Puncture outfit for ophthalmology department
By fixing the tube body of the ophthalmic puncturer with the base part and adopting the self-closing valve bonnet and handle design, the problem of separation and dislocation of the tube body and the base part is solved, ensuring the smooth progress and safety of the operation.
Patent Information
- Application Number
- CN202421382624.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The tube parts and base parts of existing ophthalmic puncture devices are prone to separation and dislocation during the operation, affecting the surgical process and may endanger the patient's vision health.
The tube body is fixedly connected to the base piece, and is integrated into the molding process, combining the removable connection design of the self-closing valve bonnet, handle part and needle end to ensure stability and reliability during the operation.
It effectively avoids separation and dislocation between the tube body and the base piece, ensures the smooth progress of the operation, and improves the safety and accuracy of the operation.
Smart Images
Figure CN223081835U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ophthalmic instruments, and particularly relates to an ophthalmic trocar. Background Art
[0002] Ophthalmic surgery refers to the surgery performed on the eye for treating eye-related diseases. Among them, the ophthalmic trocar is an essential instrument during the surgery. Through the ophthalmic trocar, a channel for medical devices such as resection probes and infusion cannulas to enter the interior of the eyeball is established on the sclera of the eyeball.
[0003] Common ophthalmic trocars include a puncture needle, a puncture cannula, a self-sealing valve cap, and a handle part. The puncture cannula includes a tube body part and a base part. In the prior art, the tube body part and the base part adopt a mutually separated structure. During the surgery, as the medical device is inserted and removed, the tube body part and the base part are prone to separate and dislocate, affecting the surgical process and seriously endangering the patient's visual health.
[0004] It should be noted that the above content is only used to assist in understanding the technical solution of the utility model, and does not represent an admission that the above content is the prior art. Summary of the Utility Model
[0005] The main purpose of the utility model is to propose an ophthalmic trocar, aiming to avoid the mutual separation and dislocation of the tube body part and the base part during the surgery, improve the reliability of the product, and further ensure the smooth success of the surgical process.
[0006] To achieve the above purpose, the utility model proposes an ophthalmic trocar, including
[0007] A puncture cannula, the puncture cannula includes a tube body part, a base part, and a self-sealing valve cap. The tube body part and the base part are fixedly connected to each other. The tube body part has a first channel, the base part has a second channel, and the first channel and the second channel are coaxially connected and arranged. The self-sealing valve cap is wrapped on the base part. The self-sealing valve cap is used to close the second channel, and a deformable slit is opened on the self-sealing valve cap.
[0008] A puncture needle, the puncture needle includes a needle tip end and a needle tail end arranged opposite to each other. The needle tip end is used for puncturing the sclera of the eyeball. The puncture needle passes through the first channel and the second channel so that the needle tip end extends out of one end of the tube body part away from the base part.
[0009] A handle part, the handle part is detachably connected to the self-sealing valve cap. The handle part has a third channel. The needle tail end passes through the deformable slit and extends into the third channel, and the handle part is fixedly connected to the needle tail end.
[0010] In one embodiment, the self-closing valve cap is provided with an annular groove which is annularly arranged around the outer side of the self-closing valve cap.
[0011] In one embodiment, a notch is provided on the outer side of the self-closing valve cap, and a boss is provided on the handle portion. The boss can be received in the notch, and the boss and the notch are in interference fit.
[0012] In one embodiment, a clamping groove is provided on the inner side of the self-closing valve cap, and a clamping protrusion is provided on the outer side of the base member. The clamping protrusion is clamped in the clamping groove to fix the base member and the self-closing valve cap to each other.
[0013] In one embodiment, the end face of the self-closing valve cap on the side facing away from the base member has a concave area with a frustum-like structure. The end with a relatively smaller diameter in the concave area faces the base member, and the axis of the concave area coincides with the axis of the second channel; the deformable seam is provided at the end with a relatively smaller diameter in the concave area.
[0014] In one embodiment, the deformable seam includes at least three stitches, and at least three stitches are radially and equidistantly distributed in a ring with a base point as the center; the base point is located on the axis of the second channel.
[0015] In one embodiment, a first fixing portion is provided at the end of the needle, and a second fixing portion is provided inside the third channel. The first fixing portion and the second fixing portion are fixedly connected to each other.
[0016] In one embodiment, a friction structure is provided in the hand-held area of the handle portion. The friction structure is used to increase the friction force between the user and the hand-held area; the friction structure includes a plurality of convex points and / or concave-convex patterns.
