Anti-falling puncture outfit

Abstract

The invention discloses an anti-falling puncture outfit, and relates to the field of medical instruments, the anti-falling puncture outfit comprises an elastic part arranged on the periphery of a puncture outfit body, one end, far away from the puncture outfit body, of the elastic part and one side, facing the axis of the puncture outfit body, of the elastic part are provided with a protruding part, and one side, facing the puncture part of the puncture outfit body, of the protruding part is provided with an inclined surface; a containing area is formed on the side, facing the puncture outfit body, of the protruding part, the height of the containing area is matched with the distance between a bottle opening of an infusion bottle and an upper flange of the infusion bottle, a supporting plate with the adjustable position is arranged on the puncture outfit body, and the side, facing the axis of the puncture outfit body, of the supporting plate extends into the containing area. The height of the containing area and the position, relative to the elastic part, of the supporting plate change synchronously. Through the elastic part on the periphery of the puncture outfit body, the puncture outfit body can have an anti-falling function, and under the cooperation of the protruding part, the supporting plate and the containing area, the height of the containing area is flexibly adjusted so as to adapt to infusion bottles of multiple specifications.

Description

Technical Field

[0001] This invention relates to the field of medical devices, and more particularly to a puncture device that prevents detachment. Background Technology

[0002] The infusion bottle puncture device is a key instrument used in medical infusion to connect the infusion bottle to the infusion tubing. It is usually made of medical polymer materials and has sterile and pyrogen-free properties. Its core structure includes a puncture needle, a protective sleeve, an air filter, and a connection interface: the puncture needle has a blunt tip design and can safely puncture the rubber stopper of the infusion bottle; the protective sleeve ensures sterility before use; the air filter maintains the air pressure balance inside the bottle; and the connection interface is tightly connected to the infusion tubing.

[0003] Chinese patent application No. 202322310742.1, filed on August 23, 2023, discloses an anti-dislodgement structure for an infusion set, comprising a right-turning ring and a left-turning ring. Semi-circular holes are formed on opposite sides of the right and left-turning rings, forming clamping holes for clamping the bottle stopper puncture device after contact. A groove is formed on the front side of the left-turning ring. The right and left-turning rings are movably connected by a connecting component, and a rotating handle is installed on the front side of both rings. Clamping structures are installed on the left side of the right-turning ring and the right side of the left-turning ring to achieve self-clamping of the infusion bottle and prevent the bottle stopper puncture device from falling off. This anti-dislodgement structure solves the problem of the complexity of existing anti-dislodgement structures for bottle stopper puncture devices.

[0004] In the aforementioned anti-dislodgement structure for infusion sets, although the puncture device can be prevented from dislodging after being connected to the infusion bottle through the anti-dislodgement structure, there are still certain defects in actual use. For example, the diameter difference of the bottle mouth of different sizes of infusion bottles such as 50ml, 100ml, and 250ml can reach 5-15mm, and the height difference of the neck is about 10-30mm1. The fixed-length anti-dislodgement structure in the aforementioned anti-dislodgement structure, namely the hanging rod, is difficult to adapt to different sizes of infusion bottles at the same time. If the matching infusion bottle is too large and exceeds the range of the hanging rod, the puncture device cannot be used normally. If the infusion bottle is too small, the hanging rod cannot hold the puncture device and the infusion bottle tightly together, and there is a gap between the two. At this time, the hanging rod cannot effectively play the anti-dislodgement function, and there is still a risk of loosening between the puncture device and the infusion bottle.

[0005] Therefore, an anti-dislodgement puncture device is proposed to solve the problem that the above-mentioned fixed-length anti-dislodgement structure cannot be adapted to infusion bottles of different sizes. Summary of the Invention

[0006] The purpose of this invention is to provide an anti-dislodgement puncture device that solves the problem that fixed-length anti-dislodgement structures cannot be adapted to infusion bottles of different sizes.

[0007] To achieve this objective, the present invention adopts the following technical solution: An anti-dislodgement puncture device includes an elastic portion disposed on the outer periphery of the puncture device body. A protrusion is formed on the side of the elastic portion away from the puncture device body and facing the axis of the puncture device body. An inclined surface is formed on the side of the protrusion facing the puncture part of the puncture device body. A receiving area is formed on the side of the protrusion facing the puncture device body. The height of the receiving area is adapted to the distance between the mouth of the infusion bottle and the upper flange of the infusion bottle. An adjustable support plate is disposed on the puncture device body. The side of the support plate facing the axis of the puncture device body extends into the receiving area. The height of the receiving area changes synchronously with the position of the support plate relative to the elastic portion.

