Ocular implant injector and ocular implant injection method

Abstract

The application discloses an eye implant injector and an eye implant injection method. The eye implant injector comprises a holding handle, a holding surface on the outside of the holding handle, a hollow inside of the holding handle forming a sliding cavity, a front end port on the front end of the holding handle, the front end port communicating with the sliding cavity, a sliding body arranged in the sliding cavity of the holding handle and in sliding cooperation with the sliding cavity, an outer catheter, a hollow inside of the outer catheter forming a guide cavity, a rear end of the outer catheter connected with the front end of the holding handle, an injection needle connected with the sliding body, the injection needle passing through the front end port and in sliding cooperation with the guide cavity of the outer catheter, and an end clamp installed on the front end of the injection needle and having at least a first clamp head and a second clamp head capable of being opened and closed with each other. The application can conveniently implant the eye implant, is convenient to operate, and can better guarantee the implantation effect.

Description

Technical Field

[0001] This invention belongs to the field of medical devices, specifically relating to an ocular implant injector and an ocular implant injector method. Background Technology

[0002] Eye diseases can be caused by congenital diseases or acquired damage. For some eye diseases, it is necessary to implant eye implants in the appropriate locations to effectively improve the eye disease and thus achieve the purpose of alleviating or treating the condition.

[0003] However, due to the limited operating space and size restrictions of the implant, the following drawbacks may occur during the implantation process:

[0004] 1. Due to the limited operating space and the size limitations of the eye implant, the operation is inconvenient for the operator;

[0005] 2. Due to the limited operating space and the size limitations of the eye implant, the reliability of the implantation cannot be effectively guaranteed, which affects the implantation effect and the safety needs to be improved. Summary of the Invention

[0006] The purpose of this invention is to provide an ocular implant injector and an ocular implant injection method. This invention can conveniently implant ocular implants, is easy to operate, and can better guarantee the implantation effect.

[0007] This invention provides an ocular implant injector, comprising:

[0008] The grip has a gripping surface on its outer side, a hollow interior forming a sliding cavity, and a front port at the front end of the grip that communicates with the sliding cavity.

[0009] A slider is disposed in the sliding cavity of the grip handle and slides in cooperation with the sliding cavity.

[0010] An outer conduit, which is hollow and forms a guide cavity inside the outer conduit, and the rear end of the outer conduit is connected to the front end of the grip handle;

[0011] An injection needle is connected to the sliding body. After passing through the front port, the injection needle slides into the guide cavity of the external catheter.

[0012] An end clamp is mounted on the front end of the injection needle and has at least a first clamp and a second clamp that can be opened and closed with each other.

[0013] In one embodiment, the inner wall of the first clamp has a positioning groove along the longitudinal direction of the injection needle, the positioning groove being arc-shaped; the inner wall of the second clamp has at least one clamping recess and at least one clamping protrusion, the clamping recess and clamping protrusion being spaced apart along the longitudinal direction of the injection needle; the first clamp and the second clamp have arc-shaped outer walls extending along the longitudinal direction of the injection needle, and when the first clamp and the second clamp are closed, the end clamp is cylindrical.

[0014] In one embodiment, the gripping handle includes a main handle body and a front end head. The front end of the main handle body has an insertion hole, and the front end head has an insertion end and a transition end. The insertion end is located on the rear side of the front end head, and the transition end is located on the front side of the front end head. The outer wall of the insertion end cooperates with the inner wall of the insertion hole. The front port is disposed on the front end head, and the external guide tube is connected to the front port.

[0015] In one embodiment, the main handle includes a support shell and a grip sleeve, the grip sleeve having a lower hardness than the support shell, and the grip sleeve being fitted onto the outer surface of the support shell.

[0016] In one embodiment, a recess is provided on the outer surface of the support shell, and the grip sleeve is a rubber sleeve that is fitted inside the recess of the support shell.