[0017] In one embodiment, the ophthalmic trocar further includes a protective cap which is detachably connected to the handle portion; the protective cap is used to wrap the puncture cannula and the puncture needle.
[0018] In one embodiment, a guide groove is provided on the handle portion, and the guide groove extends along the installation direction of the protective cap and the handle portion; a guide block is provided on the inner side of the protective cap, and the guide block is in sliding fit with the guide groove;
[0019] And / or, a first buckle is provided on the handle portion, and a second buckle is provided on the protective cap; when the protective cap wraps the puncture cannula and the puncture needle, the first buckle and the second buckle are buckled with each other.
[0020] The technical solution of the present utility model fixes and connects the tube member and the base member to each other. Specifically, the tube member and the base member can be integrally formed and processed, so as to avoid the situation that the tube member and the base member are separated and dislocated from each other during the operation, and ensure the smooth and successful progress of the operation. Moreover, the present utility model is also provided with a handle portion, which is detachably connected to the self-closing valve cap, and the handle portion is fixedly connected to the needle tip. Thus, the user can insert the puncture needle into the sclera of the eyeball by holding the handle portion. Subsequently, the user releases the connection between the handle portion and the self-closing valve cap, and pulls out the puncture needle from the puncture cannula through the handle portion, so as to leave only the puncture cannula for subsequent surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0022] Figure 1 FIG. 1 is a schematic structural diagram of an embodiment of an ophthalmic puncture device provided by the present utility model;
[0023] Figure 2 FIG. 2 is Figure 1 a partial enlarged view of part A in FIG. 1;
[0024] Figure 3 FIG. 3 is a schematic structural diagram of a puncture cannula and a puncture needle in an embodiment of an ophthalmic puncture device provided by the present utility model;
[0025] Figure 4 FIG. 4 is a first schematic structural diagram of a puncture cannula in an embodiment of an ophthalmic puncture device provided by the present utility model;
[0026] Figure 5 FIG. 5 is a second schematic structural diagram of a puncture cannula in an embodiment of an ophthalmic puncture device provided by the present utility model;
[0027] Figure 6 FIG. 6 is a third schematic structural diagram of a puncture cannula in an embodiment of an ophthalmic puncture device provided by the present utility model;
[0028] Figure 7 FIG. 7 is a schematic structural diagram of a protective cap in an embodiment of an ophthalmic puncture device provided by the present utility model;
[0029] Figure 8 FIG. 8 is a schematic structural diagram of a protective cap and a handle portion in an embodiment of an ophthalmic puncture device provided by the present utility model;
[0030] Figure 9Schematic structural diagram of the handle part in an embodiment of the ophthalmic puncture device provided by the present utility model.
[0031] Explanation of reference numerals:
[0032] 1. Puncture cannula; 2. Tube body part; 201. First channel; 3. Base part; 301. Second channel; 302. Clamping protrusion; 4. Self-closing valve cap; 401. Annular groove; 402. Notch part; 403. Clamping groove; 404. Concave area; 5. Deformable seam; 501. Base point; 502. Suture; 6. Handle part; 601. Boss part; 602. Friction structure; 6021. Convex point; 6022. Concavo-convex texture; 603. Guide groove; 604. First buckle part; 605. Third channel; 7. Puncture needle; 701. Needle tip end; 702. Needle end; 703. First fixing part; 8. Protective cap; 801. Guide block; 802. Second buckle part;
[0033] The realization of the purpose, functional characteristics and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments
[0034] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described ones are only some embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection scope of the present utility model.
[0035] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0036] In addition, it should be noted that the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.
[0037] In the prior art, the tube member and the base member in the ophthalmic trocar adopt a mutually separated structure. During the operation, as the medical device is inserted and withdrawn, the tube member and the base member are prone to separation and dislocation, which affects the progress of the operation and may even endanger the visual health of the patient seriously.
[0038] To solve the above technical problems, the present utility model proposes an ophthalmic trocar.