[0008] Preferably, a connecting part is provided on the outer periphery of the puncture device body, the elastic part is provided on the connecting part along the direction of the infusion bottle, and the elastic part is provided with an assembly port along the direction of the infusion bottle, the support plate is provided in the assembly port, and a plurality of grooves are provided at equal intervals along the direction of the infusion bottle on the inner wall of the assembly port, and the support plate is engaged in the grooves.

[0009] Preferably, a movable groove is provided on the inner wall of the assembly port along the direction of the infusion bottle, and the movable groove is connected to the groove. A connecting rod is slidably connected in the movable groove. The support plate is sleeved on the connecting rod, and there are two support plates. A first spring is connected between the two support plates, and the first spring is movably sleeved on the outside of the connecting rod. The side of the support plate away from the first spring is engaged in the groove.

[0010] Preferably, one of the support plates has a reinforcing rod on the side facing the other support plate, and the other support plate has a through hole corresponding to the reinforcing rod, with the reinforcing rod passing through the through hole.

[0011] Preferably, a tube body is provided on the elastic part corresponding to the protrusion, a connector is provided inside the tube body, a guide rod is inserted into the connector, one end of the guide rod extends to the outside of the tube body towards the infusion bottle, and a rubber sleeve is provided on the outer periphery of the guide rod near that end. The horizontal height of the rubber sleeve is higher than the horizontal height of the puncture part of the puncture device body. A connecting plate is provided at the other end of the guide rod, and a second spring is provided between the connecting plate and the connector. The puncture device body moves towards the infusion bottle so that the rubber sleeve abuts against the curved surface at the mouth of the infusion bottle, and the guide rod moves away from the infusion bottle.

[0012] Preferably, a mounting portion is formed on the side of the elastic part away from the axis of the puncture device body, and a rotating shaft is provided on the tube body. The rotating shaft is rotatably connected in the mounting portion, and the tube body makes a circular motion about the rotating shaft as the axis.

[0013] Preferably, the mounting part has two mounting areas on one side of the pipe body, and a positioning area is formed between the two mounting areas. The rotating shaft is rotatably connected to the positioning area. A retractable positioning block is provided at the part of the mounting area near the positioning area. The pipe body is located between the two positioning blocks, and the rotation of the pipe body causes the positioning blocks to move towards the mounting part.

[0014] Preferably, the installation area is provided with an assembly groove, the positioning block is disposed in the assembly groove, and the positioning block is connected to the assembly groove by a third spring. The side of the positioning block away from the third spring extends to the outside of the assembly groove, and this side of the positioning block is provided as an arc surface, which abuts against the tube body.

[0015] Preferably, the connector includes a sphere and several support portions, which are arranged in a ring array on the inner wall of the tube. The sphere is rolled between the support portions, and the side of the support portion facing the sphere is set as an arc surface. The guide rod is inserted into the sphere. The tube is provided with an annular plate coaxial with the connecting plate in the direction away from the infusion bottle. The outer diameter of the connecting plate is adapted to the inner diameter of the annular plate. The guide rod moves in the direction away from the infusion bottle so that the connecting plate passes through the annular plate.

[0016] Preferably, the annular plate is provided with a plurality of elastic plates, the vertical projection of the connecting plate falls on the elastic plates, and a fluorescent layer is provided on the outer periphery of the connecting plate; the connecting plate passes through the annular plate to move the fluorescent layer from inside the tube to outside the tube, and squeezes the elastic plates to deform them.

[0017] Compared with the prior art, the present invention has the following beneficial effects: This invention provides an anti-dislodgement puncture device. Through an elastic portion located on the outer periphery of the puncture device body, a flexible contact base is provided during the connection between the puncture device body and the infusion bottle, thus adapting to minor changes in the infusion bottle's dimensions. Specifically, the cooperation between the protrusion, the support plate, and the receiving area forms an axial limit on the infusion bottle. Simultaneously, under the action of the support plate, the height of the receiving area can be flexibly adjusted to accommodate the height difference between the bottle mouth and the flange, thereby adapting to various infusion bottle sizes. Furthermore, the positional adjustment of the support plate relative to the elastic portion not only achieves dynamic matching of the receiving area space but also provides stable positioning support, further preventing the infusion bottle from shaking or dislodging during use. This, in turn, improves the overall anti-dislodgement performance of the puncture device while ensuring connection stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is another overall structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the internal structure of the puncture device body in this invention; Figure 4 This is a schematic diagram of the connection structure between the elastic part and the protrusion in this invention; Figure 5 This is a schematic diagram of the disassembled structure of the support plate and connecting rod in this invention; Figure 6 This is a schematic diagram showing the disassembled structure of the tube body and the mounting part in this invention; Figure 7 This is a schematic diagram of the internal structure of the tube in this invention; Figure 8 This is a schematic diagram of the disassembled structure of the sphere and guide rod in this invention; Figure 9 This is a schematic diagram of the distribution structure of the installation area and the positioning area in this invention; Figure 10 This is a schematic diagram of the connection structure between the annular plate and the elastic plate in this invention; Figure 11 This is a cross-sectional view of the mounting section in this invention.

