Tension ring injector
By designing a tension ring injector using sleeve, push rod, injection head and trigger, the problem of not being easy to separate the tension ring in the existing injector is solved, and stable connection and smooth separation during the injection process are achieved, and the convenience of operation is improved.
Patent Information
- Application Number
- CN202420687579.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-04-03
AI Technical Summary
During the injection process of existing tension ring injectors, the hook and tension ring are not easily separated, resulting in difficulty in operation.
A tension ring injector is designed, adopting a sleeve, push rod, injection head and trigger structure. Through the cooperation of the push rod and trigger, the hook can be bent at least 90° on the outside of the injection head, ensuring the stable connection and smooth separation of the tension ring and the injection head.
The tension ring is stable and smoothly separated from the injector during the injection process, reducing the difficulty of operation for medical staff.
Smart Images
Figure CN222640735U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of ophthalmic treatment auxiliary equipment, and in particular to a tension ring injector. Background Art
[0002] The tension ring commonly used at present is an open ring that can be constrained. After being implanted in the capsular bag, it is close to the capsular bag membrane, which can maintain the tension of the capsular bag, prevent the posterior capsular membrane from wrinkling, resist the contraction of the capsular bag, and maintain the integrity of the capsular bag. Two positioning holes are usually set on the opposite sides of the tension ring, which are conveniently connected to the injector through the positioning holes, and then injected into the patient's eye through the injector.
[0003] However, in order to ensure that the injector can be stably connected to the tension ring and stably stored in the injection head, the curvature of the retractor of the injector is usually set as large as possible. However, when the curvature is large, the retractor hook and the tension ring will be difficult to separate during the process of injecting the tension ring into the patient's eye. Utility Model Content
[0004] The embodiment of the present application provides a tension ring injector, which can ensure that the injector can stably store the tension ring into the injection head, and can also ensure that the two can be smoothly separated during the process of injecting the tension ring into the patient's eye.
[0005] The specific technical solution of this embodiment is as follows:
[0006] An embodiment of the present application provides a tension ring injector, comprising: a sleeve; a push rod, which is arranged in the sleeve and can move relative to the sleeve; an injection head, which is connected to the sleeve; the injection head is hollow, and the internal space of the injection head is connected to the internal space of the sleeve; a trigger, which is arranged in the injection head, and a hook is provided on the side of the trigger away from the sleeve; when the push rod moves into the sleeve, the trigger moves away from the sleeve so that the hook at least partially moves to the outside of the injection head; when the hook partially moves to the outside of the injection head, the bending angle of the hook is not less than 90°.
[0007] In some embodiments, the hook is constrained by the inner wall of the injection head when it is located at the injection head so that the bending angle of the hook is not less than 90°; when the hook is completely located outside the injection head, the bending angle of the hook is less than 90°.
[0008] In some embodiments, a cross section of the injection head parallel to the injection head opening is elliptical.
[0009] In some embodiments, a side opening of the injection head away from the sleeve is formed with slide grooves on two opposite sides located on the long axis.
[0010] In some of the embodiments, the injection head is bent along the extension direction of its short axis.
[0011] In some of the embodiments, a silicone pad is provided at one end of the push rod away from the sleeve.
[0012] In some of the embodiments, the outer side of the sleeve is provided with anti-slip grooves.
[0013] In some embodiments, the injection head is detachably connected to the sleeve.
[0014] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0015] The tension ring injector provided in the embodiment of the present application can ensure that the trigger and the tension ring are stably stored in the injection head, and can also ensure that the tension ring and the trigger can be smoothly separated during the process of injecting the tension ring into the patient's eye. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 is a schematic structural diagram of a tension ring injector provided in some embodiments of the present application;
[0018] Figure 2 is a schematic diagram of the structure of an injection head provided in some embodiments of the present application;
[0019] Figure 3 is a schematic diagram of a state in which a trigger provided by some embodiments of the present application is constrained within an injection head;
[0020] Figure 4 This is a state diagram of a trigger in a natural state provided by some embodiments of the present application.
[0021] in:
[0022] 10. Sleeve; 20. Push rod; 30. Injection head; 301. Slide; 40. Trigger; 401. Hook. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.
[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0025] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.
[0026] The use of "suitable for" or "configured to" in this application is meant to be open and inclusive language, which does not exclude devices that are suitable for or configured to perform additional tasks or steps. In addition, the use of "based on" is meant to be open and inclusive, because the process, step, calculation or other action "based on" one or more stated conditions or values can be based on additional conditions or values beyond the stated values in practice.
