An adjustable perfusion needle and an operating method thereof

Abstract

This invention relates to the field of surgical instruments, specifically to an adjustable irrigation needle and its operating method. It includes an outer mounting tube with an inner telescopic tube movably inserted within it. A rectangular mounting bracket is fixedly installed on the top of the outer mounting tube, and a tapered corrugated tube is disposed within the outer mounting tube. An outer retaining sleeve contacts a corresponding inner insert, thereby moving an angle-adjustable tube. The angle-adjustable tube aligns with a corresponding connecting tube. Moving the corresponding connecting tube causes the inner insert to engage within the outer retaining sleeve. This engagement of the outer retaining sleeve and the inner insert, along with the engagement of the angle-adjustable tube and the corresponding connecting tube, allows for adaptation to various complex and special usage situations. Whether in confined spaces, irregular layouts, or other limiting conditions, it ensures the verticality and straightness of the conduit communicating with the irrigation needle, preventing pressure on the conduit and ensuring stable fluid delivery.

Description

Technical Field

[0001] The invention relates to the technical field of surgical instruments, in particular to an adjustable perfusion needle and an operating method thereof. Background Art

[0002] The perfusion needle is mainly used for subcutaneous perfusion of anesthetic drugs. In plastic surgery liposuction or other subcutaneous tissue surgery, it is more perfect to use the perfusion needle for subcutaneous tissue perfusion. During a single perfusion, the subcutaneous tissue is anesthetized in a larger area, and the operation is better with the perfusion needle.

[0003] When the perfusion needle is used, it is necessary to ensure the rapid injection of the perfusion liquid. When perfusing the liquid, the perfusion liquid catheter and the perfusion needle need to be connected, the perfusion needle is inserted into the perfusion position, and the perfusion liquid is injected into the patient's body through the perfusion needle. The placement of the perfusion liquid catheter is affected by the installation angle of the perfusion needle. When the perfusion liquid catheter is tilted, the perfusion liquid catheter is pressurized, and the perfusion liquid delivery in the catheter is affected, thereby affecting the perfusion effect. Summary of the invention

[0004] The object of the present invention is to provide an adjustable perfusion needle and an operating method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable perfusion needle and an operating method thereof, comprising an outer mounting tube, an inner telescopic tube movably inserted in the outer mounting tube, a rectangular mounting frame fixedly mounted on the top of the outer mounting tube, a conical bellows arranged in the outer mounting tube, and the bottom end of the conical bellows is connected to the top end of the inner telescopic tube, an angle-adjustable tube is arranged in the rectangular mounting frame, and the bottom end of the angle-adjustable tube is connected to the top end of the conical bellows, a fixing frame consisting of a fixing ring and an outer connecting strip is arranged on both sides of the rectangular mounting frame, an inner mounting ring is coaxially arranged at the center position of the outer side of the outer connecting strip, four telescopic balls are distributed on the inner mounting ring in a circular array with the center of the inner mounting ring as the array center, a rotatable ring is rotatably connected to the fixing ring, The inner mounting ring is rotatably connected to a center rotating plate, an inner connecting plate is provided between the rotatable ring and the center rotating plate for connection, and the inner connecting plate is fitted with the inner side of the fixed ring, a movable buckle is fixedly installed on the center rotating plate, the movable buckle is movably engaged with the inner mounting ring, and a corresponding retractable ball-shaped groove is provided on the side where the movable buckle fits with the inner mounting ring, a fixed sleeve plate is provided between two adjacent rotatable rings, the fixed sleeve plate is fixedly provided on the outside of the top end of the angle adjustable tube, an outer sleeve is fixedly installed on the top end of the angle adjustable tube, a fixed sleeve seat is provided on the top and both sides of the rectangular mounting frame, a connecting pipe is movably installed in the fixed sleeve seat, an inner embedded sleeve is fixedly installed on the inner end of the connecting pipe, and the inner embedded sleeve and the outer sleeve are movably installed together.

[0006] Preferably, side fixing plates are provided on both sides of the bottom end of the angle-adjustable tube, and the side fixing plates are fixedly mounted on the bottom of the inner wall of the rectangular mounting frame.