[0039] Please refer to Figures 1-9 , in an embodiment of the present utility model, the ophthalmic trocar includes:
[0040] A puncture cannula 1, the puncture cannula 1 includes a tube member 2, a base member 3 and a self-closing valve cap 4, wherein the tube member 2 and the base member 3 are fixedly connected to each other; the tube member 2 has a first channel 201, the base member 3 has a second channel 301, and the first channel 201 and the second channel 301 are coaxially communicated; the self-closing valve cap 4 is wrapped on the base member 3, the self-closing valve cap 4 is used to close the second channel 301, and a deformable slit 5 is provided on the self-closing valve cap 4;
[0041] A puncture needle 7, the puncture needle 7 includes a needle tip end 701 and a needle end 702 which are oppositely arranged, and the needle tip end 701 is used for puncturing the sclera of the eyeball; the puncture needle 7 is inserted through the first channel 201 and the second channel 301 so that the needle tip end 701 extends out of one end of the tube member 2 away from the base member 3;
[0042] A handle portion 6, the handle portion 6 is detachably connected to the self-closing valve cap 4; the handle portion 6 has a third channel 605, the needle end 702 passes through the deformable slit 5 and extends into the third channel 605, and the handle portion 6 is fixedly connected to the needle end 702.
[0043] The technical solution of the present utility model fixedly connects the tube member 2 and the base member 3 to each other. Specifically, the tube member 2 and the base member 3 can be integrally formed and processed; to avoid the situation that the tube member 2 and the base member 3 are separated and dislocated from each other during the operation and ensure the smooth success of the operation process. And, the present utility model is also provided with a handle portion 6, the handle portion 6 is detachably connected to the self-closing valve cap 4, and the handle portion 6 is fixedly connected to the needle end 702; so that the user can insert the puncture needle 7 into the sclera of the eyeball by holding the handle portion 6; then the user releases the connection between the handle portion 6 and the self-closing valve cap 4, and pulls out the puncture needle 7 from the puncture cannula 1 through the handle portion 6 to leave only the puncture cannula 1 and the self-closing valve cap 4 for subsequent surgical operations.
[0044] It should be noted that the self - closing valve cap 4 is made of an elastic material; in the normal state, the self - closing valve cap 4 is in a closed state to maintain the balance of the intra - ocular pressure, prevent the intra - ocular fluid from leaking out through the first channel 201 and the second channel 301, and at the same time, the deformable joint 5 can deform to form an opening for medical devices to pass through, and the deformable joint 5 can return to its original state under the action of elasticity.
[0045] As a preferred solution of the above - mentioned embodiment, referring to the appendix Figures 4-6 , the self - closing valve cap 4 is provided with an annular groove 401, and the annular groove 401 is annularly arranged around the outer side of the self - closing valve cap 4. With such a setting, when it is necessary to recover the puncture cannula 1 from the sclera of the eyeball after the operation, the user can hold the annular groove 401 of the self - closing valve cap 4 with surgical forceps, and use the annular groove 401 as the clamping point of the surgical forceps to recover the puncture cannula 1 from the sclera of the eyeball.
[0046] As a preferred solution of the above - mentioned embodiment, referring to the appendix Figure 2 、 5 , the outer side of the self - closing valve cap 4 is provided with a notch 402, and the handle part 6 is provided with a boss 601. The boss 601 can be accommodated in the notch 402, and the boss 601 and the notch 402 are in interference fit. With such a setting, through the interference fit between the notch 402 and the boss 601, the handle part 6 and the self - closing valve cap 4 are fixedly connected to each other without external force, so as to realize the detachable connection between the handle part 6 and the self - closing valve cap 4, with a simple structure and strong practicability; it should be emphasized that since the self - closing valve cap 4 in this application is made of an elastic material, even if the handle part 6 and the self - closing valve cap 4 are in interference fit, they can still be easily disassembled under the action of external force to ensure the smooth implementation of the operation. At the same time, the notch 402 prevents the relative rotation between the handle part 6 and the self - closing valve cap 4, ensuring the stability of the product performance of the ophthalmic puncture device during the operation.
[0047] In addition, the notch 402 can also play a role in confirming the orientation; it can be understood that since the notch 402 is provided on the self - closing valve cap 4, during the operation, the user can judge whether the puncture cannula 1 rotates and deviates during the operation by observing whether the notch direction of the notch 402 in the current state is consistent with that in the initial state, so as to improve the accuracy of the surgical operation.
[0048] As a preferred solution of the above - mentioned embodiment, referring to the appendix Figures 4-6The inner side of the self-closing valve cap 4 is provided with a clamping groove 403, and the outer side of the base member 3 is provided with a clamping protrusion 302, which is clamped in the clamping groove 403 to fix the base member 3 and the self-closing valve cap 4 to each other. In this way, the clamping protrusion 302 and the clamping groove 403 are mutually clamped, so that the base member 3 can be mechanically fixed to the self-closing valve cap 4 to prevent displacement between the base member 3 and the self-closing valve cap 4 and cause adverse effects on the operation.