[0021] Illustrations: 1. Puncture device body; 2. Elastic part; 21. Protrusion; 22. Inclined surface; 23. Assembly port; 24. Groove; 25. Moving groove; 3. Mounting part; 31. Rotating shaft; 32. Mounting area; 321. Assembly groove; 322. Third spring; 33. Positioning area; 34. Positioning block; 341. Arc surface; 4. Tube body; 41. Connector; 411. Sphere; 412. Support part; 412a. Arc surface; 413. Annular plate; 414. Elastic plate; 415. Fluorescent layer; 42. Guide rod; 43. Rubber sleeve; 44. Connecting plate; 45. Second spring; 5. Connecting part; 6. Pressing part; 7. Support plate; 71. Connecting rod; 72. First spring; 73. Reinforcing rod; 74. Perforation; 8. Receiving area. Detailed Implementation

[0022] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0024] Example 1: Please see Figures 1-11 In this embodiment, an anti-dislodgement puncture device includes an elastic part 2 disposed on the outer periphery of the puncture device body 1. A protrusion 21 is formed on the side of the elastic part 2 away from the puncture device body 1 and facing the axis of the puncture device body 1. An inclined surface 22 is formed on the side of the protrusion 21 facing the puncture part of the puncture device body 1. A receiving area 8 is formed on the side of the protrusion 21 facing the puncture device body 1. The height of the receiving area 8 is adapted to the distance between the mouth of the infusion bottle and the upper flange of the infusion bottle. An adjustable support plate 7 is disposed on the puncture device body 1. The side of the support plate 7 facing the axis of the puncture device body 1 extends into the receiving area 8. The height of the receiving area 8 changes synchronously with the position of the support plate 7 relative to the elastic part 2.

[0025] In application, when connecting the puncture device body 1 to the infusion bottle, the puncture part on the puncture device body 1 penetrates the rubber stopper on the infusion bottle, and the puncture device body 1 is pushed towards the infusion bottle. As the puncture device body 1 moves, the puncture device body 1 will drive the protrusion 21 to move towards the infusion bottle through the elastic part 2. When the protrusion 21 moves to the point where the inclined surface 22 contacts the flange on the infusion bottle, the flange on the infusion bottle will compress the protrusion 21 through the inclined surface 22, and the elastic part 2 will bend and deform through the protrusion 21. When the puncture device body 1 moves and the flange of the infusion bottle moves out of the inclined surface 22, the flange will enter the receiving area 8. At this time, the position of the support plate 7 can be adjusted so that the height of the receiving area 8 can be adjusted so that the height of the receiving area 8 can adapt to the distance between the flange on the infusion bottle and the bottle mouth, thereby realizing that the elastic part 2 of fixed length can adapt to infusion bottles of different specifications.

[0026] It should be noted that by adjusting the position of the support plate 7 on the elastic part 2, the height of the receiving area 8 is adapted to the distance between the infusion bottle mouth and the flange, so that the puncture device can be tightly connected to the infusion bottle. The cooperation between the protrusion 21 and the support plate 7 restricts the puncture device body 1 from the infusion bottle, so as to avoid the failure of the anti-dislodgement when the puncture device body 1 is used on infusion bottles of different sizes.

[0027] It should also be noted that the elastic force of the elastic part 2 can ensure that it is effectively reset under the action of the protrusion 21 and the flange, and when the elastic part 2 is reset, the elastic part 2 can abut against the flange.

[0028] It is known that after the puncture part of the puncture device body 1 penetrates the rubber stopper, the protrusion 21 abuts against the flange of the infusion bottle, and the support plate 7 abuts against the bottle mouth of the infusion bottle and abuts against the rubber stopper. Through the locking and limiting between the protrusion 21 and the support plate 7 and the bottle mouth and flange of the infusion bottle, the puncture device body 1 can be restricted to the infusion bottle to prevent the puncture device body 1 from detaching due to external force during use.