[0017] In one embodiment, the diameter of the grip sleeve is larger at the front end and smaller at the rear end; correspondingly, the outer diameter of the support shell at the recess is larger at the front end and smaller at the rear end; the rear end of the grip sleeve has at least two tail pieces, and a movable groove is formed between the two tail pieces.

[0018] In one embodiment, the outer wall of the transition end of the front end head is tapered and smoothly transitions to the outer wall of the front end of the main handle body; the diameter of the insertion end of the front end head is smaller than the diameter of the transition end, thus forming a stepped shaft shape; the center of the front end head has a fixed shaft, the end of which is fixedly connected to the transition end, and there is an annular groove between the fixed shaft and the insertion end, with the front port located within the fixed shaft.

[0019] In one embodiment, a reinforcing sleeve is provided at the front end of the front end head. The reinforcing sleeve is inserted into the fixed shaft, with its front end exposed relative to the front end head. The outer guide tube is installed in the reinforcing sleeve and connected to the fixed shaft.

[0020] In one embodiment, a sliding groove is provided on the grip handle, the sliding body includes a slider and a button, the slider is provided with an insertion hole, the button has a fixing part and a pressing part, the fixing part of the button passes through the sliding groove and is inserted into the insertion hole, thereby realizing a fixed connection between the slider and the button, and the button is exposed relative to the sliding groove.

[0021] In one embodiment, the front end of the external conduit is curved, and the rear end of the external conduit is straight.

[0022] In one embodiment, the slider is located near the front end of the grip handle.

[0023] The present invention also provides a method for injecting an ocular implant, the method being:

[0024] The slider moves forward relative to the grip handle and pushes the injection needle forward;

[0025] The tip of the injection needle protrudes relative to the tip of the external catheter;

[0026] The ocular implant is clipped onto the end clip at the tip of the injection needle;

[0027] The slider moves rearward relative to the grip handle and retracts the injection needle backward;

[0028] The injection needle retracts the ocular implant into the external catheter via the end clamp;

[0029] Place the tip of the injection needle at the site of implantation in the eye; move the slider forward relative to the handle and push the injection needle forward;

[0030] The injection needle moves the ocular implant forward via the end clamp and implants the ocular implant into the site of the eye.

[0031] The technical solution provided by this invention has the following advantages and effects:

[0032] Before implantation, the sliding body moves forward relative to the handle, pushing the injection needle forward. The end clamp at the tip of the injection needle clamps the ocular implant. The sliding body then moves backward relative to the handle, retracting the injection needle and allowing the ocular implant to slide into the external catheter, preventing contamination. The tip of the injection needle is then placed at the implantation site on the eye, and the end clamp moves the ocular implant forward, inserting it into the desired site. The precise position of the injection needle tip allows for accurate control of the implantation site, making the operation convenient, the implantation process controllable, and significantly improving reliability and safety, thus enhancing the implantation effect of the ocular implant. Attached Figure Description

[0033] Figure 1 This is a structural diagram of the ocular implant injector in the first direction according to Embodiment 1 of the present invention;

[0034] Figure 2 This is a structural diagram of the ocular implant injector in the second direction according to Embodiment 1 of the present invention;

[0035] Figure 3 This is a third-dimensional structural diagram of the ocular implant injector in Embodiment 1 of the present invention;

[0036] Figure 4 yes Figure 3 In the middle, a cross-sectional view along the AA direction;

[0037] Figure 5 This is a cross-sectional view of the main handle body in Embodiment 1 of the present invention;

[0038] Figure 6 This is a cross-sectional view of the front end head in Embodiment 1 of the present invention;

[0039] Figure 7 This is a structural diagram of the sliding body in Embodiment 1 of the present invention;

[0040] Figure 8 yes Figure 1 The image shows a partial enlarged view of the tip of the ocular implant injector.

[0041] Figure 9 yes Figure 2 The image shows a partial enlarged view of the tip of the ocular implant injector.

