bent when it extends out of the sleeve, so that even if the curved portion is retracted into the sleeve and then extends out again, the bending can be realized, so if a straight tube is required, the adjusting member can be adjusted to make the curved portion retract into the sleeve, and if a curved tube is required, the adjusting member can be adjusted to make the curved portion extend out of the sleeve, and the direction of the injection channel outlet can be adjusted according to the distance that the curved portion extends out of the sleeve, which can effectively improve the filling effect.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a filling syringe. Background Art

[0002] Bone injury has always been a difficult problem in the medical field. Since bones are located in the human body and are difficult to regenerate, it is difficult to repair the damaged bones after bone injury occurs. Traditional syringes can inject fillers into bones, but when the surgical environment is complex, the syringe cannot reach the predetermined area, resulting in poor filling effect and failure to achieve the surgical effect. Summary of the invention

[0003] Based on this, the present invention aims to overcome the defects of the prior art and provide a filling syringe with good filling effect.

[0004] The technical solution is as follows:

[0005] A filling syringe comprises a core tube, a sleeve, a base and an adjusting member, wherein the sleeve is connected to the base, an injection channel arranged axially is arranged in the core tube, the core tube comprises a curved portion, an intermediate portion and a matching portion, the sleeve is sleeved outside the curved portion and the intermediate portion, the adjusting member is rotatably arranged on the base, the adjusting member is in transmission cooperation with the matching portion, the rotation of the adjusting member can drive the matching portion to translate, so that the core tube extends out of or retracts into the sleeve, the curved portion is made of shape memory material, and when the curved portion extends out of the sleeve, the curved portion can automatically bend.

[0006] The above-mentioned filling material syringe can utilize the injection channel of the core tube for injection, and the sleeve is sleeved outside the curved part and the middle part, and the matching part is transmission-coordinated with the adjusting part. Since the sleeve is connected to the base, the adjusting part can be rotatably arranged on the base, and the core tube can be extended or retracted into the sleeve by rotating the adjusting part. Since the material of the curved part is shape memory material, it has the ability to undergo elastic deformation and can be retracted into the sleeve through elastic deformation, and the curved part can be automatically bent when it is extended out of the sleeve, so even if the curved part is retracted into the sleeve and then extended again, it can still be bent. If a straight tube is required, the adjusting part can be adjusted to retract the curved part into the sleeve, and if a curved tube is required, the adjusting part can be adjusted to extend the curved part out of the sleeve, and the direction of the injection channel outlet can be adjusted according to the distance that the curved part extends out of the sleeve, so that the above-mentioned filling material syringe can be better approached to the predetermined position and injected, which can effectively improve the filling effect.

[0007] In one embodiment, the mating portion passes through the adjusting piece and is threadably engaged with the adjusting piece, the base includes a first split piece and a second split piece that are detachably connected, the first split piece and the second split piece form an installation opening, the adjusting piece is located in the installation opening, the sleeve is connected to the first split piece, and the core tube passes through the first split piece, the adjusting piece and the second split piece in sequence.

[0008] In one of the embodiments, a through hole is provided on the first split component, the core tube passes through the through hole, a guide protrusion is provided in the through hole, and a guide groove matching the guide protrusion is provided on the matching portion.

[0009] In one embodiment, a groove is provided on the side of the adjusting member close to the second split member, an annular structure is provided on the inner wall of the groove along the circumferential direction, a limiting portion for extending into the groove is provided on the second split member, and a sliding groove for slidingly cooperating with the annular structure is provided on the outer surface of the limiting portion.

[0010] In one embodiment, the sleeve includes a sleeve connection portion and an adjustment portion connected to each other, the sleeve connection portion is sleeved outside the bending portion and the middle portion, the adjustment portion is connected to the first split component, and the adjustment portion can move relative to the first split component.

[0011] In one embodiment, a protrusion is provided at one end of the first split member away from the second split member, and the adjustment portion is sleeved outside the protrusion and threadedly engaged with the protrusion.