[0029] Furthermore, a connecting part 5 is provided on the outer periphery of the puncture device body 1, and the elastic part 2 is provided on the connecting part 5 along the direction of the infusion bottle. The elastic part 2 is provided with an assembly port 23 along the direction of the infusion bottle. The support plate 7 is provided in the assembly port 23. A plurality of grooves 24 are provided at equal intervals along the direction of the infusion bottle on the inner wall of the assembly port 23, and the support plate 7 is engaged in the grooves 24.

[0030] In application, when it is necessary to adjust the height of the receiving area 8 by adjusting the position of the support plate 7, the position of the support plate 7 in the assembly port 23 can be adjusted, and the support plate 7 can be engaged with different grooves 24. By engaging the support plate 7 with different grooves 24, the position of the support plate 7 can be adjusted.

[0031] It should be noted that when connecting the puncture device body 1 to the infusion bottle, the position of the support plate 7 is adjusted in advance, and then the position of the support plate 7 is finely adjusted after the puncture device body 1 is connected to the infusion bottle. This makes the support plate 7 and the protrusion 21 more stable and effective in restricting the infusion bottle and the puncture device body 1, so that the puncture device body 1 can be restricted in the most appropriate position when connected to the infusion bottle, ensuring the connection effect while ensuring the anti-dislodgement effect.

[0032] In a specific embodiment, such as Figures 1-2 As shown, a pressing part 6 is formed on the side of the elastic part 2 away from the protrusion 21. Specifically, by pressing the pressing part 6 towards the puncture device body 1, the side of the elastic part 2 close to the protrusion 21 and the protrusion 21 move away from the puncture device body 1, so that the protrusion 21 separates from the flange on the infusion bottle. After the protrusion 21 separates from the flange on the infusion bottle, the protrusion 21 and the support plate 7 no longer restrict the infusion bottle and the puncture device body 1, and the puncture device body 1 and the infusion bottle can be separated. After the liquid in the infusion bottle is emptied, the puncture device body 1 is separated from the infusion bottle by pressing the pressing part 6, which facilitates the connection of the puncture device body 1 with other infusion bottles for subsequent infusion work. Furthermore, separating the puncture device body 1 from the infusion bottle by pressing the pressing part 6 also improves the efficiency of the puncture device body 1 when separating from the infusion bottle.

[0033] Furthermore, such as Figures 3-4 As shown, a movable groove 25 is provided on the inner wall of the assembly port 23 along the direction of the infusion bottle, and the movable groove 25 is connected to the groove 24. A connecting rod 71 is slidably connected in the movable groove 25. The support plate 7 is sleeved on the connecting rod 71, and there are two support plates 7. A first spring 72 is connected between the two support plates 7, and the first spring 72 is movably sleeved on the outside of the connecting rod 71. The side of the support plate 7 away from the first spring 72 is engaged in the groove 24.

[0034] In application, when the position of the support plate 7 needs to be adjusted, the two support plates 7 are squeezed to move relative to each other, allowing the support plate 7 to move out of the current groove 24. After the support plate 7 is squeezed, it will move on the connecting rod 71 and simultaneously squeeze the first spring 72, causing the first spring 72 to contract. After the support plate 7 separates from the current groove 24, it will drive the connecting rod 71 to move in the moving groove 25. As the connecting rod 71 moves in the moving groove 25, the position of the support plate 7 is also adjusted. At this time, the movement of the connecting rod 71 can move the support plate 7 to the appropriate position and align the support plate 7 with the groove 24 at that location. After alignment, the support plate 7 is released, and the first spring 72 is no longer under force. The elastic force generated by the deformation and rebound of the first spring 72 causes the support plate 7 to move back into the groove 24. When the support plate 7 is connected to the groove 24 at the appropriate position, the position of the support plate 7 is locked and adjusted, and the height of the receiving area 8 is also adjusted with the movement of the support plate 7.

[0035] It should be noted that the position of the support plate 7 can be adjusted by moving the support plate 7 within the assembly port 23 and connecting the support plate 7 with the groove 24 at the appropriate position. Adjusting the position of the support plate 7 in the above manner effectively improves the effect of position adjustment, and the adjustment process is also convenient and quick, thus improving work efficiency.

[0036] It is known that, in a working state, such as Figure 1 As shown, the support plate 7 and the protrusion 21 are horizontally arranged. When the support plate 7 is switched to the working state, as... Figure 2 As shown, the support plate 7 is completely housed within the assembly port 23, and the support plate 7 abuts against the assembly port 23. When the support plate 7 is not in the working state, the complete housing of the support plate 7 can greatly reduce the volume of the puncture device during transportation or storage. When not in use, the support plate 7 is hidden inside the elastic part 2 to avoid deformation caused by external collisions, which is especially suitable for compact medical device storage environments.