[0007] Preferably, a positioning handle is fixedly mounted on the outer wall of the connecting tube.

[0008] Preferably, a positioning frame is provided in the outer mounting tube, and the positioning frame is located outside the angle-adjustable tube, a guide slot is provided on the positioning frame, a telescopic pressure plate is slidably connected in the guide slot, a handle bolt is threadedly connected on the positioning frame, and one end of the handle bolt located in the positioning frame is rotatably connected to the telescopic pressure plate.

[0009] Preferably, the telescopic pressing plate is adapted to the shape of the angle-adjustable tube at one side thereof close to the angle-adjustable tube, and the telescopic pressing plate is slidably connected to the guide slot.

[0010] Preferably, a gap is left between the positioning handle and the fixing sleeve seat, and the distance between the positioning handle and the fixing sleeve seat is greater than the distance between the outer clamping sleeve and the inner embedding sleeve.

[0011] Preferably, the swing angle of the angle-adjustable tube is the same as the swing angle of the movable buckle on the inner mounting ring.

[0012] Preferably, a threaded portion is provided at a position near the top of the outer wall of the inner telescopic tube, the threaded portion is externally threadedly connected with a rotatable sleeve, a spring is provided between the rotatable sleeve and the outer mounting tube, and the spring is movably sleeved outside the inner telescopic tube.

[0013] Preferably, a plurality of auxiliary rotating blocks are distributed in a ring array at the bottom of the rotating sleeve with the central axis of the rotating sleeve as the center.

[0014] A method for operating an adjustable perfusion needle comprises the following steps:

[0015] S1: Adjust the telescopic distance of the inner telescopic tube as needed, change the distance between the rotating sleeve and the outer mounting tube, drive the spring to deform, when holding the outer mounting tube part, the bottom end of the inner telescopic tube contacts the skin, the inner telescopic tube retracts into the outer mounting tube, prevents the inner telescopic tube from contacting the accidental touch position, when holding the inner telescopic tube part, the inner telescopic tube contacts the injection position, and the insertion operation of the inner telescopic tube is realized.

[0016] S2: According to the needs of perfusion, adjust the injection speed of the perfusion liquid, rotate the handle bolt, so that the telescopic pressure plate applies pressure to the side of the angle-adjustable tube. After the angle-adjustable tube is pressurized, the position of the angle-adjustable tube corresponding to the telescopic pressure plate is deformed, thereby changing the inner diameter of the angle-adjustable tube and adjusting the injection speed of the perfusion liquid.

[0017] S3: According to the installation requirements, the outer ferrule contacts the inner embedded sleeve at the corresponding position, the angle-adjustable tube is connected to the corresponding connecting tube, the perfusion liquid enters from the connecting tube, moves along the angle-adjustable tube, and then flows through the inner telescopic tube to enter the part that needs perfusion.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. According to the installation needs, adjust the position of the outer ferrule on the angle-adjustable tube in the rectangular mounting frame, let the outer ferrule contact the inner embedded sleeve at the corresponding position, thereby driving the angle-adjustable tube to move, the angle-adjustable tube to correspond to the connecting insert at the corresponding position, move the connecting insert at the corresponding position, and engage the inner embedded sleeve in the outer ferrule. The outer ferrule and the inner embedded sleeve are docked, and the angle-adjustable tube and the connecting insert at the corresponding position are docked. It can adapt to various complex and special usage conditions, whether it is narrow space, irregular layout or other restrictions, it can ensure the verticality and straightness of the pipeline connected to the perfusion needle, prevent the pipeline connected to the perfusion needle from being compressed, affect the delivery of the perfusion liquid, ensure the stability of liquid delivery, the connecting insert corresponds to different perfusion liquids, and can also realize the rapid replacement of perfusion materials at different interface positions.

[0020] 2. Adjust the telescopic distance of the inner telescopic tube as needed. The rotating sleeve moves on the inner telescopic tube to change the distance between the rotating sleeve and the outer mounting tube. The rotating sleeve applies pressure to the spring to drive the spring to deform. When holding the outer mounting tube, the bottom end of the inner telescopic tube contacts the skin, and the inner telescopic tube moves upward under pressure. The inner telescopic tube retracts into the outer mounting tube. At the same time, the inner telescopic tube applies pressure to the conical bellows, and the deformation of the conical bellows adapts to the movement of the inner telescopic tube in the outer mounting tube, preventing the inner telescopic tube from contacting the accidentally touched position, thereby minimizing the risk of infection caused by accidental punctures.