[0042] Figure 10 This is a view in the first direction of the eye implant clamping state in Embodiment 1 of the present invention;

[0043] Figure 11 This is a second-direction view of the eye implant in the clamping state according to Embodiment 1 of the present invention;

[0044] Figure 12 This is a structural diagram of the ocular implant injector in Embodiment 2 of the present invention;

[0045] Figure 13 yes Figure 12 A magnified view of a portion of the image;

[0046] Explanation of reference numerals in the attached figures:

[0047] 10. Grip handle; 11. Main handle body; 111. Support shell; 1111. Insertion hole; 1112. Recess; 112. Grip sleeve; 1121. Tail piece; 1122. Movable groove.

[0048] 12. Front end head; 121. Insertion end; 122. Transition end; 123. Fixed shaft; 124. Annular groove.

[0049] 13. Sliding cavity; 14. Front port; 15. Sliding groove; 16. Longitudinal mating part.

[0050] 20. Slider; 21. Block; 211. Hole; 22. Button; 221. Fixing part; 222. Pressing part.

[0051] 30. External catheter; 31. Reinforcing cannula; 32. Guide cavity.

[0052] 40. Injection needle,

[0053] 50. End clamp; 51. First chuck; 511. Positioning groove; 52. Second chuck; 521. Clamping recess; 522. Clamping protrusion.

[0054] 60. Eye implants. Detailed Implementation

[0055] To facilitate understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0056] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0057] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0058] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0059] Example 1

[0060] like Figures 1 to 11 As shown, an ocular implant injector includes: a handle 10, a slider 20, an external catheter 30, an injection needle 40, and an end clip 50; wherein,

[0061] The outer side of the grip handle 10 has a gripping surface, the grip handle 10 is hollow to form a sliding cavity 13, and the front end of the grip handle 10 has a front port 14, which communicates with the sliding cavity 13.

[0062] The slider 20 is disposed in the sliding cavity 13 of the grip handle 10 and slides in cooperation with the sliding cavity 13;

[0063] The outer conduit 30 is hollow, and a guide cavity 32 is formed inside the outer conduit 30. The rear end of the outer conduit 30 is connected to the front end of the grip handle 10.

[0064] The injection needle 40 is connected to the sliding body 20. After passing through the front port 14, the injection needle 40 slides in cooperation with the guide cavity 32 of the external catheter 30.

[0065] The end clamp 50 is installed at the front end of the injection needle 40 and has at least a first clamp 51 and a second clamp 52 that can be opened and closed with each other.

[0066] Please combine the key points again Figures 8 to 11 As shown, the inner wall of the first clamp 51 has a positioning groove 511 along the longitudinal direction of the injection needle 40. The positioning groove 511 is arc-shaped, which can conveniently clamp the slender ocular implant 60. The inner wall of the second clamp 52 has at least one clamping recess 521 and at least one clamping protrusion 522. The clamping recess 521 and clamping protrusion 522 are spaced apart along the longitudinal direction of the injection needle 40. After the ocular implant 60 is inserted, the clamping recess 521 and clamping protrusion 522 can clamp the ocular implant 60 to prevent it from falling out. The first clamp 51 and the second clamp 52 have arc-shaped outer walls extending along the longitudinal direction of the injection needle 40. When the first clamp 51 and the second clamp 52 are closed, the end clamp 50 is cylindrical. When the injection needle 40 is pushed forward or backward, the arc-shaped outer wall can cooperate well with the inner wall of the external catheter 30, and its push is smoother. The first chuck 51 and the second chuck 52 can be connected by a hinge structure to enable the opening and closing of the first chuck 51 and the second chuck 52. Alternatively, they can be integrally processed from deformable materials, and the opening and closing of the first chuck 51 and the second chuck 52 can be achieved by bending the material.

[0067] The arc-shaped positioning groove 51 can cooperate with the second clamp 52 to clamp the eye implant 60. In addition, it can play a guiding role before clamping. That is, first bring the eye implant 60 close to the first clamp 51, adjust the eye implant 60 to roughly correspond to the clamping recess 521 and clamping protrusion 522 of the second clamp 52, and then pull the slider 20. Finally, the clamping recess 521 and clamping protrusion 522 of the second clamp 52 correspond to the corresponding protrusion and recess positions of the implant, and the first clamp 51 and the second clamp 52 clamp together to achieve longitudinal positioning.