[0012] In one embodiment, the thickness of the first split member is smaller than the outer diameter of the adjusting member, a clearance groove for accommodating the adjusting member is provided on the first split member, and the matching portion passes through the bottom surface of the clearance groove.

[0013] In one embodiment, the give way groove includes a first groove section and a second groove section which are arranged in sequence along the axial direction of the matching portion, the inner diameter of the first groove section matches the outer diameter of the adjusting member, the inner diameter of the first groove section is smaller than the inner diameter of the second groove section, the matching portion passes through the bottom surface of the first groove section, and the first limiting opening and the second limiting opening are respectively provided on the opposite side walls in the second groove section, the second split member is provided with a first clamping portion and a second clamping portion for extending into the second groove section, the end of the first clamping portion is bent in a direction away from the second clamping portion, and the end of the second clamping portion is bent in a direction away from the first clamping portion, the end of the first clamping portion can be screwed into the first limiting opening, and the end of the second clamping portion can be screwed into the second limiting opening.

[0014] In one of the embodiments, anti-slip stripes are provided on the outer side of the adjusting member.

[0015] In one of the embodiments, an outlet communicating with the injection channel is provided at the end of the curved portion, and the outlet is arranged toward a curved direction away from the curved portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of an explosion of a filler syringe according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic structural diagram of a filling material syringe according to an embodiment of the present invention;

[0018] Figure 3 is a cross-sectional view of a filling material syringe according to an embodiment of the present invention;

[0019] Figure 4 It is a structural schematic diagram of the first split component according to an embodiment of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the core tube according to an embodiment of the present invention;

[0021] Figure 6 is a schematic structural diagram of a second split component according to an embodiment of the present invention;

[0022] Figure 7 is a cross-sectional view of the first split component according to an embodiment of the present invention;

[0023] Figure 8 for Figure 3 AA section view;

[0024] Fig. 9 for Figure 1 A magnified schematic diagram of point B in the middle.

[0025] Description of reference numerals:

[0026] 100, core tube, 110, bending portion, 111, outlet, 120, middle portion, 130, matching portion, 131, guide groove, 140, external connection portion, 200, sleeve, 210, sleeve portion, 220, adjustment portion, 300, base, 310, first split member, 311, through hole, 312, guide protrusion, 313, yield groove, 313a, first groove section, 313b, second groove section, 313c, first limiting opening, 313d, second limiting opening, 313e, first gear portion, 313f, second gear portion, 314, protrusion, 320, second split member, 321, limiting portion, 322, slide groove, 323, first clamping portion, 324, second clamping portion, 400, adjustment member, 401, groove. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0031] In this specific embodiment, the filler syringe is mainly used for injection filling of bone cement, but in other embodiments, the above-mentioned filler syringe can also be used for injection filling of other materials, such as hyaluronic acid and other materials in the medical beauty field; or viscose and other materials in the engineering field.

[0032] like Figure 1 and Figure 2 As shown, an embodiment discloses a filling syringe, comprising a core tube 100, a sleeve 200, a base 300 and an adjusting member 400, wherein the sleeve 200 is connected to the base 300, an injection channel arranged along the axial direction is arranged in the core tube 100, the core tube 100 comprises a curved portion 110, a middle portion 120 and a matching portion 130, the sleeve 200 is sleeved outside the curved portion 110 and the middle portion 120, the adjusting member 400 is rotatably arranged on the base 300, the adjusting member 400 is transmission-matched with the matching portion 130, the rotation of the adjusting member 400 can drive the matching portion 130 to translate, so that the core tube 100 extends out of or retracts into the sleeve 200, the material of the curved portion 110 is a shape memory material, and when the curved portion 110 is extended from the sleeve 200, the curved portion 110 can be automatically bent.