[0037] In a specific embodiment, such as Figure 5 As shown, in this embodiment, one of the support plates 7 is provided with a reinforcing rod 73 on the side facing the other support plate 7, and a through hole 74 is provided on the other support plate 7 corresponding to the reinforcing rod 73, and the reinforcing rod 73 passes through the through hole 74.

[0038] It should be noted that the reinforcing rod 73 and the perforation 74 are located on the support plate 7 away from the connecting rod 71. When the support plate 7 works with the protrusion 21 to restrict the infusion bottle, the cooperation of the reinforcing rod 73 and the perforation 74, along with the engagement of the support plate 7 and the groove 24, can increase the effectiveness of the support plate 7 in restricting the infusion bottle and further improve the anti-dislodgement effect.

[0039] Example 2: The basic content is the same as in Example 1, except that: Please see Figures 6-11 In this embodiment, a tube body 4 is provided on the elastic part 2 corresponding to the protrusion 21. A connector 41 is provided inside the tube body 4. A guide rod 42 is inserted into the connector 41. One end of the guide rod 42 extends toward the infusion bottle to the outside of the tube body 4. A rubber sleeve 43 is provided on the outer periphery of the guide rod 42 near this end. The horizontal height of the rubber sleeve 43 is higher than the horizontal height of the puncture part of the puncture device body 1. A connecting plate 44 is provided at the other end of the guide rod 42. A second spring 45 is provided between the connecting plate 44 and the connector 41. The puncture device body 1 moves toward the infusion bottle so that the rubber sleeve 43 abuts against the curved surface at the mouth of the infusion bottle, and the guide rod 42 moves away from the infusion bottle.

[0040] It should be noted that when connecting the puncture device body 1 to the infusion bottle, if the puncture part of the puncture device body 1 is tilted when puncturing the rubber stopper on the infusion bottle, the cutting force will be decomposed into vertical and horizontal components because the puncture part of the puncture device body 1 is not perpendicular to the rubber stopper. The horizontal shearing force will cause the rubber stopper to be torn laterally rather than completely cut, forming an irregular crack, which will lead to an increase in rubber debris. This will cause the rubber debris to fall into the medicine and cause particulate contamination. It should also be noted that there are two tubes 4 and two guide rods 42, and they are symmetrically distributed with the axis of the puncture device body 1 as the center.

[0041] Specifically, when connecting the puncture device to the infusion bottle at night or in other low-light conditions, the user cannot observe the puncture process due to poor lighting, which can easily lead to the puncture device penetrating at an angle. The guide rod 42 and rubber sleeve 43 are designed to guide the rubber sleeve 43 to contact the infusion bottle first when the puncture device body 1 is connected to the infusion bottle. After both rubber sleeves 43 are in contact with the infusion bottle, the guide rod 42 can guide the puncture device body 1, so that the puncture part of the puncture device body 1 can penetrate the rubber stopper vertically, thus avoiding the situation where the rubber debris increases due to the angled penetration.

[0042] In application, the movable puncture device body 1 is guided by the guide rod 42 to bring the rubber sleeve 43 into contact with the infusion bottle. After the rubber sleeve 43 contacts the infusion bottle, it can guide the continued movement of the puncture device body 1, allowing the puncture part of the puncture device body 1 to penetrate the rubber stopper vertically. After the puncture device body 1 continues to move, the puncture device body 1 will drive the tube body 4 to move, and through the tube body 4, the connector 41 will move along the direction of the infusion bottle on the guide rod 42. As the connector 41 moves, the connector 41 moves away from the connecting plate 44 and stretches the second spring 45. At the same time, the second spring 45 can also reset the guide rod 42 after the puncture device body 1 is separated from the infusion bottle, so as to facilitate subsequent guiding work.

[0043] It is understandable that, since the contact surface between the rubber sleeve 43 and the infusion bottle is an arc surface, setting the rubber sleeve 43 on the guide rod 42 can increase the friction when the guide rod 42 contacts the infusion bottle, thereby improving the guiding effect and enhancing the restriction effect on the movement trajectory of the puncture device body 1.

[0044] It should be emphasized that setting two guide rods 42 for guidance can not only improve the accuracy of guidance but also improve the stability of guidance. When guiding, the accuracy of guidance can be judged by observing that the rubber sleeves 43 on both guide rods 42 are in contact with the infusion bottle. Specifically, if only one rubber sleeve 43 is in contact with the infusion bottle during guidance, it indicates that the guidance is not accurate.