[0021] 3. According to the needs of perfusion, adjust the injection speed of the perfusion liquid, and use the handle bolt to drive the telescopic pressure plate to move in the guide groove, so that the telescopic pressure plate applies pressure to the side of the angle-adjustable tube. After the angle-adjustable tube is pressurized, the position of the angle-adjustable tube corresponding to the telescopic pressure plate deforms, thereby changing the inner diameter of the angle-adjustable tube and adjusting the injection speed of the perfusion liquid to meet different perfusion needs. For patients with critical conditions who need rapid perfusion of body fluids or drugs, speeding up the perfusion speed can quickly improve their physical condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the present invention.

[0023] Figure 2 It is a side view structural schematic diagram of the present invention.

[0024] Figure 3 It is a schematic diagram of the structure at the corresponding position of the spring of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the corrugated pipe at the corresponding position of the present invention.

[0026] Figure 5 It is a structural schematic diagram of the handle bolt at the corresponding position of the present invention.

[0027] Figure 6 It is a structural schematic diagram of the corresponding position of the positioning frame of the present invention.

[0028] Figure 7 It is a structural schematic diagram of the corresponding position of the central rotating plate of the present invention.

[0029] Figure 8 It is a structural schematic diagram of the corresponding position of the side fixing plate of the present invention.

[0030] Fig. 9 It is a structural schematic diagram of the corresponding position of the movable buckle of the present invention.

[0031] Fig.10 It is a schematic diagram of the structure at the corresponding position of the connecting plate of the present invention.

[0032] Fig.11 It is a schematic diagram of the structure at the corresponding position of the positioning handle of the present invention.

[0033] Fig.12 It is a schematic diagram of the structure at the corresponding position of the outer ferrule of the present invention.

