Vascular closure gel pusher device

Abstract

The application discloses a blood vessel closure glue pushing device, which comprises a shell, one part of the shell serving as a handle, a glue pushing rod slidably arranged in the shell and having a working end extending out of the shell, a driving member pivotally connected to the shell and having a working direction and a reset direction opposite to the relative movement trend of the shell, a reset member acting between the driving member and the shell and used for moving the driving member in the reset direction, and a transmission mechanism transmissionally connected between the driving member and the glue pushing rod, the driving member driving the glue pushing rod when moving in the working direction. The blood vessel closure glue pushing device can adjust the pushing amount and ensure stable and quantitative pushing.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a vascular closure adhesive delivery device. Background Technology

[0002] Varicose veins are a common disease of the venous system. The main causes are congenitally thin blood vessel walls or prolonged periods of maintaining the same posture, leading to blood pooling. Over time, this pooling damages the venous valves, resulting in high venous pressure and causing the veins to bulge out of the skin. Based on the location, varicose veins can be divided into upper limb varicose veins and lower limb varicose veins.

[0003] Currently, treatment methods for varicose veins include stripping, minimally invasive surgery, and endovenous varicose vein closure. Among these, endovenous varicose vein closure uses a delivery device to send closure adhesive to the target location to seal the damaged blood vessel.

[0004] Existing delivery devices can only deliver a fixed amount each time. When more venous closure adhesive is needed, it can only be delivered by pressing twice or more, and the delivery amount cannot be adjusted. Furthermore, the amount of adhesive delivered cannot be guaranteed during the pressing process. Summary of the Invention

[0005] In view of the problems of the prior art, this application provides a vascular closure adhesive delivery device that can adjust the delivery amount and achieve stable quantitative delivery.

[0006] The vascular closure adhesive delivery device of this application includes:

[0007] A housing, a portion of which serves as a handle;

[0008] A glue delivery rod is slidably installed inside the housing, with one end being a working end that can extend out of the housing;

[0009] The driving component is pivotally connected to the housing and has a relative working direction and a reset direction according to the relative movement trend with respect to the housing;

[0010] A reset element acts between the drive element and the housing to move the drive element along the reset direction;

[0011] A transmission mechanism is connected between the driving member and the glue feeding rod. The driving member drives the glue feeding rod as it moves along the working direction.

[0012] Optionally, the transmission mechanism includes:

[0013] A rack is fixed to the glue delivery rod;

[0014] The transmission gear is rotatably mounted inside the housing and meshes with the rack. The transmission gear is linked with the drive component.

[0015] Optionally, the transmission gear is coaxially fixed with a ratchet, and the driving member is hinged with a pawl. The ratchet and the pawl cooperate, and the driving member moves along the working direction and drives the ratchet in one direction.

[0016] Optionally, the reset element is an elastic strip, one end of which is fixed to the driving element, and the other end abuts against the housing;

[0017] The housing is provided with a limiting shaft, and the other end of the elastic strip abuts against the limiting shaft.

[0018] Optionally, the housing is provided with a slide rail for supporting the glue feeding rod.

[0019] Optionally, the toothed rod is fixed on one side and has a guide rib on the other side, and the housing is provided with a clamping arm that slides against the guide rib.

[0020] Optionally, the vascular closure adhesive delivery device further includes an adjusting member installed within the housing and slidably positioned. The adjusting member has multiple working positions and interacts with the driving member at each working position to limit the movement stroke of the driving member.

[0021] Optionally, the inner wall of the housing is provided with an arc-shaped slide, and multiple positioning grooves are provided along the slide. The adjusting member is installed on the slide and has an elastic head at its end that cooperates with the positioning groove.

[0022] Optionally, the adjusting member is a rod-shaped structure, with one end extending out of the housing as an operating end. The housing has a clearance opening corresponding to the operating end, and the elastic head is located at the other end of the adjusting member. At least a portion of the adjusting member is located on the movement path of the driving member.

[0023] Optionally, a positioning plate is fixed on the adjusting member, and the positioning plate abuts against the driving member.

[0024] Compared with the prior art, this application has the following technical effects:

[0025] The vascular closure adhesive delivery device of this application achieves stable delivery of the adhesive delivery rod through the cooperation of the transmission mechanism, the driving component and the reset component, thus ensuring the amount of venous closure adhesive dispensed.