[0045] Furthermore, an installation part 3 is formed on the side of the elastic part 2 away from the axis of the puncture device body 1, and a rotating shaft 31 is provided on the tube body 4. The rotating shaft 31 is rotatably connected in the installation part 3, and the tube body 4 makes a circular motion about the rotating shaft 31 as the axis.

[0046] It is known that by making the tube body 4 rotatable, the guide rod 42 and the rubber sleeve 43 can be oriented away from the infusion bottle when not in use, which reduces the overall length of the guide rod 42 when it is set on the puncture device body 1, thereby avoiding the use of too much material when packaging the puncture device and reducing the cost of use.

[0047] Furthermore, please refer to Figures 9-10 The mounting part 3 has two mounting areas 32 on one side of the tube body 4, and a positioning area 33 is formed between the two mounting areas 32. The rotating shaft 31 is rotatably connected to the positioning area 33. A retractable positioning block 34 is provided at the part of the mounting area 32 near the positioning area 33. The tube body 4 is located between the two positioning blocks 34, and the rotation of the tube body 4 causes the positioning blocks 34 to move towards the mounting part 3.

[0048] It should be noted that when the guide rod 42 is in operation, the rubber sleeve 43 faces the infusion bottle, and when the guide rod 42 is not in operation, the rubber sleeve 43 faces away from the infusion bottle.

[0049] In application, when it is necessary to switch the guide rod 42 from the non-working state to the working state, rotate the tube body 4. The tube body 4 rotates around the pivot 31. When the tube body 4 rotates, it will press against the positioning block 34, causing the positioning block 34 to move towards the installation area 32. After rotating the tube body 4 to switch the guide rod 42 to the working state, the tube body 4 will no longer press against the positioning block 34, and the positioning block 34 will reset.

[0050] It is known that after the guide rod 42 is switched to the working state, the two positioning blocks 34, which are symmetrically distributed around the tube body 4, can restrict the tube body 4, thereby restricting the guide rod 42 so that the guide rod 42 can be vertically oriented towards the infusion bottle. This avoids the guide rod 42 from deviating during the subsequent guiding process, which would cause the guiding to fail and improve the effect of subsequent guiding.

[0051] Specifically, please refer to Figure 10 The installation area 32 is provided with an assembly groove 321. The positioning block 34 is disposed in the assembly groove 321 and is connected to the assembly groove 321 by a third spring 322. The side of the positioning block 34 away from the third spring 322 extends to the outside of the assembly groove 321, and this side of the positioning block 34 is provided as an arc surface 341. The arc surface 341 abuts against the tube body 4.

[0052] It should be noted that when the tube body 4 rotates, the tube body 4 contacts the positioning block 34. Since the contact surface between the positioning block 34 and the tube body 4 is an arc surface 341, after the tube body 4 contacts the positioning block 34, it will squeeze the positioning block 34, causing the positioning block 34 to move into the assembly groove 321. After the positioning block 34 moves, it will also squeeze the third spring 322, causing the third spring 322 to contract. When the tube body 4 rotates to switch the guide rod 42 to the working state, the tube body 4 only contacts the positioning block 34 and no longer squeezes the positioning block 34. The positioning block 34 can be reset by the elastic force of the third spring 322 when it resets.

[0053] It should be emphasized that when the guide rod 42 is guiding, the user can perform initial positioning when moving the puncture device body 1 towards the infusion bottle. The connection effect can be further improved by guiding the guide rod 42 and the rubber sleeve 43. Therefore, when the guide rod 42 is subjected to force and moves away from the infusion bottle, the slight deviation force generated by the curved surface of the infusion bottle cannot squeeze the positioning block 34. The positioning block 34 can effectively restrict the tube body 4 and the guide rod 42.

[0054] Example 3: The basic content is the same as in Example 2, except that: Please see Figures 6-11In this embodiment, the connector 41 includes a sphere 411 and several support portions 412. The support portions 412 are arranged in a ring array on the inner wall of the tube body 4. The sphere 411 is rolled between the support portions 412, and the side of the support portion 412 facing the sphere 411 is provided as an arc-shaped surface 412a. The guide rod 42 is inserted into the sphere 411. The tube body 4 is provided with an annular plate 413 coaxial with the connecting plate 44 in the direction away from the infusion bottle. The outer diameter of the connecting plate 44 is adapted to the inner diameter of the annular plate 413. The guide rod 42 moves in the direction away from the infusion bottle so that the connecting plate 44 passes through the annular plate 413.