[0034] In the figure: 1. outer mounting tube; 2. inner telescopic tube; 3. rectangular mounting frame; 4. conical bellows; 5. angle-adjustable tube; 6. fixing ring; 7. outer connecting strip; 8. inner mounting ring; 801. telescopic ball; 9. rotatable ring; 10. center rotating plate; 11. inner connecting plate; 12. movable buckle; 13. fixed sleeve; 14. outer clamping sleeve; 15. fixed sleeve seat; 16. connecting insert; 17. embedded sleeve; 18. side fixing plate; 19. positioning handle; 20. positioning box; 2001. guide slide; 21. telescopic pressure plate; 22. handle bolt; 23. threaded portion; 24. rotating sleeve; 25. spring; 26. auxiliary rotating block. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 12The present invention provides a technical solution: an adjustable perfusion needle and an operating method thereof, comprising an outer mounting tube 1, an inner telescopic tube 2 movably inserted in the outer mounting tube 1, the inner telescopic tube 2 being used for contacting the perfusion position, a cutout being provided at the bottom end of the inner telescopic tube 2 to ensure that the inner telescopic tube 2 can be inserted into the perfusion position, the outer mounting tube 1 being sleeved outside the inner telescopic tube 2, the outer mounting tube 1 and the inner telescopic tube 2 forming a sliding connection structure, a rectangular mounting frame 3 being fixedly installed on the top of the outer mounting tube 1, a fixed sleeve 15 being provided at the bottom of the rectangular mounting frame 3, the fixed sleeve 15 at this position being connected to the outer mounting tube 1 to realize a fixed connection between the outer mounting tube 1 and the rectangular mounting frame 3, a conical bellows 4 being provided in the outer mounting tube 1, and the bottom end of the conical bellows 4 and the top end of the inner telescopic tube 2 are aligned. The conical bellows 4 is conical in shape, which can adapt to the connection between the angle-adjustable tube 5 and the inner telescopic tube 2 of different thicknesses, and the conical bellows 4 has the ability to deform to adapt to the movement of the inner telescopic tube 2 in the outer mounting tube 1. An angle-adjustable tube 5 is arranged in the rectangular mounting frame 3. The angle-adjustable tube 5 consists of two parts. The center position of the angle-adjustable tube 5 is a softer part, and the two ends of the angle-adjustable tube 5 are harder parts, which ensure that the angle-adjustable tube 5 is away from the rotation of one end of the conical bellows 4. The swing angle of the angle-adjustable tube 5 is the same as the swing angle of the active buckle 12 on the inner mounting ring 8. The positions of the active buckle 12 and the fixed sleeve 13 correspond. When the active buckle 12 moves on the inner mounting ring 8, the fixed sleeve 13 also moves on the fixed ring 6. The angle is adjustable The bottom end of the tube 5 is connected to the top end of the conical bellows 4. A fixing frame consisting of a fixing ring 6 and an outer connecting strip 7 is arranged on both sides of the rectangular mounting frame 3. The fixing ring 6 is composed of a larger circular ring and a smaller circular ring. A gap is left between the two circular rings that constitute the fixing ring 6. The outer connecting strip 7 is composed of a circular ring located in the center and a plurality of connecting strips. The connecting strips that constitute the outer connecting strip 7 are used for connecting between the fixing rings 6. An inner mounting ring 8 is coaxially arranged at the center position of the outer side of the outer connecting strip 7. Four retractable balls 801 are distributed in a circular array on the inner mounting ring 8 with the center of the inner mounting ring 8 as the center of the array. An elastic structure, such as a spring or a spring sheet, is arranged on the back of the retractable ball 801. After the retractable ball 801 is compressed, the retractable ball 801 can be retracted into the inner mounting ring 8, and the fixing ring 6 rotates A rotatable ring 9 is connected, and the rotatable ring 9 is located between the two circular rings that constitute the fixed ring 6. A central rotating plate 10 is rotatably connected inside the inner mounting ring 8, and the central rotating plate 10 is located inside the inner mounting ring 8. The inner mounting ring 8 and the central rotating plate 10 form a rotating connection. An inner connecting plate 11 is provided between the rotatable ring 9 and the central rotating plate 10 for connection, and the inner connecting plate 11 is in contact with the inner side of the fixed ring 6. The rotatable ring 9, the central rotating plate 10 and the inner connecting plate 11 form a rotating structure, and the inner connecting plate 11 is located on the back of the fixed ring 6 and rotates. The central rotating plate 10 is located in the inner mounting ring 8 and rotates. The rotatable ring 9 is located in the fixed ring 6 and rotates. An active buckle 12 is fixedly installed on the central rotating plate 10, and the active buckle 12 is located on the inner mounting ring 8 and moves.The movable buckle 12 is movably engaged with the inner mounting ring 8, and a groove corresponding to the shape of the retractable ball 801 is opened on the side of the movable buckle 12 that fits the inner mounting ring 8, ensuring that the pop-up retractable ball 801 can be engaged with the movable buckle 12, and also ensuring that after the movable buckle 12 moves to a specified position on the inner mounting ring 8, the retractable ball 801 can be retracted into the inner mounting ring 8. A fixed sleeve 13 is provided between two adjacent rotatable rings 9. The fixed sleeve 13 is fixedly sleeved outside the top end of the angle adjustable tube 5. The fixed sleeve 13 applies pressure to the top end of the angle adjustable tube 5 to drive the angle adjustable tube 5 to move in the rectangular mounting frame 3. The top end of the angle adjustable tube 5 is fixedly installed with an outer sleeve 14 The top and both sides of the rectangular mounting frame 3 are provided with a fixed sleeve 15. When the top of the angle-adjustable tube 5 is adjusted, the angle-adjustable tube 5 can reach the position corresponding to the next connecting plug 16 every time it rotates ninety degrees, ensuring the connection between the outer ferrule 14 and the embedded sleeve 17 on the back of the connecting plug 16 at this position. The connecting plug 16 is movably installed in the fixed sleeve 15. Through the movement of the connecting plug 16 in the fixed sleeve 15, the embedded sleeve 17 on the connecting plug 16 and the outer ferrule 14 are docked to achieve the connection between the angle-adjustable tube 5 and the connecting plug 16. The inner end of the connecting plug 16 is fixedly installed with the embedded sleeve 17, and the embedded sleeve 17 and the outer ferrule 14 are movably installed together.