[0033] The above-mentioned filling material syringe can use the injection channel of the core tube 100 for injection, and the sleeve 200 is sleeved outside the curved portion 110 and the middle portion 120. The matching portion 130 is transmission-matched with the adjusting member 400. Since the sleeve 200 is connected to the base 300, the adjusting member 400 can be rotatably arranged on the base 300, and the adjusting member 400 can be rotated to make the core tube 100 extend or retract into the sleeve. Since the material of the curved portion 110 is a shape memory material, it has the ability to undergo elastic deformation and can be retracted into the sleeve 200 through elastic deformation, and the curved portion 110 is When the bending portion 110 extends out of the sleeve 200, it can bend automatically. Even if the bending portion 110 is retracted into the sleeve 200 and then extended again, it can still bend. If a straight tube is required, the adjusting member 400 can be adjusted to make the bending portion 110 retract into the sleeve 200. If a curved tube is required, the adjusting member 400 can be adjusted to make the bending portion 110 extend out of the sleeve 200. The direction of the injection channel outlet 111 can be adjusted according to the distance that the bending portion 110 extends out of the sleeve 200, so that the above-mentioned filling material syringe can be closer to the predetermined position and inject better, which can effectively improve the filling effect.

[0034] The above-mentioned adjustment of the direction of the injection channel outlet 111 according to the distance that the curved portion 110 extends out of the sleeve 200 is specifically as follows: the curved portion 110 gradually extends out of the sleeve 200, the bending degree of the extended portion of the curved portion 110 also changes accordingly, and at this time, the direction of the injection channel outlet 111 also changes.

[0035] In addition, the extension or retraction of the bending portion 110 is adjusted by rotating the adjusting member 400, which is simple to operate and can control the extension distance more accurately, thereby reducing the burden on the user.

[0036] Optionally, the entire core tube 100 is made of shape memory material; or the curved portion 110 on the core tube 100 is made of shape memory material.

[0037] In one embodiment, if Figure 2 and Figure 3As shown, the mating portion 130 is passed through the adjusting member 400 and is threadedly matched with the adjusting member 400, the base 300 includes a first split member 310 and a second split member 320 that are detachably connected, the first split member 310 and the second split member 320 form an installation opening, the adjusting member 400 is located in the installation opening, the sleeve 200 is connected to the first split member 310, and the core tube 100 is passed through the first split member 310, the adjusting member 400 and the second split member 320 in sequence. In the above structure, the first split part 310 and the second split part 320 are detachably connected, and the core tube 100 is sequentially passed through the first split part 310, the adjustment part 400 and the second split part 320. The core tube 100 can be replaced or adjusted by disassembling the first split part 310 and the second split part 320, so that the core tube 100 can better adapt to the specific environment and improve the filling effect. At the same time, the core tube 100 can be used as a guide for installation. By ensuring that the core tube 100 passes through various components, the various components can be more easily assembled together for easy use. In addition, due to the self-locking function of the thread, the core tube 100 can be prevented from moving again when used after the adjustment is completed, and the positioning effect of the core tube 100 is better.

[0038] Alternatively, if Figure 3 As shown, the core tube 100 further includes an external connection portion 140, which is disposed on a side of the matching portion 130 away from the middle portion 120, and the external connection portion is penetrated by a second split member 320 for communicating with an external pipeline. The external connection portion 140 can be connected to an external pipeline for conveying fillers.

[0039] In other embodiments, the transmission cooperation between the adjusting member 400 and the matching part 130 may be as follows: a gear is provided on the adjusting member 400, and a rack is provided on the matching part 130 along its axial direction. At this time, the rotation of the adjusting member 400 will also drive the matching part 130 to translate relative to the adjusting member 400, so that the core tube 100 is retracted or extended relative to the sleeve 200.

[0040] In other embodiments, the first split component 310 and the second split component 320 may also be integrally formed. In this case, the integrity is better and the filler syringe will not be unusable due to failure of the connection between the first split component 310 and the second split component 320 .

[0041] In one embodiment, if Figure 4 and Figure 5As shown, a through hole 311 is provided on the first split part 310, the core tube 100 is penetrated by the through hole 311, a guide protrusion 312 is provided in the through hole 311, and a guide groove 131 matching the guide protrusion 312 is provided on the matching part 130. Since the guide protrusion 312 can match with the guide groove 131 on the matching part 130, the guide protrusion 312 can guide and limit the core tube 100 when the core tube 100 moves, and can prevent the core tube 100 from rotating with the adjusting member 400, so as to ensure that the rotation of the adjusting member 400 can be converted into the movement along the axial direction of the core tube 100, thereby realizing the adjustment of the extension distance of the core tube 100. Moreover, the guide groove 131 is provided on the matching part 130 to prevent the core tube 100 from rotating with the adjusting member 400, and will not affect the threaded matching between the matching part 130 and the adjusting member 400.