[0026] By setting an adjustment component with multiple working positions to limit the movement stroke of the drive component, the pushing amount of the glue feeding rod is adjustable, reducing the cumbersomeness of the glue dispensing operation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the vascular closure adhesive delivery device in one embodiment of this application;

[0028] Figure 2 This is a cross-sectional view of a vascular closure adhesive delivery device according to an embodiment of this application;

[0029] Figure 3 for Figure 2 Enlarged view of section A in the middle;

[0030] Figure 4 for Figure 2 Enlarged view of section B;

[0031] Figure 5 This is a partial view of the adjusting member in one embodiment;

[0032] Figure 6 This is a partial view of a vascular closure adhesive delivery device in one embodiment of this application;

[0033] Figure 7 for Figure 6 Enlarged view of section A in the middle;

[0034] Figure 8 for Figure 6 Enlarged view of section B;

[0035] Figure 9 This is a schematic diagram of a blood vessel closure adhesive pushing device with a pull rod assembly in one embodiment;

[0036] Figure 10 This is a diagram showing the fit between the pull rod assembly and the transmission mechanism in one embodiment;

[0037] Figure 11 This is a schematic diagram of the tie rod assembly in one embodiment.

[0038] The annotations in the figure are explained as follows:

[0039] 10. Housing; 11. Handle; 12. Roller; 13. Slide rail; 14. Slide path; 15. Positioning groove; 16. Clearance opening;

[0040] 20. Glue delivery rod; 21. Working end; 22. Guide rib; 23. Clamping arm; 24. Limiting component;

[0041] 30. Driving component; 31. Pawl; 32. Buffer component;

[0042] 40. Reset component;

[0043] 50. Transmission mechanism; 51. Rack; 52. Transmission gear; 521. Ratchet;

[0044] 60. Adjusting component; 61. Elastic head; 62. Operating end; 63. Positioning plate; 64. Cavity; 65. Elastic component;

[0045] 70. Pull rod assembly; 71. First pull rod; 72. Second pull rod. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] It should be noted that when a component is said to be "connected" to another component, it can be directly connected to the other component or it can be connected to a component in between. When a component is said to be "set on" another component, it can be directly set on the other component or it may be set to a component in between.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0049] See Figure 1 , 2 An embodiment of this application provides a vascular closure adhesive delivery device, including a housing 10, an adhesive delivery rod 20, a drive member 30, a reset member 40, and a transmission mechanism 50. A portion of the housing 10 serves as a handle 11 for easy gripping by the operator. One end of the housing 10 is typically detachably connected to an injection assembly storing the closure adhesive. The adhesive delivery rod 20 is slidably installed within the housing 10, and one end is a working end 21 that extends out of the housing 10 and can be inserted into the injection assembly. The drive member 30 is pivotally connected to the housing 10, and the transmission mechanism 50 is drively connected between the drive member 30 and the adhesive delivery rod 20. The reset member 40 acts between the drive member 30 and the housing 10.

[0050] The drive component 30 has a relative working direction and a reset direction according to its relative movement trend with respect to the housing 10. That is, when the operator holds the handle 11 and grips the drive component 30, the drive component 30 moves in the working direction and drives the glue delivery rod 20 through the transmission mechanism 50, causing the working end 21 to move like a piston within the injection assembly, thereby pushing the closing glue. When the operator releases their grip on the drive component 30, the reset component 40 enables the drive component 30 to move in the reset direction.

[0051] See Figure 6 , 8In the illustrated embodiment, the glue delivery rod 20 is a straight rod, and its working end 21 is provided with a limiting member 24 to ensure that the glue delivery rod is concentrically connected with the injection assembly. The limiting member 24 can be a limiting disc or the like. During the pushing process, the glue delivery rod 20 remains in a concentric position, and even in unexpected situations, the glue delivery rod can still remain in a horizontal state. This design can improve the movement stability of the glue delivery rod 20 and the overall ease of operation of the device.

[0052] See Figure 3 In the embodiment shown, the transmission mechanism 50 includes a rack 51 and a transmission gear 52, wherein the rack 51 is fixed to the glue feeding rod 20; the transmission gear 52 is rotatably installed in the housing 10 and meshes with the rack 51. The transmission gear 52 is also linked with the drive member 30. Through the close mutual transmission of the drive member 30, the transmission gear 52 and the rack 51, the movement of the glue feeding rod 20 can be easily and flexibly driven, while avoiding the occurrence of jamming, skipping and other situations.