[0037] Side fixing plates 18 are provided on both sides of the bottom end of the angle-adjustable tube 5. The side fixing plates 18 are fixedly mounted on the bottom of the inner wall of the rectangular mounting frame 3. The side fixing plates 18 fix the bottom of the angle-adjustable tube 5, and the side fixing plates 18 close to the angle-adjustable tube 5 are adapted to the shape of the angle-adjustable tube 5 to ensure the fit between the side fixing plates 18 and the bottom end of the angle-adjustable tube 5, so as to ensure that when the upper end of the angle-adjustable tube 5 rotates, the lower end will not rotate with it.

[0038] A positioning handle 19 is fixedly mounted on the outer wall of the connecting insert 16 . The positioning handle 19 assists the rotation of the connecting insert 16 . The positioning handle 19 also has the function of limiting the movement of the connecting insert 16 .

[0039] A positioning frame 20 is arranged inside the outer mounting tube 1, and the positioning frame 20 is located outside the angle-adjustable tube 5. The positioning frame 20 is a rectangular frame, and the positioning frame 20 is located outside the angle-adjustable tube 5. A guide slot 2001 is provided on the positioning frame 20, and a telescopic pressing plate 21 is slidably connected inside the guide slot 2001. An arc-shaped telescopic pressing plate 21 is arranged inside the guide slot 2001. The telescopic pressing plate 21 contacts the angle-adjustable tube 5, and the telescopic pressing plate 21 applies pressure to the side of the angle-adjustable tube 5. The inner diameter of the angle-adjustable tube 5 is changed by the pressure applied by the telescopic pressing plate 21 to the angle-adjustable tube 5, thereby changing the single The amount of liquid flowing from the angle adjustable tube 5 during the positioning time, the positioning frame 20 is threadedly connected with a handle bolt 22, the handle bolt 22 consists of two parts, one part is a rotating part with convex patterns, and the other part is a rotating part with threads, the threaded part is engaged with the positioning frame 20, and one end of the handle bolt 22 located in the positioning frame 20 is rotatably connected to the telescopic pressure plate 21, and the telescopic pressure plate 21 is pressed by the rotation of the handle bolt 22, so that the telescopic pressure plate 21 moves in the guide slot 2001, and the telescopic pressure plate 21 applies pressure to the outer wall of the angle adjustable tube 5, thereby changing the inner diameter of the angle adjustable tube 5.

[0040] The telescopic pressing plate 21 is adapted to the shape of the angle-adjustable tube 5 on one side thereof, and the telescopic pressing plate 21 is slidably connected to the guide groove 2001 to ensure the movement stability of the telescopic pressing plate 21 and to achieve a better pressure effect of the telescopic pressing plate 21.

[0041] There is a gap between the positioning handle 19 and the fixed sleeve 15, and the distance between the positioning handle 19 and the fixed sleeve 15 is greater than the distance between the outer sleeve 14 and the embedded sleeve 17, ensuring that the connecting tube 16 moves a distance so that the embedded sleeve 17 and the outer sleeve 14 can contact and connect.

[0042] A threaded portion 23 is provided at a position near the top of the outer wall of the inner telescopic tube 2, and a rotatable sleeve 24 is connected to the outer thread of the threaded portion 23. The rotatable sleeve 24 moves outside the threaded portion 23 on the inner telescopic tube 2, changing the distance between the top of the rotatable sleeve 24 and the bottom of the outer mounting tube 1, thereby applying pressure to the spring 25, changing the elastic coefficient of the spring 25, thereby changing the telescopic effect and telescopic difficulty of the inner telescopic tube 2 in the outer mounting tube 1. A spring 25 is provided between the rotatable sleeve 24 and the outer mounting tube 1, and the spring 25 is movably sleeved outside the inner telescopic tube 2.

[0043] A plurality of auxiliary rotating blocks 26 are distributed in a circular array at the bottom of the rotating sleeve 24 with the central axis of the rotating sleeve 24 as the center. The auxiliary rotating blocks 26 assist in rotating the rotating sleeve 24 and improve the convenience of rotating the rotating sleeve 24.