[0068] Please combine the key points again Figure 4 , Figure 5As shown, the grip handle 10 includes a main handle body 11 and a front end head 12. The main handle body 11 includes a support shell 111 and a grip sleeve 112. The hardness of the grip sleeve 112 is lower than that of the support shell 111. The grip sleeve 112 can be made of rubber to facilitate hand gripping. The grip sleeve 112 is fitted onto the outer surface of the support shell 111. To facilitate positioning of the grip sleeve 112, a recess 1112 is provided on the outer surface of the support shell 111, and the grip sleeve 112 is fitted into the recess 1112 of the support shell 111.

[0069] The grip sleeve 112 has a larger diameter at the front end and a smaller diameter at the rear end; correspondingly, the outer diameter of the support shell 111 at the recess 1112 is larger at the front end and smaller at the rear end. The rear end of the grip sleeve 112 has at least two tail pieces 1121, and a movable groove 1122 is formed between the two tail pieces 1121. When the grip sleeve 112 is put on, it is put on from the rear end of the support shell 111. At this time, the tail pieces 1121 of the soft grip sleeve 112 can open up to each other, so that the grip sleeve 112 can be easily put on the support shell 111. The movable groove 1122 can also cooperate with the corresponding protrusion on the support shell 111 to complete the positioning of the grip sleeve 112 after it is put on from the rear end of the support shell 111, preventing the grip sleeve 112 from shifting or falling off under force.

[0070] Please combine the key points again Figures 4 to 7 As shown, a sliding groove 15 is provided on the grip handle 10. The slider 20 adopts a split structure, including a slider 21 and a button 22 for easy installation. An insertion hole 211 is provided on the slider 21. The button 22 is T-shaped, having a fixing part 221 and a pressing part 222. The fixing part 221 of the button 22 passes through the sliding groove 15 and is inserted into the insertion hole 211, thus achieving a fixed connection between the slider 21 and the button 22. The button 22 is exposed relative to the sliding groove 15. During installation, the slider 21 is first inserted into the grip handle 10, and then the fixing part 221 of the button 22 is inserted into the insertion hole 211 of the slider 21, achieving a fixed connection with the slider 21. The sliding groove 15 limits the displacement of the slider 21.

[0071] For ease of operation, the slider 20 is positioned near the front end of the grip handle 10. To ensure balanced sliding of the slider within the grip handle 10, a longitudinally engaging portion 16 is provided between the inner wall of the grip handle 10 and the outer wall of the slider 21. This longitudinally engaging portion 16 can be a strip-shaped protrusion or a strip-shaped groove.

[0072] Please combine the key points again Figure 4 , Figure 6As shown, to facilitate the installation of the slider 20, an insertion hole 1111 is provided at the front end of the main handle 11. The front end head 12 has an insertion end 121 and a transition end 122. The insertion end 121 is located on the rear side of the front end head 12, and the transition end 122 is located on the front side of the front end head 12. The outer wall of the insertion end 121 cooperates with the inner wall of the insertion hole 1111. The front port 14 is provided on the front end head 12, and the outer guide tube 30 is connected to the front port 14. After removing the front end head 12, the slider 21 can be placed into the sliding cavity 13 of the grip handle 10, and the longitudinal sliding cooperation between the grip handle 10 and the slider 21 can be realized through the longitudinal cooperation part 16. Then, the fixing part 221 of the button 22 is inserted into the insertion hole 211 after passing through the sliding groove 15. After installing the slider 20, the front end head 12 is fixed in the insertion hole 1111 at the front end of the main handle 11. The outer wall of the transition end 122 of the front end head 12 is tapered and smoothly transitions to the outer wall of the front end of the main handle 11. The diameter of the insertion end 121 of the front end head 12 is smaller than the diameter of the transition end 122, thus forming a stepped shaft shape. The front end head 12 has a fixed shaft 123 at its center, and the end of the fixed shaft 123 is fixedly connected to the transition end 122. An annular groove 124 is provided between the fixed shaft 123 and the insertion end 121. The annular groove 124 can ensure that the insertion end 121 can have a certain deformation to facilitate insertion. The fixed shaft 123 in the middle can improve the reliability of the installation of the outer guide tube 30 and reduce twisting. The front port 14 is located inside the fixed shaft 123. Furthermore, a reinforcing sleeve 31 is provided at the front end of the front end head 12. The reinforcing sleeve 31 is inserted into the fixed shaft 123, and its front end is exposed relative to the front end head 12. The outer guide tube 30 is installed in the reinforcing sleeve 31 and connected to the fixed shaft 123.