[0042] Optionally, the side of the matching portion 130 away from the guide groove 131 is a plane, and the remaining part of the matching portion 130 is an external thread with the same outer diameter. In this case, the portion of the matching portion 130 that matches with the thread of the adjusting member 400 is small, which can reduce the friction between the matching portion 130 and the adjusting member 400, making it easier to rotate the adjusting member 400 and facilitating adjustment.

[0043] Optionally, the guide protrusion 312 is in the shape of an elongated strip and is arranged along the axial direction of the matching portion 130. This can better guide the core tube 100 and prevent it from rotating.

[0044] In one embodiment, if Figure 3 and Figure 6 As shown, a groove 401 is provided on the side of the adjusting member 400 close to the second split member 320, an annular structure is provided on the inner wall of the groove 401 along the circumferential direction, a limiting portion 321 for extending into the groove 401 is provided on the second split member 320, and a sliding groove 322 for slidingly cooperating with the annular structure is provided on the outer surface of the limiting portion 321. The sliding groove 322 on the outer surface of the limiting portion 321 cooperates with the annular structure on the inner wall of the groove 401, so that the adjusting member 400 can be rotated, and the limiting portion 321 can limit the adjusting member 400 to prevent the core tube 100 from deviating in the radial direction.

[0045] In one embodiment, if Figures 1 to 3 As shown, the sleeve 200 includes a sleeve connection portion 210 and an adjustment portion 220 connected to each other. The sleeve connection portion 210 is sleeved outside the bending portion 110 and the middle portion 120. The adjustment portion 220 is connected to the first split member 310, and the adjustment portion 220 can move relative to the first split member 310. At this time, the overall length of the sleeve 200 after being connected to the base 300 can be adjusted by moving the adjustment portion 200 relative to the first split member 310, and the length of the core tube 100 that can extend out of the sleeve 200 is correspondingly adjusted, which can be conveniently adjusted according to actual conditions.

[0046] In one embodiment, if Figure 3 As shown, a protrusion 314 is provided at one end of the first split member 310 away from the second split member 320, and the adjustment portion 220 is sleeved outside the protrusion 314 and threadedly engaged with the protrusion 314. The adjustment portion 220 can be moved relative to the first split member 310 by rotating the sleeve 200 through threaded engagement.

[0047] Specifically, the inner diameter of the adjustment portion 220 is larger than the inner diameter of the sleeve portion 210 , and the connection between the inner wall of the adjustment portion 220 and the inner wall of the sleeve portion 210 is an arc surface or an inclined surface, which can guide the core tube 100 to pass through the sleeve portion 210 and facilitate the assembly of the core tube 100 .

[0048] In one embodiment, if Figure 7 and Figure 8 As shown, the thickness of the first split part 310 is smaller than the outer diameter of the adjusting part 400, and a clearance groove 313 for placing the adjusting part 400 is provided on the first split part 310, and the matching portion 130 passes through the bottom surface of the clearance groove 313. At this time, the adjusting part 400 partially extends out of the first split part 310, which can facilitate the user to rotate the adjusting part 400. At the same time, the clearance groove 313 provided on the first split part 310 makes the overall structure more compact and reduces space occupation.

[0049] Optionally, the first split member 310 further includes a first branch portion and a second branch portion, the first branch portion and the second branch portion are respectively located on both sides of the clearance groove 313, and the first branch portion and the second branch portion are both provided with operation ports. When in use, different fingers can be inserted into the two operation ports, and then the adjustment member 400 is rotated, which is convenient for operation.

[0050] Specifically, the clearance groove 313 is connected to the through hole 311 , and the matching portion 130 can simultaneously threadably match with the adjusting member 400 and slide with the guide protrusion 312 , so that the core tube 100 can extend out or retract into the sleeve 200 as the adjusting member 400 rotates.