[0049] As a preferred solution of the above embodiment, refer to the attached Figure 6 The end surface of the self-closing valve cap 4 facing away from the base member 3 has a concave area 404 with a truncated cone structure, the end of the concave area 404 with a relatively small diameter faces the base member 3, and the axis of the concave area 404 coincides with the axis of the second channel 301; the deformable slit 5 is arranged at the end of the concave area 404 with a relatively small diameter. In this way, the concave cone-shaped concave area 404 serves as a guide area for medical devices to enter the deformable slit 5; at the same time, because the axis of the concave area 404 coincides with the axis of the second channel 301, it is also convenient to insert the medical device into the second channel 301 in an axially aligned manner, thereby facilitating the entry operation of the medical device.
[0050] Furthermore, the deformable seam 5 includes at least three sutures 502, and at least three sutures 502 are radially and equidistantly distributed in a circular shape with the base point 501 as the center; wherein the base point 501 is located on the axis of the second channel 301. In this way, when the medical device is inserted into the second channel 301 with the base point of the deformable seam 5 aligned, it is necessary to ensure that the medical device is inserted into the second channel 301 in an axially aligned manner, thereby facilitating the entry operation of the medical device. In this embodiment, three sutures 502 are set, from which it can be inferred that the deformable seam 5 is set in a Y-shaped structure; it should be noted that, based on the understanding of the technical solution of the present application, those skilled in the art can associate other setting numbers of sutures 502 without creative labor, such as setting four sutures 502 to make the deformable seam 5 in a cross-shaped structure, or setting eight sutures 502 to make the deformable seam 5 in a M-shaped structure, which should also fall within the scope of protection of the present application.
[0051] As a preferred solution of the above embodiment, refer to the attached Figure 3 The needle end 702 is provided with a first fixing portion 703, and the interior of the third channel 605 is provided with a second fixing portion (not shown in the drawings), and the first fixing portion 703 and the second fixing portion are fixedly connected to each other. In this way, the first fixing portion 703 and the second fixing portion are fixed to each other to ensure that the handle portion 6 has sufficient force to drive the puncture needle 7 out of the puncture sleeve 1, and the structure is simple and practical. In this embodiment, the first fixing portion 703 and the second fixing portion are fixed to each other through concave-convex matching.
[0052] As a preferred solution of the above embodiment, referring to the attached Figure 1 , a friction structure 602 is provided in the hand-held area of the handle portion 6. The friction structure 602 is used to increase the frictional force between the user and the hand-held area. With such a setting, the frictional force between the user and the hand-held area of the handle portion 6 is increased through the friction structure 602 to ensure that the user can reliably control the handle portion 6 through the hand-held area during the operation. In this embodiment, the friction structure 602 includes a plurality of bumps 6021, or concave-convex patterns 6022, or a combination of a plurality of bumps 6021 and concave-convex patterns 6022, and the present application does not make specific limitations thereon.
[0053] As a preferred solution of the above embodiment, referring to the attached Figures 7-8 , the ophthalmic puncture device further includes a protective cap 8, and the protective cap 8 is detachably connected to the handle portion 6; the protective cap 8 is used to wrap the puncture cannula 1 and the puncture needle 7. With such a setting, when in a non-use state, the protective cap 8 is used to cover the handle portion 6 to wrap the puncture cannula 1 and the puncture needle 7 in the protective cap 8, effectively sealing the puncture needle 7, and further improving the safety performance of the product.
[0054] Furthermore, a guiding groove 603 is provided in the handle portion 6, and the guiding groove 603 extends along the installation direction of the protective cap 8 and the handle portion 6; a guiding block 801 is provided on the inner side of the protective cap 8, and the guiding block 801 is slidably matched with the guiding groove 603; with such a setting, under the mutual guiding action of the guiding groove 603 and the guiding block 801, the success rate of installing the protective cap 8 and the handle portion 6 is improved;
[0055] In this embodiment, three guiding grooves 603 are provided, and the three guiding grooves 603 are distributed in the circumferential position of the handle portion 6; it can be understood that three guiding blocks 801 are also correspondingly provided, and each guiding block 801 corresponds to one guiding groove 603. With such a setting, through the mutual cooperation of the three guiding grooves 603, the guiding effect between the protective cap 8 and the handle portion 6 is further improved.