[0044] Working principle:

[0045] The first step: adjust the telescopic distance of the inner telescopic tube 2 as needed, and use the auxiliary rotating block 26 to assist in rotating the rotating sleeve 24, so that the rotating sleeve 24 moves on the inner telescopic tube 2, and the distance between the rotating sleeve 24 and the outer mounting tube 1 is changed. The rotating sleeve 24 applies pressure to the spring 25 to drive the spring 25 to deform. When holding the outer mounting tube 1 part, the bottom end of the inner telescopic tube 2 contacts the skin, and the inner telescopic tube 2 moves upward under pressure, and the inner telescopic tube 2 retracts into the outer mounting tube 1. At the same time, the inner telescopic tube 2 applies pressure to the conical bellows 4, and the conical bellows 4 deforms to adapt to the movement of the inner telescopic tube 2 in the outer mounting tube 1, preventing the inner telescopic tube 2 from contacting the mistaken touch position, causing the inner telescopic tube 2 to be inserted. When holding the inner telescopic tube 2 part, the inner telescopic tube 2 contacts the injection position, and the insertion operation of the inner telescopic tube 2 is realized.

[0046] Step 2: According to the needs of perfusion, adjust the injection speed of the perfusion liquid, rotate the handle bolt 22, and let the handle bolt 22 move in the outer mounting tube 1. At the same time, the handle bolt 22 also moves in the inner thread of the positioning frame 20. During the movement of the handle bolt 22 thread, the handle bolt 22 drives the telescopic pressure plate 21 to move in the guide groove 2001, so that the telescopic pressure plate 21 applies pressure to the side of the angle adjustable tube 5. After the angle adjustable tube 5 is pressurized, the angle adjustable tube 5 is deformed corresponding to the position of the telescopic pressure plate 21, thereby changing the inner diameter of the angle adjustable tube 5 and adjusting the injection speed of the perfusion liquid to meet different perfusion needs.

[0047] Step 3: According to the installation requirements, adjust the position of the outer ferrule 14 on the angle-adjustable tube 5 in the rectangular mounting frame 3, make the outer ferrule 14 contact the embedded sleeve 17 at the corresponding position, and connect the connecting cannula 16 to the instrument at the corresponding position, rotate the active buckle 12, and when the active buckle 12 rotates on the inner mounting ring 8, the active buckle 12 applies pressure to the retractable ball 801 when it moves, and the retractable ball 801 retracts into the inner mounting ring 8. At the same time, when the active buckle 12 moves to the top of the retractable ball 801, the retractable ball 801 pops out and is stuck in the active buckle 12, so as to realize the positioning and limiting of the movement of the active buckle 12. When the active buckle 12 moves, it drives the rotatable ring 9 and the center rotating plate 1 0 and the inner connecting plate 11 move, the rotatable ring 9 moves in the fixed ring 6, thereby driving the fixed sleeve 13 to move, and the fixed sleeve 13 applies pressure to the top of the angle-adjustable tube 5, thereby driving the angle-adjustable tube 5 to move. The angle-adjustable tube 5 corresponds to the connecting insert 16 at the corresponding position, and the connecting insert 16 at the corresponding position is moved to allow the embedded sleeve 17 to be engaged in the outer sleeve 14. At the same time, the positioning handle 19 can also play a positioning role to assist the docking of the outer sleeve 14 and the inner embedded sleeve 17. After the angle-adjustable tube 5 and the connecting insert 16 at the corresponding position are docked, the perfusion liquid enters from the connecting insert 16 and moves along the angle-adjustable tube 5, and then flows through the inner telescopic tube 2 to enter the part that needs perfusion.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable perfusion needle, characterized in that: The invention comprises an outer mounting tube (1), an inner telescopic tube (2) being movably inserted in the outer mounting tube (1), a rectangular mounting frame (3) being fixedly mounted on the top of the outer mounting tube (1), a conical corrugated tube (4) being arranged in the outer mounting tube (1), and the bottom end of the conical corrugated tube (4) being connected to the top end of the inner telescopic tube (2), an angle-adjustable tube (5) being arranged in the rectangular mounting frame (3), the bottom end of the angle-adjustable tube (5) being connected to the top end of the conical corrugated tube (4), and the rectangular A fixing frame consisting of a fixing ring (6) and an outer connecting strip (7) is arranged on both sides of the mounting frame (3); an inner mounting ring (8) is coaxially arranged at the center position of the outer side of the outer connecting strip (7); four retractable balls (801) are distributed in a circular array on the inner mounting ring (8) with the center of the inner mounting ring (8) as the center of the array; a rotatable ring (9) is rotatably connected to the fixing ring (6); a central rotating plate (10) is rotatably connected inside the inner mounting ring (8); the rotatable ring (9) and An inner connecting plate (11) is provided between the central rotating plates (10) for connection, and the inner connecting plate (11) is in contact with the inner side of the fixed ring (6). A movable buckle (12) is fixedly mounted on the central rotating plate (10), and the movable buckle (12) is movably engaged with the inner mounting ring (8). A groove corresponding to the shape of a retractable ball (801) is provided on the side where the movable buckle (12) and the inner mounting ring (8) are in contact. A fixed sleeve plate (801) is provided between two adjacent rotatable rings (9). 13), the fixed sleeve (13) is fixedly mounted outside the top end of the angle-adjustable tube (5), the top end of the angle-adjustable tube (5) is fixedly mounted with an outer sleeve (14), the top and both sides of the rectangular mounting frame (3) are provided with a fixed sleeve seat (15), a connecting insert (16) is movably mounted in the fixed sleeve seat (15), an inner end of the connecting insert (16) is fixedly mounted with an embedded sleeve (17), and the embedded sleeve (17) and the outer sleeve (14) are movably mounted together.