[0053] See Figure 4 In the embodiment shown, a ratchet 521 is coaxially fixed to the transmission gear 52, and a pawl 31 that cooperates with the ratchet 521 is hinged to the drive member 30. When the drive member 30 moves along the working direction, it drives the ratchet 521 in one direction, thereby causing the glue feeding rod 20 to push quantitatively.

[0054] See Figure 6 In the illustrated embodiment, the reset member 40 is an elastic strip, one end of which is fixed to the drive member 30, and the other end abuts against the housing 10. Furthermore, a roller 12 is provided inside the housing 10 to support the elastic strip.

[0055] In another embodiment, a limiting shaft can also be provided inside the housing 10, with the other end of the elastic strip abutting against the limiting shaft (not shown).

[0056] See Figure 2 , 6 In the illustrated embodiment, a slide rail 13 is provided inside the housing 10 to support the glue-feeding rod 20, which can move along the slide rail 13. Furthermore, the glue-feeding rod 20 has two opposing sides, one side of which is fixed with the aforementioned rack 51, and the other side has a guide rib 22. A clamping arm 23 is provided inside the housing 10, which slides against the guide rib 22 to stabilize the glue-feeding rod 20 and prevent interference with its sliding.

[0057] See Figure 4In the illustrated embodiment, the vascular closure adhesive delivery device further includes an adjusting member 60, which is slidably mounted within the housing 10. The adjusting member 60 has multiple working positions, each of which interacts with the driving member 30, thereby limiting the travel of the driving member 30 and consequently limiting the delivery travel of the adhesive delivery rod 20, i.e., the amount of closure adhesive delivered. The vascular closure adhesive delivery device provided in this embodiment can adjust the amount of closure adhesive delivered, reducing operational complexity and making the process more convenient and efficient.

[0058] Specifically, the inner wall of the housing 10 is provided with an arc-shaped slide rail 14, and a positioning groove 15 is provided along the slide rail 14. There can be multiple positioning grooves 15. The adjusting member 60 is installed on the slide rail 14, and its end is provided with an elastic head 61. The elastic head 61 can cooperate with each positioning groove 15 respectively, so that the adjusting member 60 is in different working positions.

[0059] The adjusting member 60 can be a rod-shaped structure, with one end extending out of the housing 10 as the operating end 62, and the other end being the aforementioned elastic head 61. The housing 10 has a clearance opening 16 corresponding to the operating end 62. At least a portion of the adjusting member 60 is located on the movement path of the driving member 30. The operator can use the operating end 62 to make the elastic head 61 engage with the positioning grooves 15 at different positions, thereby allowing the adjusting member 60 to enter different working positions.

[0060] To better limit the movement stroke of the drive component 30, a positioning disk 63 is fixed on the adjusting component 60. The adjusting component 60 can abut against the drive component 30 through the positioning disk 63. When the adjusting component 60 is in different working positions, there is a corresponding gap between the positioning disk 63 and the drive component 30. Each gap determines the degree of restriction on the movement of the drive component 30 in the working direction, thereby controlling the transmission energy of the drive transmission mechanism 50, and ultimately enabling the glue feeding rod 20 to achieve different pushing amounts.

[0061] See Figure 5 The adjusting member 60 is a telescopic rod-shaped structure with a cavity 64 inside to house the elastic head 61. One end of the elastic head 61 is provided with an elastic element 65, such as a spring. When the working position needs to be adjusted, the extension and retraction of the elastic head 61 is controlled by the positioning plate 63.

[0062] In one embodiment, a buffer 32 is provided between the driving component 30 and the transmission mechanism 50. This buffer reduces noise during their transmission, improving the user experience, and also reduces friction between them, extending the lifespan of the device. For example... Figure 7 In the middle, the pawl 31 rests on the end of the ratchet 521 and a silencing block is fixed thereon.

[0063] After use, to reset the glue delivery rod of the vascular closure adhesive delivery device, in one embodiment, the vascular closure adhesive delivery device further includes a pull rod assembly 70. The pull rod assembly 70 rotates within the housing, and one end of it extends into the housing 10 and is linked with the transmission mechanism 50 to drive the glue delivery rod 20 to reset. See [link to previous section]. Figure 9 .