[0027] In this application, the word "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described in this application as "exemplary" is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present application.
[0028] The present application embodiment provides a tension ring injector, see Figure 1 and Figure 3, including a sleeve 10, a push rod 20, an injection head 30 and a trigger 40. Among them, at least in the working state, the push rod 20 can be relatively movable relative to the sleeve 10 and is arranged in the sleeve 10. The injection head 30 is connected to one end of the sleeve 10; the injection head 30 is hollow, and the internal space of the injection head 30 is connected to the internal space of the sleeve 10. The trigger 40 is arranged in the injection head 30, and a hook 401 is provided on the side of the trigger 40 away from the sleeve 10. When the push rod 20 moves into the sleeve 10, the trigger 40 moves away from the sleeve 10 so that the hook 401 at least partially moves to the outside of the injection head 30. When the hook 401 is partially moved to the outside of the injection head 30, the bending angle of the hook 401 is not less than 90°. The bending angle of the hook 401 is referenced by the extension direction of the opposite ends of the hook 401.
[0029] Based on the above embodiments, the working principle of the tension ring injector provided by the present application is: in the preparation stage of the tension ring injection operation, the medical staff holds the sleeve 10, and then pushes the push rod 20 to move into the sleeve 10, and drives the trigger 40 to move away from the sleeve 10 during the movement of the push rod, until the hook 401 on the trigger 40 moves at least partially to the outside of the injection head 30 (the trigger 40 is located as a whole in the injection head 30 in a natural state), and then connects the hook 401 to the locator (closed annular structure) at the edge of one end of the tension ring, and then moves the push rod 20 into the sleeve 10, driving the trigger 40 to move toward the sleeve 10 until the tension ring is completely constrained in the injection head 30, completing the preparation action. When performing the tension ring injection operation, the push rod 20 is pushed to move into the sleeve 10, and the trigger 40 is driven again and then moves away from the sleeve 10. During the movement of the trigger 40, the tension ring is pushed to move outside the injection head 30. The part of the tension ring that moves to the outside of the injection head 30 loses the constraint of the inner wall of the injection head 30 and becomes a ring structure again. Finally, the tension ring is completely moved to the outside of the injection head 30, forming a ring again, and then the hook 401 is separated from the tension ring to complete the tension ring injection operation.
[0030] Through the arrangement of the above embodiment, it is possible to ensure that the trigger 40 and the tension ring are stably accommodated in the injection head 30, and it is also possible to ensure that the tension ring and the trigger 40 can be smoothly separated during the process of injecting the tension ring into the patient's eye.
[0031] In some of these examples, see Figure 3 and Figure 4, the hook 401 is constrained by the inner wall of the injection head 30 when it is located in the injection head 30 so that the bending angle of the hook 401 is not less than 90°; when the hook 401 is completely located outside the injection head 30, the bending angle of the hook 401 is less than 90°. In this embodiment, the hook 401 is in a constrained state when it is located in the injection head 30 as a whole. The hook 401 is made of elastic material, and the inner wall of the injection head 30 constrains the hook 401 so that the bending angle of the hook 401 is greater than 90° and less than 180°. When the hook 401 is completely located outside the injection head 30, the hook 401 is in a natural state, and the bending angle of the hook 401 is less than 90°. In the process of the hook 401 changing from the constrained state to the natural state, the inner wall of the injection head 30 constrains the hook 401 less and less, so the bending angle of the hook 401 will gradually decrease.
[0032] Through the arrangement of the above-mentioned embodiment, during the preparation stage before the tension ring injection operation, the hook 401 of the trigger 40 can be completely moved to the outside of the injection head 30. At this time, the bending angle of the hook 401 is less than 90°, and the bending degree is relatively large. At this time, the hook 401 can be more stably connected to the tension ring, ensuring that the tension ring can smoothly and stably enter the injection head 30. After the tension ring enters the injection head 30, the hook 401 still has a certain bending angle when constrained, so it can still maintain connection with the tension ring. When the tension ring injection operation is performed, the hook 401 of the trigger 40 can be partially moved to the outside of the injection head 30. At this time, the bending angle of the hook 401 is not less than 90°, and the bending degree is relatively small, which can ensure that the hook 401 and the tension ring are more smoothly separated, reducing the difficulty of operation for medical staff.