[0055] It should be noted that after the guide rod 42 contacts the infusion bottle through the rubber sleeve 43, the puncture device body 1 will continue to move towards the infusion bottle. After the puncture device body 1 moves, the guide rod 42 will drive the connecting plate 44 to move towards the tube body 4. At this time, if the connecting plate 44 and the annular plate 413 are not on the same axis, after the guide rod 42 moves, the connecting plate 44 will contact the annular plate 413, and the annular plate 413 will block the connecting plate 44. After the connecting plate 44 cannot move, the feedback to the puncture device body 1 will also prevent the puncture device body 1 from continuing to move towards the infusion bottle. Therefore, after the guide rod 42 makes the rubber sleeve 43 contact the infusion bottle, it is necessary to make a fine adjustment to make the connecting plate 44 and the annular plate 413 on the same axis.

[0056] Specifically, when the annular plate 413 blocks the connecting plate 44, the guide rod 42 can be adjusted to drive the ball 411 to rotate between the support plates 7. When the position of the connecting plate 44 needs to be adjusted, the ball 411 can be rotated by the guide rod 42, so that the connecting plate 44 and the annular plate 413 are coaxial. After the connecting plate 44 and the annular plate 413 are coaxial, the annular plate 413 no longer blocks the connecting plate 44, and the puncture device body 1 can continue to move to allow the guide rod 42 to move.

[0057] It is known that after the annular plate 413 blocks the connecting plate 44, since the guide rod 42 and the rubber sleeve 43 have already come into contact with the infusion bottle, by finely adjusting the puncture device body 1, the guide rod 42 can drive the ball 411 to rotate between the support parts 412, so that the connecting plate 44 can be coaxial with the annular plate 413, so that the connecting plate 44 and the guide rod 42 can pass through the annular plate 413; in addition, the arc-shaped surface 412a on the support part 412 can be adapted to the outer peripheral surface of the ball 411, and the support part 412 can also restrict the ball 411 inside the tube body 4 while ensuring that the ball 411 rotates stably.

[0058] It is understandable that the connecting plate 44 can only pass through the annular plate 413 when the infusion bottle, guide rod 42 and puncture device body 1 are all correctly distributed, that is, when the infusion bottle and guide rod 42 are horizontally distributed, the guide rod 42 and puncture device body 1 are horizontally distributed, and the infusion bottle and puncture device body 1 are coaxially distributed. If any of these parts are incorrectly distributed, the annular plate 413 will block the connecting plate 44.

[0059] It should be emphasized that the cooperation between the annular plate 413 and the connecting plate 44 can provide prompts to the user during guidance. When the annular plate 413 blocks the connecting plate 44, the user can promptly detect the guidance error, thereby further improving the guidance effect.

[0060] Furthermore, such as Figure 11 As shown, a plurality of elastic plates 414 are provided inside the annular plate 413, and the vertical projection of the connecting plate 44 falls on the elastic plate 414. A fluorescent layer 415 is provided on the outer periphery of the connecting plate 44. The connecting plate 44 passes through the annular plate 413, causing the fluorescent layer 415 to move from inside the tube 4 to outside the tube 4, and compresses the elastic plate 414 to deform it.

[0061] It should be noted that when connecting the puncture device body 1 to the infusion bottle in low-light conditions such as at night, after the puncture device body 1 is connected to the infusion bottle, the connecting plate 44 passes through the annular plate 413 and moves to the outside of the tube body 4. The fluorescent layer 415 on the connecting plate 44 can provide a prompt to the user in low-light conditions, indicating that the puncture device body 1 has been successfully connected to the infusion bottle. At the same time, when the connecting plate 44 passes through the annular plate 413, the connecting plate 44 will also squeeze the elastic plate 414, causing the elastic plate 414 to deform. The deformed elastic plate 414 vibrates and produces sound, which can also provide an indication, allowing the user to know that the connection between the puncture device body 1 and the infusion bottle has been completed in low-light conditions.

[0062] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An anti-dislodgement puncture device, characterized in that, The device includes an elastic part (2) disposed on the outer periphery of the puncture device body (1). A protrusion (21) is formed on the side of the elastic part (2) away from the puncture device body (1) and facing the axis of the puncture device body (1). A slope (22) is formed on the side of the protrusion (21) facing the puncture part of the puncture device body (1). A receiving area (8) is formed on the side of the protrusion (21) facing the puncture device body (1). The height of the receiving area (8) is adapted to the distance between the mouth of the infusion bottle and the upper flange of the infusion bottle. An adjustable support plate (7) is provided on the puncture device body (1). The support plate (7) extends into the receiving area (8) on the side facing the axis of the puncture device body (1). The height of the receiving area (8) changes synchronously with the position of the support plate (7) relative to the elastic part (2).