[0073] The front end of the external catheter 30 is curved, and the rear end of the external catheter 30 is straight, so as to facilitate the implantation of the ocular implant 60.

[0074] In this embodiment, the aforementioned ocular implant injector can be used to inject the ocular implant in the following manner:

[0075] The slider 20 moves forward relative to the grip handle 10 and pushes the injection needle 40 forward;

[0076] The tip of the injection needle 40 is exposed relative to the tip of the external catheter 30, and the end clamp 50 is open.

[0077] The ocular implant 60 is clipped onto the end clip 50 at the front end of the injection needle 40;

[0078] The slider 20 moves backward relative to the grip handle 10 and retracts the injection needle 40 backward, while the end clamp 50 clamps the ocular implant 60.

[0079] The injection needle 40, through the end clip 50, causes the ocular implant 60 to retract into the external catheter 30;

[0080] The tip of the injection needle 40 is placed at the implantation site in the eye; the slider 20 moves forward relative to the handle 10 and pushes the injection needle 40 forward.

[0081] The injection needle 40 moves the ocular implant 60 forward via the end clamp 50 and implants the ocular implant 60 into the implantation site of the eye.

[0082] As the injection needle 40 pushes the end clip 50 forward, the end clip 50 extends into the external catheter 30. Due to the elastic force of the end clip 50, the end clip 50 opens, allowing the ocular implant 60 to detach from the end clip 50, thus completing the implantation process of the ocular implant 60.

[0083] Before implantation, the sliding body 20 moves forward relative to the handle 10, pushing the injection needle 40 forward. The end clamp 50 at the front end of the injection needle 40 clamps the ocular implant 60. The sliding body 20 moves backward relative to the handle 10, retracting the injection needle 40 so that the ocular implant 60 slides into the external catheter 30, preventing contamination of the ocular implant 60. The front end of the injection needle 40 is placed at the implantation site in the eye, and the end clamp 50 moves the ocular implant 60 forward, implanting it into the implantation site in the eye. The position of the front end of the injection needle 40 allows for precise control of the implantation site, making the operation convenient, the implantation process controllable, and significantly improving reliability and safety, thus enhancing the implantation effect of the ocular implant 60.

[0084] The ocular implant 60 is pushed in using this ocular implant injector. As needed clinically, after one ocular implant 60 has been injected, another ocular implant 60 can be reloaded. The ocular implant injector is reusable. The connection between the ocular implant 60 and the end clip 50 is achieved through clamping, which reduces friction between the ocular implant 60 and the external catheter 30 during loading and injection, thus preventing deformation of the ocular implant 60.

[0085] Example 2

[0086] like Figure 12 , Figure 13As shown, in this embodiment, the front end of the external conduit 30 is curved, and the rear end of the external conduit 30 is straight to facilitate the implantation of the ocular implant 60; at the same time, a beveled port 33 is formed at the front end of the external conduit 30, the direction of which is along the main body direction of the external conduit 30, and a tip 331 is formed between the beveled port 33 and the outer wall of the front end of the external conduit 30.