[0056] Furthermore, a first buckle member 604 is provided in the handle portion 6, and a second buckle member 802 is provided on the protective cap 8; when the protective cap 8 wraps the puncture cannula 1 and the puncture needle 7, the first buckle member 604 and the second buckle member 802 are buckled with each other. With such a setting, by the mutual buckling cooperation of the first buckle member 604 and the second buckle member 802, it is ensured that the protective cap 8 and the handle portion 6 can be effectively connected without external force, and the protective cap 8 and the handle portion 6 are prevented from separating from each other in a non-use state, further improving the safety performance of the product.
[0057] It should be noted that other contents of the ophthalmic puncture device disclosed in the present utility model are the prior art and will not be elaborated herein.
[0058] The above are only optional embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any direct or indirect application of the present utility model in other related technical fields is included in the patent protection scope of the present utility model.
Claims
1. An ophthalmic puncture device, characterized in that, Comprising A puncture cannula, which includes a tube body member, a base member, and a self-closing valve cap. The tube body member and the base member are fixedly connected to each other. The tube body member has a first channel, the base member has a second channel, and the first channel and the second channel are coaxially connected and arranged. The self-closing valve cap is wrapped around the base member, and the self-closing valve cap is used to close the second channel, and a deformable slit is provided on the self-closing valve cap. A puncture needle, which includes a needle tip end and a needle tail end arranged oppositely. The needle tip end is used for puncturing the sclera of the eyeball. The puncture needle is inserted through the first channel and the second channel so that the needle tip end extends out of one end of the tube body member away from the base member. A handle portion, which is detachably connected to the self-closing valve cap. The handle portion has a third channel, the needle tail end passes through the deformable slit and extends into the third channel, and the handle portion is fixedly connected to the needle tail end.
2. The ophthalmic puncture device according to claim 1, characterized in that: The self-closing valve cap is provided with an annular groove, and the annular groove is annularly arranged around the outer side portion of the self-closing valve cap.
3. The ophthalmic puncture device according to claim 1, wherein: A notch portion is provided on the outer side portion of the self-closing valve cap, and a boss portion is provided on the handle portion. The boss portion can be accommodated in the notch portion, and the boss portion and the notch portion are in interference fit.
4. The ophthalmic puncture device according to claim 1, wherein: A clamping groove is provided on the inner side portion of the self-closing valve cap, and a clamping protrusion is provided on the outer side portion of the base member. The clamping protrusion is clamped in the clamping groove so that the base member and the self-closing valve cap are fixed to each other.
5. The ophthalmic puncture device according to claim 1, characterized in that: One side end face of the self-closing valve cap facing away from the base member has a concave area with a frustum-shaped structure. The end with a relatively smaller diameter in the concave area faces the base member, and the axis of the concave area coincides with the axis of the second channel. The deformable slit is provided at the end with a relatively smaller diameter in the concave area.
6. The ophthalmic puncture device according to claim 1, wherein: The deformable slit includes at least three sutures, and at least three of the sutures are radially and equidistantly annularly distributed with a base point as the center. The base point is located on the axis of the second channel.
7. The ophthalmic puncture device according to claim 1, wherein: The needle tail end is provided with a first fixing portion, and a second fixing portion is provided inside the third channel. The first fixing portion and the second fixing portion are fixedly connected to each other.
8. The ophthalmic puncture device according to claim 1, characterized in that: A friction structure is provided in the hand-held area of the handle portion, and the friction structure includes a plurality of convex points and / or concave-convex patterns.
9. The ophthalmic trocar according to claim 1, wherein: The ophthalmic puncture device further includes a protective cap, and the protective cap is detachably connected to the handle portion. The protective cap is used to wrap the puncture cannula and the puncture needle.
10. The ophthalmic puncture device according to claim 9, characterized in that: The handle portion is provided with a guiding groove, and the guiding groove extends along the installation direction of the protective cap and the handle portion. A guiding block is provided on the inner side of the protective cap, and the guiding block is in sliding fit with the guiding groove. And / or, the handle portion is provided with a first buckle member, and the protective cap is provided with a second buckle member. When the protective cap wraps the puncture cannula and the puncture needle, the first buckle member and the second buckle member are buckled with each other.