2. An adjustable perfusion needle according to claim 1, characterized in that: Side fixing plates (18) are provided on both sides of the bottom end of the angle-adjustable tube (5), and the side fixing plates (18) are fixedly mounted on the bottom of the inner wall of the rectangular mounting frame (3).

3. An adjustable perfusion needle according to claim 2, characterized in that: A positioning handle (19) is fixedly mounted on the outer wall of the connecting insert (16).

4. An adjustable perfusion needle according to claim 3, characterized in that: A positioning frame (20) is arranged inside the outer mounting tube (1), and the positioning frame (20) is located outside the angle-adjustable tube (5). A guide slot (2001) is provided on the positioning frame (20), and a telescopic pressing plate (21) is slidably connected inside the guide slot (2001). A handle bolt (22) is threadedly connected to the positioning frame (20), and one end of the handle bolt (22) located inside the positioning frame (20) is rotatably connected to the telescopic pressing plate (21).

5. An adjustable perfusion needle according to claim 4, characterized in that: The telescopic pressing plate (21) is adapted to the shape of the angle-adjustable tube (5) on one side thereof close to the angle-adjustable tube (5), and the telescopic pressing plate (21) is slidably connected to the guide slide groove (2001).

6. An adjustable perfusion needle according to claim 5, characterized in that: A gap is left between the positioning handle (19) and the fixed sleeve seat (15), and the distance between the positioning handle (19) and the fixed sleeve seat (15) is greater than the distance between the outer clamping sleeve (14) and the inner embedded sleeve (17).

7. An adjustable perfusion needle according to claim 6, characterized in that: The swing angle of the angle-adjustable tube (5) is the same as the swing angle of the movable buckle (12) on the inner mounting ring (8).

8. An adjustable perfusion needle according to claim 7, characterized in that: A threaded portion (23) is provided at a position near the top of the outer wall of the inner telescopic tube (2); the threaded portion (23) is externally threadedly connected to a rotatable sleeve (24); a spring (25) is provided between the rotatable sleeve (24) and the outer mounting tube (1); and the spring (25) is movably sleeved outside the inner telescopic tube (2).

9. An adjustable perfusion needle according to claim 8, characterized in that: A plurality of auxiliary rotating blocks (26) are distributed in a ring array at the bottom of the rotating sleeve (24) with the central axis of the rotating sleeve (24) as the center.

Images