2. The anti-dislodgement puncture device according to claim 1, characterized in that, A connecting part (5) is provided on the outer periphery of the puncture device body (1). The elastic part (2) is provided on the connecting part (5) along the direction towards the infusion bottle, and the elastic part (2) is provided with an assembly port (23) along the direction towards the infusion bottle. The support plate (7) is provided in the assembly port (23). Several grooves (24) are provided at equal intervals along the direction of the infusion bottle on the inner wall of the assembly port (23), and the support plate (7) is engaged in the grooves (24).

3. The anti-dislodgement puncture device according to claim 2, characterized in that, The inner wall of the assembly port (23) is provided with a moving groove (25) along the direction of the infusion bottle, and the moving groove (25) is connected to the groove (24). A connecting rod (71) is slidably connected in the moving groove (25). The support plate (7) is sleeved on the connecting rod (71), and there are two support plates (7). A first spring (72) is connected between the two support plates (7), and the first spring (72) is movably sleeved on the outside of the connecting rod (71). The side of the support plate (7) away from the first spring (72) is engaged in the groove (24).

4. The anti-dislodgement puncture device according to claim 1, characterized in that, One of the support plates (7) has a reinforcing rod (73) on the side facing the other support plate (7), and the other support plate (7) has a through hole (74) corresponding to the reinforcing rod (73), and the reinforcing rod (73) passes through the through hole (74).

5. The anti-dislodgement puncture device according to claim 1, characterized in that, A tube body (4) is provided on the elastic part (2) corresponding to the protrusion (21). A connector (41) is provided inside the tube body (4). A guide rod (42) is inserted into the connector (41). The guide rod (42) extends to the outside of the tube body (4) at one end toward the infusion bottle. A rubber sleeve (43) is provided on the outer periphery of the guide rod (42) near that end. The horizontal height of the rubber sleeve (43) is higher than the horizontal height of the puncture part of the puncture device body (1). A connecting plate (44) is provided at the other end of the guide rod (42). A second spring (45) is provided between the connecting plate (44) and the connector (41). The puncture device body (1) moves toward the infusion bottle so that the rubber sleeve (43) abuts against the curved surface at the mouth of the infusion bottle, and the guide rod (42) moves away from the infusion bottle.

6. The anti-dislodgement puncture device according to claim 5, characterized in that, The elastic part (2) has a mounting part (3) on the side away from the axis of the puncture device body (1). A rotating shaft (31) is provided on the tube body (4). The rotating shaft (31) is rotatably connected in the mounting part (3). The tube body (4) makes a circular motion with the rotating shaft (31) as the axis.

7. The anti-dislodgement puncture device according to claim 6, characterized in that, The mounting part (3) has two mounting areas (32) on one side of the tube body (4), and a positioning area (33) is formed between the two mounting areas (32). The rotating shaft (31) is rotatably connected to the positioning area (33). A retractable positioning block (34) is provided at the part of the mounting area (32) near the positioning area (33). The tube body (4) is located between the two positioning blocks (34), and the tube body (4) rotates to move the positioning block (34) toward the mounting part (3).

8. The anti-dislodgement puncture device according to claim 7, characterized in that, An assembly groove (321) is provided on the installation area (32). The positioning block (34) is set in the assembly groove (321), and the positioning block (34) is connected to the assembly groove (321) by a third spring (322). The side of the positioning block (34) away from the third spring (322) extends to the outside of the assembly groove (321), and this side of the positioning block (34) is set as an arc surface (341). The arc surface (341) abuts against the tube body (4).

9. The anti-dislodgement puncture device according to claim 5, characterized in that, The connector (41) includes a sphere (411) and several support parts (412). The several support parts (412) are arranged in a ring array on the inner wall of the tube (4). The sphere (411) is rolled between the several support parts (412). The side of the support part (412) facing the sphere (411) is set as an arc surface (412a). The guide rod (42) is inserted into the sphere (411). The tube (4) is provided with an annular plate (413) coaxial with the connecting plate (44) in the direction away from the infusion bottle. The outer diameter of the connecting plate (44) is adapted to the inner diameter of the annular plate (413). The guide rod (42) moves in the direction away from the infusion bottle so that the connecting plate (44) passes through the annular plate (413).

10. The anti-dislodgement puncture device according to claim 9, characterized in that, The annular plate (413) is provided with a plurality of elastic plates (414), the vertical projection of the connecting plate (44) falls on the elastic plate (414), and a fluorescent layer (415) is provided on the outer periphery of the connecting plate (44); the connecting plate (44) passes through the annular plate (413) to move the fluorescent layer (415) from inside the tube (4) to outside the tube (4), and squeezes the elastic plate (414) to deform it.

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