[0087] In clinical use, a small incision is first made at the implantation site through the tip 331 to form an implantation channel. By controlling the slider 20, the end clamp 50 pushes the ocular implant 60 forward, allowing the ocular implant 60 to retract to the implantation position. In this embodiment, it is no longer necessary to prepare a special incision tool for the implantation site in advance. The tip 331 directly acts as the blade of the incision to form the implantation channel, thereby reducing the use of tools and avoiding repeated entry of multiple tools into the anterior chamber, reducing the occurrence of contamination, more effectively controlling risks, and saving surgical procedures and operation time.

[0088] The above embodiments are not an exhaustive list based on the present invention, and there may be many other embodiments not listed. Any substitutions and improvements made without departing from the concept of the present invention are within the protection scope of the present invention.

Claims

1. An ocular implant injector, characterized in that, include: The grip has a gripping surface on its outer side, and the interior of the grip is hollow to form a sliding cavity. The grip also has a front port at its front end, which communicates with the sliding cavity. A slider is disposed in the sliding cavity of the grip handle and slides in cooperation with the sliding cavity. An outer conduit, which is hollow and forms a guide cavity inside the outer conduit, and the rear end of the outer conduit is connected to the front end of the grip handle; An injection needle is connected to the sliding body. After passing through the front port, the injection needle slides into the guide cavity of the external catheter. An end clamp is mounted on the front end of the injection needle and has at least a first clamp and a second clamp that can be opened and closed with each other; The inner wall of the first clamp has a positioning groove along the longitudinal direction of the injection needle, and the positioning groove is arc-shaped; the inner wall of the second clamp has at least one clamping recess and at least one clamping protrusion, and the clamping recess and clamping protrusion are spaced apart along the longitudinal direction of the injection needle; the first clamp and the second clamp have arc-shaped outer walls extending along the longitudinal direction of the injection needle, and when the first clamp and the second clamp are closed, the end clamp is cylindrical; The gripping handle includes a main handle body and a front end head. The front end of the main handle body has an insertion hole, and the front end head has an insertion end and a transition end. The insertion end is located on the rear side of the front end head, and the transition end is located on the front side of the front end head. The outer wall of the insertion end cooperates with the inner wall of the insertion hole. The front port is disposed on the front end head, and the outer guide tube is connected to the front port. The outer wall of the transition end of the front end head is conical and smoothly transitions to the outer wall of the front end of the main handle body; the diameter of the insertion end of the front end head is smaller than the diameter of the transition end, thus forming a stepped shaft shape; the center of the front end head has a fixed shaft, the front end of which is fixedly connected to the transition end, and there is an annular groove between the fixed shaft and the insertion end, with the front port located inside the fixed shaft.

2. The ocular implant injector as described in claim 1, characterized in that, The main handle includes a support shell and a grip sleeve. The grip sleeve has a lower hardness than the support shell and is fitted onto the outer surface of the support shell.

3. The ocular implant injector as described in claim 2, characterized in that, A recessed portion is provided on the outer surface of the support shell, and the grip sleeve is a rubber sleeve that is fitted inside the recessed portion of the support shell.

4. The ocular implant injector as described in claim 2, characterized in that, The diameter of the grip sleeve is larger at the front end and smaller at the rear end; correspondingly, the outer diameter of the support shell at the recess is larger at the front end and smaller at the rear end; the rear end of the grip sleeve has at least two tail pieces, and a movable groove is formed between the two tail pieces.

5. The ocular implant injector as described in claim 1, characterized in that, A reinforcing sleeve is provided at the front end of the front end head. The reinforcing sleeve is inserted into the fixed shaft, and its front end is exposed relative to the front end head. The outer guide tube is installed in the reinforcing sleeve and connected to the fixed shaft.

6. The ocular implant injector as described in claim 1, characterized in that, A sliding groove is provided on the grip handle. The sliding body includes a slider and a button. An insertion hole is provided on the slider. The button has a fixing part and a pressing part. The fixing part of the button passes through the sliding groove and is inserted into the insertion hole to achieve a fixed connection between the slider and the button. The button is exposed relative to the sliding groove.

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