[0033] In other embodiments, the hook 401 is configured to have a bending angle of not less than 90°, and the hook 401 does not contact the inner wall of the injection head 30, and the bending angle is always maintained.
[0034] In some of these examples, see Figure 2 , the cross section of the injection head 30 is elliptical, and the cross section is parallel to the opening of the injection head 30. When the tension ring is constrained in the injection head 30, it will abut against the inner wall of the injection head 30. In the existing injector, the cross section of the injection head 30 is circular. At this time, the tension ring will move relative to the injection head 30 when it is constrained in the injection head 30, which will affect the trajectory of the tension ring when it is ejected, causing a certain error in the judgment of the medical staff, and it is necessary to correct the trajectory during the injection process, which will further increase the operation steps of the medical staff and reduce the operation efficiency. When using the injection head 30 that is itself elliptical, the tension ring will be constrained on the inner walls on both sides of the long axis of the injection head 30 and remain fixed, and no relative displacement will occur, thereby effectively avoiding the occurrence of the above situation.
[0035] In some of these embodiments, see Figure 2 The injection head 30 has an opening on one side away from the sleeve 10 and has slide grooves 301 formed on opposite sides of the long axis. Through this arrangement, the formed slide groove 301 is mainly used to accommodate the tension ring, and when accommodating the tension ring, it further prevents the tension ring from relatively moving. On the other hand, it can also facilitate the positioning of the position where the tension ring is ejected.
[0036] In some of the embodiments, a notch may be further provided at the position of the slide groove. By providing the notch, the tension ring can be ejected so that the area leaving the injection head 30 is perpendicular to the side wall of the injection head 30, which can make the curvature of the tension ring larger in the early stage and make it more convenient to place the tension ring.
[0037] In some embodiments, the injection head 30 is bent along the extension direction of its short axis. This configuration allows the injection head 30 to fit the patient's eyeball more closely during the tension ring injection process, thereby allowing the end of the injection head to more easily approach the patient's eye to perform the tension ring injection operation.
[0038] In some embodiments, a silicone pad is provided at one end of the push rod 20 away from the sleeve 10. This arrangement can make the medical staff more comfortable during the preparation and operation stages of the tension ring injection, thereby improving the experience of the medical staff.
[0039] In some embodiments, anti-slip grooves are provided on the outer side of the sleeve 10. This arrangement can prevent the sleeve 10 from sliding relative to the hands of medical personnel, thereby affecting the operation.
[0040] In some embodiments, the injection head 30 is detachably connected to the sleeve 10. This arrangement facilitates the sterilization and packaging of the tension ring injector. After the injector is used, the injection head 30 can be directly removed for sterilization. When packaging, the injection head 30 and the sleeve 10 can also be separated to facilitate packaging. Of course, the tension ring injector can also be preassembled.
[0041] The above is a detailed introduction to a tension ring injector provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A tension ring injector, characterized in that: include: Sleeve; A push rod, the push rod is relatively movable relative to the sleeve and is disposed in the sleeve; an injection head, said sleeve being connected; The injection head is hollow, and the internal space of the injection head is connected with the internal space of the sleeve; A trigger is arranged in the injection head, and a hook is provided on the side of the trigger away from the sleeve; when the push rod moves into the sleeve, the trigger moves away from the sleeve so that the hook at least partially moves to the outside of the injection head; when the hook partially moves to the outside of the injection head, the bending angle of the hook is not less than 90°.
2. The tension ring injector according to claim 1, characterized in that: When the hook is located at the injection head, it is constrained by the inner wall of the injection head so that the bending angle of the hook is not less than 90°; when the hook is completely located outside the injection head, the bending angle of the hook is less than 90°.
3. The tension ring injector according to claim 1, characterized in that: The cross section of the injection head parallel to the injection head opening is elliptical.
4. The tension ring injector according to claim 3, characterized in that: The injection head has an opening on one side away from the sleeve and has slide grooves formed on two opposite sides located on the long axis.
5. The tension ring injector according to claim 3, characterized in that: The injection head is bent along the extension direction of its short axis.
6. The tension ring injector according to claim 1, characterized in that: A silicone pad is provided at one end of the push rod away from the sleeve.
7. The tension ring injector according to claim 1, characterized in that: The outer side of the sleeve is provided with anti-slip grooves.
8. The tension ring injector according to claim 1, characterized in that: The injection head is detachably connected to the sleeve.