[0051] In one embodiment, if Figures 6 to 8As shown, the yielding groove 313 includes a first groove section 313a and a second groove section 313b which are sequentially arranged along the axial direction of the matching portion 130. The inner diameter of the first groove section 313a matches the outer diameter of the adjusting member 400. The inner diameter of the first groove section 313a is smaller than the inner diameter of the second groove section 313b. The matching portion 130 penetrates the bottom surface of the first groove section 313a. The second groove section 313b is provided with a first limiting opening 313c and a second limiting opening 313c on opposite side walls thereof. 3d, the second split part 320 is provided with a first clamping part 323 and a second clamping part 324 for extending into the second groove section 313b, the end of the first clamping part 323 is bent in a direction away from the second clamping part 324, and the end of the second clamping part 324 is bent in a direction away from the first clamping part 323, and the end of the first clamping part 323 can be screwed into the first limiting opening 313c, and the end of the second clamping part 324 can be screwed into the second limiting opening 313d. At this time, the end of the first clamping part 323 can be screwed into the first limiting opening 313c, and the end of the second clamping part 324 can be screwed into the second limiting opening 313d by rotating the second split part 320, so as to realize the clamping of the first clamping part 323 and the second clamping part 324, and facilitate assembly.

[0052] In one embodiment, if Figure 4 and Figure 8 As shown, a first stopper 313e is provided in the first limit opening 313c, and a second stopper 313f is provided in the second limit opening 313d. The first stopper 313e is provided at the left end of the first limit opening 313c, and the second stopper 313f and the first stopper 313e are symmetrically arranged with the axis of the adjusting member 400 as the axis of symmetry, and the end of the first clamping portion 323 and the end of the second clamping portion 324 are both arc-shaped. After the first clamping portion 323 is screwed into the first limit opening 313c, the end of the first clamping portion 323 can be limited by the first stopper 313e, and similarly, the end of the second clamping portion 324 can be limited by the second stopper 313f, so as to prevent the first split member 310 from over-turning relative to the second split member 320 or from relative displacement again after assembly, so as to ensure that the first split member 310 and the second split member 320 can be assembled accurately and have good stability during use. Meanwhile, the arc-shaped ends of the first clamping portion 323 and the second clamping portion 324 can prevent the ends of the first clamping portion 323 and the second clamping portion 324 from abutting against the second split component 320 when the first split component 310 is screwed into the second split component 320 .

[0053] Optionally, anti-slip stripes are provided on the outer side surface of the adjusting member 400 .

[0054] In other embodiments, the first split part 310 and the second split part 320 may also be detachably connected using other structures, for example, the second split part 320 is provided with an assembly hole and a bayonet, one end of the bayonet is provided on the outer surface of the second split part 320, and the other end of the bayonet is connected to the assembly hole, and the first split part 310 is provided with a boss, and the boss is provided with a spring, one end of the spring is connected to the boss, and the other end of the spring is provided with a buckle body and is spaced from the boss, and the buckle body can be snapped into the bayonet. The first split part 310 and the second split part 320 can be snapped together by inserting the boss into the assembly hole and snapping the buckle body into the bayonet, and then pressing the buckle body to make the buckle body exit the bayonet to separate the first split part 310 and the second split part 320, and the detachable connection between the first split part 310 and the second split part 320 can also be achieved at this time.

[0055] In one embodiment, if Figure 1 and Fig. 9 As shown, the end of the curved portion 110 is provided with an outlet 111 connected to the injection channel, and the outlet 111 is arranged toward the bending direction away from the curved portion 110. Since the situation is more complicated as the part is closer to the inner area, it is more difficult for the end of the curved portion 110 to approach the inner area. By arranging the outlet 111 at a side away from the bending direction of the curved portion 110, the curved portion 110 can be extended to the outside of the inner area first, and then the inner area can be injected and filled using the outlet 111, which can reduce the difficulty of operation and provide a filling effect.