[0064] See details Figure 10 , 11 The pull rod assembly 70 includes a first pull rod 71 and a second pull rod 72 that are interlocked. A transmission gear 52 is rotatably mounted on the first pull rod 71, and a ratchet 521 is rotatably mounted on the second pull rod 72. During operation, the first pull rod 71 is first rotated and pulled outward to separate from the second pull rod 72, thereby disengaging the transmission gear 52 and the ratchet 521. Then, the first pull rod 71 is rotated again to drive the transmission gear 52 to rotate, which in turn causes the glue delivery rod 20 to move horizontally, thus achieving a reset.

[0065] The technical features of the embodiments described above can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0066] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A vascular closure adhesive delivery device, characterized in that, include: The housing has a portion that serves as a handle, and the inner wall of the housing has an arc-shaped slide rail with multiple positioning grooves along the slide rail. A glue delivery rod is slidably installed inside the housing, with one end being a working end that can extend out of the housing; The driving component is pivotally connected to the housing and has a relative working direction and a reset direction according to the relative movement trend with respect to the housing; A reset element acts between the drive element and the housing to move the drive element along the reset direction; A transmission mechanism is connected between the driving member and the glue feeding rod, and the driving member drives the glue feeding rod when it moves along the working direction. An adjusting member is slidably mounted within the housing. The adjusting member has multiple working positions, each interacting with a driving member to limit its travel. The adjusting member is mounted on a slide rail and has an elastic head at its end. The elastic head engages with multiple positioning slots to position the adjusting member in different working positions. A positioning plate is fixed to the adjusting member, abutting against the driving member. The positioning plate controls the extension and retraction of the elastic head to adjust the working position of the adjusting member. Different distances exist between the positioning plate and the driving member in different working positions. The adjusting member is a retractable rod-shaped structure with an internal cavity for receiving the elastic head. One end of the adjusting member extends out of the housing as an operating end. The housing has a clearance opening corresponding to the operating end. The elastic head is located at the other end of the adjusting member, with one end situated within the cavity and equipped with an elastic element. At least a portion of the adjusting member is located along the movement path of the driving member. The transmission mechanism includes: A rack is fixed to the glue delivery rod; A transmission gear is rotatably mounted inside the housing and meshes with the rack; the transmission gear is linked with the driving component. The transmission gear is coaxially fixed with a ratchet, and the driving member is hinged with a pawl. The ratchet and the pawl cooperate, and the driving member moves along the working direction and drives the ratchet in one direction. The vascular closure adhesive delivery device also includes a pull rod assembly, which rotates within the housing. One end of the pull rod assembly extends into the housing and is linked with the transmission mechanism to drive the adhesive delivery rod to reset. The pull rod assembly includes a first pull rod and a second pull rod that are interlocked. The transmission gear is rotatably mounted on the first pull rod, and the ratchet is rotatably mounted on the second pull rod. During operation, the first pull rod can be separated from the second pull rod by rotating and pulling it outward, thereby disconnecting the transmission gear from the ratchet. After further rotation, the transmission gear can be driven to rotate, thereby causing the glue delivery rod to move horizontally and achieve a reset.

2. The vascular closure adhesive delivery device according to claim 1, characterized in that, The reset element is an elastic strip; One end of the elastic strip is fixed to the driving component, and the other end abuts against the housing; Alternatively, a limiting shaft may be provided inside the housing, and the other end of the elastic strip abuts against the limiting shaft.

3. The vascular closure adhesive delivery device according to claim 1, characterized in that, The housing is equipped with a slide rail that supports the glue delivery rod.

4. The vascular closure adhesive delivery device according to claim 1, characterized in that, The toothed rod is fixed on one side and has a guide rib on the other side. The housing has a clamping arm that slides against the guide rib.

5. The vascular closure adhesive delivery device according to claim 1, characterized in that, The working end can extend into the injection assembly and is provided with a limiting member to ensure that the glue delivery rod is concentrically connected with the injection assembly.

6. The vascular closure adhesive delivery device according to claim 1, characterized in that, A buffer is provided between the driving component and the transmission mechanism.

7. The vascular closure adhesive delivery device according to claim 1, characterized in that, A buffer is provided between the driving component and the transmission mechanism. The buffer is a noise-reducing block, which is fixed to the end of the pawl that rests on the ratchet.

8. The vascular closure adhesive delivery device according to claim 2, characterized in that, The housing is equipped with a roller shaft, which is used to support the elastic strip.

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