[0056] Optionally, scale lines are provided at intervals along the circumference of the adjusting member 400, and the scale lines are used to correspond to the moving distance of the bending portion 110 relative to the sleeve 200. A reference line is provided on the base 300, and the scale lines can be used to understand the extension or retraction distance of the bending portion 110, and the reference line can also be used to understand the extension distance of the bending portion 110 relative to the previous operation, so as to more accurately control the extension distance of the bending portion 110.

[0057] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A filling syringe, characterized in that: The invention comprises a core tube, a sleeve, a base and an adjusting member, wherein the sleeve is connected to the base, an injection channel is arranged in the core tube along the axial direction, the core tube comprises a curved portion, an intermediate portion and a matching portion, the sleeve is sleeved outside the curved portion and the intermediate portion, the adjusting member is rotatably arranged on the base, the adjusting member is in transmission cooperation with the matching portion, the rotation of the adjusting member can drive the matching portion to translate, so that the core tube extends out of or retracts into the sleeve, the curved portion is made of a shape memory material, and when the curved portion extends out of the sleeve, the curved portion can bend automatically; The matching portion passes through the adjusting member and is threadedly matched with the adjusting member, the base includes a first split member and a second split member that are detachably connected, the first split member and the second split member form a mounting opening, the adjusting member is located in the mounting opening, the sleeve is connected to the first split member, the core tube passes through the first split member, the adjusting member and the second split member in sequence; the first split member is provided with a through hole, the core tube passes through the through hole, a guide protrusion is provided in the through hole, and a guide groove matching the guide protrusion is provided on the matching portion; The core tube further comprises an external connection portion, which is arranged on a side of the matching portion away from the middle portion, and the second split component is passed through the external connection portion for communicating with an external pipeline.

2. The filling syringe according to claim 1, characterized in that A groove is provided on the side of the adjusting member close to the second split member, an annular structure is provided on the inner wall of the groove along the circumferential direction, a limiting portion for extending into the groove is provided on the second split member, and a sliding groove for sliding cooperation with the annular structure is provided on the outer surface of the limiting portion.

3. The filling syringe according to claim 1, characterized in that The sleeve includes a sleeve connection portion and an adjustment portion which are connected to each other. The sleeve connection portion is sleeved outside the bending portion and the middle portion. The adjustment portion is connected to the first split component and can move relative to the first split component.

4. The filling syringe according to claim 3, characterized in that A protrusion is disposed at one end of the first split component away from the second split component, and the adjustment portion is sleeved outside the protrusion and threadedly matched with the protrusion.

5. The filling syringe according to claim 1, characterized in that The thickness of the first split component is smaller than the outer diameter of the adjusting component. The first split component is provided with a clearance groove for accommodating the adjusting component. The matching portion passes through the bottom surface of the clearance groove.

6. The filling syringe according to claim 5, characterized in that The yield groove includes a first groove section and a second groove section which are sequentially arranged along the axial direction of the matching portion, the inner diameter of the first groove section matches the outer diameter of the adjusting member, the inner diameter of the first groove section is smaller than the inner diameter of the second groove section, the matching portion passes through the bottom surface of the first groove section, and the first limiting opening and the second limiting opening are respectively arranged on the two opposite side walls in the second groove section, the second split member is provided with a first clamping portion and a second clamping portion for extending into the second groove section, the end of the first clamping portion is bent in a direction away from the second clamping portion, and the end of the second clamping portion is bent in a direction away from the first clamping portion, the end of the first clamping portion can be screwed into the first limiting opening, and the end of the second clamping portion can be screwed into the second limiting opening.

7. The filling syringe according to claim 6, characterized in that A first gear portion is provided in the first limit opening, and a second gear portion is provided in the second limit opening. The first gear portion is provided at the left end of the first limit opening, and the second gear portion and the first gear portion are symmetrically arranged with the axis of the adjusting member as the axis of symmetry, and the end portions of the first clamping portion and the end portions of the second clamping portion are both arc-shaped.

8. The filling syringe according to any one of claims 1 to 7, characterized in that: An outlet communicating with the injection channel is provided at the end of the curved portion, and the outlet is arranged toward a curved direction away from the curved portion.

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